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[PATCH] UFS: inode->i_sem is not released in error path
[linux-2.6/verdex.git] / sound / pci / atiixp.c
blobb7217adaf1d76b69ee63685cce59d029ebecc77f
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 <sound/driver.h>
23 #include <asm/io.h>
24 #include <linux/delay.h>
25 #include <linux/interrupt.h>
26 #include <linux/init.h>
27 #include <linux/pci.h>
28 #include <linux/slab.h>
29 #include <linux/moduleparam.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
48 module_param(index, int, 0444);
49 MODULE_PARM_DESC(index, "Index value for ATI IXP controller.");
50 module_param(id, charp, 0444);
51 MODULE_PARM_DESC(id, "ID string for ATI IXP controller.");
52 module_param(ac97_clock, int, 0444);
53 MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz).");
54 module_param(ac97_quirk, charp, 0444);
55 MODULE_PARM_DESC(ac97_quirk, "AC'97 workaround for strange hardware.");
56 module_param(spdif_aclink, bool, 0444);
57 MODULE_PARM_DESC(spdif_aclink, "S/PDIF over AC-link.");
58
59 /* just for backward compatibility */
60 static int enable;
61 module_param(enable, bool, 0444);
62
63
64 /*
65 */
66
67 #define ATI_REG_ISR 0x00 /* interrupt source */
68 #define ATI_REG_ISR_IN_XRUN (1U<<0)
69 #define ATI_REG_ISR_IN_STATUS (1U<<1)
70 #define ATI_REG_ISR_OUT_XRUN (1U<<2)
71 #define ATI_REG_ISR_OUT_STATUS (1U<<3)
72 #define ATI_REG_ISR_SPDF_XRUN (1U<<4)
73 #define ATI_REG_ISR_SPDF_STATUS (1U<<5)
74 #define ATI_REG_ISR_PHYS_INTR (1U<<8)
75 #define ATI_REG_ISR_PHYS_MISMATCH (1U<<9)
76 #define ATI_REG_ISR_CODEC0_NOT_READY (1U<<10)
77 #define ATI_REG_ISR_CODEC1_NOT_READY (1U<<11)
78 #define ATI_REG_ISR_CODEC2_NOT_READY (1U<<12)
79 #define ATI_REG_ISR_NEW_FRAME (1U<<13)
80
81 #define ATI_REG_IER 0x04 /* interrupt enable */
82 #define ATI_REG_IER_IN_XRUN_EN (1U<<0)
83 #define ATI_REG_IER_IO_STATUS_EN (1U<<1)
84 #define ATI_REG_IER_OUT_XRUN_EN (1U<<2)
85 #define ATI_REG_IER_OUT_XRUN_COND (1U<<3)
86 #define ATI_REG_IER_SPDF_XRUN_EN (1U<<4)
87 #define ATI_REG_IER_SPDF_STATUS_EN (1U<<5)
88 #define ATI_REG_IER_PHYS_INTR_EN (1U<<8)
89 #define ATI_REG_IER_PHYS_MISMATCH_EN (1U<<9)
90 #define ATI_REG_IER_CODEC0_INTR_EN (1U<<10)
91 #define ATI_REG_IER_CODEC1_INTR_EN (1U<<11)
92 #define ATI_REG_IER_CODEC2_INTR_EN (1U<<12)
93 #define ATI_REG_IER_NEW_FRAME_EN (1U<<13) /* (RO */
94 #define ATI_REG_IER_SET_BUS_BUSY (1U<<14) /* (WO) audio is running */
95
96 #define ATI_REG_CMD 0x08 /* command */
97 #define ATI_REG_CMD_POWERDOWN (1U<<0)
98 #define ATI_REG_CMD_RECEIVE_EN (1U<<1)
99 #define ATI_REG_CMD_SEND_EN (1U<<2)
100 #define ATI_REG_CMD_STATUS_MEM (1U<<3)
101 #define ATI_REG_CMD_SPDF_OUT_EN (1U<<4)
102 #define ATI_REG_CMD_SPDF_STATUS_MEM (1U<<5)
103 #define ATI_REG_CMD_SPDF_THRESHOLD (3U<<6)
104 #define ATI_REG_CMD_SPDF_THRESHOLD_SHIFT 6
105 #define ATI_REG_CMD_IN_DMA_EN (1U<<8)
106 #define ATI_REG_CMD_OUT_DMA_EN (1U<<9)
107 #define ATI_REG_CMD_SPDF_DMA_EN (1U<<10)
108 #define ATI_REG_CMD_SPDF_OUT_STOPPED (1U<<11)
109 #define ATI_REG_CMD_SPDF_CONFIG_MASK (7U<<12)
110 #define ATI_REG_CMD_SPDF_CONFIG_34 (1U<<12)
111 #define ATI_REG_CMD_SPDF_CONFIG_78 (2U<<12)
112 #define ATI_REG_CMD_SPDF_CONFIG_69 (3U<<12)
113 #define ATI_REG_CMD_SPDF_CONFIG_01 (4U<<12)
114 #define ATI_REG_CMD_INTERLEAVE_SPDF (1U<<16)
115 #define ATI_REG_CMD_AUDIO_PRESENT (1U<<20)
116 #define ATI_REG_CMD_INTERLEAVE_IN (1U<<21)
117 #define ATI_REG_CMD_INTERLEAVE_OUT (1U<<22)
118 #define ATI_REG_CMD_LOOPBACK_EN (1U<<23)
119 #define ATI_REG_CMD_PACKED_DIS (1U<<24)
120 #define ATI_REG_CMD_BURST_EN (1U<<25)
121 #define ATI_REG_CMD_PANIC_EN (1U<<26)
122 #define ATI_REG_CMD_MODEM_PRESENT (1U<<27)
123 #define ATI_REG_CMD_ACLINK_ACTIVE (1U<<28)
124 #define ATI_REG_CMD_AC_SOFT_RESET (1U<<29)
125 #define ATI_REG_CMD_AC_SYNC (1U<<30)
126 #define ATI_REG_CMD_AC_RESET (1U<<31)
127
128 #define ATI_REG_PHYS_OUT_ADDR 0x0c
129 #define ATI_REG_PHYS_OUT_CODEC_MASK (3U<<0)
130 #define ATI_REG_PHYS_OUT_RW (1U<<2)
131 #define ATI_REG_PHYS_OUT_ADDR_EN (1U<<8)
132 #define ATI_REG_PHYS_OUT_ADDR_SHIFT 9
133 #define ATI_REG_PHYS_OUT_DATA_SHIFT 16
134
135 #define ATI_REG_PHYS_IN_ADDR 0x10
136 #define ATI_REG_PHYS_IN_READ_FLAG (1U<<8)
137 #define ATI_REG_PHYS_IN_ADDR_SHIFT 9
138 #define ATI_REG_PHYS_IN_DATA_SHIFT 16
139
140 #define ATI_REG_SLOTREQ 0x14
141
142 #define ATI_REG_COUNTER 0x18
143 #define ATI_REG_COUNTER_SLOT (3U<<0) /* slot # */
144 #define ATI_REG_COUNTER_BITCLOCK (31U<<8)
145
146 #define ATI_REG_IN_FIFO_THRESHOLD 0x1c
147
148 #define ATI_REG_IN_DMA_LINKPTR 0x20
149 #define ATI_REG_IN_DMA_DT_START 0x24 /* RO */
150 #define ATI_REG_IN_DMA_DT_NEXT 0x28 /* RO */
151 #define ATI_REG_IN_DMA_DT_CUR 0x2c /* RO */
152 #define ATI_REG_IN_DMA_DT_SIZE 0x30
153
154 #define ATI_REG_OUT_DMA_SLOT 0x34
155 #define ATI_REG_OUT_DMA_SLOT_BIT(x) (1U << ((x) - 3))
156 #define ATI_REG_OUT_DMA_SLOT_MASK 0x1ff
157 #define ATI_REG_OUT_DMA_THRESHOLD_MASK 0xf800
158 #define ATI_REG_OUT_DMA_THRESHOLD_SHIFT 11
159
160 #define ATI_REG_OUT_DMA_LINKPTR 0x38
161 #define ATI_REG_OUT_DMA_DT_START 0x3c /* RO */
162 #define ATI_REG_OUT_DMA_DT_NEXT 0x40 /* RO */
163 #define ATI_REG_OUT_DMA_DT_CUR 0x44 /* RO */
164 #define ATI_REG_OUT_DMA_DT_SIZE 0x48
165
166 #define ATI_REG_SPDF_CMD 0x4c
167 #define ATI_REG_SPDF_CMD_LFSR (1U<<4)
