Due to recent changes to regulator API, all
users which don't check regulator_{en,dis}able()'s
return value will generate compile warnings.

Add such checks to gpio-vbus.

Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

Fix the following sparse warning:

drivers/usb/phy/phy-samsung-usb2.c:50:26: sparse: incorrect type in argument 1 (different address spaces)
drivers/usb/phy/phy-samsung-usb2.c:50:26:    expected void const volatile [noderef] <asn:2>*addr
drivers/usb/phy/phy-samsung-usb2.c:50:26:    got void *

Cc: Vivek Gautam <gautam.vivek@samsung.com>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

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>

AB8500 versions preceding 2.0 were only used internally by ST-Ericsson
and are not supported anymore.  This patch drops all v1.0 and v1.1
support 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>

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>

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>

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>

PHY layer no longer returns NULL. We must
switch from IS_ERR_OR_NULL() to IS_ERR().
Signed-off-by: Felipe Balbi <balbi@ti.com>

PHY layer no longer returns NULL. We must
switch from IS_ERR_OR_NULL() to IS_ERR().
Signed-off-by: Felipe Balbi <balbi@ti.com>

PHY layer no longer returns NULL. We must
switch from IS_ERR_OR_NULL() to IS_ERR().
Signed-off-by: Felipe Balbi <balbi@ti.com>

PHY layer no longer returns NULL. We must
switch from IS_ERR_OR_NULL() to IS_ERR().
Signed-off-by: Felipe Balbi <balbi@ti.com>

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>

PHY laye rno longer return NULL. We need to
switch over from IS_ERR_OR_NULL() to IS_ERR().
Signed-off-by: Felipe Balbi <balbi@ti.com>

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>

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>

Having twl4030_usb_phy_init() (detects if a cable is connected before
twl4030 is probed) in twl4030 probe makes cable connect events to be
missed by musb glue, since it gets loaded after twl4030. Having
twl4030_usb_phy_init as a usb_phy ops lets twl4030_usb_phy_init to be
called when glue is ready.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Tested-by: Grazvydas Ignotas <notasas@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

Used devres APIs devm_request_threaded_irq and devm_regulator_get for
requesting irq and for getting regulator respectively.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Tested-by: Grazvydas Ignotas <notasas@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

in cases where PHY layer isn't enabled, we want
to still return an error code (actually an error
pointer) so that our users don't need to cope with
either error pointer of NULL.

This will simplify users as below:

-	return IS_ERR(phy) ? PTR_ERR(phy) : -ENODEV;
+	return PTR_ERR(phy);
Acked-by: Kishon Vijay Abraham I <kishon@ti.com>
Reported-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Felipe Balbi <balbi@ti.com>

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>

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>

"req->length" is a capped version of "data->length".
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

our global '_omap' pointer wasn't marked
static. This patch solves the following sparse
warning:

	warning: symbol '_omap' was not declared. \
	Should it be static?
Signed-off-by: Felipe Balbi <balbi@ti.com>

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>

For NULL terminated string, better notice '\0' in the end.
Signed-off-by: Chen Gang <gang.chen@asianux.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Bhupesh Sharma <bhupesh.sharma@st.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

Found using the following semantic patch:
<spml>
@@
@@
spin_lock_irqsave(...);
... when != spin_unlock_irqrestore(...);
* GFP_KERNEL
</spml>
Signed-off-by: Cyril Roelandt <tipecaml@gmail.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Bhupesh Sharma <bhupesh.sharma@st.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

As per the USB3.0 specs, the bandwidth requirements of a UVC's video
streaming endpoint will change to support super-speed. These changes
will be dependent on whether the UVC video streaming endpoint is Bulk or
Isochronous:

- If video streaming endpoint is Isochronous:
  As per Section 4.4.8.2 (Isochronous Transfer Bandwidth Requirements)
  of the USB3.0 specs:

    A SuperSpeed isochronous endpoint can move up to three burst
    transactions of up to 16 maximum sized packets (3 * 16 * 1024 bytes)
    per service interval.

- If video streaming endpoint is Bulk:
  As per 4.4.6.1 (Bulk Transfer Data Packet Size) of the USB3.0 specs:

    An endpoint for bulk transfers shall set the maximum data packet
    payload size in its endpoint descriptor to 1024 bytes. It also
    specifies the burst size that the endpoint can accept from or
    transmit on the SuperSpeed bus. The allowable burst size for a bulk
    endpoint shall be in the range of 1 to 16.

So, in the Isochronous case, we can define the USB request's buffer to
be equal to = (Maximum packet size) * (bMaxBurst + 1) * (Mult + 1), so
that the UDC driver can try to send out this buffer in one Isochronous
service interval.

