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- // SPDX-License-Identifier: GPL-2.0
- // Copyright (c) 2019 MediaTek Inc.
- #include <linux/module.h>
- #include <linux/kernel.h>
- #include <linux/err.h>
- #include <linux/i2c.h>
- #include <linux/pm_runtime.h>
- #include <linux/delay.h>
- #include <sound/soc.h>
- #include <sound/tlv.h>
- #include <sound/pcm_params.h>
- #include "mt6660.h"
- struct reg_size_table {
- u32 addr;
- u8 size;
- };
- static const struct reg_size_table mt6660_reg_size_table[] = {
- { MT6660_REG_HPF1_COEF, 4 },
- { MT6660_REG_HPF2_COEF, 4 },
- { MT6660_REG_TDM_CFG3, 2 },
- { MT6660_REG_RESV17, 2 },
- { MT6660_REG_RESV23, 2 },
- { MT6660_REG_SIGMAX, 2 },
- { MT6660_REG_DEVID, 2 },
- { MT6660_REG_HCLIP_CTRL, 2 },
- { MT6660_REG_DA_GAIN, 2 },
- };
- static int mt6660_get_reg_size(uint32_t addr)
- {
- int i;
- for (i = 0; i < ARRAY_SIZE(mt6660_reg_size_table); i++) {
- if (mt6660_reg_size_table[i].addr == addr)
- return mt6660_reg_size_table[i].size;
- }
- return 1;
- }
- static int mt6660_reg_write(void *context, unsigned int reg, unsigned int val)
- {
- struct mt6660_chip *chip = context;
- int size = mt6660_get_reg_size(reg);
- u8 reg_data[4];
- int i;
- for (i = 0; i < size; i++)
- reg_data[size - i - 1] = (val >> (8 * i)) & 0xff;
- return i2c_smbus_write_i2c_block_data(chip->i2c, reg, size, reg_data);
- }
- static int mt6660_reg_read(void *context, unsigned int reg, unsigned int *val)
- {
- struct mt6660_chip *chip = context;
- int size = mt6660_get_reg_size(reg);
- int i, ret;
- u8 data[4];
- u32 reg_data = 0;
- ret = i2c_smbus_read_i2c_block_data(chip->i2c, reg, size, data);
- if (ret < 0)
- return ret;
- for (i = 0; i < size; i++) {
- reg_data <<= 8;
- reg_data |= data[i];
- }
- *val = reg_data;
- return 0;
- }
- static const struct regmap_config mt6660_regmap_config = {
- .reg_bits = 8,
- .val_bits = 32,
- .reg_write = mt6660_reg_write,
- .reg_read = mt6660_reg_read,
- };
- static int mt6660_codec_dac_event(struct snd_soc_dapm_widget *w,
- struct snd_kcontrol *kcontrol, int event)
- {
- if (event == SND_SOC_DAPM_POST_PMU)
- usleep_range(1000, 1100);
- return 0;
- }
- static int mt6660_codec_classd_event(struct snd_soc_dapm_widget *w,
- struct snd_kcontrol *kcontrol, int event)
- {
- struct snd_soc_component *component =
- snd_soc_dapm_to_component(w->dapm);
- int ret;
- switch (event) {
- case SND_SOC_DAPM_PRE_PMU:
- dev_dbg(component->dev,
- "%s: before classd turn on\n", __func__);
- /* config to adaptive mode */
- ret = snd_soc_component_update_bits(component,
- MT6660_REG_BST_CTRL, 0x03, 0x03);
- if (ret < 0) {
- dev_err(component->dev, "config mode adaptive fail\n");
- return ret;
- }
- break;
- case SND_SOC_DAPM_POST_PMU:
- /* voltage sensing enable */
- ret = snd_soc_component_update_bits(component,
- MT6660_REG_RESV7, 0x04, 0x04);
- if (ret < 0) {
- dev_err(component->dev,
- "enable voltage sensing fail\n");
- return ret;
- }
- dev_dbg(component->dev, "Amp on\n");
- break;
- case SND_SOC_DAPM_PRE_PMD:
- dev_dbg(component->dev, "Amp off\n");
- /* voltage sensing disable */
- ret = snd_soc_component_update_bits(component,
