linux/drivers/clk/samsung/clk-exynos-audss.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (c) 2013 Samsung Electronics Co., Ltd.
 * Author: Padmavathi Venna <[email protected]>
 *
 * Common Clock Framework support for Audio Subsystem Clock Controller.
*/

#include <linux/slab.h>
#include <linux/io.h>
#include <linux/clk.h>
#include <linux/clk-provider.h>
#include <linux/of.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>

#include <dt-bindings/clock/exynos-audss-clk.h>

static DEFINE_SPINLOCK(lock);
static void __iomem *reg_base;
static struct clk_hw_onecell_data *clk_data;
/*
 * On Exynos5420 this will be a clock which has to be enabled before any
 * access to audss registers. Typically a child of EPLL.
 *
 * On other platforms this will be -ENODEV.
 */
static struct clk *epll;

#define ASS_CLK_SRC …
#define ASS_CLK_DIV …
#define ASS_CLK_GATE …

static unsigned long reg_save[][2] = …;

static int __maybe_unused exynos_audss_clk_suspend(struct device *dev)
{ … }

static int __maybe_unused exynos_audss_clk_resume(struct device *dev)
{ … }

struct exynos_audss_clk_drvdata { … };

static const struct exynos_audss_clk_drvdata exynos4210_drvdata = …;

static const struct exynos_audss_clk_drvdata exynos5410_drvdata = …;

static const struct exynos_audss_clk_drvdata exynos5420_drvdata = …;

static const struct of_device_id exynos_audss_clk_of_match[] = …;
MODULE_DEVICE_TABLE(of, exynos_audss_clk_of_match);

static void exynos_audss_clk_teardown(void)
{ … }

/* register exynos_audss clocks */
static int exynos_audss_clk_probe(struct platform_device *pdev)
{ … }

static void exynos_audss_clk_remove(struct platform_device *pdev)
{ … }

static const struct dev_pm_ops exynos_audss_clk_pm_ops = …;

static struct platform_driver exynos_audss_clk_driver = …;

module_platform_driver(…) …;

MODULE_AUTHOR(…) …;
MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;
MODULE_ALIAS(…) …;