--- /dev/null
+// SPDX-License-Identifier: GPL-2.0-only
+//
+// aw88395.c -- ALSA SoC AW88395 codec support
+//
+// Copyright (c) 2022-2023 AWINIC Technology CO., LTD
+//
+// Author: Bruce zhao <zhaolei@awinic.com>
+// Author: Weidong Wang <wangweidong.a@awinic.com>
+//
+
+#include <linux/i2c.h>
+#include <linux/firmware.h>
+#include <linux/of_gpio.h>
+#include <linux/regmap.h>
+#include <sound/soc.h>
+#include "aw88395.h"
+#include "aw88395_device.h"
+#include "aw88395_lib.h"
+#include "aw88395_reg.h"
+
+static const struct regmap_config aw88395_remap_config = {
+ .val_bits = 16,
+ .reg_bits = 8,
+ .max_register = AW88395_REG_MAX - 1,
+ .reg_format_endian = REGMAP_ENDIAN_LITTLE,
+ .val_format_endian = REGMAP_ENDIAN_BIG,
+};
+
+static void aw88395_start_pa(struct aw88395 *aw88395)
+{
+ int ret, i;
+
+ for (i = 0; i < AW88395_START_RETRIES; i++) {
+ ret = aw88395_dev_start(aw88395->aw_pa);
+ if (ret) {
+ dev_err(aw88395->aw_pa->dev, "aw88395 device start failed. retry = %d", i);
+ ret = aw88395_dev_fw_update(aw88395->aw_pa, AW88395_DSP_FW_UPDATE_ON, true);
+ if (ret < 0) {
+ dev_err(aw88395->aw_pa->dev, "fw update failed");
+ continue;
+ }
+ } else {
+ dev_info(aw88395->aw_pa->dev, "start success\n");
+ break;
+ }
+ }
+}
+
+static void aw88395_startup_work(struct work_struct *work)
+{
+ struct aw88395 *aw88395 =
+ container_of(work, struct aw88395, start_work.work);
+
+ mutex_lock(&aw88395->lock);
+ aw88395_start_pa(aw88395);
+ mutex_unlock(&aw88395->lock);
+}
+
+static void aw88395_start(struct aw88395 *aw88395, bool sync_start)
+{
+ int ret;
+
+ if (aw88395->aw_pa->fw_status != AW88395_DEV_FW_OK)
+ return;
+
+ if (aw88395->aw_pa->status == AW88395_DEV_PW_ON)
+ return;
+
+ ret = aw88395_dev_fw_update(aw88395->aw_pa, AW88395_DSP_FW_UPDATE_OFF, true);
+ if (ret < 0) {
+ dev_err(aw88395->aw_pa->dev, "fw update failed.");
+ return;
+ }
+
+ if (sync_start == AW88395_SYNC_START)
+ aw88395_start_pa(aw88395);
+ else
+ queue_delayed_work(system_wq,
+ &aw88395->start_work,
+ AW88395_START_WORK_DELAY_MS);
+}
+
+static struct snd_soc_dai_driver aw88395_dai[] = {
+ {
+ .name = "aw88395-aif",
+ .id = 1,
+ .playback = {
+ .stream_name = "Speaker_Playback",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = AW88395_RATES,
+ .formats = AW88395_FORMATS,
+ },
+ .capture = {
+ .stream_name = "Speaker_Capture",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = AW88395_RATES,
+ .formats = AW88395_FORMATS,
+ },
+ },
+};
+
+static int aw88395_get_fade_in_time(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
+ struct aw88395 *aw88395 = snd_soc_component_get_drvdata(component);
+ struct aw_device *aw_dev = aw88395->aw_pa;
+
+ ucontrol->value.integer.value[0] = aw_dev->fade_in_time;
+
+ return 0;
+}
+
+static int aw88395_set_fade_in_time(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
+ struct aw88395 *aw88395 = snd_soc_component_get_drvdata(component);
+ struct soc_mixer_control *mc =
+ (struct soc_mixer_control *)kcontrol->private_value;
+ struct aw_device *aw_dev = aw88395->aw_pa;
+ int time;
+
