| #!/usr/bin/env python3 |
| # -*- coding: utf-8 -*- |
| |
| import fcntl |
| import os |
| from cros.helpers.sysfs import * |
| from ctypes import * |
| |
| EC_CMD_PROTO_VERSION = 0x0000 |
| EC_CMD_HELLO = 0x0001 |
| EC_CMD_GET_VERSION = 0x0002 |
| EC_CMD_GET_FEATURES = 0x000D |
| |
| EC_HOST_PARAM_SIZE = 0xFC |
| |
| EC_DEV_IOCXCMD = 0xC014EC00 # _IOWR(EC_DEV_IOC, 0, struct cros_ec_command) |
| |
| ECFEATURES = -1 |
| # Supported features |
| EC_FEATURE_LIMITED = 0 |
| EC_FEATURE_FLASH = 1 |
| EC_FEATURE_PWM_FAN = 2 |
| EC_FEATURE_PWM_KEYB = 3 |
| EC_FEATURE_LIGHTBAR = 4 |
| EC_FEATURE_LED = 5 |
| EC_FEATURE_MOTION_SENSE = 6 |
| EC_FEATURE_KEYB = 7 |
| EC_FEATURE_PSTORE = 8 |
| EC_FEATURE_PORT80 = 9 |
| EC_FEATURE_THERMAL = 10 |
| EC_FEATURE_BKLIGHT_SWITCH = 11 |
| EC_FEATURE_WIFI_SWITCH = 12 |
| EC_FEATURE_HOST_EVENTS = 13 |
| EC_FEATURE_GPIO = 14 |
| EC_FEATURE_I2C = 15 |
| EC_FEATURE_CHARGER = 16 |
| EC_FEATURE_BATTERY = 17 |
| EC_FEATURE_SMART_BATTERY = 18 |
| EC_FEATURE_HANG_DETECT = 19 |
| EC_FEATURE_PMU = 20 |
| EC_FEATURE_SUB_MCU = 21 |
| EC_FEATURE_USB_PD = 22 |
| EC_FEATURE_USB_MUX = 23 |
| EC_FEATURE_MOTION_SENSE_FIFO = 24 |
| EC_FEATURE_VSTORE = 25 |
| EC_FEATURE_USBC_SS_MUX_VIRTUAL = 26 |
| EC_FEATURE_RTC = 27 |
| EC_FEATURE_FINGERPRINT = 28 |
| EC_FEATURE_TOUCHPAD = 29 |
| EC_FEATURE_RWSIG = 30 |
| EC_FEATURE_DEVICE_EVENT = 31 |
| EC_FEATURE_UNIFIED_WAKE_MASKS = 32 |
| EC_FEATURE_HOST_EVENT64 = 33 |
| EC_FEATURE_EXEC_IN_RAM = 34 |
| EC_FEATURE_CEC = 35 |
| EC_FEATURE_MOTION_SENSE_TIGHT_TIMESTAMPS = 36 |
| EC_FEATURE_REFINED_TABLET_MODE_HYSTERESIS = 37 |
| EC_FEATURE_SCP = 39 |
| EC_FEATURE_ISH = 40 |
| |
| |
| class cros_ec_command(Structure): |
| _fields_ = [ |
| ("version", c_uint), |
| ("command", c_uint), |
| ("outsize", c_uint), |
| ("insize", c_uint), |
| ("result", c_uint), |
| ("data", c_ubyte * EC_HOST_PARAM_SIZE), |
| ] |
| |
| |
| class ec_params_hello(Structure): |
| _fields_ = [("in_data", c_uint)] |
| |
| |
| class ec_response_hello(Structure): |
| _fields_ = [("out_data", c_uint)] |
| |
| |
| class ec_params_get_features(Structure): |
| _fields_ = [("in_data", c_ulong)] |
| |
| |
| class ec_response_get_features(Structure): |
| _fields_ = [("out_data", c_ulong)] |
| |
| |
| def EC_FEATURE_MASK_0(event_code): |
| return 1 << (event_code % 32) |
| |
| |
| def EC_FEATURE_MASK_1(event_code): |
| return 1 << (event_code - 32) |
| |
| |
| def is_feature_supported(feature): |
| """ Returns true if the Embedded Controller supports the specified |
| 'feature'. |
| """ |
| global ECFEATURES |
| |
| if ECFEATURES == -1: |
| fd = open("/dev/cros_ec", "r") |
| |
| param = ec_params_get_features() |
| response = ec_response_get_features() |
| |
| cmd = cros_ec_command() |
| cmd.version = 0 |
| cmd.command = EC_CMD_GET_FEATURES |
| cmd.insize = sizeof(param) |
| cmd.outsize = sizeof(response) |
| |
| memmove(addressof(cmd.data), addressof(param), cmd.outsize) |
| fcntl.ioctl(fd, EC_DEV_IOCXCMD, cmd) |
| memmove(addressof(response), addressof(cmd.data), cmd.outsize) |
| |
| fd.close() |
| |
| if cmd.result == 0: |
| ECFEATURES = response.out_data |
| else: |
| return False |
| |
| return (ECFEATURES & EC_FEATURE_MASK_0(feature)) > 0 |
| |
| |
| def check_mcu_abi(s, name): |
| """ Checks that the MCU character device exists in /dev and then verifies |
| the standard MCU ABI in /sys/class/chromeos. |
| """ |
| if not os.path.exists("/dev/cros_" + name): |
| s.skipTest("MCU " + name + " not supported, skipping") |
| files = ["flashinfo", "reboot", "version"] |
| sysfs_check_attributes_exists( |
| s, "/sys/class/chromeos/", "cros_" + name, files, False |
| ) |