- MT6660_REG_RESV7, 0x04, 0x00);
- if (ret < 0) {
- dev_err(component->dev,
- "disable voltage sensing fail\n");
- return ret;
- }
- /* pop-noise improvement 1 */
- ret = snd_soc_component_update_bits(component,
- MT6660_REG_RESV10, 0x10, 0x10);
- if (ret < 0) {
- dev_err(component->dev,
- "pop-noise improvement 1 fail\n");
- return ret;
- }
- break;
- case SND_SOC_DAPM_POST_PMD:
- dev_dbg(component->dev,
- "%s: after classd turn off\n", __func__);
- /* pop-noise improvement 2 */
- ret = snd_soc_component_update_bits(component,
- MT6660_REG_RESV10, 0x10, 0x00);
- if (ret < 0) {
- dev_err(component->dev,
- "pop-noise improvement 2 fail\n");
- return ret;
- }
- /* config to off mode */
- ret = snd_soc_component_update_bits(component,
- MT6660_REG_BST_CTRL, 0x03, 0x00);
- if (ret < 0) {
- dev_err(component->dev, "config mode off fail\n");
- return ret;
- }
- break;
- }
- return 0;
- }
- static const struct snd_soc_dapm_widget mt6660_component_dapm_widgets[] = {
- SND_SOC_DAPM_DAC_E("DAC", NULL, MT6660_REG_PLL_CFG1,
- 0, 1, mt6660_codec_dac_event, SND_SOC_DAPM_POST_PMU),
- SND_SOC_DAPM_ADC("VI ADC", NULL, SND_SOC_NOPM, 0, 0),
- SND_SOC_DAPM_PGA("PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
- SND_SOC_DAPM_OUT_DRV_E("ClassD", MT6660_REG_SYSTEM_CTRL, 2, 0,
- NULL, 0, mt6660_codec_classd_event,
- SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
- SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD),
- SND_SOC_DAPM_OUTPUT("OUTP"),
- SND_SOC_DAPM_OUTPUT("OUTN"),
- };
- static const struct snd_soc_dapm_route mt6660_component_dapm_routes[] = {
- { "DAC", NULL, "aif_playback" },
- { "PGA", NULL, "DAC" },
- { "ClassD", NULL, "PGA" },
- { "OUTP", NULL, "ClassD" },
- { "OUTN", NULL, "ClassD" },
- { "VI ADC", NULL, "ClassD" },
- { "aif_capture", NULL, "VI ADC" },
- };
- static int mt6660_component_get_volsw(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_value *ucontrol)
- {
- struct snd_soc_component *component =
- snd_soc_kcontrol_component(kcontrol);
- struct mt6660_chip *chip = (struct mt6660_chip *)
- snd_soc_component_get_drvdata(component);
- ucontrol->value.integer.value[0] = chip->chip_rev & 0x0f;
- return 0;
- }
- static const DECLARE_TLV_DB_SCALE(vol_ctl_tlv, -1155, 5, 0);
- static const struct snd_kcontrol_new mt6660_component_snd_controls[] = {
- SOC_SINGLE_TLV("Digital Volume", MT6660_REG_VOL_CTRL, 0, 255,
- 1, vol_ctl_tlv),
- SOC_SINGLE("Hard Clip Switch", MT6660_REG_HCLIP_CTRL, 8, 1, 0),
- SOC_SINGLE("Clip Switch", MT6660_REG_SPS_CTRL, 0, 1, 0),
- SOC_SINGLE("Boost Mode", MT6660_REG_BST_CTRL, 0, 3, 0),
- SOC_SINGLE("DRE Switch", MT6660_REG_DRE_CTRL, 0, 1, 0),
- SOC_SINGLE("DC Protect Switch", MT6660_REG_DC_PROTECT_CTRL, 3, 1, 0),
- SOC_SINGLE("Data Output Left Channel Selection",
- MT6660_REG_DATAO_SEL, 3, 7, 0),
- SOC_SINGLE("Data Output Right Channel Selection",
- MT6660_REG_DATAO_SEL, 0, 7, 0),
- SOC_SINGLE_EXT("T0 SEL", MT6660_REG_CALI_T0, 0, 7, 0,
- snd_soc_get_volsw, NULL),
- SOC_SINGLE_EXT("Chip Rev", MT6660_REG_DEVID, 8, 15, 0,
- mt6660_component_get_volsw, NULL),
- };
- static int _mt6660_chip_power_on(struct mt6660_chip *chip, int on_off)
