1 /*
2  * TerraTec Cinergy T2/qanu USB2 DVB-T adapter.
3  *
4  * Copyright (C) 2007 Tomi Orava (tomimo@ncircle.nullnet.fi)
5  *
6  * Based on the dvb-usb-framework code and the
7  * original Terratec Cinergy T2 driver by:
8  *
9  * Copyright (C) 2004 Daniel Mack <daniel@qanu.de> and
10  *		    Holger Waechtler <holger@qanu.de>
11  *
12  *  Protocol Spec published on http://qanu.de/specs/terratec_cinergyT2.pdf
13  *
14  * This program is free software; you can redistribute it and/or modify
15  * it under the terms of the GNU General Public License as published by
16  * the Free Software Foundation; either version 2 of the License, or
17  * (at your option) any later version.
18  *
19  * This program is distributed in the hope that it will be useful,
20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
22  * GNU General Public License for more details.
23  *
24  * You should have received a copy of the GNU General Public License
25  * along with this program; if not, write to the Free Software
26  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27  *
28  */
29 
30 #include "cinergyT2.h"
31 
32 
33 /* debug */
34 int dvb_usb_cinergyt2_debug;
35 
36 module_param_named(debug, dvb_usb_cinergyt2_debug, int, 0644);
37 MODULE_PARM_DESC(debug, "set debugging level (1=info, xfer=2, rc=4 "
38 		"(or-able)).");
39 
40 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
41 
42 struct cinergyt2_state {
43 	u8 rc_counter;
44 };
45 
46 /* We are missing a release hook with usb_device data */
47 static struct dvb_usb_device *cinergyt2_usb_device;
48 
49 static struct dvb_usb_device_properties cinergyt2_properties;
50 
51 static int cinergyt2_streaming_ctrl(struct dvb_usb_adapter *adap, int enable)
52 {
53 	char buf[] = { CINERGYT2_EP1_CONTROL_STREAM_TRANSFER, enable ? 1 : 0 };
54 	char result[64];
55 	return dvb_usb_generic_rw(adap->dev, buf, sizeof(buf), result,
56 				sizeof(result), 0);
57 }
58 
59 static int cinergyt2_power_ctrl(struct dvb_usb_device *d, int enable)
60 {
61 	char buf[] = { CINERGYT2_EP1_SLEEP_MODE, enable ? 0 : 1 };
62 	char state[3];
63 	return dvb_usb_generic_rw(d, buf, sizeof(buf), state, sizeof(state), 0);
64 }
65 
66 static int cinergyt2_frontend_attach(struct dvb_usb_adapter *adap)
67 {
68 	char query[] = { CINERGYT2_EP1_GET_FIRMWARE_VERSION };
69 	char state[3];
70 	int ret;
71 
72 	adap->fe_adap[0].fe = cinergyt2_fe_attach(adap->dev);
73 
74 	ret = dvb_usb_generic_rw(adap->dev, query, sizeof(query), state,
75 				sizeof(state), 0);
76 	if (ret < 0) {
77 		deb_rc("cinergyt2_power_ctrl() Failed to retrieve sleep "
78 			"state info\n");
79 	}
80 
81 	/* Copy this pointer as we are gonna need it in the release phase */
82 	cinergyt2_usb_device = adap->dev;
83 
84 	return 0;
85 }
86 
87 static struct rc_map_table rc_map_cinergyt2_table[] = {
88 	{ 0x0401, KEY_POWER },
89 	{ 0x0402, KEY_1 },
90 	{ 0x0403, KEY_2 },
91 	{ 0x0404, KEY_3 },
92 	{ 0x0405, KEY_4 },
93 	{ 0x0406, KEY_5 },
94 	{ 0x0407, KEY_6 },
95 	{ 0x0408, KEY_7 },
96 	{ 0x0409, KEY_8 },
97 	{ 0x040a, KEY_9 },
98 	{ 0x040c, KEY_0 },
99 	{ 0x040b, KEY_VIDEO },
100 	{ 0x040d, KEY_REFRESH },
101 	{ 0x040e, KEY_SELECT },
102 	{ 0x040f, KEY_EPG },
103 	{ 0x0410, KEY_UP },
104 	{ 0x0414, KEY_DOWN },
105 	{ 0x0411, KEY_LEFT },
106 	{ 0x0413, KEY_RIGHT },
107 	{ 0x0412, KEY_OK },
108 	{ 0x0415, KEY_TEXT },
109 	{ 0x0416, KEY_INFO },
110 	{ 0x0417, KEY_RED },
111 	{ 0x0418, KEY_GREEN },
112 	{ 0x0419, KEY_YELLOW },
113 	{ 0x041a, KEY_BLUE },
114 	{ 0x041c, KEY_VOLUMEUP },
115 	{ 0x041e, KEY_VOLUMEDOWN },
116 	{ 0x041d, KEY_MUTE },
