/* * max9877.c -- amp driver for max9877 * * Copyright (C) 2009 Samsung Electronics Co.Ltd * Author: Joonyoung Shim * * 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 #include #include #include #include #include #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 "); MODULE_LICENSE("GPL");