[#90881] tests: clock_controller: Add LMK04828

Author: p-woj

protoplaster/tests/clock_controller/LMK04828/LMK04828.py

@@ -0,0 +1,29 @@
+from enum import Enum
+
+from protoplaster.tests.spi.spi import SPI
+
+
+class Register(Enum):
+    ID_DEVICE_TYPE = (0x003, 1)
+    ID_PROD = (0x004, 2)
+    ID_MASKREV = (0x006, 1)
+    ID_VNDR = (0x00C, 2)
+
+    def __new__(cls, index, data_bytes=1):
+        obj = object.__new__(cls)
+        obj._value_ = index
+        obj.index = index
+        obj.bytes = data_bytes
+        return obj
+
+
+class LMK04828:
+
+    def __init__(self, bus, device):
+        self.device = SPI(bus, device)
+
+    def read_register(self, reg: Register):
+        return self.device.read_register(reg.index, reg.bytes)
+
+    def write_register(self, reg: Register, value):
+        return self.device.write_register(reg.index, value, reg.bytes)

protoplaster/tests/clock_controller/LMK04828/__init__.py

@@ -0,0 +1,38 @@
+from protoplaster.conf.module import ModuleName
+from protoplaster.tests.clock_controller.LMK04828.LMK04828 import LMK04828, Register
+
+
+@ModuleName("LMK04828")
+class TestLmk04828:
+    """
+    {% macro TestLmk04828(prefix) -%}
+    LMK04828 SPI test
+    ---------------
+    This module provides tests for the LMK04828:
+    {%- endmacro %}
+    """
+
+    def setup_class(self):
+        self.clk = LMK04828(self.bus, self.device)
+
+    def test_default_values(self):
+        """
+        {% macro test_default_values(device) -%}
+          check if read-only LMK04828 registers have their default reset value
+        {%- endmacro %}
+        """
+
+        for reg, value in self._RESET_VALUES.items():
+            actual = self.clk.read_register(reg)
+            assert actual == value, (f"Register {reg.name} (= {actual:#x}) "
+                                     f"does not have reset value {value:#x}")
+
+    def name(self):
+        return f"LMK04828({self.bus}, {self.device})"
+
+    _RESET_VALUES = {
+        Register.ID_DEVICE_TYPE: 0x06,
+        Register.ID_PROD: 0xd05b,
+        Register.ID_MASKREV: 0x20,
+        Register.ID_VNDR: 0x5104,
+    }