Merge contains:
*) Add new usb2 phy driver for Meson8b and GXBB
*) Remove phy drivers added for miphy365 and STiH415/6 (as support for
these SoCs are removed from the kernel)
*) Add a sysfs entry to facilitate usb role swap in rcar SoC
*) Add support for otg port in rk3399
*) misc fixes in various phy drivers and cleanups
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
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Merge tag 'phy-for-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/kishon/linux-phy into usb-next
Kishon writes:
phy: for 4.10
Merge contains:
*) Add new usb2 phy driver for Meson8b and GXBB
*) Remove phy drivers added for miphy365 and STiH415/6 (as support for
these SoCs are removed from the kernel)
*) Add a sysfs entry to facilitate usb role swap in rcar SoC
*) Add support for otg port in rk3399
*) misc fixes in various phy drivers and cleanups
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Emit KOBJ_ONLINE/KOBJ_OFFLINE action uevent on VBUS status changes.
Cc: Tony Lindgren <tony@atomide.com>
Signed-off-by: Matt Ranostay <matt@ranostay.consulting>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Now with musb driver implementing generic session bit based
PM, we need to have the USB PHYs behaving in a sane way for
platforms implementing PM.
Currently twl4030-usb enables PM in twl4030_phy_power_on()
and then disables it in twl4030_phy_power_off(). This will
block PM runtime for the SoC when no cable is connected.
Fix the issue by moving PM runtime autosuspend call to
happen where it gets called in twl4030_phy_power_on().
Note that this patch should not be backported to anything
before commit 467d5c9807 ("usb: musb: Implement session bit
based runtime PM for musb-core") as before that all the
glue layers implemented their own PM.
Fixes: 467d5c9807 ("usb: musb: Implement session bit based
runtime PM for musb-core")
Tested-by: Ladislav Michl <ladis@linux-mips.org>
Tested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Acked-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
twl4030_phy_power_on() initializes some bits which are required for
charging. As they are not set in twl4030_usb_runtime_resume()
a call to pm_runtime_get_sync() is not sufficient to enable charging.
This patch moves the initialization to twl4030_usb_runtime_resume()
so everything needed for charging is initialized upon
pm_runtime_get_sync().
That also gives improved possibilities to debug problems in that area
because the relevant parts can be checked separately. Charging can be
enabled without having the musb subsystem active.
As a side effect this hides some bugs in musb which causes
unbalanced calls to phy_power_off()/phy_power_on() so that
phy->power_count becomes -1.
The result is that e.g. the GTA04 phone (dm3730 + twl4030) works
finally as a usb gadget again and charging is working.
Signed-off-by: Andreas Kemnade <andreas@kemnade.info>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
setting twl->linkstat = MUSB_UNKNOWN upon error in musb_mailbox as
introduced in
commit 12b7db2bf8 ("usb: musb: Return error value from musb_mailbox")
causes twl4030_usb_irq() to not detect a state change form cable connected
to cable disconnected after such an error so that
pm_runtime_put_autosuspend() will not be called and the usage counter
gets unbalanced. Such errors happen e.g. if the omap2430 module is not
(yet) loaded during plug/unplug events.
This patch introduces a flag instead that indicates whether there is
information for the musb_mailbox pending and calls musb_mailbox() if
that flag is set.
Signed-off-by: Andreas Kemnade <andreas@kemnade.info>
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
At least on n900 we have phy-twl4030-usb only generating cable
interrupts, and then have a separate USB PHY.
In order for musb to know the real cable status, we need to
clear any cached state until musb is ready. Otherwise the cable
status interrupts will get just ignored if the status does
not change from the initial state.
To do this, let's add a return value to musb_mailbox(), and
reset cached linkstat to MUSB_UNKNOWN on error. Sorry to cause
a bit of churn here, I should have added that already last time
patching musb_mailbox().
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The twl4030 USB PHY driver uses UNIVERSAL_DEV_PM_OPS to access
its suspend/resume functions, which causes a warning about
unused symbols when CONFIG_PM is disabled:
drivers/phy/phy-twl4030-usb.c:394:12: error: 'twl4030_usb_runtime_suspend' defined but not used [-Werror=unused-function]
drivers/phy/phy-twl4030-usb.c:408:12: error: 'twl4030_usb_runtime_resume' defined but not used [-Werror=unused-function]
This adds __maybe_unused annotations to let the compiler know
it can silently drop the function definition.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
If we reload phy-twl4030-usb, we get a warning about unbalanced
pm_runtime_enable. Let's fix the issue and also fix idling of the
device on unload before we attempt to shut it down.
If we don't properly idle the PHY before shutting it down on removal,
the twl4030 ends up consuming about 62mW of extra power compared to
running idle with the module loaded.
Cc: stable@vger.kernel.org
Cc: Bin Liu <b-liu@ti.com>
Cc: Felipe Balbi <balbi@ti.com>
Cc: Kishon Vijay Abraham I <kishon@ti.com>
Cc: NeilBrown <neil@brown.name>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Otherwise rmmod omap2430; rmmod phy-twl4030-usb; modprobe omap2430
will try to use a non-existing phy and oops:
Unable to handle kernel paging request at virtual address b6f7c1f0
...
