sys/arch/evbarm/lubbock/lubbock_lcd.c

   1 /* $NetBSD: lubbock_lcd.c,v 1.9 2009/01/29 12:28:15 nonaka Exp $ */
   2
   3 /*
   4  * Copyright (c) 2002, 2003  Genetec Corporation.  All rights reserved.
   5  * Written by Hiroyuki Bessho for Genetec Corporation.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. The name of Genetec Corporation may not be used to endorse or
  16  *    promote products derived from this software without specific prior
  17  *    written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY GENETEC CORPORATION ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL GENETEC CORPORATION
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 /*
  33  * LCD driver for Intel Lubbock.
  34  *
  35  * Controlling LCD is almost completely done through PXA2X0's
  36  * integrated LCD controller.  Codes for it is arm/xscale/pxa2x0_lcd.c.
  37  *
  38  * Codes in this file provide platform specific things including:
  39  *   LCD on/off switch in on-board PLD register.
  40  *   LCD panel geometry
  41  */
  42 #include <sys/cdefs.h>
  43 __KERNEL_RCSID(0, "$NetBSD: lubbock_lcd.c,v 1.9 2009/01/29 12:28:15 nonaka Exp $");
  44
  45 #include <sys/param.h>
  46 #include <sys/systm.h>
  47 #include <sys/conf.h>
  48 #include <sys/uio.h>
  49 #include <sys/malloc.h>
  50
  51 #include <dev/cons.h>
  52 #include <dev/wscons/wsconsio.h>
  53 #include <dev/wscons/wsdisplayvar.h>
  54 #include <dev/wscons/wscons_callbacks.h>
  55
  56 #include <machine/bus.h>
  57 #include <arm/xscale/pxa2x0var.h>
  58 #include <arm/xscale/pxa2x0reg.h>
  59 #include <arm/xscale/pxa2x0_lcd.h>
  60
  61 #include <arch/evbarm/lubbock/lubbock_reg.h>
  62 #include <arch/evbarm/lubbock/lubbock_var.h>
  63
  64 #include "wsdisplay.h"
  65
  66 int     lcd_match(device_t, cfdata_t, void *);
  67 void    lcd_attach(device_t, device_t, void *);
  68 int     lcdintr(void *);
  69
  70 #if NWSDISPLAY > 0
  71
  72 /*
  73  * wsdisplay glue
  74  */
  75 struct pxa2x0_wsscreen_descr lcd_bpp16_screen = {
  76         {
  77                 "bpp16", 0, 0,
  78                 &pxa2x0_lcd_emulops,
  79                 0, 0,
  80                 WSSCREEN_WSCOLORS,
  81         },
  82         16                              /* bits per pixel */
  83 }, lcd_bpp8_screen = {
  84         {
  85                 "bpp8", 0, 0,
  86                 &pxa2x0_lcd_emulops,
  87                 0, 0,
  88                 WSSCREEN_WSCOLORS,
  89         },
  90         8                               /* bits per pixel */
  91 }, lcd_bpp4_screen = {
  92         {
  93                 "bpp4", 0, 0,
  94                 &pxa2x0_lcd_emulops,
  95                 0, 0,
  96                 WSSCREEN_WSCOLORS,
  97         },
  98         4                               /* bits per pixel */
  99 };
 100
 101
 102 static const struct wsscreen_descr *lcd_scr_descr[] = {
 103 #if 0
 104         /* bpp4 needs a patch to rasops4 */
 105         &lcd_bpp4_screen.c,
 106 #endif
 107         &lcd_bpp8_screen.c,
 108         &lcd_bpp16_screen.c,
 109 };
 110
 111 const struct wsscreen_list lcd_screen_list = {
 112         sizeof lcd_scr_descr / sizeof lcd_scr_descr[0],
 113         lcd_scr_descr
 114 };
 115
 116 int     lcd_ioctl(void *, void *, u_long, void *, int, struct lwp *);
 117
 118 int     lcd_show_screen(void *, void *, int,
 119             void (*)(void *, int, int), void *);
 120
 121 const struct wsdisplay_accessops lcd_accessops = {
 122         lcd_ioctl,
 123         pxa2x0_lcd_mmap,
 124         pxa2x0_lcd_alloc_screen,
 125         pxa2x0_lcd_free_screen,
 126         lcd_show_screen,
 127         NULL, /* load_font */
 128 };
 129
 130 #else
 131 /*
 132  * Interface to LCD framebuffer without wscons
 133  */
 134 dev_type_open(lcdopen);
 135 dev_type_close(lcdclose);
 136 dev_type_ioctl(lcdioctl);
 137 dev_type_mmap(lcdmmap);
 138 const struct cdevsw lcd_cdevsw = {
 139         lcdopen, lcdclose, noread, nowrite,
 140         lcdioctl, nostop, notty, nopoll, lcdmmap, D_TTY
 141 };
 142
 143 #endif
 144
 145 CFATTACH_DECL_NEW(lcd_obio, sizeof (struct pxa2x0_lcd_softc),  lcd_match,
 146     lcd_attach, NULL, NULL);
 147
 148 int
 149 lcd_match( device_t parent, cfdata_t cf, void *aux )
 150 {
 151         return 1;
 152 }
 153
 154 static const struct lcd_panel_geometry sharp_LM8V31 =
 155 {
 156     640,                        /* Width */
 157     480,                        /* Height */
 158     0,                          /* No extra lines */
