diff options
Diffstat (limited to 'ANDROID_3.4.5/sound/soc/codecs/tpa6130a2.c')
| -rw-r--r-- | ANDROID_3.4.5/sound/soc/codecs/tpa6130a2.c | 505 |
1 files changed, 0 insertions, 505 deletions
diff --git a/ANDROID_3.4.5/sound/soc/codecs/tpa6130a2.c b/ANDROID_3.4.5/sound/soc/codecs/tpa6130a2.c deleted file mode 100644 index 6fe4aa3a..00000000 --- a/ANDROID_3.4.5/sound/soc/codecs/tpa6130a2.c +++ /dev/null @@ -1,505 +0,0 @@ -/* - * ALSA SoC Texas Instruments TPA6130A2 headset stereo amplifier driver - * - * Copyright (C) Nokia Corporation - * - * Author: Peter Ujfalusi <peter.ujfalusi@ti.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. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA - * 02110-1301 USA - */ - -#include <linux/module.h> -#include <linux/errno.h> -#include <linux/device.h> -#include <linux/i2c.h> -#include <linux/gpio.h> -#include <linux/regulator/consumer.h> -#include <linux/slab.h> -#include <sound/tpa6130a2-plat.h> -#include <sound/soc.h> -#include <sound/tlv.h> - -#include "tpa6130a2.h" - -enum tpa_model { - TPA6130A2, - TPA6140A2, -}; - -static struct i2c_client *tpa6130a2_client; - -/* This struct is used to save the context */ -struct tpa6130a2_data { - struct mutex mutex; - unsigned char regs[TPA6130A2_CACHEREGNUM]; - struct regulator *supply; - int power_gpio; - u8 power_state:1; - enum tpa_model id; -}; - -static int tpa6130a2_i2c_read(int reg) -{ - struct tpa6130a2_data *data; - int val; - - BUG_ON(tpa6130a2_client == NULL); - data = i2c_get_clientdata(tpa6130a2_client); - - /* If powered off, return the cached value */ - if (data->power_state) { - val = i2c_smbus_read_byte_data(tpa6130a2_client, reg); - if (val < 0) - dev_err(&tpa6130a2_client->dev, "Read failed\n"); - else - data->regs[reg] = val; - } else { - val = data->regs[reg]; - } - - return val; -} - -static int tpa6130a2_i2c_write(int reg, u8 value) -{ - struct tpa6130a2_data *data; - int val = 0; - - BUG_ON(tpa6130a2_client == NULL); - data = i2c_get_clientdata(tpa6130a2_client); - - if (data->power_state) { - val = i2c_smbus_write_byte_data(tpa6130a2_client, reg, value); - if (val < 0) { - dev_err(&tpa6130a2_client->dev, "Write failed\n"); - return val; - } - } - - /* Either powered on or off, we save the context */ - data->regs[reg] = value; - - return val; -} - -static u8 tpa6130a2_read(int reg) -{ - struct tpa6130a2_data *data; - - BUG_ON(tpa6130a2_client == NULL); - data = i2c_get_clientdata(tpa6130a2_client); - - return data->regs[reg]; -} - -static int tpa6130a2_initialize(void) -{ - struct tpa6130a2_data *data; - int i, ret = 0; - - BUG_ON(tpa6130a2_client == NULL); - data = i2c_get_clientdata(tpa6130a2_client); - - for (i = 1; i < TPA6130A2_REG_VERSION; i++) { - ret = tpa6130a2_i2c_write(i, data->regs[i]); - if (ret < 0) - break; - } - - return ret; -} - -static int tpa6130a2_power(u8 power) -{ - struct tpa6130a2_data *data; - u8 val; - int ret = 0; - - BUG_ON(tpa6130a2_client == NULL); - data = i2c_get_clientdata(tpa6130a2_client); - - mutex_lock(&data->mutex); - if (power == data->power_state) - goto exit; - - if (power) { - ret = regulator_enable(data->supply); - if (ret != 0) { - dev_err(&tpa6130a2_client->dev, - "Failed to enable supply: %d\n", ret); - goto exit; - } - /* Power on */ - if (data->power_gpio >= 0) - gpio_set_value(data->power_gpio, 1); - - data->power_state = 1; - ret = tpa6130a2_initialize(); - if (ret < 0) { - dev_err(&tpa6130a2_client->dev, - "Failed to initialize chip\n"); - if (data->power_gpio >= 0) - gpio_set_value(data->power_gpio, 0); - regulator_disable(data->supply); - data->power_state = 0; - goto exit; - } - } else { - /* set SWS */ - val = tpa6130a2_read(TPA6130A2_REG_CONTROL); - val |= TPA6130A2_SWS; - tpa6130a2_i2c_write(TPA6130A2_REG_CONTROL, val); - - /* Power off */ - if (data->power_gpio >= 0) - gpio_set_value(data->power_gpio, 0); - - ret = regulator_disable(data->supply); - if (ret != 0) { - dev_err(&tpa6130a2_client->dev, - "Failed to disable supply: %d\n", ret); - goto exit; - } - - data->power_state = 0; - } - -exit: - mutex_unlock(&data->mutex); - return ret; -} - -static int tpa6130a2_get_volsw(struct snd_kcontrol *kcontrol, - struct snd_ctl_elem_value *ucontrol) -{ - struct soc_mixer_control *mc = - (struct soc_mixer_control *)kcontrol->private_value; - struct tpa6130a2_data *data; - unsigned int reg = mc->reg; - unsigned int shift = mc->shift; - int max = mc->max; - unsigned int mask = (1 << fls(max)) - 1; - unsigned int invert = mc->invert; - - BUG_ON(tpa6130a2_client == NULL); - data = i2c_get_clientdata(tpa6130a2_client); - - mutex_lock(&data->mutex); - - ucontrol->value.integer.value[0] = - (tpa6130a2_read(reg) >> shift) & mask; - - if (invert) - ucontrol->value.integer.value[0] = - max - ucontrol->value.integer.value[0]; - - mutex_unlock(&data->mutex); - return 0; -} - -static int tpa6130a2_put_volsw(struct snd_kcontrol *kcontrol, - struct snd_ctl_elem_value *ucontrol) -{ - struct soc_mixer_control *mc = - (struct soc_mixer_control *)kcontrol->private_value; - struct tpa6130a2_data *data; - unsigned int reg = mc->reg; - unsigned int shift = mc->shift; - int max = mc->max; - unsigned int mask = (1 << fls(max)) - 1; - unsigned int invert = mc->invert; - unsigned int val = (ucontrol->value.integer.value[0] & mask); - unsigned int val_reg; - - BUG_ON(tpa6130a2_client == NULL); - data = i2c_get_clientdata(tpa6130a2_client); - - if (invert) - val = max - val; - - mutex_lock(&data->mutex); - - val_reg = tpa6130a2_read(reg); - if (((val_reg >> shift) & mask) == val) { - mutex_unlock(&data->mutex); - return 0; - } - - val_reg &= ~(mask << shift); - val_reg |= val << shift; - tpa6130a2_i2c_write(reg, val_reg); - - mutex_unlock(&data->mutex); - - return 1; -} - -/* - * TPA6130 volume. From -59.5 to 4 dB with increasing step size when going - * down in gain. - */ -static const unsigned int tpa6130_tlv[] = { - TLV_DB_RANGE_HEAD(10), - 0, 1, TLV_DB_SCALE_ITEM(-5950, 600, 0), - 2, 3, TLV_DB_SCALE_ITEM(-5000, 250, 0), - 4, 5, TLV_DB_SCALE_ITEM(-4550, 160, 