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 000000000000..d2a453aff0aa
--- /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 */
+