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[mirror_ubuntu-zesty-kernel.git] / sound / pci / atiixp.c
1 /*
2 * ALSA driver for ATI IXP 150/200/250/300 AC97 controllers
3 *
4 * Copyright (c) 2004 Takashi Iwai <tiwai@suse.de>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 *
20 */
21
22 #include <asm/io.h>
23 #include <linux/delay.h>
24 #include <linux/interrupt.h>
25 #include <linux/init.h>
26 #include <linux/pci.h>
27 #include <linux/slab.h>
28 #include <linux/module.h>
29 #include <linux/mutex.h>
30 #include <sound/core.h>
31 #include <sound/pcm.h>
32 #include <sound/pcm_params.h>
33 #include <sound/info.h>
34 #include <sound/ac97_codec.h>
35 #include <sound/initval.h>
36
37 MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>");
38 MODULE_DESCRIPTION("ATI IXP AC97 controller");
39 MODULE_LICENSE("GPL");
40 MODULE_SUPPORTED_DEVICE("{{ATI,IXP150/200/250/300/400/600}}");
41
42 static int index = SNDRV_DEFAULT_IDX1; /* Index 0-MAX */
43 static char *id = SNDRV_DEFAULT_STR1; /* ID for this card */
44 static int ac97_clock = 48000;
45 static char *ac97_quirk;
46 static bool spdif_aclink = 1;
47 static int ac97_codec = -1;
48
49 module_param(index, int, 0444);
50 MODULE_PARM_DESC(index, "Index value for ATI IXP controller.");
51 module_param(id, charp, 0444);
52 MODULE_PARM_DESC(id, "ID string for ATI IXP controller.");
53 module_param(ac97_clock, int, 0444);
54 MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz).");
55 module_param(ac97_quirk, charp, 0444);
56 MODULE_PARM_DESC(ac97_quirk, "AC'97 workaround for strange hardware.");
57 module_param(ac97_codec, int, 0444);
58 MODULE_PARM_DESC(ac97_codec, "Specify codec instead of probing.");
59 module_param(spdif_aclink, bool, 0444);
60 MODULE_PARM_DESC(spdif_aclink, "S/PDIF over AC-link.");
61
62 /* just for backward compatibility */
63 static bool enable;
64 module_param(enable, bool, 0444);
65
66
67 /*
68 */
69
70 #define ATI_REG_ISR 0x00 /* interrupt source */
71 #define ATI_REG_ISR_IN_XRUN (1U<<0)
72 #define ATI_REG_ISR_IN_STATUS (1U<<1)
73 #define ATI_REG_ISR_OUT_XRUN (1U<<2)
74 #define ATI_REG_ISR_OUT_STATUS (1U<<3)
75 #define ATI_REG_ISR_SPDF_XRUN (1U<<4)
76 #define ATI_REG_ISR_SPDF_STATUS (1U<<5)
77 #define ATI_REG_ISR_PHYS_INTR (1U<<8)
78 #define ATI_REG_ISR_PHYS_MISMATCH (1U<<9)
79 #define ATI_REG_ISR_CODEC0_NOT_READY (1U<<10)
80 #define ATI_REG_ISR_CODEC1_NOT_READY (1U<<11)
81 #define ATI_REG_ISR_CODEC2_NOT_READY (1U<<12)
82 #define ATI_REG_ISR_NEW_FRAME (1U<<13)
83
84 #define ATI_REG_IER 0x04 /* interrupt enable */
85 #define ATI_REG_IER_IN_XRUN_EN (1U<<0)
86 #define ATI_REG_IER_IO_STATUS_EN (1U<<1)
87 #define ATI_REG_IER_OUT_XRUN_EN (1U<<2)
88 #define ATI_REG_IER_OUT_XRUN_COND (1U<<3)
89 #define ATI_REG_IER_SPDF_XRUN_EN (1U<<4)
90 #define ATI_REG_IER_SPDF_STATUS_EN (1U<<5)
91 #define ATI_REG_IER_PHYS_INTR_EN (1U<<8)
92 #define ATI_REG_IER_PHYS_MISMATCH_EN (1U<<9)
93 #define ATI_REG_IER_CODEC0_INTR_EN (1U<<10)
94 #define ATI_REG_IER_CODEC1_INTR_EN (1U<<11)
95 #define ATI_REG_IER_CODEC2_INTR_EN (1U<<12)
96 #define ATI_REG_IER_NEW_FRAME_EN (1U<<13) /* (RO */
97 #define ATI_REG_IER_SET_BUS_BUSY (1U<<14) /* (WO) audio is running */
98
99 #define ATI_REG_CMD 0x08 /* command */
100 #define ATI_REG_CMD_POWERDOWN (1U<<0)
101 #define ATI_REG_CMD_RECEIVE_EN (1U<<1)
102 #define ATI_REG_CMD_SEND_EN (1U<<2)
103 #define ATI_REG_CMD_STATUS_MEM (1U<<3)
104 #define ATI_REG_CMD_SPDF_OUT_EN (1U<<4)
105 #define ATI_REG_CMD_SPDF_STATUS_MEM (1U<<5)
106 #define ATI_REG_CMD_SPDF_THRESHOLD (3U<<6)
107 #define ATI_REG_CMD_SPDF_THRESHOLD_SHIFT 6
108 #define ATI_REG_CMD_IN_DMA_EN (1U<<8)
109 #define ATI_REG_CMD_OUT_DMA_EN (1U<<9)
110 #define ATI_REG_CMD_SPDF_DMA_EN (1U<<10)
111 #define ATI_REG_CMD_SPDF_OUT_STOPPED (1U<<11)
112 #define ATI_REG_CMD_SPDF_CONFIG_MASK (7U<<12)
113 #define ATI_REG_CMD_SPDF_CONFIG_34 (1U<<12)
114 #define ATI_REG_CMD_SPDF_CONFIG_78 (2U<<12)
115 #define ATI_REG_CMD_SPDF_CONFIG_69 (3U<<12)
116 #define ATI_REG_CMD_SPDF_CONFIG_01 (4U<<12)
117 #define ATI_REG_CMD_INTERLEAVE_SPDF (1U<<16)
118 #define ATI_REG_CMD_AUDIO_PRESENT (1U<<20)
119 #define ATI_REG_CMD_INTERLEAVE_IN (1U<<21)
120 #define ATI_REG_CMD_INTERLEAVE_OUT (1U<<22)
121 #define ATI_REG_CMD_LOOPBACK_EN (1U<<23)
122 #define ATI_REG_CMD_PACKED_DIS (1U<<24)
123 #define ATI_REG_CMD_BURST_EN (1U<<25)
124 #define ATI_REG_CMD_PANIC_EN (1U<<26)
125 #define ATI_REG_CMD_MODEM_PRESENT (1U<<27)
126 #define ATI_REG_CMD_ACLINK_ACTIVE (1U<<28)
127 #define ATI_REG_CMD_AC_SOFT_RESET (1U<<29)
128 #define ATI_REG_CMD_AC_SYNC (1U<<30)
129 #define ATI_REG_CMD_AC_RESET (1U<<31)
130
131 #define ATI_REG_PHYS_OUT_ADDR 0x0c
132 #define ATI_REG_PHYS_OUT_CODEC_MASK (3U<<0)
133 #define ATI_REG_PHYS_OUT_RW (1U<<2)
134 #define ATI_REG_PHYS_OUT_ADDR_EN (1U<<8)
135 #define ATI_REG_PHYS_OUT_ADDR_SHIFT 9
136 #define ATI_REG_PHYS_OUT_DATA_SHIFT 16
137
138 #define ATI_REG_PHYS_IN_ADDR 0x10
139 #define ATI_REG_PHYS_IN_READ_FLAG (1U<<8)
140 #define ATI_REG_PHYS_IN_ADDR_SHIFT 9
141 #define ATI_REG_PHYS_IN_DATA_SHIFT 16
142
143 #define ATI_REG_SLOTREQ 0x14
144
145 #define ATI_REG_COUNTER 0x18
146 #define ATI_REG_COUNTER_SLOT (3U<<0) /* slot # */
147 #define ATI_REG_COUNTER_BITCLOCK (31U<<8)
148
149 #define ATI_REG_IN_FIFO_THRESHOLD 0x1c
150
151 #define ATI_REG_IN_DMA_LINKPTR 0x20
152 #define ATI_REG_IN_DMA_DT_START 0x24 /* RO */
153 #define ATI_REG_IN_DMA_DT_NEXT 0x28 /* RO */
154 #define ATI_REG_IN_DMA_DT_CUR 0x2c /* RO */
155 #define ATI_REG_IN_DMA_DT_SIZE 0x30
156
157 #define ATI_REG_OUT_DMA_SLOT 0x34
158 #define ATI_REG_OUT_DMA_SLOT_BIT(x) (1U << ((x) - 3))
159 #define ATI_REG_OUT_DMA_SLOT_MASK 0x1ff
160 #define ATI_REG_OUT_DMA_THRESHOLD_MASK 0xf800
161 #define ATI_REG_OUT_DMA_THRESHOLD_SHIFT 11
162
