src/ec/acpi/ec.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #ifndef _EC_ACPI_H
   4 #define _EC_ACPI_H
   5
   6 #include <types.h>
   7
   8 #define EC_DATA 0x62
   9 #define EC_SC   0x66
  10
  11 /* EC_SC input */
  12 #define   EC_SMI_EVT    (1 << 6) // 1: SMI event pending
  13 #define   EC_SCI_EVT    (1 << 5) // 1: SCI event pending
  14 #define   EC_BURST      (1 << 4) // 1: controller is in burst mode
  15 #define   EC_CMD        (1 << 3) // 1: byte in data register is command
  16                                  // 0: byte in data register is data
  17 #define   EC_IBF        (1 << 1) // 1: input buffer full (data ready for ec)
  18 #define   EC_OBF        (1 << 0) // 1: output buffer full (data ready for host)
  19 /* EC_SC output */
  20 #define   RD_EC         0x80 // Read Embedded Controller
  21 #define   WR_EC         0x81 // Write Embedded Controller
  22 #define   BE_EC         0x82 // Burst Enable Embedded Controller
  23 #define   BD_EC         0x83 // Burst Disable Embedded Controller
  24 #define   QR_EC         0x84 // Query Embedded Controller
  25
  26 bool ec_ready_send(int timeout_us);
  27 bool ec_ready_recv(int timeout_us);
  28 int send_ec_command(u8 command);
  29 int send_ec_command_timeout(u8 command, int timeout);
  30 int send_ec_data(u8 data);
  31 int send_ec_data_timeout(u8 data, int timeout);
  32 int recv_ec_data(void);
  33 int recv_ec_data_timeout(int timeout);
  34 void ec_clear_out_queue(void);
  35 u8 ec_status(void);
  36 u8 ec_query(void);
  37 u8 ec_read(u8 addr);
  38 int ec_write(u8 addr, u8 data);
  39 void ec_set_bit(u8 addr, u8 bit);
  40 void ec_clr_bit(u8 addr, u8 bit);
  41 void ec_set_ports(u16 cmd_reg, u16 data_reg);
  42
  43 #endif /* _EC_ACPI_H */