License cleanup: add SPDX GPL-2.0 license identifier to files with no license
Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.
By default all files without license information are under the default
license of the kernel, which is GPL version 2.
Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier. The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.
This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.
How this work was done:
Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
- file had no licensing information it it.
- file was a */uapi/* one with no licensing information in it,
- file was a */uapi/* one with existing licensing information,
Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.
The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne. Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.
The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed. Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.
Criteria used to select files for SPDX license identifier tagging was:
- Files considered eligible had to be source code files.
- Make and config files were included as candidates if they contained >5
lines of source
- File already had some variant of a license header in it (even if <5
lines).
All documentation files were explicitly excluded.
The following heuristics were used to determine which SPDX license
identifiers to apply.
- when both scanners couldn't find any license traces, file was
considered to have no license information in it, and the top level
COPYING file license applied.
For non */uapi/* files that summary was:
SPDX license identifier # files
---------------------------------------------------|-------
GPL-2.0 11139
and resulted in the first patch in this series.
If that file was a */uapi/* path one, it was "GPL-2.0 WITH
Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was:
SPDX license identifier # files
---------------------------------------------------|-------
GPL-2.0 WITH Linux-syscall-note 930
and resulted in the second patch in this series.
- if a file had some form of licensing information in it, and was one
of the */uapi/* ones, it was denoted with the Linux-syscall-note if
any GPL family license was found in the file or had no licensing in
it (per prior point). Results summary:
SPDX license identifier # files
---------------------------------------------------|------
GPL-2.0 WITH Linux-syscall-note 270
GPL-2.0+ WITH Linux-syscall-note 169
((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21
((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17
LGPL-2.1+ WITH Linux-syscall-note 15
GPL-1.0+ WITH Linux-syscall-note 14
((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5
LGPL-2.0+ WITH Linux-syscall-note 4
LGPL-2.1 WITH Linux-syscall-note 3
((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3
((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1
and that resulted in the third patch in this series.
- when the two scanners agreed on the detected license(s), that became
the concluded license(s).
- when there was disagreement between the two scanners (one detected a
license but the other didn't, or they both detected different
licenses) a manual inspection of the file occurred.
- In most cases a manual inspection of the information in the file
resulted in a clear resolution of the license that should apply (and
which scanner probably needed to revisit its heuristics).
- When it was not immediately clear, the license identifier was
confirmed with lawyers working with the Linux Foundation.
- If there was any question as to the appropriate license identifier,
the file was flagged for further research and to be revisited later
in time.
In total, over 70 hours of logged manual review was done on the
spreadsheet to determine the SPDX license identifiers to apply to the
source files by Kate, Philippe, Thomas and, in some cases, confirmation
by lawyers working with the Linux Foundation.
Kate also obtained a third independent scan of the 4.13 code base from
FOSSology, and compared selected files where the other two scanners
disagreed against that SPDX file, to see if there was new insights. The
Windriver scanner is based on an older version of FOSSology in part, so
they are related.
Thomas did random spot checks in about 500 files from the spreadsheets
for the uapi headers and agreed with SPDX license identifier in the
files he inspected. For the non-uapi files Thomas did random spot checks
in about 15000 files.
In initial set of patches against 4.14-rc6, 3 files were found to have
copy/paste license identifier errors, and have been fixed to reflect the
correct identifier.
Additionally Philippe spent 10 hours this week doing a detailed manual
inspection and review of the 12,461 patched files from the initial patch
version early this week with:
- a full scancode scan run, collecting the matched texts, detected
license ids and scores
- reviewing anything where there was a license detected (about 500+
files) to ensure that the applied SPDX license was correct
- reviewing anything where there was no detection but the patch license
was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
SPDX license was correct
This produced a worksheet with 20 files needing minor correction. This
worksheet was then exported into 3 different .csv files for the
different types of files to be modified.
These .csv files were then reviewed by Greg. Thomas wrote a script to
parse the csv files and add the proper SPDX tag to the file, in the
format that the file expected. This script was further refined by Greg
based on the output to detect more types of files automatically and to
distinguish between header and source .c files (which need different
comment types.) Finally Greg ran the script using the .csv files to
generate the patches.
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-01 08:07:57 -06:00
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/* SPDX-License-Identifier: GPL-2.0 */
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2010-10-19 18:32:11 -06:00
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/*
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* VIA Camera register definitions.
