From patchwork Wed Sep 25 14:52:44 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Igor Prusov X-Patchwork-Id: 13812072 Received: from mx1.sberdevices.ru (mx2.sberdevices.ru [45.89.224.132]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B8F3F184532; Wed, 25 Sep 2024 14:53:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.89.224.132 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727276034; cv=none; b=QL40WBgjR6wqkGFoH9UqKz+AR+NTirQfEecMM3j5kutVE4sDYq76EwSN4uwJtLUQiSf+axgppsB+HPCOgWsJCHo8cmw2gruxl7EiAbvUh5pMEiMzUlYQKTTEvgZ9oEUvwYCLWWUzNw/GvPZUK8pnMFaFhFL6yyRRdQk3JcceDOQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727276034; c=relaxed/simple; bh=rKKHbNEk82zvqLDpZSeHb9VNj6iTqmA1Pihea/kiG2g=; h=From:Date:Subject:MIME-Version:Content-Type:Message-ID:References: In-Reply-To:To:CC; b=BIN5x1EFWwxoyCqRZlLZgmldU8iEpY5cfuAO04qTxPTX+H9jl6LcxsteEgC/jSsuTG7OGJ3h5vyIlBcDvqRxvRQyM+Rf7Gm/fJifQXnp7Izk2FhQCCd32QIRcv1+tjAtN04WPyBEeVa38e7NiuMTOy2w0iZETKf/XfWkzsw125w= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=salutedevices.com; spf=pass smtp.mailfrom=salutedevices.com; dkim=pass (2048-bit key) header.d=salutedevices.com header.i=@salutedevices.com header.b=rZJwKY4R; arc=none smtp.client-ip=45.89.224.132 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=salutedevices.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=salutedevices.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=salutedevices.com header.i=@salutedevices.com header.b="rZJwKY4R" Received: from p-infra-ksmg-sc-msk02.sberdevices.ru (localhost [127.0.0.1]) by mx1.sberdevices.ru (Postfix) with ESMTP id B9078120023; Wed, 25 Sep 2024 17:53:40 +0300 (MSK) DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.sberdevices.ru B9078120023 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=salutedevices.com; s=mail; t=1727276020; bh=OUUKZHCJdbGKzTK7PdAbRtM9ujeZrTUFCVvR/b2xWsM=; h=From:Date:Subject:MIME-Version:Content-Type:Message-ID:To:From; b=rZJwKY4RZ6IkeIWxF8tUubbW1BbVtEc8QFm5yvzybLQCGx61yTjT9CTZhtvDdMbBK VVvgEpt2hycc1lHdtAq3qwXz+N3ESb+k98ZnlvdOBi2PUSiKUL+tGYwGIsJbKwPHCQ +6cVja+3I/jqCKneot31jmg1fEjK21zEf8Ey3fi/5ervPvM2BBF8GpBw4m/PKyt+ut unJ7nr+1PcpKWWGSViKeJi/z6gi5QG5Uo1YdItS52bGqqhIzRScMOJUEbBeAZTGsGb kTmlXDmk2q5wkJWx2iqGxE++Oefg4gglNFH5Q9JLoLJ4otFpPQWy62Mey3HfsRmPkx CTsBs9hcHelcw== Received: from smtp.sberdevices.ru (p-i-exch-sc-m01.sberdevices.ru [172.16.192.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.sberdevices.ru (Postfix) with ESMTPS; Wed, 25 Sep 2024 17:53:40 +0300 (MSK) From: Igor Prusov Date: Wed, 25 Sep 2024 17:52:44 +0300 Subject: [PATCH v3 6/6] ASoC: codecs: Add NeoFidelity NTP8835 codec Precedence: bulk X-Mailing-List: linux-sound@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-ID: <20240925-ntp-amps-8918-8835-v3-6-e2459a8191a6@salutedevices.com> References: <20240925-ntp-amps-8918-8835-v3-0-e2459a8191a6@salutedevices.com> In-Reply-To: <20240925-ntp-amps-8918-8835-v3-0-e2459a8191a6@salutedevices.com> To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Liam Girdwood , "Mark Brown" , Jaroslav Kysela , Takashi Iwai , Igor Prusov , Philipp Zabel CC: , , , , X-Mailer: b4 0.14.2 X-ClientProxiedBy: p-i-exch-a-m2.sberdevices.ru (172.24.196.120) To p-i-exch-a-m1.sberdevices.ru (172.24.196.116) X-KSMG-Rule-ID: 10 X-KSMG-Message-Action: clean X-KSMG-AntiSpam-Lua-Profiles: 187980 [Sep 25 2024] X-KSMG-AntiSpam-Version: 6.1.0.4 X-KSMG-AntiSpam-Envelope-From: ivprusov@salutedevices.com X-KSMG-AntiSpam-Rate: 0 X-KSMG-AntiSpam-Status: not_detected X-KSMG-AntiSpam-Method: none X-KSMG-AntiSpam-Auth: dkim=none X-KSMG-AntiSpam-Info: LuaCore: 34 0.3.34 8a1fac695d5606478feba790382a59668a4f0039, {Tracking_uf_ne_domains}, {Tracking_from_domain_doesnt_match_to}, 127.0.0.199:7.1.2;d41d8cd98f00b204e9800998ecf8427e.com:7.1.1;salutedevices.com:7.1.1;www.cpbay.com:7.1.1;smtp.sberdevices.ru:7.1.1,5.0.1, FromAlignment: s X-MS-Exchange-Organization-SCL: -1 X-KSMG-AntiSpam-Interceptor-Info: scan successful X-KSMG-AntiPhishing: Clean, bases: 2024/09/25 12:44:00 X-KSMG-LinksScanning: Clean, bases: 2024/09/25 12:44:00 X-KSMG-AntiVirus: Kaspersky Secure Mail Gateway, version 2.0.1.6960, bases: 2024/09/25 13:22:00 #26670925 X-KSMG-AntiVirus-Status: Clean, skipped The NeoFidelity NTP8835 adn NTP8835C are 2.1 channel amplifiers with mixer and biquad filters. Both amplifiers have identical programming interfaces but differ in output signal characteristics. Datasheet: https://www.cpbay.com/Uploads/20210225/6037116a3ea91.pdf Datasheet: https://www.cpbay.com/Uploads/20210918/61458b2f2631e.pdf Signed-off-by: Igor Prusov --- sound/soc/codecs/Kconfig | 5 + sound/soc/codecs/Makefile | 2 + sound/soc/codecs/ntp8835.c | 480 +++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 487 insertions(+) diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig index 03eb9512d2239782faf1ed3a3315e94c9e583c53..c6c4c7481b4ca4938bdcabb1e22514ddd2bc5ca4 100644 --- a/sound/soc/codecs/Kconfig +++ b/sound/soc/codecs/Kconfig @@ -2573,6 +2573,11 @@ config SND_SOC_NTP8918 tristate "NeoFidelity NTP8918 amplifier" depends on I2C +config SND_SOC_NTP8835 + select SND_SOC_NTPFW + tristate "NeoFidelity NTP8835 and NTP8835C amplifiers" + depends on I2C + config SND_SOC_TPA6130A2 tristate "Texas Instruments TPA6130A2 headphone amplifier" depends on I2C diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile index 9e72c28d193b21a0b0ac4fb3dfbaea5e4252a66c..850c6249e3dfedb3d59897b57c6a731b6fbf517e 100644 --- a/sound/soc/codecs/Makefile +++ b/sound/soc/codecs/Makefile @@ -189,6 +189,7 @@ snd-soc-nau8821-y := nau8821.o snd-soc-nau8822-y := nau8822.o snd-soc-nau8824-y := nau8824.o snd-soc-nau8825-y := nau8825.o +snd-soc-ntp8835-y := ntp8835.o snd-soc-ntp8918-y := ntp8918.o snd-soc-ntpfw-y := ntpfw.o snd-soc-hdmi-codec-y := hdmi-codec.o @@ -593,6 +594,7 @@ obj-$(CONFIG_SND_SOC_NAU8821) += snd-soc-nau8821.o obj-$(CONFIG_SND_SOC_NAU8822) += snd-soc-nau8822.o obj-$(CONFIG_SND_SOC_NAU8824) += snd-soc-nau8824.o obj-$(CONFIG_SND_SOC_NAU8825) += snd-soc-nau8825.o +obj-$(CONFIG_SND_SOC_NTP8835) += snd-soc-ntp8835.o obj-$(CONFIG_SND_SOC_NTP8918) += snd-soc-ntp8918.o obj-$(CONFIG_SND_SOC_NTPFW) += snd-soc-ntpfw.o