2 * ALSA modem driver for VIA VT82xx (South Bridge)
4 * VT82C686A/B/C, VT8233A/C, VT8235
6 * Copyright (c) 2000 Jaroslav Kysela <perex@perex.cz>
7 * Tjeerd.Mulder <Tjeerd.Mulder@fujitsu-siemens.com>
8 * 2002 Takashi Iwai <tiwai@suse.de>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
29 * Sep. 2, 2004 Sasha Khapyorsky <sashak@alsa-project.org>
30 * Modified from original audio driver 'via82xx.c' to support AC97
35 #include <linux/delay.h>
36 #include <linux/interrupt.h>
37 #include <linux/init.h>
38 #include <linux/pci.h>
39 #include <linux/slab.h>
40 #include <linux/moduleparam.h>
41 #include <sound/core.h>
42 #include <sound/pcm.h>
43 #include <sound/pcm_params.h>
44 #include <sound/info.h>
45 #include <sound/ac97_codec.h>
46 #include <sound/initval.h>
49 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
50 MODULE_DESCRIPTION("VIA VT82xx modem");
51 MODULE_LICENSE("GPL");
52 MODULE_SUPPORTED_DEVICE("{{VIA,VT82C686A/B/C modem,pci}}");
54 static int index
= -2; /* Exclude the first card */
55 static char *id
= SNDRV_DEFAULT_STR1
; /* ID for this card */
56 static int ac97_clock
= 48000;
58 module_param(index
, int, 0444);
59 MODULE_PARM_DESC(index
, "Index value for VIA 82xx bridge.");
60 module_param(id
, charp
, 0444);
61 MODULE_PARM_DESC(id
, "ID string for VIA 82xx bridge.");
62 module_param(ac97_clock
, int, 0444);
63 MODULE_PARM_DESC(ac97_clock
, "AC'97 codec clock (default 48000Hz).");
65 /* just for backward compatibility */
67 module_param(enable
, bool, 0444);
74 #define VIAREG(via, x) ((via)->port + VIA_REG_##x)
75 #define VIADEV_REG(viadev, x) ((viadev)->port + VIA_REG_##x)
78 #define VIA_REG_OFFSET_STATUS 0x00 /* byte - channel status */
79 #define VIA_REG_STAT_ACTIVE 0x80 /* RO */
80 #define VIA_REG_STAT_PAUSED 0x40 /* RO */
81 #define VIA_REG_STAT_TRIGGER_QUEUED 0x08 /* RO */
82 #define VIA_REG_STAT_STOPPED 0x04 /* RWC */
83 #define VIA_REG_STAT_EOL 0x02 /* RWC */
84 #define VIA_REG_STAT_FLAG 0x01 /* RWC */
85 #define VIA_REG_OFFSET_CONTROL 0x01 /* byte - channel control */
86 #define VIA_REG_CTRL_START 0x80 /* WO */
87 #define VIA_REG_CTRL_TERMINATE 0x40 /* WO */
88 #define VIA_REG_CTRL_AUTOSTART 0x20
89 #define VIA_REG_CTRL_PAUSE 0x08 /* RW */
90 #define VIA_REG_CTRL_INT_STOP 0x04
91 #define VIA_REG_CTRL_INT_EOL 0x02
92 #define VIA_REG_CTRL_INT_FLAG 0x01
93 #define VIA_REG_CTRL_RESET 0x01 /* RW - probably reset? undocumented */
94 #define VIA_REG_CTRL_INT (VIA_REG_CTRL_INT_FLAG | VIA_REG_CTRL_INT_EOL | VIA_REG_CTRL_AUTOSTART)
95 #define VIA_REG_OFFSET_TYPE 0x02 /* byte - channel type (686 only) */
96 #define VIA_REG_TYPE_AUTOSTART 0x80 /* RW - autostart at EOL */
97 #define VIA_REG_TYPE_16BIT 0x20 /* RW */
98 #define VIA_REG_TYPE_STEREO 0x10 /* RW */
99 #define VIA_REG_TYPE_INT_LLINE 0x00
100 #define VIA_REG_TYPE_INT_LSAMPLE 0x04
101 #define VIA_REG_TYPE_INT_LESSONE 0x08
102 #define VIA_REG_TYPE_INT_MASK 0x0c
103 #define VIA_REG_TYPE_INT_EOL 0x02
104 #define VIA_REG_TYPE_INT_FLAG 0x01
105 #define VIA_REG_OFFSET_TABLE_PTR 0x04 /* dword - channel table pointer */
106 #define VIA_REG_OFFSET_CURR_PTR 0x04 /* dword - channel current pointer */
107 #define VIA_REG_OFFSET_STOP_IDX 0x08 /* dword - stop index, channel type, sample rate */
108 #define VIA_REG_OFFSET_CURR_COUNT 0x0c /* dword - channel current count (24 bit) */
109 #define VIA_REG_OFFSET_CURR_INDEX 0x0f /* byte - channel current index (for via8233 only) */
111 #define DEFINE_VIA_REGSET(name,val) \
113 VIA_REG_##name##_STATUS = (val),\
114 VIA_REG_##name##_CONTROL = (val) + 0x01,\
115 VIA_REG_##name##_TYPE = (val) + 0x02,\
116 VIA_REG_##name##_TABLE_PTR = (val) + 0x04,\
117 VIA_REG_##name##_CURR_PTR = (val) + 0x04,\
118 VIA_REG_##name##_STOP_IDX = (val) + 0x08,\
119 VIA_REG_##name##_CURR_COUNT = (val) + 0x0c,\
123 DEFINE_VIA_REGSET(MO
, 0x40);
124 DEFINE_VIA_REGSET(MI
, 0x50);
127 #define VIA_REG_AC97 0x80 /* dword */
128 #define VIA_REG_AC97_CODEC_ID_MASK (3<<30)
129 #define VIA_REG_AC97_CODEC_ID_SHIFT 30
130 #define VIA_REG_AC97_CODEC_ID_PRIMARY 0x00
131 #define VIA_REG_AC97_CODEC_ID_SECONDARY 0x01
132 #define VIA_REG_AC97_SECONDARY_VALID (1<<27)
133 #define VIA_REG_AC97_PRIMARY_VALID (1<<25)
134 #define VIA_REG_AC97_BUSY (1<<24)
135 #define VIA_REG_AC97_READ (1<<23)
