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[ALSA] sound/core/: possible cleanups
[linux-2.6-block.git] / sound / pci / atiixp.c
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1da177e4
LT		 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
37MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>");
38MODULE_DESCRIPTION("ATI IXP AC97 controller");
39MODULE_LICENSE("GPL");
40MODULE_SUPPORTED_DEVICE("{{ATI,IXP150/200/250/300/400}}");
41
42static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
43static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
44static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */
45static int ac97_clock[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 48000};
46static char *ac97_quirk[SNDRV_CARDS];
47static int spdif_aclink[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 1};
48
49module_param_array(index, int, NULL, 0444);
50MODULE_PARM_DESC(index, "Index value for ATI IXP controller.");
51module_param_array(id, charp, NULL, 0444);
52MODULE_PARM_DESC(id, "ID string for ATI IXP controller.");
53module_param_array(enable, bool, NULL, 0444);
54MODULE_PARM_DESC(enable, "Enable audio part of ATI IXP controller.");
55module_param_array(ac97_clock, int, NULL, 0444);
56MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz).");
57module_param_array(ac97_quirk, charp, NULL, 0444);
58MODULE_PARM_DESC(ac97_quirk, "AC'97 workaround for strange hardware.");
59module_param_array(spdif_aclink, bool, NULL, 0444);
60MODULE_PARM_DESC(spdif_aclink, "S/PDIF over AC-link.");
61
62
63/*
64 */
65
66#define ATI_REG_ISR 0x00 /* interrupt source */
67#define ATI_REG_ISR_IN_XRUN (1U<<0)
68#define ATI_REG_ISR_IN_STATUS (1U<<1)
69#define ATI_REG_ISR_OUT_XRUN (1U<<2)
70#define ATI_REG_ISR_OUT_STATUS (1U<<3)
71#define ATI_REG_ISR_SPDF_XRUN (1U<<4)
72#define ATI_REG_ISR_SPDF_STATUS (1U<<5)
73#define ATI_REG_ISR_PHYS_INTR (1U<<8)
74#define ATI_REG_ISR_PHYS_MISMATCH (1U<<9)
75#define ATI_REG_ISR_CODEC0_NOT_READY (1U<<10)
76#define ATI_REG_ISR_CODEC1_NOT_READY (1U<<11)
77#define ATI_REG_ISR_CODEC2_NOT_READY (1U<<12)
78#define ATI_REG_ISR_NEW_FRAME (1U<<13)
79
80#define ATI_REG_IER 0x04 /* interrupt enable */
81#define ATI_REG_IER_IN_XRUN_EN (1U<<0)
82#define ATI_REG_IER_IO_STATUS_EN (1U<<1)
83#define ATI_REG_IER_OUT_XRUN_EN (1U<<2)
84#define ATI_REG_IER_OUT_XRUN_COND (1U<<3)
85#define ATI_REG_IER_SPDF_XRUN_EN (1U<<4)
86#define ATI_REG_IER_SPDF_STATUS_EN (1U<<5)
87#define ATI_REG_IER_PHYS_INTR_EN (1U<<8)
88#define ATI_REG_IER_PHYS_MISMATCH_EN (1U<<9)
89#define ATI_REG_IER_CODEC0_INTR_EN (1U<<10)
90#define ATI_REG_IER_CODEC1_INTR_EN (1U<<11)
91#define ATI_REG_IER_CODEC2_INTR_EN (1U<<12)
92#define ATI_REG_IER_NEW_FRAME_EN (1U<<13) /* (RO */
93#define ATI_REG_IER_SET_BUS_BUSY (1U<<14) /* (WO) audio is running */
94
95#define ATI_REG_CMD 0x08 /* command */
96#define ATI_REG_CMD_POWERDOWN (1U<<0)
97#define ATI_REG_CMD_RECEIVE_EN (1U<<1)
98#define ATI_REG_CMD_SEND_EN (1U<<2)
99#define ATI_REG_CMD_STATUS_MEM (1U<<3)
100#define ATI_REG_CMD_SPDF_OUT_EN (1U<<4)
101#define ATI_REG_CMD_SPDF_STATUS_MEM (1U<<5)
102#define ATI_REG_CMD_SPDF_THRESHOLD (3U<<6)
103#define ATI_REG_CMD_SPDF_THRESHOLD_SHIFT 6
104#define ATI_REG_CMD_IN_DMA_EN (1U<<8)
105#define ATI_REG_CMD_OUT_DMA_EN (1U<<9)
106#define ATI_REG_CMD_SPDF_DMA_EN (1U<<10)
107#define ATI_REG_CMD_SPDF_OUT_STOPPED (1U<<11)
108#define ATI_REG_CMD_SPDF_CONFIG_MASK (7U<<12)
109#define ATI_REG_CMD_SPDF_CONFIG_34 (1U<<12)
110#define ATI_REG_CMD_SPDF_CONFIG_78 (2U<<12)
111#define ATI_REG_CMD_SPDF_CONFIG_69 (3U<<12)
112#define ATI_REG_CMD_SPDF_CONFIG_01 (4U<<12)
113#define ATI_REG_CMD_INTERLEAVE_SPDF (1U<<16)
114#define ATI_REG_CMD_AUDIO_PRESENT (1U<<20)
115#define ATI_REG_CMD_INTERLEAVE_IN (1U<<21)
116#define ATI_REG_CMD_INTERLEAVE_OUT (1U<<22)
117#define ATI_REG_CMD_LOOPBACK_EN (1U<<23)
118#define ATI_REG_CMD_PACKED_DIS (1U<<24)
119#define ATI_REG_CMD_BURST_EN (1U<<25)
120#define ATI_REG_CMD_PANIC_EN (1U<<26)
121#define ATI_REG_CMD_MODEM_PRESENT (1U<<27)
122#define ATI_REG_CMD_ACLINK_ACTIVE (1U<<28)
123#define ATI_REG_CMD_AC_SOFT_RESET (1U<<29)
124#define ATI_REG_CMD_AC_SYNC (1U<<30)
125#define ATI_REG_CMD_AC_RESET (1U<<31)
126
127#define ATI_REG_PHYS_OUT_ADDR 0x0c
128#define ATI_REG_PHYS_OUT_CODEC_MASK (3U<<0)
129#define ATI_REG_PHYS_OUT_RW (1U<<2)
130#define ATI_REG_PHYS_OUT_ADDR_EN (1U<<8)
131#define ATI_REG_PHYS_OUT_ADDR_SHIFT 9
132#define ATI_REG_PHYS_OUT_DATA_SHIFT 16
133
134#define ATI_REG_PHYS_IN_ADDR 0x10
135#define ATI_REG_PHYS_IN_READ_FLAG (1U<<8)
136#define ATI_REG_PHYS_IN_ADDR_SHIFT 9
137#define ATI_REG_PHYS_IN_DATA_SHIFT 16
138
139#define ATI_REG_SLOTREQ 0x14
140
141#define ATI_REG_COUNTER 0x18
142#define ATI_REG_COUNTER_SLOT (3U<<0) /* slot # */
143#define ATI_REG_COUNTER_BITCLOCK (31U<<8)
144
145#define ATI_REG_IN_FIFO_THRESHOLD 0x1c
146
147#define ATI_REG_IN_DMA_LINKPTR 0x20
148#define ATI_REG_IN_DMA_DT_START 0x24 /* RO */
149#define ATI_REG_IN_DMA_DT_NEXT 0x28 /* RO */
150#define ATI_REG_IN_DMA_DT_CUR 0x2c /* RO */
151#define ATI_REG_IN_DMA_DT_SIZE 0x30
152
153#define ATI_REG_OUT_DMA_SLOT 0x34
154#define ATI_REG_OUT_DMA_SLOT_BIT(x) (1U << ((x) - 3))
155#define ATI_REG_OUT_DMA_SLOT_MASK 0x1ff
156#define ATI_REG_OUT_DMA_THRESHOLD_MASK 0xf800
157#define ATI_REG_OUT_DMA_THRESHOLD_SHIFT 11
158
159#define ATI_REG_OUT_DMA_LINKPTR 0x38
160#define ATI_REG_OUT_DMA_DT_START 0x3c /* RO */
161#define ATI_REG_OUT_DMA_DT_NEXT 0x40 /* RO */
162#define ATI_REG_OUT_DMA_DT_CUR 0x44 /* RO */
163#define ATI_REG_OUT_DMA_DT_SIZE 0x48
164
