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making the kernel build with up to date compilers again, see https://bbs.archlinux...
[nao-ulib.git] / kernel / 2.6.29.6-aldebaran-rt / sound / pci / mixart / mixart_hwdep.c
blob3782b52bc0e8cb714466f0466991050e52c29b15
1 /*
2 * Driver for Digigram miXart soundcards
3 *
4 * DSP firmware management
5 *
6 * Copyright (c) 2003 by Digigram <alsa@digigram.com>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 */
22
23 #include <linux/interrupt.h>
24 #include <linux/pci.h>
25 #include <linux/firmware.h>
26 #include <linux/vmalloc.h>
27 #include <asm/io.h>
28 #include <sound/core.h>
29 #include "mixart.h"
30 #include "mixart_mixer.h"
31 #include "mixart_core.h"
32 #include "mixart_hwdep.h"
33
34
35 /**
36 * wait for a value on a peudo register, exit with a timeout
37 *
38 * @param mgr pointer to miXart manager structure
39 * @param offset unsigned pseudo_register base + offset of value
40 * @param value value
41 * @param timeout timeout in centisenconds
42 */
43 static int mixart_wait_nice_for_register_value(struct mixart_mgr *mgr,
44 u32 offset, int is_egal,
45 u32 value, unsigned long timeout)
46 {
47 unsigned long end_time = jiffies + (timeout * HZ / 100);
48 u32 read;
49
50 do { /* we may take too long time in this loop.
51 * so give controls back to kernel if needed.
52 */
53 cond_resched();
54
55 read = readl_be( MIXART_MEM( mgr, offset ));
56 if(is_egal) {
57 if(read == value) return 0;
58 }
59 else { /* wait for different value */
60 if(read != value) return 0;
61 }
62 } while ( time_after_eq(end_time, jiffies) );
63
64 return -EBUSY;
65 }
66
67
68 /*
69 structures needed to upload elf code packets
70 */
71 struct snd_mixart_elf32_ehdr {
72 u8 e_ident[16];
73 u16 e_type;
74 u16 e_machine;
75 u32 e_version;
76 u32 e_entry;
77 u32 e_phoff;
78 u32 e_shoff;
79 u32 e_flags;
80 u16 e_ehsize;
81 u16 e_phentsize;
82 u16 e_phnum;
83 u16 e_shentsize;
84 u16 e_shnum;
85 u16 e_shstrndx;
86 };
87
88 struct snd_mixart_elf32_phdr {
89 u32 p_type;
90 u32 p_offset;
91 u32 p_vaddr;
92 u32 p_paddr;
93 u32 p_filesz;
94 u32 p_memsz;
95 u32 p_flags;
96 u32 p_align;
97 };
98
99 static int mixart_load_elf(struct mixart_mgr *mgr, const struct firmware *dsp )
100 {
101 char elf32_magic_number[4] = {0x7f,'E','L','F'};
102 struct snd_mixart_elf32_ehdr *elf_header;
103 int i;
104
105 elf_header = (struct snd_mixart_elf32_ehdr *)dsp->data;
106 for( i=0; i<4; i++ )
107 if ( elf32_magic_number[i] != elf_header->e_ident[i] )
108 return -EINVAL;
109
110 if( elf_header->e_phoff != 0 ) {
111 struct snd_mixart_elf32_phdr elf_programheader;
112
113 for( i=0; i < be16_to_cpu(elf_header->e_phnum); i++ ) {
114 u32 pos = be32_to_cpu(elf_header->e_phoff) + (u32)(i * be16_to_cpu(elf_header->e_phentsize));
115
116 memcpy( &elf_programheader, dsp->data + pos, sizeof(elf_programheader) );
117
118 if(elf_programheader.p_type != 0) {
119 if( elf_programheader.p_filesz != 0 ) {
