linux-kernel - [PATCH 06/10] dma: imx-sdma: add terminate

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Message-ID: <1463456876-10580-7-git-send-email-jiada_wang@mentor.com>
Date:	Tue, 17 May 2016 12:47:52 +0900
From:	Jiada Wang <jiada_wang@...tor.com>
To:	<vinod.koul@...el.com>, <dan.j.williams@...el.com>
CC:	<dmaengine@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<shawnguo@...nel.com>, <kernel@...gutronix.de>,
	<george_davis@...tor.com>, <jiada_wang@...tor.com>
Subject: [PATCH 06/10] dma: imx-sdma: add terminate_all support

Implement device_terminate_all(), so that dmaengine_terminate_async()
can work.

Signed-off-by: Jiada Wang <jiada_wang@...tor.com>
---
 drivers/dma/imx-sdma.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
index ef5d37c..040cbf2 100644
--- a/drivers/dma/imx-sdma.c
+++ b/drivers/dma/imx-sdma.c
@@ -1401,6 +1401,13 @@ static void sdma_issue_pending(struct dma_chan *chan)
 		sdma_enable_channel(sdma, sdmac->channel);
 }
 
+static int sdma_terminate_all(struct dma_chan *chan)
+{
+	sdma_disable_channel(chan);
+
+	return 0;
+}
+
 #define SDMA_SCRIPT_ADDRS_ARRAY_SIZE_V1	34
 #define SDMA_SCRIPT_ADDRS_ARRAY_SIZE_V2	38
 #define SDMA_SCRIPT_ADDRS_ARRAY_SIZE_V3	41
@@ -1819,6 +1826,7 @@ static int sdma_probe(struct platform_device *pdev)
 	sdma->dma_device.directions = BIT(DMA_DEV_TO_MEM) | BIT(DMA_MEM_TO_DEV);
 	sdma->dma_device.residue_granularity = DMA_RESIDUE_GRANULARITY_BURST;
 	sdma->dma_device.device_issue_pending = sdma_issue_pending;
+	sdma->dma_device.device_terminate_all = sdma_terminate_all;
 	sdma->dma_device.dev->dma_parms = &sdma->dma_parms;
 	dma_set_max_seg_size(sdma->dma_device.dev, 65535);
 
-- 
2.4.5