2 * ALSA modem driver for VIA VT82xx (South Bridge)
4 * VT82C686A/B/C, VT8233A/C, VT8235
6 * Copyright (c) 2000 Jaroslav Kysela <perex@suse.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@smlink.com>
30 * Modified from original audio driver 'via82xx.c' to support AC97
34 #include <sound/driver.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/moduleparam.h>
42 #include <sound/core.h>
43 #include <sound/pcm.h>
44 #include <sound/pcm_params.h>
45 #include <sound/info.h>
46 #include <sound/ac97_codec.h>
47 #include <sound/initval.h>
53 MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
54 MODULE_DESCRIPTION("VIA VT82xx modem");
55 MODULE_LICENSE("GPL");
56 MODULE_SUPPORTED_DEVICE("{{VIA,VT82C686A/B/C modem,pci}}");
58 static int index
= -2; /* Exclude the first card */
59 static char *id
= SNDRV_DEFAULT_STR1
; /* ID for this card */
60 static int ac97_clock
= 48000;
62 module_param(index
, int, 0444);
63 MODULE_PARM_DESC(index
, "Index value for VIA 82xx bridge.");
64 module_param(id
, charp
, 0444);
65 MODULE_PARM_DESC(id
, "ID string for VIA 82xx bridge.");
66 module_param(ac97_clock
, int, 0444);
67 MODULE_PARM_DESC(ac97_clock
, "AC'97 codec clock (default 48000Hz).");
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 /* FIXME: it's 0x40 in the datasheet! */
190 #define VIA_FUNC_MIDI_IRQMASK 0x40 /* FIXME: not documented! */
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)
205 typedef struct _snd_via82xx_modem via82xx_t
;
206 typedef struct via_dev viadev_t
;
212 struct snd_via_sg_table
{
217 #define VIA_TABLE_SIZE 255
220 unsigned int reg_offset
;
222 int direction
; /* playback = 0, capture = 1 */
223 snd_pcm_substream_t
*substream
;
225 unsigned int tbl_entries
; /* # descriptors */
226 struct snd_dma_buffer table
;
227 struct snd_via_sg_table
*idx_table
;
228 /* for recovery from the unexpected pointer */
229 unsigned int lastpos
;
230 unsigned int bufsize
;
231 unsigned int bufsize2
;
234 enum { TYPE_CARD_VIA82XX_MODEM
= 1 };
236 #define VIA_MAX_MODEM_DEVS 2
238 struct _snd_via82xx_modem
{
243 unsigned int intr_mask
; /* SGD_SHADOW mask to check interrupts */
248 unsigned int num_devs
;
249 unsigned int playback_devno
, capture_devno
;
250 viadev_t devs
[VIA_MAX_MODEM_DEVS
];
254 ac97_bus_t
*ac97_bus
;
256 unsigned int ac97_clock
;
257 unsigned int ac97_secondary
; /* secondary AC'97 codec is present */
260 snd_info_entry_t
*proc_entry
;
263 static struct pci_device_id snd_via82xx_modem_ids
[] = {
264 { 0x1106, 0x3068, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, TYPE_CARD_VIA82XX_MODEM
, },
268 MODULE_DEVICE_TABLE(pci
, snd_via82xx_modem_ids
);
274 * allocate and initialize the descriptor buffers
275 * periods = number of periods
276 * fragsize = period size in bytes
278 static int build_via_table(viadev_t
*dev
, snd_pcm_substream_t
*substream
,
280 unsigned int periods
, unsigned int fragsize
)
282 unsigned int i
, idx
, ofs
, rest
;
283 via82xx_t
*chip
= snd_pcm_substream_chip(substream
);
284 struct snd_sg_buf
*sgbuf
= snd_pcm_substream_sgbuf(substream
);
286 if (dev
->table
.area
== NULL
) {
287 /* the start of each lists must be aligned to 8 bytes,
288 * but the kernel pages are much bigger, so we don't care
290 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV
, snd_dma_pci_data(chip
->pci
),
291 PAGE_ALIGN(VIA_TABLE_SIZE
* 2 * 8),
295 if (! dev
->idx_table
) {
296 dev
->idx_table
= kmalloc(sizeof(*dev
->idx_table
) * VIA_TABLE_SIZE
, GFP_KERNEL
);
297 if (! dev
->idx_table
)
301 /* fill the entries */
304 for (i
= 0; i
< periods
; i
++) {
306 /* fill descriptors for a period.
307 * a period can be split to several descriptors if it's
308 * over page boundary.