120 memcpy_toio( MIXART_MEM( mgr, be32_to_cpu(elf_programheader.p_vaddr)),
121 dsp->data + be32_to_cpu( elf_programheader.p_offset ),
122 be32_to_cpu( elf_programheader.p_filesz ));
123 }
124 }
125 }
126 }
127 return 0;
128 }
129
130 /*
131 * get basic information and init miXart
132 */
133
134 /* audio IDs for request to the board */
135 #define MIXART_FIRST_ANA_AUDIO_ID 0
136 #define MIXART_FIRST_DIG_AUDIO_ID 8
137
138 static int mixart_enum_connectors(struct mixart_mgr *mgr)
139 {
140 u32 k;
141 int err;
142 struct mixart_msg request;
143 struct mixart_enum_connector_resp *connector;
144 struct mixart_audio_info_req *audio_info_req;
145 struct mixart_audio_info_resp *audio_info;
146
147 connector = kmalloc(sizeof(*connector), GFP_KERNEL);
148 audio_info_req = kmalloc(sizeof(*audio_info_req), GFP_KERNEL);
149 audio_info = kmalloc(sizeof(*audio_info), GFP_KERNEL);
150 if (! connector || ! audio_info_req || ! audio_info) {
151 err = -ENOMEM;
152 goto __error;
153 }
154
155 audio_info_req->line_max_level = MIXART_FLOAT_P_22_0_TO_HEX;
156 audio_info_req->micro_max_level = MIXART_FLOAT_M_20_0_TO_HEX;
157 audio_info_req->cd_max_level = MIXART_FLOAT____0_0_TO_HEX;
158
159 request.message_id = MSG_SYSTEM_ENUM_PLAY_CONNECTOR;
160 request.uid = (struct mixart_uid){0,0}; /* board num = 0 */
161 request.data = NULL;
162 request.size = 0;
163
164 err = snd_mixart_send_msg(mgr, &request, sizeof(*connector), connector);
165 if((err < 0) || (connector->error_code) || (connector->uid_count > MIXART_MAX_PHYS_CONNECTORS)) {
166 snd_printk(KERN_ERR "error MSG_SYSTEM_ENUM_PLAY_CONNECTOR\n");
167 err = -EINVAL;
168 goto __error;
169 }
170
171 for(k=0; k < connector->uid_count; k++) {
172 struct mixart_pipe *pipe;
173
174 if(k < MIXART_FIRST_DIG_AUDIO_ID) {
175 pipe = &mgr->chip[k/2]->pipe_out_ana;
176 } else {
177 pipe = &mgr->chip[(k-MIXART_FIRST_DIG_AUDIO_ID)/2]->pipe_out_dig;
178 }
179 if(k & 1) {
180 pipe->uid_right_connector = connector->uid[k]; /* odd */
181 } else {
182 pipe->uid_left_connector = connector->uid[k]; /* even */
183 }
184
185 /* snd_printk(KERN_DEBUG "playback connector[%d].object_id = %x\n", k, connector->uid[k].object_id); */
186
187 /* TODO: really need send_msg MSG_CONNECTOR_GET_AUDIO_INFO for each connector ? perhaps for analog level caps ? */
188 request.message_id = MSG_CONNECTOR_GET_AUDIO_INFO;
189 request.uid = connector->uid[k];
190 request.data = audio_info_req;
191 request.size = sizeof(*audio_info_req);
192
193 err = snd_mixart_send_msg(mgr, &request, sizeof(*audio_info), audio_info);
194 if( err < 0 ) {
195 snd_printk(KERN_ERR "error MSG_CONNECTOR_GET_AUDIO_INFO\n");
196 goto __error;
197 }
198 /*snd_printk(KERN_DEBUG "play analog_info.analog_level_present = %x\n", audio_info->info.analog_info.analog_level_present);*/
199 }
200
201 request.message_id = MSG_SYSTEM_ENUM_RECORD_CONNECTOR;
202 request.uid = (struct mixart_uid){0,0}; /* board num = 0 */
203 request.data = NULL;
204 request.size = 0;
205
