Lines Matching refs:chip
37 static int enable_midi_input(struct echoaudio *chip, char enable)
39 dev_dbg(chip->card->dev, "enable_midi_input(%d)\n", enable);
41 if (wait_handshake(chip))
45 chip->mtc_state = MIDI_IN_STATE_NORMAL;
46 chip->comm_page->flags |=
49 chip->comm_page->flags &=
52 clear_handshake(chip);
53 return send_vector(chip, DSP_VC_UPDATE_FLAGS);
60 static int write_midi(struct echoaudio *chip, u8 *data, int bytes)
65 if (wait_handshake(chip))
69 if (! (get_dsp_register(chip, CHI32_STATUS_REG) & CHI32_STATUS_REG_HF4))
72 chip->comm_page->midi_output[0] = bytes;
73 memcpy(&chip->comm_page->midi_output[1], data, bytes);
74 chip->comm_page->midi_out_free_count = 0;
75 clear_handshake(chip);
76 send_vector(chip, DSP_VC_MIDI_WRITE);
77 dev_dbg(chip->card->dev, "write_midi: %d\n", bytes);
90 static inline int mtc_process_data(struct echoaudio *chip, short midi_byte)
92 switch (chip->mtc_state) {
95 chip->mtc_state = MIDI_IN_STATE_TS_HIGH;
98 chip->mtc_state = MIDI_IN_STATE_TS_LOW;
102 chip->mtc_state = MIDI_IN_STATE_F1_DATA;
106 chip->mtc_state = MIDI_IN_STATE_NORMAL;
116 static int midi_service_irq(struct echoaudio *chip)
121 count = le16_to_cpu(chip->comm_page->midi_input[0]);
131 midi_byte = le16_to_cpu(chip->comm_page->midi_input[i]);
139 if (mtc_process_data(chip, midi_byte) == MIDI_IN_SKIP_DATA)
142 chip->midi_buffer[received++] = (u8)midi_byte;
157 struct echoaudio *chip = substream->rmidi->private_data;
159 chip->midi_in = substream;
168 struct echoaudio *chip = substream->rmidi->private_data;
170 if (up != chip->midi_input_enabled) {
171 spin_lock_irq(&chip->lock);
172 enable_midi_input(chip, up);
173 spin_unlock_irq(&chip->lock);
174 chip->midi_input_enabled = up;
182 struct echoaudio *chip = substream->rmidi->private_data;
184 chip->midi_in = NULL;
192 struct echoaudio *chip = substream->rmidi->private_data;
194 chip->tinuse = 0;
195 chip->midi_full = 0;
196 chip->midi_out = substream;
204 struct echoaudio *chip = from_timer(chip, t, timer);
212 spin_lock_irqsave(&chip->lock, flags);
213 chip->midi_full = 0;
214 if (!snd_rawmidi_transmit_empty(chip->midi_out)) {
215 bytes = snd_rawmidi_transmit_peek(chip->midi_out, buf,
217 dev_dbg(chip->card->dev, "Try to send %d bytes...\n", bytes);
218 sent = write_midi(chip, buf, bytes);
220 dev_err(chip->card->dev,
224 chip->midi_full = 1;
226 dev_dbg(chip->card->dev, "%d bytes sent\n", sent);
227 snd_rawmidi_transmit_ack(chip->midi_out, sent);
231 dev_dbg(chip->card->dev, "Full\n");
233 chip->midi_full = 1;
238 if (!snd_rawmidi_transmit_empty(chip->midi_out) && chip->tinuse) {
242 mod_timer(&chip->timer, jiffies + (time * HZ + 999) / 1000);
243 dev_dbg(chip->card->dev,
246 spin_unlock_irqrestore(&chip->lock, flags);
254 struct echoaudio *chip = substream->rmidi->private_data;
256 dev_dbg(chip->card->dev, "snd_echo_midi_output_trigger(%d)\n", up);
257 spin_lock_irq(&chip->lock);
259 if (!chip->tinuse) {
260 timer_setup(&chip->timer, snd_echo_midi_output_write,
262 chip->tinuse = 1;
265 if (chip->tinuse) {
266 chip->tinuse = 0;
267 spin_unlock_irq(&chip->lock);
268 del_timer_sync(&chip->timer);
269 dev_dbg(chip->card->dev, "Timer removed\n");
273 spin_unlock_irq(&chip->lock);
275 if (up && !chip->midi_full)
276 snd_echo_midi_output_write(&chip->timer);
283 struct echoaudio *chip = substream->rmidi->private_data;
285 chip->midi_out = NULL;
307 struct echoaudio *chip)
312 &chip->rmidi)) < 0)
315 strcpy(chip->rmidi->name, card->shortname);
316 chip->rmidi->private_data = chip;
318 snd_rawmidi_set_ops(chip->rmidi, SNDRV_RAWMIDI_STREAM_INPUT,
320 snd_rawmidi_set_ops(chip->rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT,
323 chip->rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT |