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gerrit-public.fairphone.software / kernel / msm / 88c7664f13bd1a36acb8566b93892a4c58759ac6 / . / drivers / video / i810 / i810_dvt.c
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Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]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
18struct mode_registers std_modes[] = {
19 /* 640x480 @ 60Hz */
20 { 25000, 0x0013, 0x0003, 0x40, 0x5F, 0x4F, 0x50, 0x82, 0x51, 0x9D,
21 0x0B, 0x10, 0x40, 0xE9, 0x0B, 0xDF, 0x50, 0xE7, 0x04, 0x02,
22 0x01, 0x01, 0x01, 0x00, 0x01, 0x22002000, 0x22004000, 0x22006000,
23 0x22002000, 0x22004000, 0x22006000, 0xC0 },
24
25 /* 640x480 @ 70Hz */
26 { 28000, 0x0053, 0x0010, 0x40, 0x61, 0x4F, 0x4F, 0x85, 0x52, 0x9A,
27 0xF2, 0x10, 0x40, 0xE0, 0x03, 0xDF, 0x50, 0xDF, 0xF3, 0x01,
28 0x01, 0x01, 0x01, 0x00, 0x01, 0x22002000, 0x22004000, 0x22005000,
29 0x22002000, 0x22004000, 0x22005000, 0xC0 },
30
31 /* 640x480 @ 72Hz */
32 { 31000, 0x0013, 0x0002, 0x40, 0x63, 0x4F, 0x4F, 0x87, 0x52, 0x97,
33 0x06, 0x0F, 0x40, 0xE8, 0x0B, 0xDF, 0x50, 0xDF, 0x07, 0x02,
34 0x01, 0x01, 0x01, 0x00, 0x01, 0x22003000, 0x22005000, 0x22007000,
35 0x22003000, 0x22005000, 0x22007000, 0xC0 },
36
37 /* 640x480 @ 75Hz */
38 { 31000, 0x0013, 0x0002, 0x40, 0x64, 0x4F, 0x4F, 0x88, 0x51, 0x99,
39 0xF2, 0x10, 0x40, 0xE0, 0x03, 0xDF, 0x50, 0xDF, 0xF3, 0x01,
40 0x01, 0x01, 0x01, 0x00, 0x01, 0x22003000, 0x22005000, 0x22007000,
41 0x22003000, 0x22005000, 0x22007000, 0xC0 },
42
43 /* 640x480 @ 85Hz */
44 { 36000, 0x0010, 0x0001, 0x40, 0x63, 0x4F, 0x4F, 0x87, 0x56, 0x9D,
45 0xFB, 0x10, 0x40, 0xE0, 0x03, 0xDF, 0x50, 0xDF, 0xFC, 0x01,
46 0x01, 0x01, 0x01, 0x00, 0x01, 0x22003000, 0x22005000, 0x22107000,
47 0x22003000, 0x22005000, 0x22107000, 0xC0 },
48
49 /* 800x600 @ 56Hz */
50 { 36000, 0x0010, 0x0001, 0x40, 0x7B, 0x63, 0x63, 0x9F, 0x66, 0x8F,
51 0x6F, 0x10, 0x40, 0x58, 0x0A, 0x57, 0xC8, 0x57, 0x70, 0x02,
52 0x02, 0x02, 0x02, 0x00, 0x01, 0x22003000, 0x22005000, 0x22107000,
53 0x22003000, 0x22005000, 0x22107000, 0x00 },
54
55 /* 800x600 @ 60Hz */
56 { 40000, 0x0008, 0x0001, 0x30, 0x7F, 0x63, 0x63, 0x83, 0x68, 0x18,
57 0x72, 0x10, 0x40, 0x58, 0x0C, 0x57, 0xC8, 0x57, 0x73, 0x02,
58 0x02, 0x02, 0x02, 0x00, 0x00, 0x22003000, 0x22006000, 0x22108000,
