Merge branch 'for-4.7-dw' of git://git.kernel.org/pub/scm/linux/kerne…

…l/git/tj/libata

Pull libata sata_dwc_460ex updates from Tejun Heo:
 "Patches to bring sata_dwc_460ex up to snuff.

  It was a separate pull request because it depends on dmaengine dw
  platform changes which are now in mainline"

* 'for-4.7-dw' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata: (24 commits)
  ata: dwc: add DMADEVICES dependency
  powerpc/4xx: Device tree update for the 460ex DWC SATA
  ata: sata_dwc_460ex: make debug messages neat
  ata: sata_dwc_460ex: supply physical address of FIFO to DMA
  ata: sata_dwc_460ex: use devm_ioremap
  ata: sata_dwc_460ex: tidy up sata_dwc_clear_dmacr()
  ata: sata_dwc_460ex: use readl/writel_relaxed()
  ata: sata_dwc_460ex: switch to new dmaengine_terminate_* API
  ata: sata_dwc_460ex: add __iomem to register base pointer
  ata: sata_dwc_460ex: get rid of incorrect cast
  ata: sata_dwc_460ex: get rid of some pointless casts
  ata: sata_dwc_460ex: remove empty libata callback
  ata: sata_dwc_460ex: correct HOSTDEV{P}_FROM_*() macros
  ata: sata_dwc_460ex: get rid of global data
  ata: sata_dwc_460ex: add phy support
  ata: sata_dwc_460ex: use "dmas" DT property to find dma channel
  ata: sata_dwc_460ex: don't call ata_sff_qc_issue() on DMA commands
  ata: sata_dwc_460ex: skip dma setup for non-dma commands
  ata: sata_dwc_460ex: select only core part of DMA driver
  ata: sata_dwc_460ex: DMA is always a flow controller
  ...

arch/powerpc/boot/dts/canyonlands.dts

@@ -190,12 +190,21 @@
 					 /* DMA */ 0x2 &UIC0 0xc 0x4>;
 		};
 
+		AHBDMA: dma@bffd0800 {
+			compatible = "snps,dma-spear1340";
+			reg = <4 0xbffd0800 0x400>;
+			interrupt-parent = <&UIC3>;
+			interrupts = <0x5 0x4>;
+			#dma-cells = <3>;
+		};
+
 		SATA0: sata@bffd1000 {
 			compatible = "amcc,sata-460ex";
-			reg = <4 0xbffd1000 0x800 4 0xbffd0800 0x400>;
+			reg = <4 0xbffd1000 0x800>;
 			interrupt-parent = <&UIC3>;
-			interrupts = <0x0 0x4       /* SATA */
-				      0x5 0x4>;     /* AHBDMA */
+			interrupts = <0x0 0x4>;
+			dmas = <&AHBDMA 0 1 0>;
+			dma-names = "sata-dma";
 		};
 
 		POB0: opb {

drivers/ata/Kconfig

@@ -313,14 +313,23 @@ config ATA_PIIX
 
 config SATA_DWC
 	tristate "DesignWare Cores SATA support"
-	depends on 460EX
-	select DW_DMAC
+	depends on DMADEVICES
+	select GENERIC_PHY
 	help
 	  This option enables support for the on-chip SATA controller of the
 	  AppliedMicro processor 460EX.
 
 	  If unsure, say N.
 
+config SATA_DWC_OLD_DMA
+	bool "Support old device trees"
+	depends on SATA_DWC
+	select DW_DMAC_CORE
+	default y if 460EX
+	help
+	  This option enables support for old device trees without the
+	  "dmas" property.
+
 config SATA_DWC_DEBUG
 	bool "Debugging driver version"
 	depends on SATA_DWC