[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>

2 files changed, 54 insertions, 1 deletions

diff --git a/arch/arm/mach-ep93xx/include/mach/dma.h b/arch/arm/mach-ep93xx/include/mach/dma.h
new file mode 100644
index 000000000000..ef6bd9d13148
--- /dev/null
+++ b/arch/arm/mach-ep93xx/include/mach/dma.h
@@ -0,0 +1,52 @@
+#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 */
diff --git a/arch/arm/mach-ep93xx/include/mach/ep93xx-regs.h b/arch/arm/mach-ep93xx/include/mach/ep93xx-regs.h
index 22d6c9a6e4ca..f66be12b856e 100644
--- a/arch/arm/mach-ep93xx/include/mach/ep93xx-regs.h
+++ b/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)