soc/intel/{adl,mtl,ptl,tgl}: Make IOM ACPI device visibility configurable

Coolstar's Windows drivers require the IOM device to be visible to the
OS, so add a Kconfig to control this, which mainboards will select in
subsequent patches.

TEST=build/boot Win11 on rex/screebo, verify USB4 drivers functional.

Change-Id: I00ef9703179d87b7b476ef18d8d02fcafa9e14ab
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/86792
Reviewed-by: Sean Rhodes <sean@starlabs.systems>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Subrata Banik <subratabanik@google.com>

src/soc/intel/alderlake/acpi/tcss.asl

@@ -331,8 +331,13 @@ Scope (\_SB)
 		Name (_CRS, ResourceTemplate () {
 			Memory32Fixed (ReadWrite, IOM_BASE_ADDRESS, IOM_BASE_SIZE)
 		})
+#if CONFIG(IOM_ACPI_DEVICE_VISIBLE)
+		/* ACPI_STATUS_DEVICE_ALL_ON */
+		Name (_STA, 0xF)
+#else
 		/* ACPI_STATUS_DEVICE_HIDDEN_ON */
 		Name (_STA, 0xB)
+#endif
 	}
 }
 

src/soc/intel/common/block/usb4/Kconfig

@@ -58,3 +58,13 @@ config SOFTWARE_CONNECTION_MANAGER
 	help
 	  Enable SCM so it's used instead of FCM.
 endchoice
+
+config IOM_ACPI_DEVICE_VISIBLE
+	bool
+	depends on SOC_INTEL_COMMON_BLOCK_USB4
+	default n
+	help
+	  Select this config if the mainboard needs the IOM ACPI device
+	  visible to the OS. This is needed for ChromeOS devices for
+	  which ChromeEC acts as the TCPC, otherwise should be left
+	  unselected.

src/soc/intel/meteorlake/acpi/tcss.asl

@@ -334,8 +334,13 @@ Scope (\_SB.PCI0)
 				IOM_BASE_ADDR, IOM_BASE_ADDR_MAX, 0x0,
 				IOM_BASE_SIZE,,,)
 		})
-		/* Hide the device so that Windows does not complain on missing driver */
+#if CONFIG(IOM_ACPI_DEVICE_VISIBLE)
+		/* ACPI_STATUS_DEVICE_ALL_ON */
+		Name (_STA, 0xF)
+#else
+		/* ACPI_STATUS_DEVICE_HIDDEN_ON */
 		Name (_STA, 0xB)
+#endif
 	}
 
 	/*

src/soc/intel/pantherlake/acpi/tcss.asl

@@ -334,8 +334,13 @@ Scope (\_SB.PCI0)
 				IOM_BASE_ADDR, IOM_BASE_ADDR_MAX, 0x0,
 				IOM_BASE_SIZE,,,)
 		})
-		/* Hide the device so that Windows does not complain on missing driver */
+#if CONFIG(IOM_ACPI_DEVICE_VISIBLE)
+		/* ACPI_STATUS_DEVICE_ALL_ON */
+		Name (_STA, 0xF)
+#else
+		/* ACPI_STATUS_DEVICE_HIDDEN_ON */
 		Name (_STA, 0xB)
+#endif
 	}
 
 	/*

src/soc/intel/tigerlake/acpi/tcss.asl

@@ -331,8 +331,13 @@ Scope (\_SB)
 		Name (_CRS, ResourceTemplate () {
 			Memory32Fixed (ReadWrite, IOM_BASE_ADDRESS, IOM_BASE_SIZE)
 		})
+#if CONFIG(IOM_ACPI_DEVICE_VISIBLE)
+		/* ACPI_STATUS_DEVICE_ALL_ON */
+		Name (_STA, 0xF)
+#else
 		/* ACPI_STATUS_DEVICE_HIDDEN_ON */
 		Name (_STA, 0xB)
+#endif
 	}
 }