314 if (idx
>= VIA_TABLE_SIZE
) {
315 snd_printk(KERN_ERR
"via82xx: too much table size!\n");
318 ((u32
*)dev
->table
.area
)[idx
<< 1] = cpu_to_le32((u32
)snd_pcm_sgbuf_get_addr(sgbuf
, ofs
));
319 r
= PAGE_SIZE
- (ofs
% PAGE_SIZE
);
324 if (i
== periods
- 1)
325 flag
= VIA_TBL_BIT_EOL
; /* buffer boundary */
327 flag
= VIA_TBL_BIT_FLAG
; /* period boundary */
329 flag
= 0; /* period continues to the next */
330 // printk("via: tbl %d: at %d size %d (rest %d)\n", idx, ofs, r, rest);
331 ((u32
*)dev
->table
.area
)[(idx
<<1) + 1] = cpu_to_le32(r
| flag
);
332 dev
->idx_table
[idx
].offset
= ofs
;
333 dev
->idx_table
[idx
].size
= r
;
338 dev
->tbl_entries
= idx
;
339 dev
->bufsize
= periods
* fragsize
;
340 dev
->bufsize2
= dev
->bufsize
/ 2;
345 static int clean_via_table(viadev_t
*dev
, snd_pcm_substream_t
*substream
,
348 if (dev
->table
.area
) {
349 snd_dma_free_pages(&dev
->table
);
350 dev
->table
.area
= NULL
;
352 kfree(dev
->idx_table
);
353 dev
->idx_table
= NULL
;
361 static inline unsigned int snd_via82xx_codec_xread(via82xx_t
*chip
)
363 return inl(VIAREG(chip
, AC97
));
366 static inline void snd_via82xx_codec_xwrite(via82xx_t
*chip
, unsigned int val
)
368 outl(val
, VIAREG(chip
, AC97
));
371 static int snd_via82xx_codec_ready(via82xx_t
*chip
, int secondary
)
373 unsigned int timeout
= 1000; /* 1ms */
376 while (timeout
-- > 0) {
378 if (!((val
= snd_via82xx_codec_xread(chip
)) & VIA_REG_AC97_BUSY
))
381 snd_printk(KERN_ERR
"codec_ready: codec %i is not ready [0x%x]\n", secondary
, snd_via82xx_codec_xread(chip
));
385 static int snd_via82xx_codec_valid(via82xx_t
*chip
, int secondary
)
387 unsigned int timeout
= 1000; /* 1ms */
388 unsigned int val
, val1
;
389 unsigned int stat
= !secondary
? VIA_REG_AC97_PRIMARY_VALID
:
390 VIA_REG_AC97_SECONDARY_VALID
;
392 while (timeout
-- > 0) {
393 val
= snd_via82xx_codec_xread(chip
);
394 val1
= val
& (VIA_REG_AC97_BUSY
| stat
);
402 static void snd_via82xx_codec_wait(ac97_t
*ac97
)
404 via82xx_t
*chip
= ac97
->private_data
;
406 err
= snd_via82xx_codec_ready(chip
, ac97
->num
);
407 /* here we need to wait fairly for long time.. */
411 static void snd_via82xx_codec_write(ac97_t
*ac97
,
415 via82xx_t
*chip
= ac97
->private_data
;
417 if(reg
== AC97_GPIO_STATUS
) {
418 outl(val
, VIAREG(chip
, GPI_STATUS
));
421 xval
= !ac97
->num
? VIA_REG_AC97_CODEC_ID_PRIMARY
: VIA_REG_AC97_CODEC_ID_SECONDARY
;
422 xval
<<= VIA_REG_AC97_CODEC_ID_SHIFT
;
423 xval
|= reg
<< VIA_REG_AC97_CMD_SHIFT
;
424 xval
|= val
<< VIA_REG_AC97_DATA_SHIFT
;
425 snd_via82xx_codec_xwrite(chip
, xval
);
426 snd_via82xx_codec_ready(chip
, ac97
->num
);
429 static unsigned short snd_via82xx_codec_read(ac97_t
*ac97
, unsigned short reg
)
431 via82xx_t
*chip
= ac97
->private_data
;
432 unsigned int xval
, val
= 0xffff;
435 xval
= ac97
->num
<< VIA_REG_AC97_CODEC_ID_SHIFT
;
436 xval
|= ac97
->num
? VIA_REG_AC97_SECONDARY_VALID
: VIA_REG_AC97_PRIMARY_VALID
;
437 xval
|= VIA_REG_AC97_READ
;
438 xval
|= (reg
& 0x7f) << VIA_REG_AC97_CMD_SHIFT
;
441 snd_printk(KERN_ERR
"codec_read: codec %i is not valid [0x%x]\n", ac97
->num
, snd_via82xx_codec_xread(chip
));
444 snd_via82xx_codec_xwrite(chip
, xval
);
446 if (snd_via82xx_codec_valid(chip
, ac97
->num
) >= 0) {