168 #define ATI_REG_SPDF_CMD_SINGLE_CH (1U<<5)
169 #define ATI_REG_SPDF_CMD_LFSR_ACC (0xff<<8) /* RO */
170
171 #define ATI_REG_SPDF_DMA_LINKPTR 0x50
172 #define ATI_REG_SPDF_DMA_DT_START 0x54 /* RO */
173 #define ATI_REG_SPDF_DMA_DT_NEXT 0x58 /* RO */
174 #define ATI_REG_SPDF_DMA_DT_CUR 0x5c /* RO */
175 #define ATI_REG_SPDF_DMA_DT_SIZE 0x60
176
177 #define ATI_REG_MODEM_MIRROR 0x7c
178 #define ATI_REG_AUDIO_MIRROR 0x80
179
180 #define ATI_REG_6CH_REORDER 0x84 /* reorder slots for 6ch */
181 #define ATI_REG_6CH_REORDER_EN (1U<<0) /* 3,4,7,8,6,9 -> 3,4,6,9,7,8 */
182
183 #define ATI_REG_FIFO_FLUSH 0x88
184 #define ATI_REG_FIFO_OUT_FLUSH (1U<<0)
185 #define ATI_REG_FIFO_IN_FLUSH (1U<<1)
186
187 /* LINKPTR */
188 #define ATI_REG_LINKPTR_EN (1U<<0)
189
190 /* [INT|OUT|SPDIF]_DMA_DT_SIZE */
191 #define ATI_REG_DMA_DT_SIZE (0xffffU<<0)
192 #define ATI_REG_DMA_FIFO_USED (0x1fU<<16)
193 #define ATI_REG_DMA_FIFO_FREE (0x1fU<<21)
194 #define ATI_REG_DMA_STATE (7U<<26)
195
196
197 #define ATI_MAX_DESCRIPTORS 256 /* max number of descriptor packets */
198
199
200 struct atiixp;
201
202 /*
203 * DMA packate descriptor
204 */
205
206 struct atiixp_dma_desc {
207 u32 addr; /* DMA buffer address */
208 u16 status; /* status bits */
209 u16 size; /* size of the packet in dwords */
210 u32 next; /* address of the next packet descriptor */
211 };
212
213 /*
214 * stream enum
215 */
216 enum { ATI_DMA_PLAYBACK, ATI_DMA_CAPTURE, ATI_DMA_SPDIF, NUM_ATI_DMAS }; /* DMAs */
217 enum { ATI_PCM_OUT, ATI_PCM_IN, ATI_PCM_SPDIF, NUM_ATI_PCMS }; /* AC97 pcm slots */
218 enum { ATI_PCMDEV_ANALOG, ATI_PCMDEV_DIGITAL, NUM_ATI_PCMDEVS }; /* pcm devices */
219
220 #define NUM_ATI_CODECS 3
221
222
223 /*
224 * constants and callbacks for each DMA type
225 */
226 struct atiixp_dma_ops {
227 int type; /* ATI_DMA_XXX */
228 unsigned int llp_offset; /* LINKPTR offset */
229 unsigned int dt_cur; /* DT_CUR offset */
230 /* called from open callback */
231 void (*enable_dma)(struct atiixp *chip, int on);
232 /* called from trigger (START/STOP) */
233 void (*enable_transfer)(struct atiixp *chip, int on);
234 /* called from trigger (STOP only) */
235 void (*flush_dma)(struct atiixp *chip);
236 };
237
238 /*
239 * DMA stream
240 */
241 struct atiixp_dma {
242 const struct atiixp_dma_ops *ops;
243 struct snd_dma_buffer desc_buf;
244 struct snd_pcm_substream *substream; /* assigned PCM substream */
245 unsigned int buf_addr, buf_bytes; /* DMA buffer address, bytes */
246 unsigned int period_bytes, periods;
247 int opened;
248 int running;
249 int suspended;
250 int pcm_open_flag;
251 int ac97_pcm_type; /* index # of ac97_pcm to access, -1 = not used */
252 unsigned int saved_curptr;
253 };
254
255 /*
256 * ATI IXP chip
257 */
258 struct atiixp {
259 struct snd_card *card;
260 struct pci_dev *pci;
261
262 unsigned long addr;
263 void __iomem *remap_addr;
264 int irq;
265
266 struct snd_ac97_bus *ac97_bus;
267 struct snd_ac97 *ac97[NUM_ATI_CODECS];
268
269 spinlock_t reg_lock;
270
271 struct atiixp_dma dmas[NUM_ATI_DMAS];
272 struct ac97_pcm *pcms[NUM_ATI_PCMS];
273 struct snd_pcm *pcmdevs[NUM_ATI_PCMDEVS];
274
275 int max_channels; /* max. channels for PCM out */
276
277 unsigned int codec_not_ready_bits; /* for codec detection */
278
279 int spdif_over_aclink; /* passed from the module option */
280 struct semaphore open_mutex; /* playback open mutex */
281 };
282
283
284 /*
285 */
286 static struct pci_device_id snd_atiixp_ids[] = {
287 { 0x1002, 0x4341, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, /* SB200 */
288 { 0x1002, 0x4361, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, /* SB300 */
289 { 0x1002, 0x4370, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, /* SB400 */
290 { 0, }
291 };
292
293 MODULE_DEVICE_TABLE(pci, snd_atiixp_ids);
294
295
296 /*
297 * lowlevel functions
298 */
299
300 /*
301 * update the bits of the given register.
302 * return 1 if the bits changed.
303 */
304 static int snd_atiixp_update_bits(struct atiixp *chip, unsigned int reg,
305 unsigned int mask, unsigned int value)
306 {
307 void __iomem *addr = chip->remap_addr + reg;
308 unsigned int data, old_data;
309 old_data = data = readl(addr);
310 data &= ~mask;
311 data |= value;
312 if (old_data == data)
313 return 0;
314 writel(data, addr);
315 return 1;
316 }
317
318 /*
319 * macros for easy use
320 */
321 #define atiixp_write(chip,reg,value) \
322 writel(value, chip->remap_addr + ATI_REG_##reg)
323 #define atiixp_read(chip,reg) \
324 readl(chip->remap_addr + ATI_REG_##reg)
325 #define atiixp_update(chip,reg,mask,val) \
326 snd_atiixp_update_bits(chip, ATI_REG_##reg, mask, val)
327
328 /*
329 * handling DMA packets
330 *
331 * we allocate a linear buffer for the DMA, and split it to each packet.
332 * in a future version, a scatter-gather buffer should be implemented.
333 */
334
335 #define ATI_DESC_LIST_SIZE \
336 PAGE_ALIGN(ATI_MAX_DESCRIPTORS * sizeof(struct atiixp_dma_desc))
337
338 /*
339 * build packets ring for the given buffer size.
340 *
341 * IXP handles the buffer descriptors, which are connected as a linked
342 * list. although we can change the list dynamically, in this version,
343 * a static RING of buffer descriptors is used.
344 *
345 * the ring is built in this function, and is set up to the hardware.
