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[ALSA] intel8x0 - Add buggy_semaphore option 

Documentation,Intel8x0 driver
Added buggy_semaphore module option to snd-intel8x0 driver
for a workaround for hardwards with buggy codec semaphores.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2005-09-08 19:54:17 +02:00 committed by Jaroslav Kysela
parent 10f69f9e42
commit a06147d228
2 changed files with 16 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

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

@ -805,7 +805,11 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
ac97_quirk - AC'97 workaround for strange hardware
See "AC97 Quirk Option" section below.
buggy_irq - Enable workaround for buggy interrupts on some
motherboards (default off)
motherboards (default yes on nForce chips,
otherwise off)
buggy_semaphore - Enable workaround for hardwares with buggy
semaphores (e.g. on some ASUS laptops)
(default off)
Module supports autoprobe and multiple bus-master chips (max 8).

12
sound/pci/intel8x0.c
View File

@ -69,6 +69,7 @@ static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */
static int ac97_clock[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 0};
static char *ac97_quirk[SNDRV_CARDS];
static int buggy_semaphore[SNDRV_CARDS];
static int buggy_irq[SNDRV_CARDS];
static int xbox[SNDRV_CARDS];
@ -86,6 +87,8 @@ module_param_array(ac97_clock, int, NULL, 0444);
MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (0 = auto-detect).");
module_param_array(ac97_quirk, charp, NULL, 0444);
MODULE_PARM_DESC(ac97_quirk, "AC'97 workaround for strange hardware.");
module_param_array(buggy_semaphore, bool, NULL, 0444);
MODULE_PARM_DESC(buggy_semaphore, "Enable workaround for hardwares with problematic codec semaphores.");
module_param_array(buggy_irq, bool, NULL, 0444);
MODULE_PARM_DESC(buggy_irq, "Enable workaround for buggy interrupts on some motherboards.");
module_param_array(xbox, bool, NULL, 0444);
@ -367,6 +370,7 @@ struct _snd_intel8x0 {
unsigned fix_nocache: 1; /* workaround for 440MX */
unsigned buggy_irq: 1; /* workaround for buggy mobos */
unsigned xbox: 1; /* workaround for Xbox AC'97 detection */
unsigned buggy_semaphore: 1; /* workaround for buggy codec semaphore */
int spdif_idx; /* SPDIF BAR index; *_SPBAR or -1 if use PCMOUT */
unsigned int sdm_saved; /* SDM reg value */
@ -521,6 +525,9 @@ static int snd_intel8x0_codec_semaphore(intel8x0_t *chip, unsigned int codec)
if ((igetdword(chip, ICHREG(GLOB_STA)) & codec) == 0)
return -EIO;
if (chip->buggy_semaphore)
return 0; /* just ignore ... */
/* Anyone holding a semaphore for 1 msec should be shot... */
time = 100;
do {
@ -2549,6 +2556,7 @@ struct ich_reg_info {
static int __devinit snd_intel8x0_create(snd_card_t * card,
struct pci_dev *pci,
unsigned long device_type,
int buggy_sem,
intel8x0_t ** r_intel8x0)
{
intel8x0_t *chip;
@ -2606,6 +2614,7 @@ static int __devinit snd_intel8x0_create(snd_card_t * card,
chip->card = card;
chip->pci = pci;
chip->irq = -1;
chip->buggy_semaphore = buggy_sem;
if (pci->vendor == PCI_VENDOR_ID_INTEL &&
pci->device == PCI_DEVICE_ID_INTEL_440MX)
@ -2810,7 +2819,8 @@ static int __devinit snd_intel8x0_probe(struct pci_dev *pci,
}
}
if ((err = snd_intel8x0_create(card, pci, pci_id->driver_data, &chip)) < 0) {
if ((err = snd_intel8x0_create(card, pci, pci_id->driver_data,
buggy_semaphore[dev], &chip)) < 0) {
snd_card_free(card);
return err;
}