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dd7b254d GP |
1 | /**************************************************************************** |
2 | ||
3 | Copyright Echo Digital Audio Corporation (c) 1998 - 2004 | |
4 | All rights reserved | |
5 | www.echoaudio.com | |
6 | ||
7 | This file is part of Echo Digital Audio's generic driver library. | |
8 | ||
9 | Echo Digital Audio's generic driver library is free software; | |
10 | you can redistribute it and/or modify it under the terms of | |
11 | the GNU General Public License as published by the Free Software | |
12 | Foundation. | |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with this program; if not, write to the Free Software | |
21 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, | |
22 | MA 02111-1307, USA. | |
23 | ||
24 | ************************************************************************* | |
25 | ||
26 | Translation from C++ and adaptation for use in ALSA-Driver | |
27 | were made by Giuliano Pochini <pochini@shiny.it> | |
28 | ||
29 | ****************************************************************************/ | |
30 | ||
31 | #if PAGE_SIZE < 4096 | |
32 | #error PAGE_SIZE is < 4k | |
33 | #endif | |
34 | ||
35 | static int restore_dsp_rettings(struct echoaudio *chip); | |
36 | ||
37 | ||
38 | /* Some vector commands involve the DSP reading or writing data to and from the | |
39 | comm page; if you send one of these commands to the DSP, it will complete the | |
40 | command and then write a non-zero value to the Handshake field in the | |
41 | comm page. This function waits for the handshake to show up. */ | |
42 | static int wait_handshake(struct echoaudio *chip) | |
43 | { | |
44 | int i; | |
45 | ||
22d3a200 | 46 | /* Wait up to 20ms for the handshake from the DSP */ |
dd7b254d GP |
47 | for (i = 0; i < HANDSHAKE_TIMEOUT; i++) { |
48 | /* Look for the handshake value */ | |
22d3a200 | 49 | barrier(); |
dd7b254d | 50 | if (chip->comm_page->handshake) { |
dd7b254d GP |
51 | return 0; |
52 | } | |
53 | udelay(1); | |
54 | } | |
55 | ||
ece7a36d | 56 | dev_err(chip->card->dev, "wait_handshake(): Timeout waiting for DSP\n"); |
dd7b254d GP |
57 | return -EBUSY; |
58 | } | |
59 | ||
60 | ||
61 | ||
62 | /* Much of the interaction between the DSP and the driver is done via vector | |
63 | commands; send_vector writes a vector command to the DSP. Typically, this | |
64 | causes the DSP to read or write fields in the comm page. | |
65 | PCI posting is not required thanks to the handshake logic. */ | |
66 | static int send_vector(struct echoaudio *chip, u32 command) | |
67 | { | |
68 | int i; | |
69 | ||
70 | wmb(); /* Flush all pending writes before sending the command */ | |
71 | ||
72 | /* Wait up to 100ms for the "vector busy" bit to be off */ | |
73 | for (i = 0; i < VECTOR_BUSY_TIMEOUT; i++) { | |
74 | if (!(get_dsp_register(chip, CHI32_VECTOR_REG) & | |
75 | CHI32_VECTOR_BUSY)) { | |
76 | set_dsp_register(chip, CHI32_VECTOR_REG, command); | |
77 | /*if (i) DE_ACT(("send_vector time: %d\n", i));*/ | |
78 | return 0; | |
79 | } | |
80 | udelay(1); | |
81 | } | |
82 | ||
b5b4a41b | 83 | dev_err(chip->card->dev, "timeout on send_vector\n"); |
dd7b254d GP |
84 | return -EBUSY; |
85 | } | |
86 | ||
87 | ||
88 | ||
89 | /* write_dsp writes a 32-bit value to the DSP; this is used almost | |
90 | exclusively for loading the DSP. */ | |
91 | static int write_dsp(struct echoaudio *chip, u32 data) | |
92 | { | |
93 | u32 status, i; | |
94 | ||
95 | for (i = 0; i < 10000000; i++) { /* timeout = 10s */ | |
96 | status = get_dsp_register(chip, CHI32_STATUS_REG); | |
97 | if ((status & CHI32_STATUS_HOST_WRITE_EMPTY) != 0) { | |
98 | set_dsp_register(chip, CHI32_DATA_REG, data); | |
99 | wmb(); /* write it immediately */ | |
100 | return 0; | |
101 | } | |
102 | udelay(1); | |
103 | cond_resched(); | |
104 | } | |
105 | ||
3f6175ec MB |
106 | chip->bad_board = true; /* Set true until DSP re-loaded */ |
107 | dev_dbg(chip->card->dev, "write_dsp: Set bad_board to true\n"); | |
dd7b254d GP |
108 | return -EIO; |
109 | } | |
110 | ||
111 | ||
112 | ||
113 | /* read_dsp reads a 32-bit value from the DSP; this is used almost | |
114 | exclusively for loading the DSP and checking the status of the ASIC. */ | |
115 | static int read_dsp(struct echoaudio *chip, u32 *data) | |
116 | { | |
117 | u32 status, i; | |
118 | ||
119 | for (i = 0; i < READ_DSP_TIMEOUT; i++) { | |
120 | status = get_dsp_register(chip, CHI32_STATUS_REG); | |
121 | if ((status & CHI32_STATUS_HOST_READ_FULL) != 0) { | |
122 | *data = get_dsp_register(chip, CHI32_DATA_REG); | |
123 | return 0; | |
124 | } | |
125 | udelay(1); | |
126 | cond_resched(); | |
127 | } | |
128 | ||
3f6175ec MB |
129 | chip->bad_board = true; /* Set true until DSP re-loaded */ |
130 | dev_err(chip->card->dev, "read_dsp: Set bad_board to true\n"); | |
dd7b254d GP |
131 | return -EIO; |
132 | } | |
133 | ||
134 | ||
135 | ||
136 | /**************************************************************************** | |
137 | Firmware loading functions | |
138 | ****************************************************************************/ | |
139 | ||
140 | /* This function is used to read back the serial number from the DSP; | |
141 | this is triggered by the SET_COMMPAGE_ADDR command. | |
