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Linux/drivers/media/usb/dvb-usb/digitv.c

  1 /* DVB USB compliant linux driver for Nebula Electronics uDigiTV DVB-T USB2.0
  2  * receiver
  3  *
  4  * Copyright (C) 2005 Patrick Boettcher (patrick.boettcher@desy.de)
  5  *
  6  * partly based on the SDK published by Nebula Electronics
  7  *
  8  *      This program is free software; you can redistribute it and/or modify it
  9  *      under the terms of the GNU General Public License as published by the Free
 10  *      Software Foundation, version 2.
 11  *
 12  * see Documentation/dvb/README.dvb-usb for more information
 13  */
 14 #include "digitv.h"
 15 
 16 #include "mt352.h"
 17 #include "nxt6000.h"
 18 
 19 /* debug */
 20 static int dvb_usb_digitv_debug;
 21 module_param_named(debug,dvb_usb_digitv_debug, int, 0644);
 22 MODULE_PARM_DESC(debug, "set debugging level (1=rc (or-able))." DVB_USB_DEBUG_STATUS);
 23 
 24 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
 25 
 26 #define deb_rc(args...)   dprintk(dvb_usb_digitv_debug,0x01,args)
 27 
 28 static int digitv_ctrl_msg(struct dvb_usb_device *d,
 29                 u8 cmd, u8 vv, u8 *wbuf, int wlen, u8 *rbuf, int rlen)
 30 {
 31         int wo = (rbuf == NULL || rlen == 0); /* write-only */
 32         u8 sndbuf[7],rcvbuf[7];
 33         memset(sndbuf,0,7); memset(rcvbuf,0,7);
 34 
 35         sndbuf[0] = cmd;
 36         sndbuf[1] = vv;
 37         sndbuf[2] = wo ? wlen : rlen;
 38 
 39         if (wo) {
 40                 memcpy(&sndbuf[3],wbuf,wlen);
 41                 dvb_usb_generic_write(d,sndbuf,7);
 42         } else {
 43                 dvb_usb_generic_rw(d,sndbuf,7,rcvbuf,7,10);
 44                 memcpy(rbuf,&rcvbuf[3],rlen);
 45         }
 46         return 0;
 47 }
 48 
 49 /* I2C */
 50 static int digitv_i2c_xfer(struct i2c_adapter *adap,struct i2c_msg msg[],int num)
 51 {
 52         struct dvb_usb_device *d = i2c_get_adapdata(adap);
 53         int i;
 54 
 55         if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
 56                 return -EAGAIN;
 57 
 58         if (num > 2)
 59                 warn("more than 2 i2c messages at a time is not handled yet. TODO.");
 60 
 61         for (i = 0; i < num; i++) {
 62                 /* write/read request */
 63                 if (i+1 < num && (msg[i+1].flags & I2C_M_RD)) {
 64                         if (digitv_ctrl_msg(d, USB_READ_COFDM, msg[i].buf[0], NULL, 0,
 65                                                 msg[i+1].buf,msg[i+1].len) < 0)
 66                                 break;
 67                         i++;
 68                 } else
 69                         if (digitv_ctrl_msg(d,USB_WRITE_COFDM, msg[i].buf[0],
 70                                                 &msg[i].buf[1],msg[i].len-1,NULL,0) < 0)
 71                                 break;
 72         }
 73 
 74         mutex_unlock(&d->i2c_mutex);
 75         return i;
 76 }
 77 
 78 static u32 digitv_i2c_func(struct i2c_adapter *adapter)
 79 {
 80         return I2C_FUNC_I2C;
 81 }
 82 
 83 static struct i2c_algorithm digitv_i2c_algo = {
 84         .master_xfer   = digitv_i2c_xfer,
 85         .functionality = digitv_i2c_func,
 86 };
 87 
 88 /* Callbacks for DVB USB */
 89 static int digitv_identify_state (struct usb_device *udev, struct
 90                 dvb_usb_device_properties *props, struct dvb_usb_device_description **desc,
 91                 int *cold)
 92 {
 93         *cold = udev->descriptor.iManufacturer == 0 && udev->descriptor.iProduct == 0;
 94         return 0;
 95 }
 96 
 97 static int digitv_mt352_demod_init(struct dvb_frontend *fe)
 98 {
 99         static u8 reset_buf[] = { 0x89, 0x38,  0x8a, 0x2d, 0x50, 0x80 };
100         static u8 init_buf[] = { 0x68, 0xa0,  0x8e, 0x40,  0x53, 0x50,
101                         0x67, 0x20,  0x7d, 0x01,  0x7c, 0x00,  0x7a, 0x00,
102                         0x79, 0x20,  0x57, 0x05,  0x56, 0x31,  0x88, 0x0f,
103                         0x75, 0x32 };
104         int i;
105 
106         for (i = 0; i < ARRAY_SIZE(reset_buf); i += 2)
107                 mt352_write(fe, &reset_buf[i], 2);
108 
109         msleep(1);
110 
111         for (i = 0; i < ARRAY_SIZE(init_buf); i += 2)
112                 mt352_write(fe, &init_buf[i], 2);
113 
114         return 0;
115 }
116 
117 static struct mt352_config digitv_mt352_config = {
