g42xxeb_lcd.c revision 1.8.44.2
1 /* $NetBSD: g42xxeb_lcd.c,v 1.8.44.2 2010/08/11 22:51:51 yamt Exp $ */ 2 3 /*- 4 * Copyright (c) 2001, 2002, 2005 Genetec corp. 5 * All rights reserved. 6 * 7 * LCD driver for Genetec G4250EB-X002. 8 * Written by Hiroyuki Bessho for Genetec corp. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of The NetBSD Foundation nor the names of its 19 * contributors may be used to endorse or promote products derived 20 * from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 23 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 24 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 25 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 26 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 32 * POSSIBILITY OF SUCH DAMAGE. 33 */ 34 #include "opt_g42xxlcd.h" 35 36 #include <sys/param.h> 37 #include <sys/systm.h> 38 #include <sys/conf.h> 39 #include <sys/uio.h> 40 #include <sys/malloc.h> 41 42 #include <dev/cons.h> 43 #include <dev/wscons/wsconsio.h> 44 #include <dev/wscons/wsdisplayvar.h> 45 #include <dev/wscons/wscons_callbacks.h> 46 47 #include <machine/bus.h> 48 #include <arm/sa11x0/sa11x0_var.h> 49 #include <arm/xscale/pxa2x0var.h> 50 #include <arm/xscale/pxa2x0reg.h> 51 #include <arm/xscale/pxa2x0_lcd.h> 52 53 #include <arch/evbarm/g42xxeb/g42xxeb_reg.h> 54 #include <arch/evbarm/g42xxeb/g42xxeb_var.h> 55 56 #include "wsdisplay.h" 57 #include "ioconf.h" 58 59 int lcd_match(device_t, cfdata_t, void *); 60 void lcd_attach(device_t, device_t, void *); 61 int lcdintr(void *); 62 63 #if NWSDISPLAY > 0 64 65 /* 66 * wsdisplay glue 67 */ 68 struct pxa2x0_wsscreen_descr lcd_bpp16_screen = { 69 { 70 "bpp16", 0, 0, 71 &pxa2x0_lcd_emulops, 72 0, 0, 73 WSSCREEN_WSCOLORS, 74 }, 75 16 /* bits per pixel */ 76 }, lcd_bpp8_screen = { 77 { 78 "bpp8", 0, 0, 79 &pxa2x0_lcd_emulops, 80 0, 0, 81 WSSCREEN_WSCOLORS, 82 }, 83 8 /* bits per pixel */ 84 }, lcd_bpp4_screen = { 85 { 86 "bpp4", 0, 0, 87 &pxa2x0_lcd_emulops, 88 0, 0, 89 WSSCREEN_WSCOLORS, 90 }, 91 4 /* bits per pixel */ 92 }; 93 94 95 static const struct wsscreen_descr *lcd_scr_descr[] = { 96 &lcd_bpp4_screen.c, 97 &lcd_bpp8_screen.c, 98 &lcd_bpp16_screen.c, 99 }; 100 101 const struct wsscreen_list lcd_screen_list = { 102 sizeof lcd_scr_descr / sizeof lcd_scr_descr[0], 103 lcd_scr_descr 104 }; 105 106 int lcd_ioctl(void *, void *, u_long, void *, int, struct lwp *); 107 108 int lcd_show_screen(void *, void *, int, 109 void (*)(void *, int, int), void *); 110 111 const struct wsdisplay_accessops lcd_accessops = { 112 lcd_ioctl, 113 pxa2x0_lcd_mmap, 114 pxa2x0_lcd_alloc_screen, 115 pxa2x0_lcd_free_screen, 116 lcd_show_screen, 117 NULL, /* load_font */ 118 }; 119 120 #else 121 /* 122 * Interface to LCD framebuffer without wscons 123 */ 124 dev_type_open(lcdopen); 125 dev_type_close(lcdclose); 126 