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ath9k: prevent aggregation session deadlocks
[linux/fpc-iii.git] / sound / oss / swarm_cs4297a.c
blob7d8803a00b79cc85c06b3566ac909293caf4d69d
1 /*******************************************************************************
2 *
3 * "swarm_cs4297a.c" -- Cirrus Logic-Crystal CS4297a linux audio driver.
4 *
5 * Copyright (C) 2001 Broadcom Corporation.
6 * Copyright (C) 2000,2001 Cirrus Logic Corp.
7 * -- adapted from drivers by Thomas Sailer,
8 * -- but don't bug him; Problems should go to:
9 * -- tom woller (twoller@crystal.cirrus.com) or
10 * (audio@crystal.cirrus.com).
11 * -- adapted from cs4281 PCI driver for cs4297a on
12 * BCM1250 Synchronous Serial interface
13 * (Kip Walker, Broadcom Corp.)
14 * Copyright (C) 2004 Maciej W. Rozycki
15 * Copyright (C) 2005 Ralf Baechle (ralf@linux-mips.org)
16 *
17 * This program is free software; you can redistribute it and/or modify
18 * it under the terms of the GNU General Public License as published by
19 * the Free Software Foundation; either version 2 of the License, or
20 * (at your option) any later version.
21 *
22 * This program is distributed in the hope that it will be useful,
23 * but WITHOUT ANY WARRANTY; without even the implied warranty of
24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25 * GNU General Public License for more details.
26 *
27 * You should have received a copy of the GNU General Public License
28 * along with this program; if not, write to the Free Software
29 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
30 *
31 * Module command line parameters:
32 * none
33 *
34 * Supported devices:
35 * /dev/dsp standard /dev/dsp device, (mostly) OSS compatible
36 * /dev/mixer standard /dev/mixer device, (mostly) OSS compatible
37 * /dev/midi simple MIDI UART interface, no ioctl
38 *
39 * Modification History
40 * 08/20/00 trw - silence and no stopping DAC until release
41 * 08/23/00 trw - added CS_DBG statements, fix interrupt hang issue on DAC stop.
42 * 09/18/00 trw - added 16bit only record with conversion
43 * 09/24/00 trw - added Enhanced Full duplex (separate simultaneous
44 * capture/playback rates)
45 * 10/03/00 trw - fixed mmap (fixed GRECORD and the XMMS mmap test plugin
46 * libOSSm.so)
47 * 10/11/00 trw - modified for 2.4.0-test9 kernel enhancements (NR_MAP removal)
48 * 11/03/00 trw - fixed interrupt loss/stutter, added debug.
49 * 11/10/00 bkz - added __devinit to cs4297a_hw_init()
50 * 11/10/00 trw - fixed SMP and capture spinlock hang.
51 * 12/04/00 trw - cleaned up CSDEBUG flags and added "defaultorder" moduleparm.
52 * 12/05/00 trw - fixed polling (myth2), and added underrun swptr fix.
53 * 12/08/00 trw - added PM support.
54 * 12/14/00 trw - added wrapper code, builds under 2.4.0, 2.2.17-20, 2.2.17-8
55 * (RH/Dell base), 2.2.18, 2.2.12. cleaned up code mods by ident.
56 * 12/19/00 trw - added PM support for 2.2 base (apm_callback). other PM cleanup.
57 * 12/21/00 trw - added fractional "defaultorder" inputs. if >100 then use
58 * defaultorder-100 as power of 2 for the buffer size. example:
59 * 106 = 2^(106-100) = 2^6 = 64 bytes for the buffer size.
60 *
61 *******************************************************************************/
62
63 #include <linux/list.h>
64 #include <linux/module.h>
65 #include <linux/string.h>
66 #include <linux/ioport.h>
67 #include <linux/sched.h>
68 #include <linux/delay.h>
69 #include <linux/sound.h>
70 #include <linux/slab.h>
71 #include <linux/soundcard.h>
72 #include <linux/pci.h>
73 #include <linux/bitops.h>
74 #include <linux/interrupt.h>
75 #include <linux/init.h>
76 #include <linux/poll.h>
77 #include <linux/mutex.h>
78 #include <linux/kernel.h>
79
80 #include <asm/byteorder.h>
81 #include <asm/dma.h>
82 #include <asm/io.h>
83 #include <asm/uaccess.h>
84
85 #include <asm/sibyte/sb1250_regs.h>
86 #include <asm/sibyte/sb1250_int.h>
87 #include <asm/sibyte/sb1250_dma.h>
88 #include <asm/sibyte/sb1250_scd.h>
89 #include <asm/sibyte/sb1250_syncser.h>
90 #include <asm/sibyte/sb1250_mac.h>
91 #include <asm/sibyte/sb1250.h>
92
93 struct cs4297a_state;
94
95 static DEFINE_MUTEX(swarm_cs4297a_mutex);
96 static void stop_dac(struct cs4297a_state *s);
97 static void stop_adc(struct cs4297a_state *s);
98 static void start_dac(struct cs4297a_state *s);
99 static void start_adc(struct cs4297a_state *s);
100 #undef OSS_DOCUMENTED_MIXER_SEMANTICS
101
102 // ---------------------------------------------------------------------
103
104 #define CS4297a_MAGIC 0xf00beef1
105
106 // buffer order determines the size of the dma buffer for the driver.
107 // under Linux, a smaller buffer allows more responsiveness from many of the
108 // applications (e.g. games). A larger buffer allows some of the apps (esound)
109 // to not underrun the dma buffer as easily. As default, use 32k (order=3)
110 // rather than 64k as some of the games work more responsively.
111 // log base 2( buff sz = 32k).
112
113 //
114 // Turn on/off debugging compilation by commenting out "#define CSDEBUG"
115 //
116 #define CSDEBUG 0
117 #if CSDEBUG
118 #define CSDEBUG_INTERFACE 1
119 #else
120 #undef CSDEBUG_INTERFACE
121 #endif
122 //
123 // cs_debugmask areas
124 //
125 #define CS_INIT 0x00000001 // initialization and probe functions
126 #define CS_ERROR 0x00000002 // tmp debugging bit placeholder
127 #define CS_INTERRUPT 0x00000004 // interrupt handler (separate from all other)
128 #define CS_FUNCTION 0x00000008 // enter/leave functions
129 #define CS_WAVE_WRITE 0x00000010 // write information for wave
130 #define CS_WAVE_READ 0x00000020 // read information for wave
131 #define CS_AC97 0x00000040 // AC97 register access
132 #define CS_DESCR 0x00000080 // descriptor management
133 #define CS_OPEN 0x00000400 // all open functions in the driver
134 #define CS_RELEASE 0x00000800 // all release functions in the driver
135 #define CS_PARMS 0x00001000 // functional and operational parameters
136 #define CS_IOCTL 0x00002000 // ioctl (non-mixer)
137 #define CS_TMP 0x10000000 // tmp debug mask bit
138
139 //
140 // CSDEBUG is usual mode is set to 1, then use the
141 // cs_debuglevel and cs_debugmask to turn on or off debugging.
142 // Debug level of 1 has been defined to be kernel errors and info
143 // that should be printed on any released driver.
144 //
145 #if CSDEBUG
146 #define CS_DBGOUT(mask,level,x) if((cs_debuglevel >= (level)) && ((mask) & cs_debugmask) ) {x;}
147 #else
148 #define CS_DBGOUT(mask,level,x)
149 #endif
150
151 #if CSDEBUG
152 static unsigned long cs_debuglevel = 4; // levels range from 1-9
153 static unsigned long cs_debugmask = CS_INIT /*| CS_IOCTL*/;
154 module_param(cs_debuglevel, int, 0);
155 module_param(cs_debugmask, int, 0);
156 #endif
157 #define CS_TRUE 1
158 #define CS_FALSE 0
159
160 #define CS_TYPE_ADC 0
161 #define CS_TYPE_DAC 1
162
163 #define SER_BASE (A_SER_BASE_1 + KSEG1)
164 #define SS_CSR(t) (SER_BASE+t)
165 #define SS_TXTBL(t) (SER_BASE+R_SER_TX_TABLE_BASE+(t*8))
166 #define SS_RXTBL(t) (SER_BASE+R_SER_RX_TABLE_BASE+(t*8))
167
168 #define FRAME_BYTES 32
169 #define FRAME_SAMPLE_BYTES 4
170
171 /* Should this be variable? */
172 #define SAMPLE_BUF_SIZE (16*1024)
173 #define SAMPLE_FRAME_COUNT (SAMPLE_BUF_SIZE / FRAME_SAMPLE_BYTES)
174 /* The driver can explode/shrink the frames to/from a smaller sample
175 buffer */
176 #define DMA_BLOAT_FACTOR 1
177 #define DMA_DESCR (SAMPLE_FRAME_COUNT / DMA_BLOAT_FACTOR)
178 #define DMA_BUF_SIZE (DMA_DESCR * FRAME_BYTES)
179
180 /* Use the maxmium count (255 == 5.1 ms between interrupts) */
181 #define DMA_INT_CNT ((1 << S_DMA_INT_PKTCNT) - 1)
182
183 /* Figure this out: how many TX DMAs ahead to schedule a reg access */
184 #define REG_LATENCY 150
185
186 #define FRAME_TX_US 20
187
188 #define SERDMA_NEXTBUF(d,f) (((d)->f+1) % (d)->ringsz)
189
190 static const char invalid_magic[] =
191 KERN_CRIT "cs4297a: invalid magic value\n";
192
193 #define VALIDATE_STATE(s) \
194 ({ \
195 if (!(s) || (s)->magic != CS4297a_MAGIC) { \
196 printk(invalid_magic); \
197 return -ENXIO; \
198 } \
199 })
200
201 /* AC97 registers */
202 #define AC97_MASTER_VOL_STEREO 0x0002 /* Line Out */
203 #define AC97_PCBEEP_VOL 0x000a /* none */
204 #define AC97_PHONE_VOL 0x000c /* TAD Input (mono) */
205 #define AC97_MIC_VOL 0x000e /* MIC Input (mono) */
206 #define AC97_LINEIN_VOL 0x0010 /* Line Input (stereo) */
207 #define AC97_CD_VOL 0x0012 /* CD Input (stereo) */
208 #define AC97_AUX_VOL 0x0016 /* Aux Input (stereo) */
209 #define AC97_PCMOUT_VOL 0x0018 /* Wave Output (stereo) */
210 #define AC97_RECORD_SELECT 0x001a /* */
211 #define AC97_RECORD_GAIN 0x001c
212 #define AC97_GENERAL_PURPOSE 0x0020
213 #define AC97_3D_CONTROL 0x0022
214 #define AC97_POWER_CONTROL 0x0026
215 #define AC97_VENDOR_ID1 0x007c
216
217 struct list_head cs4297a_devs = { &cs4297a_devs, &cs4297a_devs };
218
219 typedef struct serdma_descr_s {
220 u64 descr_a;
221 u64 descr_b;
222 } serdma_descr_t;
223
224 typedef unsigned long paddr_t;
225
226 typedef struct serdma_s {
227 unsigned ringsz;
228 serdma_descr_t *descrtab;
229 serdma_descr_t *descrtab_end;
230 paddr_t descrtab_phys;
231
232 serdma_descr_t *descr_add;
233 serdma_descr_t *descr_rem;
234
235 u64 *dma_buf; // buffer for DMA contents (frames)
236 paddr_t dma_buf_phys;
237 u16 *sample_buf; // tmp buffer for sample conversions
238 u16 *sb_swptr;
239 u16 *sb_hwptr;
240 u16 *sb_end;
241
242 dma_addr_t dmaaddr;
243 // unsigned buforder; // Log base 2 of 'dma_buf' size in bytes..
244 unsigned numfrag; // # of 'fragments' in the buffer.
245 unsigned fragshift; // Log base 2 of fragment size.
246 unsigned hwptr, swptr;
247 unsigned total_bytes; // # bytes process since open.
248 unsigned blocks; // last returned blocks value GETOPTR
249 unsigned wakeup; // interrupt occurred on block
250 int count;
251 unsigned underrun; // underrun flag
252 unsigned error; // over/underrun
253 wait_queue_head_t wait;
254 wait_queue_head_t reg_wait;
255 // redundant, but makes calculations easier
256 unsigned fragsize; // 2**fragshift..
257 unsigned sbufsz; // 2**buforder.
258 unsigned fragsamples;
259 // OSS stuff
260 unsigned mapped:1; // Buffer mapped in cs4297a_mmap()?
261 unsigned ready:1; // prog_dmabuf_dac()/adc() successful?
262 unsigned endcleared:1;
263 unsigned type:1; // adc or dac buffer (CS_TYPE_XXX)
264 unsigned ossfragshift;
265 int ossmaxfrags;
266 unsigned subdivision;
267 } serdma_t;
268
269 struct cs4297a_state {
270 // magic
271 unsigned int magic;
272
273 struct list_head list;
274
275 // soundcore stuff
276 int dev_audio;
277 int dev_mixer;
278
279 // hardware resources
280 unsigned int irq;
281
282 struct {
283 unsigned int rx_ovrrn; /* FIFO */
284 unsigned int rx_overflow; /* staging buffer */
285 unsigned int tx_underrun;
286 unsigned int rx_bad;
287 unsigned int rx_good;
288 } stats;
289
290 // mixer registers
291 struct {
292 unsigned short vol[10];
293 unsigned int recsrc;
294 unsigned int modcnt;
295 unsigned short micpreamp;
296 } mix;
297
298 // wave stuff
299 struct properties {
300 unsigned fmt;
301 unsigned fmt_original; // original requested format
302 unsigned channels;
303 unsigned rate;
304 } prop_dac, prop_adc;
305 unsigned conversion:1; // conversion from 16 to 8 bit in progress
306 unsigned ena;
307 spinlock_t lock;
308 struct mutex open_mutex;
309 struct mutex open_sem_adc;
310 struct mutex open_sem_dac;
311 fmode_t open_mode;
312 wait_queue_head_t open_wait;
313 wait_queue_head_t open_wait_adc;
314 wait_queue_head_t open_wait_dac;
315
316 dma_addr_t dmaaddr_sample_buf;
317 unsigned buforder_sample_buf; // Log base 2 of 'dma_buf' size in bytes..
318
319 serdma_t dma_dac, dma_adc;
320
321 volatile u16 read_value;
322 volatile u16 read_reg;
323 volatile u64 reg_request;
324 };
325
326 #if 1
327 #define prog_codec(a,b)
328 #define dealloc_dmabuf(a,b);
329 #endif
330
331 static int prog_dmabuf_adc(struct cs4297a_state *s)
332 {
333 s->dma_adc.ready = 1;
334 return 0;
335 }
336
337
338 static int prog_dmabuf_dac(struct cs4297a_state *s)
339 {
340 s->dma_dac.ready = 1;
341 return 0;
342 }
343
344 static void clear_advance(void *buf, unsigned bsize, unsigned bptr,
345 unsigned len, unsigned char c)
346 {
347 if (bptr + len > bsize) {
348 unsigned x = bsize - bptr;
349 memset(((char *) buf) + bptr, c, x);
350 bptr = 0;
351 len -= x;
352 }
353 CS_DBGOUT(CS_WAVE_WRITE, 4, printk(KERN_INFO
354 "cs4297a: clear_advance(): memset %d at 0x%.8x for %d size \n",
355 (unsigned)c, (unsigned)((char *) buf) + bptr, len));
356 memset(((char *) buf) + bptr, c, len);
357 }
358
359 #if CSDEBUG
360
361 // DEBUG ROUTINES
362
363 #define SOUND_MIXER_CS_GETDBGLEVEL _SIOWR('M',120, int)
364 #define SOUND_MIXER_CS_SETDBGLEVEL _SIOWR('M',121, int)
365 #define SOUND_MIXER_CS_GETDBGMASK _SIOWR('M',122, int)
366 #define SOUND_MIXER_CS_SETDBGMASK _SIOWR('M',123, int)
367
368 static void cs_printioctl(unsigned int x)
369 {
370 unsigned int i;
371 unsigned char vidx;
372 // Index of mixtable1[] member is Device ID
373 // and must be <= SOUND_MIXER_NRDEVICES.
