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  */
17 struct 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  */
27 struct 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 */
53 struct 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 
65 struct 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 
147