1/*-*- linux-c -*-
2 * linux/drivers/video/i810_dvt.c -- Intel 810 Discrete Video Timings (Intel)
3 *
4 * Copyright (C) 2001 Antonino Daplas<adaplas@pol.net>
5 * All Rights Reserved
6 *
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#include <linux/kernel.h>
14
15#include "i810_regs.h"
16#include "i810.h"
17#include "i810_main.h"
18
19struct mode_registers std_modes[] = {
20 /* 640x480 @ 60Hz */
21 { 25000, 0x0013, 0x0003, 0x40, 0x5F, 0x4F, 0x50, 0x82, 0x51, 0x9D,
22 0x0B, 0x10, 0x40, 0xE9, 0x0B, 0xDF, 0x50, 0xE7, 0x04, 0x02,
23 0x01, 0x01, 0x01, 0x00, 0x01, 0x22002000, 0x22004000, 0x22006000,
24 0x22002000, 0x22004000, 0x22006000, 0xC0 },
25
26 /* 640x480 @ 70Hz */
27 { 28000, 0x0053, 0x0010, 0x40, 0x61, 0x4F, 0x4F, 0x85, 0x52, 0x9A,
28 0xF2, 0x10, 0x40, 0xE0, 0x03, 0xDF, 0x50, 0xDF, 0xF3, 0x01,
29 0x01, 0x01, 0x01, 0x00, 0x01, 0x22002000, 0x22004000, 0x22005000,
30 0x22002000, 0x22004000, 0x22005000, 0xC0 },
31
32 /* 640x480 @ 72Hz */
33 { 31000, 0x0013, 0x0002, 0x40, 0x63, 0x4F, 0x4F, 0x87, 0x52, 0x97,
34 0x06, 0x0F, 0x40, 0xE8, 0x0B, 0xDF, 0x50, 0xDF, 0x07, 0x02,
35 0x01, 0x01, 0x01, 0x00, 0x01, 0x22003000, 0x22005000, 0x22007000,
36 0x22003000, 0x22005000, 0x22007000, 0xC0 },
37
38 /* 640x480 @ 75Hz */
39 { 31000, 0x0013, 0x0002, 0x40, 0x64, 0x4F, 0x4F, 0x88, 0x51, 0x99,
40 0xF2, 0x10, 0x40, 0xE0, 0x03, 0xDF, 0x50, 0xDF, 0xF3, 0x01,
41 0x01, 0x01, 0x01, 0x00, 0x01, 0x22003000, 0x22005000, 0x22007000,
42 0x22003000, 0x22005000, 0x22007000, 0xC0 },
43
44 /* 640x480 @ 85Hz */
45 { 36000, 0x0010, 0x0001, 0x40, 0x63, 0x4F, 0x4F, 0x87, 0x56, 0x9D,
46 0xFB, 0x10, 0x40, 0xE0, 0x03, 0xDF, 0x50, 0xDF, 0xFC, 0x01,
47 0x01, 0x01, 0x01, 0x00, 0x01, 0x22003000, 0x22005000, 0x22107000,
48 0x22003000, 0x22005000, 0x22107000, 0xC0 },
49
50 /* 800x600 @ 56Hz */
51 { 36000, 0x0010, 0x0001, 0x40, 0x7B, 0x63, 0x63, 0x9F, 0x66, 0x8F,
52 0x6F, 0x10, 0x40, 0x58, 0x0A, 0x57, 0xC8, 0x57, 0x70, 0x02,
53 0x02, 0x02, 0x02, 0x00, 0x01, 0x22003000, 0x22005000, 0x22107000,
54 0x22003000, 0x22005000, 0x22107000, 0x00 },
55
56 /* 800x600 @ 60Hz */
57 { 40000, 0x0008, 0x0001, 0x30, 0x7F, 0x63, 0x63, 0x83, 0x68, 0x18,
58 0x72, 0x10, 0x40, 0x58, 0x0C, 0x57, 0xC8, 0x57, 0x73, 0x02,
59 0x02, 0x02, 0x02, 0x00, 0x00, 0x22003000, 0x22006000, 0x22108000,
60 0x22003000, 0x22006000, 0x22108000, 0x00 },
61
62 /* 800x600 @ 70Hz */
