2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2014 Ruslan Bukin <br@bsdpad.com>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
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18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * Vybrid Family Timing Controller (TCON)
31 * Chapter 58, Vybrid Reference Manual, Rev. 5, 07/2013
34 #include <sys/cdefs.h>
35 __FBSDID("$FreeBSD$");
37 #include <sys/param.h>
38 #include <sys/systm.h>
40 #include <sys/kernel.h>
41 #include <sys/module.h>
42 #include <sys/malloc.h>
44 #include <sys/timeet.h>
45 #include <sys/timetc.h>
46 #include <sys/watchdog.h>
48 #include <dev/ofw/openfirm.h>
49 #include <dev/ofw/ofw_bus.h>
50 #include <dev/ofw/ofw_bus_subr.h>
52 #include <machine/bus.h>
53 #include <machine/cpu.h>
54 #include <machine/intr.h>
56 #include <arm/freescale/vybrid/vf_common.h>
58 #define TCON0_CTRL1 0x00
59 #define TCON_BYPASS (1 << 29)
62 struct resource *res[1];
64 bus_space_handle_t bsh;
67 struct tcon_softc *tcon_sc;
69 static struct resource_spec tcon_spec[] = {
70 { SYS_RES_MEMORY, 0, RF_ACTIVE },
81 WRITE4(tcon_sc, TCON0_CTRL1, TCON_BYPASS);
87 tcon_probe(device_t dev)
90 if (!ofw_bus_status_okay(dev))
93 if (!ofw_bus_is_compatible(dev, "fsl,mvf600-tcon"))
96 device_set_desc(dev, "Vybrid Family Timing Controller (TCON)");
97 return (BUS_PROBE_DEFAULT);
101 tcon_attach(device_t dev)
103 struct tcon_softc *sc;
105 sc = device_get_softc(dev);
107 if (bus_alloc_resources(dev, tcon_spec, sc->res)) {
108 device_printf(dev, "could not allocate resources\n");
112 /* Memory interface */
113 sc->bst = rman_get_bustag(sc->res[0]);
114 sc->bsh = rman_get_bushandle(sc->res[0]);
121 static device_method_t tcon_methods[] = {
122 DEVMETHOD(device_probe, tcon_probe),
123 DEVMETHOD(device_attach, tcon_attach),
127 static driver_t tcon_driver = {
130 sizeof(struct tcon_softc),
133 DRIVER_MODULE(tcon, simplebus, tcon_driver, 0, 0);