test/avocado/machine_aspeed.py: Add I2C tests to ast2500-evb

Create a named I2C temperature sensor device on the command line,
instantiate device from Linux since it is not part of the device tree,
and check the temperature is correctly reported under sysfs.

Signed-off-by: Cédric Le Goater <clg@kaod.org>

diff --git a/tests/avocado/machine_aspeed.py b/tests/avocado/machine_aspeed.py
index 31a0fb6cd865c951744052b6f0083cd28de5b7d6..4d2766e1d44d1952c75393fec2fdbb382743c098 100644 (file)
--- a/tests/avocado/machine_aspeed.py
+++ b/tests/avocado/machine_aspeed.py
@@ -119,7 +119,20 @@ class AST2x00Machine(QemuSystemTest):
         image_path = self.fetch_asset(image_url, asset_hash=image_hash,
                                       algorithm='sha256')
 
+        self.vm.add_args('-device',
+                         'tmp105,bus=aspeed.i2c.bus.3,address=0x4d,id=tmp-test');
         self.do_test_arm_aspeed_buidroot_start(image_path, '0x0')
+
+        exec_command_and_wait_for_pattern(self,
+             'echo lm75 0x4d > /sys/class/i2c-dev/i2c-3/device/new_device',
+             'i2c i2c-3: new_device: Instantiated device lm75 at 0x4d');
+        exec_command_and_wait_for_pattern(self,
+                             'cat /sys/class/hwmon/hwmon1/temp1_input', '0')
+        self.vm.command('qom-set', path='/machine/peripheral/tmp-test',
+                        property='temperature', value=18000);
+        exec_command_and_wait_for_pattern(self,
+                             'cat /sys/class/hwmon/hwmon1/temp1_input', '18000')
+
         self.do_test_arm_aspeed_buidroot_poweroff()
 
     def test_arm_ast2600_evb_builroot(self):