1 /*
2 * linux/drivers/video/tgafb.h -- DEC 21030 TGA frame buffer device
3 *
4 * Copyright (C) 1999,2000 Martin Lucina, Tom Zerucha
5 *
6 * $Id: tgafb.h,v 1.4.2.3 2000/04/04 06:44:56 mato Exp $
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 for
10 * more details.
11 */
12
13 #ifndef TGAFB_H
14 #define TGAFB_H
15
16 /*
17 * TGA hardware description (minimal)
18 */
19
20 #define TGA_TYPE_8PLANE 0
21 #define TGA_TYPE_24PLANE 1
22 #define TGA_TYPE_24PLUSZ 3
23
24 /*
25 * Offsets within Memory Space
26 */
27
28 #define TGA_ROM_OFFSET 0x0000000
29 #define TGA_REGS_OFFSET 0x0100000
30 #define TGA_8PLANE_FB_OFFSET 0x0200000
31 #define TGA_24PLANE_FB_OFFSET 0x0804000
32 #define TGA_24PLUSZ_FB_OFFSET 0x1004000
33
34 #define TGA_FOREGROUND_REG 0x0020
35 #define TGA_BACKGROUND_REG 0x0024
36 #define TGA_PLANEMASK_REG 0x0028
37 #define TGA_PIXELMASK_ONESHOT_REG 0x002c
38 #define TGA_MODE_REG 0x0030
39 #define TGA_RASTEROP_REG 0x0034
40 #define TGA_PIXELSHIFT_REG 0x0038
41 #define TGA_DEEP_REG 0x0050
42 #define TGA_START_REG 0x0054
43 #define TGA_PIXELMASK_REG 0x005c
44 #define TGA_CURSOR_BASE_REG 0x0060
45 #define TGA_HORIZ_REG 0x0064
46 #define TGA_VERT_REG 0x0068
47 #define TGA_BASE_ADDR_REG 0x006c
48 #define TGA_VALID_REG 0x0070
49 #define TGA_CURSOR_XY_REG 0x0074
50 #define TGA_INTR_STAT_REG 0x007c
51 #define TGA_DATA_REG 0x0080
52 #define TGA_RAMDAC_SETUP_REG 0x00c0
53 #define TGA_BLOCK_COLOR0_REG 0x0140
54 #define TGA_BLOCK_COLOR1_REG 0x0144
55 #define TGA_BLOCK_COLOR2_REG 0x0148
56 #define TGA_BLOCK_COLOR3_REG 0x014c
57 #define TGA_BLOCK_COLOR4_REG 0x0150
58 #define TGA_BLOCK_COLOR5_REG 0x0154
59 #define TGA_BLOCK_COLOR6_REG 0x0158
60 #define TGA_BLOCK_COLOR7_REG 0x015c
61 #define TGA_COPY64_SRC 0x0160
62 #define TGA_COPY64_DST 0x0164
63 #define TGA_CLOCK_REG 0x01e8
64 #define TGA_RAMDAC_REG 0x01f0
65 #define TGA_CMD_STAT_REG 0x01f8
66
67
68 /*
69 * Useful defines for managing the registers
70 */
71
72 #define TGA_HORIZ_ODD 0x80000000
73 #define TGA_HORIZ_POLARITY 0x40000000
74 #define TGA_HORIZ_ACT_MSB 0x30000000
75 #define TGA_HORIZ_BP 0x0fe00000
76 #define TGA_HORIZ_SYNC 0x001fc000
77 #define TGA_HORIZ_FP 0x00007c00
78 #define TGA_HORIZ_ACT_LSB 0x000001ff
79
80 #define TGA_VERT_SE 0x80000000
81 #define TGA_VERT_POLARITY 0x40000000
82 #define TGA_VERT_RESERVED 0x30000000
83 #define TGA_VERT_BP 0x0fc00000
84 #define TGA_VERT_SYNC 0x003f0000
85 #define TGA_VERT_FP 0x0000f800
86 #define TGA_VERT_ACTIVE 0x000007ff
87
88 #define TGA_VALID_VIDEO 0x01
89 #define TGA_VALID_BLANK 0x02
90 #define TGA_VALID_CURSOR 0x04
91
92 #define TGA_MODE_SBM_8BPP 0x000
93 #define TGA_MODE_SBM_24BPP 0x300
94
95 #define TGA_MODE_SIMPLE 0x00
