ARM: shmobile: r8a73a4: Remove all GPIO enums

Function GPIOs are not used anymore, and all code use the GPIO numbers
directly. Remove the GPIOs enumeration.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

sh-pfc: r8a73a4: Remove function GPIOs

All r8a73a4 platforms use the pinctrl API to control pin functions.
Function GPIOs are no longer needed.

Signed-off-by: Magnus Damm <damm@opensource.se>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: r8a73a4: Remove IRQC function GPIOs

Remove IRQ pin function GPIOs that have been deprecated by the pinctrl
API.

Signed-off-by: Magnus Damm <damm@opensource.se>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: r8a73a4: Remove SCIF function GPIOs

Remove SCIF function GPIOs that have been deprecated by the pinctrl API.

Signed-off-by: Magnus Damm <damm@opensource.se>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

sh-pfc: r8a73a4: Remove IRQC function GPIOS

The r8a73a4 board support will use the pinctrl API to control the
external IRQ pins so remove the unused function GPIOS.

Signed-off-by: Magnus Damm <damm@opensource.se>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

sh-pfc: r8a73a4: Remove SCIF function GPIOS

The r8a73a4 board support will use the pinctrl API to control the SCIF
pins, remove the corresponding unused function GPIOS.

Signed-off-by: Magnus Damm <damm@opensource.se>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

sh-pfc: r8a73a4: Add IRQC pin groups and functions

V2 of PINCTRL support for r8a73a4 IRQC hardware
and in particular the external pins IRQ0 -> IRQ57.

Signed-off-by: Magnus Damm <damm@opensource.se>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

sh-pfc: r8a73a4: Add SCIF pin groups and functions

Add PINCTRL support for r8a73a4 SCIF ports SCIFA0->SCIFA1 and
SCIFB0->SCIFB3.

Signed-off-by: Magnus Damm <damm@opensource.se>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

sh-pfc: r8a73a4: Add bias (pull-up/down) pinconf support

Implement pull-up/down support for r8a73a4 similar to the implementation
for sh73a0.

Signed-off-by: Magnus Damm <damm@opensource.se>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

sh-pfc: r8a73a4: GPIO IRQ support

V2 of code to add GPIO -> IRQ mappings to the
PFC table for the r8a73a4 SoC. Requires the IRQs
to be mapped at a fixed location in Linux IRQ
space. The actual IRQs are not handled by the
PFC, instead IRQC is used on r8a73a4.

Signed-off-by: Magnus Damm <damm@opensource.se>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

sh-pfc: r8a73a4: Support sparse GPIO numbers

The r8a73a4 SoC has sparse GPIO numbers. Declare ranges for pin numbers
in the PFC SoC data. Pin numbers shall be used with the GPIO API from
this point on.

Signed-off-by: Magnus Damm <damm@opensource.se>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

sh-pfc: Add r8a73a4 pinmux support

Add initial PFC support for the r8a73a4 SoC.

At this point only GPIO interface is supported, move to newer interfaces
planned as incremental changes.

Original authors are Morimoto-san with help from Yoshii-san, thanks to
them for the heavy lifting. Adjusted by Magnus to work together with
updated code in drivers/pinctrl.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Takashi Yoshii <takashi.yoshii.zj@renesas.com>
Signed-off-by: Magnus Damm <damm@opensource.se>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

sh-pfc: r8a7779: Split DU input and output pixel clocks

The output pixel clocks can be used without the input pixel clocks.
Split them in different groups.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

sh-pfc: r8a7779: Remove GPIO data

GPIOs are now handled by a separate driver, remove GPIO data from the
SoC information structure.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: r8a7779: Register GPIO devices

Move GPIOs handling from the PFC device to separate GPIO devices.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

sh-pfc: Configure pins as GPIOs at request time when handled externally

When a GPIO is handled by a separate driver the pinmux
gpio_set_direction() handler won't be called. The pin mux type then need
to be configured to GPIO at request time.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

sh-pfc: Skip gpiochip registration when no GPIO resource is found

Boards/platforms that register dedicated GPIO devices will not supply a
memory resource for GPIOs. Try to locate the GPIO memory resource at
initialization time, and skip registration of the gpiochip if the
resource can't be found.

