zlcd.c revision 1.11
1 /* $NetBSD: zlcd.c,v 1.11 2010/02/24 22:37:56 dyoung Exp $ */ 2 /* $OpenBSD: zaurus_lcd.c,v 1.20 2006/06/02 20:50:14 miod Exp $ */ 3 /* NetBSD: lubbock_lcd.c,v 1.1 2003/08/09 19:38:53 bsh Exp */ 4 5 /* 6 * Copyright (c) 2002, 2003 Genetec Corporation. All rights reserved. 7 * Written by Hiroyuki Bessho for Genetec Corporation. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. The name of Genetec Corporation may not be used to endorse or 18 * promote products derived from this software without specific prior 19 * written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY GENETEC CORPORATION ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GENETEC CORPORATION 25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * LCD driver for Sharp Zaurus (based on the Intel Lubbock driver). 36 * 37 * Controlling LCD is almost completely done through PXA2X0's 38 * integrated LCD controller. Codes for it is arm/xscale/pxa2x0_lcd.c. 39 * 40 * Codes in this file provide platform specific things including: 41 * LCD on/off switch and backlight brightness 42 * LCD panel geometry 43 */ 44 45 #include <sys/cdefs.h> 46 __KERNEL_RCSID(0, "$NetBSD: zlcd.c,v 1.11 2010/02/24 22:37:56 dyoung Exp $"); 47 48 #include <sys/param.h> 49 #include <sys/systm.h> 50 #include <sys/conf.h> 51 #include <sys/uio.h> 52 #include <sys/malloc.h> 53 54 #include <dev/cons.h> 55 #include <dev/wscons/wsconsio.h> 56 #include <dev/wscons/wsdisplayvar.h> 57 #include <dev/wscons/wscons_callbacks.h> 58 59 #include <dev/hpc/hpcfbio.h> 60 61 #include <machine/bus.h> 62 #include <arm/xscale/pxa2x0var.h> 63 #include <arm/xscale/pxa2x0reg.h> 64 #include <arm/xscale/pxa2x0_lcd.h> 65 66 #include <zaurus/dev/scoopvar.h> 67 #include <zaurus/dev/zsspvar.h> 68 #include <zaurus/zaurus/zaurus_var.h> 69 70 /* 71 * wsdisplay glue 72 */ 73 static struct pxa2x0_wsscreen_descr lcd_std_screen = { 74 .c = { 75 .name = "std", 76 .textops = &pxa2x0_lcd_emulops, 77 .fontwidth = 8, 78 .fontheight = 16, 79 .capabilities = WSSCREEN_WSCOLORS, 80 }, 81 .depth = 16, /* bits per pixel */ 82 .flags = RI_ROTATE_CW, /* quarter clockwise rotation */ 83 }; 84 85 static const struct wsscreen_descr *lcd_scr_descr[] = { 86 &lcd_std_screen.c 87 }; 88 89 static const struct wsscreen_list lcd_screen_list = { 90 .nscreens = __arraycount(lcd_scr_descr), 91 .screens = lcd_scr_descr, 92 }; 93 94 static int lcd_ioctl(void *, void *, u_long, void *, int, struct lwp *); 95 static int lcd_param(struct pxa2x0_lcd_softc *, u_long, 96 struct wsdisplay_param *); 97 static int lcd_show_screen(void *, void *, int, 98 void (*)(void *, int, int), void *); 99 100 struct wsdisplay_accessops lcd_accessops = { 101 lcd_ioctl, 102 pxa2x0_lcd_mmap, 103 pxa2x0_lcd_alloc_screen, 104 pxa2x0_lcd_free_screen, 105 lcd_show_screen, 106 NULL, 107 NULL, 108 NULL, 109 }; 110 111 #define CURRENT_DISPLAY &sharp_zaurus_C3000 112 113 const struct lcd_panel_geometry sharp_zaurus_C3000 = 114 { 115 480, /* Width */ 116 640, /* Height */ 117 0, /* No extra lines */ 118 119 LCDPANEL_ACTIVE | LCDPANEL_VSP | LCDPANEL_HSP, 120 1, /* clock divider */ 121 0, /* AC bias pin freq */ 122 123 0x28, /* horizontal sync pulse width */ 124 0x2e, /* BLW */ 125 0x7d, /* ELW */ 126 127 2, /* vertical sync pulse width */ 128 1, /* BFW */ 129 0, /* EFW */ 130 }; 131 132 struct sharp_lcd_backlight { 133 int duty; /* LZ9JG18 DAC value */ 134 int cont; /* BACKLIGHT_CONT signal */ 135 int on; /* BACKLIGHT_ON signal */ 136 }; 137 138 #define CURRENT_BACKLIGHT sharp_zaurus_C3000_bl 139 140 const struct sharp_lcd_backlight sharp_zaurus_C3000_bl[] = { 141 { 0x00, 0, 0 }, /* 0: Off */ 142 { 0x00, 0, 1 }, /* 1: 0% */ 143 { 0x01, 0, 1 }, /* 2: 20% */ 144 { 0x07, 0, 1 }, /* 3: 40% */ 145 { 0x01, 1, 1 }, /* 4: 60% */ 146 { 0x07, 1, 1 }, /* 5: 80% */ 147 { 0x11, 1, 1 }, /* 6: 100% */ 148 { -1, -1, -1 }, /* 7: Invalid */ 149 }; 150 151 static int lcd_match(device_t, cfdata_t, void *); 152 static void lcd_attach(device_t, device_t, void *); 153 154 CFATTACH_DECL_NEW(zlcd, sizeof(struct pxa2x0_lcd_softc), 155 lcd_match, lcd_attach, NULL, NULL); 156 157 static bool lcd_suspend(device_t dv, const pmf_qual_t *); 158 static bool lcd_resume(device_t dv, const pmf_qual_t *); 159 160 void lcd_cnattach(void); 161 int lcd_max_brightness(void); 162 int lcd_get_brightness(void); 163 void lcd_set_brightness(int); 164 void lcd_set_brightness_internal(int); 165 int lcd_get_backlight(void); 166 void lcd_set_backlight(int); 167 void lcd_blank(int); 168 169 static int 170 lcd_match(device_t parent, cfdata_t cf, void *aux) 171 { 172 173 return 1; 174 } 175 176 static void 177 lcd_attach(device_t parent, device_t self, void *aux) 178 { 179 struct pxa2x0_lcd_softc *sc = device_private(self); 180 struct wsemuldisplaydev_attach_args aa; 181 182 sc->dev = self; 183 184 pxa2x0_lcd_attach_sub(sc, aux, CURRENT_DISPLAY); 185 186 aa.console = glass_console; 187 aa.scrdata = &lcd_screen_list; 188 aa.accessops = &lcd_accessops; 189 aa.accesscookie = sc; 190 191 (void) config_found(self, &aa, wsemuldisplaydevprint); 192 193 /* Start with approximately 40% of full brightness. */ 194 lcd_set_brightness(3); 195 196 if (!pmf_device_register(sc->dev, lcd_suspend, lcd_resume)) 197 aprint_error_dev(sc->dev, "couldn't establish power handler\n"); 198 } 199 200 void 201 lcd_cnattach(void) 202 { 203 204 pxa2x0_lcd_cnattach(&lcd_std_screen, CURRENT_DISPLAY); 205 } 206 207 /* 208 * power management 209 */ 210 static bool 211 lcd_suspend(device_t dv, const pmf_qual_t *qual) 212 { 213 struct pxa2x0_lcd_softc *sc = device_private(dv); 214 215 lcd_set_brightness(0); 216 pxa2x0_lcd_suspend(sc); 217 218 return true; 219 } 220 221 static bool 222 lcd_resume(device_t dv, const pmf_qual_t *qual) 223 { 224 struct pxa2x0_lcd_softc *sc = device_private(dv); 225 226 pxa2x0_lcd_resume(sc); 227 lcd_set_brightness(lcd_get_brightness()); 228 229 return true; 230 } 231 232 /* 233 * wsdisplay accessops overrides 234 */ 235 static int 236 lcd_ioctl(void *v, void *vs, u_long cmd, void *data, int flag, struct lwp *l) 237 { 238 struct pxa2x0_lcd_softc *sc = (struct pxa2x0_lcd_softc *)v; 239 struct hpcfb_fbconf *fbconf; 240 struct hpcfb_dspconf *dspconf; 241 int res = EINVAL; 242 243 switch (cmd) { 244 case WSDISPLAYIO_GETPARAM: 245 case WSDISPLAYIO_SETPARAM: 246 res = lcd_param(sc, cmd, (struct wsdisplay_param *)data); 247 break; 248 249 case HPCFBIO_GCONF: 250 fbconf = (struct hpcfb_fbconf *)data; 251 if (fbconf->hf_conf_index != 0 && 252 fbconf->hf_conf_index != HPCFB_CURRENT_CONFIG) { 253 break; 254 } 255 256 