1 files changed, 127 insertions, 0 deletions

diff --git a/arch/arm/mach-s3c64xx/include/mach/dma.h b/arch/arm/mach-s3c64xx/include/mach/dma.h
new file mode 100644
index 00000000000..0a5d9268a23
--- /dev/null
+++ b/arch/arm/mach-s3c64xx/include/mach/dma.h
@@ -0,0 +1,127 @@
+/* linux/arch/arm/mach-s3c6400/include/mach/dma.h
+ *
+ * Copyright 2008 Openmoko, Inc.
+ * Copyright 2008 Simtec Electronics
+ *      Ben Dooks <ben@simtec.co.uk>
+ *      http://armlinux.simtec.co.uk/
+ *
+ * S3C6400 - DMA support
+ */
+
+#ifndef __ASM_ARCH_DMA_H
+#define __ASM_ARCH_DMA_H __FILE__
+
+#define S3C_DMA_CHANNELS        (16)
+
+/* see mach-s3c2410/dma.h for notes on dma channel numbers */
+
+/* Note, for the S3C64XX architecture we keep the DMACH_
+ * defines in the order they are allocated to [S]DMA0/[S]DMA1
+ * so that is easy to do DHACH_ -> DMA controller conversion
+ */
+enum dma_ch {
+        /* DMA0/SDMA0 */
+        DMACH_UART0 = 0,
+        DMACH_UART0_SRC2,
+        DMACH_UART1,
+        DMACH_UART1_SRC2,
+        DMACH_UART2,
+        DMACH_UART2_SRC2,
+        DMACH_UART3,
+        DMACH_UART3_SRC2,
+        DMACH_PCM0_TX,
+        DMACH_PCM0_RX,
+        DMACH_I2S0_OUT,
+        DMACH_I2S0_IN,
+        DMACH_SPI0_TX,
+        DMACH_SPI0_RX,
+        DMACH_HSI_I2SV40_TX,
+        DMACH_HSI_I2SV40_RX,
+
+        /* DMA1/SDMA1 */
+        DMACH_PCM1_TX = 16,
+        DMACH_PCM1_RX,
+        DMACH_I2S1_OUT,
+        DMACH_I2S1_IN,
+        DMACH_SPI1_TX,
+        DMACH_SPI1_RX,
+        DMACH_AC97_PCMOUT,
+        DMACH_AC97_PCMIN,
+        DMACH_AC97_MICIN,
+        DMACH_PWM,
+        DMACH_IRDA,
+        DMACH_EXTERNAL,
+        DMACH_RES1,
+        DMACH_RES2,
+        DMACH_SECURITY_RX,      /* SDMA1 only */
+        DMACH_SECURITY_TX,      /* SDMA1 only */
+        DMACH_MAX               /* the end */
+};
+
+static __inline__ bool s3c_dma_has_circular(void)
+{
+        return true;
+}
+
+#define S3C2410_DMAF_CIRCULAR           (1 << 0)
+
+#include <plat/dma.h>
+
+#define DMACH_LOW_LEVEL (1<<28) /* use this to specifiy hardware ch no */
+
+struct s3c64xx_dma_buff;
+
+/** s3c64xx_dma_buff - S3C64XX DMA buffer descriptor
+ * @next: Pointer to next buffer in queue or ring.
+ * @pw: Client provided identifier
+ * @lli: Pointer to hardware descriptor this buffer is associated with.
+ * @lli_dma: Hardare address of the descriptor.
+ */
+struct s3c64xx_dma_buff {
+        struct s3c64xx_dma_buff *next;
+
+        void                    *pw;
+        struct pl080s_lli       *lli;
+        dma_addr_t               lli_dma;
+};
+
+struct s3c64xx_dmac;
+
+struct s3c2410_dma_chan {
+        unsigned char            number;      /* number of this dma channel */
+        unsigned char            in_use;      /* channel allocated */
+        unsigned char            bit;         /* bit for enable/disable/etc */
+        unsigned char            hw_width;
+        unsigned char            peripheral;
+
+        unsigned int             flags;
+        enum s3c2410_dmasrc      source;
+
+
+        dma_addr_t              dev_addr;
+
+        struct s3c2410_dma_client *client;
+        struct s3c64xx_dmac     *dmac;          /* pointer to controller */
+
+        void __iomem            *regs;
+
+        /* cdriver callbacks */
+        s3c2410_dma_cbfn_t       callback_fn;   /* buffer done callback */
+        s3c2410_dma_opfn_t       op_fn;         /* channel op callback */
+
+        /* buffer list and information */
+        struct s3c64xx_dma_buff *curr;          /* current dma buffer */
+        struct s3c64xx_dma_buff *next;          /* next buffer to load */
+        struct s3c64xx_dma_buff *end;           /* end of queue */
+
+        /* note, when channel is running in circular mode, curr is the
+         * first buffer enqueued, end is the last and curr is where the
+         * last buffer-done event is set-at. The buffers are not freed
+         * and the last buffer hardware descriptor points back to the
+         * first.
+         */
+};
+
+#include <plat/dma-core.h>
+
+#endif /* __ASM_ARCH_IRQ_H */