--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * ALSA SoC Texas Instruments TAS67524 Quad-Channel Audio Amplifier
+ *
+ * Copyright (C) 2026 Texas Instruments Incorporated - https://www.ti.com/
+ * Author: Sen Wang <sen@ti.com>
+ */
+
+#include <linux/bitfield.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/i2c.h>
+#include <linux/regmap.h>
+#include <linux/gpio/consumer.h>
+#include <linux/regulator/consumer.h>
+#include <linux/delay.h>
+#include <linux/property.h>
+#include <linux/interrupt.h>
+#include <linux/workqueue.h>
+#include <linux/pm_runtime.h>
+#include <linux/iopoll.h>
+#include <sound/soc.h>
+#include <sound/tlv.h>
+#include <sound/pcm_params.h>
+
+#include "tas675x.h"
+
+#define TAS675X_FAULT_CHECK_INTERVAL_MS 200
+
+enum tas675x_type {
+ TAS67524,
+};
+
+struct tas675x_reg_param {
+ u8 page;
+ u8 reg;
+ u32 val;
+};
+
+struct tas675x_priv {
+ struct device *dev;
+ struct regmap *regmap;
+ enum tas675x_type dev_type;
+ /* Custom regmap lock; protects writes across books */
+ struct mutex io_lock;
+
+ struct gpio_desc *pd_gpio;
+ struct gpio_desc *stby_gpio;
+ struct regulator_bulk_data supplies[2];
+ struct regulator *vbat;
+ bool fast_boot;
+
+ int audio_slot;
+ int llp_slot;
+ int vpredict_slot;
+ int isense_slot;
+ int bclk_offset;
+ int slot_width;
+ unsigned int tx_mask;
+
+ int gpio1_func;
+ int gpio2_func;
+
+ unsigned long active_playback_dais;
+ unsigned long active_capture_dais;
+ unsigned int rate;
+ unsigned int saved_rtldg_en;
+#define TAS675X_DSP_PARAM_NUM 2
+ struct tas675x_reg_param dsp_params[TAS675X_DSP_PARAM_NUM];
+
+ /* Fault monitor, disabled when Fault IRQ is used */
+ struct delayed_work fault_check_work;
+#define TAS675X_FAULT_REGS_NUM 9
+ unsigned int last_status[TAS675X_FAULT_REGS_NUM];
+};
+
+static const char * const tas675x_supply_names[] = {
+ "dvdd", /* Digital power supply */
+ "pvdd", /* Output powerstage supply */
+};
+
+/* Page 1 setup initialization defaults */
+static const struct reg_sequence tas675x_page1_init[] = {
+ REG_SEQ0(TAS675X_PAGE_REG(1, 0xC8), 0x20), /* Charge pump clock */
+ REG_SEQ0(TAS675X_PAGE_REG(1, 0x2F), 0x90), /* VBAT idle */
+ REG_SEQ0(TAS675X_PAGE_REG(1, 0x29), 0x40), /* OC/CBC threshold */
+ REG_SEQ0(TAS675X_PAGE_REG(1, 0x2E), 0x0C), /* OC/CBC config */
+ REG_SEQ0(TAS675X_PAGE_REG(1, 0xC5), 0x02), /* OC/CBC config */
+ REG_SEQ0(TAS675X_PAGE_REG(1, 0xC6), 0x10), /* OC/CBC config */
+ REG_SEQ0(TAS675X_PAGE_REG(1, 0x1F), 0x20), /* OC/CBC config */
+ REG_SEQ0(TAS675X_PAGE_REG(1, 0x16), 0x01), /* OC/CBC config */
+ REG_SEQ0(TAS675X_PAGE_REG(1, 0x1E), 0x04), /* OC/CBC config */
+ REG_SEQ0(TAS675X_PAGE_REG(1, 0xC1), 0x00), /* CH1 DC fault */
+ REG_SEQ0(TAS675X_PAGE_REG(1, 0xC2), 0x04), /* CH2 DC fault */
+ REG_SEQ0(TAS675X_PAGE_REG(1, 0xC3), 0x00), /* CH3 DC fault */
+ REG_SEQ0(TAS675X_PAGE_REG(1, 0xC4), 0x00), /* CH4 DC fault */
+};
+
+static inline const char *tas675x_state_name(unsigned int state)
+{
+ switch (state & 0x0F) {
+ case TAS675X_STATE_DEEPSLEEP: return "DEEPSLEEP";
+ case TAS675X_STATE_LOAD_DIAG: return "LOAD_DIAG";
+ case TAS675X_STATE_SLEEP: return "SLEEP";
+ case TAS675X_STATE_HIZ: return "HIZ";
+ case TAS675X_STATE_PLAY: return "PLAY";
+ case TAS675X_STATE_FAULT: return "FAULT";
+ case TAS675X_STATE_AUTOREC: return "AUTOREC";
+ default: return "UNKNOWN";
+ }
+}
+
+static inline int tas675x_set_state_all(struct tas675x_priv *tas, u8 state)
+{
+ const struct reg_sequence seq[] = {
+ REG_SEQ0(TAS675X_STATE_CTRL_CH1_CH2_REG, state),
+ REG_SEQ0(TAS675X_STATE_CTRL_CH3_CH4_REG, state),
+ };
+
+ return regmap_multi_reg_write(tas->regmap, seq, ARRAY_SIZE(seq));
+}
+
+static inline int tas675x_select_book(struct regmap *regmap, u8 book)
+{
+ int ret;
+
+ /* Reset page to 0 before switching books */
+ ret = regmap_write(regmap, TAS675X_PAGE_CTRL_REG, 0x00);
+ if (!ret)
+ ret = regmap_write(regmap, TAS675X_BOOK_CTRL_REG, book);
+
+ return ret;
+}
+
+/* Raw I2C version of tas675x_select_book, must be called with io_lock held */
+static inline int __tas675x_select_book(struct tas675x_priv *tas, u8 book)
+{
+ struct i2c_client *client = to_i2c_client(tas->dev);
+ int ret;
+
+ /* Reset page to 0 before switching books */
+ ret = i2c_smbus_write_byte_data(client, TAS675X_PAGE_CTRL_REG, 0x00);
+ if (ret)
+ return ret;
+
+ return i2c_smbus_write_byte_data(client, TAS675X_BOOK_CTRL_REG, book);
+}
+
+static int tas675x_dsp_mem_write(struct tas675x_priv *tas, u8 page, u8 reg, u32 val)
+{
+ struct i2c_client *client = to_i2c_client(tas->dev);
+ u8 buf[4];
+ int ret;
+
+ /* DSP registers are 32 bit big-endian */
+ buf[0] = (val >> 24) & 0xFF;
+ buf[1] = (val >> 16) & 0xFF;
+ buf[2] = (val >> 8) & 0xFF;
+ buf[3] = val & 0xFF;
+
+ /*
+ * DSP regs in a different book, therefore block
+ * regmap access before completion.
+ */
+ mutex_lock(&tas->io_lock);
+
+ ret = __tas675x_select_book(tas, TAS675X_BOOK_DSP);
+ if (ret)
+ goto out;
+
+ ret = i2c_smbus_write_byte_data(client, TAS675X_PAGE_CTRL_REG, page);
+ if (ret)
+ goto out;
+
+ ret = i2c_smbus_write_i2c_block_data(client, reg, sizeof(buf), buf);
+
+out:
+ __tas675x_select_book(tas, TAS675X_BOOK_DEFAULT);
+ mutex_unlock(&tas->io_lock);
+
+ return ret;
+}
+
+static int tas675x_dsp_mem_read(struct tas675x_priv *tas, u8 page, u8 reg, u32 *val)
+{
+ struct i2c_client *client = to_i2c_client(tas->dev);
+ u8 buf[4];
+ int ret;
+
+ /*
+ * DSP regs in a different book, therefore block
+ * regmap access before completion.
+ */
+ mutex_lock(&tas->io_lock);
+
+ ret = __tas675x_select_book(tas, TAS675X_BOOK_DSP);
+ if (ret)
+ goto out;
+
+ ret = i2c_smbus_write_byte_data(client, TAS675X_PAGE_CTRL_REG, page);
+ if (ret)
+ goto out;
+
+ ret = i2c_smbus_read_i2c_block_data(client, reg, sizeof(buf), buf);
+ if (ret == sizeof(buf)) {
+ *val = (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3];
+ ret = 0;
+ } else if (ret >= 0) {
+ ret = -EIO;
+ }
+
+out:
+ __tas675x_select_book(tas, TAS675X_BOOK_DEFAULT);
+ mutex_unlock(&tas->io_lock);
+
+ return ret;
+}
+
+static const struct {
+ const char *name;
+ int val;
+} tas675x_gpio_func_map[] = {
+ /* Output functions */
+ { "low", TAS675X_GPIO_SEL_LOW },
+ { "auto-mute", TAS675X_GPIO_SEL_AUTO_MUTE_ALL },
+ { "auto-mute-ch4", TAS675X_GPIO_SEL_AUTO_MUTE_CH4 },
+ { "auto-mute-ch3", TAS675X_GPIO_SEL_AUTO_MUTE_CH3 },
+ { "auto-mute-ch2", TAS675X_GPIO_SEL_AUTO_MUTE_CH2 },
+ { "auto-mute-ch1", TAS675X_GPIO_SEL_AUTO_MUTE_CH1 },
+ { "sdout2", TAS675X_GPIO_SEL_SDOUT2 },
+ { "sdout1", TAS675X_GPIO_SEL_SDOUT1 },
+ { "warn", TAS675X_GPIO_SEL_WARN },
+ { "fault", TAS675X_GPIO_SEL_FAULT },
+ { "clock-sync", TAS675X_GPIO_SEL_CLOCK_SYNC },
+ { "invalid-clock", TAS675X_GPIO_SEL_INVALID_CLK },
+ { "high", TAS675X_GPIO_SEL_HIGH },
+ /* Input functions */
+ { "mute", TAS675X_GPIO_IN_MUTE },
+ { "phase-sync", TAS675X_GPIO_IN_PHASE_SYNC },
+ { "sdin2", TAS675X_GPIO_IN_SDIN2 },
+ { "deep-sleep", TAS675X_GPIO_IN_DEEP_SLEEP },
+ { "hiz", TAS675X_GPIO_IN_HIZ },
+ { "play", TAS675X_GPIO_IN_PLAY },
+ { "sleep", TAS675X_GPIO_IN_SLEEP },
+};
+
+static int tas675x_gpio_func_parse(struct device *dev, const char *propname)
+{
+ const char *str;
+ int i, ret;
+
+ ret = device_property_read_string(dev, propname, &str);
+ if (ret)
+ return -1;
+
+ for (i = 0; i < ARRAY_SIZE(tas675x_gpio_func_map); i++) {
+ if (!strcmp(str, tas675x_gpio_func_map[i].name))
+ return tas675x_gpio_func_map[i].val;
+ }
+
+ dev_warn(dev, "Invalid %s value '%s'\n", propname, str);
+ return -1;
+}
+
+static const struct {
+ unsigned int reg;
+ unsigned int mask;
+} tas675x_gpio_input_table[TAS675X_GPIO_IN_NUM] = {
+ [TAS675X_GPIO_IN_ID_MUTE] = {
+ TAS675X_GPIO_INPUT_MUTE_REG, TAS675X_GPIO_IN_MUTE_MASK },
+ [TAS675X_GPIO_IN_ID_PHASE_SYNC] = {
+ TAS675X_GPIO_INPUT_SYNC_REG, TAS675X_GPIO_IN_SYNC_MASK },
+ [TAS675X_GPIO_IN_ID_SDIN2] = {
+ TAS675X_GPIO_INPUT_SDIN2_REG, TAS675X_GPIO_IN_SDIN2_MASK },
+ [TAS675X_GPIO_IN_ID_DEEP_SLEEP] = {
+ TAS675X_GPIO_INPUT_SLEEP_HIZ_REG, TAS675X_GPIO_IN_DEEP_SLEEP_MASK },
+ [TAS675X_GPIO_IN_ID_HIZ] = {
+ TAS675X_GPIO_INPUT_SLEEP_HIZ_REG, TAS675X_GPIO_IN_HIZ_MASK },
+ [TAS675X_GPIO_IN_ID_PLAY] = {
+ TAS675X_GPIO_INPUT_PLAY_SLEEP_REG, TAS675X_GPIO_IN_PLAY_MASK },
+ [TAS675X_GPIO_IN_ID_SLEEP] = {
+ TAS675X_GPIO_INPUT_PLAY_SLEEP_REG, TAS675X_GPIO_IN_SLEEP_MASK },
+};
+
+static void tas675x_config_gpio_pin(struct regmap *regmap, int func_id,
+ unsigned int out_sel_reg,
+ unsigned int pin_idx,
+ unsigned int *gpio_ctrl)
+{
+ int id;
+
+ if (func_id < 0)
+ return;
+
+ if (func_id & TAS675X_GPIO_FUNC_INPUT) {
+ /* 3-bit mux: 0 = disabled, 0b1 = GPIO1, 0b10 = GPIO2 */
+ id = func_id & ~TAS675X_GPIO_FUNC_INPUT;
+ regmap_update_bits(regmap,
+ tas675x_gpio_input_table[id].reg,
+ tas675x_gpio_input_table[id].mask,
+ (pin_idx + 1) << __ffs(tas675x_gpio_input_table[id].mask));
+ } else {
+ /* Output GPIO, update selection register and enable bit */
+ regmap_write(regmap, out_sel_reg, func_id);
+ *gpio_ctrl |= pin_idx ? TAS675X_GPIO2_OUTPUT_EN : TAS675X_GPIO1_OUTPUT_EN;
+ }
+}
+
+static int tas675x_rtldg_thresh_info(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+ uinfo->count = 1;
+ uinfo->value.integer.min = 0;
+ /* threshold reg ranges up to 24bit */
+ uinfo->value.integer.max = 0x00FFFFFF;
+ return 0;
+}
+
+static int tas675x_set_rtldg_thresh(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *comp = snd_kcontrol_chip(kcontrol);
+ struct tas675x_priv *tas = snd_soc_component_get_drvdata(comp);
+ const struct tas675x_reg_param *t =
+ (const struct tas675x_reg_param *)kcontrol->private_value;
+ u32 val = ucontrol->value.integer.value[0];
+ int ret;
+
+ ret = tas675x_dsp_mem_write(tas, t->page, t->reg, val);
+
+ /* Cache the value */
+ if (!ret) {
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(tas->dsp_params); i++) {
+ if (tas->dsp_params[i].page == t->page &&
+ tas->dsp_params[i].reg == t->reg) {
+ tas->dsp_params[i].val = val;
+ break;
+ }
+ }
+ }
+
+ /* Return 1 to notify change, or propagate error */
+ return ret ? ret : 1;
+}
+
+static int tas675x_get_rtldg_thresh(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *comp = snd_kcontrol_chip(kcontrol);
+ struct tas675x_priv *tas = snd_soc_component_get_drvdata(comp);
+ const struct tas675x_reg_param *t =
+ (const struct tas675x_reg_param *)kcontrol->private_value;
+ u32 val = 0;
+ int ret;
+
+ ret = tas675x_dsp_mem_read(tas, t->page, t->reg, &val);
+ if (!ret)
+ ucontrol->value.integer.value[0] = val;
+
+ return ret;
+}
+
+static const struct tas675x_reg_param tas675x_dsp_defaults[] = {
+ [TAS675X_DSP_PARAM_ID_OL_THRESH] = {
+ TAS675X_DSP_PAGE_RTLDG, TAS675X_DSP_RTLDG_OL_THRESH_REG },
+ [TAS675X_DSP_PARAM_ID_SL_THRESH] = {
+ TAS675X_DSP_PAGE_RTLDG, TAS675X_DSP_RTLDG_SL_THRESH_REG },
+};
+
+static_assert(ARRAY_SIZE(tas675x_dsp_defaults) == TAS675X_DSP_PARAM_NUM);
+
+static int tas675x_set_dcldg_trigger(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *comp = snd_kcontrol_chip(kcontrol);
+ struct tas675x_priv *tas = snd_soc_component_get_drvdata(comp);
+ unsigned int state, state34;
+ int ret;
+
+ if (!ucontrol->value.integer.value[0])
+ return 0;
+
+ if (snd_soc_component_active(comp))
+ return -EBUSY;
+
+ ret = pm_runtime_resume_and_get(tas->dev);
+ if (ret < 0)
+ return ret;
+
+ /*
+ * Abort automatic DC LDG retry loops (startup or init-after-fault)
+ * and clear faults before manual diagnostics.
