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drm: rcar-du: Clamp DPMS states to on and off 

The intermediate DPMS standby and suspend states are a thing from the
past. They only matter in practice for VGA CRT monitors, and are just a
power saving vs. resume time optimization. Given that they have never
been implemented properly in the rcar-du driver and that the Intel
driver has dropped them on the vga port years ago, it's safe to only
care about the on and off states.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
This commit is contained in:
Laurent Pinchart 2014-12-09 13:19:10 +02:00
parent 2d60762ade
commit 3dbf11e421
3 changed files with 9 additions and 0 deletions
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3
drivers/gpu/drm/rcar-du/rcar_du_crtc.c
View File

@ -347,6 +347,9 @@ static void rcar_du_crtc_dpms(struct drm_crtc *crtc, int mode)
{
struct rcar_du_crtc *rcrtc = to_rcar_crtc(crtc);
if (mode != DRM_MODE_DPMS_ON)
mode = DRM_MODE_DPMS_OFF;
if (rcrtc->dpms == mode)
return;

3
drivers/gpu/drm/rcar-du/rcar_du_encoder.c
View File

@ -46,6 +46,9 @@ static void rcar_du_encoder_dpms(struct drm_encoder *encoder, int mode)
{
struct rcar_du_encoder *renc = to_rcar_encoder(encoder);
if (mode != DRM_MODE_DPMS_ON)
mode = DRM_MODE_DPMS_OFF;
if (renc->lvds)
rcar_du_lvdsenc_dpms(renc->lvds, encoder->crtc, mode);
}

3
drivers/gpu/drm/rcar-du/rcar_du_hdmienc.c
View File

@ -37,6 +37,9 @@ static void rcar_du_hdmienc_dpms(struct drm_encoder *encoder, int mode)
struct rcar_du_hdmienc *hdmienc = to_rcar_hdmienc(encoder);
struct drm_encoder_slave_funcs *sfuncs = to_slave_funcs(encoder);
if (mode != DRM_MODE_DPMS_ON)
mode = DRM_MODE_DPMS_OFF;
if (hdmienc->dpms == mode)
return;