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mmc: core: Simplify by adding mmc_execute_tuning() 

For each MMC, SD and SDIO there is code that
holds the clock, calls ops->execute_tuning, and
releases the clock. Simplify the code a bit by
providing a separate function to do that.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Adrian Hunter 2014-12-05 19:40:59 +02:00 committed by Ulf Hansson
parent fdb9de129e
commit 63e415c640
5 changed files with 36 additions and 32 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
drivers/mmc/core/core.c
View File

@ -1077,6 +1077,30 @@ void mmc_set_ungated(struct mmc_host *host)
}
#endif
int mmc_execute_tuning(struct mmc_card *card)
{
struct mmc_host *host = card->host;
u32 opcode;
int err;
if (!host->ops->execute_tuning)
return 0;
if (mmc_card_mmc(card))
opcode = MMC_SEND_TUNING_BLOCK_HS200;
else
opcode = MMC_SEND_TUNING_BLOCK;
mmc_host_clk_hold(host);
err = host->ops->execute_tuning(host, opcode);
mmc_host_clk_release(host);
if (err)
pr_err("%s: tuning execution failed\n", mmc_hostname(host));
return err;
}
/*
* Change the bus mode (open drain/push-pull) of a host.
*/

3
drivers/mmc/core/core.h
View File

@ -86,5 +86,8 @@ void mmc_add_card_debugfs(struct mmc_card *card);
void mmc_remove_card_debugfs(struct mmc_card *card);
void mmc_init_context_info(struct mmc_host *host);
int mmc_execute_tuning(struct mmc_card *card);
#endif

14
drivers/mmc/core/mmc.c
View File

@ -1162,7 +1162,6 @@ bus_speed:
static int mmc_hs200_tuning(struct mmc_card *card)
{
struct mmc_host *host = card->host;
int err = 0;
/*
* Timing should be adjusted to the HS400 target
@ -1173,18 +1172,7 @@ static int mmc_hs200_tuning(struct mmc_card *card)
if (host->ops->prepare_hs400_tuning)
host->ops->prepare_hs400_tuning(host, &host->ios);
if (host->ops->execute_tuning) {
mmc_host_clk_hold(host);
err = host->ops->execute_tuning(host,
MMC_SEND_TUNING_BLOCK_HS200);
mmc_host_clk_release(host);
if (err)
pr_err("%s: tuning execution failed\n",
mmc_hostname(host));
}
return err;
return mmc_execute_tuning(card);
}
/*

13
drivers/mmc/core/sd.c
View File

@ -660,15 +660,10 @@ static int mmc_sd_init_uhs_card(struct mmc_card *card)
* SPI mode doesn't define CMD19 and tuning is only valid for SDR50 and
* SDR104 mode SD-cards. Note that tuning is mandatory for SDR104.
*/
if (!mmc_host_is_spi(card->host) && card->host->ops->execute_tuning &&
(card->sd_bus_speed == UHS_SDR50_BUS_SPEED ||
card->sd_bus_speed == UHS_SDR104_BUS_SPEED)) {
mmc_host_clk_hold(card->host);
err = card->host->ops->execute_tuning(card->host,
MMC_SEND_TUNING_BLOCK);
mmc_host_clk_release(card->host);
}
if (!mmc_host_is_spi(card->host) &&
(card->sd_bus_speed == UHS_SDR50_BUS_SPEED ||
card->sd_bus_speed == UHS_SDR104_BUS_SPEED))
err = mmc_execute_tuning(card);
out:
kfree(status);

14
drivers/mmc/core/sdio.c
View File

@ -567,17 +567,11 @@ static int mmc_sdio_init_uhs_card(struct mmc_card *card)
* SPI mode doesn't define CMD19 and tuning is only valid for SDR50 and
* SDR104 mode SD-cards. Note that tuning is mandatory for SDR104.
*/
if (!mmc_host_is_spi(card->host) && card->host->ops->execute_tuning &&
((card->sw_caps.sd3_bus_mode & SD_MODE_UHS_SDR50) ||
(card->sw_caps.sd3_bus_mode & SD_MODE_UHS_SDR104))) {
mmc_host_clk_hold(card->host);
err = card->host->ops->execute_tuning(card->host,
MMC_SEND_TUNING_BLOCK);
mmc_host_clk_release(card->host);
}
if (!mmc_host_is_spi(card->host) &&
((card->sw_caps.sd3_bus_mode & SD_MODE_UHS_SDR50) ||
(card->sw_caps.sd3_bus_mode & SD_MODE_UHS_SDR104)))
err = mmc_execute_tuning(card);
out:
return err;
}