+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0
-
-#include <linux/bits.h>
-#include <linux/delay.h>
-#include <linux/gpio/consumer.h>
-#include <linux/i2c.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/regmap.h>
-#include <linux/regulator/consumer.h>
-#include <sound/pcm.h>
-#include <sound/pcm_params.h>
-#include <sound/soc.h>
-#include <sound/tlv.h>
-
-#define RT9120_REG_DEVID 0x00
-#define RT9120_REG_I2SFMT 0x02
-#define RT9120_REG_I2SWL 0x03
-#define RT9120_REG_SDIOSEL 0x04
-#define RT9120_REG_SYSCTL 0x05
-#define RT9120_REG_SPKGAIN 0x07
-#define RT9120_REG_VOLRAMP 0x0A
-#define RT9120_REG_ERRRPT 0x10
-#define RT9120_REG_MSVOL 0x20
-#define RT9120_REG_SWRESET 0x40
-#define RT9120_REG_INTERNAL0 0x65
-#define RT9120_REG_INTERNAL1 0x69
-#define RT9120_REG_UVPOPT 0x6C
-
-#define RT9120_VID_MASK GENMASK(15, 8)
-#define RT9120_SWRST_MASK BIT(7)
-#define RT9120_MUTE_MASK GENMASK(5, 4)
-#define RT9120_I2SFMT_MASK GENMASK(4, 2)
-#define RT9120_I2SFMT_SHIFT 2
-#define RT9120_CFG_FMT_I2S 0
-#define RT9120_CFG_FMT_LEFTJ 1
-#define RT9120_CFG_FMT_RIGHTJ 2
-#define RT9120_CFG_FMT_DSPA 3
-#define RT9120_CFG_FMT_DSPB 7
-#define RT9120_AUDBIT_MASK GENMASK(1, 0)
-#define RT9120_CFG_AUDBIT_16 0
-#define RT9120_CFG_AUDBIT_20 1
-#define RT9120_CFG_AUDBIT_24 2
-#define RT9120_AUDWL_MASK GENMASK(5, 0)
-#define RT9120_CFG_WORDLEN_16 16
-#define RT9120_CFG_WORDLEN_24 24
-#define RT9120_CFG_WORDLEN_32 32
-#define RT9120_DVDD_UVSEL_MASK GENMASK(5, 4)
-
-#define RT9120_VENDOR_ID 0x4200
-#define RT9120_RESET_WAITMS 20
-#define RT9120_CHIPON_WAITMS 20
-#define RT9120_AMPON_WAITMS 50
-#define RT9120_AMPOFF_WAITMS 100
-#define RT9120_LVAPP_THRESUV 2000000
-
-/* 8000 to 192000 supported , only 176400 not support */
-#define RT9120_RATES_MASK (SNDRV_PCM_RATE_8000_192000 &\
- ~SNDRV_PCM_RATE_176400)
-#define RT9120_FMTS_MASK (SNDRV_PCM_FMTBIT_S16_LE |\
- SNDRV_PCM_FMTBIT_S24_LE |\
- SNDRV_PCM_FMTBIT_S32_LE)
-
-struct rt9120_data {
- struct device *dev;
- struct regmap *regmap;
-};
-
-/* 11bit [min,max,step] = [-103.9375dB, 24dB, 0.0625dB] */
-static const DECLARE_TLV_DB_SCALE(digital_gain, -1039375, 625, -1039375);
-
-static const char * const sdo_select_text[] = {
- "None", "INTF", "Final", "RMS Detect"
-};
-
-static const struct soc_enum sdo_select_enum =
- SOC_ENUM_SINGLE(RT9120_REG_SDIOSEL, 4, ARRAY_SIZE(sdo_select_text),
- sdo_select_text);
-
-static const struct snd_kcontrol_new rt9120_snd_controls[] = {
- SOC_SINGLE_TLV("MS Volume", RT9120_REG_MSVOL, 0, 2047, 1, digital_gain),
- SOC_SINGLE("SPK Volume", RT9120_REG_SPKGAIN, 0, 7, 0),
- SOC_SINGLE("PBTL Switch", RT9120_REG_SYSCTL, 3, 1, 0),
- SOC_ENUM("SDO Select", sdo_select_enum),
-};
-
-static int internal_power_event(struct snd_soc_dapm_widget *w,
- struct snd_kcontrol *kcontrol, int event)
-{
- struct snd_soc_component *comp = snd_soc_dapm_to_component(w->dapm);
-
- switch (event) {
- case SND_SOC_DAPM_PRE_PMU:
- snd_soc_component_write(comp, RT9120_REG_ERRRPT, 0);
- break;
- case SND_SOC_DAPM_POST_PMU:
- msleep(RT9120_AMPON_WAITMS);
- break;
- case SND_SOC_DAPM_POST_PMD:
- msleep(RT9120_AMPOFF_WAITMS);
- break;
- default:
- break;
- }
-
- return 0;
-}
-
-static const struct snd_soc_dapm_widget rt9120_dapm_widgets[] = {
