1 /* 2 * TI OMAP4 ISS V4L2 Driver - ISP RESIZER module 3 * 4 * Copyright (C) 2012 Texas Instruments, Inc. 5 * 6 * Author: Sergio Aguirre <sergio.a.aguirre@gmail.com> 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 */ 13 14 #ifndef OMAP4_ISS_RESIZER_H 15 #define OMAP4_ISS_RESIZER_H 16 17 #include "iss_video.h" 18 19 enum resizer_input_entity { 20 RESIZER_INPUT_NONE, 21 RESIZER_INPUT_IPIPE, 22 RESIZER_INPUT_IPIPEIF 23 }; 24 25 #define RESIZER_OUTPUT_MEMORY BIT(0) 26 27 /* Sink and source RESIZER pads */ 28 #define RESIZER_PAD_SINK 0 29 #define RESIZER_PAD_SOURCE_MEM 1 30 #define RESIZER_PADS_NUM 2 31 32 /* 33 * struct iss_resizer_device - Structure for the RESIZER module to store its own 34 * information 35 * @subdev: V4L2 subdevice 36 * @pads: Sink and source media entity pads 37 * @formats: Active video formats 38 * @input: Active input 39 * @output: Active outputs 40 * @video_out: Output video node 41 * @error: A hardware error occurred during capture 42 * @state: Streaming state 43 * @wait: Wait queue used to stop the module 44 * @stopping: Stopping state 45 */ 46 struct iss_resizer_device { 47 struct v4l2_subdev subdev; 48 struct media_pad pads[RESIZER_PADS_NUM]; 49 struct v4l2_mbus_framefmt formats[RESIZER_PADS_NUM]; 50 51 enum resizer_input_entity input; 52 unsigned int output; 53 struct iss_video video_out; 54 unsigned int error; 55 56 enum iss_pipeline_stream_state state; 57 wait_queue_head_t wait; 58 atomic_t stopping; 59 }; 60 61 struct iss_device; 62 63 int omap4iss_resizer_init(struct iss_device *iss); 64 int omap4iss_resizer_create_links(struct iss_device *iss); 65 void omap4iss_resizer_cleanup(struct iss_device *iss); 66 int omap4iss_resizer_register_entities(struct iss_resizer_device *resizer, 67 struct v4l2_device *vdev); 68 void omap4iss_resizer_unregister_entities(struct iss_resizer_device *resizer); 69 70 int omap4iss_resizer_busy(struct iss_resizer_device *resizer); 71 void omap4iss_resizer_isr(struct iss_resizer_device *resizer, u32 events); 72 void omap4iss_resizer_restore_context(struct iss_device *iss); 73 void omap4iss_resizer_max_rate(struct iss_resizer_device *resizer, 74 unsigned int *max_rate); 75 76 #endif /* OMAP4_ISS_RESIZER_H */ 77