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