- SND_SOC_DAPM_MIXER("DMIX", SND_SOC_NOPM, 0, 0, NULL, 0),
- SND_SOC_DAPM_DAC("LDAC", NULL, SND_SOC_NOPM, 0, 0),
- SND_SOC_DAPM_DAC("RDAC", NULL, SND_SOC_NOPM, 0, 0),
- SND_SOC_DAPM_SUPPLY("PWND", RT9120_REG_SYSCTL, 6, 1,
- internal_power_event, SND_SOC_DAPM_PRE_PMU |
- SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
- SND_SOC_DAPM_PGA("SPKL PA", SND_SOC_NOPM, 0, 0, NULL, 0),
- SND_SOC_DAPM_PGA("SPKR PA", SND_SOC_NOPM, 0, 0, NULL, 0),
- SND_SOC_DAPM_OUTPUT("SPKL"),
- SND_SOC_DAPM_OUTPUT("SPKR"),
-};
-
-static const struct snd_soc_dapm_route rt9120_dapm_routes[] = {
- { "DMIX", NULL, "AIF Playback" },
- /* SPKL */
- { "LDAC", NULL, "PWND" },
- { "LDAC", NULL, "DMIX" },
- { "SPKL PA", NULL, "LDAC" },
- { "SPKL", NULL, "SPKL PA" },
- /* SPKR */
- { "RDAC", NULL, "PWND" },
- { "RDAC", NULL, "DMIX" },
- { "SPKR PA", NULL, "RDAC" },
- { "SPKR", NULL, "SPKR PA" },
- /* Cap */
- { "AIF Capture", NULL, "LDAC" },
- { "AIF Capture", NULL, "RDAC" },
-};
-
-static int rt9120_codec_probe(struct snd_soc_component *comp)
-{
- struct rt9120_data *data = snd_soc_component_get_drvdata(comp);
-
- snd_soc_component_init_regmap(comp, data->regmap);
-
- /* Internal setting */
- snd_soc_component_write(comp, RT9120_REG_INTERNAL1, 0x03);
- snd_soc_component_write(comp, RT9120_REG_INTERNAL0, 0x69);
- return 0;
-}
-
-static const struct snd_soc_component_driver rt9120_component_driver = {
- .probe = rt9120_codec_probe,
- .controls = rt9120_snd_controls,
- .num_controls = ARRAY_SIZE(rt9120_snd_controls),
- .dapm_widgets = rt9120_dapm_widgets,
- .num_dapm_widgets = ARRAY_SIZE(rt9120_dapm_widgets),
- .dapm_routes = rt9120_dapm_routes,
- .num_dapm_routes = ARRAY_SIZE(rt9120_dapm_routes),
-};
-
-static int rt9120_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
-{
- struct snd_soc_component *comp = dai->component;
- unsigned int format;
-
- switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
- case SND_SOC_DAIFMT_I2S:
- format = RT9120_CFG_FMT_I2S;
- break;
- case SND_SOC_DAIFMT_LEFT_J:
- format = RT9120_CFG_FMT_LEFTJ;
- break;
- case SND_SOC_DAIFMT_RIGHT_J:
- format = RT9120_CFG_FMT_RIGHTJ;
- break;
- case SND_SOC_DAIFMT_DSP_A:
- format = RT9120_CFG_FMT_DSPA;
- break;
- case SND_SOC_DAIFMT_DSP_B:
- format = RT9120_CFG_FMT_DSPB;
- break;
- default:
- dev_err(dai->dev, "Unknown dai format\n");
- return -EINVAL;
- }
-
- snd_soc_component_update_bits(comp, RT9120_REG_I2SFMT,
- RT9120_I2SFMT_MASK,
- format << RT9120_I2SFMT_SHIFT);
- return 0;
-}
-
-static int rt9120_hw_params(struct snd_pcm_substream *substream,
- struct snd_pcm_hw_params *param,
- struct snd_soc_dai *dai)
-{
- struct snd_soc_component *comp = dai->component;
- unsigned int param_width, param_slot_width;
- int width;
-
- switch (width = params_width(param)) {
- case 16:
- param_width = RT9120_CFG_AUDBIT_16;
- break;
- case 20:
- param_width = RT9120_CFG_AUDBIT_20;
- break;
- case 24:
- case 32:
- param_width = RT9120_CFG_AUDBIT_24;
- break;
- default:
- dev_err(dai->dev, "Unsupported data width [%d]\n", width);
- return -EINVAL;
- }
-
- snd_soc_component_update_bits(comp, RT9120_REG_I2SFMT,
- RT9120_AUDBIT_MASK, param_width);
-
- switch (width = params_physical_width(param)) {
- case 16:
- param_slot_width = RT9120_CFG_WORDLEN_16;
