1 files changed, 81 insertions, 0 deletions
diff --git a/drivers/usb/gadget/function/u_midi2.h b/drivers/usb/gadget/function/u_midi2.h
new file mode 100644
index 000000000000..4e7adb41dfb7
--- /dev/null
+++ b/drivers/usb/gadget/function/u_midi2.h
@@ -0,0 +1,81 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Utility definitions for MIDI 2.0 function
+ */
+
+#ifndef U_MIDI2_H
+#define U_MIDI2_H
+
+#include <linux/usb/composite.h>
+#include <sound/asound.h>
+
+struct f_midi2_opts;
+struct f_midi2_ep_opts;
+struct f_midi2_block_opts;
+
+/* UMP Function Block info */
+struct f_midi2_block_info {
+	unsigned int direction;		/* FB direction: 1-3 */
+	unsigned int first_group;	/* first UMP group: 0-15 */
+	unsigned int num_groups;	/* number of UMP groups: 1-16 */
+	unsigned int midi1_first_group;	/* first UMP group for MIDI 1.0 */
+	unsigned int midi1_num_groups;	/* number of UMP groups for MIDI 1.0 */
+	unsigned int ui_hint;		/* UI-hint: 0-3 */
+	unsigned int midi_ci_version;	/* MIDI-CI version: 0-255 */
+	unsigned int sysex8_streams;	/* number of sysex8 streams: 0-255 */
+	unsigned int is_midi1;		/* MIDI 1.0 port: 0-2 */
+	bool active;			/* FB active flag: bool */
+	const char *name;		/* FB name */
+};
+
+/* UMP Endpoint info */
+struct f_midi2_ep_info {
+	unsigned int protocol_caps;	/* protocol capabilities: 1-3 */
+	unsigned int protocol;		/* default protocol: 1-2 */
+	unsigned int manufacturer;	/* manufacturer id: 0-0xffffff */
+	unsigned int family;		/* device family id: 0-0xffff */
+	unsigned int model;		/* device model id: 0x-0xffff */
+	unsigned int sw_revision;	/* software revision: 32bit */
+
+	const char *ep_name;		/* Endpoint name */
+	const char *product_id;		/* Product ID */
+};
+
+struct f_midi2_card_info {
+	bool process_ump;		/* process UMP stream: bool */
+	bool static_block;		/* static FBs: bool */
+	unsigned int req_buf_size;	/* request buffer size */
+	unsigned int num_reqs;		/* number of requests */
+	const char *iface_name;		/* interface name */
+};
+
+struct f_midi2_block_opts {
+	struct config_group group;
+	unsigned int id;
+	struct f_midi2_block_info info;
+	struct f_midi2_ep_opts *ep;
+};
+
+struct f_midi2_ep_opts {
+	struct config_group group;
+	unsigned int index;
+	struct f_midi2_ep_info info;
+	struct f_midi2_block_opts *blks[SNDRV_UMP_MAX_BLOCKS];
+	struct f_midi2_opts *opts;
+};
+
+#define MAX_UMP_EPS		4
+#define MAX_CABLES		16
+
+struct f_midi2_opts {
+	struct usb_function_instance func_inst;
+	struct mutex lock;
+	int refcnt;
+
+	struct f_midi2_card_info info;
+
+	unsigned int num_eps;
+	struct f_midi2_ep_opts *eps[MAX_UMP_EPS];
+};
+
+#endif /* U_MIDI2_H */