206 err = snd_mixart_send_msg(mgr, &request, sizeof(*connector), connector);
207 if((err < 0) || (connector->error_code) || (connector->uid_count > MIXART_MAX_PHYS_CONNECTORS)) {
208 snd_printk(KERN_ERR "error MSG_SYSTEM_ENUM_RECORD_CONNECTOR\n");
209 err = -EINVAL;
210 goto __error;
211 }
212
213 for(k=0; k < connector->uid_count; k++) {
214 struct mixart_pipe *pipe;
215
216 if(k < MIXART_FIRST_DIG_AUDIO_ID) {
217 pipe = &mgr->chip[k/2]->pipe_in_ana;
218 } else {
219 pipe = &mgr->chip[(k-MIXART_FIRST_DIG_AUDIO_ID)/2]->pipe_in_dig;
220 }
221 if(k & 1) {
222 pipe->uid_right_connector = connector->uid[k]; /* odd */
223 } else {
224 pipe->uid_left_connector = connector->uid[k]; /* even */
225 }
226
227 /* snd_printk(KERN_DEBUG "capture connector[%d].object_id = %x\n", k, connector->uid[k].object_id); */
228
229 /* TODO: really need send_msg MSG_CONNECTOR_GET_AUDIO_INFO for each connector ? perhaps for analog level caps ? */
230 request.message_id = MSG_CONNECTOR_GET_AUDIO_INFO;
231 request.uid = connector->uid[k];
232 request.data = audio_info_req;
233 request.size = sizeof(*audio_info_req);
234
235 err = snd_mixart_send_msg(mgr, &request, sizeof(*audio_info), audio_info);
236 if( err < 0 ) {
237 snd_printk(KERN_ERR "error MSG_CONNECTOR_GET_AUDIO_INFO\n");
238 goto __error;
239 }
240 /*snd_printk(KERN_DEBUG "rec analog_info.analog_level_present = %x\n", audio_info->info.analog_info.analog_level_present);*/
241 }
242 err = 0;
243
244 __error:
245 kfree(connector);
246 kfree(audio_info_req);
247 kfree(audio_info);
248
249 return err;
250 }
251
252 static int mixart_enum_physio(struct mixart_mgr *mgr)
253 {
254 u32 k;
255 int err;
256 struct mixart_msg request;
257 struct mixart_uid get_console_mgr;
258 struct mixart_return_uid console_mgr;
259 struct mixart_uid_enumeration phys_io;
260
261 /* get the uid for the console manager */
262 get_console_mgr.object_id = 0;
263 get_console_mgr.desc = MSG_CONSOLE_MANAGER | 0; /* cardindex = 0 */
264
265 request.message_id = MSG_CONSOLE_GET_CLOCK_UID;
266 request.uid = get_console_mgr;
267 request.data = &get_console_mgr;
268 request.size = sizeof(get_console_mgr);
269
270 err = snd_mixart_send_msg(mgr, &request, sizeof(console_mgr), &console_mgr);
271
272 if( (err < 0) || (console_mgr.error_code != 0) ) {
273 snd_printk(KERN_DEBUG "error MSG_CONSOLE_GET_CLOCK_UID : err=%x\n", console_mgr.error_code);
274 return -EINVAL;
275 }
276
277 /* used later for clock issues ! */
278 mgr->uid_console_manager = console_mgr.uid;
279
280 request.message_id = MSG_SYSTEM_ENUM_PHYSICAL_IO;
281 request.uid = (struct mixart_uid){0,0};
282 request.data = &console_mgr.uid;
283 request.size = sizeof(console_mgr.uid);
284
285 err = snd_mixart_send_msg(mgr, &request, sizeof(phys_io), &phys_io);
286 if( (err < 0) || ( phys_io.error_code != 0 ) ) {
287 snd_printk(KERN_ERR "error MSG_SYSTEM_ENUM_PHYSICAL_IO err(%x) error_code(%x)\n", err, phys_io.error_code );
288 return -EINVAL;
289 }
290
