| 538bf07d897008e87eca49cde5970545f3814ac7 |
|
02-Apr-2013 |
Ravi Babu <ravibabu@ti.com> |
usb: musb: gadget: read ep0 fifo only if rxcount is non zero
avoid reading fifo rxcount is zero of fifo is empty, hence
read fifo only if rxcount is non-zero
Signed-off-by: Ravi Babu <ravibabu@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
|
| 515ba29cd7b571da45365e4db80c1b6905869ef3 |
|
30-Oct-2012 |
Sebastian Andrzej Siewior <bigeasy@linutronix.de> |
usb: musb: avoid FADDR read access
This is part of the workaround for AM35x advisory Advisory 1.1.20.
The advisory says that the IPSS bridge can't handle 8 & 16 bit read
access. An 8bit read access to FADDR results in an 32bit read
access which also reads INTRTX and therefore may lose interrupts.
This patch removes any reads to FADDR as they are not really required.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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| 7d5b49a202c4201a8afc36f9e55624894aba9fb5 |
|
14-Oct-2011 |
Felipe Balbi <balbi@ti.com> |
usb: musb: headers cleanup
Remove a few unnecessary headers from a
few files.
Signed-off-by: Felipe Balbi <balbi@ti.com>
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| de76cc2ba2116322f1bcc26f5b22d6092bb63a0d |
|
02-Sep-2011 |
Hans Petter Selasky <hselasky@c2i.net> |
musb_gadget: Fix for spurious interrupts on endpoint zero.
There is a multi-year old bug in the MUSB hardware which is not documented.
It causes spurious interrupts and have various symptoms, like endless
"SetupEnd came in a wrong ep0stage" messages. The fix is taken from the
FreeBSD's musb driver.
How to reproduce:
For example issue clear-stall on a couple of endpoints very fast,
like one request per 125us. After a while the bug triggers and the
musb-chip becomes unusable until next re-enumeration.
Signed-off-by: Hans Petter Selasky <hps@bitfrost.no>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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| 622859634a663c5e55d0e2a2cdbb55ac058d97b3 |
|
22-Jun-2011 |
Felipe Balbi <balbi@ti.com> |
usb: musb: drop a gigantic amount of ifdeferry
the MUSB IP is always OTG, so there's no point
in adding so many ifdefs on the code. Drop those
and always compile the driver for OTG support.
This also allows us to drop the useless "driver
mode" choice. For doing that, we need to make
musb depend on both Host and Peripheral side.
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
|
| 5c8a86e10a7c164f44537fabdc169fd8b4e7a440 |
|
10-May-2011 |
Felipe Balbi <balbi@ti.com> |
usb: musb: drop unneeded musb_debug trickery
We have a generic way of enabling/disabling
different debug messages on a driver called
DYNAMIC_PRINTK. Anyone interested in enabling
just part of the debug messages, please read
the documentation under:
Documentation/dynamic-debug-howto.txt
for information on how to use that great
infrastructure.
Signed-off-by: Felipe Balbi <balbi@ti.com>
|
| ad1adb89a0d9410345d573b6995a1fa9f9b7c74a |
|
15-Feb-2011 |
Felipe Balbi <balbi@ti.com> |
usb: musb: gadget: do not poke with gadget's list_head
struct usb_request's list_head is supposed to be
used only by gadget drivers, but musb is abusing
that. Give struct musb_request its own list_head
and prevent musb from poking into other driver's
business.
Signed-off-by: Felipe Balbi <balbi@ti.com>
|
| a666e3e6098a9f56310e4ec2705f1dad124a34b5 |
|
11-Sep-2010 |
Sergei Shtylyov <sshtylyov@ru.mvista.com> |
usb: musb: gadget: restart request on clearing endpoint halt
Commit 46034dca515bc4ddca0399ae58106d1f5f0d809f (USB: musb_gadget_ep0: stop
abusing musb_gadget_set_halt()) forgot to restart a queued request after
clearing the endpoint halt feature. This results in a couple of USB resets
while enumerating the file-backed storage gadget due to CSW packet not being
sent for the MODE SENSE(10) command.
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: stable@kernel.org
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
|
| d0390d92bf548a903a48e1a2b3a12eff8a9d838b |
|
12-Jul-2010 |
stephane duverger <stephane.duverger@gmail.com> |
USB: musb: forward debug mode feature to gadget
This is a patch for the musb usb controller.
It allows forwarding of the debug mode feature to its gadget in order
to be able to act as an ehci debug device.
This patch has been tested on an IGEPv2 board running a 2.6.35-rc1
kernel.
Signed-off-by: Stephane Duverger <stephane.duverger@gmail.com>
Cc: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
|
| ca4b2532fb0e2d62370d9825147ffa9b9d9e3880 |
|
12-Mar-2010 |
Felipe Balbi <felipe.balbi@nokia.com> |
usb: musb: gadget: support musb-specific test modes
we can support the musb-specific test modes on the
vendor specific range of test selector as stated
on USB Specification Table 9-7 Test Mode Selectors.
Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
|
| 17be5c5f5ef99c94374e07f71effa78e93a20eda |
|
15-Dec-2009 |
Sergei Shtylyov <sshtylyov@ru.mvista.com> |
USB: musb: gadget_ep0: avoid SetupEnd interrupt
Gadget stalling a zero-length SETUP request results in this error message:
SetupEnd came in a wrong ep0stage idle
In order to avoid it, always set the CSR0.DataEnd bit after detecting a zero-
length request. Add the missing '\n' to the error message itself as well...
