| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <stdint.h> |
| #include <string.h> |
| #include <assert.h> |
| #include <console/console.h> |
| #include <delay.h> |
| #include <device/device.h> |
| #include <device/path.h> |
| #include <elog.h> |
| #include <rtc.h> |
| #include <security/vboot/vboot_common.h> |
| #include <stdlib.h> |
| #include <timer.h> |
| |
| #include "ec.h" |
| |
| #define INVALID_HCMD 0xFF |
| |
| /* |
| * Map UHEPI masks to non UHEPI commands in order to support old EC FW |
| * which does not support UHEPI command. |
| */ |
| static const struct { |
| uint8_t set_cmd; |
| uint8_t clear_cmd; |
| uint8_t get_cmd; |
| } event_map[] = { |
| [EC_HOST_EVENT_MAIN] = { |
| INVALID_HCMD, EC_CMD_HOST_EVENT_CLEAR, |
| INVALID_HCMD, |
| }, |
| [EC_HOST_EVENT_B] = { |
| INVALID_HCMD, EC_CMD_HOST_EVENT_CLEAR_B, |
| EC_CMD_HOST_EVENT_GET_B, |
| }, |
| [EC_HOST_EVENT_SCI_MASK] = { |
| EC_CMD_HOST_EVENT_SET_SCI_MASK, INVALID_HCMD, |
| EC_CMD_HOST_EVENT_GET_SCI_MASK, |
| }, |
| [EC_HOST_EVENT_SMI_MASK] = { |
| EC_CMD_HOST_EVENT_SET_SMI_MASK, INVALID_HCMD, |
| EC_CMD_HOST_EVENT_GET_SMI_MASK, |
| }, |
| [EC_HOST_EVENT_ALWAYS_REPORT_MASK] = { |
| INVALID_HCMD, INVALID_HCMD, INVALID_HCMD, |
| }, |
| [EC_HOST_EVENT_ACTIVE_WAKE_MASK] = { |
| EC_CMD_HOST_EVENT_SET_WAKE_MASK, INVALID_HCMD, |
| EC_CMD_HOST_EVENT_GET_WAKE_MASK, |
| }, |
| [EC_HOST_EVENT_LAZY_WAKE_MASK_S0IX] = { |
| EC_CMD_HOST_EVENT_SET_WAKE_MASK, INVALID_HCMD, |
| EC_CMD_HOST_EVENT_GET_WAKE_MASK, |
| }, |
| [EC_HOST_EVENT_LAZY_WAKE_MASK_S3] = { |
| EC_CMD_HOST_EVENT_SET_WAKE_MASK, INVALID_HCMD, |
| EC_CMD_HOST_EVENT_GET_WAKE_MASK, |
| }, |
| [EC_HOST_EVENT_LAZY_WAKE_MASK_S5] = { |
| EC_CMD_HOST_EVENT_SET_WAKE_MASK, INVALID_HCMD, |
| EC_CMD_HOST_EVENT_GET_WAKE_MASK, |
| }, |
| }; |
| |
| uint8_t google_chromeec_calc_checksum(const uint8_t *data, int size) |
| { |
| int csum; |
| |
| for (csum = 0; size > 0; data++, size--) |
| csum += *data; |
| return (uint8_t)(csum & 0xff); |
| } |
| |
| int google_chromeec_kbbacklight(int percent) |
| { |
| struct ec_params_pwm_set_keyboard_backlight params = { |
| .percent = percent % 101, |
| }; |
| struct chromeec_command cmd = { |
| .cmd_code = EC_CMD_PWM_SET_KEYBOARD_BACKLIGHT, |
| .cmd_version = 0, |
| .cmd_data_in = ¶ms, |
| .cmd_data_out = NULL, |
| .cmd_size_in = sizeof(params), |
| .cmd_size_out = 0, |
| .cmd_dev_index = 0, |
| }; |
| |
| google_chromeec_command(&cmd); |
| printk(BIOS_DEBUG, "Google Chrome set keyboard backlight: status (%x)\n", |
| cmd.cmd_code); |
| return cmd.cmd_code; |
| } |
| |
| void google_chromeec_post(uint8_t postcode) |
| { |
| /* backlight is a percent. postcode is a uint8_t. |
| * Convert the uint8_t to %. |
| */ |
| postcode = (postcode/4) + (postcode/8); |
| google_chromeec_kbbacklight(postcode); |
| } |
| |
| /* |
| * Query the EC for specified mask indicating enabled events. |
| * The EC maintains separate event masks for SMI, SCI and WAKE. |
| */ |
| static int google_chromeec_uhepi_cmd(uint8_t mask, uint8_t action, |
| uint64_t *value) |
| { |
| int ret; |
| struct ec_params_host_event params = { |
| .action = action, |
| .mask_type = mask, |
| }; |
| struct ec_response_host_event resp = {}; |
| struct chromeec_command cmd = { |
| .cmd_code = EC_CMD_HOST_EVENT, |
| .cmd_version = 0, |
| .cmd_data_in = ¶ms, |
| .cmd_size_in = sizeof(params), |
| .cmd_data_out = &resp, |
| .cmd_size_out = sizeof(resp), |
| .cmd_dev_index = 0, |
| }; |
| |
| if (action != EC_HOST_EVENT_GET) |
| params.value = *value; |
| else |
| *value = 0; |
| |
| ret = google_chromeec_command(&cmd); |
| |
| if (action != EC_HOST_EVENT_GET) |
| return ret; |
| if (ret == 0) |
| *value = resp.value; |
| return ret; |
| } |
| |
| static int google_chromeec_handle_non_uhepi_cmd(uint8_t hcmd, uint8_t action, |
| uint64_t *value) |
| { |
| int ret = -1; |
| struct ec_params_host_event_mask params = {}; |
| struct ec_response_host_event_mask resp = {}; |
| struct chromeec_command cmd = { |
| .cmd_code = hcmd, |
| .cmd_version = 0, |
| .cmd_data_in = ¶ms, |
| .cmd_size_in = sizeof(params), |
| .cmd_data_out = &resp, |
| .cmd_size_out = sizeof(resp), |
| .cmd_dev_index = 0, |
| }; |
| |
| if (hcmd == INVALID_HCMD) |
| return ret; |
| |
| if (action != EC_HOST_EVENT_GET) |
| params.mask = (uint32_t)*value; |
| else |
| *value = 0; |
| |
| ret = google_chromeec_command(&cmd); |
| |
| if (action != EC_HOST_EVENT_GET) |
| return ret; |
| if (ret == 0) |
| *value = resp.mask; |
| |
| return ret; |
| } |
| |
| bool google_chromeec_is_uhepi_supported(void) |
| { |
| #define UHEPI_SUPPORTED 1 |
| #define UHEPI_NOT_SUPPORTED 2 |
| |
| static int uhepi_support; |
| |
| if (!uhepi_support) { |
| uhepi_support = google_chromeec_check_feature |
| (EC_FEATURE_UNIFIED_WAKE_MASKS) > 0 ? UHEPI_SUPPORTED : |
| UHEPI_NOT_SUPPORTED; |
| printk(BIOS_DEBUG, "Chrome EC: UHEPI %s\n", |
| uhepi_support == UHEPI_SUPPORTED ? |
| "supported" : "not supported"); |
| } |
| return uhepi_support == UHEPI_SUPPORTED; |
| } |
| |
| static uint64_t google_chromeec_get_mask(uint8_t type) |
| { |
| uint64_t value = 0; |
| |
| if (google_chromeec_is_uhepi_supported()) { |
| google_chromeec_uhepi_cmd(type, EC_HOST_EVENT_GET, &value); |
| } else { |
| assert(type < ARRAY_SIZE(event_map)); |
| google_chromeec_handle_non_uhepi_cmd( |
| event_map[type].get_cmd, |
| EC_HOST_EVENT_GET, &value); |
| } |
| return value; |
| } |
| |
| static int google_chromeec_clear_mask(uint8_t type, uint64_t mask) |
| { |
| if (google_chromeec_is_uhepi_supported()) |
| return google_chromeec_uhepi_cmd(type, |
| EC_HOST_EVENT_CLEAR, &mask); |
| |
| assert(type < ARRAY_SIZE(event_map)); |
| return google_chromeec_handle_non_uhepi_cmd( |
| event_map[type].clear_cmd, |
| EC_HOST_EVENT_CLEAR, &mask); |
| } |
| |
| static int google_chromeec_set_mask(uint8_t type, uint64_t mask) |
| { |
| if (google_chromeec_is_uhepi_supported()) |
