xref: /openbmc/linux/sound/firewire/fcp.h (revision 35267cea)
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef SOUND_FIREWIRE_FCP_H_INCLUDED
3 #define SOUND_FIREWIRE_FCP_H_INCLUDED
4 
5 #define	AVC_PLUG_INFO_BUF_BYTES	4
6 
7 struct fw_unit;
8 
9 /*
10  * AV/C Digital Interface Command Set General Specification 4.2
11  * (Sep 2004, 1394TA)
12  */
13 enum avc_general_plug_dir {
14 	AVC_GENERAL_PLUG_DIR_IN		= 0,
15 	AVC_GENERAL_PLUG_DIR_OUT	= 1,
16 	AVC_GENERAL_PLUG_DIR_COUNT
17 };
18 int avc_general_set_sig_fmt(struct fw_unit *unit, unsigned int rate,
19 			    enum avc_general_plug_dir dir,
20 			    unsigned short plug);
21 int avc_general_get_sig_fmt(struct fw_unit *unit, unsigned int *rate,
22 			    enum avc_general_plug_dir dir,
23 			    unsigned short plug);
24 int avc_general_get_plug_info(struct fw_unit *unit, unsigned int subunit_type,
25 			      unsigned int subunit_id, unsigned int subfunction,
26 			      u8 info[AVC_PLUG_INFO_BUF_BYTES]);
27 
28 int fcp_avc_transaction(struct fw_unit *unit,
29 			const void *command, unsigned int command_size,
30 			void *response, unsigned int response_size,
31 			unsigned int response_match_bytes);
32 void fcp_bus_reset(struct fw_unit *unit);
33 
34 #endif
35