[Lenny400] Patches for linux-stable

[Paul Boddie]

Hello,

I have attached a single, combined diff for all of the changes I have done so 
far against linux-stable (changeset ef954844c7ace62f773f4f23e28d2d915adc419f).

There are probably mistakes made in this code, even though it compiles, and so 
it isn't so interesting to provide the change history because I definitely 
made mistakes and forgot things as I stumbled through the process of writing 
it. And the objectives of writing each piece of code are pretty clear, anyway, 
so there's no benefit in seeing it in "slow motion" with commentary. :-)

In any case, the logical grouping of the changes is mostly represented by the 
organisation of the code in the filesystem, with only the board and device 
tree resources integrating the new and modified functionality. Anything 
labelled jz4730 or minipc is new functionality; anything labelled jz4740 is 
modified from existing hardware support.

Affected files are as follows:

arch/mips/boot/dts/ingenic/Makefile
arch/mips/boot/dts/ingenic/jz4730.dtsi
arch/mips/boot/dts/ingenic/minipc.dts

(Device tree support, obviously.)

arch/mips/include/asm/mach-jz4740/base.h
arch/mips/include/asm/mach-jz4740/irq.h
arch/mips/include/asm/mach-jz4740/jz4730_timer.h
arch/mips/include/asm/mach-jz4740/platform.h
arch/mips/include/asm/mach-jz4740/timer.h

(Platform support, with separate timer support needing to be added.)

arch/mips/jz4740/Kconfig
arch/mips/jz4740/Makefile
arch/mips/jz4740/board-minipc.c
arch/mips/jz4740/platform.c
arch/mips/jz4740/time.c

(Board and platform support.)

drivers/clk/ingenic/Makefile
drivers/clk/ingenic/cgu.c
drivers/clk/ingenic/cgu.h
drivers/clk/ingenic/jz4730-cgu.c
include/dt-bindings/clock/jz4730-cgu.h

(Clock functionality, with modifications to the divider structures because the 
existing support seemed to write divider values directly into register fields 
that should contain values encoding a member in a particular sequence of 
values, noted in the JZ4740 and other programming manuals.)

drivers/gpio/gpio-ingenic.c
drivers/irqchip/irq-ingenic.c
drivers/pinctrl/pinctrl-ingenic.c

(Addition of pin- and interrupt-related support for the JZ4730.)

drivers/pwm/Kconfig
drivers/pwm/Makefile
drivers/pwm/pwm-jz4730.c

(A new PWM driver using the PWM peripheral on the JZ4730, based on what the 
JZ4740 driver was doing.)

drivers/rtc/Kconfig
drivers/rtc/rtc-jz4740.c

(Modifications to the RTC driver, apparently needed.)

drivers/watchdog/Kconfig
drivers/watchdog/jz4740_wdt.c

(Modifications to the watchdog timer, apparently needed.)

I will keep looking at the other areas that will need updating, but I thought 
that it might be useful to get some feedback now.

Paul
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