This is a temporary modification to ease the transition to separate GPIO
drivers. It should be reverted when all boards and platforms will have
been moved.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

sh-pfc: Make GPIO support optional

When implemented as a separate IP block, GPIOs should be handled by a
separate driver. To make this possible GPIO support needs to be optional
in the sh-pfc driver.

If no GPIO data registers are supplied in the SoC information structure
skip registration of the gpiochip.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

sh-pfc: Make function GPIOs support optional

The target is to get rid of function GPIOs completely. To reach this,
make function GPIOs support optional by skipping the function GPIO chip
registration if no function GPIOS are defined in SoC data.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: marzen: Add GPIO LEDs

The board has 3 LEDs connected to GPIOs. Add a led-gpio device to
support them.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

gpio-rcar: Add pinctrl support

Register the GPIO pin range, and request and free GPIO pins using the
pinctrl API.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

gpio: Renesas R-Car GPIO driver V3

This patch is V3 of a GPIO driver for the R-Car series of
SoCs from Renesas. This driver is designed to be reusable
between multiple SoCs that share the same basic building block,
but so far it has only been used on R-Car H1 (r8a7779).

Each driver instance handles 32 GPIOs with individually
maskable IRQs. The driver operates on a single I/O memory
range and the 32 GPIOs are hooked up a single interrupt.

In the case of R-Car H1 either external IRQ pins or GPIOs
with interrupts can be used for on-board interupts. For
external IRQs 4 pins are supported, and in the case of GPIO
there are 202 GPIOS as 202 interrupts hooked up via 6 driver
instances and to the GIC and the Cortex-A9 Quad.

At this point this driver is interfacing as a regular
platform device driver. In the future DT support will be
submitted as an incremental feature patch.

Signed-off-by: Magnus Damm <damm@opensource.se>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: r8a7779: Remove all GPIOs

Function GPIOs are not used anymore, and all code use the GPIO numbers
directly. Remove the GPIOs enumeration.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

sh-pfc: r8a7779: Don't use GPIO enum entries

Refactor the GPIO macro magic to use GPIO numbers directly instead of
the GPIO_GP_x_y enum entries. This will allow removing the GPIO enum
entries from the mach/r8a7779.h header.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

sh-pfc: r8a7779: Remove function GPIOs

All r8a7779 platforms use the pinctrl API to control functions. Function
GPIOs are unused and unneeded, remove them.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

sh: sh7269: Fix compilation by adding missing includes

struct resource is defined in linux/ioport.h. Include it.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

sh-pfc: Fix compiler warning when BUG()

The sh_pfc_phys_to_virt() function ends with a BUG() statement without a
return. When CONFIG_BUG isn't set the function will thus have no return
value. Fix it.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

Merge branch 'soc' into pinmux-base

Conflicts:
drivers/pinctrl/sh-pfc/pfc-r8a7740.c

This merge is to provide r8a73a4 SoC files, which are added in the
soc branch and depended on by r8a73a4 pfc-changes which are to
be added to the pinmux branch.

ARM: shmobile: r8a7790 SoC 64-bit DT support

The r8a7790 SoC supports LPAE and has memory window up to
0x2ffffffff. Convert to 64-bit addresses by enlarging
#addr-cells and #size-cells to 2.

Signed-off-by: Takashi Yoshii <takashi.yoshii.zj@renesas.com>
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: r8a73a4 SoC 64-bit DT support

The r8a73a4 SoC supports LPAE and has memory window up to
0x2ffffffff. Convert to 64-bit addresses by enlarging
#addr-cells and #size-cells to 2.

