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Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus
[linux-2.6/mini2440.git] / sound / pci / atiixp.c
blobd6752dff2a443df67a8b9cd3fa5a913e6dc7b68c
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/moduleparam.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 int 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 int 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 struct pci_device_id 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[] __devinitdata = {
300 SND_PCI_QUIRK(0x15bd, 0x3100, "DFI RS482", 0),
301 { } /* terminator */
302 };
303
304 /*
305 * lowlevel functions
306 */
307
308 /*
309 * update the bits of the given register.
310 * return 1 if the bits changed.
311 */
312 static int snd_atiixp_update_bits(struct atiixp *chip, unsigned int reg,
313 unsigned int mask, unsigned int value)
314 {
315 void __iomem *addr = chip->remap_addr + reg;
316 unsigned int data, old_data;
317 old_data = data = readl(addr);
318 data &= ~mask;
319 data |= value;
320 if (old_data == data)
321 return 0;
322 writel(data, addr);
323 return 1;
324 }
325
326 /*
327 * macros for easy use
328 */
329 #define atiixp_write(chip,reg,value) \
330 writel(value, chip->remap_addr + ATI_REG_##reg)
331 #define atiixp_read(chip,reg) \
332 readl(chip->remap_addr + ATI_REG_##reg)
333 #define atiixp_update(chip,reg,mask,val) \
334 snd_atiixp_update_bits(chip, ATI_REG_##reg, mask, val)
335
336 /*
337 * handling DMA packets
338 *
339 * we allocate a linear buffer for the DMA, and split it to each packet.
340 * in a future version, a scatter-gather buffer should be implemented.
341 */
342
343 #define ATI_DESC_LIST_SIZE \
344 PAGE_ALIGN(ATI_MAX_DESCRIPTORS * sizeof(struct atiixp_dma_desc))
345
346 /*
347 * build packets ring for the given buffer size.
348 *
349 * IXP handles the buffer descriptors, which are connected as a linked
350 * list. although we can change the list dynamically, in this version,
351 * a static RING of buffer descriptors is used.
352 *
353 * the ring is built in this function, and is set up to the hardware.
354 */
355 static int atiixp_build_dma_packets(struct atiixp *chip, struct atiixp_dma *dma,
356 struct snd_pcm_substream *substream,
357 unsigned int periods,
358 unsigned int period_bytes)
359 {
360 unsigned int i;
361 u32 addr, desc_addr;
362 unsigned long flags;
363
364 if (periods > ATI_MAX_DESCRIPTORS)
365 return -ENOMEM;
366
367 if (dma->desc_buf.area == NULL) {
368 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV,
369 snd_dma_pci_data(chip->pci),
370 ATI_DESC_LIST_SIZE,
371 &dma->desc_buf) < 0)
372 return -ENOMEM;
373 dma->period_bytes = dma->periods = 0; /* clear */
374 }
375
376 if (dma->periods == periods && dma->period_bytes == period_bytes)
377 return 0;
378
379 /* reset DMA before changing the descriptor table */
380 spin_lock_irqsave(&chip->reg_lock, flags);
381 writel(0, chip->remap_addr + dma->ops->llp_offset);
382 dma->ops->enable_dma(chip, 0);
383 dma->ops->enable_dma(chip, 1);
384 spin_unlock_irqrestore(&chip->reg_lock, flags);
385
386 /* fill the entries */
387 addr = (u32)substream->runtime->dma_addr;
388 desc_addr = (u32)dma->desc_buf.addr;
389 for (i = 0; i < periods; i++) {
390 struct atiixp_dma_desc *desc;
391 desc = &((struct atiixp_dma_desc *)dma->desc_buf.area)[i];
392 desc->addr = cpu_to_le32(addr);
393 desc->status = 0;
394 desc->size = period_bytes >> 2; /* in dwords */
395 desc_addr += sizeof(struct atiixp_dma_desc);
396 if (i == periods - 1)
397 desc->next = cpu_to_le32((u32)dma->desc_buf.addr);
398 else
399 desc->next = cpu_to_le32(desc_addr);
400 addr += period_bytes;
401 }
402
403 writel((u32)dma->desc_buf.addr | ATI_REG_LINKPTR_EN,
404 chip->remap_addr + dma->ops->llp_offset);
405
406 dma->period_bytes = period_bytes;
407 dma->periods = periods;
408
409 return 0;
410 }
411
412 /*
413 * remove the ring buffer and release it if assigned
414 */
415 static void atiixp_clear_dma_packets(struct atiixp *chip, struct atiixp_dma *dma,
416 struct snd_pcm_substream *substream)
417 {
418 if (dma->desc_buf.area) {
419 writel(0, chip->remap_addr + dma->ops->llp_offset);
420 snd_dma_free_pages(&dma->desc_buf);
421 dma->desc_buf.area = NULL;
422 }
423 }
424
425 /*
426 * AC97 interface
427 */
428 static int snd_atiixp_acquire_codec(struct atiixp *chip)
429 {
430 int timeout = 1000;
431
432 while (atiixp_read(chip, PHYS_OUT_ADDR) & ATI_REG_PHYS_OUT_ADDR_EN) {
433 if (! timeout--) {
434 snd_printk(KERN_WARNING "atiixp: codec acquire timeout\n");
435 return -EBUSY;
436 }
437 udelay(1);
438 }
439 return 0;
440 }
441
442 static unsigned short snd_atiixp_codec_read(struct atiixp *chip, unsigned short codec, unsigned short reg)
443 {
444 unsigned int data;
445 int timeout;
446
447 if (snd_atiixp_acquire_codec(chip) < 0)
448 return 0xffff;
449 data = (reg << ATI_REG_PHYS_OUT_ADDR_SHIFT) |
450 ATI_REG_PHYS_OUT_ADDR_EN |
451 ATI_REG_PHYS_OUT_RW |
452 codec;
453 atiixp_write(chip, PHYS_OUT_ADDR, data);
454 if (snd_atiixp_acquire_codec(chip) < 0)
455 return 0xffff;
456 timeout = 1000;
457 do {
458 data = atiixp_read(chip, PHYS_IN_ADDR);
459 if (data & ATI_REG_PHYS_IN_READ_FLAG)
460 return data >> ATI_REG_PHYS_IN_DATA_SHIFT;
461 udelay(1);
462 } while (--timeout);
463 /* time out may happen during reset */
464 if (reg < 0x7c)
