--- /dev/null
+/* Copyright Statement:
+ *
+ * This software/firmware and related documentation ("MediaTek Software") are
+ * protected under relevant copyright laws. The information contained herein
+ * is confidential and proprietary to MediaTek Inc. and/or its licensors.
+ * Without the prior written permission of MediaTek inc. and/or its licensors,
+ * any reproduction, modification, use or disclosure of MediaTek Software,
+ * and information contained herein, in whole or in part, shall be strictly prohibited.
+ *
+ * MediaTek Inc. (C) 2010. All rights reserved.
+ *
+ * BY OPENING THIS FILE, RECEIVER HEREBY UNEQUIVOCALLY ACKNOWLEDGES AND AGREES
+ * THAT THE SOFTWARE/FIRMWARE AND ITS DOCUMENTATIONS ("MEDIATEK SOFTWARE")
+ * RECEIVED FROM MEDIATEK AND/OR ITS REPRESENTATIVES ARE PROVIDED TO RECEIVER ON
+ * AN "AS-IS" BASIS ONLY. MEDIATEK EXPRESSLY DISCLAIMS ANY AND ALL WARRANTIES,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT.
+ * NEITHER DOES MEDIATEK PROVIDE ANY WARRANTY WHATSOEVER WITH RESPECT TO THE
+ * SOFTWARE OF ANY THIRD PARTY WHICH MAY BE USED BY, INCORPORATED IN, OR
+ * SUPPLIED WITH THE MEDIATEK SOFTWARE, AND RECEIVER AGREES TO LOOK ONLY TO SUCH
+ * THIRD PARTY FOR ANY WARRANTY CLAIM RELATING THERETO. RECEIVER EXPRESSLY ACKNOWLEDGES
+ * THAT IT IS RECEIVER'S SOLE RESPONSIBILITY TO OBTAIN FROM ANY THIRD PARTY ALL PROPER LICENSES
+ * CONTAINED IN MEDIATEK SOFTWARE. MEDIATEK SHALL ALSO NOT BE RESPONSIBLE FOR ANY MEDIATEK
+ * SOFTWARE RELEASES MADE TO RECEIVER'S SPECIFICATION OR TO CONFORM TO A PARTICULAR
+ * STANDARD OR OPEN FORUM. RECEIVER'S SOLE AND EXCLUSIVE REMEDY AND MEDIATEK'S ENTIRE AND
+ * CUMULATIVE LIABILITY WITH RESPECT TO THE MEDIATEK SOFTWARE RELEASED HEREUNDER WILL BE,
+ * AT MEDIATEK'S OPTION, TO REVISE OR REPLACE THE MEDIATEK SOFTWARE AT ISSUE,
+ * OR REFUND ANY SOFTWARE LICENSE FEES OR SERVICE CHARGE PAID BY RECEIVER TO
+ * MEDIATEK FOR SUCH MEDIATEK SOFTWARE AT ISSUE.
+ *
+ * The following software/firmware and/or related documentation ("MediaTek Software")
+ * have been modified by MediaTek Inc. All revisions are subject to any receiver's
+ * applicable license agreements with MediaTek Inc.
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/spinlock.h>
+#include <linux/timer.h>
+#include <linux/ioport.h>
+#include <linux/device.h>
+#include <linux/platform_device.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/blkdev.h>
+#include <linux/slab.h>
+#include <linux/mmc/host.h>
+#include <linux/mmc/card.h>
+#include <linux/mmc/core.h>
+#include <linux/mmc/mmc.h>
+#include <linux/mmc/sd.h>
+#include <linux/mmc/sdio.h>
+#include <linux/dma-mapping.h>
+
+/* +++ by chhung */
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/version.h>
+#include <linux/pm.h>
+#include <linux/of.h>
+
+#define MSDC_SMPL_FALLING (1)
+#define MSDC_CD_PIN_EN (1 << 0) /* card detection pin is wired */
+#define MSDC_WP_PIN_EN (1 << 1) /* write protection pin is wired */
+#define MSDC_REMOVABLE (1 << 5) /* removable slot */
+#define MSDC_SYS_SUSPEND (1 << 6) /* suspended by system */
+#define MSDC_HIGHSPEED (1 << 7)
+
+//#define IRQ_SDC 14 //MT7620 /*FIXME*/
+#ifdef CONFIG_SOC_MT7621
+#define RALINK_SYSCTL_BASE 0xbe000000
+#define RALINK_MSDC_BASE 0xbe130000
+#else
+#define RALINK_SYSCTL_BASE 0xb0000000
+#define RALINK_MSDC_BASE 0xb0130000
+#endif
+#define IRQ_SDC 22 /*FIXME*/
+
+#include <asm/dma.h>
+/* end of +++ */
+
+
+#include <asm/mach-ralink/ralink_regs.h>
+
+#if 0 /* --- by chhung */
+#include <mach/board.h>
+#include <mach/mt6575_devs.h>
+#include <mach/mt6575_typedefs.h>
+#include <mach/mt6575_clock_manager.h>
+#include <mach/mt6575_pm_ldo.h>
+//#include <mach/mt6575_pll.h>
+//#include <mach/mt6575_gpio.h>
+//#include <mach/mt6575_gpt_sw.h>
+#include <asm/tcm.h>
+// #include <mach/mt6575_gpt.h>
+#endif /* end of --- */
+
+#include "mt6575_sd.h"
+#include "dbg.h"
+
+/* +++ by chhung */
+#include "board.h"
+/* end of +++ */
+
+#if 0 /* --- by chhung */
+#define isb() __asm__ __volatile__ ("" : : : "memory")
+#define dsb() __asm__ __volatile__ ("mcr p15, 0, %0, c7, c10, 4" \
+ : : "r" (0) : "memory")
+#define dmb() __asm__ __volatile__ ("" : : : "memory")
+#endif /* end of --- */
+
+#define DRV_NAME "mtk-sd"
+
+#define HOST_MAX_NUM (1) /* +/- by chhung */
+
+#if defined (CONFIG_SOC_MT7620)
+#define HOST_MAX_MCLK (48000000) /* +/- by chhung */
+#elif defined (CONFIG_SOC_MT7621)
+#define HOST_MAX_MCLK (50000000) /* +/- by chhung */
+#endif
+#define HOST_MIN_MCLK (260000)
+
+#define HOST_MAX_BLKSZ (2048)
+
+#define MSDC_OCR_AVAIL (MMC_VDD_28_29 | MMC_VDD_29_30 | MMC_VDD_30_31 | MMC_VDD_31_32 | MMC_VDD_32_33)
+
+#define GPIO_PULL_DOWN (0)
+#define GPIO_PULL_UP (1)
+
+#if 0 /* --- by chhung */
+#define MSDC_CLKSRC_REG (0xf100000C)
+#define PDN_REG (0xF1000010)
+#endif /* end of --- */
+
+#define DEFAULT_DEBOUNCE (8) /* 8 cycles */
+#define DEFAULT_DTOC (40) /* data timeout counter. 65536x40 sclk. */
+
+#define CMD_TIMEOUT (HZ/10) /* 100ms */
+#define DAT_TIMEOUT (HZ/2 * 5) /* 500ms x5 */
+
+#define MAX_DMA_CNT (64 * 1024 - 512) /* a single transaction for WIFI may be 50K*/
+
+#define MAX_GPD_NUM (1 + 1) /* one null gpd */
+#define MAX_BD_NUM (1024)
+#define MAX_BD_PER_GPD (MAX_BD_NUM)
+
+#define MAX_HW_SGMTS (MAX_BD_NUM)
+#define MAX_PHY_SGMTS (MAX_BD_NUM)
+#define MAX_SGMT_SZ (MAX_DMA_CNT)
+#define MAX_REQ_SZ (MAX_SGMT_SZ * 8)
+
+static int mtk_sw_poll;
+
+static int cd_active_low = 1;
+
+//=================================
+#define PERI_MSDC0_PDN (15)
+//#define PERI_MSDC1_PDN (16)
+//#define PERI_MSDC2_PDN (17)
+//#define PERI_MSDC3_PDN (18)
+
+#if 0 /* --- by chhung */
+/* gate means clock power down */
+static int g_clk_gate = 0;
+#define msdc_gate_clock(id) \
+ do { \
+ g_clk_gate &= ~(1 << ((id) + PERI_MSDC0_PDN)); \
+ } while(0)
+/* not like power down register. 1 means clock on. */
+#define msdc_ungate_clock(id) \
+ do { \
+ g_clk_gate |= 1 << ((id) + PERI_MSDC0_PDN); \
+ } while(0)
+
+// do we need sync object or not
+void msdc_clk_status(int * status)
+{
+ *status = g_clk_gate;
+}
+#endif /* end of --- */
+
+/* +++ by chhung */
+struct msdc_hw msdc0_hw = {
+ .clk_src = 0,
+ .cmd_edge = MSDC_SMPL_FALLING,
+ .data_edge = MSDC_SMPL_FALLING,
+ .clk_drv = 4,
+ .cmd_drv = 4,
+ .dat_drv = 4,
+ .data_pins = 4,
+ .data_offset = 0,
+ .flags = MSDC_SYS_SUSPEND | MSDC_CD_PIN_EN | MSDC_REMOVABLE | MSDC_HIGHSPEED,
+// .flags = MSDC_SYS_SUSPEND | MSDC_WP_PIN_EN | MSDC_CD_PIN_EN | MSDC_REMOVABLE,
+};
+
+static struct resource mtk_sd_resources[] = {
+ [0] = {
+ .start = RALINK_MSDC_BASE,
+ .end = RALINK_MSDC_BASE+0x3fff,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = IRQ_SDC, /*FIXME*/
+ .end = IRQ_SDC, /*FIXME*/
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct platform_device mtk_sd_device = {
+ .name = "mtk-sd",
+ .id = 0,
+ .num_resources = ARRAY_SIZE(mtk_sd_resources),
+ .resource = mtk_sd_resources,
+};
+/* end of +++ */
+
+static int msdc_rsp[] = {
+ 0, /* RESP_NONE */
+ 1, /* RESP_R1 */
+ 2, /* RESP_R2 */
+ 3, /* RESP_R3 */
+ 4, /* RESP_R4 */
+ 1, /* RESP_R5 */
+ 1, /* RESP_R6 */
+ 1, /* RESP_R7 */
+ 7, /* RESP_R1b */
+};
+
+/* For Inhanced DMA */
+#define msdc_init_gpd_ex(gpd,extlen,cmd,arg,blknum) \
+ do { \
+ ((gpd_t*)gpd)->extlen = extlen; \
+ ((gpd_t*)gpd)->cmd = cmd; \
+ ((gpd_t*)gpd)->arg = arg; \
+ ((gpd_t*)gpd)->blknum = blknum; \
+ }while(0)
+
+#define msdc_init_bd(bd, blkpad, dwpad, dptr, dlen) \
+ do { \
+ BUG_ON(dlen > 0xFFFFUL); \
+ ((bd_t*)bd)->blkpad = blkpad; \
+ ((bd_t*)bd)->dwpad = dwpad; \
+ ((bd_t*)bd)->ptr = (void*)dptr; \
+ ((bd_t*)bd)->buflen = dlen; \
+ }while(0)
+
+#define msdc_txfifocnt() ((sdr_read32(MSDC_FIFOCS) & MSDC_FIFOCS_TXCNT) >> 16)
+#define msdc_rxfifocnt() ((sdr_read32(MSDC_FIFOCS) & MSDC_FIFOCS_RXCNT) >> 0)
+#define msdc_fifo_write32(v) sdr_write32(MSDC_TXDATA, (v))
+#define msdc_fifo_write8(v) sdr_write8(MSDC_TXDATA, (v))
+#define msdc_fifo_read32() sdr_read32(MSDC_RXDATA)
+#define msdc_fifo_read8() sdr_read8(MSDC_RXDATA)
+
+
+#define msdc_dma_on() sdr_clr_bits(MSDC_CFG, MSDC_CFG_PIO)
+#define msdc_dma_off() sdr_set_bits(MSDC_CFG, MSDC_CFG_PIO)
+
+#define msdc_retry(expr,retry,cnt) \
+ do { \
+ int backup = cnt; \
+ while (retry) { \
+ if (!(expr)) break; \
+ if (cnt-- == 0) { \
+ retry--; mdelay(1); cnt = backup; \
+ } \
+ } \
+ WARN_ON(retry == 0); \
+ } while(0)
+
+#if 0 /* --- by chhung */
+#define msdc_reset() \
+ do { \
+ int retry = 3, cnt = 1000; \
+ sdr_set_bits(MSDC_CFG, MSDC_CFG_RST); \
+ dsb(); \
+ msdc_retry(sdr_read32(MSDC_CFG) & MSDC_CFG_RST, retry, cnt); \
+ } while(0)
+#else
+#define msdc_reset() \
+ do { \
+ int retry = 3, cnt = 1000; \
+ sdr_set_bits(MSDC_CFG, MSDC_CFG_RST); \
+ msdc_retry(sdr_read32(MSDC_CFG) & MSDC_CFG_RST, retry, cnt); \
+ } while(0)
+#endif /* end of +/- */
+
+#define msdc_clr_int() \
+ do { \
+ volatile u32 val = sdr_read32(MSDC_INT); \
+ sdr_write32(MSDC_INT, val); \
+ } while(0)
+
+#define msdc_clr_fifo() \
+ do { \
+ int retry = 3, cnt = 1000; \
+ sdr_set_bits(MSDC_FIFOCS, MSDC_FIFOCS_CLR); \
+ msdc_retry(sdr_read32(MSDC_FIFOCS) & MSDC_FIFOCS_CLR, retry, cnt); \
+ } while(0)
+
+#define msdc_irq_save(val) \
+ do { \
+ val = sdr_read32(MSDC_INTEN); \
+ sdr_clr_bits(MSDC_INTEN, val); \
+ } while(0)
+
+#define msdc_irq_restore(val) \
+ do { \
+ sdr_set_bits(MSDC_INTEN, val); \
+ } while(0)
+
+/* clock source for host: global */
+#if defined (CONFIG_SOC_MT7620)
+static u32 hclks[] = {48000000}; /* +/- by chhung */
+#elif defined (CONFIG_SOC_MT7621)
+static u32 hclks[] = {50000000}; /* +/- by chhung */
+#endif
+
+//============================================
+// the power for msdc host controller: global
+// always keep the VMC on.
+//============================================
+#define msdc_vcore_on(host) \
+ do { \
+ INIT_MSG("[+]VMC ref. count<%d>", ++host->pwr_ref); \
+ (void)hwPowerOn(MT65XX_POWER_LDO_VMC, VOL_3300, "SD"); \
+ } while (0)
+#define msdc_vcore_off(host) \
+ do { \
+ INIT_MSG("[-]VMC ref. count<%d>", --host->pwr_ref); \
+ (void)hwPowerDown(MT65XX_POWER_LDO_VMC, "SD"); \
+ } while (0)
+
+//====================================
+// the vdd output for card: global
+// always keep the VMCH on.
+//====================================
+#define msdc_vdd_on(host) \
+ do { \
+ (void)hwPowerOn(MT65XX_POWER_LDO_VMCH, VOL_3300, "SD"); \
+ } while (0)
+#define msdc_vdd_off(host) \
+ do { \
+ (void)hwPowerDown(MT65XX_POWER_LDO_VMCH, "SD"); \
+ } while (0)
+
+#define sdc_is_busy() (sdr_read32(SDC_STS) & SDC_STS_SDCBUSY)
+#define sdc_is_cmd_busy() (sdr_read32(SDC_STS) & SDC_STS_CMDBUSY)
+
+#define sdc_send_cmd(cmd,arg) \
+ do { \
+ sdr_write32(SDC_ARG, (arg)); \
+ sdr_write32(SDC_CMD, (cmd)); \
+ } while(0)
+
+// can modify to read h/w register.
