mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-26 19:00:25 +00:00
![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>
218 lines
5.7 KiB
C
218 lines
5.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* linux/drivers/pcmcia/soc_common.h
|
|
*
|
|
* Copyright (C) 2000 John G Dorsey <john+@cs.cmu.edu>
|
|
*
|
|
* This file contains definitions for the PCMCIA support code common to
|
|
* integrated SOCs like the SA-11x0 and PXA2xx microprocessors.
|
|
*/
|
|
#ifndef _ASM_ARCH_PCMCIA
|
|
#define _ASM_ARCH_PCMCIA
|
|
|
|
/* include the world */
|
|
#include <linux/clk.h>
|
|
#include <linux/cpufreq.h>
|
|
#include <pcmcia/ss.h>
|
|
#include <pcmcia/cistpl.h>
|
|
|
|
|
|
struct device;
|
|
struct gpio_desc;
|
|
struct pcmcia_low_level;
|
|
struct regulator;
|
|
|
|
struct soc_pcmcia_regulator {
|
|
struct regulator *reg;
|
|
bool on;
|
|
};
|
|
|
|
/*
|
|
* This structure encapsulates per-socket state which we might need to
|
|
* use when responding to a Card Services query of some kind.
|
|
*/
|
|
struct soc_pcmcia_socket {
|
|
struct pcmcia_socket socket;
|
|
|
|
/*
|
|
* Info from low level handler
|
|
*/
|
|
unsigned int nr;
|
|
struct clk *clk;
|
|
|
|
/*
|
|
* Core PCMCIA state
|
|
*/
|
|
const struct pcmcia_low_level *ops;
|
|
|
|
unsigned int status;
|
|
socket_state_t cs_state;
|
|
|
|
unsigned short spd_io[MAX_IO_WIN];
|
|
unsigned short spd_mem[MAX_WIN];
|
|
unsigned short spd_attr[MAX_WIN];
|
|
|
|
struct resource res_skt;
|
|
struct resource res_io;
|
|
struct resource res_mem;
|
|
struct resource res_attr;
|
|
void __iomem *virt_io;
|
|
|
|
struct {
|
|
int gpio;
|
|
struct gpio_desc *desc;
|
|
unsigned int irq;
|
|
const char *name;
|
|
} stat[6];
|
|
#define SOC_STAT_CD 0 /* Card detect */
|
|
#define SOC_STAT_BVD1 1 /* BATDEAD / IOSTSCHG */
|
|
#define SOC_STAT_BVD2 2 /* BATWARN / IOSPKR */
|
|
#define SOC_STAT_RDY 3 /* Ready / Interrupt */
|
|
#define SOC_STAT_VS1 4 /* Voltage sense 1 */
|
|
#define SOC_STAT_VS2 5 /* Voltage sense 2 */
|
|
|
|
struct gpio_desc *gpio_reset;
|
|
struct gpio_desc *gpio_bus_enable;
|
|
struct soc_pcmcia_regulator vcc;
|
|
struct soc_pcmcia_regulator vpp;
|
|
|
|
unsigned int irq_state;
|
|
|
|
#ifdef CONFIG_CPU_FREQ
|
|
struct notifier_block cpufreq_nb;
|
|
#endif
|
|
struct timer_list poll_timer;
|
|
struct list_head node;
|
|
void *driver_data;
|
|
};
|
|
|
|
struct skt_dev_info {
|
|
int nskt;
|
|
struct soc_pcmcia_socket skt[0];
|
|
};
|
|
|
|
struct pcmcia_state {
|
|
unsigned detect: 1,
|
|
ready: 1,
|
|
bvd1: 1,
|
|
bvd2: 1,
|
|
wrprot: 1,
|
|
vs_3v: 1,
|
|
vs_Xv: 1;
|
|
};
|
|
|
|
struct pcmcia_low_level {
|
|
struct module *owner;
|
|
|
|
/* first socket in system */
|
|
int first;
|
|
/* nr of sockets */
|
|
int nr;
|
|
|
|
int (*hw_init)(struct soc_pcmcia_socket *);
|
|
void (*hw_shutdown)(struct soc_pcmcia_socket *);
|
|
|
|
void (*socket_state)(struct soc_pcmcia_socket *, struct pcmcia_state *);
|
|
int (*configure_socket)(struct soc_pcmcia_socket *, const socket_state_t *);
|
|
|
|
/*
|
|
* Enable card status IRQs on (re-)initialisation. This can
|
|
* be called at initialisation, power management event, or
|
|
* pcmcia event.
|
|
*/
|
|
void (*socket_init)(struct soc_pcmcia_socket *);
|
|
|
|
/*
|
|
* Disable card status IRQs and PCMCIA bus on suspend.
