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drm/kms: add crtc disable function 

More explicit than dpms. Same as the encoder disable function.

Need this to explicity disconnect plls from crtcs for reuse when you
plls:crtcs ratio isn't 1:1.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alex Deucher 2010-06-11 17:04:35 -04:00 committed by Dave Airlie
parent a907a2e7d2
commit 5c8d7171cc
2 changed files with 7 additions and 1 deletions
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5
drivers/gpu/drm/drm_crtc_helper.c
View File

@ -241,7 +241,10 @@ void drm_helper_disable_unused_functions(struct drm_device *dev)
struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
crtc->enabled = drm_helper_crtc_in_use(crtc);
if (!crtc->enabled) {
crtc_funcs->dpms(crtc, DRM_MODE_DPMS_OFF);
if (crtc_funcs->disable)
(*crtc_funcs->disable)(crtc);
else
(*crtc_funcs->dpms)(crtc, DRM_MODE_DPMS_OFF);
crtc->fb = NULL;
}
}

3
include/drm/drm_crtc_helper.h
View File

@ -63,6 +63,9 @@ struct drm_crtc_helper_funcs {
/* reload the current crtc LUT */
void (*load_lut)(struct drm_crtc *crtc);
/* disable crtc when not in use - more explicit than dpms off */
void (*disable)(struct drm_crtc *crtc);
};
struct drm_encoder_helper_funcs {