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" |
39014486 |
27 | #include "../linux/sndout_oss.h" |
a86e9a3e |
28 | #include "../plat.h" |
d572cbad |
29 | |
7ceadd99 |
30 | static int mixerdev = -1; |
d572cbad |
31 | static int touchdev = -1; |
32 | static int touchcal[7] = { 6203, 0, -1501397, 0, -4200, 16132680, 65536 }; |
33 | |
71769e27 |
34 | static char gamma_was_changed = 0; |
35 | static char cpuclk_was_changed = 0; |
71769e27 |
36 | static unsigned short memtimex_old[2]; |
37 | static unsigned short reg0910; |
d572cbad |
38 | |
d572cbad |
39 | /* 940 */ |
40 | void pause940(int yes) |
41 | { |
42 | if (yes) |
7ceadd99 |
43 | memregs[0x0904>>1] &= 0xFFFE; |
d572cbad |
44 | else |
7ceadd99 |
45 | memregs[0x0904>>1] |= 1; |
d572cbad |
46 | } |
47 | |
48 | void reset940(int yes, int bank) |
49 | { |
7ceadd99 |
50 | memregs[0x3B48>>1] = ((yes&1) << 7) | (bank & 0x03); |
d572cbad |
51 | } |
52 | |
fa5e045b |
53 | /* |
54 | * CPU clock |
55 | * Fout = (m * Fin) / (p * 2^s) |
56 | * m = MDIV+8, p = PDIV+2, s = SDIV |
57 | * |
58 | * m = (Fout * p * 2^s) / Fin |
59 | */ |
60 | |
61 | #define SYS_CLK_FREQ 7372800 |
62 | |
7ceadd99 |
63 | static int cpu_current_mhz = 200; |
64 | |
65 | static int mmsp2_clock_get(void) |
66 | { |
67 | // TODO: read the actual value? |
68 | return cpu_current_mhz; |
69 | } |
70 | |
71 | static int mmsp2_clock_set(int mhz) |
fa5e045b |
72 | { |
73 | unsigned int mdiv, pdiv, sdiv = 0; |
74 | unsigned int v; |
75 | int i; |
76 | |
77 | pdiv = 3; |
78 | mdiv = (mhz * pdiv * 1000000) / SYS_CLK_FREQ; |
79 | if (mdiv & ~0xff) { |
80 | fprintf(stderr, "invalid cpuclk MHz: %u\n", mhz); |
7ceadd99 |
81 | return -1; |
fa5e045b |
82 | } |
83 | v = ((mdiv-8)<<8) | ((pdiv-2)<<2) | sdiv; |
7ceadd99 |
84 | memregs[0x910>>1] = v; |
fa5e045b |
85 | |
86 | for (i = 0; i < 10000; i++) |
7ceadd99 |
87 | if (!(memregs[0x902>>1] & 1)) |
fa5e045b |
88 | break; |
71769e27 |
89 | |
90 | cpuclk_was_changed = 1; |
7ceadd99 |
91 | cpu_current_mhz = mhz; |
92 | return 0; |
fa5e045b |
93 | } |
94 | |
95 | /* RAM timings */ |
fa5e045b |
96 | #define TIMING_CHECK(t, adj, mask) \ |
97 | t += adj; \ |
98 | if (t & ~mask) \ |
99 | goto bad |
100 | |
7ceadd99 |
101 | static __attribute__((noinline)) void spend_cycles(int c) |
102 | { |
103 | asm volatile( |
104 | "0: subs %0, %0, #1 ;" |
105 | "bgt 0b" |
106 | : "=r" (c) : "0" (c) : "cc"); |
107 | } |
108 | |
fa8d1331 |
109 | static void set_ram_timing_vals(int tCAS, int tRC, int tRAS, int tWR, int tMRD, int tRFC, int tRP, int tRCD) |
fa5e045b |
110 | { |
111 | int i; |
112 | TIMING_CHECK(tCAS, -2, 0x1); |
113 | TIMING_CHECK(tRC, -1, 0xf); |
114 | TIMING_CHECK(tRAS, -1, 0xf); |
115 | TIMING_CHECK(tWR, -1, 0xf); |