465 snd_printk(KERN_WARNING "atiixp: codec read timeout (reg %x)\n", reg);
466 return 0xffff;
467 }
468
469
470 static void snd_atiixp_codec_write(struct atiixp *chip, unsigned short codec,
471 unsigned short reg, unsigned short val)
472 {
473 unsigned int data;
474
475 if (snd_atiixp_acquire_codec(chip) < 0)
476 return;
477 data = ((unsigned int)val << ATI_REG_PHYS_OUT_DATA_SHIFT) |
478 ((unsigned int)reg << ATI_REG_PHYS_OUT_ADDR_SHIFT) |
479 ATI_REG_PHYS_OUT_ADDR_EN | codec;
480 atiixp_write(chip, PHYS_OUT_ADDR, data);
481 }
482
483
484 static unsigned short snd_atiixp_ac97_read(struct snd_ac97 *ac97,
485 unsigned short reg)
486 {
487 struct atiixp *chip = ac97->private_data;
488 return snd_atiixp_codec_read(chip, ac97->num, reg);
489
490 }
491
492 static void snd_atiixp_ac97_write(struct snd_ac97 *ac97, unsigned short reg,
493 unsigned short val)
494 {
495 struct atiixp *chip = ac97->private_data;
496 snd_atiixp_codec_write(chip, ac97->num, reg, val);
497 }
498
499 /*
500 * reset AC link
501 */
502 static int snd_atiixp_aclink_reset(struct atiixp *chip)
503 {
504 int timeout;
505
506 /* reset powerdoewn */
507 if (atiixp_update(chip, CMD, ATI_REG_CMD_POWERDOWN, 0))
508 udelay(10);
509
510 /* perform a software reset */
511 atiixp_update(chip, CMD, ATI_REG_CMD_AC_SOFT_RESET, ATI_REG_CMD_AC_SOFT_RESET);
512 atiixp_read(chip, CMD);
513 udelay(10);
514 atiixp_update(chip, CMD, ATI_REG_CMD_AC_SOFT_RESET, 0);
515
516 timeout = 10;
517 while (! (atiixp_read(chip, CMD) & ATI_REG_CMD_ACLINK_ACTIVE)) {
518 /* do a hard reset */
519 atiixp_update(chip, CMD, ATI_REG_CMD_AC_SYNC|ATI_REG_CMD_AC_RESET,
520 ATI_REG_CMD_AC_SYNC);
521 atiixp_read(chip, CMD);
522 mdelay(1);
523 atiixp_update(chip, CMD, ATI_REG_CMD_AC_RESET, ATI_REG_CMD_AC_RESET);
524 if (--timeout) {
525 snd_printk(KERN_ERR "atiixp: codec reset timeout\n");
526 break;
527 }
528 }
529
530 /* deassert RESET and assert SYNC to make sure */
531 atiixp_update(chip, CMD, ATI_REG_CMD_AC_SYNC|ATI_REG_CMD_AC_RESET,
532 ATI_REG_CMD_AC_SYNC|ATI_REG_CMD_AC_RESET);
533
534 return 0;
535 }
536
537 #ifdef CONFIG_PM
538 static int snd_atiixp_aclink_down(struct atiixp *chip)
539 {
540 // if (atiixp_read(chip, MODEM_MIRROR) & 0x1) /* modem running, too? */
541 // return -EBUSY;
542 atiixp_update(chip, CMD,
543 ATI_REG_CMD_POWERDOWN | ATI_REG_CMD_AC_RESET,
544 ATI_REG_CMD_POWERDOWN);
545 return 0;
546 }
547 #endif
548
549 /*
550 * auto-detection of codecs
551 *
552 * the IXP chip can generate interrupts for the non-existing codecs.
553 * NEW_FRAME interrupt is used to make sure that the interrupt is generated
554 * even if all three codecs are connected.
555 */
556
557 #define ALL_CODEC_NOT_READY \
558 (ATI_REG_ISR_CODEC0_NOT_READY |\
559 ATI_REG_ISR_CODEC1_NOT_READY |\
560 ATI_REG_ISR_CODEC2_NOT_READY)
561 #define CODEC_CHECK_BITS (ALL_CODEC_NOT_READY|ATI_REG_ISR_NEW_FRAME)
562
563 static int __devinit ac97_probing_bugs(struct pci_dev *pci)
564 {
565 const struct snd_pci_quirk *q;
566
567 q = snd_pci_quirk_lookup(pci, atiixp_quirks);
568 if (q) {
569 snd_printdd(KERN_INFO "Atiixp quirk for %s. "
570 "Forcing codec %d\n", q->name, q->value);
571 return q->value;
572 }
573 /* this hardware doesn't need workarounds. Probe for codec */
574 return -1;
575 }
576
577 static int __devinit snd_atiixp_codec_detect(struct atiixp *chip)
578 {
579 int timeout;
580
581 chip->codec_not_ready_bits = 0;
582 if (ac97_codec == -1)
583 ac97_codec = ac97_probing_bugs(chip->pci);
584 if (ac97_codec >= 0) {
585 chip->codec_not_ready_bits |=
586 CODEC_CHECK_BITS ^ (1 << (ac97_codec + 10));
587 return 0;
588 }
589
590 atiixp_write(chip, IER, CODEC_CHECK_BITS);
591 /* wait for the interrupts */
592 timeout = 50;
593 while (timeout-- > 0) {
594 mdelay(1);
595 if (chip->codec_not_ready_bits)
596 break;
597 }
598 atiixp_write(chip, IER, 0); /* disable irqs */
599
600 if ((chip->codec_not_ready_bits & ALL_CODEC_NOT_READY) == ALL_CODEC_NOT_READY) {
601 snd_printk(KERN_ERR "atiixp: no codec detected!\n");
602 return -ENXIO;
603 }
604 return 0;
605 }
606
607
608 /*
609 * enable DMA and irqs
610 */
611 static int snd_atiixp_chip_start(struct atiixp *chip)
612 {
613 unsigned int reg;
614
615 /* set up spdif, enable burst mode */
616 reg = atiixp_read(chip, CMD);
617 reg |= 0x02 << ATI_REG_CMD_SPDF_THRESHOLD_SHIFT;
618 reg |= ATI_REG_CMD_BURST_EN;
619 atiixp_write(chip, CMD, reg);
620
621 reg = atiixp_read(chip, SPDF_CMD);
622 reg &= ~(ATI_REG_SPDF_CMD_LFSR|ATI_REG_SPDF_CMD_SINGLE_CH);
623 atiixp_write(chip, SPDF_CMD, reg);
624
625 /* clear all interrupt source */
626 atiixp_write(chip, ISR, 0xffffffff);
627 /* enable irqs */
628 atiixp_write(chip, IER,
629 ATI_REG_IER_IO_STATUS_EN |
630 ATI_REG_IER_IN_XRUN_EN |
631 ATI_REG_IER_OUT_XRUN_EN |
632 ATI_REG_IER_SPDF_XRUN_EN |
633 ATI_REG_IER_SPDF_STATUS_EN);
634 return 0;
635 }
636
637
638 /*
639 * disable DMA and IRQs
640 */
641 static int snd_atiixp_chip_stop(struct atiixp *chip)
642 {
643 /* clear interrupt source */
644 atiixp_write(chip, ISR, atiixp_read(chip, ISR));
645 /* disable irqs */
646 atiixp_write(chip, IER, 0);
647 return 0;
648 }
649
650
651 /*
652 * PCM section
653 */
654
655 /*
656 * pointer callback simplly reads XXX_DMA_DT_CUR register as the current
657 * position. when SG-buffer is implemented, the offset must be calculated
658 * correctly...
