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| author |   Adrian Hunter <adrian.hunter@intel.com> | 2015-02-06 14:12:59 +0200 |
|---|---|---|
| committer |   Ulf Hansson <ulf.hansson@linaro.org> | 2015-06-01 09:07:14 +0200 |
| commit | cb8496482e8886bbd6bd79462d8062db572b0473 (patch) | |
| tree | 030ff51ec5db81ff48aae945c140b685c7681f0d /drivers/mmc | |
| parent | mmc: mmc: Add driver strength selection (diff) | |
| download | linux-dev-cb8496482e8886bbd6bd79462d8062db572b0473.tar.xz linux-dev-cb8496482e8886bbd6bd79462d8062db572b0473.zip | |
mmc: sdhci: Add a callback to select drive strength
Add a callbak to let host drivers select drive
strength.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/host/sdhci.c | 13 | ||||
| -rw-r--r-- | drivers/mmc/host/sdhci.h | 4 |
2 files changed, 17 insertions, 0 deletions
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index b35ec79e7205..1b4861ddfb38 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -2048,6 +2048,18 @@ out_unlock: return err; } +static int sdhci_select_drive_strength(struct mmc_card *card, + unsigned int max_dtr, int host_drv, + int card_drv, int *drv_type) +{ + struct sdhci_host *host = mmc_priv(card->host); + + if (!host->ops->select_drive_strength) + return 0; + + return host->ops->select_drive_strength(host, card, max_dtr, host_drv, + card_drv, drv_type); +} static void sdhci_enable_preset_value(struct sdhci_host *host, bool enable) { @@ -2192,6 +2204,7 @@ static const struct mmc_host_ops sdhci_ops = { .start_signal_voltage_switch = sdhci_start_signal_voltage_switch, .prepare_hs400_tuning = sdhci_prepare_hs400_tuning, .execute_tuning = sdhci_execute_tuning, + .select_drive_strength = sdhci_select_drive_strength, .card_event = sdhci_card_event, .card_busy = sdhci_card_busy, }; diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h index 923ff223aea4..5521d29368e4 100644 --- a/drivers/mmc/host/sdhci.h +++ b/drivers/mmc/host/sdhci.h @@ -538,6 +538,10 @@ struct sdhci_ops { void (*platform_init)(struct sdhci_host *host); void (*card_event)(struct sdhci_host *host); void (*voltage_switch)(struct sdhci_host *host); + int (*select_drive_strength)(struct sdhci_host *host, + struct mmc_card *card, + unsigned int max_dtr, int host_drv, + int card_drv, int *drv_type); }; #ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS |