ec.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <types.h>
#include <console/console.h>
#include <device/device.h>
#include <ec/compal/ene932/ec.h>
#include "ec.h"
 
void parrot_ec_init(void)
{
        printk(BIOS_DEBUG, "Parrot EC Init\n");
 
        /* Clean up the buffers. We don't know the initial condition. */
        kbc_cleanup_buffers();
 
        /* Report EC info */
        /* EC version: cmd 0x51 - returns three bytes */
        ec_kbc_write_cmd(0x51);
        printk(BIOS_DEBUG, "  EC version %x.%x.%x\n",
                   ec_kbc_read_ob(), ec_kbc_read_ob(), ec_kbc_read_ob());
 
        /* EC Project name: cmd 0x52, 0xA0 - returns five bytes */
        ec_kbc_write_cmd(0x52);
        ec_kbc_write_ib(0xA0);
        printk(BIOS_DEBUG, "  EC Project: %c%c%c%c%c\n",
                   ec_kbc_read_ob(), ec_kbc_read_ob(), ec_kbc_read_ob(),
                   ec_kbc_read_ob(), ec_kbc_read_ob());
 
        /* Print the hardware revision */
        printk(BIOS_DEBUG, "  Parrot Revision %x\n", parrot_rev());
 
        /* US Keyboard */
        ec_kbc_write_cmd(0x59);
        ec_kbc_write_ib(0xE5);
 
        /* Enable IRQ1 */
        ec_kbc_write_cmd(0x59);
        ec_kbc_write_ib(0xD1);
 
        /* TODO - Do device detection and device maintain state (nvs) */
        /* Enable Wireless and Bluetooth */
        ec_kbc_write_cmd(0x45);
        ec_kbc_write_ib(0xAD);
 
        /* Set Wireless and Bluetooth Available */
        ec_kbc_write_cmd(0x45);
        ec_kbc_write_ib(0xA8);
 
        /* Set Wireless and Bluetooth Enable */
        ec_kbc_write_cmd(0x45);
        ec_kbc_write_ib(0xA2);
}
 
/* Parrot Hardware Revision */
u8 parrot_rev(void)
{
        ec_kbc_write_cmd(0x45);
        ec_kbc_write_ib(0x40);
        return ec_kbc_read_ob();
}