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MUSB controller cannot work in DMA mode with misaligned buffers,
switching in PIO mode.
HCD core has hooks that allow to override the default DMA
mapping and unmapping routines for host controllers that have
special DMA requirements, such as alignment constraints.
It is observed that work in PIO mode is slow and it's better
to align buffers properly before passing them to MUSB
This increased throughput 80->120 MBits/s over musb@omap4 with
USB Gigabit Ethernet adapter attached.
Some ideas are taken from ehci-tegra.c
Signed-off-by: Ruslan Bilovol <ruslan.bilovol@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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On some platform configurations (like OMAP3+twl4030) it's the platform
code that enables VBUS, not OTG transceiver, so call vbus platform
callback instead, it will then call the transceiver if needed.
This fixes a use case where USB cable is plugged first and gadget
driver is loaded later after that.
Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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On USB_EVENT_ID event the musb glue enables VBUS by calling
omap2430_musb_set_vbus(musb, 1) that sets the session bit, but on
USB_EVENT_NONE reverse action is never made, and that breaks PM.
Disable VBUS on USB_EVENT_NONE to be sure musb session is ended
on cable unplug so that PM works.
Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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fix the following sparse warning:
drivers/usb/musb/ux500_dma.c:60:6: warning: symbol 'ux500_dma_callback' was not declared. Should it be static?
Signed-off-by: Felipe Balbi <balbi@ti.com>
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VBUS_ERROR is a serious error that the driver often doesn't recover from
in my tests, so we should at least inform the user about it.
Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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Some musb glue drivers use gadget_driver pointer to know if any gadget
drivers are loaded at some moment and base further decisions on it,
like to do runtime suspend/resume or not. Right now the pointer is
left alone on stop and OMAP musb glue later does wrong runtime_pm
decisions because of it.
Clear the gadget_driver pointer on remove, it's invalid after stop
anyway.
Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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As the usb transceiver driver usually starts first, it should already
have default_a variable set according to ID pin state, so don't
override it. In case default_a was not changed by trasceiver, it will
default to 0 and this code will work as before.
Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-linus
Felipe writes:
usb: fixes for v3.9-rc4
udc-core learned that it shouldn't use invalid pointers
when unloading a gadget driver.
net2272 and net2280 got a fix for a regression caused by
the udc_start/udc_stop conversion.
We're defining a static inline no-op for otg_ulpi_create()
to prevent build errors when that driver isn't enabled.
FunctionFS got a fix for an off-by-one error when binding
and unbinding instances of FunctionFS.
MUSB learned that it shouldn't try to unmap buffers which
weren't previously mapped.
f_rndis got a fix for a possible NULL pointer dereference
in a debugging message code.
MUSB's DA8xx glue layer got a build fix due to a typo.
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Update irq handling code to notify all possible link status changes of
AB8500 and AB8505 to the ux500-musb glue driver. The additional event
codes will be used for pm-runtime implementation, and are defined in a
separate ux500-specific header.
This also modify the irq registration code to use devm_* helpers and
drop all non necessary fail path code.
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Fabio Baltieri <fabio.baltieri@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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Add transceiver notifier event handling to the ux500 driver to set vbus
on specific transceiver events.
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Fabio Baltieri <fabio.baltieri@linaro.org>
[ balbi@ti.com: fix build error due to missing
otg_state_string() ]
Signed-off-by: Felipe Balbi <balbi@ti.com>
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Add ux500_musb_set_vbus() implementation for ux500.
This is based on the version originally developed inside ST-Ericsson.
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Fabio Baltieri <fabio.baltieri@linaro.org>
[ balbi@ti.com: fix a build error due to
missing otg_state_string() ]
Signed-off-by: Felipe Balbi <balbi@ti.com>
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Fix dma_controller_create() fail path in case memory resource is
missing.
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Virupax Sadashivpetimath <virupax.sadashivpetimath@stericsson.com>
Signed-off-by: Fabio Baltieri <fabio.baltieri@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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PHY layer no longer returns NULL. It will
return -ENXIO when PHY layer isn't enabled
and we can use that to bail out instead of
request a probe deferral.
Signed-off-by: Felipe Balbi <balbi@ti.com>
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Some PHYs load too early (twl4030) making omap glue to miss cable connect events
if the board is booted with cable connected. So adding usb_phy_init in
omap2430_musb_init lets PHYs to report events once glue is ready.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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No functional change. otg_set_vbus is already protected so removed the
check before calling otg_set_vbus.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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No functional change. Replace *_* with *-* in property names of otg to
follow the general convention.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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there are no more users of CONFIG_USB_OTG_UTILS
left in tree, we can remove it just fine.
[ kishon@ti.com : fixed a linking error due
to original patch forgetting to change
drivers/usb/Makefile ]
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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all other functions under drivers/usb/ start
with usb_, let's do the same thing.
This patch is in preparation for moving otg_state_string
to usb-common.c and deleting otg.c completely.
