From nobody Tue Oct 7 23:21:02 2025 Received: from ahti.lucaweiss.eu (ahti.lucaweiss.eu [128.199.32.197]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 331F7251791; Sat, 5 Jul 2025 12:13:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=128.199.32.197 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751717614; cv=none; b=H1Sda0h8KF6V/Ww9wj/lT2jlXa+CjwmYTnJIEuReWsGcjmLwozNlZv2KqpKIpAMgoJJJbn2hauJngdGlT75tXZ0ri2x2oOFvf02aX15TBye0PHg/5jNDtMExgIEHT7Z7KfTJsHKPWpNwLlMusSfs2M0I+gLbm/50/xYxysQkTTk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751717614; c=relaxed/simple; bh=BJB4RVt/O7kRzpaz/CbQjaEb6lDEEuaHz7Yjg+71KzE=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=fBJofEfOtKGLZ0tuB7R2Etmnm4CAKaxD1HYkARYKeDdl9KKCkYOqKf141O8UnYyLcKo8YuAt3a3xciu8kP2Ou/8BEApORSwfO2OyO3sy6Je2HaEmV2J/RnHhtLPgY2BQLe0h9eI57MRnPquep6aWADLjYf8M/fmYobtyWOEVtAA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=lucaweiss.eu; spf=pass smtp.mailfrom=lucaweiss.eu; dkim=pass (1024-bit key) header.d=lucaweiss.eu header.i=@lucaweiss.eu header.b=YivIFP33; arc=none smtp.client-ip=128.199.32.197 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=lucaweiss.eu Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=lucaweiss.eu Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=lucaweiss.eu header.i=@lucaweiss.eu header.b="YivIFP33" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=lucaweiss.eu; s=s1; t=1751716995; bh=BJB4RVt/O7kRzpaz/CbQjaEb6lDEEuaHz7Yjg+71KzE=; h=From:Date:Subject:References:In-Reply-To:To:Cc; b=YivIFP33ADyIJ+gGVd0qbuB/hdGLFYmFTA+aY8F4XhWHm8GJK3XrI+ilj6V9d60hM CjeOfrX4MONfUnIEar/42ovRQWFeXbLSgKjjH32jfks6frvJDkTWpFPA2x7KOcx7fq r+XnE5qw8kduDwJPwBesAQym0j3Tys5oErs79VMY= From: Luca Weiss Date: Sat, 05 Jul 2025 14:03:06 +0200 Subject: [PATCH v2 2/3] ASoC: codecs: Add Awinic AW8898 amplifier driver Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250705-aw8898-v2-2-9c3adb1fc1a2@lucaweiss.eu> References: <20250705-aw8898-v2-0-9c3adb1fc1a2@lucaweiss.eu> In-Reply-To: <20250705-aw8898-v2-0-9c3adb1fc1a2@lucaweiss.eu> To: ~postmarketos/upstreaming@lists.sr.ht, phone-devel@vger.kernel.org, Liam Girdwood , Mark Brown , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Jaroslav Kysela , Takashi Iwai , Bjorn Andersson , Konrad Dybcio , Weidong Wang Cc: linux-sound@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, Luca Weiss X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=17495; i=luca@lucaweiss.eu; h=from:subject:message-id; bh=BJB4RVt/O7kRzpaz/CbQjaEb6lDEEuaHz7Yjg+71KzE=; b=owEBbQKS/ZANAwAKAXLYQ7idTddWAcsmYgBoaRSA70bvTcG/eI1ZPLNI/84nfhs8nlhmAEi5j l+q/6idJDOJAjMEAAEKAB0WIQQ5utIvCCzakboVj/py2EO4nU3XVgUCaGkUgAAKCRBy2EO4nU3X Vk/BD/9jsy5anR30EndOwPbdQxYuquK4KVJT7cHOZ+RpOjakQt1LaIeGaF5+/KNIELbmGfUKCsr UiAVSXiDPJepmAWzvPr1F0FuF/fVMXkH6kTsVhqQML2MHX5xNWJAQNxeoM/ovhGS6fz0l85rY8N