346 */
347 static int atiixp_build_dma_packets(struct atiixp *chip, struct atiixp_dma *dma,
348 struct snd_pcm_substream *substream,
349 unsigned int periods,
350 unsigned int period_bytes)
351 {
352 unsigned int i;
353 u32 addr, desc_addr;
354 unsigned long flags;
355
356 if (periods > ATI_MAX_DESCRIPTORS)
357 return -ENOMEM;
358
359 if (dma->desc_buf.area == NULL) {
360 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV,
361 snd_dma_pci_data(chip->pci),
362 ATI_DESC_LIST_SIZE,
363 &dma->desc_buf) < 0)
364 return -ENOMEM;
365 dma->period_bytes = dma->periods = 0; /* clear */
366 }
367
368 if (dma->periods == periods && dma->period_bytes == period_bytes)
369 return 0;
370
371 /* reset DMA before changing the descriptor table */
372 spin_lock_irqsave(&chip->reg_lock, flags);
373 writel(0, chip->remap_addr + dma->ops->llp_offset);
374 dma->ops->enable_dma(chip, 0);
375 dma->ops->enable_dma(chip, 1);
376 spin_unlock_irqrestore(&chip->reg_lock, flags);
377
378 /* fill the entries */
379 addr = (u32)substream->runtime->dma_addr;
380 desc_addr = (u32)dma->desc_buf.addr;
381 for (i = 0; i < periods; i++) {
382 struct atiixp_dma_desc *desc;
383 desc = &((struct atiixp_dma_desc *)dma->desc_buf.area)[i];
384 desc->addr = cpu_to_le32(addr);
385 desc->status = 0;
386 desc->size = period_bytes >> 2; /* in dwords */
387 desc_addr += sizeof(struct atiixp_dma_desc);
388 if (i == periods - 1)
389 desc->next = cpu_to_le32((u32)dma->desc_buf.addr);
390 else
391 desc->next = cpu_to_le32(desc_addr);
392 addr += period_bytes;
393 }
394
395 writel((u32)dma->desc_buf.addr | ATI_REG_LINKPTR_EN,
396 chip->remap_addr + dma->ops->llp_offset);
397
398 dma->period_bytes = period_bytes;
399 dma->periods = periods;
400
401 return 0;
402 }
403
404 /*
405 * remove the ring buffer and release it if assigned
406 */
407 static void atiixp_clear_dma_packets(struct atiixp *chip, struct atiixp_dma *dma,
408 struct snd_pcm_substream *substream)
409 {
410 if (dma->desc_buf.area) {
411 writel(0, chip->remap_addr + dma->ops->llp_offset);
412 snd_dma_free_pages(&dma->desc_buf);
413 dma->desc_buf.area = NULL;
414 }
415 }
416
417 /*
418 * AC97 interface
419 */
420 static int snd_atiixp_acquire_codec(struct atiixp *chip)
421 {
422 int timeout = 1000;
423
424 while (atiixp_read(chip, PHYS_OUT_ADDR) & ATI_REG_PHYS_OUT_ADDR_EN) {
425 if (! timeout--) {
426 snd_printk(KERN_WARNING "atiixp: codec acquire timeout\n");
427 return -EBUSY;
428 }
429 udelay(1);
430 }
431 return 0;
432 }
433
434 static unsigned short snd_atiixp_codec_read(struct atiixp *chip, unsigned short codec, unsigned short reg)
435 {
436 unsigned int data;
437 int timeout;
438
439 if (snd_atiixp_acquire_codec(chip) < 0)
440 return 0xffff;
441 data = (reg << ATI_REG_PHYS_OUT_ADDR_SHIFT) |
442 ATI_REG_PHYS_OUT_ADDR_EN |
443 ATI_REG_PHYS_OUT_RW |
444 codec;
445 atiixp_write(chip, PHYS_OUT_ADDR, data);
446 if (snd_atiixp_acquire_codec(chip) < 0)
447 return 0xffff;
448 timeout = 1000;
449 do {
450 data = atiixp_read(chip, PHYS_IN_ADDR);
451 if (data & ATI_REG_PHYS_IN_READ_FLAG)
452 return data >> ATI_REG_PHYS_IN_DATA_SHIFT;
453 udelay(1);
454 } while (--timeout);
455 /* time out may happen during reset */
456 if (reg < 0x7c)
457 snd_printk(KERN_WARNING "atiixp: codec read timeout (reg %x)\n", reg);
458 return 0xffff;
459 }
460
461
462 static void snd_atiixp_codec_write(struct atiixp *chip, unsigned short codec,
463 unsigned short reg, unsigned short val)
464 {
465 unsigned int data;
466
467 if (snd_atiixp_acquire_codec(chip) < 0)
468 return;
469 data = ((unsigned int)val << ATI_REG_PHYS_OUT_DATA_SHIFT) |
470 ((unsigned int)reg << ATI_REG_PHYS_OUT_ADDR_SHIFT) |
471 ATI_REG_PHYS_OUT_ADDR_EN | codec;
472 atiixp_write(chip, PHYS_OUT_ADDR, data);
473 }
474
475
476 static unsigned short snd_atiixp_ac97_read(struct snd_ac97 *ac97,
477 unsigned short reg)
478 {
479 struct atiixp *chip = ac97->private_data;
480 return snd_atiixp_codec_read(chip, ac97->num, reg);
481
482 }
483
484 static void snd_atiixp_ac97_write(struct snd_ac97 *ac97, unsigned short reg,
485 unsigned short val)
486 {
487 struct atiixp *chip = ac97->private_data;
488 snd_atiixp_codec_write(chip, ac97->num, reg, val);
489 }
490
491 /*
492 * reset AC link
493 */
494 static int snd_atiixp_aclink_reset(struct atiixp *chip)
495 {
496 int timeout;
497
498 /* reset powerdoewn */
499 if (atiixp_update(chip, CMD, ATI_REG_CMD_POWERDOWN, 0))
500 udelay(10);
501
502 /* perform a software reset */
503 atiixp_update(chip, CMD, ATI_REG_CMD_AC_SOFT_RESET, ATI_REG_CMD_AC_SOFT_RESET);
504 atiixp_read(chip, CMD);
505 udelay(10);
506 atiixp_update(chip, CMD, ATI_REG_CMD_AC_SOFT_RESET, 0);
507
508 timeout = 10;
509 while (! (atiixp_read(chip, CMD) & ATI_REG_CMD_ACLINK_ACTIVE)) {
510 /* do a hard reset */
511 atiixp_update(chip, CMD, ATI_REG_CMD_AC_SYNC|ATI_REG_CMD_AC_RESET,
512 ATI_REG_CMD_AC_SYNC);
513 atiixp_read(chip, CMD);
514 mdelay(1);
515 atiixp_update(chip, CMD, ATI_REG_CMD_AC_RESET, ATI_REG_CMD_AC_RESET);
516 if (--timeout) {
517 snd_printk(KERN_ERR "atiixp: codec reset timeout\n");
518 break;
519 }
520 }
521
522 /* deassert RESET and assert SYNC to make sure */
523 atiixp_update(chip, CMD, ATI_REG_CMD_AC_SYNC|ATI_REG_CMD_AC_RESET,
524 ATI_REG_CMD_AC_SYNC|ATI_REG_CMD_AC_RESET);
525
526 return 0;
527 }
528
529 #ifdef CONFIG_PM
530 static int snd_atiixp_aclink_down(struct atiixp *chip)
531 {
532 // if (atiixp_read(chip, MODEM_MIRROR) & 0x1) /* modem running, too? */
533 // return -EBUSY;
534 atiixp_update(chip, CMD,
535 ATI_REG_CMD_POWERDOWN | ATI_REG_CMD_AC_RESET,
536 ATI_REG_CMD_POWERDOWN);
537 return 0;
538 }
539 #endif
540
541 /*
542 * auto-detection of codecs
543 *
544 * the IXP chip can generate interrupts for the non-existing codecs.
545 * NEW_FRAME interrupt is used to make sure that the interrupt is generated
546 * even if all three codecs are connected.
547 */
548
549 #define ALL_CODEC_NOT_READY \
550 (ATI_REG_ISR_CODEC0_NOT_READY |\
551 ATI_REG_ISR_CODEC1_NOT_READY |\
552 ATI_REG_ISR_CODEC2_NOT_READY)
553 #define CODEC_CHECK_BITS (ALL_CODEC_NOT_READY|ATI_REG_ISR_NEW_FRAME)
554
555 static int snd_atiixp_codec_detect(struct atiixp *chip)
556 {
557 int timeout;
558
559 chip->codec_not_ready_bits = 0;
560 atiixp_write(chip, IER, CODEC_CHECK_BITS);
561 /* wait for the interrupts */
562 timeout = 50;
563 while (timeout-- > 0) {
564 mdelay(1);
565 if (chip->codec_not_ready_bits)
566 break;
567 }
568 atiixp_write(chip, IER, 0); /* disable irqs */
569
570 if ((chip->codec_not_ready_bits & ALL_CODEC_NOT_READY) == ALL_CODEC_NOT_READY) {
571 snd_printk(KERN_ERR "atiixp: no codec detected!\n");
572 return -ENXIO;
573 }
574 return 0;
575 }
576
577
578 /*
579 * enable DMA and irqs
580 */
581 static int snd_atiixp_chip_start(struct atiixp *chip)
582 {
583 unsigned int reg;
584
585 /* set up spdif, enable burst mode */
586 reg = atiixp_read(chip, CMD);
587 reg |= 0x02 << ATI_REG_CMD_SPDF_THRESHOLD_SHIFT;
588 reg |= ATI_REG_CMD_BURST_EN;
589 atiixp_write(chip, CMD, reg);
590
591 reg = atiixp_read(chip, SPDF_CMD);
592 reg &= ~(ATI_REG_SPDF_CMD_LFSR|ATI_REG_SPDF_CMD_SINGLE_CH);
593 atiixp_write(chip, SPDF_CMD, reg);
594
595 /* clear all interrupt source */
596 atiixp_write(chip, ISR, 0xffffffff);
597 /* enable irqs */
598 atiixp_write(chip, IER,
599 ATI_REG_IER_IO_STATUS_EN |
600 ATI_REG_IER_IN_XRUN_EN |
601 ATI_REG_IER_OUT_XRUN_EN |
602 ATI_REG_IER_SPDF_XRUN_EN |
603 ATI_REG_IER_SPDF_STATUS_EN);
604 return 0;
605 }
606
607
608 /*
609 * disable DMA and IRQs
610 */
611 static int snd_atiixp_chip_stop(struct atiixp *chip)
612 {
613 /* clear interrupt source */
614 atiixp_write(chip, ISR, atiixp_read(chip, ISR));
615 /* disable irqs */
616 atiixp_write(chip, IER, 0);
617 return 0;
618 }
619
620
621 /*
622 * PCM section
623 */
624
625 /*
626 * pointer callback simplly reads XXX_DMA_DT_CUR register as the current
627 * position. when SG-buffer is implemented, the offset must be calculated
628 * correctly...
