1	// SPDX-License-Identifier: GPL-2.0-or-later
2	/*
3	* ALSA driver for VIA VT82xx (South Bridge)
4	*
5	* VT82C686A/B/C, VT8233A/C, VT8235
6	*
7	* Copyright (c) 2000 Jaroslav Kysela <perex@perex.cz>
8	* Tjeerd.Mulder <Tjeerd.Mulder@fujitsu-siemens.com>
9	* 2002 Takashi Iwai <tiwai@suse.de>
10	*/
11
12	/*
13	* Changes:
14	*
15	* Dec. 19, 2002 Takashi Iwai <tiwai@suse.de>
16	* - use the DSX channels for the first pcm playback.
17	* (on VIA8233, 8233C and 8235 only)
18	* this will allow you play simultaneously up to 4 streams.
19	* multi-channel playback is assigned to the second device
20	* on these chips.
21	* - support the secondary capture (on VIA8233/C,8235)
22	* - SPDIF support
23	* the DSX3 channel can be used for SPDIF output.
24	* on VIA8233A, this channel is assigned to the second pcm
25	* playback.
26	* the card config of alsa-lib will assign the correct
27	* device for applications.
28	* - clean up the code, separate low-level initialization
29	* routines for each chipset.
30	*
31	* Sep. 26, 2005 Karsten Wiese <annabellesgarden@yahoo.de>
32	* - Optimize position calculation for the 823x chips.
33	*/
34
35	#include <linux/io.h>
36	#include <linux/delay.h>
37	#include <linux/interrupt.h>
38	#include <linux/init.h>
39	#include <linux/pci.h>
40	#include <linux/slab.h>
41	#include <linux/gameport.h>
42	#include <linux/module.h>
43	#include <sound/core.h>
44	#include <sound/pcm.h>
45	#include <sound/pcm_params.h>
46	#include <sound/info.h>
47	#include <sound/tlv.h>
48	#include <sound/ac97_codec.h>
49	#include <sound/mpu401.h>
50	#include <sound/initval.h>
51
52	#if 0
53	#define POINTER_DEBUG
54	#endif
55
56	MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
57	MODULE_DESCRIPTION("VIA VT82xx audio");
58	MODULE_LICENSE("GPL");
59
60	#if IS_REACHABLE(CONFIG_GAMEPORT)
61	#define SUPPORT_JOYSTICK 1
62	#endif
63
64	static int index = SNDRV_DEFAULT_IDX1; /* Index 0-MAX */
65	static char *id = SNDRV_DEFAULT_STR1; /* ID for this card */
66	static long mpu_port;
67	#ifdef SUPPORT_JOYSTICK
68	static bool joystick;
69	#endif
70	static int ac97_clock = 48000;
71	static char *ac97_quirk;
72	static int dxs_support;
73	static int dxs_init_volume = 31;
74	static int nodelay;
75
76	module_param(index, int, 0444);
77	MODULE_PARM_DESC(index, "Index value for VIA 82xx bridge.");
78	module_param(id, charp, 0444);
79	MODULE_PARM_DESC(id, "ID string for VIA 82xx bridge.");
80	module_param_hw(mpu_port, long, ioport, 0444);
81	MODULE_PARM_DESC(mpu_port, "MPU-401 port. (VT82C686x only)");
82	#ifdef SUPPORT_JOYSTICK
83	module_param(joystick, bool, 0444);
84	MODULE_PARM_DESC(joystick, "Enable joystick. (VT82C686x only)");
85	#endif
86	module_param(ac97_clock, int, 0444);
87	MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz).");
88	module_param(ac97_quirk, charp, 0444);
89	MODULE_PARM_DESC(ac97_quirk, "AC'97 workaround for strange hardware.");
90	module_param(dxs_support, int, 0444);
91	MODULE_PARM_DESC(dxs_support, "Support for DXS channels (0 = auto, 1 = enable, 2 = disable, 3 = 48k only, 4 = no VRA, 5 = enable any sample rate)");
92	module_param(dxs_init_volume, int, 0644);
93	MODULE_PARM_DESC(dxs_init_volume, "initial DXS volume (0-31)");
94	module_param(nodelay, int, 0444);
95	MODULE_PARM_DESC(nodelay, "Disable 500ms init delay");
96
97	/* just for backward compatibility */
98	static bool enable;
99	module_param(enable, bool, 0444);
100
101
102	/* revision numbers for via686 */
103	#define VIA_REV_686_A 0x10
104	#define VIA_REV_686_B 0x11
105	#define VIA_REV_686_C 0x12
106	#define VIA_REV_686_D 0x13
107	#define VIA_REV_686_E 0x14
108	#define VIA_REV_686_H 0x20
109
110	/* revision numbers for via8233 */
111	#define VIA_REV_PRE_8233 0x10 /* not in market */
112	#define VIA_REV_8233C 0x20 /* 2 rec, 4 pb, 1 multi-pb */
113	#define VIA_REV_8233 0x30 /* 2 rec, 4 pb, 1 multi-pb, spdif */
114	#define VIA_REV_8233A 0x40 /* 1 rec, 1 multi-pb, spdf */
115	#define VIA_REV_8235 0x50 /* 2 rec, 4 pb, 1 multi-pb, spdif */
116	#define VIA_REV_8237 0x60
117	#define VIA_REV_8251 0x70
118
119	/*
120	* Direct registers
121	*/
122
123	#define VIAREG(via, x) ((via)->port + VIA_REG_##x)
124	#define VIADEV_REG(viadev, x) ((viadev)->port + VIA_REG_##x)
125
126	/* common offsets */
127	#define VIA_REG_OFFSET_STATUS 0x00 /* byte - channel status */
128	#define VIA_REG_STAT_ACTIVE 0x80 /* RO */
129	#define VIA8233_SHADOW_STAT_ACTIVE 0x08 /* RO */
130	#define VIA_REG_STAT_PAUSED 0x40 /* RO */
131	#define VIA_REG_STAT_TRIGGER_QUEUED 0x08 /* RO */
132	#define VIA_REG_STAT_STOPPED 0x04 /* RWC */
133	#define VIA_REG_STAT_EOL 0x02 /* RWC */
134	#define VIA_REG_STAT_FLAG 0x01 /* RWC */
135	#define VIA_REG_OFFSET_CONTROL 0x01 /* byte - channel control */
136	#define VIA_REG_CTRL_START 0x80 /* WO */
137	#define VIA_REG_CTRL_TERMINATE 0x40 /* WO */
138	#define VIA_REG_CTRL_AUTOSTART 0x20
139	#define VIA_REG_CTRL_PAUSE 0x08 /* RW */
140	#define VIA_REG_CTRL_INT_STOP 0x04
141	#define VIA_REG_CTRL_INT_EOL 0x02
142	#define VIA_REG_CTRL_INT_FLAG 0x01
143	#define VIA_REG_CTRL_RESET 0x01 /* RW - probably reset? undocumented */
144	#define VIA_REG_CTRL_INT (VIA_REG_CTRL_INT_FLAG | VIA_REG_CTRL_INT_EOL | VIA_REG_CTRL_AUTOSTART)
145	#define VIA_REG_OFFSET_TYPE 0x02 /* byte - channel type (686 only) */
146	#define VIA_REG_TYPE_AUTOSTART 0x80 /* RW - autostart at EOL */
147	#define VIA_REG_TYPE_16BIT 0x20 /* RW */
148	#define VIA_REG_TYPE_STEREO 0x10 /* RW */
149	#define VIA_REG_TYPE_INT_LLINE 0x00
150	#define VIA_REG_TYPE_INT_LSAMPLE 0x04
151	#define VIA_REG_TYPE_INT_LESSONE 0x08
152	#define VIA_REG_TYPE_INT_MASK 0x0c
153	#define VIA_REG_TYPE_INT_EOL 0x02
154	#define VIA_REG_TYPE_INT_FLAG 0x01
155	#define VIA_REG_OFFSET_TABLE_PTR 0x04 /* dword - channel table pointer */
156	#define VIA_REG_OFFSET_CURR_PTR 0x04 /* dword - channel current pointer */
157	#define VIA_REG_OFFSET_STOP_IDX 0x08 /* dword - stop index, channel type, sample rate */
158	#define VIA8233_REG_TYPE_16BIT 0x00200000 /* RW */
159	#define VIA8233_REG_TYPE_STEREO 0x00100000 /* RW */
160	#define VIA_REG_OFFSET_CURR_COUNT 0x0c /* dword - channel current count (24 bit) */
161	#define VIA_REG_OFFSET_CURR_INDEX 0x0f /* byte - channel current index (for via8233 only) */
162
163	#define DEFINE_VIA_REGSET(name,val) \
164	enum {\
165	VIA_REG_##name##_STATUS = (val),\
166	VIA_REG_##name##_CONTROL = (val) + 0x01,\
167	VIA_REG_##name##_TYPE = (val) + 0x02,\
168	VIA_REG_##name##_TABLE_PTR = (val) + 0x04,\
169	VIA_REG_##name##_CURR_PTR = (val) + 0x04,\
170	VIA_REG_##name##_STOP_IDX = (val) + 0x08,\
171	VIA_REG_##name##_CURR_COUNT = (val) + 0x0c,\
172	}
173
174	/* playback block */
175	DEFINE_VIA_REGSET(PLAYBACK, 0x00);
176	DEFINE_VIA_REGSET(CAPTURE, 0x10);
177	DEFINE_VIA_REGSET(FM, 0x20);
178
179	/* AC'97 */
180	#define VIA_REG_AC97 0x80 /* dword */
181	#define VIA_REG_AC97_CODEC_ID_MASK (3<<30)
182	#define VIA_REG_AC97_CODEC_ID_SHIFT 30
183	#define VIA_REG_AC97_CODEC_ID_PRIMARY 0x00
184	#define VIA_REG_AC97_CODEC_ID_SECONDARY 0x01
185	#define VIA_REG_AC97_SECONDARY_VALID (1<<27)
186	#define VIA_REG_AC97_PRIMARY_VALID (1<<25)
187	#define VIA_REG_AC97_BUSY (1<<24)
188	#define VIA_REG_AC97_READ (1<<23)
189	#define VIA_REG_AC97_CMD_SHIFT 16
190	#define VIA_REG_AC97_CMD_MASK 0x7e
191	#define VIA_REG_AC97_DATA_SHIFT 0
192	#define VIA_REG_AC97_DATA_MASK 0xffff
193
194	#define VIA_REG_SGD_SHADOW 0x84 /* dword */
195	/* via686 */
196	#define VIA_REG_SGD_STAT_PB_FLAG (1<<0)
197	#define VIA_REG_SGD_STAT_CP_FLAG (1<<1)
198	#define VIA_REG_SGD_STAT_FM_FLAG (1<<2)
199	#define VIA_REG_SGD_STAT_PB_EOL (1<<4)
200	#define VIA_REG_SGD_STAT_CP_EOL (1<<5)
201	#define VIA_REG_SGD_STAT_FM_EOL (1<<6)
202	#define VIA_REG_SGD_STAT_PB_STOP (1<<8)
203	#define VIA_REG_SGD_STAT_CP_STOP (1<<9)
204	#define VIA_REG_SGD_STAT_FM_STOP (1<<10)
205	#define VIA_REG_SGD_STAT_PB_ACTIVE (1<<12)
206	#define VIA_REG_SGD_STAT_CP_ACTIVE (1<<13)
207	#define VIA_REG_SGD_STAT_FM_ACTIVE (1<<14)
208	/* via8233 */
209	#define VIA8233_REG_SGD_STAT_FLAG (1<<0)
210	#define VIA8233_REG_SGD_STAT_EOL (1<<1)
211	#define VIA8233_REG_SGD_STAT_STOP (1<<2)
212	#define VIA8233_REG_SGD_STAT_ACTIVE (1<<3)
213	#define VIA8233_INTR_MASK(chan) ((VIA8233_REG_SGD_STAT_FLAG|VIA8233_REG_SGD_STAT_EOL) << ((chan) * 4))
214	#define VIA8233_REG_SGD_CHAN_SDX 0
215	#define VIA8233_REG_SGD_CHAN_MULTI 4
216	#define VIA8233_REG_SGD_CHAN_REC 6
217	#define VIA8233_REG_SGD_CHAN_REC1 7
218
219	#define VIA_REG_GPI_STATUS 0x88
220	#define VIA_REG_GPI_INTR 0x8c
221
222	/* multi-channel and capture registers for via8233 */
223	DEFINE_VIA_REGSET(MULTPLAY, 0x40);
224	DEFINE_VIA_REGSET(CAPTURE_8233, 0x60);
225
226	/* via8233-specific registers */
227	#define VIA_REG_OFS_PLAYBACK_VOLUME_L 0x02 /* byte */
228	#define VIA_REG_OFS_PLAYBACK_VOLUME_R 0x03 /* byte */
229	#define VIA_REG_OFS_MULTPLAY_FORMAT 0x02 /* byte - format and channels */
230	#define VIA_REG_MULTPLAY_FMT_8BIT 0x00
231	#define VIA_REG_MULTPLAY_FMT_16BIT 0x80
232	#define VIA_REG_MULTPLAY_FMT_CH_MASK 0x70 /* # channels << 4 (valid = 1,2,4,6) */
233	#define VIA_REG_OFS_CAPTURE_FIFO 0x02 /* byte - bit 6 = fifo enable */
234	#define VIA_REG_CAPTURE_FIFO_ENABLE 0x40
235
236	#define VIA_DXS_MAX_VOLUME 31 /* max. volume (attenuation) of reg 0x32/33 */
237
238	#define VIA_REG_CAPTURE_CHANNEL 0x63 /* byte - input select */
239	#define VIA_REG_CAPTURE_CHANNEL_MIC 0x4
240	#define VIA_REG_CAPTURE_CHANNEL_LINE 0
241	#define VIA_REG_CAPTURE_SELECT_CODEC 0x03 /* recording source codec (0 = primary) */
242
243	#define VIA_TBL_BIT_FLAG 0x40000000
244	#define VIA_TBL_BIT_EOL 0x80000000
245
246	/* pci space */
247	#define VIA_ACLINK_STAT 0x40
248	#define VIA_ACLINK_C11_READY 0x20
249	#define VIA_ACLINK_C10_READY 0x10
250	#define VIA_ACLINK_C01_READY 0x04 /* secondary codec ready */
251	#define VIA_ACLINK_LOWPOWER 0x02 /* low-power state */
252	#define VIA_ACLINK_C00_READY 0x01 /* primary codec ready */
253	#define VIA_ACLINK_CTRL 0x41
254	#define VIA_ACLINK_CTRL_ENABLE 0x80 /* 0: disable, 1: enable */
255	#define VIA_ACLINK_CTRL_RESET 0x40 /* 0: assert, 1: de-assert */
256	#define VIA_ACLINK_CTRL_SYNC 0x20 /* 0: release SYNC, 1: force SYNC hi */
257	#define VIA_ACLINK_CTRL_SDO 0x10 /* 0: release SDO, 1: force SDO hi */
258	#define VIA_ACLINK_CTRL_VRA 0x08 /* 0: disable VRA, 1: enable VRA */
259	#define VIA_ACLINK_CTRL_PCM 0x04 /* 0: disable PCM, 1: enable PCM */
260	#define VIA_ACLINK_CTRL_FM 0x02 /* via686 only */
261	#define VIA_ACLINK_CTRL_SB 0x01 /* via686 only */
262	#define VIA_ACLINK_CTRL_INIT (VIA_ACLINK_CTRL_ENABLE|\
263	VIA_ACLINK_CTRL_RESET|\
264	VIA_ACLINK_CTRL_PCM|\
265	VIA_ACLINK_CTRL_VRA)
266	#define VIA_FUNC_ENABLE 0x42
267	#define VIA_FUNC_MIDI_PNP 0x80 /* FIXME: it's 0x40 in the datasheet! */
268	#define VIA_FUNC_MIDI_IRQMASK 0x40 /* FIXME: not documented! */
269	#define VIA_FUNC_RX2C_WRITE 0x20
270	#define VIA_FUNC_SB_FIFO_EMPTY 0x10
271	#define VIA_FUNC_ENABLE_GAME 0x08
272	#define VIA_FUNC_ENABLE_FM 0x04
