1bea36afaSTakashi Sakamoto // SPDX-License-Identifier: GPL-2.0-only
2bea36afaSTakashi Sakamoto //
3bea36afaSTakashi Sakamoto // motu-register-dsp-message-parser.c - a part of driver for MOTU FireWire series
4bea36afaSTakashi Sakamoto //
5bea36afaSTakashi Sakamoto // Copyright (c) 2021 Takashi Sakamoto <o-takashi@sakamocchi.jp>
6bea36afaSTakashi Sakamoto
7bea36afaSTakashi Sakamoto // Below models allow software to configure their DSP functions by asynchronous transaction
8bea36afaSTakashi Sakamoto // to access their internal registers.
9bea36afaSTakashi Sakamoto // * 828 mk2
10bea36afaSTakashi Sakamoto // * 896hd
11bea36afaSTakashi Sakamoto // * Traveler
12bea36afaSTakashi Sakamoto // * 8 pre
13bea36afaSTakashi Sakamoto // * Ultralite
14bea36afaSTakashi Sakamoto // * 4 pre
15bea36afaSTakashi Sakamoto // * Audio Express
16bea36afaSTakashi Sakamoto //
17bea36afaSTakashi Sakamoto // Additionally, isochronous packets from the above models include messages to notify state of
18bea36afaSTakashi Sakamoto // DSP. The messages are two set of 3 byte data in 2nd and 3rd quadlet of data block. When user
19bea36afaSTakashi Sakamoto // operates hardware components such as dial and switch, corresponding messages are transferred.
20bea36afaSTakashi Sakamoto // The messages include Hardware metering and MIDI messages as well.
21bea36afaSTakashi Sakamoto
22bea36afaSTakashi Sakamoto #include "motu.h"
23bea36afaSTakashi Sakamoto
24bea36afaSTakashi Sakamoto #define MSG_FLAG_POS 4
25bea36afaSTakashi Sakamoto #define MSG_FLAG_TYPE_MASK 0xf8
26bea36afaSTakashi Sakamoto #define MSG_FLAG_MIDI_MASK 0x01
27bea36afaSTakashi Sakamoto #define MSG_FLAG_MODEL_SPECIFIC_MASK 0x06
28bea36afaSTakashi Sakamoto #define MSG_FLAG_8PRE 0x00
29bea36afaSTakashi Sakamoto #define MSG_FLAG_ULTRALITE 0x04
30bea36afaSTakashi Sakamoto #define MSG_FLAG_TRAVELER 0x04
31bea36afaSTakashi Sakamoto #define MSG_FLAG_828MK2 0x04
32bea36afaSTakashi Sakamoto #define MSG_FLAG_896HD 0x04
33bea36afaSTakashi Sakamoto #define MSG_FLAG_4PRE 0x05 // MIDI mask is in 8th byte.
34bea36afaSTakashi Sakamoto #define MSG_FLAG_AUDIOEXPRESS 0x05 // MIDI mask is in 8th byte.
35bea36afaSTakashi Sakamoto #define MSG_FLAG_TYPE_SHIFT 3
36bea36afaSTakashi Sakamoto #define MSG_VALUE_POS 5
37bea36afaSTakashi Sakamoto #define MSG_MIDI_BYTE_POS 6
38bea36afaSTakashi Sakamoto #define MSG_METER_IDX_POS 7
39bea36afaSTakashi Sakamoto
40bea36afaSTakashi Sakamoto // In 4 pre and Audio express, meter index is in 6th byte. MIDI flag is in 8th byte and MIDI byte
41bea36afaSTakashi Sakamoto // is in 7th byte.
42bea36afaSTakashi Sakamoto #define MSG_METER_IDX_POS_4PRE_AE 6
43bea36afaSTakashi Sakamoto #define MSG_MIDI_BYTE_POS_4PRE_AE 7
44bea36afaSTakashi Sakamoto #define MSG_FLAG_MIDI_POS_4PRE_AE 8
45bea36afaSTakashi Sakamoto
46bea36afaSTakashi Sakamoto enum register_dsp_msg_type {
47bea36afaSTakashi Sakamoto // Used for messages with no information.
