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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 C05F4C369AB for ; Thu, 24 Apr 2025 11:41:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=+dIyzL01cgo+crKLDEZdPmeuX1TlRguSNO13pBQrU7o=; b=2TgCrgFqm7OCxpw9GCoI+Ueilh jHbokYf60mdTuNXubg5TcRiMbOWDvfx0zNOHjxj0z6h2sUGqS7h6Yl2hAglnYKzSzvmXiUH1quBU6 fwbP8MZECo6HDgcVWmLkwtKPkPnO2yYUlil5MIzleGS2XvygqARBD7NeYYlki9R9nk5l+X8m+LGsd UMGTY5qblrkdQrzdsEjI3dHSKR1l6adyGco/ysgppCMhGAnxpqSxtiLCPXExk07+PfYW32nMvgzmD jyPIvLCzcYIjX4g8qOwwEVP1pQcaDJYOt/bJVBCB2Z654e978thGpjmxYJQqV83/6JLmeGQw+TAkC BrQEV7Cw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1u7uxo-0000000Du0S-29l6; Thu, 24 Apr 2025 11:41:56 +0000 Received: from mail-pl1-x62c.google.com ([2607:f8b0:4864:20::62c]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1u7tm0-0000000DfUA-1UnP for linux-mediatek@lists.infradead.org; Thu, 24 Apr 2025 10:25:42 +0000 Received: by mail-pl1-x62c.google.com with SMTP id d9443c01a7336-224341bbc1dso9311175ad.3 for ; Thu, 24 Apr 2025 03:25:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1745490339; x=1746095139; darn=lists.infradead.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=+dIyzL01cgo+crKLDEZdPmeuX1TlRguSNO13pBQrU7o=; b=B1qeHAVByBPSjlFmQWGnr8nk+RAW+hIvNgdhjebKPlOSUYRGr/7YjDXWPPBuPrW4Ej GpjlNDloFVjRKskdXOZ3hlVqeblBVHN5T2Iz4UAGOgE/jNXpJkY9ruk+9bA9hTqG0lM9 PErB5yHqSc88IaJwkhucaRwXZ8OX8SVaiERag= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1745490339; x=1746095139; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=+dIyzL01cgo+crKLDEZdPmeuX1TlRguSNO13pBQrU7o=; b=G19LQwf95PF1lqZTUF4rOjSSw3qTqxdgvq2pmKzDPeRM4VzGYSe+hCgM83400Eke2K OJUpbj/Iff4nVFsiQ3d0e1VvQdZUqu5c4iRXbHVQunt2hNIHMgn5+clcsdQFZBYbBSfF 4VdEfAuD2wYyn05RfkYWo/sJ6hlwWME5l54QHq+5x3jKHL4s3jj8SUozNVmUx0OZwg7z s7AL8zDA0WvEQOEQPQ8vAGP50tGqycy8zPn1601SKspu8ZnFMrGj6sUBL4Pe3SLTSpiq KN1qENpbBrqqNrd6fDSVtBLHRPvqjxVHk1blVaHe2c/VtI/anXjnTGJ3fklnMB4EW4Ns W5Jw== X-Forwarded-Encrypted: i=1; AJvYcCXpTg+k9+KtDMSW531liJpY5A1UBRKpyZrijHICxvt6xY64dUnLAcr0xEvAe8wo4qj/SQah1om50EKJWCyzKg==@lists.infradead.org X-Gm-Message-State: AOJu0YznR9lklFAixO6Avu3j7ODIAz2i9eXh4lKLB9Vy/8C6XpeKsgXR WD8q7a+lu3hX5uBEy55/T7OlKorpmOBba2U9DkZ7I9kTB+sHmYlTxrDwgSBQfg== X-Gm-Gg: ASbGncv36Zgmoe+hd/NAHeDOmQXfflWxUILST2LwXoDUYjblhnrgAdbse6D0R8eq7+j RgNzJTnl1mUg8B0H/quocGRxK1yUHRQX/OR6v+Mn9F2WnK54FXZ394U4+nLCZy0vpEObQLud5In XqM2ssMH4h9AHtx4KaQDfuomUbV7NfkhNWaM++2gKGlMRGQyfV5E8oaN7BHfdavlQ9XIoav2b+2 BBxpJ914EcmuhFqwFJoDcZ6mLCsoUVGxn/13hlXh4tMX7ZtOKEYCuEKvhD3ytUAqNHRYU3IDJYD VU0BNYmYaBAIgPDCHb7g3qLSVz7VeEiJy+d9APhH/XTsAljHUvgLxKc/gA== X-Google-Smtp-Source: AGHT+IGDFNqCsjcE5GSWvAg3se5R8IwE/tOMMO7jOQeDrhg6ysHM8d1FMTBh96EPdCO+C4822gNnlw== X-Received: by 2002:a17:902:cacc:b0:220:ff3f:6cc0 with SMTP id d9443c01a7336-22db3d777dbmr28370545ad.38.1745490339232; Thu, 24 Apr 2025 03:25:39 -0700 (PDT) Received: from wenstp920.tpe.corp.google.com ([2401:fa00:1:10:fa13:e633:684b:257]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-22db4dda40fsm9680305ad.104.2025.04.24.03.25.