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-rw-r--r--sound/oss/cs4281/cs4281m.c4487
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diff --git a/sound/oss/cs4281/cs4281m.c b/sound/oss/cs4281/cs4281m.c
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1/*******************************************************************************
2*
3* "cs4281.c" -- Cirrus Logic-Crystal CS4281 linux audio driver.
4*
5* Copyright (C) 2000,2001 Cirrus Logic Corp.
6* -- adapted from drivers by Thomas Sailer,
7* -- but don't bug him; Problems should go to:
8* -- tom woller (twoller@crystal.cirrus.com) or
9* (audio@crystal.cirrus.com).
10*
11* This program is free software; you can redistribute it and/or modify
12* it under the terms of the GNU General Public License as published by
13* the Free Software Foundation; either version 2 of the License, or
14* (at your option) any later version.
15*
16* This program is distributed in the hope that it will be useful,
17* but WITHOUT ANY WARRANTY; without even the implied warranty of
18* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19* GNU General Public License for more details.
20*
21* You should have received a copy of the GNU General Public License
22* along with this program; if not, write to the Free Software
23* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24*
25* Module command line parameters:
26* none
27*
28* Supported devices:
29* /dev/dsp standard /dev/dsp device, (mostly) OSS compatible
30* /dev/mixer standard /dev/mixer device, (mostly) OSS compatible
31* /dev/midi simple MIDI UART interface, no ioctl
32*
33* Modification History
34* 08/20/00 trw - silence and no stopping DAC until release
35* 08/23/00 trw - added CS_DBG statements, fix interrupt hang issue on DAC stop.
36* 09/18/00 trw - added 16bit only record with conversion
37* 09/24/00 trw - added Enhanced Full duplex (separate simultaneous
38* capture/playback rates)
39* 10/03/00 trw - fixed mmap (fixed GRECORD and the XMMS mmap test plugin
40* libOSSm.so)
41* 10/11/00 trw - modified for 2.4.0-test9 kernel enhancements (NR_MAP removal)
42* 11/03/00 trw - fixed interrupt loss/stutter, added debug.
43* 11/10/00 bkz - added __devinit to cs4281_hw_init()
44* 11/10/00 trw - fixed SMP and capture spinlock hang.
45* 12/04/00 trw - cleaned up CSDEBUG flags and added "defaultorder" moduleparm.
46* 12/05/00 trw - fixed polling (myth2), and added underrun swptr fix.
47* 12/08/00 trw - added PM support.
48* 12/14/00 trw - added wrapper code, builds under 2.4.0, 2.2.17-20, 2.2.17-8
49* (RH/Dell base), 2.2.18, 2.2.12. cleaned up code mods by ident.
50* 12/19/00 trw - added PM support for 2.2 base (apm_callback). other PM cleanup.
51* 12/21/00 trw - added fractional "defaultorder" inputs. if >100 then use
52* defaultorder-100 as power of 2 for the buffer size. example:
53* 106 = 2^(106-100) = 2^6 = 64 bytes for the buffer size.
54*
55*******************************************************************************/
56
57/* uncomment the following line to disable building PM support into the driver */
58//#define NOT_CS4281_PM 1
59
60#include <linux/list.h>
61#include <linux/module.h>
62#include <linux/string.h>
63#include <linux/ioport.h>
64#include <linux/sched.h>
65#include <linux/delay.h>
66#include <linux/sound.h>
67#include <linux/slab.h>
68#include <linux/soundcard.h>
69#include <linux/pci.h>
70#include <linux/bitops.h>
71#include <linux/init.h>
72#include <linux/interrupt.h>
73#include <linux/poll.h>
74#include <linux/fs.h>
75#include <linux/wait.h>
76
77#include <asm/current.h>
78#include <asm/io.h>
79#include <asm/dma.h>
80#include <asm/page.h>
81#include <asm/uaccess.h>
82
83//#include "cs_dm.h"
84#include "cs4281_hwdefs.h"
85#include "cs4281pm.h"
86
87struct cs4281_state;
88
89static void stop_dac(struct cs4281_state *s);
90static void stop_adc(struct cs4281_state *s);
91static void start_dac(struct cs4281_state *s);
92static void start_adc(struct cs4281_state *s);
93#undef OSS_DOCUMENTED_MIXER_SEMANTICS
94
95// ---------------------------------------------------------------------
96
97#ifndef PCI_VENDOR_ID_CIRRUS
98#define PCI_VENDOR_ID_CIRRUS 0x1013
99#endif
100#ifndef PCI_DEVICE_ID_CRYSTAL_CS4281
101#define PCI_DEVICE_ID_CRYSTAL_CS4281 0x6005
102#endif
103
104#define CS4281_MAGIC ((PCI_DEVICE_ID_CRYSTAL_CS4281<<16) | PCI_VENDOR_ID_CIRRUS)
105#define CS4281_CFLR_DEFAULT 0x00000001 /* CFLR must be in AC97 link mode */
106
107// buffer order determines the size of the dma buffer for the driver.
108// under Linux, a smaller buffer allows more responsiveness from many of the
109// applications (e.g. games). A larger buffer allows some of the apps (esound)
110// to not underrun the dma buffer as easily. As default, use 32k (order=3)
111// rather than 64k as some of the games work more responsively.
112// log base 2( buff sz = 32k).
113static unsigned long defaultorder = 3;
114module_param(defaultorder, ulong, 0);
115
116//
117// Turn on/off debugging compilation by commenting out "#define CSDEBUG"
118//
119#define CSDEBUG 1
120#if CSDEBUG
121#define CSDEBUG_INTERFACE 1
122#else
123#undef CSDEBUG_INTERFACE
124#endif
125//
126// cs_debugmask areas
127//
128#define CS_INIT 0x00000001 // initialization and probe functions
129#define CS_ERROR 0x00000002 // tmp debugging bit placeholder
130#define CS_INTERRUPT 0x00000004 // interrupt handler (separate from all other)
131#define CS_FUNCTION 0x00000008 // enter/leave functions
132#define CS_WAVE_WRITE 0x00000010 // write information for wave
133#define CS_WAVE_READ 0x00000020 // read information for wave
134#define CS_MIDI_WRITE 0x00000040 // write information for midi
135#define CS_MIDI_READ 0x00000080 // read information for midi
136#define CS_MPU401_WRITE 0x00000100 // write information for mpu401
137#define CS_MPU401_READ 0x00000200 // read information for mpu401
138#define CS_OPEN 0x00000400 // all open functions in the driver
139#define CS_RELEASE 0x00000800 // all release functions in the driver
140#define CS_PARMS 0x00001000 // functional and operational parameters
141#define CS_IOCTL 0x00002000 // ioctl (non-mixer)
142#define CS_PM 0x00004000 // power management
143#define CS_TMP 0x10000000 // tmp debug mask bit
144
145#define CS_IOCTL_CMD_SUSPEND 0x1 // suspend
146#define CS_IOCTL_CMD_RESUME 0x2 // resume
147//
148// CSDEBUG is usual mode is set to 1, then use the
149// cs_debuglevel and cs_debugmask to turn on or off debugging.
150// Debug level of 1 has been defined to be kernel errors and info
151// that should be printed on any released driver.
152//
153#if CSDEBUG
154#define CS_DBGOUT(mask,level,x) if((cs_debuglevel >= (level)) && ((mask) & cs_debugmask) ) {x;}
155#else
156#define CS_DBGOUT(mask,level,x)
157#endif
158
159#if CSDEBUG
160static unsigned long cs_debuglevel = 1; // levels range from 1-9
161static unsigned long cs_debugmask = CS_INIT | CS_ERROR; // use CS_DBGOUT with various mask values
162module_param(cs_debuglevel, ulong, 0);
163module_param(cs_debugmask, ulong, 0);
164#endif
165#define CS_TRUE 1
166#define CS_FALSE 0
167
168// MIDI buffer sizes
169#define MIDIINBUF 500
170#define MIDIOUTBUF 500
171
172#define FMODE_MIDI_SHIFT 3
173#define FMODE_MIDI_READ (FMODE_READ << FMODE_MIDI_SHIFT)
174#define FMODE_MIDI_WRITE (FMODE_WRITE << FMODE_MIDI_SHIFT)
175
176#define CS4281_MAJOR_VERSION 1
177#define CS4281_MINOR_VERSION 13
178#ifdef __ia64__
179#define CS4281_ARCH 64 //architecture key
180#else
181#define CS4281_ARCH 32 //architecture key
182#endif
183
184#define CS_TYPE_ADC 0
185#define CS_TYPE_DAC 1
186
187
188static const char invalid_magic[] =
189 KERN_CRIT "cs4281: invalid magic value\n";
190
191#define VALIDATE_STATE(s) \
192({ \
193 if (!(s) || (s)->magic != CS4281_MAGIC) { \
194 printk(invalid_magic); \
195 return -ENXIO; \
196 } \
197})
198
199//LIST_HEAD(cs4281_devs);
200static struct list_head cs4281_devs = { &cs4281_devs, &cs4281_devs };
201
202struct cs4281_state;
203
204#include "cs4281_wrapper-24.c"
205
206struct cs4281_state {
207 // magic
208 unsigned int magic;
209
210 // we keep the cards in a linked list
211 struct cs4281_state *next;
212
213 // pcidev is needed to turn off the DDMA controller at driver shutdown
214 struct pci_dev *pcidev;
215 struct list_head list;
216
217 // soundcore stuff
218 int dev_audio;
219 int dev_mixer;
220 int dev_midi;
221
222 // hardware resources
223 unsigned int pBA0phys, pBA1phys;
224 char __iomem *pBA0;
225 char __iomem *pBA1;
226 unsigned int irq;
227
228 // mixer registers
229 struct {
230 unsigned short vol[10];
231 unsigned int recsrc;
232 unsigned int modcnt;
233 unsigned short micpreamp;
234 } mix;
235
236 // wave stuff
237 struct properties {
238 unsigned fmt;
239 unsigned fmt_original; // original requested format
240 unsigned channels;
241 unsigned rate;
242 unsigned char clkdiv;
243 } prop_dac, prop_adc;
244 unsigned conversion:1; // conversion from 16 to 8 bit in progress
245 void *tmpbuff; // tmp buffer for sample conversions
246 unsigned ena;
247 spinlock_t lock;
248 struct mutex open_sem;
249 struct mutex open_sem_adc;
250 struct mutex open_sem_dac;
251 mode_t open_mode;
252 wait_queue_head_t open_wait;
253 wait_queue_head_t open_wait_adc;
254 wait_queue_head_t open_wait_dac;
255
256 dma_addr_t dmaaddr_tmpbuff;
257 unsigned buforder_tmpbuff; // Log base 2 of 'rawbuf' size in bytes..
258 struct dmabuf {
259 void *rawbuf; // Physical address of
260 dma_addr_t dmaaddr;
261 unsigned buforder; // Log base 2 of 'rawbuf' size in bytes..
262 unsigned numfrag; // # of 'fragments' in the buffer.
263 unsigned fragshift; // Log base 2 of fragment size.
264 unsigned hwptr, swptr;
265 unsigned total_bytes; // # bytes process since open.
266 unsigned blocks; // last returned blocks value GETOPTR
267 unsigned wakeup; // interrupt occurred on block
268 int count;
269 unsigned underrun; // underrun flag
270 unsigned error; // over/underrun
271 wait_queue_head_t wait;
272 // redundant, but makes calculations easier
273 unsigned fragsize; // 2**fragshift..
274 unsigned dmasize; // 2**buforder.
275 unsigned fragsamples;
276 // OSS stuff
277 unsigned mapped:1; // Buffer mapped in cs4281_mmap()?
278 unsigned ready:1; // prog_dmabuf_dac()/adc() successful?
279 unsigned endcleared:1;
280 unsigned type:1; // adc or dac buffer (CS_TYPE_XXX)
281 unsigned ossfragshift;
282 int ossmaxfrags;
283 unsigned subdivision;
284 } dma_dac, dma_adc;
285
286 // midi stuff
287 struct {
288 unsigned ird, iwr, icnt;
289 unsigned ord, owr, ocnt;
290 wait_queue_head_t iwait;
291 wait_queue_head_t owait;
292 struct timer_list timer;
293 unsigned char ibuf[MIDIINBUF];
294 unsigned char obuf[MIDIOUTBUF];
295 } midi;
296
297 struct cs4281_pm pm;
298 struct cs4281_pipeline pl[CS4281_NUMBER_OF_PIPELINES];
299};
300
301#include "cs4281pm-24.c"
302
303#if CSDEBUG
304
305// DEBUG ROUTINES
306
307#define SOUND_MIXER_CS_GETDBGLEVEL _SIOWR('M',120, int)
308#define SOUND_MIXER_CS_SETDBGLEVEL _SIOWR('M',121, int)
309#define SOUND_MIXER_CS_GETDBGMASK _SIOWR('M',122, int)
310#define SOUND_MIXER_CS_SETDBGMASK _SIOWR('M',123, int)
311
312#define SOUND_MIXER_CS_APM _SIOWR('M',124, int)
313
314
315static void cs_printioctl(unsigned int x)
316{
317 unsigned int i;
318 unsigned char vidx;
319 // Index of mixtable1[] member is Device ID
320 // and must be <= SOUND_MIXER_NRDEVICES.
321 // Value of array member is index into s->mix.vol[]
322 static const unsigned char mixtable1[SOUND_MIXER_NRDEVICES] = {
323 [SOUND_MIXER_PCM] = 1, // voice
324 [SOUND_MIXER_LINE1] = 2, // AUX
325 [SOUND_MIXER_CD] = 3, // CD
326 [SOUND_MIXER_LINE] = 4, // Line
327 [SOUND_MIXER_SYNTH] = 5, // FM
328 [SOUND_MIXER_MIC] = 6, // Mic
329 [SOUND_MIXER_SPEAKER] = 7, // Speaker
330 [SOUND_MIXER_RECLEV] = 8, // Recording level
331 [SOUND_MIXER_VOLUME] = 9 // Master Volume
332 };
333
334 switch (x) {
335 case SOUND_MIXER_CS_GETDBGMASK:
336 CS_DBGOUT(CS_IOCTL, 4,
337 printk("SOUND_MIXER_CS_GETDBGMASK:\n"));
338 break;
339 case SOUND_MIXER_CS_GETDBGLEVEL:
340 CS_DBGOUT(CS_IOCTL, 4,
341 printk("SOUND_MIXER_CS_GETDBGLEVEL:\n"));
342 break;
343 case SOUND_MIXER_CS_SETDBGMASK:
344 CS_DBGOUT(CS_IOCTL, 4,
345 printk("SOUND_MIXER_CS_SETDBGMASK:\n"));
346 break;
347 case SOUND_MIXER_CS_SETDBGLEVEL:
348 CS_DBGOUT(CS_IOCTL, 4,
349 printk("SOUND_MIXER_CS_SETDBGLEVEL:\n"));
350 break;
351 case OSS_GETVERSION:
352 CS_DBGOUT(CS_IOCTL, 4, printk("OSS_GETVERSION:\n"));
353 break;
354 case SNDCTL_DSP_SYNC:
355 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_SYNC:\n"));
356 break;
357 case SNDCTL_DSP_SETDUPLEX:
358 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_SETDUPLEX:\n"));
359 break;
360 case SNDCTL_DSP_GETCAPS:
361 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_GETCAPS:\n"));
362 break;
363 case SNDCTL_DSP_RESET:
364 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_RESET:\n"));
365 break;
366 case SNDCTL_DSP_SPEED:
367 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_SPEED:\n"));
368 break;
369 case SNDCTL_DSP_STEREO:
370 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_STEREO:\n"));
371 break;
372 case SNDCTL_DSP_CHANNELS:
373 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_CHANNELS:\n"));
374 break;
375 case SNDCTL_DSP_GETFMTS:
376 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_GETFMTS:\n"));
377 break;
378 case SNDCTL_DSP_SETFMT:
379 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_SETFMT:\n"));
380 break;
381 case SNDCTL_DSP_POST:
382 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_POST:\n"));
383 break;
384 case SNDCTL_DSP_GETTRIGGER:
385 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_GETTRIGGER:\n"));
386 break;
387 case SNDCTL_DSP_SETTRIGGER:
388 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_SETTRIGGER:\n"));
389 break;
390 case SNDCTL_DSP_GETOSPACE:
391 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_GETOSPACE:\n"));
392 break;
393 case SNDCTL_DSP_GETISPACE:
394 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_GETISPACE:\n"));
395 break;
396 case SNDCTL_DSP_NONBLOCK:
397 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_NONBLOCK:\n"));
398 break;
399 case SNDCTL_DSP_GETODELAY:
400 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_GETODELAY:\n"));
401 break;
402 case SNDCTL_DSP_GETIPTR:
403 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_GETIPTR:\n"));
404 break;
405 case SNDCTL_DSP_GETOPTR:
406 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_GETOPTR:\n"));
407 break;
408 case SNDCTL_DSP_GETBLKSIZE:
409 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_GETBLKSIZE:\n"));
410 break;
411 case SNDCTL_DSP_SETFRAGMENT:
412 CS_DBGOUT(CS_IOCTL, 4,
413 printk("SNDCTL_DSP_SETFRAGMENT:\n"));
414 break;
415 case SNDCTL_DSP_SUBDIVIDE:
416 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_SUBDIVIDE:\n"));
417 break;
418 case SOUND_PCM_READ_RATE:
419 CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_PCM_READ_RATE:\n"));
420 break;
421 case SOUND_PCM_READ_CHANNELS:
422 CS_DBGOUT(CS_IOCTL, 4,
423 printk("SOUND_PCM_READ_CHANNELS:\n"));
424 break;
425 case SOUND_PCM_READ_BITS:
426 CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_PCM_READ_BITS:\n"));
427 break;
428 case SOUND_PCM_WRITE_FILTER:
429 CS_DBGOUT(CS_IOCTL, 4,
430 printk("SOUND_PCM_WRITE_FILTER:\n"));
431 break;
432 case SNDCTL_DSP_SETSYNCRO:
433 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_SETSYNCRO:\n"));
434 break;
435 case SOUND_PCM_READ_FILTER:
436 CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_PCM_READ_FILTER:\n"));
437 break;
438 case SOUND_MIXER_PRIVATE1:
439 CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_PRIVATE1:\n"));
440 break;
441 case SOUND_MIXER_PRIVATE2:
442 CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_PRIVATE2:\n"));
443 break;
444 case SOUND_MIXER_PRIVATE3:
445 CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_PRIVATE3:\n"));
446 break;
447 case SOUND_MIXER_PRIVATE4:
448 CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_PRIVATE4:\n"));
449 break;
450 case SOUND_MIXER_PRIVATE5:
451 CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_PRIVATE5:\n"));
452 break;
453 case SOUND_MIXER_INFO:
454 CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_INFO:\n"));
455 break;
456 case SOUND_OLD_MIXER_INFO:
457 CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_OLD_MIXER_INFO:\n"));
458 break;
459
460 default:
461 switch (_IOC_NR(x)) {
462 case SOUND_MIXER_VOLUME:
463 CS_DBGOUT(CS_IOCTL, 4,
464 printk("SOUND_MIXER_VOLUME:\n"));
465 break;
466 case SOUND_MIXER_SPEAKER:
467 CS_DBGOUT(CS_IOCTL, 4,
468 printk("SOUND_MIXER_SPEAKER:\n"));
469 break;
470 case SOUND_MIXER_RECLEV:
471 CS_DBGOUT(CS_IOCTL, 4,
472 printk("SOUND_MIXER_RECLEV:\n"));
473 break;
474 case SOUND_MIXER_MIC:
475 CS_DBGOUT(CS_IOCTL, 4,
476 printk("SOUND_MIXER_MIC:\n"));
477 break;
478 case SOUND_MIXER_SYNTH:
479 CS_DBGOUT(CS_IOCTL, 4,
480 printk("SOUND_MIXER_SYNTH:\n"));
481 break;
482 case SOUND_MIXER_RECSRC:
483 CS_DBGOUT(CS_IOCTL, 4,
484 printk("SOUND_MIXER_RECSRC:\n"));
485 break;
486 case SOUND_MIXER_DEVMASK:
487 CS_DBGOUT(CS_IOCTL, 4,
488 printk("SOUND_MIXER_DEVMASK:\n"));
489 break;
490 case SOUND_MIXER_RECMASK:
491 CS_DBGOUT(CS_IOCTL, 4,
492 printk("SOUND_MIXER_RECMASK:\n"));
493 break;
494 case SOUND_MIXER_STEREODEVS:
495 CS_DBGOUT(CS_IOCTL, 4,
496 printk("SOUND_MIXER_STEREODEVS:\n"));
497 break;
498 case SOUND_MIXER_CAPS:
499 CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_CAPS:\n"));
500 break;
501 default:
502 i = _IOC_NR(x);
503 if (i >= SOUND_MIXER_NRDEVICES
504 || !(vidx = mixtable1[i])) {
505 CS_DBGOUT(CS_IOCTL, 4, printk
506 ("UNKNOWN IOCTL: 0x%.8x NR=%d\n",
507 x, i));
508 } else {
509 CS_DBGOUT(CS_IOCTL, 4, printk
510 ("SOUND_MIXER_IOCTL AC9x: 0x%.8x NR=%d\n",
511 x, i));
512 }
513 break;
514 }
515 }
516}
517#endif
518static int prog_dmabuf_adc(struct cs4281_state *s);
519static void prog_codec(struct cs4281_state *s, unsigned type);
520
521// ---------------------------------------------------------------------
522//
523// Hardware Interfaces For the CS4281
524//
525
526
527//******************************************************************************
528// "delayus()-- Delay for the specified # of microseconds.
529//******************************************************************************
530static void delayus(struct cs4281_state *s, u32 delay)
531{
532 u32 j;
533 if ((delay > 9999) && (s->pm.flags & CS4281_PM_IDLE)) {
534 j = (delay * HZ) / 1000000; /* calculate delay in jiffies */
535 if (j < 1)
536 j = 1; /* minimum one jiffy. */
537 current->state = TASK_UNINTERRUPTIBLE;
538 schedule_timeout(j);
539 } else
540 udelay(delay);
541 return;
542}
543
544
545//******************************************************************************
546// "cs4281_read_ac97" -- Reads a word from the specified location in the
547// CS4281's address space(based on the BA0 register).
548//
549// 1. Write ACCAD = Command Address Register = 46Ch for AC97 register address
550// 2. Write ACCDA = Command Data Register = 470h for data to write to AC97 register,
551// 0h for reads.
552// 3. Write ACCTL = Control Register = 460h for initiating the write
553// 4. Read ACCTL = 460h, DCV should be reset by now and 460h = 17h
554// 5. if DCV not cleared, break and return error
555// 6. Read ACSTS = Status Register = 464h, check VSTS bit
556//****************************************************************************
557static int cs4281_read_ac97(struct cs4281_state *card, u32 offset,
558 u32 * value)
559{
560 u32 count, status;
561
562 // Make sure that there is not data sitting
563 // around from a previous uncompleted access.
564 // ACSDA = Status Data Register = 47Ch
565 status = readl(card->pBA0 + BA0_ACSDA);
566
567 // Setup the AC97 control registers on the CS4281 to send the
568 // appropriate command to the AC97 to perform the read.
569 // ACCAD = Command Address Register = 46Ch
570 // ACCDA = Command Data Register = 470h
571 // ACCTL = Control Register = 460h
572 // bit DCV - will clear when process completed
573 // bit CRW - Read command
574 // bit VFRM - valid frame enabled
575 // bit ESYN - ASYNC generation enabled
576
577 // Get the actual AC97 register from the offset
578 writel(offset - BA0_AC97_RESET, card->pBA0 + BA0_ACCAD);
579 writel(0, card->pBA0 + BA0_ACCDA);
580 writel(ACCTL_DCV | ACCTL_CRW | ACCTL_VFRM | ACCTL_ESYN,
581 card->pBA0 + BA0_ACCTL);
582
583 // Wait for the read to occur.
584 for (count = 0; count < 10; count++) {
585 // First, we want to wait for a short time.
586 udelay(25);
587
588 // Now, check to see if the read has completed.
589 // ACCTL = 460h, DCV should be reset by now and 460h = 17h
590 if (!(readl(card->pBA0 + BA0_ACCTL) & ACCTL_DCV))
591 break;
592 }
593
594 // Make sure the read completed.
595 if (readl(card->pBA0 + BA0_ACCTL) & ACCTL_DCV)
596 return 1;
597
598 // Wait for the valid status bit to go active.
599 for (count = 0; count < 10; count++) {
600 // Read the AC97 status register.
601 // ACSTS = Status Register = 464h
602 status = readl(card->pBA0 + BA0_ACSTS);
603
604 // See if we have valid status.
