zlcd.c revision 1.3.2.4
1 1.3.2.4 yamt /* $NetBSD: zlcd.c,v 1.3.2.4 2007/09/03 14:31:42 yamt Exp $ */ 2 1.3.2.2 yamt /* $OpenBSD: zaurus_lcd.c,v 1.20 2006/06/02 20:50:14 miod Exp $ */ 3 1.3.2.2 yamt /* NetBSD: lubbock_lcd.c,v 1.1 2003/08/09 19:38:53 bsh Exp */ 4 1.3.2.2 yamt 5 1.3.2.2 yamt /* 6 1.3.2.2 yamt * Copyright (c) 2002, 2003 Genetec Corporation. All rights reserved. 7 1.3.2.2 yamt * Written by Hiroyuki Bessho for Genetec Corporation. 8 1.3.2.2 yamt * 9 1.3.2.2 yamt * Redistribution and use in source and binary forms, with or without 10 1.3.2.2 yamt * modification, are permitted provided that the following conditions 11 1.3.2.2 yamt * are met: 12 1.3.2.2 yamt * 1. Redistributions of source code must retain the above copyright 13 1.3.2.2 yamt * notice, this list of conditions and the following disclaimer. 14 1.3.2.2 yamt * 2. Redistributions in binary form must reproduce the above copyright 15 1.3.2.2 yamt * notice, this list of conditions and the following disclaimer in the 16 1.3.2.2 yamt * documentation and/or other materials provided with the distribution. 17 1.3.2.2 yamt * 3. The name of Genetec Corporation may not be used to endorse or 18 1.3.2.2 yamt * promote products derived from this software without specific prior 19 1.3.2.2 yamt * written permission. 20 1.3.2.2 yamt * 21 1.3.2.2 yamt * THIS SOFTWARE IS PROVIDED BY GENETEC CORPORATION ``AS IS'' AND 22 1.3.2.2 yamt * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 23 1.3.2.2 yamt * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 24 1.3.2.2 yamt * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GENETEC CORPORATION 25 1.3.2.2 yamt * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 1.3.2.2 yamt * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 1.3.2.2 yamt * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 1.3.2.2 yamt * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 1.3.2.2 yamt * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 1.3.2.2 yamt * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 1.3.2.2 yamt * POSSIBILITY OF SUCH DAMAGE. 32 1.3.2.2 yamt */ 33 1.3.2.2 yamt 34 1.3.2.2 yamt /* 35 1.3.2.2 yamt * LCD driver for Sharp Zaurus (based on the Intel Lubbock driver). 