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/*
* Intel Lynxpoint LPSS 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/acpi.h>
#include <linux/clk.h>
#include <linux/clkdev.h>
#include <linux/clk-provider.h>
#include <linux/err.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include "clk-lpss.h"
#define PRV_CLOCK_PARAMS 0x800
static int lpt_clk_probe(struct platform_device *pdev)
{
struct clk *clk;
/* LPSS free running clock */
clk = clk_register_fixed_rate(&pdev->dev, "lpss_clk", NULL, CLK_IS_ROOT,
100000000);
if (IS_ERR(clk))
return PTR_ERR(clk);
/* Shared DMA clock */
clk_register_clkdev(clk, "hclk", "INTL9C60.0.auto");
/* SPI clocks */
clk = clk_register_lpss_gate("spi0_clk", "lpss_clk", "INT33C0", NULL,
PRV_CLOCK_PARAMS);
if (!IS_ERR(clk))
clk_register_clkdev(clk, NULL, "INT33C0:00");
clk = clk_register_lpss_gate("spi1_clk", "lpss_clk", "INT33C1", NULL,
PRV_CLOCK_PARAMS);
if (!IS_ERR(clk))
clk_register_clkdev(clk, NULL, "INT33C1:00");
/* I2C clocks */
clk = clk_register_lpss_gate("i2c0_clk", "lpss_clk", "INT33C2", NULL,
PRV_CLOCK_PARAMS);
if (!IS_ERR(clk))
clk_register_clkdev(clk, NULL, "INT33C2:00");
clk = clk_register_lpss_gate("i2c1_clk", "lpss_clk", "INT33C3", NULL,
PRV_CLOCK_PARAMS);
if (!IS_ERR(clk))
clk_register_clkdev(clk, NULL, "INT33C3:00");
/* UART clocks */
clk = clk_register_lpss_gate("uart0_clk", "lpss_clk", "INT33C4", NULL,
PRV_CLOCK_PARAMS);
if (!IS_ERR(clk))
clk_register_clkdev(clk, NULL, "INT33C4:00");
clk = clk_register_lpss_gate("uart1_clk", "lpss_clk", "INT33C5", NULL,
PRV_CLOCK_PARAMS);
if (!IS_ERR(clk))
clk_register_clkdev(clk, NULL, "INT33C5:00");
return 0;
}
static struct platform_driver lpt_clk_driver = {
.driver = {
.name = "clk-lpt",
.owner = THIS_MODULE,
},
.probe = lpt_clk_probe,
};
static int __init lpt_clk_init(void)
{
return platform_driver_register(&lpt_clk_driver);
}
arch_initcall(lpt_clk_init);
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