kernel/include/linux/dma/ipu-dma.h

   1 /*
   2  * Copyright (C) 2008
   3  * Guennadi Liakhovetski, DENX Software Engineering, <lg@denx.de>
   4  *
   5  * Copyright (C) 2005-2007 Freescale Semiconductor, Inc.
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  */
  11
  12 #ifndef __LINUX_DMA_IPU_DMA_H
  13 #define __LINUX_DMA_IPU_DMA_H
  14
  15 #include <linux/types.h>
  16 #include <linux/dmaengine.h>
  17
  18 /* IPU DMA Controller channel definitions. */
  19 enum ipu_channel {
  20         IDMAC_IC_0 = 0,         /* IC (encoding task) to memory */
  21         IDMAC_IC_1 = 1,         /* IC (viewfinder task) to memory */
  22         IDMAC_ADC_0 = 1,
  23         IDMAC_IC_2 = 2,
  24         IDMAC_ADC_1 = 2,
  25         IDMAC_IC_3 = 3,
  26         IDMAC_IC_4 = 4,
  27         IDMAC_IC_5 = 5,
  28         IDMAC_IC_6 = 6,
  29         IDMAC_IC_7 = 7,         /* IC (sensor data) to memory */
  30         IDMAC_IC_8 = 8,
  31         IDMAC_IC_9 = 9,
  32         IDMAC_IC_10 = 10,
  33         IDMAC_IC_11 = 11,
  34         IDMAC_IC_12 = 12,
  35         IDMAC_IC_13 = 13,
  36         IDMAC_SDC_0 = 14,       /* Background synchronous display data */
  37         IDMAC_SDC_1 = 15,       /* Foreground data (overlay) */
  38         IDMAC_SDC_2 = 16,
  39         IDMAC_SDC_3 = 17,
  40         IDMAC_ADC_2 = 18,
  41         IDMAC_ADC_3 = 19,
  42         IDMAC_ADC_4 = 20,
  43         IDMAC_ADC_5 = 21,
  44         IDMAC_ADC_6 = 22,
  45         IDMAC_ADC_7 = 23,
  46         IDMAC_PF_0 = 24,
  47         IDMAC_PF_1 = 25,
  48         IDMAC_PF_2 = 26,
  49         IDMAC_PF_3 = 27,
  50         IDMAC_PF_4 = 28,
  51         IDMAC_PF_5 = 29,
  52         IDMAC_PF_6 = 30,
  53         IDMAC_PF_7 = 31,
  54 };
  55
  56 /* Order significant! */
  57 enum ipu_channel_status {
  58         IPU_CHANNEL_FREE,
  59         IPU_CHANNEL_INITIALIZED,
  60         IPU_CHANNEL_READY,
  61         IPU_CHANNEL_ENABLED,
  62 };
  63
  64 #define IPU_CHANNELS_NUM 32
  65
  66 enum pixel_fmt {
  67         /* 1 byte */
  68         IPU_PIX_FMT_GENERIC,
  69         IPU_PIX_FMT_RGB332,
  70         IPU_PIX_FMT_YUV420P,
  71         IPU_PIX_FMT_YUV422P,
  72         IPU_PIX_FMT_YUV420P2,
  73         IPU_PIX_FMT_YVU422P,
  74         /* 2 bytes */
  75         IPU_PIX_FMT_RGB565,
  76         IPU_PIX_FMT_RGB666,
  77         IPU_PIX_FMT_BGR666,
  78         IPU_PIX_FMT_YUYV,
  79         IPU_PIX_FMT_UYVY,
  80         /* 3 bytes */
  81         IPU_PIX_FMT_RGB24,
  82         IPU_PIX_FMT_BGR24,
  83         /* 4 bytes */
  84         IPU_PIX_FMT_GENERIC_32,
  85         IPU_PIX_FMT_RGB32,
  86         IPU_PIX_FMT_BGR32,
  87         IPU_PIX_FMT_ABGR32,
  88         IPU_PIX_FMT_BGRA32,
  89         IPU_PIX_FMT_RGBA32,
  90 };
  91
  92 enum ipu_color_space {
  93         IPU_COLORSPACE_RGB,
  94         IPU_COLORSPACE_YCBCR,
  95         IPU_COLORSPACE_YUV
  96 };
  97
  98 /*
  99  * Enumeration of IPU rotation modes
 100  */
 101 enum ipu_rotate_mode {
 102         /* Note the enum values correspond to BAM value */
 103         IPU_ROTATE_NONE = 0,
 104         IPU_ROTATE_VERT_FLIP = 1,
 105         IPU_ROTATE_HORIZ_FLIP = 2,
 106         IPU_ROTATE_180 = 3,
 107         IPU_ROTATE_90_RIGHT = 4,
 108         IPU_ROTATE_90_RIGHT_VFLIP = 5,
 109         IPU_ROTATE_90_RIGHT_HFLIP = 6,
 110         IPU_ROTATE_90_LEFT = 7,
 111 };
 112
 113 /*
 114  * Enumeration of DI ports for ADC.
 115  */
 116 enum display_port {
 117         DISP0,
 118         DISP1,
 119         DISP2,
 120         DISP3
 121 };
 122
 123 struct idmac_video_param {
 124         unsigned short          in_width;
 125         unsigned short          in_height;
 126         uint32_t                in_pixel_fmt;
 127         unsigned short          out_width;
 128         unsigned short          out_height;
 129         uint32_t                out_pixel_fmt;
 130         unsigned short          out_stride;
 131         bool                    graphics_combine_en;
 132         bool                    global_alpha_en;
 133         bool                    key_color_en;
 134         enum display_port       disp;
 135         unsigned short          out_left;
 136         unsigned short          out_top;
 137 };
 138
 139 /*
 140  * Union of initialization parameters for a logical channel. So far only video
 141  * parameters are used.
 142  */
 143 union ipu_channel_param {
 144         struct idmac_video_param video;
 145 };
 146
 147 struct idmac_tx_desc {
 148         struct dma_async_tx_descriptor  txd;
 149         struct scatterlist              *sg;    /* scatterlist for this */
 150         unsigned int                    sg_len; /* tx-descriptor. */
 151         struct list_head                list;
 152 };
 153
 154 struct idmac_channel {
 155         struct dma_chan         dma_chan;
 156         dma_cookie_t            completed;      /* last completed cookie           */
 157         union ipu_channel_param params;
 158         enum ipu_channel        link;   /* input channel, linked to the output     */
 159         enum ipu_channel_status status;
 160         void                    *client;        /* Only one client per channel     */
 161         unsigned int            n_tx_desc;
 162         struct idmac_tx_desc    *desc;          /* allocated tx-descriptors        */
 163         struct scatterlist      *sg[2]; /* scatterlist elements in buffer-0 and -1 */
 164         struct list_head        free_list;      /* free tx-descriptors             */
 165         struct list_head        queue;          /* queued tx-descriptors           */
 166         spinlock_t              lock;           /* protects sg[0,1], queue         */
 167         struct mutex            chan_mutex; /* protects status, cookie, free_list  */
 168         bool                    sec_chan_en;
 169         int                     active_buffer;
 170         unsigned int            eof_irq;
 171         char                    eof_name[16];   /* EOF IRQ name for request_irq()  */
 172 };
 173
 174 #define to_tx_desc(tx) container_of(tx, struct idmac_tx_desc, txd)
 175 #define to_idmac_chan(c) container_of(c, struct idmac_channel, dma_chan)
 176
 177 #endif /* __LINUX_DMA_IPU_DMA_H */