From patchwork Fri Jan 3 13:52:29 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jani Nikula X-Patchwork-Id: 13925587 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 CE897E77198 for ; Fri, 3 Jan 2025 13:53:16 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 7C79C10E8CA; Fri, 3 Jan 2025 13:53:16 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="Gt98tCXi"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.10]) by gabe.freedesktop.org (Postfix) with ESMTPS id E355A10E8C9; Fri, 3 Jan 2025 13:53:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1735912395; x=1767448395; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=/q0tFjGcUbpWXfPwcN/jnXSinGdAZj/Kb5RtebRt8dE=; b=Gt98tCXigpq4I52IwwzsAVZRuHF2MP+phZMT/P6KZAA0/+N8ETCXpju3 mbvfyaJBQHsu+DpyqyFDHG09PlgI7AHZR+UZpVNdcHsPYExg4U/y+/8d9 pJYZug1rWHBx3WLpaK3V/RxbcpAc3NApcnaCOLW6wODPBzA7AhHCspad0 rM+RDpXWO6vGy9zo6LQjAws/H6089B8LZBcPf5P+Ib3fKAMzoz28wc183 qvbbmJ94KMeFG1LA+OrTBQKuiK5a2AkG2mJylgZG3zXi7A3dz1ibdZkSk HRXtn43mmcg/Th2sP748i898/nHkHTHvcva/Bnd4E60/K6/IK6MV1S6qH w==; X-CSE-ConnectionGUID: DFgVgyWoQyOsPQ2F5ULc6w== X-CSE-MsgGUID: GCXDhf8HQ+yTdlMd/tPujA== X-IronPort-AV: E=McAfee;i="6700,10204,11304"; a="47573816" X-IronPort-AV: E=Sophos;i="6.12,286,1728975600"; d="scan'208";a="47573816" Received: from fmviesa001.fm.intel.com ([10.60.135.141]) by fmvoesa104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Jan 2025 05:53:15 -0800 X-CSE-ConnectionGUID: bTjsr10ZT7ucdyb0LndNHA== X-CSE-MsgGUID: b3vteWeKRQW9oAsCByCnMg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.12,224,1728975600"; d="scan'208";a="132716732" Received: from dprybysh-mobl.ger.corp.intel.com (HELO localhost) ([10.245.246.242]) by smtpauth.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Jan 2025 05:53:12 -0800 From: Jani Nikula To: intel-gfx@lists.freedesktop.org, intel-xe@lists.freedesktop.org Cc: imre.deak@intel.com, jani.nikula@intel.com Subject: [PATCH v3 06/16] drm/i915/mst: split out a helper for figuring out the TU Date: Fri, 3 Jan 2025 15:52:29 +0200 Message-Id: X-Mailer: git-send-email 2.39.5 In-Reply-To: References: MIME-Version: 1.0 Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo 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" Extract intel_dp_mtp_tu_compute_config() for figuring out the TU. Move the link configuration and mst state access to the callers. This will be easier to adapt to 128b/132b SST. v2: Don't add SST stuff here yet Reviewed-by: Imre Deak Signed-off-by: Jani Nikula --- drivers/gpu/drm/i915/display/intel_dp_mst.c | 53 ++++++++++++++------- drivers/gpu/drm/i915/display/intel_dp_mst.h | 7 +++ 2 files changed, 42 insertions(+), 18 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c b/drivers/gpu/drm/i915/display/intel_dp_mst.c index 5f1582ad9d41..e1d56a689962 100644 --- a/drivers/gpu/drm/i915/display/intel_dp_mst.c +++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c @@ -209,31 +209,23 @@ static int intel_dp_mst_dsc_get_slice_count(const struct intel_connector *connec num_joined_pipes); } -static int mst_stream_find_vcpi_slots_for_bpp(struct intel_dp *intel_dp, - struct intel_crtc_state *crtc_state, - int max_bpp, int min_bpp, - struct link_config_limits *limits, - struct drm_connector_state *conn_state, - int step, bool dsc) +int intel_dp_mtp_tu_compute_config(struct intel_dp *intel_dp, + struct intel_crtc_state *crtc_state, + int max_bpp, int min_bpp, + struct drm_connector_state *conn_state, + int step, bool dsc) { struct intel_display *display = to_intel_display(intel_dp); struct drm_atomic_state *state = crtc_state->uapi.state; - struct drm_dp_mst_topology_state *mst_state; struct intel_connector *connector = to_intel_connector(conn_state->connector); const struct drm_display_mode *adjusted_mode = &crtc_state->hw.adjusted_mode; + fixed20_12 pbn_div; int bpp, slots = -EINVAL; int dsc_slice_count = 0; int max_dpt_bpp; - mst_state = drm_atomic_get_mst_topology_state(state, &intel_dp->mst_mgr); - if (IS_ERR(mst_state)) - return PTR_ERR(mst_state); - - crtc_state->lane_count = limits->max_lane_count; - crtc_state->port_clock = limits->max_rate; - if (dsc) { if (!intel_dp_supports_fec(intel_dp, connector, crtc_state)) return -EINVAL; @@ -241,8 +233,8 @@ static int mst_stream_find_vcpi_slots_for_bpp(struct intel_dp *intel_dp, crtc_state->fec_enable = !intel_dp_is_uhbr(crtc_state); } - mst_state->pbn_div = drm_dp_get_vc_payload_bw(crtc_state->port_clock, - crtc_state->lane_count); + pbn_div = drm_dp_get_vc_payload_bw(crtc_state->port_clock, + crtc_state->lane_count); max_dpt_bpp = intel_dp_mst_max_dpt_bpp(crtc_state, dsc); if (max_bpp > max_dpt_bpp) { @@ -302,7 +294,7 @@ static int mst_stream_find_vcpi_slots_for_bpp(struct intel_dp *intel_dp, pbn.full = dfixed_const(intel_dp_mst_calc_pbn(adjusted_mode->crtc_clock, link_bpp_x16, remote_bw_overhead)); - remote_tu = DIV_ROUND_UP(pbn.full, mst_state->pbn_div.full); + remote_tu = DIV_ROUND_UP(pbn.full, pbn_div.full); /* * Aligning the TUs ensures that symbols consisting of multiple @@ -320,7 +312,7 @@ static int mst_stream_find_vcpi_slots_for_bpp(struct intel_dp *intel_dp, * allocated for the whole path and the TUs allocated for the * first branch device's link also applies here. */ - pbn.full = remote_tu * mst_state->pbn_div.full; + pbn.full = remote_tu * pbn_div.full; drm_WARN_ON(display->drm, remote_tu < crtc_state->dp_m_n.tu); crtc_state->dp_m_n.tu = remote_tu; @@ -355,6 +347,31 @@ static int mst_stream_find_vcpi_slots_for_bpp(struct intel_dp *intel_dp, return 0; } +static int mst_stream_find_vcpi_slots_for_bpp(struct intel_dp *intel_dp, + struct intel_crtc_state *crtc_state, + int max_bpp, int min_bpp, + struct link_config_limits *limits, + struct drm_connector_state *conn_state, + int step, bool dsc) +{ + struct drm_atomic_state *state = crtc_state->uapi.state; + struct drm_dp_mst_topology_state *mst_state; + + mst_state = drm_atomic_get_mst_topology_state(state, &intel_dp->mst_mgr); + if (IS_ERR(mst_state)) + return PTR_ERR(mst_state); + + crtc_state->lane_count = limits->max_lane_count; + crtc_state->port_clock = limits->max_rate; + + mst_state->pbn_div = drm_dp_get_vc_payload_bw(crtc_state->port_clock, + crtc_state->lane_count); + + return intel_dp_mtp_tu_compute_config(intel_dp, crtc_state, + max_bpp, min_bpp, + conn_state, step, dsc); +} + static int mst_stream_compute_link_config(struct intel_dp *intel_dp, struct intel_crtc_state *crtc_state, struct drm_connector_state *conn_state, diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.h b/drivers/gpu/drm/i915/display/intel_dp_mst.h index 8343804ce3f8..c6bdc1d190a4 100644 --- a/drivers/gpu/drm/i915/display/intel_dp_mst.h +++ b/drivers/gpu/drm/i915/display/intel_dp_mst.h @@ -8,6 +8,7 @@ #include +struct drm_connector_state; struct intel_atomic_state; struct intel_crtc; struct intel_crtc_state; @@ -30,4 +31,10 @@ bool intel_dp_mst_crtc_needs_modeset(struct intel_atomic_state *state, void intel_dp_mst_prepare_probe(struct intel_dp *intel_dp); bool intel_dp_mst_verify_dpcd_state(struct intel_dp *intel_dp); +int intel_dp_mtp_tu_compute_config(struct intel_dp *intel_dp, + struct intel_crtc_state *crtc_state, + int max_bpp, int min_bpp, + struct drm_connector_state *conn_state, + int step, bool dsc); + #endif /* __INTEL_DP_MST_H__ */