diff options
Diffstat (limited to '0001-Bluetooth-btusb-Add-a-Kconfig-option-to-enable-USB-a.patch')
| -rw-r--r-- | 0001-Bluetooth-btusb-Add-a-Kconfig-option-to-enable-USB-a.patch | 90 |
1 files changed, 0 insertions, 90 deletions
diff --git a/0001-Bluetooth-btusb-Add-a-Kconfig-option-to-enable-USB-a.patch b/0001-Bluetooth-btusb-Add-a-Kconfig-option-to-enable-USB-a.patch deleted file mode 100644 index 1f94c3d70..000000000 --- a/0001-Bluetooth-btusb-Add-a-Kconfig-option-to-enable-USB-a.patch +++ /dev/null @@ -1,90 +0,0 @@ -From 20eeb02a0a489e35de0830b2d61f09d43763c982 Mon Sep 17 00:00:00 2001 -From: Hans de Goede <hdegoede@redhat.com> -Date: Mon, 13 Nov 2017 09:23:19 +0100 -Subject: [PATCH] Bluetooth: btusb: Add a Kconfig option to enable USB - autosuspend by default - -On many laptops the btusb device is the only USB device not having USB -autosuspend enabled, this causes not only the HCI but also the USB -controller to stay awake, together using aprox. 0.4W of power. - -Modern ultrabooks idle around 6W (at 50% screen brightness), 3.5W for -Apollo Lake devices. 0.4W is a significant chunk of this (7 / 11%). - -The btusb driver already contains code to allow enabling USB autosuspend, -but currently leaves it up to the user / userspace to enable it. This -means that for most people it will not be enabled, leading to an -unnecessarily high power consumption. - -Since enabling it is not entirely without risk of regressions, this -commit adds a Kconfig option so that Linux distributions can choose to -enable it by default. This commit also adds a module option so that when -distros receive bugs they can easily ask the user to disable it again -for easy debugging. - -Signed-off-by: Hans de Goede <hdegoede@redhat.com> ---- -Changes in v2: --s/BT_USB_AUTOSUSPEND/BT_HCIBTUSB_AUTOSUSPEND/ --s/enable_usb_autosuspend/enable_autosuspend/ ---- - drivers/bluetooth/Kconfig | 10 ++++++++++ - drivers/bluetooth/btusb.c | 7 +++++++ - 2 files changed, 17 insertions(+) - -diff --git a/drivers/bluetooth/Kconfig b/drivers/bluetooth/Kconfig -index 6475f8c0d3b2..20940417d937 100644 ---- a/drivers/bluetooth/Kconfig -+++ b/drivers/bluetooth/Kconfig -@@ -30,6 +30,16 @@ config BT_HCIBTUSB - Say Y here to compile support for Bluetooth USB devices into the - kernel or say M to compile it as module (btusb). - -+config BT_HCIBTUSB_AUTOSUSPEND -+ bool "Enable USB autosuspend for Bluetooth USB devices by default" -+ depends on BT_HCIBTUSB -+ help -+ Say Y here to enable USB autosuspend for Bluetooth USB devices by -+ default. -+ -+ This can be overridden by passing btusb.enable_autosuspend=[y|n] -+ on the kernel commandline. -+ - config BT_HCIBTUSB_BCM - bool "Broadcom protocol support" - depends on BT_HCIBTUSB -diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c -index c054d7bce490..3386034a44aa 100644 ---- a/drivers/bluetooth/btusb.c -+++ b/drivers/bluetooth/btusb.c -@@ -40,6 +40,7 @@ - - static bool disable_scofix; - static bool force_scofix; -+static bool enable_autosuspend = IS_ENABLED(CONFIG_BT_HCIBTUSB_AUTOSUSPEND); - - static bool reset = true; - -@@ -3175,6 +3176,9 @@ static int btusb_probe(struct usb_interface *intf, - } - #endif - -+ if (enable_autosuspend) -+ usb_enable_autosuspend(data->udev); -+ - err = hci_register_dev(hdev); - if (err < 0) - goto out_free_dev; -@@ -3387,6 +3391,9 @@ MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size"); - module_param(force_scofix, bool, 0644); - MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size"); - -+module_param(enable_autosuspend, bool, 0644); -+MODULE_PARM_DESC(enable_autosuspend, "Enable USB autosuspend by default"); -+ - module_param(reset, bool, 0644); - MODULE_PARM_DESC(reset, "Send HCI reset command on initialization"); - --- -2.14.3 - |