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a3550ea6 | 1 | /* |
a3550ea6 FS |
2 | * Copyright (c) 2013 Lubomir Rintel |
3 | * All rights reserved. | |
a3550ea6 FS |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without | |
6 | * modification, are permitted provided that the following conditions | |
7 | * are met: | |
8 | * 1. Redistributions of source code must retain the above copyright | |
9 | * notice, this list of conditions, and the following disclaimer, | |
10 | * without modification. | |
11 | * 2. The name of the author may not be used to endorse or promote products | |
12 | * derived from this software without specific prior written permission. | |
13 | * | |
14 | * Alternatively, this software may be distributed under the terms of the | |
15 | * GNU General Public License ("GPL"). | |
5ae1e2b2 LR |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
18 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
19 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
20 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
21 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
22 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
23 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
27 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
28 | */ | |
29 | /* | |
30 | * Fushicai USBTV007 Audio-Video Grabber Driver | |
31 | * | |
32 | * No physical hardware was harmed running Windows during the | |
33 | * reverse-engineering activity | |
a3550ea6 FS |
34 | */ |
35 | ||
9fd9330c | 36 | #include <linux/module.h> |
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37 | #include <linux/slab.h> |
38 | #include <linux/usb.h> | |
39 | ||
40 | #include <media/v4l2-device.h> | |
c53a846c | 41 | #include <media/v4l2-ctrls.h> |
2d700715 | 42 | #include <media/videobuf2-v4l2.h> |
a3550ea6 FS |
43 | #include <media/videobuf2-vmalloc.h> |
44 | ||
45 | /* Hardware. */ | |
46 | #define USBTV_VIDEO_ENDP 0x81 | |
63ddf68d | 47 | #define USBTV_AUDIO_ENDP 0x83 |
a3550ea6 | 48 | #define USBTV_BASE 0xc000 |
c53a846c | 49 | #define USBTV_CONTROL_REG 11 |
a3550ea6 FS |
50 | #define USBTV_REQUEST_REG 12 |
51 | ||
52 | /* Number of concurrent isochronous urbs submitted. | |
53 | * Higher numbers was seen to overly saturate the USB bus. */ | |
54 | #define USBTV_ISOC_TRANSFERS 16 | |
55 | #define USBTV_ISOC_PACKETS 8 | |
56 | ||
57 | #define USBTV_CHUNK_SIZE 256 | |
58 | #define USBTV_CHUNK 240 | |
59 | ||
63ddf68d FS |
60 | #define USBTV_AUDIO_URBSIZE 20480 |
61 | #define USBTV_AUDIO_HDRSIZE 4 | |
62 | #define USBTV_AUDIO_BUFFER 65536 | |
63 | ||
a3550ea6 FS |
64 | /* Chunk header. */ |
65 | #define USBTV_MAGIC_OK(chunk) ((be32_to_cpu(chunk[0]) & 0xff000000) \ | |
66 | == 0x88000000) | |
67 | #define USBTV_FRAME_ID(chunk) ((be32_to_cpu(chunk[0]) & 0x00ff0000) >> 16) | |
68 | #define USBTV_ODD(chunk) ((be32_to_cpu(chunk[0]) & 0x0000f000) >> 15) | |
69 | #define USBTV_CHUNK_NO(chunk) (be32_to_cpu(chunk[0]) & 0x00000fff) | |
70 | ||
71 | #define USBTV_TV_STD (V4L2_STD_525_60 | V4L2_STD_PAL) | |
72 | ||
73 | /* parameters for supported TV norms */ | |
74 | struct usbtv_norm_params { | |
75 | v4l2_std_id norm; | |
76 | int cap_width, cap_height; | |
77 | }; | |
78 | ||
79 | /* A single videobuf2 frame buffer. */ | |
80 | struct usbtv_buf { | |
2d700715 | 81 | struct vb2_v4l2_buffer vb; |
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82 | struct list_head list; |
83 | }; | |
84 | ||
85 | /* Per-device structure. */ | |
86 | struct usbtv { | |
87 | struct device *dev; | |
88 | struct usb_device *udev; | |
89 | ||
90 | /* video */ | |
91 | struct v4l2_device v4l2_dev; | |
c53a846c | 92 | struct v4l2_ctrl_handler ctrl; |
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93 | struct video_device vdev; |
94 | struct vb2_queue vb2q; | |
95 | struct mutex v4l2_lock; | |
96 | struct mutex vb2q_lock; | |
97 | ||
98 | /* List of videobuf2 buffers protected by a lock. */ | |
99 | spinlock_t buflock; | |
100 | struct list_head bufs; | |
101 | ||
102 | /* Number of currently processed frame, useful find | |
103 | * out when a new one begins. */ | |
104 | u32 frame_id; | |
105 | int chunks_done; | |
106 | ||
107 | enum { | |
108 | USBTV_COMPOSITE_INPUT, | |
109 | USBTV_SVIDEO_INPUT, | |
110 | } input; | |
111 | v4l2_std_id norm; | |
112 | int width, height; | |
113 | int n_chunks; | |
114 | int iso_size; | |
80fa4f07 | 115 | int last_odd; |
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116 | unsigned int sequence; |
117 | struct urb *isoc_urbs[USBTV_ISOC_TRANSFERS]; | |
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118 | |
119 | /* audio */ | |
120 | struct snd_card *snd; | |
121 | struct snd_pcm_substream *snd_substream; | |
122 | atomic_t snd_stream; | |
123 | struct work_struct snd_trigger; | |
124 | struct urb *snd_bulk_urb; | |
125 | size_t snd_buffer_pos; | |
126 | size_t snd_period_pos; | |
a3550ea6 FS |
127 | }; |
128 | ||
129 | int usbtv_set_regs(struct usbtv *usbtv, const u16 regs[][2], int size); | |
130 | ||
131 | int usbtv_video_init(struct usbtv *usbtv); | |
132 | void usbtv_video_free(struct usbtv *usbtv); | |
63ddf68d FS |
133 | |
134 | int usbtv_audio_init(struct usbtv *usbtv); | |
135 | void usbtv_audio_free(struct usbtv *usbtv); | |
136 | void usbtv_audio_suspend(struct usbtv *usbtv); | |
137 | void usbtv_audio_resume(struct usbtv *usbtv); |