From mboxrd@z Thu Jan 1 00:00:00 1970 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 79A0EC433EF for ; Mon, 27 Dec 2021 09:34:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235825AbhL0JeD (ORCPT ); Mon, 27 Dec 2021 04:34:03 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40664 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235818AbhL0JeB (ORCPT ); Mon, 27 Dec 2021 04:34:01 -0500 Received: from mail-ed1-x533.google.com (mail-ed1-x533.google.com [IPv6:2a00:1450:4864:20::533]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1A584C061401 for ; Mon, 27 Dec 2021 01:34:01 -0800 (PST) Received: by mail-ed1-x533.google.com with SMTP id j21so59508112edt.9 for ; Mon, 27 Dec 2021 01:34:01 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20210112.gappssmtp.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=Up09Yp1cAkGEwJVvJMibaaAPFlik/zZFWIRClXIemi8=; b=Sc1s1Htt/pYoJUtWHYVVXf8lsx8AjMP3yM5bjDGm12A2Hlm4iUHrUtGOB2MlPZQYii Fz+WFfonZDX5W9mMlheSY+PeszwXZbKi+pDB4SJl+1ekUoaTtawhUiPN320gVRpOj9BD pg/tvFs2yhhCt1p5H8vrar3vXBzKPVV1FbDXRg7B8LlU93kiU+ktDKV4fgBNJM/DNvsy 4tkYelN9qwruOC7txNCwPiUWgGTJAOGO1JgqXjv9kZg7WaDAFtUZoIlGbmGiuZZnuIAh EnIpW9Ma49zAsv4ZjM/NoEu5j0jk5pBPWnojzRg66lX1YQ96J+w/ZFf8LfREL0cb8NJy epKg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=Up09Yp1cAkGEwJVvJMibaaAPFlik/zZFWIRClXIemi8=; b=uFGlQ8o9mw1ERq1281Je9bFvhc4FgT+P3K/1vxX9jAt4T4mvEuJxfQ4q12pUsLhITJ 1gsxcBSeEXLa9N/E1gQTcs+/YxjY8wGt2lGdXLFWa7XRVF5Z7jYjCAAP+4rFgYHCqp4u UFLFFL665tlwfgJ99bCTQIsLs386fOUhkiWpabENYy+zeXNbLAgx2HtGdLtl8/3krm9N WNWAIhZ76LBazjNSpnabOkAzEEjGJUFez8PB/MZSOFNUGjXnGc1n46zA1924YyOEPiL/ gPAds6o0dA032eOeoocfSixDeGOa12x+y52nv9ngyNrOW6TjwcVLtMhtUibM5RwPziqa qxgg== X-Gm-Message-State: AOAM53241OH2+zE4CujOL0TOQiBjZHu3GKHKbNPKbVN24W2DpP+Y7S5x sSN884JiHFzF4lffyWa+yF6rWw== X-Google-Smtp-Source: ABdhPJyr6GYj10UrcnLO/EuXsvTRoRAzenXzwU4phjK7PkxETU1Ce+JbcK69SLvTat82vXTnkGFX2w== X-Received: by 2002:a17:907:7f13:: with SMTP id qf19mr12952458ejc.103.1640597639584; Mon, 27 Dec 2021 01:33:59 -0800 (PST) Received: from localhost.localdomain (2a02-8440-6140-7e07-3074-96af-9642-0003.rev.sfr.net. [2a02:8440:6140:7e07:3074:96af:9642:3]) by smtp.gmail.com with ESMTPSA id qf14sm4287568ejc.18.2021.12.27.01.33.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 27 Dec 2021 01:33:59 -0800 (PST) From: Guillaume Ranquet To: Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter Cc: Markus Schneider-Pargmann , dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v7 4/8] video/hdmi: Add audio_infoframe packing for DP Date: Mon, 27 Dec 2021 10:33:28 +0100 Message-Id: <20211227093329.5589-2-granquet@baylibre.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20211217150854.2081-1-granquet@baylibre.com> References: <20211217150854.2081-1-granquet@baylibre.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Markus Schneider-Pargmann Similar to HDMI, DP uses audio infoframes as well which are structured very similar to the HDMI ones. This patch adds a helper function to pack the HDMI audio infoframe for DP, called hdmi_audio_infoframe_pack_for_dp(). hdmi_audio_infoframe_pack_only() is split into two parts. One of them packs the payload only and can be used for HDMI and DP. Signed-off-by: Markus Schneider-Pargmann Signed-off-by: Guillaume Ranquet --- drivers/video/hdmi.c | 83 ++++++++++++++++++++++++++++--------- include/drm/drm_dp_helper.h | 2 + include/linux/hdmi.h | 7 +++- 3 files changed, 72 insertions(+), 20 deletions(-) diff --git a/drivers/video/hdmi.c b/drivers/video/hdmi.c index 947be761dfa40..63e74d9fd210e 100644 --- a/drivers/video/hdmi.c +++ b/drivers/video/hdmi.c @@ -21,6 +21,7 @@ * DEALINGS IN THE SOFTWARE. */ +#include #include #include #include @@ -381,12 +382,34 @@ static int hdmi_audio_infoframe_check_only(const struct hdmi_audio_infoframe *fr * * Returns 0 on success or a negative error code on failure. */ -int hdmi_audio_infoframe_check(struct hdmi_audio_infoframe *frame) +int hdmi_audio_infoframe_check(const struct hdmi_audio_infoframe *frame) { return hdmi_audio_infoframe_check_only(frame); } EXPORT_SYMBOL(hdmi_audio_infoframe_check); +static void +hdmi_audio_infoframe_pack_payload(const struct hdmi_audio_infoframe *frame, + u8 *buffer) +{ + u8 channels; + + if (frame->channels >= 2) + channels = frame->channels - 1; + else + channels = 0; + + buffer[0] = ((frame->coding_type & 0xf) << 4) | (channels & 0x7); + buffer[1] = ((frame->sample_frequency & 0x7) << 2) | + (frame->sample_size & 0x3); + buffer[2] = frame->coding_type_ext & 0x1f; + buffer[3] = frame->channel_allocation; + buffer[4] = (frame->level_shift_value & 0xf) << 3; + + if (frame->downmix_inhibit) + buffer[4] |= BIT(7); +} + /** * hdmi_audio_infoframe_pack_only() - write HDMI audio infoframe to binary buffer * @frame: HDMI audio infoframe @@ -404,7 +427,6 @@ EXPORT_SYMBOL(hdmi_audio_infoframe_check); ssize_t hdmi_audio_infoframe_pack_only(const struct hdmi_audio_infoframe *frame, void *buffer, size_t size) { - unsigned char channels; u8 *ptr = buffer; size_t length; int ret; @@ -420,28 +442,13 @@ ssize_t hdmi_audio_infoframe_pack_only(const struct hdmi_audio_infoframe *frame, memset(buffer, 0, size); - if (frame->channels >= 2) - channels = frame->channels - 1; - else - channels = 0; - ptr[0] = frame->type; ptr[1] = frame->version; ptr[2] = frame->length; ptr[3] = 0; /* checksum */ - /* start infoframe payload */ - ptr += HDMI_INFOFRAME_HEADER_SIZE; - - ptr[0] = ((frame->coding_type & 0xf) << 4) | (channels & 0x7); - ptr[1] = ((frame->sample_frequency & 0x7) << 2) | - (frame->sample_size & 0x3); - ptr[2] = frame->coding_type_ext & 0x1f; - ptr[3] = frame->channel_allocation; - ptr[4] = (frame->level_shift_value & 0xf) << 3; - - if (frame->downmix_inhibit) - ptr[4] |= BIT(7); + hdmi_audio_infoframe_pack_payload(frame, + ptr + HDMI_INFOFRAME_HEADER_SIZE); hdmi_infoframe_set_checksum(buffer, length); @@ -479,6 +486,44 @@ ssize_t hdmi_audio_infoframe_pack(struct hdmi_audio_infoframe *frame, } EXPORT_SYMBOL(hdmi_audio_infoframe_pack); +/** + * hdmi_audio_infoframe_pack_for_dp - Pack a HDMI Audio infoframe for + * displayport + * + * @frame HDMI Audio infoframe + * @sdp secondary data packet for display port. This is filled with the + * appropriate data + * @dp_version Display Port version to be encoded in the header + * + * Packs a HDMI Audio Infoframe to be sent over Display Port. This function + * fills the secondary data packet to be used for Display Port. + * + * Return: Number of total written bytes or a negative errno on failure. + */ +ssize_t +hdmi_audio_infoframe_pack_for_dp(const struct hdmi_audio_infoframe *frame, + struct dp_sdp *sdp, u8 dp_version) +{ + int ret; + + ret = hdmi_audio_infoframe_check(frame); + if (ret) + return ret; + + memset(sdp->db, 0, sizeof(sdp->db)); + + // Secondary-data packet header + sdp->sdp_header.HB0 = 0; + sdp->sdp_header.HB1 = frame->type; + sdp->sdp_header.HB2 = DP_SDP_AUDIO_INFOFRAME_HB2; + sdp->sdp_header.HB3 = (dp_version & 0x3f) << 2; + + hdmi_audio_infoframe_pack_payload(frame, sdp->db); + + return frame->length + 4; +} +EXPORT_SYMBOL(hdmi_audio_infoframe_pack_for_dp); + /** * hdmi_vendor_infoframe_init() - initialize an HDMI vendor infoframe * @frame: HDMI vendor infoframe diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h index b52df4db3e8fe..d1527175716aa 100644 --- a/include/drm/drm_dp_helper.h +++ b/include/drm/drm_dp_helper.h @@ -1550,6 +1550,8 @@ int drm_dp_bw_code_to_link_rate(u8 link_bw); #define DP_SDP_VSC_EXT_CEA 0x21 /* DP 1.4 */ /* 0x80+ CEA-861 infoframe types */ +#define DP_SDP_AUDIO_INFOFRAME_HB2 0x1b + /** * struct dp_sdp_header - DP secondary data packet header * @HB0: Secondary Data Packet ID diff --git a/include/linux/hdmi.h b/include/linux/hdmi.h index c8ec982ff4984..2f4dcc8d060e3 100644 --- a/include/linux/hdmi.h +++ b/include/linux/hdmi.h @@ -336,7 +336,12 @@ ssize_t hdmi_audio_infoframe_pack(struct hdmi_audio_infoframe *frame, void *buffer, size_t size); ssize_t hdmi_audio_infoframe_pack_only(const struct hdmi_audio_infoframe *frame, void *buffer, size_t size); -int hdmi_audio_infoframe_check(struct hdmi_audio_infoframe *frame); +int hdmi_audio_infoframe_check(const struct hdmi_audio_infoframe *frame); + +struct dp_sdp; +ssize_t +hdmi_audio_infoframe_pack_for_dp(const struct hdmi_audio_infoframe *frame, + struct dp_sdp *sdp, u8 dp_version); enum hdmi_3d_structure { HDMI_3D_STRUCTURE_INVALID = -1, -- 2.32.0 From mboxrd@z Thu Jan 1 00:00:00 1970 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 447C3C433EF for ; Mon, 27 Dec 2021 09:34:07 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 9337D10E5B1; Mon, 27 Dec 2021 09:34:05 +0000 (UTC) Received: from mail-ed1-x52f.google.com (mail-ed1-x52f.google.com [IPv6:2a00:1450:4864:20::52f]) by gabe.freedesktop.org (Postfix) with ESMTPS id 21F1710E6D1 for ; Mon, 27 Dec 2021 09:34:01 +0000 (UTC) Received: by mail-ed1-x52f.google.com with SMTP id bm14so59567583edb.5 for ; Mon, 27 Dec 2021 01:34:01 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20210112.gappssmtp.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=Up09Yp1cAkGEwJVvJMibaaAPFlik/zZFWIRClXIemi8=; b=Sc1s1Htt/pYoJUtWHYVVXf8lsx8AjMP3yM5bjDGm12A2Hlm4iUHrUtGOB2MlPZQYii Fz+WFfonZDX5W9mMlheSY+PeszwXZbKi+pDB4SJl+1ekUoaTtawhUiPN320gVRpOj9BD pg/tvFs2yhhCt1p5H8vrar3vXBzKPVV1FbDXRg7B8LlU93kiU+ktDKV4fgBNJM/DNvsy 4tkYelN9qwruOC7txNCwPiUWgGTJAOGO1JgqXjv9kZg7WaDAFtUZoIlGbmGiuZZnuIAh EnIpW9Ma49zAsv4ZjM/NoEu5j0jk5pBPWnojzRg66lX1YQ96J+w/ZFf8LfREL0cb8NJy epKg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=Up09Yp1cAkGEwJVvJMibaaAPFlik/zZFWIRClXIemi8=; b=D+CdoMy2QUGn6t0I1MwI+p27KOL+oW+SkzKHqzy+vMfkJDTIYukgArMbRvortSsjQV bQ6qEPP6Wii7p2VG7PomV6z5/D1nSJMviGJfSjY2lBbmKFAjrb21vwbttJp/d0DD094Y TELruluCRMes7bcFoTb8l6g5RgTd//PADfdB1vtCpUoQQ8WAwIEbEywbBVjz8YTfB4DF 5VdiaSomX46f6vKLYm6qO9xsz2oHnqrqoL1irOFke4ryKDZ1lB62tqk0RgUfKaPcnb28 jjp6c8EV4tSG8XKA78fztECqzjlQvSzTMWXy2HLBNNt/uOw4iAC2iqANmG/kxQ7KmvUa 7zdA== X-Gm-Message-State: AOAM533mol6NLVQi0wQ+ZtzDa4xZ0X7vit9WBnEQ40945bDtED1af5Fa MAVSQZ/OkIXkb3pwMLllRhzTKw== X-Google-Smtp-Source: ABdhPJyr6GYj10UrcnLO/EuXsvTRoRAzenXzwU4phjK7PkxETU1Ce+JbcK69SLvTat82vXTnkGFX2w== X-Received: by 2002:a17:907:7f13:: with SMTP id qf19mr12952458ejc.103.1640597639584; Mon, 27 Dec 2021 01:33:59 -0800 (PST) Received: from localhost.localdomain (2a02-8440-6140-7e07-3074-96af-9642-0003.rev.sfr.net. [2a02:8440:6140:7e07:3074:96af:9642:3]) by smtp.gmail.com with ESMTPSA id qf14sm4287568ejc.18.2021.12.27.01.33.