]> Pileus Git - ~andy/linux/blob - drivers/media/dvb/dvb-usb/m920x.c
V4L/DVB (5423): M920x: i2c cleanups
[~andy/linux] / drivers / media / dvb / dvb-usb / m920x.c
1 /* DVB USB compliant linux driver for MSI Mega Sky 580 DVB-T USB2.0 receiver
2  *
3  * Copyright (C) 2006 Aapo Tahkola (aet@rasterburn.org)
4  *
5  *      This program is free software; you can redistribute it and/or modify it
6  *      under the terms of the GNU General Public License as published by the Free
7  *      Software Foundation, version 2.
8  *
9  * see Documentation/dvb/README.dvb-usb for more information
10  */
11
12 #include "m920x.h"
13
14 #include "mt352.h"
15 #include "mt352_priv.h"
16 #include "qt1010.h"
17
18 /* debug */
19 static int dvb_usb_m920x_debug;
20 module_param_named(debug,dvb_usb_m920x_debug, int, 0644);
21 MODULE_PARM_DESC(debug, "set debugging level (1=rc (or-able))." DVB_USB_DEBUG_STATUS);
22
23 static struct dvb_usb_rc_key megasky_rc_keys [] = {
24         { 0x0, 0x12, KEY_POWER },
25         { 0x0, 0x1e, KEY_CYCLEWINDOWS }, /* min/max */
26         { 0x0, 0x02, KEY_CHANNELUP },
27         { 0x0, 0x05, KEY_CHANNELDOWN },
28         { 0x0, 0x03, KEY_VOLUMEUP },
29         { 0x0, 0x06, KEY_VOLUMEDOWN },
30         { 0x0, 0x04, KEY_MUTE },
31         { 0x0, 0x07, KEY_OK }, /* TS */
32         { 0x0, 0x08, KEY_STOP },
33         { 0x0, 0x09, KEY_MENU }, /* swap */
34         { 0x0, 0x0a, KEY_REWIND },
35         { 0x0, 0x1b, KEY_PAUSE },
36         { 0x0, 0x1f, KEY_FASTFORWARD },
37         { 0x0, 0x0c, KEY_RECORD },
38         { 0x0, 0x0d, KEY_CAMERA }, /* screenshot */
39         { 0x0, 0x0e, KEY_COFFEE }, /* "MTS" */
40 };
41
42 static inline int m9206_read(struct usb_device *udev, u8 request, u16 value,\
43                              u16 index, void *data, int size)
44 {
45         int ret;
46
47         ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
48                               request, USB_TYPE_VENDOR | USB_DIR_IN,
49                               value, index, data, size, 2000);
50         if (ret < 0)
51                 return ret;
52
53         if (ret != size)
54                 return -EIO;
55
56         return 0;
57 }
58
59 static inline int m9206_write(struct usb_device *udev, u8 request,
60                               u16 value, u16 index)
61 {
62         int ret;
63
64         ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
65                               request, USB_TYPE_VENDOR | USB_DIR_OUT,
66                               value, index, NULL, 0, 2000);
67         return ret;
68 }
69
70 static int m9206_rc_init(struct usb_device *udev)
71 {
72         int ret = 0;
73
74         /* Remote controller init. */
75         if ((ret = m9206_write(udev, M9206_CORE, 0xa8, M9206_RC_INIT2)) != 0)
76                 return ret;
77
78         if ((ret = m9206_write(udev, M9206_CORE, 0x51, M9206_RC_INIT1)) != 0)
79                 return ret;
80
81         return ret;
82 }
83
84 static int m9206_rc_query(struct dvb_usb_device *d, u32 *event, int *state)
85 {
86         struct m9206_state *m = d->priv;
87         int i, ret = 0;
88         u8 rc_state[2];
89
90
91         if ((ret = m9206_read(d->udev, M9206_CORE, 0x0, M9206_RC_STATE, rc_state, 1)) != 0)
92                 goto unlock;
93
94         if ((ret = m9206_read(d->udev, M9206_CORE, 0x0, M9206_RC_KEY, rc_state + 1, 1)) != 0)
95                 goto unlock;
96
97         for (i = 0; i < ARRAY_SIZE(megasky_rc_keys); i++)
98                 if (megasky_rc_keys[i].data == rc_state[1]) {
99                         *event = megasky_rc_keys[i].event;
100
101                         switch(rc_state[0]) {
102                         case 0x80:
103                                 *state = REMOTE_NO_KEY_PRESSED;
104                                 goto unlock;
