linux-kernel - [PATCH 6/7] dmaengine: mmp_tdma: Fill in slave capabilities

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Date:   Sun, 19 Apr 2020 18:49:11 +0200
From:   Lubomir Rintel <lkundrak@...sk>
To:     Vinod Koul <vkoul@...nel.org>
Cc:     Dan Williams <dan.j.williams@...el.com>, dmaengine@...r.kernel.org,
        linux-kernel@...r.kernel.org, Lubomir Rintel <lkundrak@...sk>
Subject: [PATCH 6/7] dmaengine: mmp_tdma: Fill in slave capabilities

This makes dma_get_slave_caps() work with the device so that it could
actually be used with soc-generic-dmaengine-pcm.

Signed-off-by: Lubomir Rintel <lkundrak@...sk>
---
 drivers/dma/mmp_tdma.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/dma/mmp_tdma.c b/drivers/dma/mmp_tdma.c
index 191640f26246d..38f2298879881 100644
--- a/drivers/dma/mmp_tdma.c
+++ b/drivers/dma/mmp_tdma.c
@@ -725,6 +725,17 @@ static int mmp_tdma_probe(struct platform_device *pdev)
 	tdev->device.device_terminate_all = mmp_tdma_terminate_all;
 	tdev->device.copy_align = DMAENGINE_ALIGN_8_BYTES;
 
+	tdev->device.directions = BIT(DMA_DEV_TO_MEM) | BIT(DMA_MEM_TO_DEV);
+	if (type == MMP_AUD_TDMA) {
+		tdev->device.max_burst = SZ_128;
+		tdev->device.src_addr_widths = BIT(DMA_SLAVE_BUSWIDTH_4_BYTES);
+		tdev->device.dst_addr_widths = BIT(DMA_SLAVE_BUSWIDTH_4_BYTES);
+	} else if (type == PXA910_SQU) {
+		tdev->device.max_burst = SZ_32;
+	}
+	tdev->device.residue_granularity = DMA_RESIDUE_GRANULARITY_BURST;
+	tdev->device.descriptor_reuse = true;
+
 	dma_set_mask(&pdev->dev, DMA_BIT_MASK(64));
 	platform_set_drvdata(pdev, tdev);
 
-- 
2.26.0