r128fb.c revision 1.32
1 /* $NetBSD: r128fb.c,v 1.32 2012/03/13 18:40:33 elad Exp $ */ 2 3 /* 4 * Copyright (c) 2007 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 1.32 2012/03/13 18:40:33 elad 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 extern const u_char rasops_cmap[768]; 107 108 static int r128fb_ioctl(void *, void *, u_long, void *, int, 109 struct lwp *); 110 static paddr_t r128fb_mmap(void *, void *, off_t, int); 111 static void r128fb_init_screen(void *, struct vcons_screen *, int, long *); 112 113 static int r128fb_putcmap(struct r128fb_softc *, struct wsdisplay_cmap *); 114 static int r128fb_getcmap(struct r128fb_softc *, struct wsdisplay_cmap *); 115 static void r128fb_restore_palette(struct r128fb_softc *); 116 static int r128fb_putpalreg(struct r128fb_softc *, uint8_t, uint8_t, 117 uint8_t, uint8_t); 118 119 static void r128fb_init(struct r128fb_softc *); 120 static void r128fb_flush_engine(struct r128fb_softc *); 121 static void r128fb_rectfill(struct r128fb_softc *, int, int, int, int, 122 uint32_t); 123 static void r128fb_bitblt(void *, int, int, int, int, int, 124 int, int); 125 126 static void r128fb_cursor(void *, int, int, int); 127 static void r128fb_putchar(void *, int, int, u_int, long); 128 static void r128fb_putchar_aa(void *, int, int, u_int, long); 129 static void r128fb_copycols(void *, int, int, int, int); 130 static void r128fb_erasecols(void *, int, int, int, long); 131 static void r128fb_copyrows(void *, int, int, int); 132 static void r128fb_eraserows(void *, int, int, long); 133 134 static void r128fb_brightness_up(device_t); 135 static void r128fb_brightness_down(device_t); 136 /* set backlight level */ 137 static void r128fb_set_backlight(struct r128fb_softc *, int); 138 /* turn backlight on and off without messing with the level */ 139 static void r128fb_switch_backlight(struct r128fb_softc *, int); 140 141 struct wsdisplay_accessops r128fb_accessops = { 142 r128fb_ioctl, 143 r128fb_mmap, 144 NULL, /* alloc_screen */ 145 NULL, /* free_screen */ 146 NULL, /* show_screen */ 147 NULL, /* load_font */ 148 NULL, /* pollc */ 149 NULL /* scroll */ 150 }; 151 152 static inline void 153 r128fb_wait(struct r128fb_softc *sc, int slots) 154 { 155 uint32_t reg; 156 157 do { 158 reg = (bus_space_read_4(sc->sc_memt, sc->sc_regh, 159 R128_GUI_STAT) & R128_GUI_FIFOCNT_MASK); 160 } while (reg <= slots); 161 } 162 163 static void 164 r128fb_flush_engine(struct r128fb_softc *sc) 165 { 166 uint32_t reg; 167 168 reg = bus_space_read_4(sc->sc_memt, sc->sc_regh, R128_PC_NGUI_CTLSTAT); 169 reg |= R128_PC_FLUSH_ALL; 170 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_PC_NGUI_CTLSTAT, reg); 171 do { 172 reg = bus_space_read_4(sc->sc_memt, sc->sc_regh, 173 R128_PC_NGUI_CTLSTAT); 174 } while (reg & R128_PC_BUSY); 175 } 176 177 static int 178 r128fb_match(device_t parent, cfdata_t match, void *aux) 179 { 180 struct pci_attach_args *pa = (struct pci_attach_args *)aux; 181 182 if (PCI_CLASS(pa->pa_class) != PCI_CLASS_DISPLAY) 183 return 0; 184 if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_ATI) 185 return 0; 186 187 /* only cards tested on so far - likely need a list */ 188 if ((PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_ATI_RAGE1AGP4XT) || 189 (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_ATI_RAGE3AGP4XT) || 190 (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_ATI_RAGEGLPCI) || 191 (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_ATI_RAGE_MOB_M3_AGP)) 192 return 100; 193 return (0); 194 } 195 196 static void 197 r128fb_attach(device_t parent, device_t self, void *aux) 198 { 199 struct r128fb_softc *sc = device_private(self); 200 struct pci_attach_args *pa = aux; 201 struct rasops_info *ri; 202 bus_space_tag_t tag; 203 struct wsemuldisplaydev_attach_args aa; 204 prop_dictionary_t dict; 205 unsigned long defattr; 206 bool is_console; 207 int i, j; 208 uint32_t reg, flags; 209 uint8_t tmp; 210 211 sc->sc_pc = pa->pa_pc; 212 sc->sc_pcitag = pa->pa_tag; 213 sc->sc_memt = pa->pa_memt; 214 sc->sc_iot = pa->pa_iot; 215 sc->sc_dev = self; 216 217 pci_aprint_devinfo(pa, NULL); 218 219 /* fill in parameters from properties */ 220 dict = device_properties(self); 221 if (!prop_dictionary_get_uint32(dict, "width", &sc->sc_width)) { 222 aprint_error("%s: no width property\n", device_xname(self)); 223 return; 224 } 225 if (!prop_dictionary_get_uint32(dict, "height", &sc->sc_height)) { 226 aprint_error("%s: no height property\n", device_xname(self)); 227 return; 228 } 229 if (!prop_dictionary_get_uint32(dict, "depth", &sc->sc_depth)) { 230 aprint_error("%s: no depth property\n", device_xname(self)); 231 return; 232 } 233 if (!prop_dictionary_get_uint32(dict, "linebytes", &sc->sc_stride)) { 234 aprint_error("%s: no linebytes property\n", 235 device_xname(self)); 236 return; 237 } 238 239 prop_dictionary_get_bool(dict, "is_console", &is_console); 240 241 if (pci_mapreg_info(pa->pa_pc, pa->pa_tag, 0x10, PCI_MAPREG_TYPE_MEM, 242 &sc->sc_fb, &sc->sc_fbsize, &flags)) { 243 aprint_error("%s: failed to map the frame buffer.\n", 244 device_xname(sc->sc_dev)); 245 } 246 247 if (pci_mapreg_map(pa, 0x18, PCI_MAPREG_TYPE_MEM, 0, 248 &tag, &sc->sc_regh, &sc->sc_reg, &sc->sc_regsize)) { 249 aprint_error("%s: failed to map registers.\n", 250 device_xname(sc->sc_dev)); 251 } 252 253 aprint_normal("%s: %d MB aperture at 0x%08x\n", device_xname(self), 254 (int)(sc->sc_fbsize >> 20), (uint32_t)sc->sc_fb); 255 256 sc->sc_defaultscreen_descr = (struct wsscreen_descr){ 257 "default", 258 0, 0, 259 NULL, 260 8, 16, 261 WSSCREEN_WSCOLORS | WSSCREEN_HILIT, 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; 272 273 /* init engine here */ 274 r128fb_init(sc); 275 276 ri = &sc->sc_console_screen.scr_ri; 277 278 j = 0; 279 if (sc->sc_depth == 8) { 280 /* generate an r3g3b2 colour map */ 281 for (i = 0; i < 256; i++) { 282 tmp = i & 0xe0; 283 /* 284 * replicate bits so 0xe0 maps to a red value of 0xff 285 * in order to make white look actually white 286 */ 287 tmp |= (tmp >> 3) | (tmp >> 6); 288 sc->sc_cmap_red[i] = tmp; 289 290 tmp = (i & 0x1c) << 3; 291 tmp |= (tmp >> 3) | (tmp >> 6); 292 sc->sc_cmap_green[i] = tmp; 293 294 tmp = (i & 0x03) << 6; 295 tmp |= tmp >> 2; 296 tmp |= tmp >> 4; 297 sc->sc_cmap_blue[i] = tmp; 298 299 r128fb_putpalreg(sc, i, sc->sc_cmap_red[i], 300 sc->sc_cmap_green[i], 301 sc->sc_cmap_blue[i]); 302 } 303 } else { 304 /* steal rasops' ANSI cmap */ 305 for (i = 0; i < 256; i++) { 306 sc->sc_cmap_red[i] = i; 307 sc->sc_cmap_green[i] = i; 308 sc->sc_cmap_blue[i] = i; 309 r128fb_putpalreg(sc, i, i, i, i); 310 j += 3; 311 } 312 } 313 314 sc->sc_gc.gc_bitblt = r128fb_bitblt; 315 sc->sc_gc.gc_blitcookie = sc; 316 sc->sc_gc.gc_rop = R128_ROP3_S; 317 if (is_console) { 318 vcons_init_screen(&sc->vd, &sc->sc_console_screen, 1, 319 &defattr); 320 sc->sc_console_screen.scr_flags |= VCONS_SCREEN_IS_STATIC; 321 322 r128fb_rectfill(sc, 0, 0, sc->sc_width, sc->sc_height, 323 ri->ri_devcmap[(defattr >> 16) & 0xff]); 324 sc->sc_defaultscreen_descr.textops = &ri->ri_ops; 325 sc->sc_defaultscreen_descr.capabilities = ri->ri_caps; 326 sc->sc_defaultscreen_descr.nrows = ri->ri_rows; 327 sc->sc_defaultscreen_descr.ncols = ri->ri_cols; 328 glyphcache_init(&sc->sc_gc, sc->sc_height + 5, 329 sc->sc_width, 330 (0x800000 / sc->sc_stride) - sc->sc_height - 5, 331 ri->ri_font->fontwidth, 332 ri->ri_font->fontheight, 333 defattr); 334 wsdisplay_cnattach(&sc->sc_defaultscreen_descr, ri, 0, 0, 335 defattr); 336 vcons_replay_msgbuf(&sc->sc_console_screen); 337 } else { 338 /* 339 * since we're not the console we can postpone the rest 340 * until someone actually allocates a screen for us 341 */ 342 (*ri->ri_ops.allocattr)(ri, 0, 0, 0, &defattr); 343 glyphcache_init(&sc->sc_gc, sc->sc_height, 344 sc->sc_width, 345 (0x800000 / sc->sc_stride) - sc->sc_height, 346 ri->ri_font->fontwidth, 347 ri->ri_font->fontheight, 348 defattr); 349 } 350 351 /* no suspend/resume support yet */ 352 pmf_device_register(sc->sc_dev, NULL, NULL); 353 354 reg = bus_space_read_4(sc->sc_memt, sc->sc_regh, R128_LVDS_GEN_CNTL); 355 