[PATCH v3 0/9] refactoring for mask_cache

[Simon Guinot]

On Mon, Mar 18, 2013 at 03:00:46PM +0100, Gerlando Falauto wrote:
> Hi everyone,
> here is a patchset to address the issue found with Orion, in incremental
> stages as Thomas suggested.
> a) we introduce the new fields and pointer (though only the shared one is used)
> b) we convert all drivers to use it 
> c) we rename the field so to force the use of the per-ct pointer
> d) we add per-ct mask cache, provided the new flag 
>    IRQ_GC_SEPARATE_MASK_REGISTERS is enabled
> e) we enable the flag for orion-gpio and mvebu drivers
> 
> So even though I'm also providing changes for mvebu, I only
> tested the patch on a 3.0.40 kernel with the plat-orion/gpio.c driver.
> We currently do not have a working 3.6+ configuration for our Kirkwood
> boards (3.6 is apparently where this mvebu gpio driver was introduced),
> so I would be glad if someone could give it a try.
> I also have no idea whether the three Marvell variants all have separate
> mask registers (which is what the last patch assumes).

Accordingly to MV78230/78x60 (Armada-XP) functional specification, we
have separate mask registers for the GPIO level and edge interrupts.

I believe that the GPIO mask register is only shared on Orion and
Kirkwood based SoCs.

Regards,

Simon

> 
> Gerlando Falauto (9):
>   genirq: cosmetic: remove cur_regs
>   genirq: add mask_cache and pmask_cache into struct irq_chip_type
>   gpio: mvebu: convert to usage of *pmask_cache within irq_chip_type
>   MIPS: JZ4740: convert to usage of *pmask_cache within irq_chip_type
>   ARM: SAMSUNG: convert to usage of *pmask_cache within irq_chip_type
>   genirq: rename mask_cache to shared_mask_cache
>   genirq: handle separate mask registers
>   orion-gpio: enable IRQ_GC_SEPARATE_MASK_REGISTERS
>   gpio: mvebu: enable IRQ_GC_SEPARATE_MASK_REGISTERS
> 
>  arch/arm/plat-orion/gpio.c            |    3 +-
>  arch/arm/plat-samsung/irq-vic-timer.c |    6 ++--
>  arch/mips/jz4740/irq.c                |    3 +-
>  drivers/gpio/gpio-mvebu.c             |   23 ++++++++------
>  include/linux/irq.h                   |    9 ++++--
>  kernel/irq/generic-chip.c             |   55 +++++++++++++++++++++------------
>  6 files changed, 64 insertions(+), 35 deletions(-)
> 
> -- 
> 1.7.10.1
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