drivers/input/misc/ad714x.h

   1 /*
   2  * AD714X CapTouch Programmable Controller driver (bus interfaces)
   3  *
   4  * Copyright 2009-2011 Analog Devices Inc.
   5  *
   6  * Licensed under the GPL-2 or later.
   7  */
   8
   9 #ifndef _AD714X_H_
  10 #define _AD714X_H_
  11
  12 #include <linux/types.h>
  13
  14 #define STAGE_NUM              12
  15
  16 struct device;
  17 struct ad714x_platform_data;
  18 struct ad714x_driver_data;
  19 struct ad714x_chip;
  20
  21 typedef int (*ad714x_read_t)(struct ad714x_chip *, unsigned short, unsigned short *, size_t);
  22 typedef int (*ad714x_write_t)(struct ad714x_chip *, unsigned short, unsigned short);
  23
  24 struct ad714x_chip {
  25         unsigned short l_state;
  26         unsigned short h_state;
  27         unsigned short c_state;
  28         unsigned short adc_reg[STAGE_NUM];
  29         unsigned short amb_reg[STAGE_NUM];
  30         unsigned short sensor_val[STAGE_NUM];
  31
  32         struct ad714x_platform_data *hw;
  33         struct ad714x_driver_data *sw;
  34
  35         int irq;
  36         struct device *dev;
  37         ad714x_read_t read;
  38         ad714x_write_t write;
  39
  40         struct mutex mutex;
  41
  42         unsigned product;
  43         unsigned version;
  44
  45         __be16 xfer_buf[16] ____cacheline_aligned;
  46
  47 };
  48
  49 int ad714x_disable(struct ad714x_chip *ad714x);
  50 int ad714x_enable(struct ad714x_chip *ad714x);
  51 struct ad714x_chip *ad714x_probe(struct device *dev, u16 bus_type, int irq,
  52                                  ad714x_read_t read, ad714x_write_t write);
  53
  54 #endif