1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * ALSA driver for ATI IXP 150/200/250 AC97 modem controllers
4 *
5 * Copyright (c) 2004 Takashi Iwai <tiwai@suse.de>
6 */
7
8 #include <linux/io.h>
9 #include <linux/delay.h>
10 #include <linux/interrupt.h>
11 #include <linux/init.h>
12 #include <linux/pci.h>
13 #include <linux/slab.h>
14 #include <linux/module.h>
15 #include <linux/mutex.h>
16 #include <sound/core.h>
17 #include <sound/pcm.h>
18 #include <sound/pcm_params.h>
19 #include <sound/info.h>
20 #include <sound/ac97_codec.h>
21 #include <sound/initval.h>
22
23 MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>");
24 MODULE_DESCRIPTION("ATI IXP MC97 controller");
25 MODULE_LICENSE("GPL");
26
27 static int index = -2; /* Exclude the first card */
28 static char *id = SNDRV_DEFAULT_STR1; /* ID for this card */
29 static int ac97_clock = 48000;
30
31 module_param(index, int, 0444);
32 MODULE_PARM_DESC(index, "Index value for ATI IXP controller.");
33 module_param(id, charp, 0444);
34 MODULE_PARM_DESC(id, "ID string for ATI IXP controller.");
35 module_param(ac97_clock, int, 0444);
36 MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz).");
37
38 /* just for backward compatibility */
39 static bool enable;
40 module_param(enable, bool, 0444);
41
42
43 /*
44 */
45
46 #define ATI_REG_ISR 0x00 /* interrupt source */
47 #define ATI_REG_ISR_MODEM_IN_XRUN (1U<<0)
48 #define ATI_REG_ISR_MODEM_IN_STATUS (1U<<1)
49 #define ATI_REG_ISR_MODEM_OUT1_XRUN (1U<<2)
50 #define ATI_REG_ISR_MODEM_OUT1_STATUS (1U<<3)
51 #define ATI_REG_ISR_MODEM_OUT2_XRUN (1U<<4)
52 #define ATI_REG_ISR_MODEM_OUT2_STATUS (1U<<5)
53 #define ATI_REG_ISR_MODEM_OUT3_XRUN (1U<<6)
54 #define ATI_REG_ISR_MODEM_OUT3_STATUS (1U<<7)
55 #define ATI_REG_ISR_PHYS_INTR (1U<<8)
56 #define ATI_REG_ISR_PHYS_MISMATCH (1U<<9)
57 #define ATI_REG_ISR_CODEC0_NOT_READY (1U<<10)
58 #define ATI_REG_ISR_CODEC1_NOT_READY (1U<<11)
59 #define ATI_REG_ISR_CODEC2_NOT_READY (1U<<12)
60 #define ATI_REG_ISR_NEW_FRAME (1U<<13)
61 #define ATI_REG_ISR_MODEM_GPIO_DATA (1U<<14)
62
63 #define ATI_REG_IER 0x04 /* interrupt enable */
64 #define ATI_REG_IER_MODEM_IN_XRUN_EN (1U<<0)
65 #define ATI_REG_IER_MODEM_STATUS_EN (1U<<1)
66 #define ATI_REG_IER_MODEM_OUT1_XRUN_EN (1U<<2)
67 #define ATI_REG_IER_MODEM_OUT2_XRUN_EN (1U<<4)
68 #define ATI_REG_IER_MODEM_OUT3_XRUN_EN (1U<<6)
69 #define ATI_REG_IER_PHYS_INTR_EN (1U<<8)
70 #define ATI_REG_IER_PHYS_MISMATCH_EN (1U<<9)
71 #define ATI_REG_IER_CODEC0_INTR_EN (1U<<10)
72 #define ATI_REG_IER_CODEC1_INTR_EN (1U<<11)
73 #define ATI_REG_IER_CODEC2_INTR_EN (1U<<12)
74 #define ATI_REG_IER_NEW_FRAME_EN (1U<<13) /* (RO */
75 #define ATI_REG_IER_MODEM_GPIO_DATA_EN (1U<<14) /* (WO) modem is running */
76 #define ATI_REG_IER_MODEM_SET_BUS_BUSY (1U<<15)
77
78 #define ATI_REG_CMD 0x08 /* command */
79 #define ATI_REG_CMD_POWERDOWN (1U<<0)
80 #define ATI_REG_CMD_MODEM_RECEIVE_EN (1U<<1) /* modem only */
81 #define ATI_REG_CMD_MODEM_SEND1_EN (1U<<2) /* modem only */
82 #define ATI_REG_CMD_MODEM_SEND2_EN (1U<<3) /* modem only */
83 #define ATI_REG_CMD_MODEM_SEND3_EN (1U<<4) /* modem only */
84 #define ATI_REG_CMD_MODEM_STATUS_MEM (1U<<5) /* modem only */
85 #define ATI_REG_CMD_MODEM_IN_DMA_EN (1U<<8) /* modem only */
86 #define ATI_REG_CMD_MODEM_OUT_DMA1_EN (1U<<9) /* modem only */
87 #define ATI_REG_CMD_MODEM_OUT_DMA2_EN (1U<<10) /* modem only */
88 #define ATI_REG_CMD_MODEM_OUT_DMA3_EN (1U<<11) /* modem only */
89 #define ATI_REG_CMD_AUDIO_PRESENT (1U<<20)
90 #define ATI_REG_CMD_MODEM_GPIO_THRU_DMA (1U<<22) /* modem only */
91 #define ATI_REG_CMD_LOOPBACK_EN (1U<<23)
92 #define ATI_REG_CMD_PACKED_DIS (1U<<24)
93 #define ATI_REG_CMD_BURST_EN (1U<<25)
94 #define ATI_REG_CMD_PANIC_EN (1U<<26)
95 #define ATI_REG_CMD_MODEM_PRESENT (1U<<27)
96 #define ATI_REG_CMD_ACLINK_ACTIVE (1U<<28)
97 #define ATI_REG_CMD_AC_SOFT_RESET (1U<<29)
98 #define ATI_REG_CMD_AC_SYNC (1U<<30)
99 #define ATI_REG_CMD_AC_RESET (1U<<31)
100
101 #define ATI_REG_PHYS_OUT_ADDR 0x0c
102 #define ATI_REG_PHYS_OUT_CODEC_MASK (3U<<0)
103 #define ATI_REG_PHYS_OUT_RW (1U<<2)
104 #define ATI_REG_PHYS_OUT_ADDR_EN (1U<<8)
105 #define ATI_REG_PHYS_OUT_ADDR_SHIFT 9
106 #define ATI_REG_PHYS_OUT_DATA_SHIFT 16
107
108 #define ATI_REG_PHYS_IN_ADDR 0x10
109 #define ATI_REG_PHYS_IN_READ_FLAG (1U<<8)
110 #define ATI_REG_PHYS_IN_ADDR_SHIFT 9
111 #define ATI_REG_PHYS_IN_DATA_SHIFT 16
112
113 #define ATI_REG_SLOTREQ 0x14
114
115 #define ATI_REG_COUNTER 0x18
116 #define ATI_REG_COUNTER_SLOT (3U<<0) /* slot # */