+ */
+ regmap_update_bits(tas->regmap, TAS675X_DC_LDG_CTRL_REG,
+ TAS675X_LDG_ABORT_BIT | TAS675X_LDG_BYPASS_BIT,
+ TAS675X_LDG_ABORT_BIT | TAS675X_LDG_BYPASS_BIT);
+ regmap_write(tas->regmap, TAS675X_RESET_REG, TAS675X_FAULT_CLEAR);
+
+ /* Wait for LOAD_DIAG to exit */
+ ret = regmap_read_poll_timeout(tas->regmap, TAS675X_STATE_REPORT_CH1_CH2_REG,
+ state, (state & 0x0F) != TAS675X_STATE_LOAD_DIAG &&
+ (state >> 4) != TAS675X_STATE_LOAD_DIAG,
+ TAS675X_POLL_INTERVAL_US,
+ TAS675X_STATE_TRANSITION_TIMEOUT_US);
+ ret |= regmap_read_poll_timeout(tas->regmap, TAS675X_STATE_REPORT_CH3_CH4_REG,
+ state34, (state34 & 0x0F) != TAS675X_STATE_LOAD_DIAG &&
+ (state34 >> 4) != TAS675X_STATE_LOAD_DIAG,
+ TAS675X_POLL_INTERVAL_US,
+ TAS675X_STATE_TRANSITION_TIMEOUT_US);
+ if (ret) {
+ dev_err(tas->dev,
+ "DC LDG: abort timeout (CH1/2=0x%02x [%s/%s], CH3/4=0x%02x [%s/%s])\n",
+ state, tas675x_state_name(state), tas675x_state_name(state >> 4),
+ state34, tas675x_state_name(state34), tas675x_state_name(state34 >> 4));
+ goto out_restore_ldg_ctrl;
+ }
+
+ /* Transition to HIZ state */
+ ret = tas675x_set_state_all(tas, TAS675X_STATE_HIZ_BOTH);
+ if (ret)
+ goto out_restore_ldg_ctrl;
+
+ /* Set LOAD_DIAG state for manual DC LDG */
+ ret = tas675x_set_state_all(tas, TAS675X_STATE_LOAD_DIAG_BOTH);
+ if (ret)
+ goto out_restore_ldg_ctrl;
+
+ /* Wait for device to transition to LOAD_DIAG state */
+ ret = regmap_read_poll_timeout(tas->regmap, TAS675X_STATE_REPORT_CH1_CH2_REG,
+ state, state == TAS675X_STATE_LOAD_DIAG_BOTH,
+ TAS675X_POLL_INTERVAL_US,
+ TAS675X_STATE_TRANSITION_TIMEOUT_US);
+ ret |= regmap_read_poll_timeout(tas->regmap, TAS675X_STATE_REPORT_CH3_CH4_REG,
+ state34, state34 == TAS675X_STATE_LOAD_DIAG_BOTH,
+ TAS675X_POLL_INTERVAL_US,
+ TAS675X_STATE_TRANSITION_TIMEOUT_US);
+ if (ret) {
+ dev_err(tas->dev,
+ "DC LDG: LOAD_DIAG timeout (CH1/2=0x%02x [%s/%s], CH3/4=0x%02x [%s/%s])\n",
+ state, tas675x_state_name(state), tas675x_state_name(state >> 4),
+ state34, tas675x_state_name(state34), tas675x_state_name(state34 >> 4));
+ goto out_restore_hiz;
+ }
+
+ /* Clear ABORT and BYPASS bits to enable manual DC LDG */
+ ret = regmap_update_bits(tas->regmap, TAS675X_DC_LDG_CTRL_REG,
+ TAS675X_LDG_ABORT_BIT | TAS675X_LDG_BYPASS_BIT,
+ 0);
+ if (ret)
+ goto out_restore_hiz;
+
+ dev_dbg(tas->dev, "DC LDG: Started\n");
+
+ /* Poll all channels for SLEEP state */
+ ret = regmap_read_poll_timeout(tas->regmap, TAS675X_STATE_REPORT_CH1_CH2_REG,
+ state, state == TAS675X_STATE_SLEEP_BOTH,
+ TAS675X_POLL_INTERVAL_US,
+ TAS675X_DC_LDG_TIMEOUT_US);
+ ret |= regmap_read_poll_timeout(tas->regmap, TAS675X_STATE_REPORT_CH3_CH4_REG,
+ state34, state34 == TAS675X_STATE_SLEEP_BOTH,
+ TAS675X_POLL_INTERVAL_US,
+ TAS675X_DC_LDG_TIMEOUT_US);
+ if (ret) {
+ dev_err(tas->dev,
+ "DC LDG: SLEEP timeout (CH1/2=0x%02x [%s/%s], CH3/4=0x%02x [%s/%s])\n",
+ state, tas675x_state_name(state), tas675x_state_name(state >> 4),
+ state34, tas675x_state_name(state34), tas675x_state_name(state34 >> 4));
+ goto out_restore_hiz;
+ }
+
+ dev_dbg(tas->dev, "DC LDG: Completed successfully (CH1/2=0x%02x, CH3/4=0x%02x)\n",
+ state, state34);
+
+out_restore_hiz:
+ tas675x_set_state_all(tas, TAS675X_STATE_HIZ_BOTH);
+
+out_restore_ldg_ctrl:
+ regmap_update_bits(tas->regmap, TAS675X_DC_LDG_CTRL_REG,
+ TAS675X_LDG_ABORT_BIT | TAS675X_LDG_BYPASS_BIT,
+ 0);
+
+ pm_runtime_mark_last_busy(tas->dev);
+ pm_runtime_put_autosuspend(tas->dev);
+
+ return ret;
+}
+
+static int tas675x_set_acldg_trigger(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *comp = snd_kcontrol_chip(kcontrol);
+ struct tas675x_priv *tas = snd_soc_component_get_drvdata(comp);
+ unsigned int state, state34;
+ int ret;
+
+ if (!ucontrol->value.integer.value[0])
+ return 0;
+
+ if (snd_soc_component_active(comp))
+ return -EBUSY;
+
+ ret = pm_runtime_resume_and_get(tas->dev);
+ if (ret < 0)
+ return ret;
+
+ /* AC Load Diagnostics requires SLEEP state */
+ ret = tas675x_set_state_all(tas, TAS675X_STATE_SLEEP_BOTH);
+ if (ret) {
+ dev_err(tas->dev, "AC LDG: Failed to set SLEEP state: %d\n", ret);
+ goto out;
+ }
+
+ /* Start AC LDG on all 4 channels (0x0F) */
+ ret = regmap_write(tas->regmap, TAS675X_AC_LDG_CTRL_REG, 0x0F);
+ if (ret) {
+ dev_err(tas->dev, "AC LDG: Failed to start: %d\n", ret);
+ goto out;
+ }
+
+ dev_dbg(tas->dev, "AC LDG: Started\n");
+
+ /* Poll all channels for SLEEP state */
+ ret = regmap_read_poll_timeout(tas->regmap, TAS675X_STATE_REPORT_CH1_CH2_REG,
+ state, (state == TAS675X_STATE_SLEEP_BOTH),
+ TAS675X_POLL_INTERVAL_US,
+ TAS675X_AC_LDG_TIMEOUT_US);
+ if (ret) {
+ dev_err(tas->dev,
+ "AC LDG: CH1/CH2 timeout: %d (state=0x%02x [%s/%s])\n",
+ ret, state, tas675x_state_name(state),
+ tas675x_state_name(state >> 4));
+ regmap_write(tas->regmap, TAS675X_AC_LDG_CTRL_REG, 0x00);
+ goto out;
+ }
+
+ ret = regmap_read_poll_timeout(tas->regmap, TAS675X_STATE_REPORT_CH3_CH4_REG,
+ state34, (state34 == TAS675X_STATE_SLEEP_BOTH),
+ TAS675X_POLL_INTERVAL_US,
+ TAS675X_AC_LDG_TIMEOUT_US);
+ if (ret) {
+ dev_err(tas->dev,
+ "AC LDG: CH3/CH4 timeout: %d (state=0x%02x [%s/%s])\n",
+ ret, state34, tas675x_state_name(state34),
+ tas675x_state_name(state34 >> 4));
+ regmap_write(tas->regmap, TAS675X_AC_LDG_CTRL_REG, 0x00);
+ goto out;
+ }
+
+ dev_dbg(tas->dev, "AC LDG: Completed successfully (CH1/2=0x%02x, CH3/4=0x%02x)\n",
+ state, state34);
+ regmap_write(tas->regmap, TAS675X_AC_LDG_CTRL_REG, 0x00);
+
+out:
+ pm_runtime_mark_last_busy(tas->dev);
+ pm_runtime_put_autosuspend(tas->dev);
+
+ return ret;
+}
+
+static int tas675x_rtldg_impedance_info(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+ uinfo->count = 1;
+ uinfo->value.integer.min = 0;
+ uinfo->value.integer.max = 0xFFFF;
+ return 0;
+}
+
+static int tas675x_get_rtldg_impedance(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *comp = snd_kcontrol_chip(kcontrol);
+ struct tas675x_priv *tas = snd_soc_component_get_drvdata(comp);
+ unsigned int msb_reg = (unsigned int)kcontrol->private_value;
+ u8 buf[2];
+ int ret;
+
+ ret = regmap_bulk_read(tas->regmap, msb_reg, buf, 2);
+ if (ret)
+ return ret;
+
+ ucontrol->value.integer.value[0] = (buf[0] << 8) | buf[1];
+ return 0;
+}
+
+static int tas675x_dc_resistance_info(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ /* 10-bit: 2-bit MSB + 8-bit LSB, 0.1 ohm/code, 0-102.3 ohm */
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+ uinfo->count = 1;
+ uinfo->value.integer.min = 0;
+ uinfo->value.integer.max = 1023;
+ return 0;
+}
+
+static int tas675x_get_dc_resistance(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *comp = snd_kcontrol_chip(kcontrol);
+ struct tas675x_priv *tas = snd_soc_component_get_drvdata(comp);
+ unsigned int lsb_reg = (unsigned int)kcontrol->private_value;
+ unsigned int msb, lsb, shift;
+ int ret;
+
+ ret = regmap_read(tas->regmap, TAS675X_DC_LDG_DCR_MSB_REG, &msb);
+ if (ret)
+ return ret;
+
+ ret = regmap_read(tas->regmap, lsb_reg, &lsb);
+ if (ret)
+ return ret;
+
+ /* 2-bit MSB: CH1=[7:6], CH2=[5:4], CH3=[3:2], CH4=[1:0] */
+ shift = 6 - (lsb_reg - TAS675X_CH1_DC_LDG_DCR_LSB_REG) * 2;
+ msb = (msb >> shift) & 0x3;
+
+ ucontrol->value.integer.value[0] = (msb << 8) | lsb;
+ return 0;
+}
+
+/* Counterparts with read-only access */
+#define SOC_SINGLE_RO(xname, xreg, xshift, xmax) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
+ .name = xname, \
+ .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE, \
+ .info = snd_soc_info_volsw, \
+ .get = snd_soc_get_volsw, \
+ .private_value = SOC_SINGLE_VALUE(xreg, xshift, 0, xmax, 0, 0) }
+#define SOC_DC_RESIST_RO(xname, xlsb_reg) \
+{ .name = xname, \
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
+ .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE, \
+ .info = tas675x_dc_resistance_info, \
+ .get = tas675x_get_dc_resistance, \
+ .private_value = (xlsb_reg) }
+#define SOC_RTLDG_IMP_RO(xname, xreg) \
+{ .name = xname, \
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
+ .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE, \
+ .info = tas675x_rtldg_impedance_info, \
+ .get = tas675x_get_rtldg_impedance, \
+ .private_value = (xreg) }
+
+#define SOC_DSP_THRESH_EXT(xname, xthresh) \
+{ .name = xname, \
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
+ .info = tas675x_rtldg_thresh_info, \
+ .get = tas675x_get_rtldg_thresh, \
+ .put = tas675x_set_rtldg_thresh, \
+ .private_value = (unsigned long)&(xthresh) }
+
+/*
+ * DAC digital volumes. From -103 to 0 dB in 0.5 dB steps, -103.5 dB means mute.
