diff options
Diffstat (limited to 'sound/soc/pxa/tosa.c')
| -rw-r--r-- | sound/soc/pxa/tosa.c | 255 |
1 files changed, 255 insertions, 0 deletions
diff --git a/sound/soc/pxa/tosa.c b/sound/soc/pxa/tosa.c new file mode 100644 index 000000000..30f83cab0 --- /dev/null +++ b/sound/soc/pxa/tosa.c @@ -0,0 +1,255 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * 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> + * + * 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/consumer.h> + +#include <sound/core.h> +#include <sound/pcm.h> +#include <sound/soc.h> + +#include <asm/mach-types.h> +#include <linux/platform_data/asoc-pxa.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 struct gpio_desc *tosa_mute; +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 = asoc_substream_to_rtd(substream); + + /* 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) +{ + gpiod_set_value(tosa_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), +}; + +SND_SOC_DAILINK_DEFS(ac97, + DAILINK_COMP_ARRAY(COMP_CPU("pxa2xx-ac97")), + DAILINK_COMP_ARRAY(COMP_CODEC("wm9712-codec", "wm9712-hifi")), + DAILINK_COMP_ARRAY(COMP_PLATFORM("pxa-pcm-audio"))); + +SND_SOC_DAILINK_DEFS(ac97_aux, + DAILINK_COMP_ARRAY(COMP_CPU("pxa2xx-ac97-aux")), + DAILINK_COMP_ARRAY(COMP_CODEC("wm9712-codec", "wm9712-aux")), + DAILINK_COMP_ARRAY(COMP_PLATFORM("pxa-pcm-audio"))); + +static struct snd_soc_dai_link tosa_dai[] = { +{ + .name = "AC97", + .stream_name = "AC97 HiFi", + .ops = &tosa_ops, + SND_SOC_DAILINK_REG(ac97), +}, +{ + .name = "AC97 Aux", + .stream_name = "AC97 Aux", + .ops = &tosa_ops, + SND_SOC_DAILINK_REG(ac97_aux), +}, +}; + +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; + + tosa_mute = devm_gpiod_get(&pdev->dev, NULL, GPIOD_OUT_LOW); + if (IS_ERR(tosa_mute)) + return dev_err_probe(&pdev->dev, PTR_ERR(tosa_mute), + "failed to get L_MUTE GPIO\n"); + gpiod_set_consumer_name(tosa_mute, "Headphone Jack"); + + 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); + } + return ret; +} + +static struct platform_driver tosa_driver = { + .driver = { + .name = "tosa-audio", + .pm = &snd_soc_pm_ops, + }, + .probe = tosa_probe, +}; + +module_platform_driver(tosa_driver); + +/* Module information */ +MODULE_AUTHOR("Richard Purdie"); +MODULE_DESCRIPTION("ALSA SoC Tosa"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:tosa-audio"); |