273	#define VIA_FUNC_ENABLE_MIDI 0x02
274	#define VIA_FUNC_ENABLE_SB 0x01
275	#define VIA_PNP_CONTROL 0x43
276	#define VIA_FM_NMI_CTRL 0x48
277	#define VIA8233_VOLCHG_CTRL 0x48
278	#define VIA8233_SPDIF_CTRL 0x49
279	#define VIA8233_SPDIF_DX3 0x08
280	#define VIA8233_SPDIF_SLOT_MASK 0x03
281	#define VIA8233_SPDIF_SLOT_1011 0x00
282	#define VIA8233_SPDIF_SLOT_34 0x01
283	#define VIA8233_SPDIF_SLOT_78 0x02
284	#define VIA8233_SPDIF_SLOT_69 0x03
285
286	/*
287	*/
288
289	#define VIA_DXS_AUTO 0
290	#define VIA_DXS_ENABLE 1
291	#define VIA_DXS_DISABLE 2
292	#define VIA_DXS_48K 3
293	#define VIA_DXS_NO_VRA 4
294	#define VIA_DXS_SRC 5
295
296
297	/*
298	* pcm stream
299	*/
300
301	struct snd_via_sg_table {
302	unsigned int offset;
303	unsigned int size;
304	} ;
305
306	#define VIA_TABLE_SIZE 255
307	#define VIA_MAX_BUFSIZE (1<<24)
308
309	struct viadev {
310	unsigned int reg_offset;
311	unsigned long port;
312	int direction; /* playback = 0, capture = 1 */
313	struct snd_pcm_substream *substream;
314	int running;
315	unsigned int tbl_entries; /* # descriptors */
316	struct snd_dma_buffer table;
317	struct snd_via_sg_table *idx_table;
318	/* for recovery from the unexpected pointer */
319	unsigned int lastpos;
320	unsigned int fragsize;
321	unsigned int bufsize;
322	unsigned int bufsize2;
323	int hwptr_done; /* processed frame position in the buffer */
324	int in_interrupt;
325	int shadow_shift;
326	};
327
328
329	enum { TYPE_CARD_VIA686 = 1, TYPE_CARD_VIA8233 };
330	enum { TYPE_VIA686, TYPE_VIA8233, TYPE_VIA8233A };
331
332	#define VIA_MAX_DEVS 7 /* 4 playback, 1 multi, 2 capture */
333
334	struct via_rate_lock {
335	spinlock_t lock;
336	int rate;
337	int used;
338	};
339
340	struct via82xx {
341	int irq;
342
343	unsigned long port;
344	struct resource *mpu_res;
345	int chip_type;
346	unsigned char revision;
347
348	unsigned char old_legacy;
349	unsigned char old_legacy_cfg;
350	#ifdef CONFIG_PM_SLEEP
351	unsigned char legacy_saved;
352	unsigned char legacy_cfg_saved;
353	unsigned char spdif_ctrl_saved;
354	unsigned char capture_src_saved[2];
355	unsigned int mpu_port_saved;
356	#endif
357
358	unsigned char playback_volume[4][2]; /* for VIA8233/C/8235; default = 0 */
359	unsigned char playback_volume_c[2]; /* for VIA8233/C/8235; default = 0 */
360
361	unsigned int intr_mask; /* SGD_SHADOW mask to check interrupts */
362
363	struct pci_dev *pci;
364	struct snd_card *card;
365
366	unsigned int num_devs;
367	unsigned int playback_devno, multi_devno, capture_devno;
368	struct viadev devs[VIA_MAX_DEVS];
369	struct via_rate_lock rates[2]; /* playback and capture */
370	unsigned int dxs_fixed: 1; /* DXS channel accepts only 48kHz */
371	unsigned int no_vra: 1; /* no need to set VRA on DXS channels */
372	unsigned int dxs_src: 1; /* use full SRC capabilities of DXS */
373	unsigned int spdif_on: 1; /* only spdif rates work to external DACs */
374
375	struct snd_pcm *pcms[2];
376	struct snd_rawmidi *rmidi;
377	struct snd_kcontrol *dxs_controls[4];
378
379	struct snd_ac97_bus *ac97_bus;
380	struct snd_ac97 *ac97;
381	unsigned int ac97_clock;
382	unsigned int ac97_secondary; /* secondary AC'97 codec is present */
383
384	spinlock_t reg_lock;
385	struct snd_info_entry *proc_entry;
386
387	#ifdef SUPPORT_JOYSTICK
388	struct gameport *gameport;
389	#endif
390	};
391
392	static const struct pci_device_id snd_via82xx_ids[] = {
393	/* 0x1106, 0x3058 */
394	{ PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_82C686_5), TYPE_CARD_VIA686, }, /* 686A */
395	/* 0x1106, 0x3059 */
396	{ PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_8233_5), TYPE_CARD_VIA8233, }, /* VT8233 */
397	{ 0, }
398	};
399
400	MODULE_DEVICE_TABLE(pci, snd_via82xx_ids);
401
402	/*
403	*/
404
405	/*
406	* allocate and initialize the descriptor buffers
407	* periods = number of periods
408	* fragsize = period size in bytes
409	*/
410	static int build_via_table(struct viadev *dev, struct snd_pcm_substream *substream,
411	struct pci_dev *pci,
412	unsigned int periods, unsigned int fragsize)
413	{
414	unsigned int i, idx, ofs, rest;
415	struct via82xx *chip = snd_pcm_substream_chip(substream);
416	__le32 *pgtbl;
417
418	if (dev->table.area == NULL) {
419	/* the start of each lists must be aligned to 8 bytes,
420	* but the kernel pages are much bigger, so we don't care
421	*/
422	if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, dev: &chip->pci->dev,
423	PAGE_ALIGN(VIA_TABLE_SIZE * 2 * 8),
424	dmab: &dev->table) < 0)
425	return -ENOMEM;
426	}
427	if (! dev->idx_table) {
428	dev->idx_table = kmalloc_array(VIA_TABLE_SIZE,
429	size: sizeof(*dev->idx_table),
430	GFP_KERNEL);
431	if (! dev->idx_table)
432	return -ENOMEM;
433	}
434
435	/* fill the entries */
436	idx = 0;
437	ofs = 0;
438	pgtbl = (__le32 *)dev->table.area;
439	for (i = 0; i < periods; i++) {
440	rest = fragsize;
441	/* fill descriptors for a period.
442	* a period can be split to several descriptors if it's
443	* over page boundary.
444	*/
445	do {
446	unsigned int r;
447	unsigned int flag;
448	unsigned int addr;
449
450	if (idx >= VIA_TABLE_SIZE) {
451	dev_err(&pci->dev, "too much table size!\n");
452	return -EINVAL;
453	}
454	addr = snd_pcm_sgbuf_get_addr(substream, ofs);
455	pgtbl[idx << 1] = cpu_to_le32(addr);
456	r = snd_pcm_sgbuf_get_chunk_size(substream, ofs, size: rest);
457	rest -= r;
458	if (! rest) {
459	if (i == periods - 1)
460	flag = VIA_TBL_BIT_EOL; /* buffer boundary */
461	else
462	flag = VIA_TBL_BIT_FLAG; /* period boundary */
463	} else
464	flag = 0; /* period continues to the next */
465	/*
466	dev_dbg(&pci->dev,
467	"tbl %d: at %d size %d (rest %d)\n",
468	idx, ofs, r, rest);
469	*/
470	pgtbl[(idx<<1) + 1] = cpu_to_le32(r | flag);
471	dev->idx_table[idx].offset = ofs;
472	dev->idx_table[idx].size = r;
473	ofs += r;
474	idx++;
475	} while (rest > 0);
476	}
477	dev->tbl_entries = idx;
478	dev->bufsize = periods * fragsize;
479	dev->bufsize2 = dev->bufsize / 2;
480	dev->fragsize = fragsize;
481	return 0;
482	}
483
484
485	static int clean_via_table(struct viadev *dev, struct snd_pcm_substream *substream,
486	struct pci_dev *pci)
487	{
488	if (dev->table.area) {
489	snd_dma_free_pages(dmab: &dev->table);
490	dev->table.area = NULL;
491	}
492	kfree(objp: dev->idx_table);
493	dev->idx_table = NULL;
494	return 0;
495	}
496
497	/*
498	* Basic I/O
499	*/
500
501	static inline unsigned int snd_via82xx_codec_xread(struct via82xx *chip)
502	{
503	return inl(VIAREG(chip, AC97));
504	}
505
506	static inline void snd_via82xx_codec_xwrite(struct via82xx *chip, unsigned int val)
507	{
508	outl(value: val, VIAREG(chip, AC97));
509	}
510
511	static int snd_via82xx_codec_ready(struct via82xx *chip, int secondary)
512	{
513	unsigned int timeout = 1000; /* 1ms */
514	unsigned int val;
515
516	while (timeout-- > 0) {
517	udelay(1);
518	val = snd_via82xx_codec_xread(chip);
519	if (!(val & VIA_REG_AC97_BUSY))
520	return val & 0xffff;
521	}
522	dev_err(chip->card->dev, "codec_ready: codec %i is not ready [0x%x]\n",
523	secondary, snd_via82xx_codec_xread(chip));
524	return -EIO;
525	}
526
527	static int snd_via82xx_codec_valid(struct via82xx *chip, int secondary)
528	{
529	unsigned int timeout = 1000; /* 1ms */
530	unsigned int val, val1;
531	unsigned int stat = !secondary ? VIA_REG_AC97_PRIMARY_VALID :
532	VIA_REG_AC97_SECONDARY_VALID;
533
534	while (timeout-- > 0) {
535	val = snd_via82xx_codec_xread(chip);
536	val1 = val & (VIA_REG_AC97_BUSY | stat);
537	if (val1 == stat)
538	return val & 0xffff;
539	udelay(1);
540	}
541	return -EIO;
542	}
543
544	static void snd_via82xx_codec_wait(struct snd_ac97 *ac97)
545	{
546	struct via82xx *chip = ac97->private_data;
547	__always_unused int err;
548	err = snd_via82xx_codec_ready(chip, secondary: ac97->num);
549	/* here we need to wait fairly for long time.. */
550	if (!nodelay)
551	msleep(msecs: 500);
552	}
553
554	static void snd_via82xx_codec_write(struct snd_ac97 *ac97,
555	unsigned short reg,
556	unsigned short val)
557	{
558	struct via82xx *chip = ac97->private_data;
559	unsigned int xval;
560
561	xval = !ac97->num ? VIA_REG_AC97_CODEC_ID_PRIMARY : VIA_REG_AC97_CODEC_ID_SECONDARY;
562	xval <<= VIA_REG_AC97_CODEC_ID_SHIFT;
563	xval |= reg << VIA_REG_AC97_CMD_SHIFT;
564	xval |= val << VIA_REG_AC97_DATA_SHIFT;
565	snd_via82xx_codec_xwrite(chip, val: xval);
566	snd_via82xx_codec_ready(chip, secondary: ac97->num);
567	}
568
569	static unsigned short snd_via82xx_codec_read(struct snd_ac97 *ac97, unsigned short reg)
570	{
571	struct via82xx *chip = ac97->private_data;
572	unsigned int xval, val = 0xffff;
573	int again = 0;
574
575	xval = ac97->num << VIA_REG_AC97_CODEC_ID_SHIFT;
576	xval |= ac97->num ? VIA_REG_AC97_SECONDARY_VALID : VIA_REG_AC97_PRIMARY_VALID;
577	xval |= VIA_REG_AC97_READ;
578	xval |= (reg & 0x7f) << VIA_REG_AC97_CMD_SHIFT;
579	while (1) {
580	if (again++ > 3) {
581	dev_err(chip->card->dev,
582	"codec_read: codec %i is not valid [0x%x]\n",
583	ac97->num, snd_via82xx_codec_xread(chip));
584	return 0xffff;
585	}
586	snd_via82xx_codec_xwrite(chip, val: xval);
587	udelay (20);
588	if (snd_via82xx_codec_valid(chip, secondary: ac97->num) >= 0) {
589	udelay(25);
590	val = snd_via82xx_codec_xread(chip);
591	break;
592	}
593	}
594	return val & 0xffff;
595	}
596
597	static void snd_via82xx_channel_reset(struct via82xx *chip, struct viadev *viadev)
598	{
599	outb(VIA_REG_CTRL_PAUSE | VIA_REG_CTRL_TERMINATE | VIA_REG_CTRL_RESET,
600	VIADEV_REG(viadev, OFFSET_CONTROL));
601	inb(VIADEV_REG(viadev, OFFSET_CONTROL));
602	udelay(50);
603	/* disable interrupts */
604	outb(value: 0x00, VIADEV_REG(viadev, OFFSET_CONTROL));
605	/* clear interrupts */
606	outb(value: 0x03, VIADEV_REG(viadev, OFFSET_STATUS));
607	outb(value: 0x00, VIADEV_REG(viadev, OFFSET_TYPE)); /* for via686 */
608	// outl(0, VIADEV_REG(viadev, OFFSET_CURR_PTR));
609	viadev->lastpos = 0;
610	viadev->hwptr_done = 0;
611	}
612
613
614	/*
615	* Interrupt handler
616	* Used for 686 and 8233A
617	*/
618	static irqreturn_t snd_via686_interrupt(int irq, void *dev_id)
619	{
620	struct via82xx *chip = dev_id;
621	unsigned int status;
622	unsigned int i;
623
624	status = inl(VIAREG(chip, SGD_SHADOW));
625	if (! (status & chip->intr_mask)) {
626	if (chip->rmidi)
627	/* check mpu401 interrupt */
628	return snd_mpu401_uart_interrupt(irq, dev_id: chip->rmidi->private_data);
629	return IRQ_NONE;
630	}
631
632	/* check status for each stream */
633	spin_lock(lock: &chip->reg_lock);
634	for (i = 0; i < chip->num_devs; i++) {
635	struct viadev *viadev = &chip->devs[i];
636	unsigned char c_status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
637	if (! (c_status & (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG|VIA_REG_STAT_STOPPED)))
638	continue;
639	if (viadev->substream && viadev->running) {
640	/*
641	* Update hwptr_done based on 'period elapsed'
642	* interrupts. We'll use it, when the chip returns 0
643	* for OFFSET_CURR_COUNT.
