From patchwork Fri Sep 4 11:53:52 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?VmlsbGUgU3lyasOkbMOk?= X-Patchwork-Id: 11756957 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 0E61192C for ; Fri, 4 Sep 2020 11:54:53 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id E95DE2151B for ; Fri, 4 Sep 2020 11:54:52 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E95DE2151B Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 86CDD6EB6E; Fri, 4 Sep 2020 11:54:51 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mga17.intel.com (mga17.intel.com [192.55.52.151]) by gabe.freedesktop.org (Postfix) with ESMTPS id 231A66EB6E; Fri, 4 Sep 2020 11:54:50 +0000 (UTC) IronPort-SDR: 3vccVTwIYmKE5L/NzQpfXXxx7tw/jHs1Oh9em2OODIP5x8nf/TlpX7ZdxYeOJNnqWeirE5ZLzs tRFezNBXnryw== X-IronPort-AV: E=McAfee;i="6000,8403,9733"; a="137780887" X-IronPort-AV: E=Sophos;i="5.76,389,1592895600"; d="scan'208";a="137780887" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga008.jf.intel.com ([10.7.209.65]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Sep 2020 04:54:49 -0700 IronPort-SDR: tW3/0jpcXZELxQMkClOOcawav8ru3ik1znt25zEoqUWk3L91fzLBl5Zp+HaeS2b+prc9xydHxn SuZa2igIQN0Q== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.76,389,1592895600"; d="scan'208";a="332129650" Received: from stinkbox.fi.intel.com (HELO stinkbox) ([10.237.72.174]) by orsmga008.jf.intel.com with SMTP; 04 Sep 2020 04:54:46 -0700 Received: by stinkbox (sSMTP sendmail emulation); Fri, 04 Sep 2020 14:54:46 +0300 From: Ville Syrjala To: dri-devel@lists.freedesktop.org Subject: [PATCH v2 16/18] drm/i915: DP->HDMI TMDS clock limits vs. deep color Date: Fri, 4 Sep 2020 14:53:52 +0300 Message-Id: <20200904115354.25336-17-ville.syrjala@linux.intel.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200904115354.25336-1-ville.syrjala@linux.intel.com> References: <20200904115354.25336-1-ville.syrjala@linux.intel.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: intel-gfx@lists.freedesktop.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" From: Ville Syrjälä Account for the TMDS clock limits declared by the DFP/DP++ dongle when determining what color depth we're going to use. Signed-off-by: Ville Syrjälä --- drivers/gpu/drm/i915/display/intel_dp.c | 63 ++++++++++++++++++++--- drivers/gpu/drm/i915/display/intel_hdmi.c | 50 ++++++++++-------- drivers/gpu/drm/i915/display/intel_hdmi.h | 2 + 3 files changed, 88 insertions(+), 27 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index 2798621a466a..c7aa66d2eb90 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -1977,18 +1977,69 @@ static bool intel_dp_supports_dsc(struct intel_dp *intel_dp, drm_dp_sink_supports_dsc(intel_dp->dsc_dpcd); } -static int intel_dp_compute_bpp(struct intel_dp *intel_dp, - struct intel_crtc_state *pipe_config) +static bool intel_dp_hdmi_ycbcr420(struct intel_dp *intel_dp, + const struct intel_crtc_state *crtc_state) +{ + return crtc_state->output_format == INTEL_OUTPUT_FORMAT_YCBCR420; +} + +static int intel_dp_hdmi_tmds_clock(struct intel_dp *intel_dp, + const struct intel_crtc_state *crtc_state, int bpc) +{ + int clock = crtc_state->hw.adjusted_mode.crtc_clock * bpc / 8; + + if (intel_dp_hdmi_ycbcr420(intel_dp, crtc_state)) + clock /= 2; + + return clock; +} + +static bool intel_dp_hdmi_tmds_clock_valid(struct intel_dp *intel_dp, + const struct intel_crtc_state *crtc_state, int bpc) +{ + int tmds_clock = intel_dp_hdmi_tmds_clock(intel_dp, crtc_state, bpc); + + if (intel_dp->dfp.min_tmds_clock && + tmds_clock < intel_dp->dfp.min_tmds_clock) + return false; + + if (intel_dp->dfp.max_tmds_clock && + tmds_clock > intel_dp->dfp.max_tmds_clock) + return false; + + return true; +} + +static bool intel_dp_hdmi_deep_color_possible(struct intel_dp *intel_dp, + const struct intel_crtc_state *crtc_state, + int bpc) +{ + bool has_hdmi_sink = intel_dp->has_hdmi_sink; + + return intel_hdmi_deep_color_possible(crtc_state, bpc, has_hdmi_sink) && + intel_dp_hdmi_tmds_clock_valid(intel_dp, crtc_state, bpc); +} + +static int intel_dp_max_bpp(struct intel_dp *intel_dp, + const struct