1 /* $NetBSD: r128fb.c,v 1.37 2013/07/30 19:21:50 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 1.37 2013/07/30 19:21:50 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 case WSDISPLAYIO_GET_EDID: { 457 struct wsdisplayio_edid_info *d = data; 458 return wsdisplayio_get_edid(sc->sc_dev, d); 459 } 460 } 461 return EPASSTHROUGH; 462 } 463 464 static paddr_t 465 r128fb_mmap(void *v, void *vs, off_t offset, int prot) 466 { 467 struct vcons_data *vd = v; 468 struct r128fb_softc *sc = vd->cookie; 469 paddr_t pa; 470 471 /* 'regular' framebuffer mmap()ing */ 472 if (offset < sc->sc_fbsize) { 473 pa = bus_space_mmap(sc->sc_memt, sc->sc_fb + offset, 0, prot, 474 BUS_SPACE_MAP_LINEAR); 475 return pa; 476 } 477 478 /* 479 * restrict all other mappings to processes with superuser privileges 480 * or the kernel itself 481 */ 482 if (kauth_authorize_machdep(kauth_cred_get(), KAUTH_MACHDEP_UNMANAGEDMEM, 483 NULL, NULL, NULL, NULL) != 0) { 484 aprint_normal("%s: mmap() rejected.\n", 485 device_xname(sc->sc_dev)); 486 return -1; 487 } 488 489 if ((offset >= sc->sc_fb) && (offset < (sc->sc_fb + sc->sc_fbsize))) { 490 pa = bus_space_mmap(sc->sc_memt, offset, 0, prot, 491 BUS_SPACE_MAP_LINEAR); 492 return pa; 493 } 494 495 if ((offset >= sc->sc_reg) && 496 (offset < (sc->sc_reg + sc->sc_regsize))) { 497 pa = bus_space_mmap(sc->sc_memt, offset, 0, prot, 498 BUS_SPACE_MAP_LINEAR); 499 return pa; 500 } 501 502 #ifdef PCI_MAGIC_IO_RANGE 503 /* allow mapping of IO space */ 504 if ((offset >= PCI_MAGIC_IO_RANGE) && 505 (offset < PCI_MAGIC_IO_RANGE + 0x10000)) { 506 pa = bus_space_mmap(sc->sc_iot, offset - PCI_MAGIC_IO_RANGE, 507 0, prot, BUS_SPACE_MAP_LINEAR); 508 return pa; 509 } 510 #endif 511 512 #ifdef OFB_ALLOW_OTHERS 513 if (offset >= 0x80000000) { 514 pa = bus_space_mmap(sc->sc_memt, offset, 0, prot, 515 BUS_SPACE_MAP_LINEAR); 516 return pa; 517 } 518 #endif 519 return -1; 520 } 521 522 static void 523 r128fb_init_screen(void *cookie, struct vcons_screen *scr, 524 int existing, long *defattr) 525 { 526 struct r128fb_softc *sc = cookie; 527 struct rasops_info *ri = &scr->scr_ri; 528 529 ri->ri_depth = sc->sc_depth; 530 ri->ri_width = sc->sc_width; 531 ri->ri_height = sc->sc_height; 532 ri->ri_stride = sc->sc_stride; 533 ri->ri_flg = RI_CENTER; 534 if (sc->sc_depth == 8) 535 ri->ri_flg |= RI_8BIT_IS_RGB | RI_ENABLE_ALPHA; 536 537 rasops_init(ri, 0, 0); 538 ri->ri_caps = WSSCREEN_WSCOLORS; 539 #ifdef VCONS_DRAW_INTR 540 scr->scr_flags |= VCONS_DONT_READ; 541 #endif 542 543 rasops_reconfig(ri, sc->sc_height / ri->ri_font->fontheight, 544 sc->sc_width / ri->ri_font->fontwidth); 545 546 ri->ri_hw = scr; 547 ri->ri_ops.copyrows = r128fb_copyrows; 548 ri->ri_ops.copycols = r128fb_copycols; 549 ri->ri_ops.eraserows = r128fb_eraserows; 550 ri->ri_ops.erasecols = r128fb_erasecols; 551 ri->ri_ops.cursor = r128fb_cursor; 552 if (FONT_IS_ALPHA(ri->ri_font)) { 553 ri->ri_ops.putchar = r128fb_putchar_aa; 554 } else 555 ri->ri_ops.putchar = r128fb_putchar; 556 } 557 558 static int 559 