448 val
= snd_via82xx_codec_xread(chip
);
455 static void snd_via82xx_channel_reset(via82xx_t
*chip
, viadev_t
*viadev
)
457 outb(VIA_REG_CTRL_PAUSE
| VIA_REG_CTRL_TERMINATE
| VIA_REG_CTRL_RESET
,
458 VIADEV_REG(viadev
, OFFSET_CONTROL
));
459 inb(VIADEV_REG(viadev
, OFFSET_CONTROL
));
461 /* disable interrupts */
462 outb(0x00, VIADEV_REG(viadev
, OFFSET_CONTROL
));
463 /* clear interrupts */
464 outb(0x03, VIADEV_REG(viadev
, OFFSET_STATUS
));
465 outb(0x00, VIADEV_REG(viadev
, OFFSET_TYPE
)); /* for via686 */
466 // outl(0, VIADEV_REG(viadev, OFFSET_CURR_PTR));
475 static irqreturn_t
snd_via82xx_interrupt(int irq
, void *dev_id
, struct pt_regs
*regs
)
477 via82xx_t
*chip
= dev_id
;
481 status
= inl(VIAREG(chip
, SGD_SHADOW
));
482 if (! (status
& chip
->intr_mask
)) {
487 /* check status for each stream */
488 spin_lock(&chip
->reg_lock
);
489 for (i
= 0; i
< chip
->num_devs
; i
++) {
490 viadev_t
*viadev
= &chip
->devs
[i
];
491 unsigned char c_status
= inb(VIADEV_REG(viadev
, OFFSET_STATUS
));
492 c_status
&= (VIA_REG_STAT_EOL
|VIA_REG_STAT_FLAG
|VIA_REG_STAT_STOPPED
);
495 if (viadev
->substream
&& viadev
->running
) {
496 spin_unlock(&chip
->reg_lock
);
497 snd_pcm_period_elapsed(viadev
->substream
);
498 spin_lock(&chip
->reg_lock
);
500 outb(c_status
, VIADEV_REG(viadev
, OFFSET_STATUS
)); /* ack */
502 spin_unlock(&chip
->reg_lock
);
513 static int snd_via82xx_pcm_trigger(snd_pcm_substream_t
* substream
, int cmd
)
515 via82xx_t
*chip
= snd_pcm_substream_chip(substream
);
516 viadev_t
*viadev
= (viadev_t
*)substream
->runtime
->private_data
;
517 unsigned char val
= 0;
520 case SNDRV_PCM_TRIGGER_START
:
521 case SNDRV_PCM_TRIGGER_SUSPEND
:
522 val
|= VIA_REG_CTRL_START
;
525 case SNDRV_PCM_TRIGGER_STOP
:
526 val
= VIA_REG_CTRL_TERMINATE
;
529 case SNDRV_PCM_TRIGGER_PAUSE_PUSH
:
530 val
|= VIA_REG_CTRL_PAUSE
;
533 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE
:
539 outb(val
, VIADEV_REG(viadev
, OFFSET_CONTROL
));
540 if (cmd
== SNDRV_PCM_TRIGGER_STOP
)
541 snd_via82xx_channel_reset(chip
, viadev
);
550 * calculate the linear position at the given sg-buffer index and the rest count
553 #define check_invalid_pos(viadev,pos) \
554 ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 || viadev->lastpos < viadev->bufsize2))
556 static inline unsigned int calc_linear_pos(viadev_t
*viadev
, unsigned int idx
, unsigned int count
)
558 unsigned int size
, res
;
560 size
= viadev
->idx_table
[idx
].size
;
561 res
= viadev
->idx_table
[idx
].offset
+ size
- count
;
563 /* check the validity of the calculated position */
565 snd_printd(KERN_ERR
"invalid via82xx_cur_ptr (size = %d, count = %d)\n", (int)size
, (int)count
);
566 res
= viadev
->lastpos
;
567 } else if (check_invalid_pos(viadev
, res
)) {
569 printk("fail: idx = %i/%i, lastpos = 0x%x, bufsize2 = 0x%x, offsize = 0x%x, size = 0x%x, count = 0x%x\n", idx
, viadev
->tbl_entries
, viadev
->lastpos
, viadev
->bufsize2
, viadev
->idx_table
[idx
].offset
, viadev
->idx_table
[idx
].size
, count
);
571 if (count
&& size
< count
) {
572 snd_printd(KERN_ERR
"invalid via82xx_cur_ptr, using last valid pointer\n");
573 res
= viadev
->lastpos
;
576 /* bogus count 0 on the DMA boundary? */
577 res
= viadev
->idx_table