59 0x22003000, 0x22006000, 0x22108000, 0x00 },
60
61 /* 800x600 @ 70Hz */
62 { 45000, 0x0054, 0x0015, 0x30, 0x7D, 0x63, 0x63, 0x81, 0x68, 0x12,
63 0x6f, 0x10, 0x40, 0x58, 0x0b, 0x57, 0x64, 0x57, 0x70, 0x02,
64 0x02, 0x02, 0x02, 0x00, 0x00, 0x22004000, 0x22007000, 0x2210A000,
65 0x22004000, 0x22007000, 0x2210A000, 0x00 },
66
67 /* 800x600 @ 72Hz */
68 { 50000, 0x0017, 0x0004, 0x30, 0x7D, 0x63, 0x63, 0x81, 0x6A, 0x19,
69 0x98, 0x10, 0x40, 0x7C, 0x02, 0x57, 0xC8, 0x57, 0x99, 0x02,
70 0x02, 0x02, 0x02, 0x00, 0x00, 0x22004000, 0x22007000, 0x2210A000,
71 0x22004000, 0x22007000, 0x2210A000, 0x00 },
72
73 /* 800x600 @ 75Hz */
74 { 49000, 0x001F, 0x0006, 0x30, 0x7F, 0x63, 0x63, 0x83, 0x65, 0x0F,
75 0x6F, 0x10, 0x40, 0x58, 0x0B, 0x57, 0xC8, 0x57, 0x70, 0x02,
76 0x02, 0x02, 0x02, 0x00, 0x00, 0x22004000, 0x22007000, 0x2210B000,
77 0x22004000, 0x22007000, 0x2210B000, 0x00 },
78
79 /* 800x600 @ 85Hz */
80 { 56000, 0x0049, 0x000E, 0x30, 0x7E, 0x63, 0x63, 0x82, 0x67, 0x0F,
81 0x75, 0x10, 0x40, 0x58, 0x0B, 0x57, 0xC8, 0x57, 0x76, 0x02,
82 0x02, 0x02, 0x02, 0x00, 0x00, 0x22004000, 0x22108000, 0x2210b000,
83 0x22004000, 0x22108000, 0x2210b000, 0x00 },
84
85 /* 1024x768 @ 60Hz */
86 { 65000, 0x003F, 0x000A, 0x30, 0xA3, 0x7F, 0x7F, 0x87, 0x83, 0x94,
87 0x24, 0x10, 0x40, 0x02, 0x08, 0xFF, 0x80, 0xFF, 0x25, 0x03,
88 0x02, 0x03, 0x02, 0x00, 0x00, 0x22005000, 0x22109000, 0x2220D000,
89 0x22005000, 0x22109000, 0x2220D000, 0xC0 },
90
91 /* 1024x768 @ 70Hz */
92 { 75000, 0x0017, 0x0002, 0x30, 0xA1, 0x7F, 0x7F, 0x85, 0x82, 0x93,
93 0x24, 0x10, 0x40, 0x02, 0x08, 0xFF, 0x80, 0xFF, 0x25, 0x03,
94 0x02, 0x03, 0x02, 0x00, 0x00, 0x22005000, 0x2210A000, 0x2220F000,
95 0x22005000, 0x2210A000, 0x2220F000, 0xC0 },
96
97 /* 1024x768 @ 75Hz */
98 { 78000, 0x0050, 0x0017, 0x20, 0x9F, 0x7F, 0x7F, 0x83, 0x81, 0x8D,
99 0x1E, 0x10, 0x40, 0x00, 0x03, 0xFF, 0x80, 0xFF, 0x1F, 0x03,
100 0x02, 0x03, 0x02, 0x00, 0x00, 0x22006000, 0x2210B000, 0x22210000,
101 0x22006000, 0x2210B000, 0x22210000, 0x00 },
102
103 /* 1024x768 @ 85Hz */
104 { 94000, 0x003D, 0x000E, 0x20, 0xA7, 0x7F, 0x7F, 0x8B, 0x85, 0x91,
105 0x26, 0x10, 0x40, 0x00, 0x03, 0xFF, 0x80, 0xFF, 0x27, 0x03,
106 0x02, 0x03, 0x02, 0x00, 0x00, 0x22007000, 0x2220E000, 0x22212000,
107 0x22007000, 0x2220E000, 0x22212000, 0x00 },
108
