struct_hsi_msg (9)

struct hsi_msg {
  struct list_head link;
  struct hsi_client * cl;
  struct sg_table sgt;
  void * context;
  void (* complete) (struct hsi_msg *msg);
  void (* destructor) (struct hsi_msg *msg);
  int status;
  unsigned int actual_len;
  unsigned int channel;
  unsigned int ttype:1;
  unsigned int break_frame:1;
};

link

Free to use by the current descriptor owner

cl

HSI device client that issues the transfer

sgt

Head of the scatterlist array

context

Client context data associated to the transfer

complete

Transfer completion callback

destructor

Destructor to free resources when flushing

status

Status of the transfer when completed

actual_len

Actual length of data transferred on completion

channel

Channel were to TX/RX the message

ttype

Transfer type (TX if set, RX otherwise)

break_frame

if true HSI will send/receive a break frame. Data buffers are ignored in the request.