| return google_chromeec_uhepi_cmd(type, |
| EC_HOST_EVENT_SET, &mask); |
| |
| assert(type < ARRAY_SIZE(event_map)); |
| return google_chromeec_handle_non_uhepi_cmd( |
| event_map[type].set_cmd, |
| EC_HOST_EVENT_SET, &mask); |
| } |
| |
| static int google_chromeec_set_s3_lazy_wake_mask(uint64_t mask) |
| { |
| printk(BIOS_DEBUG, "Chrome EC: Set S3 LAZY WAKE mask to 0x%016llx\n", |
| mask); |
| return google_chromeec_set_mask |
| (EC_HOST_EVENT_LAZY_WAKE_MASK_S3, mask); |
| } |
| |
| static int google_chromeec_set_s5_lazy_wake_mask(uint64_t mask) |
| { |
| printk(BIOS_DEBUG, "Chrome EC: Set S5 LAZY WAKE mask to 0x%016llx\n", |
| mask); |
| return google_chromeec_set_mask |
| (EC_HOST_EVENT_LAZY_WAKE_MASK_S5, mask); |
| } |
| |
| static int google_chromeec_set_s0ix_lazy_wake_mask(uint64_t mask) |
| { |
| printk(BIOS_DEBUG, "Chrome EC: Set S0iX LAZY WAKE mask to 0x%016llx\n", |
| mask); |
| return google_chromeec_set_mask |
| (EC_HOST_EVENT_LAZY_WAKE_MASK_S0IX, mask); |
| } |
| static void google_chromeec_set_lazy_wake_masks(uint64_t s5_mask, |
| uint64_t s3_mask, uint64_t s0ix_mask) |
| { |
| if (google_chromeec_set_s5_lazy_wake_mask(s5_mask)) |
| printk(BIOS_DEBUG, "Error: Set S5 LAZY WAKE mask failed\n"); |
| if (google_chromeec_set_s3_lazy_wake_mask(s3_mask)) |
| printk(BIOS_DEBUG, "Error: Set S3 LAZY WAKE mask failed\n"); |
| /* |
| * Make sure S0Ix is supported before trying to set up the EC's |
| * S0Ix lazy wake mask. |
| */ |
| if (s0ix_mask && google_chromeec_set_s0ix_lazy_wake_mask(s0ix_mask)) |
| printk(BIOS_DEBUG, "Error: Set S0iX LAZY WAKE mask failed\n"); |
| } |
| |
| uint64_t google_chromeec_get_events_b(void) |
| { |
| return google_chromeec_get_mask(EC_HOST_EVENT_B); |
| } |
| |
| int google_chromeec_clear_events_b(uint64_t mask) |
| { |
| printk(BIOS_DEBUG, |
| "Chrome EC: clear events_b mask to 0x%016llx\n", mask); |
| return google_chromeec_clear_mask(EC_HOST_EVENT_B, mask); |
| } |
| |
| int google_chromeec_get_mkbp_event(struct ec_response_get_next_event *event) |
| { |
| struct chromeec_command cmd = { |
| .cmd_code = EC_CMD_GET_NEXT_EVENT, |
| .cmd_version = 0, |
| .cmd_data_in = NULL, |
| .cmd_size_in = 0, |
| .cmd_data_out = event, |
| .cmd_size_out = sizeof(*event), |
| .cmd_dev_index = 0, |
| }; |
| |
| return google_chromeec_command(&cmd); |
| } |
| |
| /* Get the current device event mask */ |
| uint64_t google_chromeec_get_device_enabled_events(void) |
| { |
| struct ec_params_device_event params = { |
| .param = EC_DEVICE_EVENT_PARAM_GET_ENABLED_EVENTS, |
| }; |
| struct ec_response_device_event resp = {}; |
| struct chromeec_command cmd = { |
| .cmd_code = EC_CMD_DEVICE_EVENT, |
| .cmd_version = 0, |
| .cmd_data_in = ¶ms, |
| .cmd_size_in = sizeof(params), |
| .cmd_data_out = &resp, |
| .cmd_size_out = sizeof(resp), |
| .cmd_dev_index = 0, |
| }; |
| |
| if (google_chromeec_command(&cmd) == 0) |
| return resp.event_mask; |
| |
| return 0; |
| } |
| |
| /* Set the current device event mask */ |
| int google_chromeec_set_device_enabled_events(uint64_t mask) |
| { |
| struct ec_params_device_event params = { |
| .event_mask = (uint32_t)mask, |
| .param = EC_DEVICE_EVENT_PARAM_SET_ENABLED_EVENTS, |
| }; |
| struct ec_response_device_event resp = {}; |
| struct chromeec_command cmd = { |
| .cmd_code = EC_CMD_DEVICE_EVENT, |
| .cmd_version = 0, |
| .cmd_data_in = ¶ms, |
| .cmd_size_in = sizeof(params), |
| .cmd_data_out = &resp, |
| .cmd_size_out = sizeof(resp), |
| .cmd_dev_index = 0, |
| }; |
| |
| return google_chromeec_command(&cmd); |
| } |
| |
| /* Read and clear pending device events */ |
| uint64_t google_chromeec_get_device_current_events(void) |
| { |
| struct ec_params_device_event params = { |
| .param = EC_DEVICE_EVENT_PARAM_GET_CURRENT_EVENTS, |
| }; |
| struct ec_response_device_event resp = {}; |
| struct chromeec_command cmd = { |
| .cmd_code = EC_CMD_DEVICE_EVENT, |
| .cmd_version = 0, |
| .cmd_data_in = ¶ms, |
| .cmd_size_in = sizeof(params), |
| .cmd_data_out = &resp, |
| .cmd_size_out = sizeof(resp), |
| .cmd_dev_index = 0, |
| }; |
| |
| if (google_chromeec_command(&cmd) == 0) |
| return resp.event_mask; |
| |
| return 0; |
| } |
| |
| static void google_chromeec_log_device_events(uint64_t mask) |
| { |
| uint64_t events; |
| int i; |
| |
| if (!CONFIG(ELOG) || !mask) |
| return; |
| |
| if (google_chromeec_check_feature(EC_FEATURE_DEVICE_EVENT) != 1) |
| return; |
| |
| events = google_chromeec_get_device_current_events() & mask; |
| printk(BIOS_INFO, "EC Device Events: 0x%016llx\n", events); |
| |
| for (i = 0; i < sizeof(events) * 8; i++) { |
| if (EC_DEVICE_EVENT_MASK(i) & events) |
| elog_add_event_byte(ELOG_TYPE_EC_DEVICE_EVENT, i); |
| } |
| } |
| |
| void google_chromeec_log_events(uint64_t mask) |
| { |
| uint64_t events; |
| int i; |
| |
| if (!CONFIG(ELOG)) |
| return; |
| |
| events = google_chromeec_get_events_b() & mask; |
| |
| /* |
| * This loop starts at 1 because the EC_HOST_EVENT_MASK macro subtracts |
| * 1 from its argument before applying the left-shift operator. This |
| * prevents a left-shift of -1 happening, and covers the entire 64-bit |
| * range of the event mask. |
| */ |
| for (i = 1; i <= sizeof(events) * 8; i++) { |
| if (EC_HOST_EVENT_MASK(i) & events) |
| elog_add_event_byte(ELOG_TYPE_EC_EVENT, i); |
| } |
| |
| google_chromeec_clear_events_b(events); |
| } |
| |
| void google_chromeec_events_init(const struct google_chromeec_event_info *info, |
| bool is_s3_wakeup) |
| { |
| if (is_s3_wakeup) { |
| google_chromeec_log_events(info->log_events | |
| info->s3_wake_events); |
| |
| /* Log and clear device events that may wake the system. */ |
| google_chromeec_log_device_events(info->s3_device_events); |
| |
| /* Disable SMI and wake events. */ |
| google_chromeec_set_smi_mask(0); |
| |
| /* Restore SCI event mask. */ |
| google_chromeec_set_sci_mask(info->sci_events); |
