/*-
* Copyright (c) 2012-2013 Robert N. M. Watson
* All rights reserved.
*
* This software was developed by SRI International and the University of
* Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237)
* ("CTSRD"), as part of the DARPA CRASH research programme.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/bus.h>
#include <sys/condvar.h>
#include <sys/conf.h>
#include <sys/consio.h> /* struct vt_mode */
#include <sys/fbio.h> /* video_adapter_t */
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/module.h>
#include <sys/mutex.h>
#include <sys/rman.h>
#include <sys/systm.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <dev/fdt/fdt_common.h>
#include <dev/ofw/openfirm.h>
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h>
#include <dev/terasic/mtl/terasic_mtl.h>
#include "fb_if.h"
static int
terasic_mtl_fdt_probe(device_t dev)
{
if (!ofw_bus_status_okay(dev))
return (ENXIO);
if (ofw_bus_is_compatible(dev, "sri-cambridge,mtl")) {
device_set_desc(dev, "Terasic Multi-touch LCD (MTL)");
return (BUS_PROBE_DEFAULT);
}
return (ENXIO);
}
static int
terasic_mtl_fdt_attach(device_t dev)
{
struct terasic_mtl_softc *sc;
int error;
sc = device_get_softc(dev);
sc->mtl_dev = dev;
sc->mtl_unit = device_get_unit(dev);
/*
* FDT allows multiple memory resources to be defined for a device;
* query them in the order registers, pixel buffer, text buffer.
* However, we need to sanity-check that they are page-aligned and
* page-sized, so we may still abort.
*/
sc->mtl_reg_rid = 0;
sc->mtl_reg_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
&sc->mtl_reg_rid, RF_ACTIVE);
if (sc->mtl_reg_res == NULL) {
device_printf(dev, "couldn't map register memory\n");
error = ENXIO;
goto error;
}
if (rman_get_start(sc->mtl_reg_res) % PAGE_SIZE != 0) {
device_printf(dev, "improper register address\n");
error = ENXIO;
goto error;
}
if (rman_get_size(sc->mtl_reg_res) % PAGE_SIZE != 0) {
device_printf(dev, "improper register size\n");
error = ENXIO;
goto error;
}
device_printf(sc->mtl_dev, "registers at mem %p-%p\n",
(void *)rman_get_start(sc->mtl_reg_res),
(void *)(rman_get_start(sc->mtl_reg_res) +
rman_get_size(sc->mtl_reg_res)));
sc->mtl_pixel_rid = 1;
sc->mtl_pixel_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
&sc->mtl_pixel_rid, RF_ACTIVE);
if (sc->mtl_pixel_res == NULL) {
device_printf(dev, "couldn't map pixel memory\n");
error = ENXIO;
goto error;
}
if (rman_get_start(sc->mtl_pixel_res) % PAGE_SIZE != 0) {
device_printf(dev, "improper pixel address\n");
error = ENXIO;
goto error;
}
if (rman_get_size(sc->mtl_pixel_res) % PAGE_SIZE != 0) {
device_printf(dev, "improper pixel size\n");
error = ENXIO;
goto error;
}
device_printf(sc->mtl_dev, "pixel frame buffer at mem %p-%p\n",
(void *)rman_get_start(sc->mtl_pixel_res),
(void *)(rman_get_start(sc->mtl_pixel_res) +
rman_get_size(sc->mtl_pixel_res)));
sc->mtl_text_rid = 2;
sc->mtl_text_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
&sc->mtl_text_rid, RF_ACTIVE);
if (sc->mtl_text_res == NULL) {
device_printf(dev, "couldn't map text memory\n");
error = ENXIO;
goto error;
}
if (rman_get_start(sc->mtl_text_res) % PAGE_SIZE != 0) {
device_printf(dev, "improper text address\n");
error = ENXIO;
goto error;
}
if (rman_get_size(sc->mtl_text_res) % PAGE_SIZE != 0) {
device_printf(dev, "improper text size\n");
error = ENXIO;
goto error;
}
device_printf(sc->mtl_dev, "text frame buffer at mem %p-%p\n",
(void *)rman_get_start(sc->mtl_text_res),
(void *)(rman_get_start(sc->mtl_text_res) +
rman_get_size(sc->mtl_text_res)));
error = terasic_mtl_attach(sc);
if (error == 0)
return (0);
error:
if (sc->mtl_text_res != NULL)
bus_release_resource(dev, SYS_RES_MEMORY, sc->mtl_text_rid,
sc->mtl_text_res);
if (sc->mtl_pixel_res != NULL)
bus_release_resource(dev, SYS_RES_MEMORY, sc->mtl_pixel_rid,
sc->mtl_pixel_res);
if (sc->mtl_reg_res != NULL)
bus_release_resource(dev, SYS_RES_MEMORY, sc->mtl_reg_rid,
sc->mtl_reg_res);
return (error);
}
static int
terasic_mtl_fdt_detach(device_t dev)
{
struct terasic_mtl_softc *sc;
sc = device_get_softc(dev);
terasic_mtl_detach(sc);
bus_release_resource(dev, SYS_RES_MEMORY, sc->mtl_text_rid,
sc->mtl_text_res);
bus_release_resource(dev, SYS_RES_MEMORY, sc->mtl_pixel_rid,
sc->mtl_pixel_res);
bus_release_resource(dev, SYS_RES_MEMORY, sc->mtl_reg_rid,
sc->mtl_reg_res);
return (0);
}
static struct fb_info *
terasic_mtl_fb_getinfo(device_t dev)
{
struct terasic_mtl_softc *sc;
sc = device_get_softc(dev);
return (&sc->mtl_fb_info);
}
static device_method_t terasic_mtl_fdt_methods[] = {
DEVMETHOD(device_probe, terasic_mtl_fdt_probe),
DEVMETHOD(device_attach, terasic_mtl_fdt_attach),
DEVMETHOD(device_detach, terasic_mtl_fdt_detach),
DEVMETHOD(fb_getinfo, terasic_mtl_fb_getinfo),
{ 0, 0 }
};
static driver_t terasic_mtl_fdt_driver = {
"terasic_mtl",
terasic_mtl_fdt_methods,
sizeof(struct terasic_mtl_softc),
};
DRIVER_MODULE(mtl, simplebus, terasic_mtl_fdt_driver, terasic_mtl_devclass, 0,
0);