Merge tag 'dmaengine-5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine

b00ed48b · Linus Torvalds <[email protected]> · 2022-05-29 11:38:27 -07:00

Pull dmaengine updates from Vinod Koul:
 "Nothing special, this includes a couple of new device support and new
  driver support and bunch of driver updates.

  New support:

   - Tegra gpcdma driver support

   - Qualcomm SM8350, Sm8450 and SC7280 device support

   - Renesas RZN1 dma and platform support

  Updates:

   - stm32 device pause/resume support and updates

   - DMA memset ops Documentation and usage clarification

   - deprecate '#dma-channels' & '#dma-requests' bindings

   - driver updates for stm32, ptdma idsx etc"

* tag 'dmaengine-5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine: (87 commits)
  dmaengine: idxd: make idxd_wq_enable() return 0 if wq is already enabled
  dmaengine: sun6i: Add support for the D1 variant
  dmaengine: sun6i: Add support for 34-bit physical addresses
  dmaengine: sun6i: Do not use virt_to_phys
  dt-bindings: dma: sun50i-a64: Add compatible for D1
  dmaengine: tegra: Remove unused switch case
  dmaengine: tegra: Fix uninitialized variable usage
  dmaengine: stm32-dma: add device_pause/device_resume support
  dmaengine: stm32-dma: rename pm ops before dma pause/resume introduction
  dmaengine: stm32-dma: pass DMA_SxSCR value to stm32_dma_handle_chan_done()
  dmaengine: stm32-dma: introduce stm32_dma_sg_inc to manage chan->next_sg
  dmaengine: stm32-dmamux: avoid reset of dmamux if used by coprocessor
  dmaengine: qcom: gpi: Add support for sc7280
  dt-bindings: dma: pl330: Add power-domains
  dmaengine: stm32-mdma: use dev_dbg on non-busy channel spurious it
  dmaengine: stm32-mdma: fix chan initialization in stm32_mdma_irq_handler()
  dmaengine: stm32-mdma: remove GISR1 register
  dmaengine: ti: deprecate '#dma-channels'
  dmaengine: mmp: deprecate '#dma-channels'
  dmaengine: pxa: deprecate '#dma-channels' and '#dma-requests'
  ...

Commit: b00ed48bb0a7c295facf9036135a573a5cdbe7de
Parents: c3a9a3c5 · d1a28597

Merge commit. Changes below are compared with the first parent: c3a9a3c5.

