sys/arm/ti/am335x/am335x_lcd_syscons.c

   1 /*-
   2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
   3  *
   4  * Copyright (c) 2013 Oleksandr Tymoshenko <gonzo@freebsd.org>
   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 AND CONTRIBUTORS ``AS IS'' AND
  17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26  * SUCH DAMAGE.
  27  */
  28 #include <sys/cdefs.h>
  29 __FBSDID("$FreeBSD$");
  30
  31 #include <sys/param.h>
  32 #include <sys/systm.h>
  33 #include <sys/bus.h>
  34 #include <sys/conf.h>
  35 #include <sys/endian.h>
  36 #include <sys/kernel.h>
  37 #include <sys/lock.h>
  38 #include <sys/malloc.h>
  39 #include <sys/module.h>
  40 #include <sys/mutex.h>
  41 #include <sys/resource.h>
  42 #include <sys/rman.h>
  43 #include <sys/fbio.h>
  44 #include <sys/consio.h>
  45
  46 #include <sys/kdb.h>
  47
  48 #include <machine/bus.h>
  49 #include <machine/resource.h>
  50 #include <machine/intr.h>
  51
  52 #include <dev/ofw/ofw_bus.h>
  53 #include <dev/ofw/ofw_bus_subr.h>
  54
  55 #include <dev/fb/fbreg.h>
  56 #include <dev/syscons/syscons.h>
  57
  58 #include "am335x_lcd.h"
  59
  60 struct video_adapter_softc {
  61         /* Videoadpater part */
  62         video_adapter_t va;
  63         int             console;
  64
  65         intptr_t        fb_addr;
  66         intptr_t        fb_paddr;
  67         unsigned int    fb_size;
  68
  69         unsigned int    height;
  70         unsigned int    width;
  71         unsigned int    depth;
  72         unsigned int    stride;
  73
  74         unsigned int    xmargin;
  75         unsigned int    ymargin;
  76
  77         unsigned char   *font;
  78         int             initialized;
  79 };
  80
  81 struct argb {
  82         uint8_t         a;
  83         uint8_t         r;
  84         uint8_t         g;
  85         uint8_t         b;
  86 };
  87
  88 static struct argb am335x_syscons_palette[16] = {
  89         {0x00, 0x00, 0x00, 0x00},
  90         {0x00, 0x00, 0x00, 0xaa},
  91         {0x00, 0x00, 0xaa, 0x00},
  92         {0x00, 0x00, 0xaa, 0xaa},
  93         {0x00, 0xaa, 0x00, 0x00},
  94         {0x00, 0xaa, 0x00, 0xaa},
  95         {0x00, 0xaa, 0x55, 0x00},
  96         {0x00, 0xaa, 0xaa, 0xaa},
  97         {0x00, 0x55, 0x55, 0x55},
  98         {0x00, 0x55, 0x55, 0xff},
  99         {0x00, 0x55, 0xff, 0x55},
 100         {0x00, 0x55, 0xff, 0xff},
 101         {0x00, 0xff, 0x55, 0x55},
 102         {0x00, 0xff, 0x55, 0xff},
 103         {0x00, 0xff, 0xff, 0x55},
 104         {0x00, 0xff, 0xff, 0xff}
 105 };
 106
 107 /* mouse pointer from dev/syscons/scgfbrndr.c */
 108 static u_char mouse_pointer[16] = {
 109         0x00, 0x40, 0x60, 0x70, 0x78, 0x7c, 0x7e, 0x68,
 110         0x0c, 0x0c, 0x06, 0x06, 0x00, 0x00, 0x00, 0x00
 111 };
 112
 113 #define AM335X_FONT_HEIGHT      16
 114
 115 #define FB_WIDTH                640
 116 #define FB_HEIGHT               480
 117 #define FB_DEPTH                24
 118
 119 static struct video_adapter_softc va_softc;
 120
 121 static int am335x_syscons_configure(int flags);
 122
 123 /*
 124  * Video driver routines and glue.
