drivers/media/platform/omap3isp/isppreview.h

   1 /*
   2  * isppreview.h
   3  *
   4  * TI OMAP3 ISP - Preview module
   5  *
   6  * Copyright (C) 2010 Nokia Corporation
   7  * Copyright (C) 2009 Texas Instruments, Inc.
   8  *
   9  * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
  10  *           Sakari Ailus <sakari.ailus@iki.fi>
  11  *
  12  * This program is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU General Public License version 2 as
  14  * published by the Free Software Foundation.
  15  */
  16
  17 #ifndef OMAP3_ISP_PREVIEW_H
  18 #define OMAP3_ISP_PREVIEW_H
  19
  20 #include <linux/omap3isp.h>
  21 #include <linux/types.h>
  22 #include <media/v4l2-ctrls.h>
  23
  24 #include "ispvideo.h"
  25
  26 #define ISPPRV_BRIGHT_STEP              0x1
  27 #define ISPPRV_BRIGHT_DEF               0x0
  28 #define ISPPRV_BRIGHT_LOW               0x0
  29 #define ISPPRV_BRIGHT_HIGH              0xFF
  30 #define ISPPRV_BRIGHT_UNITS             0x1
  31
  32 #define ISPPRV_CONTRAST_STEP            0x1
  33 #define ISPPRV_CONTRAST_DEF             0x10
  34 #define ISPPRV_CONTRAST_LOW             0x0
  35 #define ISPPRV_CONTRAST_HIGH            0xFF
  36 #define ISPPRV_CONTRAST_UNITS           0x1
  37
  38 /* Additional features not listed in linux/omap3isp.h */
  39 #define OMAP3ISP_PREV_CONTRAST          (1 << 17)
  40 #define OMAP3ISP_PREV_BRIGHTNESS        (1 << 18)
  41 #define OMAP3ISP_PREV_FEATURES_END      (1 << 19)
  42
  43 enum preview_input_entity {
  44         PREVIEW_INPUT_NONE,
  45         PREVIEW_INPUT_CCDC,
  46         PREVIEW_INPUT_MEMORY,
  47 };
  48
  49 #define PREVIEW_OUTPUT_RESIZER          (1 << 1)
  50 #define PREVIEW_OUTPUT_MEMORY           (1 << 2)
  51
  52 /* Configure byte layout of YUV image */
  53 enum preview_ycpos_mode {
  54         YCPOS_YCrYCb = 0,
  55         YCPOS_YCbYCr = 1,
  56         YCPOS_CbYCrY = 2,
  57         YCPOS_CrYCbY = 3
  58 };
  59
  60 /*
  61  * struct prev_params - Structure for all configuration
  62  * @busy: Bitmask of busy parameters (being updated or used)
  63  * @update: Bitmask of the parameters to be updated
  64  * @features: Set of features enabled.
  65  * @cfa: CFA coefficients.
  66  * @csup: Chroma suppression coefficients.
  67  * @luma: Luma enhancement coefficients.
  68  * @nf: Noise filter coefficients.
  69  * @dcor: Noise filter coefficients.
  70  * @gamma: Gamma coefficients.
  71  * @wbal: White Balance parameters.
  72  * @blkadj: Black adjustment parameters.
  73  * @rgb2rgb: RGB blending parameters.
  74  * @csc: Color space conversion (RGB to YCbCr) parameters.
  75  * @hmed: Horizontal median filter.
  76  * @yclimit: YC limits parameters.
  77  * @contrast: Contrast.
  78  * @brightness: Brightness.
  79  */
  80 struct prev_params {
  81         u32 busy;
  82         u32 update;
  83         u32 features;
  84         struct omap3isp_prev_cfa cfa;
  85         struct omap3isp_prev_csup csup;
  86         struct omap3isp_prev_luma luma;
  87         struct omap3isp_prev_nf nf;
  88         struct omap3isp_prev_dcor dcor;
  89         struct omap3isp_prev_gtables gamma;
  90         struct omap3isp_prev_wbal wbal;
  91         struct omap3isp_prev_blkadj blkadj;
  92         struct omap3isp_prev_rgbtorgb rgb2rgb;
  93         struct omap3isp_prev_csc csc;
  94         struct omap3isp_prev_hmed hmed;
  95         struct omap3isp_prev_yclimit yclimit;
  96         u8 contrast;
  97         u8 brightness;
  98 };
  99
 100 /* Sink and source previewer pads */
 101 #define PREV_PAD_SINK                   0
 102 #define PREV_PAD_SOURCE                 1
 103 #define PREV_PADS_NUM                   2
 104
 105 /*
 106  * struct isp_prev_device - Structure for storing ISP Preview module information
 107  * @subdev: V4L2 subdevice
 108  * @pads: Media entity pads
 109  * @formats: Active formats at the subdev pad
 110  * @crop: Active crop rectangle
 111  * @input: Module currently connected to the input pad
 112  * @output: Bitmask of the active output
 113  * @video_in: Input video entity
 114  * @video_out: Output video entity
 115  * @params.params : Active and shadow parameters sets
 116  * @params.active: Bitmask of parameters active in set 0
 117  * @params.lock: Parameters lock, protects params.active and params.shadow
 118  * @underrun: Whether the preview entity has queued buffers on the output
 119  * @state: Current preview pipeline state
 120  *
 121  * This structure is used to store the OMAP ISP Preview module Information.
 122  */
 123 struct isp_prev_device {
 124         struct v4l2_subdev subdev;
 125         struct media_pad pads[PREV_PADS_NUM];
 126         struct v4l2_mbus_framefmt formats[PREV_PADS_NUM];
 127         struct v4l2_rect crop;
 128
 129         struct v4l2_ctrl_handler ctrls;
 130
 131         enum preview_input_entity input;
 132         unsigned int output;
 133         struct isp_video video_in;
 134         struct isp_video video_out;
 135
 136         struct {
 137                 unsigned int cfa_order;
 138                 struct prev_params params[2];
 139                 u32 active;
 140                 spinlock_t lock;
 141         } params;
 142
 143         enum isp_pipeline_stream_state state;
 144         wait_queue_head_t wait;
 145         atomic_t stopping;
 146 };
 147
 148 struct isp_device;
 149
 150 int omap3isp_preview_init(struct isp_device *isp);
 151 void omap3isp_preview_cleanup(struct isp_device *isp);
 152
 153 int omap3isp_preview_register_entities(struct isp_prev_device *prv,
 154                                        struct v4l2_device *vdev);
 155 void omap3isp_preview_unregister_entities(struct isp_prev_device *prv);
 156
 157 void omap3isp_preview_isr_frame_sync(struct isp_prev_device *prev);
 158 void omap3isp_preview_isr(struct isp_prev_device *prev);
 159
 160 int omap3isp_preview_busy(struct isp_prev_device *isp_prev);
 161
 162 void omap3isp_preview_restore_context(struct isp_device *isp);
 163
 164 #endif  /* OMAP3_ISP_PREVIEW_H */