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Message-Id: <20250721103805.531758-5-nick.li@foursemi.com>
Date: Mon, 21 Jul 2025 18:38:05 +0800
From: Nick <nick.li@...rsemi.com>
To: lgirdwood@...il.com,
broonie@...nel.org,
robh@...nel.org,
krzk+dt@...nel.org,
conor+dt@...nel.org,
perex@...ex.cz,
tiwai@...e.com,
nick.li@...rsemi.com
Cc: xiaoming.yang@...rsemi.com,
danyang.zheng@...rsemi.com,
like.xy@...mail.com,
linux-sound@...r.kernel.org,
devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH v4 4/4] ASoC: codecs: Add FourSemi FS2104/5S audio amplifier driver
From: Nick Li <nick.li@...rsemi.com>
The FS2104/5S are FourSemi digital audio amplifiers
with I2C control. They are Inductor-Less, Stereo, Closed-Loop,
Digital Input Class-D Power Amplifiers with Enhanced Signal Processing.
Signed-off-by: Nick Li <nick.li@...rsemi.com>
---
sound/soc/codecs/Kconfig | 13 +
sound/soc/codecs/Makefile | 2 +
sound/soc/codecs/fs210x.c | 1583 +++++++++++++++++++++++++++++++++++++
sound/soc/codecs/fs210x.h | 75 ++
4 files changed, 1673 insertions(+)
create mode 100644 sound/soc/codecs/fs210x.c
create mode 100644 sound/soc/codecs/fs210x.h
diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index 6265cc897..8c85f3dbb 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -125,6 +125,7 @@ config SND_SOC_ALL_CODECS
imply SND_SOC_ES7134
imply SND_SOC_ES7241
imply SND_SOC_FRAMER
+ imply SND_SOC_FS210X
imply SND_SOC_GTM601
imply SND_SOC_HDAC_HDMI
imply SND_SOC_HDAC_HDA
@@ -1242,6 +1243,18 @@ config SND_SOC_FS_AMP_LIB
select CRC16
tristate
+config SND_SOC_FS210X
+ tristate 'FourSemi FS2104/5S digital audio amplifier'
+ depends on I2C
+ select GPIOLIB
+ select REGMAP_I2C
+ select SND_SOC_FS_AMP_LIB
+ help
+ Enable support for FourSemi FS2104/5S digital audio amplifier.
+ The FS2104/5S are Inductor-Less, Stereo, Closed-Loop,
+ Digital Input Class-D Power Amplifiers with Enhanced Signal Processing.
+ The amplifiers support I2C and I2S/TDM.
+
config SND_SOC_GTM601
tristate 'GTM601 UMTS modem audio codec'
diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile
index 9afce9aa6..967e939a4 100644
--- a/sound/soc/codecs/Makefile
+++ b/sound/soc/codecs/Makefile
@@ -138,6 +138,7 @@ snd-soc-es8375-y := es8375.o
snd-soc-es8389-y := es8389.o
snd-soc-framer-y := framer-codec.o
snd-soc-fs-amp-lib-y := fs-amp-lib.o
+snd-soc-fs210x-y := fs210x.o
snd-soc-gtm601-y := gtm601.o
snd-soc-hdac-hdmi-y := hdac_hdmi.o
snd-soc-hdac-hda-y := hdac_hda.o
@@ -563,6 +564,7 @@ obj-$(CONFIG_SND_SOC_ES8375) += snd-soc-es8375.o
obj-$(CONFIG_SND_SOC_ES8389) += snd-soc-es8389.o
obj-$(CONFIG_SND_SOC_FRAMER) += snd-soc-framer.o
obj-$(CONFIG_SND_SOC_FS_AMP_LIB)+= snd-soc-fs-amp-lib.o
+obj-$(CONFIG_SND_SOC_FS210X) += snd-soc-fs210x.o
obj-$(CONFIG_SND_SOC_GTM601) += snd-soc-gtm601.o
obj-$(CONFIG_SND_SOC_HDAC_HDMI) += snd-soc-hdac-hdmi.o
obj-$(CONFIG_SND_SOC_HDAC_HDA) += snd-soc-hdac-hda.o
diff --git a/sound/soc/codecs/fs210x.c b/sound/soc/codecs/fs210x.c
new file mode 100644
index 000000000..457590bea
--- /dev/null
+++ b/sound/soc/codecs/fs210x.c
@@ -0,0 +1,1583 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// fs210x.c -- Driver for the FS2104/5S Audio Amplifier
+//
+// Copyright (C) 2016-2025 Shanghai FourSemi Semiconductor Co.,Ltd.
+
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/i2c.h>
+#include <linux/gpio/consumer.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/of.h>
+#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
+#include <linux/workqueue.h>
+#include <sound/soc.h>
+#include <sound/tlv.h>
+
+#include "fs210x.h"
+#include "fs-amp-lib.h"
+
+#define FS210X_DEFAULT_FWM_NAME "fs210x_fwm.bin"
+#define FS210X_DEFAULT_DAI_NAME "fs210x-aif"
+#define FS2105S_DEVICE_ID 0x20 /* FS2105S */
+#define FS210X_DEVICE_ID 0x45 /* FS2104 */
+#define FS210X_REG_MAX 0xF8
+#define FS210X_INIT_SCENE 0
+#define FS210X_DEFAULT_SCENE 1
+#define FS210X_START_DELAY_MS 5
+#define FS210X_FAULT_CHECK_INTERVAL_MS 2000
+#define FS2105S_RATES (SNDRV_PCM_RATE_32000 | \
+ SNDRV_PCM_RATE_44100 | \
+ SNDRV_PCM_RATE_48000 | \
+ SNDRV_PCM_RATE_88200 | \
+ SNDRV_PCM_RATE_96000)
+#define FS210X_RATES (SNDRV_PCM_RATE_16000 | FS2105S_RATES)
+#define FS210X_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \
+ SNDRV_PCM_FMTBIT_S24_LE | \
+ SNDRV_PCM_FMTBIT_S24_3LE | \
+ SNDRV_PCM_FMTBIT_S32_LE)
+#define FS210X_NUM_SUPPLIES ARRAY_SIZE(fs210x_supply_names)
+
+static const char *const fs210x_supply_names[] = {
+ "pvdd",
+ "dvdd",
+};
+
+struct fs210x_platform_data {
+ const char *fwm_name;
+};
+
+struct fs210x_priv {
+ struct i2c_client *i2c;
+ struct device *dev;
+ struct regmap *regmap;
+ struct fs210x_platform_data pdata;
+ struct regulator_bulk_data supplies[FS210X_NUM_SUPPLIES];
+ struct gpio_desc *gpio_sdz;
+ struct delayed_work start_work;
+ struct delayed_work fault_check_work;
+ struct fs_amp_lib amp_lib;
+ const struct fs_amp_scene *cur_scene;
+ struct clk *clk_bclk;
+ /*
+ * @lock: Mutex ensuring exclusive access for critical device operations
+ *
+ * This lock serializes access between the following actions:
+ * - Device initialization procedures(probe)
+ * - Enable/disable device(DAPM event)
+ * - Suspend/resume device(PM)
+ * - Runtime scene switching(control)
+ * - Scheduling/execution of delayed works items(delayed works)
+ */
+ struct mutex lock;
+ unsigned int check_interval_ms;
+ unsigned int bclk;
+ unsigned int srate;
+ int scene_id;
+ u16 devid;
+ bool is_inited;
+ bool is_suspended;
+ bool is_bclk_on;
+ bool is_playing;
+};
+
+static const unsigned int fs2105s_rates[] = {
+ 32000, 44100, 48000, 88200, 96000
+};
+
+static const struct snd_pcm_hw_constraint_list fs2105s_constraints = {
+ .count = ARRAY_SIZE(fs2105s_rates),
+ .list = fs2105s_rates,
+};
+
