release/src-rt-6.x.4708/linux/linux-2.6.36/drivers/video/backlight/ili9320.h

   1 /* drivers/video/backlight/ili9320.h
   2  *
   3  * ILI9320 LCD controller driver core.
   4  *
   5  * Copyright 2007 Simtec Electronics
   6  *      Ben Dooks <ben@simtec.co.uk>
   7  *
   8  * http://armlinux.simtec.co.uk/
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as
  12  * published by the Free Software Foundation.
  13 */
  14
  15 /* Holder for register and value pairs. */
  16 struct ili9320_reg {
  17         unsigned short          address;
  18         unsigned short          value;
  19 };
  20
  21 struct ili9320;
  22
  23 struct ili9320_client {
  24         const char      *name;
  25         int     (*init)(struct ili9320 *ili, struct ili9320_platdata *cfg);
  26
  27 };
  28 /* Device attached via an SPI bus. */
  29 struct  ili9320_spi {
  30         struct spi_device       *dev;
  31         struct spi_message      message;
  32         struct spi_transfer     xfer[2];
  33
  34         unsigned char           id;
  35         unsigned char           buffer_addr[4];
  36         unsigned char           buffer_data[4];
  37 };
  38
  39 /* ILI9320 device state. */
  40 struct ili9320 {
  41         union {
  42                 struct ili9320_spi      spi;    /* SPI attachged device. */
  43         } access;                               /* Register access method. */
  44
  45         struct device                   *dev;
  46         struct lcd_device               *lcd;   /* LCD device we created. */
  47         struct ili9320_client           *client;
  48         struct ili9320_platdata         *platdata;
  49
  50         int                              power; /* current power state. */
  51         int                              initialised;
  52
  53         unsigned short                   display1;
  54         unsigned short                   power1;
  55
  56         int (*write)(struct ili9320 *ili, unsigned int reg, unsigned int val);
  57 };
  58
  59
  60 /* ILI9320 register access routines */
  61
  62 extern int ili9320_write(struct ili9320 *ili,
  63                          unsigned int reg, unsigned int value);
  64
  65 extern int ili9320_write_regs(struct ili9320 *ili,
  66                               struct ili9320_reg *values,
  67                               int nr_values);
  68
  69 /* Device probe */
  70
  71 extern int ili9320_probe_spi(struct spi_device *spi,
  72                              struct ili9320_client *cli);
  73
  74 extern int ili9320_remove(struct ili9320 *lcd);
  75 extern void ili9320_shutdown(struct ili9320 *lcd);
  76
  77 /* PM */
  78
  79 extern int ili9320_suspend(struct ili9320 *lcd, pm_message_t state);
  80 extern int ili9320_resume(struct ili9320 *lcd);