142 | Only some early Echogals products have serial numbers in the ROM; | |
143 | the serial number is not used, but you still need to do this as | |
144 | part of the DSP load process. */ | |
145 | static int read_sn(struct echoaudio *chip) | |
146 | { | |
147 | int i; | |
148 | u32 sn[6]; | |
149 | ||
150 | for (i = 0; i < 5; i++) { | |
151 | if (read_dsp(chip, &sn[i])) { | |
ece7a36d TI |
152 | dev_err(chip->card->dev, |
153 | "Failed to read serial number\n"); | |
dd7b254d GP |
154 | return -EIO; |
155 | } | |
156 | } | |
b5b4a41b SM |
157 | dev_dbg(chip->card->dev, |
158 | "Read serial number %08x %08x %08x %08x %08x\n", | |
159 | sn[0], sn[1], sn[2], sn[3], sn[4]); | |
dd7b254d GP |
160 | return 0; |
161 | } | |
162 | ||
163 | ||
164 | ||
165 | #ifndef ECHOCARD_HAS_ASIC | |
166 | /* This card has no ASIC, just return ok */ | |
167 | static inline int check_asic_status(struct echoaudio *chip) | |
168 | { | |
3f6175ec | 169 | chip->asic_loaded = true; |
dd7b254d GP |
170 | return 0; |
171 | } | |
172 | ||
173 | #endif /* !ECHOCARD_HAS_ASIC */ | |
174 | ||
175 | ||
176 | ||
177 | #ifdef ECHOCARD_HAS_ASIC | |
178 | ||
179 | /* Load ASIC code - done after the DSP is loaded */ | |
19b50063 | 180 | static int load_asic_generic(struct echoaudio *chip, u32 cmd, short asic) |
dd7b254d GP |
181 | { |
182 | const struct firmware *fw; | |
183 | int err; | |
184 | u32 i, size; | |
185 | u8 *code; | |
186 | ||
19b50063 GP |
187 | err = get_firmware(&fw, chip, asic); |
188 | if (err < 0) { | |
ece7a36d | 189 | dev_warn(chip->card->dev, "Firmware not found !\n"); |
dd7b254d GP |
190 | return err; |
191 | } | |
192 | ||
193 | code = (u8 *)fw->data; | |
194 | size = fw->size; | |
195 | ||
196 | /* Send the "Here comes the ASIC" command */ | |
197 | if (write_dsp(chip, cmd) < 0) | |
198 | goto la_error; | |
199 | ||
200 | /* Write length of ASIC file in bytes */ | |
201 | if (write_dsp(chip, size) < 0) | |
202 | goto la_error; | |
203 | ||
204 | for (i = 0; i < size; i++) { | |
205 | if (write_dsp(chip, code[i]) < 0) | |
206 | goto la_error; | |
207 | } | |
208 | ||
e3690869 | 209 | free_firmware(fw, chip); |
dd7b254d GP |
210 | return 0; |
211 | ||
212 | la_error: | |
b5b4a41b | 213 | dev_err(chip->card->dev, "failed on write_dsp\n"); |
e3690869 | 214 | free_firmware(fw, chip); |
dd7b254d GP |
215 | return -EIO; |
216 | } | |
217 | ||
218 | #endif /* ECHOCARD_HAS_ASIC */ | |
219 | ||
220 | ||
221 | ||
222 | #ifdef DSP_56361 | |
223 | ||
224 | /* Install the resident loader for 56361 DSPs; The resident loader is on | |
225 | the EPROM on the board for 56301 DSP. The resident loader is a tiny little | |
226 | program that is used to load the real DSP code. */ | |
227 | static int install_resident_loader(struct echoaudio *chip) | |
228 | { | |
229 | u32 address; | |
230 | int index, words, i; | |
231 | u16 *code; | |
232 | u32 status; | |
233 | const struct firmware *fw; | |
234 | ||
235 | /* 56361 cards only! This check is required by the old 56301-based | |
236 | Mona and Gina24 */ | |
237 | if (chip->device_id != DEVICE_ID_56361) | |
238 | return 0; | |
239 | ||
240 | /* Look to see if the resident loader is present. If the resident | |
241 | loader is already installed, host flag 5 will be on. */ | |
242 | status = get_dsp_register(chip, CHI32_STATUS_REG); | |
243 | if (status & CHI32_STATUS_REG_HF5) { | |
b5b4a41b SM |
244 | dev_dbg(chip->card->dev, |
245 | "Resident loader already installed; status is 0x%x\n", | |
246 | status); | |
dd7b254d GP |
247 | return 0; |
248 | } | |
249 | ||
19b50063 GP |
250 | i = get_firmware(&fw, chip, FW_361_LOADER); |
251 | if (i < 0) { | |
ece7a36d | 252 | dev_warn(chip->card->dev, "Firmware not found !\n"); |
dd7b254d GP |
253 | return i; |
254 | } | |
255 | ||
256 | /* The DSP code is an array of 16 bit words. The array is divided up | |
257 | into sections. The first word of each section is the size in words, | |
258 | followed by the section type. | |
259 | Since DSP addresses and data are 24 bits wide, they each take up two | |
260 | 16 bit words in the array. | |
261 | This is a lot like the other loader loop, but it's not a loop, you | |
262 | don't write the memory type, and you don't write a zero at the end. */ | |
263 | ||
264 | /* Set DSP format bits for 24 bit mode */ | |
265 | set_dsp_register(chip, CHI32_CONTROL_REG, | |
266 | get_dsp_register(chip, CHI32_CONTROL_REG) | 0x900); | |
267 | ||
268 | code = (u16 *)fw->data; | |
269 | ||
270 | /* Skip the header section; the first word in the array is the size | |
271 | of the first section, so the first real section of code is pointed | |
272 | to by Code[0]. */ | |
273 | index = code[0]; | |
274 | ||
275 | /* Skip the section size, LRS block type, and DSP memory type */ | |
276 | index += 3; | |
277 | ||
278 | /* Get the number of DSP words to write */ | |
279 | words = code[index++]; | |
280 | ||
281 | /* Get the DSP address for this block; 24 bits, so build from two words */ | |
282 | address = ((u32)code[index] << 16) + code[index + 1]; | |
283 | index += 2; | |
284 | ||
285 | /* Write the count to the DSP */ | |
286 | if (write_dsp(chip, words)) { | |
b5b4a41b SM |
287 | dev_err(chip->card->dev, |
288 | "install_resident_loader: Failed to write word count!\n"); | |
