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ubuntu-linux-kernel/sound/soc/omap/omap-twl4030.c

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/*
* omap-twl4030.c -- SoC audio for TI SoC based boards with twl4030 codec
*
* Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com
* All rights reserved.
*
* Author: Peter Ujfalusi <peter.ujfalusi@ti.com>
*
* This driver replaces the following machine drivers:
* omap3beagle (Author: Steve Sakoman <steve@sakoman.com>)
* omap3evm (Author: Anuj Aggarwal <anuj.aggarwal@ti.com>)
* overo (Author: Steve Sakoman <steve@sakoman.com>)
* igep0020 (Author: Enric Balletbo i Serra <eballetbo@iseebcn.com>)
* zoom2 (Author: Misael Lopez Cruz <misael.lopez@ti.com>)
* sdp3430 (Author: Misael Lopez Cruz <misael.lopez@ti.com>)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
*/
#include <linux/platform_device.h>
#include <linux/platform_data/omap-twl4030.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/gpio.h>
#include <linux/of_gpio.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <sound/jack.h>
#include "omap-mcbsp.h"
struct omap_twl4030 {
int jack_detect; /* board can detect jack events */
struct snd_soc_jack hs_jack;
};
static int omap_twl4030_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
unsigned int fmt;
switch (params_channels(params)) {
case 2: /* Stereo I2S mode */
fmt = SND_SOC_DAIFMT_I2S |
SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBM_CFM;
break;
case 4: /* Four channel TDM mode */
fmt = SND_SOC_DAIFMT_DSP_A |
SND_SOC_DAIFMT_IB_NF |
SND_SOC_DAIFMT_CBM_CFM;
break;
default:
return -EINVAL;
}
return snd_soc_runtime_set_dai_fmt(rtd, fmt);
}
static const struct snd_soc_ops omap_twl4030_ops = {
.hw_params = omap_twl4030_hw_params,
};
static const struct snd_soc_dapm_widget dapm_widgets[] = {
SND_SOC_DAPM_SPK("Earpiece Spk", NULL),
SND_SOC_DAPM_SPK("Handsfree Spk", NULL),
SND_SOC_DAPM_HP("Headset Stereophone", NULL),
SND_SOC_DAPM_SPK("Ext Spk", NULL),
SND_SOC_DAPM_SPK("Carkit Spk", NULL),
SND_SOC_DAPM_MIC("Main Mic", NULL),
SND_SOC_DAPM_MIC("Sub Mic", NULL),
SND_SOC_DAPM_MIC("Headset Mic", NULL),
SND_SOC_DAPM_MIC("Carkit Mic", NULL),
SND_SOC_DAPM_MIC("Digital0 Mic", NULL),
SND_SOC_DAPM_MIC("Digital1 Mic", NULL),
SND_SOC_DAPM_LINE("Line In", NULL),
};
static const struct snd_soc_dapm_route audio_map[] = {
/* Headset Stereophone: HSOL, HSOR */
{"Headset Stereophone", NULL, "HSOL"},
{"Headset Stereophone", NULL, "HSOR"},
/* External Speakers: HFL, HFR */
{"Handsfree Spk", NULL, "HFL"},
{"Handsfree Spk", NULL, "HFR"},
/* External Speakers: PredrivL, PredrivR */
{"Ext Spk", NULL, "PREDRIVEL"},
{"Ext Spk", NULL, "PREDRIVER"},
/* Carkit speakers: CARKITL, CARKITR */
{"Carkit Spk", NULL, "CARKITL"},
{"Carkit Spk", NULL, "CARKITR"},
/* Earpiece */
{"Earpiece Spk", NULL, "EARPIECE"},
/* External Mics: MAINMIC, SUBMIC with bias */
{"MAINMIC", NULL, "Main Mic"},
{"Main Mic", NULL, "Mic Bias 1"},
{"SUBMIC", NULL, "Sub Mic"},
{"Sub Mic", NULL, "Mic Bias 2"},
/* Headset Mic: HSMIC with bias */
{"HSMIC", NULL, "Headset Mic"},
{"Headset Mic", NULL, "Headset Mic Bias"},