36 1.3.2.2 yamt * 37 1.3.2.2 yamt * Controlling LCD is almost completely done through PXA2X0's 38 1.3.2.2 yamt * integrated LCD controller. Codes for it is arm/xscale/pxa2x0_lcd.c. 39 1.3.2.2 yamt * 40 1.3.2.2 yamt * Codes in this file provide platform specific things including: 41 1.3.2.2 yamt * LCD on/off switch and backlight brightness 42 1.3.2.2 yamt * LCD panel geometry 43 1.3.2.2 yamt */ 44 1.3.2.2 yamt 45 1.3.2.2 yamt #include <sys/cdefs.h> 46 1.3.2.4 yamt __KERNEL_RCSID(0, "$NetBSD: zlcd.c,v 1.3.2.4 2007/09/03 14:31:42 yamt Exp $"); 47 1.3.2.2 yamt 48 1.3.2.2 yamt #include <sys/param.h> 49 1.3.2.2 yamt #include <sys/systm.h> 50 1.3.2.2 yamt #include <sys/conf.h> 51 1.3.2.2 yamt #include <sys/uio.h> 52 1.3.2.2 yamt #include <sys/malloc.h> 53 1.3.2.2 yamt 54 1.3.2.2 yamt #include <dev/cons.h> 55 1.3.2.2 yamt #include <dev/wscons/wsconsio.h> 56 1.3.2.2 yamt #include <dev/wscons/wsdisplayvar.h> 57 1.3.2.2 yamt #include <dev/wscons/wscons_callbacks.h> 58 1.3.2.2 yamt 59 1.3.2.4 yamt #include <dev/hpc/hpcfbio.h> 60 1.3.2.4 yamt 61 1.3.2.2 yamt #include <machine/bus.h> 62 1.3.2.2 yamt #include <arm/xscale/pxa2x0var.h> 63 1.3.2.2 yamt #include <arm/xscale/pxa2x0reg.h> 64 1.3.2.2 yamt #include <arm/xscale/pxa2x0_lcd.h> 65 1.3.2.2 yamt 66 1.3.2.2 yamt #include <zaurus/dev/scoopvar.h> 67 1.3.2.2 yamt #include <zaurus/dev/zsspvar.h> 68 1.3.2.2 yamt #include <zaurus/zaurus/zaurus_var.h> 69 1.3.2.2 yamt 70 1.3.2.2 yamt /* 71 1.3.2.2 yamt * wsdisplay glue 72 1.3.2.2 yamt */ 73 1.3.2.2 yamt static struct pxa2x0_wsscreen_descr lcd_std_screen = { 74 1.3.2.2 yamt .c = { 75 1.3.2.2 yamt .name = "std", 76 1.3.2.2 yamt .textops = &pxa2x0_lcd_emulops, 77 1.3.2.2 yamt .fontwidth = 8, 78 1.3.2.2 yamt .fontheight = 16, 79 1.3.2.2 yamt .capabilities = WSSCREEN_WSCOLORS, 80 1.3.2.2 yamt }, 81 1.3.2.2 yamt .depth = 16, /* bits per pixel */ 82 1.3.2.3 yamt .flags = RI_ROTATE_CW, /* quarter clockwise rotation */ 83 1.3.2.2 yamt }; 84 1.3.2.2 yamt 85 1.3.2.2 yamt static const struct wsscreen_descr *lcd_scr_descr[] = { 86 1.3.2.2 yamt &lcd_std_screen.c 87 1.3.2.2 yamt }; 88 1.3.2.2 yamt 89 1.3.2.2 yamt static const struct wsscreen_list lcd_screen_list = { 90 1.3.2.2 yamt .nscreens = __arraycount(lcd_scr_descr), 91 1.3.2.2 yamt .screens = lcd_scr_descr, 92 1.3.2.2 yamt }; 93 1.3.2.2 yamt 94 1.3.2.4 yamt static int lcd_ioctl(void *, void *, u_long, void *, int, struct lwp *); 95 1.3.2.2 yamt static int lcd_param(struct pxa2x0_lcd_softc *, u_long, 96 1.3.2.2 yamt struct wsdisplay_param *); 97 1.3.2.2 yamt static int lcd_show_screen(void *, void *, int, 98 1.3.2.2 yamt void (*)(void *, int, int), void *); 99 1.3.2.2 yamt 100 1.3.2.2 yamt struct wsdisplay_accessops lcd_accessops = { 101 1.3.2.2 yamt lcd_ioctl, 102 1.3.2.2 yamt pxa2x0_lcd_mmap, 103 1.3.2.2 yamt pxa2x0_lcd_alloc_screen, 104 1.3.2.2 yamt pxa2x0_lcd_free_screen, 105 1.3.2.2 yamt lcd_show_screen, 