From: ChiYuan Huang cy_huang@richtek.com

Add Richtek rtq9128 automotive audio amplifier.

Signed-off-by: ChiYuan Huang cy_huang@richtek.com --- Hi,

At v3, the new added item for DVDD undervoltage selection is from our HW guy's suggestion. Only this item is not from the reviewer comment list.

v3 - Fix patch title - Modify the copyright and author comment text to c++ style - Change regmap cache type from RBTREE to MAPLE - Remove magic soc_enum array, change it to each dedicated soc_enum instance - Change regmap bus read/write BUG_ON to if/errlog/return - Remove the fixed DVDD undervoltage threshold setting in RTQ9128 DH&DL init table. - Add DVDD undervoltage threshold selection in mixer control. --- sound/soc/codecs/Kconfig | 15 + sound/soc/codecs/Makefile | 2 + sound/soc/codecs/rtq9128.c | 766 +++++++++++++++++++++++++++++++++++++ 3 files changed, 783 insertions(+) create mode 100644 sound/soc/codecs/rtq9128.c

diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig index f1e1dbc509f6..dfa7ea7782cc 100644 --- a/sound/soc/codecs/Kconfig +++ b/sound/soc/codecs/Kconfig @@ -218,6 +218,7 @@ config SND_SOC_ALL_CODECS imply SND_SOC_RT1316_SDW imply SND_SOC_RT1318_SDW imply SND_SOC_RT9120 + imply SND_SOC_RTQ9128 imply SND_SOC_SDW_MOCKUP imply SND_SOC_SGTL5000 imply SND_SOC_SI476X @@ -1636,6 +1637,20 @@ config SND_SOC_RT9120 Enable support for Richtek RT9120 20W, stereo, inductor-less, high-efficiency Class-D audio amplifier.

+config SND_SOC_RTQ9128 + tristate "Richtek RTQ9128 45W Digital Input Amplifier" + depends on I2C + select REGMAP + help + Enable support for Richtek RTQ9128 digital input 4-channel + automotive audio amplifier. It is a ultra-low output noise, + high-efficiency, four-channel class-D audio power amplifier + that can deliver over 87% power efficienty at 4x75W into 4Ohm, + 25V supply in automotive applications. + + To compile this driver as a module, choose M here: the module + will be called snd-soc-rtq9128. + config SND_SOC_SDW_MOCKUP tristate "SoundWire mockup codec" depends on EXPERT diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile index a87e56938ce5..678b41c09210 100644 --- a/sound/soc/codecs/Makefile +++ b/sound/soc/codecs/Makefile @@ -245,6 +245,7 @@ snd-soc-rt715-objs := rt715.o rt715-sdw.o snd-soc-rt715-sdca-objs := rt715-sdca.o rt715-sdca-sdw.o snd-soc-rt722-sdca-objs := rt722-sdca.o rt722-sdca-sdw.o snd-soc-rt9120-objs := rt9120.o +snd-soc-rtq9128-objs := rtq9128.o snd-soc-sdw-mockup-objs := sdw-mockup.o snd-soc-sgtl5000-objs := sgtl5000.o snd-soc-alc5623-objs := alc5623.o @@ -627,6 +628,7 @@ obj-$(CONFIG_SND_SOC_RT715) += snd-soc-rt715.o obj-$(CONFIG_SND_SOC_RT715_SDCA_SDW) += snd-soc-rt715-sdca.o obj-$(CONFIG_SND_SOC_RT722_SDCA_SDW) += snd-soc-rt722-sdca.o obj-$(CONFIG_SND_SOC_RT9120) += snd-soc-rt9120.o +obj-$(CONFIG_SND_SOC_RTQ9128) += snd-soc-rtq9128.o obj-$(CONFIG_SND_SOC_SDW_MOCKUP) += snd-soc-sdw-mockup.o obj-$(CONFIG_SND_SOC_SGTL5000) += snd-soc-sgtl5000.o obj-$(CONFIG_SND_SOC_SIGMADSP) += snd-soc-sigmadsp.o diff --git a/sound/soc/codecs/rtq9128.c b/sound/soc/codecs/rtq9128.c new file mode 100644 index 000000000000..926b79ed8078 --- /dev/null +++ b/sound/soc/codecs/rtq9128.c @@ -0,0 +1,766 @@ +// SPDX-License-Identifier: GPL-2.0-only +// +// Copyright (c) 2023 Richtek Technology Corp. +// +// Author: ChiYuan Huang cy_huang@richtek.com +// + +#include <linux/bitfield.h> +#include <linux/bits.h> +#include <linux/delay.h> +#include <linux/gpio/consumer.h> +#include <linux/i2c.h> +#include <linux/kernel.h> +#include <linux/mod_devicetable.h> +#include <linux/module.h> +#include <linux/pm_runtime.h> +#include <linux/regmap.h> +#include <sound/pcm_params.h> +#include <sound/soc.h> +#include <sound/tlv.h> + +#define RTQ9128_REG_SDI_SEL 0x00 +#define RTQ9128_REG_SDO_SEL 0x01 +#define RTQ9128_REG_I2S_OPT 0x02 +#define RTQ9128_REG_MISC 0x03 +#define RTQ9128_REG_STATE_CTRL 0x04 +#define RTQ9128_REG_PLLTRI_GEN1 0x05 +#define RTQ9128_REG_PLLTRI_GEN2 0x06 +#define RTQ9128_REG_PWM_SS_OPT 0x07 +#define RTQ9128_REG_DSP_EN 0x08 +#define RTQ9128_REG_TDM_TX_CH1 0x21 +#define RTQ9128_REG_TDM_RX_CH1 0x25 +#define RTQ9128_REG_MS_VOL 0x30 +#define RTQ9128_REG_CH1_VOL 0x31 +#define RTQ9128_REG_CH2_VOL 0x32 +#define RTQ9128_REG_CH3_VOL 0x33 +#define RTQ9128_REG_CH4_VOL 0x34 +#define RTQ9128_REG_PROT_OPT 0x71 +#define RTQ9128_REG_EFUSE_DATA 0xE0 +#define RTQ9128_REG_VENDOR_ID 0xF9 + +#define RTQ9128_CHSTAT_VAL_MASK GENMASK(1, 0) +#define RTQ9128_DOLEN_MASK GENMASK(7, 6) +#define RTQ9128_AUDBIT_MASK GENMASK(5, 4) +#define RTQ9128_AUDFMT_MASK GENMASK(3, 0) +#define RTQ9128_MSMUTE_MASK BIT(0) +#define RTQ9128_DIE_CHECK_MASK GENMASK(4, 0) +#define RTQ9128_VENDOR_ID_MASK GENMASK(19, 8) + +#define RTQ9128_SOFT_RESET_VAL 0x80 +#define RTQ9128_VENDOR_ID_VAL 0x470 +#define RTQ9128_ALLCH_HIZ_VAL 0x55 +#define RTQ9128_ALLCH_ULQM_VAL 0xFF +#define RTQ9128_TKA470B_VAL 0 +#define RTQ9128_RTQ9128DH_VAL 0x0F +#define RTQ9128_RTQ9128DL_VAL 0x10 + +struct rtq9128_data { + struct gpio_desc *enable; + int tdm_slots; + int tdm_slot_width; +}; + +struct rtq9128_init_reg { + unsigned int reg; + unsigned int val; +}; + +static int rtq9128_get_reg_size(unsigned int reg) +{ + switch (reg) { + case 0x5C ... 0x6F: + case 0x98 ... 0x9F: + case 0xC0 ... 0xC3: + case 0xC8 ... 0xCF: + case 0xDF ... 0xE5: + case 0xF9: + return 4; + case 0x40 ... 0x4F: + return 3; + case 0x30 ... 0x35: + case 0x8C ... 0x97: + case 0xC4 ... 0xC7: + case 0xD7 ... 0xDA: + return 2; + default: + return 1; + } +} + +static int rtq9128_i2c_write(void *context, const void *data, size_t count) +{ + struct device *dev = context; + struct i2c_client *i2c = to_i2c_client(dev); + u8 reg = *(u8 *)data; + int rg_size; + + if (count != 5) { + dev_err(dev, "Invalid write for data length (%d)\n", (int)count); + return -EINVAL; + } + + rg_size = rtq9128_get_reg_size(reg); + return i2c_smbus_write_i2c_block_data(i2c, reg, rg_size, data + count - rg_size); +} + +static int rtq9128_i2c_read(void *context, const void *reg_buf, size_t reg_size, void *val_buf, + size_t val_size) +{ + struct device *dev = context; + struct i2c_client *i2c = to_i2c_client(dev); + u8 reg = *(u8 *)reg_buf; + u8 data_tmp[4] = {}; + int rg_size, ret; + + if (reg_size != 1 || val_size != 4) { + dev_err(dev, "Invalid read for reg_size (%d) or val_size (%d)\n", (int)reg_size, + (int)val_size); + return -EINVAL; + } + + rg_size = rtq9128_get_reg_size(reg); + ret = i2c_smbus_read_i2c_block_data(i2c, reg, rg_size, data_tmp); + if (ret < 0) + return ret; + else if (ret != rg_size) + return -EIO; + + memset(val_buf, 0, val_size - rg_size); + memcpy(val_buf + val_size - rg_size, data_tmp, rg_size); + + return 0; +} + +static const struct regmap_bus rtq9128_regmap_bus = { + .write = rtq9128_i2c_write, + .read = rtq9128_i2c_read, + .max_raw_read = 4, + .max_raw_write = 4, +}; + +static bool rtq9128_is_readable_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case 0x00 ... 0x2B: + case 0x30 ... 0x35: + case 0x40 ... 0x56: + case 0x5C ... 0x76: + case 0x80 ... 0xAD: + case 0xB0 ... 0xBA: + case 0xC0 ... 0xE5: + case 0xF0 ... 0xFB: + return true; + default: + return false; + } +} + +static bool rtq9128_is_writeable_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case 0x00 ... 0x1F: + case 0x21 ... 0x2B: + case 0x30 ... 0x35: + case 0x40 ... 0x56: + case 0x5C ... 0x76: + case 0x80 ... 0x8B: + case 0xA0 ... 0xAD: + case 0xB0 ... 0xBA: + case 0xC0: + case 0xD0 ... 0xDE: + case 0xE0 ... 0xE5: + case 0xF0 ... 0xF3: + case 0xF6 ... 0xF8: + case 0xFA ... 0xFB: + return true; + default: + return false; + } +} + +static bool rtq9128_is_volatile_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case 0x0F ... 0x17: + case 0x20: + case 0x53: + case 0x55: + case 0x5C ... 0x6F: + case 0x8C ... 0x9F: + case 0xC0 ... 0xCF: + case 0xDF: + case 0xF0 ... 0xF1: + case 0xF4 ... 0xF5: + return true; + default: + return false; + } +} + +static const struct regmap_config rtq9128_regmap_config = { + .name = "rtq9128", + .reg_bits = 8, + .val_bits = 32, + .val_format_endian = REGMAP_ENDIAN_BIG, + .cache_type = REGCACHE_MAPLE, + + .readable_reg = rtq9128_is_readable_reg, + .writeable_reg = rtq9128_is_writeable_reg, + .volatile_reg = rtq9128_is_volatile_reg, + .num_reg_defaults_raw = RTQ9128_REG_VENDOR_ID + 1, +}; + +static const DECLARE_TLV_DB_SCALE(dig_tlv, -10375, 25, 0); + +static const DECLARE_TLV_DB_RANGE(spkgain_tlv, + 0, 3, TLV_DB_SCALE_ITEM(-600, 600, 0), + 4, 5, TLV_DB_SCALE_ITEM(1500, 300, 0), +); + +static const char * const source_select_text[] = { "CH1", "CH2", "CH3", "CH4" }; +static const char * const pwmfreq_select_text[] = { "8fs", "10fs", "40fs", "44fs", "48fs" }; +static const char * const phase_select_text[] = { + "0 degree", "45 degree", "90 degree", "135 degree", + "180 degree", "225 degree", "270 degree", "315 degree", +}; +static const char * const dvdduv_select_text[] = { "1P4V", "1P5V", "2P1V", "2P3V" }; + +static const struct soc_enum rtq9128_ch1_si_enum = + SOC_ENUM_SINGLE(RTQ9128_REG_SDI_SEL, 6, ARRAY_SIZE(source_select_text), source_select_text); +static const struct soc_enum rtq9128_ch2_si_enum = + SOC_ENUM_SINGLE(RTQ9128_REG_SDI_SEL, 4, ARRAY_SIZE(source_select_text), source_select_text); +static const struct soc_enum rtq9128_ch3_si_enum = + SOC_ENUM_SINGLE(RTQ9128_REG_SDI_SEL, 2, ARRAY_SIZE(source_select_text), source_select_text); +static const struct soc_enum rtq9128_ch4_si_enum = + SOC_ENUM_SINGLE(RTQ9128_REG_SDI_SEL, 0, ARRAY_SIZE(source_select_text), source_select_text); +static const struct