1/*
2 * DVB USB Linux driver for Alcor Micro AU6610 DVB-T USB2.0.
3 *
4 * Copyright (C) 2006 Antti Palosaari <crope@iki.fi>
5 *
6 *    This program is free software; you can redistribute it and/or modify
7 *    it under the terms of the GNU General Public License as published by
8 *    the Free Software Foundation; either version 2 of the License, or
9 *    (at your option) any later version.
10 *
11 *    This program is distributed in the hope that it will be useful,
12 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
13 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14 *    GNU General Public License for more details.
15 *
16 *    You should have received a copy of the GNU General Public License
17 *    along with this program; if not, write to the Free Software
18 *    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 */
20
21#include "au6610.h"
22#include "zl10353.h"
23#include "qt1010.h"
24
25DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
26
27static int au6610_usb_msg(struct dvb_usb_device *d, u8 operation, u8 addr,
28			  u8 *wbuf, u16 wlen, u8 *rbuf, u16 rlen)
29{
30	int ret;
31	u16 index;
32	u8 *usb_buf;
33
34	/*
35	 * allocate enough for all known requests,
36	 * read returns 5 and write 6 bytes
37	 */
38	usb_buf = kmalloc(6, GFP_KERNEL);
39	if (!usb_buf)
40		return -ENOMEM;
41
42	switch (wlen) {
43	case 1:
44		index = wbuf[0] << 8;
45		break;
46	case 2:
47		index = wbuf[0] << 8;
48		index += wbuf[1];
49		break;
50	default:
51		dev_err(&d->udev->dev, "%s: wlen=%d, aborting\n",
52				KBUILD_MODNAME, wlen);
53		ret = -EINVAL;
54		goto error;
55	}
56
57	ret = usb_control_msg(d->udev, usb_rcvctrlpipe(d->udev, 0), operation,
58			      USB_TYPE_VENDOR|USB_DIR_IN, addr << 1, index,
59			      usb_buf, 6, AU6610_USB_TIMEOUT);
60
61	dvb_usb_dbg_usb_control_msg(d->udev, operation,
62			(USB_TYPE_VENDOR|USB_DIR_IN), addr << 1, index,
63			usb_buf, 6);
64
65	if (ret < 0)
66		goto error;
67
68	switch (operation) {
69	case AU6610_REQ_I2C_READ:
70	case AU6610_REQ_USB_READ:
71		/* requested value is always 5th byte in buffer */
72		rbuf[0] = usb_buf[4];
73	}
74error:
75	kfree(usb_buf);
76	return ret;
77}
78
79static int au6610_i2c_msg(struct dvb_usb_device *d, u8 addr,
80			  u8 *wbuf, u16 wlen, u8 *rbuf, u16 rlen)
81{
82	u8 request;
83	u8 wo = (rbuf == NULL || rlen == 0); /* write-only */
84
85	if (wo) {
86		request = AU6610_REQ_I2C_WRITE;
87	} else { /* rw */
88		request = AU6610_REQ_I2C_READ;
89	}
90
91	return au6610_usb_msg(d, request, addr, wbuf, wlen, rbuf, rlen);
92}
93
94
95/* I2C */
96static int au6610_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[],
97			   int num)
98{
99	struct dvb_usb_device *d = i2c_get_adapdata(adap);
100	int i;
101
102	if (num > 2)
103		return -EINVAL;
104
105	if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
106		return -EAGAIN;
107
108	for (i = 0; i < num; i++) {
109		/* write/read request */
110		if (i+1 < num && (msg[i+1].flags & I2C_M_RD)) {
111			if (au6610_i2c_msg(d, msg[i].addr, msg[i].buf,
112					   msg[i].len, msg[i+1].buf,
113					   msg[i+1].len) < 0)
114				break;
115			i++;
116		} else if (au6610_i2c_msg(d, msg[i].addr, msg[i].buf,
117					       msg[i].len, NULL, 0) < 0)
118				break;
119	}
120
121	mutex_unlock(&d->i2c_mutex);
122	return i;
123}
124
125
126static u32 au6610_i2c_func(struct i2c_adapter *adapter)
127{
128	return I2C_FUNC_I2C;
129}
130
131static struct i2c_algorithm au6610_i2c_algo = {
132	.master_xfer   = au6610_i2c_xfer,
133	.functionality = au6610_i2c_func,
134};
135
136/* Callbacks for DVB USB */
137static struct zl10353_config au6610_zl10353_config = {
138	.demod_address = 0x0f,
139	.no_tuner = 1,
140	.parallel_ts = 1,
141};
142
143static int au6610_zl10353_frontend_attach(struct dvb_usb_adapter *adap)
144{
145	adap->fe[0] = dvb_attach(zl10353_attach, &au6610_zl10353_config,
146			&adap_to_d(adap)->i2c_adap);
147	if (adap->fe[0] == NULL)
148		return -ENODEV;
149
150	return 0;
151}
152
153static struct qt1010_config au6610_qt1010_config = {
154	.i2c_address = 0x62
155};
156
157static int au6610_qt1010_tuner_attach(struct dvb_usb_adapter *adap)
158{
159	return dvb_attach(qt1010_attach, adap->fe[0],
160			&adap_to_d(adap)->i2c_adap,
161			&au6610_qt1010_config) == NULL ? -ENODEV : 0;
162}
163
164static int au6610_init(struct dvb_usb_device *d)
165{
166	/* TODO: this functionality belongs likely to the streaming control */
167	/* bInterfaceNumber 0, bAlternateSetting 5 */
168	return usb_set_interface(d->udev, 0, 5);
169}
170
171static struct dvb_usb_device_properties au6610_props = {
172	.driver_name = KBUILD_MODNAME,
173	.owner = THIS_MODULE,
174	.adapter_nr = adapter_nr,
175
176	.i2c_algo = &au6610_i2c_algo,
177	.frontend_attach = au6610_zl10353_frontend_attach,
178	.tuner_attach = au6610_qt1010_tuner_attach,
179	.init = au6610_init,
180
181	.num_adapters = 1,
182	.adapter = {
183		{
184			.stream = DVB_USB_STREAM_ISOC(0x82, 5, 40, 942, 1),
185		},
186	},
187};
188
189static const struct usb_device_id au6610_id_table[] = {
190	{ DVB_USB_DEVICE(USB_VID_ALCOR_MICRO, USB_PID_SIGMATEK_DVB_110,
191		&au6610_props, "Sigmatek DVB-110", NULL) },
192	{ }
193};
194MODULE_DEVICE_TABLE(usb, au6610_id_table);
195
196static struct usb_driver au6610_driver = {
197	.name = KBUILD_MODNAME,
198	.id_table = au6610_id_table,
199	.probe = dvb_usbv2_probe,
200	.disconnect = dvb_usbv2_disconnect,
201	.suspend = dvb_usbv2_suspend,
202	.resume = dvb_usbv2_resume,
203	.reset_resume = dvb_usbv2_reset_resume,
204	.no_dynamic_id = 1,
205	.soft_unbind = 1,
206};
207
208module_usb_driver(au6610_driver);
209
210MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
211MODULE_DESCRIPTION("Driver for Alcor Micro AU6610 DVB-T USB2.0");
212MODULE_VERSION("0.1");
213MODULE_LICENSE("GPL");
214