605 // VSTS - Valid Status
606 if (status & ACSTS_VSTS)
607 break;
608 // Wait for a short while.
609 udelay(25);
610 }
611
612 // Make sure we got valid status.
613 if (!(status & ACSTS_VSTS))
614 return 1;
615
616 // Read the data returned from the AC97 register.
617 // ACSDA = Status Data Register = 474h
618 *value = readl(card->pBA0 + BA0_ACSDA);
619
620 // Success.
621 return (0);
622}
623
624
625//****************************************************************************
626//
627// "cs4281_write_ac97()"-- writes a word to the specified location in the
628// CS461x's address space (based on the part's base address zero register).
629//
630// 1. Write ACCAD = Command Address Register = 46Ch for AC97 register address
631// 2. Write ACCDA = Command Data Register = 470h for data to write to AC97 reg.
632// 3. Write ACCTL = Control Register = 460h for initiating the write
633// 4. Read ACCTL = 460h, DCV should be reset by now and 460h = 07h
634// 5. if DCV not cleared, break and return error
635//
636//****************************************************************************
637static int cs4281_write_ac97(struct cs4281_state *card, u32 offset,
638 u32 value)
639{
640 u32 count, status=0;
641
642 CS_DBGOUT(CS_FUNCTION, 2,
643 printk(KERN_INFO "cs4281: cs_4281_write_ac97()+ \n"));
644
645 // Setup the AC97 control registers on the CS4281 to send the
646 // appropriate command to the AC97 to perform the read.
647 // ACCAD = Command Address Register = 46Ch
648 // ACCDA = Command Data Register = 470h
649 // ACCTL = Control Register = 460h
650 // set DCV - will clear when process completed
651 // reset CRW - Write command
652 // set VFRM - valid frame enabled
653 // set ESYN - ASYNC generation enabled
654 // set RSTN - ARST# inactive, AC97 codec not reset
655
656 // Get the actual AC97 register from the offset
657
658 writel(offset - BA0_AC97_RESET, card->pBA0 + BA0_ACCAD);
659 writel(value, card->pBA0 + BA0_ACCDA);
660 writel(ACCTL_DCV | ACCTL_VFRM | ACCTL_ESYN,
661 card->pBA0 + BA0_ACCTL);
662
663 // Wait for the write to occur.
664 for (count = 0; count < 100; count++) {
665 // First, we want to wait for a short time.
666 udelay(25);
667 // Now, check to see if the write has completed.
668 // ACCTL = 460h, DCV should be reset by now and 460h = 07h
669 status = readl(card->pBA0 + BA0_ACCTL);
670 if (!(status & ACCTL_DCV))
671 break;
672 }
673
674 // Make sure the write completed.
675 if (status & ACCTL_DCV) {
676 CS_DBGOUT(CS_ERROR, 1, printk(KERN_INFO
677 "cs4281: cs_4281_write_ac97()- unable to write. ACCTL_DCV active\n"));
678 return 1;
679 }
680 CS_DBGOUT(CS_FUNCTION, 2,
681 printk(KERN_INFO "cs4281: cs_4281_write_ac97()- 0\n"));
682 // Success.
683 return 0;
684}
685
686
687//******************************************************************************
688// "Init4281()" -- Bring up the part.
689//******************************************************************************
690static __devinit int cs4281_hw_init(struct cs4281_state *card)
691{
692 u32 ac97_slotid;
693 u32 temp1, temp2;
694
695 CS_DBGOUT(CS_FUNCTION, 2,
696 printk(KERN_INFO "cs4281: cs4281_hw_init()+ \n"));
697#ifndef NOT_CS4281_PM
698 if(!card)
699 return 1;
700#endif
701 temp2 = readl(card->pBA0 + BA0_CFLR);
702 CS_DBGOUT(CS_INIT | CS_ERROR | CS_PARMS, 4, printk(KERN_INFO
703 "cs4281: cs4281_hw_init() CFLR 0x%x\n", temp2));
704 if(temp2 != CS4281_CFLR_DEFAULT)
705 {
706 CS_DBGOUT(CS_INIT | CS_ERROR, 1, printk(KERN_INFO
707 "cs4281: cs4281_hw_init() CFLR invalid - resetting from 0x%x to 0x%x\n",
708 temp2,CS4281_CFLR_DEFAULT));
709 writel(CS4281_CFLR_DEFAULT, card->pBA0 + BA0_CFLR);
710 temp2 = readl(card->pBA0 + BA0_CFLR);
711 if(temp2 != CS4281_CFLR_DEFAULT)
712 {
713 CS_DBGOUT(CS_INIT | CS_ERROR, 1, printk(KERN_INFO
714 "cs4281: cs4281_hw_init() Invalid hardware - unable to configure CFLR\n"));
715 return 1;
716 }
717 }
718
719 //***************************************7
720 // Set up the Sound System Configuration
721 //***************************************
722
723 // Set the 'Configuration Write Protect' register
724 // to 4281h. Allows vendor-defined configuration
725 // space between 0e4h and 0ffh to be written.
726
727 writel(0x4281, card->pBA0 + BA0_CWPR); // (3e0h)
728
729 // (0), Blast the clock control register to zero so that the
730 // PLL starts out in a known state, and blast the master serial
731 // port control register to zero so that the serial ports also
732 // start out in a known state.
733
734 writel(0, card->pBA0 + BA0_CLKCR1); // (400h)
735 writel(0, card->pBA0 + BA0_SERMC); // (420h)
736
737
738 // (1), Make ESYN go to zero to turn off
739 // the Sync pulse on the AC97 link.
740
741 writel(0, card->pBA0 + BA0_ACCTL);
742 udelay(50);
743
744
745 // (2) Drive the ARST# pin low for a minimum of 1uS (as defined in
746 // the AC97 spec) and then drive it high. This is done for non
747 // AC97 modes since there might be logic external to the CS461x
748 // that uses the ARST# line for a reset.
749
750 writel(0, card->pBA0 + BA0_SPMC); // (3ech)
751 udelay(100);
752 writel(SPMC_RSTN, card->pBA0 + BA0_SPMC);
753 delayus(card,50000); // Wait 50 ms for ABITCLK to become stable.
754
755 // (3) Turn on the Sound System Clocks.
756 writel(CLKCR1_PLLP, card->pBA0 + BA0_CLKCR1); // (400h)
757 delayus(card,50000); // Wait for the PLL to stabilize.
758 // Turn on clocking of the core (CLKCR1(400h) = 0x00000030)
759 writel(CLKCR1_PLLP | CLKCR1_SWCE, card->pBA0 + BA0_CLKCR1);
760
761 // (4) Power on everything for now..
762 writel(0x7E, card->pBA0 + BA0_SSPM); // (740h)
763
764 // (5) Wait for clock stabilization.
765 for (temp1 = 0; temp1 < 1000; temp1++) {
766 udelay(1000);
767 if (readl(card->pBA0 + BA0_CLKCR1) & CLKCR1_DLLRDY)
768 break;
769 }
770 if (!(readl(card->pBA0 + BA0_CLKCR1) & CLKCR1_DLLRDY)) {
771 CS_DBGOUT(CS_ERROR, 1, printk(KERN_ERR
772 "cs4281: DLLRDY failed!\n"));
773 return -EIO;
774 }
775 // (6) Enable ASYNC generation.
776 writel(ACCTL_ESYN, card->pBA0 + BA0_ACCTL); // (460h)
777
778 // Now wait 'for a short while' to allow the AC97
779 // part to start generating bit clock. (so we don't
780 // Try to start the PLL without an input clock.)
781 delayus(card,50000);
782
783 // Set the serial port timing configuration, so that the
784 // clock control circuit gets its clock from the right place.
785 writel(SERMC_PTC_AC97, card->pBA0 + BA0_SERMC); // (420h)=2.
786
787 // (7) Wait for the codec ready signal from the AC97 codec.
788
789 for (temp1 = 0; temp1 < 1000; temp1++) {
790 // Delay a mil to let things settle out and
791 // to prevent retrying the read too quickly.
792 udelay(1000);
793 if (readl(card->pBA0 + BA0_ACSTS) & ACSTS_CRDY) // If ready, (464h)
794 break; // exit the 'for' loop.
795 }
796 if (!(readl(card->pBA0 + BA0_ACSTS) & ACSTS_CRDY)) // If never came ready,
797 {
798 CS_DBGOUT(CS_FUNCTION, 2, printk(KERN_ERR
799 "cs4281: ACSTS never came ready!\n"));
800 return -EIO; // exit initialization.
801 }
802 // (8) Assert the 'valid frame' signal so we can
803 // begin sending commands to the AC97 codec.
804 writel(ACCTL_VFRM | ACCTL_ESYN, card->pBA0 + BA0_ACCTL); // (460h)
805
806 // (9), Wait until CODEC calibration is finished.
807 // Print an error message if it doesn't.
808 for (temp1 = 0; temp1 < 1000; temp1++) {
809 delayus(card,10000);
810 // Read the AC97 Powerdown Control/Status Register.
811 cs4281_read_ac97(card, BA0_AC97_POWERDOWN, &temp2);
812 if ((temp2 & 0x0000000F) == 0x0000000F)
813 break;
814 }
815 if ((temp2 & 0x0000000F) != 0x0000000F) {
816 CS_DBGOUT(CS_FUNCTION, 2, printk(KERN_ERR
817 "cs4281: Codec failed to calibrate. Status = %.8x.\n",
818 temp2));
819 return -EIO;
820 }
821 // (10), Set the serial port timing configuration, so that the
822 // clock control circuit gets its clock from the right place.
823 writel(SERMC_PTC_AC97, card->pBA0 + BA0_SERMC); // (420h)=2.
824
825
826 // (11) Wait until we've sampled input slots 3 & 4 as valid, meaning
827 // that the codec is pumping ADC data across the AC link.
828 for (temp1 = 0; temp1 < 1000; temp1++) {
829 // Delay a mil to let things settle out and
830 // to prevent retrying the read too quickly.
831 delayus(card,1000); //(test)
832
833 // Read the input slot valid register; See
834 // if input slots 3 and 4 are valid yet.
835 if (
836 (readl(card->pBA0 + BA0_ACISV) &
837 (ACISV_ISV3 | ACISV_ISV4)) ==
838 (ACISV_ISV3 | ACISV_ISV4)) break; // Exit the 'for' if slots are valid.
839 }
840 // If we never got valid data, exit initialization.
841 if ((readl(card->pBA0 + BA0_ACISV) & (ACISV_ISV3 | ACISV_ISV4))
842 != (ACISV_ISV3 | ACISV_ISV4)) {
843 CS_DBGOUT(CS_FUNCTION, 2,
844 printk(KERN_ERR
845 "cs4281: Never got valid data!\n"));
846 return -EIO; // If no valid data, exit initialization.
847 }
848 // (12), Start digital data transfer of audio data to the codec.
849 writel(ACOSV_SLV3 | ACOSV_SLV4, card->pBA0 + BA0_ACOSV); // (468h)
850
851
852 //**************************************
853 // Unmute the Master and Alternate
854 // (headphone) volumes. Set to max.
855 //**************************************
856 cs4281_write_ac97(card, BA0_AC97_HEADPHONE_VOLUME, 0);
857 cs4281_write_ac97(card, BA0_AC97_MASTER_VOLUME, 0);
858
859 //******************************************
860 // Power on the DAC(AddDACUser()from main())
861 //******************************************
862 cs4281_read_ac97(card, BA0_AC97_POWERDOWN, &temp1);
863 cs4281_write_ac97(card, BA0_AC97_POWERDOWN, temp1 &= 0xfdff);
864
865 // Wait until we sample a DAC ready state.
866 for (temp2 = 0; temp2 < 32; temp2++) {
867 // Let's wait a mil to let things settle.
868 delayus(card,1000);
869 // Read the current state of the power control reg.
870 cs4281_read_ac97(card, BA0_AC97_POWERDOWN, &temp1);
871 // If the DAC ready state bit is set, stop waiting.
872 if (temp1 & 0x2)
873 break;
874 }
875
876 //******************************************
877 // Power on the ADC(AddADCUser()from main())
878 //******************************************
879 cs4281_read_ac97(card, BA0_AC97_POWERDOWN, &temp1);
880 cs4281_write_ac97(card, BA0_AC97_POWERDOWN, temp1 &= 0xfeff);
881
882 // Wait until we sample ADC ready state.
883 for (temp2 = 0; temp2 < 32; temp2++) {
884 // Let's wait a mil to let things settle.
885 delayus(card,1000);
886 // Read the current state of the power control reg.
887 cs4281_read_ac97(card, BA0_AC97_POWERDOWN, &temp1);
888 // If the ADC ready state bit is set, stop waiting.
889 if (temp1 & 0x1)
890 break;
891 }
892 // Set up 4281 Register contents that
893 // don't change for boot duration.
894
895 // For playback, we map AC97 slot 3 and 4(Left
896 // & Right PCM playback) to DMA Channel 0.
897 // Set the fifo to be 15 bytes at offset zero.
898
899 ac97_slotid = 0x01000f00; // FCR0.RS[4:0]=1(=>slot4, right PCM playback).
900 // FCR0.LS[4:0]=0(=>slot3, left PCM playback).
901 // FCR0.SZ[6-0]=15; FCR0.OF[6-0]=0.
902 writel(ac97_slotid, card->pBA0 + BA0_FCR0); // (180h)
903 writel(ac97_slotid | FCRn_FEN, card->pBA0 + BA0_FCR0); // Turn on FIFO Enable.
904
905 // For capture, we map AC97 slot 10 and 11(Left
906 // and Right PCM Record) to DMA Channel 1.
907 // Set the fifo to be 15 bytes at offset sixteen.
908 ac97_slotid = 0x0B0A0f10; // FCR1.RS[4:0]=11(=>slot11, right PCM record).
909 // FCR1.LS[4:0]=10(=>slot10, left PCM record).
910 // FCR1.SZ[6-0]=15; FCR1.OF[6-0]=16.
911 writel(ac97_slotid | FCRn_PSH, card->pBA0 + BA0_FCR1); // (184h)
912 writel(ac97_slotid | FCRn_FEN, card->pBA0 + BA0_FCR1); // Turn on FIFO Enable.
913
914 // Map the Playback SRC to the same AC97 slots(3 & 4--
915 // --Playback left & right)as DMA channel 0.
916 // Map the record SRC to the same AC97 slots(10 & 11--
917 // -- Record left & right) as DMA channel 1.
918
919 ac97_slotid = 0x0b0a0100; // SCRSA.PRSS[4:0]=1(=>slot4, right PCM playback).
920 // SCRSA.PLSS[4:0]=0(=>slot3, left PCM playback).
921 // SCRSA.CRSS[4:0]=11(=>slot11, right PCM record)
922 // SCRSA.CLSS[4:0]=10(=>slot10, left PCM record).
923 writel(ac97_slotid, card->pBA0 + BA0_SRCSA); // (75ch)
924
925 // Set 'Half Terminal Count Interrupt Enable' and 'Terminal
926 // Count Interrupt Enable' in DMA Control Registers 0 & 1.
927 // Set 'MSK' flag to 1 to keep the DMA engines paused.
928 temp1 = (DCRn_HTCIE | DCRn_TCIE | DCRn_MSK); // (00030001h)
929 writel(temp1, card->pBA0 + BA0_DCR0); // (154h
930 writel(temp1, card->pBA0 + BA0_DCR1); // (15ch)
931
932 // Set 'Auto-Initialize Control' to 'enabled'; For playback,
933 // set 'Transfer Type Control'(TR[1:0]) to 'read transfer',
934 // for record, set Transfer Type Control to 'write transfer'.
935 // All other bits set to zero; Some will be changed @ transfer start.
936 temp1 = (DMRn_DMA | DMRn_AUTO | DMRn_TR_READ); // (20000018h)
937 writel(temp1, card->pBA0 + BA0_DMR0); // (150h)
938 temp1 = (DMRn_DMA | DMRn_AUTO | DMRn_TR_WRITE); // (20000014h)
939 writel(temp1, card->pBA0 + BA0_DMR1); // (158h)
940
941 // Enable DMA interrupts generally, and
942 // DMA0 & DMA1 interrupts specifically.
943 temp1 = readl(card->pBA0 + BA0_HIMR) & 0xfffbfcff;
944 writel(temp1, card->pBA0 + BA0_HIMR);
945
946 CS_DBGOUT(CS_FUNCTION, 2,
947 printk(KERN_INFO "cs4281: cs4281_hw_init()- 0\n"));
948 return 0;
949}
950
951#ifndef NOT_CS4281_PM
952static void printpm(struct cs4281_state *s)
953{
954 CS_DBGOUT(CS_PM, 9, printk("pm struct:\n"));
955 CS_DBGOUT(CS_PM, 9, printk("flags:0x%x u32CLKCR1_SAVE: 0%x u32SSPMValue: 0x%x\n",
956 (unsigned)s->pm.flags,s->pm.u32CLKCR1_SAVE,s->pm.u32SSPMValue));
957 CS_DBGOUT(CS_PM, 9, printk("u32PPLVCvalue: 0x%x u32PPRVCvalue: 0x%x\n",
958 s->pm.u32PPLVCvalue,s->pm.u32PPRVCvalue));
959 CS_DBGOUT(CS_PM, 9, printk("u32FMLVCvalue: 0x%x u32FMRVCvalue: 0x%x\n",
960 s->pm.u32FMLVCvalue,s->pm.u32FMRVCvalue));
961 CS_DBGOUT(CS_PM, 9, printk("u32GPIORvalue: 0x%x u32JSCTLvalue: 0x%x\n",
962 s->pm.u32GPIORvalue,s->pm.u32JSCTLvalue));
963 CS_DBGOUT(CS_PM, 9, printk("u32SSCR: 0x%x u32SRCSA: 0x%x\n",
964 s->pm.u32SSCR,s->pm.u32SRCSA));
965 CS_DBGOUT(CS_PM, 9, printk("u32DacASR: 0x%x u32AdcASR: 0x%x\n",
966 s->pm.u32DacASR,s->pm.u32AdcASR));
967 CS_DBGOUT(CS_PM, 9, printk("u32DacSR: 0x%x u32AdcSR: 0x%x\n",
968 s->pm.u32DacSR,s->pm.u32AdcSR));
969 CS_DBGOUT(CS_PM, 9, printk("u32MIDCR_Save: 0x%x\n",
970 s->pm.u32MIDCR_Save));
971
972}
973static void printpipe(struct cs4281_pipeline *pl)
974{
975
976 CS_DBGOUT(CS_PM, 9, printk("pm struct:\n"));
977 CS_DBGOUT(CS_PM, 9, printk("flags:0x%x number: 0%x\n",
978 (unsigned)pl->flags,pl->number));
979 CS_DBGOUT(CS_PM, 9, printk("u32DBAnValue: 0%x u32DBCnValue: 0x%x\n",
980 pl->u32DBAnValue,pl->u32DBCnValue));
981 CS_DBGOUT(CS_PM, 9, printk("u32DMRnValue: 0x%x u32DCRnValue: 0x%x\n",
982 pl->u32DMRnValue,pl->u32DCRnValue));
983 CS_DBGOUT(CS_PM, 9, printk("u32DBAnAddress: 0x%x u32DBCnAddress: 0x%x\n",
984 pl->u32DBAnAddress,pl->u32DBCnAddress));
985 CS_DBGOUT(CS_PM, 9, printk("u32DCAnAddress: 0x%x u32DCCnAddress: 0x%x\n",
986 pl->u32DCCnAddress,pl->u32DCCnAddress));
987 CS_DBGOUT(CS_PM, 9, printk("u32DMRnAddress: 0x%x u32DCRnAddress: 0x%x\n",
988 pl->u32DMRnAddress,pl->u32DCRnAddress));
989 CS_DBGOUT(CS_PM, 9, printk("u32HDSRnAddress: 0x%x u32DBAn_Save: 0x%x\n",
990 pl->u32HDSRnAddress,pl->u32DBAn_Save));
991 CS_DBGOUT(CS_PM, 9, printk("u32DBCn_Save: 0x%x u32DMRn_Save: 0x%x\n",
992 pl->u32DBCn_Save,pl->u32DMRn_Save));
993 CS_DBGOUT(CS_PM, 9, printk("u32DCRn_Save: 0x%x u32DCCn_Save: 0x%x\n",
994 pl->u32DCRn_Save,pl->u32DCCn_Save));
995 CS_DBGOUT(CS_PM, 9, printk("u32DCAn_Save: 0x%x\n",
996 pl->u32DCAn_Save));
997 CS_DBGOUT(CS_PM, 9, printk("u32FCRn_Save: 0x%x u32FSICn_Save: 0x%x\n",
998 pl->u32FCRn_Save,pl->u32FSICn_Save));
999 CS_DBGOUT(CS_PM, 9, printk("u32FCRnValue: 0x%x u32FSICnValue: 0x%x\n",
1000 pl->u32FCRnValue,pl->u32FSICnValue));
1001 CS_DBGOUT(CS_PM, 9, printk("u32FCRnAddress: 0x%x u32FSICnAddress: 0x%x\n",
1002 pl->u32FCRnAddress,pl->u32FSICnAddress));
1003 CS_DBGOUT(CS_PM, 9, printk("u32FPDRnValue: 0x%x u32FPDRnAddress: 0x%x\n",
1004 pl->u32FPDRnValue,pl->u32FPDRnAddress));
1005}
1006static void printpipelines(struct cs4281_state *s)
1007{
1008 int i;
1009 for(i=0;i<CS4281_NUMBER_OF_PIPELINES;i++)
1010 {
1011 if(s->pl[i].flags & CS4281_PIPELINE_VALID)
1012 {
1013 printpipe(&s->pl[i]);
1014 }
1015 }
1016}
1017/****************************************************************************
1018*
1019* Suspend - save the ac97 regs, mute the outputs and power down the part.
1020*
1021****************************************************************************/
1022static void cs4281_ac97_suspend(struct cs4281_state *s)
1023{
1024 int Count,i;
1025
1026 CS_DBGOUT(CS_PM, 9, printk("cs4281: cs4281_ac97_suspend()+\n"));
1027/*
1028* change the state, save the current hwptr, then stop the dac/adc
1029*/
1030 s->pm.flags &= ~CS4281_PM_IDLE;
1031 s->pm.flags |= CS4281_PM_SUSPENDING;
1032 s->pm.u32hwptr_playback = readl(s->pBA0 + BA0_DCA0);
1033 s->pm.u32hwptr_capture = readl(s->pBA0 + BA0_DCA1);
1034 stop_dac(s);
1035 stop_adc(s);
1036
1037 for(Count = 0x2, i=0; (Count <= CS4281_AC97_HIGHESTREGTORESTORE)
1038 && (i < CS4281_AC97_NUMBER_RESTORE_REGS);
1039 Count += 2, i++)
1040 {
1041 cs4281_read_ac97(s, BA0_AC97_RESET + Count, &s->pm.ac97[i]);
1042 }
1043/*
1044* Save the ac97 volume registers as well as the current powerdown state.
1045* Now, mute the all the outputs (master, headphone, and mono), as well
1046* as the PCM volume, in preparation for powering down the entire part.
1047*/
1048 cs4281_read_ac97(s, BA0_AC97_MASTER_VOLUME, &s->pm.u32AC97_master_volume);
1049 cs4281_read_ac97(s, BA0_AC97_HEADPHONE_VOLUME, &s->pm.u32AC97_headphone_volume);
1050 cs4281_read_ac97(s, BA0_AC97_MASTER_VOLUME_MONO, &s->pm.u32AC97_master_volume_mono);
1051 cs4281_read_ac97(s, BA0_AC97_PCM_OUT_VOLUME, &s->pm.u32AC97_pcm_out_volume);
1052
1053 cs4281_write_ac97(s, BA0_AC97_MASTER_VOLUME, 0x8000);
1054 cs4281_write_ac97(s, BA0_AC97_HEADPHONE_VOLUME, 0x8000);
1055 cs4281_write_ac97(s, BA0_AC97_MASTER_VOLUME_MONO, 0x8000);
1056 cs4281_write_ac97(s, BA0_AC97_PCM_OUT_VOLUME, 0x8000);
1057
1058 cs4281_read_ac97(s, BA0_AC97_POWERDOWN, &s->pm.u32AC97_powerdown);
1059 cs4281_read_ac97(s, BA0_AC97_GENERAL_PURPOSE, &s->pm.u32AC97_general_purpose);
1060
1061/*
1062* And power down everything on the AC97 codec.
