+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0
-/*
- * drivers/mmc/sh_sdhi.c
- *
- * SD/MMC driver for Renesas rmobile ARM SoCs.
- *
- * Copyright (C) 2011,2013-2017 Renesas Electronics Corporation
- * Copyright (C) 2014 Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
- * Copyright (C) 2008-2009 Renesas Solutions Corp.
- */
-
-#include <common.h>
-#include <log.h>
-#include <malloc.h>
-#include <mmc.h>
-#include <dm.h>
-#include <part.h>
-#include <dm/device_compat.h>
-#include <linux/bitops.h>
-#include <linux/delay.h>
-#include <linux/errno.h>
-#include <linux/compat.h>
-#include <linux/io.h>
-#include <linux/sizes.h>
-#include <asm/arch/rmobile.h>
-#include <asm/arch/sh_sdhi.h>
-#include <asm/global_data.h>
-#include <clk.h>
-
-#define DRIVER_NAME "sh-sdhi"
-
-struct sh_sdhi_host {
- void __iomem *addr;
- int ch;
- int bus_shift;
- unsigned long quirks;
- unsigned char wait_int;
- unsigned char sd_error;
- unsigned char detect_waiting;
- unsigned char app_cmd;
-};
-
-static inline void sh_sdhi_writeq(struct sh_sdhi_host *host, int reg, u64 val)
-{
- writeq(val, host->addr + (reg << host->bus_shift));
-}
-
-static inline u64 sh_sdhi_readq(struct sh_sdhi_host *host, int reg)
-{
- return readq(host->addr + (reg << host->bus_shift));
-}
-
-static inline void sh_sdhi_writew(struct sh_sdhi_host *host, int reg, u16 val)
-{
- writew(val, host->addr + (reg << host->bus_shift));
-}
-
-static inline u16 sh_sdhi_readw(struct sh_sdhi_host *host, int reg)
-{
- return readw(host->addr + (reg << host->bus_shift));
-}
-
-static void sh_sdhi_detect(struct sh_sdhi_host *host)
-{
- sh_sdhi_writew(host, SDHI_OPTION,
- OPT_BUS_WIDTH_1 | sh_sdhi_readw(host, SDHI_OPTION));
-
- host->detect_waiting = 0;
-}
-
-static int sh_sdhi_intr(void *dev_id)
-{
- struct sh_sdhi_host *host = dev_id;
- int state1 = 0, state2 = 0;
-
- state1 = sh_sdhi_readw(host, SDHI_INFO1);
- state2 = sh_sdhi_readw(host, SDHI_INFO2);
-
- debug("%s: state1 = %x, state2 = %x\n", __func__, state1, state2);
-
- /* CARD Insert */
- if (state1 & INFO1_CARD_IN) {
- sh_sdhi_writew(host, SDHI_INFO1, ~INFO1_CARD_IN);
- if (!host->detect_waiting) {
- host->detect_waiting = 1;
- sh_sdhi_detect(host);
- }
- sh_sdhi_writew(host, SDHI_INFO1_MASK, INFO1M_RESP_END |
- INFO1M_ACCESS_END | INFO1M_CARD_IN |
- INFO1M_DATA3_CARD_RE | INFO1M_DATA3_CARD_IN);
- return -EAGAIN;
- }
- /* CARD Removal */
- if (state1 & INFO1_CARD_RE) {
- sh_sdhi_writew(host, SDHI_INFO1, ~INFO1_CARD_RE);
- if (!host->detect_waiting) {
- host->detect_waiting = 1;
- sh_sdhi_detect(host);
- }
- sh_sdhi_writew(host, SDHI_INFO1_MASK, INFO1M_RESP_END |
- INFO1M_ACCESS_END | INFO1M_CARD_RE |
- INFO1M_DATA3_CARD_RE | INFO1M_DATA3_CARD_IN);
- sh_sdhi_writew(host, SDHI_SDIO_INFO1_MASK, SDIO_INFO1M_ON);
- sh_sdhi_writew(host, SDHI_SDIO_MODE, SDIO_MODE_OFF);
- return -EAGAIN;
- }
-
- if (state2 & INFO2_ALL_ERR) {
- sh_sdhi_writew(host, SDHI_INFO2,
- (unsigned short)~(INFO2_ALL_ERR));
- sh_sdhi_writew(host, SDHI_INFO2_MASK,
- INFO2M_ALL_ERR |
- sh_sdhi_readw(host, SDHI_INFO2_MASK));
