linux-kernel - [RFC v02 09/15] ARM: davinci: dm646x: Add dma_filter

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Date:	Mon, 30 Nov 2015 15:45:39 +0200
From:	Peter Ujfalusi <peter.ujfalusi@...com>
To:	<vinod.koul@...el.com>, <arnd@...db.de>,
	<andy.shevchenko@...il.com>
CC:	<linux-kernel@...r.kernel.org>, <dmaengine@...r.kernel.org>,
	<linux-omap@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-mmc@...r.kernel.org>, <nsekhar@...com>,
	<linux-spi@...r.kernel.org>
Subject: [RFC v02 09/15] ARM: davinci: dm646x: Add dma_filter_map to edma

Provide the dma_filter_map to edma which will allow us to move the drivers
to the new, simpler dmaengine API and we can remove the DMA resources also
for the devices.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@...com>
---
 arch/arm/mach-davinci/dm646x.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/arch/arm/mach-davinci/dm646x.c b/arch/arm/mach-davinci/dm646x.c
index 70eb42725eec..560841a0c4fa 100644
--- a/arch/arm/mach-davinci/dm646x.c
+++ b/arch/arm/mach-davinci/dm646x.c
@@ -9,6 +9,7 @@
  * or implied.
  */
 #include <linux/dma-mapping.h>
+#include <linux/dmaengine.h>
 #include <linux/init.h>
 #include <linux/clk.h>
 #include <linux/serial_8250.h>
@@ -540,9 +541,19 @@ static s8 dm646x_queue_priority_mapping[][2] = {
 	{-1, -1},
 };
 
+static struct dma_filter_map da646x_edma_map[] = {
+	DMA_FILTER_ENTRY("davinci-mcasp.0", "tx", EDMA_CTLR_CHAN(0, 6)),
+	DMA_FILTER_ENTRY("davinci-mcasp.0", "rx", EDMA_CTLR_CHAN(0, 9)),
+	DMA_FILTER_ENTRY("davinci-mcasp.1", "tx", EDMA_CTLR_CHAN(0, 12)),
+	DMA_FILTER_ENTRY("spi_davinci", "tx", EDMA_CTLR_CHAN(0, 16)),
+	DMA_FILTER_ENTRY("spi_davinci", "rx", EDMA_CTLR_CHAN(0, 17)),
+};
+
 static struct edma_soc_info dm646x_edma_pdata = {
 	.queue_priority_mapping	= dm646x_queue_priority_mapping,
 	.default_queue		= EVENTQ_1,
+	.filter_map		= da646x_edma_map,
+	.filtercnt		= ARRAY_SIZE(da646x_edma_map),
 };
 
 static struct resource edma_resources[] = {
-- 
2.6.3

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