Verify the ADC128D818 on the Anacapa R-PDB (i2c8 mux channel 0): two channels are driven with distinct voltages and each is checked to be reported back independently through the kernel hwmon interface, and the channel 0 limit registers are validated.
Signed-off-by: Emmanuel Blot <[email protected]> --- tests/functional/arm/test_aspeed_anacapa.py | 92 +++++++++++++++++++++++++++-- 1 file changed, 86 insertions(+), 6 deletions(-) diff --git a/tests/functional/arm/test_aspeed_anacapa.py b/tests/functional/arm/test_aspeed_anacapa.py index 27f8bd8b56..003d6dfb17 100644 --- a/tests/functional/arm/test_aspeed_anacapa.py +++ b/tests/functional/arm/test_aspeed_anacapa.py @@ -4,22 +4,102 @@ # # SPDX-License-Identifier: GPL-2.0-or-later +import re +import time + from qemu_test import Asset +from qemu_test import exec_command +from qemu_test import exec_command_and_wait_for_pattern +from qemu_test import wait_for_console_pattern from aspeed import FacebookAspeedTest class AnacapaMachine(FacebookAspeedTest): ASSET_ANACAPA_FLASH = Asset( - 'https://github.com/legoater/qemu-aspeed-boot/raw/3fa3212827b04be4034d43b5adeef57c27d6ab18/images/anacapa-bmc/openbmc-20260512025228/obmc-phosphor-image-anacapa-20260512025228.static.mtd.xz', - '2232e241abcfb6d4f6b82cb6c378ce5ce05e364aac6d118785c2b6cc33fe43f3') + "https://github.com/legoater/qemu-aspeed-boot/raw/3fa3212827b04be4034d43b5adeef57c27d6ab18/images/anacapa-bmc/openbmc-20260512025228/obmc-phosphor-image-anacapa-20260512025228.static.mtd.xz";, + "2232e241abcfb6d4f6b82cb6c378ce5ce05e364aac6d118785c2b6cc33fe43f3", + ) + + # ADC128D818 on i2c8 mux (PCA9546 @0x72) channel 0, address 0x1f. + ADC128D818_HWMON = "/sys/bus/i2c/devices/*-001f/hwmon/hwmon*" def test_arm_ast2600_anacapa_openbmc(self): image_path = self.uncompress(self.ASSET_ANACAPA_FLASH) - self.do_test_arm_aspeed_openbmc('anacapa-bmc', image=image_path, - uboot='2019.04', cpu_id='0xf00', - soc='AST2600 rev A3') + self.do_test_arm_aspeed_openbmc( + "anacapa-bmc", + image=image_path, + uboot="2019.04", + cpu_id="0xf00", + soc="AST2600 rev A3", + ) -if __name__ == '__main__': + # perform login + exec_command_and_wait_for_pattern(self, "root", "Password:") + exec_command_and_wait_for_pattern(self, "0penBmc", "#") + + # ADC128D818 test + # + # The current Anacapa OpenBMC device tree is the AST2600 EVB one, and + # therefore does not declare the i2c8 mux nor the ADC128D818 behind it, + # so bind the emulated PCA9546 (@0x72) and then the ADC128D818 (@0x1f, + # mux channel 0) from userspace before probing. + # This should not longer be useful once the Anacapa DT is updated. + exec_command_and_wait_for_pattern( + self, + "echo pca9546 0x72 > /sys/bus/i2c/devices/i2c-8/new_device", + "root@anacapa", + ) + exec_command_and_wait_for_pattern( + self, + "bus=$(basename $(readlink /sys/bus/i2c/devices/8-0072/channel-0)); " + "echo adc128d818 0x1f > /sys/bus/i2c/devices/$bus/new_device", + "root@anacapa", + ) + exec_command_and_wait_for_pattern( + self, f"cat {self.ADC128D818_HWMON}/name", "adc128d818" + ) + + adc = self.find_adc128d818_qom_path() + for ch0_mv, ch1_mv in ((108, 2000), (1280, 500)): + self.vm.cmd("qom-set", path=adc, property="ain0", value=ch0_mv) + self.vm.cmd("qom-set", path=adc, property="ain1", value=ch1_mv) + self.wait_adc128d818_value("in0_input", ch0_mv) + self.wait_adc128d818_value("in1_input", ch1_mv) + + self.assertEqual(self.read_adc128d818_value("in0_min"), 0) + self.assertEqual(self.read_adc128d818_value("in0_max"), 2551) + + def find_adc128d818_qom_path(self): + unattached = "/machine/unattached" + devices = [ + child["name"] + for child in self.vm.cmd("qom-list", path=unattached) + if "adc128d818" in child["type"] + ] + devices.sort(key=lambda name: int(name[len("device[") : -1])) + return f"{unattached}/{devices[0]}" + + def read_adc128d818_value(self, attr): + # split the marker via $m so it only appears in the output, not echo + path = f"{self.ADC128D818_HWMON}/{attr}" + exec_command(self, f'm=END; cat {path}; echo "ADC$m"') + out = wait_for_console_pattern(self, "ADCEND") + match = re.search(rb"(-?\d+)\s+ADCEND", out) + self.assertIsNotNone(match, f"could not read {attr}") + return int(match.group(1)) + + def wait_adc128d818_value(self, attr, expected, timeout=20): + deadline = time.monotonic() + timeout + value = None + while time.monotonic() < deadline: + value = self.read_adc128d818_value(attr) + if value == expected: + return + time.sleep(2) + self.fail(f"{attr} did not reach {expected} (last read {value})") + + +if __name__ == "__main__": FacebookAspeedTest.main() -- 2.50.1