| |
| } else { |
| google_chromeec_set_smi_mask(info->smi_events); |
| |
| google_chromeec_log_events(info->log_events | |
| info->s5_wake_events); |
| |
| if (google_chromeec_is_uhepi_supported()) |
| google_chromeec_set_lazy_wake_masks |
| (info->s5_wake_events, |
| info->s3_wake_events, |
| info->s0ix_wake_events); |
| } |
| |
| /* Clear wake event mask. */ |
| google_chromeec_set_wake_mask(0); |
| } |
| |
| int google_chromeec_check_feature(int feature) |
| { |
| struct ec_response_get_features resp = {}; |
| struct chromeec_command cmd = { |
| .cmd_code = EC_CMD_GET_FEATURES, |
| .cmd_version = 0, |
| .cmd_size_in = 0, |
| .cmd_data_out = &resp, |
| .cmd_size_out = sizeof(resp), |
| .cmd_dev_index = 0, |
| }; |
| |
| if (google_chromeec_command(&cmd) != 0) |
| return -1; |
| |
| if (feature >= 8 * sizeof(resp.flags)) |
| return -1; |
| |
| return resp.flags[feature / 32] & EC_FEATURE_MASK_0(feature); |
| } |
| |
| int google_chromeec_get_cmd_versions(int command, uint32_t *pmask) |
| { |
| struct ec_params_get_cmd_versions_v1 params = { |
| .cmd = command, |
| }; |
| struct ec_response_get_cmd_versions resp = {}; |
| struct chromeec_command cmd = { |
| .cmd_code = EC_CMD_GET_CMD_VERSIONS, |
| .cmd_version = 1, |
| .cmd_size_in = sizeof(params), |
| .cmd_data_in = ¶ms, |
| .cmd_size_out = sizeof(resp), |
| .cmd_data_out = &resp, |
| .cmd_dev_index = 0, |
| }; |
| |
| if (google_chromeec_command(&cmd) != 0) |
| return -1; |
| |
| *pmask = resp.version_mask; |
| return 0; |
| } |
| |
| int google_chromeec_get_vboot_hash(uint32_t offset, |
| struct ec_response_vboot_hash *resp) |
| { |
| struct ec_params_vboot_hash params = { |
| .cmd = EC_VBOOT_HASH_GET, |
| .offset = offset, |
| }; |
| struct chromeec_command cmd = { |
| .cmd_code = EC_CMD_VBOOT_HASH, |
| .cmd_version = 0, |
| .cmd_size_in = sizeof(params), |
| .cmd_data_in = ¶ms, |
| .cmd_size_out = sizeof(*resp), |
| .cmd_data_out = resp, |
| .cmd_dev_index = 0, |
| }; |
| |
| if (google_chromeec_command(&cmd) != 0) |
| return -1; |
| |
| return 0; |
| } |
| |
| int google_chromeec_start_vboot_hash(enum ec_vboot_hash_type hash_type, |
| uint32_t hash_offset, |
| struct ec_response_vboot_hash *resp) |
| { |
| struct ec_params_vboot_hash params = { |
| .cmd = EC_VBOOT_HASH_START, |
| .hash_type = hash_type, |
| .nonce_size = 0, |
| .offset = hash_offset, |
| }; |
| struct chromeec_command cmd = { |
| .cmd_code = EC_CMD_VBOOT_HASH, |
| .cmd_version = 0, |
| .cmd_size_in = sizeof(params), |
| .cmd_data_in = ¶ms, |
| .cmd_size_out = sizeof(*resp), |
| .cmd_data_out = resp, |
| .cmd_dev_index = 0, |
| }; |
| |
| if (google_chromeec_command(&cmd) != 0) |
| return -1; |
| |
| return 0; |
| } |
| |
| int google_chromeec_flash_protect(uint32_t mask, uint32_t flags, |
| struct ec_response_flash_protect *resp) |
| { |
| struct ec_params_flash_protect params = { |
| .mask = mask, |
| .flags = flags, |
| }; |
| struct chromeec_command cmd = { |
| .cmd_code = EC_CMD_FLASH_PROTECT, |
| .cmd_version = EC_VER_FLASH_PROTECT, |
| .cmd_size_in = sizeof(params), |
| .cmd_data_in = ¶ms, |
| .cmd_size_out = sizeof(*resp), |
| .cmd_data_out = resp, |
| .cmd_dev_index = 0, |
| }; |
| |
| if (google_chromeec_command(&cmd) != 0) |
| return -1; |
| |
| return 0; |
| } |
| |
| int google_chromeec_flash_region_info(enum ec_flash_region region, |
| uint32_t *offset, uint32_t *size) |
| { |
| struct ec_params_flash_region_info params = { |
| .region = region, |
| }; |
| struct ec_response_flash_region_info resp = {}; |
| struct chromeec_command cmd = { |
| .cmd_code = EC_CMD_FLASH_REGION_INFO, |
| .cmd_version = EC_VER_FLASH_REGION_INFO, |
| .cmd_size_in = sizeof(params), |
| .cmd_data_in = ¶ms, |
| .cmd_size_out = sizeof(resp), |
| .cmd_data_out = &resp, |
| .cmd_dev_index = 0, |
| }; |
| |
| if (google_chromeec_command(&cmd) != 0) |
| return -1; |
| |
| if (offset) |
| *offset = resp.offset; |
| if (size) |
| *size = resp.size; |
| |
| return 0; |
| } |
| |
| int google_chromeec_flash_erase(uint32_t offset, uint32_t size) |
| { |
| struct ec_params_flash_erase params = { |
| .offset = offset, |
| .size = size, |
| }; |
| struct chromeec_command cmd = { |
| .cmd_code = EC_CMD_FLASH_ERASE, |
| .cmd_version = 0, |
| .cmd_size_in = sizeof(params), |
| .cmd_data_in = ¶ms, |
| .cmd_size_out = 0, |
| .cmd_data_out = NULL, |
| .cmd_dev_index = 0, |
| }; |
| |
| if (google_chromeec_command(&cmd) != 0) |
| return -1; |
| |
| return 0; |
| } |
| |
| int google_chromeec_flash_info(struct ec_response_flash_info *info) |
| { |
| struct chromeec_command cmd; |
| |
| cmd.cmd_code = EC_CMD_FLASH_INFO; |
| cmd.cmd_version = 0; |
| cmd.cmd_size_in = 0; |
| cmd.cmd_data_in = NULL; |
| cmd.cmd_size_out = sizeof(*info); |
| cmd.cmd_data_out = info; |
| cmd.cmd_dev_index = 0; |
| |
| if (google_chromeec_command(&cmd) != 0) |
| return -1; |
| |
| return 0; |
| } |
| |
| /* |
| * Write a block into EC flash. Expects params_data to be a buffer where |
| * the first N bytes are a struct ec_params_flash_write, and the rest of it |
| * is the data to write to flash. |
| */ |
| int google_chromeec_flash_write_block(const uint8_t *params_data, |
| uint32_t bufsize) |
| { |
| struct chromeec_command cmd = { |
| .cmd_code = EC_CMD_FLASH_WRITE, |
| .cmd_version = EC_VER_FLASH_WRITE, |
| .cmd_size_out = 0, |
| .cmd_data_out = NULL, |
| .cmd_size_in = bufsize, |
| .cmd_data_in = params_data, |
| .cmd_dev_index = 0, |
| }; |
| |
| assert(params_data); |
| |
| return google_chromeec_command(&cmd); |
| } |
| |
| /* |
| * EFS verification of flash. |
| */ |
| int google_chromeec_efs_verify(enum ec_flash_region region) |
| { |
| struct ec_params_efs_verify params = { |
| .region = region, |
| }; |
| struct chromeec_command cmd = { |
| .cmd_code = EC_CMD_EFS_VERIFY, |
| .cmd_version = 0, |
| .cmd_size_in = sizeof(params), |
| .cmd_data_in = ¶ms, |
| .cmd_size_out = 0, |
