f89d8471 |
1 | /* |
2 | * (C) GraÅžvydas "notaz" Ignotas, 2006-2012 |
3 | * |
4 | * This work is licensed under the terms of any of these licenses |
5 | * (at your option): |
6 | * - GNU GPL, version 2 or later. |
7 | * - GNU LGPL, version 2.1 or later. |
8 | * - MAME license. |
9 | * See the COPYING file in the top-level directory. |
10 | */ |
11 | |
d572cbad |
12 | #include <stdio.h> |
13 | #include <stdlib.h> |
14 | #include <string.h> |
fa5e045b |
15 | #include <math.h> |
d572cbad |
16 | #include <sys/types.h> |
17 | #include <sys/stat.h> |
18 | #include <fcntl.h> |
19 | #include <sys/mman.h> |
7ceadd99 |
20 | #include <sys/ioctl.h> |
d572cbad |
21 | #include <unistd.h> |
7ceadd99 |
22 | #include <linux/soundcard.h> |
d572cbad |
23 | |
24 | #include "soc.h" |
25 | #include "soc_mmsp2.h" |
fa5e045b |
26 | #include "plat_gp2x.h" |
a86e9a3e |
27 | #include "../plat.h" |
d572cbad |
28 | |
7ceadd99 |
29 | static int mixerdev = -1; |
d572cbad |
30 | static int touchdev = -1; |
31 | static int touchcal[7] = { 6203, 0, -1501397, 0, -4200, 16132680, 65536 }; |
32 | |
71769e27 |
33 | static char gamma_was_changed = 0; |
34 | static char cpuclk_was_changed = 0; |
71769e27 |
35 | static unsigned short memtimex_old[2]; |
36 | static unsigned short reg0910; |
d572cbad |
37 | |
d572cbad |
38 | /* 940 */ |
39 | void pause940(int yes) |
40 | { |
41 | if (yes) |
7ceadd99 |
42 | memregs[0x0904>>1] &= 0xFFFE; |
d572cbad |
43 | else |
7ceadd99 |
44 | memregs[0x0904>>1] |= 1; |
d572cbad |
45 | } |
46 | |
47 | void reset940(int yes, int bank) |
48 | { |
7ceadd99 |
49 | memregs[0x3B48>>1] = ((yes&1) << 7) | (bank & 0x03); |
d572cbad |
50 | } |
51 | |
fa5e045b |
52 | /* |
53 | * CPU clock |
54 | * Fout = (m * Fin) / (p * 2^s) |
55 | * m = MDIV+8, p = PDIV+2, s = SDIV |
56 | * |
57 | * m = (Fout * p * 2^s) / Fin |
58 | */ |
59 | |
60 | #define SYS_CLK_FREQ 7372800 |
61 | |
7ceadd99 |
62 | static int cpu_current_mhz = 200; |
63 | |
64 | static int mmsp2_clock_get(void) |
65 | { |
66 | // TODO: read the actual value? |
67 | return cpu_current_mhz; |
68 | } |
69 | |
70 | static int mmsp2_clock_set(int mhz) |
fa5e045b |
71 | { |
72 | unsigned int mdiv, pdiv, sdiv = 0; |
73 | unsigned int v; |
74 | int i; |
75 | |
76 | pdiv = 3; |
77 | mdiv = (mhz * pdiv * 1000000) / SYS_CLK_FREQ; |
78 | if (mdiv & ~0xff) { |
79 | fprintf(stderr, "invalid cpuclk MHz: %u\n", mhz); |
7ceadd99 |
80 | return -1; |
fa5e045b |
81 | } |
82 | v = ((mdiv-8)<<8) | ((pdiv-2)<<2) | sdiv; |
7ceadd99 |
83 | memregs[0x910>>1] = v; |
fa5e045b |
84 | |
85 | for (i = 0; i < 10000; i++) |
7ceadd99 |
86 | if (!(memregs[0x902>>1] & 1)) |
fa5e045b |
87 | break; |
71769e27 |
88 | |
89 | cpuclk_was_changed = 1; |
7ceadd99 |
90 | cpu_current_mhz = mhz; |
91 | return 0; |
fa5e045b |
92 | } |
93 | |
94 | /* RAM timings */ |
fa5e045b |
95 | #define TIMING_CHECK(t, adj, mask) \ |
