| /* |
| * poodle.c -- SoC audio for Poodle |
| * |
| * Copyright 2005 Wolfson Microelectronics PLC. |
| * Copyright 2005 Openedhand Ltd. |
| * |
| * Authors: Liam Girdwood <liam.girdwood@wolfsonmicro.com> |
| * 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 <sound/core.h> |
| #include <sound/pcm.h> |
| #include <sound/soc.h> |
| #include <sound/soc-dapm.h> |
| |
| #include <asm/mach-types.h> |
| #include <asm/hardware/locomo.h> |
| #include <mach/pxa-regs.h> |
| #include <mach/hardware.h> |
| #include <mach/poodle.h> |
| #include <mach/audio.h> |
| |
| #include "../codecs/wm8731.h" |
| #include "pxa2xx-pcm.h" |
| #include "pxa2xx-i2s.h" |
| |
| #define POODLE_HP 1 |
| #define POODLE_HP_OFF 0 |
| #define POODLE_SPK_ON 1 |
| #define POODLE_SPK_OFF 0 |
| |
| /* audio clock in Hz - rounded from 12.235MHz */ |
| #define POODLE_AUDIO_CLOCK 12288000 |
| |
| static int poodle_jack_func; |
| static int poodle_spk_func; |
| |
| static void poodle_ext_control(struct snd_soc_codec *codec) |
| { |
| /* set up jack connection */ |
| if (poodle_jack_func == POODLE_HP) { |
| /* set = unmute headphone */ |
| locomo_gpio_write(&poodle_locomo_device.dev, |
| POODLE_LOCOMO_GPIO_MUTE_L, 1); |
| locomo_gpio_write(&poodle_locomo_device.dev, |
| POODLE_LOCOMO_GPIO_MUTE_R, 1); |
| snd_soc_dapm_enable_pin(codec, "Headphone Jack"); |
| } else { |
| locomo_gpio_write(&poodle_locomo_device.dev, |
| POODLE_LOCOMO_GPIO_MUTE_L, 0); |
| locomo_gpio_write(&poodle_locomo_device.dev, |
| POODLE_LOCOMO_GPIO_MUTE_R, 0); |
| snd_soc_dapm_disable_pin(codec, "Headphone Jack"); |
| } |
| |
| /* set the enpoints to their new connetion states */ |
| if (poodle_spk_func == POODLE_SPK_ON) |
| snd_soc_dapm_enable_pin(codec, "Ext Spk"); |
| else |
| snd_soc_dapm_disable_pin(codec, "Ext Spk"); |
| |
| /* signal a DAPM event */ |
| snd_soc_dapm_sync(codec); |
| } |
| |
| static int poodle_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 */ |
| poodle_ext_control(codec); |
| return 0; |
| } |
| |
| /* we need to unmute the HP at shutdown as the mute burns power on poodle */ |
| static void poodle_shutdown(struct snd_pcm_substream *substream) |
| { |
| /* set = unmute headphone */ |
| locomo_gpio_write(&poodle_locomo_device.dev, |
| POODLE_LOCOMO_GPIO_MUTE_L, 1); |
| locomo_gpio_write(&poodle_locomo_device.dev, |
| POODLE_LOCOMO_GPIO_MUTE_R, 1); |
| } |
| |
| static int poodle_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->dai->codec_dai; |
| struct snd_soc_dai *cpu_dai = rtd->dai->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 codec DAI configuration */ |
| ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S | |
| SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS); |
| if (ret < 0) |
| return ret; |
| |
| /* set cpu DAI configuration */ |
| ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S | |
| SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS); |
| if (ret < 0) |
| return ret; |
| |
| /* set the codec system clock for DAC and ADC */ |
| ret = snd_soc_dai_set_sysclk(codec_dai, WM8731_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 poodle_ops = { |
| .startup = poodle_startup, |
| .hw_params = poodle_hw_params, |
| .shutdown = poodle_shutdown, |
| }; |
| |
| static int poodle_get_jack(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| ucontrol->value.integer.value[0] = poodle_jack_func; |
| return 0; |
| } |
| |
| static int poodle_set_jack(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
| |
| if (poodle_jack_func == ucontrol->value.integer.value[0]) |
| return 0; |
| |
| poodle_jack_func = ucontrol->value.integer.value[0]; |
| poodle_ext_control(codec); |
| return 1; |
| } |
| |
| static int poodle_get_spk(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| ucontrol->value.integer.value[0] = poodle_spk_func; |
| return 0; |
| } |
| |
| static int poodle_set_spk(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
| |
| if (poodle_spk_func == ucontrol->value.integer.value[0]) |
| return 0; |
| |
| poodle_spk_func = ucontrol->value.integer.value[0]; |
| poodle_ext_control(codec); |
| return 1; |
| } |
| |
| static int poodle_amp_event(struct snd_soc_dapm_widget *w, |
| struct snd_kcontrol *k, int event) |
| { |
| if (SND_SOC_DAPM_EVENT_ON(event)) |
