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Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nftables
[deliverable/linux.git] / sound / pci / atiixp.c
1 /*
2 * ALSA driver for ATI IXP 150/200/250/300 AC97 controllers
3 *
4 * Copyright (c) 2004 Takashi Iwai <tiwai@suse.de>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 *
20 */
21
22 #include <asm/io.h>
23 #include <linux/delay.h>
24 #include <linux/interrupt.h>
25 #include <linux/init.h>
26 #include <linux/pci.h>
27 #include <linux/slab.h>
28 #include <linux/module.h>
29 #include <linux/mutex.h>
30 #include <sound/core.h>
31 #include <sound/pcm.h>
32 #include <sound/pcm_params.h>
33 #include <sound/info.h>
34 #include <sound/ac97_codec.h>
35 #include <sound/initval.h>
36
37 MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>");
38 MODULE_DESCRIPTION("ATI IXP AC97 controller");
39 MODULE_LICENSE("GPL");
40 MODULE_SUPPORTED_DEVICE("{{ATI,IXP150/200/250/300/400/600}}");
41
42 static int index = SNDRV_DEFAULT_IDX1; /* Index 0-MAX */
43 static char *id = SNDRV_DEFAULT_STR1; /* ID for this card */
44 static int ac97_clock = 48000;
45 static char *ac97_quirk;
46 static bool spdif_aclink = 1;
47 static int ac97_codec = -1;
48
49 module_param(index, int, 0444);
50 MODULE_PARM_DESC(index, "Index value for ATI IXP controller.");
51 module_param(id, charp, 0444);
52 MODULE_PARM_DESC(id, "ID string for ATI IXP controller.");
53 module_param(ac97_clock, int, 0444);
54 MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz).");
55 module_param(ac97_quirk, charp, 0444);
56 MODULE_PARM_DESC(ac97_quirk, "AC'97 workaround for strange hardware.");
57 module_param(ac97_codec, int, 0444);
58 MODULE_PARM_DESC(ac97_codec, "Specify codec instead of probing.");
59 module_param(spdif_aclink, bool, 0444);
60 MODULE_PARM_DESC(spdif_aclink, "S/PDIF over AC-link.");
61
62 /* just for backward compatibility */
63 static bool enable;
64 module_param(enable, bool, 0444);
65
66
67 /*
68 */
69
70 #define ATI_REG_ISR 0x00 /* interrupt source */
71 #define ATI_REG_ISR_IN_XRUN (1U<<0)
72 #define ATI_REG_ISR_IN_STATUS (1U<<1)
73 #define ATI_REG_ISR_OUT_XRUN (1U<<2)
74 #define ATI_REG_ISR_OUT_STATUS (1U<<3)
75 #define ATI_REG_ISR_SPDF_XRUN (1U<<4)
76 #define ATI_REG_ISR_SPDF_STATUS (1U<<5)
77 #define ATI_REG_ISR_PHYS_INTR (1U<<8)
78 #define ATI_REG_ISR_PHYS_MISMATCH (1U<<9)
79 #define ATI_REG_ISR_CODEC0_NOT_READY (1U<<10)
80 #define ATI_REG_ISR_CODEC1_NOT_READY (1U<<11)
81 #define ATI_REG_ISR_CODEC2_NOT_READY (1U<<12)
82 #define ATI_REG_ISR_NEW_FRAME (1U<<13)
83
84 #define ATI_REG_IER 0x04 /* interrupt enable */
85 #define ATI_REG_IER_IN_XRUN_EN (1U<<0)
86 #define ATI_REG_IER_IO_STATUS_EN (1U<<1)
87 #define ATI_REG_IER_OUT_XRUN_EN (1U<<2)
88 #define ATI_REG_IER_OUT_XRUN_COND (1U<<3)
89 #define ATI_REG_IER_SPDF_XRUN_EN (1U<<4)
90 #define ATI_REG_IER_SPDF_STATUS_EN (1U<<5)
91 #define ATI_REG_IER_PHYS_INTR_EN (1U<<8)
92 #define ATI_REG_IER_PHYS_MISMATCH_EN (1U<<9)
93 #define ATI_REG_IER_CODEC0_INTR_EN (1U<<10)
94 #define ATI_REG_IER_CODEC1_INTR_EN (1U<<11)
95 #define ATI_REG_IER_CODEC2_INTR_EN (1U<<12)
96 #define ATI_REG_IER_NEW_FRAME_EN (1U<<13) /* (RO */
97 #define ATI_REG_IER_SET_BUS_BUSY (1U<<14) /* (WO) audio is running */
98
99 #define ATI_REG_CMD 0x08 /* command */
100 #define ATI_REG_CMD_POWERDOWN (1U<<0)
101 #define ATI_REG_CMD_RECEIVE_EN (1U<<1)
102 #define ATI_REG_CMD_SEND_EN (1U<<2)
103 #define ATI_REG_CMD_STATUS_MEM (1U<<3)
104 #define ATI_REG_CMD_SPDF_OUT_EN (1U<<4)
105 #define ATI_REG_CMD_SPDF_STATUS_MEM (1U<<5)
106 #define ATI_REG_CMD_SPDF_THRESHOLD (3U<<6)
107 #define ATI_REG_CMD_SPDF_THRESHOLD_SHIFT 6
108 #define ATI_REG_CMD_IN_DMA_EN (1U<<8)
109 #define ATI_REG_CMD_OUT_DMA_EN (1U<<9)
110 #define ATI_REG_CMD_SPDF_DMA_EN (1U<<10)
111 #define ATI_REG_CMD_SPDF_OUT_STOPPED (1U<<11)
112 #define ATI_REG_CMD_SPDF_CONFIG_MASK (7U<<12)
113 #define ATI_REG_CMD_SPDF_CONFIG_34 (1U<<12)
114 #define ATI_REG_CMD_SPDF_CONFIG_78 (2U<<12)
115 #define ATI_REG_CMD_SPDF_CONFIG_69 (3U<<12)
116 #define ATI_REG_CMD_SPDF_CONFIG_01 (4U<<12)
117 #define ATI_REG_CMD_INTERLEAVE_SPDF (1U<<16)
118 #define ATI_REG_CMD_AUDIO_PRESENT (1U<<20)
119 #define ATI_REG_CMD_INTERLEAVE_IN (1U<<21)
120 #define ATI_REG_CMD_INTERLEAVE_OUT (1U<<22)
121 #define ATI_REG_CMD_LOOPBACK_EN (1U<<23)
122 #define ATI_REG_CMD_PACKED_DIS (1U<<24)
123 #define ATI_REG_CMD_BURST_EN (1U<<25)
124 #define ATI_REG_CMD_PANIC_EN (1U<<26)
125 #define ATI_REG_CMD_MODEM_PRESENT (1U<<27)
126 #define ATI_REG_CMD_ACLINK_ACTIVE (1U<<28)
127 #define ATI_REG_CMD_AC_SOFT_RESET (1U<<29)
128 #define ATI_REG_CMD_AC_SYNC (1U<<30)
129 #define ATI_REG_CMD_AC_RESET (1U<<31)
130
131 #define ATI_REG_PHYS_OUT_ADDR 0x0c
132 #define ATI_REG_PHYS_OUT_CODEC_MASK (3U<<0)
133 #define ATI_REG_PHYS_OUT_RW (1U<<2)
134 #define ATI_REG_PHYS_OUT_ADDR_EN (1U<<8)
135 #define ATI_REG_PHYS_OUT_ADDR_SHIFT 9
136 #define ATI_REG_PHYS_OUT_DATA_SHIFT 16
137
138 #define ATI_REG_PHYS_IN_ADDR 0x10
139 #define ATI_REG_PHYS_IN_READ_FLAG (1U<<8)
140 #define ATI_REG_PHYS_IN_ADDR_SHIFT 9
141 #define ATI_REG_PHYS_IN_DATA_SHIFT 16
142
143 #define ATI_REG_SLOTREQ 0x14
144
145 #define ATI_REG_COUNTER 0x18
146 #define ATI_REG_COUNTER_SLOT (3U<<0) /* slot # */
147 #define ATI_REG_COUNTER_BITCLOCK (31U<<8)
148
149 #define ATI_REG_IN_FIFO_THRESHOLD 0x1c
150
151 #define ATI_REG_IN_DMA_LINKPTR 0x20
152 #define ATI_REG_IN_DMA_DT_START 0x24 /* RO */
153 #define ATI_REG_IN_DMA_DT_NEXT 0x28 /* RO */
154 #define ATI_REG_IN_DMA_DT_CUR 0x2c /* RO */
155 #define ATI_REG_IN_DMA_DT_SIZE 0x30
156
157 #define ATI_REG_OUT_DMA_SLOT 0x34
158 #define ATI_REG_OUT_DMA_SLOT_BIT(x) (1U << ((x) - 3))
159 #define ATI_REG_OUT_DMA_SLOT_MASK 0x1ff
160 #define ATI_REG_OUT_DMA_THRESHOLD_MASK 0xf800
161 #define ATI_REG_OUT_DMA_THRESHOLD_SHIFT 11