106 1.3.2.2 yamt NULL, 107 1.3.2.2 yamt NULL, 108 1.3.2.2 yamt NULL, 109 1.3.2.2 yamt }; 110 1.3.2.2 yamt 111 1.3.2.2 yamt #define CURRENT_DISPLAY &sharp_zaurus_C3000 112 1.3.2.2 yamt 113 1.3.2.2 yamt const struct lcd_panel_geometry sharp_zaurus_C3000 = 114 1.3.2.2 yamt { 115 1.3.2.2 yamt 480, /* Width */ 116 1.3.2.2 yamt 640, /* Height */ 117 1.3.2.2 yamt 0, /* No extra lines */ 118 1.3.2.2 yamt 119 1.3.2.2 yamt LCDPANEL_ACTIVE | LCDPANEL_VSP | LCDPANEL_HSP, 120 1.3.2.2 yamt 1, /* clock divider */ 121 1.3.2.2 yamt 0, /* AC bias pin freq */ 122 1.3.2.2 yamt 123 1.3.2.2 yamt 0x28, /* horizontal sync pulse width */ 124 1.3.2.2 yamt 0x2e, /* BLW */ 125 1.3.2.2 yamt 0x7d, /* ELW */ 126 1.3.2.2 yamt 127 1.3.2.2 yamt 2, /* vertical sync pulse width */ 128 1.3.2.2 yamt 1, /* BFW */ 129 1.3.2.2 yamt 0, /* EFW */ 130 1.3.2.2 yamt }; 131 1.3.2.2 yamt 132 1.3.2.2 yamt struct sharp_lcd_backlight { 133 1.3.2.2 yamt int duty; /* LZ9JG18 DAC value */ 134 1.3.2.2 yamt int cont; /* BACKLIGHT_CONT signal */ 135 1.3.2.2 yamt int on; /* BACKLIGHT_ON signal */ 136 1.3.2.2 yamt }; 137 1.3.2.2 yamt 138 1.3.2.2 yamt #define CURRENT_BACKLIGHT sharp_zaurus_C3000_bl 139 1.3.2.2 yamt 140 1.3.2.2 yamt const struct sharp_lcd_backlight sharp_zaurus_C3000_bl[] = { 141 1.3.2.2 yamt { 0x00, 0, 0 }, /* 0: Off */ 142 1.3.2.2 yamt { 0x00, 0, 1 }, /* 1: 0% */ 143 1.3.2.2 yamt { 0x01, 0, 1 }, /* 2: 20% */ 144 1.3.2.2 yamt { 0x07, 0, 1 }, /* 3: 40% */ 145 1.3.2.2 yamt { 0x01, 1, 1 }, /* 4: 60% */ 146 1.3.2.2 yamt { 0x07, 1, 1 }, /* 5: 80% */ 147 1.3.2.2 yamt { 0x11, 1, 1 }, /* 6: 100% */ 148 1.3.2.2 yamt { -1, -1, -1 }, /* 7: Invalid */ 149 1.3.2.2 yamt }; 150 1.3.2.2 yamt 151 1.3.2.2 yamt static int lcd_match(struct device *, struct cfdata *, void *); 152 1.3.2.2 yamt static void lcd_attach(struct device *, struct device *, void *); 153 1.3.2.2 yamt 154 1.3.2.2 yamt CFATTACH_DECL(zlcd, sizeof(struct pxa2x0_lcd_softc), 155 1.3.2.2 yamt lcd_match, lcd_attach, NULL, NULL); 156 1.3.2.2 yamt 157 1.3.2.2 yamt void lcd_cnattach(void); 158 1.3.2.2 yamt int lcd_max_brightness(void); 159 1.3.2.2 yamt int lcd_get_brightness(void); 160 1.3.2.2 yamt void lcd_set_brightness(int); 161 1.3.2.2 yamt void lcd_set_brightness_internal(int); 162 1.3.2.2 yamt int lcd_get_backlight(void); 163 1.3.2.2 yamt void lcd_set_backlight(int); 164 1.3.2.2 yamt void lcd_blank(int); 165 1.3.2.2 yamt void lcd_power(int, void *); 166 1.3.2.2 yamt 167 1.3.2.2 yamt static int 168 1.3.2.2 yamt lcd_match(struct device *parent, struct cfdata *cf, void *aux) 169 1.3.2.2 yamt { 170 1.3.2.2 yamt 171 1.3.2.2 yamt return 1; 172 1.3.2.2 yamt } 173 1.3.2.2 yamt 174 1.3.2.2 yamt static void 175 1.3.2.2 yamt lcd_attach(struct device *parent, struct device *self, void *aux) 176 1.3.2.2 yamt { 177 1.3.2.2 yamt struct pxa2x0_lcd_softc *sc = (struct pxa2x0_lcd_softc *)self; 178 1.3.2.2 yamt struct wsemuldisplaydev_attach_args aa; 179 1.3.2.2 yamt 180 1.3.2.2 yamt pxa2x0_lcd_attach_sub(sc, aux, CURRENT_DISPLAY); 181 1.3.2.2 yamt 182 1.3.2.2 yamt aa.console = glass_console; 183 1.3.2.2 yamt aa.scrdata = &lcd_screen_list; 184 1.3.2.2 yamt aa.accessops = &lcd_accessops; 185 1.3.2.2 yamt aa.accesscookie = sc; 186 1.3.2.2 yamt 187 1.3.2.2 yamt (void) config_found(self, &aa, wsemuldisplaydevprint); 188 1.3.2.2 yamt 189 1.3.2.2 yamt /* Start with approximately 40% of full brightness. */ 190 1.3.2.2 yamt lcd_set_brightness(3); 191 1.3.2.2 yamt 192 1.3.2.2 yamt (void) powerhook_establish(sc->dev.dv_xname, lcd_power, sc); 193 1.3.2.2 yamt } 194 1.3.2.2 yamt 195 1.3.2.2 yamt void 196 1.3.2.2 yamt lcd_cnattach(void) 197 1.3.2.2 yamt { 198 1.3.2.2 yamt 199 1.3.2.2 yamt pxa2x0_lcd_cnattach(&lcd_std_screen, CURRENT_DISPLAY); 200 1.3.2.2 yamt } 201 1.3.2.2 yamt 202 1.3.2.2 yamt /* 203 1.3.2.2 yamt * wsdisplay accessops overrides 204 1.3.2.2 yamt */ 205 1.3.2.2 yamt static int 206 1.3.2.4 yamt lcd_ioctl(void *v, void *vs, u_long cmd, void *data, int flag, struct lwp *l) 207 1.3.2.2 yamt { 208 1.3.2.2 yamt struct pxa2x0_lcd_softc *sc = (struct pxa2x0_lcd_softc *)v; 209 1.3.2.4 yamt struct hpcfb_fbconf *fbconf; 210 1.3.2.4 yamt struct hpcfb_dspconf *dspconf; 211 1.3.2.2 yamt int res = EINVAL; 212 1.3.2.2 yamt 213 1.3.2.2 yamt switch (cmd) { 214 1.3.2.2 yamt case WSDISPLAYIO_GETPARAM: 215 1.3.2.2 yamt case WSDISPLAYIO_SETPARAM: 216 1.3.2.2 yamt res = lcd_param(sc, cmd, (struct wsdisplay_param *)data); 217 1.3.2.2 yamt break; 218 1.3.2.4 yamt 219 1.3.2.4 yamt case HPCFBIO_GCONF: 220 1.3.2.4 yamt fbconf = (struct hpcfb_fbconf *)data; 221 1.3.2.4 yamt if (fbconf->hf_conf_index != 0 && 222 1.3.2.4 yamt fbconf->hf_conf_index != HPCFB_CURRENT_CONFIG) { 223 1.3.2.4 yamt break; 224 1.3.2.4 yamt } 225 1.3.2.4 yamt 226 1.3.2.4 yamt fbconf->hf_conf_index = 0; 227 1.3.2.4 yamt fbconf->hf_nconfs = 1; 228 1.3.2.4 yamt fbconf->hf_class = HPCFB_CLASS_RGBCOLOR; 229 1.3.2.4 yamt strlcpy(fbconf->hf_name, "Sharp Zaurus frame buffer", 230 1.3.2.4 yamt sizeof(fbconf->hf_name)); 231 1.3.2.4 yamt strlcpy(fbconf->hf_conf_name, "default", 232 1.3.2.4 yamt sizeof(fbconf->hf_conf_name)); 233 1.3.2.4 yamt fbconf->hf_width = sc->geometry->panel_width; 234 1.3.2.4 yamt fbconf->hf_height = sc->geometry->panel_height; 235 1.3.2.4 yamt fbconf->hf_baseaddr = (u_long)sc->active->buf_va; 236 1.3.2.4 yamt fbconf->hf_offset = 0; 237 1.3.2.4 yamt fbconf->hf_bytes_per_line = sc->geometry->panel_width * 238 1.3.2.4 yamt sc->active->depth / 8; 239 1.3.2.4 yamt fbconf->hf_nplanes = 1; 240 1.3.2.4 yamt fbconf->hf_bytes_per_plane = sc->geometry->panel_width * 241 1.3.2.4 yamt sc->geometry->panel_height * sc->active->depth / 8; 242 1.3.2.4 yamt fbconf->hf_pack_width = sc->active->depth; 243 1.3.2.4 yamt fbconf->hf_pixels_per_pack = 1; 244 1.3.2.4 yamt fbconf->hf_pixel_width = sc->active->depth; 245 1.3.2.4 yamt fbconf->hf_access_flags = (0 246 1.3.2.4 yamt | HPCFB_ACCESS_BYTE 247 1.3.2.4 yamt | HPCFB_ACCESS_WORD 248 1.3.2.4 yamt | HPCFB_ACCESS_DWORD); 249 1.3.2.4 yamt fbconf->hf_order_flags = 0; 250 1.3.2.4 yamt fbconf->hf_reg_offset = 0; 251 1.3.2.4 yamt 252 1.3.2.4 yamt fbconf->hf_class_data_length = sizeof(struct hf_rgb_tag); 253 1.3.2.4 yamt fbconf->hf_u.hf_rgb.hf_flags = 0; 254 1.3.2.4 yamt fbconf->hf_u.hf_rgb.hf_red_width = 5; 255 1.3.2.4 yamt fbconf->hf_u.hf_rgb.hf_red_shift = 11; 256 1.3.2.4 yamt fbconf->hf_u.hf_rgb.hf_green_width = 6; 257 1.3.2.4 yamt fbconf->hf_u.hf_rgb.hf_green_shift = 5; 258 1.3.2.4 yamt fbconf->hf_u.hf_rgb.hf_blue_width = 5; 259 1.3.2.4 yamt fbconf->hf_u.hf_rgb.hf_blue_shift = 0; 260 1.3.2.4 yamt fbconf->hf_u.hf_rgb.hf_alpha_width = 0; 261 1.3.2.4 yamt fbconf->hf_u.hf_rgb.hf_alpha_shift = 0; 262 1.3.2.4 yamt 263 1.3.2.4 yamt fbconf->hf_ext_size = 0; 264 1.3.2.4 yamt fbconf->hf_ext_data = NULL; 265 1.3.2.4 yamt 266 1.3.2.4 yamt res = 0; 267 1.3.2.4 yamt break; 268 1.3.2.4 yamt 269 1.3.2.4 yamt case HPCFBIO_SCONF: 270 1.3.2.4 yamt fbconf = (struct hpcfb_fbconf *)data; 271 1.3.2.4 yamt if (fbconf->hf_conf_index != 0 && 272 1.3.2.4 yamt fbconf->hf_conf_index != HPCFB_CURRENT_CONFIG) { 273 1.3.2.4 yamt break; 274 1.3.2.4 yamt } 275 1.3.2.4 yamt /* nothing to do because we have only one configuration */ 276 1.3.2.4 yamt res = 0; 277 1.3.2.4 yamt break; 278 1.3.2.4 yamt 279 1.3.2.4 yamt case HPCFBIO_GDSPCONF: 280 1.3.2.4 yamt dspconf = (struct hpcfb_dspconf *)data; 281 1.3.2.4 yamt if ((dspconf->hd_unit_index != 0 && 282 1.3.2.4 yamt dspconf->hd_unit_index != HPCFB_CURRENT_UNIT) || 283 1.3.2.4 yamt (dspconf->hd_conf_index != 0 && 284 1.3.2.4 yamt dspconf->hd_conf_index != HPCFB_CURRENT_CONFIG)) { 285 1.3.2.4 yamt break; 286 1.3.2.4 yamt } 287 1.3.2.4 yamt 288 1.3.2.4 yamt dspconf->hd_unit_index = 0; 289 1.3.2.4 yamt