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/* $OpenBSD: simplefb.c,v 1.1 2017/01/03 19:57:01 kettenis Exp $ */
/*
* Copyright (c) 2016 Mark Kettenis
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <machine/bus.h>
#include <machine/fdt.h>
#include <dev/ofw/openfirm.h>
#include <dev/ofw/fdt.h>
#include <dev/wscons/wsconsio.h>
#include <dev/wscons/wsdisplayvar.h>
#include <dev/rasops/rasops.h>
struct simplefb_format {
const char *format;
int depth;
int rpos, rnum;
int gpos, gnum;
int bpos, bnum;
};
/*
* Supported pixel formats. Layout ommitted when it matches the
* rasops defaults.
*/
struct simplefb_format simplefb_formats[] = {
{ "r5g6b5", 16 },
{ "x1r5g5b5", 15 },
{ "a1r5g5b5", 15 },
{ "r8g8b8", 24 },
{ "x8r8g8b8", 32 },
{ "a8r8g8b8", 32 },
{ "a8b8g8r8", 32, 0, 8, 8, 8, 16, 8 }
};
struct simplefb_softc {
struct device sc_dev;
bus_space_tag_t sc_iot;
bus_space_handle_t sc_ioh;
struct rasops_info sc_ri;
struct wsscreen_descr sc_wsd;
struct wsscreen_list sc_wsl;
struct wsscreen_descr *sc_scrlist[1];
struct simplefb_format *sc_format;
paddr_t sc_paddr;
psize_t sc_psize;
};
int simplefb_match(struct device *, void *, void *);
void simplefb_attach(struct device *, struct device *, void *);
struct cfattach simplefb_ca = {
sizeof(struct simplefb_softc), simplefb_match, simplefb_attach
};
struct cfdriver simplefb_cd = {
NULL, "simplefb", DV_DULL
};
int simplefb_wsioctl(void *, u_long, caddr_t, int, struct proc *);
paddr_t simplefb_wsmmap(void *, off_t, int);
int simplefb_alloc_screen(void *, const struct wsscreen_descr *,
void **, int *, int *, long *);
struct wsdisplay_accessops simplefb_accessops = {
.ioctl = simplefb_wsioctl,
.mmap = simplefb_wsmmap,
.alloc_screen = simplefb_alloc_screen,
.free_screen = rasops_free_screen,
.show_screen = rasops_show_screen,
.getchar = rasops_getchar,
.load_font = rasops_load_font,
.list_font = rasops_list_font,
};
int
simplefb_match(struct device *parent, void *match, void *aux)
{
struct fdt_attach_args *faa = aux;
return OF_is_compatible(faa->fa_node, "simple-framebuffer");
}
void
simplefb_attach(struct device *parent, struct device *self, void *aux)
{
struct simplefb_softc *sc = (struct simplefb_softc *)self;
struct fdt_attach_args *faa = aux;
struct rasops_info *ri = &sc->sc_ri;
struct wsemuldisplaydev_attach_args waa;
char format[16];
int i;
if (faa->fa_nreg < 1)
return;
format[0] = 0;
OF_getprop(faa->fa_node, "format", format, sizeof(format));
format[sizeof(format) - 1] = 0;
for (i = 0; i < nitems(simplefb_formats); i++) {
if (strcmp(format, simplefb_formats[i].format) == 0) {
sc->sc_format = &simplefb_formats[i];
break;
}
}
if (sc->sc_format == NULL) {
printf(": unsupported format \"%s\"\n", format);
return;
}
sc->sc_iot = faa->fa_iot;
sc->sc_paddr = faa->fa_reg[0].addr;
