3 Commits

Author	SHA1	Message	Date
Linus Walleij	023bba3638	irqdomain: update documentation ... This updates the IRQdomain documentation a bit, by adding a more verbose explanation to why we need this, and by adding some extended documentation of the irq_domain_simple() usecase. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>	2012-12-05 23:52:10 +00:00
Mark Brown	781d0f46d8	irq_domain: Standardise legacy/linear domain selection ... A large proportion of interrupt controllers that support legacy mappings do so because non-DT systems need to use fixed IRQ numbers when registering devices via buses but can otherwise use a linear mapping. The interrupt controller itself typically is not affected by the mapping used and best practice is to use a linear mapping where possible so drivers frequently select at runtime depending on if a legacy range has been allocated to them. Standardise this behaviour by providing irq_domain_register_simple() which will allocate a linear mapping unless a positive first_irq is provided in which case it will fall back to a legacy mapping. This helps make best practice for irq_domain adoption clearer. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>	2012-07-11 14:59:17 +01:00
Grant Likely	7ab3a837ad	irq_domain: add documentation and MAINTAINERS entry. ... Documentation for irq_domain library which will be created in subsequent patches. v4: editorial changes Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Reviewed-by: Randy Dunlap <rdunlap@xenotime.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Rob Herring <rob.herring@calxeda.com> Cc: Milton Miller <miltonm@bga.com> Tested-by: Olof Johansson <olof@lixom.net>	2012-02-14 14:06:47 -07:00