163 #define ATI_REG_OUT_DMA_LINKPTR 0x38
164 #define ATI_REG_OUT_DMA_DT_START 0x3c /* RO */
165 #define ATI_REG_OUT_DMA_DT_NEXT 0x40 /* RO */
166 #define ATI_REG_OUT_DMA_DT_CUR 0x44 /* RO */
167 #define ATI_REG_OUT_DMA_DT_SIZE 0x48
168
169 #define ATI_REG_SPDF_CMD 0x4c
170 #define ATI_REG_SPDF_CMD_LFSR (1U<<4)
171 #define ATI_REG_SPDF_CMD_SINGLE_CH (1U<<5)
172 #define ATI_REG_SPDF_CMD_LFSR_ACC (0xff<<8) /* RO */
173
174 #define ATI_REG_SPDF_DMA_LINKPTR 0x50
175 #define ATI_REG_SPDF_DMA_DT_START 0x54 /* RO */
176 #define ATI_REG_SPDF_DMA_DT_NEXT 0x58 /* RO */
177 #define ATI_REG_SPDF_DMA_DT_CUR 0x5c /* RO */
178 #define ATI_REG_SPDF_DMA_DT_SIZE 0x60
179
180 #define ATI_REG_MODEM_MIRROR 0x7c
181 #define ATI_REG_AUDIO_MIRROR 0x80
182
183 #define ATI_REG_6CH_REORDER 0x84 /* reorder slots for 6ch */
184 #define ATI_REG_6CH_REORDER_EN (1U<<0) /* 3,4,7,8,6,9 -> 3,4,6,9,7,8 */
185
186 #define ATI_REG_FIFO_FLUSH 0x88
187 #define ATI_REG_FIFO_OUT_FLUSH (1U<<0)
188 #define ATI_REG_FIFO_IN_FLUSH (1U<<1)
189
190 /* LINKPTR */
191 #define ATI_REG_LINKPTR_EN (1U<<0)
192
193 /* [INT|OUT|SPDIF]_DMA_DT_SIZE */
194 #define ATI_REG_DMA_DT_SIZE (0xffffU<<0)
195 #define ATI_REG_DMA_FIFO_USED (0x1fU<<16)
196 #define ATI_REG_DMA_FIFO_FREE (0x1fU<<21)
197 #define ATI_REG_DMA_STATE (7U<<26)
198
199
200 #define ATI_MAX_DESCRIPTORS 256 /* max number of descriptor packets */
201
202
203 struct atiixp;
204
205 /*
206 * DMA packate descriptor
207 */
208
209 struct atiixp_dma_desc {
210 u32 addr; /* DMA buffer address */
211 u16 status; /* status bits */
212 u16 size; /* size of the packet in dwords */
213 u32 next; /* address of the next packet descriptor */
214 };
215
216 /*
217 * stream enum
218 */
219 enum { ATI_DMA_PLAYBACK, ATI_DMA_CAPTURE, ATI_DMA_SPDIF, NUM_ATI_DMAS }; /* DMAs */
220 enum { ATI_PCM_OUT, ATI_PCM_IN, ATI_PCM_SPDIF, NUM_ATI_PCMS }; /* AC97 pcm slots */
221 enum { ATI_PCMDEV_ANALOG, ATI_PCMDEV_DIGITAL, NUM_ATI_PCMDEVS }; /* pcm devices */
222
223 #define NUM_ATI_CODECS 3
224
225
226 /*
227 * constants and callbacks for each DMA type
228 */
229 struct atiixp_dma_ops {
230 int type; /* ATI_DMA_XXX */
231 unsigned int llp_offset; /* LINKPTR offset */
232 unsigned int dt_cur; /* DT_CUR offset */
233 /* called from open callback */
234 void (*enable_dma)(struct atiixp *chip, int on);
235 /* called from trigger (START/STOP) */
236 void (*enable_transfer)(struct atiixp *chip, int on);
237 /* called from trigger (STOP only) */
238 void (*flush_dma)(struct atiixp *chip);
239 };
240
241 /*
242 * DMA stream
243 */
244 struct atiixp_dma {
245 const struct atiixp_dma_ops *ops;
246 struct snd_dma_buffer desc_buf;
247 struct snd_pcm_substream *substream; /* assigned PCM substream */
248 unsigned int buf_addr, buf_bytes; /* DMA buffer address, bytes */
249 unsigned int period_bytes, periods;
250 int opened;
251 int running;
252 int suspended;
253 int pcm_open_flag;
254 int ac97_pcm_type; /* index # of ac97_pcm to access, -1 = not used */
255 unsigned int saved_curptr;
256 };
257
258 /*
259 * ATI IXP chip
260 */
261 struct atiixp {
262 struct snd_card *card;
263 struct pci_dev *pci;
264
265 unsigned long addr;
266 void __iomem *remap_addr;
267 int irq;
268
269 struct snd_ac97_bus *ac97_bus;
270 struct snd_ac97 *ac97[NUM_ATI_CODECS];
271
272 spinlock_t reg_lock;
273
274 struct atiixp_dma dmas[NUM_ATI_DMAS];
275 struct ac97_pcm *pcms[NUM_ATI_PCMS];
276 struct snd_pcm *pcmdevs[NUM_ATI_PCMDEVS];
277
278 int max_channels; /* max. channels for PCM out */
279
280 unsigned int codec_not_ready_bits; /* for codec detection */
281
282 int spdif_over_aclink; /* passed from the module option */
283 struct mutex open_mutex; /* playback open mutex */
284 };
285
286
287 /*
288 */
289 static DEFINE_PCI_DEVICE_TABLE(snd_atiixp_ids) = {
290 { PCI_VDEVICE(ATI, 0x4341), 0 }, /* SB200 */
291 { PCI_VDEVICE(ATI, 0x4361), 0 }, /* SB300 */
292 { PCI_VDEVICE(ATI, 0x4370), 0 }, /* SB400 */
293 { PCI_VDEVICE(ATI, 0x4382), 0 }, /* SB600 */
294 { 0, }
295 };
296
297 MODULE_DEVICE_TABLE(pci, snd_atiixp_ids);
298
299 static struct snd_pci_quirk atiixp_quirks[] = {
300 SND_PCI_QUIRK(0x105b, 0x0c81, "Foxconn RC4107MA-RS2", 0),
301 SND_PCI_QUIRK(0x15bd, 0x3100, "DFI RS482", 0),
302 { } /* terminator */
303 };
304
305 /*
306 * lowlevel functions
307 */
308
309 /*
310 * update the bits of the given register.
311 * return 1 if the bits changed.
312 */
313 static int snd_atiixp_update_bits(struct atiixp *chip, unsigned int reg,
314 unsigned int mask, unsigned int value)
315 {
316 void __iomem *addr = chip->remap_addr + reg;
317 unsigned int data, old_data;
318 old_data = data = readl(addr);
319 data &= ~mask;
320 data |= value;
321 if (old_data == data)
322 return 0;
323 writel(data, addr);
324 return 1;
325 }
326
327 /*
328 * macros for easy use
329 */
330 #define atiixp_write(chip,reg,value) \
331 writel(value, chip->remap_addr + ATI_REG_##reg)
332 #define atiixp_read(chip,reg) \
333 readl(chip->remap_addr + ATI_REG_##reg)
334 #define atiixp_update(chip,reg,mask,val) \
335 snd_atiixp_update_bits(chip, ATI_REG_##reg, mask, val)
336
337 /*
338 * handling DMA packets
339 *
340 * we allocate a linear buffer for the DMA, and split it to each packet.
341 * in a future version, a scatter-gather buffer should be implemented.
342 */
343
344 #define ATI_DESC_LIST_SIZE \
345 PAGE_ALIGN(ATI_MAX_DESCRIPTORS * sizeof(struct atiixp_dma_desc))
346
347 /*
348 * build packets ring for the given buffer size.
349 *
350 * IXP handles the buffer descriptors, which are connected as a linked
351 * list. although we can change the list dynamically, in this version,
352 * a static RING of buffer descriptors is used.
353 *
354 * the ring is built in this function, and is set up to the hardware.