+static const unsigned int fs210x_rates[] = {
+ 16000, 32000, 44100, 48000, 88200, 96000
+};
+
+static const struct snd_pcm_hw_constraint_list fs210x_constraints = {
+ .count = ARRAY_SIZE(fs210x_rates),
+ .list = fs210x_rates,
+};
+
+static const struct fs_pll_div fs210x_pll_div[] = {
+ /* bclk, pll1, pll2, pll3 */
+ { 512000, 0x006C, 0x0120, 0x0001 },
+ { 768000, 0x016C, 0x00C0, 0x0001 },
+ { 1024000, 0x016C, 0x0090, 0x0001 },
+ { 1536000, 0x016C, 0x0060, 0x0001 },
+ { 2048000, 0x016C, 0x0090, 0x0002 },
+ { 2304000, 0x016C, 0x0080, 0x0002 },
+ { 3072000, 0x016C, 0x0090, 0x0003 },
+ { 4096000, 0x016C, 0x0090, 0x0004 },
+ { 4608000, 0x016C, 0x0080, 0x0004 },
+ { 6144000, 0x016C, 0x0090, 0x0006 },
+ { 8192000, 0x016C, 0x0090, 0x0008 },
+ { 9216000, 0x016C, 0x0090, 0x0009 },
+ { 12288000, 0x016C, 0x0090, 0x000C },
+ { 16384000, 0x016C, 0x0090, 0x0010 },
+ { 18432000, 0x016C, 0x0090, 0x0012 },
+ { 24576000, 0x016C, 0x0090, 0x0018 },
+ { 1411200, 0x016C, 0x0060, 0x0001 },
+ { 2116800, 0x016C, 0x0080, 0x0002 },
+ { 2822400, 0x016C, 0x0090, 0x0003 },
+ { 4233600, 0x016C, 0x0080, 0x0004 },
+ { 5644800, 0x016C, 0x0090, 0x0006 },
+ { 8467200, 0x016C, 0x0090, 0x0009 },
+ { 11289600, 0x016C, 0x0090, 0x000C },
+ { 16934400, 0x016C, 0x0090, 0x0012 },
+ { 22579200, 0x016C, 0x0090, 0x0018 },
+ { 2000000, 0x017C, 0x0093, 0x0002 },
+};
+
+static int fs210x_bclk_set(struct fs210x_priv *fs210x, bool on)
+{
+ int ret = 0;
+
+ if (!fs210x || !fs210x->dev)
+ return -EINVAL;
+
+ if ((fs210x->is_bclk_on ^ on) == 0)
+ return 0;
+
+ if (on) {
+ clk_set_rate(fs210x->clk_bclk, fs210x->bclk);
+ ret = clk_prepare_enable(fs210x->clk_bclk);
+ fs210x->is_bclk_on = true;
+ fsleep(2000); /* >= 2ms */
+ } else {
+ clk_disable_unprepare(fs210x->clk_bclk);
+ fs210x->is_bclk_on = false;
+ }
+
+ return ret;
+}
+
+static int fs210x_reg_write(struct fs210x_priv *fs210x,
+ u8 reg, u16 val)
+{
+ int ret;
+
+ ret = regmap_write(fs210x->regmap, reg, val);
+ if (ret) {
+ dev_err(fs210x->dev, "Failed to write %02Xh: %d\n", reg, ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int fs210x_reg_read(struct fs210x_priv *fs210x,
+ u8 reg, u16 *pval)
+{
+ unsigned int val;
+ int ret;
+
+ ret = regmap_read(fs210x->regmap, reg, &val);
+ if (ret) {
+ dev_err(fs210x->dev, "Failed to read %02Xh: %d\n", reg, ret);
+ return ret;
+ }
+
+ *pval = (u16)val;
+
+ return 0;
+}
+
+static int fs210x_reg_update_bits(struct fs210x_priv *fs210x,
+ u8 reg, u16 mask, u16 val)
+{
+ int ret;
+
+ ret = regmap_update_bits(fs210x->regmap, reg, mask, val);
+ if (ret) {
+ dev_err(fs210x->dev, "Failed to update %02Xh: %d\n", reg, ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int fs210x_reg_bulk_write(struct fs210x_priv *fs210x,
+ u8 reg, const void *val, u32 size)
+{
+ int ret;
+
+ ret = regmap_bulk_write(fs210x->regmap, reg, val, size / 2);
+ if (ret) {
+ dev_err(fs210x->dev, "Failed to bulk write %02Xh: %d\n",
+ reg, ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static inline int fs210x_write_reg_val(struct fs210x_priv *fs210x,
+ const struct fs_reg_val *regv)
+{
+ return fs210x_reg_write(fs210x, regv->reg, regv->val);
+}
+
+static inline int fs210x_write_reg_bits(struct fs210x_priv *fs210x,
+ const struct fs_reg_bits *regu)
+{
+ return fs210x_reg_update_bits(fs210x,
+ regu->reg,
+ regu->mask,
+ regu->val);
+}
+
+static inline int fs210x_set_cmd_pkg(struct fs210x_priv *fs210x,
+ const struct fs_cmd_pkg *pkg,
+ unsigned int *offset)
+{
+ int delay_us;
+
+ if (pkg->cmd >= 0x00 && pkg->cmd <= FS210X_REG_MAX) {
+ *offset = sizeof(pkg->regv);
+ return fs210x_write_reg_val(fs210x, &pkg->regv);
+ } else if (pkg->cmd == FS_CMD_UPDATE) {
+ *offset = sizeof(pkg->regb);
+ return fs210x_write_reg_bits(fs210x, &pkg->regb);
+ } else if (pkg->cmd == FS_CMD_DELAY) {
+ if (pkg->regv.val > FS_CMD_DELAY_MS_MAX)
+ return -EOPNOTSUPP;
+ delay_us = pkg->regv.val * 1000; /* ms -> us */
+ fsleep(delay_us);
+ *offset = sizeof(pkg->regv);
+ return 0;
+ }
+
+ dev_err(fs210x->dev, "Invalid pkg cmd: %d\n", pkg->cmd);
+
+ return -EOPNOTSUPP;
+}
+
+static int fs210x_reg_write_table(struct fs210x_priv *fs210x,
+ const struct fs_reg_table *reg)
+{
+ const struct fs_cmd_pkg *pkg;
+ unsigned int index, offset;
+ int ret;
+
+ if (!fs210x || !fs210x->dev)
+ return -EINVAL;
+
+ if (!reg || reg->size == 0)
+ return -EFAULT;
+
+ for (index = 0; index < reg->size; index += offset) {
+ pkg = (struct fs_cmd_pkg *)(reg->buf + index);
+ ret = fs210x_set_cmd_pkg(fs210x, pkg, &offset);
+ if (ret) {
+ dev_err(fs210x->dev, "Failed to set cmd pkg: %02X-%d\n",
+ pkg->cmd, ret);
+ return ret;
+ }
+ }
+
+ if (index != reg->size) {
+ dev_err(fs210x->dev, "Invalid reg table size: %d-%d\n",
+ index, reg->size);
+ return -EFAULT;
+ }
+
+ return 0;
+}
+
+static int fs210x_dev_play(struct fs210x_priv *fs210x)
+{
+ int ret;
+
+ if (!fs210x->is_inited)
+ return -EFAULT;
+
+ if (fs210x->is_playing)
+ return 0;
+
+ ret = fs210x_reg_write(fs210x, FS210X_11H_SYSCTRL,
+ FS210X_11H_DPS_PLAY);
+ if (!ret)
+ fs210x->is_playing = true;
+
+ fsleep(10000); /* >= 10ms */
+
+ return ret;
+}
+
+static int fs210x_dev_stop(struct fs210x_priv *fs210x)
+{
+ int ret;
+
+ if (!fs210x->is_inited)
+ return -EFAULT;
+
+ if (!fs210x->is_playing)
+ return 0;
+
+ ret = fs210x_reg_write(fs210x, FS210X_11H_SYSCTRL,
+ FS210X_11H_DPS_PWDN);
+ fs210x->is_playing = false;
+
+ fsleep(30000); /* >= 30ms */
+
+ return ret;
+}
+
+static int fs210x_set_reg_table(struct fs210x_priv *fs210x,
+ const struct fs_amp_scene *scene)
+{
+ const struct fs_amp_scene *cur_scene;
+ const struct fs_reg_table *reg;
+
+ if (!fs210x || !fs210x->dev || !scene)
+ return -EINVAL;
+
+ cur_scene = fs210x->cur_scene;
+ if (!scene->reg || cur_scene == scene) {
