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 			      const 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);
80 extern int ili9320_resume(struct ili9320 *lcd);
81