Move irq-mmp driver from mach-mmp directory into irqchip directory.
It's used to support multiple platform.
Signed-off-by: NHaojian Zhuang <haojian.zhuang@gmail.com>

Using for_each_set_bit() to simplify the code.

spatch with a semantic match is used to found this.
(http://coccinelle.lip6.fr/)
Signed-off-by: NWei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: NHaojian Zhuang <haojian.zhuang@gmail.com>

While supporting board in non-DT mode, icu_data[i]->cascade_irq isn't
assigned with correct value.
Signed-off-by: NHaojian Zhuang <haojian.zhuang@gmail.com>

add suspend/resume functionality for pxa910
Signed-off-by: NChao Xie <chao.xie@marvell.com>
Signed-off-by: NRaul Xiong <xjian@marvell.com>
Signed-off-by: NHaojian Zhuang <haojian.zhuang@gmail.com>

MMP2 can enter system sleep level during suspend.
It can be waken up by PMIC interrupt, RTC/ALARM.
Signed-off-by: NChao Xie <chao.xie@marvell.com>
Signed-off-by: NHaojian Zhuang <haojian.zhuang@gmail.com>

Merge irq-pxa168 and irq-mmp2. And support device tree also.

Since CONFIG_SPARSE_IRQ is enabled in arch-mmp, base irq starts from
NR_IRQS_LEGACY.
Signed-off-by: NHaojian Zhuang <haojian.zhuang@gmail.com>
Acked-by: NArnd Bergmann <arnd@arndb.de>

Signed-off-by: NEric Miao <eric.y.miao@gmail.com>

"""The Marvell® PXA168 processor is the first in a family of application
processors targeted at mass market opportunities in computing and consumer
devices. It balances high computing and multimedia performance with low
power consumption to support extended battery life, and includes a wealth
of integrated peripherals to reduce overall BOM cost .... """

See http://www.marvell.com/featured/pxa168.jsp for more information.

  1. Marvell Mohawk core is a hybrid of xscale3 and its own ARM core,
     there are many enhancements like instructions for flushing the
     whole D-cache, and so on

  2. Clock reuses Russell's common clkdev, and added the basic support
     for UART1/2.

  3. Devices are a bit different from the 'mach-pxa' way, the platform
     devices are now dynamically allocated only when necessary (i.e.
     when pxa_register_device() is called). Description for each device
     are stored in an array of 'struct pxa_device_desc'. Now that:

     a. this array of device description is marked with __initdata and
        can be freed up system is fully up

     b. which means board code has to add all needed devices early in
        his initializing function

     c. platform specific data can now be marked as __initdata since
        they are allocated and copied by platform_device_add_data()

  4. only the basic UART1/2/3 are added, more devices will come later.
Signed-off-by: NJason Chagas <chagas@marvell.com>
Signed-off-by: NEric Miao <eric.miao@marvell.com>