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Diffstat (limited to 'kernel/drivers/clk/x86/clk-lpt.c')
-rw-r--r--kernel/drivers/clk/x86/clk-lpt.c52
1 files changed, 52 insertions, 0 deletions
diff --git a/kernel/drivers/clk/x86/clk-lpt.c b/kernel/drivers/clk/x86/clk-lpt.c
new file mode 100644
index 000000000..f827083de
--- /dev/null
+++ b/kernel/drivers/clk/x86/clk-lpt.c
@@ -0,0 +1,52 @@
+/*
+ * Intel Low Power Subsystem clocks.
+ *
+ * Copyright (C) 2013, Intel Corporation
+ * Authors: Mika Westerberg <mika.westerberg@linux.intel.com>
+ * Heikki Krogerus <heikki.krogerus@linux.intel.com>
+ *
+ * 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.
+ */
+
+#include <linux/clk.h>
+#include <linux/clkdev.h>
+#include <linux/clk-provider.h>
+#include <linux/err.h>
+#include <linux/module.h>
+#include <linux/platform_data/clk-lpss.h>
+#include <linux/platform_device.h>
+
+static int lpt_clk_probe(struct platform_device *pdev)
+{
+ struct lpss_clk_data *drvdata;
+ struct clk *clk;
+
+ drvdata = devm_kzalloc(&pdev->dev, sizeof(*drvdata), GFP_KERNEL);
+ if (!drvdata)
+ return -ENOMEM;
+
+ /* LPSS free running clock */
+ drvdata->name = "lpss_clk";
+ clk = clk_register_fixed_rate(&pdev->dev, drvdata->name, NULL,
+ CLK_IS_ROOT, 100000000);
+ if (IS_ERR(clk))
+ return PTR_ERR(clk);
+
+ drvdata->clk = clk;
+ platform_set_drvdata(pdev, drvdata);
+ return 0;
+}
+
+static struct platform_driver lpt_clk_driver = {
+ .driver = {
+ .name = "clk-lpt",
+ },
+ .probe = lpt_clk_probe,
+};
+
+int __init lpt_clk_init(void)
+{
+ return platform_driver_register(&lpt_clk_driver);
+}