Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

5 files changed, 883 insertions, 0 deletions

diff --git a/include/sound/ac97/codec.h b/include/sound/ac97/codec.h
new file mode 100644
index 0000000000..2fc641cb19
--- /dev/null
+++ b/include/sound/ac97/codec.h
@@ -0,0 +1,116 @@
+/* SPDX-License-Identifier: GPL-2.0
+ *
+ *  Copyright (C) 2016 Robert Jarzmik <robert.jarzmik@free.fr>
+ */
+
+#ifndef __SOUND_AC97_CODEC2_H
+#define __SOUND_AC97_CODEC2_H
+
+#include <linux/device.h>
+
+#define AC97_ID(vendor_id1, vendor_id2) \
+	((((vendor_id1) & 0xffff) << 16) | ((vendor_id2) & 0xffff))
+#define AC97_DRIVER_ID(vendor_id1, vendor_id2, mask_id1, mask_id2, _data) \
+	{ .id = (((vendor_id1) & 0xffff) << 16) | ((vendor_id2) & 0xffff), \
+	  .mask = (((mask_id1) & 0xffff) << 16) | ((mask_id2) & 0xffff), \
+	  .data = (_data) }
+
+struct ac97_controller;
+struct clk;
+
+/**
+ * struct ac97_id - matches a codec device and driver on an ac97 bus
+ * @id: The significant bits if the codec vendor ID1 and ID2
+ * @mask: Bitmask specifying which bits of the id field are significant when
+ *	  matching. A driver binds to a device when :
+ *        ((vendorID1 << 8 | vendorID2) & (mask_id1 << 8 | mask_id2)) == id.
+ * @data: Private data used by the driver.
+ */
+struct ac97_id {
+	unsigned int		id;
+	unsigned int		mask;
+	void			*data;
+};
+
+/**
+ * ac97_codec_device - a ac97 codec
+ * @dev: the core device
+ * @vendor_id: the vendor_id of the codec, as sensed on the AC-link
+ * @num: the codec number, 0 is primary, 1 is first slave, etc ...
+ * @clk: the clock BIT_CLK provided by the codec
+ * @ac97_ctrl: ac97 digital controller on the same AC-link
+ *
+ * This is the device instantiated for each codec living on a AC-link. There are
+ * normally 0 to 4 codec devices per AC-link, and all of them are controlled by
+ * an AC97 digital controller.
+ */
+struct ac97_codec_device {
+	struct device		dev;
+	unsigned int		vendor_id;
+	unsigned int		num;
+	struct clk		*clk;
+	struct ac97_controller	*ac97_ctrl;
+};
+
+/**
+ * ac97_codec_driver - a ac97 codec driver
+ * @driver: the device driver structure
+ * @probe: the function called when a ac97_codec_device is matched
+ * @remove: the function called when the device is unbound/removed
+ * @shutdown: shutdown function (might be NULL)
+ * @id_table: ac97 vendor_id match table, { } member terminated
+ */
+struct ac97_codec_driver {
+	struct device_driver	driver;
+	int			(*probe)(struct ac97_codec_device *);
+	void			(*remove)(struct ac97_codec_device *dev);
+	void			(*shutdown)(struct ac97_codec_device *);
+	const struct ac97_id	*id_table;
+};
+
+static inline struct ac97_codec_device *to_ac97_device(struct device *d)
+{
+	return container_of(d, struct ac97_codec_device, dev);
+}
+
+static inline struct ac97_codec_driver *to_ac97_driver(struct device_driver *d)
+{
+	return container_of(d, struct ac97_codec_driver, driver);
+}
+
+#if IS_ENABLED(CONFIG_AC97_BUS_NEW)
+int snd_ac97_codec_driver_register(struct ac97_codec_driver *drv);
+void snd_ac97_codec_driver_unregister(struct ac97_codec_driver *drv);
+#else
+static inline int
+snd_ac97_codec_driver_register(struct ac97_codec_driver *drv)
+{
+	return 0;
+}
+static inline void
+snd_ac97_codec_driver_unregister(struct ac97_codec_driver *drv)
+{
+}
+#endif
+
+
+static inline struct device *
+ac97_codec_dev2dev(struct ac97_codec_device *adev)
+{
+	return &adev->dev;
+}
+
+static inline void *ac97_get_drvdata(struct ac97_codec_device *adev)
+{
+	return dev_get_drvdata(ac97_codec_dev2dev(adev));
+}
+
+static inline void ac97_set_drvdata(struct ac97_codec_device *adev,
+				    void *data)
+{
+	dev_set_drvdata(ac97_codec_dev2dev(adev), data);
+}
+
+void *snd_ac97_codec_get_platdata(const struct ac97_codec_device *adev);
+
+#endif
diff --git a/include/sound/ac97/compat.h b/include/sound/ac97/compat.h
new file mode 100644
index 0000000000..57e19afa31
--- /dev/null
+++ b/include/sound/ac97/compat.h
@@ -0,0 +1,17 @@
+/* SPDX-License-Identifier: GPL-2.0
+ *
+ *  Copyright (C) 2016 Robert Jarzmik <robert.jarzmik@free.fr>
+ *
+ * This file is for backward compatibility with snd_ac97 structure and its
+ * multiple usages, such as the snd_ac97_bus and snd_ac97_build_ops.
+ */
+
+#ifndef AC97_COMPAT_H
+#define AC97_COMPAT_H
+
+#include <sound/ac97_codec.h>
+
+struct snd_ac97 *snd_ac97_compat_alloc(struct ac97_codec_device *adev);
+void snd_ac97_compat_release(struct snd_ac97 *ac97);
+
+#endif
diff --git a/include/sound/ac97/controller.h b/include/sound/ac97/controller.h
new file mode 100644
index 0000000000..06b5afb7fa
--- /dev/null
+++ b/include/sound/ac97/controller.h
@@ -0,0 +1,83 @@
+/* SPDX-License-Identifier: GPL-2.0
+ *
+ * Copyright (C) 2016 Robert Jarzmik <robert.jarzmik@free.fr>
+ */
+
+#ifndef AC97_CONTROLLER_H
+#define AC97_CONTROLLER_H
+
+#include <linux/device.h>
+#include <linux/list.h>
+
+#define AC97_BUS_MAX_CODECS 4
+#define AC97_SLOTS_AVAILABLE_ALL 0xf
+
+struct ac97_controller_ops;
+
+/**
+ * struct ac97_controller - The AC97 controller of the AC-Link
+ * @ops:		the AC97 operations.