63 { 45000, 0x0054, 0x0015, 0x30, 0x7D, 0x63, 0x63, 0x81, 0x68, 0x12,
64 0x6f, 0x10, 0x40, 0x58, 0x0b, 0x57, 0x64, 0x57, 0x70, 0x02,
65 0x02, 0x02, 0x02, 0x00, 0x00, 0x22004000, 0x22007000, 0x2210A000,
66 0x22004000, 0x22007000, 0x2210A000, 0x00 },
67
68 /* 800x600 @ 72Hz */
69 { 50000, 0x0017, 0x0004, 0x30, 0x7D, 0x63, 0x63, 0x81, 0x6A, 0x19,
70 0x98, 0x10, 0x40, 0x7C, 0x02, 0x57, 0xC8, 0x57, 0x99, 0x02,
71 0x02, 0x02, 0x02, 0x00, 0x00, 0x22004000, 0x22007000, 0x2210A000,
72 0x22004000, 0x22007000, 0x2210A000, 0x00 },
73
74 /* 800x600 @ 75Hz */
75 { 49000, 0x001F, 0x0006, 0x30, 0x7F, 0x63, 0x63, 0x83, 0x65, 0x0F,
76 0x6F, 0x10, 0x40, 0x58, 0x0B, 0x57, 0xC8, 0x57, 0x70, 0x02,
77 0x02, 0x02, 0x02, 0x00, 0x00, 0x22004000, 0x22007000, 0x2210B000,
78 0x22004000, 0x22007000, 0x2210B000, 0x00 },
79
80 /* 800x600 @ 85Hz */
81 { 56000, 0x0049, 0x000E, 0x30, 0x7E, 0x63, 0x63, 0x82, 0x67, 0x0F,
82 0x75, 0x10, 0x40, 0x58, 0x0B, 0x57, 0xC8, 0x57, 0x76, 0x02,
83 0x02, 0x02, 0x02, 0x00, 0x00, 0x22004000, 0x22108000, 0x2210b000,
84 0x22004000, 0x22108000, 0x2210b000, 0x00 },
85
86 /* 1024x768 @ 60Hz */
87 { 65000, 0x003F, 0x000A, 0x30, 0xA3, 0x7F, 0x7F, 0x87, 0x83, 0x94,
88 0x24, 0x10, 0x40, 0x02, 0x08, 0xFF, 0x80, 0xFF, 0x25, 0x03,
89 0x02, 0x03, 0x02, 0x00, 0x00, 0x22005000, 0x22109000, 0x2220D000,
90 0x22005000, 0x22109000, 0x2220D000, 0xC0 },
91
92 /* 1024x768 @ 70Hz */
93 { 75000, 0x0017, 0x0002, 0x30, 0xA1, 0x7F, 0x7F, 0x85, 0x82, 0x93,
94 0x24, 0x10, 0x40, 0x02, 0x08, 0xFF, 0x80, 0xFF, 0x25, 0x03,
95 0x02, 0x03, 0x02, 0x00, 0x00, 0x22005000, 0x2210A000, 0x2220F000,
96 0x22005000, 0x2210A000, 0x2220F000, 0xC0 },
97
98 /* 1024x768 @ 75Hz */
99 { 78000, 0x0050, 0x0017, 0x20, 0x9F, 0x7F, 0x7F, 0x83, 0x81, 0x8D,
100 0x1E, 0x10, 0x40, 0x00, 0x03, 0xFF, 0x80, 0xFF, 0x1F, 0x03,
101 0x02, 0x03, 0x02, 0x00, 0x00, 0x22006000, 0x2210B000, 0x22210000,
102 0x22006000, 0x2210B000, 0x22210000, 0x00 },
103
104 /* 1024x768 @ 85Hz */
105 { 94000, 0x003D, 0x000E, 0x20, 0xA7, 0x7F, 0x7F, 0x8B, 0x85, 0x91,
106 0x26, 0x10, 0x40, 0x00, 0x03, 0xFF, 0x80, 0xFF, 0x27, 0x03,
107 0x02, 0x03, 0x02, 0x00, 0x00, 0x22007000, 0x2220E000, 0x22212000,
108 0x22007000, 0x2220E000, 0x22212000, 0x00 },
109
110 /* 1152x864 @ 60Hz */
111 { 80000, 0x0008, 0x0001, 0x20, 0xB3, 0x8F, 0x8F, 0x97, 0x93, 0x9f,
112 0x87, 0x10, 0x40, 0x60, 0x03, 0x5F, 0x90, 0x5f, 0x88, 0x03,
