[PATCH v4 00/37] ARM: davinci: modernize the irq support

[Bartosz Golaszewski <brgl@bgdev.pl>]

From: Bartosz Golaszewski <bgolaszewski@baylibre.com>

This series ports the davinci platform to using SPARSE_IRQ, cleans up
the irqchip drivers and moves them over to drivers/irqchip.

The series can be logically split into five parts. The first patch
preemptively fixes a problem in an input driver that would have caused
problems later. Patches (2-9) aim at introducing support for SPARSE_IRQ.
They contain a couple changes required for that functionality and do some
cleanup at the end.

Third part (10-22) makes the aintc driver suitable for drivers/irqchip
and eventually moves it over there.

Part 4 (23-36) does the same for the cp-intc driver.

Last patch removes unnecessary code.

The series has been tested on da850-lcdk (for cp-intc) and
dm365-evm (for aintc).

v1 -> v2:
- made commit messages readable without reading the subject line first
- collected David's Reviewed-by tags for patches that haven been
  significantly modified since v1
- added handling of spurious interrupts in cp-intc
- added comments explaining the irq handlers (C versions translated from
  assembly)
- dropped the patches removing the hardware interrupt numbers from
  the priority tables
- don't remove irqs.h, make it a local header instead
- rearranged the patches in order not to remove the code added
  by earlier ones
- renamed d*_init_irqs to d*_init_irq to fit the name of the relevant
  callback in machine info struct
- fixed license identifiers where needed
- added comments to config structures for irqchip drivers
- fixed all off-by-one errors in resource sizes
- clarified the comments on the weird handling of IRQ_TINT1_TINT34 as level
  irq and added missing calls to irq_set_handler() to dm3* SoCs
- fixed one function that was missing a correct prefix in cp_intc
- return value variables should be called ret not rv
- added a patch converting calls to _raw_readl/writel() to their _relaxed
  counterparts
- fixed the commit message prefix in patches that belong to the irqchip
  subsystem

v2 -> v3:
- added a patch preventing a build problem in davinci_keyscan driver
- converted another usage of 'int rv' to 'int ret'
- don't use __raw_readl/writel() in new patches, but leave patches converting
  previous uses
- drop a stray newline in usb.c when removing irqs.h
- when unifying the error handling: use specific messages instead of WARN_ON()
- do the above for aintc as well
- add patches adding calls to request_mem_region() to both drivers

v3 -> v4:
- fixed a commit message in one of the "unify error reporting" patches
- entirely remove the level irq handler setting for dm* boards

Bartosz Golaszewski (37):
  input: davinci_keyscan: remove unnecessary includes
  ARM: davinci: remove intc_host_map from davinci_soc_info struct
  ARM: davinci: aintc: use irq domain
  ARM: davinci: select GENERIC_IRQ_MULTI_HANDLER
  ARM: davinci: remove davinci_intc_type
  ARM: davinci: pull davinci_intc_base into the respective intc drivers
  ARM: davinci: wrap HW interrupt numbers with a macro
  ARM: davinci: select SPARSE_IRQ
  ARM: davinci: make irqs.h a local header
  ARM: davinci: aintc: drop GPL license boilerplate
  ARM: davinci: aintc: wrap davinci_irq_init() with a helper
  ARM: davinci: aintc: use a common prefix for symbols in the driver
  ARM: davinci: aintc: drop the 00 prefix from register offsets
  ARM: davinci: aintc: use readl/writel_relaxed()
  irqchip: davinci-aintc: add a new config structure
  ARM: davinci: aintc: use the new irqchip config structure in dm* SoCs
  ARM: davinci: aintc: use the new config structure
  ARM: davinci: aintc: unify error handling
  ARM: davinci: aintc: request memory region before remapping it
  ARM: davinci: aintc: remove the timer-specific irq_set_handler()
  ARM: davinci: aintc: remove unnecessary includes
  irqchip: davinci-aintc: move the driver to drivers/irqchip
  ARM: davinci: cp-intc: remove cp_intc.h
  ARM: davinci: cp-intc: add a wrapper around cp_intc_init()
  irqchip: davinci-cp-intc: add a new config structure
  ARM: davinci: cp-intc: add the new config structures for da8xx SoCs
  ARM: davinci: cp-intc: use a common prefix for all symbols
  ARM: davinci: cp-intc: convert all hex numbers to lowercase
  ARM: davinci: cp-intc: use the new-style config structure
  ARM: davinci: cp-intc: request the memory region before remapping it
  ARM: davinci: cp-intc: improve coding style
  ARM: davinci: cp-intc: unify error handling
  ARM: davinci: cp-intc: use readl/writel_relaxed()
  ARM: davinci: cp-intc: drop GPL license boilerplate
  ARM: davinci: cp-intc: remove redundant comments
  irqchip: davinci-cp-intc: move the driver to drivers/irqchip
  ARM: davinci: remove intc related fields from davinci_soc_info

