From patchwork Sun Sep 17 17:37:24 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: John Watts X-Patchwork-Id: 13388629 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 alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (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 7A2ECCD13CF for ; Sun, 17 Sep 2023 17:39:35 +0000 (UTC) Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id B9C561E2; Sun, 17 Sep 2023 19:38:43 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz B9C561E2 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1694972373; bh=IG5qAjfPvHL3XAz4b1s4xtgJz0i0qpShD4OH3hO8YiA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-Id: List-Archive:List-Help:List-Owner:List-Post:List-Subscribe: List-Unsubscribe:From; b=kHl4Vsgp1V2prJKe3AsGTPEKv/eMDkgMuqXNThpuSJWkIYkan7ITP5IZmFUQ3792C 0Gru7Lbhb7EpPoy28fEHpi3r6oEq9VBEmiyfcfwgVGYbNu/pbghb3/lOHlfWPDuLh8 E+g4IAjl20GqDfjuLMMr3XWYsqrP9KM/JM+BUGFw= Received: by alsa1.perex.cz (Postfix, from userid 50401) id 3E6CBF8055A; Sun, 17 Sep 2023 19:37:54 +0200 (CEST) Received: from mailman-core.alsa-project.org (mailman-core.alsa-project.org [10.254.200.10]) by alsa1.perex.cz (Postfix) with ESMTP id BB842F8055C; Sun, 17 Sep 2023 19:37:53 +0200 (CEST) Received: by alsa1.perex.cz (Postfix, from userid 50401) id 09DABF801F5; Sun, 17 Sep 2023 19:37:50 +0200 (CEST) Received: from out-214.mta0.migadu.com (out-214.mta0.migadu.com [IPv6:2001:41d0:1004:224b::d6]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id ECE02F80125 for ; Sun, 17 Sep 2023 19:37:45 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz ECE02F80125 Authentication-Results: alsa1.perex.cz; dkim=pass (2048-bit key, unprotected) header.d=jookia.org header.i=@jookia.org header.a=rsa-sha256 header.s=key1 header.b=qMxNLiGg X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=jookia.org; s=key1; t=1694972264; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=qzvX1zNT0X0Pb7ZYawRW0ysAeQBR279Tmloz2NWjDB8=; b=qMxNLiGgGTdCdti8zhfkaqKth8mGdP7i+e3GuWFeV0khatQpRSdJg74+gSffSHPQXRSIBt QYyKRwvMOZ4AiHpf50+fDrMwXJUhxndEf6XPS1iqNImvgxAIdRGJGzTfUPH6iz1KGdP9Q5 Cnvmt9X8NT/aqdwyFFLlFb7AuzmJZWOfHkh9FoHZuQsLXgHmf3bMZgEsOXb9kidZQQNkHv +brOrbdY+ajdjtGtRlx49FEBPQ317PT7UuhPkWfnMLpZR2l2lbk66l52KR2GYJ9VyzFEGJ Fp3vaDWMpb5vcj3mM0y1cb6Am4hK/bSOEEEicTvqxKI1z9B//7FAvZucxSr1Zg== From: John Watts To: alsa-devel@alsa-project.org Cc: Liam Girdwood , Mark Brown , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Jaroslav Kysela , Takashi Iwai , John Watts , patches@opensource.cirrus.com, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v3 1/3] ASoC: wm8782: Constrain maximum audio rate at runtime Date: Mon, 18 Sep 2023 03:37:24 +1000 Message-ID: <20230917173726.1916439-2-contact@jookia.org> In-Reply-To: <20230917173726.1916439-1-contact@jookia.org> References: <20230917173726.1916439-1-contact@jookia.org> MIME-Version: 1.0 X-Migadu-Flow: FLOW_OUT Message-ID-Hash: NWFMKLMM5JEJUQ4VGBZBDIHHKYCPWQ57 X-Message-ID-Hash: NWFMKLMM5JEJUQ4VGBZBDIHHKYCPWQ57 X-MailFrom: contact@jookia.org X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-alsa-devel.alsa-project.org-0; header-match-alsa-devel.alsa-project.org-1; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.8 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: The wm8782 supports up to 192kHz audio when pins are set correctly. Instead of hardcoding which rates are supported constrain them at runtime based on a max_rate variable. Signed-off-by: John Watts Acked-by: Charles Keepax --- sound/soc/codecs/wm8782.c | 42 ++++++++++++++++++++++++++++----------- 1 file changed, 30 insertions(+), 12 deletions(-) diff --git a/sound/soc/codecs/wm8782.c b/sound/soc/codecs/wm8782.c index 95ff4339d103..f3dc87b92b1e 100644 --- a/sound/soc/codecs/wm8782.c +++ b/sound/soc/codecs/wm8782.c @@ -23,6 +23,27 @@ #include #include +/* regulator power supply names */ +static const char *supply_names[] = { + "Vdda", /* analog supply, 2.7V - 3.6V */ + "Vdd", /* digital supply, 2.7V - 5.5V */ +}; + +struct wm8782_priv { + struct regulator_bulk_data supplies[ARRAY_SIZE(supply_names)]; + int max_rate; +}; + +static int wm8782_dai_startup(struct snd_pcm_substream *sub, struct snd_soc_dai *dai) +{ + struct snd_pcm_runtime *runtime = sub->runtime; + struct wm8782_priv *priv = + snd_soc_component_get_drvdata(dai->component); + + return snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_RATE, + 8000, priv->max_rate); +} + static const struct snd_soc_dapm_widget wm8782_dapm_widgets[] = { SND_SOC_DAPM_INPUT("AINL"), SND_SOC_DAPM_INPUT("AINR"), @@ -33,28 +54,22 @@ static const struct snd_soc_dapm_route wm8782_dapm_routes[] = { { "Capture", NULL, "AINR" }, }; +static const struct snd_soc_dai_ops wm8782_dai_ops = { + .startup = &wm8782_dai_startup, +}; + static struct snd_soc_dai_driver wm8782_dai = { .name = "wm8782", .capture = { .stream_name = "Capture", .channels_min = 2, .channels_max = 2, - /* For configurations with FSAMPEN=0 */ - .rates = SNDRV_PCM_RATE_8000_48000, + .rates = SNDRV_PCM_RATE_8000_192000, .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE, }, -}; - -/* regulator power supply names */ -static const char *supply_names[] = { - "Vdda", /* analog supply, 2.7V - 3.6V */ - "Vdd", /* digital supply, 2.7V - 5.5V */ -}; - -struct wm8782_priv { - struct regulator_bulk_data supplies[ARRAY_SIZE(supply_names)]; + .ops = &wm8782_dai_ops, }; static int wm8782_soc_probe(struct snd_soc_component *component) @@ -121,6 +136,9 @@ static int wm8782_probe(struct platform_device *pdev) if (ret < 0) return ret; + /* For configurations with FSAMPEN=0 */ + priv->max_rate = 48000; + return devm_snd_soc_register_component(&pdev->dev, &soc_component_dev_wm8782, &wm8782_dai, 1); }