?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
[ALSA] virtuoso: move some code to xonar_common_init()
[linux-2.6/mini2440.git] / sound / pci / atiixp.c
blob4594186b83ee7bfb4b157b6eff9e2aba79aa0916
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}}");
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 { 0x1002, 0x4341, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, /* SB200 */
291 { 0x1002, 0x4361, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, /* SB300 */
292 { 0x1002, 0x4370, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, /* SB400 */
293 { 0, }
294 };
295
296 MODULE_DEVICE_TABLE(pci, snd_atiixp_ids);
297
298 static struct snd_pci_quirk atiixp_quirks[] __devinitdata = {
299 SND_PCI_QUIRK(0x15bd, 0x3100, "DFI RS482", 0),
300 { } /* terminator */
301 };
302
303 /*
304 * lowlevel functions
305 */
306
307 /*
308 * update the bits of the given register.
309 * return 1 if the bits changed.
310 */
311 static int snd_atiixp_update_bits(struct atiixp *chip, unsigned int reg,
312 unsigned int mask, unsigned int value)
313 {
314 void __iomem *addr = chip->remap_addr + reg;
315 unsigned int data, old_data;
316 old_data = data = readl(addr);
317 data &= ~mask;
318 data |= value;
319 if (old_data == data)
320 return 0;
321 writel(data, addr);
322 return 1;
323 }
324
325 /*
326 * macros for easy use
327 */
328 #define atiixp_write(chip,reg,value) \
329 writel(value, chip->remap_addr + ATI_REG_##reg)
330 #define atiixp_read(chip,reg) \
331 readl(chip->remap_addr + ATI_REG_##reg)
332 #define atiixp_update(chip,reg,mask,val) \
333 snd_atiixp_update_bits(chip, ATI_REG_##reg, mask, val)
334
335 /*
336 * handling DMA packets
337 *
338 * we allocate a linear buffer for the DMA, and split it to each packet.
339 * in a future version, a scatter-gather buffer should be implemented.
340 */
341
342 #define ATI_DESC_LIST_SIZE \
343 PAGE_ALIGN(ATI_MAX_DESCRIPTORS * sizeof(struct atiixp_dma_desc))
344
345 /*
346 * build packets ring for the given buffer size.
347 *
348 * IXP handles the buffer descriptors, which are connected as a linked
349 * list. although we can change the list dynamically, in this version,
350 * a static RING of buffer descriptors is used.
351 *
352 * the ring is built in this function, and is set up to the hardware.
353 */
354 static int atiixp_build_dma_packets(struct atiixp *chip, struct atiixp_dma *dma,
355 struct snd_pcm_substream *substream,
356 unsigned int periods,
357 unsigned int period_bytes)
358 {
359 unsigned int i;
360 u32 addr, desc_addr;
361 unsigned long flags;
362
363 if (periods > ATI_MAX_DESCRIPTORS)
364 return -ENOMEM;
365
366 if (dma->desc_buf.area == NULL) {
367 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV,
368 snd_dma_pci_data(chip->pci),
369 ATI_DESC_LIST_SIZE,
370 &dma->desc_buf) < 0)
371 return -ENOMEM;
372 dma->period_bytes = dma->periods = 0; /* clear */
373 }
374
375 if (dma->periods == periods && dma->period_bytes == period_bytes)
376 return 0;
377
378 /* reset DMA before changing the descriptor table */
379 spin_lock_irqsave(&chip->reg_lock, flags);
380 writel(0, chip->remap_addr + dma->ops->llp_offset);
381 dma->ops->enable_dma(chip, 0);
382 dma->ops->enable_dma(chip, 1);
383 spin_unlock_irqrestore(&chip->reg_lock, flags);
384
385 /* fill the entries */
386 addr = (u32)substream->runtime->dma_addr;
387 desc_addr = (u32)dma->desc_buf.addr;
388 for (i = 0; i < periods; i++) {
389 struct atiixp_dma_desc *desc;
390 desc = &((struct atiixp_dma_desc *)dma->desc_buf.area)[i];
391 desc->addr = cpu_to_le32(addr);
392 desc->status = 0;
393 desc->size = period_bytes >> 2; /* in dwords */
394 desc_addr += sizeof(struct atiixp_dma_desc);
395 if (i == periods - 1)
396 desc->next = cpu_to_le32((u32)dma->desc_buf.addr);
397 else
398 desc->next = cpu_to_le32(desc_addr);
399 addr += period_bytes;
400 }
401
402 writel((u32)dma->desc_buf.addr | ATI_REG_LINKPTR_EN,
403 chip->remap_addr + dma->ops->llp_offset);
404
405 dma->period_bytes = period_bytes;
406 dma->periods = periods;
407
408 return 0;
409 }
410
411 /*
412 * remove the ring buffer and release it if assigned
413 */
414 static void atiixp_clear_dma_packets(struct atiixp *chip, struct atiixp_dma *dma,
415 struct snd_pcm_substream *substream)
416 {
417 if (dma->desc_buf.area) {
418 writel(0, chip->remap_addr + dma->ops->llp_offset);
419 snd_dma_free_pages(&dma->desc_buf);
420 dma->desc_buf.area = NULL;
421 }
422 }
423
424 /*
425 * AC97 interface
426 */
427 static int snd_atiixp_acquire_codec(struct atiixp *chip)
428 {
429 int timeout = 1000;
430
431 while (atiixp_read(chip, PHYS_OUT_ADDR) & ATI_REG_PHYS_OUT_ADDR_EN) {
432 if (! timeout--) {
433 snd_printk(KERN_WARNING "atiixp: codec acquire timeout\n");
434 return -EBUSY;
435 }
436 udelay(1);
437 }
438 return 0;
439 }
440
441 static unsigned short snd_atiixp_codec_read(struct atiixp *chip, unsigned short codec, unsigned short reg)
442 {
443 unsigned int data;
444 int timeout;
445
446 if (snd_atiixp_acquire_codec(chip) < 0)
447 return 0xffff;
448 data = (reg << ATI_REG_PHYS_OUT_ADDR_SHIFT) |
449 ATI_REG_PHYS_OUT_ADDR_EN |
450 ATI_REG_PHYS_OUT_RW |
451 codec;
452 atiixp_write(chip, PHYS_OUT_ADDR, data);
453 if (snd_atiixp_acquire_codec(chip) < 0)
454 return 0xffff;
455 timeout = 1000;
456 do {
457 data = atiixp_read(chip, PHYS_IN_ADDR);
458 if (data & ATI_REG_PHYS_IN_READ_FLAG)
459 return data >> ATI_REG_PHYS_IN_DATA_SHIFT;
460 udelay(1);