355 */
356 static int atiixp_build_dma_packets(struct atiixp *chip, struct atiixp_dma *dma,
357 struct snd_pcm_substream *substream,
358 unsigned int periods,
359 unsigned int period_bytes)
360 {
361 unsigned int i;
362 u32 addr, desc_addr;
363 unsigned long flags;
364
365 if (periods > ATI_MAX_DESCRIPTORS)
366 return -ENOMEM;
367
368 if (dma->desc_buf.area == NULL) {
369 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV,
370 snd_dma_pci_data(chip->pci),
371 ATI_DESC_LIST_SIZE,
372 &dma->desc_buf) < 0)
373 return -ENOMEM;
374 dma->period_bytes = dma->periods = 0; /* clear */
375 }
376
377 if (dma->periods == periods && dma->period_bytes == period_bytes)
378 return 0;
379
380 /* reset DMA before changing the descriptor table */
381 spin_lock_irqsave(&chip->reg_lock, flags);
382 writel(0, chip->remap_addr + dma->ops->llp_offset);
383 dma->ops->enable_dma(chip, 0);
384 dma->ops->enable_dma(chip, 1);
385 spin_unlock_irqrestore(&chip->reg_lock, flags);
386
387 /* fill the entries */
388 addr = (u32)substream->runtime->dma_addr;
389 desc_addr = (u32)dma->desc_buf.addr;
390 for (i = 0; i < periods; i++) {
391 struct atiixp_dma_desc *desc;
392 desc = &((struct atiixp_dma_desc *)dma->desc_buf.area)[i];
393 desc->addr = cpu_to_le32(addr);
394 desc->status = 0;
395 desc->size = period_bytes >> 2; /* in dwords */
396 desc_addr += sizeof(struct atiixp_dma_desc);
397 if (i == periods - 1)
398 desc->next = cpu_to_le32((u32)dma->desc_buf.addr);
399 else
400 desc->next = cpu_to_le32(desc_addr);
401 addr += period_bytes;
402 }
403
404 writel((u32)dma->desc_buf.addr | ATI_REG_LINKPTR_EN,
405 chip->remap_addr + dma->ops->llp_offset);
406
407 dma->period_bytes = period_bytes;
408 dma->periods = periods;
409
410 return 0;
411 }
412
413 /*
414 * remove the ring buffer and release it if assigned
415 */
416 static void atiixp_clear_dma_packets(struct atiixp *chip, struct atiixp_dma *dma,
417 struct snd_pcm_substream *substream)
418 {
419 if (dma->desc_buf.area) {
420 writel(0, chip->remap_addr + dma->ops->llp_offset);
421 snd_dma_free_pages(&dma->desc_buf);
422 dma->desc_buf.area = NULL;
423 }
424 }
425
426 /*
427 * AC97 interface
428 */
429 static int snd_atiixp_acquire_codec(struct atiixp *chip)
430 {
431 int timeout = 1000;
432
433 while (atiixp_read(chip, PHYS_OUT_ADDR) & ATI_REG_PHYS_OUT_ADDR_EN) {
434 if (! timeout--) {
435 snd_printk(KERN_WARNING "atiixp: codec acquire timeout\n");
436 return -EBUSY;
437 }
438 udelay(1);
439 }
440 return 0;
441 }
442
443 static unsigned short snd_atiixp_codec_read(struct atiixp *chip, unsigned short codec, unsigned short reg)
444 {
445 unsigned int data;
446 int timeout;
447
448 if (snd_atiixp_acquire_codec(chip) < 0)
449 return 0xffff;
450 data = (reg << ATI_REG_PHYS_OUT_ADDR_SHIFT) |
451 ATI_REG_PHYS_OUT_ADDR_EN |
452 ATI_REG_PHYS_OUT_RW |
453 codec;
454 atiixp_write(chip, PHYS_OUT_ADDR, data);
455 if (snd_atiixp_acquire_codec(chip) < 0)
456 return 0xffff;
457 timeout = 1000;
458 do {
459 data = atiixp_read(chip, PHYS_IN_ADDR);
460 if (data & ATI_REG_PHYS_IN_READ_FLAG)
461 return data >> ATI_REG_PHYS_IN_DATA_SHIFT;
462 udelay(1);
463 } while (--timeout);
464 /* time out may happen during reset */
465 if (reg < 0x7c)
466 snd_printk(KERN_WARNING "atiixp: codec read timeout (reg %x)\n", reg);
467 return 0xffff;
468 }
469
470
471 static void snd_atiixp_codec_write(struct atiixp *chip, unsigned short codec,
472 unsigned short reg, unsigned short val)
473 {
474 unsigned int data;
475
476 if (snd_atiixp_acquire_codec(chip) < 0)
477 return;
478 data = ((unsigned int)val << ATI_REG_PHYS_OUT_DATA_SHIFT) |
479 ((unsigned int)reg << ATI_REG_PHYS_OUT_ADDR_SHIFT) |
480 ATI_REG_PHYS_OUT_ADDR_EN | codec;
481 atiixp_write(chip, PHYS_OUT_ADDR, data);
482 }
483
484
485 static unsigned short snd_atiixp_ac97_read(struct snd_ac97 *ac97,
486 unsigned short reg)
487 {
488 struct atiixp *chip = ac97->private_data;
489 return snd_atiixp_codec_read(chip, ac97->num, reg);
490
491 }
492
493 static void snd_atiixp_ac97_write(struct snd_ac97 *ac97, unsigned short reg,
494 unsigned short val)
495 {
496 struct atiixp *chip = ac97->private_data;
497 snd_atiixp_codec_write(chip, ac97->num, reg, val);
498 }
499
500 /*
501 * reset AC link
502 */
503 static int snd_atiixp_aclink_reset(struct atiixp *chip)
504 {
505 int timeout;
506
507 /* reset powerdoewn */
508 if (atiixp_update(chip, CMD, ATI_REG_CMD_POWERDOWN, 0))
509 udelay(10);
510
511 /* perform a software reset */
512 atiixp_update(chip, CMD, ATI_REG_CMD_AC_SOFT_RESET, ATI_REG_CMD_AC_SOFT_RESET);
513 atiixp_read(chip, CMD);
514 udelay(10);
515 atiixp_update(chip, CMD, ATI_REG_CMD_AC_SOFT_RESET, 0);
516
517 timeout = 10;
518 while (! (atiixp_read(chip, CMD) & ATI_REG_CMD_ACLINK_ACTIVE)) {
519 /* do a hard reset */
520 atiixp_update(chip, CMD, ATI_REG_CMD_AC_SYNC|ATI_REG_CMD_AC_RESET,
521 ATI_REG_CMD_AC_SYNC);
522 atiixp_read(chip, CMD);
523 mdelay(1);
524 atiixp_update(chip, CMD, ATI_REG_CMD_AC_RESET, ATI_REG_CMD_AC_RESET);
525 if (!--timeout) {
526 snd_printk(KERN_ERR "atiixp: codec reset timeout\n");
527 break;
528 }
529 }
530
531 /* deassert RESET and assert SYNC to make sure */
532 atiixp_update(chip, CMD, ATI_REG_CMD_AC_SYNC|ATI_REG_CMD_AC_RESET,
533 ATI_REG_CMD_AC_SYNC|ATI_REG_CMD_AC_RESET);
534
535 return 0;
536 }
537
538 #ifdef CONFIG_PM_SLEEP
539 static int snd_atiixp_aclink_down(struct atiixp *chip)
540 {
541 // if (atiixp_read(chip, MODEM_MIRROR) & 0x1) /* modem running, too? */
542 // return -EBUSY;
543 atiixp_update(chip, CMD,
544 ATI_REG_CMD_POWERDOWN | ATI_REG_CMD_AC_RESET,
545 ATI_REG_CMD_POWERDOWN);
546 return 0;
547 }
548 #endif
549
550 /*
551 * auto-detection of codecs
552 *
553 * the IXP chip can generate interrupts for the non-existing codecs.
554 * NEW_FRAME interrupt is used to make sure that the interrupt is generated
555 * even if all three codecs are connected.
556 */
557
558 #define ALL_CODEC_NOT_READY \
559 (ATI_REG_ISR_CODEC0_NOT_READY |\
560 ATI_REG_ISR_CODEC1_NOT_READY |\
561 ATI_REG_ISR_CODEC2_NOT_READY)
562 #define CODEC_CHECK_BITS (ALL_CODEC_NOT_READY|ATI_REG_ISR_NEW_FRAME)
563
564 static int ac97_probing_bugs(struct pci_dev *pci)
565 {
566 const struct snd_pci_quirk *q;
567
568 q = snd_pci_quirk_lookup(pci, atiixp_quirks);
569 if (q) {
570 snd_printdd(KERN_INFO
571 "Atiixp quirk for %s. Forcing codec %d\n",
572 snd_pci_quirk_name(q), q->value);
573 return q->value;
574 }
575 /* this hardware doesn't need workarounds. Probe for codec */
576 return -1;
577 }
578
579 static int snd_atiixp_codec_detect(struct atiixp *chip)
580 {
581 int timeout;
582
583 chip->codec_not_ready_bits = 0;
584 if (ac97_codec == -1)
585 ac97_codec = ac97_probing_bugs(chip->pci);
586 if (ac97_codec >= 0) {
587 chip->codec_not_ready_bits |=
588 CODEC_CHECK_BITS ^ (1 << (ac97_codec + 10));
589 return 0;
590 }
591
592 atiixp_write(chip, IER, CODEC_CHECK_BITS);
593 /* wait for the interrupts */
594 timeout = 50;
595 while (timeout-- > 0) {
596 mdelay(1);
597 if (chip->codec_not_ready_bits)
598 break;
599 }
600 atiixp_write(chip, IER, 0); /* disable irqs */
601
602 if ((chip->codec_not_ready_bits & ALL_CODEC_NOT_READY) == ALL_CODEC_NOT_READY) {
603 snd_printk(KERN_ERR "atiixp: no codec detected!\n");
604 return -ENXIO;
605 }
606 return 0;
607 }
608
609
610 /*
611 * enable DMA and irqs
612 */
613 static int snd_atiixp_chip_start(struct atiixp *chip)
614 {
615 unsigned int reg;
616
617 /* set up spdif, enable burst mode */
618 reg = atiixp_read(chip, CMD);
619 reg |= 0x02 << ATI_REG_CMD_SPDF_THRESHOLD_SHIFT;
620 reg |= ATI_REG_CMD_BURST_EN;
621 atiixp_write(chip, CMD, reg);
622
623 reg = atiixp_read(chip, SPDF_CMD);
624 reg &= ~(ATI_REG_SPDF_CMD_LFSR|ATI_REG_SPDF_CMD_SINGLE_CH);
625 atiixp_write(chip, SPDF_CMD, reg);
626
627 /* clear all interrupt source */
628 atiixp_write(chip, ISR, 0xffffffff);
629 /* enable irqs */
630 atiixp_write(chip, IER,
631 ATI_REG_IER_IO_STATUS_EN |
632 ATI_REG_IER_IN_XRUN_EN |
633 ATI_REG_IER_OUT_XRUN_EN |
634 ATI_REG_IER_SPDF_XRUN_EN |
635 ATI_REG_IER_SPDF_STATUS_EN);
636 return 0;
637 }
638
639
640 /*
641 * disable DMA and IRQs
642 */
643 static int snd_atiixp_chip_stop(struct atiixp *chip)
644 {
645 /* clear interrupt source */
646 atiixp_write(chip, ISR, atiixp_read(chip, ISR));
647 /* disable irqs */
648 atiixp_write(chip, IER, 0);
649 return 0;
650 }
651
652
653 /*
654 * PCM section
655 */
656
657 /*
658 * pointer callback simplly reads XXX_DMA_DT_CUR register as the current
659 * position. when SG-buffer is implemented, the offset must be calculated
660 * correctly...
