zlcd.c revision 1.2.2.2
1 1.2.2.2 yamt /* $NetBSD: zlcd.c,v 1.2.2.2 2006/12/18 11:42:09 yamt Exp $ */ 2 1.2.2.2 yamt /* $OpenBSD: zaurus_lcd.c,v 1.20 2006/06/02 20:50:14 miod Exp $ */ 3 1.2.2.2 yamt /* NetBSD: lubbock_lcd.c,v 1.1 2003/08/09 19:38:53 bsh Exp */ 4 1.2.2.2 yamt 5 1.2.2.2 yamt /* 6 1.2.2.2 yamt * Copyright (c) 2002, 2003 Genetec Corporation. All rights reserved. 7 1.2.2.2 yamt * Written by Hiroyuki Bessho for Genetec Corporation. 8 1.2.2.2 yamt * 9 1.2.2.2 yamt * Redistribution and use in source and binary forms, with or without 10 1.2.2.2 yamt * modification, are permitted provided that the following conditions 11 1.2.2.2 yamt * are met: 12 1.2.2.2 yamt * 1. Redistributions of source code must retain the above copyright 13 1.2.2.2 yamt * notice, this list of conditions and the following disclaimer. 14 1.2.2.2 yamt * 2. Redistributions in binary form must reproduce the above copyright 15 1.2.2.2 yamt * notice, this list of conditions and the following disclaimer in the 16 1.2.2.2 yamt * documentation and/or other materials provided with the distribution. 17 1.2.2.2 yamt * 3. The name of Genetec Corporation may not be used to endorse or 18 1.2.2.2 yamt * promote products derived from this software without specific prior 19 1.2.2.2 yamt * written permission. 20 1.2.2.2 yamt * 21 1.2.2.2 yamt * THIS SOFTWARE IS PROVIDED BY GENETEC CORPORATION ``AS IS'' AND 22 1.2.2.2 yamt * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 23 1.2.2.2 yamt * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 24 1.2.2.2 yamt * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GENETEC CORPORATION 25 1.2.2.2 yamt * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 1.2.2.2 yamt * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 1.2.2.2 yamt * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 1.2.2.2 yamt * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 1.2.2.2 yamt * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 1.2.2.2 yamt * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 1.2.2.2 yamt * POSSIBILITY OF SUCH DAMAGE. 32 1.2.2.2 yamt */ 33 1.2.2.2 yamt 34 1.2.2.2 yamt /* 35 1.2.2.2 yamt * LCD driver for Sharp Zaurus (based on the Intel Lubbock driver). 