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>

diff --git a/drivers/gpu/drm/radeon/radeon_legacy_encoders.c b/drivers/gpu/drm/radeon/radeon_legacy_encoders.c
index 5fdc67b..85a7307 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon_legacy_encoders.c
+++ b/drivers/gpu/drm/radeon/radeon_legacy_encoders.c
@@ -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;