frontend/plat_pollux.c

   1 /*
   2  * (C) Gražvydas "notaz" Ignotas, 2009-2011
   3  *
   4  * This work is licensed under the terms of the GNU GPLv2 or later.
   5  * See the COPYING file in the top-level directory.
   6  */
   7
   8 #include <stdio.h>
   9 #include <stdlib.h>
  10 #include <string.h>
  11 #include <sys/types.h>
  12 #include <sys/stat.h>
  13 #include <fcntl.h>
  14 #include <sys/ioctl.h>
  15 #include <unistd.h>
  16 #include <linux/fb.h>
  17 #include <sys/mman.h>
  18 #include <linux/soundcard.h>
  19
  20 #include "common/input.h"
  21 #include "gp2x/in_gp2x.h"
  22 #include "common/menu.h"
  23 #include "warm/warm.h"
  24 #include "plugin_lib.h"
  25 #include "pl_gun_ts.h"
  26 #include "cspace.h"
  27 #include "blit320.h"
  28 #include "in_tsbutton.h"
  29 #include "main.h"
  30 #include "menu.h"
  31 #include "plat.h"
  32 #include "pcnt.h"
  33
  34 int gp2x_dev_id;
  35
  36 static int fbdev = -1, memdev = -1, battdev = -1, mixerdev = -1;
  37 static volatile unsigned short *memregs;
  38 static volatile unsigned int   *memregl;
  39 static void *fb_vaddrs[2];
  40 static unsigned int fb_paddrs[2];
  41 static int fb_work_buf;
  42 static int cpu_clock_allowed, have_warm;
  43 static unsigned int saved_video_regs[2][6];
  44 #define FB_VRAM_SIZE (320*240*2*2*2) // 2 buffers with space for 24bpp mode
  45
  46 static unsigned short *psx_vram;
  47 static unsigned int psx_vram_padds[512];
  48 static int psx_step, psx_width, psx_height, psx_bpp;
  49 static int psx_offset_x, psx_offset_y;
  50 static int fb_offset_x, fb_offset_y;
  51
  52 // TODO: get rid of this
  53 struct vout_fbdev;
  54 struct vout_fbdev *layer_fb;
  55 int g_layer_x, g_layer_y, g_layer_w, g_layer_h;
  56
  57 int omap_enable_layer(int enabled)
  58 {
  59         return 0;
  60 }
  61
  62 static void *fb_flip(void)
  63 {
  64         memregl[0x406C>>2] = memregl[0x446C>>2] = fb_paddrs[fb_work_buf];
  65         memregl[0x4058>>2] |= 0x10;
  66         memregl[0x4458>>2] |= 0x10;
  67         fb_work_buf ^= 1;
  68         return fb_vaddrs[fb_work_buf];
  69 }
  70
  71 static void pollux_changemode(int bpp, int is_bgr)
  72 {
  73         int code = 0, bytes = 2;
  74         unsigned int r;
  75
  76         printf("changemode: %dbpp %s\n", bpp, is_bgr ? "bgr" : "rgb");
  77
  78         memregl[0x4004>>2] = 0x00ef013f;
  79         memregl[0x4000>>2] |= 1 << 3;
  80
  81         switch (bpp)
  82         {
  83                 case 8:
  84                         code = 0x443a;
  85                         bytes = 1;
  86                         break;
  87                 case 16:
  88                         code = is_bgr ? 0xc342 : 0x4432;
  89                         bytes = 2;
  90                         break;
  91                 case 24:
  92                         code = is_bgr ? 0xc653 : 0x4653;
  93                         bytes = 3;
  94                         break;
  95                 default:
  96                         printf("unhandled bpp request: %d\n", bpp);
  97                         return;
  98         }
  99
 100         // program both MLCs so that TV-out works
 101         memregl[0x405c>>2] = memregl[0x445c>>2] = bytes;
 102         memregl[0x4060>>2] = memregl[0x4460>>2] = 320 * bytes;
 103
 104         r = memregl[0x4058>>2];
 105         r = (r & 0xffff) | (code << 16) | 0x10;
 106         memregl[0x4058>>2] = r;
 107
