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author | Ingo Molnar <mingo@elte.hu> | 2010-04-02 22:02:55 +0400 |
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committer | Ingo Molnar <mingo@elte.hu> | 2010-04-02 22:03:08 +0400 |
commit | c9494727cf293ae2ec66af57547a3e79c724fec2 (patch) | |
tree | 44ae197b64fa7530ee695a90ad31326dda06f1e1 /drivers/mmc/core/sdio_io.c | |
parent | 6427462bfa50f50dc6c088c07037264fcc73eca1 (diff) | |
parent | 42be79e37e264557f12860fa4cc84b4de3685954 (diff) | |
download | linux-c9494727cf293ae2ec66af57547a3e79c724fec2.tar.xz |
Merge branch 'linus' into sched/core
Merge reason: update to latest upstream
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'drivers/mmc/core/sdio_io.c')
-rw-r--r-- | drivers/mmc/core/sdio_io.c | 56 |
1 files changed, 55 insertions, 1 deletions
diff --git a/drivers/mmc/core/sdio_io.c b/drivers/mmc/core/sdio_io.c index f9aa8a7deffa..ff27c8c71355 100644 --- a/drivers/mmc/core/sdio_io.c +++ b/drivers/mmc/core/sdio_io.c @@ -189,7 +189,12 @@ static inline unsigned int sdio_max_byte_size(struct sdio_func *func) { unsigned mval = min(func->card->host->max_seg_size, func->card->host->max_blk_size); - mval = min(mval, func->max_blksize); + + if (mmc_blksz_for_byte_mode(func->card)) + mval = min(mval, func->cur_blksize); + else + mval = min(mval, func->max_blksize); + return min(mval, 512u); /* maximum size for byte mode */ } @@ -635,3 +640,52 @@ void sdio_f0_writeb(struct sdio_func *func, unsigned char b, unsigned int addr, *err_ret = ret; } EXPORT_SYMBOL_GPL(sdio_f0_writeb); + +/** + * sdio_get_host_pm_caps - get host power management capabilities + * @func: SDIO function attached to host + * + * Returns a capability bitmask corresponding to power management + * features supported by the host controller that the card function + * might rely upon during a system suspend. The host doesn't need + * to be claimed, nor the function active, for this information to be + * obtained. + */ +mmc_pm_flag_t sdio_get_host_pm_caps(struct sdio_func *func) +{ + BUG_ON(!func); + BUG_ON(!func->card); + + return func->card->host->pm_caps; +} +EXPORT_SYMBOL_GPL(sdio_get_host_pm_caps); + +/** + * sdio_set_host_pm_flags - set wanted host power management capabilities + * @func: SDIO function attached to host + * + * Set a capability bitmask corresponding to wanted host controller + * power management features for the upcoming suspend state. + * This must be called, if needed, each time the suspend method of + * the function driver is called, and must contain only bits that + * were returned by sdio_get_host_pm_caps(). + * The host doesn't need to be claimed, nor the function active, + * for this information to be set. + */ +int sdio_set_host_pm_flags(struct sdio_func *func, mmc_pm_flag_t flags) +{ + struct mmc_host *host; + + BUG_ON(!func); + BUG_ON(!func->card); + + host = func->card->host; + + if (flags & ~host->pm_caps) + return -EINVAL; + + /* function suspend methods are serialized, hence no lock needed */ + host->pm_flags |= flags; + return 0; +} +EXPORT_SYMBOL_GPL(sdio_set_host_pm_flags); |