From patchwork Wed Aug 14 03:18:08 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: wangshuaijie@awinic.com X-Patchwork-Id: 13762801 Received: from out28-53.mail.aliyun.com (out28-53.mail.aliyun.com [115.124.28.53]) (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 CB613383A1; Wed, 14 Aug 2024 03:18:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=115.124.28.53 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723605518; cv=none; b=oMy02p7iFWSuJ+OSjKl95CTcdHCg6oFc1btv0Zl1mViQwE4J7wNQksHN2XV0quq5ka/5+si83fiHuMGl1qqoAmVEiawrNnCWlaCrK/23yzcMDQctmd0V/fDnVFlCAvL6VR+u+V+32ycsllrK5j6C/c9JYAWKaLMlq/MhdsOz940= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723605518; c=relaxed/simple; bh=ttHmS/YYHu5FxSZlc/WKSKD+7F1eHjZhkXCk7MexZxI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=lUNN/KPWsO50CcS9sY8R1EcRXNlMa+xui2aaKMy76mnOyPFtyxLKAFpJYrW2F4oGc280LLGoirAWKvtQ0I/9rUnILwcVCuoK3vfvHy9X6JMY8qT0HRGScRW2L8x6LIOqC+7poCiUCzbXZ/n74UUT56tzoOPjXdhndwP5qBFFvE0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=awinic.com; spf=pass smtp.mailfrom=awinic.com; arc=none smtp.client-ip=115.124.28.53 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=awinic.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=awinic.com Received: from awinic..(mailfrom:wangshuaijie@awinic.com fp:SMTPD_---.Yr7DVR0_1723605503) by smtp.aliyun-inc.com; Wed, 14 Aug 2024 11:18:24 +0800 From: wangshuaijie@awinic.com To: jic23@kernel.org, lars@metafoo.de, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, kees@kernel.org, gustavoars@kernel.org, linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-hardening@vger.kernel.org Cc: wangshuaijie@awinic.com, liweilei@awinic.com, kangjiajun@awinic.com Subject: [PATCH V7 2/2] iio: proximity: aw96103: Add support for aw96103/aw96105 proximity sensor Date: Wed, 14 Aug 2024 03:18:08 +0000 Message-ID: <20240814031808.2852418-3-wangshuaijie@awinic.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20240814031808.2852418-1-wangshuaijie@awinic.com> References: <20240814031808.2852418-1-wangshuaijie@awinic.com> Precedence: bulk X-Mailing-List: linux-hardening@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: shuaijie wang AW96103 is a low power consumption capacitive touch and proximity controller. Each channel can be independently config as sensor input, shield output. Channel Information: aw96103: 3-channel aw96105: 5-channel Signed-off-by: shuaijie wang --- drivers/iio/proximity/Kconfig | 11 + drivers/iio/proximity/Makefile | 1 + drivers/iio/proximity/aw96103.c | 814 ++++++++++++++++++++++++++++++++ drivers/iio/proximity/aw96103.h | 116 +++++ 4 files changed, 942 insertions(+) create mode 100644 drivers/iio/proximity/aw96103.c create mode 100644 drivers/iio/proximity/aw96103.h diff --git a/drivers/iio/proximity/Kconfig b/drivers/iio/proximity/Kconfig index 2ca3b0bc5eba..974aedf0c057 100644 --- a/drivers/iio/proximity/Kconfig +++ b/drivers/iio/proximity/Kconfig @@ -219,4 +219,15 @@ config VL53L0X_I2C To compile this driver as a module, choose M here: the module will be called vl53l0x-i2c. +config AW96103 + tristate "AW96103/AW96105 Awinic proximity sensor" + select REGMAP_I2C + depends on I2C + help + Say Y here to build a driver for Awinic's AW96103/AW96105 capacitive + proximity sensor. + + To compile this driver as a module, choose M here: the + module will be called aw96103. + endmenu diff --git a/drivers/iio/proximity/Makefile b/drivers/iio/proximity/Makefile index f36598380446..b1e32aa93678 100644 --- a/drivers/iio/proximity/Makefile +++ b/drivers/iio/proximity/Makefile @@ -21,4 +21,5 @@ obj-$(CONFIG_SX_COMMON) += sx_common.o