291 /* min 2 phys io per card (analog in + analog out) */
292 if (phys_io.nb_uid < MIXART_MAX_CARDS * 2)
293 return -EINVAL;
294
295 for(k=0; k<mgr->num_cards; k++) {
296 mgr->chip[k]->uid_in_analog_physio = phys_io.uid[k];
297 mgr->chip[k]->uid_out_analog_physio = phys_io.uid[phys_io.nb_uid/2 + k];
298 }
299
300 return 0;
301 }
302
303
304 static int mixart_first_init(struct mixart_mgr *mgr)
305 {
306 u32 k;
307 int err;
308 struct mixart_msg request;
309
310 if((err = mixart_enum_connectors(mgr)) < 0) return err;
311
312 if((err = mixart_enum_physio(mgr)) < 0) return err;
313
314 /* send a synchro command to card (necessary to do this before first MSG_STREAM_START_STREAM_GRP_PACKET) */
315 /* though why not here */
316 request.message_id = MSG_SYSTEM_SEND_SYNCHRO_CMD;
317 request.uid = (struct mixart_uid){0,0};
318 request.data = NULL;
319 request.size = 0;
320 /* this command has no data. response is a 32 bit status */
321 err = snd_mixart_send_msg(mgr, &request, sizeof(k), &k);
322 if( (err < 0) || (k != 0) ) {
323 snd_printk(KERN_ERR "error MSG_SYSTEM_SEND_SYNCHRO_CMD\n");
324 return err == 0 ? -EINVAL : err;
325 }
326
327 return 0;
328 }
329
330
331 /* firmware base addresses (when hard coded) */
332 #define MIXART_MOTHERBOARD_XLX_BASE_ADDRESS 0x00600000
333
334 static int mixart_dsp_load(struct mixart_mgr* mgr, int index, const struct firmware *dsp)
335 {
336 int err, card_index;
337 u32 status_xilinx, status_elf, status_daught;
338 u32 val;
339
340 /* read motherboard xilinx status */
341 status_xilinx = readl_be( MIXART_MEM( mgr,MIXART_PSEUDOREG_MXLX_STATUS_OFFSET ));
342 /* read elf status */
343 status_elf = readl_be( MIXART_MEM( mgr,MIXART_PSEUDOREG_ELF_STATUS_OFFSET ));
344 /* read daughterboard xilinx status */
345 status_daught = readl_be( MIXART_MEM( mgr,MIXART_PSEUDOREG_DXLX_STATUS_OFFSET ));
346
347 /* motherboard xilinx status 5 will say that the board is performing a reset */
348 if( status_xilinx == 5 ) {
349 snd_printk( KERN_ERR "miXart is resetting !\n");
350 return -EAGAIN; /* try again later */
351 }
352
353 switch (index) {
354 case MIXART_MOTHERBOARD_XLX_INDEX:
355
356 /* xilinx already loaded ? */
357 if( status_xilinx == 4 ) {
358 snd_printk( KERN_DEBUG "xilinx is already loaded !\n");
359 return 0;
360 }
361 /* the status should be 0 == "idle" */
362 if( status_xilinx != 0 ) {
363 snd_printk( KERN_ERR "xilinx load error ! status = %d\n", status_xilinx);
364 return -EIO; /* modprob -r may help ? */
365 }
366
367 /* check xilinx validity */
368 if (((u32*)(dsp->data))[0] == 0xffffffff)
369 return -EINVAL;
370 if (dsp->size % 4)
371 return -EINVAL;
372
373 /* set xilinx status to copying */
374 writel_be( 1, MIXART_MEM( mgr, MIXART_PSEUDOREG_MXLX_STATUS_OFFSET ));
375
376 /* setup xilinx base address */
377 writel_be( MIXART_MOTHERBOARD_XLX_BASE_ADDRESS, MIXART_MEM( mgr,MIXART_PSEUDOREG_MXLX_BASE_ADDR_OFFSET ));
378 /* setup code size for xilinx file */
379 writel_be( dsp->size, MIXART_MEM( mgr, MIXART_PSEUDOREG_MXLX_SIZE_OFFSET ));
