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Commit b155498b authored by Jonathan Cameron's avatar Jonathan Cameron Committed by Greg Kroah-Hartman
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staging: iio: adis16400 clean out some unused code 



Signed-off-by: default avatarJonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent e5107fb8

drivers/staging/iio/imu/adis16400.h

+0 −9
Original line number Diff line number Diff line
@@ -147,21 +147,12 @@ struct adis16400_state { 
	struct mutex			buf_lock;

};



int adis16400_spi_write_reg_8(struct device *dev,

			      u8 reg_address,

			      u8 val);



int adis16400_spi_read_burst(struct device *dev, u8 *rx);



int adis16400_spi_read_sequence(struct device *dev,

				      u8 *tx, u8 *rx, int num);



int adis16400_set_irq(struct device *dev, bool enable);



int adis16400_reset(struct device *dev);



int adis16400_stop_device(struct device *dev);



int adis16400_check_status(struct device *dev);



#ifdef CONFIG_IIO_RING_BUFFER

drivers/staging/iio/imu/adis16400_core.c

+3 −52
Original line number Diff line number Diff line
@@ -47,7 +47,7 @@ 
 * @reg_address: the address of the register to be written

 * @val: the value to write

 **/

int adis16400_spi_write_reg_8(struct device *dev,

static int adis16400_spi_write_reg_8(struct device *dev,

		u8 reg_address,

		u8 val)

{
@@ -209,55 +209,6 @@ int adis16400_spi_read_burst(struct device *dev, u8 *rx) 
	return ret;

}



/**

 * adis16400_spi_read_sequence() - read a sequence of 16-bit registers

 * @dev: device associated with child of actual device (iio_dev or iio_trig)

 * @tx: register addresses in bytes 0,2,4,6... (min size is 2*num bytes)

 * @rx: somewhere to pass back the value read (min size is 2*num bytes)

 **/

int adis16400_spi_read_sequence(struct device *dev,

		u8 *tx, u8 *rx, int num)

{

	struct spi_message msg;

	struct spi_transfer *xfers;

	struct iio_dev *indio_dev = dev_get_drvdata(dev);

	struct adis16400_state *st = iio_dev_get_devdata(indio_dev);

	int ret, i;



	xfers = kzalloc(num + 1, GFP_KERNEL);

	if (xfers == NULL) {

		dev_err(&st->us->dev, "memory alloc failed");

		ret = -ENOMEM;

		goto error_ret;

	}



	/* tx: |add1|addr2|addr3|...|addrN |zero|

	 * rx: |zero|res1 |res2 |...|resN-1|resN| */

	spi_message_init(&msg);

	for (i = 0; i < num + 1; i++) {

		if (i > 0)

			xfers[i].rx_buf = st->rx + 2*(i - 1);

		if (i < num)

			xfers[i].tx_buf = st->tx + 2*i;

		xfers[i].bits_per_word = 8;

		xfers[i].len = 2;

		xfers[i].cs_change = 1;

		spi_message_add_tail(&xfers[i], &msg);

	}



	mutex_lock(&st->buf_lock);



	ret = spi_sync(st->us, &msg);

	if (ret)

		dev_err(&st->us->dev, "problem when reading sequence");



	mutex_unlock(&st->buf_lock);

	kfree(xfers);



error_ret:

	return ret;

}



static ssize_t adis16400_spi_read_signed(struct device *dev,

		struct device_attribute *attr,

		char *buf,
@@ -450,7 +401,7 @@ int adis16400_reset(struct device *dev) 
}



/* Power down the device */

int adis16400_stop_device(struct device *dev)

static int adis16400_stop_device(struct device *dev)

{

	int ret;

	u16 val = ADIS16400_SLP_CNT_POWER_OFF;
@@ -462,7 +413,7 @@ int adis16400_stop_device(struct device *dev) 
	return ret;

}



int adis16400_self_test(struct device *dev)

static int adis16400_self_test(struct device *dev)

{

	int ret;

	ret = adis16400_spi_write_reg_16(dev,