Some Renesas SuperH have MMCIF module. This driver supports it.
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh(a)renesas.com>
---
README | 9 +
drivers/mmc/Makefile | 1 +
drivers/mmc/sh_mmcif.c | 608 ++++++++++++++++++++++++++++++++++++++++++++++++
drivers/mmc/sh_mmcif.h | 238 +++++++++++++++++++
4 files changed, 856 insertions(+), 0 deletions(-)
create mode 100644 drivers/mmc/sh_mmcif.c
create mode 100644 drivers/mmc/sh_mmcif.h
diff --git a/README b/README
index 2da0f96..15eb6a2 100644
--- a/README
+++ b/README
@@ -1054,6 +1054,15 @@ The following options need to be configured:
enabled with CONFIG_CMD_MMC. The MMC driver also works with
the FAT fs. This is enabled with CONFIG_CMD_FAT.
+ CONFIG_SH_MMCIF
+ Support for Renesas on-chip MMCIF controller
+
+ CONFIG_SH_MMCIF_ADDR
+ Define the base address of MMCIF registers
+
+ CONFIG_SH_MMCIF_CLK
+ Define the clock frequency for MMCIF
+
- Journaling Flash filesystem support:
CONFIG_JFFS2_NAND, CONFIG_JFFS2_NAND_OFF, CONFIG_JFFS2_NAND_SIZE,
CONFIG_JFFS2_NAND_DEV
diff --git a/drivers/mmc/Makefile b/drivers/mmc/Makefile
index a8fe17a..2218961 100644
--- a/drivers/mmc/Makefile
+++ b/drivers/mmc/Makefile
@@ -38,6 +38,7 @@ COBJS-$(CONFIG_OMAP3_MMC) += omap3_mmc.o
COBJS-$(CONFIG_OMAP_HSMMC) += omap_hsmmc.o
COBJS-$(CONFIG_PXA_MMC) += pxa_mmc.o
COBJS-$(CONFIG_S5P_MMC) += s5p_mmc.o
+COBJS-$(CONFIG_SH_MMCIF) += sh_mmcif.o
COBJS := $(COBJS-y)
SRCS := $(COBJS:.o=.c)
diff --git a/drivers/mmc/sh_mmcif.c b/drivers/mmc/sh_mmcif.c
new file mode 100644
index 0000000..567e2cb
--- /dev/null
+++ b/drivers/mmc/sh_mmcif.c
@@ -0,0 +1,608 @@
+/*
+ * MMCIF driver.
+ *
+ * Copyright (C) 2011 Renesas Solutions Corp.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License.
+ */
+
+#include <config.h>
+#include <common.h>
+#include <watchdog.h>
+#include <command.h>
+#include <mmc.h>
+#include <malloc.h>
+#include <asm/errno.h>
+#include <asm/io.h>
+#include "sh_mmcif.h"
+
+#define DRIVER_NAME "sh_mmcif"
+
+static void *mmc_priv(struct mmc *mmc)
+{
+ return (void *)mmc->priv;
+}
+
+static int sh_mmcif_intr(void *dev_id)
+{
+ struct sh_mmcif_host *host = dev_id;
+ u32 state = 0;
+
+ state = sh_mmcif_read(&host->regs->ce_int);
+ state &= sh_mmcif_read(&host->regs->ce_int_mask);
+
+ if (state & INT_RBSYE) {
+ sh_mmcif_write(~(INT_RBSYE | INT_CRSPE), &host->regs->ce_int);
+ sh_mmcif_bitclr(MASK_MRBSYE, &host->regs->ce_int_mask);
+ goto end;
+ } else if (state & INT_CRSPE) {
+ sh_mmcif_write(~INT_CRSPE, &host->regs->ce_int);
+ sh_mmcif_bitclr(MASK_MCRSPE, &host->regs->ce_int_mask);
+ /* one more interrupt (INT_RBSYE) */
+ if (sh_mmcif_read(&host->regs->ce_cmd_set) & CMD_SET_RBSY)
+ return -EAGAIN;
+ goto end;
+ } else if (state & INT_BUFREN) {
+ sh_mmcif_write(~INT_BUFREN, &host->regs->ce_int);
+ sh_mmcif_bitclr(MASK_MBUFREN, &host->regs->ce_int_mask);
+ goto end;
+ } else if (state & INT_BUFWEN) {
