r128fb.c revision 1.38
1 /* $NetBSD: r128fb.c,v 1.38 2013/10/09 17:18:23 macallan Exp $ */ 2 3 /* 4 * Copyright (c) 2007, 2012 Michael Lorenz 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 /* 29 * A console driver for ATI Rage 128 graphics controllers 30 * tested on macppc only so far 31 */ 32 33 #include <sys/cdefs.h> 34 __KERNEL_RCSID(0, "$NetBSD: r128fb.c,v 1.38 2013/10/09 17:18:23 macallan Exp $"); 35 36 #include <sys/param.h> 37 #include <sys/systm.h> 38 #include <sys/kernel.h> 39 #include <sys/device.h> 40 #include <sys/malloc.h> 41 #include <sys/lwp.h> 42 #include <sys/kauth.h> 43 44 #include <dev/videomode/videomode.h> 45 46 #include <dev/pci/pcivar.h> 47 #include <dev/pci/pcireg.h> 48 #include <dev/pci/pcidevs.h> 49 #include <dev/pci/pciio.h> 50 #include <dev/pci/r128fbreg.h> 51 52 #include <dev/wscons/wsdisplayvar.h> 53 #include <dev/wscons/wsconsio.h> 54 #include <dev/wsfont/wsfont.h> 55 #include <dev/rasops/rasops.h> 56 #include <dev/wscons/wsdisplay_vconsvar.h> 57 #include <dev/pci/wsdisplay_pci.h> 58 #include <dev/wscons/wsdisplay_glyphcachevar.h> 59 60 #include <dev/i2c/i2cvar.h> 61 62 #include "opt_r128fb.h" 63 #include "opt_vcons.h" 64 65 #ifdef R128FB_DEBUG 66 #define DPRINTF printf 67 #else 68 #define DPRINTF while(0) printf 69 #endif 70 71 struct r128fb_softc { 72 device_t sc_dev; 73 74 pci_chipset_tag_t sc_pc; 75 pcitag_t sc_pcitag; 76 77 bus_space_tag_t sc_memt; 78 bus_space_tag_t sc_iot; 79 80 bus_space_handle_t sc_regh; 81 bus_addr_t sc_fb, sc_reg; 82 bus_size_t sc_fbsize, sc_regsize; 83 84 int sc_width, sc_height, sc_depth, sc_stride; 85 int sc_locked, sc_have_backlight, sc_bl_level, sc_bl_on; 86 struct vcons_screen sc_console_screen; 87 struct wsscreen_descr sc_defaultscreen_descr; 88 const struct wsscreen_descr *sc_screens[1]; 89 struct wsscreen_list sc_screenlist; 90 struct vcons_data vd; 91 int sc_mode; 92 u_char sc_cmap_red[256]; 93 u_char sc_cmap_green[256]; 94 u_char sc_cmap_blue[256]; 95 /* engine stuff */ 96 uint32_t sc_master_cntl; 97 glyphcache sc_gc; 98 }; 99 100 static int r128fb_match(device_t, cfdata_t, void *); 101 static void r128fb_attach(device_t, device_t, void *); 102 103 CFATTACH_DECL_NEW(r128fb, sizeof(struct r128fb_softc), 104 r128fb_match, r128fb_attach, NULL, NULL); 105 106 static int r128fb_ioctl(void *, void *, u_long, void *, int, 107 struct lwp *); 108 static paddr_t r128fb_mmap(void *, void *, off_t, int); 109 static void r128fb_init_screen(void *, struct vcons_screen *, int, long *); 110 111 static int r128fb_putcmap(struct r128fb_softc *, struct wsdisplay_cmap *); 112 static int r128fb_getcmap(struct r128fb_softc *, struct wsdisplay_cmap *); 113 static void r128fb_restore_palette(struct r128fb_softc *); 114 static int r128fb_putpalreg(struct r128fb_softc *, uint8_t, uint8_t, 115 uint8_t, uint8_t); 116 117 static void r128fb_init(struct r128fb_softc *); 118 static void r128fb_flush_engine(struct r128fb_softc *); 119 static void r128fb_rectfill(struct r128fb_softc *, int, int, int, int, 120 uint32_t); 121 static void r128fb_bitblt(void *, int, int, int, int, int, 122 int, int); 123 124 static void r128fb_cursor(void *, int, int, int); 125 static void r128fb_putchar(void *, int, int, u_int, long); 126 static void r128fb_putchar_aa(void *, int, int, u_int, long); 127 static void r128fb_copycols(void *, int, int, int, int); 128 static void r128fb_erasecols(void *, int, int, int, long); 129 static void r128fb_copyrows(void *, int, int, int); 130 static void r128fb_eraserows(void *, int, int, long); 131 132 static void r128fb_brightness_up(device_t); 133 static void r128fb_brightness_down(device_t); 134 /* set backlight level */ 135 static void r128fb_set_backlight(struct r128fb_softc *, int); 136 /* turn backlight on and off without messing with the level */ 137 static void r128fb_switch_backlight(struct r128fb_softc *, int); 138 139 struct wsdisplay_accessops r128fb_accessops = { 140 r128fb_ioctl, 141 r128fb_mmap, 142 NULL, /* alloc_screen */ 143 NULL, /* free_screen */ 144 NULL, /* show_screen */ 145 NULL, /* load_font */ 146 NULL, /* pollc */ 147 NULL /* scroll */ 148 }; 149 150 static inline void 151 r128fb_wait(struct r128fb_softc *sc, int slots) 152 { 153 uint32_t reg; 154 155 do { 156 reg = (bus_space_read_4(sc->sc_memt, sc->sc_regh, 157 R128_GUI_STAT) & R128_GUI_FIFOCNT_MASK); 158 } while (reg <= slots); 159 } 160 161 static void 162 r128fb_flush_engine(struct r128fb_softc *sc) 163 { 164 uint32_t reg; 165 166 reg = bus_space_read_4(sc->sc_memt, sc->sc_regh, R128_PC_NGUI_CTLSTAT); 167 reg |= R128_PC_FLUSH_ALL; 168 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_PC_NGUI_CTLSTAT, reg); 169 do { 170 reg = bus_space_read_4(sc->sc_memt, sc->sc_regh, 171 R128_PC_NGUI_CTLSTAT); 172 } while (reg & R128_PC_BUSY); 173 } 174 175 static int 176 r128fb_match(device_t parent, cfdata_t match, void *aux) 177 { 178 struct pci_attach_args *pa = (struct pci_attach_args *)aux; 179 180 if (PCI_CLASS(pa->pa_class) != PCI_CLASS_DISPLAY) 181 return 0; 182 if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_ATI) 183 return 0; 184 185 /* only cards tested on so far - likely need a list */ 186 if ((PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_ATI_RAGE1AGP4XT) || 187 (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_ATI_RAGE3AGP4XT) || 188 (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_ATI_RAGEGLPCI) || 189 (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_ATI_RAGE_MOB_M3_AGP)) 190 return 100; 191 return (0); 192 } 193 194 static void 195 r128fb_attach(device_t parent, device_t self, void *aux) 196 { 197 struct r128fb_softc *sc = device_private(self); 198 struct pci_attach_args *pa = aux; 199 struct rasops_info *ri; 200 bus_space_tag_t tag; 201 struct wsemuldisplaydev_attach_args aa; 202 prop_dictionary_t dict; 203 unsigned long defattr; 204 bool is_console; 205 int i, j; 206 uint32_t reg, flags; 207 uint8_t cmap[768]; 208 209 sc->sc_pc = pa->pa_pc; 210 sc->sc_pcitag = pa->pa_tag; 211 sc->sc_memt = pa->pa_memt; 212 sc->sc_iot = pa->pa_iot; 213 sc->sc_dev = self; 214 215 pci_aprint_devinfo(pa, NULL); 216 217 /* fill in parameters from properties */ 218 dict = device_properties(self); 219 if (!prop_dictionary_get_uint32(dict, "width", &sc->sc_width)) { 220 aprint_error("%s: no width property\n", device_xname(self)); 221 return; 222 } 223 if (!prop_dictionary_get_uint32(dict, "height", &sc->sc_height)) { 224 aprint_error("%s: no height property\n", device_xname(self)); 225 return; 226 } 227 228 #ifdef GLYPHCACHE_DEBUG 229 /* leave some visible VRAM unused so we can see the glyph cache */ 230 sc->sc_height -= 200; 231 #endif 232 233 if (!prop_dictionary_get_uint32(dict, "depth", &sc->sc_depth)) { 234 aprint_error("%s: no depth property\n", device_xname(self)); 235 return; 236 } 237 if (!prop_dictionary_get_uint32(dict, "linebytes", &sc->sc_stride)) { 238 aprint_error("%s: no linebytes property\n", 239 device_xname(self)); 240 return; 241 } 242 243 prop_dictionary_get_bool(dict, "is_console", &is_console); 244 245 if (pci_mapreg_info(pa->pa_pc, pa->pa_tag, 0x10, PCI_MAPREG_TYPE_MEM, 246 &sc->sc_fb, &sc->sc_fbsize, &flags)) { 247 aprint_error("%s: failed to map the frame buffer.\n", 248 device_xname(sc->sc_dev)); 249 } 250 251 if (pci_mapreg_map(pa, 0x18, PCI_MAPREG_TYPE_MEM, 0, 252 &tag, &sc->sc_regh, &sc->sc_reg, &sc->sc_regsize)) { 253 aprint_error("%s: failed to map registers.\n", 254 device_xname(sc->sc_dev)); 255 } 256 257 aprint_normal("%s: %d MB aperture at 0x%08x\n", device_xname(self), 258 (int)(sc->sc_fbsize >> 20), (uint32_t)sc->sc_fb); 259 260 sc->sc_defaultscreen_descr = (struct wsscreen_descr){ 261 "default", 262 0, 0, 263 NULL, 264 8, 16, 265 WSSCREEN_WSCOLORS | WSSCREEN_HILIT, 266 NULL 267 }; 268 sc->sc_screens[0] = &sc->sc_defaultscreen_descr; 269 sc->sc_screenlist = (struct wsscreen_list){1, sc->sc_screens}; 270 sc->sc_mode = WSDISPLAYIO_MODE_EMUL; 271 sc->sc_locked = 0; 272 273 vcons_init(&sc->vd, sc, &sc->sc_defaultscreen_descr, 274 &r128fb_accessops); 275 sc->vd.init_screen = r128fb_init_screen; 276 277 /* init engine here */ 278 r128fb_init(sc); 279 280 ri = &sc->sc_console_screen.scr_ri; 281 282 sc->sc_gc.gc_bitblt = r128fb_bitblt; 283 sc->sc_gc.gc_blitcookie = sc; 284 sc->sc_gc.gc_rop = R128_ROP3_S; 285 if (is_console) { 286 vcons_init_screen(&sc->vd, &sc->sc_console_screen, 1, 287 &defattr); 288 sc->sc_console_screen.scr_flags |= VCONS_SCREEN_IS_STATIC; 289 290 r128fb_rectfill(sc, 0, 0, sc->sc_width, sc->sc_height, 291 ri->ri_devcmap[(defattr >> 16) & 0xff]); 292 sc->sc_defaultscreen_descr.textops = &ri->ri_ops; 293 sc->sc_defaultscreen_descr.capabilities = ri->ri_caps; 294 sc->sc_defaultscreen_descr.nrows = ri->ri_rows; 295 sc->sc_defaultscreen_descr.ncols = ri->ri_cols; 296 glyphcache_init(&sc->sc_gc, sc->sc_height + 5, 297 (0x800000 / sc->sc_stride) - sc->sc_height - 5, 298 sc->sc_width, 299 ri->ri_font->fontwidth, 300 ri->ri_font->fontheight, 301 defattr); 302 wsdisplay_cnattach(&sc->sc_defaultscreen_descr, ri, 0, 0, 303 defattr); 304 vcons_replay_msgbuf(&sc->sc_console_screen); 305 } else { 306 /* 307 * since we're not the console we can postpone the rest 308 * until someone actually allocates a screen for us 309 */ 310 if (sc->sc_console_screen.scr_ri.ri_rows == 0) { 311 /* do some minimal setup to avoid weirdnesses later */ 312 vcons_init_screen(&sc->vd, &sc->sc_console_screen, 1, 313 &defattr); 314 } else 315 (*ri->ri_ops.allocattr)(ri, 0, 0, 0, &defattr); 316 glyphcache_init(&sc->sc_gc, sc->sc_height + 5, 317 (0x800000 / sc->sc_stride) - sc->sc_height - 5, 318 sc->sc_width, 319 ri->ri_font->fontwidth, 320 ri->ri_font->fontheight, 321 defattr); 322 } 323 324 j = 0; 325 rasops_get_cmap(ri, cmap, sizeof(cmap)); 326 for (i = 0; i < 256; i++) { 327 sc->sc_cmap_red[i] = cmap[j]; 328 sc->sc_cmap_green[i] = cmap[j + 1]; 329 sc->sc_cmap_blue[i] = cmap[j + 2]; 330 r128fb_putpalreg(sc, i, cmap[j], cmap[j + 1], cmap[j + 2]); 331 j += 3; 332 } 333 334 /* no suspend/resume support yet */ 335 pmf_device_register(sc->sc_dev, NULL, NULL); 336 337 reg = bus_space_read_4(sc->sc_memt, sc->sc_regh, R128_LVDS_GEN_CNTL); 338 DPRINTF("R128_LVDS_GEN_CNTL: %08x\n", reg); 339 if (reg & R128_LVDS_ON) { 340 sc->sc_have_backlight = 1; 341 sc->sc_bl_on = 1; 342 sc->sc_bl_level = 255 - 343 ((reg & R128_LEVEL_MASK) >> R128_LEVEL_SHIFT); 344 pmf_event_register(sc->sc_dev, PMFE_DISPLAY_BRIGHTNESS_UP, 345 r128fb_brightness_up, TRUE); 346 pmf_event_register(sc->sc_dev, PMFE_DISPLAY_BRIGHTNESS_DOWN, 347 r128fb_brightness_down, TRUE); 348 aprint_verbose("%s: LVDS output is active, enabling backlight" 349 " control\n", device_xname(self)); 350 } else 351 sc->sc_have_backlight = 0; 352 353 aa.console = is_console; 354 aa.scrdata = &sc->sc_screenlist; 355 aa.accessops = &r128fb_accessops; 356 aa.accesscookie = &sc->vd; 357 358 config_found(sc->sc_dev, &aa, wsemuldisplaydevprint); 359 } 360 361 static int 362 r128fb_ioctl(void *v, void *vs, u_long cmd, void *data, int flag, 363 struct lwp *l) 364 { 365 struct vcons_data *vd = v; 366 struct r128fb_softc *sc = vd->cookie; 367 struct wsdisplay_fbinfo *wdf; 368 struct vcons_screen *ms = vd->active; 369 struct wsdisplay_param *param; 370 371 switch (cmd) { 372 case WSDISPLAYIO_GTYPE: 373 *(u_int *)data = WSDISPLAY_TYPE_PCIMISC; 374 return 0; 375 376 /* PCI config read/write passthrough. */ 377 case PCI_IOC_CFGREAD: 378 case PCI_IOC_CFGWRITE: 379 return pci_devioctl(sc->sc_pc, sc->sc_pcitag, 380 cmd, data, flag, l); 381 382 case WSDISPLAYIO_GET_BUSID: 383 return wsdisplayio_busid_pci(sc->sc_dev, sc->sc_pc, 384 sc->sc_pcitag, data); 385 386 case WSDISPLAYIO_GINFO: 387 if (ms == NULL) 388 return ENODEV; 389 wdf = (void *)data; 390 wdf->height = ms->scr_ri.ri_height; 391 wdf->width = ms->scr_ri.ri_width; 392 wdf->depth = ms->scr_ri.ri_depth; 393 wdf->cmsize = 256; 394 return 0; 395 396 case WSDISPLAYIO_GETCMAP: 397 return r128fb_getcmap(sc, 398 (struct wsdisplay_cmap *)data); 399 400 case WSDISPLAYIO_PUTCMAP: 401 return r128fb_putcmap(sc, 402 (struct wsdisplay_cmap *)data); 403 404 case WSDISPLAYIO_LINEBYTES: 405 *(u_int *)data = sc->sc_stride; 406 return 0; 407 408 case WSDISPLAYIO_SMODE: { 409 int new_mode = *(int*)data; 410 if (new_mode != sc->sc_mode) { 411 sc->sc_mode = new_mode; 412 if(new_mode == WSDISPLAYIO_MODE_EMUL) { 413 r128fb_init(sc); 414 r128fb_restore_palette(sc); 415 glyphcache_wipe(&sc->sc_gc); 416 r128fb_rectfill(sc, 0, 0, sc->sc_width, 417 sc->sc_height, ms->scr_ri.ri_devcmap[ 418 (ms->scr_defattr >> 16) & 0xff]); 419 vcons_redraw_screen(ms); 420 } 421 } 422 } 423 return 0; 424 425 case WSDISPLAYIO_GETPARAM: 426 param = (struct wsdisplay_param *)data; 427 if (sc->sc_have_backlight == 0) 428 return EPASSTHROUGH; 429 switch (param->param) { 430 case WSDISPLAYIO_PARAM_BRIGHTNESS: 431 param->min = 0; 432 param->max = 255; 433 param->curval = sc->sc_bl_level; 434 return 0; 435 case WSDISPLAYIO_PARAM_BACKLIGHT: 436 param->min = 0; 437 param->max = 1; 438 param->curval = sc->sc_bl_on; 439 return 0; 440 } 441 