162
163 #define ATI_REG_OUT_DMA_LINKPTR 0x38
164 #define ATI_REG_OUT_DMA_DT_START 0x3c /* RO */
165 #define ATI_REG_OUT_DMA_DT_NEXT 0x40 /* RO */
166 #define ATI_REG_OUT_DMA_DT_CUR 0x44 /* RO */
167 #define ATI_REG_OUT_DMA_DT_SIZE 0x48
168
169 #define ATI_REG_SPDF_CMD 0x4c
170 #define ATI_REG_SPDF_CMD_LFSR (1U<<4)
171 #define ATI_REG_SPDF_CMD_SINGLE_CH (1U<<5)
172 #define ATI_REG_SPDF_CMD_LFSR_ACC (0xff<<8) /* RO */
173
174 #define ATI_REG_SPDF_DMA_LINKPTR 0x50
175 #define ATI_REG_SPDF_DMA_DT_START 0x54 /* RO */
176 #define ATI_REG_SPDF_DMA_DT_NEXT 0x58 /* RO */
177 #define ATI_REG_SPDF_DMA_DT_CUR 0x5c /* RO */
178 #define ATI_REG_SPDF_DMA_DT_SIZE 0x60
179
180 #define ATI_REG_MODEM_MIRROR 0x7c
181 #define ATI_REG_AUDIO_MIRROR 0x80
182
183 #define ATI_REG_6CH_REORDER 0x84 /* reorder slots for 6ch */
184 #define ATI_REG_6CH_REORDER_EN (1U<<0) /* 3,4,7,8,6,9 -> 3,4,6,9,7,8 */
185
186 #define ATI_REG_FIFO_FLUSH 0x88
187 #define ATI_REG_FIFO_OUT_FLUSH (1U<<0)
188 #define ATI_REG_FIFO_IN_FLUSH (1U<<1)
189
190 /* LINKPTR */
191 #define ATI_REG_LINKPTR_EN (1U<<0)
192
193 /* [INT|OUT|SPDIF]_DMA_DT_SIZE */
194 #define ATI_REG_DMA_DT_SIZE (0xffffU<<0)
195 #define ATI_REG_DMA_FIFO_USED (0x1fU<<16)
196 #define ATI_REG_DMA_FIFO_FREE (0x1fU<<21)
197 #define ATI_REG_DMA_STATE (7U<<26)
198
199
200 #define ATI_MAX_DESCRIPTORS 256 /* max number of descriptor packets */
201
202
203 struct atiixp;
204
205 /*
206 * DMA packate descriptor
207 */
208
209 struct atiixp_dma_desc {
210 u32 addr; /* DMA buffer address */
211 u16 status; /* status bits */
212 u16 size; /* size of the packet in dwords */
213 u32 next; /* address of the next packet descriptor */
214 };
215
216 /*
217 * stream enum
218 */
219 enum { ATI_DMA_PLAYBACK, ATI_DMA_CAPTURE, ATI_DMA_SPDIF, NUM_ATI_DMAS }; /* DMAs */
220 enum { ATI_PCM_OUT, ATI_PCM_IN, ATI_PCM_SPDIF, NUM_ATI_PCMS }; /* AC97 pcm slots */
221 enum { ATI_PCMDEV_ANALOG, ATI_PCMDEV_DIGITAL, NUM_ATI_PCMDEVS }; /* pcm devices */
222
223 #define NUM_ATI_CODECS 3
224
225
226 /*
227 * constants and callbacks for each DMA type
228 */
229 struct atiixp_dma_ops {
230 int type; /* ATI_DMA_XXX */
231 unsigned int llp_offset; /* LINKPTR offset */
232 unsigned int dt_cur; /* DT_CUR offset */
233 /* called from open callback */
234 void (*enable_dma)(struct atiixp *chip, int on);
235 /* called from trigger (START/STOP) */
236 void (*enable_transfer)(struct atiixp *chip, int on);
237 /* called from trigger (STOP only) */
238 void (*flush_dma)(struct atiixp *chip);
239 };
240
241 /*
242 * DMA stream
243 */
244 struct atiixp_dma {
245 const struct atiixp_dma_ops *ops;
246 struct snd_dma_buffer desc_buf;
247 struct snd_pcm_substream *substream; /* assigned PCM substream */
248 unsigned int buf_addr, buf_bytes; /* DMA buffer address, bytes */
249 unsigned int period_bytes, periods;
250 int opened;
251 int running;
252 int suspended;
253 int pcm_open_flag;
254 int ac97_pcm_type; /* index # of ac97_pcm to access, -1 = not used */
255 unsigned int saved_curptr;
256 };
257
258 /*
259 * ATI IXP chip
260 */
261 struct atiixp {
262 struct snd_card *card;
263 struct pci_dev *pci;
264
265 unsigned long addr;
266 void __iomem *remap_addr;
267 int irq;
268
269 struct snd_ac97_bus *ac97_bus;
270 struct snd_ac97 *ac97[NUM_ATI_CODECS];
271
272 spinlock_t reg_lock;
273
274 struct atiixp_dma dmas[NUM_ATI_DMAS];
275 struct ac97_pcm *pcms[NUM_ATI_PCMS];
276 struct snd_pcm *pcmdevs[NUM_ATI_PCMDEVS];
277
278 int max_channels; /* max. channels for PCM out */
279
280 unsigned int codec_not_ready_bits; /* for codec detection */
281
282 int spdif_over_aclink; /* passed from the module option */
283 struct mutex open_mutex; /* playback open mutex */
284 };
285
286
287 /*
288 */
289 static DEFINE_PCI_DEVICE_TABLE(snd_atiixp_ids) = {
290 { PCI_VDEVICE(ATI, 0x4341), 0 }, /* SB200 */
291 { PCI_VDEVICE(ATI, 0x4361), 0 }, /* SB300 */
292 { PCI_VDEVICE(ATI, 0x4370), 0 }, /* SB400 */
293 { PCI_VDEVICE(ATI, 0x4382), 0 }, /* SB600 */
294 { 0, }
295 };
296
297 MODULE_DEVICE_TABLE(pci, snd_atiixp_ids);
298
299 static struct snd_pci_quirk atiixp_quirks[] = {
300 SND_PCI_QUIRK(0x105b, 0x0c81, "Foxconn RC4107MA-RS2", 0),
301 SND_PCI_QUIRK(0x15bd, 0x3100, "DFI RS482", 0),
302 { } /* terminator */
303 };
304
305 /*
306 * lowlevel functions
307 */
308
309 /*
310 * update the bits of the given register.
311 * return 1 if the bits changed.
312 */
313 static int snd_atiixp_update_bits(struct atiixp *chip, unsigned int reg,
314 unsigned int mask, unsigned int value)
315 {
316 void __iomem *addr = chip->remap_addr + reg;
317 unsigned int data, old_data;
318 old_data = data = readl(addr);
319 data &= ~mask;
320 data |= value;
321 if (old_data == data)
322 return 0;
323 writel(data, addr);
324 return 1;
325 }
326
327 /*
328 * macros for easy use
329 */
330 #define atiixp_write(chip,reg,value) \
331 writel(value, chip->remap_addr + ATI_REG_##reg)
332 #define atiixp_read(chip,reg) \
333 readl(chip->remap_addr + ATI_REG_##reg)
334 #define atiixp_update(chip,reg,mask,val) \
335 snd_atiixp_update_bits(chip, ATI_REG_##reg, mask, val)
336
337 /*
338 * handling DMA packets
339 *
340 * we allocate a linear buffer for the DMA, and split it to each packet.
341 * in a future version, a scatter-gather buffer should be implemented.
342 */
343
344 #define ATI_DESC_LIST_SIZE \
345 PAGE_ALIGN(ATI_MAX_DESCRIPTORS * sizeof(struct atiixp_dma_desc))
346
347 /*
348 * build packets ring for the given buffer size.
349 *
350 * IXP handles the buffer descriptors, which are connected as a linked
351 * list. although we can change the list dynamically, in this version,
352 * a static RING of buffer descriptors is used.
353 *
354 * the ring is built in this function, and is set up to the hardware.