+ * DAC analog gain. From -15.5 to 0 dB in 0.5 dB steps, no mute.
+ */
+static const DECLARE_TLV_DB_SCALE(tas675x_dig_vol_tlv, -10350, 50, 1);
+static const DECLARE_TLV_DB_SCALE(tas675x_ana_gain_tlv, -1550, 50, 0);
+
+static const char * const tas675x_ss_texts[] = {
+ "Disabled", "Triangle", "Random", "Triangle and Random"
+};
+
+static SOC_ENUM_SINGLE_DECL(tas675x_ss_enum, TAS675X_SS_CTRL_REG, 0, tas675x_ss_texts);
+
+static const char * const tas675x_ss_tri_range_texts[] = {
+ "6.5%", "13.5%", "5%", "10%"
+};
+
+static SOC_ENUM_SINGLE_DECL(tas675x_ss_tri_range_enum,
+ TAS675X_SS_RANGE_CTRL_REG, 0,
+ tas675x_ss_tri_range_texts);
+
+static const char * const tas675x_ss_rdm_range_texts[] = {
+ "0.83%", "2.50%", "5.83%", "12.50%", "25.83%"
+};
+
+static SOC_ENUM_SINGLE_DECL(tas675x_ss_rdm_range_enum,
+ TAS675X_SS_RANGE_CTRL_REG, 4,
+ tas675x_ss_rdm_range_texts);
+
+static const char * const tas675x_ss_rdm_dwell_texts[] = {
+ "1/FSS to 2/FSS", "1/FSS to 4/FSS", "1/FSS to 8/FSS", "1/FSS to 15/FSS"
+};
+
+static SOC_ENUM_SINGLE_DECL(tas675x_ss_rdm_dwell_enum,
+ TAS675X_SS_RANGE_CTRL_REG, 2,
+ tas675x_ss_rdm_dwell_texts);
+
+static const char * const tas675x_oc_limit_texts[] = {
+ "Level 4", "Level 3", "Level 2", "Level 1"
+};
+
+static SOC_ENUM_SINGLE_DECL(tas675x_oc_limit_enum, TAS675X_CURRENT_LIMIT_CTRL_REG,
+ 0, tas675x_oc_limit_texts);
+
+static const char * const tas675x_otw_texts[] = {
+ "Disabled", ">95C", ">110C", ">125C", ">135C", ">145C", ">155C", ">165C"
+};
+
+static SOC_ENUM_SINGLE_DECL(tas675x_ch1_otw_enum,
+ TAS675X_OTW_CTRL_CH1_CH2_REG, 4,
+ tas675x_otw_texts);
+static SOC_ENUM_SINGLE_DECL(tas675x_ch2_otw_enum,
+ TAS675X_OTW_CTRL_CH1_CH2_REG, 0,
+ tas675x_otw_texts);
+static SOC_ENUM_SINGLE_DECL(tas675x_ch3_otw_enum,
+ TAS675X_OTW_CTRL_CH3_CH4_REG, 4,
+ tas675x_otw_texts);
+static SOC_ENUM_SINGLE_DECL(tas675x_ch4_otw_enum,
+ TAS675X_OTW_CTRL_CH3_CH4_REG, 0,
+ tas675x_otw_texts);
+
+static const char * const tas675x_dc_ldg_sl_texts[] = {
+ "0.5 Ohm", "1 Ohm", "1.5 Ohm", "2 Ohm", "2.5 Ohm",
+ "3 Ohm", "3.5 Ohm", "4 Ohm", "4.5 Ohm", "5 Ohm"
+};
+
+static SOC_ENUM_SINGLE_DECL(tas675x_ch1_dc_ldg_sl_enum,
+ TAS675X_DC_LDG_SL_CH1_CH2_CTRL_REG, 4,
+ tas675x_dc_ldg_sl_texts);
+static SOC_ENUM_SINGLE_DECL(tas675x_ch2_dc_ldg_sl_enum,
+ TAS675X_DC_LDG_SL_CH1_CH2_CTRL_REG, 0,
+ tas675x_dc_ldg_sl_texts);
+static SOC_ENUM_SINGLE_DECL(tas675x_ch3_dc_ldg_sl_enum,
+ TAS675X_DC_LDG_SL_CH3_CH4_CTRL_REG, 4,
+ tas675x_dc_ldg_sl_texts);
+static SOC_ENUM_SINGLE_DECL(tas675x_ch4_dc_ldg_sl_enum,
+ TAS675X_DC_LDG_SL_CH3_CH4_CTRL_REG, 0,
+ tas675x_dc_ldg_sl_texts);
+
+static const char * const tas675x_dc_slol_ramp_texts[] = {
+ "15 ms", "30 ms", "10 ms", "20 ms"
+};
+
+static SOC_ENUM_SINGLE_DECL(tas675x_dc_slol_ramp_enum,
+ TAS675X_DC_LDG_TIME_CTRL_REG, 6,
+ tas675x_dc_slol_ramp_texts);
+
+static const char * const tas675x_dc_slol_settling_texts[] = {
+ "10 ms", "5 ms", "20 ms", "15 ms"
+};
+
+static SOC_ENUM_SINGLE_DECL(tas675x_dc_slol_settling_enum,
+ TAS675X_DC_LDG_TIME_CTRL_REG, 4,
+ tas675x_dc_slol_settling_texts);
+
+static const char * const tas675x_dc_s2pg_ramp_texts[] = {
+ "5 ms", "2.5 ms", "10 ms", "15 ms"
+};
+
+static SOC_ENUM_SINGLE_DECL(tas675x_dc_s2pg_ramp_enum,
+ TAS675X_DC_LDG_TIME_CTRL_REG, 2,
+ tas675x_dc_s2pg_ramp_texts);
+
+static const char * const tas675x_dc_s2pg_settling_texts[] = {
+ "10 ms", "5 ms", "20 ms", "30 ms"
+};
+
+static SOC_ENUM_SINGLE_DECL(tas675x_dc_s2pg_settling_enum,
+ TAS675X_DC_LDG_TIME_CTRL_REG, 0,
+ tas675x_dc_s2pg_settling_texts);
+
+static const char * const tas675x_dsp_mode_texts[] = {
+ "Normal", "LLP", "FFLP"
+};
+
+static SOC_ENUM_SINGLE_DECL(tas675x_dsp_mode_enum,
+ TAS675X_LL_EN_REG, 0,
+ tas675x_dsp_mode_texts);
+
+static const char * const tas675x_ana_ramp_texts[] = {
+ "15us", "60us", "200us", "400us"
+};
+
+static SOC_ENUM_SINGLE_DECL(tas675x_ana_ramp_enum,
+ TAS675X_ANALOG_GAIN_RAMP_CTRL_REG, 2,
+ tas675x_ana_ramp_texts);
+
+static const char * const tas675x_ramp_rate_texts[] = {
+ "4 FS", "16 FS", "32 FS", "Instant"
+};
+
+static SOC_ENUM_SINGLE_DECL(tas675x_ramp_down_rate_enum,
+ TAS675X_DIG_VOL_RAMP_CTRL_REG, 6,
+ tas675x_ramp_rate_texts);
+static SOC_ENUM_SINGLE_DECL(tas675x_ramp_up_rate_enum,
+ TAS675X_DIG_VOL_RAMP_CTRL_REG, 2,
+ tas675x_ramp_rate_texts);
+
+static const char * const tas675x_ramp_step_texts[] = {
+ "4dB", "2dB", "1dB", "0.5dB"
+};
+
+static SOC_ENUM_SINGLE_DECL(tas675x_ramp_down_step_enum,
+ TAS675X_DIG_VOL_RAMP_CTRL_REG, 4,
+ tas675x_ramp_step_texts);
+static SOC_ENUM_SINGLE_DECL(tas675x_ramp_up_step_enum,
+ TAS675X_DIG_VOL_RAMP_CTRL_REG, 0,
+ tas675x_ramp_step_texts);
+
+static const char * const tas675x_vol_combine_ch12_texts[] = {
+ "Independent", "CH2 follows CH1", "CH1 follows CH2"
+};
+
+static SOC_ENUM_SINGLE_DECL(tas675x_vol_combine_ch12_enum,
+ TAS675X_DIG_VOL_COMBINE_CTRL_REG, 0,
+ tas675x_vol_combine_ch12_texts);
+
+static const char * const tas675x_vol_combine_ch34_texts[] = {
+ "Independent", "CH4 follows CH3", "CH3 follows CH4"
+};
+
+static SOC_ENUM_SINGLE_DECL(tas675x_vol_combine_ch34_enum,
+ TAS675X_DIG_VOL_COMBINE_CTRL_REG, 2,
+ tas675x_vol_combine_ch34_texts);
+
+static const char * const tas675x_auto_mute_time_texts[] = {
+ "11.5ms", "53ms", "106.5ms", "266.5ms",
+ "535ms", "1065ms", "2665ms", "5330ms"
+};
+
+static SOC_ENUM_SINGLE_DECL(tas675x_ch1_mute_time_enum,
+ TAS675X_AUTO_MUTE_TIMING_CH1_CH2_REG, 4,
+ tas675x_auto_mute_time_texts);
+static SOC_ENUM_SINGLE_DECL(tas675x_ch2_mute_time_enum,
+ TAS675X_AUTO_MUTE_TIMING_CH1_CH2_REG, 0,
+ tas675x_auto_mute_time_texts);
+static SOC_ENUM_SINGLE_DECL(tas675x_ch3_mute_time_enum,
+ TAS675X_AUTO_MUTE_TIMING_CH3_CH4_REG, 4,
+ tas675x_auto_mute_time_texts);
+static SOC_ENUM_SINGLE_DECL(tas675x_ch4_mute_time_enum,
+ TAS675X_AUTO_MUTE_TIMING_CH3_CH4_REG, 0,
+ tas675x_auto_mute_time_texts);
+
+/*
+ * ALSA Mixer Controls
+ *
+ * For detailed documentation of each control see:
+ * Documentation/sound/codecs/tas675x.rst
+ */
+static const struct snd_kcontrol_new tas675x_snd_controls[] = {
+ /* Volume & Gain Control */
+ SOC_DOUBLE_R_TLV("Analog Playback Volume", TAS675X_ANALOG_GAIN_CH1_CH2_REG,
+ TAS675X_ANALOG_GAIN_CH3_CH4_REG, 1, 0x1F, 1, tas675x_ana_gain_tlv),
+ SOC_ENUM("Analog Gain Ramp Step", tas675x_ana_ramp_enum),
+ SOC_SINGLE_RANGE_TLV("CH1 Digital Playback Volume",
+ TAS675X_DIG_VOL_CH1_REG, 0, 0x30, 0xFF, 1,
+ tas675x_dig_vol_tlv),
+ SOC_SINGLE_RANGE_TLV("CH2 Digital Playback Volume",
+ TAS675X_DIG_VOL_CH2_REG, 0, 0x30, 0xFF, 1,
+ tas675x_dig_vol_tlv),
+ SOC_SINGLE_RANGE_TLV("CH3 Digital Playback Volume",
+ TAS675X_DIG_VOL_CH3_REG, 0, 0x30, 0xFF, 1,
+ tas675x_dig_vol_tlv),
+ SOC_SINGLE_RANGE_TLV("CH4 Digital Playback Volume",
+ TAS675X_DIG_VOL_CH4_REG, 0, 0x30, 0xFF, 1,
+ tas675x_dig_vol_tlv),
+ SOC_ENUM("Volume Ramp Down Rate", tas675x_ramp_down_rate_enum),
+ SOC_ENUM("Volume Ramp Down Step", tas675x_ramp_down_step_enum),
+ SOC_ENUM("Volume Ramp Up Rate", tas675x_ramp_up_rate_enum),
+ SOC_ENUM("Volume Ramp Up Step", tas675x_ramp_up_step_enum),
+ SOC_ENUM("CH1/2 Volume Combine", tas675x_vol_combine_ch12_enum),
+ SOC_ENUM("CH3/4 Volume Combine", tas675x_vol_combine_ch34_enum),
+
+ /* Auto Mute & Silence Detection */
+ SOC_SINGLE("CH1 Auto Mute Switch", TAS675X_AUTO_MUTE_EN_REG, 0, 1, 0),
+ SOC_SINGLE("CH2 Auto Mute Switch", TAS675X_AUTO_MUTE_EN_REG, 1, 1, 0),
+ SOC_SINGLE("CH3 Auto Mute Switch", TAS675X_AUTO_MUTE_EN_REG, 2, 1, 0),
+ SOC_SINGLE("CH4 Auto Mute Switch", TAS675X_AUTO_MUTE_EN_REG, 3, 1, 0),
+ SOC_SINGLE("Auto Mute Combine Switch", TAS675X_AUTO_MUTE_EN_REG, 4, 1, 0),
+ SOC_ENUM("CH1 Auto Mute Time", tas675x_ch1_mute_time_enum),
+ SOC_ENUM("CH2 Auto Mute Time", tas675x_ch2_mute_time_enum),
