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-rw-r--r--drivers/mmc/Makefile2
-rw-r--r--drivers/mmc/fsl_esdhc.c39
-rw-r--r--drivers/mmc/mmc.c4
-rw-r--r--drivers/mmc/mxsmmc.c5
-rw-r--r--drivers/mmc/omap_hsmmc.c114
-rw-r--r--drivers/mmc/s5p_mmc.c490
-rw-r--r--drivers/mmc/s5p_sdhci.c98
-rw-r--r--drivers/mmc/sdhci.c24
8 files changed, 268 insertions, 508 deletions
diff --git a/drivers/mmc/Makefile b/drivers/mmc/Makefile
index c245352ac..a8e681c2f 100644
--- a/drivers/mmc/Makefile
+++ b/drivers/mmc/Makefile
@@ -39,8 +39,8 @@ COBJS-$(CONFIG_MXS_MMC) += mxsmmc.o
COBJS-$(CONFIG_OMAP_HSMMC) += omap_hsmmc.o
COBJS-$(CONFIG_PXA_MMC) += pxa_mmc.o
COBJS-$(CONFIG_PXA_MMC_GENERIC) += pxa_mmc_gen.o
-COBJS-$(CONFIG_S5P_MMC) += s5p_mmc.o
COBJS-$(CONFIG_SDHCI) += sdhci.o
+COBJS-$(CONFIG_S5P_SDHCI) += s5p_sdhci.o
COBJS-$(CONFIG_SH_MMCIF) += sh_mmcif.o
COBJS-$(CONFIG_TEGRA2_MMC) += tegra2_mmc.o
diff --git a/drivers/mmc/fsl_esdhc.c b/drivers/mmc/fsl_esdhc.c
index a2f35e3e9..07370b572 100644
--- a/drivers/mmc/fsl_esdhc.c
+++ b/drivers/mmc/fsl_esdhc.c
@@ -307,19 +307,56 @@ esdhc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data)
#else
esdhc_write32(&regs->xfertyp, xfertyp);
#endif
+
+ /* Mask all irqs */
+ esdhc_write32(&regs->irqsigen, 0);
+
/* Wait for the command to complete */
- while (!(esdhc_read32(&regs->irqstat) & IRQSTAT_CC))
+ while (!(esdhc_read32(&regs->irqstat) & (IRQSTAT_CC | IRQSTAT_CTOE)))
;
irqstat = esdhc_read32(&regs->irqstat);
esdhc_write32(&regs->irqstat, irqstat);
+ /* Reset CMD and DATA portions on error */
+ if (irqstat & (CMD_ERR | IRQSTAT_CTOE)) {
+ esdhc_write32(&regs->sysctl, esdhc_read32(&regs->sysctl) |
+ SYSCTL_RSTC);
+ while (esdhc_read32(&regs->sysctl) & SYSCTL_RSTC)
+ ;
+
+ if (data) {
+ esdhc_write32(&regs->sysctl,
+ esdhc_read32(&regs->sysctl) |
+ SYSCTL_RSTD);
+ while ((esdhc_read32(&regs->sysctl) & SYSCTL_RSTD))
+ ;
+ }
+ }
+
if (irqstat & CMD_ERR)
return COMM_ERR;
if (irqstat & IRQSTAT_CTOE)
return TIMEOUT;
+ /* Workaround for ESDHC errata ENGcm03648 */
+ if (!data && (cmd->resp_type & MMC_RSP_BUSY)) {
+ int timeout = 2500;
+
+ /* Poll on DATA0 line for cmd with busy signal for 250 ms */
+ while (timeout > 0 && !(esdhc_read32(&regs->prsstat) &
+ PRSSTAT_DAT0)) {
+ udelay(100);
+ timeout--;
+ }
+
+ if (timeout <= 0) {
+ printf("Timeout waiting for DAT0 to go high!\n");
+ return TIMEOUT;
+ }
+ }
+
/* Copy the response to the response buffer */
if (cmd->resp_type & MMC_RSP_136) {
u32 cmdrsp3, cmdrsp2, cmdrsp1, cmdrsp0;
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
index 596732e80..aebe578ff 100644
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -1199,7 +1199,9 @@ int mmc_startup(struct mmc *mmc)
else
mmc_set_clock(mmc, 25000000);
} else {
- for (width = EXT_CSD_BUS_WIDTH_8; width >= 0; width--) {
+ width = ((mmc->host_caps & MMC_MODE_MASK_WIDTH_BITS) >>
+ MMC_MODE_WIDTH_BITS_SHIFT);
+ for (; width >= 0; width--) {
/* Set the card to use 4 bit*/
err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_BUS_WIDTH, width);
diff --git a/drivers/mmc/mxsmmc.c b/drivers/mmc/mxsmmc.c