48bea36afaSTakashi Sakamoto INVALID = 0x00,
49bea36afaSTakashi Sakamoto MIXER_SELECT = 0x01,
50bea36afaSTakashi Sakamoto MIXER_SRC_GAIN = 0x02,
51bea36afaSTakashi Sakamoto MIXER_SRC_PAN = 0x03,
52bea36afaSTakashi Sakamoto MIXER_SRC_FLAG = 0x04,
53bea36afaSTakashi Sakamoto MIXER_OUTPUT_PAIRED_VOLUME = 0x05,
54bea36afaSTakashi Sakamoto MIXER_OUTPUT_PAIRED_FLAG = 0x06,
55bea36afaSTakashi Sakamoto MAIN_OUTPUT_PAIRED_VOLUME = 0x07,
56bea36afaSTakashi Sakamoto HP_OUTPUT_PAIRED_VOLUME = 0x08,
576ca81d2bSTakashi Sakamoto HP_OUTPUT_PAIRED_ASSIGNMENT = 0x09,
58bea36afaSTakashi Sakamoto // Transferred by all models but the purpose is still unknown.
59bea36afaSTakashi Sakamoto UNKNOWN_0 = 0x0a,
60bea36afaSTakashi Sakamoto // Specific to 828mk2, 896hd, Traveler.
61bea36afaSTakashi Sakamoto UNKNOWN_2 = 0x0c,
62bea36afaSTakashi Sakamoto // Specific to 828mk2, Traveler, and 896hd (not functional).
63bea36afaSTakashi Sakamoto LINE_INPUT_BOOST = 0x0d,
64bea36afaSTakashi Sakamoto // Specific to 828mk2, Traveler, and 896hd (not functional).
65bea36afaSTakashi Sakamoto LINE_INPUT_NOMINAL_LEVEL = 0x0e,
66bea36afaSTakashi Sakamoto // Specific to Ultralite, 4 pre, Audio express, and 8 pre (not functional).
67bea36afaSTakashi Sakamoto INPUT_GAIN_AND_INVERT = 0x15,
68bea36afaSTakashi Sakamoto // Specific to 4 pre, and Audio express.
69bea36afaSTakashi Sakamoto INPUT_FLAG = 0x16,
70bea36afaSTakashi Sakamoto // Specific to 4 pre, and Audio express.
71bea36afaSTakashi Sakamoto MIXER_SRC_PAIRED_BALANCE = 0x17,
72bea36afaSTakashi Sakamoto // Specific to 4 pre, and Audio express.
73bea36afaSTakashi Sakamoto MIXER_SRC_PAIRED_WIDTH = 0x18,
74bea36afaSTakashi Sakamoto // Transferred by all models. This type of message interposes the series of the other
75bea36afaSTakashi Sakamoto // messages. The message delivers signal level up to 96.0 kHz. In 828mk2, 896hd, and
76bea36afaSTakashi Sakamoto // Traveler, one of physical outputs is selected for the message. The selection is done
77bea36afaSTakashi Sakamoto // by LSB one byte in asynchronous write quadlet transaction to 0x'ffff'f000'0b2c.
78bea36afaSTakashi Sakamoto METER = 0x1f,
79bea36afaSTakashi Sakamoto };
80bea36afaSTakashi Sakamoto
814c9eda8fSTakashi Sakamoto #define EVENT_QUEUE_SIZE 16
824c9eda8fSTakashi Sakamoto
83bea36afaSTakashi Sakamoto struct msg_parser {
8458b62ab7STakashi Sakamoto spinlock_t lock;
85bea36afaSTakashi Sakamoto struct snd_firewire_motu_register_dsp_meter meter;
86bea36afaSTakashi Sakamoto bool meter_pos_quirk;
87dc36a975STakashi Sakamoto
88dc36a975STakashi Sakamoto struct snd_firewire_motu_register_dsp_parameter param;
89dc36a975STakashi Sakamoto u8 prev_mixer_src_type;
90dc36a975STakashi Sakamoto u8 mixer_ch;
91dc36a975STakashi Sakamoto u8 mixer_src_ch;
927d843c49STakashi Sakamoto
937d843c49STakashi Sakamoto u8 input_ch;
947d843c49STakashi Sakamoto u8 prev_msg_type;
954c9eda8fSTakashi Sakamoto
964c9eda8fSTakashi Sakamoto u32 event_queue[EVENT_QUEUE_SIZE];