+//#define is_card_present(h) ((sdr_read32(MSDC_PS) & MSDC_PS_CDSTS) ? 0 : 1);
+#define is_card_present(h) (((struct msdc_host*)(h))->card_inserted)
+
+/* +++ by chhung */
+#ifndef __ASSEMBLY__
+#define PHYSADDR(a) (((unsigned long)(a)) & 0x1fffffff)
+#else
+#define PHYSADDR(a) ((a) & 0x1fffffff)
+#endif
+/* end of +++ */
+static unsigned int msdc_do_command(struct msdc_host *host,
+ struct mmc_command *cmd,
+ int tune,
+ unsigned long timeout);
+
+static int msdc_tune_cmdrsp(struct msdc_host*host,struct mmc_command *cmd);
+
+#ifdef MT6575_SD_DEBUG
+static void msdc_dump_card_status(struct msdc_host *host, u32 status)
+{
+ static char *state[] = {
+ "Idle", /* 0 */
+ "Ready", /* 1 */
+ "Ident", /* 2 */
+ "Stby", /* 3 */
+ "Tran", /* 4 */
+ "Data", /* 5 */
+ "Rcv", /* 6 */
+ "Prg", /* 7 */
+ "Dis", /* 8 */
+ "Reserved", /* 9 */
+ "Reserved", /* 10 */
+ "Reserved", /* 11 */
+ "Reserved", /* 12 */
+ "Reserved", /* 13 */
+ "Reserved", /* 14 */
+ "I/O mode", /* 15 */
+ };
+ if (status & R1_OUT_OF_RANGE)
+ N_MSG(RSP, "[CARD_STATUS] Out of Range");
+ if (status & R1_ADDRESS_ERROR)
+ N_MSG(RSP, "[CARD_STATUS] Address Error");
+ if (status & R1_BLOCK_LEN_ERROR)
+ N_MSG(RSP, "[CARD_STATUS] Block Len Error");
+ if (status & R1_ERASE_SEQ_ERROR)
+ N_MSG(RSP, "[CARD_STATUS] Erase Seq Error");
+ if (status & R1_ERASE_PARAM)
+ N_MSG(RSP, "[CARD_STATUS] Erase Param");
+ if (status & R1_WP_VIOLATION)
+ N_MSG(RSP, "[CARD_STATUS] WP Violation");
+ if (status & R1_CARD_IS_LOCKED)
+ N_MSG(RSP, "[CARD_STATUS] Card is Locked");
+ if (status & R1_LOCK_UNLOCK_FAILED)
+ N_MSG(RSP, "[CARD_STATUS] Lock/Unlock Failed");
+ if (status & R1_COM_CRC_ERROR)
+ N_MSG(RSP, "[CARD_STATUS] Command CRC Error");
+ if (status & R1_ILLEGAL_COMMAND)
+ N_MSG(RSP, "[CARD_STATUS] Illegal Command");
+ if (status & R1_CARD_ECC_FAILED)
+ N_MSG(RSP, "[CARD_STATUS] Card ECC Failed");
+ if (status & R1_CC_ERROR)
+ N_MSG(RSP, "[CARD_STATUS] CC Error");
+ if (status & R1_ERROR)
+ N_MSG(RSP, "[CARD_STATUS] Error");
+ if (status & R1_UNDERRUN)
+ N_MSG(RSP, "[CARD_STATUS] Underrun");
+ if (status & R1_OVERRUN)
+ N_MSG(RSP, "[CARD_STATUS] Overrun");
+ if (status & R1_CID_CSD_OVERWRITE)
+ N_MSG(RSP, "[CARD_STATUS] CID/CSD Overwrite");
+ if (status & R1_WP_ERASE_SKIP)
+ N_MSG(RSP, "[CARD_STATUS] WP Eraser Skip");
+ if (status & R1_CARD_ECC_DISABLED)
+ N_MSG(RSP, "[CARD_STATUS] Card ECC Disabled");
+ if (status & R1_ERASE_RESET)
+ N_MSG(RSP, "[CARD_STATUS] Erase Reset");
+ if (status & R1_READY_FOR_DATA)
+ N_MSG(RSP, "[CARD_STATUS] Ready for Data");
+ if (status & R1_SWITCH_ERROR)
+ N_MSG(RSP, "[CARD_STATUS] Switch error");
+ if (status & R1_APP_CMD)
+ N_MSG(RSP, "[CARD_STATUS] App Command");
+
+ N_MSG(RSP, "[CARD_STATUS] '%s' State", state[R1_CURRENT_STATE(status)]);
+}
+
+static void msdc_dump_ocr_reg(struct msdc_host *host, u32 resp)
+{
+ if (resp & (1 << 7))
+ N_MSG(RSP, "[OCR] Low Voltage Range");
+ if (resp & (1 << 15))
+ N_MSG(RSP, "[OCR] 2.7-2.8 volt");
+ if (resp & (1 << 16))
+ N_MSG(RSP, "[OCR] 2.8-2.9 volt");
+ if (resp & (1 << 17))
+ N_MSG(RSP, "[OCR] 2.9-3.0 volt");
+ if (resp & (1 << 18))
+ N_MSG(RSP, "[OCR] 3.0-3.1 volt");
+ if (resp & (1 << 19))
+ N_MSG(RSP, "[OCR] 3.1-3.2 volt");
+ if (resp & (1 << 20))
+ N_MSG(RSP, "[OCR] 3.2-3.3 volt");
+ if (resp & (1 << 21))
+ N_MSG(RSP, "[OCR] 3.3-3.4 volt");
+ if (resp & (1 << 22))
+ N_MSG(RSP, "[OCR] 3.4-3.5 volt");
+ if (resp & (1 << 23))
+ N_MSG(RSP, "[OCR] 3.5-3.6 volt");
+ if (resp & (1 << 24))
+ N_MSG(RSP, "[OCR] Switching to 1.8V Accepted (S18A)");
+ if (resp & (1 << 30))
+ N_MSG(RSP, "[OCR] Card Capacity Status (CCS)");
+ if (resp & (1 << 31))
+ N_MSG(RSP, "[OCR] Card Power Up Status (Idle)");
+ else
+ N_MSG(RSP, "[OCR] Card Power Up Status (Busy)");
+}
+
+static void msdc_dump_rca_resp(struct msdc_host *host, u32 resp)
+{
+ u32 status = (((resp >> 15) & 0x1) << 23) |
+ (((resp >> 14) & 0x1) << 22) |
+ (((resp >> 13) & 0x1) << 19) |
+ (resp & 0x1fff);
+
+ N_MSG(RSP, "[RCA] 0x%.4x", resp >> 16);
+ msdc_dump_card_status(host, status);
+}
+
+static void msdc_dump_io_resp(struct msdc_host *host, u32 resp)
+{
+ u32 flags = (resp >> 8) & 0xFF;
+ char *state[] = {"DIS", "CMD", "TRN", "RFU"};
+
+ if (flags & (1 << 7))
+ N_MSG(RSP, "[IO] COM_CRC_ERR");
+ if (flags & (1 << 6))
+ N_MSG(RSP, "[IO] Illgal command");
+ if (flags & (1 << 3))
+ N_MSG(RSP, "[IO] Error");
+ if (flags & (1 << 2))
+ N_MSG(RSP, "[IO] RFU");
+ if (flags & (1 << 1))
+ N_MSG(RSP, "[IO] Function number error");
+ if (flags & (1 << 0))
+ N_MSG(RSP, "[IO] Out of range");
+
+ N_MSG(RSP, "[IO] State: %s, Data:0x%x", state[(resp >> 12) & 0x3], resp & 0xFF);
+}
+#endif
+
+static void msdc_set_timeout(struct msdc_host *host, u32 ns, u32 clks)
+{
+ u32 base = host->base;
+ u32 timeout, clk_ns;
+
+ host->timeout_ns = ns;
+ host->timeout_clks = clks;
+
+ clk_ns = 1000000000UL / host->sclk;
+ timeout = ns / clk_ns + clks;
+ timeout = timeout >> 16; /* in 65536 sclk cycle unit */
+ timeout = timeout > 1 ? timeout - 1 : 0;
+ timeout = timeout > 255 ? 255 : timeout;
+
+ sdr_set_field(SDC_CFG, SDC_CFG_DTOC, timeout);
+
+ N_MSG(OPS, "Set read data timeout: %dns %dclks -> %d x 65536 cycles",
+ ns, clks, timeout + 1);
+}
+
+/* msdc_eirq_sdio() will be called when EIRQ(for WIFI) */
+static void msdc_eirq_sdio(void *data)
+{
+ struct msdc_host *host = (struct msdc_host *)data;
+
+ N_MSG(INT, "SDIO EINT");
+
+ mmc_signal_sdio_irq(host->mmc);
+}
+
+/* msdc_eirq_cd will not be used! We not using EINT for card detection. */
+static void msdc_eirq_cd(void *data)
+{
+ struct msdc_host *host = (struct msdc_host *)data;
+
+ N_MSG(INT, "CD EINT");
+
+#if 0
+ tasklet_hi_schedule(&host->card_tasklet);
+#else
+ schedule_delayed_work(&host->card_delaywork, HZ);
+#endif
+}
+
+#if 0
+static void msdc_tasklet_card(unsigned long arg)
+{
+ struct msdc_host *host = (struct msdc_host *)arg;
+#else
+static void msdc_tasklet_card(struct work_struct *work)
+{
+ struct msdc_host *host = (struct msdc_host *)container_of(work,
+ struct msdc_host, card_delaywork.work);
+#endif
+ struct msdc_hw *hw = host->hw;
+ u32 base = host->base;
+ u32 inserted;
+ u32 status = 0;
+ //u32 change = 0;
+
+ spin_lock(&host->lock);
+
+ if (hw->get_cd_status) { // NULL
+ inserted = hw->get_cd_status();
+ } else {
+ status = sdr_read32(MSDC_PS);
+ if (cd_active_low)
+ inserted = (status & MSDC_PS_CDSTS) ? 0 : 1;
+ else
+ inserted = (status & MSDC_PS_CDSTS) ? 1 : 0;
+ }
+ if (host->mmc->caps & MMC_CAP_NEEDS_POLL)
+ inserted = 1;
+
+#if 0
+ change = host->card_inserted ^ inserted;
+ host->card_inserted = inserted;
+
+ if (change && !host->suspend) {
+ if (inserted) {
+ host->mmc->f_max = HOST_MAX_MCLK; // work around
+ }
+ mmc_detect_change(host->mmc, msecs_to_jiffies(20));
+ }
+#else /* Make sure: handle the last interrupt */
+ host->card_inserted = inserted;
+
+ if (!host->suspend) {
+ host->mmc->f_max = HOST_MAX_MCLK;
+ mmc_detect_change(host->mmc, msecs_to_jiffies(20));
+ }
+
+ IRQ_MSG("card found<%s>", inserted ? "inserted" : "removed");
+#endif
+
+ spin_unlock(&host->lock);
+}
+
+#if 0 /* --- by chhung */
+/* For E2 only */
+static u8 clk_src_bit[4] = {
+ 0, 3, 5, 7
+};
+
+static void msdc_select_clksrc(struct msdc_host* host, unsigned char clksrc)
+{
+ u32 val;
+ u32 base = host->base;
+
+ BUG_ON(clksrc > 3);
+ INIT_MSG("set clock source to <%d>", clksrc);
+
+ val = sdr_read32(MSDC_CLKSRC_REG);
+ if (sdr_read32(MSDC_ECO_VER) >= 4) {
+ val &= ~(0x3 << clk_src_bit[host->id]);
+ val |= clksrc << clk_src_bit[host->id];
+ } else {
+ val &= ~0x3; val |= clksrc;
+ }
+ sdr_write32(MSDC_CLKSRC_REG, val);
+
+ host->hclk = hclks[clksrc];
+ host->hw->clk_src = clksrc;
+}
+#endif /* end of --- */
+
+static void msdc_set_mclk(struct msdc_host *host, int ddr, unsigned int hz)
+{
+ //struct msdc_hw *hw = host->hw;
+ u32 base = host->base;
+ u32 mode;
+ u32 flags;
+ u32 div;
+ u32 sclk;
+ u32 hclk = host->hclk;
+ //u8 clksrc = hw->clk_src;
+
+ if (!hz) { // set mmc system clock to 0 ?
+ //ERR_MSG("set mclk to 0!!!");
+ msdc_reset();
+ return;
+ }
+
+ msdc_irq_save(flags);
+
+#if defined (CONFIG_MT7621_FPGA) || defined (CONFIG_MT7628_FPGA)
+ mode = 0x0; /* use divisor */
+ if (hz >= (hclk >> 1)) {
+ div = 0; /* mean div = 1/2 */
+ sclk = hclk >> 1; /* sclk = clk / 2 */
+ } else {
+ div = (hclk + ((hz << 2) - 1)) / (hz << 2);
+ sclk = (hclk >> 2) / div;
+ }
+#else
+ if (ddr) {
+ mode = 0x2; /* ddr mode and use divisor */
+ if (hz >= (hclk >> 2)) {
+ div = 1; /* mean div = 1/4 */
+ sclk = hclk >> 2; /* sclk = clk / 4 */
+ } else {
+ div = (hclk + ((hz << 2) - 1)) / (hz << 2);
+ sclk = (hclk >> 2) / div;
+ }
+ } else if (hz >= hclk) { /* bug fix */
+ mode = 0x1; /* no divisor and divisor is ignored */
+ div = 0;
+ sclk = hclk;
+ } else {
+ mode = 0x0; /* use divisor */
+ if (hz >= (hclk >> 1)) {
+ div = 0; /* mean div = 1/2 */
+ sclk = hclk >> 1; /* sclk = clk / 2 */
+ } else {
+ div = (hclk + ((hz << 2) - 1)) / (hz << 2);
+ sclk = (hclk >> 2) / div;
+ }
+ }
+#endif
+ /* set clock mode and divisor */
+ sdr_set_field(MSDC_CFG, MSDC_CFG_CKMOD, mode);
+ sdr_set_field(MSDC_CFG, MSDC_CFG_CKDIV, div);
+
+ /* wait clock stable */
+ while (!(sdr_read32(MSDC_CFG) & MSDC_CFG_CKSTB));
+
+ host->sclk = sclk;
+ host->mclk = hz;
+ msdc_set_timeout(host, host->timeout_ns, host->timeout_clks); // need?
+
+ INIT_MSG("================");
+ INIT_MSG("!!! Set<%dKHz> Source<%dKHz> -> sclk<%dKHz>", hz/1000, hclk/1000, sclk/1000);
+ INIT_MSG("================");
+
+ msdc_irq_restore(flags);
+}
+
+/* Fix me. when need to abort */
+static void msdc_abort_data(struct msdc_host *host)
+{
+ u32 base = host->base;
+ struct mmc_command *stop = host->mrq->stop;
+
+ ERR_MSG("Need to Abort. dma<%d>", host->dma_xfer);
+
+ msdc_reset();
+ msdc_clr_fifo();
+ msdc_clr_int();
+
+ // need to check FIFO count 0 ?