| .cmd_data_out = NULL, |
| .cmd_dev_index = 0, |
| }; |
| int rv; |
| |
| /* It's okay if the EC doesn't support EFS */ |
| rv = google_chromeec_command(&cmd); |
| if (rv != 0 && (cmd.cmd_code == EC_RES_INVALID_COMMAND)) |
| return 0; |
| else if (rv != 0) |
| return -1; |
| |
| return 0; |
| } |
| |
| int google_chromeec_battery_cutoff(uint8_t flags) |
| { |
| struct ec_params_battery_cutoff params = { |
| .flags = flags, |
| }; |
| struct chromeec_command cmd = { |
| .cmd_code = EC_CMD_BATTERY_CUT_OFF, |
| .cmd_version = 1, |
| .cmd_size_in = sizeof(params), |
| .cmd_data_in = ¶ms, |
| .cmd_data_out = NULL, |
| .cmd_size_out = 0, |
| .cmd_dev_index = 0, |
| }; |
| |
| if (google_chromeec_command(&cmd) != 0) |
| return -1; |
| |
| return 0; |
| } |
| |
| int google_chromeec_read_limit_power_request(int *limit_power) |
| { |
| struct ec_params_charge_state params = { |
| .cmd = CHARGE_STATE_CMD_GET_PARAM, |
| .get_param.param = CS_PARAM_LIMIT_POWER, |
| }; |
| struct ec_response_charge_state resp = {}; |
| struct chromeec_command cmd = { |
| .cmd_code = EC_CMD_CHARGE_STATE, |
| .cmd_version = 0, |
| .cmd_size_in = sizeof(params), |
| .cmd_data_in = ¶ms, |
| .cmd_size_out = sizeof(resp), |
| .cmd_data_out = &resp, |
| .cmd_dev_index = 0, |
| }; |
| int rv; |
| |
| rv = google_chromeec_command(&cmd); |
| |
| if (rv != 0 && (cmd.cmd_code == EC_RES_INVALID_COMMAND || |
| cmd.cmd_code == EC_RES_INVALID_PARAM)) { |
| printk(BIOS_INFO, "PARAM_LIMIT_POWER not supported by EC.\n"); |
| *limit_power = 0; |
| return 0; |
| } else if (rv != 0) { |
| return -1; |
| } |
| |
| *limit_power = resp.get_param.value; |
| |
| return 0; |
| } |
| |
| int google_chromeec_get_protocol_info( |
| struct ec_response_get_protocol_info *resp) |
| { |
| struct chromeec_command cmd = { |
| .cmd_code = EC_CMD_GET_PROTOCOL_INFO, |
| .cmd_version = 0, |
| .cmd_size_in = 0, |
| .cmd_data_in = NULL, |
| .cmd_data_out = resp, |
| .cmd_size_out = sizeof(*resp), |
| .cmd_dev_index = 0, |
| }; |
| |
| if (google_chromeec_command(&cmd)) |
| return -1; |
| |
| return 0; |
| } |
| |
| int google_chromeec_set_sku_id(uint32_t skuid) |
| { |
| struct ec_sku_id_info params = { |
| .sku_id = skuid |
| }; |
| struct chromeec_command cmd = { |
| .cmd_code = EC_CMD_SET_SKU_ID, |
| .cmd_version = 0, |
| .cmd_size_in = sizeof(params), |
| .cmd_data_in = ¶ms, |
| .cmd_data_out = NULL, |
| .cmd_size_out = 0, |
| .cmd_dev_index = 0, |
| }; |
| |
| if (google_chromeec_command(&cmd) != 0) |
| return -1; |
| |
| return 0; |
| } |
| |
| #if CONFIG(EC_GOOGLE_CHROMEEC_RTC) |
| int rtc_get(struct rtc_time *time) |
| { |
| struct ec_response_rtc resp = {}; |
| struct chromeec_command cmd = { |
| .cmd_code = EC_CMD_RTC_GET_VALUE, |
| .cmd_version = 0, |
| .cmd_size_in = 0, |
| .cmd_data_out = &resp, |
| .cmd_size_out = sizeof(resp), |
| .cmd_dev_index = 0, |
| }; |
| |
| if (google_chromeec_command(&cmd) != 0) |
| return -1; |
| |
| return rtc_to_tm(resp.time, time); |
| } |
| #endif |
| |
| int google_chromeec_reboot(int dev_idx, enum ec_reboot_cmd type, uint8_t flags) |
| { |
| struct ec_params_reboot_ec params = { |
| .cmd = type, |
| .flags = flags, |
| }; |
| struct ec_response_get_version resp = {}; |
| struct chromeec_command cmd = { |
| .cmd_code = EC_CMD_REBOOT_EC, |
| .cmd_version = 0, |
| .cmd_data_in = ¶ms, |
| .cmd_data_out = &resp, |
| .cmd_size_in = sizeof(params), |
| .cmd_size_out = 0, /* ignore response, if any */ |
| .cmd_dev_index = dev_idx, |
| }; |
| |
| return google_chromeec_command(&cmd); |
| } |
| |
| static int cbi_get_uint32(uint32_t *id, uint32_t tag) |
| { |
| struct ec_params_get_cbi params = { |
| .tag = tag, |
| }; |
| uint32_t r = 0; |
| struct chromeec_command cmd = { |
| .cmd_code = EC_CMD_GET_CROS_BOARD_INFO, |
| .cmd_version = 0, |
| .cmd_data_in = ¶ms, |
| .cmd_data_out = &r, |
| .cmd_size_in = sizeof(params), |
| .cmd_size_out = sizeof(r), |
| .cmd_dev_index = 0, |
| }; |
| int rv; |
| |
| rv = google_chromeec_command(&cmd); |
| if (rv != 0) |
| return rv; |
| |
| *id = r; |
| return 0; |
| } |
| |
| int google_chromeec_cbi_get_sku_id(uint32_t *id) |
| { |
| return cbi_get_uint32(id, CBI_TAG_SKU_ID); |
| } |
| |
| int google_chromeec_cbi_get_fw_config(uint64_t *fw_config) |
| { |
| uint32_t config; |
| |
| if (cbi_get_uint32(&config, CBI_TAG_FW_CONFIG)) |
| return -1; |
| |
| *fw_config = (uint64_t)config; |
| /* |
| * If SSFC is configured to be part of FW_CONFIG, add it at the most significant |
| * 32 bits. |
| */ |
| if (CONFIG(EC_GOOGLE_CHROMEEC_INCLUDE_SSFC_IN_FW_CONFIG)) { |
| uint32_t ssfc; |
| |
| if (!google_chromeec_cbi_get_ssfc(&ssfc)) |
| *fw_config |= (uint64_t)ssfc << 32; |
| } |
| return 0; |
| } |
| |
| int google_chromeec_cbi_get_oem_id(uint32_t *id) |
| { |
| return cbi_get_uint32(id, CBI_TAG_OEM_ID); |
| } |
| |
| int google_chromeec_cbi_get_board_version(uint32_t *version) |
| { |
| return cbi_get_uint32(version, CBI_TAG_BOARD_VERSION); |
| } |
| |
| int google_chromeec_cbi_get_ssfc(uint32_t *ssfc) |
| { |
| return cbi_get_uint32(ssfc, CBI_TAG_SSFC); |
| } |
| |
| static int cbi_get_string(char *buf, size_t bufsize, uint32_t tag) |
| { |
| struct ec_params_get_cbi params = { |
| .tag = tag, |
| }; |
| struct chromeec_command cmd = { |
| .cmd_code = EC_CMD_GET_CROS_BOARD_INFO, |
| .cmd_version = 0, |
| .cmd_data_in = ¶ms, |
| .cmd_data_out = buf, |
| .cmd_size_in = sizeof(params), |
| .cmd_size_out = bufsize, |
| }; |
| int rv; |
| |
| rv = google_chromeec_command(&cmd); |
| if (rv != 0) |
| return rv; |
| |
| /* Ensure NUL termination. */ |
| buf[bufsize - 1] = '\0'; |
| |
| return 0; |
| } |
| |
| int google_chromeec_cbi_get_dram_part_num(char *buf, size_t bufsize) |
| { |
| return cbi_get_string(buf, bufsize, CBI_TAG_DRAM_PART_NUM); |
| } |
| |
| int google_chromeec_cbi_get_oem_name(char *buf, size_t bufsize) |
| { |
| return cbi_get_string(buf, bufsize, CBI_TAG_OEM_NAME); |