sc->sc_psize = faa->fa_reg[0].size;
if (bus_space_map(sc->sc_iot, sc->sc_paddr, sc->sc_psize,
BUS_SPACE_MAP_LINEAR | BUS_SPACE_MAP_PREFETCHABLE, &sc->sc_ioh))
panic("%s: bus_space_map failed!", __func__);
ri->ri_width = OF_getpropint(faa->fa_node, "width", 0);
ri->ri_height = OF_getpropint(faa->fa_node, "height", 0);
ri->ri_stride = OF_getpropint(faa->fa_node, "stride", 0);
ri->ri_depth = sc->sc_format->depth;
ri->ri_rpos = sc->sc_format->rpos;
ri->ri_rnum = sc->sc_format->rnum;
ri->ri_gpos = sc->sc_format->gpos;
ri->ri_gnum = sc->sc_format->gnum;
ri->ri_bpos = sc->sc_format->bpos;
ri->ri_bnum = sc->sc_format->bnum;
ri->ri_flg = RI_CENTER | RI_CLEAR | RI_FULLCLEAR;
ri->ri_flg |= RI_VCONS | RI_WRONLY;
ri->ri_bits = bus_space_vaddr(sc->sc_iot, sc->sc_ioh);
ri->ri_hw = sc;
printf(": %dx%d\n", ri->ri_width, ri->ri_height);
rasops_init(ri, 160, 160);
strlcpy(sc->sc_wsd.name, "std", sizeof(sc->sc_wsd.name));
sc->sc_wsd.capabilities = ri->ri_caps;
sc->sc_wsd.nrows = ri->ri_rows;
sc->sc_wsd.ncols = ri->ri_cols;
sc->sc_wsd.textops = &ri->ri_ops;
sc->sc_wsd.fontwidth = ri->ri_font->fontwidth;
sc->sc_wsd.fontheight = ri->ri_font->fontheight;
sc->sc_scrlist[0] = &sc->sc_wsd;
sc->sc_wsl.nscreens = 1;
sc->sc_wsl.screens = (const struct wsscreen_descr **)sc->sc_scrlist;
memset(&waa, 0, sizeof(waa));
waa.scrdata = &sc->sc_wsl;
waa.accessops = &simplefb_accessops;
waa.accesscookie = ri;
config_found_sm(self, &waa, wsemuldisplaydevprint,
wsemuldisplaydevsubmatch);
}
int
simplefb_wsioctl(void *v, u_long cmd, caddr_t data, int flag, struct proc *p)
{
struct rasops_info *ri = v;
struct wsdisplay_fbinfo *wdf;
switch (cmd) {
case WSDISPLAYIO_GTYPE:
*(int *)data = WSDISPLAY_TYPE_EFIFB;
return 0;
case WSDISPLAYIO_GINFO:
wdf = (struct wsdisplay_fbinfo *)data;
wdf->width = ri->ri_width;
wdf->height = ri->ri_height;
wdf->depth = ri->ri_depth;
wdf->cmsize = 0; /* color map is unavailable */
break;
case WSDISPLAYIO_LINEBYTES:
*(u_int *)data = ri->ri_stride;
break;
case WSDISPLAYIO_SMODE:
break;
case WSDISPLAYIO_GETSUPPORTEDDEPTH:
switch (ri->ri_depth) {
case 32:
*(u_int *)data = WSDISPLAYIO_DEPTH_24_32;
break;
case 24:
*(u_int *)data = WSDISPLAYIO_DEPTH_24_24;
break;
case 16:
*(u_int *)data = WSDISPLAYIO_DEPTH_16;
break;
case 15:
*(u_int *)data = WSDISPLAYIO_DEPTH_15;
break;
default:
return -1;
}
break;
default:
return -1;
}
return 0;
}
paddr_t
simplefb_wsmmap(void *v, off_t off, int prot)
{
struct rasops_info *ri = v;
struct simplefb_softc *sc = ri->ri_hw;
if (off < 0 || off >= sc->sc_psize)
return -1;
return sc->sc_paddr + off;
}
int
simplefb_alloc_screen(void *v, const struct wsscreen_descr *type,
void **cookiep, int *curxp, int *curyp, long *attrp)
{
return rasops_alloc_screen(v, cookiep, curxp, curyp, attrp);
}
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