+ SOC_ENUM("CH3 Auto Mute Time", tas675x_ch3_mute_time_enum),
+ SOC_ENUM("CH4 Auto Mute Time", tas675x_ch4_mute_time_enum),
+
+ /* Clock & EMI Management */
+ SOC_ENUM("Spread Spectrum Mode", tas675x_ss_enum),
+ SOC_ENUM("SS Triangle Range", tas675x_ss_tri_range_enum),
+ SOC_ENUM("SS Random Range", tas675x_ss_rdm_range_enum),
+ SOC_ENUM("SS Random Dwell Range", tas675x_ss_rdm_dwell_enum),
+ SOC_SINGLE("SS Triangle Dwell Min", TAS675X_SS_DWELL_CTRL_REG, 4, 15, 0),
+ SOC_SINGLE("SS Triangle Dwell Max", TAS675X_SS_DWELL_CTRL_REG, 0, 15, 0),
+
+ /* Hardware Protection */
+ SOC_SINGLE("OTSD Auto Recovery Switch", TAS675X_OTSD_RECOVERY_EN_REG, 1, 1, 0),
+ SOC_ENUM("Overcurrent Limit Level", tas675x_oc_limit_enum),
+ SOC_ENUM("CH1 OTW Threshold", tas675x_ch1_otw_enum),
+ SOC_ENUM("CH2 OTW Threshold", tas675x_ch2_otw_enum),
+ SOC_ENUM("CH3 OTW Threshold", tas675x_ch3_otw_enum),
+ SOC_ENUM("CH4 OTW Threshold", tas675x_ch4_otw_enum),
+
+ /* DSP Signal Path & Mode */
+ SOC_ENUM("DSP Signal Path Mode", tas675x_dsp_mode_enum),
+
+ /* DC Load Diagnostics */
+ {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "DC LDG Trigger",
+ .access = SNDRV_CTL_ELEM_ACCESS_WRITE,
+ .info = snd_ctl_boolean_mono_info,
+ .put = tas675x_set_dcldg_trigger,
+ },
+ SOC_SINGLE("DC LDG Auto Diagnostics Switch", TAS675X_DC_LDG_CTRL_REG, 0, 1, 1),
+ SOC_SINGLE("CH1 LO LDG Switch", TAS675X_DC_LDG_LO_CTRL_REG, 3, 1, 0),
+ SOC_SINGLE("CH2 LO LDG Switch", TAS675X_DC_LDG_LO_CTRL_REG, 2, 1, 0),
+ SOC_SINGLE("CH3 LO LDG Switch", TAS675X_DC_LDG_LO_CTRL_REG, 1, 1, 0),
+ SOC_SINGLE("CH4 LO LDG Switch", TAS675X_DC_LDG_LO_CTRL_REG, 0, 1, 0),
+ SOC_ENUM("DC LDG SLOL Ramp Time", tas675x_dc_slol_ramp_enum),
+ SOC_ENUM("DC LDG SLOL Settling Time", tas675x_dc_slol_settling_enum),
+ SOC_ENUM("DC LDG S2PG Ramp Time", tas675x_dc_s2pg_ramp_enum),
+ SOC_ENUM("DC LDG S2PG Settling Time", tas675x_dc_s2pg_settling_enum),
+ SOC_ENUM("CH1 DC LDG SL Threshold", tas675x_ch1_dc_ldg_sl_enum),
+ SOC_ENUM("CH2 DC LDG SL Threshold", tas675x_ch2_dc_ldg_sl_enum),
+ SOC_ENUM("CH3 DC LDG SL Threshold", tas675x_ch3_dc_ldg_sl_enum),
+ SOC_ENUM("CH4 DC LDG SL Threshold", tas675x_ch4_dc_ldg_sl_enum),
+ SOC_SINGLE_RO("DC LDG Result", TAS675X_DC_LDG_RESULT_REG, 0, 0xFF),
+ SOC_SINGLE_RO("CH1 DC LDG Report", TAS675X_DC_LDG_REPORT_CH1_CH2_REG, 4, 0x0F),
+ SOC_SINGLE_RO("CH2 DC LDG Report", TAS675X_DC_LDG_REPORT_CH1_CH2_REG, 0, 0x0F),
+ SOC_SINGLE_RO("CH3 DC LDG Report", TAS675X_DC_LDG_REPORT_CH3_CH4_REG, 4, 0x0F),
+ SOC_SINGLE_RO("CH4 DC LDG Report", TAS675X_DC_LDG_REPORT_CH3_CH4_REG, 0, 0x0F),
+ SOC_SINGLE_RO("CH1 LO LDG Report", TAS675X_DC_LDG_RESULT_REG, 7, 1),
+ SOC_SINGLE_RO("CH2 LO LDG Report", TAS675X_DC_LDG_RESULT_REG, 6, 1),
+ SOC_SINGLE_RO("CH3 LO LDG Report", TAS675X_DC_LDG_RESULT_REG, 5, 1),
+ SOC_SINGLE_RO("CH4 LO LDG Report", TAS675X_DC_LDG_RESULT_REG, 4, 1),
+ SOC_DC_RESIST_RO("CH1 DC Resistance", TAS675X_CH1_DC_LDG_DCR_LSB_REG),
+ SOC_DC_RESIST_RO("CH2 DC Resistance", TAS675X_CH2_DC_LDG_DCR_LSB_REG),
+ SOC_DC_RESIST_RO("CH3 DC Resistance", TAS675X_CH3_DC_LDG_DCR_LSB_REG),
+ SOC_DC_RESIST_RO("CH4 DC Resistance", TAS675X_CH4_DC_LDG_DCR_LSB_REG),
+
+ /* AC Load Diagnostics */
+ {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "AC LDG Trigger",
+ .access = SNDRV_CTL_ELEM_ACCESS_WRITE,
+ .info = snd_ctl_boolean_mono_info,
+ .put = tas675x_set_acldg_trigger,
+ },
+ SOC_SINGLE("AC LDG Gain", TAS675X_AC_LDG_CTRL_REG, 4, 1, 0),
+ SOC_SINGLE("AC LDG Test Frequency", TAS675X_AC_LDG_FREQ_CTRL_REG, 0, 0xFF, 0),
+ SOC_SINGLE_RO("CH1 AC LDG Real", TAS675X_AC_LDG_REPORT_CH1_R_REG, 0, 0xFF),
+ SOC_SINGLE_RO("CH1 AC LDG Imag", TAS675X_AC_LDG_REPORT_CH1_I_REG, 0, 0xFF),
+ SOC_SINGLE_RO("CH2 AC LDG Real", TAS675X_AC_LDG_REPORT_CH2_R_REG, 0, 0xFF),
+ SOC_SINGLE_RO("CH2 AC LDG Imag", TAS675X_AC_LDG_REPORT_CH2_I_REG, 0, 0xFF),
+ SOC_SINGLE_RO("CH3 AC LDG Real", TAS675X_AC_LDG_REPORT_CH3_R_REG, 0, 0xFF),
+ SOC_SINGLE_RO("CH3 AC LDG Imag", TAS675X_AC_LDG_REPORT_CH3_I_REG, 0, 0xFF),
+ SOC_SINGLE_RO("CH4 AC LDG Real", TAS675X_AC_LDG_REPORT_CH4_R_REG, 0, 0xFF),
+ SOC_SINGLE_RO("CH4 AC LDG Imag", TAS675X_AC_LDG_REPORT_CH4_I_REG, 0, 0xFF),
+
+ /* Temperature and Voltage Monitoring */
+ SOC_SINGLE_RO("PVDD Sense", TAS675X_PVDD_SENSE_REG, 0, 0xFF),
+ SOC_SINGLE_RO("Global Temperature", TAS675X_TEMP_GLOBAL_REG, 0, 0xFF),
+ SOC_SINGLE_RO("CH1 Temperature Range", TAS675X_TEMP_CH1_CH2_REG, 6, 3),
+ SOC_SINGLE_RO("CH2 Temperature Range", TAS675X_TEMP_CH1_CH2_REG, 4, 3),
+ SOC_SINGLE_RO("CH3 Temperature Range", TAS675X_TEMP_CH3_CH4_REG, 2, 3),
+ SOC_SINGLE_RO("CH4 Temperature Range", TAS675X_TEMP_CH3_CH4_REG, 0, 3),
+
+ /* Speaker Protection & Detection */
+ SOC_SINGLE("Tweeter Detection Switch", TAS675X_TWEETER_DETECT_CTRL_REG, 0, 1, 1),
+ SOC_SINGLE("Tweeter Detect Threshold", TAS675X_TWEETER_DETECT_THRESH_REG, 0, 0xFF, 0),
+ SOC_SINGLE_RO("CH1 Tweeter Detect Report", TAS675X_TWEETER_REPORT_REG, 3, 1),
+ SOC_SINGLE_RO("CH2 Tweeter Detect Report", TAS675X_TWEETER_REPORT_REG, 2, 1),
+ SOC_SINGLE_RO("CH3 Tweeter Detect Report", TAS675X_TWEETER_REPORT_REG, 1, 1),
+ SOC_SINGLE_RO("CH4 Tweeter Detect Report", TAS675X_TWEETER_REPORT_REG, 0, 1),
+
+ /*
+ * Unavailable in LLP, available in Normal & FFLP
+ */
+ SOC_SINGLE("Thermal Foldback Switch", TAS675X_DSP_CTRL_REG, 0, 1, 0),
+ SOC_SINGLE("PVDD Foldback Switch", TAS675X_DSP_CTRL_REG, 4, 1, 0),
+ SOC_SINGLE("DC Blocker Bypass Switch", TAS675X_DC_BLOCK_BYP_REG, 0, 1, 0),
+ SOC_SINGLE("Clip Detect Switch", TAS675X_CLIP_DETECT_CTRL_REG, 6, 1, 0),
+ SOC_SINGLE("Audio SDOUT Switch", TAS675X_DSP_CTRL_REG, 5, 1, 0),
+
+ /*
+ * Unavailable in both FFLP and LLP, Normal mode only
+ */
+ /* Real-Time Load Diagnostics */
+ SOC_SINGLE("CH1 RTLDG Switch", TAS675X_RTLDG_EN_REG, 3, 1, 0),
+ SOC_SINGLE("CH2 RTLDG Switch", TAS675X_RTLDG_EN_REG, 2, 1, 0),
+ SOC_SINGLE("CH3 RTLDG Switch", TAS675X_RTLDG_EN_REG, 1, 1, 0),
+ SOC_SINGLE("CH4 RTLDG Switch", TAS675X_RTLDG_EN_REG, 0, 1, 0),
+ SOC_SINGLE("RTLDG Clip Mask Switch", TAS675X_RTLDG_EN_REG, 4, 1, 0),
+ SOC_SINGLE("ISENSE Calibration Switch", TAS675X_ISENSE_CAL_REG, 3, 1, 0),
+ SOC_DSP_THRESH_EXT("RTLDG Open Load Threshold",
+ tas675x_dsp_defaults[TAS675X_DSP_PARAM_ID_OL_THRESH]),
+ SOC_DSP_THRESH_EXT("RTLDG Short Load Threshold",
+ tas675x_dsp_defaults[TAS675X_DSP_PARAM_ID_SL_THRESH]),
+ SOC_RTLDG_IMP_RO("CH1 RTLDG Impedance", TAS675X_CH1_RTLDG_IMP_MSB_REG),
+ SOC_RTLDG_IMP_RO("CH2 RTLDG Impedance", TAS675X_CH2_RTLDG_IMP_MSB_REG),
+ SOC_RTLDG_IMP_RO("CH3 RTLDG Impedance", TAS675X_CH3_RTLDG_IMP_MSB_REG),
+ SOC_RTLDG_IMP_RO("CH4 RTLDG Impedance", TAS675X_CH4_RTLDG_IMP_MSB_REG),
+};
+
+static const struct snd_kcontrol_new tas675x_audio_path_switch =
+ SOC_DAPM_SINGLE("Switch", SND_SOC_NOPM, 0, 1, 1);
+
+static const struct snd_kcontrol_new tas675x_anc_path_switch =
+ SOC_DAPM_SINGLE("Switch", SND_SOC_NOPM, 0, 1, 1);
+
+static const struct snd_soc_dapm_widget tas675x_dapm_widgets[] = {
+ SND_SOC_DAPM_SUPPLY("Analog Core", SND_SOC_NOPM, 0, 0, NULL, 0),
+ SND_SOC_DAPM_SUPPLY("SDOUT Vpredict", SND_SOC_NOPM, 0, 0, NULL, 0),
+ SND_SOC_DAPM_SUPPLY("SDOUT Isense", SND_SOC_NOPM, 0, 0, NULL, 0),
+
+ SND_SOC_DAPM_DAC("Audio DAC", "Playback", SND_SOC_NOPM, 0, 0),
+ SND_SOC_DAPM_DAC("ANC DAC", "ANC Playback", SND_SOC_NOPM, 0, 0),
+ SND_SOC_DAPM_ADC("Feedback ADC", "Feedback Capture", SND_SOC_NOPM, 0, 0),
+
+ SND_SOC_DAPM_SWITCH("Audio Path", SND_SOC_NOPM, 0, 0,
+ &tas675x_audio_path_switch),
+ SND_SOC_DAPM_SWITCH("ANC Path", SND_SOC_NOPM, 0, 0,
+ &tas675x_anc_path_switch),
+
+ /*
+ * Even though all channels are coupled in terms of power control,
+ * use logical outputs for each channel to allow independent routing
+ * and DAPM controls if needed.
