ee2a3bdf |
1 | /* |
2 | * quick tool to set various timings for Wiz |
3 | * |
4 | * Copyright (c) GraÅžvydas "notaz" Ignotas, 2009 |
5 | * |
6 | * Redistribution and use in source and binary forms, with or without |
7 | * modification, are permitted provided that the following conditions are met: |
8 | * * Redistributions of source code must retain the above copyright |
9 | * notice, this list of conditions and the following disclaimer. |
10 | * * Redistributions in binary form must reproduce the above copyright |
11 | * notice, this list of conditions and the following disclaimer in the |
12 | * documentation and/or other materials provided with the distribution. |
13 | * * Neither the name of the organization nor the |
14 | * names of its contributors may be used to endorse or promote products |
15 | * derived from this software without specific prior written permission. |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
18 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
20 | * ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
23 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
24 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
25 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
26 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | * |
28 | * HTOTAL: X VTOTAL: 341 |
29 | * HSWIDTH: 1 VSWIDTH: 0 |
30 | * HASTART: 37 VASTART: 17 |
31 | * HAEND: 277 VAEND: 337 |
32 | * |
33 | * 120Hz |
34 | * pcd 8, 447: + 594us |
35 | * pcd 9, 397: + 36us |
36 | * pcd 10, 357: - 523us |
37 | * pcd 11, 325: +1153us |
38 | * |
39 | * 'lcd_timings=397,1,37,277,341,0,17,337;dpc_clkdiv0=9' |
40 | * 'ram_timings=2,9,4,1,1,1,1' |
41 | */ |
42 | |
43 | #include <stdio.h> |
44 | #include <stdlib.h> |
45 | #include <string.h> |
46 | #include "pollux_set.h" |
47 | |
48 | /* parse stuff */ |
49 | static int parse_lcd_timings(const char *str, void *data) |
50 | { |
51 | int *lcd_timings = data; |
52 | const char *p = str; |
53 | int ret, c; |
54 | ret = sscanf(str, "%d,%d,%d,%d,%d,%d,%d,%d", |
55 | &lcd_timings[0], &lcd_timings[1], &lcd_timings[2], &lcd_timings[3], |
56 | &lcd_timings[4], &lcd_timings[5], &lcd_timings[6], &lcd_timings[7]); |
57 | if (ret != 8) |
58 | return -1; |
59 | /* skip seven commas */ |
60 | for (c = 0; c < 7 && *p != 0; p++) |
61 | if (*p == ',') |
62 | c++; |
63 | if (c != 7) |
64 | return -1; |
65 | /* skip last number */ |
66 | while ('0' <= *p && *p <= '9') |
67 | p++; |
68 | |
69 | return p - str; |
70 | } |
71 | |
72 | static int parse_ram_timings(const char *str, void *data) |
73 | { |
74 | int *ram_timings = data; |
75 | const char *p = str; |
76 | int ret, c; |
77 | float cas; |
78 | |
79 | ret = sscanf(p, "%f,%d,%d,%d,%d,%d,%d", |
80 | &cas, &ram_timings[1], &ram_timings[2], &ram_timings[3], |
81 | &ram_timings[4], &ram_timings[5], &ram_timings[6]); |
82 | if (ret != 7) |
83 | return -1; |
84 | if (cas == 2) |
85 | ram_timings[0] = 1; |
86 | else if (cas == 2.5) |
87 | ram_timings[0] = 2; |
88 | else if (cas == 3) |
89 | ram_timings[0] = 3; |
90 | else |
91 | return -1; |
92 | for (c = 0; c < 6 && *p != 0; p++) |
93 | if (*p == ',') |
94 | c++; |
95 | if (c != 6) |
96 | return -1; |
97 | while ('0' <= *p && *p <= '9') |
98 | p++; |
99 | |
100 | return p - str; |
101 | } |
102 | |
103 | static int parse_decimal(const char *str, void *data) |
104 | { |
105 | char *ep; |
106 | |
107 | *(int *)data = strtoul(str, &ep, 10); |
108 | if (ep == str) |
109 | return -1; |
110 | |
111 | return ep - str; |
112 | } |
113 | |
114 | /* validate and apply stuff */ |
115 | static int apply_lcd_timings(volatile unsigned short *memregs, void *data) |
116 | { |
117 | int *lcd_timings = data; |
118 | int i; |
119 | |
120 | for (i = 0; i < 8; i++) { |
121 | if (lcd_timings[i] & ~0xffff) { |
