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