1 /* DVB USB compliant linux driver for GL861 USB2.0 devices.
2 *
3 * This program is free software; you can redistribute it and/or modify it
4 * under the terms of the GNU General Public License as published by the Free
5 * Software Foundation, version 2.
6 *
7 * see Documentation/dvb/README.dvb-usb for more information
8 */
9 #include "gl861.h"
10
11 #include "zl10353.h"
12 #include "qt1010.h"
13
14 /* debug */
15 static int dvb_usb_gl861_debug;
16 module_param_named(debug,dvb_usb_gl861_debug, int, 0644);
17 MODULE_PARM_DESC(debug, "set debugging level (1=rc (or-able))." DVB_USB_DEBUG_STATUS);
18
19 static int gl861_i2c_msg(struct dvb_usb_device *d, u8 addr,
20 u8 *wbuf, u16 wlen, u8 *rbuf, u16 rlen)
21 {
22 u16 index;
23 u16 value = addr << (8 + 1);
24 int wo = (rbuf == NULL || rlen == 0); /* write-only */
25 u8 req, type;
26
27 if (wo) {
28 req = GL861_REQ_I2C_WRITE;
29 type = GL861_WRITE;
30 } else { /* rw */
31 req = GL861_REQ_I2C_READ;
32 type = GL861_READ;
33 }
34
35 switch (wlen) {
36 case 1:
37 index = wbuf[0];
38 break;
39 case 2:
40 index = wbuf[0];
41 value = value + wbuf[1];
42 break;
43 default:
44 warn("wlen = %x, aborting.", wlen);
45 return -EINVAL;
46 }
47
48 return usb_control_msg(d->udev, usb_rcvctrlpipe(d->udev, 0), req, type,
49 value, index, rbuf, rlen, 2000);
50 }
51
52 /* I2C */
53 static int gl861_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[],
54 int num)
55 {
56 struct dvb_usb_device *d = i2c_get_adapdata(adap);
57 int i;
58
59 if (num > 2)
60 return -EINVAL;
61
62 if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
63 return -EAGAIN;
64
65 for (i = 0; i < num; i++) {
66 /* write/read request */
67 if (i+1 < num && (msg[i+1].flags & I2C_M_RD)) {
68 if (gl861_i2c_msg(d, msg[i].addr, msg[i].buf,
69 msg[i].len, msg[i+1].buf, msg[i+1].len) < 0)
70 break;
71 i++;
72 } else
73 if (gl861_i2c_msg(d, msg[i].addr, msg[i].buf,
74 msg[i].len, NULL, 0) < 0)
75 break;
76 }
77
78 mutex_unlock(&d->i2c_mutex);
79 return i;
80 }
81
82 static u32 gl861_i2c_func(struct i2c_adapter *adapter)
83 {
84 return I2C_FUNC_I2C;
85 }
86
87 static struct i2c_algorithm gl861_i2c_algo = {
88 .master_xfer = gl861_i2c_xfer,
89 .functionality = gl861_i2c_func,
90 };
91
92 /* Callbacks for DVB USB */
93 static int gl861_identify_state(struct usb_device *udev,
94 struct dvb_usb_device_properties *props,
95 struct dvb_usb_device_description **desc,
96 int *cold)
97 {
98 *cold = 0;
99
100 return 0;
101 }
102
103 static struct zl10353_config gl861_zl10353_config = {
104 .demod_address = 0x0f,
105 .no_tuner = 1,
106 .parallel_ts = 1,
107 };
108
109 static int gl861_frontend_attach(struct dvb_usb_adapter *adap)
110 {
111 if ((adap->fe = dvb_attach(zl10353_attach, &gl861_zl10353_config,
112 &adap->dev->i2c_adap)) != NULL) {
113 return 0;
114 }
115
116 return -EIO;
117 }
118
119 static struct qt1010_config gl861_qt1010_config = {
120 .i2c_address = 0x62
121 };
122
123 static int gl861_tuner_attach(struct dvb_usb_adapter *adap)
124 {
125 return dvb_attach(qt1010_attach,
126 adap->fe, &adap->dev->i2c_adap,
127 &gl861_qt1010_config) == NULL ? -ENODEV : 0;
128 }
129
130 /* DVB USB Driver stuff */
131 static struct dvb_usb_device_properties gl861_properties;
132
133 static int gl861_probe(struct usb_interface *intf,
134 const struct usb_device_id *id)
135 {
136 struct dvb_usb_device *d;
137 struct usb_host_interface *alt;
138 int ret;
139
140 if (intf->num_altsetting < 2)
141 return -ENODEV;
142
143 if ((ret = dvb_usb_device_init(intf, &gl861_properties, THIS_MODULE, &d)) == 0) {
144 alt = usb_altnum_to_altsetting(intf, 0);
145
146 if (alt == NULL) {
147 deb_rc("not alt found!\n");
148 return -ENODEV;
149 }
150
151 ret = usb_set_interface(d->udev, alt->desc.bInterfaceNumber,
152 alt->desc.bAlternateSetting);
153 }
154
155 return ret;
156 }
157
158 static struct usb_device_id gl861_table [] = {
159 { USB_DEVICE(USB_VID_MSI, USB_PID_MSI_MEGASKY580_55801) },
160 { USB_DEVICE(USB_VID_ALINK, USB_VID_ALINK_DTU) },
161 { } /* Terminating entry */
162 };
163 MODULE_DEVICE_TABLE (usb, gl861_table);
164
165 static struct dvb_usb_device_properties gl861_properties = {
166 .caps = DVB_USB_IS_AN_I2C_ADAPTER,
167 .usb_ctrl = DEVICE_SPECIFIC,
168
169 .size_of_priv = 0,
170
171 .identify_state = gl861_identify_state,
172 .num_adapters = 1,
173 .adapter = {{
174
175 .frontend_attach = gl861_frontend_attach,
176 .tuner_attach = gl861_tuner_attach,
177
178 .stream = {
179 .type = USB_BULK,
180 .count = 7,
181 .endpoint = 0x81,
182 .u = {
183 .bulk = {
184 .buffersize = 512,
185 }
186 }
187 },
188 }},
189 .i2c_algo = &gl861_i2c_algo,
190
191 .num_device_descs = 2,
192 .devices = {
193 { "MSI Mega Sky 55801 DVB-T USB2.0",
194 { &gl861_table[0], NULL },
195 { NULL },
196 },
197 { "A-LINK DTU DVB-T USB2.0",
198 { &gl861_table[1], NULL },
199 { NULL },
200 },
201 }
202 };
203
204 static struct usb_driver gl861_driver = {
205 .name = "dvb_usb_gl861",
206 .probe = gl861_probe,
207 .disconnect = dvb_usb_device_exit,
208 .id_table = gl861_table,
209 };
210
211 /* module stuff */
212 static int __init gl861_module_init(void)
213 {
214 int ret;
215
216 if ((ret = usb_register(&gl861_driver))) {
217 err("usb_register failed. Error number %d", ret);
218 return ret;
219 }
220
221 return 0;
222 }
223
224 static void __exit gl861_module_exit(void)
225 {
226 /* deregister this driver from the USB subsystem */
227 usb_deregister(&gl861_driver);
228 }
229
230 module_init (gl861_module_init);
231 module_exit (gl861_module_exit);
232
233 MODULE_AUTHOR("Carl Lundqvist <comabug@gmail.com>");
234 MODULE_DESCRIPTION("Driver MSI Mega Sky 580 DVB-T USB2.0 / GL861");
235 MODULE_VERSION("0.1");
236 MODULE_LICENSE("GPL");
237
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