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