linux/spi/spi-mem.h

140  * struct spi_mem_dirmap_info - Direct mapping information
141  * @op_tmpl: operation template that should be used by the direct mapping when
143  * @offset: absolute offset this direct mapping is pointing to
144  * @length: length in byte of this direct mapping
149  * A direct mapping is only valid for one direction (read or write) and this
159  * struct spi_mem_dirmap_desc - Direct mapping descriptor
160  * @mem: the SPI memory device this direct mapping is attached to
161  * @info: information passed at direct mapping creation time
167  *	      no matter whether the controller supports direct mapping or not
170  * Common part of a direct mapping descriptor. This object is created by
172  * can create/attach direct mapping resources to the descriptor in the ->priv
237  * @dirmap_create: create a direct mapping descriptor that can later be used to
241  * @dirmap_read: read data from the memory device using the direct mapping
247  * @dirmap_write: write data to the memory device using the direct mapping
258  * Note on ->dirmap_{read,write}(): drivers should avoid accessing the direct
262  * use DMA to access this direct mapping.