+++ /dev/null
-This is a port of the MMC-SPI driver from 2.6.24.3
---mb
-
-
---- a/drivers/mmc/host/Kconfig
-+++ b/drivers/mmc/host/Kconfig
-@@ -100,3 +100,16 @@ config MMC_TIFM_SD
- To compile this driver as a module, choose M here: the
- module will be called tifm_sd.
-
-+config MMC_SPI
-+ tristate "MMC/SD over SPI (EXPERIMENTAL)"
-+ depends on MMC && SPI_MASTER && !HIGHMEM && EXPERIMENTAL
-+ select CRC7
-+ select CRC_ITU_T
-+ help
-+ Some systems accss MMC/SD cards using a SPI controller instead of
-+ using a "native" MMC/SD controller. This has a disadvantage of
-+ being relatively high overhead, but a compensating advantage of
-+ working on many systems without dedicated MMC/SD controllers.
-+
-+ If unsure, or if your system has no SPI master driver, say N.
-+
---- a/drivers/mmc/host/Makefile
-+++ b/drivers/mmc/host/Makefile
-@@ -15,4 +15,5 @@ obj-$(CONFIG_MMC_AU1X) += au1xmmc.o
- obj-$(CONFIG_MMC_OMAP) += omap.o
- obj-$(CONFIG_MMC_AT91) += at91_mci.o
- obj-$(CONFIG_MMC_TIFM_SD) += tifm_sd.o
-+obj-$(CONFIG_MMC_SPI) += mmc_spi.o
-
---- /dev/null
-+++ b/drivers/mmc/host/mmc_spi.c
-@@ -0,0 +1,1419 @@
-+/*
-+ * mmc_spi.c - Access SD/MMC cards through SPI master controllers
-+ *
-+ * (C) Copyright 2005, Intec Automation,
-+ * Mike Lavender (mike@steroidmicros)
-+ * (C) Copyright 2006-2007, David Brownell
-+ * (C) Copyright 2007, Axis Communications,
-+ * Hans-Peter Nilsson (hp@axis.com)
-+ * (C) Copyright 2007, ATRON electronic GmbH,
-+ * Jan Nikitenko <jan.nikitenko@gmail.com>
-+ *
-+ *
-+ * This program is free software; you can redistribute it and/or modify
-+ * it under the terms of the GNU General Public License as published by
-+ * the Free Software Foundation; either version 2 of the License, or
-+ * (at your option) any later version.
-+ *
-+ * This program is distributed in the hope that it will be useful,
-+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
-+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-+ * GNU General Public License for more details.
-+ *
-+ * You should have received a copy of the GNU General Public License
-+ * along with this program; if not, write to the Free Software
-+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-+ */
-+#include <linux/hrtimer.h>
-+#include <linux/delay.h>
-+#include <linux/bio.h>
-+#include <linux/dma-mapping.h>
-+#include <linux/crc7.h>
-+#include <linux/crc-itu-t.h>
-+#include <linux/scatterlist.h>
-+
-+#include <linux/mmc/host.h>
-+#include <linux/mmc/mmc.h> /* for R1_SPI_* bit values */
-+
-+#include <linux/spi/spi.h>
-+#include <linux/spi/mmc_spi.h>
-+
-+#include <asm/unaligned.h>
-+
-+
-+#define sg_page(sg) (sg)->page
-+
-+
-+/* NOTES:
-+ *
-+ * - For now, we won't try to interoperate with a real mmc/sd/sdio
-+ * controller, although some of them do have hardware support for
-+ * SPI protocol. The main reason for such configs would be mmc-ish
-+ * cards like DataFlash, which don't support that "native" protocol.
-+ *
-+ * We don't have a "DataFlash/MMC/SD/SDIO card slot" abstraction to
-+ * switch between driver stacks, and in any case if "native" mode
-+ * is available, it will be faster and hence preferable.
-+ *
-+ * - MMC depends on a different chipselect management policy than the
-+ * SPI interface currently supports for shared bus segments: it needs
-+ * to issue multiple spi_message requests with the chipselect active,
-+ * using the results of one message to decide the next one to issue.
-+ *
-+ * Pending updates to the programming interface, this driver expects
-+ * that it not share the bus with other drivers (precluding conflicts).
-+ *
-+ * - We tell the controller to keep the chipselect active from the
-+ * beginning of an mmc_host_ops.request until the end. So beware
-+ * of SPI controller drivers that mis-handle the cs_change flag!
-+ *
-+ * However, many cards seem OK with chipselect flapping up/down
-+ * during that time ... at least on unshared bus segments.
-+ */
-+
-+
-+/*
-+ * Local protocol constants, internal to data block protocols.
-+ */
-+
-+/* Response tokens used to ack each block written: */
-+#define SPI_MMC_RESPONSE_CODE(x) ((x) & 0x1f)
-+#define SPI_RESPONSE_ACCEPTED ((2 << 1)|1)
-+#define SPI_RESPONSE_CRC_ERR ((5 << 1)|1)
-+#define SPI_RESPONSE_WRITE_ERR ((6 << 1)|1)
-+
-+/* Read and write blocks start with these tokens and end with crc;
-+ * on error, read tokens act like a subset of R2_SPI_* values.
-+ */
-+#define SPI_TOKEN_SINGLE 0xfe /* single block r/w, multiblock read */
-+#define SPI_TOKEN_MULTI_WRITE 0xfc /* multiblock write */
-+#define SPI_TOKEN_STOP_TRAN 0xfd /* terminate multiblock write */
-+
-+#define MMC_SPI_BLOCKSIZE 512
-+
-+
-+/* These fixed timeouts come from the latest SD specs, which say to ignore
-+ * the CSD values. The R1B value is for card erase (e.g. the "I forgot the
-+ * card's password" scenario); it's mostly applied to STOP_TRANSMISSION after
-+ * reads which takes nowhere near that long. Older cards may be able to use
-+ * shorter timeouts ... but why bother?
-+ */
-+#define readblock_timeout ktime_set(0, 100 * 1000 * 1000)
-+#define writeblock_timeout ktime_set(0, 250 * 1000 * 1000)
-+#define r1b_timeout ktime_set(3, 0)
-+
-+
-+/****************************************************************************/
-+
-+/*
-+ * Local Data Structures
-+ */
-+
-+/* "scratch" is per-{command,block} data exchanged with the card */
-+struct scratch {
-+ u8 status[29];
-+ u8 data_token;
-+ __be16 crc_val;
-+};
-+
-+struct mmc_spi_host {
-+ struct mmc_host *mmc;
-+ struct spi_device *spi;
-+
-+ unsigned char power_mode;
-+ u16 powerup_msecs;
-+
-+ struct mmc_spi_platform_data *pdata;
-+
-+ /* for bulk data transfers */
-+ struct spi_transfer token, t, crc, early_status;
-+ struct spi_message m;
-+
-+ /* for status readback */
-+ struct spi_transfer status;
-+ struct spi_message readback;
-+
-+ /* underlying DMA-aware controller, or null */
-+ struct device *dma_dev;
-+
-+ /* buffer used for commands and for message "overhead" */
-+ struct scratch *data;
-+ dma_addr_t data_dma;
-+
-+ /* Specs say to write ones most of the time, even when the card
-+ * has no need to read its input data; and many cards won't care.
-+ * This is our source of those ones.
-+ */
-+ void *ones;
-+ dma_addr_t ones_dma;
-+};
-+
-+
-+/****************************************************************************/
-+
-+/*
-+ * MMC-over-SPI protocol glue, used by the MMC stack interface
-+ */
-+
-+static inline int mmc_cs_off(struct mmc_spi_host *host)
-+{
-+ /* chipselect will always be inactive after setup() */
-+ return spi_setup(host->spi);
-+}
-+
-+static int
-+mmc_spi_readbytes(struct mmc_spi_host *host, unsigned len)
-+{
-+ int status;
-+
-+ if (len > sizeof(*host->data)) {
-+ WARN_ON(1);
-+ return -EIO;
-+ }
-+
-+ host->status.len = len;
-+
-+ if (host->dma_dev)
-+ dma_sync_single_for_device(host->dma_dev,
-+ host->data_dma, sizeof(*host->data),
-+ DMA_FROM_DEVICE);
-+
-+ status = spi_sync(host->spi, &host->readback);
-+
-+ if (host->dma_dev)
-+ dma_sync_single_for_cpu(host->dma_dev,
-+ host->data_dma, sizeof(*host->data),
-+ DMA_FROM_DEVICE);
-+
-+ return status;
-+}
-+
-+static int
-+mmc_spi_skip(struct mmc_spi_host *host, ktime_t timeout, unsigned n, u8 byte)
-+{
-+ u8 *cp = host->data->status;
-+
-+ timeout = ktime_add(timeout, ktime_get());
-+
-+ while (1) {
-+ int status;
-+ unsigned i;
-+
-+ status = mmc_spi_readbytes(host, n);
-+ if (status < 0)
-+ return status;
-+
-+ for (i = 0; i < n; i++) {
-+ if (cp[i] != byte)
-+ return cp[i];
-+ }
-+
-+ /* REVISIT investigate msleep() to avoid busy-wait I/O
-+ * in at least some cases.
-+ */
-+ if (ktime_to_ns(ktime_sub(ktime_get(), timeout)) > 0)
-+ break;
-+ }
-+ return -ETIMEDOUT;
-+}
-+
-+static inline int
-+mmc_spi_wait_unbusy(struct mmc_spi_host *host, ktime_t timeout)
-+{
-+ return mmc_spi_skip(host, timeout, sizeof(host->data->status), 0);
-+}
-+
-+static int mmc_spi_readtoken(struct mmc_spi_host *host)
-+{
-+ return mmc_spi_skip(host, readblock_timeout, 1, 0xff);
-+}
-+
-+
-+/*
-+ * Note that for SPI, cmd->resp[0] is not the same data as "native" protocol
-+ * hosts return! The low byte holds R1_SPI bits. The next byte may hold
-+ * R2_SPI bits ... for SEND_STATUS, or after data read errors.
-+ *
-+ * cmd->resp[1] holds any four-byte response, for R3 (READ_OCR) and on
-+ * newer cards R7 (IF_COND).
-+ */
-+
-+static char *maptype(struct mmc_command *cmd)
-+{
-+ switch (mmc_spi_resp_type(cmd)) {
-+ case MMC_RSP_SPI_R1: return "R1";
-+ case MMC_RSP_SPI_R1B: return "R1B";
-+ case MMC_RSP_SPI_R2: return "R2/R5";
-+ case MMC_RSP_SPI_R3: return "R3/R4/R7";
-+ default: return "?";
-+ }
-+}
-+
-+/* return zero, else negative errno after setting cmd->error */
-+static int mmc_spi_response_get(struct mmc_spi_host *host,
-+ struct mmc_command *cmd, int cs_on)
-+{
-+ u8 *cp = host->data->status;
-+ u8 *end = cp + host->t.len;
-+ int value = 0;
-+ char tag[32];
-+
-+ snprintf(tag, sizeof(tag), " ... CMD%d response SPI_%s",
-+ cmd->opcode, maptype(cmd));
-+
-+ /* Except for data block reads, the whole response will already
-+ * be stored in the scratch buffer. It's somewhere after the
-+ * command and the first byte we read after it. We ignore that
-+ * first byte. After STOP_TRANSMISSION command it may include
-+ * two data bits, but otherwise it's all ones.
-+ */
-+ cp += 8;
-+ while (cp < end && *cp == 0xff)
-+ cp++;
-+
-+ /* Data block reads (R1 response types) may need more data... */
-+ if (cp == end) {
-+ unsigned i;
-+
-+ cp = host->data->status;
-+
-+ /* Card sends N(CR) (== 1..8) bytes of all-ones then one
-+ * status byte ... and we already scanned 2 bytes.
-+ *
-+ * REVISIT block read paths use nasty byte-at-a-time I/O
-+ * so it can always DMA directly into the target buffer.
-+ * It'd probably be better to memcpy() the first chunk and
-+ * avoid extra i/o calls...
-+ */
-+ for (i = 2; i < 9; i++) {
-+ value = mmc_spi_readbytes(host, 1);
-+ if (value < 0)
-+ goto done;
-+ if (*cp != 0xff)
-+ goto checkstatus;
-+ }
-+ value = -ETIMEDOUT;
-+ goto done;
-+ }
-+
-+checkstatus:
-+ if (*cp & 0x80) {
-+ dev_dbg(&host->spi->dev, "%s: INVALID RESPONSE, %02x\n",
-+ tag, *cp);
-+ value = -EBADR;
-+ goto done;
-+ }
-+
-+ cmd->resp[0] = *cp++;
-+ cmd->error = 0;
-+
-+ /* Status byte: the entire seven-bit R1 response. */
-+ if (cmd->resp[0] != 0) {
-+ if ((R1_SPI_PARAMETER | R1_SPI_ADDRESS
-+ | R1_SPI_ILLEGAL_COMMAND)
-+ & cmd->resp[0])
-+ value = -EINVAL;
-+ else if (R1_SPI_COM_CRC & cmd->resp[0])
-+ value = -EILSEQ;
-+ else if ((R1_SPI_ERASE_SEQ | R1_SPI_ERASE_RESET)
-+ & cmd->resp[0])
-+ value = -EIO;
-+ /* else R1_SPI_IDLE, "it's resetting" */
-+ }
-+
-+ switch (mmc_spi_resp_type(cmd)) {
-+
-+ /* SPI R1B == R1 + busy; STOP_TRANSMISSION (for multiblock reads)
-+ * and less-common stuff like various erase operations.
-+ */
-+ case MMC_RSP_SPI_R1B:
-+ /* maybe we read all the busy tokens already */
-+ while (cp < end && *cp == 0)
-+ cp++;
-+ if (cp == end)
-+ mmc_spi_wait_unbusy(host, r1b_timeout);
-+ break;
-+
-+ /* SPI R2 == R1 + second status byte; SEND_STATUS
-+ * SPI R5 == R1 + data byte; IO_RW_DIRECT
-+ */
-+ case MMC_RSP_SPI_R2:
-+ cmd->resp[0] |= *cp << 8;
-+ break;
-+
-+ /* SPI R3, R4, or R7 == R1 + 4 bytes */
-+ case MMC_RSP_SPI_R3:
-+ cmd->resp[1] = be32_to_cpu(get_unaligned((u32 *)cp));
-+ break;
-+
-+ /* SPI R1 == just one status byte */
-+ case MMC_RSP_SPI_R1:
-+ break;
-+
-+ default:
-+ dev_dbg(&host->spi->dev, "bad response type %04x\n",
-+ mmc_spi_resp_type(cmd));
-+ if (value >= 0)
-+ value = -EINVAL;
-+ goto done;
-+ }
-+
-+ if (value < 0)
-+ dev_dbg(&host->spi->dev, "%s: resp %04x %08x\n",
-+ tag, cmd->resp[0], cmd->resp[1]);
-+
-+ /* disable chipselect on errors and some success cases */
-+ if (value >= 0 && cs_on)
-+ return value;
-+done:
-+ if (value < 0)
-+ cmd->error = value;
-+ mmc_cs_off(host);
-+ return value;
-+}
-+
-+/* Issue command and read its response.
-+ * Returns zero on success, negative for error.
-+ *
-+ * On error, caller must cope with mmc core retry mechanism. That
-+ * means immediate low-level resubmit, which affects the bus lock...
-+ */
-+static int
-+mmc_spi_command_send(struct mmc_spi_host *host,
-+ struct mmc_request *mrq,
-+ struct mmc_command *cmd, int cs_on)
-+{
-+ struct scratch *data = host->data;
-+ u8 *cp = data->status;
-+ u32 arg = cmd->arg;
-+ int status;
-+ struct spi_transfer *t;
-+
-+ /* We can handle most commands (except block reads) in one full
-+ * duplex I/O operation before either starting the next transfer
-+ * (data block or command) or else deselecting the card.
-+ *
-+ * First, write 7 bytes:
-+ * - an all-ones byte to ensure the card is ready
-+ * - opcode byte (plus start and transmission bits)
-+ * - four bytes of big-endian argument
-+ * - crc7 (plus end bit) ... always computed, it's cheap
-+ *
-+ * We init the whole buffer to all-ones, which is what we need
-+ * to write while we're reading (later) response data.
-+ */
-+ memset(cp++, 0xff, sizeof(data->status));
-+
-+ *cp++ = 0x40 | cmd->opcode;
-+ *cp++ = (u8)(arg >> 24);
-+ *cp++ = (u8)(arg >> 16);
-+ *cp++ = (u8)(arg >> 8);
-+ *cp++ = (u8)arg;
-+ *cp++ = (crc7(0, &data->status[1], 5) << 1) | 0x01;
-+
-+ /* Then, read up to 13 bytes (while writing all-ones):
-+ * - N(CR) (== 1..8) bytes of all-ones
-+ * - status byte (for all response types)
-+ * - the rest of the response, either:
-+ * + nothing, for R1 or R1B responses
-+ * + second status byte, for R2 responses
-+ * + four data bytes, for R3 and R7 responses
-+ *
-+ * Finally, read some more bytes ... in the nice cases we know in
-+ * advance how many, and reading 1 more is always OK:
-+ * - N(EC) (== 0..N) bytes of all-ones, before deselect/finish
-+ * - N(RC) (== 1..N) bytes of all-ones, before next command
-+ * - N(WR) (== 1..N) bytes of all-ones, before data write
-+ *
-+ * So in those cases one full duplex I/O of at most 21 bytes will
-+ * handle the whole command, leaving the card ready to receive a
-+ * data block or new command. We do that whenever we can, shaving
-+ * CPU and IRQ costs (especially when using DMA or FIFOs).
-+ *
-+ * There are two other cases, where it's not generally practical
-+ * to rely on a single I/O:
-+ *
-+ * - R1B responses need at least N(EC) bytes of all-zeroes.
-+ *
-+ * In this case we can *try* to fit it into one I/O, then
-+ * maybe read more data later.
-+ *
-+ * - Data block reads are more troublesome, since a variable
-+ * number of padding bytes precede the token and data.
-+ * + N(CX) (== 0..8) bytes of all-ones, before CSD or CID
-+ * + N(AC) (== 1..many) bytes of all-ones
-+ *
-+ * In this case we currently only have minimal speedups here:
-+ * when N(CR) == 1 we can avoid I/O in response_get().
-+ */
-+ if (cs_on && (mrq->data->flags & MMC_DATA_READ)) {
-+ cp += 2; /* min(N(CR)) + status */
-+ /* R1 */
-+ } else {
-+ cp += 10; /* max(N(CR)) + status + min(N(RC),N(WR)) */
-+ if (cmd->flags & MMC_RSP_SPI_S2) /* R2/R5 */
-+ cp++;
-+ else if (cmd->flags & MMC_RSP_SPI_B4) /* R3/R4/R7 */
-+ cp += 4;
-+ else if (cmd->flags & MMC_RSP_BUSY) /* R1B */
-+ cp = data->status + sizeof(data->status);
-+ /* else: R1 (most commands) */
-+ }
-+
-+ dev_dbg(&host->spi->dev, " mmc_spi: CMD%d, resp %s\n",
-+ cmd->opcode, maptype(cmd));
-+
-+ /* send command, leaving chipselect active */
-+ spi_message_init(&host->m);
-+
-+ t = &host->t;
-+ memset(t, 0, sizeof(*t));
-+ t->tx_buf = t->rx_buf = data->status;
-+ t->tx_dma = t->rx_dma = host->data_dma;
-+ t->len = cp - data->status;
-+ t->cs_change = 1;
-+ spi_message_add_tail(t, &host->m);
-+
-+ if (host->dma_dev) {
-+ host->m.is_dma_mapped = 1;
-+ dma_sync_single_for_device(host->dma_dev,
-+ host->data_dma, sizeof(*host->data),
-+ DMA_BIDIRECTIONAL);
-+ }
-+ status = spi_sync(host->spi, &host->m);
-+
-+ if (host->dma_dev)
-+ dma_sync_single_for_cpu(host->dma_dev,
-+ host->data_dma, sizeof(*host->data),
-+ DMA_BIDIRECTIONAL);
-+ if (status < 0) {
-+ dev_dbg(&host->spi->dev, " ... write returned %d\n", status);
-+ cmd->error = status;
-+ return status;
-+ }
-+
-+ /* after no-data commands and STOP_TRANSMISSION, chipselect off */
-+ return mmc_spi_response_get(host, cmd, cs_on);
-+}
-+
-+/* Build data message with up to four separate transfers. For TX, we
-+ * start by writing the data token. And in most cases, we finish with
-+ * a status transfer.
-+ *
-+ * We always provide TX data for data and CRC. The MMC/SD protocol
-+ * requires us to write ones; but Linux defaults to writing zeroes;
-+ * so we explicitly initialize it to all ones on RX paths.
-+ *
-+ * We also handle DMA mapping, so the underlying SPI controller does
-+ * not need to (re)do it for each message.
-+ */
-+static void
-+mmc_spi_setup_data_message(
-+ struct mmc_spi_host *host,
-+ int multiple,
-+ enum dma_data_direction direction)
-+{
-+ struct spi_transfer *t;
-+ struct scratch *scratch = host->data;
-+ dma_addr_t dma = host->data_dma;
-+
-+ spi_message_init(&host->m);
-+ if (dma)
-+ host->m.is_dma_mapped = 1;
-+
-+ /* for reads, readblock() skips 0xff bytes before finding
-+ * the token; for writes, this transfer issues that token.
-+ */
-+ if (direction == DMA_TO_DEVICE) {
-+ t = &host->token;
-+ memset(t, 0, sizeof(*t));
-+ t->len = 1;
-+ if (multiple)
-+ scratch->data_token = SPI_TOKEN_MULTI_WRITE;
-+ else
-+ scratch->data_token = SPI_TOKEN_SINGLE;
-+ t->tx_buf = &scratch->data_token;
-+ if (dma)
-+ t->tx_dma = dma + offsetof(struct scratch, data_token);
-+ spi_message_add_tail(t, &host->m);
-+ }
-+
-+ /* Body of transfer is buffer, then CRC ...
-+ * either TX-only, or RX with TX-ones.
-+ */
-+ t = &host->t;
-+ memset(t, 0, sizeof(*t));
-+ t->tx_buf = host->ones;
-+ t->tx_dma = host->ones_dma;
-+ /* length and actual buffer info are written later */
-+ spi_message_add_tail(t, &host->m);
-+
-+ t = &host->crc;
-+ memset(t, 0, sizeof(*t));
-+ t->len = 2;
-+ if (direction == DMA_TO_DEVICE) {
-+ /* the actual CRC may get written later */
-+ t->tx_buf = &scratch->crc_val;
-+ if (dma)
-+ t->tx_dma = dma + offsetof(struct scratch, crc_val);
-+ } else {
-+ t->tx_buf = host->ones;
-+ t->tx_dma = host->ones_dma;
-+ t->rx_buf = &scratch->crc_val;
-+ if (dma)
-+ t->rx_dma = dma + offsetof(struct scratch, crc_val);
-+ }
-+ spi_message_add_tail(t, &host->m);
-+
-+ /*
-+ * A single block read is followed by N(EC) [0+] all-ones bytes
-+ * before deselect ... don't bother.
-+ *
-+ * Multiblock reads are followed by N(AC) [1+] all-ones bytes before
-+ * the next block is read, or a STOP_TRANSMISSION is issued. We'll
-+ * collect that single byte, so readblock() doesn't need to.
-+ *
-+ * For a write, the one-byte data response follows immediately, then
-+ * come zero or more busy bytes, then N(WR) [1+] all-ones bytes.
-+ * Then single block reads may deselect, and multiblock ones issue
-+ * the next token (next data block, or STOP_TRAN). We can try to
-+ * minimize I/O ops by using a single read to collect end-of-busy.
-+ */
-+ if (multiple || direction == DMA_TO_DEVICE) {
-+ t = &host->early_status;
-+ memset(t, 0, sizeof(*t));
-+ t->len = (direction == DMA_TO_DEVICE)
-+ ? sizeof(scratch->status)
-+ : 1;
-+ t->tx_buf = host->ones;
-+ t->tx_dma = host->ones_dma;
-+ t->rx_buf = scratch->status;
-+ if (dma)
-+ t->rx_dma = dma + offsetof(struct scratch, status);
-+ t->cs_change = 1;
-+ spi_message_add_tail(t, &host->m);
-+ }
-+}
-+
-+/*
-+ * Write one block:
-+ * - caller handled preceding N(WR) [1+] all-ones bytes
-+ * - data block
-+ * + token
-+ * + data bytes
-+ * + crc16
-+ * - an all-ones byte ... card writes a data-response byte
-+ * - followed by N(EC) [0+] all-ones bytes, card writes zero/'busy'
-+ *
-+ * Return negative errno, else success.
-+ */
-+static int
-+mmc_spi_writeblock(struct mmc_spi_host *host, struct spi_transfer *t)
-+{
-+ struct spi_device *spi = host->spi;
-+ int status, i;
-+ struct scratch *scratch = host->data;
-+
-+ if (host->mmc->use_spi_crc)
-+ scratch->crc_val = cpu_to_be16(
-+ crc_itu_t(0, t->tx_buf, t->len));
-+ if (host->dma_dev)
-+ dma_sync_single_for_device(host->dma_dev,
-+ host->data_dma, sizeof(*scratch),
-+ DMA_BIDIRECTIONAL);
-+
-+ status = spi_sync(spi, &host->m);
-+
-+ if (status != 0) {
-+ dev_dbg(&spi->dev, "write error (%d)\n", status);
-+ return status;
-+ }
-+
-+ if (host->dma_dev)
-+ dma_sync_single_for_cpu(host->dma_dev,
-+ host->data_dma, sizeof(*scratch),
-+ DMA_BIDIRECTIONAL);
-+
-+ /*
-+ * Get the transmission data-response reply. It must follow
-+ * immediately after the data block we transferred. This reply
-+ * doesn't necessarily tell whether the write operation succeeded;
-+ * it just says if the transmission was ok and whether *earlier*
-+ * writes succeeded; see the standard.
-+ */
-+ switch (SPI_MMC_RESPONSE_CODE(scratch->status[0])) {
-+ case SPI_RESPONSE_ACCEPTED:
-+ status = 0;
-+ break;
-+ case SPI_RESPONSE_CRC_ERR:
-+ /* host shall then issue MMC_STOP_TRANSMISSION */
-+ status = -EILSEQ;
-+ break;
-+ case SPI_RESPONSE_WRITE_ERR:
-+ /* host shall then issue MMC_STOP_TRANSMISSION,
-+ * and should MMC_SEND_STATUS to sort it out
-+ */
-+ status = -EIO;
-+ break;
-+ default:
-+ status = -EPROTO;
-+ break;
-+ }
-+ if (status != 0) {
-+ dev_dbg(&spi->dev, "write error %02x (%d)\n",
-+ scratch->status[0], status);
-+ return status;
-+ }
-+
-+ t->tx_buf += t->len;
-+ if (host->dma_dev)
-+ t->tx_dma += t->len;
-+
-+ /* Return when not busy. If we didn't collect that status yet,
-+ * we'll need some more I/O.
-+ */
-+ for (i = 1; i < sizeof(scratch->status); i++) {
-+ if (scratch->status[i] != 0)
-+ return 0;
-+ }
-+ return mmc_spi_wait_unbusy(host, writeblock_timeout);
-+}
-+
-+/*
-+ * Read one block:
-+ * - skip leading all-ones bytes ... either
-+ * + N(AC) [1..f(clock,CSD)] usually, else
-+ * + N(CX) [0..8] when reading CSD or CID
-+ * - data block
-+ * + token ... if error token, no data or crc
-+ * + data bytes
-+ * + crc16
-+ *
-+ * After single block reads, we're done; N(EC) [0+] all-ones bytes follow
-+ * before dropping chipselect.
-+ *
-+ * For multiblock reads, caller either reads the next block or issues a
-+ * STOP_TRANSMISSION command.
-+ */
-+static int
-+mmc_spi_readblock(struct mmc_spi_host *host, struct spi_transfer *t)
-+{
-+ struct spi_device *spi = host->spi;
-+ int status;
-+ struct scratch *scratch = host->data;
-+
-+ /* At least one SD card sends an all-zeroes byte when N(CX)
-+ * applies, before the all-ones bytes ... just cope with that.
-+ */
-+ status = mmc_spi_readbytes(host, 1);
-+ if (status < 0)
-+ return status;
-+ status = scratch->status[0];
-+ if (status == 0xff || status == 0)
-+ status = mmc_spi_readtoken(host);
-+
-+ if (status == SPI_TOKEN_SINGLE) {
-+ if (host->dma_dev) {
-+ dma_sync_single_for_device(host->dma_dev,
-+ host->data_dma, sizeof(*scratch),
-+ DMA_BIDIRECTIONAL);
-+ dma_sync_single_for_device(host->dma_dev,
-+ t->rx_dma, t->len,
-+ DMA_FROM_DEVICE);
-+ }
-+
-+ status = spi_sync(spi, &host->m);
-+
-+ if (host->dma_dev) {
-+ dma_sync_single_for_cpu(host->dma_dev,
-+ host->data_dma, sizeof(*scratch),
-+ DMA_BIDIRECTIONAL);
-+ dma_sync_single_for_cpu(host->dma_dev,
-+ t->rx_dma, t->len,
-+ DMA_FROM_DEVICE);
-+ }
-+
-+ } else {
-+ dev_dbg(&spi->dev, "read error %02x (%d)\n", status, status);
-+
-+ /* we've read extra garbage, timed out, etc */
-+ if (status < 0)
-+ return status;
-+
-+ /* low four bits are an R2 subset, fifth seems to be
-+ * vendor specific ... map them all to generic error..
-+ */
-+ return -EIO;
-+ }
-+
-+ if (host->mmc->use_spi_crc) {
-+ u16 crc = crc_itu_t(0, t->rx_buf, t->len);
-+
-+ be16_to_cpus(&scratch->crc_val);
-+ if (scratch->crc_val != crc) {
-+ dev_dbg(&spi->dev, "read - crc error: crc_val=0x%04x, "
-+ "computed=0x%04x len=%d\n",
-+ scratch->crc_val, crc, t->len);
-+ return -EILSEQ;
-+ }
-+ }
-+
-+ t->rx_buf += t->len;
-+ if (host->dma_dev)
-+ t->rx_dma += t->len;
-+
-+ return 0;
-+}
-+
-+/*
-+ * An MMC/SD data stage includes one or more blocks, optional CRCs,
-+ * and inline handshaking. That handhaking makes it unlike most
-+ * other SPI protocol stacks.
-+ */
-+static void
-+mmc_spi_data_do(struct mmc_spi_host *host, struct mmc_command *cmd,
-+ struct mmc_data *data, u32 blk_size)
-+{
-+ struct spi_device *spi = host->spi;
-+ struct device *dma_dev = host->dma_dev;
-+ struct spi_transfer *t;
-+ enum dma_data_direction direction;
-+ struct scatterlist *sg;
-+ unsigned n_sg;
-+ int multiple = (data->blocks > 1);
-+
-+ if (data->flags & MMC_DATA_READ)
-+ direction = DMA_FROM_DEVICE;
-+ else
-+ direction = DMA_TO_DEVICE;
-+ mmc_spi_setup_data_message(host, multiple, direction);
-+ t = &host->t;
-+
-+ /* Handle scatterlist segments one at a time, with synch for
-+ * each 512-byte block
-+ */
-+ for (sg = data->sg, n_sg = data->sg_len; n_sg; n_sg--, sg++) {
-+ int status = 0;
-+ dma_addr_t dma_addr = 0;
-+ void *kmap_addr;
-+ unsigned length = sg->length;
-+ enum dma_data_direction dir = direction;
-+
-+ /* set up dma mapping for controller drivers that might
-+ * use DMA ... though they may fall back to PIO
-+ */
-+ if (dma_dev) {
-+ /* never invalidate whole *shared* pages ... */
-+ if ((sg->offset != 0 || length != PAGE_SIZE)
-+ && dir == DMA_FROM_DEVICE)
-+ dir = DMA_BIDIRECTIONAL;
-+
-+ dma_addr = dma_map_page(dma_dev, sg_page(sg), 0,
-+ PAGE_SIZE, dir);
-+ if (direction == DMA_TO_DEVICE)
-+ t->tx_dma = dma_addr + sg->offset;
-+ else
-+ t->rx_dma = dma_addr + sg->offset;
-+ }
-+
-+ /* allow pio too; we don't allow highmem */
-+ kmap_addr = kmap(sg_page(sg));
-+ if (direction == DMA_TO_DEVICE)
-+ t->tx_buf = kmap_addr + sg->offset;
-+ else
-+ t->rx_buf = kmap_addr + sg->offset;
-+
-+ /* transfer each block, and update request status */
-+ while (length) {
-+ t->len = min(length, blk_size);
-+
-+ dev_dbg(&host->spi->dev,
-+ " mmc_spi: %s block, %d bytes\n",
-+ (direction == DMA_TO_DEVICE)
-+ ? "write"
-+ : "read",
-+ t->len);
-+
-+ if (direction == DMA_TO_DEVICE)
-+ status = mmc_spi_writeblock(host, t);
-+ else
-+ status = mmc_spi_readblock(host, t);
-+ if (status < 0)
-+ break;
-+
-+ data->bytes_xfered += t->len;
-+ length -= t->len;
-+
-+ if (!multiple)
-+ break;
-+ }
-+
-+ /* discard mappings */
-+ if (direction == DMA_FROM_DEVICE)
-+ flush_kernel_dcache_page(sg_page(sg));
-+ kunmap(sg_page(sg));
-+ if (dma_dev)
-+ dma_unmap_page(dma_dev, dma_addr, PAGE_SIZE, dir);
-+
-+ if (status < 0) {
-+ data->error = status;
-+ dev_dbg(&spi->dev, "%s status %d\n",
-+ (direction == DMA_TO_DEVICE)
-+ ? "write" : "read",
-+ status);
-+ break;
-+ }
-+ }
-+
-+ /* NOTE some docs describe an MMC-only SET_BLOCK_COUNT (CMD23) that
-+ * can be issued before multiblock writes. Unlike its more widely
-+ * documented analogue for SD cards (SET_WR_BLK_ERASE_COUNT, ACMD23),
-+ * that can affect the STOP_TRAN logic. Complete (and current)
-+ * MMC specs should sort that out before Linux starts using CMD23.
