Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * Freescale MMA7660FC 3-Axis Accelerometer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * Copyright (c) 2016, Intel Corporation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  * IIO driver for Freescale MMA7660FC; 7-bit I2C address: 0x4c.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <linux/acpi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <linux/i2c.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <linux/iio/iio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <linux/iio/sysfs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #define MMA7660_DRIVER_NAME	"mma7660"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #define MMA7660_REG_XOUT	0x00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #define MMA7660_REG_YOUT	0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #define MMA7660_REG_ZOUT	0x02
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #define MMA7660_REG_OUT_BIT_ALERT	BIT(6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #define MMA7660_REG_MODE	0x07
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) #define MMA7660_REG_MODE_BIT_MODE	BIT(0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) #define MMA7660_REG_MODE_BIT_TON	BIT(2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) #define MMA7660_I2C_READ_RETRIES	5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30)  * The accelerometer has one measurement range:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32)  * -1.5g - +1.5g (6-bit, signed)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34)  * scale = (1.5 + 1.5) * 9.81 / (2^6 - 1)	= 0.467142857
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) #define MMA7660_SCALE_AVAIL	"0.467142857"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) static const int mma7660_nscale = 467142857;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) #define MMA7660_CHANNEL(reg, axis) {	\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 	.type = IIO_ACCEL,	\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 	.address = reg,	\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 	.modified = 1,	\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 	.channel2 = IIO_MOD_##axis,	\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),	\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 	.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE),	\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) static const struct iio_chan_spec mma7660_channels[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 	MMA7660_CHANNEL(MMA7660_REG_XOUT, X),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 	MMA7660_CHANNEL(MMA7660_REG_YOUT, Y),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 	MMA7660_CHANNEL(MMA7660_REG_ZOUT, Z),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) enum mma7660_mode {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	MMA7660_MODE_STANDBY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	MMA7660_MODE_ACTIVE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) struct mma7660_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 	struct i2c_client *client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 	struct mutex lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	enum mma7660_mode mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) static IIO_CONST_ATTR(in_accel_scale_available, MMA7660_SCALE_AVAIL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) static struct attribute *mma7660_attributes[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 	&iio_const_attr_in_accel_scale_available.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 	NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) static const struct attribute_group mma7660_attribute_group = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 	.attrs = mma7660_attributes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) static int mma7660_set_mode(struct mma7660_data *data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 				enum mma7660_mode mode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 	struct i2c_client *client = data->client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 	if (mode == data->mode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 	ret = i2c_smbus_read_byte_data(client, MMA7660_REG_MODE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 	if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 		dev_err(&client->dev, "failed to read sensor mode\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 	if (mode == MMA7660_MODE_ACTIVE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 		ret &= ~MMA7660_REG_MODE_BIT_TON;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 		ret |= MMA7660_REG_MODE_BIT_MODE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 		ret &= ~MMA7660_REG_MODE_BIT_TON;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 		ret &= ~MMA7660_REG_MODE_BIT_MODE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 	ret = i2c_smbus_write_byte_data(client, MMA7660_REG_MODE, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 		dev_err(&client->dev, "failed to change sensor mode\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 	data->mode = mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) static int mma7660_read_accel(struct mma7660_data *data, u8 address)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 	int ret, retries = MMA7660_I2C_READ_RETRIES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 	struct i2c_client *client = data->client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 	 * Read data. If the Alert bit is set, the register was read at
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 	 * the same time as the device was attempting to update the content.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 	 * The solution is to read the register again. Do this only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 	 * MMA7660_I2C_READ_RETRIES times to avoid spending too much time
