src/mainboard/lenovo/x201/dock.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <console/console.h>
   4 #include <device/device.h>
   5 #include "dock.h"
   6 #include <southbridge/intel/common/gpio.h>
   7 #include <ec/lenovo/h8/h8.h>
   8 #include <ec/acpi/ec.h>
   9
  10 void h8_mb_init(void)
  11 {
  12         if (dock_present()) {
  13                 printk(BIOS_DEBUG, "dock is connected\n");
  14                 dock_connect();
  15         } else {
  16                 printk(BIOS_DEBUG, "dock is not connected\n");
  17         }
  18 }
  19
  20 void dock_connect(void)
  21 {
  22         ec_set_bit(0x02, 0);
  23         ec_set_bit(0x1a, 0);
  24         ec_set_bit(0xfe, 4);
  25
  26         set_gpio(28, GPIO_LEVEL_HIGH);
  27 }
  28
  29 void dock_disconnect(void)
  30 {
  31         ec_clr_bit(0x02, 0);
  32         ec_clr_bit(0x1a, 0);
  33         ec_clr_bit(0xfe, 4);
  34
  35         set_gpio(28, GPIO_LEVEL_LOW);
  36 }
  37
  38 int dock_present(void)
  39 {
  40         const int dock_id_gpio[] = { 3, 4, 5, -1};
  41
  42         return get_gpios(dock_id_gpio) != 7;
  43 }