| } |
| |
| int google_chromeec_get_board_version(uint32_t *version) |
| { |
| struct ec_response_board_version resp; |
| struct chromeec_command cmd = { |
| .cmd_code = EC_CMD_GET_BOARD_VERSION, |
| .cmd_version = 0, |
| .cmd_size_in = 0, |
| .cmd_size_out = sizeof(resp), |
| .cmd_data_out = &resp, |
| .cmd_dev_index = 0, |
| }; |
| |
| if (google_chromeec_command(&cmd)) |
| return -1; |
| |
| *version = resp.board_version; |
| return 0; |
| } |
| |
| uint32_t google_chromeec_get_sku_id(void) |
| { |
| struct ec_sku_id_info resp; |
| struct chromeec_command cmd = { |
| .cmd_code = EC_CMD_GET_SKU_ID, |
| .cmd_version = 0, |
| .cmd_size_in = 0, |
| .cmd_size_out = sizeof(resp), |
| .cmd_data_out = &resp, |
| .cmd_dev_index = 0, |
| }; |
| |
| if (google_chromeec_command(&cmd) != 0) |
| return 0; |
| |
| return resp.sku_id; |
| } |
| |
| static uint16_t google_chromeec_get_uptime_info( |
| struct ec_response_uptime_info *resp) |
| { |
| struct chromeec_command cmd = { |
| .cmd_code = EC_CMD_GET_UPTIME_INFO, |
| .cmd_version = 0, |
| .cmd_data_in = NULL, |
| .cmd_size_in = 0, |
| .cmd_data_out = resp, |
| .cmd_size_out = sizeof(*resp), |
| .cmd_dev_index = 0, |
| }; |
| |
| google_chromeec_command(&cmd); |
| return cmd.cmd_code; |
| } |
| |
| bool google_chromeec_get_ap_watchdog_flag(void) |
| { |
| int i; |
| struct ec_response_uptime_info resp; |
| |
| if (google_chromeec_get_uptime_info(&resp)) |
| return false; |
| |
| if (resp.ec_reset_flags & EC_RESET_FLAG_AP_WATCHDOG) |
| return true; |
| |
| /* Find the last valid entry */ |
| for (i = ARRAY_SIZE(resp.recent_ap_reset) - 1; i >= 0; i--) { |
| if (resp.recent_ap_reset[i].reset_time_ms == 0) |
| continue; |
| return (resp.recent_ap_reset[i].reset_cause == |
| CHIPSET_RESET_AP_WATCHDOG); |
| } |
| |
| return false; |
| } |
| |
| int google_chromeec_i2c_xfer(uint8_t chip, uint8_t addr, int alen, |
| uint8_t *buffer, int len, int is_read) |
| { |
| union { |
| struct ec_params_i2c_passthru p; |
| uint8_t outbuf[EC_HOST_PARAM_SIZE]; |
| } params; |
| union { |
| struct ec_response_i2c_passthru r; |
| uint8_t inbuf[EC_HOST_PARAM_SIZE]; |
| } response; |
| struct ec_params_i2c_passthru *p = ¶ms.p; |
| struct ec_response_i2c_passthru *r = &response.r; |
| struct ec_params_i2c_passthru_msg *msg = p->msg; |
| struct chromeec_command cmd; |
| uint8_t *pdata; |
| int read_len, write_len; |
| int size; |
| int rv; |
| |
| p->port = 0; |
| |
| if (alen != 1) { |
| printk(BIOS_ERR, "Unsupported address length %d\n", alen); |
| return -1; |
| } |
| if (is_read) { |
| read_len = len; |
| write_len = alen; |
| p->num_msgs = 2; |
| } else { |
| read_len = 0; |
| write_len = alen + len; |
| p->num_msgs = 1; |
| } |
| |
| size = sizeof(*p) + p->num_msgs * sizeof(*msg); |
| if (size + write_len > sizeof(params)) { |
| printk(BIOS_ERR, "Params too large for buffer\n"); |
| return -1; |
| } |
| if (sizeof(*r) + read_len > sizeof(response)) { |
| printk(BIOS_ERR, "Read length too big for buffer\n"); |
| return -1; |
| } |
| |
| /* Create a message to write the register address and optional data */ |
| pdata = (uint8_t *)p + size; |
| msg->addr_flags = chip; |
| msg->len = write_len; |
| pdata[0] = addr; |
| if (!is_read) |
| memcpy(pdata + 1, buffer, len); |
| msg++; |
| |
| if (read_len) { |
| msg->addr_flags = chip | EC_I2C_FLAG_READ; |
| msg->len = read_len; |
| } |
| |
| cmd.cmd_code = EC_CMD_I2C_PASSTHRU; |
| cmd.cmd_version = 0; |
| cmd.cmd_data_in = p; |
| cmd.cmd_size_in = size + write_len; |
| cmd.cmd_data_out = r; |
| cmd.cmd_size_out = sizeof(*r) + read_len; |
| cmd.cmd_dev_index = 0; |
| rv = google_chromeec_command(&cmd); |
| if (rv != 0) |
| return rv; |
| |
| /* Parse response */ |
| if (r->i2c_status & EC_I2C_STATUS_ERROR) { |
| printk(BIOS_ERR, "Transfer failed with status=0x%x\n", |
| r->i2c_status); |
| return -1; |
| } |
| |
| if (cmd.cmd_size_out < sizeof(*r) + read_len) { |
| printk(BIOS_ERR, "Truncated read response\n"); |
| return -1; |
| } |
| |
| if (read_len) |
| memcpy(buffer, r->data, read_len); |
| |
| return 0; |
| } |
| |
| int google_chromeec_set_sci_mask(uint64_t mask) |
| { |
| printk(BIOS_DEBUG, "Chrome EC: Set SCI mask to 0x%016llx\n", mask); |
| return google_chromeec_set_mask(EC_HOST_EVENT_SCI_MASK, mask); |
| } |
| |
| int google_chromeec_set_smi_mask(uint64_t mask) |
| { |
| printk(BIOS_DEBUG, "Chrome EC: Set SMI mask to 0x%016llx\n", mask); |
| return google_chromeec_set_mask(EC_HOST_EVENT_SMI_MASK, mask); |
| } |
| |
| int google_chromeec_set_wake_mask(uint64_t mask) |
| { |
| printk(BIOS_DEBUG, "Chrome EC: Set WAKE mask to 0x%016llx\n", mask); |
| return google_chromeec_set_mask |
| (EC_HOST_EVENT_ACTIVE_WAKE_MASK, mask); |
| } |
| |
| uint64_t google_chromeec_get_wake_mask(void) |
| { |
| return google_chromeec_get_mask(EC_HOST_EVENT_ACTIVE_WAKE_MASK); |
| } |
| |
| int google_chromeec_set_usb_charge_mode(uint8_t port_id, enum usb_charge_mode mode) |
| { |
| struct ec_params_usb_charge_set_mode params = { |
| .usb_port_id = port_id, |
| .mode = mode, |
| }; |
| struct chromeec_command cmd = { |
| .cmd_code = EC_CMD_USB_CHARGE_SET_MODE, |
| .cmd_version = 0, |
| .cmd_size_in = sizeof(params), |
| .cmd_data_in = ¶ms, |
| .cmd_size_out = 0, |
| .cmd_data_out = NULL, |
| .cmd_dev_index = 0, |
| }; |
| |
| return google_chromeec_command(&cmd); |
| } |
| |
| /* Get charger voltage and current. Also returns type of charger */ |
| int google_chromeec_get_usb_pd_power_info(enum usb_chg_type *type, |
| uint16_t *current_max, uint16_t *voltage_max) |
| { |
| struct ec_params_usb_pd_power_info params = { |
| .port = PD_POWER_CHARGING_PORT, |
| }; |
| struct ec_response_usb_pd_power_info resp = {}; |
| struct chromeec_command cmd = { |
| .cmd_code = EC_CMD_USB_PD_POWER_INFO, |
| .cmd_version = 0, |
| .cmd_data_in = ¶ms, |
| .cmd_size_in = sizeof(params), |
| .cmd_data_out = &resp, |
