From: Hoan Nguyen An <na-hoan@xxxxxxxxxxx>
Enter Standby Mode before suspend by drm
We will not need to "Release from Module Standby Mode"
because after resume() is called, this is done.
Signed-off-by: Hoan Nguyen An <na-hoan@xxxxxxxxxxx>
---
drivers/gpu/drm/rcar-du/rcar_du_drv.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.c b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
index 32dba13..1ab3f56 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_drv.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
@@ -426,6 +426,20 @@ static struct drm_driver rcar_du_driver = {
static int rcar_du_pm_suspend(struct device *dev)
{
struct rcar_du_device *rcdu = dev_get_drvdata(dev);
+ int ret;
+ unsigned int i = 0;
+
+ for (i = 0; i < rcdu->num_crtcs; i++)
+ {
+ struct rcar_du_crtc *rcrtc = &rcdu->crtcs[i];
+
+ ret = rcar_du_crtc_standby(rcrtc);
+ if(ret)
+ {
+ dev_err(dev, "failed to enter Standby mode\n");
+ return ret;
+ }
+ }
return drm_mode_config_helper_suspend(rcdu->ddev);
}
--
2.7.4