+ * @controllers:	linked list of all existing controllers.
+ * @adap:		the shell device ac97-%d, ie. ac97 adapter
+ * @nr:			the number of the shell device
+ * @slots_available:	the mask of accessible/scanable codecs.
+ * @parent:		the device providing the AC97 controller.
+ * @codecs:		the 4 possible AC97 codecs (NULL if none found).
+ * @codecs_pdata:	platform_data for each codec (NULL if no pdata).
+ *
+ * This structure is internal to AC97 bus, and should not be used by the
+ * controllers themselves, excepting for using @dev.
+ */
+struct ac97_controller {
+	const struct ac97_controller_ops *ops;
+	struct list_head controllers;
+	struct device adap;
+	int nr;
+	unsigned short slots_available;
+	struct device *parent;
+	struct ac97_codec_device *codecs[AC97_BUS_MAX_CODECS];
+	void *codecs_pdata[AC97_BUS_MAX_CODECS];
+};
+
+/**
+ * struct ac97_controller_ops - The AC97 operations
+ * @reset:	Cold reset of the AC97 AC-Link.
+ * @warm_reset:	Warm reset of the AC97 AC-Link.
+ * @read:	Read of a single AC97 register.
+ *		Returns the register value or a negative error code.
+ * @write:	Write of a single AC97 register.
+ *
+ * These are the basic operation an AC97 controller must provide for an AC97
+ * access functions. Amongst these, all but the last 2 are mandatory.
+ * The slot number is also known as the AC97 codec number, between 0 and 3.
+ */
+struct ac97_controller_ops {
+	void (*reset)(struct ac97_controller *adrv);
+	void (*warm_reset)(struct ac97_controller *adrv);
+	int (*write)(struct ac97_controller *adrv, int slot,
+		     unsigned short reg, unsigned short val);
+	int (*read)(struct ac97_controller *adrv, int slot, unsigned short reg);
+};
+
+#if IS_ENABLED(CONFIG_AC97_BUS_NEW)
+struct ac97_controller *snd_ac97_controller_register(
+	const struct ac97_controller_ops *ops, struct device *dev,
+	unsigned short slots_available, void **codecs_pdata);
+void snd_ac97_controller_unregister(struct ac97_controller *ac97_ctrl);
+#else
+static inline struct ac97_controller *
+snd_ac97_controller_register(const struct ac97_controller_ops *ops,
+			     struct device *dev,
+			     unsigned short slots_available,
+			     void **codecs_pdata)
+{
+	return ERR_PTR(-ENODEV);
+}
+
+static inline void
+snd_ac97_controller_unregister(struct ac97_controller *ac97_ctrl)
+{
+}
+#endif
+
+#endif
diff --git a/include/sound/ac97/regs.h b/include/sound/ac97/regs.h
new file mode 100644
index 0000000000..843f73f370
--- /dev/null
+++ b/include/sound/ac97/regs.h
@@ -0,0 +1,246 @@
+/* SPDX-License-Identifier: GPL-2.0+
+ *
+ *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
+ *  Universal interface for Audio Codec '97
+ *
+ *  For more details look to AC '97 component specification revision 2.1
+ *  by Intel Corporation (http://developer.intel.com).
+ */
+/*
+ *  AC'97 codec registers
+ */
+
+#define AC97_RESET		0x00	/* Reset */
+#define AC97_MASTER		0x02	/* Master Volume */
+#define AC97_HEADPHONE		0x04	/* Headphone Volume (optional) */
+#define AC97_MASTER_MONO	0x06	/* Master Volume Mono (optional) */
+#define AC97_MASTER_TONE	0x08	/* Master Tone (Bass & Treble) (optional) */
+#define AC97_PC_BEEP		0x0a	/* PC Beep Volume (optional) */
+#define AC97_PHONE		0x0c	/* Phone Volume (optional) */
+#define AC97_MIC		0x0e	/* MIC Volume */
+#define AC97_LINE		0x10	/* Line In Volume */
+#define AC97_CD			0x12	/* CD Volume */
+#define AC97_VIDEO		0x14	/* Video Volume (optional) */
+#define AC97_AUX		0x16	/* AUX Volume (optional) */
+#define AC97_PCM		0x18	/* PCM Volume */
+#define AC97_REC_SEL		0x1a	/* Record Select */
+#define AC97_REC_GAIN		0x1c	/* Record Gain */
+#define AC97_REC_GAIN_MIC	0x1e	/* Record Gain MIC (optional) */
+#define AC97_GENERAL_PURPOSE	0x20	/* General Purpose (optional) */
+#define AC97_3D_CONTROL		0x22	/* 3D Control (optional) */
+#define AC97_INT_PAGING		0x24	/* Audio Interrupt & Paging (AC'97 2.3) */
+#define AC97_POWERDOWN		0x26	/* Powerdown control / status */
+/* range 0x28-0x3a - AUDIO AC'97 2.0 extensions */
+#define AC97_EXTENDED_ID	0x28	/* Extended Audio ID */
+#define AC97_EXTENDED_STATUS	0x2a	/* Extended Audio Status and Control */
+#define AC97_PCM_FRONT_DAC_RATE 0x2c	/* PCM Front DAC Rate */
+#define AC97_PCM_SURR_DAC_RATE	0x2e	/* PCM Surround DAC Rate */
+#define AC97_PCM_LFE_DAC_RATE	0x30	/* PCM LFE DAC Rate */
+#define AC97_PCM_LR_ADC_RATE	0x32	/* PCM LR ADC Rate */
+#define AC97_PCM_MIC_ADC_RATE	0x34	/* PCM MIC ADC Rate */
+#define AC97_CENTER_LFE_MASTER	0x36	/* Center + LFE Master Volume */
+#define AC97_SURROUND_MASTER	0x38	/* Surround (Rear) Master Volume */
+#define AC97_SPDIF		0x3a	/* S/PDIF control */
