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

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+# Mestre kernel config fragment — evdev + ALSA MIDI sequencer
+#
+# Applied on top of linux.config via BR2_LINUX_KERNEL_CONFIG_FRAGMENT_FILES.
+# These symbols are required for mestred (the evdev→ALSA MIDI bridge).
+#
+# Many of these may already be set in linux.config; the fragment is kept
+# separate to make the MIDI dependency explicit and easy to trace.
+
+# Input subsystem — evdev is the interface mestred reads
+CONFIG_INPUT_EVDEV=y
+CONFIG_INPUT_KEYBOARD=y
+CONFIG_INPUT_MISC=y
+
+# HID (USB MIDI devices, in case we ever attach one)
+CONFIG_HID=y
+CONFIG_UHID=y
+
+# ALSA core
+CONFIG_SND=y
+CONFIG_SND_TIMER=y
+CONFIG_SND_PCM=y
+
+# ALSA Sequencer — the MIDI bus mestred publishes to
+CONFIG_SND_SEQ_DEVICE=y
+CONFIG_SND_SEQUENCER=y
+CONFIG_SND_SEQ_MIDI=y
+CONFIG_SND_SEQ_MIDI_EVENT=y
+CONFIG_SND_RAWMIDI=y
+CONFIG_SND_DRIVERS=y
+
+# Virtual soundcard — useful for testing piHPSDR MIDI mapping on the bench
+# without needing the actual X6200 input devices.
+CONFIG_SND_DUMMY=m
+
+# Expose kernel config via /proc/config.gz (useful for debugging)
+CONFIG_IKCONFIG=y
+CONFIG_IKCONFIG_PROC=y