113 0x03, 0x03, 0x03, 0x00, 0x00, 0x2220C000, 0x22210000, 0x22415000,
114 0x2220C000, 0x22210000, 0x22415000, 0x00 },
115
116 /* 1152x864 @ 70Hz */
117 { 96000, 0x000a, 0x0001, 0x20, 0xbb, 0x8F, 0x8F, 0x9f, 0x98, 0x87,
118 0x82, 0x10, 0x40, 0x60, 0x03, 0x5F, 0x90, 0x5F, 0x83, 0x03,
119 0x03, 0x03, 0x03, 0x00, 0x00, 0x22107000, 0x22210000, 0x22415000,
120 0x22107000, 0x22210000, 0x22415000, 0x00 },
121
122 /* 1152x864 @ 72Hz */
123 { 99000, 0x001f, 0x0006, 0x20, 0xbb, 0x8F, 0x8F, 0x9f, 0x98, 0x87,
124 0x83, 0x10, 0x40, 0x60, 0x03, 0x5F, 0x90, 0x5F, 0x84, 0x03,
125 0x03, 0x03, 0x03, 0x00, 0x00, 0x22107000, 0x22210000, 0x22415000,
126 0x22107000, 0x22210000, 0x22415000, 0x00 },
127
128 /* 1152x864 @ 75Hz */
129 { 108000, 0x0010, 0x0002, 0x20, 0xC3, 0x8F, 0x8F, 0x87, 0x97, 0x07,
130 0x82, 0x10, 0x40, 0x60, 0x03, 0x5F, 0x90, 0x5F, 0x83, 0x03,
131 0x03, 0x03, 0x03, 0x00, 0x01, 0x22107000, 0x22210000, 0x22415000,
132 0x22107000, 0x22210000, 0x22415000, 0x00 },
133
134 /* 1152x864 @ 85Hz */
135 { 121000, 0x006D, 0x0014, 0x20, 0xc0, 0x8F, 0x8F, 0x84, 0x97, 0x07,
136 0x93, 0x10, 0x40, 0x60, 0x03, 0x5F, 0x90, 0x5F, 0x94, 0x03,
137 0x03, 0x03, 0x03, 0x00, 0x01, 0x2220C000, 0x22210000, 0x22415000,
138 0x2220C000, 0x22210000, 0x22415000, 0x0 },
139
140 /* 1280x960 @ 60Hz */
141 { 108000, 0x0010, 0x0002, 0x20, 0xDC, 0x9F, 0x9F, 0x80, 0xAB, 0x99,
142 0xE6, 0x10, 0x40, 0xC0, 0x03, 0xBF, 0xA0, 0xBF, 0xE7, 0x03,
143 0x03, 0x03, 0x03, 0x00, 0x01, 0x2210A000, 0x22210000, 0x22415000,
144 0x2210A000, 0x22210000, 0x22415000, 0x00 },
145
146 /* 1280x960 @ 75Hz */
147 { 129000, 0x0029, 0x0006, 0x20, 0xD3, 0x9F, 0x9F, 0x97, 0xaa, 0x1b,
148 0xE8, 0x10, 0x40, 0xC0, 0x03, 0xBF, 0xA0, 0xBF, 0xE9, 0x03,
149 0x03, 0x03, 0x03, 0x00, 0x01, 0x2210A000, 0x22210000, 0x2241B000,
150 0x2210A000, 0x22210000, 0x2241B000, 0x00 },
151
152 /* 1280x960 @ 85Hz */
153 { 148000, 0x0042, 0x0009, 0x20, 0xD3, 0x9F, 0x9F, 0x97, 0xA7, 0x1B,
154 0xF1, 0x10, 0x40, 0xC0, 0x03, 0xBF, 0xA0, 0xBF, 0xF2, 0x03,
155 0x03, 0x03, 0x03, 0x00, 0x01, 0x2210A000, 0x22220000, 0x2241D000,
156 0x2210A000, 0x22220000, 0x2241D000, 0x00 },
157
158 /* 1600x1200 @ 60Hz */
159 { 162000, 0x0019, 0x0006, 0x10, 0x09, 0xC7, 0xC7, 0x8D, 0xcf, 0x07,
160 0xE0, 0x10, 0x40, 0xB0, 0x03, 0xAF, 0xC8, 0xAF, 0xE1, 0x04,
161 0x04, 0x04, 0x04, 0x01, 0x00, 0x2210b000, 0x22416000, 0x44419000,