36 1.2.2.2 yamt * 37 1.2.2.2 yamt * Controlling LCD is almost completely done through PXA2X0's 38 1.2.2.2 yamt * integrated LCD controller. Codes for it is arm/xscale/pxa2x0_lcd.c. 39 1.2.2.2 yamt * 40 1.2.2.2 yamt * Codes in this file provide platform specific things including: 41 1.2.2.2 yamt * LCD on/off switch and backlight brightness 42 1.2.2.2 yamt * LCD panel geometry 43 1.2.2.2 yamt */ 44 1.2.2.2 yamt 45 1.2.2.2 yamt #include <sys/cdefs.h> 46 1.2.2.2 yamt __KERNEL_RCSID(0, "$NetBSD: zlcd.c,v 1.2.2.2 2006/12/18 11:42:09 yamt Exp $"); 47 1.2.2.2 yamt 48 1.2.2.2 yamt #include <sys/param.h> 49 1.2.2.2 yamt #include <sys/systm.h> 50 1.2.2.2 yamt #include <sys/conf.h> 51 1.2.2.2 yamt #include <sys/uio.h> 52 1.2.2.2 yamt #include <sys/malloc.h> 53 1.2.2.2 yamt 54 1.2.2.2 yamt #include <dev/cons.h> 55 1.2.2.2 yamt #include <dev/wscons/wsconsio.h> 56 1.2.2.2 yamt #include <dev/wscons/wsdisplayvar.h> 57 1.2.2.2 yamt #include <dev/wscons/wscons_callbacks.h> 58 1.2.2.2 yamt 59 1.2.2.2 yamt #include <machine/bus.h> 60 1.2.2.2 yamt #include <arm/xscale/pxa2x0var.h> 61 1.2.2.2 yamt #include <arm/xscale/pxa2x0reg.h> 62 1.2.2.2 yamt #include <arm/xscale/pxa2x0_lcd.h> 63 1.2.2.2 yamt 64 1.2.2.2 yamt #include <zaurus/dev/scoopvar.h> 65 1.2.2.2 yamt #include <zaurus/dev/zsspvar.h> 66 1.2.2.2 yamt #include <zaurus/zaurus/zaurus_var.h> 67 1.2.2.2 yamt 68 1.2.2.2 yamt /* 69 1.2.2.2 yamt * wsdisplay glue 70 1.2.2.2 yamt */ 71 1.2.2.2 yamt static struct pxa2x0_wsscreen_descr lcd_std_screen = { 72 1.2.2.2 yamt .c = { 73 1.2.2.2 yamt .name = "std", 74 1.2.2.2 yamt .textops = &pxa2x0_lcd_emulops, 75 1.2.2.2 yamt .fontwidth = 8, 76 1.2.2.2 yamt .fontheight = 16, 77 1.2.2.2 yamt .capabilities = WSSCREEN_WSCOLORS, 78 1.2.2.2 yamt }, 79 1.2.2.2 yamt .depth = 16, /* bits per pixel */ 80 1.2.2.2 yamt .flags = 0/*RI_ROTATE_CW*/, /* quarter clockwise rotation */ 81 1.2.2.2 yamt }; 82 1.2.2.2 yamt 83 1.2.2.2 yamt static const struct wsscreen_descr *lcd_scr_descr[] = { 84 1.2.2.2 yamt &lcd_std_screen.c 85 1.2.2.2 yamt }; 86 1.2.2.2 yamt 87 1.2.2.2 yamt static const struct wsscreen_list lcd_screen_list = { 88 1.2.2.2 yamt .nscreens = __arraycount(lcd_scr_descr), 89 1.2.2.2 yamt .screens = lcd_scr_descr, 90 1.2.2.2 yamt }; 91 1.2.2.2 yamt 92 1.2.2.2 yamt static int lcd_ioctl(void *, void *, u_long, caddr_t, int, struct lwp *); 93 1.2.2.2 yamt static int lcd_param(struct pxa2x0_lcd_softc *, u_long, 94 1.2.2.2 yamt struct wsdisplay_param *); 95 1.2.2.2 yamt static int lcd_show_screen(void *, void *, int, 96 1.2.2.2 yamt void (*)(void *, int, int), void *); 97 1.2.2.2 yamt 98 1.2.2.2 yamt struct wsdisplay_accessops lcd_accessops = { 99 1.2.2.2 yamt lcd_ioctl, 100 1.2.2.2 yamt pxa2x0_lcd_mmap, 101 1.2.2.2 yamt pxa2x0_lcd_alloc_screen, 102 1.2.2.2 yamt pxa2x0_lcd_free_screen, 103 1.2.2.2 yamt lcd_show_screen, 104 1.2.2.2 yamt NULL, 105 1.2.2.2 yamt NULL, 106 1.2.2.2 yamt