Changes

64 files changed · +2744 −349

File	Status	Add	Del	Content
Documentation/devicetree/bindings/clock/renesas,r9a06g032-sysctrl.yaml	modified	+11	−0	View file
Documentation/devicetree/bindings/dma/allwinner,sun50i-a64-dma.yaml	modified	+6	−3	View file
Documentation/devicetree/bindings/dma/altr,msgdma.yaml	modified	+1	−1	View file
Documentation/devicetree/bindings/dma/arm,pl330.yaml	modified	+3	−0	View file
Documentation/devicetree/bindings/dma/mmp-dma.txt	modified	+6	−4	View file
Documentation/devicetree/bindings/dma/nvidia,tegra186-gpc-dma.yaml	added	+110	−0	View file
Documentation/devicetree/bindings/dma/qcom,gpi.yaml	modified	+3	−0	View file
Documentation/devicetree/bindings/dma/renesas,rcar-dmac.yaml	modified	+4	−6	View file
Documentation/devicetree/bindings/dma/renesas,rzn1-dmamux.yaml	added	+51	−0	View file
Documentation/devicetree/bindings/dma/sifive,fu540-c000-pdma.yaml	modified	+17	−2	View file
Documentation/devicetree/bindings/dma/snps,dma-spear1340.yaml	modified	+7	−1	View file
Documentation/devicetree/bindings/dma/sprd-dma.txt	modified	+5	−2	View file
Documentation/devicetree/bindings/dma/xilinx/xilinx_dma.txt	modified	+5	−1	View file
Documentation/driver-api/dmaengine/provider.rst	modified	+7	−1	View file
MAINTAINERS	modified	+2	−1	View file
drivers/clk/renesas/r9a06g032-clocks.c	modified	+39	−1	View file
drivers/dma/Kconfig	modified	+13	−1	View file
drivers/dma/Makefile	modified	+1	−0	View file
drivers/dma/amba-pl08x.c	modified	+0	−11	View file
drivers/dma/at_hdmac.c	modified	+9	−1	View file
drivers/dma/at_xdmac.c	modified	+8	−1	View file
drivers/dma/bestcomm/bestcomm.c	modified	+2	−0	View file
drivers/dma/dma-jz4780.c	modified	+9	−0	View file
drivers/dma/dmaengine.c	modified	+0	−7	View file
drivers/dma/dmatest.c	modified	+10	−3	View file
drivers/dma/dw/Kconfig	modified	+9	−0	View file
drivers/dma/dw/Makefile	modified	+2	−0	View file
drivers/dma/dw/platform.c	modified	+1	−0	View file
drivers/dma/dw/rzn1-dmamux.c	added	+155	−0	View file
drivers/dma/ep93xx_dma.c	modified	+1	−1	View file
drivers/dma/idxd/cdev.c	modified	+12	−6	View file
drivers/dma/idxd/device.c	modified	+105	−46	View file
drivers/dma/idxd/dma.c	modified	+28	−37	View file
drivers/dma/idxd/idxd.h	modified	+14	−6	View file
drivers/dma/idxd/init.c	modified	+15	−15	View file
drivers/dma/idxd/registers.h	modified	+1	−0	View file
drivers/dma/idxd/sysfs.c	modified	+9	−3	View file
drivers/dma/mediatek/mtk-cqdma.c	modified	+4	−8	View file
drivers/dma/mediatek/mtk-hsdma.c	modified	+5	−8	View file
drivers/dma/mmp_pdma.c	modified	+9	−5	View file
drivers/dma/mv_xor_v2.c	modified	+2	−2	View file
drivers/dma/nbpfaxi.c	modified	+6	−8	View file
drivers/dma/plx_dma.c	modified	+2	−2	View file
drivers/dma/ptdma/ptdma-dev.c	modified	+19	−17	View file
drivers/dma/ptdma/ptdma-dmaengine.c	modified	+15	−1	View file
drivers/dma/ptdma/ptdma.h	modified	+13	−0	View file
drivers/dma/pxa_dma.c	modified	+10	−3	View file
drivers/dma/qcom/gpi.c	modified	+16	−5	View file
drivers/dma/qcom/hidma.c	modified	+12	−1	View file
drivers/dma/sf-pdma/sf-pdma.c	modified	+16	−8	View file
drivers/dma/sf-pdma/sf-pdma.h	modified	+2	−6	View file
drivers/dma/sh/Kconfig	modified	+1	−1	View file
drivers/dma/sprd-dma.c	modified	+5	−1	View file
drivers/dma/stm32-dma.c	modified	+268	−43	View file
drivers/dma/stm32-dmamux.c	modified	+1	−1	View file
drivers/dma/stm32-mdma.c	modified	+32	−21	View file
drivers/dma/sun6i-dma.c	modified	+58	−34	View file
drivers/dma/tegra186-gpc-dma.c	added	+1498	−0	View file
drivers/dma/ti/cppi41.c	modified	+5	−1	View file
drivers/dma/ti/k3-psil-am62.c	modified	+4	−4	View file
drivers/dma/xilinx/zynqmp_dma.c	modified	+13	−4	View file
include/linux/dmaengine.h	modified	+8	−1	View file
include/linux/soc/renesas/r9a06g032-sysctrl.h	added	+11	−0	View file
include/uapi/linux/idxd.h	modified	+28	−3	View file

Only the first 600 diff lines are shown. Download the complete patch.

