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"^nec,.*": description: NEC LCD Technologies, Ltd. + "^neofidelity,.*": + description: Neofidelity Inc. "^neonode,.*": description: Neonode Inc. "^netgear,.*": --=20 2.34.1 From nobody Fri Nov 29 00:42:24 2024 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 421C118452A; 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=1727276032; cv=none; b=uHycZw9pRooYN3RJt8RA5Sm/gP8ulZyUvvPjJXIN3T5WQXKqyaK234CkkOGCPMVx8iEEziXbdfFYqAAzNqm9h/IDpSE/9+in8D5xEMS0/SeA5SBJVFtl5mZDOrBEsZxpZktADhlbPQoN73tCy+l6hy9BNnnjKV8tEdpjxAVq5iQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727276032; c=relaxed/simple; bh=YCxbvf9bw6nRPMBwyErlOhpsvMANSV5kJ4bsWL6G7bo=; h=From:Date:Subject:MIME-Version:Content-Type:Message-ID:References: In-Reply-To:To:CC; b=dGCVpaOOLc6pqOzaDbDbJze+2Vo7W+xFiYvSdZHGlENogStRm+taN9qHxyl6myZiwZI4PrwVwd1srBI3l2FQ5PZdaxIH4SsMfVMMZjxaWiWtLrsDah+alOYMfmRzqripV61z58cSJv/5H0oHB4EBiWV+yeh0Z7su/siyrys7/9k= 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=u8z3Lczp; 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="u8z3Lczp" Received: from p-infra-ksmg-sc-msk02.sberdevices.ru (localhost [127.0.0.1]) by mx1.sberdevices.ru (Postfix) with ESMTP id 0154A120020; Wed, 25 Sep 2024 17:53:40 +0300 (MSK) DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.sberdevices.ru 0154A120020 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=salutedevices.com; s=mail; t=1727276020; bh=A10nef/Yh35uk4C2ZtKkxyn7HwyXdHBzhjd8HkQj9a0=; h=From:Date:Subject:MIME-Version:Content-Type:Message-ID:To:From; b=u8z3LczpqGU1T1Wj4W5Ky4tFtufC9Oewuwf5k+UPqNNCix9LcdBBbM4Yo6EpQ1xTI huPqwRSiDBS0I3k+aXG1YXC/5Q4hO2eBYbXhxdUl5D+e3sQR+jRMK+1zCWMexRMbTu 1ChAT7fvS4/kwVEBT2dp8iEc9x4kCKnAmNrBGgAgDklXyv7+Gv8UdQ5vNUJDQJ68Oz lGA7kaXm930yRYUrGuBWPUu0g6W5RSiKftQtzC0REqGmei8eT5F/Cti29eANffhq1h i7wXslOnoZ+295WTy9d49xdSF9holpP/oySzXdMj/6ZU5B2zv4XHMRZENCby33S2zL juOXxM6kgwIyA== 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 17:53:39 +0300 (MSK) From: Igor Prusov Date: Wed, 25 Sep 2024 17:52:40 +0300 Subject: [PATCH v3 2/6] ASoC: codecs: Add NeoFidelity Firmware helpers 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: <20240925-ntp-amps-8918-8835-v3-2-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_from_domain_doesnt_match_to}, 127.0.0.199:7.1.2;d41d8cd98f00b204e9800998ecf8427e.com:7.1.1;salutedevices.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 X-KSMG-LinksScanning: Clean 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 Add support for loading firmware for NeoFidelity amplifiers. Signed-off-by: Igor Prusov --- sound/soc/codecs/Kconfig | 3 + sound/soc/codecs/Makefile | 2 + sound/soc/codecs/ntpfw.c | 137 ++++++++++++++++++++++++++++++++++++++++++= ++++ sound/soc/codecs/ntpfw.h | 23 ++++++++ 4 files changed, 165 insertions(+) diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig index 7092842480ef17d705920a6ac62a85158119352e..a911a81caf8b3941dc4a3117290= 739cb6ac802d3 100644 --- a/sound/soc/codecs/Kconfig +++ b/sound/soc/codecs/Kconfig @@ -2565,6 +2565,9 @@ config SND_SOC_NAU8825 tristate depends on I2C =20 +config SND_SOC_NTPFW + tristate + 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 54cbc3feae3277ae29d6ea8fe891d4d17e5c9b17..12f97fc8a9e7c410b0e8859f34b= 303caa677fcd2 100644 --- a/sound/soc/codecs/Makefile +++ b/sound/soc/codecs/Makefile @@ -189,6 +189,7 @@ snd-soc-nau8821-y :=3D nau8821.o snd-soc-nau8822-y :=3D nau8822.o snd-soc-nau8824-y :=3D nau8824.o snd-soc-nau8825-y :=3D nau8825.o +snd-soc-ntpfw-y :=3D ntpfw.o snd-soc-hdmi-codec-y :=3D hdmi-codec.o snd-soc-pcm1681-y :=3D pcm1681.o snd-soc-pcm1789-codec-y :=3D pcm1789.o @@ -591,6 +592,7 @@ obj-$(CONFIG_SND_SOC_NAU8821) +=3D snd-soc-nau8821.o obj-$(CONFIG_SND_SOC_NAU8822) +=3D snd-soc-nau8822.o