xref: /linux/drivers/video/fbdev/pxafb.h (revision 976e3645923bdd2fe7893aae33fd7a21098bfb28)
1 #ifndef __PXAFB_H__
2 #define __PXAFB_H__
3 
4 /*
5  * linux/drivers/video/pxafb.h
6  *    -- Intel PXA250/210 LCD Controller Frame Buffer Device
7  *
8  *  Copyright (C) 1999 Eric A. Thomas.
9  *  Copyright (C) 2004 Jean-Frederic Clere.
10  *  Copyright (C) 2004 Ian Campbell.
11  *  Copyright (C) 2004 Jeff Lackey.
12  *   Based on sa1100fb.c Copyright (C) 1999 Eric A. Thomas
13  *  which in turn is
14  *   Based on acornfb.c Copyright (C) Russell King.
15  *
16  *  2001-08-03: Cliff Brake <cbrake@acclent.com>
17  *	 - ported SA1100 code to PXA
18  *
19  * This file is subject to the terms and conditions of the GNU General Public
20  * License.  See the file COPYING in the main directory of this archive
21  * for more details.
22  */
23 
24 /* PXA LCD DMA descriptor */
25 struct pxafb_dma_descriptor {
26 	unsigned int fdadr;
27 	unsigned int fsadr;
28 	unsigned int fidr;
29 	unsigned int ldcmd;
30 };
31 
32 enum {
33 	PAL_NONE	= -1,
34 	PAL_BASE	= 0,
35 	PAL_OV1		= 1,
36 	PAL_OV2		= 2,
37 	PAL_MAX,
38 };
39 
40 enum {
41 	DMA_BASE	= 0,
42 	DMA_UPPER	= 0,
43 	DMA_LOWER	= 1,
44 	DMA_OV1		= 1,
45 	DMA_OV2_Y	= 2,
46 	DMA_OV2_Cb	= 3,
47 	DMA_OV2_Cr	= 4,
48 	DMA_CURSOR	= 5,
49 	DMA_CMD		= 6,
50 	DMA_MAX,
51 };
52 
53 /* maximum palette size - 256 entries, each 4 bytes long */
54 #define PALETTE_SIZE	(256 * 4)
55 #define CMD_BUFF_SIZE	(1024 * 50)
56 
57 /* NOTE: the palette and frame dma descriptors are doubled to allow
58  * the 2nd set for branch settings (FBRx)
59  */
60 struct pxafb_dma_buff {
61 	unsigned char palette[PAL_MAX * PALETTE_SIZE];
62 	uint16_t cmd_buff[CMD_BUFF_SIZE];
63 	struct pxafb_dma_descriptor pal_desc[PAL_MAX * 2];
64 	struct pxafb_dma_descriptor dma_desc[DMA_MAX * 2];
65 };
66 
67 enum {
68 	OVERLAY1,
69 	OVERLAY2,
70 };
71 
72 enum {
73 	OVERLAY_FORMAT_RGB = 0,
74 	OVERLAY_FORMAT_YUV444_PACKED,
75 	OVERLAY_FORMAT_YUV444_PLANAR,
76 	OVERLAY_FORMAT_YUV422_PLANAR,
77 	OVERLAY_FORMAT_YUV420_PLANAR,
78 };
79 
80 #define NONSTD_TO_XPOS(x)	(((x) >> 0)  & 0x3ff)
81 #define NONSTD_TO_YPOS(x)	(((x) >> 10) & 0x3ff)
82 #define NONSTD_TO_PFOR(x)	(((x) >> 20) & 0x7)
83 
84 struct pxafb_layer;
85 
86 struct pxafb_layer_ops {
87 	void (*enable)(struct pxafb_layer *);
88 	void (*disable)(struct pxafb_layer *);
89 	void (*setup)(struct pxafb_layer *);
90 };
91 
92 struct pxafb_layer {
93 	struct fb_info		fb;
94 	int			id;
95 	int			registered;
96 	uint32_t		usage;
97 	uint32_t		control[2];
98 
99 	struct pxafb_layer_ops	*ops;
100 
101 	void __iomem		*video_mem;
102 	unsigned long		video_mem_phys;
103 	size_t			video_mem_size;
104 	struct completion	branch_done;
105 
106 	struct pxafb_info	*fbi;
107 };
108 
109 struct pxafb_info {
110 	struct fb_info		fb;
111 	struct device		*dev;
112 	struct clk		*clk;
113 
114 	void __iomem		*mmio_base;
115 
116 	struct pxafb_dma_buff	*dma_buff;
117 	size_t			dma_buff_size;
118 	dma_addr_t		dma_buff_phys;
119 	dma_addr_t		fdadr[DMA_MAX * 2];
120 
121 	void __iomem		*video_mem;	/* virtual address of frame buffer */
122 	unsigned long		video_mem_phys;	/* physical address of frame buffer */
123 	size_t			video_mem_size;	/* size of the frame buffer */
124 	u16 *			palette_cpu;	/* virtual address of palette memory */
125 	u_int			palette_size;
126 
127 	u_int			lccr0;
128 	u_int			lccr3;
129 	u_int			lccr4;
130 	u_int			cmap_inverse:1,
131 				cmap_static:1,
132 				unused:30;
133 
134 	u_int			reg_lccr0;
135 	u_int			reg_lccr1;
136 	u_int			reg_lccr2;
137 	u_int			reg_lccr3;
138 	u_int			reg_lccr4;
139 	u_int			reg_cmdcr;
140 
141 	unsigned long	hsync_time;
142 
143 	volatile u_char		state;
144 	volatile u_char		task_state;
145 	struct mutex		ctrlr_lock;
146 	wait_queue_head_t	ctrlr_wait;
147 	struct work_struct	task;
148 
149 	struct completion	disable_done;
150 
151 #ifdef CONFIG_FB_PXA_SMARTPANEL
152 	uint16_t		*smart_cmds;
153 	size_t			n_smart_cmds;
154 	struct completion	command_done;
155 	struct completion	refresh_done;
156 	struct task_struct	*smart_thread;
157 #endif
158 
159 #ifdef CONFIG_FB_PXA_OVERLAY
160 	struct pxafb_layer	overlay[2];
161 #endif
162 
163 #ifdef CONFIG_CPU_FREQ
164 	struct notifier_block	freq_transition;
165 #endif
166 
167 	struct regulator *lcd_supply;
168 	bool lcd_supply_enabled;
169 
170 	void (*lcd_power)(int, struct fb_var_screeninfo *);
171 	void (*backlight_power)(int);
172 
173 	struct pxafb_mach_info	*inf;
174 };
175 
176 #define TO_INF(ptr,member) container_of(ptr,struct pxafb_info,member)
177 
178 /*
179  * These are the actions for set_ctrlr_state
180  */
181 #define C_DISABLE		(0)
182 #define C_ENABLE		(1)
183 #define C_DISABLE_CLKCHANGE	(2)
184 #define C_ENABLE_CLKCHANGE	(3)
185 #define C_REENABLE		(4)
186 #define C_DISABLE_PM		(5)
187 #define C_ENABLE_PM		(6)
188 #define C_STARTUP		(7)
189 
190 #define PXA_NAME	"PXA"
191 
192 /*
193  * Minimum X and Y resolutions
194  */
195 #define MIN_XRES	64
196 #define MIN_YRES	64
197 
198 /* maximum X and Y resolutions - note these are limits from the register
199  * bits length instead of the real ones
200  */
201 #define MAX_XRES	1024
202 #define MAX_YRES	1024
203 
204 #endif /* __PXAFB_H__ */
205