/*
* PMac DBDMA lowlevel functions
*
* Copyright (c) by Takashi Iwai <tiwai@suse.de>
* code based on dmasound.c.
*
* 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 <asm/io.h>
#include <asm/irq.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <sound/core.h>
#include "pmac.h"
#include <sound/pcm_params.h>
#ifdef CONFIG_PPC_HAS_FEATURE_CALLS
#include <asm/pmac_feature.h>
#else
#include <asm/feature.h>
#endif
#if defined(CONFIG_PM) && defined(CONFIG_PMAC_PBOOK)
static int snd_pmac_register_sleep_notifier(pmac_t *chip);
static int snd_pmac_unregister_sleep_notifier(pmac_t *chip);
static int snd_pmac_suspend(snd_card_t *card, pm_message_t state);
static int snd_pmac_resume(snd_card_t *card);
#endif
/* fixed frequency table for awacs, screamer, burgundy, DACA (44100 max) */
static int awacs_freqs[8] = {
44100, 29400, 22050, 17640, 14700, 11025, 8820, 7350
};
/* fixed frequency table for tumbler */
static int tumbler_freqs[1] = {
44100
};
/*
* allocate DBDMA command arrays
*/
static int snd_pmac_dbdma_alloc(pmac_dbdma_t *rec, int size)
{
rec->space = kmalloc(sizeof(struct dbdma_cmd) * (size + 1), GFP_KERNEL);
if (rec->space == NULL)
return -ENOMEM;
rec->size = size;
memset(rec->space, 0, sizeof(struct dbdma_cmd) * (size + 1));
rec->cmds = (void __iomem *)DBDMA_ALIGN(rec->space);
rec->addr = virt_to_bus(rec->cmds);
return 0;
}
static void snd_pmac_dbdma_free(pmac_dbdma_t *rec)
{
if (rec)
kfree(rec->space);
}
/*
* pcm stuff
*/
/*
* look up frequency table
*/
unsigned int snd_pmac_rate_index(pmac_t *chip, pmac_stream_t *rec, unsigned int rate)
{
int i, ok, found;</