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drm/ast: Add an crtc_disable callback to the crtc helper funcs

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Implement the proper CRTC disablement, just like done in mgag200
driver.

Signed-off-by: Egbert Eich <eich@suse.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Egbert Eich 2017-07-18 16:47:39 +02:00 committed by Dave Airlie
parent b2d44e2381
commit ab209c32f5
1 changed files with 16 additions and 0 deletions
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16
drivers/gpu/drm/ast/ast_mode.c
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@ -613,7 +613,23 @@ static int ast_crtc_mode_set(struct drm_crtc *crtc,
static void ast_crtc_disable(struct drm_crtc *crtc)
{
int ret;
DRM_DEBUG_KMS("\n");
ast_crtc_dpms(crtc, DRM_MODE_DPMS_OFF);
if (crtc->primary->fb) {
struct ast_framebuffer *ast_fb = to_ast_framebuffer(crtc->primary->fb);
struct drm_gem_object *obj = ast_fb->obj;
struct ast_bo *bo = gem_to_ast_bo(obj);
ret = ast_bo_reserve(bo, false);
if (ret)
return;
ast_bo_push_sysram(bo);
ast_bo_unreserve(bo);
}
crtc->primary->fb = NULL;
}
static void ast_crtc_prepare(struct drm_crtc *crtc)