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 24 Apr 2025 03:25:38 -0700 (PDT) From: Chen-Yu Tsai To: Liam Girdwood , Mark Brown , Matthias Brugger , AngeloGioacchino Del Regno , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: Chen-Yu Tsai , Jaroslav Kysela , Takashi Iwai , Jiaxin Yu , linux-sound@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 06/13] ASoC: mediatek: use reserved memory or enable buffer pre-allocation Date: Thu, 24 Apr 2025 18:25:00 +0800 Message-ID: <20250424102509.1083185-7-wenst@chromium.org> X-Mailer: git-send-email 2.49.0.805.g082f7c87e0-goog In-Reply-To: <20250424102509.1083185-1-wenst@chromium.org> References: <20250424102509.1083185-1-wenst@chromium.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250424_032540_451971_564EBD73 X-CRM114-Status: GOOD ( 18.04 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org In commit 32c9c06adb5b ("ASoC: mediatek: disable buffer pre-allocation") buffer pre-allocation was disabled to accommodate newer platforms that have a limited reserved memory region for the audio frontend. Turns out disabling pre-allocation across the board impacts platforms that don't have this reserved memory region. Buffer allocation failures have been observed on MT8173 and MT8183 based Chromebooks under low memory conditions, which results in no audio playback for the user. Since some MediaTek platforms already have dedicated reserved memory pools for the audio frontend, the plan is to enable this for all of them. This requires device tree changes. As a fallback, reinstate the original policy of pre-allocating audio buffers at probe time of the reserved memory pool cannot be found or used. This patch covers the MT8173, MT8183, MT8186 and MT8192 platforms for now, the reason being that existing MediaTek platform drivers that supported reserved memory were all platforms that mainly supported ChromeOS, and is also the set of devices that I can verify. Fixes: 32c9c06adb5b ("ASoC: mediatek: disable buffer pre-allocation") Signed-off-by: Chen-Yu Tsai --- sound/soc/mediatek/common/mtk-afe-platform-driver.c | 4 +++- sound/soc/mediatek/common/mtk-base-afe.h | 1 + sound/soc/mediatek/mt8173/mt8173-afe-pcm.c | 7 +++++++ sound/soc/mediatek/mt8183/mt8183-afe-pcm.c | 7 +++++++ sound/soc/mediatek/mt8186/mt8186-afe-pcm.c | 7 +++++++ sound/soc/mediatek/mt8192/mt8192-afe-pcm.c | 7 +++++++ 6 files changed, 32 insertions(+), 1 deletion(-) diff --git a/sound/soc/mediatek/common/mtk-afe-platform-driver.c b/sound/soc/mediatek/common/mtk-afe-platform-driver.c index 6b6330583941..70fd05d5ff48 100644 --- a/sound/soc/mediatek/common/mtk-afe-platform-driver.c +++ b/sound/soc/mediatek/common/mtk-afe-platform-driver.c @@ -120,7 +120,9 @@ int mtk_afe_pcm_new(struct snd_soc_component *component, struct mtk_base_afe *afe = snd_soc_component_get_drvdata(component); size = afe->mtk_afe_hardware->buffer_bytes_max; - snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV, afe->dev, 0, size); + snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV, afe->dev, + afe->preallocate_buffers ? size : 0, + size); return 0; } diff --git a/sound/soc/mediatek/common/mtk-base-afe.h b/sound/soc/mediatek/common/mtk-base-afe.h index f51578b6c50a..a406f2e3e7a8 100644 --- a/sound/soc/mediatek/common/mtk-base-afe.h +++ b/sound/soc/mediatek/common/mtk-base-afe.h @@ -117,6 +117,7 @@ struct mtk_base_afe { struct mtk_base_afe_irq *irqs; int irqs_size; int memif_32bit_supported; + bool preallocate_buffers; struct list_head sub_dais; struct snd_soc_dai_driver *dai_drivers; diff --git a/sound/soc/mediatek/mt8173/mt8173-afe-pcm.c b/sound/soc/mediatek/mt8173/mt8173-afe-pcm.c index 04ed0cfec174..f93d6348fdf8 100644 --- a/sound/soc/mediatek/mt8173/mt8173-afe-pcm.c +++ b/sound/soc/mediatek/mt8173/mt8173-afe-pcm.c @@ -13,6 +13,7 @@ #include #include #include +#include #include #include #include @@ -1070,6 +1071,12 @@ static int mt8173_afe_pcm_dev_probe(struct platform_device *pdev) afe->dev = &pdev->dev; + ret = of_reserved_mem_device_init(&pdev->dev); + if (ret) { + dev_info(&pdev->dev, "no reserved memory found, pre-allocating buffers instead\n"); + afe->preallocate_buffers = true; + } + irq_id = platform_get_irq(pdev, 0); if (irq_id <= 0) return irq_id < 0 ? irq_id : -ENXIO; diff --git a/sound/soc/mediatek/mt8183/mt8183-afe-pcm.c b/sound/soc/mediatek/mt8183/mt8183-afe-pcm.c index d083b4bf0f95..e7378bee8e50 100644 --- a/sound/soc/mediatek/mt8183/mt8183-afe-pcm.c +++ b/sound/soc/mediatek/mt8183/mt8183-afe-pcm.c @@ -10,6 +10,7 @@ #include #include #include +#include #include #include @@ -1094,6 +1095,12 @@ static int mt8183_afe_pcm_dev_probe(struct platform_device *pdev) afe->dev = &pdev->dev; dev = afe->dev; + ret = of_reserved_mem_device_init(dev); + if (ret) { + dev_info(dev, "no reserved memory found, pre-allocating buffers instead\n"); + afe->preallocate_buffers = true; + } + /* initial audio related clock */ ret = mt8183_init_clock(afe); if (ret) { diff --git a/sound/soc/mediatek/mt8186/mt8186-afe-pcm.c b/sound/soc/mediatek/mt8186/mt8186-afe-pcm.c index db7c93401bee..c73b4664e53e 100644 --- a/sound/soc/mediatek/mt8186/mt8186-afe-pcm.c +++ b/sound/soc/mediatek/mt8186/mt8186-afe-pcm.c @@ -10,6 +10,7 @@ #include #include #include +#include #include #include #include @@ -2835,6 +2836,12 @@ static int mt8186_afe_pcm_dev_probe(struct platform_device *pdev) afe_priv = afe->platform_priv; afe->dev = &pdev->dev; + ret = of_reserved_mem_device_init(dev); + if (ret) { + dev_info(dev, "no reserved memory found, pre-allocating buffers instead\n"); + afe->preallocate_buffers = true; + } + afe->base_addr = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(afe->base_addr)) return PTR_ERR(afe->base_addr); diff --git a/sound/soc/mediatek/mt8192/mt8192-afe-pcm.c b/sound/soc/mediatek/mt8192/mt8192-afe-pcm.c index fd6af74d7995..3d32fe46118e 100644 --- a/sound/soc/mediatek/mt8192/mt8192-afe-pcm.c +++ b/sound/soc/mediatek/mt8192/mt8192-afe-pcm.c @@ -12,6 +12,7 @@ #include #include #include +#include #include #include #include @@ -2179,6 +2180,12 @@ static int mt8192_afe_pcm_dev_probe(struct platform_device *pdev) afe->dev = dev; + ret = of_reserved_mem_device_init(dev); + if (ret) { + dev_info(dev, "no reserved memory found, pre-allocating buffers instead\n"); + afe->preallocate_buffers = true; + } + /* init audio related clock */ ret = mt8192_init_clock(afe); if (ret) { -- 2.49.0.805.g082f7c87e0-goog