 108         r = memregl[0x4458>>2];
 109         r = (r & 0xffff) | (code << 16) | 0x10;
 110         memregl[0x4458>>2] = r;
 111 }
 112
 113 /* note: both PLLs are programmed the same way,
 114  * the databook incorrectly states that PLL1 differs */
 115 static int decode_pll(unsigned int reg)
 116 {
 117         long long v;
 118         int p, m, s;
 119
 120         p = (reg >> 18) & 0x3f;
 121         m = (reg >> 8) & 0x3ff;
 122         s = reg & 0xff;
 123
 124         if (p == 0)
 125                 p = 1;
 126
 127         v = 27000000; // master clock
 128         v = v * m / (p << s);
 129         return v;
 130 }
 131
 132 int plat_cpu_clock_get(void)
 133 {
 134         return decode_pll(memregl[0xf004>>2]) / 1000000;
 135 }
 136
 137 int plat_cpu_clock_apply(int mhz)
 138 {
 139         int adiv, mdiv, pdiv, sdiv = 0;
 140         int i, vf000, vf004;
 141
 142         if (!cpu_clock_allowed)
 143                 return -1;
 144         if (mhz == plat_cpu_clock_get())
 145                 return 0;
 146
 147         // m = MDIV, p = PDIV, s = SDIV
 148         #define SYS_CLK_FREQ 27
 149         pdiv = 9;
 150         mdiv = (mhz * pdiv) / SYS_CLK_FREQ;
 151         if (mdiv & ~0x3ff)
 152                 return -1;
 153         vf004 = (pdiv<<18) | (mdiv<<8) | sdiv;
 154
 155         // attempt to keep the AHB divider close to 250, but not higher
 156         for (adiv = 1; mhz / adiv > 250; adiv++)
 157                 ;
 158
 159         vf000 = memregl[0xf000>>2];
 160         vf000 = (vf000 & ~0x3c0) | ((adiv - 1) << 6);
 161         memregl[0xf000>>2] = vf000;
 162         memregl[0xf004>>2] = vf004;
 163         memregl[0xf07c>>2] |= 0x8000;
 164         for (i = 0; (memregl[0xf07c>>2] & 0x8000) && i < 0x100000; i++)
 165                 ;
 166
 167         printf("clock set to %dMHz, AHB set to %dMHz\n", mhz, mhz / adiv);
 168
 169         // stupid pll share hack - must restart audio
 170         extern long SPUopen(void);
 171         extern long SPUclose(void);
 172         SPUclose();
 173         SPUopen();
 174
 175         return 0;
 176 }
 177
 178 int plat_get_bat_capacity(void)
 179 {
 180         unsigned short magic_val = 0;
 181
 182         if (battdev < 0)
 183                 return -1;
 184         if (read(battdev, &magic_val, sizeof(magic_val)) != sizeof(magic_val))
 185                 return -1;
 186         switch (magic_val) {
 187         default:
 188         case 1: return 100;
 189         case 2: return 66;
 190         case 3: return 40;
 191         case 4: return 0;
 192         }
 193 }
 194
 195 #define TIMER_BASE3 0x1980
 196 #define TIMER_REG(x) memregl[(TIMER_BASE3 + x) >> 2]
 197
 198 static __attribute__((unused)) unsigned int timer_get(void)
 199 {
 200         TIMER_REG(0x08) |= 0x48;  /* run timer, latch value */
 201         return TIMER_REG(0);
 202 }
 203
 204 static void timer_cleanup(void)
 205 {
 206         TIMER_REG(0x40) = 0x0c; /* be sure clocks are on */
 207         TIMER_REG(0x08) = 0x23; /* stop the timer, clear irq in case it's pending */
 208         TIMER_REG(0x00) = 0;    /* clear counter */
 209         TIMER_REG(0x40) = 0;    /* clocks off */
 210         TIMER_REG(0x44) = 0;    /* dividers back to default */
 211 }
 212
 213 void plat_video_menu_enter(int is_rom_loaded)
 214 {
 215         if (pl_vout_buf != NULL) {
 216                 if (psx_bpp == 16)