117 	{ 0x041b, KEY_CHANNELUP },
118 	{ 0x041f, KEY_CHANNELDOWN },
119 	{ 0x0440, KEY_PAUSE },
120 	{ 0x044c, KEY_PLAY },
121 	{ 0x0458, KEY_RECORD },
122 	{ 0x0454, KEY_PREVIOUS },
123 	{ 0x0448, KEY_STOP },
124 	{ 0x045c, KEY_NEXT }
125 };
126 
127 /* Number of keypresses to ignore before detect repeating */
128 #define RC_REPEAT_DELAY 3
129 
130 static int repeatable_keys[] = {
131 	KEY_UP,
132 	KEY_DOWN,
133 	KEY_LEFT,
134 	KEY_RIGHT,
135 	KEY_VOLUMEUP,
136 	KEY_VOLUMEDOWN,
137 	KEY_CHANNELUP,
138 	KEY_CHANNELDOWN
139 };
140 
141 static int cinergyt2_rc_query(struct dvb_usb_device *d, u32 *event, int *state)
142 {
143 	struct cinergyt2_state *st = d->priv;
144 	u8 key[5] = {0, 0, 0, 0, 0}, cmd = CINERGYT2_EP1_GET_RC_EVENTS;
145 	int i;
146 
147 	*state = REMOTE_NO_KEY_PRESSED;
148 
149 	dvb_usb_generic_rw(d, &cmd, 1, key, sizeof(key), 0);
150 	if (key[4] == 0xff) {
151 		/* key repeat */
152 		st->rc_counter++;
153 		if (st->rc_counter > RC_REPEAT_DELAY) {
154 			for (i = 0; i < ARRAY_SIZE(repeatable_keys); i++) {
155 				if (d->last_event == repeatable_keys[i]) {
156 					*state = REMOTE_KEY_REPEAT;
157 					*event = d->last_event;
158 					deb_rc("repeat key, event %x\n",
159 						   *event);
160 					return 0;
161 				}
162 			}
163 			deb_rc("repeated key (non repeatable)\n");
164 		}
165 		return 0;
166 	}
167 
168 	/* hack to pass checksum on the custom field */
169 	key[2] = ~key[1];
170 	dvb_usb_nec_rc_key_to_event(d, key, event, state);
171 	if (key[0] != 0) {
172 		if (*event != d->last_event)
173 			st->rc_counter = 0;
174 
175 		deb_rc("key: %*ph\n", 5, key);
176 	}
177 	return 0;
178 }
179 
180 static int cinergyt2_usb_probe(struct usb_interface *intf,
181 				const struct usb_device_id *id)
182 {
183 	return dvb_usb_device_init(intf, &cinergyt2_properties,
184 					THIS_MODULE, NULL, adapter_nr);
185 }
186 
187 
188 static struct usb_device_id cinergyt2_usb_table[] = {
189 	{ USB_DEVICE(USB_VID_TERRATEC, 0x0038) },
190 	{ 0 }
191 };
192 
193 MODULE_DEVICE_TABLE(usb, cinergyt2_usb_table);
194 
195 static struct dvb_usb_device_properties cinergyt2_properties = {
196 	.size_of_priv = sizeof(struct cinergyt2_state),
197 	.num_adapters = 1,
198 	.adapter = {
199 		{
200 		.num_frontends = 1,
201 		.fe = {{
202 			.streaming_ctrl   = cinergyt2_streaming_ctrl,
203 			.frontend_attach  = cinergyt2_frontend_attach,
204 
205 			/* parameter for the MPEG2-data transfer */
206 			.stream = {
207 				.type = USB_BULK,
208 				.count = 5,
209 				.endpoint = 0x02,
210 				.u = {
211 					.bulk = {
212 						.buffersize = 512,
213 					}
214 				}
215 			},
216 		}},
217 		}
218 	},
219 
220 	.power_ctrl       = cinergyt2_power_ctrl,
221 
222 	.rc.legacy = {
223 		.rc_interval      = 50,
224 		.rc_map_table     = rc_map_cinergyt2_table,
225 		.rc_map_size      = ARRAY_SIZE(rc_map_cinergyt2_table),
226 		.rc_query         = cinergyt2_rc_query,
227 	},
228 
229 	.generic_bulk_ctrl_endpoint = 1,
230 
231 	.num_device_descs = 1,
232 	.devices = {
233 		{ .name = "TerraTec/qanu USB2.0 Highspeed DVB-T Receiver",
234 		  .cold_ids = {NULL},
235 		  .warm_ids = { &cinergyt2_usb_table[0], NULL },
236 		},
237 		{ NULL },
238 	}
239 };
240 
241 
242 static struct usb_driver cinergyt2_driver = {
243 	.name		= "cinergyT2",
244 	.probe		= cinergyt2_usb_probe,
245 	.disconnect	= dvb_usb_device_exit,
246 	.id_table	= cinergyt2_usb_table
247 };
248 
249 module_usb_driver(cinergyt2_driver);
250 
251 MODULE_DESCRIPTION("Terratec Cinergy T2 DVB-T driver");
252 MODULE_LICENSE("GPL");
253 MODULE_AUTHOR("Tomi Orava");
254