374 // Value of array member is index into s->mix.vol[]
375 static const unsigned char mixtable1[SOUND_MIXER_NRDEVICES] = {
376 [SOUND_MIXER_PCM] = 1, // voice
377 [SOUND_MIXER_LINE1] = 2, // AUX
378 [SOUND_MIXER_CD] = 3, // CD
379 [SOUND_MIXER_LINE] = 4, // Line
380 [SOUND_MIXER_SYNTH] = 5, // FM
381 [SOUND_MIXER_MIC] = 6, // Mic
382 [SOUND_MIXER_SPEAKER] = 7, // Speaker
383 [SOUND_MIXER_RECLEV] = 8, // Recording level
384 [SOUND_MIXER_VOLUME] = 9 // Master Volume
385 };
386
387 switch (x) {
388 case SOUND_MIXER_CS_GETDBGMASK:
389 CS_DBGOUT(CS_IOCTL, 4,
390 printk("SOUND_MIXER_CS_GETDBGMASK:\n"));
391 break;
392 case SOUND_MIXER_CS_GETDBGLEVEL:
393 CS_DBGOUT(CS_IOCTL, 4,
394 printk("SOUND_MIXER_CS_GETDBGLEVEL:\n"));
395 break;
396 case SOUND_MIXER_CS_SETDBGMASK:
397 CS_DBGOUT(CS_IOCTL, 4,
398 printk("SOUND_MIXER_CS_SETDBGMASK:\n"));
399 break;
400 case SOUND_MIXER_CS_SETDBGLEVEL:
401 CS_DBGOUT(CS_IOCTL, 4,
402 printk("SOUND_MIXER_CS_SETDBGLEVEL:\n"));
403 break;
404 case OSS_GETVERSION:
405 CS_DBGOUT(CS_IOCTL, 4, printk("OSS_GETVERSION:\n"));
406 break;
407 case SNDCTL_DSP_SYNC:
408 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_SYNC:\n"));
409 break;
410 case SNDCTL_DSP_SETDUPLEX:
411 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_SETDUPLEX:\n"));
412 break;
413 case SNDCTL_DSP_GETCAPS:
414 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_GETCAPS:\n"));
415 break;
416 case SNDCTL_DSP_RESET:
417 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_RESET:\n"));
418 break;
419 case SNDCTL_DSP_SPEED:
420 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_SPEED:\n"));
421 break;
422 case SNDCTL_DSP_STEREO:
423 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_STEREO:\n"));
424 break;
425 case SNDCTL_DSP_CHANNELS:
426 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_CHANNELS:\n"));
427 break;
428 case SNDCTL_DSP_GETFMTS:
429 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_GETFMTS:\n"));
430 break;
431 case SNDCTL_DSP_SETFMT:
432 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_SETFMT:\n"));
433 break;
434 case SNDCTL_DSP_POST:
435 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_POST:\n"));
436 break;
437 case SNDCTL_DSP_GETTRIGGER:
438 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_GETTRIGGER:\n"));
439 break;
440 case SNDCTL_DSP_SETTRIGGER:
441 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_SETTRIGGER:\n"));
442 break;
443 case SNDCTL_DSP_GETOSPACE:
444 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_GETOSPACE:\n"));
445 break;
446 case SNDCTL_DSP_GETISPACE:
447 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_GETISPACE:\n"));
448 break;
449 case SNDCTL_DSP_NONBLOCK:
450 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_NONBLOCK:\n"));
451 break;
452 case SNDCTL_DSP_GETODELAY:
453 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_GETODELAY:\n"));
454 break;
455 case SNDCTL_DSP_GETIPTR:
456 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_GETIPTR:\n"));
457 break;
458 case SNDCTL_DSP_GETOPTR:
459 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_GETOPTR:\n"));
460 break;
461 case SNDCTL_DSP_GETBLKSIZE:
462 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_GETBLKSIZE:\n"));
463 break;
464 case SNDCTL_DSP_SETFRAGMENT:
465 CS_DBGOUT(CS_IOCTL, 4,
466 printk("SNDCTL_DSP_SETFRAGMENT:\n"));
467 break;
468 case SNDCTL_DSP_SUBDIVIDE:
469 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_SUBDIVIDE:\n"));
470 break;
471 case SOUND_PCM_READ_RATE:
472 CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_PCM_READ_RATE:\n"));
473 break;
474 case SOUND_PCM_READ_CHANNELS:
475 CS_DBGOUT(CS_IOCTL, 4,
476 printk("SOUND_PCM_READ_CHANNELS:\n"));
477 break;
478 case SOUND_PCM_READ_BITS:
479 CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_PCM_READ_BITS:\n"));
480 break;
481 case SOUND_PCM_WRITE_FILTER:
482 CS_DBGOUT(CS_IOCTL, 4,
483 printk("SOUND_PCM_WRITE_FILTER:\n"));
484 break;
485 case SNDCTL_DSP_SETSYNCRO:
486 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_SETSYNCRO:\n"));
487 break;
488 case SOUND_PCM_READ_FILTER:
489 CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_PCM_READ_FILTER:\n"));
490 break;
491 case SOUND_MIXER_PRIVATE1:
492 CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_PRIVATE1:\n"));
493 break;
494 case SOUND_MIXER_PRIVATE2:
495 CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_PRIVATE2:\n"));
496 break;
497 case SOUND_MIXER_PRIVATE3:
498 CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_PRIVATE3:\n"));
499 break;
500 case SOUND_MIXER_PRIVATE4:
501 CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_PRIVATE4:\n"));
502 break;
503 case SOUND_MIXER_PRIVATE5:
504 CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_PRIVATE5:\n"));
505 break;
506 case SOUND_MIXER_INFO:
507 CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_INFO:\n"));
508 break;
509 case SOUND_OLD_MIXER_INFO:
510 CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_OLD_MIXER_INFO:\n"));
511 break;
512
513 default:
514 switch (_IOC_NR(x)) {
515 case SOUND_MIXER_VOLUME:
516 CS_DBGOUT(CS_IOCTL, 4,
517 printk("SOUND_MIXER_VOLUME:\n"));
518 break;
519 case SOUND_MIXER_SPEAKER:
520 CS_DBGOUT(CS_IOCTL, 4,
521 printk("SOUND_MIXER_SPEAKER:\n"));
522 break;
523 case SOUND_MIXER_RECLEV:
524 CS_DBGOUT(CS_IOCTL, 4,
525 printk("SOUND_MIXER_RECLEV:\n"));
526 break;
527 case SOUND_MIXER_MIC:
528 CS_DBGOUT(CS_IOCTL, 4,
529 printk("SOUND_MIXER_MIC:\n"));
530 break;
531 case SOUND_MIXER_SYNTH:
532 CS_DBGOUT(CS_IOCTL, 4,
533 printk("SOUND_MIXER_SYNTH:\n"));
534 break;
535 case SOUND_MIXER_RECSRC:
536 CS_DBGOUT(CS_IOCTL, 4,
537 printk("SOUND_MIXER_RECSRC:\n"));
538 break;
539 case SOUND_MIXER_DEVMASK:
540 CS_DBGOUT(CS_IOCTL, 4,
541 printk("SOUND_MIXER_DEVMASK:\n"));
542 break;
543 case SOUND_MIXER_RECMASK:
544 CS_DBGOUT(CS_IOCTL, 4,
545 printk("SOUND_MIXER_RECMASK:\n"));
546 break;
547 case SOUND_MIXER_STEREODEVS:
548 CS_DBGOUT(CS_IOCTL, 4,
549 printk("SOUND_MIXER_STEREODEVS:\n"));
550 break;
551 case SOUND_MIXER_CAPS:
552 CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_CAPS:\n"));
553 break;
554 default:
555 i = _IOC_NR(x);
556 if (i >= SOUND_MIXER_NRDEVICES
557 || !(vidx = mixtable1[i])) {
558 CS_DBGOUT(CS_IOCTL, 4, printk
559 ("UNKNOWN IOCTL: 0x%.8x NR=%d\n",
560 x, i));
561 } else {
562 CS_DBGOUT(CS_IOCTL, 4, printk
563 ("SOUND_MIXER_IOCTL AC9x: 0x%.8x NR=%d\n",
564 x, i));
565 }
566 break;
567 }
568 }
569 }
570 #endif
571
572
573 static int ser_init(struct cs4297a_state *s)
574 {
575 int i;
576
577 CS_DBGOUT(CS_INIT, 2,
578 printk(KERN_INFO "cs4297a: Setting up serial parameters\n"));
579
580 __raw_writeq(M_SYNCSER_CMD_RX_RESET | M_SYNCSER_CMD_TX_RESET, SS_CSR(R_SER_CMD));
581
582 __raw_writeq(M_SYNCSER_MSB_FIRST, SS_CSR(R_SER_MODE));
583 __raw_writeq(32, SS_CSR(R_SER_MINFRM_SZ));
584 __raw_writeq(32, SS_CSR(R_SER_MAXFRM_SZ));
585
586 __raw_writeq(1, SS_CSR(R_SER_TX_RD_THRSH));
587 __raw_writeq(4, SS_CSR(R_SER_TX_WR_THRSH));
588 __raw_writeq(8, SS_CSR(R_SER_RX_RD_THRSH));
589
590 /* This looks good from experimentation */
591 __raw_writeq((M_SYNCSER_TXSYNC_INT | V_SYNCSER_TXSYNC_DLY(0) | M_SYNCSER_TXCLK_EXT |
592 M_SYNCSER_RXSYNC_INT | V_SYNCSER_RXSYNC_DLY(1) | M_SYNCSER_RXCLK_EXT | M_SYNCSER_RXSYNC_EDGE),
593 SS_CSR(R_SER_LINE_MODE));
594
595 /* This looks good from experimentation */
596 __raw_writeq(V_SYNCSER_SEQ_COUNT(14) | M_SYNCSER_SEQ_ENABLE | M_SYNCSER_SEQ_STROBE,
597 SS_TXTBL(0));
598 __raw_writeq(V_SYNCSER_SEQ_COUNT(15) | M_SYNCSER_SEQ_ENABLE | M_SYNCSER_SEQ_BYTE,
599 SS_TXTBL(1));
600 __raw_writeq(V_SYNCSER_SEQ_COUNT(13) | M_SYNCSER_SEQ_ENABLE | M_SYNCSER_SEQ_BYTE,
601 SS_TXTBL(2));
602 __raw_writeq(V_SYNCSER_SEQ_COUNT( 0) | M_SYNCSER_SEQ_ENABLE |
603 M_SYNCSER_SEQ_STROBE | M_SYNCSER_SEQ_LAST, SS_TXTBL(3));
604
605 __raw_writeq(V_SYNCSER_SEQ_COUNT(14) | M_SYNCSER_SEQ_ENABLE | M_SYNCSER_SEQ_STROBE,
606 SS_RXTBL(0));
607 __raw_writeq(V_SYNCSER_SEQ_COUNT(15) | M_SYNCSER_SEQ_ENABLE | M_SYNCSER_SEQ_BYTE,
608 SS_RXTBL(1));
609 __raw_writeq(V_SYNCSER_SEQ_COUNT(13) | M_SYNCSER_SEQ_ENABLE | M_SYNCSER_SEQ_BYTE,
610 SS_RXTBL(2));
611 __raw_writeq(V_SYNCSER_SEQ_COUNT( 0) | M_SYNCSER_SEQ_ENABLE | M_SYNCSER_SEQ_STROBE |
612 M_SYNCSER_SEQ_LAST, SS_RXTBL(3));
613
614 for (i=4; i<16; i++) {
615 /* Just in case... */
616 __raw_writeq(M_SYNCSER_SEQ_LAST, SS_TXTBL(i));
617 __raw_writeq(M_SYNCSER_SEQ_LAST, SS_RXTBL(i));
618 }
619
620 return 0;
621 }
622
623 static int init_serdma(serdma_t *dma)
624 {
625 CS_DBGOUT(CS_INIT, 2,
626 printk(KERN_ERR "cs4297a: desc - %d sbufsize - %d dbufsize - %d\n",
627 DMA_DESCR, SAMPLE_BUF_SIZE, DMA_BUF_SIZE));
628
629 /* Descriptors */
630 dma->ringsz = DMA_DESCR;
631 dma->descrtab = kzalloc(dma->ringsz * sizeof(serdma_descr_t), GFP_KERNEL);
632 if (!dma->descrtab) {
633 printk(KERN_ERR "cs4297a: kzalloc descrtab failed\n");
634 return -1;
635 }
636 dma->descrtab_end = dma->descrtab + dma->ringsz;
637 /* XXX bloddy mess, use proper DMA API here ... */
638 dma->descrtab_phys = CPHYSADDR((long)dma->descrtab);
639 dma->descr_add = dma->descr_rem = dma->descrtab;
640
641 /* Frame buffer area */
642 dma->dma_buf = kzalloc(DMA_BUF_SIZE, GFP_KERNEL);
643 if (!dma->dma_buf) {
644 printk(KERN_ERR "cs4297a: kzalloc dma_buf failed\n");
645 kfree(dma->descrtab);
646 return -1;
647 }
648 dma->dma_buf_phys = CPHYSADDR((long)dma->dma_buf);
649
650 /* Samples buffer area */
651 dma->sbufsz = SAMPLE_BUF_SIZE;
652 dma->sample_buf = kmalloc(dma->sbufsz, GFP_KERNEL);
653 if (!dma->sample_buf) {
654 printk(KERN_ERR "cs4297a: kmalloc sample_buf failed\n");
655 kfree(dma->descrtab);
656 kfree(dma->dma_buf);
657 return -1;
658 }
659 dma->sb_swptr = dma->sb_hwptr = dma->sample_buf;
660 dma->sb_end = (u16 *)((void *)dma->sample_buf + dma->sbufsz);
661 dma->fragsize = dma->sbufsz >> 1;
662
663 CS_DBGOUT(CS_INIT, 4,
664 printk(KERN_ERR "cs4297a: descrtab - %08x dma_buf - %x sample_buf - %x\n",
665 (int)dma->descrtab, (int)dma->dma_buf,
666 (int)dma->sample_buf));
667
668 return 0;
669 }
670
671 static int dma_init(struct cs4297a_state *s)
672 {
673 int i;
674
675 CS_DBGOUT(CS_INIT, 2,
676 printk(KERN_INFO "cs4297a: Setting up DMA\n"));
677
678 if (init_serdma(&s->dma_adc) ||
679 init_serdma(&s->dma_dac))
680 return -1;
681
682 if (__raw_readq(SS_CSR(R_SER_DMA_DSCR_COUNT_RX))||
683 __raw_readq(SS_CSR(R_SER_DMA_DSCR_COUNT_TX))) {
684 panic("DMA state corrupted?!");
685 }
686
687 /* Initialize now - the descr/buffer pairings will never
688 change... */
689 for (i=0; i<DMA_DESCR; i++) {
690 s->dma_dac.descrtab[i].descr_a = M_DMA_SERRX_SOP | V_DMA_DSCRA_A_SIZE(1) |
691 (s->dma_dac.dma_buf_phys + i*FRAME_BYTES);
692 s->dma_dac.descrtab[i].descr_b = V_DMA_DSCRB_PKT_SIZE(FRAME_BYTES);
693 s->dma_adc.descrtab[i].descr_a = V_DMA_DSCRA_A_SIZE(1) |
694 (s->dma_adc.dma_buf_phys + i*FRAME_BYTES);
695 s->dma_adc.descrtab[i].descr_b = 0;
696 }
697
698 __raw_writeq((M_DMA_EOP_INT_EN | V_DMA_INT_PKTCNT(DMA_INT_CNT) |
699 V_DMA_RINGSZ(DMA_DESCR) | M_DMA_TDX_EN),
700 SS_CSR(R_SER_DMA_CONFIG0_RX));
701 __raw_writeq(M_DMA_L2CA, SS_CSR(R_SER_DMA_CONFIG1_RX));
702 __raw_writeq(s->dma_adc.descrtab_phys, SS_CSR(R_SER_DMA_DSCR_BASE_RX));
703
704 __raw_writeq(V_DMA_RINGSZ(DMA_DESCR), SS_CSR(R_SER_DMA_CONFIG0_TX));
705 __raw_writeq(M_DMA_L2CA | M_DMA_NO_DSCR_UPDT, SS_CSR(R_SER_DMA_CONFIG1_TX));
706 __raw_writeq(s->dma_dac.descrtab_phys, SS_CSR(R_SER_DMA_DSCR_BASE_TX));
707
708 /* Prep the receive DMA descriptor ring */
709 __raw_writeq(DMA_DESCR, SS_CSR(R_SER_DMA_DSCR_COUNT_RX));
710
711 __raw_writeq(M_SYNCSER_DMA_RX_EN | M_SYNCSER_DMA_TX_EN, SS_CSR(R_SER_DMA_ENABLE));
712
713 __raw_writeq((M_SYNCSER_RX_SYNC_ERR | M_SYNCSER_RX_OVERRUN | M_SYNCSER_RX_EOP_COUNT),
714 SS_CSR(R_SER_INT_MASK));
715
716 /* Enable the rx/tx; let the codec warm up to the sync and
717 start sending good frames before the receive FIFO is
