From patchwork Thu Aug 28 07:01:06 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Simon Horman X-Patchwork-Id: 4795331 Return-Path: X-Original-To: patchwork-ltsi-dev@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 8F077C0338 for ; Thu, 28 Aug 2014 07:41:38 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 7209220122 for ; Thu, 28 Aug 2014 07:41:36 +0000 (UTC) Received: from mail.linuxfoundation.org (mail.linuxfoundation.org [140.211.169.12]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 5A4BF2011D for ; Thu, 28 Aug 2014 07:41:35 +0000 (UTC) Received: from mail.linux-foundation.org (localhost [127.0.0.1]) by mail.linuxfoundation.org (Postfix) with ESMTP id 876D1CD9; Thu, 28 Aug 2014 07:27:20 +0000 (UTC) X-Original-To: ltsi-dev@lists.linuxfoundation.org Delivered-To: ltsi-dev@mail.linuxfoundation.org Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id BA796C8B for ; Thu, 28 Aug 2014 07:27:15 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from kirsty.vergenet.net (kirsty.vergenet.net [202.4.237.240]) by smtp1.linuxfoundation.org (Postfix) with ESMTP id 903432022E for ; Thu, 28 Aug 2014 07:27:14 +0000 (UTC) Received: from ayumi.isobedori.kobe.vergenet.net (p4222-ipbfp1605kobeminato.hyogo.ocn.ne.jp [114.154.95.222]) by kirsty.vergenet.net (Postfix) with ESMTP id 7A853267361; Thu, 28 Aug 2014 17:08:40 +1000 (EST) Received: by ayumi.isobedori.kobe.vergenet.net (Postfix, from userid 7100) id 09E43EDE5ED; Thu, 28 Aug 2014 16:08:38 +0900 (JST) From: Simon Horman To: ltsi-dev@lists.linuxfoundation.org Date: Thu, 28 Aug 2014 16:01:06 +0900 Message-Id: <1409209620-24487-541-git-send-email-horms+renesas@verge.net.au> X-Mailer: git-send-email 2.0.1 In-Reply-To: <1409209620-24487-1-git-send-email-horms+renesas@verge.net.au> References: <1409209620-24487-1-git-send-email-horms+renesas@verge.net.au> X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org Cc: Magnus Damm Subject: [LTSI-dev] [PATCH LTSI-3.14 540/894] ASoC: simple-card: Handle many DAI links X-BeenThere: ltsi-dev@lists.linuxfoundation.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: "A list to discuss patches, development, and other things related to the LTSI project" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: ltsi-dev-bounces@lists.linuxfoundation.org Errors-To: ltsi-dev-bounces@lists.linuxfoundation.org X-Virus-Scanned: ClamAV using ClamSMTP From: Jean-Francois Moine Some simple audio cards may have many DAI links. This patch extends the simple-card driver for handling such cards. Signed-off-by: Jean-Francois Moine Signed-off-by: Mark Brown (cherry picked from commit 6a91a17bd7b92b2d2aa9ece85457f52a62fd7708) Signed-off-by: Simon Horman --- sound/soc/generic/simple-card.c | 190 +++++++++++++++++++++++++--------------- 1 file changed, 121 insertions(+), 69 deletions(-) diff --git a/sound/soc/generic/simple-card.c b/sound/soc/generic/simple-card.c index 1e865c5..21f1ccb 100644 --- a/sound/soc/generic/simple-card.c +++ b/sound/soc/generic/simple-card.c @@ -70,13 +70,16 @@ static int asoc_simple_card_dai_init(struct snd_soc_pcm_runtime *rtd) snd_soc_card_get_drvdata(rtd->card); struct snd_soc_dai *codec = rtd->codec_dai; struct snd_soc_dai *cpu = rtd->cpu_dai; - int ret; + struct simple_dai_props *dai_props; + int num, ret; - ret = __asoc_simple_card_dai_init(codec, &priv->dai_props->codec_dai); + num = rtd - rtd->card->rtd; + dai_props = &priv->dai_props[num]; + ret = __asoc_simple_card_dai_init(codec, &dai_props->codec_dai); if (ret < 0) return ret; - ret = __asoc_simple_card_dai_init(cpu, &priv->dai_props->cpu_dai); + ret = __asoc_simple_card_dai_init(cpu, &dai_props->cpu_dai); if (ret < 0) return ret; @@ -148,13 +151,47 @@ asoc_simple_card_sub_parse_of(struct device_node *np, return 0; } +static int simple_card_cpu_codec_of(struct device_node *node, + int daifmt, + struct snd_soc_dai_link *dai_link, + struct simple_dai_props *dai_props) +{ + struct device_node *np; + int ret; + + /* CPU sub-node */ + ret = -EINVAL; + np = of_get_child_by_name(node, "simple-audio-card,cpu"); + if (np) { + ret = asoc_simple_card_sub_parse_of(np, daifmt, + &dai_props->cpu_dai, + &dai_link->cpu_of_node, + &dai_link->cpu_dai_name); + of_node_put(np); + } + if (ret < 0) + return ret; + + /* CODEC sub-node */ + ret = -EINVAL; + np = of_get_child_by_name(node, "simple-audio-card,codec"); + if (np) { + ret = asoc_simple_card_sub_parse_of(np, daifmt, + &dai_props->codec_dai, + &dai_link->codec_of_node, + &dai_link->codec_dai_name); + of_node_put(np); + } + return ret; +} + static int asoc_simple_card_parse_of(struct device_node *node, struct simple_card_data *priv, - struct device *dev) + struct device *dev, + int multi) { struct snd_soc_dai_link *dai_link = priv->snd_card.dai_link; - struct asoc_simple_dai *codec_dai = &priv->dai_props->codec_dai; - struct asoc_simple_dai *cpu_dai = &priv->dai_props->cpu_dai; + struct simple_dai_props *dai_props = priv->dai_props; struct device_node *np; char *name; unsigned int daifmt; @@ -183,78 +220,71 @@ static int asoc_simple_card_parse_of(struct device_node *node, return ret; } - /* CPU sub-node */ - ret = -EINVAL; - np = of_get_child_by_name(node, "simple-audio-card,cpu"); - if (np) { - ret = asoc_simple_card_sub_parse_of(np, daifmt, - cpu_dai, - &dai_link->cpu_of_node, - &dai_link->cpu_dai_name); - of_node_put(np); - } - if (ret < 0) - return ret; + /* loop on the DAI links */ + np = NULL; + for (;;) { + if (multi) { + np = of_get_next_child(node, np); + if (!np) + break; + } - /* CODEC sub-node */ - ret = -EINVAL; - np = of_get_child_by_name(node, "simple-audio-card,codec"); - if (np) { - ret = asoc_simple_card_sub_parse_of(np, daifmt, - codec_dai, - &dai_link->codec_of_node, - &dai_link->codec_dai_name); - of_node_put(np); - } - if (ret < 0) - return ret; + ret = simple_card_cpu_codec_of(multi ? np : node, + daifmt, dai_link, dai_props); + if (ret < 0) + goto err; - /* - * overwrite cpu_dai->fmt as its DAIFMT_MASTER bit is based on CODEC - * while the other bits should be identical unless buggy SW/HW design. - */ - cpu_dai->fmt = codec_dai->fmt; + /* + * overwrite cpu_dai->fmt as its DAIFMT_MASTER bit is based on CODEC + * while the other bits should be identical unless buggy SW/HW design. + */ + dai_props->cpu_dai.fmt = dai_props->codec_dai.fmt; + + if (!dai_link->cpu_dai_name || !dai_link->codec_dai_name) { + ret = -EINVAL; + goto err; + } + + /* simple-card assumes platform == cpu */ + dai_link->platform_of_node = dai_link->cpu_of_node; - if (!dai_link->cpu_dai_name || !dai_link->codec_dai_name) - return -EINVAL; + name = devm_kzalloc(dev, + strlen(dai_link->cpu_dai_name) + + strlen(dai_link->codec_dai_name) + 