1/*	$NetBSD$	*/
2
3/*-
4 * Copyright (c) 2012 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Nick Hudson
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32/* Interface to plcom (PL011) serial driver. */
33
34#include <sys/cdefs.h>
35__KERNEL_RCSID(0, "$NetBSD$");
36
37#include <sys/types.h>
38#include <sys/device.h>
39#include <sys/systm.h>
40#include <sys/param.h>
41#include <sys/termios.h>
42#include <sys/bus.h>
43
44#include <arm/broadcom/bcm_amba.h>
45#include <arm/broadcom/bcm2835_intr.h>
46#include <arm/broadcom/bcm2835reg.h>
47
48#include <evbarm/dev/plcomreg.h>
49#include <evbarm/dev/plcomvar.h>
50
51static int bcm2835_plcom_match(device_t, cfdata_t, void *);
52static void bcm2835_plcom_attach(device_t, device_t, void *);
53
54CFATTACH_DECL_NEW(bcmplcom, sizeof(struct plcom_softc),
55    bcm2835_plcom_match, bcm2835_plcom_attach, NULL, NULL);
56
57static int
58bcm2835_plcom_match(device_t parent, cfdata_t cf, void *aux)
59{
60	struct amba_attach_args *aaa = aux;
61
62	if (strcmp(aaa->aaa_name, "plcom") != 0)
63		return 0;
64
65	return 1;
66}
67
68static void
69bcm2835_plcom_attach(device_t parent, device_t self, void *aux)
70{
71	struct plcom_softc *sc = device_private(self);
72	struct amba_attach_args *aaa = aux;
73	void *ih;
74
75	sc->sc_dev = self;
76	sc->sc_frequency = BCM2835_UART0_CLK;
77	sc->sc_hwflags = PLCOM_HW_TXFIFO_DISABLE;
78	sc->sc_swflags = 0;
79	sc->sc_set_mcr = NULL;
80	sc->sc_set_mcr_arg = NULL;
81
82	sc->sc_pi.pi_type = PLCOM_TYPE_PL011;
83	sc->sc_pi.pi_flags = PLC_FLAG_32BIT_ACCESS;
84	sc->sc_pi.pi_iot = aaa->aaa_iot;
85	sc->sc_pi.pi_iobase = aaa->aaa_addr;
86
87	if (bus_space_map(aaa->aaa_iot, aaa->aaa_addr, PL011COM_UART_SIZE, 0,
88	    &sc->sc_pi.pi_ioh)) {
89		aprint_error_dev(sc->sc_dev, "unable to map device\n");
90		return;
91	}
92
93	plcom_attach_subr(sc);
94	ih = bcm2835_intr_establish(aaa->aaa_intr, IPL_SERIAL, plcomintr, sc);
95	if (ih == NULL)
96		panic("%s: cannot install interrupt handler",
97		    device_xname(sc->sc_dev));
98}
99