Source of debugfs.c - linux-imx - PHYTEC BitBucket (Stash)

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             dev_name(dev));
    else
        snprintf(name, NAME_MAX, "%s", dev_name(dev));
}
​
void opp_debug_remove_one(struct dev_pm_opp *opp)
{
    debugfs_remove_recursive(opp->dentry);
}
​
static bool opp_debug_create_supplies(struct dev_pm_opp *opp,
static void opp_debug_create_supplies(struct dev_pm_opp *opp,
                      struct opp_table *opp_table,
                      struct dentry *pdentry)
{
    struct dentry *d;
    int i;
​
    for (i = 0; i < opp_table->regulator_count; i++) {
        char name[15];
​
        snprintf(name, sizeof(name), "supply-%d", i);
​
        /* Create per-opp directory */
        d = debugfs_create_dir(name, pdentry);
​
        if (!d)
            return false;
        debugfs_create_ulong("u_volt_target", S_IRUGO, d,
                     &opp->supplies[i].u_volt);
​
        if (!debugfs_create_ulong("u_volt_target", S_IRUGO, d,
                      &opp->supplies[i].u_volt))
            return false;
        debugfs_create_ulong("u_volt_min", S_IRUGO, d,
                     &opp->supplies[i].u_volt_min);
​
        if (!debugfs_create_ulong("u_volt_min", S_IRUGO, d,
                      &opp->supplies[i].u_volt_min))
            return false;
        debugfs_create_ulong("u_volt_max", S_IRUGO, d,
                     &opp->supplies[i].u_volt_max);
​
        if (!debugfs_create_ulong("u_volt_max", S_IRUGO, d,
                      &opp->supplies[i].u_volt_max))
            return false;
​
        if (!debugfs_create_ulong("u_amp", S_IRUGO, d,
                      &opp->supplies[i].u_amp))
            return false;
        debugfs_create_ulong("u_amp", S_IRUGO, d,
                     &opp->supplies[i].u_amp);
    }
​
    return true;
}
​
int opp_debug_create_one(struct dev_pm_opp *opp, struct opp_table *opp_table)
void opp_debug_create_one(struct dev_pm_opp *opp, struct opp_table *opp_table)
{
    struct dentry *pdentry = opp_table->dentry;
    struct dentry *d;
    unsigned long id;
    char name[25];  /* 20 chars for 64 bit value + 5 (opp:\0) */
​
    /*
     * Get directory name for OPP.
     *
     * - Normally rate is unique to each OPP, use it to get unique opp-name.
Show more
     */
    if (likely(opp->rate))
        id = opp->rate;
    else
        id = _get_opp_count(opp_table);
​
    snprintf(name, sizeof(name), "opp:%lu", id);
​
    /* Create per-opp directory */
    d = debugfs_create_dir(name, pdentry);
    if (!d)
        return -ENOMEM;
​
    if (!debugfs_create_bool("available", S_IRUGO, d, &opp->available))
        return -ENOMEM;
​
    if (!debugfs_create_bool("dynamic", S_IRUGO, d, &opp->dynamic))
        return -ENOMEM;
​
    if (!debugfs_create_bool("turbo", S_IRUGO, d, &opp->turbo))
        return -ENOMEM;
​
    if (!debugfs_create_bool("suspend", S_IRUGO, d, &opp->suspend))
        return -ENOMEM;
​
    if (!debugfs_create_u32("performance_state", S_IRUGO, d, &opp->pstate))
        return -ENOMEM;
​
    if (!debugfs_create_ulong("rate_hz", S_IRUGO, d, &opp->rate))
        return -ENOMEM;
    debugfs_create_bool("available", S_IRUGO, d, &opp->available);
    debugfs_create_bool("dynamic", S_IRUGO, d, &opp->dynamic);
    debugfs_create_bool("turbo", S_IRUGO, d, &opp->turbo);
    debugfs_create_bool("suspend", S_IRUGO, d, &opp->suspend);
    debugfs_create_u32("performance_state", S_IRUGO, d, &opp->pstate);