Documentation/devicetree/bindings/clock/renesas,r9a06g032-sysctrl.yaml

View file

diff --git a/Documentation/devicetree/bindings/clock/renesas,r9a06g032-sysctrl.yaml b/Documentation/devicetree/bindings/clock/renesas,r9a06g032-sysctrl.yaml
index 25dbb0f..95bf485 100644
--- a/Documentation/devicetree/bindings/clock/renesas,r9a06g032-sysctrl.yaml
+++ b/Documentation/devicetree/bindings/clock/renesas,r9a06g032-sysctrl.yaml
@@ -39,6 +39,17 @@ properties:
   '#power-domain-cells':
     const: 0
 
+  '#address-cells':
+    const: 1
+
+  '#size-cells':
+    const: 1
+
+patternProperties:
+  "^dma-router@[a-f0-9]+$":
+    type: object
+    $ref: "../dma/renesas,rzn1-dmamux.yaml#"
+
 required:
   - compatible
   - reg

Documentation/devicetree/bindings/dma/allwinner,sun50i-a64-dma.yaml

View file

diff --git a/Documentation/devicetree/bindings/dma/allwinner,sun50i-a64-dma.yaml b/Documentation/devicetree/bindings/dma/allwinner,sun50i-a64-dma.yaml
index b6e1ebf..ff0a5c5 100644
--- a/Documentation/devicetree/bindings/dma/allwinner,sun50i-a64-dma.yaml
+++ b/Documentation/devicetree/bindings/dma/allwinner,sun50i-a64-dma.yaml
@@ -20,9 +20,11 @@ properties:
 
   compatible:
     oneOf:
-      - const: allwinner,sun50i-a64-dma
-      - const: allwinner,sun50i-a100-dma
-      - const: allwinner,sun50i-h6-dma
+      - enum:
+          - allwinner,sun20i-d1-dma
+          - allwinner,sun50i-a64-dma
+          - allwinner,sun50i-a100-dma
+          - allwinner,sun50i-h6-dma
       - items:
           - const: allwinner,sun8i-r40-dma
           - const: allwinner,sun50i-a64-dma
@@ -58,6 +60,7 @@ if:
   properties:
     compatible:
       enum:
+        - allwinner,sun20i-d1-dma
         - allwinner,sun50i-a100-dma
         - allwinner,sun50i-h6-dma
 

Documentation/devicetree/bindings/dma/altr,msgdma.yaml

View file

diff --git a/Documentation/devicetree/bindings/dma/altr,msgdma.yaml b/Documentation/devicetree/bindings/dma/altr,msgdma.yaml
index b193ee2..b53ac76 100644
--- a/Documentation/devicetree/bindings/dma/altr,msgdma.yaml
+++ b/Documentation/devicetree/bindings/dma/altr,msgdma.yaml
@@ -7,7 +7,7 @@ $schema: http://devicetree.org/meta-schemas/core.yaml#
 title: Altera mSGDMA IP core
 
 maintainers:
-  - Olivier Dautricourt <[email protected]>
+  - Olivier Dautricourt <[email protected]>
 
 description: |
   Altera / Intel modular Scatter-Gather Direct Memory Access (mSGDMA)

Documentation/devicetree/bindings/dma/arm,pl330.yaml

View file

diff --git a/Documentation/devicetree/bindings/dma/arm,pl330.yaml b/Documentation/devicetree/bindings/dma/arm,pl330.yaml
index decab18..2bec69b 100644
--- a/Documentation/devicetree/bindings/dma/arm,pl330.yaml
+++ b/Documentation/devicetree/bindings/dma/arm,pl330.yaml
@@ -55,6 +55,9 @@ properties:
 
   dma-coherent: true
 
+  power-domains:
+    maxItems: 1
+
   resets:
     minItems: 1
     maxItems: 2

Documentation/devicetree/bindings/dma/mmp-dma.txt

View file

diff --git a/Documentation/devicetree/bindings/dma/mmp-dma.txt b/Documentation/devicetree/bindings/dma/mmp-dma.txt
index 8f7364a..ec18bf0 100644
--- a/Documentation/devicetree/bindings/dma/mmp-dma.txt
+++ b/Documentation/devicetree/bindings/dma/mmp-dma.txt
@@ -10,10 +10,12 @@ Required properties:
 		or one irq for pdma device
 
