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/ac97_codec.h>
73 #include <linux/pci.h>
74 #include <linux/bitops.h>
75 #include <linux/interrupt.h>
76 #include <linux/init.h>
77 #include <linux/poll.h>
78 #include <linux/mutex.h>
79 #include <linux/kernel.h>
80
81 #include <asm/byteorder.h>
82 #include <asm/dma.h>
83 #include <asm/io.h>
84 #include <asm/uaccess.h>
85
86 #include <asm/sibyte/sb1250_regs.h>
87 #include <asm/sibyte/sb1250_int.h>
88 #include <asm/sibyte/sb1250_dma.h>
89 #include <asm/sibyte/sb1250_scd.h>
90 #include <asm/sibyte/sb1250_syncser.h>
91 #include <asm/sibyte/sb1250_mac.h>
92 #include <asm/sibyte/sb1250.h>
93
94 struct cs4297a_state;
95
96 static DEFINE_MUTEX(swarm_cs4297a_mutex);
97 static void stop_dac(struct cs4297a_state *s);
98 static void stop_adc(struct cs4297a_state *s);
99 static void start_dac(struct cs4297a_state *s);
100 static void start_adc(struct cs4297a_state *s);
101 #undef OSS_DOCUMENTED_MIXER_SEMANTICS
102
103 // ---------------------------------------------------------------------
104
105 #define CS4297a_MAGIC 0xf00beef1
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).
113
114 //
115 // Turn on/off debugging compilation by commenting out "#define CSDEBUG"
116 //
117 #define CSDEBUG 0
118 #if CSDEBUG
119 #define CSDEBUG_INTERFACE 1
120 #else
121 #undef CSDEBUG_INTERFACE
122 #endif
123 //
124 // cs_debugmask areas
125 //
126 #define CS_INIT 0x00000001 // initialization and probe functions
127 #define CS_ERROR 0x00000002 // tmp debugging bit placeholder
128 #define CS_INTERRUPT 0x00000004 // interrupt handler (separate from all other)
129 #define CS_FUNCTION 0x00000008 // enter/leave functions
130 #define CS_WAVE_WRITE 0x00000010 // write information for wave
131 #define CS_WAVE_READ 0x00000020 // read information for wave
132 #define CS_AC97 0x00000040 // AC97 register access
133 #define CS_DESCR 0x00000080 // descriptor management
134 #define CS_OPEN 0x00000400 // all open functions in the driver
135 #define CS_RELEASE 0x00000800 // all release functions in the driver
136 #define CS_PARMS 0x00001000 // functional and operational parameters
137 #define CS_IOCTL 0x00002000 // ioctl (non-mixer)
138 #define CS_TMP 0x10000000 // tmp debug mask bit
139
140 //
141 // CSDEBUG is usual mode is set to 1, then use the
142 // cs_debuglevel and cs_debugmask to turn on or off debugging.
143 // Debug level of 1 has been defined to be kernel errors and info
144 // that should be printed on any released driver.
145 //
146 #if CSDEBUG
147 #define CS_DBGOUT(mask,level,x) if((cs_debuglevel >= (level)) && ((mask) & cs_debugmask) ) {x;}
148 #else
149 #define CS_DBGOUT(mask,level,x)
150 #endif
151
152 #if CSDEBUG
153 static unsigned long cs_debuglevel = 4; // levels range from 1-9
154 static unsigned long cs_debugmask = CS_INIT /*| CS_IOCTL*/;
155 module_param(cs_debuglevel, int, 0);
156 module_param(cs_debugmask, int, 0);
157 #endif
158 #define CS_TRUE 1
159 #define CS_FALSE 0
160
161 #define CS_TYPE_ADC 0
162 #define CS_TYPE_DAC 1
163
164 #define SER_BASE (A_SER_BASE_1 + KSEG1)
165 #define SS_CSR(t) (SER_BASE+t)
166 #define SS_TXTBL(t) (SER_BASE+R_SER_TX_TABLE_BASE+(t*8))
167 #define SS_RXTBL(t) (SER_BASE+R_SER_RX_TABLE_BASE+(t*8))
168
169 #define FRAME_BYTES 32
170 #define FRAME_SAMPLE_BYTES 4
171
172 /* Should this be variable? */
173 #define SAMPLE_BUF_SIZE (16*1024)
174 #define SAMPLE_FRAME_COUNT (SAMPLE_BUF_SIZE / FRAME_SAMPLE_BYTES)
175 /* The driver can explode/shrink the frames to/from a smaller sample
176 buffer */
177 #define DMA_BLOAT_FACTOR 1
178 #define DMA_DESCR (SAMPLE_FRAME_COUNT / DMA_BLOAT_FACTOR)
179 #define DMA_BUF_SIZE (DMA_DESCR * FRAME_BYTES)
180
181 /* Use the maxmium count (255 == 5.1 ms between interrupts) */
182 #define DMA_INT_CNT ((1 << S_DMA_INT_PKTCNT) - 1)
183
184 /* Figure this out: how many TX DMAs ahead to schedule a reg access */
185 #define REG_LATENCY 150
186
187 #define FRAME_TX_US 20
188
189 #define SERDMA_NEXTBUF(d,f) (((d)->f+1) % (d)->ringsz)
190
191 static const char invalid_magic[] =
192 KERN_CRIT "cs4297a: invalid magic value\n";
193
194 #define VALIDATE_STATE(s) \
195 ({ \
196 if (!(s) || (s)->magic != CS4297a_MAGIC) { \
197 printk(invalid_magic); \
198 return -ENXIO; \
199 } \
200 })
201
202 struct list_head cs4297a_devs = { &cs4297a_devs, &cs4297a_devs };
203
204 typedef struct serdma_descr_s {
205 u64 descr_a;
206 u64 descr_b;
207 } serdma_descr_t;
208
209 typedef unsigned long paddr_t;
210
211 typedef struct serdma_s {
212 unsigned ringsz;
213 serdma_descr_t *descrtab;
214 serdma_descr_t *descrtab_end;
215 paddr_t descrtab_phys;
216
217 serdma_descr_t *descr_add;
218 serdma_descr_t *descr_rem;
219
220 u64 *dma_buf; // buffer for DMA contents (frames)
221 paddr_t dma_buf_phys;
222 u16 *sample_buf; // tmp buffer for sample conversions
223 u16 *sb_swptr;
224 u16 *sb_hwptr;
225 u16 *sb_end;
226
227 dma_addr_t dmaaddr;
228 // unsigned buforder; // Log base 2 of 'dma_buf' size in bytes..
229 unsigned numfrag; // # of 'fragments' in the buffer.
230 unsigned fragshift; // Log base 2 of fragment size.
231 unsigned hwptr, swptr;
232 unsigned total_bytes; // # bytes process since open.
233 unsigned blocks; // last returned blocks value GETOPTR
234 unsigned wakeup; // interrupt occurred on block
235 int count;
236 unsigned underrun; // underrun flag
237 unsigned error; // over/underrun
238 wait_queue_head_t wait;
239 wait_queue_head_t reg_wait;
240 // redundant, but makes calculations easier
241 unsigned fragsize; // 2**fragshift..
242 unsigned sbufsz; // 2**buforder.
243 unsigned fragsamples;
244 // OSS stuff
245 unsigned mapped:1; // Buffer mapped in cs4297a_mmap()?
246 unsigned ready:1; // prog_dmabuf_dac()/adc() successful?
247 unsigned endcleared:1;
248 unsigned type:1; // adc or dac buffer (CS_TYPE_XXX)
249 unsigned ossfragshift;
250 int ossmaxfrags;
251 unsigned subdivision;
252 } serdma_t;
253
254 struct cs4297a_state {
255 // magic
256 unsigned int magic;
257
258 struct list_head list;
259
260 // soundcore stuff
261 int dev_audio;
262 int dev_mixer;
263
264 // hardware resources
265 unsigned int irq;
266
267 struct {
268 unsigned int rx_ovrrn; /* FIFO */
269 unsigned int rx_overflow; /* staging buffer */
270 unsigned int tx_underrun;
271 unsigned int rx_bad;
272 unsigned int rx_good;
273 } stats;
274
275 // mixer registers
276 struct {
277 unsigned short vol[10];
278 unsigned int recsrc;
279 unsigned int modcnt;
280 unsigned short micpreamp;
281 } mix;
282
283 // wave stuff
284 struct properties {
285 unsigned fmt;
286 unsigned fmt_original; // original requested format
287 unsigned channels;
288 unsigned rate;
289 } prop_dac, prop_adc;
290 unsigned conversion:1; // conversion from 16 to 8 bit in progress
291 unsigned ena;
292 spinlock_t lock;
293 struct mutex open_mutex;
294 struct mutex open_sem_adc;
295 struct mutex open_sem_dac;
296 fmode_t open_mode;
297 wait_queue_head_t open_wait;
298 wait_queue_head_t open_wait_adc;
299 wait_queue_head_t open_wait_dac;
300
301 dma_addr_t dmaaddr_sample_buf;
302 unsigned buforder_sample_buf; // Log base 2 of 'dma_buf' size in bytes..
303
304 serdma_t dma_dac, dma_adc;
305
306 volatile u16 read_value;
307 volatile u16 read_reg;
308 volatile u64 reg_request;
309 };
310
311 #if 1
312 #define prog_codec(a,b)
313 #define dealloc_dmabuf(a,b);
314 #endif
315
prog_dmabuf_adc(struct cs4297a_state * s)316 static int prog_dmabuf_adc(struct cs4297a_state *s)
317 {
318 s->dma_adc.ready = 1;
319 return 0;
320 }
321
322
prog_dmabuf_dac(struct cs4297a_state * s)323 static int prog_dmabuf_dac(struct cs4297a_state *s)
324 {
325 s->dma_dac.ready = 1;
326 return 0;
327 }
328
clear_advance(void * buf,unsigned bsize,unsigned bptr,unsigned len,unsigned char c)329 static void clear_advance(void *buf, unsigned bsize, unsigned bptr,
330 unsigned len, unsigned char c)
331 {
332 if (bptr + len > bsize) {
333 unsigned x = bsize - bptr;
334 memset(((char *) buf) + bptr, c, x);
335 bptr = 0;
336 len -= x;
337 }
338 CS_DBGOUT(CS_WAVE_WRITE, 4, printk(KERN_INFO
339 "cs4297a: clear_advance(): memset %d at 0x%.8x for %d size \n",
340 (unsigned)c, (unsigned)((char *) buf) + bptr, len));
341 memset(((char *) buf) + bptr, c, len);
342 }
343
344 #if CSDEBUG
345
346 // DEBUG ROUTINES
347
348 #define SOUND_MIXER_CS_GETDBGLEVEL _SIOWR('M',120, int)
349 #define SOUND_MIXER_CS_SETDBGLEVEL _SIOWR('M',121, int)
350 #define SOUND_MIXER_CS_GETDBGMASK _SIOWR('M',122, int)
351 #define SOUND_MIXER_CS_SETDBGMASK _SIOWR('M',123, int)
352
cs_printioctl(unsigned int x)353 static void cs_printioctl(unsigned int x)
354 {
355 unsigned int i;
356 unsigned char vidx;
357 // Index of mixtable1[] member is Device ID
358 // and must be <= SOUND_MIXER_NRDEVICES.
