sys/arch/hp300/dev/grf_subr.c

   1 /*      $NetBSD: grf_subr.c,v 1.16 2008/03/29 06:47:07 tsutsui Exp $    */
   2
   3 /*-
   4  * Copyright (c) 1996 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Jason R. Thorpe.
   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  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND 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 THE FOUNDATION OR CONTRIBUTORS
  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  * Subroutines common to all framebuffer devices.
  34  */
  35
  36 #include <sys/cdefs.h>
  37 __KERNEL_RCSID(0, "$NetBSD: grf_subr.c,v 1.16 2008/03/29 06:47:07 tsutsui Exp $");
  38
  39 #include <sys/param.h>
  40 #include <sys/systm.h>
  41 #include <sys/malloc.h>
  42 #include <sys/device.h>
  43
  44 #include <machine/autoconf.h>
  45 #include <machine/cpu.h>
  46
  47 #include <hp300/dev/grfioctl.h>
  48 #include <hp300/dev/grfvar.h>
  49
  50 static int      grfdevprint(void *, const char *);
  51
  52 void
  53 grfdev_attach(struct grfdev_softc *sc,
  54     int (*init)(struct grf_data *, int, uint8_t *),
  55     void *regs, struct grfsw *sw)
  56 {
  57         struct grfdev_attach_args ga;
  58         struct grf_data *gp;
  59
  60         if (sc->sc_isconsole)
  61                 sc->sc_data = gp = &grf_cn;
  62         else {
  63                 sc->sc_data = malloc(sizeof(struct grf_data),
  64                     M_DEVBUF, M_NOWAIT | M_ZERO);
  65                 if (sc->sc_data == NULL) {
  66                         aprint_error(": can't allocate grf data\n");
  67                         return;
  68                 }
  69
  70                 /* Initialize the framebuffer hardware. */
  71                 if ((*init)(sc->sc_data, sc->sc_scode, regs) == 0) {
  72                         aprint_error(": init failed\n");
  73                         free(sc->sc_data, M_DEVBUF);
  74                         return;
  75                 }
  76
  77                 gp = sc->sc_data;
  78                 gp->g_flags = GF_ALIVE;
  79                 gp->g_sw = sw;
  80                 gp->g_display.gd_id = gp->g_sw->gd_swid;
  81         }
  82
  83         /* Announce ourselves. */
  84         printf(": %d x %d ", gp->g_display.gd_dwidth,
  85             gp->g_display.gd_dheight);
  86         if (gp->g_display.gd_colors == 2)
  87                 printf("monochrome");
  88         else
  89                 printf("%d color", gp->g_display.gd_colors);
  90         printf(" %s display\n", gp->g_sw->gd_desc);
  91
  92         /* Attach a grf. */
  93         ga.ga_scode = sc->sc_scode;     /* XXX */
  94         ga.ga_isconsole = sc->sc_isconsole;
  95         ga.ga_data = (void *)sc->sc_data;
  96         (void)config_found(sc->sc_dev, &ga, grfdevprint);
  97 }
  98
  99 static int
 100 grfdevprint(void *aux, const char *pnp)
 101 {
 102         /* struct grfdev_attach_args *ga = aux; */
 103
 104         /* Only grf's can attach to grfdev's... easy. */
 105         if (pnp)
 106                 aprint_normal("grf at %s", pnp);
 107
 108         return (UNCONF);
 109 }