dspconf->hd_nunits = 1; 290 1.3.2.4 yamt dspconf->hd_class = HPCFB_DSP_CLASS_COLORLCD; 291 1.3.2.4 yamt strlcpy(dspconf->hd_name, "Sharp Zaurus LCD", 292 1.3.2.4 yamt sizeof(dspconf->hd_name)); 293 1.3.2.4 yamt dspconf->hd_op_flags = 0; 294 1.3.2.4 yamt dspconf->hd_conf_index = 0; 295 1.3.2.4 yamt dspconf->hd_nconfs = 1; 296 1.3.2.4 yamt strlcpy(dspconf->hd_conf_name, "default", 297 1.3.2.4 yamt sizeof(dspconf->hd_conf_name)); 298 1.3.2.4 yamt dspconf->hd_width = sc->geometry->panel_width; 299 1.3.2.4 yamt dspconf->hd_height = sc->geometry->panel_height; 300 1.3.2.4 yamt dspconf->hd_xdpi = HPCFB_DSP_DPI_UNKNOWN; 301 1.3.2.4 yamt dspconf->hd_ydpi = HPCFB_DSP_DPI_UNKNOWN; 302 1.3.2.4 yamt 303 1.3.2.4 yamt res = 0; 304 1.3.2.4 yamt break; 305 1.3.2.4 yamt 306 1.3.2.4 yamt case HPCFBIO_SDSPCONF: 307 1.3.2.4 yamt dspconf = (struct hpcfb_dspconf *)data; 308 1.3.2.4 yamt if ((dspconf->hd_unit_index != 0 && 309 1.3.2.4 yamt dspconf->hd_unit_index != HPCFB_CURRENT_UNIT) || 310 1.3.2.4 yamt (dspconf->hd_conf_index != 0 && 311 1.3.2.4 yamt dspconf->hd_conf_index != HPCFB_CURRENT_CONFIG)) { 312 1.3.2.4 yamt break; 313 1.3.2.4 yamt } 314 1.3.2.4 yamt /* 315 1.3.2.4 yamt * nothing to do 316 1.3.2.4 yamt * because we have only one unit and one configuration 317 1.3.2.4 yamt */ 318 1.3.2.4 yamt res = 0; 319 1.3.2.4 yamt break; 320 1.3.2.4 yamt 321 1.3.2.4 yamt case HPCFBIO_GOP: 322 1.3.2.4 yamt case HPCFBIO_SOP: 323 1.3.2.4 yamt /* curently not implemented... */ 324 1.3.2.4 yamt break; 325 1.3.2.2 yamt } 326 1.3.2.2 yamt 327 1.3.2.2 yamt if (res == EINVAL) 328 1.3.2.2 yamt res = pxa2x0_lcd_ioctl(v, vs, cmd, data, flag, l); 329 1.3.2.2 yamt return res; 330 1.3.2.2 yamt } 331 1.3.2.2 yamt 332 1.3.2.2 yamt static int 333 1.3.2.2 yamt lcd_show_screen(void *v, void *cookie, int waitok, 334 1.3.2.2 yamt void (*cb_func)(void *, int, int), void *cb_arg) 335 1.3.2.2 yamt { 336 1.3.2.2 yamt int error; 337 1.3.2.2 yamt 338 1.3.2.2 yamt error = pxa2x0_lcd_show_screen(v, cookie, waitok, cb_func, cb_arg); 339 1.3.2.2 yamt if (error) 340 1.3.2.2 yamt return (error); 341 1.3.2.2 yamt 342 1.3.2.2 yamt /* Turn on LCD */ 343 1.3.2.2 yamt lcd_set_brightness(lcd_get_brightness()); 344 1.3.2.2 yamt 345 1.3.2.2 yamt return 0; 346 1.3.2.2 yamt } 347 1.3.2.2 yamt 348 1.3.2.2 yamt /* 349 1.3.2.2 yamt * wsdisplay I/O controls 350 1.3.2.2 yamt */ 351 1.3.2.2 yamt static int 352 1.3.2.4 yamt lcd_param(struct pxa2x0_lcd_softc *sc, u_long cmd, struct wsdisplay_param *dp) 353 1.3.2.2 yamt { 354 1.3.2.2 yamt int res = EINVAL; 355 1.3.2.2 yamt 356 