From: jeeja.kp@intel.com
To: alsa-devel@alsa-project.org
Cc: tiwai@suse.de, patches.audio@intel.com, broonie@kernel.org,
liam.r.girdwood@intel.com, Jeeja KP <jeeja.kp@intel.com>
Subject: [PATCH v5 2/3] ASoC: Intel: Skylake: set the resume point to LPIB
Date: Tue, 10 Jan 2017 17:57:47 +0530 [thread overview]
Message-ID: <1484051268-9526-3-git-send-email-jeeja.kp@intel.com> (raw)
In-Reply-To: <1484051268-9526-1-git-send-email-jeeja.kp@intel.com>
From: Jeeja KP <jeeja.kp@intel.com>
In system suspend, the firmware pipelines will be deleted and there
is no need to save the pipeline context. Driver will save the DPIB and
LPIB pointers in suspend.
In system resume, the firmware pipelines will be created again and the
RD/RW pointers in the Firmware buffer points to the base address. So
need to fetch the non-played data again to firmware buffer. LPIB
indicates the HW rendered position.
Instead of setting DPIB as resume point, set it to LPIB to restore from
the HW render position so that DMA would fetch the non-played data one
more time.
Signed-off-by: Jeeja KP <jeeja.kp@intel.com>
---
sound/soc/intel/skylake/skl-pcm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/sound/soc/intel/skylake/skl-pcm.c b/sound/soc/intel/skylake/skl-pcm.c
index aefcfca..ae7997a 100644
--- a/sound/soc/intel/skylake/skl-pcm.c
+++ b/sound/soc/intel/skylake/skl-pcm.c
@@ -474,7 +474,7 @@ static int skl_pcm_trigger(struct snd_pcm_substream *substream, int cmd,
snd_hdac_ext_stream_drsm_enable(ebus, true,
hdac_stream(stream)->index);
snd_hdac_ext_stream_set_dpibr(ebus, stream,
- stream->dpib);
+ stream->lpib);
snd_hdac_ext_stream_set_lpib(stream, stream->lpib);
}
--
2.5.0
next prev parent reply other threads:[~2017-01-10 12:16 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-10 12:27 [PATCH v5 0/3] ASoC: Intel: Skylake: Driver updates jeeja.kp
2017-01-10 12:27 ` [PATCH v5 1/3] ASoC: Intel: Skylake: Don't reset pass-through pipe in BE prepare jeeja.kp
2017-01-10 12:27 ` jeeja.kp [this message]
2017-01-10 12:27 ` [PATCH v5 3/3] ASoC: hdac_hdmi: Enable pin and converter in prepare jeeja.kp
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