Convert some ARM architecture's common code to using
struct syscore_ops objects for power management instead of sysdev
classes and sysdevs.
This simplifies the code and reduces the kernel's memory footprint.
It also is necessary for removing sysdevs from the kernel entirely in
the future.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Reorder
irq_set_chip()
irq_set_chip_data()
irq_set_handler()
to
irq_set_chip()
irq_set_handler()
irq_set_chip_data()
so the next patch can combine irq_set_chip() and irq_set_handler() to
irq_set_chip_and_handler().
Automated conversion with coccinelle.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This factors out the common initialization code for the two vic
vendors into easier maintainable functions.
Tested-by: Linus Walleij <linus.walleij@stericsson.com>
Tested-by: Alessandro Rubini <rubini@unipv.it>
Cc: Andrea Gallo <andrea.gallo@stericsson.com>
Cc: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This reorganizes the vic.c code in anticipation of a second patch
to use struct vic_device as the data stored in set_irq_chip_data().
The code now has the following flow:
1) struct vic_device definition, static variables, and to_vic()
moved to the start of the code.
2) common code (vic_init2)
3) vic power management callbacks
4) vic power management initialization/registration
5) irq_chip callbacks
6) vendor specific vic initialization
7) vic initialization
In addition the typo vik_init_st is fixed (vic_init_st).
There is no functional change with this patch.
Tested-by: Linus Walleij <linus.walleij@stericsson.com>
Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Alessandro Rubini <rubini-list@gnudd.com>
Comments from Hartley Sweeten:
Please change from Cc to:
Tested-by: Alessandro Rubini <rubini@unipv.it>
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Currently build with the next head fails on archs using PL190
VIC because when we include amba/bus.h we need to include
device.h first.
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This moves the primecell vendor enum definition inside vic.c
out to linux/amba/bus.h where it belongs and replace any
occurances of specific vendor ID:s with the respective enums
instead.
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The PrimeCell Vectored Interrupt Controller offers a way to trigger
any interrupt through software. This is a useful tool for developing,
but such software interrupt can only be acked by writing a bit in the
"software clear" register, or the handler will loop forever. This
splits ack from mask, and acks the soft irq in case it was the source.
Signed-off-by: Alessandro Rubini <rubini@unipv.it>
Acked-by: Andrea Gallo <andrea.gallo@stericsson.com>
Acked-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The Nomadik SoC (not yet merged) has a modified PL090 VIC cell. This adds
support for it by reading the PrimeCell ID at the end of the page and
calling a separate init function.
Signed-off-by: Alessandro Rubini <rubini@unipv.it>
Acked-by: Andrea Gallo <andrea.gallo@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Add power management support to the VIC by registering
each VIC as a system device to get suspend/resume
events going.
Since the VIC registeration is done early, we need to
record the VICs in a static array which is used to add
the system devices later once the initcalls are run. This
means there is now a configuration value for the number
of VICs in the system.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
The VIC code will attempt to perform som
default set_irq_chip() and set_irq_chip_data()
on all IRQs supported by the VIC, while the new
IRQ handling code strictly checks for the global
NR_IRQS to be respected also for these IRQs.
This patch will respect the interrupt mask passed
to the VIC driver and will prevent it from
attempting to call these functions on any unused
interrupts.
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The original arch/arm/include/asm/hardware/vic.h was
written for the PL190 ARM VIC implementation, and as
such does not have any information about the PL192
version.
Add details about the PL192 and PL190 specific registers
and any changes between the two units.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Patch from David Brownell
ARM genirq cleanups/updates:
- Start switching platforms to newer APIs
* use "irq_chip" name, not "irqchip"
* providing irq_chip.name
- Show irq_chip.name in /proc/interrupts, like on x86.
This update a bit more than half of the ARM code. The irq_chip.name
values were chosen to match docs (if I have them) or be otherwise
obvious ("FPGA", "CPLD", or matching the code).
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Some SoCs have multiple VIC devices. Adapt the generic vic code
to allow multiple implementations to be handled.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Rafael J. Wysocki