From patchwork Fri Jun 9 17:42:11 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Golani, Mitulkumar Ajitkumar" X-Patchwork-Id: 13274255 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 55F6DC7EE45 for ; Fri, 9 Jun 2023 17:41:21 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id B0DE510E168; Fri, 9 Jun 2023 17:41:20 +0000 (UTC) Received: from mga12.intel.com (mga12.intel.com [192.55.52.136]) by gabe.freedesktop.org (Postfix) with ESMTPS id 3279D10E165 for ; Fri, 9 Jun 2023 17:41:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1686332476; x=1717868476; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=oetKf0+C/GFZAIGI2SBXBUg8+zAsUZ43QcNx7I+vTYI=; b=iREEsMwJ7VeyRXfwqb7SCPr3EEjdSkakAfi78gwz6YW2qeh0nb86suWc 6q5BpBmTqDJLz/PDpux5Ya4uue1Ebl+F7L+Vo8EF0tUM3tHotCanjQuzI 6AazEU1YSiVy8wU8/DbwDnWpnig6baRG11uKeTBWt67M6TYYqp6L1O8VL U9Ut7E6GSPhNTGV9qag+spKTmKjS5PHsd3DVhKH+oPwP3O1/Xf8Hs0AnW t+ccUmdIOiw9MLWPg7VmMW/QbXCLU7tipS23DtNPJmJtCVwgujWBir2zi 95xOXBKih7fAoeV/sPPzPBj7yqbSbVM4sY8xpp97hboHgXydWplCBeS72 w==; X-IronPort-AV: E=McAfee;i="6600,9927,10736"; a="337289212" X-IronPort-AV: E=Sophos;i="6.00,230,1681196400"; d="scan'208";a="337289212" Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Jun 2023 10:41:16 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10736"; a="780394487" X-IronPort-AV: E=Sophos;i="6.00,230,1681196400"; d="scan'208";a="780394487" Received: from mgolanimitul-x299-ud4-pro.iind.intel.com ([10.190.239.114]) by fmsmga004.fm.intel.com with ESMTP; 09 Jun 2023 10:41:14 -0700 From: Mitul Golani To: intel-gfx@lists.freedesktop.org Date: Fri, 9 Jun 2023 23:12:11 +0530 Message-Id: <20230609174212.1946930-3-mitulkumar.ajitkumar.golani@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230609174212.1946930-1-mitulkumar.ajitkumar.golani@intel.com> References: <20230609174212.1946930-1-mitulkumar.ajitkumar.golani@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [RFC 2/3] drm/i915/display: Configure and initialize HDMI audio capabilities 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" Initialize the source audio capabilities for HDMI in crtc_state property by setting them to their maximum supported values, including max_channel and max_frequency. This allows for the calculation of HDMI audio source capabilities with respect to the available mode bandwidth. These capabilities encompass parameters such as supported frequency and channel configurations. --v1: - Refactor max_channel and max_rate to this commit as it is being initialised here - Remove call for intel_audio_compute_eld to avoid any regression while merge. instead call it in different commit when it is defined. - Use int instead of unsigned int for max_channel and max_frequecy - Update commit message and header Signed-off-by: Mitul Golani --- .../drm/i915/display/intel_display_types.h | 6 ++++ drivers/gpu/drm/i915/display/intel_hdmi.c | 35 +++++++++++++++++++ drivers/gpu/drm/i915/display/intel_hdmi.h | 1 + 3 files changed, 42 insertions(+) diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h index ebd147180a6e..74eee87d2df1 100644 --- a/drivers/gpu/drm/i915/display/intel_display_types.h +++ b/drivers/gpu/drm/i915/display/intel_display_types.h @@ -1131,6 +1131,12 @@ struct intel_crtc_state { struct { bool has_audio; + + /* Audio rate in Hz */ + int max_frequency; + + /* Number of audio channels */ + int max_channel; } audio; /* diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c index 32157bef2eef..0188a600f9f5 100644 --- a/drivers/gpu/drm/i915/display/intel_hdmi.c +++ b/drivers/gpu/drm/i915/display/intel_hdmi.c @@ -2277,6 +2277,40 @@ bool intel_hdmi_compute_has_hdmi_sink(struct intel_encoder *encoder, !intel_hdmi_is_cloned(crtc_state); } +static unsigned int calc_audio_bw(int channel, int frequency) +{ + int bits_per_sample = 32; + unsigned int bandwidth = channel * frequency * bits_per_sample; + return bandwidth; +} + +void +intel_hdmi_audio_compute_config(struct intel_crtc_state *pipe_config) +{ + struct drm_display_mode *adjusted_mode = &pipe_config->hw.adjusted_mode; + int num_of_channel, aud_rates[7] = {192000, 176000, 96000, 88000, 48000, 44100, 32000}; + unsigned int audio_req_bandwidth, available_blank_bandwidth, vblank, hblank; + + hblank = adjusted_mode->htotal - adjusted_mode->hdisplay; + vblank = adjusted_mode->vtotal - adjusted_mode->vdisplay; + available_blank_bandwidth = hblank * vblank * + drm_mode_vrefresh(adjusted_mode) * pipe_config->pipe_bpp; + for (num_of_channel = 8; num_of_channel > 0; num_of_channel--) { + for (int index = 0; index < 7; index++) { + audio_req_bandwidth = calc_audio_bw(num_of_channel, + aud_rates[index]); + if (audio_req_bandwidth < available_blank_bandwidth) { + pipe_config->audio.max_frequency = aud_rates[index]; + pipe_config->audio.max_channel = num_of_channel; + return; + } + } + } + + pipe_config->audio.max_frequency = 0; + pipe_config->audio.max_channel = 0; +} + int intel_hdmi_compute_config(struct intel_encoder *encoder, struct intel_crtc_state *pipe_config, struct drm_connector_state *conn_state) @@ -2344,6 +2378,7 @@ int intel_hdmi_compute_config(struct intel_encoder *encoder, pipe_config->hdmi_high_tmds_clock_ratio = true; } } + intel_hdmi_audio_compute_config(pipe_config); intel_hdmi_compute_gcp_infoframe(encoder, pipe_config, conn_state); diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.h b/drivers/gpu/drm/i915/display/intel_hdmi.h index 6b39df38d57a..6df303daf348 100644 --- a/drivers/gpu/drm/i915/display/intel_hdmi.h +++ b/drivers/gpu/drm/i915/display/intel_hdmi.h @@ -27,6 +27,7 @@ void intel_hdmi_init_connector(struct intel_digital_port *dig_port, bool intel_hdmi_compute_has_hdmi_sink(struct intel_encoder *encoder, const struct intel_crtc_state *crtc_state, const struct drm_connector_state *conn_state); +void intel_hdmi_audio_compute_config(struct intel_crtc_state *pipe_config); int intel_hdmi_compute_config(struct intel_encoder *encoder, struct intel_crtc_state *pipe_config, struct drm_connector_state *conn_state);