- 根目录:
- sound
- soc
- omap
- rx51.c
/*
* rx51.c -- SoC audio for Nokia RX-51
*
* Copyright (C) 2008 - 2009 Nokia Corporation
*
* Contact: Peter Ujfalusi <peter.ujfalusi@ti.com>
* Eduardo Valentin <eduardo.valentin@nokia.com>
* Jarkko Nikula <jarkko.nikula@bitmer.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/delay.h>
#include <linux/gpio.h>
#include <linux/platform_device.h>
#include <linux/gpio/consumer.h>
#include <linux/module.h>
#include <sound/core.h>
#include <sound/jack.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <linux/platform_data/asoc-ti-mcbsp.h>
#include "../codecs/tpa6130a2.h"
#include <asm/mach-types.h>
#include "omap-mcbsp.h"
enum {
RX51_JACK_DISABLED,
RX51_JACK_TVOUT, /* tv-out with stereo output */
RX51_JACK_HP, /* headphone: stereo output, no mic */
RX51_JACK_HS, /* headset: stereo output with mic */
};
struct rx51_audio_pdata {
struct gpio_desc *tvout_selection_gpio;
struct gpio_desc *jack_detection_gpio;
struct gpio_desc *eci_sw_gpio;
struct gpio_desc *speaker_amp_gpio;
};
static int rx51_spk_func;
static int rx51_dmic_func;
static int rx51_jack_func;
static void rx51_ext_control(struct snd_soc_dapm_context *dapm)
{
struct snd_soc_card *card = dapm->card;
struct rx51_audio_pdata *pdata = snd_soc_card_get_drvdata(card);
int hp = 0, hs = 0, tvout = 0;
switch (rx51_jack_func) {
case RX51_JACK_TVOUT:
tvout = 1;
hp = 1;
break;
case RX51_JACK_HS:
hs = 1;
case RX51_JACK_HP:
hp = 1;
break;
}
snd_soc_dapm_mutex_lock(dapm);
if (rx51_spk_func)
snd_soc_dapm_enable_pin_unlocked(dapm, "Ext Spk");
else
snd_soc_dapm_disable_pin_unlocked(dapm, "Ext Spk");
if (rx51_dmic_func)
snd_soc_dapm_enable_pin_unlocked(dapm, "DMic");
else
snd_soc_dapm_disable_pin_unlocked(dapm, "DMic");
if (hp)
snd_soc_dapm_enable_pin_unlocked(dapm, "Headphone Jack");
else
snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
if (hs)
snd_soc_dapm_enable_pin_unlocked(dapm, "HS Mic");
else
snd_soc_dapm_disable_pin_unlocked(dapm, "HS Mic");
gpiod_set_value(pdata->tvout_selection_gpio, tvout);
snd_soc_dapm_sync_unlocked(dapm);
snd_soc_dapm_mutex_unlock(dapm);
}
static int rx51_startup(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_card *card = rtd->card;
snd_pcm_hw_constraint_minmax(runtime,
SNDRV_PCM_HW_PARAM_CHANNELS, 2, 2);
rx51_ext_control(&card->dapm);
return 0;
}
static int rx51_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *codec_dai = rtd->codec_dai;
/* Set the codec system clock for DAC and ADC */
return snd_soc_dai_set_sysclk(codec_dai, 0, 19200000,
SND_SOC_CLOCK_IN);
}
static struct snd_soc_ops rx51_ops = {
.startup = rx51_startup,
.hw_params = rx51_hw_params,
};
static int rx51_get_spk(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
ucontrol->value.integer.value[0] = rx51_spk_func;
return 0;
}
static int rx51_set_spk(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
if (rx51_spk_func == ucontrol->value.integer.value[0])
return 0;
rx51_spk_func = ucontrol->value.integer.value[0];
rx51_ext_control(&card->dapm);
return 1;
}
static int rx51_spk_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *k, int event)
{
struct snd_soc_dapm_context *dapm = w->dapm;