165#define ATI_REG_SPDF_CMD 0x4c
166#define ATI_REG_SPDF_CMD_LFSR (1U<<4)
167#define ATI_REG_SPDF_CMD_SINGLE_CH (1U<<5)
168#define ATI_REG_SPDF_CMD_LFSR_ACC (0xff<<8) /* RO */
169
170#define ATI_REG_SPDF_DMA_LINKPTR 0x50
171#define ATI_REG_SPDF_DMA_DT_START 0x54 /* RO */
172#define ATI_REG_SPDF_DMA_DT_NEXT 0x58 /* RO */
173#define ATI_REG_SPDF_DMA_DT_CUR 0x5c /* RO */
174#define ATI_REG_SPDF_DMA_DT_SIZE 0x60
175
176#define ATI_REG_MODEM_MIRROR 0x7c
177#define ATI_REG_AUDIO_MIRROR 0x80
178
179#define ATI_REG_6CH_REORDER 0x84 /* reorder slots for 6ch */
180#define ATI_REG_6CH_REORDER_EN (1U<<0) /* 3,4,7,8,6,9 -> 3,4,6,9,7,8 */
181
182#define ATI_REG_FIFO_FLUSH 0x88
183#define ATI_REG_FIFO_OUT_FLUSH (1U<<0)
184#define ATI_REG_FIFO_IN_FLUSH (1U<<1)
185
186/* LINKPTR */
187#define ATI_REG_LINKPTR_EN (1U<<0)
188
189/* [INT|OUT|SPDIF]_DMA_DT_SIZE */
190#define ATI_REG_DMA_DT_SIZE (0xffffU<<0)
191#define ATI_REG_DMA_FIFO_USED (0x1fU<<16)
192#define ATI_REG_DMA_FIFO_FREE (0x1fU<<21)
193#define ATI_REG_DMA_STATE (7U<<26)
194
195
196#define ATI_MAX_DESCRIPTORS 256 /* max number of descriptor packets */
197
198
199/*
200 */
201
202typedef struct snd_atiixp atiixp_t;
203typedef struct snd_atiixp_dma atiixp_dma_t;
204typedef struct snd_atiixp_dma_ops atiixp_dma_ops_t;
205
206
207/*
208 * DMA packate descriptor
209 */
210
211typedef struct atiixp_dma_desc {
212 u32 addr; /* DMA buffer address */
213 u16 status; /* status bits */
214 u16 size; /* size of the packet in dwords */
215 u32 next; /* address of the next packet descriptor */
216} atiixp_dma_desc_t;
217
218/*
219 * stream enum
220 */
221enum { ATI_DMA_PLAYBACK, ATI_DMA_CAPTURE, ATI_DMA_SPDIF, NUM_ATI_DMAS }; /* DMAs */
222enum { ATI_PCM_OUT, ATI_PCM_IN, ATI_PCM_SPDIF, NUM_ATI_PCMS }; /* AC97 pcm slots */
223enum { ATI_PCMDEV_ANALOG, ATI_PCMDEV_DIGITAL, NUM_ATI_PCMDEVS }; /* pcm devices */
224
225#define NUM_ATI_CODECS 3
226
227
228/*
229 * constants and callbacks for each DMA type
230 */
231struct snd_atiixp_dma_ops {
232 int type; /* ATI_DMA_XXX */
233 unsigned int llp_offset; /* LINKPTR offset */
234 unsigned int dt_cur; /* DT_CUR offset */
235 void (*enable_dma)(atiixp_t *chip, int on); /* called from open callback */
236 void (*enable_transfer)(atiixp_t *chip, int on); /* called from trigger (START/STOP) */
237 void (*flush_dma)(atiixp_t *chip); /* called from trigger (STOP only) */
238};
239
240/*
241 * DMA stream
242 */
243struct snd_atiixp_dma {
244 const atiixp_dma_ops_t *ops;
245 struct snd_dma_buffer desc_buf;
246 snd_pcm_substream_t *substream; /* assigned PCM substream */
247 unsigned int buf_addr, buf_bytes; /* DMA buffer address, bytes */
248 unsigned int period_bytes, periods;
249 int opened;
250 int running;
251 int pcm_open_flag;
252 int ac97_pcm_type; /* index # of ac97_pcm to access, -1 = not used */
253 unsigned int saved_curptr;
254};
255
256/*
257 * ATI IXP chip
258 */
259struct snd_atiixp {
260 snd_card_t *card;
261 struct pci_dev *pci;
262
263 unsigned long addr;
264 void __iomem *remap_addr;
265 int irq;
266
267 ac97_bus_t *ac97_bus;
268 ac97_t *ac97[NUM_ATI_CODECS];
269
270 spinlock_t reg_lock;
271
272 atiixp_dma_t dmas[NUM_ATI_DMAS];
273 struct ac97_pcm *pcms[NUM_ATI_PCMS];
274 snd_pcm_t *pcmdevs[NUM_ATI_PCMDEVS];
275
276 int max_channels; /* max. channels for PCM out */
277
278 unsigned int codec_not_ready_bits; /* for codec detection */
279
280 int spdif_over_aclink; /* passed from the module option */
281 struct semaphore open_mutex; /* playback open mutex */
282};
283
284
285/*
286 */
287static struct pci_device_id snd_atiixp_ids[] = {
288 { 0x1002, 0x4341, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, /* SB200 */
289 { 0x1002, 0x4361, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, /* SB300 */
290 { 0x1002, 0x4370, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, /* SB400 */
291 { 0, }
292};
293
294MODULE_DEVICE_TABLE(pci, snd_atiixp_ids);
295
296
297/*
298 * lowlevel functions
299 */
300
301/*
302 * update the bits of the given register.
303 * return 1 if the bits changed.
304 */
305static int snd_atiixp_update_bits(atiixp_t *chip, unsigned int reg,
306 unsigned int mask, unsigned int value)
307{
308 void __iomem *addr = chip->remap_addr + reg;
309 unsigned int data, old_data;
310 old_data = data = readl(addr);
311 data &= ~mask;
312 data |= value;
313 if (old_data == data)
314 return 0;
315 writel(data, addr);
316 return 1;
317}
318
319/*
320 * macros for easy use
321 */
322#define atiixp_write(chip,reg,value) \
323 writel(value, chip->remap_addr + ATI_REG_##reg)
324#define atiixp_read(chip,reg) \
325 readl(chip->remap_addr + ATI_REG_##reg)
326#define atiixp_update(chip,reg,mask,val) \
327 snd_atiixp_update_bits(chip, ATI_REG_##reg, mask, val)
328
329/* delay for one tick */
330#define do_delay() do { \
331 set_current_state(TASK_UNINTERRUPTIBLE); \
332 schedule_timeout(1); \
333} while (0)
334
335
336/*
337 * handling DMA packets
338 *
339 * we allocate a linear buffer for the DMA, and split it to each packet.
340 * in a future version, a scatter-gather buffer should be implemented.
341 */
342
343#define ATI_DESC_LIST_SIZE \
344 PAGE_ALIGN(ATI_MAX_DESCRIPTORS * sizeof(atiixp_dma_desc_t))
345
346/*
347 * build packets ring for the given buffer size.
348 *
349 * IXP handles the buffer descriptors, which are connected as a linked
350 * list. although we can change the list dynamically, in this version,
351 * a static RING of buffer descriptors is used.
352 *
353 * the ring is built in this function, and is set up to the hardware.