dW01WDzmh9SBzPtu2K1g37UDKhKomAYAqCGfaKs8/ZiWriMeqDDREIiskecHyBBYU8sUnPvDLqR CKi7ahVYcUQpnFMhE6elk+b9Bdo9DmLGbCU9nDrzqurVcpghzkIsG4muWisliTqCWjb33EDzW05 iEj2DnB+B3gmCRfSB6XZ4Std/829mMmHCz1S7CGmdf1NW2d4rthGo5f1D+TndkJ74e0rRElxPIU 3yc1mCiyFoBTRmHEeitt39y/iYElLMx7F8L2kT/gGzeJgWgGIJ/IIsBmVwB3tLoQ3q4XLzI/XB3 OdOwKWETpt5XXyex1a3+8zXxn1F5rtHD8sugTxw/k4aSdxT1fq9z8HgQjW9NJmz80s1XWGMoS81 pFcadUrbee92bSuabSJI/YmCioH0gPr5l1ZZLfutSdO394q75LKM6LejpkGze5ynUsRHOSMIiQU 01aquZcDSt2iC9Y/Ctz4g5YjclxVp4lnOMMIcF8DkuQLqD/mntxc0xP3Xe8w9r8ZUoLhhQgjf7D oU92fo9rgMihUeA== X-Developer-Key: i=luca@lucaweiss.eu; a=openpgp; fpr=BD04DA24C971B8D587B2B8D7FAF69CF6CD2D02CD Add a driver for the AW8898 Audio Amplifier. Signed-off-by: Luca Weiss --- sound/soc/codecs/Kconfig | 10 + sound/soc/codecs/Makefile | 1 + sound/soc/codecs/snd-soc-aw8898.c | 561 ++++++++++++++++++++++++++++++++++= ++++ 3 files changed, 572 insertions(+) diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig index 6d7e4725d89cd33647770e4f2c4e81445b8335ce..18b0d356fdd2a085ce3adaded67= 1ae639e925718 100644 --- a/sound/soc/codecs/Kconfig +++ b/sound/soc/codecs/Kconfig @@ -61,6 +61,7 @@ config SND_SOC_ALL_CODECS imply SND_SOC_AW88166 imply SND_SOC_AW88261 imply SND_SOC_AW88399 + imply SND_SOC_AW8898 imply SND_SOC_BT_SCO imply SND_SOC_BD28623 imply SND_SOC_CHV3_CODEC @@ -744,6 +745,15 @@ config SND_SOC_AW88399 digital Smart K audio amplifier and SKTune speaker protection algorithms. =20 +config SND_SOC_AW8898 + tristate "Awinic AW8898 Audio Amplifier" + depends on I2C + select REGMAP_I2C + select GPIOLIB + help + Enable support for the Awinic AW8898 audio amplifier with I2C + control. + config SND_SOC_BD28623 tristate "ROHM BD28623 CODEC" help diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile index a68c3d192a1b6ccec513c6bc447c29be532ea70c..1006b7c3d94e3be3402e3c6b1d8= 1eecfe828f94e 100644 --- a/sound/soc/codecs/Makefile +++ b/sound/soc/codecs/Makefile @@ -481,6 +481,7 @@ obj-$(CONFIG_SND_SOC_AW88395) +=3Dsnd-soc-aw88395.o obj-$(CONFIG_SND_SOC_AW88166) +=3Dsnd-soc-aw88166.o obj-$(CONFIG_SND_SOC_AW88261) +=3Dsnd-soc-aw88261.o obj-$(CONFIG_SND_SOC_AW88399) +=3D snd-soc-aw88399.o +obj-$(CONFIG_SND_SOC_AW8898) +=3D snd-soc-aw8898.o obj-$(CONFIG_SND_SOC_BD28623) +=3D snd-soc-bd28623.o obj-$(CONFIG_SND_SOC_BT_SCO) +=3D snd-soc-bt-sco.o obj-$(CONFIG_SND_SOC_CHV3_CODEC) +=3D snd-soc-chv3-codec.o diff --git a/sound/soc/codecs/snd-soc-aw8898.c b/sound/soc/codecs/snd-soc-a= w8898.c new file mode 100644 index 0000000000000000000000000000000000000000..6d60719777de9017a5419ec548a= 586352e86b60b --- /dev/null +++ b/sound/soc/codecs/snd-soc-aw8898.c @@ -0,0 +1,561 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +// +// Copyright (c) 2018 AWINIC Technology CO., LTD +// Author: Nick Li +// +// Copyright (c) 2025 Luca Weiss + +#include +#include +#include +#include +#include +#include +#include +#include + +/* Chip ID */ +#define AW8898_ID 0x00 +#define AW8898_CHIP_ID 0x1702 + +/* System Status */ +#define AW8898_SYSST 0x01 +#define AW8898_SYSST_PLLS GENMASK(0, 0) + +/* System Control */ +#define AW8898_SYSCTRL 0x04 +#define AW8898_SYSCTRL_MODE_MASK GENMASK(7, 7) +#define AW8898_SYSCTRL_RCV_MODE (1) +#define AW8898_SYSCTRL_SPK_MODE (0) +#define AW8898_SYSCTRL_PW_MASK GENMASK(0, 0) +#define AW8898_SYSCTRL_PW_PDN (1) +#define AW8898_SYSCTRL_PW_ACTIVE (0) + +/* I2S Interface Control */ +#define AW8898_I2SCTRL 0x05 +#define AW8898_I2SCTRL_FMS_MASK GENMASK(7, 6) +#define AW8898_I2SCTRL_FMS_32BIT (3) +#define AW8898_I2SCTRL_FMS_24BIT (2) +#define AW8898_I2SCTRL_FMS_20BIT (1) +#define AW8898_I2SCTRL_FMS_16BIT (0) +#define AW8898_I2SCTRL_SR_MASK GENMASK(3, 0) +#define AW8898_I2SCTRL_SR_48K (8) +#define AW8898_I2SCTRL_SR_44P1K (7) +#define AW8898_I2SCTRL_SR_32K (6) +#define AW8898_I2SCTRL_SR_16K (3) +#define AW8898_I2SCTRL_SR_8K (0) + +/* PWM Control */ +#define AW8898_PWMCTRL 0x08 +#define AW8898_PWMCTRL_HMUTE_MASK GENMASK(0, 0) +#define AW8898_PWMCTRL_HMUTE_ENABLE (1) +#define AW8898_PWMCTRL_HMUTE_DISABLE (0) + +/* Hardware AGC Configuration 7 */ +#define AW8898_HAGCCFG7 0x0f +#define AW8898_HAGCCFG7_VOL_REG_SHIFT (8) /* bits 15-8 */ +#define AW8898_VOLUME_MAX (255) +#define AW8898_VOLUME_MIN (0) + +#define AW8898_MAX_REGISTER 0xff + +#define AW8898_CFG_NAME "aw8898_cfg.bin" + +#define AW8898_NUM_SUPPLIES 3 +static const char *aw8898_supply_names[AW8898_NUM_SUPPLIES] =3D { + "vdd", /* Battery power */ + "vddio", /* Digital IO power */ + "dvdd", /* Digital power */ +}; + +static const char * const aw8898_dev_mode_text[] =3D { + "Speaker", + "Receiver", +}; + +enum aw8898_mode { + AW8898_SPEAKER, + AW8898_RECEIVER, +}; + +static const struct soc_enum aw8898_dev_mode_enum =3D + SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(aw8898_dev_mode_text), aw8898_dev_mode_tex= t); + +struct aw8898 { + struct snd_soc_component *component; + struct regmap *regmap; + struct i2c_client *client; + struct gpio_desc *reset; + struct regulator_bulk_data supplies[AW8898_NUM_SUPPLIES]; + enum aw8898_mode dev_mode; + bool cfg_loaded; +}; + +struct aw8898_cfg { + int len; + struct { + __le16 addr; + __le16 val; + } __packed data[]; +}; + +static void aw8898_set_power(struct aw8898 *aw8898, bool on) +{ + unsigned int val =3D AW8898_SYSCTRL_PW_PDN; + + if (on) + val =3D AW8898_SYSCTRL_PW_ACTIVE; + + regmap_update_bits(aw8898->regmap, AW8898_SYSCTRL, + AW8898_SYSCTRL_PW_MASK, + FIELD_PREP(AW8898_SYSCTRL_PW_MASK, val)); +} + +static void aw8898_update_dev_mode(struct aw8898 *aw8898) +{ + unsigned int mode =3D AW8898_SYSCTRL_SPK_MODE; + + if (aw8898->dev_mode =3D=3D AW8898_RECEIVER) + mode =3D AW8898_SYSCTRL_RCV_MODE; + + regmap_update_bits(aw8898->regmap, AW8898_SYSCTRL, + AW8898_SYSCTRL_MODE_MASK, + FIELD_PREP(AW8898_SYSCTRL_MODE_MASK, mode)); +} + +static