- host->sd_error = 1;
- host->wait_int = 1;
- return 0;
- }
- /* Respons End */
- if (state1 & INFO1_RESP_END) {
- sh_sdhi_writew(host, SDHI_INFO1, ~INFO1_RESP_END);
- sh_sdhi_writew(host, SDHI_INFO1_MASK,
- INFO1M_RESP_END |
- sh_sdhi_readw(host, SDHI_INFO1_MASK));
- host->wait_int = 1;
- return 0;
- }
- /* SD_BUF Read Enable */
- if (state2 & INFO2_BRE_ENABLE) {
- sh_sdhi_writew(host, SDHI_INFO2, ~INFO2_BRE_ENABLE);
- sh_sdhi_writew(host, SDHI_INFO2_MASK,
- INFO2M_BRE_ENABLE | INFO2M_BUF_ILL_READ |
- sh_sdhi_readw(host, SDHI_INFO2_MASK));
- host->wait_int = 1;
- return 0;
- }
- /* SD_BUF Write Enable */
- if (state2 & INFO2_BWE_ENABLE) {
- sh_sdhi_writew(host, SDHI_INFO2, ~INFO2_BWE_ENABLE);
- sh_sdhi_writew(host, SDHI_INFO2_MASK,
- INFO2_BWE_ENABLE | INFO2M_BUF_ILL_WRITE |
- sh_sdhi_readw(host, SDHI_INFO2_MASK));
- host->wait_int = 1;
- return 0;
- }
- /* Access End */
- if (state1 & INFO1_ACCESS_END) {
- sh_sdhi_writew(host, SDHI_INFO1, ~INFO1_ACCESS_END);
- sh_sdhi_writew(host, SDHI_INFO1_MASK,
- INFO1_ACCESS_END |
- sh_sdhi_readw(host, SDHI_INFO1_MASK));
- host->wait_int = 1;
- return 0;
- }
- return -EAGAIN;
-}
-
-static int sh_sdhi_wait_interrupt_flag(struct sh_sdhi_host *host)
-{
- int timeout = 10000000;
-
- while (1) {
- timeout--;
- if (timeout < 0) {
- debug(DRIVER_NAME": %s timeout\n", __func__);
- return 0;
- }
-
- if (!sh_sdhi_intr(host))
- break;
-
- udelay(1); /* 1 usec */
- }
-
- return 1; /* Return value: NOT 0 = complete waiting */
-}
-
-static int sh_sdhi_clock_control(struct sh_sdhi_host *host, unsigned long clk)
-{
- u32 clkdiv, i, timeout;
-
- if (sh_sdhi_readw(host, SDHI_INFO2) & (1 << 14)) {
- printf(DRIVER_NAME": Busy state ! Cannot change the clock\n");
- return -EBUSY;
- }
-
- sh_sdhi_writew(host, SDHI_CLK_CTRL,
- ~CLK_ENABLE & sh_sdhi_readw(host, SDHI_CLK_CTRL));
-
- if (clk == 0)
- return -EIO;
-
- clkdiv = 0x80;
- i = CONFIG_SH_SDHI_FREQ >> (0x8 + 1);
- for (; clkdiv && clk >= (i << 1); (clkdiv >>= 1))
- i <<= 1;
-
- sh_sdhi_writew(host, SDHI_CLK_CTRL, clkdiv);
-
- timeout = 100000;
- /* Waiting for SD Bus busy to be cleared */
- while (timeout--) {
- if ((sh_sdhi_readw(host, SDHI_INFO2) & 0x2000))
- break;
- }
-
- if (timeout)
- sh_sdhi_writew(host, SDHI_CLK_CTRL,
- CLK_ENABLE | sh_sdhi_readw(host, SDHI_CLK_CTRL));
- else
- return -EBUSY;
-
- return 0;
-}
-
-static int sh_sdhi_sync_reset(struct sh_sdhi_host *host)
-{
- u32 timeout;
- sh_sdhi_writew(host, SDHI_SOFT_RST, SOFT_RST_ON);
- sh_sdhi_writew(host, SDHI_SOFT_RST, SOFT_RST_OFF);
- sh_sdhi_writew(host, SDHI_CLK_CTRL,
- CLK_ENABLE | sh_sdhi_readw(host, SDHI_CLK_CTRL));
-
- timeout = 100000;
- while (timeout--) {
- if (!(sh_sdhi_readw(host, SDHI_INFO2) & INFO2_CBUSY))
- break;
- udelay(100);
- }
-
- if (!timeout)
- return -EBUSY;
-
- if (host->quirks & SH_SDHI_QUIRK_16BIT_BUF)
- sh_sdhi_writew(host, SDHI_HOST_MODE, 1);
-
- return 0;
-}
-
-static int sh_sdhi_error_manage(struct sh_sdhi_host *host)
-{
- unsigned short e_state1, e_state2;
- int ret;
-
- host->sd_error = 0;
- host->wait_int = 0;
-
- e_state1 = sh_sdhi_readw(host, SDHI_ERR_STS1);
- e_state2 = sh_sdhi_readw(host, SDHI_ERR_STS2);
- if (e_state2 & ERR_STS2_SYS_ERROR) {
- if (e_state2 & ERR_STS2_RES_STOP_TIMEOUT)
- ret = -ETIMEDOUT;
- else
- ret = -EILSEQ;
- debug("%s: ERR_STS2 = %04x\n",
- DRIVER_NAME, sh_sdhi_readw(host, SDHI_ERR_STS2));
- sh_sdhi_sync_reset(host);
-
- sh_sdhi_writew(host, SDHI_INFO1_MASK,
- INFO1M_DATA3_CARD_RE | INFO1M_DATA3_CARD_IN);
- return ret;
- }
- if (e_state1 & ERR_STS1_CRC_ERROR || e_state1 & ERR_STS1_CMD_ERROR)
- ret = -EILSEQ;
- else
- ret = -ETIMEDOUT;
-
- debug("%s: ERR_STS1 = %04x\n",
- DRIVER_NAME, sh_sdhi_readw(host, SDHI_ERR_STS1));
- sh_sdhi_sync_reset(host);
- sh_sdhi_writew(host, SDHI_INFO1_MASK,
- INFO1M_DATA3_CARD_RE | INFO1M_DATA3_CARD_IN);
- return ret;
-}
-
-static int sh_sdhi_single_read(struct sh_sdhi_host *host, struct mmc_data *data)
-{
- long time;
- unsigned short blocksize, i;
- unsigned short *p = (unsigned short *)data->dest;
- u64 *q = (u64 *)data->dest;
-
- if ((unsigned long)p & 0x00000001) {
- debug(DRIVER_NAME": %s: The data pointer is unaligned.",
- __func__);
- return -EIO;
- }
-
- host->wait_int = 0;
- sh_sdhi_writew(host, SDHI_INFO2_MASK,
- ~(INFO2M_BRE_ENABLE | INFO2M_BUF_ILL_READ) &
- sh_sdhi_readw(host, SDHI_INFO2_MASK));
- sh_sdhi_writew(host, SDHI_INFO1_MASK,
- ~INFO1M_ACCESS_END &
- sh_sdhi_readw(host, SDHI_INFO1_MASK));
- time = sh_sdhi_wait_interrupt_flag(host);
- if (time == 0 || host->sd_error != 0)
- return sh_sdhi_error_manage(host);
-
- host->wait_int = 0;
- blocksize = sh_sdhi_readw(host, SDHI_SIZE);
- if (host->quirks & SH_SDHI_QUIRK_64BIT_BUF)
- for (i = 0; i < blocksize / 8; i++)
- *q++ = sh_sdhi_readq(host, SDHI_BUF0);
- else
- for (i = 0; i < blocksize / 2; i++)
- *p++ = sh_sdhi_readw(host, SDHI_BUF0);
-
- time = sh_sdhi_wait_interrupt_flag(host);
- if (time == 0 || host->sd_error != 0)
- return sh_sdhi_error_manage(host);
-
- host->wait_int = 0;
- return 0;
-}
-
-static int sh_sdhi_multi_read(struct sh_sdhi_host *host, struct mmc_data *data)
-{
- long time;
- unsigned short blocksize, i, sec;
- unsigned short *p = (unsigned short *)data->dest;
- u64 *q = (u64 *)data->dest;
-
- if ((unsigned long)p & 0x00000001) {
- debug(DRIVER_NAME": %s: The data pointer is unaligned.",
- __func__);
- return -EIO;
- }
-
- debug("%s: blocks = %d, blocksize = %d\n",
- __func__, data->blocks, data->blocksize);
-
- host->wait_int = 0;
- for (sec = 0; sec < data->blocks; sec++) {
- sh_sdhi_writew(host, SDHI_INFO2_MASK,
- ~(INFO2M_BRE_ENABLE | INFO2M_BUF_ILL_READ) &
- sh_sdhi_readw(host, SDHI_INFO2_MASK));
-
- time = sh_sdhi_wait_interrupt_flag(host);
- if (time == 0 || host->sd_error != 0)
- return sh_sdhi_error_manage(host);
-
- host->wait_int = 0;
- blocksize = sh_sdhi_readw(host, SDHI_SIZE);
- if (host->quirks & SH_SDHI_QUIRK_64BIT_BUF)
- for (i = 0; i < blocksize / 8; i++)
- *q++ = sh_sdhi_readq(host, SDHI_BUF0);
- else
- for (i = 0; i < blocksize / 2; i++)
- *p++ = sh_sdhi_readw(host, SDHI_BUF0);
- }
-
- return 0;
-}
-
-static int sh_sdhi_single_write(struct sh_sdhi_host *host,
- struct mmc_data *data)
-{
- long time;
- unsigned short blocksize, i;
- const unsigned short *p = (const unsigned short *)data->src;
- const u64 *q = (const u64 *)data->src;
-
- if ((unsigned long)p & 0x00000001) {
- debug(DRIVER_NAME": %s: The data pointer is unaligned.",
- __func__);
- return -EIO;
- }
-
- debug("%s: blocks = %d, blocksize = %d\n",
- __func__, data->blocks, data->blocksize);
-
- host->wait_int = 0;
- sh_sdhi_writew(host, SDHI_INFO2_MASK,
- ~(INFO2M_BWE_ENABLE | INFO2M_BUF_ILL_WRITE) &
- sh_sdhi_readw(host, SDHI_INFO2_MASK));
- sh_sdhi_writew(host, SDHI_INFO1_MASK,
- ~INFO1M_ACCESS_END &
- sh_sdhi_readw(host, SDHI_INFO1_MASK));
-
- time = sh_sdhi_wait_interrupt_flag(host);
- if (time == 0 || host->sd_error != 0)
- return sh_sdhi_error_manage(host);
-
- host->wait_int = 0;
- blocksize = sh_sdhi_readw(host, SDHI_SIZE);
- if (host->quirks & SH_SDHI_QUIRK_64BIT_BUF)
- for (i = 0; i < blocksize / 8; i++)
- sh_sdhi_writeq(host, SDHI_BUF0, *q++);
- else
- for (i = 0; i < blocksize / 2; i++)
- sh_sdhi_writew(host, SDHI_BUF0, *p++);
-
- time = sh_sdhi_wait_interrupt_flag(host);
- if (time == 0 || host->sd_error != 0)
- return sh_sdhi_error_manage(host);
-
- host->wait_int = 0;
- return 0;
-}
-
-static int sh_sdhi_multi_write(struct sh_sdhi_host *host, struct mmc_data *data)
-{
- long time;
- unsigned short i, sec, blocksize;
- const unsigned short *p = (const unsigned short *)data->src;
- const u64 *q = (const u64 *)data->src;
-
- debug("%s: blocks = %d, blocksize = %d\n",
- __func__, data->blocks, data->blocksize);
-
- host->wait_int = 0;
- for (sec = 0; sec < data->blocks; sec++) {
- sh_sdhi_writew(host, SDHI_INFO2_MASK,
- ~(INFO2M_BWE_ENABLE | INFO2M_BUF_ILL_WRITE) &
- sh_sdhi_readw(host, SDHI_INFO2_MASK));
-
- time = sh_sdhi_wait_interrupt_flag(host);
- if (time == 0 || host->sd_error != 0)
- return sh_sdhi_error_manage(host);
-
- host->wait_int = 0;
- blocksize = sh_sdhi_readw(host, SDHI_SIZE);
- if (host->quirks & SH_SDHI_QUIRK_64BIT_BUF)
- for (i = 0; i < blocksize / 8; i++)
- sh_sdhi_writeq(host, SDHI_BUF0, *q++);
- else
- for (i = 0; i < blocksize / 2; i++)
- sh_sdhi_writew(host, SDHI_BUF0, *p++);
- }
-
- return 0;
-}
-
-static void sh_sdhi_get_response(struct sh_sdhi_host *host, struct mmc_cmd *cmd)
-{
- unsigned short i, j, cnt = 1;
- unsigned short resp[8];
-
- if (cmd->resp_type & MMC_RSP_136) {
- cnt = 4;
- resp[0] = sh_sdhi_readw(host, SDHI_RSP00);
- resp[1] = sh_sdhi_readw(host, SDHI_RSP01);
- resp[2] = sh_sdhi_readw(host, SDHI_RSP02);
- resp[3] = sh_sdhi_readw(host, SDHI_RSP03);
- resp[4] = sh_sdhi_readw(host, SDHI_RSP04);
- resp[5] = sh_sdhi_readw(host, SDHI_RSP05);
- resp[6] = sh_sdhi_readw(host, SDHI_RSP06);
- resp[7] = sh_sdhi_readw(host, SDHI_RSP07);
-
- /* SDHI REGISTER SPECIFICATION */
- for (i = 7, j = 6; i > 0; i--) {
- resp[i] = (resp[i] << 8) & 0xff00;
- resp[i] |= (resp[j--] >> 8) & 0x00ff;
- }
- resp[0] = (resp[0] << 8) & 0xff00;
- } else {
- resp[0] = sh_sdhi_readw(host, SDHI_RSP00);
- resp[1] = sh_sdhi_readw(host, SDHI_RSP01);
- }
-
-#if defined(__BIG_ENDIAN_BITFIELD)
- if (cnt == 4) {
- cmd->response[0] = (resp[6] << 16) | resp[7];
- cmd->response[1] = (resp[4] << 16) | resp[5];
- cmd->response[2] = (resp[2] << 16) | resp[3];
- cmd->response[3] = (resp[0] << 16) | resp[1];
- } else {
- cmd->response[0] = (resp[0] << 16) | resp[1];
- }
-#else
- if (cnt == 4) {
- cmd->response[0] = (resp[7] << 16) | resp[6];
- cmd->response[1] = (resp[5] << 16) | resp[4];
- cmd->response[2] = (resp[3] << 16) | resp[2];
- cmd->response[3] = (resp[1] << 16) | resp[0];
- } else {
- cmd->response[0] = (resp[1] << 16) | resp[0];
- }
-#endif /* __BIG_ENDIAN_BITFIELD */
-}
-
-static unsigned short sh_sdhi_set_cmd(struct sh_sdhi_host *host,
- struct mmc_data *data, unsigned short opc)
-{
- if (host->app_cmd) {
- if (!data)
- host->app_cmd = 0;
- return opc | BIT(6);
- }
-
- switch (opc) {
- case MMC_CMD_SWITCH:
- return opc | (data ? 0x1c00 : 0x40);
- case MMC_CMD_SEND_EXT_CSD:
- return opc | (data ? 0x1c00 : 0);
- case MMC_CMD_SEND_OP_COND:
- return opc | 0x0700;
- case MMC_CMD_APP_CMD:
- host->app_cmd = 1;
- default:
- return opc;
- }
-}
-
-static unsigned short sh_sdhi_data_trans(struct sh_sdhi_host *host,
- struct mmc_data *data, unsigned short opc)
-{
- if (host->app_cmd) {
- host->app_cmd = 0;
- switch (opc) {
- case SD_CMD_APP_SEND_SCR:
- case SD_CMD_APP_SD_STATUS:
- return sh_sdhi_single_read(host, data);
- default:
- printf(DRIVER_NAME": SD: NOT SUPPORT APP CMD = d'%04d\n",
- opc);
- return -EINVAL;
- }
- } else {
- switch (opc) {
- case MMC_CMD_WRITE_MULTIPLE_BLOCK:
- return sh_sdhi_multi_write(host, data);
- case MMC_CMD_READ_MULTIPLE_BLOCK:
- return sh_sdhi_multi_read(host, data);
- case MMC_CMD_WRITE_SINGLE_BLOCK:
- return sh_sdhi_single_write(host, data);
- case MMC_CMD_READ_SINGLE_BLOCK:
- case MMC_CMD_SWITCH:
- case MMC_CMD_SEND_EXT_CSD:;
- return sh_sdhi_single_read(host, data);
- default:
- printf(DRIVER_NAME": SD: NOT SUPPORT CMD = d'%04d\n", opc);
- return -EINVAL;
- }
- }
-}
-
-static int sh_sdhi_start_cmd(struct sh_sdhi_host *host,
- struct mmc_data *data, struct mmc_cmd *cmd)
-{
- long time;
- unsigned short shcmd, opc = cmd->cmdidx;
- int ret = 0;
- unsigned long timeout;
-
- debug("opc = %d, arg = %x, resp_type = %x\n",
- opc, cmd->cmdarg, cmd->resp_type);
-
- if (opc == MMC_CMD_STOP_TRANSMISSION) {
- /* SDHI sends the STOP command automatically by STOP reg */
- sh_sdhi_writew(host, SDHI_INFO1_MASK, ~INFO1M_ACCESS_END &
- sh_sdhi_readw(host, SDHI_INFO1_MASK));
-
- time = sh_sdhi_wait_interrupt_flag(host);
- if (time == 0 || host->sd_error != 0)
- return sh_sdhi_error_manage(host);
-
- sh_sdhi_get_response(host, cmd);
- return 0;
- }
-
- if (data) {
- if ((opc == MMC_CMD_READ_MULTIPLE_BLOCK) ||
- opc == MMC_CMD_WRITE_MULTIPLE_BLOCK) {
- sh_sdhi_writew(host, SDHI_STOP, STOP_SEC_ENABLE);
- sh_sdhi_writew(host, SDHI_SECCNT, data->blocks);
- }
- sh_sdhi_writew(host, SDHI_SIZE, data->blocksize);
- }
-
- shcmd = sh_sdhi_set_cmd(host, data, opc);
-
- /*
- * U-Boot cannot use interrupt.