461 } while (--timeout);
462 /* time out may happen during reset */
463 if (reg < 0x7c)
464 snd_printk(KERN_WARNING "atiixp: codec read timeout (reg %x)\n", reg);
465 return 0xffff;
466 }
467
468
469 static void snd_atiixp_codec_write(struct atiixp *chip, unsigned short codec,
470 unsigned short reg, unsigned short val)
471 {
472 unsigned int data;
473
474 if (snd_atiixp_acquire_codec(chip) < 0)
475 return;
476 data = ((unsigned int)val << ATI_REG_PHYS_OUT_DATA_SHIFT) |
477 ((unsigned int)reg << ATI_REG_PHYS_OUT_ADDR_SHIFT) |
478 ATI_REG_PHYS_OUT_ADDR_EN | codec;
479 atiixp_write(chip, PHYS_OUT_ADDR, data);
480 }
481
482
483 static unsigned short snd_atiixp_ac97_read(struct snd_ac97 *ac97,
484 unsigned short reg)
485 {
486 struct atiixp *chip = ac97->private_data;
487 return snd_atiixp_codec_read(chip, ac97->num, reg);
488
489 }
490
491 static void snd_atiixp_ac97_write(struct snd_ac97 *ac97, unsigned short reg,
492 unsigned short val)
493 {
494 struct atiixp *chip = ac97->private_data;
495 snd_atiixp_codec_write(chip, ac97->num, reg, val);
496 }
497
498 /*
499 * reset AC link
500 */
501 static int snd_atiixp_aclink_reset(struct atiixp *chip)
502 {
503 int timeout;
504
505 /* reset powerdoewn */
506 if (atiixp_update(chip, CMD, ATI_REG_CMD_POWERDOWN, 0))
507 udelay(10);
508
509 /* perform a software reset */
510 atiixp_update(chip, CMD, ATI_REG_CMD_AC_SOFT_RESET, ATI_REG_CMD_AC_SOFT_RESET);
511 atiixp_read(chip, CMD);
512 udelay(10);
513 atiixp_update(chip, CMD, ATI_REG_CMD_AC_SOFT_RESET, 0);
514
515 timeout = 10;
516 while (! (atiixp_read(chip, CMD) & ATI_REG_CMD_ACLINK_ACTIVE)) {
517 /* do a hard reset */
518 atiixp_update(chip, CMD, ATI_REG_CMD_AC_SYNC|ATI_REG_CMD_AC_RESET,
519 ATI_REG_CMD_AC_SYNC);
520 atiixp_read(chip, CMD);
521 mdelay(1);
522 atiixp_update(chip, CMD, ATI_REG_CMD_AC_RESET, ATI_REG_CMD_AC_RESET);
523 if (--timeout) {
524 snd_printk(KERN_ERR "atiixp: codec reset timeout\n");
525 break;
526 }
527 }
528
529 /* deassert RESET and assert SYNC to make sure */
530 atiixp_update(chip, CMD, ATI_REG_CMD_AC_SYNC|ATI_REG_CMD_AC_RESET,
531 ATI_REG_CMD_AC_SYNC|ATI_REG_CMD_AC_RESET);
532
533 return 0;
534 }
535
536 #ifdef CONFIG_PM
537 static int snd_atiixp_aclink_down(struct atiixp *chip)
538 {
539 // if (atiixp_read(chip, MODEM_MIRROR) & 0x1) /* modem running, too? */
540 // return -EBUSY;
541 atiixp_update(chip, CMD,
542 ATI_REG_CMD_POWERDOWN | ATI_REG_CMD_AC_RESET,
543 ATI_REG_CMD_POWERDOWN);
544 return 0;
545 }
546 #endif
547
548 /*
549 * auto-detection of codecs
550 *
551 * the IXP chip can generate interrupts for the non-existing codecs.
552 * NEW_FRAME interrupt is used to make sure that the interrupt is generated
553 * even if all three codecs are connected.
554 */
555
556 #define ALL_CODEC_NOT_READY \
557 (ATI_REG_ISR_CODEC0_NOT_READY |\
558 ATI_REG_ISR_CODEC1_NOT_READY |\
559 ATI_REG_ISR_CODEC2_NOT_READY)
560 #define CODEC_CHECK_BITS (ALL_CODEC_NOT_READY|ATI_REG_ISR_NEW_FRAME)
561
562 static int __devinit ac97_probing_bugs(struct pci_dev *pci)
563 {
564 const struct snd_pci_quirk *q;
565
566 q = snd_pci_quirk_lookup(pci, atiixp_quirks);
567 if (q) {
568 snd_printdd(KERN_INFO "Atiixp quirk for %s. "
569 "Forcing codec %d\n", q->name, q->value);
570 return q->value;
571 }
572 /* this hardware doesn't need workarounds. Probe for codec */
573 return -1;
574 }
575
576 static int __devinit snd_atiixp_codec_detect(struct atiixp *chip)
577 {
578 int timeout;
579
580 chip->codec_not_ready_bits = 0;
581 if (ac97_codec == -1)
582 ac97_codec = ac97_probing_bugs(chip->pci);
583 if (ac97_codec >= 0) {
584 chip->codec_not_ready_bits |=
585 CODEC_CHECK_BITS ^ (1 << (ac97_codec + 10));
586 return 0;
587 }
588
589 atiixp_write(chip, IER, CODEC_CHECK_BITS);
590 /* wait for the interrupts */
591 timeout = 50;
592 while (timeout-- > 0) {
593 mdelay(1);
594 if (chip->codec_not_ready_bits)
595 break;
596 }
597 atiixp_write(chip, IER, 0); /* disable irqs */
598
599 if ((chip->codec_not_ready_bits & ALL_CODEC_NOT_READY) == ALL_CODEC_NOT_READY) {
600 snd_printk(KERN_ERR "atiixp: no codec detected!\n");
601 return -ENXIO;
602 }
603 return 0;
604 }
605
606
607 /*
608 * enable DMA and irqs
609 */
610 static int snd_atiixp_chip_start(struct atiixp *chip)
611 {
612 unsigned int reg;
613
614 /* set up spdif, enable burst mode */
615 reg = atiixp_read(chip, CMD);
616 reg |= 0x02 << ATI_REG_CMD_SPDF_THRESHOLD_SHIFT;
617 reg |= ATI_REG_CMD_BURST_EN;
618 atiixp_write(chip, CMD, reg);
619
620 reg = atiixp_read(chip, SPDF_CMD);
621 reg &= ~(ATI_REG_SPDF_CMD_LFSR|ATI_REG_SPDF_CMD_SINGLE_CH);
622 atiixp_write(chip, SPDF_CMD, reg);
623
624 /* clear all interrupt source */
625 atiixp_write(chip, ISR, 0xffffffff);
626 /* enable irqs */
627 atiixp_write(chip, IER,
628 ATI_REG_IER_IO_STATUS_EN |
629 ATI_REG_IER_IN_XRUN_EN |
630 ATI_REG_IER_OUT_XRUN_EN |
631 ATI_REG_IER_SPDF_XRUN_EN |
632 ATI_REG_IER_SPDF_STATUS_EN);
633 return 0;
634 }
635
636
637 /*
638 * disable DMA and IRQs
639 */
640 static int snd_atiixp_chip_stop(struct atiixp *chip)
641 {
642 /* clear interrupt source */
643 atiixp_write(chip, ISR, atiixp_read(chip, ISR));
644 /* disable irqs */
645 atiixp_write(chip, IER, 0);
646 return 0;
647 }
648
649
650 /*
651 * PCM section
652 */
653
654 /*
655 * pointer callback simplly reads XXX_DMA_DT_CUR register as the current
656 * position. when SG-buffer is implemented, the offset must be calculated
657 * correctly...
