diff options
Diffstat (limited to 'drivers/mmc/core/sd.c')
| -rw-r--r-- | drivers/mmc/core/sd.c | 30 |
1 files changed, 21 insertions, 9 deletions
diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c index c63ad03c29c7..c272c6868ecf 100644 --- a/drivers/mmc/core/sd.c +++ b/drivers/mmc/core/sd.c @@ -451,9 +451,11 @@ static int sd_select_driver_type(struct mmc_card *card, u8 *status) * information and let the hardware specific code * return what is possible given the options */ + mmc_host_clk_hold(card->host); drive_strength = card->host->ops->select_drive_strength( card->sw_caps.uhs_max_dtr, host_drv_type, card_drv_type); + mmc_host_clk_release(card->host); err = mmc_sd_switch(card, 1, 2, drive_strength, status); if (err) @@ -660,9 +662,12 @@ static int mmc_sd_init_uhs_card(struct mmc_card *card) goto out; /* SPI mode doesn't define CMD19 */ - if (!mmc_host_is_spi(card->host) && card->host->ops->execute_tuning) + if (!mmc_host_is_spi(card->host) && card->host->ops->execute_tuning) { + mmc_host_clk_hold(card->host); err = card->host->ops->execute_tuning(card->host, MMC_SEND_TUNING_BLOCK); + mmc_host_clk_release(card->host); + } out: kfree(status); @@ -850,8 +855,11 @@ int mmc_sd_setup_card(struct mmc_host *host, struct mmc_card *card, if (!reinit) { int ro = -1; - if (host->ops->get_ro) + if (host->ops->get_ro) { + mmc_host_clk_hold(card->host); ro = host->ops->get_ro(host); + mmc_host_clk_release(card->host); + } if (ro < 0) { pr_warning("%s: host does not " @@ -903,6 +911,9 @@ static int mmc_sd_init_card(struct mmc_host *host, u32 ocr, BUG_ON(!host); WARN_ON(!host->claimed); + /* The initialization should be done at 3.3 V I/O voltage. */ + mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330, 0); + err = mmc_sd_get_cid(host, ocr, cid, &rocr); if (err) return err; @@ -967,8 +978,11 @@ static int mmc_sd_init_card(struct mmc_host *host, u32 ocr, * Since initialization is now complete, enable preset * value registers for UHS-I cards. */ - if (host->ops->enable_preset_value) + if (host->ops->enable_preset_value) { + mmc_host_clk_hold(card->host); host->ops->enable_preset_value(host, true); + mmc_host_clk_release(card->host); + } } else { /* * Attempt to change to high-speed (if supported) @@ -1145,14 +1159,12 @@ int mmc_attach_sd(struct mmc_host *host) BUG_ON(!host); WARN_ON(!host->claimed); - /* Make sure we are at 3.3V signalling voltage */ - err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330, false); - if (err) - return err; - /* Disable preset value enable if already set since last time */ - if (host->ops->enable_preset_value) + if (host->ops->enable_preset_value) { + mmc_host_clk_hold(host); host->ops->enable_preset_value(host, false); + mmc_host_clk_release(host); + } err = mmc_send_app_op_cond(host, 0, &ocr); if (err) |