xref: /openbmc/linux/drivers/video/fbdev/sa1100fb.h (revision 5e4096ef)
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 struct 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 */
26 struct sa1100fb_lcd_reg {
27 	unsigned long lccr0;
28 	unsigned long lccr1;
29 	unsigned long lccr2;
30 	unsigned long lccr3;
31 };
32 
33 struct 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