659 */
660 static snd_pcm_uframes_t snd_atiixp_pcm_pointer(struct snd_pcm_substream *substream)
661 {
662 struct atiixp *chip = snd_pcm_substream_chip(substream);
663 struct snd_pcm_runtime *runtime = substream->runtime;
664 struct atiixp_dma *dma = runtime->private_data;
665 unsigned int curptr;
666 int timeout = 1000;
667
668 while (timeout--) {
669 curptr = readl(chip->remap_addr + dma->ops->dt_cur);
670 if (curptr < dma->buf_addr)
671 continue;
672 curptr -= dma->buf_addr;
673 if (curptr >= dma->buf_bytes)
674 continue;
675 return bytes_to_frames(runtime, curptr);
676 }
677 snd_printd("atiixp: invalid DMA pointer read 0x%x (buf=%x)\n",
678 readl(chip->remap_addr + dma->ops->dt_cur), dma->buf_addr);
679 return 0;
680 }
681
682 /*
683 * XRUN detected, and stop the PCM substream
684 */
685 static void snd_atiixp_xrun_dma(struct atiixp *chip, struct atiixp_dma *dma)
686 {
687 if (! dma->substream || ! dma->running)
688 return;
689 snd_printdd("atiixp: XRUN detected (DMA %d)\n", dma->ops->type);
690 snd_pcm_stop(dma->substream, SNDRV_PCM_STATE_XRUN);
691 }
692
693 /*
694 * the period ack. update the substream.
695 */
696 static void snd_atiixp_update_dma(struct atiixp *chip, struct atiixp_dma *dma)
697 {
698 if (! dma->substream || ! dma->running)
699 return;
700 snd_pcm_period_elapsed(dma->substream);
701 }
702
703 /* set BUS_BUSY interrupt bit if any DMA is running */
704 /* call with spinlock held */
705 static void snd_atiixp_check_bus_busy(struct atiixp *chip)
706 {
707 unsigned int bus_busy;
708 if (atiixp_read(chip, CMD) & (ATI_REG_CMD_SEND_EN |
709 ATI_REG_CMD_RECEIVE_EN |
710 ATI_REG_CMD_SPDF_OUT_EN))
711 bus_busy = ATI_REG_IER_SET_BUS_BUSY;
712 else
713 bus_busy = 0;
714 atiixp_update(chip, IER, ATI_REG_IER_SET_BUS_BUSY, bus_busy);
715 }
716
717 /* common trigger callback
718 * calling the lowlevel callbacks in it
719 */
720 static int snd_atiixp_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
721 {
722 struct atiixp *chip = snd_pcm_substream_chip(substream);
723 struct atiixp_dma *dma = substream->runtime->private_data;
724 int err = 0;
725
726 if (snd_BUG_ON(!dma->ops->enable_transfer ||
727 !dma->ops->flush_dma))
728 return -EINVAL;
729
730 spin_lock(&chip->reg_lock);
731 switch (cmd) {
732 case SNDRV_PCM_TRIGGER_START:
733 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
734 case SNDRV_PCM_TRIGGER_RESUME:
735 dma->ops->enable_transfer(chip, 1);
736 dma->running = 1;
737 dma->suspended = 0;
738 break;
739 case SNDRV_PCM_TRIGGER_STOP:
740 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
741 case SNDRV_PCM_TRIGGER_SUSPEND:
742 dma->ops->enable_transfer(chip, 0);
743 dma->running = 0;
744 dma->suspended = cmd == SNDRV_PCM_TRIGGER_SUSPEND;
745 break;
746 default:
747 err = -EINVAL;
748 break;
749 }
750 if (! err) {
751 snd_atiixp_check_bus_busy(chip);
752 if (cmd == SNDRV_PCM_TRIGGER_STOP) {
753 dma->ops->flush_dma(chip);
754 snd_atiixp_check_bus_busy(chip);
755 }
756 }
757 spin_unlock(&chip->reg_lock);
758 return err;
759 }
760
761
762 /*
763 * lowlevel callbacks for each DMA type
764 *
765 * every callback is supposed to be called in chip->reg_lock spinlock
766 */
767
768 /* flush FIFO of analog OUT DMA */
769 static void atiixp_out_flush_dma(struct atiixp *chip)
770 {
771 atiixp_write(chip, FIFO_FLUSH, ATI_REG_FIFO_OUT_FLUSH);
772 }
773
774 /* enable/disable analog OUT DMA */
775 static void atiixp_out_enable_dma(struct atiixp *chip, int on)
776 {
777 unsigned int data;
778 data = atiixp_read(chip, CMD);
779 if (on) {
780 if (data & ATI_REG_CMD_OUT_DMA_EN)
781 return;
782 atiixp_out_flush_dma(chip);
783 data |= ATI_REG_CMD_OUT_DMA_EN;
784 } else
785 data &= ~ATI_REG_CMD_OUT_DMA_EN;
786 atiixp_write(chip, CMD, data);
787 }
788
789 /* start/stop transfer over OUT DMA */
790 static void atiixp_out_enable_transfer(struct atiixp *chip, int on)
791 {
792 atiixp_update(chip, CMD, ATI_REG_CMD_SEND_EN,
793 on ? ATI_REG_CMD_SEND_EN : 0);
794 }
795
796 /* enable/disable analog IN DMA */
797 static void atiixp_in_enable_dma(struct atiixp *chip, int on)
798 {
799 atiixp_update(chip, CMD, ATI_REG_CMD_IN_DMA_EN,
800 on ? ATI_REG_CMD_IN_DMA_EN : 0);
801 }
802
803 /* start/stop analog IN DMA */
804 static void atiixp_in_enable_transfer(struct atiixp *chip, int on)
805 {
806 if (on) {
807 unsigned int data = atiixp_read(chip, CMD);
808 if (! (data & ATI_REG_CMD_RECEIVE_EN)) {
809 data |= ATI_REG_CMD_RECEIVE_EN;
810 #if 0 /* FIXME: this causes the endless loop */
811 /* wait until slot 3/4 are finished */
812 while ((atiixp_read(chip, COUNTER) &
813 ATI_REG_COUNTER_SLOT) != 5)
814 ;
815 #endif
816 atiixp_write(chip, CMD, data);
817 }
818 } else
819 atiixp_update(chip, CMD, ATI_REG_CMD_RECEIVE_EN, 0);
820 }
821
822 /* flush FIFO of analog IN DMA */
823 static void atiixp_in_flush_dma(struct atiixp *chip)
824 {
825 atiixp_write(chip, FIFO_FLUSH, ATI_REG_FIFO_IN_FLUSH);
826 }
827
828 /* enable/disable SPDIF OUT DMA */
829 static void atiixp_spdif_enable_dma(struct atiixp *chip, int on)
830 {
831 atiixp_update(chip, CMD, ATI_REG_CMD_SPDF_DMA_EN,
832 on ? ATI_REG_CMD_SPDF_DMA_EN : 0);
833 }
834
835 /* start/stop SPDIF OUT DMA */
836 static void atiixp_spdif_enable_transfer(struct atiixp *chip, int on)
837 {
838 unsigned int data;
839 data = atiixp_read(chip, CMD);
840 if (on)
841 data |= ATI_REG_CMD_SPDF_OUT_EN;
842 else
843 data &= ~ATI_REG_CMD_SPDF_OUT_EN;
844 atiixp_write(chip, CMD, data);
845 }
846
847 /* flush FIFO of SPDIF OUT DMA */
848 static void atiixp_spdif_flush_dma(struct atiixp *chip)
849 {
850 int timeout;
851
852 /* DMA off, transfer on */
853 atiixp_spdif_enable_dma(chip, 0);
854 atiixp_spdif_enable_transfer(chip, 1);
855
856 timeout = 100;
857 do {
858 if (! (atiixp_read(chip, SPDF_DMA_DT_SIZE) & ATI_REG_DMA_FIFO_USED))
859 break;
860 udelay(1);
861 } while (timeout-- > 0);
862
863 atiixp_spdif_enable_transfer(chip, 0);
864 }
865
866 /* set up slots and formats for SPDIF OUT */
867 static int snd_atiixp_spdif_prepare(struct snd_pcm_substream *substream)
868 {
869 struct atiixp *chip = snd_pcm_substream_chip(substream);
870
871 spin_lock_irq(&chip->reg_lock);
872 if (chip->spdif_over_aclink) {
873 unsigned int data;
874 /* enable slots 10/11 */
875 atiixp_update(chip, CMD, ATI_REG_CMD_SPDF_CONFIG_MASK,
876 ATI_REG_CMD_SPDF_CONFIG_01);
877 data = atiixp_read(chip, OUT_DMA_SLOT) & ~ATI_REG_OUT_DMA_SLOT_MASK;
878 data |= ATI_REG_OUT_DMA_SLOT_BIT(10) |
879 ATI_REG_OUT_DMA_SLOT_BIT(11);
880 data |= 0x04 << ATI_REG_OUT_DMA_THRESHOLD_SHIFT;
881 atiixp_write(chip, OUT_DMA_SLOT, data);
882 atiixp_update(chip, CMD, ATI_REG_CMD_INTERLEAVE_OUT,
883 substream->runtime->format == SNDRV_PCM_FORMAT_S16_LE ?