 arch/arm/Kconfig                              |   2 +
 arch/arm/mach-davinci/Kconfig                 |  19 +-
 arch/arm/mach-davinci/Makefile                |   3 -
 arch/arm/mach-davinci/asp.h                   |   8 +-
 arch/arm/mach-davinci/board-da830-evm.c       |   5 +-
 arch/arm/mach-davinci/board-da850-evm.c       |   5 +-
 arch/arm/mach-davinci/board-dm355-evm.c       |   2 +-
 arch/arm/mach-davinci/board-dm355-leopard.c   |   2 +-
 arch/arm/mach-davinci/board-dm365-evm.c       |   2 +-
 arch/arm/mach-davinci/board-dm644x-evm.c      |   8 +-
 arch/arm/mach-davinci/board-dm646x-evm.c      |   7 +-
 arch/arm/mach-davinci/board-mityomapl138.c    |   3 +-
 arch/arm/mach-davinci/board-neuros-osd2.c     |   2 +-
 arch/arm/mach-davinci/board-omapl138-hawk.c   |   3 +-
 arch/arm/mach-davinci/board-sffsdr.c          |   2 +-
 arch/arm/mach-davinci/common.c                |   3 -
 arch/arm/mach-davinci/cp_intc.c               | 215 ---------------
 arch/arm/mach-davinci/cp_intc.h               |  57 ----
 arch/arm/mach-davinci/da830.c                 | 128 ++-------
 arch/arm/mach-davinci/da850.c                 | 154 ++---------
 arch/arm/mach-davinci/davinci.h               |   4 +
 arch/arm/mach-davinci/devices-da8xx.c         | 147 +++++-----
 arch/arm/mach-davinci/devices.c               |  40 +--
 arch/arm/mach-davinci/dm355.c                 |  78 +++---
 arch/arm/mach-davinci/dm365.c                 | 102 ++++---
 arch/arm/mach-davinci/dm644x.c                |  68 +++--
 arch/arm/mach-davinci/dm646x.c                |  82 +++---
 arch/arm/mach-davinci/include/mach/common.h   |  14 +-
 arch/arm/mach-davinci/include/mach/da8xx.h    |   2 +
 .../mach-davinci/include/mach/entry-macro.S   |  39 ---
 arch/arm/mach-davinci/irq.c                   | 117 --------
 .../mach-davinci/{include/mach => }/irqs.h    |   4 -
 arch/arm/mach-davinci/usb-da8xx.c             |   9 +-
 arch/arm/mach-davinci/usb.c                   |  13 +-
 drivers/input/keyboard/davinci_keyscan.c      |   4 -
 drivers/irqchip/Kconfig                       |  10 +
 drivers/irqchip/Makefile                      |   2 +
 drivers/irqchip/irq-davinci-aintc.c           | 163 +++++++++++
 drivers/irqchip/irq-davinci-cp-intc.c         | 260 ++++++++++++++++++
 include/linux/irqchip/irq-davinci-aintc.h     |  27 ++
 include/linux/irqchip/irq-davinci-cp-intc.h   |  25 ++
 41 files changed, 880 insertions(+), 960 deletions(-)
 delete mode 100644 arch/arm/mach-davinci/cp_intc.c
 delete mode 100644 arch/arm/mach-davinci/cp_intc.h
 delete mode 100644 arch/arm/mach-davinci/include/mach/entry-macro.S
 delete mode 100644 arch/arm/mach-davinci/irq.c
 rename arch/arm/mach-davinci/{include/mach => }/irqs.h (98%)
 create mode 100644 drivers/irqchip/irq-davinci-aintc.c
 create mode 100644 drivers/irqchip/irq-davinci-cp-intc.c
 create mode 100644 include/linux/irqchip/irq-davinci-aintc.h
 create mode 100644 include/linux/irqchip/irq-davinci-cp-intc.h

-- 
2.20.1