+ */
+ SND_SOC_DAPM_OUTPUT("OUT_CH1"),
+ SND_SOC_DAPM_OUTPUT("OUT_CH2"),
+ SND_SOC_DAPM_OUTPUT("OUT_CH3"),
+ SND_SOC_DAPM_OUTPUT("OUT_CH4"),
+ SND_SOC_DAPM_INPUT("SPEAKER_LOAD"),
+};
+
+static const struct snd_soc_dapm_route tas675x_dapm_routes[] = {
+ { "Audio DAC", NULL, "Analog Core" },
+ { "Audio Path", "Switch", "Audio DAC" },
+ { "OUT_CH1", NULL, "Audio Path" },
+ { "OUT_CH2", NULL, "Audio Path" },
+ { "OUT_CH3", NULL, "Audio Path" },
+ { "OUT_CH4", NULL, "Audio Path" },
+
+ { "ANC DAC", NULL, "Analog Core" },
+ { "ANC Path", "Switch", "ANC DAC" },
+ { "OUT_CH1", NULL, "ANC Path" },
+ { "OUT_CH2", NULL, "ANC Path" },
+ { "OUT_CH3", NULL, "ANC Path" },
+ { "OUT_CH4", NULL, "ANC Path" },
+
+ { "Feedback ADC", NULL, "Analog Core" },
+ { "Feedback ADC", NULL, "SDOUT Vpredict" },
+ { "Feedback ADC", NULL, "SDOUT Isense" },
+ { "Feedback ADC", NULL, "SPEAKER_LOAD" },
+};
+
+static void tas675x_program_slot_offsets(struct tas675x_priv *tas,
+ int dai_id, int slot_width)
+{
+ int offset = 0;
+
+ switch (dai_id) {
+ case 0:
+ /* Standard Audio on SDIN */
+ if (tas->audio_slot >= 0)
+ offset = tas->audio_slot * slot_width;
+ else if (tas->tx_mask)
+ offset = __ffs(tas->tx_mask) * slot_width;
+ else
+ return;
+ offset += tas->bclk_offset;
+ regmap_update_bits(tas->regmap, TAS675X_SDIN_OFFSET_MSB_REG,
+ TAS675X_SDIN_AUDIO_OFF_MSB_MASK,
+ FIELD_PREP(TAS675X_SDIN_AUDIO_OFF_MSB_MASK, offset >> 8));
+ regmap_write(tas->regmap, TAS675X_SDIN_AUDIO_OFFSET_REG,
+ offset & 0xFF);
+ break;
+ case 1:
+ /*
+ * Low-Latency Playback on SDIN, **only** enabled in LLP mode
+ * and to be mixed with main audio before output amplification
+ * to achieve ANC/RNC.
+ */
+ if (tas->llp_slot >= 0)
+ offset = tas->llp_slot * slot_width;
+ else if (tas->tx_mask)
+ offset = __ffs(tas->tx_mask) * slot_width;
+ else
+ return;
+ offset += tas->bclk_offset;
+ regmap_update_bits(tas->regmap, TAS675X_SDIN_OFFSET_MSB_REG,
+ TAS675X_SDIN_LL_OFF_MSB_MASK,
+ FIELD_PREP(TAS675X_SDIN_LL_OFF_MSB_MASK, offset >> 8));
+ regmap_write(tas->regmap, TAS675X_SDIN_LL_OFFSET_REG,
+ offset & 0xFF);
+ break;
+ case 2:
+ /* SDOUT Data Output (Vpredict + Isense feedback) */
+ if (!tas->slot_width)
+ break;
+ if (tas->vpredict_slot >= 0) {
+ offset = tas->vpredict_slot * slot_width;
+ offset += tas->bclk_offset;
+ regmap_update_bits(tas->regmap, TAS675X_SDOUT_OFFSET_MSB_REG,
+ TAS675X_SDOUT_VP_OFF_MSB_MASK,
+ FIELD_PREP(TAS675X_SDOUT_VP_OFF_MSB_MASK, offset >> 8));
+ regmap_write(tas->regmap, TAS675X_VPREDICT_OFFSET_REG,
+ offset & 0xFF);
+ }
+ if (tas->isense_slot >= 0) {
+ offset = tas->isense_slot * slot_width;
+ offset += tas->bclk_offset;
+ regmap_update_bits(tas->regmap, TAS675X_SDOUT_OFFSET_MSB_REG,
+ TAS675X_SDOUT_IS_OFF_MSB_MASK,
+ FIELD_PREP(TAS675X_SDOUT_IS_OFF_MSB_MASK, offset >> 8));
+ regmap_write(tas->regmap, TAS675X_ISENSE_OFFSET_REG,
+ offset & 0xFF);
+ }
+ break;
+ }
+
+ if (offset > 511)
+ dev_warn(tas->dev,
+ "DAI %d slot offset %d exceeds 511 SCLK limit\n",
+ dai_id, offset);
+}
+
+static int tas675x_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_component *component = dai->component;
+ struct tas675x_priv *tas = snd_soc_component_get_drvdata(component);
+ unsigned int rate = params_rate(params);
+ u8 word_length;
+
+ /*
+ * Single clock domain: SDIN and SDOUT share one SCLK/FSYNC pair,
+ * so all active DAIs must use the same sample rate.
+ */
+ if ((tas->active_playback_dais || tas->active_capture_dais) &&
+ tas->rate && tas->rate != rate) {
+ dev_err(component->dev,
+ "Rate %u conflicts with active rate %u\n",
+ rate, tas->rate);
+ return -EINVAL;
+ }
+
+ switch (params_width(params)) {
+ case 16:
+ word_length = TAS675X_WL_16BIT;
+ break;
+ case 20:
+ word_length = TAS675X_WL_20BIT;
+ break;
+ case 24:
+ word_length = TAS675X_WL_24BIT;
+ break;
+ case 32:
+ word_length = TAS675X_WL_32BIT;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+ /*
+ * RTLDG is not supported above 96kHz. Auto-disable to
+ * prevent DSP overload and restore when rate drops back.
+ */
+ if (rate > 96000) {
+ unsigned int val;
+
+ regmap_read(component->regmap, TAS675X_RTLDG_EN_REG,
+ &val);
+ if (val & TAS675X_RTLDG_CH_EN_MASK) {
+ tas->saved_rtldg_en = val;
+ dev_dbg(component->dev,
+ "Sample rate %dHz > 96kHz: Auto-disabling RTLDG\n",
+ rate);
+ regmap_update_bits(component->regmap,
+ TAS675X_RTLDG_EN_REG,
+ TAS675X_RTLDG_CH_EN_MASK,
+ 0x00);
+ }
+ } else if (tas->saved_rtldg_en) {
+ unsigned int cur;
+
+ /*
+ * Respect overrides and only restore if RTLDG is still auto-disabled
+ */
+ regmap_read(component->regmap, TAS675X_RTLDG_EN_REG,
+ &cur);
+ if (!(cur & TAS675X_RTLDG_CH_EN_MASK)) {
+ dev_dbg(component->dev,
+ "Restoring RTLDG config after high-rate stream\n");
+ regmap_update_bits(component->regmap,
+ TAS675X_RTLDG_EN_REG,
+ TAS675X_RTLDG_CH_EN_MASK,
+ TAS675X_RTLDG_CH_EN_MASK &
+ tas->saved_rtldg_en);
+ }
+ tas->saved_rtldg_en = 0;
+ }
+
+ /* Set SDIN word length (audio path + low-latency path) */
+ regmap_update_bits(component->regmap, TAS675X_SDIN_CTRL_REG,
+ TAS675X_SDIN_WL_MASK,
+ FIELD_PREP(TAS675X_SDIN_AUDIO_WL_MASK, word_length) |
+ FIELD_PREP(TAS675X_SDIN_LL_WL_MASK, word_length));
+ } else {
+ /* Set SDOUT word length (VPREDICT + ISENSE) for capture */
+ regmap_update_bits(component->regmap, TAS675X_SDOUT_CTRL_REG,
+ TAS675X_SDOUT_WL_MASK,
+ FIELD_PREP(TAS675X_SDOUT_VP_WL_MASK, word_length) |
+ FIELD_PREP(TAS675X_SDOUT_IS_WL_MASK, word_length));
+ }
+
+ tas675x_program_slot_offsets(tas, dai->id,
+ tas->slot_width ?: params_width(params));
+
+ tas->rate = rate;
+
+ return 0;
+}
+
+static int tas675x_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
+{
+ struct snd_soc_component *component = dai->component;
+ struct tas675x_priv *tas = snd_soc_component_get_drvdata(component);
+ bool tdm_mode = false, i2s_mode = false;
+
+ /* Enforce Clocking Direction (Codec is strictly a consumer) */
+ switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
+ case SND_SOC_DAIFMT_BC_FC:
+ break;
+ default:
+ dev_err(component->dev, "Unsupported clock provider format\n");
+ return -EINVAL;
+ }
+
+ /* SCLK polarity: NB_NF or IB_NF only (no FSYNC inversion support) */
+ switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+ case SND_SOC_DAIFMT_NB_NF:
+ regmap_update_bits(component->regmap, TAS675X_SCLK_INV_CTRL_REG,
+ TAS675X_SCLK_INV_MASK, 0x00);
+ break;
+ case SND_SOC_DAIFMT_IB_NF:
+ regmap_update_bits(component->regmap, TAS675X_SCLK_INV_CTRL_REG,
+ TAS675X_SCLK_INV_MASK, TAS675X_SCLK_INV_MASK);
+ break;
+ default:
+ dev_err(component->dev, "Unsupported clock inversion\n");
+ return -EINVAL;
+ }
+
+ /* Configure Audio Format and TDM Enable */
+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_I2S:
+ i2s_mode = true;
+ tas->bclk_offset = 0;
+ regmap_update_bits(component->regmap, TAS675X_AUDIO_IF_CTRL_REG,
+ TAS675X_TDM_EN_BIT | TAS675X_SAP_FMT_MASK |
+ TAS675X_FS_PULSE_MASK,
+ TAS675X_SAP_FMT_I2S);
+ regmap_update_bits(component->regmap, TAS675X_SDOUT_CTRL_REG,
+ TAS675X_SDOUT_SELECT_MASK,
+ TAS675X_SDOUT_SELECT_NON_TDM);
+ break;
+ case SND_SOC_DAIFMT_RIGHT_J:
+ tas->bclk_offset = 0;
+ regmap_update_bits(component->regmap, TAS675X_AUDIO_IF_CTRL_REG,
+ TAS675X_TDM_EN_BIT | TAS675X_SAP_FMT_MASK |
+ TAS675X_FS_PULSE_MASK,
+ TAS675X_SAP_FMT_RIGHT_J);
+ regmap_update_bits(component->regmap, TAS675X_SDOUT_CTRL_REG,
+ TAS675X_SDOUT_SELECT_MASK,
+ TAS675X_SDOUT_SELECT_NON_TDM);
+ break;
+ case SND_SOC_DAIFMT_LEFT_J:
+ tas->bclk_offset = 0;
+ regmap_update_bits(component->regmap, TAS675X_AUDIO_IF_CTRL_REG,