658 */
659 static snd_pcm_uframes_t snd_atiixp_pcm_pointer(struct snd_pcm_substream *substream)
660 {
661 struct atiixp *chip = snd_pcm_substream_chip(substream);
662 struct snd_pcm_runtime *runtime = substream->runtime;
663 struct atiixp_dma *dma = runtime->private_data;
664 unsigned int curptr;
665 int timeout = 1000;
666
667 while (timeout--) {
668 curptr = readl(chip->remap_addr + dma->ops->dt_cur);
669 if (curptr < dma->buf_addr)
670 continue;
671 curptr -= dma->buf_addr;
672 if (curptr >= dma->buf_bytes)
673 continue;
674 return bytes_to_frames(runtime, curptr);
675 }
676 snd_printd("atiixp: invalid DMA pointer read 0x%x (buf=%x)\n",
677 readl(chip->remap_addr + dma->ops->dt_cur), dma->buf_addr);
678 return 0;
679 }
680
681 /*
682 * XRUN detected, and stop the PCM substream
683 */
684 static void snd_atiixp_xrun_dma(struct atiixp *chip, struct atiixp_dma *dma)
685 {
686 if (! dma->substream || ! dma->running)
687 return;
688 snd_printdd("atiixp: XRUN detected (DMA %d)\n", dma->ops->type);
689 snd_pcm_stop(dma->substream, SNDRV_PCM_STATE_XRUN);
690 }
691
692 /*
693 * the period ack. update the substream.
694 */
695 static void snd_atiixp_update_dma(struct atiixp *chip, struct atiixp_dma *dma)
696 {
697 if (! dma->substream || ! dma->running)
698 return;
699 snd_pcm_period_elapsed(dma->substream);
700 }
701
702 /* set BUS_BUSY interrupt bit if any DMA is running */
703 /* call with spinlock held */
704 static void snd_atiixp_check_bus_busy(struct atiixp *chip)
705 {
706 unsigned int bus_busy;
707 if (atiixp_read(chip, CMD) & (ATI_REG_CMD_SEND_EN |
708 ATI_REG_CMD_RECEIVE_EN |
709 ATI_REG_CMD_SPDF_OUT_EN))
710 bus_busy = ATI_REG_IER_SET_BUS_BUSY;
711 else
712 bus_busy = 0;
713 atiixp_update(chip, IER, ATI_REG_IER_SET_BUS_BUSY, bus_busy);
714 }
715
716 /* common trigger callback
717 * calling the lowlevel callbacks in it
718 */
719 static int snd_atiixp_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
720 {
721 struct atiixp *chip = snd_pcm_substream_chip(substream);
722 struct atiixp_dma *dma = substream->runtime->private_data;
723 int err = 0;
724
725 snd_assert(dma->ops->enable_transfer && dma->ops->flush_dma, return -EINVAL);
726
727 spin_lock(&chip->reg_lock);
728 switch (cmd) {
729 case SNDRV_PCM_TRIGGER_START:
730 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
731 case SNDRV_PCM_TRIGGER_RESUME:
732 dma->ops->enable_transfer(chip, 1);
733 dma->running = 1;
734 dma->suspended = 0;
735 break;
736 case SNDRV_PCM_TRIGGER_STOP:
737 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
738 case SNDRV_PCM_TRIGGER_SUSPEND:
739 dma->ops->enable_transfer(chip, 0);
740 dma->running = 0;
741 dma->suspended = cmd == SNDRV_PCM_TRIGGER_SUSPEND;
742 break;
743 default:
744 err = -EINVAL;
745 break;
746 }
747 if (! err) {
748 snd_atiixp_check_bus_busy(chip);
749 if (cmd == SNDRV_PCM_TRIGGER_STOP) {
750 dma->ops->flush_dma(chip);
751 snd_atiixp_check_bus_busy(chip);
752 }
753 }
754 spin_unlock(&chip->reg_lock);
755 return err;
756 }
757
758
759 /*
760 * lowlevel callbacks for each DMA type
761 *
762 * every callback is supposed to be called in chip->reg_lock spinlock
763 */
764
765 /* flush FIFO of analog OUT DMA */
766 static void atiixp_out_flush_dma(struct atiixp *chip)
767 {
768 atiixp_write(chip, FIFO_FLUSH, ATI_REG_FIFO_OUT_FLUSH);
769 }
770
771 /* enable/disable analog OUT DMA */
772 static void atiixp_out_enable_dma(struct atiixp *chip, int on)
773 {
774 unsigned int data;
775 data = atiixp_read(chip, CMD);
776 if (on) {
777 if (data & ATI_REG_CMD_OUT_DMA_EN)
778 return;
779 atiixp_out_flush_dma(chip);
780 data |= ATI_REG_CMD_OUT_DMA_EN;
781 } else
782 data &= ~ATI_REG_CMD_OUT_DMA_EN;
783 atiixp_write(chip, CMD, data);
784 }
785
786 /* start/stop transfer over OUT DMA */
787 static void atiixp_out_enable_transfer(struct atiixp *chip, int on)
788 {
789 atiixp_update(chip, CMD, ATI_REG_CMD_SEND_EN,
790 on ? ATI_REG_CMD_SEND_EN : 0);
791 }
792
793 /* enable/disable analog IN DMA */
794 static void atiixp_in_enable_dma(struct atiixp *chip, int on)
795 {
796 atiixp_update(chip, CMD, ATI_REG_CMD_IN_DMA_EN,
797 on ? ATI_REG_CMD_IN_DMA_EN : 0);
798 }
799
800 /* start/stop analog IN DMA */
801 static void atiixp_in_enable_transfer(struct atiixp *chip, int on)
802 {
803 if (on) {
804 unsigned int data = atiixp_read(chip, CMD);
805 if (! (data & ATI_REG_CMD_RECEIVE_EN)) {
806 data |= ATI_REG_CMD_RECEIVE_EN;
807 #if 0 /* FIXME: this causes the endless loop */
808 /* wait until slot 3/4 are finished */
809 while ((atiixp_read(chip, COUNTER) &
810 ATI_REG_COUNTER_SLOT) != 5)
811 ;
812 #endif
813 atiixp_write(chip, CMD, data);
814 }
815 } else
816 atiixp_update(chip, CMD, ATI_REG_CMD_RECEIVE_EN, 0);
817 }
818
819 /* flush FIFO of analog IN DMA */
820 static void atiixp_in_flush_dma(struct atiixp *chip)
821 {
822 atiixp_write(chip, FIFO_FLUSH, ATI_REG_FIFO_IN_FLUSH);
823 }
824
825 /* enable/disable SPDIF OUT DMA */
826 static void atiixp_spdif_enable_dma(struct atiixp *chip, int on)
827 {
828 atiixp_update(chip, CMD, ATI_REG_CMD_SPDF_DMA_EN,
829 on ? ATI_REG_CMD_SPDF_DMA_EN : 0);
830 }
831
832 /* start/stop SPDIF OUT DMA */
833 static void atiixp_spdif_enable_transfer(struct atiixp *chip, int on)
834 {
835 unsigned int data;
836 data = atiixp_read(chip, CMD);
837 if (on)
838 data |= ATI_REG_CMD_SPDF_OUT_EN;
839 else
840 data &= ~ATI_REG_CMD_SPDF_OUT_EN;
841 atiixp_write(chip, CMD, data);
842 }
843
844 /* flush FIFO of SPDIF OUT DMA */
845 static void atiixp_spdif_flush_dma(struct atiixp *chip)
846 {
847 int timeout;
848
849 /* DMA off, transfer on */
850 atiixp_spdif_enable_dma(chip, 0);
851 atiixp_spdif_enable_transfer(chip, 1);
852
853 timeout = 100;
854 do {
855 if (! (atiixp_read(chip, SPDF_DMA_DT_SIZE) & ATI_REG_DMA_FIFO_USED))
856 break;
857 udelay(1);
858 } while (timeout-- > 0);
859
860 atiixp_spdif_enable_transfer(chip, 0);
861 }
862
863 /* set up slots and formats for SPDIF OUT */
864 static int snd_atiixp_spdif_prepare(struct snd_pcm_substream *substream)
865 {
866 struct atiixp *chip = snd_pcm_substream_chip(substream);
867
868 spin_lock_irq(&chip->reg_lock);
869 if (chip->spdif_over_aclink) {
870 unsigned int data;
871 /* enable slots 10/11 */
872 atiixp_update(chip, CMD, ATI_REG_CMD_SPDF_CONFIG_MASK,
873 ATI_REG_CMD_SPDF_CONFIG_01);
874 data = atiixp_read(chip, OUT_DMA_SLOT) & ~ATI_REG_OUT_DMA_SLOT_MASK;
875 data |= ATI_REG_OUT_DMA_SLOT_BIT(10) |
876 ATI_REG_OUT_DMA_SLOT_BIT(11);
877 data |= 0x04 << ATI_REG_OUT_DMA_THRESHOLD_SHIFT;
878 atiixp_write(chip, OUT_DMA_SLOT, data);
879 atiixp_update(chip, CMD, ATI_REG_CMD_INTERLEAVE_OUT,
880 substream->runtime->format == SNDRV_PCM_FORMAT_S16_LE ?
