Merge branch 'topic/edma' into for-linus

Signed-off-by: Vinod Koul <vinod.koul@intel.com>

Conflicts:
	drivers/dma/edma.c

Documentation/devicetree/bindings/dma/ti-dma-crossbar.txt

@@ -2,9 +2,10 @@ Texas Instruments DMA Crossbar (DMA request router)
 
 Required properties:
 - compatible:	"ti,dra7-dma-crossbar" for DRA7xx DMA crossbar
+		"ti,am335x-edma-crossbar" for AM335x and AM437x
 - reg:		Memory map for accessing module
-- #dma-cells:	Should be set to <1>.
-		Clients should use the crossbar request number (input)
+- #dma-cells:	Should be set to to match with the DMA controller's dma-cells
+		for ti,dra7-dma-crossbar and <3> for ti,am335x-edma-crossbar.
 - dma-requests:	Number of DMA requests the crossbar can receive
 - dma-masters:	phandle pointing to the DMA controller
 
@@ -14,6 +15,15 @@ The DMA controller node need to have the following poroperties:
 Optional properties:
 - ti,dma-safe-map: Safe routing value for unused request lines
 
+Notes:
+When requesting channel via ti,dra7-dma-crossbar, the DMA clinet must request
+the DMA event number as crossbar ID (input to the DMA crossbar).
+
+For ti,am335x-edma-crossbar: the meaning of parameters of dmas for clients:
+dmas = <&edma_xbar 12 0 1>; where <12> is the DMA request number, <0> is the TC
+the event should be assigned and <1> is the mux selection for in the crossbar.
+When mux 0 is used the DMA channel can be requested directly from edma node.
+
 Example:
 
 /* DMA controller */
@@ -47,6 +57,7 @@ uart1: serial@4806a000 {
 	ti,hwmods = "uart1";
 	clock-frequency = <48000000>;
 	status = "disabled";
+	/* Requesting crossbar input 49 and 50 */
 	dmas = <&sdma_xbar 49>, <&sdma_xbar 50>;
 	dma-names = "tx", "rx";
 };

Documentation/devicetree/bindings/dma/ti-edma.txt

@@ -1,4 +1,119 @@
-TI EDMA
+Texas Instruments eDMA
+
+The eDMA3 consists of two components: Channel controller (CC) and Transfer
+Controller(s) (TC). The CC is the main entry for DMA users since it is
+responsible for the DMA channel handling, while the TCs are responsible to
+execute the actual DMA tansfer.
+
+------------------------------------------------------------------------------
+eDMA3 Channel Controller
+
+Required properties:
+- compatible:	"ti,edma3-tpcc" for the channel controller(s)
+- #dma-cells:	Should be set to <2>. The first number is the DMA request
+		number and the second is the TC the channel is serviced on.
+- reg:		Memory map of eDMA CC
+- reg-names:	"edma3_cc"
+- interrupts:	Interrupt lines for CCINT, MPERR and CCERRINT.
+- interrupt-names: "edma3_ccint", "emda3_mperr" and "edma3_ccerrint"
+- ti,tptcs:	List of TPTCs associated with the eDMA in the following form:
+		<&tptc_phandle TC_priority_number>. The highest priority is 0.
+
+Optional properties:
+- ti,hwmods:	Name of the hwmods associated to the eDMA CC
+- ti,edma-memcpy-channels: List of channels allocated to be used for memcpy, iow
+		these channels will be SW triggered channels. The list must
+		contain 16 bits numbers, see example.
+- ti,edma-reserved-slot-ranges: PaRAM slot ranges which should not be used by
+		the driver, they are allocated to be used by for example the
+		DSP. See example.
+
+------------------------------------------------------------------------------
+eDMA3 Transfer Controller
+
+Required properties:
+- compatible:	"ti,edma3-tptc" for the transfer controller(s)
+- reg:		Memory map of eDMA TC
+- interrupts:	Interrupt number for TCerrint.
+
+Optional properties:
+- ti,hwmods:	Name of the hwmods associated to the given eDMA TC
+- interrupt-names: "edma3_tcerrint"
+
+------------------------------------------------------------------------------
+Example:
+
+edma: edma@49000000 {
+	compatible = "ti,edma3-tpcc";
+	ti,hwmods = "tpcc";
+	reg =	<0x49000000 0x10000>;
+	reg-names = "edma3_cc";
+	interrupts = <12 13 14>;
+	interrupt-names = "edma3_ccint", "emda3_mperr", "edma3_ccerrint";
+	dma-requests = <64>;
+	#dma-cells = <2>;
+
+	ti,tptcs = <&edma_tptc0 7>, <&edma_tptc1 7>, <&edma_tptc2 0>;
+
+	/* Channel 20 and 21 is allocated for memcpy */
+	ti,edma-memcpy-channels = /bits/ 16 <20 21>;
+	/* The following PaRAM slots are reserved: 35-45 and 100-110 */
+	ti,edma-reserved-slot-ranges = /bits/ 16 <35 10>,
+				       /bits/ 16 <100 10>;
+};
+
+edma_tptc0: tptc@49800000 {
+	compatible = "ti,edma3-tptc";
+	ti,hwmods = "tptc0";
+	reg =	<0x49800000 0x100000>;
+	interrupts = <112>;
+	interrupt-names = "edm3_tcerrint";
+};
+
+edma_tptc1: tptc@49900000 {
+	compatible = "ti,edma3-tptc";
+	ti,hwmods = "tptc1";
+	reg =	<0x49900000 0x100000>;
+	interrupts = <113>;
+	interrupt-names = "edm3_tcerrint";
+};
+
+edma_tptc2: tptc@49a00000 {
+	compatible = "ti,edma3-tptc";
+	ti,hwmods = "tptc2";
+	reg =	<0x49a00000 0x100000>;
+	interrupts = <114>;
+	interrupt-names = "edm3_tcerrint";
+};
+
+sham: sham@53100000 {
+	compatible = "ti,omap4-sham";
+	ti,hwmods = "sham";
+	reg = <0x53100000 0x200>;
+	interrupts = <109>;
+	/* DMA channel 36 executed on eDMA TC0 - low priority queue */
+	dmas = <&edma 36 0>;
+	dma-names = "rx";
+};
+
+mcasp0: mcasp@48038000 {
+	compatible = "ti,am33xx-mcasp-audio";
+	ti,hwmods = "mcasp0";
+	reg = <0x48038000 0x2000>,
+		<0x46000000 0x400000>;
+	reg-names = "mpu", "dat";
+	interrupts = <80>, <81>;
+	interrupt-names = "tx", "rx";
+	status = "disabled";
+	/* DMA channels 8 and 9 executed on eDMA TC2 - high priority queue */
+	dmas = <&edma 8 2>,
+	       <&edma 9 2>;
+	dma-names = "tx", "rx";
+};
+
+------------------------------------------------------------------------------
+DEPRECATED binding, new DTS files must use the ti,edma3-tpcc/ti,edma3-tptc
+binding.
 
