struct spi_flash_read_message — flash specific information for spi-masters that provide accelerated flash read interfaces
struct spi_flash_read_message {
void * buf;
loff_t from;
size_t len;
size_t retlen;
u8 read_opcode;
u8 addr_width;
u8 dummy_bytes;
u8 opcode_nbits;
u8 addr_nbits;
u8 data_nbits;
}; buffer to read data
offset within the flash from where data is to be read
length of data to be read
actual length of data read
read_opcode to be used to communicate with flash
number of address bytes
number of dummy bytes
number of lines to send opcode
number of lines to send address
number of lines for data