355 */
356 static int atiixp_build_dma_packets(struct atiixp *chip, struct atiixp_dma *dma,
357 struct snd_pcm_substream *substream,
358 unsigned int periods,
359 unsigned int period_bytes)
360 {
361 unsigned int i;
362 u32 addr, desc_addr;
363 unsigned long flags;
364
365 if (periods > ATI_MAX_DESCRIPTORS)
366 return -ENOMEM;
367
368 if (dma->desc_buf.area == NULL) {
369 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV,
370 snd_dma_pci_data(chip->pci),
371 ATI_DESC_LIST_SIZE,
372 &dma->desc_buf) < 0)
373 return -ENOMEM;
374 dma->period_bytes = dma->periods = 0; /* clear */
375 }
376
377 if (dma->periods == periods && dma->period_bytes == period_bytes)
378 return 0;
379
380 /* reset DMA before changing the descriptor table */
381 spin_lock_irqsave(&chip->reg_lock, flags);
382 writel(0, chip->remap_addr + dma->ops->llp_offset);
383 dma->ops->enable_dma(chip, 0);
384 dma->ops->enable_dma(chip, 1);
385 spin_unlock_irqrestore(&chip->reg_lock, flags);
386
387 /* fill the entries */
388 addr = (u32)substream->runtime->dma_addr;
389 desc_addr = (u32)dma->desc_buf.addr;
390 for (i = 0; i < periods; i++) {
391 struct atiixp_dma_desc *desc;
392 desc = &((struct atiixp_dma_desc *)dma->desc_buf.area)[i];
393 desc->addr = cpu_to_le32(addr);
394 desc->status = 0;
395 desc->size = period_bytes >> 2; /* in dwords */
396 desc_addr += sizeof(struct atiixp_dma_desc);
397 if (i == periods - 1)
398 desc->next = cpu_to_le32((u32)dma->desc_buf.addr);
399 else
400 desc->next = cpu_to_le32(desc_addr);
401 addr += period_bytes;
402 }
403
404 writel((u32)dma->desc_buf.addr | ATI_REG_LINKPTR_EN,
405 chip->remap_addr + dma->ops->llp_offset);
406
407 dma->period_bytes = period_bytes;
408 dma->periods = periods;
409
410 return 0;
411 }
412
413 /*
414 * remove the ring buffer and release it if assigned
415 */
416 static void atiixp_clear_dma_packets(struct atiixp *chip, struct atiixp_dma *dma,
417 struct snd_pcm_substream *substream)
418 {
419 if (dma->desc_buf.area) {
420 writel(0, chip->remap_addr + dma->ops->llp_offset);
421 snd_dma_free_pages(&dma->desc_buf);
422 dma->desc_buf.area = NULL;
423 }
424 }
425
426 /*
427 * AC97 interface
428 */
429 static int snd_atiixp_acquire_codec(struct atiixp *chip)
430 {
431 int timeout = 1000;
432
433 while (atiixp_read(chip, PHYS_OUT_ADDR) & ATI_REG_PHYS_OUT_ADDR_EN) {
434 if (! timeout--) {
435 dev_warn(chip->card->dev, "codec acquire timeout\n");
436 return -EBUSY;
437 }
438 udelay(1);
439 }
440 return 0;
441 }
442
443 static unsigned short snd_atiixp_codec_read(struct atiixp *chip, unsigned short codec, unsigned short reg)
444 {
445 unsigned int data;
446 int timeout;
447
448 if (snd_atiixp_acquire_codec(chip) < 0)
449 return 0xffff;
450 data = (reg << ATI_REG_PHYS_OUT_ADDR_SHIFT) |
451 ATI_REG_PHYS_OUT_ADDR_EN |
452 ATI_REG_PHYS_OUT_RW |
453 codec;
454 atiixp_write(chip, PHYS_OUT_ADDR, data);
455 if (snd_atiixp_acquire_codec(chip) < 0)
456 return 0xffff;
457 timeout = 1000;
458 do {
459 data = atiixp_read(chip, PHYS_IN_ADDR);
460 if (data & ATI_REG_PHYS_IN_READ_FLAG)
461 return data >> ATI_REG_PHYS_IN_DATA_SHIFT;
462 udelay(1);
463 } while (--timeout);
464 /* time out may happen during reset */
465 if (reg < 0x7c)
466 dev_warn(chip->card->dev, "codec read timeout (reg %x)\n", reg);
467 return 0xffff;
468 }
469
470
471 static void snd_atiixp_codec_write(struct atiixp *chip, unsigned short codec,
472 unsigned short reg, unsigned short val)
473 {
474 unsigned int data;
475
476 if (snd_atiixp_acquire_codec(chip) < 0)
477 return;
478 data = ((unsigned int)val << ATI_REG_PHYS_OUT_DATA_SHIFT) |
479 ((unsigned int)reg << ATI_REG_PHYS_OUT_ADDR_SHIFT) |
480 ATI_REG_PHYS_OUT_ADDR_EN | codec;
481 atiixp_write(chip, PHYS_OUT_ADDR, data);
482 }
483
484
485 static unsigned short snd_atiixp_ac97_read(struct snd_ac97 *ac97,
486 unsigned short reg)
487 {
488 struct atiixp *chip = ac97->private_data;
489 return snd_atiixp_codec_read(chip, ac97->num, reg);
490
491 }
492
493 static void snd_atiixp_ac97_write(struct snd_ac97 *ac97, unsigned short reg,
494 unsigned short val)
495 {
496 struct atiixp *chip = ac97->private_data;
497 snd_atiixp_codec_write(chip, ac97->num, reg, val);
498 }
499
500 /*
501 * reset AC link
502 */
503 static int snd_atiixp_aclink_reset(struct atiixp *chip)
504 {
505 int timeout;
506
507 /* reset powerdoewn */
508 if (atiixp_update(chip, CMD, ATI_REG_CMD_POWERDOWN, 0))
509 udelay(10);
510
511 /* perform a software reset */
512 atiixp_update(chip, CMD, ATI_REG_CMD_AC_SOFT_RESET, ATI_REG_CMD_AC_SOFT_RESET);
513 atiixp_read(chip, CMD);
514 udelay(10);
515 atiixp_update(chip, CMD, ATI_REG_CMD_AC_SOFT_RESET, 0);
516
517 timeout = 10;
518 while (! (atiixp_read(chip, CMD) & ATI_REG_CMD_ACLINK_ACTIVE)) {
519 /* do a hard reset */
520 atiixp_update(chip, CMD, ATI_REG_CMD_AC_SYNC|ATI_REG_CMD_AC_RESET,
521 ATI_REG_CMD_AC_SYNC);
522 atiixp_read(chip, CMD);
523 mdelay(1);
524 atiixp_update(chip, CMD, ATI_REG_CMD_AC_RESET, ATI_REG_CMD_AC_RESET);
525 if (!--timeout) {
526 dev_err(chip->card->dev, "codec reset timeout\n");
527 break;
528 }
529 }
530
531 /* deassert RESET and assert SYNC to make sure */
532 atiixp_update(chip, CMD, ATI_REG_CMD_AC_SYNC|ATI_REG_CMD_AC_RESET,
533 ATI_REG_CMD_AC_SYNC|ATI_REG_CMD_AC_RESET);
534
535 return 0;
536 }
537
538 #ifdef CONFIG_PM_SLEEP
539 static int snd_atiixp_aclink_down(struct atiixp *chip)
540 {
541 // if (atiixp_read(chip, MODEM_MIRROR) & 0x1) /* modem running, too? */
542 // return -EBUSY;
543 atiixp_update(chip, CMD,
544 ATI_REG_CMD_POWERDOWN | ATI_REG_CMD_AC_RESET,
545 ATI_REG_CMD_POWERDOWN);
546 return 0;
547 }
548 #endif
549
550 /*
551 * auto-detection of codecs
552 *
553 * the IXP chip can generate interrupts for the non-existing codecs.
554 * NEW_FRAME interrupt is used to make sure that the interrupt is generated
555 * even if all three codecs are connected.
556 */
557
558 #define ALL_CODEC_NOT_READY \
559 (ATI_REG_ISR_CODEC0_NOT_READY |\
560 ATI_REG_ISR_CODEC1_NOT_READY |\
561 ATI_REG_ISR_CODEC2_NOT_READY)
562 #define CODEC_CHECK_BITS (ALL_CODEC_NOT_READY|ATI_REG_ISR_NEW_FRAME)
563
564 static int ac97_probing_bugs(struct pci_dev *pci)
565 {
566 const struct snd_pci_quirk *q;
567
568 q = snd_pci_quirk_lookup(pci, atiixp_quirks);
569 if (q) {
570 dev_dbg(&pci->dev, "atiixp quirk for %s. Forcing codec %d\n",
571 snd_pci_quirk_name(q), q->value);
572 return q->value;
573 }
574 /* this hardware doesn't need workarounds. Probe for codec */
575 return -1;
576 }
577
578 static int snd_atiixp_codec_detect(struct atiixp *chip)
579 {
580 int timeout;
581
582 chip->codec_not_ready_bits = 0;
583 if (ac97_codec == -1)
584 ac97_codec = ac97_probing_bugs(chip->pci);
585 if (ac97_codec >= 0) {
586 chip->codec_not_ready_bits |=
587 CODEC_CHECK_BITS ^ (1 << (ac97_codec + 10));
588 return 0;
589 }
590
591 atiixp_write(chip, IER, CODEC_CHECK_BITS);
592 /* wait for the interrupts */
593 timeout = 50;
594 while (timeout-- > 0) {
595 mdelay(1);
596 if (chip->codec_not_ready_bits)
597 break;
598 }
599 atiixp_write(chip, IER, 0); /* disable irqs */
600
601 if ((chip->codec_not_ready_bits & ALL_CODEC_NOT_READY) == ALL_CODEC_NOT_READY) {
602 dev_err(chip->card->dev, "no codec detected!\n");
603 return -ENXIO;
604 }
605 return 0;
606 }
607
608
609 /*
610 * enable DMA and irqs
611 */
612 static int snd_atiixp_chip_start(struct atiixp *chip)
613 {
614 unsigned int reg;
615
616 /* set up spdif, enable burst mode */
617 reg = atiixp_read(chip, CMD);
618 reg |= 0x02 << ATI_REG_CMD_SPDF_THRESHOLD_SHIFT;
619 reg |= ATI_REG_CMD_BURST_EN;
620 atiixp_write(chip, CMD, reg);
621
622 reg = atiixp_read(chip, SPDF_CMD);
623 reg &= ~(ATI_REG_SPDF_CMD_LFSR|ATI_REG_SPDF_CMD_SINGLE_CH);
624 atiixp_write(chip, SPDF_CMD, reg);
625
626 /* clear all interrupt source */
627 atiixp_write(chip, ISR, 0xffffffff);
628 /* enable irqs */
629 atiixp_write(chip, IER,
630 ATI_REG_IER_IO_STATUS_EN |
631 ATI_REG_IER_IN_XRUN_EN |
632 ATI_REG_IER_OUT_XRUN_EN |
633 ATI_REG_IER_SPDF_XRUN_EN |
634 ATI_REG_IER_SPDF_STATUS_EN);
635 return 0;
636 }
637
638
639 /*
640 * disable DMA and IRQs
641 */
642 static int snd_atiixp_chip_stop(struct atiixp *chip)
643 {
644 /* clear interrupt source */
645 atiixp_write(chip, ISR, atiixp_read(chip, ISR));
646 /* disable irqs */
647 atiixp_write(chip, IER, 0);
648 return 0;
649 }
650
651
652 /*
653 * PCM section
654 */
655
656 /*
657 * pointer callback simplly reads XXX_DMA_DT_CUR register as the current
658 * position. when SG-buffer is implemented, the offset must be calculated
659 * correctly...