162 0x2210b000, 0x22416000, 0x44419000, 0x00 },
163
164 /* 1600x1200 @ 65 Hz */
165 { 175000, 0x005d, 0x0018, 0x10, 0x09, 0xC7, 0xC7, 0x8D, 0xcf, 0x07,
166 0xE0, 0x10, 0x40, 0xB0, 0x03, 0xAF, 0xC8, 0xAF, 0xE1, 0x04,
167 0x04, 0x04, 0x04, 0x01, 0x00, 0x2210c000, 0x22416000, 0x44419000,
168 0x2210c000, 0x22416000, 0x44419000, 0x00 },
169
170 /* 1600x1200 @ 70 Hz */
171 { 189000, 0x003D, 0x000e, 0x10, 0x09, 0xC7, 0xC7, 0x8d, 0xcf, 0x07,
172 0xE0, 0x10, 0x40, 0xb0, 0x03, 0xAF, 0xC8, 0xaf, 0xE1, 0x04,
173 0x04, 0x04, 0x04, 0x01, 0x00, 0x2220e000, 0x22416000, 0x44419000,
174 0x2220e000, 0x22416000, 0x44419000, 0x00 },
175
176 /* 1600x1200 @ 72 Hz */
177 { 195000, 0x003f, 0x000e, 0x10, 0x0b, 0xC7, 0xC7, 0x8f, 0xd5, 0x0b,
178 0xE1, 0x10, 0x40, 0xb0, 0x03, 0xAF, 0xC8, 0xaf, 0xe2, 0x04, 0x04,
179 0x04, 0x04, 0x01, 0x00, 0x2220e000, 0x22416000, 0x44419000,
180 0x2220e000, 0x22416000, 0x44419000, 0x00 },
181
182 /* 1600x1200 @ 75 Hz */
183 { 202000, 0x0024, 0x0007, 0x10, 0x09, 0xC7, 0xC7, 0x8d, 0xcf, 0x07,
184 0xE0, 0x10, 0x40, 0xb0, 0x03, 0xAF, 0xC8, 0xaf, 0xE1, 0x04, 0x04,
185 0x04, 0x04, 0x01, 0x00, 0x2220e000, 0x22416000, 0x44419000,
186 0x2220e000, 0x22416000, 0x44419000, 0x00 },
187
188 /* 1600x1200 @ 85 Hz */
189 { 229000, 0x0029, 0x0007, 0x10, 0x09, 0xC7, 0xC7, 0x8d, 0xcf, 0x07,
190 0xE0, 0x10, 0x40, 0xb0, 0x03, 0xAF, 0xC8, 0xaf, 0xE1, 0x04, 0x04,
191 0x04, 0x04, 0x01, 0x00, 0x22210000, 0x22416000, 0x0,
192 0x22210000, 0x22416000, 0x0, 0x00 },
193};
194
195void round_off_xres(u32 *xres)
196{
197 if (*xres <= 640)
198 *xres = 640;
199 else if (*xres <= 800)
200 *xres = 800;
201 else if (*xres <= 1024)
202 *xres = 1024;
203 else if (*xres <= 1152)
204 *xres = 1152;
205 else if (*xres <= 1280)
206 *xres = 1280;
207 else
208 *xres = 1600;
209}
210
211inline void round_off_yres(u32 *xres, u32 *yres)
212{
213 *yres = (*xres * 3) >> 2;
214}
215
216static int i810fb_find_best_mode(u32 xres, u32 yres, u32 pixclock)
217{
218 u32 diff = 0, diff_best = 0xFFFFFFFF, i = 0, i_best = 0;
219 u8 hfl = (u8) ((xres >> 3) - 1);
220
221 for (i = 0; i < ARRAY_SIZE(std_modes); i++) {
222 if (std_modes[i].cr01 == hfl) {
223 if (std_modes[i].pixclock <= pixclock)
224 diff = pixclock - std_modes[i].pixclock;
225 if (diff < diff_best) {
226 i_best = i;
227 diff_best = diff;
228 }
229 }
230 }
