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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>
337 lines
8.1 KiB
C
337 lines
8.1 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* arch/arm/mach-ixp4xx/nas100d-setup.c
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*
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* NAS 100d board-setup
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*
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* Copyright (C) 2008 Rod Whitby <rod@whitby.id.au>
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*
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* based on ixdp425-setup.c:
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* Copyright (C) 2003-2004 MontaVista Software, Inc.
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* based on nas100d-power.c:
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* Copyright (C) 2005 Tower Technologies
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* based on nas100d-io.c
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* Copyright (C) 2004 Karen Spearel
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*
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* Author: Alessandro Zummo <a.zummo@towertech.it>
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* Author: Rod Whitby <rod@whitby.id.au>
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* Maintainers: http://www.nslu2-linux.org/
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*
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*/
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#include <linux/gpio.h>
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#include <linux/if_ether.h>
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#include <linux/irq.h>
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#include <linux/jiffies.h>
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#include <linux/timer.h>
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#include <linux/serial.h>
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#include <linux/serial_8250.h>
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#include <linux/leds.h>
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#include <linux/reboot.h>
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#include <linux/i2c.h>
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#include <linux/i2c-gpio.h>
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#include <linux/io.h>
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#include <asm/mach-types.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/flash.h>
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#define NAS100D_SDA_PIN 5
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#define NAS100D_SCL_PIN 6
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/* Buttons */
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#define NAS100D_PB_GPIO 14 /* power button */
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#define NAS100D_RB_GPIO 4 /* reset button */
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/* Power control */
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#define NAS100D_PO_GPIO 12 /* power off */
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/* LEDs */
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#define NAS100D_LED_WLAN_GPIO 0
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#define NAS100D_LED_DISK_GPIO 3
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#define NAS100D_LED_PWR_GPIO 15
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static struct flash_platform_data nas100d_flash_data = {
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.map_name = "cfi_probe",
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.width = 2,
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};
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static struct resource nas100d_flash_resource = {
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.flags = IORESOURCE_MEM,
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};
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static struct platform_device nas100d_flash = {
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.name = "IXP4XX-Flash",
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.id = 0,
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.dev.platform_data = &nas100d_flash_data,
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.num_resources = 1,
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.resource = &nas100d_flash_resource,
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};
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static struct i2c_board_info __initdata nas100d_i2c_board_info [] = {
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{
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I2C_BOARD_INFO("pcf8563", 0x51),
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},
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};
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static struct gpio_led nas100d_led_pins[] = {
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{
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.name = "nas100d:green:wlan",
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.gpio = NAS100D_LED_WLAN_GPIO,
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.active_low = true,
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},
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{
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.name = "nas100d:blue:power", /* (off=flashing) */
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.gpio = NAS100D_LED_PWR_GPIO,
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.active_low = true,
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},
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{
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.name = "nas100d:yellow:disk",
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.gpio = NAS100D_LED_DISK_GPIO,
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.active_low = true,
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},
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};
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static struct gpio_led_platform_data nas100d_led_data = {
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.num_leds = ARRAY_SIZE(nas100d_led_pins),
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.leds = nas100d_led_pins,
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};
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static struct platform_device nas100d_leds = {
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.name = "leds-gpio",
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.id = -1,
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.dev.platform_data = &nas100d_led_data,
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};
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static struct i2c_gpio_platform_data nas100d_i2c_gpio_data = {
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.sda_pin = NAS100D_SDA_PIN,
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.scl_pin = NAS100D_SCL_PIN,
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};
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static struct platform_device nas100d_i2c_gpio = {
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.name = "i2c-gpio",
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.id = 0,
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.dev = {
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.platform_data = &nas100d_i2c_gpio_data,
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},
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};
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static struct resource nas100d_uart_resources[] = {
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{
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.start = IXP4XX_UART1_BASE_PHYS,
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.end = IXP4XX_UART1_BASE_PHYS + 0x0fff,
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.flags = IORESOURCE_MEM,
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},
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{
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.start = IXP4XX_UART2_BASE_PHYS,
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.end = IXP4XX_UART2_BASE_PHYS + 0x0fff,
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.flags = IORESOURCE_MEM,
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}
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};
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static struct plat_serial8250_port nas100d_uart_data[] = {
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{
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.mapbase = IXP4XX_UART1_BASE_PHYS,
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.membase = (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,
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.irq = IRQ_IXP4XX_UART1,
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.flags = UPF_BOOT_AUTOCONF,
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.iotype = UPIO_MEM,
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.regshift = 2,
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.uartclk = IXP4XX_UART_XTAL,
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},
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{
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.mapbase = IXP4XX_UART2_BASE_PHYS,
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.membase = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
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.irq = IRQ_IXP4XX_UART2,
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.flags = UPF_BOOT_AUTOCONF,
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.iotype = UPIO_MEM,
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.regshift = 2,
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.uartclk = IXP4XX_UART_XTAL,
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},
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{ }
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};
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static struct platform_device nas100d_uart = {
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.name = "serial8250",
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.id = PLAT8250_DEV_PLATFORM,
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.dev.platform_data = nas100d_uart_data,
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.num_resources = 2,
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.resource = nas100d_uart_resources,
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};
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/* Built-in 10/100 Ethernet MAC interfaces */
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static struct eth_plat_info nas100d_plat_eth[] = {
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{
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.phy = 0,
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.rxq = 3,
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.txreadyq = 20,
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}
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};
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static struct platform_device nas100d_eth[] = {
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{
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.name = "ixp4xx_eth",
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.id = IXP4XX_ETH_NPEB,
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.dev.platform_data = nas100d_plat_eth,
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}
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};
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static struct platform_device *nas100d_devices[] __initdata = {
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&nas100d_i2c_gpio,
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&nas100d_flash,
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&nas100d_leds,
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&nas100d_eth[0],
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};
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static void nas100d_power_off(void)
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{
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/* This causes the box to drop the power and go dead. */
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/* enable the pwr cntl gpio and assert power off */
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gpio_direction_output(NAS100D_PO_GPIO, 1);
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}
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/* This is used to make sure the power-button pusher is serious. The button
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* must be held until the value of this counter reaches zero.