644	*/
645	if (c_status & VIA_REG_STAT_EOL)
646	viadev->hwptr_done = 0;
647	else
648	viadev->hwptr_done += viadev->fragsize;
649	viadev->in_interrupt = c_status;
650	spin_unlock(lock: &chip->reg_lock);
651	snd_pcm_period_elapsed(substream: viadev->substream);
652	spin_lock(lock: &chip->reg_lock);
653	viadev->in_interrupt = 0;
654	}
655	outb(value: c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */
656	}
657	spin_unlock(lock: &chip->reg_lock);
658	return IRQ_HANDLED;
659	}
660
661	/*
662	* Interrupt handler
663	*/
664	static irqreturn_t snd_via8233_interrupt(int irq, void *dev_id)
665	{
666	struct via82xx *chip = dev_id;
667	unsigned int status;
668	unsigned int i;
669	int irqreturn = 0;
670
671	/* check status for each stream */
672	spin_lock(lock: &chip->reg_lock);
673	status = inl(VIAREG(chip, SGD_SHADOW));
674
675	for (i = 0; i < chip->num_devs; i++) {
676	struct viadev *viadev = &chip->devs[i];
677	struct snd_pcm_substream *substream;
678	unsigned char c_status, shadow_status;
679
680	shadow_status = (status >> viadev->shadow_shift) &
681	(VIA8233_SHADOW_STAT_ACTIVE|VIA_REG_STAT_EOL|
682	VIA_REG_STAT_FLAG);
683	c_status = shadow_status & (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG);
684	if (!c_status)
685	continue;
686
687	substream = viadev->substream;
688	if (substream && viadev->running) {
689	/*
690	* Update hwptr_done based on 'period elapsed'
691	* interrupts. We'll use it, when the chip returns 0
692	* for OFFSET_CURR_COUNT.
693	*/
694	if (c_status & VIA_REG_STAT_EOL)
695	viadev->hwptr_done = 0;
696	else
697	viadev->hwptr_done += viadev->fragsize;
698	viadev->in_interrupt = c_status;
699	if (shadow_status & VIA8233_SHADOW_STAT_ACTIVE)
700	viadev->in_interrupt |= VIA_REG_STAT_ACTIVE;
701	spin_unlock(lock: &chip->reg_lock);
702
703	snd_pcm_period_elapsed(substream);
704
705	spin_lock(lock: &chip->reg_lock);
706	viadev->in_interrupt = 0;
707	}
708	outb(value: c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */
709	irqreturn = 1;
710	}
711	spin_unlock(lock: &chip->reg_lock);
712	return IRQ_RETVAL(irqreturn);
713	}
714
715	/*
716	* PCM callbacks
717	*/
718
719	/*
720	* trigger callback
721	*/
722	static int snd_via82xx_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
723	{
724	struct via82xx *chip = snd_pcm_substream_chip(substream);
725	struct viadev *viadev = substream->runtime->private_data;
726	unsigned char val;
727
728	if (chip->chip_type != TYPE_VIA686)
729	val = VIA_REG_CTRL_INT;
730	else
731	val = 0;
732	switch (cmd) {
733	case SNDRV_PCM_TRIGGER_START:
734	case SNDRV_PCM_TRIGGER_RESUME:
735	val |= VIA_REG_CTRL_START;
736	viadev->running = 1;
737	break;
738	case SNDRV_PCM_TRIGGER_STOP:
739	case SNDRV_PCM_TRIGGER_SUSPEND:
740	val = VIA_REG_CTRL_TERMINATE;
741	viadev->running = 0;
742	break;
743	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
744	val |= VIA_REG_CTRL_PAUSE;
745	viadev->running = 0;
746	break;
747	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
748	viadev->running = 1;
749	break;
750	default:
751	return -EINVAL;
752	}
753	outb(value: val, VIADEV_REG(viadev, OFFSET_CONTROL));
754	if (cmd == SNDRV_PCM_TRIGGER_STOP)
755	snd_via82xx_channel_reset(chip, viadev);
756	return 0;
757	}
758
759
760	/*
761	* pointer callbacks
762	*/
763
764	/*
765	* calculate the linear position at the given sg-buffer index and the rest count
766	*/
767
768	#define check_invalid_pos(viadev,pos) \
769	((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 ||\
770	viadev->lastpos < viadev->bufsize2))
771
772	static inline unsigned int calc_linear_pos(struct via82xx *chip,
773	struct viadev *viadev,
774	unsigned int idx,
775	unsigned int count)
776	{
777	unsigned int size, base, res;
778
779	size = viadev->idx_table[idx].size;
780	base = viadev->idx_table[idx].offset;
781	res = base + size - count;
782	if (res >= viadev->bufsize)
783	res -= viadev->bufsize;
784
785	/* check the validity of the calculated position */
786	if (size < count) {
787	dev_dbg(chip->card->dev,
788	"invalid via82xx_cur_ptr (size = %d, count = %d)\n",
789	(int)size, (int)count);
790	res = viadev->lastpos;
791	} else {
792	if (! count) {
793	/* Some mobos report count = 0 on the DMA boundary,
794	* i.e. count = size indeed.
795	* Let's check whether this step is above the expected size.
796	*/
797	int delta = res - viadev->lastpos;
798	if (delta < 0)
799	delta += viadev->bufsize;
800	if ((unsigned int)delta > viadev->fragsize)
801	res = base;
802	}
803	if (check_invalid_pos(viadev, res)) {
804	#ifdef POINTER_DEBUG
805	dev_dbg(chip->card->dev,
806	"fail: idx = %i/%i, lastpos = 0x%x, bufsize2 = 0x%x, offsize = 0x%x, size = 0x%x, count = 0x%x\n",
807	idx, viadev->tbl_entries,
808	viadev->lastpos, viadev->bufsize2,
809	viadev->idx_table[idx].offset,
810	viadev->idx_table[idx].size, count);
811	#endif
812	/* count register returns full size when end of buffer is reached */
813	res = base + size;
814	if (check_invalid_pos(viadev, res)) {
815	dev_dbg(chip->card->dev,
816	"invalid via82xx_cur_ptr (2), using last valid pointer\n");
817	res = viadev->lastpos;
818	}
819	}
820	}
821	return res;
822	}
823
824	/*
825	* get the current pointer on via686
826	*/
827	static snd_pcm_uframes_t snd_via686_pcm_pointer(struct snd_pcm_substream *substream)
828	{
829	struct via82xx *chip = snd_pcm_substream_chip(substream);
830	struct viadev *viadev = substream->runtime->private_data;
831	unsigned int idx, ptr, count, res;
832
833	if (snd_BUG_ON(!viadev->tbl_entries))
834	return 0;
835	if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE))
836	return 0;
837
838	spin_lock(lock: &chip->reg_lock);
839	count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff;
840	/* The via686a does not have the current index register,
841	* so we need to calculate the index from CURR_PTR.
842	*/
843	ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR));
844	if (ptr <= (unsigned int)viadev->table.addr)
845	idx = 0;
846	else /* CURR_PTR holds the address + 8 */
847	idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) % viadev->tbl_entries;
848	res = calc_linear_pos(chip, viadev, idx, count);
849	viadev->lastpos = res; /* remember the last position */
850	spin_unlock(lock: &chip->reg_lock);
851
852	return bytes_to_frames(runtime: substream->runtime, size: res);
853	}
854
855	/*
856	* get the current pointer on via823x
857	*/
858	static snd_pcm_uframes_t snd_via8233_pcm_pointer(struct snd_pcm_substream *substream)
859	{
860	struct via82xx *chip = snd_pcm_substream_chip(substream);
861	struct viadev *viadev = substream->runtime->private_data;
862	unsigned int idx, count, res;
863	int status;
864
865	if (snd_BUG_ON(!viadev->tbl_entries))
866	return 0;
867
868	spin_lock(lock: &chip->reg_lock);
869	count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT));
870	status = viadev->in_interrupt;
871	if (!status)
872	status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
873
874	/* An apparent bug in the 8251 is worked around by sending a
875	* REG_CTRL_START. */
876	if (chip->revision == VIA_REV_8251 && (status & VIA_REG_STAT_EOL))
877	snd_via82xx_pcm_trigger(substream, SNDRV_PCM_TRIGGER_START);
878
879	if (!(status & VIA_REG_STAT_ACTIVE)) {
880	res = 0;
881	goto unlock;
882	}
883	if (count & 0xffffff) {
884	idx = count >> 24;
885	if (idx >= viadev->tbl_entries) {
886	#ifdef POINTER_DEBUG
887	dev_dbg(chip->card->dev,
888	"fail: invalid idx = %i/%i\n", idx,
889	viadev->tbl_entries);
890	#endif
891	res = viadev->lastpos;
892	} else {
893	count &= 0xffffff;
894	res = calc_linear_pos(chip, viadev, idx, count);
895	}
896	} else {
897	res = viadev->hwptr_done;
898	if (!viadev->in_interrupt) {
899	if (status & VIA_REG_STAT_EOL) {
900	res = 0;
901	} else
902	if (status & VIA_REG_STAT_FLAG) {
903	res += viadev->fragsize;
904	}
905	}
906	}
907	unlock:
908	viadev->lastpos = res;
909	spin_unlock(lock: &chip->reg_lock);
910
911	return bytes_to_frames(runtime: substream->runtime, size: res);
912	}
913
914
915	/*
916	* hw_params callback:
917	* allocate the buffer and build up the buffer description table
918	*/
919	static int snd_via82xx_hw_params(struct snd_pcm_substream *substream,
920	struct snd_pcm_hw_params *hw_params)
921	{
922	struct via82xx *chip = snd_pcm_substream_chip(substream);
923	struct viadev *viadev = substream->runtime->private_data;
924
925	return build_via_table(dev: viadev, substream, pci: chip->pci,
926	periods: params_periods(p: hw_params),
927	fragsize: params_period_bytes(p: hw_params));
928	}
929
930	/*
931	* hw_free callback:
932	* clean up the buffer description table and release the buffer
933	*/
934	static int snd_via82xx_hw_free(struct snd_pcm_substream *substream)
935	{
936	struct via82xx *chip = snd_pcm_substream_chip(substream);
937	struct viadev *viadev = substream->runtime->private_data;
938
939	clean_via_table(dev: viadev, substream, pci: chip->pci);
940	return 0;
941	}
942
943
944	/*
945	* set up the table pointer
946	*/
947	static void snd_via82xx_set_table_ptr(struct via82xx *chip, struct viadev *viadev)
948	{
949	snd_via82xx_codec_ready(chip, secondary: 0);
950	outl(value: (u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR));
951	udelay(20);
952	snd_via82xx_codec_ready(chip, secondary: 0);
953	}
954
955	/*
956	* prepare callback for playback and capture on via686
957	*/
958	static void via686_setup_format(struct via82xx *chip, struct viadev *viadev,
959	struct snd_pcm_runtime *runtime)
960	{
961	snd_via82xx_channel_reset(chip, viadev);
962	/* this must be set after channel_reset */
963	snd_via82xx_set_table_ptr(chip, viadev);
964	outb(VIA_REG_TYPE_AUTOSTART |
965	(runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA_REG_TYPE_16BIT : 0) |
966	(runtime->channels > 1 ? VIA_REG_TYPE_STEREO : 0) |
967	((viadev->reg_offset & 0x10) == 0 ? VIA_REG_TYPE_INT_LSAMPLE : 0) |
968	VIA_REG_TYPE_INT_EOL |
969	VIA_REG_TYPE_INT_FLAG, VIADEV_REG(viadev, OFFSET_TYPE));
970	}
971
972	static int snd_via686_playback_prepare(struct snd_pcm_substream *substream)
973	{
974	struct via82xx *chip = snd_pcm_substream_chip(substream);
975	struct viadev *viadev = substream->runtime->private_data;
976	struct snd_pcm_runtime *runtime = substream->runtime;
977
978	snd_ac97_set_rate(ac97: chip->ac97, AC97_PCM_FRONT_DAC_RATE, rate: runtime->rate);
979	snd_ac97_set_rate(ac97: chip->ac97, AC97_SPDIF, rate: runtime->rate);
980	via686_setup_format(chip, viadev, runtime);
981	return 0;
982	}
983
984	static int snd_via686_capture_prepare(struct snd_pcm_substream *substream)
985	{
986	struct via82xx *chip = snd_pcm_substream_chip(substream);
987	struct viadev *viadev = substream->runtime->private_data;
988	struct snd_pcm_runtime *runtime = substream->runtime;
989
990	snd_ac97_set_rate(ac97: chip->ac97, AC97_PCM_LR_ADC_RATE, rate: runtime->rate);
991	via686_setup_format(chip, viadev, runtime);
992	return 0;
993	}
994
995	/*
996	* lock the current rate
997	*/
998	static int via_lock_rate(struct via_rate_lock *rec, int rate)
999	{
1000	int changed = 0;
1001
1002	spin_lock_irq(lock: &rec->lock);
1003	if (rec->rate != rate) {
1004	if (rec->rate && rec->used > 1) /* already set */
1005	changed = -EINVAL;
1006	else {
1007	rec->rate = rate;
1008	changed = 1;
1009	}
1010	}
1011	spin_unlock_irq(lock: &rec->lock);
1012	return changed;
1013	}
1014
1015	/*
1016	* prepare callback for DSX playback on via823x
1017	*/
1018	static int snd_via8233_playback_prepare(struct snd_pcm_substream *substream)
1019	{
1020	struct via82xx *chip = snd_pcm_substream_chip(substream);
1021	struct viadev *viadev = substream->runtime->private_data;
1022	struct snd_pcm_runtime *runtime = substream->runtime;
1023	int ac97_rate = chip->dxs_src ? 48000 : runtime->rate;
1024	int rate_changed;
1025	u32 rbits;
1026
1027	rate_changed = via_lock_rate(rec: &chip->rates[0], rate: ac97_rate);
1028	if (rate_changed < 0)
1029	return rate_changed;
1030	if (rate_changed)
1031	snd_ac97_set_rate(ac97: chip->ac97, AC97_PCM_FRONT_DAC_RATE,
1032	rate: chip->no_vra ? 48000 : runtime->rate);
1033	if (chip->spdif_on && viadev->reg_offset == 0x30)
1034	snd_ac97_set_rate(ac97: chip->ac97, AC97_SPDIF, rate: runtime->rate);
1035
1036	if (runtime->rate == 48000)
1037	rbits = 0xfffff;
1038	else
1039	rbits = (0x100000 / 48000) * runtime->rate +
1040	((0x100000 % 48000) * runtime->rate) / 48000;
1041	snd_BUG_ON(rbits & ~0xfffff);
1042	snd_via82xx_channel_reset(chip, viadev);
1043	snd_via82xx_set_table_ptr(chip, viadev);
1044	outb(value: chip->playback_volume[viadev->reg_offset / 0x10][0],
1045	VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_L));
1046	outb(value: chip->playback_volume[viadev->reg_offset / 0x10][1],
1047	VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_R));
1048	outl(value: (runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) | /* format */
1049	(runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) | /* stereo */
1050	rbits | /* rate */
1051	0xff000000, /* STOP index is never reached */
1052	VIADEV_REG(viadev, OFFSET_STOP_IDX));
1053	udelay(20);
1054	snd_via82xx_codec_ready(chip, secondary: 0);
1055	return 0;
1056	}
1057
1058	/*
1059	* prepare callback for multi-channel playback on via823x
1060	*/
1061	static int snd_via8233_multi_prepare(struct snd_pcm_substream *substream)
1062	{
1063	struct via82xx *chip = snd_pcm_substream_chip(substream);
1064	struct viadev *viadev = substream->runtime->private_data;
1065	struct snd_pcm_runtime *runtime = substream->runtime;
1066	unsigned int slots;
1067	int fmt;
1068
1069	if (via_lock_rate(rec: &chip->rates[0], rate: runtime->rate) < 0)
1070	return -EINVAL;
1071	snd_ac97_set_rate(ac97: chip->ac97, AC97_PCM_FRONT_DAC_RATE, rate: runtime->rate);
1072	snd_ac97_set_rate(ac97: chip->ac97, AC97_PCM_SURR_DAC_RATE, rate: runtime->rate);
1073	snd_ac97_set_rate(ac97: chip->ac97, AC97_PCM_LFE_DAC_RATE, rate: runtime->rate);
1074	snd_ac97_set_rate(ac97: chip->ac97, AC97_SPDIF, rate: runtime->rate);
1075	snd_via82xx_channel_reset(chip, viadev);
1076	snd_via82xx_set_table_ptr(chip, viadev);
1077
1078	fmt = (runtime->format == SNDRV_PCM_FORMAT_S16_LE) ?
