Initial GXFP5130 userspace prototype

include/gxfp/goodix_ec_uapi.h

@@ -0,0 +1,37 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+#ifndef _UAPI_GOODIX_EC_H_
+#define _UAPI_GOODIX_EC_H_
+
+#include <linux/ioctl.h>
+#include <linux/types.h>
+
+#define GOODIX_EC_UAPI_MAGIC		'G'
+#define GOODIX_EC_UAPI_TX_MAX		500u
+#define GOODIX_EC_UAPI_RX_MAX		(128u * 1024u)
+
+/*
+ * read(2) returns one record:
+ *   struct goodix_ec_record_header
+ *   followed by len bytes of MP payload (normally one Goodix frame).
+ */
+struct goodix_ec_record_header {
+	__u32 len;
+	__u32 mp_type;
+	__u64 timestamp_ns;
+};
+
+/*
+ * write(2) accepts:
+ *   struct goodix_ec_tx_header
+ *   followed by payload_len bytes used as the MP payload.
+ */
+struct goodix_ec_tx_header {
+	__u8 mp_flags;
+	__u8 reserved;
+	__u16 payload_len;
+	__u32 flags;
+};
+
+#define GOODIX_EC_IOCTL_FLUSH_RX	_IO(GOODIX_EC_UAPI_MAGIC, 0x11)
+
+#endif /* _UAPI_GOODIX_EC_H_ */