105
106                         case 0x93:
107                         case 0x92:
108                                 m->rep_count = 0;
109                                 *state = REMOTE_KEY_PRESSED;
110                                 goto unlock;
111
112                         case 0x91:
113                                 /* For comfort. */
114                                 if (++m->rep_count > 2)
115                                         *state = REMOTE_KEY_REPEAT;
116                                 goto unlock;
117
118                         default:
119                                 deb_rc("Unexpected rc response %x\n", rc_state[0]);
120                                 *state = REMOTE_NO_KEY_PRESSED;
121                                 goto unlock;
122                         }
123                 }
124
125         if (rc_state[1] != 0)
126                 deb_rc("Unknown rc key %x\n", rc_state[1]);
127
128         *state = REMOTE_NO_KEY_PRESSED;
129
130         unlock:
131
132         return ret;
133 }
134
135 /* I2C */
136 static int m9206_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[],
137                           int num)
138 {
139         struct dvb_usb_device *d = i2c_get_adapdata(adap);
140         int i, j;
141         int ret = 0;
142
143         if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
144                 return -EAGAIN;
145
146         for (i = 0; i < num; i++) {
147                 if (msg[i].flags & I2C_M_RD) {
148
149                         if ((ret = m9206_write(d->udev, M9206_I2C, (msg[i].addr << 1) | 0x01, 0x80)) != 0)
150                                 goto unlock;
151
152                         for(j = 0; j < msg[i].len; j++) {
153                                 if (j + 1 == msg[i].len && i + 1== num) {
154                                         if ((ret = m9206_read(d->udev, M9206_I2C, 0x0, 0x60, &msg[i].buf[j], msg[i].len)) != 0)
155                                                 goto unlock;
156                                 } else {
157                                         if ((ret = m9206_read(d->udev, M9206_I2C, 0x0, 0x21, &msg[i].buf[j], msg[i].len)) != 0)
158                                                 goto unlock;
159                                 }
160                         }
161
162                 } else {
163                         if ((ret = m9206_write(d->udev, M9206_I2C, msg[i].addr << 1, 0x80)) != 0)
164                                 goto unlock;
165
166                         for(j = 0; j < msg[i].len; j++) {
167                                 if (j + 1 == msg[i].len && i + 1== num) {
168                                         if ((ret = m9206_write(d->udev, M9206_I2C, msg[i].buf[j], 0x40)) != 0)
169                                                 goto unlock;
170
171                                 } else {
172                                         if ((ret = m9206_write(d->udev, M9206_I2C, msg[i].buf[j], 0x0)) != 0)
173                                                 goto unlock;
174                                 }
175                         }
176                 }
177         }
178         ret = num;
179         unlock:
180         mutex_unlock(&d->i2c_mutex);
181
182         return ret;
183 }
184
185 static u32 m9206_i2c_func(struct i2c_adapter *adapter)
186 {
187         return I2C_FUNC_I2C;
188 }
189
190 static struct i2c_algorithm m9206_i2c_algo = {
191         .master_xfer   = m9206_i2c_xfer,
192         .functionality = m9206_i2c_func,
193 };
194
195
196 static int m9206_set_filter(struct dvb_usb_adapter *adap, int type, int idx,
197                             int pid)
198 {
199         int ret = 0;
200
201         if (pid >= 0x8000)
202                 return -EINVAL;
