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@alsa-project.org>
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).");
69 /* just for backward compatibility */
71 module_param(enable
, bool, 0444);
78 #define VIAREG(via, x) ((via)->port + VIA_REG_##x)
79 #define VIADEV_REG(viadev, x) ((viadev)->port + VIA_REG_##x)
82 #define VIA_REG_OFFSET_STATUS 0x00 /* byte - channel status */
83 #define VIA_REG_STAT_ACTIVE 0x80 /* RO */
84 #define VIA_REG_STAT_PAUSED 0x40 /* RO */
85 #define VIA_REG_STAT_TRIGGER_QUEUED 0x08 /* RO */
86 #define VIA_REG_STAT_STOPPED 0x04 /* RWC */
87 #define VIA_REG_STAT_EOL 0x02 /* RWC */
88 #define VIA_REG_STAT_FLAG 0x01 /* RWC */
89 #define VIA_REG_OFFSET_CONTROL 0x01 /* byte - channel control */
90 #define VIA_REG_CTRL_START 0x80 /* WO */
91 #define VIA_REG_CTRL_TERMINATE 0x40 /* WO */
92 #define VIA_REG_CTRL_AUTOSTART 0x20
93 #define VIA_REG_CTRL_PAUSE 0x08 /* RW */
94 #define VIA_REG_CTRL_INT_STOP 0x04
95 #define VIA_REG_CTRL_INT_EOL 0x02
96 #define VIA_REG_CTRL_INT_FLAG 0x01
97 #define VIA_REG_CTRL_RESET 0x01 /* RW - probably reset? undocumented */
98 #define VIA_REG_CTRL_INT (VIA_REG_CTRL_INT_FLAG | VIA_REG_CTRL_INT_EOL | VIA_REG_CTRL_AUTOSTART)
99 #define VIA_REG_OFFSET_TYPE 0x02 /* byte - channel type (686 only) */
100 #define VIA_REG_TYPE_AUTOSTART 0x80 /* RW - autostart at EOL */
101 #define VIA_REG_TYPE_16BIT 0x20 /* RW */
102 #define VIA_REG_TYPE_STEREO 0x10 /* RW */
103 #define VIA_REG_TYPE_INT_LLINE 0x00
104 #define VIA_REG_TYPE_INT_LSAMPLE 0x04
105 #define VIA_REG_TYPE_INT_LESSONE 0x08
106 #define VIA_REG_TYPE_INT_MASK 0x0c
107 #define VIA_REG_TYPE_INT_EOL 0x02
108 #define VIA_REG_TYPE_INT_FLAG 0x01
109 #define VIA_REG_OFFSET_TABLE_PTR 0x04 /* dword - channel table pointer */
110 #define VIA_REG_OFFSET_CURR_PTR 0x04 /* dword - channel current pointer */
111 #define VIA_REG_OFFSET_STOP_IDX 0x08 /* dword - stop index, channel type, sample rate */
112 #define VIA_REG_OFFSET_CURR_COUNT 0x0c /* dword - channel current count (24 bit) */
113 #define VIA_REG_OFFSET_CURR_INDEX 0x0f /* byte - channel current index (for via8233 only) */
115 #define DEFINE_VIA_REGSET(name,val) \
117 VIA_REG_##name##_STATUS = (val),\
118 VIA_REG_##name##_CONTROL = (val) + 0x01,\
119 VIA_REG_##name##_TYPE = (val) + 0x02,\
120 VIA_REG_##name##_TABLE_PTR = (val) + 0x04,\
121 VIA_REG_##name##_CURR_PTR = (val) + 0x04,\
122 VIA_REG_##name##_STOP_IDX = (val) + 0x08,\
123 VIA_REG_##name##_CURR_COUNT = (val) + 0x0c,\
127 DEFINE_VIA_REGSET(MO
, 0x40);
128 DEFINE_VIA_REGSET(MI
, 0x50);
131 #define VIA_REG_AC97 0x80 /* dword */
132 #define VIA_REG_AC97_CODEC_ID_MASK (3<<30)
133 #define VIA_REG_AC97_CODEC_ID_SHIFT 30
134 #define VIA_REG_AC97_CODEC_ID_PRIMARY 0x00
135 #define VIA_REG_AC97_CODEC_ID_SECONDARY 0x01
136 #define VIA_REG_AC97_SECONDARY_VALID (1<<27)
137 #define VIA_REG_AC97_PRIMARY_VALID (1<<25)
138 #define VIA_REG_AC97_BUSY (1<<24)
139 #define VIA_REG_AC97_READ (1<<23)
140 #define VIA_REG_AC97_CMD_SHIFT 16
141 #define VIA_REG_AC97_CMD_MASK 0x7e
142 #define VIA_REG_AC97_DATA_SHIFT 0
143 #define VIA_REG_AC97_DATA_MASK 0xffff
145 #define VIA_REG_SGD_SHADOW 0x84 /* dword */
146 #define VIA_REG_SGD_STAT_PB_FLAG (1<<0)
147 #define VIA_REG_SGD_STAT_CP_FLAG (1<<1)
148 #define VIA_REG_SGD_STAT_FM_FLAG (1<<2)
149 #define VIA_REG_SGD_STAT_PB_EOL (1<<4)
150 #define VIA_REG_SGD_STAT_CP_EOL (1<<5)
151 #define VIA_REG_SGD_STAT_FM_EOL (1<<6)
152 #define VIA_REG_SGD_STAT_PB_STOP (1<<8)
153 #define VIA_REG_SGD_STAT_CP_STOP (1<<9)
154 #define VIA_REG_SGD_STAT_FM_STOP (1<<10)
155 #define VIA_REG_SGD_STAT_PB_ACTIVE (1<<12)
156 #define VIA_REG_SGD_STAT_CP_ACTIVE (1<<13)
157 #define VIA_REG_SGD_STAT_FM_ACTIVE (1<<14)
158 #define VIA_REG_SGD_STAT_MR_FLAG (1<<16)
159 #define VIA_REG_SGD_STAT_MW_FLAG (1<<17)
160 #define VIA_REG_SGD_STAT_MR_EOL (1<<20)
161 #define VIA_REG_SGD_STAT_MW_EOL (1<<21)
162 #define VIA_REG_SGD_STAT_MR_STOP (1<<24)
163 #define VIA_REG_SGD_STAT_MW_STOP (1<<25)
164 #define VIA_REG_SGD_STAT_MR_ACTIVE (1<<28)