obj-$(CONFIG_SND_SOC_NAU8824) +=3D snd-soc-nau8824.o obj-$(CONFIG_SND_SOC_NAU8825) +=3D snd-soc-nau8825.o +obj-$(CONFIG_SND_SOC_NTPFW) +=3D snd-soc-ntpfw.o obj-$(CONFIG_SND_SOC_HDMI_CODEC) +=3D snd-soc-hdmi-codec.o obj-$(CONFIG_SND_SOC_PCM1681) +=3D snd-soc-pcm1681.o obj-$(CONFIG_SND_SOC_PCM179X) +=3D snd-soc-pcm179x-codec.o diff --git a/sound/soc/codecs/ntpfw.c b/sound/soc/codecs/ntpfw.c new file mode 100644 index 0000000000000000000000000000000000000000..5ced2e966ab7d284c48a99f7ba9= 690d21b838c67 --- /dev/null +++ b/sound/soc/codecs/ntpfw.c @@ -0,0 +1,137 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * ntpfw.c - Firmware helper functions for Neofidelity codecs + * + * Copyright (c) 2024, SaluteDevices. All Rights Reserved. + */ + +#include +#include +#include + +#include "ntpfw.h" + +struct ntpfw_chunk { + __be16 length; + u8 step; + u8 data[]; +} __packed; + +struct ntpfw_header { + __be32 magic; +} __packed; + +static bool ntpfw_verify(struct device *dev, const u8 *buf, size_t buf_siz= e, u32 magic) +{ + const struct ntpfw_header *header =3D (struct ntpfw_header *)buf; + u32 buf_magic; + + if (buf_size <=3D sizeof(*header)) { + dev_err(dev, "Failed to load firmware: image too small\n"); + return false; + } + + buf_magic =3D be32_to_cpu(header->magic); + if (buf_magic !=3D magic) { + dev_err(dev, "Failed to load firmware: invalid magic 0x%x:\n", buf_magic= ); + return false; + } + + return true; +} + +static bool ntpfw_verify_chunk(struct device *dev, const struct ntpfw_chun= k *chunk, size_t buf_size) +{ + size_t chunk_size; + + if (buf_size <=3D sizeof(*chunk)) { + dev_err(dev, "Failed to load firmware: chunk size too big\n"); + return false; + } + + if (chunk->step !=3D 2 && chunk->step !=3D 5) { + dev_err(dev, "Failed to load firmware: invalid chunk step: %d\n", chunk-= >step); + return false; + } + + chunk_size =3D be16_to_cpu(chunk->length); + if (chunk_size > buf_size) { + dev_err(dev, "Failed to load firmware: invalid chunk length\n"); + return false; + } + + if (chunk_size % chunk->step) { + dev_err(dev, "Failed to load firmware: chunk length and step mismatch\n"= ); + return false; + } + + return true; +} + +static int ntpfw_send_chunk(struct i2c_client *i2c, const struct ntpfw_chu= nk *chunk) +{ + int ret; + size_t i; + size_t length =3D be16_to_cpu(chunk->length); + + for (i =3D 0; i < length; i +=3D chunk->step) { + ret =3D i2c_master_send(i2c, &chunk->data[i], chunk->step); + if (ret !=3D chunk->step) { + dev_err(&i2c->dev, "I2C send failed: %d\n", ret); + return ret < 0 ? ret : -EIO; + } + } + + return 0; +} + +int ntpfw_load(struct i2c_client *i2c, const char *name, u32 magic) +{ + struct device *dev =3D &i2c->dev; + const struct ntpfw_chunk *chunk; + const struct firmware *fw; + const u8 *data; + size_t leftover; + int ret; + + ret =3D request_firmware(&fw, name, dev); + if (ret) { + dev_warn(dev, "request_firmware '%s' failed with %d\n", + name, ret); + return ret; + } + + if (!ntpfw_verify(dev, fw->data, fw->size, magic)) { + ret =3D -EINVAL; + goto done; + } + + data =3D fw->data + sizeof(struct ntpfw_header); + leftover =3D fw->size - sizeof(struct ntpfw_header); + + while (leftover) { + chunk =3D (struct ntpfw_chunk *)data; + + if (!ntpfw_verify_chunk(dev, chunk, leftover)) { + ret =3D -EINVAL; + goto done; + } + + ret =3D ntpfw_send_chunk(i2c, chunk); + if (ret) + goto done; + + data +=3D be16_to_cpu(chunk->length) + sizeof(*chunk); + leftover -=3D be16_to_cpu(chunk->length) + sizeof(*chunk); + } + +done: + release_firmware(fw); + + return ret; +} +EXPORT_SYMBOL_GPL(ntpfw_load); + +MODULE_AUTHOR("Igor Prusov "); +MODULE_DESCRIPTION("Helper for loading Neofidelity amplifiers firmware"); +MODULE_LICENSE("GPL"); diff --git a/sound/soc/codecs/ntpfw.h b/sound/soc/codecs/ntpfw.h new file mode 100644 index 0000000000000000000000000000000000000000..1cf10d5480ee7f55d093e578407= de252f866f424 --- /dev/null +++ b/sound/soc/codecs/ntpfw.h @@ -0,0 +1,23 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/** + * ntpfw.h - Firmware helper functions for Neofidelity codecs + * + * Copyright (c) 2024, SaluteDevices. 