718 enabled */
719 __raw_writeq(M_SYNCSER_CMD_TX_EN, SS_CSR(R_SER_CMD));
720 udelay(1000);
721 __raw_writeq(M_SYNCSER_CMD_RX_EN | M_SYNCSER_CMD_TX_EN, SS_CSR(R_SER_CMD));
722
723 /* XXXKW is this magic? (the "1" part) */
724 while ((__raw_readq(SS_CSR(R_SER_STATUS)) & 0xf1) != 1)
725 ;
726
727 CS_DBGOUT(CS_INIT, 4,
728 printk(KERN_INFO "cs4297a: status: %08x\n",
729 (unsigned int)(__raw_readq(SS_CSR(R_SER_STATUS)) & 0xffffffff)));
730
731 return 0;
732 }
733
734 static int serdma_reg_access(struct cs4297a_state *s, u64 data)
735 {
736 serdma_t *d = &s->dma_dac;
737 u64 *data_p;
738 unsigned swptr;
739 unsigned long flags;
740 serdma_descr_t *descr;
741
742 if (s->reg_request) {
743 printk(KERN_ERR "cs4297a: attempt to issue multiple reg_access\n");
744 return -1;
745 }
746
747 if (s->ena & FMODE_WRITE) {
748 /* Since a writer has the DSP open, we have to mux the
749 request in */
750 s->reg_request = data;
751 interruptible_sleep_on(&s->dma_dac.reg_wait);
752 /* XXXKW how can I deal with the starvation case where
753 the opener isn't writing? */
754 } else {
755 /* Be safe when changing ring pointers */
756 spin_lock_irqsave(&s->lock, flags);
757 if (d->hwptr != d->swptr) {
758 printk(KERN_ERR "cs4297a: reg access found bookkeeping error (hw/sw = %d/%d\n",
759 d->hwptr, d->swptr);
760 spin_unlock_irqrestore(&s->lock, flags);
761 return -1;
762 }
763 swptr = d->swptr;
764 d->hwptr = d->swptr = (d->swptr + 1) % d->ringsz;
765 spin_unlock_irqrestore(&s->lock, flags);
766
767 descr = &d->descrtab[swptr];
768 data_p = &d->dma_buf[swptr * 4];
769 *data_p = cpu_to_be64(data);
770 __raw_writeq(1, SS_CSR(R_SER_DMA_DSCR_COUNT_TX));
771 CS_DBGOUT(CS_DESCR, 4,
772 printk(KERN_INFO "cs4297a: add_tx %p (%x -> %x)\n",
773 data_p, swptr, d->hwptr));
774 }
775
776 CS_DBGOUT(CS_FUNCTION, 6,
777 printk(KERN_INFO "cs4297a: serdma_reg_access()-\n"));
778
779 return 0;
780 }
781
782 //****************************************************************************
783 // "cs4297a_read_ac97" -- Reads an AC97 register
784 //****************************************************************************
785 static int cs4297a_read_ac97(struct cs4297a_state *s, u32 offset,
786 u32 * value)
787 {
788 CS_DBGOUT(CS_AC97, 1,
789 printk(KERN_INFO "cs4297a: read reg %2x\n", offset));
790 if (serdma_reg_access(s, (0xCLL << 60) | (1LL << 47) | ((u64)(offset & 0x7F) << 40)))
791 return -1;
792
793 interruptible_sleep_on(&s->dma_adc.reg_wait);
794 *value = s->read_value;
795 CS_DBGOUT(CS_AC97, 2,
796 printk(KERN_INFO "cs4297a: rdr reg %x -> %x\n", s->read_reg, s->read_value));
797
798 return 0;
799 }
800
801
802 //****************************************************************************
803 // "cs4297a_write_ac97()"-- writes an AC97 register
804 //****************************************************************************
805 static int cs4297a_write_ac97(struct cs4297a_state *s, u32 offset,
806 u32 value)
807 {
808 CS_DBGOUT(CS_AC97, 1,
809 printk(KERN_INFO "cs4297a: write reg %2x -> %04x\n", offset, value));
810 return (serdma_reg_access(s, (0xELL << 60) | ((u64)(offset & 0x7F) << 40) | ((value & 0xffff) << 12)));
811 }
812
813 static void stop_dac(struct cs4297a_state *s)
814 {
815 unsigned long flags;
816
817 CS_DBGOUT(CS_WAVE_WRITE, 3, printk(KERN_INFO "cs4297a: stop_dac():\n"));
818 spin_lock_irqsave(&s->lock, flags);
819 s->ena &= ~FMODE_WRITE;
820 #if 0
821 /* XXXKW what do I really want here? My theory for now is
822 that I just flip the "ena" bit, and the interrupt handler
823 will stop processing the xmit channel */
824 __raw_writeq((s->ena & FMODE_READ) ? M_SYNCSER_DMA_RX_EN : 0,
825 SS_CSR(R_SER_DMA_ENABLE));
826 #endif
827
828 spin_unlock_irqrestore(&s->lock, flags);
829 }
830
831
832 static void start_dac(struct cs4297a_state *s)
833 {
834 unsigned long flags;
835
836 CS_DBGOUT(CS_FUNCTION, 3, printk(KERN_INFO "cs4297a: start_dac()+\n"));
837 spin_lock_irqsave(&s->lock, flags);
838 if (!(s->ena & FMODE_WRITE) && (s->dma_dac.mapped ||
839 (s->dma_dac.count > 0
840 && s->dma_dac.ready))) {
841 s->ena |= FMODE_WRITE;
842 /* XXXKW what do I really want here? My theory for
843 now is that I just flip the "ena" bit, and the
844 interrupt handler will start processing the xmit
845 channel */
846
847 CS_DBGOUT(CS_WAVE_WRITE | CS_PARMS, 8, printk(KERN_INFO
848 "cs4297a: start_dac(): start dma\n"));
849
850 }
851 spin_unlock_irqrestore(&s->lock, flags);
852 CS_DBGOUT(CS_FUNCTION, 3,
853 printk(KERN_INFO "cs4297a: start_dac()-\n"));
854 }
855
856
857 static void stop_adc(struct cs4297a_state *s)
858 {
859 unsigned long flags;
860
861 CS_DBGOUT(CS_FUNCTION, 3,
862 printk(KERN_INFO "cs4297a: stop_adc()+\n"));
863
864 spin_lock_irqsave(&s->lock, flags);
865 s->ena &= ~FMODE_READ;
866
867 if (s->conversion == 1) {
868 s->conversion = 0;
869 s->prop_adc.fmt = s->prop_adc.fmt_original;
870 }
871 /* Nothing to do really, I need to keep the DMA going
872 XXXKW when do I get here, and is there more I should do? */
873 spin_unlock_irqrestore(&s->lock, flags);
874 CS_DBGOUT(CS_FUNCTION, 3,
875 printk(KERN_INFO "cs4297a: stop_adc()-\n"));
876 }
877
878
879 static void start_adc(struct cs4297a_state *s)
880 {
881 unsigned long flags;
882
883 CS_DBGOUT(CS_FUNCTION, 2,
884 printk(KERN_INFO "cs4297a: start_adc()+\n"));
885
886 if (!(s->ena & FMODE_READ) &&
887 (s->dma_adc.mapped || s->dma_adc.count <=
888 (signed) (s->dma_adc.sbufsz - 2 * s->dma_adc.fragsize))
889 && s->dma_adc.ready) {
890 if (s->prop_adc.fmt & AFMT_S8 || s->prop_adc.fmt & AFMT_U8) {
891 //
892 // now only use 16 bit capture, due to truncation issue
893 // in the chip, noticeable distortion occurs.
894 // allocate buffer and then convert from 16 bit to
895 // 8 bit for the user buffer.
896 //
897 s->prop_adc.fmt_original = s->prop_adc.fmt;
898 if (s->prop_adc.fmt & AFMT_S8) {
899 s->prop_adc.fmt &= ~AFMT_S8;
900 s->prop_adc.fmt |= AFMT_S16_LE;
901 }
902 if (s->prop_adc.fmt & AFMT_U8) {
903 s->prop_adc.fmt &= ~AFMT_U8;
904 s->prop_adc.fmt |= AFMT_U16_LE;
905 }
906 //
907 // prog_dmabuf_adc performs a stop_adc() but that is
908 // ok since we really haven't started the DMA yet.
909 //
910 prog_codec(s, CS_TYPE_ADC);
911
912 prog_dmabuf_adc(s);
913 s->conversion = 1;
914 }
915 spin_lock_irqsave(&s->lock, flags);
916 s->ena |= FMODE_READ;
917 /* Nothing to do really, I am probably already
918 DMAing... XXXKW when do I get here, and is there
919 more I should do? */
920 spin_unlock_irqrestore(&s->lock, flags);
921
922 CS_DBGOUT(CS_PARMS, 6, printk(KERN_INFO
923 "cs4297a: start_adc(): start adc\n"));
924 }
925 CS_DBGOUT(CS_FUNCTION, 2,
926 printk(KERN_INFO "cs4297a: start_adc()-\n"));
927
928 }
929
930
931 // call with spinlock held!
932 static void cs4297a_update_ptr(struct cs4297a_state *s, int intflag)
933 {
934 int good_diff, diff, diff2;
935 u64 *data_p, data;
936 u32 *s_ptr;
937 unsigned hwptr;
938 u32 status;
939 serdma_t *d;
940 serdma_descr_t *descr;
941
942 // update ADC pointer
943 status = intflag ? __raw_readq(SS_CSR(R_SER_STATUS)) : 0;
944
945 if ((s->ena & FMODE_READ) || (status & (M_SYNCSER_RX_EOP_COUNT))) {
946 d = &s->dma_adc;
947 hwptr = (unsigned) (((__raw_readq(SS_CSR(R_SER_DMA_CUR_DSCR_ADDR_RX)) & M_DMA_CURDSCR_ADDR) -
948 d->descrtab_phys) / sizeof(serdma_descr_t));
949
950 if (s->ena & FMODE_READ) {
951 CS_DBGOUT(CS_FUNCTION, 2,
952 printk(KERN_INFO "cs4297a: upd_rcv sw->hw->hw %x/%x/%x (int-%d)n",
953 d->swptr, d->hwptr, hwptr, intflag));
954 /* Number of DMA buffers available for software: */
955 diff2 = diff = (d->ringsz + hwptr - d->hwptr) % d->ringsz;
956 d->hwptr = hwptr;
957 good_diff = 0;
958 s_ptr = (u32 *)&(d->dma_buf[d->swptr*4]);
959 descr = &d->descrtab[d->swptr];
960 while (diff2--) {
961 u64 data = be64_to_cpu(*(u64 *)s_ptr);
962 u64 descr_a;
963 u16 left, right;
964 descr_a = descr->descr_a;
965 descr->descr_a &= ~M_DMA_SERRX_SOP;
966 if ((descr_a & M_DMA_DSCRA_A_ADDR) != CPHYSADDR((long)s_ptr)) {
967 printk(KERN_ERR "cs4297a: RX Bad address (read)\n");
968 }
969 if (((data & 0x9800000000000000) != 0x9800000000000000) ||
970 (!(descr_a & M_DMA_SERRX_SOP)) ||
971 (G_DMA_DSCRB_PKT_SIZE(descr->descr_b) != FRAME_BYTES)) {
972 s->stats.rx_bad++;
973 printk(KERN_DEBUG "cs4297a: RX Bad attributes (read)\n");
974 continue;
975 }
976 s->stats.rx_good++;
977 if ((data >> 61) == 7) {
978 s->read_value = (data >> 12) & 0xffff;
979 s->read_reg = (data >> 40) & 0x7f;
980 wake_up(&d->reg_wait);
981 }
982 if (d->count && (d->sb_hwptr == d->sb_swptr)) {
983 s->stats.rx_overflow++;
984 printk(KERN_DEBUG "cs4297a: RX overflow\n");
985 continue;
986 }
987 good_diff++;
988 left = ((be32_to_cpu(s_ptr[1]) & 0xff) << 8) |
989 ((be32_to_cpu(s_ptr[2]) >> 24) & 0xff);
990 right = (be32_to_cpu(s_ptr[2]) >> 4) & 0xffff;
991 *d->sb_hwptr++ = cpu_to_be16(left);
992 *d->sb_hwptr++ = cpu_to_be16(right);
993 if (d->sb_hwptr == d->sb_end)
994 d->sb_hwptr = d->sample_buf;
995 descr++;
996 if (descr == d->descrtab_end) {
997 descr = d->descrtab;
998 s_ptr = (u32 *)s->dma_adc.dma_buf;
999 } else {
1000 s_ptr += 8;
1001 }
1002 }
1003 d->total_bytes += good_diff * FRAME_SAMPLE_BYTES;
1004 d->count += good_diff * FRAME_SAMPLE_BYTES;
1005 if (d->count > d->sbufsz) {
1006 printk(KERN_ERR "cs4297a: bogus receive overflow!!\n");
1007 }
1008 d->swptr = (d->swptr + diff) % d->ringsz;
1009 __raw_writeq(diff, SS_CSR(R_SER_DMA_DSCR_COUNT_RX));
1010 if (d->mapped) {
1011 if (d->count >= (signed) d->fragsize)
1012 wake_up(&d->wait);
1013 } else {
1014 if (d->count > 0) {
1015 CS_DBGOUT(CS_WAVE_READ, 4,
1016 printk(KERN_INFO
1017 "cs4297a: update count -> %d\n", d->count));
1018 wake_up(&d->wait);
1019 }
1020 }
1021 } else {
1022 /* Receive is going even if no one is
1023 listening (for register accesses and to
1024 avoid FIFO overrun) */
1025 diff2 = diff = (hwptr + d->ringsz - d->hwptr) % d->ringsz;
1026 if (!diff) {
1027 printk(KERN_ERR "cs4297a: RX full or empty?\n");
1028 }
1029
1030 descr = &d->descrtab[d->swptr];
1031 data_p = &d->dma_buf[d->swptr*4];
1032
1033 /* Force this to happen at least once; I got
1034 here because of an interrupt, so there must
1035 be a buffer to process. */
1036 do {
1037 data = be64_to_cpu(*data_p);
1038 if ((descr->descr_a & M_DMA_DSCRA_A_ADDR) != CPHYSADDR((long)data_p)) {
1039 printk(KERN_ERR "cs4297a: RX Bad address %d (%llx %lx)\n", d->swptr,
1040 (long long)(descr->descr_a & M_DMA_DSCRA_A_ADDR),
1041 (long)CPHYSADDR((long)data_p));
1042 }
1043 if (!(data & (1LL << 63)) ||
1044 !(descr->descr_a & M_DMA_SERRX_SOP) ||
1045 (G_DMA_DSCRB_PKT_SIZE(descr->descr_b) != FRAME_BYTES)) {
1046 s->stats.rx_bad++;
1047 printk(KERN_DEBUG "cs4297a: RX Bad attributes\n");
1048 } else {
1049 s->stats.rx_good++;
1050 if ((data >> 61) == 7) {
1051 s->read_value = (data >> 12) & 0xffff;
1052 s->read_reg = (data >> 40) & 0x7f;
1053 wake_up(&d->reg_wait);
1054 }
1055 }
1056 descr->descr_a &= ~M_DMA_SERRX_SOP;
1057 descr++;
1058 d->swptr++;
1059 data_p += 4;
1060 if (descr == d->descrtab_end) {
1061 descr = d->descrtab;
1062 d->swptr = 0;
1063 data_p = d->dma_buf;
1064 }
1065 __raw_writeq(1, SS_CSR(R_SER_DMA_DSCR_COUNT_RX));
1066 } while (--diff);
1067 d->hwptr = hwptr;
1068
1069 CS_DBGOUT(CS_DESCR, 6,
1070 printk(KERN_INFO "cs4297a: hw/sw %x/%x\n", d->hwptr, d->swptr));
1071 }
1072
1073 CS_DBGOUT(CS_PARMS, 8, printk(KERN_INFO
1074 "cs4297a: cs4297a_update_ptr(): s=0x%.8x hwptr=%d total_bytes=%d count=%d \n",
1075 (unsigned)s, d->hwptr,
1076 d->total_bytes, d->count));
1077 }
1078
1079 /* XXXKW worry about s->reg_request -- there is a starvation
1080 case if s->ena has FMODE_WRITE on, but the client isn't
1081 doing writes */
1082
1083 // update DAC pointer
1084 //
1085 // check for end of buffer, means that we are going to wait for another interrupt
1086 // to allow silence to fill the fifos on the part, to keep pops down to a minimum.