index 35c6bdabb..4187a9412 100644
--- a/drivers/mmc/mxsmmc.c
+++ b/drivers/mmc/mxsmmc.c
@@ -133,7 +133,8 @@ mxsmmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data)
/* READ or WRITE */
if (data->flags & MMC_DATA_READ) {
ctrl0 |= SSP_CTRL0_READ;
- } else if (priv->mmc_is_wp(mmc->block_dev.dev)) {
+ } else if (priv->mmc_is_wp &&
+ priv->mmc_is_wp(mmc->block_dev.dev)) {
printf("MMC%d: Can not write a locked card!\n",
mmc->block_dev.dev);
return UNUSABLE_ERR;
@@ -406,7 +407,7 @@ int mxsmmc_initialize(bd_t *bis, int id, int (*wp)(int))
*/
mmc->f_min = 400000;
mmc->f_max = mxc_get_clock(MXC_SSP0_CLK + id) * 1000 / 2;
- mmc->b_max = 0x40;
+ mmc->b_max = 0x20;
mmc_register(mmc);
return 0;
diff --git a/drivers/mmc/omap_hsmmc.c b/drivers/mmc/omap_hsmmc.c
index 2400db2f3..afd9b30b5 100644
--- a/drivers/mmc/omap_hsmmc.c
+++ b/drivers/mmc/omap_hsmmc.c
@@ -29,10 +29,15 @@
#include <i2c.h>
#include <twl4030.h>
#include <twl6030.h>
+#include <twl6035.h>
#include <asm/io.h>
#include <asm/arch/mmc_host_def.h>
#include <asm/arch/sys_proto.h>
+/* common definitions for all OMAPs */
+#define SYSCTL_SRC (1 << 25)
+#define SYSCTL_SRD (1 << 26)
+
/* If we fail after 1 second wait, something is really bad */
#define MAX_RETRY_MS 1000
@@ -45,8 +50,8 @@ static struct mmc hsmmc_dev[2];
static void omap4_vmmc_pbias_config(struct mmc *mmc)
{
u32 value = 0;
- struct omap4_sys_ctrl_regs *const ctrl =
- (struct omap4_sys_ctrl_regs *)SYSCTRL_GENERAL_CORE_BASE;
+ struct omap_sys_ctrl_regs *const ctrl =
+ (struct omap_sys_ctrl_regs *) SYSCTRL_GENERAL_CORE_BASE;
value = readl(&ctrl->control_pbiaslite);
@@ -60,17 +65,51 @@ static void omap4_vmmc_pbias_config(struct mmc *mmc)
}
#endif
-unsigned char mmc_board_init(struct mmc *mmc)
+#if defined(CONFIG_OMAP54XX) && defined(CONFIG_TWL6035_POWER)
+static void omap5_pbias_config(struct mmc *mmc)
{
-#if defined(CONFIG_TWL4030_POWER)
- twl4030_power_mmc_init();
+ u32 value = 0;
+ struct omap_sys_ctrl_regs *const ctrl =
+ (struct omap_sys_ctrl_regs *) SYSCTRL_GENERAL_CORE_BASE;
+
+ value = readl(&ctrl->control_pbias);
+ value &= ~(SDCARD_PWRDNZ | SDCARD_BIAS_PWRDNZ);
+ value |= SDCARD_BIAS_HIZ_MODE;
+ writel(value, &ctrl->control_pbias);
+
+ twl6035_mmc1_poweron_ldo();
+
+ value = readl(&ctrl->control_pbias);
+ value &= ~SDCARD_BIAS_HIZ_MODE;
+ value |= SDCARD_PBIASLITE_VMODE | SDCARD_PWRDNZ | SDCARD_BIAS_PWRDNZ;
+ writel(value, &ctrl->control_pbias);
+
+ value = readl(&ctrl->control_pbias);
+ if (value & (1 << 23)) {
+ value &= ~(SDCARD_PWRDNZ | SDCARD_BIAS_PWRDNZ);
+ value |= SDCARD_BIAS_HIZ_MODE;
+ writel(value, &ctrl->control_pbias);
+ }
+}
#endif
+unsigned char mmc_board_init(struct mmc *mmc)
+{
#if defined(CONFIG_OMAP34XX)
t2_t *t2_base = (t2_t *)T2_BASE;
struct prcm *prcm_base = (struct prcm *)PRCM_BASE;
+ u32 pbias_lite;
- writel(readl(&t2_base->pbias_lite) | PBIASLITEPWRDNZ1 |
+ pbias_lite = readl(&t2_base->pbias_lite);
+ pbias_lite &= ~(PBIASLITEPWRDNZ1 | PBIASLITEPWRDNZ0);
+ writel(pbias_lite, &t2_base->pbias_lite);
+#endif
+#if defined(CONFIG_TWL4030_POWER)
+ twl4030_power_mmc_init();