-+ */
-+ if (direction == DMA_TO_DEVICE && multiple) {
-+ struct scratch *scratch = host->data;
-+ int tmp;
-+ const unsigned statlen = sizeof(scratch->status);
-+
-+ dev_dbg(&spi->dev, " mmc_spi: STOP_TRAN\n");
-+
-+ /* Tweak the per-block message we set up earlier by morphing
-+ * it to hold single buffer with the token followed by some
-+ * all-ones bytes ... skip N(BR) (0..1), scan the rest for
-+ * "not busy any longer" status, and leave chip selected.
-+ */
-+ INIT_LIST_HEAD(&host->m.transfers);
-+ list_add(&host->early_status.transfer_list,
-+ &host->m.transfers);
-+
-+ memset(scratch->status, 0xff, statlen);
-+ scratch->status[0] = SPI_TOKEN_STOP_TRAN;
-+
-+ host->early_status.tx_buf = host->early_status.rx_buf;
-+ host->early_status.tx_dma = host->early_status.rx_dma;
-+ host->early_status.len = statlen;
-+
-+ if (host->dma_dev)
-+ dma_sync_single_for_device(host->dma_dev,
-+ host->data_dma, sizeof(*scratch),
-+ DMA_BIDIRECTIONAL);
-+
-+ tmp = spi_sync(spi, &host->m);
-+
-+ if (host->dma_dev)
-+ dma_sync_single_for_cpu(host->dma_dev,
-+ host->data_dma, sizeof(*scratch),
-+ DMA_BIDIRECTIONAL);
-+
-+ if (tmp < 0) {
-+ if (!data->error)
-+ data->error = tmp;
-+ return;
-+ }
-+
-+ /* Ideally we collected "not busy" status with one I/O,
-+ * avoiding wasteful byte-at-a-time scanning... but more
-+ * I/O is often needed.
-+ */
-+ for (tmp = 2; tmp < statlen; tmp++) {
-+ if (scratch->status[tmp] != 0)
-+ return;
-+ }
-+ tmp = mmc_spi_wait_unbusy(host, writeblock_timeout);
-+ if (tmp < 0 && !data->error)
-+ data->error = tmp;
-+ }
-+}
-+
-+/****************************************************************************/
-+
-+/*
-+ * MMC driver implementation -- the interface to the MMC stack
-+ */
-+
-+static void mmc_spi_request(struct mmc_host *mmc, struct mmc_request *mrq)
-+{
-+ struct mmc_spi_host *host = mmc_priv(mmc);
-+ int status = -EINVAL;
-+
-+#ifdef DEBUG
-+ /* MMC core and layered drivers *MUST* issue SPI-aware commands */
-+ {
-+ struct mmc_command *cmd;
-+ int invalid = 0;
-+
-+ cmd = mrq->cmd;
-+ if (!mmc_spi_resp_type(cmd)) {
-+ dev_dbg(&host->spi->dev, "bogus command\n");
-+ cmd->error = -EINVAL;
-+ invalid = 1;
-+ }
-+
-+ cmd = mrq->stop;
-+ if (cmd && !mmc_spi_resp_type(cmd)) {
-+ dev_dbg(&host->spi->dev, "bogus STOP command\n");
-+ cmd->error = -EINVAL;
-+ invalid = 1;
-+ }
-+
-+ if (invalid) {
-+ dump_stack();
-+ mmc_request_done(host->mmc, mrq);
-+ return;
-+ }
-+ }
-+#endif
-+
-+ /* issue command; then optionally data and stop */
-+ status = mmc_spi_command_send(host, mrq, mrq->cmd, mrq->data != NULL);
-+ if (status == 0 && mrq->data) {
-+ mmc_spi_data_do(host, mrq->cmd, mrq->data, mrq->data->blksz);
-+ if (mrq->stop)
-+ status = mmc_spi_command_send(host, mrq, mrq->stop, 0);
-+ else
-+ mmc_cs_off(host);
-+ }
-+
-+ mmc_request_done(host->mmc, mrq);
-+}
-+
-+/* See Section 6.4.1, in SD "Simplified Physical Layer Specification 2.0"
-+ *
-+ * NOTE that here we can't know that the card has just been powered up;
-+ * not all MMC/SD sockets support power switching.
-+ *
-+ * FIXME when the card is still in SPI mode, e.g. from a previous kernel,
-+ * this doesn't seem to do the right thing at all...
-+ */
-+static void mmc_spi_initsequence(struct mmc_spi_host *host)
-+{
-+ /* Try to be very sure any previous command has completed;
-+ * wait till not-busy, skip debris from any old commands.
-+ */
-+ mmc_spi_wait_unbusy(host, r1b_timeout);
-+ mmc_spi_readbytes(host, 10);
-+
-+ /*
-+ * Do a burst with chipselect active-high. We need to do this to
-+ * meet the requirement of 74 clock cycles with both chipselect
-+ * and CMD (MOSI) high before CMD0 ... after the card has been
-+ * powered up to Vdd(min), and so is ready to take commands.
-+ *
-+ * Some cards are particularly needy of this (e.g. Viking "SD256")
-+ * while most others don't seem to care.
-+ *
-+ * Note that this is one of the places MMC/SD plays games with the
-+ * SPI protocol. Another is that when chipselect is released while
-+ * the card returns BUSY status, the clock must issue several cycles
-+ * with chipselect high before the card will stop driving its output.
-+ */
-+ host->spi->mode |= SPI_CS_HIGH;
-+ if (spi_setup(host->spi) != 0) {
-+ /* Just warn; most cards work without it. */
-+ dev_warn(&host->spi->dev,
-+ "can't change chip-select polarity\n");
-+ host->spi->mode &= ~SPI_CS_HIGH;
-+ } else {
-+ mmc_spi_readbytes(host, 18);
-+
-+ host->spi->mode &= ~SPI_CS_HIGH;
-+ if (spi_setup(host->spi) != 0) {
-+ /* Wot, we can't get the same setup we had before? */
-+ dev_err(&host->spi->dev,
-+ "can't restore chip-select polarity\n");
-+ }
-+ }
-+}
-+
-+static char *mmc_powerstring(u8 power_mode)
-+{
-+ switch (power_mode) {
-+ case MMC_POWER_OFF: return "off";
-+ case MMC_POWER_UP: return "up";
-+ case MMC_POWER_ON: return "on";
-+ }
-+ return "?";
-+}
-+
-+static void mmc_spi_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
-+{
-+ struct mmc_spi_host *host = mmc_priv(mmc);
-+
-+ if (host->power_mode != ios->power_mode) {
-+ int canpower;
-+
-+ canpower = host->pdata && host->pdata->setpower;
-+
-+ dev_dbg(&host->spi->dev, "mmc_spi: power %s (%d)%s\n",
-+ mmc_powerstring(ios->power_mode),
-+ ios->vdd,
-+ canpower ? ", can switch" : "");
-+
-+ /* switch power on/off if possible, accounting for
-+ * max 250msec powerup time if needed.
-+ */
-+ if (canpower) {
-+ switch (ios->power_mode) {
-+ case MMC_POWER_OFF:
-+ case MMC_POWER_UP:
-+ host->pdata->setpower(&host->spi->dev,
-+ ios->vdd);
-+ if (ios->power_mode == MMC_POWER_UP)
-+ msleep(host->powerup_msecs);
-+ }
-+ }
-+
-+ /* See 6.4.1 in the simplified SD card physical spec 2.0 */
-+ if (ios->power_mode == MMC_POWER_ON)
-+ mmc_spi_initsequence(host);
-+
-+ /* If powering down, ground all card inputs to avoid power
-+ * delivery from data lines! On a shared SPI bus, this
-+ * will probably be temporary; 6.4.2 of the simplified SD
-+ * spec says this must last at least 1msec.
-+ *
-+ * - Clock low means CPOL 0, e.g. mode 0
-+ * - MOSI low comes from writing zero
-+ * - Chipselect is usually active low...
-+ */
-+ if (canpower && ios->power_mode == MMC_POWER_OFF) {
-+ int mres;
-+
-+ host->spi->mode &= ~(SPI_CPOL|SPI_CPHA);
-+ mres = spi_setup(host->spi);
-+ if (mres < 0)
-+ dev_dbg(&host->spi->dev,
-+ "switch to SPI mode 0 failed\n");
-+
-+ if (spi_w8r8(host->spi, 0x00) < 0)
-+ dev_dbg(&host->spi->dev,
-+ "put spi signals to low failed\n");
-+
-+ /*
-+ * Now clock should be low due to spi mode 0;
-+ * MOSI should be low because of written 0x00;
-+ * chipselect should be low (it is active low)
-+ * power supply is off, so now MMC is off too!
-+ *
-+ * FIXME no, chipselect can be high since the
-+ * device is inactive and SPI_CS_HIGH is clear...
-+ */
-+ msleep(10);
-+ if (mres == 0) {
-+ host->spi->mode |= (SPI_CPOL|SPI_CPHA);
-+ mres = spi_setup(host->spi);
-+ if (mres < 0)
-+ dev_dbg(&host->spi->dev,
-+ "switch back to SPI mode 3"
-+ " failed\n");
-+ }
-+ }
-+
-+ host->power_mode = ios->power_mode;
-+ }
-+
-+ if (host->spi->max_speed_hz != ios->clock && ios->clock != 0) {
-+ int status;
-+
-+ host->spi->max_speed_hz = ios->clock;
-+ status = spi_setup(host->spi);
-+ dev_dbg(&host->spi->dev,
-+ "mmc_spi: clock to %d Hz, %d\n",
-+ host->spi->max_speed_hz, status);
-+ }
-+}
-+
-+static int mmc_spi_get_ro(struct mmc_host *mmc)
-+{
-+ struct mmc_spi_host *host = mmc_priv(mmc);
-+
-+ if (host->pdata && host->pdata->get_ro)
-+ return host->pdata->get_ro(mmc->parent);
-+ /* board doesn't support read only detection; assume writeable */
-+ return 0;
-+}
-+
-+
-+static const struct mmc_host_ops mmc_spi_ops = {
-+ .request = mmc_spi_request,
-+ .set_ios = mmc_spi_set_ios,
-+ .get_ro = mmc_spi_get_ro,
-+};
-+
-+
-+/****************************************************************************/
-+
-+/*
-+ * SPI driver implementation
-+ */
-+
-+static irqreturn_t
-+mmc_spi_detect_irq(int irq, void *mmc)
-+{
-+ struct mmc_spi_host *host = mmc_priv(mmc);
-+ u16 delay_msec = max(host->pdata->detect_delay, (u16)100);
-+
-+ mmc_detect_change(mmc, msecs_to_jiffies(delay_msec));
-+ return IRQ_HANDLED;
-+}
-+
-+struct count_children {
-+ unsigned n;
-+ struct bus_type *bus;
-+};
-+
-+static int maybe_count_child(struct device *dev, void *c)
-+{
-+ struct count_children *ccp = c;
-+
-+ if (dev->bus == ccp->bus) {
-+ if (ccp->n)
-+ return -EBUSY;
-+ ccp->n++;
-+ }
-+ return 0;
-+}
-+
-+static int mmc_spi_probe(struct spi_device *spi)
-+{
-+ void *ones;
-+ struct mmc_host *mmc;
-+ struct mmc_spi_host *host;
-+ int status;
-+
-+ /* MMC and SD specs only seem to care that sampling is on the
-+ * rising edge ... meaning SPI modes 0 or 3. So either SPI mode
-+ * should be legit. We'll use mode 0 since it seems to be a
-+ * bit less troublesome on some hardware ... unclear why.
-+ */
-+ spi->mode = SPI_MODE_0;
-+ spi->bits_per_word = 8;
-+
-+ status = spi_setup(spi);
-+ if (status < 0) {
-+ dev_dbg(&spi->dev, "needs SPI mode %02x, %d KHz; %d\n",
-+ spi->mode, spi->max_speed_hz / 1000,
-+ status);
-+ return status;
-+ }
-+
-+ /* We can use the bus safely iff nobody else will interfere with us.
-+ * Most commands consist of one SPI message to issue a command, then
-+ * several more to collect its response, then possibly more for data
-+ * transfer. Clocking access to other devices during that period will
-+ * corrupt the command execution.
-+ *
-+ * Until we have software primitives which guarantee non-interference,
-+ * we'll aim for a hardware-level guarantee.
-+ *
-+ * REVISIT we can't guarantee another device won't be added later...
-+ */
-+ if (spi->master->num_chipselect > 1) {
-+ struct count_children cc;
-+
-+ cc.n = 0;
-+ cc.bus = spi->dev.bus;
-+ status = device_for_each_child(spi->dev.parent, &cc,
-+ maybe_count_child);
-+ if (status < 0) {
-+ dev_err(&spi->dev, "can't share SPI bus\n");
-+ return status;
-+ }
-+
-+ dev_warn(&spi->dev, "ASSUMING SPI bus stays unshared!\n");
-+ }
-+
-+ /* We need a supply of ones to transmit. This is the only time
-+ * the CPU touches these, so cache coherency isn't a concern.
-+ *
-+ * NOTE if many systems use more than one MMC-over-SPI connector
-+ * it'd save some memory to share this. That's evidently rare.
-+ */
-+ status = -ENOMEM;
-+ ones = kmalloc(MMC_SPI_BLOCKSIZE, GFP_KERNEL);
-+ if (!ones)
-+ goto nomem;
-+ memset(ones, 0xff, MMC_SPI_BLOCKSIZE);
-+
-+ mmc = mmc_alloc_host(sizeof(*host), &spi->dev);
-+ if (!mmc)
-+ goto nomem;
-+
-+ mmc->ops = &mmc_spi_ops;
-+ mmc->max_blk_size = MMC_SPI_BLOCKSIZE;
-+
-+ /* As long as we keep track of the number of successfully
-+ * transmitted blocks, we're good for multiwrite.
-+ */
-+ mmc->caps = MMC_CAP_SPI | MMC_CAP_MULTIWRITE;
-+
-+ /* SPI doesn't need the lowspeed device identification thing for
-+ * MMC or SD cards, since it never comes up in open drain mode.
-+ * That's good; some SPI masters can't handle very low speeds!
-+ *
-+ * However, low speed SDIO cards need not handle over 400 KHz;
-+ * that's the only reason not to use a few MHz for f_min (until
-+ * the upper layer reads the target frequency from the CSD).
-+ */
-+ mmc->f_min = 400000;
-+ mmc->f_max = spi->max_speed_hz;
-+
-+ host = mmc_priv(mmc);
-+ host->mmc = mmc;
-+ host->spi = spi;
-+
-+ host->ones = ones;
-+
-+ /* Platform data is used to hook up things like card sensing
-+ * and power switching gpios.
-+ */
-+ host->pdata = spi->dev.platform_data;
-+ if (host->pdata)
-+ mmc->ocr_avail = host->pdata->ocr_mask;
-+ if (!mmc->ocr_avail) {
-+ dev_warn(&spi->dev, "ASSUMING 3.2-3.4 V slot power\n");
-+ mmc->ocr_avail = MMC_VDD_32_33|MMC_VDD_33_34;
-+ }
-+ if (host->pdata && host->pdata->setpower) {
-+ host->powerup_msecs = host->pdata->powerup_msecs;
-+ if (!host->powerup_msecs || host->powerup_msecs > 250)
-+ host->powerup_msecs = 250;
-+ }
-+
-+ dev_set_drvdata(&spi->dev, mmc);
-+
-+ /* preallocate dma buffers */
-+ host->data = kmalloc(sizeof(*host->data), GFP_KERNEL);
-+ if (!host->data)
-+ goto fail_nobuf1;
-+
-+//FIXME
-+#if 0
-+ if (spi->master->dev.parent->dma_mask) {
-+ struct device *dev = spi->master->dev.parent;
-+
-+ host->dma_dev = dev;
-+ host->ones_dma = dma_map_single(dev, ones,
-+ MMC_SPI_BLOCKSIZE, DMA_TO_DEVICE);
-+ host->data_dma = dma_map_single(dev, host->data,
-+ sizeof(*host->data), DMA_BIDIRECTIONAL);
-+
-+ /* REVISIT in theory those map operations can fail... */
-+
-+ dma_sync_single_for_cpu(host->dma_dev,
-+ host->data_dma, sizeof(*host->data),
-+ DMA_BIDIRECTIONAL);
-+ }
-+#endif
-+
-+ /* setup message for status/busy readback */
-+ spi_message_init(&host->readback);
-+ host->readback.is_dma_mapped = (host->dma_dev != NULL);
-+
-+ spi_message_add_tail(&host->status, &host->readback);
-+ host->status.tx_buf = host->ones;
-+ host->status.tx_dma = host->ones_dma;
-+ host->status.rx_buf = &host->data->status;
-+ host->status.rx_dma = host->data_dma + offsetof(struct scratch, status);
-+ host->status.cs_change = 1;
-+
-+ /* register card detect irq */
-+ if (host->pdata && host->pdata->init) {
-+ status = host->pdata->init(&spi->dev, mmc_spi_detect_irq, mmc);
-+ if (status != 0)
-+ goto fail_glue_init;
-+ }
-+
-+ status = mmc_add_host(mmc);
-+ if (status != 0)
-+ goto fail_add_host;
-+
-+ dev_info(&spi->dev, "SD/MMC host %s%s%s%s\n",
-+ mmc->class_dev.bus_id,
-+ host->dma_dev ? "" : ", no DMA",
-+ (host->pdata && host->pdata->get_ro)
-+ ? "" : ", no WP",
-+ (host->pdata && host->pdata->setpower)
-+ ? "" : ", no poweroff");
-+ return 0;
-+
-+fail_add_host:
-+ mmc_remove_host (mmc);
-+fail_glue_init:
-+ if (host->dma_dev)
-+ dma_unmap_single(host->dma_dev, host->data_dma,
-+ sizeof(*host->data), DMA_BIDIRECTIONAL);
-+ kfree(host->data);
-+
-+fail_nobuf1:
-+ mmc_free_host(mmc);
-+ dev_set_drvdata(&spi->dev, NULL);
-+
-+nomem:
-+ kfree(ones);
-+ return status;
-+}
-+
-+
-+static int __devexit mmc_spi_remove(struct spi_device *spi)
-+{
-+ struct mmc_host *mmc = dev_get_drvdata(&spi->dev);
-+ struct mmc_spi_host *host;
-+
-+ if (mmc) {
-+ host = mmc_priv(mmc);
-+
-+ /* prevent new mmc_detect_change() calls */
-+ if (host->pdata && host->pdata->exit)
-+ host->pdata->exit(&spi->dev, mmc);
-+
-+ mmc_remove_host(mmc);
-+
-+ if (host->dma_dev) {
-+ dma_unmap_single(host->dma_dev, host->ones_dma,
-+ MMC_SPI_BLOCKSIZE, DMA_TO_DEVICE);
-+ dma_unmap_single(host->dma_dev, host->data_dma,
-+ sizeof(*host->data), DMA_BIDIRECTIONAL);
-+ }
-+
-+ kfree(host->data);
-+ kfree(host->ones);
-+
-+ spi->max_speed_hz = mmc->f_max;
-+ mmc_free_host(mmc);
-+ dev_set_drvdata(&spi->dev, NULL);
-+ }
-+ return 0;
-+}
-+
-+
-+static struct spi_driver mmc_spi_driver = {
-+ .driver = {
-+ .name = "mmc_spi",
-+ .bus = &spi_bus_type,
-+ .owner = THIS_MODULE,
-+ },
-+ .probe = mmc_spi_probe,
-+ .remove = __devexit_p(mmc_spi_remove),
-+};
-+
-+
-+static int __init mmc_spi_init(void)
-+{
-+ return spi_register_driver(&mmc_spi_driver);
-+}
-+module_init(mmc_spi_init);
-+
-+
-+static void __exit mmc_spi_exit(void)
-+{
-+ spi_unregister_driver(&mmc_spi_driver);
-+}
-+module_exit(mmc_spi_exit);
-+
-+
-+MODULE_AUTHOR("Mike Lavender, David Brownell, "
-+ "Hans-Peter Nilsson, Jan Nikitenko");
-+MODULE_DESCRIPTION("SPI SD/MMC host driver");
-+MODULE_LICENSE("GPL");
---- /dev/null
-+++ b/include/linux/spi/mmc_spi.h
-@@ -0,0 +1,33 @@
-+#ifndef __LINUX_SPI_MMC_SPI_H
-+#define __LINUX_SPI_MMC_SPI_H
-+
-+struct device;
-+struct mmc_host;
-+
-+/* Put this in platform_data of a device being used to manage an MMC/SD
-+ * card slot. (Modeled after PXA mmc glue; see that for usage examples.)
-+ *
-+ * REVISIT This is not a spi-specific notion. Any card slot should be
-+ * able to handle it. If the MMC core doesn't adopt this kind of notion,
-+ * switch the "struct device *" parameters over to "struct spi_device *".
-+ */
-+struct mmc_spi_platform_data {
-+ /* driver activation and (optional) card detect irq hookup */
-+ int (*init)(struct device *,
-+ irqreturn_t (*)(int, void *),
-+ void *);
-+ void (*exit)(struct device *, void *);
-+
-+ /* sense switch on sd cards */
-+ int (*get_ro)(struct device *);
-+
-+ /* how long to debounce card detect, in msecs */
-+ u16 detect_delay;
-+
-+ /* power management */
-+ u16 powerup_msecs; /* delay of up to 250 msec */
-+ u32 ocr_mask; /* available voltages */
-+ void (*setpower)(struct device *, unsigned int maskval);
-+};
-+
-+#endif /* __LINUX_SPI_MMC_SPI_H */
---- a/drivers/mmc/core/bus.c
-+++ b/drivers/mmc/core/bus.c
-@@ -19,6 +19,7 @@
-
- #include "sysfs.h"
- #include "core.h"
-+#include "sdio_cis.h"
- #include "bus.h"
-
- #define dev_to_mmc_card(d) container_of(d, struct mmc_card, dev)
-@@ -34,6 +35,8 @@ static ssize_t mmc_type_show(struct devi
- return sprintf(buf, "MMC\n");
- case MMC_TYPE_SD:
- return sprintf(buf, "SD\n");
-+ case MMC_TYPE_SDIO:
-+ return sprintf(buf, "SDIO\n");
- default:
- return -EFAULT;
- }
-@@ -55,36 +58,37 @@ static int mmc_bus_match(struct device *
- }
-
- static int
--mmc_bus_uevent(struct device *dev, char **envp, int num_envp, char *buf,
-- int buf_size)
-+mmc_bus_uevent(struct device *dev, char **envp,
-+ int num_envp, char *buffer, int buffer_size)
- {
- struct mmc_card *card = dev_to_mmc_card(dev);
-- int retval = 0, i = 0, length = 0;
--
--#define add_env(fmt,val) do { \
-- retval = add_uevent_var(envp, num_envp, &i, \
-- buf, buf_size, &length, \
-- fmt, val); \
-- if (retval) \
-- return retval; \
--} while (0);
-+ const char *type;
-+ int retval = 0;
-+ int i = 0, len = 0;
-
- switch (card->type) {
- case MMC_TYPE_MMC:
-- add_env("MMC_TYPE=%s", "MMC");
-+ type = "MMC";
- break;
- case MMC_TYPE_SD:
-- add_env("MMC_TYPE=%s", "SD");
-+ type = "SD";
- break;
-+ case MMC_TYPE_SDIO:
-+ type = "SDIO";
-+ break;
-+ default:
-+ type = NULL;
- }
-
-- add_env("MMC_NAME=%s", mmc_card_name(card));
--
--#undef add_env
-+ if (type) {
-+ retval = add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &len, "MMC_TYPE=%s", type);
-+ if (retval)
-+ return retval;
-+ }
-
-- envp[i] = NULL;
-+ retval = add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &len, "MMC_NAME=%s", mmc_card_name(card));
-
-- return 0;
-+ return retval;
- }
-
- static int mmc_bus_probe(struct device *dev)
-@@ -176,6 +180,11 @@ static void mmc_release_card(struct devi
- {
- struct mmc_card *card = dev_to_mmc_card(dev);
-
-+ sdio_free_common_cis(card);
-+
-+ if (card->info)
-+ kfree(card->info);
-+
- kfree(card);
- }
-
-@@ -221,15 +230,25 @@ int mmc_add_card(struct mmc_card *card)
- if (mmc_card_blockaddr(card))
- type = "SDHC";
- break;
-+ case MMC_TYPE_SDIO:
-+ type = "SDIO";
-+ break;
- default:
- type = "?";
- break;
- }
-
-- printk(KERN_INFO "%s: new %s%s card at address %04x\n",
-- mmc_hostname(card->host),
-- mmc_card_highspeed(card) ? "high speed " : "",
-- type, card->rca);
-+ if (mmc_host_is_spi(card->host)) {
-+ printk(KERN_INFO "%s: new %s%s card on SPI\n",
-+ mmc_hostname(card->host),
-+ mmc_card_highspeed(card) ? "high speed " : "",
-+ type);
-+ } else {
-+ printk(KERN_INFO "%s: new %s%s card at address %04x\n",
-+ mmc_hostname(card->host),
-+ mmc_card_highspeed(card) ? "high speed " : "",
-+ type, card->rca);
-+ }
-
- card->dev.uevent_suppress = 1;
-
-@@ -261,8 +280,13 @@ int mmc_add_card(struct mmc_card *card)
- void mmc_remove_card(struct mmc_card *card)
- {
- if (mmc_card_present(card)) {
-- printk(KERN_INFO "%s: card %04x removed\n",
-- mmc_hostname(card->host), card->rca);
-+ if (mmc_host_is_spi(card->host)) {
-+ printk(KERN_INFO "%s: SPI card removed\n",
-+ mmc_hostname(card->host));
-+ } else {
-+ printk(KERN_INFO "%s: card %04x removed\n",
-+ mmc_hostname(card->host), card->rca);
-+ }
-
- if (card->host->bus_ops->sysfs_remove)
- card->host->bus_ops->sysfs_remove(card->host, card);
---- a/drivers/mmc/core/core.c
-+++ b/drivers/mmc/core/core.c
-@@ -18,7 +18,7 @@
- #include <linux/delay.h>
- #include <linux/pagemap.h>
- #include <linux/err.h>
--#include <asm/scatterlist.h>
-+#include <linux/leds.h>
- #include <linux/scatterlist.h>
-
- #include <linux/mmc/card.h>
-@@ -29,16 +29,27 @@
- #include "core.h"
- #include "bus.h"
- #include "host.h"
-+#include "sdio_bus.h"
-
- #include "mmc_ops.h"
- #include "sd_ops.h"
-+#include "sdio_ops.h"
-
- extern int mmc_attach_mmc(struct mmc_host *host, u32 ocr);
- extern int mmc_attach_sd(struct mmc_host *host, u32 ocr);
-+extern int mmc_attach_sdio(struct mmc_host *host, u32 ocr);
-
- static struct workqueue_struct *workqueue;
-
- /*
-+ * Enabling software CRCs on the data blocks can be a significant (30%)
-+ * performance cost, and for other reasons may not always be desired.
-+ * So we allow it it to be disabled.
-+ */
-+int use_spi_crc = 1;
-+module_param(use_spi_crc, bool, 0);
-+
-+/*
- * Internal function. Schedule delayed work in the MMC work queue.
- */
- static int mmc_schedule_delayed_work(struct delayed_work *work,
-@@ -68,6 +79,11 @@ void mmc_request_done(struct mmc_host *h
- struct mmc_command *cmd = mrq->cmd;
- int err = cmd->error;
-
-+ if (err && cmd->retries && mmc_host_is_spi(host)) {
-+ if (cmd->resp[0] & R1_SPI_ILLEGAL_COMMAND)
-+ cmd->retries = 0;
-+ }
-+
- if (err && cmd->retries) {
- pr_debug("%s: req failed (CMD%u): %d, retrying...\n",
- mmc_hostname(host), cmd->opcode, err);
-@@ -76,6 +92,8 @@ void mmc_request_done(struct mmc_host *h
- cmd->error = 0;
- host->ops->request(host, mrq);
- } else {
-+ led_trigger_event(host->led, LED_OFF);
-+
- pr_debug("%s: req done (CMD%u): %d: %08x %08x %08x %08x\n",
- mmc_hostname(host), cmd->opcode, err,
- cmd->resp[0], cmd->resp[1],
-@@ -118,7 +136,7 @@ mmc_start_request(struct mmc_host *host,
- "tsac %d ms nsac %d\n",
- mmc_hostname(host), mrq->data->blksz,
- mrq->data->blocks, mrq->data->flags,
-- mrq->data->timeout_ns / 10000000,
-+ mrq->data->timeout_ns / 1000000,
- mrq->data->timeout_clks);
- }
-
-@@ -130,6 +148,8 @@ mmc_start_request(struct mmc_host *host,
-
- WARN_ON(!host->claimed);
-
-+ led_trigger_event(host->led, LED_FULL);
-+
- mrq->cmd->error = 0;
- mrq->cmd->mrq = mrq;
- if (mrq->data) {
-@@ -199,7 +219,7 @@ int mmc_wait_for_cmd(struct mmc_host *ho
- {
- struct mmc_request mrq;
-
-- BUG_ON(!host->claimed);
-+ WARN_ON(!host->claimed);
-
- memset(&mrq, 0, sizeof(struct mmc_request));
-
-@@ -220,17 +240,24 @@ EXPORT_SYMBOL(mmc_wait_for_cmd);
- * mmc_set_data_timeout - set the timeout for a data command
- * @data: data phase for command
- * @card: the MMC card associated with the data transfer
-- * @write: flag to differentiate reads from writes
- *
- * Computes the data timeout parameters according to the
- * correct algorithm given the card type.
- */
--void mmc_set_data_timeout(struct mmc_data *data, const struct mmc_card *card,
-- int write)
-+void mmc_set_data_timeout(struct mmc_data *data, const struct mmc_card *card)
- {
- unsigned int mult;
-
- /*
-+ * SDIO cards only define an upper 1 s limit on access.
-+ */
-+ if (mmc_card_sdio(card)) {
-+ data->timeout_ns = 1000000000;
-+ data->timeout_clks = 0;
-+ return;
-+ }
-+
-+ /*
- * SD cards use a 100 multiplier rather than 10
- */
- mult = mmc_card_sd(card) ? 100 : 10;
-@@ -239,7 +266,7 @@ void mmc_set_data_timeout(struct mmc_dat
- * Scale up the multiplier (and therefore the timeout) by
- * the r2w factor for writes.
- */
-- if (write)
-+ if (data->flags & MMC_DATA_WRITE)
- mult <<= card->csd.r2w_factor;
-
- data->timeout_ns = card->csd.tacc_ns * mult;
-@@ -255,7 +282,7 @@ void mmc_set_data_timeout(struct mmc_dat
- timeout_us += data->timeout_clks * 1000 /
- (card->host->ios.clock / 1000);
-
-- if (write)
-+ if (data->flags & MMC_DATA_WRITE)
- limit_us = 250000;
- else
- limit_us = 100000;
-@@ -272,15 +299,20 @@ void mmc_set_data_timeout(struct mmc_dat
- EXPORT_SYMBOL(mmc_set_data_timeout);
-
- /**
-- * mmc_claim_host - exclusively claim a host
-+ * __mmc_claim_host - exclusively claim a host
- * @host: mmc host to claim
-+ * @abort: whether or not the operation should be aborted
- *
-- * Claim a host for a set of operations.
-+ * Claim a host for a set of operations. If @abort is non null and
-+ * dereference a non-zero value then this will return prematurely with
-+ * that non-zero value without acquiring the lock. Returns zero
-+ * with the lock held otherwise.
- */
--void mmc_claim_host(struct mmc_host *host)
-+int __mmc_claim_host(struct mmc_host *host, atomic_t *abort)
- {
- DECLARE_WAITQUEUE(wait, current);
- unsigned long flags;
-+ int stop;
-
- might_sleep();
-
-@@ -288,19 +320,24 @@ void mmc_claim_host(struct mmc_host *hos
- spin_lock_irqsave(&host->lock, flags);
- while (1) {
- set_current_state(TASK_UNINTERRUPTIBLE);
-- if (!host->claimed)
-+ stop = abort ? atomic_read(abort) : 0;
-+ if (stop || !host->claimed)
- break;
- spin_unlock_irqrestore(&host->lock, flags);
- schedule();
- spin_lock_irqsave(&host->lock, flags);
- }
- set_current_state(TASK_RUNNING);
-- host->claimed = 1;
-+ if (!stop)
-+ host->claimed = 1;
-+ else
-+ wake_up(&host->wq);
- spin_unlock_irqrestore(&host->lock, flags);
- remove_wait_queue(&host->wq, &wait);
-+ return stop;
- }
-
--EXPORT_SYMBOL(mmc_claim_host);
-+EXPORT_SYMBOL(__mmc_claim_host);
-
- /**
- * mmc_release_host - release a host
-@@ -313,7 +350,7 @@ void mmc_release_host(struct mmc_host *h
- {
- unsigned long flags;
-
-- BUG_ON(!host->claimed);
-+ WARN_ON(!host->claimed);
-
- spin_lock_irqsave(&host->lock, flags);
- host->claimed = 0;
-@@ -433,19 +470,32 @@ static void mmc_power_up(struct mmc_host
- int bit = fls(host->ocr_avail) - 1;
-
- host->ios.vdd = bit;
-- host->ios.bus_mode = MMC_BUSMODE_OPENDRAIN;
-- host->ios.chip_select = MMC_CS_DONTCARE;
-+ if (mmc_host_is_spi(host)) {
-+ host->ios.chip_select = MMC_CS_HIGH;
-+ host->ios.bus_mode = MMC_BUSMODE_PUSHPULL;
-+ } else {
-+ host->ios.chip_select = MMC_CS_DONTCARE;
-+ host->ios.bus_mode = MMC_BUSMODE_OPENDRAIN;
-+ }
- host->ios.power_mode = MMC_POWER_UP;
- host->ios.bus_width = MMC_BUS_WIDTH_1;
- host->ios.timing = MMC_TIMING_LEGACY;
- mmc_set_ios(host);
-
-- mmc_delay(1);
-+ /*
-+ * This delay should be sufficient to allow the power supply
-+ * to reach the minimum voltage.