96 | t += adj; \ |
97 | if (t & ~mask) \ |
98 | goto bad |
99 | |
7ceadd99 |
100 | static __attribute__((noinline)) void spend_cycles(int c) |
101 | { |
102 | asm volatile( |
103 | "0: subs %0, %0, #1 ;" |
104 | "bgt 0b" |
105 | : "=r" (c) : "0" (c) : "cc"); |
106 | } |
107 | |
fa8d1331 |
108 | static void set_ram_timing_vals(int tCAS, int tRC, int tRAS, int tWR, int tMRD, int tRFC, int tRP, int tRCD) |
fa5e045b |
109 | { |
110 | int i; |
111 | TIMING_CHECK(tCAS, -2, 0x1); |
112 | TIMING_CHECK(tRC, -1, 0xf); |
113 | TIMING_CHECK(tRAS, -1, 0xf); |
114 | TIMING_CHECK(tWR, -1, 0xf); |
115 | TIMING_CHECK(tMRD, -1, 0xf); |
116 | TIMING_CHECK(tRFC, -1, 0xf); |
117 | TIMING_CHECK(tRP, -1, 0xf); |
118 | TIMING_CHECK(tRCD, -1, 0xf); |
119 | |
120 | /* get spend_cycles() into cache */ |
121 | spend_cycles(1); |
122 | |
7ceadd99 |
123 | memregs[0x3802>>1] = ((tMRD & 0xF) << 12) | ((tRFC & 0xF) << 8) | ((tRP & 0xF) << 4) | (tRCD & 0xF); |
124 | memregs[0x3804>>1] = 0x8000 | ((tCAS & 1) << 12) | ((tRC & 0xF) << 8) | ((tRAS & 0xF) << 4) | (tWR & 0xF); |
fa5e045b |
125 | |
126 | /* be sure we don't access the mem while it's being reprogrammed */ |
127 | spend_cycles(128*1024); |
128 | for (i = 0; i < 8*1024; i++) |
7ceadd99 |
129 | if (!(memregs[0x3804>>1] & 0x8000)) |
fa5e045b |
130 | break; |
131 | |
132 | printf("RAM timings set.\n"); |
133 | return; |
134 | bad: |
135 | fprintf(stderr, "RAM timings invalid.\n"); |
136 | } |
137 | |
fa8d1331 |
138 | static void set_ram_timings_(void) |
139 | { |
140 | /* craigix: --cas 2 --trc 6 --tras 4 --twr 1 --tmrd 1 --trfc 1 --trp 2 --trcd 2 */ |
141 | set_ram_timing_vals(2, 6, 4, 1, 1, 1, 2, 2); |
142 | } |
143 | |
144 | static void unset_ram_timings_(void) |
fa5e045b |
145 | { |
7ceadd99 |
146 | memregs[0x3802>>1] = memtimex_old[0]; |
147 | memregs[0x3804>>1] = memtimex_old[1] | 0x8000; |
fa5e045b |
148 | printf("RAM timings reset to startup values.\n"); |
149 | } |
150 | |
151 | /* LCD refresh */ |
152 | typedef struct |
153 | { |
154 | unsigned short reg, valmask, val; |
155 | } |
156 | reg_setting; |
157 | |
158 | /* 120.00 97/0/2/7|25/ 7/ 7/11/37 */ |
159 | static const reg_setting lcd_rate_120[] = |
160 | { |
161 | { 0x0914, 0xffff, (97<<8)|(0<<2)|2 }, /* UPLLSETVREG */ |
162 | { 0x0924, 0xff00, (2<<14)|(7<<8) }, /* DISPCSETREG */ |
163 | { 0x281A, 0x00ff, 25 }, /* .HSWID(T2) */ |
164 | { 0x281C, 0x00ff, 7 }, /* .HSSTR(T8) */ |
165 | { 0x281E, 0x00ff, 7 }, /* .HSEND(T7) */ |
166 | { 0x2822, 0x01ff, 11 }, /* .VSEND (T9) */ |
167 | { 0x2826, 0x0ff0, 37<<4 }, /* .DESTR(T3) */ |
168 | { 0, 0, 0 } |
169 | }; |
170 | |
171 | /* 100.00 96/0/2/7|29/25/53/15/37 */ |
172 | static const reg_setting lcd_rate_100[] = |
173 | { |
174 | { 0x0914, 0xffff, (96<<8)|(0<<2)|2 }, /* UPLLSETVREG */ |
175 | { 0x0924, 0xff00, (2<<14)|(7<<8) }, /* DISPCSETREG */ |
176 | { 0x281A, 0x00ff, 29 }, /* .HSWID(T2) */ |