881 ATI_REG_CMD_INTERLEAVE_OUT : 0);
882 } else {
883 atiixp_update(chip, CMD, ATI_REG_CMD_SPDF_CONFIG_MASK, 0);
884 atiixp_update(chip, CMD, ATI_REG_CMD_INTERLEAVE_SPDF, 0);
885 }
886 spin_unlock_irq(&chip->reg_lock);
887 return 0;
888 }
889
890 /* set up slots and formats for analog OUT */
891 static int snd_atiixp_playback_prepare(struct snd_pcm_substream *substream)
892 {
893 struct atiixp *chip = snd_pcm_substream_chip(substream);
894 unsigned int data;
895
896 spin_lock_irq(&chip->reg_lock);
897 data = atiixp_read(chip, OUT_DMA_SLOT) & ~ATI_REG_OUT_DMA_SLOT_MASK;
898 switch (substream->runtime->channels) {
899 case 8:
900 data |= ATI_REG_OUT_DMA_SLOT_BIT(10) |
901 ATI_REG_OUT_DMA_SLOT_BIT(11);
902 /* fallthru */
903 case 6:
904 data |= ATI_REG_OUT_DMA_SLOT_BIT(7) |
905 ATI_REG_OUT_DMA_SLOT_BIT(8);
906 /* fallthru */
907 case 4:
908 data |= ATI_REG_OUT_DMA_SLOT_BIT(6) |
909 ATI_REG_OUT_DMA_SLOT_BIT(9);
910 /* fallthru */
911 default:
912 data |= ATI_REG_OUT_DMA_SLOT_BIT(3) |
913 ATI_REG_OUT_DMA_SLOT_BIT(4);
914 break;
915 }
916
917 /* set output threshold */
918 data |= 0x04 << ATI_REG_OUT_DMA_THRESHOLD_SHIFT;
919 atiixp_write(chip, OUT_DMA_SLOT, data);
920
921 atiixp_update(chip, CMD, ATI_REG_CMD_INTERLEAVE_OUT,
922 substream->runtime->format == SNDRV_PCM_FORMAT_S16_LE ?
923 ATI_REG_CMD_INTERLEAVE_OUT : 0);
924
925 /*
926 * enable 6 channel re-ordering bit if needed
927 */
928 atiixp_update(chip, 6CH_REORDER, ATI_REG_6CH_REORDER_EN,
929 substream->runtime->channels >= 6 ? ATI_REG_6CH_REORDER_EN: 0);
930
931 spin_unlock_irq(&chip->reg_lock);
932 return 0;
933 }
934
935 /* set up slots and formats for analog IN */
936 static int snd_atiixp_capture_prepare(struct snd_pcm_substream *substream)
937 {
938 struct atiixp *chip = snd_pcm_substream_chip(substream);
939
940 spin_lock_irq(&chip->reg_lock);
941 atiixp_update(chip, CMD, ATI_REG_CMD_INTERLEAVE_IN,
942 substream->runtime->format == SNDRV_PCM_FORMAT_S16_LE ?
943 ATI_REG_CMD_INTERLEAVE_IN : 0);
944 spin_unlock_irq(&chip->reg_lock);
945 return 0;
946 }
947
948 /*
949 * hw_params - allocate the buffer and set up buffer descriptors
950 */
951 static int snd_atiixp_pcm_hw_params(struct snd_pcm_substream *substream,
952 struct snd_pcm_hw_params *hw_params)
953 {
954 struct atiixp *chip = snd_pcm_substream_chip(substream);
955 struct atiixp_dma *dma = substream->runtime->private_data;
956 int err;
957
958 err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
959 if (err < 0)
960 return err;
961 dma->buf_addr = substream->runtime->dma_addr;
962 dma->buf_bytes = params_buffer_bytes(hw_params);
963
964 err = atiixp_build_dma_packets(chip, dma, substream,
965 params_periods(hw_params),
966 params_period_bytes(hw_params));
967 if (err < 0)
968 return err;
969
970 if (dma->ac97_pcm_type >= 0) {
971 struct ac97_pcm *pcm = chip->pcms[dma->ac97_pcm_type];
972 /* PCM is bound to AC97 codec(s)
973 * set up the AC97 codecs
974 */
975 if (dma->pcm_open_flag) {
976 snd_ac97_pcm_close(pcm);
977 dma->pcm_open_flag = 0;
978 }
979 err = snd_ac97_pcm_open(pcm, params_rate(hw_params),
980 params_channels(hw_params),
981 pcm->r[0].slots);
982 if (err >= 0)
983 dma->pcm_open_flag = 1;
984 }
985
986 return err;
987 }
988
989 static int snd_atiixp_pcm_hw_free(struct snd_pcm_substream *substream)
990 {
991 struct atiixp *chip = snd_pcm_substream_chip(substream);
992 struct atiixp_dma *dma = substream->runtime->private_data;
993
994 if (dma->pcm_open_flag) {
995 struct ac97_pcm *pcm = chip->pcms[dma->ac97_pcm_type];
996 snd_ac97_pcm_close(pcm);
997 dma->pcm_open_flag = 0;
998 }
999 atiixp_clear_dma_packets(chip, dma, substream);
1000 snd_pcm_lib_free_pages(substream);
1001 return 0;
1002 }
1003
1004
1005 /*
1006 * pcm hardware definition, identical for all DMA types
1007 */
1008 static struct snd_pcm_hardware snd_atiixp_pcm_hw =
1009 {
1010 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1011 SNDRV_PCM_INFO_BLOCK_TRANSFER |
1012 SNDRV_PCM_INFO_PAUSE |
1013 SNDRV_PCM_INFO_RESUME |
1014 SNDRV_PCM_INFO_MMAP_VALID),
1015 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE,
1016 .rates = SNDRV_PCM_RATE_48000,
1017 .rate_min = 48000,
1018 .rate_max = 48000,
1019 .channels_min = 2,
1020 .channels_max = 2,
1021 .buffer_bytes_max = 256 * 1024,
1022 .period_bytes_min = 32,
1023 .period_bytes_max = 128 * 1024,
1024 .periods_min = 2,
1025 .periods_max = ATI_MAX_DESCRIPTORS,
1026 };
1027
1028 static int snd_atiixp_pcm_open(struct snd_pcm_substream *substream,
1029 struct atiixp_dma *dma, int pcm_type)
1030 {
1031 struct atiixp *chip = snd_pcm_substream_chip(substream);
1032 struct snd_pcm_runtime *runtime = substream->runtime;
1033 int err;
1034
1035 snd_assert(dma->ops && dma->ops->enable_dma, return -EINVAL);
1036
1037 if (dma->opened)
1038 return -EBUSY;
1039 dma->substream = substream;
1040 runtime->hw = snd_atiixp_pcm_hw;
1041 dma->ac97_pcm_type = pcm_type;
1042 if (pcm_type >= 0) {