117 #define ATI_REG_COUNTER_BITCLOCK (31U<<8)
118
119 #define ATI_REG_IN_FIFO_THRESHOLD 0x1c
120
121 #define ATI_REG_MODEM_IN_DMA_LINKPTR 0x20
122 #define ATI_REG_MODEM_IN_DMA_DT_START 0x24 /* RO */
123 #define ATI_REG_MODEM_IN_DMA_DT_NEXT 0x28 /* RO */
124 #define ATI_REG_MODEM_IN_DMA_DT_CUR 0x2c /* RO */
125 #define ATI_REG_MODEM_IN_DMA_DT_SIZE 0x30
126 #define ATI_REG_MODEM_OUT_FIFO 0x34 /* output threshold */
127 #define ATI_REG_MODEM_OUT1_DMA_THRESHOLD_MASK (0xf<<16)
128 #define ATI_REG_MODEM_OUT1_DMA_THRESHOLD_SHIFT 16
129 #define ATI_REG_MODEM_OUT_DMA1_LINKPTR 0x38
130 #define ATI_REG_MODEM_OUT_DMA2_LINKPTR 0x3c
131 #define ATI_REG_MODEM_OUT_DMA3_LINKPTR 0x40
132 #define ATI_REG_MODEM_OUT_DMA1_DT_START 0x44
133 #define ATI_REG_MODEM_OUT_DMA1_DT_NEXT 0x48
134 #define ATI_REG_MODEM_OUT_DMA1_DT_CUR 0x4c
135 #define ATI_REG_MODEM_OUT_DMA2_DT_START 0x50
136 #define ATI_REG_MODEM_OUT_DMA2_DT_NEXT 0x54
137 #define ATI_REG_MODEM_OUT_DMA2_DT_CUR 0x58
138 #define ATI_REG_MODEM_OUT_DMA3_DT_START 0x5c
139 #define ATI_REG_MODEM_OUT_DMA3_DT_NEXT 0x60
140 #define ATI_REG_MODEM_OUT_DMA3_DT_CUR 0x64
141 #define ATI_REG_MODEM_OUT_DMA12_DT_SIZE 0x68
142 #define ATI_REG_MODEM_OUT_DMA3_DT_SIZE 0x6c
143 #define ATI_REG_MODEM_OUT_FIFO_USED 0x70
144 #define ATI_REG_MODEM_OUT_GPIO 0x74
145 #define ATI_REG_MODEM_OUT_GPIO_EN 1
146 #define ATI_REG_MODEM_OUT_GPIO_DATA_SHIFT 5
147 #define ATI_REG_MODEM_IN_GPIO 0x78
148
149 #define ATI_REG_MODEM_MIRROR 0x7c
150 #define ATI_REG_AUDIO_MIRROR 0x80
151
152 #define ATI_REG_MODEM_FIFO_FLUSH 0x88
153 #define ATI_REG_MODEM_FIFO_OUT1_FLUSH (1U<<0)
154 #define ATI_REG_MODEM_FIFO_OUT2_FLUSH (1U<<1)
155 #define ATI_REG_MODEM_FIFO_OUT3_FLUSH (1U<<2)
156 #define ATI_REG_MODEM_FIFO_IN_FLUSH (1U<<3)
157
158 /* LINKPTR */
159 #define ATI_REG_LINKPTR_EN (1U<<0)
160
161 #define ATI_MAX_DESCRIPTORS 256 /* max number of descriptor packets */
162
163
164 struct atiixp_modem;
165
166 /*
167 * DMA packate descriptor
168 */
169
170 struct atiixp_dma_desc {
171 __le32 addr; /* DMA buffer address */
172 u16 status; /* status bits */
173 u16 size; /* size of the packet in dwords */
174 __le32 next; /* address of the next packet descriptor */
175 };
176
177 /*
178 * stream enum
179 */
180 enum { ATI_DMA_PLAYBACK, ATI_DMA_CAPTURE, NUM_ATI_DMAS }; /* DMAs */
181 enum { ATI_PCM_OUT, ATI_PCM_IN, NUM_ATI_PCMS }; /* AC97 pcm slots */
182 enum { ATI_PCMDEV_ANALOG, NUM_ATI_PCMDEVS }; /* pcm devices */
183
184 #define NUM_ATI_CODECS 3
185
186
187 /*
188 * constants and callbacks for each DMA type
189 */
190 struct atiixp_dma_ops {
191 int type; /* ATI_DMA_XXX */
192 unsigned int llp_offset; /* LINKPTR offset */
193 unsigned int dt_cur; /* DT_CUR offset */
194 /* called from open callback */
195 void (*enable_dma)(struct atiixp_modem *chip, int on);
196 /* called from trigger (START/STOP) */
197 void (*enable_transfer)(struct atiixp_modem *chip, int on);
198 /* called from trigger (STOP only) */
199 void (*flush_dma)(struct atiixp_modem *chip);
200 };
201
202 /*
203 * DMA stream
204 */
205 struct atiixp_dma {
206 const struct atiixp_dma_ops *ops;
207 struct snd_dma_buffer desc_buf;
208 struct snd_pcm_substream *substream; /* assigned PCM substream */
209 unsigned int buf_addr, buf_bytes; /* DMA buffer address, bytes */
210 unsigned int period_bytes, periods;
211 int opened;
212 int running;
213 int pcm_open_flag;
214 int ac97_pcm_type; /* index # of ac97_pcm to access, -1 = not used */
215 };
216
217 /*
218 * ATI IXP chip
219 */
220 struct atiixp_modem {
221 struct snd_card *card;
222 struct pci_dev *pci;
223
224 struct resource *res; /* memory i/o */
225 unsigned long addr;
226 void __iomem *remap_addr;
227 int irq;
228
229 struct snd_ac97_bus *ac97_bus;
230 struct snd_ac97 *ac97[NUM_ATI_CODECS];
231
232 spinlock_t reg_lock;
233
234 struct atiixp_dma dmas[NUM_ATI_DMAS];
235 struct ac97_pcm *pcms[NUM_ATI_PCMS];
236 struct snd_pcm *pcmdevs[NUM_ATI_PCMDEVS];
237
238 int max_channels; /* max. channels for PCM out */
239
240 unsigned int codec_not_ready_bits; /* for codec detection */
241
242 int spdif_over_aclink; /* passed from the module option */
243 struct mutex open_mutex; /* playback open mutex */
244 };
245
246
247 /*
248 */
249 static const struct pci_device_id snd_atiixp_ids[] = {
250 { PCI_VDEVICE(ATI, 0x434d), 0 }, /* SB200 */
251 { PCI_VDEVICE(ATI, 0x4378), 0 }, /* SB400 */
252 { 0, }
253 };
254
255 MODULE_DEVICE_TABLE(pci, snd_atiixp_ids);
256
257
258 /*
259 * lowlevel functions
260 */
261
262 /*
263 * update the bits of the given register.
