diff options
Diffstat (limited to 'ANDROID_3.4.5/sound/soc/codecs/wm8728.c')
| -rw-r--r-- | ANDROID_3.4.5/sound/soc/codecs/wm8728.c | 396 |
1 files changed, 0 insertions, 396 deletions
diff --git a/ANDROID_3.4.5/sound/soc/codecs/wm8728.c b/ANDROID_3.4.5/sound/soc/codecs/wm8728.c deleted file mode 100644 index fc3d59e4..00000000 --- a/ANDROID_3.4.5/sound/soc/codecs/wm8728.c +++ /dev/null @@ -1,396 +0,0 @@ -/* - * wm8728.c -- WM8728 ALSA SoC Audio driver - * - * Copyright 2008 Wolfson Microelectronics plc - * - * Author: Mark Brown <broonie@opensource.wolfsonmicro.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - -#include <linux/module.h> -#include <linux/moduleparam.h> -#include <linux/init.h> -#include <linux/delay.h> -#include <linux/pm.h> -#include <linux/i2c.h> -#include <linux/platform_device.h> -#include <linux/spi/spi.h> -#include <linux/slab.h> -#include <linux/of_device.h> -#include <sound/core.h> -#include <sound/pcm.h> -#include <sound/pcm_params.h> -#include <sound/soc.h> -#include <sound/initval.h> -#include <sound/tlv.h> - -#include "wm8728.h" - -/* - * We can't read the WM8728 register space so we cache them instead. - * Note that the defaults here aren't the physical defaults, we latch - * the volume update bits, mute the output and enable infinite zero - * detect. - */ -static const u16 wm8728_reg_defaults[] = { - 0x1ff, - 0x1ff, - 0x001, - 0x100, -}; - -/* codec private data */ -struct wm8728_priv { - enum snd_soc_control_type control_type; -}; - -static const DECLARE_TLV_DB_SCALE(wm8728_tlv, -12750, 50, 1); - -static const struct snd_kcontrol_new wm8728_snd_controls[] = { - -SOC_DOUBLE_R_TLV("Digital Playback Volume", WM8728_DACLVOL, WM8728_DACRVOL, - 0, 255, 0, wm8728_tlv), - -SOC_SINGLE("Deemphasis", WM8728_DACCTL, 1, 1, 0), -}; - -/* - * DAPM controls. - */ -static const struct snd_soc_dapm_widget wm8728_dapm_widgets[] = { -SND_SOC_DAPM_DAC("DAC", "HiFi Playback", SND_SOC_NOPM, 0, 0), -SND_SOC_DAPM_OUTPUT("VOUTL"), -SND_SOC_DAPM_OUTPUT("VOUTR"), -}; - -static const struct snd_soc_dapm_route wm8728_intercon[] = { - {"VOUTL", NULL, "DAC"}, - {"VOUTR", NULL, "DAC"}, -}; - -static int wm8728_mute(struct snd_soc_dai *dai, int mute) -{ - struct snd_soc_codec *codec = dai->codec; - u16 mute_reg = snd_soc_read(codec, WM8728_DACCTL); - - if (mute) - snd_soc_write(codec, WM8728_DACCTL, mute_reg | 1); - else - snd_soc_write(codec, WM8728_DACCTL, mute_reg & ~1); - - return 0; -} - -static int wm8728_hw_params(struct snd_pcm_substream *substream, - struct snd_pcm_hw_params *params, - struct snd_soc_dai *dai) -{ - struct snd_soc_pcm_runtime *rtd = substream->private_data; - struct snd_soc_codec *codec = rtd->codec; - u16 dac = snd_soc_read(codec, WM8728_DACCTL); - - dac &= ~0x18; - - switch (params_format(params)) { - case SNDRV_PCM_FORMAT_S16_LE: - break; - case SNDRV_PCM_FORMAT_S20_3LE: - dac |= 0x10; - break; - case SNDRV_PCM_FORMAT_S24_LE: - dac |= 0x08; - break; - default: - return -EINVAL; - } - - snd_soc_write(codec, WM8728_DACCTL, dac); - - return 0; -} - -static int wm8728_set_dai_fmt(struct snd_soc_dai *codec_dai, - unsigned int fmt) -{ - struct snd_soc_codec *codec = codec_dai->codec; - u16 iface = snd_soc_read(codec, WM8728_IFCTL); - - /* Currently only I2S is