[go: nahoru, domu]
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
14DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
15
16static int gl861_i2c_msg(struct dvb_usb_device *d, u8 addr,
17			 u8 *wbuf, u16 wlen, u8 *rbuf, u16 rlen)
18{
19	u16 index;
20	u16 value = addr << (8 + 1);
21	int wo = (rbuf == NULL || rlen == 0); /* write-only */
22	u8 req, type;
23
24	if (wo) {
25		req = GL861_REQ_I2C_WRITE;
26		type = GL861_WRITE;
27	} else { /* rw */
28		req = GL861_REQ_I2C_READ;
29		type = GL861_READ;
30	}
31
32	switch (wlen) {
33	case 1:
34		index = wbuf[0];
35		break;
36	case 2:
37		index = wbuf[0];
38		value = value + wbuf[1];
39		break;
40	default:
41		dev_err(&d->udev->dev, "%s: wlen=%d, aborting\n",
42				KBUILD_MODNAME, wlen);
43		return -EINVAL;
44	}
45
46	msleep(1); /* avoid I2C errors */
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 */
53static 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
82static u32 gl861_i2c_func(struct i2c_adapter *adapter)
83{
84	return I2C_FUNC_I2C;
85}
86
87static struct i2c_algorithm gl861_i2c_algo = {
88	.master_xfer   = gl861_i2c_xfer,
89	.functionality = gl861_i2c_func,
90};
91
92/* Callbacks for DVB USB */
93static struct zl10353_config gl861_zl10353_config = {
94	.demod_address = 0x0f,
95	.no_tuner = 1,
96	.parallel_ts = 1,
97};
98
99static int gl861_frontend_attach(struct dvb_usb_adapter *adap)
100{
101
102	adap->fe[0] = dvb_attach(zl10353_attach, &gl861_zl10353_config,
103		&adap_to_d(adap)->i2c_adap);
104	if (adap->fe[0] == NULL)
105		return -EIO;
106
107	return 0;
108}
109
110static struct qt1010_config gl861_qt1010_config = {
111	.i2c_address = 0x62
112};
113
114static int gl861_tuner_attach(struct dvb_usb_adapter *adap)
115{
116	return dvb_attach(qt1010_attach,
117			  adap->fe[0], &adap_to_d(adap)->i2c_adap,
118			  &gl861_qt1010_config) == NULL ? -ENODEV : 0;
119}
120
121static int gl861_init(struct dvb_usb_device *d)
122{
123	/*
124	 * There is 2 interfaces. Interface 0 is for TV and interface 1 is
125	 * for HID remote controller. Interface 0 has 2 alternate settings.
126	 * For some reason we need to set interface explicitly, defaulted
127	 * as alternate setting 1?
128	 */
129	return usb_set_interface(d->udev, 0, 0);
130}
131
132/* DVB USB Driver stuff */
133static struct dvb_usb_device_properties gl861_props = {
134	.driver_name = KBUILD_MODNAME,
135	.owner = THIS_MODULE,
136	.adapter_nr = adapter_nr,
137
138	.i2c_algo = &gl861_i2c_algo,
139	.frontend_attach = gl861_frontend_attach,
140	.tuner_attach = gl861_tuner_attach,
141	.init = gl861_init,
142
143	.num_adapters = 1,
144	.adapter = {
145		{
146			.stream = DVB_USB_STREAM_BULK(0x81, 7, 512),
147		}
148	}
149};
150
151static const struct usb_device_id gl861_id_table[] = {
152	{ DVB_USB_DEVICE(USB_VID_MSI, USB_PID_MSI_MEGASKY580_55801,
153		&gl861_props, "MSI Mega Sky 55801 DVB-T USB2.0", NULL) },
154	{ DVB_USB_DEVICE(USB_VID_ALINK, USB_VID_ALINK_DTU,
155		&gl861_props, "A-LINK DTU DVB-T USB2.0", NULL) },
156	{ }
157};
158MODULE_DEVICE_TABLE(usb, gl861_id_table);
159
160static struct usb_driver gl861_usb_driver = {
161	.name = KBUILD_MODNAME,
162	.id_table = gl861_id_table,
163	.probe = dvb_usbv2_probe,
164	.disconnect = dvb_usbv2_disconnect,
165	.suspend = dvb_usbv2_suspend,
166	.resume = dvb_usbv2_resume,
167	.reset_resume = dvb_usbv2_reset_resume,
168	.no_dynamic_id = 1,
169	.soft_unbind = 1,
170};
171
172module_usb_driver(gl861_usb_driver);
173
174MODULE_AUTHOR("Carl Lundqvist <comabug@gmail.com>");
175MODULE_DESCRIPTION("Driver MSI Mega Sky 580 DVB-T USB2.0 / GL861");
176MODULE_VERSION("0.1");
177MODULE_LICENSE("GPL");
178