264 * return 1 if the bits changed.
265 */
266 static int snd_atiixp_update_bits(struct atiixp_modem *chip, unsigned int reg,
267 unsigned int mask, unsigned int value)
268 {
269 void __iomem *addr = chip->remap_addr + reg;
270 unsigned int data, old_data;
271 old_data = data = readl(addr);
272 data &= ~mask;
273 data |= value;
274 if (old_data == data)
275 return 0;
276 writel(data, addr);
277 return 1;
278 }
279
280 /*
281 * macros for easy use
282 */
283 #define atiixp_write(chip,reg,value) \
284 writel(value, chip->remap_addr + ATI_REG_##reg)
285 #define atiixp_read(chip,reg) \
286 readl(chip->remap_addr + ATI_REG_##reg)
287 #define atiixp_update(chip,reg,mask,val) \
288 snd_atiixp_update_bits(chip, ATI_REG_##reg, mask, val)
289
290 /*
291 * handling DMA packets
292 *
293 * we allocate a linear buffer for the DMA, and split it to each packet.
294 * in a future version, a scatter-gather buffer should be implemented.
295 */
296
297 #define ATI_DESC_LIST_SIZE \
298 PAGE_ALIGN(ATI_MAX_DESCRIPTORS * sizeof(struct atiixp_dma_desc))
299
300 /*
301 * build packets ring for the given buffer size.
302 *
303 * IXP handles the buffer descriptors, which are connected as a linked
304 * list. although we can change the list dynamically, in this version,
305 * a static RING of buffer descriptors is used.
306 *
307 * the ring is built in this function, and is set up to the hardware.
308 */
309 static int atiixp_build_dma_packets(struct atiixp_modem *chip,
310 struct atiixp_dma *dma,
311 struct snd_pcm_substream *substream,
312 unsigned int periods,
313 unsigned int period_bytes)
314 {
315 unsigned int i;
316 u32 addr, desc_addr;
317 unsigned long flags;
318
319 if (periods > ATI_MAX_DESCRIPTORS)
320 return -ENOMEM;
321
322 if (dma->desc_buf.area == NULL) {
323 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, &chip->pci->dev,
324 ATI_DESC_LIST_SIZE, &dma->desc_buf) < 0)
325 return -ENOMEM;
326 dma->period_bytes = dma->periods = 0; /* clear */
327 }
328
329 if (dma->periods == periods && dma->period_bytes == period_bytes)
330 return 0;
331
332 /* reset DMA before changing the descriptor table */
333 spin_lock_irqsave(&chip->reg_lock, flags);
334 writel(0, chip->remap_addr + dma->ops->llp_offset);
335 dma->ops->enable_dma(chip, 0);
336 dma->ops->enable_dma(chip, 1);
337 spin_unlock_irqrestore(&chip->reg_lock, flags);
338
339 /* fill the entries */
340 addr = (u32)substream->runtime->dma_addr;
341 desc_addr = (u32)dma->desc_buf.addr;
342 for (i = 0; i < periods; i++) {
343 struct atiixp_dma_desc *desc;
344 desc = &((struct atiixp_dma_desc *)dma->desc_buf.area)[i];
345 desc->addr = cpu_to_le32(addr);
346 desc->status = 0;
347 desc->size = period_bytes >> 2; /* in dwords */
348 desc_addr += sizeof(struct atiixp_dma_desc);
349 if (i == periods - 1)
350 desc->next = cpu_to_le32((u32)dma->desc_buf.addr);
351 else
352 desc->next = cpu_to_le32(desc_addr);
353 addr += period_bytes;
354 }
355
356 writel((u32)dma->desc_buf.addr | ATI_REG_LINKPTR_EN,
357 chip->remap_addr + dma->ops->llp_offset);
358
359 dma->period_bytes = period_bytes;
360 dma->periods = periods;
361
362 return 0;
363 }
364
365 /*
366 * remove the ring buffer and release it if assigned
367 */
368 static void atiixp_clear_dma_packets(struct atiixp_modem *chip,
369 struct atiixp_dma *dma,
370 struct snd_pcm_substream *substream)
371 {
372 if (dma->desc_buf.area) {
373 writel(0, chip->remap_addr + dma->ops->llp_offset);
374 snd_dma_free_pages(&dma->desc_buf);
375 dma->desc_buf.area = NULL;
376 }
377 }
378
379 /*
380 * AC97 interface
381 */
382 static int snd_atiixp_acquire_codec(struct atiixp_modem *chip)
383 {
384 int timeout = 1000;
385
386 while (atiixp_read(chip, PHYS_OUT_ADDR) & ATI_REG_PHYS_OUT_ADDR_EN) {
387 if (! timeout--) {
388 dev_warn(chip->card->dev, "codec acquire timeout\n");
389 return -EBUSY;
390 }
391 udelay(1);
392 }
393 return 0;
394 }
395
396 static unsigned short snd_atiixp_codec_read(struct atiixp_modem *chip,
397 unsigned short codec,
398 unsigned short reg)
399 {
400 unsigned int data;
401 int timeout;
402
403 if (snd_atiixp_acquire_codec(chip) < 0)
404 return 0xffff;
405 data = (reg << ATI_REG_PHYS_OUT_ADDR_SHIFT) |
406 ATI_REG_PHYS_OUT_ADDR_EN |
407 ATI_REG_PHYS_OUT_RW |
408 codec;
409 atiixp_write(chip, PHYS_OUT_ADDR, data);
410 if (snd_atiixp_acquire_codec(chip) < 0)
411 return 0xffff;
412 timeout = 1000;
413 do {
414 data = atiixp_read(chip, PHYS_IN_ADDR);
415 if (data & ATI_REG_PHYS_IN_READ_FLAG)
416 return data >> ATI_REG_PHYS_IN_DATA_SHIFT;
417 udelay(1);
418 } while (--timeout);
419 /* time out may happen during reset */
420 if (reg < 0x7c)
421 dev_warn(chip->card->dev, "codec read timeout (reg %x)\n", reg);
