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IRQCHIP: bcm7120-l2: Split STB-specific logic into its own function

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The BCM7xxx instances of this block (listed in the register manual as
simply "IRQ0") all have the following items in common:

 - brcm,int-map-mask: for routing different bits in the L2 to different
   parent IRQs

 - brcm,int-fwd-mask: for hardwiring certain IRQs to bypass the L2 and
   use dedicated L1 lines

 - one enable/status pair (32 bits only)

Much of the driver code can be shared with BCM3380-style controllers, but
in order to do this cleanly, let's split out the BCM7xxx-specific logic
first.

Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Cc: f.fainelli@gmail.com
Cc: jaedon.shin@gmail.com
Cc: abrestic@chromium.org
Cc: tglx@linutronix.de
Cc: jason@lakedaemon.net
Cc: jogo@openwrt.org
Cc: arnd@arndb.de
Cc: computersforpeace@gmail.com
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/8842/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Kevin Cernekee
2014-12-25 09:49:04 -08:00
committed by Ralf Baechle
parent 5b5468cf1f
commit ca40f1b23d
2 changed files with 71 additions and 64 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
Documentation/devicetree/bindings/interrupt-controller/brcm,bcm7120-l2-intc.txt
View File

@@ -13,8 +13,7 @@ Such an interrupt controller has the following hardware design:
or if they will output an interrupt signal at this 2nd level interrupt
controller, in particular for UARTs
- typically has one 32-bit enable word and one 32-bit status word, but on
some hardware may have more than one enable/status pair
- has one 32-bit enable word and one 32-bit status word
- no atomic set/clear operations
@@ -53,9 +52,7 @@ The typical hardware layout for this controller is represented below:
Required properties:
- compatible: should be "brcm,bcm7120-l2-intc"
- reg: specifies the base physical address and size of the registers;
multiple pairs may be specified, with the first pair handling IRQ offsets
0..31 and the second pair handling 32..63
- reg: specifies the base physical address and size of the registers
- interrupt-controller: identifies the node as an interrupt controller
- #interrupt-cells: specifies the number of cells needed to encode an interrupt
source, should be 1.
@@ -66,10 +63,7 @@ Required properties:
- brcm,int-map-mask: 32-bits bit mask describing how many and which interrupts
are wired to this 2nd level interrupt controller, and how they match their
respective interrupt parents. Should match exactly the number of interrupts
specified in the 'interrupts' property, multiplied by the number of
enable/status register pairs implemented by this controller. For
multiple parent IRQs with multiple enable/status words, this looks like:
<irq0_w0 irq0_w1 irq1_w0 irq1_w1 ...>
specified in the 'interrupts' property.
Optional properties: