diff options
author | Atsushi Nemoto <anemo@mba.ocn.ne.jp> | 2009-04-22 15:40:30 (GMT) |
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committer | Ralf Baechle <ralf@linux-mips.org> | 2009-06-17 10:06:25 (GMT) |
commit | ea76f0b3759283ec3cc06c86e266bf0fa6a981d2 (patch) | |
tree | 36719ab69e7d94cc59c909526022219376807313 /arch/mips/include/asm/txx9 | |
parent | a43da03ca4719276b9601730627d20b2a71fb6ba (diff) | |
download | linux-fsl-qoriq-ea76f0b3759283ec3cc06c86e266bf0fa6a981d2.tar.xz |
DMA: TXx9 Soc DMA Controller driver
This patch adds support for the integrated DMAC of the TXx9 family.
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Acked-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/include/asm/txx9')
-rw-r--r-- | arch/mips/include/asm/txx9/dmac.h | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/arch/mips/include/asm/txx9/dmac.h b/arch/mips/include/asm/txx9/dmac.h new file mode 100644 index 0000000..a87d1c3 --- /dev/null +++ b/arch/mips/include/asm/txx9/dmac.h @@ -0,0 +1,48 @@ +/* + * TXx9 SoC DMA Controller + * + * 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_TXX9_DMAC_H +#define __ASM_TXX9_DMAC_H + +#include <linux/dmaengine.h> + +#define TXX9_DMA_MAX_NR_CHANNELS 4 + +/** + * struct txx9dmac_platform_data - Controller configuration parameters + * @memcpy_chan: Channel used for DMA_MEMCPY + * @have_64bit_regs: DMAC have 64 bit registers + */ +struct txx9dmac_platform_data { + int memcpy_chan; + bool have_64bit_regs; +}; + +/** + * struct txx9dmac_chan_platform_data - Channel configuration parameters + * @dmac_dev: A platform device for DMAC + */ +struct txx9dmac_chan_platform_data { + struct platform_device *dmac_dev; +}; + +/** + * struct txx9dmac_slave - Controller-specific information about a slave + * @tx_reg: physical address of data register used for + * memory-to-peripheral transfers + * @rx_reg: physical address of data register used for + * peripheral-to-memory transfers + * @reg_width: peripheral register width + */ +struct txx9dmac_slave { + u64 tx_reg; + u64 rx_reg; + unsigned int reg_width; +}; + +#endif /* __ASM_TXX9_DMAC_H */ |