422 return 0xffff;
423 }
424
425
426 static void snd_atiixp_codec_write(struct atiixp_modem *chip,
427 unsigned short codec,
428 unsigned short reg, unsigned short val)
429 {
430 unsigned int data;
431
432 if (snd_atiixp_acquire_codec(chip) < 0)
433 return;
434 data = ((unsigned int)val << ATI_REG_PHYS_OUT_DATA_SHIFT) |
435 ((unsigned int)reg << ATI_REG_PHYS_OUT_ADDR_SHIFT) |
436 ATI_REG_PHYS_OUT_ADDR_EN | codec;
437 atiixp_write(chip, PHYS_OUT_ADDR, data);
438 }
439
440
441 static unsigned short snd_atiixp_ac97_read(struct snd_ac97 *ac97,
442 unsigned short reg)
443 {
444 struct atiixp_modem *chip = ac97->private_data;
445 return snd_atiixp_codec_read(chip, ac97->num, reg);
446
447 }
448
449 static void snd_atiixp_ac97_write(struct snd_ac97 *ac97, unsigned short reg,
450 unsigned short val)
451 {
452 struct atiixp_modem *chip = ac97->private_data;
453 if (reg == AC97_GPIO_STATUS) {
454 atiixp_write(chip, MODEM_OUT_GPIO,
455 (val << ATI_REG_MODEM_OUT_GPIO_DATA_SHIFT) | ATI_REG_MODEM_OUT_GPIO_EN);
456 return;
457 }
458 snd_atiixp_codec_write(chip, ac97->num, reg, val);
459 }
460
461 /*
462 * reset AC link
463 */
464 static int snd_atiixp_aclink_reset(struct atiixp_modem *chip)
465 {
466 int timeout;
467
468 /* reset powerdoewn */
469 if (atiixp_update(chip, CMD, ATI_REG_CMD_POWERDOWN, 0))
470 udelay(10);
471
472 /* perform a software reset */
473 atiixp_update(chip, CMD, ATI_REG_CMD_AC_SOFT_RESET, ATI_REG_CMD_AC_SOFT_RESET);
474 atiixp_read(chip, CMD);
475 udelay(10);
476 atiixp_update(chip, CMD, ATI_REG_CMD_AC_SOFT_RESET, 0);
477
478 timeout = 10;
479 while (! (atiixp_read(chip, CMD) & ATI_REG_CMD_ACLINK_ACTIVE)) {
480 /* do a hard reset */
481 atiixp_update(chip, CMD, ATI_REG_CMD_AC_SYNC|ATI_REG_CMD_AC_RESET,
482 ATI_REG_CMD_AC_SYNC);
483 atiixp_read(chip, CMD);
484 msleep(1);
485 atiixp_update(chip, CMD, ATI_REG_CMD_AC_RESET, ATI_REG_CMD_AC_RESET);
486 if (!--timeout) {
487 dev_err(chip->card->dev, "codec reset timeout\n");
488 break;
489 }
490 }
491
492 /* deassert RESET and assert SYNC to make sure */
493 atiixp_update(chip, CMD, ATI_REG_CMD_AC_SYNC|ATI_REG_CMD_AC_RESET,
494 ATI_REG_CMD_AC_SYNC|ATI_REG_CMD_AC_RESET);
495
496 return 0;
497 }
498
499 static int snd_atiixp_aclink_down(struct atiixp_modem *chip)
500 {
501 // if (atiixp_read(chip, MODEM_MIRROR) & 0x1) /* modem running, too? */
502 // return -EBUSY;
503 atiixp_update(chip, CMD,
504 ATI_REG_CMD_POWERDOWN | ATI_REG_CMD_AC_RESET,
505 ATI_REG_CMD_POWERDOWN);
506 return 0;
507 }
508
509 /*
510 * auto-detection of codecs
511 *
512 * the IXP chip can generate interrupts for the non-existing codecs.
513 * NEW_FRAME interrupt is used to make sure that the interrupt is generated
514 * even if all three codecs are connected.
515 */
516
517 #define ALL_CODEC_NOT_READY \
518 (ATI_REG_ISR_CODEC0_NOT_READY |\
519 ATI_REG_ISR_CODEC1_NOT_READY |\
520 ATI_REG_ISR_CODEC2_NOT_READY)
521 #define CODEC_CHECK_BITS (ALL_CODEC_NOT_READY|ATI_REG_ISR_NEW_FRAME)
522
523 static int snd_atiixp_codec_detect(struct atiixp_modem *chip)
524 {
525 int timeout;
526
527 chip->codec_not_ready_bits = 0;
528 atiixp_write(chip, IER, CODEC_CHECK_BITS);
529 /* wait for the interrupts */
530 timeout = 50;
531 while (timeout-- > 0) {
532 msleep(1);
533 if (chip->codec_not_ready_bits)
534 break;
535 }
536 atiixp_write(chip, IER, 0); /* disable irqs */
537
538 if ((chip->codec_not_ready_bits & ALL_CODEC_NOT_READY) == ALL_CODEC_NOT_READY) {
539 dev_err(chip->card->dev, "no codec detected!\n");
540 return -ENXIO;
541 }
542 return 0;
543 }
544
545
546 /*
547 * enable DMA and irqs
548 */
549 static int snd_atiixp_chip_start(struct atiixp_modem *chip)
550 {
551 unsigned int reg;
552
553 /* set up spdif, enable burst mode */
554 reg = atiixp_read(chip, CMD);
555 reg |= ATI_REG_CMD_BURST_EN;
556 if(!(reg & ATI_REG_CMD_MODEM_PRESENT))
557 reg |= ATI_REG_CMD_MODEM_PRESENT;
558 atiixp_write(chip, CMD, reg);
559
560 /* clear all interrupt source */
561 atiixp_write(chip, ISR, 0xffffffff);
562 /* enable irqs */
563 atiixp_write(chip, IER,
564 ATI_REG_IER_MODEM_STATUS_EN |
565 ATI_REG_IER_MODEM_IN_XRUN_EN |
566 ATI_REG_IER_MODEM_OUT1_XRUN_EN);
567 return 0;
568 }
569
570
571 /*
572 * disable DMA and IRQs
573 */
574 static int snd_atiixp_chip_stop(struct atiixp_modem *chip)
575 {
576 /* clear interrupt source */
577 atiixp_write(chip, ISR, atiixp_read(chip, ISR));
578 /* disable irqs */
579 atiixp_write(chip, IER, 0);
580 return 0;
581 }
582
583
584 /*
585 * PCM section
586 */
587
588 /*
589 * pointer callback simplly reads XXX_DMA_DT_CUR register as the current
590 * position. when SG-buffer is implemented, the offset must be calculated
591 * correctly...