 Optional properties:
-- #dma-channels: Number of DMA channels supported by the controller (defaults
+- dma-channels: Number of DMA channels supported by the controller (defaults
   to 32 when not specified)
-- #dma-requests: Number of DMA requestor lines supported by the controller
+- #dma-channels: deprecated
+- dma-requests: Number of DMA requestor lines supported by the controller
   (defaults to 32 when not specified)
+- #dma-requests: deprecated
 
 "marvell,pdma-1.0"
 Used platforms: pxa25x, pxa27x, pxa3xx, pxa93x, pxa168, pxa910, pxa688.
@@ -33,7 +35,7 @@ pdma: dma-controller@d4000000 {
 	      reg = <0xd4000000 0x10000>;
 	      interrupts = <0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15>;
 	      interrupt-parent = <&intcmux32>;
-	      #dma-channels = <16>;
+	      dma-channels = <16>;
       };
 
 /*
@@ -45,7 +47,7 @@ pdma: dma-controller@d4000000 {
 	      compatible = "marvell,pdma-1.0";
 	      reg = <0xd4000000 0x10000>;
 	      interrupts = <47>;
-	      #dma-channels = <16>;
+	      dma-channels = <16>;
       };
 
 

Documentation/devicetree/bindings/dma/nvidia,tegra186-gpc-dma.yaml

View file

diff --git a/Documentation/devicetree/bindings/dma/nvidia,tegra186-gpc-dma.yaml b/Documentation/devicetree/bindings/dma/nvidia,tegra186-gpc-dma.yaml
new file mode 100644
index 0000000..9dd1476
--- /dev/null
+++ b/Documentation/devicetree/bindings/dma/nvidia,tegra186-gpc-dma.yaml
@@ -0,0 +1,110 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/dma/nvidia,tegra186-gpc-dma.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NVIDIA Tegra GPC DMA Controller Device Tree Bindings
+
+description: |
+  The Tegra General Purpose Central (GPC) DMA controller is used for faster
+  data transfers between memory to memory, memory to device and device to
+  memory.
+
+maintainers:
+  - Jon Hunter <[email protected]>
+  - Rajesh Gumasta <[email protected]>
+
+allOf:
+  - $ref: "dma-controller.yaml#"
+
+properties:
+  compatible:
+    oneOf:
+      - const: nvidia,tegra186-gpcdma
+      - items:
+          - const: nvidia,tegra194-gpcdma
+          - const: nvidia,tegra186-gpcdma
+
+  "#dma-cells":
+    const: 1
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    description:
+      Should contain all of the per-channel DMA interrupts in
+      ascending order with respect to the DMA channel index.
+    minItems: 1
+    maxItems: 31
+
+  resets:
+    maxItems: 1
+
+  reset-names:
+    const: gpcdma
+
+  iommus:
+    maxItems: 1
+
+  dma-coherent: true
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - resets
+  - reset-names
+  - "#dma-cells"
+  - iommus
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/memory/tegra186-mc.h>
+    #include <dt-bindings/reset/tegra186-reset.h>
+
+    dma-controller@2600000 {
+        compatible = "nvidia,tegra186-gpcdma";
+        reg = <0x2600000 0x210000>;
+        resets = <&bpmp TEGRA186_RESET_GPCDMA>;
+        reset-names = "gpcdma";
+        interrupts = <GIC_SPI 76 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 77 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 78 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 79 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 80 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 81 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 82 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 83 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 84 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 85 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 86 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 87 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 88 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 89 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 90 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 91 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 92 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 93 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 94 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 95 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 96 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 97 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 98 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 99 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 100 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 101 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 102 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 103 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 104 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 105 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 106 IRQ_TYPE_LEVEL_HIGH>;
+        #dma-cells = <1>;
+        iommus = <&smmu TEGRA186_SID_GPCDMA_0>;
+        dma-coherent;
+    };
+...

