Merge tag 'ux500-dma40-for-arm-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-stericsson into next/drivers

From Linus Walleij:
This is a set of patches from Lee Jones to start converting
the ux500 to fetch DMA channels from the device tree:
- Full DT support and channel mapping in the DMA40 driver
- Dropping of platform data for migrated devices on the DT
  boot path.

* tag 'ux500-dma40-for-arm-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-stericsson: (36 commits)
  ARM: ux500: Register Cryp and Hash platform drivers on Snowball
  crypto: ux500/[cryp|hash] - Show successful start-up in the bootlog
  ARM: ux500: Stop passing Cryp DMA channel config information though pdata
  crypto: ux500/cryp - Set DMA configuration though dma_slave_config()
  crypto: ux500/cryp - Prepare clock before enabling it
  ARM: ux500: Stop passing Hash DMA channel config information though pdata
  crypto: ux500/hash - Set DMA configuration though dma_slave_config()
  crypto: ux500/hash - Prepare clock before enabling it
  ARM: ux500: Remove unnecessary attributes from DMA channel request pdata
  dmaengine: ste_dma40: Correct copy/paste error
  ARM: ux500: Remove DMA address look-up table
  dmaengine: ste_dma40: Remove redundant address fetching function
  dmaengine: ste_dma40: Only use addresses passed as configuration information
  ARM: ux500: Stop passing UART's platform data for Device Tree boots
  dmaengine: ste_dma40: Don't configure runtime configurable setup during allocate
  dmaengine: ste_dma40: Remove unnecessary call to d40_phy_cfg()
  dmaengine: ste_dma40: Separate Logical Global Interrupt Mask (GIM) unmasking
  ARM: ux500: Pass remnant platform data though to DMA40 driver
  dmaengine: ste_dma40: Supply full Device Tree parsing support
  dmaengine: ste_dma40: Allow driver to be probe()able when DT is enabled
  ...

Signed-off-by: Olof Johansson <olof@lixom.net>

1 files changed, 62 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/dma/ste-dma40.txt b/Documentation/devicetree/bindings/dma/ste-dma40.txt
new file mode 100644
index 000000000000..2679a873522d
--- /dev/null
+++ b/Documentation/devicetree/bindings/dma/ste-dma40.txt
@@ -0,0 +1,62 @@
+* DMA40 DMA Controller
+
+Required properties:
+- compatible: "stericsson,dma40"
+- reg: Address range of the DMAC registers
+- reg-names: Names of the above areas to use during resource look-up
+- interrupt: Should contain the DMAC interrupt number
+- #dma-cells: must be <3>
+
+Optional properties:
+- dma-channels: Number of channels supported by hardware - if not present
+		the driver will attempt to obtain the information from H/W
+
+Example:
+
+	dma: dma-controller@801C0000 {
+		compatible = "stericsson,db8500-dma40", "stericsson,dma40";
+		reg = <0x801C0000 0x1000  0x40010000 0x800>;
+		reg-names = "base", "lcpa";
+		interrupt-parent = <&intc>;
+		interrupts = <0 25 0x4>;
+
+		#dma-cells = <2>;
+		dma-channels = <8>;
+	};
+
+Clients
+Required properties:
+- dmas: Comma separated list of dma channel requests
+- dma-names: Names of the aforementioned requested channels
+
+Each dmas request consists of 4 cells:
+  1. A phandle pointing to the DMA controller
+  2. Device Type
+  3. The DMA request line number (only when 'use fixed channel' is set)
+  4. A 32bit mask specifying; mode, direction and endianess [NB: This list will grow]
+        0x00000001: Mode:
+                Logical channel when unset
+                Physical channel when set
+        0x00000002: Direction:
+                Memory to Device when unset
+                Device to Memory when set
+        0x00000004: Endianess:
+                Little endian when unset
+                Big endian when set
+        0x00000008: Use fixed channel:
+                Use automatic channel selection when unset
+                Use DMA request line number when set
+
+Example:
+
+	uart@80120000 {
+		compatible = "arm,pl011", "arm,primecell";
+		reg = <0x80120000 0x1000>;
+		interrupts = <0 11 0x4>;
+
+		dmas = <&dma 13 0 0x2>, /* Logical - DevToMem */
+		       <&dma 13 0 0x0>; /* Logical - MemToDev */
+		dma-names = "rx", "rx";
+
+		status = "disabled";
+	};