+ sh_mmcif_write(~INT_BUFWEN, &host->regs->ce_int);
+ sh_mmcif_bitclr(MASK_MBUFWEN, &host->regs->ce_int_mask);
+ goto end;
+ } else if (state & INT_CMD12DRE) {
+ sh_mmcif_write(~(INT_CMD12DRE | INT_CMD12RBE | INT_CMD12CRE |
+ INT_BUFRE), &host->regs->ce_int);
+ sh_mmcif_bitclr(MASK_MCMD12DRE, &host->regs->ce_int_mask);
+ goto end;
+ } else if (state & INT_BUFRE) {
+ sh_mmcif_write(~INT_BUFRE, &host->regs->ce_int);
+ sh_mmcif_bitclr(MASK_MBUFRE, &host->regs->ce_int_mask);
+ goto end;
+ } else if (state & INT_DTRANE) {
+ sh_mmcif_write(~INT_DTRANE, &host->regs->ce_int);
+ sh_mmcif_bitclr(MASK_MDTRANE, &host->regs->ce_int_mask);
+ goto end;
+ } else if (state & INT_CMD12RBE) {
+ sh_mmcif_write(~(INT_CMD12RBE | INT_CMD12CRE),
+ &host->regs->ce_int);
+ sh_mmcif_bitclr(MASK_MCMD12RBE, &host->regs->ce_int_mask);
+ goto end;
+ } else if (state & INT_ERR_STS) {
+ /* err interrupts */
+ sh_mmcif_write(~state, &host->regs->ce_int);
+ sh_mmcif_bitclr(state, &host->regs->ce_int_mask);
+ goto err;
+ } else
+ return -EAGAIN;
+
+err:
+ host->sd_error = 1;
+ debug("%s: int err state = %08x\n", DRIVER_NAME, state);
+end:
+ host->wait_int = 1;
+ return 0;
+}
+
+static int mmcif_wait_interrupt_flag(struct sh_mmcif_host *host)
+{
+ int timeout = 10000000;
+
+ while (1) {
+ timeout--;
+ if (timeout < 0) {
+ printf("timeout\n");
+ return 0;
+ }
+
+ if (!sh_mmcif_intr(host))
+ break;
+
+ udelay(1); /* 1 usec */
+ }
+
+ return 1; /* Return value: NOT 0 = complete waiting */
+}
+
+static void sh_mmcif_clock_control(struct sh_mmcif_host *host, unsigned int clk)
+{
+ int i;
+
+ sh_mmcif_bitclr(CLK_ENABLE, &host->regs->ce_clk_ctrl);
+ sh_mmcif_bitclr(CLK_CLEAR, &host->regs->ce_clk_ctrl);
+
+ if (!clk)
+ return;
+ if (clk == CLKDEV_EMMC_DATA) {
+ sh_mmcif_bitset(CLK_PCLK, &host->regs->ce_clk_ctrl);
+ } else {
+ for (i = 1; (unsigned int)host->clk / (1 << i) >= clk; i++)
+ ;
+ sh_mmcif_bitset((i - 1) << 16, &host->regs->ce_clk_ctrl);
+ }
+ sh_mmcif_bitset(CLK_ENABLE, &host->regs->ce_clk_ctrl);
+}
+
+static void sh_mmcif_sync_reset(struct sh_mmcif_host *host)
+{
+ u32 tmp;
+
+ tmp = sh_mmcif_read(&host->regs->ce_clk_ctrl) & (CLK_ENABLE |
+ CLK_CLEAR);
+
+ sh_mmcif_write(SOFT_RST_ON, &host->regs->ce_version);
+ sh_mmcif_write(SOFT_RST_OFF, &host->regs->ce_version);
+ sh_mmcif_bitset(tmp | SRSPTO_256 | SRBSYTO_29 | SRWDTO_29 | SCCSTO_29,
+ &host->regs->ce_clk_ctrl);
+ /* byte swap on */
+ sh_mmcif_bitset(BUF_ACC_ATYP, &host->regs->ce_buf_acc);
+}
+
+static int sh_mmcif_error_manage(struct sh_mmcif_host *host)
+{
+ u32 state1, state2;
+ int ret, timeout = 10000000;
+
+ host->sd_error = 0;
+ host->wait_int = 0;
+
+ state1 = sh_mmcif_read(&host->regs->ce_host_sts1);
+ state2 = sh_mmcif_read(&host->regs->ce_host_sts2);
+ debug("%s: ERR HOST_STS1 = %08x\n", \
+ DRIVER_NAME, sh_mmcif_read(&host->regs->ce_host_sts1));
+ debug("%s: ERR HOST_STS2 = %08x\n", \
+ DRIVER_NAME, sh_mmcif_read(&host->regs->ce_host_sts2));