165 #define VIA_REG_SGD_STAT_MW_ACTIVE (1<<29)
167 #define VIA_REG_GPI_STATUS 0x88
168 #define VIA_REG_GPI_INTR 0x8c
170 #define VIA_TBL_BIT_FLAG 0x40000000
171 #define VIA_TBL_BIT_EOL 0x80000000
174 #define VIA_ACLINK_STAT 0x40
175 #define VIA_ACLINK_C11_READY 0x20
176 #define VIA_ACLINK_C10_READY 0x10
177 #define VIA_ACLINK_C01_READY 0x04 /* secondary codec ready */
178 #define VIA_ACLINK_LOWPOWER 0x02 /* low-power state */
179 #define VIA_ACLINK_C00_READY 0x01 /* primary codec ready */
180 #define VIA_ACLINK_CTRL 0x41
181 #define VIA_ACLINK_CTRL_ENABLE 0x80 /* 0: disable, 1: enable */
182 #define VIA_ACLINK_CTRL_RESET 0x40 /* 0: assert, 1: de-assert */
183 #define VIA_ACLINK_CTRL_SYNC 0x20 /* 0: release SYNC, 1: force SYNC hi */
184 #define VIA_ACLINK_CTRL_SDO 0x10 /* 0: release SDO, 1: force SDO hi */
185 #define VIA_ACLINK_CTRL_VRA 0x08 /* 0: disable VRA, 1: enable VRA */
186 #define VIA_ACLINK_CTRL_PCM 0x04 /* 0: disable PCM, 1: enable PCM */
187 #define VIA_ACLINK_CTRL_FM 0x02 /* via686 only */
188 #define VIA_ACLINK_CTRL_SB 0x01 /* via686 only */
189 #define VIA_ACLINK_CTRL_INIT (VIA_ACLINK_CTRL_ENABLE|\
190 VIA_ACLINK_CTRL_RESET|\
192 #define VIA_FUNC_ENABLE 0x42
193 #define VIA_FUNC_MIDI_PNP 0x80 /* FIXME: it's 0x40 in the datasheet! */
194 #define VIA_FUNC_MIDI_IRQMASK 0x40 /* FIXME: not documented! */
195 #define VIA_FUNC_RX2C_WRITE 0x20
196 #define VIA_FUNC_SB_FIFO_EMPTY 0x10
197 #define VIA_FUNC_ENABLE_GAME 0x08
198 #define VIA_FUNC_ENABLE_FM 0x04
199 #define VIA_FUNC_ENABLE_MIDI 0x02
200 #define VIA_FUNC_ENABLE_SB 0x01
201 #define VIA_PNP_CONTROL 0x43
202 #define VIA_MC97_CTRL 0x44
203 #define VIA_MC97_CTRL_ENABLE 0x80
204 #define VIA_MC97_CTRL_SECONDARY 0x40
205 #define VIA_MC97_CTRL_INIT (VIA_MC97_CTRL_ENABLE|\
206 VIA_MC97_CTRL_SECONDARY)
209 typedef struct _snd_via82xx_modem via82xx_t
;
210 typedef struct via_dev viadev_t
;
216 struct snd_via_sg_table
{
221 #define VIA_TABLE_SIZE 255
224 unsigned int reg_offset
;
226 int direction
; /* playback = 0, capture = 1 */
227 snd_pcm_substream_t
*substream
;
229 unsigned int tbl_entries
; /* # descriptors */
230 struct snd_dma_buffer table
;
231 struct snd_via_sg_table
*idx_table
;
232 /* for recovery from the unexpected pointer */
233 unsigned int lastpos
;
234 unsigned int bufsize
;
235 unsigned int bufsize2
;
238 enum { TYPE_CARD_VIA82XX_MODEM
= 1 };
240 #define VIA_MAX_MODEM_DEVS 2
242 struct _snd_via82xx_modem
{
247 unsigned int intr_mask
; /* SGD_SHADOW mask to check interrupts */
252 unsigned int num_devs
;
253 unsigned int playback_devno
, capture_devno
;
254 viadev_t devs
[VIA_MAX_MODEM_DEVS
];
258 ac97_bus_t
*ac97_bus
;
260 unsigned int ac97_clock
;
261 unsigned int ac97_secondary
; /* secondary AC'97 codec is present */
264 snd_info_entry_t
*proc_entry
;
267 static struct pci_device_id snd_via82xx_modem_ids
[] = {
268 { 0x1106, 0x3068, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, TYPE_CARD_VIA82XX_MODEM
, },
272 MODULE_DEVICE_TABLE(pci
, snd_via82xx_modem_ids
);
278 * allocate and initialize the descriptor buffers
279 * periods = number of periods
280 * fragsize = period size in bytes
282 static int build_via_table(viadev_t
*dev
, snd_pcm_substream_t
*substream
,
284 unsigned int periods
, unsigned int fragsize
)
286 unsigned int i
, idx
, ofs
, rest
;
287 via82xx_t
*chip
= snd_pcm_substream_chip(substream
);
288 struct snd_sg_buf
*sgbuf
= snd_pcm_substream_sgbuf(substream
);
290 if (dev
->table
.area
== NULL
) {
291 /* the start of each lists must be aligned to 8 bytes,
292 * but the kernel pages are much bigger, so we don't care
294 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV
, snd_dma_pci_data(chip
->pci
),
295 PAGE_ALIGN(VIA_TABLE_SIZE
* 2 * 8),
299 if (! dev
->idx_table
) {
300 dev
->idx_table
= kmalloc(sizeof(*dev
->idx_table
) * VIA_TABLE_SIZE
, GFP_KERNEL
);
301 if (! dev
->idx_table
)
305 /* fill the entries */
308 for (i
= 0; i
< periods
; i
++) {
310 /* fill descriptors for a period.