1.3.2.2 yamt switch (dp->param) { 357 1.3.2.2 yamt case WSDISPLAYIO_PARAM_BACKLIGHT: 358 1.3.2.2 yamt if (cmd == WSDISPLAYIO_GETPARAM) { 359 1.3.2.2 yamt dp->min = 0; 360 1.3.2.2 yamt dp->max = 1; 361 1.3.2.2 yamt dp->curval = lcd_get_backlight(); 362 1.3.2.2 yamt res = 0; 363 1.3.2.2 yamt } else if (cmd == WSDISPLAYIO_SETPARAM) { 364 1.3.2.2 yamt lcd_set_backlight(dp->curval); 365 1.3.2.2 yamt res = 0; 366 1.3.2.2 yamt } 367 1.3.2.2 yamt break; 368 1.3.2.2 yamt 369 1.3.2.2 yamt case WSDISPLAYIO_PARAM_CONTRAST: 370 1.3.2.2 yamt /* unsupported */ 371 1.3.2.2 yamt res = ENOTTY; 372 1.3.2.2 yamt break; 373 1.3.2.2 yamt 374 1.3.2.2 yamt case WSDISPLAYIO_PARAM_BRIGHTNESS: 375 1.3.2.2 yamt if (cmd == WSDISPLAYIO_GETPARAM) { 376 1.3.2.2 yamt dp->min = 1; 377 1.3.2.2 yamt dp->max = lcd_max_brightness(); 378 1.3.2.2 yamt dp->curval = lcd_get_brightness(); 379 1.3.2.2 yamt res = 0; 380 1.3.2.2 yamt } else if (cmd == WSDISPLAYIO_SETPARAM) { 381 1.3.2.2 yamt lcd_set_brightness(dp->curval); 382 1.3.2.2 yamt res = 0; 383 1.3.2.2 yamt } 384 1.3.2.2 yamt break; 385 1.3.2.2 yamt } 386 1.3.2.2 yamt 387 1.3.2.2 yamt return res; 388 1.3.2.2 yamt } 389 1.3.2.2 yamt 390 1.3.2.2 yamt /* 391 1.3.2.2 yamt * LCD backlight 392 1.3.2.2 yamt */ 393 1.3.2.2 yamt 394 1.3.2.2 yamt static int lcdbrightnesscurval = 1; 395 1.3.2.2 yamt static int lcdislit = 1; 396 1.3.2.2 yamt static int lcdisblank = 0; 397 1.3.2.2 yamt 398 1.3.2.2 yamt int 399 1.3.2.2 yamt lcd_max_brightness(void) 400 1.3.2.2 yamt { 401 1.3.2.2 yamt int i; 402 1.3.2.2 yamt 403 1.3.2.2 yamt for (i = 0; CURRENT_BACKLIGHT[i].duty != -1; i++) 404 1.3.2.2 yamt continue; 405 1.3.2.2 yamt return i - 1; 406 1.3.2.2 yamt } 407 1.3.2.2 yamt 408 1.3.2.2 yamt int 409 1.3.2.2 yamt lcd_get_brightness(void) 410 1.3.2.2 yamt { 411 1.3.2.2 yamt 412 1.3.2.2 yamt return lcdbrightnesscurval; 413 1.3.2.2 yamt } 414 1.3.2.2 yamt 415 1.3.2.2 yamt void 416 1.3.2.2 yamt lcd_set_brightness(int newval) 417 1.3.2.2 yamt { 418 1.3.2.2 yamt int maxval; 419 1.3.2.2 yamt 420 1.3.2.2 yamt maxval = lcd_max_brightness(); 421 1.3.2.2 yamt if (newval < 0) 422 1.3.2.2 yamt newval = 0; 423 1.3.2.2 yamt else if (newval > maxval) 424 1.3.2.2 yamt newval = maxval; 425 1.3.2.2 yamt 426 1.3.2.2 yamt if (lcd_get_backlight() && !lcdisblank) 427 1.3.2.2 yamt lcd_set_brightness_internal(newval); 428 1.3.2.2 yamt 429 1.3.2.2 yamt if (newval > 0) 430 1.3.2.2 yamt lcdbrightnesscurval = newval; 431 1.3.2.2 yamt } 432 1.3.2.2 yamt 433 1.3.2.2 yamt void 434 1.3.2.2 yamt lcd_set_brightness_internal(int newval) 435 1.3.2.2 yamt { 436 1.3.2.2 yamt static int curval = 1; 437 1.3.2.2 yamt int i; 438 1.3.2.2 yamt 439 1.3.2.2 yamt /* 440 1.3.2.2 yamt * It appears that the C3000 backlight can draw too much power if we 441 1.3.2.2 yamt * switch it from a low to a high brightness. Increasing brightness 442 1.3.2.2 yamt * in steps avoids this issue. 