1063*/
1064 cs4281_write_ac97(s, BA0_AC97_POWERDOWN, 0xff00);
1065 CS_DBGOUT(CS_PM, 9, printk("cs4281: cs4281_ac97_suspend()-\n"));
1066}
1067
1068/****************************************************************************
1069*
1070* Resume - power up the part and restore its registers..
1071*
1072****************************************************************************/
1073static void cs4281_ac97_resume(struct cs4281_state *s)
1074{
1075 int Count,i;
1076
1077 CS_DBGOUT(CS_PM, 9, printk("cs4281: cs4281_ac97_resume()+\n"));
1078
1079/* do not save the power state registers at this time
1080 //
1081 // If we saved away the power control registers, write them into the
1082 // shadows so those saved values get restored instead of the current
1083 // shadowed value.
1084 //
1085 if( bPowerStateSaved )
1086 {
1087 PokeShadow( 0x26, ulSaveReg0x26 );
1088 bPowerStateSaved = FALSE;
1089 }
1090*/
1091
1092//
1093// First, we restore the state of the general purpose register. This
1094// contains the mic select (mic1 or mic2) and if we restore this after
1095// we restore the mic volume/boost state and mic2 was selected at
1096// suspend time, we will end up with a brief period of time where mic1
1097// is selected with the volume/boost settings for mic2, causing
1098// acoustic feedback. So we restore the general purpose register
1099// first, thereby getting the correct mic selected before we restore
1100// the mic volume/boost.
1101//
1102 cs4281_write_ac97(s, BA0_AC97_GENERAL_PURPOSE, s->pm.u32AC97_general_purpose);
1103
1104//
1105// Now, while the outputs are still muted, restore the state of power
1106// on the AC97 part.
1107//
1108 cs4281_write_ac97(s, BA0_AC97_POWERDOWN, s->pm.u32AC97_powerdown);
1109
1110/*
1111* Restore just the first set of registers, from register number
1112* 0x02 to the register number that ulHighestRegToRestore specifies.
1113*/
1114 for( Count = 0x2, i=0;
1115 (Count <= CS4281_AC97_HIGHESTREGTORESTORE)
1116 && (i < CS4281_AC97_NUMBER_RESTORE_REGS);
1117 Count += 2, i++)
1118 {
1119 cs4281_write_ac97(s, BA0_AC97_RESET + Count, s->pm.ac97[i]);
1120 }
1121 CS_DBGOUT(CS_PM, 9, printk("cs4281: cs4281_ac97_resume()-\n"));
1122}
1123
1124/* do not save the power state registers at this time
1125****************************************************************************
1126*
1127* SavePowerState - Save the power registers away.
1128*
1129****************************************************************************
1130void
1131HWAC97codec::SavePowerState(void)
1132{
1133 ENTRY(TM_OBJECTCALLS, "HWAC97codec::SavePowerState()\r\n");
1134
1135 ulSaveReg0x26 = PeekShadow(0x26);
1136
1137 //
1138 // Note that we have saved registers that need to be restored during a
1139 // resume instead of ulAC97Regs[].
1140 //
1141 bPowerStateSaved = TRUE;
1142
1143} // SavePowerState
1144*/
1145
1146static void cs4281_SuspendFIFO(struct cs4281_state *s, struct cs4281_pipeline *pl)
1147{
1148 /*
1149 * We need to save the contents of the BASIC FIFO Registers.
1150 */
1151 pl->u32FCRn_Save = readl(s->pBA0 + pl->u32FCRnAddress);
1152 pl->u32FSICn_Save = readl(s->pBA0 + pl->u32FSICnAddress);
1153}
1154static void cs4281_ResumeFIFO(struct cs4281_state *s, struct cs4281_pipeline *pl)
1155{
1156 /*
1157 * We need to restore the contents of the BASIC FIFO Registers.
1158 */
1159 writel(pl->u32FCRn_Save,s->pBA0 + pl->u32FCRnAddress);
1160 writel(pl->u32FSICn_Save,s->pBA0 + pl->u32FSICnAddress);
1161}
1162static void cs4281_SuspendDMAengine(struct cs4281_state *s, struct cs4281_pipeline *pl)
1163{
1164 //
1165 // We need to save the contents of the BASIC DMA Registers.
1166 //
1167 pl->u32DBAn_Save = readl(s->pBA0 + pl->u32DBAnAddress);
1168 pl->u32DBCn_Save = readl(s->pBA0 + pl->u32DBCnAddress);
1169 pl->u32DMRn_Save = readl(s->pBA0 + pl->u32DMRnAddress);
1170 pl->u32DCRn_Save = readl(s->pBA0 + pl->u32DCRnAddress);
1171 pl->u32DCCn_Save = readl(s->pBA0 + pl->u32DCCnAddress);
1172 pl->u32DCAn_Save = readl(s->pBA0 + pl->u32DCAnAddress);
1173}
1174static void cs4281_ResumeDMAengine(struct cs4281_state *s, struct cs4281_pipeline *pl)
1175{
1176 //
1177 // We need to save the contents of the BASIC DMA Registers.
1178 //
1179 writel( pl->u32DBAn_Save, s->pBA0 + pl->u32DBAnAddress);
1180 writel( pl->u32DBCn_Save, s->pBA0 + pl->u32DBCnAddress);
1181 writel( pl->u32DMRn_Save, s->pBA0 + pl->u32DMRnAddress);
1182 writel( pl->u32DCRn_Save, s->pBA0 + pl->u32DCRnAddress);
1183 writel( pl->u32DCCn_Save, s->pBA0 + pl->u32DCCnAddress);
1184 writel( pl->u32DCAn_Save, s->pBA0 + pl->u32DCAnAddress);
1185}
1186
1187static int cs4281_suspend(struct cs4281_state *s)
1188{
1189 int i;
1190 u32 u32CLKCR1;
1191 struct cs4281_pm *pm = &s->pm;
1192 CS_DBGOUT(CS_PM | CS_FUNCTION, 9,
1193 printk("cs4281: cs4281_suspend()+ flags=%d\n",
1194 (unsigned)s->pm.flags));
1195/*
1196* check the current state, only suspend if IDLE
1197*/
1198 if(!(s->pm.flags & CS4281_PM_IDLE))
1199 {
1200 CS_DBGOUT(CS_PM | CS_ERROR, 2,
1201 printk("cs4281: cs4281_suspend() unable to suspend, not IDLE\n"));
1202 return 1;
1203 }
1204 s->pm.flags &= ~CS4281_PM_IDLE;
1205 s->pm.flags |= CS4281_PM_SUSPENDING;
1206
1207//
1208// Gershwin CLKRUN - Set CKRA
1209//
1210 u32CLKCR1 = readl(s->pBA0 + BA0_CLKCR1);
1211
1212 pm->u32CLKCR1_SAVE = u32CLKCR1;
1213 if(!(u32CLKCR1 & 0x00010000 ) )
1214 writel(u32CLKCR1 | 0x00010000, s->pBA0 + BA0_CLKCR1);
1215
1216//
1217// First, turn on the clocks (yikes) to the devices, so that they will
1218// respond when we try to save their state.
1219//
1220 if(!(u32CLKCR1 & CLKCR1_SWCE))
1221 {
1222 writel(u32CLKCR1 | CLKCR1_SWCE , s->pBA0 + BA0_CLKCR1);
1223 }
1224
1225 //
1226 // Save the power state
1227 //
1228 pm->u32SSPMValue = readl(s->pBA0 + BA0_SSPM);
1229
1230 //
1231 // Disable interrupts.
1232 //
1233 writel(HICR_CHGM, s->pBA0 + BA0_HICR);
1234
1235 //
1236 // Save the PCM Playback Left and Right Volume Control.
1237 //
1238 pm->u32PPLVCvalue = readl(s->pBA0 + BA0_PPLVC);
1239 pm->u32PPRVCvalue = readl(s->pBA0 + BA0_PPRVC);
1240
1241 //
1242 // Save the FM Synthesis Left and Right Volume Control.
1243 //
1244 pm->u32FMLVCvalue = readl(s->pBA0 + BA0_FMLVC);
1245 pm->u32FMRVCvalue = readl(s->pBA0 + BA0_FMRVC);
1246
1247 //
1248 // Save the GPIOR value.
1249 //
1250 pm->u32GPIORvalue = readl(s->pBA0 + BA0_GPIOR);
1251
1252 //
1253 // Save the JSCTL value.
1254 //
1255 pm->u32JSCTLvalue = readl(s->pBA0 + BA0_GPIOR);
1256
1257 //
1258 // Save Sound System Control Register
1259 //
1260 pm->u32SSCR = readl(s->pBA0 + BA0_SSCR);
1261
1262 //
1263 // Save SRC Slot Assinment register
1264 //
1265 pm->u32SRCSA = readl(s->pBA0 + BA0_SRCSA);
1266
1267 //
1268 // Save sample rate
1269 //
1270 pm->u32DacASR = readl(s->pBA0 + BA0_PASR);
1271 pm->u32AdcASR = readl(s->pBA0 + BA0_CASR);
1272 pm->u32DacSR = readl(s->pBA0 + BA0_DACSR);
1273 pm->u32AdcSR = readl(s->pBA0 + BA0_ADCSR);
1274
1275 //
1276 // Loop through all of the PipeLines
1277 //
1278 for(i = 0; i < CS4281_NUMBER_OF_PIPELINES; i++)
1279 {
1280 if(s->pl[i].flags & CS4281_PIPELINE_VALID)
1281 {
1282 //
1283 // Ask the DMAengines and FIFOs to Suspend.
1284 //
1285 cs4281_SuspendDMAengine(s,&s->pl[i]);
1286 cs4281_SuspendFIFO(s,&s->pl[i]);
1287 }
1288 }
1289 //
1290 // We need to save the contents of the Midi Control Register.
1291 //
1292 pm->u32MIDCR_Save = readl(s->pBA0 + BA0_MIDCR);
1293/*
1294* save off the AC97 part information
1295*/
1296 cs4281_ac97_suspend(s);
1297
1298 //
1299 // Turn off the serial ports.
1300 //
1301 writel(0, s->pBA0 + BA0_SERMC);
1302
1303 //
1304 // Power off FM, Joystick, AC link,
1305 //
1306 writel(0, s->pBA0 + BA0_SSPM);
1307
1308 //
1309 // DLL off.
1310 //
1311 writel(0, s->pBA0 + BA0_CLKCR1);
1312
1313 //
1314 // AC link off.
1315 //
1316 writel(0, s->pBA0 + BA0_SPMC);
1317
1318 //
1319 // Put the chip into D3(hot) state.
1320 //
1321 // PokeBA0(BA0_PMCS, 0x00000003);
1322
1323 //
1324 // Gershwin CLKRUN - Clear CKRA
1325 //
1326 u32CLKCR1 = readl(s->pBA0 + BA0_CLKCR1);
1327 writel(u32CLKCR1 & 0xFFFEFFFF, s->pBA0 + BA0_CLKCR1);
1328
1329#ifdef CSDEBUG
1330 printpm(s);
1331 printpipelines(s);
1332#endif
1333
1334 s->pm.flags &= ~CS4281_PM_SUSPENDING;
1335 s->pm.flags |= CS4281_PM_SUSPENDED;
1336
1337 CS_DBGOUT(CS_PM | CS_FUNCTION, 9,
1338 printk("cs4281: cs4281_suspend()- flags=%d\n",
1339 (unsigned)s->pm.flags));
1340 return 0;
1341}
1342
1343static int cs4281_resume(struct cs4281_state *s)
1344{
1345 int i;
1346 unsigned temp1;
1347 u32 u32CLKCR1;
1348 struct cs4281_pm *pm = &s->pm;
1349 CS_DBGOUT(CS_PM | CS_FUNCTION, 4,
1350 printk( "cs4281: cs4281_resume()+ flags=%d\n",
1351 (unsigned)s->pm.flags));
1352 if(!(s->pm.flags & CS4281_PM_SUSPENDED))
1353 {
1354 CS_DBGOUT(CS_PM | CS_ERROR, 2,
1355 printk("cs4281: cs4281_resume() unable to resume, not SUSPENDED\n"));
1356 return 1;
1357 }
1358 s->pm.flags &= ~CS4281_PM_SUSPENDED;
1359 s->pm.flags |= CS4281_PM_RESUMING;
1360
1361//
1362// Gershwin CLKRUN - Set CKRA
1363//
1364 u32CLKCR1 = readl(s->pBA0 + BA0_CLKCR1);
1365 writel(u32CLKCR1 | 0x00010000, s->pBA0 + BA0_CLKCR1);
1366
1367 //
1368 // set the power state.
1369 //
1370 //old PokeBA0(BA0_PMCS, 0);
1371
1372 //
1373 // Program the clock circuit and serial ports.
1374 //
1375 temp1 = cs4281_hw_init(s);
1376 if (temp1) {
1377 CS_DBGOUT(CS_ERROR | CS_INIT, 1,
1378 printk(KERN_ERR
1379 "cs4281: resume cs4281_hw_init() error.\n"));
1380 return -1;
1381 }
1382
1383 //
1384 // restore the Power state
1385 //
1386 writel(pm->u32SSPMValue, s->pBA0 + BA0_SSPM);
1387
1388 //
1389 // Set post SRC mix setting (FM or ALT48K)
1390 //
1391 writel(pm->u32SSPM_BITS, s->pBA0 + BA0_SSPM);
1392
1393 //
1394 // Loop through all of the PipeLines
1395 //
1396 for(i = 0; i < CS4281_NUMBER_OF_PIPELINES; i++)
1397 {
1398 if(s->pl[i].flags & CS4281_PIPELINE_VALID)
1399 {
1400 //
1401 // Ask the DMAengines and FIFOs to Resume.
1402 //
1403 cs4281_ResumeDMAengine(s,&s->pl[i]);
1404 cs4281_ResumeFIFO(s,&s->pl[i]);
1405 }
1406 }
1407 //
1408 // We need to restore the contents of the Midi Control Register.
1409 //
1410 writel(pm->u32MIDCR_Save, s->pBA0 + BA0_MIDCR);
1411
1412 cs4281_ac97_resume(s);
1413 //
1414 // Restore the PCM Playback Left and Right Volume Control.
1415 //
1416 writel(pm->u32PPLVCvalue, s->pBA0 + BA0_PPLVC);
1417 writel(pm->u32PPRVCvalue, s->pBA0 + BA0_PPRVC);
1418
1419 //
1420 // Restore the FM Synthesis Left and Right Volume Control.
1421 //
1422 writel(pm->u32FMLVCvalue, s->pBA0 + BA0_FMLVC);
1423 writel(pm->u32FMRVCvalue, s->pBA0 + BA0_FMRVC);
1424
1425 //
1426 // Restore the JSCTL value.
1427 //
1428 writel(pm->u32JSCTLvalue, s->pBA0 + BA0_JSCTL);
1429
1430 //
1431 // Restore the GPIOR register value.
1432 //
1433 writel(pm->u32GPIORvalue, s->pBA0 + BA0_GPIOR);
1434
1435 //
1436 // Restore Sound System Control Register
1437 //
1438 writel(pm->u32SSCR, s->pBA0 + BA0_SSCR);
1439
1440 //
1441 // Restore SRC Slot Assignment register
1442 //
1443 writel(pm->u32SRCSA, s->pBA0 + BA0_SRCSA);
1444
1445 //
1446 // Restore sample rate
1447 //
1448 writel(pm->u32DacASR, s->pBA0 + BA0_PASR);
1449 writel(pm->u32AdcASR, s->pBA0 + BA0_CASR);
1450 writel(pm->u32DacSR, s->pBA0 + BA0_DACSR);
1451 writel(pm->u32AdcSR, s->pBA0 + BA0_ADCSR);
1452
1453 //
1454 // Restore CFL1/2 registers we saved to compensate for OEM bugs.
1455 //
1456 // PokeBA0(BA0_CFLR, ulConfig);
1457
1458 //
1459 // Gershwin CLKRUN - Clear CKRA
1460 //
1461 writel(pm->u32CLKCR1_SAVE, s->pBA0 + BA0_CLKCR1);
1462
1463 //
1464 // Enable interrupts on the part.
1465 //
1466 writel(HICR_IEV | HICR_CHGM, s->pBA0 + BA0_HICR);
1467
1468#ifdef CSDEBUG
1469 printpm(s);
1470 printpipelines(s);
1471#endif
1472/*
1473* change the state, restore the current hwptrs, then stop the dac/adc
1474*/
1475 s->pm.flags |= CS4281_PM_IDLE;
1476 s->pm.flags &= ~(CS4281_PM_SUSPENDING | CS4281_PM_SUSPENDED
1477 | CS4281_PM_RESUMING | CS4281_PM_RESUMED);
1478
1479 writel(s->pm.u32hwptr_playback, s->pBA0 + BA0_DCA0);
1480 writel(s->pm.u32hwptr_capture, s->pBA0 + BA0_DCA1);
1481 start_dac(s);
1482 start_adc(s);
1483
1484 CS_DBGOUT(CS_PM | CS_FUNCTION, 9, printk("cs4281: cs4281_resume()- flags=%d\n",
1485 (unsigned)s->pm.flags));
1486 return 0;
1487}
1488
1489#endif
1490
1491//******************************************************************************
1492// "cs4281_play_rate()" --
1493//******************************************************************************
1494static void cs4281_play_rate(struct cs4281_state *card, u32 playrate)
1495{
1496 u32 DACSRvalue = 1;
1497
1498 // Based on the sample rate, program the DACSR register.
1499 if (playrate == 8000)
1500 DACSRvalue = 5;
1501 if (playrate == 11025)
1502 DACSRvalue = 4;
1503 else if (playrate == 22050)
1504 DACSRvalue = 2;
1505 else if (playrate == 44100)
1506 DACSRvalue = 1;
1507 else if ((playrate <= 48000) && (playrate >= 6023))
1508 DACSRvalue = 24576000 / (playrate * 16);
1509 else if (playrate < 6023)
1510 // Not allowed by open.
1511 return;
1512 else if (playrate > 48000)
1513 // Not allowed by open.
1514 return;
1515 CS_DBGOUT(CS_WAVE_WRITE | CS_PARMS, 2, printk(KERN_INFO
1516 "cs4281: cs4281_play_rate(): DACSRvalue=0x%.8x playrate=%d\n",
1517 DACSRvalue, playrate));
1518 // Write the 'sample rate select code'
1519 // to the 'DAC Sample Rate' register.
1520 writel(DACSRvalue, card->pBA0 + BA0_DACSR); // (744h)
1521}
1522
1523//******************************************************************************
1524// "cs4281_record_rate()" -- Initialize the record sample rate converter.
1525//******************************************************************************
1526static void cs4281_record_rate(struct cs4281_state *card, u32 outrate)
1527{
1528 u32 ADCSRvalue = 1;
1529
1530 //
1531 // Based on the sample rate, program the ADCSR register
1532 //
1533 if (outrate == 8000)
1534 ADCSRvalue = 5;
1535 if (outrate == 11025)
1536 ADCSRvalue = 4;
1537 else if (outrate == 22050)
1538 ADCSRvalue = 2;
1539 else if (outrate == 44100)
1540 ADCSRvalue = 1;
1541 else if ((outrate <= 48000) && (outrate >= 6023))
1542 ADCSRvalue = 24576000 / (outrate * 16);
1543 else if (outrate < 6023) {
1544 // Not allowed by open.
1545 return;
1546 } else if (outrate > 48000) {
1547 // Not allowed by open.
1548 return;
1549 }
1550 CS_DBGOUT(CS_WAVE_READ | CS_PARMS, 2, printk(KERN_INFO
1551 "cs4281: cs4281_record_rate(): ADCSRvalue=0x%.8x outrate=%d\n",
1552 ADCSRvalue, outrate));
1553 // Write the 'sample rate select code
1554 // to the 'ADC Sample Rate' register.
1555 writel(ADCSRvalue, card->pBA0 + BA0_ADCSR); // (748h)
1556}
1557
1558
1559
1560static void stop_dac(struct cs4281_state *s)
1561{
1562 unsigned long flags;
1563 unsigned temp1;
1564
1565 CS_DBGOUT(CS_WAVE_WRITE, 3, printk(KERN_INFO "cs4281: stop_dac():\n"));
1566 spin_lock_irqsave(&s->lock, flags);
1567 s->ena &= ~FMODE_WRITE;
1568 temp1 = readl(s->pBA0 + BA0_DCR0) | DCRn_MSK;
1569 writel(temp1, s->pBA0 + BA0_DCR0);
1570
1571 spin_unlock_irqrestore(&s->lock, flags);
1572}
1573
1574
1575static void start_dac(struct cs4281_state *s)
1576{
1577 unsigned long flags;
1578 unsigned temp1;
1579
1580 CS_DBGOUT(CS_FUNCTION, 3, printk(KERN_INFO "cs4281: start_dac()+\n"));
1581 spin_lock_irqsave(&s->lock, flags);
1582 if (!(s->ena & FMODE_WRITE) && (s->dma_dac.mapped ||
1583 (s->dma_dac.count > 0
1584 && s->dma_dac.ready))
1585#ifndef NOT_CS4281_PM
1586 && (s->pm.flags & CS4281_PM_IDLE))
1587#else
1588)
1589#endif
1590 {
1591 s->ena |= FMODE_WRITE;
1592 temp1 = readl(s->pBA0 + BA0_DCR0) & ~DCRn_MSK; // Clear DMA0 channel mask.
1593 writel(temp1, s->pBA0 + BA0_DCR0); // Start DMA'ing.
1594 writel(HICR_IEV | HICR_CHGM, s->pBA0 + BA0_HICR); // Enable interrupts.
1595
1596 writel(7, s->pBA0 + BA0_PPRVC);
1597 writel(7, s->pBA0 + BA0_PPLVC);
1598 CS_DBGOUT(CS_WAVE_WRITE | CS_PARMS, 8, printk(KERN_INFO
1599 "cs4281: start_dac(): writel 0x%x start dma\n", temp1));
1600
1601 }
1602 spin_unlock_irqrestore(&s->lock, flags);
1603 CS_DBGOUT(CS_FUNCTION, 3,
1604 printk(KERN_INFO "cs4281: start_dac()-\n"));
1605}
1606
1607
1608static void stop_adc(struct cs4281_state *s)
1609{
1610 unsigned long flags;
1611 unsigned temp1;
1612
1613 CS_DBGOUT(CS_FUNCTION, 3,
1614 printk(KERN_INFO "cs4281: stop_adc()+\n"));
1615
1616 spin_lock_irqsave(&s->lock, flags);
1617 s->ena &= ~FMODE_READ;
1618
1619 if (s->conversion == 1) {
1620 s->conversion = 0;
1621 s->prop_adc.fmt = s->prop_adc.fmt_original;
1622 }
1623 temp1 = readl(s->pBA0 + BA0_DCR1) | DCRn_MSK;
1624 writel(temp1, s->pBA0 + BA0_DCR1);
1625 spin_unlock_irqrestore(&s->lock, flags);
1626 CS_DBGOUT(CS_FUNCTION, 3,
1627 printk(KERN_INFO "cs4281: stop_adc()-\n"));
1628}
1629
1630
1631static void start_adc(struct cs4281_state *s)
1632{
1633 unsigned long flags;
1634 unsigned temp1;
1635
1636 CS_DBGOUT(CS_FUNCTION, 2,
1637 printk(KERN_INFO "cs4281: start_adc()+\n"));
1638
1639 if (!(s->ena & FMODE_READ) &&
1640 (s->dma_adc.mapped || s->dma_adc.count <=
1641 (signed) (s->dma_adc.dmasize - 2 * s->dma_adc.fragsize))
1642 && s->dma_adc.ready
1643#ifndef NOT_CS4281_PM
1644 && (s->pm.flags & CS4281_PM_IDLE))
1645#else
1646)
1647#endif
1648 {
1649 if (s->prop_adc.fmt & AFMT_S8 || s->prop_adc.fmt & AFMT_U8) {
1650 //
1651 // now only use 16 bit capture, due to truncation issue
1652 // in the chip, noticable distortion occurs.
1653 // allocate buffer and then convert from 16 bit to
1654 // 8 bit for the user buffer.
1655 //
1656 s->prop_adc.fmt_original = s->prop_adc.fmt;
1657 if (s->prop_adc.fmt & AFMT_S8) {
1658 s->prop_adc.fmt &= ~AFMT_S8;
1659 s->prop_adc.fmt |= AFMT_S16_LE;
1660 }
1661 if (s->prop_adc.fmt & AFMT_U8) {
1662 s->prop_adc.fmt &= ~AFMT_U8;
1663 s->prop_adc.fmt |= AFMT_U16_LE;
1664 }
1665 //
1666 // prog_dmabuf_adc performs a stop_adc() but that is
1667 // ok since we really haven't started the DMA yet.