136 #define VIA_REG_AC97_CMD_SHIFT 16
137 #define VIA_REG_AC97_CMD_MASK 0x7e
138 #define VIA_REG_AC97_DATA_SHIFT 0
139 #define VIA_REG_AC97_DATA_MASK 0xffff
141 #define VIA_REG_SGD_SHADOW 0x84 /* dword */
142 #define VIA_REG_SGD_STAT_PB_FLAG (1<<0)
143 #define VIA_REG_SGD_STAT_CP_FLAG (1<<1)
144 #define VIA_REG_SGD_STAT_FM_FLAG (1<<2)
145 #define VIA_REG_SGD_STAT_PB_EOL (1<<4)
146 #define VIA_REG_SGD_STAT_CP_EOL (1<<5)
147 #define VIA_REG_SGD_STAT_FM_EOL (1<<6)
148 #define VIA_REG_SGD_STAT_PB_STOP (1<<8)
149 #define VIA_REG_SGD_STAT_CP_STOP (1<<9)
150 #define VIA_REG_SGD_STAT_FM_STOP (1<<10)
151 #define VIA_REG_SGD_STAT_PB_ACTIVE (1<<12)
152 #define VIA_REG_SGD_STAT_CP_ACTIVE (1<<13)
153 #define VIA_REG_SGD_STAT_FM_ACTIVE (1<<14)
154 #define VIA_REG_SGD_STAT_MR_FLAG (1<<16)
155 #define VIA_REG_SGD_STAT_MW_FLAG (1<<17)
156 #define VIA_REG_SGD_STAT_MR_EOL (1<<20)
157 #define VIA_REG_SGD_STAT_MW_EOL (1<<21)
158 #define VIA_REG_SGD_STAT_MR_STOP (1<<24)
159 #define VIA_REG_SGD_STAT_MW_STOP (1<<25)
160 #define VIA_REG_SGD_STAT_MR_ACTIVE (1<<28)
161 #define VIA_REG_SGD_STAT_MW_ACTIVE (1<<29)
163 #define VIA_REG_GPI_STATUS 0x88
164 #define VIA_REG_GPI_INTR 0x8c
166 #define VIA_TBL_BIT_FLAG 0x40000000
167 #define VIA_TBL_BIT_EOL 0x80000000
170 #define VIA_ACLINK_STAT 0x40
171 #define VIA_ACLINK_C11_READY 0x20
172 #define VIA_ACLINK_C10_READY 0x10
173 #define VIA_ACLINK_C01_READY 0x04 /* secondary codec ready */
174 #define VIA_ACLINK_LOWPOWER 0x02 /* low-power state */
175 #define VIA_ACLINK_C00_READY 0x01 /* primary codec ready */
176 #define VIA_ACLINK_CTRL 0x41
177 #define VIA_ACLINK_CTRL_ENABLE 0x80 /* 0: disable, 1: enable */
178 #define VIA_ACLINK_CTRL_RESET 0x40 /* 0: assert, 1: de-assert */
179 #define VIA_ACLINK_CTRL_SYNC 0x20 /* 0: release SYNC, 1: force SYNC hi */
180 #define VIA_ACLINK_CTRL_SDO 0x10 /* 0: release SDO, 1: force SDO hi */
181 #define VIA_ACLINK_CTRL_VRA 0x08 /* 0: disable VRA, 1: enable VRA */
182 #define VIA_ACLINK_CTRL_PCM 0x04 /* 0: disable PCM, 1: enable PCM */
183 #define VIA_ACLINK_CTRL_FM 0x02 /* via686 only */
184 #define VIA_ACLINK_CTRL_SB 0x01 /* via686 only */
185 #define VIA_ACLINK_CTRL_INIT (VIA_ACLINK_CTRL_ENABLE|\
186 VIA_ACLINK_CTRL_RESET|\
188 #define VIA_FUNC_ENABLE 0x42
189 #define VIA_FUNC_MIDI_PNP 0x80
190 #define VIA_FUNC_MIDI_IRQMASK 0x40
191 #define VIA_FUNC_RX2C_WRITE 0x20
192 #define VIA_FUNC_SB_FIFO_EMPTY 0x10
193 #define VIA_FUNC_ENABLE_GAME 0x08
194 #define VIA_FUNC_ENABLE_FM 0x04
195 #define VIA_FUNC_ENABLE_MIDI 0x02
196 #define VIA_FUNC_ENABLE_SB 0x01
197 #define VIA_PNP_CONTROL 0x43
198 #define VIA_MC97_CTRL 0x44
199 #define VIA_MC97_CTRL_ENABLE 0x80
200 #define VIA_MC97_CTRL_SECONDARY 0x40
201 #define VIA_MC97_CTRL_INIT (VIA_MC97_CTRL_ENABLE|\
202 VIA_MC97_CTRL_SECONDARY)
209 struct snd_via_sg_table
{
214 #define VIA_TABLE_SIZE 255
217 unsigned int reg_offset
;
219 int direction
; /* playback = 0, capture = 1 */
220 struct snd_pcm_substream
*substream
;
222 unsigned int tbl_entries
; /* # descriptors */
223 struct snd_dma_buffer table
;
224 struct snd_via_sg_table
*idx_table
;
225 /* for recovery from the unexpected pointer */
226 unsigned int lastpos
;
227 unsigned int bufsize
;
228 unsigned int bufsize2
;
231 enum { TYPE_CARD_VIA82XX_MODEM
= 1 };
233 #define VIA_MAX_MODEM_DEVS 2
235 struct via82xx_modem
{
240 unsigned int intr_mask
; /* SGD_SHADOW mask to check interrupts */
243 struct snd_card
*card
;
245 unsigned int num_devs
;
246 unsigned int playback_devno
, capture_devno
;
247 struct viadev devs
[VIA_MAX_MODEM_DEVS
];
249 struct snd_pcm
*pcms
[2];
251 struct snd_ac97_bus
*ac97_bus
;
252 struct snd_ac97
*ac97
;
253 unsigned int ac97_clock
;
254 unsigned int ac97_secondary
; /* secondary AC'97 codec is present */
257 struct snd_info_entry
*proc_entry
;
260 static DEFINE_PCI_DEVICE_TABLE(snd_via82xx_modem_ids
) = {
261 { PCI_VDEVICE(VIA
, 0x3068), TYPE_CARD_VIA82XX_MODEM
, },
265 MODULE_DEVICE_TABLE(pci
, snd_via82xx_modem_ids
);
271 * allocate and initialize the descriptor buffers
272 * periods = number of periods
273 * fragsize = period size in bytes
275 static int build_via_table(struct viadev
*dev
, struct snd_pcm_substream
*substream
,
277 unsigned int periods
, unsigned int fragsize
)
279 unsigned int i
