1 // SPDX-License-Identifier: GPL-2.0-only
2 // motu-protocol-v1.c - a part of driver for MOTU FireWire series
4 // Copyright (c) 2021 Takashi Sakamoto <o-takashi@sakamocchi.jp>
12 // 0xffff0000: ISOC_COMM_CONTROL_MASK in motu-stream.c.
20 //   0x00000800: analog-1/2
21 //   0x00001a00: analog-3/4
22 //   0x00002c00: analog-5/6
23 //   0x00003e00: analog-7/8
24 //   0x00000000: analog-1
25 //   0x00000900: analog-2
26 //   0x00001200: analog-3
27 //   0x00001b00: analog-4
28 //   0x00002400: analog-5
29 //   0x00002d00: analog-6
30 //   0x00003600: analog-7
31 //   0x00003f00: analog-8
35 // 0x00000004: rate of sampling clock.
38 // 0x00000023: source of sampling clock.
76 //   0x00004800: analog-1/2
77 //   0x00005a00: analog-3/4
78 //   0x00006c00: analog-5/6
79 //   0x00007e00: analog-7/8
80 //   0x00104800: AES/EBU-1/2
81 //   0x00004000: analog-1
82 //   0x00004900: analog-2
83 //   0x00005200: analog-3
84 //   0x00005b00: analog-4
85 //   0x00006400: analog-5
86 //   0x00006d00: analog-6
87 //   0x00007600: analog-7
88 //   0x00007f00: analog-8
89 //   0x00104000: AES/EBU-1
90 //   0x00104900: AES/EBU-2
96 // 0x00000018: nominal rate of sampling clock.
101 // 0x00000007: source of sampling clock.
162 		return -ENXIO;  in parse_clock_rate_896()
181 	if (motu->spec == &snd_motu_spec_828)  in snd_motu_protocol_v1_get_clock_rate()
183 	else if (motu->spec == &snd_motu_spec_896)  in snd_motu_protocol_v1_get_clock_rate()
186 		return -ENXIO;  in snd_motu_protocol_v1_get_clock_rate()
234 		return -EINVAL;  in set_clock_rate_896()
246 	if (motu->spec == &snd_motu_spec_828)  in snd_motu_protocol_v1_set_clock_rate()
248 	else if (motu->spec == &snd_motu_spec_896)  in snd_motu_protocol_v1_set_clock_rate()
251 		return -ENXIO;  in snd_motu_protocol_v1_set_clock_rate()
287 		return -ENXIO;  in get_clock_source_828()
324 		return -ENXIO;  in get_clock_source_896()
332 	if (motu->spec == &snd_motu_spec_828)  in snd_motu_protocol_v1_get_clock_source()
334 	else if (motu->spec == &snd_motu_spec_896)  in snd_motu_protocol_v1_get_clock_source()
337 		return -ENXIO;  in snd_motu_protocol_v1_get_clock_source()
354 		// since the device voluntarily mutes outputs. As a workaround, yield processor over  in switch_fetching_mode_828()
385 	if (motu->spec == &snd_motu_spec_828)  in snd_motu_protocol_v1_switch_fetching_mode()
387 	else if (motu->spec == &snd_motu_spec_896)  in snd_motu_protocol_v1_switch_fetching_mode()
390 		return -ENXIO;  in snd_motu_protocol_v1_switch_fetching_mode()
399 	motu->tx_packet_formats.pcm_byte_offset = 4;  in detect_packet_formats_828()
400 	motu->tx_packet_formats.msg_chunks = 2;  in detect_packet_formats_828()
402 	motu->rx_packet_formats.pcm_byte_offset = 4;  in detect_packet_formats_828()
403 	motu->rx_packet_formats.msg_chunks = 0;  in detect_packet_formats_828()
412 		motu->tx_packet_formats.pcm_chunks[0] += 8;  in detect_packet_formats_828()
415 		motu->rx_packet_formats.pcm_chunks[0] += 8;  in detect_packet_formats_828()
423 	motu->tx_packet_formats.pcm_byte_offset = 4;  in detect_packet_formats_896()
424 	motu->rx_packet_formats.pcm_byte_offset = 4;  in detect_packet_formats_896()
427 	motu->tx_packet_formats.msg_chunks = 0;  in detect_packet_formats_896()
428 	motu->rx_packet_formats.msg_chunks = 0;  in detect_packet_formats_896()
432 	motu->tx_packet_formats.pcm_chunks[0] += 8;  in detect_packet_formats_896()
433 	motu->tx_packet_formats.pcm_chunks[1] += 8;  in detect_packet_formats_896()
435 	motu->rx_packet_formats.pcm_chunks[0] += 8;  in detect_packet_formats_896()
436 	motu->rx_packet_formats.pcm_chunks[1] += 8;  in detect_packet_formats_896()
443 	memcpy(motu->tx_packet_formats.pcm_chunks, motu->spec->tx_fixed_pcm_chunks,  in snd_motu_protocol_v1_cache_packet_formats()
444 	       sizeof(motu->tx_packet_formats.pcm_chunks));  in snd_motu_protocol_v1_cache_packet_formats()
445 	memcpy(motu->rx_packet_formats.pcm_chunks, motu->spec->rx_fixed_pcm_chunks,  in snd_motu_protocol_v1_cache_packet_formats()
446 	       sizeof(motu->rx_packet_formats.pcm_chunks));  in snd_motu_protocol_v1_cache_packet_formats()
448 	if (motu->spec == &snd_motu_spec_828)  in snd_motu_protocol_v1_cache_packet_formats()
450 	else if (motu->spec == &snd_motu_spec_896)  in snd_motu_protocol_v1_cache_packet_formats()