Merge tag 'dmaengine-6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine

Pull dmaengine updates from Vinod Koul:
 "New hardware support:

   - Qualcomm SAR2130P GPI dma support

   - Sifive PIC64GX pdma support

   - Rcar r7s72100 support and associated updates

  Updates:

   - STM32 DMA3 updates for packing/unpacking mode and prevention of
     additional xfers

   - Simplification of devm_acpi_dma_controller_register() and associate
     cleanup including headers

   - loongson prefix renames

   - Switch back to platform_driver::remove() subsystem update"

* tag 'dmaengine-6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine:
  dmaengine: loongson2-apb: Rename the prefix ls2x to loongson2
  dt-bindings: dma: sifive pdma: Add PIC64GX to compatibles
  dmaengine: fix typo in the comment
  dmaengine: stm32-dma3: clamp AXI burst using match data
  dmaengine: stm32-dma3: prevent LL refactoring thanks to DT configuration
  dt-bindings: dma: stm32-dma3: prevent additional transfers
  dmaengine: stm32-dma3: refactor HW linked-list to optimize memory accesses
  dmaengine: stm32-dma3: prevent pack/unpack thanks to DT configuration
  dt-bindings: dma: stm32-dma3: prevent packing/unpacking mode
  dmaengine: idxd: Move DSA/IAA device IDs to IDXD driver
  dt-bindings: dma: qcom,gpi: Add SAR2130P compatible
  dmaengine: Switch back to struct platform_driver::remove()
  dmaengine: ep93xx: Fix unsigned compared against 0
  dmaengine: acpi: Clean up headers
  dmaengine: acpi: Simplify devm_acpi_dma_controller_register()
  dmaengine: acpi: Drop unused devm_acpi_dma_controller_free()
  dmaengine: sh: rz-dmac: add r7s72100 support
  dt-bindings: dma: rz-dmac: Document RZ/A1H SoC

Author: torvalds

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

@@ -26,6 +26,7 @@ properties:
           - enum:
               - qcom,qcm2290-gpi-dma
               - qcom,qdu1000-gpi-dma
+              - qcom,sar2130p-gpi-dma
               - qcom,sc7280-gpi-dma
               - qcom,sdx75-gpi-dma
               - qcom,sm6115-gpi-dma

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

@@ -4,18 +4,16 @@
 $id: http://devicetree.org/schemas/dma/renesas,rz-dmac.yaml#
 $schema: http://devicetree.org/meta-schemas/core.yaml#
 
-title: Renesas RZ/{G2L,G2UL,V2L} DMA Controller
+title: Renesas RZ DMA Controller
 
 maintainers:
   - Biju Das <biju.das.jz@bp.renesas.com>
 
-allOf:
-  - $ref: dma-controller.yaml#
-
 properties:
   compatible:
     items:
       - enum:
+          - renesas,r7s72100-dmac # RZ/A1H
           - renesas,r9a07g043-dmac # RZ/G2UL and RZ/Five
           - renesas,r9a07g044-dmac # RZ/G2{L,LC}
           - renesas,r9a07g054-dmac # RZ/V2L
@@ -93,13 +91,26 @@ required:
   - reg
   - interrupts
   - interrupt-names
-  - clocks
-  - clock-names
   - '#dma-cells'
   - dma-channels
-  - power-domains
-  - resets
-  - reset-names
+
+allOf:
+  - $ref: dma-controller.yaml#
+
+  - if:
+      not:
+        properties:
+          compatible:
+            contains:
+              enum:
+                - renesas,r7s72100-dmac
+    then:
+      required:
+        - clocks
+        - clock-names
+        - power-domains
+        - resets
+        - reset-names
 
 additionalProperties: false
 

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

@@ -27,11 +27,16 @@ allOf:
 
 properties:
   compatible:
-    items:
-      - enum:
-          - microchip,mpfs-pdma
-          - sifive,fu540-c000-pdma
-      - const: sifive,pdma0
+    oneOf:
+      - items:
+          - const: microchip,pic64gx-pdma
+          - const: microchip,mpfs-pdma
+          - const: sifive,pdma0
+      - items:
+          - enum:
+              - microchip,mpfs-pdma
+              - sifive,fu540-c000-pdma
+          - const: sifive,pdma0
     description:
       Should be "sifive,<chip>-pdma" and "sifive,pdma<version>".
       Supported compatible strings are -