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 27 Dec 2021 01:33:59 -0800 (PST) From: Guillaume Ranquet To: Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter Subject: [PATCH v7 4/8] video/hdmi: Add audio_infoframe packing for DP Date: Mon, 27 Dec 2021 10:33:28 +0100 Message-Id: <20211227093329.5589-2-granquet@baylibre.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20211217150854.2081-1-granquet@baylibre.com> References: <20211217150854.2081-1-granquet@baylibre.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, Markus Schneider-Pargmann Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" From: Markus Schneider-Pargmann Similar to HDMI, DP uses audio infoframes as well which are structured very similar to the HDMI ones. This patch adds a helper function to pack the HDMI audio infoframe for DP, called hdmi_audio_infoframe_pack_for_dp(). hdmi_audio_infoframe_pack_only() is split into two parts. One of them packs the payload only and can be used for HDMI and DP. Signed-off-by: Markus Schneider-Pargmann Signed-off-by: Guillaume Ranquet --- drivers/video/hdmi.c | 83 ++++++++++++++++++++++++++++--------- include/drm/drm_dp_helper.h | 2 + include/linux/hdmi.h | 7 +++- 3 files changed, 72 insertions(+), 20 deletions(-) diff --git a/drivers/video/hdmi.c b/drivers/video/hdmi.c index 947be761dfa40..63e74d9fd210e 100644 --- a/drivers/video/hdmi.c +++ b/drivers/video/hdmi.c @@ -21,6 +21,7 @@ * DEALINGS IN THE SOFTWARE. */ +#include #include #include #include @@ -381,12 +382,34 @@ static int hdmi_audio_infoframe_check_only(const struct hdmi_audio_infoframe *fr * * Returns 0 on success or a negative error code on failure. */ -int hdmi_audio_infoframe_check(struct hdmi_audio_infoframe *frame) +int hdmi_audio_infoframe_check(const struct hdmi_audio_infoframe *frame) { return hdmi_audio_infoframe_check_only(frame); } EXPORT_SYMBOL(hdmi_audio_infoframe_check); +static void +hdmi_audio_infoframe_pack_payload(const struct hdmi_audio_infoframe *frame, + u8 *buffer) +{ + u8 channels; + + if (frame->channels >= 2) + channels = frame->channels - 1; + else + channels = 0; + + buffer[0] = ((frame->coding_type & 0xf) << 4) | (channels & 0x7); + buffer[1] = ((frame->sample_frequency & 0x7) << 2) | + (frame->sample_size & 0x3); + buffer[2] = frame->coding_type_ext & 0x1f; + buffer[3] = frame->channel_allocation; + buffer[4] = (frame->level_shift_value & 0xf) << 3; + + if (frame->downmix_inhibit) + buffer[4] |= BIT(7); +} + /** * hdmi_audio_infoframe_pack_only() - write HDMI audio infoframe to binary buffer * @frame: HDMI audio infoframe @@ -404,7 +427,6 @@ EXPORT_SYMBOL(hdmi_audio_infoframe_check); ssize_t hdmi_audio_infoframe_pack_only(const struct hdmi_audio_infoframe *frame, void *buffer, size_t size) { - unsigned char channels; u8 *ptr = buffer; size_t length; int ret; @@ -420,28 +442,13 @@ ssize_t