feat: M3 complete — WiFi, BT keyboard and mouse

Bluetooth (RTL8723D USB combo chip):
- GPIO pin 357 (active low) enables WiFi/BT hardware via x6200_gpio_set()
- bluez5_utils 5.64 (downgraded from 5.79 — HID input plugin broken in 5.79)
- rtl8723d_config.bin added to overlay (missing from linux-firmware package)
- S45wifi-bt: GPIO enable + modprobe btusb/uhid/hidp at boot
- S85bt-keyboard: auto-connect loop with scan+connect every 20s

WiFi (RTL8723DU):
- out-of-tree lwfinger/rtw88 driver (RTW88_8723DU not in kernel 6.1 mainline)
- linux-firmware RTL_RTW88 for rtw88/rtw8723d_fw.bin
- regulatory.db for cfg80211
- wpa_supplicant with multi-network config in /etc/wpa_supplicant.conf
- S46wifi: wpa_supplicant + udhcpc at boot

Key findings:
- RTL8723D USB WiFi (0bda:d723) requires out-of-tree rtw88 on kernel 6.1
- BT and WiFi share same USB device, both need GPIO 357 = 0 to power on
- bluez5 5.79 HID input plugin not linked into bluetoothd (build system bug)

br2_external/Config.in

@@ -1,5 +1,6 @@
 menu "Mestre"
 
 source "$BR2_EXTERNAL_MESTRE_PATH/package/x6200-control/Config.in"
+source "$BR2_EXTERNAL_MESTRE_PATH/package/rtw88/Config.in"
 
 endmenu

br2_external/board/x6200/linux/linux-midi.fragment

@@ -35,3 +35,8 @@ CONFIG_SND_DUMMY=m
 # Expose kernel config via /proc/config.gz (useful for debugging)
 CONFIG_IKCONFIG=y
 CONFIG_IKCONFIG_PROC=y
+
+# HID via userspace (required for Bluetooth HID devices)
+CONFIG_UHID=y
+CONFIG_INPUT_UINPUT=y
+

br2_external/board/x6200/linux/linux.config

@@ -56,11 +56,13 @@ CONFIG_NET_IPIP=y
 # CONFIG_INET_DIAG is not set
 # CONFIG_IPV6 is not set
 CONFIG_CAN=y
-CONFIG_BT=m
-CONFIG_BT_RFCOMM=m
-CONFIG_BT_BNEP=m
-CONFIG_BT_HIDP=m
-CONFIG_BT_HCIBTUSB=m
+CONFIG_BT=y
+CONFIG_BT_RFCOMM=y
+CONFIG_BT_BNEP=y
+CONFIG_BT_HIDP=y
+CONFIG_BT_HCIBTUSB=y
+CONFIG_UHID=y
+CONFIG_HIDRAW=y
 CONFIG_CFG80211=m
 CONFIG_CFG80211_DEVELOPER_WARNINGS=y
 CONFIG_CFG80211_CERTIFICATION_ONUS=y

br2_external/board/x6200/rootfs-overlay/etc/X11/xorg.conf.d/10-rotate.conf

@@ -0,0 +1,5 @@
+Section "Device"
+    Identifier "LCD"
+    Driver "fbdev"
+    Option "Rotate" "CCW"
+EndSection