+ mdelay(100); /* ramp-up delay from Linux code */
+#endif
+#if defined(CONFIG_OMAP34XX)
+ writel(pbias_lite | PBIASLITEPWRDNZ1 |
PBIASSPEEDCTRL0 | PBIASLITEPWRDNZ0,
&t2_base->pbias_lite);
@@ -80,6 +119,11 @@ unsigned char mmc_board_init(struct mmc *mmc)
writel(readl(&t2_base->devconf1) | MMCSDIO2ADPCLKISEL,
&t2_base->devconf1);
+ /* Change from default of 52MHz to 26MHz if necessary */
+ if (!(mmc->host_caps & MMC_MODE_HS_52MHz))
+ writel(readl(&t2_base->ctl_prog_io1) & ~CTLPROGIO1SPEEDCTRL,
+ &t2_base->ctl_prog_io1);
+
writel(readl(&prcm_base->fclken1_core) |
EN_MMC1 | EN_MMC2 | EN_MMC3,
&prcm_base->fclken1_core);
@@ -94,6 +138,10 @@ unsigned char mmc_board_init(struct mmc *mmc)
if (mmc->block_dev.dev == 0)
omap4_vmmc_pbias_config(mmc);
#endif
+#if defined(CONFIG_OMAP54XX) && defined(CONFIG_TWL6035_POWER)
+ if (mmc->block_dev.dev == 0)
+ omap5_pbias_config(mmc);
+#endif
return 0;
}
@@ -189,6 +237,27 @@ static int mmc_init_setup(struct mmc *mmc)
return 0;
}
+/*
+ * MMC controller internal finite state machine reset
+ *
+ * Used to reset command or data internal state machines, using respectively
+ * SRC or SRD bit of SYSCTL register
+ */
+static void mmc_reset_controller_fsm(struct hsmmc *mmc_base, u32 bit)
+{
+ ulong start;
+
+ mmc_reg_out(&mmc_base->sysctl, bit, bit);
+
+ start = get_timer(0);
+ while ((readl(&mmc_base->sysctl) & bit) != 0) {
+ if (get_timer(0) - start > MAX_RETRY_MS) {
+ printf("%s: timedout waiting for sysctl %x to clear\n",
+ __func__, bit);
+ return;
+ }
+ }
+}
static int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
struct mmc_data *data)
@@ -209,7 +278,8 @@ static int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
start = get_timer(0);
while (readl(&mmc_base->stat)) {
if (get_timer(0) - start > MAX_RETRY_MS) {
- printf("%s: timedout waiting for stat!\n", __func__);
+ printf("%s: timedout waiting for STAT (%x) to clear\n",
+ __func__, readl(&mmc_base->stat));
return TIMEOUT;
}
}
@@ -277,9 +347,10 @@ static int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
}
} while (!mmc_stat);
- if ((mmc_stat & IE_CTO) != 0)
+ if ((mmc_stat & IE_CTO) != 0) {
+ mmc_reset_controller_fsm(mmc_base, SYSCTL_SRC);
return TIMEOUT;
- else if ((mmc_stat & ERRI_MASK) != 0)
+ } else if ((mmc_stat & ERRI_MASK) != 0)
return -1;
if (mmc_stat & CC_MASK) {
@@ -330,6 +401,9 @@ static int mmc_read_data(struct hsmmc *mmc_base, char *buf, unsigned int size)
}
} while (mmc_stat == 0);
+ if ((mmc_stat & (IE_DTO | IE_DCRC | IE_DEB)) != 0)
+ mmc_reset_controller_fsm(mmc_base, SYSCTL_SRD);
+
if ((mmc_stat & ERRI_MASK) != 0)
return 1;
@@ -382,6 +456,9 @@ static int mmc_write_data(struct hsmmc *mmc_base, const char *buf,
}
} while (mmc_stat == 0);
+ if ((mmc_stat & (IE_DTO | IE_DCRC | IE_DEB)) != 0)
+ mmc_reset_controller_fsm(mmc_base, SYSCTL_SRD);
+
if ((mmc_stat & ERRI_MASK) != 0)
return 1;
@@ -463,7 +540,7 @@ static void mmc_set_ios(struct mmc *mmc)
writel(readl(&mmc_base->sysctl) | CEN_ENABLE, &mmc_base->sysctl);
}
-int omap_mmc_init(int dev_index)
+int omap_mmc_init(int dev_index, uint host_caps_mask, uint f_max)
{
