zlcd.c revision 1.6
1 /* $NetBSD: zlcd.c,v 1.6 2007/06/28 15:41:09 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 1.6 2007/06/28 15:41:09 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(struct device *, struct cfdata *, void *); 152 static void lcd_attach(struct device *, struct device *, void *); 153 154 CFATTACH_DECL(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(struct device *parent, struct cfdata *cf, void *aux) 169 { 170 171 return 1; 172 } 173 174 static void 175 lcd_attach(struct device *parent, struct device *self, void *aux) 176 { 177 struct pxa2x0_lcd_softc *sc = (struct pxa2x0_lcd_softc *)self; 178 struct wsemuldisplaydev_attach_args aa; 179 180 pxa2x0_lcd_attach_sub(sc, aux, CURRENT_DISPLAY); 181 182 aa.console = glass_console; 183 aa.scrdata = &lcd_screen_list; 184 aa.accessops = &lcd_accessops; 185 aa.accesscookie = sc; 186 187 (void) config_found(self, &aa, wsemuldisplaydevprint); 188 189 /* Start with approximately 40% of full brightness. */ 190 lcd_set_brightness(3); 191 192 (void) powerhook_establish(sc->dev.dv_xname, lcd_power, sc); 193 } 194 195 void 196 lcd_cnattach(void) 197 { 198 199 pxa2x0_lcd_cnattach(&lcd_std_screen, CURRENT_DISPLAY); 200 } 201 202 /* 203 * wsdisplay accessops overrides 204 */ 205 static int 206 lcd_ioctl(void *v, void *vs, u_long cmd, void *data, int flag, struct lwp *l) 207 { 208 struct pxa2x0_lcd_softc *sc = (struct pxa2x0_lcd_softc *)v; 209 struct hpcfb_fbconf *fbconf; 210 struct hpcfb_dspconf *dspconf; 211 int res = EINVAL; 212 213 switch (cmd) { 214 case WSDISPLAYIO_GETPARAM: 215 case WSDISPLAYIO_SETPARAM: 216 res = lcd_param(sc, cmd, (struct wsdisplay_param *)data); 217 break; 218 219 case HPCFBIO_GCONF: 220 fbconf = (struct hpcfb_fbconf *)data; 221 if (fbconf->hf_conf_index != 0 && 222 fbconf->hf_conf_index != HPCFB_CURRENT_CONFIG) { 223 break; 224 } 225 226 fbconf->hf_conf_index = 0; 227 fbconf->hf_nconfs = 1; 228 fbconf->hf_class = HPCFB_CLASS_RGBCOLOR; 229 strlcpy(fbconf->hf_name, "Sharp Zaurus frame buffer", 230 sizeof(fbconf->hf_name)); 231 strlcpy(fbconf->hf_conf_name, "default", 232 sizeof(fbconf->hf_conf_name)); 233 fbconf->hf_width = sc->geometry->panel_width; 234 fbconf->hf_height = sc->geometry->panel_height; 235 fbconf->hf_baseaddr = (u_long)sc->active->buf_va; 236 fbconf->hf_offset = 0; 237 fbconf->hf_bytes_per_line = sc->geometry->panel_width * 238 sc->active->depth / 8; 239 fbconf->hf_nplanes = 1; 240 fbconf->hf_bytes_per_plane = sc->geometry->panel_width * 241 sc->geometry->panel_height * sc->active->depth / 8; 242 fbconf->hf_pack_width = sc->active->depth; 243 fbconf->hf_pixels_per_pack = 1; 244 fbconf->hf_pixel_width = sc->active->depth; 245 fbconf->hf_access_flags = (0 246 | HPCFB_ACCESS_BYTE 247 | HPCFB_ACCESS_WORD 248 | HPCFB_ACCESS_DWORD); 249 fbconf->hf_order_flags = 0; 250 fbconf->hf_reg_offset = 0; 251 252 fbconf->hf_class_data_length = sizeof(struct hf_rgb_tag); 