1079	VIA_REG_MULTPLAY_FMT_16BIT : VIA_REG_MULTPLAY_FMT_8BIT;
1080	fmt |= runtime->channels << 4;
1081	outb(value: fmt, VIADEV_REG(viadev, OFS_MULTPLAY_FORMAT));
1082	#if 0
1083	if (chip->revision == VIA_REV_8233A)
1084	slots = 0;
1085	else
1086	#endif
1087	{
1088	/* set sample number to slot 3, 4, 7, 8, 6, 9 (for VIA8233/C,8235) */
1089	/* corresponding to FL, FR, RL, RR, C, LFE ?? */
1090	switch (runtime->channels) {
1091	case 1: slots = (1<<0) | (1<<4); break;
1092	case 2: slots = (1<<0) | (2<<4); break;
1093	case 3: slots = (1<<0) | (2<<4) | (5<<8); break;
1094	case 4: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12); break;
1095	case 5: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16); break;
1096	case 6: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16) | (6<<20); break;
1097	default: slots = 0; break;
1098	}
1099	}
1100	/* STOP index is never reached */
1101	outl(value: 0xff000000 | slots, VIADEV_REG(viadev, OFFSET_STOP_IDX));
1102	udelay(20);
1103	snd_via82xx_codec_ready(chip, secondary: 0);
1104	return 0;
1105	}
1106
1107	/*
1108	* prepare callback for capture on via823x
1109	*/
1110	static int snd_via8233_capture_prepare(struct snd_pcm_substream *substream)
1111	{
1112	struct via82xx *chip = snd_pcm_substream_chip(substream);
1113	struct viadev *viadev = substream->runtime->private_data;
1114	struct snd_pcm_runtime *runtime = substream->runtime;
1115
1116	if (via_lock_rate(rec: &chip->rates[1], rate: runtime->rate) < 0)
1117	return -EINVAL;
1118	snd_ac97_set_rate(ac97: chip->ac97, AC97_PCM_LR_ADC_RATE, rate: runtime->rate);
1119	snd_via82xx_channel_reset(chip, viadev);
1120	snd_via82xx_set_table_ptr(chip, viadev);
1121	outb(VIA_REG_CAPTURE_FIFO_ENABLE, VIADEV_REG(viadev, OFS_CAPTURE_FIFO));
1122	outl(value: (runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) |
1123	(runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) |
1124	0xff000000, /* STOP index is never reached */
1125	VIADEV_REG(viadev, OFFSET_STOP_IDX));
1126	udelay(20);
1127	snd_via82xx_codec_ready(chip, secondary: 0);
1128	return 0;
1129	}
1130
1131
1132	/*
1133	* pcm hardware definition, identical for both playback and capture
1134	*/
1135	static const struct snd_pcm_hardware snd_via82xx_hw =
1136	{
1137	.info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1138	SNDRV_PCM_INFO_BLOCK_TRANSFER |
1139	SNDRV_PCM_INFO_MMAP_VALID |
1140	/* SNDRV_PCM_INFO_RESUME | */
1141	SNDRV_PCM_INFO_PAUSE),
1142	.formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
1143	.rates = SNDRV_PCM_RATE_48000,
1144	.rate_min = 48000,
1145	.rate_max = 48000,
1146	.channels_min = 1,
1147	.channels_max = 2,
1148	.buffer_bytes_max = VIA_MAX_BUFSIZE,
1149	.period_bytes_min = 32,
1150	.period_bytes_max = VIA_MAX_BUFSIZE / 2,
1151	.periods_min = 2,
1152	.periods_max = VIA_TABLE_SIZE / 2,
1153	.fifo_size = 0,
1154	};
1155
1156
1157	/*
1158	* open callback skeleton
1159	*/
1160	static int snd_via82xx_pcm_open(struct via82xx *chip, struct viadev *viadev,
1161	struct snd_pcm_substream *substream)
1162	{
1163	struct snd_pcm_runtime *runtime = substream->runtime;
1164	int err;
1165	struct via_rate_lock *ratep;
1166	bool use_src = false;
1167
1168	runtime->hw = snd_via82xx_hw;
1169
1170	/* set the hw rate condition */
1171	ratep = &chip->rates[viadev->direction];
1172	spin_lock_irq(lock: &ratep->lock);
1173	ratep->used++;
1174	if (chip->spdif_on && viadev->reg_offset == 0x30) {
1175	/* DXS#3 and spdif is on */
1176	runtime->hw.rates = chip->ac97->rates[AC97_RATES_SPDIF];
1177	snd_pcm_limit_hw_rates(runtime);
1178	} else if (chip->dxs_fixed && viadev->reg_offset < 0x40) {
1179	/* fixed DXS playback rate */
1180	runtime->hw.rates = SNDRV_PCM_RATE_48000;
1181	runtime->hw.rate_min = runtime->hw.rate_max = 48000;
1182	} else if (chip->dxs_src && viadev->reg_offset < 0x40) {
1183	/* use full SRC capabilities of DXS */
1184	runtime->hw.rates = (SNDRV_PCM_RATE_CONTINUOUS |
1185	SNDRV_PCM_RATE_8000_48000);
1186	runtime->hw.rate_min = 8000;
1187	runtime->hw.rate_max = 48000;
1188	use_src = true;
1189	} else if (! ratep->rate) {
1190	int idx = viadev->direction ? AC97_RATES_ADC : AC97_RATES_FRONT_DAC;
1191	runtime->hw.rates = chip->ac97->rates[idx];
1192	snd_pcm_limit_hw_rates(runtime);
1193	} else {
1194	/* a fixed rate */
1195	runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
1196	runtime->hw.rate_max = runtime->hw.rate_min = ratep->rate;
1197	}
1198	spin_unlock_irq(lock: &ratep->lock);
1199
1200	/* we may remove following constaint when we modify table entries
1201	in interrupt */
1202	err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
1203	if (err < 0)
1204	return err;
1205
1206	if (use_src) {
1207	err = snd_pcm_hw_rule_noresample(runtime, base_rate: 48000);
1208	if (err < 0)
1209	return err;
1210	}
1211
1212	runtime->private_data = viadev;
1213	viadev->substream = substream;
1214
1215	return 0;
1216	}
1217
1218
1219	/*
1220	* open callback for playback on via686
1221	*/
1222	static int snd_via686_playback_open(struct snd_pcm_substream *substream)
1223	{
1224	struct via82xx *chip = snd_pcm_substream_chip(substream);
1225	struct viadev *viadev = &chip->devs[chip->playback_devno + substream->number];
1226	int err;
1227
1228	err = snd_via82xx_pcm_open(chip, viadev, substream);
1229	if (err < 0)
1230	return err;
1231	return 0;
1232	}
1233
1234	/*
1235	* open callback for playback on via823x DXS
1236	*/
1237	static int snd_via8233_playback_open(struct snd_pcm_substream *substream)
1238	{
1239	struct via82xx *chip = snd_pcm_substream_chip(substream);
1240	struct viadev *viadev;
1241	unsigned int stream;
1242	int err;
1243
1244	viadev = &chip->devs[chip->playback_devno + substream->number];
1245	err = snd_via82xx_pcm_open(chip, viadev, substream);
1246	if (err < 0)
1247	return err;
1248	stream = viadev->reg_offset / 0x10;
1249	if (chip->dxs_controls[stream]) {
1250	chip->playback_volume[stream][0] =
1251	VIA_DXS_MAX_VOLUME - (dxs_init_volume & 31);
1252	chip->playback_volume[stream][1] =
1253	VIA_DXS_MAX_VOLUME - (dxs_init_volume & 31);
1254	chip->dxs_controls[stream]->vd[0].access &=
1255	~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
1256	snd_ctl_notify(card: chip->card, SNDRV_CTL_EVENT_MASK_VALUE |
1257	SNDRV_CTL_EVENT_MASK_INFO,
1258	id: &chip->dxs_controls[stream]->id);
1259	}
1260	return 0;
1261	}
1262
1263	/*
1264	* open callback for playback on via823x multi-channel
1265	*/
1266	static int snd_via8233_multi_open(struct snd_pcm_substream *substream)
1267	{
1268	struct via82xx *chip = snd_pcm_substream_chip(substream);
1269	struct viadev *viadev = &chip->devs[chip->multi_devno];
1270	int err;
1271	/* channels constraint for VIA8233A
1272	* 3 and 5 channels are not supported
1273	*/
1274	static const unsigned int channels[] = {
1275	1, 2, 4, 6
1276	};
1277	static const struct snd_pcm_hw_constraint_list hw_constraints_channels = {
1278	.count = ARRAY_SIZE(channels),
1279	.list = channels,
1280	.mask = 0,
1281	};
1282
1283	err = snd_via82xx_pcm_open(chip, viadev, substream);
1284	if (err < 0)
1285	return err;
1286	substream->runtime->hw.channels_max = 6;
1287	if (chip->revision == VIA_REV_8233A)
1288	snd_pcm_hw_constraint_list(runtime: substream->runtime, cond: 0,
1289	SNDRV_PCM_HW_PARAM_CHANNELS,
1290	l: &hw_constraints_channels);
1291	return 0;
1292	}
1293
1294	/*
1295	* open callback for capture on via686 and via823x
1296	*/
1297	static int snd_via82xx_capture_open(struct snd_pcm_substream *substream)
1298	{
1299	struct via82xx *chip = snd_pcm_substream_chip(substream);
1300	struct viadev *viadev = &chip->devs[chip->capture_devno + substream->pcm->device];
1301
1302	return snd_via82xx_pcm_open(chip, viadev, substream);
1303	}
1304
1305	/*
1306	* close callback
1307	*/
1308	static int snd_via82xx_pcm_close(struct snd_pcm_substream *substream)
1309	{
1310	struct via82xx *chip = snd_pcm_substream_chip(substream);
1311	struct viadev *viadev = substream->runtime->private_data;
1312	struct via_rate_lock *ratep;
1313
1314	/* release the rate lock */
1315	ratep = &chip->rates[viadev->direction];
1316	spin_lock_irq(lock: &ratep->lock);
1317	ratep->used--;
1318	if (! ratep->used)
1319	ratep->rate = 0;
1320	spin_unlock_irq(lock: &ratep->lock);
1321	if (! ratep->rate) {
1322	if (! viadev->direction) {
1323	snd_ac97_update_power(ac97: chip->ac97,
1324	AC97_PCM_FRONT_DAC_RATE, powerup: 0);
1325	snd_ac97_update_power(ac97: chip->ac97,
1326	AC97_PCM_SURR_DAC_RATE, powerup: 0);
1327	snd_ac97_update_power(ac97: chip->ac97,
1328	AC97_PCM_LFE_DAC_RATE, powerup: 0);
1329	} else
1330	snd_ac97_update_power(ac97: chip->ac97,
1331	AC97_PCM_LR_ADC_RATE, powerup: 0);
1332	}
1333	viadev->substream = NULL;
1334	return 0;
1335	}
1336
1337	static int snd_via8233_playback_close(struct snd_pcm_substream *substream)
1338	{
1339	struct via82xx *chip = snd_pcm_substream_chip(substream);
1340	struct viadev *viadev = substream->runtime->private_data;
1341	unsigned int stream;
1342
1343	stream = viadev->reg_offset / 0x10;
1344	if (chip->dxs_controls[stream]) {
1345	chip->dxs_controls[stream]->vd[0].access |=
1346	SNDRV_CTL_ELEM_ACCESS_INACTIVE;
1347	snd_ctl_notify(card: chip->card, SNDRV_CTL_EVENT_MASK_INFO,
