From 2b0dd4174f36e1f57f32116e44cb6e0e84fb2c67 Mon Sep 17 00:00:00 2001 From: Kunihiko Hayashi Date: Fri, 9 Sep 2022 16:23:32 +0900 Subject: [PATCH] mmc: sdhci: Add new quirks for SUPPORT_SINGLE 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 Reviewed-by: Jaehoon Chung --- drivers/mmc/sdhci.c | 8 +++++--- include/sdhci.h | 1 + 2 files changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c index bf989a5..a80ad83 100644 --- a/drivers/mmc/sdhci.c +++ b/drivers/mmc/sdhci.c @@ -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); - mode = SDHCI_TRNS_BLK_CNT_EN; + + 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; diff --git a/include/sdhci.h b/include/sdhci.h index 88f1917..24b4599 100644 --- a/include/sdhci.h +++ b/include/sdhci.h @@ -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; -- 2.7.4