clk-lpss-atom.c (1122B)
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 16static 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(&pdev->dev, 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(&pdev->dev, drvdata->name, NULL, 28 0, 100000000); 29 if (IS_ERR(clk)) 30 return PTR_ERR(clk); 31 32 drvdata->clk = clk; 33 platform_set_drvdata(pdev, drvdata); 34 return 0; 35} 36 37static struct platform_driver lpss_atom_clk_driver = { 38 .driver = { 39 .name = "clk-lpss-atom", 40 }, 41 .probe = lpss_atom_clk_probe, 42}; 43 44int __init lpss_atom_clk_init(void) 45{ 46 return platform_driver_register(&lpss_atom_clk_driver); 47}