|
|
*/
|
|
void (*socket_suspend)(struct soc_pcmcia_socket *);
|
|
|
|
/*
|
|
* Hardware specific timing routines.
|
|
* If provided, the get_timing routine overrides the SOC default.
|
|
*/
|
|
unsigned int (*get_timing)(struct soc_pcmcia_socket *, unsigned int, unsigned int);
|
|
int (*set_timing)(struct soc_pcmcia_socket *);
|
|
int (*show_timing)(struct soc_pcmcia_socket *, char *);
|
|
|
|
#ifdef CONFIG_CPU_FREQ
|
|
/*
|
|
* CPUFREQ support.
|
|
*/
|
|
int (*frequency_change)(struct soc_pcmcia_socket *, unsigned long, struct cpufreq_freqs *);
|
|
#endif
|
|
};
|
|
|
|
|
|
struct soc_pcmcia_timing {
|
|
unsigned short io;
|
|
unsigned short mem;
|
|
unsigned short attr;
|
|
};
|
|
|
|
extern void soc_common_pcmcia_get_timing(struct soc_pcmcia_socket *, struct soc_pcmcia_timing *);
|
|
|
|
void soc_pcmcia_init_one(struct soc_pcmcia_socket *skt,
|
|
const struct pcmcia_low_level *ops, struct device *dev);
|
|
void soc_pcmcia_remove_one(struct soc_pcmcia_socket *skt);
|
|
int soc_pcmcia_add_one(struct soc_pcmcia_socket *skt);
|
|
int soc_pcmcia_request_gpiods(struct soc_pcmcia_socket *skt);
|
|
|
|
void soc_common_cf_socket_state(struct soc_pcmcia_socket *skt,
|
|
struct pcmcia_state *state);
|
|
|
|
int soc_pcmcia_regulator_set(struct soc_pcmcia_socket *skt,
|
|
struct soc_pcmcia_regulator *r, int v);
|
|
|
|
#ifdef CONFIG_PCMCIA_DEBUG
|
|
|
|
extern void soc_pcmcia_debug(struct soc_pcmcia_socket *skt, const char *func,
|
|
int lvl, const char *fmt, ...);
|
|
|
|
#define debug(skt, lvl, fmt, arg...) \
|
|
soc_pcmcia_debug(skt, __func__, lvl, fmt , ## arg)
|
|
|
|
#else
|
|
#define debug(skt, lvl, fmt, arg...) do { } while (0)
|
|
#endif
|
|
|
|
|
|
/*
|
|
* The PC Card Standard, Release 7, section 4.13.4, says that twIORD
|
|
* has a minimum value of 165ns. Section 4.13.5 says that twIOWR has
|
|
* a minimum value of 165ns, as well. Section 4.7.2 (describing
|
|
* common and attribute memory write timing) says that twWE has a
|
|
* minimum value of 150ns for a 250ns cycle time (for 5V operation;
|
|
* see section 4.7.4), or 300ns for a 600ns cycle time (for 3.3V
|
|
* operation, also section 4.7.4). Section 4.7.3 says that taOE
|
|
* has a maximum value of 150ns for a 300ns cycle time (for 5V
|
|
* operation), or 300ns for a 600ns cycle time (for 3.3V operation).
|
|
*
|
|
* When configuring memory maps, Card Services appears to adopt the policy
|
|
* that a memory access time of "0" means "use the default." The default
|
|
* PCMCIA I/O command width time is 165ns. The default PCMCIA 5V attribute
|
|
* and memory command width time is 150ns; the PCMCIA 3.3V attribute and
|
|
* memory command width time is 300ns.
|
|
*/
|
|
#define SOC_PCMCIA_IO_ACCESS (165)
|
|
#define SOC_PCMCIA_5V_MEM_ACCESS (150)
|
|
#define SOC_PCMCIA_3V_MEM_ACCESS (300)
|
|
#define SOC_PCMCIA_ATTR_MEM_ACCESS (300)
|
|
|
|
/*
|
|
* The socket driver actually works nicely in interrupt-driven form,
|
|
* so the (relatively infrequent) polling is "just to be sure."
|
|
*/
|
|
#define SOC_PCMCIA_POLL_PERIOD (2*HZ)
|
|
|
|
|
|
/* I/O pins replacing memory pins
|
|
* (PCMCIA System Architecture, 2nd ed., by Don Anderson, p.75)
|
|
*
|
|
* These signals change meaning when going from memory-only to
|
|
* memory-or-I/O interface:
|
|
*/
|
|
#define iostschg bvd1
|
|
#define iospkr bvd2
|
|
|
|
#endif
|