1087 //
1088 if (s->ena & FMODE_WRITE) {
1089 serdma_t *d = &s->dma_dac;
1090 hwptr = (unsigned) (((__raw_readq(SS_CSR(R_SER_DMA_CUR_DSCR_ADDR_TX)) & M_DMA_CURDSCR_ADDR) -
1091 d->descrtab_phys) / sizeof(serdma_descr_t));
1092 diff = (d->ringsz + hwptr - d->hwptr) % d->ringsz;
1093 CS_DBGOUT(CS_WAVE_WRITE, 4, printk(KERN_INFO
1094 "cs4297a: cs4297a_update_ptr(): hw/hw/sw %x/%x/%x diff %d count %d\n",
1095 d->hwptr, hwptr, d->swptr, diff, d->count));
1096 d->hwptr = hwptr;
1097 /* XXXKW stereo? conversion? Just assume 2 16-bit samples for now */
1098 d->total_bytes += diff * FRAME_SAMPLE_BYTES;
1099 if (d->mapped) {
1100 d->count += diff * FRAME_SAMPLE_BYTES;
1101 if (d->count >= d->fragsize) {
1102 d->wakeup = 1;
1103 wake_up(&d->wait);
1104 if (d->count > d->sbufsz)
1105 d->count &= d->sbufsz - 1;
1106 }
1107 } else {
1108 d->count -= diff * FRAME_SAMPLE_BYTES;
1109 if (d->count <= 0) {
1110 //
1111 // fill with silence, and do not shut down the DAC.
1112 // Continue to play silence until the _release.
1113 //
1114 CS_DBGOUT(CS_WAVE_WRITE, 6, printk(KERN_INFO
1115 "cs4297a: cs4297a_update_ptr(): memset %d at 0x%.8x for %d size \n",
1116 (unsigned)(s->prop_dac.fmt &
1117 (AFMT_U8 | AFMT_U16_LE)) ? 0x80 : 0,
1118 (unsigned)d->dma_buf,
1119 d->ringsz));
1120 memset(d->dma_buf, 0, d->ringsz * FRAME_BYTES);
1121 if (d->count < 0) {
1122 d->underrun = 1;
1123 s->stats.tx_underrun++;
1124 d->count = 0;
1125 CS_DBGOUT(CS_ERROR, 9, printk(KERN_INFO
1126 "cs4297a: cs4297a_update_ptr(): underrun\n"));
1127 }
1128 } else if (d->count <=
1129 (signed) d->fragsize
1130 && !d->endcleared) {
1131 /* XXXKW what is this for? */
1132 clear_advance(d->dma_buf,
1133 d->sbufsz,
1134 d->swptr,
1135 d->fragsize,
1136 0);
1137 d->endcleared = 1;
1138 }
1139 if ( (d->count <= (signed) d->sbufsz/2) || intflag)
1140 {
1141 CS_DBGOUT(CS_WAVE_WRITE, 4,
1142 printk(KERN_INFO
1143 "cs4297a: update count -> %d\n", d->count));
1144 wake_up(&d->wait);
1145 }
1146 }
1147 CS_DBGOUT(CS_PARMS, 8, printk(KERN_INFO
1148 "cs4297a: cs4297a_update_ptr(): s=0x%.8x hwptr=%d total_bytes=%d count=%d \n",
1149 (unsigned) s, d->hwptr,
1150 d->total_bytes, d->count));
1151 }
1152 }
1153
1154 static int mixer_ioctl(struct cs4297a_state *s, unsigned int cmd,
1155 unsigned long arg)
1156 {
1157 // Index to mixer_src[] is value of AC97 Input Mux Select Reg.
1158 // Value of array member is recording source Device ID Mask.
1159 static const unsigned int mixer_src[8] = {
1160 SOUND_MASK_MIC, SOUND_MASK_CD, 0, SOUND_MASK_LINE1,
1161 SOUND_MASK_LINE, SOUND_MASK_VOLUME, 0, 0
1162 };
1163
1164 // Index of mixtable1[] member is Device ID
1165 // and must be <= SOUND_MIXER_NRDEVICES.
1166 // Value of array member is index into s->mix.vol[]
1167 static const unsigned char mixtable1[SOUND_MIXER_NRDEVICES] = {
1168 [SOUND_MIXER_PCM] = 1, // voice
1169 [SOUND_MIXER_LINE1] = 2, // AUX
1170 [SOUND_MIXER_CD] = 3, // CD
1171 [SOUND_MIXER_LINE] = 4, // Line
1172 [SOUND_MIXER_SYNTH] = 5, // FM
1173 [SOUND_MIXER_MIC] = 6, // Mic
1174 [SOUND_MIXER_SPEAKER] = 7, // Speaker
1175 [SOUND_MIXER_RECLEV] = 8, // Recording level
1176 [SOUND_MIXER_VOLUME] = 9 // Master Volume
1177 };
1178
1179 static const unsigned mixreg[] = {
1180 AC97_PCMOUT_VOL,
1181 AC97_AUX_VOL,
1182 AC97_CD_VOL,
1183 AC97_LINEIN_VOL
1184 };
1185 unsigned char l, r, rl, rr, vidx;
1186 unsigned char attentbl[11] =
1187 { 63, 42, 26, 17, 14, 11, 8, 6, 4, 2, 0 };
1188 unsigned temp1;
1189 int i, val;
1190
1191 VALIDATE_STATE(s);
1192 CS_DBGOUT(CS_FUNCTION, 4, printk(KERN_INFO
1193 "cs4297a: mixer_ioctl(): s=0x%.8x cmd=0x%.8x\n",
1194 (unsigned) s, cmd));
1195 #if CSDEBUG
1196 cs_printioctl(cmd);
1197 #endif
1198 #if CSDEBUG_INTERFACE
1199
1200 if ((cmd == SOUND_MIXER_CS_GETDBGMASK) ||
1201 (cmd == SOUND_MIXER_CS_SETDBGMASK) ||
1202 (cmd == SOUND_MIXER_CS_GETDBGLEVEL) ||
1203 (cmd == SOUND_MIXER_CS_SETDBGLEVEL))
1204 {
1205 switch (cmd) {
1206
1207 case SOUND_MIXER_CS_GETDBGMASK:
1208 return put_user(cs_debugmask,
1209 (unsigned long *) arg);
1210
1211 case SOUND_MIXER_CS_GETDBGLEVEL:
1212 return put_user(cs_debuglevel,
1213 (unsigned long *) arg);
1214
1215 case SOUND_MIXER_CS_SETDBGMASK:
1216 if (get_user(val, (unsigned long *) arg))
1217 return -EFAULT;
1218 cs_debugmask = val;
1219 return 0;
1220
1221 case SOUND_MIXER_CS_SETDBGLEVEL:
1222 if (get_user(val, (unsigned long *) arg))
1223 return -EFAULT;
1224 cs_debuglevel = val;
1225 return 0;
1226 default:
1227 CS_DBGOUT(CS_ERROR, 1, printk(KERN_INFO
1228 "cs4297a: mixer_ioctl(): ERROR unknown debug cmd\n"));
1229 return 0;
1230 }
1231 }
1232 #endif
1233
1234 if (cmd == SOUND_MIXER_PRIVATE1) {
1235 return -EINVAL;
1236 }
1237 if (cmd == SOUND_MIXER_PRIVATE2) {
1238 // enable/disable/query spatializer
1239 if (get_user(val, (int *) arg))
1240 return -EFAULT;
1241 if (val != -1) {
1242 temp1 = (val & 0x3f) >> 2;
1243 cs4297a_write_ac97(s, AC97_3D_CONTROL, temp1);
1244 cs4297a_read_ac97(s, AC97_GENERAL_PURPOSE,
1245 &temp1);
1246 cs4297a_write_ac97(s, AC97_GENERAL_PURPOSE,
1247 temp1 | 0x2000);
1248 }
1249 cs4297a_read_ac97(s, AC97_3D_CONTROL, &temp1);
1250 return put_user((temp1 << 2) | 3, (int *) arg);
1251 }
1252 if (cmd == SOUND_MIXER_INFO) {
1253 mixer_info info;
1254 memset(&info, 0, sizeof(info));
1255 strlcpy(info.id, "CS4297a", sizeof(info.id));
1256 strlcpy(info.name, "Crystal CS4297a", sizeof(info.name));
1257 info.modify_counter = s->mix.modcnt;
1258 if (copy_to_user((void *) arg, &info, sizeof(info)))
1259 return -EFAULT;
1260 return 0;
1261 }
1262 if (cmd == SOUND_OLD_MIXER_INFO) {
1263 _old_mixer_info info;
1264 memset(&info, 0, sizeof(info));
1265 strlcpy(info.id, "CS4297a", sizeof(info.id));
1266 strlcpy(info.name, "Crystal CS4297a", sizeof(info.name));
1267 if (copy_to_user((void *) arg, &info, sizeof(info)))
1268 return -EFAULT;
1269 return 0;
1270 }
1271 if (cmd == OSS_GETVERSION)
1272 return put_user(SOUND_VERSION, (int *) arg);
1273
1274 if (_IOC_TYPE(cmd) != 'M' || _SIOC_SIZE(cmd) != sizeof(int))
1275 return -EINVAL;
1276
1277 // If ioctl has only the SIOC_READ bit(bit 31)
1278 // on, process the only-read commands.
1279 if (_SIOC_DIR(cmd) == _SIOC_READ) {
1280 switch (_IOC_NR(cmd)) {
1281 case SOUND_MIXER_RECSRC: // Arg contains a bit for each recording source
1282 cs4297a_read_ac97(s, AC97_RECORD_SELECT,
1283 &temp1);
1284 return put_user(mixer_src[temp1 & 7], (int *) arg);
1285
1286 case SOUND_MIXER_DEVMASK: // Arg contains a bit for each supported device
1287 return put_user(SOUND_MASK_PCM | SOUND_MASK_LINE |
1288 SOUND_MASK_VOLUME | SOUND_MASK_RECLEV,
1289 (int *) arg);
1290
1291 case SOUND_MIXER_RECMASK: // Arg contains a bit for each supported recording source
1292 return put_user(SOUND_MASK_LINE | SOUND_MASK_VOLUME,
1293 (int *) arg);
1294
1295 case SOUND_MIXER_STEREODEVS: // Mixer channels supporting stereo
1296 return put_user(SOUND_MASK_PCM | SOUND_MASK_LINE |
1297 SOUND_MASK_VOLUME | SOUND_MASK_RECLEV,
1298 (int *) arg);
1299
1300 case SOUND_MIXER_CAPS:
1301 return put_user(SOUND_CAP_EXCL_INPUT, (int *) arg);
1302
1303 default:
1304 i = _IOC_NR(cmd);
1305 if (i >= SOUND_MIXER_NRDEVICES
1306 || !(vidx = mixtable1[i]))
1307 return -EINVAL;
1308 return put_user(s->mix.vol[vidx - 1], (int *) arg);
1309 }
1310 }
1311 // If ioctl doesn't have both the SIOC_READ and
1312 // the SIOC_WRITE bit set, return invalid.
1313 if (_SIOC_DIR(cmd) != (_SIOC_READ | _SIOC_WRITE))
1314 return -EINVAL;
1315
1316 // Increment the count of volume writes.
1317 s->mix.modcnt++;
1318
1319 // Isolate the command; it must be a write.
1320 switch (_IOC_NR(cmd)) {
1321
1322 case SOUND_MIXER_RECSRC: // Arg contains a bit for each recording source
1323 if (get_user(val, (int *) arg))
1324 return -EFAULT;
1325 i = hweight32(val); // i = # bits on in val.
1326 if (i != 1) // One & only 1 bit must be on.
1327 return 0;
1328 for (i = 0; i < sizeof(mixer_src) / sizeof(int); i++) {
1329 if (val == mixer_src[i]) {
1330 temp1 = (i << 8) | i;
1331 cs4297a_write_ac97(s,
1332 AC97_RECORD_SELECT,
1333 temp1);
1334 return 0;
1335 }
1336 }
1337 return 0;
1338
1339 case SOUND_MIXER_VOLUME:
1340 if (get_user(val, (int *) arg))
1341 return -EFAULT;
1342 l = val & 0xff;
1343 if (l > 100)
1344 l = 100; // Max soundcard.h vol is 100.
1345 if (l < 6) {
1346 rl = 63;
1347 l = 0;
1348 } else
1349 rl = attentbl[(10 * l) / 100]; // Convert 0-100 vol to 63-0 atten.
1350
1351 r = (val >> 8) & 0xff;
1352 if (r > 100)
1353 r = 100; // Max right volume is 100, too
1354 if (r < 6) {
1355 rr = 63;
1356 r = 0;
1357 } else
1358 rr = attentbl[(10 * r) / 100]; // Convert volume to attenuation.
1359
1360 if ((rl > 60) && (rr > 60)) // If both l & r are 'low',
1361 temp1 = 0x8000; // turn on the mute bit.
1362 else
1363 temp1 = 0;
1364
1365 temp1 |= (rl << 8) | rr;
1366
1367 cs4297a_write_ac97(s, AC97_MASTER_VOL_STEREO, temp1);
1368 cs4297a_write_ac97(s, AC97_PHONE_VOL, temp1);
1369
1370 #ifdef OSS_DOCUMENTED_MIXER_SEMANTICS
1371 s->mix.vol[8] = ((unsigned int) r << 8) | l;
1372 #else
1373 s->mix.vol[8] = val;
1374 #endif
1375 return put_user(s->mix.vol[8], (int *) arg);
1376
1377 case SOUND_MIXER_SPEAKER:
1378 if (get_user(val, (int *) arg))
1379 return -EFAULT;
1380 l = val & 0xff;
1381 if (l > 100)
1382 l = 100;
1383 if (l < 3) {
1384 rl = 0;
1385 l = 0;
1386 } else {
1387 rl = (l * 2 - 5) / 13; // Convert 0-100 range to 0-15.