311 * a period can be split to several descriptors if it's
312 * over page boundary.
318 if (idx
>= VIA_TABLE_SIZE
) {
319 snd_printk(KERN_ERR
"via82xx: too much table size!\n");
322 ((u32
*)dev
->table
.area
)[idx
<< 1] = cpu_to_le32((u32
)snd_pcm_sgbuf_get_addr(sgbuf
, ofs
));
323 r
= PAGE_SIZE
- (ofs
% PAGE_SIZE
);
328 if (i
== periods
- 1)
329 flag
= VIA_TBL_BIT_EOL
; /* buffer boundary */
331 flag
= VIA_TBL_BIT_FLAG
; /* period boundary */
333 flag
= 0; /* period continues to the next */
334 // printk("via: tbl %d: at %d size %d (rest %d)\n", idx, ofs, r, rest);
335 ((u32
*)dev
->table
.area
)[(idx
<<1) + 1] = cpu_to_le32(r
| flag
);
336 dev
->idx_table
[idx
].offset
= ofs
;
337 dev
->idx_table
[idx
].size
= r
;
342 dev
->tbl_entries
= idx
;
343 dev
->bufsize
= periods
* fragsize
;
344 dev
->bufsize2
= dev
->bufsize
/ 2;
349 static int clean_via_table(viadev_t
*dev
, snd_pcm_substream_t
*substream
,
352 if (dev
->table
.area
) {
353 snd_dma_free_pages(&dev
->table
);
354 dev
->table
.area
= NULL
;
356 kfree(dev
->idx_table
);
357 dev
->idx_table
= NULL
;
365 static inline unsigned int snd_via82xx_codec_xread(via82xx_t
*chip
)
367 return inl(VIAREG(chip
, AC97
));
370 static inline void snd_via82xx_codec_xwrite(via82xx_t
*chip
, unsigned int val
)
372 outl(val
, VIAREG(chip
, AC97
));
375 static int snd_via82xx_codec_ready(via82xx_t
*chip
, int secondary
)
377 unsigned int timeout
= 1000; /* 1ms */
380 while (timeout
-- > 0) {
382 if (!((val
= snd_via82xx_codec_xread(chip
)) & VIA_REG_AC97_BUSY
))
385 snd_printk(KERN_ERR
"codec_ready: codec %i is not ready [0x%x]\n", secondary
, snd_via82xx_codec_xread(chip
));
389 static int snd_via82xx_codec_valid(via82xx_t
*chip
, int secondary
)
391 unsigned int timeout
= 1000; /* 1ms */
392 unsigned int val
, val1
;
393 unsigned int stat
= !secondary
? VIA_REG_AC97_PRIMARY_VALID
:
394 VIA_REG_AC97_SECONDARY_VALID
;
396 while (timeout
-- > 0) {
397 val
= snd_via82xx_codec_xread(chip
);
398 val1
= val
& (VIA_REG_AC97_BUSY
| stat
);
406 static void snd_via82xx_codec_wait(ac97_t
*ac97
)
408 via82xx_t
*chip
= ac97
->private_data
;
410 err
= snd_via82xx_codec_ready(chip
, ac97
->num
);
411 /* here we need to wait fairly for long time.. */
415 static void snd_via82xx_codec_write(ac97_t
*ac97
,
419 via82xx_t
*chip
= ac97
->private_data
;
421 if(reg
== AC97_GPIO_STATUS
) {
422 outl(val
, VIAREG(chip
, GPI_STATUS
));
425 xval
= !ac97
->num
? VIA_REG_AC97_CODEC_ID_PRIMARY
: VIA_REG_AC97_CODEC_ID_SECONDARY
;
426 xval
<<= VIA_REG_AC97_CODEC_ID_SHIFT
;
427 xval
|= reg
<< VIA_REG_AC97_CMD_SHIFT
;
428 xval
|= val
<< VIA_REG_AC97_DATA_SHIFT
;
429 snd_via82xx_codec_xwrite(chip
, xval
);
430 snd_via82xx_codec_ready(chip
, ac97
->num
);
433 static unsigned short snd_via82xx_codec_read(ac97_t
*ac97
, unsigned short reg
)
435 via82xx_t
*chip
= ac97
->private_data
;
436 unsigned int xval
, val
= 0xffff;
439 xval
= ac97
->num
<< VIA_REG_AC97_CODEC_ID_SHIFT
;
440 xval
|= ac97
->num
? VIA_REG_AC97_SECONDARY_VALID
: VIA_REG_AC97_PRIMARY_VALID
;
441 xval
|= VIA_REG_AC97_READ
;
442 xval
|= (reg
& 0x7f) << VIA_REG_AC97_CMD_SHIFT
;
445 snd_printk(KERN_ERR
"codec_read: codec %i is not valid [0x%x]\n", ac97
->num
, snd_via82xx_codec_xread(chip
));
448 snd_via82xx_codec_xwrite(chip
, xval
);
450 if (snd_via82xx_codec_valid(chip
, ac97
->num
) >= 0) {
452 val
= snd_via82xx_codec_xread(chip
);
459 static void snd_via82xx_channel_reset(via82xx_t
*chip
, viadev_t
*viadev
)
461 outb(VIA_REG_CTRL_PAUSE
| VIA_REG_CTRL_TERMINATE
| VIA_REG_CTRL_RESET
,
462 VIADEV_REG(viadev
, OFFSET_CONTROL
));
463 inb(VIADEV_REG(viadev
, OFFSET_CONTROL
));
465 /* disable interrupts */
466 outb(0x00, VIADEV_REG(viadev
, OFFSET_CONTROL
));
467 /* clear interrupts */
