diff options
| author | Nicolas Pitre | 2010-03-05 22:43:32 +0100 |
|---|---|---|
| committer | Linus Torvalds | 2010-03-06 20:26:37 +0100 |
| commit | 2f4cbb3d834922ffa0309b6a08fa42dac87ef9d2 (patch) | |
| tree | 9c4b919b3851d3e0c066ba5c456bf0d2c150da4f /drivers/mmc/host/sdhci.c | |
| parent | sdio: introduce API for special power management features (diff) | |
| download | kernel-qcow2-linux-2f4cbb3d834922ffa0309b6a08fa42dac87ef9d2.tar.gz kernel-qcow2-linux-2f4cbb3d834922ffa0309b6a08fa42dac87ef9d2.tar.xz kernel-qcow2-linux-2f4cbb3d834922ffa0309b6a08fa42dac87ef9d2.zip | |
sdio: sdhci support for suspend mode PM features
Tested with an XO v1.5 from OLPC.
Signed-off-by: Nicolas Pitre <nico@marvell.com>
Cc: <linux-mmc@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/mmc/host/sdhci.c')
| -rw-r--r-- | drivers/mmc/host/sdhci.c | 26 |
1 files changed, 17 insertions, 9 deletions
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 6c866b43b03c..d6ab62d539fb 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -174,20 +174,31 @@ static void sdhci_reset(struct sdhci_host *host, u8 mask) sdhci_clear_set_irqs(host, SDHCI_INT_ALL_MASK, ier); } -static void sdhci_init(struct sdhci_host *host) +static void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios); + +static void sdhci_init(struct sdhci_host *host, int soft) { - sdhci_reset(host, SDHCI_RESET_ALL); + if (soft) + sdhci_reset(host, SDHCI_RESET_CMD|SDHCI_RESET_DATA); + else + sdhci_reset(host, SDHCI_RESET_ALL); sdhci_clear_set_irqs(host, SDHCI_INT_ALL_MASK, SDHCI_INT_BUS_POWER | SDHCI_INT_DATA_END_BIT | SDHCI_INT_DATA_CRC | SDHCI_INT_DATA_TIMEOUT | SDHCI_INT_INDEX | SDHCI_INT_END_BIT | SDHCI_INT_CRC | SDHCI_INT_TIMEOUT | SDHCI_INT_DATA_END | SDHCI_INT_RESPONSE); + + if (soft) { + /* force clock reconfiguration */ + host->clock = 0; + sdhci_set_ios(host->mmc, &host->mmc->ios); + } } static void sdhci_reinit(struct sdhci_host *host) { - sdhci_init(host); + sdhci_init(host, 0); sdhci_enable_card_detection(host); } @@ -1600,16 +1611,13 @@ int sdhci_resume_host(struct sdhci_host *host) if (ret) return ret; - sdhci_init(host); + sdhci_init(host, (host->mmc->pm_flags & MMC_PM_KEEP_POWER)); mmiowb(); ret = mmc_resume_host(host->mmc); - if (ret) - return ret; - sdhci_enable_card_detection(host); - return 0; + return ret; } EXPORT_SYMBOL_GPL(sdhci_resume_host); @@ -1864,7 +1872,7 @@ int sdhci_add_host(struct sdhci_host *host) if (ret) goto untasklet; - sdhci_init(host); + sdhci_init(host, 0); #ifdef CONFIG_MMC_DEBUG sdhci_dumpregs(host); |