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1/*
2 * Copyright 2008 Freescale Semiconductor, Inc. All Rights Reserved.
3 *
4 * Freescale DIU Frame Buffer device driver
5 *
6 * Authors: Hongjun Chen <hong-jun.chen@freescale.com>
7 * Paul Widmer <paul.widmer@freescale.com>
8 * Srikanth Srinivasan <srikanth.srinivasan@freescale.com>
9 * York Sun <yorksun@freescale.com>
10 *
11 * Based on imxfb.c Copyright (C) 2004 S.Hauer, Pengutronix
12 *
13 * This program is free software; you can redistribute it and/or modify it
14 * under the terms of the GNU General Public License as published by the
15 * Free Software Foundation; either version 2 of the License, or (at your
16 * option) any later version.
17 *
18 */
19
20#ifndef __FSL_DIU_FB_H__
21#define __FSL_DIU_FB_H__
22
23/* Arbitrary threshold to determine the allocation method
24 * See mpc8610fb_set_par(), map_video_memory(), and unmap_video_memory()
25 */
26#define MEM_ALLOC_THRESHOLD (1024*768*4+32)
27/* Minimum value that the pixel clock can be set to in pico seconds
28 * This is determined by platform clock/3 where the minimum platform
29 * clock is 533MHz. This gives 5629 pico seconds.
30 */
31#define MIN_PIX_CLK 5629
32#define MAX_PIX_CLK 96096
33
34#include <linux/types.h>
35
36struct mfb_alpha {
37 int enable;
38 int alpha;
39};
40
41struct mfb_chroma_key {
42 int enable;
43 __u8 red_max;
44 __u8 green_max;
45 __u8 blue_max;
46 __u8 red_min;
47 __u8 green_min;
48 __u8 blue_min;
49};
50
51struct aoi_display_offset {
52 int x_aoi_d;
53 int y_aoi_d;
54};
55
56#define MFB_SET_CHROMA_KEY _IOW('M', 1, struct mfb_chroma_key)
57#define MFB_WAIT_FOR_VSYNC _IOW('F', 0x20, u_int32_t)
58#define MFB_SET_BRIGHTNESS _IOW('M', 3, __u8)
59
60#define MFB_SET_ALPHA 0x80014d00
61#define MFB_GET_ALPHA 0x40014d00
62#define MFB_SET_AOID 0x80084d04
63#define MFB_GET_AOID 0x40084d04
64#define MFB_SET_PIXFMT 0x80014d08
65#define MFB_GET_PIXFMT 0x40014d08
66
67#define FBIOGET_GWINFO 0x46E0
68#define FBIOPUT_GWINFO 0x46E1
69
70#ifdef __KERNEL__
71#include <linux/spinlock.h>
72
73/*
74 * These are the fields of area descriptor(in DDR memory) for every plane
75 */
76struct diu_ad {
77 /* Word 0(32-bit) in DDR memory */
78/* __u16 comp; */
79/* __u16 pixel_s:2; */
80/* __u16 pallete:1; */
81/* __u16 red_c:2; */
82/* __u16 green_c:2; */
83/* __u16 blue_c:2; */
84/* __u16 alpha_c:3; */
85/* __u16 byte_f:1; */
86/* __u16 res0:3; */
87
88 __be32 pix_fmt; /* hard coding pixel format */
89
90 /* Word 1(32-bit) in DDR memory */
91 __le32 addr;
92
93 /* Word 2(32-bit) in DDR memory */
94/* __u32 delta_xs:11; */
95/* __u32 res1:1; */
96/* __u32 delta_ys:11; */
97/* __u32 res2:1; */
98/* __u32 g_alpha:8; */
99 __le32 src_size_g_alpha;
100
101 /* Word 3(32-bit) in DDR memory */
102/* __u32 delta_xi:11; */
103/* __u32 res3:5; */
104/* __u32 delta_yi:11; */
105/* __u32 res4:3; */
106/* __u32 flip:2; */
107 __le32 aoi_size;
108
109 /* Word 4(32-bit) in DDR memory */
110 /*__u32 offset_xi:11;
111 __u32 res5:5;
