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/* SPDX-License-Identifier: GPL-2.0-only */
#include <console/console.h>
#include <device/device.h>
#include <device/pnp.h>
#include <pc80/keyboard.h>
#include <ec/acpi/ec.h>
#include <delay.h>
#include <option.h>
#include "ec.h"
#include "chip.h"
u16 it8987_get_version(void)
{
return (ec_read(0x00) << 8) | ec_read(0x01);
}
static void it8987_init(struct device *dev)
{
if (!dev->enabled)
return;
/*
* The address/data IO port pair for the IT8987 EC are configurable
* through the EC domain and are fixed by the EC's firmware blob. If
* the value(s) passed through the "dev" structure don't match the
* expected values then output severe warnings.
*/
if (dev->path.pnp.port != IT8987E_FIXED_ADDR) {
printk(BIOS_ERR, "IT8987: Incorrect ports defined in devicetree.cb.\n");
printk(BIOS_ERR, "IT8987: Serious operational issues will arise.\n");
return;
}
u8 chipid1 = pnp_read_index(dev->path.pnp.port, IT8987_CHIPID1);
u8 chipid2 = pnp_read_index(dev->path.pnp.port, IT8987_CHIPID2);
if (chipid1 != IT8987_CHIPID1_VAL || chipid2 != IT8987_CHIPID2_VAL) {
printk(BIOS_DEBUG, "IT8987: Device not found.\n");
return;
}
printk(BIOS_DEBUG, "IT8987: Initializing keyboard.\n");
pc_keyboard_init(NO_AUX_DEVICE);
/* Enable the keyboard backlight support. */
ec_write(0x18, 0xaa);
ec_write(0x19, 0xdd);
/* Set the timeout for the keyboard backlight. */
ec_write(ECRAM_KBL_TIMEOUT, get_uint_option("kbl_timeout", 0));
/*
* Set the correct state for the Ctrl Fn Reverse option. This
* swaps the Ctrl and Fn keys to make it like an Apple keyboard.
*/
ec_write(ECRAM_FN_CTRL_REVERSE, get_uint_option("fn_ctrl_swap", 0));
/*
* Copy the stored state of the fn_lock_state CMOS variable to the
* corresponding location within the EC RAM.
*/
ec_write(ECRAM_FN_LOCK_STATE, get_uint_option("fn_lock_state", 0));
}
static struct device_operations ops = {
.init = it8987_init,
.read_resources = noop_read_resources,
.set_resources = noop_set_resources,
};
static struct pnp_info pnp_dev_info[] = {
{ NULL, 0, 0, 0, }
};
static void enable_dev(struct device *dev)
{
pnp_enable_devices(dev, &ops, ARRAY_SIZE(pnp_dev_info), pnp_dev_info);
}
struct chip_operations ec_starlabs_it8987_ops = {
CHIP_NAME("ITE IT8987 EC")
.enable_dev = enable_dev
};
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