pci/emu10k1/emumpu401.c

62 static void do_emu10k1_midi_interrupt(struct snd_emu10k1 *emu, struct snd_emu10k1_midi *midi, unsigned int status)
66 	if (midi->rmidi == NULL) {
67 		snd_emu10k1_intr_disable(emu, midi->tx_enable | midi->rx_enable);
71 	spin_lock(&midi->input_lock);
72 	if ((status & midi->ipr_rx) && mpu401_input_avail(emu, midi)) {
73 		if (!(midi->midi_mode & EMU10K1_MIDI_MODE_INPUT)) {
74 			mpu401_clear_rx(emu, midi);
76 			byte = mpu401_read_data(emu, midi);
77 			if (midi->substream_input)
78 				snd_rawmidi_receive(midi->substream_input, &byte, 1);
81 	spin_unlock(&midi->input_lock);
83 	spin_lock(&midi->output_lock);
84 	if ((status & midi->ipr_tx) && mpu401_output_ready(emu, midi)) {
85 		if (midi->substream_output &&
86 		    snd_rawmidi_transmit(midi->substream_output, &byte, 1) == 1) {
87 			mpu401_write_data(emu, midi, byte);
89 			snd_emu10k1_intr_disable(emu, midi->tx_enable);
92 	spin_unlock(&midi->output_lock);
97 	do_emu10k1_midi_interrupt(emu, &emu->midi, status);
105 static int snd_emu10k1_midi_cmd(struct snd_emu10k1 * emu, struct snd_emu10k1_midi *midi, unsigned char cmd, int ack)
109 	spin_lock_irq(&midi->input_lock);
110 	mpu401_write_data(emu, midi, 0x00);
111 	/* mpu401_clear_rx(emu, midi); */
113 	mpu401_write_cmd(emu, midi, cmd);
118 			if (mpu401_input_avail(emu, midi)) {
119 				if (mpu401_read_data(emu, midi) == MPU401_ACK)
123 		if (!ok && mpu401_read_data(emu, midi) == MPU401_ACK)
128 	spin_unlock_irq(&midi->input_lock);
133 			   mpu401_read_stat(emu, midi),
134 			   mpu401_read_data(emu, midi));
143 	struct snd_emu10k1_midi *midi = (struct snd_emu10k1_midi *)substream->rmidi->private_data;
145 	emu = midi->emu;
148 	spin_lock_irq(&midi->open_lock);
149 	midi->midi_mode |= EMU10K1_MIDI_MODE_INPUT;
150 	midi->substream_input = substream;
151 	if (!(midi->midi_mode & EMU10K1_MIDI_MODE_OUTPUT)) {
152 		spin_unlock_irq(&midi->open_lock);
153 		if (snd_emu10k1_midi_cmd(emu, midi, MPU401_RESET, 1))
155 		if (snd_emu10k1_midi_cmd(emu, midi, MPU401_ENTER_UART, 1))
158 		spin_unlock_irq(&midi->open_lock);
169 	struct snd_emu10k1_midi *midi = (struct snd_emu10k1_midi *)substream->rmidi->private_data;
171 	emu = midi->emu;
174 	spin_lock_irq(&midi->open_lock);
175 	midi->midi_mode |= EMU10K1_MIDI_MODE_OUTPUT;
176 	midi->substream_output = substream;
177 	if (!(midi->midi_mode & EMU10K1_MIDI_MODE_INPUT)) {
178 		spin_unlock_irq(&midi->open_lock);
179 		if (snd_emu10k1_midi_cmd(emu, midi, MPU401_RESET, 1))
181 		if (snd_emu10k1_midi_cmd(emu, midi, MPU401_ENTER_UART, 1))
184 		spin_unlock_irq(&midi->open_lock);
195 	struct snd_emu10k1_midi *midi = (struct snd_emu10k1_midi *)substream->rmidi->private_data;
198 	emu = midi->emu;
201 	spin_lock_irq(&midi->open_lock);
202 	snd_emu10k1_intr_disable(emu, midi->rx_enable);
203 	midi->midi_mode &= ~EMU10K1_MIDI_MODE_INPUT;
204 	midi->substream_input = NULL;
205 	if (!(midi->midi_mode & EMU10K1_MIDI_MODE_OUTPUT)) {
