Re: [PATCH v2 00/17] Divorcing irqdomain and device_node

[Hanjun Guo <hanjun.guo@linaro.org>]

On 10/13/2015 09:49 PM, Hanjun Guo wrote:
> On 10/13/2015 07:51 PM, Marc Zyngier wrote:
>> [This patch series used to be called "Making the generic ACPI GSI
>> layer irqdomain aware", but as I've radically changed my approach to
>> this problem, I've decided to reset the counters...]
>>
>> The irqdomain code is not entierely ACPI friendly, as it has some
>> built-in knowledge of the device-tree. Nothing too harmful, but enough
>> to scare the ARM ACPI developpers which end up with their own version
>> of the square wheel. And some of the ramifications actually run deeper
>> than initially expected.
>>
>> This series adapts the irqdomain code to use 'struct fwnode_handle'
>> instead of 'struct device_node' as the identifier for a domain
>> (compatibility interfaces are of course added). It also introduces a
>> generic IRQ specifier that firmware interfaces (DT or ACPI) can
>> directly use to configure interrupts, and allow the ACPI GSI code to
>> be plugged into this.
>>
>> As examples, we convert the ARM GIC ACPI support to use irqdomains as
>> originally intended, and rework the MSI code to also move away from
>> using device nodes when using irqdomains.
>>
>> Overall, this gives us a way to use irqdomains on both DT and ACPI
>> enabled platforms, having very little changes made to the actual
>> drivers (other than the probing infrastructure). Because we keep the
>> flow of information between the various layers identical between ACPI
>> and DT, we immediately benefit from the existing infrastructure.
>>
>> This has been test-booted on Juno, is based on 4.3-rc5 + tip/irq/core
>> (in order to avoid potential conflicts), and available at:
>>
>> git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git
>> irq/irq-domain-fwnode-v2
>>
>> * From v1:
>>    - Dropped irq_domain_get_of_node() from the first patch (merged into
>>    4.3-rc5)
>>    - Fixed a few missing accessors in the first patch
>>    - Added EXPORT_SYMBOL_GPL for irq_find_matching_fwnode
>>    - Added some documentation update
>>    - Added Acks from Rafael
>>    - Rebased on top of 4.3-rc5 + tip/irq/core
>>
>> Marc Zyngier (17):
>>    irqdomain: Use irq_domain_get_of_node() instead of direct field access
>>    irqdomain: Convert irqdomain->of_node to fwnode
>>    irqdomain: Allow irq domain lookup by fwnode
>>    irqdomain: Introduce a firmware-specific IRQ specifier structure
>>    irqchip: Convert all alloc/xlate users from of_node to fwnode
>>    irqdomain: Introduce irq_create_fwspec_mapping
>>    irqdomain: Introduce irq_domain_create_{linear,tree}
>>    irqdomain: Add a fwnode_handle allocator
>>    acpi/gsi: Always perform an irq domain lookup
>>    acpi/gsi: Add acpi_set_irq_model to initialize the GSI layer
>>    irqchip/gic: Get rid of gic_init_bases()
>>    irqchip/gic: Switch ACPI support to stacked domains
>>    irqchip/gic: Kill the xlate method
>>    acpi/gsi: Cleanup acpi_register_gsi
>>    irqdomain: Introduce irq_domain_create_hierarchy
>>    irqdomain/msi: Use fwnode instead of of_node
>>    irqdomain: Documentation updates
>
> For this patch series,
>
> Reviewed-by: Hanjun Guo <hanjun.guo@linaro.org>
>
> For patch 1 to patch14,

Oops, I mean patch 01/17 to patch 14/17,

>
> Tested-by: Hanjun Guo <hanjun.guo@linaro.org>

Thanks
Hanjun