Currently when the 'power-supply' regulator is passed via device tree
it does not actually work since drm_panel_prepare()/drm_panel_enable()
are never called.
Quoting Thierry Reding: "It should really call drm_panel_prepare() and
drm_panel_enable() while switching on the display pipeline and
drm_panel_disable(), followed by drm_panel_unprepare() while switching
off the display pipeline."
So do as suggested, so that the 'power-supply' regulator can be functional.
Reported-by: Breno Lima <breno.lima@xxxxxxx>
Suggested-by: Thierry Reding <thierry.reding@xxxxxxxxx>
Signed-off-by: Fabio Estevam <fabio.estevam@xxxxxxx>
---
drivers/gpu/drm/mxsfb/mxsfb_drv.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/mxsfb/mxsfb_drv.c b/drivers/gpu/drm/mxsfb/mxsfb_drv.c
index 955441f..766538f8 100644
--- a/drivers/gpu/drm/mxsfb/mxsfb_drv.c
+++ b/drivers/gpu/drm/mxsfb/mxsfb_drv.c
@@ -102,14 +102,18 @@ static void mxsfb_pipe_enable(struct drm_simple_display_pipe *pipe,
{
struct mxsfb_drm_private *mxsfb = drm_pipe_to_mxsfb_drm_private(pipe);
+ drm_panel_prepare(mxsfb->panel);
mxsfb_crtc_enable(mxsfb);
+ drm_panel_enable(mxsfb->panel);
}
static void mxsfb_pipe_disable(struct drm_simple_display_pipe *pipe)
{
struct mxsfb_drm_private *mxsfb = drm_pipe_to_mxsfb_drm_private(pipe);
+ drm_panel_disable(mxsfb->panel);
mxsfb_crtc_disable(mxsfb);
+ drm_panel_unprepare(mxsfb->panel);
}
static void mxsfb_pipe_update(struct drm_simple_display_pipe *pipe,
--
2.7.4
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