From patchwork Mon Jul 10 11:18:38 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Sharma, Shashank" X-Patchwork-Id: 9832739 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 041F160350 for ; Mon, 10 Jul 2017 11:17:14 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id EB486283C4 for ; Mon, 10 Jul 2017 11:17:13 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id DFBF32842E; Mon, 10 Jul 2017 11:17:13 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=unavailable version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 8C8D0283C4 for ; Mon, 10 Jul 2017 11:17:13 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id EB0366E175; Mon, 10 Jul 2017 11:16:10 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by gabe.freedesktop.org (Postfix) with ESMTPS id 116076E170; Mon, 10 Jul 2017 11:16:09 +0000 (UTC) Received: from orsmga004.jf.intel.com ([10.7.209.38]) by orsmga103.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 10 Jul 2017 04:16:08 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.40,339,1496127600"; d="scan'208";a="106590177" Received: from shashanks-linuxbox.iind.intel.com ([10.223.161.29]) by orsmga004.jf.intel.com with ESMTP; 10 Jul 2017 04:16:07 -0700 From: Shashank Sharma To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Date: Mon, 10 Jul 2017 16:48:38 +0530 Message-Id: <1499685528-6926-11-git-send-email-shashank.sharma@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1499685528-6926-1-git-send-email-shashank.sharma@intel.com> References: <1499685528-6926-1-git-send-email-shashank.sharma@intel.com> Subject: [Intel-gfx] [PATCH 10/20] drm/i915: add config function for YCBCR420 outputs X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Virus-Scanned: ClamAV using ClamSMTP This patch checks encoder level support for YCBCR420 outputs. The logic goes as simple as this: If the input mode is YCBCR420-only mode: prepare HDMI for YCBCR420 output, else continue with RGB output mode. It checks if the mode is YCBCR420 and source can support this output then it marks the ycbcr_420 output indicator into crtc state, for further staging in driver. V2: Split the patch into two, kept helper functions in DRM layer. V3: Changed the compute_config function based on new DRM API. V4: Rebase V5: Rebase V6: Check and handle YCBCR420-only modes, discard the property based approach (Ville) Signed-off-by: Shashank Sharma --- drivers/gpu/drm/i915/intel_display.c | 1 + drivers/gpu/drm/i915/intel_drv.h | 3 +++ drivers/gpu/drm/i915/intel_hdmi.c | 42 +++++++++++++++++++++++++++++++++--- 3 files changed, 43 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 4e03ca6..01900e1 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -11930,6 +11930,7 @@ intel_pipe_config_compare(struct drm_i915_private *dev_priv, PIPE_CONF_CHECK_I(hdmi_scrambling); PIPE_CONF_CHECK_I(hdmi_high_tmds_clock_ratio); PIPE_CONF_CHECK_I(has_infoframe); + PIPE_CONF_CHECK_I(ycbcr420); PIPE_CONF_CHECK_I(has_audio); diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index d17a324..592243b 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -780,6 +780,9 @@ struct intel_crtc_state { /* HDMI High TMDS char rate ratio */ bool hdmi_high_tmds_clock_ratio; + + /* HDMI output type */ + bool ycbcr420; }; struct intel_crtc { diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c index cc0d100..276d916 100644 --- a/drivers/gpu/drm/i915/intel_hdmi.c +++ b/drivers/gpu/drm/i915/intel_hdmi.c @@ -1305,7 +1305,8 @@ intel_hdmi_mode_valid(struct drm_connector *connector, return status; } -static bool hdmi_12bpc_possible(struct intel_crtc_state *crtc_state) +static bool hdmi_12bpc_possible(struct intel_crtc_state *crtc_state, + bool output_ycbcr420) { struct drm_i915_private *dev_priv = to_i915(crtc_state->base.crtc->dev); @@ -1330,6 +1331,13 @@ static bool hdmi_12bpc_possible(struct intel_crtc_state *crtc_state) if (connector_state->crtc != crtc_state->base.crtc) continue; + if (output_ycbcr420) { + const struct drm_hdmi_info *hdmi = &info->hdmi; + + if (!(hdmi->y420_dc_modes & DRM_EDID_YCBCR420_DC_36)) + return false; + } + if ((info->edid_hdmi_dc_modes & DRM_EDID_HDMI_DC_36) == 0) return false; } @@ -1342,6 +1350,25 @@ static bool hdmi_12bpc_possible(struct intel_crtc_state *crtc_state) return true; } +static bool +intel_hdmi_ycbcr420_config(struct drm_connector *connector, + struct intel_crtc_state *config, + int *clock_12bpc, int *clock_8bpc) +{ + + if (!connector->ycbcr_420_allowed) { + DRM_ERROR("Platform doesn't support YCBCR420 output\n"); + return false; + } + + /* YCBCR420 TMDS rate requirement is half the pixel clock */ + config->port_clock /= 2; + *clock_12bpc /= 2; + *clock_8bpc /= 2; + config->ycbcr420 = true; + return true; +} + bool intel_hdmi_compute_config(struct intel_encoder *encoder, struct intel_crtc_state *pipe_config, struct drm_connector_state *conn_state) @@ -1349,7 +1376,8 @@ bool intel_hdmi_compute_config(struct intel_encoder *encoder, struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base); struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode; - struct drm_scdc *scdc = &conn_state->connector->display_info.hdmi.scdc; + struct drm_connector *connector = conn_state->connector; + struct drm_scdc *scdc = &connector->display_info.hdmi.scdc; struct intel_digital_connector_state *intel_conn_state = to_intel_digital_connector_state(conn_state); int clock_8bpc = pipe_config->base.adjusted_mode.crtc_clock; @@ -1379,6 +1407,14 @@ bool intel_hdmi_compute_config(struct intel_encoder *encoder, clock_12bpc *= 2; } + if (drm_mode_is_420_only(&connector->display_info, adjusted_mode)) { + if (!intel_hdmi_ycbcr420_config(connector, pipe_config, + &clock_12bpc, &clock_8bpc)) { + DRM_ERROR("Can't support YCBCR420 output\n"); + return false; + } + } + if (HAS_PCH_SPLIT(dev_priv) && !HAS_DDI(dev_priv)) pipe_config->has_pch_encoder = true; @@ -1398,7 +1434,7 @@ bool intel_hdmi_compute_config(struct intel_encoder *encoder, */ if (pipe_config->pipe_bpp > 8*3 && pipe_config->has_hdmi_sink && !force_dvi && hdmi_port_clock_valid(intel_hdmi, clock_12bpc, true, force_dvi) == MODE_OK && - hdmi_12bpc_possible(pipe_config)) { + hdmi_12bpc_possible(pipe_config, pipe_config->ycbcr420)) { DRM_DEBUG_KMS("picking bpc to 12 for HDMI output\n"); desired_bpp = 12*3;