root/drivers/staging/media/omap4iss/iss_resizer.h

INCLUDED FROM

   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 
  15 enum 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  */
  42 struct 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 
  57 struct iss_device;
  58 
  59 int omap4iss_resizer_init(struct iss_device *iss);
  60 int omap4iss_resizer_create_links(struct iss_device *iss);
  61 void omap4iss_resizer_cleanup(struct iss_device *iss);
  62 int omap4iss_resizer_register_entities(struct iss_resizer_device *resizer,
  63                                        struct v4l2_device *vdev);
  64 void omap4iss_resizer_unregister_entities(struct iss_resizer_device *resizer);
  65 
  66 int omap4iss_resizer_busy(struct iss_resizer_device *resizer);
  67 void omap4iss_resizer_isr(struct iss_resizer_device *resizer, u32 events);
  68 void omap4iss_resizer_restore_context(struct iss_device *iss);
  69 void omap4iss_resizer_max_rate(struct iss_resizer_device *resizer,
  70                                unsigned int *max_rate);
  71 
  72 #endif  /* OMAP4_ISS_RESIZER_H */