drivers: add missing SPDX-License-Identifier

This adds the suitable SPDX-License-Identifier to all files in drivers/
that previously lacked one.

To aid manual inspection, following heuristics can be used:

* No changes outside of comments/whitespace:

  git show -U0 HEAD | rg -v '^(@@|diff|index)|[-+]([-+]|//|#|[\s/]\*)'

* -or-later come in pairs:

  git show --inter-hunk-context=19 HEAD | \
    perl -0777 -F'/^@/gm' -ne 'for (@F) { @m = /later/g; print if @m & 1 }'

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Link: https://lore.barebox.org/20211030175632.2276077-4-a.fatoum@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

21 files changed, 23 insertions, 73 deletions

diff --git a/drivers/i2c/Kconfig b/drivers/i2c/Kconfig
index 0bd8be04e1..e7f3297ab9 100644
--- a/drivers/i2c/Kconfig
+++ b/drivers/i2c/Kconfig
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
 menuconfig I2C
 	bool "I2C drivers"
 
diff --git a/drivers/i2c/Makefile b/drivers/i2c/Makefile
index b887e75573..76f16ce815 100644
--- a/drivers/i2c/Makefile
+++ b/drivers/i2c/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
 obj-y += busses/
 obj-$(CONFIG_I2C) += i2c.o i2c-smbus.o algos/ muxes/
 obj-$(CONFIG_I2C_MUX) += i2c-mux.o
diff --git a/drivers/i2c/algos/Kconfig b/drivers/i2c/algos/Kconfig
index c74b148f5e..27463e0524 100644
--- a/drivers/i2c/algos/Kconfig
+++ b/drivers/i2c/algos/Kconfig
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
 #
 # I2C algorithm drivers configuration
 #
diff --git a/drivers/i2c/algos/Makefile b/drivers/i2c/algos/Makefile
index e0a03995b5..05c6a10f83 100644
--- a/drivers/i2c/algos/Makefile
+++ b/drivers/i2c/algos/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
 #
 # Makefile for the i2c algorithms
 #
diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
index 3bc8d1b8d2..df0aee1ec2 100644
--- a/drivers/i2c/busses/Kconfig
+++ b/drivers/i2c/busses/Kconfig
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
 #
 # Sensor device configuration
 #
diff --git a/drivers/i2c/busses/Makefile b/drivers/i2c/busses/Makefile
index 7e450ead27..4198178ece 100644
--- a/drivers/i2c/busses/Makefile
+++ b/drivers/i2c/busses/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
 obj-$(CONFIG_I2C_AT91)		+= i2c-at91.o
 obj-$(CONFIG_I2C_GPIO)		+= i2c-gpio.o
 obj-$(CONFIG_I2C_IMX)		+= i2c-imx.o
diff --git a/drivers/i2c/busses/i2c-at91.c b/drivers/i2c/busses/i2c-at91.c
index 70e87c1b2c..b100dc6c17 100644
--- a/drivers/i2c/busses/i2c-at91.c
+++ b/drivers/i2c/busses/i2c-at91.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  *  i2c Support for Atmel's AT91 Two-Wire Interface (TWI)
  *
@@ -10,11 +11,6 @@
  *
  *  Borrowed heavily from original work by:
  *  Copyright (C) 2000 Philip Edelbrock <phil@stimpy.netroedge.com>
- *
- *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation; either version 2 of the License, or
- *  (at your option) any later version.
  */
 
 #include <common.h>
diff --git a/drivers/i2c/busses/i2c-designware.c b/drivers/i2c/busses/i2c-designware.c
index 8508fac717..6c5b07fe91 100644
--- a/drivers/i2c/busses/i2c-designware.c
+++ b/drivers/i2c/busses/i2c-designware.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Synopsys DesignWare I2C adapter driver (master only).
  *
@@ -10,16 +11,6 @@
  *    Copyright (C) 2009 Provigent Ltd.
  *
  * Copyright (C) 2015 Andrey Smirnov <andrew.smirnov@gmail.com>
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
- * GNU General Public License for more details.
- *
  */
 
 #include <clock.h>
diff --git a/drivers/i2c/busses/i2c-gpio.c b/drivers/i2c/busses/i2c-gpio.c
index 7ccdb0b222..6ccd0cbaa3 100644
--- a/drivers/i2c/busses/i2c-gpio.c
+++ b/drivers/i2c/busses/i2c-gpio.c
@@ -1,11 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Bitbanging I2C bus driver using the GPIO API
  *
  * Copyright (C) 2007 Atmel Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
  */
 
 #include <common.h>
diff --git a/drivers/i2c/busses/i2c-imx-early.c b/drivers/i2c/busses/i2c-imx-early.c
index 472e4be83a..12c2572ac2 100644
--- a/drivers/i2c/busses/i2c-imx-early.c
+++ b/drivers/i2c/busses/i2c-imx-early.c
@@ -1,17 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * Copyright 2013 GE Intelligent Platforms, Inc
  * Copyright 2006,2009 Freescale Semiconductor, Inc.
  *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
  * Early I2C support functions to read SPD data or board
  * information.
  * Based on U-Boot drivers/i2c/fsl_i2c.c
diff --git a/drivers/i2c/busses/i2c-imx.c b/drivers/i2c/busses/i2c-imx.c
index 7d25ed3af5..a2abfa5b43 100644
--- a/drivers/i2c/busses/i2c-imx.c
+++ b/drivers/i2c/busses/i2c-imx.c
@@ -1,18 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * Copyright 2012 GE Intelligent Platforms, Inc
  * Copyright (C) 2002 Motorola GSG-China
  *               2009 Marc Kleine-Budde, Pengutronix
  *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
  * Author:
  *	Darius Augulis, Teltonika Inc.
  *
diff --git a/drivers/i2c/busses/i2c-imx.h b/drivers/i2c/busses/i2c-imx.h
index 3e3e1317f2..3b3ec483ce 100644
--- a/drivers/i2c/busses/i2c-imx.h
+++ b/drivers/i2c/busses/i2c-imx.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef I2C_IMX_H
 #define I2C_IMX_H
 
