Merge tag 'asoc-v4.15' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Updates for v4.15

The biggest thing this release has been the conversion of the AC98 bus
to the driver model, that's been a long time coming so thanks to Robert
Jarzmik for his dedication there.  Due to there being some AC97 MFD
there's a few fairly large changes in input and the MFD layer, mainly to
the wm97xx driver.

There's also some drivers/drm changes to support the new AMD Stoney
platform, these are shared with the DRM subsystem and should be being
merged via both.

Within the subsystem the overwhelming bulk of the changes is in the
Intel drivers which continue to need lots of cleanups and fixes, this
release they've also gained support for their open source firmware.
There's also some large changs in the core as Morimoto-san continues to
mirror operations into the component level in preparation for conversion
of drivers to that.

 - The AC97 bus has finally caught up with the driver model thanks to
   some dedicated and persistent work from Robert Jarzmik.
 - Continued work from Morimoto-san on moving us towards being able to
   use components for everything.
 - Lots of cleanups for the Intel platform code, including support for
   their open source audio firmware.
 - Support for scaling MCLK with sample rate in simple-card.
 - Support for AMD Stoney platform.

51 files changed, 51 insertions, 0 deletions

diff --git a/sound/pci/Makefile b/sound/pci/Makefile
index 54fe325e3aa5..04cac7469139 100644
--- a/sound/pci/Makefile
+++ b/sound/pci/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
 #
 # Makefile for ALSA
 # Copyright (c) 2001 by Jaroslav Kysela <perex@perex.cz>
diff --git a/sound/pci/ad1889.h b/sound/pci/ad1889.h
index 5e6dad5341a1..d6e8d6c19adc 100644
--- a/sound/pci/ad1889.h
+++ b/sound/pci/ad1889.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /* Analog Devices 1889 audio driver
  * Copyright (C) 2004, Kyle McMartin <kyle@parisc-linux.org>
  */
diff --git a/sound/pci/asihpi/hpi_version.h b/sound/pci/asihpi/hpi_version.h
index 6623ab110038..016bc55457e3 100644
--- a/sound/pci/asihpi/hpi_version.h
+++ b/sound/pci/asihpi/hpi_version.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /** HPI Version Definitions
 Development releases have odd minor version.
 Production releases have even minor version.
diff --git a/sound/pci/asihpi/hpifunc.c b/sound/pci/asihpi/hpifunc.c
index f9b57647b319..1de05383126a 100644
--- a/sound/pci/asihpi/hpifunc.c
+++ b/sound/pci/asihpi/hpifunc.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 
 #include "hpi_internal.h"
 #include "hpimsginit.h"
diff --git a/sound/pci/au88x0/Makefile b/sound/pci/au88x0/Makefile
index d0a66bc5d4a7..78ab11562f4d 100644
--- a/sound/pci/au88x0/Makefile
+++ b/sound/pci/au88x0/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
 snd-au8810-objs := au8810.o
 snd-au8820-objs := au8820.o
 snd-au8830-objs := au8830.o
diff --git a/sound/pci/au88x0/au8810.c b/sound/pci/au88x0/au8810.c
index 1b2e34069eb3..b2bfa50bfe30 100644
--- a/sound/pci/au88x0/au8810.c
+++ b/sound/pci/au88x0/au8810.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #include "au8810.h"
 #include "au88x0.h"
 static const struct pci_device_id snd_vortex_ids[] = {
diff --git a/sound/pci/au88x0/au8810.h b/sound/pci/au88x0/au8810.h
index 79fbee3845eb..94f11032067e 100644
--- a/sound/pci/au88x0/au8810.h
+++ b/sound/pci/au88x0/au8810.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
     Aureal Advantage Soundcard driver.
  */
diff --git a/sound/pci/au88x0/au8820.c b/sound/pci/au88x0/au8820.c
index 74c53fa5f06b..dbc2263b49c6 100644
--- a/sound/pci/au88x0/au8820.c
+++ b/sound/pci/au88x0/au8820.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #include "au8820.h"
 #include "au88x0.h"
 static const struct pci_device_id snd_vortex_ids[] = {
diff --git a/sound/pci/au88x0/au8820.h b/sound/pci/au88x0/au8820.h
index cafdb9668a34..8a128e8febbb 100644
--- a/sound/pci/au88x0/au8820.h
+++ b/sound/pci/au88x0/au8820.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
     Aureal Vortex Soundcard driver.
 