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Datasheet: https://datasheetspdf.com/pdf-down/N/T/P/NTP8918-NeoFidelity.pdf Signed-off-by: Igor Prusov --- sound/soc/codecs/Kconfig | 5 + sound/soc/codecs/Makefile | 2 + sound/soc/codecs/ntp8918.c | 397 +++++++++++++++++++++++++++++++++++++++++= ++++ 3 files changed, 404 insertions(+) diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig index a911a81caf8b3941dc4a3117290739cb6ac802d3..03eb9512d2239782faf1ed3a331= 5e94c9e583c53 100644 --- a/sound/soc/codecs/Kconfig +++ b/sound/soc/codecs/Kconfig @@ -2568,6 +2568,11 @@ config SND_SOC_NAU8825 config SND_SOC_NTPFW tristate =20 +config SND_SOC_NTP8918 + select SND_SOC_NTPFW + tristate "NeoFidelity NTP8918 amplifier" + 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 12f97fc8a9e7c410b0e8859f34b303caa677fcd2..9e72c28d193b21a0b0ac4fb3dfb= aea5e4252a66c 100644 --- a/sound/soc/codecs/Makefile +++ b/sound/soc/codecs/Makefile @@ -189,6 +189,7 @@ snd-soc-nau8821-y :=3D nau8821.o snd-soc-nau8822-y :=3D nau8822.o snd-soc-nau8824-y :=3D nau8824.o snd-soc-nau8825-y :=3D nau8825.o +snd-soc-ntp8918-y :=3D ntp8918.o snd-soc-ntpfw-y :=3D ntpfw.o snd-soc-hdmi-codec-y :=3D hdmi-codec.o snd-soc-pcm1681-y :=3D pcm1681.o @@ -592,6 +593,7 @@ obj-$(CONFIG_SND_SOC_NAU8821) +=3D snd-soc-nau8821.o obj-$(CONFIG_SND_SOC_NAU8822) +=3D snd-soc-nau8822.o obj-$(CONFIG_SND_SOC_NAU8824) +=3D snd-soc-nau8824.o obj-$(CONFIG_SND_SOC_NAU8825) +=3D snd-soc-nau8825.o +obj-$(CONFIG_SND_SOC_NTP8918) +=3D snd-soc-ntp8918.o obj-$(CONFIG_SND_SOC_NTPFW) +=3D snd-soc-ntpfw.o obj-$(CONFIG_SND_SOC_HDMI_CODEC) +=3D snd-soc-hdmi-codec.o obj-$(CONFIG_SND_SOC_PCM1681) +=3D snd-soc-pcm1681.o diff --git a/sound/soc/codecs/ntp8918.c b/sound/soc/codecs/ntp8918.c new file mode 100644 index 0000000000000000000000000000000000000000..0493ab6acbe4ecab23cf062333b= 42a95a6462562 --- /dev/null +++ b/sound/soc/codecs/ntp8918.c @@ -0,0 +1,397 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Driver for the NTP8918 Audio Amplifier + * + * 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 NTP8918_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \ + SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000) + +#define NTP8918_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \ + SNDRV_PCM_FMTBIT_S20_3LE | \ + SNDRV_PCM_FMTBIT_S24_LE | \ + SNDRV_PCM_FMTBIT_S32_LE) + +#define NTP8918_INPUT_FMT 0x0 +#define NTP8918_INPUT_FMT_MASTER_MODE BIT(0) +#define NTP8918_INPUT_FMT_GSA_MODE BIT(1) +#define NTP8918_GSA_FMT 0x1 +#define NTP8918_GSA_BS_MASK GENMASK(3, 2) +#define NTP8918_GSA_BS(x) ((x) << 2) +#define NTP8918_GSA_RIGHT_J BIT(0) +#define NTP8918_GSA_LSB BIT(1) +#define NTP8918_MCLK_FREQ_CTRL 0x2 +#define NTP8918_MCLK_FREQ_MCF GENMASK(1, 0) +#define NTP8918_MASTER_VOL 0x0C +#define NTP8918_CHNL_A_VOL 0x17 +#define NTP8918_CHNL_B_VOL 0x18 +#define NTP8918_SOFT_MUTE 0x33 +#define NTP8918_SOFT_MUTE_SM1 BIT(0) +#define NTP8918_SOFT_MUTE_SM2 BIT(1) +#define NTP8918_PWM_SWITCH 0x34 +#define NTP8918_PWM_MASK_CTRL0 0x35 +#define REG_MAX NTP8918_PWM_MASK_CTRL0 + +#define NTP8918_FW_NAME "eq_8918.bin" +#define NTP8918_FW_MAGIC 0x38393138 /* "8918" */ + +struct ntp8918_priv { + struct i2c_client *i2c; + struct clk *bck; + struct reset_control *reset; + unsigned int format; +}; + +static const DECLARE_TLV_DB_SCALE(ntp8918_master_vol_scale, -12550, 50, 0); + +static const struct snd_kcontrol_new ntp8918_vol_control[] =3D { + SOC_SINGLE_RANGE_TLV("Playback Volume", NTP8918_MASTER_VOL, 0, + 0x04, 0xff, 0, ntp8918_master_vol_scale), + SOC_SINGLE("Playback Switch", NTP8918_PWM_MASK_CTRL0, 1, 1, 1), +}; + +static void ntp8918_reset_gpio(struct ntp8918_priv *ntp8918) +{ + /* + * Proper initialization sequence for NTP8918 amplifier requires driving + * /RESET signal low during power up for at least 0.1us. The sequence is, + * according to NTP8918 datasheet, 6.2 Timing Sequence 1: + * Deassert for T2 >=3D 1ms... + */ + reset_control_deassert(ntp8918->reset); + fsleep(1000); + + /* ...Assert for T3 >=3D 0.1us... */ + reset_control_assert(ntp8918->reset); + fsleep(1); + + /* ...Deassert, and wait for T4 >=3D 0.5ms before sound on sequence. */ + reset_control_deassert(ntp8918->reset); + fsleep(500); +} + +static const struct reg_sequence ntp8918_sound_off[] =3D { + { NTP8918_MASTER_VOL, 0 }, +}; + +static const struct reg_sequence ntp8918_sound_on[] =3D { + { NTP8918_MASTER_VOL, 0b11 }, +}; + +static int ntp8918_load_firmware(struct ntp8918_priv *ntp8918) +{ + int ret; + + ret =3D ntpfw_load(ntp8918->i2c, NTP8918_FW_NAME, NTP8918_FW_MAGIC); + if (ret =3D=3D -ENOENT) { + dev_warn_once(&ntp8918->i2c->dev, "Could not find firmware %s\n", + NTP8918_FW_NAME); + return 0; + } + + return ret; +} + +static int ntp8918_snd_suspend(struct snd_soc_component *component) +{ + struct ntp8918_priv *ntp8918 =3D snd_soc_component_get_drvdata(component); + + regcache_cache_only(component->regmap, true); + + regmap_multi_reg_write_bypassed(component->regmap, + ntp8918_sound_off, + ARRAY_SIZE(ntp8918_sound_off)); + + /* + * According to NTP8918 datasheet, 6.2 Timing Sequence 1: + * wait after sound off for T6 >=3D 0.5ms + */ + fsleep(500); + reset_control_assert(ntp8918->reset); + + regcache_mark_dirty(component->regmap); + clk_disable_unprepare(ntp8918->bck); + + return 0; +} + +static int ntp8918_snd_resume(struct snd_soc_component *component) +{ + struct ntp8918_priv *ntp8918 =3D snd_soc_component_get_drvdata(component); + int ret; + + ret =3D clk_prepare_enable(ntp8918->bck); + if (ret) + return ret; + + ntp8918_reset_gpio(ntp8918); + + regmap_multi_reg_write_bypassed(component->regmap, + ntp8918_sound_on, + ARRAY_SIZE(ntp8918_sound_on)); + + ret =3D ntp8918_load_firmware(ntp8918); + if (ret) { + dev_err(&ntp8918->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 ntp8918_probe(struct snd_soc_component *component) +{ + int ret; + struct ntp8918_priv *ntp8918 =3D snd_soc_component_get_drvdata(component); + struct device *dev =3D component->dev; + + ret =3D snd_soc_add_component_controls(component, ntp8918_vol_control, + ARRAY_SIZE(ntp8918_vol_control)); + if (ret) + return dev_err_probe(dev, ret, "Failed to add controls\n"); + + ret =3D ntp8918_load_firmware(ntp8918); + if (ret) + return dev_err_probe(dev, ret, "Failed to load firmware\n"); + + return 0; +} + +static const struct snd_soc_dapm_widget ntp8918_dapm_widgets[] =3D { + SND_SOC_DAPM_DAC("AIFIN", "Playback", SND_SOC_NOPM, 0, 0), + + SND_SOC_DAPM_OUTPUT("OUT1"), + SND_SOC_DAPM_OUTPUT("OUT2"), +}; + +static const struct snd_soc_dapm_route ntp8918_dapm_routes[] =3D { + { "OUT1", NULL, "AIFIN" }, + { "OUT2", NULL, "AIFIN" }, +}; + +static const struct snd_soc_component_driver soc_component_ntp8918 =3D { + .probe =3D ntp8918_probe, + .suspend =3D ntp8918_snd_suspend, + .resume =3D ntp8918_snd_resume, + .dapm_widgets =3D ntp8918_dapm_widgets, + .num_dapm_widgets =3D ARRAY_SIZE(ntp8918_dapm_widgets), + .dapm_routes =3D ntp8918_dapm_routes, + .num_dapm_routes =3D ARRAY_SIZE(ntp8918_dapm_routes), +}; + +static int ntp8918_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 ntp8918_priv *ntp8918 =3D snd_soc_component_get_drvdata(component); + unsigned int input_fmt =3D 0; + unsigned int gsa_fmt =3D 