+
+ if (state1 & STS1_CMDSEQ) {
+ debug("%s: Forced end of command sequence\n", DRIVER_NAME);
+ sh_mmcif_bitset(CMD_CTRL_BREAK, &host->regs->ce_cmd_ctrl);
+ sh_mmcif_bitset(~CMD_CTRL_BREAK, &host->regs->ce_cmd_ctrl);
+ while (1) {
+ timeout--;
+ if (timeout < 0) {
+ printf(DRIVER_NAME": Forceed end of " \
+ "command sequence timeout err\n");
+ return -EILSEQ;
+ }
+ if (!(sh_mmcif_read(&host->regs->ce_host_sts1)
+ & STS1_CMDSEQ))
+ break;
+ }
+ sh_mmcif_sync_reset(host);
+ return -EILSEQ;
+ }
+
+ if (state2 & STS2_CRC_ERR)
+ ret = -EILSEQ;
+ else if (state2 & STS2_TIMEOUT_ERR)
+ ret = TIMEOUT;
+ else
+ ret = -EILSEQ;
+ return ret;
+}
+
+static int sh_mmcif_single_read(struct sh_mmcif_host *host,
+ struct mmc_data *data)
+{
+ long time;
+ u32 blocksize, i;
+ unsigned long *p = (unsigned long *)data->dest;
+
+ if ((unsigned long)p & 0x00000001) {
+ printf("%s: The data pointer is unaligned.", __func__);
+ return -EIO;
+ }
+
+ host->wait_int = 0;
+
+ /* buf read enable */
+ sh_mmcif_bitset(MASK_MBUFREN, &host->regs->ce_int_mask);
+ time = mmcif_wait_interrupt_flag(host);
+ if (time == 0 || host->sd_error != 0)
+ return sh_mmcif_error_manage(host);
+
+ host->wait_int = 0;
+ blocksize = (BLOCK_SIZE_MASK &
+ sh_mmcif_read(&host->regs->ce_block_set)) + 3;
+ for (i = 0; i < blocksize / 4; i++)
+ *p++ = sh_mmcif_read(&host->regs->ce_data);
+
+ /* buffer read end */
+ sh_mmcif_bitset(MASK_MBUFRE, &host->regs->ce_int_mask);
+ time = mmcif_wait_interrupt_flag(host);
+ if (time == 0 || host->sd_error != 0)
+ return sh_mmcif_error_manage(host);
+
+ host->wait_int = 0;
+ return 0;
+}
+
+static int sh_mmcif_multi_read(struct sh_mmcif_host *host,
+ struct mmc_data *data)
+{
+ long time;
+ u32 blocksize, i, j;
+ unsigned long *p = (unsigned long *)data->dest;
+
+ if ((unsigned long)p & 0x00000001) {
+ printf("%s: The data pointer is unaligned.", __func__);
+ return -EIO;
+ }
+
+ host->wait_int = 0;
+ blocksize = BLOCK_SIZE_MASK & sh_mmcif_read(&host->regs->ce_block_set);
+ for (j = 0; j < data->blocks; j++) {
+ sh_mmcif_bitset(MASK_MBUFREN, &host->regs->ce_int_mask);
+ time = mmcif_wait_interrupt_flag(host);
+ if (time == 0 || host->sd_error != 0)
+ return sh_mmcif_error_manage(host);
+
+ host->wait_int = 0;
+ for (i = 0; i < blocksize / 4; i++)
+ *p++ = sh_mmcif_read(&host->regs->ce_data);
+
+ WATCHDOG_RESET();
+ }
+ return 0;
+}
+
+static int sh_mmcif_single_write(struct sh_mmcif_host *host,
+ struct mmc_data *data)
+{
+ long time;
+ u32 blocksize, i;
+ const unsigned long *p = (unsigned long *)data->dest;
+
+ if ((unsigned long)p & 0x00000001) {
+ printf("%s: The data pointer is unaligned.", __func__);
+ return -EIO;
+ }
+
+ host->wait_int = 0;
+ sh_mmcif_bitset(MASK_MBUFWEN, &host->regs->ce_int_mask);
+
+ time = mmcif_wait_interrupt_flag(host);
+ if (time == 0 || host->sd_error != 0)
+ return sh_mmcif_error_manage(host);
+