obj-$(CONFIG_SX9500) += sx9500.o obj-$(CONFIG_VCNL3020) += vcnl3020.o obj-$(CONFIG_VL53L0X_I2C) += vl53l0x-i2c.o +obj-$(CONFIG_AW96103) += aw96103.o diff --git a/drivers/iio/proximity/aw96103.c b/drivers/iio/proximity/aw96103.c new file mode 100644 index 000000000000..d8ca138de46e --- /dev/null +++ b/drivers/iio/proximity/aw96103.c @@ -0,0 +1,814 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * AWINIC aw96103 proximity sensor driver + * + * Author: Wang Shuaijie + * + * Copyright (c) 2024 awinic Technology CO., LTD + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "aw96103.h" + +static const unsigned int aw96103_reg_default[] = { + 0x0000, 0x00003f3f, 0x0004, 0x00000064, 0x0008, 0x0017c11e, + 0x000c, 0x05000000, 0x0010, 0x00093ffd, 0x0014, 0x19240009, + 0x0018, 0xd81c0207, 0x001c, 0xff000000, 0x0020, 0x00241900, + 0x0024, 0x00093ff7, 0x0028, 0x58020009, 0x002c, 0xd81c0207, + 0x0030, 0xff000000, 0x0034, 0x00025800, 0x0038, 0x00093fdf, + 0x003c, 0x7d3b0009, 0x0040, 0xd81c0207, 0x0044, 0xff000000, + 0x0048, 0x003b7d00, 0x004c, 0x00093f7f, 0x0050, 0xe9310009, + 0x0054, 0xd81c0207, 0x0058, 0xff000000, 0x005c, 0x0031e900, + 0x0060, 0x00093dff, 0x0064, 0x1a0c0009, 0x0068, 0xd81c0207, + 0x006c, 0xff000000, 0x0070, 0x000c1a00, 0x0074, 0x80093fff, + 0x0078, 0x043d0009, 0x007c, 0xd81c0207, 0x0080, 0xff000000, + 0x0084, 0x003d0400, 0x00a0, 0xe6400000, 0x00a4, 0x00000000, + 0x00a8, 0x010408d2, 0x00ac, 0x00000000, 0x00b0, 0x00000000, + 0x00b8, 0x00005fff, 0x00bc, 0x00000000, 0x00c0, 0x00000000, + 0x00c4, 0x00000000, 0x00c8, 0x00000000, 0x00cc, 0x00000000, + 0x00d0, 0x00000000, 0x00d4, 0x00000000, 0x00d8, 0x00000000, + 0x00dc, 0xe6447800, 0x00e0, 0x78000000, 0x00e4, 0x010408d2, + 0x00e8, 0x00000000, 0x00ec, 0x00000000, 0x00f4, 0x00005fff, + 0x00f8, 0x00000000, 0x00fc, 0x00000000, 0x0100, 0x00000000, + 0x0104, 0x00000000, 0x0108, 0x00000000, 0x010c, 0x02000000, + 0x0110, 0x00000000, 0x0114, 0x00000000, 0x0118, 0xe6447800, + 0x011c, 0x78000000, 0x0120, 0x010408d2, 0x0124, 0x00000000, + 0x0128, 0x00000000, 0x0130, 0x00005fff, 0x0134, 0x00000000, + 0x0138, 0x00000000, 0x013c, 0x00000000, 0x0140, 0x00000000, + 0x0144, 0x00000000, 0x0148, 0x02000000, 0x014c, 0x00000000, + 0x0150, 0x00000000, 0x0154, 0xe6447800, 0x0158, 0x78000000, + 0x015c, 0x010408d2, 0x0160, 0x00000000, 0x0164, 0x00000000, + 0x016c, 0x00005fff, 0x0170, 0x00000000, 0x0174, 0x00000000, + 0x0178, 0x00000000, 0x017c, 0x00000000, 0x0180, 0x00000000, + 0x0184, 0x02000000, 0x0188, 0x00000000, 0x018c, 0x00000000, + 0x0190, 0xe6447800, 0x0194, 0x78000000, 0x0198, 0x010408d2, + 0x019c, 0x00000000, 0x01a0, 0x00000000, 0x01a8, 0x00005fff, + 0x01ac, 0x00000000, 0x01b0, 0x00000000, 0x01b4, 0x00000000, + 0x01b8, 0x00000000, 0x01bc, 0x00000000, 0x01c0, 0x02000000, + 0x01c4, 0x00000000, 0x01c8, 0x00000000, 0x01cc, 0xe6407800, + 0x01d0, 0x78000000, 0x01d4, 0x010408d2, 0x01d8, 0x00000000, + 0x01dc, 0x00000000, 0x01e4, 0x00005fff, 0x01e8, 0x00000000, + 0x01ec, 0x00000000, 0x01f0, 0x00000000, 0x01f4, 0x00000000, + 0x01f8, 0x00000000, 0x01fc, 0x02000000, 0x0200, 0x00000000, + 0x0204, 0x00000000, 0x0208, 0x00000008, 0x020c, 0x0000000d, + 0x41fc, 0x00000000, 0x4400, 0x00000000, 0x4410, 0x00000000, + 0x4420, 0x00000000, 0x4430, 0x00000000, 0x4440, 0x00000000, + 0x4450, 0x00000000, 0x4460, 0x00000000, 0x4470, 0x00000000, + 0xf080, 0x00003018, 0xf084, 0x00000fff, 0xf800, 0x00000000, + 0xf804, 0x00002e00, 0xf8d0, 0x00000001, 0xf8d4, 0x00000000, + 0xff00, 0x00000301, 0xff0c, 0x01000000, 0xffe0, 0x00000000, + 0xfff4, 0x00004011, 0x0090, 0x00000000, 0x0094, 0x00000000, + 0x0098, 0x00000000, 0x009c, 