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>