Prepare the panel before it's enabled and un-prepare after disable, this
will make sure that the regulators are switched on and off correctly.
Tested it on APQ8064 based IFC6410 with panel.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx>
---
drivers/gpu/drm/msm/mdp/mdp4/mdp4_lcdc_encoder.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_lcdc_encoder.c b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_lcdc_encoder.c
index c048433..4cd6e72 100644
--- a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_lcdc_encoder.c
+++ b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_lcdc_encoder.c
@@ -346,8 +346,10 @@ static void mdp4_lcdc_encoder_disable(struct drm_encoder *encoder)
mdp4_write(mdp4_kms, REG_MDP4_LCDC_ENABLE, 0);
- if (panel)
+ if (panel) {
drm_panel_disable(panel);
+ drm_panel_unprepare(panel);
+ }
/*
* Wait for a vsync so we know the ENABLE=0 latched before
@@ -412,8 +414,10 @@ static void mdp4_lcdc_encoder_enable(struct drm_encoder *encoder)
if (ret)
dev_err(dev->dev, "failed to enable lcdc_clk: %d\n", ret);
- if (panel)
+ if (panel) {
+ drm_panel_prepare(panel);
drm_panel_enable(panel);
+ }
setup_phy(encoder);
--
1.9.1
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