struct mmc *mmc;
@@ -494,11 +571,22 @@ int omap_mmc_init(int dev_index)
return 1;
}
mmc->voltages = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195;
- mmc->host_caps = MMC_MODE_4BIT | MMC_MODE_HS_52MHz | MMC_MODE_HS |
- MMC_MODE_HC;
+ mmc->host_caps = (MMC_MODE_4BIT | MMC_MODE_HS_52MHz | MMC_MODE_HS |
+ MMC_MODE_HC) & ~host_caps_mask;
mmc->f_min = 400000;
- mmc->f_max = 52000000;
+
+ if (f_max != 0)
+ mmc->f_max = f_max;
+ else {
+ if (mmc->host_caps & MMC_MODE_HS) {
+ if (mmc->host_caps & MMC_MODE_HS_52MHz)
+ mmc->f_max = 52000000;
+ else
+ mmc->f_max = 26000000;
+ } else
+ mmc->f_max = 20000000;
+ }
mmc->b_max = 0;
diff --git a/drivers/mmc/s5p_mmc.c b/drivers/mmc/s5p_mmc.c
deleted file mode 100644
index 4ae3aaf77..000000000
--- a/drivers/mmc/s5p_mmc.c
+++ /dev/null
@@ -1,490 +0,0 @@
-/*
- * (C) Copyright 2009 SAMSUNG Electronics
- * Minkyu Kang <mk7.kang@samsung.com>
- * Jaehoon Chung <jh80.chung@samsung.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include <common.h>
-#include <mmc.h>
-#include <asm/io.h>
-#include <asm/arch/mmc.h>
-#include <asm/arch/clk.h>
-
-/* support 4 mmc hosts */
-struct mmc mmc_dev[4];
-struct mmc_host mmc_host[4];
-
-static inline struct s5p_mmc *s5p_get_base_mmc(int dev_index)
-{
- unsigned long offset = dev_index * sizeof(struct s5p_mmc);
- return (struct s5p_mmc *)(samsung_get_base_mmc() + offset);
-}
-
-static void mmc_prepare_data(struct mmc_host *host, struct mmc_data *data)
-{
- unsigned char ctrl;
-
- debug("data->dest: %08x\n", (u32)data->dest);
- writel((u32)data->dest, &host->reg->sysad);
- /*
- * DMASEL[4:3]
- * 00 = Selects SDMA
- * 01 = Reserved
- * 10 = Selects 32-bit Address ADMA2
- * 11 = Selects 64-bit Address ADMA2
- */
- ctrl = readb(&host->reg->hostctl);
- ctrl &= ~(3 << 3);
- writeb(ctrl, &host->reg->hostctl);
-
- /* We do not handle DMA boundaries, so set it to max (512 KiB) */
- writew((7 << 12) | (data->blocksize & 0xFFF), &host->reg->blksize);
- writew(data->blocks, &host->reg->blkcnt);
-}
-
-static void mmc_set_transfer_mode(struct mmc_host *host, struct mmc_data *data)
-{
- unsigned short mode;
-
- /*
- * TRNMOD
- * MUL1SIN0[5] : Multi/Single Block Select
- * RD1WT0[4] : Data Transfer Direction Select
- * 1 = read
- * 0 = write
- * ENACMD12[2] : Auto CMD12 Enable
- * ENBLKCNT[1] : Block Count Enable
- * ENDMA[0] : DMA Enable
- */
- mode = (1 << 1) | (1 << 0);
- if (data->blocks > 1)
- mode |= (1 << 5);
- if (data->flags & MMC_DATA_READ)
- mode |= (1 << 4);
-
- writew(mode, &host->reg->trnmod);
-}
-
-static int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
- struct mmc_data *data)
-{
- struct mmc_host *host = (struct mmc_host *)mmc->priv;
- int flags, i;
- unsigned int timeout;
- unsigned int mask;
- unsigned int retry = 0x100000;
-
- /* Wait max 10 ms */
- timeout = 10;
-
- /*
- * PRNSTS
- * CMDINHDAT[1] : Command Inhibit (DAT)
- * CMDINHCMD[0] : Command Inhibit (CMD)
- */
- mask = (1 << 0);
- if ((data != NULL) || (cmd->resp_type & MMC_RSP_BUSY))
- mask |= (1 << 1);
-
- /*
- * We shouldn't wait for data inihibit for stop commands, even
