device name usbhs clocks are changed from
usbhs-omap.0 to usbhs_omap; this is because
in the hwmod registration the device name is set
as usbhs_omap; The redudant clock nodes are removed.
Signed-off-by: NKeshava Munegowda <keshava_mgowda@ti.com>
Reviewed-by: NPartha Basak <parthab@india.ti.com>
Signed-off-by: NPaul Walmsley <paul@pwsan.com>

The patch fixes the build failure:

drivers/mfd/omap-usb-host.c:1034:1: warning: data definition has no type
or storage class
drivers/mfd/omap-usb-host.c:1034:1: warning: type defaults to 'int' in
declaration of 'EXPORT_SYMBOL_GPL'
drivers/mfd/omap-usb-host.c:1034:1: warning: parameter names (without
types) in function declaration
drivers/mfd/omap-usb-host.c:1040:1: warning: data definition has no type
or storage class
drivers/mfd/omap-usb-host.c:1040:1: warning: type defaults to 'int' in
declaration of 'EXPORT_SYMBOL_GPL'
drivers/mfd/omap-usb-host.c:1040:1: warning: parameter names (without
types) in function declaration
drivers/mfd/omap-usb-host.c:1045:13: error: 'THIS_MODULE' undeclared
here (not in a function)
drivers/mfd/omap-usb-host.c:1050:15: error: expected declaration
specifiers or '...' before string constant
drivers/mfd/omap-usb-host.c:1050:1: warning: data definition has no type
or storage class
drivers/mfd/omap-usb-host.c:1050:1: warning: type defaults to 'int' in
declaration of 'MODULE_AUTHOR'
drivers/mfd/omap-usb-host.c:1050:15: warning: function declaration isn't
a prototype
drivers/mfd/omap-usb-host.c:1051:14: error: expected declaration
specifiers or '...' before string constant
drivers/mfd/omap-usb-host.c:1051:1: warning: data definition has no type
or storage class
drivers/mfd/omap-usb-host.c:1051:1: warning: type defaults to 'int' in
declaration of 'MODULE_ALIAS'
drivers/mfd/omap-usb-host.c:1051:14: warning: function declaration isn't
a prototype
drivers/mfd/omap-usb-host.c:1052:16: error: expected declaration
specifiers or '...' before string constant
drivers/mfd/omap-usb-host.c:1052:1: warning: data definition has no type
or storage class
drivers/mfd/omap-usb-host.c:1052:1: warning: type defaults to 'int' in
declaration of 'MODULE_LICENSE'
drivers/mfd/omap-usb-host.c:1052:16: warning: function declaration isn't
a prototype
drivers/mfd/omap-usb-host.c:1053:20: error: expected declaration
specifiers or '...' before string constant
drivers/mfd/omap-usb-host.c:1053:1: warning: data definition has no type
or storage class
drivers/mfd/omap-usb-host.c:1053:1: warning: type defaults to 'int' in
declaration of 'MODULE_DESCRIPTION'
drivers/mfd/omap-usb-host.c:1053:20: warning: function declaration isn't
a prototype
make[2]: *** [drivers/mfd/omap-usb-host.o] Error 1
  CC      fs/proc/namespaces.o
make[1]: *** [drivers/mfd] Error 2
make: *** [drivers] Error 2
make: *** Waiting for unfinished jobs....
Signed-off-by: NMing Lei <ming.lei@canonical.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

This code section seems to have been accidentally copy pasted.
It causes incorrect bits to be set up in the TLL_CHANNEL_CONF
register and prevents the TLL mode from working correctly.

Cc: stable@kernel.org
Signed-off-by: NAnand Gadiyar <gadiyar@ti.com>
Cc: Keshava Munegowda <keshava_mgowda@ti.com>
Acked-by: NFelipe Balbi <balbi@ti.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

usbhs_disable function was invoking clk_enable() instead of
clk_disable(), thus only increasing the clock usage counter and
preventing this particular clock from being ever turned off.
Because of this, the power domain of omap4 the USB Host subsystem
would never reach lower power states.This patch calls clk_disable()
in usbhs_disable function
Signed-off-by: NKeshava Munegowda <keshava_mgowda@ti.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

This reverts commit 7e6502d5.

Oops are produced during initialization of ehci and ohci
drivers. This is because the run time pm apis are used by
the driver but the corresponding hwmod structures and
initialization is not merged. hence revering  back the
commit id 7e6502d5Signed-off-by: NKeshava Munegowda <keshava_mgowda@ti.com>
Reported-by: NLuciano Coelho <coelho@ti.com>
Acked-by: NFelipe Balbi <balbi@ti.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

The usbhs core driver does not enable/disable the interface and
functional clocks; These clocks are handled by hwmod and runtime pm,
hence insted of the clock enable/disable, the runtime pm APIS are
used. however,the port clocks and tll clocks are handled
by the usbhs core.
Signed-off-by: NKeshava Munegowda <keshava_mgowda@ti.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

1. Return proper error if omap_usbhs_alloc_child fails
2. In the case of goto err_ehci, we should call platform_device_unregister(ehci)
   instead of platform_device_put(ehci) because we have already added the
   platform device to device hierarchy.
Signed-off-by: NAxel Lin <axel.lin@gmail.com>
Signed-off-by: NAxel Lin <axel.lin@gmail.com>
Tested-by: NKeshava Munegowda <keshava_mgowda@ti.com>
Acked-by: NFelipe Balbi <balbi@ti.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

The disabling of clocks and freeing GPIO are changed
to fix the occurrence of the crash of rmmod of ehci and ohci
drivers. The GPIOs should be freed after the spin locks are
unlocked.
Signed-off-by: NKeshava Munegowda <keshava_mgowda@ti.com>
Acked-by: NFelipe Balbi <balbi@ti.com>
Cc: stable@kernel.org
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

With commit 19403165 a main part of ehci-omap.c moved to
drivers/mfd/omap-usb-host.c created by commit 17cdd29d.
Due to this reorganisation the polarity used to reset the
external USB phy changed and USB host doesn't recognize
any devices.
Signed-off-by: NJuergen Kilb <J.Kilb@phytec.de>
Acked-by: NFelipe Balbi <balbi@ti.com>
Tested-by: NSteve Sakoman <steve@sakoman.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

in case of ehci phy mode; regulator of phy
should be enabled before initializing the
usbhs core driver.
Signed-off-by: NKeshava Munegowda <keshava_mgowda@ti.com>
Tested-by: NSteve Calfee <stevecalfee@gmail.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

In the case of missing platform_data we do not hold a spin_lock,
thus we should not call spin_unlock_irqrestore in the error path.

Also simplify the error handling by separating the successful path
from error path. I think this change improves readability.
Signed-off-by: NAxel Lin <axel.lin@gmail.com>
Tested-by: NSteve Calfee <stevecalfee@gmail.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

Fixes generated by 'codespell' and manually reviewed.
Signed-off-by: NLucas De Marchi <lucas.demarchi@profusion.mobi>

enabling and disabling the common clocks for ehci
and ohci is implemented. usbhs is a common parent
platform driver for EHCI and OHCI driver. This driver
receives the clock enable and disable requests
from ehci and ohci drivers.The UHH and TLL
initialization is also performed.
Signed-off-by: NKeshava Munegowda <keshava_mgowda@ti.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>