1 /* DVB USB compliant linux driver for Sigmatek DVB-110 DVB-T USB2.0 receiver
2 *
3 * Copyright (C) 2006 Antti Palosaari <crope@iki.fi>
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the Free
7 * Software Foundation, version 2.
8 *
9 * see Documentation/dvb/README.dvb-usb for more information
10 */
11
12 #include "au6610.h"
13
14 #include "zl10353.h"
15 #include "qt1010.h"
16
17 /* debug */
18 static int dvb_usb_au6610_debug;
19 module_param_named(debug, dvb_usb_au6610_debug, int, 0644);
20 MODULE_PARM_DESC(debug, "set debugging level (1=rc (or-able))." DVB_USB_DEBUG_STATUS);
21
22 static int au6610_usb_msg(struct dvb_usb_device *d, u8 operation, u8 addr,
23 u8 *wbuf, u16 wlen, u8 *rbuf, u16 rlen)
24 {
25 int ret;
26 u16 index;
27 u8 usb_buf[6]; /* enough for all known requests,
28 read returns 5 and write 6 bytes */
29 switch (wlen) {
30 case 1:
31 index = wbuf[0] << 8;
32 break;
33 case 2:
34 index = wbuf[0] << 8;
35 index += wbuf[1];
36 break;
37 default:
38 warn("wlen = %x, aborting.", wlen);
39 return -EINVAL;
40 }
41
42 ret = usb_control_msg(d->udev, usb_rcvctrlpipe(d->udev, 0), operation,
43 USB_TYPE_VENDOR|USB_DIR_IN, addr << 1, index, usb_buf,
44 sizeof(usb_buf), AU6610_USB_TIMEOUT);
45
46 if (ret < 0)
47 return ret;
48
49 switch (operation) {
50 case AU6610_REQ_I2C_READ:
51 case AU6610_REQ_USB_READ:
52 /* requested value is always 5th byte in buffer */
53 rbuf[0] = usb_buf[4];
54 }
55
56 return ret;
57 }
58
59 static int au6610_i2c_msg(struct dvb_usb_device *d, u8 addr,
60 u8 *wbuf, u16 wlen, u8 *rbuf, u16 rlen)
61 {
62 u8 request;
63 u8 wo = (rbuf == NULL || rlen == 0); /* write-only */
64
65 if (wo) {
66 request = AU6610_REQ_I2C_WRITE;
67 } else { /* rw */
68 request = AU6610_REQ_I2C_READ;
69 }
70
71 return au6610_usb_msg(d, request, addr, wbuf, wlen, rbuf, rlen);
72 }
73
74
75 /* I2C */
76 static int au6610_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[],
77 int num)
78 {
79 struct dvb_usb_device *d = i2c_get_adapdata(adap);
80 int i;
81
82 if (num > 2)
83 return -EINVAL;
84
85 if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
86 return -EAGAIN;
87
88 for (i = 0; i < num; i++) {
89 /* write/read request */
90 if (i+1 < num && (msg[i+1].flags & I2C_M_RD)) {
91 if (au6610_i2c_msg(d, msg[i].addr, msg[i].buf,
92 msg[i].len, msg[i+1].buf,
93 msg[i+1].len) < 0)
94 break;
95 i++;
96 } else if (au6610_i2c_msg(d, msg[i].addr, msg[i].buf,
97 msg[i].len, NULL, 0) < 0)
98 break;
99 }
100
101 mutex_unlock(&d->i2c_mutex);
102 return i;
103 }
104
105
106 static u32 au6610_i2c_func(struct i2c_adapter *adapter)
107 {
108 return I2C_FUNC_I2C;
109 }
110
111 static struct i2c_algorithm au6610_i2c_algo = {
112 .master_xfer = au6610_i2c_xfer,
113 .functionality = au6610_i2c_func,
114 };
115
116 /* Callbacks for DVB USB */
117 static int au6610_identify_state(struct usb_device *udev,
118 struct dvb_usb_device_properties *props,
119 struct dvb_usb_device_description **desc,
120 int *cold)
121 {
122 *cold = 0;
123 return 0;
124 }
125
126 static struct zl10353_config au6610_zl10353_config = {
127 .demod_address = 0x0f,
128 .no_tuner = 1,
129 .parallel_ts = 1,
130 };
131