122 | fprintf(stderr, "pollux_set: invalid lcd timing %d: %d\n", i, lcd_timings[i]); |
123 | return -1; |
124 | } |
125 | } |
126 | |
127 | for (i = 0; i < 8; i++) |
128 | memregs[(0x307c>>1) + i] = lcd_timings[i]; |
129 | |
130 | return 0; |
131 | } |
132 | |
133 | static const struct { |
134 | signed char adj; /* how to adjust value passed by user */ |
135 | signed short min; /* range of */ |
136 | signed short max; /* allowed values (inclusive) */ |
137 | } |
138 | ram_ranges[] = { |
139 | { 0, 1, 3 }, /* cas (cl) */ |
140 | { -2, 0, 15 }, /* trc */ |
141 | { -2, 0, 15 }, /* tras */ |
142 | { 0, 0, 15 }, /* twr */ |
143 | { 0, 0, 15 }, /* tmrd */ |
144 | { 0, 0, 15 }, /* trp */ |
145 | { 0, 0, 15 }, /* trcd */ |
146 | }; |
147 | |
148 | static int apply_ram_timings(volatile unsigned short *memregs, void *data) |
149 | { |
150 | int *ram_timings = data; |
151 | int i, val; |
152 | |
153 | for (i = 0; i < 7; i++) |
154 | { |
155 | ram_timings[i] += ram_ranges[i].adj; |
156 | if (ram_timings[i] < ram_ranges[i].min || ram_timings[i] > ram_ranges[i].max) { |
157 | fprintf(stderr, "pollux_set: invalid RAM timing %d\n", i); |
158 | return -1; |
159 | } |
160 | } |
161 | |
162 | val = memregs[0x14802>>1] & 0x0f00; |
163 | val |= (ram_timings[4] << 12) | (ram_timings[5] << 4) | ram_timings[6]; |
164 | memregs[0x14802>>1] = val; |
165 | |
166 | val = memregs[0x14804>>1] & 0x4000; |
167 | val |= (ram_timings[0] << 12) | (ram_timings[1] << 8) | |
168 | (ram_timings[2] << 4) | ram_timings[3]; |
169 | val |= 0x8000; |
170 | memregs[0x14804>>1] = val; |
171 | |
172 | for (i = 0; i < 0x100000 && (memregs[0x14804>>1] & 0x8000); i++) |
173 | ; |
174 | |
175 | return 0; |
176 | } |
177 | |
178 | static int apply_dpc_clkdiv0(volatile unsigned short *memregs, void *data) |
179 | { |
180 | int pcd = *(int *)data; |
181 | int tmp; |
182 | |
183 | if ((pcd - 1) & ~0x3f) { |
184 | fprintf(stderr, "pollux_set: invalid lcd clkdiv0: %d\n", pcd); |
185 | return -1; |
186 | } |
187 | |
188 | pcd = (pcd - 1) & 0x3f; |
189 | tmp = memregs[0x31c4>>1]; |
190 | memregs[0x31c4>>1] = (tmp & ~0x3f0) | (pcd << 4); |
191 | |
192 | return 0; |
193 | } |
194 | |
195 | static int apply_cpuclk(volatile unsigned short *memregs, void *data) |
196 | { |
197 | volatile unsigned int *memregl = (volatile void *)memregs; |
198 | int mhz = *(int *)data; |
199 | int mdiv, pdiv, sdiv = 0; |
200 | int i, v; |
201 | |
202 | // m = MDIV, p = PDIV, s = SDIV |
203 | #define SYS_CLK_FREQ 27 |
204 | pdiv = 9; |
205 | mdiv = (mhz * pdiv) / SYS_CLK_FREQ; |
206 | if (mdiv & ~0x3ff) |
207 | return -1; |
208 | v = (pdiv<<18) | (mdiv<<8) | sdiv; |
209 | |
210 | memregl[0xf004>>2] = v; |
211 | memregl[0xf07c>>2] |= 0x8000; |
212 | for (i = 0; (memregl[0xf07c>>2] & 0x8000) && i < 0x100000; i++) |
213 | ; |
214 | |
215 | return 0; |
216 | } |
217 | |
218 | static int lcd_timings[8]; |
219 | static int ram_timings[7]; |
220 | static int dpc_clkdiv0; |
221 | static int cpuclk; |
222 | |
223 | static const char lcd_t_help[] = "htotal,hswidth,hastart,haend,vtotal,vswidth,vastart,vaend"; |
224 | static const char ram_t_help[] = "CAS,tRC,tRAS,tWR,tMRD,tRP,tRCD"; |
225 | |
226 | static const struct { |
227 | const char *name; |
228 | const char *help; |
229 | int (*parse)(const char *str, void *data); |
230 | int (*apply)(volatile unsigned short *memregs, void *data); |
231 | void *data; |
232 | } |
233 | all_params[] = { |
234 | { "lcd_timings", lcd_t_help, parse_lcd_timings, apply_lcd_timings, lcd_timings }, |
235 | { "ram_timings", ram_t_help, parse_ram_timings, apply_ram_timings, ram_timings }, |
236 | { "dpc_clkdiv0", "divider", parse_decimal, apply_dpc_clkdiv0, &dpc_clkdiv0 }, |
237 | { "clkdiv0", "divider", parse_decimal, apply_dpc_clkdiv0, &dpc_clkdiv0 }, /* alias */ |