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Acked-by: Anand Gadiyar <gadiyar@ti.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
|
| 46034dca515bc4ddca0399ae58106d1f5f0d809f |
|
18-Nov-2009 |
Sergei Shtylyov <sshtylyov@ru.mvista.com> |
USB: musb_gadget_ep0: stop abusing musb_gadget_set_halt()
Stop playing with musb->lock and abusing musb_gadget_set_halt() in
the code clearing the endpoint halt feature -- instead, manipulate
the registers directly.
While at it, get rid uf unneeded line breaks and over-indentation in
the code setting the endpoint halt feature.
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
|
| 47e9760529a9823be59d879f726acdc7e2fcbe11 |
|
18-Nov-2009 |
Sergei Shtylyov <sshtylyov@ru.mvista.com> |
USB: musb_gadget: implement set_wedge() method
Implement the driver's set_wedge() method by adding the 'wedged' flag
to the 'struct musb_ep'.
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
|
| 196f1b7a387546f425df2f1fad26772e3d513aea |
|
16-Nov-2009 |
Sergei Shtylyov <sshtylyov@ru.mvista.com> |
USB: musb_gadget_ep0: fix unhandled endpoint 0 IRQs, again
Commit a5073b52833e4df8e16c93dc4cbb7e0c558c74a2 (musb_gadget: fix
unhandled endpoint 0 IRQs) somehow missed its key change:
"The gadget EP0 code routinely ignores an interrupt at end of
the data phase because of musb_g_ep0_giveback() resetting the
state machine to "idle, waiting for SETUP" phase prematurely."
So, the majority of the cases of unhandled IRQs is still unfixed...
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Anand Gadiyar <gadiyar@ti.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
|
| 5542bc2ac7b52c021fc9c7a96329955491b7e763 |
|
17-Nov-2009 |
Daniel Glöckner <dg@emlix.com> |
USB: musb: respect usb_request->zero in control requests
In gadget mode the answer to a control request should be followed by
a zero-length packet if the amount transferred is an exact multiple of
the endpoint's packet size and the requests has its "zero" flag set.
This patch prevents the request from being immediately removed from the
queue when a control IN transfer ends on a full packet and "zero" is set.
The next time ep0_txstate is entered, a zero-length packet is queued and
the request is removed as fifo_count is 0.
Signed-off-by: Daniel Glöckner <dg@emlix.com>
Signed-off-by: Ajay Kumar Gupta <ajay.gupta@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
|
| f01b017d198486ee3553bee6841f788263cf2c23 |
|
17-Jul-2009 |
Sergei Shtylyov <sshtylyov@ru.mvista.com> |
USB: musb_gadget_ep0: fix typo in service_zero_data_request()
This function uses wrong bit mask to prevent clearing RXCSR status
bits when halting an endpoint -- which results in clearing SentStall
and RxPktRdy bits (that the code actually tries to avoid); must be
a result of cut-and-paste...
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
|
| a5073b52833e4df8e16c93dc4cbb7e0c558c74a2 |
|
27-Mar-2009 |
Sergei Shtylyov <sshtylyov@ru.mvista.com> |
musb_gadget: fix unhandled endpoint 0 IRQs
The gadget EP0 code routinely ignores an interrupt at end of
the data phase because of musb_g_ep0_giveback() resetting the
state machine to "idle, waiting for SETUP" phase prematurely.
The driver also prematurely leaves the status phase on
receiving the SetupEnd interrupt.
As there were still unhandled endpoint 0 interrupts happening
from time to time after fixing these issues, there turned to
be yet another culprit: two distinct gadget states collapsed
into one.
The (missing) state that comes after STATUS IN/OUT states was
typically indiscernible from them since the corresponding
interrupts tend to happen within too little period of time
(due to only a zero-length status packet in between) and so
they got coalesced; yet this state is not the same as the next
one which is associated with the reception of a SETUP packet.
Adding this extra state seems to have fixed the rest of the
unhandled interrupts that generic_interrupt() and
davinci_interrupt() hid by faking their result and only
emitting a debug message -- so, stop doing that.
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
|
| 64ca44a65adf131c4df5124fe0fcdc3896f0f0dc |
|
11-Sep-2008 |
Bryan Wu <cooloney@kernel.org> |
usb: musb: do not mess up count number and CSR0 register value
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
|
| fb85d991616046f1b640ed9c4eab9b44908dab74 |
|
21-Aug-2008 |
Anand Gadiyar <gadiyar@ti.com> |
MUSB: Fix index register corruption seen with g_ether and Windows host
If Indexed Mode register accesses are enabled, the ep0_rxstate()
function calls musb_g_ep0_giveback() before writing to the CSR
register. When control returns to this ep0_rxstate, the index
register contents are over-written. This causes the CSR register
write to fail.
Fixed by writing the correct value into the index register before
writing to the CSR.
This was observed only in ep0_rxstate() with g_ether loaded and
the device connected to a MS Windows host PC. Anticipatively fixed
ep0_txstate() as well.
Signed-off-by: Anand Gadiyar <gadiyar@ti.com>
Acked-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
|
| 550a7375fe720924241f0eb76e4a5c1a3eb8c32f |
|
23-Jul-2008 |
Felipe Balbi <felipe.balbi@nokia.com> |
USB: Add MUSB and TUSB support
This patch adds support for MUSB and TUSB controllers
integrated into omap2430 and davinci. It also adds support
for external tusb6010 controller.
Cc: David Brownell <dbrownell@users.sourceforge.net>
Cc: Tony Lindgren <tony@atomide.com>
Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
|