974c9eda8fSTakashi Sakamoto unsigned int push_pos;
98634ec0b2STakashi Sakamoto unsigned int pull_pos;
99bea36afaSTakashi Sakamoto };
100bea36afaSTakashi Sakamoto
snd_motu_register_dsp_message_parser_new(struct snd_motu * motu)101bea36afaSTakashi Sakamoto int snd_motu_register_dsp_message_parser_new(struct snd_motu *motu)
102bea36afaSTakashi Sakamoto {
103bea36afaSTakashi Sakamoto struct msg_parser *parser;
104bea36afaSTakashi Sakamoto parser = devm_kzalloc(&motu->card->card_dev, sizeof(*parser), GFP_KERNEL);
105bea36afaSTakashi Sakamoto if (!parser)
106bea36afaSTakashi Sakamoto return -ENOMEM;
10758b62ab7STakashi Sakamoto spin_lock_init(&parser->lock);
108bea36afaSTakashi Sakamoto if (motu->spec == &snd_motu_spec_4pre || motu->spec == &snd_motu_spec_audio_express)
109bea36afaSTakashi Sakamoto parser->meter_pos_quirk = true;
110bea36afaSTakashi Sakamoto motu->message_parser = parser;
111bea36afaSTakashi Sakamoto return 0;
112bea36afaSTakashi Sakamoto }
113bea36afaSTakashi Sakamoto
snd_motu_register_dsp_message_parser_init(struct snd_motu * motu)114bea36afaSTakashi Sakamoto int snd_motu_register_dsp_message_parser_init(struct snd_motu *motu)
115bea36afaSTakashi Sakamoto {
116dc36a975STakashi Sakamoto struct msg_parser *parser = motu->message_parser;
117dc36a975STakashi Sakamoto
118dc36a975STakashi Sakamoto parser->prev_mixer_src_type = INVALID;
119dc36a975STakashi Sakamoto parser->mixer_ch = 0xff;
120dc36a975STakashi Sakamoto parser->mixer_src_ch = 0xff;
1217d843c49STakashi Sakamoto parser->prev_msg_type = INVALID;
122dc36a975STakashi Sakamoto
123bea36afaSTakashi Sakamoto return 0;
124bea36afaSTakashi Sakamoto }
125bea36afaSTakashi Sakamoto
126634ec0b2STakashi Sakamoto // Rough implementaion of queue without overrun check.
queue_event(struct snd_motu * motu,u8 msg_type,u8 identifier0,u8 identifier1,u8 val)1274c9eda8fSTakashi Sakamoto static void queue_event(struct snd_motu *motu, u8 msg_type, u8 identifier0, u8 identifier1, u8 val)
1284c9eda8fSTakashi Sakamoto {
1294c9eda8fSTakashi Sakamoto struct msg_parser *parser = motu->message_parser;
1304c9eda8fSTakashi Sakamoto unsigned int pos = parser->push_pos;
1314c9eda8fSTakashi Sakamoto u32 entry;
1324c9eda8fSTakashi Sakamoto
1334c9eda8fSTakashi Sakamoto if (!motu->hwdep || motu->hwdep->used == 0)
1344c9eda8fSTakashi Sakamoto return;
1354c9eda8fSTakashi Sakamoto
1364c9eda8fSTakashi Sakamoto entry = (msg_type << 24) | (identifier0 << 16) | (identifier1 << 8) | val;
1374c9eda8fSTakashi Sakamoto parser->event_queue[pos] = entry;
1384c9eda8fSTakashi Sakamoto
1394c9eda8fSTakashi Sakamoto ++pos;
1404c9eda8fSTakashi Sakamoto if (pos >= EVENT_QUEUE_SIZE)
1414c9eda8fSTakashi Sakamoto pos = 0;
1424c9eda8fSTakashi Sakamoto parser->push_pos = pos;
1434c9eda8fSTakashi Sakamoto }
1444c9eda8fSTakashi Sakamoto
snd_motu_register_dsp_message_parser_parse(const struct amdtp_stream * s,const struct pkt_desc * desc,unsigned int count)145*0cac60c7STakashi Sakamoto void snd_motu_register_dsp_message_parser_parse(const struct amdtp_stream *s,