1043 runtime->hw.rates = chip->pcms[pcm_type]->rates;
1044 snd_pcm_limit_hw_rates(runtime);
1045 } else {
1046 /* direct SPDIF */
1047 runtime->hw.formats = SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE;
1048 }
1049 if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
1050 return err;
1051 runtime->private_data = dma;
1052
1053 /* enable DMA bits */
1054 spin_lock_irq(&chip->reg_lock);
1055 dma->ops->enable_dma(chip, 1);
1056 spin_unlock_irq(&chip->reg_lock);
1057 dma->opened = 1;
1058
1059 return 0;
1060 }
1061
1062 static int snd_atiixp_pcm_close(struct snd_pcm_substream *substream,
1063 struct atiixp_dma *dma)
1064 {
1065 struct atiixp *chip = snd_pcm_substream_chip(substream);
1066 /* disable DMA bits */
1067 snd_assert(dma->ops && dma->ops->enable_dma, return -EINVAL);
1068 spin_lock_irq(&chip->reg_lock);
1069 dma->ops->enable_dma(chip, 0);
1070 spin_unlock_irq(&chip->reg_lock);
1071 dma->substream = NULL;
1072 dma->opened = 0;
1073 return 0;
1074 }
1075
1076 /*
1077 */
1078 static int snd_atiixp_playback_open(struct snd_pcm_substream *substream)
1079 {
1080 struct atiixp *chip = snd_pcm_substream_chip(substream);
1081 int err;
1082
1083 mutex_lock(&chip->open_mutex);
1084 err = snd_atiixp_pcm_open(substream, &chip->dmas[ATI_DMA_PLAYBACK], 0);
1085 mutex_unlock(&chip->open_mutex);
1086 if (err < 0)
1087 return err;
1088 substream->runtime->hw.channels_max = chip->max_channels;
1089 if (chip->max_channels > 2)
1090 /* channels must be even */
1091 snd_pcm_hw_constraint_step(substream->runtime, 0,
1092 SNDRV_PCM_HW_PARAM_CHANNELS, 2);
1093 return 0;
1094 }
1095
1096 static int snd_atiixp_playback_close(struct snd_pcm_substream *substream)
1097 {
1098 struct atiixp *chip = snd_pcm_substream_chip(substream);
1099 int err;
1100 mutex_lock(&chip->open_mutex);
1101 err = snd_atiixp_pcm_close(substream, &chip->dmas[ATI_DMA_PLAYBACK]);
1102 mutex_unlock(&chip->open_mutex);
1103 return err;
1104 }
1105
1106 static int snd_atiixp_capture_open(struct snd_pcm_substream *substream)
1107 {
1108 struct atiixp *chip = snd_pcm_substream_chip(substream);
1109 return snd_atiixp_pcm_open(substream, &chip->dmas[ATI_DMA_CAPTURE], 1);
1110 }
1111
1112 static int snd_atiixp_capture_close(struct snd_pcm_substream *substream)
1113 {
1114 struct atiixp *chip = snd_pcm_substream_chip(substream);
1115 return snd_atiixp_pcm_close(substream, &chip->dmas[ATI_DMA_CAPTURE]);
1116 }
1117
1118 static int snd_atiixp_spdif_open(struct snd_pcm_substream *substream)
1119 {
1120 struct atiixp *chip = snd_pcm_substream_chip(substream);
1121 int err;
1122 mutex_lock(&chip->open_mutex);
1123 if (chip->spdif_over_aclink) /* share DMA_PLAYBACK */
1124 err = snd_atiixp_pcm_open(substream, &chip->dmas[ATI_DMA_PLAYBACK], 2);
1125 else
1126 err = snd_atiixp_pcm_open(substream, &chip->dmas[ATI_DMA_SPDIF], -1);
1127 mutex_unlock(&chip->open_mutex);
1128 return err;
1129 }
1130
1131 static int snd_atiixp_spdif_close(struct snd_pcm_substream *substream)
1132 {
1133 struct atiixp *chip = snd_pcm_substream_chip(substream);
1134 int err;
1135 mutex_lock(&chip->open_mutex);
1136 if (chip->spdif_over_aclink)
1137 err = snd_atiixp_pcm_close(substream, &chip->dmas[ATI_DMA_PLAYBACK]);
1138 else
1139 err = snd_atiixp_pcm_close(substream, &chip->dmas[ATI_DMA_SPDIF]);
1140 mutex_unlock(&chip->open_mutex);
1141 return err;
1142 }
1143
1144 /* AC97 playback */
1145 static struct snd_pcm_ops snd_atiixp_playback_ops = {
1146 .open = snd_atiixp_playback_open,
1147 .close = snd_atiixp_playback_close,
1148 .ioctl = snd_pcm_lib_ioctl,
1149 .hw_params = snd_atiixp_pcm_hw_params,
1150 .hw_free = snd_atiixp_pcm_hw_free,
1151 .prepare = snd_atiixp_playback_prepare,
1152 .trigger = snd_atiixp_pcm_trigger,
1153 .pointer = snd_atiixp_pcm_pointer,
1154 };
1155
1156 /* AC97 capture */
1157 static struct snd_pcm_ops snd_atiixp_capture_ops = {
1158 .open = snd_atiixp_capture_open,
1159 .close = snd_atiixp_capture_close,
1160 .ioctl = snd_pcm_lib_ioctl,
1161 .hw_params = snd_atiixp_pcm_hw_params,
1162 .hw_free = snd_atiixp_pcm_hw_free,
1163 .prepare = snd_atiixp_capture_prepare,
1164 .trigger = snd_atiixp_pcm_trigger,
1165 .pointer = snd_atiixp_pcm_pointer,
1166 };
1167
1168 /* SPDIF playback */
1169 static struct snd_pcm_ops snd_atiixp_spdif_ops = {
1170 .open = snd_atiixp_spdif_open,
1171 .close = snd_atiixp_spdif_close,
1172 .ioctl = snd_pcm_lib_ioctl,
1173 .hw_params = snd_atiixp_pcm_hw_params,
1174 .hw_free = snd_atiixp_pcm_hw_free,
1175 .prepare = snd_atiixp_spdif_prepare,
1176 .trigger = snd_atiixp_pcm_trigger,
1177 .pointer = snd_atiixp_pcm_pointer,
1178 };
1179
1180 static struct ac97_pcm atiixp_pcm_defs[] __devinitdata = {
1181 /* front PCM */
1182 {
1183 .exclusive = 1,
1184 .r = { {
1185 .slots = (1 << AC97_SLOT_PCM_LEFT) |
1186 (1 << AC97_SLOT_PCM_RIGHT) |
1187 (1 << AC97_SLOT_PCM_CENTER) |
1188 (1 << AC97_SLOT_PCM_SLEFT) |
1189 (1 << AC97_SLOT_PCM_SRIGHT) |
1190 (1 << AC97_SLOT_LFE)
