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