drivers/media/video/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  * This program is distributed in the hope that it will be useful, but
  17  * WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19  * General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  24  * 02110-1301 USA
  25  */
  26
  27 #ifndef OMAP3_ISP_RESIZER_H
  28 #define OMAP3_ISP_RESIZER_H
  29
  30 #include <linux/types.h>
  31
  32 /*
  33  * Constants for filter coefficents count
  34  */
  35 #define COEFF_CNT               32
  36
  37 /*
  38  * struct isprsz_coef - Structure for resizer filter coeffcients.
  39  * @h_filter_coef_4tap: Horizontal filter coefficients for 8-phase/4-tap
  40  *                      mode (.5x-4x)
  41  * @v_filter_coef_4tap: Vertical filter coefficients for 8-phase/4-tap
  42  *                      mode (.5x-4x)
  43  * @h_filter_coef_7tap: Horizontal filter coefficients for 4-phase/7-tap
  44  *                      mode (.25x-.5x)
  45  * @v_filter_coef_7tap: Vertical filter coefficients for 4-phase/7-tap
  46  *                      mode (.25x-.5x)
  47  */
  48 struct isprsz_coef {
  49         u16 h_filter_coef_4tap[32];
  50         u16 v_filter_coef_4tap[32];
  51         /* Every 8th value is a dummy value in the following arrays: */
  52         u16 h_filter_coef_7tap[32];
  53         u16 v_filter_coef_7tap[32];
  54 };
  55
  56 /* Chrominance horizontal algorithm */
  57 enum resizer_chroma_algo {
  58         RSZ_THE_SAME = 0,       /* Chrominance the same as Luminance */
  59         RSZ_BILINEAR = 1,       /* Chrominance uses bilinear interpolation */
  60 };
  61
  62 /* Resizer input type select */
  63 enum resizer_colors_type {
  64         RSZ_YUV422 = 0,         /* YUV422 color is interleaved */
  65         RSZ_COLOR8 = 1,         /* Color separate data on 8 bits */
  66 };
  67
  68 /*
  69  * Structure for horizontal and vertical resizing value
  70  */
  71 struct resizer_ratio {
  72         u32 horz;
  73         u32 vert;
  74 };
  75
  76 /*
  77  * Structure for luminance enhancer parameters.
  78  */
  79 struct resizer_luma_yenh {
  80         u8 algo;                /* algorithm select. */
  81         u8 gain;                /* maximum gain. */
  82         u8 slope;               /* slope. */
  83         u8 core;                /* core offset. */
  84 };
  85
  86 enum resizer_input_entity {
  87         RESIZER_INPUT_NONE,
  88         RESIZER_INPUT_VP,       /* input video port - prev or ccdc */
  89         RESIZER_INPUT_MEMORY,
  90 };
  91
  92 /* Sink and source resizer pads */
  93 #define RESZ_PAD_SINK                   0
  94 #define RESZ_PAD_SOURCE                 1
  95 #define RESZ_PADS_NUM                   2
  96
  97 /*
  98  * struct isp_res_device - OMAP3 ISP resizer module
  99  * @crop.request: Crop rectangle requested by the user
 100  * @crop.active: Active crop rectangle (based on hardware requirements)
 101  */
 102 struct isp_res_device {
 103         struct v4l2_subdev subdev;
 104         struct media_pad pads[RESZ_PADS_NUM];
 105         struct v4l2_mbus_framefmt formats[RESZ_PADS_NUM];
 106
 107         enum resizer_input_entity input;
 108         struct isp_video video_in;
 109         struct isp_video video_out;
 110
 111         u32 addr_base;   /* stored source buffer address in memory mode */
 112         u32 crop_offset; /* additional offset for crop in memory mode */
 113         struct resizer_ratio ratio;
 114         int pm_state;
 115         unsigned int applycrop:1;
 116         enum isp_pipeline_stream_state state;
 117         wait_queue_head_t wait;
 118         atomic_t stopping;
 119
 120         struct {
 121                 struct v4l2_rect request;
 122                 struct v4l2_rect active;
 123         } crop;
 124 };
 125
 126 struct isp_device;
 127
 128 int omap3isp_resizer_init(struct isp_device *isp);
 129 void omap3isp_resizer_cleanup(struct isp_device *isp);
 130
 131 int omap3isp_resizer_register_entities(struct isp_res_device *res,
 132                                        struct v4l2_device *vdev);
 133 void omap3isp_resizer_unregister_entities(struct isp_res_device *res);
 134 void omap3isp_resizer_isr_frame_sync(struct isp_res_device *res);
 135 void omap3isp_resizer_isr(struct isp_res_device *isp_res);
 136
 137 void omap3isp_resizer_max_rate(struct isp_res_device *res,
 138                                unsigned int *max_rate);
 139
 140 void omap3isp_resizer_suspend(struct isp_res_device *isp_res);
 141
 142 void omap3isp_resizer_resume(struct isp_res_device *isp_res);
 143
 144 int omap3isp_resizer_busy(struct isp_res_device *isp_res);
 145
 146 #endif  /* OMAP3_ISP_RESIZER_H */