supported by the driver, though the - * hardware is more flexible. - */ - switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { - case SND_SOC_DAIFMT_I2S: - iface |= 1; - break; - default: - return -EINVAL; - } - - /* The hardware only support full slave mode */ - switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { - case SND_SOC_DAIFMT_CBS_CFS: - break; - default: - return -EINVAL; - } - - switch (fmt & SND_SOC_DAIFMT_INV_MASK) { - case SND_SOC_DAIFMT_NB_NF: - iface &= ~0x22; - break; - case SND_SOC_DAIFMT_IB_NF: - iface |= 0x20; - iface &= ~0x02; - break; - case SND_SOC_DAIFMT_NB_IF: - iface |= 0x02; - iface &= ~0x20; - break; - case SND_SOC_DAIFMT_IB_IF: - iface |= 0x22; - break; - default: - return -EINVAL; - } - - snd_soc_write(codec, WM8728_IFCTL, iface); - return 0; -} - -static int wm8728_set_bias_level(struct snd_soc_codec *codec, - enum snd_soc_bias_level level) -{ - u16 reg; - int i; - - switch (level) { - case SND_SOC_BIAS_ON: - case SND_SOC_BIAS_PREPARE: - case SND_SOC_BIAS_STANDBY: - if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) { - /* Power everything up... */ - reg = snd_soc_read(codec, WM8728_DACCTL); - snd_soc_write(codec, WM8728_DACCTL, reg & ~0x4); - - /* ..then sync in the register cache. */ - for (i = 0; i < ARRAY_SIZE(wm8728_reg_defaults); i++) - snd_soc_write(codec, i, - snd_soc_read(codec, i)); - } - break; - - case SND_SOC_BIAS_OFF: - reg = snd_soc_read(codec, WM8728_DACCTL); - snd_soc_write(codec, WM8728_DACCTL, reg | 0x4); - break; - } - codec->dapm.bias_level = level; - return 0; -} - -#define WM8728_RATES (SNDRV_PCM_RATE_8000_192000) - -#define WM8728_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ - SNDRV_PCM_FMTBIT_S24_LE) - -static const struct snd_soc_dai_ops wm8728_dai_ops = { - .hw_params = wm8728_hw_params, - .digital_mute = wm8728_mute, - .set_fmt = wm8728_set_dai_fmt, -}; - -static struct snd_soc_dai_driver wm8728_dai = { - .name = "wm8728-hifi", - .playback = { - .stream_name = "Playback", - .channels_min = 2, - .channels_max = 2, - .rates = WM8728_RATES, - .formats = WM8728_FORMATS, - }, - .ops = &wm8728_dai_ops, -}; - -static int wm8728_suspend(struct snd_soc_codec *codec) -{ - wm8728_set_bias_level(codec, SND_SOC_BIAS_OFF); - - return 0; -} - -static int wm8728_resume(struct snd_soc_codec *codec) -{ - wm8728_set_bias_level(codec, SND_SOC_BIAS_STANDBY); - - return 0; -} - -static int wm8728_probe(struct snd_soc_codec *codec) -{ - struct wm8728_priv *wm8728 = snd_soc_codec_get_drvdata(codec); - int ret; - - ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8728->control_type); - if (ret < 0) { - printk(KERN_ERR "wm8728: failed to configure cache I/O: %d\n", - ret); - return ret; - } - - /* power on device */ - wm8728_set_bias_level(codec, SND_SOC_BIAS_STANDBY); - - return ret; -} - -static int wm8728_remove(struct snd_soc_codec *codec) -{ - wm8728_set_bias_level(codec, SND_SOC_BIAS_OFF); - return 0; -} - -static struct snd_soc_codec_driver soc_codec_dev_wm8728 = { - .probe = wm8728_probe, - .remove = wm8728_remove, - .suspend = wm8728_suspend, - .resume = wm8728_resume, - .set_bias_level = wm8728_set_bias_level, - .reg_cache_size = ARRAY_SIZE(wm8728_reg_defaults), - .reg_word_size = sizeof(u16), - .reg_cache_default = wm8728_reg_defaults, - .controls = wm8728_snd_controls, - .num_controls = ARRAY_SIZE(wm8728_snd_controls), - .dapm_widgets = wm8728_dapm_widgets, - .num_dapm_widgets = ARRAY_SIZE(wm8728_dapm_widgets), - .dapm_routes = wm8728_intercon, - .num_dapm_routes = ARRAY_SIZE(wm8728_intercon), -}; - -static const struct of_device_id wm8728_of_match[] = { - { .compatible = "wlf,wm8728", }, - { } -}; -MODULE_DEVICE_TABLE(of, wm8728_of_match); - -#if defined(CONFIG_SPI_MASTER) -static int __devinit wm8728_spi_probe(struct spi_device *spi) -{ - struct wm8728_priv *wm8728; - int ret; - - wm8728 = kzalloc(sizeof(struct wm8728_priv), GFP_KERNEL); - if (wm8728 == NULL) - return -ENOMEM; - - wm8728->control_type = SND_SOC_SPI; - spi_set_drvdata(spi, wm8728); - - ret = snd_soc_register_codec(&spi->dev, - &soc_codec_dev_wm8728, &wm8728_dai, 1); - if (ret < 0) - kfree(wm8728); - return ret; -} - -static int __devexit wm8728_spi_remove(struct spi_device *spi) -{ - snd_soc_unregister_codec(&spi->dev); - kfree(spi_get_drvdata(spi)); - return 0; -} - -static struct spi_driver wm8728_spi_driver = { - .driver = { - .name = "wm8728", - .owner = THIS_MODULE, - .of_match_table = wm8728_of_match, - }, - .probe = wm8728_spi_probe, - .remove = __devexit_p(wm8728_spi_remove), -}; -#endif /* CONFIG_SPI_MASTER */ - -#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) -static __devinit int wm8728_i2c_probe(struct i2c_client *i2c, - const struct i2c_device_id *id) -{ - struct wm8728_priv *wm8728; - int ret; - - wm8728 = kzalloc(sizeof(struct wm8728_priv), GFP_KERNEL); - if (wm8728 == NULL) - return -ENOMEM; - - i2c_set_clientdata(i2c, wm8728); - wm8728->control_type = SND_SOC_I2C; - - ret = snd_soc_register_codec(&i2c->dev, - &soc_codec_dev_wm8728, &wm8728_dai, 1); - if (ret < 0) - kfree(wm8728); - return ret; -} - -static __devexit int wm8728_i2c_remove(struct i2c_client *client) -{ - snd_soc_unregister_codec(&client->dev); - kfree(i2c_get_clientdata(client)); - return 0; -} - -static const struct i2c_device_id wm8728_i2c_id[] = { - { "wm8728", 0 }, - { } -}; -MODULE_DEVICE_TABLE(i2c, wm8728_i2c_id); - -static struct i2c_driver wm8728_i2c_driver = { - .driver = { - .name = "wm8728", - .owner = THIS_MODULE, - .of_match_table = wm8728_of_match, - }, - .probe = wm8728_i2c_probe, - .remove = __devexit_p(wm8728_i2c_remove), - .id_table = wm8728_i2c_id, -}; -#endif - -static int __init wm8728_modinit(void) -{ - int ret = 0; -#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) - ret = i2c_add_driver(&wm8728_i2c_driver); - if (ret != 0) { - printk(KERN_ERR "Failed to register wm8728 I2C driver: %d\n", - ret); - } -#endif -#if defined(CONFIG_SPI_MASTER) - ret = spi_register_driver(&wm8728_spi_driver); - if (ret != 0) { - printk(KERN_ERR "Failed to register wm8728 SPI driver: %d\n", - ret); - } -#endif - return ret; -} -module_init(wm8728_modinit); - -static void __exit wm8728_exit(void) -{ -#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) - i2c_del_driver(&wm8728_i2c_driver); -#endif -#if defined(CONFIG_SPI_MASTER) - spi_unregister_driver(&wm8728_spi_driver); -#endif -} -module_exit(wm8728_exit); - -MODULE_DESCRIPTION("ASoC WM8728 driver"); -MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); -MODULE_LICENSE("GPL"); |