LXR linux/drivers/staging/media/omap4iss/iss

   1/* SPDX-License-Identifier: GPL-2.0+ */
   2/*
   3 * TI OMAP4 ISS V4L2 Driver - ISP RESIZER module
   4 *
   5 * Copyright (C) 2012 Texas Instruments, Inc.
   6 *
   7 * Author: Sergio Aguirre <sergio.a.aguirre@gmail.com>
   8 */
   9
  10#ifndef OMAP4_ISS_RESIZER_H
  11#define OMAP4_ISS_RESIZER_H
  12
  13#include "iss_video.h"
  14
  15enum resizer_input_entity {
  16        RESIZER_INPUT_NONE,
  17        RESIZER_INPUT_IPIPE,
  18        RESIZER_INPUT_IPIPEIF
  19};
  20
  21#define RESIZER_OUTPUT_MEMORY                   BIT(0)
  22
  23/* Sink and source RESIZER pads */
  24#define RESIZER_PAD_SINK                        0
  25#define RESIZER_PAD_SOURCE_MEM                  1
  26#define RESIZER_PADS_NUM                        2
  27
  28/*
  29 * struct iss_resizer_device - Structure for the RESIZER module to store its own
  30 *                          information
  31 * @subdev: V4L2 subdevice
  32 * @pads: Sink and source media entity pads
  33 * @formats: Active video formats
  34 * @input: Active input
  35 * @output: Active outputs
  36 * @video_out: Output video node
  37 * @error: A hardware error occurred during capture
  38 * @state: Streaming state
  39 * @wait: Wait queue used to stop the module
  40 * @stopping: Stopping state
  41 */
  42struct iss_resizer_device {
  43        struct v4l2_subdev subdev;
  44        struct media_pad pads[RESIZER_PADS_NUM];
  45        struct v4l2_mbus_framefmt formats[RESIZER_PADS_NUM];
  46
  47        enum resizer_input_entity input;
  48        unsigned int output;
  49        struct iss_video video_out;
  50        unsigned int error;
  51
  52        enum iss_pipeline_stream_state state;
  53        wait_queue_head_t wait;
  54        atomic_t stopping;
  55};
  56
  57struct iss_device;
  58
  59int omap4iss_resizer_init(struct iss_device *iss);
  60int omap4iss_resizer_create_links(struct iss_device *iss);
  61void omap4iss_resizer_cleanup(struct iss_device *iss);
  62int omap4iss_resizer_register_entities(struct iss_resizer_device *resizer,
  63                                       struct v4l2_device *vdev);
  64void omap4iss_resizer_unregister_entities(struct iss_resizer_device *resizer);
  65
  66int omap4iss_resizer_busy(struct iss_resizer_device *resizer);
  67void omap4iss_resizer_isr(struct iss_resizer_device *resizer, u32 events);
  68void omap4iss_resizer_restore_context(struct iss_device *iss);
  69void omap4iss_resizer_max_rate(struct iss_resizer_device *resizer,
  70                               unsigned int *max_rate);
  71
  72#endif  /* OMAP4_ISS_RESIZER_H */
  73