1 // SPDX-License-Identifier: GPL-2.0-or-later
4  *  Routines for control of MPU-401 in UART mode
17 /* MPU401 legacy support is only provided as a emergency fallback *
33 	int temp, mode;  in snd_vortex_midi()  local
39 	/* Enable Legacy MIDI Interface port. */  in snd_vortex_midi()
42 	    (hwread(vortex->mmio, VORTEX_CTRL) & ~CTRL_MIDI_PORT) |  in snd_vortex_midi()
44 	hwwrite(vortex->mmio, VORTEX_CTRL, temp);  in snd_vortex_midi()
46 	/* Disable Legacy MIDI Interface port. */  in snd_vortex_midi()
48 	    (hwread(vortex->mmio, VORTEX_CTRL) & ~CTRL_MIDI_PORT) &  in snd_vortex_midi()
50 	hwwrite(vortex->mmio, VORTEX_CTRL, temp);  in snd_vortex_midi()
53 	mode = 1;  in snd_vortex_midi()
54 	temp = hwread(vortex->mmio, VORTEX_CTRL2) & 0xffff00cf;  in snd_vortex_midi()
55 	temp |= (MIDI_CLOCK_DIV << 8) | ((mode >> 24) & 0xff) << 4;  in snd_vortex_midi()
56 	hwwrite(vortex->mmio, VORTEX_CTRL2, temp);  in snd_vortex_midi()
57 	hwwrite(vortex->mmio, VORTEX_MIDI_CMD, MPU401_RESET);  in snd_vortex_midi()
60 	temp = hwread(vortex->mmio, VORTEX_MIDI_DATA);  in snd_vortex_midi()
62 		dev_err(vortex->card->dev, "midi port doesn't acknowledge!\n");  in snd_vortex_midi()
63 		return -ENODEV;  in snd_vortex_midi()
66 	hwwrite(vortex->mmio, VORTEX_IRQ_CTRL,  in snd_vortex_midi()
67 		hwread(vortex->mmio, VORTEX_IRQ_CTRL) | IRQ_MIDI);  in snd_vortex_midi()
71 	temp = snd_mpu401_uart_new(vortex->card, 0, MPU401_HW_MPU401, 0x330,  in snd_vortex_midi()
72 				   MPU401_INFO_IRQ_HOOK, -1, &rmidi);  in snd_vortex_midi()
74 		hwwrite(vortex->mmio, VORTEX_CTRL,  in snd_vortex_midi()
75 			(hwread(vortex->mmio, VORTEX_CTRL) &  in snd_vortex_midi()
80 	port = (unsigned long)(vortex->mmio + VORTEX_MIDI_DATA);  in snd_vortex_midi()
81 	temp = snd_mpu401_uart_new(vortex->card, 0, MPU401_HW_AUREAL, port,  in snd_vortex_midi()
83 				   MPU401_INFO_IRQ_HOOK, -1, &rmidi);  in snd_vortex_midi()
85 		hwwrite(vortex->mmio, VORTEX_CTRL,  in snd_vortex_midi()
86 			(hwread(vortex->mmio, VORTEX_CTRL) &  in snd_vortex_midi()
90 	mpu = rmidi->private_data;  in snd_vortex_midi()
91 	mpu->cport = (unsigned long)(vortex->mmio + VORTEX_MIDI_CMD);  in snd_vortex_midi()
94 	snprintf(rmidi->name, sizeof(rmidi->name), "%s MIDI %d", CARD_NAME_SHORT , vortex->card->number);  in snd_vortex_midi()
96 	vortex->rmidi = rmidi;  in snd_vortex_midi()