| locomo_gpio_write(&poodle_locomo_device.dev, |
| POODLE_LOCOMO_GPIO_AMP_ON, 0); |
| else |
| locomo_gpio_write(&poodle_locomo_device.dev, |
| POODLE_LOCOMO_GPIO_AMP_ON, 1); |
| |
| return 0; |
| } |
| |
| /* poodle machine dapm widgets */ |
| static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = { |
| SND_SOC_DAPM_HP("Headphone Jack", NULL), |
| SND_SOC_DAPM_SPK("Ext Spk", poodle_amp_event), |
| }; |
| |
| /* Corgi machine connections to the codec pins */ |
| static const struct snd_soc_dapm_route audio_map[] = { |
| |
| /* headphone connected to LHPOUT1, RHPOUT1 */ |
| {"Headphone Jack", NULL, "LHPOUT"}, |
| {"Headphone Jack", NULL, "RHPOUT"}, |
| |
| /* speaker connected to LOUT, ROUT */ |
| {"Ext Spk", NULL, "ROUT"}, |
| {"Ext Spk", NULL, "LOUT"}, |
| }; |
| |
| static const char *jack_function[] = {"Off", "Headphone"}; |
| static const char *spk_function[] = {"Off", "On"}; |
| static const struct soc_enum poodle_enum[] = { |
| SOC_ENUM_SINGLE_EXT(2, jack_function), |
| SOC_ENUM_SINGLE_EXT(2, spk_function), |
| }; |
| |
| static const struct snd_kcontrol_new wm8731_poodle_controls[] = { |
| SOC_ENUM_EXT("Jack Function", poodle_enum[0], poodle_get_jack, |
| poodle_set_jack), |
| SOC_ENUM_EXT("Speaker Function", poodle_enum[1], poodle_get_spk, |
| poodle_set_spk), |
| }; |
| |
| /* |
| * Logic for a wm8731 as connected on a Sharp SL-C7x0 Device |
| */ |
| static int poodle_wm8731_init(struct snd_soc_codec *codec) |
| { |
| int i, err; |
| |
| snd_soc_dapm_disable_pin(codec, "LLINEIN"); |
| snd_soc_dapm_disable_pin(codec, "RLINEIN"); |
| snd_soc_dapm_enable_pin(codec, "MICIN"); |
| |
| /* Add poodle specific controls */ |
| for (i = 0; i < ARRAY_SIZE(wm8731_poodle_controls); i++) { |
| err = snd_ctl_add(codec->card, |
| snd_soc_cnew(&wm8731_poodle_controls[i], codec, NULL)); |
| if (err < 0) |
| return err; |
| } |
| |
| /* Add poodle specific widgets */ |
| snd_soc_dapm_new_controls(codec, wm8731_dapm_widgets, |
| ARRAY_SIZE(wm8731_dapm_widgets)); |
| |
| /* Set up poodle specific audio path audio_map */ |
| snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map)); |
| |
| snd_soc_dapm_sync(codec); |
| return 0; |
| } |
| |
| /* poodle digital audio interface glue - connects codec <--> CPU */ |
| static struct snd_soc_dai_link poodle_dai = { |
| .name = "WM8731", |
| .stream_name = "WM8731", |
| .cpu_dai = &pxa_i2s_dai, |
| .codec_dai = &wm8731_dai, |
| .init = poodle_wm8731_init, |
| .ops = &poodle_ops, |
| }; |
| |
| /* poodle audio machine driver */ |
| static struct snd_soc_machine snd_soc_machine_poodle = { |
| .name = "Poodle", |
| .dai_link = &poodle_dai, |
| .num_links = 1, |
| }; |
| |
| /* poodle audio private data */ |
| static struct wm8731_setup_data poodle_wm8731_setup = { |
| .i2c_bus = 0, |
| .i2c_address = 0x1b, |
| }; |
| |
| /* poodle audio subsystem */ |
| static struct snd_soc_device poodle_snd_devdata = { |
| .machine = &snd_soc_machine_poodle, |
| .platform = &pxa2xx_soc_platform, |
| .codec_dev = &soc_codec_dev_wm8731, |
| .codec_data = &poodle_wm8731_setup, |
| }; |
| |
| static struct platform_device *poodle_snd_device; |
| |
| static int __init poodle_init(void) |
| { |
| int ret; |
| |
| if (!machine_is_poodle()) |
| return -ENODEV; |
| |
| locomo_gpio_set_dir(&poodle_locomo_device.dev, |
| POODLE_LOCOMO_GPIO_AMP_ON, 0); |
| /* should we mute HP at startup - burning power ?*/ |
| locomo_gpio_set_dir(&poodle_locomo_device.dev, |
| POODLE_LOCOMO_GPIO_MUTE_L, 0); |
| locomo_gpio_set_dir(&poodle_locomo_device.dev, |
| POODLE_LOCOMO_GPIO_MUTE_R, 0); |
| |
| poodle_snd_device = platform_device_alloc("soc-audio", -1); |
| if (!poodle_snd_device) |
| return -ENOMEM; |
| |
| platform_set_drvdata(poodle_snd_device, &poodle_snd_devdata); |
| poodle_snd_devdata.dev = &poodle_snd_device->dev; |
| ret = platform_device_add(poodle_snd_device); |
| |
| if (ret) |
| platform_device_put(poodle_snd_device); |
| |
| return ret; |
| } |
| |
| static void __exit poodle_exit(void) |
| { |
| platform_device_unregister(poodle_snd_device); |
| } |
| |
| module_init(poodle_init); |
| module_exit(poodle_exit); |
| |
| /* Module information */ |
| MODULE_AUTHOR("Richard Purdie"); |
| MODULE_DESCRIPTION("ALSA SoC Poodle"); |
| MODULE_LICENSE("GPL"); |