116 | TIMING_CHECK(tMRD, -1, 0xf); |
117 | TIMING_CHECK(tRFC, -1, 0xf); |
118 | TIMING_CHECK(tRP, -1, 0xf); |
119 | TIMING_CHECK(tRCD, -1, 0xf); |
120 | |
121 | /* get spend_cycles() into cache */ |
122 | spend_cycles(1); |
123 | |
7ceadd99 |
124 | memregs[0x3802>>1] = ((tMRD & 0xF) << 12) | ((tRFC & 0xF) << 8) | ((tRP & 0xF) << 4) | (tRCD & 0xF); |
125 | memregs[0x3804>>1] = 0x8000 | ((tCAS & 1) << 12) | ((tRC & 0xF) << 8) | ((tRAS & 0xF) << 4) | (tWR & 0xF); |
fa5e045b |
126 | |
127 | /* be sure we don't access the mem while it's being reprogrammed */ |
128 | spend_cycles(128*1024); |
129 | for (i = 0; i < 8*1024; i++) |
7ceadd99 |
130 | if (!(memregs[0x3804>>1] & 0x8000)) |
fa5e045b |
131 | break; |
132 | |
133 | printf("RAM timings set.\n"); |
134 | return; |
135 | bad: |
136 | fprintf(stderr, "RAM timings invalid.\n"); |
137 | } |
138 | |
fa8d1331 |
139 | static void set_ram_timings_(void) |
140 | { |
141 | /* craigix: --cas 2 --trc 6 --tras 4 --twr 1 --tmrd 1 --trfc 1 --trp 2 --trcd 2 */ |
142 | set_ram_timing_vals(2, 6, 4, 1, 1, 1, 2, 2); |
143 | } |
144 | |
145 | static void unset_ram_timings_(void) |
fa5e045b |
146 | { |
7ceadd99 |
147 | memregs[0x3802>>1] = memtimex_old[0]; |
148 | memregs[0x3804>>1] = memtimex_old[1] | 0x8000; |
fa5e045b |
149 | printf("RAM timings reset to startup values.\n"); |
150 | } |
151 | |
152 | /* LCD refresh */ |
153 | typedef struct |
154 | { |
155 | unsigned short reg, valmask, val; |
156 | } |
157 | reg_setting; |
158 | |
159 | /* 120.00 97/0/2/7|25/ 7/ 7/11/37 */ |
160 | static const reg_setting lcd_rate_120[] = |
161 | { |
162 | { 0x0914, 0xffff, (97<<8)|(0<<2)|2 }, /* UPLLSETVREG */ |
163 | { 0x0924, 0xff00, (2<<14)|(7<<8) }, /* DISPCSETREG */ |
164 | { 0x281A, 0x00ff, 25 }, /* .HSWID(T2) */ |
165 | { 0x281C, 0x00ff, 7 }, /* .HSSTR(T8) */ |
166 | { 0x281E, 0x00ff, 7 }, /* .HSEND(T7) */ |
167 | { 0x2822, 0x01ff, 11 }, /* .VSEND (T9) */ |
168 | { 0x2826, 0x0ff0, 37<<4 }, /* .DESTR(T3) */ |
169 | { 0, 0, 0 } |
170 | }; |
171 | |
172 | /* 100.00 96/0/2/7|29/25/53/15/37 */ |
173 | static const reg_setting lcd_rate_100[] = |
174 | { |
175 | { 0x0914, 0xffff, (96<<8)|(0<<2)|2 }, /* UPLLSETVREG */ |
176 | { 0x0924, 0xff00, (2<<14)|(7<<8) }, /* DISPCSETREG */ |
177 | { 0x281A, 0x00ff, 29 }, /* .HSWID(T2) */ |
178 | { 0x281C, 0x00ff, 25 }, /* .HSSTR(T8) */ |
179 | { 0x281E, 0x00ff, 53 }, /* .HSEND(T7) */ |
180 | { 0x2822, 0x01ff, 15 }, /* .VSEND (T9) */ |
181 | { 0x2826, 0x0ff0, 37<<4 }, /* .DESTR(T3) */ |
182 | { 0, 0, 0 } |
183 | }; |
184 | |
185 | static reg_setting lcd_rate_defaults[] = |
186 | { |
187 | { 0x0914, 0xffff, 0 }, |
188 | { 0x0924, 0xff00, 0 }, |
189 | { 0x281A, 0x00ff, 0 }, |
190 | { 0x281C, 0x00ff, 0 }, |
191 | { 0x281E, 0x00ff, 0 }, |