354 */
355static int atiixp_build_dma_packets(atiixp_t *chip, atiixp_dma_t *dma,
356 snd_pcm_substream_t *substream,
357 unsigned int periods,
358 unsigned int period_bytes)
359{
360 unsigned int i;
361 u32 addr, desc_addr;
362 unsigned long flags;
363
364 if (periods > ATI_MAX_DESCRIPTORS)
365 return -ENOMEM;
366
367 if (dma->desc_buf.area == NULL) {
368 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
369 ATI_DESC_LIST_SIZE, &dma->desc_buf) < 0)
370 return -ENOMEM;
371 dma->period_bytes = dma->periods = 0; /* clear */
372 }
373
374 if (dma->periods == periods && dma->period_bytes == period_bytes)
375 return 0;
376
377 /* reset DMA before changing the descriptor table */
378 spin_lock_irqsave(&chip->reg_lock, flags);
379 writel(0, chip->remap_addr + dma->ops->llp_offset);
380 dma->ops->enable_dma(chip, 0);
381 dma->ops->enable_dma(chip, 1);
382 spin_unlock_irqrestore(&chip->reg_lock, flags);
383
384 /* fill the entries */
385 addr = (u32)substream->runtime->dma_addr;
386 desc_addr = (u32)dma->desc_buf.addr;
387 for (i = 0; i < periods; i++) {
388 atiixp_dma_desc_t *desc = &((atiixp_dma_desc_t *)dma->desc_buf.area)[i];
389 desc->addr = cpu_to_le32(addr);
390 desc->status = 0;
391 desc->size = period_bytes >> 2; /* in dwords */
392 desc_addr += sizeof(atiixp_dma_desc_t);
393 if (i == periods - 1)
394 desc->next = cpu_to_le32((u32)dma->desc_buf.addr);
395 else
396 desc->next = cpu_to_le32(desc_addr);
397 addr += period_bytes;
398 }
399
400 writel((u32)dma->desc_buf.addr | ATI_REG_LINKPTR_EN,
401 chip->remap_addr + dma->ops->llp_offset);
402
403 dma->period_bytes = period_bytes;
404 dma->periods = periods;
405
406 return 0;
407}
408
409/*
410 * remove the ring buffer and release it if assigned
411 */
412static void atiixp_clear_dma_packets(atiixp_t *chip, atiixp_dma_t *dma, snd_pcm_substream_t *substream)
413{
414 if (dma->desc_buf.area) {
415 writel(0, chip->remap_addr + dma->ops->llp_offset);
416 snd_dma_free_pages(&dma->desc_buf);
417 dma->desc_buf.area = NULL;
418 }
419}
420
421/*
422 * AC97 interface
423 */
424static int snd_atiixp_acquire_codec(atiixp_t *chip)
425{
426 int timeout = 1000;
427
428 while (atiixp_read(chip, PHYS_OUT_ADDR) & ATI_REG_PHYS_OUT_ADDR_EN) {
429 if (! timeout--) {
430 snd_printk(KERN_WARNING "atiixp: codec acquire timeout\n");
431 return -EBUSY;
432 }
433 udelay(1);
434 }
435 return 0;
436}
437
438static unsigned short snd_atiixp_codec_read(atiixp_t *chip, unsigned short codec, unsigned short reg)
439{
440 unsigned int data;
441 int timeout;
442
443 if (snd_atiixp_acquire_codec(chip) < 0)
444 return 0xffff;
445 data = (reg << ATI_REG_PHYS_OUT_ADDR_SHIFT) |
446 ATI_REG_PHYS_OUT_ADDR_EN |
447 ATI_REG_PHYS_OUT_RW |
448 codec;
449 atiixp_write(chip, PHYS_OUT_ADDR, data);
450 if (snd_atiixp_acquire_codec(chip) < 0)
451 return 0xffff;
452 timeout = 1000;
453 do {
454 data = atiixp_read(chip, PHYS_IN_ADDR);
455 if (data & ATI_REG_PHYS_IN_READ_FLAG)
456 return data >> ATI_REG_PHYS_IN_DATA_SHIFT;
457 udelay(1);
458 } while (--timeout);
459 /* time out may happen during reset */
460 if (reg < 0x7c)
461 snd_printk(KERN_WARNING "atiixp: codec read timeout (reg %x)\n", reg);
462 return 0xffff;
463}
464
465
466static void snd_atiixp_codec_write(atiixp_t *chip, unsigned short codec, unsigned short reg, unsigned short val)
467{
468 unsigned int data;
469
470 if (snd_atiixp_acquire_codec(chip) < 0)
471 return;
472 data = ((unsigned int)val << ATI_REG_PHYS_OUT_DATA_SHIFT) |
473 ((unsigned int)reg << ATI_REG_PHYS_OUT_ADDR_SHIFT) |
474 ATI_REG_PHYS_OUT_ADDR_EN | codec;
475 atiixp_write(chip, PHYS_OUT_ADDR, data);
476}
477
478
479static unsigned short snd_atiixp_ac97_read(ac97_t *ac97, unsigned short reg)
480{
481 atiixp_t *chip = ac97->private_data;
482 return snd_atiixp_codec_read(chip, ac97->num, reg);
483
484}
485
486static void snd_atiixp_ac97_write(ac97_t *ac97, unsigned short reg, unsigned short val)
487{
488 atiixp_t *chip = ac97->private_data;
489 snd_atiixp_codec_write(chip, ac97->num, reg, val);
490}
491
492/*
493 * reset AC link
494 */
495static int snd_atiixp_aclink_reset(atiixp_t *chip)
496{
497 int timeout;
498
499 /* reset powerdoewn */
500 if (atiixp_update(chip, CMD, ATI_REG_CMD_POWERDOWN, 0))
501 udelay(10);
502
503 /* perform a software reset */
504 atiixp_update(chip, CMD, ATI_REG_CMD_AC_SOFT_RESET, ATI_REG_CMD_AC_SOFT_RESET);
505 atiixp_read(chip, CMD);
506 udelay(10);
507 atiixp_update(chip, CMD, ATI_REG_CMD_AC_SOFT_RESET, 0);
508
509 timeout = 10;
510 while (! (atiixp_read(chip, CMD) & ATI_REG_CMD_ACLINK_ACTIVE)) {
511 /* do a hard reset */
512 atiixp_update(chip, CMD, ATI_REG_CMD_AC_SYNC|ATI_REG_CMD_AC_RESET,
513 ATI_REG_CMD_AC_SYNC);
514 atiixp_read(chip, CMD);
515 do_delay();
516 atiixp_update(chip, CMD, ATI_REG_CMD_AC_RESET, ATI_REG_CMD_AC_RESET);
517 if (--timeout) {
518 snd_printk(KERN_ERR "atiixp: codec reset timeout\n");
519 break;
520 }
521 }
522
523 /* deassert RESET and assert SYNC to make sure */
524 atiixp_update(chip, CMD, ATI_REG_CMD_AC_SYNC|ATI_REG_CMD_AC_RESET,
525 ATI_REG_CMD_AC_SYNC|ATI_REG_CMD_AC_RESET);
526
527 return 0;
528}
529
530#ifdef CONFIG_PM
531static int snd_atiixp_aclink_down(atiixp_t *chip)
532{
533 // if (atiixp_read(chip, MODEM_MIRROR) & 0x1) /* modem running, too? */
534 // return -EBUSY;
535 atiixp_update(chip, CMD,
536 ATI_REG_CMD_POWERDOWN | ATI_REG_CMD_AC_RESET,
537 ATI_REG_CMD_POWERDOWN);
538 return 0;
539}
540#endif
541
542/*
543 * auto-detection of codecs
544 *
545 * the IXP chip can generate interrupts for the non-existing codecs.
546 * NEW_FRAME interrupt is used to make sure that the interrupt is generated
547 * even if all three codecs are connected.
548 */
549
550#define ALL_CODEC_NOT_READY \
551 (ATI_REG_ISR_CODEC0_NOT_READY |\
552 ATI_REG_ISR_CODEC1_NOT_READY |\
553 ATI_REG_ISR_CODEC2_NOT_READY)
554#define CODEC_CHECK_BITS (ALL_CODEC_NOT_READY|ATI_REG_ISR_NEW_FRAME)
555
556static int snd_atiixp_codec_detect(atiixp_t *chip)
557{
558 int timeout;
559
560 chip->codec_not_ready_bits = 0;
561 atiixp_write(chip, IER, CODEC_CHECK_BITS);
562 /* wait for the interrupts */
563 timeout = HZ / 10;
564 while (timeout-- > 0) {
565 do_delay();
566 if (chip->codec_not_ready_bits)
567 break;
568 }
569 atiixp_write(chip, IER, 0); /* disable irqs */
570
571 if ((chip->codec_not_ready_bits & ALL_CODEC_NOT_READY) == ALL_CODEC_NOT_READY) {
572 snd_printk(KERN_ERR "atiixp: no codec detected!\n");
573 return -ENXIO;
574 }
575 return 0;
576}
577
578
579/*
580 * enable DMA and irqs
581 */
582static int snd_atiixp_chip_start(atiixp_t *chip)
583{
584 unsigned int reg;
585
586 /* set up spdif, enable burst mode */
587 reg = atiixp_read(chip, CMD);
588 reg |= 0x02 << ATI_REG_CMD_SPDF_THRESHOLD_SHIFT;
589 reg |= ATI_REG_CMD_BURST_EN;
590 atiixp_write(chip, CMD, reg);
591
592 reg = atiixp_read(chip, SPDF_CMD);
593 reg &= ~(ATI_REG_SPDF_CMD_LFSR|ATI_REG_SPDF_CMD_SINGLE_CH);
594 atiixp_write(chip, SPDF_CMD, reg);
595
596 /* clear all interrupt source */
597 atiixp_write(chip, ISR, 0xffffffff);
598 /* enable irqs */
599 atiixp_write(chip, IER,
600 ATI_REG_IER_IO_STATUS_EN |
601 ATI_REG_IER_IN_XRUN_EN |
602 ATI_REG_IER_OUT_XRUN_EN |
603 ATI_REG_IER_SPDF_XRUN_EN |
604 ATI_REG_IER_SPDF_STATUS_EN);
605 return 0;
606}
607
608
609/*
610 * disable DMA and IRQs
611 */
612static int snd_atiixp_chip_stop(atiixp_t *chip)
613{
614 /* clear interrupt source */
615 atiixp_write(chip, ISR, atiixp_read(chip, ISR));
616 /* disable irqs */
617 atiixp_write(chip, IER, 0);
618 return 0;
619}
620
621
622/*
623 * PCM section
624 */
625
626/*
627 * pointer callback simplly reads XXX_DMA_DT_CUR register as the current
628 * position. when SG-buffer is implemented, the offset must be calculated
629 * correctly...