+
+ if (stop) { /* try to stop, but may not success */
+ ERR_MSG("stop when abort CMD<%d>", stop->opcode);
+ (void)msdc_do_command(host, stop, 0, CMD_TIMEOUT);
+ }
+
+ //if (host->mclk >= 25000000) {
+ // msdc_set_mclk(host, 0, host->mclk >> 1);
+ //}
+}
+
+#if 0 /* --- by chhung */
+static void msdc_pin_config(struct msdc_host *host, int mode)
+{
+ struct msdc_hw *hw = host->hw;
+ u32 base = host->base;
+ int pull = (mode == MSDC_PIN_PULL_UP) ? GPIO_PULL_UP : GPIO_PULL_DOWN;
+
+ /* Config WP pin */
+ if (hw->flags & MSDC_WP_PIN_EN) {
+ if (hw->config_gpio_pin) /* NULL */
+ hw->config_gpio_pin(MSDC_WP_PIN, pull);
+ }
+
+ switch (mode) {
+ case MSDC_PIN_PULL_UP:
+ //sdr_set_field(MSDC_PAD_CTL0, MSDC_PAD_CTL0_CLKPU, 1); /* Check & FIXME */
+ //sdr_set_field(MSDC_PAD_CTL0, MSDC_PAD_CTL0_CLKPD, 0); /* Check & FIXME */
+ sdr_set_field(MSDC_PAD_CTL1, MSDC_PAD_CTL1_CMDPU, 1);
+ sdr_set_field(MSDC_PAD_CTL1, MSDC_PAD_CTL1_CMDPD, 0);
+ sdr_set_field(MSDC_PAD_CTL2, MSDC_PAD_CTL2_DATPU, 1);
+ sdr_set_field(MSDC_PAD_CTL2, MSDC_PAD_CTL2_DATPD, 0);
+ break;
+ case MSDC_PIN_PULL_DOWN:
+ //sdr_set_field(MSDC_PAD_CTL0, MSDC_PAD_CTL0_CLKPU, 0); /* Check & FIXME */
+ //sdr_set_field(MSDC_PAD_CTL0, MSDC_PAD_CTL0_CLKPD, 1); /* Check & FIXME */
+ sdr_set_field(MSDC_PAD_CTL1, MSDC_PAD_CTL1_CMDPU, 0);
+ sdr_set_field(MSDC_PAD_CTL1, MSDC_PAD_CTL1_CMDPD, 1);
+ sdr_set_field(MSDC_PAD_CTL2, MSDC_PAD_CTL2_DATPU, 0);
+ sdr_set_field(MSDC_PAD_CTL2, MSDC_PAD_CTL2_DATPD, 1);
+ break;
+ case MSDC_PIN_PULL_NONE:
+ default:
+ //sdr_set_field(MSDC_PAD_CTL0, MSDC_PAD_CTL0_CLKPU, 0); /* Check & FIXME */
+ //sdr_set_field(MSDC_PAD_CTL0, MSDC_PAD_CTL0_CLKPD, 0); /* Check & FIXME */
+ sdr_set_field(MSDC_PAD_CTL1, MSDC_PAD_CTL1_CMDPU, 0);
+ sdr_set_field(MSDC_PAD_CTL1, MSDC_PAD_CTL1_CMDPD, 0);
+ sdr_set_field(MSDC_PAD_CTL2, MSDC_PAD_CTL2_DATPU, 0);
+ sdr_set_field(MSDC_PAD_CTL2, MSDC_PAD_CTL2_DATPD, 0);
+ break;
+ }
+
+ N_MSG(CFG, "Pins mode(%d), down(%d), up(%d)",
+ mode, MSDC_PIN_PULL_DOWN, MSDC_PIN_PULL_UP);
+}
+
+void msdc_pin_reset(struct msdc_host *host, int mode)
+{
+ struct msdc_hw *hw = (struct msdc_hw *)host->hw;
+ u32 base = host->base;
+ int pull = (mode == MSDC_PIN_PULL_UP) ? GPIO_PULL_UP : GPIO_PULL_DOWN;
+
+ /* Config reset pin */
+ if (hw->flags & MSDC_RST_PIN_EN) {
+ if (hw->config_gpio_pin) /* NULL */
+ hw->config_gpio_pin(MSDC_RST_PIN, pull);
+
+ if (mode == MSDC_PIN_PULL_UP) {
+ sdr_clr_bits(EMMC_IOCON, EMMC_IOCON_BOOTRST);
+ } else {
+ sdr_set_bits(EMMC_IOCON, EMMC_IOCON_BOOTRST);
+ }
+ }
+}
+
+static void msdc_core_power(struct msdc_host *host, int on)
+{
+ N_MSG(CFG, "Turn %s %s power (copower: %d -> %d)",
+ on ? "on" : "off", "core", host->core_power, on);
+
+ if (on && host->core_power == 0) {
+ msdc_vcore_on(host);
+ host->core_power = 1;
+ msleep(1);
+ } else if (!on && host->core_power == 1) {
+ msdc_vcore_off(host);
+ host->core_power = 0;
+ msleep(1);
+ }
+}
+
+static void msdc_host_power(struct msdc_host *host, int on)
+{
+ N_MSG(CFG, "Turn %s %s power ", on ? "on" : "off", "host");
+
+ if (on) {
+ //msdc_core_power(host, 1); // need do card detection.
+ msdc_pin_reset(host, MSDC_PIN_PULL_UP);
+ } else {
+ msdc_pin_reset(host, MSDC_PIN_PULL_DOWN);
+ //msdc_core_power(host, 0);
+ }
+}
+
+static void msdc_card_power(struct msdc_host *host, int on)
+{
+ N_MSG(CFG, "Turn %s %s power ", on ? "on" : "off", "card");
+
+ if (on) {
+ msdc_pin_config(host, MSDC_PIN_PULL_UP);
+ if (host->hw->ext_power_on) {
+ host->hw->ext_power_on();
+ } else {
+ //msdc_vdd_on(host); // need todo card detection.
+ }
+ msleep(1);
+ } else {
+ if (host->hw->ext_power_off) {
+ host->hw->ext_power_off();
+ } else {
+ //msdc_vdd_off(host);
+ }
+ msdc_pin_config(host, MSDC_PIN_PULL_DOWN);
+ msleep(1);
+ }
+}
+
+static void msdc_set_power_mode(struct msdc_host *host, u8 mode)
+{
+ N_MSG(CFG, "Set power mode(%d)", mode);
+
+ if (host->power_mode == MMC_POWER_OFF && mode != MMC_POWER_OFF) {
+ msdc_host_power(host, 1);
+ msdc_card_power(host, 1);
+ } else if (host->power_mode != MMC_POWER_OFF && mode == MMC_POWER_OFF) {
+ msdc_card_power(host, 0);
+ msdc_host_power(host, 0);
+ }
+ host->power_mode = mode;
+}
+#endif /* end of --- */
+
+#ifdef CONFIG_PM
+/*
+ register as callback function of WIFI(combo_sdio_register_pm) .
+ can called by msdc_drv_suspend/resume too.
+*/
+static void msdc_pm(pm_message_t state, void *data)
+{
+ struct msdc_host *host = (struct msdc_host *)data;
+ int evt = state.event;
+
+ if (evt == PM_EVENT_USER_RESUME || evt == PM_EVENT_USER_SUSPEND) {
+ INIT_MSG("USR_%s: suspend<%d> power<%d>",
+ evt == PM_EVENT_USER_RESUME ? "EVENT_USER_RESUME" : "EVENT_USER_SUSPEND",
+ host->suspend, host->power_mode);
+ }
+
+ if (evt == PM_EVENT_SUSPEND || evt == PM_EVENT_USER_SUSPEND) {
+ if (host->suspend) /* already suspend */ /* default 0*/
+ return;
+
+ /* for memory card. already power off by mmc */
+ if (evt == PM_EVENT_SUSPEND && host->power_mode == MMC_POWER_OFF)
+ return;
+
+ host->suspend = 1;
+ host->pm_state = state; /* default PMSG_RESUME */
+
+ INIT_MSG("%s Suspend", evt == PM_EVENT_SUSPEND ? "PM" : "USR");
+ if(host->hw->flags & MSDC_SYS_SUSPEND) /* set for card */
+ (void)mmc_suspend_host(host->mmc);
+ else {
+ // host->mmc->pm_flags |= MMC_PM_IGNORE_PM_NOTIFY; /* just for double confirm */ /* --- by chhung */
+ mmc_remove_host(host->mmc);
+ }
+ } else if (evt == PM_EVENT_RESUME || evt == PM_EVENT_USER_RESUME) {
+ if (!host->suspend){
+ //ERR_MSG("warning: already resume");
+ return;
+ }
+
+ /* No PM resume when USR suspend */
+ if (evt == PM_EVENT_RESUME && host->pm_state.event == PM_EVENT_USER_SUSPEND) {
+ ERR_MSG("PM Resume when in USR Suspend"); /* won't happen. */
+ return;
+ }
+
+ host->suspend = 0;
+ host->pm_state = state;
+
+ INIT_MSG("%s Resume", evt == PM_EVENT_RESUME ? "PM" : "USR");
+ if(host->hw->flags & MSDC_SYS_SUSPEND) { /* will not set for WIFI */
+ (void)mmc_resume_host(host->mmc);
+ }
+ else {
+ // host->mmc->pm_flags |= MMC_PM_IGNORE_PM_NOTIFY; /* --- by chhung */
+ mmc_add_host(host->mmc);
+ }
+ }
+}
+#endif
+
+/*--------------------------------------------------------------------------*/
+/* mmc_host_ops members */
+/*--------------------------------------------------------------------------*/
+static unsigned int msdc_command_start(struct msdc_host *host,
+ struct mmc_command *cmd,
+ int tune, /* not used */
+ unsigned long timeout)
+{
+ u32 base = host->base;
+ u32 opcode = cmd->opcode;
+ u32 rawcmd;
+ u32 wints = MSDC_INT_CMDRDY | MSDC_INT_RSPCRCERR | MSDC_INT_CMDTMO |
+ MSDC_INT_ACMDRDY | MSDC_INT_ACMDCRCERR | MSDC_INT_ACMDTMO |
+ MSDC_INT_ACMD19_DONE;
+
+ u32 resp;
+ unsigned long tmo;
+
+ /* Protocol layer does not provide response type, but our hardware needs
+ * to know exact type, not just size!
+ */
+ if (opcode == MMC_SEND_OP_COND || opcode == SD_APP_OP_COND)
+ resp = RESP_R3;
+ else if (opcode == MMC_SET_RELATIVE_ADDR || opcode == SD_SEND_RELATIVE_ADDR)
+ resp = (mmc_cmd_type(cmd) == MMC_CMD_BCR) ? RESP_R6 : RESP_R1;
+ else if (opcode == MMC_FAST_IO)
+ resp = RESP_R4;
+ else if (opcode == MMC_GO_IRQ_STATE)
+ resp = RESP_R5;
+ else if (opcode == MMC_SELECT_CARD)
+ resp = (cmd->arg != 0) ? RESP_R1B : RESP_NONE;
+ else if (opcode == SD_IO_RW_DIRECT || opcode == SD_IO_RW_EXTENDED)
+ resp = RESP_R1; /* SDIO workaround. */
+ else if (opcode == SD_SEND_IF_COND && (mmc_cmd_type(cmd) == MMC_CMD_BCR))
+ resp = RESP_R1;
+ else {
+ switch (mmc_resp_type(cmd)) {
+ case MMC_RSP_R1:
+ resp = RESP_R1;
+ break;
+ case MMC_RSP_R1B:
+ resp = RESP_R1B;
+ break;
+ case MMC_RSP_R2:
+ resp = RESP_R2;
+ break;
+ case MMC_RSP_R3:
+ resp = RESP_R3;
+ break;
+ case MMC_RSP_NONE:
+ default:
+ resp = RESP_NONE;
+ break;
+ }
+ }
+
+ cmd->error = 0;
+ /* rawcmd :
+ * vol_swt << 30 | auto_cmd << 28 | blklen << 16 | go_irq << 15 |
+ * stop << 14 | rw << 13 | dtype << 11 | rsptyp << 7 | brk << 6 | opcode
+ */
+ rawcmd = opcode | msdc_rsp[resp] << 7 | host->blksz << 16;
+
+ if (opcode == MMC_READ_MULTIPLE_BLOCK) {
+ rawcmd |= (2 << 11);
+ } else if (opcode == MMC_READ_SINGLE_BLOCK) {
+ rawcmd |= (1 << 11);
+ } else if (opcode == MMC_WRITE_MULTIPLE_BLOCK) {
+ rawcmd |= ((2 << 11) | (1 << 13));
+ } else if (opcode == MMC_WRITE_BLOCK) {
+ rawcmd |= ((1 << 11) | (1 << 13));
+ } else if (opcode == SD_IO_RW_EXTENDED) {
+ if (cmd->data->flags & MMC_DATA_WRITE)
+ rawcmd |= (1 << 13);
+ if (cmd->data->blocks > 1)
+ rawcmd |= (2 << 11);
+ else
+ rawcmd |= (1 << 11);
+ } else if (opcode == SD_IO_RW_DIRECT && cmd->flags == (unsigned int)-1) {
+ rawcmd |= (1 << 14);
+ } else if ((opcode == SD_APP_SEND_SCR) ||
+ (opcode == SD_APP_SEND_NUM_WR_BLKS) ||
+ (opcode == SD_SWITCH && (mmc_cmd_type(cmd) == MMC_CMD_ADTC)) ||
+ (opcode == SD_APP_SD_STATUS && (mmc_cmd_type(cmd) == MMC_CMD_ADTC)) ||
+ (opcode == MMC_SEND_EXT_CSD && (mmc_cmd_type(cmd) == MMC_CMD_ADTC))) {
+ rawcmd |= (1 << 11);
+ } else if (opcode == MMC_STOP_TRANSMISSION) {
+ rawcmd |= (1 << 14);
+ rawcmd &= ~(0x0FFF << 16);
+ }
+
+ N_MSG(CMD, "CMD<%d><0x%.8x> Arg<0x%.8x>", opcode , rawcmd, cmd->arg);
+
+ tmo = jiffies + timeout;
+
+ if (opcode == MMC_SEND_STATUS) {
+ for (;;) {
+ if (!sdc_is_cmd_busy())
+ break;
+
+ if (time_after(jiffies, tmo)) {
+ ERR_MSG("XXX cmd_busy timeout: before CMD<%d>", opcode);
+ cmd->error = (unsigned int)-ETIMEDOUT;
+ msdc_reset();
+ goto end;
+ }
+ }
+ }else {
+ for (;;) {
+ if (!sdc_is_busy())
+ break;
+ if (time_after(jiffies, tmo)) {
+ ERR_MSG("XXX sdc_busy timeout: before CMD<%d>", opcode);
+ cmd->error = (unsigned int)-ETIMEDOUT;
+ msdc_reset();
+ goto end;
+ }
+ }
+ }
+
+ //BUG_ON(in_interrupt());
+ host->cmd = cmd;
+ host->cmd_rsp = resp;
+
+ init_completion(&host->cmd_done);
+
+ sdr_set_bits(MSDC_INTEN, wints);
+ sdc_send_cmd(rawcmd, cmd->arg);
+
+end:
+ return cmd->error;
+}
+
+static unsigned int msdc_command_resp(struct msdc_host *host,
+ struct mmc_command *cmd,
+ int tune,
+ unsigned long timeout)
+{
+ u32 base = host->base;
+ u32 opcode = cmd->opcode;
+ //u32 rawcmd;
+ u32 resp;
+ u32 wints = MSDC_INT_CMDRDY | MSDC_INT_RSPCRCERR | MSDC_INT_CMDTMO |
+ MSDC_INT_ACMDRDY | MSDC_INT_ACMDCRCERR | MSDC_INT_ACMDTMO |
+ MSDC_INT_ACMD19_DONE;
+
+ resp = host->cmd_rsp;
+
+ BUG_ON(in_interrupt());
+ //init_completion(&host->cmd_done);
+ //sdr_set_bits(MSDC_INTEN, wints);
+
+ spin_unlock(&host->lock);
+ if(!wait_for_completion_timeout(&host->cmd_done, 10*timeout)){
+ ERR_MSG("XXX CMD<%d> wait_for_completion timeout ARG<0x%.8x>", opcode, cmd->arg);
+ cmd->error = (unsigned int)-ETIMEDOUT;
+ msdc_reset();
+ }
+ spin_lock(&host->lock);
+
+ sdr_clr_bits(MSDC_INTEN, wints);
+ host->cmd = NULL;
+
+//end:
+#ifdef MT6575_SD_DEBUG
+ switch (resp) {
+ case RESP_NONE:
+ N_MSG(RSP, "CMD_RSP(%d): %d RSP(%d)", opcode, cmd->error, resp);
+ break;
+ case RESP_R2:
+ N_MSG(RSP, "CMD_RSP(%d): %d RSP(%d)= %.8x %.8x %.8x %.8x",
+ opcode, cmd->error, resp, cmd->resp[0], cmd->resp[1],
+ cmd->resp[2], cmd->resp[3]);
+ break;
+ default: /* Response types 1, 3, 4, 5, 6, 7(1b) */
+ N_MSG(RSP, "CMD_RSP(%d): %d RSP(%d)= 0x%.8x",
+ opcode, cmd->error, resp, cmd->resp[0]);
+ if (cmd->error == 0) {
+ switch (resp) {
+ case RESP_R1:
+ case RESP_R1B:
+ msdc_dump_card_status(host, cmd->resp[0]);
+ break;
+ case RESP_R3:
+ msdc_dump_ocr_reg(host, cmd->resp[0]);
+ break;
+ case RESP_R5:
+ msdc_dump_io_resp(host, cmd->resp[0]);
+ break;
+ case RESP_R6:
+ msdc_dump_rca_resp(host, cmd->resp[0]);
+ break;
+ }
+ }
+ break;
+ }
+#endif
+
+ /* do we need to save card's RCA when SD_SEND_RELATIVE_ADDR */
+
+ if (!tune) {
+ return cmd->error;
+ }
+
+ /* memory card CRC */
+ if(host->hw->flags & MSDC_REMOVABLE && cmd->error == (unsigned int)(-EIO) ) {
+ if (sdr_read32(SDC_CMD) & 0x1800) { /* check if has data phase */
+ msdc_abort_data(host);
+ } else {
+ /* do basic: reset*/
+ msdc_reset();
+ msdc_clr_fifo();
+ msdc_clr_int();
+ }
+ cmd->error = msdc_tune_cmdrsp(host,cmd);
+ }
+
+ // check DAT0
+ /* if (resp == RESP_R1B) {
+ while ((sdr_read32(MSDC_PS) & 0x10000) != 0x10000);
+ } */
+ /* CMD12 Error Handle */
+
+ return cmd->error;
+}
+
+static unsigned int msdc_do_command(struct msdc_host *host,
+ struct mmc_command *cmd,
+ int tune,
+ unsigned long timeout)
+{
+ if (msdc_command_start(host, cmd, tune, timeout))
+ goto end;
+
+ if (msdc_command_resp(host, cmd, tune, timeout))
+ goto end;
+
+end:
+
+ N_MSG(CMD, " return<%d> resp<0x%.8x>", cmd->error, cmd->resp[0]);
+ return cmd->error;
+}
+
+/* The abort condition when PIO read/write
+ tmo:
+*/
+static int msdc_pio_abort(struct msdc_host *host, struct mmc_data *data, unsigned long tmo)
+{
+ int ret = 0;
+ u32 base = host->base;
+
+ if (atomic_read(&host->abort)) {
+ ret = 1;
+ }
+
+ if (time_after(jiffies, tmo)) {
+ data->error = (unsigned int)-ETIMEDOUT;
+ ERR_MSG("XXX PIO Data Timeout: CMD<%d>", host->mrq->cmd->opcode);
+ ret = 1;
+ }
+
+ if(ret) {
+ msdc_reset();
+ msdc_clr_fifo();
+ msdc_clr_int();
+ ERR_MSG("msdc pio find abort");
+ }
+ return ret;
+}
+
+/*
+ Need to add a timeout, or WDT timeout, system reboot.
