--- /dev/null
+From a2fb45195f1b90058e96e09892c071ef4207b593 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?David=20Lanzend=C3=B6rfer?= <david.lanzendoerfer@o2s.ch>
+Date: Sat, 22 Feb 2014 09:13:55 +0100
+Subject: [PATCH] ARM: sunxi: Add driver for SD/MMC hosts found on Allwinner
+ sunxi SoCs
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+This is based on the driver Allwinner ships in their Android kernel sources.
+
+Initial porting to upstream kernels done by David Lanzendörfer, additional
+fixes and cleanups by Hans de Goede.
+
+It uses dma in bus-master mode using a built-in designware idmac controller,
+which is identical to the one found in the mmc-dw hosts.
+The rest of the host is not identical to mmc-dw.
+
+Signed-off-by: David Lanzendörfer <david.lanzendoerfer@o2s.ch>
+Signed-off-by: Hans de Goede <hdegoede@redhat.com>
+---
+ drivers/mmc/host/Kconfig | 7 +
+ drivers/mmc/host/Makefile | 2 +
+ drivers/mmc/host/sunxi-mmc.c | 853 +++++++++++++++++++++++++++++++++++++++++++
+ drivers/mmc/host/sunxi-mmc.h | 238 ++++++++++++
+ 4 files changed, 1100 insertions(+)
+ create mode 100644 drivers/mmc/host/sunxi-mmc.c
+ create mode 100644 drivers/mmc/host/sunxi-mmc.h
+
+diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig
+index 1384f67..7caf266 100644
+--- a/drivers/mmc/host/Kconfig
++++ b/drivers/mmc/host/Kconfig
+@@ -689,3 +689,10 @@ config MMC_REALTEK_PCI
+ help
+ Say Y here to include driver code to support SD/MMC card interface
+ of Realtek PCI-E card reader
++
++config MMC_SUNXI
++ tristate "Allwinner sunxi SD/MMC Host Controller support"
++ depends on ARCH_SUNXI
++ help
++ This selects support for the SD/MMC Host Controller on
++ Allwinner sunxi SoCs.
+diff --git a/drivers/mmc/host/Makefile b/drivers/mmc/host/Makefile
+index 3483b6b..f3c7c243 100644
+--- a/drivers/mmc/host/Makefile
++++ b/drivers/mmc/host/Makefile
+@@ -54,6 +54,8 @@ obj-$(CONFIG_MMC_WMT) += wmt-sdmmc.o
+
+ obj-$(CONFIG_MMC_REALTEK_PCI) += rtsx_pci_sdmmc.o
+
++obj-$(CONFIG_MMC_SUNXI) += sunxi-mmc.o
++
+ obj-$(CONFIG_MMC_SDHCI_PLTFM) += sdhci-pltfm.o
+ obj-$(CONFIG_MMC_SDHCI_CNS3XXX) += sdhci-cns3xxx.o
+ obj-$(CONFIG_MMC_SDHCI_ESDHC_IMX) += sdhci-esdhc-imx.o
+diff --git a/drivers/mmc/host/sunxi-mmc.c b/drivers/mmc/host/sunxi-mmc.c
+new file mode 100644
+index 0000000..a16abd2
+--- /dev/null
++++ b/drivers/mmc/host/sunxi-mmc.c
+@@ -0,0 +1,853 @@
++/*
++ * Driver for sunxi SD/MMC host controllers
++ * (C) Copyright 2007-2011 Reuuimlla Technology Co., Ltd.
++ * (C) Copyright 2007-2011 Aaron Maoye <leafy.myeh@reuuimllatech.com>
++ * (C) Copyright 2013-2014 O2S GmbH <www.o2s.ch>
++ * (C) Copyright 2013-2014 David Lanzendörfer <david.lanzendoerfer@o2s.ch>
++ * (C) Copyright 2013-2014 Hans de Goede <hdegoede@redhat.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.
++ */
++
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/io.h>
++#include <linux/device.h>
++#include <linux/interrupt.h>
++#include <linux/delay.h>
++#include <linux/err.h>
++
++#include <linux/clk.h>
++#include <linux/clk-private.h>
++#include <linux/clk/sunxi.h>
++
++#include <linux/gpio.h>
++#include <linux/platform_device.h>
++#include <linux/spinlock.h>
++#include <linux/scatterlist.h>
++#include <linux/dma-mapping.h>
++#include <linux/slab.h>
++#include <linux/regulator/consumer.h>
++
++#include <linux/of_address.h>
++#include <linux/of_gpio.h>
++#include <linux/of_platform.h>
++
++#include <linux/mmc/host.h>
++#include <linux/mmc/sd.h>
++#include <linux/mmc/sdio.h>
++#include <linux/mmc/mmc.h>
++#include <linux/mmc/core.h>
++#include <linux/mmc/card.h>
++#include <linux/mmc/slot-gpio.h>
++
++#include "sunxi-mmc.h"
++
++static int sunxi_mmc_init_host(struct mmc_host *mmc)
++{
++ u32 rval;
++ struct sunxi_mmc_host *smc_host = mmc_priv(mmc);
++ int ret;
++
++ ret = clk_prepare_enable(smc_host->clk_ahb);
++ if (ret) {
++ dev_err(mmc_dev(smc_host->mmc), "AHB clk err %d\n", ret);
++ return ret;
++ }
++ ret = clk_prepare_enable(smc_host->clk_mod);
++ if (ret) {
++ dev_err(mmc_dev(smc_host->mmc), "MOD clk err %d\n", ret);
++ clk_disable_unprepare(smc_host->clk_ahb);
++ return ret;
++ }
++
++ /* reset controller */
++ rval = mci_readl(smc_host, REG_GCTRL) | SDXC_HARDWARE_RESET;
++ mci_writel(smc_host, REG_GCTRL, rval);
++
++ mci_writel(smc_host, REG_FTRGL, 0x20070008);
++ mci_writel(smc_host, REG_TMOUT, 0xffffffff);
++ mci_writel(smc_host, REG_IMASK, smc_host->sdio_imask);
++ mci_writel(smc_host, REG_RINTR, 0xffffffff);
++ mci_writel(smc_host, REG_DBGC, 0xdeb);
++ mci_writel(smc_host, REG_FUNS, 0xceaa0000);