r128fb_putcmap(struct r128fb_softc *sc, struct wsdisplay_cmap *cm) 560 { 561 u_char *r, *g, *b; 562 u_int index = cm->index; 563 u_int count = cm->count; 564 int i, error; 565 u_char rbuf[256], gbuf[256], bbuf[256]; 566 567 #ifdef R128FB_DEBUG 568 aprint_debug("putcmap: %d %d\n",index, count); 569 #endif 570 if (cm->index >= 256 || cm->count > 256 || 571 (cm->index + cm->count) > 256) 572 return EINVAL; 573 error = copyin(cm->red, &rbuf[index], count); 574 if (error) 575 return error; 576 error = copyin(cm->green, &gbuf[index], count); 577 if (error) 578 return error; 579 error = copyin(cm->blue, &bbuf[index], count); 580 if (error) 581 return error; 582 583 memcpy(&sc->sc_cmap_red[index], &rbuf[index], count); 584 memcpy(&sc->sc_cmap_green[index], &gbuf[index], count); 585 memcpy(&sc->sc_cmap_blue[index], &bbuf[index], count); 586 587 r = &sc->sc_cmap_red[index]; 588 g = &sc->sc_cmap_green[index]; 589 b = &sc->sc_cmap_blue[index]; 590 591 for (i = 0; i < count; i++) { 592 r128fb_putpalreg(sc, index, *r, *g, *b); 593 index++; 594 r++, g++, b++; 595 } 596 return 0; 597 } 598 599 static int 600 r128fb_getcmap(struct r128fb_softc *sc, struct wsdisplay_cmap *cm) 601 { 602 u_int index = cm->index; 603 u_int count = cm->count; 604 int error; 605 606 if (index >= 255 || count > 256 || index + count > 256) 607 return EINVAL; 608 609 error = copyout(&sc->sc_cmap_red[index], cm->red, count); 610 if (error) 611 return error; 612 error = copyout(&sc->sc_cmap_green[index], cm->green, count); 613 if (error) 614 return error; 615 error = copyout(&sc->sc_cmap_blue[index], cm->blue, count); 616 if (error) 617 return error; 618 619 return 0; 620 } 621 622 static void 623 r128fb_restore_palette(struct r128fb_softc *sc) 624 { 625 int i; 626 627 for (i = 0; i < (1 << sc->sc_depth); i++) { 628 r128fb_putpalreg(sc, i, sc->sc_cmap_red[i], 629 sc->sc_cmap_green[i], sc->sc_cmap_blue[i]); 630 } 631 } 632 633 static int 634 r128fb_putpalreg(struct r128fb_softc *sc, uint8_t idx, uint8_t r, uint8_t g, 635 uint8_t b) 636 { 637 uint32_t reg; 638 639 /* whack the DAC */ 640 reg = (r << 16) | (g << 8) | b; 641 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_PALETTE_INDEX, idx); 642 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_PALETTE_DATA, reg); 643 return 0; 644 } 645 646 static void 647 r128fb_init(struct r128fb_softc *sc) 648 { 649 uint32_t datatype, d, reg; 650 651 r128fb_flush_engine(sc); 652 653 r128fb_wait(sc, 9); 654 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_CRTC_OFFSET, 0); 655 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DEFAULT_OFFSET, 0); 656 /* pitch is in units of 8 pixels */ 657 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DEFAULT_PITCH, 658 sc->sc_width >> 3); 659 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_AUX_SC_CNTL, 0); 660 bus_space_write_4(sc->sc_memt, sc->sc_regh, 661 R128_DEFAULT_SC_BOTTOM_RIGHT, 662 R128_DEFAULT_SC_RIGHT_MAX | R128_DEFAULT_SC_BOTTOM_MAX); 663 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_SC_TOP_LEFT, 