+*/
+// pio mode data read/write
+static int msdc_pio_read(struct msdc_host *host, struct mmc_data *data)
+{
+ struct scatterlist *sg = data->sg;
+ u32 base = host->base;
+ u32 num = data->sg_len;
+ u32 *ptr;
+ u8 *u8ptr;
+ u32 left = 0;
+ u32 count, size = 0;
+ u32 wints = MSDC_INTEN_DATTMO | MSDC_INTEN_DATCRCERR ;
+ unsigned long tmo = jiffies + DAT_TIMEOUT;
+
+ sdr_set_bits(MSDC_INTEN, wints);
+ while (num) {
+ left = sg_dma_len(sg);
+ ptr = sg_virt(sg);
+ while (left) {
+ if ((left >= MSDC_FIFO_THD) && (msdc_rxfifocnt() >= MSDC_FIFO_THD)) {
+ count = MSDC_FIFO_THD >> 2;
+ do {
+ *ptr++ = msdc_fifo_read32();
+ } while (--count);
+ left -= MSDC_FIFO_THD;
+ } else if ((left < MSDC_FIFO_THD) && msdc_rxfifocnt() >= left) {
+ while (left > 3) {
+ *ptr++ = msdc_fifo_read32();
+ left -= 4;
+ }
+
+ u8ptr = (u8 *)ptr;
+ while(left) {
+ * u8ptr++ = msdc_fifo_read8();
+ left--;
+ }
+ }
+
+ if (msdc_pio_abort(host, data, tmo)) {
+ goto end;
+ }
+ }
+ size += sg_dma_len(sg);
+ sg = sg_next(sg); num--;
+ }
+end:
+ data->bytes_xfered += size;
+ N_MSG(FIO, " PIO Read<%d>bytes", size);
+
+ sdr_clr_bits(MSDC_INTEN, wints);
+ if(data->error) ERR_MSG("read pio data->error<%d> left<%d> size<%d>", data->error, left, size);
+ return data->error;
+}
+
+/* please make sure won't using PIO when size >= 512
+ which means, memory card block read/write won't using pio
+ then don't need to handle the CMD12 when data error.
+*/
+static int msdc_pio_write(struct msdc_host* host, struct mmc_data *data)
+{
+ u32 base = host->base;
+ struct scatterlist *sg = data->sg;
+ u32 num = data->sg_len;
+ u32 *ptr;
+ u8 *u8ptr;
+ u32 left;
+ u32 count, size = 0;
+ u32 wints = MSDC_INTEN_DATTMO | MSDC_INTEN_DATCRCERR ;
+ unsigned long tmo = jiffies + DAT_TIMEOUT;
+
+ sdr_set_bits(MSDC_INTEN, wints);
+ while (num) {
+ left = sg_dma_len(sg);
+ ptr = sg_virt(sg);
+
+ while (left) {
+ if (left >= MSDC_FIFO_SZ && msdc_txfifocnt() == 0) {
+ count = MSDC_FIFO_SZ >> 2;
+ do {
+ msdc_fifo_write32(*ptr); ptr++;
+ } while (--count);
+ left -= MSDC_FIFO_SZ;
+ } else if (left < MSDC_FIFO_SZ && msdc_txfifocnt() == 0) {
+ while (left > 3) {
+ msdc_fifo_write32(*ptr); ptr++;
+ left -= 4;
+ }
+
+ u8ptr = (u8*)ptr;
+ while(left){
+ msdc_fifo_write8(*u8ptr); u8ptr++;
+ left--;
+ }
+ }
+
+ if (msdc_pio_abort(host, data, tmo)) {
+ goto end;
+ }
+ }
+ size += sg_dma_len(sg);
+ sg = sg_next(sg); num--;
+ }
+end:
+ data->bytes_xfered += size;
+ N_MSG(FIO, " PIO Write<%d>bytes", size);
+ if(data->error) ERR_MSG("write pio data->error<%d>", data->error);
+
+ sdr_clr_bits(MSDC_INTEN, wints);
+ return data->error;
+}
+
+#if 0 /* --- by chhung */
+// DMA resume / start / stop
+static void msdc_dma_resume(struct msdc_host *host)
+{
+ u32 base = host->base;
+
+ sdr_set_field(MSDC_DMA_CTRL, MSDC_DMA_CTRL_RESUME, 1);
+
+ N_MSG(DMA, "DMA resume");
+}
+#endif /* end of --- */
+
+static void msdc_dma_start(struct msdc_host *host)
+{
+ u32 base = host->base;
+ u32 wints = MSDC_INTEN_XFER_COMPL | MSDC_INTEN_DATTMO | MSDC_INTEN_DATCRCERR ;
+
+ sdr_set_bits(MSDC_INTEN, wints);
+ //dsb(); /* --- by chhung */
+ sdr_set_field(MSDC_DMA_CTRL, MSDC_DMA_CTRL_START, 1);
+
+ N_MSG(DMA, "DMA start");
+}
+
+static void msdc_dma_stop(struct msdc_host *host)
+{
+ u32 base = host->base;
+ //u32 retries=500;
+ u32 wints = MSDC_INTEN_XFER_COMPL | MSDC_INTEN_DATTMO | MSDC_INTEN_DATCRCERR ;
+
+ N_MSG(DMA, "DMA status: 0x%.8x",sdr_read32(MSDC_DMA_CFG));
+ //while (sdr_read32(MSDC_DMA_CFG) & MSDC_DMA_CFG_STS);
+
+ sdr_set_field(MSDC_DMA_CTRL, MSDC_DMA_CTRL_STOP, 1);
+ while (sdr_read32(MSDC_DMA_CFG) & MSDC_DMA_CFG_STS);
+
+ //dsb(); /* --- by chhung */
+ sdr_clr_bits(MSDC_INTEN, wints); /* Not just xfer_comp */
+
+ N_MSG(DMA, "DMA stop");
+}
+
+#if 0 /* --- by chhung */
+/* dump a gpd list */
+static void msdc_dma_dump(struct msdc_host *host, struct msdc_dma *dma)
+{
+ gpd_t *gpd = dma->gpd;
+ bd_t *bd = dma->bd;
+ bd_t *ptr;
+ int i = 0;
+ int p_to_v;
+
+ if (dma->mode != MSDC_MODE_DMA_DESC) {
+ return;
+ }
+
+ ERR_MSG("try to dump gpd and bd");
+
+ /* dump gpd */
+ ERR_MSG(".gpd<0x%.8x> gpd_phy<0x%.8x>", (int)gpd, (int)dma->gpd_addr);
+ ERR_MSG("...hwo <%d>", gpd->hwo );
+ ERR_MSG("...bdp <%d>", gpd->bdp );
+ ERR_MSG("...chksum<0x%.8x>", gpd->chksum );
+ //ERR_MSG("...intr <0x%.8x>", gpd->intr );
+ ERR_MSG("...next <0x%.8x>", (int)gpd->next );
+ ERR_MSG("...ptr <0x%.8x>", (int)gpd->ptr );
+ ERR_MSG("...buflen<0x%.8x>", gpd->buflen );
+ //ERR_MSG("...extlen<0x%.8x>", gpd->extlen );
+ //ERR_MSG("...arg <0x%.8x>", gpd->arg );
+ //ERR_MSG("...blknum<0x%.8x>", gpd->blknum );
+ //ERR_MSG("...cmd <0x%.8x>", gpd->cmd );
+
+ /* dump bd */
+ ERR_MSG(".bd<0x%.8x> bd_phy<0x%.8x> gpd_ptr<0x%.8x>", (int)bd, (int)dma->bd_addr, (int)gpd->ptr);
+ ptr = bd;
+ p_to_v = ((u32)bd - (u32)dma->bd_addr);
+ while (1) {
+ ERR_MSG(".bd[%d]", i); i++;
+ ERR_MSG("...eol <%d>", ptr->eol );
+ ERR_MSG("...chksum<0x%.8x>", ptr->chksum );
+ //ERR_MSG("...blkpad<0x%.8x>", ptr->blkpad );
+ //ERR_MSG("...dwpad <0x%.8x>", ptr->dwpad );
+ ERR_MSG("...next <0x%.8x>", (int)ptr->next );
+ ERR_MSG("...ptr <0x%.8x>", (int)ptr->ptr );
+ ERR_MSG("...buflen<0x%.8x>", (int)ptr->buflen );
+
+ if (ptr->eol == 1) {
+ break;
+ }
+
+ /* find the next bd, virtual address of ptr->next */
+ /* don't need to enable when use malloc */
+ //BUG_ON( (ptr->next + p_to_v)!=(ptr+1) );
+ //ERR_MSG(".next bd<0x%.8x><0x%.8x>", (ptr->next + p_to_v), (ptr+1));
+ ptr++;
+ }
+
+ ERR_MSG("dump gpd and bd finished");
+}
+#endif /* end of --- */
+
+/* calc checksum */
+static u8 msdc_dma_calcs(u8 *buf, u32 len)
+{
+ u32 i, sum = 0;
+ for (i = 0; i < len; i++) {
+ sum += buf[i];
+ }
+ return 0xFF - (u8)sum;
+}
+
+/* gpd bd setup + dma registers */
+static int msdc_dma_config(struct msdc_host *host, struct msdc_dma *dma)
+{
+ u32 base = host->base;
+ u32 sglen = dma->sglen;
+ //u32 i, j, num, bdlen, arg, xfersz;
+ u32 j, num, bdlen;
+ u8 blkpad, dwpad, chksum;
+ struct scatterlist *sg = dma->sg;
+ gpd_t *gpd;
+ bd_t *bd;
+
+ switch (dma->mode) {
+ case MSDC_MODE_DMA_BASIC:
+ BUG_ON(dma->xfersz > 65535);
+ BUG_ON(dma->sglen != 1);
+ sdr_write32(MSDC_DMA_SA, PHYSADDR(sg_dma_address(sg)));
+ sdr_set_field(MSDC_DMA_CTRL, MSDC_DMA_CTRL_LASTBUF, 1);
+//#if defined (CONFIG_RALINK_MT7620)
+ if (ralink_soc == MT762X_SOC_MT7620A)
+ sdr_set_field(MSDC_DMA_CTRL, MSDC_DMA_CTRL_XFERSZ, sg_dma_len(sg));
+//#elif defined (CONFIG_RALINK_MT7621) || defined (CONFIG_RALINK_MT7628)
+ else
+ sdr_write32((volatile u32*)(RALINK_MSDC_BASE+0xa8), sg_dma_len(sg));
+//#endif
+ sdr_set_field(MSDC_DMA_CTRL, MSDC_DMA_CTRL_BRUSTSZ, dma->burstsz);
+ sdr_set_field(MSDC_DMA_CTRL, MSDC_DMA_CTRL_MODE, 0);
+ break;
+ case MSDC_MODE_DMA_DESC:
+ blkpad = (dma->flags & DMA_FLAG_PAD_BLOCK) ? 1 : 0;
+ dwpad = (dma->flags & DMA_FLAG_PAD_DWORD) ? 1 : 0;
+ chksum = (dma->flags & DMA_FLAG_EN_CHKSUM) ? 1 : 0;
+
+ /* calculate the required number of gpd */
+ num = (sglen + MAX_BD_PER_GPD - 1) / MAX_BD_PER_GPD;
+ BUG_ON(num !=1 );
+
+ gpd = dma->gpd;
+ bd = dma->bd;
+ bdlen = sglen;
+
+ /* modify gpd*/
+ //gpd->intr = 0;
+ gpd->hwo = 1; /* hw will clear it */
+ gpd->bdp = 1;
+ gpd->chksum = 0; /* need to clear first. */
+ gpd->chksum = (chksum ? msdc_dma_calcs((u8 *)gpd, 16) : 0);
+
+ /* modify bd*/
+ for (j = 0; j < bdlen; j++) {
+ msdc_init_bd(&bd[j], blkpad, dwpad, sg_dma_address(sg), sg_dma_len(sg));
+ if(j == bdlen - 1) {
+ bd[j].eol = 1; /* the last bd */
+ } else {
+ bd[j].eol = 0;
+ }
+ bd[j].chksum = 0; /* checksume need to clear first */
+ bd[j].chksum = (chksum ? msdc_dma_calcs((u8 *)(&bd[j]), 16) : 0);
+ sg++;
+ }
+
+ dma->used_gpd += 2;
+ dma->used_bd += bdlen;
+
+ sdr_set_field(MSDC_DMA_CFG, MSDC_DMA_CFG_DECSEN, chksum);
+ sdr_set_field(MSDC_DMA_CTRL, MSDC_DMA_CTRL_BRUSTSZ, dma->burstsz);
+ sdr_set_field(MSDC_DMA_CTRL, MSDC_DMA_CTRL_MODE, 1);
+
+ sdr_write32(MSDC_DMA_SA, PHYSADDR((u32)dma->gpd_addr));
+ break;
+
+ default:
+ break;
+ }
+
+ N_MSG(DMA, "DMA_CTRL = 0x%x", sdr_read32(MSDC_DMA_CTRL));
+ N_MSG(DMA, "DMA_CFG = 0x%x", sdr_read32(MSDC_DMA_CFG));
+ N_MSG(DMA, "DMA_SA = 0x%x", sdr_read32(MSDC_DMA_SA));
+
+ return 0;
+}
+
+static void msdc_dma_setup(struct msdc_host *host, struct msdc_dma *dma,
+ struct scatterlist *sg, unsigned int sglen)
+{
+ BUG_ON(sglen > MAX_BD_NUM); /* not support currently */
+
+ dma->sg = sg;
+ dma->flags = DMA_FLAG_EN_CHKSUM;
+ //dma->flags = DMA_FLAG_NONE; /* CHECKME */
+ dma->sglen = sglen;
+ dma->xfersz = host->xfer_size;
+ dma->burstsz = MSDC_BRUST_64B;
+
+ if (sglen == 1 && sg_dma_len(sg) <= MAX_DMA_CNT)
+ dma->mode = MSDC_MODE_DMA_BASIC;
+ else
+ dma->mode = MSDC_MODE_DMA_DESC;
+
+ N_MSG(DMA, "DMA mode<%d> sglen<%d> xfersz<%d>", dma->mode, dma->sglen, dma->xfersz);
+
+ msdc_dma_config(host, dma);
+
+ /*if (dma->mode == MSDC_MODE_DMA_DESC) {
+ //msdc_dma_dump(host, dma);
+ } */
+}
+
+/* set block number before send command */
+static void msdc_set_blknum(struct msdc_host *host, u32 blknum)
+{
+ u32 base = host->base;
+
+ sdr_write32(SDC_BLK_NUM, blknum);
+}
+
+static int msdc_do_request(struct mmc_host*mmc, struct mmc_request*mrq)
+{
+ struct msdc_host *host = mmc_priv(mmc);
+ struct mmc_command *cmd;
+ struct mmc_data *data;
+ u32 base = host->base;
+ //u32 intsts = 0;
+ unsigned int left=0;
+ int dma = 0, read = 1, dir = DMA_FROM_DEVICE, send_type=0;
+
+ #define SND_DAT 0
+ #define SND_CMD 1
+
+ BUG_ON(mmc == NULL);
+ BUG_ON(mrq == NULL);
+
+ host->error = 0;
+ atomic_set(&host->abort, 0);
+
+ cmd = mrq->cmd;
+ data = mrq->cmd->data;
+
+#if 0 /* --- by chhung */
+ //if(host->id ==1){
+ N_MSG(OPS, "enable clock!");
+ msdc_ungate_clock(host->id);
+ //}
+#endif /* end of --- */
+
+ if (!data) {
+ send_type=SND_CMD;
+ if (msdc_do_command(host, cmd, 1, CMD_TIMEOUT) != 0) {
+ goto done;
+ }
+ } else {
+ BUG_ON(data->blksz > HOST_MAX_BLKSZ);
+ send_type=SND_DAT;
+
+ data->error = 0;
+ read = data->flags & MMC_DATA_READ ? 1 : 0;
+ host->data = data;
+ host->xfer_size = data->blocks * data->blksz;
+ host->blksz = data->blksz;
+
+ /* deside the transfer mode */
+ if (drv_mode[host->id] == MODE_PIO) {
+ host->dma_xfer = dma = 0;
+ } else if (drv_mode[host->id] == MODE_DMA) {
+ host->dma_xfer = dma = 1;
+ } else if (drv_mode[host->id] == MODE_SIZE_DEP) {
+ host->dma_xfer = dma = ((host->xfer_size >= dma_size[host->id]) ? 1 : 0);
+ }
+
+ if (read) {
+ if ((host->timeout_ns != data->timeout_ns) ||
+ (host->timeout_clks != data->timeout_clks)) {
+ msdc_set_timeout(host, data->timeout_ns, data->timeout_clks);
+ }
+ }
+
+ msdc_set_blknum(host, data->blocks);
+ //msdc_clr_fifo(); /* no need */
+
+ if (dma) {
+ msdc_dma_on(); /* enable DMA mode first!! */
+ init_completion(&host->xfer_done);
+
+ /* start the command first*/
+ if (msdc_command_start(host, cmd, 1, CMD_TIMEOUT) != 0)
+ goto done;
+
+ dir = read ? DMA_FROM_DEVICE : DMA_TO_DEVICE;
+ (void)dma_map_sg(mmc_dev(mmc), data->sg, data->sg_len, dir);
+ msdc_dma_setup(host, &host->dma, data->sg, data->sg_len);
+
+ /* then wait command done */
+ if (msdc_command_resp(host, cmd, 1, CMD_TIMEOUT) != 0)
+ goto done;
+
+ /* for read, the data coming too fast, then CRC error
+ start DMA no business with CRC. */
+ //init_completion(&host->xfer_done);
+ msdc_dma_start(host);
+
+ spin_unlock(&host->lock);
+ if(!wait_for_completion_timeout(&host->xfer_done, DAT_TIMEOUT)){
+ ERR_MSG("XXX CMD<%d> wait xfer_done<%d> timeout!!", cmd->opcode, data->blocks * data->blksz);
+ ERR_MSG(" DMA_SA = 0x%x", sdr_read32(MSDC_DMA_SA));
+ ERR_MSG(" DMA_CA = 0x%x", sdr_read32(MSDC_DMA_CA));
+ ERR_MSG(" DMA_CTRL = 0x%x", sdr_read32(MSDC_DMA_CTRL));
+ ERR_MSG(" DMA_CFG = 0x%x", sdr_read32(MSDC_DMA_CFG));
+ data->error = (unsigned int)-ETIMEDOUT;
+
+ msdc_reset();
+ msdc_clr_fifo();
+ msdc_clr_int();
+ }
+ spin_lock(&host->lock);
+ msdc_dma_stop(host);
+ } else {
+ /* Firstly: send command */
+ if (msdc_do_command(host, cmd, 1, CMD_TIMEOUT) != 0) {
+ goto done;
+ }
+
+ /* Secondly: pio data phase */
+ if (read) {
+ if (msdc_pio_read(host, data)){
+ goto done;
+ }
+ } else {
+ if (msdc_pio_write(host, data)) {
+ goto done;
+ }
+ }
+
+ /* For write case: make sure contents in fifo flushed to device */
+ if (!read) {
+ while (1) {
+ left=msdc_txfifocnt();
+ if (left == 0) {
+ break;
+ }
+ if (msdc_pio_abort(host, data, jiffies + DAT_TIMEOUT)) {
+ break;
+ /* Fix me: what about if data error, when stop ? how to? */
+ }
+ }
+ } else {
+ /* Fix me: read case: need to check CRC error */
+ }
+
+ /* For write case: SDCBUSY and Xfer_Comp will assert when DAT0 not busy.
