board/aarch64/r2s: add support for reset button

This patch further cleans up the r2s kernel config and also enables the
input event framework for the gpio0 reset button on the device.

The very simple input-event-daemon is introduced, with the only purpose
of listening to /dev/input/event1 for KEY_RESTART and trigger reboot.

Some helpful tooling is also added to help debug events (evtest).

Issue #276

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>

board/aarch64/r2s/linux_defconfig

@@ -36,9 +36,7 @@ CONFIG_EXPERT=y
 CONFIG_KALLSYMS_ALL=y
 CONFIG_PROFILING=y
 CONFIG_KEXEC_FILE=y
-CONFIG_ARCH_ACTIONS=y
 CONFIG_ARCH_ROCKCHIP=y
-CONFIG_ARCH_VEXPRESS=y
 CONFIG_ARM64_VA_BITS_48=y
 CONFIG_SCHED_MC=y
 CONFIG_SCHED_SMT=y
@@ -218,7 +216,6 @@ CONFIG_NET_MPLS_GSO=y
 CONFIG_MPLS_ROUTING=m
 CONFIG_NET_PKTGEN=y
 CONFIG_BT=m
-CONFIG_BT_HIDP=m
 # CONFIG_BT_LE is not set
 CONFIG_BT_LEDS=y
 # CONFIG_BT_DEBUGFS is not set
@@ -249,6 +246,7 @@ CONFIG_PCI_EPF_TEST=m
 CONFIG_DEVTMPFS=y
 CONFIG_DEVTMPFS_MOUNT=y
 CONFIG_FW_LOADER_USER_HELPER=y
+CONFIG_VEXPRESS_CONFIG=y
 CONFIG_ARM_SCMI_PROTOCOL=y
 CONFIG_ARM_SCPI_PROTOCOL=y
 CONFIG_EFI_CAPSULE_LOADER=y
@@ -315,7 +313,6 @@ CONFIG_VIRTIO_NET=y
 CONFIG_NLMON=y
 CONFIG_NET_VRF=y
 # CONFIG_NET_VENDOR_3COM is not set
-# CONFIG_NET_VENDOR_ACTIONS is not set
 # CONFIG_NET_VENDOR_ADAPTEC is not set
 # CONFIG_NET_VENDOR_AGERE is not set
 # CONFIG_NET_VENDOR_ALACRITECH is not set
@@ -453,7 +450,10 @@ CONFIG_RTW89_DEBUGMSG=y
 # CONFIG_WLAN_VENDOR_ZYDAS is not set
 # CONFIG_WLAN_VENDOR_QUANTENNA is not set
 CONFIG_INPUT_FF_MEMLESS=y
-# CONFIG_INPUT_KEYBOARD is not set
+CONFIG_INPUT_EVDEV=y
+CONFIG_INPUT_EVBUG=y
+CONFIG_KEYBOARD_GPIO=y
+CONFIG_KEYBOARD_GPIO_POLLED=y
 # CONFIG_INPUT_MOUSE is not set
 CONFIG_INPUT_MISC=y
 CONFIG_INPUT_RK805_PWRKEY=y
@@ -500,20 +500,17 @@ CONFIG_PPS=y
 CONFIG_DEBUG_PINCTRL=y
 CONFIG_PINCTRL_RK805=y
 CONFIG_PINCTRL_SINGLE=y
+CONFIG_GPIO_SYSFS=y
+CONFIG_GPIO_GENERIC_PLATFORM=y
 CONFIG_GPIO_MAX732X=y
 CONFIG_GPIO_PCA953X=y
 CONFIG_GPIO_PCA953X_IRQ=y
-CONFIG_POWER_RESET_XGENE=y
+CONFIG_POWER_RESET_GPIO_RESTART=y
 CONFIG_POWER_RESET_SYSCON=y
 CONFIG_SYSCON_REBOOT_MODE=y
-CONFIG_BATTERY_SBS=m
-CONFIG_BATTERY_BQ27XXX=y
-CONFIG_BATTERY_MAX17042=m
-CONFIG_CHARGER_BQ25890=m
-CONFIG_CHARGER_BQ25980=m
+CONFIG_CHARGER_RK817=y
 CONFIG_SENSORS_ARM_SCMI=y
 CONFIG_SENSORS_ARM_SCPI=y
-CONFIG_SENSORS_LM90=m
 CONFIG_SENSORS_PWM_FAN=m
 CONFIG_CPU_THERMAL=y
 CONFIG_THERMAL_EMULATION=y
@@ -523,16 +520,17 @@ CONFIG_WATCHDOG_SYSFS=y
 CONFIG_SOFT_WATCHDOG=y
 CONFIG_MFD_RK8XX_I2C=y
 CONFIG_MFD_RK8XX_SPI=y
-CONFIG_MFD_STMFX=y
+# CONFIG_MFD_VEXPRESS_SYSREG is not set
+CONFIG_REGULATOR=y
 CONFIG_REGULATOR_DEBUG=y
 CONFIG_REGULATOR_FIXED_VOLTAGE=y
+CONFIG_REGULATOR_USERSPACE_CONSUMER=y
+CONFIG_REGULATOR_NETLINK_EVENTS=y
 CONFIG_REGULATOR_GPIO=y
 CONFIG_REGULATOR_PWM=y
 CONFIG_REGULATOR_RK808=y
 CONFIG_REGULATOR_VCTRL=y
-CONFIG_REGULATOR_VEXPRESS=m
-# CONFIG_HID_GENERIC is not set
-# CONFIG_USB_HID is not set
+# CONFIG_HID_SUPPORT is not set
 CONFIG_USB_ULPI_BUS=y
 CONFIG_USB_CONN_GPIO=y
 CONFIG_USB=y
@@ -584,12 +582,9 @@ CONFIG_MMC_SDHCI_CADENCE=y
 CONFIG_MMC_SDHCI_F_SDH30=y
 CONFIG_MMC_SPI=y
 CONFIG_MMC_DW=y
-CONFIG_MMC_DW_EXYNOS=y
 CONFIG_MMC_DW_HI3798CV200=y
 CONFIG_MMC_DW_K3=y
 CONFIG_MMC_DW_ROCKCHIP=y
-CONFIG_MMC_MTK=y
-CONFIG_MMC_SDHCI_XENON=y
 CONFIG_SCSI_UFSHCD=y
 CONFIG_SCSI_UFSHCD_PLATFORM=y
 CONFIG_NEW_LEDS=y
@@ -643,7 +638,6 @@ CONFIG_ROCKCHIP_IODOMAIN=y
 CONFIG_ROCKCHIP_DTPM=m
 CONFIG_ROCKCHIP_PM_DOMAINS=y
 CONFIG_DEVFREQ_GOV_USERSPACE=m
-CONFIG_EXTCON_PTN5150=m
 CONFIG_EXTCON_USB_GPIO=y
 CONFIG_MEMORY=y
 CONFIG_IIO=y
@@ -656,6 +650,7 @@ CONFIG_IIO_ST_MAGN_3AXIS=m
 CONFIG_MPL3115=m
 CONFIG_PWM=y
 CONFIG_PWM_ROCKCHIP=y
+CONFIG_RESET_GPIO=y
 CONFIG_PHY_ROCKCHIP_DPHY_RX0=m
 CONFIG_PHY_ROCKCHIP_EMMC=y
 CONFIG_PHY_ROCKCHIP_INNO_HDMI=m

