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

source code of linux/drivers/video/backlight/ili9320.h