 217                         // have to do rgb conversion for menu bg
 218                         bgr555_to_rgb565(pl_vout_buf, pl_vout_buf, 320*240*2);
 219                 else
 220                         memset(pl_vout_buf, 0, 320*240*2);
 221         }
 222
 223         pollux_changemode(16, 0);
 224 }
 225
 226 void plat_video_menu_begin(void)
 227 {
 228 }
 229
 230 void plat_video_menu_end(void)
 231 {
 232         g_menuscreen_ptr = fb_flip();
 233 }
 234
 235 void plat_video_menu_leave(void)
 236 {
 237         if (psx_vram == NULL) {
 238                 fprintf(stderr, "GPU plugin did not provide vram\n");
 239                 exit(1);
 240         }
 241
 242         if (gp2x_dev_id == GP2X_DEV_CAANOO)
 243                 in_set_config_int(in_name_to_id("evdev:pollux-analog"),
 244                         IN_CFG_ABS_DEAD_ZONE, analog_deadzone);
 245
 246         memset(g_menuscreen_ptr, 0, 320*240 * psx_bpp/8);
 247         g_menuscreen_ptr = fb_flip();
 248         memset(g_menuscreen_ptr, 0, 320*240 * psx_bpp/8);
 249
 250         pollux_changemode(psx_bpp, 1);
 251 }
 252
 253 void *plat_prepare_screenshot(int *w, int *h, int *bpp)
 254 {
 255         bgr555_to_rgb565(pl_vout_buf, pl_vout_buf, 320*240*2);
 256         *w = 320;
 257         *h = 240;
 258         *bpp = psx_bpp;
 259         return pl_vout_buf;
 260 }
 261
 262 static void pl_vout_set_raw_vram(void *vram)
 263 {
 264         int i;
 265
 266         psx_vram = vram;
 267
 268         if (vram == NULL)
 269                 return;
 270
 271         if ((long)psx_vram & 0x7ff)
 272                 fprintf(stderr, "GPU plugin did not align vram\n");
 273
 274         for (i = 0; i < 512; i++) {
 275                 psx_vram[i * 1024] = 0; // touch
 276                 psx_vram_padds[i] = warm_virt2phys(&psx_vram[i * 1024]);
 277         }
 278 }
 279
 280 static void spend_cycles(int loops)
 281 {
 282         asm volatile (
 283                 "   mov  r0,%0    ;\n"
 284                 "0: subs r0,r0,#1 ;\n"
 285                 "   bgt  0b"
 286                 :: "r" (loops) : "cc", "r0");
 287 }
 288
 289 #define DMA_BASE6 0x0300
 290 #define DMA_REG(x) memregl[(DMA_BASE6 + x) >> 2]
 291
 292 /* this takes ~1.5ms, while ldm/stm ~1.95ms */
 293 static void raw_flip_dma(int x, int y)
 294 {
 295         unsigned int dst = fb_paddrs[fb_work_buf] +
 296                         (fb_offset_y * 320 + fb_offset_x) * psx_bpp / 8;
 297         int spsx_line = y + psx_offset_y;
 298         int spsx_offset = (x + psx_offset_x) & 0x3f8;
 299         int dst_stride = 320 * psx_bpp / 8;
 300         int len = psx_width * psx_bpp / 8;
 301         int i;
 302
 303         warm_cache_op_all(WOP_D_CLEAN);
 304         pcnt_start(PCNT_BLIT);
 305
 306         dst &= ~7;
 307         len &= ~7;
 308
 309         if (DMA_REG(0x0c) & 0x90000) {
 310                 printf("already runnig DMA?\n");
 311                 DMA_REG(0x0c) = 0x100000;
 312         }
 313         if ((DMA_REG(0x2c) & 0x0f) < 5) {
 314                 printf("DMA queue busy?\n");
 315                 DMA_REG(0x24) = 1;
 316         }
 317
 318         for (i = psx_height; i > 0; i--, spsx_line += psx_step, dst += dst_stride) {
 319                 while ((DMA_REG(0x2c) & 0x0f) < 4)
 320                         spend_cycles(10);
 321
 322                 // XXX: it seems we must always set all regs, what is autoincrement there for?