+/* range 0x3c-0x58 - MODEM */
+#define AC97_EXTENDED_MID	0x3c	/* Extended Modem ID */
+#define AC97_EXTENDED_MSTATUS	0x3e	/* Extended Modem Status and Control */
+#define AC97_LINE1_RATE		0x40	/* Line1 DAC/ADC Rate */
+#define AC97_LINE2_RATE		0x42	/* Line2 DAC/ADC Rate */
+#define AC97_HANDSET_RATE	0x44	/* Handset DAC/ADC Rate */
+#define AC97_LINE1_LEVEL	0x46	/* Line1 DAC/ADC Level */
+#define AC97_LINE2_LEVEL	0x48	/* Line2 DAC/ADC Level */
+#define AC97_HANDSET_LEVEL	0x4a	/* Handset DAC/ADC Level */
+#define AC97_GPIO_CFG		0x4c	/* GPIO Configuration */
+#define AC97_GPIO_POLARITY	0x4e	/* GPIO Pin Polarity/Type, 0=low, 1=high active */
+#define AC97_GPIO_STICKY	0x50	/* GPIO Pin Sticky, 0=not, 1=sticky */
+#define AC97_GPIO_WAKEUP	0x52	/* GPIO Pin Wakeup, 0=no int, 1=yes int */
+#define AC97_GPIO_STATUS	0x54	/* GPIO Pin Status, slot 12 */
+#define AC97_MISC_AFE		0x56	/* Miscellaneous Modem AFE Status and Control */
+/* range 0x5a-0x7b - Vendor Specific */
+#define AC97_VENDOR_ID1		0x7c	/* Vendor ID1 */
+#define AC97_VENDOR_ID2		0x7e	/* Vendor ID2 / revision */
+/* range 0x60-0x6f (page 1) - extended codec registers */
+#define AC97_CODEC_CLASS_REV	0x60	/* Codec Class/Revision */
+#define AC97_PCI_SVID		0x62	/* PCI Subsystem Vendor ID */
+#define AC97_PCI_SID		0x64	/* PCI Subsystem ID */
+#define AC97_FUNC_SELECT	0x66	/* Function Select */
+#define AC97_FUNC_INFO		0x68	/* Function Information */
+#define AC97_SENSE_INFO		0x6a	/* Sense Details */
+
+/* volume controls */
+#define AC97_MUTE_MASK_MONO	0x8000
+#define AC97_MUTE_MASK_STEREO	0x8080
+
+/* slot allocation */
+#define AC97_SLOT_TAG		0
+#define AC97_SLOT_CMD_ADDR	1
+#define AC97_SLOT_CMD_DATA	2
+#define AC97_SLOT_PCM_LEFT	3
+#define AC97_SLOT_PCM_RIGHT	4
+#define AC97_SLOT_MODEM_LINE1	5
+#define AC97_SLOT_PCM_CENTER	6
+#define AC97_SLOT_MIC		6	/* input */
+#define AC97_SLOT_SPDIF_LEFT1	6
+#define AC97_SLOT_PCM_SLEFT	7	/* surround left */
+#define AC97_SLOT_PCM_LEFT_0	7	/* double rate operation */
+#define AC97_SLOT_SPDIF_LEFT	7
+#define AC97_SLOT_PCM_SRIGHT	8	/* surround right */
+#define AC97_SLOT_PCM_RIGHT_0	8	/* double rate operation */
+#define AC97_SLOT_SPDIF_RIGHT	8
+#define AC97_SLOT_LFE		9
+#define AC97_SLOT_SPDIF_RIGHT1	9
+#define AC97_SLOT_MODEM_LINE2	10
+#define AC97_SLOT_PCM_LEFT_1	10	/* double rate operation */
+#define AC97_SLOT_SPDIF_LEFT2	10
+#define AC97_SLOT_HANDSET	11	/* output */
+#define AC97_SLOT_PCM_RIGHT_1	11	/* double rate operation */
+#define AC97_SLOT_SPDIF_RIGHT2	11
+#define AC97_SLOT_MODEM_GPIO	12	/* modem GPIO */
+#define AC97_SLOT_PCM_CENTER_1	12	/* double rate operation */
+
+/* basic capabilities (reset register) */
+#define AC97_BC_DEDICATED_MIC	0x0001	/* Dedicated Mic PCM In Channel */
+#define AC97_BC_RESERVED1	0x0002	/* Reserved (was Modem Line Codec support) */
+#define AC97_BC_BASS_TREBLE	0x0004	/* Bass & Treble Control */
+#define AC97_BC_SIM_STEREO	0x0008	/* Simulated stereo */
+#define AC97_BC_HEADPHONE	0x0010	/* Headphone Out Support */
+#define AC97_BC_LOUDNESS	0x0020	/* Loudness (bass boost) Support */
+#define AC97_BC_16BIT_DAC	0x0000	/* 16-bit DAC resolution */
+#define AC97_BC_18BIT_DAC	0x0040	/* 18-bit DAC resolution */
+#define AC97_BC_20BIT_DAC	0x0080	/* 20-bit DAC resolution */
+#define AC97_BC_DAC_MASK	0x00c0
+#define AC97_BC_16BIT_ADC	0x0000	/* 16-bit ADC resolution */
+#define AC97_BC_18BIT_ADC	0x0100	/* 18-bit ADC resolution */
+#define AC97_BC_20BIT_ADC	0x0200	/* 20-bit ADC resolution */
+#define AC97_BC_ADC_MASK	0x0300
+#define AC97_BC_3D_TECH_ID_MASK	0x7c00	/* Per-vendor ID of 3D enhancement */
+
+/* general purpose */
+#define AC97_GP_DRSS_MASK	0x0c00	/* double rate slot select */
+#define AC97_GP_DRSS_1011	0x0000	/* LR(C) 10+11(+12) */
+#define AC97_GP_DRSS_78		0x0400	/* LR 7+8 */
+
+/* powerdown bits */
+#define AC97_PD_ADC_STATUS	0x0001	/* ADC status (RO) */
+#define AC97_PD_DAC_STATUS	0x0002	/* DAC status (RO) */
+#define AC97_PD_MIXER_STATUS	0x0004	/* Analog mixer status (RO) */
+#define AC97_PD_VREF_STATUS	0x0008	/* Vref status (RO) */
+#define AC97_PD_PR0		0x0100	/* Power down PCM ADCs and input MUX */
+#define AC97_PD_PR1		0x0200	/* Power down PCM front DAC */
+#define AC97_PD_PR2		0x0400	/* Power down Mixer (Vref still on) */
+#define AC97_PD_PR3		0x0800	/* Power down Mixer (Vref off) */
+#define AC97_PD_PR4		0x1000	/* Power down AC-Link */
+#define AC97_PD_PR5		0x2000	/* Disable internal clock usage */
+#define AC97_PD_PR6		0x4000	/* Headphone amplifier */
+#define AC97_PD_EAPD		0x8000	/* External Amplifer Power Down (EAPD) */
+
+/* extended audio ID bit defines */