, idx
, ofs
, rest
;
280 struct via82xx_modem
*chip
= snd_pcm_substream_chip(substream
);
282 if (dev
->table
.area
== NULL
) {
283 /* the start of each lists must be aligned to 8 bytes,
284 * but the kernel pages are much bigger, so we don't care
286 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV
, snd_dma_pci_data(chip
->pci
),
287 PAGE_ALIGN(VIA_TABLE_SIZE
* 2 * 8),
291 if (! dev
->idx_table
) {
292 dev
->idx_table
= kmalloc(sizeof(*dev
->idx_table
) * VIA_TABLE_SIZE
, GFP_KERNEL
);
293 if (! dev
->idx_table
)
297 /* fill the entries */
300 for (i
= 0; i
< periods
; i
++) {
302 /* fill descriptors for a period.
303 * a period can be split to several descriptors if it's
304 * over page boundary.
311 if (idx
>= VIA_TABLE_SIZE
) {
312 snd_printk(KERN_ERR
"via82xx: too much table size!\n");
315 addr
= snd_pcm_sgbuf_get_addr(substream
, ofs
);
316 ((u32
*)dev
->table
.area
)[idx
<< 1] = cpu_to_le32(addr
);
317 r
= PAGE_SIZE
- (ofs
% PAGE_SIZE
);
322 if (i
== periods
- 1)
323 flag
= VIA_TBL_BIT_EOL
; /* buffer boundary */
325 flag
= VIA_TBL_BIT_FLAG
; /* period boundary */
327 flag
= 0; /* period continues to the next */
329 printk(KERN_DEBUG "via: tbl %d: at %d size %d "
330 "(rest %d)\n", idx, ofs, r, rest);
332 ((u32
*)dev
->table
.area
)[(idx
<<1) + 1] = cpu_to_le32(r
| flag
);
333 dev
->idx_table
[idx
].offset
= ofs
;
334 dev
->idx_table
[idx
].size
= r
;
339 dev
->tbl_entries
= idx
;
340 dev
->bufsize
= periods
* fragsize
;
341 dev
->bufsize2
= dev
->bufsize
/ 2;
346 static int clean_via_table(struct viadev
*dev
, struct snd_pcm_substream
*substream
,
349 if (dev
->table
.area
) {
350 snd_dma_free_pages(&dev
->table
);
351 dev
->table
.area
= NULL
;
353 kfree(dev
->idx_table
);
354 dev
->idx_table
= NULL
;
362 static inline unsigned int snd_via82xx_codec_xread(struct via82xx_modem
*chip
)
364 return inl(VIAREG(chip
, AC97
));
367 static inline void snd_via82xx_codec_xwrite(struct via82xx_modem
*chip
, unsigned int val
)
369 outl(val
, VIAREG(chip
, AC97
));
372 static int snd_via82xx_codec_ready(struct via82xx_modem
*chip
, int secondary
)
374 unsigned int timeout
= 1000; /* 1ms */
377 while (timeout
-- > 0) {
379 if (!((val
= snd_via82xx_codec_xread(chip
)) & VIA_REG_AC97_BUSY
))
382 snd_printk(KERN_ERR
"codec_ready: codec %i is not ready [0x%x]\n",
383 secondary
, snd_via82xx_codec_xread(chip
));
387 static int snd_via82xx_codec_valid(struct via82xx_modem
*chip
, int secondary
)
389 unsigned int timeout
= 1000; /* 1ms */
390 unsigned int val
, val1
;
391 unsigned int stat
= !secondary
? VIA_REG_AC97_PRIMARY_VALID
:
392 VIA_REG_AC97_SECONDARY_VALID
;
394 while (timeout
-- > 0) {
395 val
= snd_via82xx_codec_xread(chip
);
396 val1
= val
& (VIA_REG_AC97_BUSY
| stat
);
404 static void snd_via82xx_codec_wait(struct snd_ac97
*ac97
)
406 struct via82xx_modem
*chip
= ac97
->private_data
;
408 err
= snd_via82xx_codec_ready(chip
, ac97
->num
);
409 /* here we need to wait fairly for long time.. */
413 static void snd_via82xx_codec_write(struct snd_ac97
*ac97
,
417 struct via82xx_modem
*chip
= ac97
->private_data
;
419 if(reg
== AC97_GPIO_STATUS
) {
420 outl(val
, VIAREG(chip
, GPI_STATUS
));
423 xval
= !ac97
->num
? VIA_REG_AC97_CODEC_ID_PRIMARY
: VIA_REG_AC97_CODEC_ID_SECONDARY
;
424 xval
<<= VIA_REG_AC97_CODEC_ID_SHIFT
;
425 xval
|= reg
<< VIA_REG_AC97_CMD_SHIFT
;
426 xval
|= val
<< VIA_REG_AC97_DATA_SHIFT
;
427 snd_via82xx_codec_xwrite(chip
, xval
);
428 snd_via82xx_codec_ready(chip
, ac97
->num
);
431 static unsigned short snd_via82xx_codec_read(struct snd_ac97
*ac97
, unsigned short reg
)
433 struct via82xx_modem
*chip
= ac97
->private_data
;
434 unsigned int xval
, val
= 0xffff;
437 xval
= ac97
->num
<< VIA_REG_AC97_CODEC_ID_SHIFT
;
438 xval
|= ac97
->num
? VIA_REG_AC97_SECONDARY_VALID
: VIA_REG_AC97_PRIMARY_VALID
;
439 xval
|= VIA_REG_AC97_READ
;
440 xval
|= (reg
& 0x7f) << VIA_REG_AC97_CMD_SHIFT
;
443 snd_printk(KERN_ERR
"codec_read: codec %i is not valid [0x%x]\n",
444 ac97
->num
, snd_via82xx_codec_xread(chip
));
447 snd_via82xx_codec_xwrite(chip
, xval
);
449 if (snd_via82xx_codec_valid(chip
, ac97
->num
) >= 0) {
451 val
= snd_via82xx_codec_xread(chip
);
458 static void snd_via82xx_channel_reset(struct via82xx_modem
*chip
, struct viadev