0); 664 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_SC_BOTTOM_RIGHT, 665 R128_DEFAULT_SC_RIGHT_MAX | R128_DEFAULT_SC_BOTTOM_MAX); 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); 669 670 #if 0 671 #if BYTE_ORDER == BIG_ENDIAN 672 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DP_DATATYPE, 673 R128_HOST_BIG_ENDIAN_EN); 674 #else 675 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DP_DATATYPE, 0); 676 #endif 677 #endif 678 r128fb_wait(sc, 7); 679 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_SRC_PITCH, 680 sc->sc_width >> 3); 681 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DST_PITCH, 682 sc->sc_width >> 3); 683 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_SRC_OFFSET, 0); 684 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DST_OFFSET, 0); 685 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DP_WRITE_MASK, 686 0xffffffff); 687 688 switch (sc->sc_depth) { 689 case 8: 690 datatype = R128_GMC_DST_8BPP_CI; 691 d = R128_CRTC_COLOR_8BIT; 692 break; 693 case 15: 694 datatype = R128_GMC_DST_15BPP; 695 d = R128_CRTC_COLOR_15BIT; 696 break; 697 case 16: 698 datatype = R128_GMC_DST_16BPP; 699 d = R128_CRTC_COLOR_16BIT; 700 break; 701 case 24: 702 datatype = R128_GMC_DST_24BPP; 703 d = R128_CRTC_COLOR_24BIT; 704 break; 705 case 32: 706 datatype = R128_GMC_DST_32BPP; 707 d = R128_CRTC_COLOR_32BIT; 708 break; 709 default: 710 aprint_error("%s: unsupported depth %d\n", 711 device_xname(sc->sc_dev), sc->sc_depth); 712 return; 713 } 714 sc->sc_master_cntl = R128_GMC_CLR_CMP_CNTL_DIS | 715 R128_GMC_AUX_CLIP_DIS | datatype; 716 reg = bus_space_read_4(sc->sc_memt, sc->sc_regh, R128_CRTC_GEN_CNTL); 717 DPRINTF("depth: %d\n", reg & R128_CRTC_PIX_WIDTH); 718 reg &= ~R128_CRTC_PIX_WIDTH; 719 reg |= d; 720 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_CRTC_GEN_CNTL, reg); 721 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_CRTC_PITCH, sc->sc_width >> 3); 722 r128fb_flush_engine(sc); 723 } 724 725 static void 726 r128fb_rectfill(struct r128fb_softc *sc, int x, int y, int wi, int he, 727 uint32_t colour) 728 { 729 730 r128fb_wait(sc, 5); 731 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DP_GUI_MASTER_CNTL, 732 R128_GMC_BRUSH_SOLID_COLOR | 733 R128_GMC_SRC_DATATYPE_COLOR | 734 R128_ROP3_P | 735 sc->sc_master_cntl); 736 737 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DP_BRUSH_FRGD_CLR, 738 colour); 739 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DP_CNTL, 740 R128_DST_X_LEFT_TO_RIGHT | R128_DST_Y_TOP_TO_BOTTOM); 741 /* now feed it coordinates */ 742 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DST_X_Y, 743 (x << 16) | y); 744 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DST_WIDTH_HEIGHT, 745 (wi << 16) | he); 746 } 747 748 static void 749 r128fb_bitblt(void *cookie, int xs, int ys, int xd, int yd, 750 int wi, int he, int rop) 751 { 752 struct r128fb_softc *sc = cookie; 753 uint32_t dp_cntl = 0; 754 755 r128fb_wait(sc, 5); 756 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DP_GUI_MASTER_CNTL, 