118         .demod_init = digitv_mt352_demod_init,
119 };
120 
121 static int digitv_nxt6000_tuner_set_params(struct dvb_frontend *fe)
122 {
123         struct dvb_usb_adapter *adap = fe->dvb->priv;
124         u8 b[5];
125 
126         fe->ops.tuner_ops.calc_regs(fe, b, sizeof(b));
127         if (fe->ops.i2c_gate_ctrl)
128                 fe->ops.i2c_gate_ctrl(fe, 1);
129         return digitv_ctrl_msg(adap->dev, USB_WRITE_TUNER, 0, &b[1], 4, NULL, 0);
130 }
131 
132 static struct nxt6000_config digitv_nxt6000_config = {
133         .clock_inversion = 1,
134 };
135 
136 static int digitv_frontend_attach(struct dvb_usb_adapter *adap)
137 {
138         struct digitv_state *st = adap->dev->priv;
139 
140         adap->fe_adap[0].fe = dvb_attach(mt352_attach, &digitv_mt352_config,
141                                          &adap->dev->i2c_adap);
142         if ((adap->fe_adap[0].fe) != NULL) {
143                 st->is_nxt6000 = 0;
144                 return 0;
145         }
146         adap->fe_adap[0].fe = dvb_attach(nxt6000_attach,
147                                          &digitv_nxt6000_config,
148                                          &adap->dev->i2c_adap);
149         if ((adap->fe_adap[0].fe) != NULL) {
150                 st->is_nxt6000 = 1;
151                 return 0;
152         }
153         return -EIO;
154 }
155 
156 static int digitv_tuner_attach(struct dvb_usb_adapter *adap)
157 {
158         struct digitv_state *st = adap->dev->priv;
159 
160         if (!dvb_attach(dvb_pll_attach, adap->fe_adap[0].fe, 0x60, NULL, DVB_PLL_TDED4))
161                 return -ENODEV;
162 
163         if (st->is_nxt6000)
164                 adap->fe_adap[0].fe->ops.tuner_ops.set_params = digitv_nxt6000_tuner_set_params;
165 
166         return 0;
167 }
168 
169 static struct rc_map_table rc_map_digitv_table[] = {
170         { 0x5f55, KEY_0 },
171         { 0x6f55, KEY_1 },
172         { 0x9f55, KEY_2 },
173         { 0xaf55, KEY_3 },
174         { 0x5f56, KEY_4 },
175         { 0x6f56, KEY_5 },
176         { 0x9f56, KEY_6 },
177         { 0xaf56, KEY_7 },
178         { 0x5f59, KEY_8 },
179         { 0x6f59, KEY_9 },
180         { 0x9f59, KEY_TV },
181         { 0xaf59, KEY_AUX },
182         { 0x5f5a, KEY_DVD },
183         { 0x6f5a, KEY_POWER },
184         { 0x9f5a, KEY_CAMERA },     /* labelled 'Picture' */
185         { 0xaf5a, KEY_AUDIO },
186         { 0x5f65, KEY_INFO },
187         { 0x6f65, KEY_F13 },     /* 16:9 */
188         { 0x9f65, KEY_F14 },     /* 14:9 */
189         { 0xaf65, KEY_EPG },
190         { 0x5f66, KEY_EXIT },
191         { 0x6f66, KEY_MENU },
192         { 0x9f66, KEY_UP },
193         { 0xaf66, KEY_DOWN },
194         { 0x5f69, KEY_LEFT },
195         { 0x6f69, KEY_RIGHT },
196         { 0x9f69, KEY_ENTER },
197         { 0xaf69, KEY_CHANNELUP },
198         { 0x5f6a, KEY_CHANNELDOWN },
199         { 0x6f6a, KEY_VOLUMEUP },
200         { 0x9f6a, KEY_VOLUMEDOWN },
201         { 0xaf6a, KEY_RED },
202         { 0x5f95, KEY_GREEN },
203         { 0x6f95, KEY_YELLOW },
204         { 0x9f95, KEY_BLUE },
205         { 0xaf95, KEY_SUBTITLE },
206         { 0x5f96, KEY_F15 },     /* AD */
207         { 0x6f96, KEY_TEXT },
208         { 0x9f96, KEY_MUTE },
209         { 0xaf96, KEY_REWIND },
210         { 0x5f99, KEY_STOP },
211         { 0x6f99, KEY_PLAY },
212         { 0x9f99, KEY_FASTFORWARD },
213         { 0xaf99, KEY_F16 },     /* chapter */
214         { 0x5f9a, KEY_PAUSE },
215         { 0x6f9a, KEY_PLAY },
216         { 0x9f9a, KEY_RECORD },
217         { 0xaf9a, KEY_F17 },     /* picture in picture */
218         { 0x5fa5, KEY_KPPLUS },  /* zoom in */
219         { 0x6fa5, KEY_KPMINUS }, /* zoom out */
220         { 0x9fa5, KEY_F18 },     /* capture */
221         { 0xafa5, KEY_F19 },     /* web */
222         { 0x5fa6, KEY_EMAIL },
223         { 0x6fa6, KEY_PHONE },
224         { 0x9fa6, KEY_PC },
225 };
226 
227 static int digitv_rc_query(struct dvb_usb_device *d, u32 *event, int *state)
228 {
229         int i;
230         u8 key[5];
231         u8 b[4] = { 0 };
232 
233         *event = 0;
234         *state = REMOTE_NO_KEY_PRESSED;
235 
236         digitv_ctrl_msg(d,USB_READ_REMOTE,0,NULL,0,&key[1],4);
237 
238         /* Tell the device we've read the remote. Not sure how necessary
239            this is, but the Nebula SDK does it. */