+ host->wait_int = 0;
+ blocksize = (BLOCK_SIZE_MASK &
+ sh_mmcif_read(&host->regs->ce_block_set)) + 3;
+ for (i = 0; i < blocksize / 4; i++)
+ sh_mmcif_write(*p++, &host->regs->ce_data);
+
+ /* buffer write end */
+ sh_mmcif_bitset(MASK_MDTRANE, &host->regs->ce_int_mask);
+
+ time = mmcif_wait_interrupt_flag(host);
+ if (time == 0 || host->sd_error != 0)
+ return sh_mmcif_error_manage(host);
+
+ host->wait_int = 0;
+ return 0;
+}
+
+static int sh_mmcif_multi_write(struct sh_mmcif_host *host,
+ struct mmc_data *data)
+{
+ long time;
+ u32 i, j, blocksize;
+ const unsigned long *p = (unsigned long *)data->dest;
+
+ if ((unsigned long)p & 0x00000001) {
+ printf("%s: The data pointer is unaligned.", __func__);
+ return -EIO;
+ }
+
+ host->wait_int = 0;
+ blocksize = BLOCK_SIZE_MASK & sh_mmcif_read(&host->regs->ce_block_set);
+ for (j = 0; j < data->blocks; j++) {
+ sh_mmcif_bitset(MASK_MBUFWEN, &host->regs->ce_int_mask);
+
+ time = mmcif_wait_interrupt_flag(host);
+
+ if (time == 0 || host->sd_error != 0)
+ return sh_mmcif_error_manage(host);
+
+ host->wait_int = 0;
+ for (i = 0; i < blocksize / 4; i++)
+ sh_mmcif_write(*p++, &host->regs->ce_data);
+
+ WATCHDOG_RESET();
+ }
+ return 0;
+}
+
+static void sh_mmcif_get_response(struct sh_mmcif_host *host,
+ struct mmc_cmd *cmd)
+{
+ if (cmd->resp_type & MMC_RSP_136) {
+ cmd->response[0] = sh_mmcif_read(&host->regs->ce_resp3);
+ cmd->response[1] = sh_mmcif_read(&host->regs->ce_resp2);
+ cmd->response[2] = sh_mmcif_read(&host->regs->ce_resp1);
+ cmd->response[3] = sh_mmcif_read(&host->regs->ce_resp0);
+ debug(" RESP %08x, %08x, %08x, %08x\n", cmd->response[0],
+ cmd->response[1], cmd->response[2], cmd->response[3]);
+ } else {
+ cmd->response[0] = sh_mmcif_read(&host->regs->ce_resp0);
+ }
+}
+
+static void sh_mmcif_get_cmd12response(struct sh_mmcif_host *host,
+ struct mmc_cmd *cmd)
+{
+ cmd->response[0] = sh_mmcif_read(&host->regs->ce_resp_cmd12);
+}
+
+static u32 sh_mmcif_set_cmd(struct sh_mmcif_host *host,
+ struct mmc_data *data, struct mmc_cmd *cmd)
+{
+ u32 tmp = 0;
+ u32 opc = cmd->cmdidx;
+
+ /* Response Type check */
+ switch (cmd->resp_type) {
+ case MMC_RSP_NONE:
+ tmp |= CMD_SET_RTYP_NO;
+ break;
+ case MMC_RSP_R1:
+ case MMC_RSP_R1b:
+ case MMC_RSP_R3:
+ tmp |= CMD_SET_RTYP_6B;
+ break;
+ case MMC_RSP_R2:
+ tmp |= CMD_SET_RTYP_17B;
+ break;
+ default:
+ printf(DRIVER_NAME": Not support type response.\n");
+ break;
+ }
+
+ /* RBSY */
+ if (opc == MMC_CMD_SWITCH)
+ tmp |= CMD_SET_RBSY;
+
+ /* WDAT / DATW */
+ if (host->data) {
+ tmp |= CMD_SET_WDAT;
+ switch (host->bus_width) {
+ case MMC_BUS_WIDTH_1:
+ tmp |= CMD_SET_DATW_1;
+ break;
+ case MMC_BUS_WIDTH_4:
+ tmp |= CMD_SET_DATW_4;
+ break;
+ case MMC_BUS_WIDTH_8:
+ tmp |= CMD_SET_DATW_8;
+ break;
+ default:
+ printf(DRIVER_NAME": Not support bus width.\n");
+ break;
+ }
+ }
+ /* DWEN */
+ if (opc == MMC_CMD_WRITE_SINGLE_BLOCK ||