[idx
].offset
;
579 /* count register returns full size when end of buffer is reached */
580 res
= viadev
->idx_table
[idx
].offset
+ size
;
581 if (check_invalid_pos(viadev
, res
)) {
582 snd_printd(KERN_ERR
"invalid via82xx_cur_ptr (2), using last valid pointer\n");
583 res
= viadev
->lastpos
;
587 viadev
->lastpos
= res
; /* remember the last position */
588 if (res
>= viadev
->bufsize
)
589 res
-= viadev
->bufsize
;
594 * get the current pointer on via686
596 static snd_pcm_uframes_t
snd_via686_pcm_pointer(snd_pcm_substream_t
*substream
)
598 via82xx_t
*chip
= snd_pcm_substream_chip(substream
);
599 viadev_t
*viadev
= (viadev_t
*)substream
->runtime
->private_data
;
600 unsigned int idx
, ptr
, count
, res
;
602 snd_assert(viadev
->tbl_entries
, return 0);
603 if (!(inb(VIADEV_REG(viadev
, OFFSET_STATUS
)) & VIA_REG_STAT_ACTIVE
))
606 spin_lock(&chip
->reg_lock
);
607 count
= inl(VIADEV_REG(viadev
, OFFSET_CURR_COUNT
)) & 0xffffff;
608 /* The via686a does not have the current index register,
609 * so we need to calculate the index from CURR_PTR.
611 ptr
= inl(VIADEV_REG(viadev
, OFFSET_CURR_PTR
));
612 if (ptr
<= (unsigned int)viadev
->table
.addr
)
614 else /* CURR_PTR holds the address + 8 */
615 idx
= ((ptr
- (unsigned int)viadev
->table
.addr
) / 8 - 1) % viadev
->tbl_entries
;
616 res
= calc_linear_pos(viadev
, idx
, count
);
617 spin_unlock(&chip
->reg_lock
);
619 return bytes_to_frames(substream
->runtime
, res
);
623 * hw_params callback:
624 * allocate the buffer and build up the buffer description table
626 static int snd_via82xx_hw_params(snd_pcm_substream_t
* substream
,
627 snd_pcm_hw_params_t
* hw_params
)
629 via82xx_t
*chip
= snd_pcm_substream_chip(substream
);
630 viadev_t
*viadev
= (viadev_t
*)substream
->runtime
->private_data
;
633 err
= snd_pcm_lib_malloc_pages(substream
, params_buffer_bytes(hw_params
));
636 err
= build_via_table(viadev
, substream
, chip
->pci
,
637 params_periods(hw_params
),
638 params_period_bytes(hw_params
));
642 snd_ac97_write(chip
->ac97
, AC97_LINE1_RATE
, params_rate(hw_params
));
643 snd_ac97_write(chip
->ac97
, AC97_LINE1_LEVEL
, 0);
650 * clean up the buffer description table and release the buffer
652 static int snd_via82xx_hw_free(snd_pcm_substream_t
* substream
)
654 via82xx_t
*chip
= snd_pcm_substream_chip(substream
);
655 viadev_t
*viadev
= (viadev_t
*)substream
->runtime
->private_data
;
657 clean_via_table(viadev
, substream
, chip
->pci
);
658 snd_pcm_lib_free_pages(substream
);
664 * set up the table pointer
666 static void snd_via82xx_set_table_ptr(via82xx_t
*chip
, viadev_t
*viadev
)
668 snd_via82xx_codec_ready(chip
, chip
->ac97_secondary
);
669 outl((u32
)viadev
->table
.addr
, VIADEV_REG(viadev
, OFFSET_TABLE_PTR
));
671 snd_via82xx_codec_ready(chip
, chip
->ac97_secondary
);
675 * prepare callback for playback and capture
677 static int snd_via82xx_pcm_prepare(snd_pcm_substream_t
*substream
)
679 via82xx_t
*chip
= snd_pcm_substream_chip(substream
);
680 viadev_t
*viadev
= (viadev_t
*)substream
->runtime
->private_data
;
682 snd_via82xx_channel_reset(chip
, viadev
);
683 /* this must be set after channel_reset */
684 snd_via82xx_set_table_ptr(chip
, viadev
);
685 outb(VIA_REG_TYPE_AUTOSTART
|VIA_REG_TYPE_INT_EOL