1668 //
1669 prog_codec(s, CS_TYPE_ADC);
1670
1671 if (prog_dmabuf_adc(s) != 0) {
1672 CS_DBGOUT(CS_ERROR, 2, printk(KERN_INFO
1673 "cs4281: start_adc(): error in prog_dmabuf_adc\n"));
1674 }
1675 s->conversion = 1;
1676 }
1677 spin_lock_irqsave(&s->lock, flags);
1678 s->ena |= FMODE_READ;
1679 temp1 = readl(s->pBA0 + BA0_DCR1) & ~DCRn_MSK; // Clear DMA1 channel mask bit.
1680 writel(temp1, s->pBA0 + BA0_DCR1); // Start recording
1681 writel(HICR_IEV | HICR_CHGM, s->pBA0 + BA0_HICR); // Enable interrupts.
1682 spin_unlock_irqrestore(&s->lock, flags);
1683
1684 CS_DBGOUT(CS_PARMS, 6, printk(KERN_INFO
1685 "cs4281: start_adc(): writel 0x%x \n", temp1));
1686 }
1687 CS_DBGOUT(CS_FUNCTION, 2,
1688 printk(KERN_INFO "cs4281: start_adc()-\n"));
1689
1690}
1691
1692
1693// ---------------------------------------------------------------------
1694
1695#define DMABUF_MINORDER 1 // ==> min buffer size = 8K.
1696
1697
1698static void dealloc_dmabuf(struct cs4281_state *s, struct dmabuf *db)
1699{
1700 struct page *map, *mapend;
1701
1702 if (db->rawbuf) {
1703 // Undo prog_dmabuf()'s marking the pages as reserved
1704 mapend =
1705 virt_to_page(db->rawbuf + (PAGE_SIZE << db->buforder) -
1706 1);
1707 for (map = virt_to_page(db->rawbuf); map <= mapend; map++)
1708 ClearPageReserved(map);
1709 free_dmabuf(s, db);
1710 }
1711 if (s->tmpbuff && (db->type == CS_TYPE_ADC)) {
1712 // Undo prog_dmabuf()'s marking the pages as reserved
1713 mapend =
1714 virt_to_page(s->tmpbuff +
1715 (PAGE_SIZE << s->buforder_tmpbuff) - 1);
1716 for (map = virt_to_page(s->tmpbuff); map <= mapend; map++)
1717 ClearPageReserved(map);
1718 free_dmabuf2(s, db);
1719 }
1720 s->tmpbuff = NULL;
1721 db->rawbuf = NULL;
1722 db->mapped = db->ready = 0;
1723}
1724
1725static int prog_dmabuf(struct cs4281_state *s, struct dmabuf *db)
1726{
1727 int order;
1728 unsigned bytespersec, temp1;
1729 unsigned bufs, sample_shift = 0;
1730 struct page *map, *mapend;
1731 unsigned long df;
1732
1733 CS_DBGOUT(CS_FUNCTION, 2,
1734 printk(KERN_INFO "cs4281: prog_dmabuf()+\n"));
1735 db->hwptr = db->swptr = db->total_bytes = db->count = db->error =
1736 db->endcleared = db->blocks = db->wakeup = db->underrun = 0;
1737/*
1738* check for order within limits, but do not overwrite value, check
1739* later for a fractional defaultorder (i.e. 100+).
1740*/
1741 if((defaultorder > 0) && (defaultorder < 12))
1742 df = defaultorder;
1743 else
1744 df = 1;
1745
1746 if (!db->rawbuf) {
1747 db->ready = db->mapped = 0;
1748 for (order = df; order >= DMABUF_MINORDER; order--)
1749 if ( (db->rawbuf = (void *) pci_alloc_consistent(
1750 s->pcidev, PAGE_SIZE << order, &db-> dmaaddr)))
1751 break;
1752 if (!db->rawbuf) {
1753 CS_DBGOUT(CS_ERROR, 1, printk(KERN_ERR
1754 "cs4281: prog_dmabuf(): unable to allocate rawbuf\n"));
1755 return -ENOMEM;
1756 }
1757 db->buforder = order;
1758 // Now mark the pages as reserved; otherwise the
1759 // remap_pfn_range() in cs4281_mmap doesn't work.
1760 // 1. get index to last page in mem_map array for rawbuf.
1761 mapend = virt_to_page(db->rawbuf +
1762 (PAGE_SIZE << db->buforder) - 1);
1763
1764 // 2. mark each physical page in range as 'reserved'.
1765 for (map = virt_to_page(db->rawbuf); map <= mapend; map++)
1766 SetPageReserved(map);
1767 }
1768 if (!s->tmpbuff && (db->type == CS_TYPE_ADC)) {
1769 for (order = df; order >= DMABUF_MINORDER;
1770 order--)
1771 if ( (s->tmpbuff = (void *) pci_alloc_consistent(
1772 s->pcidev, PAGE_SIZE << order,
1773 &s->dmaaddr_tmpbuff)))
1774 break;
1775 if (!s->tmpbuff) {
1776 CS_DBGOUT(CS_ERROR, 1, printk(KERN_ERR
1777 "cs4281: prog_dmabuf(): unable to allocate tmpbuff\n"));
1778 return -ENOMEM;
1779 }
1780 s->buforder_tmpbuff = order;
1781 // Now mark the pages as reserved; otherwise the
1782 // remap_pfn_range() in cs4281_mmap doesn't work.
1783 // 1. get index to last page in mem_map array for rawbuf.
1784 mapend = virt_to_page(s->tmpbuff +
1785 (PAGE_SIZE << s->buforder_tmpbuff) - 1);
1786
1787 // 2. mark each physical page in range as 'reserved'.
1788 for (map = virt_to_page(s->tmpbuff); map <= mapend; map++)
1789 SetPageReserved(map);
1790 }
1791 if (db->type == CS_TYPE_DAC) {
1792 if (s->prop_dac.fmt & (AFMT_S16_LE | AFMT_U16_LE))
1793 sample_shift++;
1794 if (s->prop_dac.channels > 1)
1795 sample_shift++;
1796 bytespersec = s->prop_dac.rate << sample_shift;
1797 } else // CS_TYPE_ADC
1798 {
1799 if (s->prop_adc.fmt & (AFMT_S16_LE | AFMT_U16_LE))
1800 sample_shift++;
1801 if (s->prop_adc.channels > 1)
1802 sample_shift++;
1803 bytespersec = s->prop_adc.rate << sample_shift;
1804 }
1805 bufs = PAGE_SIZE << db->buforder;
1806
1807/*
1808* added fractional "defaultorder" inputs. if >100 then use
1809* defaultorder-100 as power of 2 for the buffer size. example:
1810* 106 = 2^(106-100) = 2^6 = 64 bytes for the buffer size.
1811*/
1812 if(defaultorder >= 100)
1813 {
1814 bufs = 1 << (defaultorder-100);
1815 }
1816
1817#define INTERRUPT_RATE_MS 100 // Interrupt rate in milliseconds.
1818 db->numfrag = 2;
1819/*
1820* Nominal frag size(bytes/interrupt)
1821*/
1822 temp1 = bytespersec / (1000 / INTERRUPT_RATE_MS);
1823 db->fragshift = 8; // Min 256 bytes.
1824 while (1 << db->fragshift < temp1) // Calc power of 2 frag size.
1825 db->fragshift += 1;
1826 db->fragsize = 1 << db->fragshift;
1827 db->dmasize = db->fragsize * 2;
1828 db->fragsamples = db->fragsize >> sample_shift; // # samples/fragment.
1829
1830// If the calculated size is larger than the allocated
1831// buffer, divide the allocated buffer into 2 fragments.
1832 if (db->dmasize > bufs) {
1833
1834 db->numfrag = 2; // Two fragments.
1835 db->fragsize = bufs >> 1; // Each 1/2 the alloc'ed buffer.
1836 db->fragsamples = db->fragsize >> sample_shift; // # samples/fragment.
1837 db->dmasize = bufs; // Use all the alloc'ed buffer.
1838
1839 db->fragshift = 0; // Calculate 'fragshift'.
1840 temp1 = db->fragsize; // update_ptr() uses it
1841 while ((temp1 >>= 1) > 1) // to calc 'total-bytes'
1842 db->fragshift += 1; // returned in DSP_GETI/OPTR.
1843 }
1844 CS_DBGOUT(CS_PARMS, 3, printk(KERN_INFO
1845 "cs4281: prog_dmabuf(): numfrag=%d fragsize=%d fragsamples=%d fragshift=%d bufs=%d fmt=0x%x ch=%d\n",
1846 db->numfrag, db->fragsize, db->fragsamples,
1847 db->fragshift, bufs,
1848 (db->type == CS_TYPE_DAC) ? s->prop_dac.fmt :
1849 s->prop_adc.fmt,
1850 (db->type == CS_TYPE_DAC) ? s->prop_dac.channels :
1851 s->prop_adc.channels));
1852 CS_DBGOUT(CS_FUNCTION, 2,
1853 printk(KERN_INFO "cs4281: prog_dmabuf()-\n"));
1854 return 0;
1855}
1856
1857
1858static int prog_dmabuf_adc(struct cs4281_state *s)
1859{
1860 unsigned long va;
1861 unsigned count;
1862 int c;
1863 stop_adc(s);
1864 s->dma_adc.type = CS_TYPE_ADC;
1865 if ((c = prog_dmabuf(s, &s->dma_adc)))
1866 return c;
1867
1868 if (s->dma_adc.rawbuf) {
1869 memset(s->dma_adc.rawbuf,
1870 (s->prop_adc.
1871 fmt & (AFMT_U8 | AFMT_U16_LE)) ? 0x80 : 0,
1872 s->dma_adc.dmasize);
1873 }
1874 if (s->tmpbuff) {
1875 memset(s->tmpbuff,
1876 (s->prop_adc.
1877 fmt & (AFMT_U8 | AFMT_U16_LE)) ? 0x80 : 0,
1878 PAGE_SIZE << s->buforder_tmpbuff);
1879 }
1880
1881 va = virt_to_bus(s->dma_adc.rawbuf);
1882
1883 count = s->dma_adc.dmasize;
1884
1885 if (s->prop_adc.
1886 fmt & (AFMT_S16_LE | AFMT_U16_LE | AFMT_S16_BE | AFMT_U16_BE))
1887 count /= 2; // 16-bit.
1888
1889 if (s->prop_adc.channels > 1)
1890 count /= 2; // Assume stereo.
1891
1892 CS_DBGOUT(CS_WAVE_READ, 3, printk(KERN_INFO
1893 "cs4281: prog_dmabuf_adc(): count=%d va=0x%.8x\n",
1894 count, (unsigned) va));
1895
1896 writel(va, s->pBA0 + BA0_DBA1); // Set buffer start address.
1897 writel(count - 1, s->pBA0 + BA0_DBC1); // Set count.
1898 s->dma_adc.ready = 1;
1899 return 0;
1900}
1901
1902
1903static int prog_dmabuf_dac(struct cs4281_state *s)
1904{
1905 unsigned long va;
1906 unsigned count;
1907 int c;
1908 stop_dac(s);
1909 s->dma_dac.type = CS_TYPE_DAC;
1910 if ((c = prog_dmabuf(s, &s->dma_dac)))
1911 return c;
1912 memset(s->dma_dac.rawbuf,
1913 (s->prop_dac.fmt & (AFMT_U8 | AFMT_U16_LE)) ? 0x80 : 0,
1914 s->dma_dac.dmasize);
1915
1916 va = virt_to_bus(s->dma_dac.rawbuf);
1917
1918 count = s->dma_dac.dmasize;
1919 if (s->prop_dac.
1920 fmt & (AFMT_S16_LE | AFMT_U16_LE | AFMT_S16_BE | AFMT_U16_BE))
1921 count /= 2; // 16-bit.
1922
1923 if (s->prop_dac.channels > 1)
1924 count /= 2; // Assume stereo.
1925
1926 writel(va, s->pBA0 + BA0_DBA0); // Set buffer start address.
1927 writel(count - 1, s->pBA0 + BA0_DBC0); // Set count.
1928
1929 CS_DBGOUT(CS_WAVE_WRITE, 3, printk(KERN_INFO
1930 "cs4281: prog_dmabuf_dac(): count=%d va=0x%.8x\n",
1931 count, (unsigned) va));
1932
1933 s->dma_dac.ready = 1;
1934 return 0;
1935}
1936
1937
1938static void clear_advance(void *buf, unsigned bsize, unsigned bptr,
1939 unsigned len, unsigned char c)
1940{
1941 if (bptr + len > bsize) {
1942 unsigned x = bsize - bptr;
1943 memset(((char *) buf) + bptr, c, x);
1944 bptr = 0;
1945 len -= x;
1946 }
1947 CS_DBGOUT(CS_WAVE_WRITE, 4, printk(KERN_INFO
1948 "cs4281: clear_advance(): memset %d at %p for %d size \n",
1949 (unsigned)c, ((char *) buf) + bptr, len));
1950 memset(((char *) buf) + bptr, c, len);
1951}
1952
1953
1954
1955// call with spinlock held!
1956static void cs4281_update_ptr(struct cs4281_state *s, int intflag)
1957{
1958 int diff;
1959 unsigned hwptr, va;
1960
1961 // update ADC pointer
1962 if (s->ena & FMODE_READ) {
1963 hwptr = readl(s->pBA0 + BA0_DCA1); // Read capture DMA address.
1964 va = virt_to_bus(s->dma_adc.rawbuf);
1965 hwptr -= (unsigned) va;
1966 diff =
1967 (s->dma_adc.dmasize + hwptr -
1968 s->dma_adc.hwptr) % s->dma_adc.dmasize;
1969 s->dma_adc.hwptr = hwptr;
1970 s->dma_adc.total_bytes += diff;
1971 s->dma_adc.count += diff;
1972 if (s->dma_adc.count > s->dma_adc.dmasize)
1973 s->dma_adc.count = s->dma_adc.dmasize;
1974 if (s->dma_adc.mapped) {
1975 if (s->dma_adc.count >=
1976 (signed) s->dma_adc.fragsize) wake_up(&s->
1977 dma_adc.
1978 wait);
1979 } else {
1980 if (s->dma_adc.count > 0)
1981 wake_up(&s->dma_adc.wait);
1982 }
1983 CS_DBGOUT(CS_PARMS, 8, printk(KERN_INFO
1984 "cs4281: cs4281_update_ptr(): s=%p hwptr=%d total_bytes=%d count=%d \n",
1985 s, s->dma_adc.hwptr, s->dma_adc.total_bytes, s->dma_adc.count));
1986 }
1987 // update DAC pointer
1988 //
1989 // check for end of buffer, means that we are going to wait for another interrupt
1990 // to allow silence to fill the fifos on the part, to keep pops down to a minimum.
1991 //
1992 if (s->ena & FMODE_WRITE) {
1993 hwptr = readl(s->pBA0 + BA0_DCA0); // Read play DMA address.
1994 va = virt_to_bus(s->dma_dac.rawbuf);
1995 hwptr -= (unsigned) va;
1996 diff = (s->dma_dac.dmasize + hwptr -
1997 s->dma_dac.hwptr) % s->dma_dac.dmasize;
1998 s->dma_dac.hwptr = hwptr;
1999 s->dma_dac.total_bytes += diff;
2000 if (s->dma_dac.mapped) {
2001 s->dma_dac.count += diff;
2002 if (s->dma_dac.count >= s->dma_dac.fragsize) {
2003 s->dma_dac.wakeup = 1;
2004 wake_up(&s->dma_dac.wait);
2005 if (s->dma_dac.count > s->dma_dac.dmasize)
2006 s->dma_dac.count &=
2007 s->dma_dac.dmasize - 1;
2008 }
2009 } else {
2010 s->dma_dac.count -= diff;
2011 if (s->dma_dac.count <= 0) {
2012 //
2013 // fill with silence, and do not shut down the DAC.
2014 // Continue to play silence until the _release.
2015 //
2016 CS_DBGOUT(CS_WAVE_WRITE, 6, printk(KERN_INFO
2017 "cs4281: cs4281_update_ptr(): memset %d at %p for %d size \n",
2018 (unsigned)(s->prop_dac.fmt &
2019 (AFMT_U8 | AFMT_U16_LE)) ? 0x80 : 0,
2020 s->dma_dac.rawbuf, s->dma_dac.dmasize));
2021 memset(s->dma_dac.rawbuf,
2022 (s->prop_dac.
2023 fmt & (AFMT_U8 | AFMT_U16_LE)) ?
2024 0x80 : 0, s->dma_dac.dmasize);
2025 if (s->dma_dac.count < 0) {
2026 s->dma_dac.underrun = 1;
2027 s->dma_dac.count = 0;
2028 CS_DBGOUT(CS_ERROR, 9, printk(KERN_INFO
2029 "cs4281: cs4281_update_ptr(): underrun\n"));
2030 }
2031 } else if (s->dma_dac.count <=
2032 (signed) s->dma_dac.fragsize
2033 && !s->dma_dac.endcleared) {
2034 clear_advance(s->dma_dac.rawbuf,
2035 s->dma_dac.dmasize,
2036 s->dma_dac.swptr,
2037 s->dma_dac.fragsize,
2038 (s->prop_dac.
2039 fmt & (AFMT_U8 |
2040 AFMT_U16_LE)) ? 0x80
2041 : 0);
2042 s->dma_dac.endcleared = 1;
2043 }
2044 if ( (s->dma_dac.count <= (signed) s->dma_dac.dmasize/2) ||
2045 intflag)
2046 {
2047 wake_up(&s->dma_dac.wait);
2048 }
2049 }
2050 CS_DBGOUT(CS_PARMS, 8, printk(KERN_INFO
2051 "cs4281: cs4281_update_ptr(): s=%p hwptr=%d total_bytes=%d count=%d \n",
2052 s, s->dma_dac.hwptr, s->dma_dac.total_bytes, s->dma_dac.count));
2053 }
2054}
2055
2056
2057// ---------------------------------------------------------------------
2058
2059static void prog_codec(struct cs4281_state *s, unsigned type)
2060{
2061 unsigned long flags;
2062 unsigned temp1, format;
2063
2064 CS_DBGOUT(CS_FUNCTION, 2,
2065 printk(KERN_INFO "cs4281: prog_codec()+ \n"));
2066
2067 spin_lock_irqsave(&s->lock, flags);
2068 if (type == CS_TYPE_ADC) {
2069 temp1 = readl(s->pBA0 + BA0_DCR1);
2070 writel(temp1 | DCRn_MSK, s->pBA0 + BA0_DCR1); // Stop capture DMA, if active.
2071
2072 // program sampling rates
2073 // Note, for CS4281, capture & play rates can be set independently.
2074 cs4281_record_rate(s, s->prop_adc.rate);
2075
2076 // program ADC parameters
2077 format = DMRn_DMA | DMRn_AUTO | DMRn_TR_WRITE;
2078 if (s->prop_adc.
2079 fmt & (AFMT_S16_LE | AFMT_U16_LE | AFMT_S16_BE | AFMT_U16_BE)) { // 16-bit
2080 if (s->prop_adc.fmt & (AFMT_S16_BE | AFMT_U16_BE)) // Big-endian?
2081 format |= DMRn_BEND;
2082 if (s->prop_adc.fmt & (AFMT_U16_LE | AFMT_U16_BE))
2083 format |= DMRn_USIGN; // Unsigned.
2084 } else
2085 format |= DMRn_SIZE8 | DMRn_USIGN; // 8-bit, unsigned
2086 if (s->prop_adc.channels < 2)
2087 format |= DMRn_MONO;
2088
2089 writel(format, s->pBA0 + BA0_DMR1);
2090
2091 CS_DBGOUT(CS_PARMS, 2, printk(KERN_INFO
2092 "cs4281: prog_codec(): adc %s %s %s rate=%d DMR0 format=0x%.8x\n",
2093 (format & DMRn_SIZE8) ? "8" : "16",
2094 (format & DMRn_USIGN) ? "Unsigned" : "Signed",
2095 (format & DMRn_MONO) ? "Mono" : "Stereo",
2096 s->prop_adc.rate, format));
2097
2098 s->ena &= ~FMODE_READ; // not capturing data yet
2099 }
2100
2101
2102 if (type == CS_TYPE_DAC) {
2103 temp1 = readl(s->pBA0 + BA0_DCR0);
2104 writel(temp1 | DCRn_MSK, s->pBA0 + BA0_DCR0); // Stop play DMA, if active.
2105
2106 // program sampling rates
2107 // Note, for CS4281, capture & play rates can be set independently.
2108 cs4281_play_rate(s, s->prop_dac.rate);
2109
2110 // program DAC parameters
2111 format = DMRn_DMA | DMRn_AUTO | DMRn_TR_READ;
2112 if (s->prop_dac.
2113 fmt & (AFMT_S16_LE | AFMT_U16_LE | AFMT_S16_BE | AFMT_U16_BE)) { // 16-bit
2114 if (s->prop_dac.fmt & (AFMT_S16_BE | AFMT_U16_BE))
2115 format |= DMRn_BEND; // Big Endian.
2116 if (s->prop_dac.fmt & (AFMT_U16_LE | AFMT_U16_BE))
2117 format |= DMRn_USIGN; // Unsigned.
2118 } else
2119 format |= DMRn_SIZE8 | DMRn_USIGN; // 8-bit, unsigned
2120
2121 if (s->prop_dac.channels < 2)
2122 format |= DMRn_MONO;
2123
2124 writel(format, s->pBA0 + BA0_DMR0);
2125
2126
2127 CS_DBGOUT(CS_PARMS, 2, printk(KERN_INFO
2128 "cs4281: prog_codec(): dac %s %s %s rate=%d DMR0 format=0x%.8x\n",
2129 (format & DMRn_SIZE8) ? "8" : "16",
2130 (format & DMRn_USIGN) ? "Unsigned" : "Signed",
2131 (format & DMRn_MONO) ? "Mono" : "Stereo",
2132 s->prop_dac.rate, format));
2133
2134 s->ena &= ~FMODE_WRITE; // not capturing data yet
2135
2136 }
2137 spin_unlock_irqrestore(&s->lock, flags);
2138 CS_DBGOUT(CS_FUNCTION, 2,
2139 printk(KERN_INFO "cs4281: prog_codec()- \n"));
2140}
2141
2142
2143static int mixer_ioctl(struct cs4281_state *s, unsigned int cmd,
2144 unsigned long arg)
2145{
2146 // Index to mixer_src[] is value of AC97 Input Mux Select Reg.
2147 // Value of array member is recording source Device ID Mask.
2148 static const unsigned int mixer_src[8] = {
2149 SOUND_MASK_MIC, SOUND_MASK_CD, 0, SOUND_MASK_LINE1,
2150 SOUND_MASK_LINE, SOUND_MASK_VOLUME, 0, 0
2151 };
2152 void __user *argp = (void __user *)arg;
2153
2154 // Index of mixtable1[] member is Device ID
2155 // and must be <= SOUND_MIXER_NRDEVICES.