109 /* 1152x864 @ 60Hz */
110 { 80000, 0x0008, 0x0001, 0x20, 0xB3, 0x8F, 0x8F, 0x97, 0x93, 0x9f,
111 0x87, 0x10, 0x40, 0x60, 0x03, 0x5F, 0x90, 0x5f, 0x88, 0x03,
112 0x03, 0x03, 0x03, 0x00, 0x00, 0x2220C000, 0x22210000, 0x22415000,
113 0x2220C000, 0x22210000, 0x22415000, 0x00 },
114
115 /* 1152x864 @ 70Hz */
116 { 96000, 0x000a, 0x0001, 0x20, 0xbb, 0x8F, 0x8F, 0x9f, 0x98, 0x87,
117 0x82, 0x10, 0x40, 0x60, 0x03, 0x5F, 0x90, 0x5F, 0x83, 0x03,
118 0x03, 0x03, 0x03, 0x00, 0x00, 0x22107000, 0x22210000, 0x22415000,
119 0x22107000, 0x22210000, 0x22415000, 0x00 },
120
121 /* 1152x864 @ 72Hz */
122 { 99000, 0x001f, 0x0006, 0x20, 0xbb, 0x8F, 0x8F, 0x9f, 0x98, 0x87,
123 0x83, 0x10, 0x40, 0x60, 0x03, 0x5F, 0x90, 0x5F, 0x84, 0x03,
124 0x03, 0x03, 0x03, 0x00, 0x00, 0x22107000, 0x22210000, 0x22415000,
125 0x22107000, 0x22210000, 0x22415000, 0x00 },
126
127 /* 1152x864 @ 75Hz */
128 { 108000, 0x0010, 0x0002, 0x20, 0xC3, 0x8F, 0x8F, 0x87, 0x97, 0x07,
129 0x82, 0x10, 0x40, 0x60, 0x03, 0x5F, 0x90, 0x5F, 0x83, 0x03,
130 0x03, 0x03, 0x03, 0x00, 0x01, 0x22107000, 0x22210000, 0x22415000,
131 0x22107000, 0x22210000, 0x22415000, 0x00 },
132
133 /* 1152x864 @ 85Hz */
134 { 121000, 0x006D, 0x0014, 0x20, 0xc0, 0x8F, 0x8F, 0x84, 0x97, 0x07,
135 0x93, 0x10, 0x40, 0x60, 0x03, 0x5F, 0x90, 0x5F, 0x94, 0x03,
136 0x03, 0x03, 0x03, 0x00, 0x01, 0x2220C000, 0x22210000, 0x22415000,
137 0x2220C000, 0x22210000, 0x22415000, 0x0 },
138
139 /* 1280x960 @ 60Hz */
140 { 108000, 0x0010, 0x0002, 0x20, 0xDC, 0x9F, 0x9F, 0x80, 0xAB, 0x99,
141 0xE6, 0x10, 0x40, 0xC0, 0x03, 0xBF, 0xA0, 0xBF, 0xE7, 0x03,
142 0x03, 0x03, 0x03, 0x00, 0x01, 0x2210A000, 0x22210000, 0x22415000,
143 0x2210A000, 0x22210000, 0x22415000, 0x00 },
144
145 /* 1280x960 @ 75Hz */
146 { 129000, 0x0029, 0x0006, 0x20, 0xD3, 0x9F, 0x9F, 0x97, 0xaa, 0x1b,
147 0xE8, 0x10, 0x40, 0xC0, 0x03, 0xBF, 0xA0, 0xBF, 0xE9, 0x03,
148 0x03, 0x03, 0x03, 0x00, 0x01, 0x2210A000, 0x22210000, 0x2241B000,
149 0x2210A000, 0x22210000, 0x2241B000, 0x00 },
150
151 /* 1280x960 @ 85Hz */
152 { 148000, 0x0042, 0x0009, 0x20, 0xD3, 0x9F, 0x9F, 0x97, 0xA7, 0x1B,
153 0xF1, 0x10, 0x40, 0xC0, 0x03, 0xBF, 0xA0, 0xBF, 0xF2, 0x03,
154 0x03, 0x03, 0x03, 0x00, 0x01, 0x2210A000, 0x22220000, 0x2241D000,
155 0x2210A000, 0x22220000, 0x2241D000, 0x00 },
156
157 /* 1600x1200 @ 60Hz */