|VIA_REG_TYPE_INT_FLAG
,
686 VIADEV_REG(viadev
, OFFSET_TYPE
));
691 * pcm hardware definition, identical for both playback and capture
693 static snd_pcm_hardware_t snd_via82xx_hw
=
695 .info
= (SNDRV_PCM_INFO_MMAP
| SNDRV_PCM_INFO_INTERLEAVED
|
696 SNDRV_PCM_INFO_BLOCK_TRANSFER
|
697 SNDRV_PCM_INFO_MMAP_VALID
|
698 /* SNDRV_PCM_INFO_RESUME | */
699 SNDRV_PCM_INFO_PAUSE
),
700 .formats
= SNDRV_PCM_FMTBIT_U8
| SNDRV_PCM_FMTBIT_S16_LE
,
701 .rates
= SNDRV_PCM_RATE_8000
| SNDRV_PCM_RATE_16000
| SNDRV_PCM_RATE_KNOT
,
706 .buffer_bytes_max
= 128 * 1024,
707 .period_bytes_min
= 32,
708 .period_bytes_max
= 128 * 1024,
710 .periods_max
= VIA_TABLE_SIZE
/ 2,
716 * open callback skeleton
718 static int snd_via82xx_modem_pcm_open(via82xx_t
*chip
, viadev_t
*viadev
, snd_pcm_substream_t
* substream
)
720 snd_pcm_runtime_t
*runtime
= substream
->runtime
;
722 static unsigned int rates
[] = { 8000, 9600, 12000, 16000 };
723 static snd_pcm_hw_constraint_list_t hw_constraints_rates
= {
724 .count
= ARRAY_SIZE(rates
),
729 runtime
->hw
= snd_via82xx_hw
;
731 if ((err
= snd_pcm_hw_constraint_list(runtime
, 0, SNDRV_PCM_HW_PARAM_RATE
, &hw_constraints_rates
)) < 0)
734 /* we may remove following constaint when we modify table entries
736 if ((err
= snd_pcm_hw_constraint_integer(runtime
, SNDRV_PCM_HW_PARAM_PERIODS
)) < 0)
739 runtime
->private_data
= viadev
;
740 viadev
->substream
= substream
;
747 * open callback for playback
749 static int snd_via82xx_playback_open(snd_pcm_substream_t
* substream
)
751 via82xx_t
*chip
= snd_pcm_substream_chip(substream
);
752 viadev_t
*viadev
= &chip
->devs
[chip
->playback_devno
+ substream
->number
];
754 return snd_via82xx_modem_pcm_open(chip
, viadev
, substream
);
758 * open callback for capture
760 static int snd_via82xx_capture_open(snd_pcm_substream_t
* substream
)
762 via82xx_t
*chip
= snd_pcm_substream_chip(substream
);
763 viadev_t
*viadev
= &chip
->devs
[chip
->capture_devno
+ substream
->pcm
->device
];
765 return snd_via82xx_modem_pcm_open(chip
, viadev
, substream
);
771 static int snd_via82xx_pcm_close(snd_pcm_substream_t
* substream
)
773 viadev_t
*viadev
= (viadev_t
*)substream
->runtime
->private_data
;
775 viadev
->substream
= NULL
;
780 /* via686 playback callbacks */
781 static snd_pcm_ops_t snd_via686_playback_ops
= {
782 .open
= snd_via82xx_playback_open
,
783 .close
= snd_via82xx_pcm_close
,
784 .ioctl
= snd_pcm_lib_ioctl
,
785 .hw_params
= snd_via82xx_hw_params
,
786 .hw_free
= snd_via82xx_hw_free
,
787 .prepare
= snd_via82xx_pcm_prepare
,
788 .trigger
= snd_via82xx_pcm_trigger
,
789 .pointer
= snd_via686_pcm_pointer
,
790 .page
= snd_pcm_sgbuf_ops_page
,
793 /* via686 capture callbacks */
794 static snd_pcm_ops_t snd_via686_capture_ops
= {
795 .open
= snd_via82xx_capture_open
,
796 .close
= snd_via82xx_pcm_close
,
797 .ioctl
= snd_pcm_lib_ioctl
,
798 .hw_params
= snd_via82xx_hw_params
,
799 .hw_free
= snd_via82xx_hw_free
,
800 .prepare
= snd_via82xx_pcm_prepare
,
801 .trigger
= snd_via82xx_pcm_trigger
,
802 .pointer
= snd_via686_pcm_pointer
,
803 .page
= snd_pcm_sgbuf_ops_page
,
807 static void init_viadev(via82xx_t
*chip
, int idx
, unsigned int reg_offset
, int direction
)
809 chip
->devs
[idx
].reg_offset
= reg_offset