- {
- return regmap_write_bits(chip->regmap, MT6660_REG_SYSTEM_CTRL,
- 0x01, on_off ? 0x00 : 0x01);
- }
- struct reg_table {
- uint32_t addr;
- uint32_t mask;
- uint32_t val;
- };
- static const struct reg_table mt6660_setting_table[] = {
- { 0x20, 0x80, 0x00 },
- { 0x30, 0x01, 0x00 },
- { 0x50, 0x1c, 0x04 },
- { 0xB1, 0x0c, 0x00 },
- { 0xD3, 0x03, 0x03 },
- { 0xE0, 0x01, 0x00 },
- { 0x98, 0x44, 0x04 },
- { 0xB9, 0xff, 0x82 },
- { 0xB7, 0x7777, 0x7273 },
- { 0xB6, 0x07, 0x03 },
- { 0x6B, 0xe0, 0x20 },
- { 0x07, 0xff, 0x70 },
- { 0xBB, 0xff, 0x20 },
- { 0x69, 0xff, 0x40 },
- { 0xBD, 0xffff, 0x17f8 },
- { 0x70, 0xff, 0x15 },
- { 0x7C, 0xff, 0x00 },
- { 0x46, 0xff, 0x1d },
- { 0x1A, 0xffffffff, 0x7fdb7ffe },
- { 0x1B, 0xffffffff, 0x7fdb7ffe },
- { 0x51, 0xff, 0x58 },
- { 0xA2, 0xff, 0xce },
- { 0x33, 0xffff, 0x7fff },
- { 0x4C, 0xffff, 0x0116 },
- { 0x16, 0x1800, 0x0800 },
- { 0x68, 0x1f, 0x07 },
- };
- static int mt6660_component_setting(struct snd_soc_component *component)
- {
- struct mt6660_chip *chip = snd_soc_component_get_drvdata(component);
- int ret = 0;
- size_t i = 0;
- ret = _mt6660_chip_power_on(chip, 1);
- if (ret < 0) {
- dev_err(component->dev, "%s chip power on failed\n", __func__);
- return ret;
- }
- for (i = 0; i < ARRAY_SIZE(mt6660_setting_table); i++) {
- ret = snd_soc_component_update_bits(component,
- mt6660_setting_table[i].addr,
- mt6660_setting_table[i].mask,
- mt6660_setting_table[i].val);
- if (ret < 0) {
- dev_err(component->dev, "%s update 0x%02x failed\n",
- __func__, mt6660_setting_table[i].addr);
- return ret;
- }
- }
- ret = _mt6660_chip_power_on(chip, 0);
- if (ret < 0) {
- dev_err(component->dev, "%s chip power off failed\n", __func__);
- return ret;
- }
- return 0;
- }
- static int mt6660_component_probe(struct snd_soc_component *component)
- {
- struct mt6660_chip *chip = snd_soc_component_get_drvdata(component);
- int ret;
- dev_dbg(component->dev, "%s\n", __func__);
- snd_soc_component_init_regmap(component, chip->regmap);
- ret = mt6660_component_setting(component);
- if (ret < 0)
- dev_err(chip->dev, "mt6660 component setting failed\n");
- return ret;
- }
- static void mt6660_component_remove(struct snd_soc_component *component)
- {
- dev_dbg(component->dev, "%s\n", __func__);
- snd_soc_component_exit_regmap(component);
- }
- static const struct snd_soc_component_driver mt6660_component_driver = {
- .probe = mt6660_component_probe,
- .remove = mt6660_component_remove,
- .controls = mt6660_component_snd_controls,
- .num_controls = ARRAY_SIZE(mt6660_component_snd_controls),
- .dapm_widgets = mt6660_component_dapm_widgets,
- .num_dapm_widgets = ARRAY_SIZE(mt6660_component_dapm_widgets),
- .dapm_routes = mt6660_component_dapm_routes,
- .num_dapm_routes = ARRAY_SIZE(mt6660_component_dapm_routes),
- .idle_bias_on = false, /* idle_bias_off = true */
- .endianness = 1,
- };
- static int mt6660_component_aif_hw_params(struct snd_pcm_substream *substream,
- struct snd_pcm_hw_params *hw_params, struct snd_soc_dai *dai)
- {
- int word_len = params_physical_width(hw_params);
- int aud_bit = params_width(hw_params);