884 ATI_REG_CMD_INTERLEAVE_OUT : 0);
885 } else {
886 atiixp_update(chip, CMD, ATI_REG_CMD_SPDF_CONFIG_MASK, 0);
887 atiixp_update(chip, CMD, ATI_REG_CMD_INTERLEAVE_SPDF, 0);
888 }
889 spin_unlock_irq(&chip->reg_lock);
890 return 0;
891 }
892
893 /* set up slots and formats for analog OUT */
894 static int snd_atiixp_playback_prepare(struct snd_pcm_substream *substream)
895 {
896 struct atiixp *chip = snd_pcm_substream_chip(substream);
897 unsigned int data;
898
899 spin_lock_irq(&chip->reg_lock);
900 data = atiixp_read(chip, OUT_DMA_SLOT) & ~ATI_REG_OUT_DMA_SLOT_MASK;
901 switch (substream->runtime->channels) {
902 case 8:
903 data |= ATI_REG_OUT_DMA_SLOT_BIT(10) |
904 ATI_REG_OUT_DMA_SLOT_BIT(11);
905 /* fallthru */
906 case 6:
907 data |= ATI_REG_OUT_DMA_SLOT_BIT(7) |
908 ATI_REG_OUT_DMA_SLOT_BIT(8);
909 /* fallthru */
910 case 4:
911 data |= ATI_REG_OUT_DMA_SLOT_BIT(6) |
912 ATI_REG_OUT_DMA_SLOT_BIT(9);
913 /* fallthru */
914 default:
915 data |= ATI_REG_OUT_DMA_SLOT_BIT(3) |
916 ATI_REG_OUT_DMA_SLOT_BIT(4);
917 break;
918 }
919
920 /* set output threshold */
921 data |= 0x04 << ATI_REG_OUT_DMA_THRESHOLD_SHIFT;
922 atiixp_write(chip, OUT_DMA_SLOT, data);
923
924 atiixp_update(chip, CMD, ATI_REG_CMD_INTERLEAVE_OUT,
925 substream->runtime->format == SNDRV_PCM_FORMAT_S16_LE ?
926 ATI_REG_CMD_INTERLEAVE_OUT : 0);
927
928 /*
929 * enable 6 channel re-ordering bit if needed
930 */
931 atiixp_update(chip, 6CH_REORDER, ATI_REG_6CH_REORDER_EN,
932 substream->runtime->channels >= 6 ? ATI_REG_6CH_REORDER_EN: 0);
933
934 spin_unlock_irq(&chip->reg_lock);
935 return 0;
936 }
937
938 /* set up slots and formats for analog IN */
939 static int snd_atiixp_capture_prepare(struct snd_pcm_substream *substream)
940 {
941 struct atiixp *chip = snd_pcm_substream_chip(substream);
942
943 spin_lock_irq(&chip->reg_lock);
944 atiixp_update(chip, CMD, ATI_REG_CMD_INTERLEAVE_IN,
945 substream->runtime->format == SNDRV_PCM_FORMAT_S16_LE ?
946 ATI_REG_CMD_INTERLEAVE_IN : 0);
947 spin_unlock_irq(&chip->reg_lock);
948 return 0;
949 }
950
951 /*
952 * hw_params - allocate the buffer and set up buffer descriptors
953 */
954 static int snd_atiixp_pcm_hw_params(struct snd_pcm_substream *substream,
955 struct snd_pcm_hw_params *hw_params)
956 {
957 struct atiixp *chip = snd_pcm_substream_chip(substream);
958 struct atiixp_dma *dma = substream->runtime->private_data;
959 int err;
960
961 err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
962 if (err < 0)
963 return err;
964 dma->buf_addr = substream->runtime->dma_addr;
965 dma->buf_bytes = params_buffer_bytes(hw_params);
966
967 err = atiixp_build_dma_packets(chip, dma, substream,
968 params_periods(hw_params),
969 params_period_bytes(hw_params));
970 if (err < 0)
971 return err;
972
973 if (dma->ac97_pcm_type >= 0) {
974 struct ac97_pcm *pcm = chip->pcms[dma->ac97_pcm_type];
975 /* PCM is bound to AC97 codec(s)
976 * set up the AC97 codecs
977 */
978 if (dma->pcm_open_flag) {
979 snd_ac97_pcm_close(pcm);
980 dma->pcm_open_flag = 0;
981 }
982 err = snd_ac97_pcm_open(pcm, params_rate(hw_params),
983 params_channels(hw_params),
984 pcm->r[0].slots);
985 if (err >= 0)
986 dma->pcm_open_flag = 1;
987 }
988
989 return err;
990 }
991
992 static int snd_atiixp_pcm_hw_free(struct snd_pcm_substream *substream)
993 {
994 struct atiixp *chip = snd_pcm_substream_chip(substream);
995 struct atiixp_dma *dma = substream->runtime->private_data;
996
997 if (dma->pcm_open_flag) {
998 struct ac97_pcm *pcm = chip->pcms[dma->ac97_pcm_type];
999 snd_ac97_pcm_close(pcm);
1000 dma->pcm_open_flag = 0;
1001 }
1002 atiixp_clear_dma_packets(chip, dma, substream);
1003 snd_pcm_lib_free_pages(substream);
1004 return 0;
1005 }
1006
1007
1008 /*
1009 * pcm hardware definition, identical for all DMA types
1010 */
1011 static struct snd_pcm_hardware snd_atiixp_pcm_hw =
1012 {
1013 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1014 SNDRV_PCM_INFO_BLOCK_TRANSFER |
1015 SNDRV_PCM_INFO_PAUSE |
1016 SNDRV_PCM_INFO_RESUME |
1017 SNDRV_PCM_INFO_MMAP_VALID),
1018 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE,
1019 .rates = SNDRV_PCM_RATE_48000,
1020 .rate_min = 48000,
1021 .rate_max = 48000,
1022 .channels_min = 2,
1023 .channels_max = 2,
1024 .buffer_bytes_max = 256 * 1024,
1025 .period_bytes_min = 32,
1026 .period_bytes_max = 128 * 1024,
1027 .periods_min = 2,
1028 .periods_max = ATI_MAX_DESCRIPTORS,
1029 };
1030
1031 static int snd_atiixp_pcm_open(struct snd_pcm_substream *substream,
1032 struct atiixp_dma *dma, int pcm_type)
1033 {
1034 struct atiixp *chip = snd_pcm_substream_chip(substream);
1035 struct snd_pcm_runtime *runtime = substream->runtime;
1036 int err;
1037
1038 if (snd_BUG_ON(!dma->ops || !dma->ops->enable_dma))
1039 return -EINVAL;
1040
1041 if (dma->opened)
1042 return -EBUSY;
1043 dma->substream = substream;
1044 runtime->hw = snd_atiixp_pcm_hw;
1045 dma->ac97_pcm_type = pcm_type;
1046 if (pcm_type >= 0) {
