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-rw-r--r--sound/oss/cs4281/cs4281pm-24.c84
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
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--- /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 */
+
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