592 */
593 static snd_pcm_uframes_t snd_atiixp_pcm_pointer(struct snd_pcm_substream *substream)
594 {
595 struct atiixp_modem *chip = snd_pcm_substream_chip(substream);
596 struct snd_pcm_runtime *runtime = substream->runtime;
597 struct atiixp_dma *dma = runtime->private_data;
598 unsigned int curptr;
599 int timeout = 1000;
600
601 while (timeout--) {
602 curptr = readl(chip->remap_addr + dma->ops->dt_cur);
603 if (curptr < dma->buf_addr)
604 continue;
605 curptr -= dma->buf_addr;
606 if (curptr >= dma->buf_bytes)
607 continue;
608 return bytes_to_frames(runtime, curptr);
609 }
610 dev_dbg(chip->card->dev, "invalid DMA pointer read 0x%x (buf=%x)\n",
611 readl(chip->remap_addr + dma->ops->dt_cur), dma->buf_addr);
612 return 0;
613 }
614
615 /*
616 * XRUN detected, and stop the PCM substream
617 */
618 static void snd_atiixp_xrun_dma(struct atiixp_modem *chip,
619 struct atiixp_dma *dma)
620 {
621 if (! dma->substream || ! dma->running)
622 return;
623 dev_dbg(chip->card->dev, "XRUN detected (DMA %d)\n", dma->ops->type);
624 snd_pcm_stop_xrun(dma->substream);
625 }
626
627 /*
628 * the period ack. update the substream.
629 */
630 static void snd_atiixp_update_dma(struct atiixp_modem *chip,
631 struct atiixp_dma *dma)
632 {
633 if (! dma->substream || ! dma->running)
634 return;
635 snd_pcm_period_elapsed(dma->substream);
636 }
637
638 /* set BUS_BUSY interrupt bit if any DMA is running */
639 /* call with spinlock held */
640 static void snd_atiixp_check_bus_busy(struct atiixp_modem *chip)
641 {
642 unsigned int bus_busy;
643 if (atiixp_read(chip, CMD) & (ATI_REG_CMD_MODEM_SEND1_EN |
644 ATI_REG_CMD_MODEM_RECEIVE_EN))
645 bus_busy = ATI_REG_IER_MODEM_SET_BUS_BUSY;
646 else
647 bus_busy = 0;
648 atiixp_update(chip, IER, ATI_REG_IER_MODEM_SET_BUS_BUSY, bus_busy);
649 }
650
651 /* common trigger callback
652 * calling the lowlevel callbacks in it
653 */
654 static int snd_atiixp_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
655 {
656 struct atiixp_modem *chip = snd_pcm_substream_chip(substream);
657 struct atiixp_dma *dma = substream->runtime->private_data;
658 int err = 0;
659
660 if (snd_BUG_ON(!dma->ops->enable_transfer ||
661 !dma->ops->flush_dma))
662 return -EINVAL;
663
664 spin_lock(&chip->reg_lock);
665 switch(cmd) {
666 case SNDRV_PCM_TRIGGER_START:
667 dma->ops->enable_transfer(chip, 1);
668 dma->running = 1;
669 break;
670 case SNDRV_PCM_TRIGGER_STOP:
671 dma->ops->enable_transfer(chip, 0);
672 dma->running = 0;
673 break;
674 default:
675 err = -EINVAL;
676 break;
677 }
678 if (! err) {
679 snd_atiixp_check_bus_busy(chip);
680 if (cmd == SNDRV_PCM_TRIGGER_STOP) {
681 dma->ops->flush_dma(chip);
682 snd_atiixp_check_bus_busy(chip);
683 }
684 }
685 spin_unlock(&chip->reg_lock);
686 return err;
687 }
688
689
690 /*
691 * lowlevel callbacks for each DMA type
692 *
693 * every callback is supposed to be called in chip->reg_lock spinlock
694 */
695
696 /* flush FIFO of analog OUT DMA */
697 static void atiixp_out_flush_dma(struct atiixp_modem *chip)
698 {
699 atiixp_write(chip, MODEM_FIFO_FLUSH, ATI_REG_MODEM_FIFO_OUT1_FLUSH);
700 }
701
702 /* enable/disable analog OUT DMA */
703 static void atiixp_out_enable_dma(struct atiixp_modem *chip, int on)
704 {
705 unsigned int data;
706 data = atiixp_read(chip, CMD);
707 if (on) {
708 if (data & ATI_REG_CMD_MODEM_OUT_DMA1_EN)
709 return;
710 atiixp_out_flush_dma(chip);
711 data |= ATI_REG_CMD_MODEM_OUT_DMA1_EN;
712 } else
713 data &= ~ATI_REG_CMD_MODEM_OUT_DMA1_EN;
714 atiixp_write(chip, CMD, data);
715 }
716
717 /* start/stop transfer over OUT DMA */
718 static void atiixp_out_enable_transfer(struct atiixp_modem *chip, int on)
719 {
720 atiixp_update(chip, CMD, ATI_REG_CMD_MODEM_SEND1_EN,
721 on ? ATI_REG_CMD_MODEM_SEND1_EN : 0);
722 }
723
724 /* enable/disable analog IN DMA */
725 static void atiixp_in_enable_dma(struct atiixp_modem *chip, int on)
726 {
727 atiixp_update(chip, CMD, ATI_REG_CMD_MODEM_IN_DMA_EN,
728 on ? ATI_REG_CMD_MODEM_IN_DMA_EN : 0);
729 }
730
731 /* start/stop analog IN DMA */
732 static void atiixp_in_enable_transfer(struct atiixp_modem *chip, int on)
733 {
734 if (on) {
735 unsigned int data = atiixp_read(chip, CMD);
736 if (! (data & ATI_REG_CMD_MODEM_RECEIVE_EN)) {
737 data |= ATI_REG_CMD_MODEM_RECEIVE_EN;
738 atiixp_write(chip, CMD, data);
739 }
740 } else
741 atiixp_update(chip, CMD, ATI_REG_CMD_MODEM_RECEIVE_EN, 0);
742 }
743
744 /* flush FIFO of analog IN DMA */
745 static void atiixp_in_flush_dma(struct atiixp_modem *chip)
746 {
747 atiixp_write(chip, MODEM_FIFO_FLUSH, ATI_REG_MODEM_FIFO_IN_FLUSH);
748 }
749
750 /* set up slots and formats for analog OUT */
751 static int snd_atiixp_playback_prepare(struct snd_pcm_substream *substream)
752 {
753 struct atiixp_modem *chip = snd_pcm_substream_chip(substream);
754 unsigned int data;
755
