8  * Note that there is also an MPU-401 emulation (actually, a UART-401
25  * something other than 0 and 1 if the CS4232 UART/MPU-401 interface
115 	snd_wavefront_mpu_id  mpu;  in snd_wavefront_midi_output_write()  local
191 		mpu = midi->output_mpu ^ mask;  in snd_wavefront_midi_output_write()
193 		if ((midi->mode[mpu] & MPU401_MODE_OUTPUT) == 0) {  in snd_wavefront_midi_output_write()
197 		if (snd_rawmidi_transmit_empty(midi->substream_output[mpu]))  in snd_wavefront_midi_output_write()
200 			if (mpu != midi->output_mpu) {  in snd_wavefront_midi_output_write()
201 				write_data(midi, mpu == internal_mpu ?  in snd_wavefront_midi_output_write()
204 				midi->output_mpu = mpu;  in snd_wavefront_midi_output_write()
205 			} else if (snd_rawmidi_transmit(midi->substream_output[mpu], &midi_byte, 1) == 1) {  in snd_wavefront_midi_output_write()
217 				midi->mode[mpu] &= ~MPU401_MODE_OUTPUT_TRIGGER;  in snd_wavefront_midi_output_write()
233 	snd_wavefront_mpu_id mpu;  in snd_wavefront_midi_input_open()  local
240 	mpu = *((snd_wavefront_mpu_id *) substream->rmidi->private_data);  in snd_wavefront_midi_input_open()
246 	midi->mode[mpu] |= MPU401_MODE_INPUT;  in snd_wavefront_midi_input_open()
247 	midi->substream_input[mpu] = substream;  in snd_wavefront_midi_input_open()
257 	snd_wavefront_mpu_id mpu;  in snd_wavefront_midi_output_open()  local
264 	mpu = *((snd_wavefront_mpu_id *) substream->rmidi->private_data);  in snd_wavefront_midi_output_open()
270 	midi->mode[mpu] |= MPU401_MODE_OUTPUT;  in snd_wavefront_midi_output_open()
271 	midi->substream_output[mpu] = substream;  in snd_wavefront_midi_output_open()
281 	snd_wavefront_mpu_id mpu;  in snd_wavefront_midi_input_close()  local
288 	mpu = *((snd_wavefront_mpu_id *) substream->rmidi->private_data);  in snd_wavefront_midi_input_close()
294 	midi->mode[mpu] &= ~MPU401_MODE_INPUT;  in snd_wavefront_midi_input_close()
304 	snd_wavefront_mpu_id mpu;  in snd_wavefront_midi_output_close()  local
311 	mpu = *((snd_wavefront_mpu_id *) substream->rmidi->private_data);  in snd_wavefront_midi_output_close()
317 	midi->mode[mpu] &= ~MPU401_MODE_OUTPUT;  in snd_wavefront_midi_output_close()
326 	snd_wavefront_mpu_id mpu;  in snd_wavefront_midi_input_trigger()  local
334 	mpu = *((snd_wavefront_mpu_id *) substream->rmidi->private_data);  in snd_wavefront_midi_input_trigger()
342 		midi->mode[mpu] |= MPU401_MODE_INPUT_TRIGGER;  in snd_wavefront_midi_input_trigger()
344 		midi->mode[mpu] &= ~MPU401_MODE_INPUT_TRIGGER;  in snd_wavefront_midi_input_trigger()
365 	snd_wavefront_mpu_id mpu;  in snd_wavefront_midi_output_trigger()  local
373 	mpu = *((snd_wavefront_mpu_id *) substream->rmidi->private_data);  in snd_wavefront_midi_output_trigger()
381 		if ((midi->mode[mpu] & MPU401_MODE_OUTPUT_TRIGGER) == 0) {  in snd_wavefront_midi_output_trigger()
389 			midi->mode[mpu] |= MPU401_MODE_OUTPUT_TRIGGER;  in snd_wavefront_midi_output_trigger()
392 		midi->mode[mpu] &= ~MPU401_MODE_OUTPUT_TRIGGER;  in snd_wavefront_midi_output_trigger()
407 	static int mpu = external_mpu;   in snd_wavefront_midi_interrupt()  local
427 					mpu = external_mpu;  in snd_wavefront_midi_interrupt()
430 					mpu = internal_mpu;  in snd_wavefront_midi_interrupt()
434 				mpu = internal_mpu;  in snd_wavefront_midi_interrupt()
441 			if (midi->mode[mpu] & MPU401_MODE_INPUT_TRIGGER) {  in snd_wavefront_midi_interrupt()
491 	/* The ICS2115 MPU-401 interface doesn't do anything  in snd_wavefront_midi_start()