DPRINTF("R128_LVDS_GEN_CNTL: %08x\n", reg); 356 if (reg & R128_LVDS_ON) { 357 sc->sc_have_backlight = 1; 358 sc->sc_bl_on = 1; 359 sc->sc_bl_level = 255 - 360 ((reg & R128_LEVEL_MASK) >> R128_LEVEL_SHIFT); 361 pmf_event_register(sc->sc_dev, PMFE_DISPLAY_BRIGHTNESS_UP, 362 r128fb_brightness_up, TRUE); 363 pmf_event_register(sc->sc_dev, PMFE_DISPLAY_BRIGHTNESS_DOWN, 364 r128fb_brightness_down, TRUE); 365 aprint_verbose("%s: LVDS output is active, enabling backlight" 366 " control\n", device_xname(self)); 367 } else 368 sc->sc_have_backlight = 0; 369 370 aa.console = is_console; 371 aa.scrdata = &sc->sc_screenlist; 372 aa.accessops = &r128fb_accessops; 373 aa.accesscookie = &sc->vd; 374 375 config_found(sc->sc_dev, &aa, wsemuldisplaydevprint); 376 } 377 378 static int 379 r128fb_ioctl(void *v, void *vs, u_long cmd, void *data, int flag, 380 struct lwp *l) 381 { 382 struct vcons_data *vd = v; 383 struct r128fb_softc *sc = vd->cookie; 384 struct wsdisplay_fbinfo *wdf; 385 struct vcons_screen *ms = vd->active; 386 struct wsdisplay_param *param; 387 388 switch (cmd) { 389 case WSDISPLAYIO_GTYPE: 390 *(u_int *)data = WSDISPLAY_TYPE_PCIMISC; 391 return 0; 392 393 /* PCI config read/write passthrough. */ 394 case PCI_IOC_CFGREAD: 395 case PCI_IOC_CFGWRITE: 396 return pci_devioctl(sc->sc_pc, sc->sc_pcitag, 397 cmd, data, flag, l); 398 399 case WSDISPLAYIO_GET_BUSID: 400 return wsdisplayio_busid_pci(sc->sc_dev, sc->sc_pc, sc->sc_pcitag, data); 401 402 case WSDISPLAYIO_GINFO: 403 if (ms == NULL) 404 return ENODEV; 405 wdf = (void *)data; 406 wdf->height = ms->scr_ri.ri_height; 407 wdf->width = ms->scr_ri.ri_width; 408 wdf->depth = ms->scr_ri.ri_depth; 409 wdf->cmsize = 256; 410 return 0; 411 412 case WSDISPLAYIO_GETCMAP: 413 return r128fb_getcmap(sc, 414 (struct wsdisplay_cmap *)data); 415 416 case WSDISPLAYIO_PUTCMAP: 417 return r128fb_putcmap(sc, 418 (struct wsdisplay_cmap *)data); 419 420 case WSDISPLAYIO_LINEBYTES: 421 *(u_int *)data = sc->sc_stride; 422 return 0; 423 424 case WSDISPLAYIO_SMODE: { 425 int new_mode = *(int*)data; 426 if (new_mode != sc->sc_mode) { 427 sc->sc_mode = new_mode; 428 if(new_mode == WSDISPLAYIO_MODE_EMUL) { 429 r128fb_init(sc); 430 r128fb_restore_palette(sc); 431 glyphcache_wipe(&sc->sc_gc); 432 r128fb_rectfill(sc, 0, 0, sc->sc_width, 433 sc->sc_height, ms->scr_ri.ri_devcmap[ 434 (ms->scr_defattr >> 16) & 0xff]); 435 vcons_redraw_screen(ms); 436 } 437 } 438 } 439 return 0; 440 441 case WSDISPLAYIO_GETPARAM: 442 param = (struct wsdisplay_param *)data; 443 if (sc->sc_have_backlight == 0) 444 return EPASSTHROUGH; 445 switch (param->param) { 446 case WSDISPLAYIO_PARAM_BRIGHTNESS: 447 param->min = 0; 448 param->max = 255; 449 param->curval = sc->sc_bl_level; 450 return 0; 451 case WSDISPLAYIO_PARAM_BACKLIGHT: 452 param->min = 0; 453 param->max = 1; 454 param->curval = sc->sc_bl_on; 455 return 0; 456 } 457 return EPASSTHROUGH; 458 459 case WSDISPLAYIO_SETPARAM: 460 param = (struct wsdisplay_param *)data; 461 if (sc->sc_have_backlight == 0) 462 return EPASSTHROUGH; 463 switch (param->param) { 464 case WSDISPLAYIO_PARAM_BRIGHTNESS: 465 r128fb_set_backlight(sc, param->curval); 466 return 0; 467 case WSDISPLAYIO_PARAM_BACKLIGHT: 468 r128fb_switch_backlight(sc, param->curval); 469 return 0; 470 } 471 return EPASSTHROUGH; 472 case WSDISPLAYIO_GET_EDID: { 473 struct wsdisplayio_edid_info *d = data; 474 return wsdisplayio_get_edid(sc->sc_dev, d); 475 } 476 } 477 return EPASSTHROUGH; 478 } 479 480 static paddr_t 481 r128fb_mmap(void *v, void *vs, off_t offset, int prot) 482 { 483 struct vcons_data *vd = v; 484 struct r128fb_softc *sc = vd->cookie; 485 paddr_t pa; 486 487 /* 'regular' framebuffer mmap()ing */ 488 if (offset < sc->sc_fbsize) { 489 pa = bus_space_mmap(sc->sc_memt, sc->sc_fb + offset, 0, prot, 490 BUS_SPACE_MAP_LINEAR); 491 return pa; 492 } 493 494 /* 495 * restrict all other mappings to processes with superuser privileges 496 * or the kernel itself 497 */ 498 if (kauth_authorize_machdep(kauth_cred_get(), KAUTH_MACHDEP_UNMANAGEDMEM, 499 NULL, NULL, NULL, NULL) != 0) { 500 aprint_normal("%s: mmap() rejected.