359 // Value of array member is index into s->mix.vol[]
360 static const unsigned char mixtable1[SOUND_MIXER_NRDEVICES] = {
361 [SOUND_MIXER_PCM] = 1, // voice
362 [SOUND_MIXER_LINE1] = 2, // AUX
363 [SOUND_MIXER_CD] = 3, // CD
364 [SOUND_MIXER_LINE] = 4, // Line
365 [SOUND_MIXER_SYNTH] = 5, // FM
366 [SOUND_MIXER_MIC] = 6, // Mic
367 [SOUND_MIXER_SPEAKER] = 7, // Speaker
368 [SOUND_MIXER_RECLEV] = 8, // Recording level
369 [SOUND_MIXER_VOLUME] = 9 // Master Volume
370 };
371
372 switch (x) {
373 case SOUND_MIXER_CS_GETDBGMASK:
374 CS_DBGOUT(CS_IOCTL, 4,
375 printk("SOUND_MIXER_CS_GETDBGMASK:\n"));
376 break;
377 case SOUND_MIXER_CS_GETDBGLEVEL:
378 CS_DBGOUT(CS_IOCTL, 4,
379 printk("SOUND_MIXER_CS_GETDBGLEVEL:\n"));
380 break;
381 case SOUND_MIXER_CS_SETDBGMASK:
382 CS_DBGOUT(CS_IOCTL, 4,
383 printk("SOUND_MIXER_CS_SETDBGMASK:\n"));
384 break;
385 case SOUND_MIXER_CS_SETDBGLEVEL:
386 CS_DBGOUT(CS_IOCTL, 4,
387 printk("SOUND_MIXER_CS_SETDBGLEVEL:\n"));
388 break;
389 case OSS_GETVERSION:
390 CS_DBGOUT(CS_IOCTL, 4, printk("OSS_GETVERSION:\n"));
391 break;
392 case SNDCTL_DSP_SYNC:
393 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_SYNC:\n"));
394 break;
395 case SNDCTL_DSP_SETDUPLEX:
396 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_SETDUPLEX:\n"));
397 break;
398 case SNDCTL_DSP_GETCAPS:
399 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_GETCAPS:\n"));
400 break;
401 case SNDCTL_DSP_RESET:
402 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_RESET:\n"));
403 break;
404 case SNDCTL_DSP_SPEED:
405 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_SPEED:\n"));
406 break;
407 case SNDCTL_DSP_STEREO:
408 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_STEREO:\n"));
409 break;
410 case SNDCTL_DSP_CHANNELS:
411 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_CHANNELS:\n"));
412 break;
413 case SNDCTL_DSP_GETFMTS:
414 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_GETFMTS:\n"));
415 break;
416 case SNDCTL_DSP_SETFMT:
417 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_SETFMT:\n"));
418 break;
419 case SNDCTL_DSP_POST:
420 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_POST:\n"));
421 break;
422 case SNDCTL_DSP_GETTRIGGER:
423 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_GETTRIGGER:\n"));
424 break;
425 case SNDCTL_DSP_SETTRIGGER:
426 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_SETTRIGGER:\n"));
427 break;
428 case SNDCTL_DSP_GETOSPACE:
429 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_GETOSPACE:\n"));
430 break;
431 case SNDCTL_DSP_GETISPACE:
432 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_GETISPACE:\n"));
433 break;
434 case SNDCTL_DSP_NONBLOCK:
435 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_NONBLOCK:\n"));
436 break;
437 case SNDCTL_DSP_GETODELAY:
438 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_GETODELAY:\n"));
439 break;
440 case SNDCTL_DSP_GETIPTR:
441 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_GETIPTR:\n"));
442 break;
443 case SNDCTL_DSP_GETOPTR:
444 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_GETOPTR:\n"));
445 break;
446 case SNDCTL_DSP_GETBLKSIZE:
447 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_GETBLKSIZE:\n"));
448 break;
449 case SNDCTL_DSP_SETFRAGMENT:
450 CS_DBGOUT(CS_IOCTL, 4,
451 printk("SNDCTL_DSP_SETFRAGMENT:\n"));
452 break;
453 case SNDCTL_DSP_SUBDIVIDE:
454 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_SUBDIVIDE:\n"));
455 break;
456 case SOUND_PCM_READ_RATE:
457 CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_PCM_READ_RATE:\n"));
458 break;
459 case SOUND_PCM_READ_CHANNELS:
460 CS_DBGOUT(CS_IOCTL, 4,
461 printk("SOUND_PCM_READ_CHANNELS:\n"));
462 break;
463 case SOUND_PCM_READ_BITS:
464 CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_PCM_READ_BITS:\n"));
465 break;
466 case SOUND_PCM_WRITE_FILTER:
467 CS_DBGOUT(CS_IOCTL, 4,
468 printk("SOUND_PCM_WRITE_FILTER:\n"));
469 break;
470 case SNDCTL_DSP_SETSYNCRO:
471 CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_SETSYNCRO:\n"));
472 break;
473 case SOUND_PCM_READ_FILTER:
474 CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_PCM_READ_FILTER:\n"));
475 break;
476 case SOUND_MIXER_PRIVATE1:
477 CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_PRIVATE1:\n"));
478 break;
479 case SOUND_MIXER_PRIVATE2:
480 CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_PRIVATE2:\n"));
481 break;
482 case SOUND_MIXER_PRIVATE3:
483 CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_PRIVATE3:\n"));
484 break;
485 case SOUND_MIXER_PRIVATE4:
486 CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_PRIVATE4:\n"));
487 break;
488 case SOUND_MIXER_PRIVATE5:
489 CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_PRIVATE5:\n"));
490 break;
491 case SOUND_MIXER_INFO:
492 CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_INFO:\n"));
493 break;
494 case SOUND_OLD_MIXER_INFO:
495 CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_OLD_MIXER_INFO:\n"));
496 break;
497
498 default:
499 switch (_IOC_NR(x)) {
500 case SOUND_MIXER_VOLUME:
501 CS_DBGOUT(CS_IOCTL, 4,
502 printk("SOUND_MIXER_VOLUME:\n"));
503 break;
504 case SOUND_MIXER_SPEAKER:
505 CS_DBGOUT(CS_IOCTL, 4,
506 printk("SOUND_MIXER_SPEAKER:\n"));
507 break;
508 case SOUND_MIXER_RECLEV:
509 CS_DBGOUT(CS_IOCTL, 4,
510 printk("SOUND_MIXER_RECLEV:\n"));
511 break;
512 case SOUND_MIXER_MIC:
513 CS_DBGOUT(CS_IOCTL, 4,
514 printk("SOUND_MIXER_MIC:\n"));
515 break;
516 case SOUND_MIXER_SYNTH:
517 CS_DBGOUT(CS_IOCTL, 4,
518 printk("SOUND_MIXER_SYNTH:\n"));
519 break;
520 case SOUND_MIXER_RECSRC:
521 CS_DBGOUT(CS_IOCTL, 4,
522 printk("SOUND_MIXER_RECSRC:\n"));
523 break;
524 case SOUND_MIXER_DEVMASK:
525 CS_DBGOUT(CS_IOCTL, 4,
526 printk("SOUND_MIXER_DEVMASK:\n"));
527 break;
528 case SOUND_MIXER_RECMASK:
529 CS_DBGOUT(CS_IOCTL, 4,
530 printk("SOUND_MIXER_RECMASK:\n"));
531 break;
532 case SOUND_MIXER_STEREODEVS:
533 CS_DBGOUT(CS_IOCTL, 4,
534 printk("SOUND_MIXER_STEREODEVS:\n"));
535 break;
536 case SOUND_MIXER_CAPS:
537 CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_CAPS:\n"));
538 break;
539 default:
540 i = _IOC_NR(x);
541 if (i >= SOUND_MIXER_NRDEVICES
542 || !(vidx = mixtable1[i])) {
543 CS_DBGOUT(CS_IOCTL, 4, printk
544 ("UNKNOWN IOCTL: 0x%.8x NR=%d\n",
545 x, i));
546 } else {
547 CS_DBGOUT(CS_IOCTL, 4, printk
548 ("SOUND_MIXER_IOCTL AC9x: 0x%.8x NR=%d\n",
549 x, i));
550 }
551 break;
552 }
553 }
554 }
555 #endif
556
557
ser_init(struct cs4297a_state * s)558 static int ser_init(struct cs4297a_state *s)
559 {
560 int i;
561
562 CS_DBGOUT(CS_INIT, 2,
563 printk(KERN_INFO "cs4297a: Setting up serial parameters\n"));
564
565 __raw_writeq(M_SYNCSER_CMD_RX_RESET | M_SYNCSER_CMD_TX_RESET, SS_CSR(R_SER_CMD));
566
567 __raw_writeq(M_SYNCSER_MSB_FIRST, SS_CSR(R_SER_MODE));
568 __raw_writeq(32, SS_CSR(R_SER_MINFRM_SZ));
569 __raw_writeq(32, SS_CSR(R_SER_MAXFRM_SZ));
570
571 __raw_writeq(1, SS_CSR(R_SER_TX_RD_THRSH));
572 __raw_writeq(4, SS_CSR(R_SER_TX_WR_THRSH));
573 __raw_writeq(8, SS_CSR(R_SER_RX_RD_THRSH));
574
575 /* This looks good from experimentation */
576 __raw_writeq((M_SYNCSER_TXSYNC_INT | V_SYNCSER_TXSYNC_DLY(0) | M_SYNCSER_TXCLK_EXT |
577 M_SYNCSER_RXSYNC_INT | V_SYNCSER_RXSYNC_DLY(1) | M_SYNCSER_RXCLK_EXT | M_SYNCSER_RXSYNC_EDGE),
578 SS_CSR(R_SER_LINE_MODE));
579
580 /* This looks good from experimentation */
581 __raw_writeq(V_SYNCSER_SEQ_COUNT(14) | M_SYNCSER_SEQ_ENABLE | M_SYNCSER_SEQ_STROBE,
582 SS_TXTBL(0));
583 __raw_writeq(V_SYNCSER_SEQ_COUNT(15) | M_SYNCSER_SEQ_ENABLE | M_SYNCSER_SEQ_BYTE,
584 SS_TXTBL(1));
585 __raw_writeq(V_SYNCSER_SEQ_COUNT(13) | M_SYNCSER_SEQ_ENABLE | M_SYNCSER_SEQ_BYTE,
586 SS_TXTBL(2));
587 __raw_writeq(V_SYNCSER_SEQ_COUNT( 0) | M_SYNCSER_SEQ_ENABLE |
588 M_SYNCSER_SEQ_STROBE | M_SYNCSER_SEQ_LAST, SS_TXTBL(3));
589
590 __raw_writeq(V_SYNCSER_SEQ_COUNT(14) | M_SYNCSER_SEQ_ENABLE | M_SYNCSER_SEQ_STROBE,
591 SS_RXTBL(0));
592 __raw_writeq(V_SYNCSER_SEQ_COUNT(15) | M_SYNCSER_SEQ_ENABLE | M_SYNCSER_SEQ_BYTE,
593 SS_RXTBL(1));
594 __raw_writeq(V_SYNCSER_SEQ_COUNT(13) | M_SYNCSER_SEQ_ENABLE | M_SYNCSER_SEQ_BYTE,
595 SS_RXTBL(2));
596 __raw_writeq(V_SYNCSER_SEQ_COUNT( 0) | M_SYNCSER_SEQ_ENABLE | M_SYNCSER_SEQ_STROBE |
597 M_SYNCSER_SEQ_LAST, SS_RXTBL(3));
598
599 for (i=4; i<16; i++) {
600 /* Just in case... */
601 __raw_writeq(M_SYNCSER_SEQ_LAST, SS_TXTBL(i));
602 __raw_writeq(M_SYNCSER_SEQ_LAST, SS_RXTBL(i));
603 }
604
605 return 0;
606 }
607
init_serdma(serdma_t * dma)608 static int init_serdma(serdma_t *dma)
609 {
610 CS_DBGOUT(CS_INIT, 2,
611 printk(KERN_ERR "cs4297a: desc - %d sbufsize - %d dbufsize - %d\n",
612 DMA_DESCR, SAMPLE_BUF_SIZE, DMA_BUF_SIZE));
613
614 /* Descriptors */
615 dma->ringsz = DMA_DESCR;
616 dma->descrtab = kzalloc(dma->ringsz * sizeof(serdma_descr_t), GFP_KERNEL);
617 if (!dma->descrtab) {
618 printk(KERN_ERR "cs4297a: kzalloc descrtab failed\n");
619 return -1;
620 }
621 dma->descrtab_end = dma->descrtab + dma->ringsz;
622 /* XXX bloddy mess, use proper DMA API here ... */
623 dma->descrtab_phys = CPHYSADDR((long)dma->descrtab);
624 dma->descr_add = dma->descr_rem = dma->descrtab;
625
626 /* Frame buffer area */
627 dma->dma_buf = kzalloc(DMA_BUF_SIZE, GFP_KERNEL);
628 if (!dma->dma_buf) {
629 printk(KERN_ERR "cs4297a: kzalloc dma_buf failed\n");
630 kfree(dma->descrtab);
631 return -1;
632 }
633 dma->dma_buf_phys = CPHYSADDR((long)dma->dma_buf);
634
635 /* Samples buffer area */
636 dma->sbufsz = SAMPLE_BUF_SIZE;
637 dma->sample_buf = kmalloc(dma->sbufsz, GFP_KERNEL);
638 if (!dma->sample_buf) {
639 printk(KERN_ERR "cs4297a: kmalloc sample_buf failed\n");
640 kfree(dma->descrtab);
641 kfree(dma->dma_buf);
642 return -1;
643 }
644 dma->sb_swptr = dma->sb_hwptr = dma->sample_buf;
645 dma->sb_end = (u16 *)((void *)dma->sample_buf + dma->sbufsz);
646 dma->fragsize = dma->sbufsz >> 1;
647
648 CS_DBGOUT(CS_INIT, 4,
649 printk(KERN_ERR "cs4297a: descrtab - %08x dma_buf - %x sample_buf - %x\n",
650 (int)dma->descrtab, (int)dma->dma_buf,
651 (int)dma->sample_buf));
652
653 return 0;
654 }
655
dma_init(struct cs4297a_state * s)656 static int dma_init(struct cs4297a_state *s)
657 {
658 int i;
659
660 CS_DBGOUT(CS_INIT, 2,
661 printk(KERN_INFO "cs4297a: Setting up DMA\n"));
662
663 if (init_serdma(&s->dma_adc) ||
664 init_serdma(&s->dma_dac))
665 return -1;
666
667 if (__raw_readq(SS_CSR(R_SER_DMA_DSCR_COUNT_RX))||
668 __raw_readq(SS_CSR(R_SER_DMA_DSCR_COUNT_TX))) {
669 panic("DMA state corrupted?!");
670 }
671
672 /* Initialize now - the descr/buffer pairings will never
673 change... */
674 for (i=0; i<DMA_DESCR; i++) {
675 s->dma_dac.descrtab[i].descr_a = M_DMA_SERRX_SOP | V_DMA_DSCRA_A_SIZE(1) |
676 (s->dma_dac.dma_buf_phys + i*FRAME_BYTES);
677 s->dma_dac.descrtab[i].descr_b = V_DMA_DSCRB_PKT_SIZE(FRAME_BYTES);
678 s->dma_adc.descrtab[i].descr_a = V_DMA_DSCRA_A_SIZE(1) |
679 (s->dma_adc.dma_buf_phys + i*FRAME_BYTES);
680 s->dma_adc.descrtab[i].descr_b = 0;
681 }
682
683 __raw_writeq((M_DMA_EOP_INT_EN | V_DMA_INT_PKTCNT(DMA_INT_CNT) |
684 V_DMA_RINGSZ(DMA_DESCR) | M_DMA_TDX_EN),
685 SS_CSR(R_SER_DMA_CONFIG0_RX));
686 __raw_writeq(M_DMA_L2CA, SS_CSR(R_SER_DMA_CONFIG1_RX));
687 __raw_writeq(s->dma_adc.descrtab_phys, SS_CSR(R_SER_DMA_DSCR_BASE_RX));
688
689 __raw_writeq(V_DMA_RINGSZ(DMA_DESCR), SS_CSR(R_SER_DMA_CONFIG0_TX));
690 __raw_writeq(M_DMA_L2CA | M_DMA_NO_DSCR_UPDT, SS_CSR(R_SER_DMA_CONFIG1_TX));
691 __raw_writeq(s->dma_dac.descrtab_phys, SS_CSR(R_SER_DMA_DSCR_BASE_TX));
692
693 /* Prep the receive DMA descriptor ring */
694 __raw_writeq(DMA_DESCR, SS_CSR(R_SER_DMA_DSCR_COUNT_RX));
695
696 __raw_writeq(M_SYNCSER_DMA_RX_EN | M_SYNCSER_DMA_TX_EN, SS_CSR(R_SER_DMA_ENABLE));
697
698 __raw_writeq((M_SYNCSER_RX_SYNC_ERR | M_SYNCSER_RX_OVERRUN | M_SYNCSER_RX_EOP_COUNT),
699 SS_CSR(R_SER_INT_MASK));
700
701 /* Enable the rx/tx; let the codec warm up to the sync and
702 start sending good frames before the receive FIFO is
703 enabled */
704 __raw_writeq(M_SYNCSER_CMD_TX_EN, SS_CSR(R_SER_CMD));
705 udelay(1000);
706 __raw_writeq(M_SYNCSER_CMD_RX_EN | M_SYNCSER_CMD_TX_EN, SS_CSR(R_SER_CMD));
707
708 /* XXXKW is this magic? (the "1" part) */
709 while ((__raw_readq(SS_CSR(R_SER_STATUS)) & 0xf1) != 1)
710 ;
711
712 CS_DBGOUT(CS_INIT, 4,
713 printk(KERN_INFO "cs4297a: status: %08x\n",
714 (unsigned int)(__raw_readq(SS_CSR(R_SER_STATUS)) & 0xffffffff)));
715
716 return 0;
717 }
718
serdma_reg_access(struct cs4297a_state * s,u64 data)719 static int serdma_reg_access(struct cs4297a_state *s, u64 data)
720 {
721 serdma_t *d = &s->dma_dac;
