18e0b16fb2a9ce012109809c0ae8bc15545f9e94
[pandora-kernel.git] / drivers / media / dvb / dvb-usb / au6610.c
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 (mutex_lock_interruptible(&d->i2c_mutex) < 0)
83                 return -EAGAIN;
84
85         if (num > 2)
86                 return -EINVAL;
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");