++ mci_writel(smc_host, REG_DLBA, smc_host->sg_dma);
++ rval = mci_readl(smc_host, REG_GCTRL)|SDXC_INTERRUPT_ENABLE_BIT;
++ rval &= ~SDXC_ACCESS_DONE_DIRECT;
++ mci_writel(smc_host, REG_GCTRL, rval);
++
++ return 0;
++}
++
++static void sunxi_mmc_exit_host(struct sunxi_mmc_host *smc_host)
++{
++ mci_writel(smc_host, REG_GCTRL, SDXC_HARDWARE_RESET);
++ clk_disable_unprepare(smc_host->clk_ahb);
++ clk_disable_unprepare(smc_host->clk_mod);
++}
++
++/* /\* UHS-I Operation Modes */
++/* * DS 25MHz 12.5MB/s 3.3V */
++/* * HS 50MHz 25MB/s 3.3V */
++/* * SDR12 25MHz 12.5MB/s 1.8V */
++/* * SDR25 50MHz 25MB/s 1.8V */
++/* * SDR50 100MHz 50MB/s 1.8V */
++/* * SDR104 208MHz 104MB/s 1.8V */
++/* * DDR50 50MHz 50MB/s 1.8V */
++/* * MMC Operation Modes */
++/* * DS 26MHz 26MB/s 3/1.8/1.2V */
++/* * HS 52MHz 52MB/s 3/1.8/1.2V */
++/* * HSDDR 52MHz 104MB/s 3/1.8/1.2V */
++/* * HS200 200MHz 200MB/s 1.8/1.2V */
++/* * */
++/* * Spec. Timing */
++/* * SD3.0 */
++/* * Fcclk Tcclk Fsclk Tsclk Tis Tih odly RTis RTih */
++/* * 400K 2.5us 24M 41ns 5ns 5ns 1 2209ns 41ns */
++/* * 25M 40ns 600M 1.67ns 5ns 5ns 3 14.99ns 5.01ns */
++/* * 50M 20ns 600M 1.67ns 6ns 2ns 3 14.99ns 5.01ns */
++/* * 50MDDR 20ns 600M 1.67ns 6ns 0.8ns 2 6.67ns 3.33ns */
++/* * 104M 9.6ns 600M 1.67ns 3ns 0.8ns 1 7.93ns 1.67ns */
++/* * 208M 4.8ns 600M 1.67ns 1.4ns 0.8ns 1 3.33ns 1.67ns */
++
++/* * 25M 40ns 300M 3.33ns 5ns 5ns 2 13.34ns 6.66ns */
++/* * 50M 20ns 300M 3.33ns 6ns 2ns 2 13.34ns 6.66ns */
++/* * 50MDDR 20ns 300M 3.33ns 6ns 0.8ns 1 6.67ns 3.33ns */
++/* * 104M 9.6ns 300M 3.33ns 3ns 0.8ns 0 7.93ns 1.67ns */
++/* * 208M 4.8ns 300M 3.33ns 1.4ns 0.8ns 0 3.13ns 1.67ns */
++
++/* * eMMC4.5 */
++/* * 400K 2.5us 24M 41ns 3ns 3ns 1 2209ns 41ns */
++/* * 25M 40ns 600M 1.67ns 3ns 3ns 3 14.99ns 5.01ns */
++/* * 50M 20ns 600M 1.67ns 3ns 3ns 3 14.99ns 5.01ns */
++/* * 50MDDR 20ns 600M 1.67ns 2.5ns 2.5ns 2 6.67ns 3.33ns */
++/* * 200M 5ns 600M 1.67ns 1.4ns 0.8ns 1 3.33ns 1.67ns */
++/* *\/ */
++
++static void sunxi_mmc_init_idma_des(struct sunxi_mmc_host *host,
++ struct mmc_data *data)
++{
++ struct sunxi_idma_des *pdes = (struct sunxi_idma_des *)host->sg_cpu;
++ struct sunxi_idma_des *pdes_pa = (struct sunxi_idma_des *)host->sg_dma;
++ int i, max_len = (1 << host->idma_des_size_bits);
++
++ for (i = 0; i < data->sg_len; i++) {
++ pdes[i].config = SDXC_IDMAC_DES0_CH | SDXC_IDMAC_DES0_OWN |
++ SDXC_IDMAC_DES0_DIC;
++
++ if (data->sg[i].length == max_len)
++ pdes[i].buf_size = 0; /* 0 == max_len */
++ else
++ pdes[i].buf_size = data->sg[i].length;
++
++ pdes[i].buf_addr_ptr1 = sg_dma_address(&data->sg[i]);
++ pdes[i].buf_addr_ptr2 = (u32)&pdes_pa[i + 1];
++ }
++
++ pdes[0].config |= SDXC_IDMAC_DES0_FD;
++ pdes[i - 1].config = SDXC_IDMAC_DES0_OWN | SDXC_IDMAC_DES0_LD;
++
++ wmb(); /* Ensure idma_des hit main mem before we start the idmac */
++}
++
++static enum dma_data_direction sunxi_mmc_get_dma_dir(struct mmc_data *data)
++{
++ if (data->flags & MMC_DATA_WRITE)
++ return DMA_TO_DEVICE;
++ else
++ return DMA_FROM_DEVICE;
++}
++
++static int sunxi_mmc_prepare_dma(struct sunxi_mmc_host *smc_host,
++ struct mmc_data *data)
++{
++ u32 dma_len;
++ u32 i;
++ u32 temp;
++ struct scatterlist *sg;
++
++ dma_len = dma_map_sg(mmc_dev(smc_host->mmc), data->sg, data->sg_len,
++ sunxi_mmc_get_dma_dir(data));
++ if (dma_len == 0) {
++ dev_err(mmc_dev(smc_host->mmc), "dma_map_sg failed\n");
++ return -ENOMEM;
++ }
++
++ for_each_sg(data->sg, sg, data->sg_len, i) {
++ if (sg->offset & 3 || sg->length & 3) {
++ dev_err(mmc_dev(smc_host->mmc),
++ "unaligned scatterlist: os %x length %d\n",
++ sg->offset, sg->length);
++ return -EINVAL;
++ }
++ }
++
++ sunxi_mmc_init_idma_des(smc_host, data);
++
++ temp = mci_readl(smc_host, REG_GCTRL);
++ temp |= SDXC_DMA_ENABLE_BIT;
++ mci_writel(smc_host, REG_GCTRL, temp);
++ temp |= SDXC_DMA_RESET;
++ mci_writel(smc_host, REG_GCTRL, temp);
++ mci_writel(smc_host, REG_DMAC, SDXC_IDMAC_SOFT_RESET);
++
++ if (!(data->flags & MMC_DATA_WRITE))
++ mci_writel(smc_host, REG_IDIE, SDXC_IDMAC_RECEIVE_INTERRUPT);
++
++ mci_writel(smc_host, REG_DMAC, SDXC_IDMAC_FIX_BURST | SDXC_IDMAC_IDMA_ON);
++
++ return 0;
++}
++
++static void sunxi_mmc_send_manual_stop(struct sunxi_mmc_host *host,
++ struct mmc_request *req)
++{
++ u32 cmd_val = SDXC_START | SDXC_RESP_EXPIRE | SDXC_STOP_ABORT_CMD
++ | SDXC_CHECK_RESPONSE_CRC | MMC_STOP_TRANSMISSION;
++ u32 ri = 0;
++ unsigned long expire = jiffies + msecs_to_jiffies(1000);
++
++ mci_writel(host, REG_CARG, 0);
++ mci_writel(host, REG_CMDR, cmd_val);