629 */
630 static snd_pcm_uframes_t snd_atiixp_pcm_pointer(struct snd_pcm_substream *substream)
631 {
632 struct atiixp *chip = snd_pcm_substream_chip(substream);
633 struct snd_pcm_runtime *runtime = substream->runtime;
634 struct atiixp_dma *dma = runtime->private_data;
635 unsigned int curptr;
636 int timeout = 1000;
637
638 while (timeout--) {
639 curptr = readl(chip->remap_addr + dma->ops->dt_cur);
640 if (curptr < dma->buf_addr)
641 continue;
642 curptr -= dma->buf_addr;
643 if (curptr >= dma->buf_bytes)
644 continue;
645 return bytes_to_frames(runtime, curptr);
646 }
647 snd_printd("atiixp: invalid DMA pointer read 0x%x (buf=%x)\n",
648 readl(chip->remap_addr + dma->ops->dt_cur), dma->buf_addr);
649 return 0;
650 }
651
652 /*
653 * XRUN detected, and stop the PCM substream
654 */
655 static void snd_atiixp_xrun_dma(struct atiixp *chip, struct atiixp_dma *dma)
656 {
657 if (! dma->substream || ! dma->running)
658 return;
659 snd_printdd("atiixp: XRUN detected (DMA %d)\n", dma->ops->type);
660 snd_pcm_stop(dma->substream, SNDRV_PCM_STATE_XRUN);
661 }
662
663 /*
664 * the period ack. update the substream.
665 */
666 static void snd_atiixp_update_dma(struct atiixp *chip, struct atiixp_dma *dma)
667 {
668 if (! dma->substream || ! dma->running)
669 return;
670 snd_pcm_period_elapsed(dma->substream);
671 }
672
673 /* set BUS_BUSY interrupt bit if any DMA is running */
674 /* call with spinlock held */
675 static void snd_atiixp_check_bus_busy(struct atiixp *chip)
676 {
677 unsigned int bus_busy;
678 if (atiixp_read(chip, CMD) & (ATI_REG_CMD_SEND_EN |
679 ATI_REG_CMD_RECEIVE_EN |
680 ATI_REG_CMD_SPDF_OUT_EN))
681 bus_busy = ATI_REG_IER_SET_BUS_BUSY;
682 else
683 bus_busy = 0;
684 atiixp_update(chip, IER, ATI_REG_IER_SET_BUS_BUSY, bus_busy);
685 }
686
687 /* common trigger callback
688 * calling the lowlevel callbacks in it
689 */
690 static int snd_atiixp_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
691 {
692 struct atiixp *chip = snd_pcm_substream_chip(substream);
693 struct atiixp_dma *dma = substream->runtime->private_data;
694 int err = 0;
695
696 snd_assert(dma->ops->enable_transfer && dma->ops->flush_dma, return -EINVAL);
697
698 spin_lock(&chip->reg_lock);
699 switch (cmd) {
700 case SNDRV_PCM_TRIGGER_START:
701 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
702 case SNDRV_PCM_TRIGGER_RESUME:
703 dma->ops->enable_transfer(chip, 1);
704 dma->running = 1;
705 dma->suspended = 0;
706 break;
707 case SNDRV_PCM_TRIGGER_STOP:
708 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
709 case SNDRV_PCM_TRIGGER_SUSPEND:
710 dma->ops->enable_transfer(chip, 0);
711 dma->running = 0;
712 dma->suspended = cmd == SNDRV_PCM_TRIGGER_SUSPEND;
713 break;
714 default:
715 err = -EINVAL;
716 break;
717 }
718 if (! err) {
719 snd_atiixp_check_bus_busy(chip);
720 if (cmd == SNDRV_PCM_TRIGGER_STOP) {
721 dma->ops->flush_dma(chip);
722 snd_atiixp_check_bus_busy(chip);
723 }
724 }
725 spin_unlock(&chip->reg_lock);
726 return err;
727 }
728
729
730 /*
731 * lowlevel callbacks for each DMA type
732 *
733 * every callback is supposed to be called in chip->reg_lock spinlock
734 */
735
736 /* flush FIFO of analog OUT DMA */
737 static void atiixp_out_flush_dma(struct atiixp *chip)
738 {
739 atiixp_write(chip, FIFO_FLUSH, ATI_REG_FIFO_OUT_FLUSH);
740 }
741
742 /* enable/disable analog OUT DMA */
743 static void atiixp_out_enable_dma(struct atiixp *chip, int on)
744 {
745 unsigned int data;
746 data = atiixp_read(chip, CMD);
747 if (on) {
748 if (data & ATI_REG_CMD_OUT_DMA_EN)
749 return;
750 atiixp_out_flush_dma(chip);
751 data |= ATI_REG_CMD_OUT_DMA_EN;
752 } else
753 data &= ~ATI_REG_CMD_OUT_DMA_EN;
754 atiixp_write(chip, CMD, data);
755 }
756
757 /* start/stop transfer over OUT DMA */
758 static void atiixp_out_enable_transfer(struct atiixp *chip, int on)
759 {
760 atiixp_update(chip, CMD, ATI_REG_CMD_SEND_EN,
761 on ? ATI_REG_CMD_SEND_EN : 0);
762 }
763
764 /* enable/disable analog IN DMA */
765 static void atiixp_in_enable_dma(struct atiixp *chip, int on)
766 {
767 atiixp_update(chip, CMD, ATI_REG_CMD_IN_DMA_EN,
768 on ? ATI_REG_CMD_IN_DMA_EN : 0);
769 }
770
771 /* start/stop analog IN DMA */
772 static void atiixp_in_enable_transfer(struct atiixp *chip, int on)
773 {
774 if (on) {
775 unsigned int data = atiixp_read(chip, CMD);
776 if (! (data & ATI_REG_CMD_RECEIVE_EN)) {
777 data |= ATI_REG_CMD_RECEIVE_EN;
778 #if 0 /* FIXME: this causes the endless loop */
779 /* wait until slot 3/4 are finished */
780 while ((atiixp_read(chip, COUNTER) &
781 ATI_REG_COUNTER_SLOT) != 5)
782 ;
783 #endif
784 atiixp_write(chip, CMD, data);
785 }
786 } else
787 atiixp_update(chip, CMD, ATI_REG_CMD_RECEIVE_EN, 0);
788 }
789
790 /* flush FIFO of analog IN DMA */
791 static void atiixp_in_flush_dma(struct atiixp *chip)
792 {
793 atiixp_write(chip, FIFO_FLUSH, ATI_REG_FIFO_IN_FLUSH);
794 }
795
796 /* enable/disable SPDIF OUT DMA */
797 static void atiixp_spdif_enable_dma(struct atiixp *chip, int on)
798 {
799 atiixp_update(chip, CMD, ATI_REG_CMD_SPDF_DMA_EN,
800 on ? ATI_REG_CMD_SPDF_DMA_EN : 0);
801 }
802
803 /* start/stop SPDIF OUT DMA */
804 static void atiixp_spdif_enable_transfer(struct atiixp *chip, int on)
805 {
806 unsigned int data;
807 data = atiixp_read(chip, CMD);
808 if (on)
809 data |= ATI_REG_CMD_SPDF_OUT_EN;
810 else
811 data &= ~ATI_REG_CMD_SPDF_OUT_EN;
812 atiixp_write(chip, CMD, data);
813 }
814
815 /* flush FIFO of SPDIF OUT DMA */
816 static void atiixp_spdif_flush_dma(struct atiixp *chip)
817 {
818 int timeout;
819
820 /* DMA off, transfer on */
821 atiixp_spdif_enable_dma(chip, 0);
822 atiixp_spdif_enable_transfer(chip, 1);
823
824 timeout = 100;
825 do {
826 if (! (atiixp_read(chip, SPDF_DMA_DT_SIZE) & ATI_REG_DMA_FIFO_USED))
827 break;
828 udelay(1);
829 } while (timeout-- > 0);
830
831 atiixp_spdif_enable_transfer(chip, 0);
832 }
833
834 /* set up slots and formats for SPDIF OUT */
835 static int snd_atiixp_spdif_prepare(struct snd_pcm_substream *substream)
836 {
837 struct atiixp *chip = snd_pcm_substream_chip(substream);
838
839 spin_lock_irq(&chip->reg_lock);
840 if (chip->spdif_over_aclink) {
841 unsigned int data;
842 /* enable slots 10/11 */
843 atiixp_update(chip, CMD, ATI_REG_CMD_SPDF_CONFIG_MASK,
844 ATI_REG_CMD_SPDF_CONFIG_01);
845 data = atiixp_read(chip, OUT_DMA_SLOT) & ~ATI_REG_OUT_DMA_SLOT_MASK;
846 data |= ATI_REG_OUT_DMA_SLOT_BIT(10) |
847 ATI_REG_OUT_DMA_SLOT_BIT(11);
848 data |= 0x04 << ATI_REG_OUT_DMA_THRESHOLD_SHIFT;
849 atiixp_write(chip, OUT_DMA_SLOT, data);
850 atiixp_update(chip, CMD, ATI_REG_CMD_INTERLEAVE_OUT,
851 substream->runtime->format == SNDRV_PCM_FORMAT_S16_LE ?