obj-$(CONFIG_SND_SOC_HDMI_CODEC) += snd-soc-hdmi-codec.o diff --git a/sound/soc/codecs/ntp8835.c b/sound/soc/codecs/ntp8835.c new file mode 100644 index 0000000000000000000000000000000000000000..97056d8de2bba334269b4bc07116a174eef2a95c --- /dev/null +++ b/sound/soc/codecs/ntp8835.c @@ -0,0 +1,480 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Driver for the NTP8835/NTP8835C Audio Amplifiers + * + * Copyright (c) 2024, SaluteDevices. All Rights Reserved. + * + * Author: Igor Prusov + */ + +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include + +#include "ntpfw.h" + +#define NTP8835_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \ + SNDRV_PCM_FMTBIT_S20_3LE | \ + SNDRV_PCM_FMTBIT_S24_LE | \ + SNDRV_PCM_FMTBIT_S32_LE) + +#define NTP8835_INPUT_FMT 0x0 +#define NTP8835_INPUT_FMT_MASTER_MODE BIT(0) +#define NTP8835_INPUT_FMT_GSA_MODE BIT(1) +#define NTP8835_GSA_FMT 0x1 +#define NTP8835_GSA_BS_MASK GENMASK(3, 2) +#define NTP8835_GSA_BS(x) ((x) << 2) +#define NTP8835_GSA_RIGHT_J BIT(0) +#define NTP8835_GSA_LSB BIT(1) +#define NTP8835_MCLK_FREQ_CTRL 0x2 +#define NTP8835_MCLK_FREQ_MCF GENMASK(1, 0) +#define NTP8835_SOFT_MUTE 0x26 +#define NTP8835_SOFT_MUTE_SM1 BIT(0) +#define NTP8835_SOFT_MUTE_SM2 BIT(1) +#define NTP8835_SOFT_MUTE_SM3 BIT(2) +#define NTP8835_PWM_SWITCH 0x27 +#define NTP8835_PWM_SWITCH_POF1 BIT(0) +#define NTP8835_PWM_SWITCH_POF2 BIT(1) +#define NTP8835_PWM_SWITCH_POF3 BIT(2) +#define NTP8835_PWM_MASK_CTRL0 0x28 +#define NTP8835_PWM_MASK_CTRL0_OUT_LOW BIT(1) +#define NTP8835_PWM_MASK_CTRL0_FPMLD BIT(2) +#define NTP8835_MASTER_VOL 0x2e +#define NTP8835_CHNL_A_VOL 0x2f +#define NTP8835_CHNL_B_VOL 0x30 +#define NTP8835_CHNL_C_VOL 0x31 +#define REG_MAX NTP8835_CHNL_C_VOL + +#define NTP8835_FW_NAME "eq_8835.bin" +#define NTP8835_FW_MAGIC 0x38383335 /* "8835" */ + +struct ntp8835_priv { + struct i2c_client *i2c; + struct reset_control *reset; + unsigned int format; + struct clk *mclk; + unsigned int mclk_rate; +}; + +static const DECLARE_TLV_DB_RANGE(ntp8835_vol_scale, + 0, 1, TLV_DB_SCALE_ITEM(-15000, 0, 0), + 2, 6, TLV_DB_SCALE_ITEM(-15000, 1000, 0), + 7, 0xff, TLV_DB_SCALE_ITEM(-10000, 50, 0), +); + +static int ntp8835_mute_info(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; + uinfo->access = + (SNDRV_CTL_ELEM_ACCESS_TLV_READ | SNDRV_CTL_ELEM_ACCESS_READWRITE); + uinfo->count = 1; + + uinfo->value.integer.min = 0; + uinfo->value.integer.max = 1; + uinfo->value.integer.step = 1; + + return 0; +} + +static int ntp8835_mute_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); + unsigned int val; + + val = snd_soc_component_read(component, NTP8835_SOFT_MUTE); + + ucontrol->value.integer.value[0] = val ? 0 : 1; + return 0; +} + +static int ntp8835_mute_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); + unsigned int val; + + val = ucontrol->value.integer.value[0] ? 0 : 7; + + snd_soc_component_write(component, NTP8835_SOFT_MUTE, val); + + return 0; +} + +static const struct snd_kcontrol_new ntp8835_vol_control[] = { + SOC_SINGLE_TLV("Playback Volume", NTP8835_MASTER_VOL, 0, + 0xff, 0, ntp8835_vol_scale), + { + .iface = SNDRV_CTL_ELEM_IFACE_MIXER, + .name = "Playback Switch", + .info = ntp8835_mute_info, + .