+ dev_dbg(fs210x->dev, "Skip writing reg table\n");
+ return 0;
+ }
+
+ reg = scene->reg;
+ dev_dbg(fs210x->dev, "reg table size: %d\n", reg->size);
+
+ return fs210x_reg_write_table(fs210x, reg);
+}
+
+static int fs210x_set_woofer_table(struct fs210x_priv *fs210x)
+{
+ const struct fs_file_table *woofer;
+ const struct fs_fwm_table *table;
+ int ret;
+
+ if (!fs210x || !fs210x->dev)
+ return -EINVAL;
+
+ /* NOTE: fs2105s has woofer ram only */
+ if (fs210x->devid != FS2105S_DEVICE_ID)
+ return 0;
+
+ table = fs210x->amp_lib.table[FS_INDEX_WOOFER];
+ if (!table) {
+ dev_dbg(fs210x->dev, "Skip writing woofer table\n");
+ return 0;
+ }
+
+ woofer = (struct fs_file_table *)table->buf;
+ dev_dbg(fs210x->dev, "woofer table size: %d\n", woofer->size);
+ /* Unit of woofer data is u32(4 bytes) */
+ if (woofer->size == 0 || (woofer->size & 0x3)) {
+ dev_err(fs210x->dev, "Invalid woofer size: %d\n",
+ woofer->size);
+ return -EINVAL;
+ }
+
+ ret = fs210x_reg_write(fs210x, FS210X_46H_DACEQA,
+ FS2105S_46H_CAM_BURST_W);
+ ret |= fs210x_reg_bulk_write(fs210x, FS210X_42H_DACEQWL,
+ woofer->buf, woofer->size);
+
+ return ret;
+}
+
+static int fs210x_set_effect_table(struct fs210x_priv *fs210x,
+ const struct fs_amp_scene *scene)
+{
+ const struct fs_amp_scene *cur_scene;
+ const struct fs_file_table *effect;
+ int half_size;
+ int ret;
+
+ if (!fs210x || !fs210x->dev || !scene)
+ return -EINVAL;
+
+ cur_scene = fs210x->cur_scene;
+ if (!scene->effect || cur_scene == scene) {
+ dev_dbg(fs210x->dev, "Skip writing effect table\n");
+ return 0;
+ }
+
+ effect = scene->effect;
+ dev_dbg(fs210x->dev, "effect table size: %d\n", effect->size);
+
+ /* Unit of effect data is u32(4 bytes), 2 channels */
+ if (effect->size == 0 || (effect->size & 0x7)) {
+ dev_err(fs210x->dev, "Invalid effect size: %d\n",
+ effect->size);
+ return -EINVAL;
+ }
+
+ half_size = effect->size / 2;
+
+ /* Left channel */
+ ret = fs210x_reg_write(fs210x, FS210X_46H_DACEQA,
+ FS210X_46H_CAM_BURST_L);
+ ret |= fs210x_reg_bulk_write(fs210x, FS210X_42H_DACEQWL,
+ effect->buf, half_size);
+ if (ret)
+ return ret;
+
+ /* Right channel */
+ ret = fs210x_reg_write(fs210x, FS210X_46H_DACEQA,
+ FS210X_46H_CAM_BURST_R);
+ ret |= fs210x_reg_bulk_write(fs210x, FS210X_42H_DACEQWL,
+ effect->buf + half_size, half_size);
+
+ return ret;
+}
+
+static int fs210x_access_dsp_ram(struct fs210x_priv *fs210x, bool enable)
+{
+ int ret;
+
+ if (!fs210x || !fs210x->dev)
+ return -EINVAL;
+
+ if (enable) {
+ ret = fs210x_reg_write(fs210x, FS210X_11H_SYSCTRL,
+ FS210X_11H_DPS_HIZ);
+ ret |= fs210x_reg_write(fs210x, FS210X_0BH_ACCKEY,
+ FS210X_0BH_ACCKEY_ON);
+ } else {
+ ret = fs210x_reg_write(fs210x, FS210X_0BH_ACCKEY,
+ FS210X_0BH_ACCKEY_OFF);
+ ret |= fs210x_reg_write(fs210x, FS210X_11H_SYSCTRL,
+ FS210X_11H_DPS_PWDN);
+ }
+
+ fsleep(10000); /* >= 10ms */
+
+ return ret;
+}
+
+static int fs210x_write_dsp_effect(struct fs210x_priv *fs210x,
+ const struct fs_amp_scene *scene,
+ int scene_id)
+{
+ int ret;
+
+ if (!fs210x || !scene)
+ return -EINVAL;
+
+ ret = fs210x_access_dsp_ram(fs210x, true);
+ if (ret) {
+ dev_err(fs210x->dev, "Failed to access dsp: %d\n", ret);
+ goto tag_exit;
+ }
+
+ ret = fs210x_set_effect_table(fs210x, scene);
+ if (ret) {
+ dev_err(fs210x->dev, "Failed to set effect: %d\n", ret);
+ goto tag_exit;
+ }
+
+ if (scene_id == FS210X_INIT_SCENE)
+ ret = fs210x_set_woofer_table(fs210x);
+
+tag_exit:
+ fs210x_reg_write(fs210x, FS210X_46H_DACEQA,
+ FS210X_46H_CAM_CLEAR);
+ fs210x_access_dsp_ram(fs210x, false);
+
+ return ret;
+}
+
+static int fs210x_check_scene(struct fs210x_priv *fs210x,
+ int scene_id, bool *skip_set)
+{
+ struct fs_amp_lib *amp_lib;
+
+ if (!fs210x || !skip_set)
+ return -EINVAL;
+
+ amp_lib = &fs210x->amp_lib;
+ if (amp_lib->scene_count == 0 || !amp_lib->scene) {
+ dev_err(fs210x->dev, "There's no scene data\n");
+ return -EINVAL;
+ }
+
+ if (scene_id < 0 || scene_id >= amp_lib->scene_count) {
+ dev_err(fs210x->dev, "Invalid scene_id: %d\n", scene_id);
+ return -EINVAL;
+ }
+
+ if (fs210x->scene_id == scene_id) {
+ dev_dbg(fs210x->dev, "Skip to set same scene\n");
+ return 0;
+ }
+
+ *skip_set = false;
+
+ return 0;
+}
+
+static int fs210x_set_scene(struct fs210x_priv *fs210x, int scene_id)
+{
+ const struct fs_amp_scene *scene;
+ bool skip_set = true;
+ bool is_playing;
+ int ret;
+
+ if (!fs210x || !fs210x->dev)
+ return -EINVAL;
+
+ ret = fs210x_check_scene(fs210x, scene_id, &skip_set);
+ if (ret || skip_set)
+ return ret;
+
+ scene = fs210x->amp_lib.scene + scene_id;
+ dev_info(fs210x->dev, "Switch scene.%d: %s\n",
+ scene_id, scene->name);
+
+ is_playing = fs210x->is_playing;
+ if (is_playing)
+ fs210x_dev_stop(fs210x);
+
+ ret = fs210x_set_reg_table(fs210x, scene);
+ if (ret) {
+ dev_err(fs210x->dev, "Failed to set reg: %d\n", ret);
+ return ret;
+ }
+
+ ret = fs210x_write_dsp_effect(fs210x, scene, scene_id);
+ if (ret) {
+ dev_err(fs210x->dev, "Failed to write ram: %d\n", ret);
+ return ret;
+ }
+
+ fs210x->cur_scene = scene;
+ fs210x->scene_id = scene_id;
+
+ if (is_playing)
+ fs210x_dev_play(fs210x);
+
+ return 0;
+}
+
+static int fs210x_init_chip(struct fs210x_priv *fs210x)
+{
+ int scene_id;
+ int ret;
+
+ regcache_cache_bypass(fs210x->regmap, true);
+
+ if (!fs210x->gpio_sdz) {
+ /* Gpio is not found, i2c reset */
+ ret = fs210x_reg_write(fs210x, FS210X_10H_PWRCTRL,
+ FS210X_10H_I2C_RESET);
+ if (ret)
+ goto tag_power_down;
+ } else {
+ /* gpio reset, deactivate */
+ gpiod_set_value_cansleep(fs210x->gpio_sdz, 0);
+ }
+
+ fsleep(10000); /* >= 10ms */
+
+ /* Backup scene id */
+ scene_id = fs210x->scene_id;
+ fs210x->scene_id = -1;
+
+ /* Init registers/RAM by init scene */
+ ret = fs210x_set_scene(fs210x, FS210X_INIT_SCENE);
+ if (ret)
+ goto tag_power_down;
