/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* ispresizer.h
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*
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* TI OMAP3 ISP - Resizer module
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*
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* Copyright (C) 2010 Nokia Corporation
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* Copyright (C) 2009 Texas Instruments, Inc
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*
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* Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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* Sakari Ailus <sakari.ailus@iki.fi>
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*/
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#ifndef OMAP3_ISP_RESIZER_H
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#define OMAP3_ISP_RESIZER_H
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#include <linux/spinlock.h>
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#include <linux/types.h>
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/*
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* Constants for filter coefficients count
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*/
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#define COEFF_CNT 32
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/*
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* struct isprsz_coef - Structure for resizer filter coefficients.
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* @h_filter_coef_4tap: Horizontal filter coefficients for 8-phase/4-tap
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* mode (.5x-4x)
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* @v_filter_coef_4tap: Vertical filter coefficients for 8-phase/4-tap
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* mode (.5x-4x)
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* @h_filter_coef_7tap: Horizontal filter coefficients for 4-phase/7-tap
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* mode (.25x-.5x)
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* @v_filter_coef_7tap: Vertical filter coefficients for 4-phase/7-tap
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* mode (.25x-.5x)
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*/
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struct isprsz_coef {
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u16 h_filter_coef_4tap[32];
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u16 v_filter_coef_4tap[32];
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/* Every 8th value is a dummy value in the following arrays: */
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u16 h_filter_coef_7tap[32];
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u16 v_filter_coef_7tap[32];
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};
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/* Chrominance horizontal algorithm */
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enum resizer_chroma_algo {
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RSZ_THE_SAME = 0, /* Chrominance the same as Luminance */
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RSZ_BILINEAR = 1, /* Chrominance uses bilinear interpolation */
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};
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/* Resizer input type select */
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enum resizer_colors_type {
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RSZ_YUV422 = 0, /* YUV422 color is interleaved */
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RSZ_COLOR8 = 1, /* Color separate data on 8 bits */
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};
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/*
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* Structure for horizontal and vertical resizing value
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*/
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struct resizer_ratio {
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u32 horz;
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u32 vert;
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};
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/*
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* Structure for luminance enhancer parameters.
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*/
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struct resizer_luma_yenh {
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u8 algo; /* algorithm select. */
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u8 gain; /* maximum gain. */
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u8 slope; /* slope. */
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u8 core; /* core offset. */
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};
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enum resizer_input_entity {
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RESIZER_INPUT_NONE,
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RESIZER_INPUT_VP, /* input video port - prev or ccdc */
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RESIZER_INPUT_MEMORY,
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};
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/* Sink and source resizer pads */
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#define RESZ_PAD_SINK 0
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#define RESZ_PAD_SOURCE 1
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#define RESZ_PADS_NUM 2
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/*
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* struct isp_res_device - OMAP3 ISP resizer module
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* @lock: Protects formats and crop rectangles between set_selection and IRQ
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* @crop.request: Crop rectangle requested by the user
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* @crop.active: Active crop rectangle (based on hardware requirements)
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*/
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struct isp_res_device {
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struct v4l2_subdev subdev;
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struct media_pad pads[RESZ_PADS_NUM];
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struct v4l2_mbus_framefmt formats[RESZ_PADS_NUM];
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enum resizer_input_entity input;
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struct isp_video video_in;
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struct isp_video video_out;
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u32 addr_base; /* stored source buffer address in memory mode */
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u32 crop_offset; /* additional offset for crop in memory mode */
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struct resizer_ratio ratio;
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int pm_state;
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unsigned int applycrop:1;
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enum isp_pipeline_stream_state state;
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wait_queue_head_t wait;
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atomic_t stopping;
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spinlock_t lock;
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struct {
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struct v4l2_rect request;
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struct v4l2_rect active;
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} crop;
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};
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struct isp_device;
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int omap3isp_resizer_init(struct isp_device *isp);
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void omap3isp_resizer_cleanup(struct isp_device *isp);
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int omap3isp_resizer_register_entities(struct isp_res_device *res,
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struct v4l2_device *vdev);
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void omap3isp_resizer_unregister_entities(struct isp_res_device *res);
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void omap3isp_resizer_isr_frame_sync(struct isp_res_device *res);
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void omap3isp_resizer_isr(struct isp_res_device *isp_res);
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void omap3isp_resizer_max_rate(struct isp_res_device *res,
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unsigned int *max_rate);
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void omap3isp_resizer_suspend(struct isp_res_device *isp_res);
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void omap3isp_resizer_resume(struct isp_res_device *isp_res);
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int omap3isp_resizer_busy(struct isp_res_device *isp_res);
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#endif /* OMAP3_ISP_RESIZER_H */
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