661 */
662 static snd_pcm_uframes_t snd_atiixp_pcm_pointer(struct snd_pcm_substream *substream)
663 {
664 struct atiixp *chip = snd_pcm_substream_chip(substream);
665 struct snd_pcm_runtime *runtime = substream->runtime;
666 struct atiixp_dma *dma = runtime->private_data;
667 unsigned int curptr;
668 int timeout = 1000;
669
670 while (timeout--) {
671 curptr = readl(chip->remap_addr + dma->ops->dt_cur);
672 if (curptr < dma->buf_addr)
673 continue;
674 curptr -= dma->buf_addr;
675 if (curptr >= dma->buf_bytes)
676 continue;
677 return bytes_to_frames(runtime, curptr);
678 }
679 snd_printd("atiixp: invalid DMA pointer read 0x%x (buf=%x)\n",
680 readl(chip->remap_addr + dma->ops->dt_cur), dma->buf_addr);
681 return 0;
682 }
683
684 /*
685 * XRUN detected, and stop the PCM substream
686 */
687 static void snd_atiixp_xrun_dma(struct atiixp *chip, struct atiixp_dma *dma)
688 {
689 if (! dma->substream || ! dma->running)
690 return;
691 snd_printdd("atiixp: XRUN detected (DMA %d)\n", dma->ops->type);
692 snd_pcm_stream_lock(dma->substream);
693 snd_pcm_stop(dma->substream, SNDRV_PCM_STATE_XRUN);
694 snd_pcm_stream_unlock(dma->substream);
695 }
696
697 /*
698 * the period ack. update the substream.
699 */
700 static void snd_atiixp_update_dma(struct atiixp *chip, struct atiixp_dma *dma)
701 {
702 if (! dma->substream || ! dma->running)
703 return;
704 snd_pcm_period_elapsed(dma->substream);
705 }
706
707 /* set BUS_BUSY interrupt bit if any DMA is running */
708 /* call with spinlock held */
709 static void snd_atiixp_check_bus_busy(struct atiixp *chip)
710 {
711 unsigned int bus_busy;
712 if (atiixp_read(chip, CMD) & (ATI_REG_CMD_SEND_EN |
713 ATI_REG_CMD_RECEIVE_EN |
714 ATI_REG_CMD_SPDF_OUT_EN))
715 bus_busy = ATI_REG_IER_SET_BUS_BUSY;
716 else
717 bus_busy = 0;
718 atiixp_update(chip, IER, ATI_REG_IER_SET_BUS_BUSY, bus_busy);
719 }
720
721 /* common trigger callback
722 * calling the lowlevel callbacks in it
723 */
724 static int snd_atiixp_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
725 {
726 struct atiixp *chip = snd_pcm_substream_chip(substream);
727 struct atiixp_dma *dma = substream->runtime->private_data;
728 int err = 0;
729
730 if (snd_BUG_ON(!dma->ops->enable_transfer ||
731 !dma->ops->flush_dma))
732 return -EINVAL;
733
734 spin_lock(&chip->reg_lock);
735 switch (cmd) {
736 case SNDRV_PCM_TRIGGER_START:
737 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
738 case SNDRV_PCM_TRIGGER_RESUME:
739 dma->ops->enable_transfer(chip, 1);
740 dma->running = 1;
741 dma->suspended = 0;
742 break;
743 case SNDRV_PCM_TRIGGER_STOP:
744 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
745 case SNDRV_PCM_TRIGGER_SUSPEND:
746 dma->ops->enable_transfer(chip, 0);
747 dma->running = 0;
748 dma->suspended = cmd == SNDRV_PCM_TRIGGER_SUSPEND;
749 break;
750 default:
751 err = -EINVAL;
752 break;
753 }
754 if (! err) {
755 snd_atiixp_check_bus_busy(chip);
756 if (cmd == SNDRV_PCM_TRIGGER_STOP) {
757 dma->ops->flush_dma(chip);
758 snd_atiixp_check_bus_busy(chip);
759 }
760 }
761 spin_unlock(&chip->reg_lock);
762 return err;
763 }
764
765
766 /*
767 * lowlevel callbacks for each DMA type
768 *
769 * every callback is supposed to be called in chip->reg_lock spinlock
770 */
771
772 /* flush FIFO of analog OUT DMA */
773 static void atiixp_out_flush_dma(struct atiixp *chip)
774 {
775 atiixp_write(chip, FIFO_FLUSH, ATI_REG_FIFO_OUT_FLUSH);
776 }
777
778 /* enable/disable analog OUT DMA */
779 static void atiixp_out_enable_dma(struct atiixp *chip, int on)
780 {
781 unsigned int data;
782 data = atiixp_read(chip, CMD);
783 if (on) {
784 if (data & ATI_REG_CMD_OUT_DMA_EN)
785 return;
786 atiixp_out_flush_dma(chip);
787 data |= ATI_REG_CMD_OUT_DMA_EN;
788 } else
789 data &= ~ATI_REG_CMD_OUT_DMA_EN;
790 atiixp_write(chip, CMD, data);
791 }
792
793 /* start/stop transfer over OUT DMA */
794 static void atiixp_out_enable_transfer(struct atiixp *chip, int on)
795 {
796 atiixp_update(chip, CMD, ATI_REG_CMD_SEND_EN,
797 on ? ATI_REG_CMD_SEND_EN : 0);
798 }
799
800 /* enable/disable analog IN DMA */
801 static void atiixp_in_enable_dma(struct atiixp *chip, int on)
802 {
803 atiixp_update(chip, CMD, ATI_REG_CMD_IN_DMA_EN,
804 on ? ATI_REG_CMD_IN_DMA_EN : 0);
805 }
806
807 /* start/stop analog IN DMA */
808 static void atiixp_in_enable_transfer(struct atiixp *chip, int on)
809 {
810 if (on) {
811 unsigned int data = atiixp_read(chip, CMD);
812 if (! (data & ATI_REG_CMD_RECEIVE_EN)) {
813 data |= ATI_REG_CMD_RECEIVE_EN;
814 #if 0 /* FIXME: this causes the endless loop */
815 /* wait until slot 3/4 are finished */
816 while ((atiixp_read(chip, COUNTER) &
817 ATI_REG_COUNTER_SLOT) != 5)
818 ;
819 #endif
820 atiixp_write(chip, CMD, data);
821 }
822 } else
823 atiixp_update(chip, CMD, ATI_REG_CMD_RECEIVE_EN, 0);
824 }
825
826 /* flush FIFO of analog IN DMA */
827 static void atiixp_in_flush_dma(struct atiixp *chip)
828 {
829 atiixp_write(chip, FIFO_FLUSH, ATI_REG_FIFO_IN_FLUSH);
830 }
831
832 /* enable/disable SPDIF OUT DMA */
833 static void atiixp_spdif_enable_dma(struct atiixp *chip, int on)
834 {
835 atiixp_update(chip, CMD, ATI_REG_CMD_SPDF_DMA_EN,
836 on ? ATI_REG_CMD_SPDF_DMA_EN : 0);
837 }
838
839 /* start/stop SPDIF OUT DMA */
840 static void atiixp_spdif_enable_transfer(struct atiixp *chip, int on)
841 {
842 unsigned int data;
843 data = atiixp_read(chip, CMD);
844 if (on)
845 data |= ATI_REG_CMD_SPDF_OUT_EN;
846 else
847 data &= ~ATI_REG_CMD_SPDF_OUT_EN;
848 atiixp_write(chip, CMD, data);
849 }
850
851 /* flush FIFO of SPDIF OUT DMA */
852 static void atiixp_spdif_flush_dma(struct atiixp *chip)
853 {
854 int timeout;
855
856 /* DMA off, transfer on */
857 atiixp_spdif_enable_dma(chip, 0);
858 atiixp_spdif_enable_transfer(chip, 1);
859
860 timeout = 100;
861 do {
862 if (! (atiixp_read(chip, SPDF_DMA_DT_SIZE) & ATI_REG_DMA_FIFO_USED))
863 break;
864 udelay(1);
865 } while (timeout-- > 0);
866
867 atiixp_spdif_enable_transfer(chip, 0);
868 }
869
870 /* set up slots and formats for SPDIF OUT */
871 static int snd_atiixp_spdif_prepare(struct snd_pcm_substream *substream)
872 {
873 struct atiixp *chip = snd_pcm_substream_chip(substream);
874
875 spin_lock_irq(&chip->reg_lock);
876 if (chip->spdif_over_aclink) {
877 unsigned int data;
878 /* enable slots 10/11 */
879 atiixp_update(chip, CMD, ATI_REG_CMD_SPDF_CONFIG_MASK,
880 ATI_REG_CMD_SPDF_CONFIG_01);
881 data = atiixp_read(chip, OUT_DMA_SLOT) & ~ATI_REG_OUT_DMA_SLOT_MASK;
882 data |= ATI_REG_OUT_DMA_SLOT_BIT(10) |
883 ATI_REG_OUT_DMA_SLOT_BIT(11);
884 data |= 0x04 << ATI_REG_OUT_DMA_THRESHOLD_SHIFT;
885 atiixp_write(chip, OUT_DMA_SLOT, data);
886 atiixp_update(chip, CMD, ATI_REG_CMD_INTERLEAVE_OUT,
887 substream->runtime->format == SNDRV_PCM_FORMAT_S16_LE ?