| .cmd_size_out = sizeof(resp), |
| .cmd_dev_index = 0, |
| }; |
| struct usb_chg_measures m; |
| int rv; |
| |
| rv = google_chromeec_command(&cmd); |
| if (rv != 0) |
| return rv; |
| |
| /* values are given in milliAmps and milliVolts */ |
| *type = resp.type; |
| m = resp.meas; |
| *voltage_max = m.voltage_max; |
| *current_max = m.current_max; |
| return 0; |
| } |
| |
| int google_chromeec_override_dedicated_charger_limit(uint16_t current_lim, |
| uint16_t voltage_lim) |
| { |
| struct ec_params_dedicated_charger_limit params = { |
| .current_lim = current_lim, |
| .voltage_lim = voltage_lim, |
| }; |
| struct chromeec_command cmd = { |
| .cmd_code = EC_CMD_OVERRIDE_DEDICATED_CHARGER_LIMIT, |
| .cmd_version = 0, |
| .cmd_data_in = ¶ms, |
| .cmd_size_in = sizeof(params), |
| .cmd_data_out = NULL, |
| .cmd_size_out = 0, |
| .cmd_dev_index = 0, |
| }; |
| |
| return google_chromeec_command(&cmd); |
| } |
| |
| int google_chromeec_set_usb_pd_role(uint8_t port, enum usb_pd_control_role role) |
| { |
| struct ec_params_usb_pd_control params = { |
| .port = port, |
| .role = role, |
| .mux = USB_PD_CTRL_MUX_NO_CHANGE, |
| .swap = USB_PD_CTRL_SWAP_NONE, |
| }; |
| struct ec_response_usb_pd_control resp; |
| struct chromeec_command cmd = { |
| .cmd_code = EC_CMD_USB_PD_CONTROL, |
| .cmd_version = 0, |
| .cmd_data_in = ¶ms, |
| .cmd_size_in = sizeof(params), |
| .cmd_data_out = &resp, |
| .cmd_size_out = sizeof(resp), |
| .cmd_dev_index = 0, |
| }; |
| |
| return google_chromeec_command(&cmd); |
| } |
| |
| int google_chromeec_hello(void) |
| { |
| struct ec_params_hello params = { |
| .in_data = 0x10203040, |
| }; |
| struct ec_response_hello resp = {}; |
| struct chromeec_command cmd = { |
| .cmd_code = EC_CMD_HELLO, |
| .cmd_version = 0, |
| .cmd_data_in = ¶ms, |
| .cmd_data_out = &resp, |
| .cmd_size_in = sizeof(params), |
| .cmd_size_out = sizeof(resp), |
| .cmd_dev_index = 0, |
| }; |
| |
| int rv = google_chromeec_command(&cmd); |
| if (rv) |
| return -1; |
| |
| if (resp.out_data != (params.in_data + 0x01020304)) |
| return -1; |
| |
| return 0; |
| } |
| |
| /* |
| * Convert a reset cause ID to human-readable string, providing total coverage |
| * of the 'cause' space. The returned string points to static storage and must |
| * not be free()ed. |
| */ |
| static const char *reset_cause_to_str(uint16_t cause) |
| { |
| /* See also ChromiumOS EC include/chipset.h for details. */ |
| static const char * const reset_causes[] = { |
| "(reset unknown)", |
| "reset: board custom", |
| "reset: ap hang detected", |
| "reset: console command", |
| "reset: keyboard sysreset", |
| "reset: keyboard warm reboot", |
| "reset: debug warm reboot", |
| "reset: at AP's request", |
| "reset: during EC initialization", |
| "reset: AP watchdog", |
| }; |
| |
| static const size_t shutdown_cause_begin = 1 << 15; |
| static const char * const shutdown_causes[] = { |
| "shutdown: power failure", |
| "shutdown: during EC initialization", |
| "shutdown: board custom", |
| "shutdown: battery voltage startup inhibit", |
| "shutdown: power wait asserted", |
| "shutdown: critical battery", |
| "shutdown: by console command", |
| "shutdown: entering G3", |
| "shutdown: thermal", |
| "shutdown: power button", |
| }; |
| |
| if (cause < ARRAY_SIZE(reset_causes)) |
| return reset_causes[cause]; |
| |
| if (cause < shutdown_cause_begin) |
| return "(reset unknown)"; |
| |
| if (cause < shutdown_cause_begin + ARRAY_SIZE(shutdown_causes)) |
| return shutdown_causes[cause - shutdown_cause_begin]; |
| |
| return "(shutdown unknown)"; |
| } |
| |
| /* |
| * Copy the EC's information about resets of the AP and its own uptime for |
| * debugging purposes. |
| */ |
| static void google_chromeec_log_uptimeinfo(void) |
| { |
| /* See also ec_commands.h EC_RESET_FLAG_* for details. */ |
| static const char * const reset_flag_strings[] = { |
| "other", |
| "reset-pin", |
| "brownout", |
| "power-on", |
| "watchdog", |
| "soft", |
| "hibernate", |
| "rtc-alarm", |
| "wake-pin", |
| "low-battery", |
| "sysjump", |
| "hard", |
| "ap-off", |
| "preserved", |
| "usb-resume", |
| "rdd", |
| "rbox", |
| "security", |
| "ap-watchdog", |
| }; |
| struct ec_response_uptime_info cmd_resp; |
| int i, flag, flag_count; |
| |
| if (google_chromeec_get_uptime_info(&cmd_resp)) { |
| /* |
| * Deliberately say nothing for EC's that don't support this |
| * command |
| */ |
| return; |
| } |
| |
| printk(BIOS_DEBUG, "Google Chrome EC uptime: %d.%03d seconds\n", |
| cmd_resp.time_since_ec_boot_ms / MSECS_PER_SEC, |
| cmd_resp.time_since_ec_boot_ms % MSECS_PER_SEC); |
| |
| printk(BIOS_DEBUG, "Google Chrome AP resets since EC boot: %d\n", |
| cmd_resp.ap_resets_since_ec_boot); |
| |
| printk(BIOS_DEBUG, "Google Chrome most recent AP reset causes:\n"); |
| for (i = 0; i != ARRAY_SIZE(cmd_resp.recent_ap_reset); ++i) { |
| if (cmd_resp.recent_ap_reset[i].reset_time_ms == 0) |
| continue; |
| |
| printk(BIOS_DEBUG, "\t%d.%03d: %d %s\n", |
| cmd_resp.recent_ap_reset[i].reset_time_ms / |
| MSECS_PER_SEC, |
| cmd_resp.recent_ap_reset[i].reset_time_ms % |
| MSECS_PER_SEC, |
| cmd_resp.recent_ap_reset[i].reset_cause, |
| reset_cause_to_str( |
| cmd_resp.recent_ap_reset[i].reset_cause)); |
| } |
| |
| printk(BIOS_DEBUG, "Google Chrome EC reset flags at last EC boot: "); |
| flag_count = 0; |
| for (flag = 0; flag != ARRAY_SIZE(reset_flag_strings); ++flag) { |
| if ((cmd_resp.ec_reset_flags & (1 << flag)) != 0) { |
| if (flag_count) |
| printk(BIOS_DEBUG, " | "); |
| printk(BIOS_DEBUG, "%s", reset_flag_strings[flag]); |
| flag_count++; |
| } |
| } |
| printk(BIOS_DEBUG, "\n"); |
| } |
| |
| /* Cache and retrieve the EC image type (ro or rw) */ |
| enum ec_image google_chromeec_get_current_image(void) |
| { |
| static enum ec_image ec_image_type = EC_IMAGE_UNKNOWN; |
| |
| if (ec_image_type != EC_IMAGE_UNKNOWN) |
| return ec_image_type; |
| |
