diff options
-rw-r--r-- | drivers/mmc/core/core.c | 19 | ||||
-rw-r--r-- | drivers/mmc/core/host.h | 21 | ||||
-rw-r--r-- | drivers/mmc/core/sd.c | 22 | ||||
-rw-r--r-- | drivers/mmc/core/sdio_irq.c | 10 | ||||
-rw-r--r-- | include/linux/mmc/host.h | 19 |
5 files changed, 61 insertions, 30 deletions
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index f545a3e6eb80..b3063b741df3 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -290,8 +290,11 @@ static void mmc_wait_for_req_done(struct mmc_host *host, static void mmc_pre_req(struct mmc_host *host, struct mmc_request *mrq, bool is_first_req) { - if (host->ops->pre_req) + if (host->ops->pre_req) { + mmc_host_clk_hold(host); host->ops->pre_req(host, mrq, is_first_req); + mmc_host_clk_release(host); + } } /** @@ -306,8 +309,11 @@ static void mmc_pre_req(struct mmc_host *host, struct mmc_request *mrq, static void mmc_post_req(struct mmc_host *host, struct mmc_request *mrq, int err) { - if (host->ops->post_req) + if (host->ops->post_req) { + mmc_host_clk_hold(host); host->ops->post_req(host, mrq, err); + mmc_host_clk_release(host); + } } /** @@ -620,7 +626,9 @@ int mmc_host_enable(struct mmc_host *host) int err; host->en_dis_recurs = 1; + mmc_host_clk_hold(host); err = host->ops->enable(host); + mmc_host_clk_release(host); host->en_dis_recurs = 0; if (err) { @@ -640,7 +648,9 @@ static int mmc_host_do_disable(struct mmc_host *host, int lazy) int err; host->en_dis_recurs = 1; + mmc_host_clk_hold(host); err = host->ops->disable(host, lazy); + mmc_host_clk_release(host); host->en_dis_recurs = 0; if (err < 0) { @@ -1203,8 +1213,11 @@ int mmc_set_signal_voltage(struct mmc_host *host, int signal_voltage, bool cmd11 host->ios.signal_voltage = signal_voltage; - if (host->ops->start_signal_voltage_switch) + if (host->ops->start_signal_voltage_switch) { + mmc_host_clk_hold(host); err = host->ops->start_signal_voltage_switch(host, &host->ios); + mmc_host_clk_release(host); + } return err; } diff --git a/drivers/mmc/core/host.h b/drivers/mmc/core/host.h index fb8a5cd2e4a1..08a7852ade44 100644 --- a/drivers/mmc/core/host.h +++ b/drivers/mmc/core/host.h @@ -14,27 +14,6 @@ int mmc_register_host_class(void); void mmc_unregister_host_class(void); - -#ifdef CONFIG_MMC_CLKGATE -void mmc_host_clk_hold(struct mmc_host *host); -void mmc_host_clk_release(struct mmc_host *host); -unsigned int mmc_host_clk_rate(struct mmc_host *host); - -#else -static inline void mmc_host_clk_hold(struct mmc_host *host) -{ -} - -static inline void mmc_host_clk_release(struct mmc_host *host) -{ -} - -static inline unsigned int mmc_host_clk_rate(struct mmc_host *host) -{ - return host->ios.clock; -} -#endif - void mmc_host_deeper_disable(struct work_struct *work); #endif diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c index c63ad03c29c7..5017f9354ce2 100644 --- a/drivers/mmc/core/sd.c +++ b/drivers/mmc/core/sd.c @@ -451,9 +451,11 @@ static int sd_select_driver_type(struct mmc_card *card, u8 *status) * 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->sw_caps.uhs_max_dtr, host_drv_type, card_drv_type); + mmc_host_clk_release(card->host); err = mmc_sd_switch(card, 1, 2, drive_strength, status); if (err) @@ -660,9 +662,12 @@ static int mmc_sd_init_uhs_card(struct mmc_card *card) goto out; /* SPI mode doesn't define CMD19 */ - if (!mmc_host_is_spi(card->host) && card->host->ops->execute_tuning) + if (!mmc_host_is_spi(card->host) && card->host->ops->execute_tuning) { + mmc_host_clk_hold(card->host); err = card->host->ops->execute_tuning(card->host, MMC_SEND_TUNING_BLOCK); + mmc_host_clk_release(card->host); + } out: kfree(status); @@ -850,8 +855,11 @@ int mmc_sd_setup_card(struct mmc_host *host, struct mmc_card *card, if (!reinit) { int ro = -1; - if (host->ops->get_ro) + if (host->ops->get_ro) { + mmc_host_clk_hold(card->host); ro = host->ops->get_ro(host); + mmc_host_clk_release(card->host); + } if (ro < 0) { pr_warning("%s: host does not " @@ -967,8 +975,11 @@ static int mmc_sd_init_card(struct mmc_host *host, u32 ocr, * Since initialization is now complete, enable preset * value registers for UHS-I cards. */ - if (host->ops->enable_preset_value) + if (host->ops->enable_preset_value) { + mmc_host_clk_hold(card->host); host->ops->enable_preset_value(host, true); + mmc_host_clk_release(card->host); + } } else { /* * Attempt to change to high-speed (if supported) @@ -1151,8 +1162,11 @@ int mmc_attach_sd(struct mmc_host *host) return err; /* Disable preset value enable if already set since last time */ - if (host->ops->enable_preset_value) + if (host->ops->enable_preset_value) { + mmc_host_clk_hold(host); host->ops->enable_preset_value(host, false); + mmc_host_clk_release(host); + } err = mmc_send_app_op_cond(host, 0, &ocr); if (err) diff --git a/drivers/mmc/core/sdio_irq.c b/drivers/mmc/core/sdio_irq.c index 68f81b9ee0fb..f573e7f9f740 100644 --- a/drivers/mmc/core/sdio_irq.c +++ b/drivers/mmc/core/sdio_irq.c @@ -146,15 +146,21 @@ static int sdio_irq_thread(void *_host) } set_current_state(TASK_INTERRUPTIBLE); - if (host->caps & MMC_CAP_SDIO_IRQ) + if (host->caps & MMC_CAP_SDIO_IRQ) { + mmc_host_clk_hold(host); host->ops->enable_sdio_irq(host, 1); + mmc_host_clk_release(host); + } if (!kthread_should_stop()) schedule_timeout(period); set_current_state(TASK_RUNNING); } while (!kthread_should_stop()); - if (host->caps & MMC_CAP_SDIO_IRQ) + if (host->caps & MMC_CAP_SDIO_IRQ) { + mmc_host_clk_hold(host); host->ops->enable_sdio_irq(host, 0); + mmc_host_clk_release(host); + } pr_debug("%s: IRQ thread exiting with code %d\n", mmc_hostname(host), ret); diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index 0beba1e5e1ed..73e5ee8e9ca2 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -444,4 +444,23 @@ static inline int mmc_boot_partition_access(struct mmc_host *host) return !(host->caps2 & MMC_CAP2_BOOTPART_NOACC); } +#ifdef CONFIG_MMC_CLKGATE +void mmc_host_clk_hold(struct mmc_host *host); +void mmc_host_clk_release(struct mmc_host *host); +unsigned int mmc_host_clk_rate(struct mmc_host *host); + +#else +static inline void mmc_host_clk_hold(struct mmc_host *host) +{ +} + +static inline void mmc_host_clk_release(struct mmc_host *host) +{ +} + +static inline unsigned int mmc_host_clk_rate(struct mmc_host *host) +{ + return host->ios.clock; +} +#endif #endif /* LINUX_MMC_HOST_H */ |