112 __u32 offset_yi:11;
113 __u32 res6:5;
114 */
115 __le32 offset_xyi;
116
117 /* Word 5(32-bit) in DDR memory */
118 /*__u32 offset_xd:11;
119 __u32 res7:5;
120 __u32 offset_yd:11;
121 __u32 res8:5; */
122 __le32 offset_xyd;
123
124
125 /* Word 6(32-bit) in DDR memory */
126 __u8 ckmax_r;
127 __u8 ckmax_g;
128 __u8 ckmax_b;
129 __u8 res9;
130
131 /* Word 7(32-bit) in DDR memory */
132 __u8 ckmin_r;
133 __u8 ckmin_g;
134 __u8 ckmin_b;
135 __u8 res10;
136/* __u32 res10:8; */
137
138 /* Word 8(32-bit) in DDR memory */
139 __le32 next_ad;
140
141 /* Word 9(32-bit) in DDR memory, just for 64-bit aligned */
142 __u32 paddr;
143} __attribute__ ((packed));
144
145/* DIU register map */
146struct diu {
147 __be32 desc[3];
148 __be32 gamma;
149 __be32 pallete;
150 __be32 cursor;
151 __be32 curs_pos;
152 __be32 diu_mode;
153 __be32 bgnd;
154 __be32 bgnd_wb;
155 __be32 disp_size;
156 __be32 wb_size;
157 __be32 wb_mem_addr;
158 __be32 hsyn_para;
159 __be32 vsyn_para;
160 __be32 syn_pol;
161 __be32 thresholds;
162 __be32 int_status;
163 __be32 int_mask;
164 __be32 colorbar[8];
165 __be32 filling;
166 __be32 plut;
167} __attribute__ ((packed));
168
169struct diu_hw {
170 struct diu *diu_reg;
171 spinlock_t reg_lock;
172
173 __u32 mode; /* DIU operation mode */
174};
175
176struct diu_addr {
177 __u8 __iomem *vaddr; /* Virtual address */
178 dma_addr_t paddr; /* Physical address */
179 __u32 offset;
180};
181
182struct diu_pool {
183 struct diu_addr ad;
184 struct diu_addr gamma;
185 struct diu_addr pallete;
186 struct diu_addr cursor;
187};
188
189#define FSL_DIU_BASE_OFFSET 0x2C000 /* Offset of DIU */
190#define INT_LCDC 64 /* DIU interrupt number */
191
192#define FSL_AOI_NUM 6 /* 5 AOIs and one dummy AOI */
193 /* 1 for plane 0, 2 for plane 1&2 each */
194
195/* Minimum X and Y resolutions */
196#define MIN_XRES 64
197#define MIN_YRES 64
198
199/* HW cursor parameters */
200#define MAX_CURS 32
201
202/* Modes of operation of DIU */
203#define MFB_MODE0 0 /* DIU off */
204#define MFB_MODE1 1 /* All three planes output to display */
205#define MFB_MODE2 2 /* Plane 1 to display, planes 2+3 written back*/
206#define MFB_MODE3 3 /* All three planes written back to memory */
207#define MFB_MODE4 4 /* Color bar generation */
208
209/* INT_STATUS/INT_MASK field descriptions */
210#define INT_VSYNC 0x01 /* Vsync interrupt */
211#define INT_VSYNC_WB 0x02 /* Vsync interrupt for write back operation */
212#define INT_UNDRUN 0x04 /* Under run exception interrupt */
213#define INT_PARERR 0x08 /* Display parameters error interrupt */
214#define INT_LS_BF_VS 0x10 /* Lines before vsync. interrupt */
215
216/* Panels'operation modes */
217#define MFB_TYPE_OUTPUT 0 /* Panel output to display */
218#define MFB_TYPE_OFF 1 /* Panel off */
219#define MFB_TYPE_WB 2 /* Panel written back to memory */
220#define MFB_TYPE_TEST 3 /* Panel generate color bar */
221
222#endif /* __KERNEL__ */
223#endif /* __FSL_DIU_FB_H__ */
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