1 files changed, 66 insertions, 0 deletions

diff --git a/drivers/regulator/dummy.c b/drivers/regulator/dummy.c
new file mode 100644
index 000000000000..c7410bde7b5d
--- /dev/null
+++ b/drivers/regulator/dummy.c
@@ -0,0 +1,66 @@
+/*
+ * dummy.c
+ *
+ * Copyright 2010 Wolfson Microelectronics PLC.
+ *
+ * Author: Mark Brown <broonie@opensource.wolfsonmicro.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 is useful for systems with mixed controllable and
+ * non-controllable regulators, as well as for allowing testing on
+ * systems with no controllable regulators.
+ */
+
+#include <linux/err.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+
+#include "dummy.h"
+
+struct regulator_dev *dummy_regulator_rdev;
+
+static struct regulator_init_data dummy_initdata;
+
+static struct regulator_ops dummy_ops;
+
+static struct regulator_desc dummy_desc = {
+        .name = "dummy",
+        .id = -1,
+        .type = REGULATOR_VOLTAGE,
+        .owner = THIS_MODULE,
+        .ops = &dummy_ops,
+};
+
+static struct platform_device *dummy_pdev;
+
+void __init regulator_dummy_init(void)
+{
+        int ret;
+
+        dummy_pdev = platform_device_alloc("reg-dummy", -1);
+        if (!dummy_pdev) {
+                pr_err("Failed to allocate dummy regulator device\n");
+                return;
+        }
+
+        ret = platform_device_add(dummy_pdev);
+        if (ret != 0) {
+                pr_err("Failed to register dummy regulator device: %d\n", ret);
+                platform_device_put(dummy_pdev);
+                return;
+        }
+
+        dummy_regulator_rdev = regulator_register(&dummy_desc, NULL,
+                                                  &dummy_initdata, NULL);
+        if (IS_ERR(dummy_regulator_rdev)) {
+                ret = PTR_ERR(dummy_regulator_rdev);
+                pr_err("Failed to register regulator: %d\n", ret);
+                platform_device_unregister(dummy_pdev);
+                return;
+        }
+}