From: Alex Deucher <alexander.deucher@amd.com>
Date: Sat, 23 Jul 2011 18:02:04 +0000 (+0000)
Subject: drm/radeon/kms: fix i2c map for rv250/280
X-Git-Tag: firefly_0821_release~7541^2~3078
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=eec8f481cc0114fd86b2b3d5258b4933cd731571;p=firefly-linux-kernel-4.4.55.git

drm/radeon/kms: fix i2c map for rv250/280

commit 6dd666333ddee39903d86f870d5c40d9f100e0cc upstream.

Those chips have crt2_ddc bus.

Fixes:
https://bugzilla.kernel.org/show_bug.cgi?id=39672

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/drivers/gpu/drm/radeon/radeon_combios.c b/drivers/gpu/drm/radeon/radeon_combios.c
index e4594676a07c..a74217cd192f 100644
--- a/drivers/gpu/drm/radeon/radeon_combios.c
+++ b/drivers/gpu/drm/radeon/radeon_combios.c
@@ -779,7 +779,8 @@ void radeon_combios_i2c_init(struct radeon_device *rdev)
 				}
 			}
 		}
-	} else if (rdev->family >= CHIP_R200) {
+	} else if ((rdev->family == CHIP_R200) ||
+		   (rdev->family >= CHIP_R300)) {
 		/* 0x68 */
 		i2c = combios_setup_i2c_bus(rdev, DDC_MONID, 0, 0);
 		rdev->i2c_bus[3] = radeon_i2c_create(dev, &i2c, "MONID");