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>

diff --git a/arch/x86/include/asm/arch-apollolake/gpe.h b/arch/x86/include/asm/arch-apollolake/gpe.h
new file mode 100644 (file)
index 0000000..f579296
--- /dev/null
+++ b/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

diff --git a/arch/x86/include/asm/arch-apollolake/gpio.h b/arch/x86/include/asm/arch-apollolake/gpio.h
index 10879c1..ab5860c 100644 (file)
--- a/arch/x86/include/asm/arch-apollolake/gpio.h
+++ b/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_ */

diff --git a/doc/device-tree-bindings/device.txt b/doc/device-tree-bindings/device.txt
index 2a5736c..73ce2a3 100644 (file)
--- a/doc/device-tree-bindings/device.txt
+++ b/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>;
        };
 };