board/aarch64/r2s/rootfs/etc/finit.d/enabled/input-event-daemon.conf

@@ -0,0 +1 @@
+../available/input-event-daemon.conf

board/aarch64/r2s/rootfs/etc/input-event-daemon.conf

@@ -0,0 +1,5 @@
+[Global]
+listen = /dev/input/event1
+
+[Keys]
+RESTART = reboot

configs/r2s_defconfig

@@ -58,8 +58,11 @@ BR2_PACKAGE_DBUS_GLIB=y
 BR2_PACKAGE_DBUS_TRIGGERD=y
 BR2_PACKAGE_EUDEV_RULES_GEN=y
 # BR2_PACKAGE_EUDEV_ENABLE_HWDB is not set
+BR2_PACKAGE_EVEMU=y
+BR2_PACKAGE_EVTEST=y
 BR2_PACKAGE_GPTFDISK=y
 BR2_PACKAGE_GPTFDISK_SGDISK=y
+BR2_PACKAGE_INPUT_EVENT_DAEMON=y
 BR2_PACKAGE_MDIO_TOOLS=y
 BR2_PACKAGE_RNG_TOOLS=y
 BR2_PACKAGE_UBOOT_TOOLS_FIT_SUPPORT=y

package/skeleton-init-finit/skeleton/etc/finit.d/available/input-event-daemon.conf

@@ -0,0 +1 @@
+service [12345789] name:eventd input-event-daemon -D -- Input event daemon