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Commit 12e01770 authored by Stefan Brüns's avatar Stefan Brüns Committed by Vinod Koul
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dmaengine: sun6i: Add support for Allwinner A64 and compatibles 



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: default avatarStefan Brüns <stefan.bruens@rwth-aachen.de>
Acked-by: default avatarMaxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: default avatarVinod Koul <vinod.koul@intel.com>
parent d93cc0e7

drivers/dma/sun6i-dma.c

+20 −0
Original line number Diff line number Diff line
@@ -1121,6 +1121,25 @@ static struct sun6i_dma_config sun8i_h3_dma_cfg = { 
			     BIT(DMA_SLAVE_BUSWIDTH_8_BYTES),

};



/*

 * The A64 binding uses the number of dma channels from the

 * device tree node.

 */

static struct sun6i_dma_config sun50i_a64_dma_cfg = {

	.clock_autogate_enable = sun6i_enable_clock_autogate_h3,

	.set_burst_length = sun6i_set_burst_length_h3,

	.src_burst_lengths = BIT(1) | BIT(4) | BIT(8) | BIT(16),

	.dst_burst_lengths = BIT(1) | BIT(4) | BIT(8) | BIT(16),

	.src_addr_widths   = BIT(DMA_SLAVE_BUSWIDTH_1_BYTE) |

			     BIT(DMA_SLAVE_BUSWIDTH_2_BYTES) |

			     BIT(DMA_SLAVE_BUSWIDTH_4_BYTES) |

			     BIT(DMA_SLAVE_BUSWIDTH_8_BYTES),

	.dst_addr_widths   = BIT(DMA_SLAVE_BUSWIDTH_1_BYTE) |

			     BIT(DMA_SLAVE_BUSWIDTH_2_BYTES) |

			     BIT(DMA_SLAVE_BUSWIDTH_4_BYTES) |

			     BIT(DMA_SLAVE_BUSWIDTH_8_BYTES),

};



/*

 * The V3s have only 8 physical channels, a maximum DRQ port id of 23,

 * and a total of 24 usable source and destination endpoints.
@@ -1148,6 +1167,7 @@ static const struct of_device_id sun6i_dma_match[] = { 
	{ .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 },

	{ .compatible = "allwinner,sun50i-a64-dma", .data = &sun50i_a64_dma_cfg },

	{ /* sentinel */ }

};

MODULE_DEVICE_TABLE(of, sun6i_dma_match);