96 #define TGA_MODE_SIMPLEZ 0x10
97 #define TGA_MODE_OPAQUE_STIPPLE 0x01
98 #define TGA_MODE_OPAQUE_FILL 0x21
99 #define TGA_MODE_TRANSPARENT_STIPPLE 0x03
100 #define TGA_MODE_TRANSPARENT_FILL 0x23
101 #define TGA_MODE_BLOCK_STIPPLE 0x0d
102 #define TGA_MODE_BLOCK_FILL 0x2d
103 #define TGA_MODE_COPY 0x07
104 #define TGA_MODE_DMA_READ_COPY_ND 0x17
105 #define TGA_MODE_DMA_READ_COPY_D 0x37
106 #define TGA_MODE_DMA_WRITE_COPY 0x1f
107
108
109 /*
110 * Useful defines for managing the ICS1562 PLL clock
111 */
112
113 #define TGA_PLL_BASE_FREQ 14318 /* .18 */
114 #define TGA_PLL_MAX_FREQ 230000
115
116
117 /*
118 * Useful defines for managing the BT485 on the 8-plane TGA
119 */
120
121 #define BT485_READ_BIT 0x01
122 #define BT485_WRITE_BIT 0x00
123
124 #define BT485_ADDR_PAL_WRITE 0x00
125 #define BT485_DATA_PAL 0x02
126 #define BT485_PIXEL_MASK 0x04
127 #define BT485_ADDR_PAL_READ 0x06
128 #define BT485_ADDR_CUR_WRITE 0x08
129 #define BT485_DATA_CUR 0x0a
130 #define BT485_CMD_0 0x0c
131 #define BT485_ADDR_CUR_READ 0x0e
132 #define BT485_CMD_1 0x10
133 #define BT485_CMD_2 0x12
134 #define BT485_STATUS 0x14
135 #define BT485_CMD_3 0x14
136 #define BT485_CUR_RAM 0x16
137 #define BT485_CUR_LOW_X 0x18
138 #define BT485_CUR_HIGH_X 0x1a
139 #define BT485_CUR_LOW_Y 0x1c
140 #define BT485_CUR_HIGH_Y 0x1e
141
142
143 /*
144 * Useful defines for managing the BT463 on the 24-plane TGAs/SFB+s
145 */
146
147 #define BT463_ADDR_LO 0x0
148 #define BT463_ADDR_HI 0x1
149 #define BT463_REG_ACC 0x2
150 #define BT463_PALETTE 0x3
151
152 #define BT463_CUR_CLR_0 0x0100
153 #define BT463_CUR_CLR_1 0x0101
154
155 #define BT463_CMD_REG_0 0x0201
156 #define BT463_CMD_REG_1 0x0202
157 #define BT463_CMD_REG_2 0x0203
158
159 #define BT463_READ_MASK_0 0x0205
160 #define BT463_READ_MASK_1 0x0206
161 #define BT463_READ_MASK_2 0x0207
162 #define BT463_READ_MASK_3 0x0208
163
164 #define BT463_BLINK_MASK_0 0x0209
165 #define BT463_BLINK_MASK_1 0x020a
166 #define BT463_BLINK_MASK_2 0x020b
167 #define BT463_BLINK_MASK_3 0x020c
168
169 #define BT463_WINDOW_TYPE_BASE 0x0300
170
171 /*
172 * Useful defines for managing the BT459 on the 8-plane SFB+s
173 */
174
175 #define BT459_ADDR_LO 0x0
176 #define BT459_ADDR_HI 0x1
177 #define BT459_REG_ACC 0x2
178 #define BT459_PALETTE 0x3
179
180 #define BT459_CUR_CLR_1 0x0181
181 #define BT459_CUR_CLR_2 0x0182
182 #define BT459_CUR_CLR_3 0x0183
183
184 #define BT459_CMD_REG_0 0x0201
185 #define BT459_CMD_REG_1 0x0202
186 #define BT459_CMD_REG_2 0x0203
187
188 #define BT459_READ_MASK 0x0204
189
190 #define BT459_BLINK_MASK 0x0206
191
192 #define BT459_CUR_CMD_REG 0x0300
193
194 /*
195 * The framebuffer driver private data.