/* Digital Mics: DIGIMIC0, DIGIMIC1 with bias */
{"DIGIMIC0", NULL, "Digital0 Mic"},
{"Digital0 Mic", NULL, "Mic Bias 1"},
{"DIGIMIC1", NULL, "Digital1 Mic"},
{"Digital1 Mic", NULL, "Mic Bias 2"},
/* Carkit In: CARKITMIC */
{"CARKITMIC", NULL, "Carkit Mic"},
/* Aux In: AUXL, AUXR */
{"AUXL", NULL, "Line In"},
{"AUXR", NULL, "Line In"},
};
/* Headset jack detection DAPM pins */
static struct snd_soc_jack_pin hs_jack_pins[] = {
{
.pin = "Headset Mic",
.mask = SND_JACK_MICROPHONE,
},
{
.pin = "Headset Stereophone",
.mask = SND_JACK_HEADPHONE,
},
};
/* Headset jack detection gpios */
static struct snd_soc_jack_gpio hs_jack_gpios[] = {
{
.name = "hsdet-gpio",
.report = SND_JACK_HEADSET,
.debounce_time = 200,
},
};
static inline void twl4030_disconnect_pin(struct snd_soc_dapm_context *dapm,
int connected, char *pin)
{
if (!connected)
snd_soc_dapm_disable_pin(dapm, pin);
}
static int omap_twl4030_init(struct snd_soc_pcm_runtime *rtd)
{
struct snd_soc_card *card = rtd->card;
struct snd_soc_dapm_context *dapm = &card->dapm;
struct omap_tw4030_pdata *pdata = dev_get_platdata(card->dev);
struct omap_twl4030 *priv = snd_soc_card_get_drvdata(card);
int ret = 0;
/* Headset jack detection only if it is supported */
if (priv->jack_detect > 0) {
hs_jack_gpios[0].gpio = priv->jack_detect;
ret = snd_soc_card_jack_new(rtd->card, "Headset Jack",
SND_JACK_HEADSET, &priv->hs_jack,
hs_jack_pins,
ARRAY_SIZE(hs_jack_pins));
if (ret)
return ret;
ret = snd_soc_jack_add_gpios(&priv->hs_jack,
ARRAY_SIZE(hs_jack_gpios),
hs_jack_gpios);
if (ret)
return ret;
}
/*
* NULL pdata means we booted with DT. In this case the routing is
* provided and the card is fully routed, no need to mark pins.
*/
if (!pdata || !pdata->custom_routing)
return ret;
/* Disable not connected paths if not used */
twl4030_disconnect_pin(dapm, pdata->has_ear, "Earpiece Spk");
twl4030_disconnect_pin(dapm, pdata->has_hf, "Handsfree Spk");
twl4030_disconnect_pin(dapm, pdata->has_hs, "Headset Stereophone");
twl4030_disconnect_pin(dapm, pdata->has_predriv, "Ext Spk");
twl4030_disconnect_pin(dapm, pdata->has_carkit, "Carkit Spk");
twl4030_disconnect_pin(dapm, pdata->has_mainmic, "Main Mic");
twl4030_disconnect_pin(dapm, pdata->has_submic, "Sub Mic");
twl4030_disconnect_pin(dapm, pdata->has_hsmic, "Headset Mic");
twl4030_disconnect_pin(dapm, pdata->has_carkitmic, "Carkit Mic");
twl4030_disconnect_pin(dapm, pdata->has_digimic0, "Digital0 Mic");
twl4030_disconnect_pin(dapm, pdata->has_digimic1, "Digital1 Mic");
twl4030_disconnect_pin(dapm, pdata->has_linein, "Line In");
return ret;
}
/* Digital audio interface glue - connects codec <--> CPU */
static struct snd_soc_dai_link omap_twl4030_dai_links[] = {
{
.name = "TWL4030 HiFi",
.stream_name = "TWL4030 HiFi",
.cpu_dai_name = "omap-mcbsp.2",
.codec_dai_name = "twl4030-hifi",
.platform_name = "omap-mcbsp.2",
.codec_name = "twl4030-codec",
.init = omap_twl4030_init,
.ops = &omap_twl4030_ops,
},
{
.name = "TWL4030 Voice",
.stream_name = "TWL4030 Voice",
.cpu_dai_name = "omap-mcbsp.3",
.codec_dai_name = "twl4030-voice",
.platform_name = "omap-mcbsp.3",
.codec_name = "twl4030-codec",