722 u64 *data_p;
723 unsigned swptr;
724 unsigned long flags;
725 serdma_descr_t *descr;
726
727 if (s->reg_request) {
728 printk(KERN_ERR "cs4297a: attempt to issue multiple reg_access\n");
729 return -1;
730 }
731
732 if (s->ena & FMODE_WRITE) {
733 /* Since a writer has the DSP open, we have to mux the
734 request in */
735 s->reg_request = data;
736 interruptible_sleep_on(&s->dma_dac.reg_wait);
737 /* XXXKW how can I deal with the starvation case where
738 the opener isn't writing? */
739 } else {
740 /* Be safe when changing ring pointers */
741 spin_lock_irqsave(&s->lock, flags);
742 if (d->hwptr != d->swptr) {
743 printk(KERN_ERR "cs4297a: reg access found bookkeeping error (hw/sw = %d/%d\n",
744 d->hwptr, d->swptr);
745 spin_unlock_irqrestore(&s->lock, flags);
746 return -1;
747 }
748 swptr = d->swptr;
749 d->hwptr = d->swptr = (d->swptr + 1) % d->ringsz;
750 spin_unlock_irqrestore(&s->lock, flags);
751
752 descr = &d->descrtab[swptr];
753 data_p = &d->dma_buf[swptr * 4];
754 *data_p = cpu_to_be64(data);
755 __raw_writeq(1, SS_CSR(R_SER_DMA_DSCR_COUNT_TX));
756 CS_DBGOUT(CS_DESCR, 4,
757 printk(KERN_INFO "cs4297a: add_tx %p (%x -> %x)\n",
758 data_p, swptr, d->hwptr));
759 }
760
761 CS_DBGOUT(CS_FUNCTION, 6,
762 printk(KERN_INFO "cs4297a: serdma_reg_access()-\n"));
763
764 return 0;
765 }
766
767 //****************************************************************************
768 // "cs4297a_read_ac97" -- Reads an AC97 register
769 //****************************************************************************
cs4297a_read_ac97(struct cs4297a_state * s,u32 offset,u32 * value)770 static int cs4297a_read_ac97(struct cs4297a_state *s, u32 offset,
771 u32 * value)
772 {
773 CS_DBGOUT(CS_AC97, 1,
774 printk(KERN_INFO "cs4297a: read reg %2x\n", offset));
775 if (serdma_reg_access(s, (0xCLL << 60) | (1LL << 47) | ((u64)(offset & 0x7F) << 40)))
776 return -1;
777
778 interruptible_sleep_on(&s->dma_adc.reg_wait);
779 *value = s->read_value;
780 CS_DBGOUT(CS_AC97, 2,
781 printk(KERN_INFO "cs4297a: rdr reg %x -> %x\n", s->read_reg, s->read_value));
782
783 return 0;
784 }
785
786
787 //****************************************************************************
788 // "cs4297a_write_ac97()"-- writes an AC97 register
789 //****************************************************************************
cs4297a_write_ac97(struct cs4297a_state * s,u32 offset,u32 value)790 static int cs4297a_write_ac97(struct cs4297a_state *s, u32 offset,
791 u32 value)
792 {
793 CS_DBGOUT(CS_AC97, 1,
794 printk(KERN_INFO "cs4297a: write reg %2x -> %04x\n", offset, value));
795 return (serdma_reg_access(s, (0xELL << 60) | ((u64)(offset & 0x7F) << 40) | ((value & 0xffff) << 12)));
796 }
797
stop_dac(struct cs4297a_state * s)798 static void stop_dac(struct cs4297a_state *s)
799 {
800 unsigned long flags;
801
802 CS_DBGOUT(CS_WAVE_WRITE, 3, printk(KERN_INFO "cs4297a: stop_dac():\n"));
803 spin_lock_irqsave(&s->lock, flags);
804 s->ena &= ~FMODE_WRITE;
805 #if 0
806 /* XXXKW what do I really want here? My theory for now is
807 that I just flip the "ena" bit, and the interrupt handler
808 will stop processing the xmit channel */
809 __raw_writeq((s->ena & FMODE_READ) ? M_SYNCSER_DMA_RX_EN : 0,
810 SS_CSR(R_SER_DMA_ENABLE));
811 #endif
812
813 spin_unlock_irqrestore(&s->lock, flags);
814 }
815
816
start_dac(struct cs4297a_state * s)817 static void start_dac(struct cs4297a_state *s)
818 {
819 unsigned long flags;
820
821 CS_DBGOUT(CS_FUNCTION, 3, printk(KERN_INFO "cs4297a: start_dac()+\n"));
822 spin_lock_irqsave(&s->lock, flags);
823 if (!(s->ena & FMODE_WRITE) && (s->dma_dac.mapped ||
824 (s->dma_dac.count > 0
825 && s->dma_dac.ready))) {
826 s->ena |= FMODE_WRITE;
827 /* XXXKW what do I really want here? My theory for
828 now is that I just flip the "ena" bit, and the
829 interrupt handler will start processing the xmit
830 channel */
831
832 CS_DBGOUT(CS_WAVE_WRITE | CS_PARMS, 8, printk(KERN_INFO
833 "cs4297a: start_dac(): start dma\n"));
834
835 }
836 spin_unlock_irqrestore(&s->lock, flags);
837 CS_DBGOUT(CS_FUNCTION, 3,
838 printk(KERN_INFO "cs4297a: start_dac()-\n"));
839 }
840
841
stop_adc(struct cs4297a_state * s)842 static void stop_adc(struct cs4297a_state *s)
843 {
844 unsigned long flags;
845
846 CS_DBGOUT(CS_FUNCTION, 3,
847 printk(KERN_INFO "cs4297a: stop_adc()+\n"));
848
849 spin_lock_irqsave(&s->lock, flags);
850 s->ena &= ~FMODE_READ;
851
852 if (s->conversion == 1) {
853 s->conversion = 0;
854 s->prop_adc.fmt = s->prop_adc.fmt_original;
855 }
856 /* Nothing to do really, I need to keep the DMA going
857 XXXKW when do I get here, and is there more I should do? */
858 spin_unlock_irqrestore(&s->lock, flags);
859 CS_DBGOUT(CS_FUNCTION, 3,
860 printk(KERN_INFO "cs4297a: stop_adc()-\n"));
861 }
862
863
start_adc(struct cs4297a_state * s)864 static void start_adc(struct cs4297a_state *s)
865 {
866 unsigned long flags;
867
868 CS_DBGOUT(CS_FUNCTION, 2,
869 printk(KERN_INFO "cs4297a: start_adc()+\n"));
870
871 if (!(s->ena & FMODE_READ) &&
872 (s->dma_adc.mapped || s->dma_adc.count <=
873 (signed) (s->dma_adc.sbufsz - 2 * s->dma_adc.fragsize))
874 && s->dma_adc.ready) {
875 if (s->prop_adc.fmt & AFMT_S8 || s->prop_adc.fmt & AFMT_U8) {
876 //
877 // now only use 16 bit capture, due to truncation issue
878 // in the chip, noticeable distortion occurs.
879 // allocate buffer and then convert from 16 bit to
880 // 8 bit for the user buffer.
881 //
882 s->prop_adc.fmt_original = s->prop_adc.fmt;
883 if (s->prop_adc.fmt & AFMT_S8) {
884 s->prop_adc.fmt &= ~AFMT_S8;
885 s->prop_adc.fmt |= AFMT_S16_LE;
886 }
887 if (s->prop_adc.fmt & AFMT_U8) {
888 s->prop_adc.fmt &= ~AFMT_U8;
889 s->prop_adc.fmt |= AFMT_U16_LE;
890 }
891 //
892 // prog_dmabuf_adc performs a stop_adc() but that is
893 // ok since we really haven't started the DMA yet.
894 //
895 prog_codec(s, CS_TYPE_ADC);
896
897 prog_dmabuf_adc(s);
898 s->conversion = 1;
899 }
900 spin_lock_irqsave(&s->lock, flags);
901 s->ena |= FMODE_READ;
902 /* Nothing to do really, I am probably already
903 DMAing... XXXKW when do I get here, and is there
904 more I should do? */
905 spin_unlock_irqrestore(&s->lock, flags);
906
907 CS_DBGOUT(CS_PARMS, 6, printk(KERN_INFO
908 "cs4297a: start_adc(): start adc\n"));
909 }
910 CS_DBGOUT(CS_FUNCTION, 2,
911 printk(KERN_INFO "cs4297a: start_adc()-\n"));
912
913 }
914
915
916 // call with spinlock held!
cs4297a_update_ptr(struct cs4297a_state * s,int intflag)917 static void cs4297a_update_ptr(struct cs4297a_state *s, int intflag)
918 {
919 int good_diff, diff, diff2;
920 u64 *data_p, data;
921 u32 *s_ptr;
922 unsigned hwptr;
923 u32 status;
924 serdma_t *d;
925 serdma_descr_t *descr;
926
927 // update ADC pointer
928 status = intflag ? __raw_readq(SS_CSR(R_SER_STATUS)) : 0;
929
930 if ((s->ena & FMODE_READ) || (status & (M_SYNCSER_RX_EOP_COUNT))) {
931 d = &s->dma_adc;
932 hwptr = (unsigned) (((__raw_readq(SS_CSR(R_SER_DMA_CUR_DSCR_ADDR_RX)) & M_DMA_CURDSCR_ADDR) -
933 d->descrtab_phys) / sizeof(serdma_descr_t));
934
935 if (s->ena & FMODE_READ) {
936 CS_DBGOUT(CS_FUNCTION, 2,
937 printk(KERN_INFO "cs4297a: upd_rcv sw->hw->hw %x/%x/%x (int-%d)n",
938 d->swptr, d->hwptr, hwptr, intflag));
939 /* Number of DMA buffers available for software: */
940 diff2 = diff = (d->ringsz + hwptr - d->hwptr) % d->ringsz;
941 d->hwptr = hwptr;
942 good_diff = 0;
943 s_ptr = (u32 *)&(d->dma_buf[d->swptr*4]);
944 descr = &d->descrtab[d->swptr];
945 while (diff2--) {
946 u64 data = be64_to_cpu(*(u64 *)s_ptr);
947 u64 descr_a;
948 u16 left, right;
949 descr_a = descr->descr_a;
950 descr->descr_a &= ~M_DMA_SERRX_SOP;
951 if ((descr_a & M_DMA_DSCRA_A_ADDR) != CPHYSADDR((long)s_ptr)) {
952 printk(KERN_ERR "cs4297a: RX Bad address (read)\n");
953 }
954 if (((data & 0x9800000000000000) != 0x9800000000000000) ||
955 (!(descr_a & M_DMA_SERRX_SOP)) ||
956 (G_DMA_DSCRB_PKT_SIZE(descr->descr_b) != FRAME_BYTES)) {
957 s->stats.rx_bad++;
958 printk(KERN_DEBUG "cs4297a: RX Bad attributes (read)\n");
959 continue;
960 }
961 s->stats.rx_good++;
962 if ((data >> 61) == 7) {
963 s->read_value = (data >> 12) & 0xffff;
964 s->read_reg = (data >> 40) & 0x7f;
965 wake_up(&d->reg_wait);
966 }
967 if (d->count && (d->sb_hwptr == d->sb_swptr)) {
968 s->stats.rx_overflow++;
969 printk(KERN_DEBUG "cs4297a: RX overflow\n");
970 continue;
971 }
972 good_diff++;
973 left = ((be32_to_cpu(s_ptr[1]) & 0xff) << 8) |
974 ((be32_to_cpu(s_ptr[2]) >> 24) & 0xff);
975 right = (be32_to_cpu(s_ptr[2]) >> 4) & 0xffff;
976 *d->sb_hwptr++ = cpu_to_be16(left);
977 *d->sb_hwptr++ = cpu_to_be16(right);
978 if (d->sb_hwptr == d->sb_end)
979 d->sb_hwptr = d->sample_buf;
980 descr++;
981 if (descr == d->descrtab_end) {
982 descr = d->descrtab;
983 s_ptr = (u32 *)s->dma_adc.dma_buf;
984 } else {
985 s_ptr += 8;
986 }
987 }
988 d->total_bytes += good_diff * FRAME_SAMPLE_BYTES;
989 d->count += good_diff * FRAME_SAMPLE_BYTES;
990 if (d->count > d->sbufsz) {
991 printk(KERN_ERR "cs4297a: bogus receive overflow!!\n");
992 }
993 d->swptr = (d->swptr + diff) % d->ringsz;
994 __raw_writeq(diff, SS_CSR(R_SER_DMA_DSCR_COUNT_RX));
995 if (d->mapped) {
996 if (d->count >= (signed) d->fragsize)
997 wake_up(&d->wait);
998 } else {
999 if (d->count > 0) {
1000 CS_DBGOUT(CS_WAVE_READ, 4,
1001 printk(KERN_INFO
1002 "cs4297a: update count -> %d\n", d->count));
1003 wake_up(&d->wait);
1004 }
1005 }
1006 } else {
1007 /* Receive is going even if no one is
1008 listening (for register accesses and to
1009 avoid FIFO overrun) */
1010 diff2 = diff = (hwptr + d->ringsz - d->hwptr) % d->ringsz;
1011 if (!diff) {
1012 printk(KERN_ERR "cs4297a: RX full or empty?\n");
1013 }
1014
1015 descr = &d->descrtab[d->swptr];
1016 data_p = &d->dma_buf[d->swptr*4];
1017
1018 /* Force this to happen at least once; I got
1019 here because of an interrupt, so there must
1020 be a buffer to process. */
1021 do {
1022 data = be64_to_cpu(*data_p);
1023 if ((descr->descr_a & M_DMA_DSCRA_A_ADDR) != CPHYSADDR((long)data_p)) {
1024 printk(KERN_ERR "cs4297a: RX Bad address %d (%llx %lx)\n", d->swptr,
1025 (long long)(descr->descr_a & M_DMA_DSCRA_A_ADDR),
1026 (long)CPHYSADDR((long)data_p));
1027 }
1028 if (!(data & (1LL << 63)) ||
1029 !(descr->descr_a & M_DMA_SERRX_SOP) ||
1030 (G_DMA_DSCRB_PKT_SIZE(descr->descr_b) != FRAME_BYTES)) {
1031 s->stats.rx_bad++;
1032 printk(KERN_DEBUG "cs4297a: RX Bad attributes\n");
1033 } else {
1034 s->stats.rx_good++;
1035 if ((data >> 61) == 7) {
1036 s->read_value = (data >> 12) & 0xffff;
1037 s->read_reg = (data >> 40) & 0x7f;
1038 wake_up(&d->reg_wait);
1039 }
1040 }
1041 descr->descr_a &= ~M_DMA_SERRX_SOP;
1042 descr++;
1043 d->swptr++;
1044 data_p += 4;
1045 if (descr == d->descrtab_end) {
1046 descr = d->descrtab;
1047 d->swptr = 0;
1048 data_p = d->dma_buf;
1049 }
1050 __raw_writeq(1, SS_CSR(R_SER_DMA_DSCR_COUNT_RX));
1051 } while (--diff);
1052 d->hwptr = hwptr;
1053
1054 CS_DBGOUT(CS_DESCR, 6,
1055 printk(KERN_INFO "cs4297a: hw/sw %x/%x\n", d->hwptr, d->swptr));
1056 }
1057
1058 CS_DBGOUT(CS_PARMS, 8, printk(KERN_INFO
1059 "cs4297a: cs4297a_update_ptr(): s=0x%.8x hwptr=%d total_bytes=%d count=%d \n",
1060 (unsigned)s, d->hwptr,
1061 d->total_bytes, d->count));
1062 }
1063
1064 /* XXXKW worry about s->reg_request -- there is a starvation
1065 case if s->ena has FMODE_WRITE on, but the client isn't
1066 doing writes */
1067
1068 // update DAC pointer
1069 //
1070 // check for end of buffer, means that we are going to wait for another interrupt
1071 // to allow silence to fill the fifos on the part, to keep pops down to a minimum.
1072 //
1073 if (s->ena & FMODE_WRITE) {
1074 serdma_t *d = &s->dma_dac;
1075 hwptr = (unsigned) (((__raw_readq(SS_CSR(R_SER_DMA_CUR_DSCR_ADDR_TX)) & M_DMA_CURDSCR_ADDR) -
1076 d->descrtab_phys) / sizeof(serdma_descr_t));
1077 diff = (d->ringsz + hwptr - d->hwptr) % d->ringsz;
1078 CS_DBGOUT(CS_WAVE_WRITE, 4, printk(KERN_INFO
1079 "cs4297a: cs4297a_update_ptr(): hw/hw/sw %x/%x/%x diff %d count %d\n",
1080 d->hwptr, hwptr, d->swptr, diff, d->count));
1081 d->hwptr = hwptr;
1082 /* XXXKW stereo? conversion? Just assume 2 16-bit samples for now */
1083 d->total_bytes += diff * FRAME_SAMPLE_BYTES;
1084 if (d->mapped) {
1085 d->count += diff * FRAME_SAMPLE_BYTES;
1086 if (d->count >= d->fragsize) {
1087 d->wakeup = 1;
1088 wake_up(&d->wait);
1089 if (d->count > d->sbufsz)
1090 d->count &= d->sbufsz - 1;
1091 }
1092 } else {
1093 d->count -= diff * FRAME_SAMPLE_BYTES;
1094 if (d->count <= 0) {
1095 //
1096 // fill with silence, and do not shut down the DAC.
