From 46e484566fe4dc8a34e0ccc154e2f8b939b9ec96 Mon Sep 17 00:00:00 2001 From: Jesse Barnes Date: Fri, 24 Jun 2011 12:19:26 -0700 Subject: [PATCH] drm: bpp and depth changes require full mode sets To properly drive a framebuffer with a new depth or bpp, dither settings and link bandwidth calculations may change, so make sure we go through a full mode set in that case. Reported-by: Chris Wilson Signed-off-by: Jesse Barnes Reviewed-by: Chris Wilson Signed-off-by: Keith Packard --- drivers/gpu/drm/drm_crtc_helper.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/gpu/drm/drm_crtc_helper.c b/drivers/gpu/drm/drm_crtc_helper.c index 92369655dca3..f88a9b2c977b 100644 --- a/drivers/gpu/drm/drm_crtc_helper.c +++ b/drivers/gpu/drm/drm_crtc_helper.c @@ -560,6 +560,11 @@ int drm_crtc_helper_set_config(struct drm_mode_set *set) mode_changed = true; } else if (set->fb == NULL) { mode_changed = true; + } else if (set->fb->depth != set->crtc->fb->depth) { + mode_changed = true; + } else if (set->fb->bits_per_pixel != + set->crtc->fb->bits_per_pixel) { + mode_changed = true; } else fb_changed = true; } -- 2.34.1