++
++ do {
++ ri = mci_readl(host, REG_RINTR);
++ } while (!(ri & (SDXC_COMMAND_DONE | SDXC_INTERRUPT_ERROR_BIT)) &&
++ time_before(jiffies, expire));
++
++ if (ri & SDXC_INTERRUPT_ERROR_BIT) {
++ dev_err(mmc_dev(host->mmc), "send stop command failed\n");
++ if (req->stop)
++ req->stop->resp[0] = -ETIMEDOUT;
++ } else {
++ if (req->stop)
++ req->stop->resp[0] = mci_readl(host, REG_RESP0);
++ }
++
++ mci_writel(host, REG_RINTR, 0xffff);
++}
++
++static void sunxi_mmc_dump_errinfo(struct sunxi_mmc_host *smc_host)
++{
++ struct mmc_command *cmd = smc_host->mrq->cmd;
++ struct mmc_data *data = smc_host->mrq->data;
++
++ /* For some cmds timeout is normal with sd/mmc cards */
++ if ((smc_host->int_sum & SDXC_INTERRUPT_ERROR_BIT) == SDXC_RESP_TIMEOUT &&
++ (cmd->opcode == SD_IO_SEND_OP_COND || cmd->opcode == SD_IO_RW_DIRECT))
++ return;
++
++ dev_err(mmc_dev(smc_host->mmc),
++ "smc %d err, cmd %d,%s%s%s%s%s%s%s%s%s%s !!\n",
++ smc_host->mmc->index, cmd->opcode,
++ data ? (data->flags & MMC_DATA_WRITE ? " WR" : " RD") : "",
++ smc_host->int_sum & SDXC_RESP_ERROR ? " RE" : "",
++ smc_host->int_sum & SDXC_RESP_CRC_ERROR ? " RCE" : "",
++ smc_host->int_sum & SDXC_DATA_CRC_ERROR ? " DCE" : "",
++ smc_host->int_sum & SDXC_RESP_TIMEOUT ? " RTO" : "",
++ smc_host->int_sum & SDXC_DATA_TIMEOUT ? " DTO" : "",
++ smc_host->int_sum & SDXC_FIFO_RUN_ERROR ? " FE" : "",
++ smc_host->int_sum & SDXC_HARD_WARE_LOCKED ? " HL" : "",
++ smc_host->int_sum & SDXC_START_BIT_ERROR ? " SBE" : "",
++ smc_host->int_sum & SDXC_END_BIT_ERROR ? " EBE" : ""
++ );
++}
++
++static void sunxi_mmc_finalize_request(struct sunxi_mmc_host *host)
++{
++ struct mmc_request *mrq;
++ unsigned long iflags;
++
++ spin_lock_irqsave(&host->lock, iflags);
++
++ mrq = host->mrq;
++ if (!mrq) {
++ spin_unlock_irqrestore(&host->lock, iflags);
++ dev_err(mmc_dev(host->mmc), "no request to finalize\n");
++ return;
++ }
++
++ if (host->int_sum & SDXC_INTERRUPT_ERROR_BIT) {
++ sunxi_mmc_dump_errinfo(host);
++ mrq->cmd->error = -ETIMEDOUT;
++ if (mrq->data)
++ mrq->data->error = -ETIMEDOUT;
++ if (mrq->stop)
++ mrq->stop->error = -ETIMEDOUT;
++ } else {
++ if (mrq->cmd->flags & MMC_RSP_136) {
++ mrq->cmd->resp[0] = mci_readl(host, REG_RESP3);
++ mrq->cmd->resp[1] = mci_readl(host, REG_RESP2);
++ mrq->cmd->resp[2] = mci_readl(host, REG_RESP1);
++ mrq->cmd->resp[3] = mci_readl(host, REG_RESP0);
++ } else {
++ mrq->cmd->resp[0] = mci_readl(host, REG_RESP0);
++ }
++ if (mrq->data)
++ mrq->data->bytes_xfered =
++ mrq->data->blocks * mrq->data->blksz;
++ }
++
++ if (mrq->data) {
++ struct mmc_data *data = mrq->data;
++ u32 temp;
++
++ mci_writel(host, REG_IDST, 0x337);
++ mci_writel(host, REG_DMAC, 0);
++ temp = mci_readl(host, REG_GCTRL);
++ mci_writel(host, REG_GCTRL, temp|SDXC_DMA_RESET);
++ temp &= ~SDXC_DMA_ENABLE_BIT;
++ mci_writel(host, REG_GCTRL, temp);
++ temp |= SDXC_FIFO_RESET;
++ mci_writel(host, REG_GCTRL, temp);
++ dma_unmap_sg(mmc_dev(host->mmc), data->sg, data->sg_len,
++ sunxi_mmc_get_dma_dir(data));
++ }
++
++ mci_writel(host, REG_RINTR, 0xffff);
++
++ dev_dbg(mmc_dev(host->mmc), "req done, resp %08x %08x %08x %08x\n",
++ mrq->cmd->resp[0], mrq->cmd->resp[1],
++ mrq->cmd->resp[2], mrq->cmd->resp[3]);
++
++ host->mrq = NULL;
++ host->int_sum = 0;
++ host->wait_dma = 0;
++
++ spin_unlock_irqrestore(&host->lock, iflags);
++
++ if (mrq->data && mrq->data->error) {
++ dev_err(mmc_dev(host->mmc),
++ "data error, sending stop command\n");
++ sunxi_mmc_send_manual_stop(host, mrq);
++ }
++
++ mmc_request_done(host->mmc, mrq);
++}
++
++static irqreturn_t sunxi_mmc_irq(int irq, void *dev_id)
++{
++ struct sunxi_mmc_host *host = dev_id;
++ u32 finalize = 0;
++ u32 sdio_int = 0;
++ u32 msk_int;
++ u32 idma_int;
++
++ spin_lock(&host->lock);
++
++ idma_int = mci_readl(host, REG_IDST);
++ msk_int = mci_readl(host, REG_MISTA);
++
++ dev_dbg(mmc_dev(host->mmc), "irq: rq %p mi %08x idi %08x\n",
++ host->mrq, msk_int, idma_int);
++
++ if (host->mrq) {
++ if (idma_int & SDXC_IDMAC_RECEIVE_INTERRUPT)
++ host->wait_dma = 0;
++
++ host->int_sum |= msk_int;
++
++ /* Wait for COMMAND_DONE on RESPONSE_TIMEOUT before finishing the req */
++ if ((host->int_sum & SDXC_RESP_TIMEOUT) &&
++ !(host->int_sum & SDXC_COMMAND_DONE))
++ mci_writel(host, REG_IMASK,
++ host->sdio_imask | SDXC_COMMAND_DONE);
++ else if (host->int_sum & SDXC_INTERRUPT_ERROR_BIT)
++ finalize = 1; /* Don't wait for dma on error */
++ else if (host->int_sum & SDXC_INTERRUPT_DONE_BIT && !host->wait_dma)
++ finalize = 1; /* Done */
++
