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author | Mark Brown <broonie@kernel.org> | 2015-04-10 18:05:21 (GMT) |
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committer | Mark Brown <broonie@kernel.org> | 2015-04-10 18:05:21 (GMT) |
commit | 498e530e50ffccb979cf5f2f2e5bbce01afe1b6e (patch) | |
tree | 570abaf90e9ca8752ff07bb9466146c3f676444d /drivers/regulator/core.c | |
parent | 6261b06de565baafa590e58a531a1a5522cea0b6 (diff) | |
parent | 23296099e70854a272fc369bab8ddcc57f27f97a (diff) | |
download | linux-498e530e50ffccb979cf5f2f2e5bbce01afe1b6e.tar.xz |
Merge branch 'topic/debugfs' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator into regulator-core
Diffstat (limited to 'drivers/regulator/core.c')
-rw-r--r-- | drivers/regulator/core.c | 120 |
1 files changed, 119 insertions, 1 deletions
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index a291a6b..cd0ca07 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -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 == ®ulator_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(®ulator_list_mutex); + + list_for_each_entry(rdev, list, list) { + if (rdev->supply) + continue; + + regulator_summary_show_subtree(s, rdev, 0); + } + + mutex_unlock(®ulator_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, + ®ulator_list, ®ulator_summary_fops); + regulator_dummy_init(); return ret; |