static void sdhci_enable_preset_value(struct sdhci_host *host, bool enable);
static int sdhci_do_get_cd(struct sdhci_host *host);
-#ifdef CONFIG_PM
-static int sdhci_runtime_pm_get(struct sdhci_host *host);
-static int sdhci_runtime_pm_put(struct sdhci_host *host);
-static void sdhci_runtime_pm_bus_on(struct sdhci_host *host);
-static void sdhci_runtime_pm_bus_off(struct sdhci_host *host);
-#else
-static inline int sdhci_runtime_pm_get(struct sdhci_host *host)
-{
- return 0;
-}
-static inline int sdhci_runtime_pm_put(struct sdhci_host *host)
-{
- return 0;
-}
-static void sdhci_runtime_pm_bus_on(struct sdhci_host *host)
-{
-}
-static void sdhci_runtime_pm_bus_off(struct sdhci_host *host)
-{
-}
-#endif
-
static void sdhci_dumpregs(struct sdhci_host *host)
{
pr_debug(DRIVER_NAME ": =========== REGISTER DUMP (%s)===========\n",
sdhci_set_card_detection(host, false);
}
+static void sdhci_runtime_pm_bus_on(struct sdhci_host *host)
+{
+ if (host->bus_on)
+ return;
+ host->bus_on = true;
+ pm_runtime_get_noresume(host->mmc->parent);
+}
+
+static void sdhci_runtime_pm_bus_off(struct sdhci_host *host)
+{
+ if (!host->bus_on)
+ return;
+ host->bus_on = false;
+ pm_runtime_put_noidle(host->mmc->parent);
+}
+
void sdhci_reset(struct sdhci_host *host, u8 mask)
{
unsigned long timeout;
return preset;
}
-void sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
+u16 sdhci_calc_clk(struct sdhci_host *host, unsigned int clock,
+ unsigned int *actual_clock)
{
int div = 0; /* Initialized for compiler warning */
int real_div = div, clk_mul = 1;
u16 clk = 0;
- unsigned long timeout;
bool switch_base_clk = false;
- host->mmc->actual_clock = 0;
-
- sdhci_writew(host, 0, SDHCI_CLOCK_CONTROL);
- if (host->quirks2 & SDHCI_QUIRK2_NEED_DELAY_AFTER_INT_CLK_RST)
- mdelay(1);
-
- if (clock == 0)
- return;
-
if (host->version >= SDHCI_SPEC_300) {
if (host->preset_enabled) {
u16 pre_val;
clock_set:
if (real_div)
- host->mmc->actual_clock = (host->max_clk * clk_mul) / real_div;
+ *actual_clock = (host->max_clk * clk_mul) / real_div;
clk |= (div & SDHCI_DIV_MASK) << SDHCI_DIVIDER_SHIFT;
clk |= ((div & SDHCI_DIV_HI_MASK) >> SDHCI_DIV_MASK_LEN)
<< SDHCI_DIVIDER_HI_SHIFT;
+
+ return clk;
+}
+EXPORT_SYMBOL_GPL(sdhci_calc_clk);
+
+void sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
+{
+ u16 clk;
+ unsigned long timeout;
+
+ host->mmc->actual_clock = 0;
+
+ sdhci_writew(host, 0, SDHCI_CLOCK_CONTROL);
+
+ if (clock == 0)
+ return;
+
+ clk = sdhci_calc_clk(host, clock, &host->mmc->actual_clock);
+
clk |= SDHCI_CLOCK_INT_EN;
sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL);
host = mmc_priv(mmc);
- sdhci_runtime_pm_get(host);
-
/* Firstly check card presence */
present = mmc->ops->get_cd(mmc);
{
struct sdhci_host *host = mmc_priv(mmc);
- sdhci_runtime_pm_get(host);
sdhci_do_set_ios(host, ios);
- sdhci_runtime_pm_put(host);
}
static int sdhci_do_get_cd(struct sdhci_host *host)
static int sdhci_get_cd(struct mmc_host *mmc)
{
struct sdhci_host *host = mmc_priv(mmc);