;
810 chip
->devs
[idx
].direction
= direction
;
811 chip
->devs
[idx
].port
= chip
->port
+ reg_offset
;
815 * create a pcm instance for via686a/b
817 static int __devinit
snd_via686_pcm_new(via82xx_t
*chip
)
822 chip
->playback_devno
= 0;
823 chip
->capture_devno
= 1;
825 chip
->intr_mask
= 0x330000; /* FLAGS | EOL for MR, MW */
827 err
= snd_pcm_new(chip
->card
, chip
->card
->shortname
, 0, 1, 1, &pcm
);
830 snd_pcm_set_ops(pcm
, SNDRV_PCM_STREAM_PLAYBACK
, &snd_via686_playback_ops
);
831 snd_pcm_set_ops(pcm
, SNDRV_PCM_STREAM_CAPTURE
, &snd_via686_capture_ops
);
832 pcm
->dev_class
= SNDRV_PCM_CLASS_MODEM
;
833 pcm
->private_data
= chip
;
834 strcpy(pcm
->name
, chip
->card
->shortname
);
836 init_viadev(chip
, 0, VIA_REG_MO_STATUS
, 0);
837 init_viadev(chip
, 1, VIA_REG_MI_STATUS
, 1);
839 if ((err
= snd_pcm_lib_preallocate_pages_for_all(pcm
, SNDRV_DMA_TYPE_DEV_SG
,
840 snd_dma_pci_data(chip
->pci
), 64*1024, 128*1024)) < 0)
852 static void snd_via82xx_mixer_free_ac97_bus(ac97_bus_t
*bus
)
854 via82xx_t
*chip
= bus
->private_data
;
855 chip
->ac97_bus
= NULL
;
858 static void snd_via82xx_mixer_free_ac97(ac97_t
*ac97
)
860 via82xx_t
*chip
= ac97
->private_data
;
865 static int __devinit
snd_via82xx_mixer_new(via82xx_t
*chip
)
867 ac97_template_t ac97
;
869 static ac97_bus_ops_t ops
= {
870 .write
= snd_via82xx_codec_write
,
871 .read
= snd_via82xx_codec_read
,
872 .wait
= snd_via82xx_codec_wait
,
875 if ((err
= snd_ac97_bus(chip
->card
, 0, &ops
, chip
, &chip
->ac97_bus
)) < 0)
877 chip
->ac97_bus
->private_free
= snd_via82xx_mixer_free_ac97_bus
;
878 chip
->ac97_bus
->clock
= chip
->ac97_clock
;
880 memset(&ac97
, 0, sizeof(ac97
));
881 ac97
.private_data
= chip
;
882 ac97
.private_free
= snd_via82xx_mixer_free_ac97
;
883 ac97
.pci
= chip
->pci
;
884 ac97
.scaps
= AC97_SCAP_SKIP_AUDIO
;
885 ac97
.num
= chip
->ac97_secondary
;
887 if ((err
= snd_ac97_mixer(chip
->ac97_bus
, &ac97
, &chip
->ac97
)) < 0)
897 static void snd_via82xx_proc_read(snd_info_entry_t
*entry
, snd_info_buffer_t
*buffer
)
899 via82xx_t
*chip
= entry
->private_data
;
902 snd_iprintf(buffer
, "%s\n\n", chip
->card
->longname
);
903 for (i
= 0; i
< 0xa0; i
+= 4) {
904 snd_iprintf(buffer
, "%02x: %08x\n", i
, inl(chip
->port
+ i
));
908 static void __devinit
snd_via82xx_proc_init(via82xx_t
*chip
)
910 snd_info_entry_t
*entry
;
912 if (! snd_card_proc_new(chip
->card
, "via82xx", &entry
))
913 snd_info_set_text_ops(entry
, chip
, 1024, snd_via82xx_proc_read
);
920 static int snd_via82xx_chip_init(via82xx_t
*chip
)
923 unsigned long end_time
;
926 pci_read_config_byte(chip
->pci
, VIA_MC97_CTRL
, &pval
);
927 if((pval
& VIA_MC97_CTRL_INIT
) != VIA_MC97_CTRL_INIT
) {
928 pci_write_config_byte(chip
->pci
, 0x44, pval
|VIA_MC97_CTRL_INIT
);
932 pci_read_config_byte(chip
->pci
, VIA_ACLINK_STAT
, &pval
);
933 if (! (pval
& VIA_ACLINK_C00_READY
)) { /* codec not ready? */
934 /* deassert ACLink reset, force SYNC */
935 pci_write_config_byte(chip
->pci
, VIA_ACLINK_CTRL
,
936 VIA_ACLINK_CTRL_ENABLE
|
937 VIA_ACLINK_CTRL_RESET
|
938 VIA_ACLINK_CTRL_SYNC
);
940 #if 1 /* FIXME: should we do full reset here for all chip models? */
941 pci_write_config_byte(chip
->pci
, VIA_ACLINK_CTRL
, 0x00);
