Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * mb1232.c - Support for MaxBotix I2CXL-MaxSonar-EZ series ultrasonic
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *   ranger with i2c interface
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * actually tested with mb1232 type
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  * Copyright (c) 2019 Andreas Klinger <ak@it-klinger.de>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9)  * For details about the device see:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10)  * https://www.maxbotix.com/documents/I2CXL-MaxSonar-EZ_Datasheet.pdf
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <linux/i2c.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <linux/of_irq.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include <linux/bitops.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #include <linux/iio/iio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #include <linux/iio/sysfs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #include <linux/iio/buffer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #include <linux/iio/trigger_consumer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #include <linux/iio/triggered_buffer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) /* registers of MaxSonar device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) #define MB1232_RANGE_COMMAND	0x51	/* Command for reading range */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) #define MB1232_ADDR_UNLOCK_1	0xAA	/* Command 1 for changing address */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) #define MB1232_ADDR_UNLOCK_2	0xA5	/* Command 2 for changing address */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) struct mb1232_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 	struct i2c_client	*client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 	struct mutex		lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 	 * optionally a gpio can be used to announce when ranging has
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 	 * finished
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 	 * since we are just using the falling trigger of it we request
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 	 * only the interrupt for announcing when data is ready to be read
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 	struct completion	ranging;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 	int			irqnr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 	/* Ensure correct alignment of data to push to IIO buffer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 	struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 		s16 distance;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 		s64 ts __aligned(8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 	} scan;
^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 irqreturn_t mb1232_handle_irq(int irq, void *dev_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 	struct iio_dev *indio_dev = dev_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 	struct mb1232_data *data = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	complete(&data->ranging);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) static s16 mb1232_read_distance(struct mb1232_data *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 	struct i2c_client *client = data->client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	s16 distance;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	__be16 buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 	mutex_lock(&data->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	reinit_completion(&data->ranging);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 	ret = i2c_smbus_write_byte(client, MB1232_RANGE_COMMAND);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 		dev_err(&client->dev, "write command - err: %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 		goto error_unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 	if (data->irqnr >= 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 		/* it cannot take more than 100 ms */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 		ret = wait_for_completion_killable_timeout(&data->ranging,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 									HZ/10);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 		if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 			goto error_unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 		else if (ret == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 			ret = -ETIMEDOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 			goto error_unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 		/* use simple sleep if announce irq is not connected */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 		msleep(15);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 	ret = i2c_master_recv(client, (char *)&buf, sizeof(buf));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 	if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 		dev_err(&client->dev, "i2c_master_recv: ret=%d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 		goto error_unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 	distance = __be16_to_cpu(buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 	/* check for not returning misleading error codes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 	if (distance < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 		dev_err(&client->dev, "distance=%d\n", distance);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 		ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 		goto error_unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 	mutex_unlock(&data->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	return distance;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) error_unlock:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	mutex_unlock(&data->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) static irqreturn_t mb1232_trigger_handler(int irq, void *p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 	struct iio_poll_func *pf = p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 	struct iio_dev *indio_dev = pf->indio_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 	struct mb1232_data *data = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 	data->scan.distance = mb1232_read_distance(data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 	if (data->scan.distance < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 		goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 	iio_push_to_buffers_with_timestamp(indio_dev, &data->scan,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 					   pf->timestamp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 	iio_trigger_notify_done(indio_dev->trig);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 	return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) static int mb1232_read_raw(struct iio_dev *indio_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 			    struct iio_chan_spec const *channel, int *val,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 			    int *val2, long mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 	struct mb1232_data *data = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	if (channel->type != IIO_DISTANCE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 	switch (mask) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 	case IIO_CHAN_INFO_RAW:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 		ret = mb1232_read_distance(data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 		if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 			return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 		*val = ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 		return IIO_VAL_INT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 	case IIO_CHAN_INFO_SCALE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 		/* 1 LSB is 1 cm */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 		*val = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 		*val2 = 10000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 		return IIO_VAL_INT_PLUS_MICRO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) static const struct iio_chan_spec mb1232_channels[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 		.type = IIO_DISTANCE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 				      BIT(IIO_CHAN_INFO_SCALE),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 		.scan_index = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 		.scan_type = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 			.sign = 's',
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 			.realbits = 16,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 			.storagebits = 16,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 			.endianness = IIO_CPU,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 		},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 	IIO_CHAN_SOFT_TIMESTAMP(1),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) static const struct iio_info mb1232_info = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 	.read_raw = mb1232_read_raw,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) static int mb1232_probe(struct i2c_client *client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 					 const struct i2c_device_id *id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 	struct iio_dev *indio_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 	struct mb1232_data *data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 	struct device *dev = &client->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	if (!i2c_check_functionality(client->adapter,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 					I2C_FUNC_SMBUS_READ_BYTE |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 					I2C_FUNC_SMBUS_WRITE_BYTE))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 		return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 	indio_dev = devm_iio_device_alloc(dev, sizeof(*data));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 	if (!indio_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 	data = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 	i2c_set_clientdata(client, indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 	data->client = client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 	indio_dev->info = &mb1232_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 	indio_dev->name = id->name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 	indio_dev->modes = INDIO_DIRECT_MODE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 	indio_dev->channels = mb1232_channels;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 	indio_dev->num_channels = ARRAY_SIZE(mb1232_channels);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 	mutex_init(&data->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 	init_completion(&data->ranging);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 	data->irqnr = irq_of_parse_and_map(dev->of_node, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 	if (data->irqnr <= 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 		/* usage of interrupt is optional */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 		data->irqnr = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 		ret = devm_request_irq(dev, data->irqnr, mb1232_handle_irq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 				IRQF_TRIGGER_FALLING, id->name, indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 		if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 			dev_err(dev, "request_irq: %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 			return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 	ret = devm_iio_triggered_buffer_setup(dev, indio_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 			iio_pollfunc_store_time, mb1232_trigger_handler, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 	if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 		dev_err(dev, "setup of iio triggered buffer failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 	return devm_iio_device_register(dev, indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) static const struct of_device_id of_mb1232_match[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 	{ .compatible = "maxbotix,mb1202", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 	{ .compatible = "maxbotix,mb1212", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 	{ .compatible = "maxbotix,mb1222", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 	{ .compatible = "maxbotix,mb1232", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 	{ .compatible = "maxbotix,mb1242", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 	{ .compatible = "maxbotix,mb7040", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 	{ .compatible = "maxbotix,mb7137", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 	{},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) MODULE_DEVICE_TABLE(of, of_mb1232_match);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) static const struct i2c_device_id mb1232_id[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 	{ "maxbotix-mb1202", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 	{ "maxbotix-mb1212", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 	{ "maxbotix-mb1222", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 	{ "maxbotix-mb1232", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 	{ "maxbotix-mb1242", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 	{ "maxbotix-mb7040", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 	{ "maxbotix-mb7137", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 	{ }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) MODULE_DEVICE_TABLE(i2c, mb1232_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) static struct i2c_driver mb1232_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 	.driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 		.name	= "maxbotix-mb1232",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 		.of_match_table	= of_mb1232_match,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 	.probe = mb1232_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 	.id_table = mb1232_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) module_i2c_driver(mb1232_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) MODULE_AUTHOR("Andreas Klinger <ak@it-klinger.de>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) MODULE_DESCRIPTION("Maxbotix I2CXL-MaxSonar i2c ultrasonic ranger driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) MODULE_LICENSE("GPL");