 Required properties:
 - compatible : "ti,edma3"

arch/arm/Kconfig

@@ -736,7 +736,6 @@ config ARCH_DAVINCI
 	select GENERIC_CLOCKEVENTS
 	select GENERIC_IRQ_CHIP
 	select HAVE_IDE
-	select TI_PRIV_EDMA
 	select USE_OF
 	select ZONE_DMA
 	help

arch/arm/boot/dts/am335x-evm.dts

@@ -743,8 +743,8 @@
 &mmc3 {
 	/* these are on the crossbar and are outlined in the
 	   xbar-event-map element */
-	dmas = <&edma 12
-		&edma 13>;
+	dmas = <&edma_xbar 12 0 1
+		&edma_xbar 13 0 2>;
 	dma-names = "tx", "rx";
 	status = "okay";
 	vmmc-supply = <&wlan_en_reg>;
@@ -766,11 +766,6 @@
 	};
 };
 
-&edma {
-	ti,edma-xbar-event-map = /bits/ 16 <1 12
-					    2 13>;
-};
-
 &sham {
 	status = "okay";
 };

arch/arm/boot/dts/am335x-pepper.dts

@@ -339,13 +339,6 @@
 	ti,non-removable;
 };
 
-&edma {
-	/* Map eDMA MMC2 Events from Crossbar */
-	ti,edma-xbar-event-map = /bits/ 16 <1 12
-                                            2 13>;
-};
-
-
 &mmc3 {
 	/* Wifi & Bluetooth on MMC #3 */
 	status = "okay";
@@ -354,8 +347,8 @@
 	vmmmc-supply = <&v3v3c_reg>;
 	bus-width = <4>;
 	ti,non-removable;
-	dmas = <&edma 12
-		&edma 13>;
+	dmas = <&edma_xbar 12 0 1
+		&edma_xbar 13 0 2>;
 	dma-names = "tx", "rx";
 };
 

arch/arm/boot/dts/am33xx.dtsi

@@ -174,12 +174,54 @@
 		};
 
 		edma: edma@49000000 {
-			compatible = "ti,edma3";
-			ti,hwmods = "tpcc", "tptc0", "tptc1", "tptc2";
-			reg =	<0x49000000 0x10000>,
-				<0x44e10f90 0x40>;
+			compatible = "ti,edma3-tpcc";
+			ti,hwmods = "tpcc";
+			reg =	<0x49000000 0x10000>;
+			reg-names = "edma3_cc";
 			interrupts = <12 13 14>;
-			#dma-cells = <1>;
+			interrupt-names = "edma3_ccint", "emda3_mperr",
+					  "edma3_ccerrint";
+			dma-requests = <64>;
+			#dma-cells = <2>;
+
+			ti,tptcs = <&edma_tptc0 7>, <&edma_tptc1 5>,
+				   <&edma_tptc2 0>;
+
+			ti,edma-memcpy-channels = /bits/ 16 <20 21>;
+		};
+
+		edma_tptc0: tptc@49800000 {
+			compatible = "ti,edma3-tptc";
+			ti,hwmods = "tptc0";
+			reg =	<0x49800000 0x100000>;
+			interrupts = <112>;
+			interrupt-names = "edma3_tcerrint";
+		};
+
+		edma_tptc1: tptc@49900000 {
+			compatible = "ti,edma3-tptc";
+			ti,hwmods = "tptc1";
+			reg =	<0x49900000 0x100000>;
+			interrupts = <113>;
+			interrupt-names = "edma3_tcerrint";
+		};
+
+		edma_tptc2: tptc@49a00000 {
+			compatible = "ti,edma3-tptc";
+			ti,hwmods = "tptc2";
+			reg =	<0x49a00000 0x100000>;
+			interrupts = <114>;
+			interrupt-names = "edma3_tcerrint";
+		};
+
+		edma_xbar: dma-router@44e10f90 {
+			compatible = "ti,am335x-edma-crossbar";
+			reg = <0x44e10f90 0x40>;
+
+			#dma-cells = <3>;
+			dma-requests = <32>;
+
+			dma-masters = <&edma>;
 		};
 
