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drm/i915: Store the converted link rates in intel_dp->supported_rates[] 

No point in converting from hardware format every single time, just
store the rates in the final format under intel_dp.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Sonika Jindal <sonika.jindal@intel.com>
Reviewed-by: Todd Previte <tprevite@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Ville Syrjälä 2015-03-12 17:10:28 +02:00 committed by Daniel Vetter
parent f4896f1529
commit ea2d8a427f
2 changed files with 21 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

33
drivers/gpu/drm/i915/intel_dp.c
View File

@ -1144,8 +1144,6 @@ static int
intel_read_sink_rates(struct intel_dp *intel_dp, int *sink_rates)
{
struct drm_device *dev = intel_dp_to_dev(intel_dp);
int i = 0;
uint16_t val;
if (INTEL_INFO(dev)->gen >= 9 && intel_dp->supported_rates[0]) {
/*
@ -1153,18 +1151,12 @@ intel_read_sink_rates(struct intel_dp *intel_dp, int *sink_rates)
* link rate table method, so read link rates from
* supported_link_rates
*/
for (i = 0; i < DP_MAX_SUPPORTED_RATES; ++i) {
val = le16_to_cpu(intel_dp->supported_rates[i]);
if (val == 0)
break;
memcpy(sink_rates, intel_dp->supported_rates,
sizeof(intel_dp->supported_rates));
sink_rates[i] = val * 200;
}
if (i <= 0)
DRM_ERROR("No rates in SUPPORTED_LINK_RATES");
return intel_dp->num_supported_rates;
}
return i;
return 0;
}
static int
@ -3754,10 +3746,23 @@ intel_dp_get_dpcd(struct intel_dp *intel_dp)
(intel_dp->dpcd[DP_EDP_CONFIGURATION_CAP] & DP_DPCD_DISPLAY_CONTROL_CAPABLE) &&
(intel_dp_dpcd_read_wake(&intel_dp->aux, DP_EDP_DPCD_REV, &rev, 1) == 1) &&
(rev >= 0x03)) { /* eDp v1.4 or higher */
__le16 supported_rates[DP_MAX_SUPPORTED_RATES];
int i;
intel_dp_dpcd_read_wake(&intel_dp->aux,
DP_SUPPORTED_LINK_RATES,
intel_dp->supported_rates,
sizeof(intel_dp->supported_rates));
supported_rates,
sizeof(supported_rates));
for (i = 0; i < ARRAY_SIZE(supported_rates); i++) {
int val = le16_to_cpu(supported_rates[i]);
if (val == 0)
break;
intel_dp->supported_rates[i] = val * 200;
}
intel_dp->num_supported_rates = i;
}
if (!(intel_dp->dpcd[DP_DOWNSTREAMPORT_PRESENT] &
DP_DWN_STRM_PORT_PRESENT))

3
drivers/gpu/drm/i915/intel_drv.h
View File

@ -627,7 +627,8 @@ struct intel_dp {
uint8_t dpcd[DP_RECEIVER_CAP_SIZE];
uint8_t psr_dpcd[EDP_PSR_RECEIVER_CAP_SIZE];
uint8_t downstream_ports[DP_MAX_DOWNSTREAM_PORTS];
__le16 supported_rates[DP_MAX_SUPPORTED_RATES];
uint8_t num_supported_rates;
int supported_rates[DP_MAX_SUPPORTED_RATES];
struct drm_dp_aux aux;
uint8_t train_set[4];
int panel_power_up_delay;