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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@posteo.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         struct digitv_state *st = d->priv;
 32         int ret, wo;
 33 
 34         wo = (rbuf == NULL || rlen == 0); /* write-only */
 35 
 36         memset(st->sndbuf, 0, 7);
 37         memset(st->rcvbuf, 0, 7);
 38 
 39         st->sndbuf[0] = cmd;
 40         st->sndbuf[1] = vv;
 41         st->sndbuf[2] = wo ? wlen : rlen;
 42 
 43         if (wo) {
 44                 memcpy(&st->sndbuf[3], wbuf, wlen);
 45                 ret = dvb_usb_generic_write(d, st->sndbuf, 7);
 46         } else {
 47                 ret = dvb_usb_generic_rw(d, st->sndbuf, 7, st->rcvbuf, 7, 10);
 48                 memcpy(rbuf, &st->rcvbuf[3], rlen);
 49         }
 50         return ret;
 51 }
 52 
 53 /* I2C */
 54 static int digitv_i2c_xfer(struct i2c_adapter *adap,struct i2c_msg msg[],int num)
 55 {
 56         struct dvb_usb_device *d = i2c_get_adapdata(adap);
 57         int i;
 58 
 59         if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
 60                 return -EAGAIN;
 61 
 62         if (num > 2)
 63                 warn("more than 2 i2c messages at a time is not handled yet. TODO.");
 64 
 65         for (i = 0; i < num; i++) {
 66                 /* write/read request */
 67                 if (i+1 < num && (msg[i+1].flags & I2C_M_RD)) {
 68                         if (digitv_ctrl_msg(d, USB_READ_COFDM, msg[i].buf[0], NULL, 0,
 69                                                 msg[i+1].buf,msg[i+1].len) < 0)
 70                                 break;
 71                         i++;
 72                 } else
 73                         if (digitv_ctrl_msg(d,USB_WRITE_COFDM, msg[i].buf[0],
 74                                                 &msg[i].buf[1],msg[i].len-1,NULL,0) < 0)
 75                                 break;
 76         }
 77 
 78         mutex_unlock(&d->i2c_mutex);
 79         return i;
 80 }
 81 
 82 static u32 digitv_i2c_func(struct i2c_adapter *adapter)
 83 {
 84         return I2C_FUNC_I2C;
 85 }
 86 
 87 static struct i2c_algorithm digitv_i2c_algo = {
 88         .master_xfer   = digitv_i2c_xfer,
 89         .functionality = digitv_i2c_func,
 90 };
 91 
 92 /* Callbacks for DVB USB */
 93 static int digitv_identify_state (struct usb_device *udev, struct
 94                 dvb_usb_device_properties *props, struct dvb_usb_device_description **desc,
 95                 int *cold)
 96 {
 97         *cold = udev->descriptor.iManufacturer == 0 && udev->descriptor.iProduct == 0;
 98         return 0;
 99 }
100 
101 static int digitv_mt352_demod_init(struct dvb_frontend *fe)
102 {
103         static u8 reset_buf[] = { 0x89, 0x38,  0x8a, 0x2d, 0x50, 0x80 };
104         static u8 init_buf[] = { 0x68, 0xa0,  0x8e, 0x40,  0x53, 0x50,
105                         0x67, 0x20,  0x7d, 0x01,  0x7c, 0x00,  0x7a, 0x00,
106                         0x79, 0x20,  0x57, 0x05,  0x56, 0x31,  0x88, 0x0f,
107                         0x75, 0x32 };
108         int i;
109 
110         for (i = 0; i < ARRAY_SIZE(reset_buf); i += 2)
111                 mt352_write(fe, &reset_buf[i], 2);
112 
113         msleep(1);
114 
115         for (i = 0; i < ARRAY_SIZE(init_buf); i += 2)
116                 mt352_write(fe, &init_buf[i], 2);
117 
118         return 0;
119 }
120 
121 static struct mt352_config digitv_mt352_config = {
122         .demod_init = digitv_mt352_demod_init,
123 };
124 
125 static int digitv_nxt6000_tuner_set_params(struct dvb_frontend *fe)
126 {
127         struct dvb_usb_adapter *adap = fe->dvb->priv;
128         u8 b[5];
129 
130         fe->ops.tuner_ops.calc_regs(fe, b, sizeof(b));
131         if (fe->ops.i2c_gate_ctrl)
132                 fe->ops.i2c_gate_ctrl(fe, 1);
133         return digitv_ctrl_msg(adap->dev, USB_WRITE_TUNER, 0, &b[1], 4, NULL, 0);
134 }
135 
136 static struct nxt6000_config digitv_nxt6000_config = {
137         .clock_inversion = 1,
138 };
139 
140 static int digitv_frontend_attach(struct dvb_usb_adapter *adap)
