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 22:07:57 +08:00
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/* SPDX-License-Identifier: GPL-2.0 */
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2015-12-14 21:53:50 +08:00
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#ifndef _LINUX_INCLUDE_MFD_IMX25_TSADC_H_
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#define _LINUX_INCLUDE_MFD_IMX25_TSADC_H_
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struct regmap;
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struct clk;
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struct mx25_tsadc {
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struct regmap *regs;
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struct irq_domain *domain;
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struct clk *clk;
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};
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#define MX25_TSC_TGCR 0x00
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#define MX25_TSC_TGSR 0x04
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#define MX25_TSC_TICR 0x08
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/* The same register layout for TC and GC queue */
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#define MX25_ADCQ_FIFO 0x00
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#define MX25_ADCQ_CR 0x04
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#define MX25_ADCQ_SR 0x08
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#define MX25_ADCQ_MR 0x0c
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#define MX25_ADCQ_ITEM_7_0 0x20
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#define MX25_ADCQ_ITEM_15_8 0x24
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#define MX25_ADCQ_CFG(n) (0x40 + ((n) * 0x4))
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#define MX25_ADCQ_MR_MASK 0xffffffff
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/* TGCR */
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#define MX25_TGCR_PDBTIME(x) ((x) << 25)
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#define MX25_TGCR_PDBTIME_MASK GENMASK(31, 25)
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#define MX25_TGCR_PDBEN BIT(24)
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#define MX25_TGCR_PDEN BIT(23)
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#define MX25_TGCR_ADCCLKCFG(x) ((x) << 16)
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#define MX25_TGCR_GET_ADCCLK(x) (((x) >> 16) & 0x1f)
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#define MX25_TGCR_INTREFEN BIT(10)
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#define MX25_TGCR_POWERMODE_MASK GENMASK(9, 8)
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#define MX25_TGCR_POWERMODE_SAVE (1 << 8)
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#define MX25_TGCR_POWERMODE_ON (2 << 8)
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#define MX25_TGCR_STLC BIT(5)
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#define MX25_TGCR_SLPC BIT(4)
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#define MX25_TGCR_FUNC_RST BIT(2)
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#define MX25_TGCR_TSC_RST BIT(1)
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#define MX25_TGCR_CLK_EN BIT(0)
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/* TGSR */
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#define MX25_TGSR_SLP_INT BIT(2)
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#define MX25_TGSR_GCQ_INT BIT(1)
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#define MX25_TGSR_TCQ_INT BIT(0)
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/* ADCQ_ITEM_* */
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#define _MX25_ADCQ_ITEM(item, x) ((x) << ((item) * 4))
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#define MX25_ADCQ_ITEM(item, x) ((item) >= 8 ? \
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_MX25_ADCQ_ITEM((item) - 8, (x)) : _MX25_ADCQ_ITEM((item), (x)))
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/* ADCQ_FIFO (TCQFIFO and GCQFIFO) */
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#define MX25_ADCQ_FIFO_DATA(x) (((x) >> 4) & 0xfff)
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#define MX25_ADCQ_FIFO_ID(x) ((x) & 0xf)
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/* ADCQ_CR (TCQR and GCQR) */
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#define MX25_ADCQ_CR_PDCFG_LEVEL BIT(19)
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#define MX25_ADCQ_CR_PDMSK BIT(18)
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#define MX25_ADCQ_CR_FRST BIT(17)
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#define MX25_ADCQ_CR_QRST BIT(16)
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#define MX25_ADCQ_CR_RWAIT_MASK GENMASK(15, 12)
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#define MX25_ADCQ_CR_RWAIT(x) ((x) << 12)
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#define MX25_ADCQ_CR_WMRK_MASK GENMASK(11, 8)
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#define MX25_ADCQ_CR_WMRK(x) ((x) << 8)
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#define MX25_ADCQ_CR_LITEMID_MASK (0xf << 4)
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#define MX25_ADCQ_CR_LITEMID(x) ((x) << 4)
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#define MX25_ADCQ_CR_RPT BIT(3)
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#define MX25_ADCQ_CR_FQS BIT(2)
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#define MX25_ADCQ_CR_QSM_MASK GENMASK(1, 0)
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#define MX25_ADCQ_CR_QSM_PD 0x1
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#define MX25_ADCQ_CR_QSM_FQS 0x2
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#define MX25_ADCQ_CR_QSM_FQS_PD 0x3
