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drm/radeon/dpm: add reclocking quirk for ASUS K70AF 

The LCD has a relatively short vblank time (216us), but
the card is able to reclock memory fine in that time.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reported-by: normalrawr@gmail.com
This commit is contained in:
Alex Deucher 2013-08-12 11:24:05 -04:00
parent 942bdf7f9e
commit f75195cac3
1 changed files with 9 additions and 1 deletions
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10
drivers/gpu/drm/radeon/rv770_dpm.c
View File

@ -2517,8 +2517,16 @@ u32 rv770_dpm_get_mclk(struct radeon_device *rdev, bool low)
bool rv770_dpm_vblank_too_short(struct radeon_device *rdev)
{
u32 vblank_time = r600_dpm_get_vblank_time(rdev);
u32 switch_limit = 300;
if (vblank_time < 300)
/* quirks */
/* ASUS K70AF */
if ((rdev->pdev->device == 0x9553) &&
(rdev->pdev->subsystem_vendor == 0x1043) &&
(rdev->pdev->subsystem_device == 0x1c42))
switch_limit = 200;
if (vblank_time < switch_limit)
return true;
else
return false;