Signed-off-by: Felipe Balbi <balbi@ti.com>
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CONFIG_USB_MUSB_DEBUG option was removed in
5c8a86e usb: musb: drop unneeded musb_debug trickery
to cleanup the code from driver specific debug facilities. This patch
drops the last references to the musb debug config option,
unconditionally enabling all debug code paths, thus letting that code
being dropped at compile time if not needed.
Signed-off-by: Fabio Baltieri <fabio.baltieri@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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udc-core provides a better way to handle release
methods, let's use it.
Signed-off-by: Felipe Balbi <balbi@ti.com>
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udc-core now sets dma-related and parent fields
for us, we don't need to do it ourselves.
Signed-off-by: Felipe Balbi <balbi@ti.com>
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those glues can build cleanly anywhere.
Signed-off-by: Felipe Balbi <balbi@ti.com>
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Fix the following compile warning:
drivers/usb/musb/musb_gadget.c: In function ‘rxstate’:
drivers/usb/musb/musb_gadget.c:714:22: warning: comparison of distinct pointer types lacks a cast [enabled by default]
Signed-off-by: Felipe Balbi <balbi@ti.com>
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if CONFIG_OF is disabled, np will be unused
and that will give us a compile warning. This
patch just avoids it.
Signed-off-by: Felipe Balbi <balbi@ti.com>
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Fix the following compile warnings:
drivers/usb/musb/ux500_dma.c: In function ‘ux500_configure_channel’:
drivers/usb/musb/ux500_dma.c:96:2: warning: format ‘%x’ expects argument of type ‘unsigned int’, but argument 6 has type ‘dma_addr_t’ [-Wformat]
drivers/usb/musb/ux500_dma.c: In function ‘ux500_dma_is_compatible’:
drivers/usb/musb/ux500_dma.c:195:4: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
Signed-off-by: Felipe Balbi <balbi@ti.com>
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<linux/sizes.h> is the header defining SZ_4
and SZ_16M, we shouldn't depend on indirect
inclusion so let's explicitly include it.
Signed-off-by: Felipe Balbi <balbi@ti.com>
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those two glues are still including <mach/>
headers and no active developement has been
going on those glues for quite some time.
Apparently, for da8xx glue, only initial commit
3ee076de (usb: musb: introduce DA8xx/OMAP-L1x
glue layer) has been tested. All other patches
seem to have been compile-tested only.
For davinci glue layer, last real commit dates
back from 2010, with commit f405387 (USB: MUSB:
fix kernel WARNING/oops when unloading module
in OTG mode).
Signed-off-by: Felipe Balbi <balbi@ti.com>
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MUSB still needs lots of work on the DMA part
if we want to enable multiple DMA engines on
a multiplatform kernel. Meanwhile, we're forcing
PIO-only so that we, at least, have a working
driver.
Signed-off-by: Felipe Balbi <balbi@ti.com>
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Those comments haven't been updated for a long
time, so much that they don't make sense anymore.
Best to remove them.
Signed-off-by: Felipe Balbi <balbi@ti.com>
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this will make sure that request_memory_region() will
be called and that we don't need to manually call
iounmap() on ->remove().
Signed-off-by: Felipe Balbi <balbi@ti.com>
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there's really no need for that message. It's
been a while since it printed something useful.
Signed-off-by: Felipe Balbi <balbi@ti.com>
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We don't need the ->register_my_device flag
anymore because all UDC drivers have been
properly converted.
Let's remove every history of it.
Signed-off-by: Felipe Balbi <balbi@ti.com>
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By simply setting a flag, we can delete a little
boilerplate code.
Signed-off-by: Felipe Balbi <balbi@ti.com>
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musb does not use DMA buffer for ep0 but it uses the same giveback
function *musb_g_giveback* for all endpoints (*musb_g_ep0_giveback* calls
*musb_g_giveback*). So for ep0 case request.dma will be '0'
and will result in kernel OOPS if tried to *unmap_dma_buffer* for requests in
ep0. Fixed it by doing *unmap_dma_buffer* only for valid DMA addr and
checking that musb_ep->dma is valid when unmapping.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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Commit 032ec49f5351e9cb242b1a1c367d14415043ab95 (usb: musb: drop useless
board_mode usage) introduced a typo that breaks the build.
Signed-off-by: Mikhail Kshevetskiy <mikhail.kshevetskiy@gmail.com>
[ Fixed commit message ]
Cc: Mikhail Kshevetskiy <mikhail.kshevetskiy@gmail.com>
Cc: Sergei Shtylyov <sshtylyov@mvista.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: stable@vger.kernel.org
Signed-off-by: Michael Riesch <michael.riesch@omicron.at>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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when making commit e574d57 (usb: musb: fix
compile warning) I forgot to git add this
part of the patch which ended up introducing
a possible build error.
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Fix the following sparse warning:
drivers/usb/musb/omap2430.c:54:33: warning: symbol '_glue' was not \
declared. Should it be static?
