path: root/include/sound/hdaudio.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * HD-audio core stuff
 */

#ifndef __SOUND_HDAUDIO_H
#define __SOUND_HDAUDIO_H

#include <linux/device.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/pm_runtime.h>
#include <linux/timecounter.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/memalloc.h>
#include <sound/hda_verbs.h>
#include <drm/i915_component.h>

/* codec node id */
typedef u16 hda_nid_t;

struct hdac_bus;
struct hdac_stream;
struct hdac_device;
struct hdac_driver;
struct hdac_widget_tree;
struct hda_device_id;

/*
 * exported bus type
 */
extern struct bus_type snd_hda_bus_type;

/*
 * generic arrays
 */
struct snd_array {
	unsigned int used;
	unsigned int alloced;
	unsigned int elem_size;
	unsigned int alloc_align;
	void *list;
};

/*
 * HD-audio codec base device
 */
struct hdac_device {
	struct device dev;
	int type;
	struct hdac_bus *bus;
	unsigned int addr;		/* codec address */
	struct list_head list;		/* list point for bus codec_list */

	hda_nid_t afg;			/* AFG node id */
	hda_nid_t mfg;			/* MFG node id */

	/* ids */
	unsigned int vendor_id;
	unsigned int subsystem_id;
	unsigned int revision_id;
	unsigned int afg_function_id;
	unsigned int mfg_function_id;
	unsigned int afg_unsol:1;
	unsigned int mfg_unsol:1;

	unsigned int power_caps;	/* FG power caps */

	const char *vendor_name;	/* codec vendor name */
	const char *chip_name;		/* codec chip name */

	/* verb exec op override */
	int (*exec_verb)(struct hdac_device *dev, unsigned int cmd,
			 unsigned int flags, unsigned int *res);

	/* widgets */
	unsigned int num_nodes;
	hda_nid_t start_nid, end_nid;

	/* misc flags */
	atomic_t in_pm;		/* suspend/resume being performed */

	/* sysfs */
	struct mutex widget_lock;
	struct hdac_widget_tree *widgets;

	/* regmap */
	struct regmap *regmap;
	struct mutex regmap_lock;
	struct snd_array vendor_verbs;
	bool lazy_cache:1;	/* don't wake up for writes */
	bool caps_overwriting:1; /* caps overwrite being in process */
	bool cache_coef:1;	/* cache COEF read/write too */
};

/* device/driver type used for matching */
enum {
	HDA_DEV_CORE,
	HDA_DEV_LEGACY,
	HDA_DEV_ASOC,
};

enum {
	SND_SKL_PCI_BIND_AUTO,	/* automatic selection based on pci class */
	SND_SKL_PCI_BIND_LEGACY,/* bind only with legacy driver */
	SND_SKL_PCI_BIND_ASOC	/* bind only with ASoC driver */
};

/* direction */
enum {
	HDA_INPUT, HDA_OUTPUT
};

#define dev_to_hdac_dev(_dev)	container_of(_dev, struct hdac_device, dev)

int snd_hdac_device_init(struct hdac_device *dev, struct hdac_bus *bus,
			 const char *name, unsigned int addr);
void snd_hdac_device_exit(struct hdac_device *dev);
int snd_hdac_device_register(struct hdac_device *codec);
void snd_hdac_device_unregister(struct hdac_device *codec);
int snd_hdac_device_set_chip_name(struct hdac_device *codec, const char *name);
int snd_hdac_codec_modalias(struct hdac_device *hdac, char *buf, size_t size);

int snd_hdac_refresh_widgets(struct hdac_device *codec);

int snd_hdac_read(struct hdac_device *codec, hda_nid_t nid,
		  unsigned int verb, unsigned int parm, unsigned int *res);
int _snd_hdac_read_parm(struct hdac_device *codec, hda_nid_t nid, int parm,
			unsigned int *res);
int snd_hdac_read_parm_uncached(struct hdac_device *codec, hda_nid_t nid,
				int parm);
int snd_hdac_override_parm(struct hdac_device *codec, hda_nid_t nid,
			   unsigned int parm, unsigned int val);
int snd_hdac_get_connections(struct hdac_device *codec, hda_nid_t nid,
			     hda_nid_t *conn_list, int max_conns);
int snd_hdac_get_sub_nodes(struct hdac_device *codec, hda_nid_t nid,
			   hda_nid_t *start_id);
unsigned int snd_hdac_calc_stream_format(unsigned int rate,
					 unsigned int channels,
					 snd_pcm_format_t format,
					 unsigned int maxbps,
					 unsigned short spdif_ctls);
int snd_hdac_query_supported_pcm(struct hdac_device *codec, hda_nid_t nid,
				u32 *ratesp, u64 *formatsp, unsigned int *bpsp);
bool snd_hdac_is_supported_format(struct hdac_device *codec, hda_nid_t nid,
				  unsigned int format);

int snd_hdac_codec_read(struct hdac_device *hdac, hda_nid_t nid,
			int flags, unsigned int verb, unsigned int parm);
int snd_hdac_codec_write(struct hdac_device *hdac, hda_nid_t nid,
			int flags, unsigned int verb, unsigned int parm);
bool snd_hdac_check_power_state(struct hdac_device *hdac,
		hda_nid_t nid, unsigned int target_state);
unsigned int snd_hdac_sync_power_state(struct hdac_device *hdac,
		      hda_nid_t nid, unsigned int target_state);
/**
 * snd_hdac_read_parm - read a codec parameter
 * @codec: the codec object
 * @nid: NID to read a parameter
 * @parm: parameter to read
 *
 * Returns -1 for error.  If you need to distinguish the error more
 * strictly, use _snd_hdac_read_parm() directly.
 */
static inline int snd_hdac_read_parm(struct hdac_device *codec, hda_nid_t nid,
				     int parm)
{
	unsigned int val;

	return _snd_hdac_read_parm(codec, nid, parm, &val) < 0 ? -1 : val;
}

#ifdef CONFIG_PM
int snd_hdac_power_up(struct hdac_device *codec);
int snd_hdac_power_down(struct hdac_device *codec);
int snd_hdac_power_up_pm(struct hdac_device *codec);
int snd_hdac_power_down_pm(struct hdac_device *codec);
int snd_hdac_keep_power_up(struct hdac_device *codec);

/* call this at entering into suspend/resume callbacks in codec driver */
static inline void snd_hdac_enter_pm(struct hdac_device *codec)
{
	atomic_inc(&codec->in_pm);
}

/* call this at leaving from suspend/resume callbacks in codec driver */
static inline void snd_hdac_leave_pm(struct hdac_device *codec)
{
	atomic_dec(&codec->in_pm);
}

static inline bool snd_hdac_is_in_pm(struct hdac_device *codec)
{
	return atomic_read(&codec->in_pm);
}

static inline bool snd_hdac_is_power_on(struct hdac_device *codec)
{
	return !pm_runtime_suspended(&codec->dev);
}
#else
static inline int snd_hdac_power_up(struct hdac_device *codec) { return 0; }
static inline int snd_hdac_power_down(struct hdac_device *codec)