return EPASSTHROUGH; 442 443 case WSDISPLAYIO_SETPARAM: 444 param = (struct wsdisplay_param *)data; 445 if (sc->sc_have_backlight == 0) 446 return EPASSTHROUGH; 447 switch (param->param) { 448 case WSDISPLAYIO_PARAM_BRIGHTNESS: 449 r128fb_set_backlight(sc, param->curval); 450 return 0; 451 case WSDISPLAYIO_PARAM_BACKLIGHT: 452 r128fb_switch_backlight(sc, param->curval); 453 return 0; 454 } 455 return EPASSTHROUGH; 456 457 case WSDISPLAYIO_GET_EDID: { 458 struct wsdisplayio_edid_info *d = data; 459 return wsdisplayio_get_edid(sc->sc_dev, d); 460 } 461 462 case WSDISPLAYIO_GET_FBINFO: { 463 struct wsdisplayio_fbinfo *fbi = data; 464 return wsdisplayio_get_fbinfo(&ms->scr_ri, fbi); 465 } 466 } 467 return EPASSTHROUGH; 468 } 469 470 static paddr_t 471 r128fb_mmap(void *v, void *vs, off_t offset, int prot) 472 { 473 struct vcons_data *vd = v; 474 struct r128fb_softc *sc = vd->cookie; 475 paddr_t pa; 476 477 /* 'regular' framebuffer mmap()ing */ 478 if (offset < sc->sc_fbsize) { 479 pa = bus_space_mmap(sc->sc_memt, sc->sc_fb + offset, 0, prot, 480 BUS_SPACE_MAP_LINEAR); 481 return pa; 482 } 483 484 /* 485 * restrict all other mappings to processes with superuser privileges 486 * or the kernel itself 487 */ 488 if (kauth_authorize_machdep(kauth_cred_get(), KAUTH_MACHDEP_UNMANAGEDMEM, 489 NULL, NULL, NULL, NULL) != 0) { 490 aprint_normal("%s: mmap() rejected.\n", 491 device_xname(sc->sc_dev)); 492 return -1; 493 } 494 495 if ((offset >= sc->sc_fb) && (offset < (sc->sc_fb + sc->sc_fbsize))) { 496 pa = bus_space_mmap(sc->sc_memt, offset, 0, prot, 497 BUS_SPACE_MAP_LINEAR); 498 return pa; 499 } 500 501 if ((offset >= sc->sc_reg) && 502 (offset < (sc->sc_reg + sc->sc_regsize))) { 503 pa = bus_space_mmap(sc->sc_memt, offset, 0, prot, 504 BUS_SPACE_MAP_LINEAR); 505 return pa; 506 } 507 508 #ifdef PCI_MAGIC_IO_RANGE 509 /* allow mapping of IO space */ 510 if ((offset >= PCI_MAGIC_IO_RANGE) && 511 (offset < PCI_MAGIC_IO_RANGE + 0x10000)) { 512 pa = bus_space_mmap(sc->sc_iot, offset - PCI_MAGIC_IO_RANGE, 513 0, prot, BUS_SPACE_MAP_LINEAR); 514 return pa; 515 } 516 #endif 517 518 #ifdef OFB_ALLOW_OTHERS 519 if (offset >= 0x80000000) { 520 pa = bus_space_mmap(sc->sc_memt, offset, 0, prot, 521 BUS_SPACE_MAP_LINEAR); 522 return pa; 523 } 524 #endif 525 return -1; 526 } 527 528 static void 529 r128fb_init_screen(void *cookie, struct vcons_screen *scr, 530 int existing, long *defattr) 531 { 532 struct r128fb_softc *sc = cookie; 533 struct rasops_info *ri = &scr->scr_ri; 534 535 ri->ri_depth = sc->sc_depth; 536 ri->ri_width = sc->sc_width; 537 ri->ri_height = sc->sc_height; 538 ri->ri_stride = sc->sc_stride; 539 ri->ri_flg = RI_CENTER; 540 if (sc->sc_depth == 8) 541 ri->ri_flg |= RI_8BIT_IS_RGB | RI_ENABLE_ALPHA; 542 543 rasops_init(ri, 0, 0); 544 ri->ri_caps = WSSCREEN_WSCOLORS; 545 #ifdef VCONS_DRAW_INTR 546 scr->scr_flags |= VCONS_DONT_READ; 547 #endif 548 549 rasops_reconfig(ri, sc->sc_height / ri->ri_font->fontheight, 550 sc->sc_width / ri->ri_font->fontwidth); 551 552 ri->ri_hw = scr; 553 ri->ri_ops.copyrows = r128fb_copyrows; 554 ri->ri_ops.copycols = r128fb_copycols; 555 ri->ri_ops.eraserows = r128fb_eraserows; 556 ri->ri_ops.erasecols = r128fb_erasecols; 557 ri->ri_ops.cursor = r128fb_cursor; 558 if (FONT_IS_ALPHA(ri->ri_font)) { 559 ri->ri_ops.putchar = r128fb_putchar_aa; 560 } else 561 ri->ri_ops.putchar = r128fb_putchar; 562 } 563 564 static int 565 r128fb_putcmap(struct r128fb_softc *sc, struct wsdisplay_cmap *cm) 566 { 567 u_char *r, *g, *b; 568 u_int index = cm->index; 569 u_int count = cm->count; 570 int i, error; 571 u_char rbuf[256], gbuf[256], bbuf[256]; 572 573 #ifdef R128FB_DEBUG 574 aprint_debug("putcmap: %d %d\n",index, count); 575 #endif 576 if (cm->index >= 256 || cm->count > 256 || 577 (cm->index + cm->count) > 256) 578 return EINVAL; 579 error = copyin(cm->red, &rbuf[index], count); 580 if (error) 581 return error; 582 error = copyin(cm->green, &gbuf[index], count); 583 if (error) 584 return error; 585 error = copyin(cm->blue, &bbuf[index], count); 586 if (error) 587 return error; 588 589 memcpy(&sc->sc_cmap_red[index], &rbuf[index], count); 590 memcpy(&sc->sc_cmap_green[index], &gbuf[index], count); 591 memcpy(&sc->sc_cmap_blue[index], &bbuf[index], count); 592 593 r = &sc->sc_cmap_red[index]; 594 g = &sc->sc_cmap_green[index]; 595 b = &sc->sc_cmap_blue[index]; 596 597 for (i = 0; i < count; i++) { 598 r128fb_putpalreg(sc, index, *r, *g, *b); 599 index++; 600 r++, g++, b++; 601 } 602 return 0; 603 } 604 605 static int 606 r128fb_getcmap(struct r128fb_softc *sc, struct wsdisplay_cmap *cm) 607 { 608 u_int index = cm->index; 609 u_int count = cm->count; 610 int error; 611 612 if (index >= 255 || count > 256 || index + count > 256) 613 return EINVAL; 614 615 error = copyout(&sc->sc_cmap_red[index], cm->red, count); 616 if (error) 617 return error; 618 error = copyout(&sc->sc_cmap_green[index], cm->green, count); 619 if (error) 620 return error; 621 error = copyout(&sc->sc_cmap_blue[index], cm->blue, count); 622 if (error) 623 return error; 624 625 return 0; 626 } 627 628 static void 629 r128fb_restore_palette(struct r128fb_softc *sc) 630 { 631 int i; 632 633 for (i = 0; i < (1 << sc->sc_depth); i++) { 634 r128fb_putpalreg(sc, i, sc->sc_cmap_red[i], 635 sc->sc_cmap_green[i], sc->sc_cmap_blue[i]); 636 } 637 } 638 639 static int 640 r128fb_putpalreg(struct r128fb_softc *sc, uint8_t idx, uint8_t r, uint8_t g, 641 uint8_t b) 642 { 643 uint32_t reg; 644 645 /* whack the DAC */ 646 reg = (r << 16) | (g << 8) | b; 647 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_PALETTE_INDEX, idx); 648 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_PALETTE_DATA, reg); 649 return 0; 650 } 651 652 static void 653 r128fb_init(struct r128fb_softc *sc) 654 { 655 uint32_t datatype, d, reg; 656 657 r128fb_flush_engine(sc); 658 659 r128fb_wait(sc, 9); 660 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_CRTC_OFFSET, 0); 661 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DEFAULT_OFFSET, 0); 662 /* pitch is in units of 8 pixels */ 663 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DEFAULT_PITCH, 664 sc->sc_width >> 3); 665 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_AUX_SC_CNTL, 0); 666 bus_space_write_4(sc->sc_memt, sc->sc_regh, 667 R128_DEFAULT_SC_BOTTOM_RIGHT, 668 R128_DEFAULT_SC_RIGHT_MAX | R128_DEFAULT_SC_BOTTOM_MAX); 669 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_SC_TOP_LEFT, 0); 670 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_SC_BOTTOM_RIGHT, 671 R128_DEFAULT_SC_RIGHT_MAX | R128_DEFAULT_SC_BOTTOM_MAX); 672 bus_space_write_4(sc->sc_memt, sc->sc_regh, 673 R128_DEFAULT_SC_BOTTOM_RIGHT, 674 R128_DEFAULT_SC_RIGHT_MAX | R128_DEFAULT_SC_BOTTOM_MAX); 675 676 #if 0 677 #if BYTE_ORDER == BIG_ENDIAN 678 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DP_DATATYPE, 679 R128_HOST_BIG_ENDIAN_EN); 680 #else 681 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DP_DATATYPE, 0); 682 #endif 683 #endif 684 r128fb_wait(sc, 7); 685 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_SRC_PITCH, 686 sc->sc_width >> 3); 687 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DST_PITCH, 688 sc->sc_width >> 3); 689 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_SRC_OFFSET, 0); 690 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DST_OFFSET, 0); 691 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DP_WRITE_MASK, 692 0xffffffff); 693 694 switch (sc->sc_depth) { 695 case 8: 696 datatype = R128_GMC_DST_8BPP_CI; 697 d = R128_CRTC_COLOR_8BIT; 698 break; 699 case 15: 700 datatype = R128_GMC_DST_15BPP; 701 d = R128_CRTC_COLOR_15BIT; 702 break; 703 case 16: 704 datatype = R128_GMC_DST_16BPP; 705 d = R128_CRTC_COLOR_16BIT; 706 break; 707 case 24: 708 datatype = R128_GMC_DST_24BPP; 709 d = R128_CRTC_COLOR_24BIT; 710 break; 711 case 32: 712 datatype = R128_GMC_DST_32BPP; 713 d = R128_CRTC_COLOR_32BIT; 714 break; 715 default: 716 aprint_error("%s: unsupported depth %d\n", 717 device_xname(sc->sc_dev), sc->sc_depth); 718 return; 719 } 720 sc->sc_master_cntl = R128_GMC_CLR_CMP_CNTL_DIS | 721 R128_GMC_AUX_CLIP_DIS | datatype; 722 reg = bus_space_read_4(sc->sc_memt, sc->sc_regh, R128_CRTC_GEN_CNTL); 723 DPRINTF("depth: %d\n", reg & R128_CRTC_PIX_WIDTH); 724 reg &= ~R128_CRTC_PIX_WIDTH; 725 reg |= d; 726 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_CRTC_GEN_CNTL, reg); 727 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_CRTC_PITCH, sc->sc_width >> 3); 728 r128fb_flush_engine(sc); 729 } 730 731 static void 732 r128fb_rectfill(struct r128fb_softc *sc, int x, int y, int wi, int he, 733 uint32_t colour) 734 { 735 736 r128fb_wait(sc, 5); 737 