From: Ben Skeggs <bskeggs@redhat.com>
Date: Fri, 4 May 2012 14:39:21 +0000 (+1000)
Subject: drm/nouveau/disp: fix dithering not being enabled on some eDP macbooks
X-Git-Tag: v3.5-rc1~100^2^2~6
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=a6a17859f1bdf607650ee055101f54c5f207762b;p=karo-tx-linux.git

drm/nouveau/disp: fix dithering not being enabled on some eDP macbooks

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
---

diff --git a/drivers/gpu/drm/nouveau/nouveau_connector.c b/drivers/gpu/drm/nouveau/nouveau_connector.c
index fa860358add1..7b11edb077d0 100644
--- a/drivers/gpu/drm/nouveau/nouveau_connector.c
+++ b/drivers/gpu/drm/nouveau/nouveau_connector.c
@@ -654,7 +654,13 @@ nouveau_connector_detect_depth(struct drm_connector *connector)
 	if (nv_connector->edid && connector->display_info.bpc)
 		return;
 
-	/* if not, we're out of options unless we're LVDS, default to 8bpc */
+	/* EDID 1.4 is *supposed* to be supported on eDP, but, Apple... */
+	if (nv_connector->type == DCB_CONNECTOR_eDP) {
+		connector->display_info.bpc = 6;
+		return;
+	}
+
+	/* we're out of options unless we're LVDS, default to 8bpc */
 	if (nv_encoder->dcb->type != OUTPUT_LVDS) {
 		connector->display_info.bpc = 8;
 		return;