[net-next-2.6.git] / sound / pci / au88x0 / au88x0_mpu401.c

/*
 *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
 *  Routines for control of MPU-401 in UART mode
 *
 *   Modified for the Aureal Vortex based Soundcards
 *   by Manuel Jander (mjande@embedded.cl).
 *
 *   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
 *
 */

#include <sound/driver.h>
#include <linux/time.h>
#include <linux/init.h>
#include <sound/core.h>
#include <sound/mpu401.h>
#include "au88x0.h"

/* Check for mpu401 mmio support. */
/* MPU401 legacy support is only provided as a emergency fallback *
 * for older versions of ALSA. Its usage is strongly discouraged. */
#ifndef MPU401_HW_AUREAL
#define VORTEX_MPU401_LEGACY
#endif

/* Vortex MPU401 defines. */
#define MIDI_CLOCK_DIV      0x61
/* Standart MPU401 defines. */
#define MPU401_RESET		0xff
#define MPU401_ENTER_UART	0x3f
#define MPU401_ACK		    0xfe

static int __devinit snd_vortex_midi(vortex_t * vortex)
{
	struct snd_rawmidi *rmidi;
	int temp, mode;
	struct snd_mpu401 *mpu;
	unsigned long port;

#ifdef VORTEX_MPU401_LEGACY
	/* EnableHardCodedMPU401Port() */
	/* Enable Legacy MIDI Interface port. */
	port = (0x03 << 5);	/* FIXME: static address. 0x330 */
	temp =
	    (hwread(vortex->mmio, VORTEX_CTRL) & ~CTRL_MIDI_PORT) |
	    CTRL_MIDI_EN | port;
	hwwrite(vortex->mmio, VORTEX_CTRL, temp);
#else
	/* Disable Legacy MIDI Interface port. */
	temp =
	    (hwread(vortex->mmio, VORTEX_CTRL) & ~CTRL_MIDI_PORT) &
	    ~CTRL_MIDI_EN;
	hwwrite(vortex->mmio, VORTEX_CTRL, temp);
#endif
	/* Mpu401UartInit() */
	mode = 1;
	temp = hwread(vortex->mmio, VORTEX_CTRL2) & 0xffff00cf;
	temp |= (MIDI_CLOCK_DIV << 8) | ((mode >> 24) & 0xff) << 4;
	hwwrite(vortex->mmio, VORTEX_CTRL2, temp);
	hwwrite(vortex->mmio, VORTEX_MIDI_CMD, MPU401_RESET);

	/* Check if anything is OK. */
	temp = hwread(vortex->mmio, VORTEX_MIDI_DATA);
	if (temp != MPU401_ACK /*0xfe */ ) {
		printk(KERN_ERR "midi port doesn't acknowledge!\n");
		return -ENODEV;
	}
	/* Enable MPU401 interrupts. */
	hwwrite(vortex->mmio, VORTEX_IRQ_CTRL,
		hwread(vortex->mmio, VORTEX_IRQ_CTRL) | IRQ_MIDI);

	/* Create MPU401 instance. */
#ifdef VORTEX_MPU401_LEGACY
	if ((temp =
	     snd_mpu401_uart_new(vortex->card, 0, MPU401_HW_MPU401, 0x330,
				 0, 0, 0, &rmidi)) != 0) {
		hwwrite(vortex->mmio, VORTEX_CTRL,
			(hwread(vortex->mmio, VORTEX_CTRL) &
			 ~CTRL_MIDI_PORT) & ~CTRL_MIDI_EN);
		return temp;
	}
#else
	port = (unsigned long)(vortex->mmio + VORTEX_MIDI_DATA);
	if ((temp =
	     snd_mpu401_uart_new(vortex->card, 0, MPU401_HW_AUREAL, port,
				 MPU401_INFO_INTEGRATED | MPU401_INFO_MMIO,
				 0, 0, &rmidi)) != 0) {
		hwwrite(vortex->mmio, VORTEX_CTRL,
			(hwread(vortex->mmio, VORTEX_CTRL) &
			 ~CTRL_MIDI_PORT) & ~CTRL_MIDI_EN);
		return temp;
	}
	mpu = rmidi->private_data;
	mpu->cport = (unsigned long)(vortex->mmio + VORTEX_MIDI_CMD);
#endif
	/* Overwrite MIDI name */
	snprintf(rmidi->name, sizeof(rmidi->name), "%s MIDI %d", CARD_NAME_SHORT , vortex->card->number);