+
+ /*
+ * If the firmware has effect scene(s),
+ * we load effect scene by default scene or scene_id
+ */
+ if (fs210x->amp_lib.scene_count > 1) {
+ if (scene_id < FS210X_DEFAULT_SCENE)
+ scene_id = FS210X_DEFAULT_SCENE;
+ ret = fs210x_set_scene(fs210x, scene_id);
+ if (ret)
+ goto tag_power_down;
+ }
+
+tag_power_down:
+ /* Power down the device */
+ ret |= fs210x_reg_write(fs210x, FS210X_11H_SYSCTRL,
+ FS210X_11H_DPS_PWDN);
+ fsleep(10000); /* >= 10ms */
+
+ regcache_cache_bypass(fs210x->regmap, false);
+ if (!ret) {
+ regcache_mark_dirty(fs210x->regmap);
+ regcache_sync(fs210x->regmap);
+ fs210x->is_inited = true;
+ }
+
+ return ret;
+}
+
+static int fs210x_set_i2s_params(struct fs210x_priv *fs210x)
+{
+ const struct fs_i2s_srate params[] = {
+ { 16000, 0x3 },
+ { 32000, 0x7 },
+ { 44100, 0x8 },
+ { 48000, 0x9 },
+ { 88200, 0xA },
+ { 96000, 0xB },
+ };
+ u16 val;
+ int i, ret;
+
+ for (i = 0; i < ARRAY_SIZE(params); i++) {
+ if (params[i].srate != fs210x->srate)
+ continue;
+ val = params[i].i2ssr << FS210X_17H_I2SSR_SHIFT;
+ ret = fs210x_reg_update_bits(fs210x,
+ FS210X_17H_I2SCTRL,
+ FS210X_17H_I2SSR_MASK,
+ val);
+ return ret;
+ }
+
+ dev_err(fs210x->dev, "Invalid sample rate: %d\n", fs210x->srate);
+
+ return -EINVAL;
+}
+
+static int fs210x_get_pll_div(struct fs210x_priv *fs210x,
+ const struct fs_pll_div **pll_div)
+{
+ int i;
+
+ if (!fs210x || !pll_div)
+ return -EINVAL;
+
+ for (i = 0; i < ARRAY_SIZE(fs210x_pll_div); i++) {
+ if (fs210x_pll_div[i].bclk != fs210x->bclk)
+ continue;
+ *pll_div = fs210x_pll_div + i;
+ return 0;
+ }
+
+ dev_err(fs210x->dev, "No PLL table for bclk: %d\n", fs210x->bclk);
+
+ return -EFAULT;
+}
+
+static int fs210x_set_hw_params(struct fs210x_priv *fs210x)
+{
+ const struct fs_pll_div *pll_div;
+ int ret;
+
+ ret = fs210x_set_i2s_params(fs210x);
+ if (ret) {
+ dev_err(fs210x->dev, "Failed to set i2s params: %d\n", ret);
+ return ret;
+ }
+
+ /* Set pll params */
+ ret = fs210x_get_pll_div(fs210x, &pll_div);
+ if (ret)
+ return ret;
+
+ ret = fs210x_reg_write(fs210x, FS210X_A1H_PLLCTRL1, pll_div->pll1);
+ ret |= fs210x_reg_write(fs210x, FS210X_A2H_PLLCTRL2, pll_div->pll2);
+ ret |= fs210x_reg_write(fs210x, FS210X_A3H_PLLCTRL3, pll_div->pll3);
+
+ return ret;
+}
+
+static int fs210x_dai_startup(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ const struct snd_pcm_hw_constraint_list *list;
+ struct fs210x_priv *fs210x;
+ int ret;
+
+ fs210x = snd_soc_component_get_drvdata(dai->component);
+ if (!fs210x) {
+ pr_err("dai_startup: fs210x is null\n");
+ return -EINVAL;
+ }
+
+ if (!substream->runtime)
+ return 0;
+
+ ret = snd_pcm_hw_constraint_mask64(substream->runtime,
+ SNDRV_PCM_HW_PARAM_FORMAT,
+ FS210X_FORMATS);
+ if (ret < 0) {
+ dev_err(fs210x->dev,
+ "Failed to set hw param format: %d\n", ret);
+ return ret;
+ }
+
+ if (fs210x->devid == FS2105S_DEVICE_ID)
+ list = &fs2105s_constraints;
+ else
+ list = &fs210x_constraints;
+
+ ret = snd_pcm_hw_constraint_list(substream->runtime, 0,
+ SNDRV_PCM_HW_PARAM_RATE,
+ list);
+ if (ret < 0) {
+ dev_err(fs210x->dev,
+ "Failed to set hw param rate: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int fs210x_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
+{
+ struct fs210x_priv *fs210x;
+
+ fs210x = snd_soc_component_get_drvdata(dai->component);
+
+ switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
+ case SND_SOC_DAIFMT_CBC_CFC:
+ /* Only supports consumer mode */
+ break;
+ default:
+ dev_err(fs210x->dev, "Only supports consumer mode\n");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int fs210x_dai_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ struct fs210x_priv *fs210x;
+ int chn_num;
+ int ret;
+
+ if (substream->stream != SNDRV_PCM_STREAM_PLAYBACK)
+ return 0;
+
+ fs210x = snd_soc_component_get_drvdata(dai->component);
+
+ fs210x->srate = params_rate(params);
+ fs210x->bclk = snd_soc_params_to_bclk(params);
+ chn_num = params_channels(params);
+ if (chn_num == 1) /* mono */
+ fs210x->bclk *= 2; /* I2S bus has 2 channels */
+
+ /* The FS2105S can't support 16kHz sample rate. */
+ if (fs210x->devid == FS2105S_DEVICE_ID && fs210x->srate == 16000)
+ return -EOPNOTSUPP;
+
+ mutex_lock(&fs210x->lock);
+ ret = fs210x_set_hw_params(fs210x);
+ mutex_unlock(&fs210x->lock);
+ if (ret)
+ dev_err(fs210x->dev, "Failed to set hw params: %d\n", ret);
+
+ return ret;
+}
+
+static int fs210x_dai_mute(struct snd_soc_dai *dai, int mute, int stream)
+{
+ struct fs210x_priv *fs210x;
+ unsigned long delay;
+
+ if (stream != SNDRV_PCM_STREAM_PLAYBACK)
+ return 0;
+
+ fs210x = snd_soc_component_get_drvdata(dai->component);
+
+ mutex_lock(&fs210x->lock);
+
+ if (!fs210x->is_inited || fs210x->is_suspended) {
+ mutex_unlock(&fs210x->lock);
+ return 0;
+ }
+
+ mutex_unlock(&fs210x->lock);
+
+ if (mute) {
+ cancel_delayed_work_sync(&fs210x->fault_check_work);
+ cancel_delayed_work_sync(&fs210x->start_work);
+ } else {
+ delay = msecs_to_jiffies(fs210x->check_interval_ms);
+ schedule_delayed_work(&fs210x->fault_check_work, delay);
+ }
+
+ return 0;
+}
+
+static int fs210x_dai_trigger(struct snd_pcm_substream *substream,
+ int cmd, struct snd_soc_dai *dai)
+{
+ struct fs210x_priv *fs210x;
+
+ fs210x = snd_soc_component_get_drvdata(dai->component);
+
+ mutex_lock(&fs210x->lock);
+
+ if (!fs210x->is_inited || fs210x->is_suspended || fs210x->is_playing) {
+ mutex_unlock(&fs210x->lock);
+ return 0;
+ }
+
+ mutex_unlock(&fs210x->lock);
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ case SNDRV_PCM_TRIGGER_RESUME:
+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ /*
+ * According to the power up/down sequence of FS210x,
+ * it requests the I2S clock has been present
+ * and stable(>= 2ms) before playing.