diff --git a/sound/pci/au88x0/au8830.c b/sound/pci/au88x0/au8830.c
index 56f675aad3ad..e963c4e2f026 100644
--- a/sound/pci/au88x0/au8830.c
+++ b/sound/pci/au88x0/au8830.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #include "au8830.h"
 #include "au88x0.h"
 static const struct pci_device_id snd_vortex_ids[] = {
diff --git a/sound/pci/au88x0/au8830.h b/sound/pci/au88x0/au8830.h
index 999b29ab34ad..40f671ffd45a 100644
--- a/sound/pci/au88x0/au8830.h
+++ b/sound/pci/au88x0/au8830.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
     Aureal Vortex Soundcard driver.
 
diff --git a/sound/pci/au88x0/au88x0_eq.h b/sound/pci/au88x0/au88x0_eq.h
index 474cd0046294..797cdae1db98 100644
--- a/sound/pci/au88x0/au88x0_eq.h
+++ b/sound/pci/au88x0/au88x0_eq.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef AU88X0_EQ_H
 #define AU88X0_EQ_H
 
diff --git a/sound/pci/au88x0/au88x0_eqdata.c b/sound/pci/au88x0/au88x0_eqdata.c
index ce8dca8ce1e2..49a52d298b1a 100644
--- a/sound/pci/au88x0/au88x0_eqdata.c
+++ b/sound/pci/au88x0/au88x0_eqdata.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* Data structs */
 
 static u16 asEqCoefsZeros[50] = {
diff --git a/sound/pci/au88x0/au88x0_mixer.c b/sound/pci/au88x0/au88x0_mixer.c
index a58298cfe7e0..60dd8a091bc3 100644
--- a/sound/pci/au88x0/au88x0_mixer.c
+++ b/sound/pci/au88x0/au88x0_mixer.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Vortex Mixer support.
  *
diff --git a/sound/pci/au88x0/au88x0_wt.h b/sound/pci/au88x0/au88x0_wt.h
index 38d98f88a95c..7b2cffad8643 100644
--- a/sound/pci/au88x0/au88x0_wt.h
+++ b/sound/pci/au88x0/au88x0_wt.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /***************************************************************************
  *           WT register offsets.
  *
diff --git a/sound/pci/azt3328.h b/sound/pci/azt3328.h
index 6f46b97650cc..6f9022784499 100644
--- a/sound/pci/azt3328.h
+++ b/sound/pci/azt3328.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __SOUND_AZT3328_H
 #define __SOUND_AZT3328_H
 
diff --git a/sound/pci/cs5535audio/cs5535audio.h b/sound/pci/cs5535audio/cs5535audio.h
index 0579daa62215..f4fcdf93f3c8 100644
--- a/sound/pci/cs5535audio/cs5535audio.h
+++ b/sound/pci/cs5535audio/cs5535audio.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __SOUND_CS5535AUDIO_H
 #define __SOUND_CS5535AUDIO_H
 
diff --git a/sound/pci/ctxfi/cttimer.h b/sound/pci/ctxfi/cttimer.h
index 979348229291..9c5cb403b646 100644
--- a/sound/pci/ctxfi/cttimer.h
+++ b/sound/pci/ctxfi/cttimer.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * Timer handling
  */
diff --git a/sound/pci/echoaudio/Makefile b/sound/pci/echoaudio/Makefile
index 1361de77e0cd..4865b8fe7434 100644
--- a/sound/pci/echoaudio/Makefile
+++ b/sound/pci/echoaudio/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
 #
 # Makefile for ALSA Echoaudio soundcard drivers
 # Copyright (c) 2003 by Giuliano Pochini <pochini@shiny.it>
diff --git a/sound/pci/emu10k1/Makefile b/sound/pci/emu10k1/Makefile
index 29b44ca27010..17d5527be319 100644
--- a/sound/pci/emu10k1/Makefile
+++ b/sound/pci/emu10k1/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
 #
 # Makefile for ALSA
 # Copyright (c) 2001 by Jaroslav Kysela <perex@perex.cz>
diff --git a/sound/pci/hda/Makefile b/sound/pci/hda/Makefile
index 6d83c6e0396a..b57432f00056 100644
--- a/sound/pci/hda/Makefile
+++ b/sound/pci/hda/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
 snd-hda-intel-objs := hda_intel.o
 snd-hda-tegra-objs := hda_tegra.o
 