br2_external/board/x6200/rootfs-overlay/etc/init.d/S35wifi-bt

@@ -0,0 +1,45 @@
+#!/bin/sh
+# S45wifi-bt — aktiverar WiFi/BT-chipet (RTL8723D) via GPIO
+#
+# X6200:s WiFi/BT-chip är avstängt vid boot och måste aktiveras
+# via GPIO pin 357 (active low) innan kernel-drivern kan använda det.
+#
+# Måste köras innan S40bluetoothd startar.
+
+case "$1" in
+    start)
+        echo "Starting WiFi/BT hardware"
+        python3 - << 'PYEOF'
+import ctypes
+lib = ctypes.CDLL("libaether_x6200_control.so")
+lib.x6200_gpio_init.restype = ctypes.c_bool
+lib.x6200_gpio_set.argtypes = [ctypes.c_int, ctypes.c_int]
+lib.x6200_gpio_init()
+lib.x6200_gpio_set(357, 0)   # active low — 0 = ON
+PYEOF
+        sleep 1
+        modprobe btusb
+        modprobe uhid
+        modprobe hidp
+        sleep 3
+        echo "OK"
+        ;;
+    stop)
+        python3 - << 'PYEOF'
+import ctypes
+lib = ctypes.CDLL("libaether_x6200_control.so")
+lib.x6200_gpio_init.restype = ctypes.c_bool
+lib.x6200_gpio_set.argtypes = [ctypes.c_int, ctypes.c_int]
+lib.x6200_gpio_init()
+lib.x6200_gpio_set(357, 1)   # 1 = OFF
+PYEOF
+        echo "WiFi/BT hardware stopped"
+        ;;
+    restart)
+        $0 stop; sleep 1; $0 start
+        ;;
+    *)
+        echo "Usage: $0 {start|stop|restart}" >&2
+        exit 1
+        ;;
+esac

br2_external/board/x6200/rootfs-overlay/etc/init.d/S46wifi

@@ -0,0 +1,44 @@
+#!/bin/sh
+# S46wifi — ansluter till WiFi via wpa_supplicant
+#
+# Körs efter S45wifi-bt (GPIO aktivering av chipet).
+# Använder /etc/wpa_supplicant.conf för nätverkslista.
+
+IFACE="wlan0"
+PIDFILE="/var/run/wpa_supplicant.pid"
+LOG="/var/log/wifi.log"
+
+case "$1" in
+    start)
+        echo "Starting WiFi"
+        ip link set "$IFACE" up
+        sleep 2
+
+        wpa_supplicant -B \
+            -i "$IFACE" \
+            -c /etc/wpa_supplicant.conf \
+            -P "$PIDFILE" \
+            >> "$LOG" 2>&1
+
+        # Hämta IP via DHCP
+        sleep 3
+        dhclient "$IFACE" >> "$LOG" 2>&1 || \
+        udhcpc -i "$IFACE" -b -p /var/run/udhcpc.pid >> "$LOG" 2>&1
+
+        echo "OK"
+        ;;
+    stop)
+        echo "Stopping WiFi"
+        [ -f "$PIDFILE" ] && kill $(cat "$PIDFILE") 2>/dev/null
+        rm -f "$PIDFILE"
+        ip link set "$IFACE" down
+        echo "OK"
+        ;;
+    restart)
+        $0 stop; sleep 1; $0 start
+        ;;
+    *)
+        echo "Usage: $0 {start|stop|restart}" >&2
+        exit 1
+        ;;
+esac