    debugfs_create_ulong("rate_hz", S_IRUGO, d, &opp->rate);
    debugfs_create_ulong("clock_latency_ns", S_IRUGO, d,
                 &opp->clock_latency_ns);
​
    if (!opp_debug_create_supplies(opp, opp_table, d))
        return -ENOMEM;
​
    if (!debugfs_create_ulong("clock_latency_ns", S_IRUGO, d,
                  &opp->clock_latency_ns))
        return -ENOMEM;
    opp_debug_create_supplies(opp, opp_table, d);
​
    opp->dentry = d;
    return 0;
}
​
static int opp_list_debug_create_dir(struct opp_device *opp_dev,
                     struct opp_table *opp_table)
static void opp_list_debug_create_dir(struct opp_device *opp_dev,
                      struct opp_table *opp_table)
{
    const struct device *dev = opp_dev->dev;
    struct dentry *d;
​
    opp_set_dev_name(dev, opp_table->dentry_name);
​
    /* Create device specific directory */
    d = debugfs_create_dir(opp_table->dentry_name, rootdir);
    if (!d) {
        dev_err(dev, "%s: Failed to create debugfs dir\n", __func__);
        return -ENOMEM;
    }
​
    opp_dev->dentry = d;
    opp_table->dentry = d;
​
    return 0;
}
​
static int opp_list_debug_create_link(struct opp_device *opp_dev,
                      struct opp_table *opp_table)
static void opp_list_debug_create_link(struct opp_device *opp_dev,
                       struct opp_table *opp_table)
{
    const struct device *dev = opp_dev->dev;
    char name[NAME_MAX];
    struct dentry *d;
​
    opp_set_dev_name(opp_dev->dev, name);
​
    /* Create device specific directory link */
    d = debugfs_create_symlink(name, rootdir, opp_table->dentry_name);
    if (!d) {
        dev_err(dev, "%s: Failed to create link\n", __func__);
        return -ENOMEM;
    }
​
    opp_dev->dentry = d;
​
    return 0;
    opp_dev->dentry = debugfs_create_symlink(name, rootdir,
                         opp_table->dentry_name);
}
​
/**
 * opp_debug_register - add a device opp node to the debugfs 'opp' directory
 * @opp_dev: opp-dev pointer for device
 * @opp_table: the device-opp being added
 *
 * Dynamically adds device specific directory in debugfs 'opp' directory. If the
 * device-opp is shared with other devices, then links will be created for all
 * devices except the first.
 *
 * Return: 0 on success, otherwise negative error.
 */
int opp_debug_register(struct opp_device *opp_dev, struct opp_table *opp_table)
void opp_debug_register(struct opp_device *opp_dev, struct opp_table *opp_table)
{
    if (!rootdir) {
        pr_debug("%s: Uninitialized rootdir\n", __func__);
        return -EINVAL;
    }
​
    if (opp_table->dentry)
        return opp_list_debug_create_link(opp_dev, opp_table);
​
    return opp_list_debug_create_dir(opp_dev, opp_table);
        opp_list_debug_create_link(opp_dev, opp_table);
    else
        opp_list_debug_create_dir(opp_dev, opp_table);
}
​
static void opp_migrate_dentry(struct opp_device *opp_dev,
                   struct opp_table *opp_table)
{
    struct opp_device *new_dev;
    const struct device *dev;
    struct dentry *dentry;
​
    /* Look for next opp-dev */
Show more
    debugfs_remove_recursive(opp_dev->dentry);
​
out:
    opp_dev->dentry = NULL;
}
​
static int __init opp_debug_init(void)
{
    /* Create /sys/kernel/debug/opp directory */
    rootdir = debugfs_create_dir("opp", NULL);
    if (!rootdir) {
        pr_err("%s: Failed to create root directory\n", __func__);
        return -ENOMEM;
    }
​
    return 0;
}
core_initcall(opp_debug_init);