NULL, 107 1.2.2.2 yamt }; 108 1.2.2.2 yamt 109 1.2.2.2 yamt #define CURRENT_DISPLAY &sharp_zaurus_C3000 110 1.2.2.2 yamt 111 1.2.2.2 yamt const struct lcd_panel_geometry sharp_zaurus_C3000 = 112 1.2.2.2 yamt { 113 1.2.2.2 yamt 480, /* Width */ 114 1.2.2.2 yamt 640, /* Height */ 115 1.2.2.2 yamt 0, /* No extra lines */ 116 1.2.2.2 yamt 117 1.2.2.2 yamt LCDPANEL_ACTIVE | LCDPANEL_VSP | LCDPANEL_HSP, 118 1.2.2.2 yamt 1, /* clock divider */ 119 1.2.2.2 yamt 0, /* AC bias pin freq */ 120 1.2.2.2 yamt 121 1.2.2.2 yamt 0x28, /* horizontal sync pulse width */ 122 1.2.2.2 yamt 0x2e, /* BLW */ 123 1.2.2.2 yamt 0x7d, /* ELW */ 124 1.2.2.2 yamt 125 1.2.2.2 yamt 2, /* vertical sync pulse width */ 126 1.2.2.2 yamt 1, /* BFW */ 127 1.2.2.2 yamt 0, /* EFW */ 128 1.2.2.2 yamt }; 129 1.2.2.2 yamt 130 1.2.2.2 yamt struct sharp_lcd_backlight { 131 1.2.2.2 yamt int duty; /* LZ9JG18 DAC value */ 132 1.2.2.2 yamt int cont; /* BACKLIGHT_CONT signal */ 133 1.2.2.2 yamt int on; /* BACKLIGHT_ON signal */ 134 1.2.2.2 yamt }; 135 1.2.2.2 yamt 136 1.2.2.2 yamt #define CURRENT_BACKLIGHT sharp_zaurus_C3000_bl 137 1.2.2.2 yamt 138 1.2.2.2 yamt const struct sharp_lcd_backlight sharp_zaurus_C3000_bl[] = { 139 1.2.2.2 yamt { 0x00, 0, 0 }, /* 0: Off */ 140 1.2.2.2 yamt { 0x00, 0, 1 }, /* 1: 0% */ 141 1.2.2.2 yamt { 0x01, 0, 1 }, /* 2: 20% */ 142 1.2.2.2 yamt { 0x07, 0, 1 }, /* 3: 40% */ 143 1.2.2.2 yamt { 0x01, 1, 1 }, /* 4: 60% */ 144 1.2.2.2 yamt { 0x07, 1, 1 }, /* 5: 80% */ 145 1.2.2.2 yamt { 0x11, 1, 1 }, /* 6: 100% */ 146 1.2.2.2 yamt { -1, -1, -1 }, /* 7: Invalid */ 147 1.2.2.2 yamt }; 148 1.2.2.2 yamt 149 1.2.2.2 yamt static int lcd_match(struct device *, struct cfdata *, void *); 150 1.2.2.2 yamt static void lcd_attach(struct device *, struct device *, void *); 151 1.2.2.2 yamt 152 1.2.2.2 yamt CFATTACH_DECL(zlcd, sizeof(struct pxa2x0_lcd_softc), 153 1.2.2.2 yamt lcd_match, lcd_attach, NULL, NULL); 154 1.2.2.2 yamt 155 1.2.2.2 yamt int lcd_max_brightness(void); 156 1.2.2.2 yamt int lcd_get_brightness(void); 157 1.2.2.2 yamt void lcd_set_brightness(int); 158 1.2.2.2 yamt void lcd_set_brightness_internal(int); 159 1.2.2.2 yamt int lcd_get_backlight(void); 160 1.2.2.2 yamt void lcd_set_backlight(int); 161 1.2.2.2 yamt void lcd_blank(int); 162 1.2.2.2 yamt void lcd_power(int, void *); 163 1.2.2.2 yamt 164 1.2.2.2 yamt static int 165 1.2.2.2 yamt lcd_match(struct device *parent, struct cfdata *cf, void *aux) 166 1.2.2.2 yamt { 167 1.2.2.2 yamt 168 1.2.2.2 yamt return 1; 169 1.2.2.2 yamt } 170 1.2.2.2 yamt 171 1.2.2.2 yamt static void 172 