468 outb(0x03, VIADEV_REG(viadev
, OFFSET_STATUS
));
469 outb(0x00, VIADEV_REG(viadev
, OFFSET_TYPE
)); /* for via686 */
470 // outl(0, VIADEV_REG(viadev, OFFSET_CURR_PTR));
479 static irqreturn_t
snd_via82xx_interrupt(int irq
, void *dev_id
, struct pt_regs
*regs
)
481 via82xx_t
*chip
= dev_id
;
485 status
= inl(VIAREG(chip
, SGD_SHADOW
));
486 if (! (status
& chip
->intr_mask
)) {
491 /* check status for each stream */
492 spin_lock(&chip
->reg_lock
);
493 for (i
= 0; i
< chip
->num_devs
; i
++) {
494 viadev_t
*viadev
= &chip
->devs
[i
];
495 unsigned char c_status
= inb(VIADEV_REG(viadev
, OFFSET_STATUS
));
496 c_status
&= (VIA_REG_STAT_EOL
|VIA_REG_STAT_FLAG
|VIA_REG_STAT_STOPPED
);
499 if (viadev
->substream
&& viadev
->running
) {
500 spin_unlock(&chip
->reg_lock
);
501 snd_pcm_period_elapsed(viadev
->substream
);
502 spin_lock(&chip
->reg_lock
);
504 outb(c_status
, VIADEV_REG(viadev
, OFFSET_STATUS
)); /* ack */
506 spin_unlock(&chip
->reg_lock
);
517 static int snd_via82xx_pcm_trigger(snd_pcm_substream_t
* substream
, int cmd
)
519 via82xx_t
*chip
= snd_pcm_substream_chip(substream
);
520 viadev_t
*viadev
= (viadev_t
*)substream
->runtime
->private_data
;
521 unsigned char val
= 0;
524 case SNDRV_PCM_TRIGGER_START
:
525 case SNDRV_PCM_TRIGGER_SUSPEND
:
526 val
|= VIA_REG_CTRL_START
;
529 case SNDRV_PCM_TRIGGER_STOP
:
530 val
= VIA_REG_CTRL_TERMINATE
;
533 case SNDRV_PCM_TRIGGER_PAUSE_PUSH
:
534 val
|= VIA_REG_CTRL_PAUSE
;
537 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE
:
543 outb(val
, VIADEV_REG(viadev
, OFFSET_CONTROL
));
544 if (cmd
== SNDRV_PCM_TRIGGER_STOP
)
545 snd_via82xx_channel_reset(chip
, viadev
);
554 * calculate the linear position at the given sg-buffer index and the rest count
557 #define check_invalid_pos(viadev,pos) \
558 ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 || viadev->lastpos < viadev->bufsize2))
560 static inline unsigned int calc_linear_pos(viadev_t
*viadev
, unsigned int idx
, unsigned int count
)
562 unsigned int size
, res
;
564 size
= viadev
->idx_table
[idx
].size
;
565 res
= viadev
->idx_table
[idx
].offset
+ size
- count
;
567 /* check the validity of the calculated position */
569 snd_printd(KERN_ERR
"invalid via82xx_cur_ptr (size = %d, count = %d)\n", (int)size
, (int)count
);
570 res
= viadev
->lastpos
;
571 } else if (check_invalid_pos(viadev
, res
)) {
573 printk(KERN_DEBUG
"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
);
575 if (count
&& size
< count
) {
576 snd_printd(KERN_ERR
"invalid via82xx_cur_ptr, using last valid pointer\n");
577 res
= viadev
->lastpos
;
580 /* bogus count 0 on the DMA boundary? */
581 res
= viadev
->idx_table
[idx
].offset
;
583 /* count register returns full size when end of buffer is reached */
584 res
= viadev
->idx_table
[idx
].offset
+ size
;
585 if (check_invalid_pos(viadev
, res
)) {
586 snd_printd(KERN_ERR
"invalid via82xx_cur_ptr (2), using last valid pointer\n");
587 res
= viadev
->lastpos
;
591 viadev
->lastpos
= res
; /* remember the last position */
592 if (res
>= viadev
->bufsize
)
593 res
-= viadev
->bufsize
;
598 * get the current pointer on via686
600 static snd_pcm_uframes_t
snd_via686_pcm_pointer(snd_pcm_substream_t
*substream
)
602 via82xx_t
*chip
= snd_pcm_substream_chip(substream
);
603 viadev_t
*viadev
= (viadev_t
*)substream
->runtime
->private_data
;
604 unsigned int idx
, ptr
, count
, res
;
606 snd_assert(viadev
->tbl_entries
, return 0);
607 if (!(inb(VIADEV_REG(viadev
, OFFSET_STATUS
)) & VIA_REG_STAT_ACTIVE
))
610 spin_lock(&chip
->reg_lock
);
611 count
= inl(VIADEV_REG(viadev
, OFFSET_CURR_COUNT
)) & 0xffffff;
612 /* The via686a does not have the current index register,
613 * so we need to calculate the index from CURR_PTR.