dd7b254d GP |
289 | goto irl_error; |
290 | } | |
291 | /* Write the DSP address */ | |
292 | if (write_dsp(chip, address)) { | |
b5b4a41b SM |
293 | dev_err(chip->card->dev, |
294 | "install_resident_loader: Failed to write DSP address!\n"); | |
dd7b254d GP |
295 | goto irl_error; |
296 | } | |
297 | /* Write out this block of code to the DSP */ | |
298 | for (i = 0; i < words; i++) { | |
299 | u32 data; | |
300 | ||
301 | data = ((u32)code[index] << 16) + code[index + 1]; | |
302 | if (write_dsp(chip, data)) { | |
b5b4a41b SM |
303 | dev_err(chip->card->dev, |
304 | "install_resident_loader: Failed to write DSP code\n"); | |
dd7b254d GP |
305 | goto irl_error; |
306 | } | |
307 | index += 2; | |
308 | } | |
309 | ||
310 | /* Wait for flag 5 to come up */ | |
311 | for (i = 0; i < 200; i++) { /* Timeout is 50us * 200 = 10ms */ | |
312 | udelay(50); | |
313 | status = get_dsp_register(chip, CHI32_STATUS_REG); | |
314 | if (status & CHI32_STATUS_REG_HF5) | |
315 | break; | |
316 | } | |
317 | ||
318 | if (i == 200) { | |
b5b4a41b | 319 | dev_err(chip->card->dev, "Resident loader failed to set HF5\n"); |
dd7b254d GP |
320 | goto irl_error; |
321 | } | |
322 | ||
b5b4a41b | 323 | dev_dbg(chip->card->dev, "Resident loader successfully installed\n"); |
e3690869 | 324 | free_firmware(fw, chip); |
dd7b254d GP |
325 | return 0; |
326 | ||
327 | irl_error: | |
e3690869 | 328 | free_firmware(fw, chip); |
dd7b254d GP |
329 | return -EIO; |
330 | } | |
331 | ||
332 | #endif /* DSP_56361 */ | |
333 | ||
334 | ||
335 | static int load_dsp(struct echoaudio *chip, u16 *code) | |
336 | { | |
337 | u32 address, data; | |
338 | int index, words, i; | |
339 | ||
340 | if (chip->dsp_code == code) { | |
b5b4a41b | 341 | dev_warn(chip->card->dev, "DSP is already loaded!\n"); |
dd7b254d GP |
342 | return 0; |
343 | } | |
3f6175ec | 344 | chip->bad_board = true; /* Set true until DSP loaded */ |
dd7b254d | 345 | chip->dsp_code = NULL; /* Current DSP code not loaded */ |
3f6175ec | 346 | chip->asic_loaded = false; /* Loading the DSP code will reset the ASIC */ |
dd7b254d | 347 | |
3f6175ec | 348 | dev_dbg(chip->card->dev, "load_dsp: Set bad_board to true\n"); |
dd7b254d GP |
349 | |
350 | /* If this board requires a resident loader, install it. */ | |
351 | #ifdef DSP_56361 | |
352 | if ((i = install_resident_loader(chip)) < 0) | |
353 | return i; | |
354 | #endif | |
355 | ||
356 | /* Send software reset command */ | |
357 | if (send_vector(chip, DSP_VC_RESET) < 0) { | |
b5b4a41b SM |
358 | dev_err(chip->card->dev, |
359 | "LoadDsp: send_vector DSP_VC_RESET failed, Critical Failure\n"); | |
dd7b254d GP |
360 | return -EIO; |
361 | } | |
362 | /* Delay 10us */ | |
363 | udelay(10); | |
364 | ||
365 | /* Wait 10ms for HF3 to indicate that software reset is complete */ | |
366 | for (i = 0; i < 1000; i++) { /* Timeout is 10us * 1000 = 10ms */ | |
367 | if (get_dsp_register(chip, CHI32_STATUS_REG) & | |
368 | CHI32_STATUS_REG_HF3) | |
369 | break; | |
370 | udelay(10); | |
371 | } | |
372 | ||
373 | if (i == 1000) { | |
b5b4a41b SM |
374 | dev_err(chip->card->dev, |
375 | "load_dsp: Timeout waiting for CHI32_STATUS_REG_HF3\n"); | |
dd7b254d GP |
376 | return -EIO; |
377 | } | |
378 | ||
379 | /* Set DSP format bits for 24 bit mode now that soft reset is done */ | |
380 | set_dsp_register(chip, CHI32_CONTROL_REG, | |
381 | get_dsp_register(chip, CHI32_CONTROL_REG) | 0x900); | |
382 | ||
383 | /* Main loader loop */ | |
384 | ||
385 | index = code[0]; | |
386 | for (;;) { | |
387 | int block_type, mem_type; | |
388 | ||
389 | /* Total Block Size */ | |
390 | index++; | |
391 | ||
392 | /* Block Type */ | |
393 | block_type = code[index]; | |
394 | if (block_type == 4) /* We're finished */ | |
395 | break; | |
396 | ||
397 | index++; | |
398 | ||
399 | /* Memory Type P=0,X=1,Y=2 */ | |
400 | mem_type = code[index++]; | |
401 | ||
402 | /* Block Code Size */ | |
403 | words = code[index++]; | |
404 | if (words == 0) /* We're finished */ | |
405 | break; | |
406 | ||
407 | /* Start Address */ | |
408 | address = ((u32)code[index] << 16) + code[index + 1]; | |
409 | index += 2; | |
410 | ||
411 | if (write_dsp(chip, words) < 0) { | |
b5b4a41b SM |
412 | dev_err(chip->card->dev, |
413 | "load_dsp: failed to write number of DSP words\n"); | |
dd7b254d GP |
414 | return -EIO; |
415 | } | |
416 | if (write_dsp(chip, address) < 0) { | |
b5b4a41b SM |
417 | dev_err(chip->card->dev, |
418 | "load_dsp: failed to write DSP address\n"); | |
dd7b254d GP |
419 | return -EIO; |
420 | } | |
421 | if (write_dsp(chip, mem_type) < 0) { | |
b5b4a41b SM |
422 | dev_err(chip->card->dev, |
423 | "load_dsp: failed to write DSP memory type\n"); | |
dd7b254d GP |
424 | return -EIO; |
425 | } | |
426 | /* Code */ | |
427 | for (i = 0; i < words; i++, index+=2) { | |
428 | data = ((u32)code[index] << 16) + code[index + 1]; | |
429 | if (write_dsp(chip, data) < 0) { | |
b5b4a41b SM |
430 | dev_err(chip->card->dev, |
431 | "load_dsp: failed to write DSP data\n"); | |
dd7b254d GP |
432 | return -EIO; |
433 | } | |
434 | } | |
435 | } | |
436 | ||
437 | if (write_dsp(chip, 0) < 0) { /* We're done!!! */ | |
b5b4a41b SM |
438 | dev_err(chip->card->dev, |
439 | "load_dsp: Failed to write final zero\n"); | |