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 	 * in the kernel.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	do {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 		ret = i2c_smbus_read_byte_data(client, address);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 		if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 			dev_err(&client->dev, "register read failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 			return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 	} while (retries-- > 0 && ret & MMA7660_REG_OUT_BIT_ALERT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 	if (ret & MMA7660_REG_OUT_BIT_ALERT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 		dev_err(&client->dev, "all register read retries failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 		return -ETIMEDOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) static int mma7660_read_raw(struct iio_dev *indio_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 				struct iio_chan_spec const *chan,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 				int *val, int *val2, long mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 	struct mma7660_data *data = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	switch (mask) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 	case IIO_CHAN_INFO_RAW:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 		mutex_lock(&data->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 		ret = mma7660_read_accel(data, chan->address);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 		mutex_unlock(&data->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 		if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 			return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 		*val = sign_extend32(ret, 5);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 		return IIO_VAL_INT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 	case IIO_CHAN_INFO_SCALE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 		*val = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 		*val2 = mma7660_nscale;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 		return IIO_VAL_INT_PLUS_NANO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 	return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) static const struct iio_info mma7660_info = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 	.read_raw		= mma7660_read_raw,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 	.attrs			= &mma7660_attribute_group,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) static int mma7660_probe(struct i2c_client *client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 			const struct i2c_device_id *id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 	struct iio_dev *indio_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 	struct mma7660_data *data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 	if (!indio_dev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 		dev_err(&client->dev, "iio allocation failed!\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 	data = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 	data->client = client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 	i2c_set_clientdata(client, indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 	mutex_init(&data->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	data->mode = MMA7660_MODE_STANDBY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 	indio_dev->info = &mma7660_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 	indio_dev->name = MMA7660_DRIVER_NAME;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 	indio_dev->modes = INDIO_DIRECT_MODE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 	indio_dev->channels = mma7660_channels;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 	indio_dev->num_channels = ARRAY_SIZE(mma7660_channels);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	ret = mma7660_set_mode(data, MMA7660_MODE_ACTIVE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 	if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 	ret = iio_device_register(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 	if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 		dev_err(&client->dev, "device_register failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 		mma7660_set_mode(data, MMA7660_MODE_STANDBY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) static int mma7660_remove(struct i2c_client *client)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 	iio_device_unregister(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 	return mma7660_set_mode(iio_priv(indio_dev), MMA7660_MODE_STANDBY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) #ifdef CONFIG_PM_SLEEP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) static int mma7660_suspend(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 	struct mma7660_data *data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 	data = iio_priv(i2c_get_clientdata(to_i2c_client(dev)));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 	return mma7660_set_mode(data, MMA7660_MODE_STANDBY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) static int mma7660_resume(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 	struct mma7660_data *data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	data = iio_priv(i2c_get_clientdata(to_i2c_client(dev)));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 	return mma7660_set_mode(data, MMA7660_MODE_ACTIVE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) static SIMPLE_DEV_PM_OPS(mma7660_pm_ops, mma7660_suspend, mma7660_resume);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) #define MMA7660_PM_OPS (&mma7660_pm_ops)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) #define MMA7660_PM_OPS NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) static const struct i2c_device_id mma7660_i2c_id[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 	{"mma7660", 0},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 	{}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) MODULE_DEVICE_TABLE(i2c, mma7660_i2c_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) static const struct of_device_id mma7660_of_match[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 	{ .compatible = "fsl,mma7660" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 	{ }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) MODULE_DEVICE_TABLE(of, mma7660_of_match);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) static const struct acpi_device_id mma7660_acpi_id[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 	{"MMA7660", 0},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 	{}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) MODULE_DEVICE_TABLE(acpi, mma7660_acpi_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) static struct i2c_driver mma7660_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 	.driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 		.name = "mma7660",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 		.pm = MMA7660_PM_OPS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 		.of_match_table = mma7660_of_match,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 		.acpi_match_table = ACPI_PTR(mma7660_acpi_id),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 	.probe		= mma7660_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 	.remove		= mma7660_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 	.id_table	= mma7660_i2c_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) module_i2c_driver(mma7660_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) MODULE_AUTHOR("Constantin Musca <constantin.musca@intel.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) MODULE_DESCRIPTION("Freescale MMA7660FC 3-Axis Accelerometer driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) MODULE_LICENSE("GPL v2");