- break;
- case 24:
- param_slot_width = RT9120_CFG_WORDLEN_24;
- break;
- case 32:
- param_slot_width = RT9120_CFG_WORDLEN_32;
- break;
- default:
- dev_err(dai->dev, "Unsupported slot width [%d]\n", width);
- return -EINVAL;
- }
-
- snd_soc_component_update_bits(comp, RT9120_REG_I2SWL,
- RT9120_AUDWL_MASK, param_slot_width);
- return 0;
-}
-
-static const struct snd_soc_dai_ops rt9120_dai_ops = {
- .set_fmt = rt9120_set_fmt,
- .hw_params = rt9120_hw_params,
-};
-
-static struct snd_soc_dai_driver rt9120_dai = {
- .name = "rt9120_aif",
- .playback = {
- .stream_name = "AIF Playback",
- .rates = RT9120_RATES_MASK,
- .formats = RT9120_FMTS_MASK,
- .rate_max = 192000,
- .rate_min = 8000,
- .channels_min = 1,
- .channels_max = 2,
- },
- .capture = {
- .stream_name = "AIF Capture",
- .rates = RT9120_RATES_MASK,
- .formats = RT9120_FMTS_MASK,
- .rate_max = 192000,
- .rate_min = 8000,
- .channels_min = 1,
- .channels_max = 2,
- },
- .ops = &rt9120_dai_ops,
- .symmetric_rate = 1,
- .symmetric_sample_bits = 1,
-};
-
-static const struct regmap_range rt9120_rd_yes_ranges[] = {
- regmap_reg_range(0x00, 0x0C),
- regmap_reg_range(0x10, 0x15),
- regmap_reg_range(0x20, 0x27),
- regmap_reg_range(0x30, 0x38),
- regmap_reg_range(0x3A, 0x40),
- regmap_reg_range(0x65, 0x65),
- regmap_reg_range(0x69, 0x69),
- regmap_reg_range(0x6C, 0x6C)
-};
-
-static const struct regmap_access_table rt9120_rd_table = {
- .yes_ranges = rt9120_rd_yes_ranges,
- .n_yes_ranges = ARRAY_SIZE(rt9120_rd_yes_ranges),
-};
-
-static const struct regmap_range rt9120_wr_yes_ranges[] = {
- regmap_reg_range(0x00, 0x00),
- regmap_reg_range(0x02, 0x0A),
- regmap_reg_range(0x10, 0x15),
- regmap_reg_range(0x20, 0x27),
- regmap_reg_range(0x30, 0x38),
- regmap_reg_range(0x3A, 0x3D),
- regmap_reg_range(0x40, 0x40),
- regmap_reg_range(0x65, 0x65),
- regmap_reg_range(0x69, 0x69),
- regmap_reg_range(0x6C, 0x6C)
-};
-
-static const struct regmap_access_table rt9120_wr_table = {
- .yes_ranges = rt9120_wr_yes_ranges,
- .n_yes_ranges = ARRAY_SIZE(rt9120_wr_yes_ranges),
-};
-
-static int rt9120_get_reg_size(unsigned int reg)
-{
- switch (reg) {
- case 0x00:
- case 0x09:
- case 0x20 ... 0x27:
- return 2;
- case 0x30 ... 0x3D:
- return 3;
- case 0x3E ... 0x3F:
- return 4;
- default:
- return 1;
- }
-}
-
-static int rt9120_reg_read(void *context, unsigned int reg, unsigned int *val)
-{
- struct rt9120_data *data = context;
- struct i2c_client *i2c = to_i2c_client(data->dev);
- int size = rt9120_get_reg_size(reg);
- u8 raw[4] = {0};
- int ret;
-
- ret = i2c_smbus_read_i2c_block_data(i2c, reg, size, raw);
- if (ret < 0)
- return ret;
- else if (ret != size)
- return -EIO;
-
- switch (size) {
- case 4:
- *val = be32_to_cpup((__be32 *)raw);
- break;
- case 3:
- *val = raw[0] << 16 | raw[1] << 8 | raw[0];
- break;
- case 2:
- *val = be16_to_cpup((__be16 *)raw);
- break;
- default:
- *val = raw[0];
- }
-
- return 0;
-}
-
-static int rt9120_reg_write(void *context, unsigned int reg, unsigned int val)
-{
- struct rt9120_data *data = context;
- struct i2c_client *i2c = to_i2c_client(data->dev);
- int size = rt9120_get_reg_size(reg);
- __be32 be32_val;
- u8 *rawp = (u8 *)&be32_val;
- int offs = 4 - size;
-
- be32_val = cpu_to_be32(val);
