1 /*-
2 * Copyright (c) 2005 Olivier Houchard. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23 * SUCH DAMAGE.
24 */
25
26 #include "opt_uart.h"
27
28 #include <sys/cdefs.h>
29 __FBSDID("$FreeBSD: releng/9.0/sys/arm/at91/uart_bus_at91usart.c 217036 2011-01-05 23:45:07Z imp $");
30
31 #include <sys/param.h>
32 #include <sys/systm.h>
33 #include <sys/bus.h>
34 #include <sys/conf.h>
35 #include <sys/kernel.h>
36 #include <sys/module.h>
37 #include <machine/bus.h>
38 #include <sys/rman.h>
39 #include <machine/resource.h>
40
41 #include <dev/uart/uart.h>
42 #include <dev/uart/uart_bus.h>
43 #include <dev/uart/uart_cpu.h>
44
45 #include <arm/at91/at91rm92reg.h>
46 #include <arm/at91/at91var.h>
47
48 #include "uart_if.h"
49
50 static int usart_at91rm92_probe(device_t dev);
51
52 extern struct uart_class at91_usart_class;
53
54 static device_method_t usart_at91rm92_methods[] = {
55 /* Device interface */
56 DEVMETHOD(device_probe, usart_at91rm92_probe),
57 DEVMETHOD(device_attach, uart_bus_attach),
58 DEVMETHOD(device_detach, uart_bus_detach),
59 { 0, 0 }
60 };
61
62 static driver_t usart_at91rm92_driver = {
63 uart_driver_name,
64 usart_at91rm92_methods,
65 sizeof(struct uart_softc),
66 };
67
68 extern SLIST_HEAD(uart_devinfo_list, uart_devinfo) uart_sysdevs;
69
70 static int
71 usart_at91rm92_probe(device_t dev)
72 {
73 struct uart_softc *sc;
74
75 sc = device_get_softc(dev);
76 switch (device_get_unit(dev))
77 {
78 case 0:
79 device_set_desc(dev, "DBGU");
80 /*
81 * Setting sc_sysdev makes this device a 'system device' and
82 * indirectly makes it the system console.
83 */
84 sc->sc_sysdev = SLIST_FIRST(&uart_sysdevs);
85 bcopy(&sc->sc_sysdev->bas, &sc->sc_bas, sizeof(sc->sc_bas));
86 break;
87 case 1:
88 device_set_desc(dev, "USART0");
89 break;
90 case 2:
91 device_set_desc(dev, "USART1");
92 break;
93 case 3:
94 device_set_desc(dev, "USART2");
95 break;
96 case 4:
97 device_set_desc(dev, "USART3");
98 break;
99 }
100 sc->sc_class = &at91_usart_class;
101 if (sc->sc_class->uc_rclk == 0)
102 sc->sc_class->uc_rclk = at91_master_clock;
103 return (uart_bus_probe(dev, 0, 0, 0, device_get_unit(dev)));
104 }
105
106
107 DRIVER_MODULE(uart, atmelarm, usart_at91rm92_driver, uart_devclass, 0, 0);
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