 125  */
 126 static vi_probe_t               am335x_syscons_probe;
 127 static vi_init_t                am335x_syscons_init;
 128 static vi_get_info_t            am335x_syscons_get_info;
 129 static vi_query_mode_t          am335x_syscons_query_mode;
 130 static vi_set_mode_t            am335x_syscons_set_mode;
 131 static vi_save_font_t           am335x_syscons_save_font;
 132 static vi_load_font_t           am335x_syscons_load_font;
 133 static vi_show_font_t           am335x_syscons_show_font;
 134 static vi_save_palette_t        am335x_syscons_save_palette;
 135 static vi_load_palette_t        am335x_syscons_load_palette;
 136 static vi_set_border_t          am335x_syscons_set_border;
 137 static vi_save_state_t          am335x_syscons_save_state;
 138 static vi_load_state_t          am335x_syscons_load_state;
 139 static vi_set_win_org_t         am335x_syscons_set_win_org;
 140 static vi_read_hw_cursor_t      am335x_syscons_read_hw_cursor;
 141 static vi_set_hw_cursor_t       am335x_syscons_set_hw_cursor;
 142 static vi_set_hw_cursor_shape_t am335x_syscons_set_hw_cursor_shape;
 143 static vi_blank_display_t       am335x_syscons_blank_display;
 144 static vi_mmap_t                am335x_syscons_mmap;
 145 static vi_ioctl_t               am335x_syscons_ioctl;
 146 static vi_clear_t               am335x_syscons_clear;
 147 static vi_fill_rect_t           am335x_syscons_fill_rect;
 148 static vi_bitblt_t              am335x_syscons_bitblt;
 149 static vi_diag_t                am335x_syscons_diag;
 150 static vi_save_cursor_palette_t am335x_syscons_save_cursor_palette;
 151 static vi_load_cursor_palette_t am335x_syscons_load_cursor_palette;
 152 static vi_copy_t                am335x_syscons_copy;
 153 static vi_putp_t                am335x_syscons_putp;
 154 static vi_putc_t                am335x_syscons_putc;
 155 static vi_puts_t                am335x_syscons_puts;
 156 static vi_putm_t                am335x_syscons_putm;
 157
 158 static video_switch_t am335x_sysconsvidsw = {
 159         .probe                  = am335x_syscons_probe,
 160         .init                   = am335x_syscons_init,
 161         .get_info               = am335x_syscons_get_info,
 162         .query_mode             = am335x_syscons_query_mode,
 163         .set_mode               = am335x_syscons_set_mode,
 164         .save_font              = am335x_syscons_save_font,
 165         .load_font              = am335x_syscons_load_font,
 166         .show_font              = am335x_syscons_show_font,
 167         .save_palette           = am335x_syscons_save_palette,
 168         .load_palette           = am335x_syscons_load_palette,
 169         .set_border             = am335x_syscons_set_border,
 170         .save_state             = am335x_syscons_save_state,
 171         .load_state             = am335x_syscons_load_state,
 172         .set_win_org            = am335x_syscons_set_win_org,
 173         .read_hw_cursor         = am335x_syscons_read_hw_cursor,
 174         .set_hw_cursor          = am335x_syscons_set_hw_cursor,
 175         .set_hw_cursor_shape    = am335x_syscons_set_hw_cursor_shape,
 176         .blank_display          = am335x_syscons_blank_display,
 177         .mmap                   = am335x_syscons_mmap,
 178         .ioctl                  = am335x_syscons_ioctl,
 179         .clear                  = am335x_syscons_clear,
 180         .fill_rect              = am335x_syscons_fill_rect,
 181         .bitblt                 = am335x_syscons_bitblt,
 182         .diag                   = am335x_syscons_diag,
 183         .save_cursor_palette    = am335x_syscons_save_cursor_palette,
 184         .load_cursor_palette    = am335x_syscons_load_cursor_palette,
 185         .copy                   = am335x_syscons_copy,
 186         .putp                   = am335x_syscons_putp,
 187         .putc                   = am335x_syscons_putc,
 188         .puts                   = am335x_syscons_puts,
 189         .putm                   = am335x_syscons_putm,
 190 };
 191
 192 VIDEO_DRIVER(am335x_syscons, am335x_sysconsvidsw, am335x_syscons_configure);
 193
 194 static vr_init_t am335x_rend_init;
 195 static vr_clear_t am335x_rend_clear;
 196 static vr_draw_border_t am335x_rend_draw_border;
 197 static vr_draw_t am335x_rend_draw;
 198 static vr_set_cursor_t am335x_rend_set_cursor;
 199 static vr_draw_cursor_t am335x_rend_draw_cursor;
 200 static vr_blink_cursor_t am335x_rend_blink_cursor;
 201 static vr_set_mouse_t am335x_rend_set_mouse;
 202 static vr_draw_mouse_t am335x_rend_draw_mouse;
 203
 204 /*
 205  * We use our own renderer; this is because we must emulate a hardware
 206  * cursor.
