linux-toradex.git/arch/arc/kernel/irq.c, branch v4.4.26 Linux kernel for Apalis and Colibri modules ARC: smp: Rename platform hook @init_cpu_smp -> @init_per_cpu 2015-12-17T07:26:56+00:00 Vineet Gupta vgupta@synopsys.com 2015-12-17T06:52:21+00:00 575a9d4e2c09675c05db2bc781c5c33153ce932f Makes it similar to smp_ops which also has callback with same name Signed-off-by: Vineet Gupta <vgupta@synopsys.com> 
Makes it similar to smp_ops which also has callback with same name

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
ARC: rename smp operation init_irq_cpu() to init_per_cpu() 2015-12-17T07:26:43+00:00 Noam Camus noamc@ezchip.com 2015-12-16T01:10:27+00:00 b474a02382b75f4a75c4e94eb9847aad28dd4a37 This will better reflect its description i.e. "any needed setup..." and not just do an "IPI request". Signed-off-by: Noam Camus <noamc@ezchip.com> Acked-by: Vineet Gupta <vgupta@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com> 
This will better reflect its description i.e. "any needed setup..."
and not just do an "IPI request".

Signed-off-by: Noam Camus <noamc@ezchip.com>
Acked-by: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
ARC: intc: Document arc_request_percpu_irq() better 2015-12-12T10:34:12+00:00 Vineet Gupta vgupta@synopsys.com 2015-12-11T14:01:23+00:00 c512c6ba7ac41b8bc196f17a85ee52099a109146 Signed-off-by: Vineet Gupta <vgupta@synopsys.com> 
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
ARC: intc: No need to clear IRQ_NOAUTOEN 2015-12-12T10:33:59+00:00 Vineet Gupta vgupta@synopsys.com 2015-12-11T10:46:11+00:00 5bf704c204440b1e90251382ee07a2dc5e4960ec arc_request_percpu_irq() is called by all cores to request/enable percpu irq. It has some "prep" calls needed by genirq: - setup percpu devid - disable IRQ_NOAUTOEN However given that enable_percpu_irq() is called enayways, latter can be avoided. We are now left with irq_set_percpu_devid() quirk and that too for ARCompact builds only, since previous patch updated ARCv2 intc to do this in the "right" place, i.e. irq map function. By next release, this will ultimately be fixed for ARCompact as well. Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Alexey Brodkin <abrodkin@synopsys.com> Cc: linux-snps-arc@lists.infradead.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Vineet Gupta <vgupta@synopsys.com> 
arc_request_percpu_irq() is called by all cores to request/enable percpu
irq. It has some "prep" calls needed by genirq:
 - setup percpu devid
 - disable IRQ_NOAUTOEN

However given that enable_percpu_irq() is called enayways, latter can be
avoided.

We are now left with irq_set_percpu_devid() quirk and that too for
ARCompact builds only, since previous patch updated ARCv2 intc to do this
in the "right" place, i.e. irq map function.

By next release, this will ultimately be fixed for ARCompact as well.

Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Alexey Brodkin <abrodkin@synopsys.com>
Cc: linux-snps-arc@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
ARC: smp: Introduce smp hook @init_irq_cpu called for all cores 2015-10-28T10:43:41+00:00 Vineet Gupta vgupta@synopsys.com 2015-10-14T09:08:02+00:00 286130ebf196d9643800977d57bdb7cda266b49e Note this is not part of platform owned static machine_desc, but more of device owned plat_smp_ops (rather misnamed) which a IPI provider or some such typically defines. This will help us seperate out the IPI registration from platform specific init_cpu_smp() into device specific init_irq_cpu() Signed-off-by: Vineet Gupta <vgupta@synopsys.com> 
Note this is not part of platform owned static machine_desc,
but more of device owned plat_smp_ops (rather misnamed) which a IPI
provider or some such typically defines.

This will help us seperate out the IPI registration from platform
specific init_cpu_smp() into device specific init_irq_cpu()

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
ARC: smp: Rename platform hook @init_smp -> @init_cpu_smp 2015-10-28T10:43:40+00:00 Vineet Gupta vgupta@synopsys.com 2015-10-13T09:56:00+00:00 8721a7f5a6f95c38cacbe1be22c820a7698926ef This conveys better that it is called for each cpu Signed-off-by: Vineet Gupta <vgupta@synopsys.com> 
This conveys better that it is called for each cpu

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
ARC: remove @init_time, @init_irq platform callbacks 2015-10-28T10:43:39+00:00 Vineet Gupta vgupta@synopsys.com 2015-10-13T03:18:54+00:00 4c82f28617ab9ce938118f0b99156a96c64d3da0 These are not in use for ARC platforms. Moreover DT mechanims exist to probe them w/o explicit platform calls. - clocksource drivers can use CLOCKSOURCE_OF_DECLARE() - intc IRQCHIP_DECLARE() calls + cascading inside DT allows external intc to be probed automatically Signed-off-by: Vineet Gupta <vgupta@synopsys.com> 
These are not in use for ARC platforms. Moreover DT mechanims exist to
probe them w/o explicit platform calls.

 - clocksource drivers can use CLOCKSOURCE_OF_DECLARE()
 - intc IRQCHIP_DECLARE() calls + cascading inside DT allows external
   intc to be probed automatically

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
ARC: intc: split into ARCompact ISA specific, common bits 2015-06-19T12:39:40+00:00 Vineet Gupta vgupta@synopsys.com 2015-03-05T13:43:56+00:00 5793e273a134331d05ed904e5be3b31ccfca54c1 Signed-off-by: Vineet Gupta <vgupta@synopsys.com> 
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
ARC: [intc] mask/unmask can be hidden again 2014-07-23T05:52:02+00:00 Vineet Gupta vgupta@synopsys.com 2014-06-25T11:55:46+00:00 590892deb650fa152698f0a2f4eba44789e51c38 Signed-off-by: Vineet Gupta <vgupta@synopsys.com> 
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
ARC: [intc] don't mask all IRQ by default 2014-07-23T05:47:55+00:00 Vineet Gupta vgupta@synopsys.com 2014-06-25T11:46:04+00:00 878f46c71e99cfb6d8e4e15a561db63a3c9601e5 Hardware keeps them enabled on reset, and Linux needs to keep status quo. Any spurious interrupts will be reported/blocked by genirq. This helps remove a SMP IRQ quirk (next commit), where a peripheral IRQ is hard wired to core0, and request_irq()->unmask() happens on core1, keeping the IRQ masked on core0, needing an explicit unmask. Signed-off-by: Vineet Gupta <vgupta@synopsys.com> 
Hardware keeps them enabled on reset, and Linux needs to keep status quo.
Any spurious interrupts will be reported/blocked by genirq.

This helps remove a SMP IRQ quirk (next commit), where a peripheral IRQ
is hard wired to core0, and request_irq()->unmask() happens on core1,
keeping the IRQ masked on core0, needing an explicit unmask.

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>