struct snd_soc_card *card = dapm->card;
struct rx51_audio_pdata *pdata = snd_soc_card_get_drvdata(card);
gpiod_set_raw_value_cansleep(pdata->speaker_amp_gpio,
!!SND_SOC_DAPM_EVENT_ON(event));
return 0;
}
static int rx51_hp_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *k, int event)
{
struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
if (SND_SOC_DAPM_EVENT_ON(event))
tpa6130a2_stereo_enable(codec, 1);
else
tpa6130a2_stereo_enable(codec, 0);
return 0;
}
static int rx51_get_input(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
ucontrol->value.integer.value[0] = rx51_dmic_func;
return 0;
}
static int rx51_set_input(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
if (rx51_dmic_func == ucontrol->value.integer.value[0])
return 0;
rx51_dmic_func = ucontrol->value.integer.value[0];
rx51_ext_control(&card->dapm);
return 1;
}
static int rx51_get_jack(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
ucontrol->value.integer.value[0] = rx51_jack_func;
return 0;
}
static int rx51_set_jack(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
if (rx51_jack_func == ucontrol->value.integer.value[0])
return 0;
rx51_jack_func = ucontrol->value.integer.value[0];
rx51_ext_control(&card->dapm);
return 1;
}
static struct snd_soc_jack rx51_av_jack;
static struct snd_soc_jack_gpio rx51_av_jack_gpios[] = {
{
.name = "avdet-gpio",
.report = SND_JACK_HEADSET,
.invert = 1,
.debounce_time = 200,
},
};
static const struct snd_soc_dapm_widget aic34_dapm_widgets[] = {
SND_SOC_DAPM_SPK("Ext Spk", rx51_spk_event),
SND_SOC_DAPM_MIC("DMic", NULL),
SND_SOC_DAPM_HP("Headphone Jack", rx51_hp_event),
SND_SOC_DAPM_MIC("HS Mic", NULL),
SND_SOC_DAPM_LINE("FM Transmitter", NULL),
SND_SOC_DAPM_SPK("Earphone", NULL),
};
static const struct snd_soc_dapm_route audio_map[] = {
{"Ext Spk", NULL, "HPLOUT"},
{"Ext Spk", NULL, "HPROUT"},
{"Headphone Jack", NULL, "LLOUT"},
{"Headphone Jack", NULL, "RLOUT"},
{"FM Transmitter", NULL, "LLOUT"},
{"FM Transmitter", NULL, "RLOUT"},
{"DMic Rate 64", NULL, "Mic Bias"},
{"Mic Bias", NULL, "DMic"},
{"b LINE2R", NULL, "MONO_LOUT"},
{"Earphone", NULL, "b HPLOUT"},
{"LINE1L", NULL, "b Mic Bias"},
{"b Mic Bias", NULL, "HS Mic"}
};
static const char * const spk_function[] = {"Off", "On"};
static const char * const input_function[] = {"ADC", "Digital Mic"};
static const char * const jack_function[] = {
"Off", "TV-OUT", "Headphone", "Headset"
};
static const struct soc_enum rx51_enum[] = {
SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(spk_function), spk_function),
SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(input_function), input_function),
SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(jack_function), jack_function),
};
static const struct snd_kcontrol_new aic34_rx51_controls[] = {
SOC_ENUM_EXT("Speaker Function", rx51_enum[0],
rx51_get_spk, rx51_set_spk),
SOC_ENUM_EXT("Input Select", rx51_enum[1],
rx51_get_input, rx51_set_input),
SOC_ENUM_EXT("Jack Function", rx51_enum[2],
rx51_get_jack, rx51_set_jack),
SOC_DAPM_PIN_SWITCH("FM Transmitter"),
SOC_DAPM_PIN_SWITCH("Earphone"),
};
static int rx51_aic34_init(struct snd_soc_pcm_runtime *rtd)
{
struct snd_soc_codec *codec = rtd->codec;
