We need override certain link rates in favour of the next available higher link rate. The Link rates that need to be overridden are indicated by a mask in VBT. To make sure these modes are skipped we don't add them in them in the sink rates array.
--v2 -Update the link rates after we have a final set of link rates [Ankit] -Break this patch up [Ankit] -Optimize the assingment during loop [Ankit] --v3 -Add protection against broken VBTs [Jani] --v4 -Fix build errors -Create a seprate function to check if edp data override is selected and using the correct vbt --v5 -Use correct number to check the num of edp rates [Ankit] --v6 -No seprate function check if vbt is broken in the reject rate function [Jani] Signed-off-by: Suraj Kandpal <[email protected]> --- drivers/gpu/drm/i915/display/intel_dp.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index 54d88f24b689..12c8f0d80c95 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -4277,6 +4277,23 @@ static void intel_edp_mso_init(struct intel_dp *intel_dp) intel_dp->mso_pixel_overlap = mso ? info->mso_pixel_overlap : 0; } +static void +intel_edp_set_data_override_rates(struct intel_dp *intel_dp) +{ + struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base; + int *sink_rates = intel_dp->sink_rates; + int i, j = 0; + + for (i = 0; i < intel_dp->num_sink_rates; i++) { + if (intel_bios_encoder_reject_edp_rate(encoder->devdata, + intel_dp->sink_rates[i])) + continue; + + sink_rates[j++] = intel_dp->sink_rates[i]; + } + intel_dp->num_sink_rates = j; +} + static void intel_edp_set_sink_rates(struct intel_dp *intel_dp) { @@ -4327,6 +4344,8 @@ intel_edp_set_sink_rates(struct intel_dp *intel_dp) intel_dp->use_rate_select = true; else intel_dp_set_sink_rates(intel_dp); + + intel_edp_set_data_override_rates(intel_dp); } static bool -- 2.34.1
