Release 4.7 include/sound/hdaudio.h

/*
 * HD-audio core stuff
 */

#ifndef __SOUND_HDAUDIO_H

#define __SOUND_HDAUDIO_H

#include <linux/device.h>
#include <linux/interrupt.h>
#include <linux/timecounter.h>
#include <sound/core.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 */
	
bool  link_power_control:1;

	/* sysfs */
	
struct hdac_widget_tree *widgets;

	/* regmap */
	
struct regmap *regmap;
	
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,
};

/* 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_refresh_widget_sysfs(struct hdac_device *codec);

unsigned int snd_hdac_make_cmd(struct hdac_device *codec, hda_nid_t nid,
			       unsigned int verb, unsigned int parm);
int snd_hdac_exec_verb(struct hdac_device *codec, unsigned int cmd,
		       unsigned int flags, unsigned int *res);
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,
					 unsigned int 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);
/**
 * 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;
}

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#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);
#else


static inline int snd_hdac_power_up(struct hdac_device *codec) { return 0; }
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static inline int snd_hdac_power_down(struct hdac_device *codec) { return 0; }
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static inline int snd_hdac_power_up_pm(struct hdac_device *codec) { return 0; }
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static inline int snd_hdac_power_down_pm(struct hdac_device *codec) { return 0; }
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static inline int snd_hdac_keep_power_up(struct hdac_device *codec) { return 0; }
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#endif

/*
 * HD-audio codec base driver
 */

struct hdac_driver {
	
struct device_driver driver;
	
int type;
	
const struct hda_device_id *id_table;
	
int (*match)(struct hdac_device *dev, struct hdac_driver *drv);
	
void (*unsol_event)(struct hdac_device *dev, unsigned int event);
};


#define drv_to_hdac_driver(_drv) container_of(_drv, struct hdac_driver, driver)

const struct hda_device_id *
hdac_get_device_id(struct hdac_device *hdev, struct hdac_driver *drv);

/*
 * Bus verb operators
 */

struct hdac_bus_ops {
	/* send a single command */
	
int (*command)(struct hdac_bus *bus, unsigned int cmd);
	/* get a response from the last command */
	
int (*get_response)(struct hdac_bus *bus, unsigned int addr,
			    unsigned int *res);
	/* control the link power  */
	
int (*link_power)(struct hdac_bus *bus, bool enable);
};

/*
 * Lowlevel I/O operators
 */

struct hdac_io_ops {
	/* mapped register accesses */
	
void (*reg_writel)(u32 value, u32 __iomem *addr);
	
u32 (*reg_readl)(u32 __iomem *addr);
	
void (*reg_writew)(u16 value, u16 __iomem *addr);
	
u16 (*reg_readw)(u16 __iomem *addr);
	
void (*reg_writeb)(u8 value, u8 __iomem *addr);
	
u8 (*reg_readb)(u8 __iomem *addr);
	/* Allocation ops */
	
int (*dma_alloc_pages)(struct hdac_bus *bus, int type, size_t size,
			       struct snd_dma_buffer *buf);
	
void (*dma_free_pages)(struct hdac_bus *bus,
			       struct snd_dma_buffer *buf);
};


#define HDA_UNSOL_QUEUE_SIZE	64

#define HDA_MAX_CODECS		8	
/* limit by controller side */

/* HD Audio class code */

#define PCI_CLASS_MULTIMEDIA_HD_AUDIO	0x0403

/*
 * CORB/RIRB
 *
 * Each CORB entry is 4byte, RIRB is 8byte
 */

struct hdac_rb {
	
__le32 *buf;		/* virtual address of CORB/RIRB buffer */
	
dma_addr_t addr;	/* physical address of CORB/RIRB buffer */
	

unsigned short rp, wp;	/* RIRB read/write pointers */
	
int cmds[HDA_MAX_CODECS];	/* number of pending requests */
	
u32 res[HDA_MAX_CODECS];	/* last read value */
};

/*
 * HD-audio bus base driver
 */

struct hdac_bus {
	
struct device *dev;
	
const struct hdac_bus_ops *ops;
	
const struct hdac_io_ops *io_ops;

	/* h/w resources */
	
unsigned long addr;
	
void __iomem *remap_addr;
	
int irq;

	/* codec linked list */
	
struct list_head codec_list;
	
unsigned int num_codecs;

	/* link caddr -> codec */
	
struct hdac_device *caddr_tbl[HDA_MAX_CODEC_ADDRESS + 1];

	/* unsolicited event queue */
	
u32 unsol_queue[HDA_UNSOL_QUEUE_SIZE * 2]; /* ring buffer */
	

unsigned int unsol_rp, unsol_wp;
	
struct work_struct unsol_work;

	/* bit flags of detected codecs */
	
unsigned long codec_mask;