231 return i_best;
232}
233
234void i810fb_encode_registers(const struct fb_var_screeninfo *var,
235 struct i810fb_par *par, u32 xres, u32 yres)
236{
237 u32 i_best = i810fb_find_best_mode(xres, yres, pixclock: par->regs.pixclock);
238
239 par->regs = std_modes[i_best];
240
241 /* overlay */
242 par->ovract = ((xres + var->right_margin + var->hsync_len +
243 var->left_margin - 32) | ((xres - 32) << 16));
244}
245
246void i810fb_fill_var_timings(struct fb_var_screeninfo *var)
247{
248 u32 total, xres, yres;
249 u32 mode, pixclock;
250
251 xres = var->xres;
252 yres = var->yres;
253
254 pixclock = 1000000000 / var->pixclock;
255 mode = i810fb_find_best_mode(xres, yres, pixclock);
256
257 total = (std_modes[mode].cr00 | (std_modes[mode].cr35 & 1) << 8) + 3;
258 total <<= 3;
259
260 var->pixclock = 1000000000 / std_modes[mode].pixclock;
261 var->right_margin = (std_modes[mode].cr04 << 3) - xres;
262 var->hsync_len = ((std_modes[mode].cr05 & 0x1F) -
263 (std_modes[mode].cr04 & 0x1F)) << 3;
264 var->left_margin = (total - (xres + var->right_margin +
265 var->hsync_len));
266 var->sync = FB_SYNC_ON_GREEN;
267 if (~(std_modes[mode].msr & (1 << 6)))
268 var->sync |= FB_SYNC_HOR_HIGH_ACT;
269 if (~(std_modes[mode].msr & (1 << 7)))
270 var->sync |= FB_SYNC_VERT_HIGH_ACT;
271
272 total = (std_modes[mode].cr06 | (std_modes[mode].cr30 & 0xF) << 8) + 2;
273 var->lower_margin = (std_modes[mode].cr10 |
274 (std_modes[mode].cr32 & 0x0F) << 8) - yres;
275 var->vsync_len = (std_modes[mode].cr11 & 0x0F) -
276 (var->lower_margin & 0x0F);
277 var->upper_margin = total - (yres + var->lower_margin + var->vsync_len);
278}
279
280u32 i810_get_watermark(const struct fb_var_screeninfo *var,
281 struct i810fb_par *par)
282{
283 struct mode_registers *params = &par->regs;
284 u32 wmark = 0;
285
286 if (par->mem_freq == 100) {
287 switch (var->bits_per_pixel) {
288 case 8:
289 wmark = params->bpp8_100;
290 break;
291 case 16:
292 wmark = params->bpp16_100;
293 break;
294 case 24:
295 case 32:
296 wmark = params->bpp24_100;
297 }
298 } else {
299 switch (var->bits_per_pixel) {
300 case 8:
301 wmark = params->bpp8_133;
302 break;
303 case 16:
304 wmark = params->bpp16_133;
305 break;
306 case 24:
307 case 32:
308 wmark = params->bpp24_133;
309 }
310 }
311 return wmark;
312}
313
314

source code of linux/drivers/video/fbdev/i810/i810_dvt.c