757 R128_GMC_BRUSH_SOLID_COLOR | 758 R128_GMC_SRC_DATATYPE_COLOR | 759 rop | 760 R128_DP_SRC_SOURCE_MEMORY | 761 sc->sc_master_cntl); 762 763 if (yd <= ys) { 764 dp_cntl = R128_DST_Y_TOP_TO_BOTTOM; 765 } else { 766 ys += he - 1; 767 yd += he - 1; 768 } 769 if (xd <= xs) { 770 dp_cntl |= R128_DST_X_LEFT_TO_RIGHT; 771 } else { 772 xs += wi - 1; 773 xd += wi - 1; 774 } 775 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DP_CNTL, dp_cntl); 776 777 /* now feed it coordinates */ 778 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_SRC_X_Y, 779 (xs << 16) | ys); 780 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DST_X_Y, 781 (xd << 16) | yd); 782 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DST_WIDTH_HEIGHT, 783 (wi << 16) | he); 784 } 785 786 static void 787 r128fb_cursor(void *cookie, int on, int row, int col) 788 { 789 struct rasops_info *ri = cookie; 790 struct vcons_screen *scr = ri->ri_hw; 791 struct r128fb_softc *sc = scr->scr_cookie; 792 int x, y, wi, he; 793 794 wi = ri->ri_font->fontwidth; 795 he = ri->ri_font->fontheight; 796 797 if (sc->sc_mode == WSDISPLAYIO_MODE_EMUL) { 798 x = ri->ri_ccol * wi + ri->ri_xorigin; 799 y = ri->ri_crow * he + ri->ri_yorigin; 800 if (ri->ri_flg & RI_CURSOR) { 801 r128fb_bitblt(sc, x, y, x, y, wi, he, R128_ROP3_Dn); 802 ri->ri_flg &= ~RI_CURSOR; 803 } 804 ri->ri_crow = row; 805 ri->ri_ccol = col; 806 if (on) { 807 x = ri->ri_ccol * wi + ri->ri_xorigin; 808 y = ri->ri_crow * he + ri->ri_yorigin; 809 r128fb_bitblt(sc, x, y, x, y, wi, he, R128_ROP3_Dn); 810 ri->ri_flg |= RI_CURSOR; 811 } 812 } else { 813 scr->scr_ri.ri_crow = row; 814 scr->scr_ri.ri_ccol = col; 815 scr->scr_ri.ri_flg &= ~RI_CURSOR; 816 } 817 818 } 819 820 static void 821 r128fb_putchar(void *cookie, int row, int col, u_int c, long attr) 822 { 823 struct rasops_info *ri = cookie; 824 struct wsdisplay_font *font = PICK_FONT(ri, c); 825 struct vcons_screen *scr = ri->ri_hw; 826 struct r128fb_softc *sc = scr->scr_cookie; 827 void *data; 828 uint32_t fg, bg; 829 int i, x, y, wi, he, offset; 830 831 if (sc->sc_mode != WSDISPLAYIO_MODE_EMUL) 832 return; 833 834 if (!CHAR_IN_FONT(c, font)) 835 return; 836 837 wi = font->fontwidth; 838 he = font->fontheight; 839 840 bg = ri->ri_devcmap[(attr >> 16) & 0xf]; 841 fg = ri->ri_devcmap[(attr >> 24) & 0xf]; 842 x = ri->ri_xorigin + col * wi; 843 y = ri->ri_yorigin + row * he; 844 845 if (c == 0x20) { 846 r128fb_rectfill(sc, x, y, wi, he, bg); 847 return; 848 } 849 850 data = WSFONT_GLYPH(c, font); 851 852 r128fb_wait(sc, 8); 853 854 bus_space_write_4(sc->sc_memt, sc->sc_regh, 855 R128_DP_GUI_MASTER_CNTL, 856 R128_GMC_BRUSH_SOLID_COLOR | 857 R128_GMC_SRC_DATATYPE_MONO_FG_BG | 858 R128_ROP3_S | 859 R128_DP_SRC_SOURCE_HOST_DATA | 860 R128_GMC_DST_CLIPPING | 861 sc->sc_master_cntl); 862 863 bus_space_write_4(sc->sc_memt, sc->sc_regh, 864 R128_DP_CNTL, 865 R128_DST_Y_TOP_TO_BOTTOM | 866 R128_DST_X_LEFT_TO_RIGHT); 867 868 bus_space_write_4(sc->sc_memt, sc->sc_regh, 869 R128_DP_SRC_FRGD_CLR, fg); 