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[ALSA] atiixp - Add a parameter ac97_quirk

Add an option to specify the AC'97 codec instead of
probing.  This is a fix for bugzilla #7467.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
imx_3.10.17_1.0.0_ga
Dan Carpenter 14 years ago
committed by Jaroslav Kysela
parent
commit
14e1d357e4
2 changed files with 51 additions and 0 deletions
  1. +6
    -0
      Documentation/sound/alsa/ALSA-Configuration.txt
  2. +45
    -0
      sound/pci/atiixp.c

+ 6
- 0
Documentation/sound/alsa/ALSA-Configuration.txt View File

@ -242,6 +242,12 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
ac97_clock - AC'97 clock (default = 48000)
ac97_quirk - AC'97 workaround for strange hardware
See "AC97 Quirk Option" section below.
ac97_codec - Workaround to specify which AC'97 codec
instead of probing. If this works for you
file a bug with your `lspci -vn` output.
-2 -- Force probing.
-1 -- Default behavior.
0-2 -- Use the specified codec.
spdif_aclink - S/PDIF transfer over AC-link (default = 1)
This module supports one card and autoprobe.


+ 45
- 0
sound/pci/atiixp.c View File

@ -45,6 +45,7 @@ static char *id = SNDRV_DEFAULT_STR1; /* ID for this card */
static int ac97_clock = 48000;
static char *ac97_quirk;
static int spdif_aclink = 1;
static int ac97_codec = -1;
module_param(index, int, 0444);
MODULE_PARM_DESC(index, "Index value for ATI IXP controller.");
@ -54,6 +55,8 @@ module_param(ac97_clock, int, 0444);
MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz).");
module_param(ac97_quirk, charp, 0444);
MODULE_PARM_DESC(ac97_quirk, "AC'97 workaround for strange hardware.");
module_param(ac97_codec, int, 0444);
MODULE_PARM_DESC(ac97_codec, "Specify codec instead of probing.");
module_param(spdif_aclink, bool, 0444);
MODULE_PARM_DESC(spdif_aclink, "S/PDIF over AC-link.");
@ -293,6 +296,22 @@ static struct pci_device_id snd_atiixp_ids[] = {
MODULE_DEVICE_TABLE(pci, snd_atiixp_ids);
struct atiixp_quirk {
unsigned short subvendor;
unsigned short subdevice;
const char *name;
int ac97_codec;
};
static struct atiixp_quirk atiixp_quirks[] __devinitdata = {
{
.subvendor = 0x15bd,
.subdevice = 0x3100,
.name = "DFI RS482",
.ac97_codec = 0,
},
{ .subvendor = 0 } /* terminator */
};
/*
* lowlevel functions
@ -553,11 +572,37 @@ static int snd_atiixp_aclink_down(struct atiixp *chip)
ATI_REG_ISR_CODEC2_NOT_READY)
#define CODEC_CHECK_BITS (ALL_CODEC_NOT_READY|ATI_REG_ISR_NEW_FRAME)
static int ac97_probing_bugs(struct pci_dev *pci)
{
int i = 0;
while (atiixp_quirks[i].subvendor) {
if (pci->subsystem_vendor == atiixp_quirks[i].subvendor &&
pci->subsystem_device == atiixp_quirks[i].subdevice) {
printk(KERN_INFO "Atiixp quirk for %s. "
"Forcing codec %d\n", atiixp_quirks[i].name,
atiixp_quirks[i].ac97_codec);
return atiixp_quirks[i].ac97_codec;
}
i++;
}
/* this hardware doesn't need workarounds. Probe for codec */
return -1;
}
static int snd_atiixp_codec_detect(struct atiixp *chip)
{
int timeout;
chip->codec_not_ready_bits = 0;
if (ac97_codec == -1)
ac97_codec = ac97_probing_bugs(chip->pci);
if (ac97_codec >= 0) {
chip->codec_not_ready_bits |=
CODEC_CHECK_BITS ^ (1 << (ac97_codec + 10));
return 0;
}
atiixp_write(chip, IER, CODEC_CHECK_BITS);
/* wait for the interrupts */
timeout = 50;


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