 323                 DMA_REG(0x20) = 1;              // queue wait cmd
 324                 DMA_REG(0x10) = psx_vram_padds[spsx_line & 511] + spsx_offset * 2; // DMA src
 325                 DMA_REG(0x14) = dst;            // DMA dst
 326                 DMA_REG(0x18) = len - 1;        // len
 327                 DMA_REG(0x1c) = 0x80000;        // go
 328         }
 329
 330         if (psx_bpp == 16) {
 331                 pl_vout_buf = g_menuscreen_ptr;
 332                 pl_print_hud(320, fb_offset_y + psx_height, fb_offset_x);
 333         }
 334
 335         g_menuscreen_ptr = fb_flip();
 336         pl_flip_cnt++;
 337
 338         pcnt_end(PCNT_BLIT);
 339 }
 340
 341 #define make_flip_func(name, blitfunc)                                                  \
 342 static void name(int x, int y)                                                          \
 343 {                                                                                       \
 344         unsigned short *vram = psx_vram;                                                \
 345         unsigned char *dst = (unsigned char *)g_menuscreen_ptr +                        \
 346                         (fb_offset_y * 320 + fb_offset_x) * psx_bpp / 8;                \
 347         unsigned int src = (y + psx_offset_y) * 1024 + x + psx_offset_x;                \
 348         int dst_stride = 320 * psx_bpp / 8;                                             \
 349         int len = psx_width * psx_bpp / 8;                                              \
 350         int i;                                                                          \
 351                                                                                         \
 352         pcnt_start(PCNT_BLIT);                                                          \
 353                                                                                         \
 354         for (i = psx_height; i > 0; i--, src += psx_step * 1024, dst += dst_stride) {   \
 355                 src &= 1024*512-1;                                                      \
 356                 blitfunc(dst, vram + src, len);                                         \
 357         }                                                                               \
 358                                                                                         \
 359         if (psx_bpp == 16) {                                                            \
 360                 pl_vout_buf = g_menuscreen_ptr;                                         \
 361                 pl_print_hud(320, fb_offset_y + psx_height, fb_offset_x);               \
 362         }                                                                               \
 363                                                                                         \
 364         g_menuscreen_ptr = fb_flip();                                                   \
 365         pl_flip_cnt++;                                                                  \
 366                                                                                         \
 367         pcnt_end(PCNT_BLIT);                                                            \
 368 }
 369
 370 make_flip_func(raw_flip_soft, memcpy)