 207  */
 208 static sc_rndr_sw_t am335x_rend = {
 209         am335x_rend_init,
 210         am335x_rend_clear,
 211         am335x_rend_draw_border,
 212         am335x_rend_draw,
 213         am335x_rend_set_cursor,
 214         am335x_rend_draw_cursor,
 215         am335x_rend_blink_cursor,
 216         am335x_rend_set_mouse,
 217         am335x_rend_draw_mouse
 218 };
 219
 220 RENDERER(am335x_syscons, 0, am335x_rend, gfb_set);
 221 RENDERER_MODULE(am335x_syscons, gfb_set);
 222
 223 static void
 224 am335x_rend_init(scr_stat* scp)
 225 {
 226 }
 227
 228 static void
 229 am335x_rend_clear(scr_stat* scp, int c, int attr)
 230 {
 231 }
 232
 233 static void
 234 am335x_rend_draw_border(scr_stat* scp, int color)
 235 {
 236 }
 237
 238 static void
 239 am335x_rend_draw(scr_stat* scp, int from, int count, int flip)
 240 {
 241         video_adapter_t* adp = scp->sc->adp;
 242         int i, c, a;
 243
 244         if (!flip) {
 245                 /* Normal printing */
 246                 vidd_puts(adp, from, (uint16_t*)sc_vtb_pointer(&scp->vtb, from), count);
 247         } else {
 248                 /* This is for selections and such: invert the color attribute */
 249                 for (i = count; i-- > 0; ++from) {
 250                         c = sc_vtb_getc(&scp->vtb, from);
 251                         a = sc_vtb_geta(&scp->vtb, from) >> 8;
 252                         vidd_putc(adp, from, c, (a >> 4) | ((a & 0xf) << 4));
 253                 }
 254         }
 255 }
 256
 257 static void
 258 am335x_rend_set_cursor(scr_stat* scp, int base, int height, int blink)
 259 {
 260 }
 261
 262 static void
 263 am335x_rend_draw_cursor(scr_stat* scp, int off, int blink, int on, int flip)
 264 {
 265         video_adapter_t* adp = scp->sc->adp;
 266         struct video_adapter_softc *sc;
 267         int row, col;
 268         uint8_t *addr;
 269         int i, j, bytes;
 270
 271         sc = (struct video_adapter_softc *)adp;
 272
 273         if (scp->curs_attr.height <= 0)
 274                 return;
 275
 276         if (sc->fb_addr == 0)
 277                 return;
 278
 279         if (off >= adp->va_info.vi_width * adp->va_info.vi_height)
 280                 return;
 281
 282         /* calculate the coordinates in the video buffer */
 283         row = (off / adp->va_info.vi_width) * adp->va_info.vi_cheight;
 284         col = (off % adp->va_info.vi_width) * adp->va_info.vi_cwidth;
 285
 286         addr = (uint8_t *)sc->fb_addr
 287             + (row + sc->ymargin)*(sc->stride)
 288             + (sc->depth/8) * (col + sc->xmargin);
 289
 290         bytes = sc->depth/8;
 291
 292         /* our cursor consists of simply inverting the char under it */
 293         for (i = 0; i < adp->va_info.vi_cheight; i++) {
 294                 for (j = 0; j < adp->va_info.vi_cwidth; j++) {
 295                         switch (sc->depth) {
 296                         case 32:
 297                         case 24:
 298                                 addr[bytes*j + 2] ^= 0xff;
 299                                 /* FALLTHROUGH */
