264 lines
6.5 KiB
C
264 lines
6.5 KiB
C
/*
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* tosa.c -- SoC audio for Tosa
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*
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* Copyright 2005 Wolfson Microelectronics PLC.
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* Copyright 2005 Openedhand Ltd.
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*
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* Authors: Liam Girdwood <lrg@slimlogic.co.uk>
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* Richard Purdie <richard@openedhand.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* GPIO's
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* 1 - Jack Insertion
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* 5 - Hookswitch (headset answer/hang up switch)
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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 <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/soc.h>
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#include <asm/mach-types.h>
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#include <mach/tosa.h>
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#include <mach/audio.h>
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#define TOSA_HP 0
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#define TOSA_MIC_INT 1
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#define TOSA_HEADSET 2
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#define TOSA_HP_OFF 3
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#define TOSA_SPK_ON 0
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#define TOSA_SPK_OFF 1
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static int tosa_jack_func;
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static int tosa_spk_func;
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static void tosa_ext_control(struct snd_soc_dapm_context *dapm)
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{
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snd_soc_dapm_mutex_lock(dapm);
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/* set up jack connection */
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switch (tosa_jack_func) {
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case TOSA_HP:
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snd_soc_dapm_disable_pin_unlocked(dapm, "Mic (Internal)");
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snd_soc_dapm_enable_pin_unlocked(dapm, "Headphone Jack");
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snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
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break;
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case TOSA_MIC_INT:
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snd_soc_dapm_enable_pin_unlocked(dapm, "Mic (Internal)");
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snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
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snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
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break;
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case TOSA_HEADSET:
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snd_soc_dapm_disable_pin_unlocked(dapm, "Mic (Internal)");
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snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
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snd_soc_dapm_enable_pin_unlocked(dapm, "Headset Jack");
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break;
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}
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if (tosa_spk_func == TOSA_SPK_ON)
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snd_soc_dapm_enable_pin_unlocked(dapm, "Speaker");
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else
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snd_soc_dapm_disable_pin_unlocked(dapm, "Speaker");
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snd_soc_dapm_sync_unlocked(dapm);
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snd_soc_dapm_mutex_unlock(dapm);
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}
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static int tosa_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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/* check the jack status at stream startup */
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tosa_ext_control(&rtd->card->dapm);
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return 0;
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}
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static struct snd_soc_ops tosa_ops = {
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.startup = tosa_startup,
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};
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static int tosa_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.enumerated.item[0] = tosa_jack_func;
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return 0;
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}
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static int tosa_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_card *card = snd_kcontrol_chip(kcontrol);
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if (tosa_jack_func == ucontrol->value.enumerated.item[0])
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return 0;
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tosa_jack_func = ucontrol->value.enumerated.item[0];
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tosa_ext_control(&card->dapm);
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return 1;
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}
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static int tosa_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.enumerated.item[0] = tosa_spk_func;
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return 0;
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}
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static int tosa_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_card *card = snd_kcontrol_chip(kcontrol);
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if (tosa_spk_func == ucontrol->value.enumerated.item[0])
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return 0;
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tosa_spk_func = ucontrol->value.enumerated.item[0];
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tosa_ext_control(&card->dapm);
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return 1;
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}
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/* tosa dapm event handlers */
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static int tosa_hp_event(struct snd_soc_dapm_widget *w,
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struct snd_kcontrol *k, int event)
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{
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gpio_set_value(TOSA_GPIO_L_MUTE, SND_SOC_DAPM_EVENT_ON(event) ? 1 :0);
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return 0;
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}
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/* tosa machine dapm widgets */
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static const struct snd_soc_dapm_widget tosa_dapm_widgets[] = {
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SND_SOC_DAPM_HP("Headphone Jack", tosa_hp_event),
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SND_SOC_DAPM_HP("Headset Jack", NULL),
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SND_SOC_DAPM_MIC("Mic (Internal)", NULL),
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SND_SOC_DAPM_SPK("Speaker", NULL),
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};
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/* tosa 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 LOUT2, ROUT2 */
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{"Speaker", NULL, "LOUT2"},
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{"Speaker", NULL, "ROUT2"},
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/* internal mic is connected to mic1, mic2 differential - with bias */
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{"MIC1", NULL, "Mic Bias"},
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{"MIC2", NULL, "Mic Bias"},
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{"Mic Bias", NULL, "Mic (Internal)"},
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/* headset is connected to HPOUTR, and LINEINR with bias */
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{"Headset Jack", NULL, "HPOUTR"},
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{"LINEINR", NULL, "Mic Bias"},
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{"Mic Bias", NULL, "Headset Jack"},
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};
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static const char * const jack_function[] = {"Headphone", "Mic", "Line",
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"Headset", "Off"};
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static const char * const spk_function[] = {"On", "Off"};
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static const struct soc_enum tosa_enum[] = {
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SOC_ENUM_SINGLE_EXT(5, 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 tosa_controls[] = {
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SOC_ENUM_EXT("Jack Function", tosa_enum[0], tosa_get_jack,
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tosa_set_jack),
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SOC_ENUM_EXT("Speaker Function", tosa_enum[1], tosa_get_spk,
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tosa_set_spk),
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};
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static struct snd_soc_dai_link tosa_dai[] = {
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{
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.name = "AC97",
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.stream_name = "AC97 HiFi",
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.cpu_dai_name = "pxa2xx-ac97",
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.codec_dai_name = "wm9712-hifi",
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.platform_name = "pxa-pcm-audio",
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.codec_name = "wm9712-codec",
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.ops = &tosa_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_name = "pxa2xx-ac97-aux",
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.codec_dai_name = "wm9712-aux",
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.platform_name = "pxa-pcm-audio",
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.codec_name = "wm9712-codec",
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.ops = &tosa_ops,
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},
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};
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static struct snd_soc_card tosa = {
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.name = "Tosa",
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.owner = THIS_MODULE,
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.dai_link = tosa_dai,
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.num_links = ARRAY_SIZE(tosa_dai),
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.controls = tosa_controls,
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.num_controls = ARRAY_SIZE(tosa_controls),
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.dapm_widgets = tosa_dapm_widgets,
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.num_dapm_widgets = ARRAY_SIZE(tosa_dapm_widgets),
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.dapm_routes = audio_map,
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.num_dapm_routes = ARRAY_SIZE(audio_map),
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.fully_routed = true,
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};
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static int tosa_probe(struct platform_device *pdev)
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{
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struct snd_soc_card *card = ⤩
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int ret;
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ret = gpio_request_one(TOSA_GPIO_L_MUTE, GPIOF_OUT_INIT_LOW,
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"Headphone Jack");
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if (ret)
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return ret;
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card->dev = &pdev->dev;
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ret = devm_snd_soc_register_card(&pdev->dev, card);
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if (ret) {
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dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
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ret);
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gpio_free(TOSA_GPIO_L_MUTE);
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}
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return ret;
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}
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static int tosa_remove(struct platform_device *pdev)
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{
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gpio_free(TOSA_GPIO_L_MUTE);
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return 0;
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}
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static struct platform_driver tosa_driver = {
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.driver = {
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.name = "tosa-audio",
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.pm = &snd_soc_pm_ops,
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},
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.probe = tosa_probe,
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.remove = tosa_remove,
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};
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module_platform_driver(tosa_driver);
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/* Module information */
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MODULE_AUTHOR("Richard Purdie");
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MODULE_DESCRIPTION("ALSA SoC Tosa");
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MODULE_LICENSE("GPL");
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MODULE_ALIAS("platform:tosa-audio");
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