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. */
16struct ili9320_reg {
17	unsigned short		address;
18	unsigned short		value;
19};
20
21struct ili9320;
22
23struct 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. */
29struct  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. */
40struct 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
62extern int ili9320_write(struct ili9320 *ili,
63			 unsigned int reg, unsigned int value);
64
65extern int ili9320_write_regs(struct ili9320 *ili,
66			      struct ili9320_reg *values,
67			      int nr_values);
68
69/* Device probe */
70
71extern int ili9320_probe_spi(struct spi_device *spi,
72			     struct ili9320_client *cli);
73
74extern int ili9320_remove(struct ili9320 *lcd);
75extern void ili9320_shutdown(struct ili9320 *lcd);
76
77/* PM */
78
79extern int ili9320_suspend(struct ili9320 *lcd, pm_message_t state);
80extern int ili9320_resume(struct ili9320 *lcd);
81