192 | { 0x2822, 0x01ff, 0 }, |
193 | { 0x2826, 0x0ff0, 0 }, |
194 | { 0, 0, 0 } |
195 | }; |
196 | |
197 | static void get_reg_setting(reg_setting *set) |
198 | { |
199 | for (; set->reg; set++) |
200 | { |
7ceadd99 |
201 | unsigned short val = memregs[set->reg >> 1]; |
fa5e045b |
202 | val &= set->valmask; |
203 | set->val = val; |
204 | } |
205 | } |
206 | |
207 | static void set_reg_setting(const reg_setting *set) |
208 | { |
209 | for (; set->reg; set++) |
210 | { |
7ceadd99 |
211 | unsigned short val = memregs[set->reg >> 1]; |
fa5e045b |
212 | val &= ~set->valmask; |
213 | val |= set->val; |
7ceadd99 |
214 | memregs[set->reg >> 1] = val; |
fa5e045b |
215 | } |
216 | } |
217 | |
7ceadd99 |
218 | static int mmsp2_lcdrate_set(int is_pal) |
fa5e045b |
219 | { |
7ceadd99 |
220 | if (memregs[0x2800>>1] & 0x100) // tv-out |
221 | return 0; |
fa5e045b |
222 | |
223 | printf("setting custom LCD refresh (%d Hz)... ", is_pal ? 100 : 120); |
224 | fflush(stdout); |
225 | |
226 | set_reg_setting(is_pal ? lcd_rate_100 : lcd_rate_120); |
227 | printf("done.\n"); |
7ceadd99 |
228 | return 0; |
fa5e045b |
229 | } |
230 | |
fa8d1331 |
231 | static void unset_lcd_custom_rate_(void) |
fa5e045b |
232 | { |
233 | printf("reset to prev LCD refresh.\n"); |
234 | set_reg_setting(lcd_rate_defaults); |
235 | } |
236 | |
fa8d1331 |
237 | static void set_lcd_gamma_(int g100, int A_SNs_curve) |
fa5e045b |
238 | { |
7ceadd99 |
239 | float gamma = (float) g100 / 100.0f; |
fa5e045b |
240 | int i; |
241 | gamma = 1 / gamma; |
242 | |
7ceadd99 |
243 | if (g100 == 100) |
244 | A_SNs_curve = 0; |
245 | |
fa5e045b |
246 | /* enable gamma */ |
7ceadd99 |
247 | memregs[0x2880>>1] &= ~(1<<12); |
fa5e045b |
248 | |
7ceadd99 |
249 | memregs[0x295C>>1] = 0; |
fa5e045b |
250 | for (i = 0; i < 256; i++) |
251 | { |
252 | unsigned char g; |
253 | unsigned short s; |
254 | const unsigned short grey50=143, grey75=177, grey25=97; |
255 | double blah; |
256 | |
257 | if (A_SNs_curve) |
258 | { |
259 | // The next formula is all about gaussian interpolation |
260 | blah = (( -128 * exp(-powf((float) i/64.0f + 2.0f , 2.0f))) + |
261 | ( -64 * exp(-powf((float) i/64.0f + 1.0f , 2.0f))) + |
262 | (grey25 * exp(-powf((float) i/64.0f - 1.0f , 2.0f))) + |
263 | (grey50 * exp(-powf((float) i/64.0f - 2.0f , 2.0f))) + |
264 | (grey75 * exp(-powf((float) i/64.0f - 3.0f , 2.0f))) + |
265 | ( 256 * exp(-powf((float) i/64.0f - 4.0f , 2.0f))) + |
266 | ( 320 * exp(-powf((float) i/64.0f - 5.0f , 2.0f))) + |
267 | ( 384 * exp(-powf((float) i/64.0f - 6.0f , 2.0f)))) / 1.772637; |
268 | blah += 0.5; |
269 | } |
270 | else |
271 | { |
7ceadd99 |
272 | blah = (double)i; |
fa5e045b |
273 | } |
274 | |
275 | g = (unsigned char)(255.0 * pow(blah/255.0, gamma)); |