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*/
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static int power_button_countdown;
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/* Must hold the button down for at least this many counts to be processed */
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#define PBUTTON_HOLDDOWN_COUNT 4 /* 2 secs */
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static void nas100d_power_handler(unsigned long data);
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static DEFINE_TIMER(nas100d_power_timer, nas100d_power_handler, 0, 0);
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static void nas100d_power_handler(unsigned long data)
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{
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/* This routine is called twice per second to check the
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* state of the power button.
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*/
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if (gpio_get_value(NAS100D_PB_GPIO)) {
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/* IO Pin is 1 (button pushed) */
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if (power_button_countdown > 0)
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power_button_countdown--;
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} else {
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/* Done on button release, to allow for auto-power-on mods. */
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if (power_button_countdown == 0) {
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/* Signal init to do the ctrlaltdel action,
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* this will bypass init if it hasn't started
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* and do a kernel_restart.
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*/
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ctrl_alt_del();
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/* Change the state of the power LED to "blink" */
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gpio_set_value(NAS100D_LED_PWR_GPIO, 0);
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} else {
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power_button_countdown = PBUTTON_HOLDDOWN_COUNT;
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}
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}
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mod_timer(&nas100d_power_timer, jiffies + msecs_to_jiffies(500));
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}
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static irqreturn_t nas100d_reset_handler(int irq, void *dev_id)
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{
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/* This is the paper-clip reset, it shuts the machine down directly. */
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machine_power_off();
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return IRQ_HANDLED;
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}
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static int __init nas100d_gpio_init(void)
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{
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if (!machine_is_nas100d())
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return 0;
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/*
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* The power button on the Iomega NAS100d is on GPIO 14, but
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* it cannot handle interrupts on that GPIO line. So we'll
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* have to poll it with a kernel timer.
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*/
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/* Request the power off GPIO */
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gpio_request(NAS100D_PO_GPIO, "power off");
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/* Make sure that the power button GPIO is set up as an input */
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gpio_request(NAS100D_PB_GPIO, "power button");
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gpio_direction_input(NAS100D_PB_GPIO);
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/* Set the initial value for the power button IRQ handler */
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power_button_countdown = PBUTTON_HOLDDOWN_COUNT;
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mod_timer(&nas100d_power_timer, jiffies + msecs_to_jiffies(500));
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return 0;
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}
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device_initcall(nas100d_gpio_init);
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static void __init nas100d_init(void)
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{
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uint8_t __iomem *f;
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int i;
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ixp4xx_sys_init();
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/* gpio 14 and 15 are _not_ clocks */
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*IXP4XX_GPIO_GPCLKR = 0;
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nas100d_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
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nas100d_flash_resource.end =
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IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1;
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i2c_register_board_info(0, nas100d_i2c_board_info,
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ARRAY_SIZE(nas100d_i2c_board_info));
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/*
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* This is only useful on a modified machine, but it is valuable
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* to have it first in order to see debug messages, and so that
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* it does *not* get removed if platform_add_devices fails!
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*/
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(void)platform_device_register(&nas100d_uart);
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platform_add_devices(nas100d_devices, ARRAY_SIZE(nas100d_devices));
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pm_power_off = nas100d_power_off;
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if (request_irq(gpio_to_irq(NAS100D_RB_GPIO), &nas100d_reset_handler,
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IRQF_TRIGGER_LOW, "NAS100D reset button", NULL) < 0) {
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printk(KERN_DEBUG "Reset Button IRQ %d not available\n",
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gpio_to_irq(NAS100D_RB_GPIO));
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}
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/*
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* Map in a portion of the flash and read the MAC address.
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* Since it is stored in BE in the flash itself, we need to
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* byteswap it if we're in LE mode.
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*/
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f = ioremap(IXP4XX_EXP_BUS_BASE(0), 0x1000000);
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if (f) {
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for (i = 0; i < 6; i++)
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#ifdef __ARMEB__
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nas100d_plat_eth[0].hwaddr[i] = readb(f + 0xFC0FD8 + i);
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#else
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nas100d_plat_eth[0].hwaddr[i] = readb(f + 0xFC0FD8 + (i^3));
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#endif
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iounmap(f);
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}
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printk(KERN_INFO "NAS100D: Using MAC address %pM for port 0\n",
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nas100d_plat_eth[0].hwaddr);
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}
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MACHINE_START(NAS100D, "Iomega NAS 100d")
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/* Maintainer: www.nslu2-linux.org */
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.atag_offset = 0x100,
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.map_io = ixp4xx_map_io,
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.init_early = ixp4xx_init_early,
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.init_irq = ixp4xx_init_irq,
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.init_time = ixp4xx_timer_init,
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.init_machine = nas100d_init,
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#if defined(CONFIG_PCI)
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.dma_zone_size = SZ_64M,
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#endif
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.restart = ixp4xx_restart,
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MACHINE_END
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