203
204         pid |= 0x8000;
205
206         if ((ret = m9206_write(adap->dev->udev, M9206_FILTER, pid, (type << 8) | (idx * 4) )) != 0)
207                 return ret;
208
209         if ((ret = m9206_write(adap->dev->udev, M9206_FILTER, 0, (type << 8) | (idx * 4) )) != 0)
210                 return ret;
211
212         return ret;
213 }
214
215 static int m9206_update_filters(struct dvb_usb_adapter *adap)
216 {
217         struct m9206_state *m = adap->dev->priv;
218         int enabled = m->filtering_enabled;
219         int i, ret = 0, filter = 0;
220
221         for (i = 0; i < M9206_MAX_FILTERS; i++)
222                 if (m->filters[i] == 8192)
223                         enabled = 0;
224
225         /* Disable all filters */
226         if ((ret = m9206_set_filter(adap, 0x81, 1, enabled)) != 0)
227                 return ret;
228
229         for (i = 0; i < M9206_MAX_FILTERS; i++)
230                 if ((ret = m9206_set_filter(adap, 0x81, i + 2, 0)) != 0)
231                         return ret;
232
233         if ((ret = m9206_set_filter(adap, 0x82, 0, 0x0)) != 0)
234                 return ret;
235
236         /* Set */
237         if (enabled) {
238                 for (i = 0; i < M9206_MAX_FILTERS; i++) {
239                         if (m->filters[i] == 0)
240                                 continue;
241
242                         if ((ret = m9206_set_filter(adap, 0x81, filter + 2, m->filters[i])) != 0)
243                                 return ret;
244
245                         filter++;
246                 }
247         }
248
249         if ((ret = m9206_set_filter(adap, 0x82, 0, 0x02f5)) != 0)
250                 return ret;
251
252         return ret;
253 }
254
255 static int m9206_pid_filter_ctrl(struct dvb_usb_adapter *adap, int onoff)
256 {
257         struct m9206_state *m = adap->dev->priv;
258
259         m->filtering_enabled = onoff ? 1 : 0;
260
261         return m9206_update_filters(adap);
262 }
263
264 static int m9206_pid_filter(struct dvb_usb_adapter *adap, int index, u16 pid,
265                             int onoff)
266 {
267         struct m9206_state *m = adap->dev->priv;
268
269         m->filters[index] = onoff ? pid : 0;
270
271         return m9206_update_filters(adap);
272 }
273
274 static int m9206_firmware_download(struct usb_device *udev,
275                                    const struct firmware *fw)
276 {
277         u16 value, index, size;
278         u8 read[4], *buff;
279         int i, pass, ret = 0;
280
281         buff = kmalloc(65536, GFP_KERNEL);
282
283         if ((ret = m9206_read(udev, M9206_FILTER, 0x0, 0x8000, read, 4)) != 0)
284                 goto done;
285         deb_rc("%x %x %x %x\n", read[0], read[1], read[2], read[3]);
286
287         if ((ret = m9206_read(udev, M9206_FW, 0x0, 0x0, read, 1)) != 0)
288                 goto done;
289         deb_rc("%x\n", read[0]);
290
291         for (pass = 0; pass < 2; pass++) {
292                 for (i = 0; i + (sizeof(u16) * 3) < fw->size;) {
293                         value = le16_to_cpu(*(u16 *)(fw->data + i));
294                         i += sizeof(u16);
295
296                         index = le16_to_cpu(*(u16 *)(fw->data + i));
297                         i += sizeof(u16);
298
299                         size = le16_to_cpu(*(u16 *)(fw->data + i));
300                         i += sizeof(u16);
301
302                         if (pass == 1) {
303                                 /* Will stall if using fw->data ... */
304                                 memcpy(buff, fw->data + i, size);
305
306                                 ret = usb_control_msg(udev, usb_sndctrlpipe(udev,0),
307                                             M9206_FW,
308                                             USB_TYPE_VENDOR | USB_DIR_OUT,
