| /* |
| * 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/driver.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 <asm/arch/pxa-regs.h> |
| #include <asm/arch/hardware.h> |
| #include <asm/arch/poodle.h> |
| #include <asm/arch/audio.h> |
| |
| #include "../codecs/wm8731.h" |
| #include "pxa2xx-pcm.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) |
| { |
| int spk = 0; |
| |
| /* 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_set_endpoint(codec, "Headphone Jack", 1); |
| } 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_set_endpoint(codec, "Headphone Jack", 0); |
| } |
| |
| if (poodle_spk_func == POODLE_SPK_ON) |
| spk = 1; |
| |
| /* set the enpoints to their new connetion states */ |
| snd_soc_dapm_set_endpoint(codec, "Ext Spk", spk); |
| |
| /* signal a DAPM event */ |
| snd_soc_dapm_sync_endpoints(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 int poodle_shutdown(struct snd_pcm_substream *substream) |
| { |
| struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| struct snd_soc_codec *codec = rtd->socdev->codec; |
| |
| /* 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); |
| return 0; |
| } |
| |
| static struct snd_soc_ops poodle_ops = { |
| .startup = poodle_startup, |
| .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, 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 audio_mapnections to the codec pins */ |
| static const char *audio_map[][3] = { |
| |
| /* 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"}, |
| |
| {NULL, NULL, NULL}, |
| }; |
| |
| 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 snd_kcontrol_new_t 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_set_endpoint(codec, "LLINEIN", 0); |
| snd_soc_dapm_set_endpoint(codec, "RLINEIN", 0); |
| snd_soc_dapm_set_endpoint(codec, "MICIN", 1); |
| |
| /* 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 */ |
| for (i = 0; i < ARRAY_SIZE(wm8731_dapm_widgets); i++) { |
| snd_soc_dapm_new_control(codec, &wm8731_dapm_widgets[i]); |
| } |
| |
| /* Set up poodle specific audio path audio_map */ |
| for (i = 0; audio_map[i][0] != NULL; i++) { |
| snd_soc_dapm_connect_input(codec, audio_map[i][0], |
| audio_map[i][1], audio_map[i][2]); |
| } |
| |
| snd_soc_dapm_sync_endpoints(codec); |
| return 0; |
| } |
| |
| static unsigned int poodle_config_sysclk(struct snd_soc_pcm_runtime *rtd, |
| struct snd_soc_clock_info *info) |
| { |
| if (info->bclk_master & SND_SOC_DAIFMT_CBS_CFS) { |
| /* pxa2xx is i2s master */ |
| switch (info->rate) { |
| case 44100: |
| case 88200: |
| /* configure codec digital filters for 44.1, 88.2 */ |
| rtd->codec_dai->config_sysclk(rtd->codec_dai, info, |
| 11289600); |
| break; |
| default: |
| /* configure codec digital filters for all other rates */ |
| rtd->codec_dai->config_sysclk(rtd->codec_dai, info, |
| POODLE_AUDIO_CLOCK); |
| break; |
| } |
| return rtd->cpu_dai->config_sysclk(rtd->cpu_dai, info, |
| POODLE_AUDIO_CLOCK); |
| } else { |
| /* codec is i2s master - |
| * only configure codec DAI clock and filters */ |
| return rtd->codec_dai->config_sysclk(rtd->codec_dai, info, |
| POODLE_AUDIO_CLOCK); |
| } |
| } |
| |
| /* 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, |
| .config_sysclk = poodle_config_sysclk, |
| }; |
| |
| /* poodle audio machine driver */ |
| static struct snd_soc_machine snd_soc_machine_poodle = { |
| .name = "Poodle", |
| .dai_link = &poodle_dai, |
| .num_links = 1, |
| .ops = &poodle_ops, |
| }; |
| |
| /* poodle audio private data */ |
| static struct wm8731_setup_data poodle_wm8731_setup = { |
| .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"); |