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This driver implements PHY initialization, clock management, ULPI IO ops
and simple OTG state machine to kick host/peripheral based on Id/VBUS
line status. VBUS/Id lines are tied to a reference voltage on some boards.
Hence provide debugfs interface to select host/peripheral mode.
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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When ASPM PM Feature is enabled on UMI link, devices that use ISOC stream of
data transfer may be exposed to longer latency causing less than optimal per-
formance of the device. The longer latencies are normal and are due to link
wake time coming out of low power state which happens frequently to save
power when the link is not active.
The following code will make exception for certain features of ASPM to be by
passed and keep the logic normal state only when the ISOC device is connected
and active. This change will allow the device to run at optimal performance
yet minimize the impact on overall power savings.
Signed-off-by: Alex He <alex.he@amd.com>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This patch fixes a build failure[1] by adding the missing uaccess.h needed
for copy_from_user and copy_to_user
References:
http://kisskb.ellerman.id.au/kisskb/buildresult/3607218/
Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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IS_ERR() already implies unlikely(), so it can be omitted here.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Fixed coding style issues (delete trailing whitespaces, break
long line)
Signed-off-by: Tobias Ollmann <tobias.ollmann@gmx.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Commit 06c3859 (usb: gadget/imx-udc: remove usage of deprecated symbol
USBD_INT0) was a bit precipitant because the name used instead didn't
match the usual naming scheme for irqs on arm/imx. I renamed the irq to
the right name in e083000 (ARM: imx: dynamically allocate imx_udc
device) when 06c3859 didn't hit Linus' tree, so I missed to add a
compat #define.
This patch allows compiling imx_udc.c with and without e083000.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Annotate whci_hcd_id_table as '__used' to fix following warning:
CC drivers/usb/host/whci/hcd.o
drivers/usb/host/whci/hcd.c:359: warning: ‘whci_hcd_id_table’ defined but not used
Signed-off-by: Namhyung Kim <namhyung@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Add FTDI PID to identify D.O.Tec devices correctly.
Signed-off-by: Florian Faber <faberman@linuxproaudio.org>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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OMAP4430 supports UTMI and ULPI types of transceiver interface.
In UTMI mode: The PHY is embedded within OMAP4430. The transceiver functionality
is split between the twl6030 PMIC chip and OMAP4430. The VBUS, ID pin
sensing and OTG SRP generation part is integrated in TWL6030 and UTMI PHY
functionality is embedded within the OMAP4430.
There is no direct interactions between the MUSB controller and TWL6030
chip to communicate the session-valid, session-end and ID-GND events.
It has to be done through a software by setting/resetting bits in
one of the control module register of OMAP4430 which in turn toggles
the appropriate signals to MUSB controller.
musb driver is register for blocking notifications from the transceiver
driver to get the event notifications for connect/disconnect and ID-GND.
Based on these events call the transceiver init/shutdown function to
configure the transceiver to toggle the VBUS valid, session end and ID_GND
signals to musb and power on/off the internal PHY.
For ID_GND event notifications, toggle the ID_GND signal and then wait for
musb to be configured as "A" device, and then call the transceiver function
to set the VBUS.
In OTG mode and musb as a host, When the Micro A connector used, VBUS is turned on
and session bit set. When the device is connected, enumeration goes through.
When the device disconnected from the other end of the connector(ID is still grounded),
link will detect the disconnect and end the session. When the device is connected back,
there are no events generated in the TWL6030-usb, and link is already down.
So the device is not detected. Removed the session bit disable code which
will recognize the connect of the device.
Limitation: In OTG host mode, if device is connected during boot, it does not get
detected. If disconnect and connect it back or connect after boot only it works.
Fix for this, I will submit seperate patch later.
Signed-off-by: Hema HK <hemahk@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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Add the twl6030_usb transceiver file for compilation.
Signed-off-by: Hema HK <hemahk@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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Selecting the twl6030-usb for OMAP4430SDP and OMAP4PANDA boards and
adding OMAP4 internal phy code for compilation
Signed-off-by: Hema HK <hemahk@ti.com>
Cc: Tony Lindgren <tony@atomide.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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Added the TWL6030-usb transceiver option in the Kconfig
Signed-off-by: Hema HK <hemahk@ti.com>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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Adding the twl6030-usb transceiver support for OMAP4 musb driver.
OMAP4 supports 2 types of transceiver interface.
1. UTMI: The PHY is embedded within OMAP4. The transceiver functionality
is split between the twl6030 PMIC chip and OMAP4430. The VBUS, ID pin
sensing and OTG SRP generation part is integrated in TWL6030 and UTMI PHY
functionality is embedded within the OMAP4430.