309                                             value, index, buff, size, 20);
310                                 if (ret != size) {
311                                         deb_rc("error while uploading fw!\n");
312                                         ret = -EIO;
313                                         goto done;
314                                 }
315                                 msleep(3);
316                         }
317                         i += size;
318                 }
319                 if (i != fw->size) {
320                         ret = -EINVAL;
321                         goto done;
322                 }
323         }
324
325         msleep(36);
326
327         /* m9206 will disconnect itself from the bus after this. */
328         (void) m9206_write(udev, M9206_CORE, 0x01, M9206_FW_GO);
329         deb_rc("firmware uploaded!\n");
330
331         done:
332         kfree(buff);
333
334         return ret;
335 }
336
337 /* Callbacks for DVB USB */
338 static int megasky_identify_state(struct usb_device *udev,
339                                   struct dvb_usb_device_properties *props,
340                                   struct dvb_usb_device_description **desc,
341                                   int *cold)
342 {
343         struct usb_host_interface *alt;
344
345         alt = usb_altnum_to_altsetting(usb_ifnum_to_if(udev, 0), 1);
346         *cold = (alt == NULL) ? 1 : 0;
347
348         return 0;
349 }
350
351 static int megasky_mt352_demod_init(struct dvb_frontend *fe)
352 {
353         u8 config[] = { CONFIG, 0x3d };
354         u8 clock[] = { CLOCK_CTL, 0x30 };
355         u8 reset[] = { RESET, 0x80 };
356         u8 adc_ctl[] = { ADC_CTL_1, 0x40 };
357         u8 agc[] = { AGC_TARGET, 0x1c, 0x20 };
358         u8 sec_agc[] = { 0x69, 0x00, 0xff, 0xff, 0x40, 0xff, 0x00, 0x40, 0x40 };
359         u8 unk1[] = { 0x93, 0x1a };
360         u8 unk2[] = { 0xb5, 0x7a };
361
362         mt352_write(fe, config, ARRAY_SIZE(config));
363         mt352_write(fe, clock, ARRAY_SIZE(clock));
364         mt352_write(fe, reset, ARRAY_SIZE(reset));
365         mt352_write(fe, adc_ctl, ARRAY_SIZE(adc_ctl));
366         mt352_write(fe, agc, ARRAY_SIZE(agc));
367         mt352_write(fe, sec_agc, ARRAY_SIZE(sec_agc));
368         mt352_write(fe, unk1, ARRAY_SIZE(unk1));
369         mt352_write(fe, unk2, ARRAY_SIZE(unk2));
370
371         deb_rc("Demod init!\n");
372
373         return 0;
374 }
375
376 static struct mt352_config megasky_mt352_config = {
377         .demod_address = 0x0f,
378         .no_tuner = 1,
379         .demod_init = megasky_mt352_demod_init,
380 };
381
382 static int megasky_mt352_frontend_attach(struct dvb_usb_adapter *adap)
383 {
384         deb_rc("megasky_frontend_attach!\n");
385
386         if ((adap->fe = dvb_attach(mt352_attach, &megasky_mt352_config, &adap->dev->i2c_adap)) == NULL)
387                 return -EIO;
388
389         return 0;
390 }
391
392 static struct qt1010_config megasky_qt1010_config = {
393         .i2c_address = 0x62
394 };
395
396 static int megasky_qt1010_tuner_attach(struct dvb_usb_adapter *adap)
397 {
398         if (dvb_attach(qt1010_attach, adap->fe, &adap->dev->i2c_adap,
399                        &megasky_qt1010_config) == NULL)
400                 return -ENODEV;
401
402         return 0;
403 }
404
405 /* DVB USB Driver stuff */
406 static struct dvb_usb_device_properties megasky_properties;
407
408 static int m920x_probe(struct usb_interface *intf,
409                        const struct usb_device_id *id)
410 {
411         struct dvb_usb_device *d;
412         struct usb_host_interface *alt;
413         int ret;
414
415         if ((ret = dvb_usb_device_init(intf, &megasky_properties, THIS_MODULE, &d)) == 0) {