+ For read case : SDCBUSY and Xfer_Comp will assert when last byte read out from FIFO.
+ */
+
+ /* try not to wait xfer_comp interrupt.
+ the next command will check SDC_BUSY.
+ SDC_BUSY means xfer_comp assert
+ */
+
+ } // PIO mode
+
+ /* Last: stop transfer */
+ if (data->stop){
+ if (msdc_do_command(host, data->stop, 0, CMD_TIMEOUT) != 0) {
+ goto done;
+ }
+ }
+ }
+
+done:
+ if (data != NULL) {
+ host->data = NULL;
+ host->dma_xfer = 0;
+ if (dma != 0) {
+ msdc_dma_off();
+ host->dma.used_bd = 0;
+ host->dma.used_gpd = 0;
+ dma_unmap_sg(mmc_dev(mmc), data->sg, data->sg_len, dir);
+ }
+ host->blksz = 0;
+
+#if 0 // don't stop twice!
+ if(host->hw->flags & MSDC_REMOVABLE && data->error) {
+ msdc_abort_data(host);
+ /* reset in IRQ, stop command has issued. -> No need */
+ }
+#endif
+
+ N_MSG(OPS, "CMD<%d> data<%s %s> blksz<%d> block<%d> error<%d>",cmd->opcode, (dma? "dma":"pio"),
+ (read ? "read ":"write") ,data->blksz, data->blocks, data->error);
+ }
+
+#if 0 /* --- by chhung */
+#if 1
+ //if(host->id==1) {
+ if(send_type==SND_CMD) {
+ if(cmd->opcode == MMC_SEND_STATUS) {
+ if((cmd->resp[0] & CARD_READY_FOR_DATA) ||(CARD_CURRENT_STATE(cmd->resp[0]) != 7)){
+ N_MSG(OPS,"disable clock, CMD13 IDLE");
+ msdc_gate_clock(host->id);
+ }
+ } else {
+ N_MSG(OPS,"disable clock, CMD<%d>", cmd->opcode);
+ msdc_gate_clock(host->id);
+ }
+ } else {
+ if(read) {
+ N_MSG(OPS,"disable clock!!! Read CMD<%d>",cmd->opcode);
+ msdc_gate_clock(host->id);
+ }
+ }
+ //}
+#else
+ msdc_gate_clock(host->id);
+#endif
+#endif /* end of --- */
+
+ if (mrq->cmd->error) host->error = 0x001;
+ if (mrq->data && mrq->data->error) host->error |= 0x010;
+ if (mrq->stop && mrq->stop->error) host->error |= 0x100;
+
+ //if (host->error) ERR_MSG("host->error<%d>", host->error);
+
+ return host->error;
+}
+
+static int msdc_app_cmd(struct mmc_host *mmc, struct msdc_host *host)
+{
+ struct mmc_command cmd;
+ struct mmc_request mrq;
+ u32 err;
+
+ memset(&cmd, 0, sizeof(struct mmc_command));
+ cmd.opcode = MMC_APP_CMD;
+#if 0 /* bug: we meet mmc->card is null when ACMD6 */
+ cmd.arg = mmc->card->rca << 16;
+#else
+ cmd.arg = host->app_cmd_arg;
+#endif
+ cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_AC;
+
+ memset(&mrq, 0, sizeof(struct mmc_request));
+ mrq.cmd = &cmd; cmd.mrq = &mrq;
+ cmd.data = NULL;
+
+ err = msdc_do_command(host, &cmd, 0, CMD_TIMEOUT);
+ return err;
+}
+
+static int msdc_tune_cmdrsp(struct msdc_host*host, struct mmc_command *cmd)
+{
+ int result = -1;
+ u32 base = host->base;
+ u32 rsmpl, cur_rsmpl, orig_rsmpl;
+ u32 rrdly, cur_rrdly = 0xffffffff, orig_rrdly;
+ u32 skip = 1;
+
+ /* ==== don't support 3.0 now ====
+ 1: R_SMPL[1]
+ 2: PAD_CMD_RESP_RXDLY[26:22]
+ ==========================*/
+
+ // save the previous tune result
+ sdr_get_field(MSDC_IOCON, MSDC_IOCON_RSPL, orig_rsmpl);
+ sdr_get_field(MSDC_PAD_TUNE, MSDC_PAD_TUNE_CMDRRDLY, orig_rrdly);
+
+ rrdly = 0;
+ do {
+ for (rsmpl = 0; rsmpl < 2; rsmpl++) {
+ /* Lv1: R_SMPL[1] */
+ cur_rsmpl = (orig_rsmpl + rsmpl) % 2;
+ if (skip == 1) {
+ skip = 0;
+ continue;
+ }
+ sdr_set_field(MSDC_IOCON, MSDC_IOCON_RSPL, cur_rsmpl);
+
+ if (host->app_cmd) {
+ result = msdc_app_cmd(host->mmc, host);
+ if (result) {
+ ERR_MSG("TUNE_CMD app_cmd<%d> failed: RESP_RXDLY<%d>,R_SMPL<%d>",
+ host->mrq->cmd->opcode, cur_rrdly, cur_rsmpl);
+ continue;
+ }
+ }
+ result = msdc_do_command(host, cmd, 0, CMD_TIMEOUT); // not tune.
+ ERR_MSG("TUNE_CMD<%d> %s PAD_CMD_RESP_RXDLY[26:22]<%d> R_SMPL[1]<%d>", cmd->opcode,
+ (result == 0) ? "PASS" : "FAIL", cur_rrdly, cur_rsmpl);
+
+ if (result == 0) {
+ return 0;
+ }
+ if (result != (unsigned int)(-EIO)) {
+ ERR_MSG("TUNE_CMD<%d> Error<%d> not -EIO", cmd->opcode, result);
+ return result;
+ }
+
+ /* should be EIO */
+ if (sdr_read32(SDC_CMD) & 0x1800) { /* check if has data phase */
+ msdc_abort_data(host);
+ }
+ }
+
+ /* Lv2: PAD_CMD_RESP_RXDLY[26:22] */
+ cur_rrdly = (orig_rrdly + rrdly + 1) % 32;
+ sdr_set_field(MSDC_PAD_TUNE, MSDC_PAD_TUNE_CMDRRDLY, cur_rrdly);
+ }while (++rrdly < 32);
+
+ return result;
+}
+
+/* Support SD2.0 Only */
+static int msdc_tune_bread(struct mmc_host *mmc, struct mmc_request *mrq)
+{
+ struct msdc_host *host = mmc_priv(mmc);
+ u32 base = host->base;
+ u32 ddr=0;
+ u32 dcrc=0;
+ u32 rxdly, cur_rxdly0, cur_rxdly1;
+ u32 dsmpl, cur_dsmpl, orig_dsmpl;
+ u32 cur_dat0, cur_dat1, cur_dat2, cur_dat3;
+ u32 cur_dat4, cur_dat5, cur_dat6, cur_dat7;
+ u32 orig_dat0, orig_dat1, orig_dat2, orig_dat3;
+ u32 orig_dat4, orig_dat5, orig_dat6, orig_dat7;
+ int result = -1;
+ u32 skip = 1;
+
+ sdr_get_field(MSDC_IOCON, MSDC_IOCON_DSPL, orig_dsmpl);
+
+ /* Tune Method 2. */
+ sdr_set_field(MSDC_IOCON, MSDC_IOCON_DDLSEL, 1);
+
+ rxdly = 0;
+ do {
+ for (dsmpl = 0; dsmpl < 2; dsmpl++) {
+ cur_dsmpl = (orig_dsmpl + dsmpl) % 2;
+ if (skip == 1) {
+ skip = 0;
+ continue;
+ }
+ sdr_set_field(MSDC_IOCON, MSDC_IOCON_DSPL, cur_dsmpl);
+
+ if (host->app_cmd) {
+ result = msdc_app_cmd(host->mmc, host);
+ if (result) {
+ ERR_MSG("TUNE_BREAD app_cmd<%d> failed", host->mrq->cmd->opcode);
+ continue;
+ }
+ }
+ result = msdc_do_request(mmc,mrq);
+
+ sdr_get_field(SDC_DCRC_STS, SDC_DCRC_STS_POS|SDC_DCRC_STS_NEG, dcrc); /* RO */
+ if (!ddr) dcrc &= ~SDC_DCRC_STS_NEG;
+ ERR_MSG("TUNE_BREAD<%s> dcrc<0x%x> DATRDDLY0/1<0x%x><0x%x> dsmpl<0x%x>",
+ (result == 0 && dcrc == 0) ? "PASS" : "FAIL", dcrc,
+ sdr_read32(MSDC_DAT_RDDLY0), sdr_read32(MSDC_DAT_RDDLY1), cur_dsmpl);
+
+ /* Fix me: result is 0, but dcrc is still exist */
+ if (result == 0 && dcrc == 0) {
+ goto done;
+ } else {
+ /* there is a case: command timeout, and data phase not processed */
+ if (mrq->data->error != 0 && mrq->data->error != (unsigned int)(-EIO)) {
+ ERR_MSG("TUNE_READ: result<0x%x> cmd_error<%d> data_error<%d>",
+ result, mrq->cmd->error, mrq->data->error);
+ goto done;
+ }
+ }
+ }
+
+ cur_rxdly0 = sdr_read32(MSDC_DAT_RDDLY0);
+ cur_rxdly1 = sdr_read32(MSDC_DAT_RDDLY1);
+
+ /* E1 ECO. YD: Reverse */
+ if (sdr_read32(MSDC_ECO_VER) >= 4) {
+ orig_dat0 = (cur_rxdly0 >> 24) & 0x1F;
+ orig_dat1 = (cur_rxdly0 >> 16) & 0x1F;
+ orig_dat2 = (cur_rxdly0 >> 8) & 0x1F;
+ orig_dat3 = (cur_rxdly0 >> 0) & 0x1F;
+ orig_dat4 = (cur_rxdly1 >> 24) & 0x1F;
+ orig_dat5 = (cur_rxdly1 >> 16) & 0x1F;
+ orig_dat6 = (cur_rxdly1 >> 8) & 0x1F;
+ orig_dat7 = (cur_rxdly1 >> 0) & 0x1F;
+ } else {
+ orig_dat0 = (cur_rxdly0 >> 0) & 0x1F;
+ orig_dat1 = (cur_rxdly0 >> 8) & 0x1F;
+ orig_dat2 = (cur_rxdly0 >> 16) & 0x1F;
+ orig_dat3 = (cur_rxdly0 >> 24) & 0x1F;
+ orig_dat4 = (cur_rxdly1 >> 0) & 0x1F;
+ orig_dat5 = (cur_rxdly1 >> 8) & 0x1F;
+ orig_dat6 = (cur_rxdly1 >> 16) & 0x1F;
+ orig_dat7 = (cur_rxdly1 >> 24) & 0x1F;
+ }
+
+ if (ddr) {
+ cur_dat0 = (dcrc & (1 << 0) || dcrc & (1 << 8)) ? ((orig_dat0 + 1) % 32) : orig_dat0;
+ cur_dat1 = (dcrc & (1 << 1) || dcrc & (1 << 9)) ? ((orig_dat1 + 1) % 32) : orig_dat1;
+ cur_dat2 = (dcrc & (1 << 2) || dcrc & (1 << 10)) ? ((orig_dat2 + 1) % 32) : orig_dat2;
+ cur_dat3 = (dcrc & (1 << 3) || dcrc & (1 << 11)) ? ((orig_dat3 + 1) % 32) : orig_dat3;
+ } else {
+ cur_dat0 = (dcrc & (1 << 0)) ? ((orig_dat0 + 1) % 32) : orig_dat0;
+ cur_dat1 = (dcrc & (1 << 1)) ? ((orig_dat1 + 1) % 32) : orig_dat1;
+ cur_dat2 = (dcrc & (1 << 2)) ? ((orig_dat2 + 1) % 32) : orig_dat2;
+ cur_dat3 = (dcrc & (1 << 3)) ? ((orig_dat3 + 1) % 32) : orig_dat3;
+ }
+ cur_dat4 = (dcrc & (1 << 4)) ? ((orig_dat4 + 1) % 32) : orig_dat4;
+ cur_dat5 = (dcrc & (1 << 5)) ? ((orig_dat5 + 1) % 32) : orig_dat5;
+ cur_dat6 = (dcrc & (1 << 6)) ? ((orig_dat6 + 1) % 32) : orig_dat6;
+ cur_dat7 = (dcrc & (1 << 7)) ? ((orig_dat7 + 1) % 32) : orig_dat7;
+
+ cur_rxdly0 = (cur_dat0 << 24) | (cur_dat1 << 16) | (cur_dat2 << 8) | (cur_dat3 << 0);
+ cur_rxdly1 = (cur_dat4 << 24) | (cur_dat5 << 16) | (cur_dat6 << 8) | (cur_dat7 << 0);
+
+ sdr_write32(MSDC_DAT_RDDLY0, cur_rxdly0);
+ sdr_write32(MSDC_DAT_RDDLY1, cur_rxdly1);
+
+ } while (++rxdly < 32);
+
+done:
+ return result;
+}
+
+static int msdc_tune_bwrite(struct mmc_host *mmc,struct mmc_request *mrq)
+{
+ struct msdc_host *host = mmc_priv(mmc);
+ u32 base = host->base;
+
+ u32 wrrdly, cur_wrrdly = 0xffffffff, orig_wrrdly;
+ u32 dsmpl, cur_dsmpl, orig_dsmpl;
+ u32 rxdly, cur_rxdly0;
+ u32 orig_dat0, orig_dat1, orig_dat2, orig_dat3;
+ u32 cur_dat0, cur_dat1, cur_dat2, cur_dat3;
+ int result = -1;
+ u32 skip = 1;
+
+ // MSDC_IOCON_DDR50CKD need to check. [Fix me]
+
+ sdr_get_field(MSDC_PAD_TUNE, MSDC_PAD_TUNE_DATWRDLY, orig_wrrdly);
+ sdr_get_field(MSDC_IOCON, MSDC_IOCON_DSPL, orig_dsmpl );
+
+ /* Tune Method 2. just DAT0 */
+ sdr_set_field(MSDC_IOCON, MSDC_IOCON_DDLSEL, 1);
+ cur_rxdly0 = sdr_read32(MSDC_DAT_RDDLY0);
+
+ /* E1 ECO. YD: Reverse */
+ if (sdr_read32(MSDC_ECO_VER) >= 4) {
+ orig_dat0 = (cur_rxdly0 >> 24) & 0x1F;
+ orig_dat1 = (cur_rxdly0 >> 16) & 0x1F;
+ orig_dat2 = (cur_rxdly0 >> 8) & 0x1F;
+ orig_dat3 = (cur_rxdly0 >> 0) & 0x1F;
+ } else {
+ orig_dat0 = (cur_rxdly0 >> 0) & 0x1F;
+ orig_dat1 = (cur_rxdly0 >> 8) & 0x1F;
+ orig_dat2 = (cur_rxdly0 >> 16) & 0x1F;
+ orig_dat3 = (cur_rxdly0 >> 24) & 0x1F;
+ }
+
+ rxdly = 0;
+ do {
+ wrrdly = 0;
+ do {
+ for (dsmpl = 0; dsmpl < 2; dsmpl++) {
+ cur_dsmpl = (orig_dsmpl + dsmpl) % 2;
+ if (skip == 1) {
+ skip = 0;
+ continue;
+ }
+ sdr_set_field(MSDC_IOCON, MSDC_IOCON_DSPL, cur_dsmpl);
+
+ if (host->app_cmd) {
+ result = msdc_app_cmd(host->mmc, host);
+ if (result) {
+ ERR_MSG("TUNE_BWRITE app_cmd<%d> failed", host->mrq->cmd->opcode);
+ continue;
+ }
+ }
+ result = msdc_do_request(mmc,mrq);
+
+ ERR_MSG("TUNE_BWRITE<%s> DSPL<%d> DATWRDLY<%d> MSDC_DAT_RDDLY0<0x%x>",
+ result == 0 ? "PASS" : "FAIL",
+ cur_dsmpl, cur_wrrdly, cur_rxdly0);
+
+ if (result == 0) {
+ goto done;
+ }
+ else {
+ /* there is a case: command timeout, and data phase not processed */
+ if (mrq->data->error != (unsigned int)(-EIO)) {
+ ERR_MSG("TUNE_READ: result<0x%x> cmd_error<%d> data_error<%d>",
+ result, mrq->cmd->error, mrq->data->error);
+ goto done;
+ }
+ }
+ }
+ cur_wrrdly = (orig_wrrdly + wrrdly + 1) % 32;
+ sdr_set_field(MSDC_PAD_TUNE, MSDC_PAD_TUNE_DATWRDLY, cur_wrrdly);
