From patchwork Tue Feb 6 10:47:56 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Murthy, Arun R" X-Patchwork-Id: 13547018 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 A4F67C48297 for ; Tue, 6 Feb 2024 10:58:21 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id D0F1D10EB4A; Tue, 6 Feb 2024 10:58:20 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="Advk7DXQ"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.7]) by gabe.freedesktop.org (Postfix) with ESMTPS id 77C6E10EB82 for ; Tue, 6 Feb 2024 10:58:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1707217099; x=1738753099; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=GHwUiREu8QnT4iF10j3UtcfgSKBeYL36SxBJWMDnt+w=; b=Advk7DXQ/45LfuNakZ8Irwt77ZT5QYVQj2z8FawR7uLGqH5Wb8Vc3u2z x/gFEZueCj4giEZtaWqoHynKnoGfZXocCrQv1EHuJXpbsjflk9dMYruNN UelocU9E0gUu9WiJFghNvMNZAbhlrmd2xSNHiue428kD3lnIOAE5m1XMO 73LXymjc/SrFKp79gOJYUDqyTHQmtnVuk0seD1NOPvVzKY6ZcG1DF675I W66olNW87uJW9mQQ/yveCFIDfEzyfMrn1rXr8lBLHB3dU7DLVGbZWTi2z tDdUx/oLl1+RRjh2ut7/ysFR8J5PGHcO/QzzCiKHIGS7NKFoZ9DjoTsD6 g==; X-IronPort-AV: E=McAfee;i="6600,9927,10975"; a="26164521" X-IronPort-AV: E=Sophos;i="6.05,247,1701158400"; d="scan'208";a="26164521" Received: from orviesa010.jf.intel.com ([10.64.159.150]) by fmvoesa101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Feb 2024 02:58:19 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.05,247,1701158400"; d="scan'208";a="1019172" Received: from srr4-3-linux-106-armuthy.iind.intel.com ([10.190.238.56]) by orviesa010.jf.intel.com with ESMTP; 06 Feb 2024 02:58:17 -0800 From: Arun R Murthy To: intel-gfx@lists.freedesktop.org Cc: jani.nikula@intel.com, imre.deak@intel.com, ville.syrjala@intel.com, uma.shankar@intel.com, Arun R Murthy Subject: [RFC 1/4] drm/i915/display/dp: Add DP fallback on LT Date: Tue, 6 Feb 2024 16:17:56 +0530 Message-Id: <20240206104759.2079133-2-arun.r.murthy@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240206104759.2079133-1-arun.r.murthy@intel.com> References: <20240206104759.2079133-1-arun.r.murthy@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" Fallback mandates on DP link training failure. This patch just covers the DP2.0 fallback sequence. TODO: Need to implement the DP1.4 fallback. Signed-off-by: Arun R Murthy --- drivers/gpu/drm/i915/display/intel_dp.c | 92 ++++++++++++++++++++++--- 1 file changed, 82 insertions(+), 10 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index 10ec231acd98..82d354a6b0cd 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -104,6 +104,50 @@ static const u8 valid_dsc_bpp[] = {6, 8, 10, 12, 15}; */ static const u8 valid_dsc_slicecount[] = {1, 2, 4}; +/* DL Link Rates */ +#define UHBR20 2000000 +#define UHBR13P5 1350000 +#define UHBR10 1000000 +#define HBR3 810000 +#define HBR2 540000 +#define HBR 270000 +#define RBR 162000 + +/* DP Lane Count */ +#define LANE_COUNT_4 4 +#define LANE_COUNT_2 2 +#define LANE_COUNT_1 1 + +/* DP2.0 fallback values */ +struct dp_fallback { + u32 link_rate; + u8 lane_count; +}; + +struct dp_fallback dp2dot0_fallback[] = { + {UHBR20, LANE_COUNT_4}, + {UHBR13P5, LANE_COUNT_4}, + {UHBR20, LANE_COUNT_2}, + {UHBR10, LANE_COUNT_4}, + {UHBR13P5, LANE_COUNT_2}, + {HBR3, LANE_COUNT_4}, + {UHBR20, LANE_COUNT_1}, + {UHBR10, LANE_COUNT_2}, + {HBR2, LANE_COUNT_4}, + {UHBR13P5, LANE_COUNT_1}, + {HBR3, LANE_COUNT_2}, + {UHBR10, LANE_COUNT_1}, + {HBR2, LANE_COUNT_2}, + {HBR, LANE_COUNT_4}, + {HBR3, LANE_COUNT_1}, + {RBR, LANE_COUNT_4}, + {HBR2, LANE_COUNT_1}, + {HBR, LANE_COUNT_2}, + {RBR, LANE_COUNT_2}, + {HBR, LANE_COUNT_1}, + {RBR, LANE_COUNT_1}, +}; + /** * intel_dp_is_edp - is the given port attached to an eDP panel (either CPU or PCH) * @intel_dp: DP struct @@ -299,6 +343,19 @@ static int intel_dp_common_len_rate_limit(const struct intel_dp *intel_dp, intel_dp->num_common_rates, max_rate); } +static bool intel_dp_link_rate_supported(struct intel_dp *intel_dp, u32 link_rate) +{ + u8 i; + + for (i = 0; i < ARRAY_SIZE(intel_dp->common_rates); i++) { + if (intel_dp->common_rates[i] == link_rate) + return true; + else + continue; + } + return false; +} + static int intel_dp_common_rate(struct intel_dp *intel_dp, int index) { if (drm_WARN_ON(&dp_to_i915(intel_dp)->drm, @@ -671,15 +728,6 @@ int intel_dp_get_link_train_fallback_values(struct intel_dp *intel_dp, struct drm_i915_private *i915 = dp_to_i915(intel_dp); int index; - /* - * TODO: Enable fallback on MST links once MST link compute can handle - * the fallback params. - */ - if (intel_dp->is_mst) { - drm_err(&i915->drm, "Link Training Unsuccessful\n"); - return -1; - } - if (intel_dp_is_edp(intel_dp) && !intel_dp->use_max_params) { drm_dbg_kms(&i915->drm, "Retrying Link training for eDP with max parameters\n"); @@ -687,6 +735,31 @@ int intel_dp_get_link_train_fallback_values(struct intel_dp *intel_dp, return 0; } + /* DP fallback values */ + if (intel_dp->dpcd[DP_MAIN_LINK_CHANNEL_CODING] & DP_CAP_ANSI_128B132B) { + for(index = 0; index < ARRAY_SIZE(dp2dot0_fallback); index++) { + if (link_rate == dp2dot0_fallback[index].link_rate && + lane_count == dp2dot0_fallback[index].lane_count) { + for(index += 1; index < ARRAY_SIZE(dp2dot0_fallback); index++) { + if (intel_dp_link_rate_supported(intel_dp, + dp2dot0_fallback[index].link_rate)) { + intel_dp_set_link_params(intel_dp, + dp2dot0_fallback[index].link_rate, + dp2dot0_fallback[index].lane_count); + drm_dbg_kms(&i915->drm, + "Retrying Link training with link rate %d and lane count %d\n", + dp2dot0_fallback[index].link_rate, + dp2dot0_fallback[index].lane_count); + return 0; + } + } + } + } + /* Report failure and fail link training */ + drm_err(&i915->drm, "Link Training Unsuccessful\n"); + return -1; + } + index = intel_dp_rate_index(intel_dp->common_rates, intel_dp->num_common_rates, link_rate); @@ -716,7 +789,6 @@ int intel_dp_get_link_train_fallback_values(struct intel_dp *intel_dp, drm_err(&i915->drm, "Link Training Unsuccessful\n"); return -1; } - return 0; } From patchwork Tue Feb 6 10:47:57 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Murthy, Arun R" X-Patchwork-Id: 13547019 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 ABDA9C4829A for ; Tue, 6 Feb 2024 10:58:23 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id EE1DB10EB7B; Tue, 6 Feb 2024 10:58:22 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="Rgit2D0P"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.7]) by gabe.freedesktop.org (Postfix) with ESMTPS id 9000E10EB7B for ; Tue, 6 Feb 2024 10:58:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1707217101; x=1738753101; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=164wl8nwNwQbrZvws7AMuX730t9qKE7wCiTH0sU8FY0=; b=Rgit2D0Py25Mn0cuQDfgFWMJnIC82fF5VZv+co05hwR3AriXSm3X+ix/ ddJ1ZD0c/fGXwwhPCjM5XHN1VRjAZBay5+h2TUATbSatk+j4fucZN3F8N 3BRrlxA9PiedunnY9t9FJJbi9eey4orjafb6QW62H4+acYXtAHw4iGdp5 CHy/I+daEU9MoeClB8AgQ6WnFy8ySQly5Z+qCq3eU9aaP7pYSxNub0wHJ s8Na74bK9XqpjDHSuCr3fky3FpgGl3/Im2V9oV65sVjWYVe2xfy5bVAro StICbVWpaUe3RyHF0wR47BoTgoneoeo5OtEljh3Vq8hqOtuvEV1x/bxl+ g==; X-IronPort-AV: E=McAfee;i="6600,9927,10975"; a="26164531" X-IronPort-AV: E=Sophos;i="6.05,247,1701158400"; d="scan'208";a="26164531" Received: from orviesa010.jf.intel.com ([10.64.159.150]) by fmvoesa101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Feb 2024 02:58:21 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.05,247,1701158400"; d="scan'208";a="1019177" Received: from srr4-3-linux-106-armuthy.iind.intel.com ([10.190.238.56]) by orviesa010.jf.intel.com with ESMTP; 06 Feb 2024 02:58:20 -0800 From: Arun R Murthy To: intel-gfx@lists.freedesktop.org Cc: jani.nikula@intel.com, imre.deak@intel.com, ville.syrjala@intel.com, uma.shankar@intel.com, Arun R Murthy Subject: [RFC 2/4] drm/i915/display/dp: Dont send hotplug event on LT failure Date: Tue, 6 Feb 2024 16:17:57 +0530 Message-Id: <20240206104759.2079133-3-arun.r.murthy@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240206104759.2079133-1-arun.r.murthy@intel.com> References: <20240206104759.2079133-1-arun.r.murthy@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" On link training failure fallback sequence a hotpplu event was sent to the user, but this is not requried as we are not changing the mode and instead only changing the link rate and lane count. User has no dependency with these parameters. Signed-off-by: Arun R Murthy --- drivers/gpu/drm/i915/display/intel_dp_link_training.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_dp_link_training.c b/drivers/gpu/drm/i915/display/intel_dp_link_training.c index 1abfafbbfa75..242cb08e9fc4 100644 --- a/drivers/gpu/drm/i915/display/intel_dp_link_training.c +++ b/drivers/gpu/drm/i915/display/intel_dp_link_training.c @@ -1074,8 +1074,6 @@ intel_dp_link_train_phy(struct intel_dp *intel_dp, static void intel_dp_schedule_fallback_link_training(struct intel_dp *intel_dp, const struct intel_crtc_state *crtc_state) { - struct intel_connector *intel_connector = intel_dp->attached_connector; - struct drm_i915_private *i915 = dp_to_i915(intel_dp); if (!intel_digital_port_connected(&dp_to_dig_port(intel_dp)->base)) { lt_dbg(intel_dp, DP_PHY_DPRX, "Link Training failed on disconnected sink.\n"); @@ -1092,8 +1090,7 @@ static void intel_dp_schedule_fallback_link_training(struct intel_dp *intel_dp, return; } - /* Schedule a Hotplug Uevent to userspace to start modeset */ - queue_work(i915->unordered_wq, &intel_connector->modeset_retry_work); + /* TODO: Re-visit, sending hotplug is not required. No need to notify user as we are not changing the mode */ } /* Perform the link training on all LTTPRs and the DPRX on a link. */ From patchwork Tue Feb 6 10:47:58 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Murthy, Arun R" X-Patchwork-Id: 13547020 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 1A0B8C48297 for ; Tue, 6 Feb 2024 10:58:27 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 7C9B910EB75; Tue, 6 Feb 2024 10:58:26 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="iPY0ZvqQ"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.7]) by gabe.freedesktop.org (Postfix) with ESMTPS id 9881D10E668 for ; Tue, 6 Feb 2024 10:58:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1707217104; x=1738753104; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=EHXjSEm0Z1E7QGHbXnZ+d+I2WIEJacqBZZHZsTFJ5RE=; b=iPY0ZvqQJWVGCRtRPEXNEoZhDt0T4Qhq8sal235oJOlZxI/HS7d2Cdon ebkSgAREUQi8zksV8pYDGpDCCjhc19pO0we0MteTLx6+VVPUL416NqVwb jfVT+5526iy1DHiTR38ECOkgGjzl0lX+J58nkRWK6GzEpgeiSKws3Y5Aq MBeOdLwMVPlQWfecvFjsz4X2k8rYhvJ2Y3aRSwBrp4dcBH7Aj464subq+ GIoMS7l9johyUFVIuHjv1euwHNbP3t06l8cBtvG3Vqjxe2zfwyIhmHwf5 