206 		spin_unlock_irq(&midi->open_lock);
207 		err = snd_emu10k1_midi_cmd(emu, midi, MPU401_RESET, 0);
209 		spin_unlock_irq(&midi->open_lock);
217 	struct snd_emu10k1_midi *midi = (struct snd_emu10k1_midi *)substream->rmidi->private_data;
220 	emu = midi->emu;
223 	spin_lock_irq(&midi->open_lock);
224 	snd_emu10k1_intr_disable(emu, midi->tx_enable);
225 	midi->midi_mode &= ~EMU10K1_MIDI_MODE_OUTPUT;
226 	midi->substream_output = NULL;
227 	if (!(midi->midi_mode & EMU10K1_MIDI_MODE_INPUT)) {
228 		spin_unlock_irq(&midi->open_lock);
229 		err = snd_emu10k1_midi_cmd(emu, midi, MPU401_RESET, 0);
231 		spin_unlock_irq(&midi->open_lock);
239 	struct snd_emu10k1_midi *midi = (struct snd_emu10k1_midi *)substream->rmidi->private_data;
240 	emu = midi->emu;
245 		snd_emu10k1_intr_enable(emu, midi->rx_enable);
247 		snd_emu10k1_intr_disable(emu, midi->rx_enable);
253 	struct snd_emu10k1_midi *midi = (struct snd_emu10k1_midi *)substream->rmidi->private_data;
255 	emu = midi->emu;
264 		spin_lock_irq(&midi->output_lock);
266 			if (mpu401_output_ready(emu, midi)) {
267 				if (!(midi->midi_mode & EMU10K1_MIDI_MODE_OUTPUT) ||
270 					spin_unlock_irq(&midi->output_lock);
273 				mpu401_write_data(emu, midi, byte);
279 		spin_unlock_irq(&midi->output_lock);
280 		snd_emu10k1_intr_enable(emu, midi->tx_enable);
282 		snd_emu10k1_intr_disable(emu, midi->tx_enable);
306 	struct snd_emu10k1_midi *midi = rmidi->private_data;
307 	midi->interrupt = NULL;
308 	midi->rmidi = NULL;
311 static int emu10k1_midi_init(struct snd_emu10k1 *emu, struct snd_emu10k1_midi *midi, int device, char *name)
319 	midi->emu = emu;
320 	spin_lock_init(&midi->open_lock);
321 	spin_lock_init(&midi->input_lock);
322 	spin_lock_init(&midi->output_lock);
329 	rmidi->private_data = midi;
331 	midi->rmidi = rmidi;
337 	struct snd_emu10k1_midi *midi = &emu->midi;
340 	err = emu10k1_midi_init(emu, midi, 0, "EMU10K1 MPU-401 (UART)");
344 	midi->tx_enable = INTE_MIDITXENABLE;
345 	midi->rx_enable = INTE_MIDIRXENABLE;
346 	midi->port = MUDATA;
347 	midi->ipr_tx = IPR_MIDITRANSBUFEMPTY;
348 	midi->ipr_rx = IPR_MIDIRECVBUFEMPTY;
349 	midi->interrupt = snd_emu10k1_midi_interrupt;
355 	struct snd_emu10k1_midi *midi;
358 	midi = &emu->midi;
359 	err = emu10k1_midi_init(emu, midi, 0, "Audigy MPU-401 (UART)");
363 	midi->tx_enable = INTE_MIDITXENABLE;
364 	midi->rx_enable = INTE_MIDIRXENABLE;
365 	midi->port = A_MUDATA1;
366 	midi->ipr_tx = IPR_MIDITRANSBUFEMPTY;
367 	midi->ipr_rx = IPR_MIDIRECVBUFEMPTY;
368 	midi->interrupt = snd_emu10k1_midi_interrupt;
370 	midi = &emu->midi2;
371 	err = emu10k1_midi_init(emu, midi, 1, "Audigy MPU-401 #2");
375 	midi->tx_enable = INTE_A_MIDITXENABLE2;
376 	midi->rx_enable = INTE_A_MIDIRXENABLE2;
377 	midi->port = A_MUDATA2;
378 	midi->ipr_tx = IPR_A_MIDITRANSBUFEMPTY2;
379 	midi->ipr_rx = IPR_A_MIDIRECVBUFEMPTY2;
380 	midi->interrupt = snd_emu10k1_midi_interrupt2;