1 /* $NetBSD: r128fb.c,v 1.45 2022/09/25 17:52:25 thorpej 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 1.45 2022/09/25 17:52:25 thorpej 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/lwp.h> 41 #include <sys/kauth.h> 42 43 #include <dev/pci/pcivar.h> 44 #include <dev/pci/pcireg.h> 45 #include <dev/pci/pcidevs.h> 46 #include <dev/pci/pciio.h> 47 #include <dev/pci/r128fbreg.h> 48 49 #include <dev/wscons/wsdisplayvar.h> 50 #include <dev/wscons/wsconsio.h> 51 #include <dev/wsfont/wsfont.h> 52 #include <dev/rasops/rasops.h> 53 #include <dev/wscons/wsdisplay_vconsvar.h> 54 #include <dev/pci/wsdisplay_pci.h> 55 #include <dev/wscons/wsdisplay_glyphcachevar.h> 56 57 #include "opt_r128fb.h" 58 #include "opt_vcons.h" 59 60 #ifdef R128FB_DEBUG 61 #define DPRINTF printf 62 #else 63 #define DPRINTF while(0) printf 64 #endif 65 66 struct r128fb_softc { 67 device_t sc_dev; 68 69 pci_chipset_tag_t sc_pc; 70 pcitag_t sc_pcitag; 71 72 bus_space_tag_t sc_memt; 73 bus_space_tag_t sc_iot; 74 75 bus_space_handle_t sc_regh; 76 bus_addr_t sc_fb, sc_reg; 77 bus_size_t sc_fbsize, sc_regsize; 78 79 int sc_width, sc_height, sc_depth, sc_stride; 80 int sc_locked, sc_have_backlight, sc_bl_level, sc_bl_on; 81 struct vcons_screen sc_console_screen; 82 struct wsscreen_descr sc_defaultscreen_descr; 83 const struct wsscreen_descr *sc_screens[1]; 84 struct wsscreen_list sc_screenlist; 85 struct vcons_data vd; 86 int sc_mode; 87 u_char sc_cmap_red[256]; 88 u_char sc_cmap_green[256]; 89 u_char sc_cmap_blue[256]; 90 /* engine stuff */ 91 uint32_t sc_master_cntl; 92 glyphcache sc_gc; 93 }; 94 95 static int r128fb_match(device_t, cfdata_t, void *); 96 static void r128fb_attach(device_t, device_t, void *); 97 98 CFATTACH_DECL_NEW(r128fb, sizeof(struct r128fb_softc), 99 r128fb_match, r128fb_attach, NULL, NULL); 100 101 static int r128fb_ioctl(void *, void *, u_long, void *, int, 102 struct lwp *); 103 static paddr_t r128fb_mmap(void *, void *, off_t, int); 104 static void r128fb_init_screen(void *, struct vcons_screen *, int, long *); 105 106 static int r128fb_putcmap(struct r128fb_softc *, struct wsdisplay_cmap *); 107 static int r128fb_getcmap(struct r128fb_softc *, struct wsdisplay_cmap *); 108 static void r128fb_restore_palette(struct r128fb_softc *); 109 static int r128fb_putpalreg(struct r128fb_softc *, uint8_t, uint8_t, 110 uint8_t, uint8_t); 111 112 static void r128fb_init(struct r128fb_softc *); 113 static void r128fb_flush_engine(struct r128fb_softc *); 114 static void r128fb_rectfill(struct r128fb_softc *, int, int, int, int, 115 uint32_t); 116 static void r128fb_bitblt(void *, int, int, int, int, int, 117 int, int); 118 119 static void r128fb_cursor(void *, int, int, int); 120 static void r128fb_putchar(void *, int, int, u_int, long); 121 static void r128fb_putchar_aa(void *, int, int, u_int, long); 122 static void r128fb_copycols(void *, int, int, int, int); 123 static void r128fb_erasecols(void *, int, int, int, long); 124 static void r128fb_copyrows(void *, int, int, int); 125 static void r128fb_eraserows(void *, int, int, long); 126 127 static void r128fb_brightness_up(device_t); 128 static void r128fb_brightness_down(device_t); 129 /* set backlight level */ 130 static void r128fb_set_backlight(struct r128fb_softc *, int); 131 /* turn backlight on and off without messing with the level */ 132 static void r128fb_switch_backlight(struct r128fb_softc *, int); 133 134 struct wsdisplay_accessops r128fb_accessops = { 135 r128fb_ioctl, 136 r128fb_mmap, 137 NULL, /* alloc_screen */ 138 NULL, /* free_screen */ 139 NULL, /* show_screen */ 140 NULL, /* load_font */ 141 NULL, /* pollc */ 142 NULL /* scroll */ 143 }; 144 145 static inline void 146 r128fb_wait(struct r128fb_softc *sc, int slots) 147 { 148 uint32_t reg; 149 150 do { 151 reg = (bus_space_read_4(sc->sc_memt, sc->sc_regh, 152 R128_GUI_STAT) & R128_GUI_FIFOCNT_MASK); 153 } while (reg <= slots); 154 } 155 156 static void 157 r128fb_flush_engine(struct r128fb_softc *sc) 158 { 159 uint32_t reg; 160 161 reg = bus_space_read_4(sc->sc_memt, sc->sc_regh, R128_PC_NGUI_CTLSTAT); 162 reg |= R128_PC_FLUSH_ALL; 163 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_PC_NGUI_CTLSTAT, reg); 164 do { 165 reg = bus_space_read_4(sc->sc_memt, sc->sc_regh, 166 R128_PC_NGUI_CTLSTAT); 167 } while (reg & R128_PC_BUSY); 168 } 169 170 static int 171 r128fb_match(device_t parent, cfdata_t match, void *aux) 172 { 173 struct pci_attach_args *pa = (struct pci_attach_args *)aux; 174 175 if (PCI_CLASS(pa->pa_class) != PCI_CLASS_DISPLAY) 176 return 0; 177 if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_ATI) 178 return 0; 179 180 /* only cards tested on so far - likely need a list */ 181 if ((PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_ATI_RAGE1AGP4XT) || 182 (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_ATI_RAGE3AGP4XT) || 183 (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_ATI_RAGEGLPCI) || 184 (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_ATI_RAGE_MOB_M3_AGP)) 185 return 100; 186 return (0); 187 } 188 189 static void 190 r128fb_attach(device_t parent, device_t self, void *aux) 191 { 192 struct r128fb_softc *sc = device_private(self); 193 struct pci_attach_args *pa = aux; 194 struct rasops_info *ri; 195 bus_space_tag_t tag; 196 struct wsemuldisplaydev_attach_args aa; 197 prop_dictionary_t dict; 198 unsigned long defattr; 199 bool is_console = FALSE; 200 int i, j; 201 uint32_t reg, flags; 202 uint8_t cmap[768]; 203 204 sc->sc_pc = pa->pa_pc; 205 sc->sc_pcitag = pa->pa_tag; 206 sc->sc_memt = pa->pa_memt; 207 sc->sc_iot = pa->pa_iot; 208 sc->sc_dev = self; 209 210 pci_aprint_devinfo(pa, NULL); 211 212 /* fill in parameters from properties */ 213 dict = device_properties(self); 214 if (!prop_dictionary_get_uint32(dict, "width", &sc->sc_width)) { 215 aprint_error("%s: no width property\n", device_xname(self)); 216 return; 217 } 218 if (!prop_dictionary_get_uint32(dict, "height", &sc->sc_height)) { 219 aprint_error("%s: no height property\n", device_xname(self)); 220 return; 221 } 222 223 #ifdef GLYPHCACHE_DEBUG 224 /* leave some visible VRAM unused so we can see the glyph cache */ 225 sc->sc_height -= 200; 226 #endif 227 228 if (!prop_dictionary_get_uint32(dict, "depth", &sc->sc_depth)) { 229 aprint_error("%s: no depth property\n", device_xname(self)); 230 return; 231 } 232 if (!prop_dictionary_get_uint32(dict, "linebytes", &sc->sc_stride)) { 233 aprint_error("%s: no linebytes property\n", 234 device_xname(self)); 235 return; 236 } 237 238 prop_dictionary_get_bool(dict, "is_console", &is_console); 239 240 if (pci_mapreg_info(pa->pa_pc, pa->pa_tag, 0x10, PCI_MAPREG_TYPE_MEM, 241 &sc->sc_fb, &sc->sc_fbsize, &flags)) { 242 aprint_error("%s: failed to map the frame buffer.\n", 243 device_xname(sc->sc_dev)); 244 } 245 246 if (pci_mapreg_map(pa, 0x18, PCI_MAPREG_TYPE_MEM, 0, 247 &tag, &sc->sc_regh, &sc->sc_reg, &sc->sc_regsize)) { 248 aprint_error("%s: failed to map registers.\n", 249 device_xname(sc->sc_dev)); 250 } 251 252 aprint_normal("%s: %d MB aperture at 0x%08x\n", device_xname(self), 253 (int)(sc->sc_fbsize >> 20), (uint32_t)sc->sc_fb); 254 255 sc->sc_defaultscreen_descr = (struct wsscreen_descr){ 256 "default", 257 0, 0, 258 NULL, 259 8, 16, 260 WSSCREEN_WSCOLORS | WSSCREEN_HILIT | WSSCREEN_UNDERLINE | 261 WSSCREEN_RESIZE, 262 NULL 263 }; 264 sc->sc_screens[0] = &sc->sc_defaultscreen_descr; 265 sc->sc_screenlist = (struct wsscreen_list){1, sc->sc_screens}; 266 sc->sc_mode = WSDISPLAYIO_MODE_EMUL; 267 sc->sc_locked = 0; 268 269 vcons_init(&sc->vd, sc, &sc->sc_defaultscreen_descr, 270 &r128fb_accessops); 271 sc->vd.init_screen = r128fb_init_screen; 272 sc->vd.show_screen_cookie = &sc->sc_gc; 273 sc->vd.show_screen_cb = glyphcache_adapt; 274 275 /* init engine here */ 276 