+ */
+ schedule_delayed_work(&fs210x->start_work,
+ msecs_to_jiffies(FS210X_START_DELAY_MS));
+ break;
+
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+static void fs210x_start_work(struct work_struct *work)
+{
+ struct fs210x_priv *fs210x;
+ int ret;
+
+ fs210x = container_of(work, struct fs210x_priv, start_work.work);
+
+ mutex_lock(&fs210x->lock);
+
+ ret = fs210x_dev_play(fs210x);
+ if (ret)
+ dev_err(fs210x->dev, "Failed to start playing: %d\n", ret);
+
+ mutex_unlock(&fs210x->lock);
+}
+
+static void fs210x_fault_check_work(struct work_struct *work)
+{
+ struct fs210x_priv *fs210x;
+ u16 status;
+ int ret;
+
+ fs210x = container_of(work, struct fs210x_priv, fault_check_work.work);
+
+ mutex_lock(&fs210x->lock);
+
+ if (!fs210x->is_inited || fs210x->is_suspended || !fs210x->is_playing) {
+ mutex_unlock(&fs210x->lock);
+ return;
+ }
+
+ ret = fs210x_reg_read(fs210x, FS210X_05H_ANASTAT, &status);
+ mutex_unlock(&fs210x->lock);
+ if (ret)
+ return;
+
+ if (!(status & FS210X_05H_PVDD_MASK))
+ dev_err(fs210x->dev, "PVDD fault\n");
+ if (status & FS210X_05H_OCDL_MASK)
+ dev_err(fs210x->dev, "OC detected\n");
+ if (status & FS210X_05H_UVDL_MASK)
+ dev_err(fs210x->dev, "UV detected\n");
+ if (status & FS210X_05H_OVDL_MASK)
+ dev_err(fs210x->dev, "OV detected\n");
+ if (status & FS210X_05H_OTPDL_MASK)
+ dev_err(fs210x->dev, "OT detected\n");
+ if (status & FS210X_05H_OCRDL_MASK)
+ dev_err(fs210x->dev, "OCR detected\n");
+ if (status & FS210X_05H_OCLDL_MASK)
+ dev_err(fs210x->dev, "OCL detected\n");
+ if (status & FS210X_05H_DCRDL_MASK)
+ dev_err(fs210x->dev, "DCR detected\n");
+ if (status & FS210X_05H_DCLDL_MASK)
+ dev_err(fs210x->dev, "DCL detected\n");
+ if (status & FS210X_05H_SRDL_MASK)
+ dev_err(fs210x->dev, "SR detected\n");
+ if (status & FS210X_05H_OTWDL_MASK)
+ dev_err(fs210x->dev, "OTW detected\n");
+ if (!(status & FS210X_05H_AMPS_MASK))
+ dev_dbg(fs210x->dev, "Amplifier unready\n");
+ if (!(status & FS210X_05H_PLLS_MASK))
+ dev_err(fs210x->dev, "PLL unlock\n");
+ if (!(status & FS210X_05H_ANAS_MASK))
+ dev_err(fs210x->dev, "Analog power fault\n");
+
+ schedule_delayed_work(&fs210x->fault_check_work,
+ msecs_to_jiffies(fs210x->check_interval_ms));
+}
+
+static int fs210x_get_drvdata_from_kctrl(struct snd_kcontrol *kctrl,
+ struct fs210x_priv **fs210x)
+{
+ struct snd_soc_component *cmpnt;
+
+ if (!kctrl) {
+ pr_err("fs210x: kcontrol is null\n");
+ return -EINVAL;
+ }
+
+ cmpnt = snd_soc_kcontrol_component(kctrl);
+ if (!cmpnt) {
+ pr_err("fs210x: component is null\n");
+ return -EINVAL;
+ }
+
+ *fs210x = snd_soc_component_get_drvdata(cmpnt);
+
+ return 0;
+}
+
+static int fs210x_effect_scene_info(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ const struct fs_amp_scene *scene;
+ struct fs210x_priv *fs210x;
+ const char *name = "N/A";
+ int idx, count;
+ int ret;
+
+ ret = fs210x_get_drvdata_from_kctrl(kcontrol, &fs210x);
+ if (ret || !fs210x->dev) {
+ pr_err("scene_effect_info: fs210x is null\n");
+ return -EINVAL;
+ }
+
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
+ uinfo->count = 1;
+
+ count = fs210x->amp_lib.scene_count - 1; /* Skip init scene */
+ if (count < 1) {
+ uinfo->value.enumerated.items = 0;
+ return 0;
+ }
+
+ uinfo->value.enumerated.items = count;
+ if (uinfo->value.enumerated.item >= count)
+ uinfo->value.enumerated.item = count - 1;
+
+ idx = uinfo->value.enumerated.item;
+ scene = fs210x->amp_lib.scene + idx + 1;
+ if (scene->name)
+ name = scene->name;
+
+ strscpy(uinfo->value.enumerated.name, name, strlen(name) + 1);
+
+ return 0;
+}
+
+static int fs210x_effect_scene_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct fs210x_priv *fs210x;
+ int index;
+ int ret;
+
+ ret = fs210x_get_drvdata_from_kctrl(kcontrol, &fs210x);
+ if (ret || !fs210x->dev) {
+ pr_err("scene_effect_get: fs210x is null\n");
+ return -EINVAL;
+ }
+
+ /* The id of effect scene is from 1 to N. */
+ if (fs210x->scene_id < 1)
+ return -EINVAL;
+
+ mutex_lock(&fs210x->lock);
+ /*
+ * FS210x has scene(s) as below:
+ * init scene: id = 0
+ * effect scene(s): id = 1~N (optional)
+ * effect_index = scene_id - 1
+ */
+ index = fs210x->scene_id - 1;
+ ucontrol->value.integer.value[0] = index;
+ mutex_unlock(&fs210x->lock);
+
+ return 0;
+}
+
+static int fs210x_effect_scene_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct fs210x_priv *fs210x;
+ int scene_id, scene_count;
+ bool is_changed = false;
+ int ret;
+
+ ret = fs210x_get_drvdata_from_kctrl(kcontrol, &fs210x);
+ if (ret || !fs210x->dev) {
+ pr_err("scene_effect_put: fs210x is null\n");
+ return -EINVAL;
+ }
+
+ mutex_lock(&fs210x->lock);
+
+ /*
+ * FS210x has scene(s) as below:
+ * init scene: id = 0 (It's set in fs210x_init_chip() only)
+ * effect scene(s): id = 1~N (optional)
+ * scene_id = effect_index + 1.
