kernel/linux.git/drivers/dma/ti, branch linux-5.11.y

dmaengine: ti: k3-udma: Set rflow count for BCDMA split channels

2021-03-04T11:14:35+00:00

[ Upstream commit aecf9d38361090857aa58708e500ee79bed1e273 ] BCDMA RX channels have one flow per channel, therefore set the rflow_cnt to rchan_cnt. Without this patch, request for BCDMA RX channel allocation fails as rflow_cnt is 0 thus fails to reserve a rflow for the channel. Fixes: 8844898028d4 ("dmaengine: ti: k3-udma: Add support for BCDMA channel TPL handling") Signed-off-by: Vignesh Raghavendra Acked-by: Peter Ujfalusi Link: https://lore.kernel.org/r/20210112141403.30286-1-vigneshr@ti.com Signed-off-by: Vinod Koul Signed-off-by: Sasha Levin

dmaengine: ti: k3-udma: Fix a resource leak in an error handling path

2021-01-26T17:31:32+00:00

In 'dma_pool_create()', we return -ENOMEM, but don't release the resources already allocated, as in all the other error handling paths. Go to 'err_res_free' instead of returning directly. Fixes: 017794739702 ("dmaengine: ti: k3-udma: Initial support for K3 BCDMA") Signed-off-by: Christophe JAILLET Acked-by: Peter Ujfalusi Link: https://lore.kernel.org/r/20210124070923.724479-1-christophe.jaillet@wanadoo.fr Signed-off-by: Vinod Koul

dmaengine: ti: k3-udma: Fix pktdma rchan TPL level setup

2020-12-29T04:37:59+00:00

Instead of initializing the rchan_tpl the initial commit re-initialized the tchan_tpl. Fixes: d2abc982333c0 ("dmaengine: ti: k3-udma: Initial support for K3 PKTDMA") Signed-off-by: Peter Ujfalusi Link: https://lore.kernel.org/r/20201216154833.20821-1-peter.ujfalusi@ti.com Signed-off-by: Vinod Koul

Merge tag 'dmaengine-5.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine

2020-12-17T20:52:23+00:00

Pull dmaengine updates from Vinod Koul: "The last dmaengine updates for this year :) This contains couple of new drivers, new device support and updates to bunch of drivers. New drivers/devices: - Qualcomm ADM driver - Qualcomm GPI driver - Allwinner A100 DMA support - Microchip Sama7g5 support - Mediatek MT8516 apdma Updates: - more updates to idxd driver and support for IAX config - runtime PM support for dw driver - TI drivers" * tag 'dmaengine-5.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine: (75 commits) soc: ti: k3-ringacc: Use correct error casting in k3_ringacc_dmarings_init dmaengine: ti: k3-udma-glue: Add support for K3 PKTDMA dmaengine: ti: k3-udma: Initial support for K3 PKTDMA dmaengine: ti: k3-udma: Add support for BCDMA channel TPL handling dmaengine: ti: k3-udma: Initial support for K3 BCDMA soc: ti: k3-ringacc: add AM64 DMA rings support. dmaengine: ti: Add support for k3 event routers dmaengine: ti: k3-psil: Add initial map for AM64 dmaengine: ti: k3-psil: Extend psil_endpoint_config for K3 PKTDMA dt-bindings: dma: ti: Add document for K3 PKTDMA dt-bindings: dma: ti: Add document for K3 BCDMA dmaengine: dmatest: Use dmaengine_get_dma_device dmaengine: doc: client: Update for dmaengine_get_dma_device() usage dmaengine: Add support for per channel coherency handling dmaengine: of-dma: Add support for optional router configuration callback dmaengine: ti: k3-udma-glue: Configure the dma_dev for rings dmaengine: ti: k3-udma-glue: Get the ringacc from udma_dev dmaengine: ti: k3-udma-glue: Add function to get device pointer for DMA API dmaengine: ti: k3-udma: Add support for second resource range from sysfw dmaengine: ti: k3-udma: Wait for peer teardown completion if supported ...

