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author | Yanteng Si <siyanteng@loongson.cn> | 2023-06-07 12:21:51 +0300 |
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committer | Takashi Iwai <tiwai@suse.de> | 2023-06-07 13:41:21 +0300 |
commit | 942ccdd834f43b498abc3f022b73fb831d78f5f7 (patch) | |
tree | 49f5f1b4771e2bfa117c10f43e3b8bf712086432 /sound/hda/hdac_stream.c | |
parent | cbc3e98acf802c8939e14103a059db60499d69eb (diff) | |
download | linux-942ccdd834f43b498abc3f022b73fb831d78f5f7.tar.xz |
ALSA: hda: Workaround for SDnCTL register on loongson
On loongson controller, after calling snd_hdac_stream_updateb()
to enable DMA engine, the SDnCTL.STRM will become to zero. We
need to access SDnCTL in dword to keep SDnCTL.STRM is not changed.
Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Signed-off-by: Yingkun Meng <mengyingkun@loongson.cn>
Acked-by: Huacai Chen <chenhuacai@loongson.cn>
Link: https://lore.kernel.org/r/27aeddf5ebbe7c69631cec0e489c1b264be94990.1686128807.git.siyanteng@loongson.cn
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/hda/hdac_stream.c')
-rw-r--r-- | sound/hda/hdac_stream.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/sound/hda/hdac_stream.c b/sound/hda/hdac_stream.c index 1f56fd33b9af..2633a4bb1d85 100644 --- a/sound/hda/hdac_stream.c +++ b/sound/hda/hdac_stream.c @@ -150,7 +150,11 @@ void snd_hdac_stream_start(struct hdac_stream *azx_dev) stripe_ctl); } /* set DMA start and interrupt mask */ - snd_hdac_stream_updateb(azx_dev, SD_CTL, + if (bus->access_sdnctl_in_dword) + snd_hdac_stream_updatel(azx_dev, SD_CTL, + 0, SD_CTL_DMA_START | SD_INT_MASK); + else + snd_hdac_stream_updateb(azx_dev, SD_CTL, 0, SD_CTL_DMA_START | SD_INT_MASK); azx_dev->running = true; } |