/* SPDX-License-Identifier: GPL-2.0-or-later */ #include #include #include #include #include #include #include #include #include #include #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; 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->bus, &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); }