0; + unsigned int gsa_fmt_mask; + unsigned int mcf; + int bclk; + int ret; + + bclk =3D snd_soc_params_to_bclk(params); + switch (bclk) { + case 3072000: + case 2822400: + mcf =3D 0; + break; + case 6144000: + mcf =3D 1; + break; + case 2048000: + mcf =3D 2; + break; + default: + return -EINVAL; + } + + ret =3D snd_soc_component_update_bits(component, NTP8918_MCLK_FREQ_CTRL, + NTP8918_MCLK_FREQ_MCF, mcf); + if (ret) + return ret; + + switch (ntp8918->format) { + case SND_SOC_DAIFMT_I2S: + break; + case SND_SOC_DAIFMT_RIGHT_J: + input_fmt |=3D NTP8918_INPUT_FMT_GSA_MODE; + gsa_fmt |=3D NTP8918_GSA_RIGHT_J; + break; + case SND_SOC_DAIFMT_LEFT_J: + input_fmt |=3D NTP8918_INPUT_FMT_GSA_MODE; + break; + } + + ret =3D snd_soc_component_update_bits(component, NTP8918_INPUT_FMT, + NTP8918_INPUT_FMT_MASTER_MODE | + NTP8918_INPUT_FMT_GSA_MODE, + input_fmt); + + if (!(input_fmt & NTP8918_INPUT_FMT_GSA_MODE) || ret < 0) + return ret; + + switch (params_width(params)) { + case 24: + gsa_fmt |=3D NTP8918_GSA_BS(0); + break; + case 20: + gsa_fmt |=3D NTP8918_GSA_BS(1); + break; + case 18: + gsa_fmt |=3D NTP8918_GSA_BS(2); + break; + case 16: + gsa_fmt |=3D NTP8918_GSA_BS(3); + break; + default: + return -EINVAL; + } + + gsa_fmt_mask =3D NTP8918_GSA_BS_MASK | + NTP8918_GSA_RIGHT_J | + NTP8918_GSA_LSB; + return snd_soc_component_update_bits(component, NTP8918_GSA_FMT, + gsa_fmt_mask, gsa_fmt); +} + +static int ntp8918_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) +{ + struct snd_soc_component *component =3D dai->component; + struct ntp8918_priv *ntp8918 =3D 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: + ntp8918->format =3D fmt & SND_SOC_DAIFMT_FORMAT_MASK; + break; + default: + return -EINVAL; + } + return 0; +} + +static int ntp8918_digital_mute(struct snd_soc_dai *dai, int mute, int str= eam) +{ + unsigned int mute_mask =3D NTP8918_SOFT_MUTE_SM1 | + NTP8918_SOFT_MUTE_SM2; + + return snd_soc_component_update_bits(dai->component, NTP8918_SOFT_MUTE, + mute_mask, mute ? mute_mask : 0); +} + +static const struct snd_soc_dai_ops ntp8918_dai_ops =3D { + .hw_params =3D ntp8918_hw_params, + .set_fmt =3D ntp8918_set_fmt, + .mute_stream =3D ntp8918_digital_mute, +}; + +static struct snd_soc_dai_driver ntp8918_dai =3D { + .name =3D "ntp8918-amplifier", + .playback =3D { + .stream_name =3D "Playback", + .channels_min =3D 1, + .channels_max =3D 2, + .rates =3D NTP8918_RATES, + .formats =3D NTP8918_FORMATS, + }, + .ops =3D &ntp8918_dai_ops, +}; + +static const struct regmap_config ntp8918_regmap =3D { + .reg_bits =3D 8, + .val_bits =3D 8, + .max_register =3D REG_MAX, + .cache_type =3D REGCACHE_MAPLE, +}; + +static int ntp8918_i2c_probe(struct i2c_client *i2c) +{ + struct ntp8918_priv *ntp8918; + int ret; + struct regmap *regmap; + + ntp8918 =3D devm_kzalloc(&i2c->dev, sizeof(*ntp8918), GFP_KERNEL); + if (!ntp8918) + return -ENOMEM; + + ntp8918->i2c =3D i2c; + + ntp8918->reset =3D devm_reset_control_get_shared(&i2c->dev, NULL); + if (IS_ERR(ntp8918->reset)) + return dev_err_probe(&i2c->dev, PTR_ERR(ntp8918->reset), "Failed to get = reset\n"); + + dev_set_drvdata(&i2c->dev, ntp8918); + + ntp8918_reset_gpio(ntp8918); + + regmap =3D devm_regmap_init_i2c(i2c, &ntp8918_regmap); + if (IS_ERR(regmap)) + return dev_err_probe(&i2c->dev, PTR_ERR(regmap), + "Failed to allocate regmap\n"); + + ret =3D devm_snd_soc_register_component(&i2c->dev, &soc_component_ntp8918, + &ntp8918_dai, 1); + if (ret) + return dev_err_probe(&i2c->dev, ret, + "Failed to register component\n"); + + ntp8918->bck =3D devm_clk_get_enabled(&i2c->dev, "bck"); + if (IS_ERR(ntp8918->bck)) + return dev_err_probe(&i2c->dev, PTR_ERR(ntp8918->bck), "failed to get bc= k clock\n"); + + return 0; +} + +static const struct i2c_device_id ntp8918_i2c_id[] =3D { + { "ntp8918", 0 }, + {} +}; +MODULE_DEVICE_TABLE(i2c, ntp8918_i2c_id); + +static const struct of_device_id ntp8918_of_match[] =3D { + {.compatible =3D "neofidelity,ntp8918"}, + {} +}; +MODULE_DEVICE_TABLE(of, ntp8918_of_match); + +static struct i2c_driver ntp8918_i2c_driver =3D { + .probe =3D ntp8918_i2c_probe, + .id_table =3D ntp8918_i2c_id, + .driver =3D { + .name =3D "ntp8918", + .of_match_table =3D ntp8918_of_match, + }, +}; +module_i2c_driver(ntp8918_i2c_driver); + +MODULE_AUTHOR("Igor Prusov "); +MODULE_DESCRIPTION("NTP8918 Audio Amplifier Driver"); +MODULE_LICENSE("GPL"); --=20 2.34.1 From nobody Fri Nov 29 00:42:24 2024 Received: from mx1.sberdevices.ru (mx1.sberdevices.ru [37.18.73.165]) (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 38A86183CAF; Wed, 25 Sep 2024 14:53:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=37.18.73.165 ARC-Seal: i=1; a=rsa-sha256; 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Wed, 25 Sep 2024 17:53:40 +0300 (MSK) From: Igor Prusov Date: Wed, 25 Sep 2024 17:52:43 +0300 Subject: [PATCH v3 5/6] ASoC: dt-bindings: Add NeoFidelity NTP8835 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: <20240925-ntp-amps-8918-8835-v3-5-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}, d41d8cd98f00b204e9800998ecf8427e.com:7.1.1;salutedevices.com:7.1.1;devicetree.org:7.1.1;smtp.sberdevices.ru:7.1.1,5.0.1;127.0.0.199:7.1.2, 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 Add dt-bindings for NeoFidelity NTP8835C/NTP8835C Amplifiers Signed-off-by: Igor Prusov Reviewed-by: Rob Herring (Arm) --- .../bindings/sound/neofidelity,ntp8835.yaml | 73 ++++++++++++++++++= ++++ 1 file changed, 73 insertions(+) diff --git a/Documentation/devicetree/bindings/sound/neofidelity,ntp8835.ya= ml b/Documentation/devicetree/bindings/sound/neofidelity,ntp8835.yaml new file mode 100644 index 0000000000000000000000000000000000000000..44d72a2ddfc9abc29039106c4a1= baed8a5f6e5d8 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/neofidelity,ntp8835.yaml @@ -0,0 +1,73 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/sound/neofidelity,ntp8835.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: NeoFidelity NTP8835/NTP8835C Amplifiers + +maintainers: + - Igor Prusov + +description: | + The NTP8835 is a single chip full digital audio amplifier + including power stages for stereo amplifier systems. + NTP8835 is integrated with versatile digital audio signal + processing functions, high-performance, high-fidelity fully + digital PWM modulator and two high-power full-bridge MOSFET + power stages. NTP8835C has identical programming interface, + but has different output signal characteristics. + +allOf: + - $ref: dai-common.yaml# + +properties: + compatible: + enum: + - neofidelity,ntp8835 + - neofidelity,ntp8835c + + reg: + enum: + - 0x2a + - 0x2b + - 0x2c + - 0x2d + + reset-gpios: + maxItems: 1 + + '#sound-dai-cells': + const: 0 + + clocks: + maxItems: 4 + + clock-names: + items: + - const: wck + - const: bck + - const: scl + - const: mclk + +required: + - compatible + - reg + +unevaluatedProperties: false + +examples: + - | + #include + i2c { + #address-cells =3D <1>; + #size-cells =3D <0>; + audio-codec@2b { + compatible =3D "neofidelity,ntp8835"; + #sound-dai-cells =3D <0>; + reg =3D <0x2b>; + reset-gpios =3D <&gpio 5 GPIO_ACTIVE_LOW>; + clocks =3D <&clkc 551>, <&clkc 552>, <&clkc 553>, <&clkc 554>; + clock-names =3D "wck", "bck", "scl", "mclk"; + }; + }; --=20 2.34.1 From nobody Fri Nov 29 00:42:24 2024 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; 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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-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: <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..c6c4c7481b4ca4938bdcabb1e22= 