dev_type_ioctl(lcdioctl); 127 dev_type_mmap(lcdmmap); 128 const struct cdevsw lcd_cdevsw = { 129 lcdopen, lcdclose, noread, nowrite, 130 lcdioctl, nostop, notty, nopoll, lcdmmap, nokqfilter, D_TTY 131 }; 132 133 #endif 134 135 CFATTACH_DECL_NEW(lcd_obio, sizeof (struct pxa2x0_lcd_softc), 136 lcd_match, lcd_attach, NULL, NULL); 137 138 int 139 lcd_match( device_t parent, cfdata_t cf, void *aux ) 140 { 141 return 1; 142 } 143 144 #ifdef G4250_LCD_NEC_NL3224BC35 145 /* NEC's QVGA LCD */ 146 static const struct lcd_panel_geometry nec_NL3224BC35 = 147 { 148 320, /* Width */ 149 240, /* Height */ 150 0, /* No extra lines */ 151 152 LCDPANEL_SINGLE|LCDPANEL_ACTIVE|LCDPANEL_PCP| 153 LCDPANEL_VSP|LCDPANEL_HSP, 154 7, /* clock divider, 6.25MHz at 100MHz */ 155 0xff, /* AC bias pin freq */ 156 157 6, /* horizontal sync pulse width */ 158 70, /* BLW */ 159 7, /* ELW */ 160 161 10, /* vertical sync pulse width */ 162 11, /* BFW */ 163 1, /* EFW */ 164 }; 165 #endif 166 167 #ifdef G4250_LCD_TOSHIBA_LTM035 168 const struct lcd_panel_geometry toshiba_LTM035 = 169 { 170 240, /* Width */ 171 320, /* Height */ 172 0, /* No extra lines */ 173 174 LCDPANEL_SINGLE|LCDPANEL_ACTIVE| /* LCDPANEL_PCP| */ 175 LCDPANEL_VSP|LCDPANEL_HSP, 176 11, /* clock divider, 4.5 MHz at 100 MHz */ 177 /* required: 4.28..4.7 MHz */ 178 0xff, /* AC bias pin freq */ 179 180 4, /* horizontal sync pulse width */ 181 8, /* BLW (back porch) */ 182 4, /* ELW (front porch) */ 183 184 2, /* vertical sync pulse width */ 185 2, /* BFW (back porch) */ 186 3, /* EFW (front porch) */ 187 188 }; 189 #endif /* G4250_LCD_TOSHIBA_LTM035 */ 190 191 void lcd_attach(device_t parent, device_t self, void *aux) 192 { 193 struct pxa2x0_lcd_softc *sc = device_private(self); 194 struct pxaip_attach_args paa; 195 struct obio_attach_args *oba = aux; 196 197 sc->dev = self; 198 199 paa.pxa_name = "obio"; 200 paa.pxa_iot = oba->oba_iot; 201 paa.pxa_addr = oba->oba_addr; 202 paa.pxa_size = 0; /* XXX */ 203 paa.pxa_intr = oba->oba_intr; 204 205 #ifdef G4250_LCD_TOSHIBA_LTM035 206 # define PANEL toshiba_LTM035 207 #else 208 # define PANEL nec_NL3224BC35 209 #endif 210 211 pxa2x0_lcd_attach_sub(sc, &paa, &PANEL); 212 213 214 #if NWSDISPLAY > 0 215 216 { 217 struct wsemuldisplaydev_attach_args aa; 218 219 /* make wsdisplay screen list */ 220 pxa2x0_lcd_setup_wsscreen(&lcd_bpp16_screen, &PANEL, NULL); 221 pxa2x0_lcd_setup_wsscreen(&lcd_bpp8_screen, &PANEL, NULL); 222 pxa2x0_lcd_setup_wsscreen(&lcd_bpp4_screen, &PANEL, NULL); 223 224 aa.console = 0; 225 aa.scrdata = &lcd_screen_list; 226 aa.accessops = &lcd_accessops; 227 aa.accesscookie = sc; 228 229 (void) config_found(self, &aa, wsemuldisplaydevprint); 230 } 231 #else 232 { 233 struct pxa2x0_lcd_screen *screen; 234 int error; 235 236 error = pxa2x0_lcd_new_screen( sc, 16, &screen ); 237 if (error == 0) { 238 