380
381 /* copy xilinx code */
382 memcpy_toio( MIXART_MEM( mgr, MIXART_MOTHERBOARD_XLX_BASE_ADDRESS), dsp->data, dsp->size);
383
384 /* set xilinx status to copy finished */
385 writel_be( 2, MIXART_MEM( mgr, MIXART_PSEUDOREG_MXLX_STATUS_OFFSET ));
386
387 /* return, because no further processing needed */
388 return 0;
389
390 case MIXART_MOTHERBOARD_ELF_INDEX:
391
392 if( status_elf == 4 ) {
393 snd_printk( KERN_DEBUG "elf file already loaded !\n");
394 return 0;
395 }
396
397 /* the status should be 0 == "idle" */
398 if( status_elf != 0 ) {
399 snd_printk( KERN_ERR "elf load error ! status = %d\n", status_elf);
400 return -EIO; /* modprob -r may help ? */
401 }
402
403 /* wait for xilinx status == 4 */
404 err = mixart_wait_nice_for_register_value( mgr, MIXART_PSEUDOREG_MXLX_STATUS_OFFSET, 1, 4, 500); /* 5sec */
405 if (err < 0) {
406 snd_printk( KERN_ERR "xilinx was not loaded or could not be started\n");
407 return err;
408 }
409
410 /* init some data on the card */
411 writel_be( 0, MIXART_MEM( mgr, MIXART_PSEUDOREG_BOARDNUMBER ) ); /* set miXart boardnumber to 0 */
412 writel_be( 0, MIXART_MEM( mgr, MIXART_FLOWTABLE_PTR ) ); /* reset pointer to flow table on miXart */
413
414 /* set elf status to copying */
415 writel_be( 1, MIXART_MEM( mgr, MIXART_PSEUDOREG_ELF_STATUS_OFFSET ));
416
417 /* process the copying of the elf packets */
418 err = mixart_load_elf( mgr, dsp );
419 if (err < 0) return err;
420
421 /* set elf status to copy finished */
422 writel_be( 2, MIXART_MEM( mgr, MIXART_PSEUDOREG_ELF_STATUS_OFFSET ));
423
424 /* wait for elf status == 4 */
425 err = mixart_wait_nice_for_register_value( mgr, MIXART_PSEUDOREG_ELF_STATUS_OFFSET, 1, 4, 300); /* 3sec */
426 if (err < 0) {
427 snd_printk( KERN_ERR "elf could not be started\n");
428 return err;
429 }
430
431 /* miXart waits at this point on the pointer to the flow table */
432 writel_be( (u32)mgr->flowinfo.addr, MIXART_MEM( mgr, MIXART_FLOWTABLE_PTR ) ); /* give pointer of flow table to miXart */
433
434 return 0; /* return, another xilinx file has to be loaded before */
435
436 case MIXART_AESEBUBOARD_XLX_INDEX:
437 default:
438
439 /* elf and xilinx should be loaded */
440 if( (status_elf != 4) || (status_xilinx != 4) ) {
441 printk( KERN_ERR "xilinx or elf not successfully loaded\n");
442 return -EIO; /* modprob -r may help ? */
443 }
444
445 /* wait for daughter detection != 0 */
446 err = mixart_wait_nice_for_register_value( mgr, MIXART_PSEUDOREG_DBRD_PRESENCE_OFFSET, 0, 0, 30); /* 300msec */
447 if (err < 0) {
448 snd_printk( KERN_ERR "error starting elf file\n");
449 return err;
450 }
451
452 /* the board type can now be retrieved */
453 mgr->board_type = (DAUGHTER_TYPE_MASK & readl_be( MIXART_MEM( mgr, MIXART_PSEUDOREG_DBRD_TYPE_OFFSET)));
454
455 if (mgr->board_type == MIXART_DAUGHTER_TYPE_NONE)
456 break; /* no daughter board; the file does not have to be loaded, continue after the switch */
457
