regmap: Expose the driver name in debugfs
Add a file called 'name' containing the name of the driver. Signed-off-by: Dimitris Papastamos <dp@opensource.wolfsonmicro.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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@ -33,6 +33,35 @@ static int regmap_open_file(struct inode *inode, struct file *file)
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return 0;
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}
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static ssize_t regmap_name_read_file(struct file *file,
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char __user *user_buf, size_t count,
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loff_t *ppos)
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{
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struct regmap *map = file->private_data;
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int ret;
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char *buf;
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buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
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if (!buf)
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return -ENOMEM;
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ret = snprintf(buf, PAGE_SIZE, "%s\n", map->dev->driver->name);
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if (ret < 0) {
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kfree(buf);
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return ret;
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}
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ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
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kfree(buf);
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return ret;
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}
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static const struct file_operations regmap_name_fops = {
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.open = regmap_open_file,
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.read = regmap_name_read_file,
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.llseek = default_llseek,
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};
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static ssize_t regmap_map_read_file(struct file *file, char __user *user_buf,
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size_t count, loff_t *ppos)
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{
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@ -228,6 +257,9 @@ void regmap_debugfs_init(struct regmap *map)
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return;
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}
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debugfs_create_file("name", 0400, map->debugfs,
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map, ®map_name_fops);
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if (map->max_register) {
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debugfs_create_file("registers", 0400, map->debugfs,
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map, ®map_map_fops);
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