870 bus_space_write_4(sc->sc_memt, sc->sc_regh, 871 R128_DP_SRC_BKGD_CLR, bg); 872 873 /* 874 * The Rage 128 doesn't have anything to skip pixels 875 * when colour expanding but all coordinates 876 * are signed so we just clip the leading bytes and 877 * trailing bits away 878 */ 879 bus_space_write_4(sc->sc_memt, sc->sc_regh, 880 R128_SC_RIGHT, x + wi - 1); 881 bus_space_write_4(sc->sc_memt, sc->sc_regh, 882 R128_SC_LEFT, x); 883 884 /* needed? */ 885 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_SRC_X_Y, 0); 886 887 offset = 32 - (font->stride << 3); 888 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DST_X_Y, 889 ((x - offset) << 16) | y); 890 bus_space_write_4(sc->sc_memt, sc->sc_regh, 891 R128_DST_WIDTH_HEIGHT, (32 << 16) | he); 892 893 r128fb_wait(sc, he); 894 switch (font->stride) { 895 case 1: { 896 uint8_t *data8 = data; 897 uint32_t reg; 898 for (i = 0; i < he; i++) { 899 reg = *data8; 900 bus_space_write_stream_4(sc->sc_memt, 901 sc->sc_regh, R128_HOST_DATA0, reg); 902 data8++; 903 } 904 break; 905 } 906 case 2: { 907 uint16_t *data16 = data; 908 uint32_t reg; 909 for (i = 0; i < he; i++) { 910 reg = *data16; 911 bus_space_write_stream_4(sc->sc_memt, 912 sc->sc_regh, R128_HOST_DATA0, reg); 913 data16++; 914 } 915 break; 916 } 917 } 918 } 919 920 static void 921 r128fb_putchar_aa(void *cookie, int row, int col, u_int c, long attr) 922 { 923 struct rasops_info *ri = cookie; 924 struct wsdisplay_font *font = PICK_FONT(ri, c); 925 struct vcons_screen *scr = ri->ri_hw; 926 struct r128fb_softc *sc = scr->scr_cookie; 927 uint32_t bg, latch = 0, bg8, fg8, pixel; 928 int i, x, y, wi, he, r, g, b, aval; 929 int r1, g1, b1, r0, g0, b0, fgo, bgo; 930 uint8_t *data8; 931 int rv, cnt = 0; 932 933 if (sc->sc_mode != WSDISPLAYIO_MODE_EMUL) 934 return; 935 936 if (!CHAR_IN_FONT(c, font)) 937 return; 938 939 wi = font->fontwidth; 940 he = font->fontheight; 941 942 bg = ri->ri_devcmap[(attr >> 16) & 0xf]; 943 x = ri->ri_xorigin + col * wi; 944 y = ri->ri_yorigin + row * he; 945 if (c == 0x20) { 946 r128fb_rectfill(sc, x, y, wi, he, bg); 947 return; 948 } 949 950 rv = glyphcache_try(&sc->sc_gc, c, x, y, attr); 951 if (rv == GC_OK) 952 return; 953 954 data8 = WSFONT_GLYPH(c, font); 955 956 r128fb_wait(sc, 5); 957 bus_space_write_4(sc->sc_memt, sc->sc_regh, 958 R128_DP_GUI_MASTER_CNTL, 959 R128_GMC_BRUSH_SOLID_COLOR | 960 R128_GMC_SRC_DATATYPE_COLOR | 961 R128_ROP3_S | 962 R128_DP_SRC_SOURCE_HOST_DATA | 963 sc->sc_master_cntl); 964 965 bus_space_write_4(sc->sc_memt, sc->sc_regh, 966 R128_DP_CNTL, 967 R128_DST_Y_TOP_TO_BOTTOM | 968 R128_DST_X_LEFT_TO_RIGHT); 969 970 /* needed? */ 971 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_SRC_X_Y, 0); 972 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DST_X_Y, 973 (x << 16) | y); 974 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DST_WIDTH_HEIGHT, 975 (wi << 16) | he); 976 977 /* 978 * we need the RGB colours here, so get offsets into rasops_cmap 979 */ 980 fgo = ((attr >> 24) & 0xf) * 