From: Chris Morgan Date: Wed, 28 Jan 2026 17:46:07 +0000 (-0600) Subject: ASoC: codecs: aw87390: Add Anbernic RG-DS amp driver X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a145cfd0ffe7bd7d61ce25839cec737c449b0d2c;p=thirdparty%2Fkernel%2Flinux.git ASoC: codecs: aw87390: Add Anbernic RG-DS amp driver Add support for Anbernic's RG-DS audio amplifiers, powered by Awinic AW87391 amplifier ICs. These chips typically require an init sequence provided by firmware, but the manufacturer did not provide firmware in this case. As a result we had to hard-code the init sequence and use a device specific binding (rather than a binding just for the aw87391). Signed-off-by: Chris Morgan Link: https://patch.msgid.link/20260128174608.1498-3-macroalpha82@gmail.com Signed-off-by: Mark Brown --- diff --git a/sound/soc/codecs/aw87390.c b/sound/soc/codecs/aw87390.c index d7fd865c349fb..613daccca3af8 100644 --- a/sound/soc/codecs/aw87390.c +++ b/sound/soc/codecs/aw87390.c @@ -314,6 +314,45 @@ static int aw87390_drv_event(struct snd_soc_dapm_widget *w, return ret; } +static int aw87391_rgds_drv_event(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event) +{ + struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm); + struct aw87390 *aw87390 = snd_soc_component_get_drvdata(component); + struct aw_device *aw_dev = aw87390->aw_pa; + + switch (event) { + case SND_SOC_DAPM_PRE_PMU: + if (!IS_ERR(aw87390->vdd_reg)) { + if (regulator_enable(aw87390->vdd_reg)) + dev_warn(aw_dev->dev, "Failed to enable vdd\n"); + } + break; + case SND_SOC_DAPM_POST_PMU: + regmap_write(aw_dev->regmap, AW87391_SYSCTRL_REG, + AW87391_REG_VER_SEL_LOW | AW87391_REG_EN_ADAP | + AW87391_REG_EN_2X | AW87391_EN_SPK | + AW87391_EN_PA | AW87391_REG_EN_CP | + AW87391_EN_SW); + break; + case SND_SOC_DAPM_PRE_PMD: + regmap_write(aw_dev->regmap, AW87390_SYSCTRL_REG, + AW87390_POWER_DOWN_VALUE); + break; + case SND_SOC_DAPM_POST_PMD: + if (!IS_ERR(aw87390->vdd_reg)) { + if (regulator_disable(aw87390->vdd_reg)) + dev_warn(aw_dev->dev, "Failed to disable vdd\n"); + } + break; + default: + dev_err(aw_dev->dev, "%s: invalid event %d\n", __func__, event); + return -EINVAL; + } + + return 0; +} + static const struct snd_soc_dapm_widget aw87390_dapm_widgets[] = { SND_SOC_DAPM_INPUT("IN"), SND_SOC_DAPM_PGA_E("SPK PA", SND_SOC_NOPM, 0, 0, NULL, 0, aw87390_drv_event, @@ -321,6 +360,14 @@ static const struct snd_soc_dapm_widget aw87390_dapm_widgets[] = { SND_SOC_DAPM_OUTPUT("OUT"), }; +static const struct snd_soc_dapm_widget aw87391_rgds_dapm_widgets[] = { + SND_SOC_DAPM_INPUT("IN"), + SND_SOC_DAPM_PGA_E("SPK PA", SND_SOC_NOPM, 0, 0, NULL, 0, aw87391_rgds_drv_event, + SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU | + SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD), + SND_SOC_DAPM_OUTPUT("OUT"), +}; + static const struct snd_soc_dapm_route aw87390_dapm_routes[] = { { "SPK PA", NULL, "IN" }, { "OUT", NULL, "SPK PA" }, @@ -339,6 +386,80 @@ static int aw87390_codec_probe(struct snd_soc_component *component) return 0; } +/* + * Firmware typically is used to load the sequence of init commands, + * however for the Anbernic