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[PATCH 08/10] dmaengine: sun6i: Add support for Allwinner A64 and compatibles

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The A64 SoC has the same dma engine as the H3 (sun8i), with a
reduced amount of physical channels. To allow future reuse of the
compatible, leave the channel count etc. in the config data blank
and retrieve it from the devicetree.

Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de>
---
 drivers/dma/sun6i-dma.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/dma/sun6i-dma.c b/drivers/dma/sun6i-dma.c
index bd4c2e4a759b..4fae7ffad549 100644
--- a/drivers/dma/sun6i-dma.c
+++ b/drivers/dma/sun6i-dma.c
@@ -1076,6 +1076,16 @@ static struct sun6i_dma_config sun8i_h3_dma_cfg = {
 	.nr_max_vchans   = 34,
 	.dmac_variant    = DMAC_VARIANT_H3,
 };
+
+/*
+ * The A64 binding uses the number of dma channels from the
+ * device tree node.
+ */
+static struct sun6i_dma_config sun50i_a64_dma_cfg = {
+	.nr_max_channels = 0,
+	.nr_max_requests = 0,
+	.nr_max_vchans   = 0,
+	.dmac_variant    = DMAC_VARIANT_H3,
 };
 
 static const struct of_device_id sun6i_dma_match[] = {
@@ -1083,6 +1093,7 @@ static const struct of_device_id sun6i_dma_match[] = {
 	{ .compatible = "allwinner,sun8i-a23-dma", .data = &sun8i_a23_dma_cfg },
 	{ .compatible = "allwinner,sun8i-a83t-dma", .data = &sun8i_a83t_dma_cfg },
 	{ .compatible = "allwinner,sun8i-h3-dma", .data = &sun8i_h3_dma_cfg },
+	{ .compatible = "allwinner,sun50i-a64-dma", .data = &sun50i_a64_dma_cfg },
 	{ /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, sun6i_dma_match);
@@ -1090,6 +1101,7 @@ MODULE_DEVICE_TABLE(of, sun6i_dma_match);
 static int sun6i_dma_probe(struct platform_device *pdev)
 {
 	const struct of_device_id *device;
+	struct device_node *np = pdev->dev.of_node;
 	struct sun6i_dma_dev *sdc;
 	struct resource *res;
 	int ret, i;
-- 
2.14.1

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[PATCH 00/10] dmaengine: sun6i: Fixes for H3/A83T, enable A64 Stefan Brüns <stefan.bruens@rwth-aachen.de> - 2017-09-04 00:50 +0200
  [PATCH 01/10] dmaengine: sun6i: Correct setting of clock autogating register for A83T/H3 Stefan Brüns <stefan.bruens@rwth-aachen.de> - 2017-09-04 00:50 +0200
    Re: [PATCH 01/10] dmaengine: sun6i: Correct setting of clock  autogating register for A83T/H3 André Przywara <andre.przywara@arm.com> - 2017-09-04 01:30 +0200
      Re: [PATCH 01/10] dmaengine: sun6i: Correct setting of clock  autogating register for A83T/H3 Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-09-04 09:10 +0200
  [PATCH 02/10] dmaengine: sun6i: Correct burst length field offsets for H3 Stefan Brüns <stefan.bruens@rwth-aachen.de> - 2017-09-04 00:50 +0200
    Re: [PATCH 02/10] dmaengine: sun6i: Correct burst length field  offsets for H3 Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-09-04 10:00 +0200
      Re: [PATCH 02/10] dmaengine: sun6i: Correct burst length field  offsets for H3 Brüns, Stefan <Stefan.Bruens@rwth-aachen.de> - 2017-09-04 16:50 +0200
  [PATCH 09/10] arm64: allwinner: a64: Add device node for DMA controller Stefan Brüns <stefan.bruens@rwth-aachen.de> - 2017-09-04 00:50 +0200
  [PATCH 08/10] dmaengine: sun6i: Add support for Allwinner A64 and compatibles Stefan Brüns <stefan.bruens@rwth-aachen.de> - 2017-09-04 00:50 +0200
    Re: [PATCH 08/10] dmaengine: sun6i: Add support for Allwinner A64 and  compatibles André Przywara <andre.przywara@arm.com> - 2017-09-04 01:50 +0200
      Re: [PATCH 08/10] dmaengine: sun6i: Add support for Allwinner A64 and compatibles Stefan Bruens <stefan.bruens@rwth-aachen.de> - 2017-09-04 02:20 +0200

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