[PATCH v2 2/5] Bluetooth: Expose default connection latency setting via debugfs
From: Marcel Holtmann <marcel@holtmann.org>
Date: 2014-06-30 10:34:37
Subsystem:
bluetooth subsystem, the rest · Maintainers:
Marcel Holtmann, Luiz Augusto von Dentz, Linus Torvalds
The controller has a default value for the connection latency. Expose this via debugfs for testing purposes. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> --- net/bluetooth/hci_core.c | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+)
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 94551c33c4c6..79d292cfb867 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c@@ -851,6 +851,34 @@ static int conn_max_interval_get(void *data, u64 *val) DEFINE_SIMPLE_ATTRIBUTE(conn_max_interval_fops, conn_max_interval_get, conn_max_interval_set, "%llu\n"); +static int conn_latency_set(void *data, u64 val) +{ + struct hci_dev *hdev = data; + + if (val > 0x01f3) + return -EINVAL; + + hci_dev_lock(hdev); + hdev->le_conn_latency = val; + hci_dev_unlock(hdev); + + return 0; +} + +static int conn_latency_get(void *data, u64 *val) +{ + struct hci_dev *hdev = data; + + hci_dev_lock(hdev); + *val = hdev->le_conn_latency; + hci_dev_unlock(hdev); + + return 0; +} + +DEFINE_SIMPLE_ATTRIBUTE(conn_latency_fops, conn_latency_get, + conn_latency_set, "%llu\n"); + static int adv_channel_map_set(void *data, u64 val) { struct hci_dev *hdev = data;
@@ -1708,6 +1736,8 @@ static int __hci_init(struct hci_dev *hdev) hdev, &conn_min_interval_fops); debugfs_create_file("conn_max_interval", 0644, hdev->debugfs, hdev, &conn_max_interval_fops); + debugfs_create_file("conn_latency", 0644, hdev->debugfs, + hdev, &conn_latency_fops); debugfs_create_file("adv_channel_map", 0644, hdev->debugfs, hdev, &adv_channel_map_fops); debugfs_create_file("device_list", 0444, hdev->debugfs, hdev,
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1.9.3