From patchwork Tue Jul 9 12:28:43 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Richard Genoud X-Patchwork-Id: 2825253 Return-Path: X-Original-To: patchwork-linux-arm@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 7170FC0AB2 for ; Tue, 9 Jul 2013 12:29:55 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 110302013C for ; Tue, 9 Jul 2013 12:29:54 +0000 (UTC) Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 5C8D720121 for ; Tue, 9 Jul 2013 12:29:52 +0000 (UTC) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1UwX38-0002fs-9x; Tue, 09 Jul 2013 12:29:42 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1UwX35-0006jb-S7; Tue, 09 Jul 2013 12:29:39 +0000 Received: from mail-we0-f179.google.com ([74.125.82.179]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1UwX32-0006i8-86 for linux-arm-kernel@lists.infradead.org; Tue, 09 Jul 2013 12:29:37 +0000 Received: by mail-we0-f179.google.com with SMTP id w59so4742283wes.10 for ; Tue, 09 Jul 2013 05:29:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id:x-mailer:in-reply-to:references :mime-version:content-type:content-transfer-encoding; bh=e+NcHdl8yQ6S7+3kYLy4s6Mv+iVIOZk7olORXH8KSjs=; b=mvuT4nUuysLV78maejir2o55EO9Ogylrh3m1hbJrVvQvNyu9hTJKQ13qToel2TlNjj 5MIWumlyqGppdrJugvBRWl3cKWbrVYZToHagfW6BruThaCHTwJ8K5Ck8O0CesfhyDMGk k7seHfRBMflt7PZGXjrLxMdYTVJa8RvEMEtMefeajH2i2N19LhBoaqkZOE6pvGNB8IvT XIt7iVJ7vzlxnIg7UEpzw3e1ma8VeJHHXb0MwX78rPRKHO8q4Cd6qZ5TOa87PfR9OzzQ hO5ST6QePr8PzXwLt4ccuvgHv6JQgbi3z/zukP9ISwQzRIzgZ/q9z4SH8UzeZJaYFCqe o5nQ== X-Received: by 10.180.198.10 with SMTP id iy10mr32177387wic.29.1373372951579; Tue, 09 Jul 2013 05:29:11 -0700 (PDT) Received: from lnx-rg.pr (lyon.paratronic.fr. [213.41.177.106]) by mx.google.com with ESMTPSA id eu1sm60850544wib.8.2013.07.09.05.29.08 for (version=TLSv1.2 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Tue, 09 Jul 2013 05:29:10 -0700 (PDT) From: Richard Genoud To: Mark Brown , Nicolas Ferre , Liam Girdwood Subject: [PATCH v3 1/7] sound: sam9x5_wm8731: machine driver for at91sam9x5 wm8731 boards Date: Tue, 9 Jul 2013 14:28:43 +0200 Message-Id: <1373372929-17800-2-git-send-email-richard.genoud@gmail.com> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1373372929-17800-1-git-send-email-richard.genoud@gmail.com> References: <1373290193-25300-1-git-send-email-richard.genoud@gmail.com> <1373372929-17800-1-git-send-email-richard.genoud@gmail.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20130709_082936_488886_8B3F338B X-CRM114-Status: GOOD ( 22.17 ) X-Spam-Score: -2.7 (--) Cc: alsa-devel@alsa-project.org, Lars-Peter Clausen , Richard Genoud , devicetree-discuss@lists.ozlabs.org, linux-kernel@vger.kernel.org, Bo Shen , =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= , linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, T_DKIM_INVALID, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Nicolas Ferre Description of the Asoc machine driver for an at91sam9x5 based board with a wm8731 audio DAC. Wm8731 is clocked by a crystal and used as a master on the SSC/I2S interface. Its connections are a headphone jack and an Line input jack. [Richard: this is based on an old patch from Nicolas that I forward ported and reworked to use only device tree] Signed-off-by: Nicolas Ferre Signed-off-by: Uwe Kleine-König Signed-off-by: Richard Genoud --- sound/soc/atmel/Kconfig | 10 ++ sound/soc/atmel/Makefile | 2 + sound/soc/atmel/sam9x5_wm8731.c | 238 +++++++++++++++++++++++++++++++++++++++ 3 files changed, 250 insertions(+) create mode 100644 sound/soc/atmel/sam9x5_wm8731.c diff --git a/sound/soc/atmel/Kconfig b/sound/soc/atmel/Kconfig index 1c0b185..9eb8c49 100644 --- a/sound/soc/atmel/Kconfig +++ b/sound/soc/atmel/Kconfig @@ -33,6 +33,16 @@ config SND_AT91_SOC_SAM9G20_WM8731 Say Y if you want to add support for SoC audio on WM8731-based AT91sam9g20 evaluation board. +config SND_AT91_SOC_SAM9X5_WM8731 + tristate "SoC Audio support for WM8731-based at91sam9x5 board" + depends on ATMEL_SSC && SND_ATMEL_SOC && SOC_AT91SAM9X5 + select SND_ATMEL_SOC_SSC + select SND_ATMEL_SOC_DMA + select SND_SOC_WM8731 + help + Say Y if you want to add support for audio SoC on an + at91sam9x5 based board that is using WM8731 codec. + config SND_AT91_SOC_AFEB9260 tristate "SoC Audio support for AFEB9260 board" depends on ARCH_AT91 && ATMEL_SSC && ARCH_AT91 && MACH_AFEB9260 && SND_ATMEL_SOC diff --git a/sound/soc/atmel/Makefile b/sound/soc/atmel/Makefile index 41967cc..7784c09 100644 --- a/sound/soc/atmel/Makefile +++ b/sound/soc/atmel/Makefile @@ -11,6 +11,8 @@ obj-$(CONFIG_SND_ATMEL_SOC_SSC) += snd-soc-atmel_ssc_dai.o # AT91 Machine Support snd-soc-sam9g20-wm8731-objs := sam9g20_wm8731.o +snd-soc-sam9x5-wm8731-objs := sam9x5_wm8731.o obj-$(CONFIG_SND_AT91_SOC_SAM9G20_WM8731) += snd-soc-sam9g20-wm8731.o +obj-$(CONFIG_SND_AT91_SOC_SAM9X5_WM8731) += snd-soc-sam9x5-wm8731.o obj-$(CONFIG_SND_AT91_SOC_AFEB9260) += snd-soc-afeb9260.o diff --git a/sound/soc/atmel/sam9x5_wm8731.c b/sound/soc/atmel/sam9x5_wm8731.c new file mode 100644 index 0000000..c56e36b --- /dev/null +++ b/sound/soc/atmel/sam9x5_wm8731.c @@ -0,0 +1,238 @@ +/* + * sam9x5_wm8731 -- SoC audio for AT91SAM9X5-based boards + * that are using WM8731 as codec. + * + * Copyright (C) 2011 Atmel, + * Nicolas Ferre + * + * Copyright (C) 2013 Paratronic, + * Richard Genoud + * + * Based on sam9g20_wm8731.c by: + * Sedji Gaouaou + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +#include +#include +#include +#include + +#include +#include +#include + +#include "../codecs/wm8731.h" +#include "atmel-pcm.h" +#include "atmel_ssc_dai.h" + +#define MCLK_RATE 12288000 + +#define DRV_NAME "sam9x5-snd-wm8731" + +/* + * Authorized rates are: + * Rate = MCLK_RATE / (n * 2) + * Where n is in [1..4095] + * (cf register SSC_CMR) + */ +static unsigned int rates[] = { + 8000, + 16000, + 32000, + 48000, + 64000, + 96000, +}; + +static struct snd_pcm_hw_constraint_list hw_rates = { + .count = ARRAY_SIZE(rates), + .list = rates, +}; + +/* + * Logic for a wm8731 as connected on a at91sam9x5 based board. + */ +static int at91sam9x5ek_wm8731_init(struct snd_soc_pcm_runtime *rtd) +{ + struct snd_soc_dai *codec_dai = rtd->codec_dai; + struct device *dev = rtd->dev; + int ret; + + dev_dbg(dev, "ASoC: %s called\n", __func__); + + /* set the codec system clock for DAC and ADC */ + ret = snd_soc_dai_set_sysclk(codec_dai, WM8731_SYSCLK_XTAL, + MCLK_RATE, SND_SOC_CLOCK_IN); + if (ret < 0) { + dev_err(dev, "ASoC: Failed to set WM8731 SYSCLK: %d\n", ret); + return ret; + } + + return 0; +} + +static int sam9x5ek_wm8731_startup(struct snd_pcm_substream *substream) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + + runtime->hw.rate_min = hw_rates.list[0]; + runtime->hw.rate_max = hw_rates.list[hw_rates.count - 1]; + runtime->hw.rates = SNDRV_PCM_RATE_KNOT; + + return snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, + &hw_rates); +} + +/* + * Audio