Documentation/devicetree/bindings/dma/stm32/st,stm32-dma3.yaml

@@ -96,6 +96,12 @@ properties:
                including the update of the LLI if any
           0x3: at channel level, the transfer complete event is generated at the
                end of the last LLI
+        -bit 16: Prevent packing/unpacking mode
+          0x0: pack/unpack enabled when source data width/burst != destination data width/burst
+          0x1: memory data width/burst forced to peripheral data width/burst to prevent pack/unpack
+        -bit 17: Prevent additional transfers due to linked-list refactoring
+          0x0: don't prevent additional transfers for optimal performance
+          0x1: prevent additional transfer to accommodate user constraints such as single transfer
 
 required:
   - compatible

Documentation/driver-api/driver-model/devres.rst

@@ -458,7 +458,6 @@ SERDEV
 
 SLAVE DMA ENGINE
   devm_acpi_dma_controller_register()
-  devm_acpi_dma_controller_free()
 
 SPI
   devm_spi_alloc_host()

MAINTAINERS

@@ -13408,12 +13408,12 @@ S:	Maintained
 F:	Documentation/devicetree/bindings/gpio/loongson,ls-gpio.yaml
 F:	drivers/gpio/gpio-loongson-64bit.c
 
-LOONGSON LS2X APB DMA DRIVER
+LOONGSON-2 APB DMA DRIVER
 M:	Binbin Zhou <zhoubinbin@loongson.cn>
 L:	dmaengine@vger.kernel.org
 S:	Maintained
 F:	Documentation/devicetree/bindings/dma/loongson,ls2x-apbdma.yaml
-F:	drivers/dma/ls2x-apb-dma.c
+F:	drivers/dma/loongson2-apb-dma.c
 
 LOONGSON LS2X I2C DRIVER
 M:	Binbin Zhou <zhoubinbin@loongson.cn>

arch/loongarch/configs/loongson3_defconfig

@@ -845,7 +845,7 @@ CONFIG_RTC_CLASS=y
 CONFIG_RTC_DRV_EFI=y
 CONFIG_RTC_DRV_LOONGSON=y
 CONFIG_DMADEVICES=y
-CONFIG_LS2X_APB_DMA=y
+CONFIG_LOONGSON2_APB_DMA=y
 CONFIG_UDMABUF=y
 CONFIG_DMABUF_HEAPS=y
 CONFIG_DMABUF_HEAPS_SYSTEM=y

drivers/dma/Kconfig

@@ -378,6 +378,20 @@ config LOONGSON1_APB_DMA
 	  This selects support for the APB DMA controller in Loongson1 SoCs,
 	  which is required by Loongson1 NAND and audio support.
 
+config LOONGSON2_APB_DMA
+	tristate "Loongson2 APB DMA support"
+	depends on LOONGARCH || COMPILE_TEST
+	select DMA_ENGINE
+	select DMA_VIRTUAL_CHANNELS
+	help
+	  Support for the Loongson2 APB DMA controller driver. The
+	  DMA controller is having single DMA channel which can be
+	  configured for different peripherals like audio, nand, sdio
+	  etc which is in APB bus.
+
+	  This DMA controller transfers data from memory to peripheral fifo.
+	  It does not support memory to memory data transfer.
+
 config LPC18XX_DMAMUX
 	bool "NXP LPC18xx/43xx DMA MUX for PL080"
 	depends on ARCH_LPC18XX || COMPILE_TEST
@@ -396,20 +410,6 @@ config LPC32XX_DMAMUX
 	  Support for PL080 multiplexed DMA request lines on
 	  LPC32XX platrofm.
 
