From: "Thulasimani,Sivakumar" <sivakumar.thulasim...@intel.com>
sink count can change between short pulse hpd hence this patch
adds a member variable to intel_dp so we can track any changes
between short pulse interrupts.
Signed-off-by: Sivakumar Thulasimani <sivakumar.thulasim...@intel.com>
---
drivers/gpu/drm/i915/intel_dp.c | 5 ++---
drivers/gpu/drm/i915/intel_drv.h | 1 +
2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 9e4e27d..834f513 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -3898,7 +3898,6 @@ intel_dp_get_dpcd(struct intel_dp *intel_dp)
struct drm_device *dev = dig_port->base.base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
uint8_t rev;
- uint8_t reg;
if (intel_dp_dpcd_read_wake(&intel_dp->aux, 0x000, intel_dp->dpcd,
sizeof(intel_dp->dpcd)) < 0)
@@ -3910,10 +3909,10 @@ intel_dp_get_dpcd(struct intel_dp *intel_dp)
return false; /* DPCD not present */
if (intel_dp_dpcd_read_wake(&intel_dp->aux, DP_SINK_COUNT,
- ®, 1) < 0)
+ &intel_dp->sink_count, 1) < 0)
return false;
- if (!DP_GET_SINK_COUNT(reg))
+ if (!DP_GET_SINK_COUNT(intel_dp->sink_count))
return false;
/* Check if the panel supports PSR */
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 81b7d77..8aca5bb 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -712,6 +712,7 @@ struct intel_dp {
enum hdmi_force_audio force_audio;
bool limited_color_range;
bool color_range_auto;
+ uint8_t sink_count;
uint8_t dpcd[DP_RECEIVER_CAP_SIZE];
uint8_t psr_dpcd[EDP_PSR_RECEIVER_CAP_SIZE];
uint8_t downstream_ports[DP_MAX_DOWNSTREAM_PORTS];
--
1.7.9.5
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