630 */
631static snd_pcm_uframes_t snd_atiixp_pcm_pointer(snd_pcm_substream_t *substream)
632{
633 atiixp_t *chip = snd_pcm_substream_chip(substream);
634 snd_pcm_runtime_t *runtime = substream->runtime;
635 atiixp_dma_t *dma = (atiixp_dma_t *)runtime->private_data;
636 unsigned int curptr;
637 int timeout = 1000;
638
639 while (timeout--) {
640 curptr = readl(chip->remap_addr + dma->ops->dt_cur);
641 if (curptr < dma->buf_addr)
642 continue;
643 curptr -= dma->buf_addr;
644 if (curptr >= dma->buf_bytes)
645 continue;
646 return bytes_to_frames(runtime, curptr);
647 }
648 snd_printd("atiixp: invalid DMA pointer read 0x%x (buf=%x)\n",
649 readl(chip->remap_addr + dma->ops->dt_cur), dma->buf_addr);
650 return 0;
651}
652
653/*
654 * XRUN detected, and stop the PCM substream
655 */
656static void snd_atiixp_xrun_dma(atiixp_t *chip, atiixp_dma_t *dma)
657{
658 if (! dma->substream || ! dma->running)
659 return;
660 snd_printdd("atiixp: XRUN detected (DMA %d)\n", dma->ops->type);
661 snd_pcm_stop(dma->substream, SNDRV_PCM_STATE_XRUN);
662}
663
664/*
665 * the period ack. update the substream.
666 */
667static void snd_atiixp_update_dma(atiixp_t *chip, atiixp_dma_t *dma)
668{
669 if (! dma->substream || ! dma->running)
670 return;
671 snd_pcm_period_elapsed(dma->substream);
672}
673
674/* set BUS_BUSY interrupt bit if any DMA is running */
675/* call with spinlock held */
676static void snd_atiixp_check_bus_busy(atiixp_t *chip)
677{
678 unsigned int bus_busy;
679 if (atiixp_read(chip, CMD) & (ATI_REG_CMD_SEND_EN |
680 ATI_REG_CMD_RECEIVE_EN |
681 ATI_REG_CMD_SPDF_OUT_EN))
682 bus_busy = ATI_REG_IER_SET_BUS_BUSY;
683 else
684 bus_busy = 0;
685 atiixp_update(chip, IER, ATI_REG_IER_SET_BUS_BUSY, bus_busy);
686}
687
688/* common trigger callback
689 * calling the lowlevel callbacks in it
690 */
691static int snd_atiixp_pcm_trigger(snd_pcm_substream_t *substream, int cmd)
692{
693 atiixp_t *chip = snd_pcm_substream_chip(substream);
694 atiixp_dma_t *dma = (atiixp_dma_t *)substream->runtime->private_data;
695 int err = 0;
696
697 snd_assert(dma->ops->enable_transfer && dma->ops->flush_dma, return -EINVAL);
698
699 spin_lock(&chip->reg_lock);
700 switch (cmd) {
701 case SNDRV_PCM_TRIGGER_START:
702 dma->ops->enable_transfer(chip, 1);
703 dma->running = 1;
704 break;
705 case SNDRV_PCM_TRIGGER_STOP:
706 dma->ops->enable_transfer(chip, 0);
707 dma->running = 0;
708 break;
709 default:
710 err = -EINVAL;
711 break;
712 }
713 if (! err) {
714 snd_atiixp_check_bus_busy(chip);
715 if (cmd == SNDRV_PCM_TRIGGER_STOP) {
716 dma->ops->flush_dma(chip);
717 snd_atiixp_check_bus_busy(chip);
718 }
719 }
720 spin_unlock(&chip->reg_lock);
721 return err;
722}
723
724
725/*
726 * lowlevel callbacks for each DMA type
727 *
728 * every callback is supposed to be called in chip->reg_lock spinlock
729 */
730
731/* flush FIFO of analog OUT DMA */
732static void atiixp_out_flush_dma(atiixp_t *chip)
733{
734 atiixp_write(chip, FIFO_FLUSH, ATI_REG_FIFO_OUT_FLUSH);
735}
736
737/* enable/disable analog OUT DMA */
738static void atiixp_out_enable_dma(atiixp_t *chip, int on)
739{
740 unsigned int data;
741 data = atiixp_read(chip, CMD);
742 if (on) {
743 if (data & ATI_REG_CMD_OUT_DMA_EN)
744 return;
745 atiixp_out_flush_dma(chip);
746 data |= ATI_REG_CMD_OUT_DMA_EN;
747 } else
748 data &= ~ATI_REG_CMD_OUT_DMA_EN;
749 atiixp_write(chip, CMD, data);
750}
751
752/* start/stop transfer over OUT DMA */
753static void atiixp_out_enable_transfer(atiixp_t *chip, int on)
754{
755 atiixp_update(chip, CMD, ATI_REG_CMD_SEND_EN,
756 on ? ATI_REG_CMD_SEND_EN : 0);
757}
758
759/* enable/disable analog IN DMA */
760static void atiixp_in_enable_dma(atiixp_t *chip, int on)
761{
762 atiixp_update(chip, CMD, ATI_REG_CMD_IN_DMA_EN,
763 on ? ATI_REG_CMD_IN_DMA_EN : 0);
764}
765
766/* start/stop analog IN DMA */
767static void atiixp_in_enable_transfer(atiixp_t *chip, int on)
768{
769 if (on) {
770 unsigned int data = atiixp_read(chip, CMD);
771 if (! (data & ATI_REG_CMD_RECEIVE_EN)) {
772 data |= ATI_REG_CMD_RECEIVE_EN;
773#if 0 /* FIXME: this causes the endless loop */
774 /* wait until slot 3/4 are finished */
775 while ((atiixp_read(chip, COUNTER) &
776 ATI_REG_COUNTER_SLOT) != 5)
777 ;
778#endif
779 atiixp_write(chip, CMD, data);
780 }
781 } else
782 atiixp_update(chip, CMD, ATI_REG_CMD_RECEIVE_EN, 0);
783}
784
785/* flush FIFO of analog IN DMA */
786static void atiixp_in_flush_dma(atiixp_t *chip)
787{
788 atiixp_write(chip, FIFO_FLUSH, ATI_REG_FIFO_IN_FLUSH);
789}
790
791/* enable/disable SPDIF OUT DMA */
792static void atiixp_spdif_enable_dma(atiixp_t *chip, int on)
793{
794 atiixp_update(chip, CMD, ATI_REG_CMD_SPDF_DMA_EN,
795 on ? ATI_REG_CMD_SPDF_DMA_EN : 0);
796}
797
798/* start/stop SPDIF OUT DMA */
799static void atiixp_spdif_enable_transfer(atiixp_t *chip, int on)
800{
801 unsigned int data;
802 data = atiixp_read(chip, CMD);
803 if (on)
804 data |= ATI_REG_CMD_SPDF_OUT_EN;
805 else
806 data &= ~ATI_REG_CMD_SPDF_OUT_EN;
807 atiixp_write(chip, CMD, data);
808}
809
810/* flush FIFO of SPDIF OUT DMA */
811static void atiixp_spdif_flush_dma(atiixp_t *chip)
812{
813 int timeout;
814
815 /* DMA off, transfer on */
816 atiixp_spdif_enable_dma(chip, 0);
817 atiixp_spdif_enable_transfer(chip, 1);
818
819 timeout = 100;
820 do {
821 if (! (atiixp_read(chip, SPDF_DMA_DT_SIZE) & ATI_REG_DMA_FIFO_USED))
822 break;
823 udelay(1);
824 } while (timeout-- > 0);
825
826 atiixp_spdif_enable_transfer(chip, 0);
827}
828
829/* set up slots and formats for SPDIF OUT */
830static int snd_atiixp_spdif_prepare(snd_pcm_substream_t *substream)
831{
832 atiixp_t *chip = snd_pcm_substream_chip(substream);
833
834 spin_lock_irq(&chip->reg_lock);
835 if (chip->spdif_over_aclink) {
836 unsigned int data;
837 /* enable slots 10/11 */
838 atiixp_update(chip, CMD, ATI_REG_CMD_SPDF_CONFIG_MASK,
839 ATI_REG_CMD_SPDF_CONFIG_01);
840 data = atiixp_read(chip, OUT_DMA_SLOT) & ~ATI_REG_OUT_DMA_SLOT_MASK;
841 data |= ATI_REG_OUT_DMA_SLOT_BIT(10) |
842 ATI_REG_OUT_DMA_SLOT_BIT(11);
843 data |= 0x04 << ATI_REG_OUT_DMA_THRESHOLD_SHIFT;
844 atiixp_write(chip, OUT_DMA_SLOT, data);
845 atiixp_update(chip, CMD, ATI_REG_CMD_INTERLEAVE_OUT,
846 substream->runtime->format == SNDRV_PCM_FORMAT_S16_LE ?
