[Buildroot] [git commit branch/2026.05.x] support/testing: libgpiod2: new runtime test
Titouan Christophe via buildroot <[email protected]>
| Newsgroups | net.busybox.buildroot |
|---|---|
| Message-ID | <[email protected]> |
commit: https://gitlab.com/buildroot.org/buildroot/-/commit/2a53b3b6bbc88a00b7efa67afc4224b625252570 branch: https://gitlab.com/buildroot.org/buildroot/-/tree/2026.05.x Signed-off-by: Julien Olivain <[email protected]> (cherry picked from commit b1571cab599a53bb1891f26f0226d64a185d7de8) Signed-off-by: Titouan Christophe <[email protected]> --- DEVELOPERS | 2 + support/testing/tests/package/test_libgpiod2.py | 127 +++++++++++++++++++++ .../package/test_libgpiod2/linux-gpio-sim.fragment | 1 + 3 files changed, 130 insertions(+) diff --git a/DEVELOPERS b/DEVELOPERS index d0484cd84d..ed7f0bc523 100644 --- a/DEVELOPERS +++ b/DEVELOPERS @@ -1930,6 +1930,8 @@ F: support/testing/tests/package/test_libcamera.py F: support/testing/tests/package/test_libcamera/ F: support/testing/tests/package/test_libcurl.py F: support/testing/tests/package/test_libgpgme.py +F: support/testing/tests/package/test_libgpiod2.py +F: support/testing/tests/package/test_libgpiod2/ F: support/testing/tests/package/test_libjxl.py F: support/testing/tests/package/test_lighttpd.py F: support/testing/tests/package/test_links.py diff --git a/support/testing/tests/package/test_libgpiod2.py b/support/testing/tests/package/test_libgpiod2.py new file mode 100644 index 0000000000..8bf471d516 --- /dev/null +++ b/support/testing/tests/package/test_libgpiod2.py @@ -0,0 +1,127 @@ +import os +import time + +import infra.basetest + + +class TestLibGpiod2(infra.basetest.BRTest): + # This test needs a Kernel with the GPIO simulator module. + kern_frag = \ + infra.filepath("tests/package/test_libgpiod2/linux-gpio-sim.fragment") + config = \ + f""" + BR2_aarch64=y + BR2_TOOLCHAIN_EXTERNAL=y + BR2_TOOLCHAIN_EXTERNAL_BOOTLIN=y + BR2_LINUX_KERNEL=y + BR2_LINUX_KERNEL_CUSTOM_VERSION=y + BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="6.18.40" + BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y + BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="board/qemu/aarch64-virt/linux.config" + BR2_LINUX_KERNEL_CONFIG_FRAGMENT_FILES="{kern_frag}" + BR2_PACKAGE_LIBGPIOD2=y + BR2_PACKAGE_LIBGPIOD2_TOOLS=y + BR2_TARGET_GENERIC_GETTY_PORT="ttyAMA0" + BR2_TARGET_ROOTFS_EXT2=y + BR2_TARGET_ROOTFS_EXT2_SIZE="120M" + # BR2_TARGET_ROOTFS_TAR is not set + """ + + def login(self): + img = os.path.join(self.builddir, "images", "rootfs.ext2") + kern = os.path.join(self.builddir, "images", "Image") + self.emulator.boot( + arch="aarch64", + kernel=kern, + kernel_cmdline=[ + "root=/dev/vda", + "console=ttyAMA0"], + options=[ + "-M", "virt", + "-cpu", "cortex-a57", + "-m", "512", + "-drive", f"file={img},if=virtio,format=raw" + ] + ) + self.emulator.login() + + def setup_gpio_sim(self): + cfgfsdir = "/sys/kernel/config" + gpiodir = f"{cfgfsdir}/gpio-sim" + devname = "br-gpio" + devdir = f"{gpiodir}/{devname}" + banks = 2 + lines = 2 + + # We need configfs mounted to use the gpio-sim module + self.assertRunOk(f"mount -t configfs none {cfgfsdir}") + + # We setup a gpio device, with few banks and lines + self.assertRunOk(f"mkdir {devdir}") + for bank in range(banks): + bankdir = f"{devdir}/bank{bank}" + self.assertRunOk(f"mkdir {bankdir}") + for line in range(lines): + linedir = f"{devdir}/bank{bank}/line{line}" + cmd = f"mkdir {linedir}" + self.assertRunOk(cmd) + + # Set a name to the line + name = f"br-b{bank}-l{line}" + cmd = f"echo {name} > {linedir}/name" + self.assertRunOk(cmd) + + # We set the total number of lines + cmd = f"echo {lines} > {bankdir}/num_lines" + self.assertRunOk(cmd) + + # Now our test device is configured, we can enable it. + self.assertRunOk(f"echo 1 > {devdir}/live") + + def run_input_gpio_test(self): + # We get the gpio input value. We expect an inactive state. + gpioget_cmd = "gpioget --numeric br-b0-l0" + out, ret = self.emulator.run(gpioget_cmd) + self.assertEqual(ret, 0) + self.assertEqual(int(out[0]), 0) + + # We pull up the line. + cmd = "echo pull-up > /sys/devices/platform/gpio-sim.0/gpiochip0/sim_gpio0/pull" + self.assertRunOk(cmd) + + # We query again the gpio. We now expect an active state. + out, ret = self.emulator.run(gpioget_cmd) + self.assertEqual(ret, 0) + self.assertEqual(int(out[0]), 1) + + def run_output_gpio_test(self): + # We query the output state, we expect an inactive state. + get_gpio1_cmd = "cat /sys/devices/platform/gpio-sim.0/gpiochip0/sim_gpio1/value" + out, ret = self.emulator.run(get_gpio1_cmd) + self.assertEqual(ret, 0) + self.assertEqual(int(out[0]), 0) + + # We run gpioset in background, so we are sure the gpio state + # is held to the desired state. + self.assertRunOk("gpioset br-b0-l1=1 &") + time.sleep(2) + + # We query the output state again, we now expect an active state. + out, ret = self.emulator.run(get_gpio1_cmd) + self.assertEqual(ret, 0) + self.assertEqual(int(out[0]), 1) + + def test_run(self): + self.login() + + # We check a binary can execute. + self.assertRunOk("gpiodetect --version") + + self.setup_gpio_sim() + + # We show the basic info reported by tools. + self.assertRunOk("gpiodetect") + self.assertRunOk("gpioinfo") + + self.run_input_gpio_test() + self.run_output_gpio_test() diff --git a/support/testing/tests/package/test_libgpiod2/linux-gpio-sim.fragment b/support/testing/tests/package/test_libgpiod2/linux-gpio-sim.fragment new file mode 100644 index 0000000000..e7171af743 --- /dev/null +++ b/support/testing/tests/package/test_libgpiod2/linux-gpio-sim.fragment @@ -0,0 +1 @@ +CONFIG_GPIO_SIM=y _______________________________________________ buildroot mailing list [email protected] https://lists.buildroot.org/mailman/listinfo/buildroot