r128fb_init(sc); 277 278 ri = &sc->sc_console_screen.scr_ri; 279 280 sc->sc_gc.gc_bitblt = r128fb_bitblt; 281 sc->sc_gc.gc_blitcookie = sc; 282 sc->sc_gc.gc_rop = R128_ROP3_S; 283 if (is_console) { 284 vcons_init_screen(&sc->vd, &sc->sc_console_screen, 1, 285 &defattr); 286 sc->sc_console_screen.scr_flags |= VCONS_SCREEN_IS_STATIC; 287 288 r128fb_rectfill(sc, 0, 0, sc->sc_width, sc->sc_height, 289 ri->ri_devcmap[(defattr >> 16) & 0xff]); 290 sc->sc_defaultscreen_descr.textops = &ri->ri_ops; 291 sc->sc_defaultscreen_descr.capabilities = ri->ri_caps; 292 sc->sc_defaultscreen_descr.nrows = ri->ri_rows; 293 sc->sc_defaultscreen_descr.ncols = ri->ri_cols; 294 glyphcache_init(&sc->sc_gc, sc->sc_height + 5, 295 (0x800000 / sc->sc_stride) - sc->sc_height - 5, 296 sc->sc_width, 297 ri->ri_font->fontwidth, 298 ri->ri_font->fontheight, 299 defattr); 300 wsdisplay_cnattach(&sc->sc_defaultscreen_descr, ri, 0, 0, 301 defattr); 302 vcons_replay_msgbuf(&sc->sc_console_screen); 303 } else { 304 /* 305 * since we're not the console we can postpone the rest 306 * until someone actually allocates a screen for us 307 */ 308 if (sc->sc_console_screen.scr_ri.ri_rows == 0) { 309 /* do some minimal setup to avoid weirdnesses later */ 310 vcons_init_screen(&sc->vd, &sc->sc_console_screen, 1, 311 &defattr); 312 } else 313 (*ri->ri_ops.allocattr)(ri, 0, 0, 0, &defattr); 314 glyphcache_init(&sc->sc_gc, sc->sc_height + 5, 315 (0x800000 / sc->sc_stride) - sc->sc_height - 5, 316 sc->sc_width, 317 ri->ri_font->fontwidth, 318 ri->ri_font->fontheight, 319 defattr); 320 } 321 322 j = 0; 323 rasops_get_cmap(ri, cmap, sizeof(cmap)); 324 for (i = 0; i < 256; i++) { 325 sc->sc_cmap_red[i] = cmap[j]; 326 sc->sc_cmap_green[i] = cmap[j + 1]; 327 sc->sc_cmap_blue[i] = cmap[j + 2]; 328 r128fb_putpalreg(sc, i, cmap[j], cmap[j + 1], cmap[j + 2]); 329 j += 3; 330 } 331 332 /* no suspend/resume support yet */ 333 if (!pmf_device_register(sc->sc_dev, NULL, NULL)) 334 aprint_error_dev(sc->sc_dev, 335 "couldn't establish power handler\n"); 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, CFARGS_NONE); 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 { 464 struct wsdisplayio_fbinfo *fbi = data; 465 466 return wsdisplayio_get_fbinfo(&ms->scr_ri, fbi); 467 } 468 } 469 return EPASSTHROUGH; 470 } 471 472 static paddr_t 473 r128fb_mmap(void *v, void *vs, off_t offset, int prot) 474 { 475 struct vcons_data *vd = v; 476 struct r128fb_softc *sc = vd->cookie; 477 paddr_t pa; 478 479 /* 'regular' framebuffer mmap()ing */ 480 if (offset < sc->sc_fbsize) { 481 pa = bus_space_mmap(sc->sc_memt, sc->sc_fb + offset, 0, prot, 482 BUS_SPACE_MAP_LINEAR); 483 return pa; 484 } 485 486 /* 487 * restrict all other mappings to processes with superuser privileges 488 * or the kernel itself 489 */ 490 if (kauth_authorize_machdep(kauth_cred_get(), KAUTH_MACHDEP_UNMANAGEDMEM, 491 NULL, NULL, NULL, NULL) != 0) { 492 aprint_normal("%s: mmap() rejected.\n", 493 device_xname(sc->sc_dev)); 494 return -1; 495 } 496 497 if ((offset >= sc->sc_fb) && (offset < (sc->sc_fb + sc->sc_fbsize))) { 498 pa = bus_space_mmap(sc->sc_memt, offset, 0, prot, 499 BUS_SPACE_MAP_LINEAR); 500 return pa; 501 } 502 503 if ((offset >= sc->sc_reg) && 504 (offset < (sc->sc_reg + sc->sc_regsize))) { 505 pa = bus_space_mmap(sc->sc_memt, offset, 0, prot, 506 BUS_SPACE_MAP_LINEAR); 507 return pa; 508 } 509 510 #ifdef PCI_MAGIC_IO_RANGE 511 /* allow mapping of IO space */ 512 if ((offset >= PCI_MAGIC_IO_RANGE) && 513 (offset < PCI_MAGIC_IO_RANGE + 0x10000)) { 514 pa = bus_space_mmap(sc->sc_iot, offset - PCI_MAGIC_IO_RANGE, 515 0, prot, BUS_SPACE_MAP_LINEAR); 516 return pa; 517 } 518 #endif 519 520 #ifdef OFB_ALLOW_OTHERS 521 if (offset >= 0x80000000) { 522 pa = bus_space_mmap(sc->sc_memt, offset, 0, prot, 523 BUS_SPACE_MAP_LINEAR); 524 return pa; 525 } 526 #endif 527 return -1; 528 } 529 530 static void 531 r128fb_init_screen(void *cookie, struct vcons_screen *scr, 532 int existing, long *defattr) 533 { 534 struct r128fb_softc *sc = cookie; 535 struct rasops_info *ri = &scr->scr_ri; 536 537 ri->ri_depth = sc->sc_depth; 538 ri->ri_width = sc->sc_width; 539 ri->ri_height = sc->sc_height; 540 ri->ri_stride = sc->sc_stride; 541 ri->ri_flg = RI_CENTER; 542 if (sc->sc_depth == 8) 543 ri->ri_flg |= RI_8BIT_IS_RGB | RI_ENABLE_ALPHA | 544 RI_PREFER_ALPHA; 545 546 rasops_init(ri, 0, 0); 547 ri->ri_caps = WSSCREEN_WSCOLORS | WSSCREEN_HILIT | WSSCREEN_UNDERLINE | 548 WSSCREEN_RESIZE; 549 #ifdef VCONS_DRAW_INTR 550 scr->scr_flags |= VCONS_DONT_READ; 551 #endif 552 scr->scr_flags |= VCONS_LOADFONT; 553 554 rasops_reconfig(ri, sc->sc_height / ri->ri_font->fontheight, 555 sc->sc_width / ri->ri_font->fontwidth); 556 557 ri->ri_hw = scr; 558 ri->ri_ops.copyrows = r128fb_copyrows; 559 ri->ri_ops.copycols = r128fb_copycols; 560 ri->ri_ops.eraserows = r128fb_eraserows; 561 ri->ri_ops.erasecols = r128fb_erasecols; 562 ri->ri_ops.cursor = r128fb_cursor; 563 if (FONT_IS_ALPHA(ri->ri_font)) { 564 ri->ri_ops.putchar = r128fb_putchar_aa; 565 } else 566 ri->ri_ops.putchar = r128fb_putchar; 567 } 568 569 static int 570 r128fb_putcmap(struct r128fb_softc *sc, struct wsdisplay_cmap *cm) 571 { 572 u_char *r, *g, *b; 573 u_int index = cm->index; 574 u_int count = cm->count; 575 int i, error; 576 u_char rbuf[256], gbuf[256], bbuf[256]; 577 578 #ifdef R128FB_DEBUG 579 aprint_debug("putcmap: %d %d\n",index, count); 580 #endif 581 if (cm->index >= 256 || cm->count > 256 || 582 (cm->index + cm->count) > 256) 583 return EINVAL; 584 error = copyin(cm->red, &rbuf[index], count); 585 if (error) 586 return error; 587 error = copyin(cm->green, &gbuf[index], count); 588 if (error) 589 return error; 590 error = copyin(cm->blue, &bbuf[index], count); 591 if (error) 592 return error; 593 594 memcpy(&sc->sc_cmap_red[index], &rbuf[index], count); 595 memcpy(&sc->sc_cmap_green[index], &gbuf[index], count); 596 memcpy(&sc->sc_cmap_blue[index], &bbuf[index], count); 597 598 r = &sc->sc_cmap_red[index]; 599 g = &sc->sc_cmap_green[index]; 600 b = &sc->sc_cmap_blue[index]; 601 602 for (i = 0; i < count; i++) { 603 r128fb_putpalreg(sc, index, *r, *g, *b); 604 index++; 605 r++, g++, b++; 606 } 607 return 0; 608 } 609 610 static int 611 r128fb_getcmap(struct r128fb_softc *sc, struct wsdisplay_cmap *cm) 612 { 613 u_int index = cm->index; 614 u_int count = cm->count; 615 int error; 616 617 if (index >= 255 || count > 256 || index + count > 256) 618 return EINVAL; 619 620 error = copyout(&sc->sc_cmap_red[index], cm->red, count); 621 if (error) 622 return error; 623 error = copyout(&sc->sc_cmap_green[index], cm->green, count); 624 if (error) 625 return error; 626 error = copyout(&sc->sc_cmap_blue[index], cm->blue, count); 627 if (error) 628 return error; 629 630 return 0; 631 } 632 633 static void 634 r128fb_restore_palette(struct r128fb_softc *sc) 635 { 636 int i; 637 638 for (i = 0; i < (1 << sc->sc_depth); i++) { 639 r128fb_putpalreg(sc, i, sc->sc_cmap_red[i], 640 sc->sc_cmap_green[i], sc->sc_cmap_blue[i]); 641 } 642 } 643 644 static int 645 r128fb_putpalreg(struct r128fb_softc *sc, uint8_t idx, uint8_t r, uint8_t g, 646 uint8_t b) 647 { 648 uint32_t reg; 649 650 /* whack the DAC */ 651 reg = (r << 16) | (g << 8) | b; 652 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_PALETTE_INDEX, idx); 653 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_PALETTE_DATA, reg); 654 return 0; 655 } 656 657 static void 658 r128fb_init(struct r128fb_softc *sc) 659 { 660 uint32_t datatype, d, reg; 661 662 r128fb_flush_engine(sc); 663 664 r128fb_wait(sc, 9); 665 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_CRTC_OFFSET, 0); 666 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DEFAULT_OFFSET, 0); 667 /* pitch is in units of 8 pixels */ 668 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DEFAULT_PITCH, 