diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mmc/core/core.c | 31 |
1 files changed, 29 insertions, 2 deletions
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index 63ffc65f84a..b27b94078c2 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -728,15 +728,17 @@ static inline void mmc_set_ios(struct mmc_host *host) */ void mmc_set_chip_select(struct mmc_host *host, int mode) { + mmc_host_clk_hold(host); host->ios.chip_select = mode; mmc_set_ios(host); + mmc_host_clk_release(host); } /* * Sets the host clock to the highest possible frequency that * is below "hz". */ -void mmc_set_clock(struct mmc_host *host, unsigned int hz) +static void __mmc_set_clock(struct mmc_host *host, unsigned int hz) { WARN_ON(hz < host->f_min); @@ -747,6 +749,13 @@ void mmc_set_clock(struct mmc_host *host, unsigned int hz) mmc_set_ios(host); } +void mmc_set_clock(struct mmc_host *host, unsigned int hz) +{ + mmc_host_clk_hold(host); + __mmc_set_clock(host, hz); + mmc_host_clk_release(host); +} + #ifdef CONFIG_MMC_CLKGATE /* * This gates the clock by setting it to 0 Hz. @@ -779,7 +788,7 @@ void mmc_ungate_clock(struct mmc_host *host) if (host->clk_old) { BUG_ON(host->ios.clock); /* This call will also set host->clk_gated to false */ - mmc_set_clock(host, host->clk_old); + __mmc_set_clock(host, host->clk_old); } } @@ -807,8 +816,10 @@ void mmc_set_ungated(struct mmc_host *host) */ void mmc_set_bus_mode(struct mmc_host *host, unsigned int mode) { + mmc_host_clk_hold(host); host->ios.bus_mode = mode; mmc_set_ios(host); + mmc_host_clk_release(host); } /* @@ -816,8 +827,10 @@ void mmc_set_bus_mode(struct mmc_host *host, unsigned int mode) */ void mmc_set_bus_width(struct mmc_host *host, unsigned int width) { + mmc_host_clk_hold(host); host->ios.bus_width = width; mmc_set_ios(host); + mmc_host_clk_release(host); } /** @@ -1015,8 +1028,10 @@ u32 mmc_select_voltage(struct mmc_host *host, u32 ocr) ocr &= 3 << bit; + mmc_host_clk_hold(host); host->ios.vdd = bit; mmc_set_ios(host); + mmc_host_clk_release(host); } else { pr_warning("%s: host doesn't support card's voltages\n", mmc_hostname(host)); @@ -1063,8 +1078,10 @@ int mmc_set_signal_voltage(struct mmc_host *host, int signal_voltage, bool cmd11 */ void mmc_set_timing(struct mmc_host *host, unsigned int timing) { + mmc_host_clk_hold(host); host->ios.timing = timing; mmc_set_ios(host); + mmc_host_clk_release(host); } /* @@ -1072,8 +1089,10 @@ void mmc_set_timing(struct mmc_host *host, unsigned int timing) */ void mmc_set_driver_type(struct mmc_host *host, unsigned int drv_type) { + mmc_host_clk_hold(host); host->ios.drv_type = drv_type; mmc_set_ios(host); + mmc_host_clk_release(host); } /* @@ -1091,6 +1110,8 @@ static void mmc_power_up(struct mmc_host *host) { int bit; + mmc_host_clk_hold(host); + /* If ocr is set, we use it */ if (host->ocr) bit = ffs(host->ocr) - 1; @@ -1126,10 +1147,14 @@ static void mmc_power_up(struct mmc_host *host) * time required to reach a stable voltage. */ mmc_delay(10); + + mmc_host_clk_release(host); } static void mmc_power_off(struct mmc_host *host) { + mmc_host_clk_hold(host); + host->ios.clock = 0; host->ios.vdd = 0; @@ -1147,6 +1172,8 @@ static void mmc_power_off(struct mmc_host *host) host->ios.bus_width = MMC_BUS_WIDTH_1; host->ios.timing = MMC_TIMING_LEGACY; mmc_set_ios(host); + + mmc_host_clk_release(host); } /* |