- * So this flag may not be clear by timing
- */
- sh_sdhi_writew(host, SDHI_INFO1, ~INFO1_RESP_END);
-
- sh_sdhi_writew(host, SDHI_INFO1_MASK,
- INFO1M_RESP_END | sh_sdhi_readw(host, SDHI_INFO1_MASK));
- sh_sdhi_writew(host, SDHI_ARG0,
- (unsigned short)(cmd->cmdarg & ARG0_MASK));
- sh_sdhi_writew(host, SDHI_ARG1,
- (unsigned short)((cmd->cmdarg >> 16) & ARG1_MASK));
-
- timeout = 100000;
- /* Waiting for SD Bus busy to be cleared */
- while (timeout--) {
- if ((sh_sdhi_readw(host, SDHI_INFO2) & 0x2000))
- break;
- }
-
- host->wait_int = 0;
- sh_sdhi_writew(host, SDHI_INFO1_MASK,
- ~INFO1M_RESP_END & sh_sdhi_readw(host, SDHI_INFO1_MASK));
- sh_sdhi_writew(host, SDHI_INFO2_MASK,
- ~(INFO2M_CMD_ERROR | INFO2M_CRC_ERROR |
- INFO2M_END_ERROR | INFO2M_TIMEOUT |
- INFO2M_RESP_TIMEOUT | INFO2M_ILA) &
- sh_sdhi_readw(host, SDHI_INFO2_MASK));
-
- sh_sdhi_writew(host, SDHI_CMD, (unsigned short)(shcmd & CMD_MASK));
- time = sh_sdhi_wait_interrupt_flag(host);
- if (!time) {
- host->app_cmd = 0;
- return sh_sdhi_error_manage(host);
- }
-
- if (host->sd_error) {
- switch (cmd->cmdidx) {
- case MMC_CMD_ALL_SEND_CID:
- case MMC_CMD_SELECT_CARD:
- case SD_CMD_SEND_IF_COND:
- case MMC_CMD_APP_CMD:
- ret = -ETIMEDOUT;
- break;
- default:
- debug(DRIVER_NAME": Cmd(d'%d) err\n", opc);
- debug(DRIVER_NAME": cmdidx = %d\n", cmd->cmdidx);
- ret = sh_sdhi_error_manage(host);
- break;
- }
- host->sd_error = 0;
- host->wait_int = 0;
- host->app_cmd = 0;
- return ret;
- }
-
- if (sh_sdhi_readw(host, SDHI_INFO1) & INFO1_RESP_END) {
- host->app_cmd = 0;
- return -EINVAL;
- }
-
- if (host->wait_int) {
- sh_sdhi_get_response(host, cmd);
- host->wait_int = 0;
- }
-
- if (data)
- ret = sh_sdhi_data_trans(host, data, opc);
-
- debug("ret = %d, resp = %08x, %08x, %08x, %08x\n",
- ret, cmd->response[0], cmd->response[1],
- cmd->response[2], cmd->response[3]);
- return ret;
-}
-
-static int sh_sdhi_send_cmd_common(struct sh_sdhi_host *host,
- struct mmc_cmd *cmd, struct mmc_data *data)
-{
- host->sd_error = 0;
-
- return sh_sdhi_start_cmd(host, data, cmd);
-}
-
-static int sh_sdhi_set_ios_common(struct sh_sdhi_host *host, struct mmc *mmc)
-{
- int ret;
-
- ret = sh_sdhi_clock_control(host, mmc->clock);
- if (ret)
- return -EINVAL;
-
- if (mmc->bus_width == 8)
- sh_sdhi_writew(host, SDHI_OPTION,
- OPT_BUS_WIDTH_8 | (~OPT_BUS_WIDTH_M &
- sh_sdhi_readw(host, SDHI_OPTION)));
- else if (mmc->bus_width == 4)
- sh_sdhi_writew(host, SDHI_OPTION,
- OPT_BUS_WIDTH_4 | (~OPT_BUS_WIDTH_M &
- sh_sdhi_readw(host, SDHI_OPTION)));
- else
- sh_sdhi_writew(host, SDHI_OPTION,
- OPT_BUS_WIDTH_1 | (~OPT_BUS_WIDTH_M &
- sh_sdhi_readw(host, SDHI_OPTION)));
-
- debug("clock = %d, buswidth = %d\n", mmc->clock, mmc->bus_width);
-
- return 0;
