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staging:iio:gyro:adis16080 unused stub removal and cleanup 

Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Jonathan Cameron 2011-02-11 14:20:01 +00:00 committed by Greg Kroah-Hartman
parent d14ae859bb
commit 8d016b43c9
2 changed files with 14 additions and 124 deletions
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84
drivers/staging/iio/gyro/adis16080.h
View File

@ -1,14 +1,19 @@
#ifndef SPI_ADIS16080_H_
#define SPI_ADIS16080_H_
#define ADIS16080_DIN_CODE 4 /* Output data format setting. 0: Twos complement. 1: Offset binary. */
/* Output data format setting. 0: Twos complement. 1: Offset binary. */
#define ADIS16080_DIN_CODE 4
#define ADIS16080_DIN_GYRO (0 << 10) /* Gyroscope output */
#define ADIS16080_DIN_TEMP (1 << 10) /* Temperature output */
#define ADIS16080_DIN_AIN1 (2 << 10)
#define ADIS16080_DIN_AIN2 (3 << 10)
#define ADIS16080_DIN_WRITE (1 << 15) /* 1: Write contents on DIN to control register.
* 0: No changes to control register.
*/
/*
* 1: Write contents on DIN to control register.
* 0: No changes to control register.
*/
#define ADIS16080_DIN_WRITE (1 << 15)
#define ADIS16080_MAX_TX 2
#define ADIS16080_MAX_RX 2
@ -16,87 +21,16 @@
/**
* struct adis16080_state - device instance specific data
* @us: actual spi_device to write data
* @work_trigger_to_ring: bh for triggered event handling
* @inter: used to check if new interrupt has been triggered
* @last_timestamp: passing timestamp from th to bh of interrupt handler
* @indio_dev: industrial I/O device structure
* @trig: data ready trigger registered with iio
* @tx: transmit buffer
* @rx: recieve buffer
* @buf_lock: mutex to protect tx and rx
**/
struct adis16080_state {
struct spi_device *us;
struct work_struct work_trigger_to_ring;
s64 last_timestamp;
struct iio_dev *indio_dev;
struct iio_trigger *trig;
u8 *tx;
u8 *rx;
struct mutex buf_lock;
};
#if defined(CONFIG_IIO_RING_BUFFER) && defined(THIS_HAS_RING_BUFFER_SUPPORT)
/* At the moment triggers are only used for ring buffer
* filling. This may change!
*/
enum adis16080_scan {
ADIS16080_SCAN_GYRO,
ADIS16080_SCAN_TEMP,
ADIS16080_SCAN_ADC_1,
ADIS16080_SCAN_ADC_2,
};
void adis16080_remove_trigger(struct iio_dev *indio_dev);
int adis16080_probe_trigger(struct iio_dev *indio_dev);
ssize_t adis16080_read_data_from_ring(struct device *dev,
struct device_attribute *attr,
char *buf);
int adis16080_configure_ring(struct iio_dev *indio_dev);
void adis16080_unconfigure_ring(struct iio_dev *indio_dev);
int adis16080_initialize_ring(struct iio_ring_buffer *ring);
void adis16080_uninitialize_ring(struct iio_ring_buffer *ring);
#else /* CONFIG_IIO_RING_BUFFER */
static inline void adis16080_remove_trigger(struct iio_dev *indio_dev)
{
}
static inline int adis16080_probe_trigger(struct iio_dev *indio_dev)
{
return 0;
}
static inline ssize_t
adis16080_read_data_from_ring(struct device *dev,
struct device_attribute *attr,
char *buf)
{
return 0;
}
static int adis16080_configure_ring(struct iio_dev *indio_dev)
{
return 0;
}
static inline void adis16080_unconfigure_ring(struct iio_dev *indio_dev)
{
}
static inline int adis16080_initialize_ring(struct iio_ring_buffer *ring)
{
return 0;
}
static inline void adis16080_uninitialize_ring(struct iio_ring_buffer *ring)
{
}
#endif /* CONFIG_IIO_RING_BUFFER */
#endif /* SPI_ADIS16080_H_ */

54
drivers/staging/iio/gyro/adis16080_core.c
View File

@ -25,11 +25,7 @@
#include "adis16080.h"
#define DRIVER_NAME "adis16080"
struct adis16080_state *adis16080_st;
int adis16080_spi_write(struct device *dev,
static int adis16080_spi_write(struct device *dev,
u16 val)
{
int ret;
@ -46,7 +42,7 @@ int adis16080_spi_write(struct device *dev,
return ret;
}
int adis16080_spi_read(struct device *dev,
static int adis16080_spi_read(struct device *dev,
u16 *val)
{
int ret;
@ -69,7 +65,7 @@ static ssize_t adis16080_read(struct device *dev,
char *buf)
{
struct iio_dev *indio_dev = dev_get_drvdata(dev);
u16 val;
u16 val = 0;
ssize_t ret;
/* Take the iio_dev status lock */
@ -169,45 +165,13 @@ static int __devinit adis16080_probe(struct spi_device *spi)
st->indio_dev->driver_module = THIS_MODULE;
st->indio_dev->modes = INDIO_DIRECT_MODE;
ret = adis16080_configure_ring(st->indio_dev);
if (ret)
goto error_free_dev;
ret = iio_device_register(st->indio_dev);
if (ret)
goto error_unreg_ring_funcs;
goto error_free_dev;
regdone = 1;
ret = adis16080_initialize_ring(st->indio_dev->ring);
if (ret) {
printk(KERN_ERR "failed to initialize the ring\n");
goto error_unreg_ring_funcs;
}
if (spi->irq && gpio_is_valid(irq_to_gpio(spi->irq)) > 0) {
ret = iio_register_interrupt_line(spi->irq,
st->indio_dev,
0,
IRQF_TRIGGER_RISING,
"adis16080");
if (ret)
goto error_uninitialize_ring;
ret = adis16080_probe_trigger(st->indio_dev);
if (ret)
goto error_unregister_line;
}
adis16080_st = st;
return 0;
error_unregister_line:
if (st->indio_dev->modes & INDIO_RING_TRIGGERED)
iio_unregister_interrupt_line(st->indio_dev, 0);
error_uninitialize_ring:
adis16080_uninitialize_ring(st->indio_dev->ring);
error_unreg_ring_funcs:
adis16080_unconfigure_ring(st->indio_dev);
error_free_dev:
if (regdone)
iio_device_unregister(st->indio_dev);
@ -229,14 +193,6 @@ static int adis16080_remove(struct spi_device *spi)
struct adis16080_state *st = spi_get_drvdata(spi);
struct iio_dev *indio_dev = st->indio_dev;
flush_scheduled_work();
adis16080_remove_trigger(indio_dev);
if (spi->irq && gpio_is_valid(irq_to_gpio(spi->irq)) > 0)
iio_unregister_interrupt_line(indio_dev, 0);
adis16080_uninitialize_ring(indio_dev->ring);
adis16080_unconfigure_ring(indio_dev);
iio_device_unregister(indio_dev);
kfree(st->tx);
kfree(st->rx);
@ -267,5 +223,5 @@ static __exit void adis16080_exit(void)
module_exit(adis16080_exit);
MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
MODULE_DESCRIPTION("Analog Devices ADIS16080/100 Yaw Rate Gyroscope with SPI driver");
MODULE_DESCRIPTION("Analog Devices ADIS16080/100 Yaw Rate Gyroscope Driver");
MODULE_LICENSE("GPL v2");