+#define AC97_EI_VRA		0x0001	/* Variable bit rate supported */
+#define AC97_EI_DRA		0x0002	/* Double rate supported */
+#define AC97_EI_SPDIF		0x0004	/* S/PDIF out supported */
+#define AC97_EI_VRM		0x0008	/* Variable bit rate supported for MIC */
+#define AC97_EI_DACS_SLOT_MASK	0x0030	/* DACs slot assignment */
+#define AC97_EI_DACS_SLOT_SHIFT	4
+#define AC97_EI_CDAC		0x0040	/* PCM Center DAC available */
+#define AC97_EI_SDAC		0x0080	/* PCM Surround DACs available */
+#define AC97_EI_LDAC		0x0100	/* PCM LFE DAC available */
+#define AC97_EI_AMAP		0x0200	/* indicates optional slot/DAC mapping based on codec ID */
+#define AC97_EI_REV_MASK	0x0c00	/* AC'97 revision mask */
+#define AC97_EI_REV_22		0x0400	/* AC'97 revision 2.2 */
+#define AC97_EI_REV_23		0x0800	/* AC'97 revision 2.3 */
+#define AC97_EI_REV_SHIFT	10
+#define AC97_EI_ADDR_MASK	0xc000	/* physical codec ID (address) */
+#define AC97_EI_ADDR_SHIFT	14
+
+/* extended audio status and control bit defines */
+#define AC97_EA_VRA		0x0001	/* Variable bit rate enable bit */
+#define AC97_EA_DRA		0x0002	/* Double-rate audio enable bit */
+#define AC97_EA_SPDIF		0x0004	/* S/PDIF out enable bit */
+#define AC97_EA_VRM		0x0008	/* Variable bit rate for MIC enable bit */
+#define AC97_EA_SPSA_SLOT_MASK	0x0030	/* Mask for slot assignment bits */
+#define AC97_EA_SPSA_SLOT_SHIFT 4
+#define AC97_EA_SPSA_3_4	0x0000	/* Slot assigned to 3 & 4 */
+#define AC97_EA_SPSA_7_8	0x0010	/* Slot assigned to 7 & 8 */
+#define AC97_EA_SPSA_6_9	0x0020	/* Slot assigned to 6 & 9 */
+#define AC97_EA_SPSA_10_11	0x0030	/* Slot assigned to 10 & 11 */
+#define AC97_EA_CDAC		0x0040	/* PCM Center DAC is ready (Read only) */
+#define AC97_EA_SDAC		0x0080	/* PCM Surround DACs are ready (Read only) */
+#define AC97_EA_LDAC		0x0100	/* PCM LFE DAC is ready (Read only) */
+#define AC97_EA_MDAC		0x0200	/* MIC ADC is ready (Read only) */
+#define AC97_EA_SPCV		0x0400	/* S/PDIF configuration valid (Read only) */
+#define AC97_EA_PRI		0x0800	/* Turns the PCM Center DAC off */
+#define AC97_EA_PRJ		0x1000	/* Turns the PCM Surround DACs off */
+#define AC97_EA_PRK		0x2000	/* Turns the PCM LFE DAC off */
+#define AC97_EA_PRL		0x4000	/* Turns the MIC ADC off */
+
+/* S/PDIF control bit defines */
+#define AC97_SC_PRO		0x0001	/* Professional status */
+#define AC97_SC_NAUDIO		0x0002	/* Non audio stream */
+#define AC97_SC_COPY		0x0004	/* Copyright status */
+#define AC97_SC_PRE		0x0008	/* Preemphasis status */
+#define AC97_SC_CC_MASK		0x07f0	/* Category Code mask */
+#define AC97_SC_CC_SHIFT	4
+#define AC97_SC_L		0x0800	/* Generation Level status */
+#define AC97_SC_SPSR_MASK	0x3000	/* S/PDIF Sample Rate bits */
+#define AC97_SC_SPSR_SHIFT	12
+#define AC97_SC_SPSR_44K	0x0000	/* Use 44.1kHz Sample rate */
+#define AC97_SC_SPSR_48K	0x2000	/* Use 48kHz Sample rate */
+#define AC97_SC_SPSR_32K	0x3000	/* Use 32kHz Sample rate */
+#define AC97_SC_DRS		0x4000	/* Double Rate S/PDIF */
+#define AC97_SC_V		0x8000	/* Validity status */
+
+/* Interrupt and Paging bit defines (AC'97 2.3) */
+#define AC97_PAGE_MASK		0x000f	/* Page Selector */
+#define AC97_PAGE_VENDOR	0	/* Vendor-specific registers */
+#define AC97_PAGE_1		1	/* Extended Codec Registers page 1 */
+#define AC97_INT_ENABLE		0x0800	/* Interrupt Enable */
+#define AC97_INT_SENSE		0x1000	/* Sense Cycle */
+#define AC97_INT_CAUSE_SENSE	0x2000	/* Sense Cycle Completed (RO) */
+#define AC97_INT_CAUSE_GPIO	0x4000	/* GPIO bits changed (RO) */
+#define AC97_INT_STATUS		0x8000	/* Interrupt Status */
+
+/* extended modem ID bit defines */
+#define AC97_MEI_LINE1		0x0001	/* Line1 present */
+#define AC97_MEI_LINE2		0x0002	/* Line2 present */
+#define AC97_MEI_HANDSET	0x0004	/* Handset present */
+#define AC97_MEI_CID1		0x0008	/* caller ID decode for Line1 is supported */
+#define AC97_MEI_CID2		0x0010	/* caller ID decode for Line2 is supported */
+#define AC97_MEI_ADDR_MASK	0xc000	/* physical codec ID (address) */
+#define AC97_MEI_ADDR_SHIFT	14
+
+/* extended modem status and control bit defines */
+#define AC97_MEA_GPIO		0x0001	/* GPIO is ready (ro) */
+#define AC97_MEA_MREF		0x0002	/* Vref is up to nominal level (ro) */
+#define AC97_MEA_ADC1		0x0004	/* ADC1 operational (ro) */
+#define AC97_MEA_DAC1		0x0008	/* DAC1 operational (ro) */
+#define AC97_MEA_ADC2		0x0010	/* ADC2 operational (ro) */
+#define AC97_MEA_DAC2		0x0020	/* DAC2 operational (ro) */
+#define AC97_MEA_HADC		0x0040	/* HADC operational (ro) */
+#define AC97_MEA_HDAC		0x0080	/* HDAC operational (ro) */
+#define AC97_MEA_PRA		0x0100	/* GPIO power down (high) */
+#define AC97_MEA_PRB		0x0200	/* reserved */