888 ATI_REG_CMD_INTERLEAVE_OUT : 0);
889 } else {
890 atiixp_update(chip, CMD, ATI_REG_CMD_SPDF_CONFIG_MASK, 0);
891 atiixp_update(chip, CMD, ATI_REG_CMD_INTERLEAVE_SPDF, 0);
892 }
893 spin_unlock_irq(&chip->reg_lock);
894 return 0;
895 }
896
897 /* set up slots and formats for analog OUT */
898 static int snd_atiixp_playback_prepare(struct snd_pcm_substream *substream)
899 {
900 struct atiixp *chip = snd_pcm_substream_chip(substream);
901 unsigned int data;
902
903 spin_lock_irq(&chip->reg_lock);
904 data = atiixp_read(chip, OUT_DMA_SLOT) & ~ATI_REG_OUT_DMA_SLOT_MASK;
905 switch (substream->runtime->channels) {
906 case 8:
907 data |= ATI_REG_OUT_DMA_SLOT_BIT(10) |
908 ATI_REG_OUT_DMA_SLOT_BIT(11);
909 /* fallthru */
910 case 6:
911 data |= ATI_REG_OUT_DMA_SLOT_BIT(7) |
912 ATI_REG_OUT_DMA_SLOT_BIT(8);
913 /* fallthru */
914 case 4:
915 data |= ATI_REG_OUT_DMA_SLOT_BIT(6) |
916 ATI_REG_OUT_DMA_SLOT_BIT(9);
917 /* fallthru */
918 default:
919 data |= ATI_REG_OUT_DMA_SLOT_BIT(3) |
920 ATI_REG_OUT_DMA_SLOT_BIT(4);
921 break;
922 }
923
924 /* set output threshold */
925 data |= 0x04 << ATI_REG_OUT_DMA_THRESHOLD_SHIFT;
926 atiixp_write(chip, OUT_DMA_SLOT, data);
927
928 atiixp_update(chip, CMD, ATI_REG_CMD_INTERLEAVE_OUT,
929 substream->runtime->format == SNDRV_PCM_FORMAT_S16_LE ?
930 ATI_REG_CMD_INTERLEAVE_OUT : 0);
931
932 /*
933 * enable 6 channel re-ordering bit if needed
934 */
935 atiixp_update(chip, 6CH_REORDER, ATI_REG_6CH_REORDER_EN,
936 substream->runtime->channels >= 6 ? ATI_REG_6CH_REORDER_EN: 0);
937
938 spin_unlock_irq(&chip->reg_lock);
939 return 0;
940 }
941
942 /* set up slots and formats for analog IN */
943 static int snd_atiixp_capture_prepare(struct snd_pcm_substream *substream)
944 {
945 struct atiixp *chip = snd_pcm_substream_chip(substream);
946
947 spin_lock_irq(&chip->reg_lock);
948 atiixp_update(chip, CMD, ATI_REG_CMD_INTERLEAVE_IN,
949 substream->runtime->format == SNDRV_PCM_FORMAT_S16_LE ?
950 ATI_REG_CMD_INTERLEAVE_IN : 0);
951 spin_unlock_irq(&chip->reg_lock);
952 return 0;
953 }
954
955 /*
956 * hw_params - allocate the buffer and set up buffer descriptors
957 */
958 static int snd_atiixp_pcm_hw_params(struct snd_pcm_substream *substream,
959 struct snd_pcm_hw_params *hw_params)
960 {
961 struct atiixp *chip = snd_pcm_substream_chip(substream);
962 struct atiixp_dma *dma = substream->runtime->private_data;
963 int err;
964
965 err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
966 if (err < 0)
967 return err;
968 dma->buf_addr = substream->runtime->dma_addr;
969 dma->buf_bytes = params_buffer_bytes(hw_params);
970
971 err = atiixp_build_dma_packets(chip, dma, substream,
972 params_periods(hw_params),
973 params_period_bytes(hw_params));
974 if (err < 0)
975 return err;
976
977 if (dma->ac97_pcm_type >= 0) {
978 struct ac97_pcm *pcm = chip->pcms[dma->ac97_pcm_type];
979 /* PCM is bound to AC97 codec(s)
980 * set up the AC97 codecs
981 */
982 if (dma->pcm_open_flag) {
983 snd_ac97_pcm_close(pcm);
984 dma->pcm_open_flag = 0;
985 }
986 err = snd_ac97_pcm_open(pcm, params_rate(hw_params),
987 params_channels(hw_params),
988 pcm->r[0].slots);
989 if (err >= 0)
990 dma->pcm_open_flag = 1;
991 }
992
993 return err;
994 }
995
996 static int snd_atiixp_pcm_hw_free(struct snd_pcm_substream *substream)
997 {
998 struct atiixp *chip = snd_pcm_substream_chip(substream);
999 struct atiixp_dma *dma = substream->runtime->private_data;
1000
1001 if (dma->pcm_open_flag) {
1002 struct ac97_pcm *pcm = chip->pcms[dma->ac97_pcm_type];
1003 snd_ac97_pcm_close(pcm);
1004 dma->pcm_open_flag = 0;
1005 }
1006 atiixp_clear_dma_packets(chip, dma, substream);
1007 snd_pcm_lib_free_pages(substream);
1008 return 0;
1009 }
1010
1011
1012 /*
1013 * pcm hardware definition, identical for all DMA types
1014 */
1015 static struct snd_pcm_hardware snd_atiixp_pcm_hw =
1016 {
1017 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1018 SNDRV_PCM_INFO_BLOCK_TRANSFER |
1019 SNDRV_PCM_INFO_PAUSE |
1020 SNDRV_PCM_INFO_RESUME |
1021 SNDRV_PCM_INFO_MMAP_VALID),
1022 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE,
1023 .rates = SNDRV_PCM_RATE_48000,
1024 .rate_min = 48000,
1025 .rate_max = 48000,
1026 .channels_min = 2,
1027 .channels_max = 2,
1028 .buffer_bytes_max = 256 * 1024,
1029 .period_bytes_min = 32,
1030 .period_bytes_max = 128 * 1024,
1031 .periods_min = 2,
1032 .periods_max = ATI_MAX_DESCRIPTORS,
1033 };
1034
1035 static int snd_atiixp_pcm_open(struct snd_pcm_substream *substream,
1036 struct atiixp_dma *dma, int pcm_type)
1037 {
1038 struct atiixp *chip = snd_pcm_substream_chip(substream);
1039 struct snd_pcm_runtime *runtime = substream->runtime;
1040 int err;
1041
1042 if (snd_BUG_ON(!dma->ops || !dma->ops->enable_dma))
1043 return -EINVAL;
1044
1045 if (dma->opened)
1046 return -EBUSY;
1047 dma->substream = substream;
1048 runtime->hw = snd_atiixp_pcm_hw;
1049 dma->ac97_pcm_type = pcm_type;
1050 if (pcm_type >= 0) {
1051 runtime->hw.rates = chip->pcms[pcm_type]->rates;
1052 snd_pcm_limit_hw_rates(runtime);
1053 } else {
1054 /* direct SPDIF */
1055 runtime->hw.formats = SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE;
1056 }
1057 if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
1058 return err;
1059 runtime->private_data = dma;
1060
1061 /* enable DMA bits */
1062 spin_lock_irq(&chip->reg_lock);
1063 dma->ops->enable_dma(chip, 1);
1064 spin_unlock_irq(&chip->reg_lock);
1065 dma->opened = 1;
1066
1067 return 0;
1068 }
1069
1070 static int snd_atiixp_pcm_close(struct snd_pcm_substream *substream,
1071 struct atiixp_dma *dma)
1072 {
1073 struct atiixp *chip = snd_pcm_substream_chip(substream);
1074 /* disable DMA bits */
1075 if (snd_BUG_ON(!dma->ops || !dma->ops->enable_dma))
1076 return -EINVAL;
1077 spin_lock_irq(&chip->reg_lock);
1078 dma->ops->enable_dma(chip, 0);
1079 spin_unlock_irq(&chip->reg_lock);
1080 dma->substream = NULL;
1081 dma->opened = 0;
1082 return 0;
1083 }
1084
1085 /*
1086 */
1087 static int snd_atiixp_playback_open(struct snd_pcm_substream *substream)
1088 {
1089 struct atiixp *chip = snd_pcm_substream_chip(substream);
1090 int err;
1091
1092 mutex_lock(&chip->open_mutex);
1093 err = snd_atiixp_pcm_open(substream, &chip->dmas[ATI_DMA_PLAYBACK], 0);