dd7b254d GP |
440 | return -EIO; |
441 | } | |
442 | udelay(10); | |
443 | ||
444 | for (i = 0; i < 5000; i++) { /* Timeout is 100us * 5000 = 500ms */ | |
445 | /* Wait for flag 4 - indicates that the DSP loaded OK */ | |
446 | if (get_dsp_register(chip, CHI32_STATUS_REG) & | |
447 | CHI32_STATUS_REG_HF4) { | |
448 | set_dsp_register(chip, CHI32_CONTROL_REG, | |
449 | get_dsp_register(chip, CHI32_CONTROL_REG) & ~0x1b00); | |
450 | ||
451 | if (write_dsp(chip, DSP_FNC_SET_COMMPAGE_ADDR) < 0) { | |
b5b4a41b SM |
452 | dev_err(chip->card->dev, |
453 | "load_dsp: Failed to write DSP_FNC_SET_COMMPAGE_ADDR\n"); | |
dd7b254d GP |
454 | return -EIO; |
455 | } | |
456 | ||
457 | if (write_dsp(chip, chip->comm_page_phys) < 0) { | |
b5b4a41b SM |
458 | dev_err(chip->card->dev, |
459 | "load_dsp: Failed to write comm page address\n"); | |
dd7b254d GP |
460 | return -EIO; |
461 | } | |
462 | ||
463 | /* Get the serial number via slave mode. | |
464 | This is triggered by the SET_COMMPAGE_ADDR command. | |
465 | We don't actually use the serial number but we have to | |
466 | get it as part of the DSP init voodoo. */ | |
467 | if (read_sn(chip) < 0) { | |
b5b4a41b SM |
468 | dev_err(chip->card->dev, |
469 | "load_dsp: Failed to read serial number\n"); | |
dd7b254d GP |
470 | return -EIO; |
471 | } | |
472 | ||
473 | chip->dsp_code = code; /* Show which DSP code loaded */ | |
3f6175ec | 474 | chip->bad_board = false; /* DSP OK */ |
dd7b254d GP |
475 | return 0; |
476 | } | |
477 | udelay(100); | |
478 | } | |
479 | ||
b5b4a41b SM |
480 | dev_err(chip->card->dev, |
481 | "load_dsp: DSP load timed out waiting for HF4\n"); | |
dd7b254d GP |
482 | return -EIO; |
483 | } | |
484 | ||
485 | ||
486 | ||
487 | /* load_firmware takes care of loading the DSP and any ASIC code. */ | |
488 | static int load_firmware(struct echoaudio *chip) | |
489 | { | |
490 | const struct firmware *fw; | |
491 | int box_type, err; | |
492 | ||
c914f55f | 493 | if (snd_BUG_ON(!chip->comm_page)) |
da3cec35 | 494 | return -EPERM; |
dd7b254d GP |
495 | |
496 | /* See if the ASIC is present and working - only if the DSP is already loaded */ | |
497 | if (chip->dsp_code) { | |
498 | if ((box_type = check_asic_status(chip)) >= 0) | |
499 | return box_type; | |
500 | /* ASIC check failed; force the DSP to reload */ | |
501 | chip->dsp_code = NULL; | |
502 | } | |
503 | ||
19b50063 GP |
504 | err = get_firmware(&fw, chip, chip->dsp_code_to_load); |
505 | if (err < 0) | |
dd7b254d GP |
506 | return err; |
507 | err = load_dsp(chip, (u16 *)fw->data); | |
e3690869 | 508 | free_firmware(fw, chip); |
dd7b254d GP |
509 | if (err < 0) |
510 | return err; | |
511 | ||
512 | if ((box_type = load_asic(chip)) < 0) | |
513 | return box_type; /* error */ | |
514 | ||
dd7b254d GP |
515 | return box_type; |
516 | } | |
517 | ||
518 | ||
519 | ||
520 | /**************************************************************************** | |
521 | Mixer functions | |
522 | ****************************************************************************/ | |
523 | ||
524 | #if defined(ECHOCARD_HAS_INPUT_NOMINAL_LEVEL) || \ | |
525 | defined(ECHOCARD_HAS_OUTPUT_NOMINAL_LEVEL) | |
526 | ||
527 | /* Set the nominal level for an input or output bus (true = -10dBV, false = +4dBu) */ | |
528 | static int set_nominal_level(struct echoaudio *chip, u16 index, char consumer) | |
529 | { | |
da3cec35 TI |
530 | if (snd_BUG_ON(index >= num_busses_out(chip) + num_busses_in(chip))) |
531 | return -EINVAL; | |
dd7b254d GP |
532 | |
533 | /* Wait for the handshake (OK even if ASIC is not loaded) */ | |
534 | if (wait_handshake(chip)) | |
535 | return -EIO; | |
536 | ||
537 | chip->nominal_level[index] = consumer; | |
538 | ||
539 | if (consumer) | |
540 | chip->comm_page->nominal_level_mask |= cpu_to_le32(1 << index); | |
541 | else | |
542 | chip->comm_page->nominal_level_mask &= ~cpu_to_le32(1 << index); | |
543 | ||
544 | return 0; | |
545 | } | |
546 | ||
547 | #endif /* ECHOCARD_HAS_*_NOMINAL_LEVEL */ | |
548 | ||
549 | ||
550 | ||
551 | /* Set the gain for a single physical output channel (dB). */ | |
552 | static int set_output_gain(struct echoaudio *chip, u16 channel, s8 gain) | |
553 | { | |
da3cec35 TI |
554 | if (snd_BUG_ON(channel >= num_busses_out(chip))) |
555 | return -EINVAL; | |
dd7b254d GP |
556 | |
557 | if (wait_handshake(chip)) | |
558 | return -EIO; | |
559 | ||
560 | /* Save the new value */ | |
561 | chip->output_gain[channel] = gain; | |
562 | chip->comm_page->line_out_level[channel] = gain; | |
563 | return 0; | |
564 | } | |
565 | ||
566 | ||
567 | ||
568 | #ifdef ECHOCARD_HAS_MONITOR | |
569 | /* Set the monitor level from an input bus to an output bus. */ | |
570 | static int set_monitor_gain(struct echoaudio *chip, u16 output, u16 input, | |
571 | s8 gain) | |
572 | { | |
da3cec35 TI |
573 | if (snd_BUG_ON(output >= num_busses_out(chip) || |
574 | input >= num_busses_in(chip))) | |
575 | return -EINVAL; | |
dd7b254d GP |
576 | |
577 | if (wait_handshake(chip)) | |
578 | return -EIO; | |
579 | ||
580 | chip->monitor_gain[output][input] = gain; | |
581 | chip->comm_page->monitors[monitor_index(chip, output, input)] = gain; | |
582 | return 0; | |
583 | } | |
584 | #endif /* ECHOCARD_HAS_MONITOR */ | |
585 | ||
586 | ||