*viadev
)
460 outb(VIA_REG_CTRL_PAUSE
| VIA_REG_CTRL_TERMINATE
| VIA_REG_CTRL_RESET
,
461 VIADEV_REG(viadev
, OFFSET_CONTROL
));
462 inb(VIADEV_REG(viadev
, OFFSET_CONTROL
));
464 /* disable interrupts */
465 outb(0x00, VIADEV_REG(viadev
, OFFSET_CONTROL
));
466 /* clear interrupts */
467 outb(0x03, VIADEV_REG(viadev
, OFFSET_STATUS
));
468 outb(0x00, VIADEV_REG(viadev
, OFFSET_TYPE
)); /* for via686 */
469 // outl(0, VIADEV_REG(viadev, OFFSET_CURR_PTR));
478 static irqreturn_t
snd_via82xx_interrupt(int irq
, void *dev_id
)
480 struct via82xx_modem
*chip
= dev_id
;
484 status
= inl(VIAREG(chip
, SGD_SHADOW
));
485 if (! (status
& chip
->intr_mask
)) {
490 /* check status for each stream */
491 spin_lock(&chip
->reg_lock
);
492 for (i
= 0; i
< chip
->num_devs
; i
++) {
493 struct viadev
*viadev
= &chip
->devs
[i
];
494 unsigned char c_status
= inb(VIADEV_REG(viadev
, OFFSET_STATUS
));
495 c_status
&= (VIA_REG_STAT_EOL
|VIA_REG_STAT_FLAG
|VIA_REG_STAT_STOPPED
);
498 if (viadev
->substream
&& viadev
->running
) {
499 spin_unlock(&chip
->reg_lock
);
500 snd_pcm_period_elapsed(viadev
->substream
);
501 spin_lock(&chip
->reg_lock
);
503 outb(c_status
, VIADEV_REG(viadev
, OFFSET_STATUS
)); /* ack */
505 spin_unlock(&chip
->reg_lock
);
516 static int snd_via82xx_pcm_trigger(struct snd_pcm_substream
*substream
, int cmd
)
518 struct via82xx_modem
*chip
= snd_pcm_substream_chip(substream
);
519 struct viadev
*viadev
= substream
->runtime
->private_data
;
520 unsigned char val
= 0;
523 case SNDRV_PCM_TRIGGER_START
:
524 case SNDRV_PCM_TRIGGER_SUSPEND
:
525 val
|= VIA_REG_CTRL_START
;
528 case SNDRV_PCM_TRIGGER_STOP
:
529 val
= VIA_REG_CTRL_TERMINATE
;
532 case SNDRV_PCM_TRIGGER_PAUSE_PUSH
:
533 val
|= VIA_REG_CTRL_PAUSE
;
536 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE
:
542 outb(val
, VIADEV_REG(viadev
, OFFSET_CONTROL
));
543 if (cmd
== SNDRV_PCM_TRIGGER_STOP
)
544 snd_via82xx_channel_reset(chip
, viadev
);
553 * calculate the linear position at the given sg-buffer index and the rest count
556 #define check_invalid_pos(viadev,pos) \
557 ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 ||\
558 viadev->lastpos < viadev->bufsize2))
560 static inline unsigned int calc_linear_pos(struct viadev
*viadev
, unsigned int idx
,
563 unsigned int size
, res
;
565 size
= viadev
->idx_table
[idx
].size
;
566 res
= viadev
->idx_table
[idx
].offset
+ size
- count
;
568 /* check the validity of the calculated position */
570 snd_printd(KERN_ERR
"invalid via82xx_cur_ptr (size = %d, count = %d)\n",
571 (int)size
, (int)count
);
572 res
= viadev
->lastpos
;
573 } else if (check_invalid_pos(viadev
, res
)) {
575 printk(KERN_DEBUG
"fail: idx = %i/%i, lastpos = 0x%x, "
576 "bufsize2 = 0x%x, offsize = 0x%x, size = 0x%x, "
577 "count = 0x%x\n", idx
, viadev
->tbl_entries
, viadev
->lastpos
,
578 viadev
->bufsize2
, viadev
->idx_table
[idx
].offset
,
579 viadev
->idx_table
[idx
].size
, count
);
581 if (count
&& size
< count
) {
582 snd_printd(KERN_ERR
"invalid via82xx_cur_ptr, "
583 "using last valid pointer\n");
584 res
= viadev
->lastpos
;
587 /* bogus count 0 on the DMA boundary? */
588 res
= viadev
->idx_table
[idx
].offset
;
590 /* count register returns full size
591 * when end of buffer is reached
593 res
= viadev
->idx_table
[idx
].offset
+ size
;
594 if (check_invalid_pos(viadev
, res
)) {
595 snd_printd(KERN_ERR
"invalid via82xx_cur_ptr (2), "
596 "using last valid pointer\n");
597 res
= viadev
->lastpos
;
601 viadev
->lastpos
= res
; /* remember the last position */
602 if (res
>= viadev
->bufsize
)
603 res
-= viadev
->bufsize
;
608 * get the current pointer on via686
610 static snd_pcm_uframes_t
snd_via686_pcm_pointer(struct snd_pcm_substream
*substream
)
612 struct via82xx_modem
*chip
= snd_pcm_substream_chip(substream
);
613 struct viadev
*viadev
= substream
->runtime
->private_data
;
614 unsigned int idx
, ptr
, count
, res
;
616 if (snd_BUG_ON(!viadev
->tbl_entries
))
618 if (!(inb(VIADEV_REG(viadev
, OFFSET_STATUS
)) & VIA_REG_STAT_ACTIVE
))
621 spin_lock(&chip
->reg_lock
);
622 count
= inl(VIADEV_REG(viadev
, OFFSET_CURR_COUNT
)) & 0xffffff;
623 /* The via686a does not have the current index register,
624 * so we need to calculate the index from CURR_PTR.