852 ATI_REG_CMD_INTERLEAVE_OUT : 0);
853 } else {
854 atiixp_update(chip, CMD, ATI_REG_CMD_SPDF_CONFIG_MASK, 0);
855 atiixp_update(chip, CMD, ATI_REG_CMD_INTERLEAVE_SPDF, 0);
856 }
857 spin_unlock_irq(&chip->reg_lock);
858 return 0;
859 }
860
861 /* set up slots and formats for analog OUT */
862 static int snd_atiixp_playback_prepare(struct snd_pcm_substream *substream)
863 {
864 struct atiixp *chip = snd_pcm_substream_chip(substream);
865 unsigned int data;
866
867 spin_lock_irq(&chip->reg_lock);
868 data = atiixp_read(chip, OUT_DMA_SLOT) & ~ATI_REG_OUT_DMA_SLOT_MASK;
869 switch (substream->runtime->channels) {
870 case 8:
871 data |= ATI_REG_OUT_DMA_SLOT_BIT(10) |
872 ATI_REG_OUT_DMA_SLOT_BIT(11);
873 /* fallthru */
874 case 6:
875 data |= ATI_REG_OUT_DMA_SLOT_BIT(7) |
876 ATI_REG_OUT_DMA_SLOT_BIT(8);
877 /* fallthru */
878 case 4:
879 data |= ATI_REG_OUT_DMA_SLOT_BIT(6) |
880 ATI_REG_OUT_DMA_SLOT_BIT(9);
881 /* fallthru */
882 default:
883 data |= ATI_REG_OUT_DMA_SLOT_BIT(3) |
884 ATI_REG_OUT_DMA_SLOT_BIT(4);
885 break;
886 }
887
888 /* set output threshold */
889 data |= 0x04 << ATI_REG_OUT_DMA_THRESHOLD_SHIFT;
890 atiixp_write(chip, OUT_DMA_SLOT, data);
891
892 atiixp_update(chip, CMD, ATI_REG_CMD_INTERLEAVE_OUT,
893 substream->runtime->format == SNDRV_PCM_FORMAT_S16_LE ?
894 ATI_REG_CMD_INTERLEAVE_OUT : 0);
895
896 /*
897 * enable 6 channel re-ordering bit if needed
898 */
899 atiixp_update(chip, 6CH_REORDER, ATI_REG_6CH_REORDER_EN,
900 substream->runtime->channels >= 6 ? ATI_REG_6CH_REORDER_EN: 0);
901
902 spin_unlock_irq(&chip->reg_lock);
903 return 0;
904 }
905
906 /* set up slots and formats for analog IN */
907 static int snd_atiixp_capture_prepare(struct snd_pcm_substream *substream)
908 {
909 struct atiixp *chip = snd_pcm_substream_chip(substream);
910
911 spin_lock_irq(&chip->reg_lock);
912 atiixp_update(chip, CMD, ATI_REG_CMD_INTERLEAVE_IN,
913 substream->runtime->format == SNDRV_PCM_FORMAT_S16_LE ?
914 ATI_REG_CMD_INTERLEAVE_IN : 0);
915 spin_unlock_irq(&chip->reg_lock);
916 return 0;
917 }
918
919 /*
920 * hw_params - allocate the buffer and set up buffer descriptors
921 */
922 static int snd_atiixp_pcm_hw_params(struct snd_pcm_substream *substream,
923 struct snd_pcm_hw_params *hw_params)
924 {
925 struct atiixp *chip = snd_pcm_substream_chip(substream);
926 struct atiixp_dma *dma = substream->runtime->private_data;
927 int err;
928
929 err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
930 if (err < 0)
931 return err;
932 dma->buf_addr = substream->runtime->dma_addr;
933 dma->buf_bytes = params_buffer_bytes(hw_params);
934
935 err = atiixp_build_dma_packets(chip, dma, substream,
936 params_periods(hw_params),
937 params_period_bytes(hw_params));
938 if (err < 0)
939 return err;
940
941 if (dma->ac97_pcm_type >= 0) {
942 struct ac97_pcm *pcm = chip->pcms[dma->ac97_pcm_type];
943 /* PCM is bound to AC97 codec(s)
944 * set up the AC97 codecs
945 */
946 if (dma->pcm_open_flag) {
947 snd_ac97_pcm_close(pcm);
948 dma->pcm_open_flag = 0;
949 }
950 err = snd_ac97_pcm_open(pcm, params_rate(hw_params),
951 params_channels(hw_params),
952 pcm->r[0].slots);
953 if (err >= 0)
954 dma->pcm_open_flag = 1;
955 }
956
957 return err;
958 }
959
960 static int snd_atiixp_pcm_hw_free(struct snd_pcm_substream *substream)
961 {
962 struct atiixp *chip = snd_pcm_substream_chip(substream);
963 struct atiixp_dma *dma = substream->runtime->private_data;
964
965 if (dma->pcm_open_flag) {
966 struct ac97_pcm *pcm = chip->pcms[dma->ac97_pcm_type];
967 snd_ac97_pcm_close(pcm);
968 dma->pcm_open_flag = 0;
969 }
970 atiixp_clear_dma_packets(chip, dma, substream);
971 snd_pcm_lib_free_pages(substream);
972 return 0;
973 }
974
975
976 /*
977 * pcm hardware definition, identical for all DMA types
978 */
979 static struct snd_pcm_hardware snd_atiixp_pcm_hw =
980 {
981 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
982 SNDRV_PCM_INFO_BLOCK_TRANSFER |
983 SNDRV_PCM_INFO_PAUSE |
984 SNDRV_PCM_INFO_RESUME |
985 SNDRV_PCM_INFO_MMAP_VALID),
986 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE,
987 .rates = SNDRV_PCM_RATE_48000,
988 .rate_min = 48000,
989 .rate_max = 48000,
990 .channels_min = 2,
991 .channels_max = 2,
992 .buffer_bytes_max = 256 * 1024,
993 .period_bytes_min = 32,
994 .period_bytes_max = 128 * 1024,
995 .periods_min = 2,
996 .periods_max = ATI_MAX_DESCRIPTORS,
997 };
998
999 static int snd_atiixp_pcm_open(struct snd_pcm_substream *substream,
1000 struct atiixp_dma *dma, int pcm_type)
1001 {
1002 struct atiixp *chip = snd_pcm_substream_chip(substream);
1003 struct snd_pcm_runtime *runtime = substream->runtime;
1004 int err;
1005
1006 snd_assert(dma->ops && dma->ops->enable_dma, return -EINVAL);
1007
1008 if (dma->opened)
1009 return -EBUSY;
1010 dma->substream = substream;
1011 runtime->hw = snd_atiixp_pcm_hw;
1012 dma->ac97_pcm_type = pcm_type;
1013 if (pcm_type >= 0) {
1014 runtime->hw.rates = chip->pcms[pcm_type]->rates;
1015 snd_pcm_limit_hw_rates(runtime);
1016 } else {
1017 /* direct SPDIF */
1018 runtime->hw.formats = SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE;
1019 }
1020 if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
1021 return err;
1022 runtime->private_data = dma;
1023
1024 /* enable DMA bits */
1025 spin_lock_irq(&chip->reg_lock);
1026 dma->ops->enable_dma(chip, 1);
1027 spin_unlock_irq(&chip->reg_lock);
1028 dma->opened = 1;
1029
1030 return 0;
1031 }
1032
1033 static int snd_atiixp_pcm_close(struct snd_pcm_substream *substream,
1034 struct atiixp_dma *dma)
1035 {
1036 struct atiixp *chip = snd_pcm_substream_chip(substream);
1037 /* disable DMA bits */
1038 snd_assert(dma->ops && dma->ops->enable_dma, return -EINVAL);
1039 spin_lock_irq(&chip->reg_lock);
1040 dma->ops->enable_dma(chip, 0);
1041 spin_unlock_irq(&chip->reg_lock);
1042 dma->substream = NULL;
1043 dma->opened = 0;
1044 return 0;
1045 }
1046
1047 /*
1048 */
1049 static int snd_atiixp_playback_open(struct snd_pcm_substream *substream)
1050 {
1051 struct atiixp *chip = snd_pcm_substream_chip(substream);
1052 int err;
1053
1054 down(&chip->open_mutex);