+ time = ucontrol->value.integer.value[0];
+
+ if (time < mc->min || time > mc->max)
+ return -EINVAL;
+
+ if (time != aw_dev->fade_in_time) {
+ aw_dev->fade_in_time = time;
+ return 1;
+ }
+
+ return 0;
+}
+
+static int aw88395_get_fade_out_time(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
+ struct aw88395 *aw88395 = snd_soc_component_get_drvdata(component);
+ struct aw_device *aw_dev = aw88395->aw_pa;
+
+ ucontrol->value.integer.value[0] = aw_dev->fade_out_time;
+
+ return 0;
+}
+
+static int aw88395_set_fade_out_time(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
+ struct aw88395 *aw88395 = snd_soc_component_get_drvdata(component);
+ struct soc_mixer_control *mc =
+ (struct soc_mixer_control *)kcontrol->private_value;
+ struct aw_device *aw_dev = aw88395->aw_pa;
+ int time;
+
+ time = ucontrol->value.integer.value[0];
+ if (time < mc->min || time > mc->max)
+ return -EINVAL;
+
+ if (time != aw_dev->fade_out_time) {
+ aw_dev->fade_out_time = time;
+ return 1;
+ }
+
+ return 0;
+}
+
+static int aw88395_profile_info(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ struct snd_soc_component *codec = snd_soc_kcontrol_component(kcontrol);
+ struct aw88395 *aw88395 = snd_soc_component_get_drvdata(codec);
+ const char *prof_name;
+ char *name;
+ int count;
+
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
+ uinfo->count = 1;
+
+ count = aw88395_dev_get_profile_count(aw88395->aw_pa);
+ if (count <= 0) {
+ uinfo->value.enumerated.items = 0;
+ return 0;
+ }
+
+ uinfo->value.enumerated.items = count;
+
+ if (uinfo->value.enumerated.item >= count)
+ uinfo->value.enumerated.item = count - 1;
+
+ name = uinfo->value.enumerated.name;
+ count = uinfo->value.enumerated.item;
+
+ prof_name = aw88395_dev_get_prof_name(aw88395->aw_pa, count);
+ if (!prof_name) {
+ strscpy(uinfo->value.enumerated.name, "null",
+ strlen("null") + 1);
+ return 0;
+ }
+
+ strscpy(name, prof_name, sizeof(uinfo->value.enumerated.name));
+
+ return 0;
+}
+
+static int aw88395_profile_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *codec = snd_soc_kcontrol_component(kcontrol);
+ struct aw88395 *aw88395 = snd_soc_component_get_drvdata(codec);
+
+ ucontrol->value.integer.value[0] = aw88395_dev_get_profile_index(aw88395->aw_pa);
+
+ return 0;
+}
+
+static int aw88395_profile_set(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *codec = snd_soc_kcontrol_component(kcontrol);
+ struct aw88395 *aw88395 = snd_soc_component_get_drvdata(codec);
+ int ret;
+
+ /* pa stop or stopping just set profile */
+ mutex_lock(&aw88395->lock);
+ ret = aw88395_dev_set_profile_index(aw88395->aw_pa, ucontrol->value.integer.value[0]);
+ if (ret < 0) {
+ dev_dbg(codec->dev, "profile index does not change");
+ mutex_unlock(&aw88395->lock);
+ return 0;
+ }
+
+ if (aw88395->aw_pa->status) {
+ aw88395_dev_stop(aw88395->aw_pa);
+ aw88395_start(aw88395, AW88395_SYNC_START);
+ }
+
+ mutex_unlock(&aw88395->lock);
+
+ return 1;
+}
+
+static int aw88395_volume_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *codec = snd_soc_kcontrol_component(kcontrol);