0), - 6, 7, TLV_DB_SCALE_ITEM(-4140, 190, 0), - 8, 9, TLV_DB_SCALE_ITEM(-3650, 120, 0), - 10, 11, TLV_DB_SCALE_ITEM(-3330, 160, 0), - 12, 13, TLV_DB_SCALE_ITEM(-3040, 180, 0), - 14, 20, TLV_DB_SCALE_ITEM(-2710, 110, 0), - 21, 37, TLV_DB_SCALE_ITEM(-1960, 74, 0), - 38, 63, TLV_DB_SCALE_ITEM(-720, 45, 0), -}; - -static const struct snd_kcontrol_new tpa6130a2_controls[] = { - SOC_SINGLE_EXT_TLV("TPA6130A2 Headphone Playback Volume", - TPA6130A2_REG_VOL_MUTE, 0, 0x3f, 0, - tpa6130a2_get_volsw, tpa6130a2_put_volsw, - tpa6130_tlv), -}; - -static const unsigned int tpa6140_tlv[] = { - TLV_DB_RANGE_HEAD(3), - 0, 8, TLV_DB_SCALE_ITEM(-5900, 400, 0), - 9, 16, TLV_DB_SCALE_ITEM(-2500, 200, 0), - 17, 31, TLV_DB_SCALE_ITEM(-1000, 100, 0), -}; - -static const struct snd_kcontrol_new tpa6140a2_controls[] = { - SOC_SINGLE_EXT_TLV("TPA6140A2 Headphone Playback Volume", - TPA6130A2_REG_VOL_MUTE, 1, 0x1f, 0, - tpa6130a2_get_volsw, tpa6130a2_put_volsw, - tpa6140_tlv), -}; - -/* - * Enable or disable channel (left or right) - * The bit number for mute and amplifier are the same per channel: - * bit 6: Right channel - * bit 7: Left channel - * in both registers. - */ -static void tpa6130a2_channel_enable(u8 channel, int enable) -{ - u8 val; - - if (enable) { - /* Enable channel */ - /* Enable amplifier */ - val = tpa6130a2_read(TPA6130A2_REG_CONTROL); - val |= channel; - val &= ~TPA6130A2_SWS; - tpa6130a2_i2c_write(TPA6130A2_REG_CONTROL, val); - - /* Unmute channel */ - val = tpa6130a2_read(TPA6130A2_REG_VOL_MUTE); - val &= ~channel; - tpa6130a2_i2c_write(TPA6130A2_REG_VOL_MUTE, val); - } else { - /* Disable channel */ - /* Mute channel */ - val = tpa6130a2_read(TPA6130A2_REG_VOL_MUTE); - val |= channel; - tpa6130a2_i2c_write(TPA6130A2_REG_VOL_MUTE, val); - - /* Disable amplifier */ - val = tpa6130a2_read(TPA6130A2_REG_CONTROL); - val &= ~channel; - tpa6130a2_i2c_write(TPA6130A2_REG_CONTROL, val); - } -} - -int tpa6130a2_stereo_enable(struct snd_soc_codec *codec, int enable) -{ - int ret = 0; - if (enable) { - ret = tpa6130a2_power(1); - if (ret < 0) - return ret; - tpa6130a2_channel_enable(TPA6130A2_HP_EN_R | TPA6130A2_HP_EN_L, - 1); - } else { - tpa6130a2_channel_enable(TPA6130A2_HP_EN_R | TPA6130A2_HP_EN_L, - 0); - ret = tpa6130a2_power(0); - } - - return ret; -} -EXPORT_SYMBOL_GPL(tpa6130a2_stereo_enable); - -int tpa6130a2_add_controls(struct snd_soc_codec *codec) -{ - struct tpa6130a2_data *data; - - if (tpa6130a2_client == NULL) - return -ENODEV; - - data = i2c_get_clientdata(tpa6130a2_client); - - if (data->id == TPA6140A2) - return snd_soc_add_codec_controls(codec, tpa6140a2_controls, - ARRAY_SIZE(tpa6140a2_controls)); - else - return snd_soc_add_codec_controls(codec, tpa6130a2_controls, - ARRAY_SIZE(tpa6130a2_controls)); -} -EXPORT_SYMBOL_GPL(tpa6130a2_add_controls); - -static int __devinit tpa6130a2_probe(struct i2c_client *client, - const struct i2c_device_id *id) -{ - struct device *dev; - struct tpa6130a2_data *data; - struct tpa6130a2_platform_data *pdata; - const char *regulator; - int ret; - - dev = &client->dev; - - if (client->dev.platform_data == NULL) { - dev_err(dev, "Platform data not set\n"); - dump_stack(); - return -ENODEV; - } - - data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL); - if (data == NULL) { - dev_err(dev, "Can not allocate memory\n"); - return -ENOMEM; - } - - tpa6130a2_client = client; - - i2c_set_clientdata(tpa6130a2_client, data); - - pdata = client->dev.platform_data; - data->power_gpio = pdata->power_gpio; - data->id = id->driver_data; - - mutex_init(&data->mutex); - - /* Set default register values */ - data->regs[TPA6130A2_REG_CONTROL] = TPA6130A2_SWS; - data->regs[TPA6130A2_REG_VOL_MUTE] = TPA6130A2_MUTE_R | - TPA6130A2_MUTE_L; - - if (data->power_gpio >= 0) { - ret = gpio_request(data->power_gpio, "tpa6130a2 enable"); - if (ret < 0) { - dev_err(dev, "Failed to request power GPIO (%d)\n", - data->power_gpio); - goto err_gpio; - } - gpio_direction_output(data->power_gpio, 0); - } - - switch (data->id) { - default: - dev_warn(dev, "Unknown TPA model (%d). Assuming 6130A2\n", - data->id); - case TPA6130A2: - regulator = "Vdd"; - break; - case TPA6140A2: - regulator = "AVdd"; - break; - } - - data->supply = regulator_get(dev, regulator); - if (IS_ERR(data->supply)) { - ret = PTR_ERR(data->supply); - dev_err(dev, "Failed to request supply: %d\n", ret); - goto err_regulator; - } - - ret = tpa6130a2_power(1); - if (ret != 0) - goto err_power; - - - /* Read version */ - ret = tpa6130a2_i2c_read(TPA6130A2_REG_VERSION) & - TPA6130A2_VERSION_MASK; - if ((ret != 1) && (ret != 2)) - dev_warn(dev, "UNTESTED version detected (%d)\n", ret); - - /* Disable the chip */ - ret = tpa6130a2_power(0); - if (ret != 0) - goto err_power; - - return 0; - -err_power: - regulator_put(data->supply); -err_regulator: - if (data->power_gpio >= 0) - gpio_free(data->power_gpio); -err_gpio: - tpa6130a2_client = NULL; - - return ret; -} - -static int __devexit tpa6130a2_remove(struct i2c_client *client) -{ - struct tpa6130a2_data *data = i2c_get_clientdata(client); - - tpa6130a2_power(0); - - if (data->power_gpio >= 0) - gpio_free(data->power_gpio); - - regulator_put(data->supply); - tpa6130a2_client = NULL; - - return 0; -} - -static const struct i2c_device_id tpa6130a2_id[] = { - { "tpa6130a2", TPA6130A2 }, - { "tpa6140a2", TPA6140A2 }, - { } -}; -MODULE_DEVICE_TABLE(i2c, tpa6130a2_id); - -static struct i2c_driver tpa6130a2_i2c_driver = { - .driver = { - .name = "tpa6130a2", - .owner = THIS_MODULE, - }, - .probe = tpa6130a2_probe, - .remove = __devexit_p(tpa6130a2_remove), - .id_table = tpa6130a2_id, -}; - -static int __init tpa6130a2_init(void) -{ - return i2c_add_driver(&tpa6130a2_i2c_driver); -} - -static void __exit tpa6130a2_exit(void) -{ - i2c_del_driver(&tpa6130a2_i2c_driver); -} - -MODULE_AUTHOR("Peter Ujfalusi <peter.ujfalusi@ti.com>"); -MODULE_DESCRIPTION("TPA6130A2 Headphone amplifier driver"); -MODULE_LICENSE("GPL"); - -module_init(tpa6130a2_init); -module_exit(tpa6130a2_exit); |