- return i2c_smbus_write_i2c_block_data(i2c, reg, size, rawp + offs);
-}
-
-static const struct regmap_config rt9120_regmap_config = {
- .reg_bits = 8,
- .val_bits = 32,
- .max_register = RT9120_REG_UVPOPT,
-
- .reg_read = rt9120_reg_read,
- .reg_write = rt9120_reg_write,
-
- .wr_table = &rt9120_wr_table,
- .rd_table = &rt9120_rd_table,
-};
-
-static int rt9120_check_vendor_info(struct rt9120_data *data)
-{
- unsigned int devid;
- int ret;
-
- ret = regmap_read(data->regmap, RT9120_REG_DEVID, &devid);
- if (ret)
- return ret;
-
- if ((devid & RT9120_VID_MASK) != RT9120_VENDOR_ID) {
- dev_err(data->dev, "DEVID not correct [0x%04x]\n", devid);
- return -ENODEV;
- }
-
- return 0;
-}
-
-static int rt9120_do_register_reset(struct rt9120_data *data)
-{
- int ret;
-
- ret = regmap_write(data->regmap, RT9120_REG_SWRESET,
- RT9120_SWRST_MASK);
- if (ret)
- return ret;
-
- msleep(RT9120_RESET_WAITMS);
- return 0;
-}
-
-static int rt9120_probe(struct i2c_client *i2c)
-{
- struct rt9120_data *data;
- struct gpio_desc *pwdnn_gpio;
- struct regulator *dvdd_supply;
- int dvdd_supply_volt, ret;
-
- data = devm_kzalloc(&i2c->dev, sizeof(*data), GFP_KERNEL);
- if (!data)
- return -ENOMEM;
-
- data->dev = &i2c->dev;
- i2c_set_clientdata(i2c, data);
-
- pwdnn_gpio = devm_gpiod_get_optional(&i2c->dev, "pwdnn",
- GPIOD_OUT_HIGH);
- if (IS_ERR(pwdnn_gpio)) {
- dev_err(&i2c->dev, "Failed to initialize 'pwdnn' gpio\n");
- return PTR_ERR(pwdnn_gpio);
- } else if (pwdnn_gpio) {
- dev_dbg(&i2c->dev, "'pwdnn' from low to high, wait chip on\n");
- msleep(RT9120_CHIPON_WAITMS);
- }
-
- data->regmap = devm_regmap_init(&i2c->dev, NULL, data,
- &rt9120_regmap_config);
- if (IS_ERR(data->regmap)) {
- ret = PTR_ERR(data->regmap);
- dev_err(&i2c->dev, "Failed to init regmap [%d]\n", ret);
- return ret;
- }
-
- ret = rt9120_check_vendor_info(data);
- if (ret) {
- dev_err(&i2c->dev, "Failed to check vendor info\n");
- return ret;
- }
-
- ret = rt9120_do_register_reset(data);
- if (ret) {
- dev_err(&i2c->dev, "Failed to do register reset\n");
- return ret;
- }
-
- dvdd_supply = devm_regulator_get(&i2c->dev, "dvdd");
- if (IS_ERR(dvdd_supply)) {
- dev_err(&i2c->dev, "No dvdd regulator found\n");
- return PTR_ERR(dvdd_supply);
- }
-
- dvdd_supply_volt = regulator_get_voltage(dvdd_supply);
- if (dvdd_supply_volt <= RT9120_LVAPP_THRESUV) {
- dev_dbg(&i2c->dev, "dvdd low voltage design\n");
- ret = regmap_update_bits(data->regmap, RT9120_REG_UVPOPT,
- RT9120_DVDD_UVSEL_MASK, 0);
- if (ret) {
- dev_err(&i2c->dev, "Failed to config dvdd uvsel\n");
- return ret;
- }
- }
-
- return devm_snd_soc_register_component(&i2c->dev,
- &rt9120_component_driver,
- &rt9120_dai, 1);
-}
-
-static const struct of_device_id __maybe_unused rt9120_device_table[] = {
- { .compatible = "richtek,rt9120", },
- { }
-};
-MODULE_DEVICE_TABLE(of, rt9120_device_table);
-
-static struct i2c_driver rt9120_driver = {
- .driver = {
- .name = "rt9120",
- .of_match_table = rt9120_device_table,
- },
- .probe_new = rt9120_probe,
-};
-module_i2c_driver(rt9120_driver);
-
-MODULE_AUTHOR("ChiYuan Huang <cy_huang@richtek.com>");
-MODULE_DESCRIPTION("RT9120 Audio Amplifier Driver");
-MODULE_LICENSE("GPL");
projects / linux.git / commitdiff