+ struct aw88395 *aw88395 = snd_soc_component_get_drvdata(codec);
+ struct aw_volume_desc *vol_desc = &aw88395->aw_pa->volume_desc;
+
+ ucontrol->value.integer.value[0] = vol_desc->ctl_volume;
+
+ return 0;
+}
+
+static int aw88395_volume_set(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *codec = snd_soc_kcontrol_component(kcontrol);
+ struct aw88395 *aw88395 = snd_soc_component_get_drvdata(codec);
+ struct aw_volume_desc *vol_desc = &aw88395->aw_pa->volume_desc;
+ struct soc_mixer_control *mc =
+ (struct soc_mixer_control *)kcontrol->private_value;
+ int value;
+
+ value = ucontrol->value.integer.value[0];
+ if (value < mc->min || value > mc->max)
+ return -EINVAL;
+
+ if (vol_desc->ctl_volume != value) {
+ vol_desc->ctl_volume = value;
+ aw88395_dev_set_volume(aw88395->aw_pa, vol_desc->ctl_volume);
+
+ return 1;
+ }
+
+ return 0;
+}
+
+static int aw88395_get_fade_step(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *codec = snd_soc_kcontrol_component(kcontrol);
+ struct aw88395 *aw88395 = snd_soc_component_get_drvdata(codec);
+
+ ucontrol->value.integer.value[0] = aw88395->aw_pa->fade_step;
+
+ return 0;
+}
+
+static int aw88395_set_fade_step(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *codec = snd_soc_kcontrol_component(kcontrol);
+ struct aw88395 *aw88395 = snd_soc_component_get_drvdata(codec);
+ struct soc_mixer_control *mc =
+ (struct soc_mixer_control *)kcontrol->private_value;
+ int value;
+
+ value = ucontrol->value.integer.value[0];
+ if (value < mc->min || value > mc->max)
+ return -EINVAL;
+
+ if (aw88395->aw_pa->fade_step != value) {
+ aw88395->aw_pa->fade_step = value;
+ return 1;
+ }
+
+ return 0;
+}
+
+static int aw88395_re_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *codec = snd_soc_kcontrol_component(kcontrol);
+ struct aw88395 *aw88395 = snd_soc_component_get_drvdata(codec);
+ struct aw_device *aw_dev = aw88395->aw_pa;
+
+ ucontrol->value.integer.value[0] = aw_dev->cali_desc.cali_re;
+
+ return 0;
+}
+
+static int aw88395_re_set(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *codec = snd_soc_kcontrol_component(kcontrol);
+ struct aw88395 *aw88395 = snd_soc_component_get_drvdata(codec);
+ struct soc_mixer_control *mc =
+ (struct soc_mixer_control *)kcontrol->private_value;
+ struct aw_device *aw_dev = aw88395->aw_pa;
+ int value;
+
+ value = ucontrol->value.integer.value[0];
+ if (value < mc->min || value > mc->max)
+ return -EINVAL;
+
+ if (aw_dev->cali_desc.cali_re != value) {
+ aw_dev->cali_desc.cali_re = value;
+ return 1;
+ }
+
+ return 0;
+}
+
+static const struct snd_kcontrol_new aw88395_controls[] = {
+ SOC_SINGLE_EXT("PCM Playback Volume", AW88395_SYSCTRL2_REG,
+ 6, AW88395_MUTE_VOL, 0, aw88395_volume_get,
+ aw88395_volume_set),
+ SOC_SINGLE_EXT("Fade Step", 0, 0, AW88395_MUTE_VOL, 0,
+ aw88395_get_fade_step, aw88395_set_fade_step),
+ SOC_SINGLE_EXT("Volume Ramp Up Step", 0, 0, FADE_TIME_MAX, FADE_TIME_MIN,
+ aw88395_get_fade_in_time, aw88395_set_fade_in_time),
+ SOC_SINGLE_EXT("Volume Ramp Down Step", 0, 0, FADE_TIME_MAX, FADE_TIME_MIN,
