![Greg Kroah-Hartman](/assets/img/avatar_default.png)
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>
261 lines
7.3 KiB
C
261 lines
7.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef OXYGEN_H_INCLUDED
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#define OXYGEN_H_INCLUDED
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#include <linux/mutex.h>
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#include <linux/spinlock.h>
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#include <linux/wait.h>
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#include <linux/workqueue.h>
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#include "oxygen_regs.h"
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/* 1 << PCM_x == OXYGEN_CHANNEL_x */
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#define PCM_A 0
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#define PCM_B 1
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#define PCM_C 2
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#define PCM_SPDIF 3
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#define PCM_MULTICH 4
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#define PCM_AC97 5
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#define PCM_COUNT 6
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#define OXYGEN_MCLKS(f_single, f_double, f_quad) ((MCLK_##f_single << 0) | \
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(MCLK_##f_double << 2) | \
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(MCLK_##f_quad << 4))
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#define OXYGEN_IO_SIZE 0x100
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#define OXYGEN_EEPROM_ID 0x434d /* "CM" */
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/* model-specific configuration of outputs/inputs */
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#define PLAYBACK_0_TO_I2S 0x0001
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/* PLAYBACK_0_TO_AC97_0 not implemented */
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#define PLAYBACK_1_TO_SPDIF 0x0004
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#define PLAYBACK_2_TO_AC97_1 0x0008
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#define CAPTURE_0_FROM_I2S_1 0x0010
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#define CAPTURE_0_FROM_I2S_2 0x0020
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/* CAPTURE_0_FROM_AC97_0 not implemented */
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#define CAPTURE_1_FROM_SPDIF 0x0080
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#define CAPTURE_2_FROM_I2S_2 0x0100
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#define CAPTURE_2_FROM_AC97_1 0x0200
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#define CAPTURE_3_FROM_I2S_3 0x0400
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#define MIDI_OUTPUT 0x0800
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#define MIDI_INPUT 0x1000
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#define AC97_CD_INPUT 0x2000
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#define AC97_FMIC_SWITCH 0x4000
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enum {
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CONTROL_SPDIF_PCM,
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CONTROL_SPDIF_INPUT_BITS,
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CONTROL_MIC_CAPTURE_SWITCH,
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CONTROL_LINE_CAPTURE_SWITCH,
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CONTROL_CD_CAPTURE_SWITCH,
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CONTROL_AUX_CAPTURE_SWITCH,
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CONTROL_COUNT
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};
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#define OXYGEN_PCI_SUBID(sv, sd) \
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.vendor = PCI_VENDOR_ID_CMEDIA, \
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.device = 0x8788, \
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.subvendor = sv, \
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.subdevice = sd
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#define BROKEN_EEPROM_DRIVER_DATA ((unsigned long)-1)
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#define OXYGEN_PCI_SUBID_BROKEN_EEPROM \
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OXYGEN_PCI_SUBID(PCI_VENDOR_ID_CMEDIA, 0x8788), \
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.driver_data = BROKEN_EEPROM_DRIVER_DATA
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struct pci_dev;
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struct pci_device_id;
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struct snd_card;
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struct snd_pcm_substream;
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struct snd_pcm_hardware;
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struct snd_pcm_hw_params;
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struct snd_kcontrol_new;
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struct snd_rawmidi;
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struct snd_info_buffer;
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struct oxygen;
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struct oxygen_model {
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const char *shortname;
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const char *longname;
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const char *chip;
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void (*init)(struct oxygen *chip);
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int (*control_filter)(struct snd_kcontrol_new *template);
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int (*mixer_init)(struct oxygen *chip);
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void (*cleanup)(struct oxygen *chip);
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void (*suspend)(struct oxygen *chip);
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void (*resume)(struct oxygen *chip);
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void (*pcm_hardware_filter)(unsigned int channel,
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struct snd_pcm_hardware *hardware);
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void (*set_dac_params)(struct oxygen *chip,
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struct snd_pcm_hw_params *params);
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void (*set_adc_params)(struct oxygen *chip,
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struct snd_pcm_hw_params *params);
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void (*update_dac_volume)(struct oxygen *chip);
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void (*update_dac_mute)(struct oxygen *chip);
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void (*update_center_lfe_mix)(struct oxygen *chip, bool mixed);
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unsigned int (*adjust_dac_routing)(struct oxygen *chip,
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unsigned int play_routing);
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void (*gpio_changed)(struct oxygen *chip);
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void (*uart_input)(struct oxygen *chip);
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void (*ac97_switch)(struct oxygen *chip,
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unsigned int reg, unsigned int mute);
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void (*dump_registers)(struct oxygen *chip,
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struct snd_info_buffer *buffer);
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const unsigned int *dac_tlv;
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size_t model_data_size;
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unsigned int device_config;
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u8 dac_channels_pcm;
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u8 dac_channels_mixer;
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u8 dac_volume_min;
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u8 dac_volume_max;
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u8 misc_flags;
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u8 function_flags;
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u8 dac_mclks;
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u8 adc_mclks;
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u16 dac_i2s_format;
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u16 adc_i2s_format;
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};
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struct oxygen {
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unsigned long addr;
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spinlock_t reg_lock;
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struct mutex mutex;
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struct snd_card *card;
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struct pci_dev *pci;
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struct snd_rawmidi *midi;
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int irq;
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void *model_data;
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unsigned int interrupt_mask;
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u8 dac_volume[8];