177 | { 0x281C, 0x00ff, 25 }, /* .HSSTR(T8) */ |
178 | { 0x281E, 0x00ff, 53 }, /* .HSEND(T7) */ |
179 | { 0x2822, 0x01ff, 15 }, /* .VSEND (T9) */ |
180 | { 0x2826, 0x0ff0, 37<<4 }, /* .DESTR(T3) */ |
181 | { 0, 0, 0 } |
182 | }; |
183 | |
184 | static reg_setting lcd_rate_defaults[] = |
185 | { |
186 | { 0x0914, 0xffff, 0 }, |
187 | { 0x0924, 0xff00, 0 }, |
188 | { 0x281A, 0x00ff, 0 }, |
189 | { 0x281C, 0x00ff, 0 }, |
190 | { 0x281E, 0x00ff, 0 }, |
191 | { 0x2822, 0x01ff, 0 }, |
192 | { 0x2826, 0x0ff0, 0 }, |
193 | { 0, 0, 0 } |
194 | }; |
195 | |
196 | static void get_reg_setting(reg_setting *set) |
197 | { |
198 | for (; set->reg; set++) |
199 | { |
7ceadd99 |
200 | unsigned short val = memregs[set->reg >> 1]; |
fa5e045b |
201 | val &= set->valmask; |
202 | set->val = val; |
203 | } |
204 | } |
205 | |
206 | static void set_reg_setting(const reg_setting *set) |
207 | { |
208 | for (; set->reg; set++) |
209 | { |
7ceadd99 |
210 | unsigned short val = memregs[set->reg >> 1]; |
fa5e045b |
211 | val &= ~set->valmask; |
212 | val |= set->val; |
7ceadd99 |
213 | memregs[set->reg >> 1] = val; |
fa5e045b |
214 | } |
215 | } |
216 | |
7ceadd99 |
217 | static int mmsp2_lcdrate_set(int is_pal) |
fa5e045b |
218 | { |
7ceadd99 |
219 | if (memregs[0x2800>>1] & 0x100) // tv-out |
220 | return 0; |
fa5e045b |
221 | |
222 | printf("setting custom LCD refresh (%d Hz)... ", is_pal ? 100 : 120); |
223 | fflush(stdout); |
224 | |
225 | set_reg_setting(is_pal ? lcd_rate_100 : lcd_rate_120); |
226 | printf("done.\n"); |
7ceadd99 |
227 | return 0; |
fa5e045b |
228 | } |
229 | |
fa8d1331 |
230 | static void unset_lcd_custom_rate_(void) |
fa5e045b |
231 | { |
232 | printf("reset to prev LCD refresh.\n"); |
233 | set_reg_setting(lcd_rate_defaults); |
234 | } |
235 | |
fa8d1331 |
236 | static void set_lcd_gamma_(int g100, int A_SNs_curve) |
fa5e045b |
237 | { |
7ceadd99 |
238 | float gamma = (float) g100 / 100.0f; |
fa5e045b |
239 | int i; |
240 | gamma = 1 / gamma; |
241 | |
7ceadd99 |
242 | if (g100 == 100) |
243 | A_SNs_curve = 0; |
244 | |
fa5e045b |
245 | /* enable gamma */ |
7ceadd99 |
246 | memregs[0x2880>>1] &= ~(1<<12); |
fa5e045b |
247 | |
7ceadd99 |
248 | memregs[0x295C>>1] = 0; |
fa5e045b |
249 | for (i = 0; i < 256; i++) |
250 | { |
251 | unsigned char g; |
252 | unsigned short s; |
253 | const unsigned short grey50=143, grey75=177, grey25=97; |
254 | double blah; |
255 | |
256 | if (A_SNs_curve) |
257 | { |
258 | // The next formula is all about gaussian interpolation |
259 | blah = (( -128 * exp(-powf((float) i/64.0f + 2.0f , 2.0f))) + |
260 | ( -64 * exp(-powf((float) i/64.0f + 1.0f , 2.0f))) + |
261 | (grey25 * exp(-powf((float) i/64.0f - 1.0f , 2.0f))) + |
262 | (grey50 * exp(-powf((float) i/64.0f - 2.0f , 2.0f))) + |
263 | (grey75 * exp(-powf((float) i/64.0f - 3.0f , 2.0f))) + |
