diff options
Diffstat (limited to 'sound/oss/cs4281/cs4281pm-24.c')
| -rw-r--r-- | sound/oss/cs4281/cs4281pm-24.c | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/sound/oss/cs4281/cs4281pm-24.c b/sound/oss/cs4281/cs4281pm-24.c new file mode 100644 index 00000000000..d2a453aff0a --- /dev/null +++ b/sound/oss/cs4281/cs4281pm-24.c @@ -0,0 +1,84 @@ +/******************************************************************************* +* +* "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 */ + |