270 lines
6.5 KiB
C
270 lines
6.5 KiB
C
/*
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* linux/sound/soc/pxa/palm27x.c
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*
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* SoC Audio driver for Palm T|X, T5 and LifeDrive
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*
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* based on tosa.c
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*
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* Copyright (C) 2008 Marek Vasut <marek.vasut@gmail.com>
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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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*/
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/device.h>
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#include <linux/gpio.h>
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#include <linux/interrupt.h>
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#include <linux/irq.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 <asm/mach-types.h>
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#include <mach/audio.h>
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#include <mach/palmasoc.h>
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#include "../codecs/wm9712.h"
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#include "pxa2xx-pcm.h"
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#include "pxa2xx-ac97.h"
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static int palm27x_jack_func = 1;
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static int palm27x_spk_func = 1;
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static int palm27x_ep_gpio = -1;
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static void palm27x_ext_control(struct snd_soc_codec *codec)
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{
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if (!palm27x_spk_func)
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snd_soc_dapm_enable_pin(codec, "Speaker");
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else
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snd_soc_dapm_disable_pin(codec, "Speaker");
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if (!palm27x_jack_func)
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snd_soc_dapm_enable_pin(codec, "Headphone Jack");
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else
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snd_soc_dapm_disable_pin(codec, "Headphone Jack");
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snd_soc_dapm_sync(codec);
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}
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static int palm27x_startup(struct snd_pcm_substream *substream)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_codec *codec = rtd->socdev->codec;
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/* check the jack status at stream startup */
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palm27x_ext_control(codec);
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return 0;
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}
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static struct snd_soc_ops palm27x_ops = {
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.startup = palm27x_startup,
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};
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static irqreturn_t palm27x_interrupt(int irq, void *v)
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{
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palm27x_spk_func = gpio_get_value(palm27x_ep_gpio);
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palm27x_jack_func = !palm27x_spk_func;
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return IRQ_HANDLED;
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}
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static int palm27x_get_jack(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] = palm27x_jack_func;
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return 0;
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}
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static int palm27x_set_jack(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
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if (palm27x_jack_func == ucontrol->value.integer.value[0])
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return 0;
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palm27x_jack_func = ucontrol->value.integer.value[0];
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palm27x_ext_control(codec);
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return 1;
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}
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static int palm27x_get_spk(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] = palm27x_spk_func;
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return 0;
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}
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static int palm27x_set_spk(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
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if (palm27x_spk_func == ucontrol->value.integer.value[0])
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return 0;
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palm27x_spk_func = ucontrol->value.integer.value[0];
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palm27x_ext_control(codec);
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return 1;
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}
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/* PalmTX machine dapm widgets */
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static const struct snd_soc_dapm_widget palm27x_dapm_widgets[] = {
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SND_SOC_DAPM_HP("Headphone Jack", NULL),
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SND_SOC_DAPM_SPK("Speaker", NULL),
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};
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/* PalmTX audio map */
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static const struct snd_soc_dapm_route audio_map[] = {
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/* headphone connected to HPOUTL, HPOUTR */
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{"Headphone Jack", NULL, "HPOUTL"},
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{"Headphone Jack", NULL, "HPOUTR"},
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/* ext speaker connected to ROUT2, LOUT2 */
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{"Speaker", NULL, "LOUT2"},
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{"Speaker", NULL, "ROUT2"},
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};
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static const char *jack_function[] = {"Headphone", "Off"};
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static const char *spk_function[] = {"On", "Off"};
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static const struct soc_enum palm27x_enum[] = {
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SOC_ENUM_SINGLE_EXT(2, jack_function),
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SOC_ENUM_SINGLE_EXT(2, spk_function),
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};
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static const struct snd_kcontrol_new palm27x_controls[] = {
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SOC_ENUM_EXT("Jack Function", palm27x_enum[0], palm27x_get_jack,
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palm27x_set_jack),
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SOC_ENUM_EXT("Speaker Function", palm27x_enum[1], palm27x_get_spk,
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palm27x_set_spk),
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};