++ if (finalize) {
++ mci_writel(host, REG_IMASK, host->sdio_imask);
++ mci_writel(host, REG_IDIE, 0);
++ }
++ }
++
++ if (msk_int & SDXC_SDIO_INTERRUPT)
++ sdio_int = 1;
++
++ mci_writel(host, REG_RINTR, msk_int);
++ mci_writel(host, REG_IDST, idma_int);
++
++ spin_unlock(&host->lock);
++
++ if (finalize)
++ tasklet_schedule(&host->tasklet);
++
++ if (sdio_int)
++ mmc_signal_sdio_irq(host->mmc);
++
++ return IRQ_HANDLED;
++}
++
++static void sunxi_mmc_tasklet(unsigned long data)
++{
++ struct sunxi_mmc_host *smc_host = (struct sunxi_mmc_host *) data;
++ sunxi_mmc_finalize_request(smc_host);
++}
++
++static void sunxi_mmc_oclk_onoff(struct sunxi_mmc_host *host, u32 oclk_en)
++{
++ unsigned long expire = jiffies + msecs_to_jiffies(2000);
++ u32 rval;
++
++ rval = mci_readl(host, REG_CLKCR);
++ rval &= ~(SDXC_CARD_CLOCK_ON | SDXC_LOW_POWER_ON);
++
++ if (oclk_en)
++ rval |= SDXC_CARD_CLOCK_ON;
++
++ mci_writel(host, REG_CLKCR, rval);
++
++ rval = SDXC_START | SDXC_UPCLK_ONLY | SDXC_WAIT_PRE_OVER;
++ if (host->voltage_switching)
++ rval |= SDXC_VOLTAGE_SWITCH;
++ mci_writel(host, REG_CMDR, rval);
++
++ do {
++ rval = mci_readl(host, REG_CMDR);
++ } while (time_before(jiffies, expire) && (rval & SDXC_START));
++
++ if (rval & SDXC_START) {
++ dev_err(mmc_dev(host->mmc), "fatal err update clk timeout\n");
++ host->ferror = 1;
++ }
++}
++
++struct sunxi_mmc_clk_dly mmc_clk_dly[MMC_CLK_MOD_NUM] = {
++ { MMC_CLK_400K, 0, 7 },
++ { MMC_CLK_25M, 0, 5 },
++ { MMC_CLK_50M, 3, 5 },
++ { MMC_CLK_50MDDR, 2, 4 },
++ { MMC_CLK_50MDDR_8BIT, 2, 4 },
++ { MMC_CLK_100M, 1, 4 },
++ { MMC_CLK_200M, 1, 4 },
++};
++
++static void sunxi_mmc_clk_set_rate(struct sunxi_mmc_host *smc_host,
++ unsigned int rate)
++{
++ u32 newrate;
++ u32 src_clk;
++ u32 oclk_dly;
++ u32 sclk_dly;
++ u32 temp;
++ struct sunxi_mmc_clk_dly *dly = NULL;
++ struct clk_hw *hw = __clk_get_hw(smc_host->clk_mod);
++
++ newrate = clk_round_rate(smc_host->clk_mod, rate);
++ if (smc_host->clk_mod_rate == newrate) {
++ dev_dbg(mmc_dev(smc_host->mmc), "clk already %d, rounded %d\n",
++ rate, newrate);
++ return;
++ }
++
++ dev_dbg(mmc_dev(smc_host->mmc), "setting clk to %d, rounded %d\n",
++ rate, newrate);
++
++ /* setting clock rate */
++ clk_disable(smc_host->clk_mod);
++ clk_set_rate(smc_host->clk_mod, newrate);
++ clk_enable(smc_host->clk_mod);
++ smc_host->clk_mod_rate = newrate = clk_get_rate(smc_host->clk_mod);
++ dev_dbg(mmc_dev(smc_host->mmc), "clk is now %d\n", newrate);
++
++ sunxi_mmc_oclk_onoff(smc_host, 0);
++ /* clear internal divider */
++ temp = mci_readl(smc_host, REG_CLKCR);
++ temp &= ~0xff;
++ mci_writel(smc_host, REG_CLKCR, temp);
++
++ /* determine delays */
++ if (rate <= 400000) {
++ dly = &mmc_clk_dly[MMC_CLK_400K];
++ } else if (rate <= 25000000) {
++ dly = &mmc_clk_dly[MMC_CLK_25M];
++ } else if (rate <= 50000000) {
++ if (smc_host->ddr) {
++ if (smc_host->bus_width == 8)
++ dly = &mmc_clk_dly[MMC_CLK_50MDDR_8BIT];
++ else
++ dly = &mmc_clk_dly[MMC_CLK_50MDDR];
++ } else {
++ dly = &mmc_clk_dly[MMC_CLK_50M];
++ }
++ } else if (rate <= 104000000) {
++ dly = &mmc_clk_dly[MMC_CLK_100M];
++ } else if (rate <= 208000000) {
++ dly = &mmc_clk_dly[MMC_CLK_200M];
++ } else {
++ dly = &mmc_clk_dly[MMC_CLK_50M];
++ }
++
++ oclk_dly = dly->oclk_dly;
++ sclk_dly = dly->sclk_dly;
++
++ src_clk = clk_get_rate(clk_get_parent(smc_host->clk_mod));
++
++ if (src_clk >= 300000000 && src_clk <= 400000000) {
++ if (oclk_dly)
++ oclk_dly--;
++ if (sclk_dly)
++ sclk_dly--;
++ }
++
++ clk_sunxi_mmc_phase_control(hw, sclk_dly, oclk_dly);
++ sunxi_mmc_oclk_onoff(smc_host, 1);
++
++ /* oclk_onoff sets various irq status bits, clear these */
++ mci_writel(smc_host, REG_RINTR,
++ mci_readl(smc_host, REG_RINTR) & ~SDXC_SDIO_INTERRUPT);
++}
++
++static void sunxi_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
++{
++ struct sunxi_mmc_host *host = mmc_priv(mmc);
++ u32 temp;
++ s32 err;
++
++ /* Set the power state */
++ switch (ios->power_mode) {
++ case MMC_POWER_ON:
++ break;
++
++ case MMC_POWER_UP:
++ if (!IS_ERR(host->vmmc)) {
++ mmc_regulator_set_ocr(host->mmc, host->vmmc, ios->vdd);
++ udelay(200);
++ }
++
++ err = sunxi_mmc_init_host(mmc);
++ if (err) {
++ host->ferror = 1;
++ return;
++ }
++ enable_irq(host->irq);
++
++ dev_dbg(mmc_dev(host->mmc), "power on!\n");
++ host->ferror = 0;
++ break;
++
++ case MMC_POWER_OFF:
++ dev_dbg(mmc_dev(host->mmc), "power off!\n");
++ disable_irq(host->irq);
++ sunxi_mmc_exit_host(host);
++ if (!IS_ERR(host->vmmc))
++ mmc_regulator_set_ocr(host->mmc, host->vmmc, 0);
