tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * linux/drivers/video/sa1100fb.h
3 * -- StrongARM 1100 LCD Controller Frame Buffer Device
4 *
5 * Copyright (C) 1999 Eric A. Thomas
6 * Based on acornfb.c Copyright (C) Russell King.
7 *
8 * This file is subject to the terms and conditions of the GNU General Public
9 * License. See the file COPYING in the main directory of this archive
10 * for more details.
11 */
12
13/*
14 * These are the bitfields for each
15 * display depth that we support.
16 */
17struct sa1100fb_rgb {
18 struct fb_bitfield red;
19 struct fb_bitfield green;
20 struct fb_bitfield blue;
21 struct fb_bitfield transp;
22};
23
24/*
25 * This structure describes the machine which we are running on.
26 */
27struct sa1100fb_mach_info {
28 u_long pixclock;
29
30 u_short xres;
31 u_short yres;
32
33 u_char bpp;
34 u_char hsync_len;
35 u_char left_margin;
36 u_char right_margin;
37
38 u_char vsync_len;
39 u_char upper_margin;
40 u_char lower_margin;
41 u_char sync;
42
43 u_int cmap_greyscale:1,
44 cmap_inverse:1,
45 cmap_static:1,
46 unused:29;
47
48 u_int lccr0;
49 u_int lccr3;
50};
51
52/* Shadows for LCD controller registers */
53struct sa1100fb_lcd_reg {
54 unsigned long lccr0;
55 unsigned long lccr1;
56 unsigned long lccr2;
57 unsigned long lccr3;
58};
59
60#define RGB_4 (0)
61#define RGB_8 (1)
62#define RGB_16 (2)
63#define NR_RGB 3
64
65struct sa1100fb_info {
66 struct fb_info fb;
67 struct device *dev;
68 struct sa1100fb_rgb *rgb[NR_RGB];
69
70 u_int max_bpp;
71 u_int max_xres;
72 u_int max_yres;
73
74 /*
75 * These are the addresses we mapped
76 * the framebuffer memory region to.
77 */
78 dma_addr_t map_dma;
79 u_char * map_cpu;
80 u_int map_size;
81
82 u_char * screen_cpu;
83 dma_addr_t screen_dma;
84 u16 * palette_cpu;
85 dma_addr_t palette_dma;
86 u_int palette_size;
87
88 dma_addr_t dbar1;
89 dma_addr_t dbar2;
90
91 u_int lccr0;
92 u_int lccr3;
93 u_int cmap_inverse:1,
94 cmap_static:1,
95 unused:30;
96
97 u_int reg_lccr0;
98 u_int reg_lccr1;
99 u_int reg_lccr2;
100 u_int reg_lccr3;
101
102 volatile u_char state;
103 volatile u_char task_state;
104 struct mutex ctrlr_lock;
105 wait_queue_head_t ctrlr_wait;
106 struct work_struct task;
107
108#ifdef CONFIG_CPU_FREQ
109 struct notifier_block freq_transition;
110 struct notifier_block freq_policy;
111#endif
112};
113
114#define TO_INF(ptr,member) container_of(ptr,struct sa1100fb_info,member)
115
116#define SA1100_PALETTE_MODE_VAL(bpp) (((bpp) & 0x018) << 9)
117
118/*
119 * These are the actions for set_ctrlr_state
120 */
121#define C_DISABLE (0)
122#define C_ENABLE (1)
123#define C_DISABLE_CLKCHANGE (2)
124#define C_ENABLE_CLKCHANGE (3)
125#define C_REENABLE (4)
126#define C_DISABLE_PM (5)
127#define C_ENABLE_PM (6)
128#define C_STARTUP (7)
129
130#define SA1100_NAME "SA1100"
131
132/*
133 * Debug macros
134 */
135#if DEBUG
136# define DPRINTK(fmt, args...) printk("%s: " fmt, __func__ , ## args)
137#else
138# define DPRINTK(fmt, args...)
139#endif
140
141/*
142 * Minimum X and Y resolutions
143 */
144#define MIN_XRES 64
145#define MIN_YRES 64
146