diff --git a/sound/pci/hda/dell_wmi_helper.c b/sound/pci/hda/dell_wmi_helper.c
index 44b1e15682b9..1b48a8c19d28 100644
--- a/sound/pci/hda/dell_wmi_helper.c
+++ b/sound/pci/hda/dell_wmi_helper.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* Helper functions for Dell Mic Mute LED control;
  * to be included from codec driver
  */
diff --git a/sound/pci/hda/hda_controller_trace.h b/sound/pci/hda/hda_controller_trace.h
index 3e18d99bfb70..bf48304e230a 100644
--- a/sound/pci/hda/hda_controller_trace.h
+++ b/sound/pci/hda/hda_controller_trace.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #undef TRACE_SYSTEM
 #define TRACE_SYSTEM hda_controller
 #define TRACE_INCLUDE_FILE hda_controller_trace
diff --git a/sound/pci/hda/hda_intel_trace.h b/sound/pci/hda/hda_intel_trace.h
index 0922d8b1b17d..73a7adfa192d 100644
--- a/sound/pci/hda/hda_intel_trace.h
+++ b/sound/pci/hda/hda_intel_trace.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #undef TRACE_SYSTEM
 #define TRACE_SYSTEM hda_intel
 #define TRACE_INCLUDE_FILE hda_intel_trace
diff --git a/sound/pci/hda/local.h b/sound/pci/hda/local.h
index 28cb7f98982e..3b8b7d78f9e0 100644
--- a/sound/pci/hda/local.h
+++ b/sound/pci/hda/local.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  */
 
diff --git a/sound/pci/hda/thinkpad_helper.c b/sound/pci/hda/thinkpad_helper.c
index 4d9d320a7971..65bb3ac6af4c 100644
--- a/sound/pci/hda/thinkpad_helper.c
+++ b/sound/pci/hda/thinkpad_helper.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* Helper functions for Thinkpad LED control;
  * to be included from codec driver
  */
diff --git a/sound/pci/ice1712/Makefile b/sound/pci/ice1712/Makefile
index 7e50c1324556..1196f22a9b45 100644
--- a/sound/pci/ice1712/Makefile
+++ b/sound/pci/ice1712/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
 #
 # Makefile for ALSA
 # Copyright (c) 2001 by Jaroslav Kysela <perex@perex.cz>
diff --git a/sound/pci/ice1712/juli.h b/sound/pci/ice1712/juli.h
index d9f8534fd92e..9c22d4e73ee3 100644
--- a/sound/pci/ice1712/juli.h
+++ b/sound/pci/ice1712/juli.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __SOUND_JULI_H
 #define __SOUND_JULI_H
 
diff --git a/sound/pci/ice1712/maya44.h b/sound/pci/ice1712/maya44.h
index eafd03a8f4b5..f5a97d987a6f 100644
--- a/sound/pci/ice1712/maya44.h
+++ b/sound/pci/ice1712/maya44.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __SOUND_MAYA44_H
 #define __SOUND_MAYA44_H
 
diff --git a/sound/pci/ice1712/prodigy192.h b/sound/pci/ice1712/prodigy192.h
index 16a53b459c72..7bfd769ba982 100644
--- a/sound/pci/ice1712/prodigy192.h
+++ b/sound/pci/ice1712/prodigy192.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __SOUND_PRODIGY192_H
 #define __SOUND_PRODIGY192_H
 
