omap3: Add DMA driver

index c787408..02eb865 100644
@@ -47,6 +47,9 @@
 #define OMAP34XX_L4_PER			0x49000000
 #define OMAP34XX_L4_IO_BASE		OMAP34XX_CORE_L4_IO_BASE
 
+/* DMA4/SDMA */
+#define OMAP34XX_DMA4_BASE              0x48056000
+
 /* CONTROL */
 #define OMAP34XX_CTRL_BASE		(OMAP34XX_L4_IO_BASE + 0x2000)
 

index 08a725d..2c93e8f 100644
@@ -282,6 +282,51 @@ typedef struct emif4 {
 #define SMART_IDLE		(0x2 << 3)
 #define REF_ON_IDLE		(0x1 << 6)
 
+/* DMA */
+#ifndef __KERNEL_STRICT_NAMES
+#ifndef __ASSEMBLY__
+struct dma4_chan {
+	u32 ccr;
+	u32 clnk_ctrl;
+	u32 cicr;
+	u32 csr;
+	u32 csdp;
+	u32 cen;
+	u32 cfn;
+	u32 cssa;
+	u32 cdsa;
+	u32 csel;
+	u32 csfl;
+	u32 cdel;
+	u32 cdfl;
+	u32 csac;
+	u32 cdac;
+	u32 ccen;
+	u32 ccfn;
+	u32 color;
+};
+
+struct dma4 {
+	u32 revision;
+	u8 res1[0x4];
+	u32 irqstatus_l[0x4];
+	u32 irqenable_l[0x4];
+	u32 sysstatus;
+	u32 ocp_sysconfig;
+	u8 res2[0x34];
+	u32 caps_0;
+	u8 res3[0x4];
+	u32 caps_2;
+	u32 caps_3;
+	u32 caps_4;
+	u32 gcr;
+	u8 res4[0x4];
+	struct dma4_chan chan[32];
+};
+
+#endif /*__ASSEMBLY__ */
+#endif /* __KERNEL_STRICT_NAMES */
+
 /* timer regs offsets (32 bit regs) */
 
 #ifndef __KERNEL_STRICT_NAMES

new file mode 100644
index 0000000..ba5e057
@@ -0,0 +1,77 @@
+#ifndef __SDMA_H
+#define __SDMA_H
+
+/* Copyright (C) 2011
+ * Corscience GmbH & Co. KG - Simon Schwarz <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/* Functions */
+void omap3_dma_init(void);
+int omap3_dma_conf_transfer(uint32_t chan, uint32_t *src, uint32_t *dst,
+		uint32_t sze);
+int omap3_dma_start_transfer(uint32_t chan);
+int omap3_dma_wait_for_transfer(uint32_t chan);
+int omap3_dma_conf_chan(uint32_t chan, struct dma4_chan *config);
+int omap3_dma_get_conf_chan(uint32_t chan, struct dma4_chan *config);
+
+/* Register settings */
+#define CSDP_DATA_TYPE_8BIT             0x0
+#define CSDP_DATA_TYPE_16BIT            0x1
+#define CSDP_DATA_TYPE_32BIT            0x2
+#define CSDP_SRC_BURST_SINGLE           (0x0 << 7)
+#define CSDP_SRC_BURST_EN_16BYTES       (0x1 << 7)
+#define CSDP_SRC_BURST_EN_32BYTES       (0x2 << 7)
+#define CSDP_SRC_BURST_EN_64BYTES       (0x3 << 7)
+#define CSDP_DST_BURST_SINGLE           (0x0 << 14)
+#define CSDP_DST_BURST_EN_16BYTES       (0x1 << 14)
+#define CSDP_DST_BURST_EN_32BYTES       (0x2 << 14)
+#define CSDP_DST_BURST_EN_64BYTES       (0x3 << 14)
+#define CSDP_DST_ENDIAN_LOCK_ADAPT      (0x0 << 18)
+#define CSDP_DST_ENDIAN_LOCK_LOCK       (0x1 << 18)
+#define CSDP_DST_ENDIAN_LITTLE          (0x0 << 19)
+#define CSDP_DST_ENDIAN_BIG             (0x1 << 19)
+#define CSDP_SRC_ENDIAN_LOCK_ADAPT      (0x0 << 20)
+#define CSDP_SRC_ENDIAN_LOCK_LOCK       (0x1 << 20)
+#define CSDP_SRC_ENDIAN_LITTLE          (0x0 << 21)
+#define CSDP_SRC_ENDIAN_BIG             (0x1 << 21)
+
+#define CCR_READ_PRIORITY_LOW           (0x0 << 6)
+#define CCR_READ_PRIORITY_HIGH          (0x1 << 6)
+#define CCR_ENABLE_DISABLED             (0x0 << 7)
+#define CCR_ENABLE_ENABLE               (0x1 << 7)
+#define CCR_SRC_AMODE_CONSTANT          (0x0 << 12)
+#define CCR_SRC_AMODE_POST_INC          (0x1 << 12)
+#define CCR_SRC_AMODE_SINGLE_IDX        (0x2 << 12)
+#define CCR_SRC_AMODE_DOUBLE_IDX        (0x3 << 12)
+#define CCR_DST_AMODE_CONSTANT          (0x0 << 14)
+#define CCR_DST_AMODE_POST_INC          (0x1 << 14)
+#define CCR_DST_AMODE_SINGLE_IDX        (0x2 << 14)
+#define CCR_DST_AMODE_SOUBLE_IDX        (0x3 << 14)
+
+#define CCR_RD_ACTIVE_MASK              (1 << 9)
+#define CCR_WR_ACTIVE_MASK              (1 << 10)
+
+#define CSR_TRANS_ERR			(1 << 8)
+#define CSR_SUPERVISOR_ERR		(1 << 10)
+#define CSR_MISALIGNED_ADRS_ERR		(1 << 11)
+
+/* others */
+#define CHAN_NR_MIN			0
+#define CHAN_NR_MAX			31
+
+#endif /* __SDMA_H */

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