+ } while (++wrrdly < 32);
+
+ cur_dat0 = (orig_dat0 + rxdly) % 32; /* only adjust bit-1 for crc */
+ cur_dat1 = orig_dat1;
+ cur_dat2 = orig_dat2;
+ cur_dat3 = orig_dat3;
+
+ cur_rxdly0 = (cur_dat0 << 24) | (cur_dat1 << 16) | (cur_dat2 << 8) | (cur_dat3 << 0);
+ sdr_write32(MSDC_DAT_RDDLY0, cur_rxdly0);
+ } while (++rxdly < 32);
+
+done:
+ return result;
+}
+
+static int msdc_get_card_status(struct mmc_host *mmc, struct msdc_host *host, u32 *status)
+{
+ struct mmc_command cmd;
+ struct mmc_request mrq;
+ u32 err;
+
+ memset(&cmd, 0, sizeof(struct mmc_command));
+ cmd.opcode = MMC_SEND_STATUS;
+ if (mmc->card) {
+ cmd.arg = mmc->card->rca << 16;
+ } else {
+ ERR_MSG("cmd13 mmc card is null");
+ cmd.arg = host->app_cmd_arg;
+ }
+ cmd.flags = MMC_RSP_SPI_R2 | MMC_RSP_R1 | MMC_CMD_AC;
+
+ memset(&mrq, 0, sizeof(struct mmc_request));
+ mrq.cmd = &cmd; cmd.mrq = &mrq;
+ cmd.data = NULL;
+
+ err = msdc_do_command(host, &cmd, 1, CMD_TIMEOUT);
+
+ if (status) {
+ *status = cmd.resp[0];
+ }
+
+ return err;
+}
+
+static int msdc_check_busy(struct mmc_host *mmc, struct msdc_host *host)
+{
+ u32 err = 0;
+ u32 status = 0;
+
+ do {
+ err = msdc_get_card_status(mmc, host, &status);
+ if (err) return err;
+ /* need cmd12? */
+ ERR_MSG("cmd<13> resp<0x%x>", status);
+ } while (R1_CURRENT_STATE(status) == 7);
+
+ return err;
+}
+
+/* failed when msdc_do_request */
+static int msdc_tune_request(struct mmc_host *mmc, struct mmc_request *mrq)
+{
+ struct msdc_host *host = mmc_priv(mmc);
+ struct mmc_command *cmd;
+ struct mmc_data *data;
+ //u32 base = host->base;
+ int ret=0, read;
+
+ cmd = mrq->cmd;
+ data = mrq->cmd->data;
+
+ read = data->flags & MMC_DATA_READ ? 1 : 0;
+
+ if (read) {
+ if (data->error == (unsigned int)(-EIO)) {
+ ret = msdc_tune_bread(mmc,mrq);
+ }
+ } else {
+ ret = msdc_check_busy(mmc, host);
+ if (ret){
+ ERR_MSG("XXX cmd13 wait program done failed");
+ return ret;
+ }
+ /* CRC and TO */
+ /* Fix me: don't care card status? */
+ ret = msdc_tune_bwrite(mmc,mrq);
+ }
+
+ return ret;
+}
+
+/* ops.request */
+static void msdc_ops_request(struct mmc_host *mmc,struct mmc_request *mrq)
+{
+ struct msdc_host *host = mmc_priv(mmc);
+
+ //=== for sdio profile ===
+#if 0 /* --- by chhung */
+ u32 old_H32, old_L32, new_H32, new_L32;
+ u32 ticks = 0, opcode = 0, sizes = 0, bRx = 0;
+#endif /* end of --- */
+
+ if(host->mrq){
+ ERR_MSG("XXX host->mrq<0x%.8x>", (int)host->mrq);
+ BUG();
+ }
+
+ if (!is_card_present(host) || host->power_mode == MMC_POWER_OFF) {
+ ERR_MSG("cmd<%d> card<%d> power<%d>", mrq->cmd->opcode, is_card_present(host), host->power_mode);
+ mrq->cmd->error = (unsigned int)-ENOMEDIUM;
+
+#if 1
+ mrq->done(mrq); // call done directly.
+#else
+ mrq->cmd->retries = 0; // please don't retry.
+ mmc_request_done(mmc, mrq);
+#endif
+
+ return;
+ }
+
+ /* start to process */
+ spin_lock(&host->lock);
+#if 0 /* --- by chhung */
+ if (sdio_pro_enable) { //=== for sdio profile ===
+ if (mrq->cmd->opcode == 52 || mrq->cmd->opcode == 53) {
+ GPT_GetCounter64(&old_L32, &old_H32);
+ }
+ }
+#endif /* end of --- */
+
+ host->mrq = mrq;
+
+ if (msdc_do_request(mmc,mrq)) {
+ if(host->hw->flags & MSDC_REMOVABLE && ralink_soc == MT762X_SOC_MT7621AT && mrq->data && mrq->data->error) {
+ msdc_tune_request(mmc,mrq);
+ }
+ }
+
+ /* ==== when request done, check if app_cmd ==== */
+ if (mrq->cmd->opcode == MMC_APP_CMD) {
+ host->app_cmd = 1;
+ host->app_cmd_arg = mrq->cmd->arg; /* save the RCA */
+ } else {
+ host->app_cmd = 0;
+ //host->app_cmd_arg = 0;
+ }
+
+ host->mrq = NULL;
+
+#if 0 /* --- by chhung */
+ //=== for sdio profile ===
+ if (sdio_pro_enable) {
+ if (mrq->cmd->opcode == 52 || mrq->cmd->opcode == 53) {
+ GPT_GetCounter64(&new_L32, &new_H32);
+ ticks = msdc_time_calc(old_L32, old_H32, new_L32, new_H32);
+
+ opcode = mrq->cmd->opcode;
+ if (mrq->cmd->data) {
+ sizes = mrq->cmd->data->blocks * mrq->cmd->data->blksz;
+ bRx = mrq->cmd->data->flags & MMC_DATA_READ ? 1 : 0 ;
+ } else {
+ bRx = mrq->cmd->arg & 0x80000000 ? 1 : 0;
+ }
+
+ if (!mrq->cmd->error) {
+ msdc_performance(opcode, sizes, bRx, ticks);
+ }
+ }
+ }
+#endif /* end of --- */
+ spin_unlock(&host->lock);
+
+ mmc_request_done(mmc, mrq);
+
+ return;
+}
+
+/* called by ops.set_ios */
+static void msdc_set_buswidth(struct msdc_host *host, u32 width)
+{
+ u32 base = host->base;
+ u32 val = sdr_read32(SDC_CFG);
+
+ val &= ~SDC_CFG_BUSWIDTH;
+
+ switch (width) {
+ default:
+ case MMC_BUS_WIDTH_1:
+ width = 1;
+ val |= (MSDC_BUS_1BITS << 16);
+ break;
+ case MMC_BUS_WIDTH_4:
+ val |= (MSDC_BUS_4BITS << 16);
+ break;
+ case MMC_BUS_WIDTH_8:
+ val |= (MSDC_BUS_8BITS << 16);
+ break;
+ }
+
+ sdr_write32(SDC_CFG, val);
+
+ N_MSG(CFG, "Bus Width = %d", width);
+}
+
+/* ops.set_ios */
+static void msdc_ops_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
+{
+ struct msdc_host *host = mmc_priv(mmc);
+ struct msdc_hw *hw=host->hw;
+ u32 base = host->base;
+ u32 ddr = 0;
+
+#ifdef MT6575_SD_DEBUG
+ static char *vdd[] = {
+ "1.50v", "1.55v", "1.60v", "1.65v", "1.70v", "1.80v", "1.90v",
+ "2.00v", "2.10v", "2.20v", "2.30v", "2.40v", "2.50v", "2.60v",
+ "2.70v", "2.80v", "2.90v", "3.00v", "3.10v", "3.20v", "3.30v",
+ "3.40v", "3.50v", "3.60v"
+ };
+ static char *power_mode[] = {
+ "OFF", "UP", "ON"
+ };
+ static char *bus_mode[] = {
+ "UNKNOWN", "OPENDRAIN", "PUSHPULL"
+ };
+ static char *timing[] = {
+ "LEGACY", "MMC_HS", "SD_HS"
+ };
+
+ printk("SET_IOS: CLK(%dkHz), BUS(%s), BW(%u), PWR(%s), VDD(%s), TIMING(%s)",
+ ios->clock / 1000, bus_mode[ios->bus_mode],
+ (ios->bus_width == MMC_BUS_WIDTH_4) ? 4 : 1,
+ power_mode[ios->power_mode], vdd[ios->vdd], timing[ios->timing]);
+#endif
+
+ msdc_set_buswidth(host, ios->bus_width);
+
+ /* Power control ??? */
+ switch (ios->power_mode) {
+ case MMC_POWER_OFF:
+ case MMC_POWER_UP:
+ // msdc_set_power_mode(host, ios->power_mode); /* --- by chhung */
+ break;
+ case MMC_POWER_ON:
+ host->power_mode = MMC_POWER_ON;
+ break;
+ default:
+ break;
+ }
+
+ /* Clock control */
+ if (host->mclk != ios->clock) {
+ if(ios->clock > 25000000) {
+ //if (!(host->hw->flags & MSDC_REMOVABLE)) {
+ INIT_MSG("SD data latch edge<%d>", hw->data_edge);
+ sdr_set_field(MSDC_IOCON, MSDC_IOCON_RSPL, hw->cmd_edge);
+ sdr_set_field(MSDC_IOCON, MSDC_IOCON_DSPL, hw->data_edge);
+ //} /* for tuning debug */
+ } else { /* default value */
+ sdr_write32(MSDC_IOCON, 0x00000000);
+ // sdr_write32(MSDC_DAT_RDDLY0, 0x00000000);
+ sdr_write32(MSDC_DAT_RDDLY0, 0x10101010); // for MT7620 E2 and afterward
+ sdr_write32(MSDC_DAT_RDDLY1, 0x00000000);
+ // sdr_write32(MSDC_PAD_TUNE, 0x00000000);
+ sdr_write32(MSDC_PAD_TUNE, 0x84101010); // for MT7620 E2 and afterward
+ }
+ msdc_set_mclk(host, ddr, ios->clock);
+ }
+}
+
+/* ops.get_ro */
+static int msdc_ops_get_ro(struct mmc_host *mmc)
+{
+ struct msdc_host *host = mmc_priv(mmc);
+ u32 base = host->base;
+ unsigned long flags;
+ int ro = 0;
+
+ if (host->hw->flags & MSDC_WP_PIN_EN) { /* set for card */
+ spin_lock_irqsave(&host->lock, flags);
+ ro = (sdr_read32(MSDC_PS) >> 31);
+ spin_unlock_irqrestore(&host->lock, flags);
+ }
+ return ro;
+}
+
+/* ops.get_cd */
+static int msdc_ops_get_cd(struct mmc_host *mmc)
+{
+ struct msdc_host *host = mmc_priv(mmc);
+ u32 base = host->base;
+ unsigned long flags;
+ int present = 1;
+
+ /* for sdio, MSDC_REMOVABLE not set, always return 1 */
+ if (!(host->hw->flags & MSDC_REMOVABLE)) {
+ /* For sdio, read H/W always get<1>, but may timeout some times */
+#if 1
+ host->card_inserted = 1;
+ return 1;
+#else
+ host->card_inserted = (host->pm_state.event == PM_EVENT_USER_RESUME) ? 1 : 0;
+ INIT_MSG("sdio ops_get_cd<%d>", host->card_inserted);
+ return host->card_inserted;
+#endif
+ }
+
+ /* MSDC_CD_PIN_EN set for card */
+ if (host->hw->flags & MSDC_CD_PIN_EN) {
+ spin_lock_irqsave(&host->lock, flags);
+#if 0
+ present = host->card_inserted; /* why not read from H/W: Fix me*/
+#else
+ // CD
+ if (cd_active_low)
+ present = (sdr_read32(MSDC_PS) & MSDC_PS_CDSTS) ? 0 : 1;
+ else
+ present = (sdr_read32(MSDC_PS) & MSDC_PS_CDSTS) ? 1 : 0;
+ if (host->mmc->caps & MMC_CAP_NEEDS_POLL)
+ present = 1;
+ host->card_inserted = present;
+#endif
+ spin_unlock_irqrestore(&host->lock, flags);
+ } else {
+ present = 0; /* TODO? Check DAT3 pins for card detection */
+ }
+
+ INIT_MSG("ops_get_cd return<%d>", present);
+ return present;
+}
+
+/* ops.enable_sdio_irq */
+static void msdc_ops_enable_sdio_irq(struct mmc_host *mmc, int enable)
+{
+ struct msdc_host *host = mmc_priv(mmc);
+ struct msdc_hw *hw = host->hw;
+ u32 base = host->base;
+ u32 tmp;
+
+ if (hw->flags & MSDC_EXT_SDIO_IRQ) { /* yes for sdio */
+ if (enable) {
+ hw->enable_sdio_eirq(); /* combo_sdio_enable_eirq */
+ } else {
+ hw->disable_sdio_eirq(); /* combo_sdio_disable_eirq */
+ }
+ } else {
+ ERR_MSG("XXX "); /* so never enter here */
+ tmp = sdr_read32(SDC_CFG);
+ /* FIXME. Need to interrupt gap detection */
+ if (enable) {
+ tmp |= (SDC_CFG_SDIOIDE | SDC_CFG_SDIOINTWKUP);
+ } else {
+ tmp &= ~(SDC_CFG_SDIOIDE | SDC_CFG_SDIOINTWKUP);
+ }
+ sdr_write32(SDC_CFG, tmp);
+ }
+}
+
+static struct mmc_host_ops mt_msdc_ops = {
+ .request = msdc_ops_request,
+ .set_ios = msdc_ops_set_ios,
+ .get_ro = msdc_ops_get_ro,
+ .get_cd = msdc_ops_get_cd,
+ .enable_sdio_irq = msdc_ops_enable_sdio_irq,
+};
+
+/*--------------------------------------------------------------------------*/
+/* interrupt handler */
+/*--------------------------------------------------------------------------*/
+static irqreturn_t msdc_irq(int irq, void *dev_id)
+{
+ struct msdc_host *host = (struct msdc_host *)dev_id;
+ struct mmc_data *data = host->data;
+ struct mmc_command *cmd = host->cmd;
+ u32 base = host->base;
+
+ u32 cmdsts = MSDC_INT_RSPCRCERR | MSDC_INT_CMDTMO | MSDC_INT_CMDRDY |
+ MSDC_INT_ACMDCRCERR | MSDC_INT_ACMDTMO | MSDC_INT_ACMDRDY |
+ MSDC_INT_ACMD19_DONE;
+ u32 datsts = MSDC_INT_DATCRCERR |MSDC_INT_DATTMO;
+
+ u32 intsts = sdr_read32(MSDC_INT);
+ u32 inten = sdr_read32(MSDC_INTEN); inten &= intsts;