1047 runtime->hw.rates = chip->pcms[pcm_type]->rates;
1048 snd_pcm_limit_hw_rates(runtime);
1049 } else {
1050 /* direct SPDIF */
1051 runtime->hw.formats = SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE;
1052 }
1053 if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
1054 return err;
1055 runtime->private_data = dma;
1056
1057 /* enable DMA bits */
1058 spin_lock_irq(&chip->reg_lock);
1059 dma->ops->enable_dma(chip, 1);
1060 spin_unlock_irq(&chip->reg_lock);
1061 dma->opened = 1;
1062
1063 return 0;
1064 }
1065
1066 static int snd_atiixp_pcm_close(struct snd_pcm_substream *substream,
1067 struct atiixp_dma *dma)
1068 {
1069 struct atiixp *chip = snd_pcm_substream_chip(substream);
1070 /* disable DMA bits */
1071 if (snd_BUG_ON(!dma->ops || !dma->ops->enable_dma))
1072 return -EINVAL;
1073 spin_lock_irq(&chip->reg_lock);
1074 dma->ops->enable_dma(chip, 0);
1075 spin_unlock_irq(&chip->reg_lock);
1076 dma->substream = NULL;
1077 dma->opened = 0;
1078 return 0;
1079 }
1080
1081 /*
1082 */
1083 static int snd_atiixp_playback_open(struct snd_pcm_substream *substream)
1084 {
1085 struct atiixp *chip = snd_pcm_substream_chip(substream);
1086 int err;
1087
1088 mutex_lock(&chip->open_mutex);
1089 err = snd_atiixp_pcm_open(substream, &chip->dmas[ATI_DMA_PLAYBACK], 0);
1090 mutex_unlock(&chip->open_mutex);
1091 if (err < 0)
1092 return err;
1093 substream->runtime->hw.channels_max = chip->max_channels;
1094 if (chip->max_channels > 2)
1095 /* channels must be even */
1096 snd_pcm_hw_constraint_step(substream->runtime, 0,
1097 SNDRV_PCM_HW_PARAM_CHANNELS, 2);
1098 return 0;
1099 }
1100
1101 static int snd_atiixp_playback_close(struct snd_pcm_substream *substream)
1102 {
1103 struct atiixp *chip = snd_pcm_substream_chip(substream);
1104 int err;
1105 mutex_lock(&chip->open_mutex);
1106 err = snd_atiixp_pcm_close(substream, &chip->dmas[ATI_DMA_PLAYBACK]);
1107 mutex_unlock(&chip->open_mutex);
1108 return err;
1109 }
1110
1111 static int snd_atiixp_capture_open(struct snd_pcm_substream *substream)
1112 {
1113 struct atiixp *chip = snd_pcm_substream_chip(substream);
1114 return snd_atiixp_pcm_open(substream, &chip->dmas[ATI_DMA_CAPTURE], 1);
1115 }
1116
1117 static int snd_atiixp_capture_close(struct snd_pcm_substream *substream)
1118 {
1119 struct atiixp *chip = snd_pcm_substream_chip(substream);
1120 return snd_atiixp_pcm_close(substream, &chip->dmas[ATI_DMA_CAPTURE]);
1121 }
1122
1123 static int snd_atiixp_spdif_open(struct snd_pcm_substream *substream)
1124 {
1125 struct atiixp *chip = snd_pcm_substream_chip(substream);
1126 int err;
1127 mutex_lock(&chip->open_mutex);
1128 if (chip->spdif_over_aclink) /* share DMA_PLAYBACK */
1129 err = snd_atiixp_pcm_open(substream, &chip->dmas[ATI_DMA_PLAYBACK], 2);
1130 else
1131 err = snd_atiixp_pcm_open(substream, &chip->dmas[ATI_DMA_SPDIF], -1);
1132 mutex_unlock(&chip->open_mutex);
1133 return err;
1134 }
1135
1136 static int snd_atiixp_spdif_close(struct snd_pcm_substream *substream)
1137 {
1138 struct atiixp *chip = snd_pcm_substream_chip(substream);
1139 int err;
1140 mutex_lock(&chip->open_mutex);
1141 if (chip->spdif_over_aclink)
1142 err = snd_atiixp_pcm_close(substream, &chip->dmas[ATI_DMA_PLAYBACK]);
1143 else
1144 err = snd_atiixp_pcm_close(substream, &chip->dmas[ATI_DMA_SPDIF]);
1145 mutex_unlock(&chip->open_mutex);
1146 return err;
1147 }
1148
1149 /* AC97 playback */
1150 static struct snd_pcm_ops snd_atiixp_playback_ops = {
1151 .open = snd_atiixp_playback_open,
1152 .close = snd_atiixp_playback_close,
1153 .ioctl = snd_pcm_lib_ioctl,
1154 .hw_params = snd_atiixp_pcm_hw_params,
1155 .hw_free = snd_atiixp_pcm_hw_free,
1156 .prepare = snd_atiixp_playback_prepare,
1157 .trigger = snd_atiixp_pcm_trigger,
1158 .pointer = snd_atiixp_pcm_pointer,
1159 };
1160
1161 /* AC97 capture */
1162 static struct snd_pcm_ops snd_atiixp_capture_ops = {
1163 .open = snd_atiixp_capture_open,
1164 .close = snd_atiixp_capture_close,
1165 .ioctl = snd_pcm_lib_ioctl,
1166 .hw_params = snd_atiixp_pcm_hw_params,
1167 .hw_free = snd_atiixp_pcm_hw_free,
1168 .prepare = snd_atiixp_capture_prepare,
1169 .trigger = snd_atiixp_pcm_trigger,
1170 .pointer = snd_atiixp_pcm_pointer,
1171 };
1172
1173 /* SPDIF playback */
1174 static struct snd_pcm_ops snd_atiixp_spdif_ops = {
1175 .open = snd_atiixp_spdif_open,
1176 .close = snd_atiixp_spdif_close,
1177 .ioctl = snd_pcm_lib_ioctl,
1178 .hw_params = snd_atiixp_pcm_hw_params,
1179 .hw_free = snd_atiixp_pcm_hw_free,
1180 .prepare = snd_atiixp_spdif_prepare,
1181 .trigger = snd_atiixp_pcm_trigger,
1182 .pointer = snd_atiixp_pcm_pointer,
1183 };
1184
1185 static struct ac97_pcm atiixp_pcm_defs[] __devinitdata = {
1186 /* front PCM */
1187 {
1188 .exclusive = 1,
1189 .r = { {
1190 .slots = (1 << AC97_SLOT_PCM_LEFT) |
1191 (1 << AC97_SLOT_PCM_RIGHT) |
1192 (1 << AC97_SLOT_PCM_CENTER) |
1193 (1 << AC97_SLOT_PCM_SLEFT) |
1194 (1 << AC97_SLOT_PCM_SRIGHT) |
1195 (1 << AC97_SLOT_LFE)
1196 }