 300                         case 16:
 301                                 addr[bytes*j + 1] ^= 0xff;
 302                                 addr[bytes*j] ^= 0xff;
 303                                 break;
 304                         default:
 305                                 break;
 306                         }
 307                 }
 308
 309                 addr += sc->stride;
 310         }
 311 }
 312
 313 static void
 314 am335x_rend_blink_cursor(scr_stat* scp, int at, int flip)
 315 {
 316 }
 317
 318 static void
 319 am335x_rend_set_mouse(scr_stat* scp)
 320 {
 321 }
 322
 323 static void
 324 am335x_rend_draw_mouse(scr_stat* scp, int x, int y, int on)
 325 {
 326         vidd_putm(scp->sc->adp, x, y, mouse_pointer, 0xffffffff, 16, 8);
 327 }
 328
 329 static uint16_t am335x_syscons_static_window[ROW*COL];
 330 extern u_char dflt_font_16[];
 331
 332 /*
 333  * Update videoadapter settings after changing resolution
 334  */
 335 static void
 336 am335x_syscons_update_margins(video_adapter_t *adp)
 337 {
 338         struct video_adapter_softc *sc;
 339         video_info_t *vi;
 340
 341         sc = (struct video_adapter_softc *)adp;
 342         vi = &adp->va_info;
 343
 344         sc->xmargin = (sc->width - (vi->vi_width * vi->vi_cwidth)) / 2;
 345         sc->ymargin = (sc->height - (vi->vi_height * vi->vi_cheight))/2;
 346 }
 347
 348 static phandle_t
 349 am335x_syscons_find_panel_node(phandle_t start)
 350 {
 351         phandle_t child;
 352         phandle_t result;
 353
 354         for (child = OF_child(start); child != 0; child = OF_peer(child)) {
 355                 if (ofw_bus_node_is_compatible(child, "ti,am335x-lcd"))
 356                         return (child);
 357                 if ((result = am335x_syscons_find_panel_node(child)))
 358                         return (result);
 359         }
 360
 361         return (0);
 362 }
 363
 364 static int
 365 am335x_syscons_configure(int flags)
 366 {
 367         struct video_adapter_softc *va_sc;
 368
 369         va_sc = &va_softc;
 370         phandle_t display, root;
 371         pcell_t cell;
 372
 373         if (va_sc->initialized)
 374                 return (0);
 375
 376         va_sc->width = 0;
 377         va_sc->height = 0;
 378
 379         /*
 380          * It seems there is no way to let syscons framework know
 381          * that framebuffer resolution has changed. So just try
 382          * to fetch data from FDT and go with defaults if failed
 383          */
 384         root = OF_finddevice("/");
 385         if ((root != -1) &&
 386             (display = am335x_syscons_find_panel_node(root))) {
 387                 if ((OF_getencprop(display, "panel_width", &cell,
 388                     sizeof(cell))) > 0)
 389                         va_sc->width = cell;
 390
 391                 if ((OF_getencprop(display, "panel_height", &cell,
 392                     sizeof(cell))) > 0)
 393                         va_sc->height = cell;
 394         }
 395
 396         if (va_sc->width == 0)
 397                 va_sc->width = FB_WIDTH;
 398         if (va_sc->height == 0)