1.2.2.2 yamt lcd_attach(struct device *parent, struct device *self, void *aux) 173 1.2.2.2 yamt { 174 1.2.2.2 yamt struct pxa2x0_lcd_softc *sc = (struct pxa2x0_lcd_softc *)self; 175 1.2.2.2 yamt struct wsemuldisplaydev_attach_args aa; 176 1.2.2.2 yamt 177 1.2.2.2 yamt pxa2x0_lcd_attach_sub(sc, aux, &lcd_std_screen, CURRENT_DISPLAY, 178 1.2.2.2 yamt glass_console); 179 1.2.2.2 yamt 180 1.2.2.2 yamt aa.console = glass_console; 181 1.2.2.2 yamt aa.scrdata = &lcd_screen_list; 182 1.2.2.2 yamt aa.accessops = &lcd_accessops; 183 1.2.2.2 yamt aa.accesscookie = sc; 184 1.2.2.2 yamt 185 1.2.2.2 yamt (void) config_found(self, &aa, wsemuldisplaydevprint); 186 1.2.2.2 yamt 187 1.2.2.2 yamt /* Start with approximately 40% of full brightness. */ 188 1.2.2.2 yamt lcd_set_brightness(3); 189 1.2.2.2 yamt 190 1.2.2.2 yamt (void) powerhook_establish(sc->dev.dv_xname, lcd_power, sc); 191 1.2.2.2 yamt } 192 1.2.2.2 yamt 193 1.2.2.2 yamt /* 194 1.2.2.2 yamt * wsdisplay accessops overrides 195 1.2.2.2 yamt */ 196 1.2.2.2 yamt static int 197 1.2.2.2 yamt lcd_ioctl(void *v, void *vs, u_long cmd, caddr_t data, int flag, struct lwp *l) 198 1.2.2.2 yamt { 199 1.2.2.2 yamt struct pxa2x0_lcd_softc *sc = (struct pxa2x0_lcd_softc *)v; 200 1.2.2.2 yamt int res = EINVAL; 201 1.2.2.2 yamt 202 1.2.2.2 yamt switch (cmd) { 203 1.2.2.2 yamt case WSDISPLAYIO_GETPARAM: 204 1.2.2.2 yamt case WSDISPLAYIO_SETPARAM: 205 1.2.2.2 yamt res = lcd_param(sc, cmd, (struct wsdisplay_param *)data); 206 1.2.2.2 yamt break; 207 1.2.2.2 yamt } 208 1.2.2.2 yamt 209 1.2.2.2 yamt if (res == EINVAL) 210 1.2.2.2 yamt res = pxa2x0_lcd_ioctl(v, vs, cmd, data, flag, l); 211 1.2.2.2 yamt return res; 212 1.2.2.2 yamt } 213 1.2.2.2 yamt 214 1.2.2.2 yamt static int 215 1.2.2.2 yamt lcd_show_screen(void *v, void *cookie, int waitok, 216 1.2.2.2 yamt void (*cb_func)(void *, int, int), void *cb_arg) 217 1.2.2.2 yamt { 218 1.2.2.2 yamt int error; 219 1.2.2.2 yamt 220 1.2.2.2 yamt error = pxa2x0_lcd_show_screen(v, cookie, waitok, cb_func, cb_arg); 221 1.2.2.2 yamt if (error) 222 1.2.2.2 yamt return (error); 223 1.2.2.2 yamt 224 1.2.2.2 yamt /* Turn on LCD */ 225 1.2.2.2 yamt lcd_set_brightness(lcd_get_brightness()); 226 1.2.2.2 yamt 227 1.2.2.2 yamt return 0; 228 1.2.2.2 yamt } 229 1.2.2.2 yamt 230 1.2.2.2 yamt /* 231 1.2.2.2 yamt * wsdisplay I/O controls 232 1.2.2.2 yamt */ 233 1.2.2.2 yamt static int 234 1.2.2.2 yamt lcd_param(struct pxa2x0_lcd_softc *sc, u_long cmd, 235 1.2.2.2 yamt struct wsdisplay_param *dp) 236 1.2.2.2 yamt { 237 1.2.2.2 yamt int res = EINVAL; 238 1.2.2.2 