756 spin_lock_irq(&chip->reg_lock);
757 /* set output threshold */
758 data = atiixp_read(chip, MODEM_OUT_FIFO);
759 data &= ~ATI_REG_MODEM_OUT1_DMA_THRESHOLD_MASK;
760 data |= 0x04 << ATI_REG_MODEM_OUT1_DMA_THRESHOLD_SHIFT;
761 atiixp_write(chip, MODEM_OUT_FIFO, data);
762 spin_unlock_irq(&chip->reg_lock);
763 return 0;
764 }
765
766 /* set up slots and formats for analog IN */
767 static int snd_atiixp_capture_prepare(struct snd_pcm_substream *substream)
768 {
769 return 0;
770 }
771
772 /*
773 * hw_params - allocate the buffer and set up buffer descriptors
774 */
775 static int snd_atiixp_pcm_hw_params(struct snd_pcm_substream *substream,
776 struct snd_pcm_hw_params *hw_params)
777 {
778 struct atiixp_modem *chip = snd_pcm_substream_chip(substream);
779 struct atiixp_dma *dma = substream->runtime->private_data;
780 int err;
781 int i;
782
783 dma->buf_addr = substream->runtime->dma_addr;
784 dma->buf_bytes = params_buffer_bytes(hw_params);
785
786 err = atiixp_build_dma_packets(chip, dma, substream,
787 params_periods(hw_params),
788 params_period_bytes(hw_params));
789 if (err < 0)
790 return err;
791
792 /* set up modem rate */
793 for (i = 0; i < NUM_ATI_CODECS; i++) {
794 if (! chip->ac97[i])
795 continue;
796 snd_ac97_write(chip->ac97[i], AC97_LINE1_RATE, params_rate(hw_params));
797 snd_ac97_write(chip->ac97[i], AC97_LINE1_LEVEL, 0);
798 }
799
800 return err;
801 }
802
803 static int snd_atiixp_pcm_hw_free(struct snd_pcm_substream *substream)
804 {
805 struct atiixp_modem *chip = snd_pcm_substream_chip(substream);
806 struct atiixp_dma *dma = substream->runtime->private_data;
807
808 atiixp_clear_dma_packets(chip, dma, substream);
809 return 0;
810 }
811
812
813 /*
814 * pcm hardware definition, identical for all DMA types
815 */
816 static const struct snd_pcm_hardware snd_atiixp_pcm_hw =
817 {
818 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
819 SNDRV_PCM_INFO_BLOCK_TRANSFER |
820 SNDRV_PCM_INFO_MMAP_VALID),
821 .formats = SNDRV_PCM_FMTBIT_S16_LE,
822 .rates = (SNDRV_PCM_RATE_8000 |
823 SNDRV_PCM_RATE_16000 |
824 SNDRV_PCM_RATE_KNOT),
825 .rate_min = 8000,
826 .rate_max = 16000,
827 .channels_min = 2,
828 .channels_max = 2,
829 .buffer_bytes_max = 256 * 1024,
830 .period_bytes_min = 32,
831 .period_bytes_max = 128 * 1024,
832 .periods_min = 2,
833 .periods_max = ATI_MAX_DESCRIPTORS,
834 };
835
836 static int snd_atiixp_pcm_open(struct snd_pcm_substream *substream,
837 struct atiixp_dma *dma, int pcm_type)
838 {
839 struct atiixp_modem *chip = snd_pcm_substream_chip(substream);
840 struct snd_pcm_runtime *runtime = substream->runtime;
841 int err;
842 static const unsigned int rates[] = { 8000, 9600, 12000, 16000 };
843 static const struct snd_pcm_hw_constraint_list hw_constraints_rates = {
844 .count = ARRAY_SIZE(rates),
845 .list = rates,
846 .mask = 0,
847 };
848
849 if (snd_BUG_ON(!dma->ops || !dma->ops->enable_dma))
850 return -EINVAL;
851
852 if (dma->opened)
853 return -EBUSY;
854 dma->substream = substream;
855 runtime->hw = snd_atiixp_pcm_hw;
856 dma->ac97_pcm_type = pcm_type;
857 err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
858 &hw_constraints_rates);
859 if (err < 0)
860 return err;
861 err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
862 if (err < 0)
863 return err;
864 runtime->private_data = dma;
865
866 /* enable DMA bits */
867 spin_lock_irq(&chip->reg_lock);
868 dma->ops->enable_dma(chip, 1);
869 spin_unlock_irq(&chip->reg_lock);
870 dma->opened = 1;
871
872 return 0;
873 }
874
875 static int snd_atiixp_pcm_close(struct snd_pcm_substream *substream,
876 struct atiixp_dma *dma)
877 {
878 struct atiixp_modem *chip = snd_pcm_substream_chip(substream);
879 /* disable DMA bits */
880 if (snd_BUG_ON(!dma->ops || !dma->ops->enable_dma))
881 return -EINVAL;
882 spin_lock_irq(&chip->reg_lock);
883 dma->ops->enable_dma(chip, 0);
884 spin_unlock_irq(&chip->reg_lock);
885 dma->substream = NULL;
886 dma->opened = 0;
887 return 0;
888 }
889
890 /*
891 */
892 static int snd_atiixp_playback_open(struct snd_pcm_substream *substream)
893 {
894 struct atiixp_modem *chip = snd_pcm_substream_chip(substream);
895 int err;
896
897 mutex_lock(&chip->open_mutex);
898 err = snd_atiixp_pcm_open(substream, &chip->dmas[ATI_DMA_PLAYBACK], 0);
899 mutex_unlock(&chip->open_mutex);
900 if (err < 0)
901 return err;
902 return 0;
903 }
904
905 static int snd_atiixp_playback_close(struct snd_pcm_substream *substream)
906 {
907 struct atiixp_modem *chip = snd_pcm_substream_chip(substream);
908 int err;
909 mutex_lock(&chip->open_mutex);
910 err = snd_atiixp_pcm_close(substream, &chip->dmas[ATI_DMA_PLAYBACK]);
911 mutex_unlock(&chip->open_mutex);
912 return err;
913 }
914
915 static int snd_atiixp_capture_open(struct snd_pcm_substream *substream)
916 {
917 struct atiixp_modem *chip = snd_pcm_substream_chip(substream);