+
+ sdr_write32(MSDC_INT, intsts); /* clear interrupts */
+ /* MSG will cause fatal error */
+
+ /* card change interrupt */
+ if (intsts & MSDC_INT_CDSC){
+ if (mtk_sw_poll)
+ return IRQ_HANDLED;
+ IRQ_MSG("MSDC_INT_CDSC irq<0x%.8x>", intsts);
+#if 0 /* ---/+++ by chhung: fix slot mechanical bounce issue */
+ tasklet_hi_schedule(&host->card_tasklet);
+#else
+ schedule_delayed_work(&host->card_delaywork, HZ);
+#endif
+ /* tuning when plug card ? */
+ }
+
+ /* sdio interrupt */
+ if (intsts & MSDC_INT_SDIOIRQ){
+ IRQ_MSG("XXX MSDC_INT_SDIOIRQ"); /* seems not sdio irq */
+ //mmc_signal_sdio_irq(host->mmc);
+ }
+
+ /* transfer complete interrupt */
+ if (data != NULL) {
+ if (inten & MSDC_INT_XFER_COMPL) {
+ data->bytes_xfered = host->dma.xfersz;
+ complete(&host->xfer_done);
+ }
+
+ if (intsts & datsts) {
+ /* do basic reset, or stop command will sdc_busy */
+ msdc_reset();
+ msdc_clr_fifo();
+ msdc_clr_int();
+ atomic_set(&host->abort, 1); /* For PIO mode exit */
+
+ if (intsts & MSDC_INT_DATTMO){
+ IRQ_MSG("XXX CMD<%d> MSDC_INT_DATTMO", host->mrq->cmd->opcode);
+ data->error = (unsigned int)-ETIMEDOUT;
+ }
+ else if (intsts & MSDC_INT_DATCRCERR){
+ IRQ_MSG("XXX CMD<%d> MSDC_INT_DATCRCERR, SDC_DCRC_STS<0x%x>", host->mrq->cmd->opcode, sdr_read32(SDC_DCRC_STS));
+ data->error = (unsigned int)-EIO;
+ }
+
+ //if(sdr_read32(MSDC_INTEN) & MSDC_INT_XFER_COMPL) {
+ if (host->dma_xfer) {
+ complete(&host->xfer_done); /* Read CRC come fast, XFER_COMPL not enabled */
+ } /* PIO mode can't do complete, because not init */
+ }
+ }
+
+ /* command interrupts */
+ if ((cmd != NULL) && (intsts & cmdsts)) {
+ if ((intsts & MSDC_INT_CMDRDY) || (intsts & MSDC_INT_ACMDRDY) ||
+ (intsts & MSDC_INT_ACMD19_DONE)) {
+ u32 *rsp = &cmd->resp[0];
+
+ switch (host->cmd_rsp) {
+ case RESP_NONE:
+ break;
+ case RESP_R2:
+ *rsp++ = sdr_read32(SDC_RESP3); *rsp++ = sdr_read32(SDC_RESP2);
+ *rsp++ = sdr_read32(SDC_RESP1); *rsp++ = sdr_read32(SDC_RESP0);
+ break;
+ default: /* Response types 1, 3, 4, 5, 6, 7(1b) */
+ if ((intsts & MSDC_INT_ACMDRDY) || (intsts & MSDC_INT_ACMD19_DONE)) {
+ *rsp = sdr_read32(SDC_ACMD_RESP);
+ } else {
+ *rsp = sdr_read32(SDC_RESP0);
+ }
+ break;
+ }
+ } else if ((intsts & MSDC_INT_RSPCRCERR) || (intsts & MSDC_INT_ACMDCRCERR)) {
+ if(intsts & MSDC_INT_ACMDCRCERR){
+ IRQ_MSG("XXX CMD<%d> MSDC_INT_ACMDCRCERR",cmd->opcode);
+ }
+ else {
+ IRQ_MSG("XXX CMD<%d> MSDC_INT_RSPCRCERR",cmd->opcode);
+ }
+ cmd->error = (unsigned int)-EIO;
+ } else if ((intsts & MSDC_INT_CMDTMO) || (intsts & MSDC_INT_ACMDTMO)) {
+ if(intsts & MSDC_INT_ACMDTMO){
+ IRQ_MSG("XXX CMD<%d> MSDC_INT_ACMDTMO",cmd->opcode);
+ }
+ else {
+ IRQ_MSG("XXX CMD<%d> MSDC_INT_CMDTMO",cmd->opcode);
+ }
+ cmd->error = (unsigned int)-ETIMEDOUT;
+ msdc_reset();
+ msdc_clr_fifo();
+ msdc_clr_int();
+ }
+ complete(&host->cmd_done);
+ }
+
+ /* mmc irq interrupts */
+ if (intsts & MSDC_INT_MMCIRQ) {
+ printk(KERN_INFO "msdc[%d] MMCIRQ: SDC_CSTS=0x%.8x\r\n", host->id, sdr_read32(SDC_CSTS));
+ }
+
+#ifdef MT6575_SD_DEBUG
+ {
+ msdc_int_reg *int_reg = (msdc_int_reg*)&intsts;
+ N_MSG(INT, "IRQ_EVT(0x%x): MMCIRQ(%d) CDSC(%d), ACRDY(%d), ACTMO(%d), ACCRE(%d) AC19DN(%d)",
+ intsts,
+ int_reg->mmcirq,
+ int_reg->cdsc,
+ int_reg->atocmdrdy,
+ int_reg->atocmdtmo,
+ int_reg->atocmdcrc,
+ int_reg->atocmd19done);
+ N_MSG(INT, "IRQ_EVT(0x%x): SDIO(%d) CMDRDY(%d), CMDTMO(%d), RSPCRC(%d), CSTA(%d)",
+ intsts,
+ int_reg->sdioirq,
+ int_reg->cmdrdy,
+ int_reg->cmdtmo,
+ int_reg->rspcrc,
+ int_reg->csta);
+ N_MSG(INT, "IRQ_EVT(0x%x): XFCMP(%d) DXDONE(%d), DATTMO(%d), DATCRC(%d), DMAEMP(%d)",
+ intsts,
+ int_reg->xfercomp,
+ int_reg->dxferdone,
+ int_reg->dattmo,
+ int_reg->datcrc,
+ int_reg->dmaqempty);
+
+ }
+#endif
+
+ return IRQ_HANDLED;
+}
+
+/*--------------------------------------------------------------------------*/
+/* platform_driver members */
+/*--------------------------------------------------------------------------*/
+/* called by msdc_drv_probe/remove */
+static void msdc_enable_cd_irq(struct msdc_host *host, int enable)
+{
+ struct msdc_hw *hw = host->hw;
+ u32 base = host->base;
+
+ /* for sdio, not set */
+ if ((hw->flags & MSDC_CD_PIN_EN) == 0) {
+ /* Pull down card detection pin since it is not avaiable */
+ /*
+ if (hw->config_gpio_pin)
+ hw->config_gpio_pin(MSDC_CD_PIN, GPIO_PULL_DOWN);
+ */
+ sdr_clr_bits(MSDC_PS, MSDC_PS_CDEN);
+ sdr_clr_bits(MSDC_INTEN, MSDC_INTEN_CDSC);
+ sdr_clr_bits(SDC_CFG, SDC_CFG_INSWKUP);
+ return;
+ }
+
+ N_MSG(CFG, "CD IRQ Eanable(%d)", enable);
+
+ if (enable) {
+ if (hw->enable_cd_eirq) { /* not set, never enter */
+ hw->enable_cd_eirq();
+ } else {
+ /* card detection circuit relies on the core power so that the core power
+ * shouldn't be turned off. Here adds a reference count to keep
+ * the core power alive.
+ */
+ //msdc_vcore_on(host); //did in msdc_init_hw()
+
+ if (hw->config_gpio_pin) /* NULL */
+ hw->config_gpio_pin(MSDC_CD_PIN, GPIO_PULL_UP);
+
+ sdr_set_field(MSDC_PS, MSDC_PS_CDDEBOUNCE, DEFAULT_DEBOUNCE);
+ sdr_set_bits(MSDC_PS, MSDC_PS_CDEN);
+ sdr_set_bits(MSDC_INTEN, MSDC_INTEN_CDSC);
+ sdr_set_bits(SDC_CFG, SDC_CFG_INSWKUP); /* not in document! Fix me */
+ }
+ } else {
+ if (hw->disable_cd_eirq) {
+ hw->disable_cd_eirq();
+ } else {
+ if (hw->config_gpio_pin) /* NULL */
+ hw->config_gpio_pin(MSDC_CD_PIN, GPIO_PULL_DOWN);
+
+ sdr_clr_bits(SDC_CFG, SDC_CFG_INSWKUP);
+ sdr_clr_bits(MSDC_PS, MSDC_PS_CDEN);
+ sdr_clr_bits(MSDC_INTEN, MSDC_INTEN_CDSC);
+
+ /* Here decreases a reference count to core power since card
+ * detection circuit is shutdown.
+ */
+ //msdc_vcore_off(host);
+ }
+ }
+}
+
+/* called by msdc_drv_probe */
+static void msdc_init_hw(struct msdc_host *host)
+{
+ u32 base = host->base;
+ struct msdc_hw *hw = host->hw;
+
+ /* Power on */
+#if 0 /* --- by chhung */
+ msdc_vcore_on(host);
+ msdc_pin_reset(host, MSDC_PIN_PULL_UP);
+ msdc_select_clksrc(host, hw->clk_src);
+ enable_clock(PERI_MSDC0_PDN + host->id, "SD");
+ msdc_vdd_on(host);
+#endif /* end of --- */
+ /* Configure to MMC/SD mode */
+ sdr_set_field(MSDC_CFG, MSDC_CFG_MODE, MSDC_SDMMC);
+
+ /* Reset */
+ msdc_reset();
+ msdc_clr_fifo();
+
+ /* Disable card detection */
+ sdr_clr_bits(MSDC_PS, MSDC_PS_CDEN);
+
+ /* Disable and clear all interrupts */
+ sdr_clr_bits(MSDC_INTEN, sdr_read32(MSDC_INTEN));
+ sdr_write32(MSDC_INT, sdr_read32(MSDC_INT));
+
+#if 1
+ /* reset tuning parameter */
+ sdr_write32(MSDC_PAD_CTL0, 0x00090000);
+ sdr_write32(MSDC_PAD_CTL1, 0x000A0000);
+ sdr_write32(MSDC_PAD_CTL2, 0x000A0000);
+ // sdr_write32(MSDC_PAD_TUNE, 0x00000000);
+ sdr_write32(MSDC_PAD_TUNE, 0x84101010); // for MT7620 E2 and afterward
+ // sdr_write32(MSDC_DAT_RDDLY0, 0x00000000);
+ sdr_write32(MSDC_DAT_RDDLY0, 0x10101010); // for MT7620 E2 and afterward
+ sdr_write32(MSDC_DAT_RDDLY1, 0x00000000);
+ sdr_write32(MSDC_IOCON, 0x00000000);
+#if 0 // use MT7620 default value: 0x403c004f
+ sdr_write32(MSDC_PATCH_BIT0, 0x003C000F); /* bit0 modified: Rx Data Clock Source: 1 -> 2.0*/
+#endif
+
+ if (sdr_read32(MSDC_ECO_VER) >= 4) {
+ if (host->id == 1) {
+ sdr_set_field(MSDC_PATCH_BIT1, MSDC_PATCH_BIT1_WRDAT_CRCS, 1);
+ sdr_set_field(MSDC_PATCH_BIT1, MSDC_PATCH_BIT1_CMD_RSP, 1);
+
+ /* internal clock: latch read data */
+ sdr_set_bits(MSDC_PATCH_BIT0, MSDC_PATCH_BIT_CKGEN_CK);
+ }
+ }
+#endif
+
+ /* for safety, should clear SDC_CFG.SDIO_INT_DET_EN & set SDC_CFG.SDIO in
+ pre-loader,uboot,kernel drivers. and SDC_CFG.SDIO_INT_DET_EN will be only
+ set when kernel driver wants to use SDIO bus interrupt */
+ /* Configure to enable SDIO mode. it's must otherwise sdio cmd5 failed */
+ sdr_set_bits(SDC_CFG, SDC_CFG_SDIO);
+
+ /* disable detect SDIO device interupt function */
+ sdr_clr_bits(SDC_CFG, SDC_CFG_SDIOIDE);
+
+ /* eneable SMT for glitch filter */
+ sdr_set_bits(MSDC_PAD_CTL0, MSDC_PAD_CTL0_CLKSMT);
+ sdr_set_bits(MSDC_PAD_CTL1, MSDC_PAD_CTL1_CMDSMT);
+ sdr_set_bits(MSDC_PAD_CTL2, MSDC_PAD_CTL2_DATSMT);
+
+#if 1
+ /* set clk, cmd, dat pad driving */
+ sdr_set_field(MSDC_PAD_CTL0, MSDC_PAD_CTL0_CLKDRVN, hw->clk_drv);
+ sdr_set_field(MSDC_PAD_CTL0, MSDC_PAD_CTL0_CLKDRVP, hw->clk_drv);
+ sdr_set_field(MSDC_PAD_CTL1, MSDC_PAD_CTL1_CMDDRVN, hw->cmd_drv);
+ sdr_set_field(MSDC_PAD_CTL1, MSDC_PAD_CTL1_CMDDRVP, hw->cmd_drv);
+ sdr_set_field(MSDC_PAD_CTL2, MSDC_PAD_CTL2_DATDRVN, hw->dat_drv);
+ sdr_set_field(MSDC_PAD_CTL2, MSDC_PAD_CTL2_DATDRVP, hw->dat_drv);
+#else
+ sdr_set_field(MSDC_PAD_CTL0, MSDC_PAD_CTL0_CLKDRVN, 0);
+ sdr_set_field(MSDC_PAD_CTL0, MSDC_PAD_CTL0_CLKDRVP, 0);
+ sdr_set_field(MSDC_PAD_CTL1, MSDC_PAD_CTL1_CMDDRVN, 0);
+ sdr_set_field(MSDC_PAD_CTL1, MSDC_PAD_CTL1_CMDDRVP, 0);
+ sdr_set_field(MSDC_PAD_CTL2, MSDC_PAD_CTL2_DATDRVN, 0);
+ sdr_set_field(MSDC_PAD_CTL2, MSDC_PAD_CTL2_DATDRVP, 0);
+#endif
+
+ /* set sampling edge */
+
+ /* write crc timeout detection */
+ sdr_set_field(MSDC_PATCH_BIT0, 1 << 30, 1);
+
+ /* Configure to default data timeout */
+ sdr_set_field(SDC_CFG, SDC_CFG_DTOC, DEFAULT_DTOC);
+
+ msdc_set_buswidth(host, MMC_BUS_WIDTH_1);
+
+ N_MSG(FUC, "init hardware done!");
+}
+
+/* called by msdc_drv_remove */
+static void msdc_deinit_hw(struct msdc_host *host)
+{
+ u32 base = host->base;
+
+ /* Disable and clear all interrupts */
+ sdr_clr_bits(MSDC_INTEN, sdr_read32(MSDC_INTEN));
+ sdr_write32(MSDC_INT, sdr_read32(MSDC_INT));
+
+ /* Disable card detection */
+ msdc_enable_cd_irq(host, 0);
+ // msdc_set_power_mode(host, MMC_POWER_OFF); /* make sure power down */ /* --- by chhung */
+}
+
+/* init gpd and bd list in msdc_drv_probe */
+static void msdc_init_gpd_bd(struct msdc_host *host, struct msdc_dma *dma)
+{
+ gpd_t *gpd = dma->gpd;
+ bd_t *bd = dma->bd;
+ bd_t *ptr, *prev;
+
+ /* we just support one gpd */
+ int bdlen = MAX_BD_PER_GPD;
+
+ /* init the 2 gpd */
+ memset(gpd, 0, sizeof(gpd_t) * 2);
+ //gpd->next = (void *)virt_to_phys(gpd + 1); /* pointer to a null gpd, bug! kmalloc <-> virt_to_phys */
+ //gpd->next = (dma->gpd_addr + 1); /* bug */
+ gpd->next = (void *)((u32)dma->gpd_addr + sizeof(gpd_t));
+
