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| author | Leonard Crestez <leonard.crestez@nxp.com> | 2018-09-17 16:42:13 +0300 |
|---|---|---|
| committer | Stefan Agner <stefan@agner.ch> | 2018-09-26 23:07:40 +0300 |
| commit | 4201f4e8484509499a40feb9fd6a6642f453f61e (patch) | |
| tree | 90aa701ce4524c091b6ac331c3d2b3a1b8337358 /drivers/gpu | |
| parent | 2dc3620eac2df1545bc4a4b9110dcc7961c24a50 (diff) | |
| download | linux-4201f4e8484509499a40feb9fd6a6642f453f61e.tar.xz | |
drm/mxsfb: Add pm_runtime calls to pipe_enable/disable
Adding lcdif nodes to a power domain currently results in
black/corrupted screens or hangs because power is not correctly enabled
when required.
Ensure power is on when display is active by adding
pm_runtime_get/put_sync to mxsfb_pipe_enable/disable.
Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Reviewed-by: Stefan Agner <stefan@agner.ch>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Stefan Agner <stefan@agner.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/ee88148399c63494cda4129b05444b0ac331b7a7.1537191359.git.leonard.crestez@nxp.com
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/mxsfb/mxsfb_drv.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/mxsfb/mxsfb_drv.c b/drivers/gpu/drm/mxsfb/mxsfb_drv.c index ffe5137ccaf8..68d79f5dc0d3 100644 --- a/drivers/gpu/drm/mxsfb/mxsfb_drv.c +++ b/drivers/gpu/drm/mxsfb/mxsfb_drv.c @@ -103,7 +103,9 @@ static void mxsfb_pipe_enable(struct drm_simple_display_pipe *pipe, struct drm_plane_state *plane_state) { struct mxsfb_drm_private *mxsfb = drm_pipe_to_mxsfb_drm_private(pipe); + struct drm_device *drm = pipe->plane.dev; + pm_runtime_get_sync(drm->dev); drm_panel_prepare(mxsfb->panel); mxsfb_crtc_enable(mxsfb); drm_panel_enable(mxsfb->panel); @@ -112,10 +114,12 @@ static void mxsfb_pipe_enable(struct drm_simple_display_pipe *pipe, static void mxsfb_pipe_disable(struct drm_simple_display_pipe *pipe) { struct mxsfb_drm_private *mxsfb = drm_pipe_to_mxsfb_drm_private(pipe); + struct drm_device *drm = pipe->plane.dev; drm_panel_disable(mxsfb->panel); mxsfb_crtc_disable(mxsfb); drm_panel_unprepare(mxsfb->panel); + pm_runtime_put_sync(drm->dev); } static void mxsfb_pipe_update(struct drm_simple_display_pipe *pipe, |