[<c048a284>] (devm_usb_get_phy_by_node) from [<bf0758ac>]
(omap2430_musb_init+0x44/0x2b4 [omap2430])
[<bf0758ac>] (omap2430_musb_init [omap2430]) from [<bf055ec0>]
(musb_init_controller+0x194/0x878 [musb_hdrc])
Cc: stable@vger.kernel.org
Cc: Bin Liu <b-liu@ti.com>
Cc: Felipe Balbi <balbi@ti.com>
Cc: Kishon Vijay Abraham I <kishon@ti.com>
Cc: NeilBrown <neil@brown.name>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
We currently can't unload omap2430 MUSB platform glue driver module and
this cause issues for fixing the MUSB code further. The reason we can't
remove omap2430 is because it uses the PHY functions and also exports the
omap_musb_mailbox function that some PHY drivers are using.
Let's fix the issue by exporting a more generic musb_mailbox function
from the MUSB core and allow platform glue layers to register phy_callback
function as needed.
And now we can now also get rid of the include/linux/musb-omap.h.
Cc: Bin Liu <b-liu@ti.com>
Cc: Felipe Balbi <balbi@ti.com>
Cc: Kishon Vijay Abraham I <kishon@ti.com>
Cc: NeilBrown <neil@brown.name>
Reviewed-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
The USB phy should initialize with power-off, and will be powered on
by the USB system when a cable connection is detected.
Having this pm_runtime_get_sync() during probe causes the phy to
*always* be powered on.
Removing it returns to sensible power management.
Fixes: 96be39ab34
Signed-off-by: NeilBrown <neil@brown.name>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
When the runtime_suspend callback is running, 'runtime_status'
is always RPM_SUSPENDING, so pm_runtime_suspended() will always
fail.
Similarly while the runtime_resume callback is running
'runtime_status' is RPM_RESUMING, so pm_runtime_active() will
always fail.
So remove these two pointless tests.
Signed-off-by: NeilBrown <neil@brown.name>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
A construct like:
if (pm_runtime_suspended(twl->dev))
pm_runtime_get_sync(twl->dev);
is against the spirit of the runtime_pm interface as it
makes the internal refcounting useless.
In this case it is also racy, particularly as 'put_autosuspend'
is used to drop a reference.
When that happens a timer is started and the device is
runtime-suspended after the timeout.
If the above code runs in this window, the device will not be
found to be suspended so no pm_runtime reference is taken.
When the timer expires the device will be suspended, which is
against the intention of the code.
So be more direct is taking and dropping references.
If twl->linkstat is VBUS_VALID or ID_GROUND, then hold a
pm_runtime reference, otherwise don't.
Define "cable_present()" to test for this condition.
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
of non-dt boot. Adds three new PHY drivers using the PHY framework and some
miscellaneous fixes and cleanups.
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Merge tag 'for-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/kishon/linux-phy into usb-testing
Kishon writes:
Improvements in phy-core specifically on PHY core finds the PHY in the case
of non-dt boot. Adds three new PHY drivers using the PHY framework and some
miscellaneous fixes and cleanups.
The users of the old method are now converted to the new one.
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
[ kishon@ti.com : made phy-berlin-usb.c and phy-miphy28lp.c to use the updated
devm_phy_create API.]
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Creates the lookup separately. Hard coding the consumer as
it can't be anything else except musb.
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
commit e47d925 (usb: move the OTG state
from the USB PHY to the OTG structure) moved
the OTG state field from struct usb_phy to
struct usb_otg but, even though I fixed many
other build breakages, I still missed one
on phy-twl4030-usb.c.
Fix the build breakage now.
While at that, also a build warning introduced
by the same commit.
Cc: Kishon Vijay Abraham I <kishon@ti.com>
Cc: Antoine Tenart <antoine.tenart@free-electrons.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This patch removes the superflous .owner field for drivers which
use the module_platform_driver or platform_driver_register api,
as this is overriden in __platform_driver_register.
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
We're using threaded irq on a I2C bus and we're sleeping in
twl4030_usb_irq() as it calls twl4030_usb_linkstat() which
calls the i2c functions. If we ever need to lock for longer
I2C transaction sequences a mutex will allow us to do that
easily.
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
There's no longer need for tracking the phy state in the driver
with asleep, we can now rely on runtime PM.
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
We don't need twl4030_phy_power() any longer now that we have
the runtime PM calls. Let's get rid of it as it's confusing.
No functional changes, just move the code and use res instead
of ret as we are not returning that value.
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
We can now let the interrupt and delayed work do all that's
needed with runtime PM.
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Commit 249751f223 ("usb: phy: twl4030-usb: poll for ID disconnect")
added twl4030_id_workaround_work() to deal with lost interrupts
after ID pin goes down. Looks like commit f1ddc24c9e ("usb: phy:
twl4030-usb: remove *set_suspend* and *phy_init* ops") changed
things around for the generic phy framework, and delayed work no
longer got called except initially during boot.
