diff options
| author | Johan Rudholm <johan.rudholm@axis.com> | 2015-01-12 15:38:06 +0100 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2015-01-19 09:56:28 +0100 |
| commit | dc0ecfef29c60d3765f8e7991b3a4527733238b1 (patch) | |
| tree | 7211940653a7201ad99cc07df6f243619bf71851 /drivers | |
| parent | mmc: core: refactor the hw_reset routines (diff) | |
| download | linux-dc0ecfef29c60d3765f8e7991b3a4527733238b1.tar.xz linux-dc0ecfef29c60d3765f8e7991b3a4527733238b1.zip | |
mmc: sd: add reset bus_ops callback
Enable power cycle and re-initialization of SD cards via the reset
bus_ops. Power cycling a buggy SD card sometimes helps it get back on
track.
Signed-off-by: Johan Rudholm <johanru@axis.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mmc/core/sd.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c index 29fccdcacd68..36d5333838cb 100644 --- a/drivers/mmc/core/sd.c +++ b/drivers/mmc/core/sd.c @@ -1197,6 +1197,12 @@ static int mmc_sd_power_restore(struct mmc_host *host) return ret; } +static int mmc_sd_reset(struct mmc_host *host) +{ + mmc_power_cycle(host, host->card->ocr); + return mmc_sd_power_restore(host); +} + static const struct mmc_bus_ops mmc_sd_ops = { .remove = mmc_sd_remove, .detect = mmc_sd_detect, @@ -1207,6 +1213,7 @@ static const struct mmc_bus_ops mmc_sd_ops = { .power_restore = mmc_sd_power_restore, .alive = mmc_sd_alive, .shutdown = mmc_sd_suspend, + .reset = mmc_sd_reset, }; /* |