From patchwork Mon Feb 20 12:23:51 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Nautiyal, Ankit K" X-Patchwork-Id: 13146370 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 88297C64ED8 for ; Mon, 20 Feb 2023 12:26:55 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 9E9BB10E67E; Mon, 20 Feb 2023 12:26:54 +0000 (UTC) Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by gabe.freedesktop.org (Postfix) with ESMTPS id 50DD210E678 for ; Mon, 20 Feb 2023 12:26:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1676896009; x=1708432009; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=tC5anRmFGjbd/waJ3NISjuqyp2NlQr8eDzVfYA/f9d0=; b=lVZSWAycWTruIFpUdquovindXw7TZTn1RfHCmKoOZDx53uHOvXWKHV7H DmRmyIC0KTLJDm81npglTqgi0TvJaGjHII+Q1kWwcmr6kaWKJR/bwDiyp ih0E8TDMqWHsq8UaUNZB6/RMiIMqAbhoN7xJKfbIRHhyIkLB5eP8ahFzg 2GHWgC6xjmN8ORXevoGGw4JjRI7AuirBSyFN+OubdFmRs1oR4/O2MdOCO XnWZ/+2KlH/rz9lOpCGGCY1Rq0lYejTeigpxpskqsIF/pIUXOgGD+35In kO0jGT4WohYT+jsNI5WVSAZrEapN2bjJ/+dlE4AX11r611XJoendOt8Un g==; X-IronPort-AV: E=McAfee;i="6500,9779,10626"; a="397073421" X-IronPort-AV: E=Sophos;i="5.97,312,1669104000"; d="scan'208";a="397073421" Received: from orsmga003.jf.intel.com ([10.7.209.27]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Feb 2023 04:26:49 -0800 X-IronPort-AV: E=McAfee;i="6500,9779,10626"; a="621142085" X-IronPort-AV: E=Sophos;i="5.97,312,1669104000"; d="scan'208";a="621142085" Received: from srr4-3-linux-103-aknautiy.iind.intel.com ([10.223.34.160]) by orsmga003-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Feb 2023 04:26:47 -0800 From: Ankit Nautiyal To: intel-gfx@lists.freedesktop.org Date: Mon, 20 Feb 2023 17:53:51 +0530 Message-Id: <20230220122401.3495507-5-ankit.k.nautiyal@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230220122401.3495507-1-ankit.k.nautiyal@intel.com> References: <20230220122401.3495507-1-ankit.k.nautiyal@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v9 04/14] drm/i915/dp: Replace intel_dp.dfp members with the new crtc_state sink_format X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" The decision to use DFP output format conversion capabilities should be during compute_config phase. This patch uses the members of intel_dp->dfp to only store the format conversion capabilities of the DP device and uses the crtc_state sink_format member, to program the protocol-converter for colorspace/format conversion. v2: Use sink_format to determine the color conversion config for the pcon (Ville). v3: Fix typo: missing 'break' in switch case (lkp kernel test robot). v4: Add helper to check if DP supports YCBCR420. v5: Simplify logic for computing output_format, based on the given sink_format. (Ville). Added scaler constraint for YCbCr420 output. v6: Split the patch for Scaler constraint for Ycbcr420. Signed-off-by: Ankit Nautiyal --- drivers/gpu/drm/i915/display/intel_dp.c | 192 +++++++++++++++++------- 1 file changed, 135 insertions(+), 57 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index f99bf52171fd..9b6d2af2817b 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -804,6 +804,67 @@ u8 intel_dp_dsc_get_slice_count(struct intel_dp *intel_dp, return 0; } +static bool source_can_output(struct intel_dp *intel_dp, + enum intel_output_format format) +{ + struct drm_i915_private *i915 = dp_to_i915(intel_dp); + bool is_branch = drm_dp_is_branch(intel_dp->dpcd); + + if (format == INTEL_OUTPUT_FORMAT_RGB) + return true; + + /* + * No YCbCr output support on gmch platforms. + * Also, ILK doesn't seem capable of DP YCbCr output. + * The displayed image is severly corrupted. SNB+ is fine. + */ + if (HAS_GMCH(i915) || IS_IRONLAKE(i915)) + return false; + + if (format == INTEL_OUTPUT_FORMAT_YCBCR444) + return true; + + /* Platform < Gen 11 cannot output YCbCr420 format */ + if (DISPLAY_VER(i915) < 11) + return false; + + /* If branch device then PCONs should support YCbCr420 Passthrough */ + if (format == INTEL_OUTPUT_FORMAT_YCBCR420) + return !is_branch || intel_dp->dfp.ycbcr420_passthrough; + + return false; +} + +static bool +dfp_can_convert_from_rgb(struct intel_dp *intel_dp, + enum intel_output_format sink_format) +{ + if (!drm_dp_is_branch(intel_dp->dpcd)) + return false; + + if (sink_format == INTEL_OUTPUT_FORMAT_YCBCR444) + return intel_dp->dfp.rgb_to_ycbcr; + + if (sink_format == INTEL_OUTPUT_FORMAT_YCBCR420) + return intel_dp->dfp.rgb_to_ycbcr && + intel_dp->dfp.ycbcr_444_to_420; + + return false; +} + +static bool +dfp_can_convert_from_ycbcr444(struct intel_dp *intel_dp, + enum intel_output_format sink_format) +{ + if (!drm_dp_is_branch(intel_dp->dpcd)) + return false; + + if (sink_format == INTEL_OUTPUT_FORMAT_YCBCR420) + return intel_dp->dfp.ycbcr_444_to_420; + + return false; +} + static bool ycbcr420_scaler_constraints(struct drm_i915_private *i915, const struct drm_display_mode *mode) @@ -835,24 +896,23 @@ intel_dp_output_format(struct intel_connector *connector, struct intel_dp *intel_dp = intel_attached_dp(connector); struct drm_i915_private *i915 = to_i915(connector->base.dev); - if (!connector->base.ycbcr_420_allowed || - sink_format != INTEL_OUTPUT_FORMAT_YCBCR420) - return INTEL_OUTPUT_FORMAT_RGB; + /* + * For YCbCr420 output, scaler is required for downsampling. + * So go for native YCbCr420 only if there are no scaler constraints. + */ + if ((sink_format != INTEL_OUTPUT_FORMAT_YCBCR420 || + !ycbcr420_scaler_constraints(i915, mode)) && + source_can_output(intel_dp, sink_format)) + return sink_format; - if (intel_dp->dfp.rgb_to_ycbcr && - intel_dp->dfp.ycbcr_444_to_420) + if (source_can_output(intel_dp, INTEL_OUTPUT_FORMAT_RGB) && + dfp_can_convert_from_rgb(intel_dp, sink_format)) return INTEL_OUTPUT_FORMAT_RGB; - if (intel_dp->dfp.ycbcr_444_to_420) + if (source_can_output(intel_dp, INTEL_OUTPUT_FORMAT_YCBCR444) && + dfp_can_convert_from_ycbcr444(intel_dp, sink_format)) return INTEL_OUTPUT_FORMAT_YCBCR444; - /* - * For YCbCr420 output, scaler is required for downsampling - * So go for native YCbCr420 only if there are no scaler constraints. - */ - if (!ycbcr420_scaler_constraints(i915, mode)) - return INTEL_OUTPUT_FORMAT_YCBCR420; - return INTEL_OUTPUT_FORMAT_RGB; } @@ -2774,6 +2834,8 @@ void intel_dp_configure_protocol_converter(struct intel_dp *intel_dp, const struct intel_crtc_state *crtc_state) { struct drm_i915_private *i915 = dp_to_i915(intel_dp); + bool ycbcr444_to_420 = false; + bool rgb_to_ycbcr = false; u8 tmp; if (intel_dp->dpcd[DP_DPCD_REV] < 0x13) @@ -2790,8 +2852,35 @@ void intel_dp_configure_protocol_converter(struct intel_dp *intel_dp, drm_dbg_kms(&i915->drm, "Failed to %s protocol converter HDMI mode\n", str_enable_disable(intel_dp->has_hdmi_sink)); - tmp = crtc_state->output_format == INTEL_OUTPUT_FORMAT_YCBCR444 && - intel_dp->dfp.ycbcr_444_to_420 ? DP_CONVERSION_TO_YCBCR420_ENABLE : 0; + if (crtc_state->sink_format == INTEL_OUTPUT_FORMAT_YCBCR420) { + switch (crtc_state->output_format) { + case INTEL_OUTPUT_FORMAT_YCBCR420: + /* + * sink_format is YCbCr420, output_format is also YCbCr420: + * Passthrough. + */ + break; + case INTEL_OUTPUT_FORMAT_YCBCR444: + /* + * sink_format is YCbCr420, output_format is YCbCr444: + * Downsample. + */ + ycbcr444_to_420 = true; + break; + case INTEL_OUTPUT_FORMAT_RGB: + /* + * sink_format is YCbCr420, output_format is RGB: + * Convert to YCbCr444 and Downsample. + */ + rgb_to_ycbcr = true; + ycbcr444_to_420 = true; + break; + default: + break; + } + } + + tmp = ycbcr444_to_420 ? DP_CONVERSION_TO_YCBCR420_ENABLE : 0; if (drm_dp_dpcd_writeb(&intel_dp->aux, DP_PROTOCOL_CONVERTER_CONTROL_1, tmp) != 1) @@ -2799,13 +2888,12 @@ void intel_dp_configure_protocol_converter(struct intel_dp *intel_dp, "Failed to %s protocol converter YCbCr 4:2:0 conversion mode\n", str_enable_disable(intel_dp->dfp.ycbcr_444_to_420)); - tmp = intel_dp->dfp.rgb_to_ycbcr ? - DP_CONVERSION_BT709_RGB_YCBCR_ENABLE : 0; + tmp = rgb_to_ycbcr ? DP_CONVERSION_BT709_RGB_YCBCR_ENABLE : 0; if (drm_dp_pcon_convert_rgb_to_ycbcr(&intel_dp->aux, tmp) < 0) drm_dbg_kms(&i915->drm, - "Failed to %s protocol converter RGB->YCbCr conversion mode\n", - str_enable_disable(tmp)); + "Failed to %s protocol converter RGB->YCbCr conversion mode\n", + str_enable_disable(tmp)); } bool intel_dp_get_colorimetry_status(struct intel_dp *intel_dp) @@ -4595,57 +4683,47 @@ intel_dp_update_dfp(struct intel_dp *intel_dp, intel_dp_get_pcon_dsc_cap(intel_dp); } +static bool +intel_dp_can_ycbcr420(struct intel_dp *intel_dp) +{ + if (source_can_output(intel_dp, INTEL_OUTPUT_FORMAT_YCBCR420)) + return true; + /* + * If source cannot support YCbCr420, and PCON has color conv. support: + * Source sends YCbCr444, PCON converts YCbCr444->420 Or + * Source sends RGB444, PCON converts RGB->YCbCr444 + YCbCr444->YCbCr420) + */ + if (source_can_output(intel_dp, INTEL_OUTPUT_FORMAT_RGB) && + dfp_can_convert_from_rgb(intel_dp, INTEL_OUTPUT_FORMAT_YCBCR420)) + return true; + + if (source_can_output(intel_dp, INTEL_OUTPUT_FORMAT_YCBCR444) && + dfp_can_convert_from_ycbcr444(intel_dp, INTEL_OUTPUT_FORMAT_YCBCR420)) + return INTEL_OUTPUT_FORMAT_YCBCR444; + + return false; +} + static void intel_dp_update_420(struct intel_dp *intel_dp) { struct drm_i915_private *i915 = dp_to_i915(intel_dp); struct intel_connector *connector = intel_dp->attached_connector; - bool is_branch, ycbcr_420_passthrough, ycbcr_444_to_420, rgb_to_ycbcr; - - /* No YCbCr output support on gmch platforms */ - if (HAS_GMCH(i915)) - return; - - /* - * ILK doesn't seem capable of DP YCbCr output. The - * displayed image is severly corrupted. SNB+ is fine. - */ - if (IS_IRONLAKE(i915)) - return; - is_branch = drm_dp_is_branch(intel_dp->dpcd); - ycbcr_420_passthrough = + intel_dp->dfp.ycbcr420_passthrough = drm_dp_downstream_420_passthrough(intel_dp->dpcd, intel_dp->downstream_ports); /* on-board LSPCON always assumed to support 4:4:4->4:2:0 conversion */ - ycbcr_444_to_420 = + intel_dp->dfp.ycbcr_444_to_420 = dp_to_dig_port(intel_dp)->lspcon.active || drm_dp_downstream_444_to_420_conversion(intel_dp->dpcd, intel_dp->downstream_ports); - rgb_to_ycbcr = drm_dp_downstream_rgb_to_ycbcr_conversion(intel_dp->dpcd, - intel_dp->downstream_ports, - DP_DS_HDMI_BT709_RGB_YCBCR_CONV); - - if (DISPLAY_VER(i915) >= 11) { - /* Let PCON convert from RGB->YCbCr if possible */ - if (is_branch && rgb_to_ycbcr && ycbcr_444_to_420) { - intel_dp->dfp.rgb_to_ycbcr = true; - intel_dp->dfp.ycbcr_444_to_420 = true; - connector->base.ycbcr_420_allowed = true; - } else { - /* Prefer 4:2:0 passthrough over 4:4:4->4:2:0 conversion */ - intel_dp->dfp.ycbcr_444_to_420 = - ycbcr_444_to_420 && !ycbcr_420_passthrough; + intel_dp->dfp.rgb_to_ycbcr = + drm_dp_downstream_rgb_to_ycbcr_conversion(intel_dp->dpcd, + intel_dp->downstream_ports, + DP_DS_HDMI_BT709_RGB_YCBCR_CONV); - connector->base.ycbcr_420_allowed = - !is_branch || ycbcr_444_to_420 || ycbcr_420_passthrough; - } - } else { - /* 4:4:4->4:2:0 conversion is the only way */ - intel_dp->dfp.ycbcr_444_to_420 = ycbcr_444_to_420; - - connector->base.ycbcr_420_allowed = ycbcr_444_to_420; - } + connector->base.ycbcr_420_allowed = intel_dp_can_ycbcr420(intel_dp); drm_dbg_kms(&i915->drm, "[CONNECTOR:%d:%s] RGB->YcbCr conversion? %s, YCbCr 4:2:0 allowed? %s, YCbCr 4:4:4->4:2:0 conversion? %s\n",