-+ */
-+ mmc_delay(2);
-
- host->ios.clock = host->f_min;
- host->ios.power_mode = MMC_POWER_ON;
- mmc_set_ios(host);
-
-+ /*
-+ * This delay must be at least 74 clock sizes, or 1 ms, or the
-+ * time required to reach a stable voltage.
-+ */
- mmc_delay(2);
- }
-
-@@ -453,8 +503,10 @@ static void mmc_power_off(struct mmc_hos
- {
- host->ios.clock = 0;
- host->ios.vdd = 0;
-- host->ios.bus_mode = MMC_BUSMODE_OPENDRAIN;
-- host->ios.chip_select = MMC_CS_DONTCARE;
-+ if (!mmc_host_is_spi(host)) {
-+ host->ios.bus_mode = MMC_BUSMODE_OPENDRAIN;
-+ host->ios.chip_select = MMC_CS_DONTCARE;
-+ }
- host->ios.power_mode = MMC_POWER_OFF;
- host->ios.bus_width = MMC_BUS_WIDTH_1;
- host->ios.timing = MMC_TIMING_LEGACY;
-@@ -511,7 +563,7 @@ void mmc_attach_bus(struct mmc_host *hos
- BUG_ON(!host);
- BUG_ON(!ops);
-
-- BUG_ON(!host->claimed);
-+ WARN_ON(!host->claimed);
-
- spin_lock_irqsave(&host->lock, flags);
-
-@@ -535,8 +587,8 @@ void mmc_detach_bus(struct mmc_host *hos
-
- BUG_ON(!host);
-
-- BUG_ON(!host->claimed);
-- BUG_ON(!host->bus_ops);
-+ WARN_ON(!host->claimed);
-+ WARN_ON(!host->bus_ops);
-
- spin_lock_irqsave(&host->lock, flags);
-
-@@ -564,7 +616,7 @@ void mmc_detect_change(struct mmc_host *
- #ifdef CONFIG_MMC_DEBUG
- unsigned long flags;
- spin_lock_irqsave(&host->lock, flags);
-- BUG_ON(host->removed);
-+ WARN_ON(host->removed);
- spin_unlock_irqrestore(&host->lock, flags);
- #endif
-
-@@ -597,24 +649,38 @@ void mmc_rescan(struct work_struct *work
-
- mmc_send_if_cond(host, host->ocr_avail);
-
-+ /*
-+ * First we search for SDIO...
-+ */
-+ err = mmc_send_io_op_cond(host, 0, &ocr);
-+ if (!err) {
-+ if (mmc_attach_sdio(host, ocr))
-+ mmc_power_off(host);
-+ return;
-+ }
-+
-+ /*
-+ * ...then normal SD...
-+ */
- err = mmc_send_app_op_cond(host, 0, &ocr);
-- if (err == MMC_ERR_NONE) {
-+ if (!err) {
- if (mmc_attach_sd(host, ocr))
- mmc_power_off(host);
-- } else {
-- /*
-- * If we fail to detect any SD cards then try
-- * searching for MMC cards.
-- */
-- err = mmc_send_op_cond(host, 0, &ocr);
-- if (err == MMC_ERR_NONE) {
-- if (mmc_attach_mmc(host, ocr))
-- mmc_power_off(host);
-- } else {
-+ return;
-+ }
-+
-+ /*
-+ * ...and finally MMC.
-+ */
-+ err = mmc_send_op_cond(host, 0, &ocr);
-+ if (!err) {
-+ if (mmc_attach_mmc(host, ocr))
- mmc_power_off(host);
-- mmc_release_host(host);
-- }
-+ return;
- }
-+
-+ mmc_release_host(host);
-+ mmc_power_off(host);
- } else {
- if (host->bus_ops->detect && !host->bus_dead)
- host->bus_ops->detect(host);
-@@ -725,22 +791,38 @@ static int __init mmc_init(void)
- return -ENOMEM;
-
- ret = mmc_register_bus();
-- if (ret == 0) {
-- ret = mmc_register_host_class();
-- if (ret)
-- mmc_unregister_bus();
-- }
-+ if (ret)
-+ goto destroy_workqueue;
-+
-+ ret = mmc_register_host_class();
-+ if (ret)
-+ goto unregister_bus;
-+
-+ ret = sdio_register_bus();
-+ if (ret)
-+ goto unregister_host_class;
-+
-+ return 0;
-+
-+unregister_host_class:
-+ mmc_unregister_host_class();
-+unregister_bus:
-+ mmc_unregister_bus();
-+destroy_workqueue:
-+ destroy_workqueue(workqueue);
-+
- return ret;
- }
-
- static void __exit mmc_exit(void)
- {
-+ sdio_unregister_bus();
- mmc_unregister_host_class();
- mmc_unregister_bus();
- destroy_workqueue(workqueue);
- }
-
--module_init(mmc_init);
-+subsys_initcall(mmc_init);
- module_exit(mmc_exit);
-
- MODULE_LICENSE("GPL");
---- a/drivers/mmc/core/core.h
-+++ b/drivers/mmc/core/core.h
-@@ -48,5 +48,7 @@ void mmc_rescan(struct work_struct *work
- void mmc_start_host(struct mmc_host *host);
- void mmc_stop_host(struct mmc_host *host);
-
-+extern int use_spi_crc;
-+
- #endif
-
---- a/drivers/mmc/core/host.c
-+++ b/drivers/mmc/core/host.c
-@@ -15,6 +15,7 @@
- #include <linux/err.h>
- #include <linux/idr.h>
- #include <linux/pagemap.h>
-+#include <linux/leds.h>
-
- #include <linux/mmc/host.h>
-
-@@ -100,6 +101,9 @@ int mmc_add_host(struct mmc_host *host)
- {
- int err;
-
-+ WARN_ON((host->caps & MMC_CAP_SDIO_IRQ) &&
-+ !host->ops->enable_sdio_irq);
-+
- if (!idr_pre_get(&mmc_host_idr, GFP_KERNEL))
- return -ENOMEM;
-
-@@ -112,6 +116,8 @@ int mmc_add_host(struct mmc_host *host)
- snprintf(host->class_dev.bus_id, BUS_ID_SIZE,
- "mmc%d", host->index);
-
-+ led_trigger_register_simple(host->class_dev.bus_id, &host->led);
-+
- err = device_add(&host->class_dev);
- if (err)
- return err;
-@@ -137,6 +143,8 @@ void mmc_remove_host(struct mmc_host *ho
-
- device_del(&host->class_dev);
-
-+ led_trigger_unregister_simple(host->led);
-+
- spin_lock(&mmc_host_lock);
- idr_remove(&mmc_host_idr, host->index);
- spin_unlock(&mmc_host_lock);
---- a/drivers/mmc/core/mmc.c
-+++ b/drivers/mmc/core/mmc.c
-@@ -161,13 +161,12 @@ static int mmc_read_ext_csd(struct mmc_c
- {
- int err;
- u8 *ext_csd;
-+ unsigned int ext_csd_struct;
-
- BUG_ON(!card);
-
-- err = MMC_ERR_FAILED;
--
- if (card->csd.mmca_vsn < CSD_SPEC_VER_4)
-- return MMC_ERR_NONE;
-+ return 0;
-
- /*
- * As the ext_csd is so large and mostly unused, we don't store the
-@@ -176,13 +175,19 @@ static int mmc_read_ext_csd(struct mmc_c
- ext_csd = kmalloc(512, GFP_KERNEL);
- if (!ext_csd) {
- printk(KERN_ERR "%s: could not allocate a buffer to "
-- "receive the ext_csd. mmc v4 cards will be "
-- "treated as v3.\n", mmc_hostname(card->host));
-- return MMC_ERR_FAILED;
-+ "receive the ext_csd.\n", mmc_hostname(card->host));
-+ return -ENOMEM;
- }
-
- err = mmc_send_ext_csd(card, ext_csd);
-- if (err != MMC_ERR_NONE) {
-+ if (err) {
-+ /*
-+ * We all hosts that cannot perform the command
-+ * to fail more gracefully
-+ */
-+ if (err != -EINVAL)
-+ goto out;
-+
- /*
- * High capacity cards should have this "magic" size
- * stored in their CSD.
-@@ -197,18 +202,30 @@ static int mmc_read_ext_csd(struct mmc_c
- "EXT_CSD, performance might "
- "suffer.\n",
- mmc_hostname(card->host));
-- err = MMC_ERR_NONE;
-+ err = 0;
- }
-+
- goto out;
- }
-
-- card->ext_csd.sectors =
-- ext_csd[EXT_CSD_SEC_CNT + 0] << 0 |
-- ext_csd[EXT_CSD_SEC_CNT + 1] << 8 |
-- ext_csd[EXT_CSD_SEC_CNT + 2] << 16 |
-- ext_csd[EXT_CSD_SEC_CNT + 3] << 24;
-- if (card->ext_csd.sectors)
-- mmc_card_set_blockaddr(card);
-+ ext_csd_struct = ext_csd[EXT_CSD_REV];
-+ if (ext_csd_struct > 2) {
-+ printk(KERN_ERR "%s: unrecognised EXT_CSD structure "
-+ "version %d\n", mmc_hostname(card->host),
-+ ext_csd_struct);
-+ err = -EINVAL;
-+ goto out;
-+ }
-+
-+ if (ext_csd_struct >= 2) {
-+ card->ext_csd.sectors =
-+ ext_csd[EXT_CSD_SEC_CNT + 0] << 0 |
-+ ext_csd[EXT_CSD_SEC_CNT + 1] << 8 |
-+ ext_csd[EXT_CSD_SEC_CNT + 2] << 16 |
-+ ext_csd[EXT_CSD_SEC_CNT + 3] << 24;
-+ if (card->ext_csd.sectors)
-+ mmc_card_set_blockaddr(card);
-+ }
-
- switch (ext_csd[EXT_CSD_CARD_TYPE]) {
- case EXT_CSD_CARD_TYPE_52 | EXT_CSD_CARD_TYPE_26:
-@@ -246,7 +263,7 @@ static int mmc_init_card(struct mmc_host
- unsigned int max_dtr;
-
- BUG_ON(!host);
-- BUG_ON(!host->claimed);
-+ WARN_ON(!host->claimed);
-
- /*
- * Since we're changing the OCR value, we seem to
-@@ -258,19 +275,33 @@ static int mmc_init_card(struct mmc_host
-
- /* The extra bit indicates that we support high capacity */
- err = mmc_send_op_cond(host, ocr | (1 << 30), NULL);
-- if (err != MMC_ERR_NONE)
-+ if (err)
- goto err;
-
- /*
-+ * For SPI, enable CRC as appropriate.
-+ */
-+ if (mmc_host_is_spi(host)) {
-+ err = mmc_spi_set_crc(host, use_spi_crc);
-+ if (err)
-+ goto err;
-+ }
-+
-+ /*
- * Fetch CID from card.
- */
-- err = mmc_all_send_cid(host, cid);
-- if (err != MMC_ERR_NONE)
-+ if (mmc_host_is_spi(host))
-+ err = mmc_send_cid(host, cid);
-+ else
-+ err = mmc_all_send_cid(host, cid);
-+ if (err)
- goto err;
-
- if (oldcard) {
-- if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0)
-+ if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) {
-+ err = -ENOENT;
- goto err;
-+ }
-
- card = oldcard;
- } else {
-@@ -278,8 +309,10 @@ static int mmc_init_card(struct mmc_host
- * Allocate card structure.
- */
- card = mmc_alloc_card(host);
-- if (IS_ERR(card))
-+ if (IS_ERR(card)) {
-+ err = PTR_ERR(card);
- goto err;
-+ }
-
- card->type = MMC_TYPE_MMC;
- card->rca = 1;
-@@ -287,43 +320,47 @@ static int mmc_init_card(struct mmc_host
- }
-
- /*
-- * Set card RCA.
-+ * For native busses: set card RCA and quit open drain mode.
- */
-- err = mmc_set_relative_addr(card);
-- if (err != MMC_ERR_NONE)
-- goto free_card;
-+ if (!mmc_host_is_spi(host)) {
-+ err = mmc_set_relative_addr(card);
-+ if (err)
-+ goto free_card;
-
-- mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL);
-+ mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL);
-+ }
-
- if (!oldcard) {
- /*
- * Fetch CSD from card.
- */
- err = mmc_send_csd(card, card->raw_csd);
-- if (err != MMC_ERR_NONE)
-+ if (err)
- goto free_card;
-
- err = mmc_decode_csd(card);
-- if (err < 0)
-+ if (err)
- goto free_card;
- err = mmc_decode_cid(card);
-- if (err < 0)
-+ if (err)
- goto free_card;
- }
-
- /*
- * Select card, as all following commands rely on that.
- */
-- err = mmc_select_card(card);
-- if (err != MMC_ERR_NONE)
-- goto free_card;
-+ if (!mmc_host_is_spi(host)) {
-+ err = mmc_select_card(card);
-+ if (err)
-+ goto free_card;
-+ }
-
- if (!oldcard) {
- /*
-- * Fetch and process extened CSD.
-+ * Fetch and process extended CSD.
- */
- err = mmc_read_ext_csd(card);
-- if (err != MMC_ERR_NONE)
-+ if (err)
- goto free_card;
- }
-
-@@ -334,7 +371,7 @@ static int mmc_init_card(struct mmc_host
- (host->caps & MMC_CAP_MMC_HIGHSPEED)) {
- err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
- EXT_CSD_HS_TIMING, 1);
-- if (err != MMC_ERR_NONE)
-+ if (err)
- goto free_card;
-
- mmc_card_set_highspeed(card);
-@@ -363,7 +400,7 @@ static int mmc_init_card(struct mmc_host
- (host->caps & MMC_CAP_4_BIT_DATA)) {
- err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
- EXT_CSD_BUS_WIDTH, EXT_CSD_BUS_WIDTH_4);
-- if (err != MMC_ERR_NONE)
-+ if (err)
- goto free_card;
-
- mmc_set_bus_width(card->host, MMC_BUS_WIDTH_4);
-@@ -372,14 +409,14 @@ static int mmc_init_card(struct mmc_host
- if (!oldcard)
- host->card = card;
-
-- return MMC_ERR_NONE;
-+ return 0;
-
- free_card:
- if (!oldcard)
- mmc_remove_card(card);
- err:
-
-- return MMC_ERR_FAILED;
-+ return err;
- }
-
- /*
-@@ -413,7 +450,7 @@ static void mmc_detect(struct mmc_host *
-
- mmc_release_host(host);
-
-- if (err != MMC_ERR_NONE) {
-+ if (err) {
- mmc_remove(host);
-
- mmc_claim_host(host);
-@@ -480,7 +517,8 @@ static void mmc_suspend(struct mmc_host
- BUG_ON(!host->card);
-
- mmc_claim_host(host);
-- mmc_deselect_cards(host);
-+ if (!mmc_host_is_spi(host))
-+ mmc_deselect_cards(host);
- host->card->state &= ~MMC_STATE_HIGHSPEED;
- mmc_release_host(host);
- }
-@@ -502,7 +540,7 @@ static void mmc_resume(struct mmc_host *
- err = mmc_init_card(host, host->ocr, host->card);
- mmc_release_host(host);
-
-- if (err != MMC_ERR_NONE) {
-+ if (err) {
- mmc_remove(host);
-
- mmc_claim_host(host);
-@@ -536,11 +574,20 @@ int mmc_attach_mmc(struct mmc_host *host
- int err;
-
- BUG_ON(!host);
-- BUG_ON(!host->claimed);
-+ WARN_ON(!host->claimed);
-
- mmc_attach_bus(host, &mmc_ops);
-
- /*
-+ * We need to get OCR a different way for SPI.
-+ */
-+ if (mmc_host_is_spi(host)) {
-+ err = mmc_spi_read_ocr(host, 1, &ocr);
-+ if (err)
-+ goto err;
-+ }
-+
-+ /*
- * Sanity check the voltages that the card claims to
- * support.
- */
-@@ -565,7 +612,7 @@ int mmc_attach_mmc(struct mmc_host *host
- * Detect and init the card.
- */
- err = mmc_init_card(host, host->ocr, NULL);
-- if (err != MMC_ERR_NONE)
-+ if (err)
- goto err;
-
- mmc_release_host(host);
-@@ -587,6 +634,6 @@ err:
- printk(KERN_ERR "%s: error %d whilst initialising MMC card\n",
- mmc_hostname(host), err);
-
-- return 0;
-+ return err;
- }
-
---- a/drivers/mmc/core/mmc_ops.c
-+++ b/drivers/mmc/core/mmc_ops.c
-@@ -10,7 +10,6 @@
- */
-
- #include <linux/types.h>
--#include <asm/scatterlist.h>
- #include <linux/scatterlist.h>
-
- #include <linux/mmc/host.h>
-@@ -40,10 +39,10 @@ static int _mmc_select_card(struct mmc_h
- }
-
- err = mmc_wait_for_cmd(host, &cmd, MMC_CMD_RETRIES);
-- if (err != MMC_ERR_NONE)
-+ if (err)
- return err;
-
-- return MMC_ERR_NONE;
-+ return 0;
- }
-
- int mmc_select_card(struct mmc_card *card)
-@@ -63,23 +62,36 @@ int mmc_go_idle(struct mmc_host *host)
- int err;
- struct mmc_command cmd;
-
-- mmc_set_chip_select(host, MMC_CS_HIGH);
--
-- mmc_delay(1);
-+ /*
-+ * Non-SPI hosts need to prevent chipselect going active during
-+ * GO_IDLE; that would put chips into SPI mode. Remind them of
-+ * that in case of hardware that won't pull up DAT3/nCS otherwise.
-+ *
-+ * SPI hosts ignore ios.chip_select; it's managed according to
-+ * rules that must accomodate non-MMC slaves which this layer
-+ * won't even know about.
-+ */
-+ if (!mmc_host_is_spi(host)) {
-+ mmc_set_chip_select(host, MMC_CS_HIGH);
-+ mmc_delay(1);
-+ }
-
- memset(&cmd, 0, sizeof(struct mmc_command));
-
- cmd.opcode = MMC_GO_IDLE_STATE;
- cmd.arg = 0;
-- cmd.flags = MMC_RSP_NONE | MMC_CMD_BC;
-+ cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_NONE | MMC_CMD_BC;
-
- err = mmc_wait_for_cmd(host, &cmd, 0);
-
- mmc_delay(1);
-
-- mmc_set_chip_select(host, MMC_CS_DONTCARE);
-+ if (!mmc_host_is_spi(host)) {
-+ mmc_set_chip_select(host, MMC_CS_DONTCARE);
-+ mmc_delay(1);
-+ }
-
-- mmc_delay(1);
-+ host->use_spi_crc = 0;
-
- return err;
- }
-@@ -94,23 +106,33 @@ int mmc_send_op_cond(struct mmc_host *ho
- memset(&cmd, 0, sizeof(struct mmc_command));
-
- cmd.opcode = MMC_SEND_OP_COND;
-- cmd.arg = ocr;
-- cmd.flags = MMC_RSP_R3 | MMC_CMD_BCR;
-+ cmd.arg = mmc_host_is_spi(host) ? 0 : ocr;
-+ cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R3 | MMC_CMD_BCR;
-
- for (i = 100; i; i--) {
- err = mmc_wait_for_cmd(host, &cmd, 0);
-- if (err != MMC_ERR_NONE)
-+ if (err)
- break;
-
-- if (cmd.resp[0] & MMC_CARD_BUSY || ocr == 0)
-+ /* if we're just probing, do a single pass */
-+ if (ocr == 0)
- break;
-
-- err = MMC_ERR_TIMEOUT;
-+ /* otherwise wait until reset completes */
-+ if (mmc_host_is_spi(host)) {
-+ if (!(cmd.resp[0] & R1_SPI_IDLE))
-+ break;
-+ } else {
-+ if (cmd.resp[0] & MMC_CARD_BUSY)
-+ break;
-+ }
-+
-+ err = -ETIMEDOUT;
-
- mmc_delay(10);
- }
-
-- if (rocr)
-+ if (rocr && !mmc_host_is_spi(host))
- *rocr = cmd.resp[0];
-
- return err;
-@@ -131,12 +153,12 @@ int mmc_all_send_cid(struct mmc_host *ho
- cmd.flags = MMC_RSP_R2 | MMC_CMD_BCR;
-
- err = mmc_wait_for_cmd(host, &cmd, MMC_CMD_RETRIES);
-- if (err != MMC_ERR_NONE)
-+ if (err)
- return err;
-
- memcpy(cid, cmd.resp, sizeof(u32) * 4);
-
-- return MMC_ERR_NONE;
-+ return 0;
- }
-
- int mmc_set_relative_addr(struct mmc_card *card)
-@@ -154,46 +176,52 @@ int mmc_set_relative_addr(struct mmc_car
- cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
-
- err = mmc_wait_for_cmd(card->host, &cmd, MMC_CMD_RETRIES);
-- if (err != MMC_ERR_NONE)
-+ if (err)
- return err;
-
-- return MMC_ERR_NONE;
-+ return 0;
- }
-
--int mmc_send_csd(struct mmc_card *card, u32 *csd)
-+static int
-+mmc_send_cxd_native(struct mmc_host *host, u32 arg, u32 *cxd, int opcode)
- {
- int err;
- struct mmc_command cmd;
-
-- BUG_ON(!card);
-- BUG_ON(!card->host);
-- BUG_ON(!csd);
-+ BUG_ON(!host);
-+ BUG_ON(!cxd);
-
- memset(&cmd, 0, sizeof(struct mmc_command));
-
-- cmd.opcode = MMC_SEND_CSD;
-- cmd.arg = card->rca << 16;
-+ cmd.opcode = opcode;
-+ cmd.arg = arg;
- cmd.flags = MMC_RSP_R2 | MMC_CMD_AC;
-
-- err = mmc_wait_for_cmd(card->host, &cmd, MMC_CMD_RETRIES);
-- if (err != MMC_ERR_NONE)
-+ err = mmc_wait_for_cmd(host, &cmd, MMC_CMD_RETRIES);
-+ if (err)
- return err;
-
-- memcpy(csd, cmd.resp, sizeof(u32) * 4);
-+ memcpy(cxd, cmd.resp, sizeof(u32) * 4);
-
-- return MMC_ERR_NONE;
-+ return 0;
- }
-
--int mmc_send_ext_csd(struct mmc_card *card, u8 *ext_csd)
-+static int
-+mmc_send_cxd_data(struct mmc_card *card, struct mmc_host *host,
-+ u32 opcode, void *buf, unsigned len)
- {
- struct mmc_request mrq;
- struct mmc_command cmd;
- struct mmc_data data;
- struct scatterlist sg;
-+ void *data_buf;
-
-- BUG_ON(!card);
-- BUG_ON(!card->host);
-- BUG_ON(!ext_csd);
-+ /* dma onto stack is unsafe/nonportable, but callers to this
-+ * routine normally provide temporary on-stack buffers ...
-+ */
-+ data_buf = kmalloc(len, GFP_KERNEL);
-+ if (data_buf == NULL)
-+ return -ENOMEM;
-
- memset(&mrq, 0, sizeof(struct mmc_request));
- memset(&cmd, 0, sizeof(struct mmc_command));
-@@ -202,28 +230,117 @@ int mmc_send_ext_csd(struct mmc_card *ca
- mrq.cmd = &cmd;
- mrq.data = &data;
-
-- cmd.opcode = MMC_SEND_EXT_CSD;
-+ cmd.opcode = opcode;
- cmd.arg = 0;
-- cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
-
-- data.blksz = 512;
-+ /* NOTE HACK: the MMC_RSP_SPI_R1 is always correct here, but we
-+ * rely on callers to never use this with "native" calls for reading
-+ * CSD or CID. Native versions of those commands use the R2 type,
-+ * not R1 plus a data block.
-+ */
-+ cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_ADTC;
-+
-+ data.blksz = len;
- data.blocks = 1;
- data.flags = MMC_DATA_READ;
- data.sg = &sg;
- data.sg_len = 1;
-
-- sg_init_one(&sg, ext_csd, 512);
-+ sg_init_one(&sg, data_buf, len);
-+
-+ if (card)
-+ mmc_set_data_timeout(&data, card);
-
-- mmc_set_data_timeout(&data, card, 0);
-+ mmc_wait_for_req(host, &mrq);
-
-- mmc_wait_for_req(card->host, &mrq);
-+ memcpy(buf, data_buf, len);
-+ kfree(data_buf);
-
-- if (cmd.error != MMC_ERR_NONE)
-+ if (cmd.error)
- return cmd.error;
-- if (data.error != MMC_ERR_NONE)
-+ if (data.error)
- return data.error;
-
-- return MMC_ERR_NONE;
-+ return 0;
-+}
-+
-+int mmc_send_csd(struct mmc_card *card, u32 *csd)
-+{
-+ int ret, i;
-+
-+ if (!mmc_host_is_spi(card->host))
-+ return mmc_send_cxd_native(card->host, card->rca << 16,
-+ csd, MMC_SEND_CSD);
-+
-+ ret = mmc_send_cxd_data(card, card->host, MMC_SEND_CSD, csd, 16);
-+ if (ret)
-+ return ret;
-+
-+ for (i = 0;i < 4;i++)
-+ csd[i] = be32_to_cpu(csd[i]);
-+
-+ return 0;
-+}
-+
-+int mmc_send_cid(struct mmc_host *host, u32 *cid)
-+{
-+ int ret, i;
-+
-+ if (!mmc_host_is_spi(host)) {
-+ if (!host->card)
-+ return -EINVAL;
-+ return mmc_send_cxd_native(host, host->card->rca << 16,
-+ cid, MMC_SEND_CID);
-+ }
-+
-+ ret = mmc_send_cxd_data(NULL, host, MMC_SEND_CID, cid, 16);
-+ if (ret)
-+ return ret;
-+
-+ for (i = 0;i < 4;i++)
-+ cid[i] = be32_to_cpu(cid[i]);
-+
-+ return 0;
-+}
-+
-+int mmc_send_ext_csd(struct mmc_card *card, u8 *ext_csd)
-+{
-+ return mmc_send_cxd_data(card, card->host, MMC_SEND_EXT_CSD,
-+ ext_csd, 512);
-+}
-+
-+int mmc_spi_read_ocr(struct mmc_host *host, int highcap, u32 *ocrp)
-+{
-+ struct mmc_command cmd;
-+ int err;
-+
-+ memset(&cmd, 0, sizeof(struct mmc_command));
-+
-+ cmd.opcode = MMC_SPI_READ_OCR;
-+ cmd.arg = highcap ? (1 << 30) : 0;
-+ cmd.flags = MMC_RSP_SPI_R3;
-+
-+ err = mmc_wait_for_cmd(host, &cmd, 0);
-+
-+ *ocrp = cmd.resp[1];
-+ return err;
-+}
-+
-+int mmc_spi_set_crc(struct mmc_host *host, int use_crc)
-+{
-+ struct mmc_command cmd;
-+ int err;
-+
-+ memset(&cmd, 0, sizeof(struct mmc_command));
-+
-+ cmd.opcode = MMC_SPI_CRC_ON_OFF;
-+ cmd.flags = MMC_RSP_SPI_R1;
-+ cmd.arg = use_crc;
-+
-+ err = mmc_wait_for_cmd(host, &cmd, 0);
-+ if (!err)
-+ host->use_spi_crc = use_crc;
-+ return err;
- }
-
- int mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value)
-@@ -241,13 +358,13 @@ int mmc_switch(struct mmc_card *card, u8
- (index << 16) |
- (value << 8) |
- set;
-- cmd.flags = MMC_RSP_R1B | MMC_CMD_AC;
-+ cmd.flags = MMC_RSP_SPI_R1B | MMC_RSP_R1B | MMC_CMD_AC;
-
- err = mmc_wait_for_cmd(card->host, &cmd, MMC_CMD_RETRIES);
-- if (err != MMC_ERR_NONE)
-+ if (err)
- return err;
-
-- return MMC_ERR_NONE;
-+ return 0;
- }
-
- int mmc_send_status(struct mmc_card *card, u32 *status)
-@@ -261,16 +378,20 @@ int mmc_send_status(struct mmc_card *car
- memset(&cmd, 0, sizeof(struct mmc_command));
-
- cmd.opcode = MMC_SEND_STATUS;
-- cmd.arg = card->rca << 16;
-- cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
-+ if (!mmc_host_is_spi(card->host))
-+ cmd.arg = card->rca << 16;
-+ cmd.flags = MMC_RSP_SPI_R2 | MMC_RSP_R1 | MMC_CMD_AC;
-
- err = mmc_wait_for_cmd(card->host, &cmd, MMC_CMD_RETRIES);
-- if (err != MMC_ERR_NONE)
-+ if (err)
- return err;
-
-+ /* NOTE: callers are required to understand the difference
-+ * between "native" and SPI format status words!
-+ */
- if (status)
- *status = cmd.resp[0];
-
-- return MMC_ERR_NONE;
-+ return 0;
- }
-
---- a/drivers/mmc/core/mmc_ops.h
-+++ b/drivers/mmc/core/mmc_ops.h
-@@ -22,6 +22,9 @@ int mmc_send_csd(struct mmc_card *card,
- int mmc_send_ext_csd(struct mmc_card *card, u8 *ext_csd);
- int mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value);
- int mmc_send_status(struct mmc_card *card, u32 *status);
-+int mmc_send_cid(struct mmc_host *host, u32 *cid);
-+int mmc_spi_read_ocr(struct mmc_host *host, int highcap, u32 *ocrp);
-+int mmc_spi_set_crc(struct mmc_host *host, int use_crc);
-
- #endif
-
---- a/drivers/mmc/core/sd.c
-+++ b/drivers/mmc/core/sd.c
-@@ -166,8 +166,6 @@ static int mmc_decode_scr(struct mmc_car
- unsigned int scr_struct;
- u32 resp[4];
-
-- BUG_ON(!mmc_card_sd(card));
--
- resp[3] = card->raw_scr[1];
- resp[2] = card->raw_scr[0];
-
-@@ -193,30 +191,38 @@ static int mmc_read_switch(struct mmc_ca
- u8 *status;
-
- if (card->scr.sda_vsn < SCR_SPEC_VER_1)
-- return MMC_ERR_NONE;
-+ return 0;
-
- if (!(card->csd.cmdclass & CCC_SWITCH)) {
- printk(KERN_WARNING "%s: card lacks mandatory switch "
- "function, performance might suffer.\n",
- mmc_hostname(card->host));
-- return MMC_ERR_NONE;
-+ return 0;
- }
-
-- err = MMC_ERR_FAILED;
-+ err = -EIO;
-
- status = kmalloc(64, GFP_KERNEL);
- if (!status) {
- printk(KERN_ERR "%s: could not allocate a buffer for "
- "switch capabilities.\n", mmc_hostname(card->host));
-- return err;
-+ return -ENOMEM;
- }
-
- err = mmc_sd_switch(card, 0, 0, 1, status);
-- if (err != MMC_ERR_NONE) {
-+ if (err) {
-+ /*
-+ * We all hosts that cannot perform the command
-+ * to fail more gracefully
-+ */
-+ if (err != -EINVAL)
-+ goto out;
-+
- printk(KERN_WARNING "%s: problem reading switch "
- "capabilities, performance might suffer.\n",
- mmc_hostname(card->host));
-- err = MMC_ERR_NONE;
-+ err = 0;
-+
- goto out;
- }
-
-@@ -238,28 +244,28 @@ static int mmc_switch_hs(struct mmc_card
- u8 *status;
-
- if (card->scr.sda_vsn < SCR_SPEC_VER_1)
-- return MMC_ERR_NONE;
-+ return 0;
-
- if (!(card->csd.cmdclass & CCC_SWITCH))
-- return MMC_ERR_NONE;
-+ return 0;
-
- if (!(card->host->caps & MMC_CAP_SD_HIGHSPEED))
-- return MMC_ERR_NONE;
-+ return 0;
-
- if (card->sw_caps.hs_max_dtr == 0)
-- return MMC_ERR_NONE;
-+ return 0;
-
-- err = MMC_ERR_FAILED;
-+ err = -EIO;
-
- status = kmalloc(64, GFP_KERNEL);
- if (!status) {
- printk(KERN_ERR "%s: could not allocate a buffer for "
- "switch capabilities.\n", mmc_hostname(card->host));
-- return err;
-+ return -ENOMEM;
- }
-
- err = mmc_sd_switch(card, 1, 0, 1, status);
-- if (err != MMC_ERR_NONE)
-+ if (err)
- goto out;
-
- if ((status[16] & 0xF) != 1) {
-@@ -292,7 +298,7 @@ static int mmc_sd_init_card(struct mmc_h
- unsigned int max_dtr;
-
- BUG_ON(!host);
-- BUG_ON(!host->claimed);
-+ WARN_ON(!host->claimed);
-
- /*
- * Since we're changing the OCR value, we seem to
-@@ -309,23 +315,37 @@ static int mmc_sd_init_card(struct mmc_h
- * block-addressed SDHC cards.
- */
- err = mmc_send_if_cond(host, ocr);
-- if (err == MMC_ERR_NONE)
-+ if (!err)
- ocr |= 1 << 30;
-
- err = mmc_send_app_op_cond(host, ocr, NULL);
-- if (err != MMC_ERR_NONE)
-+ if (err)
- goto err;
-
- /*
-+ * For SPI, enable CRC as appropriate.
-+ */
-+ if (mmc_host_is_spi(host)) {
-+ err = mmc_spi_set_crc(host, use_spi_crc);
-+ if (err)
-+ goto err;
-+ }
-+
-+ /*
- * Fetch CID from card.