626 ptr
= inl(VIADEV_REG(viadev
, OFFSET_CURR_PTR
));
627 if (ptr
<= (unsigned int)viadev
->table
.addr
)
629 else /* CURR_PTR holds the address + 8 */
630 idx
= ((ptr
- (unsigned int)viadev
->table
.addr
) / 8 - 1) %
632 res
= calc_linear_pos(viadev
, idx
, count
);
633 spin_unlock(&chip
->reg_lock
);
635 return bytes_to_frames(substream
->runtime
, res
);
639 * hw_params callback:
640 * allocate the buffer and build up the buffer description table
642 static int snd_via82xx_hw_params(struct snd_pcm_substream
*substream
,
643 struct snd_pcm_hw_params
*hw_params
)
645 struct via82xx_modem
*chip
= snd_pcm_substream_chip(substream
);
646 struct viadev
*viadev
= substream
->runtime
->private_data
;
649 err
= snd_pcm_lib_malloc_pages(substream
, params_buffer_bytes(hw_params
));
652 err
= build_via_table(viadev
, substream
, chip
->pci
,
653 params_periods(hw_params
),
654 params_period_bytes(hw_params
));
658 snd_ac97_write(chip
->ac97
, AC97_LINE1_RATE
, params_rate(hw_params
));
659 snd_ac97_write(chip
->ac97
, AC97_LINE1_LEVEL
, 0);
666 * clean up the buffer description table and release the buffer
668 static int snd_via82xx_hw_free(struct snd_pcm_substream
*substream
)
670 struct via82xx_modem
*chip
= snd_pcm_substream_chip(substream
);
671 struct viadev
*viadev
= substream
->runtime
->private_data
;
673 clean_via_table(viadev
, substream
, chip
->pci
);
674 snd_pcm_lib_free_pages(substream
);
680 * set up the table pointer
682 static void snd_via82xx_set_table_ptr(struct via82xx_modem
*chip
, struct viadev
*viadev
)
684 snd_via82xx_codec_ready(chip
, chip
->ac97_secondary
);
685 outl((u32
)viadev
->table
.addr
, VIADEV_REG(viadev
, OFFSET_TABLE_PTR
));
687 snd_via82xx_codec_ready(chip
, chip
->ac97_secondary
);
691 * prepare callback for playback and capture
693 static int snd_via82xx_pcm_prepare(struct snd_pcm_substream
*substream
)
695 struct via82xx_modem
*chip
= snd_pcm_substream_chip(substream
);
696 struct viadev
*viadev
= substream
->runtime
->private_data
;
698 snd_via82xx_channel_reset(chip
, viadev
);
699 /* this must be set after channel_reset */
700 snd_via82xx_set_table_ptr(chip
, viadev
);
701 outb(VIA_REG_TYPE_AUTOSTART
|VIA_REG_TYPE_INT_EOL
|VIA_REG_TYPE_INT_FLAG
,
702 VIADEV_REG(viadev
, OFFSET_TYPE
));
707 * pcm hardware definition, identical for both playback and capture
709 static struct snd_pcm_hardware snd_via82xx_hw
=
711 .info
= (SNDRV_PCM_INFO_MMAP
| SNDRV_PCM_INFO_INTERLEAVED
|
712 SNDRV_PCM_INFO_BLOCK_TRANSFER
|
713 SNDRV_PCM_INFO_MMAP_VALID
|
714 /* SNDRV_PCM_INFO_RESUME | */
715 SNDRV_PCM_INFO_PAUSE
),
716 .formats
= SNDRV_PCM_FMTBIT_U8
| SNDRV_PCM_FMTBIT_S16_LE
,
717 .rates
= SNDRV_PCM_RATE_8000
| SNDRV_PCM_RATE_16000
| SNDRV_PCM_RATE_KNOT
,
722 .buffer_bytes_max
= 128 * 1024,
723 .period_bytes_min
= 32,
724 .period_bytes_max
= 128 * 1024,
726 .periods_max
= VIA_TABLE_SIZE
/ 2,
732 * open callback skeleton
734 static int snd_via82xx_modem_pcm_open(struct via82xx_modem
*chip
, struct viadev
*viadev
,
735 struct snd_pcm_substream
*substream
)
737 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
739 static unsigned int rates
[] = { 8000, 9600, 12000, 16000 };
740 static struct snd_pcm_hw_constraint_list hw_constraints_rates
= {
741 .count
= ARRAY_SIZE(rates
),
746 runtime
->hw
= snd_via82xx_hw
;
748 if ((err
= snd_pcm_hw_constraint_list(runtime
, 0, SNDRV_PCM_HW_PARAM_RATE
,
749 &hw_constraints_rates
)) < 0)
752 /* we may remove following constaint when we modify table entries
754 if ((err
= snd_pcm_hw_constraint_integer(runtime
, SNDRV_PCM_HW_PARAM_PERIODS
)) < 0)
757 runtime
->private_data
= viadev
;
758 viadev
->substream
= substream
;
765 * open callback for playback
767 static int snd_via82xx_playback_open(struct snd_pcm_substream
*substream
)
769 struct via82xx_modem
*chip
= snd_pcm_substream_chip(substream
);
770 struct viadev
*viadev
= &chip
->devs
[chip
->playback_devno
