This patch is added quirks for data timeout value.
Some card have problem when suspend/resume.
CMD6(switch command) to switch the bus to high speed mode
and to set the bus width.
After resuming, the card was initialized...in that time, some
card need set a correct timeout value.
so we add SDHCI_QUIRK_SET_DATA_TIMEOUT_VAL.
Let me know any comment, plz.
Signed-off-by: Jaehoon Chung <jh80.ch...@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.p...@samsung.com>
---
drivers/mmc/host/sdhci.c | 6 +++++-
include/linux/mmc/sdhci.h | 3 ++-
2 files changed, 7 insertions(+), 2 deletions(-)
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 782c0ee..3b93d97 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -655,8 +655,12 @@ static void sdhci_prepare_data(struct sdhci_host *host,
struct mmc_data *data)
WARN_ON(host->data);
- if (data == NULL)
+ if (data == NULL) {
+ if ((host->quirks & SDHCI_QUIRK_SET_DATA_TIMEOUT_VAL) &&
+ (host->cmd->flags & MMC_RSP_BUSY))
+ sdhci_writel(host, 0xE, SDHCI_TIMEOUT_CONTROL);
return;
+ }
/* Sanity checks */
BUG_ON(data->blksz * data->blocks > 524288);
diff --git a/include/linux/mmc/sdhci.h b/include/linux/mmc/sdhci.h
index 1fdc673..315ff49 100644
--- a/include/linux/mmc/sdhci.h
+++ b/include/linux/mmc/sdhci.h
@@ -83,7 +83,8 @@ struct sdhci_host {
#define SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12 (1<<28)
/* Controller doesn't have HISPD bit field in HI-SPEED SD card */
#define SDHCI_QUIRK_NO_HISPD_BIT (1<<29)
-
+/* Controller need set data timeout value when card is busy */
+#define SDHCI_QUIRK_SET_DATA_TIMEOUT_VAL (1<<30)
int irq; /* Device IRQ */
void __iomem *ioaddr; /* Mapped address */
--
1.6.0.4
Thanks
Jaehoon Chung
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