+ opc == MMC_CMD_WRITE_MULTIPLE_BLOCK)
+ tmp |= CMD_SET_DWEN;
+ /* CMLTE/CMD12EN */
+ if (opc == MMC_CMD_READ_MULTIPLE_BLOCK ||
+ opc == MMC_CMD_WRITE_MULTIPLE_BLOCK) {
+ tmp |= CMD_SET_CMLTE | CMD_SET_CMD12EN;
+ sh_mmcif_bitset(data->blocks << 16, &host->regs->ce_block_set);
+ }
+ /* RIDXC[1:0] check bits */
+ if (opc == MMC_CMD_SEND_OP_COND || opc == MMC_CMD_ALL_SEND_CID ||
+ opc == MMC_CMD_SEND_CSD || opc == MMC_CMD_SEND_CID)
+ tmp |= CMD_SET_RIDXC_BITS;
+ /* RCRC7C[1:0] check bits */
+ if (opc == MMC_CMD_SEND_OP_COND)
+ tmp |= CMD_SET_CRC7C_BITS;
+ /* RCRC7C[1:0] internal CRC7 */
+ if (opc == MMC_CMD_ALL_SEND_CID ||
+ opc == MMC_CMD_SEND_CSD || opc == MMC_CMD_SEND_CID)
+ tmp |= CMD_SET_CRC7C_INTERNAL;
+
+ return opc = ((opc << 24) | tmp);
+}
+
+static u32 sh_mmcif_data_trans(struct sh_mmcif_host *host,
+ struct mmc_data *data, u16 opc)
+{
+ u32 ret;
+
+ switch (opc) {
+ case MMC_CMD_READ_MULTIPLE_BLOCK:
+ ret = sh_mmcif_multi_read(host, data);
+ break;
+ case MMC_CMD_WRITE_MULTIPLE_BLOCK:
+ ret = sh_mmcif_multi_write(host, data);
+ break;
+ case MMC_CMD_WRITE_SINGLE_BLOCK:
+ ret = sh_mmcif_single_write(host, data);
+ break;
+ case MMC_CMD_READ_SINGLE_BLOCK:
+ case MMC_CMD_SEND_EXT_CSD:
+ ret = sh_mmcif_single_read(host, data);
+ break;
+ default:
+ printf(DRIVER_NAME": NOT SUPPORT CMD = d'%08d\n", opc);
+ ret = -EINVAL;
+ break;
+ }
+ return ret;
+}
+
+static int sh_mmcif_start_cmd(struct sh_mmcif_host *host,
+ struct mmc_data *data, struct mmc_cmd *cmd)
+{
+ long time;
+ int ret = 0, mask = 0;
+ u32 opc = cmd->cmdidx;
+
+ if (opc == MMC_CMD_STOP_TRANSMISSION) {
+ /* MMCIF sends the STOP command automatically */
+ if (host->last_cmd == MMC_CMD_READ_MULTIPLE_BLOCK)
+ sh_mmcif_bitset(MASK_MCMD12DRE,
+ &host->regs->ce_int_mask);
+ else
+ sh_mmcif_bitset(MASK_MCMD12RBE,
+ &host->regs->ce_int_mask);
+
+ time = mmcif_wait_interrupt_flag(host);
+ if (time == 0 || host->sd_error != 0)
+ return sh_mmcif_error_manage(host);
+
+ sh_mmcif_get_cmd12response(host, cmd);
+ return 0;
+ }
+ if (opc == MMC_CMD_SWITCH)
+ mask = MASK_MRBSYE;
+ else
+ mask = MASK_MCRSPE;
+
+ mask |= MASK_MCMDVIO | MASK_MBUFVIO | MASK_MWDATERR |
+ MASK_MRDATERR | MASK_MRIDXERR | MASK_MRSPERR |
+ MASK_MCCSTO | MASK_MCRCSTO | MASK_MWDATTO |
+ MASK_MRDATTO | MASK_MRBSYTO | MASK_MRSPTO;
+
+ if (host->data) {
+ sh_mmcif_write(0, &host->regs->ce_block_set);
+ sh_mmcif_write(data->blocksize, &host->regs->ce_block_set);
+ }
+ opc = sh_mmcif_set_cmd(host, data, cmd);
+
+ sh_mmcif_write(INT_START_MAGIC, &host->regs->ce_int);
+ sh_mmcif_write(mask, &host->regs->ce_int_mask);
+
+ debug("CMD%d ARG:%08x\n", cmd->cmdidx, cmd->cmdarg);
+ /* set arg */
+ sh_mmcif_write(cmd->cmdarg, &host->regs->ce_arg);
+ host->wait_int = 0;
+ /* set cmd */
+ sh_mmcif_write(opc, &host->regs->ce_cmd_set);
+
+ time = mmcif_wait_interrupt_flag(host);
+ if (time == 0)
+ return sh_mmcif_error_manage(host);
+
+ if (host->sd_error) {