615 ptr
= inl(VIADEV_REG(viadev
, OFFSET_CURR_PTR
));
616 if (ptr
<= (unsigned int)viadev
->table
.addr
)
618 else /* CURR_PTR holds the address + 8 */
619 idx
= ((ptr
- (unsigned int)viadev
->table
.addr
) / 8 - 1) % viadev
->tbl_entries
;
620 res
= calc_linear_pos(viadev
, idx
, count
);
621 spin_unlock(&chip
->reg_lock
);
623 return bytes_to_frames(substream
->runtime
, res
);
627 * hw_params callback:
628 * allocate the buffer and build up the buffer description table
630 static int snd_via82xx_hw_params(snd_pcm_substream_t
* substream
,
631 snd_pcm_hw_params_t
* hw_params
)
633 via82xx_t
*chip
= snd_pcm_substream_chip(substream
);
634 viadev_t
*viadev
= (viadev_t
*)substream
->runtime
->private_data
;
637 err
= snd_pcm_lib_malloc_pages(substream
, params_buffer_bytes(hw_params
));
640 err
= build_via_table(viadev
, substream
, chip
->pci
,
641 params_periods(hw_params
),
642 params_period_bytes(hw_params
));
646 snd_ac97_write(chip
->ac97
, AC97_LINE1_RATE
, params_rate(hw_params
));
647 snd_ac97_write(chip
->ac97
, AC97_LINE1_LEVEL
, 0);
654 * clean up the buffer description table and release the buffer
656 static int snd_via82xx_hw_free(snd_pcm_substream_t
* substream
)
658 via82xx_t
*chip
= snd_pcm_substream_chip(substream
);
659 viadev_t
*viadev
= (viadev_t
*)substream
->runtime
->private_data
;
661 clean_via_table(viadev
, substream
, chip
->pci
);
662 snd_pcm_lib_free_pages(substream
);
668 * set up the table pointer
670 static void snd_via82xx_set_table_ptr(via82xx_t
*chip
, viadev_t
*viadev
)
672 snd_via82xx_codec_ready(chip
, chip
->ac97_secondary
);
673 outl((u32
)viadev
->table
.addr
, VIADEV_REG(viadev
, OFFSET_TABLE_PTR
));
675 snd_via82xx_codec_ready(chip
, chip
->ac97_secondary
);
679 * prepare callback for playback and capture
681 static int snd_via82xx_pcm_prepare(snd_pcm_substream_t
*substream
)
683 via82xx_t
*chip
= snd_pcm_substream_chip(substream
);
684 viadev_t
*viadev
= (viadev_t
*)substream
->runtime
->private_data
;
686 snd_via82xx_channel_reset(chip
, viadev
);
687 /* this must be set after channel_reset */
688 snd_via82xx_set_table_ptr(chip
, viadev
);
689 outb(VIA_REG_TYPE_AUTOSTART
|VIA_REG_TYPE_INT_EOL
|VIA_REG_TYPE_INT_FLAG
,
690 VIADEV_REG(viadev
, OFFSET_TYPE
));
695 * pcm hardware definition, identical for both playback and capture
697 static snd_pcm_hardware_t snd_via82xx_hw
=
699 .info
= (SNDRV_PCM_INFO_MMAP
| SNDRV_PCM_INFO_INTERLEAVED
|
700 SNDRV_PCM_INFO_BLOCK_TRANSFER
|
701 SNDRV_PCM_INFO_MMAP_VALID
|
702 /* SNDRV_PCM_INFO_RESUME | */
703 SNDRV_PCM_INFO_PAUSE
),
704 .formats
= SNDRV_PCM_FMTBIT_U8
| SNDRV_PCM_FMTBIT_S16_LE
,
705 .rates
= SNDRV_PCM_RATE_8000
| SNDRV_PCM_RATE_16000
| SNDRV_PCM_RATE_KNOT
,
710 .buffer_bytes_max
= 128 * 1024,
711 .period_bytes_min
= 32,
712 .period_bytes_max
= 128 * 1024,
714 .periods_max
= VIA_TABLE_SIZE
/ 2,
720 * open callback skeleton
722 static int snd_via82xx_modem_pcm_open(via82xx_t
*chip
, viadev_t
*viadev
, snd_pcm_substream_t
* substream
)
724 snd_pcm_runtime_t
*runtime
= substream
->runtime
;
726 static unsigned int rates
[] = { 8000, 9600, 12000, 16000 };
727 static snd_pcm_hw_constraint_list_t hw_constraints_rates
= {
728 .count
= ARRAY_SIZE(rates
),
733 runtime
->hw
= snd_via82xx_hw
;
735 if ((err
= snd_pcm_hw_constraint_list(runtime
, 0, SNDRV_PCM_HW_PARAM_RATE
, &hw_constraints_rates
)) < 0)
738 /* we may remove following constaint when we modify table entries
740 if ((err
= snd_pcm_hw_constraint_integer(runtime
, SNDRV_PCM_HW_PARAM_PERIODS
)) < 0)
743 runtime
->private_data
= viadev
;
744 viadev
->substream
= substream
;
751 * open callback for playback
753 static int snd_via82xx_playback_open(snd_pcm_substream_t
* substream
)
755 via82xx_t
*chip
= snd_pcm_substream_chip(substream
);
756 viadev_t
*viadev
= &chip
->devs
