1 files changed, 113 insertions, 0 deletions
diff --git a/drivers/clk/msm/clock-dummy.c b/drivers/clk/msm/clock-dummy.c
new file mode 100644
index 000000000000..e5339b110cd6
--- /dev/null
+++ b/drivers/clk/msm/clock-dummy.c
@@ -0,0 +1,113 @@
+/* Copyright (c) 2011,2013-2014 The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only 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/clk/msm-clk-provider.h>
+#include <linux/platform_device.h>
+#include <linux/of.h>
+#include <soc/qcom/msm-clock-controller.h>
+
+static int dummy_clk_reset(struct clk *clk, enum clk_reset_action action)
+{
+	return 0;
+}
+
+static int dummy_clk_set_rate(struct clk *clk, unsigned long rate)
+{
+	clk->rate = rate;
+	return 0;
+}
+
+static int dummy_clk_set_max_rate(struct clk *clk, unsigned long rate)
+{
+	return 0;
+}
+
+static int dummy_clk_set_flags(struct clk *clk, unsigned flags)
+{
+	return 0;
+}
+
+static unsigned long dummy_clk_get_rate(struct clk *clk)
+{
+	return clk->rate;
+}
+
+static long dummy_clk_round_rate(struct clk *clk, unsigned long rate)
+{
+	return rate;
+}
+
+struct clk_ops clk_ops_dummy = {
+	.reset = dummy_clk_reset,
+	.set_rate = dummy_clk_set_rate,
+	.set_max_rate = dummy_clk_set_max_rate,
+	.set_flags = dummy_clk_set_flags,
+	.get_rate = dummy_clk_get_rate,
+	.round_rate = dummy_clk_round_rate,
+};
+
+struct clk dummy_clk = {
+	.dbg_name = "dummy_clk",
+	.ops = &clk_ops_dummy,
+	CLK_INIT(dummy_clk),
+};
+
+static void *dummy_clk_dt_parser(struct device *dev, struct device_node *np)
+{
+	struct clk *c;
+	c = devm_kzalloc(dev, sizeof(*c), GFP_KERNEL);
+	if (!c) {
+		dev_err(dev, "failed to map memory for %s\n", np->name);
+		return ERR_PTR(-ENOMEM);
+	}
+	c->ops = &clk_ops_dummy;
+	return msmclk_generic_clk_init(dev, np, c);
+}
+MSMCLK_PARSER(dummy_clk_dt_parser, "qcom,dummy-clk", 0);
+
+static struct clk *of_dummy_get(struct of_phandle_args *clkspec,
+				  void *data)
+{
+	return &dummy_clk;
+}
+
+static struct of_device_id msm_clock_dummy_match_table[] = {
+	{ .compatible = "qcom,dummycc" },
+	{}
+};
+
+static int msm_clock_dummy_probe(struct platform_device *pdev)
+{
+	int ret;
+
+	ret = of_clk_add_provider(pdev->dev.of_node, of_dummy_get, NULL);
+	if (ret)
+		return -ENOMEM;
+
+	dev_info(&pdev->dev, "Registered DUMMY provider.\n");
+	return ret;
+}
+
+static struct platform_driver msm_clock_dummy_driver = {
+	.probe = msm_clock_dummy_probe,
+	.driver = {
+		.name = "clock-dummy",
+		.of_match_table = msm_clock_dummy_match_table,
+		.owner = THIS_MODULE,
+	},
+};
+
+int __init msm_dummy_clk_init(void)
+{
+	return platform_driver_register(&msm_clock_dummy_driver);
+}
+arch_initcall(msm_dummy_clk_init);