include/linux/dma/ipu-dma.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Copyright (C) 2008
   4  * Guennadi Liakhovetski, DENX Software Engineering, <[email protected]>
   5  *
   6  * Copyright (C) 2005-2007 Freescale Semiconductor, Inc.
   7  */
   8
   9 #ifndef __LINUX_DMA_IPU_DMA_H
  10 #define __LINUX_DMA_IPU_DMA_H
  11
  12 #include <linux/types.h>
  13 #include <linux/dmaengine.h>
  14
  15 /* IPU DMA Controller channel definitions. */
  16 enum ipu_channel {
  17         IDMAC_IC_0 = 0,         /* IC (encoding task) to memory */
  18         IDMAC_IC_1 = 1,         /* IC (viewfinder task) to memory */
  19         IDMAC_ADC_0 = 1,
  20         IDMAC_IC_2 = 2,
  21         IDMAC_ADC_1 = 2,
  22         IDMAC_IC_3 = 3,
  23         IDMAC_IC_4 = 4,
  24         IDMAC_IC_5 = 5,
  25         IDMAC_IC_6 = 6,
  26         IDMAC_IC_7 = 7,         /* IC (sensor data) to memory */
  27         IDMAC_IC_8 = 8,
  28         IDMAC_IC_9 = 9,
  29         IDMAC_IC_10 = 10,
  30         IDMAC_IC_11 = 11,
  31         IDMAC_IC_12 = 12,
  32         IDMAC_IC_13 = 13,
  33         IDMAC_SDC_0 = 14,       /* Background synchronous display data */
  34         IDMAC_SDC_1 = 15,       /* Foreground data (overlay) */
  35         IDMAC_SDC_2 = 16,
  36         IDMAC_SDC_3 = 17,
  37         IDMAC_ADC_2 = 18,
  38         IDMAC_ADC_3 = 19,
  39         IDMAC_ADC_4 = 20,
  40         IDMAC_ADC_5 = 21,
  41         IDMAC_ADC_6 = 22,
  42         IDMAC_ADC_7 = 23,
  43         IDMAC_PF_0 = 24,
  44         IDMAC_PF_1 = 25,
  45         IDMAC_PF_2 = 26,
  46         IDMAC_PF_3 = 27,
  47         IDMAC_PF_4 = 28,
  48         IDMAC_PF_5 = 29,
  49         IDMAC_PF_6 = 30,
  50         IDMAC_PF_7 = 31,
  51 };
  52
  53 /* Order significant! */
  54 enum ipu_channel_status {
  55         IPU_CHANNEL_FREE,
  56         IPU_CHANNEL_INITIALIZED,
  57         IPU_CHANNEL_READY,
  58         IPU_CHANNEL_ENABLED,
  59 };
  60
  61 #define IPU_CHANNELS_NUM 32
  62
  63 enum pixel_fmt {
  64         /* 1 byte */
  65         IPU_PIX_FMT_GENERIC,
  66         IPU_PIX_FMT_RGB332,
  67         IPU_PIX_FMT_YUV420P,
  68         IPU_PIX_FMT_YUV422P,
  69         IPU_PIX_FMT_YUV420P2,
  70         IPU_PIX_FMT_YVU422P,
  71         /* 2 bytes */
  72         IPU_PIX_FMT_RGB565,
  73         IPU_PIX_FMT_RGB666,
  74         IPU_PIX_FMT_BGR666,
  75         IPU_PIX_FMT_YUYV,
  76         IPU_PIX_FMT_UYVY,
  77         /* 3 bytes */
  78         IPU_PIX_FMT_RGB24,
  79         IPU_PIX_FMT_BGR24,
  80         /* 4 bytes */
  81         IPU_PIX_FMT_GENERIC_32,
  82         IPU_PIX_FMT_RGB32,
  83         IPU_PIX_FMT_BGR32,
  84         IPU_PIX_FMT_ABGR32,
  85         IPU_PIX_FMT_BGRA32,
  86         IPU_PIX_FMT_RGBA32,
  87 };
  88
  89 enum ipu_color_space {
  90         IPU_COLORSPACE_RGB,
  91         IPU_COLORSPACE_YCBCR,
  92         IPU_COLORSPACE_YUV
  93 };
  94
  95 /*
  96  * Enumeration of IPU rotation modes
  97  */
  98 enum ipu_rotate_mode {
  99         /* Note the enum values correspond to BAM value */
 100         IPU_ROTATE_NONE = 0,
 101         IPU_ROTATE_VERT_FLIP = 1,
 102         IPU_ROTATE_HORIZ_FLIP = 2,
 103         IPU_ROTATE_180 = 3,
 104         IPU_ROTATE_90_RIGHT = 4,
 105         IPU_ROTATE_90_RIGHT_VFLIP = 5,
 106         IPU_ROTATE_90_RIGHT_HFLIP = 6,
 107         IPU_ROTATE_90_LEFT = 7,
 108 };
 109
 110 /*
 111  * Enumeration of DI ports for ADC.
 112  */
 113 enum display_port {
 114         DISP0,
 115         DISP1,
 116         DISP2,
 117         DISP3
 118 };
 119
 120 struct idmac_video_param {
 121         unsigned short          in_width;
 122         unsigned short          in_height;
 123         uint32_t                in_pixel_fmt;
 124         unsigned short          out_width;
 125         unsigned short          out_height;
 126         uint32_t                out_pixel_fmt;
 127         unsigned short          out_stride;
 128         bool                    graphics_combine_en;
 129         bool                    global_alpha_en;
 130         bool                    key_color_en;
 131         enum display_port       disp;
 132         unsigned short          out_left;
 133         unsigned short          out_top;
 134 };
 135
 136 /*
 137  * Union of initialization parameters for a logical channel. So far only video
 138  * parameters are used.
 139  */
 140 union ipu_channel_param {
 141         struct idmac_video_param video;
 142 };
 143
 144 struct idmac_tx_desc {
 145         struct dma_async_tx_descriptor  txd;
 146         struct scatterlist              *sg;    /* scatterlist for this */
 147         unsigned int                    sg_len; /* tx-descriptor. */
 148         struct list_head                list;
 149 };
 150
 151 struct idmac_channel {
 152         struct dma_chan         dma_chan;
 153         dma_cookie_t            completed;      /* last completed cookie           */
 154         union ipu_channel_param params;
 155         enum ipu_channel        link;   /* input channel, linked to the output     */
 156         enum ipu_channel_status status;
 157         void                    *client;        /* Only one client per channel     */
 158         unsigned int            n_tx_desc;
 159         struct idmac_tx_desc    *desc;          /* allocated tx-descriptors        */
 160         struct scatterlist      *sg[2]; /* scatterlist elements in buffer-0 and -1 */
 161         struct list_head        free_list;      /* free tx-descriptors             */
 162         struct list_head        queue;          /* queued tx-descriptors           */
 163         spinlock_t              lock;           /* protects sg[0,1], queue         */
 164         struct mutex            chan_mutex; /* protects status, cookie, free_list  */
 165         bool                    sec_chan_en;
 166         int                     active_buffer;
 167         unsigned int            eof_irq;
 168         char                    eof_name[16];   /* EOF IRQ name for request_irq()  */
 169 };
 170
 171 #define to_tx_desc(tx) container_of(tx, struct idmac_tx_desc, txd)
 172 #define to_idmac_chan(c) container_of(c, struct idmac_channel, dma_chan)
 173
 174 #endif /* __LINUX_DMA_IPU_DMA_H */