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
13struct gpio_desc;
14
15#define LCCR0           0x0000          /* LCD Control Reg. 0 */
16#define LCSR            0x0004          /* LCD Status Reg. */
17#define DBAR1           0x0010          /* LCD DMA Base Address Reg. channel 1 */
18#define DCAR1           0x0014          /* LCD DMA Current Address Reg. channel 1 */
19#define DBAR2           0x0018          /* LCD DMA Base Address Reg.  channel 2 */
20#define DCAR2           0x001C          /* LCD DMA Current Address Reg. channel 2 */
21#define LCCR1           0x0020          /* LCD Control Reg. 1 */
22#define LCCR2           0x0024          /* LCD Control Reg. 2 */
23#define LCCR3           0x0028          /* LCD Control Reg. 3 */
24
25/* Shadows for LCD controller registers */
26struct sa1100fb_lcd_reg {
27	unsigned long lccr0;
28	unsigned long lccr1;
29	unsigned long lccr2;
30	unsigned long lccr3;
31};
32
33struct sa1100fb_info {
34	struct fb_info		fb;
35	struct device		*dev;
36	const struct sa1100fb_rgb *rgb[NR_RGB];
37	void __iomem		*base;
38	struct gpio_desc	*shannon_lcden;
39
40	/*
41	 * These are the addresses we mapped
42	 * the framebuffer memory region to.
43	 */
44	dma_addr_t		map_dma;
45	u_char *		map_cpu;
46	u_int			map_size;
47
48	u_char *		screen_cpu;
49	dma_addr_t		screen_dma;
50	u16 *			palette_cpu;
51	dma_addr_t		palette_dma;
52	u_int			palette_size;
53
54	dma_addr_t		dbar1;
55	dma_addr_t		dbar2;
56
57	u_int			reg_lccr0;
58	u_int			reg_lccr1;
59	u_int			reg_lccr2;
60	u_int			reg_lccr3;
61
62	volatile u_char		state;
63	volatile u_char		task_state;
64	struct mutex		ctrlr_lock;
65	wait_queue_head_t	ctrlr_wait;
66	struct work_struct	task;
67
68#ifdef CONFIG_CPU_FREQ
69	struct notifier_block	freq_transition;
70#endif
71
72	const struct sa1100fb_mach_info *inf;
73	struct clk *clk;
74
75	u32 pseudo_palette[16];
76};
77
78#define TO_INF(ptr,member)	container_of(ptr,struct sa1100fb_info,member)
79
80#define SA1100_PALETTE_MODE_VAL(bpp)    (((bpp) & 0x018) << 9)
81
82/*
83 * These are the actions for set_ctrlr_state
84 */
85#define C_DISABLE		(0)
86#define C_ENABLE		(1)
87#define C_DISABLE_CLKCHANGE	(2)
88#define C_ENABLE_CLKCHANGE	(3)
89#define C_REENABLE		(4)
90#define C_DISABLE_PM		(5)
91#define C_ENABLE_PM		(6)
92#define C_STARTUP		(7)
93
94#define SA1100_NAME	"SA1100"
95
96/*
97 * Minimum X and Y resolutions
98 */
99#define MIN_XRES	64
100#define MIN_YRES	64
101
102