- */
-- err = mmc_all_send_cid(host, cid);
-- if (err != MMC_ERR_NONE)
-+ if (mmc_host_is_spi(host))
-+ err = mmc_send_cid(host, cid);
-+ else
-+ err = mmc_all_send_cid(host, cid);
-+ if (err)
- goto err;
-
- if (oldcard) {
-- if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0)
-+ if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) {
-+ err = -ENOENT;
- goto err;
-+ }
-
- card = oldcard;
- } else {
-@@ -333,32 +353,36 @@ static int mmc_sd_init_card(struct mmc_h
- * Allocate card structure.
- */
- card = mmc_alloc_card(host);
-- if (IS_ERR(card))
-+ if (IS_ERR(card)) {
-+ err = PTR_ERR(card);
- goto err;
-+ }
-
- card->type = MMC_TYPE_SD;
- memcpy(card->raw_cid, cid, sizeof(card->raw_cid));
- }
-
- /*
-- * Set card RCA.
-+ * For native busses: get card RCA and quit open drain mode.
- */
-- err = mmc_send_relative_addr(host, &card->rca);
-- if (err != MMC_ERR_NONE)
-- goto free_card;
-+ if (!mmc_host_is_spi(host)) {
-+ err = mmc_send_relative_addr(host, &card->rca);
-+ if (err)
-+ goto free_card;
-
-- mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL);
-+ mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL);
-+ }
-
- if (!oldcard) {
- /*
- * Fetch CSD from card.
- */
- err = mmc_send_csd(card, card->raw_csd);
-- if (err != MMC_ERR_NONE)
-+ if (err)
- goto free_card;
-
- err = mmc_decode_csd(card);
-- if (err < 0)
-+ if (err)
- goto free_card;
-
- mmc_decode_cid(card);
-@@ -367,16 +391,18 @@ static int mmc_sd_init_card(struct mmc_h
- /*
- * Select card, as all following commands rely on that.
- */
-- err = mmc_select_card(card);
-- if (err != MMC_ERR_NONE)
-- goto free_card;
-+ if (!mmc_host_is_spi(host)) {
-+ err = mmc_select_card(card);
-+ if (err)
-+ goto free_card;
-+ }
-
- if (!oldcard) {
- /*
- * Fetch SCR from card.
- */
- err = mmc_app_send_scr(card, card->raw_scr);
-- if (err != MMC_ERR_NONE)
-+ if (err)
- goto free_card;
-
- err = mmc_decode_scr(card);
-@@ -387,7 +413,7 @@ static int mmc_sd_init_card(struct mmc_h
- * Fetch switch information from card.
- */
- err = mmc_read_switch(card);
-- if (err != MMC_ERR_NONE)
-+ if (err)
- goto free_card;
- }
-
-@@ -395,7 +421,7 @@ static int mmc_sd_init_card(struct mmc_h
- * Attempt to change to high-speed (if supported)
- */
- err = mmc_switch_hs(card);
-- if (err != MMC_ERR_NONE)
-+ if (err)
- goto free_card;
-
- /*
-@@ -418,7 +444,7 @@ static int mmc_sd_init_card(struct mmc_h
- if ((host->caps & MMC_CAP_4_BIT_DATA) &&
- (card->scr.bus_widths & SD_SCR_BUS_WIDTH_4)) {
- err = mmc_app_set_bus_width(card, MMC_BUS_WIDTH_4);
-- if (err != MMC_ERR_NONE)
-+ if (err)
- goto free_card;
-
- mmc_set_bus_width(host, MMC_BUS_WIDTH_4);
-@@ -442,14 +468,14 @@ static int mmc_sd_init_card(struct mmc_h
- if (!oldcard)
- host->card = card;
-
-- return MMC_ERR_NONE;
-+ return 0;
-
- free_card:
- if (!oldcard)
- mmc_remove_card(card);
- err:
-
-- return MMC_ERR_FAILED;
-+ return err;
- }
-
- /*
-@@ -483,7 +509,7 @@ static void mmc_sd_detect(struct mmc_hos
-
- mmc_release_host(host);
-
-- if (err != MMC_ERR_NONE) {
-+ if (err) {
- mmc_sd_remove(host);
-
- mmc_claim_host(host);
-@@ -552,7 +578,8 @@ static void mmc_sd_suspend(struct mmc_ho
- BUG_ON(!host->card);
-
- mmc_claim_host(host);
-- mmc_deselect_cards(host);
-+ if (!mmc_host_is_spi(host))
-+ mmc_deselect_cards(host);
- host->card->state &= ~MMC_STATE_HIGHSPEED;
- mmc_release_host(host);
- }
-@@ -574,7 +601,7 @@ static void mmc_sd_resume(struct mmc_hos
- err = mmc_sd_init_card(host, host->ocr, host->card);
- mmc_release_host(host);
-
-- if (err != MMC_ERR_NONE) {
-+ if (err) {
- mmc_sd_remove(host);
-
- mmc_claim_host(host);
-@@ -608,11 +635,22 @@ int mmc_attach_sd(struct mmc_host *host,
- int err;
-
- BUG_ON(!host);
-- BUG_ON(!host->claimed);
-+ WARN_ON(!host->claimed);
-
- mmc_attach_bus(host, &mmc_sd_ops);
-
- /*
-+ * We need to get OCR a different way for SPI.
-+ */
-+ if (mmc_host_is_spi(host)) {
-+ mmc_go_idle(host);
-+
-+ err = mmc_spi_read_ocr(host, 0, &ocr);
-+ if (err)
-+ goto err;
-+ }
-+
-+ /*
- * Sanity check the voltages that the card claims to
- * support.
- */
-@@ -644,7 +682,7 @@ int mmc_attach_sd(struct mmc_host *host,
- * Detect and init the card.
- */
- err = mmc_sd_init_card(host, host->ocr, NULL);
-- if (err != MMC_ERR_NONE)
-+ if (err)
- goto err;
-
- mmc_release_host(host);
-@@ -666,6 +704,6 @@ err:
- printk(KERN_ERR "%s: error %d whilst initialising SD card\n",
- mmc_hostname(host), err);
-
-- return 0;
-+ return err;
- }
-
---- a/drivers/mmc/core/sd_ops.c
-+++ b/drivers/mmc/core/sd_ops.c
-@@ -10,7 +10,6 @@
- */
-
- #include <linux/types.h>
--#include <asm/scatterlist.h>
- #include <linux/scatterlist.h>
-
- #include <linux/mmc/host.h>
-@@ -33,21 +32,21 @@ static int mmc_app_cmd(struct mmc_host *
-
- if (card) {
- cmd.arg = card->rca << 16;
-- cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
-+ cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_AC;
- } else {
- cmd.arg = 0;
-- cmd.flags = MMC_RSP_R1 | MMC_CMD_BCR;
-+ cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_BCR;
- }
-
- err = mmc_wait_for_cmd(host, &cmd, 0);
-- if (err != MMC_ERR_NONE)
-+ if (err)
- return err;
-
- /* Check that card supported application commands */
-- if (!(cmd.resp[0] & R1_APP_CMD))
-- return MMC_ERR_FAILED;
-+ if (!mmc_host_is_spi(host) && !(cmd.resp[0] & R1_APP_CMD))
-+ return -EOPNOTSUPP;
-
-- return MMC_ERR_NONE;
-+ return 0;
- }
-
- /**
-@@ -73,7 +72,7 @@ int mmc_wait_for_app_cmd(struct mmc_host
- BUG_ON(!cmd);
- BUG_ON(retries < 0);
-
-- err = MMC_ERR_INVALID;
-+ err = -EIO;
-
- /*
- * We have to resend MMC_APP_CMD for each attempt so
-@@ -83,8 +82,14 @@ int mmc_wait_for_app_cmd(struct mmc_host
- memset(&mrq, 0, sizeof(struct mmc_request));
-
- err = mmc_app_cmd(host, card);
-- if (err != MMC_ERR_NONE)
-+ if (err) {
-+ /* no point in retrying; no APP commands allowed */
-+ if (mmc_host_is_spi(host)) {
-+ if (cmd->resp[0] & R1_SPI_ILLEGAL_COMMAND)
-+ break;
-+ }
- continue;
-+ }
-
- memset(&mrq, 0, sizeof(struct mmc_request));
-
-@@ -97,8 +102,14 @@ int mmc_wait_for_app_cmd(struct mmc_host
- mmc_wait_for_req(host, &mrq);
-
- err = cmd->error;
-- if (cmd->error == MMC_ERR_NONE)
-+ if (!cmd->error)
- break;
-+
-+ /* no point in retrying illegal APP commands */
-+ if (mmc_host_is_spi(host)) {
-+ if (cmd->resp[0] & R1_SPI_ILLEGAL_COMMAND)
-+ break;
-+ }
- }
-
- return err;
-@@ -127,14 +138,14 @@ int mmc_app_set_bus_width(struct mmc_car
- cmd.arg = SD_BUS_WIDTH_4;
- break;
- default:
-- return MMC_ERR_INVALID;
-+ return -EINVAL;
- }
-
- err = mmc_wait_for_app_cmd(card->host, card, &cmd, MMC_CMD_RETRIES);
-- if (err != MMC_ERR_NONE)
-+ if (err)
- return err;
-
-- return MMC_ERR_NONE;
-+ return 0;
- }
-
- int mmc_send_app_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr)
-@@ -147,23 +158,36 @@ int mmc_send_app_op_cond(struct mmc_host
- memset(&cmd, 0, sizeof(struct mmc_command));
-
- cmd.opcode = SD_APP_OP_COND;
-- cmd.arg = ocr;
-- cmd.flags = MMC_RSP_R3 | MMC_CMD_BCR;
-+ if (mmc_host_is_spi(host))
-+ cmd.arg = ocr & (1 << 30); /* SPI only defines one bit */
-+ else
-+ cmd.arg = ocr;
-+ cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R3 | MMC_CMD_BCR;
-
- for (i = 100; i; i--) {
- err = mmc_wait_for_app_cmd(host, NULL, &cmd, MMC_CMD_RETRIES);
-- if (err != MMC_ERR_NONE)
-+ if (err)
- break;
-
-- if (cmd.resp[0] & MMC_CARD_BUSY || ocr == 0)
-+ /* if we're just probing, do a single pass */
-+ if (ocr == 0)
- break;
-
-- err = MMC_ERR_TIMEOUT;
-+ /* otherwise wait until reset completes */
-+ if (mmc_host_is_spi(host)) {
-+ if (!(cmd.resp[0] & R1_SPI_IDLE))
-+ break;
-+ } else {
-+ if (cmd.resp[0] & MMC_CARD_BUSY)
-+ break;
-+ }
-+
-+ err = -ETIMEDOUT;
-
- mmc_delay(10);
- }
-
-- if (rocr)
-+ if (rocr && !mmc_host_is_spi(host))
- *rocr = cmd.resp[0];
-
- return err;
-@@ -174,6 +198,7 @@ int mmc_send_if_cond(struct mmc_host *ho
- struct mmc_command cmd;
- int err;
- static const u8 test_pattern = 0xAA;
-+ u8 result_pattern;
-
- /*
- * To support SD 2.0 cards, we must always invoke SD_SEND_IF_COND
-@@ -182,16 +207,21 @@ int mmc_send_if_cond(struct mmc_host *ho
- */
- cmd.opcode = SD_SEND_IF_COND;
- cmd.arg = ((ocr & 0xFF8000) != 0) << 8 | test_pattern;
-- cmd.flags = MMC_RSP_R7 | MMC_CMD_BCR;
-+ cmd.flags = MMC_RSP_SPI_R7 | MMC_RSP_R7 | MMC_CMD_BCR;
-
- err = mmc_wait_for_cmd(host, &cmd, 0);
-- if (err != MMC_ERR_NONE)
-+ if (err)
- return err;
-
-- if ((cmd.resp[0] & 0xFF) != test_pattern)
-- return MMC_ERR_FAILED;
-+ if (mmc_host_is_spi(host))
-+ result_pattern = cmd.resp[1] & 0xFF;
-+ else
-+ result_pattern = cmd.resp[0] & 0xFF;
-+
-+ if (result_pattern != test_pattern)
-+ return -EIO;
-
-- return MMC_ERR_NONE;
-+ return 0;
- }
-
- int mmc_send_relative_addr(struct mmc_host *host, unsigned int *rca)
-@@ -209,12 +239,12 @@ int mmc_send_relative_addr(struct mmc_ho
- cmd.flags = MMC_RSP_R6 | MMC_CMD_BCR;
-
- err = mmc_wait_for_cmd(host, &cmd, MMC_CMD_RETRIES);
-- if (err != MMC_ERR_NONE)
-+ if (err)
- return err;
-
- *rca = cmd.resp[0] >> 16;
-
-- return MMC_ERR_NONE;
-+ return 0;
- }
-
- int mmc_app_send_scr(struct mmc_card *card, u32 *scr)
-@@ -229,8 +259,10 @@ int mmc_app_send_scr(struct mmc_card *ca
- BUG_ON(!card->host);
- BUG_ON(!scr);
-
-+ /* NOTE: caller guarantees scr is heap-allocated */
-+
- err = mmc_app_cmd(card->host, card);
-- if (err != MMC_ERR_NONE)
-+ if (err)
- return err;
-
- memset(&mrq, 0, sizeof(struct mmc_request));
-@@ -242,7 +274,7 @@ int mmc_app_send_scr(struct mmc_card *ca
-
- cmd.opcode = SD_APP_SEND_SCR;
- cmd.arg = 0;
-- cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
-+ cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_ADTC;
-
- data.blksz = 8;
- data.blocks = 1;
-@@ -252,19 +284,19 @@ int mmc_app_send_scr(struct mmc_card *ca
-
- sg_init_one(&sg, scr, 8);
-
-- mmc_set_data_timeout(&data, card, 0);
-+ mmc_set_data_timeout(&data, card);
-
- mmc_wait_for_req(card->host, &mrq);
-
-- if (cmd.error != MMC_ERR_NONE)
-+ if (cmd.error)
- return cmd.error;
-- if (data.error != MMC_ERR_NONE)
-+ if (data.error)
- return data.error;
-
-- scr[0] = ntohl(scr[0]);
-- scr[1] = ntohl(scr[1]);
-+ scr[0] = be32_to_cpu(scr[0]);
-+ scr[1] = be32_to_cpu(scr[1]);
-
-- return MMC_ERR_NONE;
-+ return 0;
- }
-
- int mmc_sd_switch(struct mmc_card *card, int mode, int group,
-@@ -278,6 +310,8 @@ int mmc_sd_switch(struct mmc_card *card,
- BUG_ON(!card);
- BUG_ON(!card->host);
-
-+ /* NOTE: caller guarantees resp is heap-allocated */
-+
- mode = !!mode;
- value &= 0xF;
-
-@@ -292,7 +326,7 @@ int mmc_sd_switch(struct mmc_card *card,
- cmd.arg = mode << 31 | 0x00FFFFFF;
- cmd.arg &= ~(0xF << (group * 4));
- cmd.arg |= value << (group * 4);
-- cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
-+ cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_ADTC;
-
- data.blksz = 64;
- data.blocks = 1;
-@@ -302,15 +336,15 @@ int mmc_sd_switch(struct mmc_card *card,
-
- sg_init_one(&sg, resp, 64);
-
-- mmc_set_data_timeout(&data, card, 0);
-+ mmc_set_data_timeout(&data, card);
-
- mmc_wait_for_req(card->host, &mrq);
-
-- if (cmd.error != MMC_ERR_NONE)
-+ if (cmd.error)
- return cmd.error;
-- if (data.error != MMC_ERR_NONE)
-+ if (data.error)
- return data.error;
-
-- return MMC_ERR_NONE;
-+ return 0;
- }
-
---- /dev/null
-+++ b/drivers/mmc/core/sdio.c
-@@ -0,0 +1,395 @@
-+/*
-+ * linux/drivers/mmc/sdio.c
-+ *
-+ * Copyright 2006-2007 Pierre Ossman
-+ *
-+ * This program is free software; you can redistribute it and/or modify
-+ * it under the terms of the GNU General Public License as published by
-+ * the Free Software Foundation; either version 2 of the License, or (at
-+ * your option) any later version.
-+ */
-+
-+#include <linux/err.h>
-+
-+#include <linux/mmc/host.h>
-+#include <linux/mmc/card.h>
-+#include <linux/mmc/sdio.h>
-+#include <linux/mmc/sdio_func.h>
-+
-+#include "core.h"
-+#include "bus.h"
-+#include "sdio_bus.h"
-+#include "mmc_ops.h"
-+#include "sd_ops.h"
-+#include "sdio_ops.h"
-+#include "sdio_cis.h"
-+
-+static int sdio_read_fbr(struct sdio_func *func)
-+{
-+ int ret;
-+ unsigned char data;
-+
-+ ret = mmc_io_rw_direct(func->card, 0, 0,
-+ SDIO_FBR_BASE(func->num) + SDIO_FBR_STD_IF, 0, &data);
-+ if (ret)
-+ goto out;
-+
-+ data &= 0x0f;
-+
-+ if (data == 0x0f) {
-+ ret = mmc_io_rw_direct(func->card, 0, 0,
-+ SDIO_FBR_BASE(func->num) + SDIO_FBR_STD_IF_EXT, 0, &data);
-+ if (ret)
-+ goto out;
-+ }
-+
-+ func->class = data;
-+
-+out:
-+ return ret;
-+}
-+
-+static int sdio_init_func(struct mmc_card *card, unsigned int fn)
-+{
-+ int ret;
-+ struct sdio_func *func;
-+
-+ BUG_ON(fn > SDIO_MAX_FUNCS);
-+
-+ func = sdio_alloc_func(card);
-+ if (IS_ERR(func))
-+ return PTR_ERR(func);
-+
-+ func->num = fn;
-+
-+ ret = sdio_read_fbr(func);
-+ if (ret)
-+ goto fail;
-+
-+ ret = sdio_read_func_cis(func);
-+ if (ret)
-+ goto fail;
-+
-+ card->sdio_func[fn - 1] = func;
-+
-+ return 0;
-+
-+fail:
-+ /*
-+ * It is okay to remove the function here even though we hold
-+ * the host lock as we haven't registered the device yet.
-+ */
-+ sdio_remove_func(func);
-+ return ret;
-+}
-+
-+static int sdio_read_cccr(struct mmc_card *card)
-+{
-+ int ret;
-+ int cccr_vsn;
-+ unsigned char data;
-+
-+ memset(&card->cccr, 0, sizeof(struct sdio_cccr));
-+
-+ ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_CCCR, 0, &data);
-+ if (ret)
-+ goto out;
-+
-+ cccr_vsn = data & 0x0f;
-+
-+ if (cccr_vsn > SDIO_CCCR_REV_1_20) {
-+ printk(KERN_ERR "%s: unrecognised CCCR structure version %d\n",
-+ mmc_hostname(card->host), cccr_vsn);
-+ return -EINVAL;
-+ }
-+
-+ card->cccr.sdio_vsn = (data & 0xf0) >> 4;
-+
-+ ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_CAPS, 0, &data);
-+ if (ret)
-+ goto out;
-+
-+ if (data & SDIO_CCCR_CAP_SMB)
-+ card->cccr.multi_block = 1;
-+ if (data & SDIO_CCCR_CAP_LSC)
-+ card->cccr.low_speed = 1;
-+ if (data & SDIO_CCCR_CAP_4BLS)
-+ card->cccr.wide_bus = 1;
-+
-+ if (cccr_vsn >= SDIO_CCCR_REV_1_10) {
-+ ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_POWER, 0, &data);
-+ if (ret)
-+ goto out;
-+
-+ if (data & SDIO_POWER_SMPC)
-+ card->cccr.high_power = 1;
-+ }
-+
-+ if (cccr_vsn >= SDIO_CCCR_REV_1_20) {
-+ ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_SPEED, 0, &data);
-+ if (ret)
-+ goto out;
-+
-+ if (data & SDIO_SPEED_SHS)
-+ card->cccr.high_speed = 1;
-+ }
-+
-+out:
-+ return ret;
-+}
-+
-+static int sdio_enable_wide(struct mmc_card *card)
-+{
-+ int ret;
-+ u8 ctrl;
-+
-+ if (!(card->host->caps & MMC_CAP_4_BIT_DATA))
-+ return 0;
-+
-+ if (card->cccr.low_speed && !card->cccr.wide_bus)
-+ return 0;
-+
-+ ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_IF, 0, &ctrl);
-+ if (ret)
-+ return ret;
-+
-+ ctrl |= SDIO_BUS_WIDTH_4BIT;
-+
-+ ret = mmc_io_rw_direct(card, 1, 0, SDIO_CCCR_IF, ctrl, NULL);
-+ if (ret)
-+ return ret;
-+
-+ mmc_set_bus_width(card->host, MMC_BUS_WIDTH_4);
-+
-+ return 0;
-+}
-+
-+/*
-+ * Host is being removed. Free up the current card.
-+ */
-+static void mmc_sdio_remove(struct mmc_host *host)
-+{
-+ int i;
-+
-+ BUG_ON(!host);
-+ BUG_ON(!host->card);
-+
-+ for (i = 0;i < host->card->sdio_funcs;i++) {
-+ if (host->card->sdio_func[i]) {
-+ sdio_remove_func(host->card->sdio_func[i]);
-+ host->card->sdio_func[i] = NULL;
-+ }
-+ }
-+
-+ mmc_remove_card(host->card);
-+ host->card = NULL;
-+}
-+
-+/*
-+ * Card detection callback from host.
-+ */
-+static void mmc_sdio_detect(struct mmc_host *host)
-+{
-+ int err;
-+
-+ BUG_ON(!host);
-+ BUG_ON(!host->card);
-+
-+ mmc_claim_host(host);
-+
-+ /*
-+ * Just check if our card has been removed.
-+ */
-+ err = mmc_select_card(host->card);
-+
-+ mmc_release_host(host);
-+
-+ if (err) {
-+ mmc_sdio_remove(host);
-+
-+ mmc_claim_host(host);
-+ mmc_detach_bus(host);
-+ mmc_release_host(host);
-+ }
-+}
-+
-+
-+static const struct mmc_bus_ops mmc_sdio_ops = {
-+ .remove = mmc_sdio_remove,
-+ .detect = mmc_sdio_detect,
-+};
-+
-+
-+/*
-+ * Starting point for SDIO card init.
-+ */
-+int mmc_attach_sdio(struct mmc_host *host, u32 ocr)
-+{
-+ int err;
-+ int i, funcs;
-+ struct mmc_card *card;
-+
-+ BUG_ON(!host);
-+ WARN_ON(!host->claimed);
-+
-+ mmc_attach_bus(host, &mmc_sdio_ops);
-+
-+ /*
-+ * Sanity check the voltages that the card claims to
-+ * support.
-+ */
-+ if (ocr & 0x7F) {
-+ printk(KERN_WARNING "%s: card claims to support voltages "
-+ "below the defined range. These will be ignored.\n",
-+ mmc_hostname(host));
-+ ocr &= ~0x7F;
-+ }
-+
-+ if (ocr & MMC_VDD_165_195) {
-+ printk(KERN_WARNING "%s: SDIO card claims to support the "
-+ "incompletely defined 'low voltage range'. This "
-+ "will be ignored.\n", mmc_hostname(host));
-+ ocr &= ~MMC_VDD_165_195;
-+ }
-+
-+ host->ocr = mmc_select_voltage(host, ocr);
-+
-+ /*
-+ * Can we support the voltage(s) of the card(s)?
-+ */
-+ if (!host->ocr) {
-+ err = -EINVAL;
-+ goto err;
-+ }
-+
-+ /*
-+ * Inform the card of the voltage
-+ */
-+ err = mmc_send_io_op_cond(host, host->ocr, &ocr);
-+ if (err)
-+ goto err;
-+
-+ /*
-+ * For SPI, enable CRC as appropriate.
-+ */
-+ if (mmc_host_is_spi(host)) {
-+ err = mmc_spi_set_crc(host, use_spi_crc);
-+ if (err)
-+ goto err;
-+ }
-+
-+ /*
-+ * The number of functions on the card is encoded inside
-+ * the ocr.
-+ */
-+ funcs = (ocr & 0x70000000) >> 28;
-+
-+ /*
-+ * Allocate card structure.
-+ */
-+ card = mmc_alloc_card(host);
-+ if (IS_ERR(card)) {
-+ err = PTR_ERR(card);
-+ goto err;
-+ }
-+
-+ card->type = MMC_TYPE_SDIO;
-+ card->sdio_funcs = funcs;
-+
-+ host->card = card;
-+
-+ /*
-+ * For native busses: set card RCA and quit open drain mode.
-+ */
-+ if (!mmc_host_is_spi(host)) {
-+ err = mmc_send_relative_addr(host, &card->rca);
-+ if (err)
-+ goto remove;
-+
-+ mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL);
-+ }
-+
-+ /*
-+ * Select card, as all following commands rely on that.
-+ */
-+ if (!mmc_host_is_spi(host)) {
-+ err = mmc_select_card(card);
-+ if (err)
-+ goto remove;
-+ }
-+
-+ /*
-+ * Read the common registers.
-+ */
-+ err = sdio_read_cccr(card);
-+ if (err)
-+ goto remove;
-+
-+ /*
-+ * Read the common CIS tuples.
-+ */
-+ err = sdio_read_common_cis(card);
-+ if (err)
-+ goto remove;
-+
-+ /*
-+ * No support for high-speed yet, so just set
-+ * the card's maximum speed.
-+ */
-+ mmc_set_clock(host, card->cis.max_dtr);
-+
-+ /*
-+ * Switch to wider bus (if supported).
-+ */
-+ err = sdio_enable_wide(card);
-+ if (err)
-+ goto remove;
-+
-+ /*
-+ * Initialize (but don't add) all present functions.
-+ */
-+ for (i = 0;i < funcs;i++) {
-+ err = sdio_init_func(host->card, i + 1);
-+ if (err)
-+ goto remove;
-+ }
-+
-+ mmc_release_host(host);
-+
-+ /*
-+ * First add the card to the driver model...
-+ */
-+ err = mmc_add_card(host->card);
-+ if (err)
-+ goto remove_added;
-+
-+ /*
-+ * ...then the SDIO functions.
-+ */
-+ for (i = 0;i < funcs;i++) {
-+ err = sdio_add_func(host->card->sdio_func[i]);
-+ if (err)
-+ goto remove_added;
-+ }
-+
-+ return 0;
-+
-+
-+remove_added:
-+ /* Remove without lock if the device has been added. */
-+ mmc_sdio_remove(host);
-+ mmc_claim_host(host);
-+remove:
-+ /* And with lock if it hasn't been added. */
-+ if (host->card)
-+ mmc_sdio_remove(host);
-+err:
-+ mmc_detach_bus(host);
-+ mmc_release_host(host);
-+
-+ printk(KERN_ERR "%s: error %d whilst initialising SDIO card\n",
-+ mmc_hostname(host), err);
-+
-+ return err;
-+}
-+
---- /dev/null
-+++ b/drivers/mmc/core/sdio_bus.c
-@@ -0,0 +1,265 @@
-+/*
-+ * linux/drivers/mmc/core/sdio_bus.c
-+ *
-+ * Copyright 2007 Pierre Ossman
-+ *
-+ * This program is free software; you can redistribute it and/or modify
-+ * it under the terms of the GNU General Public License as published by
-+ * the Free Software Foundation; either version 2 of the License, or (at
-+ * your option) any later version.
-+ *
-+ * SDIO function driver model
-+ */
-+
-+#include <linux/device.h>
-+#include <linux/err.h>
-+
-+#include <linux/mmc/card.h>
-+#include <linux/mmc/sdio_func.h>
-+
-+#include "sdio_cis.h"
-+#include "sdio_bus.h"
-+
-+#define dev_to_sdio_func(d) container_of(d, struct sdio_func, dev)
-+#define to_sdio_driver(d) container_of(d, struct sdio_driver, drv)
-+
-+/* show configuration fields */
-+#define sdio_config_attr(field, format_string) \
-+static ssize_t \
-+field##_show(struct device *dev, struct device_attribute *attr, char *buf) \
-+{ \
-+ struct sdio_func *func; \
-+ \
-+ func = dev_to_sdio_func (dev); \
-+ return sprintf (buf, format_string, func->field); \
-+}
-+
-+sdio_config_attr(class, "0x%02x\n");
-+sdio_config_attr(vendor, "0x%04x\n");
-+sdio_config_attr(device, "0x%04x\n");
-+
-+static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf)
-+{
-+ struct sdio_func *func = dev_to_sdio_func (dev);
-+
-+ return sprintf(buf, "sdio:c%02Xv%04Xd%04X\n",
-+ func->class, func->vendor, func->device);
-+}
-+
-+static struct device_attribute sdio_dev_attrs[] = {
-+ __ATTR_RO(class),
-+ __ATTR_RO(vendor),
-+ __ATTR_RO(device),
-+ __ATTR_RO(modalias),
-+ __ATTR_NULL,
-+};
-+
-+static const struct sdio_device_id *sdio_match_one(struct sdio_func *func,
-+ const struct sdio_device_id *id)
-+{
-+ if (id->class != (__u8)SDIO_ANY_ID && id->class != func->class)
-+ return NULL;
-+ if (id->vendor != (__u16)SDIO_ANY_ID && id->vendor != func->vendor)
-+ return NULL;
-+ if (id->device != (__u16)SDIO_ANY_ID && id->device != func->device)
-+ return NULL;
-+ return id;
-+}
-+
-+static const struct sdio_device_id *sdio_match_device(struct sdio_func *func,
-+ struct sdio_driver *sdrv)
-+{
-+ const struct sdio_device_id *ids;
-+
-+ ids = sdrv->id_table;
-+
-+ if (ids) {
-+ while (ids->class || ids->vendor || ids->device) {
-+ if (sdio_match_one(func, ids))
-+ return ids;
-+ ids++;
-+ }
-+ }
-+
-+ return NULL;
-+}
-+
-+static int sdio_bus_match(struct device *dev, struct device_driver *drv)
-+{
-+ struct sdio_func *func = dev_to_sdio_func(dev);
-+ struct sdio_driver *sdrv = to_sdio_driver(drv);
-+
-+ if (sdio_match_device(func, sdrv))
-+ return 1;
-+
-+ return 0;
-+}
-+
-+static int
-+sdio_bus_uevent(struct device *dev, char **envp,
-+ int num_envp, char *buffer, int buffer_size)
-+{
-+ struct sdio_func *func = dev_to_sdio_func(dev);
-+ int i = 0, len = 0;
-+
-+ if (add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &len,
-+ "SDIO_CLASS=%02X", func->class))
-+ return -ENOMEM;
-+
-+ if (add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &len,
-+ "SDIO_ID=%04X:%04X", func->vendor, func->device))
-+ return -ENOMEM;
-+
-+ if (add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &len,
-+ "MODALIAS=sdio:c%02Xv%04Xd%04X",
-+ func->class, func->vendor, func->device))
-+ return -ENOMEM;
-+
-+ return 0;
-+}
-+
-+static int sdio_bus_probe(struct device *dev)
-+{
-+ struct sdio_driver *drv = to_sdio_driver(dev->driver);
-+ struct sdio_func *func = dev_to_sdio_func(dev);
-+ const struct sdio_device_id *id;
-+ int ret;
-+
-+ id = sdio_match_device(func, drv);
-+ if (!id)
-+ return -ENODEV;
-+
-+ /* Set the default block size so the driver is sure it's something
-+ * sensible. */
-+ sdio_claim_host(func);
-+ ret = sdio_set_block_size(func, 0);
-+ sdio_release_host(func);
-+ if (ret)
-+ return ret;
-+
-+ return drv->probe(func, id);
-+}
-+
-+static int sdio_bus_remove(struct device *dev)
-+{
-+ struct sdio_driver *drv = to_sdio_driver(dev->driver);
-+ struct sdio_func *func = dev_to_sdio_func(dev);
-+
-+ drv->remove(func);
-+
-+ if (func->irq_handler) {
-+ printk(KERN_WARNING "WARNING: driver %s did not remove "
-+ "its interrupt handler!\n", drv->name);
-+ sdio_claim_host(func);
-+ sdio_release_irq(func);
-+ sdio_release_host(func);
-+ }
-+
-+ return 0;
-+}
-+
-+static struct bus_type sdio_bus_type = {
-+ .name = "sdio",
-+ .dev_attrs = sdio_dev_attrs,
-+ .match = sdio_bus_match,
-+ .uevent = sdio_bus_uevent,
-+ .probe = sdio_bus_probe,
-+ .remove = sdio_bus_remove,
-+};
-+
-+int sdio_register_bus(void)
-+{
-+ return bus_register(&sdio_bus_type);
-+}
-+
-+void sdio_unregister_bus(void)
-+{
-+ bus_unregister(&sdio_bus_type);
-+}
-+
-+/**
-+ * sdio_register_driver - register a function driver
-+ * @drv: SDIO function driver
-+ */
-+int sdio_register_driver(struct sdio_driver *drv)
-+{
-+ drv->drv.name = drv->name;
-+ drv->drv.bus = &sdio_bus_type;
-+ return driver_register(&drv->drv);
-+}
-+EXPORT_SYMBOL_GPL(sdio_register_driver);
-+
-+/**
-+ * sdio_unregister_driver - unregister a function driver
-+ * @drv: SDIO function driver
-+ */
-+void sdio_unregister_driver(struct sdio_driver *drv)
-+{
-+ drv->drv.bus = &sdio_bus_type;
-+ driver_unregister(&drv->drv);
-+}
-+EXPORT_SYMBOL_GPL(sdio_unregister_driver);
-+
-+static void sdio_release_func(struct device *dev)
-+{
-+ struct sdio_func *func = dev_to_sdio_func(dev);
-+
-+ sdio_free_func_cis(func);
-+
-+ if (func->info)
-+ kfree(func->info);
-+
-+ kfree(func);
-+}
-+
-+/*
-+ * Allocate and initialise a new SDIO function structure.
