ARM: PXA SoCs: irq_data conversion.

Signed-off-by: Lennert Buytenhek <buytenh@secretlab.ca>

ARM: pxa: sanitize IRQ registers access based on offset

Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>

ARM: pxa: redefine irqs.h

Define all IRQs in irqs.h. If some IRQs are sharing one IRQ number, define
them together. If some IRQs are sharing same name with different IRQ number,
define different IRQ

ARM: pxa: redefine irqs.h

Define all IRQs in irqs.h. If some IRQs are sharing one IRQ number, define
them together. If some IRQs are sharing same name with different IRQ number,
define different IRQ.

Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
Cc: Eric Miao <eric.y.miao@gmail.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>

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[ARM] pxa: fix irq suspend/resume for pxa25x

PXA25x does not have IPR registers, saving and restoring should happen
only for pxa27x and pxa3xx.

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

[ARM] pxa: fix resume failure by saving/restoring IPRx registers

Since interrupt handler is changed to use interrupt priority, we also need
to save and restore these interrupt controller registers i

[ARM] pxa: fix resume failure by saving/restoring IPRx registers

Since interrupt handler is changed to use interrupt priority, we also need
to save and restore these interrupt controller registers in suspend/resume
routine.

Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
Tested-by: Daniel Mack <daniel@caiaq.de>
Tested-by: Pavel Machek <pavel@ucw.cz>
Tested-by: Robert Jarzmik <robert.jarzmik@free.fr>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>

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[ARM] pxa: initialize default interrupt priority and use ICHP for IRQ handling

Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>

[ARM] pxa: separate definitions from pxa-regs.h and remove it finally

The remaining registers are separated into:

- <mach/regs-ost.h>
- <mach/regs-rtc.h>
- <mach/regs-intc.h>

and then we

[ARM] pxa: separate definitions from pxa-regs.h and remove it finally

The remaining registers are separated into:

- <mach/regs-ost.h>
- <mach/regs-rtc.h>
- <mach/regs-intc.h>

and then we can remove pxa-regs.h completely. Instead of #include this
file, let's:

1. include the specific <mach/regs-*.h> with care (if that's absolutely
necessary)

2. define the registers in the driver, make cleanly defined API to expose
the register access to external with sufficient reason

Signed-off-by: Eric Miao <eric.miao@marvell.com>

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[ARM] pxa: move IRQ handling of GPIO 0 and 1 outside of gpio.c

This is part of the work making gpio.c generic enough, the changes
include:

1. move IRQ handling of GPIO 0 and 1 outside (and back int

[ARM] pxa: move IRQ handling of GPIO 0 and 1 outside of gpio.c

This is part of the work making gpio.c generic enough, the changes
include:

1. move IRQ handling of GPIO 0 and 1 outside (and back into irq.c)

2. pxa_init_gpio() accepts a range for muxed GPIO IRQs, and an IRQ
number for the muxed GPIOs

3. __gpio_is_occupied() and __gpio_is_inverted() are made inline,
and are moved into <mach/gpio.h> instead of generic gpio.c

Signed-off-by: Eric Miao <eric.miao@marvell.com>

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[ARM] 5233/1: Allow PXA to have ISA IRQs numbered 0-15

Allow PXA IRQs to be numbered starting at 16, leaving 0 to 15 for the
ISA IRQs, if needed.

This patch depends on RMK's PXA_HAVE_BOARD_IRQS pat

[ARM] 5233/1: Allow PXA to have ISA IRQs numbered 0-15

Allow PXA IRQs to be numbered starting at 16, leaving 0 to 15 for the
ISA IRQs, if needed.

This patch depends on RMK's PXA_HAVE_BOARD_IRQS patch.