1097 // Continue to play silence until the _release.
1098 //
1099 CS_DBGOUT(CS_WAVE_WRITE, 6, printk(KERN_INFO
1100 "cs4297a: cs4297a_update_ptr(): memset %d at 0x%.8x for %d size \n",
1101 (unsigned)(s->prop_dac.fmt &
1102 (AFMT_U8 | AFMT_U16_LE)) ? 0x80 : 0,
1103 (unsigned)d->dma_buf,
1104 d->ringsz));
1105 memset(d->dma_buf, 0, d->ringsz * FRAME_BYTES);
1106 if (d->count < 0) {
1107 d->underrun = 1;
1108 s->stats.tx_underrun++;
1109 d->count = 0;
1110 CS_DBGOUT(CS_ERROR, 9, printk(KERN_INFO
1111 "cs4297a: cs4297a_update_ptr(): underrun\n"));
1112 }
1113 } else if (d->count <=
1114 (signed) d->fragsize
1115 && !d->endcleared) {
1116 /* XXXKW what is this for? */
1117 clear_advance(d->dma_buf,
1118 d->sbufsz,
1119 d->swptr,
1120 d->fragsize,
1121 0);
1122 d->endcleared = 1;
1123 }
1124 if ( (d->count <= (signed) d->sbufsz/2) || intflag)
1125 {
1126 CS_DBGOUT(CS_WAVE_WRITE, 4,
1127 printk(KERN_INFO
1128 "cs4297a: update count -> %d\n", d->count));
1129 wake_up(&d->wait);
1130 }
1131 }
1132 CS_DBGOUT(CS_PARMS, 8, printk(KERN_INFO
1133 "cs4297a: cs4297a_update_ptr(): s=0x%.8x hwptr=%d total_bytes=%d count=%d \n",
1134 (unsigned) s, d->hwptr,
1135 d->total_bytes, d->count));
1136 }
1137 }
1138
mixer_ioctl(struct cs4297a_state * s,unsigned int cmd,unsigned long arg)1139 static int mixer_ioctl(struct cs4297a_state *s, unsigned int cmd,
1140 unsigned long arg)
1141 {
1142 // Index to mixer_src[] is value of AC97 Input Mux Select Reg.
1143 // Value of array member is recording source Device ID Mask.
1144 static const unsigned int mixer_src[8] = {
1145 SOUND_MASK_MIC, SOUND_MASK_CD, 0, SOUND_MASK_LINE1,
1146 SOUND_MASK_LINE, SOUND_MASK_VOLUME, 0, 0
1147 };
1148
1149 // Index of mixtable1[] member is Device ID
1150 // and must be <= SOUND_MIXER_NRDEVICES.
1151 // Value of array member is index into s->mix.vol[]
1152 static const unsigned char mixtable1[SOUND_MIXER_NRDEVICES] = {
1153 [SOUND_MIXER_PCM] = 1, // voice
1154 [SOUND_MIXER_LINE1] = 2, // AUX
1155 [SOUND_MIXER_CD] = 3, // CD
1156 [SOUND_MIXER_LINE] = 4, // Line
1157 [SOUND_MIXER_SYNTH] = 5, // FM
1158 [SOUND_MIXER_MIC] = 6, // Mic
1159 [SOUND_MIXER_SPEAKER] = 7, // Speaker
1160 [SOUND_MIXER_RECLEV] = 8, // Recording level
1161 [SOUND_MIXER_VOLUME] = 9 // Master Volume
1162 };
1163
1164 static const unsigned mixreg[] = {
1165 AC97_PCMOUT_VOL,
1166 AC97_AUX_VOL,
1167 AC97_CD_VOL,
1168 AC97_LINEIN_VOL
1169 };
1170 unsigned char l, r, rl, rr, vidx;
1171 unsigned char attentbl[11] =
1172 { 63, 42, 26, 17, 14, 11, 8, 6, 4, 2, 0 };
1173 unsigned temp1;
1174 int i, val;
1175
1176 VALIDATE_STATE(s);
1177 CS_DBGOUT(CS_FUNCTION, 4, printk(KERN_INFO
1178 "cs4297a: mixer_ioctl(): s=0x%.8x cmd=0x%.8x\n",
1179 (unsigned) s, cmd));
1180 #if CSDEBUG
1181 cs_printioctl(cmd);
1182 #endif
1183 #if CSDEBUG_INTERFACE
1184
1185 if ((cmd == SOUND_MIXER_CS_GETDBGMASK) ||
1186 (cmd == SOUND_MIXER_CS_SETDBGMASK) ||
1187 (cmd == SOUND_MIXER_CS_GETDBGLEVEL) ||
1188 (cmd == SOUND_MIXER_CS_SETDBGLEVEL))
1189 {
1190 switch (cmd) {
1191
1192 case SOUND_MIXER_CS_GETDBGMASK:
1193 return put_user(cs_debugmask,
1194 (unsigned long *) arg);
1195
1196 case SOUND_MIXER_CS_GETDBGLEVEL:
1197 return put_user(cs_debuglevel,
1198 (unsigned long *) arg);
1199
1200 case SOUND_MIXER_CS_SETDBGMASK:
1201 if (get_user(val, (unsigned long *) arg))
1202 return -EFAULT;
1203 cs_debugmask = val;
1204 return 0;
1205
1206 case SOUND_MIXER_CS_SETDBGLEVEL:
1207 if (get_user(val, (unsigned long *) arg))
1208 return -EFAULT;
1209 cs_debuglevel = val;
1210 return 0;
1211 default:
1212 CS_DBGOUT(CS_ERROR, 1, printk(KERN_INFO
1213 "cs4297a: mixer_ioctl(): ERROR unknown debug cmd\n"));
1214 return 0;
1215 }
1216 }
1217 #endif
1218
1219 if (cmd == SOUND_MIXER_PRIVATE1) {
1220 return -EINVAL;
1221 }
1222 if (cmd == SOUND_MIXER_PRIVATE2) {
1223 // enable/disable/query spatializer
1224 if (get_user(val, (int *) arg))
1225 return -EFAULT;
1226 if (val != -1) {
1227 temp1 = (val & 0x3f) >> 2;
1228 cs4297a_write_ac97(s, AC97_3D_CONTROL, temp1);
1229 cs4297a_read_ac97(s, AC97_GENERAL_PURPOSE,
1230 &temp1);
1231 cs4297a_write_ac97(s, AC97_GENERAL_PURPOSE,
1232 temp1 | 0x2000);
1233 }
1234 cs4297a_read_ac97(s, AC97_3D_CONTROL, &temp1);
1235 return put_user((temp1 << 2) | 3, (int *) arg);
1236 }
1237 if (cmd == SOUND_MIXER_INFO) {
1238 mixer_info info;
1239 memset(&info, 0, sizeof(info));
1240 strlcpy(info.id, "CS4297a", sizeof(info.id));
1241 strlcpy(info.name, "Crystal CS4297a", sizeof(info.name));
1242 info.modify_counter = s->mix.modcnt;
1243 if (copy_to_user((void *) arg, &info, sizeof(info)))
1244 return -EFAULT;
1245 return 0;
1246 }
1247 if (cmd == SOUND_OLD_MIXER_INFO) {
1248 _old_mixer_info info;
1249 memset(&info, 0, sizeof(info));
1250 strlcpy(info.id, "CS4297a", sizeof(info.id));
1251 strlcpy(info.name, "Crystal CS4297a", sizeof(info.name));
1252 if (copy_to_user((void *) arg, &info, sizeof(info)))
1253 return -EFAULT;
1254 return 0;
1255 }
1256 if (cmd == OSS_GETVERSION)
1257 return put_user(SOUND_VERSION, (int *) arg);
1258
1259 if (_IOC_TYPE(cmd) != 'M' || _SIOC_SIZE(cmd) != sizeof(int))
1260 return -EINVAL;
1261
1262 // If ioctl has only the SIOC_READ bit(bit 31)
1263 // on, process the only-read commands.
1264 if (_SIOC_DIR(cmd) == _SIOC_READ) {
1265 switch (_IOC_NR(cmd)) {
1266 case SOUND_MIXER_RECSRC: // Arg contains a bit for each recording source
1267 cs4297a_read_ac97(s, AC97_RECORD_SELECT,
1268 &temp1);
1269 return put_user(mixer_src[temp1 & 7], (int *) arg);
1270
1271 case SOUND_MIXER_DEVMASK: // Arg contains a bit for each supported device
1272 return put_user(SOUND_MASK_PCM | SOUND_MASK_LINE |
1273 SOUND_MASK_VOLUME | SOUND_MASK_RECLEV,
1274 (int *) arg);
1275
1276 case SOUND_MIXER_RECMASK: // Arg contains a bit for each supported recording source
1277 return put_user(SOUND_MASK_LINE | SOUND_MASK_VOLUME,
1278 (int *) arg);
1279
1280 case SOUND_MIXER_STEREODEVS: // Mixer channels supporting stereo
1281 return put_user(SOUND_MASK_PCM | SOUND_MASK_LINE |
1282 SOUND_MASK_VOLUME | SOUND_MASK_RECLEV,
1283 (int *) arg);
1284
1285 case SOUND_MIXER_CAPS:
1286 return put_user(SOUND_CAP_EXCL_INPUT, (int *) arg);
1287
1288 default:
1289 i = _IOC_NR(cmd);
1290 if (i >= SOUND_MIXER_NRDEVICES
1291 || !(vidx = mixtable1[i]))
1292 return -EINVAL;
1293 return put_user(s->mix.vol[vidx - 1], (int *) arg);
1294 }
1295 }
1296 // If ioctl doesn't have both the SIOC_READ and
1297 // the SIOC_WRITE bit set, return invalid.
1298 if (_SIOC_DIR(cmd) != (_SIOC_READ | _SIOC_WRITE))
1299 return -EINVAL;
1300
1301 // Increment the count of volume writes.
1302 s->mix.modcnt++;
1303
1304 // Isolate the command; it must be a write.
1305 switch (_IOC_NR(cmd)) {
1306
1307 case SOUND_MIXER_RECSRC: // Arg contains a bit for each recording source
1308 if (get_user(val, (int *) arg))
1309 return -EFAULT;
1310 i = hweight32(val); // i = # bits on in val.
1311 if (i != 1) // One & only 1 bit must be on.
1312 return 0;
1313 for (i = 0; i < sizeof(mixer_src) / sizeof(int); i++) {
1314 if (val == mixer_src[i]) {
1315 temp1 = (i << 8) | i;
1316 cs4297a_write_ac97(s,
1317 AC97_RECORD_SELECT,
1318 temp1);
1319 return 0;
1320 }
1321 }
1322 return 0;
1323
1324 case SOUND_MIXER_VOLUME:
1325 if (get_user(val, (int *) arg))
1326 return -EFAULT;
1327 l = val & 0xff;
1328 if (l > 100)
1329 l = 100; // Max soundcard.h vol is 100.
1330 if (l < 6) {
1331 rl = 63;
1332 l = 0;
1333 } else
1334 rl = attentbl[(10 * l) / 100]; // Convert 0-100 vol to 63-0 atten.
1335
1336 r = (val >> 8) & 0xff;
1337 if (r > 100)
1338 r = 100; // Max right volume is 100, too
1339 if (r < 6) {
1340 rr = 63;
1341 r = 0;
1342 } else
1343 rr = attentbl[(10 * r) / 100]; // Convert volume to attenuation.
1344
1345 if ((rl > 60) && (rr > 60)) // If both l & r are 'low',
1346 temp1 = 0x8000; // turn on the mute bit.
1347 else
1348 temp1 = 0;
1349
1350 temp1 |= (rl << 8) | rr;
1351
1352 cs4297a_write_ac97(s, AC97_MASTER_VOL_STEREO, temp1);
1353 cs4297a_write_ac97(s, AC97_PHONE_VOL, temp1);
1354
1355 #ifdef OSS_DOCUMENTED_MIXER_SEMANTICS
1356 s->mix.vol[8] = ((unsigned int) r << 8) | l;
1357 #else
1358 s->mix.vol[8] = val;
1359 #endif
1360 return put_user(s->mix.vol[8], (int *) arg);
1361
1362 case SOUND_MIXER_SPEAKER:
1363 if (get_user(val, (int *) arg))
1364 return -EFAULT;
1365 l = val & 0xff;
1366 if (l > 100)
1367 l = 100;
1368 if (l < 3) {
1369 rl = 0;
1370 l = 0;
1371 } else {
1372 rl = (l * 2 - 5) / 13; // Convert 0-100 range to 0-15.
1373 l = (rl * 13 + 5) / 2;
1374 }
1375
1376 if (rl < 3) {
1377 temp1 = 0x8000;
1378 rl = 0;
1379 } else
1380 temp1 = 0;
1381 rl = 15 - rl; // Convert volume to attenuation.
1382 temp1 |= rl << 1;
1383 cs4297a_write_ac97(s, AC97_PCBEEP_VOL, temp1);
1384
1385 #ifdef OSS_DOCUMENTED_MIXER_SEMANTICS
1386 s->mix.vol[6] = l << 8;
1387 #else
1388 s->mix.vol[6] = val;
1389 #endif
1390 return put_user(s->mix.vol[6], (int *) arg);
1391
1392 case SOUND_MIXER_RECLEV:
1393 if (get_user(val, (int *) arg))
1394 return -EFAULT;
1395 l = val & 0xff;
1396 if (l > 100)
1397 l = 100;
1398 r = (val >> 8) & 0xff;
1399 if (r > 100)
1400 r = 100;
1401 rl = (l * 2 - 5) / 13; // Convert 0-100 scale to 0-15.
1402 rr = (r * 2 - 5) / 13;
1403 if (rl < 3 && rr < 3)
1404 temp1 = 0x8000;
1405 else
1406 temp1 = 0;
1407
1408 temp1 = temp1 | (rl << 8) | rr;
1409 cs4297a_write_ac97(s, AC97_RECORD_GAIN, temp1);
1410
1411 #ifdef OSS_DOCUMENTED_MIXER_SEMANTICS
1412 s->mix.vol[7] = ((unsigned int) r << 8) | l;
1413 #else
1414 s->mix.vol[7] = val;
1415 #endif
1416 return put_user(s->mix.vol[7], (int *) arg);
1417
1418 case SOUND_MIXER_MIC:
1419 if (get_user(val, (int *) arg))
1420 return -EFAULT;
1421 l = val & 0xff;
1422 if (l > 100)
1423 l = 100;
1424 if (l < 1) {
1425 l = 0;
1426 rl = 0;
1427 } else {
1428 rl = ((unsigned) l * 5 - 4) / 16; // Convert 0-100 range to 0-31.
1429 l = (rl * 16 + 4) / 5;
1430 }
1431 cs4297a_read_ac97(s, AC97_MIC_VOL, &temp1);
1432 temp1 &= 0x40; // Isolate 20db gain bit.