-+ */
-+struct sdio_func *sdio_alloc_func(struct mmc_card *card)
-+{
-+ struct sdio_func *func;
-+
-+ func = kzalloc(sizeof(struct sdio_func), GFP_KERNEL);
-+ if (!func)
-+ return ERR_PTR(-ENOMEM);
-+
-+ func->card = card;
-+
-+ device_initialize(&func->dev);
-+
-+ func->dev.parent = &card->dev;
-+ func->dev.bus = &sdio_bus_type;
-+ func->dev.release = sdio_release_func;
-+
-+ return func;
-+}
-+
-+/*
-+ * Register a new SDIO function with the driver model.
-+ */
-+int sdio_add_func(struct sdio_func *func)
-+{
-+ int ret;
-+
-+ snprintf(func->dev.bus_id, sizeof(func->dev.bus_id),
-+ "%s:%d", mmc_card_id(func->card), func->num);
-+
-+ ret = device_add(&func->dev);
-+ if (ret == 0)
-+ sdio_func_set_present(func);
-+
-+ return ret;
-+}
-+
-+/*
-+ * Unregister a SDIO function with the driver model, and
-+ * (eventually) free it.
-+ */
-+void sdio_remove_func(struct sdio_func *func)
-+{
-+ if (sdio_func_present(func))
-+ device_del(&func->dev);
-+
-+ put_device(&func->dev);
-+}
-+
---- /dev/null
-+++ b/drivers/mmc/core/sdio_bus.h
-@@ -0,0 +1,22 @@
-+/*
-+ * linux/drivers/mmc/core/sdio_bus.h
-+ *
-+ * Copyright 2007 Pierre Ossman
-+ *
-+ * This program is free software; you can redistribute it and/or modify
-+ * it under the terms of the GNU General Public License as published by
-+ * the Free Software Foundation; either version 2 of the License, or (at
-+ * your option) any later version.
-+ */
-+#ifndef _MMC_CORE_SDIO_BUS_H
-+#define _MMC_CORE_SDIO_BUS_H
-+
-+struct sdio_func *sdio_alloc_func(struct mmc_card *card);
-+int sdio_add_func(struct sdio_func *func);
-+void sdio_remove_func(struct sdio_func *func);
-+
-+int sdio_register_bus(void);
-+void sdio_unregister_bus(void);
-+
-+#endif
-+
---- /dev/null
-+++ b/drivers/mmc/core/sdio_cis.c
-@@ -0,0 +1,346 @@
-+/*
-+ * linux/drivers/mmc/core/sdio_cis.c
-+ *
-+ * Author: Nicolas Pitre
-+ * Created: June 11, 2007
-+ * Copyright: MontaVista Software Inc.
-+ *
-+ * Copyright 2007 Pierre Ossman
-+ *
-+ * This program is free software; you can redistribute it and/or modify
-+ * it under the terms of the GNU General Public License as published by
-+ * the Free Software Foundation; either version 2 of the License, or (at
-+ * your option) any later version.
-+ */
-+
-+#include <linux/kernel.h>
-+
-+#include <linux/mmc/host.h>
-+#include <linux/mmc/card.h>
-+#include <linux/mmc/sdio.h>
-+#include <linux/mmc/sdio_func.h>
-+
-+#include "sdio_cis.h"
-+#include "sdio_ops.h"
-+
-+static int cistpl_vers_1(struct mmc_card *card, struct sdio_func *func,
-+ const unsigned char *buf, unsigned size)
-+{
-+ unsigned i, nr_strings;
-+ char **buffer, *string;
-+
-+ buf += 2;
-+ size -= 2;
-+
-+ nr_strings = 0;
-+ for (i = 0; i < size; i++) {
-+ if (buf[i] == 0xff)
-+ break;
-+ if (buf[i] == 0)
-+ nr_strings++;
-+ }
-+
-+ if (buf[i-1] != '\0') {
-+ printk(KERN_WARNING "SDIO: ignoring broken CISTPL_VERS_1\n");
-+ return 0;
-+ }
-+
-+ size = i;
-+
-+ buffer = kzalloc(sizeof(char*) * nr_strings + size, GFP_KERNEL);
-+ if (!buffer)
-+ return -ENOMEM;
-+
-+ string = (char*)(buffer + nr_strings);
-+
-+ for (i = 0; i < nr_strings; i++) {
-+ buffer[i] = string;
-+ strcpy(string, buf);
-+ string += strlen(string) + 1;
-+ buf += strlen(buf) + 1;
-+ }
-+
-+ if (func) {
-+ func->num_info = nr_strings;
-+ func->info = (const char**)buffer;
-+ } else {
-+ card->num_info = nr_strings;
-+ card->info = (const char**)buffer;
-+ }
-+
-+ return 0;
-+}
-+
-+static int cistpl_manfid(struct mmc_card *card, struct sdio_func *func,
-+ const unsigned char *buf, unsigned size)
-+{
-+ unsigned int vendor, device;
-+
-+ /* TPLMID_MANF */
-+ vendor = buf[0] | (buf[1] << 8);
-+
-+ /* TPLMID_CARD */
-+ device = buf[2] | (buf[3] << 8);
-+
-+ if (func) {
-+ func->vendor = vendor;
-+ func->device = device;
-+ } else {
-+ card->cis.vendor = vendor;
-+ card->cis.device = device;
-+ }
-+
-+ return 0;
-+}
-+
-+static const unsigned char speed_val[16] =
-+ { 0, 10, 12, 13, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 70, 80 };
-+static const unsigned int speed_unit[8] =
-+ { 10000, 100000, 1000000, 10000000, 0, 0, 0, 0 };
-+
-+static int cistpl_funce_common(struct mmc_card *card,
-+ const unsigned char *buf, unsigned size)
-+{
-+ if (size < 0x04 || buf[0] != 0)
-+ return -EINVAL;
-+
-+ /* TPLFE_FN0_BLK_SIZE */
-+ card->cis.blksize = buf[1] | (buf[2] << 8);
-+
-+ /* TPLFE_MAX_TRAN_SPEED */
-+ card->cis.max_dtr = speed_val[(buf[3] >> 3) & 15] *
-+ speed_unit[buf[3] & 7];
-+
-+ return 0;
-+}
-+
-+static int cistpl_funce_func(struct sdio_func *func,
-+ const unsigned char *buf, unsigned size)
-+{
-+ unsigned vsn;
-+ unsigned min_size;
-+
-+ vsn = func->card->cccr.sdio_vsn;
-+ min_size = (vsn == SDIO_SDIO_REV_1_00) ? 28 : 42;
-+
-+ if (size < min_size || buf[0] != 1)
-+ return -EINVAL;
-+
-+ /* TPLFE_MAX_BLK_SIZE */
-+ func->max_blksize = buf[12] | (buf[13] << 8);
-+
-+ return 0;
-+}
-+
-+static int cistpl_funce(struct mmc_card *card, struct sdio_func *func,
-+ const unsigned char *buf, unsigned size)
-+{
-+ int ret;
-+
-+ /*
-+ * There should be two versions of the CISTPL_FUNCE tuple,
-+ * one for the common CIS (function 0) and a version used by
-+ * the individual function's CIS (1-7). Yet, the later has a
-+ * different length depending on the SDIO spec version.
-+ */
-+ if (func)
-+ ret = cistpl_funce_func(func, buf, size);
-+ else
-+ ret = cistpl_funce_common(card, buf, size);
-+
-+ if (ret) {
-+ printk(KERN_ERR "%s: bad CISTPL_FUNCE size %u "
-+ "type %u\n", mmc_hostname(card->host), size, buf[0]);
-+ return ret;
-+ }
-+
-+ return 0;
-+}
-+
-+typedef int (tpl_parse_t)(struct mmc_card *, struct sdio_func *,
-+ const unsigned char *, unsigned);
-+
-+struct cis_tpl {
-+ unsigned char code;
-+ unsigned char min_size;
-+ tpl_parse_t *parse;
-+};
-+
-+static const struct cis_tpl cis_tpl_list[] = {
-+ { 0x15, 3, cistpl_vers_1 },
-+ { 0x20, 4, cistpl_manfid },
-+ { 0x21, 2, /* cistpl_funcid */ },
-+ { 0x22, 0, cistpl_funce },
-+};
-+
-+static int sdio_read_cis(struct mmc_card *card, struct sdio_func *func)
-+{
-+ int ret;
-+ struct sdio_func_tuple *this, **prev;
-+ unsigned i, ptr = 0;
-+
-+ /*
-+ * Note that this works for the common CIS (function number 0) as
-+ * well as a function's CIS * since SDIO_CCCR_CIS and SDIO_FBR_CIS
-+ * have the same offset.
-+ */
-+ for (i = 0; i < 3; i++) {
-+ unsigned char x, fn;
-+
-+ if (func)
-+ fn = func->num;
-+ else
-+ fn = 0;
-+
-+ ret = mmc_io_rw_direct(card, 0, 0,
-+ SDIO_FBR_BASE(fn) + SDIO_FBR_CIS + i, 0, &x);
-+ if (ret)
-+ return ret;
-+ ptr |= x << (i * 8);
-+ }
-+
-+ if (func)
-+ prev = &func->tuples;
-+ else
-+ prev = &card->tuples;
-+
-+ BUG_ON(*prev);
-+
-+ do {
-+ unsigned char tpl_code, tpl_link;
-+
-+ ret = mmc_io_rw_direct(card, 0, 0, ptr++, 0, &tpl_code);
-+ if (ret)
-+ break;
-+
-+ /* 0xff means we're done */
-+ if (tpl_code == 0xff)
-+ break;
-+
-+ ret = mmc_io_rw_direct(card, 0, 0, ptr++, 0, &tpl_link);
-+ if (ret)
-+ break;
-+
-+ this = kmalloc(sizeof(*this) + tpl_link, GFP_KERNEL);
-+ if (!this)
-+ return -ENOMEM;
-+
-+ for (i = 0; i < tpl_link; i++) {
-+ ret = mmc_io_rw_direct(card, 0, 0,
-+ ptr + i, 0, &this->data[i]);
-+ if (ret)
-+ break;
-+ }
-+ if (ret) {
-+ kfree(this);
-+ break;
-+ }
-+
-+ for (i = 0; i < ARRAY_SIZE(cis_tpl_list); i++)
-+ if (cis_tpl_list[i].code == tpl_code)
-+ break;
-+ if (i >= ARRAY_SIZE(cis_tpl_list)) {
-+ /* this tuple is unknown to the core */
-+ this->next = NULL;
-+ this->code = tpl_code;
-+ this->size = tpl_link;
-+ *prev = this;
-+ prev = &this->next;
-+ printk(KERN_DEBUG
-+ "%s: queuing CIS tuple 0x%02x length %u\n",
-+ mmc_hostname(card->host), tpl_code, tpl_link);
-+ } else {
-+ const struct cis_tpl *tpl = cis_tpl_list + i;
-+ if (tpl_link < tpl->min_size) {
-+ printk(KERN_ERR
-+ "%s: bad CIS tuple 0x%02x (length = %u, expected >= %u)\n",
-+ mmc_hostname(card->host),
-+ tpl_code, tpl_link, tpl->min_size);
-+ ret = -EINVAL;
-+ } else if (tpl->parse) {
-+ ret = tpl->parse(card, func,
-+ this->data, tpl_link);
-+ }
-+ kfree(this);
-+ }
-+
-+ ptr += tpl_link;
-+ } while (!ret);
-+
-+ /*
-+ * Link in all unknown tuples found in the common CIS so that
-+ * drivers don't have to go digging in two places.
-+ */
-+ if (func)
-+ *prev = card->tuples;
-+
-+ return ret;
-+}
-+
-+int sdio_read_common_cis(struct mmc_card *card)
-+{
-+ return sdio_read_cis(card, NULL);
-+}
-+
-+void sdio_free_common_cis(struct mmc_card *card)
-+{
-+ struct sdio_func_tuple *tuple, *victim;
-+
-+ tuple = card->tuples;
-+
-+ while (tuple) {
-+ victim = tuple;
-+ tuple = tuple->next;
-+ kfree(victim);
-+ }
-+
-+ card->tuples = NULL;
-+}
-+
-+int sdio_read_func_cis(struct sdio_func *func)
-+{
-+ int ret;
-+
-+ ret = sdio_read_cis(func->card, func);
-+ if (ret)
-+ return ret;
-+
-+ /*
-+ * Since we've linked to tuples in the card structure,
-+ * we must make sure we have a reference to it.
-+ */
-+ get_device(&func->card->dev);
-+
-+ /*
-+ * Vendor/device id is optional for function CIS, so
-+ * copy it from the card structure as needed.
-+ */
-+ if (func->vendor == 0) {
-+ func->vendor = func->card->cis.vendor;
-+ func->device = func->card->cis.device;
-+ }
-+
-+ return 0;
-+}
-+
-+void sdio_free_func_cis(struct sdio_func *func)
-+{
-+ struct sdio_func_tuple *tuple, *victim;
-+
-+ tuple = func->tuples;
-+
-+ while (tuple && tuple != func->card->tuples) {
-+ victim = tuple;
-+ tuple = tuple->next;
-+ kfree(victim);
-+ }
-+
-+ func->tuples = NULL;
-+
-+ /*
-+ * We have now removed the link to the tuples in the
-+ * card structure, so remove the reference.
-+ */
-+ put_device(&func->card->dev);
-+}
-+
---- /dev/null
-+++ b/drivers/mmc/core/sdio_cis.h
-@@ -0,0 +1,23 @@
-+/*
-+ * linux/drivers/mmc/core/sdio_cis.h
-+ *
-+ * Author: Nicolas Pitre
-+ * Created: June 11, 2007
-+ * Copyright: MontaVista Software Inc.
-+ *
-+ * This program is free software; you can redistribute it and/or modify
-+ * it under the terms of the GNU General Public License as published by
-+ * the Free Software Foundation; either version 2 of the License, or (at
-+ * your option) any later version.
-+ */
-+
-+#ifndef _MMC_SDIO_CIS_H
-+#define _MMC_SDIO_CIS_H
-+
-+int sdio_read_common_cis(struct mmc_card *card);
-+void sdio_free_common_cis(struct mmc_card *card);
-+
-+int sdio_read_func_cis(struct sdio_func *func);
-+void sdio_free_func_cis(struct sdio_func *func);
-+
-+#endif
---- /dev/null
-+++ b/drivers/mmc/core/sdio_io.c
-@@ -0,0 +1,548 @@
-+/*
-+ * linux/drivers/mmc/core/sdio_io.c
-+ *
-+ * Copyright 2007 Pierre Ossman
-+ *
-+ * This program is free software; you can redistribute it and/or modify
-+ * it under the terms of the GNU General Public License as published by
-+ * the Free Software Foundation; either version 2 of the License, or (at
-+ * your option) any later version.
-+ */
-+
-+#include <linux/mmc/host.h>
-+#include <linux/mmc/card.h>
-+#include <linux/mmc/sdio.h>
-+#include <linux/mmc/sdio_func.h>
-+
-+#include "sdio_ops.h"
-+
-+/**
-+ * sdio_claim_host - exclusively claim a bus for a certain SDIO function
-+ * @func: SDIO function that will be accessed
-+ *
-+ * Claim a bus for a set of operations. The SDIO function given
-+ * is used to figure out which bus is relevant.
-+ */
-+void sdio_claim_host(struct sdio_func *func)
-+{
-+ BUG_ON(!func);
-+ BUG_ON(!func->card);
-+
-+ mmc_claim_host(func->card->host);
-+}
-+EXPORT_SYMBOL_GPL(sdio_claim_host);
-+
-+/**
-+ * sdio_release_host - release a bus for a certain SDIO function
-+ * @func: SDIO function that was accessed
-+ *
-+ * Release a bus, allowing others to claim the bus for their
-+ * operations.
-+ */
-+void sdio_release_host(struct sdio_func *func)
-+{
-+ BUG_ON(!func);
-+ BUG_ON(!func->card);
-+
-+ mmc_release_host(func->card->host);
-+}
-+EXPORT_SYMBOL_GPL(sdio_release_host);
-+
-+/**
-+ * sdio_enable_func - enables a SDIO function for usage
-+ * @func: SDIO function to enable
-+ *
-+ * Powers up and activates a SDIO function so that register
-+ * access is possible.
-+ */
-+int sdio_enable_func(struct sdio_func *func)
-+{
-+ int ret;
-+ unsigned char reg;
-+ unsigned long timeout;
-+
-+ BUG_ON(!func);
-+ BUG_ON(!func->card);
-+
-+ pr_debug("SDIO: Enabling device %s...\n", sdio_func_id(func));
-+
-+ ret = mmc_io_rw_direct(func->card, 0, 0, SDIO_CCCR_IOEx, 0, ®);
-+ if (ret)
-+ goto err;
-+
-+ reg |= 1 << func->num;
-+
-+ ret = mmc_io_rw_direct(func->card, 1, 0, SDIO_CCCR_IOEx, reg, NULL);
-+ if (ret)
-+ goto err;
-+
-+ /*
-+ * FIXME: This should timeout based on information in the CIS,
-+ * but we don't have card to parse that yet.
-+ */
-+ timeout = jiffies + HZ;
-+
-+ while (1) {
-+ ret = mmc_io_rw_direct(func->card, 0, 0, SDIO_CCCR_IORx, 0, ®);
-+ if (ret)
-+ goto err;
-+ if (reg & (1 << func->num))
-+ break;
-+ ret = -ETIME;
-+ if (time_after(jiffies, timeout))
-+ goto err;
-+ }
-+
-+ pr_debug("SDIO: Enabled device %s\n", sdio_func_id(func));
-+
-+ return 0;
-+
-+err:
-+ pr_debug("SDIO: Failed to enable device %s\n", sdio_func_id(func));
-+ return ret;
-+}
-+EXPORT_SYMBOL_GPL(sdio_enable_func);
-+
-+/**
-+ * sdio_disable_func - disable a SDIO function
-+ * @func: SDIO function to disable
-+ *
-+ * Powers down and deactivates a SDIO function. Register access
-+ * to this function will fail until the function is reenabled.
-+ */
-+int sdio_disable_func(struct sdio_func *func)
-+{
-+ int ret;
-+ unsigned char reg;
-+
-+ BUG_ON(!func);
-+ BUG_ON(!func->card);
-+
-+ pr_debug("SDIO: Disabling device %s...\n", sdio_func_id(func));
-+
-+ ret = mmc_io_rw_direct(func->card, 0, 0, SDIO_CCCR_IOEx, 0, ®);
-+ if (ret)
-+ goto err;
-+
-+ reg &= ~(1 << func->num);
-+
-+ ret = mmc_io_rw_direct(func->card, 1, 0, SDIO_CCCR_IOEx, reg, NULL);
-+ if (ret)
-+ goto err;
-+
-+ pr_debug("SDIO: Disabled device %s\n", sdio_func_id(func));
-+
-+ return 0;
-+
-+err:
-+ pr_debug("SDIO: Failed to disable device %s\n", sdio_func_id(func));
-+ return -EIO;
-+}
-+EXPORT_SYMBOL_GPL(sdio_disable_func);
-+
-+/**
-+ * sdio_set_block_size - set the block size of an SDIO function
-+ * @func: SDIO function to change
-+ * @blksz: new block size or 0 to use the default.
-+ *
-+ * The default block size is the largest supported by both the function
-+ * and the host, with a maximum of 512 to ensure that arbitrarily sized
-+ * data transfer use the optimal (least) number of commands.
-+ *
-+ * A driver may call this to override the default block size set by the
-+ * core. This can be used to set a block size greater than the maximum
-+ * that reported by the card; it is the driver's responsibility to ensure
-+ * it uses a value that the card supports.
-+ *
-+ * Returns 0 on success, -EINVAL if the host does not support the
-+ * requested block size, or -EIO (etc.) if one of the resultant FBR block
-+ * size register writes failed.
-+ *
-+ */
-+int sdio_set_block_size(struct sdio_func *func, unsigned blksz)
-+{
-+ int ret;
-+
-+ if (blksz > func->card->host->max_blk_size)
-+ return -EINVAL;
-+
-+ if (blksz == 0) {
-+ blksz = min(min(
-+ func->max_blksize,
-+ func->card->host->max_blk_size),
-+ 512u);
-+ }
-+
-+ ret = mmc_io_rw_direct(func->card, 1, 0,
-+ SDIO_FBR_BASE(func->num) + SDIO_FBR_BLKSIZE,
-+ blksz & 0xff, NULL);
-+ if (ret)
-+ return ret;
-+ ret = mmc_io_rw_direct(func->card, 1, 0,
-+ SDIO_FBR_BASE(func->num) + SDIO_FBR_BLKSIZE + 1,
-+ (blksz >> 8) & 0xff, NULL);
-+ if (ret)
-+ return ret;
-+ func->cur_blksize = blksz;
-+ return 0;
-+}
-+
-+EXPORT_SYMBOL_GPL(sdio_set_block_size);
-+
-+/* Split an arbitrarily sized data transfer into several
-+ * IO_RW_EXTENDED commands. */
-+static int sdio_io_rw_ext_helper(struct sdio_func *func, int write,
-+ unsigned addr, int incr_addr, u8 *buf, unsigned size)
-+{
-+ unsigned remainder = size;
-+ unsigned max_blocks;
-+ int ret;
-+
-+ /* Do the bulk of the transfer using block mode (if supported). */
-+ if (func->card->cccr.multi_block) {
-+ /* Blocks per command is limited by host count, host transfer
-+ * size (we only use a single sg entry) and the maximum for
-+ * IO_RW_EXTENDED of 511 blocks. */
-+ max_blocks = min(min(
-+ func->card->host->max_blk_count,
-+ func->card->host->max_seg_size / func->cur_blksize),
-+ 511u);
-+
-+ while (remainder > func->cur_blksize) {
-+ unsigned blocks;
-+
-+ blocks = remainder / func->cur_blksize;
-+ if (blocks > max_blocks)
-+ blocks = max_blocks;
-+ size = blocks * func->cur_blksize;
-+
-+ ret = mmc_io_rw_extended(func->card, write,
-+ func->num, addr, incr_addr, buf,
-+ blocks, func->cur_blksize);
-+ if (ret)
-+ return ret;
-+
-+ remainder -= size;
-+ buf += size;
-+ if (incr_addr)
-+ addr += size;
-+ }
-+ }
-+
-+ /* Write the remainder using byte mode. */
-+ while (remainder > 0) {
-+ size = remainder;
-+ if (size > func->cur_blksize)
-+ size = func->cur_blksize;
-+ if (size > 512)
-+ size = 512; /* maximum size for byte mode */
-+
-+ ret = mmc_io_rw_extended(func->card, write, func->num, addr,
-+ incr_addr, buf, 1, size);
-+ if (ret)
-+ return ret;
-+
-+ remainder -= size;
-+ buf += size;
-+ if (incr_addr)
-+ addr += size;
-+ }
-+ return 0;
-+}
-+
-+/**
-+ * sdio_readb - read a single byte from a SDIO function
-+ * @func: SDIO function to access
-+ * @addr: address to read
-+ * @err_ret: optional status value from transfer
-+ *
-+ * Reads a single byte from the address space of a given SDIO
-+ * function. If there is a problem reading the address, 0xff
-+ * is returned and @err_ret will contain the error code.
-+ */
-+unsigned char sdio_readb(struct sdio_func *func, unsigned int addr,
-+ int *err_ret)
-+{
-+ int ret;
-+ unsigned char val;
-+
-+ BUG_ON(!func);
-+
-+ if (err_ret)
-+ *err_ret = 0;
-+
-+ ret = mmc_io_rw_direct(func->card, 0, func->num, addr, 0, &val);
-+ if (ret) {
-+ if (err_ret)
-+ *err_ret = ret;
-+ return 0xFF;
-+ }
-+
-+ return val;
-+}
-+EXPORT_SYMBOL_GPL(sdio_readb);
-+
-+/**
-+ * sdio_writeb - write a single byte to a SDIO function
-+ * @func: SDIO function to access
-+ * @b: byte to write
-+ * @addr: address to write to
-+ * @err_ret: optional status value from transfer
-+ *
-+ * Writes a single byte to the address space of a given SDIO
-+ * function. @err_ret will contain the status of the actual
-+ * transfer.
-+ */
-+void sdio_writeb(struct sdio_func *func, unsigned char b, unsigned int addr,
-+ int *err_ret)
-+{
-+ int ret;
-+
-+ BUG_ON(!func);
-+
-+ ret = mmc_io_rw_direct(func->card, 1, func->num, addr, b, NULL);
-+ if (err_ret)
-+ *err_ret = ret;
-+}
-+EXPORT_SYMBOL_GPL(sdio_writeb);
-+
-+/**
-+ * sdio_memcpy_fromio - read a chunk of memory from a SDIO function
-+ * @func: SDIO function to access
-+ * @dst: buffer to store the data
-+ * @addr: address to begin reading from
-+ * @count: number of bytes to read
-+ *
-+ * Reads from the address space of a given SDIO function. Return
-+ * value indicates if the transfer succeeded or not.
-+ */
-+int sdio_memcpy_fromio(struct sdio_func *func, void *dst,
-+ unsigned int addr, int count)
-+{
-+ return sdio_io_rw_ext_helper(func, 0, addr, 1, dst, count);
-+}
-+EXPORT_SYMBOL_GPL(sdio_memcpy_fromio);
-+
-+/**
-+ * sdio_memcpy_toio - write a chunk of memory to a SDIO function
-+ * @func: SDIO function to access
-+ * @addr: address to start writing to
-+ * @src: buffer that contains the data to write
-+ * @count: number of bytes to write
-+ *
-+ * Writes to the address space of a given SDIO function. Return
-+ * value indicates if the transfer succeeded or not.
-+ */
-+int sdio_memcpy_toio(struct sdio_func *func, unsigned int addr,
-+ void *src, int count)
-+{
-+ return sdio_io_rw_ext_helper(func, 1, addr, 1, src, count);
-+}
-+EXPORT_SYMBOL_GPL(sdio_memcpy_toio);
-+
-+/**
-+ * sdio_readsb - read from a FIFO on a SDIO function
-+ * @func: SDIO function to access
-+ * @dst: buffer to store the data
-+ * @addr: address of (single byte) FIFO
-+ * @count: number of bytes to read
-+ *
-+ * Reads from the specified FIFO of a given SDIO function. Return
-+ * value indicates if the transfer succeeded or not.
-+ */
-+int sdio_readsb(struct sdio_func *func, void *dst, unsigned int addr,
-+ int count)
-+{
-+ return sdio_io_rw_ext_helper(func, 0, addr, 0, dst, count);
-+}
-+
-+EXPORT_SYMBOL_GPL(sdio_readsb);
-+
-+/**
-+ * sdio_writesb - write to a FIFO of a SDIO function
-+ * @func: SDIO function to access
-+ * @addr: address of (single byte) FIFO
-+ * @src: buffer that contains the data to write
-+ * @count: number of bytes to write
-+ *
-+ * Writes to the specified FIFO of a given SDIO function. Return
-+ * value indicates if the transfer succeeded or not.
-+ */
-+int sdio_writesb(struct sdio_func *func, unsigned int addr, void *src,
-+ int count)
-+{
-+ return sdio_io_rw_ext_helper(func, 1, addr, 0, src, count);
-+}
-+EXPORT_SYMBOL_GPL(sdio_writesb);
-+
-+/**
-+ * sdio_readw - read a 16 bit integer from a SDIO function
-+ * @func: SDIO function to access
-+ * @addr: address to read
-+ * @err_ret: optional status value from transfer
-+ *
-+ * Reads a 16 bit integer from the address space of a given SDIO
-+ * function. If there is a problem reading the address, 0xffff
-+ * is returned and @err_ret will contain the error code.
-+ */
-+unsigned short sdio_readw(struct sdio_func *func, unsigned int addr,
-+ int *err_ret)
-+{
-+ int ret;
-+
-+ if (err_ret)
-+ *err_ret = 0;
-+
-+ ret = sdio_memcpy_fromio(func, func->tmpbuf, addr, 2);
-+ if (ret) {
-+ if (err_ret)
-+ *err_ret = ret;
-+ return 0xFFFF;
-+ }
-+
-+ return le16_to_cpu(*(u16*)func->tmpbuf);
-+}
-+EXPORT_SYMBOL_GPL(sdio_readw);
-+
-+/**
-+ * sdio_writew - write a 16 bit integer to a SDIO function
-+ * @func: SDIO function to access
-+ * @b: integer to write
-+ * @addr: address to write to
-+ * @err_ret: optional status value from transfer
-+ *
-+ * Writes a 16 bit integer to the address space of a given SDIO
-+ * function. @err_ret will contain the status of the actual
-+ * transfer.
-+ */
-+void sdio_writew(struct sdio_func *func, unsigned short b, unsigned int addr,
-+ int *err_ret)
-+{
-+ int ret;
-+
-+ *(u16*)func->tmpbuf = cpu_to_le16(b);
-+
-+ ret = sdio_memcpy_toio(func, addr, func->tmpbuf, 2);
-+ if (err_ret)
-+ *err_ret = ret;
-+}
-+EXPORT_SYMBOL_GPL(sdio_writew);
-+
-+/**
-+ * sdio_readl - read a 32 bit integer from a SDIO function
-+ * @func: SDIO function to access
-+ * @addr: address to read
-+ * @err_ret: optional status value from transfer
-+ *
-+ * Reads a 32 bit integer from the address space of a given SDIO
-+ * function. If there is a problem reading the address,
-+ * 0xffffffff is returned and @err_ret will contain the error
-+ * code.
-+ */
-+unsigned long sdio_readl(struct sdio_func *func, unsigned int addr,
-+ int *err_ret)
-+{
-+ int ret;
-+
-+ if (err_ret)
-+ *err_ret = 0;
-+
-+ ret = sdio_memcpy_fromio(func, func->tmpbuf, addr, 4);
-+ if (ret) {
-+ if (err_ret)
-+ *err_ret = ret;
-+ return 0xFFFFFFFF;
-+ }
-+
-+ return le32_to_cpu(*(u32*)func->tmpbuf);
-+}
-+EXPORT_SYMBOL_GPL(sdio_readl);
-+
-+/**
-+ * sdio_writel - write a 32 bit integer to a SDIO function
-+ * @func: SDIO function to access
-+ * @b: integer to write
-+ * @addr: address to write to
-+ * @err_ret: optional status value from transfer
-+ *
-+ * Writes a 32 bit integer to the address space of a given SDIO
-+ * function. @err_ret will contain the status of the actual
-+ * transfer.
-+ */
-+void sdio_writel(struct sdio_func *func, unsigned long b, unsigned int addr,
-+ int *err_ret)
-+{
-+ int ret;
-+
-+ *(u32*)func->tmpbuf = cpu_to_le32(b);
-+
-+ ret = sdio_memcpy_toio(func, addr, func->tmpbuf, 4);
-+ if (err_ret)
-+ *err_ret = ret;
-+}
-+EXPORT_SYMBOL_GPL(sdio_writel);
-+
-+/**
-+ * sdio_f0_readb - read a single byte from SDIO function 0
-+ * @func: an SDIO function of the card
-+ * @addr: address to read
-+ * @err_ret: optional status value from transfer
-+ *
-+ * Reads a single byte from the address space of SDIO function 0.
-+ * If there is a problem reading the address, 0xff is returned
-+ * and @err_ret will contain the error code.
-+ */
-+unsigned char sdio_f0_readb(struct sdio_func *func, unsigned int addr,
-+ int *err_ret)
-+{
-+ int ret;
-+ unsigned char val;
-+
-+ BUG_ON(!func);
-+
-+ if (err_ret)
-+ *err_ret = 0;
-+
-+ ret = mmc_io_rw_direct(func->card, 0, 0, addr, 0, &val);
-+ if (ret) {
-+ if (err_ret)
-+ *err_ret = ret;
-+ return 0xFF;
-+ }
-+
-+ return val;
-+}
-+EXPORT_SYMBOL_GPL(sdio_f0_readb);
-+
-+/**
-+ * sdio_f0_writeb - write a single byte to SDIO function 0
-+ * @func: an SDIO function of the card
-+ * @b: byte to write
-+ * @addr: address to write to
-+ * @err_ret: optional status value from transfer
-+ *
-+ * Writes a single byte to the address space of SDIO function 0.
-+ * @err_ret will contain the status of the actual transfer.
-+ *
-+ * Only writes to the vendor specific CCCR registers (0xF0 -
-+ * 0xFF) are permiited; @err_ret will be set to -EINVAL for *
-+ * writes outside this range.
-+ */
-+void sdio_f0_writeb(struct sdio_func *func, unsigned char b, unsigned int addr,
-+ int *err_ret)
-+{
-+ int ret;
-+
-+ BUG_ON(!func);
-+
-+ if (addr < 0xF0 || addr > 0xFF) {
-+ if (err_ret)
-+ *err_ret = -EINVAL;
-+ return;
-+ }
-+
-+ ret = mmc_io_rw_direct(func->card, 1, 0, addr, b, NULL);
-+ if (err_ret)
-+ *err_ret = ret;
-+}
-+EXPORT_SYMBOL_GPL(sdio_f0_writeb);
---- /dev/null
-+++ b/drivers/mmc/core/sdio_irq.c
-@@ -0,0 +1,267 @@
-+/*
-+ * linux/drivers/mmc/core/sdio_irq.c
-+ *
-+ * Author: Nicolas Pitre
-+ * Created: June 18, 2007
-+ * Copyright: MontaVista Software Inc.
-+ *
-+ * This program is free software; you can redistribute it and/or modify
-+ * it under the terms of the GNU General Public License as published by
-+ * the Free Software Foundation; either version 2 of the License, or (at
-+ * your option) any later version.
