From 8d016b43c99a2fa8d415cc4fb042c7177098812c Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Fri, 11 Feb 2011 14:20:01 +0000 Subject: [PATCH] staging:iio:gyro:adis16080 unused stub removal and cleanup Signed-off-by: Jonathan Cameron Signed-off-by: Greg Kroah-Hartman --- drivers/staging/iio/gyro/adis16080.h | 84 +++-------------------- drivers/staging/iio/gyro/adis16080_core.c | 54 ++------------- 2 files changed, 14 insertions(+), 124 deletions(-) diff --git a/drivers/staging/iio/gyro/adis16080.h b/drivers/staging/iio/gyro/adis16080.h index 3fcbe67f7c31..f4e38510ec46 100644 --- a/drivers/staging/iio/gyro/adis16080.h +++ b/drivers/staging/iio/gyro/adis16080.h @@ -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_ */ diff --git a/drivers/staging/iio/gyro/adis16080_core.c b/drivers/staging/iio/gyro/adis16080_core.c index 0efb768db7d3..252080b238e8 100644 --- a/drivers/staging/iio/gyro/adis16080_core.c +++ b/drivers/staging/iio/gyro/adis16080_core.c @@ -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"); -- 2.39.5