141 {
142         struct digitv_state *st = adap->dev->priv;
143 
144         adap->fe_adap[0].fe = dvb_attach(mt352_attach, &digitv_mt352_config,
145                                          &adap->dev->i2c_adap);
146         if ((adap->fe_adap[0].fe) != NULL) {
147                 st->is_nxt6000 = 0;
148                 return 0;
149         }
150         adap->fe_adap[0].fe = dvb_attach(nxt6000_attach,
151                                          &digitv_nxt6000_config,
152                                          &adap->dev->i2c_adap);
153         if ((adap->fe_adap[0].fe) != NULL) {
154                 st->is_nxt6000 = 1;
155                 return 0;
156         }
157         return -EIO;
158 }
159 
160 static int digitv_tuner_attach(struct dvb_usb_adapter *adap)
161 {
162         struct digitv_state *st = adap->dev->priv;
163 
164         if (!dvb_attach(dvb_pll_attach, adap->fe_adap[0].fe, 0x60, NULL, DVB_PLL_TDED4))
165                 return -ENODEV;
166 
167         if (st->is_nxt6000)
168                 adap->fe_adap[0].fe->ops.tuner_ops.set_params = digitv_nxt6000_tuner_set_params;
169 
170         return 0;
171 }
172 
173 static struct rc_map_table rc_map_digitv_table[] = {
174         { 0x5f55, KEY_0 },
175         { 0x6f55, KEY_1 },
176         { 0x9f55, KEY_2 },
177         { 0xaf55, KEY_3 },
178         { 0x5f56, KEY_4 },
179         { 0x6f56, KEY_5 },
180         { 0x9f56, KEY_6 },
181         { 0xaf56, KEY_7 },
182         { 0x5f59, KEY_8 },
183         { 0x6f59, KEY_9 },
184         { 0x9f59, KEY_TV },
185         { 0xaf59, KEY_AUX },
186         { 0x5f5a, KEY_DVD },
187         { 0x6f5a, KEY_POWER },
188         { 0x9f5a, KEY_CAMERA },     /* labelled 'Picture' */
189         { 0xaf5a, KEY_AUDIO },
190         { 0x5f65, KEY_INFO },
191         { 0x6f65, KEY_F13 },     /* 16:9 */
192         { 0x9f65, KEY_F14 },     /* 14:9 */
193         { 0xaf65, KEY_EPG },
194         { 0x5f66, KEY_EXIT },
195         { 0x6f66, KEY_MENU },
196         { 0x9f66, KEY_UP },
197         { 0xaf66, KEY_DOWN },
198         { 0x5f69, KEY_LEFT },
199         { 0x6f69, KEY_RIGHT },
200         { 0x9f69, KEY_ENTER },
201         { 0xaf69, KEY_CHANNELUP },
202         { 0x5f6a, KEY_CHANNELDOWN },
203         { 0x6f6a, KEY_VOLUMEUP },
204         { 0x9f6a, KEY_VOLUMEDOWN },
205         { 0xaf6a, KEY_RED },
206         { 0x5f95, KEY_GREEN },
207         { 0x6f95, KEY_YELLOW },
208         { 0x9f95, KEY_BLUE },
209         { 0xaf95, KEY_SUBTITLE },
210         { 0x5f96, KEY_F15 },     /* AD */
211         { 0x6f96, KEY_TEXT },
212         { 0x9f96, KEY_MUTE },
213         { 0xaf96, KEY_REWIND },
214         { 0x5f99, KEY_STOP },
215         { 0x6f99, KEY_PLAY },
216         { 0x9f99, KEY_FASTFORWARD },
217         { 0xaf99, KEY_F16 },     /* chapter */
218         { 0x5f9a, KEY_PAUSE },
219         { 0x6f9a, KEY_PLAY },
220         { 0x9f9a, KEY_RECORD },
221         { 0xaf9a, KEY_F17 },     /* picture in picture */
222         { 0x5fa5, KEY_KPPLUS },  /* zoom in */
223         { 0x6fa5, KEY_KPMINUS }, /* zoom out */
224         { 0x9fa5, KEY_F18 },     /* capture */
225         { 0xafa5, KEY_F19 },     /* web */
226         { 0x5fa6, KEY_EMAIL },
227         { 0x6fa6, KEY_PHONE },
228         { 0x9fa6, KEY_PC },
229 };
230 
231 static int digitv_rc_query(struct dvb_usb_device *d, u32 *event, int *state)
232 {
233         int i;
234         u8 key[5];
235         u8 b[4] = { 0 };
236 
237         *event = 0;
238         *state = REMOTE_NO_KEY_PRESSED;
239 
240         digitv_ctrl_msg(d,USB_READ_REMOTE,0,NULL,0,&key[1],4);
241 
242         /* Tell the device we've read the remote. Not sure how necessary
243            this is, but the Nebula SDK does it. */
244         digitv_ctrl_msg(d,USB_WRITE_REMOTE,0,b,4,NULL,0);
245 
246         /* if something is inside the buffer, simulate key press */
247         if (key[1] != 0)
248         {
249                   for (i = 0; i < d->props.rc.legacy.rc_map_size; i++) {
250                         if (rc5_custom(&d->props.rc.legacy.rc_map_table[i]) == key[1] &&
