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[ALSA] hda-intel - Fix power-off hang on ASUS P5AD2 

The hda-intel driver has a problem at power-off on ASUS P5AD2.
It's caused when the position-buffer is enabled -- most likely a
hardware-specific problem.

This patch adds a quirk to avoid the unnecessary enablement of
position-buffer.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2008-03-14 15:52:20 +01:00
parent 3da23cac3d
commit ee9d6b9a30
1 changed files with 7 additions and 3 deletions
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10
sound/pci/hda/hda_intel.c
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@ -1059,9 +1059,12 @@ static int azx_setup_controller(struct azx *chip, struct azx_dev *azx_dev)
azx_sd_writel(azx_dev, SD_BDLPU, upper_32bit(azx_dev->bdl.addr));
/* enable the position buffer */
if (!(azx_readl(chip, DPLBASE) & ICH6_DPLBASE_ENABLE))
azx_writel(chip, DPLBASE,
(u32)chip->posbuf.addr |ICH6_DPLBASE_ENABLE);
if (chip->position_fix == POS_FIX_POSBUF ||
chip->position_fix == POS_FIX_AUTO) {
if (!(azx_readl(chip, DPLBASE) & ICH6_DPLBASE_ENABLE))
azx_writel(chip, DPLBASE,
(u32)chip->posbuf.addr | ICH6_DPLBASE_ENABLE);
}
/* set the interrupt enable bits in the descriptor control register */
azx_sd_writel(azx_dev, SD_CTL,
@ -1707,6 +1710,7 @@ static int azx_dev_free(struct snd_device *device)
static struct snd_pci_quirk position_fix_list[] __devinitdata = {
SND_PCI_QUIRK(0x1028, 0x01cc, "Dell D820", POS_FIX_NONE),
SND_PCI_QUIRK(0x1028, 0x01de, "Dell Precision 390", POS_FIX_NONE),
SND_PCI_QUIRK(0x1043, 0x813d, "ASUS P5AD2", POS_FIX_NONE),
{}
};