1388 l = (rl * 13 + 5) / 2;
1389 }
1390
1391 if (rl < 3) {
1392 temp1 = 0x8000;
1393 rl = 0;
1394 } else
1395 temp1 = 0;
1396 rl = 15 - rl; // Convert volume to attenuation.
1397 temp1 |= rl << 1;
1398 cs4297a_write_ac97(s, AC97_PCBEEP_VOL, temp1);
1399
1400 #ifdef OSS_DOCUMENTED_MIXER_SEMANTICS
1401 s->mix.vol[6] = l << 8;
1402 #else
1403 s->mix.vol[6] = val;
1404 #endif
1405 return put_user(s->mix.vol[6], (int *) arg);
1406
1407 case SOUND_MIXER_RECLEV:
1408 if (get_user(val, (int *) arg))
1409 return -EFAULT;
1410 l = val & 0xff;
1411 if (l > 100)
1412 l = 100;
1413 r = (val >> 8) & 0xff;
1414 if (r > 100)
1415 r = 100;
1416 rl = (l * 2 - 5) / 13; // Convert 0-100 scale to 0-15.
1417 rr = (r * 2 - 5) / 13;
1418 if (rl < 3 && rr < 3)
1419 temp1 = 0x8000;
1420 else
1421 temp1 = 0;
1422
1423 temp1 = temp1 | (rl << 8) | rr;
1424 cs4297a_write_ac97(s, AC97_RECORD_GAIN, temp1);
1425
1426 #ifdef OSS_DOCUMENTED_MIXER_SEMANTICS
1427 s->mix.vol[7] = ((unsigned int) r << 8) | l;
1428 #else
1429 s->mix.vol[7] = val;
1430 #endif
1431 return put_user(s->mix.vol[7], (int *) arg);
1432
1433 case SOUND_MIXER_MIC:
1434 if (get_user(val, (int *) arg))
1435 return -EFAULT;
1436 l = val & 0xff;
1437 if (l > 100)
1438 l = 100;
1439 if (l < 1) {
1440 l = 0;
1441 rl = 0;
1442 } else {
1443 rl = ((unsigned) l * 5 - 4) / 16; // Convert 0-100 range to 0-31.
1444 l = (rl * 16 + 4) / 5;
1445 }
1446 cs4297a_read_ac97(s, AC97_MIC_VOL, &temp1);
1447 temp1 &= 0x40; // Isolate 20db gain bit.
1448 if (rl < 3) {
1449 temp1 |= 0x8000;
1450 rl = 0;
1451 }
1452 rl = 31 - rl; // Convert volume to attenuation.
1453 temp1 |= rl;
1454 cs4297a_write_ac97(s, AC97_MIC_VOL, temp1);
1455
1456 #ifdef OSS_DOCUMENTED_MIXER_SEMANTICS
1457 s->mix.vol[5] = val << 8;
1458 #else
1459 s->mix.vol[5] = val;
1460 #endif
1461 return put_user(s->mix.vol[5], (int *) arg);
1462
1463
1464 case SOUND_MIXER_SYNTH:
1465 if (get_user(val, (int *) arg))
1466 return -EFAULT;
1467 l = val & 0xff;
1468 if (l > 100)
1469 l = 100;
1470 if (get_user(val, (int *) arg))
1471 return -EFAULT;
1472 r = (val >> 8) & 0xff;
1473 if (r > 100)
1474 r = 100;
1475 rl = (l * 2 - 11) / 3; // Convert 0-100 range to 0-63.
1476 rr = (r * 2 - 11) / 3;
1477 if (rl < 3) // If l is low, turn on
1478 temp1 = 0x0080; // the mute bit.
1479 else
1480 temp1 = 0;
1481
1482 rl = 63 - rl; // Convert vol to attenuation.
1483 // writel(temp1 | rl, s->pBA0 + FMLVC);
1484 if (rr < 3) // If rr is low, turn on
1485 temp1 = 0x0080; // the mute bit.
1486 else
1487 temp1 = 0;
1488 rr = 63 - rr; // Convert vol to attenuation.
1489 // writel(temp1 | rr, s->pBA0 + FMRVC);
1490
1491 #ifdef OSS_DOCUMENTED_MIXER_SEMANTICS
1492 s->mix.vol[4] = (r << 8) | l;
1493 #else
1494 s->mix.vol[4] = val;
1495 #endif
1496 return put_user(s->mix.vol[4], (int *) arg);
1497
1498
1499 default:
1500 CS_DBGOUT(CS_IOCTL, 4, printk(KERN_INFO
1501 "cs4297a: mixer_ioctl(): default\n"));
1502
1503 i = _IOC_NR(cmd);
1504 if (i >= SOUND_MIXER_NRDEVICES || !(vidx = mixtable1[i]))
1505 return -EINVAL;
1506 if (get_user(val, (int *) arg))
1507 return -EFAULT;
1508 l = val & 0xff;
1509 if (l > 100)
1510 l = 100;
1511 if (l < 1) {
1512 l = 0;
1513 rl = 31;
1514 } else
1515 rl = (attentbl[(l * 10) / 100]) >> 1;
1516
1517 r = (val >> 8) & 0xff;
1518 if (r > 100)
1519 r = 100;
1520 if (r < 1) {
1521 r = 0;
1522 rr = 31;
1523 } else
1524 rr = (attentbl[(r * 10) / 100]) >> 1;
1525 if ((rl > 30) && (rr > 30))
1526 temp1 = 0x8000;
1527 else
1528 temp1 = 0;
1529 temp1 = temp1 | (rl << 8) | rr;
1530 cs4297a_write_ac97(s, mixreg[vidx - 1], temp1);
1531
1532 #ifdef OSS_DOCUMENTED_MIXER_SEMANTICS
1533 s->mix.vol[vidx - 1] = ((unsigned int) r << 8) | l;
1534 #else
1535 s->mix.vol[vidx - 1] = val;
1536 #endif
1537 return put_user(s->mix.vol[vidx - 1], (int *) arg);
1538 }
1539 }
1540
1541
1542 // ---------------------------------------------------------------------
1543
1544 static int cs4297a_open_mixdev(struct inode *inode, struct file *file)
1545 {
1546 int minor = iminor(inode);
1547 struct cs4297a_state *s=NULL;
1548 struct list_head *entry;
1549
1550 CS_DBGOUT(CS_FUNCTION | CS_OPEN, 4,
1551 printk(KERN_INFO "cs4297a: cs4297a_open_mixdev()+\n"));
1552
1553 mutex_lock(&swarm_cs4297a_mutex);
1554 list_for_each(entry, &cs4297a_devs)
1555 {
1556 s = list_entry(entry, struct cs4297a_state, list);
1557 if(s->dev_mixer == minor)
1558 break;
1559 }
1560 if (!s)
1561 {
1562 CS_DBGOUT(CS_FUNCTION | CS_OPEN | CS_ERROR, 2,
1563 printk(KERN_INFO "cs4297a: cs4297a_open_mixdev()- -ENODEV\n"));
1564
1565 mutex_unlock(&swarm_cs4297a_mutex);
1566 return -ENODEV;
1567 }
1568 VALIDATE_STATE(s);
1569 file->private_data = s;
1570
1571 CS_DBGOUT(CS_FUNCTION | CS_OPEN, 4,
1572 printk(KERN_INFO "cs4297a: cs4297a_open_mixdev()- 0\n"));
1573 mutex_unlock(&swarm_cs4297a_mutex);
1574
1575 return nonseekable_open(inode, file);
1576 }
1577
1578
1579 static int cs4297a_release_mixdev(struct inode *inode, struct file *file)
1580 {
1581 struct cs4297a_state *s =
1582 (struct cs4297a_state *) file->private_data;
1583
1584 VALIDATE_STATE(s);
1585 return 0;
1586 }
1587
1588
1589 static int cs4297a_ioctl_mixdev(struct file *file,
1590 unsigned int cmd, unsigned long arg)
1591 {
1592 int ret;
1593 mutex_lock(&swarm_cs4297a_mutex);
1594 ret = mixer_ioctl((struct cs4297a_state *) file->private_data, cmd,
1595 arg);
1596 mutex_unlock(&swarm_cs4297a_mutex);
1597 return ret;
1598 }
1599
1600
1601 // ******************************************************************************************
1602 // Mixer file operations struct.
1603 // ******************************************************************************************
1604 static const struct file_operations cs4297a_mixer_fops = {
1605 .owner = THIS_MODULE,
1606 .llseek = no_llseek,
1607 .unlocked_ioctl = cs4297a_ioctl_mixdev,
1608 .open = cs4297a_open_mixdev,
1609 .release = cs4297a_release_mixdev,
1610 };
1611
1612 // ---------------------------------------------------------------------
1613
1614
1615 static int drain_adc(struct cs4297a_state *s, int nonblock)
1616 {
1617 /* This routine serves no purpose currently - any samples
1618 sitting in the receive queue will just be processed by the
1619 background consumer. This would be different if DMA
1620 actually stopped when there were no clients. */
1621 return 0;
1622 }
1623
1624 static int drain_dac(struct cs4297a_state *s, int nonblock)
1625 {
1626 DECLARE_WAITQUEUE(wait, current);
1627 unsigned long flags;
1628 unsigned hwptr;
1629 unsigned tmo;
1630 int count;
1631
1632 if (s->dma_dac.mapped)
1633 return 0;
1634 if (nonblock)
1635 return -EBUSY;
1636 add_wait_queue(&s->dma_dac.wait, &wait);
1637 while ((count = __raw_readq(SS_CSR(R_SER_DMA_DSCR_COUNT_TX))) ||
1638 (s->dma_dac.count > 0)) {
1639 if (!signal_pending(current)) {
1640 set_current_state(TASK_INTERRUPTIBLE);
1641 /* XXXKW is this calculation working? */
1642 tmo = ((count * FRAME_TX_US) * HZ) / 1000000;
1643 schedule_timeout(tmo + 1);
1644 } else {
1645 /* XXXKW do I care if there is a signal pending? */
1646 }
1647 }
1648 spin_lock_irqsave(&s->lock, flags);
1649 /* Reset the bookkeeping */
1650 hwptr = (int)(((__raw_readq(SS_CSR(R_SER_DMA_CUR_DSCR_ADDR_TX)) & M_DMA_CURDSCR_ADDR) -
1651 s->dma_dac.descrtab_phys) / sizeof(serdma_descr_t));
1652 s->dma_dac.hwptr = s->dma_dac.swptr = hwptr;
1653 spin_unlock_irqrestore(&s->lock, flags);
1654 remove_wait_queue(&s->dma_dac.wait, &wait);
1655 current->state = TASK_RUNNING;
1656 return 0;
1657 }
1658
1659
1660 // ---------------------------------------------------------------------
1661
1662 static ssize_t cs4297a_read(struct file *file, char *buffer, size_t count,
1663 loff_t * ppos)
1664 {
1665 struct cs4297a_state *s =
1666 (struct cs4297a_state *) file->private_data;
1667 ssize_t ret;
1668 unsigned long flags;
1669 int cnt, count_fr, cnt_by;
1670 unsigned copied = 0;
1671
1672 CS_DBGOUT(CS_FUNCTION | CS_WAVE_READ, 2,
1673 printk(KERN_INFO "cs4297a: cs4297a_read()+ %d \n", count));
1674
1675 VALIDATE_STATE(s);
1676 if (s->dma_adc.mapped)
1677 return -ENXIO;
1678 if (!s->dma_adc.ready && (ret = prog_dmabuf_adc(s)))
1679 return ret;
1680 if (!access_ok(VERIFY_WRITE, buffer, count))
1681 return -EFAULT;
1682 ret = 0;
1683 //
1684 // "count" is the amount of bytes to read (from app), is decremented each loop
1685 // by the amount of bytes that have been returned to the user buffer.
1686 // "cnt" is the running total of each read from the buffer (changes each loop)
1687 // "buffer" points to the app's buffer
1688 // "ret" keeps a running total of the amount of bytes that have been copied
1689 // to the user buffer.
1690 // "copied" is the total bytes copied into the user buffer for each loop.
1691 //
1692 while (count > 0) {
1693 CS_DBGOUT(CS_WAVE_READ, 8, printk(KERN_INFO
1694 "_read() count>0 count=%d .count=%d .swptr=%d .hwptr=%d \n",
1695 count, s->dma_adc.count,
1696 s->dma_adc.swptr, s->dma_adc.hwptr));
1697 spin_lock_irqsave(&s->lock, flags);
1698
1699 /* cnt will be the number of available samples (16-bit
1700 stereo); it starts out as the maxmimum consequetive
1701 samples */
1702 cnt = (s->dma_adc.sb_end - s->dma_adc.sb_swptr) / 2;
1703 count_fr = s->dma_adc.count / FRAME_SAMPLE_BYTES;
1704
1705 // dma_adc.count is the current total bytes that have not been read.
1706 // if the amount of unread bytes from the current sw pointer to the
1707 // end of the buffer is greater than the current total bytes that
1708 // have not been read, then set the "cnt" (unread bytes) to the
1709 // amount of unread bytes.
1710
1711 if (count_fr < cnt)
1712 cnt = count_fr;
1713 cnt_by = cnt * FRAME_SAMPLE_BYTES;
1714 spin_unlock_irqrestore(&s->lock, flags);
1715 //
1716 // if we are converting from 8/16 then we need to copy
1717 // twice the number of 16 bit bytes then 8 bit bytes.
1718 //
1719 if (s->conversion) {
1720 if (cnt_by > (count * 2)) {
1721 cnt = (count * 2) / FRAME_SAMPLE_BYTES;
1722 cnt_by = count * 2;
1723 }
1724 } else {
1725 if (cnt_by > count) {
1726 cnt = count / FRAME_SAMPLE_BYTES;
1727 cnt_by = count;
1728 }
1729 }
1730 //
1731 // "cnt" NOW is the smaller of the amount that will be read,
1732 // and the amount that is requested in this read (or partial).
1733 // if there are no bytes in the buffer to read, then start the
1734 // ADC and wait for the interrupt handler to wake us up.
1735 //
1736 if (cnt <= 0) {
1737
1738 // start up the dma engine and then continue back to the top of
1739 // the loop when wake up occurs.
1740 start_adc(s);
1741 if (file->f_flags & O_NONBLOCK)
1742 return ret ? ret : -EAGAIN;
1743 interruptible_sleep_on(&s->dma_adc.wait);
1744 if (signal_pending(current))
1745 return ret ? ret : -ERESTARTSYS;
1746 continue;
1747 }
1748 // there are bytes in the buffer to read.
1749 // copy from the hw buffer over to the user buffer.
1750 // user buffer is designated by "buffer"
1751 // virtual address to copy from is dma_buf+swptr
1752 // the "cnt" is the number of bytes to read.
