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/*******************************************************************************
*
* "cs4281pm.c" -- Cirrus Logic-Crystal CS4281 linux audio driver.
*
* Copyright (C) 2000,2001 Cirrus Logic Corp.
* -- tom woller (twoller@crystal.cirrus.com) or
* (audio@crystal.cirrus.com).
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* 12/22/00 trw - new file.
*
*******************************************************************************/
#ifndef NOT_CS4281_PM
#include <linux/pm.h>
#define cs_pm_register(a, b, c) pm_register((a), (b), (c));
#define cs_pm_unregister_all(a) pm_unregister_all((a));
static int cs4281_suspend(struct cs4281_state *s);
static int cs4281_resume(struct cs4281_state *s);
/*
* for now (12/22/00) only enable the pm_register PM support.
* allow these table entries to be null.
#define CS4281_SUSPEND_TBL cs4281_suspend_tbl
#define CS4281_RESUME_TBL cs4281_resume_tbl
*/
#define CS4281_SUSPEND_TBL cs4281_suspend_null
#define CS4281_RESUME_TBL cs4281_resume_null
static int cs4281_pm_callback(struct pm_dev *dev, pm_request_t rqst, void *data)
{
struct cs4281_state *state;
CS_DBGOUT(CS_PM, 2, printk(KERN_INFO
"cs4281: cs4281_pm_callback dev=%p rqst=0x%x state=%p\n",
dev,(unsigned)rqst,data));
state = (struct cs4281_state *) dev->data;
if (state) {
switch(rqst) {
case PM_SUSPEND:
CS_DBGOUT(CS_PM, 2, printk(KERN_INFO
"cs4281: PM suspend request\n"));
if(cs4281_suspend(state))
{
CS_DBGOUT(CS_ERROR, 2, printk(KERN_INFO
"cs4281: PM suspend request refused\n"));
return 1;
}
break;
case PM_RESUME:
CS_DBGOUT(CS_PM, 2, printk(KERN_INFO
"cs4281: PM resume request\n"));
if(cs4281_resume(state))
{
CS_DBGOUT(CS_ERROR, 2, printk(KERN_INFO
"cs4281: PM resume request refused\n"));
return 1;
}
break;
}
}
return 0;
}
#else /* CS4281_PM */
#define CS4281_SUSPEND_TBL cs4281_suspend_null
#define CS4281_RESUME_TBL cs4281_resume_null
#endif /* CS4281_PM */
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