Create Documentation portion of UIO driver with Generic Interrupt Handler.
This patch creates a dt-binding documentation portion of the UIO Driver.
In addition to definition of standard required properties, new optional
property defined:
- no-threaded-irq: when present, request_irq() is called with
IRQF_NO_THREAD flag set, effectively skipping threaded interrupt
handler and taking bottom-half into irq_handler
Signed-off-by: Andrey Zhizhikin <andrey.z@xxxxxxxxx>
diff --git a/Documentation/devicetree/bindings/uio/uio-pdrv-genirq.txt b/Documentation/devicetree/bindings/uio/uio-pdrv-genirq.txt
new file mode 100644
index 0000000..dfcc362
--- /dev/null
+++ b/Documentation/devicetree/bindings/uio/uio-pdrv-genirq.txt
@@ -0,0 +1,46 @@
+* Userspace I/O platform driver with generic IRQ handling code.
+
+Platform driver for User-space IO handling with generic IRQ code.
+This driver is very similar to the regular UIO platform driver, but is
+only suitable for devices that are connected to the interrupt
+controller using unique interrupt lines.
+
+Required properties:
+- compatible: Driver compatible string. For UIO device with generic IRQ
+ handling code this property is defined in device tree to any desired
+ name, and then set via module parameters passed to Kernel command line
+ in a form:
+ uio_pdrv_genirq.of_id=<your name>
+
+- reg: Physical base address and size for memory mapped region to be accessed
+ via UIO driver.
+
+- interrupts: Platform IRQ standard definition. For details on defining this
+ property, see interrupt-controller/interrupts.txt
+
+- interrupt-parent: Parent interrupt controller node.
+ For details, see interrupt-controller/interrupts.txt
+
+Optional properties:
+- no-threaded-irq: when present, request_irq() is called with IRQF_NO_THREAD
+ flag set, effectively skipping threaded interrupt handler and taking
+ bottom-half into irq_handler
+
+
+Examples:
+
+base-uio {
+ compatible = "platform-uio";
+ reg = < 0xC0000000 0x00020000 >;
+ interrupts = < 0 10 1 >;
+ interrupt-parent = <&intc>;
+};
+
+nothreaded-uio {
+ compatible = "platform-uio";
+ reg = < 0xC0040000 0x00020000 >;
+ interrupts = < 0 27 1 >;
+ interrupt-parent = <&intc>;
+ no-threaded-irq;
+};
+
--
2.7.4
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
