xref: /linux/drivers/media/usb/dvb-usb/dtv5100.c (revision db6d8d5fdf9537641c76ba7f32e02b4bcc600972)
1 /*
2  * DVB USB Linux driver for AME DTV-5100 USB2.0 DVB-T
3  *
4  * Copyright (C) 2008  Antoine Jacquet <royale@zerezo.com>
5  * http://royale.zerezo.com/dtv5100/
6  *
7  * Inspired by gl861.c and au6610.c drivers
8  *
9  * This program is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation; either version 2 of the License, or
12  * (at your option) any later version.
13  *
14  * This program is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17  * GNU General Public License for more details.
18  *
19  * You should have received a copy of the GNU General Public License
20  * along with this program; if not, write to the Free Software
21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
22  */
23 
24 #include "dtv5100.h"
25 #include "zl10353.h"
26 #include "qt1010.h"
27 
28 /* debug */
29 static int dvb_usb_dtv5100_debug;
30 module_param_named(debug, dvb_usb_dtv5100_debug, int, 0644);
31 MODULE_PARM_DESC(debug, "set debugging level" DVB_USB_DEBUG_STATUS);
32 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
33 
34 struct dtv5100_state {
35 	unsigned char data[80];
36 };
37 
38 static int dtv5100_i2c_msg(struct dvb_usb_device *d, u8 addr,
39 			   u8 *wbuf, u16 wlen, u8 *rbuf, u16 rlen)
40 {
41 	struct dtv5100_state *st = d->priv;
42 	u8 request;
43 	u8 type;
44 	u16 value;
45 	u16 index;
46 
47 	switch (wlen) {
48 	case 1:
49 		/* write { reg }, read { value } */
50 		request = (addr == DTV5100_DEMOD_ADDR ? DTV5100_DEMOD_READ :
51 							DTV5100_TUNER_READ);
52 		type = USB_TYPE_VENDOR | USB_DIR_IN;
53 		value = 0;
54 		break;
55 	case 2:
56 		/* write { reg, value } */
57 		request = (addr == DTV5100_DEMOD_ADDR ? DTV5100_DEMOD_WRITE :
58 							DTV5100_TUNER_WRITE);
59 		type = USB_TYPE_VENDOR | USB_DIR_OUT;
60 		value = wbuf[1];
61 		break;
62 	default:
63 		warn("wlen = %x, aborting.", wlen);
64 		return -EINVAL;
65 	}
66 	index = (addr << 8) + wbuf[0];
67 
68 	memcpy(st->data, rbuf, rlen);
69 	msleep(1); /* avoid I2C errors */
70 	return usb_control_msg(d->udev, usb_rcvctrlpipe(d->udev, 0), request,
71 			       type, value, index, st->data, rlen,
72 			       DTV5100_USB_TIMEOUT);
73 }
74 
75 /* I2C */
76 static int dtv5100_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[],
77 			    int num)
78 {
79 	struct dvb_usb_device *d = i2c_get_adapdata(adap);
80 	int i;
81 
82 	if (num > 2)
83 		return -EINVAL;
84 
85 	if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
86 		return -EAGAIN;
87 
88 	for (i = 0; i < num; i++) {
89 		/* write/read request */
90 		if (i+1 < num && (msg[i+1].flags & I2C_M_RD)) {
91 			if (dtv5100_i2c_msg(d, msg[i].addr, msg[i].buf,
92 					    msg[i].len, msg[i+1].buf,
93 					    msg[i+1].len) < 0)
94 				break;
95 			i++;
96 		} else if (dtv5100_i2c_msg(d, msg[i].addr, msg[i].buf,
97 					   msg[i].len, NULL, 0) < 0)
98 				break;
99 	}
100 
101 	mutex_unlock(&d->i2c_mutex);
102 	return i;
103 }
104 
105 static u32 dtv5100_i2c_func(struct i2c_adapter *adapter)
106 {
107 	return I2C_FUNC_I2C;
108 }
109 
110 static struct i2c_algorithm dtv5100_i2c_algo = {
111 	.master_xfer   = dtv5100_i2c_xfer,