146*0cac60c7STakashi Sakamoto const struct pkt_desc *desc, unsigned int count)
147bea36afaSTakashi Sakamoto {
148*0cac60c7STakashi Sakamoto struct snd_motu *motu = container_of(s, struct snd_motu, tx_stream);
149*0cac60c7STakashi Sakamoto unsigned int data_block_quadlets = s->data_block_quadlets;
150bea36afaSTakashi Sakamoto struct msg_parser *parser = motu->message_parser;
151bea36afaSTakashi Sakamoto bool meter_pos_quirk = parser->meter_pos_quirk;
152634ec0b2STakashi Sakamoto unsigned int pos = parser->push_pos;
15358b62ab7STakashi Sakamoto unsigned long flags;
154bea36afaSTakashi Sakamoto int i;
155bea36afaSTakashi Sakamoto
15658b62ab7STakashi Sakamoto spin_lock_irqsave(&parser->lock, flags);
15758b62ab7STakashi Sakamoto
158*0cac60c7STakashi Sakamoto for (i = 0; i < count; ++i) {
159bea36afaSTakashi Sakamoto __be32 *buffer = desc->ctx_payload;
160bea36afaSTakashi Sakamoto unsigned int data_blocks = desc->data_blocks;
161bea36afaSTakashi Sakamoto int j;
162bea36afaSTakashi Sakamoto
163*0cac60c7STakashi Sakamoto desc = amdtp_stream_next_packet_desc(s, desc);
164*0cac60c7STakashi Sakamoto
165bea36afaSTakashi Sakamoto for (j = 0; j < data_blocks; ++j) {
166bea36afaSTakashi Sakamoto u8 *b = (u8 *)buffer;
167bea36afaSTakashi Sakamoto u8 msg_type = (b[MSG_FLAG_POS] & MSG_FLAG_TYPE_MASK) >> MSG_FLAG_TYPE_SHIFT;
168bea36afaSTakashi Sakamoto u8 val = b[MSG_VALUE_POS];
169bea36afaSTakashi Sakamoto
170bea36afaSTakashi Sakamoto buffer += data_block_quadlets;
171bea36afaSTakashi Sakamoto
172bea36afaSTakashi Sakamoto switch (msg_type) {
173dc36a975STakashi Sakamoto case MIXER_SELECT:
174dc36a975STakashi Sakamoto {
175dc36a975STakashi Sakamoto u8 mixer_ch = val / 0x20;
176dc36a975STakashi Sakamoto if (mixer_ch < SNDRV_FIREWIRE_MOTU_REGISTER_DSP_MIXER_COUNT) {
177dc36a975STakashi Sakamoto parser->mixer_src_ch = 0;
178dc36a975STakashi Sakamoto parser->mixer_ch = mixer_ch;
179dc36a975STakashi Sakamoto }
180dc36a975STakashi Sakamoto break;
181dc36a975STakashi Sakamoto }
182dc36a975STakashi Sakamoto case MIXER_SRC_GAIN:
183dc36a975STakashi Sakamoto case MIXER_SRC_PAN:
184dc36a975STakashi Sakamoto case MIXER_SRC_FLAG:
185dc36a975STakashi Sakamoto case MIXER_SRC_PAIRED_BALANCE:
186dc36a975STakashi Sakamoto case MIXER_SRC_PAIRED_WIDTH:
187dc36a975STakashi Sakamoto {
188dc36a975STakashi Sakamoto struct snd_firewire_motu_register_dsp_parameter *param = &parser->param;
189dc36a975STakashi Sakamoto u8 mixer_ch = parser->mixer_ch;
190dc36a975STakashi Sakamoto u8 mixer_src_ch = parser->mixer_src_ch;
191dc36a975STakashi Sakamoto
192dc36a975STakashi Sakamoto if (msg_type != parser->prev_mixer_src_type)
193dc36a975STakashi Sakamoto mixer_src_ch = 0;
194dc36a975STakashi Sakamoto else
195dc36a975STakashi Sakamoto ++mixer_src_ch;
196dc36a975STakashi Sakamoto parser->prev_mixer_src_type = msg_type;
197dc36a975STakashi Sakamoto