+ */
+ scene_id = ucontrol->value.integer.value[0] + 1;
+ scene_count = fs210x->amp_lib.scene_count - 1; /* Skip init scene */
+ if (scene_id < 1 || scene_id > scene_count) {
+ mutex_unlock(&fs210x->lock);
+ return -ERANGE;
+ }
+
+ if (scene_id != fs210x->scene_id)
+ is_changed = true;
+
+ if (fs210x->is_suspended) {
+ fs210x->scene_id = scene_id;
+ mutex_unlock(&fs210x->lock);
+ return is_changed;
+ }
+
+ ret = fs210x_set_scene(fs210x, scene_id);
+ if (ret)
+ dev_err(fs210x->dev, "Failed to set scene: %d\n", ret);
+
+ mutex_unlock(&fs210x->lock);
+
+ if (!ret && is_changed)
+ return 1;
+
+ return ret;
+}
+
+static int fs210x_playback_event(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *kc, int event)
+{
+ struct snd_soc_component *cmpnt = snd_soc_dapm_to_component(w->dapm);
+ struct fs210x_priv *fs210x = snd_soc_component_get_drvdata(cmpnt);
+ int ret = 0;
+
+ mutex_lock(&fs210x->lock);
+
+ if (fs210x->is_suspended) {
+ mutex_unlock(&fs210x->lock);
+ return 0;
+ }
+
+ switch (event) {
+ case SND_SOC_DAPM_PRE_PMU:
+ /*
+ * If there is no bclk for us to set the clock output,
+ * we will enable the device(start_work) in dai trigger.
+ */
+ if (!fs210x->clk_bclk)
+ break;
+ fs210x_bclk_set(fs210x, true);
+ ret = fs210x_dev_play(fs210x);
+ break;
+ case SND_SOC_DAPM_POST_PMD:
+ ret = fs210x_dev_stop(fs210x);
+ fs210x_bclk_set(fs210x, false);
+ break;
+ default:
+ break;
+ }
+
+ mutex_unlock(&fs210x->lock);
+
+ return ret;
+}
+
+static const struct snd_soc_dai_ops fs210x_dai_ops = {
+ .startup = fs210x_dai_startup,
+ .set_fmt = fs210x_dai_set_fmt,
+ .hw_params = fs210x_dai_hw_params,
+ .mute_stream = fs210x_dai_mute,
+ .trigger = fs210x_dai_trigger,
+};
+
+static const struct snd_soc_dai_driver fs210x_dai = {
+ .name = FS210X_DEFAULT_DAI_NAME,
+ .playback = {
+ .stream_name = "Playback",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = FS210X_RATES,
+ .formats = FS210X_FORMATS,
+ },
+ .capture = {
+ .stream_name = "Capture",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = FS210X_RATES,
+ .formats = FS210X_FORMATS,
+ },
+ .ops = &fs210x_dai_ops,
+ .symmetric_rate = 1,
+ .symmetric_sample_bits = 1,
+};
+
+static const DECLARE_TLV_DB_SCALE(fs2105s_vol_tlv, -9709, 19, 1);
+static const DECLARE_TLV_DB_SCALE(fs210x_vol_tlv, -13357, 19, 1);
+
+static const struct snd_kcontrol_new fs2105s_vol_control[] = {
+ SOC_DOUBLE_R_TLV("PCM Playback Volume",
+ FS210X_39H_LVOLCTRL, FS210X_3AH_RVOLCTRL,
+ 7, 0x1FF, 0, fs2105s_vol_tlv),
+};
+
+static const struct snd_kcontrol_new fs210x_vol_control[] = {
+ SOC_DOUBLE_R_TLV("PCM Playback Volume",
+ FS210X_39H_LVOLCTRL, FS210X_3AH_RVOLCTRL,
+ 6, 0x2BF, 0, fs210x_vol_tlv),
+};
+
+static const struct snd_kcontrol_new fs210x_controls[] = {
+ SOC_DOUBLE("DAC Mute Switch", FS210X_30H_DACCTRL, 4, 8, 1, 0),
+ SOC_DOUBLE("DAC Fade Switch", FS210X_30H_DACCTRL, 5, 9, 1, 0),
+};
+
+static const struct snd_kcontrol_new fs210x_scene_control[] = {
+ FS_SOC_ENUM_EXT("Effect Scene",
+ fs210x_effect_scene_info,
+ fs210x_effect_scene_get,
+ fs210x_effect_scene_put),
+};
+
+static const struct snd_soc_dapm_widget fs210x_dapm_widgets[] = {
+ SND_SOC_DAPM_AIF_IN_E("AIF IN", "Playback", 0, SND_SOC_NOPM, 0, 0,
+ fs210x_playback_event,
+ SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
+ SND_SOC_DAPM_AIF_OUT("AIF OUT", "Capture", 0, SND_SOC_NOPM, 0, 0),
+ SND_SOC_DAPM_OUTPUT("OUTL"),
+ SND_SOC_DAPM_OUTPUT("OUTR"),
+ SND_SOC_DAPM_INPUT("SDO"),
+};
+
+static const struct snd_soc_dapm_route fs210x_dapm_routes[] = {
+ { "OUTL", NULL, "AIF IN" },
+ { "OUTR", NULL, "AIF IN" },
+ { "AIF OUT", NULL, "SDO" },
+};
+
+static int fs210x_add_mixer_controls(struct fs210x_priv *fs210x,
+ struct snd_soc_component *cmpnt)
+{
+ const struct snd_kcontrol_new *kctrl;
+ int count;
+ int ret;
+
+ if (!fs210x || !cmpnt)
+ return -EINVAL;
+
+ if (fs210x->devid == FS2105S_DEVICE_ID) {
+ kctrl = fs2105s_vol_control;
+ count = ARRAY_SIZE(fs2105s_vol_control);
+ } else {
+ kctrl = fs210x_vol_control;
+ count = ARRAY_SIZE(fs210x_vol_control);
+ }
+
+ ret = snd_soc_add_component_controls(cmpnt, kctrl, count);
+ if (ret)
+ return ret;
+
+ /*
+ * If the firmware has no scene or only init scene,
+ * we skip adding this mixer control.