+#define AC97_MEA_PRC		0x0400	/* ADC1 power down (high) */
+#define AC97_MEA_PRD		0x0800	/* DAC1 power down (high) */
+#define AC97_MEA_PRE		0x1000	/* ADC2 power down (high) */
+#define AC97_MEA_PRF		0x2000	/* DAC2 power down (high) */
+#define AC97_MEA_PRG		0x4000	/* HADC power down (high) */
+#define AC97_MEA_PRH		0x8000	/* HDAC power down (high) */
+
+/* modem gpio status defines */
+#define AC97_GPIO_LINE1_OH      0x0001  /* Off Hook Line1 */
+#define AC97_GPIO_LINE1_RI      0x0002  /* Ring Detect Line1 */
+#define AC97_GPIO_LINE1_CID     0x0004  /* Caller ID path enable Line1 */
+#define AC97_GPIO_LINE1_LCS     0x0008  /* Loop Current Sense Line1 */
+#define AC97_GPIO_LINE1_PULSE   0x0010  /* Opt./ Pulse Dial Line1 (out) */
+#define AC97_GPIO_LINE1_HL1R    0x0020  /* Opt./ Handset to Line1 relay control (out) */
+#define AC97_GPIO_LINE1_HOHD    0x0040  /* Opt./ Handset off hook detect Line1 (in) */
+#define AC97_GPIO_LINE12_AC     0x0080  /* Opt./ Int.bit 1 / Line1/2 AC (out) */
+#define AC97_GPIO_LINE12_DC     0x0100  /* Opt./ Int.bit 2 / Line1/2 DC (out) */
+#define AC97_GPIO_LINE12_RS     0x0200  /* Opt./ Int.bit 3 / Line1/2 RS (out) */
+#define AC97_GPIO_LINE2_OH      0x0400  /* Off Hook Line2 */
+#define AC97_GPIO_LINE2_RI      0x0800  /* Ring Detect Line2 */
+#define AC97_GPIO_LINE2_CID     0x1000  /* Caller ID path enable Line2 */
+#define AC97_GPIO_LINE2_LCS     0x2000  /* Loop Current Sense Line2 */
+#define AC97_GPIO_LINE2_PULSE   0x4000  /* Opt./ Pulse Dial Line2 (out) */
+#define AC97_GPIO_LINE2_HL1R    0x8000  /* Opt./ Handset to Line2 relay control (out) */
+
diff --git a/include/sound/ac97_codec.h b/include/sound/ac97_codec.h
new file mode 100644
index 0000000000..c495c6d5fb
--- /dev/null
+++ b/include/sound/ac97_codec.h
@@ -0,0 +1,421 @@
+/* SPDX-License-Identifier: GPL-2.0+
+ *
+ *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
+ *  Universal interface for Audio Codec '97
+ *
+ *  For more details look to AC '97 component specification revision 2.1
+ *  by Intel Corporation (http://developer.intel.com).
+ */
+
+#ifndef __SOUND_AC97_CODEC_H
+#define __SOUND_AC97_CODEC_H
+
+#include <linux/bitops.h>
+#include <linux/device.h>
+#include <linux/workqueue.h>
+#include <sound/ac97/regs.h>
+#include <sound/pcm.h>
+#include <sound/control.h>
+#include <sound/info.h>
+
+/* maximum number of devices on the AC97 bus */
+#define	AC97_BUS_MAX_DEVICES	4
+
+/* specific - SigmaTel */
+#define AC97_SIGMATEL_OUTSEL	0x64	/* Output Select, STAC9758 */
+#define AC97_SIGMATEL_INSEL	0x66	/* Input Select, STAC9758 */
+#define AC97_SIGMATEL_IOMISC	0x68	/* STAC9758 */
+#define AC97_SIGMATEL_ANALOG	0x6c	/* Analog Special */
+#define AC97_SIGMATEL_DAC2INVERT 0x6e
+#define AC97_SIGMATEL_BIAS1	0x70
+#define AC97_SIGMATEL_BIAS2	0x72
+#define AC97_SIGMATEL_VARIOUS	0x72	/* STAC9758 */
+#define AC97_SIGMATEL_MULTICHN	0x74	/* Multi-Channel programming */
+#define AC97_SIGMATEL_CIC1	0x76
+#define AC97_SIGMATEL_CIC2	0x78
+
+/* specific - Analog Devices */
+#define AC97_AD_TEST		0x5a	/* test register */
+#define AC97_AD_TEST2		0x5c	/* undocumented test register 2 */
+#define AC97_AD_HPFD_SHIFT	12	/* High Pass Filter Disable */
+#define AC97_AD_CODEC_CFG	0x70	/* codec configuration */
+#define AC97_AD_JACK_SPDIF	0x72	/* Jack Sense & S/PDIF */
+#define AC97_AD_SERIAL_CFG	0x74	/* Serial Configuration */
+#define AC97_AD_MISC		0x76	/* Misc Control Bits */
+#define AC97_AD_VREFD_SHIFT	2	/* V_REFOUT Disable (AD1888) */
+
+/* specific - Cirrus Logic */
+#define AC97_CSR_ACMODE		0x5e	/* AC Mode Register */
+#define AC97_CSR_MISC_CRYSTAL	0x60	/* Misc Crystal Control */
+#define AC97_CSR_SPDIF		0x68	/* S/PDIF Register */
+#define AC97_CSR_SERIAL		0x6a	/* Serial Port Control */
+#define AC97_CSR_SPECF_ADDR	0x6c	/* Special Feature Address */
+#define AC97_CSR_SPECF_DATA	0x6e	/* Special Feature Data */
+#define AC97_CSR_BDI_STATUS	0x7a	/* BDI Status */
+
+/* specific - Conexant */
+#define AC97_CXR_AUDIO_MISC	0x5c
+#define AC97_CXR_SPDIFEN	(1<<3)
+#define AC97_CXR_COPYRGT	(1<<2)
+#define AC97_CXR_SPDIF_MASK	(3<<0)
+#define AC97_CXR_SPDIF_PCM	0x0
+#define AC97_CXR_SPDIF_AC3	0x2
+
+/* specific - ALC */
+#define AC97_ALC650_SPDIF_INPUT_STATUS1	0x60
+/* S/PDIF input status 1 bit defines */
+#define AC97_ALC650_PRO             0x0001  /* Professional status */
+#define AC97_ALC650_NAUDIO          0x0002  /* Non audio stream */
+#define AC97_ALC650_COPY            0x0004  /* Copyright status */
+#define AC97_ALC650_PRE             0x0038  /* Preemphasis status */
+#define AC97_ALC650_PRE_SHIFT       3
+#define AC97_ALC650_MODE            0x00C0  /* Preemphasis status */
