| /* |
| * max9877.c -- amp driver for max9877 |
| * |
| * Copyright (C) 2009 Samsung Electronics Co.Ltd |
| * Author: Joonyoung Shim <jy0922.shim@samsung.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. |
| * |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/init.h> |
| #include <linux/i2c.h> |
| #include <linux/regmap.h> |
| #include <sound/soc.h> |
| #include <sound/tlv.h> |
| |
| #include "max9877.h" |
| |
| static struct regmap *regmap; |
| |
| static struct reg_default max9877_regs[] = { |
| { 0, 0x40 }, |
| { 1, 0x00 }, |
| { 2, 0x00 }, |
| { 3, 0x00 }, |
| { 4, 0x49 }, |
| }; |
| |
| static int max9877_get_reg(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| struct soc_mixer_control *mc = |
| (struct soc_mixer_control *)kcontrol->private_value; |
| unsigned int reg = mc->reg; |
| unsigned int shift = mc->shift; |
| unsigned int mask = mc->max; |
| unsigned int invert = mc->invert; |
| unsigned int val; |
| int ret; |
| |
| ret = regmap_read(regmap, reg, &val); |
| if (ret != 0) |
| return ret; |
| |
| ucontrol->value.integer.value[0] = (val >> shift) & mask; |
| |
| if (invert) |
| ucontrol->value.integer.value[0] = |
| mask - ucontrol->value.integer.value[0]; |
| |
| return 0; |
| } |
| |
| static int max9877_set_reg(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| struct soc_mixer_control *mc = |
| (struct soc_mixer_control *)kcontrol->private_value; |
| unsigned int reg = mc->reg; |
| unsigned int shift = mc->shift; |
| unsigned int mask = mc->max; |
| unsigned int invert = mc->invert; |
| unsigned int val = (ucontrol->value.integer.value[0] & mask); |
| bool change; |
| int ret; |
| |
| if (invert) |
| val = mask - val; |
| |
| ret = regmap_update_bits_check(regmap, reg, mask << shift, |
| val << shift, &change); |
| if (ret != 0) |
| return ret; |
| |
| if (change) |
| return 1; |
| else |
| return 0; |
| } |
| |
| static int max9877_get_2reg(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| struct soc_mixer_control *mc = |
| (struct soc_mixer_control *)kcontrol->private_value; |
| unsigned int reg = mc->reg; |
| unsigned int reg2 = mc->rreg; |
| unsigned int shift = mc->shift; |
| unsigned int mask = mc->max; |
| unsigned int val; |
| int ret; |
| |
| ret = regmap_read(regmap, reg, &val); |
| if (ret != 0) |
| return ret; |
| ucontrol->value.integer.value[0] = (val >> shift) & mask; |
| |
| ret = regmap_read(regmap, reg2, &val); |
| if (ret != 0) |
| return ret; |
| ucontrol->value.integer.value[1] = (val >> shift) & mask; |
| |
| return 0; |
| } |
| |
| static int max9877_set_2reg(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| struct soc_mixer_control *mc = |
| (struct soc_mixer_control *)kcontrol->private_value; |
| unsigned int reg = mc->reg; |
| unsigned int reg2 = mc->rreg; |
| unsigned int shift = mc->shift; |
| unsigned int mask = mc->max; |
| unsigned int val = (ucontrol->value.integer.value[0] & mask); |
| unsigned int val2 = (ucontrol->value.integer.value[1] & mask); |
| bool change1, change2; |
| int ret; |
| |