0x3f3f3f3f, +}; + +static void aw96103_parsing_bin_file(struct aw_bin *bin) +{ + int i; + + bin->valid_data_addr = AW96103_BIN_VALID_DATA_OFFSET; + bin->valid_data_len = + *(unsigned int *)(bin->data + AW96103_BIN_DATA_LEN_OFFSET) - + AW96103_BIN_DATA_REG_NUM_SIZE; + for (i = 0; i < AW96103_BIN_CHIP_TYPE_SIZE; i++) { + bin->chip_type[i] = + *(bin->data + AW96103_BIN_CHIP_TYPE_OFFSET + i); + } +} + +static const struct regmap_config aw96103_regmap_confg = { + .reg_bits = 16, + .val_bits = 32, +}; + +static const struct iio_event_spec aw_common_events[3] = { + { + .type = IIO_EV_TYPE_THRESH, + .dir = IIO_EV_DIR_RISING, + .mask_separate = BIT(IIO_EV_INFO_PERIOD), + }, + { + .type = IIO_EV_TYPE_THRESH, + .dir = IIO_EV_DIR_FALLING, + .mask_separate = BIT(IIO_EV_INFO_PERIOD), + }, + { + .type = IIO_EV_TYPE_THRESH, + .dir = IIO_EV_DIR_EITHER, + .mask_separate = BIT(IIO_EV_INFO_ENABLE) | + BIT(IIO_EV_INFO_HYSTERESIS) | + BIT(IIO_EV_INFO_VALUE), + } +}; + +static int aw96103_get_diff_raw(struct aw96103 *aw96103, + unsigned int chan, int *buf) +{ + u32 data; + int ret; + + ret = regmap_read(aw96103->regmap, + AW96103_REG_DIFF_CH0 + chan * 4, &data); + if (ret) + return ret; + *buf = (int)(data / AW_DATA_PROCESS_FACTOR); + + return 0; +} + +static int aw96103_read_raw(struct iio_dev *indio_dev, + const struct iio_chan_spec *chan, + int *val, int *val2, long mask) +{ + struct aw96103 *aw96103; + int ret; + + aw96103 = iio_priv(indio_dev); + switch (mask) { + case IIO_CHAN_INFO_RAW: + ret = aw96103_get_diff_raw(aw96103, chan->channel, val); + if (ret) + return ret; + + return IIO_VAL_INT; + default: + return -EINVAL; + } +} + +static int aw96103_write_thresh(struct aw96103 *aw96103, + const struct iio_chan_spec *chan, int val) +{ + unsigned int reg; + int ret; + + reg = AW96103_REG_PROXTH0_CH0 + chan->channel * AW96103_PROXTH_CH_STEP; + mutex_lock(&aw96103->mutex); + ret = regmap_write(aw96103->regmap, reg, val); + mutex_unlock(&aw96103->mutex); + + return ret; +} + +static int aw96103_read_thresh(struct aw96103 *aw96103, + const struct iio_chan_spec *chan, int *val) +{ + unsigned int reg; + int ret; + + reg = AW96103_REG_PROXTH0_CH0 + chan->channel * AW96103_PROXTH_CH_STEP; + ret = regmap_read(aw96103->regmap, reg, val); + if (ret) + return ret; + + return IIO_VAL_INT; +} + +static int aw96103_write_out_debounce(struct aw96103 *aw96103, + const struct iio_chan_spec *chan, int val) +{ + unsigned int reg, reg_val; + int ret; + + reg = AW96103_REG_PROXCTRL_CH0 + chan->channel * AW96103_PROXTH_CH_STEP; + reg_val = FIELD_PREP(AW96103_OUTDEB_MASK, val); + mutex_lock(&aw96103->mutex); + ret = regmap_update_bits(aw96103->regmap, reg, + AW96103_OUTDEB_MASK, reg_val); + mutex_unlock(&aw96103->mutex); + + return ret; +} + +static int aw96103_read_out_debounce(struct aw96103 *aw96103, + const struct iio_chan_spec *chan, int *val) +{ + unsigned int reg, reg_val; + int ret; + + reg = AW96103_REG_PROXCTRL_CH0 + chan->channel * AW96103_PROXTH_CH_STEP; + ret = regmap_read(aw96103->regmap, reg, ®_val); + if (ret) + return ret; + *val = FIELD_GET(AW96103_OUTDEB_MASK, reg_val); + + return IIO_VAL_INT; +} + +static int aw96103_write_in_debounce(struct aw96103 *aw96103, + const struct iio_chan_spec *chan, int val) +{ + unsigned int reg, reg_val; + int ret; + + reg = AW96103_REG_PROXCTRL_CH0 + chan->channel * AW96103_PROXTH_CH_STEP; + reg_val = FIELD_PREP(AW96103_INDEB_MASK, val); + mutex_lock(&aw96103->mutex); + ret = regmap_update_bits(aw96103->regmap, reg, + AW96103_INDEB_MASK, reg_val); + mutex_unlock(&aw96103->mutex); + + return ret; +} + +static int aw96103_read_in_debounce(struct