Lars-Peter Clausen
14 years ago
parent
2be4423361
commit
e5f2994620
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/*
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* Copyright (C) 2009, Yauhen Kharuzhy <jekhor@gmail.com>
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* OpenInkpot project
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* Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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#include <linux/module.h>
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#include <linux/interrupt.h>
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#include <linux/platform_device.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/soc.h>
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#include <sound/soc-dapm.h>
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#include <sound/jack.h>
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#include <linux/gpio.h>
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#include <linux/workqueue.h>
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#include "../codecs/jzcodec.h"
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#include "jz4740-pcm.h"
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#include "jz4740-i2s.h"
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#include <asm/mach-jz4740/board-n516.h>
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enum {
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N516_SPEAKER_AUTO = 0,
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N516_SPEAKER_OFF = 1,
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N516_SPEAKER_ON = 2,
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};
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static int n516_speaker_mode;
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static struct snd_soc_codec *n516_codec;
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static struct work_struct n516_headphone_work;
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static void n516_ext_control(void)
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{
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if (!n516_codec)
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return;
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switch (n516_speaker_mode) {
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case N516_SPEAKER_ON:
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snd_soc_dapm_enable_pin(n516_codec, "Speaker");
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break;
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case N516_SPEAKER_OFF:
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snd_soc_dapm_disable_pin(n516_codec, "Speaker");
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break;
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case N516_SPEAKER_AUTO:
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if (snd_soc_dapm_get_pin_status(n516_codec, "Headphone"))
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snd_soc_dapm_disable_pin(n516_codec, "Speaker");
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else
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snd_soc_dapm_enable_pin(n516_codec, "Speaker");
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break;
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default:
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break;
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}
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/* signal a DAPM event */
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snd_soc_dapm_sync(n516_codec);
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}
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static int n516_speaker_event(struct snd_soc_dapm_widget *widget,
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struct snd_kcontrol *ctrl, int event)
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{
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int on = !SND_SOC_DAPM_EVENT_OFF(event);
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gpio_set_value(GPIO_SPEAKER_ENABLE, on);
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return 0;
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}
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static void n516_headphone_event_work(struct work_struct *work)
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{
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n516_ext_control();
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}
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static int n516_headphone_event(struct snd_soc_dapm_widget *widget,
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struct snd_kcontrol *ctrl, int event)
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{
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/* We can't call soc_dapm_sync from a event handler */
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if (event & (SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD))
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schedule_work(&n516_headphone_work);
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return 0;
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}
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static const struct snd_soc_dapm_widget n516_widgets[] = {
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SND_SOC_DAPM_SPK("Speaker", n516_speaker_event),
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SND_SOC_DAPM_HP("Headphone", n516_headphone_event),
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SND_SOC_DAPM_MIC("Mic", NULL),
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};
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static const struct snd_soc_dapm_route n516_routes[] = {
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{"Mic", NULL, "MIC"},
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{"Speaker", NULL, "LOUT"},
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{"Speaker", NULL, "ROUT"},
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{"Headphone", NULL, "LOUT"},
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{"Headphone", NULL, "ROUT"},
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};
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static const char *n516_speaker_modes[] = {"Auto", "Off", "On"};
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static const struct soc_enum n516_speaker_mode_enum =
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SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(n516_speaker_modes), n516_speaker_modes);
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static int n516_get_speaker_mode(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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ucontrol->value.integer.value[0] = n516_speaker_mode;
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return 0;
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}
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static int n516_set_speaker_mode(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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if (n516_speaker_mode == ucontrol->value.integer.value[0])
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return 0;
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n516_speaker_mode = ucontrol->value.integer.value[0];
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n516_ext_control();
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return 1;
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}
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static const struct snd_kcontrol_new n516_controls[] = {
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SOC_ENUM_EXT("Speaker Function", n516_speaker_mode_enum,
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n516_get_speaker_mode, n516_set_speaker_mode),
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};
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#define N516_DAIFMT (SND_SOC_DAIFMT_I2S | \
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SND_SOC_DAIFMT_NB_NF | \
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SND_SOC_DAIFMT_CBM_CFM)
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static int n516_codec_init(struct snd_soc_codec *codec)
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{
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int ret;
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struct snd_soc_dai *cpu_dai = codec->socdev->card->dai_link->cpu_dai;
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struct snd_soc_dai *codec_dai = codec->socdev->card->dai_link->codec_dai;
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n516_codec = codec;
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snd_soc_dapm_nc_pin(codec, "LIN");
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snd_soc_dapm_nc_pin(codec, "RIN");
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ret = snd_soc_dai_set_fmt(codec_dai, N516_DAIFMT);
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if (ret < 0) {
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dev_err(codec->dev, "Failed to set codec dai format: %d\n", ret);
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return ret;
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}
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ret = snd_soc_dai_set_fmt(cpu_dai, N516_DAIFMT);
