diff options
Diffstat (limited to 'include/dm/device.h')
| -rw-r--r-- | include/dm/device.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/include/dm/device.h b/include/dm/device.h index 4e95fb7773..079ec57003 100644 --- a/include/dm/device.h +++ b/include/dm/device.h @@ -46,6 +46,32 @@ struct driver_info; #define DM_FLAG_OF_PLATDATA (1 << 8) +/* + * Call driver remove function to stop currently active DMA transfers or + * give DMA buffers back to the HW / controller. This may be needed for + * some drivers to do some final stage cleanup before the OS is called + * (U-Boot exit) + */ +#define DM_FLAG_ACTIVE_DMA (1 << 9) + +/* + * One or multiple of these flags are passed to device_remove() so that + * a selective device removal as specified by the remove-stage and the + * driver flags can be done. + */ +enum { + /* Normal remove, remove all devices */ + DM_REMOVE_NORMAL = 1 << 0, + + /* Remove devices with active DMA */ + DM_REMOVE_ACTIVE_DMA = DM_FLAG_ACTIVE_DMA, + + /* Add more use cases here */ + + /* Remove devices with any active flag */ + DM_REMOVE_ACTIVE_ALL = DM_REMOVE_ACTIVE_DMA, +}; + /** * struct udevice - An instance of a driver * |