1433 if (rl < 3) {
1434 temp1 |= 0x8000;
1435 rl = 0;
1436 }
1437 rl = 31 - rl; // Convert volume to attenuation.
1438 temp1 |= rl;
1439 cs4297a_write_ac97(s, AC97_MIC_VOL, temp1);
1440
1441 #ifdef OSS_DOCUMENTED_MIXER_SEMANTICS
1442 s->mix.vol[5] = val << 8;
1443 #else
1444 s->mix.vol[5] = val;
1445 #endif
1446 return put_user(s->mix.vol[5], (int *) arg);
1447
1448
1449 case SOUND_MIXER_SYNTH:
1450 if (get_user(val, (int *) arg))
1451 return -EFAULT;
1452 l = val & 0xff;
1453 if (l > 100)
1454 l = 100;
1455 if (get_user(val, (int *) arg))
1456 return -EFAULT;
1457 r = (val >> 8) & 0xff;
1458 if (r > 100)
1459 r = 100;
1460 rl = (l * 2 - 11) / 3; // Convert 0-100 range to 0-63.
1461 rr = (r * 2 - 11) / 3;
1462 if (rl < 3) // If l is low, turn on
1463 temp1 = 0x0080; // the mute bit.
1464 else
1465 temp1 = 0;
1466
1467 rl = 63 - rl; // Convert vol to attenuation.
1468 // writel(temp1 | rl, s->pBA0 + FMLVC);
1469 if (rr < 3) // If rr is low, turn on
1470 temp1 = 0x0080; // the mute bit.
1471 else
1472 temp1 = 0;
1473 rr = 63 - rr; // Convert vol to attenuation.
1474 // writel(temp1 | rr, s->pBA0 + FMRVC);
1475
1476 #ifdef OSS_DOCUMENTED_MIXER_SEMANTICS
1477 s->mix.vol[4] = (r << 8) | l;
1478 #else
1479 s->mix.vol[4] = val;
1480 #endif
1481 return put_user(s->mix.vol[4], (int *) arg);
1482
1483
1484 default:
1485 CS_DBGOUT(CS_IOCTL, 4, printk(KERN_INFO
1486 "cs4297a: mixer_ioctl(): default\n"));
1487
1488 i = _IOC_NR(cmd);
1489 if (i >= SOUND_MIXER_NRDEVICES || !(vidx = mixtable1[i]))
1490 return -EINVAL;
1491 if (get_user(val, (int *) arg))
1492 return -EFAULT;
1493 l = val & 0xff;
1494 if (l > 100)
1495 l = 100;
1496 if (l < 1) {
1497 l = 0;
1498 rl = 31;
1499 } else
1500 rl = (attentbl[(l * 10) / 100]) >> 1;
1501
1502 r = (val >> 8) & 0xff;
1503 if (r > 100)
1504 r = 100;
1505 if (r < 1) {
1506 r = 0;
1507 rr = 31;
1508 } else
1509 rr = (attentbl[(r * 10) / 100]) >> 1;
1510 if ((rl > 30) && (rr > 30))
1511 temp1 = 0x8000;
1512 else
1513 temp1 = 0;
1514 temp1 = temp1 | (rl << 8) | rr;
1515 cs4297a_write_ac97(s, mixreg[vidx - 1], temp1);
1516
1517 #ifdef OSS_DOCUMENTED_MIXER_SEMANTICS
1518 s->mix.vol[vidx - 1] = ((unsigned int) r << 8) | l;
1519 #else
1520 s->mix.vol[vidx - 1] = val;
1521 #endif
1522 return put_user(s->mix.vol[vidx - 1], (int *) arg);
1523 }
1524 }
1525
1526
1527 // ---------------------------------------------------------------------
1528
cs4297a_open_mixdev(struct inode * inode,struct file * file)1529 static int cs4297a_open_mixdev(struct inode *inode, struct file *file)
1530 {
1531 int minor = iminor(inode);
1532 struct cs4297a_state *s=NULL;
1533 struct list_head *entry;
1534
1535 CS_DBGOUT(CS_FUNCTION | CS_OPEN, 4,
1536 printk(KERN_INFO "cs4297a: cs4297a_open_mixdev()+\n"));
1537
1538 mutex_lock(&swarm_cs4297a_mutex);
1539 list_for_each(entry, &cs4297a_devs)
1540 {
1541 s = list_entry(entry, struct cs4297a_state, list);
1542 if(s->dev_mixer == minor)
1543 break;
1544 }
1545 if (!s)
1546 {
1547 CS_DBGOUT(CS_FUNCTION | CS_OPEN | CS_ERROR, 2,
1548 printk(KERN_INFO "cs4297a: cs4297a_open_mixdev()- -ENODEV\n"));
1549
1550 mutex_unlock(&swarm_cs4297a_mutex);
1551 return -ENODEV;
1552 }
1553 VALIDATE_STATE(s);
1554 file->private_data = s;
1555
1556 CS_DBGOUT(CS_FUNCTION | CS_OPEN, 4,
1557 printk(KERN_INFO "cs4297a: cs4297a_open_mixdev()- 0\n"));
1558 mutex_unlock(&swarm_cs4297a_mutex);
1559
1560 return nonseekable_open(inode, file);
1561 }
1562
1563
cs4297a_release_mixdev(struct inode * inode,struct file * file)1564 static int cs4297a_release_mixdev(struct inode *inode, struct file *file)
1565 {
1566 struct cs4297a_state *s =
1567 (struct cs4297a_state *) file->private_data;
1568
1569 VALIDATE_STATE(s);
1570 return 0;
1571 }
1572
1573
cs4297a_ioctl_mixdev(struct file * file,unsigned int cmd,unsigned long arg)1574 static int cs4297a_ioctl_mixdev(struct file *file,
1575 unsigned int cmd, unsigned long arg)
1576 {
1577 int ret;
1578 mutex_lock(&swarm_cs4297a_mutex);
1579 ret = mixer_ioctl((struct cs4297a_state *) file->private_data, cmd,
1580 arg);
1581 mutex_unlock(&swarm_cs4297a_mutex);
1582 return ret;
1583 }
1584
1585
1586 // ******************************************************************************************
1587 // Mixer file operations struct.
1588 // ******************************************************************************************
1589 static const struct file_operations cs4297a_mixer_fops = {
1590 .owner = THIS_MODULE,
1591 .llseek = no_llseek,
1592 .unlocked_ioctl = cs4297a_ioctl_mixdev,
1593 .open = cs4297a_open_mixdev,
1594 .release = cs4297a_release_mixdev,
1595 };
1596
1597 // ---------------------------------------------------------------------
1598
1599
drain_adc(struct cs4297a_state * s,int nonblock)1600 static int drain_adc(struct cs4297a_state *s, int nonblock)
1601 {
1602 /* This routine serves no purpose currently - any samples
1603 sitting in the receive queue will just be processed by the
1604 background consumer. This would be different if DMA
1605 actually stopped when there were no clients. */
1606 return 0;
1607 }
1608
drain_dac(struct cs4297a_state * s,int nonblock)1609 static int drain_dac(struct cs4297a_state *s, int nonblock)
1610 {
1611 DECLARE_WAITQUEUE(wait, current);
1612 unsigned long flags;
1613 unsigned hwptr;
1614 unsigned tmo;
1615 int count;
1616
1617 if (s->dma_dac.mapped)
1618 return 0;
1619 if (nonblock)
1620 return -EBUSY;
1621 add_wait_queue(&s->dma_dac.wait, &wait);
1622 while ((count = __raw_readq(SS_CSR(R_SER_DMA_DSCR_COUNT_TX))) ||
1623 (s->dma_dac.count > 0)) {
1624 if (!signal_pending(current)) {
1625 set_current_state(TASK_INTERRUPTIBLE);
1626 /* XXXKW is this calculation working? */
1627 tmo = ((count * FRAME_TX_US) * HZ) / 1000000;
1628 schedule_timeout(tmo + 1);
1629 } else {
1630 /* XXXKW do I care if there is a signal pending? */
1631 }
1632 }
1633 spin_lock_irqsave(&s->lock, flags);
1634 /* Reset the bookkeeping */
1635 hwptr = (int)(((__raw_readq(SS_CSR(R_SER_DMA_CUR_DSCR_ADDR_TX)) & M_DMA_CURDSCR_ADDR) -
1636 s->dma_dac.descrtab_phys) / sizeof(serdma_descr_t));
1637 s->dma_dac.hwptr = s->dma_dac.swptr = hwptr;
1638 spin_unlock_irqrestore(&s->lock, flags);
1639 remove_wait_queue(&s->dma_dac.wait, &wait);
1640 current->state = TASK_RUNNING;
1641 return 0;
1642 }
1643
1644
1645 // ---------------------------------------------------------------------
1646
cs4297a_read(struct file * file,char * buffer,size_t count,loff_t * ppos)1647 static ssize_t cs4297a_read(struct file *file, char *buffer, size_t count,
1648 loff_t * ppos)
1649 {
1650 struct cs4297a_state *s =
1651 (struct cs4297a_state *) file->private_data;
1652 ssize_t ret;
1653 unsigned long flags;
1654 int cnt, count_fr, cnt_by;
1655 unsigned copied = 0;
1656
1657 CS_DBGOUT(CS_FUNCTION | CS_WAVE_READ, 2,
1658 printk(KERN_INFO "cs4297a: cs4297a_read()+ %d \n", count));
1659
1660 VALIDATE_STATE(s);
1661 if (s->dma_adc.mapped)
1662 return -ENXIO;
1663 if (!s->dma_adc.ready && (ret = prog_dmabuf_adc(s)))
1664 return ret;
1665 if (!access_ok(VERIFY_WRITE, buffer, count))
1666 return -EFAULT;
1667 ret = 0;
1668 //
1669 // "count" is the amount of bytes to read (from app), is decremented each loop
1670 // by the amount of bytes that have been returned to the user buffer.
1671 // "cnt" is the running total of each read from the buffer (changes each loop)
1672 // "buffer" points to the app's buffer
1673 // "ret" keeps a running total of the amount of bytes that have been copied
1674 // to the user buffer.
1675 // "copied" is the total bytes copied into the user buffer for each loop.
1676 //
1677 while (count > 0) {
1678 CS_DBGOUT(CS_WAVE_READ, 8, printk(KERN_INFO
1679 "_read() count>0 count=%d .count=%d .swptr=%d .hwptr=%d \n",
1680 count, s->dma_adc.count,
1681 s->dma_adc.swptr, s->dma_adc.hwptr));
1682 spin_lock_irqsave(&s->lock, flags);
1683
1684 /* cnt will be the number of available samples (16-bit
1685 stereo); it starts out as the maxmimum consequetive
1686 samples */
1687 cnt = (s->dma_adc.sb_end - s->dma_adc.sb_swptr) / 2;
1688 count_fr = s->dma_adc.count / FRAME_SAMPLE_BYTES;
1689
1690 // dma_adc.count is the current total bytes that have not been read.
1691 // if the amount of unread bytes from the current sw pointer to the
1692 // end of the buffer is greater than the current total bytes that
1693 // have not been read, then set the "cnt" (unread bytes) to the
1694 // amount of unread bytes.
1695
1696 if (count_fr < cnt)
1697 cnt = count_fr;
1698 cnt_by = cnt * FRAME_SAMPLE_BYTES;
1699 spin_unlock_irqrestore(&s->lock, flags);
1700 //
1701 // if we are converting from 8/16 then we need to copy
1702 // twice the number of 16 bit bytes then 8 bit bytes.
1703 //
1704 if (s->conversion) {
1705 if (cnt_by > (count * 2)) {
1706 cnt = (count * 2) / FRAME_SAMPLE_BYTES;
1707 cnt_by = count * 2;
1708 }
1709 } else {
1710 if (cnt_by > count) {
1711 cnt = count / FRAME_SAMPLE_BYTES;
1712 cnt_by = count;
1713 }
1714 }
1715 //
1716 // "cnt" NOW is the smaller of the amount that will be read,
1717 // and the amount that is requested in this read (or partial).
1718 // if there are no bytes in the buffer to read, then start the
1719 // ADC and wait for the interrupt handler to wake us up.
1720 //
1721 if (cnt <= 0) {
1722
1723 // start up the dma engine and then continue back to the top of
1724 // the loop when wake up occurs.
1725 start_adc(s);
1726 if (file->f_flags & O_NONBLOCK)
1727 return ret ? ret : -EAGAIN;
1728 interruptible_sleep_on(&s->dma_adc.wait);
1729 if (signal_pending(current))
1730 return ret ? ret : -ERESTARTSYS;
1731 continue;
1732 }
1733 // there are bytes in the buffer to read.
1734 // copy from the hw buffer over to the user buffer.
1735 // user buffer is designated by "buffer"
1736 // virtual address to copy from is dma_buf+swptr
1737 // the "cnt" is the number of bytes to read.
