ARM: sunxi: Add support for Allwinner SUNXi SoCs sata to ahci_platform

This patch adds support for the ahci sata controler found on Allwinner A10
and A20 SoCs to the ahci_platform driver.

Orignally written by Olliver Schinagl using the approach of having a platform
device which probe method creates a new child platform device which gets
driven by ahci_platform.c, as done by ahci_imx.c .

Refactored by Hans de Goede to add most of the non sunxi specific functionality
to ahci_platform.c and use a platform_data pointer from of_device_id for the
sunxi specific bits.

Signed-off-by: Olliver Schinagl <oliver@schinagl.nl>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
ahci-imx: Port to library-ised ahci_platform

This avoids the ugliness of creating a nested platform device from probe.

While moving it around anyways, move the mk6q phy init code from probe
to imx_sata_enable, as the phy needs to be re-initialized on resume too,
otherwise the drive won't be recognized after resume.

Tested on a wandboard i.mx6 quad.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
ARM: sun4i: dts: Add ahci / sata support

This patch adds sunxi sata support to A10 boards that have such a connector.
Some boards also feature a regulator via a GPIO and support for this is also
added.

Signed-off-by: Olliver Schinagl <oliver@schinagl.nl>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
ARM: sun7i: dts: Add ahci / sata support

This patch adds sunxi sata support to A20 boards that have such a connector.
Some boards also feature a regulator via a GPIO and support for this is also
added.

Signed-off-by: Olliver Schinagl <oliver@schinagl.nl>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
reset: Add of_reset_control_get

In some cases, you might need to deassert from reset an hardware block that
doesn't associated to a struct device (CPUs, timers, etc.).

Add a small helper to retrieve the reset controller from the device tree
without the need to pass a struct device.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
clocksource: sun5i: Add support for reset controller

The Allwinner A31 that uses this timer has the timer IP asserted in reset.
Add an optional reset property to the DT, and deassert the timer from reset if
it's there.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
ARM: sun6i: a31: Add support for the High Speed Timers

The Allwinner A31 has support for four high speed timers. Apart for the
number of timers (4 vs 2), it's basically the same logic than the high
speed timers found in the sun5i chips.

Now that we have a driver to support it, we can enable them in the
device tree.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
input: Add new sun4i-ts driver for Allwinner sunxi SoC's rtp controller

Note the sun4i-ts controller is capable of detecting a second touch, but when
a second touch is present then the accuracy becomes so bad the reported touch
location is not useable.

The original android driver contains some complicated heuristics using the
aprox. distance between the 2 touches to see if the user is making a pinch
open / close movement, and then reports emulated multi-touch events around
the last touch coordinate (as the dual-touch coordinates are worthless).

These kinds of heuristics are just asking for trouble (and don't belong
in the kernel). So this driver offers straight forward, reliable single
touch functionality only.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
input: sun4i-ts: Add support for temperature sensor

The sun4i resisitive touchscreen controller also comes with a built-in
temperature sensor. This commit adds support for it.

This commit also introduces a new "ts-attached" device-tree property,
when this is not set, the input part of the driver won't register. This way
the internal temperature sensor can be used to measure the SoC temperature
independent of there actually being a touchscreen attached to the controller.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
input: Add new sun4i-lradc-keys driver

Allwinnner sunxi SoCs have a low resolution adc (called lradc) which is
specifically designed to have various (tablet) keys (ie home, back, search,
etc). attached to it using a resistor network. This adds a driver for this.

There are 2 channels, currently this driver only supports chan0 since there
are no boards known to use chan1. The devicetree properties are already
prefixed with chan0 as preparation for chan1 support in the future.

This has been tested on an olimex a10s-olinuxino-micro, a13-olinuxino, and
a20-olinuxino-micro.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
ARM: dts: sun4i: Add lradc node

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
ARM: dts: sun5i: Add lradc node

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
ARM: dts: sun7i: Add lradc node

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
phy-core: phy_get: Leave error logging to the caller

In various cases errors may be expected, ie probe-deferral or a call to
phy_get from a driver where the use of a phy is optional.

Rather then adding all sort of complicated checks for this, and/or adding
special functions like devm_phy_get_optional, simply don't log an error,
and let deciding if get_phy returning an error really should result in a
dev_err up to the caller.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
phy-core: Don't propagate -ENOSUPP from phy_pm_runtime_get_sync to caller

The phy-core allows phy_init and phy_power_on to be called multiple times,
but before this patch -ENOSUPP from phy_pm_runtime_get_sync would be
propagated to the caller for the 2nd and later calls.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
ARM: sun4i: dt: Add USB host bindings

Add nodes for the usb-phy and ehci- and ohci-usb-host controllers.

Signed-off-by: Roman Byshko <rbyshko@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
ARM: sun4i: dt: Add USB host nodes to Mele A1000 dts

Add nodes for the usb-phy and ehci- and ohci-usb-host controllers.

Signed-off-by: Roman Byshko <rbyshko@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
ARM: sun4i: dt: Add USB host nodes to cubieboard dts

Add nodes for the usb-phy and ehci- and ohci-usb-host controllers.

Signed-off-by: Roman Byshko <rbyshko@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
ARM: sun4i: dt: Add USB host nodes to hackberry dts

Add nodes for the usb-phy and ehci- and ohci-usb-host controllers.

Based on fex file settings, the fex file also contains a mysterious line:
usb_hub_vcc_en_gpio = port:PB09<1><0><default><0>

Which also clashes with usbc0, which has:
usb_drv_vbus_gpio = port:PB09<1><0><default><0>

So if usb does not work properly we need someone with a hackberry to look
closer into this.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
ARM: sun4i: dt: Add USB host nodes to mini-xplus dts

Add nodes for the usb-phy and ehci- and ohci-usb-host controllers.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>