From: Egbert Eich Date: Wed, 24 Oct 2012 16:31:19 +0000 (+0200) Subject: DRM/Radeon: Fix primary DAC Load Detection for RV100 chips. X-Git-Tag: v3.7-rc4~4^2~2^2~7 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=9c50b1d937cc9656100ba10d9f57484c6d173936;p=linux.git DRM/Radeon: Fix primary DAC Load Detection for RV100 chips. For Radeon 7500 ATI recommends a DAC_FORCE value of 0x1ac. This value works better on ES1000 (RV100) chips, too, as it doesn't produce any false positives on any cards I have tested. Therefore let's assume that this value is good for all RV100 and RV200 chipset generations. Signed-off-by: Egbert Eich Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/radeon/radeon_legacy_encoders.c b/drivers/gpu/drm/radeon/radeon_legacy_encoders.c index f278f20ea12a..5fdc67bd25d9 100644 --- a/drivers/gpu/drm/radeon/radeon_legacy_encoders.c +++ b/drivers/gpu/drm/radeon/radeon_legacy_encoders.c @@ -662,6 +662,8 @@ static enum drm_connector_status radeon_legacy_primary_dac_detect(struct drm_enc if (ASIC_IS_R300(rdev)) tmp |= (0x1b6 << RADEON_DAC_FORCE_DATA_SHIFT); + else if (ASIC_IS_RV100(rdev)) + tmp |= (0x1ac << RADEON_DAC_FORCE_DATA_SHIFT); else tmp |= (0x180 << RADEON_DAC_FORCE_DATA_SHIFT);