132 static int au6610_zl10353_frontend_attach(struct dvb_usb_adapter *adap)
133 {
134 if ((adap->fe = dvb_attach(zl10353_attach, &au6610_zl10353_config,
135 &adap->dev->i2c_adap)) != NULL) {
136 return 0;
137 }
138
139 return -EIO;
140 }
141
142 static struct qt1010_config au6610_qt1010_config = {
143 .i2c_address = 0x62
144 };
145
146 static int au6610_qt1010_tuner_attach(struct dvb_usb_adapter *adap)
147 {
148 return dvb_attach(qt1010_attach,
149 adap->fe, &adap->dev->i2c_adap,
150 &au6610_qt1010_config) == NULL ? -ENODEV : 0;
151 }
152
153 /* DVB USB Driver stuff */
154 static struct dvb_usb_device_properties au6610_properties;
155
156 static int au6610_probe(struct usb_interface *intf,
157 const struct usb_device_id *id)
158 {
159 struct dvb_usb_device *d;
160 struct usb_host_interface *alt;
161 int ret;
162
163 if (intf->num_altsetting < AU6610_ALTSETTING_COUNT)
164 return -ENODEV;
165
166 if ((ret = dvb_usb_device_init(intf, &au6610_properties, THIS_MODULE, &d)) == 0) {
167 alt = usb_altnum_to_altsetting(intf, AU6610_ALTSETTING);
168
169 if (alt == NULL) {
170 deb_rc("no alt found!\n");
171 return -ENODEV;
172 }
173 ret = usb_set_interface(d->udev, alt->desc.bInterfaceNumber,
174 alt->desc.bAlternateSetting);
175 }
176
177 return ret;
178 }
179
180
181 static struct usb_device_id au6610_table [] = {
182 { USB_DEVICE(USB_VID_ALCOR_MICRO, USB_PID_SIGMATEK_DVB_110) },
183 { } /* Terminating entry */
184 };
185 MODULE_DEVICE_TABLE (usb, au6610_table);
186
187 static struct dvb_usb_device_properties au6610_properties = {
188 .caps = DVB_USB_IS_AN_I2C_ADAPTER,
189 .usb_ctrl = DEVICE_SPECIFIC,
190 .size_of_priv = 0,
191 .identify_state = au6610_identify_state,
192 .num_adapters = 1,
193 .adapter = {
194 {
195 .frontend_attach = au6610_zl10353_frontend_attach,
196 .tuner_attach = au6610_qt1010_tuner_attach,
197
198 .stream = {
199 .type = USB_ISOC,
200 .count = 5,
201 .endpoint = 0x82,
202 .u = {
203 .isoc = {
204 .framesperurb = 40,
205 .framesize = 942, /* maximum packet size */
206 .interval = 1.25, /* 125 us */
207 }
208 }
209 },
210 }
211 },
212 .i2c_algo = &au6610_i2c_algo,
213 .num_device_descs = 1,
214 .devices = {
215 {
216 "Sigmatek DVB-110 DVB-T USB2.0",
217 { &au6610_table[0], NULL },
218 { NULL },
219 },
220 }
221 };
222
223 static struct usb_driver au6610_driver = {
224 .name = "dvb_usb_au6610",
225 .probe = au6610_probe,
226 .disconnect = dvb_usb_device_exit,
227 .id_table = au6610_table,
228 };
229
230 /* module stuff */
231 static int __init au6610_module_init(void)
232 {
233 int ret;
234
235 if ((ret = usb_register(&au6610_driver))) {
236 err("usb_register failed. Error number %d", ret);
237 return ret;
238 }
239
240 return 0;
241 }
242
243 static void __exit au6610_module_exit(void)
244 {
245 /* deregister this driver from the USB subsystem */
246 usb_deregister(&au6610_driver);
247 }
248
249 module_init (au6610_module_init);
250 module_exit (au6610_module_exit);
251
252 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
253 MODULE_DESCRIPTION("Driver Sigmatek DVB-110 DVB-T USB2.0 / AU6610");
254 MODULE_VERSION("0.1");
255 MODULE_LICENSE("GPL");
256
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