196 */
197
198 struct tga_par {
199 /* PCI/TC device. */
200 struct device *dev;
201
202 /* Device dependent information. */
203 void __iomem *tga_mem_base;
204 void __iomem *tga_fb_base;
205 void __iomem *tga_regs_base;
206 u8 tga_type; /* TGA_TYPE_XXX */
207 u8 tga_chip_rev; /* dc21030 revision */
208
209 /* Remember blank mode. */
210 u8 vesa_blanked;
211
212 /* Define the video mode. */
213 u32 xres, yres; /* resolution in pixels */
214 u32 htimings; /* horizontal timing register */
215 u32 vtimings; /* vertical timing register */
216 u32 pll_freq; /* pixclock in mhz */
217 u32 bits_per_pixel; /* bits per pixel */
218 u32 sync_on_green; /* set if sync is on green */
219 u32 palette[16];
220 };
221
222
223 /*
224 * Macros for reading/writing TGA and RAMDAC registers
225 */
226
227 static inline void
228 TGA_WRITE_REG(struct tga_par *par, u32 v, u32 r)
229 {
230 writel(v, par->tga_regs_base +r);
231 }
232
233 static inline u32
234 TGA_READ_REG(struct tga_par *par, u32 r)
235 {
236 return readl(par->tga_regs_base +r);
237 }
238
239 static inline void
240 BT485_WRITE(struct tga_par *par, u8 v, u8 r)
241 {
242 TGA_WRITE_REG(par, r, TGA_RAMDAC_SETUP_REG);
243 TGA_WRITE_REG(par, v | (r << 8), TGA_RAMDAC_REG);
244 }
245
246 static inline void
247 BT463_LOAD_ADDR(struct tga_par *par, u16 a)
248 {
249 TGA_WRITE_REG(par, BT463_ADDR_LO<<2, TGA_RAMDAC_SETUP_REG);
250 TGA_WRITE_REG(par, (BT463_ADDR_LO<<10) | (a & 0xff), TGA_RAMDAC_REG);
251 TGA_WRITE_REG(par, BT463_ADDR_HI<<2, TGA_RAMDAC_SETUP_REG);
252 TGA_WRITE_REG(par, (BT463_ADDR_HI<<10) | (a >> 8), TGA_RAMDAC_REG);
253 }
254
255 static inline void
256 BT463_WRITE(struct tga_par *par, u32 m, u16 a, u8 v)
257 {
258 BT463_LOAD_ADDR(par, a);
259 TGA_WRITE_REG(par, m << 2, TGA_RAMDAC_SETUP_REG);
260 TGA_WRITE_REG(par, m << 10 | v, TGA_RAMDAC_REG);
261 }
262
263 static inline void
264 BT459_LOAD_ADDR(struct tga_par *par, u16 a)
265 {
266 TGA_WRITE_REG(par, BT459_ADDR_LO << 2, TGA_RAMDAC_SETUP_REG);
267 TGA_WRITE_REG(par, a & 0xff, TGA_RAMDAC_REG);
268 TGA_WRITE_REG(par, BT459_ADDR_HI << 2, TGA_RAMDAC_SETUP_REG);
269 TGA_WRITE_REG(par, a >> 8, TGA_RAMDAC_REG);
270 }
271
272 static inline void
273 BT459_WRITE(struct tga_par *par, u32 m, u16 a, u8 v)
274 {
275 BT459_LOAD_ADDR(par, a);
276 TGA_WRITE_REG(par, m << 2, TGA_RAMDAC_SETUP_REG);
277 TGA_WRITE_REG(par, v, TGA_RAMDAC_REG);
278 }
279
280 #endif /* TGAFB_H */
281
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