diff options
Diffstat (limited to 'drivers/clk/x86/clk-lpt.c')
| -rw-r--r-- | drivers/clk/x86/clk-lpt.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/drivers/clk/x86/clk-lpt.c b/drivers/clk/x86/clk-lpt.c new file mode 100644 index 000000000..f827083de --- /dev/null +++ b/drivers/clk/x86/clk-lpt.c @@ -0,0 +1,52 @@ +/* + * Intel Low Power Subsystem clocks. + * + * Copyright (C) 2013, Intel Corporation + * Authors: Mika Westerberg <mika.westerberg@linux.intel.com> + * Heikki Krogerus <heikki.krogerus@linux.intel.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/clk.h> +#include <linux/clkdev.h> +#include <linux/clk-provider.h> +#include <linux/err.h> +#include <linux/module.h> +#include <linux/platform_data/clk-lpss.h> +#include <linux/platform_device.h> + +static int lpt_clk_probe(struct platform_device *pdev) +{ + struct lpss_clk_data *drvdata; + struct clk *clk; + + drvdata = devm_kzalloc(&pdev->dev, sizeof(*drvdata), GFP_KERNEL); + if (!drvdata) + return -ENOMEM; + + /* LPSS free running clock */ + drvdata->name = "lpss_clk"; + clk = clk_register_fixed_rate(&pdev->dev, drvdata->name, NULL, + CLK_IS_ROOT, 100000000); + if (IS_ERR(clk)) + return PTR_ERR(clk); + + drvdata->clk = clk; + platform_set_drvdata(pdev, drvdata); + return 0; +} + +static struct platform_driver lpt_clk_driver = { + .driver = { + .name = "clk-lpt", + }, + .probe = lpt_clk_probe, +}; + +int __init lpt_clk_init(void) +{ + return platform_driver_register(&lpt_clk_driver); +} |