diff options
Diffstat (limited to 'drivers/staging/iio/adc/ad7606.h')
| -rw-r--r-- | drivers/staging/iio/adc/ad7606.h | 106 |
1 files changed, 0 insertions, 106 deletions
diff --git a/drivers/staging/iio/adc/ad7606.h b/drivers/staging/iio/adc/ad7606.h deleted file mode 100644 index 86188054b60b..000000000000 --- a/drivers/staging/iio/adc/ad7606.h +++ /dev/null @@ -1,106 +0,0 @@ -/* - * AD7606 ADC driver - * - * Copyright 2011 Analog Devices Inc. - * - * Licensed under the GPL-2. - */ - -#ifndef IIO_ADC_AD7606_H_ -#define IIO_ADC_AD7606_H_ - -/** - * struct ad7606_chip_info - chip specific information - * @channels: channel specification - * @num_channels: number of channels - * @has_oversampling: whether the device has oversampling support - */ - -struct ad7606_chip_info { - const struct iio_chan_spec *channels; - unsigned int num_channels; - bool has_oversampling; -}; - -/** - * struct ad7606_state - driver instance specific data - * @dev pointer to kernel device - * @chip_info entry in the table of chips that describes this device - * @reg regulator info for the the power supply of the device - * @poll_work work struct for continuously reading data from the device - * into an IIO triggered buffer - * @wq_data_avail wait queue struct for buffer mode - * @bops bus operations (SPI or parallel) - * @range voltage range selection, selects which scale to apply - * @oversampling oversampling selection - * @done marks whether reading data is done - * @base_address address from where to read data in parallel operation - * @lock protect sensor state from concurrent accesses to GPIOs - * @gpio_convst GPIO descriptor for conversion start signal (CONVST) - * @gpio_reset GPIO descriptor for device hard-reset - * @gpio_range GPIO descriptor for range selection - * @gpio_standby GPIO descriptor for stand-by signal (STBY), - * controls power-down mode of device - * @gpio_frstdata GPIO descriptor for reading from device when data - * is being read on the first channel - * @gpio_os GPIO descriptors to control oversampling on the device - * @data buffer for reading data from the device - */ - -struct ad7606_state { - struct device *dev; - const struct ad7606_chip_info *chip_info; - struct regulator *reg; - struct work_struct poll_work; - wait_queue_head_t wq_data_avail; - const struct ad7606_bus_ops *bops; - unsigned int range; - unsigned int oversampling; - bool done; - void __iomem *base_address; - - struct mutex lock; /* protect sensor state */ - struct gpio_desc *gpio_convst; - struct gpio_desc *gpio_reset; - struct gpio_desc *gpio_range; - struct gpio_desc *gpio_standby; - struct gpio_desc *gpio_frstdata; - struct gpio_descs *gpio_os; - - /* - * DMA (thus cache coherency maintenance) requires the - * transfer buffers to live in their own cache lines. - * 8 * 16-bit samples + 64-bit timestamp - */ - unsigned short data[12] ____cacheline_aligned; -}; - -/** - * struct ad7606_bus_ops - driver bus operations - * @read_block function pointer for reading blocks of data - */ -struct ad7606_bus_ops { - /* more methods added in future? */ - int (*read_block)(struct device *dev, int num, void *data); -}; - -int ad7606_probe(struct device *dev, int irq, void __iomem *base_address, - const char *name, unsigned int id, - const struct ad7606_bus_ops *bops); -int ad7606_remove(struct device *dev, int irq); - -enum ad7606_supported_device_ids { - ID_AD7605_4, - ID_AD7606_8, - ID_AD7606_6, - ID_AD7606_4 -}; - -#ifdef CONFIG_PM_SLEEP -extern const struct dev_pm_ops ad7606_pm_ops; -#define AD7606_PM_OPS (&ad7606_pm_ops) -#else -#define AD7606_PM_OPS NULL -#endif - -#endif /* IIO_ADC_AD7606_H_ */ |