From be869d501832721836cf93bb760f598652f1b192 Mon Sep 17 00:00:00 2001
From: Robin Gong <yibin.gong@nxp.com>
Date: Tue, 24 Jul 2018 22:07:33 +0800
Subject: [PATCH] MLK-19022-1: dmaengine: fsl-edma: add device_synchronize
Add device_synchronize for edma driver, since some driver such as
Audio need it to make sure dma done callback never come out after
resource related with dma channel free-ed by Audio driver.
Signed-off-by: Robin Gong <yibin.gong@nxp.com>
(cherry picked from commit cd2d1200280fe573ac4eac5e27675f1b2ea638c4)
Signed-off-by: Vipul Kumar <vipul_kumar@mentor.com>
Signed-off-by: Srikanth Krishnakar <Srikanth_Krishnakar@mentor.com>
---
drivers/dma/fsl-edma.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/dma/fsl-edma.c b/drivers/dma/fsl-edma.c
index f7dc3cf1955d16..56cb89c1d68638 100644
--- a/drivers/dma/fsl-edma.c
+++ b/drivers/dma/fsl-edma.c
@@ -996,6 +996,13 @@ fsl_edma2_irq_init(struct platform_device *pdev,
return 0;
}
+static void fsl_edma_synchronize(struct dma_chan *chan)
+{
+ struct fsl_edma_chan *fsl_chan = to_fsl_edma_chan(chan);
+
+ vchan_synchronize(&fsl_chan->vchan);
+}
+
static int fsl_edma_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
@@ -1123,6 +1130,7 @@ static int fsl_edma_probe(struct platform_device *pdev)
fsl_edma->dma_dev.device_resume = fsl_edma_device_resume;
fsl_edma->dma_dev.device_terminate_all = fsl_edma_terminate_all;
fsl_edma->dma_dev.device_issue_pending = fsl_edma_issue_pending;
+ fsl_edma->dma_dev.device_synchronize = fsl_edma_synchronize;
fsl_edma->dma_dev.src_addr_widths = FSL_EDMA_BUSWIDTHS;
fsl_edma->dma_dev.dst_addr_widths = FSL_EDMA_BUSWIDTHS;
--
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