++ host->ferror = 0;
++ break;
++ }
++
++ /* set bus width */
++ switch (ios->bus_width) {
++ case MMC_BUS_WIDTH_1:
++ mci_writel(host, REG_WIDTH, SDXC_WIDTH1);
++ host->bus_width = 1;
++ break;
++ case MMC_BUS_WIDTH_4:
++ mci_writel(host, REG_WIDTH, SDXC_WIDTH4);
++ host->bus_width = 4;
++ break;
++ case MMC_BUS_WIDTH_8:
++ mci_writel(host, REG_WIDTH, SDXC_WIDTH8);
++ host->bus_width = 8;
++ break;
++ }
++
++ /* set ddr mode */
++ temp = mci_readl(host, REG_GCTRL);
++ if (ios->timing == MMC_TIMING_UHS_DDR50) {
++ temp |= SDXC_DDR_MODE;
++ host->ddr = 1;
++ } else {
++ temp &= ~SDXC_DDR_MODE;
++ host->ddr = 0;
++ }
++ mci_writel(host, REG_GCTRL, temp);
++
++ /* set up clock */
++ if (ios->clock && ios->power_mode) {
++ dev_dbg(mmc_dev(host->mmc), "ios->clock: %d\n", ios->clock);
++ sunxi_mmc_clk_set_rate(host, ios->clock);
++ usleep_range(50000, 55000);
++ }
++}
++
++static void sunxi_mmc_enable_sdio_irq(struct mmc_host *mmc, int enable)
++{
++ struct sunxi_mmc_host *smc_host = mmc_priv(mmc);
++ unsigned long flags;
++ u32 imask;
++
++ spin_lock_irqsave(&smc_host->lock, flags);
++
++ imask = mci_readl(smc_host, REG_IMASK);
++ if (enable) {
++ smc_host->sdio_imask = SDXC_SDIO_INTERRUPT;
++ imask |= SDXC_SDIO_INTERRUPT;
++ } else {
++ smc_host->sdio_imask = 0;
++ imask &= ~SDXC_SDIO_INTERRUPT;
++ }
++ mci_writel(smc_host, REG_IMASK, imask);
++ spin_unlock_irqrestore(&smc_host->lock, flags);
++}
++
++static void sunxi_mmc_hw_reset(struct mmc_host *mmc)
++{
++ struct sunxi_mmc_host *smc_host = mmc_priv(mmc);
++ mci_writel(smc_host, REG_HWRST, 0);
++ udelay(10);
++ mci_writel(smc_host, REG_HWRST, 1);
++ udelay(300);
++}
++
++static void sunxi_mmc_request(struct mmc_host *mmc, struct mmc_request *mrq)
++{
++ struct sunxi_mmc_host *host = mmc_priv(mmc);
++ struct mmc_command *cmd = mrq->cmd;
++ struct mmc_data *data = mrq->data;
++ unsigned long iflags;
++ u32 imask = SDXC_INTERRUPT_ERROR_BIT;
++ u32 cmd_val = SDXC_START | (cmd->opcode & 0x3f);
++ u32 byte_cnt = 0;
++ int ret;
++
++ if (!mmc_gpio_get_cd(mmc) || host->ferror) {
++ dev_dbg(mmc_dev(host->mmc), "no medium present\n");
++ mrq->cmd->error = -ENOMEDIUM;
++ mmc_request_done(mmc, mrq);
++ return;
++ }
++
++ if (data) {
++ byte_cnt = data->blksz * data->blocks;
++ mci_writel(host, REG_BLKSZ, data->blksz);
++ mci_writel(host, REG_BCNTR, byte_cnt);
++ ret = sunxi_mmc_prepare_dma(host, data);
++ if (ret < 0) {
++ dev_err(mmc_dev(host->mmc), "prepare DMA failed\n");
++ cmd->error = ret;
++ cmd->data->error = ret;
++ mmc_request_done(host->mmc, mrq);
++ return;
++ }
++ }
++
++ if (cmd->opcode == MMC_GO_IDLE_STATE) {
++ cmd_val |= SDXC_SEND_INIT_SEQUENCE;
++ imask |= SDXC_COMMAND_DONE;
++ }
++
++ if (cmd->opcode == SD_SWITCH_VOLTAGE) {
++ cmd_val |= SDXC_VOLTAGE_SWITCH;
++ imask |= SDXC_VOLTAGE_CHANGE_DONE;
++ host->voltage_switching = 1;
++ sunxi_mmc_oclk_onoff(host, 1);
++ }
++
++ if (cmd->flags & MMC_RSP_PRESENT) {
++ cmd_val |= SDXC_RESP_EXPIRE;
++ if (cmd->flags & MMC_RSP_136)
++ cmd_val |= SDXC_LONG_RESPONSE;
++ if (cmd->flags & MMC_RSP_CRC)
++ cmd_val |= SDXC_CHECK_RESPONSE_CRC;
++
++ if ((cmd->flags & MMC_CMD_MASK) == MMC_CMD_ADTC) {
++ cmd_val |= SDXC_DATA_EXPIRE | SDXC_WAIT_PRE_OVER;
++ if (cmd->data->flags & MMC_DATA_STREAM) {
++ imask |= SDXC_AUTO_COMMAND_DONE;
++ cmd_val |= SDXC_SEQUENCE_MODE | SDXC_SEND_AUTO_STOP;
++ }
++ if (cmd->data->stop) {
++ imask |= SDXC_AUTO_COMMAND_DONE;
++ cmd_val |= SDXC_SEND_AUTO_STOP;
++ } else
++ imask |= SDXC_DATA_OVER;
++
++ if (cmd->data->flags & MMC_DATA_WRITE)
++ cmd_val |= SDXC_WRITE;
++ else
++ host->wait_dma = 1;
++ } else
++ imask |= SDXC_COMMAND_DONE;
++ } else
++ imask |= SDXC_COMMAND_DONE;
++
++ dev_dbg(mmc_dev(host->mmc), "cmd %d(%08x) arg %x ie 0x%08x len %d\n",
++ cmd_val & 0x3f, cmd_val, cmd->arg, imask,
++ mrq->data ? mrq->data->blksz * mrq->data->blocks : 0);
++
++ spin_lock_irqsave(&host->lock, iflags);
++ host->mrq = mrq;
++ mci_writel(host, REG_IMASK, host->sdio_imask | imask);
++ spin_unlock_irqrestore(&host->lock, iflags);
++
++ mci_writel(host, REG_CARG, cmd->arg);
++ mci_writel(host, REG_CMDR, cmd_val);
++}
++
++static const struct of_device_id sunxi_mmc_of_match[] = {
++ { .compatible = "allwinner,sun4i-a10-mmc", },
++ { .compatible = "allwinner,sun5i-a13-mmc", },
++ { /* sentinel */ }
++};
++MODULE_DEVICE_TABLE(of, sunxi_mmc_of_match);
++
++static struct mmc_host_ops sunxi_mmc_ops = {
++ .request = sunxi_mmc_request,
++ .set_ios = sunxi_mmc_set_ios,
++ .get_ro = mmc_gpio_get_ro,
++ .get_cd = mmc_gpio_get_cd,