-}
-
-static int sh_sdhi_initialize_common(struct sh_sdhi_host *host)
-{
- int ret = sh_sdhi_sync_reset(host);
-
- sh_sdhi_writew(host, SDHI_PORTSEL, USE_1PORT);
-
-#if defined(__BIG_ENDIAN_BITFIELD)
- sh_sdhi_writew(host, SDHI_EXT_SWAP, SET_SWAP);
-#endif
-
- sh_sdhi_writew(host, SDHI_INFO1_MASK, INFO1M_RESP_END |
- INFO1M_ACCESS_END | INFO1M_CARD_RE |
- INFO1M_DATA3_CARD_RE | INFO1M_DATA3_CARD_IN);
-
- return ret;
-}
-
-#ifndef CONFIG_DM_MMC
-static void *mmc_priv(struct mmc *mmc)
-{
- return (void *)mmc->priv;
-}
-
-static int sh_sdhi_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
- struct mmc_data *data)
-{
- struct sh_sdhi_host *host = mmc_priv(mmc);
-
- return sh_sdhi_send_cmd_common(host, cmd, data);
-}
-
-static int sh_sdhi_set_ios(struct mmc *mmc)
-{
- struct sh_sdhi_host *host = mmc_priv(mmc);
-
- return sh_sdhi_set_ios_common(host, mmc);
-}
-
-static int sh_sdhi_initialize(struct mmc *mmc)
-{
- struct sh_sdhi_host *host = mmc_priv(mmc);
-
- return sh_sdhi_initialize_common(host);
-}
-
-static const struct mmc_ops sh_sdhi_ops = {
- .send_cmd = sh_sdhi_send_cmd,
- .set_ios = sh_sdhi_set_ios,
- .init = sh_sdhi_initialize,
-};
-
-#ifdef CONFIG_RCAR_GEN3
-static struct mmc_config sh_sdhi_cfg = {
- .name = DRIVER_NAME,
- .ops = &sh_sdhi_ops,
- .f_min = CLKDEV_INIT,
- .f_max = CLKDEV_HS_DATA,
- .voltages = MMC_VDD_165_195 | MMC_VDD_32_33 | MMC_VDD_33_34,
- .host_caps = MMC_MODE_4BIT | MMC_MODE_8BIT | MMC_MODE_HS |
- MMC_MODE_HS_52MHz,
- .part_type = PART_TYPE_DOS,
- .b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT,
-};
-#else
-static struct mmc_config sh_sdhi_cfg = {
- .name = DRIVER_NAME,
- .ops = &sh_sdhi_ops,
- .f_min = CLKDEV_INIT,
- .f_max = CLKDEV_HS_DATA,
- .voltages = MMC_VDD_32_33 | MMC_VDD_33_34,
- .host_caps = MMC_MODE_4BIT | MMC_MODE_HS,
- .part_type = PART_TYPE_DOS,
- .b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT,
-};
-#endif
-
-int sh_sdhi_init(unsigned long addr, int ch, unsigned long quirks)
-{
- int ret = 0;
- struct mmc *mmc;
- struct sh_sdhi_host *host = NULL;
-
- if (ch >= CFG_SYS_SH_SDHI_NR_CHANNEL)
- return -ENODEV;
-
- host = malloc(sizeof(struct sh_sdhi_host));
- if (!host)
- return -ENOMEM;
-
- mmc = mmc_create(&sh_sdhi_cfg, host);
- if (!mmc) {
- ret = -1;
- goto error;
- }
-
- host->ch = ch;
- host->addr = (void __iomem *)addr;
- host->quirks = quirks;
-
- if (host->quirks & SH_SDHI_QUIRK_64BIT_BUF)
- host->bus_shift = 2;
- else if (host->quirks & SH_SDHI_QUIRK_16BIT_BUF)
- host->bus_shift = 1;
-
- return ret;
-error:
- free(host);
- return ret;
-}
-
-#else
-
-struct sh_sdhi_plat {
- struct mmc_config cfg;
- struct mmc mmc;
-};
-
-int sh_sdhi_dm_send_cmd(struct udevice *dev, struct mmc_cmd *cmd,
- struct mmc_data *data)