\n", 501 device_xname(sc->sc_dev)); 502 return -1; 503 } 504 505 if ((offset >= sc->sc_fb) && (offset < (sc->sc_fb + sc->sc_fbsize))) { 506 pa = bus_space_mmap(sc->sc_memt, offset, 0, prot, 507 BUS_SPACE_MAP_LINEAR); 508 return pa; 509 } 510 511 if ((offset >= sc->sc_reg) && 512 (offset < (sc->sc_reg + sc->sc_regsize))) { 513 pa = bus_space_mmap(sc->sc_memt, offset, 0, prot, 514 BUS_SPACE_MAP_LINEAR); 515 return pa; 516 } 517 518 #ifdef PCI_MAGIC_IO_RANGE 519 /* allow mapping of IO space */ 520 if ((offset >= PCI_MAGIC_IO_RANGE) && 521 (offset < PCI_MAGIC_IO_RANGE + 0x10000)) { 522 pa = bus_space_mmap(sc->sc_iot, offset - PCI_MAGIC_IO_RANGE, 523 0, prot, BUS_SPACE_MAP_LINEAR); 524 return pa; 525 } 526 #endif 527 528 #ifdef OFB_ALLOW_OTHERS 529 if (offset >= 0x80000000) { 530 pa = bus_space_mmap(sc->sc_memt, offset, 0, prot, 531 BUS_SPACE_MAP_LINEAR); 532 return pa; 533 } 534 #endif 535 return -1; 536 } 537 538 static void 539 r128fb_init_screen(void *cookie, struct vcons_screen *scr, 540 int existing, long *defattr) 541 { 542 struct r128fb_softc *sc = cookie; 543 struct rasops_info *ri = &scr->scr_ri; 544 545 ri->ri_depth = sc->sc_depth; 546 ri->ri_width = sc->sc_width; 547 ri->ri_height = sc->sc_height; 548 ri->ri_stride = sc->sc_stride; 549 ri->ri_flg = RI_CENTER; 550 if (sc->sc_depth == 8) 551 ri->ri_flg |= RI_8BIT_IS_RGB | RI_ENABLE_ALPHA; 552 553 rasops_init(ri, 0, 0); 554 ri->ri_caps = WSSCREEN_WSCOLORS; 555 #ifdef VCONS_DRAW_INTR 556 scr->scr_flags |= VCONS_DONT_READ; 557 #endif 558 559 rasops_reconfig(ri, sc->sc_height / ri->ri_font->fontheight, 560 sc->sc_width / ri->ri_font->fontwidth); 561 562 ri->ri_hw = scr; 563 ri->ri_ops.copyrows = r128fb_copyrows; 564 ri->ri_ops.copycols = r128fb_copycols; 565 ri->ri_ops.eraserows = r128fb_eraserows; 566 ri->ri_ops.erasecols = r128fb_erasecols; 567 ri->ri_ops.cursor = r128fb_cursor; 568 if (FONT_IS_ALPHA(ri->ri_font)) { 569 ri->ri_ops.putchar = r128fb_putchar_aa; 570 ri->ri_ops.allocattr(ri, WS_DEFAULT_FG, WS_DEFAULT_BG, 571 0, &sc->sc_gc.gc_attr); 572 } else 573 ri->ri_ops.putchar = r128fb_putchar; 574 } 575 576 static int 577 r128fb_putcmap(struct r128fb_softc *sc, struct wsdisplay_cmap *cm) 578 { 579 u_char *r, *g, *b; 580 u_int index = cm->index; 581 u_int count = cm->count; 582 int i, error; 583 u_char rbuf[256], gbuf[256], bbuf[256]; 584 585 #ifdef R128FB_DEBUG 586 aprint_debug("putcmap: %d %d\n",index, count); 587 #endif 588 if (cm->index >= 256 || cm->count > 256 || 589 (cm->index + cm->count) > 256) 590 return EINVAL; 591 error = copyin(cm->red, &rbuf[index], count); 592 if (error) 593 return error; 594 error = copyin(cm->green, &gbuf[index], count); 595 if (error) 596 return error; 597 error = copyin(cm->blue, &bbuf[index], count); 598 if (error) 599 return error; 600 601 memcpy(&sc->sc_cmap_red[index], &rbuf[index], count); 602 memcpy(&sc->sc_cmap_green[index], &gbuf[index], count); 603 memcpy(&sc->sc_cmap_blue[index], &bbuf[index], count); 604 605 r = &sc->sc_cmap_red[index]; 606 g = &sc->sc_cmap_green[index]; 607 b = &sc->sc_cmap_blue[index]; 608 609 for (i = 0; i < count; i++) { 610 r128fb_putpalreg(sc, index, *r, *g, *b); 611 index++; 612 r++, g++, b++; 613 } 614 return 0; 615 } 616 617 static int 618 r128fb_getcmap(struct r128fb_softc *sc, struct wsdisplay_cmap *cm) 619 { 620 u_int index = cm->index; 621 u_int count = cm->count; 622 int error; 623 624 if (index >= 255 || count > 256 || index + count > 256) 625 return EINVAL; 626 627 error = copyout(&sc->sc_cmap_red[index], cm->red, count); 628 if (error) 629 return error; 630 error = copyout(&sc->sc_cmap_green[index], cm->green, count); 631 if (error) 632 return error; 633 error = copyout(&sc->sc_cmap_blue[index], cm->blue, count); 634 if (error) 635 return error; 636 637 return 0; 638 } 639 640 static void 641 r128fb_restore_palette(struct r128fb_softc *sc) 642 { 643 int i; 644 645 for (i = 0; i < (1 << sc->sc_depth); i++) { 646 r128fb_putpalreg(sc, i, sc->sc_cmap_red[i], 647 sc->sc_cmap_green[i], sc->sc_cmap_blue[i]); 