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DP_GUI_MASTER_CNTL, 738 R128_GMC_BRUSH_SOLID_COLOR | 739 R128_GMC_SRC_DATATYPE_COLOR | 740 R128_ROP3_P | 741 sc->sc_master_cntl); 742 743 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DP_BRUSH_FRGD_CLR, 744 colour); 745 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DP_CNTL, 746 R128_DST_X_LEFT_TO_RIGHT | R128_DST_Y_TOP_TO_BOTTOM); 747 /* now feed it coordinates */ 748 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DST_X_Y, 749 (x << 16) | y); 750 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DST_WIDTH_HEIGHT, 751 (wi << 16) | he); 752 } 753 754 static void 755 r128fb_bitblt(void *cookie, int xs, int ys, int xd, int yd, 756 int wi, int he, int rop) 757 { 758 struct r128fb_softc *sc = cookie; 759 uint32_t dp_cntl = 0; 760 761 r128fb_wait(sc, 5); 762 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DP_GUI_MASTER_CNTL, 763 R128_GMC_BRUSH_SOLID_COLOR | 764 R128_GMC_SRC_DATATYPE_COLOR | 765 rop | 766 R128_DP_SRC_SOURCE_MEMORY | 767 sc->sc_master_cntl); 768 769 if (yd <= ys) { 770 dp_cntl = R128_DST_Y_TOP_TO_BOTTOM; 771 } else { 772 ys += he - 1; 773 yd += he - 1; 774 } 775 if (xd <= xs) { 776 dp_cntl |= R128_DST_X_LEFT_TO_RIGHT; 777 } else { 778 xs += wi - 1; 779 xd += wi - 1; 780 } 781 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DP_CNTL, dp_cntl); 782 783 /* now feed it coordinates */ 784 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_SRC_X_Y, 785 (xs << 16) | ys); 786 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DST_X_Y, 787 (xd << 16) | yd); 788 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DST_WIDTH_HEIGHT, 789 (wi << 16) | he); 790 } 791 792 static void 793 r128fb_cursor(void *cookie, int on, int row, int col) 794 { 795 struct rasops_info *ri = cookie; 796 struct vcons_screen *scr = ri->ri_hw; 797 struct r128fb_softc *sc = scr->scr_cookie; 798 int x, y, wi, he; 799 800 wi = ri->ri_font->fontwidth; 801 he = ri->ri_font->fontheight; 802 803 if (sc->sc_mode == WSDISPLAYIO_MODE_EMUL) { 804 x = ri->ri_ccol * wi + ri->ri_xorigin; 805 y = ri->ri_crow * he + ri->ri_yorigin; 806 if (ri->ri_flg & RI_CURSOR) { 807 r128fb_bitblt(sc, x, y, x, y, wi, he, R128_ROP3_Dn); 808 ri->ri_flg &= ~RI_CURSOR; 809 } 810 ri->ri_crow = row; 811 ri->ri_ccol = col; 812 if (on) { 813 x = ri->ri_ccol * wi + ri->ri_xorigin; 814 y = ri->ri_crow * he + ri->ri_yorigin; 815 r128fb_bitblt(sc, x, y, x, y, wi, he, R128_ROP3_Dn); 816 ri->ri_flg |= RI_CURSOR; 817 } 818 } else { 819 scr->scr_ri.ri_crow = row; 820 scr->scr_ri.ri_ccol = col; 821 scr->scr_ri.ri_flg &= ~RI_CURSOR; 822 } 823 824 } 825 826 static void 827 r128fb_putchar(void *cookie, int row, int col, u_int c, long attr) 828 { 829 struct rasops_info *ri = cookie; 830 struct wsdisplay_font *font = PICK_FONT(ri, c); 831 struct vcons_screen *scr = ri->ri_hw; 832 struct r128fb_softc *sc = scr->scr_cookie; 833 void *data; 834 uint32_t fg, bg; 835 int i, x, y, wi, he, offset; 836 837 if (sc->sc_mode != WSDISPLAYIO_MODE_EMUL) 838 return; 839 840 if (!CHAR_IN_FONT(c, font)) 841 return; 842 843 wi = font->fontwidth; 844 he = font->fontheight; 845 846 bg = ri->ri_devcmap[(attr >> 16) & 0xf]; 847 fg = ri->ri_devcmap[(attr >> 24) & 0xf]; 848 x = ri->ri_xorigin + col * wi; 849 y = ri->ri_yorigin + row * he; 850 851 if (c == 0x20) { 852 r128fb_rectfill(sc, x, y, wi, he, bg); 853 return; 854 } 855 856 data = WSFONT_GLYPH(c, font); 857 858 r128fb_wait(sc, 8); 859 860 bus_space_write_4(sc->sc_memt, sc->sc_regh, 861 R128_DP_GUI_MASTER_CNTL, 862 R128_GMC_BRUSH_SOLID_COLOR | 863 R128_GMC_SRC_DATATYPE_MONO_FG_BG | 864 R128_ROP3_S | 865 R128_DP_SRC_SOURCE_HOST_DATA | 866 R128_GMC_DST_CLIPPING | 867 sc->sc_master_cntl); 868 869 bus_space_write_4(sc->sc_memt, sc->sc_regh, 870 R128_DP_CNTL, 871 R128_DST_Y_TOP_TO_BOTTOM | 872 R128_DST_X_LEFT_TO_RIGHT); 873 874 bus_space_write_4(sc->sc_memt, sc->sc_regh, 875 R128_DP_SRC_FRGD_CLR, fg); 876 bus_space_write_4(sc->sc_memt, sc->sc_regh, 877 R128_DP_SRC_BKGD_CLR, bg); 878 879 /* 880 * The Rage 128 doesn't have anything to skip pixels 881 * when colour expanding but all coordinates 882 * are signed so we just clip the leading bytes and 883 * trailing bits away 884 */ 885 bus_space_write_4(sc->sc_memt, sc->sc_regh, 886 R128_SC_RIGHT, x + wi - 1); 887 bus_space_write_4(sc->sc_memt, sc->sc_regh, 888 R128_SC_LEFT, x); 889 