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drm/i915: Extract intel_dp_has_dsc()

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Extract a helper to check whether the source+sink combo
supports DSC. That basic check is needed both during mode
validation and compute config. We'll also need to add extra
checks to both places, so having a single place for it is nicer.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240517145356.26103-3-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
This commit is contained in:
Ville Syrjälä 2024-05-17 17:53:51 +03:00
parent 7997a9e4f8
commit 35859d448a
1 changed files with 14 additions and 2 deletions
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16
drivers/gpu/drm/i915/display/intel_dp.c
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@ -1171,6 +1171,19 @@ bool intel_dp_need_joiner(struct intel_dp *intel_dp,
connector->force_bigjoiner_enable;
}
static bool intel_dp_has_dsc(const struct intel_connector *connector)
{
struct drm_i915_private *i915 = to_i915(connector->base.dev);
if (!HAS_DSC(i915))
return false;
if (!drm_dp_sink_supports_dsc(connector->dp.dsc_dpcd))
return false;
return true;
}
static enum drm_mode_status
intel_dp_mode_valid(struct drm_connector *_connector,
struct drm_display_mode *mode)
@ -1225,8 +1238,7 @@ intel_dp_mode_valid(struct drm_connector *_connector,
mode_rate = intel_dp_link_required(target_clock,
intel_dp_mode_min_output_bpp(connector, mode));
if (HAS_DSC(dev_priv) &&
drm_dp_sink_supports_dsc(connector->dp.dsc_dpcd)) {
if (intel_dp_has_dsc(connector)) {
enum intel_output_format sink_format, output_format;
int pipe_bpp;