458 /* only if aesebu daughter board presence (elf code must run) */
459 if (mgr->board_type != MIXART_DAUGHTER_TYPE_AES )
460 return -EINVAL;
461
462 /* daughter should be idle */
463 if( status_daught != 0 ) {
464 printk( KERN_ERR "daughter load error ! status = %d\n", status_daught);
465 return -EIO; /* modprob -r may help ? */
466 }
467
468 /* check daughterboard xilinx validity */
469 if (((u32*)(dsp->data))[0] == 0xffffffff)
470 return -EINVAL;
471 if (dsp->size % 4)
472 return -EINVAL;
473
474 /* inform mixart about the size of the file */
475 writel_be( dsp->size, MIXART_MEM( mgr, MIXART_PSEUDOREG_DXLX_SIZE_OFFSET ));
476
477 /* set daughterboard status to 1 */
478 writel_be( 1, MIXART_MEM( mgr, MIXART_PSEUDOREG_DXLX_STATUS_OFFSET ));
479
480 /* wait for status == 2 */
481 err = mixart_wait_nice_for_register_value( mgr, MIXART_PSEUDOREG_DXLX_STATUS_OFFSET, 1, 2, 30); /* 300msec */
482 if (err < 0) {
483 snd_printk( KERN_ERR "daughter board load error\n");
484 return err;
485 }
486
487 /* get the address where to write the file */
488 val = readl_be( MIXART_MEM( mgr, MIXART_PSEUDOREG_DXLX_BASE_ADDR_OFFSET ));
489 if (!val)
490 return -EINVAL;
491
492 /* copy daughterboard xilinx code */
493 memcpy_toio( MIXART_MEM( mgr, val), dsp->data, dsp->size);
494
495 /* set daughterboard status to 4 */
496 writel_be( 4, MIXART_MEM( mgr, MIXART_PSEUDOREG_DXLX_STATUS_OFFSET ));
497
498 /* continue with init */
499 break;
500 } /* end of switch file index*/
501
502 /* wait for daughter status == 3 */
503 err = mixart_wait_nice_for_register_value( mgr, MIXART_PSEUDOREG_DXLX_STATUS_OFFSET, 1, 3, 300); /* 3sec */
504 if (err < 0) {
505 snd_printk( KERN_ERR "daughter board could not be initialised\n");
506 return err;
507 }
508
509 /* init mailbox (communication with embedded) */
510 snd_mixart_init_mailbox(mgr);
511
512 /* first communication with embedded */
513 err = mixart_first_init(mgr);
514 if (err < 0) {
515 snd_printk( KERN_ERR "miXart could not be set up\n");
516 return err;
517 }
518
519 /* create devices and mixer in accordance with HW options*/
520 for (card_index = 0; card_index < mgr->num_cards; card_index++) {
521 struct snd_mixart *chip = mgr->chip[card_index];
522
523 if ((err = snd_mixart_create_pcm(chip)) < 0)
524 return err;
525
526 if (card_index == 0) {
527 if ((err = snd_mixart_create_mixer(chip->mgr)) < 0)
528 return err;
529 }
530
531 if ((err = snd_card_register(chip->card)) < 0)
532 return err;
533 };
534
535 snd_printdd("miXart firmware downloaded and successfully set up\n");
536
537 return 0;
538 }
539
540
541 #if defined(CONFIG_FW_LOADER) || defined(CONFIG_FW_LOADER_MODULE)
542 #if !defined(CONFIG_USE_MIXARTLOADER) && !defined(CONFIG_SND_MIXART) /* built-in kernel */
543 #define SND_MIXART_FW_LOADER /* use the standard firmware loader */
544 #endif
545 #endif
546
547 #ifdef SND_MIXART_FW_LOADER
548
549 int snd_mixart_setup_firmware(struct mixart_mgr *mgr)
550 {
551 static char *fw_files[3] = {