There is no direct interactions between the MUSB controller and TWL6030
chip to communicate the session-valid, session-end and ID-GND events.
It has to be done through a software by setting/resetting bits in
one of the control module register of OMAP4430 which in turn toggles
the appropriate signals to MUSB controller.
The internal transceiver has functional clocks and
powerdown bits to powerdown the PHY for power saving.
Since there is no option available for having 2 transceiver drivers
for one USB controller, internal PHY specific APIs are passed through
plaform_data function pointers to use in the twl6030-usb transceiver
driver.
2. ULPI interface is provided for off-chip transceivers.
Signed-off-by: Hema HK <hemahk@ti.com>
Cc: Tony Lindgren <tony@atomide.com>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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Initial support for u8500 and u5500 platform.
Signed-off-by: Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com>
Acked-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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commit 4814ced5116e3b73dc4f63eec84999739fc8ed11 (OMAP:
control: move plat-omap/control.h to mach-omap2/control.h)
moved <plat/control.h> to another location, preventing
drivers from accessing it, so we need to pass function
pointers from arch code to be able to talk to internal
PHY on AM35x.
Signed-off-by: Ajay Kumar Gupta <ajay.gupta@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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that's not used anymore. So let's drop it.
Signed-off-by: Felipe Balbi <balbi@ti.com>
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all glue layers are now fully moved to the
new setup. We are now using dev_pm_ops to
implement suspend/resume functionality and
thus, musb_platform_suspend/resume has become
deprecated and useless.
This patch drops those function pointers and
its uses.
Signed-off-by: Felipe Balbi <balbi@ti.com>
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instead of using musb_platform_suspend_resume,
we can use dev_pm_ops and let platform_device
core handle when to call musb_core's suspend and
glue layer's suspend.
Signed-off-by: Felipe Balbi <balbi@ti.com>
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instead of using musb_platform_suspend_resume,
we can use dev_pm_ops and let platform_device
core handle when to call musb_core's suspend and
glue layer's suspend.
Signed-off-by: Felipe Balbi <balbi@ti.com>
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instead of using musb_platform_suspend/resume,
we can use dev_pm_ops and let the platform_device
core handle when to call musb_core's suspend and
glue layer's suspend.
Signed-off-by: Felipe Balbi <balbi@ti.com>
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we don't need those nops, so drop them.
Signed-off-by: Felipe Balbi <balbi@ti.com>
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those aren't used outside musb_core.c, so mark
them as static.
Signed-off-by: Felipe Balbi <balbi@ti.com>
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... that can be easily folded into the
musb_platform_suspend/resume calls.
Signed-off-by: Felipe Balbi <balbi@ti.com>
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now that platform glue layer handles
clock completely, that function is completely
useless for us. Drop it.
Signed-off-by: Felipe Balbi <balbi@ti.com>
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musb core doesn't need to know about platform
specific details. So start moving clock
handling to platform glue layer and make
musb core agnostic about that.
Signed-off-by: Felipe Balbi <balbi@ti.com>
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... then we don't need to export any symbols
from glue layer to musb_core.
Signed-off-by: Felipe Balbi <balbi@ti.com>
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that structure currently only holds a device
pointer to our own platform_device and musb's
platform_device, but soon it will hold pointers
to our clock structures and glue-specific bits
and pieces.
Signed-off-by: Felipe Balbi <balbi@ti.com>
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that structure currently only holds a device
pointer to our own platform_device and musb's
platform_device, but soon it will hold pointers
to our clock structures and glue-specific bits
and pieces.
Signed-off-by: Felipe Balbi <balbi@ti.com>
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that structure currently only holds a device
pointer to our own platform_device and musb's
platform_device, but soon it will hold pointers
to our clock structures and glue-specific bits
and pieces.
Signed-off-by: Felipe Balbi <balbi@ti.com>
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that structure currently only holds a device
pointer to our own platform_device and musb's
platform_device, but soon it will hold pointers
to our clock structures and glue-specific bits
and pieces.
Signed-off-by: Felipe Balbi <balbi@ti.com>
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that structure currently only holds a device
pointer to our own platform_device and musb's
platform_device, but soon it will hold pointers
to our clock structures and glue-specific bits
and pieces.
Signed-off-by: Felipe Balbi <balbi@ti.com>
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that structure currently only holds a device
pointer to our own platform_device and musb's
platform_device, but soon it will hold pointers
to our clock structures and glue-specific bits
and pieces.
Signed-off-by: Felipe Balbi <balbi@ti.com>
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Just adding its own platform_driver, not really
using it yet.
