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