+ */
+ if (fs210x->amp_lib.scene_count < 2)
+ return 0;
+
+ kctrl = fs210x_scene_control;
+ count = ARRAY_SIZE(fs210x_scene_control);
+
+ return snd_soc_add_component_controls(cmpnt, kctrl, count);
+}
+
+static int fs210x_probe(struct snd_soc_component *cmpnt)
+{
+ struct fs210x_priv *fs210x;
+ int ret;
+
+ fs210x = snd_soc_component_get_drvdata(cmpnt);
+ if (!fs210x || !fs210x->dev)
+ return -EINVAL;
+
+ fs210x->amp_lib.dev = fs210x->dev;
+ fs210x->amp_lib.devid = fs210x->devid;
+
+ ret = fs_amp_load_firmware(&fs210x->amp_lib, fs210x->pdata.fwm_name);
+ if (ret)
+ return ret;
+
+ ret = fs210x_add_mixer_controls(fs210x, cmpnt);
+ if (ret)
+ return ret;
+
+ mutex_lock(&fs210x->lock);
+ ret = fs210x_init_chip(fs210x);
+ mutex_unlock(&fs210x->lock);
+
+ return ret;
+}
+
+static void fs210x_remove(struct snd_soc_component *cmpnt)
+{
+ struct fs210x_priv *fs210x;
+
+ fs210x = snd_soc_component_get_drvdata(cmpnt);
+ if (!fs210x || !fs210x->dev)
+ return;
+
+ cancel_delayed_work_sync(&fs210x->start_work);
+ cancel_delayed_work_sync(&fs210x->fault_check_work);
+}
+
+#ifdef CONFIG_PM
+static int fs210x_suspend(struct snd_soc_component *cmpnt)
+{
+ struct fs210x_priv *fs210x;
+ int ret;
+
+ fs210x = snd_soc_component_get_drvdata(cmpnt);
+ if (!fs210x || !fs210x->dev)
+ return -EINVAL;
+
+ regcache_cache_only(fs210x->regmap, true);
+
+ mutex_lock(&fs210x->lock);
+ fs210x->cur_scene = NULL;
+ fs210x->is_inited = false;
+ fs210x->is_playing = false;
+ fs210x->is_suspended = true;
+
+ gpiod_set_value_cansleep(fs210x->gpio_sdz, 1); /* Active */
+ fsleep(30000); /* >= 30ms */
+ mutex_unlock(&fs210x->lock);
+
+ cancel_delayed_work_sync(&fs210x->start_work);
+ cancel_delayed_work_sync(&fs210x->fault_check_work);
+
+ ret = regulator_bulk_disable(FS210X_NUM_SUPPLIES, fs210x->supplies);
+ if (ret) {
+ dev_err(fs210x->dev, "Failed to suspend: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int fs210x_resume(struct snd_soc_component *cmpnt)
+{
+ struct fs210x_priv *fs210x;
+ int ret;
+
+ fs210x = snd_soc_component_get_drvdata(cmpnt);
+ if (!fs210x || !fs210x->dev)
+ return -EINVAL;
+
+ ret = regulator_bulk_enable(FS210X_NUM_SUPPLIES, fs210x->supplies);
+ if (ret) {
+ dev_err(fs210x->dev, "Failed to enable supplies: %d\n", ret);
+ return ret;
+ }
+
+ mutex_lock(&fs210x->lock);
+
+ fs210x->is_suspended = false;
+ ret = fs210x_init_chip(fs210x);
+
+ mutex_unlock(&fs210x->lock);
+
+ return ret;
+}
+#else
+#define fs210x_suspend NULL
+#define fs210x_resume NULL
+#endif // CONFIG_PM
+
+static bool fs210x_volatile_registers(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case FS210X_00H_STATUS ... FS210X_0FH_I2CADDR:
+ case FS210X_ABH_INTSTAT:
+ case FS210X_ACH_INTSTATR:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static const struct snd_soc_component_driver fs210x_soc_component_dev = {
+ .probe = fs210x_probe,
+ .remove = fs210x_remove,
+ .suspend = fs210x_suspend,
+ .resume = fs210x_resume,
+ .controls = fs210x_controls,
+ .num_controls = ARRAY_SIZE(fs210x_controls),
+ .dapm_widgets = fs210x_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(fs210x_dapm_widgets),
+ .dapm_routes = fs210x_dapm_routes,
+ .num_dapm_routes = ARRAY_SIZE(fs210x_dapm_routes),
+};
+
+static const struct regmap_config fs210x_regmap = {
+ .reg_bits = 8,
+ .val_bits = 16,
+ .max_register = FS210X_REG_MAX,
+ .val_format_endian = REGMAP_ENDIAN_BIG,
+ .cache_type = REGCACHE_MAPLE,
+ .volatile_reg = fs210x_volatile_registers,
+};
+
+static int fs210x_detect_device(struct fs210x_priv *fs210x)
+{
+ u16 devid;
+ int ret;
+
+ ret = fs210x_reg_read(fs210x, FS210X_03H_DEVID, &devid);
+ if (ret)
+ return ret;
+
+ fs210x->devid = HI_U16(devid);
+
+ switch (fs210x->devid) {
+ case FS210X_DEVICE_ID:
+ dev_info(fs210x->dev, "FS2104 detected\n");
+ break;
+ case FS2105S_DEVICE_ID:
+ dev_info(fs210x->dev, "FS2105S detected\n");
+ break;
+ default:
+ dev_err(fs210x->dev, "DEVID: 0x%04X dismatch\n", devid);
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+static int fs210x_parse_dts(struct fs210x_priv *fs210x,
+ struct fs210x_platform_data *pdata)
+{
+ struct device_node *node = fs210x->dev->of_node;
+ int i, ret;
+
+ if (!node)
+ return 0;
+
+ ret = of_property_read_string(node, "firmware-name", &pdata->fwm_name);
+ if (ret)
+ pdata->fwm_name = FS210X_DEFAULT_FWM_NAME;
+
+ fs210x->gpio_sdz = devm_gpiod_get_optional(fs210x->dev,
+ "reset", GPIOD_OUT_HIGH);
+ if (IS_ERR(fs210x->gpio_sdz))
+ return dev_err_probe(fs210x->dev, PTR_ERR(fs210x->gpio_sdz),
+ "Failed to get reset-gpios\n");
+
+ for (i = 0; i < FS210X_NUM_SUPPLIES; i++)
+ fs210x->supplies[i].supply = fs210x_supply_names[i];
+
+ ret = devm_regulator_bulk_get(fs210x->dev,
+ ARRAY_SIZE(fs210x->supplies),
+ fs210x->supplies);
+ if (ret)
+ return dev_err_probe(fs210x->dev, ret,
+ "Failed to get supplies\n");
+
+ return 0;
+}
+
+static void fs210x_deinit(struct fs210x_priv *fs210x)
+{
+ gpiod_set_value_cansleep(fs210x->gpio_sdz, 1); /* Active */
+ fsleep(10000); /* >= 10ms */
+
+ regulator_bulk_disable(FS210X_NUM_SUPPLIES, fs210x->supplies);
+}
+
+static int fs210x_init(struct fs210x_priv *fs210x)
+{
+ int ret;
+
+ ret = fs210x_parse_dts(fs210x, &fs210x->pdata);
+ if (ret)
+ return ret;
+
+ fs210x->clk_bclk = devm_clk_get_optional(fs210x->dev, "bclk");
+ if (IS_ERR(fs210x->clk_bclk))
+ return dev_err_probe(fs210x->dev, PTR_ERR(fs210x->clk_bclk),
+ "Failed to get bclk\n");
+
+ ret = regulator_bulk_enable(FS210X_NUM_SUPPLIES, fs210x->supplies);
+ if (ret)
+ return dev_err_probe(fs210x->dev, ret,
+ "Failed to enable supplies\n");
+
+ /* Make sure the SDZ pin is pulled down enough time. */
+ fsleep(10000); /* >= 10ms */
+ gpiod_set_value_cansleep(fs210x->gpio_sdz, 0); /* Deactivate */
+ fsleep(10000); /* >= 10ms */
+
+ ret = fs210x_detect_device(fs210x);
+ if (ret) {
+ fs210x_deinit(fs210x);
+ return ret;
+ }
+
+ fs210x->scene_id = -1; /* Invalid scene */
+ fs210x->cur_scene = NULL;
+ fs210x->is_playing = false;
+ fs210x->is_inited = false;
+ fs210x->is_suspended = false;
+ fs210x->check_interval_ms = FS210X_FAULT_CHECK_INTERVAL_MS;
+