1348	id: &chip->dxs_controls[stream]->id);
1349	}
1350	return snd_via82xx_pcm_close(substream);
1351	}
1352
1353
1354	/* via686 playback callbacks */
1355	static const struct snd_pcm_ops snd_via686_playback_ops = {
1356	.open = snd_via686_playback_open,
1357	.close = snd_via82xx_pcm_close,
1358	.hw_params = snd_via82xx_hw_params,
1359	.hw_free = snd_via82xx_hw_free,
1360	.prepare = snd_via686_playback_prepare,
1361	.trigger = snd_via82xx_pcm_trigger,
1362	.pointer = snd_via686_pcm_pointer,
1363	};
1364
1365	/* via686 capture callbacks */
1366	static const struct snd_pcm_ops snd_via686_capture_ops = {
1367	.open = snd_via82xx_capture_open,
1368	.close = snd_via82xx_pcm_close,
1369	.hw_params = snd_via82xx_hw_params,
1370	.hw_free = snd_via82xx_hw_free,
1371	.prepare = snd_via686_capture_prepare,
1372	.trigger = snd_via82xx_pcm_trigger,
1373	.pointer = snd_via686_pcm_pointer,
1374	};
1375
1376	/* via823x DSX playback callbacks */
1377	static const struct snd_pcm_ops snd_via8233_playback_ops = {
1378	.open = snd_via8233_playback_open,
1379	.close = snd_via8233_playback_close,
1380	.hw_params = snd_via82xx_hw_params,
1381	.hw_free = snd_via82xx_hw_free,
1382	.prepare = snd_via8233_playback_prepare,
1383	.trigger = snd_via82xx_pcm_trigger,
1384	.pointer = snd_via8233_pcm_pointer,
1385	};
1386
1387	/* via823x multi-channel playback callbacks */
1388	static const struct snd_pcm_ops snd_via8233_multi_ops = {
1389	.open = snd_via8233_multi_open,
1390	.close = snd_via82xx_pcm_close,
1391	.hw_params = snd_via82xx_hw_params,
1392	.hw_free = snd_via82xx_hw_free,
1393	.prepare = snd_via8233_multi_prepare,
1394	.trigger = snd_via82xx_pcm_trigger,
1395	.pointer = snd_via8233_pcm_pointer,
1396	};
1397
1398	/* via823x capture callbacks */
1399	static const struct snd_pcm_ops snd_via8233_capture_ops = {
1400	.open = snd_via82xx_capture_open,
1401	.close = snd_via82xx_pcm_close,
1402	.hw_params = snd_via82xx_hw_params,
1403	.hw_free = snd_via82xx_hw_free,
1404	.prepare = snd_via8233_capture_prepare,
1405	.trigger = snd_via82xx_pcm_trigger,
1406	.pointer = snd_via8233_pcm_pointer,
1407	};
1408
1409
1410	static void init_viadev(struct via82xx *chip, int idx, unsigned int reg_offset,
1411	int shadow_pos, int direction)
1412	{
1413	chip->devs[idx].reg_offset = reg_offset;
1414	chip->devs[idx].shadow_shift = shadow_pos * 4;
1415	chip->devs[idx].direction = direction;
1416	chip->devs[idx].port = chip->port + reg_offset;
1417	}
1418
1419	/*
1420	* create pcm instances for VIA8233, 8233C and 8235 (not 8233A)
1421	*/
1422	static int snd_via8233_pcm_new(struct via82xx *chip)
1423	{
1424	struct snd_pcm *pcm;
1425	struct snd_pcm_chmap *chmap;
1426	int i, err;
1427
1428	chip->playback_devno = 0; /* x 4 */
1429	chip->multi_devno = 4; /* x 1 */
1430	chip->capture_devno = 5; /* x 2 */
1431	chip->num_devs = 7;
1432	chip->intr_mask = 0x33033333; /* FLAG|EOL for rec0-1, mc, sdx0-3 */
1433
1434	/* PCM #0: 4 DSX playbacks and 1 capture */
1435	err = snd_pcm_new(card: chip->card, id: chip->card->shortname, device: 0, playback_count: 4, capture_count: 1, rpcm: &pcm);
1436	if (err < 0)
1437	return err;
1438	snd_pcm_set_ops(pcm, direction: SNDRV_PCM_STREAM_PLAYBACK, ops: &snd_via8233_playback_ops);
1439	snd_pcm_set_ops(pcm, direction: SNDRV_PCM_STREAM_CAPTURE, ops: &snd_via8233_capture_ops);
1440	pcm->private_data = chip;
1441	strcpy(p: pcm->name, q: chip->card->shortname);
1442	chip->pcms[0] = pcm;
1443	/* set up playbacks */
1444	for (i = 0; i < 4; i++)
1445	init_viadev(chip, idx: i, reg_offset: 0x10 * i, shadow_pos: i, direction: 0);
1446	/* capture */
1447	init_viadev(chip, idx: chip->capture_devno, reg_offset: VIA_REG_CAPTURE_8233_STATUS, shadow_pos: 6, direction: 1);
1448
1449	snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1450	data: &chip->pci->dev,
1451	size: 64*1024, VIA_MAX_BUFSIZE);
1452
1453	err = snd_pcm_add_chmap_ctls(pcm, stream: SNDRV_PCM_STREAM_PLAYBACK,
1454	chmap: snd_pcm_std_chmaps, max_channels: 2, private_value: 0,
1455	info_ret: &chmap);
1456	if (err < 0)
1457	return err;
1458
1459	/* PCM #1: multi-channel playback and 2nd capture */
1460	err = snd_pcm_new(card: chip->card, id: chip->card->shortname, device: 1, playback_count: 1, capture_count: 1, rpcm: &pcm);
1461	if (err < 0)
1462	return err;
1463	snd_pcm_set_ops(pcm, direction: SNDRV_PCM_STREAM_PLAYBACK, ops: &snd_via8233_multi_ops);
1464	snd_pcm_set_ops(pcm, direction: SNDRV_PCM_STREAM_CAPTURE, ops: &snd_via8233_capture_ops);
1465	pcm->private_data = chip;
1466	strcpy(p: pcm->name, q: chip->card->shortname);
1467	chip->pcms[1] = pcm;
1468	/* set up playback */
1469	init_viadev(chip, idx: chip->multi_devno, reg_offset: VIA_REG_MULTPLAY_STATUS, shadow_pos: 4, direction: 0);
1470	/* set up capture */
1471	init_viadev(chip, idx: chip->capture_devno + 1, reg_offset: VIA_REG_CAPTURE_8233_STATUS + 0x10, shadow_pos: 7, direction: 1);
1472
1473	snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1474	data: &chip->pci->dev,
1475	size: 64*1024, VIA_MAX_BUFSIZE);
1476
1477	err = snd_pcm_add_chmap_ctls(pcm, stream: SNDRV_PCM_STREAM_PLAYBACK,
1478	chmap: snd_pcm_alt_chmaps, max_channels: 6, private_value: 0,
1479	info_ret: &chmap);
1480	if (err < 0)
1481	return err;
1482	chip->ac97->chmaps[SNDRV_PCM_STREAM_PLAYBACK] = chmap;
1483
1484	return 0;
1485	}
1486
1487	/*
1488	* create pcm instances for VIA8233A
1489	*/
1490	static int snd_via8233a_pcm_new(struct via82xx *chip)
1491	{
1492	struct snd_pcm *pcm;
1493	struct snd_pcm_chmap *chmap;
1494	int err;
1495
1496	chip->multi_devno = 0;
1497	chip->playback_devno = 1;
1498	chip->capture_devno = 2;
1499	chip->num_devs = 3;
1500	chip->intr_mask = 0x03033000; /* FLAG|EOL for rec0, mc, sdx3 */
1501
1502	/* PCM #0: multi-channel playback and capture */
1503	err = snd_pcm_new(card: chip->card, id: chip->card->shortname, device: 0, playback_count: 1, capture_count: 1, rpcm: &pcm);
1504	if (err < 0)
1505	return err;
1506	snd_pcm_set_ops(pcm, direction: SNDRV_PCM_STREAM_PLAYBACK, ops: &snd_via8233_multi_ops);
1507	snd_pcm_set_ops(pcm, direction: SNDRV_PCM_STREAM_CAPTURE, ops: &snd_via8233_capture_ops);
1508	pcm->private_data = chip;
1509	strcpy(p: pcm->name, q: chip->card->shortname);
1510	chip->pcms[0] = pcm;
1511	/* set up playback */
1512	init_viadev(chip, idx: chip->multi_devno, reg_offset: VIA_REG_MULTPLAY_STATUS, shadow_pos: 4, direction: 0);
1513	/* capture */
1514	init_viadev(chip, idx: chip->capture_devno, reg_offset: VIA_REG_CAPTURE_8233_STATUS, shadow_pos: 6, direction: 1);
1515
1516	snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1517	data: &chip->pci->dev,
1518	size: 64*1024, VIA_MAX_BUFSIZE);
1519
1520	err = snd_pcm_add_chmap_ctls(pcm, stream: SNDRV_PCM_STREAM_PLAYBACK,
1521	chmap: snd_pcm_alt_chmaps, max_channels: 6, private_value: 0,
1522	info_ret: &chmap);
1523	if (err < 0)
1524	return err;
1525	chip->ac97->chmaps[SNDRV_PCM_STREAM_PLAYBACK] = chmap;
1526
1527	/* SPDIF supported? */
1528	if (! ac97_can_spdif(ac97: chip->ac97))
1529	return 0;
1530
1531	/* PCM #1: DXS3 playback (for spdif) */
1532	err = snd_pcm_new(card: chip->card, id: chip->card->shortname, device: 1, playback_count: 1, capture_count: 0, rpcm: &pcm);
1533	if (err < 0)
1534	return err;
1535	snd_pcm_set_ops(pcm, direction: SNDRV_PCM_STREAM_PLAYBACK, ops: &snd_via8233_playback_ops);
1536	pcm->private_data = chip;
1537	strcpy(p: pcm->name, q: chip->card->shortname);
1538	chip->pcms[1] = pcm;
1539	/* set up playback */
1540	init_viadev(chip, idx: chip->playback_devno, reg_offset: 0x30, shadow_pos: 3, direction: 0);
1541
1542	snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1543	data: &chip->pci->dev,
1544	size: 64*1024, VIA_MAX_BUFSIZE);
1545	return 0;
1546	}
1547
1548	/*
1549	* create a pcm instance for via686a/b
1550	*/
1551	static int snd_via686_pcm_new(struct via82xx *chip)
1552	{
1553	struct snd_pcm *pcm;
1554	int err;
1555
1556	chip->playback_devno = 0;
1557	chip->capture_devno = 1;
1558	chip->num_devs = 2;
1559	chip->intr_mask = 0x77; /* FLAG | EOL for PB, CP, FM */
1560
1561	err = snd_pcm_new(card: chip->card, id: chip->card->shortname, device: 0, playback_count: 1, capture_count: 1, rpcm: &pcm);
1562	if (err < 0)
1563	return err;
1564	snd_pcm_set_ops(pcm, direction: SNDRV_PCM_STREAM_PLAYBACK, ops: &snd_via686_playback_ops);
1565	snd_pcm_set_ops(pcm, direction: SNDRV_PCM_STREAM_CAPTURE, ops: &snd_via686_capture_ops);
1566	pcm->private_data = chip;
1567	strcpy(p: pcm->name, q: chip->card->shortname);
1568	chip->pcms[0] = pcm;
1569	init_viadev(chip, idx: 0, reg_offset: VIA_REG_PLAYBACK_STATUS, shadow_pos: 0, direction: 0);
1570	init_viadev(chip, idx: 1, reg_offset: VIA_REG_CAPTURE_STATUS, shadow_pos: 0, direction: 1);
1571
1572	snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1573	data: &chip->pci->dev,
1574	size: 64*1024, VIA_MAX_BUFSIZE);
1575	return 0;
1576	}
1577
1578
1579	/*
1580	* Mixer part
1581	*/
1582
1583	static int snd_via8233_capture_source_info(struct snd_kcontrol *kcontrol,
1584	struct snd_ctl_elem_info *uinfo)
1585	{
1586	/* formerly they were "Line" and "Mic", but it looks like that they
1587	* have nothing to do with the actual physical connections...