-config LS2X_APB_DMA
-	tristate "Loongson LS2X APB DMA support"
-	depends on LOONGARCH || COMPILE_TEST
-	select DMA_ENGINE
-	select DMA_VIRTUAL_CHANNELS
-	help
-	  Support for the Loongson LS2X APB DMA controller driver. The
-	  DMA controller is having single DMA channel which can be
-	  configured for different peripherals like audio, nand, sdio
-	  etc which is in APB bus.
-
-	  This DMA controller transfers data from memory to peripheral fifo.
-	  It does not support memory to memory data transfer.
-
 config MCF_EDMA
 	tristate "Freescale eDMA engine support, ColdFire mcf5441x SoCs"
 	depends on M5441x || (COMPILE_TEST && FSL_EDMA=n)

drivers/dma/Makefile

@@ -50,9 +50,9 @@ obj-$(CONFIG_INTEL_IOATDMA) += ioat/
 obj-y += idxd/
 obj-$(CONFIG_K3_DMA) += k3dma.o
 obj-$(CONFIG_LOONGSON1_APB_DMA) += loongson1-apb-dma.o
+obj-$(CONFIG_LOONGSON2_APB_DMA) += loongson2-apb-dma.o
 obj-$(CONFIG_LPC18XX_DMAMUX) += lpc18xx-dmamux.o
 obj-$(CONFIG_LPC32XX_DMAMUX) += lpc32xx-dmamux.o
-obj-$(CONFIG_LS2X_APB_DMA) += ls2x-apb-dma.o
 obj-$(CONFIG_MILBEAUT_HDMAC) += milbeaut-hdmac.o
 obj-$(CONFIG_MILBEAUT_XDMAC) += milbeaut-xdmac.o
 obj-$(CONFIG_MMP_PDMA) += mmp_pdma.o

drivers/dma/acpi-dma.c

@@ -9,18 +9,21 @@
  *	    Mika Westerberg <mika.westerberg@linux.intel.com>
  */
 
+#include <linux/acpi.h>
+#include <linux/acpi_dma.h>
 #include <linux/device.h>
 #include <linux/dma-mapping.h>
 #include <linux/err.h>
-#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/export.h>
+#include <linux/ioport.h>
 #include <linux/kernel.h>
 #include <linux/list.h>
 #include <linux/mutex.h>
-#include <linux/slab.h>
-#include <linux/ioport.h>
-#include <linux/acpi.h>
-#include <linux/acpi_dma.h>
 #include <linux/property.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/types.h>
 
 static LIST_HEAD(acpi_dma_list);
 static DEFINE_MUTEX(acpi_dma_lock);
@@ -236,7 +239,7 @@ int acpi_dma_controller_free(struct device *dev)
 }
 EXPORT_SYMBOL_GPL(acpi_dma_controller_free);
 
-static void devm_acpi_dma_release(struct device *dev, void *res)
+static void devm_acpi_dma_free(void *dev)
 {
 	acpi_dma_controller_free(dev);
 }
@@ -259,37 +262,15 @@ int devm_acpi_dma_controller_register(struct device *dev,
 		(struct acpi_dma_spec *, struct acpi_dma *),
 		void *data)
 {
-	void *res;
 	int ret;
 
-	res = devres_alloc(devm_acpi_dma_release, 0, GFP_KERNEL);
-	if (!res)
-		return -ENOMEM;
-
 	ret = acpi_dma_controller_register(dev, acpi_dma_xlate, data);
-	if (ret) {
-		devres_free(res);
+	if (ret)
 		return ret;
-	}
-	devres_add(dev, res);
-	return 0;
-}
-EXPORT_SYMBOL_GPL(devm_acpi_dma_controller_register);
 
-/**
- * devm_acpi_dma_controller_free - resource managed acpi_dma_controller_free()
- * @dev:	device that is unregistering as DMA controller
- *
- * Unregister a DMA controller registered with
- * devm_acpi_dma_controller_register(). Normally this function will not need to
- * be called and the resource management code will ensure that the resource is
- * freed.
- */
-void devm_acpi_dma_controller_free(struct device *dev)
-{
-	WARN_ON(devres_release(dev, devm_acpi_dma_release, NULL, NULL));
+	return devm_add_action_or_reset(dev, devm_acpi_dma_free, dev);
 }
-EXPORT_SYMBOL_GPL(devm_acpi_dma_controller_free);
+EXPORT_SYMBOL_GPL(devm_acpi_dma_controller_register);
 
 /**
  * acpi_dma_update_dma_spec - prepare dma specifier to pass to translation function