1738
1739 CS_DBGOUT(CS_WAVE_READ, 2, printk(KERN_INFO
1740 "_read() copy_to cnt=%d count=%d ", cnt_by, count));
1741 CS_DBGOUT(CS_WAVE_READ, 8, printk(KERN_INFO
1742 " .sbufsz=%d .count=%d buffer=0x%.8x ret=%d\n",
1743 s->dma_adc.sbufsz, s->dma_adc.count,
1744 (unsigned) buffer, ret));
1745
1746 if (copy_to_user (buffer, ((void *)s->dma_adc.sb_swptr), cnt_by))
1747 return ret ? ret : -EFAULT;
1748 copied = cnt_by;
1749
1750 /* Return the descriptors */
1751 spin_lock_irqsave(&s->lock, flags);
1752 CS_DBGOUT(CS_FUNCTION, 2,
1753 printk(KERN_INFO "cs4297a: upd_rcv sw->hw %x/%x\n", s->dma_adc.swptr, s->dma_adc.hwptr));
1754 s->dma_adc.count -= cnt_by;
1755 s->dma_adc.sb_swptr += cnt * 2;
1756 if (s->dma_adc.sb_swptr == s->dma_adc.sb_end)
1757 s->dma_adc.sb_swptr = s->dma_adc.sample_buf;
1758 spin_unlock_irqrestore(&s->lock, flags);
1759 count -= copied;
1760 buffer += copied;
1761 ret += copied;
1762 start_adc(s);
1763 }
1764 CS_DBGOUT(CS_FUNCTION | CS_WAVE_READ, 2,
1765 printk(KERN_INFO "cs4297a: cs4297a_read()- %d\n", ret));
1766 return ret;
1767 }
1768
1769
cs4297a_write(struct file * file,const char * buffer,size_t count,loff_t * ppos)1770 static ssize_t cs4297a_write(struct file *file, const char *buffer,
1771 size_t count, loff_t * ppos)
1772 {
1773 struct cs4297a_state *s =
1774 (struct cs4297a_state *) file->private_data;
1775 ssize_t ret;
1776 unsigned long flags;
1777 unsigned swptr, hwptr;
1778 int cnt;
1779
1780 CS_DBGOUT(CS_FUNCTION | CS_WAVE_WRITE, 2,
1781 printk(KERN_INFO "cs4297a: cs4297a_write()+ count=%d\n",
1782 count));
1783 VALIDATE_STATE(s);
1784
1785 if (s->dma_dac.mapped)
1786 return -ENXIO;
1787 if (!s->dma_dac.ready && (ret = prog_dmabuf_dac(s)))
1788 return ret;
1789 if (!access_ok(VERIFY_READ, buffer, count))
1790 return -EFAULT;
1791 ret = 0;
1792 while (count > 0) {
1793 serdma_t *d = &s->dma_dac;
1794 int copy_cnt;
1795 u32 *s_tmpl;
1796 u32 *t_tmpl;
1797 u32 left, right;
1798 int swap = (s->prop_dac.fmt == AFMT_S16_LE) || (s->prop_dac.fmt == AFMT_U16_LE);
1799
1800 /* XXXXXX this is broken for BLOAT_FACTOR */
1801 spin_lock_irqsave(&s->lock, flags);
1802 if (d->count < 0) {
1803 d->count = 0;
1804 d->swptr = d->hwptr;
1805 }
1806 if (d->underrun) {
1807 d->underrun = 0;
1808 hwptr = (unsigned) (((__raw_readq(SS_CSR(R_SER_DMA_CUR_DSCR_ADDR_TX)) & M_DMA_CURDSCR_ADDR) -
1809 d->descrtab_phys) / sizeof(serdma_descr_t));
1810 d->swptr = d->hwptr = hwptr;
1811 }
1812 swptr = d->swptr;
1813 cnt = d->sbufsz - (swptr * FRAME_SAMPLE_BYTES);
1814 /* Will this write fill up the buffer? */
1815 if (d->count + cnt > d->sbufsz)
1816 cnt = d->sbufsz - d->count;
1817 spin_unlock_irqrestore(&s->lock, flags);
1818 if (cnt > count)
1819 cnt = count;
1820 if (cnt <= 0) {
1821 start_dac(s);
1822 if (file->f_flags & O_NONBLOCK)
1823 return ret ? ret : -EAGAIN;
1824 interruptible_sleep_on(&d->wait);
1825 if (signal_pending(current))
1826 return ret ? ret : -ERESTARTSYS;
1827 continue;
1828 }
1829 if (copy_from_user(d->sample_buf, buffer, cnt))
1830 return ret ? ret : -EFAULT;
1831
1832 copy_cnt = cnt;
1833 s_tmpl = (u32 *)d->sample_buf;
1834 t_tmpl = (u32 *)(d->dma_buf + (swptr * 4));
1835
1836 /* XXXKW assuming 16-bit stereo! */
1837 do {
1838 u32 tmp;
1839
1840 t_tmpl[0] = cpu_to_be32(0x98000000);
1841
1842 tmp = be32_to_cpu(s_tmpl[0]);
1843 left = tmp & 0xffff;
1844 right = tmp >> 16;
1845 if (swap) {
1846 left = swab16(left);
1847 right = swab16(right);
1848 }
1849 t_tmpl[1] = cpu_to_be32(left >> 8);
1850 t_tmpl[2] = cpu_to_be32(((left & 0xff) << 24) |
1851 (right << 4));
1852
1853 s_tmpl++;
1854 t_tmpl += 8;
1855 copy_cnt -= 4;
1856 } while (copy_cnt);
1857
1858 /* Mux in any pending read/write accesses */
1859 if (s->reg_request) {
1860 *(u64 *)(d->dma_buf + (swptr * 4)) |=
1861 cpu_to_be64(s->reg_request);
1862 s->reg_request = 0;
1863 wake_up(&s->dma_dac.reg_wait);
1864 }
1865
1866 CS_DBGOUT(CS_WAVE_WRITE, 4,
1867 printk(KERN_INFO
1868 "cs4297a: copy in %d to swptr %x\n", cnt, swptr));
1869
1870 swptr = (swptr + (cnt/FRAME_SAMPLE_BYTES)) % d->ringsz;
1871 __raw_writeq(cnt/FRAME_SAMPLE_BYTES, SS_CSR(R_SER_DMA_DSCR_COUNT_TX));
1872 spin_lock_irqsave(&s->lock, flags);
1873 d->swptr = swptr;
1874 d->count += cnt;
1875 d->endcleared = 0;
1876 spin_unlock_irqrestore(&s->lock, flags);
1877 count -= cnt;
1878 buffer += cnt;
1879 ret += cnt;
1880 start_dac(s);
1881 }
1882 CS_DBGOUT(CS_FUNCTION | CS_WAVE_WRITE, 2,
1883 printk(KERN_INFO "cs4297a: cs4297a_write()- %d\n", ret));
1884 return ret;
1885 }
1886
1887
cs4297a_poll(struct file * file,struct poll_table_struct * wait)1888 static unsigned int cs4297a_poll(struct file *file,
1889 struct poll_table_struct *wait)
1890 {
1891 struct cs4297a_state *s =
1892 (struct cs4297a_state *) file->private_data;
1893 unsigned long flags;
1894 unsigned int mask = 0;
1895
1896 CS_DBGOUT(CS_FUNCTION | CS_WAVE_WRITE | CS_WAVE_READ, 4,
1897 printk(KERN_INFO "cs4297a: cs4297a_poll()+\n"));
1898 VALIDATE_STATE(s);
1899 if (file->f_mode & FMODE_WRITE) {
1900 CS_DBGOUT(CS_FUNCTION | CS_WAVE_WRITE | CS_WAVE_READ, 4,
1901 printk(KERN_INFO
1902 "cs4297a: cs4297a_poll() wait on FMODE_WRITE\n"));
1903 if(!s->dma_dac.ready && prog_dmabuf_dac(s))
1904 return 0;
1905 poll_wait(file, &s->dma_dac.wait, wait);
1906 }
1907 if (file->f_mode & FMODE_READ) {
1908 CS_DBGOUT(CS_FUNCTION | CS_WAVE_WRITE | CS_WAVE_READ, 4,
1909 printk(KERN_INFO
1910 "cs4297a: cs4297a_poll() wait on FMODE_READ\n"));
1911 if(!s->dma_dac.ready && prog_dmabuf_adc(s))
1912 return 0;
1913 poll_wait(file, &s->dma_adc.wait, wait);
1914 }
1915 spin_lock_irqsave(&s->lock, flags);
1916 cs4297a_update_ptr(s,CS_FALSE);
1917 if (file->f_mode & FMODE_WRITE) {
1918 if (s->dma_dac.mapped) {
1919 if (s->dma_dac.count >=
1920 (signed) s->dma_dac.fragsize) {
1921 if (s->dma_dac.wakeup)
1922 mask |= POLLOUT | POLLWRNORM;
1923 else
1924 mask = 0;
1925 s->dma_dac.wakeup = 0;
1926 }
1927 } else {
1928 if ((signed) (s->dma_dac.sbufsz/2) >= s->dma_dac.count)
1929 mask |= POLLOUT | POLLWRNORM;
1930 }
1931 } else if (file->f_mode & FMODE_READ) {
1932 if (s->dma_adc.mapped) {
1933 if (s->dma_adc.count >= (signed) s->dma_adc.fragsize)
1934 mask |= POLLIN | POLLRDNORM;
1935 } else {
1936 if (s->dma_adc.count > 0)
1937 mask |= POLLIN | POLLRDNORM;
1938 }
1939 }
1940 spin_unlock_irqrestore(&s->lock, flags);
1941 CS_DBGOUT(CS_FUNCTION | CS_WAVE_WRITE | CS_WAVE_READ, 4,
1942 printk(KERN_INFO "cs4297a: cs4297a_poll()- 0x%.8x\n",
1943 mask));
1944 return mask;
1945 }
1946
1947
cs4297a_mmap(struct file * file,struct vm_area_struct * vma)1948 static int cs4297a_mmap(struct file *file, struct vm_area_struct *vma)
1949 {
1950 /* XXXKW currently no mmap support */
1951 return -EINVAL;
1952 return 0;
1953 }
1954
1955
cs4297a_ioctl(struct file * file,unsigned int cmd,unsigned long arg)1956 static int cs4297a_ioctl(struct file *file,
1957 unsigned int cmd, unsigned long arg)
1958 {
1959 struct cs4297a_state *s =
1960 (struct cs4297a_state *) file->private_data;
1961 unsigned long flags;
1962 audio_buf_info abinfo;
1963 count_info cinfo;
1964 int val, mapped, ret;
1965
1966 CS_DBGOUT(CS_FUNCTION|CS_IOCTL, 4, printk(KERN_INFO
1967 "cs4297a: cs4297a_ioctl(): file=0x%.8x cmd=0x%.8x\n",
1968 (unsigned) file, cmd));
1969 #if CSDEBUG
1970 cs_printioctl(cmd);
1971 #endif
1972 VALIDATE_STATE(s);
1973 mapped = ((file->f_mode & FMODE_WRITE) && s->dma_dac.mapped) ||
1974 ((file->f_mode & FMODE_READ) && s->dma_adc.mapped);
1975 switch (cmd) {
1976 case OSS_GETVERSION:
1977 CS_DBGOUT(CS_IOCTL | CS_PARMS, 4, printk(KERN_INFO
1978 "cs4297a: cs4297a_ioctl(): SOUND_VERSION=0x%.8x\n",
1979 SOUND_VERSION));
1980 return put_user(SOUND_VERSION, (int *) arg);
1981
1982 case SNDCTL_DSP_SYNC:
1983 CS_DBGOUT(CS_IOCTL, 4, printk(KERN_INFO
1984 "cs4297a: cs4297a_ioctl(): DSP_SYNC\n"));
1985 if (file->f_mode & FMODE_WRITE)
1986 return drain_dac(s,
1987 0 /*file->f_flags & O_NONBLOCK */
1988 );
1989 return 0;
1990
1991 case SNDCTL_DSP_SETDUPLEX:
1992 return 0;
1993
1994 case SNDCTL_DSP_GETCAPS:
1995 return put_user(DSP_CAP_DUPLEX | DSP_CAP_REALTIME |
1996 DSP_CAP_TRIGGER | DSP_CAP_MMAP,
1997 (int *) arg);
1998
1999 case SNDCTL_DSP_RESET:
2000 CS_DBGOUT(CS_IOCTL, 4, printk(KERN_INFO
2001 "cs4297a: cs4297a_ioctl(): DSP_RESET\n"));
2002 if (file->f_mode & FMODE_WRITE) {
2003 stop_dac(s);
2004 synchronize_irq(s->irq);
2005 s->dma_dac.count = s->dma_dac.total_bytes =
2006 s->dma_dac.blocks = s->dma_dac.wakeup = 0;
2007 s->dma_dac.swptr = s->dma_dac.hwptr =
2008 (int)(((__raw_readq(SS_CSR(R_SER_DMA_CUR_DSCR_ADDR_TX)) & M_DMA_CURDSCR_ADDR) -
2009 s->dma_dac.descrtab_phys) / sizeof(serdma_descr_t));
2010 }
2011 if (file->f_mode & FMODE_READ) {
2012 stop_adc(s);
2013 synchronize_irq(s->irq);
2014 s->dma_adc.count = s->dma_adc.total_bytes =
2015 s->dma_adc.blocks = s->dma_dac.wakeup = 0;
2016 s->dma_adc.swptr = s->dma_adc.hwptr =
2017 (int)(((__raw_readq(SS_CSR(R_SER_DMA_CUR_DSCR_ADDR_RX)) & M_DMA_CURDSCR_ADDR) -
2018 s->dma_adc.descrtab_phys) / sizeof(serdma_descr_t));
2019 }
2020 return 0;
2021
2022 case SNDCTL_DSP_SPEED:
2023 if (get_user(val, (int *) arg))
2024 return -EFAULT;
2025 CS_DBGOUT(CS_IOCTL | CS_PARMS, 4, printk(KERN_INFO
2026 "cs4297a: cs4297a_ioctl(): DSP_SPEED val=%d -> 48000\n", val));
2027 val = 48000;
2028 return put_user(val, (int *) arg);
2029
2030 case SNDCTL_DSP_STEREO:
2031 if (get_user(val, (int *) arg))
2032 return -EFAULT;
2033 CS_DBGOUT(CS_IOCTL | CS_PARMS, 4, printk(KERN_INFO
2034 "cs4297a: cs4297a_ioctl(): DSP_STEREO val=%d\n", val));
2035 if (file->f_mode & FMODE_READ) {
2036 stop_adc(s);
2037 s->dma_adc.ready = 0;
2038 s->prop_adc.channels = val ? 2 : 1;
2039 }
2040 if (file->f_mode & FMODE_WRITE) {
2041 stop_dac(s);
2042 s->dma_dac.ready = 0;
2043 s->prop_dac.channels = val ? 2 : 1;
2044 }
2045 return 0;
2046
2047 case SNDCTL_DSP_CHANNELS:
2048 if (get_user(val, (int *) arg))
2049 return -EFAULT;
2050 CS_DBGOUT(CS_IOCTL | CS_PARMS, 4, printk(KERN_INFO
2051 "cs4297a: cs4297a_ioctl(): DSP_CHANNELS val=%d\n",
2052 val));
2053 if (val != 0) {
2054 if (file->f_mode & FMODE_READ) {
2055 stop_adc(s);
2056 s->dma_adc.ready = 0;
2057 if (val >= 2)
2058 s->prop_adc.channels = 2;
2059 else
2060 s->prop_adc.channels = 1;
2061 }
2062 if (file->f_mode & FMODE_WRITE) {
2063 stop_dac(s);
2064 s->dma_dac.ready = 0;
2065 if (val >= 2)
2066 s->prop_dac.channels = 2;
2067 else
2068 s->prop_dac.channels = 1;
2069 }
2070 }
2071
2072 if (file->f_mode & FMODE_WRITE)
2073 val = s->prop_dac.channels;
2074 else if (file->f_mode & FMODE_READ)
2075 val = s->prop_adc.channels;
2076
2077 return put_user(val, (int *) arg);
2078
2079 case SNDCTL_DSP_GETFMTS: // Returns a mask
2080 CS_DBGOUT(CS_IOCTL | CS_PARMS, 4, printk(KERN_INFO
2081 "cs4297a: cs4297a_ioctl(): DSP_GETFMT val=0x%.8x\n",
2082 AFMT_S16_LE | AFMT_U16_LE | AFMT_S8 |
2083 AFMT_U8));
2084 return put_user(AFMT_S16_LE | AFMT_U16_LE | AFMT_S8 |
2085 AFMT_U8, (int *) arg);
2086
2087 case SNDCTL_DSP_SETFMT:
2088 if (get_user(val, (int *) arg))
2089 return -EFAULT;
2090 CS_DBGOUT(CS_IOCTL | CS_PARMS, 4, printk(KERN_INFO
2091 "cs4297a: cs4297a_ioctl(): DSP_SETFMT val=0x%.8x\n",
2092 val));
2093 if (val != AFMT_QUERY) {
2094 if (file->f_mode & FMODE_READ) {
2095 stop_adc(s);
2096 s->dma_adc.ready = 0;
2097 if (val != AFMT_S16_LE
2098 && val != AFMT_U16_LE && val != AFMT_S8
2099 && val != AFMT_U8)
2100 val = AFMT_U8;
2101 s->prop_adc.fmt = val;
2102 s->prop_adc.fmt_original = s->prop_adc.fmt;
2103 }
2104 if (file->f_mode & FMODE_WRITE) {
2105 stop_dac(s);
2106 s->dma_dac.ready = 0;
2107 if (val != AFMT_S16_LE
2108 && val != AFMT_U16_LE && val != AFMT_S8
2109 && val != AFMT_U8)
2110 val = AFMT_U8;
2111 s->prop_dac.fmt = val;
2112 s->prop_dac.fmt_original = s->prop_dac.fmt;
2113 }
2114 } else {
2115 if (file->f_mode & FMODE_WRITE)
2116 val = s->prop_dac.fmt_original;
2117 else if (file->f_mode & FMODE_READ)
2118 val = s->prop_adc.fmt_original;
2119 }
2120 CS_DBGOUT(CS_IOCTL | CS_PARMS, 4, printk(KERN_INFO
2121 "cs4297a: cs4297a_ioctl(): DSP_SETFMT return val=0x%.8x\n",
2122 val));
2123 return put_user(val, (int *) arg);
2124
2125 case SNDCTL_DSP_POST:
2126 CS_DBGOUT(CS_IOCTL, 4, printk(KERN_INFO
2127 "cs4297a: cs4297a_ioctl(): DSP_POST\n"));
2128 return 0;
2129
2130 case SNDCTL_DSP_GETTRIGGER:
2131 val = 0;
2132 if (file->f_mode & s->ena & FMODE_READ)