1588	*/
1589	static const char * const texts[2] = {
1590	"Input1", "Input2"
1591	};
1592	return snd_ctl_enum_info(info: uinfo, channels: 1, items: 2, names: texts);
1593	}
1594
1595	static int snd_via8233_capture_source_get(struct snd_kcontrol *kcontrol,
1596	struct snd_ctl_elem_value *ucontrol)
1597	{
1598	struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1599	unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1600	ucontrol->value.enumerated.item[0] = inb(port) & VIA_REG_CAPTURE_CHANNEL_MIC ? 1 : 0;
1601	return 0;
1602	}
1603
1604	static int snd_via8233_capture_source_put(struct snd_kcontrol *kcontrol,
1605	struct snd_ctl_elem_value *ucontrol)
1606	{
1607	struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1608	unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1609	u8 val, oval;
1610
1611	spin_lock_irq(lock: &chip->reg_lock);
1612	oval = inb(port);
1613	val = oval & ~VIA_REG_CAPTURE_CHANNEL_MIC;
1614	if (ucontrol->value.enumerated.item[0])
1615	val |= VIA_REG_CAPTURE_CHANNEL_MIC;
1616	if (val != oval)
1617	outb(value: val, port);
1618	spin_unlock_irq(lock: &chip->reg_lock);
1619	return val != oval;
1620	}
1621
1622	static struct snd_kcontrol_new snd_via8233_capture_source = {
1623	.name = "Input Source Select",
1624	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1625	.info = snd_via8233_capture_source_info,
1626	.get = snd_via8233_capture_source_get,
1627	.put = snd_via8233_capture_source_put,
1628	};
1629
1630	#define snd_via8233_dxs3_spdif_info snd_ctl_boolean_mono_info
1631
1632	static int snd_via8233_dxs3_spdif_get(struct snd_kcontrol *kcontrol,
1633	struct snd_ctl_elem_value *ucontrol)
1634	{
1635	struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1636	u8 val;
1637
1638	pci_read_config_byte(dev: chip->pci, VIA8233_SPDIF_CTRL, val: &val);
1639	ucontrol->value.integer.value[0] = (val & VIA8233_SPDIF_DX3) ? 1 : 0;
1640	return 0;
1641	}
1642
1643	static int snd_via8233_dxs3_spdif_put(struct snd_kcontrol *kcontrol,
1644	struct snd_ctl_elem_value *ucontrol)
1645	{
1646	struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1647	u8 val, oval;
1648
1649	pci_read_config_byte(dev: chip->pci, VIA8233_SPDIF_CTRL, val: &oval);
1650	val = oval & ~VIA8233_SPDIF_DX3;
1651	if (ucontrol->value.integer.value[0])
1652	val |= VIA8233_SPDIF_DX3;
1653	/* save the spdif flag for rate filtering */
1654	chip->spdif_on = ucontrol->value.integer.value[0] ? 1 : 0;
1655	if (val != oval) {
1656	pci_write_config_byte(dev: chip->pci, VIA8233_SPDIF_CTRL, val);
1657	return 1;
1658	}
1659	return 0;
1660	}
1661
1662	static const struct snd_kcontrol_new snd_via8233_dxs3_spdif_control = {
1663	.name = SNDRV_CTL_NAME_IEC958("Output ",NONE,SWITCH),
1664	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1665	.info = snd_via8233_dxs3_spdif_info,
1666	.get = snd_via8233_dxs3_spdif_get,
1667	.put = snd_via8233_dxs3_spdif_put,
1668	};
1669
1670	static int snd_via8233_dxs_volume_info(struct snd_kcontrol *kcontrol,
1671	struct snd_ctl_elem_info *uinfo)
1672	{
1673	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1674	uinfo->count = 2;
1675	uinfo->value.integer.min = 0;
1676	uinfo->value.integer.max = VIA_DXS_MAX_VOLUME;
1677	return 0;
1678	}
1679
1680	static int snd_via8233_dxs_volume_get(struct snd_kcontrol *kcontrol,
1681	struct snd_ctl_elem_value *ucontrol)
1682	{
1683	struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1684	unsigned int idx = kcontrol->id.subdevice;
1685
1686	ucontrol->value.integer.value[0] = VIA_DXS_MAX_VOLUME - chip->playback_volume[idx][0];
1687	ucontrol->value.integer.value[1] = VIA_DXS_MAX_VOLUME - chip->playback_volume[idx][1];
1688	return 0;
1689	}
1690
1691	static int snd_via8233_pcmdxs_volume_get(struct snd_kcontrol *kcontrol,
1692	struct snd_ctl_elem_value *ucontrol)
1693	{
1694	struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1695	ucontrol->value.integer.value[0] = VIA_DXS_MAX_VOLUME - chip->playback_volume_c[0];
1696	ucontrol->value.integer.value[1] = VIA_DXS_MAX_VOLUME - chip->playback_volume_c[1];
1697	return 0;
1698	}
1699
1700	static int snd_via8233_dxs_volume_put(struct snd_kcontrol *kcontrol,
1701	struct snd_ctl_elem_value *ucontrol)
1702	{
1703	struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1704	unsigned int idx = kcontrol->id.subdevice;
1705	unsigned long port = chip->port + 0x10 * idx;
1706	unsigned char val;
1707	int i, change = 0;
1708
1709	for (i = 0; i < 2; i++) {
1710	val = ucontrol->value.integer.value[i];
1711	if (val > VIA_DXS_MAX_VOLUME)
1712	val = VIA_DXS_MAX_VOLUME;
1713	val = VIA_DXS_MAX_VOLUME - val;
1714	change |= val != chip->playback_volume[idx][i];
1715	if (change) {
1716	chip->playback_volume[idx][i] = val;
1717	outb(value: val, port: port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1718	}
1719	}
1720	return change;
1721	}
1722
1723	static int snd_via8233_pcmdxs_volume_put(struct snd_kcontrol *kcontrol,
1724	struct snd_ctl_elem_value *ucontrol)
1725	{
1726	struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1727	unsigned int idx;
1728	unsigned char val;
1729	int i, change = 0;
1730
1731	for (i = 0; i < 2; i++) {
1732	val = ucontrol->value.integer.value[i];
1733	if (val > VIA_DXS_MAX_VOLUME)
1734	val = VIA_DXS_MAX_VOLUME;
1735	val = VIA_DXS_MAX_VOLUME - val;
1736	if (val != chip->playback_volume_c[i]) {
1737	change = 1;
1738	chip->playback_volume_c[i] = val;
1739	for (idx = 0; idx < 4; idx++) {
1740	unsigned long port = chip->port + 0x10 * idx;
1741	chip->playback_volume[idx][i] = val;
1742	outb(value: val, port: port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1743	}
1744	}
1745	}
1746	return change;
1747	}
1748
1749	static const DECLARE_TLV_DB_SCALE(db_scale_dxs, -4650, 150, 1);
1750
1751	static const struct snd_kcontrol_new snd_via8233_pcmdxs_volume_control = {
1752	.name = "PCM Playback Volume",
1753	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1754	.access = (SNDRV_CTL_ELEM_ACCESS_READWRITE |
1755	SNDRV_CTL_ELEM_ACCESS_TLV_READ),
1756	.info = snd_via8233_dxs_volume_info,
1757	.get = snd_via8233_pcmdxs_volume_get,
1758	.put = snd_via8233_pcmdxs_volume_put,
1759	.tlv = { .p = db_scale_dxs }
1760	};
1761
1762	static const struct snd_kcontrol_new snd_via8233_dxs_volume_control = {
1763	.iface = SNDRV_CTL_ELEM_IFACE_PCM,
1764	.device = 0,
1765	/* .subdevice set later */
1766	.name = "PCM Playback Volume",
1767	.access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
1768	SNDRV_CTL_ELEM_ACCESS_TLV_READ |
1769	SNDRV_CTL_ELEM_ACCESS_INACTIVE,
1770	.info = snd_via8233_dxs_volume_info,
1771	.get = snd_via8233_dxs_volume_get,
1772	.put = snd_via8233_dxs_volume_put,
1773	.tlv = { .p = db_scale_dxs }
1774	};
1775
1776	/*
1777	*/
1778
1779	static void snd_via82xx_mixer_free_ac97_bus(struct snd_ac97_bus *bus)
1780	{
1781	struct via82xx *chip = bus->private_data;
1782	chip->ac97_bus = NULL;
1783	}
1784
1785	static void snd_via82xx_mixer_free_ac97(struct snd_ac97 *ac97)
1786	{
1787	struct via82xx *chip = ac97->private_data;
1788	chip->ac97 = NULL;
1789	}
1790
1791	static const struct ac97_quirk ac97_quirks[] = {
1792	{
1793	.subvendor = 0x1106,
1794	.subdevice = 0x4161,
1795	.codec_id = 0x56494161, /* VT1612A */
1796	.name = "Soltek SL-75DRV5",
1797	.type = AC97_TUNE_NONE
1798	},
1799	{ /* FIXME: which codec? */
1800	.subvendor = 0x1106,
1801	.subdevice = 0x4161,
1802	.name = "ASRock K7VT2",
1803	.type = AC97_TUNE_HP_ONLY
1804	},
1805	{
1806	.subvendor = 0x110a,
1807	.subdevice = 0x0079,
1808	.name = "Fujitsu Siemens D1289",
1809	.type = AC97_TUNE_HP_ONLY
1810	},
1811	{
1812	.subvendor = 0x1019,
1813	.subdevice = 0x0a81,
1814	.name = "ECS K7VTA3",
1815	.type = AC97_TUNE_HP_ONLY
1816	},
1817	{
1818	.subvendor = 0x1019,
1819	.subdevice = 0x0a85,
1820	.name = "ECS L7VMM2",
1821	.type = AC97_TUNE_HP_ONLY
1822	},
1823	{
1824	.subvendor = 0x1019,
1825	.subdevice = 0x1841,
1826	.name = "ECS K7VTA3",
1827	.type = AC97_TUNE_HP_ONLY
1828	},
1829	{
1830	.subvendor = 0x1849,
1831	.subdevice = 0x3059,
1832	.name = "ASRock K7VM2",
1833	.type = AC97_TUNE_HP_ONLY /* VT1616 */
1834	},
1835	{
1836	.subvendor = 0x14cd,
1837	.subdevice = 0x7002,
1838	.name = "Unknown",
1839	.type = AC97_TUNE_ALC_JACK
1840	},
1841	{
1842	.subvendor = 0x1071,
1843	.subdevice = 0x8590,
1844	.name = "Mitac Mobo",
1845	.type = AC97_TUNE_ALC_JACK
1846	},
1847	{
1848	.subvendor = 0x161f,
1849	.subdevice = 0x202b,
1850	.name = "Arima Notebook",
1851	.type = AC97_TUNE_HP_ONLY,
1852	},
1853	{
1854	.subvendor = 0x161f,
1855	.subdevice = 0x2032,
1856	.name = "Targa Traveller 811",
1857	.type = AC97_TUNE_HP_ONLY,
1858	},
1859	{
1860	.subvendor = 0x161f,
1861	.subdevice = 0x2032,
1862	.name = "m680x",
1863	.type = AC97_TUNE_HP_ONLY, /* http://launchpad.net/bugs/38546 */
1864	},
1865	{
1866	.subvendor = 0x1297,
1867	.subdevice = 0xa232,
1868	.name = "Shuttle AK32VN",
1869	.type = AC97_TUNE_HP_ONLY
1870	},
1871	{ } /* terminator */
1872	};
1873
1874	static int snd_via82xx_mixer_new(struct via82xx *chip, const char *quirk_override)
1875	{
1876	struct snd_ac97_template ac97;
1877	int err;
1878	static const struct snd_ac97_bus_ops ops = {
1879	.write = snd_via82xx_codec_write,
1880	.read = snd_via82xx_codec_read,
1881	.wait = snd_via82xx_codec_wait,
1882	};
1883
1884	err = snd_ac97_bus(card: chip->card, num: 0, ops: &ops, private_data: chip, rbus: &chip->ac97_bus);
1885	if (err < 0)
1886	return err;
1887	chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus;
1888	chip->ac97_bus->clock = chip->ac97_clock;
1889
1890	memset(&ac97, 0, sizeof(ac97));
1891	ac97.private_data = chip;
1892	ac97.private_free = snd_via82xx_mixer_free_ac97;
1893	ac97.pci = chip->pci;
1894	ac97.scaps = AC97_SCAP_SKIP_MODEM | AC97_SCAP_POWER_SAVE;
1895	err = snd_ac97_mixer(bus: chip->ac97_bus, template: &ac97, rac97: &chip->ac97);
1896	if (err < 0)
1897	return err;
1898
1899	snd_ac97_tune_hardware(ac97: chip->ac97, quirk: ac97_quirks, override: quirk_override);
1900
1901	if (chip->chip_type != TYPE_VIA686) {
1902	/* use slot 10/11 */
1903	snd_ac97_update_bits(ac97: chip->ac97, AC97_EXTENDED_STATUS, mask: 0x03 << 4, value: 0x03 << 4);
1904	}
1905
1906	return 0;
1907	}
1908
1909	#ifdef SUPPORT_JOYSTICK
1910	#define JOYSTICK_ADDR 0x200
1911	static int snd_via686_create_gameport(struct via82xx *chip, unsigned char *legacy)
1912	{
1913	struct gameport *gp;
1914
1915	if (!joystick)
1916	return -ENODEV;
1917
1918	if (!devm_request_region(chip->card->dev, JOYSTICK_ADDR, 8,
1919	"VIA686 gameport")) {
1920	dev_warn(chip->card->dev, "cannot reserve joystick port %#x\n",
1921	JOYSTICK_ADDR);
1922	return -EBUSY;
1923	}
1924
1925	chip->gameport = gp = gameport_allocate_port();
1926	if (!gp) {
1927	dev_err(chip->card->dev,
1928	"cannot allocate memory for gameport\n");
1929	return -ENOMEM;
1930	}
1931
1932	gameport_set_name(gameport: gp, name: "VIA686 Gameport");
1933	gameport_set_phys(gameport: gp, fmt: "pci%s/gameport0", pci_name(pdev: chip->pci));
1934	gameport_set_dev_parent(gp, &chip->pci->dev);
1935	gp->io = JOYSTICK_ADDR;
1936
1937	/* Enable legacy joystick port */
1938	*legacy |= VIA_FUNC_ENABLE_GAME;
1939	pci_write_config_byte(dev: chip->pci, VIA_FUNC_ENABLE, val: *legacy);
1940
1941	gameport_register_port(chip->gameport);
1942
1943	return 0;
1944	}
1945
1946	static void snd_via686_free_gameport(struct via82xx *chip)
1947	{
1948	if (chip->gameport) {
1949	gameport_unregister_port(gameport: chip->gameport);
1950	chip->gameport = NULL;
1951	}
1952	}
1953	#else
1954	static inline int snd_via686_create_gameport(struct via82xx *chip, unsigned char *legacy)
1955	{
1956	return -ENOSYS;
1957	}
1958	static inline void snd_via686_free_gameport(struct via82xx *chip) { }
1959	#endif
1960
1961
1962	/*
1963	*
1964	*/
1965
1966	static int snd_via8233_init_misc(struct via82xx *chip)
1967	{
1968	int i, err, caps;
1969	unsigned char val;
1970
1971	caps = chip->chip_type == TYPE_VIA8233A ? 1 : 2;
1972	for (i = 0; i < caps; i++) {
1973	snd_via8233_capture_source.index = i;
1974	err = snd_ctl_add(card: chip->card, kcontrol: snd_ctl_new1(kcontrolnew: &snd_via8233_capture_source, private_data: chip));
1975	if (err < 0)
1976	return err;
1977	}
1978	if (ac97_can_spdif(ac97: chip->ac97)) {
1979	err = snd_ctl_add(card: chip->card, kcontrol: snd_ctl_new1(kcontrolnew: &snd_via8233_dxs3_spdif_control, private_data: chip));
1980	if (err < 0)
1981	return err;
1982	}
1983	if (chip->chip_type != TYPE_VIA8233A) {