intel_crtc_state *crtc_state) { struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); struct intel_connector *intel_connector = intel_dp->attached_connector; - int bpp; + int bpp, bpc; - bpp = pipe_config->pipe_bpp; + bpc = crtc_state->pipe_bpp / 3; if (intel_dp->dfp.max_bpc) - bpp = min(bpp, 3 * intel_dp->dfp.max_bpc); + bpc = min_t(int, bpc, intel_dp->dfp.max_bpc); + if (intel_dp->dfp.min_tmds_clock) { + for (; bpc >= 10; bpc -= 2) { + if (intel_dp_hdmi_deep_color_possible(intel_dp, crtc_state, bpc)) + break; + } + } + + bpp = bpc * 3; if (intel_dp_is_edp(intel_dp)) { /* Get bpp from vbt only for panels that dont have bpp in edid */ if (intel_connector->base.display_info.bpc == 0 && @@ -2310,7 +2361,7 @@ intel_dp_compute_link_config(struct intel_encoder *encoder, limits.max_lane_count = intel_dp_max_lane_count(intel_dp); limits.min_bpp = intel_dp_min_bpp(pipe_config); - limits.max_bpp = intel_dp_compute_bpp(intel_dp, pipe_config); + limits.max_bpp = intel_dp_max_bpp(intel_dp, pipe_config); if (intel_dp_is_edp(intel_dp)) { /* diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c index 9bf664bfd7de..929ae22b0a49 100644 --- a/drivers/gpu/drm/i915/display/intel_hdmi.c +++ b/drivers/gpu/drm/i915/display/intel_hdmi.c @@ -2277,35 +2277,18 @@ intel_hdmi_mode_valid(struct drm_connector *connector, return intel_mode_valid_max_plane_size(dev_priv, mode); } -static bool hdmi_deep_color_possible(const struct intel_crtc_state *crtc_state, - int bpc) +bool intel_hdmi_deep_color_possible(const struct intel_crtc_state *crtc_state, + int bpc, bool has_hdmi_sink) { - struct drm_i915_private *dev_priv = - to_i915(crtc_state->uapi.crtc->dev); struct drm_atomic_state *state = crtc_state->uapi.state; struct drm_connector_state *connector_state; struct drm_connector *connector; - const struct drm_display_mode *adjusted_mode = - &crtc_state->hw.adjusted_mode; int i; - if (HAS_GMCH(dev_priv)) - return false; - - if (bpc == 10 && INTEL_GEN(dev_priv) < 11) - return false; - if (crtc_state->pipe_bpp < bpc * 3) return false; - if (!crtc_state->has_hdmi_sink) - return false; - - /* - * HDMI deep color affects the clocks, so it's only possible - * when not cloning with other encoder types. - */ - if (crtc_state->output_types != 1 << INTEL_OUTPUT_HDMI) + if (!has_hdmi_sink) return false; for_each_new_connector_in_state(state, connector, connector_state, i) { @@ -2333,6 +2316,30 @@ static bool hdmi_deep_color_possible(const struct intel_crtc_state *crtc_state, } } + return true; +} + +static bool hdmi_deep_color_possible(const struct intel_crtc_state *crtc_state, + int bpc) +{ + struct drm_i915_private *dev_priv = + to_i915(crtc_state->uapi.crtc->dev); + const struct drm_display_mode *adjusted_mode = + &crtc_state->hw.adjusted_mode; + + if (HAS_GMCH(dev_priv)) + return false; + + if (bpc == 10 && INTEL_GEN(dev_priv) < 11) + return false; + + /* + * HDMI deep color affects the clocks, so it's only possible + * when not cloning with other encoder types. + */ + if (crtc_state->output_types != BIT(INTEL_OUTPUT_HDMI)) + return false; + /* Display Wa_1405510057:icl,ehl */ if (crtc_state->output_format == INTEL_OUTPUT_FORMAT_YCBCR420 && bpc == 10 && IS_GEN(dev_priv, 11) && @@ -2340,7 +2347,8 @@ static bool hdmi_deep_color_possible(const struct intel_crtc_state *crtc_state, adjusted_mode->crtc_hblank_start) % 8 == 2) return false; - return true; + return intel_hdmi_deep_color_possible(crtc_state, bpc, + crtc_state->has_hdmi_sink); } static int diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.h b/drivers/gpu/drm/i915/display/intel_hdmi.h index 5b348dcab77a..c382930a992e 100644 --- a/drivers/gpu/drm/i915/display/intel_hdmi.h +++ b/drivers/gpu/drm/i915/display/intel_hdmi.h @@ -48,5 +48,7 @@ void intel_read_infoframe(struct intel_encoder *encoder, union hdmi_infoframe *frame); bool intel_hdmi_limited_color_range(const struct intel_crtc_state *crtc_state, const struct drm_connector_state *conn_state); +bool intel_hdmi_deep_color_possible(const struct intel_crtc_state *crtc_state, + int bpc, bool has_hdmi_sink); #endif /* __INTEL_HDMI_H__ */