Commit 07b55273 authored by Yangtao Li's avatar Yangtao Li Committed by Vinod Koul
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dmaengine: sun6i: Add support for A100 DMA 



The dma of a100 is similar to h6, with some minor changes to
support greater addressing capabilities.

Add support for it.

Signed-off-by: default avatarYangtao Li <frank@allwinnertech.com>
Link: https://lore.kernel.org/r/719852c6a9a597bd2e82d01a268ca02b9dee826c.1604988979.git.frank@allwinnertech.com


Signed-off-by: default avatarVinod Koul <vkoul@kernel.org>
parent 613ff7e1

drivers/dma/sun6i-dma.c

+25 −0
Original line number Diff line number Diff line
@@ -1173,6 +1173,30 @@ static struct sun6i_dma_config sun50i_a64_dma_cfg = { 
			     BIT(DMA_SLAVE_BUSWIDTH_8_BYTES),

};



/*

 * TODO: Add support for more than 4g physical addressing.

 *

 * The A100 binding uses the number of dma channels from the

 * device tree node.

 */

static struct sun6i_dma_config sun50i_a100_dma_cfg = {

	.clock_autogate_enable = sun6i_enable_clock_autogate_h3,

	.set_burst_length = sun6i_set_burst_length_h3,

	.set_drq          = sun6i_set_drq_h6,

	.set_mode         = sun6i_set_mode_h6,

	.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),

	.has_mbus_clk = true,

};



/*

 * The H6 binding uses the number of dma channels from the

 * device tree node.
@@ -1225,6 +1249,7 @@ static const struct of_device_id sun6i_dma_match[] = { 
	{ .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 },

	{ .compatible = "allwinner,sun50i-a100-dma", .data = &sun50i_a100_dma_cfg },

	{ .compatible = "allwinner,sun50i-h6-dma", .data = &sun50i_h6_dma_cfg },

	{ /* sentinel */ }

};