 399                 va_sc->height = FB_HEIGHT;
 400
 401         am335x_syscons_init(0, &va_sc->va, 0);
 402
 403         va_sc->initialized = 1;
 404
 405         return (0);
 406 }
 407
 408 static int
 409 am335x_syscons_probe(int unit, video_adapter_t **adp, void *arg, int flags)
 410 {
 411
 412         return (0);
 413 }
 414
 415 static int
 416 am335x_syscons_init(int unit, video_adapter_t *adp, int flags)
 417 {
 418         struct video_adapter_softc *sc;
 419         video_info_t *vi;
 420
 421         sc = (struct video_adapter_softc *)adp;
 422         vi = &adp->va_info;
 423
 424         vid_init_struct(adp, "am335x_syscons", -1, unit);
 425
 426         sc->font = dflt_font_16;
 427         vi->vi_cheight = AM335X_FONT_HEIGHT;
 428         vi->vi_cwidth = 8;
 429
 430         vi->vi_width = sc->width/8;
 431         vi->vi_height = sc->height/vi->vi_cheight;
 432
 433         /*
 434          * Clamp width/height to syscons maximums
 435          */
 436         if (vi->vi_width > COL)
 437                 vi->vi_width = COL;
 438         if (vi->vi_height > ROW)
 439                 vi->vi_height = ROW;
 440
 441         sc->xmargin = (sc->width - (vi->vi_width * vi->vi_cwidth)) / 2;
 442         sc->ymargin = (sc->height - (vi->vi_height * vi->vi_cheight))/2;
 443
 444
 445         adp->va_window = (vm_offset_t) am335x_syscons_static_window;
 446         adp->va_flags |= V_ADP_FONT /* | V_ADP_COLOR | V_ADP_MODECHANGE */;
 447
 448         vid_register(&sc->va);
 449
 450         return (0);
 451 }
 452
 453 static int
 454 am335x_syscons_get_info(video_adapter_t *adp, int mode, video_info_t *info)
 455 {
 456         bcopy(&adp->va_info, info, sizeof(*info));
 457         return (0);
 458 }
 459
 460 static int
 461 am335x_syscons_query_mode(video_adapter_t *adp, video_info_t *info)
 462 {
 463         return (0);
 464 }
 465
 466 static int
 467 am335x_syscons_set_mode(video_adapter_t *adp, int mode)
 468 {
 469         return (0);
 470 }
 471
 472 static int
 473 am335x_syscons_save_font(video_adapter_t *adp, int page, int size, int width,
 474     u_char *data, int c, int count)
 475 {
 476         return (0);
 477 }
 478
 479 static int
 480 am335x_syscons_load_font(video_adapter_t *adp, int page, int size, int width,
 481     u_char *data, int c, int count)
 482 {
 483         struct video_adapter_softc *sc = (struct video_adapter_softc *)adp;
 484
 485         sc->font = data;
 486
 487         return (0);
 488 }
 489
 490 static int
 491 am335x_syscons_show_font(video_adapter_t *adp, int page)
 492 {
 493         return (0);
 494 }
 495
 496 static int
 497 am335x_syscons_save_palette(video_adapter_t *adp, u_char *palette)
 498 {
 499         return (0);
 500 }
 501
 502 static int
 503 am335x_syscons_load_palette(video_adapter_t *adp, u_char *palette)
 504 {
 505         return (0);
 506 }
 507
 508 static int
 509 am335x_syscons_set_border(video_adapter_t *adp, int border)
 510 {
 511         return (am335x_syscons_blank_display(adp, border));
 512 }
 513
 514 static int