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if (ret < 0) {
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dev_err(codec->dev, "Failed to set cpu dai format: %d\n", ret);
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return ret;
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}
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ret = snd_soc_dai_set_sysclk(codec_dai, JZCODEC_SYSCLK, 111,
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SND_SOC_CLOCK_IN);
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if (ret < 0) {
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dev_err(codec->dev, "Failed to set codec dai sysclk: %d\n", ret);
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return ret;
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}
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ret = snd_soc_add_controls(codec, n516_controls,
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ARRAY_SIZE(n516_controls));
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if (ret) {
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dev_err(codec->dev, "Failed to add controls: %d\n", ret);
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return ret;
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}
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ret = snd_soc_dapm_new_controls(codec, n516_widgets,
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ARRAY_SIZE(n516_widgets));
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if (ret) {
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dev_err(codec->dev, "Failed to add dapm controls: %d\n", ret);
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return ret;
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}
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ret = snd_soc_dapm_add_routes(codec, n516_routes, ARRAY_SIZE(n516_routes));
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if (ret) {
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dev_err(codec->dev, "Failed to add dapm routes: %d\n", ret);
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return ret;
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}
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snd_soc_dapm_sync(codec);
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return 0;
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}
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static struct snd_soc_dai_link n516_dai = {
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.name = "jz-codec",
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.stream_name = "JZCODEC",
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.cpu_dai = &jz4740_i2s_dai,
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.codec_dai = &jz_codec_dai,
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.init = n516_codec_init,
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};
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static struct snd_soc_card n516_card = {
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.name = "N516",
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.dai_link = &n516_dai,
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.num_links = 1,
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.platform = &jz4740_soc_platform,
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};
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static struct snd_soc_device n516_snd_devdata = {
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.card = &n516_card,
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.codec_dev = &soc_codec_dev_jzcodec,
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};
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static struct platform_device *n516_snd_device;
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static struct snd_soc_jack n516_hp_jack;
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static struct snd_soc_jack_pin n516_hp_pin = {
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.pin = "Headphone",
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.mask = SND_JACK_HEADPHONE,
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};
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static struct snd_soc_jack_gpio n516_hp_gpio = {
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.gpio = GPIO_HPHONE_DETECT,
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.name = "Headphone detect",
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.report = SND_JACK_HEADPHONE,
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.debounce_time = 100,
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};
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static int __init n516_add_headphone_jack(void)
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{
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int ret;
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ret = snd_soc_jack_new(&n516_card, "Headphone jack",
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SND_JACK_HEADPHONE, &n516_hp_jack);
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if (ret)
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return ret;
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ret = snd_soc_jack_add_pins(&n516_hp_jack, 1, &n516_hp_pin);
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if (ret)
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return ret;
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ret = snd_soc_jack_add_gpios(&n516_hp_jack, 1, &n516_hp_gpio);
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return ret;
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}
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static int __init n516_init(void)
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{
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int ret;
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n516_snd_device = platform_device_alloc("soc-audio", -1);
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if (!n516_snd_device)
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return -ENOMEM;
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ret = gpio_request(GPIO_SPEAKER_ENABLE, "Speaker enable");
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if (ret) {
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pr_err("n516 snd: Failed to request SPEAKER_ENABLE GPIO(%d): %d\n",
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GPIO_SPEAKER_ENABLE, ret);
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goto err_device_put;
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}
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gpio_direction_output(GPIO_SPEAKER_ENABLE, 0);
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INIT_WORK(&n516_headphone_work, n516_headphone_event_work);
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platform_set_drvdata(n516_snd_device, &n516_snd_devdata);
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n516_snd_devdata.dev = &n516_snd_device->dev;
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ret = platform_device_add(n516_snd_device);
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if (ret) {
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pr_err("n516 snd: Failed to add snd soc device: %d\n", ret);
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goto err_unset_pdata;
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}
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ret = n516_add_headphone_jack();
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/* We can live without it, so just print a warning */
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if (ret)
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pr_warning("n516 snd: Failed to initalise headphone jack: %d\n", ret);
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return 0;
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err_unset_pdata:
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platform_set_drvdata(n516_snd_device, NULL);
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/*err_gpio_free_speaker:*/
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gpio_free(GPIO_SPEAKER_ENABLE);
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err_device_put:
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platform_device_put(n516_snd_device);
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return ret;
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}
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module_init(n516_init);
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static void __exit n516_exit(void)
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{
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snd_soc_jack_free_gpios(&n516_hp_jack, 1, &n516_hp_gpio);
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gpio_free(GPIO_SPEAKER_ENABLE);
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platform_device_unregister(n516_snd_device);
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}
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module_exit(n516_exit);
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MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
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MODULE_DESCRIPTION("ALSA SoC N516 Audio support");
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MODULE_LICENSE("GPL v2");
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