UeyhpNwPTyyWD6qBxY/eNibMo+K+5Ye9tXWFWKLWU+j7nL5fbdDwr/z0J Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10975"; a="26164534" X-IronPort-AV: E=Sophos;i="6.05,247,1701158400"; d="scan'208";a="26164534" Received: from orviesa010.jf.intel.com ([10.64.159.150]) by fmvoesa101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Feb 2024 02:58:24 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.05,247,1701158400"; d="scan'208";a="1019181" Received: from srr4-3-linux-106-armuthy.iind.intel.com ([10.190.238.56]) by orviesa010.jf.intel.com with ESMTP; 06 Feb 2024 02:58:22 -0800 From: Arun R Murthy To: intel-gfx@lists.freedesktop.org Cc: jani.nikula@intel.com, imre.deak@intel.com, ville.syrjala@intel.com, uma.shankar@intel.com, Arun R Murthy Subject: [RFC 3/4] drm/i915/dp: use link rate and lane count in intel_dp struct Date: Tue, 6 Feb 2024 16:17:58 +0530 Message-Id: <20240206104759.2079133-4-arun.r.murthy@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240206104759.2079133-1-arun.r.murthy@intel.com> References: <20240206104759.2079133-1-arun.r.murthy@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" The link rate and lane count are now part of the intel_crtc_state structure. These two parameters are nothing to do with the crtc and are more confined to DP. TODO: Need to still seperate out the use of link rate and port clock which is in intel_dp and intel_crtc_state structure. Signed-off-by: Arun R Murthy --- drivers/gpu/drm/i915/display/intel_cx0_phy.c | 16 ++-- drivers/gpu/drm/i915/display/intel_ddi.c | 21 ++--- .../drm/i915/display/intel_ddi_buf_trans.c | 7 +- drivers/gpu/drm/i915/display/intel_dp.c | 8 +- drivers/gpu/drm/i915/display/intel_dp.h | 2 +- .../drm/i915/display/intel_dp_link_training.c | 81 ++++++++++--------- .../drm/i915/display/intel_dp_link_training.h | 2 +- drivers/gpu/drm/i915/display/intel_dp_mst.c | 29 ++++--- 8 files changed, 92 insertions(+), 74 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_cx0_phy.c b/drivers/gpu/drm/i915/display/intel_cx0_phy.c index 288a00e083c8..cde8f26ba26b 100644 --- a/drivers/gpu/drm/i915/display/intel_cx0_phy.c +++ b/drivers/gpu/drm/i915/display/intel_cx0_phy.c @@ -414,6 +414,7 @@ void intel_cx0_phy_set_signal_levels(struct intel_encoder *encoder, { struct drm_i915_private *i915 = to_i915(encoder->base.dev); const struct intel_ddi_buf_trans *trans; + struct intel_dp *intel_dp = enc_to_intel_dp(encoder); enum phy phy = intel_port_to_phy(i915, encoder->port); u8 owned_lane_mask; intel_wakeref_t wakeref; @@ -446,7 +447,7 @@ void intel_cx0_phy_set_signal_levels(struct intel_encoder *encoder, MB_WRITE_COMMITTED); } - for (ln = 0; ln < crtc_state->lane_count; ln++) { + for (ln = 0; ln < intel_dp->lane_count; ln++) { int level = intel_ddi_level(encoder, crtc_state, ln); int lane = ln / 2; int tx = ln % 2; @@ -2327,10 +2328,11 @@ static void intel_c20_pll_program(struct drm_i915_private *i915, const struct intel_crtc_state *crtc_state, struct intel_encoder *encoder) { + struct intel_dp *intel_dp = enc_to_intel_dp(encoder); const struct intel_c20pll_state *pll_state = &crtc_state->cx0pll_state.c20; bool dp = false; - int lane = crtc_state->lane_count > 2 ? INTEL_CX0_BOTH_LANES : INTEL_CX0_LANE0; - u32 clock = crtc_state->port_clock; + int lane = intel_dp->lane_count > 2 ? INTEL_CX0_BOTH_LANES : INTEL_CX0_LANE0; + u32 clock = intel_dp->link_rate; bool cntx; int i; @@ -2455,6 +2457,7 @@ static void intel_program_port_clock_ctl(struct intel_encoder *encoder, const struct intel_crtc_state *crtc_state, bool lane_reversal) { + struct intel_dp *intel_dp = enc_to_intel_dp(encoder); struct drm_i915_private *i915 = to_i915(encoder->base.dev); u32 val = 0; @@ -2475,7 +2478,7 @@ static void intel_program_port_clock_ctl(struct intel_encoder *encoder, /* TODO: HDMI FRL */ /* DP2.0 10G and 20G rates enable MPLLA*/ - if (crtc_state->port_clock == 1000000 || crtc_state->port_clock == 2000000) + if (intel_dp->link_rate == 1000000 || intel_dp->link_rate == 2000000) val |= crtc_state->cx0pll_state.ssc_enabled ? XELPDP_SSC_ENABLE_PLLA : 0; else val |= crtc_state->cx0pll_state.ssc_enabled ? XELPDP_SSC_ENABLE_PLLB : 0; @@ -2705,6 +2708,7 @@ static void intel_cx0pll_enable(struct intel_encoder *encoder, const struct intel_crtc_state *crtc_state) { struct drm_i915_private *i915 = to_i915(encoder->base.dev); + struct intel_dp *intel_dp = enc_to_intel_dp(encoder); enum phy phy = intel_port_to_phy(i915, encoder->port); struct intel_digital_port *dig_port = enc_to_dig_port(encoder); bool lane_reversal = dig_port->saved_port_bits & DDI_BUF_PORT_REVERSAL; @@ -2744,7 +2748,7 @@ static void intel_cx0pll_enable(struct intel_encoder *encoder, * 6. Program the enabled and disabled owned PHY lane * transmitters over message bus */ - intel_cx0_program_phy_lane(i915, encoder, crtc_state->lane_count, lane_reversal); + intel_cx0_program_phy_lane(i915, encoder, intel_dp->lane_count, lane_reversal); /* * 7. Follow the Display Voltage Frequency Switching - Sequence @@ -2756,7 +2760,7 @@ static void intel_cx0pll_enable(struct intel_encoder *encoder, * clock frequency. */ intel_de_write(i915, DDI_CLK_VALFREQ(encoder->port), - crtc_state->port_clock); + intel_dp->link_rate); /* * 9. Set PORT_CLOCK_CTL register PCLK PLL Request diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c index bea441590204..ed7620e7f763 100644 --- a/drivers/gpu/drm/i915/display/intel_ddi.c +++ b/drivers/gpu/drm/i915/display/intel_ddi.c @@ -334,18 +334,18 @@ static void intel_ddi_init_dp_buf_reg(struct intel_encoder *encoder, /* DDI_BUF_CTL_ENABLE will be set by intel_ddi_prepare_link_retrain() later */ intel_dp->DP = dig_port->saved_port_bits | - DDI_PORT_WIDTH(crtc_state->lane_count) | + DDI_PORT_WIDTH(intel_dp->lane_count) | DDI_BUF_TRANS_SELECT(0); if (DISPLAY_VER(i915) >= 14) { - if (intel_dp_is_uhbr(crtc_state)) + if (intel_dp_is_uhbr(intel_dp)) intel_dp->DP |= DDI_BUF_PORT_DATA_40BIT; else intel_dp->DP |= DDI_BUF_PORT_DATA_10BIT; } if (IS_ALDERLAKE_P(i915) && intel_phy_is_tc(i915, phy)) { - intel_dp->DP |= ddi_buf_phy_link_rate(crtc_state->port_clock); + intel_dp->DP |= ddi_buf_phy_link_rate(intel_dp->link_rate); if (!intel_tc_port_in_tbt_alt_mode(dig_port)) intel_dp->DP |= DDI_BUF_CTL_TC_PHY_OWNERSHIP; } @@ -456,10 +456,11 @@ intel_ddi_config_transcoder_dp2(struct intel_encoder *encoder, const struct intel_crtc_state *crtc_state) { struct drm_i915_private *i915 = to_i915(encoder->base.dev); + struct intel_dp *intel_dp = enc_to_intel_dp(encoder); enum transcoder cpu_transcoder = crtc_state->cpu_transcoder; u32 val = 0; - if (intel_dp_is_uhbr(crtc_state)) + if (intel_dp_is_uhbr(intel_dp)) val = TRANS_DP2_128B132B_CHANNEL_CODING; intel_de_write(i915, TRANS_DP2_CTL(cpu_transcoder), val); @@ -477,6 +478,7 @@ intel_ddi_transcoder_func_reg_val_get(struct intel_encoder *encoder, { struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); + struct intel_dp *intel_dp = enc_to_intel_dp(encoder); enum pipe pipe = crtc->pipe; enum transcoder cpu_transcoder = crtc_state->cpu_transcoder; enum port port = encoder->port; @@ -552,11 +554,11 @@ intel_ddi_transcoder_func_reg_val_get(struct intel_encoder *encoder, temp |= TRANS_DDI_MODE_SELECT_FDI_OR_128B132B; temp |= (crtc_state->fdi_lanes - 1) << 1; } else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DP_MST)) { - if (intel_dp_is_uhbr(crtc_state)) + if (intel_dp_is_uhbr(intel_dp)) temp |= TRANS_DDI_MODE_SELECT_FDI_OR_128B132B; else temp |= TRANS_DDI_MODE_SELECT_DP_MST; - temp |= DDI_PORT_WIDTH(crtc_state->lane_count); + temp |= DDI_PORT_WIDTH(intel_dp->lane_count); if (DISPLAY_VER(dev_priv) >= 12) { enum transcoder master; @@ -1414,7 +1416,7 @@ static int intel_ddi_dp_level(struct intel_dp *intel_dp, { u8 train_set = intel_dp->train_set[lane]; - if (intel_dp_is_uhbr(crtc_state)) { + if (intel_dp_is_uhbr(intel_dp)) { return train_set & DP_TX_FFE_PRESET_VALUE_MASK; } else { u8 signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | @@ -2456,15 +2458,16 @@ static void mtl_port_buf_ctl_program(struct intel_encoder *encoder, { struct drm_i915_private *i915 = to_i915(encoder->base.dev); struct intel_digital_port *dig_port = enc_to_dig_port(encoder); + struct intel_dp *intel_dp = enc_to_intel_dp(encoder); enum port port = encoder->port; u32 val; val = intel_de_read(i915, XELPDP_PORT_BUF_CTL1(i915, port)); val &= ~XELPDP_PORT_WIDTH_MASK; - val |= XELPDP_PORT_WIDTH(mtl_get_port_width(crtc_state->lane_count)); + val |= XELPDP_PORT_WIDTH(mtl_get_port_width(intel_dp->lane_count)); val &= ~XELPDP_PORT_BUF_PORT_DATA_WIDTH_MASK; - if (intel_dp_is_uhbr(crtc_state)) + if (intel_dp_is_uhbr(intel_dp)) val |= XELPDP_PORT_BUF_PORT_DATA_40BIT; else val |= XELPDP_PORT_BUF_PORT_DATA_10BIT; diff --git a/drivers/gpu/drm/i915/display/intel_ddi_buf_trans.c b/drivers/gpu/drm/i915/display/intel_ddi_buf_trans.c index de809e2d9cac..e490bffd3e49 100644 --- a/drivers/gpu/drm/i915/display/intel_ddi_buf_trans.c +++ b/drivers/gpu/drm/i915/display/intel_ddi_buf_trans.c @@ -1679,8 +1679,10 @@ dg2_get_snps_buf_trans(struct intel_encoder *encoder, const struct intel_crtc_state *crtc_state, int *n_entries) { + struct intel_dp *intel_dp = enc_to_intel_dp(encoder); + if (intel_crtc_has_dp_encoder(crtc_state) && - intel_dp_is_uhbr(crtc_state)) + intel_dp_is_uhbr(intel_dp)) return intel_get_buf_trans(&dg2_snps_trans_uhbr, n_entries); else return intel_get_buf_trans(&dg2_snps_trans, n_entries); @@ -1692,9 +1694,10 @@ mtl_get_cx0_buf_trans(struct intel_encoder *encoder, int *n_entries) { struct drm_i915_private *i915 = to_i915(encoder->base.dev); + struct intel_dp *intel_dp = enc_to_intel_dp(encoder); enum phy phy = intel_port_to_phy(i915, encoder->port); - if (intel_crtc_has_dp_encoder(crtc_state) && crtc_state->port_clock >= 1000000) + if (intel_crtc_has_dp_encoder(crtc_state) && intel_dp_is_uhbr(intel_dp)) return intel_get_buf_trans(&mtl_c20_trans_uhbr, n_entries); else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI) && !