1191 }
1192 }
1193 },
1194 /* PCM IN #1 */
1195 {
1196 .stream = 1,
1197 .exclusive = 1,
1198 .r = { {
1199 .slots = (1 << AC97_SLOT_PCM_LEFT) |
1200 (1 << AC97_SLOT_PCM_RIGHT)
1201 }
1202 }
1203 },
1204 /* S/PDIF OUT (optional) */
1205 {
1206 .exclusive = 1,
1207 .spdif = 1,
1208 .r = { {
1209 .slots = (1 << AC97_SLOT_SPDIF_LEFT2) |
1210 (1 << AC97_SLOT_SPDIF_RIGHT2)
1211 }
1212 }
1213 },
1214 };
1215
1216 static struct atiixp_dma_ops snd_atiixp_playback_dma_ops = {
1217 .type = ATI_DMA_PLAYBACK,
1218 .llp_offset = ATI_REG_OUT_DMA_LINKPTR,
1219 .dt_cur = ATI_REG_OUT_DMA_DT_CUR,
1220 .enable_dma = atiixp_out_enable_dma,
1221 .enable_transfer = atiixp_out_enable_transfer,
1222 .flush_dma = atiixp_out_flush_dma,
1223 };
1224
1225 static struct atiixp_dma_ops snd_atiixp_capture_dma_ops = {
1226 .type = ATI_DMA_CAPTURE,
1227 .llp_offset = ATI_REG_IN_DMA_LINKPTR,
1228 .dt_cur = ATI_REG_IN_DMA_DT_CUR,
1229 .enable_dma = atiixp_in_enable_dma,
1230 .enable_transfer = atiixp_in_enable_transfer,
1231 .flush_dma = atiixp_in_flush_dma,
1232 };
1233
1234 static struct atiixp_dma_ops snd_atiixp_spdif_dma_ops = {
1235 .type = ATI_DMA_SPDIF,
1236 .llp_offset = ATI_REG_SPDF_DMA_LINKPTR,
1237 .dt_cur = ATI_REG_SPDF_DMA_DT_CUR,
1238 .enable_dma = atiixp_spdif_enable_dma,
1239 .enable_transfer = atiixp_spdif_enable_transfer,
1240 .flush_dma = atiixp_spdif_flush_dma,
1241 };
1242
1243
1244 static int __devinit snd_atiixp_pcm_new(struct atiixp *chip)
1245 {
1246 struct snd_pcm *pcm;
1247 struct snd_ac97_bus *pbus = chip->ac97_bus;
1248 int err, i, num_pcms;
1249
1250 /* initialize constants */
1251 chip->dmas[ATI_DMA_PLAYBACK].ops = &snd_atiixp_playback_dma_ops;
1252 chip->dmas[ATI_DMA_CAPTURE].ops = &snd_atiixp_capture_dma_ops;
1253 if (! chip->spdif_over_aclink)
1254 chip->dmas[ATI_DMA_SPDIF].ops = &snd_atiixp_spdif_dma_ops;
1255
1256 /* assign AC97 pcm */
1257 if (chip->spdif_over_aclink)
1258 num_pcms = 3;
1259 else
1260 num_pcms = 2;
1261 err = snd_ac97_pcm_assign(pbus, num_pcms, atiixp_pcm_defs);
1262 if (err < 0)
1263 return err;
1264 for (i = 0; i < num_pcms; i++)
1265 chip->pcms[i] = &pbus->pcms[i];
1266
1267 chip->max_channels = 2;
1268 if (pbus->pcms[ATI_PCM_OUT].r[0].slots & (1 << AC97_SLOT_PCM_SLEFT)) {
1269 if (pbus->pcms[ATI_PCM_OUT].r[0].slots & (1 << AC97_SLOT_LFE))
1270 chip->max_channels = 6;
1271 else
1272 chip->max_channels = 4;
1273 }
1274
1275 /* PCM #0: analog I/O */
1276 err = snd_pcm_new(chip->card, "ATI IXP AC97",
1277 ATI_PCMDEV_ANALOG, 1, 1, &pcm);
1278 if (err < 0)
1279 return err;
1280 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_atiixp_playback_ops);
1281 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_atiixp_capture_ops);
1282 pcm->private_data = chip;
1283 strcpy(pcm->name, "ATI IXP AC97");
1284 chip->pcmdevs[ATI_PCMDEV_ANALOG] = pcm;
1285
1286 snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1287 snd_dma_pci_data(chip->pci),
1288 64*1024, 128*1024);
1289
1290 /* no SPDIF support on codec? */
1291 if (chip->pcms[ATI_PCM_SPDIF] && ! chip->pcms[ATI_PCM_SPDIF]->rates)
1292 return 0;
1293
1294 /* FIXME: non-48k sample rate doesn't work on my test machine with AD1888 */
1295 if (chip->pcms[ATI_PCM_SPDIF])
1296 chip->pcms[ATI_PCM_SPDIF]->rates = SNDRV_PCM_RATE_48000;
1297
1298 /* PCM #1: spdif playback */
1299 err = snd_pcm_new(chip->card, "ATI IXP IEC958",
1300 ATI_PCMDEV_DIGITAL, 1, 0, &pcm);
1301 if (err < 0)
1302 return err;
1303 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_atiixp_spdif_ops);
1304 pcm->private_data = chip;
1305 if (chip->spdif_over_aclink)
1306 strcpy(pcm->name, "ATI IXP IEC958 (AC97)");
1307 else
1308 strcpy(pcm->name, "ATI IXP IEC958 (Direct)");
1309 chip->pcmdevs[ATI_PCMDEV_DIGITAL] = pcm;
1310
1311 snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1312 snd_dma_pci_data(chip->pci),
1313 64*1024, 128*1024);
1314
1315 /* pre-select AC97 SPDIF slots 10/11 */
1316 for (i = 0; i < NUM_ATI_CODECS; i++) {
1317 if (chip->ac97[i])
1318 snd_ac97_update_bits(chip->ac97[i],
1319 AC97_EXTENDED_STATUS,
1320 0x03 << 4, 0x03 << 4);
1321 }
1322
1323 return 0;
1324 }
1325
1326
1327
1328 /*
1329 * interrupt handler
1330 */
1331 static irqreturn_t snd_atiixp_interrupt(int irq, void *dev_id)
1332 {
1333 struct atiixp *chip = dev_id;
1334 unsigned int status;
1335
1336 status = atiixp_read(chip, ISR);
1337
1338 if (! status)
1339 return IRQ_NONE;
1340
1341 /* process audio DMA */
1342 if (status & ATI_REG_ISR_OUT_XRUN)
1343 snd_atiixp_xrun_dma(chip, &chip->dmas[ATI_DMA_PLAYBACK]);
1344 else if (status & ATI_REG_ISR_OUT_STATUS)
1345 snd_atiixp_update_dma(chip, &chip->dmas[ATI_DMA_PLAYBACK]);
1346 if (status & ATI_REG_ISR_IN_XRUN)
1347 snd_atiixp_xrun_dma(chip, &chip->dmas[ATI_DMA_CAPTURE]);
1348 else if (status & ATI_REG_ISR_IN_STATUS)
1349 snd_atiixp_update_dma(chip, &chip->dmas[ATI_DMA_CAPTURE]);
1350 if (! chip->spdif_over_aclink) {
1351 if (status & ATI_REG_ISR_SPDF_XRUN)
