diff options
Diffstat (limited to 'sound/soc/pxa/palm27x.c')
| -rw-r--r-- | sound/soc/pxa/palm27x.c | 269 |
1 files changed, 269 insertions, 0 deletions
diff --git a/sound/soc/pxa/palm27x.c b/sound/soc/pxa/palm27x.c new file mode 100644 index 00000000000..4a9cf3083af --- /dev/null +++ b/sound/soc/pxa/palm27x.c @@ -0,0 +1,269 @@ +/* + * linux/sound/soc/pxa/palm27x.c + * + * SoC Audio driver for Palm T|X, T5 and LifeDrive + * + * based on tosa.c + * + * Copyright (C) 2008 Marek Vasut <marek.vasut@gmail.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + */ + +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/device.h> +#include <linux/gpio.h> +#include <linux/interrupt.h> +#include <linux/irq.h> + +#include <sound/core.h> +#include <sound/pcm.h> +#include <sound/soc.h> +#include <sound/soc-dapm.h> + +#include <asm/mach-types.h> +#include <mach/audio.h> +#include <mach/palmasoc.h> + +#include "../codecs/wm9712.h" +#include "pxa2xx-pcm.h" +#include "pxa2xx-ac97.h" + +static int palm27x_jack_func = 1; +static int palm27x_spk_func = 1; +static int palm27x_ep_gpio = -1; + +static void palm27x_ext_control(struct snd_soc_codec *codec) +{ + if (!palm27x_spk_func) + snd_soc_dapm_enable_pin(codec, "Speaker"); + else + snd_soc_dapm_disable_pin(codec, "Speaker"); + + if (!palm27x_jack_func) + snd_soc_dapm_enable_pin(codec, "Headphone Jack"); + else + snd_soc_dapm_disable_pin(codec, "Headphone Jack"); + + snd_soc_dapm_sync(codec); +} + +static int palm27x_startup(struct snd_pcm_substream *substream) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_codec *codec = rtd->socdev->codec; + + /* check the jack status at stream startup */ + palm27x_ext_control(codec); + return 0; +} + +static struct snd_soc_ops palm27x_ops = { + .startup = palm27x_startup, +}; + +static irqreturn_t palm27x_interrupt(int irq, void *v) +{ + palm27x_spk_func = gpio_get_value(palm27x_ep_gpio); + palm27x_jack_func = !palm27x_spk_func; + return IRQ_HANDLED; +} + +static int palm27x_get_jack(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + ucontrol->value.integer.value[0] = palm27x_jack_func; + return 0; +} + +static int palm27x_set_jack(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); + + if (palm27x_jack_func == ucontrol->value.integer.value[0]) + return 0; + + palm27x_jack_func = ucontrol->value.integer.value[0]; + palm27x_ext_control(codec); + return 1; +} + +static int palm27x_get_spk(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + ucontrol->value.integer.value[0] = palm27x_spk_func; + return 0; +} + +static int palm27x_set_spk(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); + + if (palm27x_spk_func == ucontrol->value.integer.value[0]) + return 0; + + palm27x_spk_func = ucontrol->value.integer.value[0]; + palm27x_ext_control(codec); + return 1; +} + +/* PalmTX machine dapm widgets */ +static const struct snd_soc_dapm_widget palm27x_dapm_widgets[] = { + SND_SOC_DAPM_HP("Headphone Jack", NULL), + SND_SOC_DAPM_SPK("Speaker", NULL), +}; + +/* PalmTX 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 ROUT2, LOUT2 */ + {"Speaker", NULL, "LOUT2"}, + {"Speaker", NULL, "ROUT2"}, +}; + +static const char *jack_function[] = {"Headphone", "Off"}; +static const char *spk_function[] = {"On", "Off"}; +static const struct soc_enum palm27x_enum[] = { + SOC_ENUM_SINGLE_EXT(2, jack_function), + SOC_ENUM_SINGLE_EXT(2, spk_function), +}; + +static