+ aw88395_get_fade_out_time, aw88395_set_fade_out_time),
+ SOC_SINGLE_EXT("Calib", 0, 0, 100, 0,
+ aw88395_re_get, aw88395_re_set),
+ AW88395_PROFILE_EXT("Profile Set", aw88395_profile_info,
+ aw88395_profile_get, aw88395_profile_set),
+};
+
+static int aw88395_plack_event(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *k, int event)
+{
+ struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
+ struct aw88395 *aw88395 = snd_soc_component_get_drvdata(component);
+
+ mutex_lock(&aw88395->lock);
+ switch (event) {
+ case SND_SOC_DAPM_PRE_PMU:
+ aw88395_start(aw88395, AW88395_ASYNC_START);
+ break;
+ case SND_SOC_DAPM_POST_PMD:
+ aw88395_dev_stop(aw88395->aw_pa);
+ break;
+ default:
+ break;
+ }
+ mutex_unlock(&aw88395->lock);
+
+ return 0;
+}
+
+static const struct snd_soc_dapm_widget aw88395_dapm_widgets[] = {
+ /* playback */
+ SND_SOC_DAPM_AIF_IN_E("AIF_RX", "Speaker_Playback", 0, 0, 0, 0,
+ aw88395_plack_event,
+ SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
+ SND_SOC_DAPM_OUTPUT("DAC Output"),
+
+ /* capture */
+ SND_SOC_DAPM_AIF_OUT("AIF_TX", "Speaker_Capture", 0, SND_SOC_NOPM, 0, 0),
+ SND_SOC_DAPM_INPUT("ADC Input"),
+};
+
+static const struct snd_soc_dapm_route aw88395_audio_map[] = {
+ {"DAC Output", NULL, "AIF_RX"},
+ {"AIF_TX", NULL, "ADC Input"},
+};
+
+static int aw88395_codec_probe(struct snd_soc_component *component)
+{
+ struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
+ struct aw88395 *aw88395 = snd_soc_component_get_drvdata(component);
+ int ret;
+
+ INIT_DELAYED_WORK(&aw88395->start_work, aw88395_startup_work);
+
+ /* add widgets */
+ ret = snd_soc_dapm_new_controls(dapm, aw88395_dapm_widgets,
+ ARRAY_SIZE(aw88395_dapm_widgets));
+ if (ret < 0)
+ return ret;
+
+ /* add route */
+ ret = snd_soc_dapm_add_routes(dapm, aw88395_audio_map,
+ ARRAY_SIZE(aw88395_audio_map));
+ if (ret < 0)
+ return ret;
+
+ ret = snd_soc_add_component_controls(component, aw88395_controls,
+ ARRAY_SIZE(aw88395_controls));
+
+ return ret;
+}
+
+static void aw88395_codec_remove(struct snd_soc_component *aw_codec)
+{
+ struct aw88395 *aw88395 = snd_soc_component_get_drvdata(aw_codec);
+
+ cancel_delayed_work_sync(&aw88395->start_work);
+}
+
+static const struct snd_soc_component_driver soc_codec_dev_aw88395 = {
+ .probe = aw88395_codec_probe,
+ .remove = aw88395_codec_remove,
+};
+
+static struct aw88395 *aw88395_malloc_init(struct i2c_client *i2c)
+{
+ struct aw88395 *aw88395 = devm_kzalloc(&i2c->dev,
+ sizeof(struct aw88395), GFP_KERNEL);
+ if (!aw88395)
+ return NULL;
+
+ mutex_init(&aw88395->lock);
+
+ return aw88395;
+}
+
+static void aw88395_hw_reset(struct aw88395 *aw88395)
+{
+ if (aw88395->reset_gpio) {
+ gpiod_set_value_cansleep(aw88395->reset_gpio, 0);
+ usleep_range(AW88395_1000_US, AW88395_1000_US + 10);
+ gpiod_set_value_cansleep(aw88395->reset_gpio, 1);
+ usleep_range(AW88395_1000_US, AW88395_1000_US + 10);
+ } else {
+ dev_err(aw88395->aw_pa->dev, "%s failed", __func__);
+ }
+}
+
+static int aw88395_request_firmware_file(struct aw88395 *aw88395)
