zusb.c revision 1.6 1 1.6 dyoung /* $NetBSD: zusb.c,v 1.6 2011/07/19 15:11:49 dyoung Exp $ */
2 1.1 chris
3 1.1 chris /*
4 1.1 chris * Copyright (c) 2008 Christopher Gilbert
5 1.1 chris * All rights reserved.
6 1.1 chris *
7 1.1 chris * 1. Redistributions of source code must retain the above copyright
8 1.1 chris * notice, this list of conditions and the following disclaimer.
9 1.1 chris * 2. Redistributions in binary form must reproduce the above copyright
10 1.1 chris * notice, this list of conditions and the following disclaimer in the
11 1.1 chris * documentation and/or other materials provided with the distribution.
12 1.1 chris * 3. The name of the company nor the name of the author may be used to
13 1.1 chris * endorse or promote products derived from this software without specific
14 1.1 chris * prior written permission.
15 1.1 chris *
16 1.1 chris * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
17 1.1 chris * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
18 1.1 chris * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 1.1 chris * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
20 1.1 chris * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 1.1 chris * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
22 1.1 chris * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 1.1 chris * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 1.1 chris * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 1.1 chris * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 1.1 chris * SUCH DAMAGE.
27 1.1 chris */
28 1.1 chris
29 1.1 chris #include <sys/cdefs.h>
30 1.6 dyoung __KERNEL_RCSID(0, "$NetBSD: zusb.c,v 1.6 2011/07/19 15:11:49 dyoung Exp $");
31 1.1 chris
32 1.1 chris #include <sys/param.h>
33 1.1 chris #include <sys/device.h>
34 1.1 chris #include <sys/kernel.h>
35 1.6 dyoung #include <sys/bus.h>
36 1.1 chris
37 1.1 chris #include <arm/xscale/pxa2x0reg.h>
38 1.1 chris #include <arm/xscale/pxa2x0var.h>
39 1.1 chris #include <arm/xscale/pxa2x0_gpio.h>
40 1.1 chris
41 1.1 chris #include <machine/intr.h>
42 1.1 chris
43 1.1 chris #include <zaurus/zaurus/zaurus_reg.h>
44 1.1 chris #include <zaurus/zaurus/zaurus_var.h>
45 1.1 chris
46 1.2 nonaka
47 1.2 nonaka #ifdef ZUSB_DEBUG
48 1.2 nonaka #define DPRINTF(s) printf s
49 1.2 nonaka #else
50 1.2 nonaka #define DPRINTF(s)
51 1.2 nonaka #endif
52 1.2 nonaka
53 1.2 nonaka
54 1.1 chris struct zusb_softc {
55 1.3 nonaka device_t sc_dev;
56 1.2 nonaka
57 1.1 chris bus_space_tag_t sc_iot;
58 1.1 chris bus_space_handle_t sc_ioh;
59 1.2 nonaka
60 1.2 nonaka void *sc_client_ih;
61 1.2 nonaka void *sc_host_ih;
62 1.1 chris };
63 1.1 chris
64 1.4 nonaka static int zusb_match(device_t, cfdata_t, void *);
65 1.4 nonaka static void zusb_attach(device_t, device_t, void *);
66 1.1 chris
67 1.3 nonaka CFATTACH_DECL_NEW(zusb, sizeof(struct zusb_softc),
68 1.1 chris zusb_match, zusb_attach, NULL, NULL);
69 1.1 chris
70 1.1 chris static int zusb_client_intr(void *);
71 1.1 chris static int zusb_host_intr(void *);
72 1.1 chris static void zusb_test_and_enabled_host_port(struct zusb_softc *);
73 1.1 chris
74 1.1 chris static int
75 1.3 nonaka zusb_match(device_t parent, cfdata_t cf, void *aux)
76 1.1 chris {
77 1.1 chris
