linux-kernel - [RFC v02 06/15] ARM: davinci: dm355: Add dma_filter

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Date:	Mon, 30 Nov 2015 15:45:36 +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 06/15] ARM: davinci: dm355: 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/dm355.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/arch/arm/mach-davinci/dm355.c b/arch/arm/mach-davinci/dm355.c
index 609950b8c191..dc8d7ccf69f4 100644
--- a/arch/arm/mach-davinci/dm355.c
+++ b/arch/arm/mach-davinci/dm355.c
@@ -13,6 +13,7 @@
 #include <linux/serial_8250.h>
 #include <linux/platform_device.h>
 #include <linux/dma-mapping.h>
+#include <linux/dmaengine.h>
 #include <linux/spi/spi.h>
 #include <linux/platform_data/edma.h>
 #include <linux/platform_data/gpio-davinci.h>
@@ -576,9 +577,28 @@ static s8 queue_priority_mapping[][2] = {
 	{-1, -1},
 };
 
+static struct dma_filter_map da355_edma_map[] = {
+	DMA_FILTER_ENTRY("davinci-mcbsp.0", "tx", EDMA_CTLR_CHAN(0, 2)),
+	DMA_FILTER_ENTRY("davinci-mcbsp.0", "rx", EDMA_CTLR_CHAN(0, 3)),
+	DMA_FILTER_ENTRY("davinci-mcbsp.1", "tx", EDMA_CTLR_CHAN(0, 8)),
+	DMA_FILTER_ENTRY("davinci-mcbsp.1", "rx", EDMA_CTLR_CHAN(0, 9)),
+	DMA_FILTER_ENTRY("spi_davinci.2", "tx", EDMA_CTLR_CHAN(0, 10)),
+	DMA_FILTER_ENTRY("spi_davinci.2", "rx", EDMA_CTLR_CHAN(0, 11)),
+	DMA_FILTER_ENTRY("spi_davinci.1", "tx", EDMA_CTLR_CHAN(0, 14)),
+	DMA_FILTER_ENTRY("spi_davinci.1", "rx", EDMA_CTLR_CHAN(0, 15)),
+	DMA_FILTER_ENTRY("spi_davinci.0", "tx", EDMA_CTLR_CHAN(0, 16)),
+	DMA_FILTER_ENTRY("spi_davinci.0", "rx", EDMA_CTLR_CHAN(0, 17)),
+	DMA_FILTER_ENTRY("dm6441-mmc.0", "rx", EDMA_CTLR_CHAN(0, 26)),
+	DMA_FILTER_ENTRY("dm6441-mmc.0", "tx", EDMA_CTLR_CHAN(0, 27)),
+	DMA_FILTER_ENTRY("dm6441-mmc.1", "rx", EDMA_CTLR_CHAN(0, 30)),
+	DMA_FILTER_ENTRY("dm6441-mmc.1", "tx", EDMA_CTLR_CHAN(0, 31)),
+};
+
 static struct edma_soc_info dm355_edma_pdata = {
 	.queue_priority_mapping	= queue_priority_mapping,
 	.default_queue		= EVENTQ_1,
+	.filter_map		= da355_edma_map,
+	.filtercnt		= ARRAY_SIZE(da355_edma_map),
 };
 
 static struct resource edma_resources[] = {
-- 
2.6.3

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