Signed-off-by: Marc Zyngier <marc.zyngier@altran.com>
Acked-by: Russel King <linux@arm.linux.org.uk>
Acked-by: Eric Miao <eric.y.miao@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

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[ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach

This just leaves include/asm-arm/plat-* to deal with.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

[ARM] Remove asm/hardware.h, use asm/arch/hardware.h instead

Remove includes of asm/hardware.h in addition to asm/arch/hardware.h.
Then, since asm/hardware.h only exists to include asm/arch/hardware

[ARM] Remove asm/hardware.h, use asm/arch/hardware.h instead

Remove includes of asm/hardware.h in addition to asm/arch/hardware.h.
Then, since asm/hardware.h only exists to include asm/arch/hardware.h,
update everything to directly include asm/arch/hardware.h and remove
asm/hardware.h.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

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[ARM] 5135/1: pxa: drop superfluous asm/arch/pxa2xx-gpio.h includes

Both i2c-pxa.c and irq.c still include pxa2xx-gpio.h although is is not
needed anymore.

Signed-off-by: Philipp Zabel <philipp.zab

[ARM] 5135/1: pxa: drop superfluous asm/arch/pxa2xx-gpio.h includes

Both i2c-pxa.c and irq.c still include pxa2xx-gpio.h although is is not
needed anymore.

Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Acked-by: Eric Miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

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[ARM] pxa: separate GPIOs and their mode definitions to pxa2xx-gpio.h

two reasons:
1. GPIO namings and their mode definitions are conceptually not part
of the PXA register definitions

2. this is

[ARM] pxa: separate GPIOs and their mode definitions to pxa2xx-gpio.h

two reasons:
1. GPIO namings and their mode definitions are conceptually not part
of the PXA register definitions

2. this is actually a temporary move in the transition of PXA2xx to
use MFP-alike APIs (as what PXA3xx is now doing), so that legacy
code will still work and new code can be added in step by step

Signed-off-by: eric miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

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[ARM] pxa: merge assignment of set_wake into pxa_init_{irq,gpio}()

To further clean up the GPIO and IRQ structure:

1. pxa_init_irq_gpio() and pxa_init_gpio() combines into a single
function pxa_

[ARM] pxa: merge assignment of set_wake into pxa_init_{irq,gpio}()

To further clean up the GPIO and IRQ structure:

1. pxa_init_irq_gpio() and pxa_init_gpio() combines into a single
function pxa_init_gpio()

2. assignment of set_wake merged into pxa_init_{irq,gpio}() as
an argument

Signed-off-by: eric miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

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[ARM] pxa: integrate low IRQ chip (ICIP) and high IRQ chip (ICIP2) into one

This makes the code better organized and simplified a bit. The change
will lose a bit of performance when performing IRQ

[ARM] pxa: integrate low IRQ chip (ICIP) and high IRQ chip (ICIP2) into one

This makes the code better organized and simplified a bit. The change
will lose a bit of performance when performing IRQ ack/mask/unmask,but
that's not too much after checking the result binary.

This patch also removes the ugly #ifdef CONFIG_PXA27x .. #endif by
carefully not to access those pxa{27x,3xx} specific registers, this
is done by keeping an internal IRQ number variable. The pxa-regs.h
is also modified so registers for IRQ > PXA_IRQ(31) are made public
even if CONFIG_PXA{27x,3xx} isn't defined (for pxa25x's sake)

The incorrect assumption in the original code that internal irq starts
from 0 is also corrected by comparing with PXA_IRQ(0).

"struct sys_device" for the IRQ are reduced into one single device on
pxa{27x,3xx}.

Signed-off-by: eric miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

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[ARM] pxa: move GPIO IRQ specific code out of irq.c into gpio.c

Signed-off-by: eric miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

[ARM] pxa: cleanup the coding style of pxa_gpio_set_type()

by

1. wrapping long lines and making comments tidy

2. using IRQ_TYPE_* instead of migration macros __IRQT_*

3. introduce a pr_debug() fo

[ARM] pxa: cleanup the coding style of pxa_gpio_set_type()

by

1. wrapping long lines and making comments tidy

2. using IRQ_TYPE_* instead of migration macros __IRQT_*

3. introduce a pr_debug() for the commented printk(KERN_DEBUG ...)
stuff

Signed-off-by: eric miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

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[ARM] pxa: make GPIO IRQ code less dependent on the internal IRQs

by:

1. introduce dedicated pxa_{mask,unmask}_low_gpio()