112 	.functionality = dtv5100_i2c_func,
113 };
114 
115 /* Callbacks for DVB USB */
116 static struct zl10353_config dtv5100_zl10353_config = {
117 	.demod_address = DTV5100_DEMOD_ADDR,
118 	.no_tuner = 1,
119 	.parallel_ts = 1,
120 };
121 
122 static int dtv5100_frontend_attach(struct dvb_usb_adapter *adap)
123 {
124 	adap->fe_adap[0].fe = dvb_attach(zl10353_attach, &dtv5100_zl10353_config,
125 			      &adap->dev->i2c_adap);
126 	if (adap->fe_adap[0].fe == NULL)
127 		return -EIO;
128 
129 	/* disable i2c gate, or it won't work... is this safe? */
130 	adap->fe_adap[0].fe->ops.i2c_gate_ctrl = NULL;
131 
132 	return 0;
133 }
134 
135 static struct qt1010_config dtv5100_qt1010_config = {
136 	.i2c_address = DTV5100_TUNER_ADDR
137 };
138 
139 static int dtv5100_tuner_attach(struct dvb_usb_adapter *adap)
140 {
141 	return dvb_attach(qt1010_attach,
142 			  adap->fe_adap[0].fe, &adap->dev->i2c_adap,
143 			  &dtv5100_qt1010_config) == NULL ? -ENODEV : 0;
144 }
145 
146 /* DVB USB Driver stuff */
147 static struct dvb_usb_device_properties dtv5100_properties;
148 
149 static int dtv5100_probe(struct usb_interface *intf,
150 			 const struct usb_device_id *id)
151 {
152 	int i, ret;
153 	struct usb_device *udev = interface_to_usbdev(intf);
154 
155 	/* initialize non qt1010/zl10353 part? */
156 	for (i = 0; dtv5100_init[i].request; i++) {
157 		ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
158 				      dtv5100_init[i].request,
159 				      USB_TYPE_VENDOR | USB_DIR_OUT,
160 				      dtv5100_init[i].value,
161 				      dtv5100_init[i].index, NULL, 0,
162 				      DTV5100_USB_TIMEOUT);
163 		if (ret)
164 			return ret;
165 	}
166 
167 	ret = dvb_usb_device_init(intf, &dtv5100_properties,
168 				  THIS_MODULE, NULL, adapter_nr);
169 	if (ret)
170 		return ret;
171 
172 	return 0;
173 }
174 
175 static struct usb_device_id dtv5100_table[] = {
176 	{ USB_DEVICE(0x06be, 0xa232) },
177 	{ }		/* Terminating entry */
178 };
179 MODULE_DEVICE_TABLE(usb, dtv5100_table);
180 
181 static struct dvb_usb_device_properties dtv5100_properties = {
182 	.caps = DVB_USB_IS_AN_I2C_ADAPTER,
183 	.usb_ctrl = DEVICE_SPECIFIC,
184 
185 	.size_of_priv = sizeof(struct dtv5100_state),
186 
187 	.num_adapters = 1,
188 	.adapter = {{
189 		.num_frontends = 1,
190 		.fe = {{
191 		.frontend_attach = dtv5100_frontend_attach,
192 		.tuner_attach    = dtv5100_tuner_attach,
193 
194 		.stream = {
195 			.type = USB_BULK,
196 			.count = 8,
197 			.endpoint = 0x82,
198 			.u = {
199 				.bulk = {
200 					.buffersize = 4096,
201 				}
202 			}
203 		},
204 		}},
205 	} },
206 
207 	.i2c_algo = &dtv5100_i2c_algo,
208 
209 	.num_device_descs = 1,
210 	.devices = {
211 		{
212 			.name = "AME DTV-5100 USB2.0 DVB-T",
213 			.cold_ids = { NULL },
214 			.warm_ids = { &dtv5100_table[0], NULL },
215 		},
216 	}
217 };
218 
219 static struct usb_driver dtv5100_driver = {
220 	.name		= "dvb_usb_dtv5100",
221 	.probe		= dtv5100_probe,
222 	.disconnect	= dvb_usb_device_exit,
223 	.id_table	= dtv5100_table,
224 };
225 
226 module_usb_driver(dtv5100_driver);
227 
228 MODULE_AUTHOR(DRIVER_AUTHOR);
229 MODULE_DESCRIPTION(DRIVER_DESC);
230 MODULE_LICENSE("GPL");
231