 371 make_flip_func(raw_flip_soft_368, blit320_368)
 372 make_flip_func(raw_flip_soft_512, blit320_512)
 373 make_flip_func(raw_flip_soft_640, blit320_640)
 374
 375 static void *pl_vout_set_mode(int w, int h, int bpp)
 376 {
 377         static int old_w, old_h, old_bpp;
 378         int poff_w, poff_h, w_max;
 379
 380         if (!w || !h || !bpp || (w == old_w && h == old_h && bpp == old_bpp))
 381                 return NULL;
 382
 383         printf("psx mode: %dx%d@%d\n", w, h, bpp);
 384
 385         switch (w + (bpp != 16)) {
 386         case 640:
 387                 pl_rearmed_cbs.pl_vout_raw_flip = raw_flip_soft_640;
 388                 w_max = 640;
 389                 break;
 390         case 512:
 391                 pl_rearmed_cbs.pl_vout_raw_flip = raw_flip_soft_512;
 392                 w_max = 512;
 393                 break;
 394         case 384:
 395         case 368:
 396                 pl_rearmed_cbs.pl_vout_raw_flip = raw_flip_soft_368;
 397                 w_max = 368;
 398                 break;
 399         default:
 400                 pl_rearmed_cbs.pl_vout_raw_flip = have_warm ? raw_flip_dma : raw_flip_soft;
 401                 w_max = 320;
 402                 break;
 403         }
 404
 405         psx_step = 1;
 406         if (h > 256) {
 407                 psx_step = 2;
 408                 h /= 2;
 409         }
 410
 411         poff_w = poff_h = 0;
 412         if (w > w_max) {
 413                 poff_w = w / 2 - w_max / 2;
 414                 w = w_max;
 415         }
 416         fb_offset_x = 0;
 417         if (w < 320)
 418                 fb_offset_x = 320/2 - w / 2;
 419         if (h > 240) {
 420                 poff_h = h / 2 - 240/2;
 421                 h = 240;
 422         }
 423         fb_offset_y = 240/2 - h / 2;
 424
 425         psx_offset_x = poff_w;
 426         psx_offset_y = poff_h;
 427         psx_width = w;
 428         psx_height = h;
 429         psx_bpp = bpp;
 430
 431         if (fb_offset_x || fb_offset_y) {
 432                 // not fullscreen, must clear borders
 433                 memset(g_menuscreen_ptr, 0, 320*240 * psx_bpp/8);
 434                 g_menuscreen_ptr = fb_flip();
 435                 memset(g_menuscreen_ptr, 0, 320*240 * psx_bpp/8);
 436         }
 437
 438         pollux_changemode(bpp, 1);
 439
 440         pl_set_gun_rect(fb_offset_x, fb_offset_y, w > 320 ? 320 : w, h);
 441
 442         return NULL;
 443 }
 444
 445 static void *pl_vout_flip(void)
 446 {
 447         return NULL;
 448 }
 449
 450 static void save_multiple_regs(unsigned int *dest, int base, int count)
 451 {
 452         const volatile unsigned int *regs = memregl + base / 4;
 453         int i;
 454
 455         for (i = 0; i < count; i++)
 456                 dest[i] = regs[i];
 457 }
 458
 459 static void restore_multiple_regs(int base, const unsigned int *src, int count)
 460 {
 461         volatile unsigned int *regs = memregl + base / 4;
 462         int i;
 463
 464         for (i = 0; i < count; i++)
 465                 regs[i] = src[i];
 466 }
 467
 468 void plat_init(void)
 469 {
 470         const char *main_fb_name = "/dev/fb0";
 471         struct fb_fix_screeninfo fbfix;
 472         int rate, timer_div, timer_div2;
 473         int fbdev, ret, warm_ret;
 474         FILE *f;
