ipu-dma.h
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/*
* Copyright (C) 2008
* Guennadi Liakhovetski, DENX Software Engineering, <lg@denx.de>
*
* Copyright (C) 2005-2007 Freescale Semiconductor, Inc.
*
* 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 __LINUX_DMA_IPU_DMA_H
#define __LINUX_DMA_IPU_DMA_H
#include <linux/types.h>
#include <linux/dmaengine.h>
/* IPU DMA Controller channel definitions. */
enum ipu_channel {
IDMAC_IC_0 = 0, /* IC (encoding task) to memory */
IDMAC_IC_1 = 1, /* IC (viewfinder task) to memory */
IDMAC_ADC_0 = 1,
IDMAC_IC_2 = 2,
IDMAC_ADC_1 = 2,
IDMAC_IC_3 = 3,
IDMAC_IC_4 = 4,
IDMAC_IC_5 = 5,
IDMAC_IC_6 = 6,
IDMAC_IC_7 = 7, /* IC (sensor data) to memory */
IDMAC_IC_8 = 8,
IDMAC_IC_9 = 9,
IDMAC_IC_10 = 10,
IDMAC_IC_11 = 11,
IDMAC_IC_12 = 12,
IDMAC_IC_13 = 13,
IDMAC_SDC_0 = 14, /* Background synchronous display data */
IDMAC_SDC_1 = 15, /* Foreground data (overlay) */
IDMAC_SDC_2 = 16,
IDMAC_SDC_3 = 17,
IDMAC_ADC_2 = 18,
IDMAC_ADC_3 = 19,
IDMAC_ADC_4 = 20,
IDMAC_ADC_5 = 21,
IDMAC_ADC_6 = 22,
IDMAC_ADC_7 = 23,
IDMAC_PF_0 = 24,
IDMAC_PF_1 = 25,
IDMAC_PF_2 = 26,
IDMAC_PF_3 = 27,
IDMAC_PF_4 = 28,
IDMAC_PF_5 = 29,
IDMAC_PF_6 = 30,
IDMAC_PF_7 = 31,
};
/* Order significant! */
enum ipu_channel_status {
IPU_CHANNEL_FREE,
IPU_CHANNEL_INITIALIZED,
IPU_CHANNEL_READY,
IPU_CHANNEL_ENABLED,
};
#define IPU_CHANNELS_NUM 32
enum pixel_fmt {
/* 1 byte */
IPU_PIX_FMT_GENERIC,
IPU_PIX_FMT_RGB332,
IPU_PIX_FMT_YUV420P,
IPU_PIX_FMT_YUV422P,
IPU_PIX_FMT_YUV420P2,
IPU_PIX_FMT_YVU422P,
/* 2 bytes */
IPU_PIX_FMT_RGB565,
IPU_PIX_FMT_RGB666,
IPU_PIX_FMT_BGR666,
IPU_PIX_FMT_YUYV,
IPU_PIX_FMT_UYVY,
/* 3 bytes */
IPU_PIX_FMT_RGB24,
IPU_PIX_FMT_BGR24,
/* 4 bytes */
IPU_PIX_FMT_GENERIC_32,
IPU_PIX_FMT_RGB32,
IPU_PIX_FMT_BGR32,
IPU_PIX_FMT_ABGR32,
IPU_PIX_FMT_BGRA32,
IPU_PIX_FMT_RGBA32,
};
enum ipu_color_space {
IPU_COLORSPACE_RGB,
IPU_COLORSPACE_YCBCR,
IPU_COLORSPACE_YUV
};
/*
* Enumeration of IPU rotation modes
*/
enum ipu_rotate_mode {
/* Note the enum values correspond to BAM value */
IPU_ROTATE_NONE = 0,
IPU_ROTATE_VERT_FLIP = 1,
IPU_ROTATE_HORIZ_FLIP = 2,
IPU_ROTATE_180 = 3,
IPU_ROTATE_90_RIGHT = 4,
IPU_ROTATE_90_RIGHT_VFLIP = 5,
IPU_ROTATE_90_RIGHT_HFLIP = 6,
IPU_ROTATE_90_LEFT = 7,
};
/*
* Enumeration of DI ports for ADC.
*/
enum display_port {
DISP0,
DISP1,
DISP2,
DISP3
};
struct idmac_video_param {
unsigned short in_width;
unsigned short in_height;
uint32_t in_pixel_fmt;
unsigned short out_width;
unsigned short out_height;
uint32_t out_pixel_fmt;
unsigned short out_stride;
bool graphics_combine_en;
bool global_alpha_en;
bool key_color_en;
enum display_port disp;
unsigned short out_left;
unsigned short out_top;
};
/*
* Union of initialization parameters for a logical channel. So far only video
* parameters are used.
*/
union ipu_channel_param {
struct idmac_video_param video;
};
struct idmac_tx_desc {
struct dma_async_tx_descriptor txd;
struct scatterlist *sg; /* scatterlist for this */
unsigned int sg_len; /* tx-descriptor. */
struct list_head list;
};
struct idmac_channel {
struct dma_chan dma_chan;
dma_cookie_t completed; /* last completed cookie */
union ipu_channel_param params;
enum ipu_channel link; /* input channel, linked to the output */
enum ipu_channel_status status;
void *client; /* Only one client per channel */
unsigned int n_tx_desc;
struct idmac_tx_desc *desc; /* allocated tx-descriptors */
struct scatterlist *sg[2]; /* scatterlist elements in buffer-0 and -1 */
struct list_head free_list; /* free tx-descriptors */
struct list_head queue; /* queued tx-descriptors */
spinlock_t lock; /* protects sg[0,1], queue */
struct mutex chan_mutex; /* protects status, cookie, free_list */
bool sec_chan_en;
int active_buffer;
unsigned int eof_irq;
char eof_name[16]; /* EOF IRQ name for request_irq() */
};
#define to_tx_desc(tx) container_of(tx, struct idmac_tx_desc, txd)
#define to_idmac_chan(c) container_of(c, struct idmac_channel, dma_chan)
#endif /* __LINUX_DMA_IPU_DMA_H */