br2_external/board/x6200/rootfs-overlay/etc/init.d/S85bt-keyboard

@@ -0,0 +1,58 @@
+#!/bin/sh
+# S85bt-keyboard — auto-connect Linocell BTK16 BT-tangentbord
+#
+# Försöker ansluta tangentbordet vid boot och startar en bakgrundsprocess
+# som reconnectar automatiskt när tangentbordet kommer inom räckhåll.
+#
+# Tangentbordet måste vara parat och trustat sedan tidigare.
+# Para manuellt med: bluetoothctl pair ED:96:00:23:E2:02
+#                    bluetoothctl trust ED:96:00:23:E2:02
+
+KEYBOARD_ADDR="ED:96:00:23:E2:02"
+PIDFILE="/var/run/bt-keyboard.pid"
+LOG="/var/log/bt-keyboard.log"
+
+connect_keyboard() {
+    bluetoothctl power on > /dev/null 2>&1
+    bluetoothctl connect "$KEYBOARD_ADDR" > /dev/null 2>&1
+}
+
+watch_loop() {
+    while true; do
+        # Kolla om tangentbordet är anslutet
+        if ! bluetoothctl info "$KEYBOARD_ADDR" 2>/dev/null | grep -q "Connected: yes"; then
+            connect_keyboard
+        fi
+        sleep 10
+    done
+}
+
+case "$1" in
+    start)
+        echo "Starting BT keyboard auto-connect"
+
+        # Försök första anslutning i bakgrunden (tangentbordet kanske inte är i närheten)
+        (sleep 5 && connect_keyboard) &
+
+        # Starta watch-loop som reconnectar när tgb dyker upp
+        watch_loop >> "$LOG" 2>&1 &
+        echo $! > "$PIDFILE"
+        echo "OK"
+        ;;
+    stop)
+        echo "Stopping BT keyboard auto-connect"
+        if [ -f "$PIDFILE" ]; then
+            kill $(cat "$PIDFILE") 2>/dev/null
+            rm -f "$PIDFILE"
+        fi
+        bluetoothctl disconnect "$KEYBOARD_ADDR" > /dev/null 2>&1
+        echo "OK"
+        ;;
+    restart)
+        $0 stop; sleep 1; $0 start
+        ;;
+    *)
+        echo "Usage: $0 {start|stop|restart}" >&2
+        exit 1
+        ;;
+esac

br2_external/board/x6200/rootfs-overlay/etc/ssh/sshd_config

@@ -0,0 +1,116 @@
+#	$OpenBSD: sshd_config,v 1.104 2021/07/02 05:11:21 dtucker Exp $
+
+# This is the sshd server system-wide configuration file.  See
+# sshd_config(5) for more information.
+
+# This sshd was compiled with PATH=/bin:/sbin:/usr/bin:/usr/sbin
+
+# The strategy used for options in the default sshd_config shipped with
+# OpenSSH is to specify options with their default value where
+# possible, but leave them commented.  Uncommented options override the
+# default value.
+
+#Port 22
+#AddressFamily any
+#ListenAddress 0.0.0.0
+#ListenAddress ::
+
+#HostKey /etc/ssh/ssh_host_rsa_key
+#HostKey /etc/ssh/ssh_host_ecdsa_key
+#HostKey /etc/ssh/ssh_host_ed25519_key
+
