^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Routines for control of MPU-401 in UART mode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Modified for the Aureal Vortex based Soundcards
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * by Manuel Jander (mjande@embedded.cl).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/time.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <sound/core.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <sound/mpu401.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include "au88x0.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) /* Check for mpu401 mmio support. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) /* MPU401 legacy support is only provided as a emergency fallback *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * for older versions of ALSA. Its usage is strongly discouraged. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #ifndef MPU401_HW_AUREAL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #define VORTEX_MPU401_LEGACY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) /* Vortex MPU401 defines. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define MIDI_CLOCK_DIV 0x61
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) /* Standart MPU401 defines. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #define MPU401_RESET 0xff
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #define MPU401_ENTER_UART 0x3f
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #define MPU401_ACK 0xfe
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) static int snd_vortex_midi(vortex_t *vortex)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) struct snd_rawmidi *rmidi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) int temp, mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) struct snd_mpu401 *mpu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) unsigned long port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #ifdef VORTEX_MPU401_LEGACY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) /* EnableHardCodedMPU401Port() */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) /* Enable Legacy MIDI Interface port. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) port = (0x03 << 5); /* FIXME: static address. 0x330 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) temp =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) (hwread(vortex->mmio, VORTEX_CTRL) & ~CTRL_MIDI_PORT) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) CTRL_MIDI_EN | port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) hwwrite(vortex->mmio, VORTEX_CTRL, temp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) /* Disable Legacy MIDI Interface port. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) temp =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) (hwread(vortex->mmio, VORTEX_CTRL) & ~CTRL_MIDI_PORT) &
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) ~CTRL_MIDI_EN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) hwwrite(vortex->mmio, VORTEX_CTRL, temp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) /* Mpu401UartInit() */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) mode = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) temp = hwread(vortex->mmio, VORTEX_CTRL2) & 0xffff00cf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) temp |= (MIDI_CLOCK_DIV << 8) | ((mode >> 24) & 0xff) << 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) hwwrite(vortex->mmio, VORTEX_CTRL2, temp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) hwwrite(vortex->mmio, VORTEX_MIDI_CMD, MPU401_RESET);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) /* Check if anything is OK. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) temp = hwread(vortex->mmio, VORTEX_MIDI_DATA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) if (temp != MPU401_ACK /*0xfe */ ) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) dev_err(vortex->card->dev, "midi port doesn't acknowledge!\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) /* Enable MPU401 interrupts. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) hwwrite(vortex->mmio, VORTEX_IRQ_CTRL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) hwread(vortex->mmio, VORTEX_IRQ_CTRL) | IRQ_MIDI);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) /* Create MPU401 instance. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) #ifdef VORTEX_MPU401_LEGACY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) if ((temp =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) snd_mpu401_uart_new(vortex->card, 0, MPU401_HW_MPU401, 0x330,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) MPU401_INFO_IRQ_HOOK, -1, &rmidi)) != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) hwwrite(vortex->mmio, VORTEX_CTRL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) (hwread(vortex->mmio, VORTEX_CTRL) &
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) ~CTRL_MIDI_PORT) & ~CTRL_MIDI_EN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) return temp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) port = (unsigned long)(vortex->mmio + VORTEX_MIDI_DATA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) if ((temp =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) snd_mpu401_uart_new(vortex->card, 0, MPU401_HW_AUREAL, port,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) MPU401_INFO_INTEGRATED | MPU401_INFO_MMIO |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) MPU401_INFO_IRQ_HOOK, -1, &rmidi)) != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) hwwrite(vortex->mmio, VORTEX_CTRL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) (hwread(vortex->mmio, VORTEX_CTRL) &
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) ~CTRL_MIDI_PORT) & ~CTRL_MIDI_EN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) return temp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) mpu = rmidi->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) mpu->cport = (unsigned long)(vortex->mmio + VORTEX_MIDI_CMD);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) /* Overwrite MIDI name */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) snprintf(rmidi->name, sizeof(rmidi->name), "%s MIDI %d", CARD_NAME_SHORT , vortex->card->number);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) vortex->rmidi = rmidi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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