From patchwork Sun Feb 2 15:49:25 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Gwan-gyeong Mun X-Patchwork-Id: 11361657 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 ED84C924 for ; Sun, 2 Feb 2020 15:49:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CC46520679 for ; Sun, 2 Feb 2020 15:49:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726946AbgBBPtr (ORCPT ); Sun, 2 Feb 2020 10:49:47 -0500 Received: from mga01.intel.com ([192.55.52.88]:25229 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726880AbgBBPtr (ORCPT ); Sun, 2 Feb 2020 10:49:47 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by fmsmga101.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 02 Feb 2020 07:49:47 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,394,1574150400"; d="scan'208";a="430899900" Received: from jghithan-mobl.amr.corp.intel.com (HELO helsinki.ger.corp.intel.com) ([10.251.88.23]) by fmsmga006.fm.intel.com with ESMTP; 02 Feb 2020 07:49:45 -0800 From: Gwan-gyeong Mun To: intel-gfx@lists.freedesktop.org Cc: dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org Subject: [PATCH v2 05/18] drm/i915/dp: Add writing of DP SDPs (Secondary Data Packet) Date: Sun, 2 Feb 2020 17:49:25 +0200 Message-Id: <20200202154938.1129610-6-gwan-gyeong.mun@intel.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200202154938.1129610-1-gwan-gyeong.mun@intel.com> References: <20200202154938.1129610-1-gwan-gyeong.mun@intel.com> MIME-Version: 1.0 Sender: linux-fbdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org It adds routines that write DP VSC SDP and DP HDR Metadata Infoframe SDP. In order to pack DP VSC SDP, it adds intel_dp_vsc_sdp_pack() function. It follows DP 1.4a spec. [Table 2-116: VSC SDP Header Bytes] and [Table 2-117: VSC SDP Payload for DB16 through DB18] In order to pack DP HDR Metadata Infoframe SDP, it adds intel_dp_hdr_metadata_infoframe_sdp_pack() function. And it follows DP 1.4a spec. ([Table 2-125: INFOFRAME SDP v1.2 Header Bytes] and [Table 2-126: INFOFRAME SDP v1.2 Payload Data Bytes - DB0 through DB31]) and CTA-861-G spec. [Table-42 Dynamic Range and Mastering InfoFrame]. A machanism and a naming rule of intel_dp_set_infoframes() function references intel_encoder->set_infoframes() of intel_hdmi.c . VSC SDP is used for PSR and Pixel Encoding and Colorimetry Formats cases. Because PSR routine has its own routine of writing a VSC SDP, when the PSR is enabled, intel_dp_set_infoframes() does not write a VSC SDP. Signed-off-by: Gwan-gyeong Mun --- drivers/gpu/drm/i915/display/intel_dp.c | 190 ++++++++++++++++++++++++ drivers/gpu/drm/i915/display/intel_dp.h | 3 + 2 files changed, 193 insertions(+) diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index e9512711c764..1836b6a3c49c 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -4731,6 +4731,196 @@ intel_dp_needs_vsc_sdp(const struct intel_crtc_state *crtc_state, return false; } +static ssize_t intel_dp_vsc_sdp_pack(const struct intel_dp_vsc_sdp *vsc, + struct dp_sdp *sdp, size_t size) +{ + size_t length = sizeof(struct dp_sdp); + + if (size < length) + return -ENOSPC; + + memset(sdp, 0, size); + + /* + * Prepare VSC Header for SU as per DP 1.4a spec, Table 2-119 + * VSC SDP Header Bytes + */ + sdp->sdp_header.HB0 = 0; /* Secondary-Data Packet ID = 0 */ + sdp->sdp_header.HB1 = vsc->sdp_type; /* Secondary-data Packet Type */ + sdp->sdp_header.HB2 = vsc->revision; /* Revision Number */ + sdp->sdp_header.HB3 = vsc->length; /* Number of Valid Data Bytes */ + + /* VSC SDP Payload for DB16 through DB18 */ + /* Pixel Encoding and Colorimetry Formats */ + sdp->db[16] = (vsc->colorspace & 0xf) << 4; /* DB16[7:4] */ + sdp->db[16] |= vsc->colorimetry & 0xf; /* DB16[3:0] */ + + switch (vsc->bpc) { + case 8: + sdp->db[17] = 0x1; /* DB17[3:0] */ + break; + case 10: + sdp->db[17] = 0x2; + break; + case 12: + sdp->db[17] = 0x3; + break; + case 16: + sdp->db[17] = 0x4; + break; + default: + MISSING_CASE(vsc->bpc); + break; + } + /* Dynamic Range and Component Bit Depth */ + if (vsc->dynamic_range == DP_DYNAMIC_RANGE_CTA) + sdp->db[17] |= 0x80; /* DB17[7] */ + + /* Content Type */ + sdp->db[18] = vsc->content_type & 0x7; + + return length; +} + +static ssize_t +intel_dp_hdr_metadata_infoframe_sdp_pack(const struct hdmi_drm_infoframe *drm_infoframe, + struct dp_sdp *sdp, + size_t size) +{ + size_t length = sizeof(struct dp_sdp); + const int infoframe_size = HDMI_INFOFRAME_HEADER_SIZE + HDMI_DRM_INFOFRAME_SIZE; + unsigned char buf[HDMI_INFOFRAME_HEADER_SIZE + HDMI_DRM_INFOFRAME_SIZE]; + ssize_t len; + + if (size < length) + return -ENOSPC; + + memset(sdp, 0, size); + + len = hdmi_drm_infoframe_pack_only(drm_infoframe, buf, sizeof(buf)); + if (len < 0) { + DRM_DEBUG_KMS("buffer size is smaller than hdr metadata infoframe\n"); + return -ENOSPC; + } + + if (len != infoframe_size) { + DRM_DEBUG_KMS("wrong static hdr metadata size\n"); + return -ENOSPC; + } + + /* + * Set up the infoframe sdp packet for HDR static metadata. + * Prepare VSC Header for SU as per DP 1.4a spec, + * Table 2-100 and Table 2-101 + */ + + /* Secondary-Data Packet ID, 00h for non-Audio INFOFRAME */ + sdp->sdp_header.HB0 = 0; + /* + * Packet Type 80h + Non-audio INFOFRAME Type value + * HDMI_INFOFRAME_TYPE_DRM: 0x87 + * - 80h + Non-audio INFOFRAME Type value + * - InfoFrame Type: 0x07 + * [CTA-861-G Table-42 Dynamic Range and Mastering InfoFrame] + */ + sdp->sdp_header.HB1 = drm_infoframe->type; + /* + * Least Significant Eight Bits of (Data Byte Count – 1) + * infoframe_size - 1 + */ + sdp->sdp_header.HB2 = 0x1D; + /* INFOFRAME SDP Version Number */ + sdp->sdp_header.HB3 = (0x13 << 2); + /* CTA Header Byte 2 (INFOFRAME Version Number) */ + sdp->db[0] = drm_infoframe->version; + /* CTA Header Byte 3 (Length of INFOFRAME): HDMI_DRM_INFOFRAME_SIZE */ + sdp->db[1] = drm_infoframe->length; + /* + * Copy HDMI_DRM_INFOFRAME_SIZE size from a buffer after + */ + BUILD_BUG_ON(sizeof(sdp->db) < HDMI_DRM_INFOFRAME_SIZE + 2); + memcpy(&sdp->db[2], &buf[HDMI_INFOFRAME_HEADER_SIZE], + HDMI_DRM_INFOFRAME_SIZE); + + /* + * Size of DP infoframe sdp packet for HDR static metadata is consist of + * - DP SDP Header(struct dp_sdp_header): 4 bytes + * - Two Data Blocks: 2 bytes + * CTA Header Byte2 (INFOFRAME Version Number) + * CTA Header Byte3 (Length of INFOFRAME) + * - HDMI_DRM_INFOFRAME_SIZE: 26 bytes + * + * Prior to GEN11's GMP register size is identical to DP HDR static metadata + * infoframe size. But GEN11+ has larger than that size, write_infoframe + * will pad rest of the size. + */ + return sizeof(struct dp_sdp_header) + 2 + HDMI_DRM_INFOFRAME_SIZE; +} + +static void intel_write_dp_sdp(struct intel_encoder *encoder, + const struct intel_crtc_state *crtc_state, + unsigned int type) +{ + struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder); + struct dp_sdp sdp = {}; + ssize_t len; + + if ((crtc_state->infoframes.enable & + intel_hdmi_infoframe_enable(type)) == 0) + return; + + switch (type) { + case DP_SDP_VSC: + len = intel_dp_vsc_sdp_pack(&crtc_state->infoframes.vsc, &sdp, + sizeof(sdp)); + break; + case HDMI_PACKET_TYPE_GAMUT_METADATA: + len = intel_dp_hdr_metadata_infoframe_sdp_pack(&crtc_state->infoframes.drm.drm, + &sdp, sizeof(sdp)); + break; + default: + MISSING_CASE(type); + break; + } + + if (WARN_ON(len < 0)) + return; + + intel_dig_port->write_infoframe(encoder, crtc_state, type, &sdp, len); +} + +void intel_dp_set_infoframes(struct intel_encoder *encoder, + bool enable, + const struct intel_crtc_state *crtc_state, + const struct drm_connector_state *conn_state) +{ + struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); + struct intel_dp *intel_dp = enc_to_intel_dp(encoder); + i915_reg_t reg = HSW_TVIDEO_DIP_CTL(crtc_state->cpu_transcoder); + u32 val = I915_READ(reg); + + /* TODO: Add DSC case (DIP_ENABLE_PPS) */ + if (intel_psr_enabled(intel_dp)) + val &= ~VIDEO_DIP_ENABLE_GMP_HSW; + else + val &= ~(VIDEO_DIP_ENABLE_VSC_HSW | VIDEO_DIP_ENABLE_GMP_HSW); + + if (!enable) { + I915_WRITE(reg, val); + POSTING_READ(reg); + return; + } + + I915_WRITE(reg, val); + POSTING_READ(reg); + + /* When PSR is enabled, VSC SDP is handled by PSR routine */ + if (!intel_psr_enabled(intel_dp)) + intel_write_dp_sdp(encoder, crtc_state, DP_SDP_VSC); + + intel_write_dp_sdp(encoder, crtc_state, HDMI_PACKET_TYPE_GAMUT_METADATA); +} + static void intel_dp_setup_vsc_sdp(struct intel_dp *intel_dp, const struct intel_crtc_state *crtc_state, diff --git a/drivers/gpu/drm/i915/display/intel_dp.h b/drivers/gpu/drm/i915/display/intel_dp.h index 3da166054788..0dc09a463ee1 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.h +++ b/drivers/gpu/drm/i915/display/intel_dp.h @@ -116,6 +116,9 @@ void intel_dp_vsc_enable(struct intel_dp *intel_dp, void intel_dp_hdr_metadata_enable(struct intel_dp *intel_dp, const struct intel_crtc_state *crtc_state, const struct drm_connector_state *conn_state); +void intel_dp_set_infoframes(struct intel_encoder *encoder, bool enable, + const struct intel_crtc_state *crtc_state, + const struct drm_connector_state *conn_state); bool intel_digital_port_connected(struct intel_encoder *encoder); static inline unsigned int intel_dp_unused_lane_mask(int lane_count)