+# Ciphers and keying
+#RekeyLimit default none
+
+# Logging
+#SyslogFacility AUTH
+#LogLevel INFO
+
+# Authentication:
+
+#LoginGraceTime 2m
+PermitRootLogin yes
+#StrictModes yes
+#MaxAuthTries 6
+#MaxSessions 10
+
+#PubkeyAuthentication yes
+
+# The default is to check both .ssh/authorized_keys and .ssh/authorized_keys2
+# but this is overridden so installations will only check .ssh/authorized_keys
+AuthorizedKeysFile	.ssh/authorized_keys
+
+#AuthorizedPrincipalsFile none
+
+#AuthorizedKeysCommand none
+#AuthorizedKeysCommandUser nobody
+
+# For this to work you will also need host keys in /etc/ssh/ssh_known_hosts
+#HostbasedAuthentication no
+# Change to yes if you don't trust ~/.ssh/known_hosts for
+# HostbasedAuthentication
+#IgnoreUserKnownHosts no
+# Don't read the user's ~/.rhosts and ~/.shosts files
+#IgnoreRhosts yes
+
+# To disable tunneled clear text passwords, change to no here!
+#PasswordAuthentication yes
+#PermitEmptyPasswords no
+
+# Change to no to disable s/key passwords
+#KbdInteractiveAuthentication yes
+
+# Kerberos options
+#KerberosAuthentication no
+#KerberosOrLocalPasswd yes
+#KerberosTicketCleanup yes
+#KerberosGetAFSToken no
+
+# GSSAPI options
+#GSSAPIAuthentication no
+#GSSAPICleanupCredentials yes
+
+# Set this to 'yes' to enable PAM authentication, account processing,
+# and session processing. If this is enabled, PAM authentication will
+# be allowed through the KbdInteractiveAuthentication and
+# PasswordAuthentication.  Depending on your PAM configuration,
+# PAM authentication via KbdInteractiveAuthentication may bypass
+# the setting of "PermitRootLogin prohibit-password".
+# If you just want the PAM account and session checks to run without
+# PAM authentication, then enable this but set PasswordAuthentication
+# and KbdInteractiveAuthentication to 'no'.
+#UsePAM no
+
+#AllowAgentForwarding yes
+#AllowTcpForwarding yes
+#GatewayPorts no
+#X11Forwarding no
+#X11DisplayOffset 10
+#X11UseLocalhost yes
+#PermitTTY yes
+#PrintMotd yes
+#PrintLastLog yes
+#TCPKeepAlive yes
+#PermitUserEnvironment no
+#Compression delayed
+#ClientAliveInterval 0
+#ClientAliveCountMax 3
+#UseDNS no
+#PidFile /var/run/sshd.pid
+#MaxStartups 10:30:100
+#PermitTunnel no
+#ChrootDirectory none
+#VersionAddendum none
+
+# no default banner path
+#Banner none
+
+# override default of no subsystems
+Subsystem	sftp	/usr/libexec/sftp-server
+
+# Example of overriding settings on a per-user basis
+#Match User anoncvs
+#	X11Forwarding no
+#	AllowTcpForwarding no
+#	PermitTTY no
+#	ForceCommand cvs server

