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| author | Paul Mundt <lethal@linux-sh.org> | 2012-08-01 17:14:52 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2012-08-01 17:14:52 +0900 |
| commit | f38770477a30d03b6296570071ca2fcd6d3a5f11 (patch) | |
| tree | 3dd11460c4115d97137a6ff82683e593a3813607 /Documentation/IRQ-domain.txt | |
| parent | 1ca8fe38a6c958babe6571e39cb0115a40b94603 (diff) | |
| parent | 1d6a21b0a672fb29b01ccf397d478e0541e17716 (diff) | |
Merge branch 'common/irqdomain' into sh-latest
Diffstat (limited to 'Documentation/IRQ-domain.txt')
| -rw-r--r-- | Documentation/IRQ-domain.txt | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/IRQ-domain.txt b/Documentation/IRQ-domain.txt index 27dcaabfb4db..1401cece745a 100644 --- a/Documentation/IRQ-domain.txt +++ b/Documentation/IRQ-domain.txt @@ -93,6 +93,7 @@ Linux IRQ number into the hardware. Most drivers cannot use this mapping. ==== Legacy ==== +irq_domain_add_simple() irq_domain_add_legacy() irq_domain_add_legacy_isa() @@ -115,3 +116,7 @@ The legacy map should only be used if fixed IRQ mappings must be supported. For example, ISA controllers would use the legacy map for mapping Linux IRQs 0-15 so that existing ISA drivers get the correct IRQ numbers. + +Most users of legacy mappings should use irq_domain_add_simple() which +will use a legacy domain only if an IRQ range is supplied by the +system and will otherwise use a linear domain mapping. |