From 12e0177055ee4b5ab656414b32054e64568160d8 Mon Sep 17 00:00:00 2001 From: Stefan Brüns Date: Thu, 28 Sep 2017 03:49:25 +0200 Subject: dmaengine: sun6i: Add support for Allwinner A64 and compatibles MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 Acked-by: Maxime Ripard Signed-off-by: Vinod Koul --- drivers/dma/sun6i-dma.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'drivers/dma/sun6i-dma.c') diff --git a/drivers/dma/sun6i-dma.c b/drivers/dma/sun6i-dma.c index f27b126dd6cd..0cabb48b0fb5 100644 --- a/drivers/dma/sun6i-dma.c +++ b/drivers/dma/sun6i-dma.c @@ -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); -- cgit v1.2.3