+ INIT_DELAYED_WORK(&fs210x->fault_check_work, fs210x_fault_check_work);
+ INIT_DELAYED_WORK(&fs210x->start_work, fs210x_start_work);
+ mutex_init(&fs210x->lock);
+
+ return 0;
+}
+
+static int fs210x_register_snd_component(struct fs210x_priv *fs210x)
+{
+ struct snd_soc_dai_driver *dai_drv;
+ static int instance_id;
+ int ret;
+
+ dai_drv = devm_kmemdup(fs210x->dev, &fs210x_dai,
+ sizeof(fs210x_dai), GFP_KERNEL);
+ if (!dai_drv)
+ return -ENOMEM;
+
+ dai_drv->name = devm_kasprintf(fs210x->dev,
+ GFP_KERNEL, "%s-%d",
+ dai_drv->name, instance_id);
+ instance_id++;
+
+ if (fs210x->devid == FS2105S_DEVICE_ID) {
+ dai_drv->playback.rates = FS2105S_RATES;
+ dai_drv->capture.rates = FS2105S_RATES;
+ }
+
+ ret = snd_soc_register_component(fs210x->dev,
+ &fs210x_soc_component_dev,
+ dai_drv, 1);
+ return ret;
+}
+
+static ssize_t check_interval_ms_show(struct device *dev,
+ struct device_attribute *devattr,
+ char *buf)
+{
+ struct fs210x_priv *fs210x = dev_get_drvdata(dev);
+
+ return sysfs_emit(buf, "%d\n", fs210x->check_interval_ms);
+}
+
+static ssize_t check_interval_ms_store(struct device *dev,
+ struct device_attribute *devattr,
+ const char *buf,
+ size_t count)
+{
+ struct fs210x_priv *fs210x = dev_get_drvdata(dev);
+ int ret;
+
+ ret = kstrtouint(buf, 10, &fs210x->check_interval_ms);
+ if (ret)
+ return -EINVAL;
+
+ return (ssize_t)count;
+}
+
+static DEVICE_ATTR_RW(check_interval_ms);
+
+static struct attribute *fs210x_attrs[] = {
+ &dev_attr_check_interval_ms.attr,
+ NULL,
+};
+
+static struct attribute_group fs210x_attr_group = {
+ .attrs = fs210x_attrs,
+};
+
+static int fs210x_i2c_probe(struct i2c_client *client)
+{
+ struct fs210x_priv *fs210x;
+ int ret;
+
+ fs210x = devm_kzalloc(&client->dev, sizeof(*fs210x), GFP_KERNEL);
+ if (!fs210x)
+ return -ENOMEM;
+
+ fs210x->i2c = client;
+ fs210x->dev = &client->dev;
+ i2c_set_clientdata(client, fs210x);
+
+ fs210x->regmap = devm_regmap_init_i2c(client, &fs210x_regmap);
+ if (IS_ERR(fs210x->regmap))
+ return dev_err_probe(fs210x->dev, PTR_ERR(fs210x->regmap),
+ "Failed to get regmap\n");
+
+ ret = fs210x_init(fs210x);
+ if (ret)
+ return ret;
+
+ ret = devm_device_add_group(fs210x->dev, &fs210x_attr_group);
+ if (ret) {
+ fs210x_deinit(fs210x);
+ return dev_err_probe(fs210x->dev, ret,
+ "Failed to create sysfs group\n");
+ }
+
+ ret = fs210x_register_snd_component(fs210x);
+ if (ret) {
+ fs210x_deinit(fs210x);
+ return dev_err_probe(fs210x->dev, ret,
+ "Failed to register component\n");
+ }
+
+ return 0;
+}
+
+static void fs210x_i2c_remove(struct i2c_client *client)
+{
+ struct fs210x_priv *fs210x = i2c_get_clientdata(client);
+
+ snd_soc_unregister_component(fs210x->dev);
+ fs210x_deinit(fs210x);
+}
+
+static const struct i2c_device_id fs210x_i2c_id[] = {
+ { "fs2104" },
+ { "fs2105s" },
+ {}
+};
+MODULE_DEVICE_TABLE(i2c, fs210x_i2c_id);
+
+static const struct of_device_id fs210x_of_match[] = {
+ { .compatible = "foursemi,fs2105s", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, fs210x_of_match);
+
+static struct i2c_driver fs210x_i2c_driver = {
+ .driver = {
+ .name = "fs210x",
+ .of_match_table = of_match_ptr(fs210x_of_match),
+ },
+ .id_table = fs210x_i2c_id,
+ .probe = fs210x_i2c_probe,
+ .remove = fs210x_i2c_remove,
+};
+
+module_i2c_driver(fs210x_i2c_driver);
+
+MODULE_AUTHOR("Nick Li <nick.li@...rsemi.com>");
+MODULE_DESCRIPTION("FS2104/5S Audio Amplifier Driver");
+MODULE_LICENSE("GPL");
diff --git a/sound/soc/codecs/fs210x.h b/sound/soc/codecs/fs210x.h
new file mode 100644
index 000000000..78e176033
--- /dev/null
+++ b/sound/soc/codecs/fs210x.h
@@ -0,0 +1,75 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * fs210x.h -- Driver for the FS2104/5S Audio Amplifier
+ *
+ * Copyright (C) 2016-2025 Shanghai FourSemi Semiconductor Co.,Ltd.
+ */
+
+#ifndef __FS210X_H__
+#define __FS210X_H__
+
+#define FS210X_00H_STATUS 0x00
+#define FS210X_03H_DEVID 0x03
+#define FS210X_05H_ANASTAT 0x05
+#define FS210X_06H_DIGSTAT 0x06
+#define FS210X_0BH_ACCKEY 0x0B
+#define FS210X_0FH_I2CADDR 0x0F
+#define FS210X_10H_PWRCTRL 0x10
+#define FS210X_11H_SYSCTRL 0x11
+#define FS210X_17H_I2SCTRL 0x17
+#define FS210X_30H_DACCTRL 0x30
+#define FS210X_39H_LVOLCTRL 0x39
+#define FS210X_3AH_RVOLCTRL 0x3A
+#define FS210X_42H_DACEQWL 0x42
+#define FS210X_46H_DACEQA 0x46
+#define FS210X_A1H_PLLCTRL1 0xA1
+#define FS210X_A2H_PLLCTRL2 0xA2
+#define FS210X_A3H_PLLCTRL3 0xA3
+#define FS210X_ABH_INTSTAT 0xAB
+#define FS210X_ACH_INTSTATR 0xAC
+
+#define FS210X_05H_PVDD_SHIFT 14
+#define FS210X_05H_PVDD_MASK BIT(14)
+#define FS210X_05H_OCDL_SHIFT 13
+#define FS210X_05H_OCDL_MASK BIT(13)
+#define FS210X_05H_UVDL_SHIFT 12
+#define FS210X_05H_UVDL_MASK BIT(12)
+#define FS210X_05H_OVDL_SHIFT 11
+#define FS210X_05H_OVDL_MASK BIT(11)
+#define FS210X_05H_OTPDL_SHIFT 10
+#define FS210X_05H_OTPDL_MASK BIT(10)
+#define FS210X_05H_OCRDL_SHIFT 9
+#define FS210X_05H_OCRDL_MASK BIT(9)
+#define FS210X_05H_OCLDL_SHIFT 8
+#define FS210X_05H_OCLDL_MASK BIT(8)
+#define FS210X_05H_DCRDL_SHIFT 7
+#define FS210X_05H_DCRDL_MASK BIT(7)
+#define FS210X_05H_DCLDL_SHIFT 6
+#define FS210X_05H_DCLDL_MASK BIT(6)
+#define FS210X_05H_SRDL_SHIFT 5
+#define FS210X_05H_SRDL_MASK BIT(5)
+#define FS210X_05H_OTWDL_SHIFT 4
+#define FS210X_05H_OTWDL_MASK BIT(4)
+#define FS210X_05H_AMPS_SHIFT 3
+#define FS210X_05H_AMPS_MASK BIT(3)
+#define FS210X_05H_PLLS_SHIFT 1
+#define FS210X_05H_PLLS_MASK BIT(1)
+#define FS210X_05H_ANAS_SHIFT 0
+#define FS210X_05H_ANAS_MASK BIT(0)
+#define FS210X_17H_I2SSR_SHIFT 12
+#define FS210X_17H_I2SSR_MASK GENMASK(15, 12)
+#define FS210X_30H_RMUTE_SHIFT 8
+#define FS210X_30H_LMUTE_SHIFT 4
+
+#define FS210X_0BH_ACCKEY_ON 0x0091
+#define FS210X_0BH_ACCKEY_OFF 0x0000
+#define FS210X_10H_I2C_RESET 0x0002
+#define FS210X_11H_DPS_HIZ 0x0100
+#define FS210X_11H_DPS_PWDN 0x0000
+#define FS210X_11H_DPS_PLAY 0x0300
+#define FS210X_46H_CAM_BURST_L 0x8000
+#define FS210X_46H_CAM_BURST_R 0x8200
+#define FS2105S_46H_CAM_BURST_W 0x8400
+#define FS210X_46H_CAM_CLEAR 0x0000
+
+#endif /* __FS210X_H__ */
--
2.39.5
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