udsbr.c revision 1.1 
1/*	$NetBSD: udsbr.c,v 1.1 2002/01/02 03:21:36 augustss Exp $	*/
2
3/*
4 * Copyright (c) 2002 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Lennart Augustsson (lennart@augustsson.net) at
9 * Carlstedt Research & Technology.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 *    notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 *    notice, this list of conditions and the following disclaimer in the
18 *    documentation and/or other materials provided with the distribution.
19 * 3. All advertising materials mentioning features or use of this software
20 *    must display the following acknowledgement:
21 *        This product includes software developed by the NetBSD
22 *        Foundation, Inc. and its contributors.
23 * 4. Neither the name of The NetBSD Foundation nor the names of its
24 *    contributors may be used to endorse or promote products derived
25 *    from this software without specific prior written permission.
26 *
27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37 * POSSIBILITY OF SUCH DAMAGE.
38 */
39
40#include <sys/cdefs.h>
41__KERNEL_RCSID(0, "$NetBSD: udsbr.c,v 1.1 2002/01/02 03:21:36 augustss Exp $");
42
43#include <sys/param.h>
44#include <sys/systm.h>
45#include <sys/kernel.h>
46#include <sys/device.h>
47
48#include <sys/radioio.h>
49#include <dev/radio_if.h>
50
51#include <dev/usb/usb.h>
52#include <dev/usb/usbdi.h>
53#include <dev/usb/usbdi_util.h>
54
55#include <dev/usb/usbdevs.h>
56
57#define UDSBR_DEBUG
58
59#ifdef UDSBR_DEBUG
60#define DPRINTF(x)	if (udsbrdebug) logprintf x
61#define DPRINTFN(n,x)	if (udsbrdebug>(n)) logprintf x
62int	udsbrdebug = 0;
63#else
64#define DPRINTF(x)
65#define DPRINTFN(n,x)
66#endif
67
68#define UDSBR_CONFIG_NO		1
69#define UDSBR_IFACE_IDX		0
70
71int     udsbr_get_info(void *, struct radio_info *);
72int     udsbr_set_info(void *, struct radio_info *);
73int     udsbr_search(void *, int);
74
75struct radio_hw_if udsbr_hw_if = {
76	NULL, /* open */
77	NULL, /* close */
78	udsbr_get_info,
79	udsbr_set_info,
80	NULL
81};
82
83struct udsbr_softc {
84 	USBBASEDEVICE		sc_dev;
85	usbd_device_handle	sc_udev;
86	usbd_interface_handle	sc_iface;
87
88	char			sc_mute;
89	char			sc_vol;
90	u_int32_t		sc_freq;
91
92	struct device		*sc_child;
93
94	char			sc_dying;
95};
96
97int	udsbr_req(struct udsbr_softc *sc, int ureq, int value, int index);
98void	udsbr_start(struct udsbr_softc *sc);
99void	udsbr_stop(struct udsbr_softc *sc);
100void	udsbr_setfreq(struct udsbr_softc *sc, int freq);
101int	udsbr_status(struct udsbr_softc *sc);
102
103USB_DECLARE_DRIVER(udsbr);
104
105USB_MATCH(udsbr)
106{
107	USB_MATCH_START(udsbr, uaa);
108
109	DPRINTFN(50,("udsbr_match\n"));
110
111	if (uaa->iface != NULL)
112		return (UMATCH_NONE);
113
114	if (uaa->vendor != USB_VENDOR_CYPRESS ||
115	    uaa->product != USB_PRODUCT_CYPRESS_FMRADIO)
116		return (UMATCH_NONE);
117	return (UMATCH_VENDOR_PRODUCT);
118}
119
120USB_ATTACH(udsbr)
121{
122	USB_ATTACH_START(udsbr, sc, uaa);
123	usbd_device_handle	dev = uaa->device;
124	usbd_interface_handle	iface;
125	char			devinfo[1024];
126	usbd_status		err;
127
128	DPRINTFN(10,("udsbr_attach: sc=%p\n", sc));
129
130	usbd_devinfo(dev, 0, devinfo);
131	USB_ATTACH_SETUP;
132	printf("%s: %s\n", USBDEVNAME(sc->sc_dev), devinfo);
133
134	err = usbd_set_config_no(dev, UDSBR_CONFIG_NO, 1);