1352 snd_atiixp_xrun_dma(chip, &chip->dmas[ATI_DMA_SPDIF]);
1353 else if (status & ATI_REG_ISR_SPDF_STATUS)
1354 snd_atiixp_update_dma(chip, &chip->dmas[ATI_DMA_SPDIF]);
1355 }
1356
1357 /* for codec detection */
1358 if (status & CODEC_CHECK_BITS) {
1359 unsigned int detected;
1360 detected = status & CODEC_CHECK_BITS;
1361 spin_lock(&chip->reg_lock);
1362 chip->codec_not_ready_bits |= detected;
1363 atiixp_update(chip, IER, detected, 0); /* disable the detected irqs */
1364 spin_unlock(&chip->reg_lock);
1365 }
1366
1367 /* ack */
1368 atiixp_write(chip, ISR, status);
1369
1370 return IRQ_HANDLED;
1371 }
1372
1373
1374 /*
1375 * ac97 mixer section
1376 */
1377
1378 static struct ac97_quirk ac97_quirks[] __devinitdata = {
1379 {
1380 .subvendor = 0x103c,
1381 .subdevice = 0x006b,
1382 .name = "HP Pavilion ZV5030US",
1383 .type = AC97_TUNE_MUTE_LED
1384 },
1385 {
1386 .subvendor = 0x103c,
1387 .subdevice = 0x308b,
1388 .name = "HP nx6125",
1389 .type = AC97_TUNE_MUTE_LED
1390 },
1391 { } /* terminator */
1392 };
1393
1394 static int __devinit snd_atiixp_mixer_new(struct atiixp *chip, int clock,
1395 const char *quirk_override)
1396 {
1397 struct snd_ac97_bus *pbus;
1398 struct snd_ac97_template ac97;
1399 int i, err;
1400 int codec_count;
1401 static struct snd_ac97_bus_ops ops = {
1402 .write = snd_atiixp_ac97_write,
1403 .read = snd_atiixp_ac97_read,
1404 };
1405 static unsigned int codec_skip[NUM_ATI_CODECS] = {
1406 ATI_REG_ISR_CODEC0_NOT_READY,
1407 ATI_REG_ISR_CODEC1_NOT_READY,
1408 ATI_REG_ISR_CODEC2_NOT_READY,
1409 };
1410
1411 if (snd_atiixp_codec_detect(chip) < 0)
1412 return -ENXIO;
1413
1414 if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &pbus)) < 0)
1415 return err;
1416 pbus->clock = clock;
1417 chip->ac97_bus = pbus;
1418
1419 codec_count = 0;
1420 for (i = 0; i < NUM_ATI_CODECS; i++) {
1421 if (chip->codec_not_ready_bits & codec_skip[i])
1422 continue;
1423 memset(&ac97, 0, sizeof(ac97));
1424 ac97.private_data = chip;
1425 ac97.pci = chip->pci;
1426 ac97.num = i;
1427 ac97.scaps = AC97_SCAP_SKIP_MODEM | AC97_SCAP_POWER_SAVE;
1428 if (! chip->spdif_over_aclink)
1429 ac97.scaps |= AC97_SCAP_NO_SPDIF;
1430 if ((err = snd_ac97_mixer(pbus, &ac97, &chip->ac97[i])) < 0) {
1431 chip->ac97[i] = NULL; /* to be sure */
1432 snd_printdd("atiixp: codec %d not available for audio\n", i);
1433 continue;
1434 }
1435 codec_count++;
1436 }
1437
1438 if (! codec_count) {
1439 snd_printk(KERN_ERR "atiixp: no codec available\n");
1440 return -ENODEV;
1441 }
1442
1443 snd_ac97_tune_hardware(chip->ac97[0], ac97_quirks, quirk_override);
1444
1445 return 0;
1446 }
1447
1448
1449 #ifdef CONFIG_PM
1450 /*
1451 * power management
1452 */
1453 static int snd_atiixp_suspend(struct pci_dev *pci, pm_message_t state)
1454 {
1455 struct snd_card *card = pci_get_drvdata(pci);
1456 struct atiixp *chip = card->private_data;
1457 int i;
1458
1459 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
1460 for (i = 0; i < NUM_ATI_PCMDEVS; i++)
1461 if (chip->pcmdevs[i]) {
1462 struct atiixp_dma *dma = &chip->dmas[i];
1463 if (dma->substream && dma->running)
1464 dma->saved_curptr = readl(chip->remap_addr +
1465 dma->ops->dt_cur);
1466 snd_pcm_suspend_all(chip->pcmdevs[i]);
1467 }
1468 for (i = 0; i < NUM_ATI_CODECS; i++)
1469 snd_ac97_suspend(chip->ac97[i]);
1470 snd_atiixp_aclink_down(chip);
1471 snd_atiixp_chip_stop(chip);
1472
1473 pci_disable_device(pci);
1474 pci_save_state(pci);
1475 pci_set_power_state(pci, pci_choose_state(pci, state));
1476 return 0;
1477 }
1478
1479 static int snd_atiixp_resume(struct pci_dev *pci)
1480 {
1481 struct snd_card *card = pci_get_drvdata(pci);
1482 struct atiixp *chip = card->private_data;
1483 int i;
1484
1485 pci_set_power_state(pci, PCI_D0);
1486 pci_restore_state(pci);
1487 if (pci_enable_device(pci) < 0) {
1488 printk(KERN_ERR "atiixp: pci_enable_device failed, "
1489 "disabling device\n");
1490 snd_card_disconnect(card);
1491 return -EIO;
1492 }
1493 pci_set_master(pci);
1494
1495 snd_atiixp_aclink_reset(chip);
1496 snd_atiixp_chip_start(chip);
1497
1498 for (i = 0; i < NUM_ATI_CODECS; i++)
1499 snd_ac97_resume(chip->ac97[i]);
1500
1501 for (i = 0; i < NUM_ATI_PCMDEVS; i++)
1502 if (chip->pcmdevs[i]) {
1503 struct atiixp_dma *dma = &chip->dmas[i];
1504 if (dma->substream && dma->suspended) {
1505 dma->ops->enable_dma(chip, 1);
1506 dma->substream->ops->prepare(dma->substream);
1507 writel((u32)dma->desc_buf.addr | ATI_REG_LINKPTR_EN,
1508 chip->remap_addr + dma->ops->llp_offset);
1509 writel(dma->saved_curptr, chip->remap_addr +
1510 dma->ops->dt_cur);
1511 }
1512 }
1513
1514 snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1515 return 0;
1516 }
1517 #endif /* CONFIG_PM */
1518
1519
1520 #ifdef CONFIG_PROC_FS
1521 /*
1522 * proc interface for register dump
1523 */
1524
1525 static void snd_atiixp_proc_read(struct snd_info_entry *entry,
1526 struct snd_info_buffer *buffer)