-+ */
-+
-+#include <linux/kernel.h>
-+#include <linux/sched.h>
-+#include <linux/kthread.h>
-+#include <linux/wait.h>
-+#include <linux/delay.h>
-+
-+#include <linux/mmc/core.h>
-+#include <linux/mmc/host.h>
-+#include <linux/mmc/card.h>
-+#include <linux/mmc/sdio.h>
-+#include <linux/mmc/sdio_func.h>
-+
-+#include "sdio_ops.h"
-+
-+static int process_sdio_pending_irqs(struct mmc_card *card)
-+{
-+ int i, ret, count;
-+ unsigned char pending;
-+
-+ ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_INTx, 0, &pending);
-+ if (ret) {
-+ printk(KERN_DEBUG "%s: error %d reading SDIO_CCCR_INTx\n",
-+ mmc_card_id(card), ret);
-+ return ret;
-+ }
-+
-+ count = 0;
-+ for (i = 1; i <= 7; i++) {
-+ if (pending & (1 << i)) {
-+ struct sdio_func *func = card->sdio_func[i - 1];
-+ if (!func) {
-+ printk(KERN_WARNING "%s: pending IRQ for "
-+ "non-existant function\n",
-+ mmc_card_id(card));
-+ ret = -EINVAL;
-+ } else if (func->irq_handler) {
-+ func->irq_handler(func);
-+ count++;
-+ } else {
-+ printk(KERN_WARNING "%s: pending IRQ with no handler\n",
-+ sdio_func_id(func));
-+ ret = -EINVAL;
-+ }
-+ }
-+ }
-+
-+ if (count)
-+ return count;
-+
-+ return ret;
-+}
-+
-+static int sdio_irq_thread(void *_host)
-+{
-+ struct mmc_host *host = _host;
-+ struct sched_param param = { .sched_priority = 1 };
-+ unsigned long period, idle_period;
-+ int ret;
-+
-+ sched_setscheduler(current, SCHED_FIFO, ¶m);
-+
-+ /*
-+ * We want to allow for SDIO cards to work even on non SDIO
-+ * aware hosts. One thing that non SDIO host cannot do is
-+ * asynchronous notification of pending SDIO card interrupts
-+ * hence we poll for them in that case.
-+ */
-+ idle_period = msecs_to_jiffies(10);
-+ period = (host->caps & MMC_CAP_SDIO_IRQ) ?
-+ MAX_SCHEDULE_TIMEOUT : idle_period;
-+
-+ pr_debug("%s: IRQ thread started (poll period = %lu jiffies)\n",
-+ mmc_hostname(host), period);
-+
-+ do {
-+ /*
-+ * We claim the host here on drivers behalf for a couple
-+ * reasons:
-+ *
-+ * 1) it is already needed to retrieve the CCCR_INTx;
-+ * 2) we want the driver(s) to clear the IRQ condition ASAP;
-+ * 3) we need to control the abort condition locally.
-+ *
-+ * Just like traditional hard IRQ handlers, we expect SDIO
-+ * IRQ handlers to be quick and to the point, so that the
-+ * holding of the host lock does not cover too much work
-+ * that doesn't require that lock to be held.
-+ */
-+ ret = __mmc_claim_host(host, &host->sdio_irq_thread_abort);
-+ if (ret)
-+ break;
-+ ret = process_sdio_pending_irqs(host->card);
-+ mmc_release_host(host);
-+
-+ /*
-+ * Give other threads a chance to run in the presence of
-+ * errors. FIXME: determine if due to card removal and
-+ * possibly exit this thread if so.
-+ */
-+ if (ret < 0)
-+ ssleep(1);
-+
-+ /*
-+ * Adaptive polling frequency based on the assumption
-+ * that an interrupt will be closely followed by more.
-+ * This has a substantial benefit for network devices.
-+ */
-+ if (!(host->caps & MMC_CAP_SDIO_IRQ)) {
-+ if (ret > 0)
-+ period /= 2;
-+ else {
-+ period++;
-+ if (period > idle_period)
-+ period = idle_period;
-+ }
-+ }
-+
-+ set_task_state(current, TASK_INTERRUPTIBLE);
-+ if (host->caps & MMC_CAP_SDIO_IRQ)
-+ host->ops->enable_sdio_irq(host, 1);
-+ if (!kthread_should_stop())
-+ schedule_timeout(period);
-+ set_task_state(current, TASK_RUNNING);
-+ } while (!kthread_should_stop());
-+
-+ if (host->caps & MMC_CAP_SDIO_IRQ)
-+ host->ops->enable_sdio_irq(host, 0);
-+
-+ pr_debug("%s: IRQ thread exiting with code %d\n",
-+ mmc_hostname(host), ret);
-+
-+ return ret;
-+}
-+
-+static int sdio_card_irq_get(struct mmc_card *card)
-+{
-+ struct mmc_host *host = card->host;
-+
-+ WARN_ON(!host->claimed);
-+
-+ if (!host->sdio_irqs++) {
-+ atomic_set(&host->sdio_irq_thread_abort, 0);
-+ host->sdio_irq_thread =
-+ kthread_run(sdio_irq_thread, host, "ksdiorqd");
-+ if (IS_ERR(host->sdio_irq_thread)) {
-+ int err = PTR_ERR(host->sdio_irq_thread);
-+ host->sdio_irqs--;
-+ return err;
-+ }
-+ }
-+
-+ return 0;
-+}
-+
-+static int sdio_card_irq_put(struct mmc_card *card)
-+{
-+ struct mmc_host *host = card->host;
-+
-+ WARN_ON(!host->claimed);
-+ BUG_ON(host->sdio_irqs < 1);
-+
-+ if (!--host->sdio_irqs) {
-+ atomic_set(&host->sdio_irq_thread_abort, 1);
-+ kthread_stop(host->sdio_irq_thread);
-+ }
-+
-+ return 0;
-+}
-+
-+/**
-+ * sdio_claim_irq - claim the IRQ for a SDIO function
-+ * @func: SDIO function
-+ * @handler: IRQ handler callback
-+ *
-+ * Claim and activate the IRQ for the given SDIO function. The provided
-+ * handler will be called when that IRQ is asserted. The host is always
-+ * claimed already when the handler is called so the handler must not
-+ * call sdio_claim_host() nor sdio_release_host().
-+ */
-+int sdio_claim_irq(struct sdio_func *func, sdio_irq_handler_t *handler)
-+{
-+ int ret;
-+ unsigned char reg;
-+
-+ BUG_ON(!func);
-+ BUG_ON(!func->card);
-+
-+ pr_debug("SDIO: Enabling IRQ for %s...\n", sdio_func_id(func));
-+
-+ if (func->irq_handler) {
-+ pr_debug("SDIO: IRQ for %s already in use.\n", sdio_func_id(func));
-+ return -EBUSY;
-+ }
-+
-+ ret = mmc_io_rw_direct(func->card, 0, 0, SDIO_CCCR_IENx, 0, ®);
-+ if (ret)
-+ return ret;
-+
-+ reg |= 1 << func->num;
-+
-+ reg |= 1; /* Master interrupt enable */
-+
-+ ret = mmc_io_rw_direct(func->card, 1, 0, SDIO_CCCR_IENx, reg, NULL);
-+ if (ret)
-+ return ret;
-+
-+ func->irq_handler = handler;
-+ ret = sdio_card_irq_get(func->card);
-+ if (ret)
-+ func->irq_handler = NULL;
-+
-+ return ret;
-+}
-+EXPORT_SYMBOL_GPL(sdio_claim_irq);
-+
-+/**
-+ * sdio_release_irq - release the IRQ for a SDIO function
-+ * @func: SDIO function
-+ *
-+ * Disable and release the IRQ for the given SDIO function.
-+ */
-+int sdio_release_irq(struct sdio_func *func)
-+{
-+ int ret;
-+ unsigned char reg;
-+
-+ BUG_ON(!func);
-+ BUG_ON(!func->card);
-+
-+ pr_debug("SDIO: Disabling IRQ for %s...\n", sdio_func_id(func));
-+
-+ if (func->irq_handler) {
-+ func->irq_handler = NULL;
-+ sdio_card_irq_put(func->card);
-+ }
-+
-+ ret = mmc_io_rw_direct(func->card, 0, 0, SDIO_CCCR_IENx, 0, ®);
-+ if (ret)
-+ return ret;
-+
-+ reg &= ~(1 << func->num);
-+
-+ /* Disable master interrupt with the last function interrupt */
-+ if (!(reg & 0xFE))
-+ reg = 0;
-+
-+ ret = mmc_io_rw_direct(func->card, 1, 0, SDIO_CCCR_IENx, reg, NULL);
-+ if (ret)
-+ return ret;
-+
-+ return 0;
-+}
-+EXPORT_SYMBOL_GPL(sdio_release_irq);
-+
---- /dev/null
-+++ b/drivers/mmc/core/sdio_ops.c
-@@ -0,0 +1,175 @@
-+/*
-+ * linux/drivers/mmc/sdio_ops.c
-+ *
-+ * Copyright 2006-2007 Pierre Ossman
-+ *
-+ * This program is free software; you can redistribute it and/or modify
-+ * it under the terms of the GNU General Public License as published by
-+ * the Free Software Foundation; either version 2 of the License, or (at
-+ * your option) any later version.
-+ */
-+
-+#include <linux/scatterlist.h>
-+
-+#include <linux/mmc/host.h>
-+#include <linux/mmc/card.h>
-+#include <linux/mmc/mmc.h>
-+#include <linux/mmc/sdio.h>
-+
-+#include "core.h"
-+
-+int mmc_send_io_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr)
-+{
-+ struct mmc_command cmd;
-+ int i, err = 0;
-+
-+ BUG_ON(!host);
-+
-+ memset(&cmd, 0, sizeof(struct mmc_command));
-+
-+ cmd.opcode = SD_IO_SEND_OP_COND;
-+ cmd.arg = ocr;
-+ cmd.flags = MMC_RSP_SPI_R4 | MMC_RSP_R4 | MMC_CMD_BCR;
-+
-+ for (i = 100; i; i--) {
-+ err = mmc_wait_for_cmd(host, &cmd, MMC_CMD_RETRIES);
-+ if (err)
-+ break;
-+
-+ /* if we're just probing, do a single pass */
-+ if (ocr == 0)
-+ break;
-+
-+ /* otherwise wait until reset completes */
-+ if (mmc_host_is_spi(host)) {
-+ /*
-+ * Both R1_SPI_IDLE and MMC_CARD_BUSY indicate
-+ * an initialized card under SPI, but some cards
-+ * (Marvell's) only behave when looking at this
-+ * one.
-+ */
-+ if (cmd.resp[1] & MMC_CARD_BUSY)
-+ break;
-+ } else {
-+ if (cmd.resp[0] & MMC_CARD_BUSY)
-+ break;
-+ }
-+
-+ err = -ETIMEDOUT;
-+
-+ mmc_delay(10);
-+ }
-+
-+ if (rocr)
-+ *rocr = cmd.resp[mmc_host_is_spi(host) ? 1 : 0];
-+
-+ return err;
-+}
-+
-+int mmc_io_rw_direct(struct mmc_card *card, int write, unsigned fn,
-+ unsigned addr, u8 in, u8* out)
-+{
-+ struct mmc_command cmd;
-+ int err;
-+
-+ BUG_ON(!card);
-+ BUG_ON(fn > 7);
-+
-+ memset(&cmd, 0, sizeof(struct mmc_command));
-+
-+ cmd.opcode = SD_IO_RW_DIRECT;
-+ cmd.arg = write ? 0x80000000 : 0x00000000;
-+ cmd.arg |= fn << 28;
-+ cmd.arg |= (write && out) ? 0x08000000 : 0x00000000;
-+ cmd.arg |= addr << 9;
-+ cmd.arg |= in;
-+ cmd.flags = MMC_RSP_SPI_R5 | MMC_RSP_R5 | MMC_CMD_AC;
-+
-+ err = mmc_wait_for_cmd(card->host, &cmd, 0);
-+ if (err)
-+ return err;
-+
-+ if (mmc_host_is_spi(card->host)) {
-+ /* host driver already reported errors */
-+ } else {
-+ if (cmd.resp[0] & R5_ERROR)
-+ return -EIO;
-+ if (cmd.resp[0] & R5_FUNCTION_NUMBER)
-+ return -EINVAL;
-+ if (cmd.resp[0] & R5_OUT_OF_RANGE)
-+ return -ERANGE;
-+ }
-+
-+ if (out) {
-+ if (mmc_host_is_spi(card->host))
-+ *out = (cmd.resp[0] >> 8) & 0xFF;
-+ else
-+ *out = cmd.resp[0] & 0xFF;
-+ }
-+
-+ return 0;
-+}
-+
-+int mmc_io_rw_extended(struct mmc_card *card, int write, unsigned fn,
-+ unsigned addr, int incr_addr, u8 *buf, unsigned blocks, unsigned blksz)
-+{
-+ struct mmc_request mrq;
-+ struct mmc_command cmd;
-+ struct mmc_data data;
-+ struct scatterlist sg;
-+
-+ BUG_ON(!card);
-+ BUG_ON(fn > 7);
-+ BUG_ON(blocks == 1 && blksz > 512);
-+ WARN_ON(blocks == 0);
-+ WARN_ON(blksz == 0);
-+
-+ memset(&mrq, 0, sizeof(struct mmc_request));
-+ memset(&cmd, 0, sizeof(struct mmc_command));
-+ memset(&data, 0, sizeof(struct mmc_data));
-+
-+ mrq.cmd = &cmd;
-+ mrq.data = &data;
-+
-+ cmd.opcode = SD_IO_RW_EXTENDED;
-+ cmd.arg = write ? 0x80000000 : 0x00000000;
-+ cmd.arg |= fn << 28;
-+ cmd.arg |= incr_addr ? 0x04000000 : 0x00000000;
-+ cmd.arg |= addr << 9;
-+ if (blocks == 1 && blksz <= 512)
-+ cmd.arg |= (blksz == 512) ? 0 : blksz; /* byte mode */
-+ else
-+ cmd.arg |= 0x08000000 | blocks; /* block mode */
-+ cmd.flags = MMC_RSP_SPI_R5 | MMC_RSP_R5 | MMC_CMD_ADTC;
-+
-+ data.blksz = blksz;
-+ data.blocks = blocks;
-+ data.flags = write ? MMC_DATA_WRITE : MMC_DATA_READ;
-+ data.sg = &sg;
-+ data.sg_len = 1;
-+
-+ sg_init_one(&sg, buf, blksz * blocks);
-+
-+ mmc_set_data_timeout(&data, card);
-+
-+ mmc_wait_for_req(card->host, &mrq);
-+
-+ if (cmd.error)
-+ return cmd.error;
-+ if (data.error)
-+ return data.error;
-+
-+ if (mmc_host_is_spi(card->host)) {
-+ /* host driver already reported errors */
-+ } else {
-+ if (cmd.resp[0] & R5_ERROR)
-+ return -EIO;
-+ if (cmd.resp[0] & R5_FUNCTION_NUMBER)
-+ return -EINVAL;
-+ if (cmd.resp[0] & R5_OUT_OF_RANGE)
-+ return -ERANGE;
-+ }
-+
-+ return 0;
-+}
-+
---- /dev/null
-+++ b/drivers/mmc/core/sdio_ops.h
-@@ -0,0 +1,22 @@
-+/*
-+ * linux/drivers/mmc/sdio_ops.c
-+ *
-+ * Copyright 2006-2007 Pierre Ossman
-+ *
-+ * This program is free software; you can redistribute it and/or modify
-+ * it under the terms of the GNU General Public License as published by
-+ * the Free Software Foundation; either version 2 of the License, or (at
-+ * your option) any later version.
-+ */
-+
-+#ifndef _MMC_SDIO_OPS_H
-+#define _MMC_SDIO_OPS_H
-+
-+int mmc_send_io_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr);
-+int mmc_io_rw_direct(struct mmc_card *card, int write, unsigned fn,
-+ unsigned addr, u8 in, u8* out);
-+int mmc_io_rw_extended(struct mmc_card *card, int write, unsigned fn,
-+ unsigned addr, int incr_addr, u8 *buf, unsigned blocks, unsigned blksz);
-+
-+#endif
-+
---- a/include/linux/mmc/card.h
-+++ b/include/linux/mmc/card.h
-@@ -55,7 +55,28 @@ struct sd_switch_caps {
- unsigned int hs_max_dtr;
- };
-
-+struct sdio_cccr {
-+ unsigned int sdio_vsn;
-+ unsigned int sd_vsn;
-+ unsigned int multi_block:1,
-+ low_speed:1,
-+ wide_bus:1,
-+ high_power:1,
-+ high_speed:1;
-+};
-+
-+struct sdio_cis {
-+ unsigned short vendor;
-+ unsigned short device;
-+ unsigned short blksize;
-+ unsigned int max_dtr;
-+};
-+
- struct mmc_host;
-+struct sdio_func;
-+struct sdio_func_tuple;
-+
-+#define SDIO_MAX_FUNCS 7
-
- /*
- * MMC device
-@@ -67,11 +88,13 @@ struct mmc_card {
- unsigned int type; /* card type */
- #define MMC_TYPE_MMC 0 /* MMC card */
- #define MMC_TYPE_SD 1 /* SD card */
-+#define MMC_TYPE_SDIO 2 /* SDIO card */
- unsigned int state; /* (our) card state */
- #define MMC_STATE_PRESENT (1<<0) /* present in sysfs */
- #define MMC_STATE_READONLY (1<<1) /* card is read-only */
- #define MMC_STATE_HIGHSPEED (1<<2) /* card is in high speed mode */
- #define MMC_STATE_BLOCKADDR (1<<3) /* card uses block-addressing */
-+
- u32 raw_cid[4]; /* raw card CID */
- u32 raw_csd[4]; /* raw card CSD */
- u32 raw_scr[2]; /* raw card SCR */
-@@ -80,10 +103,19 @@ struct mmc_card {
- struct mmc_ext_csd ext_csd; /* mmc v4 extended card specific */
- struct sd_scr scr; /* extra SD information */
- struct sd_switch_caps sw_caps; /* switch (CMD6) caps */
-+
-+ unsigned int sdio_funcs; /* number of SDIO functions */
-+ struct sdio_cccr cccr; /* common card info */
-+ struct sdio_cis cis; /* common tuple info */
-+ struct sdio_func *sdio_func[SDIO_MAX_FUNCS]; /* SDIO functions (devices) */
-+ unsigned num_info; /* number of info strings */
-+ const char **info; /* info strings */
-+ struct sdio_func_tuple *tuples; /* unknown common tuples */
- };
-
- #define mmc_card_mmc(c) ((c)->type == MMC_TYPE_MMC)
- #define mmc_card_sd(c) ((c)->type == MMC_TYPE_SD)
-+#define mmc_card_sdio(c) ((c)->type == MMC_TYPE_SDIO)
-
- #define mmc_card_present(c) ((c)->state & MMC_STATE_PRESENT)
- #define mmc_card_readonly(c) ((c)->state & MMC_STATE_READONLY)
---- a/include/linux/mmc/core.h
-+++ b/include/linux/mmc/core.h
-@@ -25,14 +25,20 @@ struct mmc_command {
- #define MMC_RSP_CRC (1 << 2) /* expect valid crc */
- #define MMC_RSP_BUSY (1 << 3) /* card may send busy */
- #define MMC_RSP_OPCODE (1 << 4) /* response contains opcode */
--#define MMC_CMD_MASK (3 << 5) /* command type */
-+
-+#define MMC_CMD_MASK (3 << 5) /* non-SPI command type */
- #define MMC_CMD_AC (0 << 5)
- #define MMC_CMD_ADTC (1 << 5)
- #define MMC_CMD_BC (2 << 5)
- #define MMC_CMD_BCR (3 << 5)
-
-+#define MMC_RSP_SPI_S1 (1 << 7) /* one status byte */
-+#define MMC_RSP_SPI_S2 (1 << 8) /* second byte */
-+#define MMC_RSP_SPI_B4 (1 << 9) /* four data bytes */
-+#define MMC_RSP_SPI_BUSY (1 << 10) /* card may send busy */
-+
- /*
-- * These are the response types, and correspond to valid bit
-+ * These are the native response types, and correspond to valid bit
- * patterns of the above flags. One additional valid pattern
- * is all zeros, which means we don't expect a response.
- */
-@@ -41,12 +47,30 @@ struct mmc_command {
- #define MMC_RSP_R1B (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE|MMC_RSP_BUSY)
- #define MMC_RSP_R2 (MMC_RSP_PRESENT|MMC_RSP_136|MMC_RSP_CRC)
- #define MMC_RSP_R3 (MMC_RSP_PRESENT)
-+#define MMC_RSP_R4 (MMC_RSP_PRESENT)
-+#define MMC_RSP_R5 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
- #define MMC_RSP_R6 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
- #define MMC_RSP_R7 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
-
- #define mmc_resp_type(cmd) ((cmd)->flags & (MMC_RSP_PRESENT|MMC_RSP_136|MMC_RSP_CRC|MMC_RSP_BUSY|MMC_RSP_OPCODE))
-
- /*
-+ * These are the SPI response types for MMC, SD, and SDIO cards.
-+ * Commands return R1, with maybe more info. Zero is an error type;
-+ * callers must always provide the appropriate MMC_RSP_SPI_Rx flags.
-+ */
-+#define MMC_RSP_SPI_R1 (MMC_RSP_SPI_S1)
-+#define MMC_RSP_SPI_R1B (MMC_RSP_SPI_S1|MMC_RSP_SPI_BUSY)
-+#define MMC_RSP_SPI_R2 (MMC_RSP_SPI_S1|MMC_RSP_SPI_S2)
-+#define MMC_RSP_SPI_R3 (MMC_RSP_SPI_S1|MMC_RSP_SPI_B4)
-+#define MMC_RSP_SPI_R4 (MMC_RSP_SPI_S1|MMC_RSP_SPI_B4)
-+#define MMC_RSP_SPI_R5 (MMC_RSP_SPI_S1|MMC_RSP_SPI_S2)
-+#define MMC_RSP_SPI_R7 (MMC_RSP_SPI_S1|MMC_RSP_SPI_B4)
-+
-+#define mmc_spi_resp_type(cmd) ((cmd)->flags & \
-+ (MMC_RSP_SPI_S1|MMC_RSP_SPI_BUSY|MMC_RSP_SPI_S2|MMC_RSP_SPI_B4))
-+
-+/*
- * These are the command types.
- */
- #define mmc_cmd_type(cmd) ((cmd)->flags & MMC_CMD_MASK)
-@@ -54,12 +78,19 @@ struct mmc_command {
- unsigned int retries; /* max number of retries */
- unsigned int error; /* command error */
-
--#define MMC_ERR_NONE 0
--#define MMC_ERR_TIMEOUT 1
--#define MMC_ERR_BADCRC 2
--#define MMC_ERR_FIFO 3
--#define MMC_ERR_FAILED 4
--#define MMC_ERR_INVALID 5
-+/*
-+ * Standard errno values are used for errors, but some have specific
-+ * meaning in the MMC layer:
-+ *
-+ * ETIMEDOUT Card took too long to respond
-+ * EILSEQ Basic format problem with the received or sent data
-+ * (e.g. CRC check failed, incorrect opcode in response
-+ * or bad end bit)
-+ * EINVAL Request cannot be performed because of restrictions
-+ * in hardware and/or the driver
-+ * ENOMEDIUM Host can determine that the slot is empty and is
-+ * actively failing requests
-+ */
-
- struct mmc_data *data; /* data segment associated with cmd */
- struct mmc_request *mrq; /* associated request */
-@@ -76,7 +107,6 @@ struct mmc_data {
- #define MMC_DATA_WRITE (1 << 8)
- #define MMC_DATA_READ (1 << 9)
- #define MMC_DATA_STREAM (1 << 10)
--#define MMC_DATA_MULTI (1 << 11)
-
- unsigned int bytes_xfered;
-
-@@ -104,9 +134,20 @@ extern int mmc_wait_for_cmd(struct mmc_h
- extern int mmc_wait_for_app_cmd(struct mmc_host *, struct mmc_card *,
- struct mmc_command *, int);
-
--extern void mmc_set_data_timeout(struct mmc_data *, const struct mmc_card *, int);
-+extern void mmc_set_data_timeout(struct mmc_data *, const struct mmc_card *);
-
--extern void mmc_claim_host(struct mmc_host *host);
-+extern int __mmc_claim_host(struct mmc_host *host, atomic_t *abort);
- extern void mmc_release_host(struct mmc_host *host);
-
-+/**
-+ * mmc_claim_host - exclusively claim a host
-+ * @host: mmc host to claim
-+ *
-+ * Claim a host for a set of operations.
-+ */
-+static inline void mmc_claim_host(struct mmc_host *host)
-+{
-+ __mmc_claim_host(host, NULL);
-+}
-+
- #endif
---- a/include/linux/mmc/host.h
-+++ b/include/linux/mmc/host.h
-@@ -10,6 +10,8 @@
- #ifndef LINUX_MMC_HOST_H
- #define LINUX_MMC_HOST_H
-
-+#include <linux/leds.h>
-+
- #include <linux/mmc/core.h>
-
- struct mmc_ios {
-@@ -51,6 +53,7 @@ struct mmc_host_ops {
- void (*request)(struct mmc_host *host, struct mmc_request *req);
- void (*set_ios)(struct mmc_host *host, struct mmc_ios *ios);
- int (*get_ro)(struct mmc_host *host);
-+ void (*enable_sdio_irq)(struct mmc_host *host, int enable);
- };
-
- struct mmc_card;
-@@ -87,9 +90,10 @@ struct mmc_host {
-
- #define MMC_CAP_4_BIT_DATA (1 << 0) /* Can the host do 4 bit transfers */
- #define MMC_CAP_MULTIWRITE (1 << 1) /* Can accurately report bytes sent to card on error */
--#define MMC_CAP_BYTEBLOCK (1 << 2) /* Can do non-log2 block sizes */
--#define MMC_CAP_MMC_HIGHSPEED (1 << 3) /* Can do MMC high-speed timing */
--#define MMC_CAP_SD_HIGHSPEED (1 << 4) /* Can do SD high-speed timing */
-+#define MMC_CAP_MMC_HIGHSPEED (1 << 2) /* Can do MMC high-speed timing */
-+#define MMC_CAP_SD_HIGHSPEED (1 << 3) /* Can do SD high-speed timing */
-+#define MMC_CAP_SDIO_IRQ (1 << 4) /* Can signal pending SDIO IRQs */
-+#define MMC_CAP_SPI (1 << 5) /* Talks only SPI protocols */
-
- /* host specific block data */
- unsigned int max_seg_size; /* see blk_queue_max_segment_size */
-@@ -106,23 +110,30 @@ struct mmc_host {
- struct mmc_ios ios; /* current io bus settings */
- u32 ocr; /* the current OCR setting */
-
-- unsigned int mode; /* current card mode of host */
--#define MMC_MODE_MMC 0
--#define MMC_MODE_SD 1
-+ /* group bitfields together to minimize padding */
-+ unsigned int use_spi_crc:1;
-+ unsigned int claimed:1; /* host exclusively claimed */
-+ unsigned int bus_dead:1; /* bus has been released */
-+#ifdef CONFIG_MMC_DEBUG
-+ unsigned int removed:1; /* host is being removed */
-+#endif
-
- struct mmc_card *card; /* device attached to this host */
-
- wait_queue_head_t wq;
-- unsigned int claimed:1; /* host exclusively claimed */
-
- struct delayed_work detect;
--#ifdef CONFIG_MMC_DEBUG
-- unsigned int removed:1; /* host is being removed */
--#endif
-
- const struct mmc_bus_ops *bus_ops; /* current bus driver */
- unsigned int bus_refs; /* reference counter */
-- unsigned int bus_dead:1; /* bus has been released */
-+
-+ unsigned int sdio_irqs;
-+ struct task_struct *sdio_irq_thread;
-+ atomic_t sdio_irq_thread_abort;
-+
-+#ifdef CONFIG_LEDS_TRIGGERS
-+ struct led_trigger *led; /* activity led */
-+#endif
-
- unsigned long private[0] ____cacheline_aligned;
- };
-@@ -137,6 +148,8 @@ static inline void *mmc_priv(struct mmc_
- return (void *)host->private;
- }
-
-+#define mmc_host_is_spi(host) ((host)->caps & MMC_CAP_SPI)
-+
- #define mmc_dev(x) ((x)->parent)
- #define mmc_classdev(x) (&(x)->class_dev)
- #define mmc_hostname(x) ((x)->class_dev.bus_id)
-@@ -147,5 +160,11 @@ extern int mmc_resume_host(struct mmc_ho
- extern void mmc_detect_change(struct mmc_host *, unsigned long delay);
- extern void mmc_request_done(struct mmc_host *, struct mmc_request *);
-
-+static inline void mmc_signal_sdio_irq(struct mmc_host *host)
-+{
-+ host->ops->enable_sdio_irq(host, 0);
-+ wake_up_process(host->sdio_irq_thread);
-+}
-+
- #endif
-
---- a/include/linux/mmc/mmc.h
-+++ b/include/linux/mmc/mmc.h
-@@ -27,7 +27,7 @@
-
- /* Standard MMC commands (4.1) type argument response */
- /* class 1 */
--#define MMC_GO_IDLE_STATE 0 /* bc */
-+#define MMC_GO_IDLE_STATE 0 /* bc */
- #define MMC_SEND_OP_COND 1 /* bcr [31:0] OCR R3 */
- #define MMC_ALL_SEND_CID 2 /* bcr R2 */
- #define MMC_SET_RELATIVE_ADDR 3 /* ac [31:16] RCA R1 */
-@@ -39,8 +39,10 @@
- #define MMC_SEND_CID 10 /* ac [31:16] RCA R2 */
- #define MMC_READ_DAT_UNTIL_STOP 11 /* adtc [31:0] dadr R1 */
- #define MMC_STOP_TRANSMISSION 12 /* ac R1b */
--#define MMC_SEND_STATUS 13 /* ac [31:16] RCA R1 */
-+#define MMC_SEND_STATUS 13 /* ac [31:16] RCA R1 */
- #define MMC_GO_INACTIVE_STATE 15 /* ac [31:16] RCA */
-+#define MMC_SPI_READ_OCR 58 /* spi spi_R3 */
-+#define MMC_SPI_CRC_ON_OFF 59 /* spi [0:0] flag spi_R1 */
-
- /* class 2 */
- #define MMC_SET_BLOCKLEN 16 /* ac [31:0] block len R1 */
-@@ -90,15 +92,15 @@
- */
-
- /*
-- MMC status in R1
-+ MMC status in R1, for native mode (SPI bits are different)
- Type
-- e : error bit
-+ e : error bit
- s : status bit
- r : detected and set for the actual command response
- x : detected and set during command execution. the host must poll
- the card by sending status command in order to read these bits.
- Clear condition
-- a : according to the card state
-+ a : according to the card state
- b : always related to the previous command. Reception of
- a valid command will clear it (with a delay of one command)
- c : clear by read
-@@ -124,10 +126,33 @@
- #define R1_CARD_ECC_DISABLED (1 << 14) /* sx, a */
- #define R1_ERASE_RESET (1 << 13) /* sr, c */
- #define R1_STATUS(x) (x & 0xFFFFE000)
--#define R1_CURRENT_STATE(x) ((x & 0x00001E00) >> 9) /* sx, b (4 bits) */
-+#define R1_CURRENT_STATE(x) ((x & 0x00001E00) >> 9) /* sx, b (4 bits) */
- #define R1_READY_FOR_DATA (1 << 8) /* sx, a */
- #define R1_APP_CMD (1 << 5) /* sr, c */
-
-+/*
-+ * MMC/SD in SPI mode reports R1 status always, and R2 for SEND_STATUS
-+ * R1 is the low order byte; R2 is the next highest byte, when present.
-+ */
-+#define R1_SPI_IDLE (1 << 0)
-+#define R1_SPI_ERASE_RESET (1 << 1)
-+#define R1_SPI_ILLEGAL_COMMAND (1 << 2)
-+#define R1_SPI_COM_CRC (1 << 3)
-+#define R1_SPI_ERASE_SEQ (1 << 4)
-+#define R1_SPI_ADDRESS (1 << 5)
-+#define R1_SPI_PARAMETER (1 << 6)
-+/* R1 bit 7 is always zero */
-+#define R2_SPI_CARD_LOCKED (1 << 8)
-+#define R2_SPI_WP_ERASE_SKIP (1 << 9) /* or lock/unlock fail */
-+#define R2_SPI_LOCK_UNLOCK_FAIL R2_SPI_WP_ERASE_SKIP
-+#define R2_SPI_ERROR (1 << 10)
-+#define R2_SPI_CC_ERROR (1 << 11)
-+#define R2_SPI_CARD_ECC_ERROR (1 << 12)
-+#define R2_SPI_WP_VIOLATION (1 << 13)
-+#define R2_SPI_ERASE_PARAM (1 << 14)
-+#define R2_SPI_OUT_OF_RANGE (1 << 15) /* or CSD overwrite */
-+#define R2_SPI_CSD_OVERWRITE R2_SPI_OUT_OF_RANGE
-+
- /* These are unpacked versions of the actual responses */
-
- struct _mmc_csd {
-@@ -182,6 +207,7 @@ struct _mmc_csd {
- */
- #define CCC_BASIC (1<<0) /* (0) Basic protocol functions */
- /* (CMD0,1,2,3,4,7,9,10,12,13,15) */
-+ /* (and for SPI, CMD58,59) */
- #define CCC_STREAM_READ (1<<1) /* (1) Stream read commands */
- /* (CMD11) */
- #define CCC_BLOCK_READ (1<<2) /* (2) Block read commands */
-@@ -227,6 +253,7 @@ struct _mmc_csd {
- #define EXT_CSD_BUS_WIDTH 183 /* R/W */
- #define EXT_CSD_HS_TIMING 185 /* R/W */
- #define EXT_CSD_CARD_TYPE 196 /* RO */
-+#define EXT_CSD_REV 192 /* RO */
- #define EXT_CSD_SEC_CNT 212 /* RO, 4 bytes */
-
- /*
---- /dev/null
-+++ b/include/linux/mmc/sdio.h
-@@ -0,0 +1,159 @@
-+/*
-+ * include/linux/mmc/sdio.h
-+ *
-+ * Copyright 2006-2007 Pierre Ossman
-+ *
-+ * This program is free software; you can redistribute it and/or modify
-+ * it under the terms of the GNU General Public License as published by
-+ * the Free Software Foundation; either version 2 of the License, or (at
-+ * your option) any later version.
