1 /* SPDX-License-Identifier: GPL-2.0+ */
2 /*
3 * TI OMAP4 ISS V4L2 Driver - ISP IPIPEIF 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_IPIPEIF_H
11 #define OMAP4_ISS_IPIPEIF_H
12
13 #include "iss_video.h"
14
15 enum ipipeif_input_entity {
16 IPIPEIF_INPUT_NONE,
17 IPIPEIF_INPUT_CSI2A,
18 IPIPEIF_INPUT_CSI2B
19 };
20
21 #define IPIPEIF_OUTPUT_MEMORY BIT(0)
22 #define IPIPEIF_OUTPUT_VP BIT(1)
23
24 /* Sink and source IPIPEIF pads */
25 #define IPIPEIF_PAD_SINK 0
26 #define IPIPEIF_PAD_SOURCE_ISIF_SF 1
27 #define IPIPEIF_PAD_SOURCE_VP 2
28 #define IPIPEIF_PADS_NUM 3
29
30 /*
31 * struct iss_ipipeif_device - Structure for the IPIPEIF module to store its own
32 * information
33 * @subdev: V4L2 subdevice
34 * @pads: Sink and source media entity pads
35 * @formats: Active video formats
36 * @input: Active input
37 * @output: Active outputs
38 * @video_out: Output video node
39 * @error: A hardware error occurred during capture
40 * @alaw: A-law compression enabled (1) or disabled (0)
41 * @lpf: Low pass filter enabled (1) or disabled (0)
42 * @obclamp: Optical-black clamp enabled (1) or disabled (0)
43 * @fpc_en: Faulty pixels correction enabled (1) or disabled (0)
44 * @blcomp: Black level compensation configuration
45 * @clamp: Optical-black or digital clamp configuration
46 * @fpc: Faulty pixels correction configuration
47 * @lsc: Lens shading compensation configuration
48 * @update: Bitmask of controls to update during the next interrupt
49 * @shadow_update: Controls update in progress by userspace
50 * @syncif: Interface synchronization configuration
51 * @vpcfg: Video port configuration
52 * @underrun: A buffer underrun occurred and a new buffer has been queued
53 * @state: Streaming state
54 * @lock: Serializes shadow_update with interrupt handler
55 * @wait: Wait queue used to stop the module
56 * @stopping: Stopping state
57 * @ioctl_lock: Serializes ioctl calls and LSC requests freeing
58 */
59 struct iss_ipipeif_device {
60 struct v4l2_subdev subdev;
61 struct media_pad pads[IPIPEIF_PADS_NUM];
62 struct v4l2_mbus_framefmt formats[IPIPEIF_PADS_NUM];
63
64 enum ipipeif_input_entity input;
65 unsigned int output;
66 struct iss_video video_out;
67 unsigned int error;
68
69 enum iss_pipeline_stream_state state;
70 wait_queue_head_t wait;
71 atomic_t stopping;
72 };
73
74 struct iss_device;
75
76 int omap4iss_ipipeif_init(struct iss_device *iss);
77 int omap4iss_ipipeif_create_links(struct iss_device *iss);
78 void omap4iss_ipipeif_cleanup(struct iss_device *iss);
79 int omap4iss_ipipeif_register_entities(struct iss_ipipeif_device *ipipeif,
80 struct v4l2_device *vdev);
81 void omap4iss_ipipeif_unregister_entities(struct iss_ipipeif_device *ipipeif);
82
83 int omap4iss_ipipeif_busy(struct iss_ipipeif_device *ipipeif);
84 void omap4iss_ipipeif_isr(struct iss_ipipeif_device *ipipeif, u32 events);
85 void omap4iss_ipipeif_restore_context(struct iss_device *iss);
86 void omap4iss_ipipeif_max_rate(struct iss_ipipeif_device *ipipeif,
87 unsigned int *max_rate);
88
89 #endif /* OMAP4_ISS_IPIPEIF_H */