drivers/media/platform/omap3isp/ispresizer.h

   1 /*
   2  * ispresizer.h
   3  *
   4  * TI OMAP3 ISP - Resizer 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_RESIZER_H
  18 #define OMAP3_ISP_RESIZER_H
  19
  20 #include <linux/spinlock.h>
  21 #include <linux/types.h>
  22
  23 /*
  24  * Constants for filter coefficients count
  25  */
  26 #define COEFF_CNT               32
  27
  28 /*
  29  * struct isprsz_coef - Structure for resizer filter coefficients.
  30  * @h_filter_coef_4tap: Horizontal filter coefficients for 8-phase/4-tap
  31  *                      mode (.5x-4x)
  32  * @v_filter_coef_4tap: Vertical filter coefficients for 8-phase/4-tap
  33  *                      mode (.5x-4x)
  34  * @h_filter_coef_7tap: Horizontal filter coefficients for 4-phase/7-tap
  35  *                      mode (.25x-.5x)
  36  * @v_filter_coef_7tap: Vertical filter coefficients for 4-phase/7-tap
  37  *                      mode (.25x-.5x)
  38  */
  39 struct isprsz_coef {
  40         u16 h_filter_coef_4tap[32];
  41         u16 v_filter_coef_4tap[32];
  42         /* Every 8th value is a dummy value in the following arrays: */
  43         u16 h_filter_coef_7tap[32];
  44         u16 v_filter_coef_7tap[32];
  45 };
  46
  47 /* Chrominance horizontal algorithm */
  48 enum resizer_chroma_algo {
  49         RSZ_THE_SAME = 0,       /* Chrominance the same as Luminance */
  50         RSZ_BILINEAR = 1,       /* Chrominance uses bilinear interpolation */
  51 };
  52
  53 /* Resizer input type select */
  54 enum resizer_colors_type {
  55         RSZ_YUV422 = 0,         /* YUV422 color is interleaved */
  56         RSZ_COLOR8 = 1,         /* Color separate data on 8 bits */
  57 };
  58
  59 /*
  60  * Structure for horizontal and vertical resizing value
  61  */
  62 struct resizer_ratio {
  63         u32 horz;
  64         u32 vert;
  65 };
  66
  67 /*
  68  * Structure for luminance enhancer parameters.
  69  */
  70 struct resizer_luma_yenh {
  71         u8 algo;                /* algorithm select. */
  72         u8 gain;                /* maximum gain. */
  73         u8 slope;               /* slope. */
  74         u8 core;                /* core offset. */
  75 };
  76
  77 enum resizer_input_entity {
  78         RESIZER_INPUT_NONE,
  79         RESIZER_INPUT_VP,       /* input video port - prev or ccdc */
  80         RESIZER_INPUT_MEMORY,
  81 };
  82
  83 /* Sink and source resizer pads */
  84 #define RESZ_PAD_SINK                   0
  85 #define RESZ_PAD_SOURCE                 1
  86 #define RESZ_PADS_NUM                   2
  87
  88 /*
  89  * struct isp_res_device - OMAP3 ISP resizer module
  90  * @lock: Protects formats and crop rectangles between set_selection and IRQ
  91  * @crop.request: Crop rectangle requested by the user
  92  * @crop.active: Active crop rectangle (based on hardware requirements)
  93  */
  94 struct isp_res_device {
  95         struct v4l2_subdev subdev;
  96         struct media_pad pads[RESZ_PADS_NUM];
  97         struct v4l2_mbus_framefmt formats[RESZ_PADS_NUM];
  98
  99         enum resizer_input_entity input;
 100         struct isp_video video_in;
 101         struct isp_video video_out;
 102
 103         u32 addr_base;   /* stored source buffer address in memory mode */
 104         u32 crop_offset; /* additional offset for crop in memory mode */
 105         struct resizer_ratio ratio;
 106         int pm_state;
 107         unsigned int applycrop:1;
 108         enum isp_pipeline_stream_state state;
 109         wait_queue_head_t wait;
 110         atomic_t stopping;
 111         spinlock_t lock;
 112
 113         struct {
 114                 struct v4l2_rect request;
 115                 struct v4l2_rect active;
 116         } crop;
 117 };
 118
 119 struct isp_device;
 120
 121 int omap3isp_resizer_init(struct isp_device *isp);
 122 void omap3isp_resizer_cleanup(struct isp_device *isp);
 123
 124 int omap3isp_resizer_register_entities(struct isp_res_device *res,
 125                                        struct v4l2_device *vdev);
 126 void omap3isp_resizer_unregister_entities(struct isp_res_device *res);
 127 void omap3isp_resizer_isr_frame_sync(struct isp_res_device *res);
 128 void omap3isp_resizer_isr(struct isp_res_device *isp_res);
 129
 130 void omap3isp_resizer_max_rate(struct isp_res_device *res,
 131                                unsigned int *max_rate);
 132
 133 void omap3isp_resizer_suspend(struct isp_res_device *isp_res);
 134
 135 void omap3isp_resizer_resume(struct isp_res_device *isp_res);
 136
 137 int omap3isp_resizer_busy(struct isp_res_device *isp_res);
 138
 139 #endif  /* OMAP3_ISP_RESIZER_H */