dmaengine: ti: k3-udma-glue: Add support for K3 PKTDMA

2020-12-11T15:50:10+00:00

This commit adds support for PKTDMA in k3-udma glue driver. Use new psil_endpoint_config struct to get static data for a given channel or a flow during setup. Make sure that the RX flows being mapped to a RX channel is within the range of flows that is been allocated to that RX channel. Signed-off-by: Vignesh Raghavendra Signed-off-by: Peter Ujfalusi Link: https://lore.kernel.org/r/20201208090440.31792-21-peter.ujfalusi@ti.com Signed-off-by: Vinod Koul

dmaengine: ti: k3-udma: Initial support for K3 PKTDMA

2020-12-11T15:50:09+00:00

One of the DMAs introduced with AM64 is the Packet DMA (PKTDMA). It serves similar purpose as K3 UDMAP channels in packet mode, but with notable differences, like tflow support and channels being allocated to service specific peripherals. The rings for the PKTDMA is integrated within the DMA itself instead of using rings from the general purpose ringacc. PKTDMA can be used to service PSI-L peripherals, similarly to K3 UDMA channels. Most of the driver code can be reused for PKTDMA tchan/rchan support but new setup and allocation functions are needed to handle the differences between the DMAs. Signed-off-by: Peter Ujfalusi Link: https://lore.kernel.org/r/20201208090440.31792-20-peter.ujfalusi@ti.com Signed-off-by: Vinod Koul

dmaengine: ti: k3-udma: Add support for BCDMA channel TPL handling

2020-12-11T15:50:09+00:00

Unlike UDMAP the BCDMA defines the channel TPL levels per channel type. In UDMAP the number of high and ultra-high channels applies to both tchan and rchan. BCDMA defines the TPL per channel types: bchan, tchan and rchan can have different number of high and ultra-high channels. In order to support BCDMA channel TPL we need to move the tpl information as per channel type property for the DMAs. Signed-off-by: Peter Ujfalusi Link: https://lore.kernel.org/r/20201208090440.31792-19-peter.ujfalusi@ti.com Signed-off-by: Vinod Koul

dmaengine: ti: k3-udma: Initial support for K3 BCDMA

2020-12-11T15:50:09+00:00

One of the DMAs introduced with AM64 is the Block Copy DMA (BCDMA). It serves similar purpose as K3 UDMAP channels in TR mode. The rings for the BCDMA is integrated within the DMA itself instead of using rings from the general purpose ringacc. A BCDMA have two different type of channels: - Block Copy Channels (bchan) - Split Channels (tchan and rchan) tchan and rchan can be used to service PSI-L peripherals, similarly to K3 UDMA channels. bchan can be only used for block copy operation (TR type15) like the paired K3 UDMA tchan/rchan configured in block copy mode. bchans can be also used to service peripherals directly if an external trigger is selected for the channel. Most of the driver code can be reused for BCDMA bchan/tchan/rchan support but new setup and allocation functions are needed to handle the differences between the DMAs. Signed-off-by: Peter Ujfalusi Link: https://lore.kernel.org/r/20201208090440.31792-18-peter.ujfalusi@ti.com Signed-off-by: Vinod Koul

dmaengine: ti: k3-psil: Add initial map for AM64

2020-12-11T15:50:09+00:00

Add initial PSI-L map file for AM64. Signed-off-by: Peter Ujfalusi Link: https://lore.kernel.org/r/20201208090440.31792-15-peter.ujfalusi@ti.com Signed-off-by: Vinod Koul

dmaengine: ti: k3-udma-glue: Configure the dma_dev for rings

2020-12-11T15:50:08+00:00

Rings in RING mode should be using the DMA device for DMA API as in this mode the ringacc will not access the ring memory in any ways, but the DMA is. Fix up the ring configuration and set the dma_dev unconditionally and let the ringacc driver to select the correct device to use for DMA API. Signed-off-by: Peter Ujfalusi Reviewed-by: Grygorii Strashko Link: https://lore.kernel.org/r/20201208090440.31792-7-peter.ujfalusi@ti.com Signed-off-by: Vinod Koul