1527 {
1528 struct atiixp *chip = entry->private_data;
1529 int i;
1530
1531 for (i = 0; i < 256; i += 4)
1532 snd_iprintf(buffer, "%02x: %08x\n", i, readl(chip->remap_addr + i));
1533 }
1534
1535 static void __devinit snd_atiixp_proc_init(struct atiixp *chip)
1536 {
1537 struct snd_info_entry *entry;
1538
1539 if (! snd_card_proc_new(chip->card, "atiixp", &entry))
1540 snd_info_set_text_ops(entry, chip, snd_atiixp_proc_read);
1541 }
1542 #else /* !CONFIG_PROC_FS */
1543 #define snd_atiixp_proc_init(chip)
1544 #endif
1545
1546
1547 /*
1548 * destructor
1549 */
1550
1551 static int snd_atiixp_free(struct atiixp *chip)
1552 {
1553 if (chip->irq < 0)
1554 goto __hw_end;
1555 snd_atiixp_chip_stop(chip);
1556 synchronize_irq(chip->irq);
1557 __hw_end:
1558 if (chip->irq >= 0)
1559 free_irq(chip->irq, chip);
1560 if (chip->remap_addr)
1561 iounmap(chip->remap_addr);
1562 pci_release_regions(chip->pci);
1563 pci_disable_device(chip->pci);
1564 kfree(chip);
1565 return 0;
1566 }
1567
1568 static int snd_atiixp_dev_free(struct snd_device *device)
1569 {
1570 struct atiixp *chip = device->device_data;
1571 return snd_atiixp_free(chip);
1572 }
1573
1574 /*
1575 * constructor for chip instance
1576 */
1577 static int __devinit snd_atiixp_create(struct snd_card *card,
1578 struct pci_dev *pci,
1579 struct atiixp **r_chip)
1580 {
1581 static struct snd_device_ops ops = {
1582 .dev_free = snd_atiixp_dev_free,
1583 };
1584 struct atiixp *chip;
1585 int err;
1586
1587 if ((err = pci_enable_device(pci)) < 0)
1588 return err;
1589
1590 chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1591 if (chip == NULL) {
1592 pci_disable_device(pci);
1593 return -ENOMEM;
1594 }
1595
1596 spin_lock_init(&chip->reg_lock);
1597 mutex_init(&chip->open_mutex);
1598 chip->card = card;
1599 chip->pci = pci;
1600 chip->irq = -1;
1601 if ((err = pci_request_regions(pci, "ATI IXP AC97")) < 0) {
1602 pci_disable_device(pci);
1603 kfree(chip);
1604 return err;
1605 }
1606 chip->addr = pci_resource_start(pci, 0);
1607 chip->remap_addr = ioremap_nocache(chip->addr, pci_resource_len(pci, 0));
1608 if (chip->remap_addr == NULL) {
1609 snd_printk(KERN_ERR "AC'97 space ioremap problem\n");
1610 snd_atiixp_free(chip);
1611 return -EIO;
1612 }
1613
1614 if (request_irq(pci->irq, snd_atiixp_interrupt, IRQF_SHARED,
1615 card->shortname, chip)) {
1616 snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq);
1617 snd_atiixp_free(chip);
1618 return -EBUSY;
1619 }
1620 chip->irq = pci->irq;
1621 pci_set_master(pci);
1622 synchronize_irq(chip->irq);
1623
1624 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1625 snd_atiixp_free(chip);
1626 return err;
1627 }
1628
1629 snd_card_set_dev(card, &pci->dev);
1630
1631 *r_chip = chip;
1632 return 0;
1633 }
1634
1635
1636 static int __devinit snd_atiixp_probe(struct pci_dev *pci,
1637 const struct pci_device_id *pci_id)
1638 {
1639 struct snd_card *card;
1640 struct atiixp *chip;
1641 int err;
1642
1643 card = snd_card_new(index, id, THIS_MODULE, 0);
1644 if (card == NULL)
1645 return -ENOMEM;
1646
1647 strcpy(card->driver, spdif_aclink ? "ATIIXP" : "ATIIXP-SPDMA");
1648 strcpy(card->shortname, "ATI IXP");
1649 if ((err = snd_atiixp_create(card, pci, &chip)) < 0)
1650 goto __error;
1651 card->private_data = chip;
1652
1653 if ((err = snd_atiixp_aclink_reset(chip)) < 0)
1654 goto __error;
1655
1656 chip->spdif_over_aclink = spdif_aclink;
1657
1658 if ((err = snd_atiixp_mixer_new(chip, ac97_clock, ac97_quirk)) < 0)
1659 goto __error;
1660
1661 if ((err = snd_atiixp_pcm_new(chip)) < 0)
1662 goto __error;
1663
1664 snd_atiixp_proc_init(chip);
1665
1666 snd_atiixp_chip_start(chip);
1667
1668 snprintf(card->longname, sizeof(card->longname),
1669 "%s rev %x with %s at %#lx, irq %i", card->shortname,
1670 pci->revision,
1671 chip->ac97[0] ? snd_ac97_get_short_name(chip->ac97[0]) : "?",
1672 chip->addr, chip->irq);
1673
1674 if ((err = snd_card_register(card)) < 0)
1675 goto __error;
1676
1677 pci_set_drvdata(pci, card);
1678 return 0;
1679
1680 __error:
1681 snd_card_free(card);
1682 return err;
1683 }
1684
1685 static void __devexit snd_atiixp_remove(struct pci_dev *pci)
1686 {
1687 snd_card_free(pci_get_drvdata(pci));
1688 pci_set_drvdata(pci, NULL);
1689 }
1690
1691 static struct pci_driver driver = {
1692 .name = "ATI IXP AC97 controller",
1693 .id_table = snd_atiixp_ids,
1694 .probe = snd_atiixp_probe,
1695 .remove = __devexit_p(snd_atiixp_remove),
1696 #ifdef CONFIG_PM
1697 .suspend = snd_atiixp_suspend,
1698 .resume = snd_atiixp_resume,
1699 #endif
1700 };
1701
1702
1703 static int __init alsa_card_atiixp_init(void)
1704 {
1705 return pci_register_driver(&driver);
1706 }
1707
1708 static void __exit alsa_card_atiixp_exit(void)
1709 {
1710 pci_unregister_driver(&driver);
1711 }
1712
1713 module_init(alsa_card_atiixp_init)
1714 module_exit(alsa_card_atiixp_exit)
Support for the Chinese Samsung S3C2440 based development boards