+ TAS675X_TDM_EN_BIT | TAS675X_SAP_FMT_MASK |
+ TAS675X_FS_PULSE_MASK,
+ TAS675X_SAP_FMT_LEFT_J);
+ regmap_update_bits(component->regmap, TAS675X_SDOUT_CTRL_REG,
+ TAS675X_SDOUT_SELECT_MASK,
+ TAS675X_SDOUT_SELECT_NON_TDM);
+ break;
+ case SND_SOC_DAIFMT_DSP_A:
+ tdm_mode = true;
+ tas->bclk_offset = 1;
+ regmap_update_bits(component->regmap, TAS675X_AUDIO_IF_CTRL_REG,
+ TAS675X_TDM_EN_BIT | TAS675X_SAP_FMT_MASK |
+ TAS675X_FS_PULSE_MASK,
+ TAS675X_TDM_EN_BIT | TAS675X_SAP_FMT_TDM |
+ TAS675X_FS_PULSE_SHORT);
+ regmap_update_bits(component->regmap, TAS675X_SDOUT_CTRL_REG,
+ TAS675X_SDOUT_SELECT_MASK,
+ TAS675X_SDOUT_SELECT_TDM_SDOUT1);
+ break;
+ case SND_SOC_DAIFMT_DSP_B:
+ tdm_mode = true;
+ tas->bclk_offset = 0;
+ regmap_update_bits(component->regmap, TAS675X_AUDIO_IF_CTRL_REG,
+ TAS675X_TDM_EN_BIT | TAS675X_SAP_FMT_MASK |
+ TAS675X_FS_PULSE_MASK,
+ TAS675X_TDM_EN_BIT | TAS675X_SAP_FMT_TDM |
+ TAS675X_FS_PULSE_SHORT);
+ regmap_update_bits(component->regmap, TAS675X_SDOUT_CTRL_REG,
+ TAS675X_SDOUT_SELECT_MASK,
+ TAS675X_SDOUT_SELECT_TDM_SDOUT1);
+ break;
+ default:
+ dev_err(component->dev, "Unsupported DAI format\n");
+ return -EINVAL;
+ }
+
+ /* Setup Vpredict and Isense outputs */
+ if (dai->id == 2) {
+ unsigned int sdout_en = 0;
+
+ if (tdm_mode) {
+ /* TDM: Vpredict and Isense may coexist on separate slots */
+ if (tas->vpredict_slot >= 0)
+ sdout_en |= TAS675X_SDOUT_EN_VPREDICT;
+ if (tas->isense_slot >= 0)
+ sdout_en |= TAS675X_SDOUT_EN_ISENSE;
+ regmap_update_bits(component->regmap,
+ TAS675X_SDOUT_EN_REG,
+ TAS675X_SDOUT_EN_VPREDICT |
+ TAS675X_SDOUT_EN_ISENSE,
+ sdout_en);
+ if (tas->vpredict_slot >= 0 && tas->isense_slot >= 0 &&
+ abs(tas->vpredict_slot - tas->isense_slot) < 4)
+ dev_warn(component->dev,
+ "ti,vpredict-slot-no and ti,isense-slot-no overlaps (each occupies 4 consecutive slots)\n");
+ } else if (i2s_mode) {
+ /* I2S: only one source at a time; Vpredict takes priority */
+ if (tas->vpredict_slot >= 0)
+ sdout_en = TAS675X_SDOUT_NON_TDM_SEL_VPREDICT |
+ TAS675X_SDOUT_EN_NON_TDM_ALL;
+ else if (tas->isense_slot >= 0)
+ sdout_en = TAS675X_SDOUT_NON_TDM_SEL_ISENSE |
+ TAS675X_SDOUT_EN_NON_TDM_ALL;
+ regmap_update_bits(component->regmap,
+ TAS675X_SDOUT_EN_REG,
+ TAS675X_SDOUT_NON_TDM_SEL_MASK |
+ TAS675X_SDOUT_EN_NON_TDM_ALL,
+ sdout_en);
+ if (sdout_en &&
+ tas->gpio1_func != TAS675X_GPIO_SEL_SDOUT2 &&
+ tas->gpio2_func != TAS675X_GPIO_SEL_SDOUT2)
+ dev_warn(component->dev,
+ "sdout enabled in I2S mode but no GPIO configured as SDOUT2; Ch3/Ch4 will be absent\n");
+ }
+ }
+
+ return 0;
+}
+
+static int tas675x_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
+ unsigned int rx_mask, int slots, int slot_width)
+{
+ struct tas675x_priv *tas = snd_soc_component_get_drvdata(dai->component);
+
+ if (slots == 0) {
+ tas->slot_width = 0;
+ tas->tx_mask = 0;
+ return 0;
+ }
+
+ /* No rx_mask as hardware does not support channel muxing for capture */
+ tas->slot_width = slot_width;
+ tas->tx_mask = tx_mask;
+ return 0;
+}
+
+static int tas675x_mute_stream(struct snd_soc_dai *dai, int mute, int direction)
+{
+ struct snd_soc_component *component = dai->component;
+ struct tas675x_priv *tas = snd_soc_component_get_drvdata(component);
+ unsigned int discard;
+ int ret;
+
+ if (direction == SNDRV_PCM_STREAM_CAPTURE) {
+ if (mute)
+ clear_bit(dai->id, &tas->active_capture_dais);
+ else
+ set_bit(dai->id, &tas->active_capture_dais);
+ return 0;
+ }
+
+ /*
+ * Track which playback DAIs are active.
+ * The TAS675x has two playback DAIs (main audio and LLP).
+ * Only transition to SLEEP when ALL are muted.
+ */
+ if (mute)
+ clear_bit(dai->id, &tas->active_playback_dais);
+ else
+ set_bit(dai->id, &tas->active_playback_dais);
+
+ /* Last playback stream */
+ if (mute && !tas->active_playback_dais) {
+ ret = tas675x_set_state_all(tas, TAS675X_STATE_SLEEP_BOTH);
+ regmap_read(tas->regmap, TAS675X_CLK_FAULT_LATCHED_REG, &discard);
+ return ret;
+ }
+
+ return tas675x_set_state_all(tas,
+ tas->active_playback_dais ?
+ TAS675X_STATE_PLAY_BOTH :
+ TAS675X_STATE_SLEEP_BOTH);
+}
+
+static const struct snd_soc_dai_ops tas675x_dai_ops = {
+ .hw_params = tas675x_hw_params,
+ .set_fmt = tas675x_set_fmt,
+ .set_tdm_slot = tas675x_set_tdm_slot,
+ .mute_stream = tas675x_mute_stream,
+};
+
+static struct snd_soc_dai_driver tas675x_dais[] = {
+ {
+ .name = "tas675x-audio",
+ .id = 0,
+ .playback = {
+ .stream_name = "Playback",
+ .channels_min = 2,
+ .channels_max = 4,
+ .rates = SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |
+ SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_192000,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_LE |
+ SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE,
+ },
+ .ops = &tas675x_dai_ops,
+ },
+ /* Only available when Low Latency Path (LLP) is enabled */
+ {
+ .name = "tas675x-anc",
+ .id = 1,
+ .playback = {
+ .stream_name = "ANC Playback",
+ .channels_min = 2,
+ .channels_max = 4,
+ .rates = SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_LE |
+ SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE,
+ },
+ .ops = &tas675x_dai_ops,
+ },
+ {
+ .name = "tas675x-feedback",
+ .id = 2,
+ .capture = {
+ .stream_name = "Feedback Capture",
+ .channels_min = 2,
+ .channels_max = 8,
+ .rates = SNDRV_PCM_RATE_48000,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_LE |
+ SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE,
+ },
+ .ops = &tas675x_dai_ops,
+ }
+};
+
+/*
+ * Enable regulators and release hardware reset GPIOs.
+ * The device is not I2C-accessible until this returns.
+ */
+static int tas675x_hw_enable(struct tas675x_priv *tas)
+{
+ int ret;
+
+ ret = regulator_bulk_enable(ARRAY_SIZE(tas->supplies), tas->supplies);
+ if (ret) {
+ dev_err(tas->dev, "Failed to enable regulators: %d\n", ret);
+ return ret;
+ }
+
+ if (!IS_ERR(tas->vbat)) {
+ ret = regulator_enable(tas->vbat);
+ if (ret) {
+ dev_err(tas->dev, "Failed to enable vbat: %d\n", ret);
+ regulator_bulk_disable(ARRAY_SIZE(tas->supplies), tas->supplies);
+ return ret;
+ }
+ }
+
+ if (tas->pd_gpio && tas->stby_gpio) {
+ /*
+ * Independent Pin Control
+ * Deassert PD first to boot digital, then STBY for analog.
+ */
+ /* Min 4ms digital boot wait */
+ gpiod_set_value_cansleep(tas->pd_gpio, 0);
+ usleep_range(4000, 5000);
+
+ /* ~2ms analog stabilization */
+ gpiod_set_value_cansleep(tas->stby_gpio, 0);
+ usleep_range(2000, 3000);
+ } else if (tas->pd_gpio) {
+ /*
+ * Simultaneous Pin Release
+ * STBY tied to PD or hardwired HIGH.
+ */
+ /* 6ms wait for simultaneous release transition */
+ gpiod_set_value_cansleep(tas->pd_gpio, 0);
+ usleep_range(6000, 7000);
+ } else {
+ /*
+ * PD hardwired, device in DEEP_SLEEP.
+ * Digital core already booted, I2C active. Deassert STBY
+ * to bring up the analog output stage.
+ */
+ /* ~2ms analog stabilization */
+ gpiod_set_value_cansleep(tas->stby_gpio, 0);
+ usleep_range(2000, 3000);
+ }
+
+ return 0;
+}
+
+static void tas675x_hw_disable(struct tas675x_priv *tas)
+{
+ if (tas->stby_gpio)
+ gpiod_set_value_cansleep(tas->stby_gpio, 1);
+
+ if (tas->pd_gpio)
+ gpiod_set_value_cansleep(tas->pd_gpio, 1);
+
+ /*
+ * Hold PD/STBY asserted for at least 10ms
+ * before removing PVDD, VBAT or DVDD.
+ */
+ usleep_range(10000, 11000);
+
+ if (!IS_ERR(tas->vbat))
+ regulator_disable(tas->vbat);
+
+ regulator_bulk_disable(ARRAY_SIZE(tas->supplies), tas->supplies);
+}
+
+/*
+ * Write device start-up defaults.
+ * Must be called after tas675x_hw_enable() and after regcache is enabled.