+ substream
->number
];
772 return snd_via82xx_modem_pcm_open(chip
, viadev
, substream
);
776 * open callback for capture
778 static int snd_via82xx_capture_open(struct snd_pcm_substream
*substream
)
780 struct via82xx_modem
*chip
= snd_pcm_substream_chip(substream
);
781 struct viadev
*viadev
= &chip
->devs
[chip
->capture_devno
+ substream
->pcm
->device
];
783 return snd_via82xx_modem_pcm_open(chip
, viadev
, substream
);
789 static int snd_via82xx_pcm_close(struct snd_pcm_substream
*substream
)
791 struct viadev
*viadev
= substream
->runtime
->private_data
;
793 viadev
->substream
= NULL
;
798 /* via686 playback callbacks */
799 static struct snd_pcm_ops snd_via686_playback_ops
= {
800 .open
= snd_via82xx_playback_open
,
801 .close
= snd_via82xx_pcm_close
,
802 .ioctl
= snd_pcm_lib_ioctl
,
803 .hw_params
= snd_via82xx_hw_params
,
804 .hw_free
= snd_via82xx_hw_free
,
805 .prepare
= snd_via82xx_pcm_prepare
,
806 .trigger
= snd_via82xx_pcm_trigger
,
807 .pointer
= snd_via686_pcm_pointer
,
808 .page
= snd_pcm_sgbuf_ops_page
,
811 /* via686 capture callbacks */
812 static struct snd_pcm_ops snd_via686_capture_ops
= {
813 .open
= snd_via82xx_capture_open
,
814 .close
= snd_via82xx_pcm_close
,
815 .ioctl
= snd_pcm_lib_ioctl
,
816 .hw_params
= snd_via82xx_hw_params
,
817 .hw_free
= snd_via82xx_hw_free
,
818 .prepare
= snd_via82xx_pcm_prepare
,
819 .trigger
= snd_via82xx_pcm_trigger
,
820 .pointer
= snd_via686_pcm_pointer
,
821 .page
= snd_pcm_sgbuf_ops_page
,
825 static void init_viadev(struct via82xx_modem
*chip
, int idx
, unsigned int reg_offset
,
828 chip
->devs
[idx
].reg_offset
= reg_offset
;
829 chip
->devs
[idx
].direction
= direction
;
830 chip
->devs
[idx
].port
= chip
->port
+ reg_offset
;
834 * create a pcm instance for via686a/b
836 static int __devinit
snd_via686_pcm_new(struct via82xx_modem
*chip
)
841 chip
->playback_devno
= 0;
842 chip
->capture_devno
= 1;
844 chip
->intr_mask
= 0x330000; /* FLAGS | EOL for MR, MW */
846 err
= snd_pcm_new(chip
->card
, chip
->card
->shortname
, 0, 1, 1, &pcm
);
849 snd_pcm_set_ops(pcm
, SNDRV_PCM_STREAM_PLAYBACK
, &snd_via686_playback_ops
);
850 snd_pcm_set_ops(pcm
, SNDRV_PCM_STREAM_CAPTURE
, &snd_via686_capture_ops
);
851 pcm
->dev_class
= SNDRV_PCM_CLASS_MODEM
;
852 pcm
->private_data
= chip
;
853 strcpy(pcm
->name
, chip
->card
->shortname
);
855 init_viadev(chip
, 0, VIA_REG_MO_STATUS
, 0);
856 init_viadev(chip
, 1, VIA_REG_MI_STATUS
, 1);
858 if ((err
= snd_pcm_lib_preallocate_pages_for_all(pcm
, SNDRV_DMA_TYPE_DEV_SG
,
859 snd_dma_pci_data(chip
->pci
),
860 64*1024, 128*1024)) < 0)
872 static void snd_via82xx_mixer_free_ac97_bus(struct snd_ac97_bus
*bus
)
874 struct via82xx_modem
*chip
= bus
->private_data
;
875 chip
->ac97_bus
= NULL
;
878 static void snd_via82xx_mixer_free_ac97(struct snd_ac97
*ac97
)
880 struct via82xx_modem
*chip
= ac97
->private_data
;
885 static int __devinit
snd_via82xx_mixer_new(struct via82xx_modem
*chip
)
887 struct snd_ac97_template ac97
;
889 static struct snd_ac97_bus_ops ops
= {
890 .write
= snd_via82xx_codec_write
,
891 .read
= snd_via82xx_codec_read
,
892 .wait
= snd_via82xx_codec_wait
,
895 if ((err
= snd_ac97_bus(chip
->card
, 0, &ops
, chip
, &chip
->ac97_bus
)) < 0)
897 chip
->ac97_bus
->private_free
= snd_via82xx_mixer_free_ac97_bus
;
898 chip
->ac97_bus
->clock
= chip
->ac97_clock
;
900 memset(&ac97
, 0, sizeof(ac97
));
901 ac97
.private_data
= chip
;
902 ac97
.private_free
= snd_via82xx_mixer_free_ac97
;
903 ac97
.pci
= chip
->pci
;
904 ac97
.scaps
= AC97_SCAP_SKIP_AUDIO
| AC97_SCAP_POWER_SAVE
;
905 ac97
.num
= chip
->ac97_secondary
;
907 if ((err
= snd_ac97_mixer(chip
->ac97_bus
, &ac97
, &chip
->ac97
)) < 0)
917 static void snd_via82xx_proc_read(struct snd_info_entry
*entry
, struct snd_info_buffer
*buffer
)
919 struct via82xx_modem
*chip
= entry
->private_data
;
922 snd_iprintf(buffer
, "%s\n\n", chip
->card
->longname
);
