summaryrefslogtreecommitdiffstats
path: root/drivers/media/usb/dvb-usb/dtv5100.c
blob: 2fa2abd3e726317b848974cae66f941257db430c (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
/*
 * DVB USB Linux driver for AME DTV-5100 USB2.0 DVB-T
 *
 * Copyright (C) 2008  Antoine Jacquet <royale@zerezo.com>
 * http://royale.zerezo.com/dtv5100/
 *
 * Inspired by gl861.c and au6610.c drivers
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */

#include "dtv5100.h"
#include "zl10353.h"
#include "qt1010.h"

/* debug */
static int dvb_usb_dtv5100_debug;
module_param_named(debug, dvb_usb_dtv5100_debug, int, 0644);
MODULE_PARM_DESC(debug, "set debugging level" DVB_USB_DEBUG_STATUS);
DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);

struct dtv5100_state {
	unsigned char data[80];
};

static int dtv5100_i2c_msg(struct dvb_usb_device *d, u8 addr,
			   u8 *wbuf, u16 wlen, u8 *rbuf, u16 rlen)
{
	struct dtv5100_state *st = d->priv;
	u8 request;
	u8 type;
	u16 value;
	u16 index;

	switch (wlen) {
	case 1:
		/* write { reg }, read { value } */
		request = (addr == DTV5100_DEMOD_ADDR ? DTV5100_DEMOD_READ :
							DTV5100_TUNER_READ);
		type = USB_TYPE_VENDOR | USB_DIR_IN;
		value = 0;
		break;
	case 2:
		/* write { reg, value } */
		request = (addr == DTV5100_DEMOD_ADDR ? DTV5100_DEMOD_WRITE :
							DTV5100_TUNER_WRITE);
		type = USB_TYPE_VENDOR | USB_DIR_OUT;
		value = wbuf[1];
		break;
	default:
		warn("wlen = %x, aborting.", wlen);
		return -EINVAL;
	}
	index = (addr << 8) + wbuf[0];

	memcpy(st->data, rbuf, rlen);
	msleep(1); /* avoid I2C errors */
	return usb_control_msg(d->udev, usb_rcvctrlpipe(d->udev, 0), request,
			       type, value, index, st->data, rlen,
			       DTV5100_USB_TIMEOUT);
}

/* I2C */
static int dtv5100_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[],
			    int num)
{
	struct dvb_usb_device *d = i2c_get_adapdata(adap);
	int i;

	if (num > 2)
		return -EINVAL;

	if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
		return -EAGAIN;

	for (i = 0; i < num; i++) {
		/* write/read request */
		if (i+1 < num && (msg[i+1].flags & I2C_M_RD)) {
			if (dtv5100_i2c_msg(d, msg[i].addr, msg[i].buf,
					    msg[i].len, msg[i+1].buf,
					    msg[i+1].len) < 0)
				break;
			i++;
		} else if (dtv5100_i2c_msg(d, msg[i].addr, msg[i].buf,
					   msg[i].len, NULL, 0) < 0)
				break;
	}

	mutex_unlock(&d->i2c_mutex);
	return i;
}

static u32 dtv5100_i2c_func(struct i2c_adapter *adapter)
{
	return I2C_FUNC_I2C;
}

static struct i2c_algorithm dtv5100_i2c_algo = {
	.master_xfer   = dtv5100_i2c_xfer,
	.functionality = dtv5100_i2c_func,
};

/* Callbacks for DVB USB */
static struct zl10353_config dtv5100_zl10353_config = {
	.demod_address = DTV5100_DEMOD_ADDR,
	.no_tuner = 1,
	.parallel_ts = 1,
};

static int dtv5100_frontend_attach(struct dvb_usb_adapter *adap)
{
	adap->fe_adap[0].fe = dvb_attach(zl10353_attach, &dtv5100_zl10353_config,
			      &adap->dev->i2c_adap);
	if (adap->fe_adap[0].fe == NULL)
		return -EIO;

	/* disable i2c gate, or it won't work... is this safe? */
	adap->fe_adap[0].fe->ops.i2c_gate_ctrl = NULL;

	return 0;
}

static struct qt1010_config dtv5100_qt1010_config = {
	.i2c_address = DTV5100_TUNER_ADDR
};

static int dtv5100_tuner_attach(struct dvb_usb_adapter *adap)
{
	return dvb_attach(qt1010_attach,
			  adap->fe_adap[0].fe, &adap->dev->i2c_adap,
			  &dtv5100_qt1010_config) == NULL ? -ENODEV : 0;
}

/* DVB USB Driver stuff */
static struct dvb_usb_device_properties dtv5100_properties;

static int dtv5100_probe(struct usb_interface *intf,
			 const struct usb_device_id *id)
{
	int i, ret;
	struct usb_device *udev = interface_to_usbdev(intf);

	/* initialize non qt1010/zl10353 part? */
	for (i = 0; dtv5100_init[i].request; i++) {
		ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
				      dtv5100_init[i].request,
				      USB_TYPE_VENDOR | USB_DIR_OUT,
				      dtv5100_init[i].value,
				      dtv5100_init[i].index, NULL, 0,
				      DTV5100_USB_TIMEOUT);
		if (ret)
			return ret;
	}

	ret = dvb_usb_device_init(intf, &dtv5100_properties,
				  THIS_MODULE, NULL, adapter_nr);
	if (ret)
		return ret;

	return 0;
}

static struct usb_device_id dtv5100_table[] = {
	{ USB_DEVICE(0x06be, 0xa232) },
	{ }		/* Terminating entry */
};
MODULE_DEVICE_TABLE(usb, dtv5100_table);

static struct dvb_usb_device_properties dtv5100_properties = {
	.caps = DVB_USB_IS_AN_I2C_ADAPTER,
	.usb_ctrl = DEVICE_SPECIFIC,

	.size_of_priv = sizeof(struct dtv5100_state),

	.num_adapters = 1,
	.adapter = {{
		.num_frontends = 1,
		.fe = {{
		.frontend_attach = dtv5100_frontend_attach,
		.tuner_attach    = dtv5100_tuner_attach,

		.stream = {
			.type = USB_BULK,
			.count = 8,
			.endpoint = 0x82,
			.u = {
				.bulk = {
					.buffersize = 4096,
				}
			}
		},
		}},
	} },

	.i2c_algo = &dtv5100_i2c_algo,

	.num_device_descs = 1,
	.devices = {
		{
			.name = "AME DTV-5100 USB2.0 DVB-T",
			.cold_ids = { NULL },
			.warm_ids = { &dtv5100_table[0], NULL },
		},
	}
};

static struct usb_driver dtv5100_driver = {
	.name		= "dvb_usb_dtv5100",
	.probe		= dtv5100_probe,
	.disconnect	= dvb_usb_device_exit,
	.id_table	= dtv5100_table,
};

module_usb_driver(dtv5100_driver);

MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");