Merge tag 'pcie_kw-3.11-2' of git://git.infradead.org/users/jcooper/linux into next/soc
[platform/adaptation/renesas_rcar/renesas_kernel.git] / drivers / clk / x86 / clk-lpt.c
1 /*
2  * Intel Lynxpoint LPSS 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.h>
14 #include <linux/clkdev.h>
15 #include <linux/clk-provider.h>
16 #include <linux/err.h>
17 #include <linux/module.h>
18 #include <linux/platform_data/clk-lpss.h>
19 #include <linux/platform_device.h>
20
21 #define PRV_CLOCK_PARAMS 0x800
22
23 static int lpt_clk_probe(struct platform_device *pdev)
24 {
25         struct lpss_clk_data *drvdata;
26         struct clk *clk;
27
28         drvdata = devm_kzalloc(&pdev->dev, sizeof(*drvdata), GFP_KERNEL);
29         if (!drvdata)
30                 return -ENOMEM;
31
32         /* LPSS free running clock */
33         drvdata->name = "lpss_clk";
34         clk = clk_register_fixed_rate(&pdev->dev, drvdata->name, NULL,
35                                       CLK_IS_ROOT, 100000000);
36         if (IS_ERR(clk))
37                 return PTR_ERR(clk);
38
39         drvdata->clk = clk;
40         platform_set_drvdata(pdev, drvdata);
41         return 0;
42 }
43
44 static struct platform_driver lpt_clk_driver = {
45         .driver = {
46                 .name = "clk-lpt",
47                 .owner = THIS_MODULE,
48         },
49         .probe = lpt_clk_probe,
50 };
51
52 int __init lpt_clk_init(void)
53 {
54         return platform_driver_register(&lpt_clk_driver);
55 }