void aw8898_cfg_write(struct aw8898 *aw8898, + struct aw8898_cfg *aw8898_cfg) +{ + for (int i =3D 0; i < aw8898_cfg->len; i++) { + unsigned int addr =3D __le32_to_cpu(aw8898_cfg->data[i].addr); + unsigned int val =3D __le32_to_cpu(aw8898_cfg->data[i].val); + + dev_dbg(&aw8898->client->dev, "cfg reg =3D 0x%04x, val =3D 0x%04x\n", ad= dr, val); + regmap_write(aw8898->regmap, addr, val); + } +} + +static void aw8898_fw_loaded(const struct firmware *fw, void *context) +{ + struct aw8898 *aw8898 =3D context; + struct aw8898_cfg *aw8898_cfg; + + if (!fw) { + dev_err(&aw8898->client->dev, "Failed to load firmware\n"); + return; + } + + dev_dbg(&aw8898->client->dev, "Loaded %s - size: %zu\n", AW8898_CFG_NAME,= fw->size); + + if (fw->size % 4 !=3D 0) { + dev_err(&aw8898->client->dev, "Invalid firmware size %zu\n", fw->size); + release_firmware(fw); + return; + } + + aw8898_cfg =3D kzalloc(sizeof(int) + fw->size, GFP_KERNEL); + if (!aw8898_cfg) { + release_firmware(fw); + return; + } + + aw8898_cfg->len =3D fw->size / 4; + memcpy(aw8898_cfg->data, fw->data, fw->size); + + release_firmware(fw); + + aw8898_cfg_write(aw8898, aw8898_cfg); + + kfree(aw8898_cfg); + + aw8898->cfg_loaded =3D true; + + aw8898_update_dev_mode(aw8898); +} + +static void aw8898_cold_start(struct aw8898 *aw8898) +{ + int err; + + err =3D request_firmware_nowait(THIS_MODULE, FW_ACTION_UEVENT, + AW8898_CFG_NAME, &aw8898->client->dev, GFP_KERNEL, + aw8898, aw8898_fw_loaded); + if (err) + dev_err(&aw8898->client->dev, "Firmware load request failed: %d\n", err); +} + +static int aw8898_dev_mode_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_component *component =3D snd_soc_kcontrol_component(kcontr= ol); + struct aw8898 *aw8898 =3D snd_soc_component_get_drvdata(component); + + ucontrol->value.enumerated.item[0] =3D aw8898->dev_mode; + + return 0; +} + +static int aw8898_dev_mode_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_component *component =3D snd_soc_kcontrol_component(kcontr= ol); + struct aw8898 *aw8898 =3D snd_soc_component_get_drvdata(component); + + if (ucontrol->value.enumerated.item[0] > 1) + return -EINVAL; + + if (aw8898->dev_mode =3D=3D ucontrol->value.enumerated.item[0]) + return 0; + + aw8898->dev_mode =3D ucontrol->value.enumerated.item[0]; + + aw8898_update_dev_mode(aw8898); + + return 1; +} + +/* + * -127.5 dB min, 0.5 dB steps, no mute + * Note: The official datasheet claims to be able to attenuate between 0 d= B and + * -96 dB with 0.5 dB/step, but the register values are 0-255 so this does= n't + * really line up. It's a best guess. + */ +static const DECLARE_TLV_DB_SCALE(vol_tlv, -12750, 50, 0); + +static struct snd_kcontrol_new aw8898_controls[] =3D { + SOC_ENUM_EXT("Amp Mode", aw8898_dev_mode_enum, + aw8898_dev_mode_get, aw8898_dev_mode_put), + SOC_SINGLE_RANGE_TLV("RX