1 // SPDX-License-Identifier: GPL-2.0
2 // ff-protocol-latter.c - a part of driver for RME Fireface series
32 //  0x00000040: Synchronized to word clock on BNC interface
33 //  0x00000020: Synchronized to ADAT or S/PDIF on optical interface
34 //  0x00000010: Synchronized to S/PDIF on coaxial interface
42 //   0x0f000000: detected rate of ADAT-B on 2nd optical interface
43 //   0x00f00000: detected rate of ADAT-A on 1st optical interface
48 //     0x00000800: ADAT-B
49 //     0x00000600: ADAT-A
52 //   0x00000080: Synchronized to ADAT-B on 2nd optical interface
53 //   0x00000040: Synchronized to ADAT-A on 1st optical interface
54 //   0x00000020: Synchronized to AES/EBU on XLR or 2nd optical interface
55 //   0x00000010: Synchronized to word clock on BNC interface
56 //   0x00000008: Lock ADAT-B on 2nd optical interface
57 //   0x00000004: Lock ADAT-A on 1st optical interface
120 		if (rate_bits == rate_entry->flag) {  in parse_clock_bits()
121 			*rate = rate_entry->rate;  in parse_clock_bits()
126 		return -EIO;  in parse_clock_bits()
130 		if ((data & 0x000e00) == clk_entry->flag) {  in parse_clock_bits()
131 			*src = clk_entry->src;  in parse_clock_bits()
136 		return -EIO;  in parse_clock_bits()
148 	err = snd_fw_transaction(ff->unit, TCODE_READ_QUADLET_REQUEST,  in latter_get_clock()
154 	return parse_clock_bits(data, rate, src, ff->unit_version);  in latter_get_clock()
168 	return snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,  in latter_switch_fetching_mode()
189 		return -EINVAL;  in latter_allocate_resources()
197 	err = snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,  in latter_allocate_resources()
216 		return -ETIMEDOUT;  in latter_allocate_resources()
223 		return -EINVAL;  in latter_allocate_resources()
229 	// Keep resources for in-stream.  in latter_allocate_resources()
230 	ff->tx_resources.channels_mask = 0x00000000000000ffuLL;  in latter_allocate_resources()
231 	err = fw_iso_resources_allocate(&ff->tx_resources,  in latter_allocate_resources()
232 			amdtp_stream_get_max_payload(&ff->tx_stream),  in latter_allocate_resources()
233 			fw_parent_device(ff->unit)->max_speed);  in latter_allocate_resources()
237 	// Keep resources for out-stream.  in latter_allocate_resources()
238 	ff->rx_resources.channels_mask = 0x00000000000000ffuLL;  in latter_allocate_resources()
239 	err = fw_iso_resources_allocate(&ff->rx_resources,  in latter_allocate_resources()
240 			amdtp_stream_get_max_payload(&ff->rx_stream),  in latter_allocate_resources()
241 			fw_parent_device(ff->unit)->max_speed);  in latter_allocate_resources()
243 		fw_iso_resources_free(&ff->tx_resources);  in latter_allocate_resources()
250 	unsigned int generation = ff->rx_resources.generation;  in latter_begin_session()
256 	if (ff->unit_version == SND_FF_UNIT_VERSION_UCX) {  in latter_begin_session()
266 			return -EINVAL;  in latter_begin_session()
269 		// IEEE 1394a (400 Mbps), Analog 1-12 and AES are available  in latter_begin_session()
278 			return -EINVAL;  in latter_begin_session()
281 	if (generation != fw_parent_device(ff->unit)->card->generation) {  in latter_begin_session()
282 		err = fw_iso_resources_update(&ff->tx_resources);  in latter_begin_session()
286 		err = fw_iso_resources_update(&ff->rx_resources);  in latter_begin_session()
291 	data = (ff->tx_resources.channel << 8) | ff->rx_resources.channel;  in latter_begin_session()
293 	err = snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,  in latter_begin_session()
299 	return snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,  in latter_begin_session()
308 	snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,  in latter_finish_session()
325 		{ "ADAT-A",	0x00000004, 0x00000040, },  in latter_dump_status()
326 		{ "ADAT-B",	0x00000008, 0x00000080, },  in latter_dump_status()
337 	err = snd_fw_transaction(ff->unit, TCODE_READ_QUADLET_REQUEST,  in latter_dump_status()
345 	if (ff->unit_version == SND_FF_UNIT_VERSION_UCX) {  in latter_dump_status()
355 		snd_iprintf(buffer, "%s: ", clk_entry->label);  in latter_dump_status()
356 		if (data & clk_entry->locked_mask) {  in latter_dump_status()
357 			if (data & clk_entry->synced_mask)  in latter_dump_status()
366 	err = parse_clock_bits(data, &rate, &src, ff->unit_version);  in latter_dump_status()
376 // NOTE: transactions are transferred within 0x00-0x7f in allocated range of
384 // - 0x00002000: 0x'....'....'0000'0000
385 // - 0x00004000: 0x'....'....'0000'0080
386 // - 0x00008000: 0x'....'....'0000'0100
387 // - 0x00010000: 0x'....'....'0000'0180
392 // Actually, the register is write-only and includes the other settings such as
405 	if (index >= ff->spec->midi_in_ports)  in latter_handle_midi_msg()
431 	substream = READ_ONCE(ff->tx_midi_substreams[index]);  in latter_handle_midi_msg()
450 	case 0xff:	/* System reset. */  in calculate_message_bytes()
483 	return -EINVAL;  in calculate_message_bytes()
499 	if (!ff->on_sysex[port]) {  in latter_fill_midi_msg()
505 			ff->on_sysex[port] = true;  in latter_fill_midi_msg()
513 				consumed -= 1;  in latter_fill_midi_msg()
519 			ff->on_sysex[port] = false;  in latter_fill_midi_msg()
525 	ff->msg_buf[port][0] = cpu_to_le32(data);  in latter_fill_midi_msg()
526 	ff->rx_bytes[port] = consumed;  in latter_fill_midi_msg()