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>
diff --git a/drivers/gpu/drm/drm_crtc_helper.c b/drivers/gpu/drm/drm_crtc_helper.c
index 9b2a541..fa1323f 100644
--- a/drivers/gpu/drm/drm_crtc_helper.c
+++ b/drivers/gpu/drm/drm_crtc_helper.c
@@ -241,7 +241,10 @@
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;
}
}
diff --git a/include/drm/drm_crtc_helper.h b/include/drm/drm_crtc_helper.h
index 1121f77..7e3c976 100644
--- a/include/drm/drm_crtc_helper.h
+++ b/include/drm/drm_crtc_helper.h
@@ -63,6 +63,9 @@
/* 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 {