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Diffstat (limited to 'arch/arm/plat-mxc/include/mach/dma-mx1-mx2.h')
-rw-r--r--arch/arm/plat-mxc/include/mach/dma-mx1-mx2.h89
1 files changed, 89 insertions, 0 deletions
diff --git a/arch/arm/plat-mxc/include/mach/dma-mx1-mx2.h b/arch/arm/plat-mxc/include/mach/dma-mx1-mx2.h
new file mode 100644
index 00000000000..e85fd946116
--- /dev/null
+++ b/arch/arm/plat-mxc/include/mach/dma-mx1-mx2.h
@@ -0,0 +1,89 @@
+/*
+ * linux/arch/arm/plat-mxc/include/mach/dma-mx1-mx2.h
+ *
+ * i.MX DMA registration and IRQ dispatching
+ *
+ * Copyright 2006 Pavel Pisa <pisa@cmp.felk.cvut.cz>
+ * Copyright 2008 Juergen Beisert, <kernel@pengutronix.de>
+ * Copyright 2008 Sascha Hauer, <s.hauer@pengutronix.de>
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301, USA.
+ */
+
+#include <asm/dma.h>
+
+#ifndef __ASM_ARCH_MXC_DMA_H
+#define __ASM_ARCH_MXC_DMA_H
+
+#define IMX_DMA_CHANNELS 16
+
+#define DMA_BASE IO_ADDRESS(DMA_BASE_ADDR)
+
+#define IMX_DMA_MEMSIZE_32 (0 << 4)
+#define IMX_DMA_MEMSIZE_8 (1 << 4)
+#define IMX_DMA_MEMSIZE_16 (2 << 4)
+#define IMX_DMA_TYPE_LINEAR (0 << 10)
+#define IMX_DMA_TYPE_2D (1 << 10)
+#define IMX_DMA_TYPE_FIFO (2 << 10)
+
+#define IMX_DMA_ERR_BURST (1 << 0)
+#define IMX_DMA_ERR_REQUEST (1 << 1)
+#define IMX_DMA_ERR_TRANSFER (1 << 2)
+#define IMX_DMA_ERR_BUFFER (1 << 3)
+#define IMX_DMA_ERR_TIMEOUT (1 << 4)
+
+int
+imx_dma_config_channel(int channel, unsigned int config_port,
+ unsigned int config_mem, unsigned int dmareq, int hw_chaining);
+
+void
+imx_dma_config_burstlen(int channel, unsigned int burstlen);
+
+int
+imx_dma_setup_single(int channel, dma_addr_t dma_address,
+ unsigned int dma_length, unsigned int dev_addr,
+ dmamode_t dmamode);
+
+int
+imx_dma_setup_sg(int channel, struct scatterlist *sg,
+ unsigned int sgcount, unsigned int dma_length,
+ unsigned int dev_addr, dmamode_t dmamode);
+
+int
+imx_dma_setup_handlers(int channel,
+ void (*irq_handler) (int, void *),
+ void (*err_handler) (int, void *, int), void *data);
+
+int
+imx_dma_setup_progression_handler(int channel,
+ void (*prog_handler) (int, void*, struct scatterlist*));
+
+void imx_dma_enable(int channel);
+
+void imx_dma_disable(int channel);
+
+int imx_dma_request(int channel, const char *name);
+
+void imx_dma_free(int channel);
+
+enum imx_dma_prio {
+ DMA_PRIO_HIGH = 0,
+ DMA_PRIO_MEDIUM = 1,
+ DMA_PRIO_LOW = 2
+};
+
+int imx_dma_request_by_prio(const char *name, enum imx_dma_prio prio);
+
+#endif /* _ASM_ARCH_MXC_DMA_H */