- * though they might use busy signaling
- */
- if (data)
- mask &= ~(1 << 1);
-
- while (readl(&host->reg->prnsts) & mask) {
- if (timeout == 0) {
- printf("%s: timeout error\n", __func__);
- return -1;
- }
- timeout--;
- udelay(1000);
- }
-
- if (data)
- mmc_prepare_data(host, data);
-
- debug("cmd->arg: %08x\n", cmd->cmdarg);
- writel(cmd->cmdarg, &host->reg->argument);
-
- if (data)
- mmc_set_transfer_mode(host, data);
-
- if ((cmd->resp_type & MMC_RSP_136) && (cmd->resp_type & MMC_RSP_BUSY))
- return -1;
-
- /*
- * CMDREG
- * CMDIDX[13:8] : Command index
- * DATAPRNT[5] : Data Present Select
- * ENCMDIDX[4] : Command Index Check Enable
- * ENCMDCRC[3] : Command CRC Check Enable
- * RSPTYP[1:0]
- * 00 = No Response
- * 01 = Length 136
- * 10 = Length 48
- * 11 = Length 48 Check busy after response
- */
- if (!(cmd->resp_type & MMC_RSP_PRESENT))
- flags = 0;
- else if (cmd->resp_type & MMC_RSP_136)
- flags = (1 << 0);
- else if (cmd->resp_type & MMC_RSP_BUSY)
- flags = (3 << 0);
- else
- flags = (2 << 0);
-
- if (cmd->resp_type & MMC_RSP_CRC)
- flags |= (1 << 3);
- if (cmd->resp_type & MMC_RSP_OPCODE)
- flags |= (1 << 4);
- if (data)
- flags |= (1 << 5);
-
- debug("cmd: %d\n", cmd->cmdidx);
-
- writew((cmd->cmdidx << 8) | flags, &host->reg->cmdreg);
-
- for (i = 0; i < retry; i++) {
- mask = readl(&host->reg->norintsts);
- /* Command Complete */
- if (mask & (1 << 0)) {
- if (!data)
- writel(mask, &host->reg->norintsts);
- break;
- }
- }
-
- if (i == retry) {
- printf("%s: waiting for status update\n", __func__);
- return TIMEOUT;
- }
-
- if (mask & (1 << 16)) {
- /* Timeout Error */
- debug("timeout: %08x cmd %d\n", mask, cmd->cmdidx);
- return TIMEOUT;
- } else if (mask & (1 << 15)) {
- /* Error Interrupt */
- debug("error: %08x cmd %d\n", mask, cmd->cmdidx);
- return -1;
- }
-
- if (cmd->resp_type & MMC_RSP_PRESENT) {
- if (cmd->resp_type & MMC_RSP_136) {
- /* CRC is stripped so we need to do some shifting. */
- for (i = 0; i < 4; i++) {
- unsigned int offset =
- (unsigned int)(&host->reg->rspreg3 - i);
- cmd->response[i] = readl(offset) << 8;
-
- if (i != 3) {
- cmd->response[i] |=
- readb(offset - 1);
- }
- debug("cmd->resp[%d]: %08x\n",
- i, cmd->response[i]);
- }
- } else if (cmd->resp_type & MMC_RSP_BUSY) {
- for (i = 0; i < retry; i++) {
- /* PRNTDATA[23:20] : DAT[3:0] Line Signal */
- if (readl(&host->reg->prnsts)
- & (1 << 20)) /* DAT[0] */
- break;
- }
-
- if (i == retry) {
- printf("%s: card is still busy\n", __func__);
- return TIMEOUT;
- }
-
- cmd->response[0] = readl(&host->reg->rspreg0);
- debug("cmd->resp[0]: %08x\n", cmd->response[0]);
- } else {
- cmd->response[0] = readl(&host->reg->rspreg0);
- debug("cmd->resp[0]: %08x\n", cmd->response[0]);
- }
- }
-
- if (data) {
- while (1) {
- mask = readl(&host->reg->norintsts);
-
- if (mask & (1 << 15)) {
- /* Error Interrupt */
- writel(mask, &host->reg->norintsts);
- printf("%s: error during transfer: 0x%08x\n",
- __func__, mask);
- return -1;
- } else if (mask & (1 << 3)) {
- /*
- * DMA Interrupt, restart the transfer where
- * it was interrupted.