923 for (i
= 0; i
< 0xa0; i
+= 4) {
924 snd_iprintf(buffer
, "%02x: %08x\n", i
, inl(chip
->port
+ i
));
928 static void __devinit
snd_via82xx_proc_init(struct via82xx_modem
*chip
)
930 struct snd_info_entry
*entry
;
932 if (! snd_card_proc_new(chip
->card
, "via82xx", &entry
))
933 snd_info_set_text_ops(entry
, chip
, snd_via82xx_proc_read
);
940 static int snd_via82xx_chip_init(struct via82xx_modem
*chip
)
943 unsigned long end_time
;
946 pci_read_config_byte(chip
->pci
, VIA_MC97_CTRL
, &pval
);
947 if((pval
& VIA_MC97_CTRL_INIT
) != VIA_MC97_CTRL_INIT
) {
948 pci_write_config_byte(chip
->pci
, 0x44, pval
|VIA_MC97_CTRL_INIT
);
952 pci_read_config_byte(chip
->pci
, VIA_ACLINK_STAT
, &pval
);
953 if (! (pval
& VIA_ACLINK_C00_READY
)) { /* codec not ready? */
954 /* deassert ACLink reset, force SYNC */
955 pci_write_config_byte(chip
->pci
, VIA_ACLINK_CTRL
,
956 VIA_ACLINK_CTRL_ENABLE
|
957 VIA_ACLINK_CTRL_RESET
|
958 VIA_ACLINK_CTRL_SYNC
);
960 pci_write_config_byte(chip
->pci
, VIA_ACLINK_CTRL
, 0x00);
962 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
963 pci_write_config_byte(chip
->pci
, VIA_ACLINK_CTRL
, VIA_ACLINK_CTRL_INIT
);
967 pci_read_config_byte(chip
->pci
, VIA_ACLINK_CTRL
, &pval
);
968 if ((pval
& VIA_ACLINK_CTRL_INIT
) != VIA_ACLINK_CTRL_INIT
) {
969 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
970 pci_write_config_byte(chip
->pci
, VIA_ACLINK_CTRL
, VIA_ACLINK_CTRL_INIT
);
974 /* wait until codec ready */
975 end_time
= jiffies
+ msecs_to_jiffies(750);
977 pci_read_config_byte(chip
->pci
, VIA_ACLINK_STAT
, &pval
);
978 if (pval
& VIA_ACLINK_C00_READY
) /* primary codec ready */
980 schedule_timeout_uninterruptible(1);
981 } while (time_before(jiffies
, end_time
));
983 if ((val
= snd_via82xx_codec_xread(chip
)) & VIA_REG_AC97_BUSY
)
984 snd_printk(KERN_ERR
"AC'97 codec is not ready [0x%x]\n", val
);
986 snd_via82xx_codec_xwrite(chip
, VIA_REG_AC97_READ
|
987 VIA_REG_AC97_SECONDARY_VALID
|
988 (VIA_REG_AC97_CODEC_ID_SECONDARY
<< VIA_REG_AC97_CODEC_ID_SHIFT
));
989 end_time
= jiffies
+ msecs_to_jiffies(750);
990 snd_via82xx_codec_xwrite(chip
, VIA_REG_AC97_READ
|
991 VIA_REG_AC97_SECONDARY_VALID
|
992 (VIA_REG_AC97_CODEC_ID_SECONDARY
<< VIA_REG_AC97_CODEC_ID_SHIFT
));
994 if ((val
= snd_via82xx_codec_xread(chip
)) & VIA_REG_AC97_SECONDARY_VALID
) {
995 chip
->ac97_secondary
= 1;
998 schedule_timeout_uninterruptible(1);
999 } while (time_before(jiffies
, end_time
));
1000 /* This is ok, the most of motherboards have only one codec */
1004 /* route FM trap to IRQ, disable FM trap */
1005 // pci_write_config_byte(chip->pci, VIA_FM_NMI_CTRL, 0);
1006 /* disable all GPI interrupts */
1007 outl(0, VIAREG(chip
, GPI_INTR
));
1016 static int snd_via82xx_suspend(struct pci_dev
*pci
, pm_message_t state
)
1018 struct snd_card
*card
= pci_get_drvdata(pci
);
1019 struct via82xx_modem
*chip
= card
->private_data
;
1022 snd_power_change_state(card
, SNDRV_CTL_POWER_D3hot
);
1023 for (i
= 0; i
< 2; i
++)
1024 snd_pcm_suspend_all(chip
->pcms
[i
]);
1025 for (i
= 0; i
< chip
->num_devs
; i
++)
1026 snd_via82xx_channel_reset(chip
, &chip
->devs
[i
]);
1027 synchronize_irq(chip
->irq
);
1028 snd_ac97_suspend(chip
->ac97
);
1030 pci_disable_device(pci
);
1031 pci_save_state(pci
);
1032 pci_set_power_state(pci
, pci_choose_state(pci
, state
));
1036 static int snd_via82xx_resume(struct pci_dev
*pci
)
1038 struct snd_card
*card
= pci_get_drvdata(pci
);
1039 struct via82xx_modem
*chip
= card
->private_data
;
1042 pci_set_power_state(pci
, PCI_D0
);
1043 pci_restore_state(pci
);
1044 if (pci_enable_device(pci
) < 0) {
1045 printk(KERN_ERR
"via82xx-modem: pci_enable_device failed, "
1046 "disabling device\n");
1047 snd_card_disconnect(card
);
1050 pci_set_master(pci
);
1052 snd_via82xx_chip_init(chip
);
1054 snd_ac97_resume(chip
->ac97
);
1056 for (i
= 0; i
< chip
->num_devs
; i
++)
1057 snd_via82xx_channel_reset(chip
