src/ec/google/common/mec.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #ifndef EC_GOOGLE_COMMON_MEC_H
   4 #define EC_GOOGLE_COMMON_MEC_H
   5
   6 #include <stddef.h>
   7 #include <stdint.h>
   8
   9 /* Indicate read or write from MEC IO region */
  10 enum mec_io_type {
  11         MEC_IO_READ,
  12         MEC_IO_WRITE
  13 };
  14
  15 /*
  16  * mec_io_bytes - Read / write bytes to MEC EMI port
  17  *
  18  * @type:    Indicate read or write operation
  19  * @base:    Base address for MEC EMI region
  20  * @offset:  Base read / write address
  21  * @buffer:  Destination / source buffer
  22  * @size:    Number of bytes to read / write
  23  *
  24  * @returns 8-bit checksum of all bytes read or written
  25  */
  26
  27 uint8_t mec_io_bytes(enum mec_io_type type, uint16_t base,
  28                      uint16_t offset, void *buffer, size_t size);
  29
  30 #endif /* EC_GOOGLE_COMMON_MEC_H */