RG-DS we don't have a firmware file just + * a list of registers and values. Most of these values are undocumented + * in the AW87391 datasheet. + */ +static void aw87391_rgds_codec_init(struct aw87390 *aw87390) +{ + struct aw_device *aw_dev = aw87390->aw_pa; + + /* Undocumented command per datasheet. */ + regmap_write(aw_dev->regmap, 0x64, 0x3a); + + /* Bits 7:4 are undocumented but provided by manufacturer. */ + regmap_write(aw_dev->regmap, AW87391_CP_REG, + (5 << 4) | AW87391_REG_CP_OVP_8_50V); + + regmap_write(aw_dev->regmap, AW87391_AGCPO_REG, + AW87391_AK1_S_016 | AW87391_AGC2PO_MW(500)); + + regmap_write(aw_dev->regmap, AW87391_AGC2PA_REG, + AW87391_RK_S_20_48 | AW87391_AK2_S_41 | AW87391_AK2F_S_41); + + /* Undocumented commands per datasheet. */ + regmap_write(aw_dev->regmap, 0x5d, 0x00); + regmap_write(aw_dev->regmap, 0x5e, 0xb4); + regmap_write(aw_dev->regmap, 0x5f, 0x30); + regmap_write(aw_dev->regmap, 0x60, 0x39); + regmap_write(aw_dev->regmap, 0x61, 0x10); + regmap_write(aw_dev->regmap, 0x62, 0x03); + regmap_write(aw_dev->regmap, 0x63, 0x7d); + regmap_write(aw_dev->regmap, 0x65, 0xa0); + regmap_write(aw_dev->regmap, 0x66, 0x21); + regmap_write(aw_dev->regmap, 0x67, 0x41); + regmap_write(aw_dev->regmap, 0x68, 0x3b); + regmap_write(aw_dev->regmap, 0x6e, 0x00); + regmap_write(aw_dev->regmap, 0x6f, 0x00); + regmap_write(aw_dev->regmap, 0x70, 0x00); + regmap_write(aw_dev->regmap, 0x71, 0x00); + regmap_write(aw_dev->regmap, 0x72, 0x34); + regmap_write(aw_dev->regmap, 0x73, 0x06); + regmap_write(aw_dev->regmap, 0x74, 0x10); + regmap_write(aw_dev->regmap, 0x75, 0x00); + regmap_write(aw_dev->regmap, 0x7a, 0x00); + regmap_write(aw_dev->regmap, 0x7b, 0x00); + regmap_write(aw_dev->regmap, 0x7c, 0x00); + regmap_write(aw_dev->regmap, 0x7d, 0x00); + + regmap_write(aw_dev->regmap, AW87391_PAG_REG, AW87391_GAIN_12DB); + regmap_write(aw_dev->regmap, AW87391_SYSCTRL_REG, + AW87391_EN_PA | AW87391_REG_EN_CP | AW87391_EN_SW); + regmap_write(aw_dev->regmap, AW87391_SYSCTRL_REG, + AW87391_REG_VER_SEL_LOW | AW87391_REG_EN_ADAP | + AW87391_REG_EN_2X | AW87391_EN_SPK | AW87391_EN_PA | + AW87391_REG_EN_CP | AW87391_EN_SW); + regmap_write(aw_dev->regmap, AW87391_PAG_REG, AW87391_GAIN_15DB); +} + +static int aw87391_rgds_codec_probe(struct snd_soc_component *component) +{ + struct aw87390 *aw87390 = snd_soc_component_get_drvdata(component); + + aw87390->vdd_reg = devm_regulator_get_optional(aw87390->aw_pa->dev, + "vdd"); + if (IS_ERR(aw87390->vdd_reg) && PTR_ERR(aw87390->vdd_reg) != -ENODEV) + return dev_err_probe(aw87390->aw_pa->dev, + PTR_ERR(aw87390->vdd_reg), + "Could not get vdd regulator\n"); + + aw87391_rgds_codec_init(aw87390); + + return 0; +} + static const struct snd_soc_component_driver soc_codec_dev_aw87390 = { .probe = aw87390_codec_probe, .dapm_widgets = aw87390_dapm_widgets, @@ -349,6 +470,14 @@ static const struct snd_soc_component_driver soc_codec_dev_aw87390 = { .num_controls = ARRAY_SIZE(aw87390_controls), }; +static const struct snd_soc_component_driver soc_codec_dev_anbernic_rgds = { + .probe = aw87391_rgds_codec_probe, + .dapm_widgets = aw87391_rgds_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(aw87391_rgds_dapm_widgets), + .dapm_routes = aw87390_dapm_routes, + .num_dapm_routes = ARRAY_SIZE(aw87390_dapm_routes), +}; + static void aw87390_parse_channel_dt(struct aw87390 *aw87390) { struct aw_device *aw_dev = aw87390->aw_pa; @@ -366,6 +495,10 @@ static int aw87390_init(struct aw87390 *aw87390, struct i2c_client *i2c, struct unsigned int chip_id; int ret; + aw_dev = devm_kzalloc(&i2c->dev, sizeof(*aw_dev), GFP_KERNEL); + if (!aw_dev) + return -ENOMEM; + /* read chip id */ ret = regmap_read(regmap, AW87390_ID_REG, &chip_id); if (ret) { @@ -373,22 +506,24 @@ static int aw87390_init(struct aw87390 *aw87390, struct i2c_client *i2c, struct return ret; } - if (chip_id != AW87390_CHIP_ID) { + switch (chip_id) { + case AW87390_CHIP_ID: + aw_dev->chip_id = AW87390_CHIP_ID; + break; + case AW87391_CHIP_ID: + aw_dev->chip_id = AW87391_CHIP_ID; + break; + default: dev_err(&i2c->dev, "unsupported device\n"); return -ENXIO; } dev_dbg(&i2c->dev, "chip id = 0x%x\n", chip_id); - aw_dev = devm_kzalloc(&i2c->dev, sizeof(*aw_dev), GFP_KERNEL); - if (!aw_dev) - return -ENOMEM; - aw87390->aw_pa = aw_dev; aw_dev->i2c = i2c; aw_dev->regmap = regmap; aw_dev->dev = &i2c->dev; - aw_dev->chip_id = AW87390_CHIP_ID; aw_dev->acf = NULL; aw_dev->prof_info.prof_desc = NULL; aw_dev->prof_info.count = 0; @@ -406,6 +541,7 @@ static int aw87390_init(struct aw87390 *aw87390, struct i2c_client *i2c, struct static int aw87390_i2c_probe(struct i2c_client *i2c) { struct aw87390 *aw87390; + const struct snd_soc_component_driver *priv; int ret; ret = i2c_check_functionality(i2c->adapter, I2C_FUNC_I2C); @@ -434,16 +570,38 @@ static int aw87390_i2c_probe(struct i2c_client *i2c) if (ret) return ret; - ret = devm_snd_soc_register_component(&i2c->dev, - &soc_codec_dev_aw87390, NULL, 0); + switch (aw87390->aw_pa->chip_id) { + case AW87390_CHIP_ID: + ret = devm_snd_soc_register_component(&i2c->dev, + &soc_codec_dev_aw87390, NULL, 0); + break; + case AW87391_CHIP_ID: + priv = of_device_get_match_data(&i2c->dev); + if (!priv) + return dev_err_probe(&i2c->dev, -EINVAL, + "aw87391 not currently supported\n"); + ret = devm_snd_soc_register_component(&i2c->dev, priv, NULL, 0); + break; + default: + return -ENXIO; + } + if (ret) dev_err(&i2c->dev, "failed to register aw87390: %d\n", ret); return ret; } +static const struct of_device_id aw87390_of_match[] = { + { .compatible = "awinic,aw87390" }, + { .compatible = "anbernic,rgds-amp", .data = &soc_codec_dev_anbernic_rgds }, + {}, +}; +MODULE_DEVICE_TABLE(of, aw87390_of_match); + static const struct i2c_device_id aw87390_i2c_id[] = { { AW87390_I2C_NAME }, + { AW87391_I2C_NAME }, { } }; MODULE_DEVICE_TABLE(i2c, aw87390_i2c_id); @@ -451,6 +609,7 @@ MODULE_DEVICE_TABLE(i2c, aw87390_i2c_id); static struct i2c_driver aw87390_i2c_driver = { .driver = { .name = AW87390_I2C_NAME, + .of_match_table = of_match_ptr(aw87390_of_match), }, .probe = aw87390_i2c_probe, .id_table = aw87390_i2c_id, diff --git a/sound/soc/codecs/aw87390.h b/sound/soc/codecs/aw87390.h index d0d049e65991f..f48b207e4bb44 100644 --- a/sound/soc/codecs/aw87390.h +++ b/sound/soc/codecs/aw87390.h @@ -52,6 +52,90 @@ #define AW87390_I2C_NAME "aw87390" #define AW87390_ACF_FILE "aw87390_acf.bin" +#define AW87391_SYSCTRL_REG (0x01) +#define AW87391_REG_VER_SEL_LOW (0 << 6) +#define AW87391_REG_VER_SEL_NORMAL (1 << 6) +#define AW87391_REG_VER_SEL_SUPER (2 << 6) +#define AW87391_REG_EN_ADAP BIT(5) +#define AW87391_REG_EN_2X BIT(4) +#define AW87391_EN_SPK BIT(3) +#define AW87391_EN_PA BIT(2) +#define AW87391_REG_EN_CP BIT(1) +#define AW87391_EN_SW BIT(0) + +#define AW87391_CP_REG (0x02) +#define AW87391_REG_CP_OVP_6_50V 0 +#define AW87391_REG_CP_OVP_6_75V 1 +#define AW87391_REG_CP_OVP_7_00V 2 +#define AW87391_REG_CP_OVP_7_25V 3 +#define AW87391_REG_CP_OVP_7_50V 4 +#define AW87391_REG_CP_OVP_7_75V 5 +#define AW87391_REG_CP_OVP_8_00V 6 +#define AW87391_REG_CP_OVP_8_25V 7 +#define AW87391_REG_CP_OVP_8_50V 8 + +#define AW87391_PAG_REG (0x03) +#define AW87391_GAIN_12DB 0 +#define AW87391_GAIN_15DB 1 +#define AW87391_GAIN_18DB 2 +#define AW87391_GAIN_21DB 3 +#define AW87391_GAIN_24DB 4 + +#define AW87391_AGCPO_REG (0x04) +#define AW87391_AK1_S_016 (2 << 5) +#define AW87391_AK1_S_032 (3 << 5) +#define AW87391_PD_AGC1_PWRDN BIT(4) +/* AGC2PO supports values between 500mW (0000) to 1600mW (1011) */ +#define AW87391_AGC2PO_MW(n) ((n / 100) - 5) + +#define AW87391_AGC2PA_REG (0x05) +#define AW87391_RK_S_5_12 (0 << 5) +#define AW87391_RK_S_10_24 (1 << 5) +#define AW87391_RK_S_20_48 (2 << 5) +#define AW87391_RK_S_41 (3 << 5) +#define AW87391_RK_S_82 (4 << 5) +#define AW87391_RK_S_164 (5 << 5) +#define AW87391_RK_S_328 (6 << 5) +#define AW87391_RK_S_656 (7 << 5) +#define AW87391_AK2_S_1_28 (0 << 2) +#define AW87391_AK2_S_2_56 (1 << 2) +#define AW87391_AK2_S_10_24 (2 << 2) +#define AW87391_AK2_S_41 (3 << 2) +#define AW87391_AK2_S_82 (4 << 2) +#define AW87391_AK2_S_164 (5 << 2) +#define AW87391_AK2_S_328 (6 << 2) +#define AW87391_AK2_S_656 (7 << 2) +#define AW87391_AK2F_S_10_24 0 +#define AW87391_AK2F_S_20_48 1 +#define AW87391_AK2F_S_41 2 +#define AW87391_AK2F_S_82 3 + +#define AW87391_SYSST_REG (0x06) +#define AW87391_UVLO BIT(7) +#define AW87391_OTN BIT(6) +#define AW87391_OC_FLAG BIT(5) +#define AW87391_ADAP_CP BIT(4) +#define AW87391_STARTOK BIT(3) +#define AW87391_CP_OVP BIT(2) +#define AW87391_PORN BIT(1) + +#define AW87391_SYSINT_REG (0x07) +#define AW87391_UVLOI BIT(7) +#define AW87391_ONTI BIT(6) +#define AW87391_OC_FLAGI BIT(5) +#define AW87391_ADAP_CPI BIT(4) +#define AW87391_STARTOKI BIT(3) +#define AW87391_CP_OVPI BIT(2) +#define AW87391_PORNI BIT(1) + +#define AW87391_DFT_THGEN0_REG (0x63) +#define AW87391_ADAPVTH_01W (0 << 2) +#define AW87391_ADAPVTH_02W (1 << 2) +#define AW87391_ADAPVTH_03W (2 << 2) +#define AW87391_ADAPVTH_04W (3 << 2) + +#define AW87391_I2C_NAME "aw87391" + #define AW87390_PROFILE_EXT(xname, profile_info, profile_get, profile_set) \ { \ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \ @@ -63,6 +147,7 @@ enum aw87390_id { AW87390_CHIP_ID = 0x76, + AW87391_CHIP_ID = 0xc1, }; enum { @@ -80,6 +165,7 @@ struct aw87390 { struct mutex lock; struct regmap *regmap; struct aw_container *aw_cfg; + struct regulator *vdd_reg; }; #endif