x86: Add wake sources for the acpi_gpe driver

Some devices can wake the system from sleep, e.g opening the lid on a
clamshell or moving a USB mouse.

Add a wake to specify this for USB devices and add the settings for Apollo
Lake.

Signed-off-by: Simon Glass <sjg@chromium.org>

arch/x86/include/asm/arch-apollolake/gpe.h

@@ -0,0 +1,135 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright 2016 Intel Corporation
+ * Copyright 2020 Google LLC
+ *
+ * Taken from coreboot apl gpe.h
+ */
+
+#ifndef _ASM_ARCH_GPE_H_
+#define _ASM_ARCH_GPE_H_
+
+/* bit position in GPE0a_STS register */
+#define GPE0A_PCIE_SCI_STS		0
+#define GPE0A_SWGPE_STS			2
+#define GPE0A_PCIE_WAKE0_STS		3
+#define GPE0A_PUNIT_SCI_STS		4
+#define GPE0A_PCIE_WAKE1_STS		6
+#define GPE0A_PCIE_WAKE2_STS		7
+#define GPE0A_PCIE_WAKE3_STS		8
+#define GPE0A_PCIE_GPE_STS		9
+#define GPE0A_BATLOW_STS		10
+#define GPE0A_CSE_PME_STS		11
+#define GPE0A_XDCI_PME_STS		12
+#define GPE0A_XHCI_PME_STS		13
+#define GPE0A_AVS_PME_STS		14
+#define GPE0A_GPIO_TIER1_SCI_STS	15
+#define GPE0A_SMB_WAK_STS		16
+#define GPE0A_SATA_PME_STS		17
+#define GPE0A_CNVI_PME_STS	        18
+
+/* Group DW0 is reserved in Apollolake */
+
+/* GPE_63_32 */
+#define GPE0_DW1_00		32
+#define GPE0_DW1_01		33
+#define GPE0_DW1_02		34
+#define GPE0_DW1_03		36
+#define GPE0_DW1_04		36
+#define GPE0_DW1_05		37
+#define GPE0_DW1_06		38
+#define GPE0_DW1_07		39
+#define GPE0_DW1_08		40
+#define GPE0_DW1_09		41
+#define GPE0_DW1_10		42
+#define GPE0_DW1_11		43
+#define GPE0_DW1_12		44
+#define GPE0_DW1_13		45
+#define GPE0_DW1_14		46
+#define GPE0_DW1_15		47
+#define GPE0_DW1_16		48
+#define GPE0_DW1_17		49
+#define GPE0_DW1_18		50
+#define GPE0_DW1_19		51
+#define GPE0_DW1_20		52
+#define GPE0_DW1_21		53
+#define GPE0_DW1_22		54
+#define GPE0_DW1_23		55
+#define GPE0_DW1_24		56
+#define GPE0_DW1_25		57
+#define GPE0_DW1_26		58
+#define GPE0_DW1_27		59
+#define GPE0_DW1_28		60
+#define GPE0_DW1_29		61
+#define GPE0_DW1_30		62
+#define GPE0_DW1_31		63
+/* GPE_95_64 */
+#define GPE0_DW2_00		64
+#define GPE0_DW2_01		65
+#define GPE0_DW2_02		66
+#define GPE0_DW2_03		67
+#define GPE0_DW2_04		68
+#define GPE0_DW2_05		69
+#define GPE0_DW2_06		70
+#define GPE0_DW2_07		71
+#define GPE0_DW2_08		72
+#define GPE0_DW2_09		73
+#define GPE0_DW2_10		74
+#define GPE0_DW2_11		75
+#define GPE0_DW2_12		76
+#define GPE0_DW2_13		77
+#define GPE0_DW2_14		78
+#define GPE0_DW2_15		79
+#define GPE0_DW2_16		80
+#define GPE0_DW2_17		81
+#define GPE0_DW2_18		82
+#define GPE0_DW2_19		83
+#define GPE0_DW2_20		84
+#define GPE0_DW2_21		85
+#define GPE0_DW2_22		86
+#define GPE0_DW2_23		87
+#define GPE0_DW2_24		88
+#define GPE0_DW2_25		89
+#define GPE0_DW2_26		90
+#define GPE0_DW2_27		91
+#define GPE0_DW2_28		92
+#define GPE0_DW2_29		93
+#define GPE0_DW2_30		94
+#define GPE0_DW2_31		95
+/* GPE_127_96 */
+#define GPE0_DW3_00		96
+#define GPE0_DW3_01		97
+#define GPE0_DW3_02		98
+#define GPE0_DW3_03		99
+#define GPE0_DW3_04		100
+#define GPE0_DW3_05		101
+#define GPE0_DW3_06		102
+#define GPE0_DW3_07		103
+#define GPE0_DW3_08		104
+#define GPE0_DW3_09		105
+#define GPE0_DW3_10		106
+#define GPE0_DW3_11		107
+#define GPE0_DW3_12		108
+#define GPE0_DW3_13		109
+#define GPE0_DW3_14		110
+#define GPE0_DW3_15		111
+#define GPE0_DW3_16		112
+#define GPE0_DW3_17		113
+#define GPE0_DW3_18		114
+#define GPE0_DW3_19		115
+#define GPE0_DW3_20		116
+#define GPE0_DW3_21		117
+#define GPE0_DW3_22		118
+#define GPE0_DW3_23		119
+#define GPE0_DW3_24		120
+#define GPE0_DW3_25		121
+#define GPE0_DW3_26		122
+#define GPE0_DW3_27		123
+#define GPE0_DW3_28		124
+#define GPE0_DW3_29		125
+#define GPE0_DW3_30		126
+#define GPE0_DW3_31		127
+
+#define GPE_MAX			GPE0_DW3_31
+
+#endif

arch/x86/include/asm/arch-apollolake/gpio.h

@@ -482,4 +482,7 @@
 #define GPIO_72_IRQ			0x65
 #define GPIO_73_IRQ			0x66
 
+/* This is needed by ACPI */
+#define GPIO_NUM_PAD_CFG_REGS   2 /* DW0, DW1 */
+
 #endif /* _ASM_ARCH_GPIO_H_ */

doc/device-tree-bindings/device.txt

@@ -22,6 +22,8 @@ the acpi,compatible property.
  - acpi,name : Provides the ACPI name for a device, which is a string consisting
    of four alphanumeric character (upper case)
  - acpi,uid : _UID value for device
+ - acpi,wake : Provides the GPE used to detect a request from a device to wake
+   from sleep
  - linux,probed : Tells U-Boot to add 'linux,probed' to the ACPI tables so that
     Linux will only load the driver if the device can be detected (e.g. on I2C
     bus). Note that this is an out-of-tree Linux feature.
@@ -46,6 +48,7 @@ pcie-a0@14,0 {
 		compatible = "intel,generic-wifi";
 		acpi,ddn = "Intel WiFi";
 		acpi,name = "WF00";
+		acpi,wake = <GPE0_DW3_00>;
 		interrupts-extended = <&acpi_gpe 0x3c 0>;
 	};
 };