src/mainboard/google/parrot/ec.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <types.h>
   4 #include <console/console.h>
   5 #include <device/device.h>
   6 #include <ec/compal/ene932/ec.h>
   7 #include "ec.h"
   8
   9 void parrot_ec_init(void)
  10 {
  11         printk(BIOS_DEBUG, "Parrot EC Init\n");
  12
  13         /* Clean up the buffers. We don't know the initial condition. */
  14         kbc_cleanup_buffers();
  15
  16         /* Report EC info */
  17         /* EC version: cmd 0x51 - returns three bytes */
  18         ec_kbc_write_cmd(0x51);
  19         printk(BIOS_DEBUG, "  EC version %x.%x.%x\n",
  20                    ec_kbc_read_ob(), ec_kbc_read_ob(), ec_kbc_read_ob());
  21
  22         /* EC Project name: cmd 0x52, 0xA0 - returns five bytes */
  23         ec_kbc_write_cmd(0x52);
  24         ec_kbc_write_ib(0xA0);
  25         printk(BIOS_DEBUG, "  EC Project: %c%c%c%c%c\n",
  26                    ec_kbc_read_ob(), ec_kbc_read_ob(), ec_kbc_read_ob(),
  27                    ec_kbc_read_ob(), ec_kbc_read_ob());
  28
  29         /* Print the hardware revision */
  30         printk(BIOS_DEBUG, "  Parrot Revision %x\n", parrot_rev());
  31
  32         /* US Keyboard */
  33         ec_kbc_write_cmd(0x59);
  34         ec_kbc_write_ib(0xE5);
  35
  36         /* Enable IRQ1 */
  37         ec_kbc_write_cmd(0x59);
  38         ec_kbc_write_ib(0xD1);
  39
  40         /* TODO - Do device detection and device maintain state (nvs) */
  41         /* Enable Wireless and Bluetooth */
  42         ec_kbc_write_cmd(0x45);
  43         ec_kbc_write_ib(0xAD);
  44
  45         /* Set Wireless and Bluetooth Available */
  46         ec_kbc_write_cmd(0x45);
  47         ec_kbc_write_ib(0xA8);
  48
  49         /* Set Wireless and Bluetooth Enable */
  50         ec_kbc_write_cmd(0x45);
  51         ec_kbc_write_ib(0xA2);
  52 }
  53
  54 /* Parrot Hardware Revision */
  55 u8 parrot_rev(void)
  56 {
  57         ec_kbc_write_cmd(0x45);
  58         ec_kbc_write_ib(0x40);
  59         return ec_kbc_read_ob();
  60 }