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| author | Heiner Kallweit <hkallweit1@gmail.com> | 2017-03-25 13:26:18 +0300 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2017-04-24 22:41:50 +0300 |
| commit | 4eee86c3d825109ed91555a553fbdb927592f009 (patch) | |
| tree | 658143fc6807ee7aadbb00ed717e46dc1aa98477 /drivers/mmc/host/meson-gx-mmc.c | |
| parent | f016c67629c818ca6a39f4d6e35d85d9e930eacc (diff) | |
| download | linux-4eee86c3d825109ed91555a553fbdb927592f009.tar.xz | |
mmc: meson-gx: switch to dynamic timeout values
Currently we use a fixed timeout of 4s for all data transfers. Switch
to dynamic timeout values by making use of data->timeout_ns.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc/host/meson-gx-mmc.c')
| -rw-r--r-- | drivers/mmc/host/meson-gx-mmc.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/drivers/mmc/host/meson-gx-mmc.c b/drivers/mmc/host/meson-gx-mmc.c index 0a0f5008940b..810b68d5067b 100644 --- a/drivers/mmc/host/meson-gx-mmc.c +++ b/drivers/mmc/host/meson-gx-mmc.c @@ -163,6 +163,18 @@ struct sd_emmc_desc { #define CMD_RESP_MASK GENMASK(31, 1) #define CMD_RESP_SRAM BIT(0) +static unsigned int meson_mmc_get_timeout_msecs(struct mmc_data *data) +{ + unsigned int timeout = data->timeout_ns / NSEC_PER_MSEC; + + if (!timeout) + return SD_EMMC_CMD_TIMEOUT_DATA; + + timeout = roundup_pow_of_two(timeout); + + return min(timeout, 32768U); /* max. 2^15 ms */ +} + static int meson_mmc_clk_set(struct meson_host *host, unsigned long clk_rate) { struct mmc_host *mmc = host->mmc; @@ -441,7 +453,7 @@ static void meson_mmc_start_cmd(struct mmc_host *mmc, struct mmc_command *cmd) if (data) { cmd_cfg |= CMD_CFG_DATA_IO; cmd_cfg |= FIELD_PREP(CMD_CFG_TIMEOUT_MASK, - ilog2(SD_EMMC_CMD_TIMEOUT_DATA)); + ilog2(meson_mmc_get_timeout_msecs(data))); if (data->blocks > 1) { cmd_cfg |= CMD_CFG_BLOCK_MODE; |