zlcd.c revision 1.8
1 /* $NetBSD: zlcd.c,v 1.8 2009/01/29 12:28:15 nonaka 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 1.8 2009/01/29 12:28:15 nonaka 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 void lcd_cnattach(void); 158 int lcd_max_brightness(void); 159 int lcd_get_brightness(void); 160 void lcd_set_brightness(int); 161 void lcd_set_brightness_internal(int); 162 int lcd_get_backlight(void); 163 void lcd_set_backlight(int); 164 void lcd_blank(int); 165 void lcd_power(int, void *); 166 167 static int 168 lcd_match(device_t parent, cfdata_t cf, void *aux) 169 { 170 171 return 1; 172 } 173 174 static void 175 lcd_attach(device_t parent, device_t self, void *aux) 176 { 177 struct pxa2x0_lcd_softc *sc = device_private(self); 178 struct wsemuldisplaydev_attach_args aa; 179 180 sc->dev = self; 181 182 pxa2x0_lcd_attach_sub(sc, aux, CURRENT_DISPLAY); 183 184 aa.console = glass_console; 185 aa.scrdata = &lcd_screen_list; 186 aa.accessops = &lcd_accessops; 187 aa.accesscookie = sc; 188 189 (void) config_found(self, &aa, wsemuldisplaydevprint); 190 191 /* Start with approximately 40% of full brightness. */ 192 lcd_set_brightness(3); 193 194 (void) powerhook_establish(device_xname(sc->dev), lcd_power, sc); 195 } 196 197 void 198 lcd_cnattach(void) 199 { 200 201 pxa2x0_lcd_cnattach(&lcd_std_screen, CURRENT_DISPLAY); 202 } 203 204 /* 205 * wsdisplay accessops overrides 206 */ 207 static int 208 lcd_ioctl(void *v, void *vs, u_long cmd, void *data, int flag, struct lwp *l) 209 { 210 struct pxa2x0_lcd_softc *sc = (struct pxa2x0_lcd_softc *)v; 211 struct hpcfb_fbconf *fbconf; 212 struct hpcfb_dspconf *dspconf; 213 int res = EINVAL; 214 215 switch (cmd) { 216 case WSDISPLAYIO_GETPARAM: 217 case WSDISPLAYIO_SETPARAM: 218 res = lcd_param(sc, cmd, (struct wsdisplay_param *)data); 219 break; 220 221 case HPCFBIO_GCONF: 222 fbconf = (struct hpcfb_fbconf *)data; 223 if (fbconf->hf_conf_index != 0 && 224 fbconf->hf_conf_index != HPCFB_CURRENT_CONFIG) { 225 break; 226 } 227 228 fbconf->hf_conf_index = 0; 229 fbconf->hf_nconfs = 1; 230 fbconf->hf_class = HPCFB_CLASS_RGBCOLOR; 231 strlcpy(fbconf->hf_name, "Sharp Zaurus frame buffer", 232 sizeof(fbconf->hf_name)); 233 strlcpy(fbconf->hf_conf_name, "default", 234 sizeof(fbconf->hf_conf_name)); 235 fbconf->hf_width = sc->geometry->panel_width; 236 fbconf->hf_height = sc->geometry->panel_height; 237 fbconf->hf_baseaddr = (u_long)sc->active->buf_va; 238 fbconf->hf_offset = 0; 239 fbconf->hf_bytes_per_line = sc->geometry->panel_width * 240 sc->active->depth / 8; 241 fbconf->hf_nplanes = 1; 242 fbconf->hf_bytes_per_plane = sc->geometry->panel_width * 243 sc->geometry->panel_height * sc->active->depth / 8; 244 fbconf->hf_pack_width = sc->active->depth; 245 fbconf->hf_pixels_per_pack = 1; 246 fbconf->hf_pixel_width = sc->active->depth; 247 fbconf->hf_access_flags = (0 248 | HPCFB_ACCESS_BYTE 249 | HPCFB_ACCESS_WORD 250 | HPCFB_ACCESS_DWORD); 251 fbconf->hf_order_flags = 0; 252 fbconf->hf_reg_offset = 0; 253 254 fbconf->hf_class_data_length = sizeof(struct hf_rgb_tag); 255 fbconf->hf_u.hf_rgb.hf_flags = 0; 256 fbconf->hf_u.hf_rgb.hf_red_width = 5; 257 fbconf->hf_u.hf_rgb.hf_red_shift = 11; 258 fbconf->hf_u.hf_rgb.hf_green_width = 6; 259 fbconf->hf_u.hf_rgb.hf_green_shift = 5; 260 fbconf->hf_u.hf_rgb.hf_blue_width = 5; 261 fbconf->hf_u.hf_rgb.hf_blue_shift = 0; 262 fbconf->hf_u.hf_rgb.hf_alpha_width = 0; 263 fbconf->hf_u.hf_rgb.hf_alpha_shift = 0; 264 265 fbconf->hf_ext_size = 0; 266 fbconf->hf_ext_data = NULL; 267 268 res = 0; 269 break; 270 271 case HPCFBIO_SCONF: 272 fbconf = (struct hpcfb_fbconf *)data; 273 if (fbconf->hf_conf_index != 0 && 274 fbconf->hf_conf_index != HPCFB_CURRENT_CONFIG) { 275 break; 276 } 277 /* nothing to do because we have only one configuration */ 278 res = 0; 279 break; 280 281 case HPCFBIO_GDSPCONF: 282 dspconf = (struct hpcfb_dspconf *)data; 283 if ((dspconf->hd_unit_index != 0 && 284 dspconf->hd_unit_index != HPCFB_CURRENT_UNIT) || 285 (dspconf->hd_conf_index != 0 && 286 dspconf->hd_conf_index != HPCFB_CURRENT_CONFIG)) { 287 break; 288 } 289 290 dspconf->hd_unit_index = 0; 291 dspconf->hd_nunits = 1; 292 dspconf->hd_class = HPCFB_DSP_CLASS_COLORLCD; 293 strlcpy(dspconf->hd_name, "Sharp Zaurus LCD", 294 sizeof(dspconf->hd_name)); 295 dspconf->hd_op_flags = 0; 296 dspconf->hd_conf_index = 0; 297 dspconf->hd_nconfs = 1; 298 strlcpy(dspconf->hd_conf_name, "default", 299 sizeof(dspconf->hd_conf_name)); 300 dspconf->hd_width = sc->geometry->panel_width; 301 dspconf->hd_height = sc->geometry->panel_height; 302 dspconf->hd_xdpi = HPCFB_DSP_DPI_UNKNOWN; 303 dspconf->hd_ydpi = HPCFB_DSP_DPI_UNKNOWN; 304 305 res = 0; 306 break; 307 308 case HPCFBIO_SDSPCONF: 309 dspconf = (struct hpcfb_dspconf *)data; 310 if ((dspconf->hd_unit_index != 0 && 311 dspconf->hd_unit_index != HPCFB_CURRENT_UNIT) || 312 (dspconf->hd_conf_index != 0 && 313 dspconf->hd_conf_index != HPCFB_CURRENT_CONFIG)) { 314 break; 315 } 316 /* 317 * nothing to do 318 * because we have only one unit and one configuration 319 */ 320 res = 0; 321 break; 322 323 case HPCFBIO_GOP: 324 case HPCFBIO_SOP: 325 /* curently not implemented... */ 326 break; 327 } 328 329 if (res == EINVAL) 330 res = pxa2x0_lcd_ioctl(v, vs, cmd, data, flag, l); 331 return res; 332 } 333 334 static int 335 lcd_show_screen(void *v, void *cookie, int waitok, 336 void (*cb_func)(void *, int, int), void *cb_arg) 337 { 338 int error; 339 340 error = pxa2x0_lcd_show_screen(v, cookie, waitok, cb_func, cb_arg); 341 if (error) 342 return (error); 343 344 /* Turn on LCD */ 345 lcd_set_brightness(lcd_get_brightness()); 346 347 return 0; 348 } 349 350 /* 351 * wsdisplay I/O controls 352 */ 353 static int 354 lcd_param(struct pxa2x0_lcd_softc *sc, u_long cmd, struct wsdisplay_param *dp) 355 { 356 int res = EINVAL; 357 358 switch (dp->param) { 359 case WSDISPLAYIO_PARAM_BACKLIGHT: 360 if (cmd == WSDISPLAYIO_GETPARAM) { 361 