276 | //printf("%d : %d\n", i, g); |
277 | s = (g<<8) | g; |
7ceadd99 |
278 | memregs[0x295E>>1]= s; |
279 | memregs[0x295E>>1]= g; |
fa5e045b |
280 | } |
71769e27 |
281 | |
282 | gamma_was_changed = 1; |
fa5e045b |
283 | } |
284 | |
7ceadd99 |
285 | static int mmsp2_gamma_set(int val, int black_level) |
053bef76 |
286 | { |
7ceadd99 |
287 | set_lcd_gamma_(val, 1); |
288 | return 0; |
053bef76 |
289 | } |
d572cbad |
290 | |
291 | /* these are not quite MMSP2 related, |
292 | * more to GP2X F100/F200 consoles themselves. */ |
293 | typedef struct ucb1x00_ts_event |
294 | { |
295 | unsigned short pressure; |
296 | unsigned short x; |
297 | unsigned short y; |
298 | unsigned short pad; |
299 | struct timeval stamp; |
300 | } UCB1X00_TS_EVENT; |
301 | |
302 | int gp2x_touchpad_read(int *x, int *y) |
303 | { |
304 | UCB1X00_TS_EVENT event; |
305 | static int zero_seen = 0; |
306 | int retval; |
307 | |
308 | if (touchdev < 0) return -1; |
309 | |
310 | retval = read(touchdev, &event, sizeof(event)); |
311 | if (retval <= 0) { |
312 | perror("touch read failed"); |
313 | return -1; |
314 | } |
315 | // this is to ignore the messed-up 4.1.x driver |
316 | if (event.pressure == 0) zero_seen = 1; |
317 | |
318 | if (x) *x = (event.x * touchcal[0] + touchcal[2]) >> 16; |
319 | if (y) *y = (event.y * touchcal[4] + touchcal[5]) >> 16; |
320 | // printf("read %i %i %i\n", event.pressure, *x, *y); |
321 | |
322 | return zero_seen ? event.pressure : 0; |
323 | } |
324 | |
325 | static void proc_set(const char *path, const char *val) |
326 | { |
327 | FILE *f; |
328 | char tmp[16]; |
329 | |
330 | f = fopen(path, "w"); |
331 | if (f == NULL) { |
332 | printf("failed to open: %s\n", path); |
333 | return; |
334 | } |
335 | |
336 | fprintf(f, "0\n"); |
337 | fclose(f); |
338 | |
339 | printf("\"%s\" is set to: ", path); |
340 | f = fopen(path, "r"); |
341 | if (f == NULL) { |
342 | printf("(open failed)\n"); |
343 | return; |
344 | } |
345 | |
346 | fgets(tmp, sizeof(tmp), f); |
347 | printf("%s", tmp); |
348 | fclose(f); |
349 | } |
350 | |
7ceadd99 |
351 | static int step_volume(int *volume, int diff) |
352 | { |
353 | int ret, val; |
354 | |
355 | if (mixerdev < 0) |
356 | return -1; |
357 | |
358 | *volume += diff; |
359 | if (*volume >= 100) |
360 | *volume = 100; |
361 | else if (*volume < 0) |
362 | *volume = 0; |
363 | |
364 | val = *volume; |
365 | val |= val << 8; |
366 | |
367 | ret = ioctl(mixerdev, SOUND_MIXER_WRITE_PCM, &val); |
368 | if (ret == -1) { |
369 | perror("WRITE_PCM"); |
370 | return ret; |
371 | } |
372 | |
373 | return 0; |
374 | } |
d572cbad |
375 | |
376 | void mmsp2_init(void) |
377 | { |
d572cbad |
378 | memdev = open("/dev/mem", O_RDWR); |