yamt 239 1.2.2.2 yamt switch (dp->param) { 240 1.2.2.2 yamt case WSDISPLAYIO_PARAM_BACKLIGHT: 241 1.2.2.2 yamt if (cmd == WSDISPLAYIO_GETPARAM) { 242 1.2.2.2 yamt dp->min = 0; 243 1.2.2.2 yamt dp->max = 1; 244 1.2.2.2 yamt dp->curval = lcd_get_backlight(); 245 1.2.2.2 yamt res = 0; 246 1.2.2.2 yamt } else if (cmd == WSDISPLAYIO_SETPARAM) { 247 1.2.2.2 yamt lcd_set_backlight(dp->curval); 248 1.2.2.2 yamt res = 0; 249 1.2.2.2 yamt } 250 1.2.2.2 yamt break; 251 1.2.2.2 yamt 252 1.2.2.2 yamt case WSDISPLAYIO_PARAM_CONTRAST: 253 1.2.2.2 yamt /* unsupported */ 254 1.2.2.2 yamt res = ENOTTY; 255 1.2.2.2 yamt break; 256 1.2.2.2 yamt 257 1.2.2.2 yamt case WSDISPLAYIO_PARAM_BRIGHTNESS: 258 1.2.2.2 yamt if (cmd == WSDISPLAYIO_GETPARAM) { 259 1.2.2.2 yamt dp->min = 1; 260 1.2.2.2 yamt dp->max = lcd_max_brightness(); 261 1.2.2.2 yamt dp->curval = lcd_get_brightness(); 262 1.2.2.2 yamt res = 0; 263 1.2.2.2 yamt } else if (cmd == WSDISPLAYIO_SETPARAM) { 264 1.2.2.2 yamt lcd_set_brightness(dp->curval); 265 1.2.2.2 yamt res = 0; 266 1.2.2.2 yamt } 267 1.2.2.2 yamt break; 268 1.2.2.2 yamt } 269 1.2.2.2 yamt 270 1.2.2.2 yamt return res; 271 1.2.2.2 yamt } 272 1.2.2.2 yamt 273 1.2.2.2 yamt /* 274 1.2.2.2 yamt * LCD backlight 275 1.2.2.2 yamt */ 276 1.2.2.2 yamt 277 1.2.2.2 yamt static int lcdbrightnesscurval = 1; 278 1.2.2.2 yamt static int lcdislit = 1; 279 1.2.2.2 yamt static int lcdisblank = 0; 280 1.2.2.2 yamt 281 1.2.2.2 yamt int 282 1.2.2.2 yamt lcd_max_brightness(void) 283 1.2.2.2 yamt { 284 1.2.2.2 yamt int i; 285 1.2.2.2 yamt 286 1.2.2.2 yamt for (i = 0; CURRENT_BACKLIGHT[i].duty != -1; i++) 287 1.2.2.2 yamt continue; 288 1.2.2.2 yamt return i - 1; 289 1.2.2.2 yamt } 290 1.2.2.2 yamt 291 1.2.2.2 yamt int 292 1.2.2.2 yamt lcd_get_brightness(void) 293 1.2.2.2 yamt { 294 1.2.2.2 yamt 295 1.2.2.2 yamt return lcdbrightnesscurval; 296 1.2.2.2 yamt } 297 1.2.2.2 yamt 298 1.2.2.2 yamt void 299 1.2.2.2 yamt lcd_set_brightness(int newval) 300 1.2.2.2 yamt { 301 1.2.2.2 yamt int maxval; 302 1.2.2.2 yamt 303 1.2.2.2 yamt maxval = lcd_max_brightness(); 304 1.2.2.2 yamt if (newval < 0) 305 1.2.2.2 yamt newval = 0; 306 1.2.2.2 yamt else if (newval > maxval) 307 1.2.2.2 yamt newval = maxval; 308 1.2.2.2 yamt 309 1.2.2.2 yamt if (lcd_get_backlight() && !lcdisblank) 310 1.2.2.2 yamt lcd_set_brightness_internal(newval); 311 1.2.2.2 yamt 312 1.2.2.2 yamt if (newval > 0) 313 1.2.2.2 yamt lcdbrightnesscurval = newval; 314 1.2.2.2 yamt } 315 1.2.2.2 yamt 316 1.2.2.2 yamt void 317 1.2.2.2 yamt lcd_set_brightness_internal(int newval) 318 1.2.2.2 yamt { 319 1.2.2.2 yamt static int curval = 1; 320 1.2.2.2 yamt int i; 321 1.2.2.2 yamt 322 1.2.2.2 yamt /* 323 1.2.2.2 yamt * It appears that the C3000 backlight can draw too much power if we 324 1.2.2.2 yamt * switch it from a low to a high brightness. Increasing brightness 325 1.2.2.2 yamt * in steps avoids this issue. 