[chip
->playback_devno
+ substream
->number
];
758 return snd_via82xx_modem_pcm_open(chip
, viadev
, substream
);
762 * open callback for capture
764 static int snd_via82xx_capture_open(snd_pcm_substream_t
* substream
)
766 via82xx_t
*chip
= snd_pcm_substream_chip(substream
);
767 viadev_t
*viadev
= &chip
->devs
[chip
->capture_devno
+ substream
->pcm
->device
];
769 return snd_via82xx_modem_pcm_open(chip
, viadev
, substream
);
775 static int snd_via82xx_pcm_close(snd_pcm_substream_t
* substream
)
777 viadev_t
*viadev
= (viadev_t
*)substream
->runtime
->private_data
;
779 viadev
->substream
= NULL
;
784 /* via686 playback callbacks */
785 static snd_pcm_ops_t snd_via686_playback_ops
= {
786 .open
= snd_via82xx_playback_open
,
787 .close
= snd_via82xx_pcm_close
,
788 .ioctl
= snd_pcm_lib_ioctl
,
789 .hw_params
= snd_via82xx_hw_params
,
790 .hw_free
= snd_via82xx_hw_free
,
791 .prepare
= snd_via82xx_pcm_prepare
,
792 .trigger
= snd_via82xx_pcm_trigger
,
793 .pointer
= snd_via686_pcm_pointer
,
794 .page
= snd_pcm_sgbuf_ops_page
,
797 /* via686 capture callbacks */
798 static snd_pcm_ops_t snd_via686_capture_ops
= {
799 .open
= snd_via82xx_capture_open
,
800 .close
= snd_via82xx_pcm_close
,
801 .ioctl
= snd_pcm_lib_ioctl
,
802 .hw_params
= snd_via82xx_hw_params
,
803 .hw_free
= snd_via82xx_hw_free
,
804 .prepare
= snd_via82xx_pcm_prepare
,
805 .trigger
= snd_via82xx_pcm_trigger
,
806 .pointer
= snd_via686_pcm_pointer
,
807 .page
= snd_pcm_sgbuf_ops_page
,
811 static void init_viadev(via82xx_t
*chip
, int idx
, unsigned int reg_offset
, int direction
)
813 chip
->devs
[idx
].reg_offset
= reg_offset
;
814 chip
->devs
[idx
].direction
= direction
;
815 chip
->devs
[idx
].port
= chip
->port
+ reg_offset
;
819 * create a pcm instance for via686a/b
821 static int __devinit
snd_via686_pcm_new(via82xx_t
*chip
)
826 chip
->playback_devno
= 0;
827 chip
->capture_devno
= 1;
829 chip
->intr_mask
= 0x330000; /* FLAGS | EOL for MR, MW */
831 err
= snd_pcm_new(chip
->card
, chip
->card
->shortname
, 0, 1, 1, &pcm
);
834 snd_pcm_set_ops(pcm
, SNDRV_PCM_STREAM_PLAYBACK
, &snd_via686_playback_ops
);
835 snd_pcm_set_ops(pcm
, SNDRV_PCM_STREAM_CAPTURE
, &snd_via686_capture_ops
);
836 pcm
->dev_class
= SNDRV_PCM_CLASS_MODEM
;
837 pcm
->private_data
= chip
;
838 strcpy(pcm
->name
, chip
->card
->shortname
);
840 init_viadev(chip
, 0, VIA_REG_MO_STATUS
, 0);
841 init_viadev(chip
, 1, VIA_REG_MI_STATUS
, 1);
843 if ((err
= snd_pcm_lib_preallocate_pages_for_all(pcm
, SNDRV_DMA_TYPE_DEV_SG
,
844 snd_dma_pci_data(chip
->pci
), 64*1024, 128*1024)) < 0)
856 static void snd_via82xx_mixer_free_ac97_bus(ac97_bus_t
*bus
)
858 via82xx_t
*chip
= bus
->private_data
;
859 chip
->ac97_bus
= NULL
;
862 static void snd_via82xx_mixer_free_ac97(ac97_t
*ac97
)
864 via82xx_t
*chip
= ac97
->private_data
;
869 static int __devinit
snd_via82xx_mixer_new(via82xx_t
*chip
)
871 ac97_template_t ac97
;
873 static ac97_bus_ops_t ops
= {
874 .write
= snd_via82xx_codec_write
,
875 .read
= snd_via82xx_codec_read
,
876 .wait
= snd_via82xx_codec_wait
,
879 if ((err
= snd_ac97_bus(chip
->card
, 0, &ops
, chip
, &chip
->ac97_bus
)) < 0)
881 chip
->ac97_bus
->private_free
= snd_via82xx_mixer_free_ac97_bus
;
882 chip
->ac97_bus
->clock
= chip
->ac97_clock
;
884 memset(&ac97
, 0, sizeof(ac97
));
885 ac97
.private_data
= chip
;
886 ac97
.private_free
= snd_via82xx_mixer_free_ac97
;
887 ac97
.pci
= chip
->pci
;
888 ac97
.scaps
= AC97_SCAP_SKIP_AUDIO
;
889 ac97
.num
= chip
->ac97_secondary
;
891 if ((err
= snd_ac97_mixer(chip
->ac97_bus
, &ac97
, &chip
->ac97
)) < 0)
901 static void snd_via82xx_proc_read(snd_info_entry_t
*entry
, snd_info_buffer_t
*buffer
)
903 via82xx_t
*chip
= entry
->private_data
;
906 snd_iprintf(buffer
, "%s\n\n", chip
->card
->longname
);
907 for (i