443 1.3.2.2 yamt */ 444 1.3.2.2 yamt if (newval > curval) { 445 1.3.2.2 yamt for (i = curval + 1; i <= newval; i++) { 446 1.3.2.2 yamt (void)zssp_ic_send(ZSSP_IC_LZ9JG18, 447 1.3.2.2 yamt CURRENT_BACKLIGHT[i].duty); 448 1.3.2.2 yamt scoop_set_backlight(CURRENT_BACKLIGHT[i].on, 449 1.3.2.2 yamt CURRENT_BACKLIGHT[i].cont); 450 1.3.2.2 yamt delay(5000); 451 1.3.2.2 yamt } 452 1.3.2.2 yamt } else { 453 1.3.2.2 yamt (void)zssp_ic_send(ZSSP_IC_LZ9JG18, 454 1.3.2.2 yamt CURRENT_BACKLIGHT[newval].duty); 455 1.3.2.2 yamt scoop_set_backlight(CURRENT_BACKLIGHT[newval].on, 456 1.3.2.2 yamt CURRENT_BACKLIGHT[newval].cont); 457 1.3.2.2 yamt } 458 1.3.2.2 yamt 459 1.3.2.2 yamt curval = newval; 460 1.3.2.2 yamt } 461 1.3.2.2 yamt 462 1.3.2.2 yamt int 463 1.3.2.2 yamt lcd_get_backlight(void) 464 1.3.2.2 yamt { 465 1.3.2.2 yamt 466 1.3.2.2 yamt return lcdislit; 467 1.3.2.2 yamt } 468 1.3.2.2 yamt 469 1.3.2.2 yamt void 470 1.3.2.2 yamt lcd_set_backlight(int onoff) 471 1.3.2.2 yamt { 472 1.3.2.2 yamt 473 1.3.2.2 yamt if (!onoff) { 474 1.3.2.2 yamt lcd_set_brightness(0); 475 1.3.2.2 yamt lcdislit = 0; 476 1.3.2.2 yamt } else { 477 1.3.2.2 yamt lcdislit = 1; 478 1.3.2.2 yamt lcd_set_brightness(lcd_get_brightness()); 479 1.3.2.2 yamt } 480 1.3.2.2 yamt } 481 1.3.2.2 yamt 482 1.3.2.2 yamt void 483 1.3.2.2 yamt lcd_blank(int blank) 484 1.3.2.2 yamt { 485 1.3.2.2 yamt 486 1.3.2.2 yamt if (blank) { 487 1.3.2.2 yamt lcd_set_brightness(0); 488 1.3.2.2 yamt lcdisblank = 1; 489 1.3.2.2 yamt } else { 490 1.3.2.2 yamt lcdisblank = 0; 491 1.3.2.2 yamt lcd_set_brightness(lcd_get_brightness()); 492 1.3.2.2 yamt } 493 1.3.2.2 yamt } 494 1.3.2.2 yamt 495 1.3.2.2 yamt void 496 1.3.2.2 yamt lcd_power(int why, void *v) 497 1.3.2.2 yamt { 498 1.3.2.2 yamt 499 1.3.2.2 yamt switch (why) { 500 1.3.2.2 yamt case PWR_SUSPEND: 501 1.3.2.2 yamt case PWR_STANDBY: 502 1.3.2.2 yamt lcd_set_brightness(0); 503 1.3.2.2 yamt pxa2x0_lcd_power(why, v); 504 1.3.2.2 yamt break; 505 1.3.2.2 yamt 506 1.3.2.2 yamt case PWR_RESUME: 507 1.3.2.2 yamt pxa2x0_lcd_power(why, v); 508 1.3.2.2 yamt lcd_set_brightness(lcd_get_brightness()); 509 1.3.2.2 yamt break; 510 1.3.2.2 yamt } 511 1.3.2.2 yamt } 512
Indexes created Thu Oct 23 22:10:10 GMT 2025