27 lines
793 B
Diff
27 lines
793 B
Diff
Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
|
|
Tested-by: Santi <santi@agolina.net>
|
|
---
|
|
drivers/gpu/drm/i915/intel_tv.c | 9 +++++++++
|
|
1 files changed, 9 insertions(+), 0 deletions(-)
|
|
|
|
diff --git a/drivers/gpu/drm/i915/intel_tv.c b/drivers/gpu/drm/i915/intel_tv.c
|
|
index dc83b7a..c8f67bf 100644
|
|
--- drivers/gpu/drm/i915/intel_tv.c
|
|
+++ drivers/gpu/drm/i915/intel_tv.c
|
|
@@ -1267,6 +1267,15 @@
|
|
DAC_B_0_7_V |
|
|
DAC_C_0_7_V);
|
|
|
|
+ /*
|
|
+ * The TV sense state should be cleared to zero on cantiga platform. Otherwise
|
|
+ * the TV is misdetected. This is hardware requirement.
|
|
+ */
|
|
+ if (IS_GM45(dev))
|
|
+ tv_dac &= ~(TVDAC_STATE_CHG_EN | TVDAC_A_SENSE_CTL |
|
|
+ TVDAC_B_SENSE_CTL | TVDAC_C_SENSE_CTL);
|
|
+
|
|
+
|
|
I915_WRITE(TV_CTL, tv_ctl);
|
|
I915_WRITE(TV_DAC, tv_dac);
|
|
POSTING_READ(TV_DAC);
|