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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Commit 80ab72e1 (usb: musb: omap2430: fix the readiness check
in omap_musb_mailbox) made the check incorrect, as we will lose the
glue/link status during the normal built-in probe order (twl4030_usb is
probed after musb omap2430, but before musb core is ready).
As a result, if you boot with USB cable on and load g_ether, the
connection does not work as the code thinks the cable is off and the
phy gets powered down immediately. This is a major regression in 3.9-rc1.
So the proper check should be: exit if _glue is NULL, but if it's
initialized we memorize the status, and then check if the musb core
is ready.
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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When running 100 randconfig iterations, I found
the following warning:
drivers/usb/musb/musb_core.c: In function ‘musb_init_controller’:
drivers/usb/musb/musb_core.c:1981:1: warning: label ‘fail5’ defined \
but not used [-Wunused-label]
this patch fixes it by removing the unnecessary
ifdef CONFIG_SYSFS.
Signed-off-by: Felipe Balbi <balbi@ti.com>
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those are quite unnecessary, the only thing
we need to be careful about is USB_OTG_UTILS
which get properly selected by PHY drivers.
For now, MUSB will select only USB_OTG_UTILS
until we add stubs for the cases when PHY
layer isn't enabled.
Signed-off-by: Felipe Balbi <balbi@ti.com>
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Currently it is possible to have:
USB_MUSB_OMAP2PLUS=m
TWL4030_USB=y
which would result compile time error due to missing symbols.
With this change USB_MUSB_OMAP2PLUS and TWL4030_USB will be in sync.
Reported-by: Vincent Stehle <v-stehle@ti.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB patches from Greg Kroah-Hartman:
"Here's the big USB merge for 3.9-rc1
Nothing major, lots of gadget fixes, and of course, xhci stuff.
All of this has been in linux-next for a while, with the exception of
the last 3 patches, which were reverts of patches in the tree that
caused problems, they went in yesterday."
* tag 'usb-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (190 commits)
Revert "USB: EHCI: make ehci-vt8500 a separate driver"
Revert "USB: EHCI: make ehci-orion a separate driver"
Revert "USB: update host controller Kconfig entries"
USB: update host controller Kconfig entries
USB: EHCI: make ehci-orion a separate driver
USB: EHCI: make ehci-vt8500 a separate driver
USB: usb-storage: unusual_devs update for Super TOP SATA bridge
USB: ehci-omap: Fix autoloading of module
USB: ehci-omap: Don't free gpios that we didn't request
USB: option: add Huawei "ACM" devices using protocol = vendor
USB: serial: fix null-pointer dereferences on disconnect
USB: option: add Yota / Megafon M100-1 4g modem
drivers/usb: add missing GENERIC_HARDIRQS dependencies
USB: storage: properly handle the endian issues of idProduct
testusb: remove all mentions of 'usbfs'
usb: gadget: imx_udc: make it depend on BROKEN
usb: omap_control_usb: fix compile warning
ARM: OMAP: USB: Add phy binding information
ARM: OMAP2: MUSB: Specify omap4 has mailbox
ARM: OMAP: devices: create device for usb part of control module
...
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Add a couple of missing GENERIC_HARDIRQS dependencies to fix link
errors like below on s390:
ERROR: "devm_request_threaded_irq" [drivers/usb/gadget/mv_udc.ko] undefined!
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This resolves a gpio driver merge issue pointed out in linux-next.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This fixes up a conflict with drivers/usb/serial/io_ti.c that came up in
linux-next.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next
Felipe writes:
usb: xceiv: patches for v3.9 merge window
Two new PHY drivers coming here: one for Samsung,
one for OMAP. Both architectures are adding USB3
support to mainline kernel.
The PHY layer now allows us to have mulitple PHYs
of the same type, which is necessary for platforms
which provide more than one USB peripheral port.
There's also a few cleanups here: removal of __dev*
annotations, conversion of a cast to to_delayed_work(),
and mxs-phy learns about ->set_suspend.
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git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next
Felipe writes:
usb: musb: patches for v3.9 merge window
Mostly fixes all over which weren't urgent enough for
the late -rc cycle.
There is a Double Buffering fix for Host Mode TX,
a dependency fix for the transceiver driver, some
fixes to the error path and a fix for the use of
omap_musb_maibox.
Other than these fixes, there a removal duplicate
headers from the dsps glue layer and removal of
redundant assignments in omap2430_probe().
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The OMAP glue has been modified to get PHY by phandle
for dt boot.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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New PHY lib APIs like usb_add_phy_dev() and devm_usb_get_phy_dev() are
used in MUSB (OMAP), in order to make use of the binding information
provided in the board file (of OMAP platforms).
All the platforms should be modified similar to this to add and get the
PHY.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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Start using the control module driver for powering on the PHY and for
writing to the mailbox instead of writing to the control module
registers on their own.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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