- */
- unsigned int address = readl(&host->reg->sysad);
-
- debug("DMA end\n");
- writel((1 << 3), &host->reg->norintsts);
- writel(address, &host->reg->sysad);
- } else if (mask & (1 << 1)) {
- /* Transfer Complete */
- debug("r/w is done\n");
- break;
- }
- }
- writel(mask, &host->reg->norintsts);
- }
-
- udelay(1000);
- return 0;
-}
-
-static void mmc_change_clock(struct mmc_host *host, uint clock)
-{
- int div;
- unsigned short clk;
- unsigned long timeout;
- unsigned long ctrl2;
-
- /*
- * SELBASECLK[5:4]
- * 00/01 = HCLK
- * 10 = EPLL
- * 11 = XTI or XEXTCLK
- */
- ctrl2 = readl(&host->reg->control2);
- ctrl2 &= ~(3 << 4);
- ctrl2 |= (2 << 4);
- writel(ctrl2, &host->reg->control2);
-
- writew(0, &host->reg->clkcon);
-
- /* XXX: we assume that clock is between 40MHz and 50MHz */
- if (clock == 0)
- goto out;
- else if (clock <= 400000)
- div = 0x100;
- else if (clock <= 20000000)
- div = 4;
- else if (clock <= 26000000)
- div = 2;
- else
- div = 1;
- debug("div: %d\n", div);
-
- div >>= 1;
- /*
- * CLKCON
- * SELFREQ[15:8] : base clock divied by value
- * ENSDCLK[2] : SD Clock Enable
- * STBLINTCLK[1] : Internal Clock Stable
- * ENINTCLK[0] : Internal Clock Enable
- */
- clk = (div << 8) | (1 << 0);
- writew(clk, &host->reg->clkcon);
-
- set_mmc_clk(host->dev_index, div);
-
- /* Wait max 10 ms */
- timeout = 10;
- while (!(readw(&host->reg->clkcon) & (1 << 1))) {
- if (timeout == 0) {
- printf("%s: timeout error\n", __func__);
- return;
- }
- timeout--;
- udelay(1000);
- }
-
- clk |= (1 << 2);
- writew(clk, &host->reg->clkcon);
-
-out:
- host->clock = clock;
-}
-
-static void mmc_set_ios(struct mmc *mmc)
-{
- struct mmc_host *host = mmc->priv;
- unsigned char ctrl;
- unsigned long val;
-
- debug("bus_width: %x, clock: %d\n", mmc->bus_width, mmc->clock);
-
- /*
- * SELCLKPADDS[17:16]
- * 00 = 2mA
- * 01 = 4mA
- * 10 = 7mA
- * 11 = 9mA
- */
- writel(0x3 << 16, &host->reg->control4);
-
- val = readl(&host->reg->control2);
- val &= (0x3 << 4);
-
- val |= (1 << 31) | /* write status clear async mode enable */
- (1 << 30) | /* command conflict mask enable */
- (1 << 14) | /* Feedback Clock Enable for Rx Clock */
- (1 << 8); /* SDCLK hold enable */
-
- writel(val, &host->reg->control2);
-
- /*
- * FCSEL1[15] FCSEL0[7]
- * FCSel[1:0] : Rx Feedback Clock Delay Control
- * Inverter delay means10ns delay if SDCLK 50MHz setting
- * 01 = Delay1 (basic delay)
- * 11 = Delay2 (basic delay + 2ns)
- * 00 = Delay3 (inverter delay)
- * 10 = Delay4 (inverter delay + 2ns)
- */
- writel(0x8080, &host->reg->control3);
-
- mmc_change_clock(host, mmc->clock);
-
- ctrl = readb(&host->reg->hostctl);
-
- /*
- * WIDE8[5]
- * 0 = Depend on WIDE4
- * 1 = 8-bit mode
- * WIDE4[1]
- * 1 = 4-bit mode
- * 0 = 1-bit mode
- */
- if (mmc->bus_width == 8)
- ctrl |= (1 << 5);
- else if (mmc->bus_width == 4)
- ctrl |= (1 << 1);
- else
- ctrl &= ~(1 << 1);
-
- /*
- * OUTEDGEINV[2]
- * 1 = Riging edge output
- * 0 = Falling edge output
- */
- ctrl &= ~(1 << 2);
-
- writeb(ctrl, &host->reg->hostctl);
-}
-
-static void mmc_reset(struct mmc_host *host)
-{
- unsigned int timeout;
-
- /*
- * RSTALL[0] : Software reset for all
- * 1 = reset
- * 0 = work
- */
- writeb((1 << 0), &host->reg->swrst);
-
- host->clock = 0;
-
- /* Wait max 100 ms */
- timeout = 100;
-