514ddd2bc5ca4 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 =20 +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..850c6249e3dfedb3d59897b57c6= a731b6fbf517e 100644 --- a/sound/soc/codecs/Makefile +++ b/sound/soc/codecs/Makefile @@ -189,6 +189,7 @@ snd-soc-nau8821-y :=3D nau8821.o snd-soc-nau8822-y :=3D nau8822.o snd-soc-nau8824-y :=3D nau8824.o snd-soc-nau8825-y :=3D nau8825.o +snd-soc-ntp8835-y :=3D ntp8835.o snd-soc-ntp8918-y :=3D ntp8918.o snd-soc-ntpfw-y :=3D ntpfw.o snd-soc-hdmi-codec-y :=3D hdmi-codec.o @@ -593,6 +594,7 @@ obj-$(CONFIG_SND_SOC_NAU8821) +=3D snd-soc-nau8821.o obj-$(CONFIG_SND_SOC_NAU8822) +=3D snd-soc-nau8822.o obj-$(CONFIG_SND_SOC_NAU8824) +=3D snd-soc-nau8824.o obj-$(CONFIG_SND_SOC_NAU8825) +=3D snd-soc-nau8825.o +obj-$(CONFIG_SND_SOC_NTP8835) +=3D snd-soc-ntp8835.o obj-$(CONFIG_SND_SOC_NTP8918) +=3D snd-soc-ntp8918.o obj-$(CONFIG_SND_SOC_NTPFW) +=3D snd-soc-ntpfw.o obj-$(CONFIG_SND_SOC_HDMI_CODEC) +=3D 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..97056d8de2bba334269b4bc0711= 6a174eef2a95c --- /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 =3D SNDRV_CTL_ELEM_TYPE_BOOLEAN; + uinfo->access =3D + (SNDRV_CTL_ELEM_ACCESS_TLV_READ | SNDRV_CTL_ELEM_ACCESS_READWRITE); + uinfo->count =3D 1; + + uinfo->value.integer.min =3D 0; + uinfo->value.integer.max =3D 1; + uinfo->value.integer.step =3D 1; + + return 0; +} + +static int ntp8835_mute_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_component *component =3D snd_soc_kcontrol_component(kcontr= ol); + unsigned int val; + + val =3D snd_soc_component_read(component, NTP8835_SOFT_MUTE); + + ucontrol->value.integer.value[0] =3D 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 =3D snd_soc_kcontrol_component(kcontr= ol); + unsigned int val; + + val =3D 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[] =3D { + SOC_SINGLE_TLV("Playback Volume", NTP8835_MASTER_VOL, 0, + 0xff, 0, ntp8835_vol_scale), + { + .iface =3D SNDRV_CTL_ELEM_IFACE_MIXER, + .name =3D "Playback Switch", + .info =3D ntp8835_mute_info, + .access =3D SNDRV_CTL_ELEM_ACCESS_TLV_READ | SNDRV_CTL_ELEM_ACCESS_READW= RITE, + .get =3D ntp8835_mute_get, + .put =3D 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 >=3D 1ms... + */ + reset_control_deassert(ntp8835->reset); + fsleep(1000); + + /* ...Assert for T3 >=3D 0.1us... */ + reset_control_assert(ntp8835->reset); + fsleep(1); + + /* ...Deassert, and wait for T4 >=3D 0.5ms before sound on sequence. */ + reset_control_deassert(ntp8835->reset); + fsleep(500); +} + +static const struct reg_sequence ntp8835_sound_on[] =3D { + { 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[] =3D { + { 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 =3D ntpfw_load(ntp8835->i2c, NTP8835_FW_NAME, NTP8835_FW_MAGIC); + if (ret =3D=3D -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 =3D 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 >=3D 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 =3D snd_soc_component_get_drvdata(component); + int ret; + + ntp8835_reset_gpio(ntp8835); + ret =3D 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 =3D 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 =3D snd_soc_component_get_drvdata(component); + struct device *dev =3D component->dev; + + ret =3D 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 =3D 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[] =3D { + 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[] =3D { + { "OUT1", NULL, "AIFIN" }, + { "OUT2", NULL, "AIFIN" }, + { "OUT3", NULL, "AIFIN" }, +}; + +static int ntp8835_set_component_sysclk(struct snd_soc_component *componen= t, + int clk_id, int source, + unsigned int freq, int dir) +{ + struct ntp8835_priv *ntp8835 =3D