diff options
Diffstat (limited to 'sound/soc/pxa')
| -rw-r--r-- | sound/soc/pxa/corgi.c | 361 |
1 files changed, 361 insertions, 0 deletions
diff --git a/sound/soc/pxa/corgi.c b/sound/soc/pxa/corgi.c new file mode 100644 index 0000000..2b1c6e9 --- /dev/null +++ b/sound/soc/pxa/corgi.c @@ -0,0 +1,361 @@ +/* + * corgi.c -- SoC audio for Corgi + * + * 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. + * + * Revision history + * 30th Nov 2005 Initial 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/scoop.h> +#include <asm/arch/pxa-regs.h> +#include <asm/arch/hardware.h> +#include <asm/arch/corgi.h> +#include <asm/arch/audio.h> + +#include "../codecs/wm8731.h" +#include "pxa2xx-pcm.h" + +#define CORGI_HP 0 +#define CORGI_MIC 1 +#define CORGI_LINE 2 +#define CORGI_HEADSET 3 +#define CORGI_HP_OFF 4 +#define CORGI_SPK_ON 0 +#define CORGI_SPK_OFF 1 + + /* audio clock in Hz - rounded from 12.235MHz */ +#define CORGI_AUDIO_CLOCK 12288000 + +static int corgi_jack_func; +static int corgi_spk_func; + +static void corgi_ext_control(struct snd_soc_codec *codec) +{ + int spk = 0, mic = 0, line = 0, hp = 0, hs = 0; + + /* set up jack connection */ + switch (corgi_jack_func) { + case CORGI_HP: + hp = 1; + /* set = unmute headphone */ + set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_L); + set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_R); + break; + case CORGI_MIC: + mic = 1; + /* reset = mute headphone */ + reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_L); + reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_R); + break; + case CORGI_LINE: + line = 1; + reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_L); + reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_R); + break; + case CORGI_HEADSET: + hs = 1; + mic = 1; + reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_L); + set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_R); + break; + } + + if (corgi_spk_func == CORGI_SPK_ON) + spk = 1; + + /* set the enpoints to their new connetion states */ + snd_soc_dapm_set_endpoint(codec, "Ext Spk", spk); + snd_soc_dapm_set_endpoint(codec, "Mic Jack", mic); + snd_soc_dapm_set_endpoint(codec, "Line Jack", line); + snd_soc_dapm_set_endpoint(codec, "Headphone Jack", hp); + snd_soc_dapm_set_endpoint(codec, "Headset Jack", hs); + + /* signal a DAPM event */ + snd_soc_dapm_sync_endpoints(codec); +} + +static int corgi_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 */ + corgi_ext_control(codec); + return 0; +} + +/* we need to unmute the HP at shutdown as the mute burns power on corgi */ +static int corgi_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 */ + set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_L); + set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_R); + return 0; +} + +static struct snd_soc_ops corgi_ops = { + .startup = corgi_startup, + .shutdown = corgi_shutdown, +}; + +static int corgi_get_jack(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + ucontrol->value.integer.value[0] = corgi_jack_func; + return 0; +} + +static int corgi_set_jack(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); + + if (corgi_jack_func == ucontrol->value.integer.value[0]) + return 0; + + corgi_jack_func = ucontrol->value.integer.value[0]; + corgi_ext_control(codec); + return 1; +} + +static int corgi_get_spk(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + ucontrol->value.integer.value[0] = corgi_spk_func; + return 0; +} + +static int corgi_set_spk(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); + + if (corgi_spk_func == ucontrol->value.integer.value[0]) + return 0; + + corgi_spk_func = ucontrol->value.integer.value[0]; + corgi_ext_control(codec); + return 1; +} + +static int corgi_amp_event(struct snd_soc_dapm_widget *w, int event) +{ + if (SND_SOC_DAPM_EVENT_ON(event)) + set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_APM_ON); + else + reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_APM_ON); + + return 0; +} + +static int corgi_mic_event(struct snd_soc_dapm_widget *w, int event) +{ + if (SND_SOC_DAPM_EVENT_ON(event)) + set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MIC_BIAS); + else + reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MIC_BIAS); + + return 0; +} + +/* corgi machine dapm widgets */ +static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = { +SND_SOC_DAPM_HP("Headphone Jack", NULL), +SND_SOC_DAPM_MIC("Mic Jack", corgi_mic_event), +SND_SOC_DAPM_SPK("Ext Spk", corgi_amp_event), +SND_SOC_DAPM_LINE("Line Jack", NULL), +SND_SOC_DAPM_HP("Headset Jack", NULL), +}; + +/* Corgi machine audio map (connections to the codec pins) */ +static const char *audio_map[][3] = { + + /* headset Jack - in = micin, out = LHPOUT*/ + {"Headset Jack", NULL, "LHPOUT"}, + + /* 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"}, + + /* mic is connected to MICIN (via right channel of headphone jack) */ + {"MICIN", NULL, "Mic Jack"}, + + /* Same as the above but no mic bias for line signals */ + {"MICIN", NULL, "Line Jack"}, + + {NULL, NULL, NULL}, +}; + +static const char *jack_function[] = {"Headphone", "Mic", "Line", "Headset", + "Off"}; +static const char *spk_function[] = {"On", "Off"}; +static const struct soc_enum corgi_enum[] = { + SOC_ENUM_SINGLE_EXT(5, jack_function), + SOC_ENUM_SINGLE_EXT(2, spk_function), +}; + +static const struct snd_kcontrol_new wm8731_corgi_controls[] = { + SOC_ENUM_EXT("Jack Function", corgi_enum[0], corgi_get_jack, + corgi_set_jack), + SOC_ENUM_EXT("Speaker Function", corgi_enum[1], corgi_get_spk, + corgi_set_spk), +}; + +/* + * Logic for a wm8731 as connected on a Sharp SL-C7x0 Device + */ +static int corgi_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); + + /* Add corgi specific controls */ + for (i = 0; i < ARRAY_SIZE(wm8731_corgi_controls); i++) { + err = snd_ctl_add(codec->card, + snd_soc_cnew(&wm8731_corgi_controls[i],codec, NULL)); + if (err < 0) + return err; + } + + /* Add corgi specific widgets */ + for(i = 0; i < ARRAY_SIZE(wm8731_dapm_widgets); i++) { + snd_soc_dapm_new_control(codec, &wm8731_dapm_widgets[i]); + } + + /* Set up corgi 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 corgi_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, + CORGI_AUDIO_CLOCK); + break; + } + /* config pxa i2s as master */ + return rtd->cpu_dai->config_sysclk(rtd->cpu_dai, info, + CORGI_AUDIO_CLOCK); + } else { + /* codec is i2s master - + * only configure codec DAI clock and filters */ + return rtd->codec_dai->config_sysclk(rtd->codec_dai, info, + CORGI_AUDIO_CLOCK); + } +} + +/* corgi digital audio interface glue - connects codec <--> CPU */ +static struct snd_soc_dai_link corgi_dai = { + .name = "WM8731", + .stream_name = "WM8731", + .cpu_dai = &pxa_i2s_dai, + .codec_dai = &wm8731_dai, + .init = corgi_wm8731_init, + .config_sysclk = corgi_config_sysclk, +}; + +/* corgi audio machine driver */ +static struct snd_soc_machine snd_soc_machine_corgi = { + .name = "Corgi", + .dai_link = &corgi_dai, + .num_links = 1, + .ops = &corgi_ops, +}; + +/* corgi audio private data */ +static struct wm8731_setup_data corgi_wm8731_setup = { + .i2c_address = 0x1b, +}; + +/* corgi audio subsystem */ +static struct snd_soc_device corgi_snd_devdata = { + .machine = &snd_soc_machine_corgi, + .platform = &pxa2xx_soc_platform, + .codec_dev = &soc_codec_dev_wm8731, + .codec_data = &corgi_wm8731_setup, +}; + +static struct platform_device *corgi_snd_device; + +static int __init corgi_init(void) +{ + int ret; + + if (!(machine_is_corgi() || machine_is_shepherd() || machine_is_husky())) + return -ENODEV; + + corgi_snd_device = platform_device_alloc("soc-audio", -1); + if (!corgi_snd_device) + return -ENOMEM; + + platform_set_drvdata(corgi_snd_device, &corgi_snd_devdata); + corgi_snd_devdata.dev = &corgi_snd_device->dev; + ret = platform_device_add(corgi_snd_device); + + if (ret) + platform_device_put(corgi_snd_device); + + return ret; +} + +static void __exit corgi_exit(void) +{ + platform_device_unregister(corgi_snd_device); +} + +module_init(corgi_init); +module_exit(corgi_exit); + +/* Module information */ +MODULE_AUTHOR("Richard Purdie"); +MODULE_DESCRIPTION("ALSA SoC Corgi"); +MODULE_LICENSE("GPL"); |