 159
 160     LCDPANEL_DUAL|LCDPANEL_PASSIVE|LCDPANEL_PCP,
 161     10,                         /* clock divider */
 162     0xff,                       /* AC bias pin freq */
 163
 164     2,                          /* horizontal sync pulse width */
 165     3,                          /* BLW */
 166     3,                          /* ELW */
 167
 168     1,                          /* vertical sync pulse width */
 169     0,                          /* BFW */
 170     0,                          /* EFW */
 171
 172 };
 173
 174 void lcd_attach( device_t parent, device_t self, void *aux )
 175 {
 176         struct pxa2x0_lcd_softc *sc = device_private(self);
 177
 178         sc->dev = self;
 179
 180         pxa2x0_lcd_attach_sub(sc, aux, &sharp_LM8V31);
 181
 182
 183 #if NWSDISPLAY > 0
 184
 185         {
 186                 struct wsemuldisplaydev_attach_args aa;
 187
 188                 /* make wsdisplay screen list */
 189                 pxa2x0_lcd_setup_wsscreen( &lcd_bpp16_screen, &sharp_LM8V31, NULL );
 190                 pxa2x0_lcd_setup_wsscreen( &lcd_bpp8_screen, &sharp_LM8V31, NULL );
 191                 pxa2x0_lcd_setup_wsscreen( &lcd_bpp4_screen, &sharp_LM8V31, NULL );
 192
 193                 aa.console = 0;
 194                 aa.scrdata = &lcd_screen_list;
 195                 aa.accessops = &lcd_accessops;
 196                 aa.accesscookie = sc;
 197
 198                 printf( "\n" );
 199
 200                 (void) config_found(self, &aa, wsemuldisplaydevprint);
 201         }
 202 #else
 203         {
 204                 struct pxa2x0_lcd_screen *screen;
 205                 int error;
 206
 207                 error = pxa2x0_lcd_new_screen( sc, 8, &screen );
 208                 if( error == 0 ){
 209                         sc->active = screen;
 210                         pxa2x0_lcd_start_dma( sc, screen );
 211                 }
 212
 213                 printf( "\n" );
 214         }
 215 #endif
 216
 217 }
 218
 219 #if NWSDISPLAY > 0
 220
 221 int
 222 lcd_ioctl(void *v, void *vs, u_long cmd, void *data, int flag, struct lwp *l)
 223 {
 224         struct pxa2x0_lcd_softc *sc = (struct pxa2x0_lcd_softc *) v;
 225         struct obio_softc *osc = device_private(device_parent(sc->dev));
 226         uint16_t reg;
 227
 228         switch (cmd) {
 229         case WSDISPLAYIO_SVIDEO:
 230                 reg = bus_space_read_2( osc->sc_iot, osc->sc_obioreg_ioh,
 231                     LUBBOCK_MISCWR );
 232                 if( *(int *)data == WSDISPLAYIO_VIDEO_ON )
 233                         reg |= MISCWR_LCDDISP;
 234                 else
 235                         reg &= ~MISCWR_LCDDISP;
 236                 bus_space_write_2( osc->sc_iot, osc->sc_obioreg_ioh,
 237                         LUBBOCK_MISCWR, reg );
 238                 break;                  /* turn on/off LCD controller */
 239         }
 240
 241         return pxa2x0_lcd_ioctl( v, vs, cmd, data, flag, l );
 242 }
 243
 244 int
 245 lcd_show_screen(void *v, void *cookie, int waitok,
 246     void (*cb)(void *, int, int), void *cbarg)
 247 {
 248         struct pxa2x0_lcd_softc *sc = (struct pxa2x0_lcd_softc *) v;
 249         struct obio_softc *osc = device_private(device_parent(sc->dev));
 250
 251         pxa2x0_lcd_show_screen(v,cookie,waitok,cb,cbarg);
 252
 253         /* Turn on LCD */
 254         bus_space_write_4( osc->sc_iot, osc->sc_obioreg_ioh, LUBBOCK_MISCWR,
 255             MISCWR_LCDDISP |
 256             bus_space_read_4( osc->sc_iot, osc->sc_obioreg_ioh, LUBBOCK_MISCWR ) );
 257
 258         return (0);
 259 }
 260
 261
 262
 263 #else  /* NWSDISPLAY==0 */
 264
 265 int
 266 lcdopen( dev_t dev, int oflags, int devtype, struct lwp *l )
 267 {
 268         return 0;
 269 }
 270
 271 int
 272 lcdclose( dev_t dev, int fflag, int devtype, struct lwp *l )
 273 {
 274         return 0;
 275 }
 276
 277 paddr_t
 278 lcdmmap( dev_t dev, off_t offset, int size )
 279 {
 280         struct pxa2x0_lcd_softc *sc =
 281                 device_lookup_private(&lcd_cd, minor(dev));
 282         struct pxa2x0_lcd_screen *scr = sc->active;
 283
 284         return bus_dmamem_mmap( &pxa2x0_bus_dma_tag, scr->segs, scr->nsegs,
 285             offset, 0, BUS_DMA_WAITOK|BUS_DMA_COHERENT );
 286 }
 287
 288 int
 289 lcdioctl( dev_t dev, u_long cmd, void *data,
 290             int fflag, struct lwp *l )
 291 {
 292         return EOPNOTSUPP;
 293 }
 294
 295 #endif /* NWSDISPLAY>0 */