1984	/* when no h/w PCM volume control is found, use DXS volume control
1985	* as the PCM vol control
1986	*/
1987	if (!snd_ctl_find_id_mixer(card: chip->card, name: "PCM Playback Volume")) {
1988	dev_info(chip->card->dev,
1989	"Using DXS as PCM Playback\n");
1990	err = snd_ctl_add(card: chip->card, kcontrol: snd_ctl_new1(kcontrolnew: &snd_via8233_pcmdxs_volume_control, private_data: chip));
1991	if (err < 0)
1992	return err;
1993	}
1994	else /* Using DXS when PCM emulation is enabled is really weird */
1995	{
1996	for (i = 0; i < 4; ++i) {
1997	struct snd_kcontrol *kctl;
1998
1999	kctl = snd_ctl_new1(
2000	kcontrolnew: &snd_via8233_dxs_volume_control, private_data: chip);
2001	if (!kctl)
2002	return -ENOMEM;
2003	kctl->id.subdevice = i;
2004	err = snd_ctl_add(card: chip->card, kcontrol: kctl);
2005	if (err < 0)
2006	return err;
2007	chip->dxs_controls[i] = kctl;
2008	}
2009	}
2010	}
2011	/* select spdif data slot 10/11 */
2012	pci_read_config_byte(dev: chip->pci, VIA8233_SPDIF_CTRL, val: &val);
2013	val = (val & ~VIA8233_SPDIF_SLOT_MASK) | VIA8233_SPDIF_SLOT_1011;
2014	val &= ~VIA8233_SPDIF_DX3; /* SPDIF off as default */
2015	pci_write_config_byte(dev: chip->pci, VIA8233_SPDIF_CTRL, val);
2016
2017	return 0;
2018	}
2019
2020	static int snd_via686_init_misc(struct via82xx *chip)
2021	{
2022	unsigned char legacy, legacy_cfg;
2023	int rev_h = 0;
2024
2025	legacy = chip->old_legacy;
2026	legacy_cfg = chip->old_legacy_cfg;
2027	legacy |= VIA_FUNC_MIDI_IRQMASK; /* FIXME: correct? (disable MIDI) */
2028	legacy &= ~VIA_FUNC_ENABLE_GAME; /* disable joystick */
2029	if (chip->revision >= VIA_REV_686_H) {
2030	rev_h = 1;
2031	if (mpu_port >= 0x200) { /* force MIDI */
2032	mpu_port &= 0xfffc;
2033	pci_write_config_dword(dev: chip->pci, where: 0x18, val: mpu_port | 0x01);
2034	#ifdef CONFIG_PM_SLEEP
2035	chip->mpu_port_saved = mpu_port;
2036	#endif
2037	} else {
2038	mpu_port = pci_resource_start(chip->pci, 2);
2039	}
2040	} else {
2041	switch (mpu_port) { /* force MIDI */
2042	case 0x300:
2043	case 0x310:
2044	case 0x320:
2045	case 0x330:
2046	legacy_cfg &= ~(3 << 2);
2047	legacy_cfg |= (mpu_port & 0x0030) >> 2;
2048	break;
2049	default: /* no, use BIOS settings */
2050	if (legacy & VIA_FUNC_ENABLE_MIDI)
2051	mpu_port = 0x300 + ((legacy_cfg & 0x000c) << 2);
2052	break;
2053	}
2054	}
2055	if (mpu_port >= 0x200)
2056	chip->mpu_res = devm_request_region(&chip->pci->dev, mpu_port,
2057	2, "VIA82xx MPU401");
2058	if (chip->mpu_res) {
2059	if (rev_h)
2060	legacy |= VIA_FUNC_MIDI_PNP; /* enable PCI I/O 2 */
2061	legacy |= VIA_FUNC_ENABLE_MIDI;
2062	} else {
2063	if (rev_h)
2064	legacy &= ~VIA_FUNC_MIDI_PNP; /* disable PCI I/O 2 */
2065	legacy &= ~VIA_FUNC_ENABLE_MIDI;
2066	mpu_port = 0;
2067	}
2068
2069	pci_write_config_byte(dev: chip->pci, VIA_FUNC_ENABLE, val: legacy);
2070	pci_write_config_byte(dev: chip->pci, VIA_PNP_CONTROL, val: legacy_cfg);
2071	if (chip->mpu_res) {
2072	if (snd_mpu401_uart_new(card: chip->card, device: 0, MPU401_HW_VIA686A,
2073	port: mpu_port, MPU401_INFO_INTEGRATED |
2074	MPU401_INFO_IRQ_HOOK, irq: -1,
2075	rrawmidi: &chip->rmidi) < 0) {
2076	dev_warn(chip->card->dev,
2077	"unable to initialize MPU-401 at 0x%lx, skipping\n",
2078	mpu_port);
2079	legacy &= ~VIA_FUNC_ENABLE_MIDI;
2080	} else {
2081	legacy &= ~VIA_FUNC_MIDI_IRQMASK; /* enable MIDI interrupt */
2082	}
2083	pci_write_config_byte(dev: chip->pci, VIA_FUNC_ENABLE, val: legacy);
2084	}
2085
2086	snd_via686_create_gameport(chip, legacy: &legacy);
2087
2088	#ifdef CONFIG_PM_SLEEP
2089	chip->legacy_saved = legacy;
2090	chip->legacy_cfg_saved = legacy_cfg;
2091	#endif
2092
2093	return 0;
2094	}
2095
2096
2097	/*
2098	* proc interface
2099	*/
2100	static void snd_via82xx_proc_read(struct snd_info_entry *entry,
2101	struct snd_info_buffer *buffer)
2102	{
2103	struct via82xx *chip = entry->private_data;
2104	int i;
2105
2106	snd_iprintf(buffer, "%s\n\n", chip->card->longname);
2107	for (i = 0; i < 0xa0; i += 4) {
2108	snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i));
2109	}
2110	}
2111
2112	static void snd_via82xx_proc_init(struct via82xx *chip)
2113	{
2114	snd_card_ro_proc_new(card: chip->card, name: "via82xx", private_data: chip,
2115	read: snd_via82xx_proc_read);
2116	}
2117
2118	/*
2119	*
2120	*/
2121
2122	static int snd_via82xx_chip_init(struct via82xx *chip)
2123	{
2124	unsigned int val;
2125	unsigned long end_time;
2126	unsigned char pval;
2127
2128	#if 0 /* broken on K7M? */
2129	if (chip->chip_type == TYPE_VIA686)
2130	/* disable all legacy ports */
2131	pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, 0);
2132	#endif
2133	pci_read_config_byte(dev: chip->pci, VIA_ACLINK_STAT, val: &pval);
2134	if (! (pval & VIA_ACLINK_C00_READY)) { /* codec not ready? */
2135	/* deassert ACLink reset, force SYNC */
2136	pci_write_config_byte(dev: chip->pci, VIA_ACLINK_CTRL,
2137	VIA_ACLINK_CTRL_ENABLE |
2138	VIA_ACLINK_CTRL_RESET |
2139	VIA_ACLINK_CTRL_SYNC);
2140	udelay(100);
2141	#if 1 /* FIXME: should we do full reset here for all chip models? */
2142	pci_write_config_byte(dev: chip->pci, VIA_ACLINK_CTRL, val: 0x00);
2143	udelay(100);
2144	#else
2145	/* deassert ACLink reset, force SYNC (warm AC'97 reset) */
2146	pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
2147	VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC);
2148	udelay(2);
2149	#endif
2150	/* ACLink on, deassert ACLink reset, VSR, SGD data out */
2151	/* note - FM data out has trouble with non VRA codecs !! */
2152	pci_write_config_byte(dev: chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
2153	udelay(100);
2154	}
2155
2156	/* Make sure VRA is enabled, in case we didn't do a
2157	* complete codec reset, above */
2158	pci_read_config_byte(dev: chip->pci, VIA_ACLINK_CTRL, val: &pval);
2159	if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) {
2160	/* ACLink on, deassert ACLink reset, VSR, SGD data out */
2161	/* note - FM data out has trouble with non VRA codecs !! */
2162	pci_write_config_byte(dev: chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
2163	udelay(100);
2164	}
2165
2166	/* wait until codec ready */
2167	end_time = jiffies + msecs_to_jiffies(m: 750);
2168	do {
2169	pci_read_config_byte(dev: chip->pci, VIA_ACLINK_STAT, val: &pval);
2170	if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */
2171	break;
2172	schedule_timeout_uninterruptible(timeout: 1);
2173	} while (time_before(jiffies, end_time));
2174
2175	val = snd_via82xx_codec_xread(chip);
2176	if (val & VIA_REG_AC97_BUSY)
2177	dev_err(chip->card->dev,
2178	"AC'97 codec is not ready [0x%x]\n", val);
2179
2180	#if 0 /* FIXME: we don't support the second codec yet so skip the detection now.. */
2181	snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
2182	VIA_REG_AC97_SECONDARY_VALID |
2183	(VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
2184	end_time = jiffies + msecs_to_jiffies(750);
2185	snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
2186	VIA_REG_AC97_SECONDARY_VALID |
2187	(VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
2188	do {
2189	val = snd_via82xx_codec_xread(chip);
2190	if (val & VIA_REG_AC97_SECONDARY_VALID) {
2191	chip->ac97_secondary = 1;
2192	goto __ac97_ok2;
2193	}
2194	schedule_timeout_uninterruptible(1);
2195	} while (time_before(jiffies, end_time));
2196	/* This is ok, the most of motherboards have only one codec */
2197
2198	__ac97_ok2:
2199	#endif
2200
2201	if (chip->chip_type == TYPE_VIA686) {
2202	/* route FM trap to IRQ, disable FM trap */
2203	pci_write_config_byte(dev: chip->pci, VIA_FM_NMI_CTRL, val: 0);
2204	/* disable all GPI interrupts */
2205	outl(value: 0, VIAREG(chip, GPI_INTR));
2206	}
2207
2208	if (chip->chip_type != TYPE_VIA686) {
2209	/* Workaround for Award BIOS bug:
2210	* DXS channels don't work properly with VRA if MC97 is disabled.
2211	*/
2212	struct pci_dev *pci;
2213	pci = pci_get_device(vendor: 0x1106, device: 0x3068, NULL); /* MC97 */
2214	if (pci) {
2215	unsigned char data;
2216	pci_read_config_byte(dev: pci, where: 0x44, val: &data);
2217	pci_write_config_byte(dev: pci, where: 0x44, val: data | 0x40);
2218	pci_dev_put(dev: pci);
2219	}
2220	}
2221
2222	if (chip->chip_type != TYPE_VIA8233A) {
2223	int i, idx;
2224	for (idx = 0; idx < 4; idx++) {
2225	unsigned long port = chip->port + 0x10 * idx;
2226	for (i = 0; i < 2; i++) {
2227	chip->playback_volume[idx][i]=chip->playback_volume_c[i];
2228	outb(value: chip->playback_volume_c[i],
2229	port: port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
2230	}
2231	}
2232	}
2233
2234	return 0;
2235	}
2236
2237	#ifdef CONFIG_PM_SLEEP
2238	/*
2239	* power management
2240	*/
2241	static int snd_via82xx_suspend(struct device *dev)
2242	{
2243	struct snd_card *card = dev_get_drvdata(dev);
2244	struct via82xx *chip = card->private_data;
2245	int i;
2246
2247	snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
2248	for (i = 0; i < chip->num_devs; i++)
2249	snd_via82xx_channel_reset(chip, viadev: &chip->devs[i]);
2250	snd_ac97_suspend(ac97: chip->ac97);
2251
2252	/* save misc values */
2253	if (chip->chip_type != TYPE_VIA686) {
2254	pci_read_config_byte(dev: chip->pci, VIA8233_SPDIF_CTRL, val: &chip->spdif_ctrl_saved);
2255	chip->capture_src_saved[0] = inb(port: chip->port + VIA_REG_CAPTURE_CHANNEL);
2256	chip->capture_src_saved[1] = inb(port: chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
2257	}
2258
2259	return 0;
2260	}
2261
2262	static int snd_via82xx_resume(struct device *dev)
2263	{
2264	struct snd_card *card = dev_get_drvdata(dev);
2265	struct via82xx *chip = card->private_data;
2266	int i;
2267
2268	snd_via82xx_chip_init(chip);
2269
2270	if (chip->chip_type == TYPE_VIA686) {
2271	if (chip->mpu_port_saved)
2272	pci_write_config_dword(dev: chip->pci, where: 0x18, val: chip->mpu_port_saved | 0x01);
2273	pci_write_config_byte(dev: chip->pci, VIA_FUNC_ENABLE, val: chip->legacy_saved);
2274	pci_write_config_byte(dev: chip->pci, VIA_PNP_CONTROL, val: chip->legacy_cfg_saved);
2275	} else {
2276	pci_write_config_byte(dev: chip->pci, VIA8233_SPDIF_CTRL, val: chip->spdif_ctrl_saved);
2277	outb(value: chip->capture_src_saved[0], port: chip->port + VIA_REG_CAPTURE_CHANNEL);
2278	outb(value: chip->capture_src_saved[1], port: chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
2279	}
2280
2281	snd_ac97_resume(ac97: chip->ac97);
2282
2283	for (i = 0; i < chip->num_devs; i++)
2284	snd_via82xx_channel_reset(chip, viadev: &chip->devs[i]);
2285
2286	snd_power_change_state(card, SNDRV_CTL_POWER_D0);
2287	return 0;
2288	}
2289
2290	static SIMPLE_DEV_PM_OPS(snd_via82xx_pm, snd_via82xx_suspend, snd_via82xx_resume);
2291	#define SND_VIA82XX_PM_OPS &snd_via82xx_pm
2292	#else
2293	#define SND_VIA82XX_PM_OPS NULL
2294	#endif /* CONFIG_PM_SLEEP */
2295
2296	static void snd_via82xx_free(struct snd_card *card)
2297	{
2298	struct via82xx *chip = card->private_data;
2299	unsigned int i;
2300
2301	/* disable interrupts */
2302	for (i = 0; i < chip->num_devs; i++)
2303	snd_via82xx_channel_reset(chip, viadev: &chip->devs[i]);
2304
2305	if (chip->chip_type == TYPE_VIA686) {
2306	snd_via686_free_gameport(chip);
2307	pci_write_config_byte(dev: chip->pci, VIA_FUNC_ENABLE, val: chip->old_legacy);
2308	pci_write_config_byte(dev: chip->pci, VIA_PNP_CONTROL, val: chip->old_legacy_cfg);
2309	}
2310	}
2311
2312	static int snd_via82xx_create(struct snd_card *card,
2313	struct pci_dev *pci,
2314	int chip_type,
2315	int revision,
2316	unsigned int ac97_clock)
2317	{
2318	struct via82xx *chip = card->private_data;
2319	int err;
2320
2321	err = pcim_enable_device(pdev: pci);
2322	if (err < 0)
2323	return err;
2324
2325	chip->chip_type = chip_type;
2326	chip->revision = revision;
2327
2328	spin_lock_init(&chip->reg_lock);
2329	spin_lock_init(&chip->rates[0].lock);
2330	spin_lock_init(&chip->rates[1].lock);
2331	chip->card = card;
2332	chip->pci = pci;
2333	chip->irq = -1;
2334
2335	pci_read_config_byte(dev: pci, VIA_FUNC_ENABLE, val: &chip->old_legacy);
2336	pci_read_config_byte(dev: pci, VIA_PNP_CONTROL, val: &chip->old_legacy_cfg);
2337	pci_write_config_byte(dev: chip->pci, VIA_FUNC_ENABLE,
2338	val: chip->old_legacy & ~(VIA_FUNC_ENABLE_SB|VIA_FUNC_ENABLE_FM));
2339
2340	err = pci_request_regions(pci, card->driver);
2341	if (err < 0)
2342	return err;
2343	chip->port = pci_resource_start(pci, 0);
2344	if (devm_request_irq(dev: &pci->dev, irq: pci->irq,
2345	handler: chip_type == TYPE_VIA8233 ?
