1 files changed, 63 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/hwspinlock.c b/arch/arm/mach-omap2/hwspinlock.c
new file mode 100644
index 000000000000..06d4a80660a5
--- /dev/null
+++ b/arch/arm/mach-omap2/hwspinlock.c
@@ -0,0 +1,63 @@
+/*
+ * OMAP hardware spinlock device initialization
+ *
+ * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com
+ *
+ * Contact: Simon Que <[email protected]>
+ *          Hari Kanigeri <[email protected]>
+ *
+ * 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.
+ *
+ * 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.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/err.h>
+
+#include <plat/omap_hwmod.h>
+#include <plat/omap_device.h>
+
+struct omap_device_pm_latency omap_spinlock_latency[] = {
+	{
+		.deactivate_func = omap_device_idle_hwmods,
+		.activate_func   = omap_device_enable_hwmods,
+		.flags = OMAP_DEVICE_LATENCY_AUTO_ADJUST,
+	}
+};
+
+int __init hwspinlocks_init(void)
+{
+	int retval = 0;
+	struct omap_hwmod *oh;
+	struct omap_device *od;
+	const char *oh_name = "spinlock";
+	const char *dev_name = "omap_hwspinlock";
+
+	/*
+	 * Hwmod lookup will fail in case our platform doesn't support the
+	 * hardware spinlock module, so it is safe to run this initcall
+	 * on all omaps
+	 */
+	oh = omap_hwmod_lookup(oh_name);
+	if (oh == NULL)
+		return -EINVAL;
+
+	od = omap_device_build(dev_name, 0, oh, NULL, 0,
+				omap_spinlock_latency,
+				ARRAY_SIZE(omap_spinlock_latency), false);
+	if (IS_ERR(od)) {
+		pr_err("Can't build omap_device for %s:%s\n", dev_name,
+								oh_name);
+		retval = PTR_ERR(od);
+	}
+
+	return retval;
+}
+/* early board code might need to reserve specific hwspinlock instances */
+postcore_initcall(hwspinlocks_init);