This patch-set provides unified Atmel AIC (Advanced Interrupt Controller)
driver. Currently, there are two AIC drivers, AIC and AIC5.
Each driver consists of chip specific part (irq-atmel-aic.o or
irq-atmel-aic5.o) and shared code (irq-atmel-aic-common.o).
But consolidated AIC driver is just one file driver which supports both
IRQ chip systems.
How to handle two IRQ chips in one driver
-----------------------------------------
Structure aic_reg_offset is used for device configuration.
AIC5 IRQ chip uses SSR (Source Select Register) to select IRQ number.
On the other hand, AIC IRQ chip has simple register access.
To support both IRQ chips, aic_is_ssr_used() helper is used.
Patches
-------
1 ~ 5: fix IRQ priority issue, clean up RTC/RTT fixup code and etc.
6 ~ 19: create unified IRQ chip operation with aic_reg_offset data.
Target boards
-------------
Tested with two boards.
* Arietta G25 (SoC: AT91SAM9G25)
* Xplained board (SoC: SAMA5D3)
Number of driver files
----------------------
AIC: 3 (irq-atmel-aic.c, irq-atmel-aic-common.c and h)
AIC5: 3 (irq-atmel-aic5.c, irq-atmel-aic-common.c and h)
Consolidated AIC: 1 (irq-aic.c)
Code size
---------
AIC (irq-atmel-aic.o and irq-atmel-aic-common.o)
text data bss dec hex filename
5137 196 4 5337 14d9 drivers/irqchip/built-in.o
AIC5 (irq-atmel-aic5.o and irq-atmel-aic-common.o)
text data bss dec hex filename
5548 196 4 5748 1674 drivers/irqchip/built-in.o
Consolidated AIC (irq-aic.o)
text data bss dec hex filename
4841 196 8 5045 13b5 drivers/irqchip/built-in.o
Lines of code
-------------
AIC: 597
AIC5: 688
Consolidated AIC: 609
Milo Kim (19):
irqchip: atmel-aic: fix wrong bit operation for IRQ priority
irqchip: atmel-aic: clean up RTC interrupt code
irqchip: atmel-aic: clean up RTT interrupt code
irqchip: atmel-aic: replace magic numbers with named constant
irqchip: atmel-aic: use simple constant to get number of interrupts
per chip
irqchip: atmel-aic: introduce register data structure
irqchip: atmel-aic: make common IRQ domain translate function
irqchip: atmel-aic: add common mask and unmask functions
irqchip: atmel-aic: add common retrigger function
irqchip: atmel-aic: add common set_type function
irqchip: atmel-aic: add common PM IRQ chip operation
irqchip: atmel-aic: use EOI register data in aic_reg_data
irqchip: atmel-aic: clean up irq_chip_generic
irqchip: atmel-aic: add common HW init function
irqchip: atmel-aic: add common interrupt handler
irqchip: atmel-aic: get total number of IRQs from device node
irqchip: atmel-aic: use unified IRQ chip initialization function
irqchip: atmel-aic: use unified AIC driver
irqchip: atmel-aic: rename AIC driver and fix Kconfig
arch/arm/mach-at91/Kconfig | 2 +-
drivers/irqchip/Kconfig | 7 -
drivers/irqchip/Makefile | 3 +-
drivers/irqchip/irq-aic.c | 609 +++++++++++++++++++++++++++++++++
drivers/irqchip/irq-atmel-aic-common.c | 280 ---------------
drivers/irqchip/irq-atmel-aic-common.h | 41 ---
drivers/irqchip/irq-atmel-aic.c | 276 ---------------
drivers/irqchip/irq-atmel-aic5.c | 367 --------------------
8 files changed, 611 insertions(+), 974 deletions(-)
create mode 100644 drivers/irqchip/irq-aic.c
delete mode 100644 drivers/irqchip/irq-atmel-aic-common.c
delete mode 100644 drivers/irqchip/irq-atmel-aic-common.h
delete mode 100644 drivers/irqchip/irq-atmel-aic.c
delete mode 100644 drivers/irqchip/irq-atmel-aic5.c
--
2.6.4
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