= 0; i
< 0xa0; i
+= 4) {
908 snd_iprintf(buffer
, "%02x: %08x\n", i
, inl(chip
->port
+ i
));
912 static void __devinit
snd_via82xx_proc_init(via82xx_t
*chip
)
914 snd_info_entry_t
*entry
;
916 if (! snd_card_proc_new(chip
->card
, "via82xx", &entry
))
917 snd_info_set_text_ops(entry
, chip
, 1024, snd_via82xx_proc_read
);
924 static int snd_via82xx_chip_init(via82xx_t
*chip
)
927 unsigned long end_time
;
930 pci_read_config_byte(chip
->pci
, VIA_MC97_CTRL
, &pval
);
931 if((pval
& VIA_MC97_CTRL_INIT
) != VIA_MC97_CTRL_INIT
) {
932 pci_write_config_byte(chip
->pci
, 0x44, pval
|VIA_MC97_CTRL_INIT
);
936 pci_read_config_byte(chip
->pci
, VIA_ACLINK_STAT
, &pval
);
937 if (! (pval
& VIA_ACLINK_C00_READY
)) { /* codec not ready? */
938 /* deassert ACLink reset, force SYNC */
939 pci_write_config_byte(chip
->pci
, VIA_ACLINK_CTRL
,
940 VIA_ACLINK_CTRL_ENABLE
|
941 VIA_ACLINK_CTRL_RESET
|
942 VIA_ACLINK_CTRL_SYNC
);
944 #if 1 /* FIXME: should we do full reset here for all chip models? */
945 pci_write_config_byte(chip
->pci
, VIA_ACLINK_CTRL
, 0x00);
948 /* deassert ACLink reset, force SYNC (warm AC'97 reset) */
949 pci_write_config_byte(chip
->pci
, VIA_ACLINK_CTRL
,
950 VIA_ACLINK_CTRL_RESET
|VIA_ACLINK_CTRL_SYNC
);
953 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
954 pci_write_config_byte(chip
->pci
, VIA_ACLINK_CTRL
, VIA_ACLINK_CTRL_INIT
);
958 pci_read_config_byte(chip
->pci
, VIA_ACLINK_CTRL
, &pval
);
959 if ((pval
& VIA_ACLINK_CTRL_INIT
) != VIA_ACLINK_CTRL_INIT
) {
960 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
961 pci_write_config_byte(chip
->pci
, VIA_ACLINK_CTRL
, VIA_ACLINK_CTRL_INIT
);
965 /* wait until codec ready */
966 end_time
= jiffies
+ msecs_to_jiffies(750);
968 pci_read_config_byte(chip
->pci
, VIA_ACLINK_STAT
, &pval
);
969 if (pval
& VIA_ACLINK_C00_READY
) /* primary codec ready */
971 schedule_timeout_uninterruptible(1);
972 } while (time_before(jiffies
, end_time
));
974 if ((val
= snd_via82xx_codec_xread(chip
)) & VIA_REG_AC97_BUSY
)
975 snd_printk(KERN_ERR
"AC'97 codec is not ready [0x%x]\n", val
);
977 snd_via82xx_codec_xwrite(chip
, VIA_REG_AC97_READ
|
978 VIA_REG_AC97_SECONDARY_VALID
|
979 (VIA_REG_AC97_CODEC_ID_SECONDARY
<< VIA_REG_AC97_CODEC_ID_SHIFT
));
980 end_time
= jiffies
+ msecs_to_jiffies(750);
981 snd_via82xx_codec_xwrite(chip
, VIA_REG_AC97_READ
|
982 VIA_REG_AC97_SECONDARY_VALID
|
983 (VIA_REG_AC97_CODEC_ID_SECONDARY
<< VIA_REG_AC97_CODEC_ID_SHIFT
));
985 if ((val
= snd_via82xx_codec_xread(chip
)) & VIA_REG_AC97_SECONDARY_VALID
) {
986 chip
->ac97_secondary
= 1;
989 schedule_timeout_interruptible(1);
990 } while (time_before(jiffies
, end_time
));
991 /* This is ok, the most of motherboards have only one codec */
995 /* route FM trap to IRQ, disable FM trap */
996 // pci_write_config_byte(chip->pci, VIA_FM_NMI_CTRL, 0);
997 /* disable all GPI interrupts */
998 outl(0, VIAREG(chip
, GPI_INTR
));
1007 static int snd_via82xx_suspend(snd_card_t
*card
, pm_message_t state
)
1009 via82xx_t
*chip
= card
->pm_private_data
;
1012 for (i
= 0; i
< 2; i
++)
1014 snd_pcm_suspend_all(chip
->pcms
[i
]);
1015 for (i
= 0; i
< chip
->num_devs
; i
++)
1016 snd_via82xx_channel_reset(chip
, &chip
->devs
[i
]);
1017 synchronize_irq(chip
->irq
);
1018 snd_ac97_suspend(chip
->ac97
);
1019 pci_set_power_state(chip
->pci
, 3);
1020 pci_disable_device(chip
->pci
);
1024 static int snd_via82xx_resume(snd_card_t
*card
)
1026 via82xx_t
*chip
= card
->pm_private_data
;
1029 pci_enable_device(chip
->pci
);
1030 pci_set_power_state(chip
->pci
, 0);
1031 pci_set_master(chip
->pci
);
1033 snd_via82xx_chip_init(chip
);
1035 snd_ac97_resume(chip
->ac97
);
1037 for (i
= 0; i
< chip
->num_devs
; i
++)
1038 snd_via82xx_channel_reset(chip
, &chip
->devs
[i
]);
1042 #endif /* CONFIG_PM */