diff --git a/sound/pci/ice1712/psc724.h b/sound/pci/ice1712/psc724.h
index 858e5fd0eebb..e6ce335ae87e 100644
--- a/sound/pci/ice1712/psc724.h
+++ b/sound/pci/ice1712/psc724.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __SOUND_PSC724_H
 #define __SOUND_PSC724_H
 
diff --git a/sound/pci/ice1712/quartet.h b/sound/pci/ice1712/quartet.h
index 80809b72439a..a1c2fe27185d 100644
--- a/sound/pci/ice1712/quartet.h
+++ b/sound/pci/ice1712/quartet.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __SOUND_QTET_H
 #define __SOUND_QTET_H
 
diff --git a/sound/pci/ice1712/se.h b/sound/pci/ice1712/se.h
index 0b0a9dabdcfb..61348ecef1e0 100644
--- a/sound/pci/ice1712/se.h
+++ b/sound/pci/ice1712/se.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __SOUND_SE_H
 #define __SOUND_SE_H
 
diff --git a/sound/pci/ice1712/stac946x.h b/sound/pci/ice1712/stac946x.h
index 5b390952d0e4..58f9f17a258a 100644
--- a/sound/pci/ice1712/stac946x.h
+++ b/sound/pci/ice1712/stac946x.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __SOUND_STAC946X_H
 #define __SOUND_STAC946X_H
 
diff --git a/sound/pci/ice1712/wtm.h b/sound/pci/ice1712/wtm.h
index 423c1a204c0b..1cfcbde15f42 100644
--- a/sound/pci/ice1712/wtm.h
+++ b/sound/pci/ice1712/wtm.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __SOUND_WTM_H
 #define __SOUND_WTM_H
 
diff --git a/sound/pci/nm256/nm256_coef.c b/sound/pci/nm256/nm256_coef.c
index 747d5d6ccfa0..c757252119b1 100644
--- a/sound/pci/nm256/nm256_coef.c
+++ b/sound/pci/nm256/nm256_coef.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #define NM_TOTAL_COEFF_COUNT 0x3158
 
 static char coefficients[NM_TOTAL_COEFF_COUNT * 4] = { 
diff --git a/sound/pci/oxygen/Makefile b/sound/pci/oxygen/Makefile
index ab085d753661..0dfc4f840992 100644
--- a/sound/pci/oxygen/Makefile
+++ b/sound/pci/oxygen/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
 snd-oxygen-lib-objs := oxygen_io.o oxygen_lib.o oxygen_mixer.o oxygen_pcm.o
 snd-oxygen-objs := oxygen.o xonar_dg_mixer.o xonar_dg.o
 snd-se6x-objs := se6x.o
diff --git a/sound/pci/oxygen/ak4396.h b/sound/pci/oxygen/ak4396.h
index 551c1cf8e2e0..a51223461b11 100644
--- a/sound/pci/oxygen/ak4396.h
+++ b/sound/pci/oxygen/ak4396.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef AK4396_H_INCLUDED
 #define AK4396_H_INCLUDED
 
diff --git a/sound/pci/oxygen/cm9780.h b/sound/pci/oxygen/cm9780.h
index 144596799676..7efb119d1763 100644
--- a/sound/pci/oxygen/cm9780.h
+++ b/sound/pci/oxygen/cm9780.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef CM9780_H_INCLUDED
 #define CM9780_H_INCLUDED
 
diff --git a/sound/pci/oxygen/cs2000.h b/sound/pci/oxygen/cs2000.h
index c3501bdb5edc..aca04794ce28 100644
--- a/sound/pci/oxygen/cs2000.h
+++ b/sound/pci/oxygen/cs2000.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef CS2000_H_INCLUDED
 #define CS2000_H_INCLUDED
 