1753
1754 CS_DBGOUT(CS_WAVE_READ, 2, printk(KERN_INFO
1755 "_read() copy_to cnt=%d count=%d ", cnt_by, count));
1756 CS_DBGOUT(CS_WAVE_READ, 8, printk(KERN_INFO
1757 " .sbufsz=%d .count=%d buffer=0x%.8x ret=%d\n",
1758 s->dma_adc.sbufsz, s->dma_adc.count,
1759 (unsigned) buffer, ret));
1760
1761 if (copy_to_user (buffer, ((void *)s->dma_adc.sb_swptr), cnt_by))
1762 return ret ? ret : -EFAULT;
1763 copied = cnt_by;
1764
1765 /* Return the descriptors */
1766 spin_lock_irqsave(&s->lock, flags);
1767 CS_DBGOUT(CS_FUNCTION, 2,
1768 printk(KERN_INFO "cs4297a: upd_rcv sw->hw %x/%x\n", s->dma_adc.swptr, s->dma_adc.hwptr));
1769 s->dma_adc.count -= cnt_by;
1770 s->dma_adc.sb_swptr += cnt * 2;
1771 if (s->dma_adc.sb_swptr == s->dma_adc.sb_end)
1772 s->dma_adc.sb_swptr = s->dma_adc.sample_buf;
1773 spin_unlock_irqrestore(&s->lock, flags);
1774 count -= copied;
1775 buffer += copied;
1776 ret += copied;
1777 start_adc(s);
1778 }
1779 CS_DBGOUT(CS_FUNCTION | CS_WAVE_READ, 2,
1780 printk(KERN_INFO "cs4297a: cs4297a_read()- %d\n", ret));
1781 return ret;
1782 }
1783
1784
1785 static ssize_t cs4297a_write(struct file *file, const char *buffer,
1786 size_t count, loff_t * ppos)
1787 {
1788 struct cs4297a_state *s =
1789 (struct cs4297a_state *) file->private_data;
1790 ssize_t ret;
1791 unsigned long flags;
1792 unsigned swptr, hwptr;
1793 int cnt;
1794
1795 CS_DBGOUT(CS_FUNCTION | CS_WAVE_WRITE, 2,
1796 printk(KERN_INFO "cs4297a: cs4297a_write()+ count=%d\n",
1797 count));
1798 VALIDATE_STATE(s);
1799
1800 if (s->dma_dac.mapped)
1801 return -ENXIO;
1802 if (!s->dma_dac.ready && (ret = prog_dmabuf_dac(s)))
1803 return ret;
1804 if (!access_ok(VERIFY_READ, buffer, count))
1805 return -EFAULT;
1806 ret = 0;
1807 while (count > 0) {
1808 serdma_t *d = &s->dma_dac;
1809 int copy_cnt;
1810 u32 *s_tmpl;
1811 u32 *t_tmpl;
1812 u32 left, right;
1813 int swap = (s->prop_dac.fmt == AFMT_S16_LE) || (s->prop_dac.fmt == AFMT_U16_LE);
1814
1815 /* XXXXXX this is broken for BLOAT_FACTOR */
1816 spin_lock_irqsave(&s->lock, flags);
1817 if (d->count < 0) {
1818 d->count = 0;
1819 d->swptr = d->hwptr;
1820 }
1821 if (d->underrun) {
1822 d->underrun = 0;
1823 hwptr = (unsigned) (((__raw_readq(SS_CSR(R_SER_DMA_CUR_DSCR_ADDR_TX)) & M_DMA_CURDSCR_ADDR) -
1824 d->descrtab_phys) / sizeof(serdma_descr_t));
1825 d->swptr = d->hwptr = hwptr;
1826 }
1827 swptr = d->swptr;
1828 cnt = d->sbufsz - (swptr * FRAME_SAMPLE_BYTES);
1829 /* Will this write fill up the buffer? */
1830 if (d->count + cnt > d->sbufsz)
1831 cnt = d->sbufsz - d->count;
1832 spin_unlock_irqrestore(&s->lock, flags);
1833 if (cnt > count)
1834 cnt = count;
1835 if (cnt <= 0) {
1836 start_dac(s);
1837 if (file->f_flags & O_NONBLOCK)
1838 return ret ? ret : -EAGAIN;
1839 interruptible_sleep_on(&d->wait);
1840 if (signal_pending(current))
1841 return ret ? ret : -ERESTARTSYS;
1842 continue;
1843 }
1844 if (copy_from_user(d->sample_buf, buffer, cnt))
1845 return ret ? ret : -EFAULT;
1846
1847 copy_cnt = cnt;
1848 s_tmpl = (u32 *)d->sample_buf;
1849 t_tmpl = (u32 *)(d->dma_buf + (swptr * 4));
1850
1851 /* XXXKW assuming 16-bit stereo! */
1852 do {
1853 u32 tmp;
1854
1855 t_tmpl[0] = cpu_to_be32(0x98000000);
1856
1857 tmp = be32_to_cpu(s_tmpl[0]);
1858 left = tmp & 0xffff;
1859 right = tmp >> 16;
1860 if (swap) {
1861 left = swab16(left);
1862 right = swab16(right);
1863 }
1864 t_tmpl[1] = cpu_to_be32(left >> 8);
1865 t_tmpl[2] = cpu_to_be32(((left & 0xff) << 24) |
1866 (right << 4));
1867
1868 s_tmpl++;
1869 t_tmpl += 8;
1870 copy_cnt -= 4;
1871 } while (copy_cnt);
1872
1873 /* Mux in any pending read/write accesses */
1874 if (s->reg_request) {
1875 *(u64 *)(d->dma_buf + (swptr * 4)) |=
1876 cpu_to_be64(s->reg_request);
1877 s->reg_request = 0;
1878 wake_up(&s->dma_dac.reg_wait);
1879 }
1880
1881 CS_DBGOUT(CS_WAVE_WRITE, 4,
1882 printk(KERN_INFO
1883 "cs4297a: copy in %d to swptr %x\n", cnt, swptr));
1884
1885 swptr = (swptr + (cnt/FRAME_SAMPLE_BYTES)) % d->ringsz;
1886 __raw_writeq(cnt/FRAME_SAMPLE_BYTES, SS_CSR(R_SER_DMA_DSCR_COUNT_TX));
1887 spin_lock_irqsave(&s->lock, flags);
1888 d->swptr = swptr;
1889 d->count += cnt;
1890 d->endcleared = 0;
1891 spin_unlock_irqrestore(&s->lock, flags);
1892 count -= cnt;
1893 buffer += cnt;
1894 ret += cnt;
1895 start_dac(s);
1896 }
1897 CS_DBGOUT(CS_FUNCTION | CS_WAVE_WRITE, 2,
1898 printk(KERN_INFO "cs4297a: cs4297a_write()- %d\n", ret));
1899 return ret;
1900 }
1901
1902
1903 static unsigned int cs4297a_poll(struct file *file,
1904 struct poll_table_struct *wait)
1905 {
1906 struct cs4297a_state *s =
1907 (struct cs4297a_state *) file->private_data;
1908 unsigned long flags;
1909 unsigned int mask = 0;
1910
1911 CS_DBGOUT(CS_FUNCTION | CS_WAVE_WRITE | CS_WAVE_READ, 4,
1912 printk(KERN_INFO "cs4297a: cs4297a_poll()+\n"));
1913 VALIDATE_STATE(s);
1914 if (file->f_mode & FMODE_WRITE) {
1915 CS_DBGOUT(CS_FUNCTION | CS_WAVE_WRITE | CS_WAVE_READ, 4,
1916 printk(KERN_INFO
1917 "cs4297a: cs4297a_poll() wait on FMODE_WRITE\n"));
1918 if(!s->dma_dac.ready && prog_dmabuf_dac(s))
1919 return 0;
1920 poll_wait(file, &s->dma_dac.wait, wait);
1921 }
1922 if (file->f_mode & FMODE_READ) {
1923 CS_DBGOUT(CS_FUNCTION | CS_WAVE_WRITE | CS_WAVE_READ, 4,
1924 printk(KERN_INFO
1925 "cs4297a: cs4297a_poll() wait on FMODE_READ\n"));
1926 if(!s->dma_dac.ready && prog_dmabuf_adc(s))
1927 return 0;
1928 poll_wait(file, &s->dma_adc.wait, wait);
1929 }
1930 spin_lock_irqsave(&s->lock, flags);
1931 cs4297a_update_ptr(s,CS_FALSE);
1932 if (file->f_mode & FMODE_WRITE) {
1933 if (s->dma_dac.mapped) {
1934 if (s->dma_dac.count >=
1935 (signed) s->dma_dac.fragsize) {
1936 if (s->dma_dac.wakeup)
1937 mask |= POLLOUT | POLLWRNORM;
1938 else
1939 mask = 0;
1940 s->dma_dac.wakeup = 0;
1941 }
1942 } else {
1943 if ((signed) (s->dma_dac.sbufsz/2) >= s->dma_dac.count)
1944 mask |= POLLOUT | POLLWRNORM;
1945 }
1946 } else if (file->f_mode & FMODE_READ) {
1947 if (s->dma_adc.mapped) {
1948 if (s->dma_adc.count >= (signed) s->dma_adc.fragsize)
1949 mask |= POLLIN | POLLRDNORM;
1950 } else {
1951 if (s->dma_adc.count > 0)
1952 mask |= POLLIN | POLLRDNORM;
1953 }
1954 }
1955 spin_unlock_irqrestore(&s->lock, flags);
1956 CS_DBGOUT(CS_FUNCTION | CS_WAVE_WRITE | CS_WAVE_READ, 4,
1957 printk(KERN_INFO "cs4297a: cs4297a_poll()- 0x%.8x\n",
1958 mask));
1959 return mask;
1960 }
1961
1962
1963 static int cs4297a_mmap(struct file *file, struct vm_area_struct *vma)
1964 {
1965 /* XXXKW currently no mmap support */
1966 return -EINVAL;
1967 return 0;
1968 }
1969
1970
1971 static int cs4297a_ioctl(struct file *file,
1972 unsigned int cmd, unsigned long arg)
1973 {
1974 struct cs4297a_state *s =
1975 (struct cs4297a_state *) file->private_data;
1976 unsigned long flags;
1977 audio_buf_info abinfo;
1978 count_info cinfo;
1979 int val, mapped, ret;
1980
1981 CS_DBGOUT(CS_FUNCTION|CS_IOCTL, 4, printk(KERN_INFO
1982 "cs4297a: cs4297a_ioctl(): file=0x%.8x cmd=0x%.8x\n",
1983 (unsigned) file, cmd));
1984 #if CSDEBUG
1985 cs_printioctl(cmd);
1986 #endif
1987 VALIDATE_STATE(s);
1988 mapped = ((file->f_mode & FMODE_WRITE) && s->dma_dac.mapped) ||
1989 ((file->f_mode & FMODE_READ) && s->dma_adc.mapped);
1990 switch (cmd) {
1991 case OSS_GETVERSION:
1992 CS_DBGOUT(CS_IOCTL | CS_PARMS, 4, printk(KERN_INFO
1993 "cs4297a: cs4297a_ioctl(): SOUND_VERSION=0x%.8x\n",
1994 SOUND_VERSION));
1995 return put_user(SOUND_VERSION, (int *) arg);
1996
1997 case SNDCTL_DSP_SYNC:
1998 CS_DBGOUT(CS_IOCTL, 4, printk(KERN_INFO
1999 "cs4297a: cs4297a_ioctl(): DSP_SYNC\n"));
2000 if (file->f_mode & FMODE_WRITE)
2001 return drain_dac(s,
2002 0 /*file->f_flags & O_NONBLOCK */
2003 );
2004 return 0;
2005
2006 case SNDCTL_DSP_SETDUPLEX:
2007 return 0;
2008
2009 case SNDCTL_DSP_GETCAPS:
2010 return put_user(DSP_CAP_DUPLEX | DSP_CAP_REALTIME |
2011 DSP_CAP_TRIGGER | DSP_CAP_MMAP,
2012 (int *) arg);
2013
2014 case SNDCTL_DSP_RESET:
2015 CS_DBGOUT(CS_IOCTL, 4, printk(KERN_INFO
2016 "cs4297a: cs4297a_ioctl(): DSP_RESET\n"));
2017 if (file->f_mode & FMODE_WRITE) {
2018 stop_dac(s);
2019 synchronize_irq(s->irq);
2020 s->dma_dac.count = s->dma_dac.total_bytes =
2021 s->dma_dac.blocks = s->dma_dac.wakeup = 0;
2022 s->dma_dac.swptr = s->dma_dac.hwptr =
2023 (int)(((__raw_readq(SS_CSR(R_SER_DMA_CUR_DSCR_ADDR_TX)) & M_DMA_CURDSCR_ADDR) -
2024 s->dma_dac.descrtab_phys) / sizeof(serdma_descr_t));
2025 }
2026 if (file->f_mode & FMODE_READ) {
2027 stop_adc(s);
2028 synchronize_irq(s->irq);
2029 s->dma_adc.count = s->dma_adc.total_bytes =
2030 s->dma_adc.blocks = s->dma_dac.wakeup = 0;
2031 s->dma_adc.swptr = s->dma_adc.hwptr =
2032 (int)(((__raw_readq(SS_CSR(R_SER_DMA_CUR_DSCR_ADDR_RX)) & M_DMA_CURDSCR_ADDR) -
2033 s->dma_adc.descrtab_phys) / sizeof(serdma_descr_t));
2034 }
2035 return 0;
2036
2037 case SNDCTL_DSP_SPEED:
2038 if (get_user(val, (int *) arg))
2039 return -EFAULT;
2040 CS_DBGOUT(CS_IOCTL | CS_PARMS, 4, printk(KERN_INFO
2041 "cs4297a: cs4297a_ioctl(): DSP_SPEED val=%d -> 48000\n", val));
2042 val = 48000;
2043 return put_user(val, (int *) arg);
2044
2045 case SNDCTL_DSP_STEREO:
2046 if (get_user(val, (int *) arg))
2047 return -EFAULT;
2048 CS_DBGOUT(CS_IOCTL | CS_PARMS, 4, printk(KERN_INFO
2049 "cs4297a: cs4297a_ioctl(): DSP_STEREO val=%d\n", val));
