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

Sonika Jindal
2015-05-07T08:38:28Z

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.

Reading of rates was added by:
commit fc0f8e25318f ("drm/i915/skl: Read sink supported rates from edp
panel")

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

diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index bacdec5..6bd5afb 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -3906,7 +3906,8 @@ 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;
}
--
1.7.10.4