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| author | Takashi Iwai | 2008-02-06 15:05:57 +0100 |
|---|---|---|
| committer | Takashi Iwai | 2008-04-24 12:00:08 +0200 |
| commit | cf7aaca8bae3a719db47ff6eca5f6f2f42eba05a (patch) | |
| tree | 2af8d01bc049db833e87602ea25ab1abe8f91cd8 /sound/pci/hda/hda_intel.c | |
| parent | [ALSA] hda-intel - Use SG buffer (diff) | |
| download | kernel-qcow2-linux-cf7aaca8bae3a719db47ff6eca5f6f2f42eba05a.tar.gz kernel-qcow2-linux-cf7aaca8bae3a719db47ff6eca5f6f2f42eba05a.tar.xz kernel-qcow2-linux-cf7aaca8bae3a719db47ff6eca5f6f2f42eba05a.zip | |
[ALSA] hda-intel - Support 64bit buffer allocation
The HD-audio hardware usually supports 64bit address for DMA and other
buffers. The patch enables the feature if supported.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/hda/hda_intel.c')
| -rw-r--r-- | sound/pci/hda/hda_intel.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c index b38a5a70ff08..ec3ddda30beb 100644 --- a/sound/pci/hda/hda_intel.c +++ b/sound/pci/hda/hda_intel.c @@ -1843,6 +1843,10 @@ static int __devinit azx_create(struct snd_card *card, struct pci_dev *pci, gcap = azx_readw(chip, GCAP); snd_printdd("chipset global capabilities = 0x%x\n", gcap); + /* allow 64bit DMA address if supported by H/W */ + if ((gcap & 0x01) && !pci_set_dma_mask(pci, DMA_64BIT_MASK)) + pci_set_consistent_dma_mask(pci, DMA_64BIT_MASK); + if (gcap) { /* read number of streams from GCAP register instead of using * hardcoded value |