238 | { "cpuclk", "MHZ", parse_decimal, apply_cpuclk, &cpuclk }, |
239 | }; |
240 | #define ALL_PARAM_COUNT (sizeof(all_params) / sizeof(all_params[0])) |
241 | |
242 | /* |
243 | * set timings based on preformated string |
244 | * returns 0 on success. |
245 | */ |
246 | int pollux_set(volatile unsigned short *memregs, const char *str) |
247 | { |
248 | int parsed_params[ALL_PARAM_COUNT]; |
249 | int applied_params[ALL_PARAM_COUNT]; |
250 | int applied_something = 0; |
251 | const char *p, *po; |
252 | int i, ret; |
253 | |
254 | if (str == NULL) |
255 | return -1; |
256 | |
257 | memset(parsed_params, 0, sizeof(parsed_params)); |
258 | memset(applied_params, 0, sizeof(applied_params)); |
259 | |
260 | p = str; |
261 | while (1) |
262 | { |
263 | again: |
264 | while (*p == ';' || *p == ' ') |
265 | p++; |
266 | if (*p == 0) |
267 | break; |
268 | |
269 | for (i = 0; i < ALL_PARAM_COUNT; i++) |
270 | { |
271 | int param_len = strlen(all_params[i].name); |
272 | if (strncmp(p, all_params[i].name, param_len) == 0 && p[param_len] == '=') |
273 | { |
274 | p += param_len + 1; |
275 | ret = all_params[i].parse(p, all_params[i].data); |
276 | if (ret < 0) { |
277 | fprintf(stderr, "pollux_set parser: error at %-10s\n", p); |
278 | fprintf(stderr, " valid format is: <%s>\n", all_params[i].help); |
279 | return -1; |
280 | } |
281 | parsed_params[i] = 1; |
282 | p += ret; |
283 | goto again; |
284 | } |
285 | } |
286 | |
287 | /* Unknown param. Attempt to be forward compatible and ignore it. */ |
288 | for (po = p; *p != 0 && *p != ';'; p++) |
289 | ; |
290 | |
291 | fprintf(stderr, "unhandled param: "); |
292 | fwrite(po, 1, p - po, stderr); |
293 | fprintf(stderr, "\n"); |
294 | } |
295 | |
296 | /* validate and apply */ |
297 | for (i = 0; i < ALL_PARAM_COUNT; i++) |
298 | { |
299 | if (!parsed_params[i]) |
300 | continue; |
301 | |
302 | ret = all_params[i].apply(memregs, all_params[i].data); |
303 | if (ret < 0) { |
304 | fprintf(stderr, "pollux_set: failed to apply %s (bad value?)\n", |
305 | all_params[i].name); |
306 | continue; |
307 | } |
308 | |
309 | applied_something = 1; |
310 | applied_params[i] = 1; |
311 | } |
312 | |
313 | if (applied_something) |
314 | { |
315 | int c; |
316 | printf("applied: "); |
317 | for (i = c = 0; i < ALL_PARAM_COUNT; i++) |
318 | { |
319 | if (!applied_params[i]) |
320 | continue; |
321 | if (c != 0) |
322 | printf(", "); |
323 | printf("%s", all_params[i].name); |
324 | c++; |
325 | } |
326 | printf("\n"); |
327 | } |
328 | |
329 | return 0; |
330 | } |
331 | |
332 | #ifdef BINARY |
333 | #include <sys/types.h> |
334 | #include <sys/stat.h> |
335 | #include <fcntl.h> |
336 | #include <sys/mman.h> |
337 | #include <unistd.h> |
338 | |
339 | static void usage(const char *binary) |
340 | { |
341 | int i; |
342 | printf("usage:\n%s <set_str[;set_str[;...]]>\n" |
343 | "set_str:\n", binary); |
344 | for (i = 0; i < ALL_PARAM_COUNT; i++) |
345 | printf(" %s=<%s>\n", all_params[i].name, all_params[i].help); |
346 | } |
347 | |
348 | int main(int argc, char *argv[]) |
349 | { |
350 | volatile unsigned short *memregs; |
351 | int ret, memdev; |
352 | |
353 | if (argc != 2) { |
354 | usage(argv[0]); |
355 | return 1; |
356 | } |
357 | |
358 | memdev = open("/dev/mem", O_RDWR); |
359 | if (memdev == -1) |
360 | { |
361 | perror("open(/dev/mem) failed"); |
362 | return 1; |
363 | } |
364 | |
365 | memregs = mmap(0, 0x20000, PROT_READ|PROT_WRITE, MAP_SHARED, memdev, 0xc0000000); |
366 | if (memregs == MAP_FAILED) |
367 | { |
368 | perror("mmap(memregs) failed"); |
369 | close(memdev); |
370 | return 1; |
371 | } |
372 | |
373 | ret = pollux_set(memregs, argv[1]); |
374 | |
375 | munmap((void *)memregs, 0x20000); |
376 | close(memdev); |
377 | |
378 | return ret; |
379 | } |
380 | #endif |