diff mbox

Applied "ASoC: Intel: Skylake: Fix dma buffer size calculation" to the asoc tree

Message ID E1dMzT4-0002Pd-Bc@debutante
State New, archived
Headers show

Commit Message

Mark Brown June 19, 2017, 4:23 p.m. UTC
The patch

   ASoC: Intel: Skylake: Fix dma buffer size calculation

has been applied to the asoc tree at


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tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
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From f6e6ab1d16ec9dafa65557b5637f5217b32702ef Mon Sep 17 00:00:00 2001
From: Ramesh Babu <ramesh.babu@intel.com>
Date: Mon, 19 Jun 2017 11:59:20 +0530
Subject: [PATCH] ASoC: Intel: Skylake: Fix dma buffer size calculation

DMA buffer size for gateway copier will be calculated based on:

For host DMA copier:
Input buffer size (ibs) for output direction (playback)
Output buffer size (obs) for input direction (capture)

For link DMA copier:
IBS for input direction (capture)
OBS for output direction (playback)

Update the driver to use the above.

Signed-off-by: Ramesh Babu <ramesh.babu@intel.com>
Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
Acked-By: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
 sound/soc/intel/skylake/skl-messages.c | 29 +++++++++++++++++++++++++----
 1 file changed, 25 insertions(+), 4 deletions(-)
diff mbox


diff --git a/sound/soc/intel/skylake/skl-messages.c b/sound/soc/intel/skylake/skl-messages.c
index 5a465020ebd8..eca85827dbd2 100644
--- a/sound/soc/intel/skylake/skl-messages.c
+++ b/sound/soc/intel/skylake/skl-messages.c
@@ -507,6 +507,8 @@  static void skl_setup_cpr_gateway_cfg(struct skl_sst *ctx,
 			struct skl_module_cfg *mconfig,
 			struct skl_cpr_cfg *cpr_mconfig)
+	u32 dma_io_buf;
 	cpr_mconfig->gtw_cfg.node_id = skl_get_node_id(ctx, mconfig);
 	if (cpr_mconfig->gtw_cfg.node_id == SKL_NON_GATEWAY_CPR_NODE_ID) {
@@ -514,10 +516,29 @@  static void skl_setup_cpr_gateway_cfg(struct skl_sst *ctx,
-	if (SKL_CONN_SOURCE == mconfig->hw_conn_type)
-		cpr_mconfig->gtw_cfg.dma_buffer_size = 2 * mconfig->obs;
-	else
-		cpr_mconfig->gtw_cfg.dma_buffer_size = 2 * mconfig->ibs;
+	switch (mconfig->hw_conn_type) {
+		if (mconfig->dev_type == SKL_DEVICE_HDAHOST)
+			dma_io_buf =  mconfig->ibs;
+		else
+			dma_io_buf =  mconfig->obs;
+		break;
+		if (mconfig->dev_type == SKL_DEVICE_HDAHOST)
+			dma_io_buf =  mconfig->obs;
+		else
+			dma_io_buf =  mconfig->ibs;
+		break;
+	default:
+		dev_warn(ctx->dev, "wrong connection type: %d\n",
+				mconfig->hw_conn_type);
+		return;
+	}
+	cpr_mconfig->gtw_cfg.dma_buffer_size =
+				mconfig->dma_buffer_size * dma_io_buf;
 	cpr_mconfig->cpr_feature_mask = 0;
 	cpr_mconfig->gtw_cfg.config_length  = 0;