My previous patch introduced a bug which prevented this driver from
loading.  devm_ioremap_resource() has a call to
devm_request_mem_region() which will fail because the address space is
shared between this PHY driver and CI device controller driver.

Fixes: 10f0577a ('usb: phy: msm: change devm_ioremap() to devm_ioremap_resource()')
Reported-by: N"Ivan T. Ivanov" <iivanov@mm-sol.com>
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

adding new device id for SMSC USB334x devices.
Signed-off-by: NLiviu Dudau <Liviu.Dudau@arm.com>
Signed-off-by: NRyan Harkin <ryan.harkin@linaro.org>
Signed-off-by: NMark Brown <broonie@linaro.org>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

There are several issues here:
1) platform_get_resource() can return NULL and that wasn't handled.
2) We should request the memory before we remap it, and
   devm_ioremap_resource() does that.
3) devm_ioremap() returns a NULL but we were checking for IS_ERR().

Fixes: 6b99c68e ('usb: phy: msm: Migrate to Managed Device Resource allocation')
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

Commit a2734543 "usb: phy: msm: Use reset framework for LINK
and PHY resets" introduced a mandatory call to reset_control_get
into the msm usb phy driver, which means we have to add a Kconfig
dependency on the API to avoid this build error:

phy/phy-msm-usb.c: In function 'msm_otg_read_dt':
phy/phy-msm-usb.c:1461:2: error: implicit declaration of function 'devm_reset_control_get' [-Werror=implicit-function-declaration]
  motg->link_rst = devm_reset_control_get(&pdev->dev, "link");
  ^

Since the usb-ehci-msm driver currently selects the OTG driver,
we could still get a broken dependency here. To solve that,
this patch also removes the 'select', which turns out to be
unnecessary.
Reviewed-by: NIvan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

By adding COMPILE_TEST to the list of dependencies
we can build test this driver on all other architectures
which is very valuable for maintainers applying patches
and to find silly mistakes during development.
Reviewed-by: NIvan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

Remove that single instance of writel_relaxed()
call which is only available on ARM architecture.

This will let us build test this driver on all
different architectures.
Reviewed-by: NIvan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

this solves the following build warning found when
running compile tests.

drivers/usb/phy/phy-msm-usb.c: In function ‘msm_otg_read_dt’:
drivers/usb/phy/phy-msm-usb.c:1459:20: warning: cast from pointer \
	to integer of different size [-Wpointer-to-int-cast]
  pdata->phy_type = (int) id->data;
                    ^
Signed-off-by: NFelipe Balbi <balbi@ti.com>

There could be more than one USB2.0 PHY's on the platform.
This will allow all of them to be registered successfully.
Signed-off-by: NIvan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

New platform uses RBCPR hardware feature, with that voting for
absolute voltage of VDD CX is not required. Hence vote for corner of
VDD CX which uses nominal corner voltage on VDD CX.
Signed-off-by: NIvan T. Ivanov <iivanov@mm-sol.com>
Cc: Mayank Rana <mrana@codeaurora.org>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

Put the transceiver in non-driving mode. Otherwise host
may not detect soft-disconnection.
Signed-off-by: NIvan T. Ivanov <iivanov@mm-sol.com>
Cc: Pavankumar Kondeti <pkondeti@codeaurora.org>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

Select the secondary PHY using the TCSR register, if phy-num=1
in the DTS (or phy_number is set in the platform data).  The
SOC has 2 PHYs which can be used with the OTG port, and this
code allows configuring the correct one.

Note: This resolves the problem I was seeing where I couldn't
get the USB driver working at all on a dragonboard, from cold
boot.  This patch depends on patch 5/14 from Ivan's msm USB
patch set.  It does not use DT for the register address, as
there's no evidence that this address changes between SoC
versions.
Signed-off-by: NTim Bird <tim.bird@sonymobile.com>
Signed-off-by: NIvan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

Fix the value used for Parallel Transceiver Select (PTS) for the MSM USB
controller.  This is a standard chipidea PORTSC definition, where
a PHY_TYPE of 10b (<<30) is ULPI and 11b (<<30) is SERIAL.
Fix the definitions and use them correctly in the driver code.
Signed-off-by: NTim Bird <tim.bird@sonymobile.com>
Signed-off-by: NIvan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

On few legacy platforms, USB PHY is having dedicated reset clk.
It is used to reset USB PHY after putting USB PHY into low power
mode and for calibration of USB PHY. Putting USB PHY into low
power mode is causing ulpi read/write timeout as expected. USB PHY
reset clk is not available on newer platform.