660 */
661 static snd_pcm_uframes_t snd_atiixp_pcm_pointer(struct snd_pcm_substream *substream)
662 {
663 struct atiixp *chip = snd_pcm_substream_chip(substream);
664 struct snd_pcm_runtime *runtime = substream->runtime;
665 struct atiixp_dma *dma = runtime->private_data;
666 unsigned int curptr;
667 int timeout = 1000;
668
669 while (timeout--) {
670 curptr = readl(chip->remap_addr + dma->ops->dt_cur);
671 if (curptr < dma->buf_addr)
672 continue;
673 curptr -= dma->buf_addr;
674 if (curptr >= dma->buf_bytes)
675 continue;
676 return bytes_to_frames(runtime, curptr);
677 }
678 dev_dbg(chip->card->dev, "invalid DMA pointer read 0x%x (buf=%x)\n",
679 readl(chip->remap_addr + dma->ops->dt_cur), dma->buf_addr);
680 return 0;
681 }
682
683 /*
684 * XRUN detected, and stop the PCM substream
685 */
686 static void snd_atiixp_xrun_dma(struct atiixp *chip, struct atiixp_dma *dma)
687 {
688 if (! dma->substream || ! dma->running)
689 return;
690 dev_dbg(chip->card->dev, "XRUN detected (DMA %d)\n", dma->ops->type);
691 snd_pcm_stream_lock(dma->substream);
692 snd_pcm_stop(dma->substream, SNDRV_PCM_STATE_XRUN);
693 snd_pcm_stream_unlock(dma->substream);
694 }
695
696 /*
697 * the period ack. update the substream.
698 */
699 static void snd_atiixp_update_dma(struct atiixp *chip, struct atiixp_dma *dma)
700 {
701 if (! dma->substream || ! dma->running)
702 return;
703 snd_pcm_period_elapsed(dma->substream);
704 }
705
706 /* set BUS_BUSY interrupt bit if any DMA is running */
707 /* call with spinlock held */
708 static void snd_atiixp_check_bus_busy(struct atiixp *chip)
709 {
710 unsigned int bus_busy;
711 if (atiixp_read(chip, CMD) & (ATI_REG_CMD_SEND_EN |
712 ATI_REG_CMD_RECEIVE_EN |
713 ATI_REG_CMD_SPDF_OUT_EN))
714 bus_busy = ATI_REG_IER_SET_BUS_BUSY;
715 else
716 bus_busy = 0;
717 atiixp_update(chip, IER, ATI_REG_IER_SET_BUS_BUSY, bus_busy);
718 }
719
720 /* common trigger callback
721 * calling the lowlevel callbacks in it
722 */
723 static int snd_atiixp_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
724 {
725 struct atiixp *chip = snd_pcm_substream_chip(substream);
726 struct atiixp_dma *dma = substream->runtime->private_data;
727 int err = 0;
728
729 if (snd_BUG_ON(!dma->ops->enable_transfer ||
730 !dma->ops->flush_dma))
731 return -EINVAL;
732
733 spin_lock(&chip->reg_lock);
734 switch (cmd) {
735 case SNDRV_PCM_TRIGGER_START:
736 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
737 case SNDRV_PCM_TRIGGER_RESUME:
738 dma->ops->enable_transfer(chip, 1);
739 dma->running = 1;
740 dma->suspended = 0;
741 break;
742 case SNDRV_PCM_TRIGGER_STOP:
743 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
744 case SNDRV_PCM_TRIGGER_SUSPEND:
745 dma->ops->enable_transfer(chip, 0);
746 dma->running = 0;
747 dma->suspended = cmd == SNDRV_PCM_TRIGGER_SUSPEND;
748 break;
749 default:
750 err = -EINVAL;
751 break;
752 }
753 if (! err) {
754 snd_atiixp_check_bus_busy(chip);
755 if (cmd == SNDRV_PCM_TRIGGER_STOP) {
756 dma->ops->flush_dma(chip);
757 snd_atiixp_check_bus_busy(chip);
758 }
759 }
760 spin_unlock(&chip->reg_lock);
761 return err;
762 }
763
764
765 /*
766 * lowlevel callbacks for each DMA type
767 *
768 * every callback is supposed to be called in chip->reg_lock spinlock
769 */
770
771 /* flush FIFO of analog OUT DMA */
772 static void atiixp_out_flush_dma(struct atiixp *chip)
773 {
774 atiixp_write(chip, FIFO_FLUSH, ATI_REG_FIFO_OUT_FLUSH);
775 }
776
777 /* enable/disable analog OUT DMA */
778 static void atiixp_out_enable_dma(struct atiixp *chip, int on)
779 {
780 unsigned int data;
781 data = atiixp_read(chip, CMD);
782 if (on) {
783 if (data & ATI_REG_CMD_OUT_DMA_EN)
784 return;
785 atiixp_out_flush_dma(chip);
786 data |= ATI_REG_CMD_OUT_DMA_EN;
787 } else
788 data &= ~ATI_REG_CMD_OUT_DMA_EN;
789 atiixp_write(chip, CMD, data);
790 }
791
792 /* start/stop transfer over OUT DMA */
793 static void atiixp_out_enable_transfer(struct atiixp *chip, int on)
794 {
795 atiixp_update(chip, CMD, ATI_REG_CMD_SEND_EN,
796 on ? ATI_REG_CMD_SEND_EN : 0);
797 }
798
799 /* enable/disable analog IN DMA */
800 static void atiixp_in_enable_dma(struct atiixp *chip, int on)
801 {
802 atiixp_update(chip, CMD, ATI_REG_CMD_IN_DMA_EN,
803 on ? ATI_REG_CMD_IN_DMA_EN : 0);
804 }
805
806 /* start/stop analog IN DMA */
807 static void atiixp_in_enable_transfer(struct atiixp *chip, int on)
808 {
809 if (on) {
810 unsigned int data = atiixp_read(chip, CMD);
811 if (! (data & ATI_REG_CMD_RECEIVE_EN)) {
812 data |= ATI_REG_CMD_RECEIVE_EN;
813 #if 0 /* FIXME: this causes the endless loop */
814 /* wait until slot 3/4 are finished */
815 while ((atiixp_read(chip, COUNTER) &
816 ATI_REG_COUNTER_SLOT) != 5)
817 ;
818 #endif
819 atiixp_write(chip, CMD, data);
820 }
821 } else
822 atiixp_update(chip, CMD, ATI_REG_CMD_RECEIVE_EN, 0);
823 }
824
825 /* flush FIFO of analog IN DMA */
826 static void atiixp_in_flush_dma(struct atiixp *chip)
827 {
828 atiixp_write(chip, FIFO_FLUSH, ATI_REG_FIFO_IN_FLUSH);
829 }
830
831 /* enable/disable SPDIF OUT DMA */
832 static void atiixp_spdif_enable_dma(struct atiixp *chip, int on)
833 {
834 atiixp_update(chip, CMD, ATI_REG_CMD_SPDF_DMA_EN,
835 on ? ATI_REG_CMD_SPDF_DMA_EN : 0);
836 }
837
838 /* start/stop SPDIF OUT DMA */
839 static void atiixp_spdif_enable_transfer(struct atiixp *chip, int on)
840 {
841 unsigned int data;
842 data = atiixp_read(chip, CMD);
843 if (on)
844 data |= ATI_REG_CMD_SPDF_OUT_EN;
845 else
846 data &= ~ATI_REG_CMD_SPDF_OUT_EN;
847 atiixp_write(chip, CMD, data);
848 }
849
850 /* flush FIFO of SPDIF OUT DMA */
851 static void atiixp_spdif_flush_dma(struct atiixp *chip)
852 {
853 int timeout;
854
855 /* DMA off, transfer on */
856 atiixp_spdif_enable_dma(chip, 0);
857 atiixp_spdif_enable_transfer(chip, 1);
858
859 timeout = 100;
860 do {
861 if (! (atiixp_read(chip, SPDF_DMA_DT_SIZE) & ATI_REG_DMA_FIFO_USED))
862 break;
863 udelay(1);
864 } while (timeout-- > 0);
865
866 atiixp_spdif_enable_transfer(chip, 0);
867 }
868
869 /* set up slots and formats for SPDIF OUT */
870 static int snd_atiixp_spdif_prepare(struct snd_pcm_substream *substream)
871 {
872 struct atiixp *chip = snd_pcm_substream_chip(substream);
873
874 spin_lock_irq(&chip->reg_lock);
875 if (chip->spdif_over_aclink) {
876 unsigned int data;
877 /* enable slots 10/11 */
878 atiixp_update(chip, CMD, ATI_REG_CMD_SPDF_CONFIG_MASK,
879 ATI_REG_CMD_SPDF_CONFIG_01);
880 data = atiixp_read(chip, OUT_DMA_SLOT) & ~ATI_REG_OUT_DMA_SLOT_MASK;
881 data |= ATI_REG_OUT_DMA_SLOT_BIT(10) |
882 ATI_REG_OUT_DMA_SLOT_BIT(11);
883 data |= 0x04 << ATI_REG_OUT_DMA_THRESHOLD_SHIFT;
884 atiixp_write(chip, OUT_DMA_SLOT, data);
885 atiixp_update(chip, CMD, ATI_REG_CMD_INTERLEAVE_OUT,
886 substream->runtime->format == SNDRV_PCM_FORMAT_S16_LE ?
