linux

iv/linux

History

Siddharth Vadapalli 81a1f90f20 dmaengine: ti: k3-udma-glue: Add function to parse channel by ID

The existing helper function of_k3_udma_glue_parse() fetches the DMA
Channel thread ID from the device-tree node. This makes it necessary to
have a device-tree node with the Channel thread IDs populated. However,
in the case where the thread ID is known by alternate methods (an
example being that of Firmware running on remote core sharing details of
the thread IDs), there is no equivalent function to implement the
functionality of the existing of_k3_udma_glue_parse() function. In such
cases, the driver utilizing the DMA APIs might not even have a
device-tree node to begin with, since it could be probed with other
methods (RPMsg-Bus for example).

Add the of_k3_udma_glue_parse_chn_by_id() helper function which accepts
the thread ID as an argument, thereby making it unnecessary to have a
device-tree node for obtaining the thread ID.

Since of_k3_udma_glue_parse() and of_k3_udma_glue_parse_chn_by_id()
share a lot of code in common, create a new function to handle the
common code which is named as of_k3_udma_glue_parse_chn_common().

Signed-off-by: Siddharth Vadapalli <s-vadapalli@ti.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@gmail.com>
Link: https://lore.kernel.org/r/20240124124319.820002-2-s-vadapalli@ti.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

2024-01-30 22:13:51 +05:30

cppi41.c

dmaengine: ti: cppi41: Convert to platform remove callback returning void

2023-09-28 13:10:57 +05:30

dma-crossbar.c

dmaengine: Explicitly include correct DT includes

2023-08-01 23:51:27 +05:30

edma.c

dmaengine: ti: edma: handle irq_of_parse_and_map() errors

2023-10-02 21:28:33 +05:30

k3-psil-am62.c

dmaengine: ti: k3-psil-am62: Fix SPI PDMA data