snd_soc_component_get_drvdata(component); + + switch (freq) { + case 12288000: + case 24576000: + case 18432000: + ntp8835->mclk_rate =3D freq; + break; + default: + ntp8835->mclk_rate =3D 0; + dev_err(component->dev, "Unsupported MCLK value: %u", freq); + return -EINVAL; + }; + + return 0; +} + +static const struct snd_soc_component_driver soc_component_ntp8835 =3D { + .probe =3D ntp8835_probe, + .suspend =3D ntp8835_snd_suspend, + .resume =3D ntp8835_snd_resume, + .dapm_widgets =3D ntp8835_dapm_widgets, + .num_dapm_widgets =3D ARRAY_SIZE(ntp8835_dapm_widgets), + .dapm_routes =3D ntp8835_dapm_routes, + .num_dapm_routes =3D ARRAY_SIZE(ntp8835_dapm_routes), + .set_sysclk =3D 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 =3D dai->component; + struct ntp8835_priv *ntp8835 =3D snd_soc_component_get_drvdata(component); + unsigned int input_fmt =3D 0; + unsigned int gsa_fmt =3D 0; + unsigned int gsa_fmt_mask; + unsigned int mcf; + int ret; + + switch (ntp8835->mclk_rate) { + case 12288000: + mcf =3D 0; + break; + case 24576000: + mcf =3D 1; + break; + case 18432000: + mcf =3D 2; + break; + default: + return -EINVAL; + } + + ret =3D 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 |=3D NTP8835_INPUT_FMT_GSA_MODE; + gsa_fmt |=3D NTP8835_GSA_RIGHT_J; + break; + case SND_SOC_DAIFMT_LEFT_J: + input_fmt |=3D NTP8835_INPUT_FMT_GSA_MODE; + break; + } + + ret =3D 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 |=3D NTP8835_GSA_BS(0); + break; + case 20: + gsa_fmt |=3D NTP8835_GSA_BS(1); + break; + case 18: + gsa_fmt |=3D NTP8835_GSA_BS(2); + break; + case 16: + gsa_fmt |=3D NTP8835_GSA_BS(3); + break; + default: + return -EINVAL; + } + + gsa_fmt_mask =3D 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 =3D dai->component; + struct ntp8835_priv *ntp8835 =3D 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 =3D fmt & SND_SOC_DAIFMT_FORMAT_MASK; + break; + default: + return -EINVAL; + } + return 0; +}; + +static const struct snd_soc_dai_ops ntp8835_dai_ops =3D { + .hw_params =3D ntp8835_hw_params, + .set_fmt =3D ntp8835_set_fmt, +}; + +static struct snd_soc_dai_driver ntp8835_dai =3D { + .name =3D "ntp8835-amplifier", + .playback =3D { + .stream_name =3D "Playback", + .channels_min =3D 1, + .channels_max =3D 3, + .rates =3D SNDRV_PCM_RATE_8000_192000, + .formats =3D NTP8835_FORMATS, + }, + .ops =3D &ntp8835_dai_ops, +}; + +static const struct regmap_config ntp8835_regmap =3D { + .reg_bits =3D 8, + .val_bits =3D 8, + .max_register =3D REG_MAX, + .cache_type =3D REGCACHE_MAPLE, +}; + +static int ntp8835_i2c_probe(struct i2c_client *i2c) +{ + struct ntp8835_priv *ntp8835; + struct regmap *regmap; + int ret; + + ntp8835 =3D devm_kzalloc(&i2c->dev, sizeof(*ntp8835), GFP_KERNEL); + if (!ntp8835) + return -ENOMEM; + + ntp8835->i2c =3D i2c; + + ntp8835->reset =3D 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 =3D 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 =3D 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 =3D 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 =3D 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 m= clk\n"); + + return 0; +} + +static const struct i2c_device_id ntp8835_i2c_id[] =3D { + { "ntp8835", 0 }, + {} +}; +MODULE_DEVICE_TABLE(i2c, ntp8835_i2c_id); + +static const struct of_device_id ntp8835_of_match[] =3D { + {.compatible =3D "neofidelity,ntp8835",}, + {} +}; +MODULE_DEVICE_TABLE(of, ntp8835_of_match); + +static struct i2c_driver ntp8835_i2c_driver =3D { + .probe =3D ntp8835_i2c_probe, + .id_table =3D ntp8835_i2c_id, + .driver =3D { + .name =3D "ntp8835", + .of_match_table =3D ntp8835_of_match, + }, +}; +module_i2c_driver(ntp8835_i2c_driver); + +MODULE_AUTHOR("Igor Prusov "); +MODULE_DESCRIPTION("NTP8835 Audio Amplifier Driver"); +MODULE_LICENSE("GPL"); --=20 2.34.1