fbconf->hf_conf_index = 0; 257 fbconf->hf_nconfs = 1; 258 fbconf->hf_class = HPCFB_CLASS_RGBCOLOR; 259 strlcpy(fbconf->hf_name, "Sharp Zaurus frame buffer", 260 sizeof(fbconf->hf_name)); 261 strlcpy(fbconf->hf_conf_name, "default", 262 sizeof(fbconf->hf_conf_name)); 263 fbconf->hf_width = sc->geometry->panel_width; 264 fbconf->hf_height = sc->geometry->panel_height; 265 fbconf->hf_baseaddr = (u_long)sc->active->buf_va; 266 fbconf->hf_offset = 0; 267 fbconf->hf_bytes_per_line = sc->geometry->panel_width * 268 sc->active->depth / 8; 269 fbconf->hf_nplanes = 1; 270 fbconf->hf_bytes_per_plane = sc->geometry->panel_width * 271 sc->geometry->panel_height * sc->active->depth / 8; 272 fbconf->hf_pack_width = sc->active->depth; 273 fbconf->hf_pixels_per_pack = 1; 274 fbconf->hf_pixel_width = sc->active->depth; 275 fbconf->hf_access_flags = (0 276 | HPCFB_ACCESS_BYTE 277 | HPCFB_ACCESS_WORD 278 | HPCFB_ACCESS_DWORD); 279 fbconf->hf_order_flags = 0; 280 fbconf->hf_reg_offset = 0; 281 282 fbconf->hf_class_data_length = sizeof(struct hf_rgb_tag); 283 fbconf->hf_u.hf_rgb.hf_flags = 0; 284 fbconf->hf_u.hf_rgb.hf_red_width = 5; 285 fbconf->hf_u.hf_rgb.hf_red_shift = 11; 286 fbconf->hf_u.hf_rgb.hf_green_width = 6; 287 fbconf->hf_u.hf_rgb.hf_green_shift = 5; 288 fbconf->hf_u.hf_rgb.hf_blue_width = 5; 289 fbconf->hf_u.hf_rgb.hf_blue_shift = 0; 290 fbconf->hf_u.hf_rgb.hf_alpha_width = 0; 291 fbconf->hf_u.hf_rgb.hf_alpha_shift = 0; 292 293 fbconf->hf_ext_size = 0; 294 fbconf->hf_ext_data = NULL; 295 296 res = 0; 297 break; 298 299 case HPCFBIO_SCONF: 300 fbconf = (struct hpcfb_fbconf *)data; 301 if (fbconf->hf_conf_index != 0 && 302 fbconf->hf_conf_index != HPCFB_CURRENT_CONFIG) { 303 break; 304 } 305 /* nothing to do because we have only one configuration */ 306 res = 0; 307 break; 308 309 case HPCFBIO_GDSPCONF: 310 dspconf = (struct hpcfb_dspconf *)data; 311 if ((dspconf->hd_unit_index != 0 && 312 dspconf->hd_unit_index != HPCFB_CURRENT_UNIT) || 313 (dspconf->hd_conf_index != 0 && 314 dspconf->hd_conf_index != HPCFB_CURRENT_CONFIG)) { 315 break; 316 } 317 318 dspconf->hd_unit_index = 0; 319 dspconf->hd_nunits = 1; 320 dspconf->hd_class = HPCFB_DSP_CLASS_COLORLCD; 321 strlcpy(dspconf->hd_name, "Sharp Zaurus LCD", 322 sizeof(dspconf->hd_name)); 323 dspconf->hd_op_flags = 0; 324 dspconf->hd_conf_index = 0; 325 dspconf->hd_nconfs = 1; 326 strlcpy(dspconf->hd_conf_name, "default", 327 sizeof(dspconf->hd_conf_name)); 328 dspconf->hd_width = sc->geometry->panel_width; 329 dspconf->hd_height = sc->geometry->panel_height; 330 dspconf->hd_xdpi = HPCFB_DSP_DPI_UNKNOWN; 331 dspconf->hd_ydpi = HPCFB_DSP_DPI_UNKNOWN; 332 333 res = 0; 334 break; 335 336 case HPCFBIO_SDSPCONF: 337 dspconf = (struct hpcfb_dspconf *)data; 338 if ((dspconf->hd_unit_index != 0 && 339 dspconf->hd_unit_index != HPCFB_CURRENT_UNIT) || 340 (dspconf->hd_conf_index != 0 && 341 dspconf->hd_conf_index != HPCFB_CURRENT_CONFIG)) { 342 break; 343 } 344 /* 345 * nothing to do 346 * because we have only one unit and one configuration 347 */ 348 res = 0; 349 break; 350 351 case HPCFBIO_GOP: 352 case HPCFBIO_SOP: 353 /* curently not implemented... */ 354 break; 355 } 356 357 if (res == EINVAL) 358 res = pxa2x0_lcd_ioctl(v, vs, cmd, data, flag, l); 359 return res; 360 } 361 362 static int 363 