918 return snd_atiixp_pcm_open(substream, &chip->dmas[ATI_DMA_CAPTURE], 1);
919 }
920
921 static int snd_atiixp_capture_close(struct snd_pcm_substream *substream)
922 {
923 struct atiixp_modem *chip = snd_pcm_substream_chip(substream);
924 return snd_atiixp_pcm_close(substream, &chip->dmas[ATI_DMA_CAPTURE]);
925 }
926
927
928 /* AC97 playback */
929 static const struct snd_pcm_ops snd_atiixp_playback_ops = {
930 .open = snd_atiixp_playback_open,
931 .close = snd_atiixp_playback_close,
932 .hw_params = snd_atiixp_pcm_hw_params,
933 .hw_free = snd_atiixp_pcm_hw_free,
934 .prepare = snd_atiixp_playback_prepare,
935 .trigger = snd_atiixp_pcm_trigger,
936 .pointer = snd_atiixp_pcm_pointer,
937 };
938
939 /* AC97 capture */
940 static const struct snd_pcm_ops snd_atiixp_capture_ops = {
941 .open = snd_atiixp_capture_open,
942 .close = snd_atiixp_capture_close,
943 .hw_params = snd_atiixp_pcm_hw_params,
944 .hw_free = snd_atiixp_pcm_hw_free,
945 .prepare = snd_atiixp_capture_prepare,
946 .trigger = snd_atiixp_pcm_trigger,
947 .pointer = snd_atiixp_pcm_pointer,
948 };
949
950 static const struct atiixp_dma_ops snd_atiixp_playback_dma_ops = {
951 .type = ATI_DMA_PLAYBACK,
952 .llp_offset = ATI_REG_MODEM_OUT_DMA1_LINKPTR,
953 .dt_cur = ATI_REG_MODEM_OUT_DMA1_DT_CUR,
954 .enable_dma = atiixp_out_enable_dma,
955 .enable_transfer = atiixp_out_enable_transfer,
956 .flush_dma = atiixp_out_flush_dma,
957 };
958
959 static const struct atiixp_dma_ops snd_atiixp_capture_dma_ops = {
960 .type = ATI_DMA_CAPTURE,
961 .llp_offset = ATI_REG_MODEM_IN_DMA_LINKPTR,
962 .dt_cur = ATI_REG_MODEM_IN_DMA_DT_CUR,
963 .enable_dma = atiixp_in_enable_dma,
964 .enable_transfer = atiixp_in_enable_transfer,
965 .flush_dma = atiixp_in_flush_dma,
966 };
967
968 static int snd_atiixp_pcm_new(struct atiixp_modem *chip)
969 {
970 struct snd_pcm *pcm;
971 int err;
972
973 /* initialize constants */
974 chip->dmas[ATI_DMA_PLAYBACK].ops = &snd_atiixp_playback_dma_ops;
975 chip->dmas[ATI_DMA_CAPTURE].ops = &snd_atiixp_capture_dma_ops;
976
977 /* PCM #0: analog I/O */
978 err = snd_pcm_new(chip->card, "ATI IXP MC97", ATI_PCMDEV_ANALOG, 1, 1, &pcm);
979 if (err < 0)
980 return err;
981 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_atiixp_playback_ops);
982 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_atiixp_capture_ops);
983 pcm->dev_class = SNDRV_PCM_CLASS_MODEM;
984 pcm->private_data = chip;
985 strcpy(pcm->name, "ATI IXP MC97");
986 chip->pcmdevs[ATI_PCMDEV_ANALOG] = pcm;
987
988 snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV,
989 &chip->pci->dev, 64*1024, 128*1024);
990
991 return 0;
992 }
993
994
995
996 /*
997 * interrupt handler
998 */
999 static irqreturn_t snd_atiixp_interrupt(int irq, void *dev_id)
1000 {
1001 struct atiixp_modem *chip = dev_id;
1002 unsigned int status;
1003
1004 status = atiixp_read(chip, ISR);
1005
1006 if (! status)
1007 return IRQ_NONE;
1008
1009 /* process audio DMA */
1010 if (status & ATI_REG_ISR_MODEM_OUT1_XRUN)
1011 snd_atiixp_xrun_dma(chip, &chip->dmas[ATI_DMA_PLAYBACK]);
1012 else if (status & ATI_REG_ISR_MODEM_OUT1_STATUS)
1013 snd_atiixp_update_dma(chip, &chip->dmas[ATI_DMA_PLAYBACK]);
1014 if (status & ATI_REG_ISR_MODEM_IN_XRUN)
1015 snd_atiixp_xrun_dma(chip, &chip->dmas[ATI_DMA_CAPTURE]);
1016 else if (status & ATI_REG_ISR_MODEM_IN_STATUS)
1017 snd_atiixp_update_dma(chip, &chip->dmas[ATI_DMA_CAPTURE]);
1018
1019 /* for codec detection */
1020 if (status & CODEC_CHECK_BITS) {
1021 unsigned int detected;
1022 detected = status & CODEC_CHECK_BITS;
1023 spin_lock(&chip->reg_lock);
1024 chip->codec_not_ready_bits |= detected;
1025 atiixp_update(chip, IER, detected, 0); /* disable the detected irqs */
1026 spin_unlock(&chip->reg_lock);
1027 }
1028
1029 /* ack */
1030 atiixp_write(chip, ISR, status);
1031
1032 return IRQ_HANDLED;
1033 }
1034
1035
1036 /*
1037 * ac97 mixer section
1038 */
1039
1040 static int snd_atiixp_mixer_new(struct atiixp_modem *chip, int clock)
1041 {
1042 struct snd_ac97_bus *pbus;
1043 struct snd_ac97_template ac97;
1044 int i, err;
1045 int codec_count;
1046 static const struct snd_ac97_bus_ops ops = {
1047 .write = snd_atiixp_ac97_write,
1048 .read = snd_atiixp_ac97_read,
1049 };
1050 static const unsigned int codec_skip[NUM_ATI_CODECS] = {
1051 ATI_REG_ISR_CODEC0_NOT_READY,
1052 ATI_REG_ISR_CODEC1_NOT_READY,
1053 ATI_REG_ISR_CODEC2_NOT_READY,
1054 };
1055
1056 if (snd_atiixp_codec_detect(chip) < 0)
1057 return -ENXIO;
1058
1059 err = snd_ac97_bus(chip->card, 0, &ops, chip, &pbus);
1060 if (err < 0)
1061 return err;
1062 pbus->clock = clock;
1063 chip->ac97_bus = pbus;
1064
1065 codec_count = 0;
1066 for (i = 0; i < NUM_ATI_CODECS; i++) {
1067 if (chip->codec_not_ready_bits & codec_skip[i])
1068 continue;
1069 memset(&ac97, 0, sizeof(ac97));
1070 ac97.private_data = chip;
1071 ac97.pci = chip->pci;
