Merge branch 'topic/debugfs' of... (498e530e) · Commits · e / devices / android_kernel_samsung_universal8895

drivers/regulator/core.c

+119 −1

Original line number	Diff line number	Diff line
		@@ -3556,7 +3556,18 @@ static struct class regulator_class = {

		static void rdev_init_debugfs(struct regulator_dev *rdev)
		{
		rdev->debugfs = debugfs_create_dir(rdev_get_name(rdev), debugfs_root);
		struct device *parent = rdev->dev.parent;
		const char *rname = rdev_get_name(rdev);
		char name[NAME_MAX];

		/* Avoid duplicate debugfs directory names */
		if (parent && rname == rdev->desc->name) {
		snprintf(name, sizeof(name), "%s-%s", dev_name(parent),
		rname);
		rname = name;
		}

		rdev->debugfs = debugfs_create_dir(rname, debugfs_root);
		if (!rdev->debugfs) {
		rdev_warn(rdev, "Failed to create debugfs directory\n");
		return;
		@@ -3963,6 +3974,110 @@ static const struct file_operations supply_map_fops = {
		#endif
		};

		#ifdef CONFIG_DEBUG_FS
		static void regulator_summary_show_subtree(struct seq_file *s,
		struct regulator_dev *rdev,
		int level)
		{
		struct list_head *list = s->private;
		struct regulator_dev *child;
		struct regulation_constraints *c;
		struct regulator *consumer;

		if (!rdev)
		return;

		seq_printf(s, "%s%-s %3d %4d %6d ",
		level * 3 + 1, "",
		30 - level * 3, rdev_get_name(rdev),
		rdev->use_count, rdev->open_count, rdev->bypass_count);

		seq_printf(s, "%5dmV ", _regulator_get_voltage(rdev) / 1000);
		seq_printf(s, "%5dmA ", _regulator_get_current_limit(rdev) / 1000);

		c = rdev->constraints;
		if (c) {
		switch (rdev->desc->type) {
		case REGULATOR_VOLTAGE:
		seq_printf(s, "%5dmV %5dmV ",
		c->min_uV / 1000, c->max_uV / 1000);
		break;
		case REGULATOR_CURRENT:
		seq_printf(s, "%5dmA %5dmA ",
		c->min_uA / 1000, c->max_uA / 1000);
		break;
		}
		}

		seq_puts(s, "\n");

		list_for_each_entry(consumer, &rdev->consumer_list, list) {
		if (consumer->dev->class == &regulator_class)
		continue;

		seq_printf(s, "%s%-s ",
		(level + 1) * 3 + 1, "",
		30 - (level + 1) * 3, dev_name(consumer->dev));

		switch (rdev->desc->type) {
		case REGULATOR_VOLTAGE:
		seq_printf(s, "%37dmV %5dmV",
		consumer->min_uV / 1000,
		consumer->max_uV / 1000);
		break;
		case REGULATOR_CURRENT:
		break;
		}

		seq_puts(s, "\n");
		}

		list_for_each_entry(child, list, list) {
		/* handle only non-root regulators supplied by current rdev */
		if (!child->supply \|\| child->supply->rdev != rdev)
		continue;

		regulator_summary_show_subtree(s, child, level + 1);
		}
		}

		static int regulator_summary_show(struct seq_file s, void data)
		{
		struct list_head *list = s->private;
		struct regulator_dev *rdev;

		seq_puts(s, " regulator use open bypass voltage current min max\n");
		seq_puts(s, "-------------------------------------------------------------------------------\n");

		mutex_lock(&regulator_list_mutex);

		list_for_each_entry(rdev, list, list) {
		if (rdev->supply)
		continue;

		regulator_summary_show_subtree(s, rdev, 0);
		}

		mutex_unlock(&regulator_list_mutex);

		return 0;
		}

		static int regulator_summary_open(struct inode inode, struct file file)
		{
		return single_open(file, regulator_summary_show, inode->i_private);
		}
		#endif

		static const struct file_operations regulator_summary_fops = {
		#ifdef CONFIG_DEBUG_FS
		.open = regulator_summary_open,
		.read = seq_read,
		.llseek = seq_lseek,
		.release = single_release,
		#endif
		};

		static int __init regulator_init(void)
		{
		int ret;
		@@ -3976,6 +4091,9 @@ static int __init regulator_init(void)
		debugfs_create_file("supply_map", 0444, debugfs_root, NULL,
		&supply_map_fops);

		debugfs_create_file("regulator_summary", 0444, debugfs_root,
		&regulator_list, &regulator_summary_fops);

		regulator_dummy_init();

		return ret;