3; 981 bgo = ((attr >> 16) & 0xf) * 3; 982 983 r0 = rasops_cmap[bgo]; 984 r1 = rasops_cmap[fgo]; 985 g0 = rasops_cmap[bgo + 1]; 986 g1 = rasops_cmap[fgo + 1]; 987 b0 = rasops_cmap[bgo + 2]; 988 b1 = rasops_cmap[fgo + 2]; 989 #define R3G3B2(r, g, b) ((r & 0xe0) | ((g >> 3) & 0x1c) | (b >> 6)) 990 bg8 = R3G3B2(r0, g0, b0); 991 fg8 = R3G3B2(r1, g1, b1); 992 993 r128fb_wait(sc, 16); 994 995 for (i = 0; i < ri->ri_fontscale; i++) { 996 aval = *data8; 997 if (aval == 0) { 998 pixel = bg8; 999 } else if (aval == 255) { 1000 pixel = fg8; 1001 } else { 1002 r = aval * r1 + (255 - aval) * r0; 1003 g = aval * g1 + (255 - aval) * g0; 1004 b = aval * b1 + (255 - aval) * b0; 1005 pixel = ((r & 0xe000) >> 8) | 1006 ((g & 0xe000) >> 11) | 1007 ((b & 0xc000) >> 14); 1008 } 1009 latch = (latch << 8) | pixel; 1010 /* write in 32bit chunks */ 1011 if ((i & 3) == 3) { 1012 bus_space_write_stream_4(sc->sc_memt, sc->sc_regh, 1013 R128_HOST_DATA0, latch); 1014 /* 1015 * not strictly necessary, old data should be shifted 1016 * out 1017 */ 1018 latch = 0; 1019 cnt++; 1020 if (cnt > 15) { 1021 r128fb_wait(sc, 16); 1022 cnt = 0; 1023 } 1024 } 1025 data8++; 1026 } 1027 /* if we have pixels left in latch write them out */ 1028 if ((i & 3) != 0) { 1029 latch = latch << ((4 - (i & 3)) << 3); 1030 bus_space_write_stream_4(sc->sc_memt, sc->sc_regh, 1031 R128_HOST_DATA0, latch); 1032 } 1033 if (rv == GC_ADD) { 1034 glyphcache_add(&sc->sc_gc, c, x, y); 1035 } 1036 } 1037 1038 static void 1039 r128fb_copycols(void *cookie, int row, int srccol, int dstcol, int ncols) 1040 { 1041 struct rasops_info *ri = cookie; 1042 struct vcons_screen *scr = ri->ri_hw; 1043 struct r128fb_softc *sc = scr->scr_cookie; 1044 int32_t xs, xd, y, width, height; 1045 1046 if ((sc->sc_locked == 0) && (sc->sc_mode == WSDISPLAYIO_MODE_EMUL)) { 1047 xs = ri->ri_xorigin + ri->ri_font->fontwidth * srccol; 1048 xd = ri->ri_xorigin + ri->ri_font->fontwidth * dstcol; 1049 y = ri->ri_yorigin + ri->ri_font->fontheight * row; 1050 width = ri->ri_font->fontwidth * ncols; 1051 height = ri->ri_font->fontheight; 1052 r128fb_bitblt(sc, xs, y, xd, y, width, height, R128_ROP3_S); 1053 } 1054 } 1055 1056 static void 1057 r128fb_erasecols(void *cookie, int row, int startcol, int ncols, long fillattr) 1058 { 1059 struct rasops_info *ri = cookie; 1060 struct vcons_screen *scr = ri->ri_hw; 1061 struct r128fb_softc *sc = scr->scr_cookie; 1062 int32_t x, y, width, height, fg, bg, ul; 1063 1064 if ((sc->sc_locked == 0) && (sc->sc_mode == WSDISPLAYIO_MODE_EMUL)) { 1065 x = ri->ri_xorigin + ri->ri_font->fontwidth * startcol; 1066 y = ri->ri_yorigin + ri->ri_font->fontheight * row; 1067 width = ri->ri_font->fontwidth * ncols; 1068 height = ri->ri_font->fontheight; 1069 rasops_unpack_attr(fillattr, &fg, &bg, &ul); 1070 1071 r128fb_rectfill(sc, x, y, width, height, ri->ri_devcmap[bg]); 1072 } 1073 } 1074 1075 static void 1076 r128fb_copyrows(void *cookie, int srcrow, int dstrow, int nrows) 1077 { 1078 struct rasops_info *ri = cookie; 1079 struct vcons_screen *scr = ri->ri_hw; 1080 struct r128fb_softc *sc = scr->scr_cookie; 1081 int32_t x, ys, yd, width, height; 1082 1083 if ((sc->sc_locked == 0) && (sc->sc_mode == WSDISPLAYIO_MODE_EMUL)) { 1084 x = ri->ri_xorigin; 1085 ys = ri->ri_yorigin + ri->ri_font->fontheight * srcrow; 1086 yd = ri->ri_yorigin + ri->ri_font->fontheight * dstrow; 1087 width = ri->ri_emuwidth; 1088 height = ri->ri_font->fontheight * nrows; 1089 r128fb_bitblt(sc, x, ys, x, yd, width, height, R128_ROP3_S); 1090 } 1091 } 1092 1093 static void 1094 r128fb_eraserows(void *cookie, int row, int nrows, long fillattr) 1095 { 1096 struct rasops_info *ri = cookie; 1097 struct vcons_screen *scr = ri->ri_hw; 1098 struct r128fb_softc *sc = scr->scr_cookie; 1099 int32_t x, y, width, height, fg, bg, ul; 1100 1101 if ((sc->sc_locked == 0) && (sc->sc_mode == WSDISPLAYIO_MODE_EMUL)) { 1102 x = ri->ri_xorigin; 1103 y = ri->ri_yorigin + ri->ri_font->fontheight * row; 1104 width = ri->ri_emuwidth; 1105 height = ri->ri_font->fontheight * nrows; 1106 rasops_unpack_attr(fillattr, &fg, &bg, &ul); 1107 1108 r128fb_rectfill(sc, x, y, width, height, ri->ri_devcmap[bg]); 1109 } 1110 } 1111 1112 static void 1113 r128fb_set_backlight(struct r128fb_softc *sc, int level) 1114 { 1115 uint32_t reg; 1116 1117 /* 1118 * should we do nothing when backlight is off, should we just store the 1119 * level and use it when turning back on or should we just flip sc_bl_on 1120 * and turn the backlight on? 1121 * For now turn it on so a crashed screensaver can't get the user stuck 1122 * with a dark screen as long as hotkeys work 1123 */ 1124 if (level > 255) level = 255; 1125 if (level < 0) level = 0; 1126 if (level == sc->sc_bl_level) 1127 return; 1128 sc->sc_bl_level = level; 1129 if (sc->sc_bl_on == 0) 1130 sc->sc_bl_on = 1; 1131 level = 255 - level; 1132 reg = bus_space_read_4(sc->sc_memt, sc->sc_regh, R128_LVDS_GEN_CNTL); 1133 reg &= ~R128_LEVEL_MASK; 1134 reg |= (level << R128_LEVEL_SHIFT); 1135 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_LVDS_GEN_CNTL, reg); 1136 DPRINTF("backlight level: %d reg %08x\n", level, reg); 1137 } 1138 1139 static void 1140 r128fb_switch_backlight(struct r128fb_softc *sc, int on) 1141 { 1142 uint32_t reg; 1143 int level; 1144 1145 if (on == sc->sc_bl_on) 1146 return; 1147 sc->sc_bl_on = on; 1148 reg = bus_space_read_4(sc->sc_memt, sc->sc_regh, R128_LVDS_GEN_CNTL); 1149 reg &= ~R128_LEVEL_MASK; 1150 level = on ? 255 - sc->sc_bl_level : 255; 1151 reg |= level << R128_LEVEL_SHIFT; 1152 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_LVDS_GEN_CNTL, reg); 1153 DPRINTF("backlight state: %d reg %08x\n", on, reg); 1154 } 1155 1156 1157 static void 1158 r128fb_brightness_up(device_t dev) 1159 { 1160 struct r128fb_softc *sc = device_private(dev); 1161 1162 r128fb_set_backlight(sc, sc->sc_bl_level + 8); 1163 } 1164 1165 static void 1166 r128fb_brightness_down(device_t dev) 1167 { 1168 struct r128fb_softc *sc = device_private(dev); 1169 1170 r128fb_set_backlight(sc, sc->sc_bl_level - 8); 1171 } 1172