2156 // Value of array member is index into s->mix.vol[]
2157 static const unsigned char mixtable1[SOUND_MIXER_NRDEVICES] = {
2158 [SOUND_MIXER_PCM] = 1, // voice
2159 [SOUND_MIXER_LINE1] = 2, // AUX
2160 [SOUND_MIXER_CD] = 3, // CD
2161 [SOUND_MIXER_LINE] = 4, // Line
2162 [SOUND_MIXER_SYNTH] = 5, // FM
2163 [SOUND_MIXER_MIC] = 6, // Mic
2164 [SOUND_MIXER_SPEAKER] = 7, // Speaker
2165 [SOUND_MIXER_RECLEV] = 8, // Recording level
2166 [SOUND_MIXER_VOLUME] = 9 // Master Volume
2167 };
2168
2169
2170 static const unsigned mixreg[] = {
2171 BA0_AC97_PCM_OUT_VOLUME,
2172 BA0_AC97_AUX_VOLUME,
2173 BA0_AC97_CD_VOLUME,
2174 BA0_AC97_LINE_IN_VOLUME
2175 };
2176 unsigned char l, r, rl, rr, vidx;
2177 unsigned char attentbl[11] =
2178 { 63, 42, 26, 17, 14, 11, 8, 6, 4, 2, 0 };
2179 unsigned temp1;
2180 int i, val;
2181
2182 VALIDATE_STATE(s);
2183 CS_DBGOUT(CS_FUNCTION, 4, printk(KERN_INFO
2184 "cs4281: mixer_ioctl(): s=%p cmd=0x%.8x\n", s, cmd));
2185#if CSDEBUG
2186 cs_printioctl(cmd);
2187#endif
2188#if CSDEBUG_INTERFACE
2189
2190 if ((cmd == SOUND_MIXER_CS_GETDBGMASK) ||
2191 (cmd == SOUND_MIXER_CS_SETDBGMASK) ||
2192 (cmd == SOUND_MIXER_CS_GETDBGLEVEL) ||
2193 (cmd == SOUND_MIXER_CS_SETDBGLEVEL) ||
2194 (cmd == SOUND_MIXER_CS_APM))
2195 {
2196 switch (cmd) {
2197
2198 case SOUND_MIXER_CS_GETDBGMASK:
2199 return put_user(cs_debugmask,
2200 (unsigned long __user *) argp);
2201
2202 case SOUND_MIXER_CS_GETDBGLEVEL:
2203 return put_user(cs_debuglevel,
2204 (unsigned long __user *) argp);
2205
2206 case SOUND_MIXER_CS_SETDBGMASK:
2207 if (get_user(val, (unsigned long __user *) argp))
2208 return -EFAULT;
2209 cs_debugmask = val;
2210 return 0;
2211
2212 case SOUND_MIXER_CS_SETDBGLEVEL:
2213 if (get_user(val, (unsigned long __user *) argp))
2214 return -EFAULT;
2215 cs_debuglevel = val;
2216 return 0;
2217#ifndef NOT_CS4281_PM
2218 case SOUND_MIXER_CS_APM:
2219 if (get_user(val, (unsigned long __user *) argp))
2220 return -EFAULT;
2221 if(val == CS_IOCTL_CMD_SUSPEND)
2222 cs4281_suspend(s);
2223 else if(val == CS_IOCTL_CMD_RESUME)
2224 cs4281_resume(s);
2225 else
2226 {
2227 CS_DBGOUT(CS_ERROR, 1, printk(KERN_INFO
2228 "cs4281: mixer_ioctl(): invalid APM cmd (%d)\n",
2229 val));
2230 }
2231 return 0;
2232#endif
2233 default:
2234 CS_DBGOUT(CS_ERROR, 1, printk(KERN_INFO
2235 "cs4281: mixer_ioctl(): ERROR unknown debug cmd\n"));
2236 return 0;
2237 }
2238 }
2239#endif
2240
2241 if (cmd == SOUND_MIXER_PRIVATE1) {
2242 // enable/disable/query mixer preamp
2243 if (get_user(val, (int __user *) argp))
2244 return -EFAULT;
2245 if (val != -1) {
2246 cs4281_read_ac97(s, BA0_AC97_MIC_VOLUME, &temp1);
2247 temp1 = val ? (temp1 | 0x40) : (temp1 & 0xffbf);
2248 cs4281_write_ac97(s, BA0_AC97_MIC_VOLUME, temp1);
2249 }
2250 cs4281_read_ac97(s, BA0_AC97_MIC_VOLUME, &temp1);
2251 val = (temp1 & 0x40) ? 1 : 0;
2252 return put_user(val, (int __user *) argp);
2253 }
2254 if (cmd == SOUND_MIXER_PRIVATE2) {
2255 // enable/disable/query spatializer
2256 if (get_user(val, (int __user *)argp))
2257 return -EFAULT;
2258 if (val != -1) {
2259 temp1 = (val & 0x3f) >> 2;
2260 cs4281_write_ac97(s, BA0_AC97_3D_CONTROL, temp1);
2261 cs4281_read_ac97(s, BA0_AC97_GENERAL_PURPOSE,
2262 &temp1);
2263 cs4281_write_ac97(s, BA0_AC97_GENERAL_PURPOSE,
2264 temp1 | 0x2000);
2265 }
2266 cs4281_read_ac97(s, BA0_AC97_3D_CONTROL, &temp1);
2267 return put_user((temp1 << 2) | 3, (int __user *)argp);
2268 }
2269 if (cmd == SOUND_MIXER_INFO) {
2270 mixer_info info;
2271 strlcpy(info.id, "CS4281", sizeof(info.id));
2272 strlcpy(info.name, "Crystal CS4281", sizeof(info.name));
2273 info.modify_counter = s->mix.modcnt;
2274 if (copy_to_user(argp, &info, sizeof(info)))
2275 return -EFAULT;
2276 return 0;
2277 }
2278 if (cmd == SOUND_OLD_MIXER_INFO) {
2279 _old_mixer_info info;
2280 strlcpy(info.id, "CS4281", sizeof(info.id));
2281 strlcpy(info.name, "Crystal CS4281", sizeof(info.name));
2282 if (copy_to_user(argp, &info, sizeof(info)))
2283 return -EFAULT;
2284 return 0;
2285 }
2286 if (cmd == OSS_GETVERSION)
2287 return put_user(SOUND_VERSION, (int __user *) argp);
2288
2289 if (_IOC_TYPE(cmd) != 'M' || _SIOC_SIZE(cmd) != sizeof(int))
2290 return -EINVAL;
2291
2292 // If ioctl has only the SIOC_READ bit(bit 31)
2293 // on, process the only-read commands.
2294 if (_SIOC_DIR(cmd) == _SIOC_READ) {
2295 switch (_IOC_NR(cmd)) {
2296 case SOUND_MIXER_RECSRC: // Arg contains a bit for each recording source
2297 cs4281_read_ac97(s, BA0_AC97_RECORD_SELECT, &temp1);
2298 return put_user(mixer_src[temp1&7], (int __user *)argp);
2299
2300 case SOUND_MIXER_DEVMASK: // Arg contains a bit for each supported device
2301 return put_user(SOUND_MASK_PCM | SOUND_MASK_SYNTH |
2302 SOUND_MASK_CD | SOUND_MASK_LINE |
2303 SOUND_MASK_LINE1 | SOUND_MASK_MIC |
2304 SOUND_MASK_VOLUME |
2305 SOUND_MASK_RECLEV |
2306 SOUND_MASK_SPEAKER, (int __user *)argp);
2307
2308 case SOUND_MIXER_RECMASK: // Arg contains a bit for each supported recording source
2309 return put_user(SOUND_MASK_LINE | SOUND_MASK_MIC |
2310 SOUND_MASK_CD | SOUND_MASK_VOLUME |
2311 SOUND_MASK_LINE1, (int __user *) argp);
2312
2313 case SOUND_MIXER_STEREODEVS: // Mixer channels supporting stereo
2314 return put_user(SOUND_MASK_PCM | SOUND_MASK_SYNTH |
2315 SOUND_MASK_CD | SOUND_MASK_LINE |
2316 SOUND_MASK_LINE1 | SOUND_MASK_MIC |
2317 SOUND_MASK_VOLUME |
2318 SOUND_MASK_RECLEV, (int __user *)argp);
2319
2320 case SOUND_MIXER_CAPS:
2321 return put_user(SOUND_CAP_EXCL_INPUT, (int __user *)argp);
2322
2323 default:
2324 i = _IOC_NR(cmd);
2325 if (i >= SOUND_MIXER_NRDEVICES
2326 || !(vidx = mixtable1[i]))
2327 return -EINVAL;
2328 return put_user(s->mix.vol[vidx - 1], (int __user *)argp);
2329 }
2330 }
2331 // If ioctl doesn't have both the SIOC_READ and
2332 // the SIOC_WRITE bit set, return invalid.
2333 if (_SIOC_DIR(cmd) != (_SIOC_READ | _SIOC_WRITE))
2334 return -EINVAL;
2335
2336 // Increment the count of volume writes.
2337 s->mix.modcnt++;
2338
2339 // Isolate the command; it must be a write.
2340 switch (_IOC_NR(cmd)) {
2341
2342 case SOUND_MIXER_RECSRC: // Arg contains a bit for each recording source
2343 if (get_user(val, (int __user *)argp))
2344 return -EFAULT;
2345 i = hweight32(val); // i = # bits on in val.
2346 if (i != 1) // One & only 1 bit must be on.
2347 return 0;
2348 for (i = 0; i < sizeof(mixer_src) / sizeof(int); i++) {
2349 if (val == mixer_src[i]) {
2350 temp1 = (i << 8) | i;
2351 cs4281_write_ac97(s,
2352 BA0_AC97_RECORD_SELECT,
2353 temp1);
2354 return 0;
2355 }
2356 }
2357 return 0;
2358
2359 case SOUND_MIXER_VOLUME:
2360 if (get_user(val, (int __user *)argp))
2361 return -EFAULT;
2362 l = val & 0xff;
2363 if (l > 100)
2364 l = 100; // Max soundcard.h vol is 100.
2365 if (l < 6) {
2366 rl = 63;
2367 l = 0;
2368 } else
2369 rl = attentbl[(10 * l) / 100]; // Convert 0-100 vol to 63-0 atten.
2370
2371 r = (val >> 8) & 0xff;
2372 if (r > 100)
2373 r = 100; // Max right volume is 100, too
2374 if (r < 6) {
2375 rr = 63;
2376 r = 0;
2377 } else
2378 rr = attentbl[(10 * r) / 100]; // Convert volume to attenuation.
2379
2380 if ((rl > 60) && (rr > 60)) // If both l & r are 'low',
2381 temp1 = 0x8000; // turn on the mute bit.
2382 else
2383 temp1 = 0;
2384
2385 temp1 |= (rl << 8) | rr;
2386
2387 cs4281_write_ac97(s, BA0_AC97_MASTER_VOLUME, temp1);
2388 cs4281_write_ac97(s, BA0_AC97_HEADPHONE_VOLUME, temp1);
2389
2390#ifdef OSS_DOCUMENTED_MIXER_SEMANTICS
2391 s->mix.vol[8] = ((unsigned int) r << 8) | l;
2392#else
2393 s->mix.vol[8] = val;
2394#endif
2395 return put_user(s->mix.vol[8], (int __user *)argp);
2396
2397 case SOUND_MIXER_SPEAKER:
2398 if (get_user(val, (int __user *)argp))
2399 return -EFAULT;
2400 l = val & 0xff;
2401 if (l > 100)
2402 l = 100;
2403 if (l < 3) {
2404 rl = 0;
2405 l = 0;
2406 } else {
2407 rl = (l * 2 - 5) / 13; // Convert 0-100 range to 0-15.
2408 l = (rl * 13 + 5) / 2;
2409 }
2410
2411 if (rl < 3) {
2412 temp1 = 0x8000;
2413 rl = 0;
2414 } else
2415 temp1 = 0;
2416 rl = 15 - rl; // Convert volume to attenuation.
2417 temp1 |= rl << 1;
2418 cs4281_write_ac97(s, BA0_AC97_PC_BEEP_VOLUME, temp1);
2419
2420#ifdef OSS_DOCUMENTED_MIXER_SEMANTICS
2421 s->mix.vol[6] = l << 8;
2422#else
2423 s->mix.vol[6] = val;
2424#endif
2425 return put_user(s->mix.vol[6], (int __user *)argp);
2426
2427 case SOUND_MIXER_RECLEV:
2428 if (get_user(val, (int __user *)argp))
2429 return -EFAULT;
2430 l = val & 0xff;
2431 if (l > 100)
2432 l = 100;
2433 r = (val >> 8) & 0xff;
2434 if (r > 100)
2435 r = 100;
2436 rl = (l * 2 - 5) / 13; // Convert 0-100 scale to 0-15.
2437 rr = (r * 2 - 5) / 13;
2438 if (rl < 3 && rr < 3)
2439 temp1 = 0x8000;
2440 else
2441 temp1 = 0;
2442
2443 temp1 = temp1 | (rl << 8) | rr;
2444 cs4281_write_ac97(s, BA0_AC97_RECORD_GAIN, temp1);
2445
2446#ifdef OSS_DOCUMENTED_MIXER_SEMANTICS
2447 s->mix.vol[7] = ((unsigned int) r << 8) | l;
2448#else
2449 s->mix.vol[7] = val;
2450#endif
2451 return put_user(s->mix.vol[7], (int __user *)argp);
2452
2453 case SOUND_MIXER_MIC:
2454 if (get_user(val, (int __user *)argp))
2455 return -EFAULT;
2456 l = val & 0xff;
2457 if (l > 100)
2458 l = 100;
2459 if (l < 1) {
2460 l = 0;
2461 rl = 0;
2462 } else {
2463 rl = ((unsigned) l * 5 - 4) / 16; // Convert 0-100 range to 0-31.
2464 l = (rl * 16 + 4) / 5;
2465 }
2466 cs4281_read_ac97(s, BA0_AC97_MIC_VOLUME, &temp1);
2467 temp1 &= 0x40; // Isolate 20db gain bit.
2468 if (rl < 3) {
2469 temp1 |= 0x8000;
2470 rl = 0;
2471 }
2472 rl = 31 - rl; // Convert volume to attenuation.
2473 temp1 |= rl;
2474 cs4281_write_ac97(s, BA0_AC97_MIC_VOLUME, temp1);
2475
2476#ifdef OSS_DOCUMENTED_MIXER_SEMANTICS
2477 s->mix.vol[5] = val << 8;
2478#else
2479 s->mix.vol[5] = val;
2480#endif
2481 return put_user(s->mix.vol[5], (int __user *)argp);
2482
2483
2484 case SOUND_MIXER_SYNTH:
2485 if (get_user(val, (int __user *)argp))
2486 return -EFAULT;
2487 l = val & 0xff;
2488 if (l > 100)
2489 l = 100;
2490 if (get_user(val, (int __user *)argp))
2491 return -EFAULT;
2492 r = (val >> 8) & 0xff;
2493 if (r > 100)
2494 r = 100;
2495 rl = (l * 2 - 11) / 3; // Convert 0-100 range to 0-63.
2496 rr = (r * 2 - 11) / 3;
2497 if (rl < 3) // If l is low, turn on
2498 temp1 = 0x0080; // the mute bit.
2499 else
2500 temp1 = 0;
2501
2502 rl = 63 - rl; // Convert vol to attenuation.
2503 writel(temp1 | rl, s->pBA0 + BA0_FMLVC);
2504 if (rr < 3) // If rr is low, turn on
2505 temp1 = 0x0080; // the mute bit.
2506 else
2507 temp1 = 0;
2508 rr = 63 - rr; // Convert vol to attenuation.
2509 writel(temp1 | rr, s->pBA0 + BA0_FMRVC);
2510
2511#ifdef OSS_DOCUMENTED_MIXER_SEMANTICS
2512 s->mix.vol[4] = (r << 8) | l;
2513#else
2514 s->mix.vol[4] = val;
2515#endif
2516 return put_user(s->mix.vol[4], (int __user *)argp);
2517
2518
2519 default:
2520 CS_DBGOUT(CS_IOCTL, 4, printk(KERN_INFO
2521 "cs4281: mixer_ioctl(): default\n"));
2522
2523 i = _IOC_NR(cmd);
2524 if (i >= SOUND_MIXER_NRDEVICES || !(vidx = mixtable1[i]))
2525 return -EINVAL;
2526 if (get_user(val, (int __user *)argp))
2527 return -EFAULT;
2528 l = val & 0xff;
2529 if (l > 100)
2530 l = 100;
2531 if (l < 1) {
2532 l = 0;
2533 rl = 31;
2534 } else
2535 rl = (attentbl[(l * 10) / 100]) >> 1;
2536
2537 r = (val >> 8) & 0xff;
2538 if (r > 100)
2539 r = 100;
2540 if (r < 1) {
2541 r = 0;
2542 rr = 31;
2543 } else
2544 rr = (attentbl[(r * 10) / 100]) >> 1;
2545 if ((rl > 30) && (rr > 30))
2546 temp1 = 0x8000;
2547 else
2548 temp1 = 0;
2549 temp1 = temp1 | (rl << 8) | rr;
2550 cs4281_write_ac97(s, mixreg[vidx - 1], temp1);
2551
2552#ifdef OSS_DOCUMENTED_MIXER_SEMANTICS
2553 s->mix.vol[vidx - 1] = ((unsigned int) r << 8) | l;
2554#else
2555 s->mix.vol[vidx - 1] = val;
2556#endif
2557#ifndef NOT_CS4281_PM
2558 CS_DBGOUT(CS_PM, 9, printk(KERN_INFO
2559 "write ac97 mixreg[%d]=0x%x mix.vol[]=0x%x\n",
2560 vidx-1,temp1,s->mix.vol[vidx-1]));
2561#endif
2562 return put_user(s->mix.vol[vidx - 1], (int __user *)argp);
2563 }
2564}
2565
2566
2567// ---------------------------------------------------------------------
2568
2569static int cs4281_open_mixdev(struct inode *inode, struct file *file)
2570{
2571 unsigned int minor = iminor(inode);
2572 struct cs4281_state *s=NULL;
2573 struct list_head *entry;
2574
2575 CS_DBGOUT(CS_FUNCTION | CS_OPEN, 4,
2576 printk(KERN_INFO "cs4281: cs4281_open_mixdev()+\n"));
2577
2578 list_for_each(entry, &cs4281_devs)
2579 {
2580 s = list_entry(entry, struct cs4281_state, list);
2581 if(s->dev_mixer == minor)
2582 break;
2583 }
2584 if (!s)
2585 {
2586 CS_DBGOUT(CS_FUNCTION | CS_OPEN | CS_ERROR, 2,
2587 printk(KERN_INFO "cs4281: cs4281_open_mixdev()- -ENODEV\n"));
2588 return -ENODEV;
2589 }
2590 VALIDATE_STATE(s);
2591 file->private_data = s;
2592
2593 CS_DBGOUT(CS_FUNCTION | CS_OPEN, 4,
2594 printk(KERN_INFO "cs4281: cs4281_open_mixdev()- 0\n"));
2595
2596 return nonseekable_open(inode, file);
2597}
2598
2599
2600static int cs4281_release_mixdev(struct inode *inode, struct file *file)
2601{
2602 struct cs4281_state *s =
2603 (struct cs4281_state *) file->private_data;
2604
2605 VALIDATE_STATE(s);
2606 return 0;
2607}
2608
2609
2610static int cs4281_ioctl_mixdev(struct inode *inode, struct file *file,
2611 unsigned int cmd, unsigned long arg)
2612{
2613 return mixer_ioctl((struct cs4281_state *) file->private_data, cmd,
2614 arg);
2615}
2616
2617
2618// ******************************************************************************************
2619// Mixer file operations struct.
2620// ******************************************************************************************
2621static /*const */ struct file_operations cs4281_mixer_fops = {
2622 .owner = THIS_MODULE,
2623 .llseek = no_llseek,
2624 .ioctl = cs4281_ioctl_mixdev,
2625 .open = cs4281_open_mixdev,
2626 .release = cs4281_release_mixdev,
2627};
2628
2629// ---------------------------------------------------------------------
2630
2631
2632static int drain_adc(struct cs4281_state *s, int nonblock)
2633{
2634 DECLARE_WAITQUEUE(wait, current);
2635 unsigned long flags;
2636 int count;
2637 unsigned tmo;
2638
2639 if (s->dma_adc.mapped)
2640 return 0;
2641 add_wait_queue(&s->dma_adc.wait, &wait);
2642 for (;;) {
2643 set_current_state(TASK_INTERRUPTIBLE);
2644 spin_lock_irqsave(&s->lock, flags);
2645 count = s->dma_adc.count;
2646 CS_DBGOUT(CS_FUNCTION, 2,
2647 printk(KERN_INFO "cs4281: drain_adc() %d\n", count));
2648 spin_unlock_irqrestore(&s->lock, flags);
2649 if (count <= 0) {
2650 CS_DBGOUT(CS_FUNCTION, 2, printk(KERN_INFO
2651 "cs4281: drain_adc() count<0\n"));
2652 break;
2653 }
2654 if (signal_pending(current))
2655 break;
2656 if (nonblock) {
2657 remove_wait_queue(&s->dma_adc.wait, &wait);
2658 current->state = TASK_RUNNING;
2659 return -EBUSY;
2660 }
2661 tmo =
2662 3 * HZ * (count +
2663 s->dma_adc.fragsize) / 2 / s->prop_adc.rate;
2664 if (s->prop_adc.fmt & (AFMT_S16_LE | AFMT_U16_LE))
2665 tmo >>= 1;
2666 if (s->prop_adc.channels > 1)
2667 tmo >>= 1;
2668 if (!schedule_timeout(tmo + 1))
2669 printk(KERN_DEBUG "cs4281: dma timed out??\n");
2670 }
2671 remove_wait_queue(&s->dma_adc.wait, &wait);
2672 current->state = TASK_RUNNING;
2673 if (signal_pending(current))
2674 return -ERESTARTSYS;
2675 return 0;
2676}
2677
2678static int drain_dac(struct cs4281_state *s, int nonblock)
2679{
2680 DECLARE_WAITQUEUE(wait, current);
2681 unsigned long flags;
2682 int count;
2683 unsigned tmo;
2684
2685 if (s->dma_dac.mapped)
2686 return 0;
2687 add_wait_queue(&s->dma_dac.wait, &wait);
2688 for (;;) {
2689 set_current_state(TASK_INTERRUPTIBLE);
2690 spin_lock_irqsave(&s->lock, flags);
2691 count = s->dma_dac.count;
2692 spin_unlock_irqrestore(&s->lock, flags);
2693 if (count <= 0)
2694 break;
2695 if (signal_pending(current))
2696 break;
2697 if (nonblock) {
2698 remove_wait_queue(&s->dma_dac.wait, &wait);
2699 current->state = TASK_RUNNING;
2700 return -EBUSY;
2701 }
2702 tmo =
2703 3 * HZ * (count +
2704 s->dma_dac.fragsize) / 2 / s->prop_dac.rate;
2705 if (s->prop_dac.fmt & (AFMT_S16_LE | AFMT_U16_LE))
2706 tmo >>= 1;
2707 if (s->prop_dac.channels > 1)
2708 tmo >>= 1;
2709 if (!schedule_timeout(tmo + 1))
2710 printk(KERN_DEBUG "cs4281: dma timed out??\n");
2711 }
2712 remove_wait_queue(&s->dma_dac.wait, &wait);
2713 current->state = TASK_RUNNING;
2714 if (signal_pending(current))
2715 return -ERESTARTSYS;
2716 return 0;
2717}
2718
2719//****************************************************************************
2720//
2721// CopySamples copies 16-bit stereo samples from the source to the
2722// destination, possibly converting down to either 8-bit or mono or both.
2723// count specifies the number of output bytes to write.
2724//
2725// Arguments:
2726//
2727// dst - Pointer to a destination buffer.
2728// src - Pointer to a source buffer
2729// count - The number of bytes to copy into the destination buffer.
2730// iChannels - Stereo - 2
2731// Mono - 1
2732// fmt - AFMT_xxx (soundcard.h formats)
2733//
2734// NOTES: only call this routine for conversion to 8bit from 16bit
2735//
2736//****************************************************************************
2737static void CopySamples(char *dst, char *src, int count, int iChannels,
2738 unsigned fmt)
2739{
2740
2741 unsigned short *psSrc;
2742 long lAudioSample;
2743
2744 CS_DBGOUT(CS_FUNCTION, 2,
2745 printk(KERN_INFO "cs4281: CopySamples()+ "));
2746 CS_DBGOUT(CS_WAVE_READ, 8, printk(KERN_INFO
2747 " dst=%p src=%p count=%d iChannels=%d fmt=0x%x\n",
2748 dst, src, (unsigned) count, (unsigned) iChannels, (unsigned) fmt));
2749
2750 // Gershwin does format conversion in hardware so normally
2751 // we don't do any host based coversion. The data formatter
2752 // truncates 16 bit data to 8 bit and that causes some hiss.
2753 // We have already forced the HW to do 16 bit sampling and
2754 // 2 channel so that we can use software to round instead
2755 // of truncate
2756
2757 //
2758 // See if the data should be output as 8-bit unsigned stereo.
2759 // or if the data should be output at 8-bit unsigned mono.
2760 //
2761 if ( ((iChannels == 2) && (fmt & AFMT_U8)) ||
2762 ((iChannels == 1) && (fmt & AFMT_U8)) ) {
2763 //
2764 // Convert each 16-bit unsigned stereo sample to 8-bit unsigned
2765 // stereo using rounding.
2766 //
2767 psSrc = (unsigned short *) src;
2768 count = count / 2;
2769 while (count--) {
2770 lAudioSample = (long) psSrc[count] + (long) 0x80;
2771 if (lAudioSample > 0xffff) {
2772 lAudioSample = 0xffff;
2773 }
2774 dst[count] = (char) (lAudioSample >> 8);
2775 }
2776 }
2777 //
2778 // check for 8-bit signed stereo.
2779 //
2780 else if ((iChannels == 2) && (fmt & AFMT_S8)) {
2781 //
2782 // Convert each 16-bit stereo sample to 8-bit stereo using rounding.
