From 5099fa7f23d3711538cbe9fe072b4ce1ba814035 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Mon, 12 Jul 2010 17:33:50 -0400 Subject: [PATCH] drm/radeon/kms: fix possible mis-detection of sideport on rs690/rs740 Check ulBootUpMemoryClock on AMD IGPs. Fix regression noticed by Torsten Kaiser Signed-off-by: Alex Deucher Cc: stable@kernel.org Signed-off-by: Dave Airlie --- drivers/gpu/drm/radeon/radeon_atombios.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c index 99bd8a9..125155a 100644 --- a/drivers/gpu/drm/radeon/radeon_atombios.c +++ b/drivers/gpu/drm/radeon/radeon_atombios.c @@ -1029,8 +1029,15 @@ bool radeon_atombios_sideport_present(struct radeon_device *rdev) data_offset); switch (crev) { case 1: - if (igp_info->info.ucMemoryType & 0xf0) - return true; + /* AMD IGPS */ + if ((rdev->family == CHIP_RS690) || + (rdev->family == CHIP_RS740)) { + if (igp_info->info.ulBootUpMemoryClock) + return true; + } else { + if (igp_info->info.ucMemoryType & 0xf0) + return true; + } break; case 2: if (igp_info->info_2.ucMemoryType & 0x0f) -- 2.7.4