diff options
| author | Ulf Hansson <ulf.hansson@linaro.org> | 2018-04-05 21:24:15 +0200 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2018-05-08 09:33:50 +0200 |
| commit | 508c9864ccede5dd4b8a7220b3fe6998763e4407 (patch) | |
| tree | fbf0c81decabc0fcac4ac627ce2c2d96ec837a58 /drivers/mmc/core | |
| parent | 1433269c4d2461be1f36db5dbb453976b38996ff (diff) | |
| download | linux-508c9864ccede5dd4b8a7220b3fe6998763e4407.tar.bz2 | |
mmc: core: Share internal function to set initial signal voltage
Move the corresponding code for setting the initial signal voltage, from
mmc_power_up() into a new function, mmc_set_initial_signal_voltage().
Make the function internally available to the mmc core, as to allow the
following changes to make use of it.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Tested-by: Quentin Schulz <quentin.schulz@bootlin.com>
Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com>
Diffstat (limited to 'drivers/mmc/core')
| -rw-r--r-- | drivers/mmc/core/core.c | 19 | ||||
| -rw-r--r-- | drivers/mmc/core/core.h | 1 |
2 files changed, 13 insertions, 7 deletions
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index 7a79dc1599e5..2c1a220531c4 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -1484,6 +1484,17 @@ int mmc_set_signal_voltage(struct mmc_host *host, int signal_voltage) } +void mmc_set_initial_signal_voltage(struct mmc_host *host) +{ + /* Try to set signal voltage to 3.3V but fall back to 1.8v or 1.2v */ + if (!mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330)) + dev_dbg(mmc_dev(host), "Initial signal voltage of 3.3v\n"); + else if (!mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180)) + dev_dbg(mmc_dev(host), "Initial signal voltage of 1.8v\n"); + else if (!mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120)) + dev_dbg(mmc_dev(host), "Initial signal voltage of 1.2v\n"); +} + int mmc_host_set_uhs_voltage(struct mmc_host *host) { u32 clock; @@ -1646,13 +1657,7 @@ void mmc_power_up(struct mmc_host *host, u32 ocr) /* Set initial state and call mmc_set_ios */ mmc_set_initial_state(host); - /* Try to set signal voltage to 3.3V but fall back to 1.8v or 1.2v */ - if (!mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330)) - dev_dbg(mmc_dev(host), "Initial signal voltage of 3.3v\n"); - else if (!mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180)) - dev_dbg(mmc_dev(host), "Initial signal voltage of 1.8v\n"); - else if (!mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120)) - dev_dbg(mmc_dev(host), "Initial signal voltage of 1.2v\n"); + mmc_set_initial_signal_voltage(host); /* * This delay should be sufficient to allow the power supply diff --git a/drivers/mmc/core/core.h b/drivers/mmc/core/core.h index a141ec0e1ccc..9d8f09ac0821 100644 --- a/drivers/mmc/core/core.h +++ b/drivers/mmc/core/core.h @@ -52,6 +52,7 @@ u32 mmc_select_voltage(struct mmc_host *host, u32 ocr); int mmc_set_uhs_voltage(struct mmc_host *host, u32 ocr); int mmc_host_set_uhs_voltage(struct mmc_host *host); int mmc_set_signal_voltage(struct mmc_host *host, int signal_voltage); +void mmc_set_initial_signal_voltage(struct mmc_host *host); 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, |