1 /*-
2 * Copyright (c) 2012-2013 Robert N. M. Watson
3 * All rights reserved.
4 *
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.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
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.
17 *
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
28 * SUCH DAMAGE.
29 */
30
31 #include <sys/cdefs.h>
32 __FBSDID("$FreeBSD$");
33
34 #include <sys/param.h>
35 #include <sys/bus.h>
36 #include <sys/condvar.h>
37 #include <sys/conf.h>
38 #include <sys/consio.h> /* struct vt_mode */
39 #include <sys/fbio.h> /* video_adapter_t */
40 #include <sys/kernel.h>
41 #include <sys/lock.h>
42 #include <sys/malloc.h>
43 #include <sys/module.h>
44 #include <sys/mutex.h>
45 #include <sys/rman.h>
46 #include <sys/systm.h>
47
48 #include <machine/bus.h>
49 #include <machine/resource.h>
50
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>
55
56 #include <dev/terasic/mtl/terasic_mtl.h>
57
58 #include "fb_if.h"
59
60 static int
terasic_mtl_fdt_probe(device_t dev)61 terasic_mtl_fdt_probe(device_t dev)
62 {
63
64 if (!ofw_bus_status_okay(dev))
65 return (ENXIO);
66
67 if (ofw_bus_is_compatible(dev, "sri-cambridge,mtl")) {
68 device_set_desc(dev, "Terasic Multi-touch LCD (MTL)");
69 return (BUS_PROBE_DEFAULT);
70 }
71 return (ENXIO);
72 }
73
74 static int
terasic_mtl_fdt_attach(device_t dev)75 terasic_mtl_fdt_attach(device_t dev)
76 {
77 struct terasic_mtl_softc *sc;
78 int error;
79
80 sc = device_get_softc(dev);
81 sc->mtl_dev = dev;
82 sc->mtl_unit = device_get_unit(dev);
83
84 /*
85 * FDT allows multiple memory resources to be defined for a device;
86 * query them in the order registers, pixel buffer, text buffer.
87 * However, we need to sanity-check that they are page-aligned and
88 * page-sized, so we may still abort.
89 */
90 sc->mtl_reg_rid = 0;
91 sc->mtl_reg_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
92 &sc->mtl_reg_rid, RF_ACTIVE);
93 if (sc->mtl_reg_res == NULL) {
94 device_printf(dev, "couldn't map register memory\n");
95 error = ENXIO;
96 goto error;
97 }
98 if (rman_get_start(sc->mtl_reg_res) % PAGE_SIZE != 0) {
99 device_printf(dev, "improper register address\n");
100 error = ENXIO;
101 goto error;
102 }
103 if (rman_get_size(sc->mtl_reg_res) % PAGE_SIZE != 0) {
104 device_printf(dev, "improper register size\n");
105 error = ENXIO;
106 goto error;
107 }
108 device_printf(sc->mtl_dev, "registers at mem %p-%p\n",
109 (void *)rman_get_start(sc->mtl_reg_res),
110 (void *)(rman_get_start(sc->mtl_reg_res) +
111 rman_get_size(sc->mtl_reg_res)));
112
113 sc->mtl_pixel_rid = 1;
114 sc->mtl_pixel_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
115 &sc->mtl_pixel_rid, RF_ACTIVE);
116 if (sc->mtl_pixel_res == NULL) {
117 device_printf(dev, "couldn't map pixel memory\n");
118 error = ENXIO;
119 goto error;
120 }
121 if (rman_get_start(sc->mtl_pixel_res) % PAGE_SIZE != 0) {
122 device_printf(dev, "improper pixel address\n");
123 error = ENXIO;
124 goto error;
125 }
126 if (rman_get_size(sc->mtl_pixel_res) % PAGE_SIZE != 0) {
127 device_printf(dev, "improper pixel size\n");
128 error = ENXIO;
129 goto error;
130 }
131 device_printf(sc->mtl_dev, "pixel frame buffer at mem %p-%p\n",
132 (void *)rman_get_start(sc->mtl_pixel_res),
133 (void *)(rman_get_start(sc->mtl_pixel_res) +
134 rman_get_size(sc->mtl_pixel_res)));
135
136 sc->mtl_text_rid = 2;
137 sc->mtl_text_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
138 &sc->mtl_text_rid, RF_ACTIVE);
139 if (sc->mtl_text_res == NULL) {
140 device_printf(dev, "couldn't map text memory\n");
141 error = ENXIO;
142 goto error;
143 }
144 if (rman_get_start(sc->mtl_text_res) % PAGE_SIZE != 0) {
145 device_printf(dev, "improper text address\n");
146 error = ENXIO;
147 goto error;
148 }
149 if (rman_get_size(sc->mtl_text_res) % PAGE_SIZE != 0) {
150 device_printf(dev, "improper text size\n");
151 error = ENXIO;
152 goto error;
153 }
154 device_printf(sc->mtl_dev, "text frame buffer at mem %p-%p\n",
155 (void *)rman_get_start(sc->mtl_text_res),
156 (void *)(rman_get_start(sc->mtl_text_res) +
157 rman_get_size(sc->mtl_text_res)));
158
159 error = terasic_mtl_attach(sc);
160 if (error == 0)
161 return (0);
162 error:
163 if (sc->mtl_text_res != NULL)
164 bus_release_resource(dev, SYS_RES_MEMORY, sc->mtl_text_rid,
165 sc->mtl_text_res);
166 if (sc->mtl_pixel_res != NULL)
167 bus_release_resource(dev, SYS_RES_MEMORY, sc->mtl_pixel_rid,
168 sc->mtl_pixel_res);
169 if (sc->mtl_reg_res != NULL)
170 bus_release_resource(dev, SYS_RES_MEMORY, sc->mtl_reg_rid,
171 sc->mtl_reg_res);
172 return (error);
173 }
174
175 static int
terasic_mtl_fdt_detach(device_t dev)176 terasic_mtl_fdt_detach(device_t dev)
177 {
178 struct terasic_mtl_softc *sc;
179
180 sc = device_get_softc(dev);
181 terasic_mtl_detach(sc);
182 bus_release_resource(dev, SYS_RES_MEMORY, sc->mtl_text_rid,
183 sc->mtl_text_res);
184 bus_release_resource(dev, SYS_RES_MEMORY, sc->mtl_pixel_rid,
185 sc->mtl_pixel_res);
186 bus_release_resource(dev, SYS_RES_MEMORY, sc->mtl_reg_rid,
187 sc->mtl_reg_res);
188 return (0);
189 }
190
191 static struct fb_info *
terasic_mtl_fb_getinfo(device_t dev)192 terasic_mtl_fb_getinfo(device_t dev)
193 {
194 struct terasic_mtl_softc *sc;
195
196 sc = device_get_softc(dev);
197 return (&sc->mtl_fb_info);
198 }
199
200 static device_method_t terasic_mtl_fdt_methods[] = {
201 DEVMETHOD(device_probe, terasic_mtl_fdt_probe),
202 DEVMETHOD(device_attach, terasic_mtl_fdt_attach),
203 DEVMETHOD(device_detach, terasic_mtl_fdt_detach),
204 DEVMETHOD(fb_getinfo, terasic_mtl_fb_getinfo),
205 { 0, 0 }
206 };
207
208 static driver_t terasic_mtl_fdt_driver = {
209 "terasic_mtl",
210 terasic_mtl_fdt_methods,
211 sizeof(struct terasic_mtl_softc),
212 };
213
214 DRIVER_MODULE(mtl, simplebus, terasic_mtl_fdt_driver, terasic_mtl_devclass, 0,
215 0);
216