hdmi_audio_infoframe_pack_only(const struct hdmi_audio_infoframe *frame, memset(buffer, 0, size); - if (frame->channels >= 2) - channels = frame->channels - 1; - else - channels = 0; - ptr[0] = frame->type; ptr[1] = frame->version; ptr[2] = frame->length; ptr[3] = 0; /* checksum */ - /* start infoframe payload */ - ptr += HDMI_INFOFRAME_HEADER_SIZE; - - ptr[0] = ((frame->coding_type & 0xf) << 4) | (channels & 0x7); - ptr[1] = ((frame->sample_frequency & 0x7) << 2) | - (frame->sample_size & 0x3); - ptr[2] = frame->coding_type_ext & 0x1f; - ptr[3] = frame->channel_allocation; - ptr[4] = (frame->level_shift_value & 0xf) << 3; - - if (frame->downmix_inhibit) - ptr[4] |= BIT(7); + hdmi_audio_infoframe_pack_payload(frame, + ptr + HDMI_INFOFRAME_HEADER_SIZE); hdmi_infoframe_set_checksum(buffer, length); @@ -479,6 +486,44 @@ ssize_t hdmi_audio_infoframe_pack(struct hdmi_audio_infoframe *frame, } EXPORT_SYMBOL(hdmi_audio_infoframe_pack); +/** + * hdmi_audio_infoframe_pack_for_dp - Pack a HDMI Audio infoframe for + * displayport + * + * @frame HDMI Audio infoframe + * @sdp secondary data packet for display port. This is filled with the + * appropriate data + * @dp_version Display Port version to be encoded in the header + * + * Packs a HDMI Audio Infoframe to be sent over Display Port. This function + * fills the secondary data packet to be used for Display Port. + * + * Return: Number of total written bytes or a negative errno on failure. + */ +ssize_t +hdmi_audio_infoframe_pack_for_dp(const struct hdmi_audio_infoframe *frame, + struct dp_sdp *sdp, u8 dp_version) +{ + int ret; + + ret = hdmi_audio_infoframe_check(frame); + if (ret) + return ret; + + memset(sdp->db, 0, sizeof(sdp->db)); + + // Secondary-data packet header + sdp->sdp_header.HB0 = 0; + sdp->sdp_header.HB1 = frame->type; + sdp->sdp_header.HB2 = DP_SDP_AUDIO_INFOFRAME_HB2; + sdp->sdp_header.HB3 = (dp_version & 0x3f) << 2; + + hdmi_audio_infoframe_pack_payload(frame, sdp->db); + + return frame->length + 4; +} +EXPORT_SYMBOL(hdmi_audio_infoframe_pack_for_dp); + /** * hdmi_vendor_infoframe_init() - initialize an HDMI vendor infoframe * @frame: HDMI vendor infoframe diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h index b52df4db3e8fe..d1527175716aa 100644 --- a/include/drm/drm_dp_helper.h +++ b/include/drm/drm_dp_helper.h @@ -1550,6 +1550,8 @@ int drm_dp_bw_code_to_link_rate(u8 link_bw); #define DP_SDP_VSC_EXT_CEA 0x21 /* DP 1.4 */ /* 0x80+ CEA-861 infoframe types */ +#define DP_SDP_AUDIO_INFOFRAME_HB2 0x1b + /** * struct dp_sdp_header - DP secondary data packet header * @HB0: Secondary Data Packet ID diff --git a/include/linux/hdmi.h b/include/linux/hdmi.h index c8ec982ff4984..2f4dcc8d060e3 100644 --- a/include/linux/hdmi.h +++ b/include/linux/hdmi.h @@ -336,7 +336,12 @@ ssize_t hdmi_audio_infoframe_pack(struct hdmi_audio_infoframe *frame, void *buffer, size_t size); ssize_t hdmi_audio_infoframe_pack_only(const struct hdmi_audio_infoframe *frame, void *buffer, size_t size); -int hdmi_audio_infoframe_check(struct hdmi_audio_infoframe *frame); +int hdmi_audio_infoframe_check(const struct hdmi_audio_infoframe *frame); + +struct dp_sdp; +ssize_t +hdmi_audio_infoframe_pack_for_dp(const struct hdmi_audio_infoframe *frame, + struct dp_sdp *sdp, u8 dp_version); enum hdmi_3d_structure { HDMI_3D_STRUCTURE_INVALID = -1, -- 2.32.0