br2_external/board/x6200/rootfs-overlay/etc/wpa_supplicant.conf.exampel

@@ -0,0 +1,16 @@
+ctrl_interface=/var/run/wpa_supplicant
+update_config=1
+country=SE
+
+# Lägg till dina nätverk här:
+network={
+    ssid="Ditt_natverk_1"
+    psk="ditt_losenord_1"
+    priority=10
+}
+
+network={
+    ssid="Ditt_natverk_2"
+    psk="ditt_losenord_2"
+    priority=5
+}

br2_external/board/x6200/rootfs-overlay/root/.ssh/authorized_keys

@@ -0,0 +1 @@
+ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIBaWQsEKvTUbfTSKEa9sEuu7LpJm9Z07eSluIQV7+AxA joakim@cameron

br2_external/configs/mestre_x6200_defconfig

@@ -126,7 +126,17 @@ BR2_PACKAGE_STRACE=y
 #   - Network Manager (using simple /etc/network/interfaces for now)
 # ---------------------------------------------------------------------------
 
+BR2_GLOBAL_PATCH_DIR="../br2_external/board/x6200/patches"
 
+# x6200
+BR2_PACKAGE_X6200_CONTROL=y
+
+# MISC
+BR2_PACKAGE_PYTHON3=y
+BR2_PACKAGE_PYTHON3_CTYPES=y
+BR_PACKAGE_JOE=y
+
+# Audio
 BR2_PACKAGE_ALSA_UTILS=y
 BR2_PACKAGE_ALSA_UTILS_APLAY=y
 BR2_PACKAGE_ALSA_UTILS_AMIXER=y
@@ -135,12 +145,47 @@ BR2_PACKAGE_ALSA_LIB=y
 BR2_PACKAGE_ALSA_LIB_MIXER=y
 BR2_PACKAGE_ALSA_LIB_PCM=y
 BR2_PACKAGE_ALSA_LIB_RAWMIDI=y
-BR2_PACKAGE_X6200_CONTROL=y
-BR2_PACKAGE_PYTHON3=y
-BR2_PACKAGE_PYTHON3_CTYPES=y
 BR2_PACKAGE_PULSEAUDIO=y
 BR2_PACKAGE_PULSEAUDIO_DAEMON=y
 BR2_PACKAGE_PULSEAUDIO_MODULE_ALSA=y
 BR2_PACKAGE_PULSEAUDIO=y
 BR2_PACKAGE_PULSEAUDIO_DAEMON=y
 BR2_PACKAGE_PULSEAUDIO_MODULE_ALSA=y
+
+# X11
+BR2_PACKAGE_XORG7=y
+BR2_PACKAGE_XSERVER_XORG_SERVER=y
+BR2_PACKAGE_XAPP_XINIT=y
+BR2_PACKAGE_XDRIVER_XF86_VIDEO_FBDEV=y
+BR2_PACKAGE_XDRIVER_XF86_INPUT_LIBINPUT=y
+BR2_PACKAGE_XKEYBOARD_CONFIG=y
+BR2_PACKAGE_LIBINPUT=y
+BR2_PACKAGE_XTERM=y
+
+# GTK3
+BR2_PACKAGE_LIBGTK3=y
+BR2_PACKAGE_LIBGTK3_X11=y
+BR2_PACKAGE_LIBEPOXY=y
+
+# BT TGB MOUSE & WIFI
+BR2_PACKAGE_LINUX_FIRMWARE=y
+BR2_PACKAGE_LINUX_FIRMWARE_RTL_87XX=y
+BR2_PACKAGE_LINUX_FIRMWARE_RTL_87XX_BT=y
+BR2_PACKAGE_BLUEZ5_UTILS=y
+BR2_PACKAGE_BLUEZ5_UTILS_CLIENT=y
+BR2_PACKAGE_BLUEZ5_UTILS_DEPRECATED=y
+BR2_PACKAGE_BLUEZ5_UTILS_TOOLS=y
+BR2_PACKAGE_BLUEZ5_UTILS_PLUGINS_HID=y
+BR2_PACKAGE_BLUEZ5_UTILS_TOOLS_HID2HCI=y
+BR2_PACKAGE_EUDEV=y
+BR2_PACKAGE_XKEYBOARD_CONFIG=y
+BR2_PACKAGE_XINPUT=y
+BR2_PACKAGE_XAPP_XRANDR=y
+BR2_PACKAGE_LINUX_FIRMWARE_RTL_RTW88=y
+BR2_PACKAGE_RTW88=y
+BR2_PACKAGE_LINUX_FIRMWARE_REGULATORY=y
+BR2_PACKAGE_WPA_SUPPLICANT=y
+BR2_PACKAGE_WPA_SUPPLICANT_PASSPHRASE=y
+BR2_PACKAGE_WPA_SUPPLICANT_CTRL_IFACE=y
+BR2_PACKAGE_DHCP=y
+BR2_PACKAGE_DHCP_CLIENT=y

br2_external/package/rtw88/Config.in

@@ -0,0 +1,8 @@
+config BR2_PACKAGE_RTW88
+	bool "rtw88 out-of-tree WiFi driver"
+	depends on BR2_LINUX_KERNEL
+	help
+	  Out-of-tree Realtek rtw88 driver from lwfinger/rtw88.
+	  Adds RTL8723DU USB WiFi support not available in kernel 6.1.
+
+	  https://github.com/lwfinger/rtw88

br2_external/package/rtw88/rtw88.mk

@@ -0,0 +1,16 @@
+################################################################################
+#
+# rtw88 — out-of-tree Realtek WiFi driver
+# Includes RTL8723DU USB support not yet in kernel 6.1 mainline.
+# Based on gdyuldin/AetherX6200Buildroot's recipe.
+#
+################################################################################
+
+RTW88_VERSION = 461b696b51317ba4ca585a4ddb32f2e72cd4efc9
+RTW88_SITE = https://github.com/lwfinger/rtw88
+RTW88_SITE_METHOD = git
+RTW88_LICENSE = GPL-2.0
+RTW88_INSTALL_STAGING = YES
+
+$(eval $(kernel-module))
+$(eval $(generic-package))