++ .enable_sdio_irq = sunxi_mmc_enable_sdio_irq,
++ .hw_reset = sunxi_mmc_hw_reset,
++};
++
++static int sunxi_mmc_resource_request(struct sunxi_mmc_host *host,
++ struct platform_device *pdev)
++{
++ struct device_node *np = pdev->dev.of_node;
++ int ret;
++
++ if (of_device_is_compatible(np, "allwinner,sun4i-a10-mmc"))
++ host->idma_des_size_bits = 13;
++ else
++ host->idma_des_size_bits = 16;
++
++ host->vmmc = devm_regulator_get_optional(&pdev->dev, "vmmc");
++ if (IS_ERR(host->vmmc) && PTR_ERR(host->vmmc) == -EPROBE_DEFER)
++ return -EPROBE_DEFER;
++
++ host->reg_base = devm_ioremap_resource(&pdev->dev,
++ platform_get_resource(pdev, IORESOURCE_MEM, 0));
++ if (IS_ERR(host->reg_base))
++ return PTR_ERR(host->reg_base);
++
++ host->clk_ahb = devm_clk_get(&pdev->dev, "ahb");
++ if (IS_ERR(host->clk_ahb)) {
++ dev_err(&pdev->dev, "Could not get ahb clock\n");
++ return PTR_ERR(host->clk_ahb);
++ }
++
++ host->clk_mod = devm_clk_get(&pdev->dev, "mod");
++ if (IS_ERR(host->clk_mod)) {
++ dev_err(&pdev->dev, "Could not get mod clock\n");
++ return PTR_ERR(host->clk_mod);
++ }
++
++ /* Make sure the controller is in a sane state before enabling irqs */
++ ret = sunxi_mmc_init_host(host->mmc);
++ if (ret)
++ return ret;
++
++ host->irq = platform_get_irq(pdev, 0);
++ ret = devm_request_irq(&pdev->dev, host->irq, sunxi_mmc_irq, 0,
++ "sunxi-mmc", host);
++ if (ret == 0)
++ disable_irq(host->irq);
++
++ /* And put it back in reset */
++ sunxi_mmc_exit_host(host);
++
++ return ret;
++}
++
++static int sunxi_mmc_probe(struct platform_device *pdev)
++{
++ struct sunxi_mmc_host *host;
++ struct mmc_host *mmc;
++ int ret;
++
++ mmc = mmc_alloc_host(sizeof(struct sunxi_mmc_host), &pdev->dev);
++ if (!mmc) {
++ dev_err(&pdev->dev, "mmc alloc host failed\n");
++ return -ENOMEM;
++ }
++
++ host = mmc_priv(mmc);
++ host->mmc = mmc;
++ spin_lock_init(&host->lock);
++ tasklet_init(&host->tasklet, sunxi_mmc_tasklet, (unsigned long)host);
++
++ ret = sunxi_mmc_resource_request(host, pdev);
++ if (ret)
++ goto error_free_host;
++
++ host->sg_cpu = dma_alloc_coherent(&pdev->dev, PAGE_SIZE,
++ &host->sg_dma, GFP_KERNEL);
++ if (!host->sg_cpu) {
++ dev_err(&pdev->dev, "Failed to allocate DMA descriptor mem\n");
++ ret = -ENOMEM;
++ goto error_free_host;
++ }
++
++ mmc->ops = &sunxi_mmc_ops;
++ mmc->max_blk_count = 8192;
++ mmc->max_blk_size = 4096;
++ mmc->max_segs = PAGE_SIZE / sizeof(struct sunxi_idma_des);
++ mmc->max_seg_size = (1 << host->idma_des_size_bits);
++ mmc->max_req_size = mmc->max_seg_size * mmc->max_segs;
++ /* 400kHz ~ 50MHz */
++ mmc->f_min = 400000;
++ mmc->f_max = 50000000;
++ /* available voltages */
++ if (!IS_ERR(host->vmmc))
++ mmc->ocr_avail = mmc_regulator_get_ocrmask(host->vmmc);
++ else
++ mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34;
++
++ mmc->caps |= MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED |
++ MMC_CAP_SDIO_IRQ;
++ mmc->caps2 |= MMC_CAP2_NO_PRESCAN_POWERUP;
++
++ ret = mmc_of_parse(mmc);
++ if (ret)
++ goto error_free_dma;
++
++ ret = mmc_add_host(mmc);
++ if (ret)
++ goto error_free_dma;
++
++ dev_info(&pdev->dev, "base:0x%p irq:%u\n", host->reg_base, host->irq);
++ platform_set_drvdata(pdev, mmc);
++ return 0;
++
++error_free_dma:
++ dma_free_coherent(&pdev->dev, PAGE_SIZE, host->sg_cpu, host->sg_dma);
++error_free_host:
++ mmc_free_host(mmc);
++ return ret;
++}
++
++static int sunxi_mmc_remove(struct platform_device *pdev)
++{
++ struct mmc_host *mmc = platform_get_drvdata(pdev);
++ struct sunxi_mmc_host *host = mmc_priv(mmc);
++
++ mmc_remove_host(mmc);
++ sunxi_mmc_exit_host(host);
++ tasklet_disable(&host->tasklet);
++ dma_free_coherent(&pdev->dev, PAGE_SIZE, host->sg_cpu, host->sg_dma);
++ mmc_free_host(mmc);
++
++ return 0;
++}
++
++static struct platform_driver sunxi_mmc_driver = {
++ .driver = {
++ .name = "sunxi-mmc",
++ .owner = THIS_MODULE,
++ .of_match_table = of_match_ptr(sunxi_mmc_of_match),
++ },
++ .probe = sunxi_mmc_probe,
++ .remove = sunxi_mmc_remove,
++};
++module_platform_driver(sunxi_mmc_driver);
++
++MODULE_DESCRIPTION("Allwinner's SD/MMC Card Controller Driver");
++MODULE_LICENSE("GPL v2");
++MODULE_AUTHOR("David Lanzendörfer <david.lanzendoerfer@o2s.ch>");
++MODULE_ALIAS("platform:sunxi-mmc");
+diff --git a/drivers/mmc/host/sunxi-mmc.h b/drivers/mmc/host/sunxi-mmc.h
+new file mode 100644
+index 0000000..84bab99
+--- /dev/null
++++ b/drivers/mmc/host/sunxi-mmc.h
+@@ -0,0 +1,238 @@
++/*
++ * Driver for sunxi SD/MMC host controllers
++ * (C) Copyright 2007-2011 Reuuimlla Technology Co., Ltd.