887 ATI_REG_CMD_INTERLEAVE_OUT : 0);
888 } else {
889 atiixp_update(chip, CMD, ATI_REG_CMD_SPDF_CONFIG_MASK, 0);
890 atiixp_update(chip, CMD, ATI_REG_CMD_INTERLEAVE_SPDF, 0);
891 }
892 spin_unlock_irq(&chip->reg_lock);
893 return 0;
894 }
895
896 /* set up slots and formats for analog OUT */
897 static int snd_atiixp_playback_prepare(struct snd_pcm_substream *substream)
898 {
899 struct atiixp *chip = snd_pcm_substream_chip(substream);
900 unsigned int data;
901
902 spin_lock_irq(&chip->reg_lock);
903 data = atiixp_read(chip, OUT_DMA_SLOT) & ~ATI_REG_OUT_DMA_SLOT_MASK;
904 switch (substream->runtime->channels) {
905 case 8:
906 data |= ATI_REG_OUT_DMA_SLOT_BIT(10) |
907 ATI_REG_OUT_DMA_SLOT_BIT(11);
908 /* fallthru */
909 case 6:
910 data |= ATI_REG_OUT_DMA_SLOT_BIT(7) |
911 ATI_REG_OUT_DMA_SLOT_BIT(8);
912 /* fallthru */
913 case 4:
914 data |= ATI_REG_OUT_DMA_SLOT_BIT(6) |
915 ATI_REG_OUT_DMA_SLOT_BIT(9);
916 /* fallthru */
917 default:
918 data |= ATI_REG_OUT_DMA_SLOT_BIT(3) |
919 ATI_REG_OUT_DMA_SLOT_BIT(4);
920 break;
921 }
922
923 /* set output threshold */
924 data |= 0x04 << ATI_REG_OUT_DMA_THRESHOLD_SHIFT;
925 atiixp_write(chip, OUT_DMA_SLOT, data);
926
927 atiixp_update(chip, CMD, ATI_REG_CMD_INTERLEAVE_OUT,
928 substream->runtime->format == SNDRV_PCM_FORMAT_S16_LE ?
929 ATI_REG_CMD_INTERLEAVE_OUT : 0);
930
931 /*
932 * enable 6 channel re-ordering bit if needed
933 */
934 atiixp_update(chip, 6CH_REORDER, ATI_REG_6CH_REORDER_EN,
935 substream->runtime->channels >= 6 ? ATI_REG_6CH_REORDER_EN: 0);
936
937 spin_unlock_irq(&chip->reg_lock);
938 return 0;
939 }
940
941 /* set up slots and formats for analog IN */
942 static int snd_atiixp_capture_prepare(struct snd_pcm_substream *substream)
943 {
944 struct atiixp *chip = snd_pcm_substream_chip(substream);
945
946 spin_lock_irq(&chip->reg_lock);
947 atiixp_update(chip, CMD, ATI_REG_CMD_INTERLEAVE_IN,
948 substream->runtime->format == SNDRV_PCM_FORMAT_S16_LE ?
949 ATI_REG_CMD_INTERLEAVE_IN : 0);
950 spin_unlock_irq(&chip->reg_lock);
951 return 0;
952 }
953
954 /*
955 * hw_params - allocate the buffer and set up buffer descriptors
956 */
957 static int snd_atiixp_pcm_hw_params(struct snd_pcm_substream *substream,
958 struct snd_pcm_hw_params *hw_params)
959 {
960 struct atiixp *chip = snd_pcm_substream_chip(substream);
961 struct atiixp_dma *dma = substream->runtime->private_data;
962 int err;
963
964 err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
965 if (err < 0)
966 return err;
967 dma->buf_addr = substream->runtime->dma_addr;
968 dma->buf_bytes = params_buffer_bytes(hw_params);
969
970 err = atiixp_build_dma_packets(chip, dma, substream,
971 params_periods(hw_params),
972 params_period_bytes(hw_params));
973 if (err < 0)
974 return err;
975
976 if (dma->ac97_pcm_type >= 0) {
977 struct ac97_pcm *pcm = chip->pcms[dma->ac97_pcm_type];
978 /* PCM is bound to AC97 codec(s)
979 * set up the AC97 codecs
980 */
981 if (dma->pcm_open_flag) {
982 snd_ac97_pcm_close(pcm);
983 dma->pcm_open_flag = 0;
984 }
985 err = snd_ac97_pcm_open(pcm, params_rate(hw_params),
986 params_channels(hw_params),
987 pcm->r[0].slots);
988 if (err >= 0)
989 dma->pcm_open_flag = 1;
990 }
991
992 return err;
993 }
994
995 static int snd_atiixp_pcm_hw_free(struct snd_pcm_substream *substream)
996 {
997 struct atiixp *chip = snd_pcm_substream_chip(substream);
998 struct atiixp_dma *dma = substream->runtime->private_data;
999
1000 if (dma->pcm_open_flag) {
1001 struct ac97_pcm *pcm = chip->pcms[dma->ac97_pcm_type];
1002 snd_ac97_pcm_close(pcm);
1003 dma->pcm_open_flag = 0;
1004 }
1005 atiixp_clear_dma_packets(chip, dma, substream);
1006 snd_pcm_lib_free_pages(substream);
1007 return 0;
1008 }
1009
1010
1011 /*
1012 * pcm hardware definition, identical for all DMA types
1013 */
1014 static struct snd_pcm_hardware snd_atiixp_pcm_hw =
1015 {
1016 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1017 SNDRV_PCM_INFO_BLOCK_TRANSFER |
1018 SNDRV_PCM_INFO_PAUSE |
1019 SNDRV_PCM_INFO_RESUME |
1020 SNDRV_PCM_INFO_MMAP_VALID),
1021 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE,
1022 .rates = SNDRV_PCM_RATE_48000,
1023 .rate_min = 48000,
1024 .rate_max = 48000,
1025 .channels_min = 2,
1026 .channels_max = 2,
1027 .buffer_bytes_max = 256 * 1024,
1028 .period_bytes_min = 32,
1029 .period_bytes_max = 128 * 1024,
1030 .periods_min = 2,
1031 .periods_max = ATI_MAX_DESCRIPTORS,
1032 };
1033
1034 static int snd_atiixp_pcm_open(struct snd_pcm_substream *substream,
1035 struct atiixp_dma *dma, int pcm_type)
1036 {
1037 struct atiixp *chip = snd_pcm_substream_chip(substream);
1038 struct snd_pcm_runtime *runtime = substream->runtime;
1039 int err;
1040
1041 if (snd_BUG_ON(!dma->ops || !dma->ops->enable_dma))
1042 return -EINVAL;
1043
1044 if (dma->opened)
1045 return -EBUSY;
1046 dma->substream = substream;
1047 runtime->hw = snd_atiixp_pcm_hw;
1048 dma->ac97_pcm_type = pcm_type;
1049 if (pcm_type >= 0) {
1050 runtime->hw.rates = chip->pcms[pcm_type]->rates;
1051 snd_pcm_limit_hw_rates(runtime);
1052 } else {
1053 /* direct SPDIF */
1054 runtime->hw.formats = SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE;
1055 }
1056 if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
1057 return err;
1058 runtime->private_data = dma;
1059
1060 /* enable DMA bits */
1061 spin_lock_irq(&chip->reg_lock);
1062 dma->ops->enable_dma(chip, 1);
1063 spin_unlock_irq(&chip->reg_lock);
1064 dma->opened = 1;
1065
1066 return 0;
1067 }
1068
1069 static int snd_atiixp_pcm_close(struct snd_pcm_substream *substream,
1070 struct atiixp_dma *dma)
1071 {
1072 struct atiixp *chip = snd_pcm_substream_chip(substream);
1073 /* disable DMA bits */
1074 if (snd_BUG_ON(!dma->ops || !dma->ops->enable_dma))
1075 return -EINVAL;
1076 spin_lock_irq(&chip->reg_lock);
1077 dma->ops->enable_dma(chip, 0);
1078 spin_unlock_irq(&chip->reg_lock);
1079 dma->substream = NULL;
1080 dma->opened = 0;
1081 return 0;
1082 }
1083
1084 /*
1085 */
1086 static int snd_atiixp_playback_open(struct snd_pcm_substream *substream)
1087 {
1088 struct atiixp *chip = snd_pcm_substream_chip(substream);
1089 int err;
1090
1091 mutex_lock(&chip->open_mutex);
1092 err = snd_atiixp_pcm_open(substream, &chip->dmas[ATI_DMA_PLAYBACK], 0);