587 | /* Tell the DSP to read and update output, nominal & monitor levels in comm page. */ | |
588 | static int update_output_line_level(struct echoaudio *chip) | |
589 | { | |
590 | if (wait_handshake(chip)) | |
591 | return -EIO; | |
592 | clear_handshake(chip); | |
593 | return send_vector(chip, DSP_VC_UPDATE_OUTVOL); | |
594 | } | |
595 | ||
596 | ||
597 | ||
598 | /* Tell the DSP to read and update input levels in comm page */ | |
599 | static int update_input_line_level(struct echoaudio *chip) | |
600 | { | |
601 | if (wait_handshake(chip)) | |
602 | return -EIO; | |
603 | clear_handshake(chip); | |
604 | return send_vector(chip, DSP_VC_UPDATE_INGAIN); | |
605 | } | |
606 | ||
607 | ||
608 | ||
609 | /* set_meters_on turns the meters on or off. If meters are turned on, the DSP | |
610 | will write the meter and clock detect values to the comm page at about 30Hz */ | |
611 | static void set_meters_on(struct echoaudio *chip, char on) | |
612 | { | |
613 | if (on && !chip->meters_enabled) { | |
614 | send_vector(chip, DSP_VC_METERS_ON); | |
615 | chip->meters_enabled = 1; | |
616 | } else if (!on && chip->meters_enabled) { | |
617 | send_vector(chip, DSP_VC_METERS_OFF); | |
618 | chip->meters_enabled = 0; | |
619 | memset((s8 *)chip->comm_page->vu_meter, ECHOGAIN_MUTED, | |
620 | DSP_MAXPIPES); | |
621 | memset((s8 *)chip->comm_page->peak_meter, ECHOGAIN_MUTED, | |
622 | DSP_MAXPIPES); | |
623 | } | |
624 | } | |
625 | ||
626 | ||
627 | ||
628 | /* Fill out an the given array using the current values in the comm page. | |
629 | Meters are written in the comm page by the DSP in this order: | |
630 | Output busses | |
631 | Input busses | |
632 | Output pipes (vmixer cards only) | |
633 | ||
634 | This function assumes there are no more than 16 in/out busses or pipes | |
635 | Meters is an array [3][16][2] of long. */ | |
636 | static void get_audio_meters(struct echoaudio *chip, long *meters) | |
637 | { | |
638 | int i, m, n; | |
639 | ||
640 | m = 0; | |
641 | n = 0; | |
642 | for (i = 0; i < num_busses_out(chip); i++, m++) { | |
643 | meters[n++] = chip->comm_page->vu_meter[m]; | |
644 | meters[n++] = chip->comm_page->peak_meter[m]; | |
645 | } | |
646 | for (; n < 32; n++) | |
647 | meters[n] = 0; | |
648 | ||
649 | #ifdef ECHOCARD_ECHO3G | |
650 | m = E3G_MAX_OUTPUTS; /* Skip unused meters */ | |
651 | #endif | |
652 | ||
653 | for (i = 0; i < num_busses_in(chip); i++, m++) { | |
654 | meters[n++] = chip->comm_page->vu_meter[m]; | |
655 | meters[n++] = chip->comm_page->peak_meter[m]; | |
656 | } | |
657 | for (; n < 64; n++) | |
658 | meters[n] = 0; | |
659 | ||
660 | #ifdef ECHOCARD_HAS_VMIXER | |
661 | for (i = 0; i < num_pipes_out(chip); i++, m++) { | |
662 | meters[n++] = chip->comm_page->vu_meter[m]; | |
663 | meters[n++] = chip->comm_page->peak_meter[m]; | |
664 | } | |
665 | #endif | |
666 | for (; n < 96; n++) | |
667 | meters[n] = 0; | |
668 | } | |
669 | ||
670 | ||
671 | ||
672 | static int restore_dsp_rettings(struct echoaudio *chip) | |
673 | { | |
47b5d028 | 674 | int i, o, err; |
dd7b254d GP |
675 | |
676 | if ((err = check_asic_status(chip)) < 0) | |
677 | return err; | |
678 | ||
47b5d028 | 679 | /* Gina20/Darla20 only. Should be harmless for other cards. */ |
dd7b254d GP |
680 | chip->comm_page->gd_clock_state = GD_CLOCK_UNDEF; |
681 | chip->comm_page->gd_spdif_status = GD_SPDIF_STATUS_UNDEF; | |
682 | chip->comm_page->handshake = 0xffffffff; | |
683 | ||
47b5d028 GP |
684 | /* Restore output busses */ |
685 | for (i = 0; i < num_busses_out(chip); i++) { | |
686 | err = set_output_gain(chip, i, chip->output_gain[i]); | |
687 | if (err < 0) | |
688 | return err; | |
689 | } | |
690 | ||
691 | #ifdef ECHOCARD_HAS_VMIXER | |
692 | for (i = 0; i < num_pipes_out(chip); i++) | |
693 | for (o = 0; o < num_busses_out(chip); o++) { | |
694 | err = set_vmixer_gain(chip, o, i, | |
695 | chip->vmixer_gain[o][i]); | |
696 | if (err < 0) | |
697 | return err; | |
698 | } | |
699 | if (update_vmixer_level(chip) < 0) | |
700 | return -EIO; | |
701 | #endif /* ECHOCARD_HAS_VMIXER */ | |
702 | ||
703 | #ifdef ECHOCARD_HAS_MONITOR | |
704 | for (o = 0; o < num_busses_out(chip); o++) | |
705 | for (i = 0; i < num_busses_in(chip); i++) { | |
706 | err = set_monitor_gain(chip, o, i, | |
707 | chip->monitor_gain[o][i]); | |
708 | if (err < 0) | |
709 | return err; | |
710 | } | |
711 | #endif /* ECHOCARD_HAS_MONITOR */ | |
712 | ||
713 | #ifdef ECHOCARD_HAS_INPUT_GAIN | |
714 | for (i = 0; i < num_busses_in(chip); i++) { | |
715 | err = set_input_gain(chip, i, chip->input_gain[i]); | |
716 | if (err < 0) | |
717 | return err; | |
718 | } | |
719 | #endif /* ECHOCARD_HAS_INPUT_GAIN */ | |
720 | ||
721 | err = update_output_line_level(chip); | |
722 | if (err < 0) | |
dd7b254d GP |
723 | return err; |
724 | ||
47b5d028 GP |
725 | err = update_input_line_level(chip); |
726 | if (err < 0) | |
727 | return err; | |
dd7b254d | 728 | |
47b5d028 GP |
729 | err = set_sample_rate(chip, chip->sample_rate); |
730 | if (err < 0) | |
731 | return err; | |
732 | ||
733 | if (chip->meters_enabled) { | |
734 | err = send_vector(chip, DSP_VC_METERS_ON); | |
735 | if (err < 0) | |
736 | return err; | |
737 | } | |
738 | ||
739 | #ifdef ECHOCARD_HAS_DIGITAL_MODE_SWITCH | |