- /* hw clears the bit when it's done */
- while (readb(&host->reg->swrst) & (1 << 0)) {
- if (timeout == 0) {
- printf("%s: timeout error\n", __func__);
- return;
- }
- timeout--;
- udelay(1000);
- }
-}
-
-static int mmc_core_init(struct mmc *mmc)
-{
- struct mmc_host *host = (struct mmc_host *)mmc->priv;
- unsigned int mask;
-
- mmc_reset(host);
-
- host->version = readw(&host->reg->hcver);
-
- /* mask all */
- writel(0xffffffff, &host->reg->norintstsen);
- writel(0xffffffff, &host->reg->norintsigen);
-
- writeb(0xe, &host->reg->timeoutcon); /* TMCLK * 2^27 */
-
- /*
- * NORMAL Interrupt Status Enable Register init
- * [5] ENSTABUFRDRDY : Buffer Read Ready Status Enable
- * [4] ENSTABUFWTRDY : Buffer write Ready Status Enable
- * [3] ENSTADMAINT : DMA Interrupt Status Enable
- * [1] ENSTASTANSCMPLT : Transfre Complete Status Enable
- * [0] ENSTACMDCMPLT : Command Complete Status Enable
- */
- mask = readl(&host->reg->norintstsen);
- mask &= ~(0xffff);
- mask |= (1 << 5) | (1 << 4) | (1 << 3) | (1 << 1) | (1 << 0);
- writel(mask, &host->reg->norintstsen);
-
- /*
- * NORMAL Interrupt Signal Enable Register init
- * [1] ENSTACMDCMPLT : Transfer Complete Signal Enable
- */
- mask = readl(&host->reg->norintsigen);
- mask &= ~(0xffff);
- mask |= (1 << 1);
- writel(mask, &host->reg->norintsigen);
-
- return 0;
-}
-
-static int s5p_mmc_initialize(int dev_index, int bus_width)
-{
- struct mmc *mmc;
-
- mmc = &mmc_dev[dev_index];
-
- sprintf(mmc->name, "SAMSUNG SD/MMC");
- mmc->priv = &mmc_host[dev_index];
- mmc->send_cmd = mmc_send_cmd;
- mmc->set_ios = mmc_set_ios;
- mmc->init = mmc_core_init;
- mmc->getcd = NULL;
-
- mmc->voltages = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195;
- if (bus_width == 8)
- mmc->host_caps = MMC_MODE_8BIT;
- else
- mmc->host_caps = MMC_MODE_4BIT;
- mmc->host_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS | MMC_MODE_HC;
-
- mmc->f_min = 400000;
- mmc->f_max = 52000000;
-
- mmc_host[dev_index].dev_index = dev_index;
- mmc_host[dev_index].clock = 0;
- mmc_host[dev_index].reg = s5p_get_base_mmc(dev_index);
- mmc->b_max = 0;
- mmc_register(mmc);
-
- return 0;
-}
-
-int s5p_mmc_init(int dev_index, int bus_width)
-{
- return s5p_mmc_initialize(dev_index, bus_width);
-}
diff --git a/drivers/mmc/s5p_sdhci.c b/drivers/mmc/s5p_sdhci.c
new file mode 100644
index 000000000..1d4481b97
--- /dev/null
+++ b/drivers/mmc/s5p_sdhci.c
@@ -0,0 +1,98 @@
+/*
+ * (C) Copyright 2012 SAMSUNG Electronics
+ * Jaehoon Chung <jh80.chung@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <malloc.h>
+#include <sdhci.h>
+#include <asm/arch/mmc.h>
+
+static char *S5P_NAME = "SAMSUNG SDHCI";
+static void s5p_sdhci_set_control_reg(struct sdhci_host *host)
+{
+ unsigned long val, ctrl;
+ /*
+ * SELCLKPADDS[17:16]
+ * 00 = 2mA
+ * 01 = 4mA
+ * 10 = 7mA
+ * 11 = 9mA
+ */
+ sdhci_writel(host, SDHCI_CTRL4_DRIVE_MASK(0x3), SDHCI_CONTROL4);
+
+ val = sdhci_readl(host, SDHCI_CONTROL2);
+ val &= SDHCI_CTRL2_SELBASECLK_SHIFT;
+
+ val |= SDHCI_CTRL2_ENSTAASYNCCLR |
+ SDHCI_CTRL2_ENCMDCNFMSK |
+ SDHCI_CTRL2_ENFBCLKRX |
+ SDHCI_CTRL2_ENCLKOUTHOLD;
+
+ sdhci_writel(host, val, SDHCI_CONTROL2);
+
+ /*
+ * FCSEL3[31] FCSEL2[23] FCSEL1[15] FCSEL0[7]
+ * FCSel[1:0] : Rx Feedback Clock Delay Control
+ * Inverter delay means10ns delay if SDCLK 50MHz setting
