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authorIcenowy Zheng <icenowy@aosc.xyz>2017-08-29 07:51:27 +0300
committerVinod Koul <vinod.koul@intel.com>2017-09-05 06:37:20 +0300
commita702e47eab32c643054c5055cf5ce320d59f4dee (patch)
tree2dee52c7cd203e940bfad277dc25e61c80bad1a4 /drivers/dma
parent0430a7c753744af746679a96026916b50908aafa (diff)
downloadlinux-a702e47eab32c643054c5055cf5ce320d59f4dee.tar.xz
dmaengine: sun6i: support V3s SoC variant
Allwinner V3s has a DMA engine similar to the ones from A31, but with fewer channels and DRQs. Add support for it. Signed-off-by: Icenowy Zheng <icenowy@aosc.xyz> Acked-by: Chen-Yu Tsai <wens@csie.org> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/dma')
-rw-r--r--drivers/dma/sun6i-dma.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/dma/sun6i-dma.c b/drivers/dma/sun6i-dma.c
index 252b59c1d1d5..bcd496edc70f 100644
--- a/drivers/dma/sun6i-dma.c
+++ b/drivers/dma/sun6i-dma.c
@@ -1040,11 +1040,24 @@ static struct sun6i_dma_config sun8i_h3_dma_cfg = {
.nr_max_vchans = 34,
};
+/*
+ * The V3s have only 8 physical channels, a maximum DRQ port id of 23,
+ * and a total of 24 usable source and destination endpoints.
+ */
+
+static struct sun6i_dma_config sun8i_v3s_dma_cfg = {
+ .nr_max_channels = 8,
+ .nr_max_requests = 23,
+ .nr_max_vchans = 24,
+ .gate_needed = true,
+};
+
static const struct of_device_id sun6i_dma_match[] = {
{ .compatible = "allwinner,sun6i-a31-dma", .data = &sun6i_a31_dma_cfg },
{ .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,sun8i-v3s-dma", .data = &sun8i_v3s_dma_cfg },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, sun6i_dma_match);