+#define AC97_ALC650_MODE_SHIFT      6
+#define AC97_ALC650_CC_MASK         0x7f00  /* Category Code mask */
+#define AC97_ALC650_CC_SHIFT        8
+#define AC97_ALC650_L               0x8000  /* Generation Level status */
+
+#define AC97_ALC650_SPDIF_INPUT_STATUS2	0x62
+/* S/PDIF input status 2 bit defines */
+#define AC97_ALC650_SOUCE_MASK      0x000f  /* Source number */
+#define AC97_ALC650_CHANNEL_MASK    0x00f0  /* Channel number */
+#define AC97_ALC650_CHANNEL_SHIFT   4 
+#define AC97_ALC650_SPSR_MASK       0x0f00  /* S/PDIF Sample Rate bits */
+#define AC97_ALC650_SPSR_SHIFT      8
+#define AC97_ALC650_SPSR_44K        0x0000  /* Use 44.1kHz Sample rate */
+#define AC97_ALC650_SPSR_48K        0x0200  /* Use 48kHz Sample rate */
+#define AC97_ALC650_SPSR_32K        0x0300  /* Use 32kHz Sample rate */
+#define AC97_ALC650_CLOCK_ACCURACY  0x3000  /* Clock accuracy */
+#define AC97_ALC650_CLOCK_SHIFT     12
+#define AC97_ALC650_CLOCK_LOCK      0x4000  /* Clock locked status */
+#define AC97_ALC650_V               0x8000  /* Validity status */
+
+#define AC97_ALC650_SURR_DAC_VOL	0x64
+#define AC97_ALC650_LFE_DAC_VOL		0x66
+#define AC97_ALC650_UNKNOWN1		0x68
+#define AC97_ALC650_MULTICH		0x6a
+#define AC97_ALC650_UNKNOWN2		0x6c
+#define AC97_ALC650_REVISION		0x6e
+#define AC97_ALC650_UNKNOWN3		0x70
+#define AC97_ALC650_UNKNOWN4		0x72
+#define AC97_ALC650_MISC		0x74
+#define AC97_ALC650_GPIO_SETUP		0x76
+#define AC97_ALC650_GPIO_STATUS		0x78
+#define AC97_ALC650_CLOCK		0x7a
+
+/* specific - Yamaha YMF7x3 */
+#define AC97_YMF7X3_DIT_CTRL	0x66	/* DIT Control (YMF743) / 2 (YMF753) */
+#define AC97_YMF7X3_3D_MODE_SEL	0x68	/* 3D Mode Select */
+
+/* specific - C-Media */
+#define AC97_CM9738_VENDOR_CTRL	0x5a
+#define AC97_CM9739_MULTI_CHAN	0x64
+#define AC97_CM9739_SPDIF_IN_STATUS	0x68 /* 32bit */
+#define AC97_CM9739_SPDIF_CTRL	0x6c
+
+/* specific - wolfson */
+#define AC97_WM97XX_FMIXER_VOL  0x72
+#define AC97_WM9704_RMIXER_VOL  0x74
+#define AC97_WM9704_TEST        0x5a
+#define AC97_WM9704_RPCM_VOL    0x70
+#define AC97_WM9711_OUT3VOL     0x16
+
+
+/* ac97->scaps */
+#define AC97_SCAP_AUDIO		(1<<0)	/* audio codec 97 */
+#define AC97_SCAP_MODEM		(1<<1)	/* modem codec 97 */
+#define AC97_SCAP_SURROUND_DAC	(1<<2)	/* surround L&R DACs are present */
+#define AC97_SCAP_CENTER_LFE_DAC (1<<3)	/* center and LFE DACs are present */
+#define AC97_SCAP_SKIP_AUDIO	(1<<4)	/* skip audio part of codec */
+#define AC97_SCAP_SKIP_MODEM	(1<<5)	/* skip modem part of codec */
+#define AC97_SCAP_INDEP_SDIN	(1<<6)	/* independent SDIN */
+#define AC97_SCAP_INV_EAPD	(1<<7)	/* inverted EAPD */
+#define AC97_SCAP_DETECT_BY_VENDOR (1<<8) /* use vendor registers for read tests */
+#define AC97_SCAP_NO_SPDIF	(1<<9)	/* don't build SPDIF controls */
+#define AC97_SCAP_EAPD_LED	(1<<10)	/* EAPD as mute LED */
+#define AC97_SCAP_POWER_SAVE	(1<<11)	/* capable for aggressive power-saving */
+
+/* ac97->flags */
+#define AC97_HAS_PC_BEEP	(1<<0)	/* force PC Speaker usage */
+#define AC97_AD_MULTI		(1<<1)	/* Analog Devices - multi codecs */
+#define AC97_CS_SPDIF		(1<<2)	/* Cirrus Logic uses funky SPDIF */
+#define AC97_CX_SPDIF		(1<<3)	/* Conexant's spdif interface */
+#define AC97_STEREO_MUTES	(1<<4)	/* has stereo mute bits */
+#define AC97_DOUBLE_RATE	(1<<5)	/* supports double rate playback */
+#define AC97_HAS_NO_MASTER_VOL	(1<<6)	/* no Master volume */
+#define AC97_HAS_NO_PCM_VOL	(1<<7)	/* no PCM volume */
+#define AC97_DEFAULT_POWER_OFF	(1<<8)	/* no RESET write */
+#define AC97_MODEM_PATCH	(1<<9)	/* modem patch */
+#define AC97_HAS_NO_REC_GAIN	(1<<10) /* no Record gain */
+#define AC97_HAS_NO_PHONE	(1<<11) /* no PHONE volume */
+#define AC97_HAS_NO_PC_BEEP	(1<<12) /* no PC Beep volume */
+#define AC97_HAS_NO_VIDEO	(1<<13) /* no Video volume */
+#define AC97_HAS_NO_CD		(1<<14) /* no CD volume */
+#define AC97_HAS_NO_MIC	(1<<15) /* no MIC volume */
+#define AC97_HAS_NO_TONE	(1<<16) /* no Tone volume */
+#define AC97_HAS_NO_STD_PCM	(1<<17)	/* no standard AC97 PCM volume and mute */
+#define AC97_HAS_NO_AUX		(1<<18) /* no standard AC97 AUX volume and mute */
+#define AC97_HAS_8CH		(1<<19) /* supports 8-channel output */
+
+/* rates indexes */
+#define AC97_RATES_FRONT_DAC	0
+#define AC97_RATES_SURR_DAC	1
+#define AC97_RATES_LFE_DAC	2
+#define AC97_RATES_ADC		3
+#define AC97_RATES_MIC_ADC	4
+#define AC97_RATES_SPDIF	5
+
+#define AC97_NUM_GPIOS		16
+/*
+ *
+ */
+
+struct snd_ac97;
+struct snd_ac97_gpio_priv;
+struct snd_pcm_chmap;
+
+struct snd_ac97_build_ops {
+	int (*build_3d) (struct snd_ac97 *ac97);