78 1.5 nonaka if (ZAURUS_ISC1000 || ZAURUS_ISC3000)
79 1.1 chris return 1;
80 1.1 chris return 0;
81 1.1 chris }
82 1.1 chris
83 1.1 chris static void
84 1.3 nonaka zusb_attach(device_t parent, device_t self, void *aux)
85 1.1 chris {
86 1.3 nonaka struct zusb_softc *sc = device_private(self);
87 1.1 chris struct pxaip_attach_args *pxa = aux;
88 1.1 chris
89 1.2 nonaka aprint_normal(": USB Mode detection\n");
90 1.4 nonaka aprint_naive("\n");
91 1.2 nonaka
92 1.3 nonaka sc->sc_dev = self;
93 1.1 chris sc->sc_iot = pxa->pxa_iot;
94 1.2 nonaka
95 1.1 chris /* Map I/O space */
96 1.1 chris if (bus_space_map(sc->sc_iot, PXA2X0_USBDC_BASE, PXA270_USBDC_SIZE, 0,
97 1.1 chris &sc->sc_ioh)) {
98 1.3 nonaka aprint_error_dev(sc->sc_dev, "couldn't map memory space\n");
99 1.1 chris return;
100 1.1 chris }
101 1.1 chris
102 1.1 chris pxa2x0_gpio_set_function(C3000_USB_DEVICE_PIN, GPIO_IN);
103 1.1 chris sc->sc_client_ih = pxa2x0_gpio_intr_establish(C3000_USB_DEVICE_PIN,
104 1.1 chris IST_EDGE_BOTH, IPL_BIO, zusb_client_intr, sc);
105 1.1 chris
106 1.1 chris pxa2x0_gpio_set_function(C3000_USB_HOST_PIN, GPIO_IN);
107 1.1 chris sc->sc_host_ih = pxa2x0_gpio_intr_establish(C3000_USB_HOST_PIN,
108 1.1 chris IST_EDGE_BOTH, IPL_BIO, zusb_host_intr, sc);
109 1.1 chris
110 1.1 chris /* configure port 2 for input */
111 1.1 chris bus_space_write_4(sc->sc_iot, sc->sc_ioh, USBDC_UP2OCR,
112 1.1 chris USBDC_UP2OCR_HXS | USBDC_UP2OCR_HXOE |
113 1.1 chris USBDC_UP2OCR_DPPDE | USBDC_UP2OCR_DMPDE);
114 1.1 chris
115 1.1 chris zusb_test_and_enabled_host_port(sc);
116 1.1 chris }
117 1.1 chris
118 1.1 chris static int
119 1.1 chris zusb_client_intr(void *v)
120 1.1 chris {
121 1.1 chris struct zusb_softc *sc = v;
122 1.2 nonaka
123 1.3 nonaka DPRINTF(("%s: USB client cable changed\n", device_xname(sc->sc_dev)));
124 1.1 chris zusb_test_and_enabled_host_port(sc);
125 1.1 chris
126 1.1 chris return 1;
127 1.1 chris }
128 1.1 chris
129 1.1 chris static int
130 1.1 chris zusb_host_intr(void *v)
131 1.1 chris {
132 1.1 chris struct zusb_softc *sc = v;
133 1.1 chris
134 1.3 nonaka DPRINTF(("%s: USB host cable changed\n", device_xname(sc->sc_dev)));
135 1.1 chris zusb_test_and_enabled_host_port(sc);
136 1.1 chris
137 1.1 chris return 1;
138 1.1 chris }
139 1.1 chris
140 1.1 chris static void
141 1.1 chris zusb_test_and_enabled_host_port(struct zusb_softc *sc)
142 1.1 chris {
143 1.1 chris int host_cable = pxa2x0_gpio_get_bit(C3000_USB_HOST_PIN);
144 1.2 nonaka #ifdef ZUSB_DEBUG
145 1.1 chris int client_cable = pxa2x0_gpio_get_bit(C3000_USB_DEVICE_PIN);
146 1.2 nonaka #endif
147 1.2 nonaka
148 1.2 nonaka DPRINTF(("%s: USB cable: host %d, client %d\n",
149 1.3 nonaka device_xname(sc->sc_dev), host_cable, client_cable));
150 1.1 chris
151 1.1 chris if (!host_cable) {
152 1.2 nonaka pxa2x0_gpio_set_function(C3000_USB_HOST_POWER_PIN,
153 1.2 nonaka GPIO_OUT | GPIO_SET);
154 1.2 nonaka DPRINTF(("%s: USB host power enabled\n",
155 1.3 nonaka device_xname(sc->sc_dev)));
156 1.1 chris } else {
157 1.2 nonaka pxa2x0_gpio_set_function(C3000_USB_HOST_POWER_PIN,
158 1.2 nonaka GPIO_OUT | GPIO_CLR);
159 1.2 nonaka DPRINTF(("%s: USB host power disabled\n",
160 1.3 nonaka device_xname(sc->sc_dev)));
161 1.1 chris }
162 1.1 chris }
163