2050 if (file->f_mode & FMODE_READ) {
2051 stop_adc(s);
2052 s->dma_adc.ready = 0;
2053 s->prop_adc.channels = val ? 2 : 1;
2054 }
2055 if (file->f_mode & FMODE_WRITE) {
2056 stop_dac(s);
2057 s->dma_dac.ready = 0;
2058 s->prop_dac.channels = val ? 2 : 1;
2059 }
2060 return 0;
2061
2062 case SNDCTL_DSP_CHANNELS:
2063 if (get_user(val, (int *) arg))
2064 return -EFAULT;
2065 CS_DBGOUT(CS_IOCTL | CS_PARMS, 4, printk(KERN_INFO
2066 "cs4297a: cs4297a_ioctl(): DSP_CHANNELS val=%d\n",
2067 val));
2068 if (val != 0) {
2069 if (file->f_mode & FMODE_READ) {
2070 stop_adc(s);
2071 s->dma_adc.ready = 0;
2072 if (val >= 2)
2073 s->prop_adc.channels = 2;
2074 else
2075 s->prop_adc.channels = 1;
2076 }
2077 if (file->f_mode & FMODE_WRITE) {
2078 stop_dac(s);
2079 s->dma_dac.ready = 0;
2080 if (val >= 2)
2081 s->prop_dac.channels = 2;
2082 else
2083 s->prop_dac.channels = 1;
2084 }
2085 }
2086
2087 if (file->f_mode & FMODE_WRITE)
2088 val = s->prop_dac.channels;
2089 else if (file->f_mode & FMODE_READ)
2090 val = s->prop_adc.channels;
2091
2092 return put_user(val, (int *) arg);
2093
2094 case SNDCTL_DSP_GETFMTS: // Returns a mask
2095 CS_DBGOUT(CS_IOCTL | CS_PARMS, 4, printk(KERN_INFO
2096 "cs4297a: cs4297a_ioctl(): DSP_GETFMT val=0x%.8x\n",
2097 AFMT_S16_LE | AFMT_U16_LE | AFMT_S8 |
2098 AFMT_U8));
2099 return put_user(AFMT_S16_LE | AFMT_U16_LE | AFMT_S8 |
2100 AFMT_U8, (int *) arg);
2101
2102 case SNDCTL_DSP_SETFMT:
2103 if (get_user(val, (int *) arg))
2104 return -EFAULT;
2105 CS_DBGOUT(CS_IOCTL | CS_PARMS, 4, printk(KERN_INFO
2106 "cs4297a: cs4297a_ioctl(): DSP_SETFMT val=0x%.8x\n",
2107 val));
2108 if (val != AFMT_QUERY) {
2109 if (file->f_mode & FMODE_READ) {
2110 stop_adc(s);
2111 s->dma_adc.ready = 0;
2112 if (val != AFMT_S16_LE
2113 && val != AFMT_U16_LE && val != AFMT_S8
2114 && val != AFMT_U8)
2115 val = AFMT_U8;
2116 s->prop_adc.fmt = val;
2117 s->prop_adc.fmt_original = s->prop_adc.fmt;
2118 }
2119 if (file->f_mode & FMODE_WRITE) {
2120 stop_dac(s);
2121 s->dma_dac.ready = 0;
2122 if (val != AFMT_S16_LE
2123 && val != AFMT_U16_LE && val != AFMT_S8
2124 && val != AFMT_U8)
2125 val = AFMT_U8;
2126 s->prop_dac.fmt = val;
2127 s->prop_dac.fmt_original = s->prop_dac.fmt;
2128 }
2129 } else {
2130 if (file->f_mode & FMODE_WRITE)
2131 val = s->prop_dac.fmt_original;
2132 else if (file->f_mode & FMODE_READ)
2133 val = s->prop_adc.fmt_original;
2134 }
2135 CS_DBGOUT(CS_IOCTL | CS_PARMS, 4, printk(KERN_INFO
2136 "cs4297a: cs4297a_ioctl(): DSP_SETFMT return val=0x%.8x\n",
2137 val));
2138 return put_user(val, (int *) arg);
2139
2140 case SNDCTL_DSP_POST:
2141 CS_DBGOUT(CS_IOCTL, 4, printk(KERN_INFO
2142 "cs4297a: cs4297a_ioctl(): DSP_POST\n"));
2143 return 0;
2144
2145 case SNDCTL_DSP_GETTRIGGER:
2146 val = 0;
2147 if (file->f_mode & s->ena & FMODE_READ)
2148 val |= PCM_ENABLE_INPUT;
2149 if (file->f_mode & s->ena & FMODE_WRITE)
2150 val |= PCM_ENABLE_OUTPUT;
2151 return put_user(val, (int *) arg);
2152
2153 case SNDCTL_DSP_SETTRIGGER:
2154 if (get_user(val, (int *) arg))
2155 return -EFAULT;
2156 if (file->f_mode & FMODE_READ) {
2157 if (val & PCM_ENABLE_INPUT) {
2158 if (!s->dma_adc.ready
2159 && (ret = prog_dmabuf_adc(s)))
2160 return ret;
2161 start_adc(s);
2162 } else
2163 stop_adc(s);
2164 }
2165 if (file->f_mode & FMODE_WRITE) {
2166 if (val & PCM_ENABLE_OUTPUT) {
2167 if (!s->dma_dac.ready
2168 && (ret = prog_dmabuf_dac(s)))
2169 return ret;
2170 start_dac(s);
2171 } else
2172 stop_dac(s);
2173 }
2174 return 0;
2175
2176 case SNDCTL_DSP_GETOSPACE:
2177 if (!(file->f_mode & FMODE_WRITE))
2178 return -EINVAL;
2179 if (!s->dma_dac.ready && (val = prog_dmabuf_dac(s)))
2180 return val;
2181 spin_lock_irqsave(&s->lock, flags);
2182 cs4297a_update_ptr(s,CS_FALSE);
2183 abinfo.fragsize = s->dma_dac.fragsize;
2184 if (s->dma_dac.mapped)
2185 abinfo.bytes = s->dma_dac.sbufsz;
2186 else
2187 abinfo.bytes =
2188 s->dma_dac.sbufsz - s->dma_dac.count;
2189 abinfo.fragstotal = s->dma_dac.numfrag;
2190 abinfo.fragments = abinfo.bytes >> s->dma_dac.fragshift;
2191 CS_DBGOUT(CS_FUNCTION | CS_PARMS, 4, printk(KERN_INFO
2192 "cs4297a: cs4297a_ioctl(): GETOSPACE .fragsize=%d .bytes=%d .fragstotal=%d .fragments=%d\n",
2193 abinfo.fragsize,abinfo.bytes,abinfo.fragstotal,
2194 abinfo.fragments));
2195 spin_unlock_irqrestore(&s->lock, flags);
2196 return copy_to_user((void *) arg, &abinfo,
2197 sizeof(abinfo)) ? -EFAULT : 0;
2198
2199 case SNDCTL_DSP_GETISPACE:
2200 if (!(file->f_mode & FMODE_READ))
2201 return -EINVAL;
2202 if (!s->dma_adc.ready && (val = prog_dmabuf_adc(s)))
2203 return val;
2204 spin_lock_irqsave(&s->lock, flags);
2205 cs4297a_update_ptr(s,CS_FALSE);
2206 if (s->conversion) {
2207 abinfo.fragsize = s->dma_adc.fragsize / 2;
2208 abinfo.bytes = s->dma_adc.count / 2;
2209 abinfo.fragstotal = s->dma_adc.numfrag;
2210 abinfo.fragments =
2211 abinfo.bytes >> (s->dma_adc.fragshift - 1);
2212 } else {
2213 abinfo.fragsize = s->dma_adc.fragsize;
2214 abinfo.bytes = s->dma_adc.count;
2215 abinfo.fragstotal = s->dma_adc.numfrag;
2216 abinfo.fragments =
2217 abinfo.bytes >> s->dma_adc.fragshift;
2218 }
2219 spin_unlock_irqrestore(&s->lock, flags);
2220 return copy_to_user((void *) arg, &abinfo,
2221 sizeof(abinfo)) ? -EFAULT : 0;
2222
2223 case SNDCTL_DSP_NONBLOCK:
2224 spin_lock(&file->f_lock);
2225 file->f_flags |= O_NONBLOCK;
2226 spin_unlock(&file->f_lock);
2227 return 0;
2228
2229 case SNDCTL_DSP_GETODELAY:
2230 if (!(file->f_mode & FMODE_WRITE))
2231 return -EINVAL;
2232 if(!s->dma_dac.ready && prog_dmabuf_dac(s))
2233 return 0;
2234 spin_lock_irqsave(&s->lock, flags);
2235 cs4297a_update_ptr(s,CS_FALSE);
2236 val = s->dma_dac.count;
2237 spin_unlock_irqrestore(&s->lock, flags);
2238 return put_user(val, (int *) arg);
2239
2240 case SNDCTL_DSP_GETIPTR:
2241 if (!(file->f_mode & FMODE_READ))
2242 return -EINVAL;
2243 if(!s->dma_adc.ready && prog_dmabuf_adc(s))
2244 return 0;
2245 spin_lock_irqsave(&s->lock, flags);
2246 cs4297a_update_ptr(s,CS_FALSE);
2247 cinfo.bytes = s->dma_adc.total_bytes;
2248 if (s->dma_adc.mapped) {
2249 cinfo.blocks =
2250 (cinfo.bytes >> s->dma_adc.fragshift) -
2251 s->dma_adc.blocks;
2252 s->dma_adc.blocks =
2253 cinfo.bytes >> s->dma_adc.fragshift;
2254 } else {
2255 if (s->conversion) {
2256 cinfo.blocks =
2257 s->dma_adc.count /
2258 2 >> (s->dma_adc.fragshift - 1);
2259 } else
2260 cinfo.blocks =
2261 s->dma_adc.count >> s->dma_adc.
2262 fragshift;
2263 }
2264 if (s->conversion)
2265 cinfo.ptr = s->dma_adc.hwptr / 2;
2266 else
2267 cinfo.ptr = s->dma_adc.hwptr;
2268 if (s->dma_adc.mapped)
2269 s->dma_adc.count &= s->dma_adc.fragsize - 1;
2270 spin_unlock_irqrestore(&s->lock, flags);
2271 return copy_to_user((void *) arg, &cinfo, sizeof(cinfo)) ? -EFAULT : 0;
2272
2273 case SNDCTL_DSP_GETOPTR:
2274 if (!(file->f_mode & FMODE_WRITE))
2275 return -EINVAL;
2276 if(!s->dma_dac.ready && prog_dmabuf_dac(s))
2277 return 0;
2278 spin_lock_irqsave(&s->lock, flags);
2279 cs4297a_update_ptr(s,CS_FALSE);
2280 cinfo.bytes = s->dma_dac.total_bytes;
2281 if (s->dma_dac.mapped) {
2282 cinfo.blocks =
2283 (cinfo.bytes >> s->dma_dac.fragshift) -
2284 s->dma_dac.blocks;
2285 s->dma_dac.blocks =
2286 cinfo.bytes >> s->dma_dac.fragshift;
2287 } else {
2288 cinfo.blocks =
2289 s->dma_dac.count >> s->dma_dac.fragshift;
2290 }
2291 cinfo.ptr = s->dma_dac.hwptr;
2292 if (s->dma_dac.mapped)
2293 s->dma_dac.count &= s->dma_dac.fragsize - 1;
2294 spin_unlock_irqrestore(&s->lock, flags);
2295 return copy_to_user((void *) arg, &cinfo, sizeof(cinfo)) ? -EFAULT : 0;
2296
2297 case SNDCTL_DSP_GETBLKSIZE:
2298 if (file->f_mode & FMODE_WRITE) {
2299 if ((val = prog_dmabuf_dac(s)))
2300 return val;
2301 return put_user(s->dma_dac.fragsize, (int *) arg);
2302 }
2303 if ((val = prog_dmabuf_adc(s)))
2304 return val;
2305 if (s->conversion)
2306 return put_user(s->dma_adc.fragsize / 2,
2307 (int *) arg);
2308 else
2309 return put_user(s->dma_adc.fragsize, (int *) arg);
2310
2311 case SNDCTL_DSP_SETFRAGMENT:
2312 if (get_user(val, (int *) arg))
2313 return -EFAULT;
2314 return 0; // Say OK, but do nothing.
2315
2316 case SNDCTL_DSP_SUBDIVIDE:
2317 if ((file->f_mode & FMODE_READ && s->dma_adc.subdivision)
2318 || (file->f_mode & FMODE_WRITE
2319 && s->dma_dac.subdivision)) return -EINVAL;
2320 if (get_user(val, (int *) arg))
2321 return -EFAULT;
2322 if (val != 1 && val != 2 && val != 4)
2323 return -EINVAL;
2324 if (file->f_mode & FMODE_READ)
2325 s->dma_adc.subdivision = val;
2326 else if (file->f_mode & FMODE_WRITE)
2327 s->dma_dac.subdivision = val;
2328 return 0;
2329
2330 case SOUND_PCM_READ_RATE:
2331 if (file->f_mode & FMODE_READ)
2332 return put_user(s->prop_adc.rate, (int *) arg);
2333 else if (file->f_mode & FMODE_WRITE)
2334 return put_user(s->prop_dac.rate, (int *) arg);
2335
2336 case SOUND_PCM_READ_CHANNELS:
2337 if (file->f_mode & FMODE_READ)
2338 return put_user(s->prop_adc.channels, (int *) arg);
2339 else if (file->f_mode & FMODE_WRITE)
2340 return put_user(s->prop_dac.channels, (int *) arg);
2341
2342 case SOUND_PCM_READ_BITS:
2343 if (file->f_mode & FMODE_READ)
2344 return
2345 put_user(
2346 (s->prop_adc.
2347 fmt & (AFMT_S8 | AFMT_U8)) ? 8 : 16,
2348 (int *) arg);
2349 else if (file->f_mode & FMODE_WRITE)
2350 return
2351 put_user(
2352 (s->prop_dac.
