drivers/espi: Add support for ESPI_PERIPHERAL_HOST_IO_PVT2 & PVT3

Add support the host I/O over eSPI peripheral channel for private
channel2 and channel3.

The default port number of ESPI_PERIPHERAL_HOST_IO_PVT2_PORT_NUM and
ESPI_PERIPHERAL_HOST_IO_PVT3_PORT_NUM are 0x68 and 0x70.

Signed-off-by: Tim Lin <[email protected]>

Author: GTLin08

drivers/espi/Kconfig

@@ -112,6 +112,16 @@ config ESPI_PERIPHERAL_HOST_IO_PVT
 	help
 	  Enables ACPI Host I/O over eSPI peripheral channel for private channel.
 
+config ESPI_PERIPHERAL_HOST_IO_PVT2
+	bool "Host I/O peripheral Private Channel 2"
+	help
+	  Enables ACPI Host I/O over eSPI peripheral channel for private channel 2.
+
+config ESPI_PERIPHERAL_HOST_IO_PVT3
+	bool "Host I/O peripheral Private Channel 3"
+	help
+	  Enables ACPI Host I/O over eSPI peripheral channel for private channel 3.
+
 config ESPI_PERIPHERAL_HOST_IO_PVT_PORT_NUM
 	hex "Host I/O peripheral Private Channel"
 	depends on ESPI_PERIPHERAL_HOST_IO_PVT
@@ -122,6 +132,22 @@ config ESPI_PERIPHERAL_HOST_IO_PVT_PORT_NUM
 	  the same port. Also, ensure the port number selected doesn't clash
 	  with the existing ports (like 80, 92, 62 etc).
 
+config ESPI_PERIPHERAL_HOST_IO_PVT2_PORT_NUM
+	hex "Host I/O peripheral Private Channel 2"
+	depends on ESPI_PERIPHERAL_HOST_IO_PVT2
+	default 0x0068
+	help
+	  This is the port number used by the Host and EC to communicate over
+	  the private channel 2.
+
+config ESPI_PERIPHERAL_HOST_IO_PVT3_PORT_NUM
+	hex "Host I/O peripheral Private Channel 3"
+	depends on ESPI_PERIPHERAL_HOST_IO_PVT3
+	default 0x0070
+	help
+	  This is the port number used by the Host and EC to communicate over
+	  the private channel 3.
+
 config ESPI_PERIPHERAL_DEBUG_PORT_80
 	bool "Debug Port 80 peripheral"
 	help

include/zephyr/drivers/espi.h

@@ -196,6 +196,8 @@ enum espi_virtual_peripheral {
 	ESPI_PERIPHERAL_HOST_IO,
 	ESPI_PERIPHERAL_DEBUG_PORT80,
 	ESPI_PERIPHERAL_HOST_IO_PVT,
+	ESPI_PERIPHERAL_HOST_IO_PVT2,
+	ESPI_PERIPHERAL_HOST_IO_PVT3,
 #if defined(CONFIG_ESPI_PERIPHERAL_EC_HOST_CMD)
 	ESPI_PERIPHERAL_EC_HOST_CMD,
 #endif /* CONFIG_ESPI_PERIPHERAL_EC_HOST_CMD */