diff options
| -rw-r--r-- | drivers/mmc/core/core.c | 38 | ||||
| -rw-r--r-- | drivers/mmc/core/core.h | 2 | ||||
| -rw-r--r-- | drivers/mmc/core/sd.c | 27 | ||||
| -rw-r--r-- | drivers/mmc/core/sdio.c | 25 |
4 files changed, 46 insertions, 46 deletions
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index 95009f90ae07..9ad73f30f744 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -1639,6 +1639,44 @@ void mmc_set_driver_type(struct mmc_host *host, unsigned int drv_type) mmc_host_clk_release(host); } +int mmc_select_drive_strength(struct mmc_card *card, unsigned int max_dtr, + int card_drv_type, int *drv_type) +{ + struct mmc_host *host = card->host; + int host_drv_type = SD_DRIVER_TYPE_B; + int drive_strength; + + *drv_type = 0; + + if (!host->ops->select_drive_strength) + return 0; + + /* Use SD definition of driver strength for hosts */ + if (host->caps & MMC_CAP_DRIVER_TYPE_A) + host_drv_type |= SD_DRIVER_TYPE_A; + + if (host->caps & MMC_CAP_DRIVER_TYPE_C) + host_drv_type |= SD_DRIVER_TYPE_C; + + if (host->caps & MMC_CAP_DRIVER_TYPE_D) + host_drv_type |= SD_DRIVER_TYPE_D; + + /* + * The drive strength that the hardware can support + * depends on the board design. Pass the appropriate + * information and let the hardware specific code + * return what is possible given the options + */ + mmc_host_clk_hold(host); + drive_strength = host->ops->select_drive_strength(card, max_dtr, + host_drv_type, + card_drv_type, + drv_type); + mmc_host_clk_release(host); + + return drive_strength; +} + /* * Apply power to the MMC stack. This is a two-stage process. * First, we enable power to the card without the clock running. diff --git a/drivers/mmc/core/core.h b/drivers/mmc/core/core.h index e6f2de7074ad..1a22a82209b2 100644 --- a/drivers/mmc/core/core.h +++ b/drivers/mmc/core/core.h @@ -50,6 +50,8 @@ int mmc_set_signal_voltage(struct mmc_host *host, int signal_voltage, u32 ocr); int __mmc_set_signal_voltage(struct mmc_host *host, int signal_voltage); void mmc_set_timing(struct mmc_host *host, unsigned int timing); void mmc_set_driver_type(struct mmc_host *host, unsigned int drv_type); +int mmc_select_drive_strength(struct mmc_card *card, unsigned int max_dtr, + int card_drv_type, int *drv_type); void mmc_power_up(struct mmc_host *host, u32 ocr); void mmc_power_off(struct mmc_host *host); void mmc_power_cycle(struct mmc_host *host, u32 ocr); diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c index 63f9163b8dda..9771b84db4b3 100644 --- a/drivers/mmc/core/sd.c +++ b/drivers/mmc/core/sd.c @@ -386,35 +386,14 @@ out: static int sd_select_driver_type(struct mmc_card *card, u8 *status) { - int host_drv_type = SD_DRIVER_TYPE_B; int card_drv_type, drive_strength, drv_type; int err; - if (!card->host->ops->select_drive_strength) - return 0; - - if (card->host->caps & MMC_CAP_DRIVER_TYPE_A) - host_drv_type |= SD_DRIVER_TYPE_A; - - if (card->host->caps & MMC_CAP_DRIVER_TYPE_C) - host_drv_type |= SD_DRIVER_TYPE_C; - - if (card->host->caps & MMC_CAP_DRIVER_TYPE_D) - host_drv_type |= SD_DRIVER_TYPE_D; - card_drv_type = card->sw_caps.sd3_drv_type | SD_DRIVER_TYPE_B; - /* - * The drive strength that the hardware can support - * depends on the board design. Pass the appropriate - * 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, - card->sw_caps.uhs_max_dtr, - host_drv_type, card_drv_type, &drv_type); - mmc_host_clk_release(card->host); + drive_strength = mmc_select_drive_strength(card, + card->sw_caps.uhs_max_dtr, + card_drv_type, &drv_type); if (drive_strength) { err = mmc_sd_switch(card, 1, 2, drive_strength, status); diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c index d3d13047f316..73b091331c96 100644 --- a/drivers/mmc/core/sdio.c +++ b/drivers/mmc/core/sdio.c @@ -402,34 +402,15 @@ static unsigned char host_drive_to_sdio_drive(int host_strength) static void sdio_select_driver_type(struct mmc_card *card) { - int host_drv_type = SD_DRIVER_TYPE_B; int card_drv_type, drive_strength, drv_type; unsigned char card_strength; int err; - if (!card->host->ops->select_drive_strength) - return; - - if (card->host->caps & MMC_CAP_DRIVER_TYPE_A) - host_drv_type |= SD_DRIVER_TYPE_A; - - if (card->host->caps & MMC_CAP_DRIVER_TYPE_C) - host_drv_type |= SD_DRIVER_TYPE_C; - - if (card->host->caps & MMC_CAP_DRIVER_TYPE_D) - host_drv_type |= SD_DRIVER_TYPE_D; - card_drv_type = card->sw_caps.sd3_drv_type | SD_DRIVER_TYPE_B; - /* - * The drive strength that the hardware can support - * depends on the board design. Pass the appropriate - * information and let the hardware specific code - * return what is possible given the options - */ - drive_strength = card->host->ops->select_drive_strength(card, - card->sw_caps.uhs_max_dtr, - host_drv_type, card_drv_type, &drv_type); + drive_strength = mmc_select_drive_strength(card, + card->sw_caps.uhs_max_dtr, + card_drv_type, &drv_type); if (drive_strength) { /* if error just use default for drive strength B */ |