2783 //
2784 psSrc = (short *) src;
2785 while (count--) {
2786 lAudioSample =
2787 (((long) psSrc[0] + (long) psSrc[1]) / 2);
2788 psSrc += 2;
2789 *dst++ = (char) ((short) lAudioSample >> 8);
2790 }
2791 }
2792 //
2793 // Otherwise, the data should be output as 8-bit signed mono.
2794 //
2795 else if ((iChannels == 1) && (fmt & AFMT_S8)) {
2796 //
2797 // Convert each 16-bit signed mono sample to 8-bit signed mono
2798 // using rounding.
2799 //
2800 psSrc = (short *) src;
2801 count = count / 2;
2802 while (count--) {
2803 lAudioSample =
2804 (((long) psSrc[0] + (long) psSrc[1]) / 2);
2805 if (lAudioSample > 0x7fff) {
2806 lAudioSample = 0x7fff;
2807 }
2808 psSrc += 2;
2809 *dst++ = (char) ((short) lAudioSample >> 8);
2810 }
2811 }
2812}
2813
2814//
2815// cs_copy_to_user()
2816// replacement for the standard copy_to_user, to allow for a conversion from
2817// 16 bit to 8 bit if the record conversion is active. the cs4281 has some
2818// issues with 8 bit capture, so the driver always captures data in 16 bit
2819// and then if the user requested 8 bit, converts from 16 to 8 bit.
2820//
2821static unsigned cs_copy_to_user(struct cs4281_state *s, void __user *dest,
2822 unsigned *hwsrc, unsigned cnt,
2823 unsigned *copied)
2824{
2825 void *src = hwsrc; //default to the standard destination buffer addr
2826
2827 CS_DBGOUT(CS_FUNCTION, 6, printk(KERN_INFO
2828 "cs_copy_to_user()+ fmt=0x%x fmt_o=0x%x cnt=%d dest=%p\n",
2829 s->prop_adc.fmt, s->prop_adc.fmt_original,
2830 (unsigned) cnt, dest));
2831
2832 if (cnt > s->dma_adc.dmasize) {
2833 cnt = s->dma_adc.dmasize;
2834 }
2835 if (!cnt) {
2836 *copied = 0;
2837 return 0;
2838 }
2839 if (s->conversion) {
2840 if (!s->tmpbuff) {
2841 *copied = cnt / 2;
2842 return 0;
2843 }
2844 CopySamples(s->tmpbuff, (void *) hwsrc, cnt,
2845 (unsigned) s->prop_adc.channels,
2846 s->prop_adc.fmt_original);
2847 src = s->tmpbuff;
2848 cnt = cnt / 2;
2849 }
2850
2851 if (copy_to_user(dest, src, cnt)) {
2852 *copied = 0;
2853 return -EFAULT;
2854 }
2855 *copied = cnt;
2856 CS_DBGOUT(CS_FUNCTION, 2, printk(KERN_INFO
2857 "cs4281: cs_copy_to_user()- copied bytes is %d \n", cnt));
2858 return 0;
2859}
2860
2861// ---------------------------------------------------------------------
2862
2863static ssize_t cs4281_read(struct file *file, char __user *buffer, size_t count,
2864 loff_t * ppos)
2865{
2866 struct cs4281_state *s =
2867 (struct cs4281_state *) file->private_data;
2868 ssize_t ret;
2869 unsigned long flags;
2870 unsigned swptr;
2871 int cnt;
2872 unsigned copied = 0;
2873
2874 CS_DBGOUT(CS_FUNCTION | CS_WAVE_READ, 2,
2875 printk(KERN_INFO "cs4281: cs4281_read()+ %Zu \n", count));
2876
2877 VALIDATE_STATE(s);
2878 if (s->dma_adc.mapped)
2879 return -ENXIO;
2880 if (!s->dma_adc.ready && (ret = prog_dmabuf_adc(s)))
2881 return ret;
2882 if (!access_ok(VERIFY_WRITE, buffer, count))
2883 return -EFAULT;
2884 ret = 0;
2885//
2886// "count" is the amount of bytes to read (from app), is decremented each loop
2887// by the amount of bytes that have been returned to the user buffer.
2888// "cnt" is the running total of each read from the buffer (changes each loop)
2889// "buffer" points to the app's buffer
2890// "ret" keeps a running total of the amount of bytes that have been copied
2891// to the user buffer.
2892// "copied" is the total bytes copied into the user buffer for each loop.
2893//
2894 while (count > 0) {
2895 CS_DBGOUT(CS_WAVE_READ, 8, printk(KERN_INFO
2896 "_read() count>0 count=%Zu .count=%d .swptr=%d .hwptr=%d \n",
2897 count, s->dma_adc.count,
2898 s->dma_adc.swptr, s->dma_adc.hwptr));
2899 spin_lock_irqsave(&s->lock, flags);
2900
2901 // get the current copy point of the sw buffer
2902 swptr = s->dma_adc.swptr;
2903
2904 // cnt is the amount of unread bytes from the end of the
2905 // hw buffer to the current sw pointer
2906 cnt = s->dma_adc.dmasize - swptr;
2907
2908 // dma_adc.count is the current total bytes that have not been read.
2909 // if the amount of unread bytes from the current sw pointer to the
2910 // end of the buffer is greater than the current total bytes that
2911 // have not been read, then set the "cnt" (unread bytes) to the
2912 // amount of unread bytes.
2913
2914 if (s->dma_adc.count < cnt)
2915 cnt = s->dma_adc.count;
2916 spin_unlock_irqrestore(&s->lock, flags);
2917 //
2918 // if we are converting from 8/16 then we need to copy
2919 // twice the number of 16 bit bytes then 8 bit bytes.
2920 //
2921 if (s->conversion) {
2922 if (cnt > (count * 2))
2923 cnt = (count * 2);
2924 } else {
2925 if (cnt > count)
2926 cnt = count;
2927 }
2928 //
2929 // "cnt" NOW is the smaller of the amount that will be read,
2930 // and the amount that is requested in this read (or partial).
2931 // if there are no bytes in the buffer to read, then start the
2932 // ADC and wait for the interrupt handler to wake us up.
2933 //
2934 if (cnt <= 0) {
2935
2936 // start up the dma engine and then continue back to the top of
2937 // the loop when wake up occurs.
2938 start_adc(s);
2939 if (file->f_flags & O_NONBLOCK)
2940 return ret ? ret : -EAGAIN;
2941 interruptible_sleep_on(&s->dma_adc.wait);
2942 if (signal_pending(current))
2943 return ret ? ret : -ERESTARTSYS;
2944 continue;
2945 }
2946 // there are bytes in the buffer to read.
2947 // copy from the hw buffer over to the user buffer.
2948 // user buffer is designated by "buffer"
2949 // virtual address to copy from is rawbuf+swptr
2950 // the "cnt" is the number of bytes to read.
2951
2952 CS_DBGOUT(CS_WAVE_READ, 2, printk(KERN_INFO
2953 "_read() copy_to cnt=%d count=%Zu ", cnt, count));
2954 CS_DBGOUT(CS_WAVE_READ, 8, printk(KERN_INFO
2955 " .dmasize=%d .count=%d buffer=%p ret=%Zd\n",
2956 s->dma_adc.dmasize, s->dma_adc.count, buffer, ret));
2957
2958 if (cs_copy_to_user
2959 (s, buffer, s->dma_adc.rawbuf + swptr, cnt, &copied))
2960 return ret ? ret : -EFAULT;
2961 swptr = (swptr + cnt) % s->dma_adc.dmasize;
2962 spin_lock_irqsave(&s->lock, flags);
2963 s->dma_adc.swptr = swptr;
2964 s->dma_adc.count -= cnt;
2965 spin_unlock_irqrestore(&s->lock, flags);
2966 count -= copied;
2967 buffer += copied;
2968 ret += copied;
2969 start_adc(s);
2970 }
2971 CS_DBGOUT(CS_FUNCTION | CS_WAVE_READ, 2,
2972 printk(KERN_INFO "cs4281: cs4281_read()- %Zd\n", ret));
2973 return ret;
2974}
2975
2976
2977static ssize_t cs4281_write(struct file *file, const char __user *buffer,
2978 size_t count, loff_t * ppos)
2979{
2980 struct cs4281_state *s =
2981 (struct cs4281_state *) file->private_data;
2982 ssize_t ret;
2983 unsigned long flags;
2984 unsigned swptr, hwptr, busaddr;
2985 int cnt;
2986
2987 CS_DBGOUT(CS_FUNCTION | CS_WAVE_WRITE, 2,
2988 printk(KERN_INFO "cs4281: cs4281_write()+ count=%Zu\n",
2989 count));
2990 VALIDATE_STATE(s);
2991
2992 if (s->dma_dac.mapped)
2993 return -ENXIO;
2994 if (!s->dma_dac.ready && (ret = prog_dmabuf_dac(s)))
2995 return ret;
2996 if (!access_ok(VERIFY_READ, buffer, count))
2997 return -EFAULT;
2998 ret = 0;
2999 while (count > 0) {
3000 spin_lock_irqsave(&s->lock, flags);
3001 if (s->dma_dac.count < 0) {
3002 s->dma_dac.count = 0;
3003 s->dma_dac.swptr = s->dma_dac.hwptr;
3004 }
3005 if (s->dma_dac.underrun) {
3006 s->dma_dac.underrun = 0;
3007 hwptr = readl(s->pBA0 + BA0_DCA0);
3008 busaddr = virt_to_bus(s->dma_dac.rawbuf);
3009 hwptr -= (unsigned) busaddr;
3010 s->dma_dac.swptr = s->dma_dac.hwptr = hwptr;
3011 }
3012 swptr = s->dma_dac.swptr;
3013 cnt = s->dma_dac.dmasize - swptr;
3014 if (s->dma_dac.count + cnt > s->dma_dac.dmasize)
3015 cnt = s->dma_dac.dmasize - s->dma_dac.count;
3016 spin_unlock_irqrestore(&s->lock, flags);
3017 if (cnt > count)
3018 cnt = count;
3019 if (cnt <= 0) {
3020 start_dac(s);
3021 if (file->f_flags & O_NONBLOCK)
3022 return ret ? ret : -EAGAIN;
3023 interruptible_sleep_on(&s->dma_dac.wait);
3024 if (signal_pending(current))
3025 return ret ? ret : -ERESTARTSYS;
3026 continue;
3027 }
3028 if (copy_from_user(s->dma_dac.rawbuf + swptr, buffer, cnt))
3029 return ret ? ret : -EFAULT;
3030 swptr = (swptr + cnt) % s->dma_dac.dmasize;
3031 spin_lock_irqsave(&s->lock, flags);
3032 s->dma_dac.swptr = swptr;
3033 s->dma_dac.count += cnt;
3034 s->dma_dac.endcleared = 0;
3035 spin_unlock_irqrestore(&s->lock, flags);
3036 count -= cnt;
3037 buffer += cnt;
3038 ret += cnt;
3039 start_dac(s);
3040 }
3041 CS_DBGOUT(CS_FUNCTION | CS_WAVE_WRITE, 2,
3042 printk(KERN_INFO "cs4281: cs4281_write()- %Zd\n", ret));
3043 return ret;
3044}
3045
3046
3047static unsigned int cs4281_poll(struct file *file,
3048 struct poll_table_struct *wait)
3049{
3050 struct cs4281_state *s =
3051 (struct cs4281_state *) file->private_data;
3052 unsigned long flags;
3053 unsigned int mask = 0;
3054
3055 CS_DBGOUT(CS_FUNCTION | CS_WAVE_WRITE | CS_WAVE_READ, 4,
3056 printk(KERN_INFO "cs4281: cs4281_poll()+\n"));
3057 VALIDATE_STATE(s);
3058 if (file->f_mode & FMODE_WRITE) {
3059 CS_DBGOUT(CS_FUNCTION | CS_WAVE_WRITE | CS_WAVE_READ, 4,
3060 printk(KERN_INFO
3061 "cs4281: cs4281_poll() wait on FMODE_WRITE\n"));
3062 if(!s->dma_dac.ready && prog_dmabuf_dac(s))
3063 return 0;
3064 poll_wait(file, &s->dma_dac.wait, wait);
3065 }
3066 if (file->f_mode & FMODE_READ) {
3067 CS_DBGOUT(CS_FUNCTION | CS_WAVE_WRITE | CS_WAVE_READ, 4,
3068 printk(KERN_INFO
3069 "cs4281: cs4281_poll() wait on FMODE_READ\n"));
3070 if(!s->dma_dac.ready && prog_dmabuf_adc(s))
3071 return 0;
3072 poll_wait(file, &s->dma_adc.wait, wait);
3073 }
3074 spin_lock_irqsave(&s->lock, flags);
3075 cs4281_update_ptr(s,CS_FALSE);
3076 if (file->f_mode & FMODE_WRITE) {
3077 if (s->dma_dac.mapped) {
3078 if (s->dma_dac.count >=
3079 (signed) s->dma_dac.fragsize) {
3080 if (s->dma_dac.wakeup)
3081 mask |= POLLOUT | POLLWRNORM;
3082 else
3083 mask = 0;
3084 s->dma_dac.wakeup = 0;
3085 }
3086 } else {
3087 if ((signed) (s->dma_dac.dmasize/2) >= s->dma_dac.count)
3088 mask |= POLLOUT | POLLWRNORM;
3089 }
3090 } else if (file->f_mode & FMODE_READ) {
3091 if (s->dma_adc.mapped) {
3092 if (s->dma_adc.count >= (signed) s->dma_adc.fragsize)
3093 mask |= POLLIN | POLLRDNORM;
3094 } else {
3095 if (s->dma_adc.count > 0)
3096 mask |= POLLIN | POLLRDNORM;
3097 }
3098 }
3099 spin_unlock_irqrestore(&s->lock, flags);
3100 CS_DBGOUT(CS_FUNCTION | CS_WAVE_WRITE | CS_WAVE_READ, 4,
3101 printk(KERN_INFO "cs4281: cs4281_poll()- 0x%.8x\n",
3102 mask));
3103 return mask;
3104}
3105
3106
3107static int cs4281_mmap(struct file *file, struct vm_area_struct *vma)
3108{
3109 struct cs4281_state *s =
3110 (struct cs4281_state *) file->private_data;
3111 struct dmabuf *db;
3112 int ret;
3113 unsigned long size;
3114
3115 CS_DBGOUT(CS_FUNCTION | CS_PARMS | CS_OPEN, 4,
3116 printk(KERN_INFO "cs4281: cs4281_mmap()+\n"));
3117
3118 VALIDATE_STATE(s);
3119 if (vma->vm_flags & VM_WRITE) {
3120 if ((ret = prog_dmabuf_dac(s)) != 0)
3121 return ret;
3122 db = &s->dma_dac;
3123 } else if (vma->vm_flags & VM_READ) {
3124 if ((ret = prog_dmabuf_adc(s)) != 0)
3125 return ret;
3126 db = &s->dma_adc;
3127 } else
3128 return -EINVAL;
3129//
3130// only support PLAYBACK for now
3131//
3132 db = &s->dma_dac;
3133
3134 if (cs4x_pgoff(vma) != 0)
3135 return -EINVAL;
3136 size = vma->vm_end - vma->vm_start;
3137 if (size > (PAGE_SIZE << db->buforder))
3138 return -EINVAL;
3139 if (remap_pfn_range(vma, vma->vm_start,
3140 virt_to_phys(db->rawbuf) >> PAGE_SHIFT,
3141 size, vma->vm_page_prot))
3142 return -EAGAIN;
3143 db->mapped = 1;
3144
3145 CS_DBGOUT(CS_FUNCTION | CS_PARMS | CS_OPEN, 4,
3146 printk(KERN_INFO "cs4281: cs4281_mmap()- 0 size=%d\n",
3147 (unsigned) size));
3148
3149 return 0;
3150}
3151
3152
3153static int cs4281_ioctl(struct inode *inode, struct file *file,
3154 unsigned int cmd, unsigned long arg)
3155{
3156 struct cs4281_state *s =
3157 (struct cs4281_state *) file->private_data;
3158 unsigned long flags;
3159 audio_buf_info abinfo;
3160 count_info cinfo;
3161 int val, mapped, ret;
3162 int __user *p = (int __user *)arg;
3163
3164 CS_DBGOUT(CS_FUNCTION, 4, printk(KERN_INFO
3165 "cs4281: cs4281_ioctl(): file=%p cmd=0x%.8x\n", file, cmd));
3166#if CSDEBUG
3167 cs_printioctl(cmd);
3168#endif
3169 VALIDATE_STATE(s);
3170 mapped = ((file->f_mode & FMODE_WRITE) && s->dma_dac.mapped) ||
3171 ((file->f_mode & FMODE_READ) && s->dma_adc.mapped);
3172 switch (cmd) {
3173 case OSS_GETVERSION:
3174 CS_DBGOUT(CS_IOCTL | CS_PARMS, 4, printk(KERN_INFO
3175 "cs4281: cs4281_ioctl(): SOUND_VERSION=0x%.8x\n",
3176 SOUND_VERSION));
3177 return put_user(SOUND_VERSION, p);
3178
3179 case SNDCTL_DSP_SYNC:
3180 CS_DBGOUT(CS_IOCTL, 4, printk(KERN_INFO
3181 "cs4281: cs4281_ioctl(): DSP_SYNC\n"));
3182 if (file->f_mode & FMODE_WRITE)
3183 return drain_dac(s,
3184 0 /*file->f_flags & O_NONBLOCK */
3185 );
3186 return 0;
3187
3188 case SNDCTL_DSP_SETDUPLEX:
3189 return 0;
3190
3191 case SNDCTL_DSP_GETCAPS:
3192 return put_user(DSP_CAP_DUPLEX | DSP_CAP_REALTIME |
3193 DSP_CAP_TRIGGER | DSP_CAP_MMAP,
3194 p);
3195
3196 case SNDCTL_DSP_RESET:
3197 CS_DBGOUT(CS_IOCTL, 4, printk(KERN_INFO
3198 "cs4281: cs4281_ioctl(): DSP_RESET\n"));
3199 if (file->f_mode & FMODE_WRITE) {
3200 stop_dac(s);
3201 synchronize_irq(s->irq);
3202 s->dma_dac.swptr = s->dma_dac.hwptr =
3203 s->dma_dac.count = s->dma_dac.total_bytes =
3204 s->dma_dac.blocks = s->dma_dac.wakeup = 0;
3205 prog_codec(s, CS_TYPE_DAC);
3206 }
3207 if (file->f_mode & FMODE_READ) {
3208 stop_adc(s);
3209 synchronize_irq(s->irq);
3210 s->dma_adc.swptr = s->dma_adc.hwptr =
3211 s->dma_adc.count = s->dma_adc.total_bytes =
3212 s->dma_adc.blocks = s->dma_dac.wakeup = 0;
3213 prog_codec(s, CS_TYPE_ADC);
3214 }
3215 return 0;
3216
3217 case SNDCTL_DSP_SPEED:
3218 if (get_user(val, p))
3219 return -EFAULT;
3220 CS_DBGOUT(CS_IOCTL | CS_PARMS, 4, printk(KERN_INFO
3221 "cs4281: cs4281_ioctl(): DSP_SPEED val=%d\n", val));
3222 //
3223 // support independent capture and playback channels
3224 // assume that the file mode bit determines the
3225 // direction of the data flow.