+ */
+static int tas675x_init_device(struct tas675x_priv *tas)
+{
+ struct regmap *regmap = tas->regmap;
+ unsigned int val;
+ int ret, i;
+
+ /* Clear POR fault flag to prevent IRQ storm */
+ regmap_read(regmap, TAS675X_POWER_FAULT_LATCHED_REG, &val);
+
+ /* Bypass DC Load Diagnostics for fast boot */
+ if (tas->fast_boot)
+ regmap_update_bits(regmap, TAS675X_DC_LDG_CTRL_REG,
+ TAS675X_LDG_ABORT_BIT | TAS675X_LDG_BYPASS_BIT,
+ TAS675X_LDG_ABORT_BIT | TAS675X_LDG_BYPASS_BIT);
+
+ tas675x_select_book(regmap, TAS675X_BOOK_DEFAULT);
+
+ /* Enter setup mode */
+ ret = regmap_write(regmap, TAS675X_SETUP_REG1, TAS675X_SETUP_ENTER_VAL1);
+ if (ret)
+ goto err;
+ ret = regmap_write(regmap, TAS675X_SETUP_REG2, TAS675X_SETUP_ENTER_VAL2);
+ if (ret)
+ goto err;
+
+ /* Set all channels to Sleep (required before Page 1 config) */
+ tas675x_set_state_all(tas, TAS675X_STATE_SLEEP_BOTH);
+
+ /* Set DAC clock per TRM startup script */
+ regmap_write(regmap, TAS675X_DAC_CLK_REG, 0x00);
+
+ /*
+ * Switch to Page 1 for safety-critical OC/CBC configuration,
+ * while bypassing regcache. (Page 1 not accessible post setup)
+ */
+ regcache_cache_bypass(regmap, true);
+ ret = regmap_multi_reg_write(regmap, tas675x_page1_init,
+ ARRAY_SIZE(tas675x_page1_init));
+ regcache_cache_bypass(regmap, false);
+ if (ret)
+ goto err_setup;
+
+ /* Resync regmap's cached page selector */
+ regmap_write(regmap, TAS675X_PAGE_CTRL_REG, 0x00);
+
+ /* Exit setup mode */
+ regmap_write(regmap, TAS675X_SETUP_REG1, TAS675X_SETUP_EXIT_VAL);
+ regmap_write(regmap, TAS675X_SETUP_REG2, TAS675X_SETUP_EXIT_VAL);
+
+ /* Write DSP parameters if cached */
+ for (i = 0; i < ARRAY_SIZE(tas->dsp_params); i++) {
+ if (tas->dsp_params[i].val)
+ tas675x_dsp_mem_write(tas,
+ tas->dsp_params[i].page,
+ tas->dsp_params[i].reg,
+ tas->dsp_params[i].val);
+ }
+
+ /*
+ * Configure fault and warning event routing:
+ *
+ * ROUTING_1: CP fault/UVLO latch, OUTM soft short latch
+ * ROUTING_2: CBC latch, OTSD latch, OTSD, power fault
+ * ROUTING_3: CBC latch, OTSD latch, power latch, DC LDG,
+ * OTSD, power warnings
+ * ROUTING_4: OC latch, DC latch, protection shutdown
+ * OTW latch, OTW, clip latch
+ * ROUTING_5: clock latch+non-latch, RTLDG latch
+ * CBC warning, clip warning
+ */
+ regmap_write(regmap, TAS675X_REPORT_ROUTING_1_REG, 0x70);
+ regmap_write(regmap, TAS675X_REPORT_ROUTING_2_REG, 0xA3);
+ regmap_write(regmap, TAS675X_REPORT_ROUTING_3_REG, 0xBB);
+ regmap_write(regmap, TAS675X_REPORT_ROUTING_4_REG, 0x7E);
+ regmap_write(regmap, TAS675X_REPORT_ROUTING_5_REG, 0xF3);
+
+ /* Configure GPIO pins if specified in DT */
+ if (tas->gpio1_func >= 0 || tas->gpio2_func >= 0) {
+ unsigned int gpio_ctrl = TAS675X_GPIO_CTRL_RSTVAL;
+
+ tas675x_config_gpio_pin(regmap, tas->gpio1_func,
+ TAS675X_GPIO1_OUTPUT_SEL_REG,
+ 0, &gpio_ctrl);
+ tas675x_config_gpio_pin(regmap, tas->gpio2_func,
+ TAS675X_GPIO2_OUTPUT_SEL_REG,
+ 1, &gpio_ctrl);
+ regmap_write(regmap, TAS675X_GPIO_CTRL_REG, gpio_ctrl);
+ }
+
+ /* Clear fast boot bits */
+ if (tas->fast_boot)
+ regmap_update_bits(regmap, TAS675X_DC_LDG_CTRL_REG,
+ TAS675X_LDG_ABORT_BIT | TAS675X_LDG_BYPASS_BIT,
+ 0);
+
+ /* Clear any stale faults from the boot sequence */
+ regmap_read(regmap, TAS675X_POWER_FAULT_STATUS_1_REG, &val);
+ regmap_read(regmap, TAS675X_POWER_FAULT_LATCHED_REG, &val);
+ regmap_read(regmap, TAS675X_CLK_FAULT_LATCHED_REG, &val);
+ regmap_write(regmap, TAS675X_RESET_REG, TAS675X_FAULT_CLEAR);
+
+ return 0;
+
+err_setup:
+ regmap_write(regmap, TAS675X_SETUP_REG1, TAS675X_SETUP_EXIT_VAL);
+ regmap_write(regmap, TAS675X_SETUP_REG2, TAS675X_SETUP_EXIT_VAL);
+err:
+ dev_err(tas->dev, "Init device failed: %d\n", ret);
+ return ret;
+}
+
+static void tas675x_power_off(struct tas675x_priv *tas)
+{
+ regcache_cache_only(tas->regmap, true);
+ regcache_mark_dirty(tas->regmap);
+ tas675x_hw_disable(tas);
+}
+
+static int tas675x_power_on(struct tas675x_priv *tas)
+{
+ int ret;
+
+ ret = tas675x_hw_enable(tas);
+ if (ret)
+ return ret;
+
+ regcache_cache_only(tas->regmap, false);
+ regcache_mark_dirty(tas->regmap);
+
+ ret = tas675x_init_device(tas);
+ if (ret)
+ goto err_disable;
+
+ ret = regcache_sync(tas->regmap);
+ if (ret) {
+ dev_err(tas->dev, "Failed to sync regcache: %d\n", ret);
+ goto err_disable;
+ }
+
+ /* Reset fault tracking */
+ memset(tas->last_status, 0, sizeof(tas->last_status));
+
+ return 0;
+
+err_disable:
+ tas675x_power_off(tas);
+ return ret;
+}
+
+static int tas675x_runtime_suspend(struct device *dev)
+{
+ struct tas675x_priv *tas = dev_get_drvdata(dev);
+
+ disable_delayed_work_sync(&tas->fault_check_work);
+ tas675x_set_state_all(tas, TAS675X_STATE_SLEEP_BOTH);
+
+ return 0;
+}
+
+static int tas675x_runtime_resume(struct device *dev)
+{
+ struct tas675x_priv *tas = dev_get_drvdata(dev);
+
+ tas675x_set_state_all(tas, TAS675X_STATE_SLEEP_BOTH);
+
+ if (!to_i2c_client(dev)->irq) {
+ enable_delayed_work(&tas->fault_check_work);
+ schedule_delayed_work(&tas->fault_check_work,
+ msecs_to_jiffies(TAS675X_FAULT_CHECK_INTERVAL_MS));
+ }
+
+ return 0;
+}
+
+static int tas675x_system_suspend(struct device *dev)
+{
+ struct tas675x_priv *tas = dev_get_drvdata(dev);
+ int ret;
+
+ ret = tas675x_runtime_suspend(dev);
+ if (ret)
+ return ret;
+
+ if (to_i2c_client(dev)->irq)
+ disable_irq(to_i2c_client(dev)->irq);
+
+ tas675x_power_off(tas);
+ return 0;
+}
+
+static int tas675x_system_resume(struct device *dev)
+{
+ struct tas675x_priv *tas = dev_get_drvdata(dev);
+ int ret;
+
+ ret = tas675x_power_on(tas);
+ if (ret)
+ return ret;
+
+ if (to_i2c_client(dev)->irq)
+ enable_irq(to_i2c_client(dev)->irq);
+
+ return tas675x_runtime_resume(dev);
+}
+
+static const struct snd_soc_component_driver soc_codec_dev_tas675x = {
+ .controls = tas675x_snd_controls,
+ .num_controls = ARRAY_SIZE(tas675x_snd_controls),
+ .dapm_widgets = tas675x_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(tas675x_dapm_widgets),
+ .dapm_routes = tas675x_dapm_routes,
+ .num_dapm_routes = ARRAY_SIZE(tas675x_dapm_routes),
+ .endianness = 1,
+};
+
+/* Fault register flags */
+#define TAS675X_FAULT_CRITICAL BIT(0) /* causes FAULT state, FAULT_CLEAR required */
+#define TAS675X_FAULT_TRACK BIT(1) /* track last value, only log on change */
+#define TAS675X_FAULT_ACTIVE BIT(2) /* skip when no stream is active */
+
+struct tas675x_fault_reg {
+ unsigned int reg;
+ unsigned int flags;
+ const char *name;
+};
+
+static const struct tas675x_fault_reg tas675x_fault_table[] = {
+ /* Critical */
+ { TAS675X_OTSD_LATCHED_REG, TAS675X_FAULT_CRITICAL | TAS675X_FAULT_TRACK,
+ "Overtemperature Shutdown" },
+ { TAS675X_OC_DC_FAULT_LATCHED_REG, TAS675X_FAULT_CRITICAL | TAS675X_FAULT_TRACK,
+ "Overcurrent / DC Fault" },
+ { TAS675X_RTLDG_OL_SL_FAULT_LATCHED_REG, TAS675X_FAULT_CRITICAL | TAS675X_FAULT_TRACK,
+ "Real-Time Load Diagnostic Fault" },
+ { TAS675X_CBC_FAULT_WARN_LATCHED_REG, TAS675X_FAULT_CRITICAL | TAS675X_FAULT_TRACK,
+ "CBC Fault/Warning" },
+ /* Warning */
+ { TAS675X_POWER_FAULT_STATUS_1_REG, TAS675X_FAULT_TRACK,
+ "CP / OUTM Fault" },
+ { TAS675X_POWER_FAULT_LATCHED_REG, TAS675X_FAULT_TRACK,
+ "Power Fault" },
+ { TAS675X_CLK_FAULT_LATCHED_REG, TAS675X_FAULT_TRACK | TAS675X_FAULT_ACTIVE,
+ "Clock Fault" },
+ { TAS675X_OTW_LATCHED_REG, TAS675X_FAULT_TRACK,
+ "Overtemperature Warning" },
+ { TAS675X_CLIP_WARN_LATCHED_REG, TAS675X_FAULT_ACTIVE,
+ "Clip Warning" },
+};
+
+static_assert(ARRAY_SIZE(tas675x_fault_table) == TAS675X_FAULT_REGS_NUM);
+
+/*
+ * Read and log all latched fault registers.
+ * Shared by both the polled fault_check_work and IRQ handler paths
+ * (which are mutually exclusive, only one is active per device).
+ * Returns true if any fault register needs to be cleared.
+ *
+ * For deciphering fault messages, see "Fault Monitoring" in
+ * Documentation/sound/codecs/tas675x.rst
+ */
+static bool tas675x_check_faults(struct tas675x_priv *tas)
+{
+ struct device *dev = tas->dev;
+ bool needs_clear = false;
+ unsigned int reg;
+ int i, ret;
+
+ for (i = 0; i < ARRAY_SIZE(tas675x_fault_table); i++) {
+ const struct tas675x_fault_reg *f = &tas675x_fault_table[i];
+
+ ret = regmap_read(tas->regmap, f->reg, ®);
+ if (ret) {
+ if (f->flags & TAS675X_FAULT_CRITICAL) {
+ dev_err(dev, "failed to read %s: %d\n", f->name, ret);
+ return needs_clear;
+ }
+ continue;
+ }
+
+ if (reg)
+ needs_clear = true;
+
+ /* Skip logging stream-dependent events when no stream is active */
+ if ((f->flags & TAS675X_FAULT_ACTIVE) &&
+ !READ_ONCE(tas->active_playback_dais) &&
+ !READ_ONCE(tas->active_capture_dais))
+ continue;
+
+ /* Log on change or on every non-zero read */
+ if (reg && (!(f->flags & TAS675X_FAULT_TRACK) ||
+ reg != tas->last_status[i])) {
+ if (f->flags & TAS675X_FAULT_CRITICAL)
+ dev_crit(dev, "%s Latched: 0x%02x\n", f->name, reg);
+ else
+ dev_warn(dev, "%s Latched: 0x%02x\n", f->name, reg);
+ }
+
+ if (f->flags & TAS675X_FAULT_TRACK)
+ tas->last_status[i] = reg;
+ }
+
+ return needs_clear;
+}
+
+static void tas675x_fault_check_work(struct work_struct *work)
+{
+ struct tas675x_priv *tas = container_of(work, struct tas675x_priv,
+ fault_check_work.work);
+
+ if (tas675x_check_faults(tas))
+ regmap_write(tas->regmap, TAS675X_RESET_REG, TAS675X_FAULT_CLEAR);
+
+ schedule_delayed_work(&tas->fault_check_work,
+ msecs_to_jiffies(TAS675X_FAULT_CHECK_INTERVAL_MS));
+}
+
+static irqreturn_t tas675x_irq_handler(int irq, void *data)
+{
+ struct tas675x_priv *tas = data;
+ irqreturn_t ret = IRQ_NONE;
+
+ if (pm_runtime_resume_and_get(tas->dev) < 0)
+ return IRQ_NONE;
+
+ if (tas675x_check_faults(tas)) {
+ regmap_write(tas->regmap, TAS675X_RESET_REG, TAS675X_FAULT_CLEAR);
+ ret = IRQ_HANDLED;
+ }
+
+ pm_runtime_mark_last_busy(tas->dev);
+ pm_runtime_put_autosuspend(tas->dev);
+ return ret;
+}
+
+static const struct reg_default tas675x_reg_defaults[] = {
+ { TAS675X_PAGE_CTRL_REG, 0x00 },
+ { TAS675X_OUTPUT_CTRL_REG, 0x00 },
+ { TAS675X_STATE_CTRL_CH1_CH2_REG, TAS675X_STATE_SLEEP_BOTH },
+ { TAS675X_STATE_CTRL_CH3_CH4_REG, TAS675X_STATE_SLEEP_BOTH },
+ { TAS675X_ISENSE_CTRL_REG, 0x0F },
+ { TAS675X_DC_DETECT_CTRL_REG, 0x00 },