(intel_is_c10phy(i915, phy))) return intel_get_buf_trans(&mtl_c20_trans_hdmi, n_entries); diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index 82d354a6b0cd..ba3c8201c0ef 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -167,9 +167,9 @@ bool intel_dp_is_edp(struct intel_dp *intel_dp) static void intel_dp_unset_edid(struct intel_dp *intel_dp); /* Is link rate UHBR and thus 128b/132b? */ -bool intel_dp_is_uhbr(const struct intel_crtc_state *crtc_state) +bool intel_dp_is_uhbr(struct intel_dp *intel_dp) { - return drm_dp_is_uhbr_rate(crtc_state->port_clock); + return drm_dp_is_uhbr_rate(intel_dp->link_rate); } /** @@ -2901,12 +2901,14 @@ intel_dp_audio_compute_config(struct intel_encoder *encoder, struct intel_crtc_state *pipe_config, struct drm_connector_state *conn_state) { + struct intel_dp *intel_dp = enc_to_intel_dp(encoder); + pipe_config->has_audio = intel_dp_has_audio(encoder, pipe_config, conn_state) && intel_audio_compute_config(encoder, pipe_config, conn_state); pipe_config->sdp_split_enable = pipe_config->has_audio && - intel_dp_is_uhbr(pipe_config); + intel_dp_is_uhbr(intel_dp); } int diff --git a/drivers/gpu/drm/i915/display/intel_dp.h b/drivers/gpu/drm/i915/display/intel_dp.h index 530cc97bc42f..cc93c244a2f9 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.h +++ b/drivers/gpu/drm/i915/display/intel_dp.h @@ -80,7 +80,7 @@ void intel_dp_audio_compute_config(struct intel_encoder *encoder, struct drm_connector_state *conn_state); bool intel_dp_has_hdmi_sink(struct intel_dp *intel_dp); bool intel_dp_is_edp(struct intel_dp *intel_dp); -bool intel_dp_is_uhbr(const struct intel_crtc_state *crtc_state); +bool intel_dp_is_uhbr(struct intel_dp *intel_dp); int intel_dp_link_symbol_size(int rate); int intel_dp_link_symbol_clock(int rate); bool intel_dp_is_port_edp(struct drm_i915_private *dev_priv, enum port port); diff --git a/drivers/gpu/drm/i915/display/intel_dp_link_training.c b/drivers/gpu/drm/i915/display/intel_dp_link_training.c index 242cb08e9fc4..eb25b59a4eb3 100644 --- a/drivers/gpu/drm/i915/display/intel_dp_link_training.c +++ b/drivers/gpu/drm/i915/display/intel_dp_link_training.c @@ -355,7 +355,7 @@ static u8 intel_dp_get_lane_adjust_vswing_preemph(struct intel_dp *intel_dp, v = drm_dp_get_adjust_request_voltage(link_status, lane); p = drm_dp_get_adjust_request_pre_emphasis(link_status, lane); } else { - for (lane = 0; lane < crtc_state->lane_count; lane++) { + for (lane = 0; lane < intel_dp->lane_count; lane++) { v = max(v, drm_dp_get_adjust_request_voltage(link_status, lane)); p = max(p, drm_dp_get_adjust_request_pre_emphasis(link_status, lane)); } @@ -380,7 +380,7 @@ static u8 intel_dp_get_lane_adjust_train(struct intel_dp *intel_dp, const u8 link_status[DP_LINK_STATUS_SIZE], int lane) { - if (intel_dp_is_uhbr(crtc_state)) + if (intel_dp_is_uhbr(intel_dp)) return intel_dp_get_lane_adjust_tx_ffe_preset(intel_dp, crtc_state, dp_phy, link_status, lane); else @@ -419,18 +419,18 @@ intel_dp_get_adjust_train(struct intel_dp *intel_dp, { int lane; - if (intel_dp_is_uhbr(crtc_state)) { + if (intel_dp_is_uhbr(intel_dp)) { lt_dbg(intel_dp, dp_phy, "128b/132b, lanes: %d, " "TX FFE request: " TRAIN_REQ_FMT "\n", - crtc_state->lane_count, + intel_dp->lane_count, TRAIN_REQ_TX_FFE_ARGS(link_status)); } else { lt_dbg(intel_dp, dp_phy, "8b/10b, lanes: %d, " "vswing request: " TRAIN_REQ_FMT ", " "pre-emphasis request: " TRAIN_REQ_FMT "\n", - crtc_state->lane_count, + intel_dp->lane_count, TRAIN_REQ_VSWING_ARGS(link_status), TRAIN_REQ_PREEMPH_ARGS(link_status)); } @@ -464,7 +464,7 @@ intel_dp_set_link_train(struct intel_dp *intel_dp, buf[0] = dp_train_pat; /* DP_TRAINING_LANEx_SET follow DP_TRAINING_PATTERN_SET */ - memcpy(buf + 1, intel_dp->train_set, crtc_state->lane_count); + memcpy(buf + 1, intel_dp->train_set, intel_dp->lane_count); len = crtc_state->lane_count + 1; return drm_dp_dpcd_write(&intel_dp->aux, reg, buf, len) == len; @@ -531,18 +531,18 @@ void intel_dp_set_signal_levels(struct intel_dp *intel_dp, { struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base; - if (intel_dp_is_uhbr(crtc_state)) { + if (intel_dp_is_uhbr(intel_dp)){ lt_dbg(intel_dp, dp_phy, "128b/132b, lanes: %d, " "TX FFE presets: " TRAIN_SET_FMT "\n", - crtc_state->lane_count, + intel_dp->lane_count, TRAIN_SET_TX_FFE_ARGS(intel_dp->train_set)); } else { lt_dbg(intel_dp, dp_phy, "8b/10b, lanes: %d, " "vswing levels: " TRAIN_SET_FMT ", " "pre-emphasis levels: " TRAIN_SET_FMT "\n", - crtc_state->lane_count, + intel_dp->lane_count, TRAIN_SET_VSWING_ARGS(intel_dp->train_set), TRAIN_SET_PREEMPH_ARGS(intel_dp->train_set)); } @@ -575,9 +575,9 @@ intel_dp_update_link_train(struct intel_dp *intel_dp, intel_dp_set_signal_levels(intel_dp, crtc_state, dp_phy); ret = drm_dp_dpcd_write(&intel_dp->aux, reg, - intel_dp->train_set, crtc_state->lane_count); + intel_dp->train_set, intel_dp->lane_count); - return ret == crtc_state->lane_count; + return ret == intel_dp->lane_count; } /* 128b/132b */ @@ -618,10 +618,10 @@ static bool intel_dp_link_max_vswing_reached(struct intel_dp *intel_dp, { int lane; - for (lane = 0; lane < crtc_state->lane_count; lane++) { + for (lane = 0; lane < intel_dp->lane_count; lane++) { u8 train_set_lane = intel_dp->train_set[lane]; - if (intel_dp_is_uhbr(crtc_state)) { + if (intel_dp_is_uhbr(intel_dp)) { if (!intel_dp_lane_max_tx_ffe_reached(train_set_lane)) return false; } else { @@ -640,7 +640,7 @@ intel_dp_update_downspread_ctrl(struct intel_dp *intel_dp, u8 link_config[2]; link_config[0] = crtc_state->vrr.flipline ? DP_MSA_TIMING_PAR_IGNORE_EN : 0; - link_config[1] = intel_dp_is_uhbr(crtc_state) ? + link_config[1] = intel_dp_is_uhbr(intel_dp) ? DP_SET_ANSI_128B132B : DP_SET_ANSI_8B10B; drm_dp_dpcd_write(&intel_dp->aux, DP_DOWNSPREAD_CTRL, link_config, 2); } @@ -650,7 +650,7 @@ intel_dp_update_link_bw_set(struct intel_dp *intel_dp, const struct intel_crtc_state *crtc_state, u8 link_bw, u8 