From patchwork Mon Feb 12 16:43:14 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Golani, Mitulkumar Ajitkumar" X-Patchwork-Id: 13553655 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 10F3EC48297 for ; Mon, 12 Feb 2024 16:50:24 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 96FE310EDDA; Mon, 12 Feb 2024 16:50:23 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="SaWrD4Xy"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.14]) by gabe.freedesktop.org (Postfix) with ESMTPS id 5A63B10EDFE for ; Mon, 12 Feb 2024 16:50:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1707756621; x=1739292621; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=OpMekhTry+I/LmgL788HcjjYphsGMra2O3vIqiQwiCo=; b=SaWrD4XyBkOa0KkKEyiREyBFrO3QMUnhUvVdMvGixBrucC1qDYHAT6vJ IolNz+9iTtuHHvRe8Hb0d3qmC4dd6yev7+EwarfCflM/nxLjhaawY45Dv pYYJE6ZXYvS9stLZTajas3/sUhNwsVA9LYr1vRmVZJA6Hn6H4F0DE4arb 7Sy3ssRCLrwvLigprvlHika8nzwepmFtPBaqJFyccIhu31P/Odzh4gQOU Wxi+ifcKb2l9lJ12Vyeyu3cAlGQxh+dHhJ3kFobe4VDrRvf1pZmgq/x7D 092XCKU6Q0XA/AY1DBBAI27t4KZFMQVDTJjMrrg6dLf3f05yWiddcL9L8 g==; X-IronPort-AV: E=McAfee;i="6600,9927,10982"; a="1886008" X-IronPort-AV: E=Sophos;i="6.06,264,1705392000"; d="scan'208";a="1886008" Received: from orviesa006.jf.intel.com ([10.64.159.146]) by fmvoesa108.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Feb 2024 08:50:21 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.06,264,1705392000"; d="scan'208";a="2980124" Received: from mgolanimitul-x299-ud4-pro.iind.intel.com ([10.190.239.114]) by orviesa006.jf.intel.com with ESMTP; 12 Feb 2024 08:50:20 -0800 From: Mitul Golani To: intel-gfx@lists.freedesktop.org Cc: ankit.k.nautiyal@intel.com, Mitul Golani Subject: [PATCH 3/4] drm/i915/dp: Add Read/Write support for Adaptive Sync SDP Date: Mon, 12 Feb 2024 22:13:14 +0530 Message-Id: <20240212164316.1411230-4-mitulkumar.ajitkumar.golani@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240212164316.1411230-1-mitulkumar.ajitkumar.golani@intel.com> References: <20240212164316.1411230-1-mitulkumar.ajitkumar.golani@intel.com> MIME-Version: 1.0 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" Add the necessary structures and functions to handle reading and unpacking Adaptive Sync Secondary Data Packets. Also add support to write and pack AS SDP. --v2: - Correct use of REG_BIT and REG_GENMASK. [Jani] - Use as_sdp instead of async. [Jani] - Remove unrelated comments and changes. [Jani] - Correct code indent. [Jani] Signed-off-by: Mitul Golani --- drivers/gpu/drm/i915/display/intel_dp.c | 95 ++++++++++++++++++++++- drivers/gpu/drm/i915/display/intel_hdmi.c | 12 ++- drivers/gpu/drm/i915/i915_reg.h | 6 ++ include/drm/display/drm_dp_helper.h | 3 + 4 files changed, 112 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index 5045c34a16be..6e9180ce069a 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -95,7 +95,6 @@ #define INTEL_DP_RESOLUTION_STANDARD (2 << INTEL_DP_RESOLUTION_SHIFT_MASK) #define