669 sc->sc_width >> 3); 670 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_AUX_SC_CNTL, 0); 671 bus_space_write_4(sc->sc_memt, sc->sc_regh, 672 R128_DEFAULT_SC_BOTTOM_RIGHT, 673 R128_DEFAULT_SC_RIGHT_MAX | R128_DEFAULT_SC_BOTTOM_MAX); 674 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_SC_TOP_LEFT, 0); 675 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_SC_BOTTOM_RIGHT, 676 R128_DEFAULT_SC_RIGHT_MAX | R128_DEFAULT_SC_BOTTOM_MAX); 677 bus_space_write_4(sc->sc_memt, sc->sc_regh, 678 R128_DEFAULT_SC_BOTTOM_RIGHT, 679 R128_DEFAULT_SC_RIGHT_MAX | R128_DEFAULT_SC_BOTTOM_MAX); 680 681 #if 0 682 #if BYTE_ORDER == BIG_ENDIAN 683 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DP_DATATYPE, 684 R128_HOST_BIG_ENDIAN_EN); 685 #else 686 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DP_DATATYPE, 0); 687 #endif 688 #endif 689 r128fb_wait(sc, 7); 690 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_SRC_PITCH, 691 sc->sc_width >> 3); 692 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DST_PITCH, 693 sc->sc_width >> 3); 694 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_SRC_OFFSET, 0); 695 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DST_OFFSET, 0); 696 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DP_WRITE_MASK, 697 0xffffffff); 698 699 switch (sc->sc_depth) { 700 case 8: 701 datatype = R128_GMC_DST_8BPP_CI; 702 d = R128_CRTC_COLOR_8BIT; 703 break; 704 case 15: 705 datatype = R128_GMC_DST_15BPP; 706 d = R128_CRTC_COLOR_15BIT; 707 break; 708 case 16: 709 datatype = R128_GMC_DST_16BPP; 710 d = R128_CRTC_COLOR_16BIT; 711 break; 712 case 24: 713 datatype = R128_GMC_DST_24BPP; 714 d = R128_CRTC_COLOR_24BIT; 715 break; 716 case 32: 717 datatype = R128_GMC_DST_32BPP; 718 d = R128_CRTC_COLOR_32BIT; 719 break; 720 default: 721 aprint_error("%s: unsupported depth %d\n", 722 device_xname(sc->sc_dev), sc->sc_depth); 723 return; 724 } 725 sc->sc_master_cntl = R128_GMC_CLR_CMP_CNTL_DIS | 726 R128_GMC_AUX_CLIP_DIS | datatype; 727 reg = bus_space_read_4(sc->sc_memt, sc->sc_regh, R128_CRTC_GEN_CNTL); 728 DPRINTF("depth: %d\n", reg & R128_CRTC_PIX_WIDTH); 729 reg &= ~R128_CRTC_PIX_WIDTH; 730 reg |= d; 731 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_CRTC_GEN_CNTL, reg); 732 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_CRTC_PITCH, sc->sc_width >> 3); 733 r128fb_flush_engine(sc); 734 } 735 736 static void 737 r128fb_rectfill(struct r128fb_softc *sc, int x, int y, int wi, int he, 738 uint32_t colour) 739 { 740 741 r128fb_wait(sc, 5); 742 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DP_GUI_MASTER_CNTL, 743 R128_GMC_BRUSH_SOLID_COLOR | 744 R128_GMC_SRC_DATATYPE_COLOR | 745 R128_ROP3_P | 746 sc->sc_master_cntl); 747 748 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DP_BRUSH_FRGD_CLR, 749 colour); 750 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DP_CNTL, 751 R128_DST_X_LEFT_TO_RIGHT | R128_DST_Y_TOP_TO_BOTTOM); 752 /* now feed it coordinates */ 753 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DST_X_Y, 754 (x << 16) | y); 755 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DST_WIDTH_HEIGHT, 756 (wi << 16) | he); 757 } 758 759 static void 760 r128fb_bitblt(void *cookie, int xs, int ys, int xd, int yd, 761 int wi, int he, int rop) 762 { 763 struct r128fb_softc *sc = cookie; 764 uint32_t dp_cntl = 0; 765 766 r128fb_wait(sc, 5); 767 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DP_GUI_MASTER_CNTL, 768 R128_GMC_BRUSH_SOLID_COLOR | 769 R128_GMC_SRC_DATATYPE_COLOR | 770 rop | 771 R128_DP_SRC_SOURCE_MEMORY | 772 sc->sc_master_cntl); 773 774 if (yd <= ys) { 775 dp_cntl = R128_DST_Y_TOP_TO_BOTTOM; 776 } else { 777 ys += he - 1; 778 yd += he - 1; 779 } 780 if (xd <= xs) { 781 dp_cntl |= R128_DST_X_LEFT_TO_RIGHT; 782 } else { 783 xs += wi - 1; 784 xd += wi - 1; 785 } 786 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DP_CNTL, dp_cntl); 