diff options
| author | Kishon Vijay Abraham I <kishon@ti.com> | 2017-09-21 16:30:03 +0200 |
|---|---|---|
| committer | Jaehoon Chung <jh80.chung@samsung.com> | 2018-01-12 18:11:04 +0900 |
| commit | 35f6782055c99410fbeae33ab28ea68de154360c (patch) | |
| tree | a9687137937bbd349e0d72e6e73de756e809d0c7 /drivers/mmc/mmc.c | |
| parent | fb7c3beb5178e5c81a00642e71a4b73427b52429 (diff) | |
mmc: add a new mmc parameter to disable mmc clock
mmc clock has to be disabled in certain cases like during
the voltage switch sequence. Modify mmc_set_clock function
to take disable as an argument that signifies if the
clock has to be enabled or disabled.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Diffstat (limited to 'drivers/mmc/mmc.c')
| -rw-r--r-- | drivers/mmc/mmc.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c index 0ffe7bf417c..664b71affd8 100644 --- a/drivers/mmc/mmc.c +++ b/drivers/mmc/mmc.c @@ -1214,7 +1214,7 @@ static int mmc_set_ios(struct mmc *mmc) } #endif -int mmc_set_clock(struct mmc *mmc, uint clock) +int mmc_set_clock(struct mmc *mmc, uint clock, bool disable) { if (clock > mmc->cfg->f_max) clock = mmc->cfg->f_max; @@ -1223,6 +1223,7 @@ int mmc_set_clock(struct mmc *mmc, uint clock) clock = mmc->cfg->f_min; mmc->clock = clock; + mmc->clk_disable = disable; return mmc_set_ios(mmc); } @@ -1322,7 +1323,7 @@ static int sd_select_mode_and_width(struct mmc *mmc) /* configure the bus mode (host) */ mmc_select_mode(mmc, mwt->mode); - mmc_set_clock(mmc, mmc->tran_speed); + mmc_set_clock(mmc, mmc->tran_speed, false); err = sd_read_ssr(mmc); if (!err) @@ -1333,7 +1334,7 @@ static int sd_select_mode_and_width(struct mmc *mmc) error: /* revert to a safer bus speed */ mmc_select_mode(mmc, SD_LEGACY); - mmc_set_clock(mmc, mmc->tran_speed); + mmc_set_clock(mmc, mmc->tran_speed, false); } } } @@ -1476,7 +1477,7 @@ static int mmc_select_mode_and_width(struct mmc *mmc) /* configure the bus mode (host) */ mmc_select_mode(mmc, mwt->mode); - mmc_set_clock(mmc, mmc->tran_speed); + mmc_set_clock(mmc, mmc->tran_speed, false); /* do a transfer to check the configuration */ err = mmc_read_and_compare_ext_csd(mmc); @@ -1950,7 +1951,7 @@ static void mmc_set_initial_state(struct mmc *mmc) mmc_select_mode(mmc, MMC_LEGACY); mmc_set_bus_width(mmc, 1); - mmc_set_clock(mmc, 0); + mmc_set_clock(mmc, 0, false); } static int mmc_power_on(struct mmc *mmc) |