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/* |
#define __NO_VERSION__ |
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* Copyright (c) by Jaroslav Kysela <perex@suse.cz> |
#include "../../alsa-kernel/pci/au88x0/au88x0_mpu401.c" |
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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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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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* |
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*/ |
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#include <sound/driver.h> |
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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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int __devinit snd_vortex_midi(vortex_t *vortex) { |
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snd_rawmidi_t *rmidi; |
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int temp, mode; |
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mpu401_t *mpu; |
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int port; |
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#ifdef VORTEX_MPU401_LEGACY |
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/* EnableHardCodedMPU401Port() */ |
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port = (0x03 << 5); /* FIXME: static address. 0x330,0x331 */ |
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temp = (hwread(vortex->mmio, VORTEX_CTRL) & ~CTRL_MIDI_PORT) | CTRL_MIDI_EN | port; |
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hwwrite(vortex->mmio, VORTEX_CTRL, temp); |
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#else |
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/* Enable MIDI Interface. */ |
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temp = (hwread(vortex->mmio, VORTEX_CTRL) & ~CTRL_MIDI_PORT) | 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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/* Set some kind of mode */ |
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if (mode) |
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hwwrite(vortex->mmio, VORTEX_MIDI_CMD, MPU401_ENTER_UART); |
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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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printk(KERN_ERR "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, 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 = snd_mpu401_uart_new(vortex->card, 0, MPU401_HW_MPU401, 0x330, 0, 0, 0, &rmidi)) != 0) { |
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hwwrite(vortex->mmio, VORTEX_CTRL, (hwread(vortex->mmio, VORTEX_CTRL) & ~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 >> 2)); |
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if ((temp = snd_mpu401_uart_new(vortex->card, 0, MPU401_HW_AUREAL, port, 1, 0, 0, &rmidi)) != 0) { |
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hwwrite(vortex->mmio, VORTEX_CTRL, (hwread(vortex->mmio, VORTEX_CTRL) & ~CTRL_MIDI_PORT) & ~CTRL_MIDI_EN); |
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return temp; |
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} |
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mpu = snd_magic_cast(mpu401_t, rmidi->private_data, return -ENOMEM); |
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mpu->cport = (unsigned long)(vortex->mmio + (VORTEX_MIDI_CMD >> 2)); |
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#endif |
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vortex->rmidi = rmidi; |
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return 0; |
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} |
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