+ //gpd->intr = 0;
+ gpd->bdp = 1; /* hwo, cs, bd pointer */
+ //gpd->ptr = (void*)virt_to_phys(bd);
+ gpd->ptr = (void *)dma->bd_addr; /* physical address */
+
+ memset(bd, 0, sizeof(bd_t) * bdlen);
+ ptr = bd + bdlen - 1;
+ //ptr->eol = 1; /* 0 or 1 [Fix me]*/
+ //ptr->next = 0;
+
+ while (ptr != bd) {
+ prev = ptr - 1;
+ prev->next = (void *)(dma->bd_addr + sizeof(bd_t) *(ptr - bd));
+ ptr = prev;
+ }
+}
+
+static int msdc_drv_probe(struct platform_device *pdev)
+{
+ struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ __iomem void *base;
+ struct mmc_host *mmc;
+ struct resource *mem;
+ struct msdc_host *host;
+ struct msdc_hw *hw;
+ int ret, irq;
+
+ pdev->dev.platform_data = &msdc0_hw;
+
+ if (of_property_read_bool(pdev->dev.of_node, "mtk,wp-en"))
+ msdc0_hw.flags |= MSDC_WP_PIN_EN;
+
+ /* Allocate MMC host for this device */
+ mmc = mmc_alloc_host(sizeof(struct msdc_host), &pdev->dev);
+ if (!mmc) return -ENOMEM;
+
+ hw = (struct msdc_hw*)pdev->dev.platform_data;
+ mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ irq = platform_get_irq(pdev, 0);
+
+ //BUG_ON((!hw) || (!mem) || (irq < 0)); /* --- by chhung */
+
+ base = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(base))
+ return PTR_ERR(base);
+
+ /* Set host parameters to mmc */
+ mmc->ops = &mt_msdc_ops;
+ mmc->f_min = HOST_MIN_MCLK;
+ mmc->f_max = HOST_MAX_MCLK;
+ mmc->ocr_avail = MSDC_OCR_AVAIL;
+
+ /* For sd card: MSDC_SYS_SUSPEND | MSDC_WP_PIN_EN | MSDC_CD_PIN_EN | MSDC_REMOVABLE | MSDC_HIGHSPEED,
+ For sdio : MSDC_EXT_SDIO_IRQ | MSDC_HIGHSPEED */
+ if (hw->flags & MSDC_HIGHSPEED) {
+ mmc->caps = MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED;
+ }
+ if (hw->data_pins == 4) { /* current data_pins are all 4*/
+ mmc->caps |= MMC_CAP_4_BIT_DATA;
+ } else if (hw->data_pins == 8) {
+ mmc->caps |= MMC_CAP_8_BIT_DATA;
+ }
+ if ((hw->flags & MSDC_SDIO_IRQ) || (hw->flags & MSDC_EXT_SDIO_IRQ))
+ mmc->caps |= MMC_CAP_SDIO_IRQ; /* yes for sdio */
+
+ cd_active_low = !of_property_read_bool(pdev->dev.of_node, "mediatek,cd-high");
+ mtk_sw_poll = of_property_read_bool(pdev->dev.of_node, "mediatek,cd-poll");
+
+ if (mtk_sw_poll)
+ mmc->caps |= MMC_CAP_NEEDS_POLL;
+
+ /* MMC core transfer sizes tunable parameters */
+#if LINUX_VERSION_CODE > KERNEL_VERSION(3,10,0)
+ mmc->max_segs = MAX_HW_SGMTS;
+#else
+ mmc->max_hw_segs = MAX_HW_SGMTS;
+ mmc->max_phys_segs = MAX_PHY_SGMTS;
+#endif
+ mmc->max_seg_size = MAX_SGMT_SZ;
+ mmc->max_blk_size = HOST_MAX_BLKSZ;
+ mmc->max_req_size = MAX_REQ_SZ;
+ mmc->max_blk_count = mmc->max_req_size;
+
+ host = mmc_priv(mmc);
+ host->hw = hw;
+ host->mmc = mmc;
+ BUG_ON(pdev->id < -1);
+ BUG_ON(pdev->id >= ARRAY_SIZE(drv_mode));
+ host->id = (pdev->id == -1) ? 0 : pdev->id;
+ host->error = 0;
+ host->irq = irq;
+ host->base = (unsigned long) base;
+ host->mclk = 0; /* mclk: the request clock of mmc sub-system */
+ host->hclk = hclks[hw->clk_src]; /* hclk: clock of clock source to msdc controller */
+ host->sclk = 0; /* sclk: the really clock after divition */
+ host->pm_state = PMSG_RESUME;
+ host->suspend = 0;
+ host->core_clkon = 0;
+ host->card_clkon = 0;
+ host->core_power = 0;
+ host->power_mode = MMC_POWER_OFF;
+// host->card_inserted = hw->flags & MSDC_REMOVABLE ? 0 : 1;
+ host->timeout_ns = 0;
+ host->timeout_clks = DEFAULT_DTOC * 65536;
+
+ host->mrq = NULL;
+ //init_MUTEX(&host->sem); /* we don't need to support multiple threads access */
+
+ host->dma.used_gpd = 0;
+ host->dma.used_bd = 0;
+
+ /* using dma_alloc_coherent*/ /* todo: using 1, for all 4 slots */
+ host->dma.gpd = dma_alloc_coherent(NULL, MAX_GPD_NUM * sizeof(gpd_t), &host->dma.gpd_addr, GFP_KERNEL);
+ host->dma.bd = dma_alloc_coherent(NULL, MAX_BD_NUM * sizeof(bd_t), &host->dma.bd_addr, GFP_KERNEL);
+ BUG_ON((!host->dma.gpd) || (!host->dma.bd));
+ msdc_init_gpd_bd(host, &host->dma);
+
+#if 0
+ tasklet_init(&host->card_tasklet, msdc_tasklet_card, (ulong)host);
+#else
+ INIT_DELAYED_WORK(&host->card_delaywork, msdc_tasklet_card);
+#endif
+ spin_lock_init(&host->lock);
+ msdc_init_hw(host);
+
+ if (ralink_soc == MT762X_SOC_MT7621AT)
+ ret = request_irq((unsigned int)irq, msdc_irq, 0, dev_name(&pdev->dev), host);
+ else
+ ret = request_irq((unsigned int)irq, msdc_irq, IRQF_TRIGGER_LOW, dev_name(&pdev->dev), host);
+
+ if (ret) goto release;
+ // mt65xx_irq_unmask(irq); /* --- by chhung */
+
+ if (hw->flags & MSDC_CD_PIN_EN) { /* not set for sdio */
+ if (hw->request_cd_eirq) { /* not set for MT6575 */
+ hw->request_cd_eirq(msdc_eirq_cd, (void*)host); /* msdc_eirq_cd will not be used! */
+ }
+ }
+
+ if (hw->request_sdio_eirq) /* set to combo_sdio_request_eirq() for WIFI */
+ hw->request_sdio_eirq(msdc_eirq_sdio, (void*)host); /* msdc_eirq_sdio() will be called when EIRQ */
+
+ if (hw->register_pm) {/* yes for sdio */
+#ifdef CONFIG_PM
+ hw->register_pm(msdc_pm, (void*)host); /* combo_sdio_register_pm() */
+#endif
+ if(hw->flags & MSDC_SYS_SUSPEND) { /* will not set for WIFI */
+ ERR_MSG("MSDC_SYS_SUSPEND and register_pm both set");
+ }
+ //mmc->pm_flags |= MMC_PM_IGNORE_PM_NOTIFY; /* pm not controlled by system but by client. */ /* --- by chhung */
+ }
+
+ platform_set_drvdata(pdev, mmc);
+
+ ret = mmc_add_host(mmc);
+ if (ret) goto free_irq;
+
+ /* Config card detection pin and enable interrupts */
+ if (hw->flags & MSDC_CD_PIN_EN) { /* set for card */
+ msdc_enable_cd_irq(host, 1);
+ } else {
+ msdc_enable_cd_irq(host, 0);
+ }
+
+ return 0;
+
+free_irq:
+ free_irq(irq, host);
+release:
+ platform_set_drvdata(pdev, NULL);
+ msdc_deinit_hw(host);
+
+#if 0
+ tasklet_kill(&host->card_tasklet);
+#else
+ cancel_delayed_work_sync(&host->card_delaywork);
+#endif
+
+ if (mem)
+ release_mem_region(mem->start, mem->end - mem->start + 1);
+
+ mmc_free_host(mmc);
+
+ return ret;
+}
+
+/* 4 device share one driver, using "drvdata" to show difference */
+static int msdc_drv_remove(struct platform_device *pdev)
+{
+ struct mmc_host *mmc;
+ struct msdc_host *host;
+ struct resource *mem;
+
+ mmc = platform_get_drvdata(pdev);
+ BUG_ON(!mmc);
+
+ host = mmc_priv(mmc);
+ BUG_ON(!host);
+
+ ERR_MSG("removed !!!");
+
+ platform_set_drvdata(pdev, NULL);
+ mmc_remove_host(host->mmc);
+ msdc_deinit_hw(host);
+
+#if 0
+ tasklet_kill(&host->card_tasklet);
+#else
+ cancel_delayed_work_sync(&host->card_delaywork);
+#endif
+ free_irq(host->irq, host);
+
+ dma_free_coherent(NULL, MAX_GPD_NUM * sizeof(gpd_t), host->dma.gpd, host->dma.gpd_addr);
+ dma_free_coherent(NULL, MAX_BD_NUM * sizeof(bd_t), host->dma.bd, host->dma.bd_addr);
+
+ mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+
+ if (mem)
+ release_mem_region(mem->start, mem->end - mem->start + 1);
+
+ mmc_free_host(host->mmc);
+
+ return 0;
+}
+
+/* Fix me: Power Flow */
+#ifdef CONFIG_PM
+static int msdc_drv_suspend(struct platform_device *pdev, pm_message_t state)
+{
+ int ret = 0;
+ struct mmc_host *mmc = platform_get_drvdata(pdev);
+ struct msdc_host *host = mmc_priv(mmc);
+
+ if (mmc && state.event == PM_EVENT_SUSPEND && (host->hw->flags & MSDC_SYS_SUSPEND)) { /* will set for card */
+ msdc_pm(state, (void*)host);
+ }
+
+ return ret;
+}
+
+static int msdc_drv_resume(struct platform_device *pdev)
+{
+ int ret = 0;
+ struct mmc_host *mmc = platform_get_drvdata(pdev);
+ struct msdc_host *host = mmc_priv(mmc);
+ struct pm_message state;
+
+ state.event = PM_EVENT_RESUME;
+ if (mmc && (host->hw->flags & MSDC_SYS_SUSPEND)) {/* will set for card */
+ msdc_pm(state, (void*)host);
+ }
+
+ /* This mean WIFI not controller by PM */
+
+ return ret;
+}
+#endif
+
+static const struct of_device_id mt7620_sdhci_match[] = {
+ { .compatible = "ralink,mt7620-sdhci" },
+ {},
+};
+MODULE_DEVICE_TABLE(of, mt7620_sdhci_match);
+
+static struct platform_driver mt_msdc_driver = {
+ .probe = msdc_drv_probe,
+ .remove = msdc_drv_remove,
+#ifdef CONFIG_PM
+ .suspend = msdc_drv_suspend,
+ .resume = msdc_drv_resume,
+#endif
+ .driver = {
+ .name = DRV_NAME,
+ .of_match_table = mt7620_sdhci_match,
+ },
+};
+
+/*--------------------------------------------------------------------------*/
+/* module init/exit */
+/*--------------------------------------------------------------------------*/
+static int __init mt_msdc_init(void)
+{
+ int ret;
+/* +++ by chhung */
+ u32 reg;
+
+#if defined (CONFIG_MTD_ANY_RALINK)
+ extern int ra_check_flash_type(void);
+ if(ra_check_flash_type() == 2) { /* NAND */
+ printk("%s: !!!!! SDXC Module Initialize Fail !!!!!", __func__);
+ return 0;
+ }
+#endif
+ printk("MTK MSDC device init.\n");
+ mtk_sd_device.dev.platform_data = &msdc0_hw;
+if (ralink_soc == MT762X_SOC_MT7620A || ralink_soc == MT762X_SOC_MT7621AT) {
+//#if defined (CONFIG_RALINK_MT7620) || defined (CONFIG_RALINK_MT7621)
+ reg = sdr_read32((volatile u32*)(RALINK_SYSCTL_BASE + 0x60)) & ~(0x3<<18);
+//#if defined (CONFIG_RALINK_MT7620)
+ if (ralink_soc == MT762X_SOC_MT7620A)
+ reg |= 0x1<<18;
+//#endif
+} else {
+//#elif defined (CONFIG_RALINK_MT7628)
+ /* TODO: maybe omitted when RAether already toggle AGPIO_CFG */
+ reg = sdr_read32((volatile u32*)(RALINK_SYSCTL_BASE + 0x3c));
+ reg |= 0x1e << 16;
+ sdr_write32((volatile u32*)(RALINK_SYSCTL_BASE + 0x3c), reg);
+
+ reg = sdr_read32((volatile u32*)(RALINK_SYSCTL_BASE + 0x60)) & ~(0x3<<10);
+#if defined (CONFIG_MTK_MMC_EMMC_8BIT)
+ reg |= 0x3<<26 | 0x3<<28 | 0x3<<30;
+ msdc0_hw.data_pins = 8,
+#endif
+//#endif
+}
+ sdr_write32((volatile u32*)(RALINK_SYSCTL_BASE + 0x60), reg);
+ //platform_device_register(&mtk_sd_device);
+/* end of +++ */
+
+ ret = platform_driver_register(&mt_msdc_driver);
+ if (ret) {
+ printk(KERN_ERR DRV_NAME ": Can't register driver");
+ return ret;
+ }
+ printk(KERN_INFO DRV_NAME ": MediaTek MT6575 MSDC Driver\n");
+
+#if defined (MT6575_SD_DEBUG)
+ msdc_debug_proc_init();
+#endif
+ return 0;
+}
+
+static void __exit mt_msdc_exit(void)
+{
+// platform_device_unregister(&mtk_sd_device);
+ platform_driver_unregister(&mt_msdc_driver);
+}
+
+module_init(mt_msdc_init);
+module_exit(mt_msdc_exit);
+MODULE_LICENSE("GPL");
projects / openwrt / openwrt.git / blobdiff