diff options
Diffstat (limited to 'kernel/sound/soc/pxa/spitz.c')
| -rw-r--r-- | kernel/sound/soc/pxa/spitz.c | 346 |
1 files changed, 346 insertions, 0 deletions
diff --git a/kernel/sound/soc/pxa/spitz.c b/kernel/sound/soc/pxa/spitz.c new file mode 100644 index 000000000..461123ad5 --- /dev/null +++ b/kernel/sound/soc/pxa/spitz.c @@ -0,0 +1,346 @@ +/* + * spitz.c -- SoC audio for Sharp SL-Cxx00 models Spitz, Borzoi and Akita + * + * 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. + * + */ + +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/timer.h> +#include <linux/interrupt.h> +#include <linux/platform_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/spitz.h> +#include "../codecs/wm8750.h" +#include "pxa2xx-i2s.h" + +#define SPITZ_HP 0 +#define SPITZ_MIC 1 +#define SPITZ_LINE 2 +#define SPITZ_HEADSET 3 +#define SPITZ_HP_OFF 4 +#define SPITZ_SPK_ON 0 +#define SPITZ_SPK_OFF 1 + + /* audio clock in Hz - rounded from 12.235MHz */ +#define SPITZ_AUDIO_CLOCK 12288000 + +static int spitz_jack_func; +static int spitz_spk_func; +static int spitz_mic_gpio; + +static void spitz_ext_control(struct snd_soc_dapm_context *dapm) +{ + snd_soc_dapm_mutex_lock(dapm); + + if (spitz_spk_func == SPITZ_SPK_ON) + snd_soc_dapm_enable_pin_unlocked(dapm, "Ext Spk"); + else + snd_soc_dapm_disable_pin_unlocked(dapm, "Ext Spk"); + + /* set up jack connection */ + switch (spitz_jack_func) { + case SPITZ_HP: + /* enable and unmute hp jack, disable mic bias */ + snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack"); + snd_soc_dapm_disable_pin_unlocked(dapm, "Mic Jack"); + snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack"); + snd_soc_dapm_enable_pin_unlocked(dapm, "Headphone Jack"); + gpio_set_value(SPITZ_GPIO_MUTE_L, 1); + gpio_set_value(SPITZ_GPIO_MUTE_R, 1); + break; + case SPITZ_MIC: + /* enable mic jack and bias, mute hp */ + snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack"); + snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack"); + snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack"); + snd_soc_dapm_enable_pin_unlocked(dapm, "Mic Jack"); + gpio_set_value(SPITZ_GPIO_MUTE_L, 0); + gpio_set_value(SPITZ_GPIO_MUTE_R, 0); + break; + case SPITZ_LINE: + /* enable line jack, disable mic bias and mute hp */ + snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack"); + snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack"); + snd_soc_dapm_disable_pin_unlocked(dapm, "Mic Jack"); + snd_soc_dapm_enable_pin_unlocked(dapm, "Line Jack"); + gpio_set_value(SPITZ_GPIO_MUTE_L, 0); + gpio_set_value(SPITZ_GPIO_MUTE_R, 0); + break; + case SPITZ_HEADSET: + /* enable and unmute headset jack enable mic bias, mute L hp */ + snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack"); + snd_soc_dapm_enable_pin_unlocked(dapm, "Mic Jack"); + snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack"); + snd_soc_dapm_enable_pin_unlocked(dapm, "Headset Jack"); + gpio_set_value(SPITZ_GPIO_MUTE_L, 0); + gpio_set_value(SPITZ_GPIO_MUTE_R, 1); + break; + case SPITZ_HP_OFF: + + /* jack removed, everything off */ + snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack"); + snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack"); + snd_soc_dapm_disable_pin_unlocked(dapm, "Mic Jack"); + snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack"); + gpio_set_value(SPITZ_GPIO_MUTE_L, 0); + gpio_set_value(SPITZ_GPIO_MUTE_R, 0); + break; + } + + snd_soc_dapm_sync_unlocked(dapm); + + snd_soc_dapm_mutex_unlock(dapm); +} + +static int spitz_startup(struct snd_pcm_substream *substream) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + + /* check the jack status at stream startup */ + spitz_ext_control(&rtd->card->dapm); + + return 0; +} + +static int spitz_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_dai *codec_dai = rtd->codec_dai; + struct snd_soc_dai *cpu_dai = rtd->cpu_dai; + unsigned int clk = 0; + int ret = 0; + + switch (params_rate(params)) { + case 8000: + case 16000: + case 48000: + case 96000: + clk = 12288000; + break; + case 11025: + case 22050: + case 44100: + clk = 11289600; + break; + } + + /* set the codec system clock for DAC and ADC */ + ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk, + SND_SOC_CLOCK_IN); + if (ret < 0) + return ret; + + /* set the I2S system clock as input (unused) */ + ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0, + SND_SOC_CLOCK_IN); + if (ret < 0) + return ret; + + return 0; +} + +static struct snd_soc_ops spitz_ops = { + .startup = spitz_startup, + .hw_params = spitz_hw_params, +}; + +static int spitz_get_jack(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + ucontrol->value.integer.value[0] = spitz_jack_func; + return 0; +} + +static int spitz_set_jack(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_card *card = snd_kcontrol_chip(kcontrol); + + if (spitz_jack_func == ucontrol->value.integer.value[0]) + return 0; + + spitz_jack_func = ucontrol->value.integer.value[0]; + spitz_ext_control(&card->dapm); + return 1; +} + +static int spitz_get_spk(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + ucontrol->value.integer.value[0] = spitz_spk_func; + return 0; +} + +static int spitz_set_spk(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_card *card = snd_kcontrol_chip(kcontrol); + + if (spitz_spk_func == ucontrol->value.integer.value[0]) + return 0; + + spitz_spk_func = ucontrol->value.integer.value[0]; + spitz_ext_control(&card->dapm); + return 1; +} + +static int spitz_mic_bias(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *k, int event) +{ + gpio_set_value_cansleep(spitz_mic_gpio, SND_SOC_DAPM_EVENT_ON(event)); + return 0; +} + +/* spitz machine dapm widgets */ +static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = { + SND_SOC_DAPM_HP("Headphone Jack", NULL), + SND_SOC_DAPM_MIC("Mic Jack", spitz_mic_bias), + SND_SOC_DAPM_SPK("Ext Spk", NULL), + SND_SOC_DAPM_LINE("Line Jack", NULL), + + /* headset is a mic and mono headphone */ + SND_SOC_DAPM_HP("Headset Jack", NULL), +}; + +/* Spitz machine audio_map */ +static const struct snd_soc_dapm_route spitz_audio_map[] = { + + /* headphone connected to LOUT1, ROUT1 */ + {"Headphone Jack", NULL, "LOUT1"}, + {"Headphone Jack", NULL, "ROUT1"}, + + /* headset connected to ROUT1 and LINPUT1 with bias (def below) */ + {"Headset Jack", NULL, "ROUT1"}, + + /* ext speaker connected to LOUT2, ROUT2 */ + {"Ext Spk", NULL , "ROUT2"}, + {"Ext Spk", NULL , "LOUT2"}, + + /* mic is connected to input 1 - with bias */ + {"LINPUT1", NULL, "Mic Bias"}, + {"Mic Bias", NULL, "Mic Jack"}, + + /* line is connected to input 1 - no bias */ + {"LINPUT1", NULL, "Line Jack"}, +}; + +static const char *jack_function[] = {"Headphone", "Mic", "Line", "Headset", + "Off"}; +static const char *spk_function[] = {"On", "Off"}; +static const struct soc_enum spitz_enum[] = { + SOC_ENUM_SINGLE_EXT(5, jack_function), + SOC_ENUM_SINGLE_EXT(2, spk_function), +}; + +static const struct snd_kcontrol_new wm8750_spitz_controls[] = { + SOC_ENUM_EXT("Jack Function", spitz_enum[0], spitz_get_jack, + spitz_set_jack), + SOC_ENUM_EXT("Speaker Function", spitz_enum[1], spitz_get_spk, + spitz_set_spk), +}; + +/* spitz digital audio interface glue - connects codec <--> CPU */ +static struct snd_soc_dai_link spitz_dai = { + .name = "wm8750", + .stream_name = "WM8750", + .cpu_dai_name = "pxa2xx-i2s", + .codec_dai_name = "wm8750-hifi", + .platform_name = "pxa-pcm-audio", + .codec_name = "wm8750.0-001b", + .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | + SND_SOC_DAIFMT_CBS_CFS, + .ops = &spitz_ops, +}; + +/* spitz audio machine driver */ +static struct snd_soc_card snd_soc_spitz = { + .name = "Spitz", + .owner = THIS_MODULE, + .dai_link = &spitz_dai, + .num_links = 1, + + .controls = wm8750_spitz_controls, + .num_controls = ARRAY_SIZE(wm8750_spitz_controls), + .dapm_widgets = wm8750_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(wm8750_dapm_widgets), + .dapm_routes = spitz_audio_map, + .num_dapm_routes = ARRAY_SIZE(spitz_audio_map), + .fully_routed = true, +}; + +static int spitz_probe(struct platform_device *pdev) +{ + struct snd_soc_card *card = &snd_soc_spitz; + int ret; + + if (machine_is_akita()) + spitz_mic_gpio = AKITA_GPIO_MIC_BIAS; + else + spitz_mic_gpio = SPITZ_GPIO_MIC_BIAS; + + ret = gpio_request(spitz_mic_gpio, "MIC GPIO"); + if (ret) + goto err1; + + ret = gpio_direction_output(spitz_mic_gpio, 0); + if (ret) + goto err2; + + card->dev = &pdev->dev; + + ret = snd_soc_register_card(card); + if (ret) { + dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", + ret); + goto err2; + } + + return 0; + +err2: + gpio_free(spitz_mic_gpio); +err1: + return ret; +} + +static int spitz_remove(struct platform_device *pdev) +{ + struct snd_soc_card *card = platform_get_drvdata(pdev); + + snd_soc_unregister_card(card); + gpio_free(spitz_mic_gpio); + return 0; +} + +static struct platform_driver spitz_driver = { + .driver = { + .name = "spitz-audio", + .pm = &snd_soc_pm_ops, + }, + .probe = spitz_probe, + .remove = spitz_remove, +}; + +module_platform_driver(spitz_driver); + +MODULE_AUTHOR("Richard Purdie"); +MODULE_DESCRIPTION("ALSA SoC Spitz"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:spitz-audio"); |