From patchwork Thu May 7 13:27:05 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gwan-gyeong Mun X-Patchwork-Id: 11533695 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 2189D81 for ; Thu, 7 May 2020 13:27:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 131722075E for ; Thu, 7 May 2020 13:27:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726538AbgEGN11 (ORCPT ); Thu, 7 May 2020 09:27:27 -0400 Received: from mga17.intel.com ([192.55.52.151]:60566 "EHLO mga17.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726235AbgEGN11 (ORCPT ); Thu, 7 May 2020 09:27:27 -0400 IronPort-SDR: rnXX8HlsHeZzT125grbhdnvj41tnsjliOGkdt+MA3w+NyT86teOZI4rvquo0dS6i7aHUYY8GQ0 MW7W/XXCUL7A== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga003.jf.intel.com ([10.7.209.27]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 May 2020 06:27:26 -0700 IronPort-SDR: AMrVNT8lIxDIwf7+5WGWquXmkjjdfnGnjU5rPo1d1fz3NBdRCYnvq+FSfdo7xKlNGN7EUa/c9z 0N7gPsd7YOLQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.73,363,1583222400"; d="scan'208";a="260528040" Received: from plaurent-mobl.ger.corp.intel.com (HELO helsinki.ger.corp.intel.com) ([10.251.84.89]) by orsmga003.jf.intel.com with ESMTP; 07 May 2020 06:27:25 -0700 From: Gwan-gyeong Mun To: intel-gfx@lists.freedesktop.org Cc: dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org Subject: [PATCH v11 13/14] drm/i915/dp: Add compute routine for DP PSR VSC SDP Date: Thu, 7 May 2020 16:27:05 +0300 Message-Id: <20200507132706.2058969-14-gwan-gyeong.mun@intel.com> X-Mailer: git-send-email 2.25.0 In-Reply-To: <20200507132706.2058969-1-gwan-gyeong.mun@intel.com> References: <20200507132706.2058969-1-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 In order to use a common VSC SDP Colorimetry calculating code on PSR, it adds a compute routine for PSR VSC SDP. As PSR routine can not use infoframes.vsc of crtc state, it also adds new writing of DP SDPs (Secondary Data Packet) for PSR. PSR routine has its own scenario and timings of writing a VSC SDP. v3: Replace a structure name to drm_dp_vsc_sdp from intel_dp_vsc_sdp v4: Use struct drm_device logging macros v10: 1) Fix packing of VSC SDP where Pixel Encoding/Colorimetry Format is not supported. 2) Change a checking of PSR state. Signed-off-by: Gwan-gyeong Mun Reviewed-by: Uma Shankar --- drivers/gpu/drm/i915/display/intel_dp.c | 66 ++++++++++++++++++++++++- drivers/gpu/drm/i915/display/intel_dp.h | 8 +++ 2 files changed, 72 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index 3325a60bd297..67edbe06bd6e 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -2487,8 +2487,8 @@ static void intel_dp_compute_vsc_sdp(struct intel_dp *intel_dp, { struct drm_dp_vsc_sdp *vsc = &crtc_state->infoframes.vsc; - /* When PSR is enabled, VSC SDP is handled by PSR routine */ - if (intel_psr_enabled(intel_dp)) + /* When a crtc state has PSR, VSC SDP will be handled by PSR routine */ + if (crtc_state->has_psr) return; if (!intel_dp_needs_vsc_sdp(crtc_state, conn_state)) @@ -2500,6 +2500,42 @@ static void intel_dp_compute_vsc_sdp(struct intel_dp *intel_dp, &crtc_state->infoframes.vsc); } +void intel_dp_compute_psr_vsc_sdp(struct intel_dp *intel_dp, + const struct intel_crtc_state *crtc_state, + const struct drm_connector_state *conn_state, + struct drm_dp_vsc_sdp *vsc) +{ + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); + + vsc->sdp_type = DP_SDP_VSC; + + if (dev_priv->psr.psr2_enabled) { + if (dev_priv->psr.colorimetry_support && + intel_dp_needs_vsc_sdp(crtc_state, conn_state)) { + /* [PSR2, +Colorimetry] */ + intel_dp_compute_vsc_colorimetry(crtc_state, conn_state, + vsc); + } else { + /* + * [PSR2, -Colorimetry] + * Prepare VSC Header for SU as per eDP 1.4 spec, Table 6-11 + * 3D stereo + PSR/PSR2 + Y-coordinate. + */ + vsc->revision = 0x4; + vsc->length = 0xe; + } + } else { + /* + * [PSR1] + * Prepare VSC Header for SU as per DP 1.4 spec, Table 2-118 + * VSC SDP supporting 3D stereo + PSR (applies to eDP v1.3 or + * higher). + */ + vsc->revision = 0x2; + vsc->length = 0x8; + } +} + static void intel_dp_compute_hdr_metadata_infoframe_sdp(struct intel_dp *intel_dp, struct intel_crtc_state *crtc_state, @@ -4791,6 +4827,13 @@ static ssize_t intel_dp_vsc_sdp_pack(const struct drm_dp_vsc_sdp *vsc, sdp->sdp_header.HB2 = vsc->revision; /* Revision Number */ sdp->sdp_header.HB3 = vsc->length; /* Number of Valid Data Bytes */ + /* + * Only revision 0x5 supports Pixel Encoding/Colorimetry Format as + * per DP 1.4a spec. + */ + if (vsc->revision != 0x5) + goto out; + /* VSC SDP Payload for DB16 through DB18 */ /* Pixel Encoding and Colorimetry Formats */ sdp->db[16] = (vsc->pixelformat & 0xf) << 4; /* DB16[7:4] */ @@ -4823,6 +4866,7 @@ static ssize_t intel_dp_vsc_sdp_pack(const struct drm_dp_vsc_sdp *vsc, /* Content Type */ sdp->db[18] = vsc->content_type & 0x7; +out: return length; } @@ -4935,6 +4979,24 @@ static void intel_write_dp_sdp(struct intel_encoder *encoder, intel_dig_port->write_infoframe(encoder, crtc_state, type, &sdp, len); } +void intel_write_dp_vsc_sdp(struct intel_encoder *encoder, + const struct intel_crtc_state *crtc_state, + struct drm_dp_vsc_sdp *vsc) +{ + struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder); + struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); + struct dp_sdp sdp = {}; + ssize_t len; + + len = intel_dp_vsc_sdp_pack(vsc, &sdp, sizeof(sdp)); + + if (drm_WARN_ON(&dev_priv->drm, len < 0)) + return; + + intel_dig_port->write_infoframe(encoder, crtc_state, DP_SDP_VSC, + &sdp, len); +} + void intel_dp_set_infoframes(struct intel_encoder *encoder, bool enable, 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 0d2de15703c3..1702959ca079 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.h +++ b/drivers/gpu/drm/i915/display/intel_dp.h @@ -16,6 +16,7 @@ struct drm_connector_state; struct drm_encoder; struct drm_i915_private; struct drm_modeset_acquire_ctx; +struct drm_dp_vsc_sdp; struct intel_connector; struct intel_crtc_state; struct intel_digital_port; @@ -108,6 +109,13 @@ int intel_dp_link_required(int pixel_clock, int bpp); int intel_dp_max_data_rate(int max_link_clock, int max_lanes); bool intel_dp_needs_vsc_sdp(const struct intel_crtc_state *crtc_state, const struct drm_connector_state *conn_state); +void intel_dp_compute_psr_vsc_sdp(struct intel_dp *intel_dp, + const struct intel_crtc_state *crtc_state, + const struct drm_connector_state *conn_state, + struct drm_dp_vsc_sdp *vsc); +void intel_write_dp_vsc_sdp(struct intel_encoder *encoder, + const struct intel_crtc_state *crtc_state, + struct drm_dp_vsc_sdp *vsc); 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);