+	int (*build_specific) (struct snd_ac97 *ac97);
+	int (*build_spdif) (struct snd_ac97 *ac97);
+	int (*build_post_spdif) (struct snd_ac97 *ac97);
+#ifdef CONFIG_PM
+	void (*suspend) (struct snd_ac97 *ac97);
+	void (*resume) (struct snd_ac97 *ac97);
+#endif
+	void (*update_jacks) (struct snd_ac97 *ac97);	/* for jack-sharing */
+};
+
+struct snd_ac97_bus_ops {
+	void (*reset) (struct snd_ac97 *ac97);
+	void (*warm_reset)(struct snd_ac97 *ac97);
+	void (*write) (struct snd_ac97 *ac97, unsigned short reg, unsigned short val);
+	unsigned short (*read) (struct snd_ac97 *ac97, unsigned short reg);
+	void (*wait) (struct snd_ac97 *ac97);
+	void (*init) (struct snd_ac97 *ac97);
+};
+
+struct snd_ac97_bus {
+	/* -- lowlevel (hardware) driver specific -- */
+	const struct snd_ac97_bus_ops *ops;
+	void *private_data;
+	void (*private_free) (struct snd_ac97_bus *bus);
+	/* --- */
+	struct snd_card *card;
+	unsigned short num;	/* bus number */
+	unsigned short no_vra: 1, /* bridge doesn't support VRA */
+		       dra: 1,	/* bridge supports double rate */
+		       isdin: 1;/* independent SDIN */
+	unsigned int clock;	/* AC'97 base clock (usually 48000Hz) */
+	spinlock_t bus_lock;	/* used mainly for slot allocation */
+	unsigned short used_slots[2][4]; /* actually used PCM slots */
+	unsigned short pcms_count; /* count of PCMs */
+	struct ac97_pcm *pcms;
+	struct snd_ac97 *codec[4];
+	struct snd_info_entry *proc;
+};
+
+/* static resolution table */
+struct snd_ac97_res_table {
+	unsigned short reg;	/* register */
+	unsigned short bits;	/* resolution bitmask */
+};
+
+struct snd_ac97_template {
+	void *private_data;
+	void (*private_free) (struct snd_ac97 *ac97);
+	struct pci_dev *pci;	/* assigned PCI device - used for quirks */
+	unsigned short num;	/* number of codec: 0 = primary, 1 = secondary */
+	unsigned short addr;	/* physical address of codec [0-3] */
+	unsigned int scaps;	/* driver capabilities */
+	const struct snd_ac97_res_table *res_table;	/* static resolution */
+};
+
+struct snd_ac97 {
+	/* -- lowlevel (hardware) driver specific -- */
+	const struct snd_ac97_build_ops *build_ops;
+	void *private_data;
+	void (*private_free) (struct snd_ac97 *ac97);
+	/* --- */
+	struct snd_ac97_bus *bus;
+	struct pci_dev *pci;	/* assigned PCI device - used for quirks */
+	struct snd_info_entry *proc;
+	struct snd_info_entry *proc_regs;
+	unsigned short subsystem_vendor;
+	unsigned short subsystem_device;
+	struct mutex reg_mutex;
+	struct mutex page_mutex;	/* mutex for AD18xx multi-codecs and paging (2.3) */
+	unsigned short num;	/* number of codec: 0 = primary, 1 = secondary */
+	unsigned short addr;	/* physical address of codec [0-3] */
+	unsigned int id;	/* identification of codec */
+	unsigned short caps;	/* capabilities (register 0) */
+	unsigned short ext_id;	/* extended feature identification (register 28) */
+	unsigned short ext_mid;	/* extended modem ID (register 3C) */
+	const struct snd_ac97_res_table *res_table;	/* static resolution */
+	unsigned int scaps;	/* driver capabilities */
+	unsigned int flags;	/* specific code */
+	unsigned int rates[6];	/* see AC97_RATES_* defines */
+	unsigned int spdif_status;
+	unsigned short regs[0x80]; /* register cache */
+	DECLARE_BITMAP(reg_accessed, 0x80); /* bit flags */
+	union {			/* vendor specific code */
+		struct {
+			unsigned short unchained[3];	// 0 = C34, 1 = C79, 2 = C69
+			unsigned short chained[3];	// 0 = C34, 1 = C79, 2 = C69
+			unsigned short id[3];		// codec IDs (lower 16-bit word)
+			unsigned short pcmreg[3];	// PCM registers
+			unsigned short codec_cfg[3];	// CODEC_CFG bits
+			unsigned char swap_mic_linein;	// AD1986/AD1986A only
+			unsigned char lo_as_master;	/* LO as master */
+		} ad18xx;
+		unsigned int dev_flags;		/* device specific */
+	} spec;
+	/* jack-sharing info */
+	unsigned char indep_surround;
+	unsigned char channel_mode;
+
+#ifdef CONFIG_SND_AC97_POWER_SAVE
+	unsigned int power_up;	/* power states */
+	struct delayed_work power_work;
+#endif
+	struct device dev;
+	struct snd_ac97_gpio_priv *gpio_priv;
+
+	struct snd_pcm_chmap *chmaps[2]; /* channel-maps (optional) */
+};
+
+#define to_ac97_t(d) container_of(d, struct snd_ac97, dev)
+
+/* conditions */
+static inline int ac97_is_audio(struct snd_ac97 * ac97)
+{
+	return (ac97->scaps & AC97_SCAP_AUDIO);
+}
+static inline int ac97_is_modem(struct snd_ac97 * ac97)
+{
+	return (ac97->scaps & AC97_SCAP_MODEM);
+}
+static inline int ac97_is_rev22(struct snd_ac97 * ac97)
+{
+	return (ac97->ext_id & AC97_EI_REV_MASK) >= AC97_EI_REV_22;
+}
+static inline int ac97_can_amap(struct snd_ac97 * ac97)
+{