- int ret;
- sdhci_runtime_pm_get(host);
- ret = sdhci_do_get_cd(host);
- sdhci_runtime_pm_put(host);
- return ret;
+ return sdhci_do_get_cd(host);
}
static int sdhci_check_ro(struct sdhci_host *host)
static int sdhci_get_ro(struct mmc_host *mmc)
{
struct sdhci_host *host = mmc_priv(mmc);
- int ret;
- sdhci_runtime_pm_get(host);
- ret = sdhci_do_get_ro(host);
- sdhci_runtime_pm_put(host);
- return ret;
+ return sdhci_do_get_ro(host);
}
static void sdhci_enable_sdio_irq_nolock(struct sdhci_host *host, int enable)
struct sdhci_host *host = mmc_priv(mmc);
unsigned long flags;
- sdhci_runtime_pm_get(host);
-
spin_lock_irqsave(&host->lock, flags);
if (enable)
host->flags |= SDHCI_SDIO_IRQ_ENABLED;
sdhci_enable_sdio_irq_nolock(host, enable);
spin_unlock_irqrestore(&host->lock, flags);
-
- sdhci_runtime_pm_put(host);
}
static int sdhci_do_start_signal_voltage_switch(struct sdhci_host *host,
struct mmc_ios *ios)
{
struct sdhci_host *host = mmc_priv(mmc);
- int err;
if (host->version < SDHCI_SPEC_300)
return 0;
- sdhci_runtime_pm_get(host);
- err = sdhci_do_start_signal_voltage_switch(host, ios);
- sdhci_runtime_pm_put(host);
- return err;
+
+ return sdhci_do_start_signal_voltage_switch(host, ios);
}
static int sdhci_card_busy(struct mmc_host *mmc)
struct sdhci_host *host = mmc_priv(mmc);
u32 present_state;
- sdhci_runtime_pm_get(host);
/* Check whether DAT[3:0] is 0000 */
present_state = sdhci_readl(host, SDHCI_PRESENT_STATE);
- sdhci_runtime_pm_put(host);
return !(present_state & SDHCI_DATA_LVL_MASK);
}
unsigned int tuning_count = 0;
bool hs400_tuning;
- sdhci_runtime_pm_get(host);
spin_lock_irqsave(&host->lock, flags);
hs400_tuning = host->flags & SDHCI_HS400_TUNING;
if (host->ops->platform_execute_tuning) {
spin_unlock_irqrestore(&host->lock, flags);
err = host->ops->platform_execute_tuning(host, opcode);
- sdhci_runtime_pm_put(host);
return err;
}
sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE);
out_unlock:
spin_unlock_irqrestore(&host->lock, flags);
- sdhci_runtime_pm_put(host);
-
return err;
}
spin_unlock_irqrestore(&host->lock, flags);
mmc_request_done(host->mmc, mrq);
- sdhci_runtime_pm_put(host);
}
static void sdhci_timeout_timer(unsigned long data)
EXPORT_SYMBOL_GPL(sdhci_resume_host);
-static int sdhci_runtime_pm_get(struct sdhci_host *host)
-{
- return pm_runtime_get_sync(host->mmc->parent);
-}
-
-static int sdhci_runtime_pm_put(struct sdhci_host *host)
-{
- pm_runtime_mark_last_busy(host->mmc->parent);
- return pm_runtime_put_autosuspend(host->mmc->parent);
-}
-
-static void sdhci_runtime_pm_bus_on(struct sdhci_host *host)
-{
- if (host->bus_on)
- return;
- host->bus_on = true;
- pm_runtime_get_noresume(host->mmc->parent);
-}
-
-static void sdhci_runtime_pm_bus_off(struct sdhci_host *host)
-{
- if (!host->bus_on)
- return;
- host->bus_on = false;
- pm_runtime_put_noidle(host->mmc->parent);
-}
-
int sdhci_runtime_suspend_host(struct sdhci_host *host)
{
unsigned long flags;
projects / deliverable / linux.git / blobdiff