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authorTony Lindgren <tony@atomide.com>2020-06-29 19:41:14 +0300
committerBartosz Golaszewski <bgolaszewski@baylibre.com>2020-06-30 12:02:45 +0300
commitf02a03985d06c5a39605a0b8a6206af0f9ec7b03 (patch)
tree7237e2da4ef9b6839dffeb2d79513d98e26ae007 /drivers/gpio/gpio-omap.c
parente4c6a52c64607d825b0e81c82e548d4cc8199e53 (diff)
downloadlinux-f02a03985d06c5a39605a0b8a6206af0f9ec7b03.tar.xz
gpio: omap: Add missing PM ops for suspend
We've had the legacy platform code take care of suspend for us but this no longer is the case when probed without legacy mode with ti-sysc. We need to configure PM ops like standard Linux device drivers do. As we still have some SoCs booting also the legacy mode, we need to add omap_gpio_suspend() and omap_gpio_resume(), and check for the is_suspended flag to avoid legacy _od_suspend_noirq() calling them on an already suspended GPIO instance. Once we have no SoCs booting in legacy mode, we can just switch to using the standard PM ops with pm_runtime_force_suspend() and pm_runtime_force_resume(). Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Diffstat (limited to 'drivers/gpio/gpio-omap.c')
-rw-r--r--drivers/gpio/gpio-omap.c26
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/gpio/gpio-omap.c b/drivers/gpio/gpio-omap.c
index b8e2ecc3eade..b3afe39027bd 100644
--- a/drivers/gpio/gpio-omap.c
+++ b/drivers/gpio/gpio-omap.c
@@ -60,6 +60,7 @@ struct gpio_bank {
struct clk *dbck;
struct notifier_block nb;
unsigned int is_suspended:1;
+ unsigned int needs_resume:1;
u32 mod_usage;
u32 irq_usage;
u32 dbck_enable_mask;
@@ -1504,9 +1505,34 @@ static int __maybe_unused omap_gpio_runtime_resume(struct device *dev)
return 0;
}
+static int omap_gpio_suspend(struct device *dev)
+{
+ struct gpio_bank *bank = dev_get_drvdata(dev);
+
+ if (bank->is_suspended)
+ return 0;
+
+ bank->needs_resume = 1;
+
+ return omap_gpio_runtime_suspend(dev);
+}
+
+static int omap_gpio_resume(struct device *dev)
+{
+ struct gpio_bank *bank = dev_get_drvdata(dev);
+
+ if (!bank->needs_resume)
+ return 0;
+
+ bank->needs_resume = 0;
+
+ return omap_gpio_runtime_resume(dev);
+}
+
static const struct dev_pm_ops gpio_pm_ops = {
SET_RUNTIME_PM_OPS(omap_gpio_runtime_suspend, omap_gpio_runtime_resume,
NULL)
+ SET_LATE_SYSTEM_SLEEP_PM_OPS(omap_gpio_suspend, omap_gpio_resume)
};
static struct platform_driver omap_gpio_driver = {