1197 }
1198 },
1199 /* PCM IN #1 */
1200 {
1201 .stream = 1,
1202 .exclusive = 1,
1203 .r = { {
1204 .slots = (1 << AC97_SLOT_PCM_LEFT) |
1205 (1 << AC97_SLOT_PCM_RIGHT)
1206 }
1207 }
1208 },
1209 /* S/PDIF OUT (optional) */
1210 {
1211 .exclusive = 1,
1212 .spdif = 1,
1213 .r = { {
1214 .slots = (1 << AC97_SLOT_SPDIF_LEFT2) |
1215 (1 << AC97_SLOT_SPDIF_RIGHT2)
1216 }
1217 }
1218 },
1219 };
1220
1221 static struct atiixp_dma_ops snd_atiixp_playback_dma_ops = {
1222 .type = ATI_DMA_PLAYBACK,
1223 .llp_offset = ATI_REG_OUT_DMA_LINKPTR,
1224 .dt_cur = ATI_REG_OUT_DMA_DT_CUR,
1225 .enable_dma = atiixp_out_enable_dma,
1226 .enable_transfer = atiixp_out_enable_transfer,
1227 .flush_dma = atiixp_out_flush_dma,
1228 };
1229
1230 static struct atiixp_dma_ops snd_atiixp_capture_dma_ops = {
1231 .type = ATI_DMA_CAPTURE,
1232 .llp_offset = ATI_REG_IN_DMA_LINKPTR,
1233 .dt_cur = ATI_REG_IN_DMA_DT_CUR,
1234 .enable_dma = atiixp_in_enable_dma,
1235 .enable_transfer = atiixp_in_enable_transfer,
1236 .flush_dma = atiixp_in_flush_dma,
1237 };
1238
1239 static struct atiixp_dma_ops snd_atiixp_spdif_dma_ops = {
1240 .type = ATI_DMA_SPDIF,
1241 .llp_offset = ATI_REG_SPDF_DMA_LINKPTR,
1242 .dt_cur = ATI_REG_SPDF_DMA_DT_CUR,
1243 .enable_dma = atiixp_spdif_enable_dma,
1244 .enable_transfer = atiixp_spdif_enable_transfer,
1245 .flush_dma = atiixp_spdif_flush_dma,
1246 };
1247
1248
1249 static int __devinit snd_atiixp_pcm_new(struct atiixp *chip)
1250 {
1251 struct snd_pcm *pcm;
1252 struct snd_ac97_bus *pbus = chip->ac97_bus;
1253 int err, i, num_pcms;
1254
1255 /* initialize constants */
1256 chip->dmas[ATI_DMA_PLAYBACK].ops = &snd_atiixp_playback_dma_ops;
1257 chip->dmas[ATI_DMA_CAPTURE].ops = &snd_atiixp_capture_dma_ops;
1258 if (! chip->spdif_over_aclink)
1259 chip->dmas[ATI_DMA_SPDIF].ops = &snd_atiixp_spdif_dma_ops;
1260
1261 /* assign AC97 pcm */
1262 if (chip->spdif_over_aclink)
1263 num_pcms = 3;
1264 else
1265 num_pcms = 2;
1266 err = snd_ac97_pcm_assign(pbus, num_pcms, atiixp_pcm_defs);
1267 if (err < 0)
1268 return err;
1269 for (i = 0; i < num_pcms; i++)
1270 chip->pcms[i] = &pbus->pcms[i];
1271
1272 chip->max_channels = 2;
1273 if (pbus->pcms[ATI_PCM_OUT].r[0].slots & (1 << AC97_SLOT_PCM_SLEFT)) {
1274 if (pbus->pcms[ATI_PCM_OUT].r[0].slots & (1 << AC97_SLOT_LFE))
1275 chip->max_channels = 6;
1276 else
1277 chip->max_channels = 4;
1278 }
1279
1280 /* PCM #0: analog I/O */
1281 err = snd_pcm_new(chip->card, "ATI IXP AC97",
1282 ATI_PCMDEV_ANALOG, 1, 1, &pcm);
1283 if (err < 0)
1284 return err;
1285 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_atiixp_playback_ops);
1286 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_atiixp_capture_ops);
1287 pcm->private_data = chip;
1288 strcpy(pcm->name, "ATI IXP AC97");
1289 chip->pcmdevs[ATI_PCMDEV_ANALOG] = pcm;
1290
1291 snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1292 snd_dma_pci_data(chip->pci),
1293 64*1024, 128*1024);
1294
1295 /* no SPDIF support on codec? */
1296 if (chip->pcms[ATI_PCM_SPDIF] && ! chip->pcms[ATI_PCM_SPDIF]->rates)
1297 return 0;
1298
1299 /* FIXME: non-48k sample rate doesn't work on my test machine with AD1888 */
1300 if (chip->pcms[ATI_PCM_SPDIF])
1301 chip->pcms[ATI_PCM_SPDIF]->rates = SNDRV_PCM_RATE_48000;
1302
1303 /* PCM #1: spdif playback */
1304 err = snd_pcm_new(chip->card, "ATI IXP IEC958",
1305 ATI_PCMDEV_DIGITAL, 1, 0, &pcm);
1306 if (err < 0)
1307 return err;
1308 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_atiixp_spdif_ops);
1309 pcm->private_data = chip;
1310 if (chip->spdif_over_aclink)
1311 strcpy(pcm->name, "ATI IXP IEC958 (AC97)");
1312 else
1313 strcpy(pcm->name, "ATI IXP IEC958 (Direct)");
1314 chip->pcmdevs[ATI_PCMDEV_DIGITAL] = pcm;
1315
1316 snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1317 snd_dma_pci_data(chip->pci),
1318 64*1024, 128*1024);
1319
1320 /* pre-select AC97 SPDIF slots 10/11 */
1321 for (i = 0; i < NUM_ATI_CODECS; i++) {
1322 if (chip->ac97[i])
1323 snd_ac97_update_bits(chip->ac97[i],
1324 AC97_EXTENDED_STATUS,
1325 0x03 << 4, 0x03 << 4);
1326 }
1327
1328 return 0;
1329 }
1330
1331
1332
1333 /*
1334 * interrupt handler
1335 */
1336 static irqreturn_t snd_atiixp_interrupt(int irq, void *dev_id)
1337 {
1338 struct atiixp *chip = dev_id;
1339 unsigned int status;
1340
1341 status = atiixp_read(chip, ISR);
1342
1343 if (! status)
1344 return IRQ_NONE;
1345
1346 /* process audio DMA */
1347 if (status & ATI_REG_ISR_OUT_XRUN)
1348 snd_atiixp_xrun_dma(chip, &chip->dmas[ATI_DMA_PLAYBACK]);
1349 else if (status & ATI_REG_ISR_OUT_STATUS)
1350 snd_atiixp_update_dma(chip, &chip->dmas[ATI_DMA_PLAYBACK]);
1351 if (status & ATI_REG_ISR_IN_XRUN)
1352 snd_atiixp_xrun_dma(chip, &chip->dmas[ATI_DMA_CAPTURE]);
1353 else if (status & ATI_REG_ISR_IN_STATUS)
1354 snd_atiixp_update_dma(chip, &chip->dmas[ATI_DMA_CAPTURE]);
1355 if (! chip->spdif_over_aclink) {
1356 if (status & ATI_REG_ISR_SPDF_XRUN)