158 { 162000, 0x0019, 0x0006, 0x10, 0x09, 0xC7, 0xC7, 0x8D, 0xcf, 0x07,
159 0xE0, 0x10, 0x40, 0xB0, 0x03, 0xAF, 0xC8, 0xAF, 0xE1, 0x04,
160 0x04, 0x04, 0x04, 0x01, 0x00, 0x2210b000, 0x22416000, 0x44419000,
161 0x2210b000, 0x22416000, 0x44419000, 0x00 },
162
163 /* 1600x1200 @ 65 Hz */
164 { 175000, 0x005d, 0x0018, 0x10, 0x09, 0xC7, 0xC7, 0x8D, 0xcf, 0x07,
165 0xE0, 0x10, 0x40, 0xB0, 0x03, 0xAF, 0xC8, 0xAF, 0xE1, 0x04,
166 0x04, 0x04, 0x04, 0x01, 0x00, 0x2210c000, 0x22416000, 0x44419000,
167 0x2210c000, 0x22416000, 0x44419000, 0x00 },
168
169 /* 1600x1200 @ 70 Hz */
170 { 189000, 0x003D, 0x000e, 0x10, 0x09, 0xC7, 0xC7, 0x8d, 0xcf, 0x07,
171 0xE0, 0x10, 0x40, 0xb0, 0x03, 0xAF, 0xC8, 0xaf, 0xE1, 0x04,
172 0x04, 0x04, 0x04, 0x01, 0x00, 0x2220e000, 0x22416000, 0x44419000,
173 0x2220e000, 0x22416000, 0x44419000, 0x00 },
174
175 /* 1600x1200 @ 72 Hz */
176 { 195000, 0x003f, 0x000e, 0x10, 0x0b, 0xC7, 0xC7, 0x8f, 0xd5, 0x0b,
177 0xE1, 0x10, 0x40, 0xb0, 0x03, 0xAF, 0xC8, 0xaf, 0xe2, 0x04, 0x04,
178 0x04, 0x04, 0x01, 0x00, 0x2220e000, 0x22416000, 0x44419000,
179 0x2220e000, 0x22416000, 0x44419000, 0x00 },
180
181 /* 1600x1200 @ 75 Hz */
182 { 202000, 0x0024, 0x0007, 0x10, 0x09, 0xC7, 0xC7, 0x8d, 0xcf, 0x07,
183 0xE0, 0x10, 0x40, 0xb0, 0x03, 0xAF, 0xC8, 0xaf, 0xE1, 0x04, 0x04,
184 0x04, 0x04, 0x01, 0x00, 0x2220e000, 0x22416000, 0x44419000,
185 0x2220e000, 0x22416000, 0x44419000, 0x00 },
186
187 /* 1600x1200 @ 85 Hz */
188 { 229000, 0x0029, 0x0007, 0x10, 0x09, 0xC7, 0xC7, 0x8d, 0xcf, 0x07,
189 0xE0, 0x10, 0x40, 0xb0, 0x03, 0xAF, 0xC8, 0xaf, 0xE1, 0x04, 0x04,
190 0x04, 0x04, 0x01, 0x00, 0x22210000, 0x22416000, 0x0,
191 0x22210000, 0x22416000, 0x0, 0x00 },
192};
193
194void round_off_xres(u32 *xres)
195{
196 if (*xres <= 640)
197 *xres = 640;
198 else if (*xres <= 800)
199 *xres = 800;
200 else if (*xres <= 1024)
201 *xres = 1024;
202 else if (*xres <= 1152)
203 *xres = 1152;
204 else if (*xres <= 1280)
205 *xres = 1280;
206 else
207 *xres = 1600;
208}
209
210inline void round_off_yres(u32 *xres, u32 *yres)
211{
212 *yres = (*xres * 3) >> 2;
213}
214
215void i810fb_encode_registers(const struct fb_var_screeninfo *var,
216 struct i810fb_par *par, u32 xres, u32 yres)
217{
218 u32 diff = 0, diff_best = 0xFFFFFFFF, i = 0, i_best = 0;
219 u8 hfl;
220
221 hfl = (u8) ((xres >> 3) - 1);
222 for (i = 0; i < ARRAY_SIZE(std_modes); i++) {
223 if (std_modes[i].cr01 == hfl) {
224 if (std_modes[i].pixclock <= par->regs.pixclock)
225 diff = par->regs.pixclock -
226 std_modes[i].pixclock;
227 if (diff < diff_best) {
228 i_best = i;
229 diff_best = diff;
230 }
231 }
232 }
233 par->regs = std_modes[i_best];
234
235 /* overlay */
236 par->ovract = ((xres + var->right_margin + var->hsync_len +
237 var->left_margin - 32) | ((xres - 32) << 16));
238}
239
240void i810fb_fill_var_timings(struct fb_var_screeninfo *var)
241{
242 struct i810fb_par par;
243 u32 total, xres, yres;
244
245 xres = var->xres;
246 yres = var->yres;
247
248 par.regs.pixclock = 1000000000/var->pixclock;
249 i810fb_encode_registers(var, &par, xres, yres);
250
251 total = ((par.regs.cr00 | (par.regs.cr35 & 1) << 8) + 3) << 3;
252
253 var->pixclock = 1000000000/par.regs.pixclock;
254 var->right_margin = (par.regs.cr04 << 3) - xres;
255 var->hsync_len = ((par.regs.cr05 & 0x1F) -
256 (par.regs.cr04 & 0x1F)) << 3;
257 var->left_margin = (total - (xres + var->right_margin +
258 var->hsync_len));
259 var->sync = FB_SYNC_ON_GREEN;
260 if (~(par.regs.msr & (1 << 6)))
261 var->sync |= FB_SYNC_HOR_HIGH_ACT;
262 if (~(par.regs.msr & (1 << 7)))
263 var->sync |= FB_SYNC_VERT_HIGH_ACT;
264
265
266 total = ((par.regs.cr06 | (par.regs.cr30 & 0x0F) << 8)) + 2;
267 var->lower_margin = (par.regs.cr10 |
268 (par.regs.cr32 & 0x0F) << 8) - yres;
269 var->vsync_len = (par.regs.cr11 & 0x0F) - (var->lower_margin & 0x0F);
270 var->upper_margin = total - (yres + var->lower_margin +
271 var->vsync_len);
272}
273
274u32 i810_get_watermark(struct fb_var_screeninfo *var,
275 struct i810fb_par *par)
276{
277 struct mode_registers *params = &par->regs;
278 u32 wmark = 0;
279
280 if (par->mem_freq == 100) {
281 switch (var->bits_per_pixel) {
282 case 8:
283 wmark = params->bpp8_100;
284 break;
285 case 16:
286 wmark = params->bpp16_100;
287 break;
288 case 24:
289 case 32:
290 wmark = params->bpp24_100;
291 }
292 } else {
293 switch (var->bits_per_pixel) {
294 case 8:
295 wmark = params->bpp8_133;
296 break;
297 case 16:
298 wmark = params->bpp16_133;
299 break;
300 case 24:
301 case 32:
302 wmark = params->bpp24_133;
303 }
304 }
305 return wmark;
306}
307