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b24413180f
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>
123 lines
4.0 KiB
C
123 lines
4.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __USB_MIXER_US16X08_H
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#define __USB_MIXER_US16X08_H
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#define SND_US16X08_MAX_CHANNELS 16
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/* define some bias, cause some alsa-mixers wont work with
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* negative ranges or if mixer-min != 0
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*/
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#define SND_US16X08_NO_BIAS 0
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#define SND_US16X08_FADER_BIAS 127
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#define SND_US16X08_EQ_HIGHFREQ_BIAS 0x20
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#define SND_US16X08_COMP_THRESHOLD_BIAS 0x20
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#define SND_US16X08_COMP_ATTACK_BIAS 2
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#define SND_US16X08_COMP_RELEASE_BIAS 1
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/* get macro for components of kcontrol private_value */
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#define SND_US16X08_KCBIAS(x) (((x)->private_value >> 24) & 0xff)
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#define SND_US16X08_KCSTEP(x) (((x)->private_value >> 16) & 0xff)
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#define SND_US16X08_KCMIN(x) (((x)->private_value >> 8) & 0xff)
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#define SND_US16X08_KCMAX(x) (((x)->private_value >> 0) & 0xff)
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/* set macro for kcontrol private_value */
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#define SND_US16X08_KCSET(bias, step, min, max) \
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(((bias) << 24) | ((step) << 16) | ((min) << 8) | (max))
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/* the URB request/type to control Tascam mixers */
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#define SND_US16X08_URB_REQUEST 0x1D
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#define SND_US16X08_URB_REQUESTTYPE 0x40
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/* the URB params to retrieve meter ranges */
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#define SND_US16X08_URB_METER_REQUEST 0x1e
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#define SND_US16X08_URB_METER_REQUESTTYPE 0xc0
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#define MUA0(x, y) ((x)[(y) * 10 + 4])
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#define MUA1(x, y) ((x)[(y) * 10 + 5])
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#define MUA2(x, y) ((x)[(y) * 10 + 6])
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#define MUB0(x, y) ((x)[(y) * 10 + 7])
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#define MUB1(x, y) ((x)[(y) * 10 + 8])
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#define MUB2(x, y) ((x)[(y) * 10 + 9])
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#define MUC0(x, y) ((x)[(y) * 10 + 10])
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#define MUC1(x, y) ((x)[(y) * 10 + 11])
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#define MUC2(x, y) ((x)[(y) * 10 + 12])
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#define MUC3(x, y) ((x)[(y) * 10 + 13])
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/* Common Channel control IDs */
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#define SND_US16X08_ID_BYPASS 0x45
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#define SND_US16X08_ID_BUSS_OUT 0x44
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#define SND_US16X08_ID_PHASE 0x85
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#define SND_US16X08_ID_MUTE 0x83
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#define SND_US16X08_ID_FADER 0x81
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#define SND_US16X08_ID_PAN 0x82
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#define SND_US16X08_ID_METER 0xB1
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#define SND_US16X08_ID_EQ_BAND_COUNT 4
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#define SND_US16X08_ID_EQ_PARAM_COUNT 4
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/* EQ level IDs */
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#define SND_US16X08_ID_EQLOWLEVEL 0x01
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#define SND_US16X08_ID_EQLOWMIDLEVEL 0x02
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#define SND_US16X08_ID_EQHIGHMIDLEVEL 0x03
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#define SND_US16X08_ID_EQHIGHLEVEL 0x04
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/* EQ frequence IDs */
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#define SND_US16X08_ID_EQLOWFREQ 0x11
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#define SND_US16X08_ID_EQLOWMIDFREQ 0x12
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#define SND_US16X08_ID_EQHIGHMIDFREQ 0x13
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#define SND_US16X08_ID_EQHIGHFREQ 0x14
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/* EQ width IDs */
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#define SND_US16X08_ID_EQLOWMIDWIDTH 0x22
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#define SND_US16X08_ID_EQHIGHMIDWIDTH 0x23
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#define SND_US16X08_ID_EQENABLE 0x30
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#define EQ_STORE_BAND_IDX(x) ((x) & 0xf)
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#define EQ_STORE_PARAM_IDX(x) (((x) & 0xf0) >> 4)
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#define SND_US16X08_ID_ROUTE 0x00
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/* Compressor Ids */
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#define SND_US16X08_ID_COMP_BASE 0x32
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#define SND_US16X08_ID_COMP_THRESHOLD SND_US16X08_ID_COMP_BASE
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#define SND_US16X08_ID_COMP_RATIO (SND_US16X08_ID_COMP_BASE + 1)
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#define SND_US16X08_ID_COMP_ATTACK (SND_US16X08_ID_COMP_BASE + 2)
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#define SND_US16X08_ID_COMP_RELEASE (SND_US16X08_ID_COMP_BASE + 3)
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#define SND_US16X08_ID_COMP_GAIN (SND_US16X08_ID_COMP_BASE + 4)
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#define SND_US16X08_ID_COMP_SWITCH (SND_US16X08_ID_COMP_BASE + 5)
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#define SND_US16X08_ID_COMP_COUNT 6
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#define COMP_STORE_IDX(x) ((x) - SND_US16X08_ID_COMP_BASE)
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struct snd_us16x08_eq_store {
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u8 val[SND_US16X08_ID_EQ_BAND_COUNT][SND_US16X08_ID_EQ_PARAM_COUNT]
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[SND_US16X08_MAX_CHANNELS];
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};
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struct snd_us16x08_comp_store {
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u8 val[SND_US16X08_ID_COMP_COUNT][SND_US16X08_MAX_CHANNELS];
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};
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struct snd_us16x08_meter_store {
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int meter_level[SND_US16X08_MAX_CHANNELS];
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int master_level[2]; /* level of meter for master output */
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int comp_index; /* round trip channel selector */
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int comp_active_index; /* channel select from user space mixer */
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int comp_level[16]; /* compressor reduction level */
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struct snd_us16x08_comp_store *comp_store;
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};
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struct snd_us16x08_control_params {
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struct snd_kcontrol_new *kcontrol_new;
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int control_id;
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int type;
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int num_channels;
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const char *name;
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int default_val;
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};
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#define snd_us16x08_switch_info snd_ctl_boolean_mono_info
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int snd_us16x08_controls_create(struct usb_mixer_interface *mixer);
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#endif /* __USB_MIXER_US16X08_H */
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