diff --git a/drivers/i2c/busses/i2c-mv64xxx.c b/drivers/i2c/busses/i2c-mv64xxx.c
index f54d81608f..0567d60ecb 100644
--- a/drivers/i2c/busses/i2c-mv64xxx.c
+++ b/drivers/i2c/busses/i2c-mv64xxx.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Driver for the i2c controller on the Marvell line of host bridges
  * (e.g, gt642[46]0, mv643[46]0, mv644[46]0, and Orion SoC family).
@@ -6,10 +7,7 @@
  *
  * Author: Mark A. Greer <mgreer@mvista.com>
  *
- * 2005 (c) MontaVista, Software, Inc.  This file is licensed under
- * the terms of the GNU General Public License version 2.  This program
- * is licensed "as is" without any warranty of any kind, whether express
- * or implied.
+ * 2005 (c) MontaVista, Software, Inc.
  */
 
 #include <common.h>
diff --git a/drivers/i2c/busses/i2c-omap.c b/drivers/i2c/busses/i2c-omap.c
index d3f525f333..29a618c8b2 100644
--- a/drivers/i2c/busses/i2c-omap.c
+++ b/drivers/i2c/busses/i2c-omap.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * TI OMAP I2C master mode driver
  *
@@ -12,16 +13,6 @@
  *	Juha Yrjölä <juha.yrjola@solidboot.com>
  *	Syed Khasim <x0khasim@ti.com>
  *	Nishant Menon <nm@ti.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
  */
 
 #include <clock.h>
diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c
index 94c982d5c2..3fd019bc62 100644
--- a/drivers/i2c/busses/i2c-tegra.c
+++ b/drivers/i2c/busses/i2c-tegra.c
@@ -1,17 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright (C) 2014 Lucas Stach <l.stach@pengutronix.de>
  *
  * Partly based on code Copyright (C) 2010 Google, Inc.
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
  */
 #include <common.h>
 #include <clock.h>
diff --git a/drivers/i2c/i2c-mux.c b/drivers/i2c/i2c-mux.c
index ab31da61d6..68ca6c2f65 100644
--- a/drivers/i2c/i2c-mux.c
+++ b/drivers/i2c/i2c-mux.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Multiplexed I2C bus driver.
  *
@@ -16,10 +17,6 @@
  *	i2c-virt.c from Kumar Gala <galak@kernel.crashing.org>
  *	i2c-virtual.c from Ken Harrenstien, Copyright (c) 2004 Google, Inc.
  *	i2c-virtual.c from Brian Kuschak <bkuschak@yahoo.com>
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2. This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
  */
 
 #include <common.h>
diff --git a/drivers/i2c/i2c-smbus.c b/drivers/i2c/i2c-smbus.c
index e8aeaa7234..652d039cb0 100644
--- a/drivers/i2c/i2c-smbus.c
+++ b/drivers/i2c/i2c-smbus.c
@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: GPL-2.0
+
 #include <common.h>
 #include <errno.h>
 #include <i2c/i2c.h>
diff --git a/drivers/i2c/i2c.c b/drivers/i2c/i2c.c
index 12aac42794..c33ce81b18 100644
--- a/drivers/i2c/i2c.c
+++ b/drivers/i2c/i2c.c
@@ -1,8 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright (C) 2009 Marc Kleine-Budde <mkl@pengutronix.de>
  *
- * This file is released under the GPLv2
- *
  * Derived from:
  * - i2c-core.c - a device driver for the iic-bus interface
  *   Copyright (C) 1995-99 Simon G. Vogl
diff --git a/drivers/i2c/muxes/Kconfig b/drivers/i2c/muxes/Kconfig
index 74b73459aa..736195f596 100644
--- a/drivers/i2c/muxes/Kconfig
+++ b/drivers/i2c/muxes/Kconfig
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
 #
 # Multiplexer I2C chip drivers configuration
 #
diff --git a/drivers/i2c/muxes/Makefile b/drivers/i2c/muxes/Makefile
index f35d40d0e3..a271c4fbcc 100644
--- a/drivers/i2c/muxes/Makefile
+++ b/drivers/i2c/muxes/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
 #
 # Makefile for multiplexer I2C chip drivers.
 
diff --git a/drivers/i2c/muxes/i2c-mux-pca954x.c b/drivers/i2c/muxes/i2c-mux-pca954x.c
index aa7dcb8c31..0d31804c10 100644
--- a/drivers/i2c/muxes/i2c-mux-pca954x.c
+++ b/drivers/i2c/muxes/i2c-mux-pca954x.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * I2C multiplexer
  *
@@ -32,10 +33,6 @@
  *	i2c-virtual_cb.c from Brian Kuschak <bkuschak@yahoo.com>
  * and
  *	pca9540.c from Jean Delvare <jdelvare@suse.de>.
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2. This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
  */
 
 #include <common.h>