1 /*
2 * Intel Low Power Subsystem clocks.
3 *
4 * Copyright (C) 2013, Intel Corporation
5 * Authors: Mika Westerberg <mika.westerberg@linux.intel.com>
6 * Heikki Krogerus <heikki.krogerus@linux.intel.com>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
11 */
12
13 #include <linux/clk-provider.h>
14 #include <linux/err.h>
15 #include <linux/module.h>
16 #include <linux/platform_data/clk-lpss.h>
17 #include <linux/platform_device.h>
18
lpt_clk_probe(struct platform_device * pdev)19 static int lpt_clk_probe(struct platform_device *pdev)
20 {
21 struct lpss_clk_data *drvdata;
22 struct clk *clk;
23
24 drvdata = devm_kzalloc(&pdev->dev, sizeof(*drvdata), GFP_KERNEL);
25 if (!drvdata)
26 return -ENOMEM;
27
28 /* LPSS free running clock */
29 drvdata->name = "lpss_clk";
30 clk = clk_register_fixed_rate(&pdev->dev, drvdata->name, NULL,
31 0, 100000000);
32 if (IS_ERR(clk))
33 return PTR_ERR(clk);
34
35 drvdata->clk = clk;
36 platform_set_drvdata(pdev, drvdata);
37 return 0;
38 }
39
40 static struct platform_driver lpt_clk_driver = {
41 .driver = {
42 .name = "clk-lpt",
43 },
44 .probe = lpt_clk_probe,
45 };
46
lpt_clk_init(void)47 int __init lpt_clk_init(void)
48 {
49 return platform_driver_register(&lpt_clk_driver);
50 }
51