740 | if (set_digital_mode(chip, chip->digital_mode) < 0) | |
dd7b254d GP |
741 | return -EIO; |
742 | #endif | |
743 | ||
47b5d028 GP |
744 | #ifdef ECHOCARD_HAS_DIGITAL_IO |
745 | if (set_professional_spdif(chip, chip->professional_spdif) < 0) | |
dd7b254d GP |
746 | return -EIO; |
747 | #endif | |
748 | ||
47b5d028 GP |
749 | #ifdef ECHOCARD_HAS_PHANTOM_POWER |
750 | if (set_phantom_power(chip, chip->phantom_power) < 0) | |
dd7b254d | 751 | return -EIO; |
47b5d028 | 752 | #endif |
dd7b254d | 753 | |
47b5d028 GP |
754 | #ifdef ECHOCARD_HAS_EXTERNAL_CLOCK |
755 | /* set_input_clock() also restores automute setting */ | |
756 | if (set_input_clock(chip, chip->input_clock) < 0) | |
dd7b254d | 757 | return -EIO; |
47b5d028 | 758 | #endif |
dd7b254d | 759 | |
47b5d028 GP |
760 | #ifdef ECHOCARD_HAS_OUTPUT_CLOCK_SWITCH |
761 | if (set_output_clock(chip, chip->output_clock) < 0) | |
dd7b254d GP |
762 | return -EIO; |
763 | #endif | |
764 | ||
765 | if (wait_handshake(chip) < 0) | |
766 | return -EIO; | |
767 | clear_handshake(chip); | |
47b5d028 GP |
768 | if (send_vector(chip, DSP_VC_UPDATE_FLAGS) < 0) |
769 | return -EIO; | |
dd7b254d | 770 | |
47b5d028 | 771 | return 0; |
dd7b254d GP |
772 | } |
773 | ||
774 | ||
775 | ||
776 | /**************************************************************************** | |
777 | Transport functions | |
778 | ****************************************************************************/ | |
779 | ||
780 | /* set_audio_format() sets the format of the audio data in host memory for | |
781 | this pipe. Note that _MS_ (mono-to-stereo) playback modes are not used by ALSA | |
782 | but they are here because they are just mono while capturing */ | |
783 | static void set_audio_format(struct echoaudio *chip, u16 pipe_index, | |
784 | const struct audioformat *format) | |
785 | { | |
786 | u16 dsp_format; | |
787 | ||
788 | dsp_format = DSP_AUDIOFORM_SS_16LE; | |
789 | ||
790 | /* Look for super-interleave (no big-endian and 8 bits) */ | |
791 | if (format->interleave > 2) { | |
792 | switch (format->bits_per_sample) { | |
793 | case 16: | |
794 | dsp_format = DSP_AUDIOFORM_SUPER_INTERLEAVE_16LE; | |
795 | break; | |
796 | case 24: | |
797 | dsp_format = DSP_AUDIOFORM_SUPER_INTERLEAVE_24LE; | |
798 | break; | |
799 | case 32: | |
800 | dsp_format = DSP_AUDIOFORM_SUPER_INTERLEAVE_32LE; | |
801 | break; | |
802 | } | |
803 | dsp_format |= format->interleave; | |
804 | } else if (format->data_are_bigendian) { | |
805 | /* For big-endian data, only 32 bit samples are supported */ | |
806 | switch (format->interleave) { | |
807 | case 1: | |
808 | dsp_format = DSP_AUDIOFORM_MM_32BE; | |
809 | break; | |
810 | #ifdef ECHOCARD_HAS_STEREO_BIG_ENDIAN32 | |
811 | case 2: | |
812 | dsp_format = DSP_AUDIOFORM_SS_32BE; | |
813 | break; | |
814 | #endif | |
815 | } | |
816 | } else if (format->interleave == 1 && | |
817 | format->bits_per_sample == 32 && !format->mono_to_stereo) { | |
818 | /* 32 bit little-endian mono->mono case */ | |
819 | dsp_format = DSP_AUDIOFORM_MM_32LE; | |
820 | } else { | |
821 | /* Handle the other little-endian formats */ | |
822 | switch (format->bits_per_sample) { | |
823 | case 8: | |
824 | if (format->interleave == 2) | |
825 | dsp_format = DSP_AUDIOFORM_SS_8; | |
826 | else | |
827 | dsp_format = DSP_AUDIOFORM_MS_8; | |
828 | break; | |
829 | default: | |
830 | case 16: | |
831 | if (format->interleave == 2) | |
832 | dsp_format = DSP_AUDIOFORM_SS_16LE; | |
833 | else | |
834 | dsp_format = DSP_AUDIOFORM_MS_16LE; | |
835 | break; | |
836 | case 24: | |
837 | if (format->interleave == 2) | |
838 | dsp_format = DSP_AUDIOFORM_SS_24LE; | |
839 | else | |
840 | dsp_format = DSP_AUDIOFORM_MS_24LE; | |
841 | break; | |
842 | case 32: | |
843 | if (format->interleave == 2) | |
844 | dsp_format = DSP_AUDIOFORM_SS_32LE; | |
845 | else | |
846 | dsp_format = DSP_AUDIOFORM_MS_32LE; | |
847 | break; | |
848 | } | |
849 | } | |
b5b4a41b SM |
850 | dev_dbg(chip->card->dev, |
851 | "set_audio_format[%d] = %x\n", pipe_index, dsp_format); | |
dd7b254d GP |
852 | chip->comm_page->audio_format[pipe_index] = cpu_to_le16(dsp_format); |
853 | } | |
854 | ||
855 | ||
856 | ||
857 | /* start_transport starts transport for a set of pipes. | |
858 | The bits 1 in channel_mask specify what pipes to start. Only the bit of the | |
859 | first channel must be set, regardless its interleave. | |
860 | Same thing for pause_ and stop_ -trasport below. */ | |
861 | static int start_transport(struct echoaudio *chip, u32 channel_mask, | |
862 | u32 cyclic_mask) | |
863 | { | |
dd7b254d GP |
864 | |
865 | if (wait_handshake(chip)) | |
866 | return -EIO; | |
867 | ||
868 | chip->comm_page->cmd_start |= cpu_to_le32(channel_mask); | |
869 | ||
870 | if (chip->comm_page->cmd_start) { | |
871 | clear_handshake(chip); | |
872 | send_vector(chip, DSP_VC_START_TRANSFER); | |
873 | if (wait_handshake(chip)) | |
874 | return -EIO; | |
875 | /* Keep track of which pipes are transporting */ | |
876 | chip->active_mask |= channel_mask; | |
877 | chip->comm_page->cmd_start = 0; | |
878 | return 0; | |
879 | } | |
880 | ||
b5b4a41b | 881 | dev_err(chip->card->dev, "start_transport: No pipes to start!\n"); |
dd7b254d GP |
882 | return -EINVAL; |
883 | } | |
884 | ||
885 | ||
886 | ||