198dc36a975STakashi Sakamoto if (mixer_ch < SNDRV_FIREWIRE_MOTU_REGISTER_DSP_MIXER_COUNT &&
199dc36a975STakashi Sakamoto mixer_src_ch < SNDRV_FIREWIRE_MOTU_REGISTER_DSP_MIXER_SRC_COUNT) {
200dc36a975STakashi Sakamoto u8 mixer_ch = parser->mixer_ch;
201dc36a975STakashi Sakamoto
202dc36a975STakashi Sakamoto switch (msg_type) {
203dc36a975STakashi Sakamoto case MIXER_SRC_GAIN:
2044c9eda8fSTakashi Sakamoto if (param->mixer.source[mixer_ch].gain[mixer_src_ch] != val) {
2054c9eda8fSTakashi Sakamoto queue_event(motu, msg_type, mixer_ch, mixer_src_ch, val);
206dc36a975STakashi Sakamoto param->mixer.source[mixer_ch].gain[mixer_src_ch] = val;
2074c9eda8fSTakashi Sakamoto }
208dc36a975STakashi Sakamoto break;
209dc36a975STakashi Sakamoto case MIXER_SRC_PAN:
2104c9eda8fSTakashi Sakamoto if (param->mixer.source[mixer_ch].pan[mixer_src_ch] != val) {
2114c9eda8fSTakashi Sakamoto queue_event(motu, msg_type, mixer_ch, mixer_src_ch, val);
212dc36a975STakashi Sakamoto param->mixer.source[mixer_ch].pan[mixer_src_ch] = val;
2134c9eda8fSTakashi Sakamoto }
214dc36a975STakashi Sakamoto break;
215dc36a975STakashi Sakamoto case MIXER_SRC_FLAG:
2164c9eda8fSTakashi Sakamoto if (param->mixer.source[mixer_ch].flag[mixer_src_ch] != val) {
2174c9eda8fSTakashi Sakamoto queue_event(motu, msg_type, mixer_ch, mixer_src_ch, val);
218dc36a975STakashi Sakamoto param->mixer.source[mixer_ch].flag[mixer_src_ch] = val;
2194c9eda8fSTakashi Sakamoto }
220dc36a975STakashi Sakamoto break;
221dc36a975STakashi Sakamoto case MIXER_SRC_PAIRED_BALANCE:
2224c9eda8fSTakashi Sakamoto if (param->mixer.source[mixer_ch].paired_balance[mixer_src_ch] != val) {
2234c9eda8fSTakashi Sakamoto queue_event(motu, msg_type, mixer_ch, mixer_src_ch, val);
224dc36a975STakashi Sakamoto param->mixer.source[mixer_ch].paired_balance[mixer_src_ch] = val;
2254c9eda8fSTakashi Sakamoto }
226dc36a975STakashi Sakamoto break;
227dc36a975STakashi Sakamoto case MIXER_SRC_PAIRED_WIDTH:
2284c9eda8fSTakashi Sakamoto if (param->mixer.source[mixer_ch].paired_width[mixer_src_ch] != val) {
2294c9eda8fSTakashi Sakamoto queue_event(motu, msg_type, mixer_ch, mixer_src_ch, val);
230dc36a975STakashi Sakamoto param->mixer.source[mixer_ch].paired_width[mixer_src_ch] = val;
2314c9eda8fSTakashi Sakamoto }
232dc36a975STakashi Sakamoto break;
233dc36a975STakashi Sakamoto default:
234dc36a975STakashi Sakamoto break;
235dc36a975STakashi Sakamoto }
236dc36a975STakashi Sakamoto
237dc36a975STakashi Sakamoto parser->mixer_src_ch = mixer_src_ch;
238dc36a975STakashi Sakamoto }
239dc36a975STakashi Sakamoto break;
240dc36a975STakashi Sakamoto }
241ce69bed5STakashi Sakamoto case MIXER_OUTPUT_PAIRED_VOLUME:
242ce69bed5STakashi Sakamoto case MIXER_OUTPUT_PAIRED_FLAG:
243ce69bed5STakashi Sakamoto {
244ce69bed5STakashi Sakamoto struct snd_firewire_motu_register_dsp_parameter *param = &parser->param;
245ce69bed5STakashi Sakamoto u8 mixer_ch = parser->mixer_ch;
246ce69bed5STakashi Sakamoto