aw96103 *aw96103, + const struct iio_chan_spec *chan, int *val) +{ + unsigned int reg, reg_val; + int ret; + + reg = AW96103_REG_PROXCTRL_CH0 + chan->channel * AW96103_PROXTH_CH_STEP; + ret = regmap_read(aw96103->regmap, reg, ®_val); + if (ret) + return ret; + *val = FIELD_GET(AW96103_INDEB_MASK, reg_val); + + return IIO_VAL_INT; +} + +static int aw96103_write_hysteresis(struct aw96103 *aw96103, + const struct iio_chan_spec *chan, int val) +{ + unsigned int reg, reg_val; + int ret; + + reg = AW96103_REG_PROXCTRL_CH0 + chan->channel * AW96103_PROXTH_CH_STEP; + reg_val = FIELD_PREP(AW96103_THHYST_MASK, val); + mutex_lock(&aw96103->mutex); + ret = regmap_update_bits(aw96103->regmap, reg, + AW96103_THHYST_MASK, reg_val); + mutex_unlock(&aw96103->mutex); + + return ret; +} + +static int aw96103_read_hysteresis(struct aw96103 *aw96103, + const struct iio_chan_spec *chan, int *val) +{ + unsigned int reg, reg_val; + int ret; + + reg = AW96103_REG_PROXCTRL_CH0 + chan->channel * AW96103_PROXTH_CH_STEP; + ret = regmap_read(aw96103->regmap, reg, ®_val); + if (ret) + return ret; + *val = FIELD_GET(AW96103_THHYST_MASK, reg_val); + + return IIO_VAL_INT; +} + +static int aw96103_read_event_val(struct iio_dev *indio_dev, + const struct iio_chan_spec *chan, + enum iio_event_type type, + enum iio_event_direction dir, + enum iio_event_info info, int *val, int *val2) +{ + struct aw96103 *aw96103 = iio_priv(indio_dev); + + if (chan->type != IIO_PROXIMITY) + return -EINVAL; + + switch (info) { + case IIO_EV_INFO_VALUE: + return aw96103_read_thresh(aw96103, chan, val); + case IIO_EV_INFO_PERIOD: + switch (dir) { + case IIO_EV_DIR_RISING: + return aw96103_read_out_debounce(aw96103, chan, val); + case IIO_EV_DIR_FALLING: + return aw96103_read_in_debounce(aw96103, chan, val); + default: + return -EINVAL; + } + case IIO_EV_INFO_HYSTERESIS: + return aw96103_read_hysteresis(aw96103, chan, val); + default: + return -EINVAL; + } +} + +static int aw96103_write_event_val(struct iio_dev *indio_dev, + const struct iio_chan_spec *chan, + enum iio_event_type type, + enum iio_event_direction dir, + enum iio_event_info info, int val, int val2) +{ + struct aw96103 *aw96103 = iio_priv(indio_dev); + + if (chan->type != IIO_PROXIMITY) + return -EINVAL; + + switch (info) { + case IIO_EV_INFO_VALUE: + return aw96103_write_thresh(aw96103, chan, val); + case IIO_EV_INFO_PERIOD: + switch (dir) { + case IIO_EV_DIR_RISING: + return aw96103_write_out_debounce(aw96103, chan, val); + case IIO_EV_DIR_FALLING: + return aw96103_write_in_debounce(aw96103, chan, val); + default: + return -EINVAL; + } + case IIO_EV_INFO_HYSTERESIS: + return aw96103_write_hysteresis(aw96103, chan, val); + default: + return -EINVAL; + } +} + +static int aw96103_read_event_config(struct iio_dev *indio_dev, + const struct iio_chan_spec *chan, + enum iio_event_type type, + enum iio_event_direction dir) +{ + struct aw96103 *aw96103 = iio_priv(indio_dev); + + return aw96103->channels_arr[chan->channel].used; +} + +static int aw96103_write_event_config(struct iio_dev *indio_dev, + const struct iio_chan_spec *chan, + enum iio_event_type type, + enum iio_event_direction dir, int state) +{ + struct aw96103 *aw96103 = iio_priv(indio_dev); + + aw96103->channels_arr[chan->channel].used = !!state; + + if (!!state) + return regmap_update_bits(aw96103->regmap, + AW96103_REG_SCANCTRL0, + BIT(chan->channel), BIT(chan->channel)); + else + return regmap_update_bits(aw96103->regmap, + AW96103_REG_SCANCTRL0, + BIT(chan->channel), 0); +} + +struct iio_info iio_info = { + .read_raw = aw96103_read_raw, + .read_event_value = aw96103_read_event_val, + .write_event_value = aw96103_write_event_val, + .read_event_config = aw96103_read_event_config, + .write_event_config = aw96103_write_event_config, +}; + +static int aw96103_iio_init(struct iio_dev *indio_dev) +{ + struct aw96103 *aw96103 = iio_priv(indio_dev); + struct iio_chan_spec *aw96103_channels; + unsigned int i; + + /* + * There is one more logical channel than the actual channels, + * and the extra logical channel is used for temperature detection + * but not for status detection. The specific channel used for + * temperature detection is determined by the register configuration. + */ + aw96103->channels_arr = devm_kcalloc(aw96103->dev, + aw96103->max_channels + 1, + sizeof(struct aw_channels_info), GFP_KERNEL); + if (!aw96103->channels_arr) + return -ENOMEM; + + aw96103_channels = devm_kcalloc(aw96103->dev, aw96103->max_channels + 1, + sizeof(*aw96103_channels), GFP_KERNEL); + if (!aw96103_channels) + return -ENOMEM; + + for (i = 0; i <= aw96103->max_channels; i++) { + aw96103_channels[i].type = IIO_PROXIMITY; + aw96103_channels[i].info_mask_separate = + BIT(IIO_CHAN_INFO_RAW); + aw96103_channels[i].indexed = 1; + aw96103_channels[i].channel = i; + aw96103_channels[i].event_spec = aw_common_events; + aw96103_channels[i].num_event_specs = + ARRAY_SIZE(aw_common_events); + } + + indio_dev->modes = INDIO_DIRECT_MODE; + indio_dev->num_channels = aw96103->max_channels + 1; + indio_dev->channels = aw96103_channels; + indio_dev->info = &iio_info; + indio_dev->name = "aw96103_sensor"; + indio_dev->dev.parent = aw96103->dev; + + return devm_iio_device_register(aw96103->dev, indio_dev); +} + +static int aw96103_channel_scan_start(struct aw96103 *aw96103) +{ + int ret; + + ret = regmap_write(aw96103->regmap, AW96103_REG_CMD, + AW96103_ACTIVE_MODE); + if (ret) + return ret; + + return regmap_write(aw96103->regmap, AW96103_REG_IRQEN, + aw96103->hostirqen); +} + +static int aw96103_reg_version_comp(struct aw96103 *aw96103, + struct aw_bin *aw_bin) +{ + u32 blfilt1_data, blfilt1_tmp; + unsigned char i; + int ret; + + /* + * If the chip version is AW96103A and the loaded register + * configuration file is for AW96103, special handling of the + * AW96103_REG_BLRSTRNG_CH0 register is required. + */ + if ((aw96103->vers == AW96103A) && (aw_bin->chip_type[7] == '\0')) { + for (i = 0; i <= aw96103->max_channels; i++) { + ret = regmap_read(aw96103->regmap, + AW96103_REG_BLFILT_CH0 + + (AW96103_BLFILT_CH_STEP * i), + &blfilt1_data); + if (ret) + return ret; + blfilt1_tmp = FIELD_GET(AW96103_BLERRTRIG_MASK, + blfilt1_data); + if (blfilt1_tmp == 1) { + ret = regmap_update_bits(aw96103->regmap, + AW96103_REG_BLRSTRNG_CH0 + + (AW96103_BLFILT_CH_STEP * i), + AW96103_BLRSTRNG_MASK, 1 << i); + if (ret) + return ret; + } + } + } + + return 0; +} + +static int aw96103_bin_valid_loaded(struct aw96103 *aw96103, + struct aw_bin *aw_bin_data_s) +{ + unsigned int start_addr = aw_bin_data_s->valid_data_addr; + u32 i, reg_data; + u16 reg_addr; + int ret; + + for (i = 0; i < aw_bin_data_s->valid_data_len; + i += 6, start_addr += 6) { + reg_addr = *(u16 *)(aw_bin_data_s->data + start_addr); + reg_data = *(u32 *)(aw_bin_data_s->data + start_addr + 2); + if ((reg_addr == AW96103_REG_EEDA0) || + (reg_addr == AW96103_REG_EEDA1)) + continue; + if (reg_addr == AW96103_REG_IRQEN) { + aw96103->hostirqen = reg_data; + continue; + } + if (reg_addr == AW96103_REG_SCANCTRL0) + aw96103->chan_en = FIELD_GET(AW96103_CHAN_EN_MASK, + reg_data); + ret = regmap_write(aw96103->regmap, reg_addr, reg_data); + if (ret < 0) + return ret; + + } + ret = aw96103_reg_version_comp(aw96103, aw_bin_data_s); + if (ret) + return ret; + + return aw96103_channel_scan_start(aw96103); +} + +static int aw96103_para_loaded(struct aw96103 *aw96103) +{ + int i, ret; + + for (i = 0; i < ARRAY_SIZE(aw96103_reg_default); i += 2) { + ret = regmap_write(aw96103->regmap, + (u16)aw96103_reg_default[i], + (u32)aw96103_reg_default[i + 1]); + if (ret) + return ret; + if (aw96103_reg_default[i] == AW96103_REG_IRQEN) + aw96103->hostirqen = aw96103_reg_default[i + 1]; + if (aw96103_reg_default[i] == AW96103_REG_SCANCTRL0) + aw96103->chan_en = FIELD_GET(AW96103_CHAN_EN_MASK, + aw96103_reg_default[i + 1]); + } + + return aw96103_channel_scan_start(aw96103); +} + +static int aw96103_cfg_all_loaded(const struct firmware *cont, + struct aw96103 *aw96103) +{ + if (!cont) + return -EINVAL; + + struct aw_bin *aw_bin __free(kfree) = + kzalloc(cont->size + sizeof(*aw_bin), GFP_KERNEL); + if (!aw_bin) + return -ENOMEM; + + aw_bin->len = cont->size; + memcpy(aw_bin->data, cont->data, cont->size); + aw96103_parsing_bin_file(aw_bin); + + snprintf(aw96103->chip_type, sizeof(aw96103->chip_type), "%s", + aw_bin->chip_type); + + return aw96103_bin_valid_loaded(aw96103, aw_bin); +} + +static void aw96103_cfg_update(const struct firmware *fw, void *data) +{ + struct aw96103 *aw96103 = data; + int ret, i; + + if (!fw || !fw->data) { + dev_err(aw96103->dev, "%s: No firmware.\n", __func__); + return; + } + + ret = aw96103_cfg_all_loaded(fw, aw96103); + if (ret) + ret = aw96103_para_loaded(aw96103); + release_firmware(fw); + + for (i = 0; i <= aw96103->max_channels; i++) { + if ((aw96103->chan_en >> i) & 0x01) + aw96103->channels_arr[i].used = true; + else + aw96103->channels_arr[i].used = false; + } +} + +static int aw96103_sw_reset(struct aw96103 *aw96103) +{ + int ret; + + ret = regmap_write(aw96103->regmap, AW96103_REG_RESET, 0); + msleep(20); + + return ret; +} + +static void aw96103_irq_handle(struct iio_dev *indio_dev) +{ + struct aw96103 *aw96103 = iio_priv(indio_dev); + u32 curr_status_val; + u32 curr_status; + unsigned char i; + int ret; + + ret = regmap_read(aw96103->regmap, AW96103_REG_STAT0, &curr_status_val); + if (ret) + return; + + /* + * Iteratively analyze the interrupt status of different channels, + * with each channel having 4 interrupt states. + */ + for (i = 0; i < AW_CHANNEL_MAX; i++) { + curr_status = (((curr_status_val >> (24 + i)) & 0x1)) | + (((curr_status_val >> (16 + i)) & 0x1) << 1) | + (((curr_status_val >> (8 + i)) & 0x1) << 2) | + (((curr_status_val >> i) & 0x1) << 3); + + if (!aw96103->channels_arr[i].used || + (aw96103->channels_arr[i].last_channel_info == curr_status)) + continue; + + switch (curr_status) { + case FAR: + iio_push_event(indio_dev, + IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY, i, + IIO_EV_TYPE_THRESH, + IIO_EV_DIR_RISING), + iio_get_time_ns(indio_dev)); + break; + case TRIGGER_TH0: + case TRIGGER_TH1: + case TRIGGER_TH2: + case TRIGGER_TH3: + iio_push_event(indio_dev, + IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY, i, + IIO_EV_TYPE_THRESH, + IIO_EV_DIR_FALLING), + iio_get_time_ns(indio_dev)); + break; + default: + return; + } + aw96103->channels_arr[i].last_channel_info = curr_status; + } +} + +static void aw96103_interrupt_clear(struct iio_dev *indio_dev) +{ + struct aw96103 *aw96103 = iio_priv(indio_dev); + int ret; + + ret = regmap_read(aw96103->regmap, AW96103_REG_IRQSRC, + &aw96103->irq_status); + if (ret) + return; + + aw96103_irq_handle(indio_dev); +} + +static irqreturn_t aw96103_irq(int irq, void *data) +{ + struct iio_dev *indio_dev = (struct iio_dev *)data; + + aw96103_interrupt_clear(indio_dev); + + return IRQ_HANDLED; +} + +static int aw96103_interrupt_init(struct iio_dev *indio_dev) +{ + struct aw96103 *aw96103 = iio_priv(indio_dev); + unsigned int irq_status; + int ret; + + ret = regmap_write(aw96103->regmap, AW96103_REG_IRQEN, 0); + if (ret) + return ret; + ret = regmap_read(aw96103->regmap, AW96103_REG_IRQSRC, &irq_status); + if (ret) + return ret; + ret = devm_request_threaded_irq(aw96103->dev, aw96103->i2c->irq, + NULL, aw96103_irq, IRQF_ONESHOT, + "aw96103_irq", indio_dev); + if (ret) + return ret; + + return regmap_write(aw96103->regmap, AW96103_REG_IRQEN, + aw96103->hostirqen); +} + +static int aw96103_wait_chip_init(struct aw96103 *aw96103) +{ + unsigned int cnt = 20; + u32 reg_data; + int ret; + + while (cnt--) { + ret = regmap_read(aw96103->regmap, AW96103_REG_IRQSRC, + ®_data); + if (ret) + return ret; + + if (FIELD_GET(AW96103_INITOVERIRQ_MASK, reg_data)) + return 0; + mdelay(1); + } + + return -EINVAL; +} + +static int aw96103_read_chipid(struct aw96103 *aw96103) +{ + unsigned char cnt = 0; + u32 reg_val = 0; + int ret; + + while (cnt < AW_READ_CHIPID_RETRIES) { + ret = regmap_read(aw96103->regmap, AW96103_REG_CHIPID, + ®_val); + if (ret < 0) { + cnt++; + usleep_range(2000, 3000); + } else { + reg_val = FIELD_GET(AW96103_CHIPID_MASK, reg_val); + break; + } + } + + if (reg_val != AW96103_CHIP_ID) + dev_err(aw96103->dev, + "chipid error, error_id=0x%08X\n", reg_val); + + return 0; +} + +static int aw96103_version_init(struct aw96103 *aw96103) +{ + u32 fw_ver; + int ret; + + ret = regmap_read(aw96103->regmap, AW96103_REG_FWVER2, &fw_ver); + if (ret) + return ret; + if (fw_ver == AW_CHIP_AW96103A) + aw96103->vers = AW96103A; + else + aw96103->vers = AW96103; + + return 0; +} + +static int aw96103_i2c_probe(struct i2c_client *i2c) +{ + const struct i2c_device_id *id = i2c_client_get_device_id(i2c); + enum aw96103_sensor_type sensor_type; + struct iio_dev *aw_iio_dev; + struct aw96103 *aw96103; + int ret; + + aw_iio_dev = devm_iio_device_alloc(&i2c->dev, sizeof(*aw96103)); + if (!aw_iio_dev) + return -ENOMEM; + + aw96103 = iio_priv(aw_iio_dev); + aw96103->dev = &i2c->dev; + aw96103->i2c = i2c; + mutex_init(&aw96103->mutex); + i2c_set_clientdata(i2c, aw96103); + + sensor_type = (enum aw96103_sensor_type)id->driver_data; + switch (sensor_type) { + case AW96103_VAL: + aw96103->max_channels = AW_CHANNEL3; + break; + case AW96105_VAL: + aw96103->max_channels = AW_CHANNEL5; + break; + default: + return -EINVAL; + } + + aw96103->regmap = devm_regmap_init_i2c(i2c, &aw96103_regmap_confg); + if (IS_ERR(aw96103->regmap)) + return PTR_ERR(aw96103->regmap); + + ret = devm_regulator_get_enable(aw96103->dev, "vcc"); + if (ret < 0) + return ret; + + ret = aw96103_read_chipid(aw96103); + if (ret) + return ret; + + ret = aw96103_sw_reset(aw96103); + if (ret) + return ret; + + ret = aw96103_wait_chip_init(aw96103); + if (ret) + return ret; + + ret = aw96103_version_init(aw96103); + if (ret) + return ret; + + ret = request_firmware_nowait(THIS_MODULE, true, "aw96103_0.bin", + aw96103->dev, GFP_KERNEL, aw96103, aw96103_cfg_update); + if (ret) + return ret; + + ret = aw96103_interrupt_init(aw_iio_dev); + if (ret) + return ret; + + return aw96103_iio_init(aw_iio_dev); +} + +static const struct of_device_id aw96103_dt_match[] = { + { .compatible = "awinic,aw96103", (void *)AW96103_VAL }, + { .compatible = "awinic,aw96105", (void *)AW96105_VAL }, + { } +}; +MODULE_DEVICE_TABLE(of, aw96103_dt_match); + +static const struct i2c_device_id aw96103_i2c_id[] = { + { "aw96103", AW96103_VAL }, + { "aw96105", AW96105_VAL }, + { } +}; +MODULE_DEVICE_TABLE(i2c, aw96103_i2c_id); + +static