Commit 3f58e106 authored by Vignesh Raghavendra's avatar Vignesh Raghavendra Committed by Vinod Koul
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dmaengine: ti: k3-udma: Add support for BCDMA CSI RX 



BCDMA CSI RX present on AM62Ax SoC is a dedicated DMA for servicing
Camera Serial Interface (CSI) IP. Add support for the same.

Signed-off-by: default avatarVignesh Raghavendra <vigneshr@ti.com>
Acked-by: default avatarPeter Ujfalusi <peter.ujfalusi@gmail.com>
Link: https://lore.kernel.org/r/20221213164304.1126945-6-vigneshr@ti.com


Signed-off-by: default avatarVinod Koul <vkoul@kernel.org>
parent c1475ad3

drivers/dma/ti/k3-udma.c

+32 −5
Original line number Diff line number Diff line
@@ -135,6 +135,7 @@ struct udma_match_data { 
	u32 flags;

	u32 statictr_z_mask;

	u8 burst_size[3];

	struct udma_soc_data *soc_data;

};



struct udma_soc_data {
@@ -4295,6 +4296,25 @@ static struct udma_match_data j721e_mcu_data = { 
	},

};



static struct udma_soc_data am62a_dmss_csi_soc_data = {

	.oes = {

		.bcdma_rchan_data = 0xe00,

		.bcdma_rchan_ring = 0x1000,

	},

};



static struct udma_match_data am62a_bcdma_csirx_data = {

	.type = DMA_TYPE_BCDMA,

	.psil_base = 0x3100,

	.enable_memcpy_support = false,

	.burst_size = {

		TI_SCI_RM_UDMAP_CHAN_BURST_SIZE_64_BYTES, /* Normal Channels */

		0, /* No H Channels */

		0, /* No UH Channels */

	},

	.soc_data = &am62a_dmss_csi_soc_data,

};



static struct udma_match_data am64_bcdma_data = {

	.type = DMA_TYPE_BCDMA,

	.psil_base = 0x2000, /* for tchan and rchan, not applicable to bchan */
@@ -4344,6 +4364,10 @@ static const struct of_device_id udma_of_match[] = { 
		.compatible = "ti,am64-dmss-pktdma",

		.data = &am64_pktdma_data,

	},

	{

		.compatible = "ti,am62a-dmss-bcdma-csirx",

		.data = &am62a_bcdma_csirx_data,

	},

	{ /* Sentinel */ },

};
@@ -5274,12 +5298,15 @@ static int udma_probe(struct platform_device *pdev) 
	}

	ud->match_data = match->data;



	ud->soc_data = ud->match_data->soc_data;

	if (!ud->soc_data) {

		soc = soc_device_match(k3_soc_devices);

		if (!soc) {

			dev_err(dev, "No compatible SoC found\n");

			return -ENODEV;

		}

		ud->soc_data = soc->data;

	}



	ret = udma_get_mmrs(pdev, ud);

	if (ret)