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u8 dac_mute;
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u8 pcm_active;
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u8 pcm_running;
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u8 dac_routing;
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u8 spdif_playback_enable;
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u8 has_ac97_0;
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u8 has_ac97_1;
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u32 spdif_bits;
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u32 spdif_pcm_bits;
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struct snd_pcm_substream *streams[PCM_COUNT];
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struct snd_kcontrol *controls[CONTROL_COUNT];
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struct work_struct spdif_input_bits_work;
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struct work_struct gpio_work;
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wait_queue_head_t ac97_waitqueue;
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union {
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u8 _8[OXYGEN_IO_SIZE];
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__le16 _16[OXYGEN_IO_SIZE / 2];
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__le32 _32[OXYGEN_IO_SIZE / 4];
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} saved_registers;
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u16 saved_ac97_registers[2][0x40];
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unsigned int uart_input_count;
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u8 uart_input[32];
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struct oxygen_model model;
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};
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/* oxygen_lib.c */
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int oxygen_pci_probe(struct pci_dev *pci, int index, char *id,
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struct module *owner,
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const struct pci_device_id *ids,
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int (*get_model)(struct oxygen *chip,
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const struct pci_device_id *id
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)
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);
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void oxygen_pci_remove(struct pci_dev *pci);
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#ifdef CONFIG_PM_SLEEP
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extern const struct dev_pm_ops oxygen_pci_pm;
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#endif
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void oxygen_pci_shutdown(struct pci_dev *pci);
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/* oxygen_mixer.c */
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int oxygen_mixer_init(struct oxygen *chip);
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void oxygen_update_dac_routing(struct oxygen *chip);
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void oxygen_update_spdif_source(struct oxygen *chip);
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/* oxygen_pcm.c */
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int oxygen_pcm_init(struct oxygen *chip);
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/* oxygen_io.c */
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u8 oxygen_read8(struct oxygen *chip, unsigned int reg);
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u16 oxygen_read16(struct oxygen *chip, unsigned int reg);
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u32 oxygen_read32(struct oxygen *chip, unsigned int reg);
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void oxygen_write8(struct oxygen *chip, unsigned int reg, u8 value);
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void oxygen_write16(struct oxygen *chip, unsigned int reg, u16 value);
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void oxygen_write32(struct oxygen *chip, unsigned int reg, u32 value);
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void oxygen_write8_masked(struct oxygen *chip, unsigned int reg,
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u8 value, u8 mask);
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void oxygen_write16_masked(struct oxygen *chip, unsigned int reg,
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u16 value, u16 mask);
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void oxygen_write32_masked(struct oxygen *chip, unsigned int reg,
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u32 value, u32 mask);
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u16 oxygen_read_ac97(struct oxygen *chip, unsigned int codec,
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unsigned int index);
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void oxygen_write_ac97(struct oxygen *chip, unsigned int codec,
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unsigned int index, u16 data);
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void oxygen_write_ac97_masked(struct oxygen *chip, unsigned int codec,
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unsigned int index, u16 data, u16 mask);
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int oxygen_write_spi(struct oxygen *chip, u8 control, unsigned int data);
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void oxygen_write_i2c(struct oxygen *chip, u8 device, u8 map, u8 data);
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void oxygen_reset_uart(struct oxygen *chip);
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void oxygen_write_uart(struct oxygen *chip, u8 data);
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u16 oxygen_read_eeprom(struct oxygen *chip, unsigned int index);
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void oxygen_write_eeprom(struct oxygen *chip, unsigned int index, u16 value);
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static inline void oxygen_set_bits8(struct oxygen *chip,
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unsigned int reg, u8 value)
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{
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oxygen_write8_masked(chip, reg, value, value);
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}
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static inline void oxygen_set_bits16(struct oxygen *chip,
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unsigned int reg, u16 value)
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{
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oxygen_write16_masked(chip, reg, value, value);
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}
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static inline void oxygen_set_bits32(struct oxygen *chip,
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unsigned int reg, u32 value)
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{
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oxygen_write32_masked(chip, reg, value, value);
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}
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static inline void oxygen_clear_bits8(struct oxygen *chip,
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unsigned int reg, u8 value)
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{
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oxygen_write8_masked(chip, reg, 0, value);
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}
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static inline void oxygen_clear_bits16(struct oxygen *chip,
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unsigned int reg, u16 value)
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{
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oxygen_write16_masked(chip, reg, 0, value);
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}
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static inline void oxygen_clear_bits32(struct oxygen *chip,
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unsigned int reg, u32 value)
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{
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oxygen_write32_masked(chip, reg, 0, value);
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}
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static inline void oxygen_ac97_set_bits(struct oxygen *chip, unsigned int codec,
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unsigned int index, u16 value)
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{
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oxygen_write_ac97_masked(chip, codec, index, value, value);
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}
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static inline void oxygen_ac97_clear_bits(struct oxygen *chip,
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unsigned int codec,
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unsigned int index, u16 value)
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{
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oxygen_write_ac97_masked(chip, codec, index, 0, value);
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}
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#endif
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