Documentation/devicetree/bindings/dma/qcom,gpi.yaml

View file

diff --git a/Documentation/devicetree/bindings/dma/qcom,gpi.yaml b/Documentation/devicetree/bindings/dma/qcom,gpi.yaml
index d09d79d..7d2fc4e 100644
--- a/Documentation/devicetree/bindings/dma/qcom,gpi.yaml
+++ b/Documentation/devicetree/bindings/dma/qcom,gpi.yaml
@@ -19,9 +19,12 @@ allOf:
 properties:
   compatible:
     enum:
+      - qcom,sc7280-gpi-dma
       - qcom,sdm845-gpi-dma
       - qcom,sm8150-gpi-dma
       - qcom,sm8250-gpi-dma
+      - qcom,sm8350-gpi-dma
+      - qcom,sm8450-gpi-dma
 
   reg:
     maxItems: 1

Documentation/devicetree/bindings/dma/renesas,rcar-dmac.yaml

View file

diff --git a/Documentation/devicetree/bindings/dma/renesas,rcar-dmac.yaml b/Documentation/devicetree/bindings/dma/renesas,rcar-dmac.yaml
index 7c6badf..7202cd6 100644
--- a/Documentation/devicetree/bindings/dma/renesas,rcar-dmac.yaml
+++ b/Documentation/devicetree/bindings/dma/renesas,rcar-dmac.yaml
@@ -42,11 +42,10 @@ properties:
           - const: renesas,rcar-dmac
 
       - items:
-          - const: renesas,dmac-r8a779a0 # R-Car V3U
-
-      - items:
-          - const: renesas,dmac-r8a779f0 # R-Car S4-8
-          - const: renesas,rcar-gen4-dmac
+          - enum:
+              - renesas,dmac-r8a779a0     # R-Car V3U
+              - renesas,dmac-r8a779f0     # R-Car S4-8
+          - const: renesas,rcar-gen4-dmac # R-Car Gen4
 
   reg: true
 
@@ -121,7 +120,6 @@ if:
     compatible:
       contains:
         enum:
-          - renesas,dmac-r8a779a0
           - renesas,rcar-gen4-dmac
 then:
   properties:

Documentation/devicetree/bindings/dma/renesas,rzn1-dmamux.yaml

View file

diff --git a/Documentation/devicetree/bindings/dma/renesas,rzn1-dmamux.yaml b/Documentation/devicetree/bindings/dma/renesas,rzn1-dmamux.yaml
new file mode 100644
index 0000000..d83013b
--- /dev/null
+++ b/Documentation/devicetree/bindings/dma/renesas,rzn1-dmamux.yaml
@@ -0,0 +1,51 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/dma/renesas,rzn1-dmamux.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Renesas RZ/N1 DMA mux
+
+maintainers:
+  - Miquel Raynal <[email protected]>
+
+allOf:
+  - $ref: "dma-router.yaml#"
+
+properties:
+  compatible:
+    const: renesas,rzn1-dmamux
+
+  reg:
+    maxItems: 1
+    description: DMA mux first register offset within the system control parent.
+
+  '#dma-cells':
+    const: 6
+    description:
+      The first four cells are dedicated to the master DMA controller. The fifth
+      cell gives the DMA mux bit index that must be set starting from 0. The
+      sixth cell gives the binary value that must be written there, ie. 0 or 1.
+
+  dma-masters:
+    minItems: 1
+    maxItems: 2
+
+  dma-requests:
+    const: 32
+
+required:
+  - reg
+  - dma-requests
+
+additionalProperties: false
+
+examples:
+  - |
+    dma-router@a0 {
+      compatible = "renesas,rzn1-dmamux";
+      reg = <0xa0 4>;
+      #dma-cells = <6>;
+      dma-masters = <&dma0 &dma1>;
+      dma-requests = <32>;
+    };

Documentation/devicetree/bindings/dma/sifive,fu540-c000-pdma.yaml

View file

diff --git a/Documentation/devicetree/bindings/dma/sifive,fu540-c000-pdma.yaml b/Documentation/devicetree/bindings/dma/sifive,fu540-c000-pdma.yaml
index 47c46af..3271755 100644
--- a/Documentation/devicetree/bindings/dma/sifive,fu540-c000-pdma.yaml
+++ b/Documentation/devicetree/bindings/dma/sifive,fu540-c000-pdma.yaml
@@ -28,7 +28,15 @@ allOf:
 properties:
   compatible:
     items:
-      - const: sifive,fu540-c000-pdma
+      - enum:
+          - sifive,fu540-c000-pdma
+      - const: sifive,pdma0
+    description:
+      Should be "sifive,<chip>-pdma" and "sifive,pdma<version>".
+      Supported compatible strings are -
+      "sifive,fu540-c000-pdma" for the SiFive PDMA v0 as integrated onto the
+      SiFive FU540 chip resp and "sifive,pdma0" for the SiFive PDMA v0 IP block
+      with no chip integration tweaks.
 