| ret = regmap_update_bits_check(regmap, reg, mask << shift, |
| val << shift, &change1); |
| if (ret != 0) |
| return ret; |
| |
| ret = regmap_update_bits_check(regmap, reg2, mask << shift, |
| val2 << shift, &change2); |
| if (ret != 0) |
| return ret; |
| |
| if (change1 || change2) |
| return 1; |
| else |
| return 0; |
| } |
| |
| static int max9877_get_out_mode(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| unsigned int val; |
| int ret; |
| |
| ret = regmap_read(regmap, MAX9877_OUTPUT_MODE, &val); |
| if (ret != 0) |
| return ret; |
| |
| val &= MAX9877_OUTMODE_MASK; |
| if (val) |
| val--; |
| |
| ucontrol->value.integer.value[0] = val; |
| |
| return 0; |
| } |
| |
| static int max9877_set_out_mode(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| unsigned int val; |
| bool change; |
| int ret; |
| |
| val = ucontrol->value.integer.value[0] + 1; |
| |
| ret = regmap_update_bits_check(regmap, MAX9877_OUTPUT_MODE, |
| MAX9877_OUTMODE_MASK, val, &change); |
| if (ret != 0) |
| return ret; |
| |
| if (change) |
| return 1; |
| else |
| return 0; |
| } |
| |
| static int max9877_get_osc_mode(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| unsigned int val; |
| int ret; |
| |
| ret = regmap_read(regmap, MAX9877_OUTPUT_MODE, &val); |
| if (ret != 0) |
| return ret; |
| |
| val &= MAX9877_OSC_MASK; |
| val >>= MAX9877_OSC_OFFSET; |
| |
| ucontrol->value.integer.value[0] = val; |
| |
| return 0; |
| } |
| |
| static int max9877_set_osc_mode(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| unsigned int val; |
| bool change; |
| int ret; |
| |
| val = ucontrol->value.integer.value[0] << MAX9877_OSC_OFFSET; |
| ret = regmap_update_bits_check(regmap, MAX9877_OUTPUT_MODE, |
| MAX9877_OSC_MASK, val, &change); |
| if (ret != 0) |
| return ret; |
| |
| if (change) |
| return 1; |
| else |
| return 0; |
| } |
| |
| static const unsigned int max9877_pgain_tlv[] = { |
| TLV_DB_RANGE_HEAD(2), |
| 0, 1, TLV_DB_SCALE_ITEM(0, 900, 0), |
| 2, 2, TLV_DB_SCALE_ITEM(2000, 0, 0), |
| }; |
| |
| static const unsigned int max9877_output_tlv[] = { |
| TLV_DB_RANGE_HEAD(4), |
| 0, 7, TLV_DB_SCALE_ITEM(-7900, 400, 1), |
| 8, 15, TLV_DB_SCALE_ITEM(-4700, 300, 0), |
| 16, 23, TLV_DB_SCALE_ITEM(-2300, 200, 0), |
| 24, 31, TLV_DB_SCALE_ITEM(-700, 100, 0), |
| }; |
| |
| static const char *max9877_out_mode[] = { |
| "INA -> SPK", |
| "INA -> HP", |
| "INA -> SPK and HP", |
| "INB -> SPK", |
| "INB -> HP", |
| "INB -> SPK and HP", |
| "INA + INB -> SPK", |
| "INA + INB -> HP", |
| "INA + INB -> SPK and HP", |
| }; |
| |
| static const char *max9877_osc_mode[] = { |
| "1176KHz", |
| "1100KHz", |
| "700KHz", |
| }; |
| |
| static const struct soc_enum max9877_enum[] = { |
| SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(max9877_out_mode), max9877_out_mode), |
| SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(max9877_osc_mode), max9877_osc_mode), |
| }; |
| |
| static const struct snd_kcontrol_new max9877_controls[] = { |
| SOC_SINGLE_EXT_TLV("MAX9877 PGAINA Playback Volume", |