1055 err = snd_atiixp_pcm_open(substream, &chip->dmas[ATI_DMA_PLAYBACK], 0);
1056 up(&chip->open_mutex);
1057 if (err < 0)
1058 return err;
1059 substream->runtime->hw.channels_max = chip->max_channels;
1060 if (chip->max_channels > 2)
1061 /* channels must be even */
1062 snd_pcm_hw_constraint_step(substream->runtime, 0,
1063 SNDRV_PCM_HW_PARAM_CHANNELS, 2);
1064 return 0;
1065 }
1066
1067 static int snd_atiixp_playback_close(struct snd_pcm_substream *substream)
1068 {
1069 struct atiixp *chip = snd_pcm_substream_chip(substream);
1070 int err;
1071 down(&chip->open_mutex);
1072 err = snd_atiixp_pcm_close(substream, &chip->dmas[ATI_DMA_PLAYBACK]);
1073 up(&chip->open_mutex);
1074 return err;
1075 }
1076
1077 static int snd_atiixp_capture_open(struct snd_pcm_substream *substream)
1078 {
1079 struct atiixp *chip = snd_pcm_substream_chip(substream);
1080 return snd_atiixp_pcm_open(substream, &chip->dmas[ATI_DMA_CAPTURE], 1);
1081 }
1082
1083 static int snd_atiixp_capture_close(struct snd_pcm_substream *substream)
1084 {
1085 struct atiixp *chip = snd_pcm_substream_chip(substream);
1086 return snd_atiixp_pcm_close(substream, &chip->dmas[ATI_DMA_CAPTURE]);
1087 }
1088
1089 static int snd_atiixp_spdif_open(struct snd_pcm_substream *substream)
1090 {
1091 struct atiixp *chip = snd_pcm_substream_chip(substream);
1092 int err;
1093 down(&chip->open_mutex);
1094 if (chip->spdif_over_aclink) /* share DMA_PLAYBACK */
1095 err = snd_atiixp_pcm_open(substream, &chip->dmas[ATI_DMA_PLAYBACK], 2);
1096 else
1097 err = snd_atiixp_pcm_open(substream, &chip->dmas[ATI_DMA_SPDIF], -1);
1098 up(&chip->open_mutex);
1099 return err;
1100 }
1101
1102 static int snd_atiixp_spdif_close(struct snd_pcm_substream *substream)
1103 {
1104 struct atiixp *chip = snd_pcm_substream_chip(substream);
1105 int err;
1106 down(&chip->open_mutex);
1107 if (chip->spdif_over_aclink)
1108 err = snd_atiixp_pcm_close(substream, &chip->dmas[ATI_DMA_PLAYBACK]);
1109 else
1110 err = snd_atiixp_pcm_close(substream, &chip->dmas[ATI_DMA_SPDIF]);
1111 up(&chip->open_mutex);
1112 return err;
1113 }
1114
1115 /* AC97 playback */
1116 static struct snd_pcm_ops snd_atiixp_playback_ops = {
1117 .open = snd_atiixp_playback_open,
1118 .close = snd_atiixp_playback_close,
1119 .ioctl = snd_pcm_lib_ioctl,
1120 .hw_params = snd_atiixp_pcm_hw_params,
1121 .hw_free = snd_atiixp_pcm_hw_free,
1122 .prepare = snd_atiixp_playback_prepare,
1123 .trigger = snd_atiixp_pcm_trigger,
1124 .pointer = snd_atiixp_pcm_pointer,
1125 };
1126
1127 /* AC97 capture */
1128 static struct snd_pcm_ops snd_atiixp_capture_ops = {
1129 .open = snd_atiixp_capture_open,
1130 .close = snd_atiixp_capture_close,
1131 .ioctl = snd_pcm_lib_ioctl,
1132 .hw_params = snd_atiixp_pcm_hw_params,
1133 .hw_free = snd_atiixp_pcm_hw_free,
1134 .prepare = snd_atiixp_capture_prepare,
1135 .trigger = snd_atiixp_pcm_trigger,
1136 .pointer = snd_atiixp_pcm_pointer,
1137 };
1138
1139 /* SPDIF playback */
1140 static struct snd_pcm_ops snd_atiixp_spdif_ops = {
1141 .open = snd_atiixp_spdif_open,
1142 .close = snd_atiixp_spdif_close,
1143 .ioctl = snd_pcm_lib_ioctl,
1144 .hw_params = snd_atiixp_pcm_hw_params,
1145 .hw_free = snd_atiixp_pcm_hw_free,
1146 .prepare = snd_atiixp_spdif_prepare,
1147 .trigger = snd_atiixp_pcm_trigger,
1148 .pointer = snd_atiixp_pcm_pointer,
1149 };
1150
1151 static struct ac97_pcm atiixp_pcm_defs[] __devinitdata = {
1152 /* front PCM */
1153 {
1154 .exclusive = 1,
1155 .r = { {
1156 .slots = (1 << AC97_SLOT_PCM_LEFT) |
1157 (1 << AC97_SLOT_PCM_RIGHT) |
1158 (1 << AC97_SLOT_PCM_CENTER) |
1159 (1 << AC97_SLOT_PCM_SLEFT) |
1160 (1 << AC97_SLOT_PCM_SRIGHT) |
1161 (1 << AC97_SLOT_LFE)
1162 }
1163 }
1164 },
1165 /* PCM IN #1 */
1166 {
1167 .stream = 1,
1168 .exclusive = 1,
1169 .r = { {
1170 .slots = (1 << AC97_SLOT_PCM_LEFT) |
1171 (1 << AC97_SLOT_PCM_RIGHT)
1172 }
1173 }
1174 },
1175 /* S/PDIF OUT (optional) */
1176 {
1177 .exclusive = 1,
1178 .spdif = 1,
1179 .r = { {
1180 .slots = (1 << AC97_SLOT_SPDIF_LEFT2) |
1181 (1 << AC97_SLOT_SPDIF_RIGHT2)
1182 }
1183 }
1184 },
1185 };
1186
1187 static struct atiixp_dma_ops snd_atiixp_playback_dma_ops = {
1188 .type = ATI_DMA_PLAYBACK,
1189 .llp_offset = ATI_REG_OUT_DMA_LINKPTR,
1190 .dt_cur = ATI_REG_OUT_DMA_DT_CUR,
1191 .enable_dma = atiixp_out_enable_dma,
1192 .enable_transfer = atiixp_out_enable_transfer,
1193 .flush_dma = atiixp_out_flush_dma,
1194 };
1195
1196 static struct atiixp_dma_ops snd_atiixp_capture_dma_ops = {
1197 .type = ATI_DMA_CAPTURE,
1198 .llp_offset = ATI_REG_IN_DMA_LINKPTR,
1199 .dt_cur = ATI_REG_IN_DMA_DT_CUR,
1200 .enable_dma = atiixp_in_enable_dma,
1201 .enable_transfer = atiixp_in_enable_transfer,
1202 .flush_dma = atiixp_in_flush_dma,
1203 };
1204
1205 static struct atiixp_dma_ops snd_atiixp_spdif_dma_ops = {
1206 .type = ATI_DMA_SPDIF,
1207 .llp_offset = ATI_REG_SPDF_DMA_LINKPTR,
1208 .dt_cur = ATI_REG_SPDF_DMA_DT_CUR,
1209 .enable_dma = atiixp_spdif_enable_dma,
1210 .enable_transfer = atiixp_spdif_enable_transfer,
1211 .flush_dma = atiixp_spdif_flush_dma,
1212 };
1213
1214
1215 static int __devinit snd_atiixp_pcm_new(struct atiixp *chip)
1216 {
1217 struct snd_pcm *pcm;
1218 struct snd_ac97_bus *pbus = chip->ac97_bus;
1219 int err, i, num_pcms;
1220
1221 /* initialize constants */
1222 chip->dmas[ATI_DMA_PLAYBACK].ops = &snd_atiixp_playback_dma_ops;
1223 chip->dmas[ATI_DMA_CAPTURE].ops = &snd_atiixp_capture_dma_ops;
1224 if (! chip->spdif_over_aclink)
1225 chip->dmas[ATI_DMA_SPDIF].ops = &snd_atiixp_spdif_dma_ops;
1226
1227 /* assign AC97 pcm */
1228 if (chip->spdif_over_aclink)
1229 num_pcms = 3;
1230 else
1231 num_pcms = 2;
1232 err = snd_ac97_pcm_assign(pbus, num_pcms, atiixp_pcm_defs);
1233 if (err < 0)
1234 return err;
1235 for (i = 0; i < num_pcms; i++)
1236 chip->pcms[i] = &pbus->pcms[i];
1237
1238 chip->max_channels = 2;
1239 if (pbus->pcms[ATI_PCM_OUT].r[0].slots & (1 << AC97_SLOT_PCM_SLEFT)) {
1240 if (pbus->pcms[ATI_PCM_OUT].r[0].slots & (1 << AC97_SLOT_LFE))
1241 chip->max_channels = 6;
1242 else
1243 chip->max_channels = 4;
1244 }
1245
1246 /* PCM #0: analog I/O */
1247 err = snd_pcm_new(chip->card, "ATI IXP AC97",