-+ */
-+
-+#ifndef MMC_SDIO_H
-+#define MMC_SDIO_H
-+
-+/* SDIO commands type argument response */
-+#define SD_IO_SEND_OP_COND 5 /* bcr [23:0] OCR R4 */
-+#define SD_IO_RW_DIRECT 52 /* ac [31:0] See below R5 */
-+#define SD_IO_RW_EXTENDED 53 /* adtc [31:0] See below R5 */
-+
-+/*
-+ * SD_IO_RW_DIRECT argument format:
-+ *
-+ * [31] R/W flag
-+ * [30:28] Function number
-+ * [27] RAW flag
-+ * [25:9] Register address
-+ * [7:0] Data
-+ */
-+
-+/*
-+ * SD_IO_RW_EXTENDED argument format:
-+ *
-+ * [31] R/W flag
-+ * [30:28] Function number
-+ * [27] Block mode
-+ * [26] Increment address
-+ * [25:9] Register address
-+ * [8:0] Byte/block count
-+ */
-+
-+/*
-+ SDIO status in R5
-+ Type
-+ e : error bit
-+ s : status bit
-+ r : detected and set for the actual command response
-+ x : detected and set during command execution. the host must poll
-+ the card by sending status command in order to read these bits.
-+ Clear condition
-+ a : according to the card state
-+ b : always related to the previous command. Reception of
-+ a valid command will clear it (with a delay of one command)
-+ c : clear by read
-+ */
-+
-+#define R5_COM_CRC_ERROR (1 << 15) /* er, b */
-+#define R5_ILLEGAL_COMMAND (1 << 14) /* er, b */
-+#define R5_ERROR (1 << 11) /* erx, c */
-+#define R5_FUNCTION_NUMBER (1 << 9) /* er, c */
-+#define R5_OUT_OF_RANGE (1 << 8) /* er, c */
-+#define R5_STATUS(x) (x & 0xCB00)
-+#define R5_IO_CURRENT_STATE(x) ((x & 0x3000) >> 12) /* s, b */
-+
-+/*
-+ * Card Common Control Registers (CCCR)
-+ */
-+
-+#define SDIO_CCCR_CCCR 0x00
-+
-+#define SDIO_CCCR_REV_1_00 0 /* CCCR/FBR Version 1.00 */
-+#define SDIO_CCCR_REV_1_10 1 /* CCCR/FBR Version 1.10 */
-+#define SDIO_CCCR_REV_1_20 2 /* CCCR/FBR Version 1.20 */
-+
-+#define SDIO_SDIO_REV_1_00 0 /* SDIO Spec Version 1.00 */
-+#define SDIO_SDIO_REV_1_10 1 /* SDIO Spec Version 1.10 */
-+#define SDIO_SDIO_REV_1_20 2 /* SDIO Spec Version 1.20 */
-+#define SDIO_SDIO_REV_2_00 3 /* SDIO Spec Version 2.00 */
-+
-+#define SDIO_CCCR_SD 0x01
-+
-+#define SDIO_SD_REV_1_01 0 /* SD Physical Spec Version 1.01 */
-+#define SDIO_SD_REV_1_10 1 /* SD Physical Spec Version 1.10 */
-+#define SDIO_SD_REV_2_00 2 /* SD Physical Spec Version 2.00 */
-+
-+#define SDIO_CCCR_IOEx 0x02
-+#define SDIO_CCCR_IORx 0x03
-+
-+#define SDIO_CCCR_IENx 0x04 /* Function/Master Interrupt Enable */
-+#define SDIO_CCCR_INTx 0x05 /* Function Interrupt Pending */
-+
-+#define SDIO_CCCR_ABORT 0x06 /* function abort/card reset */
-+
-+#define SDIO_CCCR_IF 0x07 /* bus interface controls */
-+
-+#define SDIO_BUS_WIDTH_1BIT 0x00
-+#define SDIO_BUS_WIDTH_4BIT 0x02
-+
-+#define SDIO_BUS_CD_DISABLE 0x80 /* disable pull-up on DAT3 (pin 1) */
-+
-+#define SDIO_CCCR_CAPS 0x08
-+
-+#define SDIO_CCCR_CAP_SDC 0x01 /* can do CMD52 while data transfer */
-+#define SDIO_CCCR_CAP_SMB 0x02 /* can do multi-block xfers (CMD53) */
-+#define SDIO_CCCR_CAP_SRW 0x04 /* supports read-wait protocol */
-+#define SDIO_CCCR_CAP_SBS 0x08 /* supports suspend/resume */
-+#define SDIO_CCCR_CAP_S4MI 0x10 /* interrupt during 4-bit CMD53 */
-+#define SDIO_CCCR_CAP_E4MI 0x20 /* enable ints during 4-bit CMD53 */
-+#define SDIO_CCCR_CAP_LSC 0x40 /* low speed card */
-+#define SDIO_CCCR_CAP_4BLS 0x80 /* 4 bit low speed card */
-+
-+#define SDIO_CCCR_CIS 0x09 /* common CIS pointer (3 bytes) */
-+
-+/* Following 4 regs are valid only if SBS is set */
-+#define SDIO_CCCR_SUSPEND 0x0c
-+#define SDIO_CCCR_SELx 0x0d
-+#define SDIO_CCCR_EXECx 0x0e
-+#define SDIO_CCCR_READYx 0x0f
-+
-+#define SDIO_CCCR_BLKSIZE 0x10
-+
-+#define SDIO_CCCR_POWER 0x12
-+
-+#define SDIO_POWER_SMPC 0x01 /* Supports Master Power Control */
-+#define SDIO_POWER_EMPC 0x02 /* Enable Master Power Control */
-+
-+#define SDIO_CCCR_SPEED 0x13
-+
-+#define SDIO_SPEED_SHS 0x01 /* Supports High-Speed mode */
-+#define SDIO_SPEED_EHS 0x02 /* Enable High-Speed mode */
-+
-+/*
-+ * Function Basic Registers (FBR)
-+ */
-+
-+#define SDIO_FBR_BASE(f) ((f) * 0x100) /* base of function f's FBRs */
-+
-+#define SDIO_FBR_STD_IF 0x00
-+
-+#define SDIO_FBR_SUPPORTS_CSA 0x40 /* supports Code Storage Area */
-+#define SDIO_FBR_ENABLE_CSA 0x80 /* enable Code Storage Area */
-+
-+#define SDIO_FBR_STD_IF_EXT 0x01
-+
-+#define SDIO_FBR_POWER 0x02
-+
-+#define SDIO_FBR_POWER_SPS 0x01 /* Supports Power Selection */
-+#define SDIO_FBR_POWER_EPS 0x02 /* Enable (low) Power Selection */
-+
-+#define SDIO_FBR_CIS 0x09 /* CIS pointer (3 bytes) */
-+
-+
-+#define SDIO_FBR_CSA 0x0C /* CSA pointer (3 bytes) */
-+
-+#define SDIO_FBR_CSA_DATA 0x0F
-+
-+#define SDIO_FBR_BLKSIZE 0x10 /* block size (2 bytes) */
-+
-+#endif
-+
---- /dev/null
-+++ b/include/linux/mmc/sdio_func.h
-@@ -0,0 +1,153 @@
-+/*
-+ * include/linux/mmc/sdio_func.h
-+ *
-+ * Copyright 2007 Pierre Ossman
-+ *
-+ * This program is free software; you can redistribute it and/or modify
-+ * it under the terms of the GNU General Public License as published by
-+ * the Free Software Foundation; either version 2 of the License, or (at
-+ * your option) any later version.
-+ */
-+
-+#ifndef MMC_SDIO_FUNC_H
-+#define MMC_SDIO_FUNC_H
-+
-+#include <linux/device.h>
-+#include <linux/mod_devicetable.h>
-+
-+struct mmc_card;
-+struct sdio_func;
-+
-+typedef void (sdio_irq_handler_t)(struct sdio_func *);
-+
-+/*
-+ * SDIO function CIS tuple (unknown to the core)
-+ */
-+struct sdio_func_tuple {
-+ struct sdio_func_tuple *next;
-+ unsigned char code;
-+ unsigned char size;
-+ unsigned char data[0];
-+};
-+
-+/*
-+ * SDIO function devices
-+ */
-+struct sdio_func {
-+ struct mmc_card *card; /* the card this device belongs to */
-+ struct device dev; /* the device */
-+ sdio_irq_handler_t *irq_handler; /* IRQ callback */
-+ unsigned int num; /* function number */
-+
-+ unsigned char class; /* standard interface class */
-+ unsigned short vendor; /* vendor id */
-+ unsigned short device; /* device id */
-+
-+ unsigned max_blksize; /* maximum block size */
-+ unsigned cur_blksize; /* current block size */
-+
-+ unsigned int state; /* function state */
-+#define SDIO_STATE_PRESENT (1<<0) /* present in sysfs */
-+
-+ u8 tmpbuf[4]; /* DMA:able scratch buffer */
-+
-+ unsigned num_info; /* number of info strings */
-+ const char **info; /* info strings */
-+
-+ struct sdio_func_tuple *tuples;
-+};
-+
-+#define sdio_func_present(f) ((f)->state & SDIO_STATE_PRESENT)
-+
-+#define sdio_func_set_present(f) ((f)->state |= SDIO_STATE_PRESENT)
-+
-+#define sdio_func_id(f) ((f)->dev.bus_id)
-+
-+#define sdio_get_drvdata(f) dev_get_drvdata(&(f)->dev)
-+#define sdio_set_drvdata(f,d) dev_set_drvdata(&(f)->dev, d)
-+
-+/*
-+ * SDIO function device driver
-+ */
-+struct sdio_driver {
-+ char *name;
-+ const struct sdio_device_id *id_table;
-+
-+ int (*probe)(struct sdio_func *, const struct sdio_device_id *);
-+ void (*remove)(struct sdio_func *);
-+
-+ struct device_driver drv;
-+};
-+
-+/**
-+ * SDIO_DEVICE - macro used to describe a specific SDIO device
-+ * @vend: the 16 bit manufacturer code
-+ * @dev: the 16 bit function id
-+ *
-+ * This macro is used to create a struct sdio_device_id that matches a
-+ * specific device. The class field will be set to SDIO_ANY_ID.
-+ */
-+#define SDIO_DEVICE(vend,dev) \
-+ .class = SDIO_ANY_ID, \
-+ .vendor = (vend), .device = (dev)
-+
-+/**
-+ * SDIO_DEVICE_CLASS - macro used to describe a specific SDIO device class
-+ * @dev_class: the 8 bit standard interface code
-+ *
-+ * This macro is used to create a struct sdio_device_id that matches a
-+ * specific standard SDIO function type. The vendor and device fields will
-+ * be set to SDIO_ANY_ID.
-+ */
-+#define SDIO_DEVICE_CLASS(dev_class) \
-+ .class = (dev_class), \
-+ .vendor = SDIO_ANY_ID, .device = SDIO_ANY_ID
-+
-+extern int sdio_register_driver(struct sdio_driver *);
-+extern void sdio_unregister_driver(struct sdio_driver *);
-+
-+/*
-+ * SDIO I/O operations
-+ */
-+extern void sdio_claim_host(struct sdio_func *func);
-+extern void sdio_release_host(struct sdio_func *func);
-+
-+extern int sdio_enable_func(struct sdio_func *func);
-+extern int sdio_disable_func(struct sdio_func *func);
-+
-+extern int sdio_set_block_size(struct sdio_func *func, unsigned blksz);
-+
-+extern int sdio_claim_irq(struct sdio_func *func, sdio_irq_handler_t *handler);
-+extern int sdio_release_irq(struct sdio_func *func);
-+
-+extern unsigned char sdio_readb(struct sdio_func *func,
-+ unsigned int addr, int *err_ret);
-+extern unsigned short sdio_readw(struct sdio_func *func,
-+ unsigned int addr, int *err_ret);
-+extern unsigned long sdio_readl(struct sdio_func *func,
-+ unsigned int addr, int *err_ret);
-+
-+extern int sdio_memcpy_fromio(struct sdio_func *func, void *dst,
-+ unsigned int addr, int count);
-+extern int sdio_readsb(struct sdio_func *func, void *dst,
-+ unsigned int addr, int count);
-+
-+extern void sdio_writeb(struct sdio_func *func, unsigned char b,
-+ unsigned int addr, int *err_ret);
-+extern void sdio_writew(struct sdio_func *func, unsigned short b,
-+ unsigned int addr, int *err_ret);
-+extern void sdio_writel(struct sdio_func *func, unsigned long b,
-+ unsigned int addr, int *err_ret);
-+
-+extern int sdio_memcpy_toio(struct sdio_func *func, unsigned int addr,
-+ void *src, int count);
-+extern int sdio_writesb(struct sdio_func *func, unsigned int addr,
-+ void *src, int count);
-+
-+extern unsigned char sdio_f0_readb(struct sdio_func *func,
-+ unsigned int addr, int *err_ret);
-+extern void sdio_f0_writeb(struct sdio_func *func, unsigned char b,
-+ unsigned int addr, int *err_ret);
-+
-+#endif
-+
---- /dev/null
-+++ b/include/linux/mmc/sdio_ids.h
-@@ -0,0 +1,29 @@
-+/*
-+ * SDIO Classes, Interface Types, Manufacturer IDs, etc.
-+ */
-+
-+#ifndef MMC_SDIO_IDS_H
-+#define MMC_SDIO_IDS_H
-+
-+/*
-+ * Standard SDIO Function Interfaces
-+ */
-+
-+#define SDIO_CLASS_NONE 0x00 /* Not a SDIO standard interface */
-+#define SDIO_CLASS_UART 0x01 /* standard UART interface */
-+#define SDIO_CLASS_BT_A 0x02 /* Type-A BlueTooth std interface */
-+#define SDIO_CLASS_BT_B 0x03 /* Type-B BlueTooth std interface */
-+#define SDIO_CLASS_GPS 0x04 /* GPS standard interface */
-+#define SDIO_CLASS_CAMERA 0x05 /* Camera standard interface */
-+#define SDIO_CLASS_PHS 0x06 /* PHS standard interface */
-+#define SDIO_CLASS_WLAN 0x07 /* WLAN interface */
-+#define SDIO_CLASS_ATA 0x08 /* Embedded SDIO-ATA std interface */
-+
-+/*
-+ * Vendors and devices. Sort key: vendor first, device next.
-+ */
-+
-+#define SDIO_VENDOR_ID_MARVELL 0x02df
-+#define SDIO_DEVICE_ID_MARVELL_LIBERTAS 0x9103
-+
-+#endif
---- a/include/linux/mod_devicetable.h
-+++ b/include/linux/mod_devicetable.h
-@@ -22,6 +22,18 @@ struct pci_device_id {
- };
-
-
-+/* SDIO */
-+
-+#define SDIO_ANY_ID (~0)
-+
-+struct sdio_device_id {
-+ __u8 class; /* Standard interface or SDIO_ANY_ID */
-+ __u16 vendor; /* Vendor or SDIO_ANY_ID */
-+ __u16 device; /* Device ID or SDIO_ANY_ID */
-+ kernel_ulong_t driver_data; /* Data private to the driver */
-+};
-+
-+
- #define IEEE1394_MATCH_VENDOR_ID 0x0001
- #define IEEE1394_MATCH_MODEL_ID 0x0002
- #define IEEE1394_MATCH_SPECIFIER_ID 0x0004
---- a/drivers/mmc/card/Kconfig
-+++ b/drivers/mmc/card/Kconfig
-@@ -32,3 +32,10 @@ config MMC_BLOCK_BOUNCE
-
- If unsure, say Y here.
-
-+config SDIO_UART
-+ tristate "SDIO UART/GPS class support"
-+ depends on MMC
-+ help
-+ SDIO function driver for SDIO cards that implements the UART
-+ class, as well as the GPS class which appears like a UART.
-+
---- a/drivers/mmc/card/Makefile
-+++ b/drivers/mmc/card/Makefile
-@@ -9,3 +9,5 @@ endif
- obj-$(CONFIG_MMC_BLOCK) += mmc_block.o
- mmc_block-objs := block.o queue.o
-
-+obj-$(CONFIG_SDIO_UART) += sdio_uart.o
-+
---- a/drivers/mmc/card/block.c
-+++ b/drivers/mmc/card/block.c
-@@ -44,6 +44,9 @@
- * max 8 partitions per card
- */
- #define MMC_SHIFT 3
-+#define MMC_NUM_MINORS (256 >> MMC_SHIFT)
-+
-+static unsigned long dev_use[MMC_NUM_MINORS/(8*sizeof(unsigned long))];
-
- /*
- * There is one mmc_blk_data per slot.
-@@ -80,6 +83,9 @@ static void mmc_blk_put(struct mmc_blk_d
- mutex_lock(&open_lock);
- md->usage--;
- if (md->usage == 0) {
-+ int devidx = md->disk->first_minor >> MMC_SHIFT;
-+ __clear_bit(devidx, dev_use);
-+
- put_disk(md->disk);
- kfree(md);
- }
-@@ -151,17 +157,19 @@ static u32 mmc_sd_num_wr_blocks(struct m
-
- cmd.opcode = MMC_APP_CMD;
- cmd.arg = card->rca << 16;
-- cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
-+ cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_AC;
-
- err = mmc_wait_for_cmd(card->host, &cmd, 0);
-- if ((err != MMC_ERR_NONE) || !(cmd.resp[0] & R1_APP_CMD))
-+ if (err)
-+ return (u32)-1;
-+ if (!mmc_host_is_spi(card->host) && !(cmd.resp[0] & R1_APP_CMD))
- return (u32)-1;
-
- memset(&cmd, 0, sizeof(struct mmc_command));
-
- cmd.opcode = SD_APP_SEND_NUM_WR_BLKS;
- cmd.arg = 0;
-- cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
-+ cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_ADTC;
-
- memset(&data, 0, sizeof(struct mmc_data));
-
-@@ -192,7 +200,7 @@ static u32 mmc_sd_num_wr_blocks(struct m
-
- mmc_wait_for_req(card->host, &mrq);
-
-- if (cmd.error != MMC_ERR_NONE || data.error != MMC_ERR_NONE)
-+ if (cmd.error || data.error)
- return (u32)-1;
-
- blocks = ntohl(blocks);
-@@ -220,17 +228,15 @@ static int mmc_blk_issue_rq(struct mmc_q
- brq.cmd.arg = req->sector;
- if (!mmc_card_blockaddr(card))
- brq.cmd.arg <<= 9;
-- brq.cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
-+ brq.cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_ADTC;
- brq.data.blksz = 1 << md->block_bits;
- brq.stop.opcode = MMC_STOP_TRANSMISSION;
- brq.stop.arg = 0;
-- brq.stop.flags = MMC_RSP_R1B | MMC_CMD_AC;
-+ brq.stop.flags = MMC_RSP_SPI_R1B | MMC_RSP_R1B | MMC_CMD_AC;
- brq.data.blocks = req->nr_sectors >> (md->block_bits - 9);
- if (brq.data.blocks > card->host->max_blk_count)
- brq.data.blocks = card->host->max_blk_count;
-
-- mmc_set_data_timeout(&brq.data, card, rq_data_dir(req) != READ);
--
- /*
- * If the host doesn't support multiple block writes, force
- * block writes to single block. SD cards are excepted from
-@@ -243,8 +249,12 @@ static int mmc_blk_issue_rq(struct mmc_q
- brq.data.blocks = 1;
-
- if (brq.data.blocks > 1) {
-- brq.data.flags |= MMC_DATA_MULTI;
-- brq.mrq.stop = &brq.stop;
-+ /* SPI multiblock writes terminate using a special
-+ * token, not a STOP_TRANSMISSION request.
-+ */
-+ if (!mmc_host_is_spi(card->host)
-+ || rq_data_dir(req) == READ)
-+ brq.mrq.stop = &brq.stop;
- readcmd = MMC_READ_MULTIPLE_BLOCK;
- writecmd = MMC_WRITE_MULTIPLE_BLOCK;
- } else {
-@@ -261,6 +271,8 @@ static int mmc_blk_issue_rq(struct mmc_q
- brq.data.flags |= MMC_DATA_WRITE;
- }
-
-+ mmc_set_data_timeout(&brq.data, card);
-+
- brq.data.sg = mq->sg;
- brq.data.sg_len = mmc_queue_map_sg(mq);
-
-@@ -302,7 +314,7 @@ static int mmc_blk_issue_rq(struct mmc_q
- goto cmd_err;
- }
-
-- if (rq_data_dir(req) != READ) {
-+ if (!mmc_host_is_spi(card->host) && rq_data_dir(req) != READ) {
- do {
- int err;
-
-@@ -315,7 +327,13 @@ static int mmc_blk_issue_rq(struct mmc_q
- req->rq_disk->disk_name, err);
- goto cmd_err;
- }
-- } while (!(cmd.resp[0] & R1_READY_FOR_DATA));
-+ /*
-+ * Some cards mishandle the status bits,
-+ * so make sure to check both the busy
-+ * indication and the card state.
-+ */
-+ } while (!(cmd.resp[0] & R1_READY_FOR_DATA) ||
-+ (R1_CURRENT_STATE(cmd.resp[0]) == 7));
-
- #if 0
- if (cmd.resp[0] & ~0x00000900)
-@@ -394,9 +412,6 @@ static int mmc_blk_issue_rq(struct mmc_q
- return 0;
- }
-
--#define MMC_NUM_MINORS (256 >> MMC_SHIFT)
--
--static unsigned long dev_use[MMC_NUM_MINORS/(8*sizeof(unsigned long))];
-
- static inline int mmc_blk_readonly(struct mmc_card *card)
- {
-@@ -510,7 +525,7 @@ mmc_blk_set_blksize(struct mmc_blk_data
- mmc_claim_host(card->host);
- cmd.opcode = MMC_SET_BLOCKLEN;
- cmd.arg = 1 << md->block_bits;
-- cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
-+ cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_AC;
- err = mmc_wait_for_cmd(card->host, &cmd, 5);
- mmc_release_host(card->host);
-
-@@ -562,17 +577,12 @@ static void mmc_blk_remove(struct mmc_ca
- struct mmc_blk_data *md = mmc_get_drvdata(card);
-
- if (md) {
-- int devidx;
--
- /* Stop new requests from getting into the queue */
- del_gendisk(md->disk);
-
- /* Then flush out any already in there */
- mmc_cleanup_queue(&md->queue);
-
-- devidx = md->disk->first_minor >> MMC_SHIFT;
-- __clear_bit(devidx, dev_use);
--
- mmc_blk_put(md);
- }
- mmc_set_drvdata(card, NULL);
---- a/drivers/mmc/card/queue.c
-+++ b/drivers/mmc/card/queue.c
-@@ -13,6 +13,7 @@
- #include <linux/blkdev.h>
- #include <linux/freezer.h>
- #include <linux/kthread.h>
-+#include <linux/scatterlist.h>
-
- #include <linux/mmc/card.h>
- #include <linux/mmc/host.h>
-@@ -22,6 +23,12 @@
-
- #define MMC_QUEUE_SUSPENDED (1 << 0)
-
-+#define sg_init_table(sg, n) do { \
-+ memset(sg, 0, sizeof(*(sg)) * (n)); \
-+} while (0)
-+
-+#define sg_virt(sg) (page_address((sg)->page) + (sg)->offset)
-+
- /*
- * Prepare a MMC request. This just filters out odd stuff.
- */
-@@ -159,6 +166,7 @@ int mmc_init_queue(struct mmc_queue *mq,
- ret = -ENOMEM;
- goto cleanup_queue;
- }
-+ sg_init_table(mq->sg, 1);
-
- mq->bounce_sg = kmalloc(sizeof(struct scatterlist) *
- bouncesz / 512, GFP_KERNEL);
-@@ -166,6 +174,7 @@ int mmc_init_queue(struct mmc_queue *mq,
- ret = -ENOMEM;
- goto cleanup_queue;
- }
-+ sg_init_table(mq->bounce_sg, bouncesz / 512);
- }
- }
- #endif
-@@ -183,6 +192,7 @@ int mmc_init_queue(struct mmc_queue *mq,
- ret = -ENOMEM;
- goto cleanup_queue;
- }
-+ sg_init_table(mq->sg, host->max_phys_segs);
- }
-
- init_MUTEX(&mq->thread_sem);
-@@ -302,12 +312,12 @@ static void copy_sg(struct scatterlist *
- BUG_ON(dst_len == 0);
-
- if (dst_size == 0) {
-- dst_buf = page_address(dst->page) + dst->offset;
-+ dst_buf = sg_virt(dst);
- dst_size = dst->length;
- }
-
- if (src_size == 0) {
-- src_buf = page_address(src->page) + src->offset;
-+ src_buf = sg_virt(src);
- src_size = src->length;
- }
-
-@@ -353,9 +363,7 @@ unsigned int mmc_queue_map_sg(struct mmc
- return 1;
- }
-
-- mq->sg[0].page = virt_to_page(mq->bounce_buf);
-- mq->sg[0].offset = offset_in_page(mq->bounce_buf);
-- mq->sg[0].length = 0;
-+ sg_init_one(mq->sg, mq->bounce_buf, 0);
-
- while (sg_len) {
- mq->sg[0].length += mq->bounce_sg[sg_len - 1].length;
---- /dev/null
-+++ b/drivers/mmc/card/sdio_uart.c
-@@ -0,0 +1,1158 @@
-+/*
-+ * linux/drivers/mmc/card/sdio_uart.c - SDIO UART/GPS driver
-+ *
-+ * Based on drivers/serial/8250.c and drivers/serial/serial_core.c
-+ * by Russell King.
-+ *
-+ * Author: Nicolas Pitre
-+ * Created: June 15, 2007
-+ * Copyright: MontaVista Software, Inc.
-+ *
-+ * This program is free software; you can redistribute it and/or modify
-+ * it under the terms of the GNU General Public License as published by
-+ * the Free Software Foundation; either version 2 of the License, or (at
-+ * your option) any later version.
-+ */
-+
-+/*
-+ * Note: Although this driver assumes a 16550A-like UART implementation,
-+ * it is not possible to leverage the common 8250/16550 driver, nor the
-+ * core UART infrastructure, as they assumes direct access to the hardware
-+ * registers, often under a spinlock. This is not possible in the SDIO
-+ * context as SDIO access functions must be able to sleep.
-+ *
-+ * Because we need to lock the SDIO host to ensure an exclusive access to
-+ * the card, we simply rely on that lock to also prevent and serialize
-+ * concurrent access to the same port.
-+ */
-+
-+#include <linux/module.h>
-+#include <linux/init.h>
-+#include <linux/kernel.h>
-+#include <linux/mutex.h>
-+#include <linux/serial_reg.h>
-+#include <linux/circ_buf.h>
-+#include <linux/gfp.h>
-+#include <linux/tty.h>
-+#include <linux/tty_flip.h>
-+
-+#include <linux/mmc/core.h>
-+#include <linux/mmc/card.h>
-+#include <linux/mmc/sdio_func.h>
-+#include <linux/mmc/sdio_ids.h>
-+
-+
-+#define UART_NR 8 /* Number of UARTs this driver can handle */
-+
-+
-+#define UART_XMIT_SIZE PAGE_SIZE
-+#define WAKEUP_CHARS 256
-+
-+#define circ_empty(circ) ((circ)->head == (circ)->tail)
-+#define circ_clear(circ) ((circ)->head = (circ)->tail = 0)
-+
-+#define circ_chars_pending(circ) \
-+ (CIRC_CNT((circ)->head, (circ)->tail, UART_XMIT_SIZE))
-+
-+#define circ_chars_free(circ) \
-+ (CIRC_SPACE((circ)->head, (circ)->tail, UART_XMIT_SIZE))
-+
-+
-+struct uart_icount {
-+ __u32 cts;
-+ __u32 dsr;
-+ __u32 rng;
-+ __u32 dcd;
-+ __u32 rx;
-+ __u32 tx;
-+ __u32 frame;
-+ __u32 overrun;
-+ __u32 parity;
-+ __u32 brk;
-+};
-+
-+struct sdio_uart_port {
-+ struct kref kref;
-+ struct tty_struct *tty;
-+ unsigned int index;
-+ unsigned int opened;
-+ struct mutex open_lock;
-+ struct sdio_func *func;
-+ struct mutex func_lock;
-+ struct task_struct *in_sdio_uart_irq;
-+ unsigned int regs_offset;
-+ struct circ_buf xmit;
-+ spinlock_t write_lock;
-+ struct uart_icount icount;
-+ unsigned int uartclk;
-+ unsigned int mctrl;
-+ unsigned int read_status_mask;
-+ unsigned int ignore_status_mask;
-+ unsigned char x_char;
-+ unsigned char ier;
-+ unsigned char lcr;
-+};
-+
-+static struct sdio_uart_port *sdio_uart_table[UART_NR];
-+static DEFINE_SPINLOCK(sdio_uart_table_lock);
-+
-+static int sdio_uart_add_port(struct sdio_uart_port *port)
-+{
-+ int index, ret = -EBUSY;
-+
-+ kref_init(&port->kref);
-+ mutex_init(&port->open_lock);
-+ mutex_init(&port->func_lock);
-+ spin_lock_init(&port->write_lock);
-+
-+ spin_lock(&sdio_uart_table_lock);
-+ for (index = 0; index < UART_NR; index++) {
-+ if (!sdio_uart_table[index]) {
-+ port->index = index;
-+ sdio_uart_table[index] = port;
-+ ret = 0;
-+ break;
-+ }
-+ }
-+ spin_unlock(&sdio_uart_table_lock);
-+
-+ return ret;
-+}
-+
-+static struct sdio_uart_port *sdio_uart_port_get(unsigned index)
-+{
-+ struct sdio_uart_port *port;
-+
-+ if (index >= UART_NR)
-+ return NULL;
-+
-+ spin_lock(&sdio_uart_table_lock);
-+ port = sdio_uart_table[index];
-+ if (port)
-+ kref_get(&port->kref);
-+ spin_unlock(&sdio_uart_table_lock);
-+
-+ return port;
-+}
-+
-+static void sdio_uart_port_destroy(struct kref *kref)
-+{
-+ struct sdio_uart_port *port =
-+ container_of(kref, struct sdio_uart_port, kref);
-+ kfree(port);
-+}
-+
-+static void sdio_uart_port_put(struct sdio_uart_port *port)
-+{
-+ kref_put(&port->kref, sdio_uart_port_destroy);
-+}
-+
-+static void sdio_uart_port_remove(struct sdio_uart_port *port)
-+{
-+ struct sdio_func *func;
-+
-+ BUG_ON(sdio_uart_table[port->index] != port);
-+
-+ spin_lock(&sdio_uart_table_lock);
-+ sdio_uart_table[port->index] = NULL;
-+ spin_unlock(&sdio_uart_table_lock);
-+
-+ /*
-+ * We're killing a port that potentially still is in use by
-+ * the tty layer. Be careful to prevent any further access
-+ * to the SDIO function and arrange for the tty layer to
-+ * give up on that port ASAP.
-+ * Beware: the lock ordering is critical.
-+ */
-+ mutex_lock(&port->open_lock);
-+ mutex_lock(&port->func_lock);
-+ func = port->func;
-+ sdio_claim_host(func);
-+ port->func = NULL;
-+ mutex_unlock(&port->func_lock);
-+ if (port->opened)
-+ tty_hangup(port->tty);
-+ mutex_unlock(&port->open_lock);
-+ sdio_release_irq(func);
-+ sdio_disable_func(func);
-+ sdio_release_host(func);
-+
-+ sdio_uart_port_put(port);
-+}
-+
-+static int sdio_uart_claim_func(struct sdio_uart_port *port)
-+{
-+ mutex_lock(&port->func_lock);
-+ if (unlikely(!port->func)) {
-+ mutex_unlock(&port->func_lock);
-+ return -ENODEV;
-+ }
-+ if (likely(port->in_sdio_uart_irq != current))
-+ sdio_claim_host(port->func);
-+ mutex_unlock(&port->func_lock);
-+ return 0;
-+}
-+
-+static inline void sdio_uart_release_func(struct sdio_uart_port *port)
-+{
-+ if (likely(port->in_sdio_uart_irq != current))
-+ sdio_release_host(port->func);
-+}
-+
-+static inline unsigned int sdio_in(struct sdio_uart_port *port, int offset)
-+{
-+ unsigned char c;
-+ c = sdio_readb(port->func, port->regs_offset + offset, NULL);
-+ return c;
-+}
-+
-+static inline void sdio_out(struct sdio_uart_port *port, int offset, int value)
-+{
-+ sdio_writeb(port->func, value, port->regs_offset + offset, NULL);
-+}
-+
-+static unsigned int sdio_uart_get_mctrl(struct sdio_uart_port *port)
-+{
-+ unsigned char status;
-+ unsigned int ret;
-+
-+ status = sdio_in(port, UART_MSR);
-+
-+ ret = 0;
-+ if (status & UART_MSR_DCD)
-+ ret |= TIOCM_CAR;
-+ if (status & UART_MSR_RI)
-+ ret |= TIOCM_RNG;
-+ if (status & UART_MSR_DSR)
-+ ret |= TIOCM_DSR;
-+ if (status & UART_MSR_CTS)
-+ ret |= TIOCM_CTS;
-+ return ret;
-+}
-+
-+static void sdio_uart_write_mctrl(struct sdio_uart_port *port, unsigned int mctrl)
-+{
-+ unsigned char mcr = 0;
-+
-+ if (mctrl & TIOCM_RTS)
-+ mcr |= UART_MCR_RTS;
-+ if (mctrl & TIOCM_DTR)
-+ mcr |= UART_MCR_DTR;
-+ if (mctrl & TIOCM_OUT1)
-+ mcr |= UART_MCR_OUT1;
-+ if (mctrl & TIOCM_OUT2)
-+ mcr |= UART_MCR_OUT2;
-+ if (mctrl & TIOCM_LOOP)
-+ mcr |= UART_MCR_LOOP;
-+
-+ sdio_out(port, UART_MCR, mcr);
-+}
-+
-+static inline void sdio_uart_update_mctrl(struct sdio_uart_port *port,
-+ unsigned int set, unsigned int clear)
-+{
-+ unsigned int old;
-+
-+ old = port->mctrl;
-+ port->mctrl = (old & ~clear) | set;
-+ if (old != port->mctrl)
-+ sdio_uart_write_mctrl(port, port->mctrl);
-+}
-+
-+#define sdio_uart_set_mctrl(port, x) sdio_uart_update_mctrl(port, x, 0)
-+#define sdio_uart_clear_mctrl(port, x) sdio_uart_update_mctrl(port, 0, x)
-+
-+static void sdio_uart_change_speed(struct sdio_uart_port *port,
-+ struct ktermios *termios,
-+ struct ktermios *old)
-+{
-+ unsigned char cval, fcr = 0;
-+ unsigned int baud, quot;
-+
-+ switch (termios->c_cflag & CSIZE) {
-+ case CS5:
-+ cval = UART_LCR_WLEN5;
-+ break;
-+ case CS6:
-+ cval = UART_LCR_WLEN6;
-+ break;
-+ case CS7:
-+ cval = UART_LCR_WLEN7;
-+ break;
-+ default:
-+ case CS8:
-+ cval = UART_LCR_WLEN8;
-+ break;
-+ }
-+
-+ if (termios->c_cflag & CSTOPB)
-+ cval |= UART_LCR_STOP;
-+ if (termios->c_cflag & PARENB)
-+ cval |= UART_LCR_PARITY;
-+ if (!(termios->c_cflag & PARODD))
-+ cval |= UART_LCR_EPAR;
-+
-+ for (;;) {
-+ baud = tty_termios_baud_rate(termios);
-+ if (baud == 0)
-+ baud = 9600; /* Special case: B0 rate. */
-+ if (baud <= port->uartclk)
-+ break;
-+ /*
-+ * Oops, the quotient was zero. Try again with the old
-+ * baud rate if possible, otherwise default to 9600.
