linux-imx

/*

 * AMD ACPI support for ACPI2platform device.

 *

 * Copyright (c) 2014,2015 AMD Corporation.

 * Authors: Ken Xue <Ken.Xue@amd.com>

 *  Wu, Jeff <Jeff.Wu@amd.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-provider.h>

#include <linux/platform_data/clk-st.h>

#include <linux/platform_device.h>

#include <linux/pm_domain.h>

#include <linux/clkdev.h>

#include <linux/acpi.h>

#include <linux/err.h>

#include <linux/pm.h>

​

#include "internal.h"

​

ACPI_MODULE_NAME("acpi_apd");

struct apd_private_data;

​

/**

 * ACPI_APD_SYSFS : add device attributes in sysfs

 * ACPI_APD_PM : attach power domain to device

 */

#define ACPI_APD_SYSFS  BIT(0)

#define ACPI_APD_PM BIT(1)

​

/**

 * struct apd_device_desc - a descriptor for apd device

 * @flags: device flags like %ACPI_APD_SYSFS, %ACPI_APD_PM

 * @fixed_clk_rate: fixed rate input clock source for acpi device;

 *          0 means no fixed rate input clock source

 * @setup: a hook routine to set device resource during create platform device

 *

 * Device description defined as acpi_device_id.driver_data

 */

struct apd_device_desc {

    unsigned int flags;

    unsigned int fixed_clk_rate;

    struct property_entry *properties;

    int (*setup)(struct apd_private_data *pdata);

};

​

struct apd_private_data {

    struct clk *clk;

    struct acpi_device *adev;

    const struct apd_device_desc *dev_desc;

};

​

#if defined(CONFIG_X86_AMD_PLATFORM_DEVICE) || defined(CONFIG_ARM64)

#define APD_ADDR(desc)  ((unsigned long)&desc)

​

static int acpi_apd_setup(struct apd_private_data *pdata)

{

    const struct apd_device_desc *dev_desc = pdata->dev_desc;

    struct clk *clk = ERR_PTR(-ENODEV);

​