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drm: mxsfb: Implement drm_panel handling

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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 <[email protected]>
Suggested-by: Thierry Reding <[email protected]>
Signed-off-by: Fabio Estevam <[email protected]>
Tested-by: Marek Vasut <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
This commit is contained in:
Fabio Estevam 2017-02-01 15:19:47 -02:00 • committed by Dave Airlie
commit 3f81e13407
1 changed files with 4 additions and 0 deletions
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4
drivers/gpu/drm/mxsfb/mxsfb_drv.c
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@ -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,