253 fbconf->hf_u.hf_rgb.hf_flags = 0; 254 fbconf->hf_u.hf_rgb.hf_red_width = 5; 255 fbconf->hf_u.hf_rgb.hf_red_shift = 11; 256 fbconf->hf_u.hf_rgb.hf_green_width = 6; 257 fbconf->hf_u.hf_rgb.hf_green_shift = 5; 258 fbconf->hf_u.hf_rgb.hf_blue_width = 5; 259 fbconf->hf_u.hf_rgb.hf_blue_shift = 0; 260 fbconf->hf_u.hf_rgb.hf_alpha_width = 0; 261 fbconf->hf_u.hf_rgb.hf_alpha_shift = 0; 262 263 fbconf->hf_ext_size = 0; 264 fbconf->hf_ext_data = NULL; 265 266 res = 0; 267 break; 268 269 case HPCFBIO_SCONF: 270 fbconf = (struct hpcfb_fbconf *)data; 271 if (fbconf->hf_conf_index != 0 && 272 fbconf->hf_conf_index != HPCFB_CURRENT_CONFIG) { 273 break; 274 } 275 /* nothing to do because we have only one configuration */ 276 res = 0; 277 break; 278 279 case HPCFBIO_GDSPCONF: 280 dspconf = (struct hpcfb_dspconf *)data; 281 if ((dspconf->hd_unit_index != 0 && 282 dspconf->hd_unit_index != HPCFB_CURRENT_UNIT) || 283 (dspconf->hd_conf_index != 0 && 284 dspconf->hd_conf_index != HPCFB_CURRENT_CONFIG)) { 285 break; 286 } 287 288 dspconf->hd_unit_index = 0; 289 dspconf->hd_nunits = 1; 290 dspconf->hd_class = HPCFB_DSP_CLASS_COLORLCD; 291 strlcpy(dspconf->hd_name, "Sharp Zaurus LCD", 292 sizeof(dspconf->hd_name)); 293 dspconf->hd_op_flags = 0; 294 dspconf->hd_conf_index = 0; 295 dspconf->hd_nconfs = 1; 296 strlcpy(dspconf->hd_conf_name, "default", 297 sizeof(dspconf->hd_conf_name)); 298 dspconf->hd_width = sc->geometry->panel_width; 299 dspconf->hd_height = sc->geometry->panel_height; 300 dspconf->hd_xdpi = HPCFB_DSP_DPI_UNKNOWN; 301 dspconf->hd_ydpi = HPCFB_DSP_DPI_UNKNOWN; 302 303 res = 0; 304 break; 305 306 case HPCFBIO_SDSPCONF: 307 dspconf = (struct hpcfb_dspconf *)data; 308 if ((dspconf->hd_unit_index != 0 && 309 dspconf->hd_unit_index != HPCFB_CURRENT_UNIT) || 310 (dspconf->hd_conf_index != 0 && 311 dspconf->hd_conf_index != HPCFB_CURRENT_CONFIG)) { 312 break; 313 } 314 /* 315 * nothing to do 316 * because we have only one unit and one configuration 317 */ 318 res = 0; 319 break; 320 321 case HPCFBIO_GOP: 322 case HPCFBIO_SOP: 323 /* curently not implemented... */ 324 break; 325 } 326 327 if (res == EINVAL) 328 res = pxa2x0_lcd_ioctl(v, vs, cmd, data, flag, l); 329 return res; 330 } 331 332 static int 333 lcd_show_screen(void *v, void *cookie, int waitok, 334 void (*cb_func)(void *, int, int), void *cb_arg) 335 { 336 int error; 337 338 error = pxa2x0_lcd_show_screen(v, cookie, waitok, cb_func, cb_arg); 339 if (error) 340 return (error); 341 342 /* Turn on LCD */ 343 lcd_set_brightness(lcd_get_brightness()); 344 345 return 0; 346 } 347 348 /* 349 * wsdisplay I/O controls 350 */ 351 static int 352 lcd_param(struct pxa2x0_lcd_softc *sc, u_long cmd, struct wsdisplay_param *dp) 353 { 354 int res = EINVAL; 355 356 switch (dp->param) { 357 case WSDISPLAYIO_PARAM_BACKLIGHT: 358 if (cmd == WSDISPLAYIO_GETPARAM) { 359 dp->min = 0; 360 dp->max = 1; 361 dp->curval = lcd_get_backlight(); 362 res = 0; 363 } else if (cmd == WSDISPLAYIO_SETPARAM) { 364 lcd_set_backlight(dp->curval); 365 res = 0; 366 } 367 break; 368 369 case WSDISPLAYIO_PARAM_CONTRAST: 370 /* unsupported */ 371 res = ENOTTY; 372 break; 373 374 case WSDISPLAYIO_PARAM_BRIGHTNESS: 375 if (cmd == WSDISPLAYIO_GETPARAM) { 376 dp->min = 1; 377 dp->max = lcd_max_brightness(); 378 dp->curval = lcd_get_brightness(); 379 res = 0; 380 } else if (cmd == WSDISPLAYIO_SETPARAM) { 381 lcd_set_brightness(dp->curval); 382 res = 0; 383 } 384 break; 385 } 386 387 return res; 388 } 389 390 /* 391 * LCD backlight 392 */ 393 394 static int lcdbrightnesscurval = 1; 395 static int lcdislit = 1; 396 static int lcdisblank = 0; 397 398 int 399 lcd_max_brightness(void) 400 { 401 int i; 402 403 for (i = 0; CURRENT_BACKLIGHT[i].duty != -1; i++) 404 continue; 405 return i - 1; 406 } 407 408 int 409 lcd_get_brightness(void) 410 { 411 412 return lcdbrightnesscurval; 413 } 414 415 void 416 lcd_set_brightness(int newval) 417 { 418 int maxval; 419 420 maxval = lcd_max_brightness(); 421 if (newval < 0) 422 newval = 0; 423 else if (newval > maxval) 424 newval = maxval; 425 426 if (lcd_get_backlight() && !lcdisblank) 427 lcd_set_brightness_internal(newval); 428 429 if (newval > 0) 430 lcdbrightnesscurval = newval; 431 } 432 433 void 434 lcd_set_brightness_internal(int newval) 435 { 436 static int curval = 1; 437 int i; 438 439 /* 440 * It appears that the C3000 backlight can draw too much power if we 441 * switch it from a low to a high brightness. Increasing brightness 442 * in steps avoids this issue. 443 */ 444 if (newval > curval) { 445 for (i = curval + 1; i <= newval; i++) { 446 (void)zssp_ic_send(ZSSP_IC_LZ9JG18, 447 CURRENT_BACKLIGHT[i].duty); 448 scoop_set_backlight(CURRENT_BACKLIGHT[i].on, 449 CURRENT_BACKLIGHT[i].cont); 450 delay(5000); 451 } 452 } else { 453 (void)zssp_ic_send(ZSSP_IC_LZ9JG18, 454 CURRENT_BACKLIGHT[newval].duty); 455 scoop_set_backlight(CURRENT_BACKLIGHT[newval].on, 456 CURRENT_BACKLIGHT[newval].cont); 457 } 458 459 curval = newval; 460 } 461 462 int 463 lcd_get_backlight(void) 464 { 465 466 return lcdislit; 467 } 468 469 void 470 lcd_set_backlight(int onoff) 471 { 472 473 if (!onoff) { 474 lcd_set_brightness(0); 475 lcdislit = 0; 476 } else { 477 lcdislit = 1; 478 lcd_set_brightness(lcd_get_brightness()); 479 } 480 } 481 482 void 483 lcd_blank(int blank) 484 { 485 486 if (blank) { 487 lcd_set_brightness(0); 488 lcdisblank = 1; 489 } else { 490 lcdisblank = 0; 491 lcd_set_brightness(lcd_get_brightness()); 492 } 493 } 494 495 void 496 lcd_power(int why, void *v) 497 { 498 499 switch (why) { 500 case PWR_SUSPEND: 501 case PWR_STANDBY: 502 lcd_set_brightness(0); 503 pxa2x0_lcd_power(why, v); 504 break; 505 506 case PWR_RESUME: 507 pxa2x0_lcd_power(why, v); 508 lcd_set_brightness(lcd_get_brightness()); 509 break; 510 } 511 } 512
Indexes created Mon Sep 29 21:09:56 GMT 2025