2 * Copyright (c) 2012-2013 Robert N. M. Watson
5 * This software was developed by SRI International and the University of
6 * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237)
7 * ("CTSRD"), as part of the DARPA CRASH research programme.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 #include <sys/cdefs.h>
32 __FBSDID("$FreeBSD$");
34 #include <sys/param.h>
36 #include <sys/condvar.h>
38 #include <sys/consio.h> /* struct vt_mode */
39 #include <sys/fbio.h> /* video_adapter_t */
40 #include <sys/kernel.h>
42 #include <sys/malloc.h>
43 #include <sys/module.h>
44 #include <sys/mutex.h>
46 #include <sys/systm.h>
48 #include <machine/bus.h>
49 #include <machine/resource.h>
51 #include <dev/fdt/fdt_common.h>
52 #include <dev/ofw/openfirm.h>
53 #include <dev/ofw/ofw_bus.h>
54 #include <dev/ofw/ofw_bus_subr.h>
56 #include <dev/terasic/mtl/terasic_mtl.h>
59 terasic_mtl_fdt_probe(device_t dev)
62 if (ofw_bus_is_compatible(dev, "sri-cambridge,mtl")) {
63 device_set_desc(dev, "Terasic Multi-touch LCD (MTL)");
64 return (BUS_PROBE_DEFAULT);
70 terasic_mtl_fdt_attach(device_t dev)
72 struct terasic_mtl_softc *sc;
75 sc = device_get_softc(dev);
77 sc->mtl_unit = device_get_unit(dev);
80 * FDT allows multiple memory resources to be defined for a device;
81 * query them in the order registers, pixel buffer, text buffer.
82 * However, we need to sanity-check that they are page-aligned and
83 * page-sized, so we may still abort.
86 sc->mtl_reg_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
87 &sc->mtl_reg_rid, RF_ACTIVE);
88 if (sc->mtl_reg_res == NULL) {
89 device_printf(dev, "couldn't map register memory\n");
93 if (rman_get_start(sc->mtl_reg_res) % PAGE_SIZE != 0) {
94 device_printf(dev, "improper register address");
98 if (rman_get_size(sc->mtl_reg_res) % PAGE_SIZE != 0) {
99 device_printf(dev, "improper register size");
103 device_printf(sc->mtl_dev, "registers at mem %p-%p\n",
104 (void *)rman_get_start(sc->mtl_reg_res),
105 (void *)(rman_get_start(sc->mtl_reg_res) +
106 rman_get_size(sc->mtl_reg_res)));
108 sc->mtl_pixel_rid = 1;
109 sc->mtl_pixel_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
110 &sc->mtl_pixel_rid, RF_ACTIVE);
111 if (sc->mtl_pixel_res == NULL) {
112 device_printf(dev, "couldn't map pixel memory\n");
116 if (rman_get_start(sc->mtl_pixel_res) % PAGE_SIZE != 0) {
117 device_printf(dev, "improper pixel address");
121 if (rman_get_size(sc->mtl_pixel_res) % PAGE_SIZE != 0) {
122 device_printf(dev, "improper pixel size");
126 device_printf(sc->mtl_dev, "pixel frame buffer at mem %p-%p\n",
127 (void *)rman_get_start(sc->mtl_pixel_res),
128 (void *)(rman_get_start(sc->mtl_pixel_res) +
129 rman_get_size(sc->mtl_pixel_res)));
131 sc->mtl_text_rid = 2;
132 sc->mtl_text_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
133 &sc->mtl_text_rid, RF_ACTIVE);
134 if (sc->mtl_text_res == NULL) {
135 device_printf(dev, "couldn't map text memory\n");
139 if (rman_get_start(sc->mtl_text_res) % PAGE_SIZE != 0) {
140 device_printf(dev, "improper text address");
144 if (rman_get_size(sc->mtl_text_res) % PAGE_SIZE != 0) {
145 device_printf(dev, "improper text size");
149 device_printf(sc->mtl_dev, "text frame buffer at mem %p-%p\n",
150 (void *)rman_get_start(sc->mtl_text_res),
151 (void *)(rman_get_start(sc->mtl_text_res) +
152 rman_get_size(sc->mtl_text_res)));
154 error = terasic_mtl_attach(sc);
158 if (sc->mtl_text_res != NULL)
159 bus_release_resource(dev, SYS_RES_MEMORY, sc->mtl_text_rid,
161 if (sc->mtl_pixel_res != NULL)
162 bus_release_resource(dev, SYS_RES_MEMORY, sc->mtl_pixel_rid,
164 if (sc->mtl_reg_res != NULL)
165 bus_release_resource(dev, SYS_RES_MEMORY, sc->mtl_reg_rid,
171 terasic_mtl_fdt_detach(device_t dev)
173 struct terasic_mtl_softc *sc;
175 sc = device_get_softc(dev);
176 terasic_mtl_detach(sc);
177 bus_release_resource(dev, SYS_RES_MEMORY, sc->mtl_text_rid,
179 bus_release_resource(dev, SYS_RES_MEMORY, sc->mtl_pixel_rid,
181 bus_release_resource(dev, SYS_RES_MEMORY, sc->mtl_reg_rid,
186 static device_method_t terasic_mtl_fdt_methods[] = {
187 DEVMETHOD(device_probe, terasic_mtl_fdt_probe),
188 DEVMETHOD(device_attach, terasic_mtl_fdt_attach),
189 DEVMETHOD(device_detach, terasic_mtl_fdt_detach),
193 static driver_t terasic_mtl_fdt_driver = {
195 terasic_mtl_fdt_methods,
196 sizeof(struct terasic_mtl_softc),
199 DRIVER_MODULE(mtl, simplebus, terasic_mtl_fdt_driver, terasic_mtl_devclass, 0,