+ { TAS675X_SCLK_INV_CTRL_REG, 0x00 },
+ { TAS675X_AUDIO_IF_CTRL_REG, 0x00 },
+ { TAS675X_SDIN_CTRL_REG, 0x0A },
+ { TAS675X_SDOUT_CTRL_REG, 0x1A },
+ { TAS675X_SDIN_OFFSET_MSB_REG, 0x00 },
+ { TAS675X_SDIN_AUDIO_OFFSET_REG, 0x00 },
+ { TAS675X_SDIN_LL_OFFSET_REG, 0x60 },
+ { TAS675X_SDIN_CH_SWAP_REG, 0x00 },
+ { TAS675X_SDOUT_OFFSET_MSB_REG, 0xCF },
+ { TAS675X_VPREDICT_OFFSET_REG, 0xFF },
+ { TAS675X_ISENSE_OFFSET_REG, 0x00 },
+ { TAS675X_SDOUT_EN_REG, 0x00 },
+ { TAS675X_LL_EN_REG, 0x00 },
+ { TAS675X_RTLDG_EN_REG, 0x10 },
+ { TAS675X_DC_BLOCK_BYP_REG, 0x00 },
+ { TAS675X_DSP_CTRL_REG, 0x00 },
+ { TAS675X_PAGE_AUTO_INC_REG, 0x00 },
+ { TAS675X_DIG_VOL_CH1_REG, 0x30 },
+ { TAS675X_DIG_VOL_CH2_REG, 0x30 },
+ { TAS675X_DIG_VOL_CH3_REG, 0x30 },
+ { TAS675X_DIG_VOL_CH4_REG, 0x30 },
+ { TAS675X_DIG_VOL_RAMP_CTRL_REG, 0x77 },
+ { TAS675X_DIG_VOL_COMBINE_CTRL_REG, 0x00 },
+ { TAS675X_AUTO_MUTE_EN_REG, 0x00 },
+ { TAS675X_AUTO_MUTE_TIMING_CH1_CH2_REG, 0x00 },
+ { TAS675X_AUTO_MUTE_TIMING_CH3_CH4_REG, 0x00 },
+ { TAS675X_ANALOG_GAIN_CH1_CH2_REG, 0x00 },
+ { TAS675X_ANALOG_GAIN_CH3_CH4_REG, 0x00 },
+ { TAS675X_ANALOG_GAIN_RAMP_CTRL_REG, 0x00 },
+ { TAS675X_PULSE_INJECTION_EN_REG, 0x03 },
+ { TAS675X_CBC_CTRL_REG, 0x07 },
+ { TAS675X_CURRENT_LIMIT_CTRL_REG, 0x00 },
+ { TAS675X_ISENSE_CAL_REG, 0x00 },
+ { TAS675X_PWM_PHASE_CTRL_REG, 0x00 },
+ { TAS675X_SS_CTRL_REG, 0x00 },
+ { TAS675X_SS_RANGE_CTRL_REG, 0x00 },
+ { TAS675X_SS_DWELL_CTRL_REG, 0x00 },
+ { TAS675X_RAMP_PHASE_CTRL_GPO_REG, 0x00 },
+ { TAS675X_PWM_PHASE_M_CTRL_CH1_REG, 0x00 },
+ { TAS675X_PWM_PHASE_M_CTRL_CH2_REG, 0x00 },
+ { TAS675X_PWM_PHASE_M_CTRL_CH3_REG, 0x00 },
+ { TAS675X_PWM_PHASE_M_CTRL_CH4_REG, 0x00 },
+ { TAS675X_DC_LDG_CTRL_REG, 0x00 },
+ { TAS675X_DC_LDG_LO_CTRL_REG, 0x00 },
+ { TAS675X_DC_LDG_TIME_CTRL_REG, 0x00 },
+ { TAS675X_DC_LDG_SL_CH1_CH2_CTRL_REG, 0x11 },
+ { TAS675X_DC_LDG_SL_CH3_CH4_CTRL_REG, 0x11 },
+ { TAS675X_AC_LDG_CTRL_REG, 0x10 },
+ { TAS675X_TWEETER_DETECT_CTRL_REG, 0x08 },
+ { TAS675X_TWEETER_DETECT_THRESH_REG, 0x00 },
+ { TAS675X_AC_LDG_FREQ_CTRL_REG, 0xC8 },
+ { TAS675X_REPORT_ROUTING_1_REG, 0x00 },
+ { TAS675X_OTSD_RECOVERY_EN_REG, 0x00 },
+ { TAS675X_REPORT_ROUTING_2_REG, 0xA2 },
+ { TAS675X_REPORT_ROUTING_3_REG, 0x00 },
+ { TAS675X_REPORT_ROUTING_4_REG, 0x06 },
+ { TAS675X_CLIP_DETECT_CTRL_REG, 0x00 },
+ { TAS675X_REPORT_ROUTING_5_REG, 0x00 },
+ { TAS675X_GPIO1_OUTPUT_SEL_REG, 0x00 },
+ { TAS675X_GPIO2_OUTPUT_SEL_REG, 0x00 },
+ { TAS675X_GPIO_CTRL_REG, TAS675X_GPIO_CTRL_RSTVAL },
+ { TAS675X_OTW_CTRL_CH1_CH2_REG, 0x11 },
+ { TAS675X_OTW_CTRL_CH3_CH4_REG, 0x11 },
+};
+
+static bool tas675x_is_readable_register(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case TAS675X_RESET_REG:
+ return false;
+ default:
+ return true;
+ }
+}
+
+static bool tas675x_is_volatile_register(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case TAS675X_RESET_REG:
+ case TAS675X_BOOK_CTRL_REG:
+ case TAS675X_AUTO_MUTE_STATUS_REG:
+ case TAS675X_STATE_REPORT_CH1_CH2_REG:
+ case TAS675X_STATE_REPORT_CH3_CH4_REG:
+ case TAS675X_PVDD_SENSE_REG:
+ case TAS675X_TEMP_GLOBAL_REG:
+ case TAS675X_TEMP_CH1_CH2_REG:
+ case TAS675X_TEMP_CH3_CH4_REG:
+ case TAS675X_FS_MON_REG:
+ case TAS675X_SCLK_MON_REG:
+ case TAS675X_POWER_FAULT_STATUS_1_REG:
+ case TAS675X_POWER_FAULT_STATUS_2_REG:
+ case TAS675X_OT_FAULT_REG:
+ case TAS675X_OTW_STATUS_REG:
+ case TAS675X_CLIP_WARN_STATUS_REG:
+ case TAS675X_CBC_WARNING_STATUS_REG:
+ case TAS675X_POWER_FAULT_LATCHED_REG:
+ case TAS675X_OTSD_LATCHED_REG:
+ case TAS675X_OTW_LATCHED_REG:
+ case TAS675X_CLIP_WARN_LATCHED_REG:
+ case TAS675X_CLK_FAULT_LATCHED_REG:
+ case TAS675X_RTLDG_OL_SL_FAULT_LATCHED_REG:
+ case TAS675X_CBC_FAULT_WARN_LATCHED_REG:
+ case TAS675X_OC_DC_FAULT_LATCHED_REG:
+ case TAS675X_WARN_OT_MAX_FLAG_REG:
+ case TAS675X_DC_LDG_REPORT_CH1_CH2_REG ... TAS675X_TWEETER_REPORT_REG:
+ case TAS675X_CH1_RTLDG_IMP_MSB_REG ... TAS675X_CH4_DC_LDG_DCR_LSB_REG:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static const struct regmap_range_cfg tas675x_ranges[] = {
+ {
+ .name = "Pages",
+ .range_min = 0,
+ .range_max = TAS675X_PAGE_SIZE * TAS675X_PAGE_SIZE - 1,
+ .selector_reg = TAS675X_PAGE_CTRL_REG,
+ .selector_mask = 0xff,
+ .selector_shift = 0,
+ .window_start = 0,
+ .window_len = TAS675X_PAGE_SIZE,
+ },
+};
+
+static void tas675x_regmap_lock(void *lock_arg)
+{
+ struct tas675x_priv *tas = lock_arg;
+
+ mutex_lock(&tas->io_lock);
+}
+
+static void tas675x_regmap_unlock(void *lock_arg)
+{
+ struct tas675x_priv *tas = lock_arg;
+
+ mutex_unlock(&tas->io_lock);
+}
+
+static const struct regmap_config tas675x_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = TAS675X_PAGE_SIZE * TAS675X_PAGE_SIZE - 1,
+ .ranges = tas675x_ranges,
+ .num_ranges = ARRAY_SIZE(tas675x_ranges),
+ .cache_type = REGCACHE_MAPLE,
+ .reg_defaults = tas675x_reg_defaults,
+ .num_reg_defaults = ARRAY_SIZE(tas675x_reg_defaults),
+ .readable_reg = tas675x_is_readable_register,
+ .volatile_reg = tas675x_is_volatile_register,
+};
+
+static int tas675x_i2c_probe(struct i2c_client *client)
+{
+ struct regmap_config cfg = tas675x_regmap_config;
+ struct tas675x_priv *tas;
+ u32 val;
+ int i, ret;
+
+ tas = devm_kzalloc(&client->dev, sizeof(*tas), GFP_KERNEL);
+ if (!tas)
+ return -ENOMEM;
+
+ tas->dev = &client->dev;
+ i2c_set_clientdata(client, tas);
+
+ mutex_init(&tas->io_lock);
+ cfg.lock = tas675x_regmap_lock;
+ cfg.unlock = tas675x_regmap_unlock;
+ cfg.lock_arg = tas;
+
+ memcpy(tas->dsp_params, tas675x_dsp_defaults, sizeof(tas->dsp_params));
+ INIT_DELAYED_WORK(&tas->fault_check_work, tas675x_fault_check_work);
+
+ tas->regmap = devm_regmap_init_i2c(client, &cfg);
+ if (IS_ERR(tas->regmap))
+ return PTR_ERR(tas->regmap);
+
+ /* Keep regmap cache-only until hardware is powered on */
+ regcache_cache_only(tas->regmap, true);
+
+ tas->dev_type = (enum tas675x_type)(unsigned long)device_get_match_data(tas->dev);
+ tas->fast_boot = device_property_read_bool(tas->dev, "ti,fast-boot");
+
+ tas->audio_slot = -1;
+ tas->llp_slot = -1;
+ tas->vpredict_slot = -1;
+ tas->isense_slot = -1;
+ if (!device_property_read_u32(tas->dev, "ti,audio-slot-no", &val))
+ tas->audio_slot = val;
+ if (!device_property_read_u32(tas->dev, "ti,llp-slot-no", &val))
+ tas->llp_slot = val;
+ if (!device_property_read_u32(tas->dev, "ti,vpredict-slot-no", &val))
+ tas->vpredict_slot = val;
+ if (!device_property_read_u32(tas->dev, "ti,isense-slot-no", &val))
+ tas->isense_slot = val;
+
+ tas->gpio1_func = tas675x_gpio_func_parse(tas->dev, "ti,gpio1-function");
+ tas->gpio2_func = tas675x_gpio_func_parse(tas->dev, "ti,gpio2-function");
+
+ for (i = 0; i < ARRAY_SIZE(tas675x_supply_names); i++)
+ tas->supplies[i].supply = tas675x_supply_names[i];
+
+ ret = devm_regulator_bulk_get(tas->dev, ARRAY_SIZE(tas->supplies), tas->supplies);
+ if (ret)
+ return dev_err_probe(tas->dev, ret, "Failed to request supplies\n");
+
+ tas->vbat = devm_regulator_get_optional(tas->dev, "vbat");
+ if (IS_ERR(tas->vbat) && PTR_ERR(tas->vbat) != -ENODEV)
+ return dev_err_probe(tas->dev, PTR_ERR(tas->vbat),
+ "Failed to get vbat supply\n");
+
+ tas->pd_gpio = devm_gpiod_get_optional(tas->dev, "powerdown", GPIOD_OUT_HIGH);
+ if (IS_ERR(tas->pd_gpio))
+ return dev_err_probe(tas->dev, PTR_ERR(tas->pd_gpio), "Failed powerdown-gpios\n");
+
+ tas->stby_gpio = devm_gpiod_get_optional(tas->dev, "standby", GPIOD_OUT_HIGH);
+ if (IS_ERR(tas->stby_gpio))
+ return dev_err_probe(tas->dev, PTR_ERR(tas->stby_gpio), "Failed standby-gpios\n");
+
+ if (!tas->pd_gpio && !tas->stby_gpio)
+ return dev_err_probe(tas->dev, -EINVAL,
+ "At least one of powerdown-gpios or standby-gpios is required\n");
+
+ ret = tas675x_power_on(tas);
+ if (ret)
+ return ret;
+
+ if (client->irq) {
+ ret = devm_request_threaded_irq(tas->dev, client->irq, NULL,
+ tas675x_irq_handler,
+ IRQF_ONESHOT | IRQF_TRIGGER_FALLING,
+ "tas675x-fault", tas);
+ if (ret) {
+ tas675x_power_off(tas);
+ return dev_err_probe(tas->dev, ret, "Failed to request IRQ\n");
+ }
+ } else {
+ /* Schedule delayed work for fault checking at probe and runtime resume */
+ schedule_delayed_work(&tas->fault_check_work,
+ msecs_to_jiffies(TAS675X_FAULT_CHECK_INTERVAL_MS));
+ }
+
+ /* Enable runtime PM with 2s autosuspend */
+ pm_runtime_set_autosuspend_delay(tas->dev, 2000);
+ pm_runtime_use_autosuspend(tas->dev);
+ pm_runtime_set_active(tas->dev);
+ pm_runtime_mark_last_busy(tas->dev);
+ pm_runtime_enable(tas->dev);
+
+ ret = devm_snd_soc_register_component(tas->dev, &soc_codec_dev_tas675x,
+ tas675x_dais, ARRAY_SIZE(tas675x_dais));
+ if (ret)
+ goto err_pm_disable;
+
+ return 0;
+
+err_pm_disable:
+ pm_runtime_force_suspend(tas->dev);
+ pm_runtime_disable(tas->dev);
+ tas675x_power_off(tas);
+ return ret;
+}
+
+static void tas675x_i2c_remove(struct i2c_client *client)
+{
+ struct tas675x_priv *tas = dev_get_drvdata(&client->dev);
+
+ disable_delayed_work_sync(&tas->fault_check_work);
+ if (client->irq)
+ disable_irq(client->irq);
+
+ pm_runtime_force_suspend(&client->dev);
+ pm_runtime_disable(&client->dev);
+ tas675x_power_off(tas);
+}
+
+static const struct dev_pm_ops tas675x_pm_ops = {
+ SYSTEM_SLEEP_PM_OPS(tas675x_system_suspend, tas675x_system_resume)
+ RUNTIME_PM_OPS(tas675x_runtime_suspend, tas675x_runtime_resume, NULL)
+};
+
+static const struct of_device_id tas675x_of_match[] = {
+ { .compatible = "ti,tas67524", .data = (void *)TAS67524 },
+ { }
+};
+MODULE_DEVICE_TABLE(of, tas675x_of_match);
+
+static const struct i2c_device_id tas675x_i2c_id[] = {
+ { "tas67524", TAS67524 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, tas675x_i2c_id);
+
+static struct i2c_driver tas675x_i2c_driver = {
+ .driver = {
+ .name = "tas675x",
+ .of_match_table = tas675x_of_match,
+ .pm = pm_ptr(&tas675x_pm_ops),
+ },
+ .probe = tas675x_i2c_probe,
+ .remove = tas675x_i2c_remove,
+ .id_table = tas675x_i2c_id,
+};
+
+module_i2c_driver(tas675x_i2c_driver);
+
+MODULE_AUTHOR("Sen Wang <sen@ti.com>");
+MODULE_DESCRIPTION("ASoC TAS675x Audio Amplifier Driver");
+MODULE_LICENSE("GPL");
projects / thirdparty / linux.git / commitdiff
