CMD6 is R1B-type command, where DAT is used as busy. Depending
on register written using CMD6, timeout value can be different
as per spec.
Signed-off-by: Andrei Warkentin <andreiw@xxxxxxxxxxxx>
---
drivers/mmc/core/mmc.c | 14 ++++++++------
drivers/mmc/core/mmc_ops.c | 17 ++++++++++++++++-
drivers/mmc/core/mmc_ops.h | 1 -
include/linux/mmc/core.h | 1 +
4 files changed, 25 insertions(+), 8 deletions(-)
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
index caba751..a5cf423 100644
--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c
@@ -548,7 +548,7 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
*/
if (card->ext_csd.enhanced_area_en) {
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
- EXT_CSD_ERASE_GROUP_DEF, 1);
+ EXT_CSD_ERASE_GROUP_DEF, 1, 0);
if (err && err != -EBADMSG)
goto free_card;
@@ -579,7 +579,7 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
if (card->ext_csd.bootconfig & 0x7) {
card->ext_csd.bootconfig &= ~0x7;
mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BOOT_CONFIG,
- card->ext_csd.bootconfig);
+ card->ext_csd.bootconfig, 0);
}
/*
@@ -588,7 +588,7 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
if ((card->ext_csd.hs_max_dtr != 0) &&
(host->caps & MMC_CAP_MMC_HIGHSPEED)) {
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
- EXT_CSD_HS_TIMING, 1);
+ EXT_CSD_HS_TIMING, 1, 0);
if (err && err != -EBADMSG)
goto free_card;
@@ -655,7 +655,8 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
ddr = 0; /* no DDR for 1-bit width */
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_BUS_WIDTH,
- ext_csd_bits[idx][0]);
+ ext_csd_bits[idx][0],
+ 0);
if (!err) {
mmc_set_bus_width_ddr(card->host,
bus_width, MMC_SDR_MODE);
@@ -674,8 +675,9 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
if (!err && ddr) {
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
- EXT_CSD_BUS_WIDTH,
- ext_csd_bits[idx][1]);
+ EXT_CSD_BUS_WIDTH,
+ ext_csd_bits[idx][1],
+ 0);
}
if (err) {
printk(KERN_WARNING "%s: switch to bus width %d ddr %d "
diff --git a/drivers/mmc/core/mmc_ops.c b/drivers/mmc/core/mmc_ops.c
index 60842f8..8b0d62e 100644
--- a/drivers/mmc/core/mmc_ops.c
+++ b/drivers/mmc/core/mmc_ops.c
@@ -387,7 +387,19 @@ int mmc_spi_set_crc(struct mmc_host *host, int use_crc)
return err;
}
-int mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value)
+/**
+ * mmc_switch - modify EXT_CSD register
+ * @card: the MMC card associated with the data transfer
+ * @set: cmd set values
+ * @index: EXT_CSD register index
+ * @value: value to program into EXT_CSD register
+ * @timeout: timeout for operation performed by register write,
+ * timeout of zero implies maximum possible timeout
+ *
+ * Modifies the EXT_CSD register for selected card.
+ */
+int mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value,
+ unsigned int timeout)
{
int err;
struct mmc_command cmd;
@@ -404,6 +416,7 @@ int mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value)
(value << 8) |
set;
cmd.flags = MMC_RSP_SPI_R1B | MMC_RSP_R1B | MMC_CMD_AC;
+ cmd.cmd_timeout = timeout;
err = mmc_wait_for_cmd(card->host, &cmd, MMC_CMD_RETRIES);
if (err)
@@ -434,6 +447,8 @@ int mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value)
return 0;
}
+EXPORT_SYMBOL(mmc_switch);
+
int mmc_send_status(struct mmc_card *card, u32 *status)
{
int err;
diff --git a/drivers/mmc/core/mmc_ops.h b/drivers/mmc/core/mmc_ops.h
index e6d44b8..9276946 100644
--- a/drivers/mmc/core/mmc_ops.h
+++ b/drivers/mmc/core/mmc_ops.h
@@ -20,7 +20,6 @@ int mmc_all_send_cid(struct mmc_host *host, u32 *cid);
int mmc_set_relative_addr(struct mmc_card *card);
int mmc_send_csd(struct mmc_card *card, u32 *csd);
int mmc_send_ext_csd(struct mmc_card *card, u8 *ext_csd);
-int mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value);
int mmc_send_status(struct mmc_card *card, u32 *status);
int mmc_send_cid(struct mmc_host *host, u32 *cid);
int mmc_spi_read_ocr(struct mmc_host *host, int highcap, u32 *ocrp);
diff --git a/include/linux/mmc/core.h b/include/linux/mmc/core.h
index a7d7da7..6d4f3df 100644
--- a/include/linux/mmc/core.h
+++ b/include/linux/mmc/core.h
@@ -135,6 +135,7 @@ extern void mmc_wait_for_req(struct mmc_host *, struct mmc_request *);
extern int mmc_wait_for_cmd(struct mmc_host *, struct mmc_command *, int);
extern int mmc_wait_for_app_cmd(struct mmc_host *, struct mmc_card *,
struct mmc_command *, int);
+extern int mmc_switch(struct mmc_card *, u8, u8, u8, unsigned int);
#define MMC_ERASE_ARG 0x00000000
#define MMC_SECURE_ERASE_ARG 0x80000000
--
1.7.0.4
--
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