diff mbox

drm/i915: Sink rate read should be saved in deca-kHz

Message ID 1429594405-18443-1-git-send-email-sonika.jindal@intel.com (mailing list archive)
State New, archived
Headers show

Commit Message

sonika.jindal@intel.com April 21, 2015, 5:33 a.m. UTC
The sink rate read from supported link rate table is in KHz as per spec
while in drm, the saved clock is in deca-KHz. So divide the link rate by
10 before storing.

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Sonika Jindal <sonika.jindal@intel.com>
---
 drivers/gpu/drm/i915/intel_dp.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

Comments

Shuang He April 21, 2015, 10:31 a.m. UTC | #1
Tested-By: Intel Graphics QA PRTS (Patch Regression Test System Contact: shuang.he@intel.com)
Task id: 6242
-------------------------------------Summary-------------------------------------
Platform          Delta          drm-intel-nightly          Series Applied
PNV                                  276/276              276/276
ILK                                  302/302              302/302
SNB                                  318/318              318/318
IVB                                  341/341              341/341
BYT                                  287/287              287/287
BDW                                  318/318              318/318
-------------------------------------Detailed-------------------------------------
Platform  Test                                drm-intel-nightly          Series Applied
Note: You need to pay more attention to line start with '*'
diff mbox

Patch

diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 14cdd00..ae2cfc3 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -3833,7 +3833,8 @@  intel_dp_get_dpcd(struct intel_dp *intel_dp)
 			if (val == 0)
 				break;
 
-			intel_dp->sink_rates[i] = val * 200;
+			/* Value read is in kHz while drm clock is saved in deca-kHz */
+			intel_dp->sink_rates[i] = (val * 200) / 10;
 		}
 		intel_dp->num_sink_rates = i;
 	}