The PHY connect and disconnect interrupts for twl4030-usb are not
working after disconnecting a USB-A cable from the board, and the
deeper idle states for omap are blocked as the USB controller
stays busy.
The issue can be solved by calling delayed work from twl4030_usb_irq()
when ID pin is down and the PHY is not asleep like we already do
in twl4030_id_workaround_work().
But as both twl4030_usb_irq() and twl4030_id_workaround_work()
already do pretty much the same thing, let's call twl4030_usb_irq()
from twl4030_id_workaround_work() instead of adding some more
duplicate code. We also must call sysfs_notify() only when we have
an interrupt and not from the delayed work as notified by
Grazvydas Ignotas <notasas@gmail.com>.
Fixes: f1ddc24c9e ("usb: phy: twl4030-usb: remove *set_suspend* and *phy_init* ops")
Cc: stable@vger.kernel.org # v3.13+
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Commit 30a70b026b ("usb: musb: fix obex in g_nokia.ko causing kernel
panic") attempted to fix runtime PM handling for PHYs that are on the
I2C bus. Commit 3063a12be2 ("usb: musb: fix PHY power on/off") then
changed things around to enable of PHYs that rely on runtime PM.
These changes however broke idling of the PHY and causes at least
100 mW extra power consumption on omaps, which is a lot with
the idle power consumption being below 10 mW range on many devices.
As calling phy_power_on/off from runtime PM calls in the USB
causes complicated issues with I2C connected PHYs, let's just let
the PHY do it's own runtime PM as needed. This leaves out the
dependency between PHYs and USB controller drivers for runtime
PM.
Let's fix the regression for twl4030-usb by adding minimal runtime
PM support. This allows idling the PHY on disconnect.
Note that we are changing to use standard runtime PM handling
for twl4030_phy_init() as that function just checks the state
and does not initialize the PHY. The PHY won't get initialized
until in twl4030_phy_power_on().
Fixes: 30a70b026b ("usb: musb: fix obex in g_nokia.ko causing kernel panic")
Fixes: 3063a12be2 ("usb: musb: fix PHY power on/off")
Cc: stable@vger.kernel.org # v3.15+
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
In case of multi-phy PHY providers, each PHY should be modeled as a sub
node of the PHY provider. Then each PHY will have a different node pointer
(node pointer of sub node) than that of PHY provider. Added this provision
in the PHY core.
Also fixed all drivers to use the updated API.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Semicolon after switch statement is not needed.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Silences the following warnings:
WARNING: sizeof *twl should be sizeof(*twl)
WARNING: sizeof *otg should be sizeof(*otg)
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Registering phy_provider before creating the PHY can result in PHY
callbacks being invoked which will lead to aborts. In order to avoid this
invoke phy_provider_register after phy_create and phy_set_drvdata.
Reported-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Final conversions to configfs for mass storage, acm_ms, and
multi gadgets.
MUSB should now work out of the box on AM335x-based boards
(beagle bone white and black) with DMA thanks to Sebastian's
work.
We can now enable VERBOSE_DEBUG on builds of drivers/usb/gadget/
by selecting CONFIG_USB_GADGET_VERBOSE.
s3c-hsotg got quite a few non-critical fixes but also learned
a few new tricks (isochronous transfers, multi count support).
The Marvel USB3 Controller driver got a memory leak fix.
devm_usb_get_phy() learned not to return NULL, ever.
Other than these patches, we have the usual set of cleanups
ranging from removal of unnecessary *_set_drvdata() to using
SIMPLE_DEV_PM_OPS.
Signed-of-by: Felipe Balbi <balbi@ti.com>
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Merge tag 'usb-for-v3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next
Felipe writes:
usb: patches for v3.13
Final conversions to configfs for mass storage, acm_ms, and
multi gadgets.
MUSB should now work out of the box on AM335x-based boards
(beagle bone white and black) with DMA thanks to Sebastian's
work.
We can now enable VERBOSE_DEBUG on builds of drivers/usb/gadget/
by selecting CONFIG_USB_GADGET_VERBOSE.
s3c-hsotg got quite a few non-critical fixes but also learned
a few new tricks (isochronous transfers, multi count support).
The Marvel USB3 Controller driver got a memory leak fix.
devm_usb_get_phy() learned not to return NULL, ever.
Other than these patches, we have the usual set of cleanups
ranging from removal of unnecessary *_set_drvdata() to using
SIMPLE_DEV_PM_OPS.
Signed-of-by: Felipe Balbi <balbi@ti.com>
Now that twl4030-usb is adapted to the new generic PHY framework,
*set_suspend* and *phy_init* ops can be removed from twl4030-usb driver.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Used the generic PHY framework API to create the PHY. For powering on
and powering off the PHY, power_on and power_off ops are used. Once the
MUSB OMAP glue is adapted to the new framework, the suspend and resume
ops of usb phy library will be removed. Also twl4030-usb driver is moved
to drivers/phy/.
However using the old usb phy library cannot be completely removed
because otg is intertwined with phy and moving to the new
framework completely will break otg. Once we have a separate otg state machine,
we can get rid of the usb phy library.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Greg Kroah-Hartman