diff options
Diffstat (limited to 'sound/soc/mxs/mxs-evk-adc.c')
| -rw-r--r-- | sound/soc/mxs/mxs-evk-adc.c | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/sound/soc/mxs/mxs-evk-adc.c b/sound/soc/mxs/mxs-evk-adc.c new file mode 100644 index 000000000000..16c1cb4fab96 --- /dev/null +++ b/sound/soc/mxs/mxs-evk-adc.c @@ -0,0 +1,198 @@ +/* + * ASoC driver for Freescale MXS EVK board + * + * Author: Vladislav Buzov <vbuzov@embeddedalley.com> + * + * Copyright 2008-2010 Freescale Semiconductor, Inc. + * Copyright 2008 Embedded Alley Solutions, Inc All Rights Reserved. + */ + +/* + * The code contained herein is licensed under the GNU General Public + * License. You may obtain a copy of the GNU General Public License + * Version 2 or later at the following locations: + * + * http://www.opensource.org/licenses/gpl-license.html + * http://www.gnu.org/copyleft/gpl.html + */ +#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/dma.h> +#include <mach/hardware.h> + +#include "../codecs/mxs-adc-codec.h" +#include "mxs-adc.h" +#include "mxs-pcm.h" + +/* mxs evk machine connections to the codec pins */ +static const struct snd_soc_dapm_route audio_map[] = { + /* HPR/HPL OUT --> Headphone Jack */ + {"Headphone Jack", NULL, "HPR"}, + {"Headphone Jack", NULL, "HPL"}, + + /* SPEAKER OUT --> Ext Speaker */ + {"Ext Spk", NULL, "SPEAKER"}, +}; + +static int mxs_evk_jack_func; +static int mxs_evk_spk_func; + +static const char *jack_function[] = { "off", "on"}; + +static const char *spk_function[] = { "off", "on" }; + + +static const struct soc_enum mxs_evk_enum[] = { + SOC_ENUM_SINGLE_EXT(2, jack_function), + SOC_ENUM_SINGLE_EXT(2, spk_function), +}; + +static int mxs_evk_get_jack(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + ucontrol->value.enumerated.item[0] = mxs_evk_jack_func; + return 0; +} + +static int mxs_evk_set_jack(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); + + if (mxs_evk_jack_func == ucontrol->value.enumerated.item[0]) + return 0; + + mxs_evk_jack_func = ucontrol->value.enumerated.item[0]; + if (mxs_evk_jack_func) + snd_soc_dapm_enable_pin(codec, "Headphone Jack"); + else + snd_soc_dapm_disable_pin(codec, "Headphone Jack"); + + snd_soc_dapm_sync(codec); + return 1; +} + +static int mxs_evk_get_spk(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + ucontrol->value.enumerated.item[0] = mxs_evk_spk_func; + return 0; +} + +static int mxs_evk_set_spk(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); + + if (mxs_evk_spk_func == ucontrol->value.enumerated.item[0]) + return 0; + + mxs_evk_spk_func = ucontrol->value.enumerated.item[0]; + if (mxs_evk_spk_func) + snd_soc_dapm_enable_pin(codec, "Ext Spk"); + else + snd_soc_dapm_disable_pin(codec, "Ext Spk"); + + snd_soc_dapm_sync(codec); + return 1; +} +/* mxs evk card dapm widgets */ +static const struct snd_soc_dapm_widget mxs_evk_dapm_widgets[] = { + SND_SOC_DAPM_SPK("Ext Spk", NULL), + SND_SOC_DAPM_HP("Headphone Jack", NULL), +}; + +static const struct snd_kcontrol_new mxs_evk_controls[] = { + SOC_ENUM_EXT("HP Playback Switch", mxs_evk_enum[0], mxs_evk_get_jack, + mxs_evk_set_jack), + SOC_ENUM_EXT("Speaker Playback Switch", mxs_evk_enum[1], + mxs_evk_get_spk, mxs_evk_set_spk), +}; + +static int mxs_evk_codec_init(struct snd_soc_codec *codec) +{ + int i, ret; + /* Add mxs evk specific controls */ + snd_soc_add_controls(codec, mxs_evk_controls, + ARRAY_SIZE(mxs_evk_controls)); + + /* Add mxs evk specific widgets */ + snd_soc_dapm_new_controls(codec, mxs_evk_dapm_widgets, + ARRAY_SIZE(mxs_evk_dapm_widgets)); + + /* Set up mxs evk specific audio path audio_map */ + snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map)); + + snd_soc_dapm_sync(codec); + /* default on */ + mxs_evk_jack_func = 1; + mxs_evk_spk_func = 1; + + return ret; +} +/* mxs evk dac/adc audio interface glue - connects codec <--> CPU */ +static struct snd_soc_dai_link mxs_evk_codec_dai = { + .name = "MXS ADC/DAC", + .stream_name = "MXS ADC/DAC", + .cpu_dai = &mxs_adc_dai, + .codec_dai = &mxs_codec_dai, + .init = mxs_evk_codec_init, +}; + +/* mxs evk audio machine driver */ +static struct snd_soc_card snd_soc_card_mxs_evk = { + .name = "MXS EVK", + .platform = &mxs_soc_platform, + .dai_link = &mxs_evk_codec_dai, + .num_links = 1, +}; + +/* mxs evk audio subsystem */ +static struct snd_soc_device mxs_evk_snd_devdata = { + .card = &snd_soc_card_mxs_evk, + .codec_dev = &soc_codec_dev_mxs, +}; + +static struct platform_device *mxs_evk_snd_device; + +static int __init mxs_evk_adc_init(void) +{ + int ret = 0; + + mxs_evk_snd_device = platform_device_alloc("soc-audio", 0); + if (!mxs_evk_snd_device) + return -ENOMEM; + + platform_set_drvdata(mxs_evk_snd_device, + &mxs_evk_snd_devdata); + mxs_evk_snd_devdata.dev = &mxs_evk_snd_device->dev; + mxs_evk_snd_device->dev.platform_data = + &mxs_evk_snd_devdata; + + ret = platform_device_add(mxs_evk_snd_device); + if (ret) + platform_device_put(mxs_evk_snd_device); + + return ret; +} + +static void __exit mxs_evk_adc_exit(void) +{ + platform_device_unregister(mxs_evk_snd_device); +} + +module_init(mxs_evk_adc_init); +module_exit(mxs_evk_adc_exit); + +MODULE_AUTHOR("Vladislav Buzov"); +MODULE_DESCRIPTION("MXS EVK board ADC/DAC driver"); +MODULE_LICENSE("GPL"); |