890 /* needed? */ 891 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_SRC_X_Y, 0); 892 893 offset = 32 - (font->stride << 3); 894 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DST_X_Y, 895 ((x - offset) << 16) | y); 896 bus_space_write_4(sc->sc_memt, sc->sc_regh, 897 R128_DST_WIDTH_HEIGHT, (32 << 16) | he); 898 899 r128fb_wait(sc, he); 900 switch (font->stride) { 901 case 1: { 902 uint8_t *data8 = data; 903 uint32_t reg; 904 for (i = 0; i < he; i++) { 905 reg = *data8; 906 bus_space_write_stream_4(sc->sc_memt, 907 sc->sc_regh, R128_HOST_DATA0, reg); 908 data8++; 909 } 910 break; 911 } 912 case 2: { 913 uint16_t *data16 = data; 914 uint32_t reg; 915 for (i = 0; i < he; i++) { 916 reg = *data16; 917 bus_space_write_stream_4(sc->sc_memt, 918 sc->sc_regh, R128_HOST_DATA0, reg); 919 data16++; 920 } 921 break; 922 } 923 } 924 } 925 926 static void 927 r128fb_putchar_aa(void *cookie, int row, int col, u_int c, long attr) 928 { 929 struct rasops_info *ri = cookie; 930 struct wsdisplay_font *font = PICK_FONT(ri, c); 931 struct vcons_screen *scr = ri->ri_hw; 932 struct r128fb_softc *sc = scr->scr_cookie; 933 uint32_t bg, latch = 0, bg8, fg8, pixel; 934 int i, x, y, wi, he, r, g, b, aval; 935 int r1, g1, b1, r0, g0, b0, fgo, bgo; 936 uint8_t *data8; 937 int rv, cnt = 0; 938 939 if (sc->sc_mode != WSDISPLAYIO_MODE_EMUL) 940 return; 941 942 if (!CHAR_IN_FONT(c, font)) 943 return; 944 945 wi = font->fontwidth; 946 he = font->fontheight; 947 948 bg = ri->ri_devcmap[(attr >> 16) & 0xf]; 949 x = ri->ri_xorigin + col * wi; 950 y = ri->ri_yorigin + row * he; 951 if (c == 0x20) { 952 r128fb_rectfill(sc, x, y, wi, he, bg); 953 return; 954 } 955 956 rv = glyphcache_try(&sc->sc_gc, c, x, y, attr); 957 if (rv == GC_OK) 958 return; 959 960 data8 = WSFONT_GLYPH(c, font); 961 962 r128fb_wait(sc, 5); 963 bus_space_write_4(sc->sc_memt, sc->sc_regh, 964 R128_DP_GUI_MASTER_CNTL, 965 R128_GMC_BRUSH_SOLID_COLOR | 966 R128_GMC_SRC_DATATYPE_COLOR | 967 R128_ROP3_S | 968 R128_DP_SRC_SOURCE_HOST_DATA | 969 sc->sc_master_cntl); 970 971 bus_space_write_4(sc->sc_memt, sc->sc_regh, 972 R128_DP_CNTL, 973 R128_DST_Y_TOP_TO_BOTTOM | 974 R128_DST_X_LEFT_TO_RIGHT); 975 976 /* needed? */ 977 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_SRC_X_Y, 0); 978 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DST_X_Y, 979 (x << 16) | y); 980 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DST_WIDTH_HEIGHT, 981 (wi << 16) | he); 982 983 /* 984 * we need the RGB colours here, so get offsets into rasops_cmap 985 */ 986 fgo = ((attr >> 24) & 0xf) * 3; 987 bgo = ((attr >> 16) & 0xf) * 3; 988 989 r0 = rasops_cmap[bgo]; 990 r1 = rasops_cmap[fgo]; 991 g0 = rasops_cmap[bgo + 1]; 992 g1 = rasops_cmap[fgo + 1]; 993 b0 = rasops_cmap[bgo + 2]; 994 b1 = rasops_cmap[fgo + 2]; 995 #define R3G3B2(r, g, b) ((r & 0xe0) | ((g >> 3) & 0x1c) | (b >> 6)) 996 bg8 = R3G3B2(r0, g0, b0); 997 fg8 = R3G3B2(r1, g1, b1); 998 999 r128fb_wait(sc, 16); 1000 1001 for (i = 0; i < ri->ri_fontscale; i++) { 1002 aval = *data8; 1003 if (aval == 0) { 1004 pixel = bg8; 1005 } else if (aval == 255) { 1006 pixel = fg8; 1007 } else { 1008 r = aval * r1 + (255 - aval) * r0; 1009 g = aval * g1 + (255 - aval) * g0; 1010 b = aval * b1 + (255 - aval) * b0; 1011 pixel = ((r & 0xe000) >> 8) | 1012 ((g & 0xe000) >> 11) | 1013 ((b & 0xc000) >> 14); 1014 } 1015 latch = (latch << 8) | pixel; 1016 /* write in 32bit chunks */ 1017 if ((i & 3) == 3) { 1018 bus_space_write_stream_4(sc->sc_memt, sc->sc_regh, 1019 R128_HOST_DATA0, latch); 1020 /* 1021 * not strictly necessary, old data should be shifted 1022 * out 1023 */ 1024 latch = 0; 1025 cnt++; 1026 if (cnt > 15) { 1027 r128fb_wait(sc, 16); 1028 cnt = 0; 1029 } 1030 } 1031 data8++; 1032 } 1033 /* if we have pixels left in latch write them out */ 1034 if ((i & 3) != 0) { 1035 latch = latch << ((4 - (i & 3)) << 3); 1036 bus_space_write_stream_4(sc->sc_memt, sc->sc_regh, 1037 R128_HOST_DATA0, latch); 1038 } 1039 if (rv == GC_ADD) { 1040 glyphcache_add(&sc->sc_gc, c, x, y); 1041 } 1042 } 1043 1044 static void 1045 r128fb_copycols(void *cookie, int row, int srccol, int dstcol, int ncols) 1046 { 1047 struct rasops_info *ri = cookie; 1048 struct vcons_screen *scr = ri->ri_hw; 1049 struct r128fb_softc *sc = scr->scr_cookie; 1050 int32_t xs, xd, y, width, height; 1051 1052 if ((sc->sc_locked == 0) && (sc->sc_mode == WSDISPLAYIO_MODE_EMUL)) { 1053 xs = ri->ri_xorigin + ri->ri_font->fontwidth * srccol; 1054 xd = ri->ri_xorigin + ri->ri_font->fontwidth * dstcol; 1055 y = ri->ri_yorigin + ri->ri_font->fontheight * row; 1056 width = ri->ri_font->fontwidth * ncols; 1057 height = ri->ri_font->fontheight; 1058 r128fb_bitblt(sc, xs, y, xd, y, width, height, R128_ROP3_S); 1059 } 1060 } 1061 1062 static void 1063 r128fb_erasecols(void *cookie, int row, int startcol, int ncols, long fillattr) 1064 { 1065 struct rasops_info *ri = cookie; 1066 struct vcons_screen *scr = ri->ri_hw; 1067 struct r128fb_softc *sc = scr->scr_cookie; 1068 int32_t x, y, width, height, fg, bg, ul; 1069 1070 if ((sc->sc_locked == 0) && (sc->sc_mode == WSDISPLAYIO_MODE_EMUL)) { 1071 x = ri->ri_xorigin + ri->ri_font->fontwidth * startcol; 1072 y = ri->ri_yorigin + ri->ri_font->fontheight * row; 1073 width = ri->ri_font->fontwidth * ncols; 1074 height = ri->ri_font->fontheight; 1075 rasops_unpack_attr(fillattr, &fg, &bg, &ul); 1076 1077 r128fb_rectfill(sc, x, y, width, height, ri->ri_devcmap[bg]); 1078 } 1079 } 1080 1081 static void 1082 r128fb_copyrows(void *cookie, int srcrow, int dstrow, int nrows) 1083 { 1084 struct rasops_info *ri = cookie; 1085 struct vcons_screen *scr = ri->ri_hw; 1086 struct r128fb_softc *sc = scr->scr_cookie; 1087 int32_t x, ys, yd, width, height; 1088 1089 if ((sc->sc_locked == 0) && (sc->sc_mode == WSDISPLAYIO_MODE_EMUL)) { 1090 x = ri->ri_xorigin; 1091 ys = ri->ri_yorigin + ri->ri_font->fontheight * srcrow; 1092 yd = ri->ri_yorigin + ri->ri_font->fontheight * dstrow; 1093 width = ri->ri_emuwidth; 1094 height = ri->ri_font->fontheight * nrows; 1095 r128fb_bitblt(sc, x, ys, x, yd, width, height, R128_ROP3_S); 1096 } 1097 } 1098 1099 static void 1100 r128fb_eraserows(void *cookie, int row, int nrows, long fillattr) 1101 { 1102 struct rasops_info *ri = cookie; 1103 struct vcons_screen *scr = ri->ri_hw; 1104 struct r128fb_softc *sc = scr->scr_cookie; 1105 int32_t x, y, width, height, fg, bg, ul; 1106 1107 if ((sc->sc_locked == 0) && (sc->sc_mode == WSDISPLAYIO_MODE_EMUL)) { 1108 x = ri->ri_xorigin; 1109 y = ri->ri_yorigin + ri->ri_font->fontheight * row; 1110 width = ri->ri_emuwidth; 1111 height = ri->ri_font->fontheight * nrows; 1112 rasops_unpack_attr(fillattr, &fg, &bg, &ul); 1113 1114 r128fb_rectfill(sc, x, y, width, height, ri->ri_devcmap[bg]); 1115 } 1116 } 1117 1118 static void 1119 r128fb_set_backlight(struct r128fb_softc *sc, int level) 1120 { 1121 uint32_t reg; 1122 1123 /* 1124 * should we do nothing when backlight is off, should we just store the 1125 * level and use it when turning back on or should we just flip sc_bl_on 1126 * and turn the backlight on? 1127 * For now turn it on so a crashed screensaver can't get the user stuck 1128 * with a dark screen as long as hotkeys work 1129 */ 1130 if (level > 255) level = 255; 1131 if (level < 0) level = 0; 1132 if (level == sc->sc_bl_level) 1133 return; 1134 sc->sc_bl_level = level; 1135 if (sc->sc_bl_on == 0) 1136 sc->sc_bl_on = 1; 1137 level = 255 - level; 1138 reg = bus_space_read_4(sc->sc_memt, sc->sc_regh, R128_LVDS_GEN_CNTL); 1139 reg &= ~R128_LEVEL_MASK; 1140 reg |= (level << R128_LEVEL_SHIFT); 1141 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_LVDS_GEN_CNTL, reg); 1142 DPRINTF("backlight level: %d reg %08x\n", level, reg); 1143 } 1144 1145 static void 1146 r128fb_switch_backlight(struct r128fb_softc *sc, int on) 1147 { 1148 uint32_t reg; 1149 int level; 1150 1151 if (on == sc->sc_bl_on) 1152 return; 1153 sc->sc_bl_on = on; 1154 reg = bus_space_read_4(sc->sc_memt, sc->sc_regh, R128_LVDS_GEN_CNTL); 1155 reg &= ~R128_LEVEL_MASK; 1156 level = on ? 255 - sc->sc_bl_level : 255; 1157 reg |= level << R128_LEVEL_SHIFT; 1158 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_LVDS_GEN_CNTL, reg); 1159 DPRINTF("backlight state: %d reg %08x\n", on, reg); 1160 } 1161 1162 1163 static void 1164 r128fb_brightness_up(device_t dev) 1165 { 1166 struct r128fb_softc *sc = device_private(dev); 1167 1168 r128fb_set_backlight(sc, sc->sc_bl_level + 8); 1169 } 1170 1171 static void 1172 r128fb_brightness_down(device_t dev) 1173 { 1174 struct r128fb_softc *sc = device_private(dev); 1175 1176 r128fb_set_backlight(sc, sc->sc_bl_level - 8); 1177 } 1178
Indexes created Sat Sep 27 22:09:54 GMT 2025