1044 static int snd_via82xx_free(via82xx_t
*chip
)
1050 /* disable interrupts */
1051 for (i
= 0; i
< chip
->num_devs
; i
++)
1052 snd_via82xx_channel_reset(chip
, &chip
->devs
[i
]);
1053 synchronize_irq(chip
->irq
);
1056 free_irq(chip
->irq
, (void *)chip
);
1057 pci_release_regions(chip
->pci
);
1058 pci_disable_device(chip
->pci
);
1063 static int snd_via82xx_dev_free(snd_device_t
*device
)
1065 via82xx_t
*chip
= device
->device_data
;
1066 return snd_via82xx_free(chip
);
1069 static int __devinit
snd_via82xx_create(snd_card_t
* card
,
1070 struct pci_dev
*pci
,
1073 unsigned int ac97_clock
,
1078 static snd_device_ops_t ops
= {
1079 .dev_free
= snd_via82xx_dev_free
,
1082 if ((err
= pci_enable_device(pci
)) < 0)
1085 if ((chip
= kzalloc(sizeof(*chip
), GFP_KERNEL
)) == NULL
) {
1086 pci_disable_device(pci
);
1090 spin_lock_init(&chip
->reg_lock
);
1095 if ((err
= pci_request_regions(pci
, card
->driver
)) < 0) {
1097 pci_disable_device(pci
);
1100 chip
->port
= pci_resource_start(pci
, 0);
1101 if (request_irq(pci
->irq
, snd_via82xx_interrupt
, SA_INTERRUPT
|SA_SHIRQ
,
1102 card
->driver
, (void *)chip
)) {
1103 snd_printk(KERN_ERR
"unable to grab IRQ %d\n", pci
->irq
);
1104 snd_via82xx_free(chip
);
1107 chip
->irq
= pci
->irq
;
1108 if (ac97_clock
>= 8000 && ac97_clock
<= 48000)
1109 chip
->ac97_clock
= ac97_clock
;
1110 synchronize_irq(chip
->irq
);
1112 if ((err
= snd_via82xx_chip_init(chip
)) < 0) {
1113 snd_via82xx_free(chip
);
1117 if ((err
= snd_device_new(card
, SNDRV_DEV_LOWLEVEL
, chip
, &ops
)) < 0) {
1118 snd_via82xx_free(chip
);
1122 /* The 8233 ac97 controller does not implement the master bit
1123 * in the pci command register. IMHO this is a violation of the PCI spec.
1124 * We call pci_set_master here because it does not hurt. */
1125 pci_set_master(pci
);
1127 snd_card_set_dev(card
, &pci
->dev
);
1134 static int __devinit
snd_via82xx_probe(struct pci_dev
*pci
,
1135 const struct pci_device_id
*pci_id
)
1139 unsigned char revision
;
1140 int chip_type
= 0, card_type
;
1144 card
= snd_card_new(index
, id
, THIS_MODULE
, 0);
1148 card_type
= pci_id
->driver_data
;
1149 pci_read_config_byte(pci
, PCI_REVISION_ID
, &revision
);
1150 switch (card_type
) {
1151 case TYPE_CARD_VIA82XX_MODEM
:
1152 strcpy(card
->driver
, "VIA82XX-MODEM");
1153 sprintf(card
->shortname
, "VIA 82XX modem");
1156 snd_printk(KERN_ERR
"invalid card type %d\n", card_type
);
1161 if ((err
= snd_via82xx_create(card
, pci
, chip_type
, revision
,
1162 ac97_clock
, &chip
)) < 0)
1164 if ((err
= snd_via82xx_mixer_new(chip
)) < 0)
1167 if ((err
= snd_via686_pcm_new(chip
)) < 0 )
1170 snd_card_set_pm_callback(card
, snd_via82xx_suspend
, snd_via82xx_resume
, chip
);
1172 /* disable interrupts */
1173 for (i
= 0; i
< chip
->num_devs
; i
++)
1174 snd_via82xx_channel_reset(chip
, &chip
->devs
[i
]);
1176 sprintf(card
->longname
, "%s at 0x%lx, irq %d",
1177 card
->shortname
, chip
->port
, chip
->irq
);
1179 snd_via82xx_proc_init(chip
);
1181 if ((err
= snd_card_register(card
)) < 0) {
1182 snd_card_free(card
);
1185 pci_set_drvdata(pci
, card
);
1189 snd_card_free(card
);
1193 static void __devexit
snd_via82xx_remove(struct pci_dev
*pci
)
1195 snd_card_free(pci_get_drvdata(pci
));
1196 pci_set_drvdata(pci
, NULL
);
1199 static struct pci_driver driver
= {
1200 .name
= "VIA 82xx Modem",
1201 .owner
= THIS_MODULE
,
1202 .id_table
= snd_via82xx_modem_ids
,
1203 .probe
= snd_via82xx_probe
,
1204 .remove
= __devexit_p(snd_via82xx_remove
),
1205 SND_PCI_PM_CALLBACKS
1208 static int __init
alsa_card_via82xx_init(void)
1210 return pci_register_driver(&driver
);
1213 static void __exit
alsa_card_via82xx_exit(void)
1215 pci_unregister_driver(&driver
);
1218 module_init(alsa_card_via82xx_init
)
1219 module_exit(alsa_card_via82xx_exit
)