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5cf9da8aac
This does not fully map the power control available within the device but it provides the hooks for routing signals through the device and allows automatic management of the device low power mode. Signed-off-by: Mark Brown <broonie@linaro.org>
189 lines
4.9 KiB
C
189 lines
4.9 KiB
C
/*
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* max9877.c -- amp driver for max9877
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*
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* Copyright (C) 2009 Samsung Electronics Co.Ltd
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* Author: Joonyoung Shim <jy0922.shim@samsung.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/i2c.h>
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#include <linux/regmap.h>
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#include <sound/soc.h>
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#include <sound/tlv.h>
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#include "max9877.h"
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static struct regmap *regmap;
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static struct reg_default max9877_regs[] = {
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{ 0, 0x40 },
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{ 1, 0x00 },
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{ 2, 0x00 },
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{ 3, 0x00 },
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{ 4, 0x49 },
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};
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static const unsigned int max9877_pgain_tlv[] = {
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TLV_DB_RANGE_HEAD(2),
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0, 1, TLV_DB_SCALE_ITEM(0, 900, 0),
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2, 2, TLV_DB_SCALE_ITEM(2000, 0, 0),
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};
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static const unsigned int max9877_output_tlv[] = {
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TLV_DB_RANGE_HEAD(4),
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0, 7, TLV_DB_SCALE_ITEM(-7900, 400, 1),
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8, 15, TLV_DB_SCALE_ITEM(-4700, 300, 0),
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16, 23, TLV_DB_SCALE_ITEM(-2300, 200, 0),
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24, 31, TLV_DB_SCALE_ITEM(-700, 100, 0),
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};
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static const char *max9877_out_mode[] = {
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"INA -> SPK",
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"INA -> HP",
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"INA -> SPK and HP",
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"INB -> SPK",
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"INB -> HP",
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"INB -> SPK and HP",
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"INA + INB -> SPK",
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"INA + INB -> HP",
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"INA + INB -> SPK and HP",
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};
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static const char *max9877_osc_mode[] = {
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"1176KHz",
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"1100KHz",
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"700KHz",
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};
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static const struct soc_enum max9877_enum[] = {
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SOC_ENUM_SINGLE(MAX9877_OUTPUT_MODE, 0, ARRAY_SIZE(max9877_out_mode),
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max9877_out_mode),
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SOC_ENUM_SINGLE(MAX9877_OUTPUT_MODE, MAX9877_OSC_OFFSET,
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ARRAY_SIZE(max9877_osc_mode), max9877_osc_mode),
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};
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static const struct snd_kcontrol_new max9877_controls[] = {
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SOC_SINGLE_TLV("MAX9877 PGAINA Playback Volume",
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MAX9877_INPUT_MODE, 0, 2, 0, max9877_pgain_tlv),
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SOC_SINGLE_TLV("MAX9877 PGAINB Playback Volume",
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MAX9877_INPUT_MODE, 2, 2, 0, max9877_pgain_tlv),
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SOC_SINGLE_TLV("MAX9877 Amp Speaker Playback Volume",
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MAX9877_SPK_VOLUME, 0, 31, 0, max9877_output_tlv),
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SOC_DOUBLE_R_TLV("MAX9877 Amp HP Playback Volume",
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MAX9877_HPL_VOLUME, MAX9877_HPR_VOLUME, 0, 31, 0,
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max9877_output_tlv),
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SOC_SINGLE("MAX9877 INB Stereo Switch",
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MAX9877_INPUT_MODE, 4, 1, 1),
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SOC_SINGLE("MAX9877 INA Stereo Switch",
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MAX9877_INPUT_MODE, 5, 1, 1),
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SOC_SINGLE("MAX9877 Zero-crossing detection Switch",
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MAX9877_INPUT_MODE, 6, 1, 0),
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SOC_SINGLE("MAX9877 Bypass Mode Switch",
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MAX9877_OUTPUT_MODE, 6, 1, 0),
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SOC_ENUM("MAX9877 Output Mode", max9877_enum[0]),
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SOC_ENUM("MAX9877 Oscillator Mode", max9877_enum[1]),
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};
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static const struct snd_soc_dapm_widget max9877_dapm_widgets[] = {
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SND_SOC_DAPM_INPUT("INA1"),
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SND_SOC_DAPM_INPUT("INA2"),
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SND_SOC_DAPM_INPUT("INB1"),
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SND_SOC_DAPM_INPUT("INB2"),
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SND_SOC_DAPM_INPUT("RXIN+"),
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SND_SOC_DAPM_INPUT("RXIN-"),
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SND_SOC_DAPM_PGA("SHDN", MAX9877_OUTPUT_MODE, 7, 1, NULL, 0),
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SND_SOC_DAPM_OUTPUT("OUT+"),
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SND_SOC_DAPM_OUTPUT("OUT-"),
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SND_SOC_DAPM_OUTPUT("HPL"),
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SND_SOC_DAPM_OUTPUT("HPR"),
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};
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static const struct snd_soc_dapm_route max9877_dapm_routes[] = {
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{ "SHDN", NULL, "INA1" },
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{ "SHDN", NULL, "INA2" },
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{ "SHDN", NULL, "INB1" },
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{ "SHDN", NULL, "INB2" },
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{ "OUT+", NULL, "RXIN+" },
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{ "OUT+", NULL, "SHDN" },
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{ "OUT-", NULL, "SHDN" },
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{ "OUT-", NULL, "RXIN-" },
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{ "HPL", NULL, "SHDN" },
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{ "HPR", NULL, "SHDN" },
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};
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static const struct snd_soc_codec_driver max9877_codec = {
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.controls = max9877_controls,
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.num_controls = ARRAY_SIZE(max9877_controls),
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.dapm_widgets = max9877_dapm_widgets,
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.num_dapm_widgets = ARRAY_SIZE(max9877_dapm_widgets),
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.dapm_routes = max9877_dapm_routes,
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.num_dapm_routes = ARRAY_SIZE(max9877_dapm_routes),
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};
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static const struct regmap_config max9877_regmap = {
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.reg_bits = 8,
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.val_bits = 8,
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.reg_defaults = max9877_regs,
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.num_reg_defaults = ARRAY_SIZE(max9877_regs),
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.cache_type = REGCACHE_RBTREE,
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};
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static int max9877_i2c_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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int i;
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regmap = devm_regmap_init_i2c(client, &max9877_regmap);
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if (IS_ERR(regmap))
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return PTR_ERR(regmap);
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/* Ensure the device is in reset state */
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for (i = 0; i < ARRAY_SIZE(max9877_regs); i++)
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regmap_write(regmap, max9877_regs[i].reg, max9877_regs[i].def);
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return snd_soc_register_codec(&client->dev, &max9877_codec, NULL, 0);
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}
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static int max9877_i2c_remove(struct i2c_client *client)
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{
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snd_soc_unregister_codec(&client->dev);
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return 0;
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}
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static const struct i2c_device_id max9877_i2c_id[] = {
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{ "max9877", 0 },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, max9877_i2c_id);
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static struct i2c_driver max9877_i2c_driver = {
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.driver = {
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.name = "max9877",
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.owner = THIS_MODULE,
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},
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.probe = max9877_i2c_probe,
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.remove = max9877_i2c_remove,
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.id_table = max9877_i2c_id,
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};
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module_i2c_driver(max9877_i2c_driver);
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MODULE_DESCRIPTION("ASoC MAX9877 amp driver");
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MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
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MODULE_LICENSE("GPL");
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