1093 mutex_unlock(&chip->open_mutex);
1094 if (err < 0)
1095 return err;
1096 substream->runtime->hw.channels_max = chip->max_channels;
1097 if (chip->max_channels > 2)
1098 /* channels must be even */
1099 snd_pcm_hw_constraint_step(substream->runtime, 0,
1100 SNDRV_PCM_HW_PARAM_CHANNELS, 2);
1101 return 0;
1102 }
1103
1104 static int snd_atiixp_playback_close(struct snd_pcm_substream *substream)
1105 {
1106 struct atiixp *chip = snd_pcm_substream_chip(substream);
1107 int err;
1108 mutex_lock(&chip->open_mutex);
1109 err = snd_atiixp_pcm_close(substream, &chip->dmas[ATI_DMA_PLAYBACK]);
1110 mutex_unlock(&chip->open_mutex);
1111 return err;
1112 }
1113
1114 static int snd_atiixp_capture_open(struct snd_pcm_substream *substream)
1115 {
1116 struct atiixp *chip = snd_pcm_substream_chip(substream);
1117 return snd_atiixp_pcm_open(substream, &chip->dmas[ATI_DMA_CAPTURE], 1);
1118 }
1119
1120 static int snd_atiixp_capture_close(struct snd_pcm_substream *substream)
1121 {
1122 struct atiixp *chip = snd_pcm_substream_chip(substream);
1123 return snd_atiixp_pcm_close(substream, &chip->dmas[ATI_DMA_CAPTURE]);
1124 }
1125
1126 static int snd_atiixp_spdif_open(struct snd_pcm_substream *substream)
1127 {
1128 struct atiixp *chip = snd_pcm_substream_chip(substream);
1129 int err;
1130 mutex_lock(&chip->open_mutex);
1131 if (chip->spdif_over_aclink) /* share DMA_PLAYBACK */
1132 err = snd_atiixp_pcm_open(substream, &chip->dmas[ATI_DMA_PLAYBACK], 2);
1133 else
1134 err = snd_atiixp_pcm_open(substream, &chip->dmas[ATI_DMA_SPDIF], -1);
1135 mutex_unlock(&chip->open_mutex);
1136 return err;
1137 }
1138
1139 static int snd_atiixp_spdif_close(struct snd_pcm_substream *substream)
1140 {
1141 struct atiixp *chip = snd_pcm_substream_chip(substream);
1142 int err;
1143 mutex_lock(&chip->open_mutex);
1144 if (chip->spdif_over_aclink)
1145 err = snd_atiixp_pcm_close(substream, &chip->dmas[ATI_DMA_PLAYBACK]);
1146 else
1147 err = snd_atiixp_pcm_close(substream, &chip->dmas[ATI_DMA_SPDIF]);
1148 mutex_unlock(&chip->open_mutex);
1149 return err;
1150 }
1151
1152 /* AC97 playback */
1153 static struct snd_pcm_ops snd_atiixp_playback_ops = {
1154 .open = snd_atiixp_playback_open,
1155 .close = snd_atiixp_playback_close,
1156 .ioctl = snd_pcm_lib_ioctl,
1157 .hw_params = snd_atiixp_pcm_hw_params,
1158 .hw_free = snd_atiixp_pcm_hw_free,
1159 .prepare = snd_atiixp_playback_prepare,
1160 .trigger = snd_atiixp_pcm_trigger,
1161 .pointer = snd_atiixp_pcm_pointer,
1162 };
1163
1164 /* AC97 capture */
1165 static struct snd_pcm_ops snd_atiixp_capture_ops = {
1166 .open = snd_atiixp_capture_open,
1167 .close = snd_atiixp_capture_close,
1168 .ioctl = snd_pcm_lib_ioctl,
1169 .hw_params = snd_atiixp_pcm_hw_params,
1170 .hw_free = snd_atiixp_pcm_hw_free,
1171 .prepare = snd_atiixp_capture_prepare,
1172 .trigger = snd_atiixp_pcm_trigger,
1173 .pointer = snd_atiixp_pcm_pointer,
1174 };
1175
1176 /* SPDIF playback */
1177 static struct snd_pcm_ops snd_atiixp_spdif_ops = {
1178 .open = snd_atiixp_spdif_open,
1179 .close = snd_atiixp_spdif_close,
1180 .ioctl = snd_pcm_lib_ioctl,
1181 .hw_params = snd_atiixp_pcm_hw_params,
1182 .hw_free = snd_atiixp_pcm_hw_free,
1183 .prepare = snd_atiixp_spdif_prepare,
1184 .trigger = snd_atiixp_pcm_trigger,
1185 .pointer = snd_atiixp_pcm_pointer,
1186 };
1187
1188 static struct ac97_pcm atiixp_pcm_defs[] = {
1189 /* front PCM */
1190 {
1191 .exclusive = 1,
1192 .r = { {
1193 .slots = (1 << AC97_SLOT_PCM_LEFT) |
1194 (1 << AC97_SLOT_PCM_RIGHT) |
1195 (1 << AC97_SLOT_PCM_CENTER) |
1196 (1 << AC97_SLOT_PCM_SLEFT) |
1197 (1 << AC97_SLOT_PCM_SRIGHT) |
1198 (1 << AC97_SLOT_LFE)
1199 }
1200 }
1201 },
1202 /* PCM IN #1 */
1203 {
1204 .stream = 1,
1205 .exclusive = 1,
1206 .r = { {
1207 .slots = (1 << AC97_SLOT_PCM_LEFT) |
1208 (1 << AC97_SLOT_PCM_RIGHT)
1209 }
1210 }
1211 },
1212 /* S/PDIF OUT (optional) */
1213 {
1214 .exclusive = 1,
1215 .spdif = 1,
1216 .r = { {
1217 .slots = (1 << AC97_SLOT_SPDIF_LEFT2) |
1218 (1 << AC97_SLOT_SPDIF_RIGHT2)
1219 }
1220 }
1221 },
1222 };
1223
1224 static struct atiixp_dma_ops snd_atiixp_playback_dma_ops = {
1225 .type = ATI_DMA_PLAYBACK,
1226 .llp_offset = ATI_REG_OUT_DMA_LINKPTR,
1227 .dt_cur = ATI_REG_OUT_DMA_DT_CUR,
1228 .enable_dma = atiixp_out_enable_dma,
1229 .enable_transfer = atiixp_out_enable_transfer,
1230 .flush_dma = atiixp_out_flush_dma,
1231 };
1232
1233 static struct atiixp_dma_ops snd_atiixp_capture_dma_ops = {
1234 .type = ATI_DMA_CAPTURE,
1235 .llp_offset = ATI_REG_IN_DMA_LINKPTR,
1236 .dt_cur = ATI_REG_IN_DMA_DT_CUR,
1237 .enable_dma = atiixp_in_enable_dma,
1238 .enable_transfer = atiixp_in_enable_transfer,
1239 .flush_dma = atiixp_in_flush_dma,
1240 };
1241
1242 static struct atiixp_dma_ops snd_atiixp_spdif_dma_ops = {
1243 .type = ATI_DMA_SPDIF,
1244 .llp_offset = ATI_REG_SPDF_DMA_LINKPTR,
1245 .dt_cur = ATI_REG_SPDF_DMA_DT_CUR,
1246 .enable_dma = atiixp_spdif_enable_dma,
1247 .enable_transfer = atiixp_spdif_enable_transfer,
1248 .flush_dma = atiixp_spdif_flush_dma,
1249 };
1250
1251
1252 static int snd_atiixp_pcm_new(struct atiixp *chip)
1253 {
1254 struct snd_pcm *pcm;
1255 struct snd_pcm_chmap *chmap;
1256 struct snd_ac97_bus *pbus = chip->ac97_bus;
1257 int err, i, num_pcms;
1258
1259 /* initialize constants */
1260 chip->dmas[ATI_DMA_PLAYBACK].ops = &snd_atiixp_playback_dma_ops;
1261 chip->dmas[ATI_DMA_CAPTURE].ops = &snd_atiixp_capture_dma_ops;
1262 if (! chip->spdif_over_aclink)
1263 chip->dmas[ATI_DMA_SPDIF].ops = &snd_atiixp_spdif_dma_ops;
1264
1265 /* assign AC97 pcm */
1266 if (chip->spdif_over_aclink)
1267 num_pcms = 3;
1268 else
1269 num_pcms = 2;
1270 err = snd_ac97_pcm_assign(pbus, num_pcms, atiixp_pcm_defs);
1271 if (err < 0)
1272 return err;
1273 for (i = 0; i < num_pcms; i++)
1274 chip->pcms[i] = &pbus->pcms[i];
1275
1276 chip->max_channels = 2;
1277 if (pbus->pcms[ATI_PCM_OUT].r[0].slots & (1 << AC97_SLOT_PCM_SLEFT)) {
1278 if (pbus->pcms[ATI_PCM_OUT].r[0].slots & (1 << AC97_SLOT_LFE))
1279 chip->max_channels = 6;
1280 else
1281 chip->max_channels = 4;
1282 }
1283
1284 /* PCM #0: analog I/O */
1285 err = snd_pcm_new(chip->card, "ATI IXP AC97",
1286 ATI_PCMDEV_ANALOG, 1, 1, &pcm);
