aboutsummaryrefslogtreecommitdiff
path: root/sound/ac97_bus.c
diff options
context:
space:
mode:
authorNicolas Pitre <nico@cam.org>2006-12-12 13:32:29 -0500
committerLinus Torvalds <torvalds@woody.osdl.org>2006-12-12 10:43:21 -0800
commite1036502e5263851259d147771226161e5ccc85a (patch)
tree46a88e0b23dbb1df5d38e6b210d09641974274e9 /sound/ac97_bus.c
parent741441ab7800f1eb031e74fd720f4f8f361678ed (diff)
downloadlinux-e1036502e5263851259d147771226161e5ccc85a.tar.gz
[PATCH] remove config ordering/dependency between ucb1400-ts and sound subsystem
Commit 2d4ba4a3b9aef95d328d74a17ae84f8d658059e2 introduced a dependency that was never meant to exist when the ac97_bus.c module was created. Move ac97_bus.c up the directory hierarchy to make sure it is built when selected even if sound is configured out so things work as originally intended. Signed-off-by: Nicolas Pitre <nico@cam.org> Acked-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'sound/ac97_bus.c')
-rw-r--r--sound/ac97_bus.c72
1 files changed, 72 insertions, 0 deletions
diff --git a/sound/ac97_bus.c b/sound/ac97_bus.c
new file mode 100644
index 00000000000..66de2c2f155
--- /dev/null
+++ b/sound/ac97_bus.c
@@ -0,0 +1,72 @@
+/*
+ * Linux driver model AC97 bus interface
+ *
+ * Author: Nicolas Pitre
+ * Created: Jan 14, 2005
+ * Copyright: (C) MontaVista Software Inc.
+ *
+ * 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.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/string.h>
+
+/*
+ * Let drivers decide whether they want to support given codec from their
+ * probe method. Drivers have direct access to the struct snd_ac97 structure and may
+ * decide based on the id field amongst other things.
+ */
+static int ac97_bus_match(struct device *dev, struct device_driver *drv)
+{
+ return 1;
+}
+
+static int ac97_bus_suspend(struct device *dev, pm_message_t state)
+{
+ int ret = 0;
+
+ if (dev->driver && dev->driver->suspend)
+ ret = dev->driver->suspend(dev, state);
+
+ return ret;
+}
+
+static int ac97_bus_resume(struct device *dev)
+{
+ int ret = 0;
+
+ if (dev->driver && dev->driver->resume)
+ ret = dev->driver->resume(dev);
+
+ return ret;
+}
+
+struct bus_type ac97_bus_type = {
+ .name = "ac97",
+ .match = ac97_bus_match,
+ .suspend = ac97_bus_suspend,
+ .resume = ac97_bus_resume,
+};
+
+static int __init ac97_bus_init(void)
+{
+ return bus_register(&ac97_bus_type);
+}
+
+subsys_initcall(ac97_bus_init);
+
+static void __exit ac97_bus_exit(void)
+{
+ bus_unregister(&ac97_bus_type);
+}
+
+module_exit(ac97_bus_exit);
+
+EXPORT_SYMBOL(ac97_bus_type);
+
+MODULE_LICENSE("GPL");