1094 mutex_unlock(&chip->open_mutex);
1095 if (err < 0)
1096 return err;
1097 substream->runtime->hw.channels_max = chip->max_channels;
1098 if (chip->max_channels > 2)
1099 /* channels must be even */
1100 snd_pcm_hw_constraint_step(substream->runtime, 0,
1101 SNDRV_PCM_HW_PARAM_CHANNELS, 2);
1102 return 0;
1103 }
1104
1105 static int snd_atiixp_playback_close(struct snd_pcm_substream *substream)
1106 {
1107 struct atiixp *chip = snd_pcm_substream_chip(substream);
1108 int err;
1109 mutex_lock(&chip->open_mutex);
1110 err = snd_atiixp_pcm_close(substream, &chip->dmas[ATI_DMA_PLAYBACK]);
1111 mutex_unlock(&chip->open_mutex);
1112 return err;
1113 }
1114
1115 static int snd_atiixp_capture_open(struct snd_pcm_substream *substream)
1116 {
1117 struct atiixp *chip = snd_pcm_substream_chip(substream);
1118 return snd_atiixp_pcm_open(substream, &chip->dmas[ATI_DMA_CAPTURE], 1);
1119 }
1120
1121 static int snd_atiixp_capture_close(struct snd_pcm_substream *substream)
1122 {
1123 struct atiixp *chip = snd_pcm_substream_chip(substream);
1124 return snd_atiixp_pcm_close(substream, &chip->dmas[ATI_DMA_CAPTURE]);
1125 }
1126
1127 static int snd_atiixp_spdif_open(struct snd_pcm_substream *substream)
1128 {
1129 struct atiixp *chip = snd_pcm_substream_chip(substream);
1130 int err;
1131 mutex_lock(&chip->open_mutex);
1132 if (chip->spdif_over_aclink) /* share DMA_PLAYBACK */
1133 err = snd_atiixp_pcm_open(substream, &chip->dmas[ATI_DMA_PLAYBACK], 2);
1134 else
1135 err = snd_atiixp_pcm_open(substream, &chip->dmas[ATI_DMA_SPDIF], -1);
1136 mutex_unlock(&chip->open_mutex);
1137 return err;
1138 }
1139
1140 static int snd_atiixp_spdif_close(struct snd_pcm_substream *substream)
1141 {
1142 struct atiixp *chip = snd_pcm_substream_chip(substream);
1143 int err;
1144 mutex_lock(&chip->open_mutex);
1145 if (chip->spdif_over_aclink)
1146 err = snd_atiixp_pcm_close(substream, &chip->dmas[ATI_DMA_PLAYBACK]);
1147 else
1148 err = snd_atiixp_pcm_close(substream, &chip->dmas[ATI_DMA_SPDIF]);
1149 mutex_unlock(&chip->open_mutex);
1150 return err;
1151 }
1152
1153 /* AC97 playback */
1154 static struct snd_pcm_ops snd_atiixp_playback_ops = {
1155 .open = snd_atiixp_playback_open,
1156 .close = snd_atiixp_playback_close,
1157 .ioctl = snd_pcm_lib_ioctl,
1158 .hw_params = snd_atiixp_pcm_hw_params,
1159 .hw_free = snd_atiixp_pcm_hw_free,
1160 .prepare = snd_atiixp_playback_prepare,
1161 .trigger = snd_atiixp_pcm_trigger,
1162 .pointer = snd_atiixp_pcm_pointer,
1163 };
1164
1165 /* AC97 capture */
1166 static struct snd_pcm_ops snd_atiixp_capture_ops = {
1167 .open = snd_atiixp_capture_open,
1168 .close = snd_atiixp_capture_close,
1169 .ioctl = snd_pcm_lib_ioctl,
1170 .hw_params = snd_atiixp_pcm_hw_params,
1171 .hw_free = snd_atiixp_pcm_hw_free,
1172 .prepare = snd_atiixp_capture_prepare,
1173 .trigger = snd_atiixp_pcm_trigger,
1174 .pointer = snd_atiixp_pcm_pointer,
1175 };
1176
1177 /* SPDIF playback */
1178 static struct snd_pcm_ops snd_atiixp_spdif_ops = {
1179 .open = snd_atiixp_spdif_open,
1180 .close = snd_atiixp_spdif_close,
1181 .ioctl = snd_pcm_lib_ioctl,
1182 .hw_params = snd_atiixp_pcm_hw_params,
1183 .hw_free = snd_atiixp_pcm_hw_free,
1184 .prepare = snd_atiixp_spdif_prepare,
1185 .trigger = snd_atiixp_pcm_trigger,
1186 .pointer = snd_atiixp_pcm_pointer,
1187 };
1188
1189 static struct ac97_pcm atiixp_pcm_defs[] = {
1190 /* front PCM */
1191 {
1192 .exclusive = 1,
1193 .r = { {
1194 .slots = (1 << AC97_SLOT_PCM_LEFT) |
1195 (1 << AC97_SLOT_PCM_RIGHT) |
1196 (1 << AC97_SLOT_PCM_CENTER) |
1197 (1 << AC97_SLOT_PCM_SLEFT) |
1198 (1 << AC97_SLOT_PCM_SRIGHT) |
1199 (1 << AC97_SLOT_LFE)
1200 }
1201 }
1202 },
1203 /* PCM IN #1 */
1204 {
1205 .stream = 1,
1206 .exclusive = 1,
1207 .r = { {
1208 .slots = (1 << AC97_SLOT_PCM_LEFT) |
1209 (1 << AC97_SLOT_PCM_RIGHT)
1210 }
1211 }
1212 },
1213 /* S/PDIF OUT (optional) */
1214 {
1215 .exclusive = 1,
1216 .spdif = 1,
1217 .r = { {
1218 .slots = (1 << AC97_SLOT_SPDIF_LEFT2) |
1219 (1 << AC97_SLOT_SPDIF_RIGHT2)
1220 }
1221 }
1222 },
1223 };
1224
1225 static struct atiixp_dma_ops snd_atiixp_playback_dma_ops = {
1226 .type = ATI_DMA_PLAYBACK,
1227 .llp_offset = ATI_REG_OUT_DMA_LINKPTR,
1228 .dt_cur = ATI_REG_OUT_DMA_DT_CUR,
1229 .enable_dma = atiixp_out_enable_dma,
1230 .enable_transfer = atiixp_out_enable_transfer,
1231 .flush_dma = atiixp_out_flush_dma,
1232 };
1233
1234 static struct atiixp_dma_ops snd_atiixp_capture_dma_ops = {
1235 .type = ATI_DMA_CAPTURE,
1236 .llp_offset = ATI_REG_IN_DMA_LINKPTR,
1237 .dt_cur = ATI_REG_IN_DMA_DT_CUR,
1238 .enable_dma = atiixp_in_enable_dma,
1239 .enable_transfer = atiixp_in_enable_transfer,
1240 .flush_dma = atiixp_in_flush_dma,
1241 };
1242
1243 static struct atiixp_dma_ops snd_atiixp_spdif_dma_ops = {
1244 .type = ATI_DMA_SPDIF,
1245 .llp_offset = ATI_REG_SPDF_DMA_LINKPTR,
1246 .dt_cur = ATI_REG_SPDF_DMA_DT_CUR,
1247 .enable_dma = atiixp_spdif_enable_dma,
1248 .enable_transfer = atiixp_spdif_enable_transfer,
1249 .flush_dma = atiixp_spdif_flush_dma,
1250 };
1251
1252
1253 static int snd_atiixp_pcm_new(struct atiixp *chip)
1254 {
1255 struct snd_pcm *pcm;
1256 struct snd_pcm_chmap *chmap;
1257 struct snd_ac97_bus *pbus = chip->ac97_bus;
1258 int err, i, num_pcms;
1259
1260 /* initialize constants */
1261 chip->dmas[ATI_DMA_PLAYBACK].ops = &snd_atiixp_playback_dma_ops;
1262 chip->dmas[ATI_DMA_CAPTURE].ops = &snd_atiixp_capture_dma_ops;
1263 if (! chip->spdif_over_aclink)
1264 chip->dmas[ATI_DMA_SPDIF].ops = &snd_atiixp_spdif_dma_ops;
1265
1266 /* assign AC97 pcm */
1267 if (chip->spdif_over_aclink)
1268 num_pcms = 3;
1269 else
1270 num_pcms = 2;
1271 err = snd_ac97_pcm_assign(pbus, num_pcms, atiixp_pcm_defs);
1272 if (err < 0)
1273 return err;
1274 for (i = 0; i < num_pcms; i++)
1275 chip->pcms[i] = &pbus->pcms[i];
1276
1277 chip->max_channels = 2;
1278 if (pbus->pcms[ATI_PCM_OUT].r[0].slots & (1 << AC97_SLOT_PCM_SLEFT)) {
1279 if (pbus->pcms[ATI_PCM_OUT].r[0].slots & (1 << AC97_SLOT_LFE))
1280 chip->max_channels = 6;
1281 else
1282 chip->max_channels = 4;
1283 }
1284
1285 /* PCM #0: analog I/O */
1286 err = snd_pcm_new(chip->card, "ATI IXP AC97",
1287 ATI_PCMDEV_ANALOG, 1, 1, &pcm);
1288 if (err < 0)
1289 return err;
1290 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_atiixp_playback_ops);
1291 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_atiixp_capture_ops);
1292 pcm->private_data = chip;
1293 strcpy(pcm->name, "ATI IXP AC97");
1294 chip->pcmdevs[ATI_PCMDEV_ANALOG] = pcm;
1295
1296 snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1297 snd_dma_pci_data(chip->pci),
1298 64*1024, 128*1024);
1299
1300 err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK,
1301 snd_pcm_alt_chmaps, chip->max_channels, 0,
1302 &chmap);
1303 if (err < 0)
1304 return err;
1305 chmap->channel_mask = SND_PCM_CHMAP_MASK_2468;
1306 chip->ac97[0]->chmaps[SNDRV_PCM_STREAM_PLAYBACK] = chmap;
1307
1308 /* no SPDIF support on codec? */
1309 if (chip->pcms[ATI_PCM_SPDIF] && ! chip->pcms[ATI_PCM_SPDIF]->rates)
1310 return 0;
1311
1312 /* FIXME: non-48k sample rate doesn't work on my test machine with AD1888 */
1313 if (chip->pcms[ATI_PCM_SPDIF])
1314 chip->pcms[ATI_PCM_SPDIF]->rates = SNDRV_PCM_RATE_48000;
1315
1316 /* PCM #1: spdif playback */
1317 err = snd_pcm_new(chip->card, "ATI IXP IEC958",
1318 ATI_PCMDEV_DIGITAL, 1, 0, &pcm);
1319 if (err < 0)
1320 return err;
1321 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_atiixp_spdif_ops);
1322 pcm->private_data = chip;
1323 if (chip->spdif_over_aclink)
1324 strcpy(pcm->name, "ATI IXP IEC958 (AC97)");
1325 else
1326 strcpy(pcm->name, "ATI IXP IEC958 (Direct)");
1327 chip->pcmdevs[ATI_PCMDEV_DIGITAL] = pcm;
1328
1329 snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1330 snd_dma_pci_data(chip->pci),
1331 64*1024, 128*1024);
1332
1333 /* pre-select AC97 SPDIF slots 10/11 */
1334 for (i = 0; i < NUM_ATI_CODECS; i++) {
1335 if (chip->ac97[i])
1336 snd_ac97_update_bits(chip->ac97[i],
1337 AC97_EXTENDED_STATUS,
1338 0x03 << 4, 0x03 << 4);
1339 }
1340
1341 return 0;
1342 }
1343
1344
1345
1346 /*
1347 * interrupt handler
1348 */
1349 static irqreturn_t snd_atiixp_interrupt(int irq, void *dev_id)
1350 {
1351 struct atiixp *chip = dev_id;
1352 unsigned int status;
1353
1354 status = atiixp_read(chip, ISR);
1355
1356 if (! status)
1357 return IRQ_NONE;
1358
1359 /* process audio DMA */
1360 if (status & ATI_REG_ISR_OUT_XRUN)
1361 snd_atiixp_xrun_dma(chip, &chip->dmas[ATI_DMA_PLAYBACK]);
1362 else if (status & ATI_REG_ISR_OUT_STATUS)
1363 snd_atiixp_update_dma(chip, &chip->dmas[ATI_DMA_PLAYBACK]);
1364 if (status & ATI_REG_ISR_IN_XRUN)
1365 snd_atiixp_xrun_dma(chip, &chip->dmas[ATI_DMA_CAPTURE]);
1366 else if (status & ATI_REG_ISR_IN_STATUS)
1367 snd_atiixp_update_dma(chip, &chip->dmas[ATI_DMA_CAPTURE]);
1368 if (! chip->spdif_over_aclink) {
1369 if (status & ATI_REG_ISR_SPDF_XRUN)
1370 snd_atiixp_xrun_dma(chip, &chip->dmas[ATI_DMA_SPDIF]);
1371 else if (status & ATI_REG_ISR_SPDF_STATUS)
1372 snd_atiixp_update_dma(chip, &chip->dmas[ATI_DMA_SPDIF]);
1373 }
1374
1375 /* for codec detection */
1376 if (status & CODEC_CHECK_BITS) {
1377 unsigned int detected;
1378 detected = status & CODEC_CHECK_BITS;
1379 spin_lock(&chip->reg_lock);
1380 chip->codec_not_ready_bits |= detected;
1381 atiixp_update(chip, IER, detected, 0); /* disable the detected irqs */
1382 spin_unlock(&chip->reg_lock);
1383 }
1384
1385 /* ack */
1386 atiixp_write(chip, ISR, status);
1387
1388 return IRQ_HANDLED;
1389 }
1390
1391
1392 /*
1393 * ac97 mixer section
1394 */
1395
1396 static struct ac97_quirk ac97_quirks[] = {
1397 {
1398 .subvendor = 0x103c,
1399 .subdevice = 0x006b,
1400 .name = "HP Pavilion ZV5030US",
1401 .type = AC97_TUNE_MUTE_LED
1402 },
1403 {
1404 .subvendor = 0x103c,
1405 .subdevice = 0x308b,
1406 .name = "HP nx6125",
1407 .type = AC97_TUNE_MUTE_LED
1408 },
1409 {
1410 .subvendor = 0x103c,
1411 .subdevice = 0x3091,
1412 .name = "unknown HP",
1413 .type = AC97_TUNE_MUTE_LED
1414 },
1415 { } /* terminator */
1416 };
1417
1418 static int snd_atiixp_mixer_new(struct atiixp *chip, int clock,
1419 const char *quirk_override)
1420 {
1421 struct snd_ac97_bus *pbus;
1422 struct snd_ac97_template ac97;
1423 int i, err;
1424 int codec_count;
1425 static struct snd_ac97_bus_ops ops = {
1426 .write = snd_atiixp_ac97_write,
1427 .read = snd_atiixp_ac97_read,
1428 };
1429 static unsigned int codec_skip[NUM_ATI_CODECS] = {
1430 ATI_REG_ISR_CODEC0_NOT_READY,
1431 ATI_REG_ISR_CODEC1_NOT_READY,
1432 ATI_REG_ISR_CODEC2_NOT_READY,
1433 };
1434
1435 if (snd_atiixp_codec_detect(chip) < 0)
1436 return -ENXIO;
1437
1438 if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &pbus)) < 0)
1439 return err;
1440 pbus->clock = clock;
1441 chip->ac97_bus = pbus;
1442
1443 codec_count = 0;
1444 for (i = 0; i < NUM_ATI_CODECS; i++) {
1445 if (chip->codec_not_ready_bits & codec_skip[i])
1446 continue;
1447 memset(&ac97, 0, sizeof(ac97));
1448 ac97.private_data = chip;
1449 ac97.pci = chip->pci;
1450 ac97.num = i;
1451 ac97.scaps = AC97_SCAP_SKIP_MODEM | AC97_SCAP_POWER_SAVE;
1452 if (! chip->spdif_over_aclink)
1453 ac97.scaps |= AC97_SCAP_NO_SPDIF;
1454 if ((err = snd_ac97_mixer(pbus, &ac97, &chip->ac97[i])) < 0) {
1455 chip->ac97[i] = NULL; /* to be sure */
1456 snd_printdd("atiixp: codec %d not available for audio\n", i);
1457 continue;
1458 }
1459 codec_count++;
1460 }
1461
1462 if (! codec_count) {
1463 snd_printk(KERN_ERR "atiixp: no codec available\n");
1464 return -ENODEV;
1465 }
1466
1467 snd_ac97_tune_hardware(chip->ac97[0], ac97_quirks, quirk_override);
1468
1469 return 0;
1470 }
1471
1472
1473 #ifdef CONFIG_PM_SLEEP
1474 /*
1475 * power management
1476 */
1477 static int snd_atiixp_suspend(struct device *dev)
1478 {
1479 struct pci_dev *pci = to_pci_dev(dev);
1480 struct snd_card *card = dev_get_drvdata(dev);
1481 struct atiixp *chip = card->private_data;
1482 int i;
1483
1484 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
1485 for (i = 0; i < NUM_ATI_PCMDEVS; i++)
1486 if (chip->pcmdevs[i]) {
1487 struct atiixp_dma *dma = &chip->dmas[i];
1488 if (dma->substream && dma->running)
1489 dma->saved_curptr = readl(chip->remap_addr +
1490 dma->ops->dt_cur);
1491 snd_pcm_suspend_all(chip->pcmdevs[i]);
1492 }
1493 for (i = 0; i < NUM_ATI_CODECS; i++)
1494 snd_ac97_suspend(chip->ac97[i]);
1495 snd_atiixp_aclink_down(chip);
1496 snd_atiixp_chip_stop(chip);
