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128 lines
4.3 KiB
Python
128 lines
4.3 KiB
Python
import os
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import time
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import infra.basetest
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class TestLibGpiod2(infra.basetest.BRTest):
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# This test needs a Kernel with the GPIO simulator module.
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kern_frag = \
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infra.filepath("tests/package/test_libgpiod2/linux-gpio-sim.fragment")
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config = \
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f"""
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BR2_aarch64=y
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BR2_TOOLCHAIN_EXTERNAL=y
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BR2_TOOLCHAIN_EXTERNAL_BOOTLIN=y
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BR2_LINUX_KERNEL=y
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BR2_LINUX_KERNEL_CUSTOM_VERSION=y
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BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="6.18.40"
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BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
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BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="board/qemu/aarch64-virt/linux.config"
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BR2_LINUX_KERNEL_CONFIG_FRAGMENT_FILES="{kern_frag}"
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BR2_PACKAGE_LIBGPIOD2=y
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BR2_PACKAGE_LIBGPIOD2_TOOLS=y
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BR2_TARGET_GENERIC_GETTY_PORT="ttyAMA0"
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BR2_TARGET_ROOTFS_EXT2=y
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BR2_TARGET_ROOTFS_EXT2_SIZE="120M"
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# BR2_TARGET_ROOTFS_TAR is not set
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"""
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def login(self):
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img = os.path.join(self.builddir, "images", "rootfs.ext2")
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kern = os.path.join(self.builddir, "images", "Image")
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self.emulator.boot(
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arch="aarch64",
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kernel=kern,
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kernel_cmdline=[
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"root=/dev/vda",
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"console=ttyAMA0"],
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options=[
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"-M", "virt",
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"-cpu", "cortex-a57",
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"-m", "512",
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"-drive", f"file={img},if=virtio,format=raw"
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]
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)
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self.emulator.login()
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def setup_gpio_sim(self):
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cfgfsdir = "/sys/kernel/config"
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gpiodir = f"{cfgfsdir}/gpio-sim"
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devname = "br-gpio"
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devdir = f"{gpiodir}/{devname}"
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banks = 2
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lines = 2
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# We need configfs mounted to use the gpio-sim module
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self.assertRunOk(f"mount -t configfs none {cfgfsdir}")
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# We setup a gpio device, with few banks and lines
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self.assertRunOk(f"mkdir {devdir}")
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for bank in range(banks):
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bankdir = f"{devdir}/bank{bank}"
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self.assertRunOk(f"mkdir {bankdir}")
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for line in range(lines):
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linedir = f"{devdir}/bank{bank}/line{line}"
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cmd = f"mkdir {linedir}"
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self.assertRunOk(cmd)
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# Set a name to the line
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name = f"br-b{bank}-l{line}"
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cmd = f"echo {name} > {linedir}/name"
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self.assertRunOk(cmd)
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# We set the total number of lines
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cmd = f"echo {lines} > {bankdir}/num_lines"
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self.assertRunOk(cmd)
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# Now our test device is configured, we can enable it.
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self.assertRunOk(f"echo 1 > {devdir}/live")
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def run_input_gpio_test(self):
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# We get the gpio input value. We expect an inactive state.
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gpioget_cmd = "gpioget --numeric br-b0-l0"
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out, ret = self.emulator.run(gpioget_cmd)
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self.assertEqual(ret, 0)
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self.assertEqual(int(out[0]), 0)
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# We pull up the line.
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cmd = "echo pull-up > /sys/devices/platform/gpio-sim.0/gpiochip0/sim_gpio0/pull"
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self.assertRunOk(cmd)
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# We query again the gpio. We now expect an active state.
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out, ret = self.emulator.run(gpioget_cmd)
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self.assertEqual(ret, 0)
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self.assertEqual(int(out[0]), 1)
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def run_output_gpio_test(self):
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# We query the output state, we expect an inactive state.
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get_gpio1_cmd = "cat /sys/devices/platform/gpio-sim.0/gpiochip0/sim_gpio1/value"
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out, ret = self.emulator.run(get_gpio1_cmd)
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self.assertEqual(ret, 0)
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self.assertEqual(int(out[0]), 0)
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# We run gpioset in background, so we are sure the gpio state
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# is held to the desired state.
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self.assertRunOk("gpioset br-b0-l1=1 &")
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time.sleep(2)
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# We query the output state again, we now expect an active state.
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out, ret = self.emulator.run(get_gpio1_cmd)
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self.assertEqual(ret, 0)
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self.assertEqual(int(out[0]), 1)
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def test_run(self):
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self.login()
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# We check a binary can execute.
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self.assertRunOk("gpiodetect --version")
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self.setup_gpio_sim()
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# We show the basic info reported by tools.
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self.assertRunOk("gpiodetect")
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self.assertRunOk("gpioinfo")
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self.run_input_gpio_test()
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self.run_output_gpio_test()
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