INTEL_DP_RESOLUTION_FAILSAFE (3 << INTEL_DP_RESOLUTION_SHIFT_MASK) - /* Constants for DP DSC configurations */ static const u8 valid_dsc_bpp[] = {6, 8, 10, 12, 15}; @@ -4087,6 +4086,34 @@ intel_dp_needs_vsc_sdp(const struct intel_crtc_state *crtc_state, return false; } +static ssize_t intel_dp_as_sdp_pack(const struct drm_dp_as_sdp *as_sdp, + struct dp_sdp *sdp, size_t size) +{ + size_t length = sizeof(struct dp_sdp); + + if (size < length) + return -ENOSPC; + + memset(sdp, 0, size); + + /* Prepare AS (Adaptive Sync) SDP Header */ + sdp->sdp_header.HB0 = 0; + sdp->sdp_header.HB1 = as_sdp->sdp_type; + sdp->sdp_header.HB2 = 0x02; + sdp->sdp_header.HB3 = as_sdp->length; + + /* Fill AS (Adaptive Sync) SDP Payload */ + sdp->db[1] = 0x0; + sdp->db[1] = as_sdp->vtotal & 0xFF; + sdp->db[2] = (as_sdp->vtotal >> 8) & 0xF; + sdp->db[3] = 0x0; + sdp->db[4] = 0x0; + sdp->db[7] = 0x0; + sdp->db[8] = 0x0; + + return length; +} + static ssize_t intel_dp_vsc_sdp_pack(const struct drm_dp_vsc_sdp *vsc, struct dp_sdp *sdp, size_t size) { @@ -4254,6 +4281,10 @@ static void intel_write_dp_sdp(struct intel_encoder *encoder, &crtc_state->infoframes.drm.drm, &sdp, sizeof(sdp)); break; + case DP_SDP_ADAPTIVE_SYNC: + len = intel_dp_as_sdp_pack(&crtc_state->infoframes.as_sdp, &sdp, + sizeof(sdp)); + break; default: MISSING_CASE(type); return; @@ -4274,7 +4305,8 @@ void intel_dp_set_infoframes(struct intel_encoder *encoder, i915_reg_t reg = HSW_TVIDEO_DIP_CTL(crtc_state->cpu_transcoder); u32 dip_enable = VIDEO_DIP_ENABLE_AVI_HSW | VIDEO_DIP_ENABLE_GCP_HSW | VIDEO_DIP_ENABLE_VS_HSW | VIDEO_DIP_ENABLE_GMP_HSW | - VIDEO_DIP_ENABLE_SPD_HSW | VIDEO_DIP_ENABLE_DRM_GLK; + VIDEO_DIP_ENABLE_SPD_HSW | VIDEO_DIP_ENABLE_DRM_GLK | + VIDEO_DIP_ENABLE_AS_HSW; u32 val = intel_de_read(dev_priv, reg) & ~dip_enable; /* TODO: Sanitize DSC enabling wrt. intel_dsc_dp_pps_write(). */ @@ -4296,6 +4328,40 @@ void intel_dp_set_infoframes(struct intel_encoder *encoder, intel_write_dp_sdp(encoder, crtc_state, HDMI_PACKET_TYPE_GAMUT_METADATA); } +static +int intel_dp_as_sdp_unpack(struct drm_dp_as_sdp *as_sdp, + const void *buffer, size_t size) +{ + const struct dp_sdp *sdp = buffer; + + if (size < sizeof(struct dp_sdp)) + return -EINVAL; + + memset(as_sdp, 0, sizeof(*as_sdp)); + + if (sdp->sdp_header.HB0 != 0) + return -EINVAL; + + if (sdp->sdp_header.HB1 != DP_SDP_ADAPTIVE_SYNC) + return -EINVAL; + + if (sdp->sdp_header.HB2 != 0x02) + return -EINVAL; + + if ((sdp->sdp_header.HB3 & 0x3F) != 9) + return -EINVAL; + + if ((sdp->db[0] & AS_SDP_OP_MODE) != 0x0) + return -EINVAL; + + as_sdp->vtotal = ((u64)sdp->db[2] << 32) | (u64)sdp->db[1]; + as_sdp->target_rr = 0; + as_sdp->duration_incr_ms = 0; + as_sdp->duration_decr_ms = 0; + + return 0; +} + static int intel_dp_vsc_sdp_unpack(struct drm_dp_vsc_sdp *vsc, const void *buffer, size_t size) { @@ -4366,6 +4432,27 @@ static int intel_dp_vsc_sdp_unpack(struct drm_dp_vsc_sdp *vsc, return 0; } +static int +intel_read_dp_metadata_infoframe_as_sdp(struct