648 } 649 } 650 651 static int 652 r128fb_putpalreg(struct r128fb_softc *sc, uint8_t idx, uint8_t r, uint8_t g, 653 uint8_t b) 654 { 655 uint32_t reg; 656 657 /* whack the DAC */ 658 reg = (r << 16) | (g << 8) | b; 659 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_PALETTE_INDEX, idx); 660 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_PALETTE_DATA, reg); 661 return 0; 662 } 663 664 static void 665 r128fb_init(struct r128fb_softc *sc) 666 { 667 uint32_t datatype, d, reg; 668 669 r128fb_flush_engine(sc); 670 671 r128fb_wait(sc, 9); 672 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_CRTC_OFFSET, 0); 673 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DEFAULT_OFFSET, 0); 674 /* pitch is in units of 8 pixels */ 675 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DEFAULT_PITCH, 676 sc->sc_width >> 3); 677 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_AUX_SC_CNTL, 0); 678 bus_space_write_4(sc->sc_memt, sc->sc_regh, 679 R128_DEFAULT_SC_BOTTOM_RIGHT, 680 R128_DEFAULT_SC_RIGHT_MAX | R128_DEFAULT_SC_BOTTOM_MAX); 681 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_SC_TOP_LEFT, 0); 682 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_SC_BOTTOM_RIGHT, 683 R128_DEFAULT_SC_RIGHT_MAX | R128_DEFAULT_SC_BOTTOM_MAX); 684 bus_space_write_4(sc->sc_memt, sc->sc_regh, 685 R128_DEFAULT_SC_BOTTOM_RIGHT, 686 R128_DEFAULT_SC_RIGHT_MAX | R128_DEFAULT_SC_BOTTOM_MAX); 687 688 #if 0 689 #if BYTE_ORDER == BIG_ENDIAN 690 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DP_DATATYPE, 691 R128_HOST_BIG_ENDIAN_EN); 692 #else 693 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DP_DATATYPE, 0); 694 #endif 695 #endif 696 r128fb_wait(sc, 7); 697 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_SRC_PITCH, 698 sc->sc_width >> 3); 699 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DST_PITCH, 700 sc->sc_width >> 3); 701 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_SRC_OFFSET, 0); 702 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DST_OFFSET, 0); 703 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DP_WRITE_MASK, 704 0xffffffff); 705 706 switch (sc->sc_depth) { 707 case 8: 708 datatype = R128_GMC_DST_8BPP_CI; 709 d = R128_CRTC_COLOR_8BIT; 710 break; 711 case 15: 712 datatype = R128_GMC_DST_15BPP; 713 d = R128_CRTC_COLOR_15BIT; 714 break; 715 case 16: 716 datatype = R128_GMC_DST_16BPP; 717 d = R128_CRTC_COLOR_16BIT; 718 break; 719 case 24: 720 datatype = R128_GMC_DST_24BPP; 721 d = R128_CRTC_COLOR_24BIT; 722 break; 723 case 32: 724 datatype = R128_GMC_DST_32BPP; 725 d = R128_CRTC_COLOR_32BIT; 726 break; 727 default: 728 aprint_error("%s: unsupported depth %d\n", 729 device_xname(sc->sc_dev), sc->sc_depth); 730 return; 731 } 732 sc->sc_master_cntl = R128_GMC_CLR_CMP_CNTL_DIS | 733 R128_GMC_AUX_CLIP_DIS | datatype; 734 reg = bus_space_read_4(sc->sc_memt, sc->sc_regh, R128_CRTC_GEN_CNTL); 735 DPRINTF("depth: %d\n", reg & R128_CRTC_PIX_WIDTH); 736 reg &= ~R128_CRTC_PIX_WIDTH; 737 reg |= d; 738 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_CRTC_GEN_CNTL, reg); 739 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_CRTC_PITCH, sc->sc_width >> 3); 740 r128fb_flush_engine(sc); 741 } 742 743 static void 744 r128fb_rectfill(struct r128fb_softc *sc, int x, int y, int wi, int he, 745 uint32_t colour) 746 { 747 748 r128fb_wait(sc, 5); 749 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DP_GUI_MASTER_CNTL, 750 R128_GMC_BRUSH_SOLID_COLOR | 751 R128_GMC_SRC_DATATYPE_COLOR | 752 R128_ROP3_P | 753 sc->sc_master_cntl); 754 755 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DP_BRUSH_FRGD_CLR, 756 colour); 757 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DP_CNTL, 758 R128_DST_X_LEFT_TO_RIGHT | R128_DST_Y_TOP_TO_BOTTOM); 759 /* now feed it coordinates */ 760 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DST_X_Y, 761 (x << 16) | y); 762 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DST_WIDTH_HEIGHT, 763 (wi << 16) | he); 764 } 765 766 static void 767 r128fb_bitblt(void *cookie, int xs, int