Signed-off-by: Takashi Yoshii <takashi.yoshii.zj@renesas.com>
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: r8a7790 PFC support

Add a platform device for the r8a7790 PFC.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: r8a7790 IRQC support

Add IRQC interrupt controller support to r8a7790 by
hooking up a single IRQC instances to handle 4 external
IRQ signals. The IRQC controller is tied to SPIs of
the GIC. On r8a7790 the external IRQ pins routing is
handled by the PFC which is excluded from this patch.

Both platform devices and DT devices are added in this
patch. The platform device versions are used to provide
a static interrupt map configuration for board code
written in C.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: r8a7790 SCIF support

Add SCIF serial port support to the r8a7790 SoC by
adding platform devices for SCIFA0 -> SCIFA2 as well
as SCIFB0 -> SCIFB2 and SCIF0 -> SCIF1 together with
clock bindings. DT device description is excluded at
this point since such bindings are still under
development.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: Initial r8a7790 SoC support

Add initial support for the r8a7790 SoC including:
 - Single Cortex-A15 CPU Core
 - GIC
 - Architecture timer

No static virtual mappings are used, all the components
make use of ioremap(). DT_MACHINE_START is still wrapped
in CONFIG_USE_OF to match other mach-shmobile code.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: r8a7779: move global functions to r8a7779.h

There is no reason each CPU's own function has to exist in common.h.
r8a7779_xxx() go to r8a7779.h

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: r8a7740: move global functions to r8a7740.h

There is no reason each CPU's own function has to exist in common.h.
r8a7740_xxx() go to r8a7740.h

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: sh73a0: move global functions to sh73a0.h

There is no reason each CPU's own function has to exist in common.h.
sh73a0_xxx() go to sh73a0.h

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: sh7372: move global functions to sh7372.h

There is no reason each CPU's own function has to exist in common.h.
sh7372_xxx() go to sh7372.h

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: r8a7779: remove DIV4 clocks and use fixed ratio clock

R-Car H1 has many clocks, and it is possible to read/use clock ratio
of these clocks from FRQMRx as DIV4 clocks.
But, these ratio are fixed value and these are decided
by MD pin status.
This means that we can use fixed ratio clock via MD pin status,
instead of DIV4 clocks.

This patch reads MD pin status, and sets PLLA clock (= root clock),
and used fixed ratio clock for other clocks.
It was tesed on marzen board.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: r8a7740: use fixed ratio clock

Current clock-r8a7740 is using own implement
for each divX clocks.
This patch switches to use fixed ratio clock,
and was tesed on armadillo board.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: r8a7740: tidyup comment/implementation mismatch

Current clock-r8a7740's DIV4/DIV6/MSTP implemented area and
its comment are mismatching.
This patch tidyup its comment/implementation area.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: sh73a0: use fixed ratio clock

Current clock-sh73a0 is using own implement
for each divX clocks.
This patch switches to use fixed ratio clock,
and was tesed on kzm9g board.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: sh7372: use fixed ratio clock

Current clock-sh7372 is using own implement
for each divX clocks.
This patch switches to use fixed ratio clock,
and was tesed on mackerel board.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: add struct clk_ratio and fixed ratio clock macro

Renesas chip has many clocks inside,
and some of them are using fixed ratio via parent clock.
Current shmobile clock code is using own divX_recalc function
and divX_clk_ops.
This patch can reduce these code

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: sh7372: remove DIV4_ZT* clocks

DIV4_ZT* clocks are for debugging and trace bus clock.
It is not necessary to control it from Linux/Software.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: sh73a0: remove DIV4_ZT* clocks

DIV4_ZT* clocks are for debugging and trace bus clock.
It is not necessary to control it from Linux/Software.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: sh73a0: add a TWD clock

Add a TWD clock on sh73a0 for the smp_twd driver to properly update the
clock's frequency upon cpufreq events.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: r8a7740: Migrate from INTC to GIC

With the added capabilty of the intc_irqpin driver to handle shared
external IRQs, all prerequisites are fulfilled and we are ready to
migrate completely to GIC. This includes the following steps:

- Kconfig: select ARM_GIC and RENESAS_INTC_IRQPIN
- intc-r8a7740: Throw out all legacy INTC code and init the GIC. We need
   to mask out all shared IRQs as it is needed by the
shared intc_irqpin driver.
- setup-r8a7740: Add 4 irqpin devices to handle external IRQs and update
all IRQ numbers to point to the GIC SPI.
- board-armadillo: Update all IRQ numbers to point to the GIC SPI.
- pfc-r8a7740: Update all IRQ numbers of the GPIOs to point to the GIC
SPI.

