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linux/sound/soc/atmel/sam9g20_wm8731.c

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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* sam9g20_wm8731 -- SoC audio for AT91SAM9G20-based
* ATMEL AT91SAM9G20ek board.
*
* Copyright (C) 2005 SAN People
* Copyright (C) 2008 Atmel
*
* Authors: Sedji Gaouaou <sedji.gaouaou@atmel.com>
*
* Based on ati_b1_wm8731.c by:
* Frank Mandarino <fmandarino@endrelia.com>
* Copyright 2006 Endrelia Technologies Inc.
* Based on corgi.c by:
* Copyright 2005 Wolfson Microelectronics PLC.
* Copyright 2005 Openedhand Ltd.
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/kernel.h>
#include <linux/clk.h>
#include <linux/timer.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/of.h>
#include <linux/atmel-ssc.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include "../codecs/wm8731.h"
#include "atmel-pcm.h"
#include "atmel_ssc_dai.h"
#define MCLK_RATE 12000000
/*
* As shipped the board does not have inputs. However, it is relatively
* straightforward to modify the board to hook them up so support is left
* in the driver.
*/
#undef ENABLE_MIC_INPUT
static const struct snd_soc_dapm_widget at91sam9g20ek_dapm_widgets[] = {
SND_SOC_DAPM_MIC("Int Mic", NULL),
SND_SOC_DAPM_SPK("Ext Spk", NULL),
};
static const struct snd_soc_dapm_route intercon[] = {
/* speaker connected to LHPOUT/RHPOUT */
{"Ext Spk", NULL, "LHPOUT"},
{"Ext Spk", NULL, "RHPOUT"},
/* mic is connected to Mic Jack, with WM8731 Mic Bias */
{"MICIN", NULL, "Mic Bias"},
{"Mic Bias", NULL, "Int Mic"},
};
/*
* Logic for a wm8731 as connected on a at91sam9g20ek board.
*/
ASoC: multi-component - ASoC Multi-Component Support This patch extends the ASoC API to allow sound cards to have more than one CODEC and more than one platform DMA controller. This is achieved by dividing some current ASoC structures that contain both driver data and device data into structures that only either contain device data or driver data. i.e. struct snd_soc_codec ---> struct snd_soc_codec (device data) +-> struct snd_soc_codec_driver (driver data) struct snd_soc_platform ---> struct snd_soc_platform (device data) +-> struct snd_soc_platform_driver (driver data) struct snd_soc_dai ---> struct snd_soc_dai (device data) +-> struct snd_soc_dai_driver (driver data) struct snd_soc_device ---> deleted This now allows ASoC to be more tightly aligned with the Linux driver model and also means that every ASoC codec, platform and (platform) DAI is a kernel device. ASoC component private data is now stored as device private data. The ASoC sound card struct snd_soc_card has also been updated to store lists of it's components rather than a pointer to a codec and platform. The PCM runtime struct soc_pcm_runtime now has pointers to all its components. This patch adds DAPM support for ASoC multi-component and removes struct snd_soc_socdev from DAPM core. All DAPM calls are now made on a card, codec or runtime PCM level basis rather than using snd_soc_socdev. Other notable multi-component changes:- * Stream operations now de-reference less structures. * close_delayed work() now runs on a DAI basis rather than looping all DAIs in a card. * PM suspend()/resume() operations can now handle N CODECs and Platforms per sound card. * Added soc_bind_dai_link() to bind the component devices to the sound card. * Added soc_dai_link_probe() and soc_dai_link_remove() to probe and remove DAI link components. * sysfs entries can now be registered per component per card. * snd_soc_new_pcms() functionailty rolled into dai_link_probe(). * snd_soc_register_codec() now does all the codec list and mutex init. This patch changes the probe() and remove() of the CODEC drivers as follows:- o Make CODEC driver a platform driver o Moved all struct snd_soc_codec list, mutex, etc initialiasation to core. o Removed all static codec pointers (drivers now support > 1 codec dev) o snd_soc_register_pcms() now done by core. o snd_soc_register_dai() folded into snd_soc_register_codec(). CS4270 portions: Acked-by: Timur Tabi <timur@freescale.com> Some TLV320aic23 and Cirrus platform fixes. Signed-off-by: Ryan Mallon <ryan@bluewatersys.com> TI CODEC and OMAP fixes Signed-off-by: Peter Ujfalusi <peter.ujfalusi@nokia.com> Signed-off-by: Janusz Krzysztofik <jkrzyszt@tis.icnet.pl> Signed-off-by: Jarkko Nikula <jhnikula@gmail.com> Samsung platform and misc fixes :- Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Reviewed-by: Jassi Brar <jassi.brar@samsung.com> Signed-off-by: Seungwhan Youn <sw.youn@samsung.com> MPC8610 and PPC fixes. Signed-off-by: Timur Tabi <timur@freescale.com> i.MX fixes and some core fixes. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> J4740 platform fixes:- Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> CC: Tony Lindgren <tony@atomide.com> CC: Nicolas Ferre <nicolas.ferre@atmel.com> CC: Kevin Hilman <khilman@deeprootsystems.com> CC: Sascha Hauer <s.hauer@pengutronix.de> CC: Atsushi Nemoto <anemo@mba.ocn.ne.jp> CC: Kuninori Morimoto <morimoto.kuninori@renesas.com> CC: Daniel Gloeckner <dg@emlix.com> CC: Manuel Lauss <mano@roarinelk.homelinux.net> CC: Mike Frysinger <vapier.adi@gmail.com> CC: Arnaud Patard <apatard@mandriva.com> CC: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-03-17 13:15:21 -07:00
static int at91sam9g20ek_wm8731_init(struct snd_soc_pcm_runtime *rtd)
{
struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
struct device *dev = rtd->dev;
int ret;
dev_dbg(dev, "%s called\n", __func__);
ret = snd_soc_dai_set_sysclk(codec_dai, WM8731_SYSCLK_MCLK,
MCLK_RATE, SND_SOC_CLOCK_IN);
if (ret < 0) {
dev_err(dev, "Failed to set WM8731 SYSCLK: %d\n", ret);
return ret;
}
#ifndef ENABLE_MIC_INPUT
snd_soc_dapm_nc_pin(&rtd->card->dapm, "Int Mic");
#endif
return 0;
}
SND_SOC_DAILINK_DEFS(pcm,
DAILINK_COMP_ARRAY(COMP_CPU("at91rm9200_ssc.0")),
DAILINK_COMP_ARRAY(COMP_CODEC("wm8731.0-001b", "wm8731-hifi")),
DAILINK_COMP_ARRAY(COMP_PLATFORM("at91rm9200_ssc.0")));
static struct snd_soc_dai_link at91sam9g20ek_dai = {
.name = "WM8731",
.stream_name = "WM8731 PCM",
.init = at91sam9g20ek_wm8731_init,
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBP_CFP,
#ifndef ENABLE_MIC_INPUT
.playback_only = true,
#endif
SND_SOC_DAILINK_REG(pcm),
};
static struct snd_soc_card snd_soc_at91sam9g20ek = {
.name = "AT91SAMG20-EK",
.owner = THIS_MODULE,
.dai_link = &at91sam9g20ek_dai,
.num_links = 1,
.dapm_widgets = at91sam9g20ek_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(at91sam9g20ek_dapm_widgets),
.dapm_routes = intercon,
.num_dapm_routes = ARRAY_SIZE(intercon),
.fully_routed = true,
};
static int at91sam9g20ek_audio_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
struct device_node *codec_np, *cpu_np;
struct snd_soc_card *card = &snd_soc_at91sam9g20ek;
int ret;
if (!np) {
return -ENODEV;
}
ret = atmel_ssc_set_audio(0);
if (ret) {
dev_err(&pdev->dev, "ssc channel is not valid: %d\n", ret);
return ret;
}
card->dev = &pdev->dev;
/* Parse device node info */
ret = snd_soc_of_parse_card_name(card, "atmel,model");
if (ret)
goto err;
ret = snd_soc_of_parse_audio_routing(card,
"atmel,audio-routing");
if (ret)
goto err;
/* Parse codec info */
at91sam9g20ek_dai.codecs->name = NULL;
codec_np = of_parse_phandle(np, "atmel,audio-codec", 0);
if (!codec_np) {
dev_err(&pdev->dev, "codec info missing\n");
ret = -EINVAL;
goto err;
}
at91sam9g20ek_dai.codecs->of_node = codec_np;
/* Parse dai and platform info */
at91sam9g20ek_dai.cpus->dai_name = NULL;
at91sam9g20ek_dai.platforms->name = NULL;
cpu_np = of_parse_phandle(np, "atmel,ssc-controller", 0);
if (!cpu_np) {
dev_err(&pdev->dev, "dai and pcm info missing\n");
of_node_put(codec_np);
ret = -EINVAL;
goto err;
}
at91sam9g20ek_dai.cpus->of_node = cpu_np;
at91sam9g20ek_dai.platforms->of_node = cpu_np;
of_node_put(codec_np);
of_node_put(cpu_np);
ret = snd_soc_register_card(card);
if (ret) {
dev_err_probe(&pdev->dev, ret,
"snd_soc_register_card() failed\n");
goto err;
}
return 0;
err:
atmel_ssc_put_audio(0);
return ret;
}
static void at91sam9g20ek_audio_remove(struct platform_device *pdev)
{
struct snd_soc_card *card = platform_get_drvdata(pdev);
snd_soc_unregister_card(card);
atmel_ssc_put_audio(0);
}
#ifdef CONFIG_OF
static const struct of_device_id at91sam9g20ek_wm8731_dt_ids[] = {
{ .compatible = "atmel,at91sam9g20ek-wm8731-audio", },
{ }
};
MODULE_DEVICE_TABLE(of, at91sam9g20ek_wm8731_dt_ids);
#endif
static struct platform_driver at91sam9g20ek_audio_driver = {
.driver = {
.name = "at91sam9g20ek-audio",
.of_match_table = of_match_ptr(at91sam9g20ek_wm8731_dt_ids),
},
.probe = at91sam9g20ek_audio_probe,
.remove = at91sam9g20ek_audio_remove,
};
module_platform_driver(at91sam9g20ek_audio_driver);
/* Module information */
MODULE_AUTHOR("Sedji Gaouaou <sedji.gaouaou@atmel.com>");
MODULE_DESCRIPTION("ALSA SoC AT91SAM9G20EK_WM8731");
MODULE_ALIAS("platform:at91sam9g20ek-audio");
MODULE_LICENSE("GPL");