2133 val |= PCM_ENABLE_INPUT;
2134 if (file->f_mode & s->ena & FMODE_WRITE)
2135 val |= PCM_ENABLE_OUTPUT;
2136 return put_user(val, (int *) arg);
2137
2138 case SNDCTL_DSP_SETTRIGGER:
2139 if (get_user(val, (int *) arg))
2140 return -EFAULT;
2141 if (file->f_mode & FMODE_READ) {
2142 if (val & PCM_ENABLE_INPUT) {
2143 if (!s->dma_adc.ready
2144 && (ret = prog_dmabuf_adc(s)))
2145 return ret;
2146 start_adc(s);
2147 } else
2148 stop_adc(s);
2149 }
2150 if (file->f_mode & FMODE_WRITE) {
2151 if (val & PCM_ENABLE_OUTPUT) {
2152 if (!s->dma_dac.ready
2153 && (ret = prog_dmabuf_dac(s)))
2154 return ret;
2155 start_dac(s);
2156 } else
2157 stop_dac(s);
2158 }
2159 return 0;
2160
2161 case SNDCTL_DSP_GETOSPACE:
2162 if (!(file->f_mode & FMODE_WRITE))
2163 return -EINVAL;
2164 if (!s->dma_dac.ready && (val = prog_dmabuf_dac(s)))
2165 return val;
2166 spin_lock_irqsave(&s->lock, flags);
2167 cs4297a_update_ptr(s,CS_FALSE);
2168 abinfo.fragsize = s->dma_dac.fragsize;
2169 if (s->dma_dac.mapped)
2170 abinfo.bytes = s->dma_dac.sbufsz;
2171 else
2172 abinfo.bytes =
2173 s->dma_dac.sbufsz - s->dma_dac.count;
2174 abinfo.fragstotal = s->dma_dac.numfrag;
2175 abinfo.fragments = abinfo.bytes >> s->dma_dac.fragshift;
2176 CS_DBGOUT(CS_FUNCTION | CS_PARMS, 4, printk(KERN_INFO
2177 "cs4297a: cs4297a_ioctl(): GETOSPACE .fragsize=%d .bytes=%d .fragstotal=%d .fragments=%d\n",
2178 abinfo.fragsize,abinfo.bytes,abinfo.fragstotal,
2179 abinfo.fragments));
2180 spin_unlock_irqrestore(&s->lock, flags);
2181 return copy_to_user((void *) arg, &abinfo,
2182 sizeof(abinfo)) ? -EFAULT : 0;
2183
2184 case SNDCTL_DSP_GETISPACE:
2185 if (!(file->f_mode & FMODE_READ))
2186 return -EINVAL;
2187 if (!s->dma_adc.ready && (val = prog_dmabuf_adc(s)))
2188 return val;
2189 spin_lock_irqsave(&s->lock, flags);
2190 cs4297a_update_ptr(s,CS_FALSE);
2191 if (s->conversion) {
2192 abinfo.fragsize = s->dma_adc.fragsize / 2;
2193 abinfo.bytes = s->dma_adc.count / 2;
2194 abinfo.fragstotal = s->dma_adc.numfrag;
2195 abinfo.fragments =
2196 abinfo.bytes >> (s->dma_adc.fragshift - 1);
2197 } else {
2198 abinfo.fragsize = s->dma_adc.fragsize;
2199 abinfo.bytes = s->dma_adc.count;
2200 abinfo.fragstotal = s->dma_adc.numfrag;
2201 abinfo.fragments =
2202 abinfo.bytes >> s->dma_adc.fragshift;
2203 }
2204 spin_unlock_irqrestore(&s->lock, flags);
2205 return copy_to_user((void *) arg, &abinfo,
2206 sizeof(abinfo)) ? -EFAULT : 0;
2207
2208 case SNDCTL_DSP_NONBLOCK:
2209 spin_lock(&file->f_lock);
2210 file->f_flags |= O_NONBLOCK;
2211 spin_unlock(&file->f_lock);
2212 return 0;
2213
2214 case SNDCTL_DSP_GETODELAY:
2215 if (!(file->f_mode & FMODE_WRITE))
2216 return -EINVAL;
2217 if(!s->dma_dac.ready && prog_dmabuf_dac(s))
2218 return 0;
2219 spin_lock_irqsave(&s->lock, flags);
2220 cs4297a_update_ptr(s,CS_FALSE);
2221 val = s->dma_dac.count;
2222 spin_unlock_irqrestore(&s->lock, flags);
2223 return put_user(val, (int *) arg);
2224
2225 case SNDCTL_DSP_GETIPTR:
2226 if (!(file->f_mode & FMODE_READ))
2227 return -EINVAL;
2228 if(!s->dma_adc.ready && prog_dmabuf_adc(s))
2229 return 0;
2230 spin_lock_irqsave(&s->lock, flags);
2231 cs4297a_update_ptr(s,CS_FALSE);
2232 cinfo.bytes = s->dma_adc.total_bytes;
2233 if (s->dma_adc.mapped) {
2234 cinfo.blocks =
2235 (cinfo.bytes >> s->dma_adc.fragshift) -
2236 s->dma_adc.blocks;
2237 s->dma_adc.blocks =
2238 cinfo.bytes >> s->dma_adc.fragshift;
2239 } else {
2240 if (s->conversion) {
2241 cinfo.blocks =
2242 s->dma_adc.count /
2243 2 >> (s->dma_adc.fragshift - 1);
2244 } else
2245 cinfo.blocks =
2246 s->dma_adc.count >> s->dma_adc.
2247 fragshift;
2248 }
2249 if (s->conversion)
2250 cinfo.ptr = s->dma_adc.hwptr / 2;
2251 else
2252 cinfo.ptr = s->dma_adc.hwptr;
2253 if (s->dma_adc.mapped)
2254 s->dma_adc.count &= s->dma_adc.fragsize - 1;
2255 spin_unlock_irqrestore(&s->lock, flags);
2256 return copy_to_user((void *) arg, &cinfo, sizeof(cinfo)) ? -EFAULT : 0;
2257
2258 case SNDCTL_DSP_GETOPTR:
2259 if (!(file->f_mode & FMODE_WRITE))
2260 return -EINVAL;
2261 if(!s->dma_dac.ready && prog_dmabuf_dac(s))
2262 return 0;
2263 spin_lock_irqsave(&s->lock, flags);
2264 cs4297a_update_ptr(s,CS_FALSE);
2265 cinfo.bytes = s->dma_dac.total_bytes;
2266 if (s->dma_dac.mapped) {
2267 cinfo.blocks =
2268 (cinfo.bytes >> s->dma_dac.fragshift) -
2269 s->dma_dac.blocks;
2270 s->dma_dac.blocks =
2271 cinfo.bytes >> s->dma_dac.fragshift;
2272 } else {
2273 cinfo.blocks =
2274 s->dma_dac.count >> s->dma_dac.fragshift;
2275 }
2276 cinfo.ptr = s->dma_dac.hwptr;
2277 if (s->dma_dac.mapped)
2278 s->dma_dac.count &= s->dma_dac.fragsize - 1;
2279 spin_unlock_irqrestore(&s->lock, flags);
2280 return copy_to_user((void *) arg, &cinfo, sizeof(cinfo)) ? -EFAULT : 0;
2281
2282 case SNDCTL_DSP_GETBLKSIZE:
2283 if (file->f_mode & FMODE_WRITE) {
2284 if ((val = prog_dmabuf_dac(s)))
2285 return val;
2286 return put_user(s->dma_dac.fragsize, (int *) arg);
2287 }
2288 if ((val = prog_dmabuf_adc(s)))
2289 return val;
2290 if (s->conversion)
2291 return put_user(s->dma_adc.fragsize / 2,
2292 (int *) arg);
2293 else
2294 return put_user(s->dma_adc.fragsize, (int *) arg);
2295
2296 case SNDCTL_DSP_SETFRAGMENT:
2297 if (get_user(val, (int *) arg))
2298 return -EFAULT;
2299 return 0; // Say OK, but do nothing.
2300
2301 case SNDCTL_DSP_SUBDIVIDE:
2302 if ((file->f_mode & FMODE_READ && s->dma_adc.subdivision)
2303 || (file->f_mode & FMODE_WRITE
2304 && s->dma_dac.subdivision)) return -EINVAL;
2305 if (get_user(val, (int *) arg))
2306 return -EFAULT;
2307 if (val != 1 && val != 2 && val != 4)
2308 return -EINVAL;
2309 if (file->f_mode & FMODE_READ)
2310 s->dma_adc.subdivision = val;
2311 else if (file->f_mode & FMODE_WRITE)
2312 s->dma_dac.subdivision = val;
2313 return 0;
2314
2315 case SOUND_PCM_READ_RATE:
2316 if (file->f_mode & FMODE_READ)
2317 return put_user(s->prop_adc.rate, (int *) arg);
2318 else if (file->f_mode & FMODE_WRITE)
2319 return put_user(s->prop_dac.rate, (int *) arg);
2320
2321 case SOUND_PCM_READ_CHANNELS:
2322 if (file->f_mode & FMODE_READ)
2323 return put_user(s->prop_adc.channels, (int *) arg);
2324 else if (file->f_mode & FMODE_WRITE)
2325 return put_user(s->prop_dac.channels, (int *) arg);
2326
2327 case SOUND_PCM_READ_BITS:
2328 if (file->f_mode & FMODE_READ)
2329 return
2330 put_user(
2331 (s->prop_adc.
2332 fmt & (AFMT_S8 | AFMT_U8)) ? 8 : 16,
2333 (int *) arg);
2334 else if (file->f_mode & FMODE_WRITE)
2335 return
2336 put_user(
2337 (s->prop_dac.
2338 fmt & (AFMT_S8 | AFMT_U8)) ? 8 : 16,
2339 (int *) arg);
2340
2341 case SOUND_PCM_WRITE_FILTER:
2342 case SNDCTL_DSP_SETSYNCRO:
2343 case SOUND_PCM_READ_FILTER:
2344 return -EINVAL;
2345 }
2346 return mixer_ioctl(s, cmd, arg);
2347 }
2348
cs4297a_unlocked_ioctl(struct file * file,u_int cmd,u_long arg)2349 static long cs4297a_unlocked_ioctl(struct file *file, u_int cmd, u_long arg)
2350 {
2351 int ret;
2352
2353 mutex_lock(&swarm_cs4297a_mutex);
2354 ret = cs4297a_ioctl(file, cmd, arg);
2355 mutex_unlock(&swarm_cs4297a_mutex);
2356
2357 return ret;
2358 }
2359
cs4297a_release(struct inode * inode,struct file * file)2360 static int cs4297a_release(struct inode *inode, struct file *file)
2361 {
2362 struct cs4297a_state *s =
2363 (struct cs4297a_state *) file->private_data;
2364
2365 CS_DBGOUT(CS_FUNCTION | CS_RELEASE, 2, printk(KERN_INFO
2366 "cs4297a: cs4297a_release(): inode=0x%.8x file=0x%.8x f_mode=0x%x\n",
2367 (unsigned) inode, (unsigned) file, file->f_mode));
2368 VALIDATE_STATE(s);
2369
2370 if (file->f_mode & FMODE_WRITE) {
2371 drain_dac(s, file->f_flags & O_NONBLOCK);
2372 mutex_lock(&s->open_sem_dac);
2373 stop_dac(s);
2374 dealloc_dmabuf(s, &s->dma_dac);
2375 s->open_mode &= ~FMODE_WRITE;
2376 mutex_unlock(&s->open_sem_dac);
2377 wake_up(&s->open_wait_dac);
2378 }
2379 if (file->f_mode & FMODE_READ) {
2380 drain_adc(s, file->f_flags & O_NONBLOCK);
2381 mutex_lock(&s->open_sem_adc);
2382 stop_adc(s);
2383 dealloc_dmabuf(s, &s->dma_adc);
2384 s->open_mode &= ~FMODE_READ;
2385 mutex_unlock(&s->open_sem_adc);
2386 wake_up(&s->open_wait_adc);
2387 }
2388 return 0;
2389 }
2390
cs4297a_locked_open(struct inode * inode,struct file * file)2391 static int cs4297a_locked_open(struct inode *inode, struct file *file)
2392 {
2393 int minor = iminor(inode);
2394 struct cs4297a_state *s=NULL;
2395 struct list_head *entry;
2396
2397 CS_DBGOUT(CS_FUNCTION | CS_OPEN, 2, printk(KERN_INFO
2398 "cs4297a: cs4297a_open(): inode=0x%.8x file=0x%.8x f_mode=0x%x\n",
2399 (unsigned) inode, (unsigned) file, file->f_mode));
2400 CS_DBGOUT(CS_FUNCTION | CS_OPEN, 2, printk(KERN_INFO
2401 "cs4297a: status = %08x\n", (int)__raw_readq(SS_CSR(R_SER_STATUS_DEBUG))));
2402
2403 list_for_each(entry, &cs4297a_devs)
2404 {
2405 s = list_entry(entry, struct cs4297a_state, list);
2406
2407 if (!((s->dev_audio ^ minor) & ~0xf))
2408 break;
2409 }
2410 if (entry == &cs4297a_devs)
2411 return -ENODEV;
2412 if (!s) {
2413 CS_DBGOUT(CS_FUNCTION | CS_OPEN, 2, printk(KERN_INFO
2414 "cs4297a: cs4297a_open(): Error - unable to find audio state struct\n"));
2415 return -ENODEV;
2416 }
2417 VALIDATE_STATE(s);
2418 file->private_data = s;
2419
2420 // wait for device to become free
2421 if (!(file->f_mode & (FMODE_WRITE | FMODE_READ))) {
2422 CS_DBGOUT(CS_FUNCTION | CS_OPEN | CS_ERROR, 2, printk(KERN_INFO
2423 "cs4297a: cs4297a_open(): Error - must open READ and/or WRITE\n"));
2424 return -ENODEV;
2425 }
2426 if (file->f_mode & FMODE_WRITE) {
2427 if (__raw_readq(SS_CSR(R_SER_DMA_DSCR_COUNT_TX)) != 0) {
2428 printk(KERN_ERR "cs4297a: TX pipe needs to drain\n");
2429 while (__raw_readq(SS_CSR(R_SER_DMA_DSCR_COUNT_TX)))
2430 ;
2431 }
2432
2433 mutex_lock(&s->open_sem_dac);
2434 while (s->open_mode & FMODE_WRITE) {
2435 if (file->f_flags & O_NONBLOCK) {
2436 mutex_unlock(&s->open_sem_dac);
2437 return -EBUSY;
2438 }
2439 mutex_unlock(&s->open_sem_dac);
2440 interruptible_sleep_on(&s->open_wait_dac);
2441
2442 if (signal_pending(current)) {
2443 printk("open - sig pending\n");
2444 return -ERESTARTSYS;
2445 }
2446 mutex_lock(&s->open_sem_dac);
2447 }
2448 }
2449 if (file->f_mode & FMODE_READ) {
2450 mutex_lock(&s->open_sem_adc);
2451 while (s->open_mode & FMODE_READ) {
2452 if (file->f_flags & O_NONBLOCK) {
2453 mutex_unlock(&s->open_sem_adc);
2454 return -EBUSY;
2455 }
2456 mutex_unlock(&s->open_sem_adc);
2457 interruptible_sleep_on(&s->open_wait_adc);
2458
2459 if (signal_pending(current)) {
2460 printk("open - sig pending\n");
2461 return -ERESTARTSYS;
2462 }
2463 mutex_lock(&s->open_sem_adc);
2464 }
2465 }
2466 s->open_mode |= file->f_mode & (FMODE_READ | FMODE_WRITE);
2467 if (file->f_mode & FMODE_READ) {
2468 s->prop_adc.fmt = AFMT_S16_BE;
2469 s->prop_adc.fmt_original = s->prop_adc.fmt;
2470 s->prop_adc.channels = 2;
2471 s->prop_adc.rate = 48000;
2472 s->conversion = 0;
2473 s->ena &= ~FMODE_READ;
2474 s->dma_adc.ossfragshift = s->dma_adc.ossmaxfrags =
2475 s->dma_adc.subdivision = 0;
2476 mutex_unlock(&s->open_sem_adc);
2477
2478 if (prog_dmabuf_adc(s)) {
2479 CS_DBGOUT(CS_OPEN | CS_ERROR, 2, printk(KERN_ERR
2480 "cs4297a: adc Program dmabufs failed.\n"));
2481 cs4297a_release(inode, file);
2482 return -ENOMEM;
2483 }
2484 }
2485 if (file->f_mode & FMODE_WRITE) {
2486 s->prop_dac.fmt = AFMT_S16_BE;
2487 s->prop_dac.fmt_original = s->prop_dac.fmt;
2488 s->prop_dac.channels = 2;
2489 s->prop_dac.rate = 48000;
2490 s->conversion = 0;
2491 s->ena &= ~FMODE_WRITE;
2492 s->dma_dac.ossfragshift = s->dma_dac.ossmaxfrags =
2493 s->dma_dac.subdivision = 0;
2494 mutex_unlock(&s->open_sem_dac);
2495
2496 if (prog_dmabuf_dac(s)) {
2497 CS_DBGOUT(CS_OPEN | CS_ERROR, 2, printk(KERN_ERR
2498 "cs4297a: dac Program dmabufs failed.\n"));
2499 cs4297a_release(inode, file);
2500 return -ENOMEM;
2501 }
2502 }
2503 CS_DBGOUT(CS_FUNCTION | CS_OPEN, 2,
2504 printk(KERN_INFO "cs4297a: cs4297a_open()- 0\n"));
2505 return nonseekable_open(inode, file);
2506 }
2507
cs4297a_open(struct inode * inode,struct file * file)2508 static int cs4297a_open(struct inode *inode, struct file *file)
2509 {
2510 int ret;
2511
2512 mutex_lock(&swarm_cs4297a_mutex);
2513 ret = cs4297a_open(inode, file);
2514 mutex_unlock(&swarm_cs4297a_mutex);
2515
2516 return ret;
2517 }
2518
2519 // ******************************************************************************************
2520 // Wave (audio) file operations struct.