1287 if (err < 0)
1288 return err;
1289 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_atiixp_playback_ops);
1290 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_atiixp_capture_ops);
1291 pcm->private_data = chip;
1292 strcpy(pcm->name, "ATI IXP AC97");
1293 chip->pcmdevs[ATI_PCMDEV_ANALOG] = pcm;
1294
1295 snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1296 snd_dma_pci_data(chip->pci),
1297 64*1024, 128*1024);
1298
1299 err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK,
1300 snd_pcm_alt_chmaps, chip->max_channels, 0,
1301 &chmap);
1302 if (err < 0)
1303 return err;
1304 chmap->channel_mask = SND_PCM_CHMAP_MASK_2468;
1305 chip->ac97[0]->chmaps[SNDRV_PCM_STREAM_PLAYBACK] = chmap;
1306
1307 /* no SPDIF support on codec? */
1308 if (chip->pcms[ATI_PCM_SPDIF] && ! chip->pcms[ATI_PCM_SPDIF]->rates)
1309 return 0;
1310
1311 /* FIXME: non-48k sample rate doesn't work on my test machine with AD1888 */
1312 if (chip->pcms[ATI_PCM_SPDIF])
1313 chip->pcms[ATI_PCM_SPDIF]->rates = SNDRV_PCM_RATE_48000;
1314
1315 /* PCM #1: spdif playback */
1316 err = snd_pcm_new(chip->card, "ATI IXP IEC958",
1317 ATI_PCMDEV_DIGITAL, 1, 0, &pcm);
1318 if (err < 0)
1319 return err;
1320 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_atiixp_spdif_ops);
1321 pcm->private_data = chip;
1322 if (chip->spdif_over_aclink)
1323 strcpy(pcm->name, "ATI IXP IEC958 (AC97)");
1324 else
1325 strcpy(pcm->name, "ATI IXP IEC958 (Direct)");
1326 chip->pcmdevs[ATI_PCMDEV_DIGITAL] = pcm;
1327
1328 snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1329 snd_dma_pci_data(chip->pci),
1330 64*1024, 128*1024);
1331
1332 /* pre-select AC97 SPDIF slots 10/11 */
1333 for (i = 0; i < NUM_ATI_CODECS; i++) {
1334 if (chip->ac97[i])
1335 snd_ac97_update_bits(chip->ac97[i],
1336 AC97_EXTENDED_STATUS,
1337 0x03 << 4, 0x03 << 4);
1338 }
1339
1340 return 0;
1341 }
1342
1343
1344
1345 /*
1346 * interrupt handler
1347 */
1348 static irqreturn_t snd_atiixp_interrupt(int irq, void *dev_id)
1349 {
1350 struct atiixp *chip = dev_id;
1351 unsigned int status;
1352
1353 status = atiixp_read(chip, ISR);
1354
1355 if (! status)
1356 return IRQ_NONE;
1357
1358 /* process audio DMA */
1359 if (status & ATI_REG_ISR_OUT_XRUN)
1360 snd_atiixp_xrun_dma(chip, &chip->dmas[ATI_DMA_PLAYBACK]);
1361 else if (status & ATI_REG_ISR_OUT_STATUS)
1362 snd_atiixp_update_dma(chip, &chip->dmas[ATI_DMA_PLAYBACK]);
1363 if (status & ATI_REG_ISR_IN_XRUN)
1364 snd_atiixp_xrun_dma(chip, &chip->dmas[ATI_DMA_CAPTURE]);
1365 else if (status & ATI_REG_ISR_IN_STATUS)
1366 snd_atiixp_update_dma(chip, &chip->dmas[ATI_DMA_CAPTURE]);
1367 if (! chip->spdif_over_aclink) {
1368 if (status & ATI_REG_ISR_SPDF_XRUN)
1369 snd_atiixp_xrun_dma(chip, &chip->dmas[ATI_DMA_SPDIF]);
1370 else if (status & ATI_REG_ISR_SPDF_STATUS)
1371 snd_atiixp_update_dma(chip, &chip->dmas[ATI_DMA_SPDIF]);
1372 }
1373
1374 /* for codec detection */
1375 if (status & CODEC_CHECK_BITS) {
1376 unsigned int detected;
1377 detected = status & CODEC_CHECK_BITS;
1378 spin_lock(&chip->reg_lock);
1379 chip->codec_not_ready_bits |= detected;
1380 atiixp_update(chip, IER, detected, 0); /* disable the detected irqs */
1381 spin_unlock(&chip->reg_lock);
1382 }
1383
1384 /* ack */
1385 atiixp_write(chip, ISR, status);
1386
1387 return IRQ_HANDLED;
1388 }
1389
1390
1391 /*
1392 * ac97 mixer section
1393 */
1394
1395 static struct ac97_quirk ac97_quirks[] = {
1396 {
1397 .subvendor = 0x103c,
1398 .subdevice = 0x006b,
1399 .name = "HP Pavilion ZV5030US",
1400 .type = AC97_TUNE_MUTE_LED
1401 },
1402 {
1403 .subvendor = 0x103c,
1404 .subdevice = 0x308b,
1405 .name = "HP nx6125",
1406 .type = AC97_TUNE_MUTE_LED
1407 },
1408 {
1409 .subvendor = 0x103c,
1410 .subdevice = 0x3091,
1411 .name = "unknown HP",
1412 .type = AC97_TUNE_MUTE_LED
1413 },
1414 { } /* terminator */
1415 };
1416
1417 static int snd_atiixp_mixer_new(struct atiixp *chip, int clock,
1418 const char *quirk_override)
1419 {
1420 struct snd_ac97_bus *pbus;
1421 struct snd_ac97_template ac97;
1422 int i, err;
1423 int codec_count;
1424 static struct snd_ac97_bus_ops ops = {
1425 .write = snd_atiixp_ac97_write,
1426 .read = snd_atiixp_ac97_read,
1427 };
1428 static unsigned int codec_skip[NUM_ATI_CODECS] = {
1429 ATI_REG_ISR_CODEC0_NOT_READY,
1430 ATI_REG_ISR_CODEC1_NOT_READY,
1431 ATI_REG_ISR_CODEC2_NOT_READY,
1432 };
1433
1434 if (snd_atiixp_codec_detect(chip) < 0)
1435 return -ENXIO;
1436
1437 if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &pbus)) < 0)
1438 return err;
1439 pbus->clock = clock;
1440 chip->ac97_bus = pbus;
1441
1442 codec_count = 0;
1443 for (i = 0; i < NUM_ATI_CODECS; i++) {
1444 if (chip->codec_not_ready_bits & codec_skip[i])
1445 continue;
1446 memset(&ac97, 0, sizeof(ac97));
1447 ac97.private_data = chip;
1448 ac97.pci = chip->pci;
1449 ac97.num = i;
1450 ac97.scaps = AC97_SCAP_SKIP_MODEM | AC97_SCAP_POWER_SAVE;
1451 if (! chip->spdif_over_aclink)
1452 ac97.scaps |= AC97_SCAP_NO_SPDIF;
1453 if ((err = snd_ac97_mixer(pbus, &ac97, &chip->ac97[i])) < 0) {
1454 chip->ac97[i] = NULL; /* to be sure */
1455 dev_dbg(chip->card->dev,
1456 "codec %d not available for audio\n", i);
1457 continue;
1458 }
1459 codec_count++;
1460 }
1461
1462 if (! codec_count) {
1463 dev_err(chip->card->dev, "no codec available\n");
1464 return -ENODEV;
1465 }
1466
1467 snd_ac97_tune_hardware(chip->ac97[0], ac97_quirks, quirk_override);
1468
1469 return 0;
1470 }
1471
1472
1473 #ifdef CONFIG_PM_SLEEP
1474 /*
1475 * power management
1476 */
1477 static int snd_atiixp_suspend(struct device *dev)
1478 {
1479 struct pci_dev *pci = to_pci_dev(dev);
1480 struct snd_card *card = dev_get_drvdata(dev);
1481 struct atiixp *chip = card->private_data;
1482 int i;
1483
1484 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
1485 for (i = 0; i < NUM_ATI_PCMDEVS; i++)
1486 if (chip->pcmdevs[i]) {
1487 struct atiixp_dma *dma = &chip->dmas[i];
1488 if (dma->substream && dma->running)
1489 dma->saved_curptr = readl(chip->remap_addr +
1490 dma->ops->dt_cur);
1491 snd_pcm_suspend_all(chip->pcmdevs[i]);
1492 }
1493 for (i = 0; i < NUM_ATI_CODECS; i++)
1494 snd_ac97_suspend(chip->ac97[i]);
1495 snd_atiixp_aclink_down(chip);