- u16 reg_data = 0;
- int ret;
- dev_dbg(dai->dev, "%s: ++\n", __func__);
- dev_dbg(dai->dev, "format: 0x%08x\n", params_format(hw_params));
- dev_dbg(dai->dev, "rate: 0x%08x\n", params_rate(hw_params));
- dev_dbg(dai->dev, "word_len: %d, aud_bit: %d\n", word_len, aud_bit);
- if (word_len > 32 || word_len < 16) {
- dev_err(dai->dev, "not supported word length\n");
- return -ENOTSUPP;
- }
- switch (aud_bit) {
- case 16:
- reg_data = 3;
- break;
- case 18:
- reg_data = 2;
- break;
- case 20:
- reg_data = 1;
- break;
- case 24:
- case 32:
- reg_data = 0;
- break;
- default:
- return -ENOTSUPP;
- }
- ret = snd_soc_component_update_bits(dai->component,
- MT6660_REG_SERIAL_CFG1, 0xc0, (reg_data << 6));
- if (ret < 0) {
- dev_err(dai->dev, "config aud bit fail\n");
- return ret;
- }
- ret = snd_soc_component_update_bits(dai->component,
- MT6660_REG_TDM_CFG3, 0x3f0, word_len << 4);
- if (ret < 0) {
- dev_err(dai->dev, "config word len fail\n");
- return ret;
- }
- dev_dbg(dai->dev, "%s: --\n", __func__);
- return 0;
- }
- static const struct snd_soc_dai_ops mt6660_component_aif_ops = {
- .hw_params = mt6660_component_aif_hw_params,
- };
- #define STUB_RATES SNDRV_PCM_RATE_8000_192000
- #define STUB_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \
- SNDRV_PCM_FMTBIT_U16_LE | \
- SNDRV_PCM_FMTBIT_S24_LE | \
- SNDRV_PCM_FMTBIT_U24_LE | \
- SNDRV_PCM_FMTBIT_S32_LE | \
- SNDRV_PCM_FMTBIT_U32_LE)
- static struct snd_soc_dai_driver mt6660_codec_dai = {
- .name = "mt6660-aif",
- .playback = {
- .stream_name = "aif_playback",
- .channels_min = 1,
- .channels_max = 2,
- .rates = STUB_RATES,
- .formats = STUB_FORMATS,
- },
- .capture = {
- .stream_name = "aif_capture",
- .channels_min = 1,
- .channels_max = 2,
- .rates = STUB_RATES,
- .formats = STUB_FORMATS,
- },
- /* dai properties */
- .symmetric_rate = 1,
- .symmetric_channels = 1,
- .symmetric_sample_bits = 1,
- /* dai operations */
- .ops = &mt6660_component_aif_ops,
- };
- static int _mt6660_chip_id_check(struct mt6660_chip *chip)
- {
- int ret;
- unsigned int val;
- ret = regmap_read(chip->regmap, MT6660_REG_DEVID, &val);
- if (ret < 0)
- return ret;
- val &= 0x0ff0;
- if (val != 0x00e0 && val != 0x01e0) {
- dev_err(chip->dev, "%s id(%x) not match\n", __func__, val);
- return -ENODEV;
- }
- return 0;
- }
- static int _mt6660_chip_sw_reset(struct mt6660_chip *chip)
- {
- int ret;
- /* turn on main pll first, then trigger reset */
- ret = regmap_write(chip->regmap, MT6660_REG_SYSTEM_CTRL, 0x00);
- if (ret < 0)
- return ret;
- ret = regmap_write(chip->regmap, MT6660_REG_SYSTEM_CTRL, 0x80);
- if (ret < 0)
- return ret;
- msleep(30);
- return 0;
- }
- static int _mt6660_read_chip_revision(struct mt6660_chip *chip)
- {
- int ret;
- unsigned int val;
- ret = regmap_read(chip->regmap, MT6660_REG_DEVID, &val);
- if (ret < 0) {
- dev_err(chip->dev, "get chip revision fail\n");
- return ret;
- }
- chip->chip_rev = val&0xff;
- dev_info(chip->dev, "%s chip_rev = %x\n", __func__, chip->chip_rev);
- return 0;
- }
- static int mt6660_i2c_probe(struct i2c_client *client)
- {
- struct mt6660_chip *chip = NULL;
