hiby: r1_patcher: add hotplug support

commit da5d6f8bf32fd9245b133f6980dbbb6c4455c197
Author: Roman Artiukhin <[email protected]>
Date:   Mon Jan 19 18:57:42 2026 +0200

    hiby: r1_patcher: add hotplug support
    
    Change-Id: I8b82842f26ac6444b32e166308b7c5deb17fab7a

diff --git a/tools/r1_patcher/r1_patcher.sh b/tools/r1_patcher/r1_patcher.sh
index 973ca28179..2daf2ac0e2 100755
--- a/tools/r1_patcher/r1_patcher.sh
+++ b/tools/r1_patcher/r1_patcher.sh
@@ -58,6 +58,45 @@ chmod 0755 "$workingdir_in/rootfs/extracted/usr/bin/bootloader.r1"
 cp hiby_player.sh $workingdir_in/rootfs/extracted/usr/bin/
 chmod 0755 $workingdir_in/rootfs/extracted/usr/bin/hiby_player.sh
 
+################################################################################
+### Rockbox Hotplug Logic
+################################################################################
+
+# 1. Create hotplug helper script
+cat << 'EOF' > $workingdir_in/rootfs/extracted/usr/bin/rb_hotplug.sh
+#!/bin/sh
+MNT_SD="/data/mnt/sd_0"
+MNT_USB="/data/mnt/usb"
+
+case "$MDEV" in
+    mmcblk*) MNT="$MNT_SD" ;;
+    sd*)     MNT="$MNT_USB" ;;
+    *)       exit 0 ;;
+esac
+
+case "$ACTION" in
+    add|"")
+        mkdir -p "$MNT"
+        mount -t auto -o flush,noatime "/dev/$MDEV" "$MNT"
+        ;;
+    remove)
+        umount -l "$MNT"
+        ;;
+esac
+EOF
+chmod 0755 $workingdir_in/rootfs/extracted/usr/bin/rb_hotplug.sh
+
+# 2. Check mdev.conf and append rules only if missing
+MDEV_CONF="$workingdir_in/rootfs/extracted/etc/mdev.conf"
+
+if ! grep -q "mmcblk" "$MDEV_CONF"; then
+    echo "mmcblk[0-9]p[0-9] 0:0 660 */usr/bin/rb_hotplug.sh" >> "$MDEV_CONF"
+fi
+
+if ! grep -q "sd\[a-z\]" "$MDEV_CONF"; then
+    echo "sd[a-z][0-9]      0:0 660 */usr/bin/rb_hotplug.sh" >> "$MDEV_CONF"
+fi
+
 ################################################################################
 ### rebuild
 ################################################################################
-- 
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