soc/intel/alderlake: Add GPIOs for Alder Lake SOC

Add definitions for the GPIO pins on Alder Lake LP,
as well as GPIO IRQ routing information and supporting ACPI ASL.

For now, add the following 5 GPIO communities and 13 GPIO groups:

Comm. 0: GPP_B, GPP_T, GPP_A
Comm. 1: GPP_S, GPP_H, GPP_D
Comm. 2: GPD
Comm. 4: GPP_C, GPP_F, GPP_E, GPP_HVMOS
Comm. 5: GPP_R, GPP_SPI0

Change-Id: I77b9dcc46aceaf530e2054c9cacd7b026ebbb96b
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45571
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>

1 files changed, 171 insertions, 0 deletions

diff --git a/src/soc/intel/alderlake/acpi/gpio.asl b/src/soc/intel/alderlake/acpi/gpio.asl
new file mode 100644
index 0000000000..e21f6d5481
--- /dev/null
+++ b/src/soc/intel/alderlake/acpi/gpio.asl
@@ -0,0 +1,171 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#include <intelblocks/gpio.h>
+#include <soc/gpio_defs.h>
+#include <soc/intel/common/acpi/gpio.asl>
+#include <soc/intel/common/block/acpi/acpi/gpio_op.asl>
+#include <soc/irq.h>
+#include <soc/pcr_ids.h>
+
+Device (GPIO)
+{
+	Name (_HID, CROS_GPIO_NAME)
+	Name (_UID, 0)
+	Name (_DDN, "GPIO Controller")
+
+	Name (RBUF, ResourceTemplate()
+	{
+		Memory32Fixed (ReadWrite, 0, 0, COM0)
+		Memory32Fixed (ReadWrite, 0, 0, COM1)
+		Memory32Fixed (ReadWrite, 0, 0, COM4)
+		Memory32Fixed (ReadWrite, 0, 0, COM5)
+		Interrupt (ResourceConsumer, Level, ActiveLow, Shared,,, GIRQ)
+			{ GPIO_IRQ14 }
+	})
+	Method (_CRS, 0, NotSerialized)
+	{
+		/* GPIO Community 0 */
+		CreateDWordField (^RBUF, ^COM0._BAS, BAS0)
+		CreateDWordField (^RBUF, ^COM0._LEN, LEN0)
+		BAS0 = ^^PCRB (PID_GPIOCOM0)
+		LEN0 = GPIO_BASE_SIZE
+
+		/* GPIO Community 1 */
+		CreateDWordField (^RBUF, ^COM1._BAS, BAS1)
+		CreateDWordField (^RBUF, ^COM1._LEN, LEN1)
+		BAS1 = ^^PCRB (PID_GPIOCOM1)
+		LEN1 = GPIO_BASE_SIZE
+
+		/* GPIO Community 4 */
+		CreateDWordField (^RBUF, ^COM4._BAS, BAS4)
+		CreateDWordField (^RBUF, ^COM4._LEN, LEN4)
+		BAS4 = ^^PCRB (PID_GPIOCOM4)
+		LEN4 = GPIO_BASE_SIZE
+
+		/* GPIO Community 5 */
+		CreateDWordField (^RBUF, ^COM5._BAS, BAS5)
+		CreateDWordField (^RBUF, ^COM5._LEN, LEN5)
+		BAS5 = ^^PCRB (PID_GPIOCOM5)
+		LEN5 = GPIO_BASE_SIZE
+
+		Return (RBUF)
+	}
+
+	Method (_STA, 0, NotSerialized)
+	{
+		Return (0xF)
+	}
+}
+
+/*
+ * Get GPIO DW0 Address
+ * Arg0 - GPIO Number
+ */
+Method (GADD, 1, NotSerialized)
+{
+	/* GPIO Community 0 */
+	If (Arg0 >= GPIO_COM0_START && Arg0 <= GPIO_COM0_END)
+	{
+		Local0 = PID_GPIOCOM0
+		Local1 = Arg0 - GPIO_COM0_START
+	}
+	/* GPIO Community 1 */
+	If (Arg0 >= GPIO_COM1_START && Arg0 <= GPIO_COM1_END)
+	{
+		Local0 = PID_GPIOCOM1
+		Local1 = Arg0 - GPIO_COM1_START
+	}
+	/* GPIO Community 2 */
+	If (Arg0 >= GPIO_COM2_START && Arg0 <= GPIO_COM2_END)
+	{
+		Local0 = PID_GPIOCOM2
+		Local1 = Arg0 - GPIO_COM2_START
+	}
+	/* GPIO Community 4 */
+	If (Arg0 >= GPIO_COM4_START && Arg0 <= GPIO_COM4_END)
+	{
+		Local0 = PID_GPIOCOM4
+		Local1 = Arg0 - GPIO_COM4_START
+	}
+	/* GPIO Community 5*/
+	If (Arg0 >= GPIO_COM5_START && Arg0 <= GPIO_COM5_END)
+	{
+		Local0 = PID_GPIOCOM5
+		Local1 = Arg0 - GPIO_COM5_START
+	}
+
+	Local2 = PCRB(Local0) + PAD_CFG_BASE + (Local1 * 16)
+	Return (Local2)
+}
+
+/*
+ * Return PCR Port ID of GPIO Communities
+ *
+ * Arg0: GPIO Community (0-5)
+ */
+Method (GPID, 1, Serialized)
+{
+	Switch (ToInteger (Arg0))
+	{
+		Case (COMM_0) {
+			Local0 = PID_GPIOCOM0
+		}
+		Case (COMM_1) {
+			Local0 = PID_GPIOCOM1
+		}
+		Case (COMM_2) {
+			Local0 = PID_GPIOCOM2
+		}
+		Case (COMM_4) {
+			Local0 = PID_GPIOCOM4
+		}
+		Case (COMM_5) {
+			Local0 = PID_GPIOCOM5
+		}
+		Default {
+			Return (0)
+		}
+	}
+
+	Return (Local0)
+}
+
+/* GPIO Power Management bits */
+Name(GPMB, Package(TOTAL_GPIO_COMM) {0, 0, 0, 0, 0})
+
+/*
+ * Save GPIO Power Management bits
+ */
+Method (SGPM, 0, Serialized)
+{
+	For (Local0 = 0, Local0 < TOTAL_GPIO_COMM, Local0++)
+	{
+		Local1 = GPID (Local0)
+		GPMB[Local0] = PCRR (Local1, GPIO_MISCCFG)
+	}
+}
+
+/*
+ * Restore GPIO Power Management bits
+ */
+Method (RGPM, 0, Serialized)
+{
+	For (Local0 = 0, Local0 < TOTAL_GPIO_COMM, Local0++)
+	{
+		CGPM (Local0, DerefOf(GPMB[Local0]))
+	}
+}
+
+/*
+ * Save current setting of GPIO Power Management bits and
+ * enable all Power Management bits for all communities
+ */
+Method (EGPM, 0, Serialized)
+{
+	/* Save current setting and will restore it when resuming */
+	SGPM ()
+	/* Enable PM bits */
+	For (Local0 = 0, Local0 < TOTAL_GPIO_COMM, Local0++)
+	{
+		CGPM (Local0, MISCCFG_ENABLE_GPIO_PM_CONFIG)
+	}
+}