Hi,
Today in the current of implementation we populate all the ressources
at of_platform_populate time. But this leed to a chicken-egg dilemat
some the irq present in DT are from platform_device too. And you can
not resolve them as of_platform_populate. So delay the populate of irq
at platform_drv_probe.
And if the irq_domain is not yet present just defer the probe (GPIO as
example)
we still have one issue is that the gpio irq provide by DT need to have
the gpio requested and configured which I'll fix later by handling this
automatically
by a gpio_irq_chip and dorp this from every drivers
The following changes since commit e4aa937ec75df0eea0bee03bffa3303ad36c986b:
Linux 3.10-rc3 (2013-05-26 16:00:47 -0700)
are available in the git repository at:
git://github.com/at91linux/linux-at91.git j/for-3.11-platform_irq_resolve
for you to fetch changes up to 898eab5ad414bfc48dd1160369965a677f135d26:
IRQ: irq domain: defer of irq ressoure resolve at platform_drv_probe
(2013-05-28 05:58:31 +0800)
----------------------------------------------------------------
Jean-Christophe PLAGNIOL-VILLARD (3):
of: irq: rename of_irq_count to of_irq_valid_count
of: add of_irq_count: Count the number of IRQs a node present
IRQ: irq domain: defer of irq ressoure resolve at platform_drv_probe
arch/mips/lantiq/irq.c | 2 +-
arch/powerpc/sysdev/ppc4xx_msi.c | 2 +-
drivers/base/platform.c | 5 +++++
drivers/clocksource/exynos_mct.c | 2 +-
drivers/gpio/gpio-mvebu.c | 2 +-
drivers/irqchip/irq-vt8500.c | 4 ++--
drivers/of/irq.c | 15 +++++++++++++++
drivers/of/platform.c | 27 ++++++++++++++++++++++++++-
include/linux/of_irq.h | 1 +
include/linux/of_platform.h | 7 +++++++
10 files changed, 60 insertions(+), 7 deletions(-)
Best Regards,
J.
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