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-rw-r--r--drivers/mmc/arm_pl180_mmci.c131
-rw-r--r--drivers/mmc/arm_pl180_mmci.h27
2 files changed, 75 insertions, 83 deletions
diff --git a/drivers/mmc/arm_pl180_mmci.c b/drivers/mmc/arm_pl180_mmci.c
index 09d443ee3..db2c7ab75 100644
--- a/drivers/mmc/arm_pl180_mmci.c
+++ b/drivers/mmc/arm_pl180_mmci.c
@@ -32,14 +32,10 @@
#include "arm_pl180_mmci.h"
#include <malloc.h>
-struct mmc_host {
- struct sdi_registers *base;
-};
-
static int wait_for_command_end(struct mmc *dev, struct mmc_cmd *cmd)
{
u32 hoststatus, statusmask;
- struct mmc_host *host = dev->priv;
+ struct pl180_mmc_host *host = dev->priv;
statusmask = SDI_STA_CTIMEOUT | SDI_STA_CCRCFAIL;
if ((cmd->resp_type & MMC_RSP_PRESENT))
@@ -53,8 +49,8 @@ static int wait_for_command_end(struct mmc *dev, struct mmc_cmd *cmd)
writel(statusmask, &host->base->status_clear);
if (hoststatus & SDI_STA_CTIMEOUT) {
- printf("CMD%d time out\n", cmd->cmdidx);
- return -ETIMEDOUT;
+ debug("CMD%d time out\n", cmd->cmdidx);
+ return TIMEOUT;
} else if ((hoststatus & SDI_STA_CCRCFAIL) &&
(cmd->flags & MMC_RSP_CRC)) {
printf("CMD%d CRC error\n", cmd->cmdidx);
@@ -80,7 +76,7 @@ static int do_command(struct mmc *dev, struct mmc_cmd *cmd)
{
int result;
u32 sdi_cmd = 0;
- struct mmc_host *host = dev->priv;
+ struct pl180_mmc_host *host = dev->priv;
sdi_cmd = ((cmd->cmdidx & SDI_CMD_CMDINDEX_MASK) | SDI_CMD_CPSMEN);
@@ -112,7 +108,7 @@ static int read_bytes(struct mmc *dev, u32 *dest, u32 blkcount, u32 blksize)
{
u32 *tempbuff = dest;
u64 xfercount = blkcount * blksize;
- struct mmc_host *host = dev->priv;
+ struct pl180_mmc_host *host = dev->priv;
u32 status, status_err;
debug("read_bytes: blkcount=%u blksize=%u\n", blkcount, blksize);
@@ -168,7 +164,7 @@ static int write_bytes(struct mmc *dev, u32 *src, u32 blkcount, u32 blksize)
u32 *tempbuff = src;
int i;
u64 xfercount = blkcount * blksize;
- struct mmc_host *host = dev->priv;
+ struct pl180_mmc_host *host = dev->priv;
u32 status, status_err;
debug("write_bytes: blkcount=%u blksize=%u\n", blkcount, blksize);
@@ -227,14 +223,19 @@ static int do_data_transfer(struct mmc *dev,
struct mmc_data *data)
{
int error = -ETIMEDOUT;
- struct mmc_host *host = dev->priv;
+ struct pl180_mmc_host *host = dev->priv;
u32 blksz = 0;
u32 data_ctrl = 0;
u32 data_len = (u32) (data->blocks * data->blocksize);
- blksz = (ffs(data->blocksize) - 1);
- data_ctrl |= ((blksz << 4) & SDI_DCTRL_DBLKSIZE_MASK);
- data_ctrl |= SDI_DCTRL_DTEN;
+ if (!host->version2) {
+ blksz = (ffs(data->blocksize) - 1);
+ data_ctrl |= ((blksz << 4) & SDI_DCTRL_DBLKSIZE_MASK);
+ } else {