2. remove set_irq_chip(IRQ_GPIO_2_x, ...) which has already been
initia

[ARM] pxa: make GPIO IRQ code less dependent on the internal IRQs

by:

1. introduce dedicated pxa_{mask,unmask}_low_gpio()

2. remove set_irq_chip(IRQ_GPIO_2_x, ...) which has already been
initialized in pxa_init_irq()

3. introduce dedicated pxa_init_gpio_set_wake()

Signed-off-by: eric miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

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[ARM] pxa: generalize the muxed gpio IRQ handling code with loop and ffs()

1. As David Brownell suggests, using ffs() is going to make the loop
a bit faster (by avoiding unnecessary shift and ite

[ARM] pxa: generalize the muxed gpio IRQ handling code with loop and ffs()

1. As David Brownell suggests, using ffs() is going to make the loop
a bit faster (by avoiding unnecessary shift and iteration)

2. Russell suggested find_{first,next}_bit() being used with the
gedr[] array

Signed-off-by: eric miao <eric.miao@marvell.com>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

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gpiolib support for the PXA architecture

This adds gpiolib support for the PXA architecture:
- move all GPIO API functions from generic.c into gpio.c
- convert the gpio_get/set_value macros into

gpiolib support for the PXA architecture

This adds gpiolib support for the PXA architecture:
- move all GPIO API functions from generic.c into gpio.c
- convert the gpio_get/set_value macros into inline functions

This makes it easier to hook up GPIOs provided by external chips like
ASICs and CPLDs.

Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Jean Delvare <khali@linux-fr.org>
Cc: Eric Miao <eric.miao@marvell.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Haavard Skinnemoen <hskinnemoen@atmel.com>
Cc: Ben Gardner <bgardner@wabtec.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
[ Minor ARM fixup from David Brownell folded into this ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

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[ARM] pxa: introduce sysdev for IRQ register saving/restoring

Signed-off-by: eric miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

[ARM] pxa: PXA3xx base support

Signed-off-by: eric miao <eric.y.miao@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

[ARM] 4560/1: pxa: move processor specific set_wake logic out of irq.c

a function pxa_init_irq_set_wake() was introduced, so that
processor specific code could install their own version

code settin

[ARM] 4560/1: pxa: move processor specific set_wake logic out of irq.c

a function pxa_init_irq_set_wake() was introduced, so that
processor specific code could install their own version

code setting PFER and PRER registers within pxa_gpio_irq_type
are removed, and the edge configuration is postponed to the
(*set_wake) and copies the GRER and GFER register, which will
always be set up correctly by pxa_gpio_irq_type()

Signed-off-by: eric miao <eric.y.miao@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

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[ARM] 4559/1: pxa: make PXA_LAST_GPIO a run-time variable

This definition produces processor specific code in generic function
pxa_gpio_mode(), thus creating inconsistencies for support of pxa25x
an

[ARM] 4559/1: pxa: make PXA_LAST_GPIO a run-time variable

This definition produces processor specific code in generic function
pxa_gpio_mode(), thus creating inconsistencies for support of pxa25x
and pxa27x in a single zImage.

As David Brownell suggests, make it a run-time variable and initialize
at run-time according to the number of GPIOs on the processor. For now
the initialization happens in pxa_init_irq_gpio(), since there is
already a parameter for that, besides, this is and MUST be earlier
than any subsequent calls to pxa_gpio_mode().

Signed-off-by: eric miao <eric.y.miao@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

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[ARM] 4557/1: Fix PXA irq gpio initialization

As pointed out by Jrgen, we are overflowing the number of GPIOs
in pxa_init_irq_gpio(). I'm seeing the same problem on my HTC
Universal PXA270 based PDA

[ARM] 4557/1: Fix PXA irq gpio initialization

As pointed out by Jrgen, we are overflowing the number of GPIOs
in pxa_init_irq_gpio(). I'm seeing the same problem on my HTC
Universal PXA270 based PDA.
According to Eric, the function argument is the number of GPIOs,
so we should keep the semantics and reduce the number of
iteration by 1.

Signed-off-by: Samuel Ortiz <sameo@openedhand.com>
Acked-by: Jrgen Schindele <linux@schindele.name>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

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