- int ret;
- dev_dbg(&client->dev, "%s\n", __func__);
- chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL);
- if (!chip)
- return -ENOMEM;
- chip->i2c = client;
- chip->dev = &client->dev;
- mutex_init(&chip->io_lock);
- i2c_set_clientdata(client, chip);
- chip->regmap = devm_regmap_init(&client->dev,
- NULL, chip, &mt6660_regmap_config);
- if (IS_ERR(chip->regmap)) {
- ret = PTR_ERR(chip->regmap);
- dev_err(&client->dev, "failed to initialise regmap: %d\n", ret);
- return ret;
- }
- /* chip reset first */
- ret = _mt6660_chip_sw_reset(chip);
- if (ret < 0) {
- dev_err(chip->dev, "chip reset fail\n");
- goto probe_fail;
- }
- /* chip power on */
- ret = _mt6660_chip_power_on(chip, 1);
- if (ret < 0) {
- dev_err(chip->dev, "chip power on 2 fail\n");
- goto probe_fail;
- }
- /* chip devid check */
- ret = _mt6660_chip_id_check(chip);
- if (ret < 0) {
- dev_err(chip->dev, "chip id check fail\n");
- goto probe_fail;
- }
- /* chip revision get */
- ret = _mt6660_read_chip_revision(chip);
- if (ret < 0) {
- dev_err(chip->dev, "read chip revision fail\n");
- goto probe_fail;
- }
- pm_runtime_set_active(chip->dev);
- pm_runtime_enable(chip->dev);
- ret = devm_snd_soc_register_component(chip->dev,
- &mt6660_component_driver,
- &mt6660_codec_dai, 1);
- if (ret)
- pm_runtime_disable(chip->dev);
- return ret;
- probe_fail:
- _mt6660_chip_power_on(chip, 0);
- mutex_destroy(&chip->io_lock);
- return ret;
- }
- static void mt6660_i2c_remove(struct i2c_client *client)
- {
- struct mt6660_chip *chip = i2c_get_clientdata(client);
- pm_runtime_disable(chip->dev);
- pm_runtime_set_suspended(chip->dev);
- mutex_destroy(&chip->io_lock);
- }
- static int __maybe_unused mt6660_i2c_runtime_suspend(struct device *dev)
- {
- struct mt6660_chip *chip = dev_get_drvdata(dev);
- dev_dbg(dev, "enter low power mode\n");
- return regmap_update_bits(chip->regmap,
- MT6660_REG_SYSTEM_CTRL, 0x01, 0x01);
- }
- static int __maybe_unused mt6660_i2c_runtime_resume(struct device *dev)
- {
- struct mt6660_chip *chip = dev_get_drvdata(dev);
- dev_dbg(dev, "exit low power mode\n");
- return regmap_update_bits(chip->regmap,
- MT6660_REG_SYSTEM_CTRL, 0x01, 0x00);
- }
- static const struct dev_pm_ops mt6660_dev_pm_ops = {
- SET_RUNTIME_PM_OPS(mt6660_i2c_runtime_suspend,
- mt6660_i2c_runtime_resume, NULL)
- };
- static const struct of_device_id __maybe_unused mt6660_of_id[] = {
- { .compatible = "mediatek,mt6660",},
- {},
- };
- MODULE_DEVICE_TABLE(of, mt6660_of_id);
- static const struct i2c_device_id mt6660_i2c_id[] = {
- {"mt6660", 0 },
- {},
- };
- MODULE_DEVICE_TABLE(i2c, mt6660_i2c_id);
- static struct i2c_driver mt6660_i2c_driver = {
- .driver = {
- .name = "mt6660",
- .of_match_table = of_match_ptr(mt6660_of_id),
- .pm = &mt6660_dev_pm_ops,
- },
- .probe_new = mt6660_i2c_probe,
- .remove = mt6660_i2c_remove,
- .id_table = mt6660_i2c_id,
- };
- module_i2c_driver(mt6660_i2c_driver);
- MODULE_AUTHOR("Jeff Chang <[email protected]>");
- MODULE_DESCRIPTION("MT6660 SPKAMP Driver");
- MODULE_LICENSE("GPL");
- MODULE_VERSION("1.0.8_G");
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