DMA: TXx9 Soc DMA Controller driver

/*

 * 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 */

	  To avoid bloating the irq_desc[] array we allocate a sufficient

	  number of IRQ slots and map them dynamically to specific sources.

config TXX9_DMAC

	tristate "Toshiba TXx9 SoC DMA support"

	depends on MACH_TX49XX || MACH_TX39XX

	select DMA_ENGINE

	help

	  Support the TXx9 SoC internal DMA controller.  This can be

	  integrated in chips such as the Toshiba TX4927/38/39.

config DMA_ENGINE

	bool

obj-$(CONFIG_MV_XOR) += mv_xor.o

obj-$(CONFIG_DW_DMAC) += dw_dmac.o

obj-$(CONFIG_MX3_IPU) += ipu/

obj-$(CONFIG_TXX9_DMAC) += txx9dmac.o