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*/
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#define VCR_INTCTRL 0x300 /* Capture interrupt control */
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#define VCR_IC_EAV 0x0001 /* End of active video status */
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#define VCR_IC_EVBI 0x0002 /* End of VBI status */
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#define VCR_IC_FBOTFLD 0x0004 /* "flipping" Bottom field is active */
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#define VCR_IC_ACTBUF 0x0018 /* Active video buffer */
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#define VCR_IC_VSYNC 0x0020 /* 0 = VB, 1 = active video */
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#define VCR_IC_BOTFLD 0x0040 /* Bottom field is active */
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#define VCR_IC_FFULL 0x0080 /* FIFO full */
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#define VCR_IC_INTEN 0x0100 /* End of active video int. enable */
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#define VCR_IC_VBIINT 0x0200 /* End of VBI int enable */
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#define VCR_IC_VBIBUF 0x0400 /* Current VBI buffer */
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#define VCR_TSC 0x308 /* Transport stream control */
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#define VCR_TSC_ENABLE 0x000001 /* Transport stream input enable */
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#define VCR_TSC_DROPERR 0x000002 /* Drop error packets */
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#define VCR_TSC_METHOD 0x00000c /* DMA method (non-functional) */
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#define VCR_TSC_COUNT 0x07fff0 /* KByte or packet count */
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#define VCR_TSC_CBMODE 0x080000 /* Change buffer by byte count */
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#define VCR_TSC_PSSIG 0x100000 /* Packet starting signal disable */
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#define VCR_TSC_BE 0x200000 /* MSB first (serial mode) */
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#define VCR_TSC_SERIAL 0x400000 /* Serial input (0 = parallel) */
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#define VCR_CAPINTC 0x310 /* Capture interface control */
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#define VCR_CI_ENABLE 0x00000001 /* Capture enable */
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#define VCR_CI_BSS 0x00000002 /* WTF "bit stream selection" */
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#define VCR_CI_3BUFS 0x00000004 /* 1 = 3 buffers, 0 = 2 buffers */
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#define VCR_CI_VIPEN 0x00000008 /* VIP enable */
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2018-01-04 04:47:28 -07:00
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#define VCR_CI_CCIR601_8 0 /* CCIR601 input stream, 8 bit */
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2010-10-19 18:32:11 -06:00
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#define VCR_CI_CCIR656_8 0x00000010 /* ... CCIR656, 8 bit */
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#define VCR_CI_CCIR601_16 0x00000020 /* ... CCIR601, 16 bit */
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#define VCR_CI_CCIR656_16 0x00000030 /* ... CCIR656, 16 bit */
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#define VCR_CI_HDMODE 0x00000040 /* CCIR656-16 hdr decode mode; 1=16b */
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#define VCR_CI_BSWAP 0x00000080 /* Swap bytes (16-bit) */
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#define VCR_CI_YUYV 0 /* Byte order 0123 */
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#define VCR_CI_UYVY 0x00000100 /* Byte order 1032 */
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#define VCR_CI_YVYU 0x00000200 /* Byte order 0321 */
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#define VCR_CI_VYUY 0x00000300 /* Byte order 3012 */
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#define VCR_CI_VIPTYPE 0x00000400 /* VIP type */
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#define VCR_CI_IFSEN 0x00000800 /* Input field signal enable */
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#define VCR_CI_DIODD 0 /* De-interlace odd, 30fps */
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#define VCR_CI_DIEVEN 0x00001000 /* ...even field, 30fps */
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#define VCR_CI_DIBOTH 0x00002000 /* ...both fields, 60fps */
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#define VCR_CI_DIBOTH30 0x00003000 /* ...both fields, 30fps interlace */
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#define VCR_CI_CONVTYPE 0x00004000 /* 4:2:2 to 4:4:4; 1 = interpolate */
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#define VCR_CI_CFC 0x00008000 /* Capture flipping control */
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#define VCR_CI_FILTER 0x00070000 /* Horiz filter mode select
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000 = none
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001 = 2 tap
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010 = 3 tap
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011 = 4 tap
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100 = 5 tap */
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#define VCR_CI_CLKINV 0x00080000 /* Input CLK inverted */
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#define VCR_CI_VREFINV 0x00100000 /* VREF inverted */
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#define VCR_CI_HREFINV 0x00200000 /* HREF inverted */
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#define VCR_CI_FLDINV 0x00400000 /* Field inverted */
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#define VCR_CI_CLKPIN 0x00800000 /* Capture clock pin */
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#define VCR_CI_THRESH 0x0f000000 /* Capture fifo threshold */
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#define VCR_CI_HRLE 0x10000000 /* Positive edge of HREF */
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#define VCR_CI_VRLE 0x20000000 /* Positive edge of VREF */
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#define VCR_CI_OFLDINV 0x40000000 /* Field output inverted */
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#define VCR_CI_CLKEN 0x80000000 /* Capture clock enable */
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#define VCR_HORRANGE 0x314 /* Active video horizontal range */
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#define VCR_VERTRANGE 0x318 /* Active video vertical range */
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#define VCR_AVSCALE 0x31c /* Active video scaling control */
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#define VCR_AVS_HEN 0x00000800 /* Horizontal scale enable */
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#define VCR_AVS_VEN 0x04000000 /* Vertical enable */
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#define VCR_VBIHOR 0x320 /* VBI Data horizontal range */
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#define VCR_VBIVERT 0x324 /* VBI data vertical range */
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#define VCR_VBIBUF1 0x328 /* First VBI buffer */
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#define VCR_VBISTRIDE 0x32c /* VBI stride */
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#define VCR_ANCDATACNT 0x330 /* Ancillary data count setting */
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#define VCR_MAXDATA 0x334 /* Active data count of active video */
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#define VCR_MAXVBI 0x338 /* Maximum data count of VBI */
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#define VCR_CAPDATA 0x33c /* Capture data count */
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#define VCR_VBUF1 0x340 /* First video buffer */
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#define VCR_VBUF2 0x344 /* Second video buffer */
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#define VCR_VBUF3 0x348 /* Third video buffer */
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#define VCR_VBUF_MASK 0x1ffffff0 /* Bits 28:4 */
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#define VCR_VBIBUF2 0x34c /* Second VBI buffer */
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#define VCR_VSTRIDE 0x350 /* Stride of video + coring control */
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#define VCR_VS_STRIDE_SHIFT 4
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#define VCR_VS_STRIDE 0x00001ff0 /* Stride (8-byte units) */
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#define VCR_VS_CCD 0x007f0000 /* Coring compare data */
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#define VCR_VS_COREEN 0x00800000 /* Coring enable */
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#define VCR_TS0ERR 0x354 /* TS buffer 0 error indicator */
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#define VCR_TS1ERR 0x358 /* TS buffer 0 error indicator */
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#define VCR_TS2ERR 0x35c /* TS buffer 0 error indicator */
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/* Add 0x1000 for the second capture engine registers */
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