From 12f6a2e21be1ec4ad3dd6e2657b675f0779ee907 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Ville=20Syrj=C3=A4l=C3=A4?= Date: Thu, 12 Mar 2015 17:10:30 +0200 Subject: [PATCH] drm/i915: Don't copy sink rates either MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 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 --- drivers/gpu/drm/i915/intel_dp.c | 24 +++++++++--------------- 1 file changed, 9 insertions(+), 15 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 12dd56b..7569175 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); -- 2.7.4