Later patches will come to split power management
code from musb_core and move it completely to HW
glue layer.
Signed-off-by: Felipe Balbi <balbi@ti.com>
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Just adding its own platform_driver, not really
using it yet.
When all HW glue layers are converted, more patches
will come to split power management code from musb_core
and move it completely to HW glue layer.
Signed-off-by: Felipe Balbi <balbi@ti.com>
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Just adding its own platform_driver, not really
using it yet.
When all HW glue layers are converted, more patches
will come to split power management code from musb_core
and move it completely to HW glue layer.
Signed-off-by: Felipe Balbi <balbi@ti.com>
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Just adding its own platform_driver, not really
using it yet.
When all HW glue layers are converted, more patches
will come to split power management code from musb_core
and move it completely to HW glue layer.
Signed-off-by: Felipe Balbi <balbi@ti.com>
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Just adding its own platform_driver, not really
using it yet.
When all HW glue layers are converted, more patches
will come to split power management code from musb_core
and move it completely to HW glue layer.
Signed-off-by: Felipe Balbi <balbi@ti.com>
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Just adding its own platform_driver, not really
using it yet.
When all HW glue layers are converted, more patches
will come to split power management code from musb_core
and move it completely to HW glue layer.
Signed-off-by: Felipe Balbi <balbi@ti.com>
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change all ocurrences of musb_hdrc to musb-hdrc.
We will call glue layer drivers musb-<glue layer>,
so in order to keep things somewhat standard, let's
change the underscore into a dash.
Signed-off-by: Felipe Balbi <balbi@ti.com>
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This will make things simpler when choosing which
glue layer to compile. It avoids a lot of magic
around the "default" Kconfig option and lets the
user choose what exactly s/he wants to compile.
Signed-off-by: Felipe Balbi <balbi@ti.com>
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when we start splitting HW glue layer, it's
gonna make it easier to re-use that structure.
Signed-off-by: Felipe Balbi <balbi@ti.com>
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Fix two bugs with the port array setup.
The first bug will only show up with broken xHCI hosts with Extended
Capabilities registers that have duplicate port speed entries for the same
port. The idea with the original code was to set the port_array entry to
-1 if the duplicate port speed entry said the port was a different speed
than the original port speed entry. That would mean that later, the port
would not be exposed to the USB core. Unfortunately, I forgot a continue
statement, and the port_array entry would just be overwritten in the next
line.
The second bug would happen if there are conflicting port speed registers
(so that some entry in port_array is -1), or one of the hardware port
registers was not described in the port speed registers (so that some
entry in port_array is 0). The code that sets up the usb2_ports array
would accidentally claim those ports. That wouldn't really cause any
user-visible issues, but it is a bug.
This patch should go into the stable trees that have the port array and
USB 3.0 port disabling prevention patches.
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Cc: stable@kernel.org
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This was done to handle a number of conflicts in the batman-adv
and winbond drivers properly. It also now allows us to fix up the sysfs
attributes properly that were not in the .37 release due to them being
only in this tree at the time.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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preparing to a big refactor on musb code. We need
to be able to compile in all glue layers (or at
least all ARM-based ones) together and have a
working binary.
While preparing for that, we move every glue
layer to export only one symbol, which is
a struct musb_platform_ops, and make all
other functions static.
Later patches will come to allow for compiling
all glue layers together and have a working
binary.
Signed-off-by: Felipe Balbi <balbi@ti.com>
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This will be passed to musb_core by platform glue
layer in order to make it easier to compile support
for several HW glue layers.
Later patches will come using this structure and
also moving HW glue layers to its own platform
driver; the idea is to be able to handle platform
peculiarities in a manner which doesn't affect one
another.
Signed-off-by: Felipe Balbi <balbi@ti.com>
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Done to resolve merge conflict:
Conflicts:
arch/arm/mach-mx25/devices-imx25.h
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh-2.6 into work
* 'sh/ehci' of master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh-2.6:
sh: Convert to USB_ARCH_HAS_OHCI/EHCI selects.
usb: ehci-sh: Add missing ehci helpers.
usb: ehci-sh: Fix up fault in shutdown path.
sh: Add EHCI support for SH7786.
usb: ehci-hcd: Add support for SuperH EHCI.
usb: ohci-sh: Set IRQ as shared.