   reg:
     maxItems: 1
@@ -37,6 +45,12 @@ properties:
     minItems: 1
     maxItems: 8
 
+  dma-channels:
+    description: For backwards-compatibility, the default value is 4
+    minimum: 1
+    maximum: 4
+    default: 4
+
   '#dma-cells':
     const: 1
 
@@ -50,8 +64,9 @@ unevaluatedProperties: false
 examples:
   - |
     dma-controller@3000000 {
-      compatible = "sifive,fu540-c000-pdma";
+      compatible = "sifive,fu540-c000-pdma", "sifive,pdma0";
       reg = <0x3000000 0x8000>;
+      dma-channels = <4>;
       interrupts = <23>, <24>, <25>, <26>, <27>, <28>, <29>, <30>;
       #dma-cells = <1>;
     };

Documentation/devicetree/bindings/dma/snps,dma-spear1340.yaml

View file

diff --git a/Documentation/devicetree/bindings/dma/snps,dma-spear1340.yaml b/Documentation/devicetree/bindings/dma/snps,dma-spear1340.yaml
index 6b35089..c13649b 100644
--- a/Documentation/devicetree/bindings/dma/snps,dma-spear1340.yaml
+++ b/Documentation/devicetree/bindings/dma/snps,dma-spear1340.yaml
@@ -15,7 +15,13 @@ allOf:
 
 properties:
   compatible:
-    const: snps,dma-spear1340
+    oneOf:
+      - const: snps,dma-spear1340
+      - items:
+          - enum:
+              - renesas,r9a06g032-dma
+          - const: renesas,rzn1-dma
+
 
   "#dma-cells":
     minimum: 3

Documentation/devicetree/bindings/dma/sprd-dma.txt

View file

diff --git a/Documentation/devicetree/bindings/dma/sprd-dma.txt b/Documentation/devicetree/bindings/dma/sprd-dma.txt
index adccea9..c7e9b5f 100644
--- a/Documentation/devicetree/bindings/dma/sprd-dma.txt
+++ b/Documentation/devicetree/bindings/dma/sprd-dma.txt
@@ -8,10 +8,13 @@ Required properties:
 - interrupts: Should contain one interrupt shared by all channel.
 - #dma-cells: must be <1>. Used to represent the number of integer
 	cells in the dmas property of client device.
-- #dma-channels : Number of DMA channels supported. Should be 32.
+- dma-channels : Number of DMA channels supported. Should be 32.
 - clock-names: Should contain the clock of the DMA controller.
 - clocks: Should contain a clock specifier for each entry in clock-names.
 
+Deprecated properties:
+- #dma-channels : Number of DMA channels supported. Should be 32.
+
 Example:
 
 Controller:
@@ -20,7 +23,7 @@ apdma: dma-controller@20100000 {
 	reg = <0x20100000 0x4000>;
 	interrupts = <GIC_SPI 50 IRQ_TYPE_LEVEL_HIGH>;
 	#dma-cells = <1>;
-	#dma-channels = <32>;
+	dma-channels = <32>;
 	clock-names = "enable";
 	clocks = <&clk_ap_ahb_gates 5>;
 };

