1/* SPDX-License-Identifier: GPL-2.0-only */
2/* drivers/video/backlight/ili9320.h
3 *
4 * ILI9320 LCD controller driver core.
5 *
6 * Copyright 2007 Simtec Electronics
7 *	Ben Dooks <ben@simtec.co.uk>
8 *
9 * http://armlinux.simtec.co.uk/
10*/
11
12/* Holder for register and value pairs. */
13struct ili9320_reg {
14	unsigned short		address;
15	unsigned short		value;
16};
17
18struct ili9320;
19
20struct ili9320_client {
21	const char	*name;
22	int	(*init)(struct ili9320 *ili, struct ili9320_platdata *cfg);
23
24};
25/* Device attached via an SPI bus. */
26struct  ili9320_spi {
27	struct spi_device	*dev;
28	struct spi_message	message;
29	struct spi_transfer	xfer[2];
30
31	unsigned char		id;
32	unsigned char		buffer_addr[4];
33	unsigned char		buffer_data[4];
34};
35
36/* ILI9320 device state. */
37struct ili9320 {
38	union {
39		struct ili9320_spi	spi;	/* SPI attachged device. */
40	} access;				/* Register access method. */
41
42	struct device			*dev;
43	struct lcd_device		*lcd;	/* LCD device we created. */
44	struct ili9320_client		*client;
45	struct ili9320_platdata		*platdata;
46
47	int				 power; /* current power state. */
48	int				 initialised;
49
50	unsigned short			 display1;
51	unsigned short			 power1;
52
53	int (*write)(struct ili9320 *ili, unsigned int reg, unsigned int val);
54};
55
56
57/* ILI9320 register access routines */
58
59extern int ili9320_write(struct ili9320 *ili,
60			 unsigned int reg, unsigned int value);
61
62extern int ili9320_write_regs(struct ili9320 *ili,
63			      const struct ili9320_reg *values,
64			      int nr_values);
65
66/* Device probe */
67
68extern int ili9320_probe_spi(struct spi_device *spi,
69			     struct ili9320_client *cli);
70
71extern void ili9320_remove(struct ili9320 *lcd);
72extern void ili9320_shutdown(struct ili9320 *lcd);
73
74/* PM */
75
76extern int ili9320_suspend(struct ili9320 *lcd);
77extern int ili9320_resume(struct ili9320 *lcd);
78