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It's good to have SPDX identifiers in all files to make it easier to
audit the kernel tree for correct licenses.
Update the drivers/usb/ and include/linux/usb* files with the correct
SPDX license identifier based on the license text in the file itself.
The SPDX identifier is a legally binding shorthand, which can be used
instead of the full boiler plate text.
This work is based on a script and data from Thomas Gleixner, Philippe
Ombredanne, and Kate Stewart.
Cc: Thomas Gleixner <[email protected]>
Cc: Kate Stewart <[email protected]>
Cc: Philippe Ombredanne <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
Acked-by: Felipe Balbi <[email protected]>
Acked-by: Johan Hovold <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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If usb/otg-fsm.h and usb/composite.h are included together
then it results in the build warning [1].
Prevent that by defining VDBG locally.
Also get rid of MPC_LOC which doesn't seem to be used
by anyone.
[1] - warning fixed by this patch:
In file included from drivers/usb/dwc3/core.h:33,
from drivers/usb/dwc3/ep0.c:33:
include/linux/usb/otg-fsm.h:30:1: warning: "VDBG" redefined
In file included from drivers/usb/dwc3/ep0.c:31:
include/linux/usb/composite.h:615:1: warning: this is the location
of the previous definition
Signed-off-by: Roger Quadros <[email protected]>
Reviewed-by: Jun Li <[email protected]>
Acked-by: Peter Chen <[email protected]>
Signed-off-by: Felipe Balbi <[email protected]>
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Move the state_changed variable into struct otg_fsm
so that we can support multiple instances.
Signed-off-by: Roger Quadros <[email protected]>
Acked-by: Peter Chen <[email protected]>
Signed-off-by: Peter Chen <[email protected]>
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struct otg_fsm is the interface to the OTG state machine.
Document the input, output and internal state variables.
Definations are taken from Table 7-2 and Table 7-4 of
the USB OTG & EH Specification Rev.2.0
Re-arrange some of the members as per use case for more
clarity.
Signed-off-by: Roger Quadros <[email protected]>
Acked-by: Peter Chen <[email protected]>
Signed-off-by: Peter Chen <[email protected]>
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Add A-idle to B-disconnect timer, B-device detects that bus is idle
for more than TB_AIDL_BDIS min and begins HNP by turning off pullup
on D+. This allows the bus to discharge to the SE0 state.
Acked-by: Peter Chen <[email protected]>
Signed-off-by: Li Jun <[email protected]>
Signed-off-by: Felipe Balbi <[email protected]>
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Adds HNP polling timer when transits to host state, the OTG status
request will be sent to peripheral after timeout, if host request flag
is set, it will switch to peripheral state, otherwise it will repeat HNP
polling every 1.5s and maintain the current session.
Acked-by: Peter Chen <[email protected]>
Signed-off-by: Li Jun <[email protected]>
Signed-off-by: Felipe Balbi <[email protected]>
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B_DATA_PLS(data-line pulse time) and B_SSEND_SRP(session end to SRP init) are
also from OTG&EH 2.0 Specification and they are not chipidea specific.
Signed-off-by: Li Jun <[email protected]>
Signed-off-by: Peter Chen <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Other USB drivers may want to use OTG final state machine
implementation, so make this header available for them.
Signed-off-by: Anton Tikhomirov <[email protected]>
Signed-off-by: Felipe Balbi <[email protected]>
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