const struct snd_kcontrol_new palm27x_controls[] = { + SOC_ENUM_EXT("Jack Function", palm27x_enum[0], palm27x_get_jack, + palm27x_set_jack), + SOC_ENUM_EXT("Speaker Function", palm27x_enum[1], palm27x_get_spk, + palm27x_set_spk), +}; + +static int palm27x_ac97_init(struct snd_soc_codec *codec) +{ + int i, err; + + snd_soc_dapm_nc_pin(codec, "OUT3"); + snd_soc_dapm_nc_pin(codec, "MONOOUT"); + + /* add palm27x specific controls */ + for (i = 0; i < ARRAY_SIZE(palm27x_controls); i++) { + err = snd_ctl_add(codec->card, + snd_soc_cnew(&palm27x_controls[i], + codec, NULL)); + if (err < 0) + return err; + } + + /* add palm27x specific widgets */ + snd_soc_dapm_new_controls(codec, palm27x_dapm_widgets, + ARRAY_SIZE(palm27x_dapm_widgets)); + + /* set up palm27x specific audio path audio_map */ + snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map)); + + snd_soc_dapm_sync(codec); + return 0; +} + +static struct snd_soc_dai_link palm27x_dai[] = { +{ + .name = "AC97 HiFi", + .stream_name = "AC97 HiFi", + .cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_HIFI], + .codec_dai = &wm9712_dai[WM9712_DAI_AC97_HIFI], + .init = palm27x_ac97_init, + .ops = &palm27x_ops, +}, +{ + .name = "AC97 Aux", + .stream_name = "AC97 Aux", + .cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_AUX], + .codec_dai = &wm9712_dai[WM9712_DAI_AC97_AUX], + .ops = &palm27x_ops, +}, +}; + +static struct snd_soc_card palm27x_asoc = { + .name = "Palm/PXA27x", + .platform = &pxa2xx_soc_platform, + .dai_link = palm27x_dai, + .num_links = ARRAY_SIZE(palm27x_dai), +}; + +static struct snd_soc_device palm27x_snd_devdata = { + .card = &palm27x_asoc, + .codec_dev = &soc_codec_dev_wm9712, +}; + +static struct platform_device *palm27x_snd_device; + +static int __init palm27x_asoc_init(void) +{ + int ret; + + if (!(machine_is_palmtx() || machine_is_palmt5() || + machine_is_palmld())) + return -ENODEV; + + ret = gpio_request(palm27x_ep_gpio, "Headphone Jack"); + if (ret) + return ret; + ret = gpio_direction_input(palm27x_ep_gpio); + if (ret) + goto err_alloc; + + if (request_irq(gpio_to_irq(palm27x_ep_gpio), palm27x_interrupt, + IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, + "Headphone jack", NULL)) + goto err_alloc; + + palm27x_snd_device = platform_device_alloc("soc-audio", -1); + if (!palm27x_snd_device) { + ret = -ENOMEM; + goto err_dev; + } + + platform_set_drvdata(palm27x_snd_device, &palm27x_snd_devdata); + palm27x_snd_devdata.dev = &palm27x_snd_device->dev; + ret = platform_device_add(palm27x_snd_device); + + if (ret != 0) + goto put_device; + + return 0; + +put_device: + platform_device_put(palm27x_snd_device); +err_dev: + free_irq(gpio_to_irq(palm27x_ep_gpio), NULL); +err_alloc: + gpio_free(palm27x_ep_gpio); + + return ret; +} + +static void __exit palm27x_asoc_exit(void) +{ + free_irq(gpio_to_irq(palm27x_ep_gpio), NULL); + gpio_free(palm27x_ep_gpio); + platform_device_unregister(palm27x_snd_device); +} + +void __init palm27x_asoc_set_pdata(struct palm27x_asoc_info *data) +{ + palm27x_ep_gpio = data->jack_gpio; +} + +module_init(palm27x_asoc_init); +module_exit(palm27x_asoc_exit); + +/* Module information */ +MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>"); +MODULE_DESCRIPTION("ALSA SoC Palm T|X, T5 and LifeDrive"); +MODULE_LICENSE("GPL"); |