exynos_ehci.c revision 1.3 
1/*	$NetBSD: exynos_ehci.c,v 1.3 2018/04/09 16:21:09 jakllsch Exp $	*/
2
3/*-
4 * Copyright (c) 2014 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Reinoud Zandijk.
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#include "locators.h"
33#include "ohci.h"
34#include "ehci.h"
35
36#include <sys/cdefs.h>
37
38__KERNEL_RCSID(1, "$NetBSD: exynos_ehci.c,v 1.3 2018/04/09 16:21:09 jakllsch Exp $");
39
40#include <sys/param.h>
41#include <sys/systm.h>
42#include <sys/kernel.h>
43#include <sys/intr.h>
44#include <sys/bus.h>
45#include <sys/device.h>
46#include <sys/proc.h>
47#include <sys/queue.h>
48#include <sys/kmem.h>
49#include <sys/gpio.h>
50
51#include <dev/usb/usb.h>
52#include <dev/usb/usbdi.h>
53#include <dev/usb/usbdivar.h>
54#include <dev/usb/usb_mem.h>
55
56#include <dev/usb/ehcireg.h>
57#include <dev/usb/ehcivar.h>
58
59#include <arm/samsung/exynos_reg.h>
60#include <arm/samsung/exynos_var.h>
61
62#include <dev/fdt/fdtvar.h>
63
64static int	exynos_ehci_match(device_t, cfdata_t, void *);
65static void	exynos_ehci_attach(device_t, device_t, void *);
66
67CFATTACH_DECL_NEW(exynos_ehci, sizeof(struct ehci_softc),
68    exynos_ehci_match, exynos_ehci_attach, NULL, NULL);
69
70
71static int
72exynos_ehci_match(device_t parent, cfdata_t cf, void *aux)
73{
74	const char * const compatible[] = { "samsung,exynos5-ehci",
75					    NULL };
76	struct fdt_attach_args * const faa = aux;
77	return of_match_compatible(faa->faa_phandle, compatible);
78}
79
80
81static void
82exynos_ehci_attach(device_t parent, device_t self, void *aux)
83{
84	struct ehci_softc *sc = device_private(self);
85	struct fdt_attach_args * const faa = aux;
86	bus_addr_t addr;
87	bus_size_t size;
88	int error;
89
90	if (fdtbus_get_reg(faa->faa_phandle, 0, &addr, &size) != 0) {
91		aprint_error(": couldn't get registers\n");
92		return;
93	}
94
95	sc->sc_dev = self;
96	sc->iot = faa->faa_bst;
97	sc->sc_size = size;
98	sc->sc_bus.ub_dmatag = faa->faa_dmat;
99	sc->sc_bus.ub_hcpriv = sc;
100	sc->sc_bus.ub_revision = USBREV_2_0;
101	sc->sc_ncomp = 0;
102
103	error = bus_space_map(sc->iot, addr, size, 0, &sc->ioh);
104	if (error) {
105		aprint_error(": couldn't map %#llx: %d",
106			     (uint64_t)addr, error);
107		return;
108	}
109
110
111	aprint_naive(": EHCI USB controller\n");
112	aprint_normal(": EHCI NOT IMPLEMENTED\n");
113
114	/* attach */
115	error = ehci_init(sc);
116	if (error) {
117		aprint_error_dev(self, "init failed, error = %d\n", error);
118		/* disable : TBD */
119		return;
120	}
121	sc->sc_child = config_found(self, &sc->sc_bus, usbctlprint);
122}
123