Bluetooth: Add debugfs fields for hardware and firmware info
Some Bluetooth controllers allow for reading hardware and firmware
related vendor specific infos. If they are available, then they can be
exposed via debugfs now.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
diff --git a/net/bluetooth/hci_debugfs.c b/net/bluetooth/hci_debugfs.c
index 7db4220..63df63e 100644
--- a/net/bluetooth/hci_debugfs.c
+++ b/net/bluetooth/hci_debugfs.c
@@ -76,6 +76,30 @@
.llseek = default_llseek, \
} \
+#define DEFINE_INFO_ATTRIBUTE(__name, __field) \
+static int __name ## _show(struct seq_file *f, void *ptr) \
+{ \
+ struct hci_dev *hdev = f->private; \
+ \
+ hci_dev_lock(hdev); \
+ seq_printf(f, "%s\n", hdev->__field ? : ""); \
+ hci_dev_unlock(hdev); \
+ \
+ return 0; \
+} \
+ \
+static int __name ## _open(struct inode *inode, struct file *file) \
+{ \
+ return single_open(file, __name ## _show, inode->i_private); \
+} \
+ \
+static const struct file_operations __name ## _fops = { \
+ .open = __name ## _open, \
+ .read = seq_read, \
+ .llseek = seq_lseek, \
+ .release = single_release, \
+} \
+
static int features_show(struct seq_file *f, void *ptr)
{
struct hci_dev *hdev = f->private;
@@ -349,6 +373,9 @@
.llseek = default_llseek,
};
+DEFINE_INFO_ATTRIBUTE(hardware_info, hw_info);
+DEFINE_INFO_ATTRIBUTE(firmware_info, fw_info);
+
void hci_debugfs_create_common(struct hci_dev *hdev)
{
debugfs_create_file("features", 0444, hdev->debugfs, hdev,
@@ -382,6 +409,14 @@
if (lmp_sc_capable(hdev) || lmp_le_capable(hdev))
debugfs_create_file("sc_only_mode", 0444, hdev->debugfs,
hdev, &sc_only_mode_fops);
+
+ if (hdev->hw_info)
+ debugfs_create_file("hardware_info", 0444, hdev->debugfs,
+ hdev, &hardware_info_fops);
+
+ if (hdev->fw_info)
+ debugfs_create_file("firmware_info", 0444, hdev->debugfs,
+ hdev, &firmware_info_fops);
}
static int inquiry_cache_show(struct seq_file *f, void *p)