Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma

Pull slave-dma updates from Vinod Koul:
 - new driver for BCM2835 used in R-pi
 - new driver for MOXA ART
 - dma_get_any_slave_channel API for DT based systems
 - minor fixes and updates spread acrooss driver

[ The fsl-ssi dual fifo mode support addition clashed badly with the
  other changes to fsl-ssi that came in through the sound merge.  I did
  a very rough cut at fixing up the conflict, but Nicolin Chen (author
  of both sides) will need to verify and check things ]

* 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma: (36 commits)
  dmaengine: mmp_pdma: fix mismerge
  dma: pl08x: Export pl08x_filter_id
  acpi-dma: align documentation with kernel-doc format
  dma: fix vchan_cookie_complete() debug print
  DMA: dmatest: extend the "device" module parameter to 32 characters
  drivers/dma: fix error return code
  dma: omap: Set debug level to debugging messages
  dmaengine: fix kernel-doc style typos for few comments
  dma: tegra: add support for Tegra148/124
  dma: dw: use %pad instead of casting dma_addr_t
  dma: dw: join split up messages
  dma: dw: fix style of multiline comment
  dmaengine: k3dma: fix sparse warnings
  dma: pl330: Use dma_get_slave_channel() in the of xlate callback
  dma: pl330: Differentiate between submitted and issued descriptors
  dmaengine: sirf: Add device_slave_caps interface
  DMA: Freescale: change BWC from 256 bytes to 1024 bytes
  dmaengine: Add MOXA ART DMA engine driver
  dmaengine: Add DMA_PRIVATE to BCM2835 driver
  dma: imx-sdma: Assign a default script number for ROM firmware cases
  ...

3 files changed, 103 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/dma/bcm2835-dma.txt b/Documentation/devicetree/bindings/dma/bcm2835-dma.txt
new file mode 100644
index 000000000000..1396078d15ac
--- /dev/null
+++ b/Documentation/devicetree/bindings/dma/bcm2835-dma.txt
@@ -0,0 +1,57 @@
+* BCM2835 DMA controller
+
+The BCM2835 DMA controller has 16 channels in total.
+Only the lower 13 channels have an associated IRQ.
+Some arbitrary channels are used by the firmware
+(1,3,6,7 in the current firmware version).
+The channels 0,2 and 3 have special functionality
+and should not be used by the driver.
+
+Required properties:
+- compatible: Should be "brcm,bcm2835-dma".
+- reg: Should contain DMA registers location and length.
+- interrupts: Should contain the DMA interrupts associated
+                to the DMA channels in ascending order.
+- #dma-cells: Must be <1>, the cell in the dmas property of the
+                client device represents the DREQ number.
+- brcm,dma-channel-mask: Bit mask representing the channels
+                         not used by the firmware in ascending order,
+                         i.e. first channel corresponds to LSB.
+
+Example:
+
+dma: dma@7e007000 {
+        compatible = "brcm,bcm2835-dma";
+        reg = <0x7e007000 0xf00>;
+        interrupts = <1 16>,
+                     <1 17>,
+                     <1 18>,
+                     <1 19>,
+                     <1 20>,
+                     <1 21>,
+                     <1 22>,
+                     <1 23>,
+                     <1 24>,
+                     <1 25>,
+                     <1 26>,
+                     <1 27>,
+                     <1 28>;
+
+        #dma-cells = <1>;
+        brcm,dma-channel-mask = <0x7f35>;
+};
+
+DMA clients connected to the BCM2835 DMA controller must use the format
+described in the dma.txt file, using a two-cell specifier for each channel.
+
+Example:
+
+bcm2835_i2s: i2s@7e203000 {
+        compatible = "brcm,bcm2835-i2s";
+        reg = < 0x7e203000 0x20>,
+              < 0x7e101098 0x02>;
+
+        dmas = <&dma 2>,
+               <&dma 3>;
+        dma-names = "tx", "rx";
+};
diff --git a/Documentation/devicetree/bindings/dma/fsl-imx-sdma.txt b/Documentation/devicetree/bindings/dma/fsl-imx-sdma.txt
index 4fa814d38321..68b83ecc3850 100644
--- a/Documentation/devicetree/bindings/dma/fsl-imx-sdma.txt
+++ b/Documentation/devicetree/bindings/dma/fsl-imx-sdma.txt
@@ -42,6 +42,7 @@ The full ID of peripheral types can be found below.
         19      IPU Memory
         20      ASRC
         21      ESAI
+        22      SSI Dual FIFO   (needs firmware ver >= 2)
 
 The third cell specifies the transfer priority as below.
 
diff --git a/Documentation/devicetree/bindings/dma/moxa,moxart-dma.txt b/Documentation/devicetree/bindings/dma/moxa,moxart-dma.txt
new file mode 100644
index 000000000000..8a9f3559335b
--- /dev/null
+++ b/Documentation/devicetree/bindings/dma/moxa,moxart-dma.txt
@@ -0,0 +1,45 @@
+MOXA ART DMA Controller
+
+See dma.txt first
+
+Required properties:
+
+- compatible :  Must be "moxa,moxart-dma"
+- reg :         Should contain registers location and length
+- interrupts :  Should contain an interrupt-specifier for the sole
+                interrupt generated by the device
+- #dma-cells :  Should be 1, a single cell holding a line request number
+
+Example:
+
+        dma: dma@90500000 {
+                compatible = "moxa,moxart-dma";
+                reg = <0x90500080 0x40>;
+                interrupts = <24 0>;
+                #dma-cells = <1>;
+        };
+
+
+Clients:
+
+DMA clients connected to the MOXA ART DMA controller must use the format
+described in the dma.txt file, using a two-cell specifier for each channel:
+a phandle plus one integer cells.
+The two cells in order are:
+
+1. A phandle pointing to the DMA controller.
+2. Peripheral identifier for the hardware handshaking interface.
+
+Example:
+Use specific request line passing from dma
+For example, MMC request line is 5
+
+        sdhci: sdhci@98e00000 {
+                compatible = "moxa,moxart-sdhci";
+                reg = <0x98e00000 0x5C>;
+                interrupts = <5 0>;
+                clocks = <&clk_apb>;
+                dmas =  <&dma 5>,
+                        <&dma 5>;
+                dma-names = "tx", "rx";
+        };