ys, int xd, int yd, 768 int wi, int he, int rop) 769 { 770 struct r128fb_softc *sc = cookie; 771 uint32_t dp_cntl = 0; 772 773 r128fb_wait(sc, 5); 774 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DP_GUI_MASTER_CNTL, 775 R128_GMC_BRUSH_SOLID_COLOR | 776 R128_GMC_SRC_DATATYPE_COLOR | 777 rop | 778 R128_DP_SRC_SOURCE_MEMORY | 779 sc->sc_master_cntl); 780 781 if (yd <= ys) { 782 dp_cntl = R128_DST_Y_TOP_TO_BOTTOM; 783 } else { 784 ys += he - 1; 785 yd += he - 1; 786 } 787 if (xd <= xs) { 788 dp_cntl |= R128_DST_X_LEFT_TO_RIGHT; 789 } else { 790 xs += wi - 1; 791 xd += wi - 1; 792 } 793 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DP_CNTL, dp_cntl); 794 795 /* now feed it coordinates */ 796 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_SRC_X_Y, 797 (xs << 16) | ys); 798 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DST_X_Y, 799 (xd << 16) | yd); 800 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DST_WIDTH_HEIGHT, 801 (wi << 16) | he); 802 } 803 804 static void 805 r128fb_cursor(void *cookie, int on, int row, int col) 806 { 807 struct rasops_info *ri = cookie; 808 struct vcons_screen *scr = ri->ri_hw; 809 struct r128fb_softc *sc = scr->scr_cookie; 810 int x, y, wi, he; 811 812 wi = ri->ri_font->fontwidth; 813 he = ri->ri_font->fontheight; 814 815 if (sc->sc_mode == WSDISPLAYIO_MODE_EMUL) { 816 x = ri->ri_ccol * wi + ri->ri_xorigin; 817 y = ri->ri_crow * he + ri->ri_yorigin; 818 if (ri->ri_flg & RI_CURSOR) { 819 r128fb_bitblt(sc, x, y, x, y, wi, he, R128_ROP3_Dn); 820 ri->ri_flg &= ~RI_CURSOR; 821 } 822 ri->ri_crow = row; 823 ri->ri_ccol = col; 824 if (on) { 825 x = ri->ri_ccol * wi + ri->ri_xorigin; 826 y = ri->ri_crow * he + ri->ri_yorigin; 827 r128fb_bitblt(sc, x, y, x, y, wi, he, R128_ROP3_Dn); 828 ri->ri_flg |= RI_CURSOR; 829 } 830 } else { 831 scr->scr_ri.ri_crow = row; 832 scr->scr_ri.ri_ccol = col; 833 scr->scr_ri.ri_flg &= ~RI_CURSOR; 834 } 835 836 } 837 838 static void 839 r128fb_putchar(void *cookie, int row, int col, u_int c, long attr) 840 { 841 struct rasops_info *ri = cookie; 842 struct wsdisplay_font *font = PICK_FONT(ri, c); 843 struct vcons_screen *scr = ri->ri_hw; 844 struct r128fb_softc *sc = scr->scr_cookie; 845 void *data; 846 uint32_t fg, bg; 847 int i, x, y, wi, he, offset; 848 849 if (sc->sc_mode != WSDISPLAYIO_MODE_EMUL) 850 return; 851 852 if (!CHAR_IN_FONT(c, font)) 853 return; 854 855 wi = font->fontwidth; 856 he = font->fontheight; 857 858 bg = ri->ri_devcmap[(attr >> 16) & 0xf]; 859 fg = ri->ri_devcmap[(attr >> 24) & 0xf]; 860 x = ri->ri_xorigin + col * wi; 861 y = ri->ri_yorigin + row * he; 862 863 if (c == 0x20) { 864 r128fb_rectfill(sc, x, y, wi, he, bg); 865 return; 866 } 867 868 data = WSFONT_GLYPH(c, font); 869 870 r128fb_wait(sc, 8); 871 872 bus_space_write_4(sc->sc_memt, sc->sc_regh, 873 R128_DP_GUI_MASTER_CNTL, 874 R128_GMC_BRUSH_SOLID_COLOR | 875 R128_GMC_SRC_DATATYPE_MONO_FG_BG | 876 R128_ROP3_S | 877 R128_DP_SRC_SOURCE_HOST_DATA | 878 R128_GMC_DST_CLIPPING | 879 sc->sc_master_cntl); 880 881 bus_space_write_4(sc->sc_memt, sc->sc_regh, 882 R128_DP_CNTL, 883 R128_DST_Y_TOP_TO_BOTTOM | 884 R128_DST_X_LEFT_TO_RIGHT); 885 886 bus_space_write_4(sc->sc_memt, sc->sc_regh, 887 R128_DP_SRC_FRGD_CLR, fg); 888 bus_space_write_4(sc->sc_memt, sc->sc_regh, 889 R128_DP_SRC_BKGD_CLR, bg); 890 891 /* 892 * The Rage 128 doesn't have anything to skip pixels 893 * when colour expanding but all coordinates 894 * are signed so we just clip the leading bytes and 895 * trailing bits away 896 */ 897 bus_space_write_4(sc->sc_memt, sc->sc_regh, 898 R128_SC_RIGHT, x + wi - 1); 899 bus_space_write_4(sc->sc_memt, sc->sc_regh, 900 R128_SC_LEFT, x); 901 902 /* needed? */ 903 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_SRC_X_Y, 0); 904 905 offset = 32 - (font->stride << 3); 906 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DST_X_Y, 907 ((x - offset) << 16) | y); 908 bus_space_write_4(sc->sc_memt, sc->sc_regh, 909 R128_DST_WIDTH_HEIGHT, (32 << 16) | he); 910 911 r128fb_wait(sc, he); 912 switch (font->stride) { 913 case 