2346	snd_via8233_interrupt : snd_via686_interrupt,
2347	IRQF_SHARED,
2348	KBUILD_MODNAME, dev_id: chip)) {
2349	dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
2350	return -EBUSY;
2351	}
2352	chip->irq = pci->irq;
2353	card->sync_irq = chip->irq;
2354	card->private_free = snd_via82xx_free;
2355	if (ac97_clock >= 8000 && ac97_clock <= 48000)
2356	chip->ac97_clock = ac97_clock;
2357
2358	err = snd_via82xx_chip_init(chip);
2359	if (err < 0)
2360	return err;
2361
2362	/* The 8233 ac97 controller does not implement the master bit
2363	* in the pci command register. IMHO this is a violation of the PCI spec.
2364	* We call pci_set_master here because it does not hurt. */
2365	pci_set_master(dev: pci);
2366	return 0;
2367	}
2368
2369	struct via823x_info {
2370	int revision;
2371	char *name;
2372	int type;
2373	};
2374	static const struct via823x_info via823x_cards[] = {
2375	{ VIA_REV_PRE_8233, "VIA 8233-Pre", TYPE_VIA8233 },
2376	{ VIA_REV_8233C, "VIA 8233C", TYPE_VIA8233 },
2377	{ VIA_REV_8233, "VIA 8233", TYPE_VIA8233 },
2378	{ VIA_REV_8233A, "VIA 8233A", TYPE_VIA8233A },
2379	{ VIA_REV_8235, "VIA 8235", TYPE_VIA8233 },
2380	{ VIA_REV_8237, "VIA 8237", TYPE_VIA8233 },
2381	{ VIA_REV_8251, "VIA 8251", TYPE_VIA8233 },
2382	};
2383
2384	/*
2385	* auto detection of DXS channel supports.
2386	*/
2387
2388	static const struct snd_pci_quirk dxs_allowlist[] = {
2389	SND_PCI_QUIRK(0x1005, 0x4710, "Avance Logic Mobo", VIA_DXS_ENABLE),
2390	SND_PCI_QUIRK(0x1019, 0x0996, "ESC Mobo", VIA_DXS_48K),
2391	SND_PCI_QUIRK(0x1019, 0x0a81, "ECS K7VTA3 v8.0", VIA_DXS_NO_VRA),
2392	SND_PCI_QUIRK(0x1019, 0x0a85, "ECS L7VMM2", VIA_DXS_NO_VRA),
2393	SND_PCI_QUIRK_VENDOR(0x1019, "ESC K8", VIA_DXS_SRC),
2394	SND_PCI_QUIRK(0x1019, 0xaa01, "ESC K8T890-A", VIA_DXS_SRC),
2395	SND_PCI_QUIRK(0x1025, 0x0033, "Acer Inspire 1353LM", VIA_DXS_NO_VRA),
2396	SND_PCI_QUIRK(0x1025, 0x0046, "Acer Aspire 1524 WLMi", VIA_DXS_SRC),
2397	SND_PCI_QUIRK_VENDOR(0x1043, "ASUS A7/A8", VIA_DXS_NO_VRA),
2398	SND_PCI_QUIRK_VENDOR(0x1071, "Diverse Notebook", VIA_DXS_NO_VRA),
2399	SND_PCI_QUIRK(0x10cf, 0x118e, "FSC Laptop", VIA_DXS_ENABLE),
2400	SND_PCI_QUIRK_VENDOR(0x1106, "ASRock", VIA_DXS_SRC),
2401	SND_PCI_QUIRK(0x1297, 0xa231, "Shuttle AK31v2", VIA_DXS_SRC),
2402	SND_PCI_QUIRK(0x1297, 0xa232, "Shuttle", VIA_DXS_SRC),
2403	SND_PCI_QUIRK(0x1297, 0xc160, "Shuttle Sk41G", VIA_DXS_SRC),
2404	SND_PCI_QUIRK(0x1458, 0xa002, "Gigabyte GA-7VAXP", VIA_DXS_ENABLE),
2405	SND_PCI_QUIRK(0x1462, 0x3800, "MSI KT266", VIA_DXS_ENABLE),
2406	SND_PCI_QUIRK(0x1462, 0x7120, "MSI KT4V", VIA_DXS_ENABLE),
2407	SND_PCI_QUIRK(0x1462, 0x7142, "MSI K8MM-V", VIA_DXS_ENABLE),
2408	SND_PCI_QUIRK_VENDOR(0x1462, "MSI Mobo", VIA_DXS_SRC),
2409	SND_PCI_QUIRK(0x147b, 0x1401, "ABIT KD7(-RAID)", VIA_DXS_ENABLE),
2410	SND_PCI_QUIRK(0x147b, 0x1411, "ABIT VA-20", VIA_DXS_ENABLE),
2411	SND_PCI_QUIRK(0x147b, 0x1413, "ABIT KV8 Pro", VIA_DXS_ENABLE),
2412	SND_PCI_QUIRK(0x147b, 0x1415, "ABIT AV8", VIA_DXS_NO_VRA),
2413	SND_PCI_QUIRK(0x14ff, 0x0403, "Twinhead mobo", VIA_DXS_ENABLE),
2414	SND_PCI_QUIRK(0x14ff, 0x0408, "Twinhead laptop", VIA_DXS_SRC),
2415	SND_PCI_QUIRK(0x1558, 0x4701, "Clevo D470", VIA_DXS_SRC),
2416	SND_PCI_QUIRK(0x1584, 0x8120, "Diverse Laptop", VIA_DXS_ENABLE),
2417	SND_PCI_QUIRK(0x1584, 0x8123, "Targa/Uniwill", VIA_DXS_NO_VRA),
2418	SND_PCI_QUIRK(0x161f, 0x202b, "Amira Notebook", VIA_DXS_NO_VRA),
2419	SND_PCI_QUIRK(0x161f, 0x2032, "m680x machines", VIA_DXS_48K),
2420	SND_PCI_QUIRK(0x1631, 0xe004, "PB EasyNote 3174", VIA_DXS_ENABLE),
2421	SND_PCI_QUIRK(0x1695, 0x3005, "EPoX EP-8K9A", VIA_DXS_ENABLE),
2422	SND_PCI_QUIRK_VENDOR(0x1695, "EPoX mobo", VIA_DXS_SRC),
2423	SND_PCI_QUIRK_VENDOR(0x16f3, "Jetway K8", VIA_DXS_SRC),
2424	SND_PCI_QUIRK_VENDOR(0x1734, "FSC Laptop", VIA_DXS_SRC),
2425	SND_PCI_QUIRK(0x1849, 0x3059, "ASRock K7VM2", VIA_DXS_NO_VRA),
2426	SND_PCI_QUIRK_VENDOR(0x1849, "ASRock mobo", VIA_DXS_SRC),
2427	SND_PCI_QUIRK(0x1919, 0x200a, "Soltek SL-K8", VIA_DXS_NO_VRA),
2428	SND_PCI_QUIRK(0x4005, 0x4710, "MSI K7T266", VIA_DXS_SRC),
2429	{ } /* terminator */
2430	};
2431
2432	static int check_dxs_list(struct pci_dev *pci, int revision)
2433	{
2434	const struct snd_pci_quirk *w;
2435
2436	w = snd_pci_quirk_lookup(pci, list: dxs_allowlist);
2437	if (w) {
2438	dev_dbg(&pci->dev, "DXS allow list for %s found\n",
2439	snd_pci_quirk_name(w));
2440	return w->value;
2441	}
2442
2443	/* for newer revision, default to DXS_SRC */
2444	if (revision >= VIA_REV_8235)
2445	return VIA_DXS_SRC;
2446
2447	/*
2448	* not detected, try 48k rate only to be sure.
2449	*/
2450	dev_info(&pci->dev, "Assuming DXS channels with 48k fixed sample rate.\n");
2451	dev_info(&pci->dev, " Please try dxs_support=5 option\n");
2452	dev_info(&pci->dev, " and report if it works on your machine.\n");
2453	dev_info(&pci->dev, " For more details, read ALSA-Configuration.txt.\n");
2454	return VIA_DXS_48K;
2455	};
2456
2457	static int __snd_via82xx_probe(struct pci_dev *pci,
2458	const struct pci_device_id *pci_id)
2459	{
2460	struct snd_card *card;
2461	struct via82xx *chip;
2462	int chip_type = 0, card_type;
2463	unsigned int i;
2464	int err;
2465
2466	err = snd_devm_card_new(parent: &pci->dev, idx: index, xid: id, THIS_MODULE,
2467	extra_size: sizeof(*chip), card_ret: &card);
2468	if (err < 0)
2469	return err;
2470	chip = card->private_data;
2471
2472	card_type = pci_id->driver_data;
2473	switch (card_type) {
2474	case TYPE_CARD_VIA686:
2475	strcpy(p: card->driver, q: "VIA686A");
2476	sprintf(buf: card->shortname, fmt: "VIA 82C686A/B rev%x", pci->revision);
2477	chip_type = TYPE_VIA686;
2478	break;
2479	case TYPE_CARD_VIA8233:
2480	chip_type = TYPE_VIA8233;
2481	sprintf(buf: card->shortname, fmt: "VIA 823x rev%x", pci->revision);
2482	for (i = 0; i < ARRAY_SIZE(via823x_cards); i++) {
2483	if (pci->revision == via823x_cards[i].revision) {
2484	chip_type = via823x_cards[i].type;
2485	strcpy(p: card->shortname, q: via823x_cards[i].name);
2486	break;
2487	}
2488	}
2489	if (chip_type != TYPE_VIA8233A) {
2490	if (dxs_support == VIA_DXS_AUTO)
2491	dxs_support = check_dxs_list(pci, revision: pci->revision);
2492	/* force to use VIA8233 or 8233A model according to
2493	* dxs_support module option
2494	*/
2495	if (dxs_support == VIA_DXS_DISABLE)
2496	chip_type = TYPE_VIA8233A;
2497	else
2498	chip_type = TYPE_VIA8233;
2499	}
2500	if (chip_type == TYPE_VIA8233A)
2501	strcpy(p: card->driver, q: "VIA8233A");
2502	else if (pci->revision >= VIA_REV_8237)
2503	strcpy(p: card->driver, q: "VIA8237"); /* no slog assignment */
2504	else
2505	strcpy(p: card->driver, q: "VIA8233");
2506	break;
2507	default:
2508	dev_err(card->dev, "invalid card type %d\n", card_type);
2509	return -EINVAL;
2510	}
2511
2512	err = snd_via82xx_create(card, pci, chip_type, revision: pci->revision,
2513	ac97_clock);
2514	if (err < 0)
2515	return err;
2516	err = snd_via82xx_mixer_new(chip, quirk_override: ac97_quirk);
2517	if (err < 0)
2518	return err;
2519
2520	if (chip_type == TYPE_VIA686) {
2521	err = snd_via686_pcm_new(chip);
2522	if (err < 0)
2523	return err;
2524	err = snd_via686_init_misc(chip);
2525	if (err < 0)
2526	return err;
2527	} else {
2528	if (chip_type == TYPE_VIA8233A) {
2529	err = snd_via8233a_pcm_new(chip);
2530	if (err < 0)
2531	return err;
2532	// chip->dxs_fixed = 1; /* FIXME: use 48k for DXS #3? */
2533	} else {
2534	err = snd_via8233_pcm_new(chip);
2535	if (err < 0)
2536	return err;
2537	if (dxs_support == VIA_DXS_48K)
2538	chip->dxs_fixed = 1;
2539	else if (dxs_support == VIA_DXS_NO_VRA)
2540	chip->no_vra = 1;
2541	else if (dxs_support == VIA_DXS_SRC) {
2542	chip->no_vra = 1;
2543	chip->dxs_src = 1;
2544	}
2545	}
2546	err = snd_via8233_init_misc(chip);
2547	if (err < 0)
2548	return err;
2549	}
2550
2551	/* disable interrupts */
2552	for (i = 0; i < chip->num_devs; i++)
2553	snd_via82xx_channel_reset(chip, viadev: &chip->devs[i]);
2554
2555	snprintf(buf: card->longname, size: sizeof(card->longname),
2556	fmt: "%s with %s at %#lx, irq %d", card->shortname,
2557	snd_ac97_get_short_name(ac97: chip->ac97), chip->port, chip->irq);
2558
2559	snd_via82xx_proc_init(chip);
2560
2561	err = snd_card_register(card);
2562	if (err < 0)
2563	return err;
2564	pci_set_drvdata(pdev: pci, data: card);
2565	return 0;
2566	}
2567
2568	static int snd_via82xx_probe(struct pci_dev *pci,
2569	const struct pci_device_id *pci_id)
2570	{
2571	return snd_card_free_on_error(dev: &pci->dev, ret: __snd_via82xx_probe(pci, pci_id));
2572	}
2573
2574	static struct pci_driver via82xx_driver = {
2575	.name = KBUILD_MODNAME,
2576	.id_table = snd_via82xx_ids,
2577	.probe = snd_via82xx_probe,
2578	.driver = {
2579	.pm = SND_VIA82XX_PM_OPS,
2580	},
2581	};
2582
2583	module_pci_driver(via82xx_driver);
2584