Signed-off-by: Bastian Hecht <hechtb+renesas@gmail.com>
Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: r8a73a4: add thermal driver support

You can get current thermal by
> cat /sys/class/thermal/thermal_zone?/temp

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: Disallow PINCTRL without GPIOLIB

Modify mach-shmobile to only select PINCTRL in case of
ARCH_WANT_OPTIONAL_GPIOLIB is set.

This fixes a build error triggered when adding a new SoC
lacking GPIO software support (ARCH_WANT_OPTIONAL_GPIOLIB=n):

 CC      drivers/tty/vt/keyboard.o
In file included from drivers/pinctrl/core.c:30:0:
include/asm-generic/gpio.h: In function 'gpio_get_value_cansleep':
include/asm-generic/gpio.h:270:2: error: implicit declaration of function '__gpio_get_value'
include/asm-generic/gpio.h: In function 'gpio_set_value_cansleep':
include/asm-generic/gpio.h:276:2: error: implicit declaration of function '__gpio_set_value'
drivers/pinctrl/core.c: In function 'pinctrl_ready_for_gpio_range':
drivers/pinctrl/core.c:297:9: error: implicit declaration of function 'gpio_to_chip'
drivers/pinctrl/core.c:297:27: warning: initialization makes pointer from integer without a cast
drivers/pinctrl/core.c:304:45: error: dereferencing pointer to incomplete type
drivers/pinctrl/core.c:305:26: error: dereferencing pointer to incomplete type
drivers/pinctrl/core.c:305:39: error: dereferencing pointer to incomplete type
make[2]: *** [drivers/pinctrl/core.o] Error 1
make[1]: *** [drivers/pinctrl] Error 2
make[1]: *** Waiting for unfinished jobs....
  LD      drivers/sh/built-in.o

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: sh73a0: add irqpin DT nodes

Add DT nodes for the 4 irqpin interrupt controllers on sh73a0. We add them
to sh73a0.dtsi, which is also used by configurations, doing all their
device instantiation from board the .c code. We rely on the fact, that
such configurations don't instantiate devices from the device-tree.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: r8a7778 SCIF support

Add SCIF serial port support to the r8a7778 SoC by
adding platform devices together with clock bindings.
DT device description is excluded at this point since
such bindings are still under development.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: add R8A7778 basis support

Add initial support for the R8A7778 R-Car M1A SoC.
No static virtual mappings are used, all the components
make use of ioremap().
DT_MACHINE_START is still wrapped
in CONFIG_USE_OF to match other mach-shmobile code.

It is based on v1.0 datasheet

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: sh73a0: wait for completion when kicking the clock

To reconfigure clocks, controlled by FRQCRA and FRQCRB, a kick bit has to
be set and to make sure the setting has taken effect, it has to be read
back repeatedly until it is cleared by the hardware. This patch adds the
waiting part, that was missing until now.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: Magnus Damm <damm@opensource.se
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: r8a73a4 PFC support

Add a platform device for the r8a73a4 PFC.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: r8a73a4 IRQC support V2

Add IRQC interrupt controller support to r8a73a4 by
hooking up two IRQC instances to handle 58 external
IRQ signals. There IRQC controllers are tied to SPIs
of the GIC. On r8a73a4 exact IRQ pin routing is handled
by the PFC which is excluded from this patch.

