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 */ 140