Documentation/devicetree/bindings/dma/xilinx/xilinx_dma.txt

View file

diff --git a/Documentation/devicetree/bindings/dma/xilinx/xilinx_dma.txt b/Documentation/devicetree/bindings/dma/xilinx/xilinx_dma.txt
index 325aca5..d1700a5 100644
--- a/Documentation/devicetree/bindings/dma/xilinx/xilinx_dma.txt
+++ b/Documentation/devicetree/bindings/dma/xilinx/xilinx_dma.txt
@@ -110,7 +110,11 @@ axi_vdma_0: axivdma@40030000 {
 Required properties:
 - dmas: a list of <[Video DMA device phandle] [Channel ID]> pairs,
 	where Channel ID is '0' for write/tx and '1' for read/rx
-	channel.
+	channel. For MCMDA, MM2S channel(write/tx) ID start from
+	'0' and is in [0-15] range. S2MM channel(read/rx) ID start
+	from '16' and is in [16-31] range. These channels ID are
+	fixed irrespective of IP configuration.
+
 - dma-names: a list of DMA channel names, one per "dmas" entry
 
 Example:

Documentation/driver-api/dmaengine/provider.rst

View file

diff --git a/Documentation/driver-api/dmaengine/provider.rst b/Documentation/driver-api/dmaengine/provider.rst
index 0072c9c..1e0f1f8 100644
--- a/Documentation/driver-api/dmaengine/provider.rst
+++ b/Documentation/driver-api/dmaengine/provider.rst
@@ -206,6 +206,12 @@ Currently, the types available are:
   - The device is able to perform parity check using RAID6 P+Q
     algorithm against a memory buffer.
 
+- DMA_MEMSET
+
+  - The device is able to fill memory with the provided pattern
+
+  - The pattern is treated as a single byte signed value.
+
 - DMA_INTERRUPT
 
   - The device is able to trigger a dummy transfer that will
@@ -457,7 +463,7 @@ supported.
   - Should use dma_set_residue to report it
 
   - In the case of a cyclic transfer, it should only take into
-    account the current period.
+    account the total size of the cyclic buffer.
 
   - Should return DMA_OUT_OF_ORDER if the device does not support in order
     completion and is completing the operation out of order.

MAINTAINERS

View file

diff --git a/MAINTAINERS b/MAINTAINERS
index a0f2517..b85ee59 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -820,7 +820,7 @@ S:	Maintained
 F:	drivers/mailbox/mailbox-altera.c
 
 ALTERA MSGDMA IP CORE DRIVER
-M:	Olivier Dautricourt <[email protected]>
+M:	Olivier Dautricourt <[email protected]>
 R:	Stefan Roese <[email protected]>
 L:	[email protected]
 S:	Odd Fixes
@@ -19202,6 +19202,7 @@ SYNOPSYS DESIGNWARE DMAC DRIVER
 M:	Viresh Kumar <[email protected]>
 R:	Andy Shevchenko <[email protected]>
 S:	Maintained
+F:	Documentation/devicetree/bindings/dma/renesas,rzn1-dmamux.yaml
 F:	Documentation/devicetree/bindings/dma/snps,dma-spear1340.yaml
 F:	drivers/dma/dw/
 F:	include/dt-bindings/dma/dw-dmac.h

drivers/clk/renesas/r9a06g032-clocks.c

View file

diff --git a/drivers/clk/renesas/r9a06g032-clocks.c b/drivers/clk/renesas/r9a06g032-clocks.c
index 1826aa7..35ffc46 100644
--- a/drivers/clk/renesas/r9a06g032-clocks.c
+++ b/drivers/clk/renesas/r9a06g032-clocks.c
@@ -16,13 +16,17 @@
 #include <linux/math64.h>
 #include <linux/of.h>
 #include <linux/of_address.h>
+#include <linux/of_platform.h>
 #include <linux/platform_device.h>
 #include <linux/pm_clock.h>
 #include <linux/pm_domain.h>
 #include <linux/slab.h>
+#include <linux/soc/renesas/r9a06g032-sysctrl.h>
 #include <linux/spinlock.h>
 #include <dt-bindings/clock/r9a06g032-sysctrl.h>
 
+#define R9A06G032_SYSCTRL_DMAMUX 0xA0
+
 struct r9a06g032_gate {
 	u16 gate, reset, ready, midle,
 		scon, mirack, mistat;
@@ -315,6 +319,30 @@ struct r9a06g032_priv {
 	void __iomem *reg;
 };
 