3226 //
3227 if (file->f_mode & FMODE_READ) {
3228 if (val >= 0) {
3229 stop_adc(s);
3230 s->dma_adc.ready = 0;
3231 // program sampling rates
3232 if (val > 48000)
3233 val = 48000;
3234 if (val < 6300)
3235 val = 6300;
3236 s->prop_adc.rate = val;
3237 prog_codec(s, CS_TYPE_ADC);
3238 }
3239 }
3240 if (file->f_mode & FMODE_WRITE) {
3241 if (val >= 0) {
3242 stop_dac(s);
3243 s->dma_dac.ready = 0;
3244 // program sampling rates
3245 if (val > 48000)
3246 val = 48000;
3247 if (val < 6300)
3248 val = 6300;
3249 s->prop_dac.rate = val;
3250 prog_codec(s, CS_TYPE_DAC);
3251 }
3252 }
3253
3254 if (file->f_mode & FMODE_WRITE)
3255 val = s->prop_dac.rate;
3256 else if (file->f_mode & FMODE_READ)
3257 val = s->prop_adc.rate;
3258
3259 return put_user(val, p);
3260
3261 case SNDCTL_DSP_STEREO:
3262 if (get_user(val, p))
3263 return -EFAULT;
3264 CS_DBGOUT(CS_IOCTL | CS_PARMS, 4, printk(KERN_INFO
3265 "cs4281: cs4281_ioctl(): DSP_STEREO val=%d\n", val));
3266 if (file->f_mode & FMODE_READ) {
3267 stop_adc(s);
3268 s->dma_adc.ready = 0;
3269 s->prop_adc.channels = val ? 2 : 1;
3270 prog_codec(s, CS_TYPE_ADC);
3271 }
3272 if (file->f_mode & FMODE_WRITE) {
3273 stop_dac(s);
3274 s->dma_dac.ready = 0;
3275 s->prop_dac.channels = val ? 2 : 1;
3276 prog_codec(s, CS_TYPE_DAC);
3277 }
3278 return 0;
3279
3280 case SNDCTL_DSP_CHANNELS:
3281 if (get_user(val, p))
3282 return -EFAULT;
3283 CS_DBGOUT(CS_IOCTL | CS_PARMS, 4, printk(KERN_INFO
3284 "cs4281: cs4281_ioctl(): DSP_CHANNELS val=%d\n",
3285 val));
3286 if (val != 0) {
3287 if (file->f_mode & FMODE_READ) {
3288 stop_adc(s);
3289 s->dma_adc.ready = 0;
3290 if (val >= 2)
3291 s->prop_adc.channels = 2;
3292 else
3293 s->prop_adc.channels = 1;
3294 prog_codec(s, CS_TYPE_ADC);
3295 }
3296 if (file->f_mode & FMODE_WRITE) {
3297 stop_dac(s);
3298 s->dma_dac.ready = 0;
3299 if (val >= 2)
3300 s->prop_dac.channels = 2;
3301 else
3302 s->prop_dac.channels = 1;
3303 prog_codec(s, CS_TYPE_DAC);
3304 }
3305 }
3306
3307 if (file->f_mode & FMODE_WRITE)
3308 val = s->prop_dac.channels;
3309 else if (file->f_mode & FMODE_READ)
3310 val = s->prop_adc.channels;
3311
3312 return put_user(val, p);
3313
3314 case SNDCTL_DSP_GETFMTS: // Returns a mask
3315 CS_DBGOUT(CS_IOCTL | CS_PARMS, 4, printk(KERN_INFO
3316 "cs4281: cs4281_ioctl(): DSP_GETFMT val=0x%.8x\n",
3317 AFMT_S16_LE | AFMT_U16_LE | AFMT_S8 |
3318 AFMT_U8));
3319 return put_user(AFMT_S16_LE | AFMT_U16_LE | AFMT_S8 |
3320 AFMT_U8, p);
3321
3322 case SNDCTL_DSP_SETFMT:
3323 if (get_user(val, p))
3324 return -EFAULT;
3325 CS_DBGOUT(CS_IOCTL | CS_PARMS, 4, printk(KERN_INFO
3326 "cs4281: cs4281_ioctl(): DSP_SETFMT val=0x%.8x\n",
3327 val));
3328 if (val != AFMT_QUERY) {
3329 if (file->f_mode & FMODE_READ) {
3330 stop_adc(s);
3331 s->dma_adc.ready = 0;
3332 if (val != AFMT_S16_LE
3333 && val != AFMT_U16_LE && val != AFMT_S8
3334 && val != AFMT_U8)
3335 val = AFMT_U8;
3336 s->prop_adc.fmt = val;
3337 s->prop_adc.fmt_original = s->prop_adc.fmt;
3338 prog_codec(s, CS_TYPE_ADC);
3339 }
3340 if (file->f_mode & FMODE_WRITE) {
3341 stop_dac(s);
3342 s->dma_dac.ready = 0;
3343 if (val != AFMT_S16_LE
3344 && val != AFMT_U16_LE && val != AFMT_S8
3345 && val != AFMT_U8)
3346 val = AFMT_U8;
3347 s->prop_dac.fmt = val;
3348 s->prop_dac.fmt_original = s->prop_dac.fmt;
3349 prog_codec(s, CS_TYPE_DAC);
3350 }
3351 } else {
3352 if (file->f_mode & FMODE_WRITE)
3353 val = s->prop_dac.fmt_original;
3354 else if (file->f_mode & FMODE_READ)
3355 val = s->prop_adc.fmt_original;
3356 }
3357 CS_DBGOUT(CS_IOCTL | CS_PARMS, 4, printk(KERN_INFO
3358 "cs4281: cs4281_ioctl(): DSP_SETFMT return val=0x%.8x\n",
3359 val));
3360 return put_user(val, p);
3361
3362 case SNDCTL_DSP_POST:
3363 CS_DBGOUT(CS_IOCTL, 4, printk(KERN_INFO
3364 "cs4281: cs4281_ioctl(): DSP_POST\n"));
3365 return 0;
3366
3367 case SNDCTL_DSP_GETTRIGGER:
3368 val = 0;
3369 if (file->f_mode & s->ena & FMODE_READ)
3370 val |= PCM_ENABLE_INPUT;
3371 if (file->f_mode & s->ena & FMODE_WRITE)
3372 val |= PCM_ENABLE_OUTPUT;
3373 return put_user(val, p);
3374
3375 case SNDCTL_DSP_SETTRIGGER:
3376 if (get_user(val, p))
3377 return -EFAULT;
3378 if (file->f_mode & FMODE_READ) {
3379 if (val & PCM_ENABLE_INPUT) {
3380 if (!s->dma_adc.ready
3381 && (ret = prog_dmabuf_adc(s)))
3382 return ret;
3383 start_adc(s);
3384 } else
3385 stop_adc(s);
3386 }
3387 if (file->f_mode & FMODE_WRITE) {
3388 if (val & PCM_ENABLE_OUTPUT) {
3389 if (!s->dma_dac.ready
3390 && (ret = prog_dmabuf_dac(s)))
3391 return ret;
3392 start_dac(s);
3393 } else
3394 stop_dac(s);
3395 }
3396 return 0;
3397
3398 case SNDCTL_DSP_GETOSPACE:
3399 if (!(file->f_mode & FMODE_WRITE))
3400 return -EINVAL;
3401 if (!s->dma_dac.ready && (val = prog_dmabuf_dac(s)))
3402 return val;
3403 spin_lock_irqsave(&s->lock, flags);
3404 cs4281_update_ptr(s,CS_FALSE);
3405 abinfo.fragsize = s->dma_dac.fragsize;
3406 if (s->dma_dac.mapped)
3407 abinfo.bytes = s->dma_dac.dmasize;
3408 else
3409 abinfo.bytes =
3410 s->dma_dac.dmasize - s->dma_dac.count;
3411 abinfo.fragstotal = s->dma_dac.numfrag;
3412 abinfo.fragments = abinfo.bytes >> s->dma_dac.fragshift;
3413 CS_DBGOUT(CS_FUNCTION | CS_PARMS, 4, printk(KERN_INFO
3414 "cs4281: cs4281_ioctl(): GETOSPACE .fragsize=%d .bytes=%d .fragstotal=%d .fragments=%d\n",
3415 abinfo.fragsize,abinfo.bytes,abinfo.fragstotal,
3416 abinfo.fragments));
3417 spin_unlock_irqrestore(&s->lock, flags);
3418 return copy_to_user(p, &abinfo,
3419 sizeof(abinfo)) ? -EFAULT : 0;
3420
3421 case SNDCTL_DSP_GETISPACE:
3422 if (!(file->f_mode & FMODE_READ))
3423 return -EINVAL;
3424 if (!s->dma_adc.ready && (val = prog_dmabuf_adc(s)))
3425 return val;
3426 spin_lock_irqsave(&s->lock, flags);
3427 cs4281_update_ptr(s,CS_FALSE);
3428 if (s->conversion) {
3429 abinfo.fragsize = s->dma_adc.fragsize / 2;
3430 abinfo.bytes = s->dma_adc.count / 2;
3431 abinfo.fragstotal = s->dma_adc.numfrag;
3432 abinfo.fragments =
3433 abinfo.bytes >> (s->dma_adc.fragshift - 1);
3434 } else {
3435 abinfo.fragsize = s->dma_adc.fragsize;
3436 abinfo.bytes = s->dma_adc.count;
3437 abinfo.fragstotal = s->dma_adc.numfrag;
3438 abinfo.fragments =
3439 abinfo.bytes >> s->dma_adc.fragshift;
3440 }
3441 spin_unlock_irqrestore(&s->lock, flags);
3442 return copy_to_user(p, &abinfo,
3443 sizeof(abinfo)) ? -EFAULT : 0;
3444
3445 case SNDCTL_DSP_NONBLOCK:
3446 file->f_flags |= O_NONBLOCK;
3447 return 0;
3448
3449 case SNDCTL_DSP_GETODELAY:
3450 if (!(file->f_mode & FMODE_WRITE))
3451 return -EINVAL;
3452 if(!s->dma_dac.ready && prog_dmabuf_dac(s))
3453 return 0;
3454 spin_lock_irqsave(&s->lock, flags);
3455 cs4281_update_ptr(s,CS_FALSE);
3456 val = s->dma_dac.count;
3457 spin_unlock_irqrestore(&s->lock, flags);
3458 return put_user(val, p);
3459
3460 case SNDCTL_DSP_GETIPTR:
3461 if (!(file->f_mode & FMODE_READ))
3462 return -EINVAL;
3463 if(!s->dma_adc.ready && prog_dmabuf_adc(s))
3464 return 0;
3465 spin_lock_irqsave(&s->lock, flags);
3466 cs4281_update_ptr(s,CS_FALSE);
3467 cinfo.bytes = s->dma_adc.total_bytes;
3468 if (s->dma_adc.mapped) {
3469 cinfo.blocks =
3470 (cinfo.bytes >> s->dma_adc.fragshift) -
3471 s->dma_adc.blocks;
3472 s->dma_adc.blocks =
3473 cinfo.bytes >> s->dma_adc.fragshift;
3474 } else {
3475 if (s->conversion) {
3476 cinfo.blocks =
3477 s->dma_adc.count /
3478 2 >> (s->dma_adc.fragshift - 1);
3479 } else
3480 cinfo.blocks =
3481 s->dma_adc.count >> s->dma_adc.
3482 fragshift;
3483 }
3484 if (s->conversion)
3485 cinfo.ptr = s->dma_adc.hwptr / 2;
3486 else
3487 cinfo.ptr = s->dma_adc.hwptr;
3488 if (s->dma_adc.mapped)
3489 s->dma_adc.count &= s->dma_adc.fragsize - 1;
3490 spin_unlock_irqrestore(&s->lock, flags);
3491 if (copy_to_user(p, &cinfo, sizeof(cinfo)))
3492 return -EFAULT;
3493 return 0;
3494
3495 case SNDCTL_DSP_GETOPTR:
3496 if (!(file->f_mode & FMODE_WRITE))
3497 return -EINVAL;
3498 if(!s->dma_dac.ready && prog_dmabuf_dac(s))
3499 return 0;
3500 spin_lock_irqsave(&s->lock, flags);
3501 cs4281_update_ptr(s,CS_FALSE);
3502 cinfo.bytes = s->dma_dac.total_bytes;
3503 if (s->dma_dac.mapped) {
3504 cinfo.blocks =
3505 (cinfo.bytes >> s->dma_dac.fragshift) -
3506 s->dma_dac.blocks;
3507 s->dma_dac.blocks =
3508 cinfo.bytes >> s->dma_dac.fragshift;
3509 } else {
3510 cinfo.blocks =
3511 s->dma_dac.count >> s->dma_dac.fragshift;
3512 }
3513 cinfo.ptr = s->dma_dac.hwptr;
3514 if (s->dma_dac.mapped)
3515 s->dma_dac.count &= s->dma_dac.fragsize - 1;
3516 spin_unlock_irqrestore(&s->lock, flags);
3517 if (copy_to_user(p, &cinfo, sizeof(cinfo)))
3518 return -EFAULT;
3519 return 0;
3520
3521 case SNDCTL_DSP_GETBLKSIZE:
3522 if (file->f_mode & FMODE_WRITE) {
3523 if ((val = prog_dmabuf_dac(s)))
3524 return val;
3525 return put_user(s->dma_dac.fragsize, p);
3526 }
3527 if ((val = prog_dmabuf_adc(s)))
3528 return val;
3529 if (s->conversion)
3530 return put_user(s->dma_adc.fragsize / 2, p);
3531 else
3532 return put_user(s->dma_adc.fragsize, p);
3533
3534 case SNDCTL_DSP_SETFRAGMENT:
3535 if (get_user(val, p))
3536 return -EFAULT;
3537 return 0; // Say OK, but do nothing.
3538
3539 case SNDCTL_DSP_SUBDIVIDE:
3540 if ((file->f_mode & FMODE_READ && s->dma_adc.subdivision)
3541 || (file->f_mode & FMODE_WRITE
3542 && s->dma_dac.subdivision)) return -EINVAL;
3543 if (get_user(val, p))
3544 return -EFAULT;
3545 if (val != 1 && val != 2 && val != 4)
3546 return -EINVAL;
3547 if (file->f_mode & FMODE_READ)
3548 s->dma_adc.subdivision = val;
3549 else if (file->f_mode & FMODE_WRITE)
3550 s->dma_dac.subdivision = val;
3551 return 0;
3552
3553 case SOUND_PCM_READ_RATE:
3554 if (file->f_mode & FMODE_READ)
3555 return put_user(s->prop_adc.rate, p);
3556 else if (file->f_mode & FMODE_WRITE)
3557 return put_user(s->prop_dac.rate, p);
3558
3559 case SOUND_PCM_READ_CHANNELS:
3560 if (file->f_mode & FMODE_READ)
3561 return put_user(s->prop_adc.channels, p);
3562 else if (file->f_mode & FMODE_WRITE)
3563 return put_user(s->prop_dac.channels, p);
3564
3565 case SOUND_PCM_READ_BITS:
3566 if (file->f_mode & FMODE_READ)
3567 return
3568 put_user(
3569 (s->prop_adc.
3570 fmt & (AFMT_S8 | AFMT_U8)) ? 8 : 16,
3571 p);
3572 else if (file->f_mode & FMODE_WRITE)
3573 return
3574 put_user(
3575 (s->prop_dac.
3576 fmt & (AFMT_S8 | AFMT_U8)) ? 8 : 16,
3577 p);
3578
3579 case SOUND_PCM_WRITE_FILTER:
3580 case SNDCTL_DSP_SETSYNCRO:
3581 case SOUND_PCM_READ_FILTER:
3582 return -EINVAL;
3583 }
3584 return mixer_ioctl(s, cmd, arg);
3585}
3586
3587
3588static int cs4281_release(struct inode *inode, struct file *file)
3589{
3590 struct cs4281_state *s =
3591 (struct cs4281_state *) file->private_data;
3592
3593 CS_DBGOUT(CS_FUNCTION | CS_RELEASE, 2, printk(KERN_INFO
3594 "cs4281: cs4281_release(): inode=%p file=%p f_mode=%d\n",
3595 inode, file, file->f_mode));
3596
3597 VALIDATE_STATE(s);
3598
3599 if (file->f_mode & FMODE_WRITE) {
3600 drain_dac(s, file->f_flags & O_NONBLOCK);
3601 mutex_lock(&s->open_sem_dac);
3602 stop_dac(s);
3603 dealloc_dmabuf(s, &s->dma_dac);
3604 s->open_mode &= ~FMODE_WRITE;
3605 mutex_unlock(&s->open_sem_dac);
3606 wake_up(&s->open_wait_dac);
3607 }
3608 if (file->f_mode & FMODE_READ) {
3609 drain_adc(s, file->f_flags & O_NONBLOCK);
3610 mutex_lock(&s->open_sem_adc);
3611 stop_adc(s);
3612 dealloc_dmabuf(s, &s->dma_adc);
3613 s->open_mode &= ~FMODE_READ;
3614 mutex_unlock(&s->open_sem_adc);
3615 wake_up(&s->open_wait_adc);
3616 }
3617 return 0;
3618}
3619
3620static int cs4281_open(struct inode *inode, struct file *file)
3621{
3622 unsigned int minor = iminor(inode);
3623 struct cs4281_state *s=NULL;
3624 struct list_head *entry;
3625
3626 CS_DBGOUT(CS_FUNCTION | CS_OPEN, 2, printk(KERN_INFO
3627 "cs4281: cs4281_open(): inode=%p file=%p f_mode=0x%x\n",
3628 inode, file, file->f_mode));
3629
3630 list_for_each(entry, &cs4281_devs)
3631 {
3632 s = list_entry(entry, struct cs4281_state, list);
3633
3634 if (!((s->dev_audio ^ minor) & ~0xf))
3635 break;
3636 }
3637 if (entry == &cs4281_devs)
3638 return -ENODEV;
3639 if (!s) {
3640 CS_DBGOUT(CS_FUNCTION | CS_OPEN, 2, printk(KERN_INFO
3641 "cs4281: cs4281_open(): Error - unable to find audio state struct\n"));
3642 return -ENODEV;
3643 }
3644 VALIDATE_STATE(s);
3645 file->private_data = s;
3646
3647 // wait for device to become free
3648 if (!(file->f_mode & (FMODE_WRITE | FMODE_READ))) {
3649 CS_DBGOUT(CS_FUNCTION | CS_OPEN | CS_ERROR, 2, printk(KERN_INFO
3650 "cs4281: cs4281_open(): Error - must open READ and/or WRITE\n"));
3651 return -ENODEV;
3652 }
3653 if (file->f_mode & FMODE_WRITE) {
3654 mutex_lock(&s->open_sem_dac);
3655 while (s->open_mode & FMODE_WRITE) {
3656 if (file->f_flags & O_NONBLOCK) {
3657 mutex_unlock(&s->open_sem_dac);
3658 return -EBUSY;
3659 }
3660 mutex_unlock(&s->open_sem_dac);
3661 interruptible_sleep_on(&s->open_wait_dac);
3662
3663 if (signal_pending(current))
3664 return -ERESTARTSYS;
3665 mutex_lock(&s->open_sem_dac);
3666 }
3667 }
3668 if (file->f_mode & FMODE_READ) {
3669 mutex_lock(&s->open_sem_adc);
3670 while (s->open_mode & FMODE_READ) {
3671 if (file->f_flags & O_NONBLOCK) {
3672 mutex_unlock(&s->open_sem_adc);
3673 return -EBUSY;
3674 }
3675 mutex_unlock(&s->open_sem_adc);
3676 interruptible_sleep_on(&s->open_wait_adc);
3677
3678 if (signal_pending(current))
3679 return -ERESTARTSYS;
3680 mutex_lock(&s->open_sem_adc);
3681 }
3682 }
3683 s->open_mode |= file->f_mode & (FMODE_READ | FMODE_WRITE);
3684 if (file->f_mode & FMODE_READ) {
3685 s->prop_adc.fmt = AFMT_U8;
3686 s->prop_adc.fmt_original = s->prop_adc.fmt;
3687 s->prop_adc.channels = 1;
3688 s->prop_adc.rate = 8000;
3689 s->prop_adc.clkdiv = 96 | 0x80;
3690 s->conversion = 0;
3691 s->ena &= ~FMODE_READ;
3692 s->dma_adc.ossfragshift = s->dma_adc.ossmaxfrags =
3693 s->dma_adc.subdivision = 0;
3694 mutex_unlock(&s->open_sem_adc);
3695
3696 if (prog_dmabuf_adc(s)) {
3697 CS_DBGOUT(CS_OPEN | CS_ERROR, 2, printk(KERN_ERR
3698 "cs4281: adc Program dmabufs failed.\n"));
3699 cs4281_release(inode, file);
3700 return -ENOMEM;
3701 }
3702 prog_codec(s, CS_TYPE_ADC);
3703 }
3704 if (file->f_mode & FMODE_WRITE) {
3705 s->prop_dac.fmt = AFMT_U8;
3706 s->prop_dac.fmt_original = s->prop_dac.fmt;
3707 s->prop_dac.channels = 1;
3708 s->prop_dac.rate = 8000;
3709 s->prop_dac.clkdiv = 96 | 0x80;
3710 s->conversion = 0;
3711 s->ena &= ~FMODE_WRITE;
3712 s->dma_dac.ossfragshift = s->dma_dac.ossmaxfrags =
3713 s->dma_dac.subdivision = 0;
3714 mutex_unlock(&s->open_sem_dac);
3715
3716 if (prog_dmabuf_dac(s)) {
3717 CS_DBGOUT(CS_OPEN | CS_ERROR, 2, printk(KERN_ERR
3718 "cs4281: dac Program dmabufs failed.\n"));
3719 cs4281_release(inode, file);
3720 return -ENOMEM;
3721 }
3722 prog_codec(s, CS_TYPE_DAC);
3723 }
3724 CS_DBGOUT(CS_FUNCTION | CS_OPEN, 2,
3725 printk(KERN_INFO "cs4281: cs4281_open()- 0\n"));
3726 return nonseekable_open(inode, file);
3727}
3728
3729
3730// ******************************************************************************************
3731// Wave (audio) file operations struct.
3732// ******************************************************************************************
3733static /*const */ struct file_operations cs4281_audio_fops = {
3734 .owner = THIS_MODULE,
3735 .llseek = no_llseek,
3736 .read = cs4281_read,
3737 .write = cs4281_write,
3738 .poll = cs4281_poll,
3739 .ioctl = cs4281_ioctl,
3740 .mmap = cs4281_mmap,
3741 .open = cs4281_open,
3742 .release = cs4281_release,
3743};
3744
3745// ---------------------------------------------------------------------
3746
3747// hold spinlock for the following!
3748static void cs4281_handle_midi(struct cs4281_state *s)
3749{
3750 unsigned char ch;
3751 int wake;
3752 unsigned temp1;
3753
3754 wake = 0;
3755 while (!(readl(s->pBA0 + BA0_MIDSR) & 0x80)) {
3756 ch = readl(s->pBA0 + BA0_MIDRP);
3757 if (s->midi.icnt < MIDIINBUF) {
3758 s->midi.ibuf[s->midi.iwr] = ch;
3759 s->midi.iwr = (s->midi.iwr + 1) % MIDIINBUF;
3760 s->midi.icnt++;
3761 }
3762 wake = 1;
3763 }
3764 if (wake)
3765 wake_up(&s->midi.iwait);
3766 wake = 0;
3767 while (!(readl(s->pBA0 + BA0_MIDSR) & 0x40) && s->midi.ocnt > 0) {
3768 temp1 = (s->midi.obuf[s->midi.ord]) & 0x000000ff;
3769 writel(temp1, s->pBA0 + BA0_MIDWP);
3770 s->midi.ord = (s->midi.ord + 1) % MIDIOUTBUF;
3771 s->midi.ocnt--;
3772 if (s->midi.ocnt < MIDIOUTBUF - 16)
3773 wake = 1;
3774 }
3775 if (wake)
3776 wake_up(&s->midi.owait);
3777}
3778
3779
3780
3781static irqreturn_t cs4281_interrupt(int irq, void *dev_id, struct pt_regs *regs)
3782{
3783 struct cs4281_state *s = (struct cs4281_state *) dev_id;
3784 unsigned int temp1;
3785
3786 // fastpath out, to ease interrupt sharing
3787 temp1 = readl(s->pBA0 + BA0_HISR); // Get Int Status reg.
3788
3789 CS_DBGOUT(CS_INTERRUPT, 6, printk(KERN_INFO
3790 "cs4281: cs4281_interrupt() BA0_HISR=0x%.8x\n", temp1));
3791/*
3792* If not DMA or MIDI interrupt, then just return.
3793*/
3794 if (!(temp1 & (HISR_DMA0 | HISR_DMA1 | HISR_MIDI))) {
3795 writel(HICR_IEV | HICR_CHGM, s->pBA0 + BA0_HICR);
3796 CS_DBGOUT(CS_INTERRUPT, 9, printk(KERN_INFO
3797 "cs4281: cs4281_interrupt(): returning not cs4281 interrupt.\n"));
3798 return IRQ_NONE;
3799 }
3800
3801 if (temp1 & HISR_DMA0) // If play interrupt,
3802 readl(s->pBA0 + BA0_HDSR0); // clear the source.
3803
3804 if (temp1 & HISR_DMA1) // Same for play.
3805 readl(s->pBA0 + BA0_HDSR1);
3806 writel(HICR_IEV | HICR_CHGM, s->pBA0 + BA0_HICR); // Local EOI
3807
3808 spin_lock(&s->lock);
3809 cs4281_update_ptr(s,CS_TRUE);
3810 cs4281_handle_midi(s);
3811 spin_unlock(&s->lock);
3812 return IRQ_HANDLED;
3813}
3814
3815// **************************************************************************
3816
3817static void cs4281_midi_timer(unsigned long data)
3818{
3819 struct cs4281_state *s = (struct cs4281_state *) data;
3820 unsigned long flags;
3821
3822 spin_lock_irqsave(&s->lock, flags);
3823 cs4281_handle_midi(s);
3824 spin_unlock_irqrestore(&s->lock, flags);
3825 s->midi.timer.expires = jiffies + 1;
3826 add_timer(&s->midi.timer);
3827}
3828
3829
3830// ---------------------------------------------------------------------
3831
3832static ssize_t cs4281_midi_read(struct file *file, char __user *buffer,
3833 size_t count, loff_t * ppos)
3834{
3835 struct cs4281_state *s =
3836 (struct cs4281_state *) file->private_data;
3837 ssize_t ret;
3838 unsigned long flags;
3839 unsigned ptr;
3840 int cnt;
3841
3842 VALIDATE_STATE(s);
3843 if (!access_ok(VERIFY_WRITE, buffer, count))
3844 return -EFAULT;
3845 ret = 0;
3846 while (count > 0) {
3847 spin_lock_irqsave(&s->lock, flags);
3848 ptr = s->midi.ird;
3849 cnt = MIDIINBUF - ptr;
3850 if (s->midi.icnt < cnt)
3851 cnt = s->midi.icnt;
3852 spin_unlock_irqrestore(&s->lock, flags);
3853 if (cnt > count)
3854 cnt = count;
3855 if (cnt <= 0) {
3856 if (file->f_flags & O_NONBLOCK)
3857 return ret ? ret : -EAGAIN;
3858 interruptible_sleep_on(&s->midi.iwait);
3859 if (signal_pending(current))
3860 return ret ? ret : -ERESTARTSYS;
3861 continue;
3862 }
3863 if (copy_to_user(buffer, s->midi.ibuf + ptr, cnt))
3864 return ret ? ret : -EFAULT;
3865 ptr = (ptr + cnt) % MIDIINBUF;
3866 spin_lock_irqsave(&s->lock, flags);
3867 s->midi.ird = ptr;
3868 s->midi.icnt -= cnt;
3869 spin_unlock_irqrestore(&s->lock, flags);
3870 count -= cnt;
3871 buffer += cnt;
3872 ret += cnt;
3873 }
3874 return ret;
3875}
3876
3877
3878static ssize_t cs4281_midi_write(struct file *file, const char __user *buffer,
3879 size_t count, loff_t * ppos)
3880{
3881 struct cs4281_state *s =
3882 (struct cs4281_state *) file->private_data;
3883 ssize_t ret;
3884 unsigned long flags;
3885 unsigned ptr;
3886 int cnt;
3887
3888 VALIDATE_STATE(s);
3889 if (!access_ok(VERIFY_READ, buffer, count))
3890 return -EFAULT;
3891 ret = 0;
3892 while (count > 0) {
3893 spin_lock_irqsave(&s->lock, flags);
3894 ptr = s->midi.owr;
3895 cnt = MIDIOUTBUF - ptr;
3896 if (s->midi.ocnt + cnt > MIDIOUTBUF)
3897 cnt = MIDIOUTBUF - s->midi.ocnt;
3898 if (cnt <= 0)
3899 cs4281_handle_midi(s);
3900 spin_unlock_irqrestore(&s->lock, flags);
3901 if (cnt > count)
3902 cnt = count;
3903 if (cnt <= 0) {
3904 if (file->f_flags & O_NONBLOCK)
3905 return ret ? ret : -EAGAIN;
3906 interruptible_sleep_on(&s->midi.owait);
3907 if (signal_pending(current))
3908 return ret ? ret : -ERESTARTSYS;
3909 continue;
3910 }
3911 if (copy_from_user(s->midi.obuf + ptr, buffer, cnt))
3912 return ret ? ret : -EFAULT;
3913 ptr = (ptr + cnt) % MIDIOUTBUF;
3914 spin_lock_irqsave(&s->lock, flags);
3915 s->midi.owr = ptr;
3916 s->midi.ocnt += cnt;
3917 spin_unlock_irqrestore(&s->lock, flags);
3918 count -= cnt;
3919 buffer += cnt;
3920 ret += cnt;
3921 spin_lock_irqsave(&s->lock, flags);
3922 cs4281_handle_midi(s);
3923 spin_unlock_irqrestore(&s->lock, flags);
3924 }
3925 return ret;
3926}
3927
3928
3929static unsigned int cs4281_midi_poll(struct file *file,
3930 struct poll_table_struct *wait)
3931{
3932 struct cs4281_state *s =
3933 (struct cs4281_state *) file->private_data;
3934 unsigned long flags;
3935 unsigned int mask = 0;
3936
3937 VALIDATE_STATE(s);
3938 if (file->f_flags & FMODE_WRITE)
3939 poll_wait(file, &s->midi.owait, wait);
3940 if (file->f_flags & FMODE_READ)
3941 poll_wait(file, &s->midi.iwait, wait);
3942 spin_lock_irqsave(&s->lock, flags);
3943 if (file->f_flags & FMODE_READ) {
3944 if (s->midi.icnt > 0)
3945 mask |= POLLIN | POLLRDNORM;
3946 }
3947 if (file->f_flags & FMODE_WRITE) {
3948 if (s->midi.ocnt < MIDIOUTBUF)
3949 mask |= POLLOUT | POLLWRNORM;
3950 }
3951 spin_unlock_irqrestore(&s->lock, flags);
3952 return mask;
3953}
3954
3955
3956static int cs4281_midi_open(struct inode *inode, struct file *file)
3957{
3958 unsigned long flags, temp1;
3959 unsigned int minor = iminor(inode);
3960 struct cs4281_state *s=NULL;
3961 struct list_head *entry;
3962 list_for_each(entry, &cs4281_devs)
3963 {
3964 s = list_entry(entry, struct cs4281_state, list);
3965
3966 if (s->dev_midi == minor)
3967 break;
3968 }
3969
3970 if (entry == &cs4281_devs)
3971 return -ENODEV;
3972 if (!s)
3973 {
3974 CS_DBGOUT(CS_FUNCTION | CS_OPEN, 2, printk(KERN_INFO
3975 "cs4281: cs4281_open(): Error - unable to find audio state struct\n"));
3976 return -ENODEV;
3977 }
3978 VALIDATE_STATE(s);
3979 file->private_data = s;
3980 // wait for device to become free
3981 mutex_lock(&s->open_sem);
3982 while (s->open_mode & (file->f_mode << FMODE_MIDI_SHIFT)) {
3983 if (file->f_flags & O_NONBLOCK) {
3984 mutex_unlock(&s->open_sem);
3985 return -EBUSY;
3986 }
3987 mutex_unlock(&s->open_sem);
3988 interruptible_sleep_on(&s->open_wait);
3989 if (signal_pending(current))
3990 return -ERESTARTSYS;
3991 mutex_lock(&s->open_sem);
3992 }
3993 spin_lock_irqsave(&s->lock, flags);
3994 if (!(s->open_mode & (FMODE_MIDI_READ | FMODE_MIDI_WRITE))) {
3995 s->midi.ird = s->midi.iwr = s->midi.icnt = 0;
3996 s->midi.ord = s->midi.owr = s->midi.ocnt = 0;
3997 writel(1, s->pBA0 + BA0_MIDCR); // Reset the interface.