Both platform devices and DT devices are added in this
patch. The platform device versions are used to provide
a static interrupt map configuration for board code
written in C.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: r8a73a4 SCIF support V3

V3 of SCIF serial port support for the r8a73a4 SoC.
This is done by adding platform devices for SCIFA0
-> SCIFA1 as well as SCIFB0 -> SCIFB3 together with
clock bindings. DT device description is excluded at
this point since such bindings are still under
development.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: Initial r8a73a4 SoC support V3

V3 of initial support for the r8a73a4 SoC including:
 - Single Cortex-A15 CPU Core
 - GIC
 - Architecture timer

No static virtual mappings are used, all the components
make use of ioremap(). DT_MACHINE_START is still wrapped
in CONFIG_USE_OF to match other mach-shmobile code.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

Merge tag 'renesas-intc-external-irq2-for-v3.10' into soc-base

Update for Renesas INTC External IRQ pin driver for v3.10

This adds support for shared interrupt lines to the
Renesas INTC External IRQ pin driver which has already
been queued up for v3.10 (tag renesas-intc-external-irq-for-v3.10).

The patch "irqchip: intc-irqpin: Add support for shared interrupt lines"
in renesas-intc-external-irq2-for-v3.10 is a dependency for
"ARM: shmobile: r8a7740: Migrate from INTC to GIC". That dependency is
the reason for this merge.

irqchip: intc-irqpin: Add support for shared interrupt lines

On some hardware we don't have a 1-1 mapping from the external
interrupts coming from INTC to the GIC SPI pins. We can however
share lines to demux incoming IRQs on these SoCs.

This patch enables the intc_irqpin driver to detect requests for shared
interrupt lines and demuxes them properly by querying the INTC INTREQx0A
registers.

If you need multiple shared intc_irqpin device instances, be sure to mask
out all interrupts on the INTC that share the one line before you start
to register them. Else you run into IRQ floods that would be caused by
interrupts for which no handler has been set up yet when the first
intc_irqpin device is registered.

Signed-off-by: Bastian Hecht <hechtb+renesas@gmail.com>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

irqchip: irqc: Add DT support

Add DT support to the IRQC External IRQ Pin driver.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

irqchip: intc-irqpin: Initial DT support

Add initial DT support to the INTC External IRQ Pin
driver. At this point only hardware with 4-bit wide
sense registers is supported via DT.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: Make r8a7779 INTC irqpin platform data static

The platform data for the INTC irq pin driver
seems to be global symbols, make it static to
allow multi-soc build.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: Make sh73a0 INTC irqpin platform data static

The platform data for the INTC irq pin driver
seems to be global symbols, make it static to
allow multi-soc build.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

irqchip: Renesas IRQC driver

This patch adds a driver for external IRQ pins connected
to the IRQC hardware block on recent SoCs from Renesas.

The IRQC hardware block is used together with more
recent ARM based SoCs using the GIC. As usual the GIC
requires external IRQ trigger setup somewhere else
which in this particular case happens to be IRQC.

This driver implements the glue code needed to configure
IRQ trigger and also handle mask/unmask and demux of
external IRQ pins hooked up from the IRQC to the GIC.

Tested on r8a73a4 but is designed to work with a wide
range of SoCs. The driver requires one GIC SPI per
external IRQ pin to operate.  Each driver instance
will handle up to 32 external IRQ pins.

The SoCs using this driver are currently mainly used
together with regular platform devices so this driver
allows configuration via platform data to support things
like static interrupt base address. DT support will
be added incrementally in the not so distant future.

Signed-off-by: Magnus Damm <damm@opensource.se>
Tested-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

irqchip: intc-irqpin: GPL header for platform data

Add GPL header to platform data include file.

Signed-off-by: Magnus Damm <damm@opensource.se>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

irqchip: intc-irqpin: Make use of devm functions

Use devm_kzalloc(), devm_ioremap_nocache()
and devm_request_irq() to simplify error
handling.

Signed-off-by: Magnus Damm <damm@opensource.se>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

irqchip: intc-irqpin: Add force comments

Add comments to describe the special case for
"force" versions of enable and disable functions.