135	if (err) {
136		printf("%s: setting config no failed\n",
137		    USBDEVNAME(sc->sc_dev));
138		USB_ATTACH_ERROR_RETURN;
139	}
140
141	err = usbd_device2interface_handle(dev, UDSBR_IFACE_IDX, &iface);
142	if (err) {
143		printf("%s: getting interface handle failed\n",
144		    USBDEVNAME(sc->sc_dev));
145		USB_ATTACH_ERROR_RETURN;
146	}
147
148	sc->sc_udev = dev;
149	sc->sc_iface = iface;
150
151	DPRINTFN(10, ("udsbr_attach: %p\n", sc->sc_udev));
152
153	usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev,
154			   USBDEV(sc->sc_dev));
155
156	sc->sc_child = radio_attach_mi(&udsbr_hw_if, sc, USBDEV(sc->sc_dev));
157
158	USB_ATTACH_SUCCESS_RETURN;
159}
160
161USB_DETACH(udsbr)
162{
163	USB_DETACH_START(udsbr, sc);
164	int rv = 0;
165
166	if (sc->sc_child != NULL)
167		rv = config_detach(sc->sc_child, flags);
168
169	usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev,
170			   USBDEV(sc->sc_dev));
171
172	return (rv);
173}
174
175int
176udsbr_activate(device_ptr_t self, enum devact act)
177{
178	struct udsbr_softc *sc = (struct udsbr_softc *)self;
179	int rv = 0;
180
181	switch (act) {
182	case DVACT_ACTIVATE:
183		return (EOPNOTSUPP);
184		break;
185
186	case DVACT_DEACTIVATE:
187		sc->sc_dying = 1;
188		if (sc->sc_child != NULL)
189			rv = config_deactivate(sc->sc_child);
190		break;
191	}
192	return (rv);
193}
194
195int
196udsbr_req(struct udsbr_softc *sc, int ureq, int value, int index)
197{
198	usb_device_request_t req;
199	usbd_status err;
200	u_char data;
201
202	req.bmRequestType = UT_READ_VENDOR_DEVICE;
203	req.bRequest = ureq;
204	USETW(req.wValue, value);
205	USETW(req.wIndex, index);
206	USETW(req.wLength, 1);
207	err = usbd_do_request(sc->sc_udev, &req, &data);
208	if (err) {
209		printf("%s: request failed err=%d\n", USBDEVNAME(sc->sc_dev),
210		       err);
211	}
212	return !(data & 1);
213}
214
215void
216udsbr_start(struct udsbr_softc *sc)
217{
218	(void)udsbr_req(sc, 0x00, 0x0000, 0x00c7);
219	(void)udsbr_req(sc, 0x02, 0x0001, 0x0000);
220}
221
222void
223udsbr_stop(struct udsbr_softc *sc)
224{
225	(void)udsbr_req(sc, 0x00, 0x0016, 0x001c);
226	(void)udsbr_req(sc, 0x02, 0x0000, 0x0000);
227}
228
229void
230udsbr_setfreq(struct udsbr_softc *sc, int freq)
231{
232	DPRINTF(("udsbr_setfreq: setfreq=%d\n", freq));
233	freq = freq * 80 / 1000 + 856;
234	(void)udsbr_req(sc, 0x01, (freq >> 8) & 0xff, freq & 0xff);
235	(void)udsbr_req(sc, 0x00, 0x0096, 0x00b7);
236	(void)udsbr_req(sc, 0x00, 0x0000, 0x0024);
237}
238
239int
240udsbr_status(struct udsbr_softc *sc)
241{
242	return (udsbr_req(sc, 0x00, 0x0000, 0x0024));
243}
244
245
246int
247udsbr_get_info(void *v, struct radio_info *ri)
248{
249	struct udsbr_softc *sc = v;
250
251	ri->mute = sc->sc_mute;
252	ri->volume = sc->sc_vol ? 255 : 0;
253	ri->caps = RADIO_CAPS_DETECT_STEREO;
254	ri->rfreq = 0;
255	ri->lock = 0;
256	ri->freq = sc->sc_freq;
257	ri->info = udsbr_status(sc) ? RADIO_INFO_STEREO : 0;
258
259	return (0);
260}
261
262int
263udsbr_set_info(void *v, struct radio_info *ri)
264{
265	struct udsbr_softc *sc = v;
266
267	sc->sc_mute = ri->mute != 0;
268	sc->sc_vol = ri->volume != 0;
269	sc->sc_freq = ri->freq;
270	udsbr_setfreq(sc, sc->sc_freq);
271
272	if (sc->sc_mute || sc->sc_vol == 0)
273		udsbr_stop(sc);
274	else
275		udsbr_start(sc);
276
277	return (0);
278}
279