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | SNDRV_CTL_ELEM_ACCESS_READWRITE, + .get = ntp8835_mute_get, + .put = ntp8835_mute_put, + }, +}; + +static void ntp8835_reset_gpio(struct ntp8835_priv *ntp8835) +{ + /* + * Proper initialization sequence for NTP835 amplifier requires driving + * /RESET signal low during power up for at least 0.1us. The sequence is, + * according to NTP8835 datasheet, 6.2 Timing Sequence (recommended): + * Deassert for T2 >= 1ms... + */ + reset_control_deassert(ntp8835->reset); + fsleep(1000); + + /* ...Assert for T3 >= 0.1us... */ + reset_control_assert(ntp8835->reset); + fsleep(1); + + /* ...Deassert, and wait for T4 >= 0.5ms before sound on sequence. */ + reset_control_deassert(ntp8835->reset); + fsleep(500); +} + +static const struct reg_sequence ntp8835_sound_on[] = { + { NTP8835_PWM_MASK_CTRL0, NTP8835_PWM_MASK_CTRL0_FPMLD }, + { NTP8835_PWM_SWITCH, 0x00 }, + { NTP8835_SOFT_MUTE, 0x00 }, +}; + +static const struct reg_sequence ntp8835_sound_off[] = { + { NTP8835_SOFT_MUTE, NTP8835_SOFT_MUTE_SM1 | + NTP8835_SOFT_MUTE_SM2 | + NTP8835_SOFT_MUTE_SM3 }, + + { NTP8835_PWM_SWITCH, NTP8835_PWM_SWITCH_POF1 | + NTP8835_PWM_SWITCH_POF2 | + NTP8835_PWM_SWITCH_POF3 }, + + { NTP8835_PWM_MASK_CTRL0, NTP8835_PWM_MASK_CTRL0_OUT_LOW | + NTP8835_PWM_MASK_CTRL0_FPMLD }, +}; + +static int ntp8835_load_firmware(struct ntp8835_priv *ntp8835) +{ + int ret; + + ret = ntpfw_load(ntp8835->i2c, NTP8835_FW_NAME, NTP8835_FW_MAGIC); + if (ret == -ENOENT) { + dev_warn_once(&ntp8835->i2c->dev, + "Could not find firmware %s\n", NTP8835_FW_NAME); + return 0; + } + + return ret; +} + +static int ntp8835_snd_suspend(struct snd_soc_component *component) +{ + struct ntp8835_priv *ntp8835 = snd_soc_component_get_drvdata(component); + + regcache_cache_only(component->regmap, true); + + regmap_multi_reg_write_bypassed(component->regmap, + ntp8835_sound_off, + ARRAY_SIZE(ntp8835_sound_off)); + + /* + * According to NTP8835 datasheet, 6.2 Timing Sequence (recommended): + * wait after sound off for T6 >= 0.5ms + */ + fsleep(500); + reset_control_assert(ntp8835->reset); + + regcache_mark_dirty(component->regmap); + clk_disable_unprepare(ntp8835->mclk); + + return 0; +} + +static int ntp8835_snd_resume(struct snd_soc_component *component) +{ + struct ntp8835_priv *ntp8835 = snd_soc_component_get_drvdata(component); + int ret; + + ntp8835_reset_gpio(ntp8835); + ret = clk_prepare_enable(ntp8835->mclk); + if (ret) + return ret; + + regmap_multi_reg_write_bypassed(component->regmap, + ntp8835_sound_on, + ARRAY_SIZE(ntp8835_sound_on)); + + ret = ntp8835_load_firmware(ntp8835); + if (ret) { + dev_err(&ntp8835->i2c->dev, "Failed to load firmware\n"); + return ret; + } + + regcache_cache_only(component->regmap, false); + snd_soc_component_cache_sync(component); + + return 0; +} + +static int ntp8835_probe(struct snd_soc_component *component) +{ + int ret; + struct ntp8835_priv *ntp8835 = snd_soc_component_get_drvdata(component); + struct device *dev = component->dev; + + ret = snd_soc_add_component_controls(component, ntp8835_vol_control, + ARRAY_SIZE(ntp8835_vol_control)); + if (ret) + return dev_err_probe(dev, ret, "Failed to add controls\n"); + + ret = ntp8835_load_firmware(ntp8835); + if (ret) + return dev_err_probe(dev, ret, "Failed to load firmware\n"); + + return 0; +} + +static const struct snd_soc_dapm_widget ntp8835_dapm_widgets[] = { + SND_SOC_DAPM_DAC("AIFIN", "Playback", SND_SOC_NOPM, 0, 0), + + SND_SOC_DAPM_OUTPUT("OUT1"), + SND_SOC_DAPM_OUTPUT("OUT2"), + SND_SOC_DAPM_OUTPUT("OUT3"), +}; + +static const struct snd_soc_dapm_route ntp8835_dapm_routes[] = { + { "OUT1", NULL, "AIFIN" }, + { "OUT2", NULL, "AIFIN" }, + { "OUT3", NULL, "AIFIN" }, +}; + +static int ntp8835_set_component_sysclk(struct snd_soc_component *component, + int clk_id, int source, + unsigned int freq, int dir) +{ + struct ntp8835_priv *ntp8835 = snd_soc_component_get_drvdata(component); + + switch (freq) { + case 12288000: + case 24576000: + case 18432000: + ntp8835->mclk_rate = freq; + break; + default: + ntp8835->mclk_rate = 0; + dev_err(component->dev, "Unsupported MCLK value: %u", freq); + return -EINVAL; + }; + + return 0; +} + +static const struct snd_soc_component_driver soc_component_ntp8835 = { + .probe = ntp8835_probe, + .suspend = ntp8835_snd_suspend, + .resume = ntp8835_snd_resume, + .dapm_widgets = ntp8835_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(ntp8835_dapm_widgets), + .dapm_routes = ntp8835_dapm_routes, + .num_dapm_routes = ARRAY_SIZE(ntp8835_dapm_routes), + .set_sysclk = ntp8835_set_component_sysclk, +}; + +static int ntp8835_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params, + struct snd_soc_dai *dai) +{ + struct snd_soc_component *component = dai->component; + struct ntp8835_priv *ntp8835 = snd_soc_component_get_drvdata(component); + unsigned int input_fmt = 0; + unsigned int gsa_fmt = 0; + unsigned int gsa_fmt_mask; + unsigned int mcf; + int ret; + + switch (ntp8835->mclk_rate) { + case 12288000: + mcf = 0; + break; + case 24576000: + mcf = 1; + break; + case 18432000: + mcf = 2; + break; + default: + return -EINVAL; + } + + ret = snd_soc_component_update_bits(component, NTP8835_MCLK_FREQ_CTRL, + NTP8835_MCLK_FREQ_MCF, mcf); + if (ret) + return ret; + + switch (ntp8835->format) { + case SND_SOC_DAIFMT_I2S: + break; + case SND_SOC_DAIFMT_RIGHT_J: + input_fmt |= NTP8835_INPUT_FMT_GSA_MODE; + gsa_fmt |= NTP8835_GSA_RIGHT_J; + break; + case SND_SOC_DAIFMT_LEFT_J: + input_fmt |= NTP8835_INPUT_FMT_GSA_MODE; + break; + } + + ret = snd_soc_component_update_bits(component, NTP8835_INPUT_FMT, + NTP8835_INPUT_FMT_MASTER_MODE | + NTP8835_INPUT_FMT_GSA_MODE, + input_fmt); + + if (!