326 1.2.2.2 yamt */ 327 1.2.2.2 yamt if (newval > curval) { 328 1.2.2.2 yamt for (i = curval + 1; i <= newval; i++) { 329 1.2.2.2 yamt (void)zssp_ic_send(ZSSP_IC_LZ9JG18, 330 1.2.2.2 yamt CURRENT_BACKLIGHT[i].duty); 331 1.2.2.2 yamt scoop_set_backlight(CURRENT_BACKLIGHT[i].on, 332 1.2.2.2 yamt CURRENT_BACKLIGHT[i].cont); 333 1.2.2.2 yamt delay(5000); 334 1.2.2.2 yamt } 335 1.2.2.2 yamt } else { 336 1.2.2.2 yamt (void)zssp_ic_send(ZSSP_IC_LZ9JG18, 337 1.2.2.2 yamt CURRENT_BACKLIGHT[newval].duty); 338 1.2.2.2 yamt scoop_set_backlight(CURRENT_BACKLIGHT[newval].on, 339 1.2.2.2 yamt CURRENT_BACKLIGHT[newval].cont); 340 1.2.2.2 yamt } 341 1.2.2.2 yamt 342 1.2.2.2 yamt curval = newval; 343 1.2.2.2 yamt } 344 1.2.2.2 yamt 345 1.2.2.2 yamt int 346 1.2.2.2 yamt lcd_get_backlight(void) 347 1.2.2.2 yamt { 348 1.2.2.2 yamt 349 1.2.2.2 yamt return lcdislit; 350 1.2.2.2 yamt } 351 1.2.2.2 yamt 352 1.2.2.2 yamt void 353 1.2.2.2 yamt lcd_set_backlight(int onoff) 354 1.2.2.2 yamt { 355 1.2.2.2 yamt 356 1.2.2.2 yamt if (!onoff) { 357 1.2.2.2 yamt lcd_set_brightness(0); 358 1.2.2.2 yamt lcdislit = 0; 359 1.2.2.2 yamt } else { 360 1.2.2.2 yamt lcdislit = 1; 361 1.2.2.2 yamt lcd_set_brightness(lcd_get_brightness()); 362 1.2.2.2 yamt } 363 1.2.2.2 yamt } 364 1.2.2.2 yamt 365 1.2.2.2 yamt void 366 1.2.2.2 yamt lcd_blank(int blank) 367 1.2.2.2 yamt { 368 1.2.2.2 yamt 369 1.2.2.2 yamt if (blank) { 370 1.2.2.2 yamt lcd_set_brightness(0); 371 1.2.2.2 yamt lcdisblank = 1; 372 1.2.2.2 yamt } else { 373 1.2.2.2 yamt lcdisblank = 0; 374 1.2.2.2 yamt lcd_set_brightness(lcd_get_brightness()); 375 1.2.2.2 yamt } 376 1.2.2.2 yamt } 377 1.2.2.2 yamt 378 1.2.2.2 yamt void 379 1.2.2.2 yamt lcd_power(int why, void *v) 380 1.2.2.2 yamt { 381 1.2.2.2 yamt 382 1.2.2.2 yamt switch (why) { 383 1.2.2.2 yamt case PWR_SUSPEND: 384 1.2.2.2 yamt case PWR_STANDBY: 385 1.2.2.2 yamt lcd_set_brightness(0); 386 1.2.2.2 yamt pxa2x0_lcd_power(why, v); 387 1.2.2.2 yamt break; 388 1.2.2.2 yamt 389 1.2.2.2 yamt case PWR_RESUME: 390 1.2.2.2 yamt pxa2x0_lcd_power(why, v); 391 1.2.2.2 yamt lcd_set_brightness(lcd_get_brightness()); 392 1.2.2.2 yamt break; 393 1.2.2.2 yamt } 394 1.2.2.2 yamt } 395
Indexes created Tue Oct 21 07:10:13 GMT 2025