paths on at91sam9x5ek board: + * + * |A| ------------> | | ---R----> Headphone Jack + * |T| <----\ | WM | ---L--/ + * |9| ---> CLK <--> | 8731 | <--R----- Line In Jack + * |1| <------------ | | <--L--/ + */ +static const struct snd_soc_dapm_widget at91sam9x5ek_dapm_widgets[] = { + SND_SOC_DAPM_HP("Headphone Jack", NULL), + SND_SOC_DAPM_LINE("Line In Jack", NULL), +}; + +static struct snd_soc_ops sam9x5ek_wm8731_ops = { + .startup = sam9x5ek_wm8731_startup, +}; + +static struct snd_soc_dai_link at91sam9x5ek_dai = { + .name = "WM8731", + .stream_name = "WM8731 PCM", + .codec_dai_name = "wm8731-hifi", + .init = at91sam9x5ek_wm8731_init, + .ops = &sam9x5ek_wm8731_ops, +}; + +static struct snd_soc_card snd_soc_at91sam9x5ek = { + .owner = THIS_MODULE, + .dai_link = &at91sam9x5ek_dai, + .num_links = 1, + .dapm_widgets = at91sam9x5ek_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(at91sam9x5ek_dapm_widgets), +}; + +static int sam9x5_wm8731_driver_probe(struct platform_device *pdev) +{ + struct device_node *np = pdev->dev.of_node; + struct device_node *codec_np, *cpu_np; + int ret; + + if (!np) { + dev_err(&pdev->dev, "No device node supplied\n"); + return -EINVAL; + } + + ret = atmel_ssc_set_audio(0); + if (ret != 0) { + dev_err(&pdev->dev, + "ASoC: Failed to set SSC 0 for audio: %d\n", ret); + return ret; + } + + snd_soc_at91sam9x5ek.dev = &pdev->dev; + + ret = snd_soc_of_parse_card_name(&snd_soc_at91sam9x5ek, "atmel,model"); + if (ret) + goto out; + + ret = snd_soc_of_parse_audio_routing(&snd_soc_at91sam9x5ek, + "atmel,audio-routing"); + if (ret) + goto out; + + codec_np = of_parse_phandle(np, "atmel,audio-codec", 0); + if (!codec_np) { + dev_err(&pdev->dev, "codec info missing\n"); + ret = -EINVAL; + goto out; + } + + at91sam9x5ek_dai.codec_of_node = codec_np; + + cpu_np = of_parse_phandle(np, "atmel,ssc-controller", 0); + if (!cpu_np) { + dev_err(&pdev->dev, "ssc controller node missing\n"); + ret = -EINVAL; + goto out; + } + at91sam9x5ek_dai.cpu_of_node = cpu_np; + at91sam9x5ek_dai.platform_of_node = cpu_np; + + of_node_put(codec_np); + of_node_put(cpu_np); + + at91sam9x5ek_dai.dai_fmt = snd_soc_of_parse_daifmt(np, "atmel,"); + + ret = snd_soc_register_card(&snd_soc_at91sam9x5ek); + if (ret) { + dev_err(&pdev->dev, + "ASoC: Platform device allocation failed\n"); + goto out; + } + + platform_set_drvdata(pdev, &snd_soc_at91sam9x5ek); + + dev_dbg(&pdev->dev, "ASoC: %s ok\n", __func__); + + return ret; + +out: + atmel_ssc_put_audio(0); + return ret; +} + +static int sam9x5_wm8731_driver_remove(struct platform_device *pdev) +{ + struct snd_soc_card *card = platform_get_drvdata(pdev); + + snd_soc_unregister_card(card); + atmel_ssc_put_audio(0); + + return 0; +} + +static const struct of_device_id sam9x5_wm8731_of_match[] = { + { .compatible = "atmel,sam9x5-wm8731-audio", }, + {}, +}; +MODULE_DEVICE_TABLE(of, sam9x5_wm8731_of_match); + +static struct platform_driver sam9x5_wm8731_driver = { + .driver = { + .name = DRV_NAME, + .owner = THIS_MODULE, + .of_match_table = of_match_ptr(sam9x5_wm8731_of_match), + }, + .probe = sam9x5_wm8731_driver_probe, + .remove = sam9x5_wm8731_driver_remove, +}; +module_platform_driver(sam9x5_wm8731_driver); + +/* Module information */ +MODULE_AUTHOR("Nicolas Ferre "); +MODULE_AUTHOR("Richard Genoud "); +MODULE_DESCRIPTION("ALSA SoC machine driver for AT91SAM9x5 - WM8731"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:" DRV_NAME);