379 | if (memdev == -1) |
380 | { |
381 | perror("open(\"/dev/mem\")"); |
382 | exit(1); |
383 | } |
384 | |
7ceadd99 |
385 | memregs = mmap(0, 0x10000, PROT_READ|PROT_WRITE, MAP_SHARED, memdev, 0xc0000000); |
386 | if (memregs == MAP_FAILED) |
d572cbad |
387 | { |
388 | perror("mmap(memregs)"); |
389 | exit(1); |
390 | } |
7ceadd99 |
391 | memregl = (volatile unsigned int *) memregs; |
d572cbad |
392 | |
7ceadd99 |
393 | memregs[0x2880>>1] &= ~0x383; // disable cursor, subpict, osd, video layers |
d572cbad |
394 | |
71769e27 |
395 | /* save startup values: LCD refresh */ |
fa5e045b |
396 | get_reg_setting(lcd_rate_defaults); |
397 | |
71769e27 |
398 | /* CPU and RAM timings */ |
7ceadd99 |
399 | reg0910 = memregs[0x0910>>1]; |
400 | memtimex_old[0] = memregs[0x3802>>1]; |
401 | memtimex_old[1] = memregs[0x3804>>1]; |
fa5e045b |
402 | |
403 | /* touchscreen */ |
d572cbad |
404 | touchdev = open("/dev/touchscreen/wm97xx", O_RDONLY); |
405 | if (touchdev >= 0) { |
406 | FILE *pcf = fopen("/etc/pointercal", "r"); |
407 | if (pcf) { |
408 | fscanf(pcf, "%d %d %d %d %d %d %d", &touchcal[0], &touchcal[1], |
409 | &touchcal[2], &touchcal[3], &touchcal[4], &touchcal[5], &touchcal[6]); |
410 | fclose(pcf); |
411 | } |
412 | printf("found touchscreen/wm97xx\n"); |
413 | } |
414 | |
415 | /* disable Linux read-ahead */ |
416 | proc_set("/proc/sys/vm/max-readahead", "0\n"); |
417 | proc_set("/proc/sys/vm/min-readahead", "0\n"); |
fa5e045b |
418 | |
7ceadd99 |
419 | mixerdev = open("/dev/mixer", O_RDWR); |
420 | if (mixerdev == -1) |
421 | perror("open(/dev/mixer)"); |
fa8d1331 |
422 | |
7ceadd99 |
423 | set_ram_timings_(); |
fa8d1331 |
424 | |
7ceadd99 |
425 | plat_target.cpu_clock_get = mmsp2_clock_get; |
426 | plat_target.cpu_clock_set = mmsp2_clock_set; |
427 | plat_target.lcdrate_set = mmsp2_lcdrate_set; |
428 | plat_target.gamma_set = mmsp2_gamma_set; |
429 | plat_target.step_volume = step_volume; |
b5bfb864 |
430 | |
1eb704b6 |
431 | gp2x_get_ticks_ms = plat_get_ticks_ms_good; |
432 | gp2x_get_ticks_us = plat_get_ticks_us_good; |
39014486 |
433 | |
434 | sndout_oss_can_restart = 0; |
d572cbad |
435 | } |
436 | |
437 | void mmsp2_finish(void) |
438 | { |
439 | reset940(1, 3); |
440 | pause940(1); |
d572cbad |
441 | |
fa8d1331 |
442 | unset_lcd_custom_rate_(); |
71769e27 |
443 | if (gamma_was_changed) |
444 | set_lcd_gamma_(100, 0); |
445 | unset_ram_timings_(); |
446 | if (cpuclk_was_changed) |
7ceadd99 |
447 | memregs[0x910>>1] = reg0910; |
fa5e045b |
448 | |
7ceadd99 |
449 | munmap((void *)memregs, 0x10000); |
d572cbad |
450 | close(memdev); |
451 | if (touchdev >= 0) |
452 | close(touchdev); |
7ceadd99 |
453 | if (mixerdev >= 0) |
454 | close(mixerdev); |
d572cbad |
455 | } |