struct snd_soc_card *card = rtd->card;
struct rx51_audio_pdata *pdata = snd_soc_card_get_drvdata(card);
struct snd_soc_dapm_context *dapm = &codec->dapm;
int err;
/* Set up NC codec pins */
snd_soc_dapm_nc_pin(dapm, "MIC3L");
snd_soc_dapm_nc_pin(dapm, "MIC3R");
snd_soc_dapm_nc_pin(dapm, "LINE1R");
err = tpa6130a2_add_controls(codec);
if (err < 0) {
dev_err(card->dev, "Failed to add TPA6130A2 controls\n");
return err;
}
snd_soc_limit_volume(codec, "TPA6130A2 Headphone Playback Volume", 42);
err = omap_mcbsp_st_add_controls(rtd, 2);
if (err < 0) {
dev_err(card->dev, "Failed to add MCBSP controls\n");
return err;
}
/* AV jack detection */
err = snd_soc_jack_new(codec, "AV Jack",
SND_JACK_HEADSET | SND_JACK_VIDEOOUT,
&rx51_av_jack);
if (err) {
dev_err(card->dev, "Failed to add AV Jack\n");
return err;
}
/* prepare gpio for snd_soc_jack_add_gpios */
rx51_av_jack_gpios[0].gpio = desc_to_gpio(pdata->jack_detection_gpio);
devm_gpiod_put(card->dev, pdata->jack_detection_gpio);
err = snd_soc_jack_add_gpios(&rx51_av_jack,
ARRAY_SIZE(rx51_av_jack_gpios),
rx51_av_jack_gpios);
if (err) {
dev_err(card->dev, "Failed to add GPIOs\n");
return err;
}
return err;
}
static int rx51_card_remove(struct snd_soc_card *card)
{
snd_soc_jack_free_gpios(&rx51_av_jack, ARRAY_SIZE(rx51_av_jack_gpios),
rx51_av_jack_gpios);
return 0;
}
/* Digital audio interface glue - connects codec <--> CPU */
static struct snd_soc_dai_link rx51_dai[] = {
{
.name = "TLV320AIC34",
.stream_name = "AIC34",
.cpu_dai_name = "omap-mcbsp.2",
.codec_dai_name = "tlv320aic3x-hifi",
.platform_name = "omap-mcbsp.2",
.codec_name = "tlv320aic3x-codec.2-0018",
.dai_fmt = SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_NF |
SND_SOC_DAIFMT_CBM_CFM,
.init = rx51_aic34_init,
.ops = &rx51_ops,
},
};
static struct snd_soc_aux_dev rx51_aux_dev[] = {
{
.name = "TLV320AIC34b",
.codec_name = "tlv320aic3x-codec.2-0019",
},
};
static struct snd_soc_codec_conf rx51_codec_conf[] = {
{
.dev_name = "tlv320aic3x-codec.2-0019",
.name_prefix = "b",
},
};
/* Audio card */
static struct snd_soc_card rx51_sound_card = {
.name = "RX-51",
.owner = THIS_MODULE,
.remove = rx51_card_remove,
.dai_link = rx51_dai,
.num_links = ARRAY_SIZE(rx51_dai),
.aux_dev = rx51_aux_dev,
.num_aux_devs = ARRAY_SIZE(rx51_aux_dev),
.codec_conf = rx51_codec_conf,
.num_configs = ARRAY_SIZE(rx51_codec_conf),
.controls = aic34_rx51_controls,
.num_controls = ARRAY_SIZE(aic34_rx51_controls),
.dapm_widgets = aic34_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(aic34_dapm_widgets),
.dapm_routes = audio_map,
.num_dapm_routes = ARRAY_SIZE(audio_map),
};
static int rx51_soc_probe(struct platform_device *pdev)
{
struct rx51_audio_pdata *pdata;
struct device_node *np = pdev->dev.of_node;
struct snd_soc_card *card = &rx51_sound_card;
int err;
if (!machine_is_nokia_rx51() && !of_machine_is_compatible("nokia,omap3-n900"))
return -ENODEV;
card->dev = &pdev->dev;
if (np) {
struct device_node *dai_node;
dai_node = of_parse_phandle(np, "nokia,cpu-dai", 0);
if (!dai_node) {
dev_err(&pdev->dev, "McBSP node is not provided\n");
return -EINVAL;
}
rx51_dai[0].cpu_dai_name = NULL;