+ * 01 = Delay1 (basic delay)
+ * 11 = Delay2 (basic delay + 2ns)
+ * 00 = Delay3 (inverter delay)
+ * 10 = Delay4 (inverter delay + 2ns)
+ */
+ val = SDHCI_CTRL3_FCSEL3 | SDHCI_CTRL3_FCSEL1;
+ sdhci_writel(host, val, SDHCI_CONTROL3);
+
+ /*
+ * SELBASECLK[5:4]
+ * 00/01 = HCLK
+ * 10 = EPLL
+ * 11 = XTI or XEXTCLK
+ */
+ ctrl = sdhci_readl(host, SDHCI_CONTROL2);
+ ctrl &= ~SDHCI_CTRL2_SELBASECLK_MASK(0x3);
+ ctrl |= SDHCI_CTRL2_SELBASECLK_MASK(0x2);
+ sdhci_writel(host, ctrl, SDHCI_CONTROL2);
+}
+
+int s5p_sdhci_init(u32 regbase, u32 max_clk, u32 min_clk, u32 quirks)
+{
+ struct sdhci_host *host = NULL;
+ host = (struct sdhci_host *)malloc(sizeof(struct sdhci_host));
+ if (!host) {
+ printf("sdhci__host malloc fail!\n");
+ return 1;
+ }
+
+ host->name = S5P_NAME;
+ host->ioaddr = (void *)regbase;
+ host->quirks = quirks;
+
+ host->quirks |= SDHCI_QUIRK_NO_HISPD_BIT | SDHCI_QUIRK_BROKEN_VOLTAGE;
+ host->voltages = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195;
+ if (quirks & SDHCI_QUIRK_REG32_RW)
+ host->version = sdhci_readl(host, SDHCI_HOST_VERSION - 2) >> 16;
+ else
+ host->version = sdhci_readw(host, SDHCI_HOST_VERSION);
+
+ host->set_control_reg = &s5p_sdhci_set_control_reg;
+
+ host->host_caps = MMC_MODE_HC;
+
+ add_sdhci(host, max_clk, min_clk);
+ return 0;
+}
diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c
index fc904b530..1709643da 100644
--- a/drivers/mmc/sdhci.c
+++ b/drivers/mmc/sdhci.c
@@ -128,6 +128,7 @@ int sdhci_send_command(struct mmc *mmc, struct mmc_cmd *cmd,
int trans_bytes = 0, is_aligned = 1;
u32 mask, flags, mode;
unsigned int timeout, start_addr = 0;
+ unsigned int retry = 10000;
/* Wait max 10 ms */
timeout = 10;
@@ -210,8 +211,19 @@ int sdhci_send_command(struct mmc *mmc, struct mmc_cmd *cmd,
stat = sdhci_readl(host, SDHCI_INT_STATUS);
if (stat & SDHCI_INT_ERROR)
break;
+ if (--retry == 0)
+ break;
} while ((stat & mask) != mask);
+ if (retry == 0) {
+ if (host->quirks & SDHCI_QUIRK_BROKEN_R1B)
+ return 0;
+ else {
+ printf("Timeout for status update!\n");
+ return TIMEOUT;
+ }
+ }
+
if ((stat & (SDHCI_INT_ERROR | mask)) == mask) {
sdhci_cmd_done(host, cmd);
sdhci_writel(host, mask, SDHCI_INT_STATUS);
@@ -325,6 +337,9 @@ void sdhci_set_ios(struct mmc *mmc)
u32 ctrl;
struct sdhci_host *host = (struct sdhci_host *)mmc->priv;
+ if (host->set_control_reg)
+ host->set_control_reg(host);
+
if (mmc->clock != host->clock)
sdhci_set_clock(mmc, mmc->clock);
@@ -348,6 +363,9 @@ void sdhci_set_ios(struct mmc *mmc)
else
ctrl &= ~SDHCI_CTRL_HISPD;
+ if (host->quirks & SDHCI_QUIRK_NO_HISPD_BIT)
+ ctrl &= ~SDHCI_CTRL_HISPD;
+
sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
}
@@ -431,9 +449,15 @@ int add_sdhci(struct sdhci_host *host, u32 max_clk, u32 min_clk)
mmc->voltages |= MMC_VDD_29_30 | MMC_VDD_30_31;
if (caps & SDHCI_CAN_VDD_180)
mmc->voltages |= MMC_VDD_165_195;
+
+ if (host->quirks & SDHCI_QUIRK_BROKEN_VOLTAGE)
+ mmc->voltages |= host->voltages;
+
mmc->host_caps = MMC_MODE_HS | MMC_MODE_HS_52MHz | MMC_MODE_4BIT;
if (caps & SDHCI_CAN_DO_8BIT)
mmc->host_caps |= MMC_MODE_8BIT;
+ if (host->host_caps)
+ mmc->host_caps |= host->host_caps;
sdhci_reset(host, SDHCI_RESET_ALL);
mmc_register(mmc);
generated by cgit v1.2.3-70-g09d2 (git 2.51.2) at 2025-11-04 09:34:20 +0000