264 | ( 256 * exp(-powf((float) i/64.0f - 4.0f , 2.0f))) + |
265 | ( 320 * exp(-powf((float) i/64.0f - 5.0f , 2.0f))) + |
266 | ( 384 * exp(-powf((float) i/64.0f - 6.0f , 2.0f)))) / 1.772637; |
267 | blah += 0.5; |
268 | } |
269 | else |
270 | { |
7ceadd99 |
271 | blah = (double)i; |
fa5e045b |
272 | } |
273 | |
274 | g = (unsigned char)(255.0 * pow(blah/255.0, gamma)); |
275 | //printf("%d : %d\n", i, g); |
276 | s = (g<<8) | g; |
7ceadd99 |
277 | memregs[0x295E>>1]= s; |
278 | memregs[0x295E>>1]= g; |
fa5e045b |
279 | } |
71769e27 |
280 | |
281 | gamma_was_changed = 1; |
fa5e045b |
282 | } |
283 | |
7ceadd99 |
284 | static int mmsp2_gamma_set(int val, int black_level) |
053bef76 |
285 | { |
7ceadd99 |
286 | set_lcd_gamma_(val, 1); |
287 | return 0; |
053bef76 |
288 | } |
d572cbad |
289 | |
290 | /* these are not quite MMSP2 related, |
291 | * more to GP2X F100/F200 consoles themselves. */ |
292 | typedef struct ucb1x00_ts_event |
293 | { |
294 | unsigned short pressure; |
295 | unsigned short x; |
296 | unsigned short y; |
297 | unsigned short pad; |
298 | struct timeval stamp; |
299 | } UCB1X00_TS_EVENT; |
300 | |
301 | int gp2x_touchpad_read(int *x, int *y) |
302 | { |
303 | UCB1X00_TS_EVENT event; |
304 | static int zero_seen = 0; |
305 | int retval; |
306 | |
307 | if (touchdev < 0) return -1; |
308 | |
309 | retval = read(touchdev, &event, sizeof(event)); |
310 | if (retval <= 0) { |
311 | perror("touch read failed"); |
312 | return -1; |
313 | } |
314 | // this is to ignore the messed-up 4.1.x driver |
315 | if (event.pressure == 0) zero_seen = 1; |
316 | |
317 | if (x) *x = (event.x * touchcal[0] + touchcal[2]) >> 16; |
318 | if (y) *y = (event.y * touchcal[4] + touchcal[5]) >> 16; |
319 | // printf("read %i %i %i\n", event.pressure, *x, *y); |
320 | |
321 | return zero_seen ? event.pressure : 0; |
322 | } |
323 | |
324 | static void proc_set(const char *path, const char *val) |
325 | { |
326 | FILE *f; |
327 | char tmp[16]; |
328 | |
329 | f = fopen(path, "w"); |
330 | if (f == NULL) { |
331 | printf("failed to open: %s\n", path); |
332 | return; |
333 | } |
334 | |
335 | fprintf(f, "0\n"); |
336 | fclose(f); |
337 | |
338 | printf("\"%s\" is set to: ", path); |
339 | f = fopen(path, "r"); |
340 | if (f == NULL) { |
341 | printf("(open failed)\n"); |
342 | return; |
343 | } |
344 | |
345 | fgets(tmp, sizeof(tmp), f); |
346 | printf("%s", tmp); |
347 | fclose(f); |
348 | } |
349 | |
7ceadd99 |
350 | static int step_volume(int *volume, int diff) |
351 | { |
352 | int ret, val; |
353 | |
354 | if (mixerdev < 0) |
355 | return -1; |
356 | |
357 | *volume += diff; |
358 | if (*volume >= 100) |
359 | *volume = 100; |
360 | else if (*volume < 0) |
361 | *volume = 0; |
362 | |
363 | val = *volume; |
364 | val |= val << 8; |
365 | |
366 | ret = ioctl(mixerdev, SOUND_MIXER_WRITE_PCM, &val); |
367 | if (ret == -1) { |
