/* SPDX-License-Identifier: GPL-2.0-only */ /* * Mailbox EC communication interface for Google Chrome Embedded Controller. */ #ifndef _EC_GOOGLE_CHROMEEC_EC_H #define _EC_GOOGLE_CHROMEEC_EC_H #include #include #include "ec_commands.h" #include /* Fill in base and size of the IO port resources used. */ void google_chromeec_ioport_range(uint16_t *base, size_t *size); int google_chromeec_i2c_xfer(uint8_t chip, uint8_t addr, int alen, uint8_t *buffer, int len, int is_read); uint64_t google_chromeec_get_wake_mask(void); int google_chromeec_set_sci_mask(uint64_t mask); int google_chromeec_set_smi_mask(uint64_t mask); int google_chromeec_set_wake_mask(uint64_t mask); enum host_event_code google_chromeec_get_event(void); /* Check if EC supports feature EC_FEATURE_UNIFIED_WAKE_MASKS */ bool google_chromeec_is_uhepi_supported(void); int google_ec_running_ro(void); enum ec_image google_chromeec_get_current_image(void); void google_chromeec_init(void); /* Check for the current mux state in EC * in: int port physical port number of the type-c port * out: uint8_t flags representing the status of the mux such as * usb capability, dp capability, cable type, etc */ int google_chromeec_usb_get_pd_mux_info(int port, uint8_t *flags); /* Poll (up to `timeout_ms` ms) for DisplayPort to be ready * Return: -1: Error. 0: Timeout. * >=1: Bitmask of the ports that DP device is connected */ int google_chromeec_wait_for_displayport(long timeout_ms); /* Poll (up to `timeout_ms` ms) for the DP mode entry * event on the specified port. * Return: 0 on DP mode entry success, -1 on timeout */ int google_chromeec_wait_for_dp_mode_entry(int port, long timeout_ms); /* Poll (up to `timeout_ms` ms) for a Hot-Plug Detect (HPD) * event on the specified port. * Return: 0 on HPD ready, -1 on timeout */ int google_chromeec_wait_for_hpd(int port, long timeout_ms); /* Send command to EC to request to enter DisplayPort ALT mode on the * specified port. * Return: 0 on success, -1 on error */ int google_chromeec_typec_control_enter_dp_mode(int port); /* * Obtain any USB-C mux data needed for the specified port * in: int port physical port number of the type-c port * out: struct usbc_mux_info mux_info stores USB-C mux data * Return: 0 on success, -1 on error */ int google_chromeec_get_usbc_mux_info(int port, struct usbc_mux_info *mux_info); /* Device events */ uint64_t google_chromeec_get_device_enabled_events(void); int google_chromeec_set_device_enabled_events(uint64_t mask); uint64_t google_chromeec_get_device_current_events(void); int google_chromeec_check_feature(int feature); uint8_t google_chromeec_calc_checksum(const uint8_t *data, int size); /** * google_chromeec_get_board_version() - Get the board version * @version: Out parameter to retrieve the board Version * * Return: 0 on success or -1 on failure/error. * * This function is used to get the board version information from EC. */ int google_chromeec_get_board_version(uint32_t *version); uint32_t google_chromeec_get_sku_id(void); int google_chromeec_set_sku_id(uint32_t skuid); uint64_t google_chromeec_get_events_b(void); int google_chromeec_clear_events_b(uint64_t mask); int google_chromeec_kbbacklight(int percent); void google_chromeec_post(uint8_t postcode); uint8_t google_chromeec_get_switches(void); bool google_chromeec_get_ap_watchdog_flag(void); /* Temporary secure storage commands */ int google_chromeec_vstore_supported(void); int google_chromeec_vstore_info(uint32_t *locked); int google_chromeec_vstore_read(int slot, uint8_t *data); int google_chromeec_vstore_write(int slot, uint8_t *data, size_t size); /* Issue reboot command to EC with specified type and flags. Returns 0 on success, < 0 otherwise. */ int google_chromeec_reboot(enum ec_reboot_cmd type, uint8_t flags); /** * Get data from Cros Board Info * * @param id/fw_config/buf [OUT] value from CBI. * @return 0 on success or negative integer for errors. */ int google_chromeec_cbi_get_oem_id(uint32_t *id); int google_chromeec_cbi_get_sku_id(uint32_t *id); int google_chromeec_cbi_get_fw_config(uint64_t *fw_config); int google_chromeec_cbi_get_dram_part_num(char *buf, size_t bufsize); int google_chromeec_cbi_get_oem_name(char *buf, size_t bufsize); /* version may be stored in CBI as a smaller integer width, but the EC code handles it correctly. */ int google_chromeec_cbi_get_board_version(uint32_t *version); int google_chromeec_cbi_get_ssfc(uint32_t *ssfc); #define CROS_SKU_UNKNOWN 0xFFFFFFFF #define CROS_SKU_UNPROVISIONED 0x7FFFFFFF /* Returns CROS_SKU_UNKNOWN on failure. */ uint32_t google_chromeec_get_board_sku(void); const char *google_chromeec_smbios_system_sku(void); /* MEC uses 0x800/0x804 as register/index pair, thus an 8-byte resource. */ #define MEC_EMI_BASE 0x800 #define MEC_EMI_SIZE 8 /* For MEC, access ranges 0x800 thru 0x9ff using