847 ATI_REG_CMD_INTERLEAVE_OUT : 0);
848 } else {
849 atiixp_update(chip, CMD, ATI_REG_CMD_SPDF_CONFIG_MASK, 0);
850 atiixp_update(chip, CMD, ATI_REG_CMD_INTERLEAVE_SPDF, 0);
851 }
852 spin_unlock_irq(&chip->reg_lock);
853 return 0;
854}
855
856/* set up slots and formats for analog OUT */
857static int snd_atiixp_playback_prepare(snd_pcm_substream_t *substream)
858{
859 atiixp_t *chip = snd_pcm_substream_chip(substream);
860 unsigned int data;
861
862 spin_lock_irq(&chip->reg_lock);
863 data = atiixp_read(chip, OUT_DMA_SLOT) & ~ATI_REG_OUT_DMA_SLOT_MASK;
864 switch (substream->runtime->channels) {
865 case 8:
866 data |= ATI_REG_OUT_DMA_SLOT_BIT(10) |
867 ATI_REG_OUT_DMA_SLOT_BIT(11);
868 /* fallthru */
869 case 6:
870 data |= ATI_REG_OUT_DMA_SLOT_BIT(7) |
871 ATI_REG_OUT_DMA_SLOT_BIT(8);
872 /* fallthru */
873 case 4:
874 data |= ATI_REG_OUT_DMA_SLOT_BIT(6) |
875 ATI_REG_OUT_DMA_SLOT_BIT(9);
876 /* fallthru */
877 default:
878 data |= ATI_REG_OUT_DMA_SLOT_BIT(3) |
879 ATI_REG_OUT_DMA_SLOT_BIT(4);
880 break;
881 }
882
883 /* set output threshold */
884 data |= 0x04 << ATI_REG_OUT_DMA_THRESHOLD_SHIFT;
885 atiixp_write(chip, OUT_DMA_SLOT, data);
886
887 atiixp_update(chip, CMD, ATI_REG_CMD_INTERLEAVE_OUT,
888 substream->runtime->format == SNDRV_PCM_FORMAT_S16_LE ?
889 ATI_REG_CMD_INTERLEAVE_OUT : 0);
890
891 /*
892 * enable 6 channel re-ordering bit if needed
893 */
894 atiixp_update(chip, 6CH_REORDER, ATI_REG_6CH_REORDER_EN,
895 substream->runtime->channels >= 6 ? ATI_REG_6CH_REORDER_EN: 0);
896
897 spin_unlock_irq(&chip->reg_lock);
898 return 0;
899}
900
901/* set up slots and formats for analog IN */
902static int snd_atiixp_capture_prepare(snd_pcm_substream_t *substream)
903{
904 atiixp_t *chip = snd_pcm_substream_chip(substream);
905
906 spin_lock_irq(&chip->reg_lock);
907 atiixp_update(chip, CMD, ATI_REG_CMD_INTERLEAVE_IN,
908 substream->runtime->format == SNDRV_PCM_FORMAT_S16_LE ?
909 ATI_REG_CMD_INTERLEAVE_IN : 0);
910 spin_unlock_irq(&chip->reg_lock);
911 return 0;
912}
913
914/*
915 * hw_params - allocate the buffer and set up buffer descriptors
916 */
917static int snd_atiixp_pcm_hw_params(snd_pcm_substream_t *substream,
918 snd_pcm_hw_params_t *hw_params)
919{
920 atiixp_t *chip = snd_pcm_substream_chip(substream);
921 atiixp_dma_t *dma = (atiixp_dma_t *)substream->runtime->private_data;
922 int err;
923
924 err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
925 if (err < 0)
926 return err;
927 dma->buf_addr = substream->runtime->dma_addr;
928 dma->buf_bytes = params_buffer_bytes(hw_params);
929
930 err = atiixp_build_dma_packets(chip, dma, substream,
931 params_periods(hw_params),
932 params_period_bytes(hw_params));
933 if (err < 0)
934 return err;
935
936 if (dma->ac97_pcm_type >= 0) {
937 struct ac97_pcm *pcm = chip->pcms[dma->ac97_pcm_type];
938 /* PCM is bound to AC97 codec(s)
939 * set up the AC97 codecs
940 */
941 if (dma->pcm_open_flag) {
942 snd_ac97_pcm_close(pcm);
943 dma->pcm_open_flag = 0;
944 }
945 err = snd_ac97_pcm_open(pcm, params_rate(hw_params),
946 params_channels(hw_params),
947 pcm->r[0].slots);
948 if (err >= 0)
949 dma->pcm_open_flag = 1;
950 }
951
952 return err;
953}
954
955static int snd_atiixp_pcm_hw_free(snd_pcm_substream_t * substream)
956{
957 atiixp_t *chip = snd_pcm_substream_chip(substream);
958 atiixp_dma_t *dma = (atiixp_dma_t *)substream->runtime->private_data;
959
960 if (dma->pcm_open_flag) {
961 struct ac97_pcm *pcm = chip->pcms[dma->ac97_pcm_type];
962 snd_ac97_pcm_close(pcm);
963 dma->pcm_open_flag = 0;
964 }
965 atiixp_clear_dma_packets(chip, dma, substream);
966 snd_pcm_lib_free_pages(substream);
967 return 0;
968}
969
970
971/*
972 * pcm hardware definition, identical for all DMA types
973 */
974static snd_pcm_hardware_t snd_atiixp_pcm_hw =
975{
976 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
977 SNDRV_PCM_INFO_BLOCK_TRANSFER |
978 SNDRV_PCM_INFO_RESUME |
979 SNDRV_PCM_INFO_MMAP_VALID),
980 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE,
981 .rates = SNDRV_PCM_RATE_48000,
982 .rate_min = 48000,
983 .rate_max = 48000,
984 .channels_min = 2,
985 .channels_max = 2,
986 .buffer_bytes_max = 256 * 1024,
987 .period_bytes_min = 32,
988 .period_bytes_max = 128 * 1024,
989 .periods_min = 2,
990 .periods_max = ATI_MAX_DESCRIPTORS,
991};
992
993static int snd_atiixp_pcm_open(snd_pcm_substream_t *substream, atiixp_dma_t *dma, int pcm_type)
994{
995 atiixp_t *chip = snd_pcm_substream_chip(substream);
996 snd_pcm_runtime_t *runtime = substream->runtime;
997 int err;
998
999 snd_assert(dma->ops && dma->ops->enable_dma, return -EINVAL);
1000
1001 if (dma->opened)
1002 return -EBUSY;
1003 dma->substream = substream;
1004 runtime->hw = snd_atiixp_pcm_hw;
1005 dma->ac97_pcm_type = pcm_type;
1006 if (pcm_type >= 0) {
1007 runtime->hw.rates = chip->pcms[pcm_type]->rates;
1008 snd_pcm_limit_hw_rates(runtime);
1009 } else {
1010 /* direct SPDIF */
1011 runtime->hw.formats = SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE;
1012 }
1013 if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
1014 return err;
1015 runtime->private_data = dma;
1016
1017 /* enable DMA bits */
1018 spin_lock_irq(&chip->reg_lock);
1019 dma->ops->enable_dma(chip, 1);
1020 spin_unlock_irq(&chip->reg_lock);
1021 dma->opened = 1;
1022
1023 return 0;
1024}
1025
1026static int snd_atiixp_pcm_close(snd_pcm_substream_t *substream, atiixp_dma_t *dma)
1027{
1028 atiixp_t *chip = snd_pcm_substream_chip(substream);
1029 /* disable DMA bits */
1030 snd_assert(dma->ops && dma->ops->enable_dma, return -EINVAL);
1031 spin_lock_irq(&chip->reg_lock);
1032 dma->ops->enable_dma(chip, 0);
1033 spin_unlock_irq(&chip->reg_lock);
1034 dma->substream = NULL;
1035 dma->opened = 0;
1036 return 0;
1037}
1038
1039/*
1040 */
1041static int snd_atiixp_playback_open(snd_pcm_substream_t *substream)
1042{
1043 atiixp_t *chip = snd_pcm_substream_chip(substream);
1044 int err;
1045
