drm/bridge: anx7625: add suspend / resume hooks

Add suspend / resume hooks for anx7625 driver, that power off the device
on suspend and power on the device on resume if it was previously
powered.

Signed-off-by: Pi-Hsun Shih <pihsun@chromium.org>
Reviewed-by: Tzung-Bi Shih <tzungbi@google.com>
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210517063553.554955-2-pihsun@chromium.org

diff --git a/drivers/gpu/drm/bridge/analogix/anx7625.c b/drivers/gpu/drm/bridge/analogix/anx7625.c
index d6ad2ba..29493cc 100644 (file)
--- a/drivers/gpu/drm/bridge/analogix/anx7625.c
+++ b/drivers/gpu/drm/bridge/analogix/anx7625.c
@@ -1705,7 +1705,39 @@ static int __maybe_unused anx7625_runtime_pm_resume(struct device *dev)
        return 0;
 }
 
+static int __maybe_unused anx7625_resume(struct device *dev)
+{
+       struct anx7625_data *ctx = dev_get_drvdata(dev);
+
+       if (!ctx->pdata.intp_irq)
+               return 0;
+
+       if (!pm_runtime_enabled(dev) || !pm_runtime_suspended(dev)) {
+               enable_irq(ctx->pdata.intp_irq);
+               anx7625_runtime_pm_resume(dev);
+       }
+
+       return 0;
+}
+
+static int __maybe_unused anx7625_suspend(struct device *dev)
+{
+       struct anx7625_data *ctx = dev_get_drvdata(dev);
+
+       if (!ctx->pdata.intp_irq)
+               return 0;
+
+       if (!pm_runtime_enabled(dev) || !pm_runtime_suspended(dev)) {
+               anx7625_runtime_pm_suspend(dev);
+               disable_irq(ctx->pdata.intp_irq);
+               flush_workqueue(ctx->workqueue);
+       }
+
+       return 0;
+}
+
 static const struct dev_pm_ops anx7625_pm_ops = {
+       SET_SYSTEM_SLEEP_PM_OPS(anx7625_suspend, anx7625_resume)
        SET_RUNTIME_PM_OPS(anx7625_runtime_pm_suspend,
                           anx7625_runtime_pm_resume, NULL)
 };