rate_select) { - u8 lane_count = crtc_state->lane_count; + u8 lane_count = intel_dp->lane_count; if (crtc_state->enhanced_framing) lane_count |= DP_LANE_COUNT_ENHANCED_FRAME_EN; @@ -689,7 +689,7 @@ intel_dp_prepare_link_train(struct intel_dp *intel_dp, if (intel_dp->prepare_link_retrain) intel_dp->prepare_link_retrain(intel_dp, crtc_state); - intel_dp_compute_rate(intel_dp, crtc_state->port_clock, + intel_dp_compute_rate(intel_dp, intel_dp->link_rate, &link_bw, &rate_select); /* @@ -730,16 +730,16 @@ intel_dp_prepare_link_train(struct intel_dp *intel_dp, return true; } -static bool intel_dp_adjust_request_changed(const struct intel_crtc_state *crtc_state, +static bool intel_dp_adjust_request_changed(struct intel_dp *intel_dp, const u8 old_link_status[DP_LINK_STATUS_SIZE], const u8 new_link_status[DP_LINK_STATUS_SIZE]) { int lane; - for (lane = 0; lane < crtc_state->lane_count; lane++) { + for (lane = 0; lane < intel_dp->lane_count; lane++) { u8 old, new; - if (intel_dp_is_uhbr(crtc_state)) { + if (intel_dp_is_uhbr(intel_dp)) { old = drm_dp_get_adjust_tx_ffe_preset(old_link_status, lane); new = drm_dp_get_adjust_tx_ffe_preset(new_link_status, lane); } else { @@ -783,7 +783,7 @@ intel_dp_link_training_clock_recovery(struct intel_dp *intel_dp, delay_us = drm_dp_read_clock_recovery_delay(&intel_dp->aux, intel_dp->dpcd, dp_phy, - intel_dp_is_uhbr(crtc_state)); + intel_dp_is_uhbr(intel_dp)); /* clock recovery */ if (!intel_dp_reset_link_train(intel_dp, crtc_state, dp_phy, @@ -816,7 +816,7 @@ intel_dp_link_training_clock_recovery(struct intel_dp *intel_dp, return false; } - if (drm_dp_clock_recovery_ok(link_status, crtc_state->lane_count)) { + if (drm_dp_clock_recovery_ok(link_status, intel_dp->lane_count)) { lt_dbg(intel_dp, dp_phy, "Clock recovery OK\n"); return true; } @@ -841,7 +841,7 @@ intel_dp_link_training_clock_recovery(struct intel_dp *intel_dp, return false; } - if (!intel_dp_adjust_request_changed(crtc_state, old_link_status, link_status)) + if (!intel_dp_adjust_request_changed(intel_dp, old_link_status, link_status)) ++voltage_tries; else voltage_tries = 1; @@ -872,7 +872,7 @@ static u32 intel_dp_training_pattern(struct intel_dp *intel_dp, bool source_tps3, sink_tps3, source_tps4, sink_tps4; /* UHBR+ use separate 128b/132b TPS2 */ - if (intel_dp_is_uhbr(crtc_state)) + if (intel_dp_is_uhbr(intel_dp)) return DP_TRAINING_PATTERN_2; /* @@ -886,7 +886,7 @@ static u32 intel_dp_training_pattern(struct intel_dp *intel_dp, drm_dp_tps4_supported(intel_dp->dpcd); if (source_tps4 && sink_tps4) { return DP_TRAINING_PATTERN_4; - } else if (crtc_state->port_clock == 810000) { + } else if (intel_dp->link_rate == 810000) { if (!source_tps4) lt_dbg(intel_dp, dp_phy, "8.1 Gbps link rate without source TPS4 support\n"); @@ -904,7 +904,7 @@ static u32 intel_dp_training_pattern(struct intel_dp *intel_dp, drm_dp_tps3_supported(intel_dp->dpcd); if (source_tps3 && sink_tps3) { return DP_TRAINING_PATTERN_3; - } else if (crtc_state->port_clock >= 540000) { + } else if (intel_dp->link_rate >= 540000) { if (!source_tps3) lt_dbg(intel_dp, dp_phy, ">=5.4/6.48 Gbps link rate without source TPS3 support\n"); @@ -934,7 +934,7 @@ intel_dp_link_training_channel_equalization(struct intel_dp *intel_dp, delay_us = drm_dp_read_channel_eq_delay(&intel_dp->aux, intel_dp->dpcd, dp_phy, - intel_dp_is_uhbr(crtc_state)); + intel_dp_is_uhbr(intel_dp)); training_pattern = intel_dp_training_pattern(intel_dp, crtc_state, dp_phy); /* Scrambling is disabled for TPS2/3 and enabled for TPS4 */ @@ -959,7 +959,7 @@ intel_dp_link_training_channel_equalization(struct intel_dp *intel_dp, /* Make sure clock is still ok */ if (!drm_dp_clock_recovery_ok(link_status, - crtc_state->lane_count)) { + intel_dp->lane_count)) { intel_dp_dump_link_status(intel_dp, dp_phy, link_status); lt_dbg(intel_dp, dp_phy, "Clock recovery check failed, cannot continue channel equalization\n"); @@ -967,7 +967,7 @@ intel_dp_link_training_channel_equalization(struct intel_dp *intel_dp, } if (drm_dp_channel_eq_ok(link_status, - crtc_state->lane_count)) { + intel_dp->lane_count)) { channel_eq = true; lt_dbg(intel_dp, dp_phy, "Channel EQ done. DP Training successful\n"); break; @@ -1041,7 +1041,7 @@ void intel_dp_stop_link_train(struct intel_dp *intel_dp, intel_dp_program_link_training_pattern(intel_dp, crtc_state, DP_PHY_DPRX, DP_TRAINING_PATTERN_DISABLE); - if (intel_dp_is_uhbr(crtc_state) && + if (intel_dp_is_uhbr(intel_dp) && wait_for(intel_dp_128b132b_intra_hop(intel_dp, crtc_state) == 0, 500)) { lt_dbg(intel_dp, DP_PHY_DPRX, "128b/132b intra-hop not clearing\n"); } @@ -1066,7 +1066,7 @@ intel_dp_link_train_phy(struct intel_dp *intel_dp, lt_dbg(intel_dp, dp_phy, "Link Training %s at link rate = %d, lane count = %d\n", ret ? "passed" : "failed", - crtc_state->port_clock, crtc_state->lane_count); + intel_dp->link_rate, intel_dp->lane_count); return ret; } @@ -1085,8 +1085,8 @@ static void intel_dp_schedule_fallback_link_training(struct intel_dp *intel_dp, "Link Training failed with HOBL active, not enabling it from now on\n"); intel_dp->hobl_failed = true; } else if (intel_dp_get_link_train_fallback_values(intel_dp, - crtc_state->port_clock, - crtc_state->lane_count)) { + intel_dp->link_rate, + intel_dp->lane_count)) { return; } @@ -1192,7 +1192,7 @@ intel_dp_128b132b_lane_eq(struct intel_dp *intel_dp, return false; } - if (drm_dp_128b132b_lane_channel_eq_done(link_status, crtc_state->lane_count)) { + if (drm_dp_128b132b_lane_channel_eq_done(link_status, intel_dp->lane_count)) { lt_dbg(intel_dp, DP_PHY_DPRX, "Lane channel eq done\n"); break; } @@ -1287,7 +1287,7 @@ intel_dp_128b132b_lane_cds(struct intel_dp *intel_dp, if (drm_dp_128b132b_eq_interlane_align_done(link_status) && drm_dp_128b132b_cds_interlane_align_done(link_status) && - drm_dp_128b132b_lane_symbol_locked(link_status, crtc_state->lane_count)) { + drm_dp_128b132b_lane_symbol_locked(link_status, intel_dp->lane_count)) { lt_dbg(intel_dp, DP_PHY_DPRX, "CDS interlane align done\n"); break; } @@ -1330,7 +1330,7 @@ intel_dp_128b132b_link_train(struct intel_dp *intel_dp, lt_dbg(intel_dp, DP_PHY_DPRX, "128b/132b Link Training %s at link rate = %d, lane count = %d\n", passed ? "passed" : "failed", - crtc_state->port_clock, crtc_state->lane_count); + intel_dp->link_rate, intel_dp->lane_count); return passed; } @@ -1344,8 +1344,9 @@ intel_dp_128b132b_link_train(struct intel_dp *intel_dp, * retraining with reduced link rate/lane parameters if the link training * fails. * After calling this function intel_dp_stop_link_train() must be called. + * Return: Link trained status success/failure. */ -void intel_dp_start_link_train(struct intel_dp *intel_dp, +bool intel_dp_start_link_train(struct intel_dp *intel_dp, const struct intel_crtc_state *crtc_state) { struct drm_i915_private *i915 = dp_to_i915(intel_dp); @@ -1363,7 +1364,7 @@ void intel_dp_start_link_train(struct intel_dp *intel_dp, intel_dp_prepare_link_train(intel_dp, crtc_state); - if (intel_dp_is_uhbr(crtc_state)) + if (intel_dp_is_uhbr(intel_dp)) passed = intel_dp_128b132b_link_train(intel_dp, crtc_state, lttpr_count); else passed = intel_dp_link_train_all_phys(intel_dp, crtc_state, lttpr_count); @@ -1382,11 +1383,13 @@ void intel_dp_start_link_train(struct intel_dp *intel_dp, */ if (!passed && i915->display.hotplug.ignore_long_hpd) { lt_dbg(intel_dp, DP_PHY_DPRX, "Ignore the link failure\n"); - return; + return true; } if (!passed) intel_dp_schedule_fallback_link_training(intel_dp, crtc_state); + + return passed; } void intel_dp_128b132b_sdp_crc16(struct intel_dp *intel_dp, @@ -1398,7 +1401,7 @@ void intel_dp_128b132b_sdp_crc16(struct intel_dp *intel_dp, * Default value of bit 31 is '0' hence discarding the write * TODO: Corrective actions on SDP corruption yet to be defined */ - if (!intel_dp_is_uhbr(crtc_state)) + if (!intel_dp_is_uhbr(intel_dp)) return; /* DP v2.0 SCR on SDP CRC16 for 128b/132b Link Layer */ diff --git a/drivers/gpu/drm/i915/display/intel_dp_link_training.h b/drivers/gpu/drm/i915/display/intel_dp_link_training.h index 2c8f2775891b..601f7e80476e 100644 --- a/drivers/gpu/drm/i915/display/intel_dp_link_training.h +++ b/drivers/gpu/drm/i915/display/intel_dp_link_training.h @@ -24,7 +24,7 @@ void intel_dp_program_link_training_pattern(struct intel_dp *intel_dp, void intel_dp_set_signal_levels(struct intel_dp *intel_dp, const struct intel_crtc_state *crtc_state, enum drm_dp_phy dp_phy); -void intel_dp_start_link_train(struct intel_dp *intel_dp, +bool intel_dp_start_link_train(struct intel_dp *intel_dp, const struct intel_crtc_state *crtc_state); void intel_dp_stop_link_train(struct intel_dp *intel_dp, const struct intel_crtc_state *crtc_state); diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c b/drivers/gpu/drm/i915/display/intel_dp_mst.c index 5fa25a5a36b5..27994a3b568c 100644 --- a/drivers/gpu/drm/i915/display/intel_dp_mst.c +++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c @@ -52,13 +52,13 @@ static int intel_dp_mst_check_constraints(struct drm_i915_private *i915, int bpp, const struct drm_display_mode *adjusted_mode, - struct intel_crtc_state *crtc_state, + struct intel_dp *intel_dp, bool dsc) { - if (intel_dp_is_uhbr(crtc_state) && DISPLAY_VER(i915) < 14 && dsc) { + if (intel_dp_is_uhbr(intel_dp) && DISPLAY_VER(i915) < 14 && dsc) { int output_bpp = bpp; /* DisplayPort 2 128b/132b, bits per lane is always 32 */ - int symbol_clock = crtc_state->port_clock / 32; + int symbol_clock = intel_dp->link_rate / 32; if (output_bpp * adjusted_mode->crtc_clock >= symbol_clock * 72) { @@ -71,7 +71,8 @@ static int intel_dp_mst_check_constraints(struct drm_i915_private *i915, int bpp return 0; } -static int intel_dp_mst_bw_overhead(const struct intel_crtc_state *crtc_state, +static int intel_dp_mst_bw_overhead(struct intel_dp *intel_dp, + const struct intel_crtc_state *crtc_state, const struct intel_connector *connector, bool ssc, bool dsc, int bpp_x16) { @@ -81,7 +82,7 @@ static int intel_dp_mst_bw_overhead(const struct intel_crtc_state *crtc_state, int dsc_slice_count = 0; int overhead; - flags |= intel_dp_is_uhbr(crtc_state) ? DRM_DP_BW_OVERHEAD_UHBR : 0; + flags |= intel_dp_is_uhbr(intel_dp) ? DRM_DP_BW_OVERHEAD_UHBR : 0; flags |= ssc ? DRM_DP_BW_OVERHEAD_SSC_REF_CLK : 0; flags |= crtc_state->fec_enable ? DRM_DP_BW_OVERHEAD_FEC : 0; @@ -170,12 +171,12 @@ static int intel_dp_mst_find_vcpi_slots_for_bpp(struct intel_encoder *encoder, if (!intel_dp_supports_fec(intel_dp, connector, crtc_state)) return -EINVAL; - crtc_state->fec_enable = !intel_dp_is_uhbr(crtc_state); + crtc_state->fec_enable = !intel_dp_is_uhbr(intel_dp); } mst_state->pbn_div = drm_dp_get_vc_payload_bw(&intel_dp->mst_mgr, - crtc_state->port_clock, - crtc_state->lane_count); + intel_dp->link_rate, + intel_dp->lane_count); drm_dbg_kms(&i915->drm, "Looking for slots in range min bpp %d max bpp %d\n", min_bpp, max_bpp); @@ -188,16 +189,18 @@ static int intel_dp_mst_find_vcpi_slots_for_bpp(struct intel_encoder *encoder, drm_dbg_kms(&i915->drm, "Trying bpp %d\n", bpp); - ret = intel_dp_mst_check_constraints(i915, bpp, adjusted_mode, crtc_state, dsc); + ret = intel_dp_mst_check_constraints(i915, bpp, adjusted_mode, intel_dp, dsc); if (ret) continue; link_bpp_x16 = to_bpp_x16(dsc ? bpp : intel_dp_output_bpp(crtc_state->output_format, bpp)); - local_bw_overhead = intel_dp_mst_bw_overhead(crtc_state, connector, + local_bw_overhead = intel_dp_mst_bw_overhead(intel_dp, + crtc_state, connector, false, dsc, link_bpp_x16); - remote_bw_overhead = intel_dp_mst_bw_overhead(crtc_state, connector, + remote_bw_overhead = intel_dp_mst_bw_overhead(intel_dp, + crtc_state, connector, true, dsc, link_bpp_x16); intel_dp_mst_compute_m_n(crtc_state, connector, @@ -368,7 +371,7 @@ static int intel_dp_mst_update_slots(struct intel_encoder *encoder, struct intel_dp *intel_dp = &intel_mst->primary->dp; struct drm_dp_mst_topology_mgr *mgr = &intel_dp->mst_mgr; struct drm_dp_mst_topology_state *topology_state; - u8 link_coding_cap = intel_dp_is_uhbr(crtc_state) ? + u8 link_coding_cap = intel_dp_is_uhbr(intel_dp) ? DP_CAP_ANSI_128B132B : DP_CAP_ANSI_8B10B; topology_state = drm_atomic_get_mst_topology_state(conn_state->state, mgr); @@ -1123,7 +1126,7 @@ static void intel_mst_enable_dp(struct intel_atomic_state *state, drm_WARN_ON(&dev_priv->drm, pipe_config->has_pch_encoder); - if (intel_dp_is_uhbr(pipe_config)) { + if (intel_dp_is_uhbr(intel_dp)) { const struct drm_display_mode *adjusted_mode = &pipe_config->hw.adjusted_mode; u64 crtc_clock_hz = KHz(adjusted_mode->crtc_clock); From patchwork Tue Feb 6 10:47:59 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Murthy, Arun R" X-Patchwork-Id: 13547021 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 B6383C4828D for ; Tue, 6 Feb 2024 10:58:28 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id DE8DF10EB7D; Tue, 6 Feb 2024 10:58:27 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="Ghm9BR+3"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.7]) by gabe.freedesktop.org (Postfix) with ESMTPS id 7CD7810EB7D for ; Tue, 6 Feb 2024 10:58:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1707217106; x=1738753106; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=ldOMe8fJGeZfEl9BAbKKWSUbBq/HWKbBaQF5bfbtbao=; b=Ghm9BR+30+KskzWaS3HPRpMb0j/QLXeJjsHeJSNJh0fys6QwDIXe/HeY EQ0Jny4zIhRwFa2O5Qm4GNwPTkQN1Wm+AXAYxUTrLqdzXyZMQFoztrwou KsNy3pvHt+c5eOGTtiYoMsRRJAOWM4TV3EST1ZlJ+sYSkZlwaPIJLDhE0 Ii7K8V7Y4LDokROeDIYoqxxWrRNFcPErKXDRJPkdrif4NJbjwfqQusNdO 8iknz8ivmE07ca3AW9Bcqk+/9Tj8JFvCeSJ7oNyApzg2zM8AOFCBqThO/ RN34+okhTtB2IM7v9qLhywADlAjBo/iuBZzD2/11O+R4YjkJZ1Z9ICptl Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10975"; a="26164536" X-IronPort-AV: E=Sophos;i="6.05,247,1701158400"; d="scan'208";a="26164536" Received: from orviesa010.jf.intel.com ([10.64.159.150]) by fmvoesa101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Feb 2024 02:58:26 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.05,247,1701158400"; d="scan'208";a="1019189" Received: from srr4-3-linux-106-armuthy.iind.intel.com ([10.190.238.56]) by orviesa010.jf.intel.com with ESMTP; 06 Feb 2024 02:58:25 -0800 From: Arun R Murthy To: intel-gfx@lists.freedesktop.org Cc: jani.nikula@intel.com, imre.deak@intel.com, ville.syrjala@intel.com, uma.shankar@intel.com, Arun R Murthy Subject: [RFC 4/4] drm/i915/display/dp: On LT failure retry LT Date: Tue, 6 Feb 2024 16:17:59 +0530 Message-Id: <20240206104759.2079133-5-arun.r.murthy@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240206104759.2079133-1-arun.r.murthy@intel.com> References: <20240206104759.2079133-1-arun.r.murthy@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" On link training failure retry link training with a lesser link rate/lane count as specified in the DP spec. Signed-off-by: Arun R Murthy --- drivers/gpu/drm/i915/display/intel_ddi.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c index ed7620e7f763..29d785a4b904 100644 --- a/drivers/gpu/drm/i915/display/intel_ddi.c +++ b/drivers/gpu/drm/i915/display/intel_ddi.c @@ -2502,6 +2502,7 @@ static void mtl_ddi_pre_enable_dp(struct intel_atomic_state *state, crtc_state->port_clock, crtc_state->lane_count); +retry: /* * We only configure what the register value will be here. Actual * enabling happens during link training farther down. @@ -2586,7 +2587,14 @@ static void mtl_ddi_pre_enable_dp(struct intel_atomic_state *state, * Pattern, wait for 5 idle patterns (DP_TP_STATUS Min_Idles_Sent) * (timeout after 800 us) */ - intel_dp_start_link_train(intel_dp, crtc_state); + if (!intel_dp_start_link_train(intel_dp, crtc_state)) { + /* Link Training failed, retain */ + intel_dp->link_trained = false; + intel_dp_stop_link_train(intel_dp, crtc_state); + encoder->post_disable(state, encoder, + crtc_state, conn_state); + goto retry; + } /* 6.n Set DP_TP_CTL link training to Normal */ if (!is_trans_port_sync_mode(crtc_state))