1046 down(&chip->open_mutex);
1047 err = snd_atiixp_pcm_open(substream, &chip->dmas[ATI_DMA_PLAYBACK], 0);
1048 up(&chip->open_mutex);
1049 if (err < 0)
1050 return err;
1051 substream->runtime->hw.channels_max = chip->max_channels;
1052 if (chip->max_channels > 2)
1053 /* channels must be even */
1054 snd_pcm_hw_constraint_step(substream->runtime, 0,
1055 SNDRV_PCM_HW_PARAM_CHANNELS, 2);
1056 return 0;
1057}
1058
1059static int snd_atiixp_playback_close(snd_pcm_substream_t *substream)
1060{
1061 atiixp_t *chip = snd_pcm_substream_chip(substream);
1062 int err;
1063 down(&chip->open_mutex);
1064 err = snd_atiixp_pcm_close(substream, &chip->dmas[ATI_DMA_PLAYBACK]);
1065 up(&chip->open_mutex);
1066 return err;
1067}
1068
1069static int snd_atiixp_capture_open(snd_pcm_substream_t *substream)
1070{
1071 atiixp_t *chip = snd_pcm_substream_chip(substream);
1072 return snd_atiixp_pcm_open(substream, &chip->dmas[ATI_DMA_CAPTURE], 1);
1073}
1074
1075static int snd_atiixp_capture_close(snd_pcm_substream_t *substream)
1076{
1077 atiixp_t *chip = snd_pcm_substream_chip(substream);
1078 return snd_atiixp_pcm_close(substream, &chip->dmas[ATI_DMA_CAPTURE]);
1079}
1080
1081static int snd_atiixp_spdif_open(snd_pcm_substream_t *substream)
1082{
1083 atiixp_t *chip = snd_pcm_substream_chip(substream);
1084 int err;
1085 down(&chip->open_mutex);
1086 if (chip->spdif_over_aclink) /* share DMA_PLAYBACK */
1087 err = snd_atiixp_pcm_open(substream, &chip->dmas[ATI_DMA_PLAYBACK], 2);
1088 else
1089 err = snd_atiixp_pcm_open(substream, &chip->dmas[ATI_DMA_SPDIF], -1);
1090 up(&chip->open_mutex);
1091 return err;
1092}
1093
1094static int snd_atiixp_spdif_close(snd_pcm_substream_t *substream)
1095{
1096 atiixp_t *chip = snd_pcm_substream_chip(substream);
1097 int err;
1098 down(&chip->open_mutex);
1099 if (chip->spdif_over_aclink)
1100 err = snd_atiixp_pcm_close(substream, &chip->dmas[ATI_DMA_PLAYBACK]);
1101 else
1102 err = snd_atiixp_pcm_close(substream, &chip->dmas[ATI_DMA_SPDIF]);
1103 up(&chip->open_mutex);
1104 return err;
1105}
1106
1107/* AC97 playback */
1108static snd_pcm_ops_t snd_atiixp_playback_ops = {
1109 .open = snd_atiixp_playback_open,
1110 .close = snd_atiixp_playback_close,
1111 .ioctl = snd_pcm_lib_ioctl,
1112 .hw_params = snd_atiixp_pcm_hw_params,
1113 .hw_free = snd_atiixp_pcm_hw_free,
1114 .prepare = snd_atiixp_playback_prepare,
1115 .trigger = snd_atiixp_pcm_trigger,
1116 .pointer = snd_atiixp_pcm_pointer,
1117};
1118
1119/* AC97 capture */
1120static snd_pcm_ops_t snd_atiixp_capture_ops = {
1121 .open = snd_atiixp_capture_open,
1122 .close = snd_atiixp_capture_close,
1123 .ioctl = snd_pcm_lib_ioctl,
1124 .hw_params = snd_atiixp_pcm_hw_params,
1125 .hw_free = snd_atiixp_pcm_hw_free,
1126 .prepare = snd_atiixp_capture_prepare,
1127 .trigger = snd_atiixp_pcm_trigger,
1128 .pointer = snd_atiixp_pcm_pointer,
1129};
1130
1131/* SPDIF playback */
1132static snd_pcm_ops_t snd_atiixp_spdif_ops = {
1133 .open = snd_atiixp_spdif_open,
1134 .close = snd_atiixp_spdif_close,
1135 .ioctl = snd_pcm_lib_ioctl,
1136 .hw_params = snd_atiixp_pcm_hw_params,
1137 .hw_free = snd_atiixp_pcm_hw_free,
1138 .prepare = snd_atiixp_spdif_prepare,
1139 .trigger = snd_atiixp_pcm_trigger,
1140 .pointer = snd_atiixp_pcm_pointer,
1141};
1142
1143static struct ac97_pcm atiixp_pcm_defs[] __devinitdata = {
1144 /* front PCM */
1145 {
1146 .exclusive = 1,
1147 .r = { {
1148 .slots = (1 << AC97_SLOT_PCM_LEFT) |
1149 (1 << AC97_SLOT_PCM_RIGHT) |
1150 (1 << AC97_SLOT_PCM_CENTER) |
1151 (1 << AC97_SLOT_PCM_SLEFT) |
1152 (1 << AC97_SLOT_PCM_SRIGHT) |
1153 (1 << AC97_SLOT_LFE)
1154 }
1155 }
1156 },
1157 /* PCM IN #1 */
1158 {
1159 .stream = 1,
1160 .exclusive = 1,
1161 .r = { {
1162 .slots = (1 << AC97_SLOT_PCM_LEFT) |
1163 (1 << AC97_SLOT_PCM_RIGHT)
1164 }
1165 }
1166 },
1167 /* S/PDIF OUT (optional) */
1168 {
1169 .exclusive = 1,
1170 .spdif = 1,
1171 .r = { {
1172 .slots = (1 << AC97_SLOT_SPDIF_LEFT2) |
1173 (1 << AC97_SLOT_SPDIF_RIGHT2)
1174 }
1175 }
1176 },
1177};
1178
1179static atiixp_dma_ops_t snd_atiixp_playback_dma_ops = {
1180 .type = ATI_DMA_PLAYBACK,
1181 .llp_offset = ATI_REG_OUT_DMA_LINKPTR,
1182 .dt_cur = ATI_REG_OUT_DMA_DT_CUR,
1183 .enable_dma = atiixp_out_enable_dma,
1184 .enable_transfer = atiixp_out_enable_transfer,
1185 .flush_dma = atiixp_out_flush_dma,
1186};
1187
1188static atiixp_dma_ops_t snd_atiixp_capture_dma_ops = {
1189 .type = ATI_DMA_CAPTURE,
1190 .llp_offset = ATI_REG_IN_DMA_LINKPTR,
1191 .dt_cur = ATI_REG_IN_DMA_DT_CUR,
1192 .enable_dma = atiixp_in_enable_dma,
1193 .enable_transfer = atiixp_in_enable_transfer,
1194 .flush_dma = atiixp_in_flush_dma,
1195};
1196
1197static atiixp_dma_ops_t snd_atiixp_spdif_dma_ops = {
1198 .type = ATI_DMA_SPDIF,
1199 .llp_offset = ATI_REG_SPDF_DMA_LINKPTR,
1200 .dt_cur = ATI_REG_SPDF_DMA_DT_CUR,
1201 .enable_dma = atiixp_spdif_enable_dma,
1202 .enable_transfer = atiixp_spdif_enable_transfer,
1203 .flush_dma = atiixp_spdif_flush_dma,
1204};
1205
1206
1207static int __devinit snd_atiixp_pcm_new(atiixp_t *chip)
1208{
1209 snd_pcm_t *pcm;
1210 ac97_bus_t *pbus = chip->ac97_bus;
1211 int err, i, num_pcms;
1212
1213 /* initialize constants */
1214 chip->dmas[ATI_DMA_PLAYBACK].ops = &snd_atiixp_playback_dma_ops;
1215 chip->dmas[ATI_DMA_CAPTURE].ops = &snd_atiixp_capture_dma_ops;
1216 if (! chip->spdif_over_aclink)
1217 chip->dmas[ATI_DMA_SPDIF].ops = &snd_atiixp_spdif_dma_ops;
1218
1219 /* assign AC97 pcm */
1220 if (chip->spdif_over_aclink)
1221 num_pcms = 3;
1222 else
1223 num_pcms = 2;
1224 err = snd_ac97_pcm_assign(pbus, num_pcms, atiixp_pcm_defs);
1225 if (err < 0)
1226 return err;
1227 for (i = 0; i < num_pcms; i++)
1228 chip->pcms[i] = &pbus->pcms[i];
1229
1230 chip->max_channels = 2;
1231 if (pbus->pcms[ATI_PCM_OUT].r[0].slots & (1 << AC97_SLOT_PCM_SLEFT)) {
1232 if (pbus->pcms[ATI_PCM_OUT].r[0].slots & (1 << AC97_SLOT_LFE))
1233 chip->max_channels = 6;
1234 else
