diff options
Diffstat (limited to 'drivers/gpio')
| -rw-r--r-- | drivers/gpio/gpio-omap.c | 29 |
1 files changed, 19 insertions, 10 deletions
diff --git a/drivers/gpio/gpio-omap.c b/drivers/gpio/gpio-omap.c index d483cc9f0c63..69e61aecab71 100644 --- a/drivers/gpio/gpio-omap.c +++ b/drivers/gpio/gpio-omap.c @@ -67,6 +67,7 @@ struct gpio_bank { struct clk *dbck; u32 mod_usage; u32 dbck_enable_mask; + bool dbck_enabled; struct device *dev; bool is_mpuio; bool dbck_flag; @@ -158,6 +159,22 @@ static inline void _gpio_rmw(void __iomem *base, u32 reg, u32 mask, bool set) __raw_writel(l, base + reg); } +static inline void _gpio_dbck_enable(struct gpio_bank *bank) +{ + if (bank->dbck_enable_mask && !bank->dbck_enabled) { + clk_enable(bank->dbck); + bank->dbck_enabled = true; + } +} + +static inline void _gpio_dbck_disable(struct gpio_bank *bank) +{ + if (bank->dbck_enable_mask && bank->dbck_enabled) { + clk_disable(bank->dbck); + bank->dbck_enabled = false; + } +} + /** * _set_gpio_debounce - low level gpio debounce time * @bank: the gpio bank we're acting upon @@ -1178,6 +1195,7 @@ save_gpio_context: bank->get_context_loss_count(bank->dev); omap_gpio_save_context(bank); + _gpio_dbck_disable(bank); spin_unlock_irqrestore(&bank->lock, flags); return 0; @@ -1192,6 +1210,7 @@ static int omap_gpio_runtime_resume(struct device *dev) unsigned long flags; spin_lock_irqsave(&bank->lock, flags); + _gpio_dbck_enable(bank); if (!bank->enabled_non_wakeup_gpios || !bank->workaround_enabled) { spin_unlock_irqrestore(&bank->lock, flags); return 0; @@ -1274,16 +1293,11 @@ void omap2_gpio_prepare_for_idle(int pwr_mode) struct gpio_bank *bank; list_for_each_entry(bank, &omap_gpio_list, node) { - int j; - if (!bank->mod_usage || !bank->loses_context) continue; bank->power_mode = pwr_mode; - for (j = 0; j < hweight_long(bank->dbck_enable_mask); j++) - clk_disable(bank->dbck); - pm_runtime_put_sync_suspend(bank->dev); } } @@ -1293,14 +1307,9 @@ void omap2_gpio_resume_after_idle(void) struct gpio_bank *bank; list_for_each_entry(bank, &omap_gpio_list, node) { - int j; - if (!bank->mod_usage || !bank->loses_context) continue; - for (j = 0; j < hweight_long(bank->dbck_enable_mask); j++) - clk_enable(bank->dbck); - pm_runtime_get_sync(bank->dev); } } |