5  *  Routines for control of MPU-401 in UART mode
7  *  MPU-401 supports UART mode which is not capable generate transmit
43 	struct snd_msndmidi *mpu;  in snd_msndmidi_input_open()  local
45 	mpu = substream->rmidi->private_data;  in snd_msndmidi_input_open()
47 	mpu->substream_input = substream;  in snd_msndmidi_input_open()
49 	snd_msnd_enable_irq(mpu->dev);  in snd_msndmidi_input_open()
51 	snd_msnd_send_dsp_cmd(mpu->dev, HDEX_MIDI_IN_START);  in snd_msndmidi_input_open()
52 	set_bit(MSNDMIDI_MODE_BIT_INPUT, &mpu->mode);  in snd_msndmidi_input_open()
58 	struct snd_msndmidi *mpu;  in snd_msndmidi_input_close()  local
60 	mpu = substream->rmidi->private_data;  in snd_msndmidi_input_close()
61 	snd_msnd_send_dsp_cmd(mpu->dev, HDEX_MIDI_IN_STOP);  in snd_msndmidi_input_close()
62 	clear_bit(MSNDMIDI_MODE_BIT_INPUT, &mpu->mode);  in snd_msndmidi_input_close()
63 	mpu->substream_input = NULL;  in snd_msndmidi_input_close()
64 	snd_msnd_disable_irq(mpu->dev);  in snd_msndmidi_input_close()
68 static void snd_msndmidi_input_drop(struct snd_msndmidi *mpu)  in snd_msndmidi_input_drop()  argument
72 	tail = readw(mpu->dev->MIDQ + JQS_wTail);  in snd_msndmidi_input_drop()
73 	writew(tail, mpu->dev->MIDQ + JQS_wHead);  in snd_msndmidi_input_drop()
83 	struct snd_msndmidi *mpu;  in snd_msndmidi_input_trigger()  local
85 	mpu = substream->rmidi->private_data;  in snd_msndmidi_input_trigger()
86 	spin_lock_irqsave(&mpu->input_lock, flags);  in snd_msndmidi_input_trigger()
89 				      &mpu->mode))  in snd_msndmidi_input_trigger()
90 			snd_msndmidi_input_drop(mpu);  in snd_msndmidi_input_trigger()
92 		clear_bit(MSNDMIDI_MODE_BIT_INPUT_TRIGGER, &mpu->mode);  in snd_msndmidi_input_trigger()
94 	spin_unlock_irqrestore(&mpu->input_lock, flags);  in snd_msndmidi_input_trigger()
96 		snd_msndmidi_input_read(mpu);  in snd_msndmidi_input_trigger()
102 	struct snd_msndmidi *mpu = mpuv;  in snd_msndmidi_input_read()  local
103 	void __iomem *pwMIDQData = mpu->dev->mappedbase + MIDQ_DATA_BUFF;  in snd_msndmidi_input_read()
106 	spin_lock_irqsave(&mpu->input_lock, flags);  in snd_msndmidi_input_read()
107 	head = readw(mpu->dev->MIDQ + JQS_wHead);  in snd_msndmidi_input_read()
108 	tail = readw(mpu->dev->MIDQ + JQS_wTail);  in snd_msndmidi_input_read()
109 	size = readw(mpu->dev->MIDQ + JQS_wSize);  in snd_msndmidi_input_read()
115 		if (test_bit(MSNDMIDI_MODE_BIT_INPUT_TRIGGER, &mpu->mode))  in snd_msndmidi_input_read()
116 			snd_rawmidi_receive(mpu->substream_input, &val, 1);  in snd_msndmidi_input_read()
119 		writew(head, mpu->dev->MIDQ + JQS_wHead);  in snd_msndmidi_input_read()
122 	spin_unlock_irqrestore(&mpu->input_lock, flags);  in snd_msndmidi_input_read()
134 	struct snd_msndmidi *mpu = rmidi->private_data;  in snd_msndmidi_free()  local
135 	kfree(mpu);  in snd_msndmidi_free()
141 	struct snd_msndmidi *mpu;  in snd_msndmidi_new()  local
148 	mpu = kzalloc(sizeof(*mpu), GFP_KERNEL);  in snd_msndmidi_new()
149 	if (mpu == NULL) {  in snd_msndmidi_new()
153 	mpu->dev = chip;  in snd_msndmidi_new()
154 	chip->msndmidi_mpu = mpu;  in snd_msndmidi_new()
155 	rmidi->private_data = mpu;  in snd_msndmidi_new()
157 	spin_lock_init(&mpu->input_lock);  in snd_msndmidi_new()