1497
1498 pci_disable_device(pci);
1499 pci_save_state(pci);
1500 pci_set_power_state(pci, PCI_D3hot);
1501 return 0;
1502 }
1503
1504 static int snd_atiixp_resume(struct device *dev)
1505 {
1506 struct pci_dev *pci = to_pci_dev(dev);
1507 struct snd_card *card = dev_get_drvdata(dev);
1508 struct atiixp *chip = card->private_data;
1509 int i;
1510
1511 pci_set_power_state(pci, PCI_D0);
1512 pci_restore_state(pci);
1513 if (pci_enable_device(pci) < 0) {
1514 printk(KERN_ERR "atiixp: pci_enable_device failed, "
1515 "disabling device\n");
1516 snd_card_disconnect(card);
1517 return -EIO;
1518 }
1519 pci_set_master(pci);
1520
1521 snd_atiixp_aclink_reset(chip);
1522 snd_atiixp_chip_start(chip);
1523
1524 for (i = 0; i < NUM_ATI_CODECS; i++)
1525 snd_ac97_resume(chip->ac97[i]);
1526
1527 for (i = 0; i < NUM_ATI_PCMDEVS; i++)
1528 if (chip->pcmdevs[i]) {
1529 struct atiixp_dma *dma = &chip->dmas[i];
1530 if (dma->substream && dma->suspended) {
1531 dma->ops->enable_dma(chip, 1);
1532 dma->substream->ops->prepare(dma->substream);
1533 writel((u32)dma->desc_buf.addr | ATI_REG_LINKPTR_EN,
1534 chip->remap_addr + dma->ops->llp_offset);
1535 writel(dma->saved_curptr, chip->remap_addr +
1536 dma->ops->dt_cur);
1537 }
1538 }
1539
1540 snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1541 return 0;
1542 }
1543
1544 static SIMPLE_DEV_PM_OPS(snd_atiixp_pm, snd_atiixp_suspend, snd_atiixp_resume);
1545 #define SND_ATIIXP_PM_OPS &snd_atiixp_pm
1546 #else
1547 #define SND_ATIIXP_PM_OPS NULL
1548 #endif /* CONFIG_PM_SLEEP */
1549
1550
1551 #ifdef CONFIG_PROC_FS
1552 /*
1553 * proc interface for register dump
1554 */
1555
1556 static void snd_atiixp_proc_read(struct snd_info_entry *entry,
1557 struct snd_info_buffer *buffer)
1558 {
1559 struct atiixp *chip = entry->private_data;
1560 int i;
1561
1562 for (i = 0; i < 256; i += 4)
1563 snd_iprintf(buffer, "%02x: %08x\n", i, readl(chip->remap_addr + i));
1564 }
1565
1566 static void snd_atiixp_proc_init(struct atiixp *chip)
1567 {
1568 struct snd_info_entry *entry;
1569
1570 if (! snd_card_proc_new(chip->card, "atiixp", &entry))
1571 snd_info_set_text_ops(entry, chip, snd_atiixp_proc_read);
1572 }
1573 #else /* !CONFIG_PROC_FS */
1574 #define snd_atiixp_proc_init(chip)
1575 #endif
1576
1577
1578 /*
1579 * destructor
1580 */
1581
1582 static int snd_atiixp_free(struct atiixp *chip)
1583 {
1584 if (chip->irq < 0)
1585 goto __hw_end;
1586 snd_atiixp_chip_stop(chip);
1587
1588 __hw_end:
1589 if (chip->irq >= 0)
1590 free_irq(chip->irq, chip);
1591 if (chip->remap_addr)
1592 iounmap(chip->remap_addr);
1593 pci_release_regions(chip->pci);
1594 pci_disable_device(chip->pci);
1595 kfree(chip);
1596 return 0;
1597 }
1598
1599 static int snd_atiixp_dev_free(struct snd_device *device)
1600 {
1601 struct atiixp *chip = device->device_data;
1602 return snd_atiixp_free(chip);
1603 }
1604
1605 /*
1606 * constructor for chip instance
1607 */
1608 static int snd_atiixp_create(struct snd_card *card,
1609 struct pci_dev *pci,
1610 struct atiixp **r_chip)
1611 {
1612 static struct snd_device_ops ops = {
1613 .dev_free = snd_atiixp_dev_free,
1614 };
1615 struct atiixp *chip;
1616 int err;
1617
1618 if ((err = pci_enable_device(pci)) < 0)
1619 return err;
1620
1621 chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1622 if (chip == NULL) {
1623 pci_disable_device(pci);
1624 return -ENOMEM;
1625 }
1626
1627 spin_lock_init(&chip->reg_lock);
1628 mutex_init(&chip->open_mutex);
1629 chip->card = card;
1630 chip->pci = pci;
1631 chip->irq = -1;
1632 if ((err = pci_request_regions(pci, "ATI IXP AC97")) < 0) {
1633 pci_disable_device(pci);
1634 kfree(chip);
1635 return err;
1636 }
1637 chip->addr = pci_resource_start(pci, 0);
1638 chip->remap_addr = pci_ioremap_bar(pci, 0);
1639 if (chip->remap_addr == NULL) {
1640 snd_printk(KERN_ERR "AC'97 space ioremap problem\n");
1641 snd_atiixp_free(chip);
1642 return -EIO;
1643 }
1644
1645 if (request_irq(pci->irq, snd_atiixp_interrupt, IRQF_SHARED,
1646 KBUILD_MODNAME, chip)) {
1647 snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq);
1648 snd_atiixp_free(chip);
1649 return -EBUSY;
1650 }
1651 chip->irq = pci->irq;
1652 pci_set_master(pci);
1653 synchronize_irq(chip->irq);
1654
1655 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1656 snd_atiixp_free(chip);
1657 return err;
1658 }
1659
1660 snd_card_set_dev(card, &pci->dev);
1661
1662 *r_chip = chip;
1663 return 0;
1664 }
1665
1666
1667 static int snd_atiixp_probe(struct pci_dev *pci,
1668 const struct pci_device_id *pci_id)
1669 {
1670 struct snd_card *card;
1671 struct atiixp *chip;
1672 int err;
1673
1674 err = snd_card_create(index, id, THIS_MODULE, 0, &card);
1675 if (err < 0)
1676 return err;
1677
1678 strcpy(card->driver, spdif_aclink ? "ATIIXP" : "ATIIXP-SPDMA");
1679 strcpy(card->shortname, "ATI IXP");
1680 if ((err = snd_atiixp_create(card, pci, &chip)) < 0)
1681 goto __error;
1682 card->private_data = chip;
1683
1684 if ((err = snd_atiixp_aclink_reset(chip)) < 0)
1685 goto __error;
1686
1687 chip->spdif_over_aclink = spdif_aclink;
1688
1689 if ((err = snd_atiixp_mixer_new(chip, ac97_clock, ac97_quirk)) < 0)
1690 goto __error;
1691
1692 if ((err = snd_atiixp_pcm_new(chip)) < 0)
1693 goto __error;
1694
1695 snd_atiixp_proc_init(chip);
1696
1697 snd_atiixp_chip_start(chip);
1698
1699 snprintf(card->longname, sizeof(card->longname),
1700 "%s rev %x with %s at %#lx, irq %i", card->shortname,
1701 pci->revision,
1702 chip->ac97[0] ? snd_ac97_get_short_name(chip->ac97[0]) : "?",
1703 chip->addr, chip->irq);
1704
1705 if ((err = snd_card_register(card)) < 0)
1706 goto __error;
1707
1708 pci_set_drvdata(pci, card);
1709 return 0;
1710
1711 __error:
1712 snd_card_free(card);
1713 return err;
1714 }
1715
1716 static void snd_atiixp_remove(struct pci_dev *pci)
1717 {
1718 snd_card_free(pci_get_drvdata(pci));
1719 }
1720
1721 static struct pci_driver atiixp_driver = {
1722 .name = KBUILD_MODNAME,
1723 .id_table = snd_atiixp_ids,
1724 .probe = snd_atiixp_probe,
1725 .remove = snd_atiixp_remove,
1726 .driver = {
1727 .pm = SND_ATIIXP_PM_OPS,
1728 },
1729 };
1730
1731 module_pci_driver(atiixp_driver);
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