+ switch (cmd->cmdidx) {
+ case MMC_CMD_ALL_SEND_CID:
+ case MMC_CMD_SELECT_CARD:
+ case MMC_CMD_APP_CMD:
+ ret = TIMEOUT;
+ break;
+ default:
+ printf(DRIVER_NAME": Cmd(d'%d) err\n", cmd->cmdidx);
+ ret = sh_mmcif_error_manage(host);
+ break;
+ }
+ host->sd_error = 0;
+ host->wait_int = 0;
+ return ret;
+ }
+
+ /* if no response */
+ if (!(opc & 0x00C00000))
+ return 0;
+
+ if (host->wait_int == 1) {
+ sh_mmcif_get_response(host, cmd);
+ host->wait_int = 0;
+ }
+ if (host->data)
+ ret = sh_mmcif_data_trans(host, data, cmd->cmdidx);
+ host->last_cmd = cmd->cmdidx;
+
+ return ret;
+}
+
+static int sh_mmcif_request(struct mmc *mmc, struct mmc_cmd *cmd,
+ struct mmc_data *data)
+{
+ struct sh_mmcif_host *host = mmc_priv(mmc);
+ int ret;
+
+ WATCHDOG_RESET();
+
+ switch (cmd->cmdidx) {
+ case MMC_CMD_APP_CMD:
+ return TIMEOUT;
+ case MMC_CMD_SEND_EXT_CSD: /* = SD_SEND_IF_COND (8) */
+ if (data)
+ /* ext_csd */
+ break;
+ else
+ /* send_if_cond cmd (not support) */
+ return TIMEOUT;
+ default:
+ break;
+ }
+ host->sd_error = 0;
+ host->data = data;
+ ret = sh_mmcif_start_cmd(host, data, cmd);
+ host->data = NULL;
+
+ return ret;
+}
+
+static void sh_mmcif_set_ios(struct mmc *mmc)
+{
+ struct sh_mmcif_host *host = mmc_priv(mmc);
+
+ if (mmc->clock)
+ sh_mmcif_clock_control(host, mmc->clock);
+
+ if (mmc->bus_width == 8)
+ host->bus_width = MMC_BUS_WIDTH_8;
+ else if (mmc->bus_width == 4)
+ host->bus_width = MMC_BUS_WIDTH_4;
+ else
+ host->bus_width = MMC_BUS_WIDTH_1;
+
+ debug("clock = %d, buswidth = %d\n", mmc->clock, mmc->bus_width);
+}
+
+static int sh_mmcif_init(struct mmc *mmc)
+{
+ struct sh_mmcif_host *host = mmc_priv(mmc);
+
+ sh_mmcif_sync_reset(host);
+ sh_mmcif_write(MASK_ALL, &host->regs->ce_int_mask);
+ return 0;
+}
+
+int mmcif_mmc_init(void)
+{
+ int ret = 0;
+ struct mmc *mmc;
+ struct sh_mmcif_host *host = NULL;
+
+ mmc = malloc(sizeof(struct mmc));
+ if (!mmc)
+ ret = -ENOMEM;
+ memset(mmc, 0, sizeof(*mmc));
+ host = malloc(sizeof(struct sh_mmcif_host));
+ if (!host)
+ ret = -ENOMEM;
+ memset(host, 0, sizeof(*host));
+
+ mmc->f_min = CLKDEV_MMC_INIT;
+ mmc->f_max = CLKDEV_EMMC_DATA;
+ mmc->voltages = MMC_VDD_32_33 | MMC_VDD_33_34;
+ mmc->host_caps = MMC_MODE_HS | MMC_MODE_HS_52MHz | MMC_MODE_4BIT |
+ MMC_MODE_8BIT;
+ memcpy(mmc->name, DRIVER_NAME, sizeof(DRIVER_NAME));
+ mmc->send_cmd = sh_mmcif_request;
+ mmc->set_ios = sh_mmcif_set_ios;
+ mmc->init = sh_mmcif_init;
+ host->regs = (struct sh_mmcif_regs *)CONFIG_SH_MMCIF_ADDR;
+ host->clk = CONFIG_SH_MMCIF_CLK;
+ mmc->priv = host;
+
+ mmc_register(mmc);
+
+ return ret;
+}
diff --git a/drivers/mmc/sh_mmcif.h b/drivers/mmc/sh_mmcif.h
new file mode 100644
index 0000000..bd6fbf7
--- /dev/null
+++ b/drivers/mmc/sh_mmcif.h
@@ -0,0 +1,238 @@
+/*
+ * MMCIF driver.
+ *
+ * Copyright (C) 2011 Renesas Solutions Corp.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License.
