summaryrefslogtreecommitdiffstats
path: root/include/asm-arm/arch-omap/gpio-switch.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/asm-arm/arch-omap/gpio-switch.h')
-rw-r--r--include/asm-arm/arch-omap/gpio-switch.h54
1 files changed, 54 insertions, 0 deletions
diff --git a/include/asm-arm/arch-omap/gpio-switch.h b/include/asm-arm/arch-omap/gpio-switch.h
new file mode 100644
index 000000000000..10da0e07c0cf
--- /dev/null
+++ b/include/asm-arm/arch-omap/gpio-switch.h
@@ -0,0 +1,54 @@
+/*
+ * GPIO switch definitions
+ *
+ * Copyright (C) 2006 Nokia Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __ASM_ARCH_OMAP_GPIO_SWITCH_H
+#define __ASM_ARCH_OMAP_GPIO_SWITCH_H
+
+#include <linux/types.h>
+
+/* Cover:
+ * high -> closed
+ * low -> open
+ * Connection:
+ * high -> connected
+ * low -> disconnected
+ * Activity:
+ * high -> active
+ * low -> inactive
+ *
+ */
+#define OMAP_GPIO_SWITCH_TYPE_COVER 0x0000
+#define OMAP_GPIO_SWITCH_TYPE_CONNECTION 0x0001
+#define OMAP_GPIO_SWITCH_TYPE_ACTIVITY 0x0002
+#define OMAP_GPIO_SWITCH_FLAG_INVERTED 0x0001
+#define OMAP_GPIO_SWITCH_FLAG_OUTPUT 0x0002
+
+struct omap_gpio_switch {
+ const char *name;
+ s16 gpio;
+ unsigned flags:4;
+ unsigned type:4;
+
+ /* Time in ms to debounce when transitioning from
+ * inactive state to active state. */
+ u16 debounce_rising;
+ /* Same for transition from active to inactive state. */
+ u16 debounce_falling;
+
+ /* notify board-specific code about state changes */
+ void (* notify)(void *data, int state);
+ void *notify_data;
+};
+
+/* Call at init time only */
+extern void omap_register_gpio_switches(const struct omap_gpio_switch *tbl,
+ int count);
+
+#endif
OpenPOWER on IntegriCloud