 475
 476         memdev = open("/dev/mem", O_RDWR);
 477         if (memdev == -1) {
 478                 perror("open(/dev/mem) failed");
 479                 exit(1);
 480         }
 481
 482         memregs = mmap(0, 0x20000, PROT_READ|PROT_WRITE, MAP_SHARED, memdev, 0xc0000000);
 483         if (memregs == MAP_FAILED) {
 484                 perror("mmap(memregs) failed");
 485                 exit(1);
 486         }
 487         memregl = (volatile void *)memregs;
 488
 489         // save video regs of both MLCs
 490         save_multiple_regs(saved_video_regs[0], 0x4058, ARRAY_SIZE(saved_video_regs[0]));
 491         save_multiple_regs(saved_video_regs[1], 0x4458, ARRAY_SIZE(saved_video_regs[1]));
 492
 493         fbdev = open(main_fb_name, O_RDWR);
 494         if (fbdev == -1) {
 495                 fprintf(stderr, "%s: ", main_fb_name);
 496                 perror("open");
 497                 exit(1);
 498         }
 499
 500         ret = ioctl(fbdev, FBIOGET_FSCREENINFO, &fbfix);
 501         if (ret == -1) {
 502                 perror("ioctl(fbdev) failed");
 503                 exit(1);
 504         }
 505         printf("framebuffer: \"%s\" @ %08lx\n", fbfix.id, fbfix.smem_start);
 506         fb_paddrs[0] = fbfix.smem_start;
 507         fb_paddrs[1] = fb_paddrs[0] + 320*240*4; // leave space for 24bpp
 508
 509         fb_vaddrs[0] = mmap(0, FB_VRAM_SIZE, PROT_READ|PROT_WRITE,
 510                                 MAP_SHARED, memdev, fb_paddrs[0]);
 511         if (fb_vaddrs[0] == MAP_FAILED) {
 512                 perror("mmap(fb_vaddrs) failed");
 513                 exit(1);
 514         }
 515         fb_vaddrs[1] = (char *)fb_vaddrs[0] + 320*240*4;
 516
 517         pollux_changemode(16, 0);
 518         g_menuscreen_w = 320;
 519         g_menuscreen_h = 240;
 520         g_menuscreen_ptr = fb_flip();
 521
 522         g_menubg_ptr = calloc(320*240*2, 1);
 523         if (g_menubg_ptr == NULL) {
 524                 fprintf(stderr, "OOM\n");
 525                 exit(1);
 526         }
 527
 528         warm_ret = warm_init();
 529         have_warm = warm_ret == 0;
 530         warm_change_cb_upper(WCB_B_BIT, 1);
 531
 532         /* some firmwares have sys clk on PLL0, we can't adjust CPU clock
 533          * by reprogramming the PLL0 then, as it overclocks system bus */
 534         if ((memregl[0xf000>>2] & 0x03000030) == 0x01000000)
 535                 cpu_clock_allowed = 1;
 536         else {
 537                 cpu_clock_allowed = 0;
 538                 fprintf(stderr, "unexpected PLL config (%08x), overclocking disabled\n",
 539                         memregl[0xf000>>2]);
 540         }
 541
 542         /* find what PLL1 runs at, for the timer */
 543         rate = decode_pll(memregl[0xf008>>2]);
 544         printf("PLL1 @ %dHz\n", rate);
 545
 546         /* setup timer */
 547         timer_div = (rate + 500000) / 1000000;
 548         timer_div2 = 0;
 549         while (timer_div > 256) {
 550                 timer_div /= 2;
 551                 timer_div2++;
 552         }
 553         if (1 <= timer_div && timer_div <= 256 && timer_div2 < 4) {
 554                 int timer_rate = (rate >> timer_div2) / timer_div;
 555                 if (TIMER_REG(0x08) & 8) {
