gpio: msm: Add device tree and irqdomain support for gpio-msm-v2

This cleans up the gpio-msm-v2 driver of all the global define usage.
The number of gpios are now defined in the device tree. This enables
adding irqdomain support as well.

Signed-off-by: Rohit Vaswani <rvaswani@codeaurora.org>
Acked-by: Grant Likely <grant.likely@linaro.org>
Signed-off-by: David Brown <davidb@codeaurora.org>

1 files changed, 26 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/gpio/gpio-msm.txt b/Documentation/devicetree/bindings/gpio/gpio-msm.txt
new file mode 100644
index 000000000000..ac20e68a004e
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/gpio-msm.txt
@@ -0,0 +1,26 @@
+MSM GPIO controller bindings
+
+Required properties:
+- compatible:
+  - "qcom,msm-gpio" for MSM controllers
+- #gpio-cells : Should be two.
+  - first cell is the pin number
+  - second cell is used to specify optional parameters (unused)
+- gpio-controller : Marks the device node as a GPIO controller.
+- #interrupt-cells : Should be 2.
+- interrupt-controller: Mark the device node as an interrupt controller
+- interrupts : Specify the TLMM summary interrupt number
+- ngpio : Specify the number of MSM GPIOs
+
+Example:
+
+        msmgpio: gpio@fd510000 {
+                compatible = "qcom,msm-gpio";
+                gpio-controller;
+                #gpio-cells = <2>;
+                interrupt-controller;
+                #interrupt-cells = <2>;
+                reg = <0xfd510000 0x4000>;
+                interrupts = <0 208 0>;
+                ngpio = <150>;
+        };