diff options
| author | Frank Li <Frank.Li@nxp.com> | 2026-10-01 10:39:53 -0400 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2026-10-09 11:53:04 +0200 |
| commit | 511afae96d89847f753fcab6b3a597f0281be9d5 (patch) | |
| tree | ff8dcda56bc7da0360e037b7123135ecb4095bd0 /drivers/dma | |
| parent | 562b6ed45db52934aaab9fbc856db3db79753155 (diff) | |
dmaengine: move driver-private helpers out of include/linux/dmaengine.h
Move the following functions and declarations from the public header
include/linux/dmaengine.h into the driver-private header
drivers/dma/dmaengine.h, since they are only used by DMA engine drivers
and not by DMA engine consumers:
- dma_async_device_register()
- dmaenginem_async_device_register()
- dma_async_device_unregister()
- dma_async_device_channel_register()
- dma_async_device_channel_unregister()
- is_slave_direction()
- dmaengine_get_direction_text()
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Link: https://patch.msgid.link/20261001143955.2195063-1-Frank.Li@oss.nxp.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/dmaengine.h | 32 | ||||
| -rw-r--r-- | drivers/dma/dw/dw.c | 1 |
2 files changed, 33 insertions, 0 deletions
diff --git a/drivers/dma/dmaengine.h b/drivers/dma/dmaengine.h index 53f16d3f0029..42a3cfa7e597 100644 --- a/drivers/dma/dmaengine.h +++ b/drivers/dma/dmaengine.h @@ -182,6 +182,38 @@ dmaengine_desc_callback_valid(struct dmaengine_desc_callback *cb) struct dma_chan *dma_get_slave_channel(struct dma_chan *chan); struct dma_chan *dma_get_any_slave_channel(struct dma_device *device); +static inline char * +dmaengine_get_direction_text(enum dma_transfer_direction dir) +{ + switch (dir) { + case DMA_DEV_TO_MEM: + return "DEV_TO_MEM"; + case DMA_MEM_TO_DEV: + return "MEM_TO_DEV"; + case DMA_MEM_TO_MEM: + return "MEM_TO_MEM"; + case DMA_DEV_TO_DEV: + return "DEV_TO_DEV"; + default: + return "invalid"; + } +} + +static inline bool is_slave_direction(enum dma_transfer_direction direction) +{ + return (direction == DMA_MEM_TO_DEV) || (direction == DMA_DEV_TO_MEM) || + (direction == DMA_DEV_TO_DEV); +} + +int dma_async_device_register(struct dma_device *device); +int dmaenginem_async_device_register(struct dma_device *device); +void dma_async_device_unregister(struct dma_device *device); +int dma_async_device_channel_register(struct dma_device *device, + struct dma_chan *chan, + const char *name); +void dma_async_device_channel_unregister(struct dma_device *device, + struct dma_chan *chan); + #ifdef CONFIG_DEBUG_FS #include <linux/debugfs.h> diff --git a/drivers/dma/dw/dw.c b/drivers/dma/dw/dw.c index 6766142884b6..e56974e7d4af 100644 --- a/drivers/dma/dw/dw.c +++ b/drivers/dma/dw/dw.c @@ -9,6 +9,7 @@ #include <linux/slab.h> #include <linux/types.h> +#include "../dmaengine.h" #include "internal.h" static void dw_dma_initialize_chan(struct dw_dma_chan *dwc) |