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drm/radeon/kms: fix possible mis-detection of sideport on rs690/rs740

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Check ulBootUpMemoryClock on AMD IGPs.

Fix regression noticed by Torsten Kaiser <just.for.lkml@googlemail.com>

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alex Deucher 2010-07-12 17:33:50 -04:00 committed by Dave Airlie
parent ff3f011cd8
commit 5099fa7f23
1 changed files with 9 additions and 2 deletions
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11
drivers/gpu/drm/radeon/radeon_atombios.c
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@ -1029,8 +1029,15 @@ bool radeon_atombios_sideport_present(struct radeon_device *rdev)
data_offset); data_offset);
switch (crev) { switch (crev) {
case 1: case 1:
if (igp_info->info.ucMemoryType & 0xf0) /* AMD IGPS */
return true; 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; break;
case 2: case 2:
if (igp_info->info_2.ucMemoryType & 0x0f) if (igp_info->info_2.ucMemoryType & 0x0f)