[PATCH v5 0/7] irqchip/renesas-rzv2h: Add support to handle ICU error IRQ and add SWPE trigger

[Prabhakar]

From: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>

Hi All,

This patch series aims to enhance the Renesas RZ/V2H ICU irqchip driver by
adding support to handle ICU error IRQs and introducing a software
generated interrupts using SWPE and SWINT. The series includes the
following changes:
1. Use local node pointer
2. Use local device pointer in ICU probe
3. Switch to using dev_err_probe()
4. Make IRQ type handling range-aware
5. Add CA55 software interrupt support
6. Handle ICU error IRQ and add SWPE trigger

v4->v5:
- Rebased the changes on top of next-20260303
- Dropped scoped_guard arround single writel
- Used scoped_guard in rzv2h_irq_set_type/rzv2h_tint_set_type to ensure
  irq_chip_set_type_parent() is called without locking
- Dropped gaurd from rzv2h_icu_swint_set_irqchip_state() and
  rzv2h_icu_swpe_set_irqchip_state() as we just did a single writel

v3->v4:
- Made a separate irq chip for tint/irq/nmi.
- Added new patch for tint validation in irq allocation.
- Made a separate irq chip for CA55 SWINT.
- Made a separate irq chip for CA55 SWPE.

v2->v3:
- Updated the check in rzv2h_icu_alloc() to ensure hwirq is within the
  TINT range when extracting TINT information in patch 4/6.
- Replaced pr_debug with pr_info in the SWINT handler in patch 5/6
  and 6/6 to ensure  visibility of the message.

v1->v2:
- No changes for patches 1-3.
- Patch 4 is a new patch.
- Patch 5
  - Made CA55 SW interrupt as part of ICU IRQ domain.
  - Implemented rzv2h_icu_irq_set_irqchip_state() to trigger SWINT.
  - Updated commit message accordingly.
- Patch 6
  - Made Error interrupt as part of ICU IRQ domain.
  - Updated rzv2h_icu_irq_set_irqchip_state() to trigger pseudo interrupt.
  - Updated commit message accordingly.

Cheers,
Prabhakar

Lad Prabhakar (7):
  irqchip/renesas-rzv2h: Use local node pointer
  irqchip/renesas-rzv2h: Use local device pointer in ICU probe
  irqchip/renesas-rzv2h: Switch to using dev_err_probe()
  irqchip/renesas-rzv2h: Clarify IRQ range definitions and tighten TINT
    validation
  irqchip/renesas-rzv2h: Replace single irq_chip with per-region
    irq_chip instances
  irqchip/renesas-rzv2h: Add CA55 software interrupt support
  irqchip/renesas-rzv2h: Handle ICU error IRQ and add SWPE trigger

 drivers/irqchip/irq-renesas-rzv2h.c | 474 ++++++++++++++++++++++------
 1 file changed, 376 insertions(+), 98 deletions(-)

-- 
2.53.0