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mmc: tmio: reset the controller after power-up

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This fixes two reported problems:
1. after a system resume the controller isn't functioning until a command
   runs on a timeout and a controller reset is performed.
2. if a card is ejected during a running write operation, its re-insertion
   isn't detected.

Reported-by: Nguyen Viet Dung <nv-dung@jinso.co.jp>
Reported-by: Nguyen Hong Ky <nh-ky@jinso.co.jp>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski+renesas@gmail.com>
Tested-by: Nguyen Viet Dung <nv-dung@jinso.co.jp>
Tested-by: Nguyen Hong Ky <nh-ky@jinso.co.jp>
Signed-off-by: Chris Ball <cjb@laptop.org>
This commit is contained in:
Guennadi Liakhovetski 2013-06-06 16:35:48 +02:00 committed by Chris Ball
parent e83b7a8acc
commit b9ec274412
1 changed files with 2 additions and 1 deletions
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3
drivers/mmc/host/tmio_mmc_pio.c
View file

@ -867,6 +867,8 @@ static void tmio_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
host->resuming = false;
}
}
if (host->power == TMIO_MMC_OFF_STOP)
tmio_mmc_reset(host);
tmio_mmc_set_clock(host, ios->clock);
if (host->power == TMIO_MMC_OFF_STOP)
/* power up SD card and the bus */
@ -1186,7 +1188,6 @@ int tmio_mmc_host_runtime_resume(struct device *dev)
struct mmc_host *mmc = dev_get_drvdata(dev);
struct tmio_mmc_host *host = mmc_priv(mmc);
tmio_mmc_reset(host);
tmio_mmc_enable_dma(host, true);
return 0;