[ARM] 5414/2: ep93xx m2p dma core

Add m2p dma support to the ep93xx
Signed-off-by: Ryan Mallon <ryan@bluewatersys.com>
Acked-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mach-ep93xx/Makefile

 #
 # Makefile for the linux kernel.
 #
-obj-y			:= core.o clock.o gpio.o
+obj-y			:= core.o clock.o dma-m2p.o gpio.o
 obj-m			:=
 obj-n			:=
 obj-			:=

arch/arm/mach-ep93xx/include/mach/dma.h

+#ifndef __ASM_ARCH_DMA_H
+#define __ASM_ARCH_DMA_H
+
+#include <linux/list.h>
+#include <linux/types.h>
+
+struct ep93xx_dma_buffer {
+	struct list_head	list;
+	u32			bus_addr;
+	u16			size;
+};
+
+struct ep93xx_dma_m2p_client {
+	char			*name;
+	u8			flags;
+	void			*cookie;
+	void			(*buffer_started)(void *cookie,
+					struct ep93xx_dma_buffer *buf);
+	void			(*buffer_finished)(void *cookie,
+					struct ep93xx_dma_buffer *buf,
+					int bytes, int error);
+
+	/* Internal to the DMA code.  */
+	void			*channel;
+};
+
+#define EP93XX_DMA_M2P_PORT_I2S1	0x00
+#define EP93XX_DMA_M2P_PORT_I2S2	0x01
+#define EP93XX_DMA_M2P_PORT_AAC1	0x02
+#define EP93XX_DMA_M2P_PORT_AAC2	0x03
+#define EP93XX_DMA_M2P_PORT_AAC3	0x04
+#define EP93XX_DMA_M2P_PORT_I2S3	0x05
+#define EP93XX_DMA_M2P_PORT_UART1	0x06
+#define EP93XX_DMA_M2P_PORT_UART2	0x07
+#define EP93XX_DMA_M2P_PORT_UART3	0x08
+#define EP93XX_DMA_M2P_PORT_IRDA	0x09
+#define EP93XX_DMA_M2P_PORT_MASK	0x0f
+#define EP93XX_DMA_M2P_TX		0x00
+#define EP93XX_DMA_M2P_RX		0x10
+#define EP93XX_DMA_M2P_ABORT_ON_ERROR	0x20
+#define EP93XX_DMA_M2P_IGNORE_ERROR	0x40
+#define EP93XX_DMA_M2P_ERROR_MASK	0x60
+
+int  ep93xx_dma_m2p_client_register(struct ep93xx_dma_m2p_client *m2p);
+void ep93xx_dma_m2p_client_unregister(struct ep93xx_dma_m2p_client *m2p);
+void ep93xx_dma_m2p_submit(struct ep93xx_dma_m2p_client *m2p,
+			   struct ep93xx_dma_buffer *buf);
+void ep93xx_dma_m2p_submit_recursive(struct ep93xx_dma_m2p_client *m2p,
+				     struct ep93xx_dma_buffer *buf);
+void ep93xx_dma_m2p_flush(struct ep93xx_dma_m2p_client *m2p);
+
+#endif /* __ASM_ARCH_DMA_H */

arch/arm/mach-ep93xx/include/mach/ep93xx-regs.h

@@ -58,7 +58,8 @@
 
 
 /* AHB peripherals */
-#define EP93XX_DMA_BASE			(EP93XX_AHB_VIRT_BASE + 0x00000000)
+#define EP93XX_DMA_BASE			((void __iomem *)		\
+					 (EP93XX_AHB_VIRT_BASE + 0x00000000))
 
 #define EP93XX_ETHERNET_BASE		(EP93XX_AHB_VIRT_BASE + 0x00010000)
 #define EP93XX_ETHERNET_PHYS_BASE	(EP93XX_AHB_PHYS_BASE + 0x00010000)