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. */ |
13 | struct ili9320_reg { |
14 | unsigned short address; |
15 | unsigned short value; |
16 | }; |
17 | |
18 | struct ili9320; |
19 | |
20 | struct 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. */ |
26 | struct 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. */ |
37 | struct 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 | |
59 | extern int ili9320_write(struct ili9320 *ili, |
60 | unsigned int reg, unsigned int value); |
61 | |
62 | extern int ili9320_write_regs(struct ili9320 *ili, |
63 | const struct ili9320_reg *values, |
64 | int nr_values); |
65 | |
66 | /* Device probe */ |
67 | |
68 | extern int ili9320_probe_spi(struct spi_device *spi, |
69 | struct ili9320_client *cli); |
70 | |
71 | extern void ili9320_remove(struct ili9320 *lcd); |
72 | extern void ili9320_shutdown(struct ili9320 *lcd); |
73 | |
74 | /* PM */ |
75 | |
76 | extern int ili9320_suspend(struct ili9320 *lcd); |
77 | extern int ili9320_resume(struct ili9320 *lcd); |
78 | |