 515 am335x_syscons_save_state(video_adapter_t *adp, void *p, size_t size)
 516 {
 517         return (0);
 518 }
 519
 520 static int
 521 am335x_syscons_load_state(video_adapter_t *adp, void *p)
 522 {
 523         return (0);
 524 }
 525
 526 static int
 527 am335x_syscons_set_win_org(video_adapter_t *adp, off_t offset)
 528 {
 529         return (0);
 530 }
 531
 532 static int
 533 am335x_syscons_read_hw_cursor(video_adapter_t *adp, int *col, int *row)
 534 {
 535         *col = *row = 0;
 536
 537         return (0);
 538 }
 539
 540 static int
 541 am335x_syscons_set_hw_cursor(video_adapter_t *adp, int col, int row)
 542 {
 543         return (0);
 544 }
 545
 546 static int
 547 am335x_syscons_set_hw_cursor_shape(video_adapter_t *adp, int base, int height,
 548     int celsize, int blink)
 549 {
 550         return (0);
 551 }
 552
 553 static int
 554 am335x_syscons_blank_display(video_adapter_t *adp, int mode)
 555 {
 556
 557         struct video_adapter_softc *sc;
 558
 559         sc = (struct video_adapter_softc *)adp;
 560         if (sc && sc->fb_addr)
 561                 memset((void*)sc->fb_addr, 0, sc->fb_size);
 562
 563         return (0);
 564 }
 565
 566 static int
 567 am335x_syscons_mmap(video_adapter_t *adp, vm_ooffset_t offset, vm_paddr_t *paddr,
 568     int prot, vm_memattr_t *memattr)
 569 {
 570         struct video_adapter_softc *sc;
 571
 572         sc = (struct video_adapter_softc *)adp;
 573
 574         /*
 575          * This might be a legacy VGA mem request: if so, just point it at the
 576          * framebuffer, since it shouldn't be touched
 577          */
 578         if (offset < sc->stride*sc->height) {
 579                 *paddr = sc->fb_paddr + offset;
 580                 return (0);
 581         }
 582
 583         return (EINVAL);
 584 }
 585
 586 static int
 587 am335x_syscons_ioctl(video_adapter_t *adp, u_long cmd, caddr_t data)
 588 {
 589         struct video_adapter_softc *sc;
 590         struct fbtype *fb;
 591
 592         sc = (struct video_adapter_softc *)adp;
 593
 594         switch (cmd) {
 595         case FBIOGTYPE:
 596                 fb = (struct fbtype *)data;
 597                 fb->fb_type = FBTYPE_PCIMISC;
 598                 fb->fb_height = sc->height;
 599                 fb->fb_width = sc->width;
 600                 fb->fb_depth = sc->depth;
 601                 if (sc->depth <= 1 || sc->depth > 8)
 602                         fb->fb_cmsize = 0;
 603                 else
 604                         fb->fb_cmsize = 1 << sc->depth;
 605                 fb->fb_size = sc->fb_size;
 606                 break;
 607         default:
 608                 return (fb_commonioctl(adp, cmd, data));
 609         }
 610
 611         return (0);
 612 }
 613
 614 static int
 615 am335x_syscons_clear(video_adapter_t *adp)
 616 {
 617
 618         return (am335x_syscons_blank_display(adp, 0));
 619 }
 620
 621 static int
 622 am335x_syscons_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
 623 {
 624
 625         return (0);
 626 }
 627
 628 static int
 629 am335x_syscons_bitblt(video_adapter_t *adp, ...)
