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