+ *
+ */
+
+#ifndef _SH_MMCIF_H_
+#define _SH_MMCIF_H_
+
+struct sh_mmcif_regs {
+ unsigned long ce_cmd_set;
+ unsigned long reserved;
+ unsigned long ce_arg;
+ unsigned long ce_arg_cmd12;
+ unsigned long ce_cmd_ctrl;
+ unsigned long ce_block_set;
+ unsigned long ce_clk_ctrl;
+ unsigned long ce_buf_acc;
+ unsigned long ce_resp3;
+ unsigned long ce_resp2;
+ unsigned long ce_resp1;
+ unsigned long ce_resp0;
+ unsigned long ce_resp_cmd12;
+ unsigned long ce_data;
+ unsigned long reserved2[2];
+ unsigned long ce_int;
+ unsigned long ce_int_mask;
+ unsigned long ce_host_sts1;
+ unsigned long ce_host_sts2;
+ unsigned long reserved3[11];
+ unsigned long ce_version;
+};
+
+/* CE_CMD_SET */
+#define CMD_MASK 0x3f000000
+#define CMD_SET_RTYP_NO ((0 << 23) | (0 << 22))
+/* R1/R1b/R3/R4/R5 */
+#define CMD_SET_RTYP_6B ((0 << 23) | (1 << 22))
+/* R2 */
+#define CMD_SET_RTYP_17B ((1 << 23) | (0 << 22))
+/* R1b */
+#define CMD_SET_RBSY (1 << 21)
+#define CMD_SET_CCSEN (1 << 20)
+/* 1: on data, 0: no data */
+#define CMD_SET_WDAT (1 << 19)
+/* 1: write to card, 0: read from card */
+#define CMD_SET_DWEN (1 << 18)
+/* 1: multi block trans, 0: single */
+#define CMD_SET_CMLTE (1 << 17)
+/* 1: CMD12 auto issue */
+#define CMD_SET_CMD12EN (1 << 16)
+/* index check */
+#define CMD_SET_RIDXC_INDEX ((0 << 15) | (0 << 14))
+/* check bits check */
+#define CMD_SET_RIDXC_BITS ((0 << 15) | (1 << 14))
+/* no check */
+#define CMD_SET_RIDXC_NO ((1 << 15) | (0 << 14))
+/* 1: CRC7 check*/
+#define CMD_SET_CRC7C ((0 << 13) | (0 << 12))
+/* 1: check bits check*/
+#define CMD_SET_CRC7C_BITS ((0 << 13) | (1 << 12))
+/* 1: internal CRC7 check*/
+#define CMD_SET_CRC7C_INTERNAL ((1 << 13) | (0 << 12))
+/* 1: CRC16 check*/
+#define CMD_SET_CRC16C (1 << 10)
+/* 1: not receive CRC status */
+#define CMD_SET_CRCSTE (1 << 8)
+/* 1: tran mission bit "Low" */
+#define CMD_SET_TBIT (1 << 7)
+/* 1: open/drain */
+#define CMD_SET_OPDM (1 << 6)
+#define CMD_SET_CCSH (1 << 5)
+/* 1bit */
+#define CMD_SET_DATW_1 ((0 << 1) | (0 << 0))
+/* 4bit */
+#define CMD_SET_DATW_4 ((0 << 1) | (1 << 0))
+/* 8bit */
+#define CMD_SET_DATW_8 ((1 << 1) | (0 << 0))
+
+/* CE_CMD_CTRL */
+#define CMD_CTRL_BREAK (1 << 0)
+
+/* CE_BLOCK_SET */
+#define BLOCK_SIZE_MASK 0x0000ffff
+
+/* CE_CLK_CTRL */
+#define CLK_ENABLE (1 << 24)
+#define CLK_CLEAR ((1 << 19) | (1 << 18) | (1 << 17) | (1 << 16))
+#define CLK_PCLK ((1 << 19) | (1 << 18) | (1 << 17) | (1 << 16))
+/* respons timeout */
+#define SRSPTO_256 ((1 << 13) | (0 << 12))
+/* respons busy timeout */
+#define SRBSYTO_29 ((1 << 11) | (1 << 10) | (1 << 9) | (1 << 8))
+/* read/write timeout */
+#define SRWDTO_29 ((1 << 7) | (1 << 6) | (1 << 5) | (1 << 4))
+/* ccs timeout */
+#define SCCSTO_29 ((1 << 3) | (1 << 2) | (1 << 1) | (1 << 0))
+
+/* CE_BUF_ACC */
+#define BUF_ACC_DMAWEN (1 << 25)
+#define BUF_ACC_DMAREN (1 << 24)
+#define BUF_ACC_BUSW_32 (0 << 17)
+#define BUF_ACC_BUSW_16 (1 << 17)
+#define BUF_ACC_ATYP (1 << 16)
+
+/* CE_INT */
+#define INT_CCSDE (1 << 29)
+#define INT_CMD12DRE (1 << 26)
+#define INT_CMD12RBE (1 << 25)
+#define INT_CMD12CRE (1 << 24)
+#define INT_DTRANE (1 << 23)
+#define INT_BUFRE (1 << 22)
+#define INT_BUFWEN (1 << 21)
+#define INT_BUFREN (1 << 20)
+#define INT_CCSRCV (1 << 19)