(input_fmt & NTP8835_INPUT_FMT_GSA_MODE) || ret < 0) + return ret; + + switch (params_width(params)) { + case 24: + gsa_fmt |= NTP8835_GSA_BS(0); + break; + case 20: + gsa_fmt |= NTP8835_GSA_BS(1); + break; + case 18: + gsa_fmt |= NTP8835_GSA_BS(2); + break; + case 16: + gsa_fmt |= NTP8835_GSA_BS(3); + break; + default: + return -EINVAL; + } + + gsa_fmt_mask = NTP8835_GSA_BS_MASK | + NTP8835_GSA_RIGHT_J | + NTP8835_GSA_LSB; + return snd_soc_component_update_bits(component, NTP8835_GSA_FMT, + gsa_fmt_mask, gsa_fmt); +} + +static int ntp8835_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) +{ + struct snd_soc_component *component = dai->component; + struct ntp8835_priv *ntp8835 = snd_soc_component_get_drvdata(component); + + switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { + case SND_SOC_DAIFMT_I2S: + case SND_SOC_DAIFMT_RIGHT_J: + case SND_SOC_DAIFMT_LEFT_J: + ntp8835->format = fmt & SND_SOC_DAIFMT_FORMAT_MASK; + break; + default: + return -EINVAL; + } + return 0; +}; + +static const struct snd_soc_dai_ops ntp8835_dai_ops = { + .hw_params = ntp8835_hw_params, + .set_fmt = ntp8835_set_fmt, +}; + +static struct snd_soc_dai_driver ntp8835_dai = { + .name = "ntp8835-amplifier", + .playback = { + .stream_name = "Playback", + .channels_min = 1, + .channels_max = 3, + .rates = SNDRV_PCM_RATE_8000_192000, + .formats = NTP8835_FORMATS, + }, + .ops = &ntp8835_dai_ops, +}; + +static const struct regmap_config ntp8835_regmap = { + .reg_bits = 8, + .val_bits = 8, + .max_register = REG_MAX, + .cache_type = REGCACHE_MAPLE, +}; + +static int ntp8835_i2c_probe(struct i2c_client *i2c) +{ + struct ntp8835_priv *ntp8835; + struct regmap *regmap; + int ret; + + ntp8835 = devm_kzalloc(&i2c->dev, sizeof(*ntp8835), GFP_KERNEL); + if (!ntp8835) + return -ENOMEM; + + ntp8835->i2c = i2c; + + ntp8835->reset = devm_reset_control_get_shared(&i2c->dev, NULL); + if (IS_ERR(ntp8835->reset)) + return dev_err_probe(&i2c->dev, PTR_ERR(ntp8835->reset), + "Failed to get reset\n"); + + ret = reset_control_deassert(ntp8835->reset); + if (ret) + return dev_err_probe(&i2c->dev, PTR_ERR(ntp8835->reset), + "Failed to deassert reset\n"); + + dev_set_drvdata(&i2c->dev, ntp8835); + + ntp8835_reset_gpio(ntp8835); + + regmap = devm_regmap_init_i2c(i2c, &ntp8835_regmap); + if (IS_ERR(regmap)) + return dev_err_probe(&i2c->dev, PTR_ERR(regmap), + "Failed to allocate regmap\n"); + + ret = devm_snd_soc_register_component(&i2c->dev, &soc_component_ntp8835, + &ntp8835_dai, 1); + if (ret) + return dev_err_probe(&i2c->dev, ret, + "Failed to register component\n"); + + ntp8835->mclk = devm_clk_get_enabled(&i2c->dev, "mclk"); + if (IS_ERR(ntp8835->mclk)) + return dev_err_probe(&i2c->dev, PTR_ERR(ntp8835->mclk), "failed to get mclk\n"); + + return 0; +} + +static const struct i2c_device_id ntp8835_i2c_id[] = { + { "ntp8835", 0 }, + {} +}; +MODULE_DEVICE_TABLE(i2c, ntp8835_i2c_id); + +static const struct of_device_id ntp8835_of_match[] = { + {.compatible = "neofidelity,ntp8835",}, + {} +}; +MODULE_DEVICE_TABLE(of, ntp8835_of_match); + +static struct i2c_driver ntp8835_i2c_driver = { + .probe = ntp8835_i2c_probe, + .id_table = ntp8835_i2c_id, + .driver = { + .name = "ntp8835", + .of_match_table = ntp8835_of_match, + }, +}; +module_i2c_driver(ntp8835_i2c_driver); + +MODULE_AUTHOR("Igor Prusov "); +MODULE_DESCRIPTION("NTP8835 Audio Amplifier Driver"); +MODULE_LICENSE("GPL");