2 // ff-protocol-latter - a part of driver for RME Fireface series
10 #include "ff.h"
75 static int latter_get_clock(struct snd_ff *ff, unsigned int *rate,  in latter_get_clock()  argument
82 	err = snd_fw_transaction(ff->unit, TCODE_READ_QUADLET_REQUEST,  in latter_get_clock()
88 	return parse_clock_bits(data, rate, src, ff->unit_version);  in latter_get_clock()
91 static int latter_switch_fetching_mode(struct snd_ff *ff, bool enable)  in latter_switch_fetching_mode()  argument
102 	return snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,  in latter_switch_fetching_mode()
106 static int latter_allocate_resources(struct snd_ff *ff, unsigned int rate)  in latter_allocate_resources()  argument
131 	err = snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,  in latter_allocate_resources()
142 		err = latter_get_clock(ff, &curr_rate, &src);  in latter_allocate_resources()
164 	ff->tx_resources.channels_mask = 0x00000000000000ffuLL;  in latter_allocate_resources()
165 	err = fw_iso_resources_allocate(&ff->tx_resources,  in latter_allocate_resources()
166 			amdtp_stream_get_max_payload(&ff->tx_stream),  in latter_allocate_resources()
167 			fw_parent_device(ff->unit)->max_speed);  in latter_allocate_resources()
172 	ff->rx_resources.channels_mask = 0x00000000000000ffuLL;  in latter_allocate_resources()
173 	err = fw_iso_resources_allocate(&ff->rx_resources,  in latter_allocate_resources()
174 			amdtp_stream_get_max_payload(&ff->rx_stream),  in latter_allocate_resources()
175 			fw_parent_device(ff->unit)->max_speed);  in latter_allocate_resources()
177 		fw_iso_resources_free(&ff->tx_resources);  in latter_allocate_resources()
182 static int latter_begin_session(struct snd_ff *ff, unsigned int rate)  in latter_begin_session()  argument
184 	unsigned int generation = ff->rx_resources.generation;  in latter_begin_session()
190 	if (ff->unit_version == SND_FF_UNIT_VERSION_UCX) {  in latter_begin_session()
215 	if (generation != fw_parent_device(ff->unit)->card->generation) {  in latter_begin_session()
216 		err = fw_iso_resources_update(&ff->tx_resources);  in latter_begin_session()
220 		err = fw_iso_resources_update(&ff->rx_resources);  in latter_begin_session()
225 	data = (ff->tx_resources.channel << 8) | ff->rx_resources.channel;  in latter_begin_session()
227 	err = snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,  in latter_begin_session()
233 	return snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,  in latter_begin_session()
237 static void latter_finish_session(struct snd_ff *ff)  in latter_finish_session()  argument
242 	snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,  in latter_finish_session()
246 static void latter_dump_status(struct snd_ff *ff, struct snd_info_buffer *buffer)  in latter_dump_status()  argument
265 	err = snd_fw_transaction(ff->unit, TCODE_READ_QUADLET_REQUEST,  in latter_dump_status()
286 	err = parse_clock_bits(data, &rate, &src, ff->unit_version);  in latter_dump_status()
316 static void latter_handle_midi_msg(struct snd_ff *ff, unsigned int offset,  in latter_handle_midi_msg()  argument
325 	if (index >= ff->spec->midi_in_ports)  in latter_handle_midi_msg()
351 	substream = READ_ONCE(ff->tx_midi_substreams[index]);  in latter_handle_midi_msg()
406 static int latter_fill_midi_msg(struct snd_ff *ff,  in latter_fill_midi_msg()  argument
419 	if (!ff->on_sysex[port]) {  in latter_fill_midi_msg()
425 			ff->on_sysex[port] = true;  in latter_fill_midi_msg()
439 			ff->on_sysex[port] = false;  in latter_fill_midi_msg()
445 	ff->msg_buf[port][0] = cpu_to_le32(data);  in latter_fill_midi_msg()
446 	ff->rx_bytes[port] = consumed;  in latter_fill_midi_msg()