Signed-off-by: Magnus Damm <damm@opensource.se>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

irqchip: intc-irqpin: Cache mapped IRQ

Cache IRQ in domain_irq variable instead of
making use of irq_find_mapping(). While at it
rename the irq variable to requested_irq.

Signed-off-by: Magnus Damm <damm@opensource.se>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

irqchip: intc-irqpin: Whitespace fixes

Remove whitespace damage and add newline
between variables and code.

Signed-off-by: Magnus Damm <damm@opensource.se>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: INTC External IRQ pin driver on r8a7779

Update the r8a7779 IRQ code to make use of the
INTC External IRQ pin driver for external
interrupt pins IRQ0 -> IRQ3.

The r8a7779 SoC can like older SH SoCs configure
to use the IRQ0 -> IRQ3 signals as individual
interrupts or a combined IRL mode.

Without this patch the r8a7779 SoC code does
not fully support external IRQ pins in individual
IRQ mode. The r8a7779 PFC code does not yet have
gpio_to_irq() support so no need to update such
code.

At this point the DT reference implementations
are not covered. In the future such code shall
tie in the INTC External IRQ pin driver via
DT, so this kind of verbose code is not needed
for the long term DT case.

Signed-off-by: Magnus Damm <damm@opensource.se>
Tested-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: INTC External IRQ pin driver on sh73a0

Adjust the sh73a0 IRQ code to make use of the
INTC External IRQ pin driver for external
interrupt pins IRQ0 -> IRQ31.

This removes quite a bit of special-case code
in intc-sh73a0.c but the number of lines get
replaced with platform device information in
setup-sh73a0.c. The PFC code is also adjusted
to make gpio_to_irq() return the correct
interrupt number.

At this point the DT reference implementations
are not covered. In the future such code shall
tie in the INTC External IRQ pin driver via
DT, so this kind of verbose code is not needed
for the long term DT case.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: irq_pin() for static IRQ pin assignment

Add the macro irq_pin() to let board-specific code using
platform devices tie in external IRQn pins in a common way.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

irqchip: Renesas INTC External IRQ pin driver

This patch adds a driver for external IRQ pins connected
to the INTC block on recent SoCs from Renesas.

The INTC hardware block usually contains a rather wide
range of features ranging from external IRQ pin handling
to legacy interrupt controller support. On older SoCs
the INTC is used as a general purpose interrupt controller
both for external IRQ pins and on-chip devices.

On more recent ARM based SoCs with Cortex-A9 the main
interrupt controller is the GIC, but IRQ trigger setup
still need to happen in the INTC hardware block.

This driver implements the glue code needed to configure
IRQ trigger and also handle mask/unmask and demux of
external IRQ pins hooked up from the INTC to the GIC.

Tested on sh73a0 and r8a7779. The hardware varies quite
a bit with SoC model, for instance register width and
bitfield widths vary wildly. The driver requires one GIC
SPI per external IRQ pin to operate.  Each driver instance
will handle up to 8 external IRQ pins.

The SoCs using this driver are currently mainly used
together with regular platform devices so this driver
allows configuration via platform data to support things
like static interrupt base address. DT support will
be added incrementally in the not so distant future.

Signed-off-by: Magnus Damm <damm@opensource.se>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

r8a7779: Add Display Unit clock support

Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
[Rename device from to rcarfb to rcar-du]
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
[Manual conflict resolution]
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: r8a7779: Remove INTC function GPIOs

Those GPIOs have been deprecated by the pinctrl API. They are unused and
unneeded, remove them.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

ARM: shmobile: r8a7779: Remove LBSC function GPIOs

Those GPIOs have been deprecated by the pinctrl API. They are unused and
unneeded, remove them.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

ARM: shmobile: r8a7779: Remove USB function GPIOs

Those GPIOs have been deprecated by the pinctrl API. They are unused and
unneeded, remove them.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