Volume", AW8898_HAGCCFG7, + AW8898_HAGCCFG7_VOL_REG_SHIFT, + AW8898_VOLUME_MIN, AW8898_VOLUME_MAX, 1, vol_tlv), +}; + +static int aw8898_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) +{ + struct snd_soc_component *component =3D dai->component; + + switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { + case SND_SOC_DAIFMT_I2S: + if ((fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) + !=3D SND_SOC_DAIFMT_CBC_CFC) { + dev_err(component->dev, "Invalid codec master mode: %d\n", + fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK); + return -EINVAL; + } + break; + default: + dev_err(component->dev, "Unsupported DAI format %d\n", + fmt & SND_SOC_DAIFMT_FORMAT_MASK); + return -EINVAL; + } + + return 0; +} + +static int aw8898_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params, + struct snd_soc_dai *dai) +{ + struct snd_soc_component *component =3D dai->component; + struct aw8898 *aw8898 =3D snd_soc_component_get_drvdata(dai->component); + unsigned int val; + + switch (params_rate(params)) { + case 8000: + val =3D AW8898_I2SCTRL_SR_8K; + break; + case 16000: + val =3D AW8898_I2SCTRL_SR_16K; + break; + case 32000: + val =3D AW8898_I2SCTRL_SR_32K; + break; + case 44100: + val =3D AW8898_I2SCTRL_SR_44P1K; + break; + case 48000: + val =3D AW8898_I2SCTRL_SR_48K; + break; + default: + dev_err(component->dev, "Unsupported sample rate: %d\n", + params_rate(params)); + return -EINVAL; + } + + regmap_update_bits(aw8898->regmap, AW8898_I2SCTRL, + AW8898_I2SCTRL_SR_MASK, + FIELD_PREP(AW8898_I2SCTRL_SR_MASK, val)); + + switch (params_width(params)) { + case 16: + val =3D AW8898_I2SCTRL_FMS_16BIT; + break; + case 20: + val =3D AW8898_I2SCTRL_FMS_20BIT; + break; + case 24: + val =3D AW8898_I2SCTRL_FMS_24BIT; + break; + case 32: + val =3D AW8898_I2SCTRL_FMS_32BIT; + break; + default: + dev_err(component->dev, "Unsupported sample size: %d\n", + params_width(params)); + return -EINVAL; + } + + regmap_update_bits(aw8898->regmap, AW8898_I2SCTRL, + AW8898_I2SCTRL_FMS_MASK, + FIELD_PREP(AW8898_I2SCTRL_FMS_MASK, val)); + + return 0; +} + +static int aw8898_mute(struct snd_soc_dai *dai, int mute, int stream) +{ + struct aw8898 *aw8898 =3D snd_soc_component_get_drvdata(dai->component); + unsigned int val =3D AW8898_PWMCTRL_HMUTE_DISABLE; + + if (mute) + val =3D AW8898_PWMCTRL_HMUTE_ENABLE; + + regmap_update_bits(aw8898->regmap, AW8898_PWMCTRL, + AW8898_PWMCTRL_HMUTE_MASK, + FIELD_PREP(AW8898_PWMCTRL_HMUTE_MASK, val)); + + return 0; +} + +static int aw8898_startup(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct aw8898 *aw8898 =3D snd_soc_component_get_drvdata(dai->component); + unsigned int val; + int err; + + err =3D regmap_read_poll_timeout(aw8898->regmap, AW8898_SYSST, + val, val & AW8898_SYSST_PLLS, + 2000, 1 * USEC_PER_SEC); + if (err) { + dev_err(&aw8898->client->dev, "iis signal check error: %d\n", err); + aw8898_set_power(aw8898, false); + return err; + } + + return 0; +} + +static const struct snd_soc_dai_ops aw8898_dai_ops =3D { + .startup =3D aw8898_startup, + .set_fmt =3D aw8898_set_fmt, + .hw_params =3D aw8898_hw_params, + .mute_stream =3D aw8898_mute, +}; + +#define AW8898_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \ + SNDRV_PCM_FMTBIT_S24_LE | \ + SNDRV_PCM_FMTBIT_S32_LE) + +static struct snd_soc_dai_driver aw8898_dai[] =3D { + { + .name =3D "aw8898-amplifier", + .playback =3D { + .stream_name =3D "Playback", + .channels_min =3D 1, + .channels_max =3D 2, + .rates =3D SNDRV_PCM_RATE_8000_48000, + .formats =3D AW8898_FORMATS, + }, + .capture =3D { + .stream_name =3D "Capture", + .channels_min =3D 1, + .channels_max =3D 2, + .rates =3D SNDRV_PCM_RATE_8000_48000, + .formats =3D AW8898_FORMATS, + }, + .ops =3D &aw8898_dai_ops, + .symmetric_rate =3D 1, + .symmetric_channels =3D 1, + .symmetric_sample_bits =3D 1, + }, +}; + +static int aw8898_component_probe(struct snd_soc_component *component) +{ + struct aw8898 *aw8898 =3D snd_soc_component_get_drvdata(component); + + aw8898->component =3D component; + + return 0; +} + +static int aw8898_drv_event(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event) +{ + struct snd_soc_component *component =3D snd_soc_dapm_to_component(w->dapm= ); + struct aw8898 *aw8898 =3D snd_soc_component_get_drvdata(component); + int ret; + + switch (event) { + case SND_SOC_DAPM_PRE_PMU: + aw8898_set_power(aw8898, true); + + if (!aw8898->cfg_loaded) + aw8898_cold_start(aw8898); + + ret =3D 0; + break; + case SND_SOC_DAPM_POST_PMD: + aw8898_set_power(aw8898, false); + ret =3D 0; + break; + default: + dev_err(component->dev, "%s: invalid event %d\n", __func__, event); + ret =3D -EINVAL; + } + + return ret; +} + +static const struct snd_soc_dapm_widget aw8898_dapm_widgets[] =3D { + SND_SOC_DAPM_INPUT("IN"), + SND_SOC_DAPM_PGA_E("SPK PA", SND_SOC_NOPM, 0, 0, NULL, 0, aw8898_drv_even= t, + SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), + SND_SOC_DAPM_OUTPUT("OUT"), +}; + +static const struct snd_soc_dapm_route aw8898_dapm_routes[] =3D { + { "SPK PA", NULL, "IN" }, + { "OUT", NULL, "SPK PA" }, +}; + +static const struct snd_soc_component_driver soc_component_dev_aw8898 =3D { + .probe =3D aw8898_component_probe, + .dapm_widgets =3D aw8898_dapm_widgets, + .num_dapm_widgets =3D ARRAY_SIZE(aw8898_dapm_widgets), + .dapm_routes =3D aw8898_dapm_routes, + .num_dapm_routes =3D ARRAY_SIZE(aw8898_dapm_routes), + .controls =3D aw8898_controls, + .num_controls =3D ARRAY_SIZE(aw8898_controls), +}; + +static const struct regmap_config aw8898_regmap =3D { + .reg_bits =3D 8, + .val_bits =3D 16, + + .max_register =3D AW8898_MAX_REGISTER, + .cache_type =3D REGCACHE_MAPLE, +}; + +static void