251                             rc5_data(&d->props.rc.legacy.rc_map_table[i]) == key[2]) {
252                                 *event = d->props.rc.legacy.rc_map_table[i].keycode;
253                                 *state = REMOTE_KEY_PRESSED;
254                                 return 0;
255                         }
256                 }
257         }
258 
259         if (key[0] != 0)
260                 deb_rc("key: %*ph\n", 5, key);
261         return 0;
262 }
263 
264 /* DVB USB Driver stuff */
265 static struct dvb_usb_device_properties digitv_properties;
266 
267 static int digitv_probe(struct usb_interface *intf,
268                 const struct usb_device_id *id)
269 {
270         struct dvb_usb_device *d;
271         int ret = dvb_usb_device_init(intf, &digitv_properties, THIS_MODULE, &d,
272                                       adapter_nr);
273         if (ret == 0) {
274                 u8 b[4] = { 0 };
275 
276                 if (d != NULL) { /* do that only when the firmware is loaded */
277                         b[0] = 1;
278                         digitv_ctrl_msg(d,USB_WRITE_REMOTE_TYPE,0,b,4,NULL,0);
279 
280                         b[0] = 0;
281                         digitv_ctrl_msg(d,USB_WRITE_REMOTE,0,b,4,NULL,0);
282                 }
283         }
284         return ret;
285 }
286 
287 static struct usb_device_id digitv_table [] = {
288                 { USB_DEVICE(USB_VID_ANCHOR, USB_PID_NEBULA_DIGITV) },
289                 { }             /* Terminating entry */
290 };
291 MODULE_DEVICE_TABLE (usb, digitv_table);
292 
293 static struct dvb_usb_device_properties digitv_properties = {
294         .caps = DVB_USB_IS_AN_I2C_ADAPTER,
295 
296         .usb_ctrl = CYPRESS_FX2,
297         .firmware = "dvb-usb-digitv-02.fw",
298 
299         .size_of_priv = sizeof(struct digitv_state),
300 
301         .num_adapters = 1,
302         .adapter = {
303                 {
304                 .num_frontends = 1,
305                 .fe = {{
306                         .frontend_attach  = digitv_frontend_attach,
307                         .tuner_attach     = digitv_tuner_attach,
308 
309                         /* parameter for the MPEG2-data transfer */
310                         .stream = {
311                                 .type = USB_BULK,
312                                 .count = 7,
313                                 .endpoint = 0x02,
314                                 .u = {
315                                         .bulk = {
316                                                 .buffersize = 4096,
317                                         }
318                                 }
319                         },
320                 }},
321                 }
322         },
323         .identify_state   = digitv_identify_state,
324 
325         .rc.legacy = {
326                 .rc_interval      = 1000,
327                 .rc_map_table     = rc_map_digitv_table,
328                 .rc_map_size      = ARRAY_SIZE(rc_map_digitv_table),
329                 .rc_query         = digitv_rc_query,
330         },
331 
332         .i2c_algo         = &digitv_i2c_algo,
333 
334         .generic_bulk_ctrl_endpoint = 0x01,
335 
336         .num_device_descs = 1,
337         .devices = {
338                 {   "Nebula Electronics uDigiTV DVB-T USB2.0)",
339                         { &digitv_table[0], NULL },
340                         { NULL },
341                 },
342                 { NULL },
343         }
344 };
345 
346 static struct usb_driver digitv_driver = {
347         .name           = "dvb_usb_digitv",
348         .probe          = digitv_probe,
349         .disconnect = dvb_usb_device_exit,
350         .id_table       = digitv_table,
351 };
352 
353 module_usb_driver(digitv_driver);
354 
355 MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@posteo.de>");
356 MODULE_DESCRIPTION("Driver for Nebula Electronics uDigiTV DVB-T USB2.0");
357 MODULE_VERSION("1.0-alpha");
358 MODULE_LICENSE("GPL");
359 

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