368 | perror("WRITE_PCM"); |
369 | return ret; |
370 | } |
371 | |
372 | return 0; |
373 | } |
d572cbad |
374 | |
375 | void mmsp2_init(void) |
376 | { |
d572cbad |
377 | memdev = open("/dev/mem", O_RDWR); |
378 | if (memdev == -1) |
379 | { |
380 | perror("open(\"/dev/mem\")"); |
381 | exit(1); |
382 | } |
383 | |
7ceadd99 |
384 | memregs = mmap(0, 0x10000, PROT_READ|PROT_WRITE, MAP_SHARED, memdev, 0xc0000000); |
385 | if (memregs == MAP_FAILED) |
d572cbad |
386 | { |
387 | perror("mmap(memregs)"); |
388 | exit(1); |
389 | } |
7ceadd99 |
390 | memregl = (volatile unsigned int *) memregs; |
d572cbad |
391 | |
7ceadd99 |
392 | memregs[0x2880>>1] &= ~0x383; // disable cursor, subpict, osd, video layers |
d572cbad |
393 | |
71769e27 |
394 | /* save startup values: LCD refresh */ |
fa5e045b |
395 | get_reg_setting(lcd_rate_defaults); |
396 | |
71769e27 |
397 | /* CPU and RAM timings */ |
7ceadd99 |
398 | reg0910 = memregs[0x0910>>1]; |
399 | memtimex_old[0] = memregs[0x3802>>1]; |
400 | memtimex_old[1] = memregs[0x3804>>1]; |
fa5e045b |
401 | |
402 | /* touchscreen */ |
d572cbad |
403 | touchdev = open("/dev/touchscreen/wm97xx", O_RDONLY); |
404 | if (touchdev >= 0) { |
405 | FILE *pcf = fopen("/etc/pointercal", "r"); |
406 | if (pcf) { |
407 | fscanf(pcf, "%d %d %d %d %d %d %d", &touchcal[0], &touchcal[1], |
408 | &touchcal[2], &touchcal[3], &touchcal[4], &touchcal[5], &touchcal[6]); |
409 | fclose(pcf); |
410 | } |
411 | printf("found touchscreen/wm97xx\n"); |
412 | } |
413 | |
414 | /* disable Linux read-ahead */ |
415 | proc_set("/proc/sys/vm/max-readahead", "0\n"); |
416 | proc_set("/proc/sys/vm/min-readahead", "0\n"); |
fa5e045b |
417 | |
7ceadd99 |
418 | mixerdev = open("/dev/mixer", O_RDWR); |
419 | if (mixerdev == -1) |
420 | perror("open(/dev/mixer)"); |
fa8d1331 |
421 | |
7ceadd99 |
422 | set_ram_timings_(); |
fa8d1331 |
423 | |
7ceadd99 |
424 | plat_target.cpu_clock_get = mmsp2_clock_get; |
425 | plat_target.cpu_clock_set = mmsp2_clock_set; |
426 | plat_target.lcdrate_set = mmsp2_lcdrate_set; |
427 | plat_target.gamma_set = mmsp2_gamma_set; |
428 | plat_target.step_volume = step_volume; |
b5bfb864 |
429 | |
1eb704b6 |
430 | gp2x_get_ticks_ms = plat_get_ticks_ms_good; |
431 | gp2x_get_ticks_us = plat_get_ticks_us_good; |
d572cbad |
432 | } |
433 | |
434 | void mmsp2_finish(void) |
435 | { |
436 | reset940(1, 3); |
437 | pause940(1); |
d572cbad |
438 | |
fa8d1331 |
439 | unset_lcd_custom_rate_(); |
71769e27 |
440 | if (gamma_was_changed) |
441 | set_lcd_gamma_(100, 0); |
442 | unset_ram_timings_(); |
443 | if (cpuclk_was_changed) |
7ceadd99 |
444 | memregs[0x910>>1] = reg0910; |
fa5e045b |
445 | |
7ceadd99 |
446 | munmap((void *)memregs, 0x10000); |
d572cbad |
447 | close(memdev); |
448 | if (touchdev >= 0) |
449 | close(touchdev); |
7ceadd99 |
450 | if (mixerdev >= 0) |
451 | close(mixerdev); |
d572cbad |
452 | } |