| MAX9877_INPUT_MODE, 0, 2, 0, |
| max9877_get_reg, max9877_set_reg, max9877_pgain_tlv), |
| SOC_SINGLE_EXT_TLV("MAX9877 PGAINB Playback Volume", |
| MAX9877_INPUT_MODE, 2, 2, 0, |
| max9877_get_reg, max9877_set_reg, max9877_pgain_tlv), |
| SOC_SINGLE_EXT_TLV("MAX9877 Amp Speaker Playback Volume", |
| MAX9877_SPK_VOLUME, 0, 31, 0, |
| max9877_get_reg, max9877_set_reg, max9877_output_tlv), |
| SOC_DOUBLE_R_EXT_TLV("MAX9877 Amp HP Playback Volume", |
| MAX9877_HPL_VOLUME, MAX9877_HPR_VOLUME, 0, 31, 0, |
| max9877_get_2reg, max9877_set_2reg, max9877_output_tlv), |
| SOC_SINGLE_EXT("MAX9877 INB Stereo Switch", |
| MAX9877_INPUT_MODE, 4, 1, 1, |
| max9877_get_reg, max9877_set_reg), |
| SOC_SINGLE_EXT("MAX9877 INA Stereo Switch", |
| MAX9877_INPUT_MODE, 5, 1, 1, |
| max9877_get_reg, max9877_set_reg), |
| SOC_SINGLE_EXT("MAX9877 Zero-crossing detection Switch", |
| MAX9877_INPUT_MODE, 6, 1, 0, |
| max9877_get_reg, max9877_set_reg), |
| SOC_SINGLE_EXT("MAX9877 Bypass Mode Switch", |
| MAX9877_OUTPUT_MODE, 6, 1, 0, |
| max9877_get_reg, max9877_set_reg), |
| SOC_SINGLE_EXT("MAX9877 Shutdown Mode Switch", |
| MAX9877_OUTPUT_MODE, 7, 1, 1, |
| max9877_get_reg, max9877_set_reg), |
| SOC_ENUM_EXT("MAX9877 Output Mode", max9877_enum[0], |
| max9877_get_out_mode, max9877_set_out_mode), |
| SOC_ENUM_EXT("MAX9877 Oscillator Mode", max9877_enum[1], |
| max9877_get_osc_mode, max9877_set_osc_mode), |
| }; |
| |
| /* This function is called from ASoC machine driver */ |
| int max9877_add_controls(struct snd_soc_codec *codec) |
| { |
| return snd_soc_add_codec_controls(codec, max9877_controls, |
| ARRAY_SIZE(max9877_controls)); |
| } |
| EXPORT_SYMBOL_GPL(max9877_add_controls); |
| |
| static const struct regmap_config max9877_regmap = { |
| .reg_bits = 8, |
| .val_bits = 8, |
| |
| .reg_defaults = max9877_regs, |
| .num_reg_defaults = ARRAY_SIZE(max9877_regs), |
| .cache_type = REGCACHE_RBTREE, |
| }; |
| |
| static int max9877_i2c_probe(struct i2c_client *client, |
| const struct i2c_device_id *id) |
| { |
| int i; |
| |
| regmap = devm_regmap_init_i2c(client, &max9877_regmap); |
| if (IS_ERR(regmap)) |
| return PTR_ERR(regmap); |
| |
| /* Ensure the device is in reset state */ |
| for (i = 0; i < ARRAY_SIZE(max9877_regs); i++) |
| regmap_write(regmap, max9877_regs[i].reg, max9877_regs[i].def); |
| |
| return 0; |
| } |
| |
| static int max9877_i2c_remove(struct i2c_client *client) |
| { |
| regmap = NULL; |
| |
| return 0; |
| } |
| |
| static const struct i2c_device_id max9877_i2c_id[] = { |
| { "max9877", 0 }, |
| { } |
| }; |
| MODULE_DEVICE_TABLE(i2c, max9877_i2c_id); |
| |
| static struct i2c_driver max9877_i2c_driver = { |
| .driver = { |
| .name = "max9877", |
| .owner = THIS_MODULE, |
| }, |
| .probe = max9877_i2c_probe, |
| .remove = max9877_i2c_remove, |
| .id_table = max9877_i2c_id, |
| }; |
| |
| module_i2c_driver(max9877_i2c_driver); |
| |
| MODULE_DESCRIPTION("ASoC MAX9877 amp driver"); |
| MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>"); |
| MODULE_LICENSE("GPL"); |