imx23_usb.c revision 1.3 
1/* $Id: imx23_usb.c,v 1.3 2020/11/28 14:38:50 skrll Exp $ */
2
3/*
4 * Copyright (c) 2013 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Petri Laakso.
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 <sys/param.h>
33#include <sys/types.h>
34#include <sys/bus.h>
35#include <sys/errno.h>
36
37#include <arm/pic/picvar.h>
38
39#include <dev/usb/usb.h>
40#include <dev/usb/usbdi.h>
41#include <dev/usb/usbdivar.h>
42#include <dev/usb/usb_mem.h>
43#include <dev/usb/ehcireg.h>
44#include <dev/usb/ehcivar.h>
45#include <arm/imx/imxusbvar.h>
46#include <arm/imx/imxusbreg.h>
47
48#include <arm/mainbus/mainbus.h>
49
50#include <arm/imx/imx23_clkctrlvar.h>
51#include <arm/imx/imx23_digctlvar.h>
52#include <arm/imx/imx23_pinctrlvar.h>
53#include <arm/imx/imx23var.h>
54
55#include "locators.h"
56
57struct imx23_usb_softc {
58	struct imxusbc_softc  sc_imxusbc; /* Must be first */
59};
60
61static int	imx23_usb_match(device_t, cfdata_t, void *);
62static void	imx23_usb_attach(device_t, device_t, void *);
63static int	imx23_usb_activate(device_t, enum devact);
64
65static int      imxusbc_search(device_t, cfdata_t, const int *, void *);
66static void	imx23_usb_init(struct imxehci_softc *);
67
68CFATTACH_DECL3_NEW(imxusbc,
69        sizeof(struct imx23_usb_softc),
70        imx23_usb_match,
71        imx23_usb_attach,
72        NULL,
73        imx23_usb_activate,
74        NULL,
75        NULL,
76        0
77);
78
79#define AHB_USB		0x80080000
80#define AHB_USB_SIZE	0x40000
81
82static int
83imx23_usb_match(device_t parent, cfdata_t match, void *aux)
84{
85	struct ahb_attach_args *aa = aux;
86
87	if ((aa->aa_addr == AHB_USB) && (aa->aa_size == AHB_USB_SIZE))
88		return 1;
89
90	return 0;
91}
92
93static void
94imx23_usb_attach(device_t parent, device_t self, void *aux)
95{
96	struct imxusbc_softc *sc = device_private(self);
97
98	sc->sc_dev = self;
99	sc->sc_iot = &imx23_bus_space;
100	sc->sc_ehci_size = IMXUSB_EHCI_SIZE;
101	sc->sc_ehci_offset = IMXUSB_EHCI_SIZE;
102
103	sc->sc_init_md_hook = imx23_usb_init;
104	sc->sc_intr_establish_md_hook = NULL;
105	sc->sc_setup_md_hook = NULL;
106
107	if (bus_space_map(sc->sc_iot, AHB_USB, AHB_USB_SIZE, 0, &sc->sc_ioh)) {
108		aprint_error_dev(sc->sc_dev, "Unable to map bus space");
109		return;
110	}
111
112	/* Enable PLL outputs for USB PHY. */
113	clkctrl_en_usb();
114
115	/* Enable external USB chip. */
116	imx23_pinctrl_en_usb();
117
118	/* USB clock on. */
119	digctl_usb_clkgate(0);
120
121	aprint_normal("\n");
122
123	/* attach OTG/EHCI host controllers */
124	config_search_ia(imxusbc_search, self, "imxusbc", NULL);
125
126	return;
127}
128
129static int
130imx23_usb_activate(device_t self, enum devact act)
131{
132	return EOPNOTSUPP;
133}
134
135static int
136imxusbc_search(device_t parent, cfdata_t cf, const int *ldesc, void *aux)
137{
138        struct imxusbc_softc *sc = device_private(parent);
139        struct imxusbc_attach_args aa;
140
141        aa.aa_iot = sc->sc_iot;
142        aa.aa_ioh = sc->sc_ioh;
143        aa.aa_dmat = &imx23_bus_dma_tag;
144        aa.aa_unit = cf->cf_loc[IMXUSBCCF_UNIT];
145        aa.aa_irq = cf->cf_loc[IMXUSBCCF_IRQ];
146
147        if (config_match(parent, cf, &aa) > 0)
148                config_attach(parent, cf, &aa, NULL);
149
150        return 0;
151}
152
153static
154void imx23_usb_init(struct imxehci_softc *sc)
155{
156
157	sc->sc_iftype = IMXUSBC_IF_UTMI;
158
159	return;
160}
161