787 788 /* now feed it coordinates */ 789 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_SRC_X_Y, 790 (xs << 16) | ys); 791 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DST_X_Y, 792 (xd << 16) | yd); 793 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DST_WIDTH_HEIGHT, 794 (wi << 16) | he); 795 } 796 797 static void 798 r128fb_cursor(void *cookie, int on, int row, int col) 799 { 800 struct rasops_info *ri = cookie; 801 struct vcons_screen *scr = ri->ri_hw; 802 struct r128fb_softc *sc = scr->scr_cookie; 803 int x, y, wi, he; 804 805 wi = ri->ri_font->fontwidth; 806 he = ri->ri_font->fontheight; 807 808 if (sc->sc_mode == WSDISPLAYIO_MODE_EMUL) { 809 if (ri->ri_flg & RI_CURSOR) { 810 x = ri->ri_ccol * wi + ri->ri_xorigin; 811 y = ri->ri_crow * he + ri->ri_yorigin; 812 r128fb_bitblt(sc, x, y, x, y, wi, he, R128_ROP3_Dn); 813 ri->ri_flg &= ~RI_CURSOR; 814 } 815 ri->ri_crow = row; 816 ri->ri_ccol = col; 817 if (on) { 818 x = ri->ri_ccol * wi + ri->ri_xorigin; 819 y = ri->ri_crow * he + ri->ri_yorigin; 820 r128fb_bitblt(sc, x, y, x, y, wi, he, R128_ROP3_Dn); 821 ri->ri_flg |= RI_CURSOR; 822 } 823 } else { 824 scr->scr_ri.ri_crow = row; 825 scr->scr_ri.ri_ccol = col; 826 scr->scr_ri.ri_flg &= ~RI_CURSOR; 827 } 828 829 } 830 831 static void 832 r128fb_putchar(void *cookie, int row, int col, u_int c, long attr) 833 { 834 struct rasops_info *ri = cookie; 835 struct wsdisplay_font *font = PICK_FONT(ri, c); 836 struct vcons_screen *scr = ri->ri_hw; 837 struct r128fb_softc *sc = scr->scr_cookie; 838 void *data; 839 uint32_t fg, bg; 840 int i, x, y, wi, he, offset; 841 842 if (sc->sc_mode != WSDISPLAYIO_MODE_EMUL) 843 return; 844 845 if (!CHAR_IN_FONT(c, font)) 846 return; 847 848 wi = font->fontwidth; 849 he = font->fontheight; 850 851 bg = ri->ri_devcmap[(attr >> 16) & 0xf]; 852 fg = ri->ri_devcmap[(attr >> 24) & 0xf]; 853 x = ri->ri_xorigin + col * wi; 854 y = ri->ri_yorigin + row * he; 855 856 if (c == 0x20) { 857 r128fb_rectfill(sc, x, y, wi, he, bg); 858 return; 859 } 860 861 data = WSFONT_GLYPH(c, font); 862 863 r128fb_wait(sc, 8); 864 865 bus_space_write_4(sc->sc_memt, sc->sc_regh, 866 R128_DP_GUI_MASTER_CNTL, 867 R128_GMC_BRUSH_SOLID_COLOR | 868 R128_GMC_SRC_DATATYPE_MONO_FG_BG | 869 R128_ROP3_S | 870 R128_DP_SRC_SOURCE_HOST_DATA | 871 R128_GMC_DST_CLIPPING | 872 sc->sc_master_cntl); 873 874 bus_space_write_4(sc->sc_memt, sc->sc_regh, 875 R128_DP_CNTL, 876 R128_DST_Y_TOP_TO_BOTTOM | 877 R128_DST_X_LEFT_TO_RIGHT); 878 879 bus_space_write_4(sc->sc_memt, sc->sc_regh, 880 R128_DP_SRC_FRGD_CLR, fg); 881 bus_space_write_4(sc->sc_memt, sc->sc_regh, 882 R128_DP_SRC_BKGD_CLR, bg); 883 884 /* 885 * The Rage 128 doesn't have anything to skip pixels 886 * when colour expanding but all coordinates 887 * are signed so we just clip the leading bytes and 888 * trailing bits away 889 */ 890 bus_space_write_4(sc->sc_memt, sc->sc_regh, 891 R128_SC_RIGHT, x + wi - 1); 892 bus_space_write_4(sc->sc_memt, sc->sc_regh, 893 R128_SC_LEFT, x); 894 895 /* needed? */ 896 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_SRC_X_Y, 0); 897 898 offset = 32 - (font->stride << 3); 899 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DST_X_Y, 900 ((x - offset) << 16) | y); 901 bus_space_write_4(sc->sc_memt, sc->sc_regh, 902 R128_DST_WIDTH_HEIGHT, (32 << 16) | he); 903 904 r128fb_wait(sc, he); 905 switch (font->stride) { 906 case 1: { 907 uint8_t *data8 = data; 908 uint32_t reg; 909 for (i = 0; i < he; i++) { 910 reg = *data8; 911 bus_space_write_stream_4(sc->sc_memt, 912 sc->sc_regh, R128_HOST_DATA0, reg); 913 data8++; 914 } 915 break; 916 } 917 case 2: { 918 uint16_t *data16 = data; 919 uint32_t reg; 920 for (i = 0; i < he; i++) { 921 reg = *data16; 922 bus_space_write_stream_4(sc->sc_memt, 923 sc->sc_regh, R128_HOST_DATA0, reg); 924 data16++; 925 } 926 break; 927 } 928 } 929 } 930 931 static void 932 r128fb_putchar_aa(void *cookie, int row, int col, u_int c, long attr) 933 { 934 struct rasops_info *ri = cookie; 935 struct wsdisplay_font *font = PICK_FONT(ri, c); 936 struct vcons_screen *scr = ri->ri_hw; 937 struct r128fb_softc *sc = scr->scr_cookie; 938 uint32_t bg, latch = 0, bg8, fg8, pixel; 939 int i, x, y, wi, he, r, g, b, aval; 940 int r1, g1, b1, r0, g0, b0, fgo, bgo; 941 uint8_t *data8; 942 int rv, cnt = 0; 943 944 if (sc->sc_mode != WSDISPLAYIO_MODE_EMUL) 945 return; 946 947 if (!CHAR_IN_FONT(c, font)) 948 return; 949 950 wi = font->fontwidth; 951 he = font->fontheight; 952 953 bg = ri->ri_devcmap[(attr >> 16) & 0xf]; 954 x = ri->ri_xorigin + col * wi; 955 y = ri->ri_yorigin + row * he; 956 if (c == 0x20) { 957 r128fb_rectfill(sc, x, y, wi, he, bg); 958 return; 959 } 960 961 rv = glyphcache_try(&sc->sc_gc, c, x, y, attr); 962 if (rv == GC_OK) 963 return; 964 965 data8 = WSFONT_GLYPH(c, font); 966 967 r128fb_wait(sc, 5); 968 bus_space_write_4(sc->sc_memt, sc->sc_regh, 969 R128_DP_GUI_MASTER_CNTL, 970 R128_GMC_BRUSH_SOLID_COLOR | 971 R128_GMC_SRC_DATATYPE_COLOR | 972 R128_ROP3_S | 973 R128_DP_SRC_SOURCE_HOST_DATA | 974 sc->sc_master_cntl); 975 976 bus_space_write_4(sc->sc_memt, sc->sc_regh, 977 R128_DP_CNTL, 978 R128_DST_Y_TOP_TO_BOTTOM | 979 R128_DST_X_LEFT_TO_RIGHT); 980 981 /* needed? */ 982 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_SRC_X_Y, 0); 983 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DST_X_Y, 984 (x << 16) | y); 985 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DST_WIDTH_HEIGHT, 986 (wi << 16) | he); 987 988 /* 989 * we need the RGB colours here, so get offsets into rasops_cmap 990 */ 991 fgo = ((attr >> 24) & 0xf) * 3; 992 bgo = ((attr >> 16) & 0xf) * 3; 993 994 r0 = rasops_cmap[bgo]; 995 r1 = rasops_cmap[fgo]; 996 g0 = rasops_cmap[bgo + 1]; 997 g1 = rasops_cmap[fgo + 1]; 998 b0 = rasops_cmap[bgo + 2]; 999 b1 = rasops_cmap[fgo + 2]; 1000 #define R3G3B2(r, g, b) ((r & 0xe0) | ((g >> 3) & 0x1c) | (b >> 6)) 1001 bg8 = R3G3B2(r0, g0, b0); 1002 fg8 = R3G3B2(r1, g1, b1); 1003 1004 r128fb_wait(sc, 16); 1005 1006 for (i = 0; i < ri->ri_fontscale; i++) { 1007 aval = *data8; 1008 if (aval == 0) { 1009 pixel = bg8; 1010 } else if (aval == 255) { 1011 pixel = fg8; 1012 } else { 1013 r = aval * r1 + (255 - aval) * r0; 1014 g = aval * g1 + (255 - aval) * g0; 1015 b = aval * b1 + (255 - aval) * b0; 1016 pixel = ((r & 0xe000) >> 8) | 1017 ((g & 0xe000) >> 11) | 1018 ((b & 0xc000) >> 14); 1019 } 1020 latch = (latch << 8) | pixel; 1021 /* write in 32bit chunks */ 1022 if ((i & 3) == 3) { 1023 bus_space_write_stream_4(sc->sc_memt, sc->sc_regh, 1024 R128_HOST_DATA0, latch); 1025 /* 1026 * not strictly necessary, old data should be shifted 1027 * out 1028 */ 1029 latch = 0; 1030 cnt++; 1031 if (cnt > 15) { 1032 r128fb_wait(sc, 16); 1033 cnt = 0; 1034 } 1035 } 1036 data8++; 1037 } 1038 /* if we have pixels left in latch write them out */ 1039 if ((i & 3) != 0) { 1040 latch = latch << ((4 - (i & 3)) << 3); 1041 bus_space_write_stream_4(sc->sc_memt, sc->sc_regh, 1042 R128_HOST_DATA0, latch); 1043 } 1044 if (rv == GC_ADD) { 1045 glyphcache_add(&sc->sc_gc, c, x, y); 1046 } 1047 } 1048 1049 static void 1050 r128fb_copycols(void *cookie, int row, int srccol, int dstcol, int ncols) 1051 { 1052 struct rasops_info *ri = cookie; 1053 struct vcons_screen *scr = ri->ri_hw; 1054 struct r128fb_softc *sc = scr->scr_cookie; 1055 int32_t xs, xd, y, width, height; 1056 1057 if ((sc->sc_locked == 0) && (sc->sc_mode == WSDISPLAYIO_MODE_EMUL)) { 1058 xs = ri->ri_xorigin + ri->ri_font->fontwidth * srccol; 1059 xd = ri->ri_xorigin + ri->ri_font->fontwidth * dstcol; 1060 y = ri->ri_yorigin + ri->ri_font->fontheight * row; 1061 width = ri->ri_font->fontwidth * ncols; 1062 height = ri->ri_font->fontheight; 1063 r128fb_bitblt(sc, xs, y, xd, y, width, height, R128_ROP3_S); 1064 } 1065 } 1066 1067 static void 1068 r128fb_erasecols(void *cookie, int row, int startcol, int ncols, long fillattr) 1069 { 1070 struct rasops_info *ri = cookie; 1071 struct vcons_screen *scr = ri->ri_hw; 1072 struct r128fb_softc *sc = scr->scr_cookie; 1073 int32_t x, y, width, height, fg, bg, ul; 1074 1075 if ((sc->sc_locked == 0) && (sc->sc_mode == WSDISPLAYIO_MODE_EMUL)) { 1076 x = ri->ri_xorigin + ri->ri_font->fontwidth * startcol; 1077 y = ri->ri_yorigin + ri->ri_font->fontheight * row; 1078 width = ri->ri_font->fontwidth * ncols; 1079 height = ri->ri_font->fontheight; 1080 rasops_unpack_attr(fillattr, &fg, &bg, &ul); 1081 1082 r128fb_rectfill(sc, x, y, width, height, ri->ri_devcmap[bg]); 1083 } 1084 } 1085 1086 static void 1087 r128fb_copyrows(void *cookie, int srcrow, int dstrow, int nrows) 1088 { 1089 struct rasops_info *ri = cookie; 1090 struct vcons_screen *scr = ri->ri_hw; 1091 struct r128fb_softc *sc = scr->scr_cookie; 1092 int32_t x, ys, yd, width, height; 1093 1094 if ((sc->sc_locked == 0) && (sc->sc_mode == WSDISPLAYIO_MODE_EMUL)) { 1095 x = ri->ri_xorigin; 1096 ys = ri->ri_yorigin + ri->ri_font->fontheight * srcrow; 1097 yd = ri->ri_yorigin + ri->ri_font->fontheight * dstrow; 1098 width = ri->ri_emuwidth; 1099 height = ri->ri_font->fontheight * nrows; 1100 r128fb_bitblt(sc, x, ys, x, yd, width, height, R128_ROP3_S); 1101 } 1102 } 1103 1104 static void 1105 r128fb_eraserows(void *cookie, int row, int nrows, long fillattr) 1106 { 1107 struct rasops_info *ri = cookie; 1108 struct vcons_screen *scr = ri->ri_hw; 1109 struct r128fb_softc *sc = scr->scr_cookie; 1110 int32_t x, y, width, height, fg, bg, ul; 1111 1112 if ((sc->sc_locked == 0) && (sc->sc_mode == WSDISPLAYIO_MODE_EMUL)) { 1113 x = ri->ri_xorigin; 1114 y = ri->ri_yorigin + ri->ri_font->fontheight * row; 1115 width = ri->ri_emuwidth; 1116 height = ri->ri_font->fontheight * nrows; 1117 rasops_unpack_attr(fillattr, &fg, &bg, &ul); 1118 1119 r128fb_rectfill(sc, x, y, width, height, ri->ri_devcmap[bg]); 1120 } 1121 } 1122 1123 static void 1124 r128fb_set_backlight(struct r128fb_softc *sc, int level) 1125 { 1126 uint32_t reg; 1127 1128 /* 1129 * should we do nothing when backlight is off, should we just store the 1130 * level and use it when turning back on or should we just flip sc_bl_on 1131 * and turn the backlight on? 1132 * For now turn it on so a crashed screensaver can't get the user stuck 1133 * with a dark screen as long as hotkeys work 1134 */ 1135 if (level > 255) level = 255; 1136 if (level < 0) level = 0; 1137 if (level == sc->sc_bl_level) 1138 return; 1139 sc->sc_bl_level = level; 1140 if (sc->sc_bl_on == 0) 1141 sc->sc_bl_on = 1; 1142 level = 255 - level; 1143 reg = bus_space_read_4(sc->sc_memt, sc->sc_regh, R128_LVDS_GEN_CNTL); 1144 reg &= ~R128_LEVEL_MASK; 1145 reg |= (level << R128_LEVEL_SHIFT); 1146 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_LVDS_GEN_CNTL, reg); 1147 DPRINTF("backlight level: %d reg %08x\n", level, reg); 1148 } 1149 1150 static void 1151 r128fb_switch_backlight(struct r128fb_softc *sc, int on) 1152 { 1153 uint32_t reg; 1154 int level; 1155 1156 if (on == sc->sc_bl_on) 1157 return; 1158 sc->sc_bl_on = on; 1159 reg = bus_space_read_4(sc->sc_memt, sc->sc_regh, R128_LVDS_GEN_CNTL); 1160 reg &= ~R128_LEVEL_MASK; 1161 level = on ? 255 - sc->sc_bl_level : 255; 1162 reg |= level << R128_LEVEL_SHIFT; 1163 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_LVDS_GEN_CNTL, reg); 1164 DPRINTF("backlight state: %d reg %08x\n", on, reg); 1165 } 1166 1167 1168 static void 1169 r128fb_brightness_up(device_t dev) 1170 { 1171 struct r128fb_softc *sc = device_private(dev); 1172 1173 r128fb_set_backlight(sc, sc->sc_bl_level + 8); 1174 } 1175 1176 static void 1177 r128fb_brightness_down(device_t dev) 1178 { 1179 struct r128fb_softc *sc = device_private(dev); 1180 1181 r128fb_set_backlight(sc, sc->sc_bl_level - 8); 1182 } 1183
Indexes created Fri Sep 26 20:09:58 GMT 2025