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>
111 lines
6.0 KiB
C
111 lines
6.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __NVKM_DISP_DP_H__
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#define __NVKM_DISP_DP_H__
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#define nvkm_dp(p) container_of((p), struct nvkm_dp, outp)
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#include "outp.h"
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#include <core/notify.h>
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#include <subdev/bios.h>
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#include <subdev/bios/dp.h>
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struct nvkm_dp {
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union {
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struct nvkm_outp base;
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struct nvkm_outp outp;
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};
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struct nvbios_dpout info;
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u8 version;
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struct nvkm_i2c_aux *aux;
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struct nvkm_notify hpd;
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bool present;
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u8 dpcd[16];
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struct mutex mutex;
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struct {
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atomic_t done;
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bool mst;
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} lt;
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};
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int nvkm_dp_new(struct nvkm_disp *, int index, struct dcb_output *,
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struct nvkm_outp **);
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/* DPCD Receiver Capabilities */
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#define DPCD_RC00_DPCD_REV 0x00000
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#define DPCD_RC01_MAX_LINK_RATE 0x00001
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#define DPCD_RC02 0x00002
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#define DPCD_RC02_ENHANCED_FRAME_CAP 0x80
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#define DPCD_RC02_TPS3_SUPPORTED 0x40
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#define DPCD_RC02_MAX_LANE_COUNT 0x1f
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#define DPCD_RC03 0x00003
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#define DPCD_RC03_MAX_DOWNSPREAD 0x01
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#define DPCD_RC0E_AUX_RD_INTERVAL 0x0000e
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/* DPCD Link Configuration */
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#define DPCD_LC00_LINK_BW_SET 0x00100
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#define DPCD_LC01 0x00101
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#define DPCD_LC01_ENHANCED_FRAME_EN 0x80
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#define DPCD_LC01_LANE_COUNT_SET 0x1f
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#define DPCD_LC02 0x00102
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#define DPCD_LC02_TRAINING_PATTERN_SET 0x03
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#define DPCD_LC03(l) ((l) + 0x00103)
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#define DPCD_LC03_MAX_PRE_EMPHASIS_REACHED 0x20
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#define DPCD_LC03_PRE_EMPHASIS_SET 0x18
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#define DPCD_LC03_MAX_SWING_REACHED 0x04
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#define DPCD_LC03_VOLTAGE_SWING_SET 0x03
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#define DPCD_LC0F 0x0010f
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#define DPCD_LC0F_LANE1_MAX_POST_CURSOR2_REACHED 0x40
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#define DPCD_LC0F_LANE1_POST_CURSOR2_SET 0x30
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#define DPCD_LC0F_LANE0_MAX_POST_CURSOR2_REACHED 0x04
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#define DPCD_LC0F_LANE0_POST_CURSOR2_SET 0x03
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#define DPCD_LC10 0x00110
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#define DPCD_LC10_LANE3_MAX_POST_CURSOR2_REACHED 0x40
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#define DPCD_LC10_LANE3_POST_CURSOR2_SET 0x30
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#define DPCD_LC10_LANE2_MAX_POST_CURSOR2_REACHED 0x04
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#define DPCD_LC10_LANE2_POST_CURSOR2_SET 0x03
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/* DPCD Link/Sink Status */
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#define DPCD_LS02 0x00202
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#define DPCD_LS02_LANE1_SYMBOL_LOCKED 0x40
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#define DPCD_LS02_LANE1_CHANNEL_EQ_DONE 0x20
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#define DPCD_LS02_LANE1_CR_DONE 0x10
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#define DPCD_LS02_LANE0_SYMBOL_LOCKED 0x04
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#define DPCD_LS02_LANE0_CHANNEL_EQ_DONE 0x02
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#define DPCD_LS02_LANE0_CR_DONE 0x01
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#define DPCD_LS03 0x00203
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#define DPCD_LS03_LANE3_SYMBOL_LOCKED 0x40
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#define DPCD_LS03_LANE3_CHANNEL_EQ_DONE 0x20
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#define DPCD_LS03_LANE3_CR_DONE 0x10
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#define DPCD_LS03_LANE2_SYMBOL_LOCKED 0x04
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#define DPCD_LS03_LANE2_CHANNEL_EQ_DONE 0x02
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#define DPCD_LS03_LANE2_CR_DONE 0x01
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#define DPCD_LS04 0x00204
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#define DPCD_LS04_LINK_STATUS_UPDATED 0x80
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#define DPCD_LS04_DOWNSTREAM_PORT_STATUS_CHANGED 0x40
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#define DPCD_LS04_INTERLANE_ALIGN_DONE 0x01
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#define DPCD_LS06 0x00206
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#define DPCD_LS06_LANE1_PRE_EMPHASIS 0xc0
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#define DPCD_LS06_LANE1_VOLTAGE_SWING 0x30
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#define DPCD_LS06_LANE0_PRE_EMPHASIS 0x0c
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#define DPCD_LS06_LANE0_VOLTAGE_SWING 0x03
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#define DPCD_LS07 0x00207
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#define DPCD_LS07_LANE3_PRE_EMPHASIS 0xc0
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#define DPCD_LS07_LANE3_VOLTAGE_SWING 0x30
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#define DPCD_LS07_LANE2_PRE_EMPHASIS 0x0c
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#define DPCD_LS07_LANE2_VOLTAGE_SWING 0x03
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#define DPCD_LS0C 0x0020c
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#define DPCD_LS0C_LANE3_POST_CURSOR2 0xc0
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#define DPCD_LS0C_LANE2_POST_CURSOR2 0x30
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#define DPCD_LS0C_LANE1_POST_CURSOR2 0x0c
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#define DPCD_LS0C_LANE0_POST_CURSOR2 0x03
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/* DPCD Sink Control */
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#define DPCD_SC00 0x00600
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#define DPCD_SC00_SET_POWER 0x03
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#define DPCD_SC00_SET_POWER_D0 0x01
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#define DPCD_SC00_SET_POWER_D3 0x03
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#endif
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