drm/radeon: fix dual-head on rv250
Plugged in FireMV with the rv250 on it, and the second crtc/dac didn't work,
we were reading/writing different registers than we were modifying in the code.
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/radeon/radeon_legacy_encoders.c b/drivers/gpu/drm/radeon/radeon_legacy_encoders.c
index 5b07b88..bad77f4 100644
--- a/drivers/gpu/drm/radeon/radeon_legacy_encoders.c
+++ b/drivers/gpu/drm/radeon/radeon_legacy_encoders.c
@@ -928,16 +928,14 @@
if (ASIC_IS_R300(rdev)) {
gpiopad_a = RREG32(RADEON_GPIOPAD_A) | 1;
disp_output_cntl = RREG32(RADEON_DISP_OUTPUT_CNTL);
- }
-
- if (rdev->family == CHIP_R200 || ASIC_IS_R300(rdev))
- disp_tv_out_cntl = RREG32(RADEON_DISP_TV_OUT_CNTL);
- else
+ } else if (rdev->family != CHIP_R200)
disp_hw_debug = RREG32(RADEON_DISP_HW_DEBUG);
-
- if (rdev->family == CHIP_R200)
+ else if (rdev->family == CHIP_R200)
fp2_gen_cntl = RREG32(RADEON_FP2_GEN_CNTL);
+ if (rdev->family >= CHIP_R200)
+ disp_tv_out_cntl = RREG32(RADEON_DISP_TV_OUT_CNTL);
+
if (is_tv) {
uint32_t dac_cntl;
@@ -1002,15 +1000,13 @@
if (ASIC_IS_R300(rdev)) {
WREG32_P(RADEON_GPIOPAD_A, gpiopad_a, ~1);
WREG32(RADEON_DISP_OUTPUT_CNTL, disp_output_cntl);
- }
+ } else if (rdev->family != CHIP_R200)
+ WREG32(RADEON_DISP_HW_DEBUG, disp_hw_debug);
+ else if (rdev->family == CHIP_R200)
+ WREG32(RADEON_FP2_GEN_CNTL, fp2_gen_cntl);
if (rdev->family >= CHIP_R200)
WREG32(RADEON_DISP_TV_OUT_CNTL, disp_tv_out_cntl);
- else
- WREG32(RADEON_DISP_HW_DEBUG, disp_hw_debug);
-
- if (rdev->family == CHIP_R200)
- WREG32(RADEON_FP2_GEN_CNTL, fp2_gen_cntl);
if (is_tv)
radeon_legacy_tv_mode_set(encoder, mode, adjusted_mode);