blob: 07b61f5154143e8c95915a529753e96f5469f9a8 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
|
/* SPDX-License-Identifier: GPL-2.0-only */
/* This file is part of the coreboot project. */
#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 "chip.h"
static void it8518_init(struct device *dev)
{
const struct ec_roda_it8518_config *const conf = dev->chip_info;
if (!dev->enabled)
return;
printk(BIOS_DEBUG, "Roda IT8518: Initializing keyboard.\n");
pc_keyboard_init(NO_AUX_DEVICE);
if (conf && conf->cpuhot_limit) {
/* The EC may take very long for the first command on a
cold boot (~180ms witnessed). Since we need an incre-
dibly long timeout, we do this EC RAM write manually. */
int timeout = 50000; /* 50,000 * 10us = 500ms */
send_ec_command(0x81);
while (ec_status() & EC_IBF && --timeout)
udelay(10);
send_ec_data(0xb2);
send_ec_data(conf->cpuhot_limit);
}
}
static struct device_operations ops = {
.init = it8518_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_roda_it8518_ops = {
CHIP_NAME("Roda IT8518 EC")
.enable_dev = enable_dev
};
|