The same computation will hold good for the Bulk case as the Mult
value is 0 here and we can have a USB request buffer of maximum
16 * 1024 bytes size, which can be sent out by the UDC driver as
per the Bulk bandwidth allocation on the USB3 bus.

This patch adds the above-mentioned support and is also USB2.0 backward
compliant.
Signed-off-by: Bhupesh Sharma <bhupesh.sharma@st.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Bhupesh Sharma <bhupesh.sharma@st.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

This patch adds the support in UVC webcam gadget design for providing
USB_GADGET_DELAYED_STATUS in response to a set_interface(alt setting 1)
command issue by the Host.

The current UVC webcam gadget design generates a STREAMON event
corresponding to a set_interface(alt setting 1) command from the Host.
This STREAMON event will eventually be routed to a real V4L2 device.

To start video streaming, it may be required to perform some register
writes to a camera sensor device over slow external busses like I2C or
SPI. So, it makes sense to ensure that we delay the STATUS stage of the
set_interface (alt setting 1) command.

Otherwise, a lot of ISOC IN tokens sent by the Host will be replied to
by zero-length packets by the webcam device. On certain Hosts this may
even lead to ISOC URBs been cancelled from the Host side.

So, as soon as we finish doing all the "streaming" related stuff on the
real V4L2 device, we call a STREAMON ioctl on the UVC side and from here
we call the 'usb_composite_setup_continue' function to complete the
status stage of the set_interface(alt setting 1) command.

Further, we need to ensure that we queue no video buffers on the UVC
webcam gadget, until we de-queue a video buffer from the V4L2 device.
So, the application should call the STREAMON on UVC side only when it
has dequeued sufficient buffers from the V4L2 side and queued them to
the UVC gadget.
Signed-off-by: Bhupesh Sharma <bhupesh.sharma@st.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Bhupesh Sharma <bhupesh.sharma@st.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

As per the UVC compliance test suite's assertion 6.1.25, the `iFunction`
field of the Interface Association Descriptor (IAD) should the match the
`iInterface` field of the standard Video Control (VC) Interface Descriptor for
this Video Interface Collection (VIC).

This mandatory case is captured in section 3.11 of the
USB Video Class Compliance specification revision 1.1

This patch fixes this test assertion's failure and has been tested on
Linux FC16, WinXP, WIN7 and WIN8 High speed and Super Speed hosts
for successful enumeration.
Signed-off-by: Bhupesh Sharma <bhupesh.sharma@st.com>
[Merged the association and control string descriptors]
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Bhupesh Sharma <bhupesh.sharma@st.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

As per UVC compliance test specification's assertion number 6.3.90
related to 'Standard VS Isochronous Video Data Endpoint Descriptor Assertions',
the bits D3..2 of 'bmAttributes' field of Standard VS Isochronous Video Data
Endpoint Descriptor should be 01 (binary) to indicate that the
synchronization type is ASYNCHRONOUS.

This mandatory requirement has been captured in section 3.10.1.1 of the UVC
Video Class Specification version 1.1

This patch adds a fix for the same.
Signed-off-by: Bhupesh Sharma <bhupesh.sharma@st.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Bhupesh Sharma <bhupesh.sharma@st.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

Call the appropriate usb_ep_autoconf*() function depending on the device
speed, and pass it the corresponding streaming endpoint.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Bhupesh Sharma <bhupesh.sharma@st.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

Compute the multiplier from the maximum packet size based on the speed.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Bhupesh Sharma <bhupesh.sharma@st.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

The descriptors are identical, there's no need to have several copies of
them.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Bhupesh Sharma <bhupesh.sharma@st.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

Let's keep the code consistent, people might want to read it.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Bhupesh Sharma <bhupesh.sharma@st.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

Descriptive names make the code more readable.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Bhupesh Sharma <bhupesh.sharma@st.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

The comment that describes string descriptors allocation isn't clear,
fix it.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Bhupesh Sharma <bhupesh.sharma@st.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

Convert clk_enable/clk_disable to clk_prepare_enable/clk_disable_unprepare
calls as required by common clock framework.
Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
CC: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

Used of_platform_populate() to create dwc3 core platform_device
from device tree data. Additionally some cleanup is also done.
Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
CC: Felipe Balbi <balbi@ti.com>
CC: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

Adding PHY driver support for USB 3.0 controller for Samsung's
SoCs.
Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

Moving register and structure definitions to header file,
and keeping the generic functions to be used across
multiple PHYs in common phy helper driver under SAMSUNG_USBPHY,
and moving USB 2.0 PHY driver under SAMSUNG_USB2PHY.

Also allowing samsung PHY drivers be built as modules.
Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

return -EPROBE_DEFER from dwc3_omap_mailbox in dwc3-omap.c, if the probe of
dwc3-omap has not yet been executed or failed.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>