lcd_show_screen(void *v, void *cookie, int waitok, 364 void (*cb_func)(void *, int, int), void *cb_arg) 365 { 366 int error; 367 368 error = pxa2x0_lcd_show_screen(v, cookie, waitok, cb_func, cb_arg); 369 if (error) 370 return (error); 371 372 /* Turn on LCD */ 373 lcd_set_brightness(lcd_get_brightness()); 374 375 return 0; 376 } 377 378 /* 379 * wsdisplay I/O controls 380 */ 381 static int 382 lcd_param(struct pxa2x0_lcd_softc *sc, u_long cmd, struct wsdisplay_param *dp) 383 { 384 int res = EINVAL; 385 386 switch (dp->param) { 387 case WSDISPLAYIO_PARAM_BACKLIGHT: 388 if (cmd == WSDISPLAYIO_GETPARAM) { 389 dp->min = 0; 390 dp->max = 1; 391 dp->curval = lcd_get_backlight(); 392 res = 0; 393 } else if (cmd == WSDISPLAYIO_SETPARAM) { 394 lcd_set_backlight(dp->curval); 395 res = 0; 396 } 397 break; 398 399 case WSDISPLAYIO_PARAM_CONTRAST: 400 /* unsupported */ 401 res = ENOTTY; 402 break; 403 404 case WSDISPLAYIO_PARAM_BRIGHTNESS: 405 if (cmd == WSDISPLAYIO_GETPARAM) { 406 dp->min = 1; 407 dp->max = lcd_max_brightness(); 408 dp->curval = lcd_get_brightness(); 409 res = 0; 410 } else if (cmd == WSDISPLAYIO_SETPARAM) { 411 lcd_set_brightness(dp->curval); 412 res = 0; 413 } 414 break; 415 } 416 417 return res; 418 } 419 420 /* 421 * LCD backlight 422 */ 423 424 static int lcdbrightnesscurval = 1; 425 static int lcdislit = 1; 426 static int lcdisblank = 0; 427 428 int 429 lcd_max_brightness(void) 430 { 431 int i; 432 433 for (i = 0; CURRENT_BACKLIGHT[i].duty != -1; i++) 434 continue; 435 return i - 1; 436 } 437 438 int 439 lcd_get_brightness(void) 440 { 441 442 return lcdbrightnesscurval; 443 } 444 445 void 446 lcd_set_brightness(int newval) 447 { 448 int maxval; 449 450 maxval = lcd_max_brightness(); 451 if (newval < 0) 452 newval = 0; 453 else if (newval > maxval) 454 newval = maxval; 455 456 if (lcd_get_backlight() && !lcdisblank) 457 lcd_set_brightness_internal(newval); 458 459 if (newval > 0) 460 lcdbrightnesscurval = newval; 461 } 462 463 void 464 lcd_set_brightness_internal(int newval) 465 { 466 static int curval = 1; 467 int i; 468 469 /* 470 * It appears that the C3000 backlight can draw too much power if we 471 * switch it from a low to a high brightness. Increasing brightness 472 * in steps avoids this issue. 473 */ 474 if (newval > curval) { 475 for (i = curval + 1; i <= newval; i++) { 476 (void)zssp_ic_send(ZSSP_IC_LZ9JG18, 477 CURRENT_BACKLIGHT[i].duty); 478 scoop_set_backlight(CURRENT_BACKLIGHT[i].on, 479 CURRENT_BACKLIGHT[i].cont); 480 delay(5000); 481 } 482 } else { 483 (void)zssp_ic_send(ZSSP_IC_LZ9JG18, 484 CURRENT_BACKLIGHT[newval].duty); 485 scoop_set_backlight(CURRENT_BACKLIGHT[newval].on, 486 CURRENT_BACKLIGHT[newval].cont); 487 } 488 489 curval = newval; 490 } 491 492 int 493 lcd_get_backlight(void) 494 { 495 496 return lcdislit; 497 } 498 499 void 500 lcd_set_backlight(int onoff) 501 { 502 503 if (!onoff) { 504 lcd_set_brightness(0); 505 lcdislit = 0; 506 } else { 507 lcdislit = 1; 508 lcd_set_brightness(lcd_get_brightness()); 509 } 510 } 511 512 void 513 lcd_blank(int blank) 514 { 515 516 if (blank) { 517 lcd_set_brightness(0); 518 lcdisblank = 1; 519 } else { 520 lcdisblank = 0; 521 lcd_set_brightness(lcd_get_brightness()); 522 } 523 } 524
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