+ blksz = data->blocksize;
+ data_ctrl |= (blksz << SDI_DCTRL_DBLOCKSIZE_V2_SHIFT);
+ }
+ data_ctrl |= SDI_DCTRL_DTEN | SDI_DCTRL_BUSYMODE;
writel(SDI_DTIMER_DEFAULT, &host->base->datatimer);
writel(data_len, &host->base->datalength);
@@ -257,7 +258,7 @@ static int do_data_transfer(struct mmc *dev,
writel(data_ctrl, &host->base->datactrl);
error = write_bytes(dev, (u32 *)data->src, (u32)data->blocks,
- (u32)data->blocksize);
+ (u32)data->blocksize);
}
return error;
@@ -280,17 +281,16 @@ static int host_request(struct mmc *dev,
/* MMC uses open drain drivers in the enumeration phase */
static int mmc_host_reset(struct mmc *dev)
{
- struct mmc_host *host = dev->priv;
- u32 sdi_u32 = SDI_PWR_OPD | SDI_PWR_PWRCTRL_ON;
+ struct pl180_mmc_host *host = dev->priv;
- writel(sdi_u32, &host->base->power);
+ writel(host->pwr_init, &host->base->power);
return 0;
}
static void host_set_ios(struct mmc *dev)
{
- struct mmc_host *host = dev->priv;
+ struct pl180_mmc_host *host = dev->priv;
u32 sdi_clkcr;
sdi_clkcr = readl(&host->base->clock);
@@ -298,15 +298,26 @@ static void host_set_ios(struct mmc *dev)
/* Ramp up the clock rate */
if (dev->clock) {
u32 clkdiv = 0;
+ u32 tmp_clock;
- if (dev->clock >= dev->f_max)
+ if (dev->clock >= dev->f_max) {
+ clkdiv = 0;
dev->clock = dev->f_max;
+ } else {
+ clkdiv = (host->clock_in / dev->clock) - 2;
+ }
- clkdiv = ((ARM_MCLK / dev->clock) / 2) - 1;
+ tmp_clock = host->clock_in / (clkdiv + 2);
+ while (tmp_clock > dev->clock) {
+ clkdiv++;
+ tmp_clock = host->clock_in / (clkdiv + 2);
+ }
if (clkdiv > SDI_CLKCR_CLKDIV_MASK)
clkdiv = SDI_CLKCR_CLKDIV_MASK;
+ tmp_clock = host->clock_in / (clkdiv + 2);
+ dev->clock = tmp_clock;
sdi_clkcr &= ~(SDI_CLKCR_CLKDIV_MASK);
sdi_clkcr |= clkdiv;
}
@@ -322,8 +333,11 @@ static void host_set_ios(struct mmc *dev)
case 4:
buswidth |= SDI_CLKCR_WIDBUS_4;
break;
+ case 8:
+ buswidth |= SDI_CLKCR_WIDBUS_8;
+ break;
default:
- printf("Invalid bus width\n");
+ printf("Invalid bus width: %d\n", dev->bus_width);
break;
}
sdi_clkcr &= ~(SDI_CLKCR_WIDBUS_MASK);
@@ -334,83 +348,40 @@ static void host_set_ios(struct mmc *dev)
udelay(CLK_CHANGE_DELAY);
}
-struct mmc *alloc_mmc_struct(void)
-{
- struct mmc_host *host = NULL;
- struct mmc *mmc_device = NULL;
-
- host = malloc(sizeof(struct mmc_host));
- if (!host)
- return NULL;
-
- mmc_device = malloc(sizeof(struct mmc));
- if (!mmc_device)
- goto err;
-
- mmc_device->priv = host;
- return mmc_device;
-
-err:
- free(host);
- return NULL;
-}
-
/*
* mmc_host_init - initialize the mmc controller.
* Set initial clock and power for mmc slot.
* Initialize mmc struct and register with mmc framework.
