linux-imx

// SPDX-License-Identifier: GPL-2.0

/*

 * Intel(R) Trace Hub Global Trace Hub

 *

 * Copyright (C) 2014-2015 Intel Corporation.

 */

​

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

​

#include <linux/types.h>

#include <linux/module.h>

#include <linux/device.h>

#include <linux/io.h>

#include <linux/mm.h>

#include <linux/slab.h>

#include <linux/bitmap.h>

#include <linux/pm_runtime.h>

​

#include "intel_th.h"

#include "gth.h"

​

struct gth_device;

​

/**

 * struct gth_output - GTH view on an output port

 * @gth:    backlink to the GTH device

 * @output: link to output device's output descriptor

 * @index:  output port number

 * @port_type:  one of GTH_* port type values

 * @master: bitmap of masters configured for this output

 */

struct gth_output {

    struct gth_device   *gth;

    struct intel_th_output  *output;

    unsigned int        index;

    unsigned int        port_type;

    DECLARE_BITMAP(master, TH_CONFIGURABLE_MASTERS + 1);

};

​

/**

 * struct gth_device - GTH device

 * @dev:    driver core's device

 * @base:   register window base address

 * @output_group:   attributes describing output ports

 * @master_group:   attributes describing master assignments

 * @output:     output ports

 * @master:     master/output port assignments

 * @gth_lock:       serializes accesses to GTH bits

 */

struct gth_device {

    struct device       *dev;

    void __iomem        *base;

​

    struct attribute_group  output_group;

    struct attribute_group  master_group;

    struct gth_output   output[TH_POSSIBLE_OUTPUTS];

    signed char     master[TH_CONFIGURABLE_MASTERS + 1];

    spinlock_t      gth_lock;

};

​

static void gth_output_set(struct gth_device *gth, int port,

               unsigned int config)

{