	vortex->rmidi = rmidi;
	return 0;
}
Commit	Line	Data
1da177e4	1	/*
c1017a4c	2	* Copyright (c) by Jaroslav Kysela <perex@perex.cz>
1da177e4 LT	3	* Routines for control of MPU-401 in UART mode
	4	*
	5	* Modified for the Aureal Vortex based Soundcards
	6	* by Manuel Jander (mjande@embedded.cl).
	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License as published by
	10	* the Free Software Foundation; either version 2 of the License, or
	11	* (at your option) any later version.
	12	*
	13	* This program is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	* GNU General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License
	19	* along with this program; if not, write to the Free Software
	20	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	21	*
	22	*/
	23
	24	#include <sound/driver.h>
	25	#include <linux/time.h>
	26	#include <linux/init.h>
	27	#include <sound/core.h>
	28	#include <sound/mpu401.h>
	29	#include "au88x0.h"
	30
	31	/* Check for mpu401 mmio support. */
	32	/* MPU401 legacy support is only provided as a emergency fallback *
	33	* for older versions of ALSA. Its usage is strongly discouraged. */
	34	#ifndef MPU401_HW_AUREAL
	35	#define VORTEX_MPU401_LEGACY
	36	#endif
	37
	38	/* Vortex MPU401 defines. */
	39	#define MIDI_CLOCK_DIV 0x61
	40	/* Standart MPU401 defines. */
	41	#define MPU401_RESET 0xff
	42	#define MPU401_ENTER_UART 0x3f
	43	#define MPU401_ACK 0xfe
	44
	45	static int __devinit snd_vortex_midi(vortex_t * vortex)
	46	{
2fd16874	47	struct snd_rawmidi *rmidi;
1da177e4	48	int temp, mode;
2fd16874	49	struct snd_mpu401 *mpu;
d5a31b8b	50	unsigned long port;
1da177e4 LT	51
	52	#ifdef VORTEX_MPU401_LEGACY
	53	/* EnableHardCodedMPU401Port() */
	54	/* Enable Legacy MIDI Interface port. */
	55	port = (0x03 << 5); /* FIXME: static address. 0x330 */
	56	temp =
	57	(hwread(vortex->mmio, VORTEX_CTRL) & ~CTRL_MIDI_PORT) \|
	58	CTRL_MIDI_EN \| port;
	59	hwwrite(vortex->mmio, VORTEX_CTRL, temp);
	60	#else
	61	/* Disable Legacy MIDI Interface port. */
	62	temp =
	63	(hwread(vortex->mmio, VORTEX_CTRL) & ~CTRL_MIDI_PORT) &
	64	~CTRL_MIDI_EN;
	65	hwwrite(vortex->mmio, VORTEX_CTRL, temp);
	66	#endif
	67	/* Mpu401UartInit() */
	68	mode = 1;
	69	temp = hwread(vortex->mmio, VORTEX_CTRL2) & 0xffff00cf;
	70	temp \|= (MIDI_CLOCK_DIV << 8) \| ((mode >> 24) & 0xff) << 4;
	71	hwwrite(vortex->mmio, VORTEX_CTRL2, temp);
	72	hwwrite(vortex->mmio, VORTEX_MIDI_CMD, MPU401_RESET);
1da177e4 LT	73
	74	/* Check if anything is OK. */
	75	temp = hwread(vortex->mmio, VORTEX_MIDI_DATA);
	76	if (temp != MPU401_ACK /0xfe / ) {
	77	printk(KERN_ERR "midi port doesn't acknowledge!\n");
	78	return -ENODEV;
	79	}
	80	/* Enable MPU401 interrupts. */
	81	hwwrite(vortex->mmio, VORTEX_IRQ_CTRL,
	82	hwread(vortex->mmio, VORTEX_IRQ_CTRL) \| IRQ_MIDI);
	83
	84	/* Create MPU401 instance. */
	85	#ifdef VORTEX_MPU401_LEGACY
	86	if ((temp =
	87	snd_mpu401_uart_new(vortex->card, 0, MPU401_HW_MPU401, 0x330,
	88	0, 0, 0, &rmidi)) != 0) {
	89	hwwrite(vortex->mmio, VORTEX_CTRL,
	90	(hwread(vortex->mmio, VORTEX_CTRL) &
	91	~CTRL_MIDI_PORT) & ~CTRL_MIDI_EN);
	92	return temp;
	93	}
	94	#else
97c67b65	95	port = (unsigned long)(vortex->mmio + VORTEX_MIDI_DATA);
1da177e4 LT	96	if ((temp =
1da177e4 LT	97	snd_mpu401_uart_new(vortex->card, 0, MPU401_HW_AUREAL, port,
302e4c2f TI	98	MPU401_INFO_INTEGRATED \| MPU401_INFO_MMIO,
302e4c2f TI	99	0, 0, &rmidi)) != 0) {
1da177e4 LT	100	hwwrite(vortex->mmio, VORTEX_CTRL,
	101	(hwread(vortex->mmio, VORTEX_CTRL) &
	102	~CTRL_MIDI_PORT) & ~CTRL_MIDI_EN);
	103	return temp;
	104	}
	105	mpu = rmidi->private_data;
97c67b65	106	mpu->cport = (unsigned long)(vortex->mmio + VORTEX_MIDI_CMD);
1da177e4	107	#endif
520290e4 AH	108	/* Overwrite MIDI name */
	109	snprintf(rmidi->name, sizeof(rmidi->name), "%s MIDI %d", CARD_NAME_SHORT , vortex->card->number);
	110
1da177e4 LT	111	vortex->rmidi = rmidi;
	112	return 0;
	113	}