blob: 3b631361a15ee4ba6491f0b8960f0e18044e2cf0 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
|
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
--- a/drivers/gpu/drm/i915/intel_tv.c
+++ b/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);
|