2353 fmt & (AFMT_S8 | AFMT_U8)) ? 8 : 16,
2354 (int *) arg);
2355
2356 case SOUND_PCM_WRITE_FILTER:
2357 case SNDCTL_DSP_SETSYNCRO:
2358 case SOUND_PCM_READ_FILTER:
2359 return -EINVAL;
2360 }
2361 return mixer_ioctl(s, cmd, arg);
2362 }
2363
2364 static long cs4297a_unlocked_ioctl(struct file *file, u_int cmd, u_long arg)
2365 {
2366 int ret;
2367
2368 mutex_lock(&swarm_cs4297a_mutex);
2369 ret = cs4297a_ioctl(file, cmd, arg);
2370 mutex_unlock(&swarm_cs4297a_mutex);
2371
2372 return ret;
2373 }
2374
2375 static int cs4297a_release(struct inode *inode, struct file *file)
2376 {
2377 struct cs4297a_state *s =
2378 (struct cs4297a_state *) file->private_data;
2379
2380 CS_DBGOUT(CS_FUNCTION | CS_RELEASE, 2, printk(KERN_INFO
2381 "cs4297a: cs4297a_release(): inode=0x%.8x file=0x%.8x f_mode=0x%x\n",
2382 (unsigned) inode, (unsigned) file, file->f_mode));
2383 VALIDATE_STATE(s);
2384
2385 if (file->f_mode & FMODE_WRITE) {
2386 drain_dac(s, file->f_flags & O_NONBLOCK);
2387 mutex_lock(&s->open_sem_dac);
2388 stop_dac(s);
2389 dealloc_dmabuf(s, &s->dma_dac);
2390 s->open_mode &= ~FMODE_WRITE;
2391 mutex_unlock(&s->open_sem_dac);
2392 wake_up(&s->open_wait_dac);
2393 }
2394 if (file->f_mode & FMODE_READ) {
2395 drain_adc(s, file->f_flags & O_NONBLOCK);
2396 mutex_lock(&s->open_sem_adc);
2397 stop_adc(s);
2398 dealloc_dmabuf(s, &s->dma_adc);
2399 s->open_mode &= ~FMODE_READ;
2400 mutex_unlock(&s->open_sem_adc);
2401 wake_up(&s->open_wait_adc);
2402 }
2403 return 0;
2404 }
2405
2406 static int cs4297a_locked_open(struct inode *inode, struct file *file)
2407 {
2408 int minor = iminor(inode);
2409 struct cs4297a_state *s=NULL;
2410 struct list_head *entry;
2411
2412 CS_DBGOUT(CS_FUNCTION | CS_OPEN, 2, printk(KERN_INFO
2413 "cs4297a: cs4297a_open(): inode=0x%.8x file=0x%.8x f_mode=0x%x\n",
2414 (unsigned) inode, (unsigned) file, file->f_mode));
2415 CS_DBGOUT(CS_FUNCTION | CS_OPEN, 2, printk(KERN_INFO
2416 "cs4297a: status = %08x\n", (int)__raw_readq(SS_CSR(R_SER_STATUS_DEBUG))));
2417
2418 list_for_each(entry, &cs4297a_devs)
2419 {
2420 s = list_entry(entry, struct cs4297a_state, list);
2421
2422 if (!((s->dev_audio ^ minor) & ~0xf))
2423 break;
2424 }
2425 if (entry == &cs4297a_devs)
2426 return -ENODEV;
2427 if (!s) {
2428 CS_DBGOUT(CS_FUNCTION | CS_OPEN, 2, printk(KERN_INFO
2429 "cs4297a: cs4297a_open(): Error - unable to find audio state struct\n"));
2430 return -ENODEV;
2431 }
2432 VALIDATE_STATE(s);
2433 file->private_data = s;
2434
2435 // wait for device to become free
2436 if (!(file->f_mode & (FMODE_WRITE | FMODE_READ))) {
2437 CS_DBGOUT(CS_FUNCTION | CS_OPEN | CS_ERROR, 2, printk(KERN_INFO
2438 "cs4297a: cs4297a_open(): Error - must open READ and/or WRITE\n"));
2439 return -ENODEV;
2440 }
2441 if (file->f_mode & FMODE_WRITE) {
2442 if (__raw_readq(SS_CSR(R_SER_DMA_DSCR_COUNT_TX)) != 0) {
2443 printk(KERN_ERR "cs4297a: TX pipe needs to drain\n");
2444 while (__raw_readq(SS_CSR(R_SER_DMA_DSCR_COUNT_TX)))
2445 ;
2446 }
2447
2448 mutex_lock(&s->open_sem_dac);
2449 while (s->open_mode & FMODE_WRITE) {
2450 if (file->f_flags & O_NONBLOCK) {
2451 mutex_unlock(&s->open_sem_dac);
2452 return -EBUSY;
2453 }
2454 mutex_unlock(&s->open_sem_dac);
2455 interruptible_sleep_on(&s->open_wait_dac);
2456
2457 if (signal_pending(current)) {
2458 printk("open - sig pending\n");
2459 return -ERESTARTSYS;
2460 }
2461 mutex_lock(&s->open_sem_dac);
2462 }
2463 }
2464 if (file->f_mode & FMODE_READ) {
2465 mutex_lock(&s->open_sem_adc);
2466 while (s->open_mode & FMODE_READ) {
2467 if (file->f_flags & O_NONBLOCK) {
2468 mutex_unlock(&s->open_sem_adc);
2469 return -EBUSY;
2470 }
2471 mutex_unlock(&s->open_sem_adc);
2472 interruptible_sleep_on(&s->open_wait_adc);
2473
2474 if (signal_pending(current)) {
2475 printk("open - sig pending\n");
2476 return -ERESTARTSYS;
2477 }
2478 mutex_lock(&s->open_sem_adc);
2479 }
2480 }
2481 s->open_mode |= file->f_mode & (FMODE_READ | FMODE_WRITE);
2482 if (file->f_mode & FMODE_READ) {
2483 s->prop_adc.fmt = AFMT_S16_BE;
2484 s->prop_adc.fmt_original = s->prop_adc.fmt;
2485 s->prop_adc.channels = 2;
2486 s->prop_adc.rate = 48000;
2487 s->conversion = 0;
2488 s->ena &= ~FMODE_READ;
2489 s->dma_adc.ossfragshift = s->dma_adc.ossmaxfrags =
2490 s->dma_adc.subdivision = 0;
2491 mutex_unlock(&s->open_sem_adc);
2492
2493 if (prog_dmabuf_adc(s)) {
2494 CS_DBGOUT(CS_OPEN | CS_ERROR, 2, printk(KERN_ERR
2495 "cs4297a: adc Program dmabufs failed.\n"));
2496 cs4297a_release(inode, file);
2497 return -ENOMEM;
2498 }
2499 }
2500 if (file->f_mode & FMODE_WRITE) {
2501 s->prop_dac.fmt = AFMT_S16_BE;
2502 s->prop_dac.fmt_original = s->prop_dac.fmt;
2503 s->prop_dac.channels = 2;
2504 s->prop_dac.rate = 48000;
2505 s->conversion = 0;
2506 s->ena &= ~FMODE_WRITE;
2507 s->dma_dac.ossfragshift = s->dma_dac.ossmaxfrags =
2508 s->dma_dac.subdivision = 0;
2509 mutex_unlock(&s->open_sem_dac);
2510
2511 if (prog_dmabuf_dac(s)) {
2512 CS_DBGOUT(CS_OPEN | CS_ERROR, 2, printk(KERN_ERR
2513 "cs4297a: dac Program dmabufs failed.\n"));
2514 cs4297a_release(inode, file);
2515 return -ENOMEM;
2516 }
2517 }
2518 CS_DBGOUT(CS_FUNCTION | CS_OPEN, 2,
2519 printk(KERN_INFO "cs4297a: cs4297a_open()- 0\n"));
2520 return nonseekable_open(inode, file);
2521 }
2522
2523 static int cs4297a_open(struct inode *inode, struct file *file)
2524 {
2525 int ret;
2526
2527 mutex_lock(&swarm_cs4297a_mutex);
2528 ret = cs4297a_open(inode, file);
2529 mutex_unlock(&swarm_cs4297a_mutex);
2530
2531 return ret;
2532 }
2533
2534 // ******************************************************************************************
2535 // Wave (audio) file operations struct.
2536 // ******************************************************************************************
2537 static const struct file_operations cs4297a_audio_fops = {
2538 .owner = THIS_MODULE,
2539 .llseek = no_llseek,
2540 .read = cs4297a_read,
2541 .write = cs4297a_write,
2542 .poll = cs4297a_poll,
2543 .unlocked_ioctl = cs4297a_unlocked_ioctl,
2544 .mmap = cs4297a_mmap,
2545 .open = cs4297a_open,
2546 .release = cs4297a_release,
2547 };
2548
2549 static void cs4297a_interrupt(int irq, void *dev_id)
2550 {
2551 struct cs4297a_state *s = (struct cs4297a_state *) dev_id;
2552 u32 status;
2553
2554 status = __raw_readq(SS_CSR(R_SER_STATUS_DEBUG));
2555
2556 CS_DBGOUT(CS_INTERRUPT, 6, printk(KERN_INFO
2557 "cs4297a: cs4297a_interrupt() HISR=0x%.8x\n", status));
2558
2559 #if 0
2560 /* XXXKW what check *should* be done here? */
2561 if (!(status & (M_SYNCSER_RX_EOP_COUNT | M_SYNCSER_RX_OVERRUN | M_SYNCSER_RX_SYNC_ERR))) {
2562 status = __raw_readq(SS_CSR(R_SER_STATUS));
2563 printk(KERN_ERR "cs4297a: unexpected interrupt (status %08x)\n", status);
2564 return;
2565 }
2566 #endif
2567
2568 if (status & M_SYNCSER_RX_SYNC_ERR) {
2569 status = __raw_readq(SS_CSR(R_SER_STATUS));
2570 printk(KERN_ERR "cs4297a: rx sync error (status %08x)\n", status);
2571 return;
2572 }
2573
2574 if (status & M_SYNCSER_RX_OVERRUN) {
2575 int newptr, i;
2576 s->stats.rx_ovrrn++;
2577 printk(KERN_ERR "cs4297a: receive FIFO overrun\n");
2578
2579 /* Fix things up: get the receive descriptor pool
2580 clean and give them back to the hardware */
2581 while (__raw_readq(SS_CSR(R_SER_DMA_DSCR_COUNT_RX)))
2582 ;
2583 newptr = (unsigned) (((__raw_readq(SS_CSR(R_SER_DMA_CUR_DSCR_ADDR_RX)) & M_DMA_CURDSCR_ADDR) -
2584 s->dma_adc.descrtab_phys) / sizeof(serdma_descr_t));
2585 for (i=0; i<DMA_DESCR; i++) {
2586 s->dma_adc.descrtab[i].descr_a &= ~M_DMA_SERRX_SOP;
2587 }
2588 s->dma_adc.swptr = s->dma_adc.hwptr = newptr;
2589 s->dma_adc.count = 0;
2590 s->dma_adc.sb_swptr = s->dma_adc.sb_hwptr = s->dma_adc.sample_buf;
2591 __raw_writeq(DMA_DESCR, SS_CSR(R_SER_DMA_DSCR_COUNT_RX));
2592 }
2593
2594 spin_lock(&s->lock);
2595 cs4297a_update_ptr(s,CS_TRUE);
2596 spin_unlock(&s->lock);
2597
2598 CS_DBGOUT(CS_INTERRUPT, 6, printk(KERN_INFO
2599 "cs4297a: cs4297a_interrupt()-\n"));
2600 }
2601
2602 #if 0
2603 static struct initvol {
2604 int mixch;
2605 int vol;
2606 } initvol[] __initdata = {
2607
2608 {SOUND_MIXER_WRITE_VOLUME, 0x4040},
2609 {SOUND_MIXER_WRITE_PCM, 0x4040},
2610 {SOUND_MIXER_WRITE_SYNTH, 0x4040},
2611 {SOUND_MIXER_WRITE_CD, 0x4040},
2612 {SOUND_MIXER_WRITE_LINE, 0x4040},
2613 {SOUND_MIXER_WRITE_LINE1, 0x4040},
2614 {SOUND_MIXER_WRITE_RECLEV, 0x0000},
2615 {SOUND_MIXER_WRITE_SPEAKER, 0x4040},
2616 {SOUND_MIXER_WRITE_MIC, 0x0000}
2617 };
2618 #endif
2619
2620 static int __init cs4297a_init(void)
2621 {
2622 struct cs4297a_state *s;
2623 u32 pwr, id;
2624 mm_segment_t fs;
2625 int rval;
2626 #ifndef CONFIG_BCM_CS4297A_CSWARM
2627 u64 cfg;
2628 int mdio_val;
2629 #endif
2630
2631 CS_DBGOUT(CS_INIT | CS_FUNCTION, 2, printk(KERN_INFO
2632 "cs4297a: cs4297a_init_module()+ \n"));
2633
2634 #ifndef CONFIG_BCM_CS4297A_CSWARM
2635 mdio_val = __raw_readq(KSEG1 + A_MAC_REGISTER(2, R_MAC_MDIO)) &
2636 (M_MAC_MDIO_DIR|M_MAC_MDIO_OUT);
2637
2638 /* Check syscfg for synchronous serial on port 1 */
2639 cfg = __raw_readq(KSEG1 + A_SCD_SYSTEM_CFG);
2640 if (!(cfg & M_SYS_SER1_ENABLE)) {
2641 __raw_writeq(cfg | M_SYS_SER1_ENABLE, KSEG1+A_SCD_SYSTEM_CFG);
2642 cfg = __raw_readq(KSEG1 + A_SCD_SYSTEM_CFG);
2643 if (!(cfg & M_SYS_SER1_ENABLE)) {
2644 printk(KERN_INFO "cs4297a: serial port 1 not configured for synchronous operation\n");
2645 return -1;
2646 }
2647
2648 printk(KERN_INFO "cs4297a: serial port 1 switching to synchronous operation\n");
2649
2650 /* Force the codec (on SWARM) to reset by clearing
2651 GENO, preserving MDIO (no effect on CSWARM) */
2652 __raw_writeq(mdio_val, KSEG1+A_MAC_REGISTER(2, R_MAC_MDIO));
2653 udelay(10);
2654 }
2655
2656 /* Now set GENO */
2657 __raw_writeq(mdio_val | M_MAC_GENC, KSEG1+A_MAC_REGISTER(2, R_MAC_MDIO));
2658 /* Give the codec some time to finish resetting (start the bit clock) */
2659 udelay(100);
2660 #endif
2661
2662 if (!(s = kzalloc(sizeof(struct cs4297a_state), GFP_KERNEL))) {
2663 CS_DBGOUT(CS_ERROR, 1, printk(KERN_ERR
2664 "cs4297a: probe() no memory for state struct.\n"));
2665 return -1;
2666 }
2667 s->magic = CS4297a_MAGIC;
2668 init_waitqueue_head(&s->dma_adc.wait);
2669 init_waitqueue_head(&s->dma_dac.wait);
2670 init_waitqueue_head(&s->dma_adc.reg_wait);
2671 init_waitqueue_head(&s->dma_dac.reg_wait);
2672 init_waitqueue_head(&s->open_wait);
2673 init_waitqueue_head(&s->open_wait_adc);
2674 init_waitqueue_head(&s->open_wait_dac);
2675 mutex_init(&s->open_sem_adc);
2676 mutex_init(&s->open_sem_dac);
2677 spin_lock_init(&s->lock);
2678
2679 s->irq = K_INT_SER_1;
2680
2681 if (request_irq
2682 (s->irq, cs4297a_interrupt, 0, "Crystal CS4297a", s)) {
2683 CS_DBGOUT(CS_INIT | CS_ERROR, 1,
2684 printk(KERN_ERR "cs4297a: irq %u in use\n", s->irq));
2685 goto err_irq;
2686 }
2687 if ((s->dev_audio = register_sound_dsp(&cs4297a_audio_fops, -1)) <
2688 0) {
2689 CS_DBGOUT(CS_INIT | CS_ERROR, 1, printk(KERN_ERR
2690 "cs4297a: probe() register_sound_dsp() failed.\n"));
2691 goto err_dev1;
2692 }
2693 if ((s->dev_mixer = register_sound_mixer(&cs4297a_mixer_fops, -1)) <
2694 0) {
2695 CS_DBGOUT(CS_INIT | CS_ERROR, 1, printk(KERN_ERR
2696 "cs4297a: probe() register_sound_mixer() failed.\n"));
2697 goto err_dev2;
2698 }
2699
2700 if (ser_init(s) || dma_init(s)) {
2701 CS_DBGOUT(CS_INIT | CS_ERROR, 1, printk(KERN_ERR
2702 "cs4297a: ser_init failed.\n"));
2703 goto err_dev3;
2704 }
2705
2706 do {
2707 udelay(4000);
2708 rval = cs4297a_read_ac97(s, AC97_POWER_CONTROL, &pwr);
2709 } while (!rval && (pwr != 0xf));
2710
2711 if (!rval) {
2712 char *sb1250_duart_present;
2713
2714 fs = get_fs();
2715 set_fs(KERNEL_DS);
2716 #if 0
2717 val = SOUND_MASK_LINE;
2718 mixer_ioctl(s, SOUND_MIXER_WRITE_RECSRC, (unsigned long) &val);
2719 for (i = 0; i < ARRAY_SIZE(initvol); i++) {
2720 val = initvol[i].vol;
2721 mixer_ioctl(s, initvol[i].mixch, (unsigned long) &val);
2722 }
2723 // cs4297a_write_ac97(s, 0x18, 0x0808);
2724 #else
2725 // cs4297a_write_ac97(s, 0x5e, 0x180);
2726 cs4297a_write_ac97(s, 0x02, 0x0808);
2727 cs4297a_write_ac97(s, 0x18, 0x0808);
2728 #endif
2729 set_fs(fs);
2730
2731 list_add(&s->list, &cs4297a_devs);
2732
2733 cs4297a_read_ac97(s, AC97_VENDOR_ID1, &id);
2734
2735 sb1250_duart_present = symbol_get(sb1250_duart_present);
2736 if (sb1250_duart_present)
2737 sb1250_duart_present[1] = 0;
2738
2739 printk(KERN_INFO "cs4297a: initialized (vendor id = %x)\n", id);
2740
2741 CS_DBGOUT(CS_INIT | CS_FUNCTION, 2,
2742 printk(KERN_INFO "cs4297a: cs4297a_init_module()-\n"));
2743
2744 return 0;
2745 }
2746
2747 err_dev3:
2748 unregister_sound_mixer(s->dev_mixer);
2749 err_dev2:
2750 unregister_sound_dsp(s->dev_audio);
2751 err_dev1:
2752 free_irq(s->irq, s);
2753 err_irq:
2754 kfree(s);
2755
2756 printk(KERN_INFO "cs4297a: initialization failed\n");
2757
2758 return -1;
2759 }
2760
2761 static void __exit cs4297a_cleanup(void)
2762 {
2763 /*
2764 XXXKW
2765 disable_irq, free_irq
2766 drain DMA queue
2767 disable DMA
2768 disable TX/RX
2769 free memory
2770 */
2771 CS_DBGOUT(CS_INIT | CS_FUNCTION, 2,
2772 printk(KERN_INFO "cs4297a: cleanup_cs4297a() finished\n"));
2773 }
2774
2775 // ---------------------------------------------------------------------
2776
2777 MODULE_AUTHOR("Kip Walker, Broadcom Corp.");
2778 MODULE_DESCRIPTION("Cirrus Logic CS4297a Driver for Broadcom SWARM board");
2779
2780 // ---------------------------------------------------------------------
2781
2782 module_init(cs4297a_init);
2783 module_exit(cs4297a_cleanup);
Linux with added FPC-III support