1235 chip->max_channels = 4;
1236 }
1237
1238 /* PCM #0: analog I/O */
1239 err = snd_pcm_new(chip->card, "ATI IXP AC97", ATI_PCMDEV_ANALOG, 1, 1, &pcm);
1240 if (err < 0)
1241 return err;
1242 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_atiixp_playback_ops);
1243 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_atiixp_capture_ops);
1244 pcm->private_data = chip;
1245 strcpy(pcm->name, "ATI IXP AC97");
1246 chip->pcmdevs[ATI_PCMDEV_ANALOG] = pcm;
1247
1248 snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1249 snd_dma_pci_data(chip->pci), 64*1024, 128*1024);
1250
1251 /* no SPDIF support on codec? */
1252 if (chip->pcms[ATI_PCM_SPDIF] && ! chip->pcms[ATI_PCM_SPDIF]->rates)
1253 return 0;
1254
1255 /* FIXME: non-48k sample rate doesn't work on my test machine with AD1888 */
1256 if (chip->pcms[ATI_PCM_SPDIF])
1257 chip->pcms[ATI_PCM_SPDIF]->rates = SNDRV_PCM_RATE_48000;
1258
1259 /* PCM #1: spdif playback */
1260 err = snd_pcm_new(chip->card, "ATI IXP IEC958", ATI_PCMDEV_DIGITAL, 1, 0, &pcm);
1261 if (err < 0)
1262 return err;
1263 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_atiixp_spdif_ops);
1264 pcm->private_data = chip;
1265 if (chip->spdif_over_aclink)
1266 strcpy(pcm->name, "ATI IXP IEC958 (AC97)");
1267 else
1268 strcpy(pcm->name, "ATI IXP IEC958 (Direct)");
1269 chip->pcmdevs[ATI_PCMDEV_DIGITAL] = pcm;
1270
1271 snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1272 snd_dma_pci_data(chip->pci), 64*1024, 128*1024);
1273
1274 /* pre-select AC97 SPDIF slots 10/11 */
1275 for (i = 0; i < NUM_ATI_CODECS; i++) {
1276 if (chip->ac97[i])
1277 snd_ac97_update_bits(chip->ac97[i], AC97_EXTENDED_STATUS, 0x03 << 4, 0x03 << 4);
1278 }
1279
1280 return 0;
1281}
1282
1283
1284
1285/*
1286 * interrupt handler
1287 */
1288static irqreturn_t snd_atiixp_interrupt(int irq, void *dev_id, struct pt_regs *regs)
1289{
1290 atiixp_t *chip = dev_id;
1291 unsigned int status;
1292
1293 status = atiixp_read(chip, ISR);
1294
1295 if (! status)
1296 return IRQ_NONE;
1297
1298 /* process audio DMA */
1299 if (status & ATI_REG_ISR_OUT_XRUN)
1300 snd_atiixp_xrun_dma(chip, &chip->dmas[ATI_DMA_PLAYBACK]);
1301 else if (status & ATI_REG_ISR_OUT_STATUS)
1302 snd_atiixp_update_dma(chip, &chip->dmas[ATI_DMA_PLAYBACK]);
1303 if (status & ATI_REG_ISR_IN_XRUN)
1304 snd_atiixp_xrun_dma(chip, &chip->dmas[ATI_DMA_CAPTURE]);
1305 else if (status & ATI_REG_ISR_IN_STATUS)
1306 snd_atiixp_update_dma(chip, &chip->dmas[ATI_DMA_CAPTURE]);
1307 if (! chip->spdif_over_aclink) {
1308 if (status & ATI_REG_ISR_SPDF_XRUN)
1309 snd_atiixp_xrun_dma(chip, &chip->dmas[ATI_DMA_SPDIF]);
1310 else if (status & ATI_REG_ISR_SPDF_STATUS)
1311 snd_atiixp_update_dma(chip, &chip->dmas[ATI_DMA_SPDIF]);
1312 }
1313
1314 /* for codec detection */
1315 if (status & CODEC_CHECK_BITS) {
1316 unsigned int detected;
1317 detected = status & CODEC_CHECK_BITS;
1318 spin_lock(&chip->reg_lock);
1319 chip->codec_not_ready_bits |= detected;
1320 atiixp_update(chip, IER, detected, 0); /* disable the detected irqs */
1321 spin_unlock(&chip->reg_lock);
1322 }
1323
1324 /* ack */
1325 atiixp_write(chip, ISR, status);
1326
1327 return IRQ_HANDLED;
1328}
1329
1330
1331/*
1332 * ac97 mixer section
1333 */
1334
1335static struct ac97_quirk ac97_quirks[] __devinitdata = {
1336 {
1337 .vendor = 0x103c,
1338 .device = 0x006b,
1339 .name = "HP Pavilion ZV5030US",
1340 .type = AC97_TUNE_MUTE_LED
1341 },
1342 { } /* terminator */
1343};
1344
1345static int __devinit snd_atiixp_mixer_new(atiixp_t *chip, int clock, const char *quirk_override)
1346{
1347 ac97_bus_t *pbus;
1348 ac97_template_t ac97;
1349 int i, err;
1350 int codec_count;
1351 static ac97_bus_ops_t ops = {
1352 .write = snd_atiixp_ac97_write,
1353 .read = snd_atiixp_ac97_read,
1354 };
1355 static unsigned int codec_skip[NUM_ATI_CODECS] = {
1356 ATI_REG_ISR_CODEC0_NOT_READY,
1357 ATI_REG_ISR_CODEC1_NOT_READY,
1358 ATI_REG_ISR_CODEC2_NOT_READY,
1359 };
1360
1361 if (snd_atiixp_codec_detect(chip) < 0)
1362 return -ENXIO;
1363
1364 if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &pbus)) < 0)
1365 return err;
1366 pbus->clock = clock;
1367 pbus->shared_type = AC97_SHARED_TYPE_ATIIXP; /* shared with modem driver */
1368 chip->ac97_bus = pbus;
1369
1370 codec_count = 0;
1371 for (i = 0; i < NUM_ATI_CODECS; i++) {
1372 if (chip->codec_not_ready_bits & codec_skip[i])
1373 continue;
1374 memset(&ac97, 0, sizeof(ac97));
1375 ac97.private_data = chip;
1376 ac97.pci = chip->pci;
1377 ac97.num = i;
1378 ac97.scaps = AC97_SCAP_SKIP_MODEM;
1379 if (! chip->spdif_over_aclink)
1380 ac97.scaps |= AC97_SCAP_NO_SPDIF;
1381 if ((err = snd_ac97_mixer(pbus, &ac97, &chip->ac97[i])) < 0) {
1382 chip->ac97[i] = NULL; /* to be sure */
1383 snd_printdd("atiixp: codec %d not available for audio\n", i);
1384 continue;
1385 }
1386 codec_count++;
1387 }
1388
1389 if (! codec_count) {
1390 snd_printk(KERN_ERR "atiixp: no codec available\n");
1391 return -ENODEV;
1392 }
1393
1394 snd_ac97_tune_hardware(chip->ac97[0], ac97_quirks, quirk_override);
1395
1396 return 0;
1397}
1398
1399
1400#ifdef CONFIG_PM
1401/*
1402 * power management
1403 */
1404static int snd_atiixp_suspend(snd_card_t *card, pm_message_t state)
1405{
1406 atiixp_t *chip = card->pm_private_data;
1407 int i;
1408
1409 for (i = 0; i < NUM_ATI_PCMDEVS; i++)
1410 if (chip->pcmdevs[i]) {
1411 atiixp_dma_t *dma = &chip->dmas[i];
1412 if (dma->substream && dma->running)
1413 dma->saved_curptr = readl(chip->remap_addr + dma->ops->dt_cur);
1414 snd_pcm_suspend_all(chip->pcmdevs[i]);
1415 }
1416 for (i = 0; i < NUM_ATI_CODECS; i++)
1417 if (chip->ac97[i])
1418 snd_ac97_suspend(chip->ac97[i]);
1419 snd_atiixp_aclink_down(chip);
1420 snd_atiixp_chip_stop(chip);
1421
1422 pci_set_power_state(chip->pci, 3);
1423 pci_disable_device(chip->pci);
1424 return 0;
1425}
1426
1427static int snd_atiixp_resume(snd_card_t *card)
1428{
1429 atiixp_t *chip = card->pm_private_data;