887 | static int pause_transport(struct echoaudio *chip, u32 channel_mask) | |
888 | { | |
dd7b254d GP |
889 | |
890 | if (wait_handshake(chip)) | |
891 | return -EIO; | |
892 | ||
893 | chip->comm_page->cmd_stop |= cpu_to_le32(channel_mask); | |
894 | chip->comm_page->cmd_reset = 0; | |
895 | if (chip->comm_page->cmd_stop) { | |
896 | clear_handshake(chip); | |
897 | send_vector(chip, DSP_VC_STOP_TRANSFER); | |
898 | if (wait_handshake(chip)) | |
899 | return -EIO; | |
900 | /* Keep track of which pipes are transporting */ | |
901 | chip->active_mask &= ~channel_mask; | |
902 | chip->comm_page->cmd_stop = 0; | |
903 | chip->comm_page->cmd_reset = 0; | |
904 | return 0; | |
905 | } | |
906 | ||
b5b4a41b | 907 | dev_warn(chip->card->dev, "pause_transport: No pipes to stop!\n"); |
dd7b254d GP |
908 | return 0; |
909 | } | |
910 | ||
911 | ||
912 | ||
913 | static int stop_transport(struct echoaudio *chip, u32 channel_mask) | |
914 | { | |
dd7b254d GP |
915 | |
916 | if (wait_handshake(chip)) | |
917 | return -EIO; | |
918 | ||
919 | chip->comm_page->cmd_stop |= cpu_to_le32(channel_mask); | |
920 | chip->comm_page->cmd_reset |= cpu_to_le32(channel_mask); | |
921 | if (chip->comm_page->cmd_reset) { | |
922 | clear_handshake(chip); | |
923 | send_vector(chip, DSP_VC_STOP_TRANSFER); | |
924 | if (wait_handshake(chip)) | |
925 | return -EIO; | |
926 | /* Keep track of which pipes are transporting */ | |
927 | chip->active_mask &= ~channel_mask; | |
928 | chip->comm_page->cmd_stop = 0; | |
929 | chip->comm_page->cmd_reset = 0; | |
930 | return 0; | |
931 | } | |
932 | ||
b5b4a41b | 933 | dev_warn(chip->card->dev, "stop_transport: No pipes to stop!\n"); |
dd7b254d GP |
934 | return 0; |
935 | } | |
936 | ||
937 | ||
938 | ||
939 | static inline int is_pipe_allocated(struct echoaudio *chip, u16 pipe_index) | |
940 | { | |
941 | return (chip->pipe_alloc_mask & (1 << pipe_index)); | |
942 | } | |
943 | ||
944 | ||
945 | ||
946 | /* Stops everything and turns off the DSP. All pipes should be already | |
947 | stopped and unallocated. */ | |
948 | static int rest_in_peace(struct echoaudio *chip) | |
949 | { | |
dd7b254d GP |
950 | |
951 | /* Stops all active pipes (just to be sure) */ | |
952 | stop_transport(chip, chip->active_mask); | |
953 | ||
3f6175ec | 954 | set_meters_on(chip, false); |
dd7b254d GP |
955 | |
956 | #ifdef ECHOCARD_HAS_MIDI | |
3f6175ec | 957 | enable_midi_input(chip, false); |
dd7b254d GP |
958 | #endif |
959 | ||
960 | /* Go to sleep */ | |
961 | if (chip->dsp_code) { | |
962 | /* Make load_firmware do a complete reload */ | |
963 | chip->dsp_code = NULL; | |
964 | /* Put the DSP to sleep */ | |
965 | return send_vector(chip, DSP_VC_GO_COMATOSE); | |
966 | } | |
967 | return 0; | |
968 | } | |
969 | ||
970 | ||
971 | ||
972 | /* Fills the comm page with default values */ | |
973 | static int init_dsp_comm_page(struct echoaudio *chip) | |
974 | { | |
975 | /* Check if the compiler added extra padding inside the structure */ | |
976 | if (offsetof(struct comm_page, midi_output) != 0xbe0) { | |
b5b4a41b SM |
977 | dev_err(chip->card->dev, |
978 | "init_dsp_comm_page() - Invalid struct comm_page structure\n"); | |
dd7b254d GP |
979 | return -EPERM; |
980 | } | |
981 | ||
982 | /* Init all the basic stuff */ | |
983 | chip->card_name = ECHOCARD_NAME; | |
3f6175ec | 984 | chip->bad_board = true; /* Set true until DSP loaded */ |
dd7b254d | 985 | chip->dsp_code = NULL; /* Current DSP code not loaded */ |
3f6175ec | 986 | chip->asic_loaded = false; |
dd7b254d GP |
987 | memset(chip->comm_page, 0, sizeof(struct comm_page)); |
988 | ||
989 | /* Init the comm page */ | |
990 | chip->comm_page->comm_size = | |
e930e995 | 991 | cpu_to_le32(sizeof(struct comm_page)); |
dd7b254d GP |
992 | chip->comm_page->handshake = 0xffffffff; |
993 | chip->comm_page->midi_out_free_count = | |
e930e995 HH |
994 | cpu_to_le32(DSP_MIDI_OUT_FIFO_SIZE); |
995 | chip->comm_page->sample_rate = cpu_to_le32(44100); | |
dd7b254d GP |
996 | |
997 | /* Set line levels so we don't blast any inputs on startup */ | |
998 | memset(chip->comm_page->monitors, ECHOGAIN_MUTED, MONITOR_ARRAY_SIZE); | |
999 | memset(chip->comm_page->vmixer, ECHOGAIN_MUTED, VMIXER_ARRAY_SIZE); | |
1000 | ||
1001 | return 0; | |
1002 | } | |
1003 | ||
1004 | ||
1005 | ||
47b5d028 GP |
1006 | /* This function initializes the chip structure with default values, ie. all |
1007 | * muted and internal clock source. Then it copies the settings to the DSP. | |
1008 | * This MUST be called after the DSP is up and running ! | |
1009 | */ | |
dd7b254d GP |
1010 | static int init_line_levels(struct echoaudio *chip) |
1011 | { | |
47b5d028 GP |
1012 | memset(chip->output_gain, ECHOGAIN_MUTED, sizeof(chip->output_gain)); |
1013 | memset(chip->input_gain, ECHOGAIN_MUTED, sizeof(chip->input_gain)); | |
1014 | memset(chip->monitor_gain, ECHOGAIN_MUTED, sizeof(chip->monitor_gain)); | |
1015 | memset(chip->vmixer_gain, ECHOGAIN_MUTED, sizeof(chip->vmixer_gain)); | |
1016 | chip->input_clock = ECHO_CLOCK_INTERNAL; | |
1017 | chip->output_clock = ECHO_CLOCK_WORD; | |
1018 | chip->sample_rate = 44100; | |
1019 | return restore_dsp_rettings(chip); | |
dd7b254d GP |
1020 | } |
1021 | ||
1022 | ||
1023 | ||
1024 | /* This is low level part of the interrupt handler. | |