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* 'for-next' of git://gitorious.org/usb/usb:
usb: musb: gadget: prevent a NULL pointer dereference
usb: musb: add names for IRQs in structure resource
usb: musb: remove board_data parameter from musb_platform_init()
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If g_audio fails to open the sound control device, it crashes at removal:
Insertion:
[ 4143.836536] g_audio gadget: unable to open sound control device file: /dev/snd/controlC0
[ 4143.836543] g_audio gadget: we need at least one control device
[ 4143.836551] g_audio gadget: Linux USB Audio Gadget, version: Dec 18, 2008
[ 4143.836558] g_audio gadget: g_audio ready
Removal:
[ 4146.802643] BUG: unable to handle kernel paging request at 00023018
[ 4146.802655] IP: [<c10af9f5>] filp_close+0xa/0x5b
[ 4146.802674] *pdpt = 0000000015426001 *pde = 0000000000000000
[ 4146.802684] Oops: 0000 [#1] PREEMPT SMP
[ 4146.802692] last sysfs file: /sys/power/state
[ 4146.802701] Modules linked in: g_audio(-) ioh_udc fuse asix usbnet [last unloaded: g_audio]
[ 4146.802719]
[ 4146.802728] Pid: 1394, comm: rmmod Not tainted 2.6.33.5-26.1-ivi #1 To be filled by O.E.M./To be filled by O.E.M.
[ 4146.802738] EIP: 0060:[<c10af9f5>] EFLAGS: 00010206 CPU: 0
[ 4146.802746] EIP is at filp_close+0xa/0x5b
[ 4146.802753] EAX: 00023000 EBX: 00023000 ECX: 00000046 EDX: df842680
[ 4146.802760] ESI: e071cd4c EDI: df842680 EBP: ddbbbef0 ESP: ddbbbee4
[ 4146.802768] DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
[ 4146.802776] Process rmmod (pid: 1394, ti=ddbba000 task=dd95a4f0 task.ti=ddbba000)
[ 4146.802782] Stack:
[ 4146.802787] d540c280 e071cd4c df2bc000 ddbbbefc e071b82c df11e440 ddbbbf04 e071c622
[ 4146.802804] <0> ddbbbf28 e071c47f 00000008 e071cd74 df11e464 df2bc01c df2bc000 e071ce68
[ 4146.802822] <0> 00000880 ddbbbf38 e07fd1b8 e071cef0 00000000 ddbbbf40 e071b9f4 ddbbbf48
[ 4146.802842] Call Trace:
[ 4146.802857] [<e071b82c>] ? gaudio_cleanup+0x87/0xe0 [g_audio]
[ 4146.802869] [<e071c622>] ? audio_unbind+0x8/0xc [g_audio]
[ 4146.802881] [<e071c47f>] ? composite_unbind+0x8d/0xcb [g_audio]
[ 4146.802895] [<e07fd1b8>] ? usb_gadget_unregister_driver+0x7b/0xc0 [ioh_udc]
[ 4146.802908] [<e071b9f4>] ? usb_composite_unregister+0x15/0x17 [g_audio]
[ 4146.802920] [<e071c633>] ? cleanup+0xd/0xf [g_audio]
[ 4146.802932] [<c105a938>] ? sys_delete_module+0x185/0x1dd
[ 4146.802944] [<c101c3ea>] ? do_page_fault+0x248/0x276
[ 4146.802956] [<c10027d0>] ? sysenter_do_call+0x12/0x26
[ 4146.802962] Code: 12 5f 3a 00 8b 43 04 8b 40 0c 0f b3 30 3b 73 44 73 03 89 73 44 89 f8 e8 f1 61 3a 00 5b 5e 5f 5d c3 55 89 e5 57 89 d7 56 53 89 c3 <8b> 40 18 85 c0 75 0f 68 32 15 5e c1 31 f6 e8 52 39 3a 00 5a eb
[ 4146.803058] EIP: [<c10af9f5>] filp_close+0xa/0x5b SS:ESP 0068:ddbbbee4
[ 4146.803071] CR2: 0000000000023018
[ 4146.803112] ---[ end trace 0989a7e023da0434 ]---
This patch makes sure not to assign the_card if gaudio_open_snd_dev fails,
since the parent function will deallocate the card.
Also make sure all filp's in gaudio_open_snd_dev is assigned NULL upon error
and gaudio_close_snd_dev only cleanups when the filp's are non-NULL.
Signed-off-by: Richard Röjfors <richard.rojfors@pelagicore.com>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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commits 2eb42d5c287f5e883a4b3ebe668ba880caa351e5 and
9e1dde33876ba83ad586c336647fff133d0f5472 renamed some defines
but didn't fix all the places where these defines are used
leading to a compile failure for USB on i.MX31, 35 and 27.
Signed-off-by: Eric Bénard <eric@eukrea.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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