1496 snd_atiixp_chip_stop(chip);
1497
1498 pci_disable_device(pci);
1499 pci_save_state(pci);
1500 pci_set_power_state(pci, PCI_D3hot);
1501 return 0;
1502 }
1503
1504 static int snd_atiixp_resume(struct device *dev)
1505 {
1506 struct pci_dev *pci = to_pci_dev(dev);
1507 struct snd_card *card = dev_get_drvdata(dev);
1508 struct atiixp *chip = card->private_data;
1509 int i;
1510
1511 pci_set_power_state(pci, PCI_D0);
1512 pci_restore_state(pci);
1513 if (pci_enable_device(pci) < 0) {
1514 dev_err(dev, "pci_enable_device failed, disabling device\n");
1515 snd_card_disconnect(card);
1516 return -EIO;
1517 }
1518 pci_set_master(pci);
1519
1520 snd_atiixp_aclink_reset(chip);
1521 snd_atiixp_chip_start(chip);
1522
1523 for (i = 0; i < NUM_ATI_CODECS; i++)
1524 snd_ac97_resume(chip->ac97[i]);
1525
1526 for (i = 0; i < NUM_ATI_PCMDEVS; i++)
1527 if (chip->pcmdevs[i]) {
1528 struct atiixp_dma *dma = &chip->dmas[i];
1529 if (dma->substream && dma->suspended) {
1530 dma->ops->enable_dma(chip, 1);
1531 dma->substream->ops->prepare(dma->substream);
1532 writel((u32)dma->desc_buf.addr | ATI_REG_LINKPTR_EN,
1533 chip->remap_addr + dma->ops->llp_offset);
1534 writel(dma->saved_curptr, chip->remap_addr +
1535 dma->ops->dt_cur);
1536 }
1537 }
1538
1539 snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1540 return 0;
1541 }
1542
1543 static SIMPLE_DEV_PM_OPS(snd_atiixp_pm, snd_atiixp_suspend, snd_atiixp_resume);
1544 #define SND_ATIIXP_PM_OPS &snd_atiixp_pm
1545 #else
1546 #define SND_ATIIXP_PM_OPS NULL
1547 #endif /* CONFIG_PM_SLEEP */
1548
1549
1550 #ifdef CONFIG_PROC_FS
1551 /*
1552 * proc interface for register dump
1553 */
1554
1555 static void snd_atiixp_proc_read(struct snd_info_entry *entry,
1556 struct snd_info_buffer *buffer)
1557 {
1558 struct atiixp *chip = entry->private_data;
1559 int i;
1560
1561 for (i = 0; i < 256; i += 4)
1562 snd_iprintf(buffer, "%02x: %08x\n", i, readl(chip->remap_addr + i));
1563 }
1564
1565 static void snd_atiixp_proc_init(struct atiixp *chip)
1566 {
1567 struct snd_info_entry *entry;
1568
1569 if (! snd_card_proc_new(chip->card, "atiixp", &entry))
1570 snd_info_set_text_ops(entry, chip, snd_atiixp_proc_read);
1571 }
1572 #else /* !CONFIG_PROC_FS */
1573 #define snd_atiixp_proc_init(chip)
1574 #endif
1575
1576
1577 /*
1578 * destructor
1579 */
1580
1581 static int snd_atiixp_free(struct atiixp *chip)
1582 {
1583 if (chip->irq < 0)
1584 goto __hw_end;
1585 snd_atiixp_chip_stop(chip);
1586
1587 __hw_end:
1588 if (chip->irq >= 0)
1589 free_irq(chip->irq, chip);
1590 if (chip->remap_addr)
1591 iounmap(chip->remap_addr);
1592 pci_release_regions(chip->pci);
1593 pci_disable_device(chip->pci);
1594 kfree(chip);
1595 return 0;
1596 }
1597
1598 static int snd_atiixp_dev_free(struct snd_device *device)
1599 {
1600 struct atiixp *chip = device->device_data;
1601 return snd_atiixp_free(chip);
1602 }
1603
1604 /*
1605 * constructor for chip instance
1606 */
1607 static int snd_atiixp_create(struct snd_card *card,
1608 struct pci_dev *pci,
1609 struct atiixp **r_chip)
1610 {
1611 static struct snd_device_ops ops = {
1612 .dev_free = snd_atiixp_dev_free,
1613 };
1614 struct atiixp *chip;
1615 int err;
1616
1617 if ((err = pci_enable_device(pci)) < 0)
1618 return err;
1619
1620 chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1621 if (chip == NULL) {
1622 pci_disable_device(pci);
1623 return -ENOMEM;
1624 }
1625
1626 spin_lock_init(&chip->reg_lock);
1627 mutex_init(&chip->open_mutex);
1628 chip->card = card;
1629 chip->pci = pci;
1630 chip->irq = -1;
1631 if ((err = pci_request_regions(pci, "ATI IXP AC97")) < 0) {
1632 pci_disable_device(pci);
1633 kfree(chip);
1634 return err;
1635 }
1636 chip->addr = pci_resource_start(pci, 0);
1637 chip->remap_addr = pci_ioremap_bar(pci, 0);
1638 if (chip->remap_addr == NULL) {
1639 dev_err(card->dev, "AC'97 space ioremap problem\n");
1640 snd_atiixp_free(chip);
1641 return -EIO;
1642 }
1643
1644 if (request_irq(pci->irq, snd_atiixp_interrupt, IRQF_SHARED,
1645 KBUILD_MODNAME, chip)) {
1646 dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
1647 snd_atiixp_free(chip);
1648 return -EBUSY;
1649 }
1650 chip->irq = pci->irq;
1651 pci_set_master(pci);
1652 synchronize_irq(chip->irq);
1653
1654 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1655 snd_atiixp_free(chip);
1656 return err;
1657 }
1658
1659 *r_chip = chip;
1660 return 0;
1661 }
1662
1663
1664 static int snd_atiixp_probe(struct pci_dev *pci,
1665 const struct pci_device_id *pci_id)
1666 {
1667 struct snd_card *card;
1668 struct atiixp *chip;
1669 int err;
1670
1671 err = snd_card_new(&pci->dev, index, id, THIS_MODULE, 0, &card);
1672 if (err < 0)
1673 return err;
1674
1675 strcpy(card->driver, spdif_aclink ? "ATIIXP" : "ATIIXP-SPDMA");
1676 strcpy(card->shortname, "ATI IXP");
1677 if ((err = snd_atiixp_create(card, pci, &chip)) < 0)
1678 goto __error;
1679 card->private_data = chip;
1680
1681 if ((err = snd_atiixp_aclink_reset(chip)) < 0)
1682 goto __error;
1683
1684 chip->spdif_over_aclink = spdif_aclink;
1685
1686 if ((err = snd_atiixp_mixer_new(chip, ac97_clock, ac97_quirk)) < 0)
1687 goto __error;
1688
1689 if ((err = snd_atiixp_pcm_new(chip)) < 0)
1690 goto __error;
1691
1692 snd_atiixp_proc_init(chip);
1693
1694 snd_atiixp_chip_start(chip);
1695
1696 snprintf(card->longname, sizeof(card->longname),
1697 "%s rev %x with %s at %#lx, irq %i", card->shortname,
1698 pci->revision,
1699 chip->ac97[0] ? snd_ac97_get_short_name(chip->ac97[0]) : "?",
1700 chip->addr, chip->irq);
1701
1702 if ((err = snd_card_register(card)) < 0)
1703 goto __error;
1704
1705 pci_set_drvdata(pci, card);
1706 return 0;
1707
1708 __error:
1709 snd_card_free(card);
1710 return err;
1711 }
1712
1713 static void snd_atiixp_remove(struct pci_dev *pci)
1714 {
1715 snd_card_free(pci_get_drvdata(pci));
1716 }
1717
1718 static struct pci_driver atiixp_driver = {
1719 .name = KBUILD_MODNAME,
1720 .id_table = snd_atiixp_ids,
1721 .probe = snd_atiixp_probe,
1722 .remove = snd_atiixp_remove,
1723 .driver = {
1724 .pm = SND_ATIIXP_PM_OPS,
1725 },
1726 };
1727
1728 module_pci_driver(atiixp_driver);
Linux kernel - Deliverables
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