Add basic Bock-W board support

More devices will be added on top of this patch after
PICNTRL and clock framework are in better shape.

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

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>

This reverts commit 626a645e.

This appears to be incompatible with
"ARM: shmobile: sh7372: Remove SDHI and MMCIF function GPIOs"

Reverting this change resolves the following build failure:

arch/arm/mach-shmobile/board-mackerel.c: In function ‘mackerel_init’:
arch/arm/mach-shmobile/board-mackerel.c:1468: error: ‘GPIO_FN_SDHICMD1’ undeclared (first use in this function)
arch/arm/mach-shmobile/board-mackerel.c:1468: error: (Each undeclared identifier is reported only once
arch/arm/mach-shmobile/board-mackerel.c:1468: error: for each function it appears in.)
arch/arm/mach-shmobile/board-mackerel.c:1469: error: ‘GPIO_FN_SDHICLK1’ undeclared (first use in this function)
arch/arm/mach-shmobile/board-mackerel.c:1470: error: ‘GPIO_FN_SDHID1_3’ undeclared (first use in this function)
arch/arm/mach-shmobile/board-mackerel.c:1471: error: ‘GPIO_FN_SDHID1_2’ undeclared (first use in this function)
arch/arm/mach-shmobile/board-mackerel.c:1472: error: ‘GPIO_FN_SDHID1_1’ undeclared (first use in this function)
arch/arm/mach-shmobile/board-mackerel.c:1473: error: ‘GPIO_FN_SDHID1_0’ undeclared (first use in this function)
arch/arm/mach-shmobile/board-mackerel.c:1489: error: ‘GPIO_FN_SDHICMD2’ undeclared (first use in this function)
arch/arm/mach-shmobile/board-mackerel.c:1490: error: ‘GPIO_FN_SDHICLK2’ undeclared (first use in this function)
arch/arm/mach-shmobile/board-mackerel.c:1491: error: ‘GPIO_FN_SDHID2_3’ undeclared (first use in this function)
arch/arm/mach-shmobile/board-mackerel.c:1492: error: ‘GPIO_FN_SDHID2_2’ undeclared (first use in this function)
arch/arm/mach-shmobile/board-mackerel.c:1493: error: ‘GPIO_FN_SDHID2_1’ undeclared (first use in this function)
arch/arm/mach-shmobile/board-mackerel.c:1494: error: ‘GPIO_FN_SDHID2_0’ undeclared (first use in this function)

Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>