-+ */
-+ termios->c_cflag &= ~CBAUD;
-+ if (old) {
-+ termios->c_cflag |= old->c_cflag & CBAUD;
-+ old = NULL;
-+ } else
-+ termios->c_cflag |= B9600;
-+ }
-+ quot = (2 * port->uartclk + baud) / (2 * baud);
-+
-+ if (baud < 2400)
-+ fcr = UART_FCR_ENABLE_FIFO | UART_FCR_TRIGGER_1;
-+ else
-+ fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_10;
-+
-+ port->read_status_mask = UART_LSR_OE | UART_LSR_THRE | UART_LSR_DR;
-+ if (termios->c_iflag & INPCK)
-+ port->read_status_mask |= UART_LSR_FE | UART_LSR_PE;
-+ if (termios->c_iflag & (BRKINT | PARMRK))
-+ port->read_status_mask |= UART_LSR_BI;
-+
-+ /*
-+ * Characters to ignore
-+ */
-+ port->ignore_status_mask = 0;
-+ if (termios->c_iflag & IGNPAR)
-+ port->ignore_status_mask |= UART_LSR_PE | UART_LSR_FE;
-+ if (termios->c_iflag & IGNBRK) {
-+ port->ignore_status_mask |= UART_LSR_BI;
-+ /*
-+ * If we're ignoring parity and break indicators,
-+ * ignore overruns too (for real raw support).
-+ */
-+ if (termios->c_iflag & IGNPAR)
-+ port->ignore_status_mask |= UART_LSR_OE;
-+ }
-+
-+ /*
-+ * ignore all characters if CREAD is not set
-+ */
-+ if ((termios->c_cflag & CREAD) == 0)
-+ port->ignore_status_mask |= UART_LSR_DR;
-+
-+ /*
-+ * CTS flow control flag and modem status interrupts
-+ */
-+ port->ier &= ~UART_IER_MSI;
-+ if ((termios->c_cflag & CRTSCTS) || !(termios->c_cflag & CLOCAL))
-+ port->ier |= UART_IER_MSI;
-+
-+ port->lcr = cval;
-+
-+ sdio_out(port, UART_IER, port->ier);
-+ sdio_out(port, UART_LCR, cval | UART_LCR_DLAB);
-+ sdio_out(port, UART_DLL, quot & 0xff);
-+ sdio_out(port, UART_DLM, quot >> 8);
-+ sdio_out(port, UART_LCR, cval);
-+ sdio_out(port, UART_FCR, fcr);
-+
-+ sdio_uart_write_mctrl(port, port->mctrl);
-+}
-+
-+static void sdio_uart_start_tx(struct sdio_uart_port *port)
-+{
-+ if (!(port->ier & UART_IER_THRI)) {
-+ port->ier |= UART_IER_THRI;
-+ sdio_out(port, UART_IER, port->ier);
-+ }
-+}
-+
-+static void sdio_uart_stop_tx(struct sdio_uart_port *port)
-+{
-+ if (port->ier & UART_IER_THRI) {
-+ port->ier &= ~UART_IER_THRI;
-+ sdio_out(port, UART_IER, port->ier);
-+ }
-+}
-+
-+static void sdio_uart_stop_rx(struct sdio_uart_port *port)
-+{
-+ port->ier &= ~UART_IER_RLSI;
-+ port->read_status_mask &= ~UART_LSR_DR;
-+ sdio_out(port, UART_IER, port->ier);
-+}
-+
-+static void sdio_uart_receive_chars(struct sdio_uart_port *port, unsigned int *status)
-+{
-+ struct tty_struct *tty = port->tty;
-+ unsigned int ch, flag;
-+ int max_count = 256;
-+
-+ do {
-+ ch = sdio_in(port, UART_RX);
-+ flag = TTY_NORMAL;
-+ port->icount.rx++;
-+
-+ if (unlikely(*status & (UART_LSR_BI | UART_LSR_PE |
-+ UART_LSR_FE | UART_LSR_OE))) {
-+ /*
-+ * For statistics only
-+ */
-+ if (*status & UART_LSR_BI) {
-+ *status &= ~(UART_LSR_FE | UART_LSR_PE);
-+ port->icount.brk++;
-+ } else if (*status & UART_LSR_PE)
-+ port->icount.parity++;
-+ else if (*status & UART_LSR_FE)
-+ port->icount.frame++;
-+ if (*status & UART_LSR_OE)
-+ port->icount.overrun++;
-+
-+ /*
-+ * Mask off conditions which should be ignored.
-+ */
-+ *status &= port->read_status_mask;
-+ if (*status & UART_LSR_BI) {
-+ flag = TTY_BREAK;
-+ } else if (*status & UART_LSR_PE)
-+ flag = TTY_PARITY;
-+ else if (*status & UART_LSR_FE)
-+ flag = TTY_FRAME;
-+ }
-+
-+ if ((*status & port->ignore_status_mask & ~UART_LSR_OE) == 0)
-+ tty_insert_flip_char(tty, ch, flag);
-+
-+ /*
-+ * Overrun is special. Since it's reported immediately,
-+ * it doesn't affect the current character.
-+ */
-+ if (*status & ~port->ignore_status_mask & UART_LSR_OE)
-+ tty_insert_flip_char(tty, 0, TTY_OVERRUN);
-+
-+ *status = sdio_in(port, UART_LSR);
-+ } while ((*status & UART_LSR_DR) && (max_count-- > 0));
-+ tty_flip_buffer_push(tty);
-+}
-+
-+static void sdio_uart_transmit_chars(struct sdio_uart_port *port)
-+{
-+ struct circ_buf *xmit = &port->xmit;
-+ int count;
-+
-+ if (port->x_char) {
-+ sdio_out(port, UART_TX, port->x_char);
-+ port->icount.tx++;
-+ port->x_char = 0;
-+ return;
-+ }
-+ if (circ_empty(xmit) || port->tty->stopped || port->tty->hw_stopped) {
-+ sdio_uart_stop_tx(port);
-+ return;
-+ }
-+
-+ count = 16;
-+ do {
-+ sdio_out(port, UART_TX, xmit->buf[xmit->tail]);
-+ xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
-+ port->icount.tx++;
-+ if (circ_empty(xmit))
-+ break;
-+ } while (--count > 0);
-+
-+ if (circ_chars_pending(xmit) < WAKEUP_CHARS)
-+ tty_wakeup(port->tty);
-+
-+ if (circ_empty(xmit))
-+ sdio_uart_stop_tx(port);
-+}
-+
-+static void sdio_uart_check_modem_status(struct sdio_uart_port *port)
-+{
-+ int status;
-+
-+ status = sdio_in(port, UART_MSR);
-+
-+ if ((status & UART_MSR_ANY_DELTA) == 0)
-+ return;
-+
-+ if (status & UART_MSR_TERI)
-+ port->icount.rng++;
-+ if (status & UART_MSR_DDSR)
-+ port->icount.dsr++;
-+ if (status & UART_MSR_DDCD)
-+ port->icount.dcd++;
-+ if (status & UART_MSR_DCTS) {
-+ port->icount.cts++;
-+ if (port->tty->termios->c_cflag & CRTSCTS) {
-+ int cts = (status & UART_MSR_CTS);
-+ if (port->tty->hw_stopped) {
-+ if (cts) {
-+ port->tty->hw_stopped = 0;
-+ sdio_uart_start_tx(port);
-+ tty_wakeup(port->tty);
-+ }
-+ } else {
-+ if (!cts) {
-+ port->tty->hw_stopped = 1;
-+ sdio_uart_stop_tx(port);
-+ }
-+ }
-+ }
-+ }
-+}
-+
-+/*
-+ * This handles the interrupt from one port.
-+ */
-+static void sdio_uart_irq(struct sdio_func *func)
-+{
-+ struct sdio_uart_port *port = sdio_get_drvdata(func);
-+ unsigned int iir, lsr;
-+
-+ /*
-+ * In a few places sdio_uart_irq() is called directly instead of
-+ * waiting for the actual interrupt to be raised and the SDIO IRQ
-+ * thread scheduled in order to reduce latency. However, some
-+ * interaction with the tty core may end up calling us back
-+ * (serial echo, flow control, etc.) through those same places
-+ * causing undesirable effects. Let's stop the recursion here.
-+ */
-+ if (unlikely(port->in_sdio_uart_irq == current))
-+ return;
-+
-+ iir = sdio_in(port, UART_IIR);
-+ if (iir & UART_IIR_NO_INT)
-+ return;
-+
-+ port->in_sdio_uart_irq = current;
-+ lsr = sdio_in(port, UART_LSR);
-+ if (lsr & UART_LSR_DR)
-+ sdio_uart_receive_chars(port, &lsr);
-+ sdio_uart_check_modem_status(port);
-+ if (lsr & UART_LSR_THRE)
-+ sdio_uart_transmit_chars(port);
-+ port->in_sdio_uart_irq = NULL;
-+}
-+
-+static int sdio_uart_startup(struct sdio_uart_port *port)
-+{
-+ unsigned long page;
-+ int ret;
-+
-+ /*
-+ * Set the TTY IO error marker - we will only clear this
-+ * once we have successfully opened the port.
-+ */
-+ set_bit(TTY_IO_ERROR, &port->tty->flags);
-+
-+ /* Initialise and allocate the transmit buffer. */
-+ page = __get_free_page(GFP_KERNEL);
-+ if (!page)
-+ return -ENOMEM;
-+ port->xmit.buf = (unsigned char *)page;
-+ circ_clear(&port->xmit);
-+
-+ ret = sdio_uart_claim_func(port);
-+ if (ret)
-+ goto err1;
-+ ret = sdio_enable_func(port->func);
-+ if (ret)
-+ goto err2;
-+ ret = sdio_claim_irq(port->func, sdio_uart_irq);
-+ if (ret)
-+ goto err3;
-+
-+ /*
-+ * Clear the FIFO buffers and disable them.
-+ * (they will be reenabled in sdio_change_speed())
-+ */
-+ sdio_out(port, UART_FCR, UART_FCR_ENABLE_FIFO);
-+ sdio_out(port, UART_FCR, UART_FCR_ENABLE_FIFO |
-+ UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT);
-+ sdio_out(port, UART_FCR, 0);
-+
-+ /*
-+ * Clear the interrupt registers.
-+ */
-+ (void) sdio_in(port, UART_LSR);
-+ (void) sdio_in(port, UART_RX);
-+ (void) sdio_in(port, UART_IIR);
-+ (void) sdio_in(port, UART_MSR);
-+
-+ /*
-+ * Now, initialize the UART
-+ */
-+ sdio_out(port, UART_LCR, UART_LCR_WLEN8);
-+
-+ port->ier = UART_IER_RLSI | UART_IER_RDI | UART_IER_RTOIE | UART_IER_UUE;
-+ port->mctrl = TIOCM_OUT2;
-+
-+ sdio_uart_change_speed(port, port->tty->termios, NULL);
-+
-+ if (port->tty->termios->c_cflag & CBAUD)
-+ sdio_uart_set_mctrl(port, TIOCM_RTS | TIOCM_DTR);
-+
-+ if (port->tty->termios->c_cflag & CRTSCTS)
-+ if (!(sdio_uart_get_mctrl(port) & TIOCM_CTS))
-+ port->tty->hw_stopped = 1;
-+
-+ clear_bit(TTY_IO_ERROR, &port->tty->flags);
-+
-+ /* Kick the IRQ handler once while we're still holding the host lock */
-+ sdio_uart_irq(port->func);
-+
-+ sdio_uart_release_func(port);
-+ return 0;
-+
-+err3:
-+ sdio_disable_func(port->func);
-+err2:
-+ sdio_uart_release_func(port);
-+err1:
-+ free_page((unsigned long)port->xmit.buf);
-+ return ret;
-+}
-+
-+static void sdio_uart_shutdown(struct sdio_uart_port *port)
-+{
-+ int ret;
-+
-+ ret = sdio_uart_claim_func(port);
-+ if (ret)
-+ goto skip;
-+
-+ sdio_uart_stop_rx(port);
-+
-+ /* TODO: wait here for TX FIFO to drain */
-+
-+ /* Turn off DTR and RTS early. */
-+ if (port->tty->termios->c_cflag & HUPCL)
-+ sdio_uart_clear_mctrl(port, TIOCM_DTR | TIOCM_RTS);
-+
-+ /* Disable interrupts from this port */
-+ sdio_release_irq(port->func);
-+ port->ier = 0;
-+ sdio_out(port, UART_IER, 0);
-+
-+ sdio_uart_clear_mctrl(port, TIOCM_OUT2);
-+
-+ /* Disable break condition and FIFOs. */
-+ port->lcr &= ~UART_LCR_SBC;
-+ sdio_out(port, UART_LCR, port->lcr);
-+ sdio_out(port, UART_FCR, UART_FCR_ENABLE_FIFO |
-+ UART_FCR_CLEAR_RCVR |
-+ UART_FCR_CLEAR_XMIT);
-+ sdio_out(port, UART_FCR, 0);
-+
-+ sdio_disable_func(port->func);
-+
-+ sdio_uart_release_func(port);
-+
-+skip:
-+ /* Free the transmit buffer page. */
-+ free_page((unsigned long)port->xmit.buf);
-+}
-+
-+static int sdio_uart_open (struct tty_struct *tty, struct file * filp)
-+{
-+ struct sdio_uart_port *port;
-+ int ret;
-+
-+ port = sdio_uart_port_get(tty->index);
-+ if (!port)
-+ return -ENODEV;
-+
-+ mutex_lock(&port->open_lock);
-+
-+ /*
-+ * Make sure not to mess up with a dead port
-+ * which has not been closed yet.
-+ */
-+ if (tty->driver_data && tty->driver_data != port) {
-+ mutex_unlock(&port->open_lock);
-+ sdio_uart_port_put(port);
-+ return -EBUSY;
-+ }
-+
-+ if (!port->opened) {
-+ tty->driver_data = port;
-+ port->tty = tty;
-+ ret = sdio_uart_startup(port);
-+ if (ret) {
-+ tty->driver_data = NULL;
-+ port->tty = NULL;
-+ mutex_unlock(&port->open_lock);
-+ sdio_uart_port_put(port);
-+ return ret;
-+ }
-+ }
-+ port->opened++;
-+ mutex_unlock(&port->open_lock);
-+ return 0;
-+}
-+
-+static void sdio_uart_close(struct tty_struct *tty, struct file * filp)
-+{
-+ struct sdio_uart_port *port = tty->driver_data;
-+
-+ if (!port)
-+ return;
-+
-+ mutex_lock(&port->open_lock);
-+ BUG_ON(!port->opened);
-+
-+ /*
-+ * This is messy. The tty layer calls us even when open()
-+ * returned an error. Ignore this close request if tty->count
-+ * is larger than port->count.
-+ */
-+ if (tty->count > port->opened) {
-+ mutex_unlock(&port->open_lock);
-+ return;
-+ }
-+
-+ if (--port->opened == 0) {
-+ tty->closing = 1;
-+ sdio_uart_shutdown(port);
-+ tty_ldisc_flush(tty);
-+ port->tty = NULL;
-+ tty->driver_data = NULL;
-+ tty->closing = 0;
-+ }
-+ mutex_unlock(&port->open_lock);
-+ sdio_uart_port_put(port);
-+}
-+
-+static int sdio_uart_write(struct tty_struct * tty, const unsigned char *buf,
-+ int count)
-+{
-+ struct sdio_uart_port *port = tty->driver_data;
-+ struct circ_buf *circ = &port->xmit;
-+ int c, ret = 0;
-+
-+ if (!port->func)
-+ return -ENODEV;
-+
-+ spin_lock(&port->write_lock);
-+ while (1) {
-+ c = CIRC_SPACE_TO_END(circ->head, circ->tail, UART_XMIT_SIZE);
-+ if (count < c)
-+ c = count;
-+ if (c <= 0)
-+ break;
-+ memcpy(circ->buf + circ->head, buf, c);
-+ circ->head = (circ->head + c) & (UART_XMIT_SIZE - 1);
-+ buf += c;
-+ count -= c;
-+ ret += c;
-+ }
-+ spin_unlock(&port->write_lock);
-+
-+ if ( !(port->ier & UART_IER_THRI)) {
-+ int err = sdio_uart_claim_func(port);
-+ if (!err) {
-+ sdio_uart_start_tx(port);
-+ sdio_uart_irq(port->func);
-+ sdio_uart_release_func(port);
-+ } else
-+ ret = err;
-+ }
-+
-+ return ret;
-+}
-+
-+static int sdio_uart_write_room(struct tty_struct *tty)
-+{
-+ struct sdio_uart_port *port = tty->driver_data;
-+ return port ? circ_chars_free(&port->xmit) : 0;
-+}
-+
-+static int sdio_uart_chars_in_buffer(struct tty_struct *tty)
-+{
-+ struct sdio_uart_port *port = tty->driver_data;
-+ return port ? circ_chars_pending(&port->xmit) : 0;
-+}
-+
-+static void sdio_uart_send_xchar(struct tty_struct *tty, char ch)
-+{
-+ struct sdio_uart_port *port = tty->driver_data;
-+
-+ port->x_char = ch;
-+ if (ch && !(port->ier & UART_IER_THRI)) {
-+ if (sdio_uart_claim_func(port) != 0)
-+ return;
-+ sdio_uart_start_tx(port);
-+ sdio_uart_irq(port->func);
-+ sdio_uart_release_func(port);
-+ }
-+}
-+
-+static void sdio_uart_throttle(struct tty_struct *tty)
-+{
-+ struct sdio_uart_port *port = tty->driver_data;
-+
-+ if (!I_IXOFF(tty) && !(tty->termios->c_cflag & CRTSCTS))
-+ return;
-+
-+ if (sdio_uart_claim_func(port) != 0)
-+ return;
-+
-+ if (I_IXOFF(tty)) {
-+ port->x_char = STOP_CHAR(tty);
-+ sdio_uart_start_tx(port);
-+ }
-+
-+ if (tty->termios->c_cflag & CRTSCTS)
-+ sdio_uart_clear_mctrl(port, TIOCM_RTS);
-+
-+ sdio_uart_irq(port->func);
-+ sdio_uart_release_func(port);
-+}
-+
-+static void sdio_uart_unthrottle(struct tty_struct *tty)
-+{
-+ struct sdio_uart_port *port = tty->driver_data;
-+
-+ if (!I_IXOFF(tty) && !(tty->termios->c_cflag & CRTSCTS))
-+ return;
-+
-+ if (sdio_uart_claim_func(port) != 0)
-+ return;
-+
-+ if (I_IXOFF(tty)) {
-+ if (port->x_char) {
-+ port->x_char = 0;
-+ } else {
-+ port->x_char = START_CHAR(tty);
-+ sdio_uart_start_tx(port);
-+ }
-+ }
-+
-+ if (tty->termios->c_cflag & CRTSCTS)
-+ sdio_uart_set_mctrl(port, TIOCM_RTS);
-+
-+ sdio_uart_irq(port->func);
-+ sdio_uart_release_func(port);
-+}
-+
-+static void sdio_uart_set_termios(struct tty_struct *tty, struct ktermios *old_termios)
-+{
-+ struct sdio_uart_port *port = tty->driver_data;
-+ unsigned int cflag = tty->termios->c_cflag;
-+
-+#define RELEVANT_IFLAG(iflag) ((iflag) & (IGNBRK|BRKINT|IGNPAR|PARMRK|INPCK))
-+
-+ if ((cflag ^ old_termios->c_cflag) == 0 &&
-+ RELEVANT_IFLAG(tty->termios->c_iflag ^ old_termios->c_iflag) == 0)
-+ return;
-+
-+ if (sdio_uart_claim_func(port) != 0)
-+ return;
-+
-+ sdio_uart_change_speed(port, tty->termios, old_termios);
-+
-+ /* Handle transition to B0 status */
-+ if ((old_termios->c_cflag & CBAUD) && !(cflag & CBAUD))
-+ sdio_uart_clear_mctrl(port, TIOCM_RTS | TIOCM_DTR);
-+
-+ /* Handle transition away from B0 status */
-+ if (!(old_termios->c_cflag & CBAUD) && (cflag & CBAUD)) {
-+ unsigned int mask = TIOCM_DTR;
-+ if (!(cflag & CRTSCTS) || !test_bit(TTY_THROTTLED, &tty->flags))
-+ mask |= TIOCM_RTS;
-+ sdio_uart_set_mctrl(port, mask);
-+ }
-+
-+ /* Handle turning off CRTSCTS */
-+ if ((old_termios->c_cflag & CRTSCTS) && !(cflag & CRTSCTS)) {
-+ tty->hw_stopped = 0;
-+ sdio_uart_start_tx(port);
-+ }
-+
-+ /* Handle turning on CRTSCTS */
-+ if (!(old_termios->c_cflag & CRTSCTS) && (cflag & CRTSCTS)) {
-+ if (!(sdio_uart_get_mctrl(port) & TIOCM_CTS)) {
-+ tty->hw_stopped = 1;
-+ sdio_uart_stop_tx(port);
-+ }
-+ }
-+
-+ sdio_uart_release_func(port);
-+}
-+
-+static void sdio_uart_break_ctl(struct tty_struct *tty, int break_state)
-+{
-+ struct sdio_uart_port *port = tty->driver_data;
-+
-+ if (sdio_uart_claim_func(port) != 0)
-+ return;
-+
-+ if (break_state == -1)
-+ port->lcr |= UART_LCR_SBC;
-+ else
-+ port->lcr &= ~UART_LCR_SBC;
-+ sdio_out(port, UART_LCR, port->lcr);
-+
-+ sdio_uart_release_func(port);
-+}
-+
-+static int sdio_uart_tiocmget(struct tty_struct *tty, struct file *file)
-+{
-+ struct sdio_uart_port *port = tty->driver_data;
-+ int result;
-+
-+ result = sdio_uart_claim_func(port);
-+ if (!result) {
-+ result = port->mctrl | sdio_uart_get_mctrl(port);
-+ sdio_uart_release_func(port);
-+ }
-+
-+ return result;
-+}
-+
-+static int sdio_uart_tiocmset(struct tty_struct *tty, struct file *file,
-+ unsigned int set, unsigned int clear)
-+{
-+ struct sdio_uart_port *port = tty->driver_data;
-+ int result;
-+
-+ result =sdio_uart_claim_func(port);
-+ if(!result) {
-+ sdio_uart_update_mctrl(port, set, clear);
-+ sdio_uart_release_func(port);
-+ }
-+
-+ return result;
-+}
-+
-+static int sdio_uart_read_proc(char *page, char **start, off_t off,
-+ int count, int *eof, void *data)
-+{
-+ int i, len = 0;
-+ off_t begin = 0;
-+
-+ len += sprintf(page, "serinfo:1.0 driver%s%s revision:%s\n",
-+ "", "", "");
-+ for (i = 0; i < UART_NR && len < PAGE_SIZE - 96; i++) {
-+ struct sdio_uart_port *port = sdio_uart_port_get(i);
-+ if (port) {
-+ len += sprintf(page+len, "%d: uart:SDIO", i);
-+ if(capable(CAP_SYS_ADMIN)) {
-+ len += sprintf(page + len, " tx:%d rx:%d",
-+ port->icount.tx, port->icount.rx);
-+ if (port->icount.frame)
-+ len += sprintf(page + len, " fe:%d",
-+ port->icount.frame);
-+ if (port->icount.parity)
-+ len += sprintf(page + len, " pe:%d",
-+ port->icount.parity);
-+ if (port->icount.brk)
-+ len += sprintf(page + len, " brk:%d",
-+ port->icount.brk);
-+ if (port->icount.overrun)
-+ len += sprintf(page + len, " oe:%d",
-+ port->icount.overrun);
-+ if (port->icount.cts)
-+ len += sprintf(page + len, " cts:%d",
-+ port->icount.cts);
-+ if (port->icount.dsr)
-+ len += sprintf(page + len, " dsr:%d",
-+ port->icount.dsr);
-+ if (port->icount.rng)
-+ len += sprintf(page + len, " rng:%d",
-+ port->icount.rng);
-+ if (port->icount.dcd)
-+ len += sprintf(page + len, " dcd:%d",
-+ port->icount.dcd);
-+ }
-+ strcat(page, "\n");
-+ len++;
-+ sdio_uart_port_put(port);
-+ }
-+
-+ if (len + begin > off + count)
-+ goto done;
-+ if (len + begin < off) {
-+ begin += len;
-+ len = 0;
-+ }
-+ }
-+ *eof = 1;
-+
-+done:
-+ if (off >= len + begin)
-+ return 0;
-+ *start = page + (off - begin);
-+ return (count < begin + len - off) ? count : (begin + len - off);
-+}
-+
-+static const struct tty_operations sdio_uart_ops = {
-+ .open = sdio_uart_open,
-+ .close = sdio_uart_close,
-+ .write = sdio_uart_write,
-+ .write_room = sdio_uart_write_room,
-+ .chars_in_buffer = sdio_uart_chars_in_buffer,
-+ .send_xchar = sdio_uart_send_xchar,
-+ .throttle = sdio_uart_throttle,
-+ .unthrottle = sdio_uart_unthrottle,
-+ .set_termios = sdio_uart_set_termios,
-+ .break_ctl = sdio_uart_break_ctl,
-+ .tiocmget = sdio_uart_tiocmget,
-+ .tiocmset = sdio_uart_tiocmset,
-+ .read_proc = sdio_uart_read_proc,
-+};
-+
-+static struct tty_driver *sdio_uart_tty_driver;
-+
-+static int sdio_uart_probe(struct sdio_func *func,
-+ const struct sdio_device_id *id)
-+{
-+ struct sdio_uart_port *port;
-+ int ret;
-+
-+ port = kzalloc(sizeof(struct sdio_uart_port), GFP_KERNEL);
-+ if (!port)
-+ return -ENOMEM;
-+
-+ if (func->class == SDIO_CLASS_UART) {
-+ printk(KERN_WARNING "%s: need info on UART class basic setup\n",
-+ sdio_func_id(func));
-+ kfree(port);
-+ return -ENOSYS;
-+ } else if (func->class == SDIO_CLASS_GPS) {
-+ /*
-+ * We need tuple 0x91. It contains SUBTPL_SIOREG
-+ * and SUBTPL_RCVCAPS.
-+ */
-+ struct sdio_func_tuple *tpl;
-+ for (tpl = func->tuples; tpl; tpl = tpl->next) {
-+ if (tpl->code != 0x91)
-+ continue;
-+ if (tpl->size < 10)
-+ continue;
-+ if (tpl->data[1] == 0) /* SUBTPL_SIOREG */
-+ break;
-+ }
-+ if (!tpl) {
-+ printk(KERN_WARNING
-+ "%s: can't find tuple 0x91 subtuple 0 (SUBTPL_SIOREG) for GPS class\n",
-+ sdio_func_id(func));
-+ kfree(port);
-+ return -EINVAL;
-+ }
-+ printk(KERN_DEBUG "%s: Register ID = 0x%02x, Exp ID = 0x%02x\n",
-+ sdio_func_id(func), tpl->data[2], tpl->data[3]);
-+ port->regs_offset = (tpl->data[4] << 0) |
-+ (tpl->data[5] << 8) |
-+ (tpl->data[6] << 16);
-+ printk(KERN_DEBUG "%s: regs offset = 0x%x\n",
-+ sdio_func_id(func), port->regs_offset);
-+ port->uartclk = tpl->data[7] * 115200;
-+ if (port->uartclk == 0)
-+ port->uartclk = 115200;
-+ printk(KERN_DEBUG "%s: clk %d baudcode %u 4800-div %u\n",
-+ sdio_func_id(func), port->uartclk,
-+ tpl->data[7], tpl->data[8] | (tpl->data[9] << 8));
-+ } else {
-+ kfree(port);
-+ return -EINVAL;
-+ }
-+
-+ port->func = func;
-+ sdio_set_drvdata(func, port);
-+
-+ ret = sdio_uart_add_port(port);
-+ if (ret) {
-+ kfree(port);
-+ } else {
-+ struct device *dev;
-+ dev = tty_register_device(sdio_uart_tty_driver, port->index, &func->dev);
-+ if (IS_ERR(dev)) {
-+ sdio_uart_port_remove(port);
-+ ret = PTR_ERR(dev);
-+ }
-+ }
-+
-+ return ret;
-+}
-+
-+static void sdio_uart_remove(struct sdio_func *func)
-+{
-+ struct sdio_uart_port *port = sdio_get_drvdata(func);
-+
-+ tty_unregister_device(sdio_uart_tty_driver, port->index);
-+ sdio_uart_port_remove(port);
-+}
-+
-+static const struct sdio_device_id sdio_uart_ids[] = {
-+ { SDIO_DEVICE_CLASS(SDIO_CLASS_UART) },
-+ { SDIO_DEVICE_CLASS(SDIO_CLASS_GPS) },
-+ { /* end: all zeroes */ },
-+};
-+
-+MODULE_DEVICE_TABLE(sdio, sdio_uart_ids);
-+
-+static struct sdio_driver sdio_uart_driver = {
-+ .probe = sdio_uart_probe,
-+ .remove = sdio_uart_remove,
-+ .name = "sdio_uart",
-+ .id_table = sdio_uart_ids,
-+};
-+
-+static int __init sdio_uart_init(void)
-+{
-+ int ret;
-+ struct tty_driver *tty_drv;
-+
-+ sdio_uart_tty_driver = tty_drv = alloc_tty_driver(UART_NR);
-+ if (!tty_drv)
-+ return -ENOMEM;
-+
-+ tty_drv->owner = THIS_MODULE;
-+ tty_drv->driver_name = "sdio_uart";
-+ tty_drv->name = "ttySDIO";
-+ tty_drv->major = 0; /* dynamically allocated */
-+ tty_drv->minor_start = 0;
-+ tty_drv->type = TTY_DRIVER_TYPE_SERIAL;
-+ tty_drv->subtype = SERIAL_TYPE_NORMAL;
-+ tty_drv->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
-+ tty_drv->init_termios = tty_std_termios;
-+ tty_drv->init_termios.c_cflag = B4800 | CS8 | CREAD | HUPCL | CLOCAL;
-+ tty_drv->init_termios.c_ispeed = 4800;
-+ tty_drv->init_termios.c_ospeed = 4800;
-+ tty_set_operations(tty_drv, &sdio_uart_ops);
-+
-+ ret = tty_register_driver(tty_drv);
-+ if (ret)
-+ goto err1;
-+
-+ ret = sdio_register_driver(&sdio_uart_driver);
-+ if (ret)
-+ goto err2;
-+
-+ return 0;
-+
-+err2:
-+ tty_unregister_driver(tty_drv);
-+err1:
-+ put_tty_driver(tty_drv);
-+ return ret;
-+}
-+
-+static void __exit sdio_uart_exit(void)
-+{
-+ sdio_unregister_driver(&sdio_uart_driver);
-+ tty_unregister_driver(sdio_uart_tty_driver);
-+ put_tty_driver(sdio_uart_tty_driver);
-+}
-+
-+module_init(sdio_uart_init);
-+module_exit(sdio_uart_exit);
-+
-+MODULE_AUTHOR("Nicolas Pitre");
-+MODULE_LICENSE("GPL");
---- a/drivers/mmc/core/Makefile
-+++ b/drivers/mmc/core/Makefile
-@@ -8,5 +8,7 @@ endif
-
- obj-$(CONFIG_MMC) += mmc_core.o
- mmc_core-y := core.o sysfs.o bus.o host.o \
-- mmc.o mmc_ops.o sd.o sd_ops.o
-+ mmc.o mmc_ops.o sd.o sd_ops.o \
-+ sdio.o sdio_ops.o sdio_bus.o \
-+ sdio_cis.o sdio_io.o sdio_irq.o
-
projects / openwrt / svn-archive / archive.git / blobdiff