| struct ec_response_get_version resp = {}; |
| struct chromeec_command cmd = { |
| .cmd_code = EC_CMD_GET_VERSION, |
| .cmd_version = 0, |
| .cmd_data_out = &resp, |
| .cmd_size_in = 0, |
| .cmd_size_out = sizeof(resp), |
| .cmd_dev_index = 0, |
| }; |
| |
| google_chromeec_command(&cmd); |
| |
| if (cmd.cmd_code) { |
| printk(BIOS_DEBUG, |
| "Google Chrome EC: version command failed!\n"); |
| } else { |
| printk(BIOS_DEBUG, "Google Chrome EC: version:\n"); |
| printk(BIOS_DEBUG, " ro: %s\n", resp.version_string_ro); |
| printk(BIOS_DEBUG, " rw: %s\n", resp.version_string_rw); |
| printk(BIOS_DEBUG, " running image: %d\n", |
| resp.current_image); |
| ec_image_type = resp.current_image; |
| } |
| |
| /* Will still be UNKNOWN if command failed */ |
| return ec_image_type; |
| } |
| |
| int google_chromeec_get_num_pd_ports(unsigned int *num_ports) |
| { |
| struct ec_response_charge_port_count resp = {}; |
| struct chromeec_command cmd = { |
| .cmd_code = EC_CMD_USB_PD_PORTS, |
| .cmd_version = 0, |
| .cmd_data_out = &resp, |
| .cmd_size_in = 0, |
| .cmd_size_out = sizeof(resp), |
| .cmd_dev_index = 0, |
| }; |
| int rv; |
| |
| rv = google_chromeec_command(&cmd); |
| if (rv) |
| return rv; |
| |
| *num_ports = resp.port_count; |
| return 0; |
| } |
| |
| int google_chromeec_get_pd_port_caps(int port, |
| struct usb_pd_port_caps *port_caps) |
| { |
| struct ec_params_get_pd_port_caps params = { |
| .port = port, |
| }; |
| struct ec_response_get_pd_port_caps resp = {}; |
| struct chromeec_command cmd = { |
| .cmd_code = EC_CMD_GET_PD_PORT_CAPS, |
| .cmd_version = 0, |
| .cmd_data_in = ¶ms, |
| .cmd_size_in = sizeof(params), |
| .cmd_data_out = &resp, |
| .cmd_size_out = sizeof(resp), |
| .cmd_dev_index = 0, |
| }; |
| int rv; |
| |
| rv = google_chromeec_command(&cmd); |
| if (rv) |
| return rv; |
| |
| port_caps->power_role_cap = resp.pd_power_role_cap; |
| port_caps->try_power_role_cap = resp.pd_try_power_role_cap; |
| port_caps->data_role_cap = resp.pd_data_role_cap; |
| port_caps->port_location = resp.pd_port_location; |
| |
| return 0; |
| } |
| |
| void google_chromeec_init(void) |
| { |
| google_chromeec_log_uptimeinfo(); |
| } |
| |
| int google_ec_running_ro(void) |
| { |
| return (google_chromeec_get_current_image() == EC_IMAGE_RO); |
| } |
| |
| /* Returns data role and type of device connected */ |
| static int google_chromeec_usb_pd_get_info(int port, bool *ufp, bool *dbg_acc, |
| bool *active_cable, uint8_t *dp_mode) |
| { |
| struct ec_params_usb_pd_control pd_control = { |
| .port = port, |
| .role = USB_PD_CTRL_ROLE_NO_CHANGE, |
| .mux = USB_PD_CTRL_ROLE_NO_CHANGE, |
| .swap = USB_PD_CTRL_SWAP_NONE, |
| }; |
| struct ec_response_usb_pd_control_v2 resp = {}; |
| struct chromeec_command cmd = { |
| .cmd_code = EC_CMD_USB_PD_CONTROL, |
| .cmd_version = 2, |
| .cmd_data_in = &pd_control, |
| .cmd_size_in = sizeof(pd_control), |
| .cmd_data_out = &resp, |
| .cmd_size_out = sizeof(resp), |
| .cmd_dev_index = 0, |
| }; |
| |
| if (google_chromeec_command(&cmd) < 0) |
| return -1; |
| |
| *ufp = !(resp.role & PD_CTRL_RESP_ROLE_DATA); |
| *dbg_acc = (resp.cc_state == PD_CC_DFP_DEBUG_ACC); |
| *active_cable = !!(resp.control_flags & USB_PD_CTRL_ACTIVE_CABLE); |
| *dp_mode = resp.dp_mode; |
| |
| return 0; |
| } |
| |
| int google_chromeec_typec_control_enter_dp_mode(int port) |
| { |
| if (!google_chromeec_check_feature(EC_FEATURE_TYPEC_REQUIRE_AP_MODE_ENTRY)) |
| return 0; |
| |
| struct ec_params_typec_control typec_control = { |
| .port = port, |
| .command = TYPEC_CONTROL_COMMAND_ENTER_MODE, |
| .mode_to_enter = TYPEC_MODE_DP, |
| }; |
| |
| struct chromeec_command cmd = { |
| .cmd_code = EC_CMD_TYPEC_CONTROL, |
| .cmd_version = 0, |
| .cmd_data_in = &typec_control, |
| .cmd_size_in = sizeof(typec_control), |
| .cmd_data_out = NULL, |
| .cmd_size_out = 0, |
| .cmd_dev_index = 0, |
| }; |
| |
| if (google_chromeec_command(&cmd) < 0) |
| return -1; |
| |
| return 0; |
| } |
| |
| /** |
| * Check for the current mux state in EC. Flags representing the mux state found |
| * in ec_commands.h |
| */ |
| int google_chromeec_usb_get_pd_mux_info(int port, uint8_t *flags) |
| { |
| struct ec_params_usb_pd_mux_info req_mux = { |
| .port = port, |
| }; |
| struct ec_response_usb_pd_mux_info resp_mux = {}; |
| struct chromeec_command cmd = { |
| .cmd_code = EC_CMD_USB_PD_MUX_INFO, |
| .cmd_version = 0, |
| .cmd_data_in = &req_mux, |
| .cmd_size_in = sizeof(req_mux), |
| .cmd_data_out = &resp_mux, |
| .cmd_size_out = sizeof(resp_mux), |
| .cmd_dev_index = 0, |
| }; |
| |
| if (port < 0) |
| return -1; |
| |
| if (google_chromeec_command(&cmd) < 0) |
| return -1; |
| |
| *flags = resp_mux.flags; |
| return 0; |
| } |
| |
| /* |
| * Obtain any USB-C mux data needed for the specified port |
| * in: 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) |
| { |
| uint8_t mux_flags; |
| uint8_t dp_pin_mode; |
| bool ufp, dbg_acc, active_cable; |
| |
| if (google_chromeec_usb_get_pd_mux_info(port, &mux_flags) < 0) { |
| printk(BIOS_ERR, "Port C%d: get_pd_mux_info failed\n", port); |
| return -1; |
| } |
| |
| if (google_chromeec_usb_pd_get_info(port, &ufp, &dbg_acc, |
| &active_cable, &dp_pin_mode) < 0) { |
| printk(BIOS_ERR, "Port C%d: pd_control failed\n", port); |
| return -1; |
| } |
| |
| mux_info->usb = !!(mux_flags & USB_PD_MUX_USB_ENABLED); |
| mux_info->dp = !!(mux_flags & USB_PD_MUX_DP_ENABLED); |
| mux_info->polarity = !!(mux_flags & USB_PD_MUX_POLARITY_INVERTED); |
| mux_info->hpd_irq = !!(mux_flags & USB_PD_MUX_HPD_IRQ); |
| mux_info->hpd_lvl = !!(mux_flags & USB_PD_MUX_HPD_LVL); |
| mux_info->ufp = !!ufp; |
| mux_info->dbg_acc = !!dbg_acc; |
| mux_info->cable = !!active_cable; |
| mux_info->dp_pin_mode = dp_pin_mode; |
| |
| return 0; |
| } |
| |
| /** |
| * Check if EC/TCPM is in an alternate mode or not. |
| * |
| * @param svid SVID of the alternate mode to check |