 556                         fprintf(stderr, "warning: timer in use, overriding!\n");
 557                         timer_cleanup();
 558                 }
 559                 if (timer_rate != 1000000)
 560                         fprintf(stderr, "warning: timer drift %d us\n", timer_rate - 1000000);
 561
 562                 timer_div2 = (timer_div2 + 3) & 3;
 563                 TIMER_REG(0x44) = ((timer_div - 1) << 4) | 2;   /* using PLL1 */
 564                 TIMER_REG(0x40) = 0x0c;                         /* clocks on */
 565                 TIMER_REG(0x08) = 0x68 | timer_div2;            /* run timer, clear irq, latch value */
 566         }
 567         else
 568                 fprintf(stderr, "warning: could not make use of timer\n");
 569
 570         /* setup DMA */
 571         DMA_REG(0x0c) = 0x20000; // pending IRQ clear
 572
 573         battdev = open("/dev/pollux_batt", O_RDONLY);
 574         if (battdev < 0)
 575                 perror("Warning: could't open pollux_batt");
 576
 577         f = fopen("/dev/accel", "rb");
 578         if (f) {
 579                 printf("detected Caanoo\n");
 580                 gp2x_dev_id = GP2X_DEV_CAANOO;
 581                 fclose(f);
 582         }
 583         else {
 584                 printf("detected Wiz\n");
 585                 gp2x_dev_id = GP2X_DEV_WIZ;
 586                 in_gp2x_init();
 587         }
 588
 589         mixerdev = open("/dev/mixer", O_RDWR);
 590         if (mixerdev == -1)
 591                 perror("open(/dev/mixer)");
 592
 593         pl_rearmed_cbs.pl_vout_flip = pl_vout_flip;
 594         pl_rearmed_cbs.pl_vout_raw_flip = have_warm ? raw_flip_dma : raw_flip_soft;
 595         pl_rearmed_cbs.pl_vout_set_mode = pl_vout_set_mode;
 596         pl_rearmed_cbs.pl_vout_set_raw_vram = pl_vout_set_raw_vram;
 597
 598         psx_width = 320;
 599         psx_height = 240;
 600         psx_bpp = 16;
 601
 602         in_tsbutton_init();
 603 }
 604
 605 void plat_finish(void)
 606 {
 607         warm_finish();
 608         timer_cleanup();
 609
 610         memset(fb_vaddrs[0], 0, FB_VRAM_SIZE);
 611         restore_multiple_regs(0x4058, saved_video_regs[0], ARRAY_SIZE(saved_video_regs[0]));
 612         restore_multiple_regs(0x4458, saved_video_regs[1], ARRAY_SIZE(saved_video_regs[1]));
 613         memregl[0x4058>>2] |= 0x10;
 614         memregl[0x4458>>2] |= 0x10;
 615         munmap(fb_vaddrs[0], FB_VRAM_SIZE);
 616         close(fbdev);
 617
 618         if (battdev >= 0)
 619                 close(battdev);
 620         if (mixerdev >= 0)
 621                 close(mixerdev);
 622         munmap((void *)memregs, 0x20000);
 623         close(memdev);
 624 }
 625
 626 void in_update_analogs(void)
 627 {
 628 }
 629
 630 /* Caanoo stuff, perhaps move later */
 631 #include <linux/input.h>
 632
 633 struct in_default_bind in_evdev_defbinds[] = {
 634         { KEY_UP,       IN_BINDTYPE_PLAYER12, DKEY_UP },
 635         { KEY_DOWN,     IN_BINDTYPE_PLAYER12, DKEY_DOWN },
 636         { KEY_LEFT,     IN_BINDTYPE_PLAYER12, DKEY_LEFT },
 637         { KEY_RIGHT,    IN_BINDTYPE_PLAYER12, DKEY_RIGHT },
 638         { BTN_TOP,      IN_BINDTYPE_PLAYER12, DKEY_TRIANGLE },
 639         { BTN_THUMB,    IN_BINDTYPE_PLAYER12, DKEY_CROSS },
 640         { BTN_THUMB2,   IN_BINDTYPE_PLAYER12, DKEY_CIRCLE },
