From: Ville Syrjälä Date: Thu, 12 Mar 2015 15:10:30 +0000 (+0200) Subject: drm/i915: Don't copy sink rates either X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=12f6a2e21be1ec4ad3dd6e2657b675f0779ee907;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git drm/i915: Don't copy sink rates either Once we've read the rates from the sink we don't have to mess with them, so the caller can just look at the stored rates without doing extra copies. If the sink doesn't support the new link rate stuff, we just point the caller at the default_rates[] array. Signed-off-by: Ville Syrjälä Reviewed-by: Sonika Jindal Signed-off-by: Daniel Vetter --- diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 12dd56b99b4d..756917512cb9 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -1141,22 +1141,16 @@ hsw_dp_set_ddi_pll_sel(struct intel_crtc_state *pipe_config, int link_bw) } static int -intel_read_sink_rates(struct intel_dp *intel_dp, int *sink_rates) +intel_dp_sink_rates(struct intel_dp *intel_dp, const int **sink_rates) { - struct drm_device *dev = intel_dp_to_dev(intel_dp); - - if (INTEL_INFO(dev)->gen >= 9 && intel_dp->supported_rates[0]) { - /* - * Receiver supports only main-link rate selection by - * link rate table method, so read link rates from - * supported_link_rates - */ - memcpy(sink_rates, intel_dp->supported_rates, - sizeof(intel_dp->supported_rates)); - + if (intel_dp->num_supported_rates) { + *sink_rates = intel_dp->supported_rates; return intel_dp->num_supported_rates; } - return 0; + + *sink_rates = default_rates; + + return (intel_dp_max_link_bw(intel_dp) >> 3) + 1; } static int @@ -1266,12 +1260,12 @@ intel_dp_compute_config(struct intel_encoder *encoder, int max_clock; int bpp, mode_rate; int link_avail, link_clock; - int sink_rates[8]; + const int *sink_rates; int supported_rates[8] = {0}; const int *source_rates; int source_len, sink_len, supported_len; - sink_len = intel_read_sink_rates(intel_dp, sink_rates); + sink_len = intel_dp_sink_rates(intel_dp, &sink_rates); source_len = intel_dp_source_rates(intel_dp, &source_rates);