+#define INT_RBSYE (1 << 17)
+#define INT_CRSPE (1 << 16)
+#define INT_CMDVIO (1 << 15)
+#define INT_BUFVIO (1 << 14)
+#define INT_WDATERR (1 << 11)
+#define INT_RDATERR (1 << 10)
+#define INT_RIDXERR (1 << 9)
+#define INT_RSPERR (1 << 8)
+#define INT_CCSTO (1 << 5)
+#define INT_CRCSTO (1 << 4)
+#define INT_WDATTO (1 << 3)
+#define INT_RDATTO (1 << 2)
+#define INT_RBSYTO (1 << 1)
+#define INT_RSPTO (1 << 0)
+#define INT_ERR_STS (INT_CMDVIO | INT_BUFVIO | INT_WDATERR | \
+ INT_RDATERR | INT_RIDXERR | INT_RSPERR | \
+ INT_CCSTO | INT_CRCSTO | INT_WDATTO | \
+ INT_RDATTO | INT_RBSYTO | INT_RSPTO)
+#define INT_START_MAGIC 0xD80430C0
+
+/* CE_INT_MASK */
+#define MASK_ALL 0x00000000
+#define MASK_MCCSDE (1 << 29)
+#define MASK_MCMD12DRE (1 << 26)
+#define MASK_MCMD12RBE (1 << 25)
+#define MASK_MCMD12CRE (1 << 24)
+#define MASK_MDTRANE (1 << 23)
+#define MASK_MBUFRE (1 << 22)
+#define MASK_MBUFWEN (1 << 21)
+#define MASK_MBUFREN (1 << 20)
+#define MASK_MCCSRCV (1 << 19)
+#define MASK_MRBSYE (1 << 17)
+#define MASK_MCRSPE (1 << 16)
+#define MASK_MCMDVIO (1 << 15)
+#define MASK_MBUFVIO (1 << 14)
+#define MASK_MWDATERR (1 << 11)
+#define MASK_MRDATERR (1 << 10)
+#define MASK_MRIDXERR (1 << 9)
+#define MASK_MRSPERR (1 << 8)
+#define MASK_MCCSTO (1 << 5)
+#define MASK_MCRCSTO (1 << 4)
+#define MASK_MWDATTO (1 << 3)
+#define MASK_MRDATTO (1 << 2)
+#define MASK_MRBSYTO (1 << 1)
+#define MASK_MRSPTO (1 << 0)
+
+/* CE_HOST_STS1 */
+#define STS1_CMDSEQ (1 << 31)
+
+/* CE_HOST_STS2 */
+#define STS2_CRCSTE (1 << 31)
+#define STS2_CRC16E (1 << 30)
+#define STS2_AC12CRCE (1 << 29)
+#define STS2_RSPCRC7E (1 << 28)
+#define STS2_CRCSTEBE (1 << 27)
+#define STS2_RDATEBE (1 << 26)
+#define STS2_AC12REBE (1 << 25)
+#define STS2_RSPEBE (1 << 24)
+#define STS2_AC12IDXE (1 << 23)
+#define STS2_RSPIDXE (1 << 22)
+#define STS2_CCSTO (1 << 15)
+#define STS2_RDATTO (1 << 14)
+#define STS2_DATBSYTO (1 << 13)
+#define STS2_CRCSTTO (1 << 12)
+#define STS2_AC12BSYTO (1 << 11)
+#define STS2_RSPBSYTO (1 << 10)
+#define STS2_AC12RSPTO (1 << 9)
+#define STS2_RSPTO (1 << 8)
+
+#define STS2_CRC_ERR (STS2_CRCSTE | STS2_CRC16E | \
+ STS2_AC12CRCE | STS2_RSPCRC7E | STS2_CRCSTEBE)
+#define STS2_TIMEOUT_ERR (STS2_CCSTO | STS2_RDATTO | \
+ STS2_DATBSYTO | STS2_CRCSTTO | \
+ STS2_AC12BSYTO | STS2_RSPBSYTO | \
+ STS2_AC12RSPTO | STS2_RSPTO)
+
+/* CE_VERSION */
+#define SOFT_RST_ON (1 << 31)
+#define SOFT_RST_OFF (0 << 31)
+
+#define CLKDEV_EMMC_DATA 52000000 /* 52MHz */
+#define CLKDEV_MMC_INIT 400000 /* 100 - 400 KHz */
+
+#define MMC_BUS_WIDTH_1 0
+#define MMC_BUS_WIDTH_4 2
+#define MMC_BUS_WIDTH_8 3
+
+struct sh_mmcif_host {
+ struct mmc_data *data;
+ struct sh_mmcif_regs *regs;
+ unsigned int clk;
+ int bus_width;
+ u16 wait_int;
+ u16 sd_error;
+ u8 last_cmd;
+};
+
+static inline u32 sh_mmcif_read(unsigned long *reg)
+{
+ return readl(reg);
+}
+
+static inline void sh_mmcif_write(u32 val, unsigned long *reg)
+{
+ writel(val, reg);
+}
+
+static inline void sh_mmcif_bitset(u32 val, unsigned long *reg)
+{
+ sh_mmcif_write(val | sh_mmcif_read(reg), reg);
+}
+
+static inline void sh_mmcif_bitclr(u32 val, unsigned long *reg)
+{
+ sh_mmcif_write(~val & sh_mmcif_read(reg), reg);
+}
+
+#endif /* _SH_MMCIF_H_ */
--
1.7.1