 641         { BTN_TRIGGER,  IN_BINDTYPE_PLAYER12, DKEY_SQUARE },
 642         { BTN_BASE3,    IN_BINDTYPE_PLAYER12, DKEY_START },
 643         { BTN_BASE4,    IN_BINDTYPE_PLAYER12, DKEY_SELECT },
 644         { BTN_TOP2,     IN_BINDTYPE_PLAYER12, DKEY_L1 },
 645         { BTN_PINKIE,   IN_BINDTYPE_PLAYER12, DKEY_R1 },
 646         { BTN_BASE,     IN_BINDTYPE_EMU, SACTION_ENTER_MENU },
 647         { 0, 0, 0 },
 648 };
 649
 650 static const char * const caanoo_keys[KEY_MAX + 1] = {
 651         [0 ... KEY_MAX] = NULL,
 652         [KEY_UP]        = "Up",
 653         [KEY_LEFT]      = "Left",
 654         [KEY_RIGHT]     = "Right",
 655         [KEY_DOWN]      = "Down",
 656         [BTN_TRIGGER]   = "A",
 657         [BTN_THUMB]     = "X",
 658         [BTN_THUMB2]    = "B",
 659         [BTN_TOP]       = "Y",
 660         [BTN_TOP2]      = "L",
 661         [BTN_PINKIE]    = "R",
 662         [BTN_BASE]      = "Home",
 663         [BTN_BASE2]     = "Lock",
 664         [BTN_BASE3]     = "I",
 665         [BTN_BASE4]     = "II",
 666         [BTN_BASE5]     = "Push",
 667 };
 668
 669 /* Wiz stuff */
 670 struct in_default_bind in_gp2x_defbinds[] =
 671 {
 672         /* MXYZ SACB RLDU */
 673         { GP2X_BTN_UP,          IN_BINDTYPE_PLAYER12, DKEY_UP },
 674         { GP2X_BTN_DOWN,        IN_BINDTYPE_PLAYER12, DKEY_DOWN },
 675         { GP2X_BTN_LEFT,        IN_BINDTYPE_PLAYER12, DKEY_LEFT },
 676         { GP2X_BTN_RIGHT,       IN_BINDTYPE_PLAYER12, DKEY_RIGHT },
 677         { GP2X_BTN_X,           IN_BINDTYPE_PLAYER12, DKEY_CROSS },
 678         { GP2X_BTN_B,           IN_BINDTYPE_PLAYER12, DKEY_CIRCLE },
 679         { GP2X_BTN_A,           IN_BINDTYPE_PLAYER12, DKEY_SQUARE },
 680         { GP2X_BTN_Y,           IN_BINDTYPE_PLAYER12, DKEY_TRIANGLE },
 681         { GP2X_BTN_L,           IN_BINDTYPE_PLAYER12, DKEY_L1 },
 682         { GP2X_BTN_R,           IN_BINDTYPE_PLAYER12, DKEY_R1 },
 683         { GP2X_BTN_START,       IN_BINDTYPE_PLAYER12, DKEY_START },
 684         { GP2X_BTN_SELECT,      IN_BINDTYPE_EMU, SACTION_ENTER_MENU },
 685         { GP2X_BTN_VOL_UP,      IN_BINDTYPE_EMU, SACTION_VOLUME_UP },
 686         { GP2X_BTN_VOL_DOWN,    IN_BINDTYPE_EMU, SACTION_VOLUME_DOWN },
 687         { 0, 0, 0 },
 688 };
 689
 690 void plat_step_volume(int is_up)
 691 {
 692         static int volume = 50;
 693         int ret, val;
 694
 695         if (mixerdev < 0)
 696                 return;
 697
 698         if (is_up) {
 699                 volume += 5;
 700                 if (volume > 255) volume = 255;
 701         }
 702         else {
 703                 volume -= 5;
 704                 if (volume < 0) volume = 0;
 705         }
 706         val = volume;
 707         val |= val << 8;
 708
 709         ret = ioctl(mixerdev, SOUND_MIXER_WRITE_PCM, &val);
 710         if (ret == -1)
 711                 perror("WRITE_PCM");
 712 }
 713
 714 // unused dummy for in_gp2x
 715 volatile unsigned short *gp2x_memregs;
 716
 717 int plat_rescan_inputs(void)
 718 {
 719         in_probe();
 720         if (gp2x_dev_id == GP2X_DEV_CAANOO)
 721                 in_set_config(in_name_to_id("evdev:pollux-analog"), IN_CFG_KEY_NAMES,
 722                               caanoo_keys, sizeof(caanoo_keys));
 723
 724         return 0;
 725 }