2521 // ******************************************************************************************
2522 static const struct file_operations cs4297a_audio_fops = {
2523 .owner = THIS_MODULE,
2524 .llseek = no_llseek,
2525 .read = cs4297a_read,
2526 .write = cs4297a_write,
2527 .poll = cs4297a_poll,
2528 .unlocked_ioctl = cs4297a_unlocked_ioctl,
2529 .mmap = cs4297a_mmap,
2530 .open = cs4297a_open,
2531 .release = cs4297a_release,
2532 };
2533
cs4297a_interrupt(int irq,void * dev_id)2534 static void cs4297a_interrupt(int irq, void *dev_id)
2535 {
2536 struct cs4297a_state *s = (struct cs4297a_state *) dev_id;
2537 u32 status;
2538
2539 status = __raw_readq(SS_CSR(R_SER_STATUS_DEBUG));
2540
2541 CS_DBGOUT(CS_INTERRUPT, 6, printk(KERN_INFO
2542 "cs4297a: cs4297a_interrupt() HISR=0x%.8x\n", status));
2543
2544 #if 0
2545 /* XXXKW what check *should* be done here? */
2546 if (!(status & (M_SYNCSER_RX_EOP_COUNT | M_SYNCSER_RX_OVERRUN | M_SYNCSER_RX_SYNC_ERR))) {
2547 status = __raw_readq(SS_CSR(R_SER_STATUS));
2548 printk(KERN_ERR "cs4297a: unexpected interrupt (status %08x)\n", status);
2549 return;
2550 }
2551 #endif
2552
2553 if (status & M_SYNCSER_RX_SYNC_ERR) {
2554 status = __raw_readq(SS_CSR(R_SER_STATUS));
2555 printk(KERN_ERR "cs4297a: rx sync error (status %08x)\n", status);
2556 return;
2557 }
2558
2559 if (status & M_SYNCSER_RX_OVERRUN) {
2560 int newptr, i;
2561 s->stats.rx_ovrrn++;
2562 printk(KERN_ERR "cs4297a: receive FIFO overrun\n");
2563
2564 /* Fix things up: get the receive descriptor pool
2565 clean and give them back to the hardware */
2566 while (__raw_readq(SS_CSR(R_SER_DMA_DSCR_COUNT_RX)))
2567 ;
2568 newptr = (unsigned) (((__raw_readq(SS_CSR(R_SER_DMA_CUR_DSCR_ADDR_RX)) & M_DMA_CURDSCR_ADDR) -
2569 s->dma_adc.descrtab_phys) / sizeof(serdma_descr_t));
2570 for (i=0; i<DMA_DESCR; i++) {
2571 s->dma_adc.descrtab[i].descr_a &= ~M_DMA_SERRX_SOP;
2572 }
2573 s->dma_adc.swptr = s->dma_adc.hwptr = newptr;
2574 s->dma_adc.count = 0;
2575 s->dma_adc.sb_swptr = s->dma_adc.sb_hwptr = s->dma_adc.sample_buf;
2576 __raw_writeq(DMA_DESCR, SS_CSR(R_SER_DMA_DSCR_COUNT_RX));
2577 }
2578
2579 spin_lock(&s->lock);
2580 cs4297a_update_ptr(s,CS_TRUE);
2581 spin_unlock(&s->lock);
2582
2583 CS_DBGOUT(CS_INTERRUPT, 6, printk(KERN_INFO
2584 "cs4297a: cs4297a_interrupt()-\n"));
2585 }
2586
2587 #if 0
2588 static struct initvol {
2589 int mixch;
2590 int vol;
2591 } initvol[] __initdata = {
2592
2593 {SOUND_MIXER_WRITE_VOLUME, 0x4040},
2594 {SOUND_MIXER_WRITE_PCM, 0x4040},
2595 {SOUND_MIXER_WRITE_SYNTH, 0x4040},
2596 {SOUND_MIXER_WRITE_CD, 0x4040},
2597 {SOUND_MIXER_WRITE_LINE, 0x4040},
2598 {SOUND_MIXER_WRITE_LINE1, 0x4040},
2599 {SOUND_MIXER_WRITE_RECLEV, 0x0000},
2600 {SOUND_MIXER_WRITE_SPEAKER, 0x4040},
2601 {SOUND_MIXER_WRITE_MIC, 0x0000}
2602 };
2603 #endif
2604
cs4297a_init(void)2605 static int __init cs4297a_init(void)
2606 {
2607 struct cs4297a_state *s;
2608 u32 pwr, id;
2609 mm_segment_t fs;
2610 int rval;
2611 #ifndef CONFIG_BCM_CS4297A_CSWARM
2612 u64 cfg;
2613 int mdio_val;
2614 #endif
2615
2616 CS_DBGOUT(CS_INIT | CS_FUNCTION, 2, printk(KERN_INFO
2617 "cs4297a: cs4297a_init_module()+ \n"));
2618
2619 #ifndef CONFIG_BCM_CS4297A_CSWARM
2620 mdio_val = __raw_readq(KSEG1 + A_MAC_REGISTER(2, R_MAC_MDIO)) &
2621 (M_MAC_MDIO_DIR|M_MAC_MDIO_OUT);
2622
2623 /* Check syscfg for synchronous serial on port 1 */
2624 cfg = __raw_readq(KSEG1 + A_SCD_SYSTEM_CFG);
2625 if (!(cfg & M_SYS_SER1_ENABLE)) {
2626 __raw_writeq(cfg | M_SYS_SER1_ENABLE, KSEG1+A_SCD_SYSTEM_CFG);
2627 cfg = __raw_readq(KSEG1 + A_SCD_SYSTEM_CFG);
2628 if (!(cfg & M_SYS_SER1_ENABLE)) {
2629 printk(KERN_INFO "cs4297a: serial port 1 not configured for synchronous operation\n");
2630 return -1;
2631 }
2632
2633 printk(KERN_INFO "cs4297a: serial port 1 switching to synchronous operation\n");
2634
2635 /* Force the codec (on SWARM) to reset by clearing
2636 GENO, preserving MDIO (no effect on CSWARM) */
2637 __raw_writeq(mdio_val, KSEG1+A_MAC_REGISTER(2, R_MAC_MDIO));
2638 udelay(10);
2639 }
2640
2641 /* Now set GENO */
2642 __raw_writeq(mdio_val | M_MAC_GENC, KSEG1+A_MAC_REGISTER(2, R_MAC_MDIO));
2643 /* Give the codec some time to finish resetting (start the bit clock) */
2644 udelay(100);
2645 #endif
2646
2647 if (!(s = kzalloc(sizeof(struct cs4297a_state), GFP_KERNEL))) {
2648 CS_DBGOUT(CS_ERROR, 1, printk(KERN_ERR
2649 "cs4297a: probe() no memory for state struct.\n"));
2650 return -1;
2651 }
2652 s->magic = CS4297a_MAGIC;
2653 init_waitqueue_head(&s->dma_adc.wait);
2654 init_waitqueue_head(&s->dma_dac.wait);
2655 init_waitqueue_head(&s->dma_adc.reg_wait);
2656 init_waitqueue_head(&s->dma_dac.reg_wait);
2657 init_waitqueue_head(&s->open_wait);
2658 init_waitqueue_head(&s->open_wait_adc);
2659 init_waitqueue_head(&s->open_wait_dac);
2660 mutex_init(&s->open_sem_adc);
2661 mutex_init(&s->open_sem_dac);
2662 spin_lock_init(&s->lock);
2663
2664 s->irq = K_INT_SER_1;
2665
2666 if (request_irq
2667 (s->irq, cs4297a_interrupt, 0, "Crystal CS4297a", s)) {
2668 CS_DBGOUT(CS_INIT | CS_ERROR, 1,
2669 printk(KERN_ERR "cs4297a: irq %u in use\n", s->irq));
2670 goto err_irq;
2671 }
2672 if ((s->dev_audio = register_sound_dsp(&cs4297a_audio_fops, -1)) <
2673 0) {
2674 CS_DBGOUT(CS_INIT | CS_ERROR, 1, printk(KERN_ERR
2675 "cs4297a: probe() register_sound_dsp() failed.\n"));
2676 goto err_dev1;
2677 }
2678 if ((s->dev_mixer = register_sound_mixer(&cs4297a_mixer_fops, -1)) <
2679 0) {
2680 CS_DBGOUT(CS_INIT | CS_ERROR, 1, printk(KERN_ERR
2681 "cs4297a: probe() register_sound_mixer() failed.\n"));
2682 goto err_dev2;
2683 }
2684
2685 if (ser_init(s) || dma_init(s)) {
2686 CS_DBGOUT(CS_INIT | CS_ERROR, 1, printk(KERN_ERR
2687 "cs4297a: ser_init failed.\n"));
2688 goto err_dev3;
2689 }
2690
2691 do {
2692 udelay(4000);
2693 rval = cs4297a_read_ac97(s, AC97_POWER_CONTROL, &pwr);
2694 } while (!rval && (pwr != 0xf));
2695
2696 if (!rval) {
2697 char *sb1250_duart_present;
2698
2699 fs = get_fs();
2700 set_fs(KERNEL_DS);
2701 #if 0
2702 val = SOUND_MASK_LINE;
2703 mixer_ioctl(s, SOUND_MIXER_WRITE_RECSRC, (unsigned long) &val);
2704 for (i = 0; i < ARRAY_SIZE(initvol); i++) {
2705 val = initvol[i].vol;
2706 mixer_ioctl(s, initvol[i].mixch, (unsigned long) &val);
2707 }
2708 // cs4297a_write_ac97(s, 0x18, 0x0808);
2709 #else
2710 // cs4297a_write_ac97(s, 0x5e, 0x180);
2711 cs4297a_write_ac97(s, 0x02, 0x0808);
2712 cs4297a_write_ac97(s, 0x18, 0x0808);
2713 #endif
2714 set_fs(fs);
2715
2716 list_add(&s->list, &cs4297a_devs);
2717
2718 cs4297a_read_ac97(s, AC97_VENDOR_ID1, &id);
2719
2720 sb1250_duart_present = symbol_get(sb1250_duart_present);
2721 if (sb1250_duart_present)
2722 sb1250_duart_present[1] = 0;
2723
2724 printk(KERN_INFO "cs4297a: initialized (vendor id = %x)\n", id);
2725
2726 CS_DBGOUT(CS_INIT | CS_FUNCTION, 2,
2727 printk(KERN_INFO "cs4297a: cs4297a_init_module()-\n"));
2728
2729 return 0;
2730 }
2731
2732 err_dev3:
2733 unregister_sound_mixer(s->dev_mixer);
2734 err_dev2:
2735 unregister_sound_dsp(s->dev_audio);
2736 err_dev1:
2737 free_irq(s->irq, s);
2738 err_irq:
2739 kfree(s);
2740
2741 printk(KERN_INFO "cs4297a: initialization failed\n");
2742
2743 return -1;
2744 }
2745
cs4297a_cleanup(void)2746 static void __exit cs4297a_cleanup(void)
2747 {
2748 /*
2749 XXXKW
2750 disable_irq, free_irq
2751 drain DMA queue
2752 disable DMA
2753 disable TX/RX
2754 free memory
2755 */
2756 CS_DBGOUT(CS_INIT | CS_FUNCTION, 2,
2757 printk(KERN_INFO "cs4297a: cleanup_cs4297a() finished\n"));
2758 }
2759
2760 // ---------------------------------------------------------------------
2761
2762 MODULE_AUTHOR("Kip Walker, Broadcom Corp.");
2763 MODULE_DESCRIPTION("Cirrus Logic CS4297a Driver for Broadcom SWARM board");
2764
2765 // ---------------------------------------------------------------------
2766
2767 module_init(cs4297a_init);
2768 module_exit(cs4297a_cleanup);
2769