rx51_dai[0].platform_name = NULL;
rx51_dai[0].cpu_of_node = dai_node;
rx51_dai[0].platform_of_node = dai_node;
dai_node = of_parse_phandle(np, "nokia,audio-codec", 0);
if (!dai_node) {
dev_err(&pdev->dev, "Codec node is not provided\n");
return -EINVAL;
}
rx51_dai[0].codec_name = NULL;
rx51_dai[0].codec_of_node = dai_node;
dai_node = of_parse_phandle(np, "nokia,audio-codec", 1);
if (!dai_node) {
dev_err(&pdev->dev, "Auxiliary Codec node is not provided\n");
return -EINVAL;
}
rx51_aux_dev[0].codec_name = NULL;
rx51_aux_dev[0].codec_of_node = dai_node;
rx51_codec_conf[0].dev_name = NULL;
rx51_codec_conf[0].of_node = dai_node;
dai_node = of_parse_phandle(np, "nokia,headphone-amplifier", 0);
if (!dai_node) {
dev_err(&pdev->dev, "Headphone amplifier node is not provided\n");
return -EINVAL;
}
/* TODO: tpa6130a2a driver supports only a single instance, so
* this driver ignores the headphone-amplifier node for now.
* It's already mandatory in the DT binding to be future proof.
*/
}
pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
if (pdata == NULL) {
dev_err(card->dev, "failed to create private data\n");
return -ENOMEM;
}
snd_soc_card_set_drvdata(card, pdata);
pdata->tvout_selection_gpio = devm_gpiod_get(card->dev,
"tvout-selection");
if (IS_ERR(pdata->tvout_selection_gpio)) {
dev_err(card->dev, "could not get tvout selection gpio\n");
return PTR_ERR(pdata->tvout_selection_gpio);
}
err = gpiod_direction_output(pdata->tvout_selection_gpio, 0);
if (err) {
dev_err(card->dev, "could not setup tvout selection gpio\n");
return err;
}
pdata->jack_detection_gpio = devm_gpiod_get(card->dev,
"jack-detection");
if (IS_ERR(pdata->jack_detection_gpio)) {
dev_err(card->dev, "could not get jack detection gpio\n");
return PTR_ERR(pdata->jack_detection_gpio);
}
pdata->eci_sw_gpio = devm_gpiod_get(card->dev, "eci-switch");
if (IS_ERR(pdata->eci_sw_gpio)) {
dev_err(card->dev, "could not get eci switch gpio\n");
return PTR_ERR(pdata->eci_sw_gpio);
}
err = gpiod_direction_output(pdata->eci_sw_gpio, 1);
if (err) {
dev_err(card->dev, "could not setup eci switch gpio\n");
return err;
}
pdata->speaker_amp_gpio = devm_gpiod_get(card->dev,
"speaker-amplifier");
if (IS_ERR(pdata->speaker_amp_gpio)) {
dev_err(card->dev, "could not get speaker enable gpio\n");
return PTR_ERR(pdata->speaker_amp_gpio);
}
err = gpiod_direction_output(pdata->speaker_amp_gpio, 0);
if (err) {
dev_err(card->dev, "could not setup speaker enable gpio\n");
return err;
}
err = devm_snd_soc_register_card(card->dev, card);
if (err) {
dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", err);
return err;
}
return 0;
}
#if defined(CONFIG_OF)
static const struct of_device_id rx51_audio_of_match[] = {
{ .compatible = "nokia,n900-audio", },
{},
};
MODULE_DEVICE_TABLE(of, rx51_audio_of_match);
#endif
static struct platform_driver rx51_soc_driver = {
.driver = {
.name = "rx51-audio",
.owner = THIS_MODULE,
.of_match_table = of_match_ptr(rx51_audio_of_match),
},
.probe = rx51_soc_probe,
};
module_platform_driver(rx51_soc_driver);
MODULE_AUTHOR("Nokia Corporation");
MODULE_DESCRIPTION("ALSA SoC Nokia RX-51");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:rx51-audio");