soc_enum rtq9128_pwm_freq_enum = + SOC_ENUM_SINGLE(RTQ9128_REG_PLLTRI_GEN1, 4, ARRAY_SIZE(pwmfreq_select_text), + pwmfreq_select_text); +static const struct soc_enum rtq9128_out2_phase_enum = + SOC_ENUM_SINGLE(RTQ9128_REG_PLLTRI_GEN1, 0, ARRAY_SIZE(phase_select_text), + phase_select_text); +static const struct soc_enum rtq9128_out3_phase_enum = + SOC_ENUM_SINGLE(RTQ9128_REG_PLLTRI_GEN2, 4, ARRAY_SIZE(phase_select_text), + phase_select_text); +static const struct soc_enum rtq9128_out4_phase_enum = + SOC_ENUM_SINGLE(RTQ9128_REG_PLLTRI_GEN2, 0, ARRAY_SIZE(phase_select_text), + phase_select_text); + +/* + * In general usage, DVDD could be 1P8V, 3P0V or 3P3V. + * This DVDD undervoltage protection is to prevent from the abnormal power + * lose case while the amplifier is operating. Due to the different DVDD + * application, treat this threshold as a user choosable option. + */ +static const struct soc_enum rtq9128_dvdduv_select_enum = + SOC_ENUM_SINGLE(RTQ9128_REG_PROT_OPT, 6, ARRAY_SIZE(dvdduv_select_text), + dvdduv_select_text); + +static const struct snd_kcontrol_new rtq9128_snd_ctrls[] = { + SOC_SINGLE_TLV("MS Volume", RTQ9128_REG_MS_VOL, 2, 511, 1, dig_tlv), + SOC_SINGLE_TLV("CH1 Volume", RTQ9128_REG_CH1_VOL, 2, 511, 1, dig_tlv), + SOC_SINGLE_TLV("CH2 Volume", RTQ9128_REG_CH2_VOL, 2, 511, 1, dig_tlv), + SOC_SINGLE_TLV("CH3 Volume", RTQ9128_REG_CH3_VOL, 2, 511, 1, dig_tlv), + SOC_SINGLE_TLV("CH4 Volume", RTQ9128_REG_CH4_VOL, 2, 511, 1, dig_tlv), + SOC_SINGLE_TLV("SPK Gain Volume", RTQ9128_REG_MISC, 0, 5, 0, spkgain_tlv), + SOC_SINGLE("PBTL12 Switch", RTQ9128_REG_MISC, 5, 1, 0), + SOC_SINGLE("PBTL34 Switch", RTQ9128_REG_MISC, 4, 1, 0), + SOC_SINGLE("Spread Spectrum Switch", RTQ9128_REG_PWM_SS_OPT, 7, 1, 0), + SOC_SINGLE("SDO Select", RTQ9128_REG_SDO_SEL, 0, 15, 0), + SOC_ENUM("CH1 SI Select", rtq9128_ch1_si_enum), + SOC_ENUM("CH2 SI Select", rtq9128_ch2_si_enum), + SOC_ENUM("CH3 SI Select", rtq9128_ch3_si_enum), + SOC_ENUM("CH4 SI Select", rtq9128_ch4_si_enum), + SOC_ENUM("PWM FREQ Select", rtq9128_pwm_freq_enum), + SOC_ENUM("OUT2 Phase Select", rtq9128_out2_phase_enum), + SOC_ENUM("OUT3 Phase Select", rtq9128_out3_phase_enum), + SOC_ENUM("OUT4 Phase Select", rtq9128_out4_phase_enum), + SOC_ENUM("DVDD UV Threshold Select", rtq9128_dvdduv_select_enum), +}; + +static int rtq9128_dac_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); + unsigned int shift, mask; + int ret; + + dev_dbg(comp->dev, "%s: %s event %d\n", __func__, w->name, event); + + if (strcmp(w->name, "DAC1") == 0) + shift = 6; + else if (strcmp(w->name, "DAC2") == 0) + shift = 4; + else if (strcmp(w->name, "DAC3") == 0) + shift = 2; + else + shift = 0; + + mask = RTQ9128_CHSTAT_VAL_MASK << shift; + + /* Turn channel state to Normal or HiZ */ + ret = snd_soc_component_write_field(comp, RTQ9128_REG_STATE_CTRL, mask, + event != SND_SOC_DAPM_POST_PMU); + if (ret < 0) + return ret; + + /* + * For each channel turns on, HW will trigger DC load detect and DC + * offset calibration, the time is needed for all the actions done. + */ + if (event == SND_SOC_DAPM_POST_PMU) + msleep(25); + + return 0; +} + +static const struct snd_soc_dapm_widget