1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-only
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * Intel Low Power Subsystem clocks.
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Copyright (C) 2013, Intel Corporation
6*4882a593Smuzhiyun * Authors: Mika Westerberg <mika.westerberg@linux.intel.com>
7*4882a593Smuzhiyun * Heikki Krogerus <heikki.krogerus@linux.intel.com>
8*4882a593Smuzhiyun */
9*4882a593Smuzhiyun
10*4882a593Smuzhiyun #include <linux/clk-provider.h>
11*4882a593Smuzhiyun #include <linux/err.h>
12*4882a593Smuzhiyun #include <linux/module.h>
13*4882a593Smuzhiyun #include <linux/platform_data/x86/clk-lpss.h>
14*4882a593Smuzhiyun #include <linux/platform_device.h>
15*4882a593Smuzhiyun
lpt_clk_probe(struct platform_device * pdev)16*4882a593Smuzhiyun static int lpt_clk_probe(struct platform_device *pdev)
17*4882a593Smuzhiyun {
18*4882a593Smuzhiyun struct lpss_clk_data *drvdata;
19*4882a593Smuzhiyun struct clk *clk;
20*4882a593Smuzhiyun
21*4882a593Smuzhiyun drvdata = devm_kzalloc(&pdev->dev, sizeof(*drvdata), GFP_KERNEL);
22*4882a593Smuzhiyun if (!drvdata)
23*4882a593Smuzhiyun return -ENOMEM;
24*4882a593Smuzhiyun
25*4882a593Smuzhiyun /* LPSS free running clock */
26*4882a593Smuzhiyun drvdata->name = "lpss_clk";
27*4882a593Smuzhiyun clk = clk_register_fixed_rate(&pdev->dev, drvdata->name, NULL,
28*4882a593Smuzhiyun 0, 100000000);
29*4882a593Smuzhiyun if (IS_ERR(clk))
30*4882a593Smuzhiyun return PTR_ERR(clk);
31*4882a593Smuzhiyun
32*4882a593Smuzhiyun drvdata->clk = clk;
33*4882a593Smuzhiyun platform_set_drvdata(pdev, drvdata);
34*4882a593Smuzhiyun return 0;
35*4882a593Smuzhiyun }
36*4882a593Smuzhiyun
37*4882a593Smuzhiyun static struct platform_driver lpt_clk_driver = {
38*4882a593Smuzhiyun .driver = {
39*4882a593Smuzhiyun .name = "clk-lpt",
40*4882a593Smuzhiyun },
41*4882a593Smuzhiyun .probe = lpt_clk_probe,
42*4882a593Smuzhiyun };
43*4882a593Smuzhiyun
lpt_clk_init(void)44*4882a593Smuzhiyun int __init lpt_clk_init(void)
45*4882a593Smuzhiyun {
46*4882a593Smuzhiyun return platform_driver_register(&lpt_clk_driver);
47*4882a593Smuzhiyun }
48