*/
-static int arm_pl180_mmci_host_init(struct mmc *dev)
+int arm_pl180_mmci_init(struct pl180_mmc_host *host)
{
- struct mmc_host *host = dev->priv;
+ struct mmc *dev;
u32 sdi_u32;
- host->base = (struct sdi_registers *)CONFIG_ARM_PL180_MMCI_BASE;
+ dev = malloc(sizeof(struct mmc));
+ if (!dev)
+ return -ENOMEM;
- /* Initially set power-on, full voltage & MMCI read */
- sdi_u32 = INIT_PWR;
- writel(sdi_u32, &host->base->power);
+ memset(dev, 0, sizeof(struct mmc));
+ dev->priv = host;
- /* setting clk freq 505KHz */
- sdi_u32 = SDI_CLKCR_CLKDIV_INIT | SDI_CLKCR_CLKEN;
- writel(sdi_u32, &host->base->clock);
+ writel(host->pwr_init, &host->base->power);
+ writel(host->clkdiv_init, &host->base->clock);
udelay(CLK_CHANGE_DELAY);
/* Disable mmc interrupts */
sdi_u32 = readl(&host->base->mask0) & ~SDI_MASK0_MASK;
writel(sdi_u32, &host->base->mask0);
-
- sprintf(dev->name, "MMC");
- dev->clock = ARM_MCLK / (2 * (SDI_CLKCR_CLKDIV_INIT + 1));
+ strncpy(dev->name, host->name, sizeof(dev->name));
dev->send_cmd = host_request;
dev->set_ios = host_set_ios;
dev->init = mmc_host_reset;
dev->getcd = NULL;
- dev->host_caps = 0;
- dev->voltages = VOLTAGE_WINDOW_MMC;
- dev->f_min = dev->clock;
- dev->f_max = CONFIG_ARM_PL180_MMCI_CLOCK_FREQ;
-
- return 0;
-}
-
-int arm_pl180_mmci_init(void)
-{
- int error;
- struct mmc *dev;
-
- dev = alloc_mmc_struct();
- if (!dev)
- return -1;
-
- error = arm_pl180_mmci_host_init(dev);
- if (error) {
- printf("mmci_host_init error - %d\n", error);
- return -1;
- }
-
- dev->b_max = 0;
-
+ dev->host_caps = host->caps;
+ dev->voltages = host->voltages;
+ dev->f_min = host->clock_min;
+ dev->f_max = host->clock_max;
+ dev->b_max = host->b_max;
mmc_register(dev);
debug("registered mmc interface number is:%d\n", dev->block_dev.dev);
diff --git a/drivers/mmc/arm_pl180_mmci.h b/drivers/mmc/arm_pl180_mmci.h
index 42fbe3e38..06709ed7f 100644
--- a/drivers/mmc/arm_pl180_mmci.h
+++ b/drivers/mmc/arm_pl180_mmci.h
@@ -26,8 +26,6 @@
#ifndef __ARM_PL180_MMCI_H__
#define __ARM_PL180_MMCI_H__
-int arm_pl180_mmci_init(void);
-
#define COMMAND_REG_DELAY 300
#define DATA_REG_DELAY 1000
#define CLK_CHANGE_DELAY 2000
@@ -59,8 +57,13 @@ int arm_pl180_mmci_init(void);
#define SDI_CLKCR_WIDBUS_MASK 0x00001800
#define SDI_CLKCR_WIDBUS_1 0x00000000
#define SDI_CLKCR_WIDBUS_4 0x00000800
+/* V2 only */
+#define SDI_CLKCR_WIDBUS_8 0x00001000
+#define SDI_CLKCR_NEDGE 0x00002000
+#define SDI_CLKCR_HWFC_EN 0x00004000
-#define SDI_CLKCR_CLKDIV_INIT 0x000000C6 /* MCLK/(2*(0xC6+1)) => 505KHz */
+#define SDI_CLKCR_CLKDIV_INIT_V1 0x000000C6 /* MCLK/(2*(0xC6+1)) => 505KHz */
+#define SDI_CLKCR_CLKDIV_INIT_V2 0x000000FD
/* SDI command register bits */
#define SDI_CMD_CMDINDEX_MASK 0x000000FF
@@ -144,6 +147,8 @@ int arm_pl180_mmci_init(void);
#define SDI_DCTRL_DBOOTMODEEN 0x00002000
#define SDI_DCTRL_BUSYMODE 0x00004000
#define SDI_DCTRL_DDR_MODE 0x00008000
+#define SDI_DCTRL_DBLOCKSIZE_V2_MASK 0x7fff0000
+#define SDI_DCTRL_DBLOCKSIZE_V2_SHIFT 16
#define SDI_FIFO_BURST_SIZE 8
@@ -180,4 +185,20 @@ struct sdi_registers {
u32 pcell_id3; /* 0xFFC*/
};
+struct pl180_mmc_host {
+ struct sdi_registers *base;
+ char name[32];
+ unsigned int b_max;
+ unsigned int voltages;
+ unsigned int caps;
+ unsigned int clock_in;
+ unsigned int clock_min;
+ unsigned int clock_max;
+ unsigned int clkdiv_init;
+ unsigned int pwr_init;
+ int version2;
+};
+
+int arm_pl180_mmci_init(struct pl180_mmc_host *);
+
#endif
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-26 17:32:35 +0000