+static struct r9a06g032_priv *sysctrl_priv;
+
+/* Exported helper to access the DMAMUX register */
+int r9a06g032_sysctrl_set_dmamux(u32 mask, u32 val)
+{
+	unsigned long flags;
+	u32 dmamux;
+
+	if (!sysctrl_priv)
+		return -EPROBE_DEFER;
+
+	spin_lock_irqsave(&sysctrl_priv->lock, flags);
+
+	dmamux = readl(sysctrl_priv->reg + R9A06G032_SYSCTRL_DMAMUX);
+	dmamux &= ~mask;
+	dmamux |= val & mask;
+	writel(dmamux, sysctrl_priv->reg + R9A06G032_SYSCTRL_DMAMUX);
+
+	spin_unlock_irqrestore(&sysctrl_priv->lock, flags);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(r9a06g032_sysctrl_set_dmamux);
+
 /* register/bit pairs are encoded as an uint16_t */
 static void
 clk_rdesc_set(struct r9a06g032_priv *clocks,
@@ -963,7 +991,17 @@ static int __init r9a06g032_clocks_probe(struct platform_device *pdev)
 	if (error)
 		return error;
 
-	return r9a06g032_add_clk_domain(dev);
+	error = r9a06g032_add_clk_domain(dev);
+	if (error)
+		return error;
+
+	sysctrl_priv = clocks;
+
+	error = of_platform_populate(np, NULL, NULL, dev);
+	if (error)
+		dev_err(dev, "Failed to populate children (%d)\n", error);
+
+	return 0;
 }
 
 static const struct of_device_id r9a06g032_match[] = {

drivers/dma/Kconfig

View file

diff --git a/drivers/dma/Kconfig b/drivers/dma/Kconfig
index d5de3f7..487ed4d 100644
--- a/drivers/dma/Kconfig
+++ b/drivers/dma/Kconfig
@@ -163,7 +163,7 @@ config DMA_SUN4I
 
 config DMA_SUN6I
 	tristate "Allwinner A31 SoCs DMA support"
-	depends on MACH_SUN6I || MACH_SUN8I || (ARM64 && ARCH_SUNXI) || COMPILE_TEST
+	depends on ARCH_SUNXI || COMPILE_TEST
 	depends on RESET_CONTROLLER
 	select DMA_ENGINE
 	select DMA_VIRTUAL_CHANNELS
@@ -629,6 +629,18 @@ config TXX9_DMAC
 	  Support the TXx9 SoC internal DMA controller.  This can be
 	  integrated in chips such as the Toshiba TX4927/38/39.
 
+config TEGRA186_GPC_DMA
+	tristate "NVIDIA Tegra GPC DMA support"
+	depends on (ARCH_TEGRA || COMPILE_TEST) && ARCH_DMA_ADDR_T_64BIT
+	depends on IOMMU_API
+	select DMA_ENGINE
+	help
+	  Support for the NVIDIA Tegra General Purpose Central DMA controller.
+	  The DMA controller has multiple DMA channels which can be configured
+	  for different peripherals like UART, SPI, etc which are on APB bus.
+	  This DMA controller transfers data from memory to peripheral FIFO
+	  or vice versa. It also supports memory to memory data transfer.
+
 config TEGRA20_APB_DMA
 	tristate "NVIDIA Tegra20 APB DMA support"
 	depends on ARCH_TEGRA || COMPILE_TEST

drivers/dma/Makefile

View file

diff --git a/drivers/dma/Makefile b/drivers/dma/Makefile
index 616d926..2f1b87f 100644
--- a/drivers/dma/Makefile
+++ b/drivers/dma/Makefile
@@ -72,6 +72,7 @@ obj-$(CONFIG_STM32_MDMA) += stm32-mdma.o
 obj-$(CONFIG_SPRD_DMA) += sprd-dma.o
 obj-$(CONFIG_S3C24XX_DMAC) += s3c24xx-dma.o
 obj-$(CONFIG_TXX9_DMAC) += txx9dmac.o
+obj-$(CONFIG_TEGRA186_GPC_DMA) += tegra186-gpc-dma.o

This diff is incomplete. Download the complete patch.