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static int palm27x_ac97_init(struct snd_soc_codec *codec)
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{
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int i, err;
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snd_soc_dapm_nc_pin(codec, "OUT3");
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snd_soc_dapm_nc_pin(codec, "MONOOUT");
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/* add palm27x specific controls */
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for (i = 0; i < ARRAY_SIZE(palm27x_controls); i++) {
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err = snd_ctl_add(codec->card,
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snd_soc_cnew(&palm27x_controls[i],
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codec, NULL));
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if (err < 0)
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return err;
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}
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/* add palm27x specific widgets */
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snd_soc_dapm_new_controls(codec, palm27x_dapm_widgets,
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ARRAY_SIZE(palm27x_dapm_widgets));
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/* set up palm27x specific audio path audio_map */
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snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
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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 palm27x_dai[] = {
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{
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.name = "AC97 HiFi",
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.stream_name = "AC97 HiFi",
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.cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_HIFI],
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.codec_dai = &wm9712_dai[WM9712_DAI_AC97_HIFI],
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.init = palm27x_ac97_init,
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.ops = &palm27x_ops,
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},
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{
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.name = "AC97 Aux",
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.stream_name = "AC97 Aux",
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.cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_AUX],
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.codec_dai = &wm9712_dai[WM9712_DAI_AC97_AUX],
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.ops = &palm27x_ops,
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},
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};
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static struct snd_soc_card palm27x_asoc = {
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.name = "Palm/PXA27x",
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.platform = &pxa2xx_soc_platform,
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.dai_link = palm27x_dai,
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.num_links = ARRAY_SIZE(palm27x_dai),
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};
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static struct snd_soc_device palm27x_snd_devdata = {
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.card = &palm27x_asoc,
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.codec_dev = &soc_codec_dev_wm9712,
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};
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static struct platform_device *palm27x_snd_device;
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static int __init palm27x_asoc_init(void)
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{
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int ret;
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if (!(machine_is_palmtx() || machine_is_palmt5() ||
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machine_is_palmld()))
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return -ENODEV;
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ret = gpio_request(palm27x_ep_gpio, "Headphone Jack");
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if (ret)
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return ret;
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ret = gpio_direction_input(palm27x_ep_gpio);
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if (ret)
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goto err_alloc;
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if (request_irq(gpio_to_irq(palm27x_ep_gpio), palm27x_interrupt,
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IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
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"Headphone jack", NULL))
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goto err_alloc;
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palm27x_snd_device = platform_device_alloc("soc-audio", -1);
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if (!palm27x_snd_device) {
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ret = -ENOMEM;
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goto err_dev;
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}
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platform_set_drvdata(palm27x_snd_device, &palm27x_snd_devdata);
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palm27x_snd_devdata.dev = &palm27x_snd_device->dev;
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ret = platform_device_add(palm27x_snd_device);
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if (ret != 0)
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goto put_device;
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return 0;
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put_device:
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platform_device_put(palm27x_snd_device);
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err_dev:
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free_irq(gpio_to_irq(palm27x_ep_gpio), NULL);
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err_alloc:
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gpio_free(palm27x_ep_gpio);
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return ret;
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}
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static void __exit palm27x_asoc_exit(void)
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{
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free_irq(gpio_to_irq(palm27x_ep_gpio), NULL);
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gpio_free(palm27x_ep_gpio);
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platform_device_unregister(palm27x_snd_device);
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}
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void __init palm27x_asoc_set_pdata(struct palm27x_asoc_info *data)
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{
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palm27x_ep_gpio = data->jack_gpio;
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}
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module_init(palm27x_asoc_init);
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module_exit(palm27x_asoc_exit);
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/* Module information */
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MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>");
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MODULE_DESCRIPTION("ALSA SoC Palm T|X, T5 and LifeDrive");
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MODULE_LICENSE("GPL");
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