1025 | It returns -1 if the IRQ is not ours, or N>=0 if it is, where N is the number | |
1026 | of midi data in the input queue. */ | |
1027 | static int service_irq(struct echoaudio *chip) | |
1028 | { | |
1029 | int st; | |
1030 | ||
1031 | /* Read the DSP status register and see if this DSP generated this interrupt */ | |
1032 | if (get_dsp_register(chip, CHI32_STATUS_REG) & CHI32_STATUS_IRQ) { | |
1033 | st = 0; | |
1034 | #ifdef ECHOCARD_HAS_MIDI | |
1035 | /* Get and parse midi data if present */ | |
1036 | if (chip->comm_page->midi_input[0]) /* The count is at index 0 */ | |
1037 | st = midi_service_irq(chip); /* Returns how many midi bytes we received */ | |
1038 | #endif | |
1039 | /* Clear the hardware interrupt */ | |
1040 | chip->comm_page->midi_input[0] = 0; | |
1041 | send_vector(chip, DSP_VC_ACK_INT); | |
1042 | return st; | |
1043 | } | |
1044 | return -1; | |
1045 | } | |
1046 | ||
1047 | ||
1048 | ||
1049 | ||
1050 | /****************************************************************************** | |
1051 | Functions for opening and closing pipes | |
1052 | ******************************************************************************/ | |
1053 | ||
1054 | /* allocate_pipes is used to reserve audio pipes for your exclusive use. | |
1055 | The call will fail if some pipes are already allocated. */ | |
1056 | static int allocate_pipes(struct echoaudio *chip, struct audiopipe *pipe, | |
1057 | int pipe_index, int interleave) | |
1058 | { | |
1059 | int i; | |
1060 | u32 channel_mask; | |
1061 | char is_cyclic; | |
1062 | ||
b5b4a41b SM |
1063 | dev_dbg(chip->card->dev, |
1064 | "allocate_pipes: ch=%d int=%d\n", pipe_index, interleave); | |
dd7b254d GP |
1065 | |
1066 | if (chip->bad_board) | |
1067 | return -EIO; | |
1068 | ||
1069 | is_cyclic = 1; /* This driver uses cyclic buffers only */ | |
1070 | ||
1071 | for (channel_mask = i = 0; i < interleave; i++) | |
1072 | channel_mask |= 1 << (pipe_index + i); | |
1073 | if (chip->pipe_alloc_mask & channel_mask) { | |
b5b4a41b SM |
1074 | dev_err(chip->card->dev, |
1075 | "allocate_pipes: channel already open\n"); | |
dd7b254d GP |
1076 | return -EAGAIN; |
1077 | } | |
1078 | ||
1079 | chip->comm_page->position[pipe_index] = 0; | |
1080 | chip->pipe_alloc_mask |= channel_mask; | |
1081 | if (is_cyclic) | |
1082 | chip->pipe_cyclic_mask |= channel_mask; | |
1083 | pipe->index = pipe_index; | |
1084 | pipe->interleave = interleave; | |
1085 | pipe->state = PIPE_STATE_STOPPED; | |
1086 | ||
1087 | /* The counter register is where the DSP writes the 32 bit DMA | |
1088 | position for a pipe. The DSP is constantly updating this value as | |
1089 | it moves data. The DMA counter is in units of bytes, not samples. */ | |
1090 | pipe->dma_counter = &chip->comm_page->position[pipe_index]; | |
1091 | *pipe->dma_counter = 0; | |
dd7b254d GP |
1092 | return pipe_index; |
1093 | } | |
1094 | ||
1095 | ||
1096 | ||
1097 | static int free_pipes(struct echoaudio *chip, struct audiopipe *pipe) | |
1098 | { | |
1099 | u32 channel_mask; | |
1100 | int i; | |
1101 | ||
da3cec35 TI |
1102 | if (snd_BUG_ON(!is_pipe_allocated(chip, pipe->index))) |
1103 | return -EINVAL; | |
1104 | if (snd_BUG_ON(pipe->state != PIPE_STATE_STOPPED)) | |
1105 | return -EINVAL; | |
dd7b254d GP |
1106 | |
1107 | for (channel_mask = i = 0; i < pipe->interleave; i++) | |
1108 | channel_mask |= 1 << (pipe->index + i); | |
1109 | ||
1110 | chip->pipe_alloc_mask &= ~channel_mask; | |
1111 | chip->pipe_cyclic_mask &= ~channel_mask; | |
1112 | return 0; | |
1113 | } | |
1114 | ||
1115 | ||
1116 | ||
1117 | /****************************************************************************** | |
1118 | Functions for managing the scatter-gather list | |
1119 | ******************************************************************************/ | |
1120 | ||
1121 | static int sglist_init(struct echoaudio *chip, struct audiopipe *pipe) | |
1122 | { | |
1123 | pipe->sglist_head = 0; | |
1124 | memset(pipe->sgpage.area, 0, PAGE_SIZE); | |
1125 | chip->comm_page->sglist_addr[pipe->index].addr = | |
1126 | cpu_to_le32(pipe->sgpage.addr); | |
1127 | return 0; | |
1128 | } | |
1129 | ||
1130 | ||
1131 | ||
1132 | static int sglist_add_mapping(struct echoaudio *chip, struct audiopipe *pipe, | |
1133 | dma_addr_t address, size_t length) | |
1134 | { | |
1135 | int head = pipe->sglist_head; | |
1136 | struct sg_entry *list = (struct sg_entry *)pipe->sgpage.area; | |
1137 | ||
1138 | if (head < MAX_SGLIST_ENTRIES - 1) { | |
1139 | list[head].addr = cpu_to_le32(address); | |
1140 | list[head].size = cpu_to_le32(length); | |
1141 | pipe->sglist_head++; | |
1142 | } else { | |
b5b4a41b | 1143 | dev_err(chip->card->dev, "SGlist: too many fragments\n"); |
dd7b254d GP |
1144 | return -ENOMEM; |
1145 | } | |
1146 | return 0; | |
1147 | } | |
1148 | ||
1149 | ||
1150 | ||
1151 | static inline int sglist_add_irq(struct echoaudio *chip, struct audiopipe *pipe) | |
1152 | { | |
1153 | return sglist_add_mapping(chip, pipe, 0, 0); | |
1154 | } | |
1155 | ||
1156 | ||
1157 | ||
1158 | static inline int sglist_wrap(struct echoaudio *chip, struct audiopipe *pipe) | |
1159 | { | |
1160 | return sglist_add_mapping(chip, pipe, pipe->sgpage.addr, 0); | |
1161 | } |