3998 writel(0, s->pBA0 + BA0_MIDCR); // Return to normal mode.
3999 s->midi.ird = s->midi.iwr = s->midi.icnt = 0;
4000 writel(0x0000000f, s->pBA0 + BA0_MIDCR); // Enable transmit, record, ints.
4001 temp1 = readl(s->pBA0 + BA0_HIMR);
4002 writel(temp1 & 0xffbfffff, s->pBA0 + BA0_HIMR); // Enable midi int. recognition.
4003 writel(HICR_IEV | HICR_CHGM, s->pBA0 + BA0_HICR); // Enable interrupts
4004 init_timer(&s->midi.timer);
4005 s->midi.timer.expires = jiffies + 1;
4006 s->midi.timer.data = (unsigned long) s;
4007 s->midi.timer.function = cs4281_midi_timer;
4008 add_timer(&s->midi.timer);
4009 }
4010 if (file->f_mode & FMODE_READ) {
4011 s->midi.ird = s->midi.iwr = s->midi.icnt = 0;
4012 }
4013 if (file->f_mode & FMODE_WRITE) {
4014 s->midi.ord = s->midi.owr = s->midi.ocnt = 0;
4015 }
4016 spin_unlock_irqrestore(&s->lock, flags);
4017 s->open_mode |=
4018 (file->
4019 f_mode << FMODE_MIDI_SHIFT) & (FMODE_MIDI_READ |
4020 FMODE_MIDI_WRITE);
4021 mutex_unlock(&s->open_sem);
4022 return nonseekable_open(inode, file);
4023}
4024
4025
4026static int cs4281_midi_release(struct inode *inode, struct file *file)
4027{
4028 struct cs4281_state *s =
4029 (struct cs4281_state *) file->private_data;
4030 DECLARE_WAITQUEUE(wait, current);
4031 unsigned long flags;
4032 unsigned count, tmo;
4033
4034 VALIDATE_STATE(s);
4035
4036 if (file->f_mode & FMODE_WRITE) {
4037 add_wait_queue(&s->midi.owait, &wait);
4038 for (;;) {
4039 set_current_state(TASK_INTERRUPTIBLE);
4040 spin_lock_irqsave(&s->lock, flags);
4041 count = s->midi.ocnt;
4042 spin_unlock_irqrestore(&s->lock, flags);
4043 if (count <= 0)
4044 break;
4045 if (signal_pending(current))
4046 break;
4047 if (file->f_flags & O_NONBLOCK) {
4048 remove_wait_queue(&s->midi.owait, &wait);
4049 current->state = TASK_RUNNING;
4050 return -EBUSY;
4051 }
4052 tmo = (count * HZ) / 3100;
4053 if (!schedule_timeout(tmo ? : 1) && tmo)
4054 printk(KERN_DEBUG
4055 "cs4281: midi timed out??\n");
4056 }
4057 remove_wait_queue(&s->midi.owait, &wait);
4058 current->state = TASK_RUNNING;
4059 }
4060 mutex_lock(&s->open_sem);
4061 s->open_mode &=
4062 (~(file->f_mode << FMODE_MIDI_SHIFT)) & (FMODE_MIDI_READ |
4063 FMODE_MIDI_WRITE);
4064 spin_lock_irqsave(&s->lock, flags);
4065 if (!(s->open_mode & (FMODE_MIDI_READ | FMODE_MIDI_WRITE))) {
4066 writel(0, s->pBA0 + BA0_MIDCR); // Disable Midi interrupts.
4067 del_timer(&s->midi.timer);
4068 }
4069 spin_unlock_irqrestore(&s->lock, flags);
4070 mutex_unlock(&s->open_sem);
4071 wake_up(&s->open_wait);
4072 return 0;
4073}
4074
4075// ******************************************************************************************
4076// Midi file operations struct.
4077// ******************************************************************************************
4078static /*const */ struct file_operations cs4281_midi_fops = {
4079 .owner = THIS_MODULE,
4080 .llseek = no_llseek,
4081 .read = cs4281_midi_read,
4082 .write = cs4281_midi_write,
4083 .poll = cs4281_midi_poll,
4084 .open = cs4281_midi_open,
4085 .release = cs4281_midi_release,
4086};
4087
4088
4089// ---------------------------------------------------------------------
4090
4091// maximum number of devices
4092#define NR_DEVICE 8 // Only eight devices supported currently.
4093
4094// ---------------------------------------------------------------------
4095
4096static struct initvol {
4097 int mixch;
4098 int vol;
4099} initvol[] __devinitdata = {
4100
4101 {
4102 SOUND_MIXER_WRITE_VOLUME, 0x4040}, {
4103 SOUND_MIXER_WRITE_PCM, 0x4040}, {
4104 SOUND_MIXER_WRITE_SYNTH, 0x4040}, {
4105 SOUND_MIXER_WRITE_CD, 0x4040}, {
4106 SOUND_MIXER_WRITE_LINE, 0x4040}, {
4107 SOUND_MIXER_WRITE_LINE1, 0x4040}, {
4108 SOUND_MIXER_WRITE_RECLEV, 0x0000}, {
4109 SOUND_MIXER_WRITE_SPEAKER, 0x4040}, {
4110 SOUND_MIXER_WRITE_MIC, 0x0000}
4111};
4112
4113
4114#ifndef NOT_CS4281_PM
4115static void __devinit cs4281_BuildFIFO(
4116 struct cs4281_pipeline *p,
4117 struct cs4281_state *s)
4118{
4119 switch(p->number)
4120 {
4121 case 0: /* playback */
4122 {
4123 p->u32FCRnAddress = BA0_FCR0;
4124 p->u32FSICnAddress = BA0_FSIC0;
4125 p->u32FPDRnAddress = BA0_FPDR0;
4126 break;
4127 }
4128 case 1: /* capture */
4129 {
4130 p->u32FCRnAddress = BA0_FCR1;
4131 p->u32FSICnAddress = BA0_FSIC1;
4132 p->u32FPDRnAddress = BA0_FPDR1;
4133 break;
4134 }
4135
4136 case 2:
4137 {
4138 p->u32FCRnAddress = BA0_FCR2;
4139 p->u32FSICnAddress = BA0_FSIC2;
4140 p->u32FPDRnAddress = BA0_FPDR2;
4141 break;
4142 }
4143 case 3:
4144 {
4145 p->u32FCRnAddress = BA0_FCR3;
4146 p->u32FSICnAddress = BA0_FSIC3;
4147 p->u32FPDRnAddress = BA0_FPDR3;
4148 break;
4149 }
4150 default:
4151 break;
4152 }
4153 //
4154 // first read the hardware to initialize the member variables
4155 //
4156 p->u32FCRnValue = readl(s->pBA0 + p->u32FCRnAddress);
4157 p->u32FSICnValue = readl(s->pBA0 + p->u32FSICnAddress);
4158 p->u32FPDRnValue = readl(s->pBA0 + p->u32FPDRnAddress);
4159
4160}
4161
4162static void __devinit cs4281_BuildDMAengine(
4163 struct cs4281_pipeline *p,
4164 struct cs4281_state *s)
4165{
4166/*
4167* initialize all the addresses of this pipeline dma info.
4168*/
4169 switch(p->number)
4170 {
4171 case 0: /* playback */
4172 {
4173 p->u32DBAnAddress = BA0_DBA0;
4174 p->u32DCAnAddress = BA0_DCA0;
4175 p->u32DBCnAddress = BA0_DBC0;
4176 p->u32DCCnAddress = BA0_DCC0;
4177 p->u32DMRnAddress = BA0_DMR0;
4178 p->u32DCRnAddress = BA0_DCR0;
4179 p->u32HDSRnAddress = BA0_HDSR0;
4180 break;
4181 }
4182
4183 case 1: /* capture */
4184 {
4185 p->u32DBAnAddress = BA0_DBA1;
4186 p->u32DCAnAddress = BA0_DCA1;
4187 p->u32DBCnAddress = BA0_DBC1;
4188 p->u32DCCnAddress = BA0_DCC1;
4189 p->u32DMRnAddress = BA0_DMR1;
4190 p->u32DCRnAddress = BA0_DCR1;
4191 p->u32HDSRnAddress = BA0_HDSR1;
4192 break;
4193 }
4194
4195 case 2:
4196 {
4197 p->u32DBAnAddress = BA0_DBA2;
4198 p->u32DCAnAddress = BA0_DCA2;
4199 p->u32DBCnAddress = BA0_DBC2;
4200 p->u32DCCnAddress = BA0_DCC2;
4201 p->u32DMRnAddress = BA0_DMR2;
4202 p->u32DCRnAddress = BA0_DCR2;
4203 p->u32HDSRnAddress = BA0_HDSR2;
4204 break;
4205 }
4206
4207 case 3:
4208 {
4209 p->u32DBAnAddress = BA0_DBA3;
4210 p->u32DCAnAddress = BA0_DCA3;
4211 p->u32DBCnAddress = BA0_DBC3;
4212 p->u32DCCnAddress = BA0_DCC3;
4213 p->u32DMRnAddress = BA0_DMR3;
4214 p->u32DCRnAddress = BA0_DCR3;
4215 p->u32HDSRnAddress = BA0_HDSR3;
4216 break;
4217 }
4218 default:
4219 break;
4220 }
4221
4222//
4223// Initialize the dma values for this pipeline
4224//
4225 p->u32DBAnValue = readl(s->pBA0 + p->u32DBAnAddress);
4226 p->u32DBCnValue = readl(s->pBA0 + p->u32DBCnAddress);
4227 p->u32DMRnValue = readl(s->pBA0 + p->u32DMRnAddress);
4228 p->u32DCRnValue = readl(s->pBA0 + p->u32DCRnAddress);
4229
4230}
4231
4232static void __devinit cs4281_InitPM(struct cs4281_state *s)
4233{
4234 int i;
4235 struct cs4281_pipeline *p;
4236
4237 for(i=0;i<CS4281_NUMBER_OF_PIPELINES;i++)
4238 {
4239 p = &s->pl[i];
4240 p->number = i;
4241 cs4281_BuildDMAengine(p,s);
4242 cs4281_BuildFIFO(p,s);
4243 /*
4244 * currently only 2 pipelines are used
4245 * so, only set the valid bit on the playback and capture.
4246 */
4247 if( (i == CS4281_PLAYBACK_PIPELINE_NUMBER) ||
4248 (i == CS4281_CAPTURE_PIPELINE_NUMBER))
4249 p->flags |= CS4281_PIPELINE_VALID;
4250 }
4251 s->pm.u32SSPM_BITS = 0x7e; /* rev c, use 0x7c for rev a or b */
4252}
4253#endif
4254
4255static int __devinit cs4281_probe(struct pci_dev *pcidev,
4256 const struct pci_device_id *pciid)
4257{
4258 struct cs4281_state *s;
4259 dma_addr_t dma_mask;
4260 mm_segment_t fs;
4261 int i, val;
4262 unsigned int temp1, temp2;
4263
4264 CS_DBGOUT(CS_FUNCTION | CS_INIT, 2,
4265 printk(KERN_INFO "cs4281: probe()+\n"));
4266
4267 if (pci_enable_device(pcidev)) {
4268 CS_DBGOUT(CS_INIT | CS_ERROR, 1, printk(KERN_ERR
4269 "cs4281: pci_enable_device() failed\n"));
4270 return -1;
4271 }
4272 if (!(pci_resource_flags(pcidev, 0) & IORESOURCE_MEM) ||
4273 !(pci_resource_flags(pcidev, 1) & IORESOURCE_MEM)) {
4274 CS_DBGOUT(CS_ERROR, 1, printk(KERN_ERR
4275 "cs4281: probe()- Memory region not assigned\n"));
4276 return -ENODEV;
4277 }
4278 if (pcidev->irq == 0) {
4279 CS_DBGOUT(CS_ERROR, 1, printk(KERN_ERR
4280 "cs4281: probe() IRQ not assigned\n"));
4281 return -ENODEV;
4282 }
4283 dma_mask = 0xffffffff; /* this enables playback and recording */
4284 i = pci_set_dma_mask(pcidev, dma_mask);
4285 if (i) {
4286 CS_DBGOUT(CS_ERROR, 1, printk(KERN_ERR
4287 "cs4281: probe() architecture does not support 32bit PCI busmaster DMA\n"));
4288 return i;
4289 }
4290 if (!(s = kmalloc(sizeof(struct cs4281_state), GFP_KERNEL))) {
4291 CS_DBGOUT(CS_ERROR, 1, printk(KERN_ERR
4292 "cs4281: probe() no memory for state struct.\n"));
4293 return -1;
4294 }
4295 memset(s, 0, sizeof(struct cs4281_state));
4296 init_waitqueue_head(&s->dma_adc.wait);
4297 init_waitqueue_head(&s->dma_dac.wait);
4298 init_waitqueue_head(&s->open_wait);
4299 init_waitqueue_head(&s->open_wait_adc);
4300 init_waitqueue_head(&s->open_wait_dac);
4301 init_waitqueue_head(&s->midi.iwait);
4302 init_waitqueue_head(&s->midi.owait);
4303 mutex_init(&s->open_sem);
4304 mutex_init(&s->open_sem_adc);
4305 mutex_init(&s->open_sem_dac);
4306 spin_lock_init(&s->lock);
4307 s->pBA0phys = pci_resource_start(pcidev, 0);
4308 s->pBA1phys = pci_resource_start(pcidev, 1);
4309
4310 /* Convert phys to linear. */
4311 s->pBA0 = ioremap_nocache(s->pBA0phys, 4096);
4312 if (!s->pBA0) {
4313 CS_DBGOUT(CS_ERROR | CS_INIT, 1, printk(KERN_ERR
4314 "cs4281: BA0 I/O mapping failed. Skipping part.\n"));
4315 goto err_free;
4316 }
4317 s->pBA1 = ioremap_nocache(s->pBA1phys, 65536);
4318 if (!s->pBA1) {
4319 CS_DBGOUT(CS_ERROR | CS_INIT, 1, printk(KERN_ERR
4320 "cs4281: BA1 I/O mapping failed. Skipping part.\n"));
4321 goto err_unmap;
4322 }
4323
4324 temp1 = readl(s->pBA0 + BA0_PCICFG00);
4325 temp2 = readl(s->pBA0 + BA0_PCICFG04);
4326
4327 CS_DBGOUT(CS_INIT, 2,
4328 printk(KERN_INFO
4329 "cs4281: probe() BA0=0x%.8x BA1=0x%.8x pBA0=%p pBA1=%p \n",
4330 (unsigned) temp1, (unsigned) temp2, s->pBA0, s->pBA1));
4331 CS_DBGOUT(CS_INIT, 2,
4332 printk(KERN_INFO
4333 "cs4281: probe() pBA0phys=0x%.8x pBA1phys=0x%.8x\n",
4334 (unsigned) s->pBA0phys, (unsigned) s->pBA1phys));
4335
4336#ifndef NOT_CS4281_PM
4337 s->pm.flags = CS4281_PM_IDLE;
4338#endif
4339 temp1 = cs4281_hw_init(s);
4340 if (temp1) {
4341 CS_DBGOUT(CS_ERROR | CS_INIT, 1, printk(KERN_ERR
4342 "cs4281: cs4281_hw_init() failed. Skipping part.\n"));
4343 goto err_irq;
4344 }
4345 s->magic = CS4281_MAGIC;
4346 s->pcidev = pcidev;
4347 s->irq = pcidev->irq;
4348 if (request_irq
4349 (s->irq, cs4281_interrupt, IRQF_SHARED, "Crystal CS4281", s)) {
4350 CS_DBGOUT(CS_INIT | CS_ERROR, 1,
4351 printk(KERN_ERR "cs4281: irq %u in use\n", s->irq));
4352 goto err_irq;
4353 }
4354 if ((s->dev_audio = register_sound_dsp(&cs4281_audio_fops, -1)) <
4355 0) {
4356 CS_DBGOUT(CS_INIT | CS_ERROR, 1, printk(KERN_ERR
4357 "cs4281: probe() register_sound_dsp() failed.\n"));
4358 goto err_dev1;
4359 }
4360 if ((s->dev_mixer = register_sound_mixer(&cs4281_mixer_fops, -1)) <
4361 0) {
4362 CS_DBGOUT(CS_INIT | CS_ERROR, 1, printk(KERN_ERR
4363 "cs4281: probe() register_sound_mixer() failed.\n"));
4364 goto err_dev2;
4365 }
4366 if ((s->dev_midi = register_sound_midi(&cs4281_midi_fops, -1)) < 0) {
4367 CS_DBGOUT(CS_INIT | CS_ERROR, 1, printk(KERN_ERR
4368 "cs4281: probe() register_sound_midi() failed.\n"));
4369 goto err_dev3;
4370 }
4371#ifndef NOT_CS4281_PM
4372 cs4281_InitPM(s);
4373 s->pm.flags |= CS4281_PM_NOT_REGISTERED;
4374#endif
4375
4376 pci_set_master(pcidev); // enable bus mastering
4377
4378 fs = get_fs();
4379 set_fs(KERNEL_DS);
4380 val = SOUND_MASK_LINE;
4381 mixer_ioctl(s, SOUND_MIXER_WRITE_RECSRC, (unsigned long) &val);
4382 for (i = 0; i < sizeof(initvol) / sizeof(initvol[0]); i++) {
4383 val = initvol[i].vol;
4384 mixer_ioctl(s, initvol[i].mixch, (unsigned long) &val);
4385 }
4386 val = 1; // enable mic preamp
4387 mixer_ioctl(s, SOUND_MIXER_PRIVATE1, (unsigned long) &val);
4388 set_fs(fs);
4389
4390 pci_set_drvdata(pcidev, s);
4391 list_add(&s->list, &cs4281_devs);
4392 CS_DBGOUT(CS_INIT | CS_FUNCTION, 2, printk(KERN_INFO
4393 "cs4281: probe()- device allocated successfully\n"));
4394 return 0;
4395
4396 err_dev3:
4397 unregister_sound_mixer(s->dev_mixer);
4398 err_dev2:
4399 unregister_sound_dsp(s->dev_audio);
4400 err_dev1:
4401 free_irq(s->irq, s);
4402 err_irq:
4403 iounmap(s->pBA1);
4404 err_unmap:
4405 iounmap(s->pBA0);
4406 err_free:
4407 kfree(s);
4408
4409 CS_DBGOUT(CS_INIT | CS_ERROR, 1, printk(KERN_INFO
4410 "cs4281: probe()- no device allocated\n"));
4411 return -ENODEV;
4412} // probe_cs4281
4413
4414
4415// ---------------------------------------------------------------------
4416
4417static void __devexit cs4281_remove(struct pci_dev *pci_dev)
4418{
4419 struct cs4281_state *s = pci_get_drvdata(pci_dev);
4420 // stop DMA controller
4421 synchronize_irq(s->irq);
4422 free_irq(s->irq, s);
4423 unregister_sound_dsp(s->dev_audio);
4424 unregister_sound_mixer(s->dev_mixer);
4425 unregister_sound_midi(s->dev_midi);
4426 iounmap(s->pBA1);
4427 iounmap(s->pBA0);
4428 pci_set_drvdata(pci_dev,NULL);
4429 list_del(&s->list);
4430 kfree(s);
4431 CS_DBGOUT(CS_INIT | CS_FUNCTION, 2, printk(KERN_INFO
4432 "cs4281: cs4281_remove()-: remove successful\n"));
4433}
4434
4435static struct pci_device_id cs4281_pci_tbl[] = {
4436 {
4437 .vendor = PCI_VENDOR_ID_CIRRUS,
4438 .device = PCI_DEVICE_ID_CRYSTAL_CS4281,
4439 .subvendor = PCI_ANY_ID,
4440 .subdevice = PCI_ANY_ID,
4441 },
4442 { 0, },
4443};
4444
4445MODULE_DEVICE_TABLE(pci, cs4281_pci_tbl);
4446
4447static struct pci_driver cs4281_pci_driver = {
4448 .name = "cs4281",
4449 .id_table = cs4281_pci_tbl,
4450 .probe = cs4281_probe,
4451 .remove = __devexit_p(cs4281_remove),
4452 .suspend = CS4281_SUSPEND_TBL,
4453 .resume = CS4281_RESUME_TBL,
4454};
4455
4456static int __init cs4281_init_module(void)
4457{
4458 int rtn = 0;
4459 CS_DBGOUT(CS_INIT | CS_FUNCTION, 2, printk(KERN_INFO
4460 "cs4281: cs4281_init_module()+ \n"));
4461 printk(KERN_INFO "cs4281: version v%d.%02d.%d time " __TIME__ " "
4462 __DATE__ "\n", CS4281_MAJOR_VERSION, CS4281_MINOR_VERSION,
4463 CS4281_ARCH);
4464 rtn = pci_register_driver(&cs4281_pci_driver);
4465
4466 CS_DBGOUT(CS_INIT | CS_FUNCTION, 2,
4467 printk(KERN_INFO "cs4281: cs4281_init_module()- (%d)\n",rtn));
4468 return rtn;
4469}
4470
4471static void __exit cs4281_cleanup_module(void)
4472{
4473 pci_unregister_driver(&cs4281_pci_driver);
4474 CS_DBGOUT(CS_INIT | CS_FUNCTION, 2,
4475 printk(KERN_INFO "cs4281: cleanup_cs4281() finished\n"));
4476}
4477// ---------------------------------------------------------------------
4478
4479MODULE_AUTHOR("gw boynton, audio@crystal.cirrus.com");
4480MODULE_DESCRIPTION("Cirrus Logic CS4281 Driver");
4481MODULE_LICENSE("GPL");
4482
4483// ---------------------------------------------------------------------
4484
4485module_init(cs4281_init_module);
4486module_exit(cs4281_cleanup_module);
4487
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-27 18:24:08 -0500