sc->active = screen; 239 pxa2x0_lcd_start_dma(sc, screen); 240 } 241 } 242 #endif 243 244 #undef PANEL 245 246 } 247 248 #if NWSDISPLAY > 0 249 250 int 251 lcd_ioctl(void *v, void *vs, u_long cmd, void *data, int flag, struct lwp *l) 252 { 253 struct pxa2x0_lcd_softc *sc = v; 254 struct obio_softc *osc = 255 device_private(device_parent(sc->dev)); 256 uint16_t reg; 257 258 switch (cmd) { 259 case WSDISPLAYIO_SVIDEO: 260 reg = bus_space_read_2(osc->sc_iot, osc->sc_obioreg_ioh, 261 G42XXEB_LCDCTL); 262 if (*(int *)data == WSDISPLAYIO_VIDEO_ON) 263 reg |= LCDCTL_BL_ON; 264 else 265 reg &= ~LCDCTL_BL_ON; 266 bus_space_write_2(osc->sc_iot, osc->sc_obioreg_ioh, 267 G42XXEB_LCDCTL, reg); 268 bus_space_write_1(osc->sc_iot, osc->sc_obioreg_ioh, 269 G42XXEB_LED, reg); 270 printf("LCD control: %x\n", reg); 271 break; /* turn on/off LCD controller */ 272 } 273 274 return pxa2x0_lcd_ioctl(v, vs, cmd, data, flag, l); 275 } 276 277 int 278 lcd_show_screen(void *v, void *cookie, int waitok, 279 void (*cb)(void *, int, int), void *cbarg) 280 { 281 struct pxa2x0_lcd_softc *sc = v; 282 struct obio_softc *osc = 283 device_private(device_parent(sc->dev)); 284 uint16_t reg; 285 286 pxa2x0_lcd_show_screen(v,cookie,waitok,cb,cbarg); 287 288 /* Turn on LCD backlight. 289 XXX: with fixed blightness. want new ioctl to set blightness. */ 290 reg = bus_space_read_2(osc->sc_iot, osc->sc_obioreg_ioh, G42XXEB_LCDCTL); 291 bus_space_write_2(osc->sc_iot, osc->sc_obioreg_ioh, G42XXEB_LCDCTL, 292 (reg & ~LCDCTL_BL_PWN) | 0x4000 | LCDCTL_BL_ON); 293 294 return 0; 295 } 296 297 298 299 #else /* NWSDISPLAY==0 */ 300 301 int 302 lcdopen(dev_t dev, int oflags, int devtype, struct lwp *l) 303 { 304 struct pxa2x0_lcd_softc *sc = 305 device_lookup_private(&lcd_cd, minor(dev)); 306 struct obio_softc *osc = 307 device_private(device_parent(sc->dev)); 308 uint16_t reg; 309 310 /* Turn on LCD backlight. 311 XXX: with fixed blightness. want new ioctl to set blightness. */ 312 reg = bus_space_read_2(osc->sc_iot, osc->sc_obioreg_ioh, G42XXEB_LCDCTL); 313 bus_space_write_2(osc->sc_iot, osc->sc_obioreg_ioh, G42XXEB_LCDCTL, 314 (reg & ~LCDCTL_BL_PWN) | 0x4000 | LCDCTL_BL_ON); 315 316 317 return 0; 318 } 319 320 int 321 lcdclose(dev_t dev, int fflag, int devtype, struct lwp *l) 322 { 323 return 0; 324 } 325 326 paddr_t 327 lcdmmap(dev_t dev, off_t offset, int size) 328 { 329 struct pxa2x0_lcd_softc *sc = 330 device_lookup_private(&lcd_cd, minor(dev)); 331 struct pxa2x0_lcd_screen *scr = sc->active; 332 333 return bus_dmamem_mmap( &pxa2x0_bus_dma_tag, scr->segs, scr->nsegs, 334 offset, 0, BUS_DMA_WAITOK|BUS_DMA_COHERENT ); 335 } 336 337 int 338 lcdioctl(dev_t dev, u_long cmd, void *data, 339 int fflag, struct lwp *l) 340 { 341 return EOPNOTSUPP; 342 } 343 344 #endif /* NWSDISPLAY>0 */ 345
Indexes created Mon Oct 27 04:09:48 GMT 2025