diff options
Diffstat (limited to 'sound/pci')
| -rw-r--r-- | sound/pci/hda/hda_tegra.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/sound/pci/hda/hda_tegra.c b/sound/pci/hda/hda_tegra.c index 95df52b0505b..2347d0304f93 100644 --- a/sound/pci/hda/hda_tegra.c +++ b/sound/pci/hda/hda_tegra.c @@ -315,6 +315,18 @@ static int hda_tegra_first_init(struct azx *chip, struct platform_device *pdev) * hardcoded value */ chip->capture_streams = (gcap >> 8) & 0x0f; + + /* The GCAP register on Tegra234 implies no Input Streams(ISS) support, + * but the HW output stream descriptor programming should start with + * offset 0x20*4 from base stream descriptor address. This will be a + * problem while calculating the offset for output stream descriptor + * which will be considering input stream also. So here output stream + * starts with offset 0 which is wrong as HW register for output stream + * offset starts with 4. + */ + if (of_device_is_compatible(np, "nvidia,tegra234-hda")) + chip->capture_streams = 4; + chip->playback_streams = (gcap >> 12) & 0x0f; if (!chip->playback_streams && !chip->capture_streams) { /* gcap didn't give any info, switching to old method */ |