, &chip
->devs
[i
]);
1059 snd_power_change_state(card
, SNDRV_CTL_POWER_D0
);
1062 #endif /* CONFIG_PM */
1064 static int snd_via82xx_free(struct via82xx_modem
*chip
)
1070 /* disable interrupts */
1071 for (i
= 0; i
< chip
->num_devs
; i
++)
1072 snd_via82xx_channel_reset(chip
, &chip
->devs
[i
]);
1076 free_irq(chip
->irq
, chip
);
1077 pci_release_regions(chip
->pci
);
1078 pci_disable_device(chip
->pci
);
1083 static int snd_via82xx_dev_free(struct snd_device
*device
)
1085 struct via82xx_modem
*chip
= device
->device_data
;
1086 return snd_via82xx_free(chip
);
1089 static int __devinit
snd_via82xx_create(struct snd_card
*card
,
1090 struct pci_dev
*pci
,
1093 unsigned int ac97_clock
,
1094 struct via82xx_modem
** r_via
)
1096 struct via82xx_modem
*chip
;
1098 static struct snd_device_ops ops
= {
1099 .dev_free
= snd_via82xx_dev_free
,
1102 if ((err
= pci_enable_device(pci
)) < 0)
1105 if ((chip
= kzalloc(sizeof(*chip
), GFP_KERNEL
)) == NULL
) {
1106 pci_disable_device(pci
);
1110 spin_lock_init(&chip
->reg_lock
);
1115 if ((err
= pci_request_regions(pci
, card
->driver
)) < 0) {
1117 pci_disable_device(pci
);
1120 chip
->port
= pci_resource_start(pci
, 0);
1121 if (request_irq(pci
->irq
, snd_via82xx_interrupt
, IRQF_SHARED
,
1122 card
->driver
, chip
)) {
1123 snd_printk(KERN_ERR
"unable to grab IRQ %d\n", pci
->irq
);
1124 snd_via82xx_free(chip
);
1127 chip
->irq
= pci
->irq
;
1128 if (ac97_clock
>= 8000 && ac97_clock
<= 48000)
1129 chip
->ac97_clock
= ac97_clock
;
1130 synchronize_irq(chip
->irq
);
1132 if ((err
= snd_via82xx_chip_init(chip
)) < 0) {
1133 snd_via82xx_free(chip
);
1137 if ((err
= snd_device_new(card
, SNDRV_DEV_LOWLEVEL
, chip
, &ops
)) < 0) {
1138 snd_via82xx_free(chip
);
1142 /* The 8233 ac97 controller does not implement the master bit
1143 * in the pci command register. IMHO this is a violation of the PCI spec.
1144 * We call pci_set_master here because it does not hurt. */
1145 pci_set_master(pci
);
1147 snd_card_set_dev(card
, &pci
->dev
);
1154 static int __devinit
snd_via82xx_probe(struct pci_dev
*pci
,
1155 const struct pci_device_id
*pci_id
)
1157 struct snd_card
*card
;
1158 struct via82xx_modem
*chip
;
1159 int chip_type
= 0, card_type
;
1163 err
= snd_card_create(index
, id
, THIS_MODULE
, 0, &card
);
1167 card_type
= pci_id
->driver_data
;
1168 switch (card_type
) {
1169 case TYPE_CARD_VIA82XX_MODEM
:
1170 strcpy(card
->driver
, "VIA82XX-MODEM");
1171 sprintf(card
->shortname
, "VIA 82XX modem");
1174 snd_printk(KERN_ERR
"invalid card type %d\n", card_type
);
1179 if ((err
= snd_via82xx_create(card
, pci
, chip_type
, pci
->revision
,
1180 ac97_clock
, &chip
)) < 0)
1182 card
->private_data
= chip
;
1183 if ((err
= snd_via82xx_mixer_new(chip
)) < 0)
1186 if ((err
= snd_via686_pcm_new(chip
)) < 0 )
1189 /* disable interrupts */
1190 for (i
= 0; i
< chip
->num_devs
; i
++)
1191 snd_via82xx_channel_reset(chip
, &chip
->devs
[i
]);
1193 sprintf(card
->longname
, "%s at 0x%lx, irq %d",
1194 card
->shortname
, chip
->port
, chip
->irq
);
1196 snd_via82xx_proc_init(chip
);
1198 if ((err
= snd_card_register(card
)) < 0) {
1199 snd_card_free(card
);
1202 pci_set_drvdata(pci
, card
);
1206 snd_card_free(card
);
1210 static void __devexit
snd_via82xx_remove(struct pci_dev
*pci
)
1212 snd_card_free(pci_get_drvdata(pci
));
1213 pci_set_drvdata(pci
, NULL
);
1216 static struct pci_driver driver
= {
1217 .name
= "VIA 82xx Modem",
1218 .id_table
= snd_via82xx_modem_ids
,
1219 .probe
= snd_via82xx_probe
,
1220 .remove
= __devexit_p(snd_via82xx_remove
),
1222 .suspend
= snd_via82xx_suspend
,
1223 .resume
= snd_via82xx_resume
,
1227 static int __init
alsa_card_via82xx_init(void)
1229 return pci_register_driver(&driver
);
1232 static void __exit
alsa_card_via82xx_exit(void)
1234 pci_unregister_driver(&driver
);
1237 module_init(alsa_card_via82xx_init
)
1238 module_exit(alsa_card_via82xx_exit
)