1430 int i;
1431
1432 pci_enable_device(chip->pci);
1433 pci_set_power_state(chip->pci, 0);
1434 pci_set_master(chip->pci);
1435
1436 snd_atiixp_aclink_reset(chip);
1437 snd_atiixp_chip_start(chip);
1438
1439 for (i = 0; i < NUM_ATI_CODECS; i++)
1440 if (chip->ac97[i])
1441 snd_ac97_resume(chip->ac97[i]);
1442
1443 for (i = 0; i < NUM_ATI_PCMDEVS; i++)
1444 if (chip->pcmdevs[i]) {
1445 atiixp_dma_t *dma = &chip->dmas[i];
1446 if (dma->substream && dma->running) {
1447 dma->ops->enable_dma(chip, 1);
1448 writel((u32)dma->desc_buf.addr | ATI_REG_LINKPTR_EN,
1449 chip->remap_addr + dma->ops->llp_offset);
1450 writel(dma->saved_curptr, chip->remap_addr + dma->ops->dt_cur);
1451 }
1452 }
1453
1454 return 0;
1455}
1456#endif /* CONFIG_PM */
1457
1458
1459/*
1460 * proc interface for register dump
1461 */
1462
1463static void snd_atiixp_proc_read(snd_info_entry_t *entry, snd_info_buffer_t *buffer)
1464{
1465 atiixp_t *chip = entry->private_data;
1466 int i;
1467
1468 for (i = 0; i < 256; i += 4)
1469 snd_iprintf(buffer, "%02x: %08x\n", i, readl(chip->remap_addr + i));
1470}
1471
1472static void __devinit snd_atiixp_proc_init(atiixp_t *chip)
1473{
1474 snd_info_entry_t *entry;
1475
1476 if (! snd_card_proc_new(chip->card, "atiixp", &entry))
1477 snd_info_set_text_ops(entry, chip, 1024, snd_atiixp_proc_read);
1478}
1479
1480
1481
1482/*
1483 * destructor
1484 */
1485
1486static int snd_atiixp_free(atiixp_t *chip)
1487{
1488 if (chip->irq < 0)
1489 goto __hw_end;
1490 snd_atiixp_chip_stop(chip);
1491 synchronize_irq(chip->irq);
1492 __hw_end:
1493 if (chip->irq >= 0)
1494 free_irq(chip->irq, (void *)chip);
1495 if (chip->remap_addr)
1496 iounmap(chip->remap_addr);
1497 pci_release_regions(chip->pci);
1498 pci_disable_device(chip->pci);
1499 kfree(chip);
1500 return 0;
1501}
1502
1503static int snd_atiixp_dev_free(snd_device_t *device)
1504{
1505 atiixp_t *chip = device->device_data;
1506 return snd_atiixp_free(chip);
1507}
1508
1509/*
1510 * constructor for chip instance
1511 */
1512static int __devinit snd_atiixp_create(snd_card_t *card,
1513 struct pci_dev *pci,
1514 atiixp_t **r_chip)
1515{
1516 static snd_device_ops_t ops = {
1517 .dev_free = snd_atiixp_dev_free,
1518 };
1519 atiixp_t *chip;
1520 int err;
1521
1522 if ((err = pci_enable_device(pci)) < 0)
1523 return err;
1524
1525 chip = kcalloc(1, sizeof(*chip), GFP_KERNEL);
1526 if (chip == NULL) {
1527 pci_disable_device(pci);
1528 return -ENOMEM;
1529 }
1530
1531 spin_lock_init(&chip->reg_lock);
1532 init_MUTEX(&chip->open_mutex);
1533 chip->card = card;
1534 chip->pci = pci;
1535 chip->irq = -1;
1536 if ((err = pci_request_regions(pci, "ATI IXP AC97")) < 0) {
1537 pci_disable_device(pci);
1538 kfree(chip);
1539 return err;
1540 }
1541 chip->addr = pci_resource_start(pci, 0);
1542 chip->remap_addr = ioremap_nocache(chip->addr, pci_resource_len(pci, 0));
1543 if (chip->remap_addr == NULL) {
1544 snd_printk(KERN_ERR "AC'97 space ioremap problem\n");
1545 snd_atiixp_free(chip);
1546 return -EIO;
1547 }
1548
1549 if (request_irq(pci->irq, snd_atiixp_interrupt, SA_INTERRUPT|SA_SHIRQ, card->shortname, (void *)chip)) {
1550 snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq);
1551 snd_atiixp_free(chip);
1552 return -EBUSY;
1553 }
1554 chip->irq = pci->irq;
1555 pci_set_master(pci);
1556 synchronize_irq(chip->irq);
1557
1558 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1559 snd_atiixp_free(chip);
1560 return err;
1561 }
1562
1563 snd_card_set_dev(card, &pci->dev);
1564
1565 *r_chip = chip;
1566 return 0;
1567}
1568
1569
1570static int __devinit snd_atiixp_probe(struct pci_dev *pci,
1571 const struct pci_device_id *pci_id)
1572{
1573 static int dev;
1574 snd_card_t *card;
1575 atiixp_t *chip;
1576 unsigned char revision;
1577 int err;
1578
1579 if (dev >= SNDRV_CARDS)
1580 return -ENODEV;
1581 if (!enable[dev]) {
1582 dev++;
1583 return -ENOENT;
1584 }
1585
1586 card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
1587 if (card == NULL)
1588 return -ENOMEM;
1589
1590 pci_read_config_byte(pci, PCI_REVISION_ID, &revision);
1591
1592 strcpy(card->driver, spdif_aclink[dev] ? "ATIIXP" : "ATIIXP-SPDMA");
1593 strcpy(card->shortname, "ATI IXP");
1594 if ((err = snd_atiixp_create(card, pci, &chip)) < 0)
1595 goto __error;
1596
1597 if ((err = snd_atiixp_aclink_reset(chip)) < 0)
1598 goto __error;
1599
1600 chip->spdif_over_aclink = spdif_aclink[dev];
1601
1602 if ((err = snd_atiixp_mixer_new(chip, ac97_clock[dev], ac97_quirk[dev])) < 0)
1603 goto __error;
1604
1605 if ((err = snd_atiixp_pcm_new(chip)) < 0)
1606 goto __error;
1607
1608 snd_atiixp_proc_init(chip);
1609
1610 snd_atiixp_chip_start(chip);
1611
1612 snprintf(card->longname, sizeof(card->longname),
1613 "%s rev %x with %s at %#lx, irq %i", card->shortname, revision,
1614 chip->ac97[0] ? snd_ac97_get_short_name(chip->ac97[0]) : "?",
1615 chip->addr, chip->irq);
1616
1617 snd_card_set_pm_callback(card, snd_atiixp_suspend, snd_atiixp_resume, chip);
1618
1619 if ((err = snd_card_register(card)) < 0)
1620 goto __error;
1621
1622 pci_set_drvdata(pci, card);
1623 dev++;
1624 return 0;
1625
1626 __error:
1627 snd_card_free(card);
1628 return err;
1629}
1630
1631static void __devexit snd_atiixp_remove(struct pci_dev *pci)
1632{
1633 snd_card_free(pci_get_drvdata(pci));
1634 pci_set_drvdata(pci, NULL);
1635}
1636
1637static struct pci_driver driver = {
1638 .name = "ATI IXP AC97 controller",
1639 .id_table = snd_atiixp_ids,
1640 .probe = snd_atiixp_probe,
1641 .remove = __devexit_p(snd_atiixp_remove),
1642 SND_PCI_PM_CALLBACKS
1643};
1644
1645
1646static int __init alsa_card_atiixp_init(void)
1647{
01d25d46 1648 return pci_register_driver(&driver);
1da177e4
LT		 1649}
1650
1651static void __exit alsa_card_atiixp_exit(void)
1652{
1653 pci_unregister_driver(&driver);
1654}
1655
1656module_init(alsa_card_atiixp_init)
1657module_exit(alsa_card_atiixp_exit)
Linux 6.x block layer and io_uring tree(s)