240         digitv_ctrl_msg(d,USB_WRITE_REMOTE,0,b,4,NULL,0);
241 
242         /* if something is inside the buffer, simulate key press */
243         if (key[1] != 0)
244         {
245                   for (i = 0; i < d->props.rc.legacy.rc_map_size; i++) {
246                         if (rc5_custom(&d->props.rc.legacy.rc_map_table[i]) == key[1] &&
247                             rc5_data(&d->props.rc.legacy.rc_map_table[i]) == key[2]) {
248                                 *event = d->props.rc.legacy.rc_map_table[i].keycode;
249                                 *state = REMOTE_KEY_PRESSED;
250                                 return 0;
251                         }
252                 }
253         }
254 
255         if (key[0] != 0)
256                 deb_rc("key: %*ph\n", 5, key);
257         return 0;
258 }
259 
260 /* DVB USB Driver stuff */
261 static struct dvb_usb_device_properties digitv_properties;
262 
263 static int digitv_probe(struct usb_interface *intf,
264                 const struct usb_device_id *id)
265 {
266         struct dvb_usb_device *d;
267         int ret = dvb_usb_device_init(intf, &digitv_properties, THIS_MODULE, &d,
268                                       adapter_nr);
269         if (ret == 0) {
270                 u8 b[4] = { 0 };
271 
272                 if (d != NULL) { /* do that only when the firmware is loaded */
273                         b[0] = 1;
274                         digitv_ctrl_msg(d,USB_WRITE_REMOTE_TYPE,0,b,4,NULL,0);
275 
276                         b[0] = 0;
277                         digitv_ctrl_msg(d,USB_WRITE_REMOTE,0,b,4,NULL,0);
278                 }
279         }
280         return ret;
281 }
282 
283 static struct usb_device_id digitv_table [] = {
284                 { USB_DEVICE(USB_VID_ANCHOR, USB_PID_NEBULA_DIGITV) },
285                 { }             /* Terminating entry */
286 };
287 MODULE_DEVICE_TABLE (usb, digitv_table);
288 
289 static struct dvb_usb_device_properties digitv_properties = {
290         .caps = DVB_USB_IS_AN_I2C_ADAPTER,
291 
292         .usb_ctrl = CYPRESS_FX2,
293         .firmware = "dvb-usb-digitv-02.fw",
294 
295         .size_of_priv = sizeof(struct digitv_state),
296 
297         .num_adapters = 1,
298         .adapter = {
299                 {
300                 .num_frontends = 1,
301                 .fe = {{
302                         .frontend_attach  = digitv_frontend_attach,
303                         .tuner_attach     = digitv_tuner_attach,
304 
305                         /* parameter for the MPEG2-data transfer */
306                         .stream = {
307                                 .type = USB_BULK,
308                                 .count = 7,
309                                 .endpoint = 0x02,
310                                 .u = {
311                                         .bulk = {
312                                                 .buffersize = 4096,
313                                         }
314                                 }
315                         },
316                 }},
317                 }
318         },
319         .identify_state   = digitv_identify_state,
320 
321         .rc.legacy = {
322                 .rc_interval      = 1000,
323                 .rc_map_table     = rc_map_digitv_table,
324                 .rc_map_size      = ARRAY_SIZE(rc_map_digitv_table),
325                 .rc_query         = digitv_rc_query,
326         },
327 
328         .i2c_algo         = &digitv_i2c_algo,
329 
330         .generic_bulk_ctrl_endpoint = 0x01,
331 
332         .num_device_descs = 1,
333         .devices = {
334                 {   "Nebula Electronics uDigiTV DVB-T USB2.0)",
335                         { &digitv_table[0], NULL },
336                         { NULL },
337                 },
338                 { NULL },
339         }
340 };
341 
342 static struct usb_driver digitv_driver = {
343         .name           = "dvb_usb_digitv",
344         .probe          = digitv_probe,
345         .disconnect = dvb_usb_device_exit,
346         .id_table       = digitv_table,
347 };
348 
349 module_usb_driver(digitv_driver);
350 
351 MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@desy.de>");
352 MODULE_DESCRIPTION("Driver for Nebula Electronics uDigiTV DVB-T USB2.0");
353 MODULE_VERSION("1.0-alpha");
354 MODULE_LICENSE("GPL");
355 

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