+{
+ const struct firmware *cont = NULL;
+ int ret;
+
+ aw88395->aw_pa->fw_status = AW88395_DEV_FW_FAILED;
+
+ ret = request_firmware(&cont, AW88395_ACF_FILE, aw88395->aw_pa->dev);
+ if ((ret < 0) || (!cont)) {
+ dev_err(aw88395->aw_pa->dev, "load [%s] failed!", AW88395_ACF_FILE);
+ return ret;
+ }
+
+ dev_info(aw88395->aw_pa->dev, "loaded %s - size: %zu\n",
+ AW88395_ACF_FILE, cont ? cont->size : 0);
+
+ aw88395->aw_cfg = devm_kzalloc(aw88395->aw_pa->dev, cont->size + sizeof(int), GFP_KERNEL);
+ if (!aw88395->aw_cfg) {
+ release_firmware(cont);
+ return -ENOMEM;
+ }
+ aw88395->aw_cfg->len = (int)cont->size;
+ memcpy(aw88395->aw_cfg->data, cont->data, cont->size);
+ release_firmware(cont);
+
+ ret = aw88395_dev_load_acf_check(aw88395->aw_pa, aw88395->aw_cfg);
+ if (ret < 0) {
+ dev_err(aw88395->aw_pa->dev, "Load [%s] failed ....!", AW88395_ACF_FILE);
+ return ret;
+ }
+
+ dev_dbg(aw88395->aw_pa->dev, "%s : bin load success\n", __func__);
+
+ mutex_lock(&aw88395->lock);
+ /* aw device init */
+ ret = aw88395_dev_init(aw88395->aw_pa, aw88395->aw_cfg);
+ if (ret < 0)
+ dev_err(aw88395->aw_pa->dev, "dev init failed");
+ mutex_unlock(&aw88395->lock);
+
+ return ret;
+}
+
+static int aw88395_i2c_probe(struct i2c_client *i2c)
+{
+ struct aw88395 *aw88395;
+ int ret;
+
+ if (!i2c_check_functionality(i2c->adapter, I2C_FUNC_I2C)) {
+ dev_err(&i2c->dev, "check_functionality failed");
+ return -EIO;
+ }
+
+ aw88395 = aw88395_malloc_init(i2c);
+ if (!aw88395) {
+ dev_err(&i2c->dev, "malloc aw88395 failed");
+ return -ENOMEM;
+ }
+ i2c_set_clientdata(i2c, aw88395);
+
+ aw88395->reset_gpio = devm_gpiod_get_optional(&i2c->dev, "reset", GPIOD_OUT_LOW);
+ if (IS_ERR(aw88395->reset_gpio))
+ dev_info(&i2c->dev, "reset gpio not defined\n");
+
+ /* hardware reset */
+ aw88395_hw_reset(aw88395);
+
+ aw88395->regmap = devm_regmap_init_i2c(i2c, &aw88395_remap_config);
+ if (IS_ERR(aw88395->regmap)) {
+ ret = PTR_ERR(aw88395->regmap);
+ dev_err(&i2c->dev, "Failed to init regmap: %d\n", ret);
+ return ret;
+ }
+
+ /* aw pa init */
+ ret = aw88395_init(&aw88395->aw_pa, i2c, aw88395->regmap);
+ if (ret < 0)
+ return ret;
+
+ ret = aw88395_request_firmware_file(aw88395);
+ if (ret < 0) {
+ dev_err(&i2c->dev, "%s failed\n", __func__);
+ return ret;
+ }
+
+ ret = devm_snd_soc_register_component(&i2c->dev,
+ &soc_codec_dev_aw88395,
+ aw88395_dai, ARRAY_SIZE(aw88395_dai));
+ if (ret < 0) {
+ dev_err(&i2c->dev, "failed to register aw88395: %d", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static const struct i2c_device_id aw88395_i2c_id[] = {
+ { AW88395_I2C_NAME, 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, aw88395_i2c_id);
+
+static struct i2c_driver aw88395_i2c_driver = {
+ .driver = {
+ .name = AW88395_I2C_NAME,
+ .owner = THIS_MODULE,
+ },
+ .probe_new = aw88395_i2c_probe,
+ .id_table = aw88395_i2c_id,
+};
+module_i2c_driver(aw88395_i2c_driver);
+
+MODULE_DESCRIPTION("ASoC AW88395 Smart PA Driver");
+MODULE_LICENSE("GPL v2");
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