1: { 914 uint8_t *data8 = data; 915 uint32_t reg; 916 for (i = 0; i < he; i++) { 917 reg = *data8; 918 bus_space_write_stream_4(sc->sc_memt, 919 sc->sc_regh, R128_HOST_DATA0, reg); 920 data8++; 921 } 922 break; 923 } 924 case 2: { 925 uint16_t *data16 = data; 926 uint32_t reg; 927 for (i = 0; i < he; i++) { 928 reg = *data16; 929 bus_space_write_stream_4(sc->sc_memt, 930 sc->sc_regh, R128_HOST_DATA0, reg); 931 data16++; 932 } 933 break; 934 } 935 } 936 } 937 938 static void 939 r128fb_putchar_aa(void *cookie, int row, int col, u_int c, long attr) 940 { 941 struct rasops_info *ri = cookie; 942 struct wsdisplay_font *font = PICK_FONT(ri, c); 943 struct vcons_screen *scr = ri->ri_hw; 944 struct r128fb_softc *sc = scr->scr_cookie; 945 uint32_t bg, latch = 0, bg8, fg8, pixel; 946 int i, x, y, wi, he, r, g, b, aval; 947 int r1, g1, b1, r0, g0, b0, fgo, bgo; 948 uint8_t *data8; 949 int rv, cnt = 0; 950 951 if (sc->sc_mode != WSDISPLAYIO_MODE_EMUL) 952 return; 953 954 if (!CHAR_IN_FONT(c, font)) 955 return; 956 957 wi = font->fontwidth; 958 he = font->fontheight; 959 960 bg = ri->ri_devcmap[(attr >> 16) & 0xf]; 961 x = ri->ri_xorigin + col * wi; 962 y = ri->ri_yorigin + row * he; 963 if (c == 0x20) { 964 r128fb_rectfill(sc, x, y, wi, he, bg); 965 return; 966 } 967 968 rv = glyphcache_try(&sc->sc_gc, c, x, y, attr); 969 if (rv == GC_OK) 970 return; 971 972 data8 = WSFONT_GLYPH(c, font); 973 974 r128fb_wait(sc, 5); 975 bus_space_write_4(sc->sc_memt, sc->sc_regh, 976 R128_DP_GUI_MASTER_CNTL, 977 R128_GMC_BRUSH_SOLID_COLOR | 978 R128_GMC_SRC_DATATYPE_COLOR | 979 R128_ROP3_S | 980 R128_DP_SRC_SOURCE_HOST_DATA | 981 sc->sc_master_cntl); 982 983 bus_space_write_4(sc->sc_memt, sc->sc_regh, 984 R128_DP_CNTL, 985 R128_DST_Y_TOP_TO_BOTTOM | 986 R128_DST_X_LEFT_TO_RIGHT); 987 988 /* needed? */ 989 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_SRC_X_Y, 0); 990 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DST_X_Y, 991 (x << 16) | y); 992 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_DST_WIDTH_HEIGHT, 993 (wi << 16) | he); 994 995 /* 996 * we need the RGB colours here, so get offsets into rasops_cmap 997 */ 998 fgo = ((attr >> 24) & 0xf) * 3; 999 bgo = ((attr >> 16) & 0xf) * 3; 1000 1001 r0 = rasops_cmap[bgo]; 1002 r1 = rasops_cmap[fgo]; 1003 g0 = rasops_cmap[bgo + 1]; 1004 g1 = rasops_cmap[fgo + 1]; 1005 b0 = rasops_cmap[bgo + 2]; 1006 b1 = rasops_cmap[fgo + 2]; 1007 #define R3G3B2(r, g, b) ((r & 0xe0) | ((g >> 3) & 0x1c) | (b >> 6)) 1008 bg8 = R3G3B2(r0, g0, b0); 1009 fg8 = R3G3B2(r1, g1, b1); 1010 1011 r128fb_wait(sc, 16); 1012 1013 for (i = 0; i < ri->ri_fontscale; i++) { 1014 aval = *data8; 1015 if (aval == 0) { 1016 pixel = bg8; 1017 } else if (aval == 255) { 1018 pixel = fg8; 1019 } else { 1020 r = aval * r1 + (255 - aval) * r0; 1021 g = aval * g1 + (255 - aval) * g0; 1022 b = aval * b1 + (255 - aval) * b0; 1023 pixel = ((r & 0xe000) >> 8) | 1024 ((g & 0xe000) >> 11) | 1025 ((b & 0xc000) >> 14); 1026 } 1027 latch = (latch << 8) | pixel; 1028 /* write in 32bit chunks */ 1029 if ((i & 3) == 3) { 1030 bus_space_write_stream_4(sc->sc_memt, sc->sc_regh, 1031 R128_HOST_DATA0, latch); 1032 /* 1033 * not strictly necessary, old data should be shifted 1034 * out 1035 */ 1036 latch = 0; 1037 cnt++; 1038 if (cnt > 15) { 1039 r128fb_wait(sc, 16); 1040 cnt = 0; 1041 } 1042 } 1043 data8++; 1044 } 1045 /* if we have pixels left in latch write them out */ 1046 if ((i & 3) != 0) { 1047 latch = latch << ((4 - (i & 3)) << 3); 1048 bus_space_write_stream_4(sc->sc_memt, sc->sc_regh, 1049 R128_HOST_DATA0, latch); 1050 } 1051 if (rv == GC_ADD) { 1052 glyphcache_add(&sc->sc_gc, c, x, y); 1053 } 1054 } 1055 1056 static void 1057 r128fb_copycols(void *cookie, int row, int srccol, int dstcol, int ncols) 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 xs, xd, y, width, height; 1063 1064 if ((sc->sc_locked == 0) && (sc->sc_mode == WSDISPLAYIO_MODE_EMUL)) { 1065 xs = ri->ri_xorigin + ri->ri_font->fontwidth * srccol; 1066 xd = ri->ri_xorigin + ri->ri_font->fontwidth * dstcol; 1067 y = ri->ri_yorigin + ri->ri_font->fontheight * row; 1068 width = ri->ri_font->fontwidth * ncols; 1069 height = ri->ri_font->fontheight; 1070 r128fb_bitblt(sc, xs, y, xd, y, width, height, R128_ROP3_S); 1071 } 1072 } 1073 1074 static void 1075 r128fb_erasecols(void *cookie, int row, int startcol, int ncols, long fillattr) 1076 { 1077 struct rasops_info *ri = cookie; 1078 struct vcons_screen *scr = ri->ri_hw; 1079 struct r128fb_softc *sc = scr->scr_cookie; 1080 int32_t x, y, width, height, fg, bg, ul; 1081 1082 if ((sc->sc_locked == 0) && (sc->sc_mode == WSDISPLAYIO_MODE_EMUL)) { 1083 x = ri->ri_xorigin + ri->ri_font->fontwidth * startcol; 1084 y = ri->ri_yorigin + ri->ri_font->fontheight * row; 1085 width = ri->ri_font->fontwidth * ncols; 1086 height = ri->ri_font->fontheight; 1087 rasops_unpack_attr(fillattr, &fg, &bg, &ul); 1088 1089 r128fb_rectfill(sc, x, y, width, height, ri->ri_devcmap[bg]); 1090 } 1091 } 1092 1093 static void 1094 r128fb_copyrows(void *cookie, int srcrow, int dstrow, int nrows) 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, ys, yd, width, height; 1100 1101 if ((sc->sc_locked == 0) && (sc->sc_mode == WSDISPLAYIO_MODE_EMUL)) { 1102 x = ri->ri_xorigin; 1103 ys = ri->ri_yorigin + ri->ri_font->fontheight * srcrow; 1104 yd = ri->ri_yorigin + ri->ri_font->fontheight * dstrow; 1105 width = ri->ri_emuwidth; 1106 height = ri->ri_font->fontheight * nrows; 1107 r128fb_bitblt(sc, x, ys, x, yd, width, height, R128_ROP3_S); 1108 } 1109 } 1110 1111 static void 1112 r128fb_eraserows(void *cookie, int row, int nrows, long fillattr) 1113 { 1114 struct rasops_info *ri = cookie; 1115 struct vcons_screen *scr = ri->ri_hw; 1116 struct r128fb_softc *sc = scr->scr_cookie; 1117 int32_t x, y, width, height, fg, bg, ul; 1118 1119 if ((sc->sc_locked == 0) && (sc->sc_mode == WSDISPLAYIO_MODE_EMUL)) { 1120 x = ri->ri_xorigin; 1121 y = ri->ri_yorigin + ri->ri_font->fontheight * row; 1122 width = ri->ri_emuwidth; 1123 height = ri->ri_font->fontheight * nrows; 1124 rasops_unpack_attr(fillattr, &fg, &bg, &ul); 1125 1126 r128fb_rectfill(sc, x, y, width, height, ri->ri_devcmap[bg]); 1127 } 1128 } 1129 1130 static void 1131 r128fb_set_backlight(struct r128fb_softc *sc, int level) 1132 { 1133 uint32_t reg; 1134 1135 /* 1136 * should we do nothing when backlight is off, should we just store the 1137 * level and use it when turning back on or should we just flip sc_bl_on 1138 * and turn the backlight on? 1139 * For now turn it on so a crashed screensaver can't get the user stuck 1140 * with a dark screen as long as hotkeys work 1141 */ 1142 if (level > 255) level = 255; 1143 if (level < 0) level = 0; 1144 if (level == sc->sc_bl_level) 1145 return; 1146 sc->sc_bl_level = level; 1147 if (sc->sc_bl_on == 0) 1148 sc->sc_bl_on = 1; 1149 level = 255 - level; 1150 reg = bus_space_read_4(sc->sc_memt, sc->sc_regh, R128_LVDS_GEN_CNTL); 1151 reg &= ~R128_LEVEL_MASK; 1152 reg |= (level << R128_LEVEL_SHIFT); 1153 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_LVDS_GEN_CNTL, reg); 1154 DPRINTF("backlight level: %d reg %08x\n", level, reg); 1155 } 1156 1157 static void 1158 r128fb_switch_backlight(struct r128fb_softc *sc, int on) 1159 { 1160 uint32_t reg; 1161 int level; 1162 1163 if (on == sc->sc_bl_on) 1164 return; 1165 sc->sc_bl_on = on; 1166 reg = bus_space_read_4(sc->sc_memt, sc->sc_regh, R128_LVDS_GEN_CNTL); 1167 reg &= ~R128_LEVEL_MASK; 1168 level = on ? 255 - sc->sc_bl_level : 255; 1169 reg |= level << R128_LEVEL_SHIFT; 1170 bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_LVDS_GEN_CNTL, reg); 1171 DPRINTF("backlight state: %d reg %08x\n", on, reg); 1172 } 1173 1174 1175 static void 1176 r128fb_brightness_up(device_t dev) 1177 { 1178 struct r128fb_softc *sc = device_private(dev); 1179 1180 r128fb_set_backlight(sc, sc->sc_bl_level + 8); 1181 } 1182 1183 static void 1184 r128fb_brightness_down(device_t dev) 1185 { 1186 struct r128fb_softc *sc = device_private(dev); 1187 1188 r128fb_set_backlight(sc, sc->sc_bl_level - 8); 1189 } 1190
Indexes created Mon Sep 29 03:10:08 GMT 2025