diff --git a/sound/pci/oxygen/cs4245.h b/sound/pci/oxygen/cs4245.h
index 99098657695a..bb9f2c5b5819 100644
--- a/sound/pci/oxygen/cs4245.h
+++ b/sound/pci/oxygen/cs4245.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #define CS4245_CHIP_ID		0x01
 #define CS4245_POWER_CTRL	0x02
 #define CS4245_DAC_CTRL_1	0x03
diff --git a/sound/pci/oxygen/cs4362a.h b/sound/pci/oxygen/cs4362a.h
index 6a4fedf5e1ec..1aef15e04dfb 100644
--- a/sound/pci/oxygen/cs4362a.h
+++ b/sound/pci/oxygen/cs4362a.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /* register 01h */
 #define CS4362A_PDN		0x01
 #define CS4362A_DAC1_DIS	0x02
diff --git a/sound/pci/oxygen/cs4398.h b/sound/pci/oxygen/cs4398.h
index 5faf5efc8826..76cb9d7af0d7 100644
--- a/sound/pci/oxygen/cs4398.h
+++ b/sound/pci/oxygen/cs4398.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /* register 1 */
 #define CS4398_REV_MASK		0x07
 #define CS4398_PART_MASK	0xf8
diff --git a/sound/pci/oxygen/oxygen.h b/sound/pci/oxygen/oxygen.h
index 293d0b9a50c3..06bf7e5744d0 100644
--- a/sound/pci/oxygen/oxygen.h
+++ b/sound/pci/oxygen/oxygen.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef OXYGEN_H_INCLUDED
 #define OXYGEN_H_INCLUDED
 
diff --git a/sound/pci/oxygen/oxygen_regs.h b/sound/pci/oxygen/oxygen_regs.h
index 8c191badaae8..eca9d943f5c7 100644
--- a/sound/pci/oxygen/oxygen_regs.h
+++ b/sound/pci/oxygen/oxygen_regs.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef OXYGEN_REGS_H_INCLUDED
 #define OXYGEN_REGS_H_INCLUDED
 
diff --git a/sound/pci/oxygen/pcm1796.h b/sound/pci/oxygen/pcm1796.h
index 698bf46c710c..34d07dd2d22e 100644
--- a/sound/pci/oxygen/pcm1796.h
+++ b/sound/pci/oxygen/pcm1796.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef PCM1796_H_INCLUDED
 #define PCM1796_H_INCLUDED
 
diff --git a/sound/pci/oxygen/wm8766.h b/sound/pci/oxygen/wm8766.h
index e0e849a7eaeb..be83ad49dbb1 100644
--- a/sound/pci/oxygen/wm8766.h
+++ b/sound/pci/oxygen/wm8766.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef WM8766_H_INCLUDED
 #define WM8766_H_INCLUDED
 
diff --git a/sound/pci/oxygen/wm8785.h b/sound/pci/oxygen/wm8785.h
index 8c23e315ae66..21b932566598 100644
--- a/sound/pci/oxygen/wm8785.h
+++ b/sound/pci/oxygen/wm8785.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef WM8785_H_INCLUDED
 #define WM8785_H_INCLUDED
 
diff --git a/sound/pci/oxygen/xonar.h b/sound/pci/oxygen/xonar.h
index 0434c207e811..3e373880c187 100644
--- a/sound/pci/oxygen/xonar.h
+++ b/sound/pci/oxygen/xonar.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef XONAR_H_INCLUDED
 #define XONAR_H_INCLUDED
 
diff --git a/sound/pci/oxygen/xonar_dg.h b/sound/pci/oxygen/xonar_dg.h
index 5a07cda011b3..24d97721c247 100644
--- a/sound/pci/oxygen/xonar_dg.h
+++ b/sound/pci/oxygen/xonar_dg.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef XONAR_DG_H_INCLUDED
 #define XONAR_DG_H_INCLUDED
 
diff --git a/sound/pci/rme9652/Makefile b/sound/pci/rme9652/Makefile
index dcba56040205..a3351447ddc0 100644
--- a/sound/pci/rme9652/Makefile
+++ b/sound/pci/rme9652/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
 #
 # Makefile for ALSA
 # Copyright (c) 2001 by Jaroslav Kysela <perex@perex.cz>