2, + GFP_KERNEL); + sprintf(name, "%s-%s", dai_link->cpu_dai_name, + dai_link->codec_dai_name); + dai_link->name = dai_link->stream_name = name; + + if (!multi) + break; + + dai_link++; + dai_props++; + } /* card name is created from CPU/CODEC dai name */ - name = devm_kzalloc(dev, - strlen(dai_link->cpu_dai_name) + - strlen(dai_link->codec_dai_name) + 2, - GFP_KERNEL); - sprintf(name, "%s-%s", dai_link->cpu_dai_name, - dai_link->codec_dai_name); + dai_link = priv->snd_card.dai_link; if (!priv->snd_card.name) - priv->snd_card.name = name; - dai_link->name = dai_link->stream_name = name; - - /* simple-card assumes platform == cpu */ - dai_link->platform_of_node = dai_link->cpu_of_node; + priv->snd_card.name = dai_link->name; - dev_dbg(dev, "card-name : %s\n", name); + dev_dbg(dev, "card-name : %s\n", priv->snd_card.name); dev_dbg(dev, "platform : %04x\n", daifmt); + dai_props = priv->dai_props; dev_dbg(dev, "cpu : %s / %04x / %d\n", dai_link->cpu_dai_name, - cpu_dai->fmt, - cpu_dai->sysclk); + dai_props->cpu_dai.fmt, + dai_props->cpu_dai.sysclk); dev_dbg(dev, "codec : %s / %04x / %d\n", dai_link->codec_dai_name, - codec_dai->fmt, - codec_dai->sysclk); - - /* - * soc_bind_dai_link() will check cpu name - * after of_node matching if dai_link has cpu_dai_name. - * but, it will never match if name was created by fmt_single_name() - * remove cpu_dai_name to escape name matching. - * see - * fmt_single_name() - * fmt_multiple_name() - */ - dai_link->cpu_dai_name = NULL; + dai_props->codec_dai.fmt, + dai_props->codec_dai.sysclk); return 0; + +err: + of_node_put(np); + return ret; } /* update the reference count of the devices nodes at end of probe */ @@ -284,11 +314,20 @@ static int asoc_simple_card_probe(struct platform_device *pdev) struct snd_soc_dai_link *dai_link; struct device_node *np = pdev->dev.of_node; struct device *dev = &pdev->dev; - int ret; + int num_links, multi, ret; + + /* get the number of DAI links */ + if (np && of_get_child_by_name(np, "simple-audio-card,dai-link")) { + num_links = of_get_child_count(np); + multi = 1; + } else { + num_links = 1; + multi = 0; + } /* allocate the private data and the DAI link array */ priv = devm_kzalloc(dev, - sizeof(*priv) + sizeof(*dai_link), + sizeof(*priv) + sizeof(*dai_link) * num_links, GFP_KERNEL); if (!priv) return -ENOMEM; @@ -300,23 +339,36 @@ static int asoc_simple_card_probe(struct platform_device *pdev) priv->snd_card.dev = dev; dai_link = priv->dai_link; priv->snd_card.dai_link = dai_link; - priv->snd_card.num_links = 1; + priv->snd_card.num_links = num_links; /* get room for the other properties */ priv->dai_props = devm_kzalloc(dev, - sizeof(*priv->dai_props), + sizeof(*priv->dai_props) * num_links, GFP_KERNEL); if (!priv->dai_props) return -ENOMEM; if (np && of_device_is_available(np)) { - ret = asoc_simple_card_parse_of(np, priv, dev); + ret = asoc_simple_card_parse_of(np, priv, dev, multi); if (ret < 0) { if (ret != -EPROBE_DEFER) dev_err(dev, "parse error %d\n", ret); goto err; } + + /* + * soc_bind_dai_link() will check cpu name + * after of_node matching if dai_link has cpu_dai_name. + * but, it will never match if name was created by fmt_single_name() + * remove cpu_dai_name to escape name matching. + * see + * fmt_single_name() + * fmt_multiple_name() + */ + if (num_links == 1) + dai_link->cpu_dai_name = NULL; + } else { struct asoc_simple_card_info *cinfo;