For 28nm PHY, reset USB PHY after resetting USB LINK.
Also reset USB PHY using USB_PHY_PON bit with USB_OTG_HS_PHY_CTRL
register after programming USB PHY Override registers as suggested
with hardware programming guidelines.
Signed-off-by: NIvan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: NTim Bird <tim.bird@sonymobile.com>
Cc: Mayank Rana <mrana@codeaurora.org>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

Allow support to use 2nd HSPHY with USB2 Core.
Some platforms may have configuration to allow USB controller
work with any of the two HSPHYs present. By default driver
configures USB core to use primary HSPHY. Add support to allow
user select 2nd HSPHY using DT parameter.
Signed-off-by: NIvan T. Ivanov <iivanov@mm-sol.com>
Cc: Manu Gautam <mgautam@codeaurora.org>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

Using reset framework eliminate need of platform specific
callbacks and enable reset lines to be specified in DT files.
Signed-off-by: NIvan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

Allows controller to be specified via device tree.
Signed-off-by: NIvan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

Function return negative code on error.
Signed-off-by: NIvan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

Prefix did not bring any useful information. Currently none
of the MSM platforms define these regulators, so it is safe
to rename them.
Signed-off-by: NIvan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

There are no references to 'pclk_src_name' in plaform code,
so it is unused.
Signed-off-by: NIvan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

Use enum usb_dr_mode and drop default usb_dr_mode from platform data.

USB DT bindings states: dr_mode: "...In case this attribute isn't
passed via DT, USB DRD controllers should default to OTG...",
so remove redundand field.
Signed-off-by: NIvan T. Ivanov <iivanov@mm-sol.com>
Acked-by: NDavid Brown <davidb@codeaurora.org>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

This fixes following:

WARNING: quoted string split across lines
WARNING: Prefer seq_puts to seq_printf
Signed-off-by: NIvan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

Whether regulators are available or not is checked at driver
probe. If they are not available driver will refuse to load,
so no need to check them again.
Signed-off-by: NIvan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

Move memory, regulators, clocks and irq allocation to
devm_* variants. Properly check for valid clk handles.
Signed-off-by: NIvan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

Using platform_driver_probe() prevent driver from requesting
probe deferral. Fix this.

While at that, also switch to module_platform_driver() and
remove __init annotation from probe().
Signed-off-by: NIvan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

Eliminating global variables allows driver to handle multiple
device instances.
Signed-off-by: NIvan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

Controller could be found on APQ and MSM platforms,
make configuration description more generic.
Signed-off-by: NIvan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

The usb phy driver for mv_u3d got added in v3.7 through commit
a67e76ac ("usb: phy: mv_u3d: Add usb phy driver for mv_u3d"). It
then depended on USB_MV_U3D. And that symbol depended
on CPU_MMP3 at that time. But CPU_MMP3 has never been part of the tree.
This means that this drive was unbuildable when it was added.

In commit 60630c2e ("usb: gadget: mv_u3d: drop ARCH dependency")
MV_U3D_PHY was made depended directly on CPU_MMP3. That kept it
unbuildable, of course.

Remove this driver. It can be re-added once its dependencies are part of
the tree.
Signed-off-by: NPaul Bolle <pebolle@tiscali.nl>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

This patch exports symbol of otg_statemachine for kernel module
can use it.
Acked-by: NFelipe Balbi <balbi@ti.com>
Signed-off-by: NPeter Chen <peter.chen@freescale.com>
Signed-off-by: NLi Jun <b47624@freescale.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

We should be using logical "or" not bitwise "or".
Signed-off-by: NPeter Chen <peter.chen@freescale.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

According to:"On-The-Go and Embedded Host Supplement to the USB Revision 2.0
Specification July 27, 2012 Revision 2.0 version 1.1a"

- add a_wait_vrise to a_wait_vfall
- update condition from a_wait_vrise to a_wait_bcon
Signed-off-by: NLi Jun <b47624@freescale.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

it's now very easy to return a platform_device pointer
and have the caller pass it as argument when calling
usb_phy_generic_unregister().
Signed-off-by: NFelipe Balbi <balbi@ti.com>

now that all functions match the driver name,
the only missing piece is to rename the header
file itself.
Signed-off-by: NFelipe Balbi <balbi@ti.com>

no functional changes, just renaming the function
in order to make it slightly clearer what it should
be used for, also matching the driver name.
Signed-off-by: NFelipe Balbi <balbi@ti.com>

We only support GPL drivers in the USB Gadget Framework,
it sounds correct to make all exported symbols GPL too.
Acked-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

by removing the _relaxed suffix, we can build
this driver in other architectures.
Signed-off-by: NFelipe Balbi <balbi@ti.com>

Tests have shown that when a power-up transition is followed by other
PHY operations too quickly, the USB port appears dead. Waiting 1ms fixes
this problem.
Signed-off-by: NDaniel Mack <zonque@gmail.com>
Cc: stable@vger.kernel.org [3.14]
Signed-off-by: NFelipe Balbi <balbi@ti.com>

In case we found a matching USB PHY in usb_get_phy() but the call to
try_module_get() fails, we shouldn't return a (probably soon dangling)
pointer but an ERR_PTR instead.
Signed-off-by: NMathias Krause <minipli@googlemail.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

Add new ulpi IDs which are available on Xilinx Zynq boards.
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Rename struct omap_control_usb to struct omap_control_phy since it can
be used to control PHY of USB, SATA and PCIE. Also move the driver and
include files under *phy* and made the corresponding changes in the users
of phy-omap-control.
Signed-off-by: NKishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: NRoger Quadros <rogerq@ti.com>
Acked-by: NFelipe Balbi <balbi@ti.com>

No functional change. Moved omap_usb.h from linux/usb/ to linux/phy/.
Also removed the unused members of struct omap_usb (after phy-omap-pipe3
started using it's own header file)
Signed-off-by: NKishon Vijay Abraham I <kishon@ti.com>