EMI interface instead of LPC */ #define MEC_EMI_RANGE_START EC_HOST_CMD_REGION0 #define MEC_EMI_RANGE_END (EC_LPC_ADDR_MEMMAP + EC_MEMMAP_SIZE) int google_chromeec_set_usb_charge_mode(uint8_t port_id, enum usb_charge_mode mode); int google_chromeec_set_usb_pd_role(uint8_t port, enum usb_pd_control_role role); /* * Retrieve the charger type and max wattage. * * @param type charger type * @param current_max charger max current * @param voltage_max charger max voltage * @return non-zero for error, otherwise 0. */ int google_chromeec_get_usb_pd_power_info(enum usb_chg_type *type, uint16_t *current_max, uint16_t *voltage_max); /* * Set max current and voltage of a dedicated charger. * * @param current_lim Max current in mA * @param voltage_lim Max voltage in mV * @return non-zero for error, otherwise 0. */ int google_chromeec_override_dedicated_charger_limit(uint16_t current_lim, uint16_t voltage_lim); /* internal structure to send a command to the EC and wait for response. */ struct chromeec_command { uint16_t cmd_code; /* command code in, status out */ uint8_t cmd_version; /* command version */ const void* cmd_data_in; /* command data, if any */ void* cmd_data_out; /* command response, if any */ uint16_t cmd_size_in; /* size of command data */ uint16_t cmd_size_out; /* expected size of command response in, * actual received size out */ int cmd_dev_index;/* device index for passthru */ }; /* * There are transport level constraints for sending protov3 packets. Because * of this provide a way for the generic protocol layer to request buffers * so that there is zero copying being done through the layers. * * Request the buffer provided the size. If 'req' is non-zero then the * buffer requested is for EC requests. Otherwise it's for responses. Return * non-NULL on success, NULL on error. */ void *crosec_get_buffer(size_t size, int req); /* * The lower level transport works on the buffers handed out to the * upper level. Therefore, only the size of the request and response * are required. */ typedef int (*crosec_io_t)(size_t req_size, size_t resp_size, void *context); int crosec_command_proto(struct chromeec_command *cec_command, crosec_io_t crosec_io, void *context); /** * Performs light verification of the EC<->AP communication channel. * * @return 0 on success, -1 on error */ int google_chromeec_hello(void); /** * Send a command to a CrOS EC * * @param cec_command: CrOS EC command to send * @return 0 for success. Non-zero for error. */ int google_chromeec_command(struct chromeec_command *cec_command); struct google_chromeec_event_info { uint64_t log_events; uint64_t sci_events; uint64_t smi_events; uint64_t s3_wake_events; uint64_t s3_device_events; uint64_t s5_wake_events; uint64_t s0ix_wake_events; }; void google_chromeec_events_init(const struct google_chromeec_event_info *info, bool is_s3_wakeup); /* * Get next available MKBP event in ec_response_get_next_event. Returns 0 on * success, < 0 otherwise. */ int google_chromeec_get_mkbp_event(struct ec_response_get_next_event *event); /* Log host events to eventlog based on the mask provided. */ void google_chromeec_log_events(uint64_t mask); /** * Protect/un-protect EC flash regions. * * @param mask Set/clear the requested bits in 'flags' * @param flags Flash protection flags * @param resp Pointer to response structure * @return 0 on success, -1 on error */ int google_chromeec_flash_protect(uint32_t mask, uint32_t flags, struct ec_response_flash_protect *resp); /** * Calculate image hash for vboot. * * @param hash_type The hash types supported by the EC for vboot * @param offset The offset to start hashing in flash * @param resp Pointer to response structure * @return 0 on success, -1 on error */ int google_chromeec_start_vboot_hash(enum ec_vboot_hash_type hash_type, uint32_t offset, struct ec_response_vboot_hash *resp); /** * Return the EC's vboot image hash. * * @param offset Get hash for flash region beginning here * @param resp Pointer to response structure * @return 0 on success, -1 on error * */ int google_chromeec_get_vboot_hash(uint32_t offset, struct ec_response_vboot_hash *resp); /** * Get offset and size of the specified EC flash region. * * @param region Which region of EC flash * @param offset Gets filled with region's offset * @param size Gets filled with region's size * @return 0 on success, -1 on error */ int google_chromeec_flash_region_info(enum ec_flash_region region, uint32_t *offset, uint32_t *size); /** * Erase a region of EC flash. * * @param offset Where to begin erasing * @param size Size of area to erase * @return 0 on success, -1 on error */ int google_chromeec_flash_erase(uint32_t region_offset, uint32_t region_size); /** * Return information about the entire flash. * * @param info Pointer to response structure * @return 0 on success, -1 on error */ int google_chromeec_flash_info(struct ec_response_flash_info *info); /** * Write a block into EC flash. * * @param data Pointer to data to write to flash, prefixed by a * struct ec_params_flash_write * @param offset Offset to begin writing data * @param size Number of bytes to be written to flash from data * @return 0 on success, -1 on error */ int google_chromeec_flash_write_block(const uint8_t *data, uint32_t size); /** * Verify flash using EFS if available. * * @param region Which flash region to verify * @return 0 on success, -1 on error */ int google_chromeec_efs_verify(enum ec_flash_region region); /** * Command EC to perform battery cutoff. * * @param flags Flags to pass to the EC * @return 0 on success, -1 on error */ int google_chromeec_battery_cutoff(uint8_t flags); /** * Check if the EC is requesting the system to limit input power. * * @param limit_power If successful, limit_power is 1 if EC is requesting * input power limits, otherwise 0. * @return 0 on success, -1 on error */ int google_chromeec_read_limit_power_request(int *limit_power); /** * Get information about the protocol that the EC speaks. * * @param resp Filled with host command protocol information. * @return 0 on success, -1 on error */ int google_chromeec_get_protocol_info( struct ec_response_get_protocol_info *resp); /** * Get available versions of the specified command. * * @param command Command ID * @param pmask Pointer to version mask * @return 0 on success, -1 on error */ int google_chromeec_get_cmd_versions(int command, uint32_t *pmask); /** * Get number of PD-capable USB ports from EC. * * @param *num_ports If successful, num_ports is the number * of PD-capable USB ports according to the EC. * @return 0 on success, -1 on error */ int google_chromeec_get_num_pd_ports(unsigned int *num_ports); /* Structure representing the capabilities of a USB-PD port */ struct usb_pd_port_caps { enum ec_pd_power_role_caps power_role_cap; enum ec_pd_try_power_role_caps try_power_role_cap; enum ec_pd_data_role_caps data_role_cap; enum ec_pd_port_location port_location; }; /** * Get role-based capabilities for a USB-PD port * * @param port Which port to get information about * @param *power_role_cap The power-role capability of the port * @param *try_power_role_cap The Try-power-role capability of the port * @param *data_role_cap The data role capability of the port * @param *port_location Location of the port on the device * @return 0 on success, -1 on error */ int google_chromeec_get_pd_port_caps(int port, struct usb_pd_port_caps *port_caps); /** * Get the keyboard configuration / layout information from EC * * @param *keybd If successful, this is filled with EC filled parameters * @return 0 on success, -1 on error */ int google_chromeec_get_keybd_config(struct ec_response_keybd_config *keybd); /** * Send EC command to perform AP reset * * @return 0 on success, -1 on error */ int google_chromeec_ap_reset(void); /** * Configure the regulator as enabled / disabled. * * @param index Regulator ID * @param enable Set to enable / disable the regulator * @return 0 on success, -1 on error */ int google_chromeec_regulator_enable(uint32_t index, uint8_t enable); /** * Query if the regulator is enabled. * * @param index Regulator ID * @param *enabled If successful, enabled indicates enable/disable status. * @return 0 on success, -1 on error */ int google_chromeec_regulator_is_enabled(uint32_t index, uint8_t *enabled); /** * Set voltage for the voltage regulator within the range specified. * * @param index Regulator ID * @param min_mv Minimum voltage * @param max_mv Maximum voltage * @return 0 on success, -1 on error */ int google_chromeec_regulator_set_voltage(uint32_t index, uint32_t min_mv, uint32_t max_mv); /** * Get the currently configured voltage for the voltage regulator. * * @param index Regulator ID * @param *voltage_mv If successful, voltage_mv is filled with current voltage * @return 0 on success, -1 on error */ int google_chromeec_regulator_get_voltage(uint32_t index, uint32_t *voltage_mv); /** * Clear EC AP_IDLE flag */ void google_chromeec_clear_ec_ap_idle(void); /** * Check if battery is present and battery level is above critical threshold. * * @return true: if the battery is present and battery level is above critical threshold * false: any of the above conditions is not true */ bool google_chromeec_is_battery_present_and_above_critical_threshold(void); #if CONFIG(HAVE_ACPI_TABLES) /** * Writes USB Type-C PD related information to the SSDT * * @param dev EC device */ void google_chromeec_fill_ssdt_generator(const struct device *dev); /** * Returns the ACPI name for the EC device. * * @param dev EC device */ const char *google_chromeec_acpi_name(const struct device *dev); #endif /* HAVE_ACPI_TABLES */ #endif /* _EC_GOOGLE_CHROMEEC_EC_H */