247ce69bed5STakashi Sakamoto if (mixer_ch < SNDRV_FIREWIRE_MOTU_REGISTER_DSP_MIXER_COUNT) {
248ce69bed5STakashi Sakamoto switch (msg_type) {
249ce69bed5STakashi Sakamoto case MIXER_OUTPUT_PAIRED_VOLUME:
2504c9eda8fSTakashi Sakamoto if (param->mixer.output.paired_volume[mixer_ch] != val) {
2514c9eda8fSTakashi Sakamoto queue_event(motu, msg_type, mixer_ch, 0, val);
252ce69bed5STakashi Sakamoto param->mixer.output.paired_volume[mixer_ch] = val;
2534c9eda8fSTakashi Sakamoto }
254ce69bed5STakashi Sakamoto break;
255ce69bed5STakashi Sakamoto case MIXER_OUTPUT_PAIRED_FLAG:
2564c9eda8fSTakashi Sakamoto if (param->mixer.output.paired_flag[mixer_ch] != val) {
2574c9eda8fSTakashi Sakamoto queue_event(motu, msg_type, mixer_ch, 0, val);
258ce69bed5STakashi Sakamoto param->mixer.output.paired_flag[mixer_ch] = val;
2594c9eda8fSTakashi Sakamoto }
260ce69bed5STakashi Sakamoto break;
261ce69bed5STakashi Sakamoto default:
262ce69bed5STakashi Sakamoto break;
263ce69bed5STakashi Sakamoto }
264ce69bed5STakashi Sakamoto }
265ce69bed5STakashi Sakamoto break;
266ce69bed5STakashi Sakamoto }
2676ca81d2bSTakashi Sakamoto case MAIN_OUTPUT_PAIRED_VOLUME:
2684c9eda8fSTakashi Sakamoto if (parser->param.output.main_paired_volume != val) {
2694c9eda8fSTakashi Sakamoto queue_event(motu, msg_type, 0, 0, val);
2706ca81d2bSTakashi Sakamoto parser->param.output.main_paired_volume = val;
2714c9eda8fSTakashi Sakamoto }
2726ca81d2bSTakashi Sakamoto break;
2736ca81d2bSTakashi Sakamoto case HP_OUTPUT_PAIRED_VOLUME:
2744c9eda8fSTakashi Sakamoto if (parser->param.output.hp_paired_volume != val) {
2754c9eda8fSTakashi Sakamoto queue_event(motu, msg_type, 0, 0, val);
2766ca81d2bSTakashi Sakamoto parser->param.output.hp_paired_volume = val;
2774c9eda8fSTakashi Sakamoto }
2786ca81d2bSTakashi Sakamoto break;
2796ca81d2bSTakashi Sakamoto case HP_OUTPUT_PAIRED_ASSIGNMENT:
2804c9eda8fSTakashi Sakamoto if (parser->param.output.hp_paired_assignment != val) {
2814c9eda8fSTakashi Sakamoto queue_event(motu, msg_type, 0, 0, val);
2826ca81d2bSTakashi Sakamoto parser->param.output.hp_paired_assignment = val;
2834c9eda8fSTakashi Sakamoto }
2846ca81d2bSTakashi Sakamoto break;
28541cc2338STakashi Sakamoto case LINE_INPUT_BOOST:
2864c9eda8fSTakashi Sakamoto if (parser->param.line_input.boost_flag != val) {
2874c9eda8fSTakashi Sakamoto queue_event(motu, msg_type, 0, 0, val);
28841cc2338STakashi Sakamoto parser->param.line_input.boost_flag = val;
2894c9eda8fSTakashi Sakamoto }
29041cc2338STakashi Sakamoto break;
29141cc2338STakashi Sakamoto case LINE_INPUT_NOMINAL_LEVEL:
2924c9eda8fSTakashi Sakamoto if (parser->param.line_input.nominal_level_flag != val) {
2934c9eda8fSTakashi Sakamoto queue_event(motu, msg_type, 0, 0, val);
29441cc2338STakashi Sakamoto parser->param.line_input.nominal_level_flag = val;
2954c9eda8fSTakashi Sakamoto }
29641cc2338STakashi Sakamoto break;
2977d843c49STakashi Sakamoto case INPUT_GAIN_AND_INVERT:
2987d843c49STakashi Sakamoto case INPUT_FLAG:
2997d843c49STakashi Sakamoto {
3007d843c49STakashi Sakamoto struct snd_firewire_motu_register_dsp_parameter *param = &parser->param;
3017d843c49STakashi Sakamoto u8 input_ch = parser->input_ch;
3027d843c49STakashi Sakamoto
3037d843c49STakashi Sakamoto if (parser->prev_msg_type != msg_type)
3047d843c49STakashi Sakamoto input_ch = 0;
3057d843c49STakashi Sakamoto else
3067d843c49STakashi Sakamoto ++input_ch;
3077d843c49STakashi Sakamoto
3087d843c49STakashi Sakamoto if (input_ch < SNDRV_FIREWIRE_MOTU_REGISTER_DSP_INPUT_COUNT) {
3097d843c49STakashi Sakamoto switch (msg_type) {
3107d843c49STakashi Sakamoto case INPUT_GAIN_AND_INVERT:
3114c9eda8fSTakashi Sakamoto if (param->input.gain_and_invert[input_ch] != val) {
3124c9eda8fSTakashi Sakamoto queue_event(motu, msg_type, input_ch, 0, val);
3137d843c49STakashi Sakamoto param->input.gain_and_invert[input_ch] = val;
3144c9eda8fSTakashi Sakamoto }
3157d843c49STakashi Sakamoto break;
3167d843c49STakashi Sakamoto case INPUT_FLAG:
3174c9eda8fSTakashi Sakamoto if (param->input.flag[input_ch] != val) {
3184c9eda8fSTakashi Sakamoto queue_event(motu, msg_type, input_ch, 0, val);
3197d843c49STakashi Sakamoto param->input.flag[input_ch] = val;
3204c9eda8fSTakashi Sakamoto }
3217d843c49STakashi Sakamoto break;
3227d843c49STakashi Sakamoto default:
3237d843c49STakashi Sakamoto break;
3247d843c49STakashi Sakamoto }
3257d843c49STakashi Sakamoto parser->input_ch = input_ch;
3267d843c49STakashi Sakamoto }
3277d843c49STakashi Sakamoto break;
3287d843c49STakashi Sakamoto }
3297d843c49STakashi Sakamoto case UNKNOWN_0:
3307d843c49STakashi Sakamoto case UNKNOWN_2:
3317d843c49STakashi Sakamoto break;
332bea36afaSTakashi Sakamoto case METER:
333bea36afaSTakashi Sakamoto {
334bea36afaSTakashi Sakamoto u8 pos;
335bea36afaSTakashi Sakamoto
336bea36afaSTakashi Sakamoto if (!meter_pos_quirk)
337bea36afaSTakashi Sakamoto pos = b[MSG_METER_IDX_POS];
338bea36afaSTakashi Sakamoto else
339bea36afaSTakashi Sakamoto pos = b[MSG_METER_IDX_POS_4PRE_AE];
340bea36afaSTakashi Sakamoto
3410f166e12STakashi Sakamoto if (pos < SNDRV_FIREWIRE_MOTU_REGISTER_DSP_METER_INPUT_COUNT) {
342bea36afaSTakashi Sakamoto parser->meter.data[pos] = val;
3430f166e12STakashi Sakamoto } else if (pos >= 0x80) {
3440f166e12STakashi Sakamoto pos -= (0x80 - SNDRV_FIREWIRE_MOTU_REGISTER_DSP_METER_INPUT_COUNT);
3450f166e12STakashi Sakamoto
3460f166e12STakashi Sakamoto if (pos < SNDRV_FIREWIRE_MOTU_REGISTER_DSP_METER_COUNT)
3470f166e12STakashi Sakamoto parser->meter.data[pos] = val;
3480f166e12STakashi Sakamoto }
3490f166e12STakashi Sakamoto
3507d843c49STakashi Sakamoto // The message for meter is interruptible to the series of other
3517d843c49STakashi Sakamoto // types of messages. Don't cache it.
3527d843c49STakashi Sakamoto fallthrough;
353bea36afaSTakashi Sakamoto }
3547d843c49STakashi Sakamoto case INVALID:
355bea36afaSTakashi Sakamoto default:
3567d843c49STakashi Sakamoto // Don't cache it.
