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/* SPDX-License-Identifier: GPL-2.0-or-later */
#include <acpi/acpi.h>
#include <acpi/acpi_device.h>
#include <acpi/acpigen.h>
#include <acpi/acpigen_ps2_keybd.h>
#include <acpi/acpigen_usb.h>
#include <console/console.h>
#include <drivers/usb/acpi/chip.h>
#include <ec/google/common/dptf.h>
#include "chip.h"
#include "ec.h"
#include "ec_commands.h"
#define GOOGLE_CHROMEEC_USBC_DEVICE_HID "GOOG0014"
#define GOOGLE_CHROMEEC_USBC_DEVICE_NAME "USBC"
const char *google_chromeec_acpi_name(const struct device *dev)
{
/*
* Chrome EC device (CREC - GOOG0004) is really a child of EC device (EC - PNP0C09) in
* ACPI tables. However, in coreboot device tree, there is no separate chip/device for
* EC0. Thus, Chrome EC device needs to return "EC0.CREC" as the ACPI name so that the
* callers can get the correct acpi device path/scope for this device.
*
* If we ever enable a separate driver for generating AML for EC0 device, then this
* function needs to be updated to return "CREC".
*/
return "EC0.CREC";
}
/*
* Helper for fill_ssdt_generator. This adds references to the USB
* port objects so that the consumer of this information can know
* whether the port supports USB2 and/or USB3.
*/
static void get_usb_port_references(int port_number, struct device **usb2_port,
struct device **usb3_port, struct device **usb4_port)
{
struct drivers_usb_acpi_config *config;
struct device *port = NULL;
/* Search through the devicetree for matching USB Type-C ports */
while ((port = dev_find_path(port, DEVICE_PATH_USB)) != NULL) {
if (!port->enabled || port->path.type != DEVICE_PATH_USB)
continue;
config = port->chip_info;
/* Look at only USB Type-C ports */
if ((config->type != UPC_TYPE_C_USB2_ONLY) &&
(config->type != UPC_TYPE_C_USB2_SS_SWITCH) &&
(config->type != UPC_TYPE_C_USB2_SS))
continue;
/*
* Check for a matching port number (the 'token' field in 'group'). Note that
* 'port_number' is 0-based, whereas the 'token' field is 1-based.
*/
if (config->group.token != (port_number + 1))
continue;
switch (port->path.usb.port_type) {
case 2:
*usb2_port = port;
break;
case 3:
*usb3_port = port;
break;
case 4:
*usb4_port = port;
break;
default:
break;
}
}
}
/*
* Apparently these are supposed to be uppercase, in contrast to the other
* lowercase fields.
*/
static const char *port_location_to_str(enum ec_pd_port_location port_location)
{
switch (port_location) {
case EC_PD_PORT_LOCATION_LEFT:
return "LEFT";
case EC_PD_PORT_LOCATION_RIGHT:
return "RIGHT";
case EC_PD_PORT_LOCATION_BACK:
return "BACK";
case EC_PD_PORT_LOCATION_FRONT:
return "FRONT";
case EC_PD_PORT_LOCATION_LEFT_FRONT:
return "LEFT_FRONT";
case EC_PD_PORT_LOCATION_LEFT_BACK:
return "LEFT_BACK";
case EC_PD_PORT_LOCATION_RIGHT_FRONT:
return "RIGHT_FRONT";
case EC_PD_PORT_LOCATION_RIGHT_BACK:
return "RIGHT_BACK";
case EC_PD_PORT_LOCATION_BACK_LEFT:
return "BACK_LEFT";
case EC_PD_PORT_LOCATION_BACK_RIGHT:
return "BACK_RIGHT";
case EC_PD_PORT_LOCATION_UNKNOWN: /* intentional fallthrough */
default:
return "UNKNOWN";
}
}
static struct usb_pd_port_caps port_caps;
static void add_port_location(struct acpi_dp *dsd, int port_number)
{
acpi_dp_add_string(dsd, "port-location", port_location_to_str(port_caps.port_location));
}
static void fill_ssdt_typec_device(const struct device *dev)
{
struct ec_google_chromeec_config *config = dev->chip_info;
