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>

Signed-off-by: NPavankumar Kondeti <pkondeti@codeaurora.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

This patch fixes the below compilation errors.

  CC      drivers/usb/gadget/ci13xxx_msm.o
  CC      net/mac80211/led.o
  drivers/usb/gadget/ci13xxx_msm.c: In function 'ci13xxx_msm_notify_event':
  drivers/usb/gadget/ci13xxx_msm.c:42: error: 'USB_AHBBURST' undeclared (first use in this function)
  drivers/usb/gadget/ci13xxx_msm.c:42: error: (Each undeclared identifier is reported only once
  drivers/usb/gadget/ci13xxx_msm.c:42: error: for each function it appears in.)
  drivers/usb/gadget/ci13xxx_msm.c:43: error: 'USB_AHBMODE' undeclared (first use in this function)
make[4]: *** [drivers/usb/gadget/ci13xxx_msm.o] Error 1
make[3]: *** [drivers/usb/gadget] Error 2

MSM USB driver is not supported on boards like trout (MSM7201) which
has an external PHY.
Signed-off-by: NPavankumar Kondeti <pkondeti@codeaurora.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Implement runtime and system pm ops to put hardware into low power
mode (LPM). As part of LPM, USB clocks are turned off, PHY is put
into suspend state and PHY comparators are turned off if VBUS/Id
notifications are not required from PHY.
Signed-off-by: NPavankumar Kondeti <pkondeti@codeaurora.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

This driver implements PHY initialization, clock management, ULPI IO ops
and simple OTG state machine to kick host/peripheral based on Id/VBUS
line status.  VBUS/Id lines are tied to a reference voltage on some boards.
Hence provide debugfs interface to select host/peripheral mode.
Signed-off-by: NPavankumar Kondeti <pkondeti@codeaurora.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>