-{
- struct sh_sdhi_host *host = dev_get_priv(dev);
-
- return sh_sdhi_send_cmd_common(host, cmd, data);
-}
-
-int sh_sdhi_dm_set_ios(struct udevice *dev)
-{
- struct sh_sdhi_host *host = dev_get_priv(dev);
- struct mmc *mmc = mmc_get_mmc_dev(dev);
-
- return sh_sdhi_set_ios_common(host, mmc);
-}
-
-static const struct dm_mmc_ops sh_sdhi_dm_ops = {
- .send_cmd = sh_sdhi_dm_send_cmd,
- .set_ios = sh_sdhi_dm_set_ios,
-};
-
-static int sh_sdhi_dm_bind(struct udevice *dev)
-{
- struct sh_sdhi_plat *plat = dev_get_plat(dev);
-
- return mmc_bind(dev, &plat->mmc, &plat->cfg);
-}
-
-static int sh_sdhi_dm_probe(struct udevice *dev)
-{
- struct sh_sdhi_plat *plat = dev_get_plat(dev);
- struct sh_sdhi_host *host = dev_get_priv(dev);
- struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
- struct clk sh_sdhi_clk;
- const u32 quirks = dev_get_driver_data(dev);
- fdt_addr_t base;
- int ret;
-
- base = dev_read_addr(dev);
- if (base == FDT_ADDR_T_NONE)
- return -EINVAL;
-
- host->addr = devm_ioremap(dev, base, SZ_2K);
- if (!host->addr)
- return -ENOMEM;
-
- ret = clk_get_by_index(dev, 0, &sh_sdhi_clk);
- if (ret) {
- debug("failed to get clock, ret=%d\n", ret);
- return ret;
- }
-
- ret = clk_enable(&sh_sdhi_clk);
- if (ret) {
- debug("failed to enable clock, ret=%d\n", ret);
- return ret;
- }
-
- host->quirks = quirks;
-
- if (host->quirks & SH_SDHI_QUIRK_64BIT_BUF)
- host->bus_shift = 2;
- else if (host->quirks & SH_SDHI_QUIRK_16BIT_BUF)
- host->bus_shift = 1;
-
- plat->cfg.name = dev->name;
- plat->cfg.host_caps = MMC_MODE_HS_52MHz | MMC_MODE_HS;
-
- switch (fdtdec_get_int(gd->fdt_blob, dev_of_offset(dev), "bus-width",
- 1)) {
- case 8:
- plat->cfg.host_caps |= MMC_MODE_8BIT;
- break;
- case 4:
- plat->cfg.host_caps |= MMC_MODE_4BIT;
- break;
- case 1:
- break;
- default:
- dev_err(dev, "Invalid \"bus-width\" value\n");
- return -EINVAL;
- }
-
- sh_sdhi_initialize_common(host);
-
- plat->cfg.voltages = MMC_VDD_165_195 | MMC_VDD_32_33 | MMC_VDD_33_34;
- plat->cfg.f_min = CLKDEV_INIT;
- plat->cfg.f_max = CLKDEV_HS_DATA;
- plat->cfg.b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT;
-
- upriv->mmc = &plat->mmc;
-
- return 0;
-}
-
-static const struct udevice_id sh_sdhi_sd_match[] = {
- { .compatible = "renesas,sdhi-r8a7795", .data = SH_SDHI_QUIRK_64BIT_BUF },
- { .compatible = "renesas,sdhi-r8a7796", .data = SH_SDHI_QUIRK_64BIT_BUF },
- { /* sentinel */ }
-};
-
-U_BOOT_DRIVER(sh_sdhi_mmc) = {
- .name = "sh-sdhi-mmc",
- .id = UCLASS_MMC,
- .of_match = sh_sdhi_sd_match,
- .bind = sh_sdhi_dm_bind,
- .probe = sh_sdhi_dm_probe,
- .priv_auto = sizeof(struct sh_sdhi_host),
- .plat_auto = sizeof(struct sh_sdhi_plat),
- .ops = &sh_sdhi_dm_ops,
-};
-#endif
projects / u-boot.git / commitdiff
