On 1/17/2014 4:55 AM, Damien Lespiau wrote:
On Thu, Jan 16, 2014 at 08:06:08PM -0700, Todd Previte wrote:
For HSW+ platforms, enable the 5.4Ghz (HBR2) link rate for devices that support it. The
sink device must report that is supports Displayport 1.2 and the HBR2 bit rate in the
DPCD in order to use HBR2.
---
drivers/gpu/drm/i915/intel_dp.c | 21 +++++++++++++++------
1 file changed, 15 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 7df5085..f92d1c0 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -102,7 +102,10 @@ intel_dp_max_link_bw(struct intel_dp *intel_dp)
case DP_LINK_BW_2_7:
break;
case DP_LINK_BW_5_4: /* 1.2 capable displays may advertise higher bw */
- max_link_bw = DP_LINK_BW_2_7;
+ if (intel_dp->dpcd[DP_DPCD_REV] == 0x12)
+ max_link_bw = DP_LINK_BW_5_4;
+ else
+ max_link_bw = DP_LINK_BW_2_7;
break;
I see spaces instead of tabs. You can use the useful checkpatch.pl
script on patches to catch those pesky style issues (from within a linux
tree):
$ ./scripts/checkpatch.pl 0001-drm-i915-Enable-5.4Ghz-HBR2-link-rate-for-Displaypor.patch
[...]
total: 6 errors, 9 warnings, 55 lines checked
Gah. That's what happens when I make changes with different editors.
I'll fix those in the next revision.
-T
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