| /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| |
| #include <acpi/acpi.h> |
| #include <acpi/acpi_device.h> |
| #include <acpi/acpi_pld.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 <drivers/intel/usb4/retimer/retimer.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. |
| */ |
| int group_token; |
| if (config->use_custom_pld) |
| group_token = config->custom_pld.group.token; |
| else |
| group_token = config->group.token; |
| if (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: |
| __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 get_pld_from_usb_ports(struct acpi_pld *pld, |
| struct device *usb2_port, struct device *usb3_port, |
| struct device *usb4_port) |
| { |
| struct drivers_usb_acpi_config *config = NULL; |
| |
| if (usb4_port) |
| config = usb4_port->chip_info; |
| else if (usb3_port) |
| config = usb3_port->chip_info; |
| else if (usb2_port) |
| config = usb2_port->chip_info; |
| |
| if (config) { |
| if (config->use_custom_pld) |
| *pld = config->custom_pld; |
| else |
| acpi_pld_fill_usb(pld, config->type, &config->group); |
| } |
| } |
| |
| 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 = 0; |
| struct device *usb2_port; |
| struct device *usb3_port; |
| struct device *usb4_port; |
| struct acpi_pld pld = {0}; |
| uint32_t pcap_mask = 0; |
| |
| /* UCSI implementations do not require an ACPI device with mux info since the |
| linux kernel doesn't set the muxes. */ |
| if (google_chromeec_get_ucsi_enabled()) |
| return; |
| |
| rv = google_chromeec_get_num_pd_ports(&num_ports); |
| if (rv || num_ports == 0) |
| return; |
| |
| /* If we can't get port caps, we shouldn't bother creating a device. */ |
| rv = google_chromeec_get_cmd_versions(EC_CMD_GET_PD_PORT_CAPS, &pcap_mask); |
| if (rv || pcap_mask == 0) |
| 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); |
| |
| get_pld_from_usb_ports(&pld, usb2_port, usb3_port, usb4_port); |
| |
| struct typec_connector_class_config typec_config = { |
| .power_role = (enum usb_typec_power_role)port_caps.power_role_cap, |
| .try_power_role = |
| (enum usb_typec_try_power_role)port_caps.try_power_role_cap, |
| .data_role = (enum usb_typec_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], |
| .retimer_switch = config->retimer_conn[i], |
| .pld = &pld, |
| }; |
| |
| 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, |
| [TK_KBD_BKLIGHT_TOGGLE] = PS2_KEY_KBD_BKLIGHT_TOGGLE, |
| [TK_MICMUTE] = PS2_KEY_MICMUTE, |
| [TK_MENU] = PS2_KEY_MENU, |
| }; |
| |
| 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_INFO, "PS2K: Unsupported or 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), |
| true); |
| } |
| |
| 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; |
| |
| /* Set up a minimal EC0 device to pass to the DPTF helpers */ |
| path.type = DEVICE_PATH_GENERIC; |
| path.generic.id = 0; |
| path.generic.subid = 0; |
| ec = alloc_find_dev(dev->upstream, &path); |
| ec->ops = &ec_ops; |
| |
| if (CONFIG(DRIVERS_INTEL_DPTF)) |
| ec_fill_dptf_helpers(ec, dev); |
| |
| fill_ssdt_typec_device(dev); |
| fill_ssdt_ps2_keyboard(dev); |
| } |
| |
| const char *ec_retimer_fw_update_path(void) |
| { |
| return "\\_SB_.PCI0.LPCB.EC0_.RFWU"; |
| } |
| |
| void ec_retimer_fw_update(uint8_t data) |
| { |
| const char *RFWU = ec_retimer_fw_update_path(); |
| |
| /* |
| * Write the EC RAM for Retimer Upgrade |
| * RFWU = data |
| */ |
| acpigen_write_store(); |
| acpigen_write_byte(data); |
| acpigen_emit_namestring(RFWU); |
| } |