Merge branches 'clk-ingenic', 'clk-mtk-mux', 'clk-qcom-sdm845-pcie', 'clk-mtk-crit...
[sfrench/cifs-2.6.git] / drivers / clk / x86 / clk-lpt.c
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/x86/clk-lpss.h>
17 #include <linux/platform_device.h>
18
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
47 int __init lpt_clk_init(void)
48 {
49         return platform_driver_register(&lpt_clk_driver);
50 }