3577d843c49STakashi Sakamoto continue;
358bea36afaSTakashi Sakamoto }
3597d843c49STakashi Sakamoto
3607d843c49STakashi Sakamoto parser->prev_msg_type = msg_type;
361bea36afaSTakashi Sakamoto }
362bea36afaSTakashi Sakamoto }
36358b62ab7STakashi Sakamoto
364634ec0b2STakashi Sakamoto if (pos != parser->push_pos)
365634ec0b2STakashi Sakamoto wake_up(&motu->hwdep_wait);
366634ec0b2STakashi Sakamoto
36758b62ab7STakashi Sakamoto spin_unlock_irqrestore(&parser->lock, flags);
36858b62ab7STakashi Sakamoto }
36958b62ab7STakashi Sakamoto
snd_motu_register_dsp_message_parser_copy_meter(struct snd_motu * motu,struct snd_firewire_motu_register_dsp_meter * meter)37058b62ab7STakashi Sakamoto void snd_motu_register_dsp_message_parser_copy_meter(struct snd_motu *motu,
37158b62ab7STakashi Sakamoto struct snd_firewire_motu_register_dsp_meter *meter)
37258b62ab7STakashi Sakamoto {
37358b62ab7STakashi Sakamoto struct msg_parser *parser = motu->message_parser;
37458b62ab7STakashi Sakamoto unsigned long flags;
37558b62ab7STakashi Sakamoto
37658b62ab7STakashi Sakamoto spin_lock_irqsave(&parser->lock, flags);
37758b62ab7STakashi Sakamoto memcpy(meter, &parser->meter, sizeof(*meter));
37858b62ab7STakashi Sakamoto spin_unlock_irqrestore(&parser->lock, flags);
379bea36afaSTakashi Sakamoto }
380ca15a09cSTakashi Sakamoto
snd_motu_register_dsp_message_parser_copy_parameter(struct snd_motu * motu,struct snd_firewire_motu_register_dsp_parameter * param)381ca15a09cSTakashi Sakamoto void snd_motu_register_dsp_message_parser_copy_parameter(struct snd_motu *motu,
382ca15a09cSTakashi Sakamoto struct snd_firewire_motu_register_dsp_parameter *param)
383ca15a09cSTakashi Sakamoto {
384ca15a09cSTakashi Sakamoto struct msg_parser *parser = motu->message_parser;
385ca15a09cSTakashi Sakamoto unsigned long flags;
386ca15a09cSTakashi Sakamoto
387ca15a09cSTakashi Sakamoto spin_lock_irqsave(&parser->lock, flags);
388ca15a09cSTakashi Sakamoto memcpy(param, &parser->param, sizeof(*param));
389ca15a09cSTakashi Sakamoto spin_unlock_irqrestore(&parser->lock, flags);
390ca15a09cSTakashi Sakamoto }
391634ec0b2STakashi Sakamoto
snd_motu_register_dsp_message_parser_count_event(struct snd_motu * motu)392634ec0b2STakashi Sakamoto unsigned int snd_motu_register_dsp_message_parser_count_event(struct snd_motu *motu)
393634ec0b2STakashi Sakamoto {
394634ec0b2STakashi Sakamoto struct msg_parser *parser = motu->message_parser;
395634ec0b2STakashi Sakamoto
396634ec0b2STakashi Sakamoto if (parser->pull_pos > parser->push_pos)
397634ec0b2STakashi Sakamoto return EVENT_QUEUE_SIZE - parser->pull_pos + parser->push_pos;
398634ec0b2STakashi Sakamoto else
399634ec0b2STakashi Sakamoto return parser->push_pos - parser->pull_pos;
400634ec0b2STakashi Sakamoto }
401634ec0b2STakashi Sakamoto
snd_motu_register_dsp_message_parser_copy_event(struct snd_motu * motu,u32 * event)402634ec0b2STakashi Sakamoto bool snd_motu_register_dsp_message_parser_copy_event(struct snd_motu *motu, u32 *event)
403634ec0b2STakashi Sakamoto {
404634ec0b2STakashi Sakamoto struct msg_parser *parser = motu->message_parser;
405634ec0b2STakashi Sakamoto unsigned int pos = parser->pull_pos;
406634ec0b2STakashi Sakamoto unsigned long flags;
407634ec0b2STakashi Sakamoto
408634ec0b2STakashi Sakamoto if (pos == parser->push_pos)
409634ec0b2STakashi Sakamoto return false;
410634ec0b2STakashi Sakamoto
411634ec0b2STakashi Sakamoto spin_lock_irqsave(&parser->lock, flags);
412634ec0b2STakashi Sakamoto
413634ec0b2STakashi Sakamoto *event = parser->event_queue[pos];
414634ec0b2STakashi Sakamoto
415634ec0b2STakashi Sakamoto ++pos;
416634ec0b2STakashi Sakamoto if (pos >= EVENT_QUEUE_SIZE)
417634ec0b2STakashi Sakamoto pos = 0;
418634ec0b2STakashi Sakamoto parser->pull_pos = pos;
419634ec0b2STakashi Sakamoto
420634ec0b2STakashi Sakamoto spin_unlock_irqrestore(&parser->lock, flags);
421634ec0b2STakashi Sakamoto
422634ec0b2STakashi Sakamoto return true;
423634ec0b2STakashi Sakamoto }
424