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/* ADCQ_SR (TCQSR and GCQSR) */
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#define MX25_ADCQ_SR_FDRY BIT(15)
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#define MX25_ADCQ_SR_FULL BIT(14)
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#define MX25_ADCQ_SR_EMPT BIT(13)
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#define MX25_ADCQ_SR_FDN(x) (((x) >> 8) & 0x1f)
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#define MX25_ADCQ_SR_FRR BIT(6)
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#define MX25_ADCQ_SR_FUR BIT(5)
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#define MX25_ADCQ_SR_FOR BIT(4)
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#define MX25_ADCQ_SR_EOQ BIT(1)
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#define MX25_ADCQ_SR_PD BIT(0)
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/* ADCQ_MR (TCQMR and GCQMR) */
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#define MX25_ADCQ_MR_FDRY_DMA BIT(31)
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#define MX25_ADCQ_MR_FER_DMA BIT(22)
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#define MX25_ADCQ_MR_FUR_DMA BIT(21)
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#define MX25_ADCQ_MR_FOR_DMA BIT(20)
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#define MX25_ADCQ_MR_EOQ_DMA BIT(17)
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#define MX25_ADCQ_MR_PD_DMA BIT(16)
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#define MX25_ADCQ_MR_FDRY_IRQ BIT(15)
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#define MX25_ADCQ_MR_FER_IRQ BIT(6)
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#define MX25_ADCQ_MR_FUR_IRQ BIT(5)
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#define MX25_ADCQ_MR_FOR_IRQ BIT(4)
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#define MX25_ADCQ_MR_EOQ_IRQ BIT(1)
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#define MX25_ADCQ_MR_PD_IRQ BIT(0)
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/* ADCQ_CFG (TICR, TCC0-7,GCC0-7) */
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#define MX25_ADCQ_CFG_SETTLING_TIME(x) ((x) << 24)
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#define MX25_ADCQ_CFG_IGS (1 << 20)
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#define MX25_ADCQ_CFG_NOS_MASK GENMASK(19, 16)
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#define MX25_ADCQ_CFG_NOS(x) (((x) - 1) << 16)
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#define MX25_ADCQ_CFG_WIPER (1 << 15)
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#define MX25_ADCQ_CFG_YNLR (1 << 14)
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#define MX25_ADCQ_CFG_YPLL_HIGH (0 << 12)
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#define MX25_ADCQ_CFG_YPLL_OFF (1 << 12)
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#define MX25_ADCQ_CFG_YPLL_LOW (3 << 12)
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#define MX25_ADCQ_CFG_XNUR_HIGH (0 << 10)
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#define MX25_ADCQ_CFG_XNUR_OFF (1 << 10)
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#define MX25_ADCQ_CFG_XNUR_LOW (3 << 10)
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#define MX25_ADCQ_CFG_XPUL_HIGH (0 << 9)
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#define MX25_ADCQ_CFG_XPUL_OFF (1 << 9)
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#define MX25_ADCQ_CFG_REFP(sel) ((sel) << 7)
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#define MX25_ADCQ_CFG_REFP_YP MX25_ADCQ_CFG_REFP(0)
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#define MX25_ADCQ_CFG_REFP_XP MX25_ADCQ_CFG_REFP(1)
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#define MX25_ADCQ_CFG_REFP_EXT MX25_ADCQ_CFG_REFP(2)
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#define MX25_ADCQ_CFG_REFP_INT MX25_ADCQ_CFG_REFP(3)
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#define MX25_ADCQ_CFG_REFP_MASK GENMASK(8, 7)
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#define MX25_ADCQ_CFG_IN(sel) ((sel) << 4)
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#define MX25_ADCQ_CFG_IN_XP MX25_ADCQ_CFG_IN(0)
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#define MX25_ADCQ_CFG_IN_YP MX25_ADCQ_CFG_IN(1)
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#define MX25_ADCQ_CFG_IN_XN MX25_ADCQ_CFG_IN(2)
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#define MX25_ADCQ_CFG_IN_YN MX25_ADCQ_CFG_IN(3)
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#define MX25_ADCQ_CFG_IN_WIPER MX25_ADCQ_CFG_IN(4)
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#define MX25_ADCQ_CFG_IN_AUX0 MX25_ADCQ_CFG_IN(5)
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#define MX25_ADCQ_CFG_IN_AUX1 MX25_ADCQ_CFG_IN(6)
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#define MX25_ADCQ_CFG_IN_AUX2 MX25_ADCQ_CFG_IN(7)
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#define MX25_ADCQ_CFG_REFN(sel) ((sel) << 2)
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#define MX25_ADCQ_CFG_REFN_XN MX25_ADCQ_CFG_REFN(0)
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#define MX25_ADCQ_CFG_REFN_YN MX25_ADCQ_CFG_REFN(1)
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#define MX25_ADCQ_CFG_REFN_NGND MX25_ADCQ_CFG_REFN(2)
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#define MX25_ADCQ_CFG_REFN_NGND2 MX25_ADCQ_CFG_REFN(3)
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#define MX25_ADCQ_CFG_REFN_MASK GENMASK(3, 2)
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#define MX25_ADCQ_CFG_PENIACK (1 << 1)
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#endif /* _LINUX_INCLUDE_MFD_IMX25_TSADC_H_ */
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