dp->min = 0; 362 dp->max = 1; 363 dp->curval = lcd_get_backlight(); 364 res = 0; 365 } else if (cmd == WSDISPLAYIO_SETPARAM) { 366 lcd_set_backlight(dp->curval); 367 res = 0; 368 } 369 break; 370 371 case WSDISPLAYIO_PARAM_CONTRAST: 372 /* unsupported */ 373 res = ENOTTY; 374 break; 375 376 case WSDISPLAYIO_PARAM_BRIGHTNESS: 377 if (cmd == WSDISPLAYIO_GETPARAM) { 378 dp->min = 1; 379 dp->max = lcd_max_brightness(); 380 dp->curval = lcd_get_brightness(); 381 res = 0; 382 } else if (cmd == WSDISPLAYIO_SETPARAM) { 383 lcd_set_brightness(dp->curval); 384 res = 0; 385 } 386 break; 387 } 388 389 return res; 390 } 391 392 /* 393 * LCD backlight 394 */ 395 396 static int lcdbrightnesscurval = 1; 397 static int lcdislit = 1; 398 static int lcdisblank = 0; 399 400 int 401 lcd_max_brightness(void) 402 { 403 int i; 404 405 for (i = 0; CURRENT_BACKLIGHT[i].duty != -1; i++) 406 continue; 407 return i - 1; 408 } 409 410 int 411 lcd_get_brightness(void) 412 { 413 414 return lcdbrightnesscurval; 415 } 416 417 void 418 lcd_set_brightness(int newval) 419 { 420 int maxval; 421 422 maxval = lcd_max_brightness(); 423 if (newval < 0) 424 newval = 0; 425 else if (newval > maxval) 426 newval = maxval; 427 428 if (lcd_get_backlight() && !lcdisblank) 429 lcd_set_brightness_internal(newval); 430 431 if (newval > 0) 432 lcdbrightnesscurval = newval; 433 } 434 435 void 436 lcd_set_brightness_internal(int newval) 437 { 438 static int curval = 1; 439 int i; 440 441 /* 442 * It appears that the C3000 backlight can draw too much power if we 443 * switch it from a low to a high brightness. Increasing brightness 444 * in steps avoids this issue. 445 */ 446 if (newval > curval) { 447 for (i = curval + 1; i <= newval; i++) { 448 (void)zssp_ic_send(ZSSP_IC_LZ9JG18, 449 CURRENT_BACKLIGHT[i].duty); 450 scoop_set_backlight(CURRENT_BACKLIGHT[i].on, 451 CURRENT_BACKLIGHT[i].cont); 452 delay(5000); 453 } 454 } else { 455 (void)zssp_ic_send(ZSSP_IC_LZ9JG18, 456 CURRENT_BACKLIGHT[newval].duty); 457 scoop_set_backlight(CURRENT_BACKLIGHT[newval].on, 458 CURRENT_BACKLIGHT[newval].cont); 459 } 460 461 curval = newval; 462 } 463 464 int 465 lcd_get_backlight(void) 466 { 467 468 return lcdislit; 469 } 470 471 void 472 lcd_set_backlight(int onoff) 473 { 474 475 if (!onoff) { 476 lcd_set_brightness(0); 477 lcdislit = 0; 478 } else { 479 lcdislit = 1; 480 lcd_set_brightness(lcd_get_brightness()); 481 } 482 } 483 484 void 485 lcd_blank(int blank) 486 { 487 488 if (blank) { 489 lcd_set_brightness(0); 490 lcdisblank = 1; 491 } else { 492 lcdisblank = 0; 493 lcd_set_brightness(lcd_get_brightness()); 494 } 495 } 496 497 void 498 lcd_power(int why, void *v) 499 { 500 501 switch (why) { 502 case PWR_SUSPEND: 503 case PWR_STANDBY: 504 lcd_set_brightness(0); 505 pxa2x0_lcd_power(why, v); 506 break; 507 508 case PWR_RESUME: 509 pxa2x0_lcd_power(why, v); 510 lcd_set_brightness(lcd_get_brightness()); 511 break; 512 } 513 } 514
Indexes created Mon Sep 29 21:09:56 GMT 2025