.dai_fmt = SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_NF |
SND_SOC_DAIFMT_CBM_CFM,
},
};
/* Audio machine driver */
static struct snd_soc_card omap_twl4030_card = {
.owner = THIS_MODULE,
.dai_link = omap_twl4030_dai_links,
.num_links = ARRAY_SIZE(omap_twl4030_dai_links),
.dapm_widgets = dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(dapm_widgets),
.dapm_routes = audio_map,
.num_dapm_routes = ARRAY_SIZE(audio_map),
};
static int omap_twl4030_probe(struct platform_device *pdev)
{
struct omap_tw4030_pdata *pdata = dev_get_platdata(&pdev->dev);
struct device_node *node = pdev->dev.of_node;
struct snd_soc_card *card = &omap_twl4030_card;
struct omap_twl4030 *priv;
int ret = 0;
card->dev = &pdev->dev;
priv = devm_kzalloc(&pdev->dev, sizeof(struct omap_twl4030), GFP_KERNEL);
if (priv == NULL)
return -ENOMEM;
if (node) {
struct device_node *dai_node;
struct property *prop;
if (snd_soc_of_parse_card_name(card, "ti,model")) {
dev_err(&pdev->dev, "Card name is not provided\n");
return -ENODEV;
}
dai_node = of_parse_phandle(node, "ti,mcbsp", 0);
if (!dai_node) {
dev_err(&pdev->dev, "McBSP node is not provided\n");
return -EINVAL;
}
omap_twl4030_dai_links[0].cpu_dai_name = NULL;
omap_twl4030_dai_links[0].cpu_of_node = dai_node;
omap_twl4030_dai_links[0].platform_name = NULL;
omap_twl4030_dai_links[0].platform_of_node = dai_node;
dai_node = of_parse_phandle(node, "ti,mcbsp-voice", 0);
if (!dai_node) {
card->num_links = 1;
} else {
omap_twl4030_dai_links[1].cpu_dai_name = NULL;
omap_twl4030_dai_links[1].cpu_of_node = dai_node;
omap_twl4030_dai_links[1].platform_name = NULL;
omap_twl4030_dai_links[1].platform_of_node = dai_node;
}
priv->jack_detect = of_get_named_gpio(node,
"ti,jack-det-gpio", 0);
/* Optional: audio routing can be provided */
prop = of_find_property(node, "ti,audio-routing", NULL);
if (prop) {
ret = snd_soc_of_parse_audio_routing(card,
"ti,audio-routing");
if (ret)
return ret;
card->fully_routed = 1;
}
} else if (pdata) {
if (pdata->card_name) {
card->name = pdata->card_name;
} else {
dev_err(&pdev->dev, "Card name is not provided\n");
return -ENODEV;
}
if (!pdata->voice_connected)
card->num_links = 1;
priv->jack_detect = pdata->jack_detect;
} else {
dev_err(&pdev->dev, "Missing pdata\n");
return -ENODEV;
}
snd_soc_card_set_drvdata(card, priv);
ret = devm_snd_soc_register_card(&pdev->dev, card);
if (ret) {
dev_err(&pdev->dev, "devm_snd_soc_register_card() failed: %d\n",
ret);
return ret;
}
return 0;
}
static const struct of_device_id omap_twl4030_of_match[] = {
{.compatible = "ti,omap-twl4030", },
{ },
};
MODULE_DEVICE_TABLE(of, omap_twl4030_of_match);
static struct platform_driver omap_twl4030_driver = {
.driver = {
.name = "omap-twl4030",
.pm = &snd_soc_pm_ops,
.of_match_table = omap_twl4030_of_match,
},
.probe = omap_twl4030_probe,
};
module_platform_driver(omap_twl4030_driver);
MODULE_AUTHOR("Peter Ujfalusi <peter.ujfalusi@ti.com>");
MODULE_DESCRIPTION("ALSA SoC for TI SoC based boards with twl4030 codec");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:omap-twl4030");
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