ASoC: imx-ssi: Switch to SPDX identifier

Adopt the SPDX license identifier headers to ease license compliance
management.

Signed-off-by: Andra Danciu <andradanciu1997@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/fsl/imx-ssi.c

@@ -1,35 +1,28 @@
-/*
+// SPDX-License-Identifier: GPL-2.0+
- * imx-ssi.c  --  ALSA Soc Audio Layer
+//
- *
+// imx-ssi.c  --  ALSA Soc Audio Layer
- * Copyright 2009 Sascha Hauer <s.hauer@pengutronix.de>
+//
- *
+// Copyright 2009 Sascha Hauer <s.hauer@pengutronix.de>
- * This code is based on code copyrighted by Freescale,
+//
- * Liam Girdwood, Javier Martin and probably others.
+// This code is based on code copyrighted by Freescale,
- *
+// Liam Girdwood, Javier Martin and probably others.
- *  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
+// The i.MX SSI core has some nasty limitations in AC97 mode. While most
- *  Free Software Foundation;  either version 2 of the  License, or (at your
+// sane processor vendors have a FIFO per AC97 slot, the i.MX has only
- *  option) any later version.
+// one FIFO which combines all valid receive slots. We cannot even select
- *
+// which slots we want to receive. The WM9712 with which this driver
- *
+// was developed with always sends GPIO status data in slot 12 which
- * The i.MX SSI core has some nasty limitations in AC97 mode. While most
+// we receive in our (PCM-) data stream. The only chance we have is to
- * sane processor vendors have a FIFO per AC97 slot, the i.MX has only
+// manually skip this data in the FIQ handler. With sampling rates different
- * one FIFO which combines all valid receive slots. We cannot even select
+// from 48000Hz not every frame has valid receive data, so the ratio
- * which slots we want to receive. The WM9712 with which this driver
+// between pcm data and GPIO status data changes. Our FIQ handler is not
- * was developed with always sends GPIO status data in slot 12 which
+// able to handle this, hence this driver only works with 48000Hz sampling
- * we receive in our (PCM-) data stream. The only chance we have is to
+// rate.
- * manually skip this data in the FIQ handler. With sampling rates different
+// Reading and writing AC97 registers is another challenge. The core
- * from 48000Hz not every frame has valid receive data, so the ratio
+// provides us status bits when the read register is updated with *another*
- * between pcm data and GPIO status data changes. Our FIQ handler is not
+// value. When we read the same register two times (and the register still
- * able to handle this, hence this driver only works with 48000Hz sampling
+// contains the same value) these status bits are not set. We work
- * rate.
+// around this by not polling these bits but only wait a fixed delay.
- * Reading and writing AC97 registers is another challenge. The core
- * provides us status bits when the read register is updated with *another*
- * value. When we read the same register two times (and the register still
- * contains the same value) these status bits are not set. We work
- * around this by not polling these bits but only wait a fixed delay.
- *
- */
 
 #include <linux/clk.h>
 #include <linux/delay.h>

sound/soc/fsl/imx-ssi.h

@@ -1,8 +1,4 @@
-/*
+/* SPDX-License-Identifier: GPL-2.0 */
- * 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.
- */
 
 #ifndef _IMX_SSI_H
 #define _IMX_SSI_H