+	return (ac97->ext_id & AC97_EI_AMAP) != 0;
+}
+static inline int ac97_can_spdif(struct snd_ac97 * ac97)
+{
+	return (ac97->ext_id & AC97_EI_SPDIF) != 0;
+}
+
+/* functions */
+/* create new AC97 bus */
+int snd_ac97_bus(struct snd_card *card, int num,
+		 const struct snd_ac97_bus_ops *ops,
+		 void *private_data, struct snd_ac97_bus **rbus);
+/* create mixer controls */
+int snd_ac97_mixer(struct snd_ac97_bus *bus, struct snd_ac97_template *template,
+		   struct snd_ac97 **rac97);
+const char *snd_ac97_get_short_name(struct snd_ac97 *ac97);
+
+void snd_ac97_write(struct snd_ac97 *ac97, unsigned short reg, unsigned short value);
+unsigned short snd_ac97_read(struct snd_ac97 *ac97, unsigned short reg);
+void snd_ac97_write_cache(struct snd_ac97 *ac97, unsigned short reg, unsigned short value);
+int snd_ac97_update(struct snd_ac97 *ac97, unsigned short reg, unsigned short value);
+int snd_ac97_update_bits(struct snd_ac97 *ac97, unsigned short reg, unsigned short mask, unsigned short value);
+#ifdef CONFIG_SND_AC97_POWER_SAVE
+int snd_ac97_update_power(struct snd_ac97 *ac97, int reg, int powerup);
+#else
+static inline int snd_ac97_update_power(struct snd_ac97 *ac97, int reg,
+					int powerup)
+{
+	return 0;
+}
+#endif
+#ifdef CONFIG_PM
+void snd_ac97_suspend(struct snd_ac97 *ac97);
+void snd_ac97_resume(struct snd_ac97 *ac97);
+#else
+static inline void snd_ac97_suspend(struct snd_ac97 *ac97) {}
+static inline void snd_ac97_resume(struct snd_ac97 *ac97) {}
+#endif
+int snd_ac97_reset(struct snd_ac97 *ac97, bool try_warm, unsigned int id,
+	unsigned int id_mask);
+
+/* quirk types */
+enum {
+	AC97_TUNE_DEFAULT = -1,	/* use default from quirk list (not valid in list) */
+	AC97_TUNE_NONE = 0,	/* nothing extra to do */
+	AC97_TUNE_HP_ONLY,	/* headphone (true line-out) control as master only */
+	AC97_TUNE_SWAP_HP,	/* swap headphone and master controls */
+	AC97_TUNE_SWAP_SURROUND, /* swap master and surround controls */
+	AC97_TUNE_AD_SHARING,	/* for AD1985, turn on OMS bit and use headphone */
+	AC97_TUNE_ALC_JACK,	/* for Realtek, enable JACK detection */
+	AC97_TUNE_INV_EAPD,	/* inverted EAPD implementation */
+	AC97_TUNE_MUTE_LED,	/* EAPD bit works as mute LED */
+	AC97_TUNE_HP_MUTE_LED,  /* EAPD bit works as mute LED, use headphone control as master */
+};
+
+struct ac97_quirk {
+	unsigned short subvendor; /* PCI subsystem vendor id */
+	unsigned short subdevice; /* PCI subsystem device id */
+	unsigned short mask;	/* device id bit mask, 0 = accept all */
+	unsigned int codec_id;	/* codec id (if any), 0 = accept all */
+	const char *name;	/* name shown as info */
+	int type;		/* quirk type above */
+};
+
+int snd_ac97_tune_hardware(struct snd_ac97 *ac97,
+			   const struct ac97_quirk *quirk,
+			   const char *override);
+int snd_ac97_set_rate(struct snd_ac97 *ac97, int reg, unsigned int rate);
+
+/*
+ * PCM allocation
+ */
+
+enum ac97_pcm_cfg {
+	AC97_PCM_CFG_FRONT = 2,
+	AC97_PCM_CFG_REAR = 10,		/* alias surround */
+	AC97_PCM_CFG_LFE = 11,		/* center + lfe */
+	AC97_PCM_CFG_40 = 4,		/* front + rear */
+	AC97_PCM_CFG_51 = 6,		/* front + rear + center/lfe */
+	AC97_PCM_CFG_SPDIF = 20
+};
+
+struct ac97_pcm {
+	struct snd_ac97_bus *bus;
+	unsigned int stream: 1,	   	   /* stream type: 1 = capture */
+		     exclusive: 1,	   /* exclusive mode, don't override with other pcms */
+		     copy_flag: 1,	   /* lowlevel driver must fill all entries */
+		     spdif: 1;		   /* spdif pcm */
+	unsigned short aslots;		   /* active slots */
+	unsigned short cur_dbl;		   /* current double-rate state */
+	unsigned int rates;		   /* available rates */
+	struct {
+		unsigned short slots;	   /* driver input: requested AC97 slot numbers */
+		unsigned short rslots[4];  /* allocated slots per codecs */
+		unsigned char rate_table[4];
+		struct snd_ac97 *codec[4];	   /* allocated codecs */
+	} r[2];				   /* 0 = standard rates, 1 = double rates */
+	unsigned long private_value;	   /* used by the hardware driver */
+};
+
+int snd_ac97_pcm_assign(struct snd_ac97_bus *ac97,
+			unsigned short pcms_count,
+			const struct ac97_pcm *pcms);
+int snd_ac97_pcm_open(struct ac97_pcm *pcm, unsigned int rate,
+		      enum ac97_pcm_cfg cfg, unsigned short slots);
+int snd_ac97_pcm_close(struct ac97_pcm *pcm);
+int snd_ac97_pcm_double_rate_rules(struct snd_pcm_runtime *runtime);
+
+/* ad hoc AC97 device driver access */
+extern struct bus_type ac97_bus_type;
+
+/* AC97 platform_data adding function */
+static inline void snd_ac97_dev_add_pdata(struct snd_ac97 *ac97, void *data)
+{
+	ac97->dev.platform_data = data;
+}
+
+#endif /* __SOUND_AC97_CODEC_H */