dmaengine: tegra: add slave capabilities reporting

After commit ecc19d17868be9c9f8f00ed928791533c420f3e0 ("dmaengine: Add
a warning for drivers not using the generic slave caps retrieval"),
the Tegra APB DMA driver causes this warning during boot:

WARNING: CPU: 0 PID: 1 at drivers/dma/dmaengine.c:830 dma_async_device_register+0x294/0x538()
this driver doesn't support generic slave capabilities reporting

Fix by setting the appropriate reporting structure fields that are
passed to dma_async_device_register().

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Tested-by: Thierry Reding <treding@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

diff --git a/drivers/dma/tegra20-apb-dma.c b/drivers/dma/tegra20-apb-dma.c
index 5695fb8a7a244e28aeebe769d9ff31f32a16980e..eaf585e8286b491da7dba4af594e59f0649b7f4d 100644 (file)
--- a/drivers/dma/tegra20-apb-dma.c
+++ b/drivers/dma/tegra20-apb-dma.c
@@ -1425,6 +1425,21 @@ static int tegra_dma_probe(struct platform_device *pdev)
                                        tegra_dma_free_chan_resources;
        tdma->dma_dev.device_prep_slave_sg = tegra_dma_prep_slave_sg;
        tdma->dma_dev.device_prep_dma_cyclic = tegra_dma_prep_dma_cyclic;
+       tdma->dma_dev.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);
+       tdma->dma_dev.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);
+       tdma->dma_dev.directions = BIT(DMA_DEV_TO_MEM) | BIT(DMA_MEM_TO_DEV);
+       /*
+        * XXX The hardware appears to support
+        * DMA_RESIDUE_GRANULARITY_BURST-level reporting, but it's
+        * only used by this driver during tegra_dma_terminate_all()
+        */
+       tdma->dma_dev.residue_granularity = DMA_RESIDUE_GRANULARITY_SEGMENT;
        tdma->dma_dev.device_config = tegra_dma_slave_config;
        tdma->dma_dev.device_terminate_all = tegra_dma_terminate_all;
        tdma->dma_dev.device_tx_status = tegra_dma_tx_status;