From: Jesse Barnes <jbarnes@virtuousgeek.org>
Date: Fri, 24 Jun 2011 19:19:27 +0000 (-0700)
Subject: drm/i915: check for supported depth at fb init time
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=b5626747eca6d02124544d1d69049220f1c01fb1;p=linux-beck.git

drm/i915: check for supported depth at fb init time

This will catch bad fb configs earlier.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Keith Packard <keithp@keithp.com>
---

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index c166a88e426b..af3e5813366c 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -7061,6 +7061,11 @@ int intel_framebuffer_init(struct drm_device *dev,
 	switch (mode_cmd->bpp) {
 	case 8:
 	case 16:
+		/* Only pre-ILK can handle 5:5:5 */
+		if (mode_cmd->depth == 15 && !HAS_PCH_SPLIT(dev))
+			return -EINVAL;
+		break;
+
 	case 24:
 	case 32:
 		break;