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mmc: sdhci: Add new quirks for SUPPORT_SINGLE

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This patch defines a quirk to disable the block count
for single block transactions.

This is similar to Linux kernel commit d3fc5d71ac4d
("mmc: sdhci: add a quirk for single block transactions").

Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
This commit is contained in:
Kunihiko Hayashi 2022-09-09 16:23:32 +09:00 committed by Jaehoon Chung
parent fc6b5d8260
commit 2b0dd4174f
2 changed files with 6 additions and 3 deletions
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6
drivers/mmc/sdhci.c
View File

@ -211,7 +211,7 @@ static int sdhci_send_command(struct mmc *mmc, struct mmc_cmd *cmd,
unsigned int stat = 0;
int ret = 0;
int trans_bytes = 0, is_aligned = 1;
u32 mask, flags, mode;
u32 mask, flags, mode = 0;
unsigned int time = 0;
int mmc_dev = mmc_get_blk_desc(mmc)->devnum;
ulong start = get_timer(0);
@ -273,10 +273,12 @@ static int sdhci_send_command(struct mmc *mmc, struct mmc_cmd *cmd,
/* Set Transfer mode regarding to data flag */
if (data) {
sdhci_writeb(host, 0xe, SDHCI_TIMEOUT_CONTROL);
if (!(host->quirks & SDHCI_QUIRK_SUPPORT_SINGLE))
mode = SDHCI_TRNS_BLK_CNT_EN;
trans_bytes = data->blocks * data->blocksize;
if (data->blocks > 1)
mode |= SDHCI_TRNS_MULTI;
mode |= SDHCI_TRNS_MULTI | SDHCI_TRNS_BLK_CNT_EN;
if (data->flags == MMC_DATA_READ)
mode |= SDHCI_TRNS_READ;

1
include/sdhci.h
View File

@ -247,6 +247,7 @@
#define SDHCI_QUIRK_WAIT_SEND_CMD (1 << 6)
#define SDHCI_QUIRK_USE_WIDE8 (1 << 8)
#define SDHCI_QUIRK_NO_1_8_V (1 << 9)
#define SDHCI_QUIRK_SUPPORT_SINGLE (1 << 10)
/* to make gcc happy */
struct sdhci_host;