++ * (C) Copyright 2007-2011 Aaron Maoye <leafy.myeh@reuuimllatech.com>
++ * (C) Copyright 2013-2014 O2S GmbH <www.o2s.ch>
++ * (C) Copyright 2013-2014 David Lanzendörfer <david.lanzendoerfer@o2s.ch>
++ * (C) Copyright 2013-2014 Hans de Goede <hdegoede@redhat.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.
++ */
++
++#ifndef __SUNXI_MMC_H__
++#define __SUNXI_MMC_H__
++
++/* register offset definitions */
++#define SDXC_REG_GCTRL (0x00) /* SMC Global Control Register */
++#define SDXC_REG_CLKCR (0x04) /* SMC Clock Control Register */
++#define SDXC_REG_TMOUT (0x08) /* SMC Time Out Register */
++#define SDXC_REG_WIDTH (0x0C) /* SMC Bus Width Register */
++#define SDXC_REG_BLKSZ (0x10) /* SMC Block Size Register */
++#define SDXC_REG_BCNTR (0x14) /* SMC Byte Count Register */
++#define SDXC_REG_CMDR (0x18) /* SMC Command Register */
++#define SDXC_REG_CARG (0x1C) /* SMC Argument Register */
++#define SDXC_REG_RESP0 (0x20) /* SMC Response Register 0 */
++#define SDXC_REG_RESP1 (0x24) /* SMC Response Register 1 */
++#define SDXC_REG_RESP2 (0x28) /* SMC Response Register 2 */
++#define SDXC_REG_RESP3 (0x2C) /* SMC Response Register 3 */
++#define SDXC_REG_IMASK (0x30) /* SMC Interrupt Mask Register */
++#define SDXC_REG_MISTA (0x34) /* SMC Masked Interrupt Status Register */
++#define SDXC_REG_RINTR (0x38) /* SMC Raw Interrupt Status Register */
++#define SDXC_REG_STAS (0x3C) /* SMC Status Register */
++#define SDXC_REG_FTRGL (0x40) /* SMC FIFO Threshold Watermark Registe */
++#define SDXC_REG_FUNS (0x44) /* SMC Function Select Register */
++#define SDXC_REG_CBCR (0x48) /* SMC CIU Byte Count Register */
++#define SDXC_REG_BBCR (0x4C) /* SMC BIU Byte Count Register */
++#define SDXC_REG_DBGC (0x50) /* SMC Debug Enable Register */
++#define SDXC_REG_HWRST (0x78) /* SMC Card Hardware Reset for Register */
++#define SDXC_REG_DMAC (0x80) /* SMC IDMAC Control Register */
++#define SDXC_REG_DLBA (0x84) /* SMC IDMAC Descriptor List Base Addre */
++#define SDXC_REG_IDST (0x88) /* SMC IDMAC Status Register */
++#define SDXC_REG_IDIE (0x8C) /* SMC IDMAC Interrupt Enable Register */
++#define SDXC_REG_CHDA (0x90)
++#define SDXC_REG_CBDA (0x94)
++
++#define mci_readl(host, reg) \
++ readl((host)->reg_base + SDXC_##reg)
++#define mci_writel(host, reg, value) \
++ writel((value), (host)->reg_base + SDXC_##reg)
++
++/* global control register bits */
++#define SDXC_SOFT_RESET BIT(0)
++#define SDXC_FIFO_RESET BIT(1)
++#define SDXC_DMA_RESET BIT(2)
++#define SDXC_HARDWARE_RESET (SDXC_SOFT_RESET|SDXC_FIFO_RESET|SDXC_DMA_RESET)
++#define SDXC_INTERRUPT_ENABLE_BIT BIT(4)
++#define SDXC_DMA_ENABLE_BIT BIT(5)
++#define SDXC_DEBOUNCE_ENABLE_BIT BIT(8)
++#define SDXC_POSEDGE_LATCH_DATA BIT(9)
++#define SDXC_DDR_MODE BIT(10)
++#define SDXC_MEMORY_ACCESS_DONE BIT(29)
++#define SDXC_ACCESS_DONE_DIRECT BIT(30)
++#define SDXC_ACCESS_BY_AHB BIT(31)
++#define SDXC_ACCESS_BY_DMA (0U << 31)
++/* clock control bits */
++#define SDXC_CARD_CLOCK_ON BIT(16)
++#define SDXC_LOW_POWER_ON BIT(17)
++/* bus width */
++#define SDXC_WIDTH1 (0)
++#define SDXC_WIDTH4 (1)
++#define SDXC_WIDTH8 (2)
++/* smc command bits */
++#define SDXC_RESP_EXPIRE BIT(6)
++#define SDXC_LONG_RESPONSE BIT(7)
++#define SDXC_CHECK_RESPONSE_CRC BIT(8)
++#define SDXC_DATA_EXPIRE BIT(9)
++#define SDXC_WRITE BIT(10)
++#define SDXC_SEQUENCE_MODE BIT(11)
++#define SDXC_SEND_AUTO_STOP BIT(12)
++#define SDXC_WAIT_PRE_OVER BIT(13)
++#define SDXC_STOP_ABORT_CMD BIT(14)
++#define SDXC_SEND_INIT_SEQUENCE BIT(15)
++#define SDXC_UPCLK_ONLY BIT(21)
++#define SDXC_READ_CEATA_DEV BIT(22)
++#define SDXC_CCS_EXPIRE BIT(23)
++#define SDXC_ENABLE_BIT_BOOT BIT(24)
++#define SDXC_ALT_BOOT_OPTIONS BIT(25)
++#define SDXC_BOOT_ACK_EXPIRE BIT(26)
++#define SDXC_BOOT_ABORT BIT(27)
++#define SDXC_VOLTAGE_SWITCH BIT(28)
++#define SDXC_USE_HOLD_REGISTER BIT(29)
++#define SDXC_START BIT(31)
++/* interrupt bits */
++#define SDXC_RESP_ERROR BIT(1)
++#define SDXC_COMMAND_DONE BIT(2)
++#define SDXC_DATA_OVER BIT(3)
++#define SDXC_TX_DATA_REQUEST BIT(4)
++#define SDXC_RX_DATA_REQUEST BIT(5)
++#define SDXC_RESP_CRC_ERROR BIT(6)
++#define SDXC_DATA_CRC_ERROR BIT(7)
++#define SDXC_RESP_TIMEOUT BIT(8)