944 /* deassert ACLink reset, force SYNC (warm AC'97 reset) */
945 pci_write_config_byte(chip
->pci
, VIA_ACLINK_CTRL
,
946 VIA_ACLINK_CTRL_RESET
|VIA_ACLINK_CTRL_SYNC
);
949 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
950 pci_write_config_byte(chip
->pci
, VIA_ACLINK_CTRL
, VIA_ACLINK_CTRL_INIT
);
954 pci_read_config_byte(chip
->pci
, VIA_ACLINK_CTRL
, &pval
);
955 if ((pval
& VIA_ACLINK_CTRL_INIT
) != VIA_ACLINK_CTRL_INIT
) {
956 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
957 pci_write_config_byte(chip
->pci
, VIA_ACLINK_CTRL
, VIA_ACLINK_CTRL_INIT
);
961 /* wait until codec ready */
962 end_time
= jiffies
+ msecs_to_jiffies(750);
964 pci_read_config_byte(chip
->pci
, VIA_ACLINK_STAT
, &pval
);
965 if (pval
& VIA_ACLINK_C00_READY
) /* primary codec ready */
967 set_current_state(TASK_UNINTERRUPTIBLE
);
969 } while (time_before(jiffies
, end_time
));
971 if ((val
= snd_via82xx_codec_xread(chip
)) & VIA_REG_AC97_BUSY
)
972 snd_printk("AC'97 codec is not ready [0x%x]\n", val
);
974 snd_via82xx_codec_xwrite(chip
, VIA_REG_AC97_READ
|
975 VIA_REG_AC97_SECONDARY_VALID
|
976 (VIA_REG_AC97_CODEC_ID_SECONDARY
<< VIA_REG_AC97_CODEC_ID_SHIFT
));
977 end_time
= jiffies
+ msecs_to_jiffies(750);
978 snd_via82xx_codec_xwrite(chip
, VIA_REG_AC97_READ
|
979 VIA_REG_AC97_SECONDARY_VALID
|
980 (VIA_REG_AC97_CODEC_ID_SECONDARY
<< VIA_REG_AC97_CODEC_ID_SHIFT
));
982 if ((val
= snd_via82xx_codec_xread(chip
)) & VIA_REG_AC97_SECONDARY_VALID
) {
983 chip
->ac97_secondary
= 1;
986 set_current_state(TASK_INTERRUPTIBLE
);
988 } while (time_before(jiffies
, end_time
));
989 /* This is ok, the most of motherboards have only one codec */
993 /* route FM trap to IRQ, disable FM trap */
994 // pci_write_config_byte(chip->pci, VIA_FM_NMI_CTRL, 0);
995 /* disable all GPI interrupts */
996 outl(0, VIAREG(chip
, GPI_INTR
));
1005 static int snd_via82xx_suspend(snd_card_t
*card
, pm_message_t state
)
1007 via82xx_t
*chip
= card
->pm_private_data
;
1010 for (i
= 0; i
< 2; i
++)
1012 snd_pcm_suspend_all(chip
->pcms
[i
]);
1013 for (i
= 0; i
< chip
->num_devs
; i
++)
1014 snd_via82xx_channel_reset(chip
, &chip
->devs
[i
]);
1015 synchronize_irq(chip
->irq
);
1016 snd_ac97_suspend(chip
->ac97
);
1017 pci_set_power_state(chip
->pci
, 3);
1018 pci_disable_device(chip
->pci
);
1022 static int snd_via82xx_resume(snd_card_t
*card
)
1024 via82xx_t
*chip
= card
->pm_private_data
;
1027 pci_enable_device(chip
->pci
);
1028 pci_set_power_state(chip
->pci
, 0);
1029 pci_set_master(chip
->pci
);
1031 snd_via82xx_chip_init(chip
);
1033 snd_ac97_resume(chip
->ac97
);
1035 for (i
= 0; i
< chip
->num_devs
; i
++)
1036 snd_via82xx_channel_reset(chip
, &chip
->devs
[i
]);
1040 #endif /* CONFIG_PM */
1042 static int snd_via82xx_free(via82xx_t
*chip
)
1048 /* disable interrupts */
1049 for (i
= 0; i
< chip
->num_devs
; i
++)
1050 snd_via82xx_channel_reset(chip
, &chip
->devs
[i
]);
1051 synchronize_irq(chip
->irq
);
1054 free_irq(chip
->irq
, (void *)chip
);
1055 pci_release_regions(chip
->pci
);
1056 pci_disable_device(chip
->pci
);
1061 static int snd_via82xx_dev_free(snd_device_t
*device
)
1063 via82xx_t
*chip
= device
->device_data
;
1064 return snd_via82xx_free(chip
);
1067 static int __devinit
snd_via82xx_create(snd_card_t