| * @return 0: Not in the mode. -1: Error. |
| * >=1: bitmask of the ports that are in the mode. |
| */ |
| static int google_chromeec_pd_get_amode(uint16_t svid) |
| { |
| struct ec_response_usb_pd_ports resp; |
| struct chromeec_command cmd = { |
| .cmd_code = EC_CMD_USB_PD_PORTS, |
| .cmd_version = 0, |
| .cmd_data_in = NULL, |
| .cmd_size_in = 0, |
| .cmd_data_out = &resp, |
| .cmd_size_out = sizeof(resp), |
| .cmd_dev_index = 0, |
| }; |
| int i; |
| int ret = 0; |
| |
| if (google_chromeec_command(&cmd) < 0) |
| return -1; |
| |
| for (i = 0; i < resp.num_ports; i++) { |
| struct ec_params_usb_pd_get_mode_request params; |
| struct ec_params_usb_pd_get_mode_response resp2; |
| int svid_idx = 0; |
| |
| do { |
| /* Reset cmd in each iteration in case |
| google_chromeec_command changes it. */ |
| params.port = i; |
| params.svid_idx = svid_idx; |
| cmd.cmd_code = EC_CMD_USB_PD_GET_AMODE; |
| cmd.cmd_version = 0; |
| cmd.cmd_data_in = ¶ms; |
| cmd.cmd_size_in = sizeof(params); |
| cmd.cmd_data_out = &resp2; |
| cmd.cmd_size_out = sizeof(resp2); |
| cmd.cmd_dev_index = 0; |
| |
| if (google_chromeec_command(&cmd) < 0) |
| return -1; |
| if (resp2.svid == svid) |
| ret |= BIT(i); |
| svid_idx++; |
| } while (resp2.svid); |
| } |
| |
| return ret; |
| } |
| |
| #define USB_SID_DISPLAYPORT 0xff01 |
| |
| /** |
| * Wait for DisplayPort to be ready |
| * |
| * @param timeout_ms Wait aborts after <timeout_ms> ms. |
| * @return -1: Error. 0: Timeout. |
| * >=1: Bitmask of the ports that DP device is connected |
| */ |
| int google_chromeec_wait_for_displayport(long timeout_ms) |
| { |
| struct stopwatch sw; |
| int ret = 0; |
| |
| printk(BIOS_INFO, "Waiting for DisplayPort\n"); |
| stopwatch_init_msecs_expire(&sw, timeout_ms); |
| while (1) { |
| ret = google_chromeec_pd_get_amode(USB_SID_DISPLAYPORT); |
| if (ret > 0) |
| break; |
| |
| if (ret < 0) { |
| printk(BIOS_ERR, "Can't get alternate mode!\n"); |
| return ret; |
| } |
| |
| if (stopwatch_expired(&sw)) { |
| printk(BIOS_WARNING, |
| "DisplayPort not ready after %ldms. Abort.\n", |
| timeout_ms); |
| return 0; |
| } |
| mdelay(200); |
| } |
| printk(BIOS_INFO, "DisplayPort ready after %lld ms\n", |
| stopwatch_duration_msecs(&sw)); |
| |
| return ret; |
| } |
| |
| int google_chromeec_wait_for_dp_hpd(int port, long timeout_ms) |
| { |
| uint8_t mux_flags; |
| struct stopwatch sw; |
| |
| stopwatch_init_msecs_expire(&sw, timeout_ms); |
| do { |
| google_chromeec_usb_get_pd_mux_info(port, &mux_flags); |
| if (stopwatch_expired(&sw)) { |
| printk(BIOS_WARNING, "HPD not ready after %ldms. Abort.\n", timeout_ms); |
| return -1; |
| } |
| mdelay(100); |
| } while (!(mux_flags & USB_PD_MUX_HPD_LVL) || !(mux_flags & USB_PD_MUX_DP_ENABLED)); |
| printk(BIOS_INFO, "HPD ready after %lld ms\n", stopwatch_duration_msecs(&sw)); |
| |
| return 0; |
| } |
| |
| int google_chromeec_get_keybd_config(struct ec_response_keybd_config *keybd) |
| { |
| struct chromeec_command cmd = { |
| .cmd_code = EC_CMD_GET_KEYBD_CONFIG, |
| .cmd_version = 0, |
| .cmd_data_in = NULL, |
| .cmd_size_in = 0, |
| .cmd_data_out = keybd, |
| .cmd_size_out = sizeof(*keybd), |
| .cmd_dev_index = 0, |
| }; |
| |
| if (google_chromeec_command(&cmd)) |
| return -1; |
| |
| return 0; |
| } |
| |
| int google_chromeec_ap_reset(void) |
| { |
| struct chromeec_command cmd = { |
| .cmd_code = EC_CMD_AP_RESET, |
| .cmd_version = 0, |
| .cmd_data_in = NULL, |
| .cmd_size_in = 0, |
| .cmd_data_out = NULL, |
| .cmd_size_out = 0, |
| .cmd_dev_index = 0, |
| }; |
| |
| if (google_chromeec_command(&cmd)) |
| return -1; |
| |
| return 0; |
| } |
| |
| int google_chromeec_regulator_enable(uint32_t index, uint8_t enable) |
| { |
| struct ec_params_regulator_enable params = { |
| .index = index, |
| .enable = enable, |
| }; |
| struct chromeec_command cmd = { |
| .cmd_code = EC_CMD_REGULATOR_ENABLE, |
| .cmd_version = 0, |
| .cmd_data_in = ¶ms, |
| .cmd_size_in = sizeof(params), |
| .cmd_data_out = NULL, |
| .cmd_size_out = 0, |
| .cmd_dev_index = 0, |
| }; |
| |
| if (google_chromeec_command(&cmd)) |
| return -1; |
| |
| return 0; |
| } |
| |
| int google_chromeec_regulator_is_enabled(uint32_t index, uint8_t *enabled) |
| { |
| struct ec_params_regulator_is_enabled params = { |
| .index = index, |
| }; |
| struct ec_response_regulator_is_enabled resp = {}; |
| struct chromeec_command cmd = { |
| .cmd_code = EC_CMD_REGULATOR_IS_ENABLED, |
| .cmd_version = 0, |
| .cmd_data_in = ¶ms, |
| .cmd_size_in = sizeof(params), |
| .cmd_data_out = &resp, |
| .cmd_size_out = sizeof(resp), |
| .cmd_dev_index = 0, |
| }; |
| |
| if (google_chromeec_command(&cmd)) |
| return -1; |
| |
| *enabled = resp.enabled; |
| |
| return 0; |
| } |
| |
| int google_chromeec_regulator_set_voltage(uint32_t index, uint32_t min_mv, |
| uint32_t max_mv) |
| { |
| struct ec_params_regulator_set_voltage params = { |
| .index = index, |
| .min_mv = min_mv, |
| .max_mv = max_mv, |
| }; |
| struct chromeec_command cmd = { |
| .cmd_code = EC_CMD_REGULATOR_SET_VOLTAGE, |
| .cmd_version = 0, |
| .cmd_data_in = ¶ms, |
| .cmd_size_in = sizeof(params), |
| .cmd_data_out = NULL, |
| .cmd_size_out = 0, |
| .cmd_dev_index = 0, |
| }; |
| |
| if (google_chromeec_command(&cmd)) |
| return -1; |
| |
| return 0; |
| } |
| |
| int google_chromeec_regulator_get_voltage(uint32_t index, uint32_t *voltage_mv) |
| { |
| struct ec_params_regulator_get_voltage params = { |
| .index = index, |
| }; |
| struct ec_response_regulator_get_voltage resp = {}; |
| struct chromeec_command cmd = { |
| .cmd_code = EC_CMD_REGULATOR_GET_VOLTAGE, |
| .cmd_version = 0, |
| .cmd_data_in = ¶ms, |
| .cmd_size_in = sizeof(params), |
| .cmd_data_out = &resp, |
| .cmd_size_out = sizeof(resp), |
| .cmd_dev_index = 0, |
| }; |
| |
| if (google_chromeec_command(&cmd)) |
| return -1; |
| |
| *voltage_mv = resp.voltage_mv; |
| return 0; |
| } |