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authorRussell King <rmk+kernel@arm.linux.org.uk>2010-03-08 23:21:04 +0300
committerRussell King <rmk+kernel@arm.linux.org.uk>2010-03-08 23:21:04 +0300
commit988addf82e4c03739375279de73929580a2d4a6a (patch)
tree989ae1cd4e264bbad80c65f04480486246e7b9f3 /arch/sh/include/asm/dmaengine.h
parent004c1c7096659d352b83047a7593e91d8a30e3c5 (diff)
parent25cf84cf377c0aae5dbcf937ea89bc7893db5176 (diff)
downloadlinux-988addf82e4c03739375279de73929580a2d4a6a.tar.xz
Merge branch 'origin' into devel-stable
Conflicts: arch/arm/mach-mx2/devices.c arch/arm/mach-mx2/devices.h sound/soc/pxa/pxa-ssp.c
Diffstat (limited to 'arch/sh/include/asm/dmaengine.h')
-rw-r--r--arch/sh/include/asm/dmaengine.h93
1 files changed, 93 insertions, 0 deletions
diff --git a/arch/sh/include/asm/dmaengine.h b/arch/sh/include/asm/dmaengine.h
new file mode 100644
index 000000000000..bf2f30cf0a27
--- /dev/null
+++ b/arch/sh/include/asm/dmaengine.h
@@ -0,0 +1,93 @@
+/*
+ * Header for the new SH dmaengine driver
+ *
+ * Copyright (C) 2010 Guennadi Liakhovetski <g.liakhovetski@gmx.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef ASM_DMAENGINE_H
+#define ASM_DMAENGINE_H
+
+#include <linux/dmaengine.h>
+#include <linux/list.h>
+
+#include <asm/dma-register.h>
+
+#define SH_DMAC_MAX_CHANNELS 6
+
+enum sh_dmae_slave_chan_id {
+ SHDMA_SLAVE_SCIF0_TX,
+ SHDMA_SLAVE_SCIF0_RX,
+ SHDMA_SLAVE_SCIF1_TX,
+ SHDMA_SLAVE_SCIF1_RX,
+ SHDMA_SLAVE_SCIF2_TX,
+ SHDMA_SLAVE_SCIF2_RX,
+ SHDMA_SLAVE_SCIF3_TX,
+ SHDMA_SLAVE_SCIF3_RX,
+ SHDMA_SLAVE_SCIF4_TX,
+ SHDMA_SLAVE_SCIF4_RX,
+ SHDMA_SLAVE_SCIF5_TX,
+ SHDMA_SLAVE_SCIF5_RX,
+ SHDMA_SLAVE_SIUA_TX,
+ SHDMA_SLAVE_SIUA_RX,
+ SHDMA_SLAVE_SIUB_TX,
+ SHDMA_SLAVE_SIUB_RX,
+ SHDMA_SLAVE_NUMBER, /* Must stay last */
+};
+
+struct sh_dmae_slave_config {
+ enum sh_dmae_slave_chan_id slave_id;
+ dma_addr_t addr;
+ u32 chcr;
+ char mid_rid;
+};
+
+struct sh_dmae_channel {
+ unsigned int offset;
+ unsigned int dmars;
+ unsigned int dmars_bit;
+};
+
+struct sh_dmae_pdata {
+ struct sh_dmae_slave_config *slave;
+ int slave_num;
+ struct sh_dmae_channel *channel;
+ int channel_num;
+ unsigned int ts_low_shift;
+ unsigned int ts_low_mask;
+ unsigned int ts_high_shift;
+ unsigned int ts_high_mask;
+ unsigned int *ts_shift;
+ int ts_shift_num;
+ u16 dmaor_init;
+};
+
+struct device;
+
+/* Used by slave DMA clients to request DMA to/from a specific peripheral */
+struct sh_dmae_slave {
+ enum sh_dmae_slave_chan_id slave_id; /* Set by the platform */
+ struct device *dma_dev; /* Set by the platform */
+ struct sh_dmae_slave_config *config; /* Set by the driver */
+};
+
+struct sh_dmae_regs {
+ u32 sar; /* SAR / source address */
+ u32 dar; /* DAR / destination address */
+ u32 tcr; /* TCR / transfer count */
+};
+
+struct sh_desc {
+ struct sh_dmae_regs hw;
+ struct list_head node;
+ struct dma_async_tx_descriptor async_tx;
+ enum dma_data_direction direction;
+ dma_cookie_t cookie;
+ size_t partial;
+ int chunks;
+ int mark;
+};
+
+#endif