53 lines
1.9 KiB
Diff
53 lines
1.9 KiB
Diff
From c2939bfa637f9684409a25fe987481aab817dc49 Mon Sep 17 00:00:00 2001
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From: "Pawse, GuruprasadX" <guruprasadx.pawse@intel.com>
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Date: Tue, 14 Jun 2016 16:37:20 +0530
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Subject: [PATCH 258/743] ASoC: Intel: Skylake:Probe-Increase the DMA buffer
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size
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DMA buffer size needed for 48KHz, 4 channel, 32 bit data scheduled
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at 4ms for 2 probe packets is = 2* [ 24 + (48*4*4*32/8) + 8] = 6208.
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This is the worst case buffer for current set of usecases.
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Increase the DMA buffer size to this value for now until an optimal
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buffer size value is arrived at.
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Change-Id: I4b902f8c078a9a3c2e19c82b0ebeaf99dd99c2b1
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Signed-off-by: Pawse, GuruprasadX <guruprasadx.pawse@intel.com>
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Reviewed-on:
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Reviewed-by: Babu, Ramesh <ramesh.babu@intel.com>
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Tested-by: Babu, Ramesh <ramesh.babu@intel.com>
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---
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sound/soc/intel/skylake/skl-probe.c | 10 ++++++++--
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1 file changed, 8 insertions(+), 2 deletions(-)
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diff --git a/sound/soc/intel/skylake/skl-probe.c b/sound/soc/intel/skylake/skl-probe.c
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index 507513eabbd6..9c4d96ecc762 100644
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--- a/sound/soc/intel/skylake/skl-probe.c
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+++ b/sound/soc/intel/skylake/skl-probe.c
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@@ -30,6 +30,13 @@
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#define USE_SPIB 0
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+/*
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+ * DMA buffer size needed for 48KHz, 4 channel, 32 bit data
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+ * scheduled at 4ms for 2 probe packets is
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+ * 2* [ 24 + (48*4*4*32/8) + 8] = 6208.
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+ */
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+#define SKL_EXTRACT_PROBE_DMA_BUFF_SIZE 6208
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+
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static int set_injector_stream(struct hdac_ext_stream *stream,
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struct snd_soc_dai *dai)
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{
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@@ -62,8 +69,7 @@ int skl_probe_compr_open(struct snd_compr_stream *substream,
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dev_dbg(dai->dev, "%s dev is %s\n", __func__, dev_name(dai->dev));
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if (!pconfig->probe_count) {
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- /*TODO: Configuring the right DMA buffer size*/
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- pconfig->edma_buffsize = 832;
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+ pconfig->edma_buffsize = SKL_EXTRACT_PROBE_DMA_BUFF_SIZE;
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pconfig->edma_type = SKL_DMA_HDA_HOST_INPUT_CLASS;
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pconfig->estream = hdac_ext_host_stream_compr_assign(ebus,
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substream,
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--
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2.19.2
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