++#define SDXC_DATA_TIMEOUT BIT(9)
++#define SDXC_VOLTAGE_CHANGE_DONE BIT(10)
++#define SDXC_FIFO_RUN_ERROR BIT(11)
++#define SDXC_HARD_WARE_LOCKED BIT(12)
++#define SDXC_START_BIT_ERROR BIT(13)
++#define SDXC_AUTO_COMMAND_DONE BIT(14)
++#define SDXC_END_BIT_ERROR BIT(15)
++#define SDXC_SDIO_INTERRUPT BIT(16)
++#define SDXC_CARD_INSERT BIT(30)
++#define SDXC_CARD_REMOVE BIT(31)
++#define SDXC_INTERRUPT_ERROR_BIT (SDXC_RESP_ERROR | SDXC_RESP_CRC_ERROR | \
++ SDXC_DATA_CRC_ERROR | SDXC_RESP_TIMEOUT | \
++ SDXC_DATA_TIMEOUT | SDXC_FIFO_RUN_ERROR | \
++ SDXC_HARD_WARE_LOCKED | SDXC_START_BIT_ERROR | \
++ SDXC_END_BIT_ERROR) /* 0xbbc2 */
++#define SDXC_INTERRUPT_DONE_BIT (SDXC_AUTO_COMMAND_DONE | SDXC_DATA_OVER | \
++ SDXC_COMMAND_DONE | SDXC_VOLTAGE_CHANGE_DONE)
++/* status */
++#define SDXC_RXWL_FLAG BIT(0)
++#define SDXC_TXWL_FLAG BIT(1)
++#define SDXC_FIFO_EMPTY BIT(2)
++#define SDXC_FIFO_FULL BIT(3)
++#define SDXC_CARD_PRESENT BIT(8)
++#define SDXC_CARD_DATA_BUSY BIT(9)
++#define SDXC_DATA_FSM_BUSY BIT(10)
++#define SDXC_DMA_REQUEST BIT(31)
++#define SDXC_FIFO_SIZE (16)
++/* Function select */
++#define SDXC_CEATA_ON (0xceaaU << 16)
++#define SDXC_SEND_IRQ_RESPONSE BIT(0)
++#define SDXC_SDIO_READ_WAIT BIT(1)
++#define SDXC_ABORT_READ_DATA BIT(2)
++#define SDXC_SEND_CCSD BIT(8)
++#define SDXC_SEND_AUTO_STOPCCSD BIT(9)
++#define SDXC_CEATA_DEV_INTERRUPT_ENABLE_BIT BIT(10)
++/* IDMA controller bus mod bit field */
++#define SDXC_IDMAC_SOFT_RESET BIT(0)
++#define SDXC_IDMAC_FIX_BURST BIT(1)
++#define SDXC_IDMAC_IDMA_ON BIT(7)
++#define SDXC_IDMAC_REFETCH_DES BIT(31)
++/* IDMA status bit field */
++#define SDXC_IDMAC_TRANSMIT_INTERRUPT BIT(0)
++#define SDXC_IDMAC_RECEIVE_INTERRUPT BIT(1)
++#define SDXC_IDMAC_FATAL_BUS_ERROR BIT(2)
++#define SDXC_IDMAC_DESTINATION_INVALID BIT(4)
++#define SDXC_IDMAC_CARD_ERROR_SUM BIT(5)
++#define SDXC_IDMAC_NORMAL_INTERRUPT_SUM BIT(8)
++#define SDXC_IDMAC_ABNORMAL_INTERRUPT_SUM BIT(9)
++#define SDXC_IDMAC_HOST_ABORT_INTERRUPT_TX BIT(10)
++#define SDXC_IDMAC_HOST_ABORT_INTERRUPT_RX BIT(10)
++#define SDXC_IDMAC_IDLE (0U << 13)
++#define SDXC_IDMAC_SUSPEND (1U << 13)
++#define SDXC_IDMAC_DESC_READ (2U << 13)
++#define SDXC_IDMAC_DESC_CHECK (3U << 13)
++#define SDXC_IDMAC_READ_REQUEST_WAIT (4U << 13)
++#define SDXC_IDMAC_WRITE_REQUEST_WAIT (5U << 13)
++#define SDXC_IDMAC_READ (6U << 13)
++#define SDXC_IDMAC_WRITE (7U << 13)
++#define SDXC_IDMAC_DESC_CLOSE (8U << 13)
++
++/*
++* If the idma-des-size-bits of property is ie 13, bufsize bits are:
++* Bits 0-12: buf1 size
++* Bits 13-25: buf2 size
++* Bits 26-31: not used
++* Since we only ever set buf1 size, we can simply store it directly.
++*/
++#define SDXC_IDMAC_DES0_DIC BIT(1) /* disable interrupt on completion */
++#define SDXC_IDMAC_DES0_LD BIT(2) /* last descriptor */
++#define SDXC_IDMAC_DES0_FD BIT(3) /* first descriptor */
++#define SDXC_IDMAC_DES0_CH BIT(4) /* chain mode */
++#define SDXC_IDMAC_DES0_ER BIT(5) /* end of ring */
++#define SDXC_IDMAC_DES0_CES BIT(30) /* card error summary */
++#define SDXC_IDMAC_DES0_OWN BIT(31) /* 1-idma owns it, 0-host owns it */
++
++struct sunxi_idma_des {
++ u32 config;
++ u32 buf_size;
++ u32 buf_addr_ptr1;
++ u32 buf_addr_ptr2;
++};
++
++struct sunxi_mmc_host {
++ struct mmc_host *mmc;
++ struct regulator *vmmc;
++
++ /* IO mapping base */
++ void __iomem *reg_base;
++
++ spinlock_t lock;
++ struct tasklet_struct tasklet;
++
++ /* clock management */
++ struct clk *clk_ahb;
++ struct clk *clk_mod;
++
++ /* ios information */
++ u32 clk_mod_rate;
++ u32 bus_width;
++ u32 idma_des_size_bits;
++ u32 ddr;
++ u32 voltage_switching;
++
++ /* irq */
++ int irq;
++ u32 int_sum;
++ u32 sdio_imask;
++
++ /* flags */
++ u32 power_on:1;
++ u32 wait_dma:1;
++
++ dma_addr_t sg_dma;
++ void *sg_cpu;
++
++ struct mmc_request *mrq;
++ u32 ferror;
++};
++
++#define MMC_CLK_400K 0
++#define MMC_CLK_25M 1
++#define MMC_CLK_50M 2
++#define MMC_CLK_50MDDR 3
++#define MMC_CLK_50MDDR_8BIT 4
++#define MMC_CLK_100M 5
++#define MMC_CLK_200M 6
++#define MMC_CLK_MOD_NUM 7
++
++struct sunxi_mmc_clk_dly {
++ u32 mode;
++ u32 oclk_dly;
++ u32 sclk_dly;
++};
++
++#endif
+--
+2.0.3
+
projects / openwrt / openwrt.git / blobdiff