linux/drivers/usb/common, branch v3.18Mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/
https://git.shady.money/linux/atom?h=v3.182014-09-25T15:05:12Zusb: Add LED triggers for USB activity2014-09-25T15:05:12ZMichal Sojkasojka@merica.cz2014-09-24T20:43:21Zurn:sha1:0cfbd328d60f85b0dcf66df61a3615e9a8e5d4e4
With this patch, USB activity can be signaled by blinking a LED. There
are two triggers, one for activity on USB host and one for USB gadget.
Both triggers should work with all host/device controllers. Tested only
with musb.
Performace: I measured performance overheads on ARM Cortex-A8 (TI
AM335x) running on 600 MHz.
Duration of usb_led_activity():
- with no LED attached to the trigger: 2 ± 1 µs
- with one GPIO LED attached to the trigger: 2 ± 1 µs or 8 ± 2 µs (two peaks in histogram)
Duration of functions calling usb_led_activity() (with this patch
applied and no LED attached to the trigger):
- __usb_hcd_giveback_urb(): 10 - 25 µs
- usb_gadget_giveback_request(): 2 - 6 µs
Signed-off-by: Michal Sojka <sojka@merica.cz>
Acked-by: Felipe Balbi <balbi@ti.com>
Tested-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
usb: Rename usb-common.c2014-09-25T15:02:34ZMichal Sojkasojka@merica.cz2014-09-24T20:43:20Zurn:sha1:aa923ef1aa39473b7d1f413c73a3e1d19ebde65d
In the next commit, we will want the usb-common module to be composed of
two object files. Since Kbuild cannot "append" another object to an
existing one, we need to rename usb-common.c to something
else (common.c) and create usb-common.o by linking the wanted objects
together. Currently, usb-common.o comprises only common.o.
Signed-off-by: Michal Sojka <sojka@merica.cz>
Acked-by: Felipe Balbi <balbi@ti.com>
Tested-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
usb: common: add API to get if the platform supports TPL2014-09-24T04:28:41ZPeter Chenpeter.chen@freescale.com2014-08-19T01:51:55Zurn:sha1:05f8b35a62efb8e70ebcd78e9c957324e9caddad
The TPL (Targeted Peripheral List) is used for targeted hosts
(non-PC hosts), and it can be used at USB OTG & EH certification
and some specific products which need white list.
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
usb: common: rename phy-fsm-usb.c to usb-otg-fsm.c2014-05-27T22:29:44ZPeter Chenpeter.chen@freescale.com2014-04-29T00:35:59Zurn:sha1:1dfa91aa5ba9650acf59b6310d8e78a162d56410
Since usb otg fsm implementation is not related to usb phy.
We move it from usb/phy/ to usb/common/, and rename it to
reflect its real meaning.
Cc: Felipe Balbi <balbi@ti.com>
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
usb: move usb/usb-common.c to usb/common/usb-common.c2014-05-27T22:29:44ZPeter Chenpeter.chen@freescale.com2014-04-29T00:35:58Zurn:sha1:f4cbd33fd5f0587910fa9db403a1b42f1cabf820
Since we will have more usb-common things, and it will let
usb-common.c be larger and larger, we create a folder named usb/common
for all usb common things.
Cc: Felipe Balbi <balbi@ti.com>
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>