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("$FreeBSD$");
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/at91var.h>
46
47 #include "uart_if.h"
48
49 extern struct uart_class at91_usart_class;
50 static int usart_at91_probe(device_t dev);
51
52 static device_method_t usart_at91_methods[] = {
53 /* Device interface */
54 DEVMETHOD(device_probe, usart_at91_probe),
55 DEVMETHOD(device_attach, uart_bus_attach),
56 DEVMETHOD(device_detach, uart_bus_detach),
57 { 0, 0 }
58 };
59
60 static driver_t usart_at91_driver = {
61 uart_driver_name,
62 usart_at91_methods,
63 sizeof(struct uart_softc),
64 };
65
66 extern SLIST_HEAD(uart_devinfo_list, uart_devinfo) uart_sysdevs;
67
68 static int
usart_at91_probe(device_t dev)69 usart_at91_probe(device_t dev)
70 {
71 struct uart_softc *sc;
72
73 sc = device_get_softc(dev);
74 switch (device_get_unit(dev))
75 {
76 case 0:
77 device_set_desc(dev, "DBGU");
78 /*
79 * Setting sc_sysdev makes this device a 'system device' and
80 * indirectly makes it the system console.
81 */
82 sc->sc_sysdev = SLIST_FIRST(&uart_sysdevs);
83 bcopy(&sc->sc_sysdev->bas, &sc->sc_bas, sizeof(sc->sc_bas));
84 break;
85 case 1:
86 device_set_desc(dev, "USART0");
87 break;
88 case 2:
89 device_set_desc(dev, "USART1");
90 break;
91 case 3:
92 device_set_desc(dev, "USART2");
93 break;
94 case 4:
95 device_set_desc(dev, "USART3");
96 break;
97 case 5:
98 device_set_desc(dev, "USART4");
99 break;
100 case 6:
101 device_set_desc(dev, "USART5");
102 break;
103 }
104 sc->sc_class = &at91_usart_class;
105 if (sc->sc_class->uc_rclk == 0)
106 sc->sc_class->uc_rclk = at91_master_clock;
107 return (uart_bus_probe(dev, 0, 0, 0, device_get_unit(dev)));
108 }
109
110
111 DRIVER_MODULE(uart, atmelarm, usart_at91_driver, uart_devclass, 0, 0);
112