552 "miXart8.xlx", "miXart8.elf", "miXart8AES.xlx"
553 };
554 char path[32];
555
556 const struct firmware *fw_entry;
557 int i, err;
558
559 for (i = 0; i < 3; i++) {
560 sprintf(path, "mixart/%s", fw_files[i]);
561 if (request_firmware(&fw_entry, path, &mgr->pci->dev)) {
562 snd_printk(KERN_ERR "miXart: can't load firmware %s\n", path);
563 return -ENOENT;
564 }
565 /* fake hwdep dsp record */
566 err = mixart_dsp_load(mgr, i, fw_entry);
567 release_firmware(fw_entry);
568 if (err < 0)
569 return err;
570 mgr->dsp_loaded |= 1 << i;
571 }
572 return 0;
573 }
574
575 MODULE_FIRMWARE("mixart/miXart8.xlx");
576 MODULE_FIRMWARE("mixart/miXart8.elf");
577 MODULE_FIRMWARE("mixart/miXart8AES.xlx");
578
579 #else /* old style firmware loading */
580
581 /* miXart hwdep interface id string */
582 #define SND_MIXART_HWDEP_ID "miXart Loader"
583
584 static int mixart_hwdep_open(struct snd_hwdep *hw, struct file *file)
585 {
586 return 0;
587 }
588
589 static int mixart_hwdep_release(struct snd_hwdep *hw, struct file *file)
590 {
591 return 0;
592 }
593
594 static int mixart_hwdep_dsp_status(struct snd_hwdep *hw,
595 struct snd_hwdep_dsp_status *info)
596 {
597 struct mixart_mgr *mgr = hw->private_data;
598
599 strcpy(info->id, "miXart");
600 info->num_dsps = MIXART_HARDW_FILES_MAX_INDEX;
601
602 if (mgr->dsp_loaded & (1 << MIXART_MOTHERBOARD_ELF_INDEX))
603 info->chip_ready = 1;
604
605 info->version = MIXART_DRIVER_VERSION;
606 return 0;
607 }
608
609 static int mixart_hwdep_dsp_load(struct snd_hwdep *hw,
610 struct snd_hwdep_dsp_image *dsp)
611 {
612 struct mixart_mgr* mgr = hw->private_data;
613 struct firmware fw;
614 int err;
615
616 fw.size = dsp->length;
617 fw.data = vmalloc(dsp->length);
618 if (! fw.data) {
619 snd_printk(KERN_ERR "miXart: cannot allocate image size %d\n",
620 (int)dsp->length);
621 return -ENOMEM;
622 }
623 if (copy_from_user((void *) fw.data, dsp->image, dsp->length)) {
624 vfree(fw.data);
625 return -EFAULT;
626 }
627 err = mixart_dsp_load(mgr, dsp->index, &fw);
628 vfree(fw.data);
629 if (err < 0)
630 return err;
631 mgr->dsp_loaded |= 1 << dsp->index;
632 return err;
633 }
634
635 int snd_mixart_setup_firmware(struct mixart_mgr *mgr)
636 {
637 int err;
638 struct snd_hwdep *hw;
639
640 /* only create hwdep interface for first cardX (see "index" module parameter)*/
641 if ((err = snd_hwdep_new(mgr->chip[0]->card, SND_MIXART_HWDEP_ID, 0, &hw)) < 0)
642 return err;
643
644 hw->iface = SNDRV_HWDEP_IFACE_MIXART;
645 hw->private_data = mgr;
646 hw->ops.open = mixart_hwdep_open;
647 hw->ops.release = mixart_hwdep_release;
648 hw->ops.dsp_status = mixart_hwdep_dsp_status;
649 hw->ops.dsp_load = mixart_hwdep_dsp_load;
650 hw->exclusive = 1;
651 sprintf(hw->name, SND_MIXART_HWDEP_ID);
652 mgr->dsp_loaded = 0;
653
654 return snd_card_register(mgr->chip[0]->card);
655 }
656
657 #endif /* SND_MIXART_FW_LOADER */
Nao low-level kernelspace/userspace library that runs on our robots, Nao-Team HTWK