int rv;
int i;
unsigned int num_ports;
struct device *usb2_port;
struct device *usb3_port;
struct device *usb4_port;
if (google_chromeec_get_num_pd_ports(&num_ports))
return;
acpigen_write_scope(acpi_device_path(dev));
acpigen_write_device(GOOGLE_CHROMEEC_USBC_DEVICE_NAME);
acpigen_write_name_string("_HID", GOOGLE_CHROMEEC_USBC_DEVICE_HID);
acpigen_write_name_string("_DDN", "ChromeOS EC Embedded Controller "
"USB Type-C Control");
for (i = 0; i < num_ports; ++i) {
rv = google_chromeec_get_pd_port_caps(i, &port_caps);
if (rv)
continue;
usb2_port = NULL;
usb3_port = NULL;
usb4_port = NULL;
get_usb_port_references(i, &usb2_port, &usb3_port, &usb4_port);
struct typec_connector_class_config typec_config = {
.power_role = port_caps.power_role_cap,
.try_power_role = port_caps.try_power_role_cap,
.data_role = port_caps.data_role_cap,
.usb2_port = usb2_port,
.usb3_port = usb3_port,
.usb4_port = usb4_port,
.orientation_switch = config->mux_conn[i],
.usb_role_switch = config->mux_conn[i],
.mode_switch = config->mux_conn[i],
};
acpigen_write_typec_connector(&typec_config, i, add_port_location);
}
acpigen_pop_len(); /* Device GOOGLE_CHROMEEC_USBC_DEVICE_NAME */
acpigen_pop_len(); /* Scope */
}
static const enum ps2_action_key ps2_enum_val[] = {
[TK_ABSENT] = PS2_KEY_ABSENT,
[TK_BACK] = PS2_KEY_BACK,
[TK_FORWARD] = PS2_KEY_FORWARD,
[TK_REFRESH] = PS2_KEY_REFRESH,
[TK_FULLSCREEN] = PS2_KEY_FULLSCREEN,
[TK_OVERVIEW] = PS2_KEY_OVERVIEW,
[TK_BRIGHTNESS_DOWN] = PS2_KEY_BRIGHTNESS_DOWN,
[TK_BRIGHTNESS_UP] = PS2_KEY_BRIGHTNESS_UP,
[TK_VOL_MUTE] = PS2_KEY_VOL_MUTE,
[TK_VOL_DOWN] = PS2_KEY_VOL_DOWN,
[TK_VOL_UP] = PS2_KEY_VOL_UP,
[TK_SNAPSHOT] = PS2_KEY_SNAPSHOT,
[TK_PRIVACY_SCRN_TOGGLE] = PS2_KEY_PRIVACY_SCRN_TOGGLE,
[TK_KBD_BKLIGHT_DOWN] = PS2_KEY_KBD_BKLIGHT_DOWN,
[TK_KBD_BKLIGHT_UP] = PS2_KEY_KBD_BKLIGHT_UP,
[TK_PLAY_PAUSE] = PS2_KEY_PLAY_PAUSE,
[TK_NEXT_TRACK] = PS2_KEY_NEXT_TRACK,
[TK_PREV_TRACK] = PS2_KEY_PREV_TRACK,
};
static void fill_ssdt_ps2_keyboard(const struct device *dev)
{
uint8_t i;
struct ec_response_keybd_config keybd = {};
enum ps2_action_key ps2_action_keys[MAX_TOP_ROW_KEYS] = {};
if (google_chromeec_get_keybd_config(&keybd) ||
!keybd.num_top_row_keys ||
keybd.num_top_row_keys > MAX_TOP_ROW_KEYS) {
printk(BIOS_ERR, "PS2K: Bad resp from EC. Vivaldi disabled!\n");
return;
}
/* Convert enum action_key values to enum ps2_action_key values */
for (i = 0; i < keybd.num_top_row_keys; i++)
ps2_action_keys[i] = ps2_enum_val[keybd.action_keys[i]];
acpigen_ps2_keyboard_dsd("_SB.PCI0.PS2K", keybd.num_top_row_keys,
ps2_action_keys,
!!(keybd.capabilities & KEYBD_CAP_FUNCTION_KEYS),
!!(keybd.capabilities & KEYBD_CAP_NUMERIC_KEYPAD),
!!(keybd.capabilities & KEYBD_CAP_SCRNLOCK_KEY));
}
static const char *ec_acpi_name(const struct device *dev)
{
return "EC0";
}
static struct device_operations ec_ops = {
.acpi_name = ec_acpi_name,
};
void google_chromeec_fill_ssdt_generator(const struct device *dev)
{
struct device_path path;
struct device *ec;
if (!dev->enabled)
return;
/* Set up a minimal EC0 device to pass to the DPTF helpers */
path.type = DEVICE_PATH_GENERIC;
path.generic.id = 0;
ec = alloc_find_dev(dev->bus, &path);
ec->ops = &ec_ops;
if (CONFIG(DRIVERS_INTEL_DPTF))
ec_fill_dptf_helpers(ec);
fill_ssdt_typec_device(dev);
fill_ssdt_ps2_keyboard(dev);
}
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