416                 deb_rc("probed!\n");
417
418                 alt = usb_altnum_to_altsetting(intf, 1);
419                 if (alt == NULL) {
420                         deb_rc("not alt found!\n");
421                         return -ENODEV;
422                 }
423
424                 ret = usb_set_interface(d->udev, alt->desc.bInterfaceNumber,
425                                         alt->desc.bAlternateSetting);
426                 if (ret < 0)
427                         return ret;
428
429                 deb_rc("Changed to alternate setting!\n");
430
431                 if ((ret = m9206_rc_init(d->udev)) != 0)
432                         return ret;
433         }
434         return ret;
435 }
436
437 static struct usb_device_id m920x_table [] = {
438                 { USB_DEVICE(USB_VID_MSI, USB_PID_MSI_MEGASKY580) },
439                 { }             /* Terminating entry */
440 };
441 MODULE_DEVICE_TABLE (usb, m920x_table);
442
443 static struct dvb_usb_device_properties megasky_properties = {
444         .caps = DVB_USB_IS_AN_I2C_ADAPTER,
445
446         .usb_ctrl = DEVICE_SPECIFIC,
447         .firmware = "dvb-usb-megasky-02.fw",
448         .download_firmware = m9206_firmware_download,
449
450         .rc_interval      = 100,
451         .rc_key_map       = megasky_rc_keys,
452         .rc_key_map_size  = ARRAY_SIZE(megasky_rc_keys),
453         .rc_query         = m9206_rc_query,
454
455         .size_of_priv     = sizeof(struct m9206_state),
456
457         .identify_state   = megasky_identify_state,
458         .num_adapters = 1,
459         .adapter = {{
460                 .caps = DVB_USB_ADAP_HAS_PID_FILTER |
461                         DVB_USB_ADAP_PID_FILTER_CAN_BE_TURNED_OFF,
462
463                 .pid_filter_count = 8,
464                 .pid_filter       = m9206_pid_filter,
465                 .pid_filter_ctrl  = m9206_pid_filter_ctrl,
466
467                 .frontend_attach  = megasky_mt352_frontend_attach,
468                 .tuner_attach     = megasky_qt1010_tuner_attach,
469
470                 .stream = {
471                         .type = USB_BULK,
472                         .count = 8,
473                         .endpoint = 0x81,
474                         .u = {
475                                 .bulk = {
476                                         .buffersize = 512,
477                                 }
478                         }
479                 },
480         }},
481         .i2c_algo         = &m9206_i2c_algo,
482
483         .num_device_descs = 1,
484         .devices = {
485                 {   "MSI Mega Sky 580 DVB-T USB2.0",
486                         { &m920x_table[0], NULL },
487                         { NULL },
488                 },
489         }
490 };
491
492 static struct usb_driver m920x_driver = {
493         .name           = "dvb_usb_m920x",
494         .probe          = m920x_probe,
495         .disconnect     = dvb_usb_device_exit,
496         .id_table       = m920x_table,
497 };
498
499 /* module stuff */
500 static int __init m920x_module_init(void)
501 {
502         int ret;
503
504         if ((ret = usb_register(&m920x_driver))) {
505                 err("usb_register failed. Error number %d", ret);
506                 return ret;
507         }
508
509         return 0;
510 }
511
512 static void __exit m920x_module_exit(void)
513 {
514         /* deregister this driver from the USB subsystem */
515         usb_deregister(&m920x_driver);
516 }
517
518 module_init (m920x_module_init);
519 module_exit (m920x_module_exit);
520
521 MODULE_AUTHOR("Aapo Tahkola <aet@rasterburn.org>");
522 MODULE_DESCRIPTION("Driver MSI Mega Sky 580 DVB-T USB2.0 / Uli m920x");
523 MODULE_VERSION("0.1");
524 MODULE_LICENSE("GPL");