aw8898_reset(struct aw8898 *aw8898) +{ + gpiod_set_value_cansleep(aw8898->reset, 1); + fsleep(1000); + gpiod_set_value_cansleep(aw8898->reset, 0); + fsleep(1000); +} + +static int aw8898_check_chipid(struct aw8898 *aw8898) +{ + unsigned int reg; + int ret; + + ret =3D regmap_read(aw8898->regmap, AW8898_ID, ®); + if (ret < 0) { + dev_err(&aw8898->client->dev, + "Failed to read register AW8898_ID: %d\n", ret); + return ret; + } + + dev_dbg(&aw8898->client->dev, "Read chip ID 0x%x\n", reg); + + if (reg !=3D AW8898_CHIP_ID) { + dev_err(&aw8898->client->dev, "Unexpected chip ID: 0x%x\n", + reg); + return -EINVAL; + } + + return 0; +} + +static int aw8898_probe(struct i2c_client *client) +{ + struct aw8898 *aw8898; + int ret; + + aw8898 =3D devm_kzalloc(&client->dev, sizeof(*aw8898), GFP_KERNEL); + if (!aw8898) + return -ENOMEM; + + i2c_set_clientdata(client, aw8898); + aw8898->client =3D client; + + aw8898->regmap =3D devm_regmap_init_i2c(client, &aw8898_regmap); + if (IS_ERR(aw8898->regmap)) + return dev_err_probe(&client->dev, PTR_ERR(aw8898->regmap), + "Failed to allocate register map\n"); + + for (int i =3D 0; i < ARRAY_SIZE(aw8898->supplies); i++) + aw8898->supplies[i].supply =3D aw8898_supply_names[i]; + + ret =3D devm_regulator_bulk_get(&client->dev, ARRAY_SIZE(aw8898->supplies= ), + aw8898->supplies); + if (ret) + return dev_err_probe(&client->dev, ret, + "Failed to get regulators\n"); + + ret =3D regulator_bulk_enable(ARRAY_SIZE(aw8898->supplies), + aw8898->supplies); + if (ret) { + dev_err(&client->dev, "Failed to enable supplies: %d\n", + ret); + return ret; + } + + aw8898->reset =3D devm_gpiod_get(&client->dev, "reset", GPIOD_OUT_HIGH); + if (IS_ERR(aw8898->reset)) + return dev_err_probe(&client->dev, PTR_ERR(aw8898->reset), + "Failed to get reset GPIO\n"); + + aw8898_reset(aw8898); + + ret =3D aw8898_check_chipid(aw8898); + if (ret) + return dev_err_probe(&client->dev, ret, "Chip ID check failed\n"); + + dev_set_drvdata(&client->dev, aw8898); + + ret =3D devm_snd_soc_register_component(&client->dev, &soc_component_dev_= aw8898, + aw8898_dai, ARRAY_SIZE(aw8898_dai)); + if (ret < 0) + return dev_err_probe(&client->dev, ret, "Failed to register component\n"= ); + + return 0; +} + +static const struct i2c_device_id aw8898_id[] =3D { + { "aw8898" }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(i2c, aw8898_id); + +static const struct of_device_id aw8898_of_match[] =3D { + { .compatible =3D "awinic,aw8898" }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, aw8898_of_match); + +static struct i2c_driver aw8898_driver =3D { + .driver =3D { + .name =3D "aw8898", + .of_match_table =3D aw8898_of_match, + }, + .probe =3D aw8898_probe, + .id_table =3D aw8898_id, +}; + +module_i2c_driver(aw8898_driver); + +MODULE_DESCRIPTION("AW8898 Audio amplifier driver"); +MODULE_LICENSE("GPL"); --=20 2.50.0