From: Tony Lindgren tony@atomide.com
[ Upstream commit da38ef3ed10a09248e13ae16530c2c6d448dc47d ]
We are currently assuming all GPIOs are non-wakeup capable GPIOs as we not configuring the bank->non_wakeup_gpios like we used to earlier with platform_data.
Let's add omap_gpio_is_off_wakeup_capable() to make the handling clearer while considering that later patches may want to configure SoC specific bank->non_wakeup_gpios for the GPIOs in wakeup domain.
Cc: Aaro Koskinen aaro.koskinen@iki.fi Cc: Grygorii Strashko grygorii.strashko@ti.com Cc: Keerthy j-keerthy@ti.com Cc: Peter Ujfalusi peter.ujfalusi@ti.com Cc: Russell King rmk+kernel@armlinux.org.uk Cc: Tero Kristo t-kristo@ti.com Reported-by: Grygorii Strashko grygorii.strashko@ti.com Signed-off-by: Tony Lindgren tony@atomide.com Signed-off-by: Bartosz Golaszewski bgolaszewski@baylibre.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpio/gpio-omap.c | 25 +++++++++++++++++-------- 1 file changed, 17 insertions(+), 8 deletions(-)
diff --git a/drivers/gpio/gpio-omap.c b/drivers/gpio/gpio-omap.c index 9943273ec9818..c8c49b1d5f9f9 100644 --- a/drivers/gpio/gpio-omap.c +++ b/drivers/gpio/gpio-omap.c @@ -292,6 +292,22 @@ static void omap_clear_gpio_debounce(struct gpio_bank *bank, unsigned offset) } }
+/* + * Off mode wake-up capable GPIOs in bank(s) that are in the wakeup domain. + * See TRM section for GPIO for "Wake-Up Generation" for the list of GPIOs + * in wakeup domain. If bank->non_wakeup_gpios is not configured, assume none + * are capable waking up the system from off mode. + */ +static bool omap_gpio_is_off_wakeup_capable(struct gpio_bank *bank, u32 gpio_mask) +{ + u32 no_wake = bank->non_wakeup_gpios; + + if (no_wake) + return !!(~no_wake & gpio_mask); + + return false; +} + static inline void omap_set_gpio_trigger(struct gpio_bank *bank, int gpio, unsigned trigger) { @@ -323,13 +339,7 @@ static inline void omap_set_gpio_trigger(struct gpio_bank *bank, int gpio, }
/* This part needs to be executed always for OMAP{34xx, 44xx} */ - if (!bank->regs->irqctrl) { - /* On omap24xx proceed only when valid GPIO bit is set */ - if (bank->non_wakeup_gpios) { - if (!(bank->non_wakeup_gpios & gpio_bit)) - goto exit; - } - + if (!bank->regs->irqctrl && !omap_gpio_is_off_wakeup_capable(bank, gpio)) { /* * Log the edge gpio and manually trigger the IRQ * after resume if the input level changes @@ -342,7 +352,6 @@ static inline void omap_set_gpio_trigger(struct gpio_bank *bank, int gpio, bank->enabled_non_wakeup_gpios &= ~gpio_bit; }
-exit: bank->level_mask = readl_relaxed(bank->base + bank->regs->leveldetect0) | readl_relaxed(bank->base + bank->regs->leveldetect1);