[mirror_ubuntu-artful-kernel.git] / include / linux / platform_data / dma-s3c24xx.h

/*
 * S3C24XX DMA handling
 *
 * Copyright (c) 2013 Heiko Stuebner <heiko@sntech.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.
 */

enum s3c24xx_dma_bus {
	S3C24XX_DMA_APB,
	S3C24XX_DMA_AHB,
};

/**
 * @bus: on which bus does the peripheral reside - AHB or APB.
 * @handshake: is a handshake with the peripheral necessary
 * @chansel: channel selection information, depending on variant; reqsel for
 *	     s3c2443 and later and channel-selection map for earlier SoCs
 *	     see CHANSEL doc in s3c2443-dma.c
 */
struct s3c24xx_dma_channel {
	enum s3c24xx_dma_bus bus;
	bool handshake;
	u16 chansel;
};

/**
 * struct s3c24xx_dma_platdata - platform specific settings
 * @num_phy_channels: number of physical channels
 * @channels: array of virtual channel descriptions
 * @num_channels: number of virtual channels
 */
struct s3c24xx_dma_platdata {
	int num_phy_channels;
	struct s3c24xx_dma_channel *channels;
	int num_channels;
};

struct dma_chan;
bool s3c24xx_dma_filter(struct dma_chan *chan, void *param);
Commit	Line	Data
ddeccb8d HS	1	/*
	2	* S3C24XX DMA handling
	3	*
	4	* Copyright (c) 2013 Heiko Stuebner <heiko@sntech.de>
	5	*
	6	* This program is free software; you can redistribute it and/or modify it
	7	* under the terms of the GNU General Public License as published by the Free
	8	* Software Foundation; either version 2 of the License, or (at your option)
	9	* any later version.
	10	*/
	11
	12	enum s3c24xx_dma_bus {
	13	S3C24XX_DMA_APB,
	14	S3C24XX_DMA_AHB,
	15	};
	16
	17	/**
	18	* @bus: on which bus does the peripheral reside - AHB or APB.
	19	* @handshake: is a handshake with the peripheral necessary
	20	* @chansel: channel selection information, depending on variant; reqsel for
	21	* s3c2443 and later and channel-selection map for earlier SoCs
	22	* see CHANSEL doc in s3c2443-dma.c
	23	*/
	24	struct s3c24xx_dma_channel {
	25	enum s3c24xx_dma_bus bus;
	26	bool handshake;
	27	u16 chansel;
	28	};
	29
	30	/**
	31	* struct s3c24xx_dma_platdata - platform specific settings
	32	* @num_phy_channels: number of physical channels
	33	* @channels: array of virtual channel descriptions
	34	* @num_channels: number of virtual channels
	35	*/
	36	struct s3c24xx_dma_platdata {
	37	int num_phy_channels;
	38	struct s3c24xx_dma_channel *channels;
	39	int num_channels;
	40	};
	41
	42	struct dma_chan;
	43	bool s3c24xx_dma_filter(struct dma_chan chan, void param);