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mmc: renesas_sdhi: Add a condition of cmd/data timeout for retune

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According to the datasheet, this controller needs retune when
cmd or data timeout happens. So, add a condition into .check_retune().

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/1608708622-29668-3-git-send-email-yoshihiro.shimoda.uh@renesas.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Yoshihiro Shimoda 2020-12-23 16:30:22 +09:00 committed by Ulf Hansson
parent 35cdcd1268
commit ed2fab9a82
3 changed files with 15 additions and 5 deletions
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16
drivers/mmc/host/renesas_sdhi_core.c
View File

@ -768,10 +768,12 @@ static bool renesas_sdhi_auto_correction(struct tmio_mmc_host *host)
return false;
}
static bool renesas_sdhi_check_scc_error(struct tmio_mmc_host *host)
static bool renesas_sdhi_check_scc_error(struct tmio_mmc_host *host,
struct mmc_request *mrq)
{
struct renesas_sdhi *priv = host_to_priv(host);
bool use_4tap = priv->quirks && priv->quirks->hs400_4taps;
bool ret = false;
/*
* Skip checking SCC errors when running on 4 taps in HS400 mode as
@ -785,11 +787,19 @@ static bool renesas_sdhi_check_scc_error(struct tmio_mmc_host *host)
if (mmc_doing_tune(host->mmc))
return false;
if (((mrq->cmd->error == -ETIMEDOUT) ||
(mrq->data && mrq->data->error == -ETIMEDOUT)) &&
((host->mmc->caps & MMC_CAP_NONREMOVABLE) ||
(host->ops.get_cd && host->ops.get_cd(host->mmc))))
ret |= true;
if (sd_scc_read32(host, priv, SH_MOBILE_SDHI_SCC_RVSCNTL) &
SH_MOBILE_SDHI_SCC_RVSCNTL_RVSEN)
return renesas_sdhi_auto_correction(host);
ret |= renesas_sdhi_auto_correction(host);
else
ret |= renesas_sdhi_manual_correction(host, use_4tap);
return renesas_sdhi_manual_correction(host, use_4tap);
return ret;
}
static int renesas_sdhi_wait_idle(struct tmio_mmc_host *host, u32 bit)

2
drivers/mmc/host/tmio_mmc.h
View File

@ -181,7 +181,7 @@ struct tmio_mmc_host {
unsigned int direction, int blk_size);
int (*write16_hook)(struct tmio_mmc_host *host, int addr);
void (*reset)(struct tmio_mmc_host *host);
bool (*check_retune)(struct tmio_mmc_host *host);
bool (*check_retune)(struct tmio_mmc_host *host, struct mmc_request *mrq);
void (*fixup_request)(struct tmio_mmc_host *host, struct mmc_request *mrq);
unsigned int (*get_timeout_cycles)(struct tmio_mmc_host *host);

2
drivers/mmc/host/tmio_mmc_core.c
View File

@ -804,7 +804,7 @@ static void tmio_mmc_finish_request(struct tmio_mmc_host *host)
}
/* Error means retune, but executed command was still successful */
if (host->check_retune && host->check_retune(host))
if (host->check_retune && host->check_retune(host, mrq))
mmc_retune_needed(host->mmc);
/* If SET_BLOCK_COUNT, continue with main command */