1248 ATI_PCMDEV_ANALOG, 1, 1, &pcm);
1249 if (err < 0)
1250 return err;
1251 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_atiixp_playback_ops);
1252 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_atiixp_capture_ops);
1253 pcm->private_data = chip;
1254 strcpy(pcm->name, "ATI IXP AC97");
1255 chip->pcmdevs[ATI_PCMDEV_ANALOG] = pcm;
1256
1257 snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1258 snd_dma_pci_data(chip->pci),
1259 64*1024, 128*1024);
1260
1261 /* no SPDIF support on codec? */
1262 if (chip->pcms[ATI_PCM_SPDIF] && ! chip->pcms[ATI_PCM_SPDIF]->rates)
1263 return 0;
1264
1265 /* FIXME: non-48k sample rate doesn't work on my test machine with AD1888 */
1266 if (chip->pcms[ATI_PCM_SPDIF])
1267 chip->pcms[ATI_PCM_SPDIF]->rates = SNDRV_PCM_RATE_48000;
1268
1269 /* PCM #1: spdif playback */
1270 err = snd_pcm_new(chip->card, "ATI IXP IEC958",
1271 ATI_PCMDEV_DIGITAL, 1, 0, &pcm);
1272 if (err < 0)
1273 return err;
1274 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_atiixp_spdif_ops);
1275 pcm->private_data = chip;
1276 if (chip->spdif_over_aclink)
1277 strcpy(pcm->name, "ATI IXP IEC958 (AC97)");
1278 else
1279 strcpy(pcm->name, "ATI IXP IEC958 (Direct)");
1280 chip->pcmdevs[ATI_PCMDEV_DIGITAL] = pcm;
1281
1282 snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1283 snd_dma_pci_data(chip->pci),
1284 64*1024, 128*1024);
1285
1286 /* pre-select AC97 SPDIF slots 10/11 */
1287 for (i = 0; i < NUM_ATI_CODECS; i++) {
1288 if (chip->ac97[i])
1289 snd_ac97_update_bits(chip->ac97[i],
1290 AC97_EXTENDED_STATUS,
1291 0x03 << 4, 0x03 << 4);
1292 }
1293
1294 return 0;
1295 }
1296
1297
1298
1299 /*
1300 * interrupt handler
1301 */
1302 static irqreturn_t snd_atiixp_interrupt(int irq, void *dev_id, struct pt_regs *regs)
1303 {
1304 struct atiixp *chip = dev_id;
1305 unsigned int status;
1306
1307 status = atiixp_read(chip, ISR);
1308
1309 if (! status)
1310 return IRQ_NONE;
1311
1312 /* process audio DMA */
1313 if (status & ATI_REG_ISR_OUT_XRUN)
1314 snd_atiixp_xrun_dma(chip, &chip->dmas[ATI_DMA_PLAYBACK]);
1315 else if (status & ATI_REG_ISR_OUT_STATUS)
1316 snd_atiixp_update_dma(chip, &chip->dmas[ATI_DMA_PLAYBACK]);
1317 if (status & ATI_REG_ISR_IN_XRUN)
1318 snd_atiixp_xrun_dma(chip, &chip->dmas[ATI_DMA_CAPTURE]);
1319 else if (status & ATI_REG_ISR_IN_STATUS)
1320 snd_atiixp_update_dma(chip, &chip->dmas[ATI_DMA_CAPTURE]);
1321 if (! chip->spdif_over_aclink) {
1322 if (status & ATI_REG_ISR_SPDF_XRUN)
1323 snd_atiixp_xrun_dma(chip, &chip->dmas[ATI_DMA_SPDIF]);
1324 else if (status & ATI_REG_ISR_SPDF_STATUS)
1325 snd_atiixp_update_dma(chip, &chip->dmas[ATI_DMA_SPDIF]);
1326 }
1327
1328 /* for codec detection */
1329 if (status & CODEC_CHECK_BITS) {
1330 unsigned int detected;
1331 detected = status & CODEC_CHECK_BITS;
1332 spin_lock(&chip->reg_lock);
1333 chip->codec_not_ready_bits |= detected;
1334 atiixp_update(chip, IER, detected, 0); /* disable the detected irqs */
1335 spin_unlock(&chip->reg_lock);
1336 }
1337
1338 /* ack */
1339 atiixp_write(chip, ISR, status);
1340
1341 return IRQ_HANDLED;
1342 }
1343
1344
1345 /*
1346 * ac97 mixer section
1347 */
1348
1349 static struct ac97_quirk ac97_quirks[] __devinitdata = {
1350 {
1351 .subvendor = 0x103c,
1352 .subdevice = 0x006b,
1353 .name = "HP Pavilion ZV5030US",
1354 .type = AC97_TUNE_MUTE_LED
1355 },
1356 {
1357 .subvendor = 0x103c,
1358 .subdevice = 0x308b,
1359 .name = "HP nx6125",
1360 .type = AC97_TUNE_MUTE_LED
1361 },
1362 { } /* terminator */
1363 };
1364
1365 static int __devinit snd_atiixp_mixer_new(struct atiixp *chip, int clock,
1366 const char *quirk_override)
1367 {
1368 struct snd_ac97_bus *pbus;
1369 struct snd_ac97_template ac97;
1370 int i, err;
1371 int codec_count;
1372 static struct snd_ac97_bus_ops ops = {
1373 .write = snd_atiixp_ac97_write,
1374 .read = snd_atiixp_ac97_read,
1375 };
1376 static unsigned int codec_skip[NUM_ATI_CODECS] = {
1377 ATI_REG_ISR_CODEC0_NOT_READY,
1378 ATI_REG_ISR_CODEC1_NOT_READY,
1379 ATI_REG_ISR_CODEC2_NOT_READY,
1380 };
1381
1382 if (snd_atiixp_codec_detect(chip) < 0)
1383 return -ENXIO;
1384
1385 if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &pbus)) < 0)
1386 return err;
1387 pbus->clock = clock;
1388 chip->ac97_bus = pbus;
1389
1390 codec_count = 0;
1391 for (i = 0; i < NUM_ATI_CODECS; i++) {
1392 if (chip->codec_not_ready_bits & codec_skip[i])
1393 continue;
1394 memset(&ac97, 0, sizeof(ac97));
1395 ac97.private_data = chip;
1396 ac97.pci = chip->pci;
1397 ac97.num = i;
1398 ac97.scaps = AC97_SCAP_SKIP_MODEM;
1399 if (! chip->spdif_over_aclink)
1400 ac97.scaps |= AC97_SCAP_NO_SPDIF;
1401 if ((err = snd_ac97_mixer(pbus, &ac97, &chip->ac97[i])) < 0) {
1402 chip->ac97[i] = NULL; /* to be sure */
1403 snd_printdd("atiixp: codec %d not available for audio\n", i);
1404 continue;
1405 }
1406 codec_count++;
1407 }
1408
1409 if (! codec_count) {
1410 snd_printk(KERN_ERR "atiixp: no codec available\n");
1411 return -ENODEV;
1412 }
1413
1414 snd_ac97_tune_hardware(chip->ac97[0], ac97_quirks, quirk_override);
1415
1416 return 0;
1417 }
1418
1419
1420 #ifdef CONFIG_PM
1421 /*
1422 * power management
1423 */
1424 static int snd_atiixp_suspend(struct pci_dev *pci, pm_message_t state)
1425 {
1426 struct snd_card *card = pci_get_drvdata(pci);
1427 struct atiixp *chip = card->private_data;
1428 int i;
1429
1430 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
1431 for (i = 0; i < NUM_ATI_PCMDEVS; i++)
1432 if (chip->pcmdevs[i]) {
1433 struct atiixp_dma *dma = &chip->dmas[i];
1434 if (dma->substream && dma->running)
1435 dma->saved_curptr = readl(chip->remap_addr +
1436 dma->ops->dt_cur);
1437 snd_pcm_suspend_all(chip->pcmdevs[i]);
1438 }
1439 for (i = 0; i < NUM_ATI_CODECS; i++)
1440 snd_ac97_suspend(chip->ac97[i]);
1441 snd_atiixp_aclink_down(chip);
1442 snd_atiixp_chip_stop(chip);
1443
1444 pci_set_power_state(pci, PCI_D3hot);
1445 pci_disable_device(pci);
1446 pci_save_state(pci);
1447 return 0;
1448 }
1449
1450 static int snd_atiixp_resume(struct pci_dev *pci)
1451 {
1452 struct snd_card *card = pci_get_drvdata(pci);