 		gpio0: gpio@44e07000 {
@@ -233,7 +275,7 @@
 			reg = <0x44e09000 0x2000>;
 			interrupts = <72>;
 			status = "disabled";
-			dmas = <&edma 26>, <&edma 27>;
+			dmas = <&edma 26 0>, <&edma 27 0>;
 			dma-names = "tx", "rx";
 		};
 
@@ -244,7 +286,7 @@
 			reg = <0x48022000 0x2000>;
 			interrupts = <73>;
 			status = "disabled";
-			dmas = <&edma 28>, <&edma 29>;
+			dmas = <&edma 28 0>, <&edma 29 0>;
 			dma-names = "tx", "rx";
 		};
 
@@ -255,7 +297,7 @@
 			reg = <0x48024000 0x2000>;
 			interrupts = <74>;
 			status = "disabled";
-			dmas = <&edma 30>, <&edma 31>;
+			dmas = <&edma 30 0>, <&edma 31 0>;
 			dma-names = "tx", "rx";
 		};
 
@@ -322,8 +364,8 @@
 			ti,dual-volt;
 			ti,needs-special-reset;
 			ti,needs-special-hs-handling;
-			dmas = <&edma 24
-				&edma 25>;
+			dmas = <&edma_xbar 24 0 0
+				&edma_xbar 25 0 0>;
 			dma-names = "tx", "rx";
 			interrupts = <64>;
 			interrupt-parent = <&intc>;
@@ -335,8 +377,8 @@
 			compatible = "ti,omap4-hsmmc";
 			ti,hwmods = "mmc2";
 			ti,needs-special-reset;
-			dmas = <&edma 2
-				&edma 3>;
+			dmas = <&edma 2 0
+				&edma 3 0>;
 			dma-names = "tx", "rx";
 			interrupts = <28>;
 			interrupt-parent = <&intc>;
@@ -474,10 +516,10 @@
 			interrupts = <65>;
 			ti,spi-num-cs = <2>;
 			ti,hwmods = "spi0";
-			dmas = <&edma 16
-				&edma 17
-				&edma 18
-				&edma 19>;
+			dmas = <&edma 16 0
+				&edma 17 0
+				&edma 18 0
+				&edma 19 0>;
 			dma-names = "tx0", "rx0", "tx1", "rx1";
 			status = "disabled";
 		};
@@ -490,10 +532,10 @@
 			interrupts = <125>;
 			ti,spi-num-cs = <2>;
 			ti,hwmods = "spi1";
-			dmas = <&edma 42
-				&edma 43
-				&edma 44
-				&edma 45>;
+			dmas = <&edma 42 0
+				&edma 43 0
+				&edma 44 0
+				&edma 45 0>;
 			dma-names = "tx0", "rx0", "tx1", "rx1";
 			status = "disabled";
 		};
@@ -831,7 +873,7 @@
 			ti,hwmods = "sham";
 			reg = <0x53100000 0x200>;
 			interrupts = <109>;
-			dmas = <&edma 36>;
+			dmas = <&edma 36 0>;
 			dma-names = "rx";
 		};
 
@@ -840,8 +882,8 @@
 			ti,hwmods = "aes";
 			reg = <0x53500000 0xa0>;
 			interrupts = <103>;
-			dmas = <&edma 6>,
-			       <&edma 5>;
+			dmas = <&edma 6 0>,
+			       <&edma 5 0>;
 			dma-names = "tx", "rx";
 		};
 
@@ -854,8 +896,8 @@
 			interrupts = <80>, <81>;
 			interrupt-names = "tx", "rx";
 			status = "disabled";
-			dmas = <&edma 8>,
-				<&edma 9>;
+			dmas = <&edma 8 2>,
+				<&edma 9 2>;
 			dma-names = "tx", "rx";
 		};
 
@@ -868,8 +910,8 @@
 			interrupts = <82>, <83>;
 			interrupt-names = "tx", "rx";
 			status = "disabled";
-			dmas = <&edma 10>,
-				<&edma 11>;
+			dmas = <&edma 10 2>,
+				<&edma 11 2>;
 			dma-names = "tx", "rx";
 		};