From: "Thulasimani,Sivakumar" <sivakumar.thulasim...@intel.com>
This patch fixes the bug that SKL SKUs before B0 might return
HBR2 as supported even though it is not supposed to be enabled
on such platforms.
Signed-off-by: Sivakumar Thulasimani <sivakumar.thulasim...@intel.com>
---
drivers/gpu/drm/i915/intel_dp.c | 14 ++++++++------
1 file changed, 8 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 03523b3..963fdae 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -1224,21 +1224,23 @@ static bool intel_dp_is_hbr2_supported(struct
drm_device *dev)
static int
intel_dp_source_rates(struct drm_device *dev, const int **source_rates)
{
+ int size = 0;
if (IS_BROXTON(dev)) {
*source_rates = bxt_rates;
- return ARRAY_SIZE(bxt_rates);
+ size = ARRAY_SIZE(bxt_rates);
} else if (IS_SKYLAKE(dev)) {
*source_rates = skl_rates;
- return ARRAY_SIZE(skl_rates);
+ size = ARRAY_SIZE(skl_rates);
+ } else {
+ *source_rates = default_rates;
+ size = ARRAY_SIZE(default_rates);
}
- *source_rates = default_rates;
-
/* This depends on the fact that 5.4 is last value in the array */
if (intel_dp_is_hbr2_supported(dev))
- return (DP_LINK_BW_5_4 >> 3) + 1;
+ return size;
else
- return (DP_LINK_BW_2_7 >> 3) + 1;
+ return size - 1;
}
static void
--
1.7.9.5
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