1072 ac97.num = i;
1073 ac97.scaps = AC97_SCAP_SKIP_AUDIO | AC97_SCAP_POWER_SAVE;
1074 err = snd_ac97_mixer(pbus, &ac97, &chip->ac97[i]);
1075 if (err < 0) {
1076 chip->ac97[i] = NULL; /* to be sure */
1077 dev_dbg(chip->card->dev,
1078 "codec %d not available for modem\n", i);
1079 continue;
1080 }
1081 codec_count++;
1082 }
1083
1084 if (! codec_count) {
1085 dev_err(chip->card->dev, "no codec available\n");
1086 return -ENODEV;
1087 }
1088
1089 /* snd_ac97_tune_hardware(chip->ac97, ac97_quirks); */
1090
1091 return 0;
1092 }
1093
1094
1095 /*
1096 * power management
1097 */
1098 static int snd_atiixp_suspend(struct device *dev)
1099 {
1100 struct snd_card *card = dev_get_drvdata(dev);
1101 struct atiixp_modem *chip = card->private_data;
1102 int i;
1103
1104 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
1105 for (i = 0; i < NUM_ATI_CODECS; i++)
1106 snd_ac97_suspend(chip->ac97[i]);
1107 snd_atiixp_aclink_down(chip);
1108 snd_atiixp_chip_stop(chip);
1109 return 0;
1110 }
1111
1112 static int snd_atiixp_resume(struct device *dev)
1113 {
1114 struct snd_card *card = dev_get_drvdata(dev);
1115 struct atiixp_modem *chip = card->private_data;
1116 int i;
1117
1118 snd_atiixp_aclink_reset(chip);
1119 snd_atiixp_chip_start(chip);
1120
1121 for (i = 0; i < NUM_ATI_CODECS; i++)
1122 snd_ac97_resume(chip->ac97[i]);
1123
1124 snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1125 return 0;
1126 }
1127
1128 static DEFINE_SIMPLE_DEV_PM_OPS(snd_atiixp_pm, snd_atiixp_suspend, snd_atiixp_resume);
1129
1130 /*
1131 * proc interface for register dump
1132 */
1133
1134 static void snd_atiixp_proc_read(struct snd_info_entry *entry,
1135 struct snd_info_buffer *buffer)
1136 {
1137 struct atiixp_modem *chip = entry->private_data;
1138 int i;
1139
1140 for (i = 0; i < 256; i += 4)
1141 snd_iprintf(buffer, "%02x: %08x\n", i, readl(chip->remap_addr + i));
1142 }
1143
1144 static void snd_atiixp_proc_init(struct atiixp_modem *chip)
1145 {
1146 snd_card_ro_proc_new(chip->card, "atiixp-modem", chip,
1147 snd_atiixp_proc_read);
1148 }
1149
1150
1151 /*
1152 * destructor
1153 */
1154
1155 static void snd_atiixp_free(struct snd_card *card)
1156 {
1157 snd_atiixp_chip_stop(card->private_data);
1158 }
1159
1160 /*
1161 * constructor for chip instance
1162 */
1163 static int snd_atiixp_init(struct snd_card *card, struct pci_dev *pci)
1164 {
1165 struct atiixp_modem *chip = card->private_data;
1166 int err;
1167
1168 err = pcim_enable_device(pci);
1169 if (err < 0)
1170 return err;
1171
1172 spin_lock_init(&chip->reg_lock);
1173 mutex_init(&chip->open_mutex);
1174 chip->card = card;
1175 chip->pci = pci;
1176 chip->irq = -1;
1177 err = pcim_iomap_regions(pci, 1 << 0, "ATI IXP MC97");
1178 if (err < 0)
1179 return err;
1180 chip->addr = pci_resource_start(pci, 0);
1181 chip->remap_addr = pcim_iomap_table(pci)[0];
1182
1183 if (devm_request_irq(&pci->dev, pci->irq, snd_atiixp_interrupt,
1184 IRQF_SHARED, KBUILD_MODNAME, chip)) {
1185 dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
1186 return -EBUSY;
1187 }
1188 chip->irq = pci->irq;
1189 card->sync_irq = chip->irq;
1190 card->private_free = snd_atiixp_free;
1191 pci_set_master(pci);
1192
1193 return 0;
1194 }
1195
1196
1197 static int __snd_atiixp_probe(struct pci_dev *pci,
1198 const struct pci_device_id *pci_id)
1199 {
1200 struct snd_card *card;
1201 struct atiixp_modem *chip;
1202 int err;
1203
1204 err = snd_devm_card_new(&pci->dev, index, id, THIS_MODULE,
1205 sizeof(*chip), &card);
1206 if (err < 0)
1207 return err;
1208 chip = card->private_data;
1209
1210 strcpy(card->driver, "ATIIXP-MODEM");
1211 strcpy(card->shortname, "ATI IXP Modem");
1212 err = snd_atiixp_init(card, pci);
1213 if (err < 0)
1214 return err;
1215
1216 err = snd_atiixp_aclink_reset(chip);
1217 if (err < 0)
1218 return err;
1219
1220 err = snd_atiixp_mixer_new(chip, ac97_clock);
1221 if (err < 0)
1222 return err;
1223
1224 err = snd_atiixp_pcm_new(chip);
1225 if (err < 0)
1226 return err;
1227
1228 snd_atiixp_proc_init(chip);
1229
1230 snd_atiixp_chip_start(chip);
1231
1232 sprintf(card->longname, "%s rev %x at 0x%lx, irq %i",
1233 card->shortname, pci->revision, chip->addr, chip->irq);
1234
1235 err = snd_card_register(card);
1236 if (err < 0)
1237 return err;
1238
1239 pci_set_drvdata(pci, card);
1240 return 0;
1241 }
1242
1243 static int snd_atiixp_probe(struct pci_dev *pci,
1244 const struct pci_device_id *pci_id)
1245 {
1246 return snd_card_free_on_error(&pci->dev, __snd_atiixp_probe(pci, pci_id));
1247 }
1248
1249 static struct pci_driver atiixp_modem_driver = {
1250 .name = KBUILD_MODNAME,
1251 .id_table = snd_atiixp_ids,
1252 .probe = snd_atiixp_probe,
1253 .driver = {
1254 .pm = &snd_atiixp_pm,
1255 },
1256 };
1257
1258 module_pci_driver(atiixp_modem_driver);
1259
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