rtq9128_dapm_widgets[] = { + SND_SOC_DAPM_DAC_E("DAC1", NULL, SND_SOC_NOPM, 0, 0, rtq9128_dac_power_event, + SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD), + SND_SOC_DAPM_DAC_E("DAC2", NULL, SND_SOC_NOPM, 0, 0, rtq9128_dac_power_event, + SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD), + SND_SOC_DAPM_DAC_E("DAC3", NULL, SND_SOC_NOPM, 0, 0, rtq9128_dac_power_event, + SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD), + SND_SOC_DAPM_DAC_E("DAC4", NULL, SND_SOC_NOPM, 0, 0, rtq9128_dac_power_event, + SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD), + SND_SOC_DAPM_OUTPUT("OUT1"), + SND_SOC_DAPM_OUTPUT("OUT2"), + SND_SOC_DAPM_OUTPUT("OUT3"), + SND_SOC_DAPM_OUTPUT("OUT4"), +}; + +static const struct snd_soc_dapm_route rtq9128_dapm_routes[] = { + { "DAC1", NULL, "Playback" }, + { "DAC2", NULL, "Playback" }, + { "DAC3", NULL, "Playback" }, + { "DAC4", NULL, "Playback" }, + { "OUT1", NULL, "DAC1" }, + { "OUT2", NULL, "DAC2" }, + { "OUT3", NULL, "DAC3" }, + { "OUT4", NULL, "DAC4" }, + { "Capture", NULL, "DAC1" }, + { "Capture", NULL, "DAC2" }, + { "Capture", NULL, "DAC3" }, + { "Capture", NULL, "DAC4" }, +}; + +static const struct rtq9128_init_reg rtq9128_tka470b_tables[] = { + { 0xA0, 0xEF }, + { 0x0D, 0x00 }, + { 0x03, 0x05 }, + { 0x05, 0x31 }, + { 0x06, 0x23 }, + { 0x70, 0x11 }, + { 0x75, 0x1F }, + { 0xB6, 0x03 }, + { 0xB9, 0x03 }, + { 0xB8, 0x03 }, + { 0xC1, 0xFF }, + { 0xF8, 0x72 }, + { 0x30, 0x180 }, +}; + +static const struct rtq9128_init_reg rtq9128_dh_tables[] = { + { 0x0F, 0x00 }, + { 0x03, 0x0D }, + { 0xB2, 0xFF }, + { 0xB3, 0xFF }, + { 0x30, 0x180 }, + { 0x8A, 0x55 }, + { 0x72, 0x00 }, + { 0xB1, 0xE3 }, +}; + +static const struct rtq9128_init_reg rtq9128_dl_tables[] = { + { 0x0F, 0x00 }, + { 0x03, 0x0D }, + { 0x30, 0x180 }, + { 0x8A, 0x55 }, + { 0x72, 0x00 }, + { 0xB1, 0xE3 }, +}; + +static int rtq9128_component_probe(struct snd_soc_component *comp) +{ + const struct rtq9128_init_reg *table, *curr; + size_t table_size; + unsigned int val; + int i, ret; + + pm_runtime_resume_and_get(comp->dev); + + val = snd_soc_component_read(comp, RTQ9128_REG_EFUSE_DATA); + + switch (FIELD_GET(RTQ9128_DIE_CHECK_MASK, val)) { + case RTQ9128_TKA470B_VAL: + table = rtq9128_tka470b_tables; + table_size = ARRAY_SIZE(rtq9128_tka470b_tables); + break; + case RTQ9128_RTQ9128DH_VAL: + table = rtq9128_dh_tables; + table_size = ARRAY_SIZE(rtq9128_dh_tables); + break; + default: + table = rtq9128_dl_tables; + table_size = ARRAY_SIZE(rtq9128_dl_tables); + break; + } + + for (i = 0, curr = table; i < table_size; i++, curr++) { + ret = snd_soc_component_write(comp, curr->reg, curr->val); + if (ret < 0) + return ret; + } + + pm_runtime_mark_last_busy(comp->dev); + pm_runtime_put(comp->dev); + + return 0; +} + +static const struct snd_soc_component_driver rtq9128_comp_driver = { + .probe = rtq9128_component_probe, + .controls = rtq9128_snd_ctrls, + .num_controls = ARRAY_SIZE(rtq9128_snd_ctrls), + .dapm_widgets = rtq9128_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(rtq9128_dapm_widgets), + .dapm_routes = rtq9128_dapm_routes, + .num_dapm_routes = ARRAY_SIZE(rtq9128_dapm_routes), + .use_pmdown_time = 1, + .endianness = 1, +}; + +static int rtq9128_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) +{ + struct rtq9128_data *data = snd_soc_dai_get_drvdata(dai); + struct snd_soc_component *comp = dai->component; + struct device *dev = dai->dev; + unsigned int audfmt, fmtval; + int ret; + + dev_dbg(dev, "%s: fmt 0x%8x\n", __func__, fmt); + + /* Only support bitclock & framesync as consumer */ + if ((fmt & SND_SOC_DAIFMT_MASTER_MASK) != SND_SOC_DAIFMT_BC_FC) { + dev_err(dev, "Only support BCK and LRCK as consumer\n"); + return -EINVAL; + } + + fmtval = fmt & SND_SOC_DAIFMT_FORMAT_MASK; + if (data->tdm_slots && fmtval != SND_SOC_DAIFMT_DSP_A && fmtval != SND_SOC_DAIFMT_DSP_B) { + dev_err(dev, "TDM is used, format only support DSP_A or DSP_B\n"); + return -EINVAL; + } + + switch (fmtval) { + case SND_SOC_DAIFMT_I2S: + audfmt = 8; + break; + case SND_SOC_DAIFMT_LEFT_J: + audfmt = 9; + break; + case SND_SOC_DAIFMT_RIGHT_J: + audfmt = 10; + break; + case SND_SOC_DAIFMT_DSP_A: + audfmt = data->tdm_slots ? 12 : 11; + break; + case SND_SOC_DAIFMT_DSP_B: + audfmt = data->tdm_slots ? 4 : 3; + break; + default: + dev_err(dev, "Unsupported format 0x%8x\n", fmt); + return -EINVAL; + } + + ret = snd_soc_component_write_field(comp, RTQ9128_REG_I2S_OPT, RTQ9128_AUDFMT_MASK, audfmt); + return ret < 0 ? ret : 0; +} + +static int rtq9128_dai_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask, + unsigned int rx_mask, int slots, int slot_width) +{ + struct rtq9128_data *data = snd_soc_dai_get_drvdata(dai); + struct snd_soc_component *comp = dai->component; + struct device *dev = dai->dev; + unsigned int mask, start_loc; + int i, frame_length, ret; + + dev_dbg(dev, "%s: slot %d slot_width %d, tx/rx mask 0x%x 0x%x\n", __func__, slots, + slot_width, tx_mask, rx_mask); + + if (slots <= 0 || slot_width <= 0 || slot_width % 8) { + dev_err(dev, "Invalid slot numbers (%d) or width (%d)\n", slots, slot_width); + return -EINVAL; + } + + /* HW supported maximum frame length 512 */ + frame_length = slots * slot_width; + if (frame_length > 512) { + dev_err(dev, "frame length exceed the maximum (%d)\n", frame_length); + return -EINVAL; + } + + if (!rx_mask || hweight_long(tx_mask) > slots || hweight_long(rx_mask) > slots || + fls(tx_mask) > slots || fls(rx_mask) > slots) { + dev_err(dev, "Invalid tx/rx mask (0x%x/0x%x)\n", tx_mask, rx_mask); + return -EINVAL; + } + + for (mask = tx_mask, i = 0; i < 4 && mask; i++) { + start_loc = (ffs(mask) - 1) * slot_width / 8; + mask &= ~BIT(ffs(mask) - 1); + + ret = snd_soc_component_write(comp, RTQ9128_REG_TDM_TX_CH1 + i, start_loc); + if (ret < 0) { + dev_err(dev, "Failed to assign tx_loc %d (%d)\n", i, ret); + return ret; + } + } + + for (mask = rx_mask, i = 0; i < 4 && mask; i++) { + start_loc = (ffs(mask) - 1) * slot_width / 8; + mask &= ~BIT(ffs(mask) - 1); + + ret = snd_soc_component_write(comp, RTQ9128_REG_TDM_RX_CH1 + i, start_loc); + if (ret < 0) { + dev_err(dev, "Failed to assign rx_loc %d (%d)\n", i, ret); + return ret; + } + } + + data->tdm_slots = slots; + data->tdm_slot_width = slot_width; + + return 0; +} + +static int rtq9128_dai_hw_params(struct snd_pcm_substream *stream, struct snd_pcm_hw_params *param, + struct snd_soc_dai *dai) +{ + struct rtq9128_data *data = snd_soc_dai_get_drvdata(dai); + unsigned int width, slot_width, bitrate, audbit, dolen; + struct snd_soc_component *comp = dai->component; + struct device *dev = dai->dev; + int ret; + + dev_dbg(dev, "%s: width %d\n", __func__, params_width(param)); + + switch (width = params_width(param)) { + case 16: + audbit = 0; + break; + case 18: + audbit = 1; + break; + case 20: + audbit = 2; + break; + case 24: + case 32: + audbit = 3; + break; + default: + dev_err(dev, "Unsupported width (%d)\n", width); + return -EINVAL; + } + + slot_width = params_physical_width(param); + + if (data->tdm_slots) { + if (slot_width > data->tdm_slot_width) { + dev_err(dev, "slot width is larger than TDM slot width\n"); + return -EINVAL; + } + + /* Check BCK not exceed the maximum supported rate 24.576MHz */ + bitrate = data->tdm_slots * data->tdm_slot_width * params_rate(param); + if (bitrate > 24576000) { + dev_err(dev, "bitrate exceed the maximum (%d)\n", bitrate); + return -EINVAL; + } + + /* If TDM is used, configure slot width as TDM slot witdh */ + slot_width = data->tdm_slot_width; + } + + switch (slot_width) { + case 16: + dolen = 0; + break; + case 24: + dolen = 1; + break; + case 32: + dolen = 2; + break; + default: + dev_err(dev, "Unsupported slot width (%d)\n", slot_width); + return -EINVAL; + } + + ret = snd_soc_component_write_field(comp, RTQ9128_REG_I2S_OPT, RTQ9128_AUDBIT_MASK, audbit); + if (ret < 0) + return ret; + + ret = snd_soc_component_write_field(comp, RTQ9128_REG_SDO_SEL, RTQ9128_DOLEN_MASK, dolen); + return ret < 0 ? ret : 0; +} + +static int rtq9128_dai_mute_stream(struct snd_soc_dai *dai, int mute, int stream) +{ + struct snd_soc_component *comp = dai->component; + struct device *dev = dai->dev; + int ret; + + dev_dbg(dev, "%s: mute (%d), stream (%d)\n", __func__, mute, stream); + + ret = snd_soc_component_write_field(comp, RTQ9128_REG_DSP_EN, RTQ9128_MSMUTE_MASK, + mute ? 1 : 0); + return ret < 0 ? ret : 0; +} + +static const struct snd_soc_dai_ops rtq9128_dai_ops = { + .set_fmt = rtq9128_dai_set_fmt, + .set_tdm_slot = rtq9128_dai_set_tdm_slot, + .hw_params = rtq9128_dai_hw_params, + .mute_stream = rtq9128_dai_mute_stream, + .no_capture_mute = 1, +}; + +#define RTQ9128_FMTS_MASK (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S18_3LE |\ + SNDRV_PCM_FMTBIT_S20_LE | SNDRV_PCM_FMTBIT_S24_LE |\ + SNDRV_PCM_FMTBIT_S32_LE) + +static struct snd_soc_dai_driver rtq9128_dai = { + .name = "rtq9128-aif", + .playback = { + .stream_name = "Playback", + .rates = SNDRV_PCM_RATE_8000_192000, + .formats = RTQ9128_FMTS_MASK, + .channels_min = 1, + .channels_max = 4, + }, + .capture = { + .stream_name = "Capture", + .rates = SNDRV_PCM_RATE_8000_192000, + .formats = RTQ9128_FMTS_MASK, + .channels_min = 1, + .channels_max = 4, + }, + .ops = &rtq9128_dai_ops, + .symmetric_rate = 1, + .symmetric_sample_bits = 1, +}; + +static int rtq9128_probe(struct i2c_client *i2c) +{ + struct device *dev = &i2c->dev; + struct rtq9128_data *data; + struct regmap *regmap; + unsigned int venid; + int ret; + + data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + data->enable = devm_gpiod_get_optional(dev, "enable", GPIOD_OUT_HIGH); + if (IS_ERR(data->enable)) + return dev_err_probe(dev, PTR_ERR(data->enable), "Failed to get 'enable' gpio\n"); + else if (data->enable) + usleep_range(10000, 11000); + + i2c_set_clientdata(i2c, data); + + /* + * Due to the bad design to combine SOFT_RESET bit with other function, + * directly use generic i2c API to trigger SOFT_RESET. + */ + ret = i2c_smbus_write_byte_data(i2c, RTQ9128_REG_MISC, RTQ9128_SOFT_RESET_VAL); + if (ret) + return dev_err_probe(dev, ret, "Failed to trigger software reset\n"); + + /* After trigger soft reset, have to wait 10ms for digital reset done */ + usleep_range(10000, 11000); + + regmap = devm_regmap_init(dev, &rtq9128_regmap_bus, dev, &rtq9128_regmap_config); + if (IS_ERR(regmap)) + return dev_err_probe(dev, PTR_ERR(regmap), "Failed to init regmap\n"); + + ret = regmap_read(regmap, RTQ9128_REG_VENDOR_ID, &venid); + if (ret) + return dev_err_probe(dev, ret, "Failed to get vendor id\n"); + + venid = FIELD_GET(RTQ9128_VENDOR_ID_MASK, venid); + if (venid != RTQ9128_VENDOR_ID_VAL) + return dev_err_probe(dev, -ENODEV, "Vendor ID not match (0x%x)\n", venid); + + pm_runtime_set_active(dev); + pm_runtime_mark_last_busy(dev); + ret = devm_pm_runtime_enable(dev); + if (ret) + return dev_err_probe(dev, ret, "Failed to enable pm runtime\n"); + + return devm_snd_soc_register_component(dev, &rtq9128_comp_driver, &rtq9128_dai, 1); +} + +static int __maybe_unused rtq9128_pm_runtime_suspend(struct device *dev) +{ + struct rtq9128_data *data = dev_get_drvdata(dev); + struct regmap *regmap = dev_get_regmap(dev, NULL); + + /* If 'enable' gpio not specified, change all channels to ultra low quiescent */ + if (!data->enable) + return regmap_write(regmap, RTQ9128_REG_STATE_CTRL, RTQ9128_ALLCH_ULQM_VAL); + + gpiod_set_value_cansleep(data->enable, 0); + + regcache_cache_only(regmap, true); + regcache_mark_dirty(regmap); + + return 0; +} + +static int __maybe_unused rtq9128_pm_runtime_resume(struct device *dev) +{ + struct rtq9128_data *data = dev_get_drvdata(dev); + struct regmap *regmap = dev_get_regmap(dev, NULL); + + /* If 'enable' gpio not specified, change all channels to default Hi-Z */ + if (!data->enable) + return regmap_write(regmap, RTQ9128_REG_STATE_CTRL, RTQ9128_ALLCH_HIZ_VAL); + + gpiod_set_value_cansleep(data->enable, 1); + + /* Wait digital block to be ready */ + usleep_range(10000, 11000); + + regcache_cache_only(regmap, false); + return regcache_sync(regmap); +} + +static const struct dev_pm_ops __maybe_unused rtq9128_pm_ops = { + SET_RUNTIME_PM_OPS(rtq9128_pm_runtime_suspend, rtq9128_pm_runtime_resume, NULL) +}; + +static const struct of_device_id rtq9128_device_table[] = { + { .compatible = "richtek,rtq9128" }, + {} +}; +MODULE_DEVICE_TABLE(of, rtq9128_device_table); + +static struct i2c_driver rtq9128_driver = { + .driver = { + .name = "rtq9128", + .of_match_table = rtq9128_device_table, + .pm = pm_ptr(&rtq9128_pm_ops), + }, + .probe = rtq9128_probe, +}; +module_i2c_driver(rtq9128_driver); + +MODULE_AUTHOR("ChiYuan Huang cy_huang@richtek.com"); +MODULE_DESCRIPTION("RTQ9128 4CH Audio Amplifier Driver"); +MODULE_LICENSE("GPL");