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author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-05-19 18:36:03 (GMT) |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-05-19 18:36:03 (GMT) |
commit | 7c7cbaf5b82c418cd3b1dcf718f71d0e6057e639 (patch) | |
tree | da9aaa5a246af464b1e10d88618c1cad07b76314 /include/linux/sh_dma.h | |
parent | ba0234ec35127fe21d373db53cbaf9fe20620cb6 (diff) | |
parent | 4d0956b8f597aac10208ca763f8fe641fde16aab (diff) | |
download | linux-fsl-qoriq-7c7cbaf5b82c418cd3b1dcf718f71d0e6057e639.tar.xz |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (127 commits)
sh: update defconfigs.
sh: Fix up the NUMA build for recent LMB changes.
sh64: provide a stub per_cpu_trap_init() definition.
sh: fix up CONFIG_KEXEC=n build.
sh: fixup the docbook paths for clock framework shuffling.
driver core: Early dev_name() depends on slab_is_available().
sh: simplify WARN usage in SH clock driver
sh: Check return value of clk_get on ms7724
sh: Check return value of clk_get on ecovec24
sh: move sh clock-cpg.c contents to drivers/sh/clk-cpg.c
sh: move sh clock.c contents to drivers/sh/clk.
sh: move sh asm/clock.h contents to linux/sh_clk.h V2
sh: remove unused clock lookup
sh: switch boards to clkdev
sh: switch sh4-202 to clkdev
sh: switch shx3 to clkdev
sh: switch sh7757 to clkdev
sh: switch sh7763 to clkdev
sh: switch sh7780 to clkdev
sh: switch sh7786 to clkdev
...
Diffstat (limited to 'include/linux/sh_dma.h')
-rw-r--r-- | include/linux/sh_dma.h | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/include/linux/sh_dma.h b/include/linux/sh_dma.h new file mode 100644 index 0000000..b08cd4e --- /dev/null +++ b/include/linux/sh_dma.h @@ -0,0 +1,102 @@ +/* + * 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 SH_DMA_H +#define SH_DMA_H + +#include <linux/list.h> +#include <linux/dmaengine.h> + +/* Used by slave DMA clients to request DMA to/from a specific peripheral */ +struct sh_dmae_slave { + unsigned int slave_id; /* Set by the platform */ + struct device *dma_dev; /* Set by the platform */ + const 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; +}; + +struct sh_dmae_slave_config { + unsigned int 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 { + const struct sh_dmae_slave_config *slave; + int slave_num; + const 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; + const unsigned int *ts_shift; + int ts_shift_num; + u16 dmaor_init; +}; + +/* DMA register */ +#define SAR 0x00 +#define DAR 0x04 +#define TCR 0x08 +#define CHCR 0x0C +#define DMAOR 0x40 + +/* DMAOR definitions */ +#define DMAOR_AE 0x00000004 +#define DMAOR_NMIF 0x00000002 +#define DMAOR_DME 0x00000001 + +/* Definitions for the SuperH DMAC */ +#define REQ_L 0x00000000 +#define REQ_E 0x00080000 +#define RACK_H 0x00000000 +#define RACK_L 0x00040000 +#define ACK_R 0x00000000 +#define ACK_W 0x00020000 +#define ACK_H 0x00000000 +#define ACK_L 0x00010000 +#define DM_INC 0x00004000 +#define DM_DEC 0x00008000 +#define DM_FIX 0x0000c000 +#define SM_INC 0x00001000 +#define SM_DEC 0x00002000 +#define SM_FIX 0x00003000 +#define RS_IN 0x00000200 +#define RS_OUT 0x00000300 +#define TS_BLK 0x00000040 +#define TM_BUR 0x00000020 +#define CHCR_DE 0x00000001 +#define CHCR_TE 0x00000002 +#define CHCR_IE 0x00000004 + +#endif |