* card
,
1068 struct pci_dev
*pci
,
1071 unsigned int ac97_clock
,
1076 static snd_device_ops_t ops
= {
1077 .dev_free
= snd_via82xx_dev_free
,
1080 if ((err
= pci_enable_device(pci
)) < 0)
1083 if ((chip
= kzalloc(sizeof(*chip
), GFP_KERNEL
)) == NULL
) {
1084 pci_disable_device(pci
);
1088 spin_lock_init(&chip
->reg_lock
);
1093 if ((err
= pci_request_regions(pci
, card
->driver
)) < 0) {
1095 pci_disable_device(pci
);
1098 chip
->port
= pci_resource_start(pci
, 0);
1099 if (request_irq(pci
->irq
, snd_via82xx_interrupt
, SA_INTERRUPT
|SA_SHIRQ
,
1100 card
->driver
, (void *)chip
)) {
1101 snd_printk("unable to grab IRQ %d\n", pci
->irq
);
1102 snd_via82xx_free(chip
);
1105 chip
->irq
= pci
->irq
;
1106 if (ac97_clock
>= 8000 && ac97_clock
<= 48000)
1107 chip
->ac97_clock
= ac97_clock
;
1108 synchronize_irq(chip
->irq
);
1110 if ((err
= snd_via82xx_chip_init(chip
)) < 0) {
1111 snd_via82xx_free(chip
);
1115 if ((err
= snd_device_new(card
, SNDRV_DEV_LOWLEVEL
, chip
, &ops
)) < 0) {
1116 snd_via82xx_free(chip
);
1120 /* The 8233 ac97 controller does not implement the master bit
1121 * in the pci command register. IMHO this is a violation of the PCI spec.
1122 * We call pci_set_master here because it does not hurt. */
1123 pci_set_master(pci
);
1125 snd_card_set_dev(card
, &pci
->dev
);
1132 static int __devinit
snd_via82xx_probe(struct pci_dev
*pci
,
1133 const struct pci_device_id
*pci_id
)
1137 unsigned char revision
;
1138 int chip_type
= 0, card_type
;
1142 card
= snd_card_new(index
, id
, THIS_MODULE
, 0);
1146 card_type
= pci_id
->driver_data
;
1147 pci_read_config_byte(pci
, PCI_REVISION_ID
, &revision
);
1148 switch (card_type
) {
1149 case TYPE_CARD_VIA82XX_MODEM
:
1150 strcpy(card
->driver
, "VIA82XX-MODEM");
1151 sprintf(card
->shortname
, "VIA 82XX modem");
1154 snd_printk(KERN_ERR
"invalid card type %d\n", card_type
);
1159 if ((err
= snd_via82xx_create(card
, pci
, chip_type
, revision
,
1160 ac97_clock
, &chip
)) < 0)
1162 if ((err
= snd_via82xx_mixer_new(chip
)) < 0)
1165 if ((err
= snd_via686_pcm_new(chip
)) < 0 )
1168 snd_card_set_pm_callback(card
, snd_via82xx_suspend
, snd_via82xx_resume
, chip
);
1170 /* disable interrupts */
1171 for (i
= 0; i
< chip
->num_devs
; i
++)
1172 snd_via82xx_channel_reset(chip
, &chip
->devs
[i
]);
1174 sprintf(card
->longname
, "%s at 0x%lx, irq %d",
1175 card
->shortname
, chip
->port
, chip
->irq
);
1177 snd_via82xx_proc_init(chip
);
1179 if ((err
= snd_card_register(card
)) < 0) {
1180 snd_card_free(card
);
1183 pci_set_drvdata(pci
, card
);
1187 snd_card_free(card
);
1191 static void __devexit
snd_via82xx_remove(struct pci_dev
*pci
)
1193 snd_card_free(pci_get_drvdata(pci
));
1194 pci_set_drvdata(pci
, NULL
);
1197 static struct pci_driver driver
= {
1198 .name
= "VIA 82xx Modem",
1199 .owner
= THIS_MODULE
,
1200 .id_table
= snd_via82xx_modem_ids
,
1201 .probe
= snd_via82xx_probe
,
1202 .remove
= __devexit_p(snd_via82xx_remove
),
1203 SND_PCI_PM_CALLBACKS
1206 static int __init
alsa_card_via82xx_init(void)
1208 return pci_register_driver(&driver
);
1211 static void __exit
alsa_card_via82xx_exit(void)
1213 pci_unregister_driver(&driver
);
1216 module_init(alsa_card_via82xx_init
)
1217 module_exit(alsa_card_via82xx_exit
)