 630 {
 631
 632         return (0);
 633 }
 634
 635 static int
 636 am335x_syscons_diag(video_adapter_t *adp, int level)
 637 {
 638
 639         return (0);
 640 }
 641
 642 static int
 643 am335x_syscons_save_cursor_palette(video_adapter_t *adp, u_char *palette)
 644 {
 645
 646         return (0);
 647 }
 648
 649 static int
 650 am335x_syscons_load_cursor_palette(video_adapter_t *adp, u_char *palette)
 651 {
 652
 653         return (0);
 654 }
 655
 656 static int
 657 am335x_syscons_copy(video_adapter_t *adp, vm_offset_t src, vm_offset_t dst, int n)
 658 {
 659
 660         return (0);
 661 }
 662
 663 static int
 664 am335x_syscons_putp(video_adapter_t *adp, vm_offset_t off, uint32_t p, uint32_t a,
 665     int size, int bpp, int bit_ltor, int byte_ltor)
 666 {
 667
 668         return (0);
 669 }
 670
 671 static int
 672 am335x_syscons_putc(video_adapter_t *adp, vm_offset_t off, uint8_t c, uint8_t a)
 673 {
 674         struct video_adapter_softc *sc;
 675         int row;
 676         int col;
 677         int i, j, k;
 678         uint8_t *addr;
 679         u_char *p;
 680         uint8_t fg, bg, color;
 681         uint16_t rgb;
 682
 683         sc = (struct video_adapter_softc *)adp;
 684
 685         if (sc->fb_addr == 0)
 686                 return (0);
 687
 688         row = (off / adp->va_info.vi_width) * adp->va_info.vi_cheight;
 689         col = (off % adp->va_info.vi_width) * adp->va_info.vi_cwidth;
 690         p = sc->font + c*AM335X_FONT_HEIGHT;
 691         addr = (uint8_t *)sc->fb_addr
 692             + (row + sc->ymargin)*(sc->stride)
 693             + (sc->depth/8) * (col + sc->xmargin);
 694
 695         fg = a & 0xf ;
 696         bg = (a >> 4) & 0xf;
 697
 698         for (i = 0; i < AM335X_FONT_HEIGHT; i++) {
 699                 for (j = 0, k = 7; j < 8; j++, k--) {
 700                         if ((p[i] & (1 << k)) == 0)
 701                                 color = bg;
 702                         else
 703                                 color = fg;
 704
 705                         switch (sc->depth) {
 706                         case 32:
 707                                 addr[4*j+0] = am335x_syscons_palette[color].r;
 708                                 addr[4*j+1] = am335x_syscons_palette[color].g;
 709                                 addr[4*j+2] = am335x_syscons_palette[color].b;
 710                                 addr[4*j+3] = am335x_syscons_palette[color].a;
 711                                 break;
 712                         case 24:
 713                                 addr[3*j] = am335x_syscons_palette[color].r;
 714                                 addr[3*j+1] = am335x_syscons_palette[color].g;
 715                                 addr[3*j+2] = am335x_syscons_palette[color].b;
 716                                 break;
 717                         case 16:
 718                                 rgb = (am335x_syscons_palette[color].r >> 3) << 11;
 719                                 rgb |= (am335x_syscons_palette[color].g >> 2) << 5;
 720                                 rgb |= (am335x_syscons_palette[color].b >> 3);
 721                                 addr[2*j] = rgb & 0xff;
 722                                 addr[2*j + 1] = (rgb >> 8) & 0xff;
 723                         default:
 724                                 /* Not supported yet */
 725                                 break;
 726                         }
 727                 }
 728
 729                 addr += (sc->stride);
 730         }
 731
 732         return (0);
 733 }
 734
 735 static int
 736 am335x_syscons_puts(video_adapter_t *adp, vm_offset_t off, u_int16_t *s, int len)
 737 {
 738         int i;
 739
 740         for (i = 0; i < len; i++)
 741                 am335x_syscons_putc(adp, off + i, s[i] & 0xff, (s[i] & 0xff00) >> 8);
 742
 743         return (0);
 744 }
 745
 746 static int
 747 am335x_syscons_putm(video_adapter_t *adp, int x, int y, uint8_t *pixel_image,
 748     uint32_t pixel_mask, int size, int width)
 749 {
 750
 751         return (0);
 752 }
 753
 754 /* Initialization function */
 755 int am335x_lcd_syscons_setup(vm_offset_t vaddr, vm_paddr_t paddr,
 756     struct panel_info *panel)
 757 {
 758         struct video_adapter_softc *va_sc = &va_softc;
 759
 760         va_sc->fb_addr = vaddr;
 761         va_sc->fb_paddr = paddr;
 762         va_sc->depth = panel->bpp;
 763         va_sc->stride = panel->bpp*panel->panel_width/8;
 764
 765         va_sc->width = panel->panel_width;
 766         va_sc->height = panel->panel_height;
 767         va_sc->fb_size = va_sc->width * va_sc->height
 768             * va_sc->depth/8;
 769         am335x_syscons_update_margins(&va_sc->va);
 770
 771         return (0);
 772 }