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  1. 28 Jul, 2011 3 commits
    • Grant Likely's avatar
      arm/versatile: Add device tree support · 3ba7222a
      Grant Likely authored 
      For testing the dt work, define a dt-enabled versatile platform.

This patch adds a new versatile platform for when using the device
tree.  Add platform and amba devices are discovered and registered by
parsing the device tree.  Clocks and initial io mappings are still
configured statically.

This patch still depends on some static platform_data for a few devices
which is passed via the auxdata structure to of_platform_populate(),
but it is a viable starting point until the drivers can get all
configuration data out of the device tree.
Signed-off-by: default avatarGrant Likely <grant.likely@secretlab.ca>
      3ba7222a
    • Grant Likely's avatar
      dt/irq: add irq_domain_generate_simple() helper · 7e713301
      Grant Likely authored 
      irq_domain_generate_simple() is an easy way to generate an irq translation
domain for simple irq controllers.  It assumes a flat 1:1 mapping from
hardware irq number to an offset of the first linux irq number assigned
to the controller
Signed-off-by: default avatarGrant Likely <grant.likely@secretlab.ca>
      7e713301
    • Grant Likely's avatar
      irq: add irq_domain translation infrastructure · 08a543ad
      Grant Likely authored 
      This patch adds irq_domain infrastructure for translating from
hardware irq numbers to linux irqs.  This is particularly important
for architectures adding device tree support because the current
implementation (excluding PowerPC and SPARC) cannot handle
translation for more than a single interrupt controller.  irq_domain
supports device tree translation for any number of interrupt
controllers.

This patch converts x86, Microblaze, ARM and MIPS to use irq_domain
for device tree irq translation.  x86 is untested beyond compiling it,
irq_domain is enabled for MIPS and Microblaze, but the old behaviour is
preserved until the core code is modified to actually register an
irq_domain yet.  On ARM it works and is required for much of the new
ARM device tree board support.

PowerPC has /not/ been converted to use this new infrastructure.  It
is still missing some features before it can replace the virq
infrastructure already in powerpc (see documentation on
irq_domain_map/unmap for details).  Followup patches will add the
missing pieces and migrate PowerPC to use irq_domain.

SPARC has its own method of managing interrupts from the device tree
and is unaffected by this change.
Acked-by: default avatarRalf Baechle <ralf@linux-mips.org>
Signed-off-by: default avatarGrant Likely <grant.likely@secretlab.ca>
      08a543ad
  3. 25 Jul, 2011 3 commits
  5. 24 Jul, 2011 34 commits
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