1453 struct atiixp *chip = card->private_data;
1454 int i;
1455
1456 pci_restore_state(pci);
1457 pci_enable_device(pci);
1458 pci_set_power_state(pci, PCI_D0);
1459 pci_set_master(pci);
1460
1461 snd_atiixp_aclink_reset(chip);
1462 snd_atiixp_chip_start(chip);
1463
1464 for (i = 0; i < NUM_ATI_CODECS; i++)
1465 snd_ac97_resume(chip->ac97[i]);
1466
1467 for (i = 0; i < NUM_ATI_PCMDEVS; i++)
1468 if (chip->pcmdevs[i]) {
1469 struct atiixp_dma *dma = &chip->dmas[i];
1470 if (dma->substream && dma->suspended) {
1471 dma->ops->enable_dma(chip, 1);
1472 dma->substream->ops->prepare(dma->substream);
1473 writel((u32)dma->desc_buf.addr | ATI_REG_LINKPTR_EN,
1474 chip->remap_addr + dma->ops->llp_offset);
1475 writel(dma->saved_curptr, chip->remap_addr +
1476 dma->ops->dt_cur);
1477 }
1478 }
1479
1480 snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1481 return 0;
1482 }
1483 #endif /* CONFIG_PM */
1484
1485
1486 #ifdef CONFIG_PROC_FS
1487 /*
1488 * proc interface for register dump
1489 */
1490
1491 static void snd_atiixp_proc_read(struct snd_info_entry *entry,
1492 struct snd_info_buffer *buffer)
1493 {
1494 struct atiixp *chip = entry->private_data;
1495 int i;
1496
1497 for (i = 0; i < 256; i += 4)
1498 snd_iprintf(buffer, "%02x: %08x\n", i, readl(chip->remap_addr + i));
1499 }
1500
1501 static void __devinit snd_atiixp_proc_init(struct atiixp *chip)
1502 {
1503 struct snd_info_entry *entry;
1504
1505 if (! snd_card_proc_new(chip->card, "atiixp", &entry))
1506 snd_info_set_text_ops(entry, chip, 1024, snd_atiixp_proc_read);
1507 }
1508 #else /* !CONFIG_PROC_FS */
1509 #define snd_atiixp_proc_init(chip)
1510 #endif
1511
1512
1513 /*
1514 * destructor
1515 */
1516
1517 static int snd_atiixp_free(struct atiixp *chip)
1518 {
1519 if (chip->irq < 0)
1520 goto __hw_end;
1521 snd_atiixp_chip_stop(chip);
1522 synchronize_irq(chip->irq);
1523 __hw_end:
1524 if (chip->irq >= 0)
1525 free_irq(chip->irq, chip);
1526 if (chip->remap_addr)
1527 iounmap(chip->remap_addr);
1528 pci_release_regions(chip->pci);
1529 pci_disable_device(chip->pci);
1530 kfree(chip);
1531 return 0;
1532 }
1533
1534 static int snd_atiixp_dev_free(struct snd_device *device)
1535 {
1536 struct atiixp *chip = device->device_data;
1537 return snd_atiixp_free(chip);
1538 }
1539
1540 /*
1541 * constructor for chip instance
1542 */
1543 static int __devinit snd_atiixp_create(struct snd_card *card,
1544 struct pci_dev *pci,
1545 struct atiixp **r_chip)
1546 {
1547 static struct snd_device_ops ops = {
1548 .dev_free = snd_atiixp_dev_free,
1549 };
1550 struct atiixp *chip;
1551 int err;
1552
1553 if ((err = pci_enable_device(pci)) < 0)
1554 return err;
1555
1556 chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1557 if (chip == NULL) {
1558 pci_disable_device(pci);
1559 return -ENOMEM;
1560 }
1561
1562 spin_lock_init(&chip->reg_lock);
1563 init_MUTEX(&chip->open_mutex);
1564 chip->card = card;
1565 chip->pci = pci;
1566 chip->irq = -1;
1567 if ((err = pci_request_regions(pci, "ATI IXP AC97")) < 0) {
1568 pci_disable_device(pci);
1569 kfree(chip);
1570 return err;
1571 }
1572 chip->addr = pci_resource_start(pci, 0);
1573 chip->remap_addr = ioremap_nocache(chip->addr, pci_resource_len(pci, 0));
1574 if (chip->remap_addr == NULL) {
1575 snd_printk(KERN_ERR "AC'97 space ioremap problem\n");
1576 snd_atiixp_free(chip);
1577 return -EIO;
1578 }
1579
1580 if (request_irq(pci->irq, snd_atiixp_interrupt, SA_INTERRUPT|SA_SHIRQ,
1581 card->shortname, chip)) {
1582 snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq);
1583 snd_atiixp_free(chip);
1584 return -EBUSY;
1585 }
1586 chip->irq = pci->irq;
1587 pci_set_master(pci);
1588 synchronize_irq(chip->irq);
1589
1590 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1591 snd_atiixp_free(chip);
1592 return err;
1593 }
1594
1595 snd_card_set_dev(card, &pci->dev);
1596
1597 *r_chip = chip;
1598 return 0;
1599 }
1600
1601
1602 static int __devinit snd_atiixp_probe(struct pci_dev *pci,
1603 const struct pci_device_id *pci_id)
1604 {
1605 struct snd_card *card;
1606 struct atiixp *chip;
1607 unsigned char revision;
1608 int err;
1609
1610 card = snd_card_new(index, id, THIS_MODULE, 0);
1611 if (card == NULL)
1612 return -ENOMEM;
1613
1614 pci_read_config_byte(pci, PCI_REVISION_ID, &revision);
1615
1616 strcpy(card->driver, spdif_aclink ? "ATIIXP" : "ATIIXP-SPDMA");
1617 strcpy(card->shortname, "ATI IXP");
1618 if ((err = snd_atiixp_create(card, pci, &chip)) < 0)
1619 goto __error;
1620 card->private_data = chip;
1621
1622 if ((err = snd_atiixp_aclink_reset(chip)) < 0)
1623 goto __error;
1624
1625 chip->spdif_over_aclink = spdif_aclink;
1626
1627 if ((err = snd_atiixp_mixer_new(chip, ac97_clock, ac97_quirk)) < 0)
1628 goto __error;
1629
1630 if ((err = snd_atiixp_pcm_new(chip)) < 0)
1631 goto __error;
1632
1633 snd_atiixp_proc_init(chip);
1634
1635 snd_atiixp_chip_start(chip);
1636
1637 snprintf(card->longname, sizeof(card->longname),
1638 "%s rev %x with %s at %#lx, irq %i", card->shortname, revision,
1639 chip->ac97[0] ? snd_ac97_get_short_name(chip->ac97[0]) : "?",
1640 chip->addr, chip->irq);
1641
1642 if ((err = snd_card_register(card)) < 0)
1643 goto __error;
1644
1645 pci_set_drvdata(pci, card);
1646 return 0;
1647
1648 __error:
1649 snd_card_free(card);
1650 return err;
1651 }
1652
1653 static void __devexit snd_atiixp_remove(struct pci_dev *pci)
1654 {
1655 snd_card_free(pci_get_drvdata(pci));
1656 pci_set_drvdata(pci, NULL);
1657 }
1658
1659 static struct pci_driver driver = {
1660 .name = "ATI IXP AC97 controller",
1661 .id_table = snd_atiixp_ids,
1662 .probe = snd_atiixp_probe,
1663 .remove = __devexit_p(snd_atiixp_remove),
1664 #ifdef CONFIG_PM
1665 .suspend = snd_atiixp_suspend,
1666 .resume = snd_atiixp_resume,
1667 #endif
1668 };
1669
1670
1671 static int __init alsa_card_atiixp_init(void)
1672 {
1673 return pci_register_driver(&driver);
1674 }
1675
1676 static void __exit alsa_card_atiixp_exit(void)
1677 {
1678 pci_unregister_driver(&driver);
1679 }
1680
1681 module_init(alsa_card_atiixp_init)
1682 module_exit(alsa_card_atiixp_exit)
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