intel_encoder *encoder, + struct intel_crtc_state *crtc_state, + struct drm_dp_as_sdp *as_sdp) +{ + struct intel_digital_port *dig_port = enc_to_dig_port(encoder); + struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); + unsigned int type = DP_SDP_ADAPTIVE_SYNC; + struct dp_sdp sdp = {}; + int ret; + + dig_port->read_infoframe(encoder, crtc_state, type, &sdp, + sizeof(sdp)); + + ret = intel_dp_as_sdp_unpack(as_sdp, &sdp, sizeof(sdp)); + if (ret) + drm_dbg_kms(&dev_priv->drm, "Failed to unpack DP AS SDP\n"); + + return ret; +} + static int intel_dp_hdr_metadata_infoframe_sdp_unpack(struct hdmi_drm_infoframe *drm_infoframe, const void *buffer, size_t size) @@ -4472,6 +4559,10 @@ void intel_read_dp_sdp(struct intel_encoder *encoder, intel_read_dp_hdr_metadata_infoframe_sdp(encoder, crtc_state, &crtc_state->infoframes.drm.drm); break; + case DP_SDP_ADAPTIVE_SYNC: + intel_read_dp_metadata_infoframe_as_sdp(encoder, crtc_state, + &crtc_state->infoframes.as_sdp); + break; default: MISSING_CASE(type); break; diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c index 7020e5806109..04c975d18e94 100644 --- a/drivers/gpu/drm/i915/display/intel_hdmi.c +++ b/drivers/gpu/drm/i915/display/intel_hdmi.c @@ -137,6 +137,8 @@ static u32 hsw_infoframe_enable(unsigned int type) return VIDEO_DIP_ENABLE_GMP_HSW; case DP_SDP_VSC: return VIDEO_DIP_ENABLE_VSC_HSW; + case DP_SDP_ADAPTIVE_SYNC: + return VIDEO_DIP_ENABLE_AS_HSW; case DP_SDP_PPS: return VDIP_ENABLE_PPS; case HDMI_INFOFRAME_TYPE_AVI: @@ -164,6 +166,8 @@ hsw_dip_data_reg(struct drm_i915_private *dev_priv, return HSW_TVIDEO_DIP_GMP_DATA(cpu_transcoder, i); case DP_SDP_VSC: return HSW_TVIDEO_DIP_VSC_DATA(cpu_transcoder, i); + case DP_SDP_ADAPTIVE_SYNC: + return HSW_TVIDEO_DIP_AS_SDP_DATA(cpu_transcoder, i); case DP_SDP_PPS: return ICL_VIDEO_DIP_PPS_DATA(cpu_transcoder, i); case HDMI_INFOFRAME_TYPE_AVI: @@ -186,6 +190,8 @@ static int hsw_dip_data_size(struct drm_i915_private *dev_priv, switch (type) { case DP_SDP_VSC: return VIDEO_DIP_VSC_DATA_SIZE; + case DP_SDP_ADAPTIVE_SYNC: + return VIDEO_DIP_ASYNC_DATA_SIZE; case DP_SDP_PPS: return VIDEO_DIP_PPS_DATA_SIZE; case HDMI_PACKET_TYPE_GAMUT_METADATA: @@ -558,7 +564,8 @@ static u32 hsw_infoframes_enabled(struct intel_encoder *encoder, mask = (VIDEO_DIP_ENABLE_VSC_HSW | VIDEO_DIP_ENABLE_AVI_HSW | VIDEO_DIP_ENABLE_GCP_HSW | VIDEO_DIP_ENABLE_VS_HSW | - VIDEO_DIP_ENABLE_GMP_HSW | VIDEO_DIP_ENABLE_SPD_HSW); + VIDEO_DIP_ENABLE_GMP_HSW | VIDEO_DIP_ENABLE_SPD_HSW | + VIDEO_DIP_ENABLE_AS_HSW); if (DISPLAY_VER(dev_priv) >= 10) mask |= VIDEO_DIP_ENABLE_DRM_GLK; @@ -570,6 +577,7 @@ static const u8 infoframe_type_to_idx[] = { HDMI_PACKET_TYPE_GENERAL_CONTROL, HDMI_PACKET_TYPE_GAMUT_METADATA, DP_SDP_VSC, + DP_SDP_ADAPTIVE_SYNC, HDMI_INFOFRAME_TYPE_AVI, HDMI_INFOFRAME_TYPE_SPD, HDMI_INFOFRAME_TYPE_VENDOR, @@ -1212,7 +1220,7 @@ static void hsw_set_infoframes(struct intel_encoder *encoder, val &= ~(VIDEO_DIP_ENABLE_VSC_HSW | VIDEO_DIP_ENABLE_AVI_HSW | VIDEO_DIP_ENABLE_GCP_HSW | VIDEO_DIP_ENABLE_VS_HSW | VIDEO_DIP_ENABLE_GMP_HSW | VIDEO_DIP_ENABLE_SPD_HSW | - VIDEO_DIP_ENABLE_DRM_GLK); + VIDEO_DIP_ENABLE_DRM_GLK | VIDEO_DIP_ENABLE_AS_HSW); if (!enable) { intel_de_write(dev_priv, reg, val); diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 3449e65fdf1b..3bcbddd676b9 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -2314,6 +2314,7 @@ * (Haswell and newer) to see which VIDEO_DIP_DATA byte corresponds to each byte * of the infoframe structure specified by CEA-861. */ #define VIDEO_DIP_DATA_SIZE 32 +#define VIDEO_DIP_ASYNC_DATA_SIZE 36 #define VIDEO_DIP_GMP_DATA_SIZE 36 #define VIDEO_DIP_VSC_DATA_SIZE 36 #define VIDEO_DIP_PPS_DATA_SIZE 132 @@ -2346,6 +2347,7 @@ #define VSC_DIP_HW_DATA_SW_HEA (2 << 25) #define VSC_DIP_SW_HEA_DATA (3 << 25) #define VDIP_ENABLE_PPS (1 << 24) +#define VIDEO_DIP_ENABLE_AS_HSW REG_BIT(23) #define VIDEO_DIP_ENABLE_VSC_HSW (1 << 20) #define VIDEO_DIP_ENABLE_GCP_HSW (1 << 16) #define VIDEO_DIP_ENABLE_AVI_HSW (1 << 12) @@ -5042,6 +5044,7 @@ #define _HSW_VIDEO_DIP_SPD_DATA_A 0x602A0 #define _HSW_VIDEO_DIP_GMP_DATA_A 0x602E0 #define _HSW_VIDEO_DIP_VSC_DATA_A 0x60320 +#define _HSW_VIDEO_DIP_ASYNC_DATA_A 0x60484 #define _GLK_VIDEO_DIP_DRM_DATA_A 0x60440 #define _HSW_VIDEO_DIP_AVI_ECC_A 0x60240 #define _HSW_VIDEO_DIP_VS_ECC_A 0x60280 @@ -5056,6 +5059,7 @@ #define _HSW_VIDEO_DIP_SPD_DATA_B 0x612A0 #define _HSW_VIDEO_DIP_GMP_DATA_B 0x612E0 #define _HSW_VIDEO_DIP_VSC_DATA_B 0x61320 +#define _HSW_VIDEO_DIP_ASYNC_DATA_B 0x61484 #define _GLK_VIDEO_DIP_DRM_DATA_B 0x61440 #define _HSW_VIDEO_DIP_BVI_ECC_B 0x61240 #define _HSW_VIDEO_DIP_VS_ECC_B 0x61280 @@ -5082,6 +5086,8 @@ #define HSW_TVIDEO_DIP_SPD_DATA(trans, i) _MMIO_TRANS2(trans, _HSW_VIDEO_DIP_SPD_DATA_A + (i) * 4) #define HSW_TVIDEO_DIP_GMP_DATA(trans, i) _MMIO_TRANS2(trans, _HSW_VIDEO_DIP_GMP_DATA_A + (i) * 4) #define HSW_TVIDEO_DIP_VSC_DATA(trans, i) _MMIO_TRANS2(trans, _HSW_VIDEO_DIP_VSC_DATA_A + (i) * 4) +#define HSW_TVIDEO_DIP_AS_SDP_DATA(trans, i) _MMIO_TRANS2(trans,\ + _HSW_VIDEO_DIP_ASYNC_DATA_A + (i) * 4) #define GLK_TVIDEO_DIP_DRM_DATA(trans, i) _MMIO_TRANS2(trans, _GLK_VIDEO_DIP_DRM_DATA_A + (i) * 4) #define ICL_VIDEO_DIP_PPS_DATA(trans, i) _MMIO_TRANS2(trans, _ICL_VIDEO_DIP_PPS_DATA_A + (i) * 4) #define ICL_VIDEO_DIP_PPS_ECC(trans, i) _MMIO_TRANS2(trans, _ICL_VIDEO_DIP_PPS_ECC_A + (i) * 4) diff --git a/include/drm/display/drm_dp_helper.h b/include/drm/display/drm_dp_helper.h index 37045a903d89..67feb626405b 100644 --- a/include/drm/display/drm_dp_helper.h +++ b/include/drm/display/drm_dp_helper.h @@ -837,6 +837,9 @@ int drm_dp_pcon_convert_rgb_to_ycbcr(struct drm_dp_aux *aux, u8 color_spc); #define DRM_DP_BW_OVERHEAD_FEC BIT(3) #define DRM_DP_BW_OVERHEAD_DSC BIT(4) +#define AS_SDP_ENABLE BIT(2) +#define AS_SDP_OP_MODE GENMASK(1, 0) + int drm_dp_bw_overhead(int lane_count, int hactive, int dsc_slice_count, int bpp_x16, unsigned long flags);