提交 2ecae76a 编写于 作者: V Ville Syrjälä 提交者: Daniel Vetter

drm/i915: Hide the source vs. sink rate handling from intel_dp_compute_config()

intel_dp_compute_config() only really needs to know the rates supported
by both source and sink, so hide the raw source and sink arrays from it.
Signed-off-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: NSonika Jindal <sonika.jindal@intel.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
上级 1db10e28
......@@ -1195,9 +1195,9 @@ intel_dp_set_clock(struct intel_encoder *encoder,
}
}
static int intel_supported_rates(const int *source_rates, int source_len,
const int *sink_rates, int sink_len,
int *supported_rates)
static int intersect_rates(const int *source_rates, int source_len,
const int *sink_rates, int sink_len,
int *supported_rates)
{
int i = 0, j = 0, k = 0;
......@@ -1216,6 +1216,21 @@ static int intel_supported_rates(const int *source_rates, int source_len,
return k;
}
static int intel_supported_rates(struct intel_dp *intel_dp,
int *supported_rates)
{
struct drm_device *dev = intel_dp_to_dev(intel_dp);
const int *source_rates, *sink_rates;
int source_len, sink_len;
sink_len = intel_dp_sink_rates(intel_dp, &sink_rates);
source_len = intel_dp_source_rates(dev, &source_rates);
return intersect_rates(source_rates, source_len,
sink_rates, sink_len,
supported_rates);
}
static int rate_to_index(int find, const int *rates)
{
int i = 0;
......@@ -1246,17 +1261,10 @@ intel_dp_compute_config(struct intel_encoder *encoder,
int max_clock;
int bpp, mode_rate;
int link_avail, link_clock;
const int *sink_rates;
int supported_rates[8] = {0};
const int *source_rates;
int source_len, sink_len, supported_len;
sink_len = intel_dp_sink_rates(intel_dp, &sink_rates);
source_len = intel_dp_source_rates(dev, &source_rates);
int supported_rates[DP_MAX_SUPPORTED_RATES] = {};
int supported_len;
supported_len = intel_supported_rates(source_rates, source_len,
sink_rates, sink_len, supported_rates);
supported_len = intel_supported_rates(intel_dp, supported_rates);
/* No common link rates between source and sink */
WARN_ON(supported_len <= 0);
......@@ -1355,7 +1363,8 @@ intel_dp_compute_config(struct intel_encoder *encoder,
if (INTEL_INFO(dev)->gen >= 9 && intel_dp->supported_rates[0]) {
intel_dp->rate_select =
rate_to_index(supported_rates[clock], sink_rates);
rate_to_index(supported_rates[clock],
intel_dp->supported_rates);
intel_dp->link_bw = 0;
}
......
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