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1a59d1b8e0
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 59 temple place suite 330 boston ma 02111 1307 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1334 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
99 lines
2.9 KiB
C
99 lines
2.9 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) by Jaroslav Kysela <perex@perex.cz>
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* Routines for control of MPU-401 in UART mode
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*
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* Modified for the Aureal Vortex based Soundcards
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* by Manuel Jander (mjande@embedded.cl).
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*/
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#include <linux/time.h>
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#include <linux/init.h>
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#include <sound/core.h>
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#include <sound/mpu401.h>
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#include "au88x0.h"
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/* Check for mpu401 mmio support. */
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/* MPU401 legacy support is only provided as a emergency fallback *
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* for older versions of ALSA. Its usage is strongly discouraged. */
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#ifndef MPU401_HW_AUREAL
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#define VORTEX_MPU401_LEGACY
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#endif
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/* Vortex MPU401 defines. */
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#define MIDI_CLOCK_DIV 0x61
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/* Standart MPU401 defines. */
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#define MPU401_RESET 0xff
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#define MPU401_ENTER_UART 0x3f
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#define MPU401_ACK 0xfe
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static int snd_vortex_midi(vortex_t *vortex)
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{
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struct snd_rawmidi *rmidi;
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int temp, mode;
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struct snd_mpu401 *mpu;
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unsigned long port;
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#ifdef VORTEX_MPU401_LEGACY
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/* EnableHardCodedMPU401Port() */
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/* Enable Legacy MIDI Interface port. */
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port = (0x03 << 5); /* FIXME: static address. 0x330 */
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temp =
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(hwread(vortex->mmio, VORTEX_CTRL) & ~CTRL_MIDI_PORT) |
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CTRL_MIDI_EN | port;
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hwwrite(vortex->mmio, VORTEX_CTRL, temp);
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#else
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/* Disable Legacy MIDI Interface port. */
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temp =
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(hwread(vortex->mmio, VORTEX_CTRL) & ~CTRL_MIDI_PORT) &
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~CTRL_MIDI_EN;
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hwwrite(vortex->mmio, VORTEX_CTRL, temp);
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#endif
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/* Mpu401UartInit() */
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mode = 1;
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temp = hwread(vortex->mmio, VORTEX_CTRL2) & 0xffff00cf;
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temp |= (MIDI_CLOCK_DIV << 8) | ((mode >> 24) & 0xff) << 4;
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hwwrite(vortex->mmio, VORTEX_CTRL2, temp);
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hwwrite(vortex->mmio, VORTEX_MIDI_CMD, MPU401_RESET);
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/* Check if anything is OK. */
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temp = hwread(vortex->mmio, VORTEX_MIDI_DATA);
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if (temp != MPU401_ACK /*0xfe */ ) {
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dev_err(vortex->card->dev, "midi port doesn't acknowledge!\n");
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return -ENODEV;
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}
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/* Enable MPU401 interrupts. */
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hwwrite(vortex->mmio, VORTEX_IRQ_CTRL,
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hwread(vortex->mmio, VORTEX_IRQ_CTRL) | IRQ_MIDI);
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/* Create MPU401 instance. */
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#ifdef VORTEX_MPU401_LEGACY
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if ((temp =
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snd_mpu401_uart_new(vortex->card, 0, MPU401_HW_MPU401, 0x330,
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MPU401_INFO_IRQ_HOOK, -1, &rmidi)) != 0) {
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hwwrite(vortex->mmio, VORTEX_CTRL,
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(hwread(vortex->mmio, VORTEX_CTRL) &
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~CTRL_MIDI_PORT) & ~CTRL_MIDI_EN);
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return temp;
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}
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#else
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port = (unsigned long)(vortex->mmio + VORTEX_MIDI_DATA);
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if ((temp =
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snd_mpu401_uart_new(vortex->card, 0, MPU401_HW_AUREAL, port,
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MPU401_INFO_INTEGRATED | MPU401_INFO_MMIO |
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MPU401_INFO_IRQ_HOOK, -1, &rmidi)) != 0) {
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hwwrite(vortex->mmio, VORTEX_CTRL,
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(hwread(vortex->mmio, VORTEX_CTRL) &
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~CTRL_MIDI_PORT) & ~CTRL_MIDI_EN);
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return temp;
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}
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mpu = rmidi->private_data;
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mpu->cport = (unsigned long)(vortex->mmio + VORTEX_MIDI_CMD);
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#endif
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/* Overwrite MIDI name */
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snprintf(rmidi->name, sizeof(rmidi->name), "%s MIDI %d", CARD_NAME_SHORT , vortex->card->number);
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vortex->rmidi = rmidi;
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return 0;
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}
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