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DRM/Radeon: Clean up code in TV DAC load detection. 

Signed-off-by: Egbert Eich <eich@suse.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Egbert Eich 2012-10-30 17:42:26 +01:00 committed by Alex Deucher
parent dfdcbebc54
commit d038db8698
1 changed files with 10 additions and 8 deletions
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18
drivers/gpu/drm/radeon/radeon_legacy_encoders.c
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@ -1425,7 +1425,8 @@ static enum drm_connector_status radeon_legacy_tv_dac_detect(struct drm_encoder
struct drm_device *dev = encoder->dev;
struct radeon_device *rdev = dev->dev_private;
uint32_t crtc2_gen_cntl, tv_dac_cntl, dac_cntl2, dac_ext_cntl;
uint32_t disp_hw_debug, disp_output_cntl, gpiopad_a, pixclks_cntl, tmp;
uint32_t gpiopad_a = 0, pixclks_cntl, tmp;
uint32_t disp_output_cntl = 0, disp_hw_debug = 0;
enum drm_connector_status found = connector_status_disconnected;
struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
struct radeon_encoder_tv_dac *tv_dac = radeon_encoder->enc_priv;
@ -1464,9 +1465,12 @@ static enum drm_connector_status radeon_legacy_tv_dac_detect(struct drm_encoder
/* save the regs we need */
pixclks_cntl = RREG32_PLL(RADEON_PIXCLKS_CNTL);
gpiopad_a = ASIC_IS_R300(rdev) ? RREG32(RADEON_GPIOPAD_A) : 0;
disp_output_cntl = ASIC_IS_R300(rdev) ? RREG32(RADEON_DISP_OUTPUT_CNTL) : 0;
disp_hw_debug = ASIC_IS_R300(rdev) ? 0 : RREG32(RADEON_DISP_HW_DEBUG);
if (ASIC_IS_R300(rdev)) {
gpiopad_a = RREG32(RADEON_GPIOPAD_A);
disp_output_cntl = RREG32(RADEON_DISP_OUTPUT_CNTL);
} else {
disp_hw_debug = RREG32(RADEON_DISP_HW_DEBUG);
}
crtc2_gen_cntl = RREG32(RADEON_CRTC2_GEN_CNTL);
tv_dac_cntl = RREG32(RADEON_TV_DAC_CNTL);
dac_ext_cntl = RREG32(RADEON_DAC_EXT_CNTL);
@ -1476,16 +1480,13 @@ static enum drm_connector_status radeon_legacy_tv_dac_detect(struct drm_encoder
| RADEON_PIX2CLK_DAC_ALWAYS_ONb);
WREG32_PLL(RADEON_PIXCLKS_CNTL, tmp);
if (ASIC_IS_R300(rdev))
WREG32_P(RADEON_GPIOPAD_A, 1, ~1);
tmp = crtc2_gen_cntl & ~RADEON_CRTC2_PIX_WIDTH_MASK;
tmp |= RADEON_CRTC2_CRT2_ON |
(2 << RADEON_CRTC2_PIX_WIDTH_SHIFT);
WREG32(RADEON_CRTC2_GEN_CNTL, tmp);
if (ASIC_IS_R300(rdev)) {
WREG32_P(RADEON_GPIOPAD_A, 1, ~1);
tmp = disp_output_cntl & ~RADEON_DISP_TVDAC_SOURCE_MASK;
tmp |= RADEON_DISP_TVDAC_SOURCE_CRTC2;
WREG32(RADEON_DISP_OUTPUT_CNTL, tmp);
@ -1541,6 +1542,7 @@ static enum drm_connector_status radeon_legacy_tv_dac_detect(struct drm_encoder
} else {
WREG32(RADEON_DISP_HW_DEBUG, disp_hw_debug);
}
WREG32_PLL(RADEON_PIXCLKS_CNTL, pixclks_cntl);
return found;