struct i2c_driver aw96103_i2c_driver = { + .driver = { + .name = "aw96103_sensor", + .of_match_table = aw96103_dt_match, + }, + .probe = aw96103_i2c_probe, + .id_table = aw96103_i2c_id, +}; +module_i2c_driver(aw96103_i2c_driver); + +MODULE_AUTHOR("Wang Shuaijie "); +MODULE_DESCRIPTION("Driver for Awinic AW96103 proximity sensor"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/iio/proximity/aw96103.h b/drivers/iio/proximity/aw96103.h new file mode 100644 index 000000000000..78716e34b54c --- /dev/null +++ b/drivers/iio/proximity/aw96103.h @@ -0,0 +1,116 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +#ifndef _AW96103_H_ +#define _AW96103_H_ + +#define AW_DATA_PROCESS_FACTOR 1024 +#define AW_CHIP_AW96103A 0x03000b00 +#define AW_READ_CHIPID_RETRIES 3 +#define AW96103_CHIP_ID 0xa961 +#define AW96103_BIN_VALID_DATA_OFFSET 64 +#define AW96103_BIN_DATA_LEN_OFFSET 16 +#define AW96103_BIN_DATA_REG_NUM_SIZE 4 +#define AW96103_BIN_CHIP_TYPE_SIZE 8 +#define AW96103_BIN_CHIP_TYPE_OFFSET 24 + +#define AW96103_REG_SCANCTRL0 0x0000 +#define AW96103_REG_STAT0 0x0090 +#define AW96103_REG_BLFILT_CH0 0x00A8 +#define AW96103_REG_BLRSTRNG_CH0 0x00B4 +#define AW96103_REG_DIFF_CH0 0x0240 +#define AW96103_REG_FWVER2 0x0410 +#define AW96103_REG_CMD 0xF008 +#define AW96103_REG_IRQSRC 0xF080 +#define AW96103_REG_IRQEN 0xF084 +#define AW96103_REG_RESET 0xFF0C +#define AW96103_REG_CHIPID 0xFF10 +#define AW96103_REG_EEDA0 0x0408 +#define AW96103_REG_EEDA1 0x040C +#define AW96103_REG_PROXCTRL_CH0 0x00B0 +#define AW96103_REG_PROXTH0_CH0 0x00B8 +#define AW96103_PROXTH_CH_STEP 0x3C +#define AW96103_THHYST_MASK GENMASK(13, 12) +#define AW96103_INDEB_MASK GENMASK(11, 10) +#define AW96103_OUTDEB_MASK GENMASK(9, 8) +#define AW96103_INITOVERIRQ_MASK BIT(0) +#define AW96103_BLFILT_CH_STEP 0x3C +#define AW96103_BLRSTRNG_MASK GENMASK(5, 0) +#define AW96103_CHIPID_MASK GENMASK(31, 16) +#define AW96103_BLERRTRIG_MASK BIT(25) +#define AW96103_CHAN_EN_MASK GENMASK(5, 0) + +/** + * struct aw_bin - Store the data obtained from parsing the configuration file. + * @chip_type: Frame header information-chip type + * @valid_data_len: Length of valid data obtained after parsing + * @valid_data_addr: The offset address of the valid data obtained + * after parsing relative to info + * @len: The size of the bin file obtained from the firmware + * @data: Store the bin file obtained from the firmware + */ +struct aw_bin { + unsigned char chip_type[8]; + unsigned int valid_data_len; + unsigned int valid_data_addr; + unsigned int len; + unsigned char data[] __counted_by(len); +}; + +enum aw96103_sar_vers { + AW96103 = 2, + AW96103A = 6, + AW96103B = 0xa, +}; + +enum aw96103_operation_mode { + AW96103_ACTIVE_MODE = 1, + AW96103_SLEEP_MODE, + AW96103_DEEPSLEEP_MODE, + AW96103B_DEEPSLEEP_MODE, +}; + +enum aw96103_channel { + AW_CHANNEL0, + AW_CHANNEL1, + AW_CHANNEL2, + AW_CHANNEL3, + AW_CHANNEL4, + AW_CHANNEL5, + AW_CHANNEL_MAX +}; + +enum aw96103_irq_trigger_position { + FAR, + TRIGGER_TH0, + TRIGGER_TH1 = 0x03, + TRIGGER_TH2 = 0x07, + TRIGGER_TH3 = 0x0f, +}; + +enum aw96103_sensor_type { + AW96103_VAL, + AW96105_VAL, +}; + +struct aw_channels_info { + bool used; + unsigned int last_channel_info; +}; + +struct aw96103 { + unsigned char vers; + unsigned int irq_status; + unsigned int hostirqen; + struct delayed_work cfg_work; + struct i2c_client *i2c; + struct regmap *regmap; + struct device *dev; + struct aw_bin *aw_bin; + struct aw_channels_info *channels_arr; + unsigned char chip_type[9]; + unsigned int max_channels; + unsigned int chan_en; + struct mutex mutex; +}; + +#endif +