Thomas Abraham wrote: > > Changes since v1: > - Dropped device tree support for interrupt combiner controller from this patchset. > Some rework in the interrupt combiner controller code is required to address > the irq domain related comments from Grant Likely and hence those changes will > be in another patchset. > - As suggested by Grant Likely, linux virq number 0 is left unused. > > This patchset adds device tree support for GIC controller in Exynos4 SoC. > > Patch 1 moves the statically mapped timer irqs 11 to 15 to the end of the > statically mapped linux irq space for Exynos4 platforms. > > For Exynos4 platforms, the five hardware timer irqs are connected to GIC > at some hardware irq number (in exynos it is GIC_ID 69 to 73 for five timers). > When any of these hardware interrupt occurs, its interrupt handler calls > generic_handle_irq() with linux irq number 11/12/13/14/15 for timer 0/1/2/3/4 > as the parameter. The code that needs to be notified about the timer interrupts > would have already registered its handler for either of the interrupts 11 to 15. > > Instead of using linux irq number 11 to 15 to which consumers of timer interrupt > attach their handler, this interrupt range is moved to the end of linux irq > space used. So there will be no interrupts statically mapped between 0 to 31. > > The GIC hardware interrupts, which were previously statically mapped to > start from linux irq 32 are now moved to start from linux irq 0. In case of > exynos, GIC_ID[0] (which is SGI[0]) which was previously at linux irq 32, will > not be at linux irq 0. This was required to use Rob Herring's GIC OF bindings > patches for Exynos4. > > Patch 2 adds a interceptor for all ioremap calls targeted towards any of the > statically remapped memory region. This was required because the GIC OF > binding's patchset ioremaps the GIC memory-mapped regions in the gic_of_init() > function. Without this patch, there would be two separate remap for GIC > controller, one statically remapped and the other dynamically remapped by the > gic_of_init() function. The patch will eventually be superseded by Nicolas > Pitre's vmalloc patch series. > > Patch 3 adds device tree support for GIC controllers on Exynos4. For GIC > controller, this patch is based on Rob Herring's, > "[PATCH 0/3] GIC OF bindings" patchset. > > This patchset is based on the following tree: > git://git.linaro.org/git/people/arnd/arm-soc.git branch: for-next > > Thomas Abraham (3): > ARM: Exynos4: Move timer irq numbers to end of linux irq space > ARM: Exynos4: Add ioremap interceptor for statically remapped regions > ARM: Exynos4: Enable conversion of GIC dt irq specifier to linux virq > > arch/arm/mach-exynos4/cpu.c | 33 > +++++++++++++++++++++- > arch/arm/mach-exynos4/include/mach/entry-macro.S | 1 - > arch/arm/mach-exynos4/include/mach/io.h | 5 +++ > arch/arm/mach-exynos4/include/mach/irqs.h | 8 +++-- > arch/arm/mach-s5p64x0/include/mach/irqs.h | 2 + > arch/arm/mach-s5pc100/include/mach/irqs.h | 2 + > arch/arm/mach-s5pv210/include/mach/irqs.h | 2 + > arch/arm/plat-samsung/include/plat/irqs.h | 3 +- > 8 files changed, 50 insertions(+), 6 deletions(-) Looks ok to me, I replaced previous patches with this series. Thanks. Best regards, Kgene. -- Kukjin Kim <kgene.kim@xxxxxxxxxxx>, Senior Engineer, SW Solution Development Team, Samsung Electronics Co., Ltd. -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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