1357 snd_atiixp_xrun_dma(chip, &chip->dmas[ATI_DMA_SPDIF]);
1358 else if (status & ATI_REG_ISR_SPDF_STATUS)
1359 snd_atiixp_update_dma(chip, &chip->dmas[ATI_DMA_SPDIF]);
1360 }
1361
1362 /* for codec detection */
1363 if (status & CODEC_CHECK_BITS) {
1364 unsigned int detected;
1365 detected = status & CODEC_CHECK_BITS;
1366 spin_lock(&chip->reg_lock);
1367 chip->codec_not_ready_bits |= detected;
1368 atiixp_update(chip, IER, detected, 0); /* disable the detected irqs */
1369 spin_unlock(&chip->reg_lock);
1370 }
1371
1372 /* ack */
1373 atiixp_write(chip, ISR, status);
1374
1375 return IRQ_HANDLED;
1376 }
1377
1378
1379 /*
1380 * ac97 mixer section
1381 */
1382
1383 static struct ac97_quirk ac97_quirks[] __devinitdata = {
1384 {
1385 .subvendor = 0x103c,
1386 .subdevice = 0x006b,
1387 .name = "HP Pavilion ZV5030US",
1388 .type = AC97_TUNE_MUTE_LED
1389 },
1390 {
1391 .subvendor = 0x103c,
1392 .subdevice = 0x308b,
1393 .name = "HP nx6125",
1394 .type = AC97_TUNE_MUTE_LED
1395 },
1396 {
1397 .subvendor = 0x103c,
1398 .subdevice = 0x3091,
1399 .name = "unknown HP",
1400 .type = AC97_TUNE_MUTE_LED
1401 },
1402 { } /* terminator */
1403 };
1404
1405 static int __devinit snd_atiixp_mixer_new(struct atiixp *chip, int clock,
1406 const char *quirk_override)
1407 {
1408 struct snd_ac97_bus *pbus;
1409 struct snd_ac97_template ac97;
1410 int i, err;
1411 int codec_count;
1412 static struct snd_ac97_bus_ops ops = {
1413 .write = snd_atiixp_ac97_write,
1414 .read = snd_atiixp_ac97_read,
1415 };
1416 static unsigned int codec_skip[NUM_ATI_CODECS] = {
1417 ATI_REG_ISR_CODEC0_NOT_READY,
1418 ATI_REG_ISR_CODEC1_NOT_READY,
1419 ATI_REG_ISR_CODEC2_NOT_READY,
1420 };
1421
1422 if (snd_atiixp_codec_detect(chip) < 0)
1423 return -ENXIO;
1424
1425 if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &pbus)) < 0)
1426 return err;
1427 pbus->clock = clock;
1428 chip->ac97_bus = pbus;
1429
1430 codec_count = 0;
1431 for (i = 0; i < NUM_ATI_CODECS; i++) {
1432 if (chip->codec_not_ready_bits & codec_skip[i])
1433 continue;
1434 memset(&ac97, 0, sizeof(ac97));
1435 ac97.private_data = chip;
1436 ac97.pci = chip->pci;
1437 ac97.num = i;
1438 ac97.scaps = AC97_SCAP_SKIP_MODEM | AC97_SCAP_POWER_SAVE;
1439 if (! chip->spdif_over_aclink)
1440 ac97.scaps |= AC97_SCAP_NO_SPDIF;
1441 if ((err = snd_ac97_mixer(pbus, &ac97, &chip->ac97[i])) < 0) {
1442 chip->ac97[i] = NULL; /* to be sure */
1443 snd_printdd("atiixp: codec %d not available for audio\n", i);
1444 continue;
1445 }
1446 codec_count++;
1447 }
1448
1449 if (! codec_count) {
1450 snd_printk(KERN_ERR "atiixp: no codec available\n");
1451 return -ENODEV;
1452 }
1453
1454 snd_ac97_tune_hardware(chip->ac97[0], ac97_quirks, quirk_override);
1455
1456 return 0;
1457 }
1458
1459
1460 #ifdef CONFIG_PM
1461 /*
1462 * power management
1463 */
1464 static int snd_atiixp_suspend(struct pci_dev *pci, pm_message_t state)
1465 {
1466 struct snd_card *card = pci_get_drvdata(pci);
1467 struct atiixp *chip = card->private_data;
1468 int i;
1469
1470 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
1471 for (i = 0; i < NUM_ATI_PCMDEVS; i++)
1472 if (chip->pcmdevs[i]) {
1473 struct atiixp_dma *dma = &chip->dmas[i];
1474 if (dma->substream && dma->running)
1475 dma->saved_curptr = readl(chip->remap_addr +
1476 dma->ops->dt_cur);
1477 snd_pcm_suspend_all(chip->pcmdevs[i]);
1478 }
1479 for (i = 0; i < NUM_ATI_CODECS; i++)
1480 snd_ac97_suspend(chip->ac97[i]);
1481 snd_atiixp_aclink_down(chip);
1482 snd_atiixp_chip_stop(chip);
1483
1484 pci_disable_device(pci);
1485 pci_save_state(pci);
1486 pci_set_power_state(pci, pci_choose_state(pci, state));
1487 return 0;
1488 }
1489
1490 static int snd_atiixp_resume(struct pci_dev *pci)
1491 {
1492 struct snd_card *card = pci_get_drvdata(pci);
1493 struct atiixp *chip = card->private_data;
1494 int i;
1495
1496 pci_set_power_state(pci, PCI_D0);
1497 pci_restore_state(pci);
1498 if (pci_enable_device(pci) < 0) {
1499 printk(KERN_ERR "atiixp: pci_enable_device failed, "
1500 "disabling device\n");
1501 snd_card_disconnect(card);
1502 return -EIO;
1503 }
1504 pci_set_master(pci);
1505
1506 snd_atiixp_aclink_reset(chip);
1507 snd_atiixp_chip_start(chip);
1508
1509 for (i = 0; i < NUM_ATI_CODECS; i++)
1510 snd_ac97_resume(chip->ac97[i]);
1511
1512 for (i = 0; i < NUM_ATI_PCMDEVS; i++)
1513 if (chip->pcmdevs[i]) {
1514 struct atiixp_dma *dma = &chip->dmas[i];
1515 if (dma->substream && dma->suspended) {
1516 dma->ops->enable_dma(chip, 1);
1517 dma->substream->ops->prepare(dma->substream);
1518 writel((u32)dma->desc_buf.addr | ATI_REG_LINKPTR_EN,
1519 chip->remap_addr + dma->ops->llp_offset);
1520 writel(dma->saved_curptr, chip->remap_addr +
1521 dma->ops->dt_cur);
1522 }
1523 }
1524
1525 snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1526 return 0;
1527 }
1528 #endif /* CONFIG_PM */
1529
1530
1531 #ifdef CONFIG_PROC_FS
1532 /*
1533 * proc interface for register dump
1534 */
1535
