ALSA: hda: Move controller drivers into sound/hda/controllers directory

Now HD-audio controller drivers are moved into sound/hda/controllers
directory as a part of HD-audio code reorganization. Most of drivers
are independent from PCI bus, hence it makes more sense to put under
sound/hda.

The hda_ prefix is dropped from most of files at moving, as it's
more or less superfluous.

Signed-off-by: Takashi Iwai <[e-mail]>
Link: https://patch.msgid.link/[e-mail]

sound/hda/Kconfig

···
 menu "HD-Audio"
 
 source "sound/hda/common/Kconfig"
+source "sound/hda/controllers/Kconfig"
 source "sound/hda/core/Kconfig"
 
 endmenu

sound/hda/Makefile

···
 # SPDX-License-Identifier: GPL-2.0
 obj-y += core/
 obj-$(CONFIG_SND_HDA) += common/
+# this must be the last entry after codec drivers;
+# otherwise the codec patches won't be hooked before the PCI probe
+# when built in kernel
+obj-$(CONFIG_SND_HDA) += controllers/

sound/hda/controllers/Kconfig

···
+# SPDX-License-Identifier: GPL-2.0-only
+config SND_HDA_INTEL
+	tristate "HD Audio PCI"
+	depends on SND_PCI
+	select SND_HDA
+	select SND_INTEL_DSP_CONFIG
+	help
+	  Say Y here to include support for Intel "High Definition
+	  Audio" (Azalia) and its compatible devices.
+
+	  This option enables the HD-audio controller.  Don't forget
+	  to choose the appropriate HD-audio codec options.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called snd-hda-intel.
+
+config SND_HDA_TEGRA
+	tristate "NVIDIA Tegra HD Audio"
+	depends on ARCH_TEGRA
+	select SND_HDA
+	select SND_HDA_ALIGNED_MMIO
+	help
+	  Say Y here to support the HDA controller present in NVIDIA
+	  Tegra SoCs
+
+	  This options enables support for the HD Audio controller
+	  present in some NVIDIA Tegra SoCs, used to communicate audio
+	  to the HDMI output.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called snd-hda-tegra.
+
+config SND_HDA_ACPI
+	tristate "HD Audio ACPI"
+	depends on ACPI
+	select SND_HDA
+	help
+	  Say Y here to include support for Azalia-compatible HDA controllers
+	  which are advertised via ACPI objects.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called snd-hda-acpi.

sound/hda/controllers/Makefile

···
+# SPDX-License-Identifier: GPL-2.0
+snd-hda-intel-y := intel.o
+snd-hda-tegra-y := tegra.o
+snd-hda-acpi-y := acpi.o
+
+subdir-ccflags-y += -I$(src)/../common
+
+# for trace-points
+CFLAGS_intel.o := -I$(src)
+
+obj-$(CONFIG_SND_HDA_INTEL) += snd-hda-intel.o
+obj-$(CONFIG_SND_HDA_TEGRA) += snd-hda-tegra.o
+obj-$(CONFIG_SND_HDA_ACPI) += snd-hda-acpi.o

sound/pci/hda/Kconfig

···
 config SND_HDA_GENERIC_LEDS
        bool
 
-config SND_HDA_INTEL
-	tristate "HD Audio PCI"
-	depends on SND_PCI
-	select SND_HDA
-	select SND_INTEL_DSP_CONFIG
-	help
-	  Say Y here to include support for Intel "High Definition
-	  Audio" (Azalia) and its compatible devices.
-
-	  This option enables the HD-audio controller.  Don't forget
-	  to choose the appropriate codec options below.
-
-	  To compile this driver as a module, choose M here: the module
-	  will be called snd-hda-intel.
-
-config SND_HDA_TEGRA
-	tristate "NVIDIA Tegra HD Audio"
-	depends on ARCH_TEGRA
-	select SND_HDA
-	select SND_HDA_ALIGNED_MMIO
-	help
-	  Say Y here to support the HDA controller present in NVIDIA
-	  Tegra SoCs
-
-	  This options enables support for the HD Audio controller
-	  present in some NVIDIA Tegra SoCs, used to communicate audio
-	  to the HDMI output.
-
-	  To compile this driver as a module, choose M here: the module
-	  will be called snd-hda-tegra.
-
-config SND_HDA_ACPI
-	tristate "HD Audio ACPI"
-	depends on ACPI
-	select SND_HDA
-	help
-	  Say Y here to include support for Azalia-compatible HDA controllers
-	  which are advertised via ACPI objects.
-
-	  To compile this driver as a module, choose M here: the module
-	  will be called snd-hda-acpi.
-
 if SND_HDA
 
 config SND_HDA_CIRRUS_SCODEC

sound/pci/hda/Makefile

···
 # SPDX-License-Identifier: GPL-2.0
-snd-hda-intel-y := hda_intel.o
-snd-hda-tegra-y := hda_tegra.o
-snd-hda-acpi-y := hda_acpi.o
-
-# for trace-points
-CFLAGS_hda_intel.o := -I$(src)
-
 subdir-ccflags-y += -I$(src)/../../hda/common
 
 snd-hda-codec-generic-y :=	hda_generic.o
···
 obj-$(CONFIG_SND_HDA_SCODEC_TAS2781) += snd-hda-scodec-tas2781.o
 obj-$(CONFIG_SND_HDA_SCODEC_TAS2781_I2C) += snd-hda-scodec-tas2781-i2c.o
 obj-$(CONFIG_SND_HDA_SCODEC_TAS2781_SPI) += snd-hda-scodec-tas2781-spi.o
-
-# this must be the last entry after codec drivers;
-# otherwise the codec patches won't be hooked before the PCI probe
-# when built in kernel
-obj-$(CONFIG_SND_HDA_INTEL) += snd-hda-intel.o
-obj-$(CONFIG_SND_HDA_TEGRA) += snd-hda-tegra.o
-obj-$(CONFIG_SND_HDA_ACPI) += snd-hda-acpi.o

sound/pci/hda/hda_intel.c sound/hda/controllers/intel.c

···
 #include <linux/apple-gmux.h>
 #include <linux/firmware.h>
 #include <sound/hda_codec.h>
-#include "hda_controller.h"
-#include "hda_intel.h"
+#include "intel.h"
 
 #define CREATE_TRACE_POINTS
-#include "hda_intel_trace.h"
+#include "intel_trace.h"
 
 /* position fix mode */
 enum {

sound/pci/hda/hda_intel_trace.h sound/hda/controllers/intel_trace.h

···
 /* SPDX-License-Identifier: GPL-2.0 */
 #undef TRACE_SYSTEM
 #define TRACE_SYSTEM hda_intel
-#define TRACE_INCLUDE_FILE hda_intel_trace
+#define TRACE_INCLUDE_FILE intel_trace
 
 #if !defined(_TRACE_HDA_INTEL_H) || defined(TRACE_HEADER_MULTI_READ)
 #define _TRACE_HDA_INTEL_H