ARM: shmobile: r8a7779: Remove HSPI function GPIOs

Those GPIOs have been deprecated by the pinctrl API. They are unused and
unneeded, remove them.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

ARM: shmobile: r8a7779: Remove SCIF function GPIOs

Those GPIOs have been deprecated by the pinctrl API. They are unused and
unneeded, remove them.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

ARM: shmobile: r8a7779: Remove SDHI and MMCIF function GPIOs

Those GPIOs have been deprecated by the pinctrl API. They are unused and
unneeded, remove them.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

ARM: shmobile: r8a7779: Remove DU function GPIOs

Those GPIOs have been deprecated by the pinctrl API. They are unused and
unneeded, remove them.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

ARM: shmobile: r8a7779: Remove DU1_DOTCLKOUT1 GPIO

The function is not documented in the r8a7779 datasheet. Remove it.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

ARM: shmobile: r8a7740: Remove SDHI and MMCIF function GPIOs

Those GPIOs have been deprecated by the pinctrl API. They are unused and
unneeded, remove them.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

ARM: shmobile: r8a7740: Remove LCD0 and LCD1 function GPIOs

Those GPIOs have been deprecated by the pinctrl API. They are unused and
unneeded, remove them.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

ARM: shmobile: sh73a0: Remove IrDA function GPIOs

Those GPIOs have been deprecated by the pinctrl API. They are unused and
unneeded, remove them.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

ARM: shmobile: sh73a0: Remove USB function GPIOs

Those GPIOs have been deprecated by the pinctrl API. They are unused and
unneeded, remove them.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

ARM: shmobile: sh73a0: Remove BSC function GPIOs

Those GPIOs have been deprecated by the pinctrl API. They are unused and
unneeded, remove them.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

ARM: shmobile: sh73a0: Remove KEYSC function GPIOs

Those GPIOs have been deprecated by the pinctrl API. They are unused and
unneeded, remove them.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

ARM: shmobile: sh73a0: Remove pull-up function GPIOS

Those GPIOs have been deprecated by the pinconf API. They are unused and
unneeded, remove them.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

ARM: shmobile: sh73a0: Remove FSI function GPIOs

Those GPIOs have been deprecated by the pinctrl API. They are unused and
unneeded, remove them.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

ARM: shmobile: sh73a0: Remove I2C function GPIOs

Those GPIOs have been deprecated by the pinctrl API. They are unused and
unneeded, remove them.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

ARM: shmobile: sh73a0: Remove SCIFA and SCIFB function GPIOs

Those GPIOs have been deprecated by the pinctrl API. They are unused and
unneeded, remove them.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

ARM: shmobile: sh73a0: Remove LCDC and LCDC2 function GPIOs

Those GPIOs have been deprecated by the pinctrl API. They are unused and
unneeded, remove them.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

ARM: shmobile: sh7372: Remove SDHI and MMCIF function GPIOs

Those GPIOs have been deprecated by the pinctrl API. They are unused and
unneeded, remove them.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

sh-pfc: r8a7779: Remove INTC function GPIOS

All r8a7779 platforms now use the pinctrl API to control the INTC pins,
the corresponding function GPIOS are unused. Remove them.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>

sh-pfc: r8a7779: Remove LBSC function GPIOS

All r8a7779 platforms now use the pinctrl API to control the LBSC pins,
the corresponding function GPIOS are unused. Remove them.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>

sh-pfc: r8a7779: Remove USB function GPIOS

All r8a7779 platforms now use the pinctrl API to control the USB pins,
the corresponding function GPIOS are unused. Remove them.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>

sh-pfc: r8a7779: Remove HSPI function GPIOS

All r8a7779 platforms now use the pinctrl API to control the HSPI pins,
the corresponding function GPIOS are unused. Remove them.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>

sh-pfc: r8a7779: Remove SCIF function GPIOS

All r8a7779 platforms now use the pinctrl API to control the SCIF pins,
the corresponding function GPIOS are unused. Remove them.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>