1536 static void snd_atiixp_proc_read(struct snd_info_entry *entry,
1537 struct snd_info_buffer *buffer)
1538 {
1539 struct atiixp *chip = entry->private_data;
1540 int i;
1541
1542 for (i = 0; i < 256; i += 4)
1543 snd_iprintf(buffer, "%02x: %08x\n", i, readl(chip->remap_addr + i));
1544 }
1545
1546 static void __devinit snd_atiixp_proc_init(struct atiixp *chip)
1547 {
1548 struct snd_info_entry *entry;
1549
1550 if (! snd_card_proc_new(chip->card, "atiixp", &entry))
1551 snd_info_set_text_ops(entry, chip, snd_atiixp_proc_read);
1552 }
1553 #else /* !CONFIG_PROC_FS */
1554 #define snd_atiixp_proc_init(chip)
1555 #endif
1556
1557
1558 /*
1559 * destructor
1560 */
1561
1562 static int snd_atiixp_free(struct atiixp *chip)
1563 {
1564 if (chip->irq < 0)
1565 goto __hw_end;
1566 snd_atiixp_chip_stop(chip);
1567
1568 __hw_end:
1569 if (chip->irq >= 0)
1570 free_irq(chip->irq, chip);
1571 if (chip->remap_addr)
1572 iounmap(chip->remap_addr);
1573 pci_release_regions(chip->pci);
1574 pci_disable_device(chip->pci);
1575 kfree(chip);
1576 return 0;
1577 }
1578
1579 static int snd_atiixp_dev_free(struct snd_device *device)
1580 {
1581 struct atiixp *chip = device->device_data;
1582 return snd_atiixp_free(chip);
1583 }
1584
1585 /*
1586 * constructor for chip instance
1587 */
1588 static int __devinit snd_atiixp_create(struct snd_card *card,
1589 struct pci_dev *pci,
1590 struct atiixp **r_chip)
1591 {
1592 static struct snd_device_ops ops = {
1593 .dev_free = snd_atiixp_dev_free,
1594 };
1595 struct atiixp *chip;
1596 int err;
1597
1598 if ((err = pci_enable_device(pci)) < 0)
1599 return err;
1600
1601 chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1602 if (chip == NULL) {
1603 pci_disable_device(pci);
1604 return -ENOMEM;
1605 }
1606
1607 spin_lock_init(&chip->reg_lock);
1608 mutex_init(&chip->open_mutex);
1609 chip->card = card;
1610 chip->pci = pci;
1611 chip->irq = -1;
1612 if ((err = pci_request_regions(pci, "ATI IXP AC97")) < 0) {
1613 pci_disable_device(pci);
1614 kfree(chip);
1615 return err;
1616 }
1617 chip->addr = pci_resource_start(pci, 0);
1618 chip->remap_addr = pci_ioremap_bar(pci, 0);
1619 if (chip->remap_addr == NULL) {
1620 snd_printk(KERN_ERR "AC'97 space ioremap problem\n");
1621 snd_atiixp_free(chip);
1622 return -EIO;
1623 }
1624
1625 if (request_irq(pci->irq, snd_atiixp_interrupt, IRQF_SHARED,
1626 card->shortname, chip)) {
1627 snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq);
1628 snd_atiixp_free(chip);
1629 return -EBUSY;
1630 }
1631 chip->irq = pci->irq;
1632 pci_set_master(pci);
1633 synchronize_irq(chip->irq);
1634
1635 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1636 snd_atiixp_free(chip);
1637 return err;
1638 }
1639
1640 snd_card_set_dev(card, &pci->dev);
1641
1642 *r_chip = chip;
1643 return 0;
1644 }
1645
1646
1647 static int __devinit snd_atiixp_probe(struct pci_dev *pci,
1648 const struct pci_device_id *pci_id)
1649 {
1650 struct snd_card *card;
1651 struct atiixp *chip;
1652 int err;
1653
1654 err = snd_card_create(index, id, THIS_MODULE, 0, &card);
1655 if (err < 0)
1656 return err;
1657
1658 strcpy(card->driver, spdif_aclink ? "ATIIXP" : "ATIIXP-SPDMA");
1659 strcpy(card->shortname, "ATI IXP");
1660 if ((err = snd_atiixp_create(card, pci, &chip)) < 0)
1661 goto __error;
1662 card->private_data = chip;
1663
1664 if ((err = snd_atiixp_aclink_reset(chip)) < 0)
1665 goto __error;
1666
1667 chip->spdif_over_aclink = spdif_aclink;
1668
1669 if ((err = snd_atiixp_mixer_new(chip, ac97_clock, ac97_quirk)) < 0)
1670 goto __error;
1671
1672 if ((err = snd_atiixp_pcm_new(chip)) < 0)
1673 goto __error;
1674
1675 snd_atiixp_proc_init(chip);
1676
1677 snd_atiixp_chip_start(chip);
1678
1679 snprintf(card->longname, sizeof(card->longname),
1680 "%s rev %x with %s at %#lx, irq %i", card->shortname,
1681 pci->revision,
1682 chip->ac97[0] ? snd_ac97_get_short_name(chip->ac97[0]) : "?",
1683 chip->addr, chip->irq);
1684
1685 if ((err = snd_card_register(card)) < 0)
1686 goto __error;
1687
1688 pci_set_drvdata(pci, card);
1689 return 0;
1690
1691 __error:
1692 snd_card_free(card);
1693 return err;
1694 }
1695
1696 static void __devexit snd_atiixp_remove(struct pci_dev *pci)
1697 {
1698 snd_card_free(pci_get_drvdata(pci));
1699 pci_set_drvdata(pci, NULL);
1700 }
1701
1702 static struct pci_driver driver = {
1703 .name = "ATI IXP AC97 controller",
1704 .id_table = snd_atiixp_ids,
1705 .probe = snd_atiixp_probe,
1706 .remove = __devexit_p(snd_atiixp_remove),
1707 #ifdef CONFIG_PM
1708 .suspend = snd_atiixp_suspend,
1709 .resume = snd_atiixp_resume,
1710 #endif
1711 };
1712
1713
1714 static int __init alsa_card_atiixp_init(void)
1715 {
1716 return pci_register_driver(&driver);
1717 }
1718
1719 static void __exit alsa_card_atiixp_exit(void)
1720 {
1721 pci_unregister_driver(&driver);
1722 }
1723
1724 module_init(alsa_card_atiixp_init)
1725 module_exit(alsa_card_atiixp_exit)
Support for the Chinese Samsung S3C2440 based development boards