	/* bit flags of powered codecs */
	
unsigned long codec_powered;

	/* CORB/RIRB */
	
struct hdac_rb corb;
	
struct hdac_rb rirb;
	
unsigned int last_cmd[HDA_MAX_CODECS];	/* last sent command */

	/* CORB/RIRB and position buffers */
	
struct snd_dma_buffer rb;
	
struct snd_dma_buffer posbuf;

	/* hdac_stream linked list */
	
struct list_head stream_list;

	/* operation state */
	
bool chip_init:1;		/* h/w initialized */

	/* behavior flags */
	
bool sync_write:1;		/* sync after verb write */
	
bool use_posbuf:1;		/* use position buffer */
	
bool snoop:1;			/* enable snooping */
	
bool align_bdle_4k:1;		/* BDLE align 4K boundary */
	
bool reverse_assign:1;		/* assign devices in reverse order */
	
bool corbrp_self_clear:1;	/* CORBRP clears itself after reset */

	
int bdl_pos_adj;		/* BDL position adjustment */

	/* locks */
	
spinlock_t reg_lock;
	
struct mutex cmd_mutex;

	/* i915 component interface */
	
struct i915_audio_component *audio_component;
	
int i915_power_refcount;
};

int snd_hdac_bus_init(struct hdac_bus *bus, struct device *dev,
		      const struct hdac_bus_ops *ops,
		      const struct hdac_io_ops *io_ops);
void snd_hdac_bus_exit(struct hdac_bus *bus);
int snd_hdac_bus_exec_verb(struct hdac_bus *bus, unsigned int addr,
			   unsigned int cmd, unsigned int *res);
int snd_hdac_bus_exec_verb_unlocked(struct hdac_bus *bus, unsigned int addr,
				    unsigned int cmd, unsigned int *res);
void snd_hdac_bus_queue_event(struct hdac_bus *bus, u32 res, u32 res_ex);

int snd_hdac_bus_add_device(struct hdac_bus *bus, struct hdac_device *codec);
void snd_hdac_bus_remove_device(struct hdac_bus *bus,
				struct hdac_device *codec);



static inline void snd_hdac_codec_link_up(struct hdac_device *codec)
{
	set_bit(codec->addr, &codec->bus->codec_powered);
}

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static inline void snd_hdac_codec_link_down(struct hdac_device *codec)
{
	clear_bit(codec->addr, &codec->bus->codec_powered);
}

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int snd_hdac_bus_send_cmd(struct hdac_bus *bus, unsigned int val);
int snd_hdac_bus_get_response(struct hdac_bus *bus, unsigned int addr,
			      unsigned int *res);
int snd_hdac_link_power(struct hdac_device *codec, bool enable);

bool snd_hdac_bus_init_chip(struct hdac_bus *bus, bool full_reset);
void snd_hdac_bus_stop_chip(struct hdac_bus *bus);
void snd_hdac_bus_init_cmd_io(struct hdac_bus *bus);
void snd_hdac_bus_stop_cmd_io(struct hdac_bus *bus);
void snd_hdac_bus_enter_link_reset(struct hdac_bus *bus);
void snd_hdac_bus_exit_link_reset(struct hdac_bus *bus);

void snd_hdac_bus_update_rirb(struct hdac_bus *bus);
int snd_hdac_bus_handle_stream_irq(struct hdac_bus *bus, unsigned int status,
				    void (*ack)(struct hdac_bus *,
						struct hdac_stream *));

int snd_hdac_bus_alloc_stream_pages(struct hdac_bus *bus);
void snd_hdac_bus_free_stream_pages(struct hdac_bus *bus);

/*
 * macros for easy use
 */

#define _snd_hdac_chip_write(type, chip, reg, value) \
	((chip)->io_ops->reg_write ## type(value, (chip)->remap_addr + (reg)))

#define _snd_hdac_chip_read(type, chip, reg) \
	((chip)->io_ops->reg_read ## type((chip)->remap_addr + (reg)))

/* read/write a register, pass without AZX_REG_ prefix */

#define snd_hdac_chip_writel(chip, reg, value) \
	_snd_hdac_chip_write(l, chip, AZX_REG_ ## reg, value)

#define snd_hdac_chip_writew(chip, reg, value) \
	_snd_hdac_chip_write(w, chip, AZX_REG_ ## reg, value)

#define snd_hdac_chip_writeb(chip, reg, value) \
	_snd_hdac_chip_write(b, chip, AZX_REG_ ## reg, value)

#define snd_hdac_chip_readl(chip, reg) \
	_snd_hdac_chip_read(l, chip, AZX_REG_ ## reg)

#define snd_hdac_chip_readw(chip, reg) \
	_snd_hdac_chip_read(w, chip, AZX_REG_ ## reg)

#define snd_hdac_chip_readb(chip, reg) \
	_snd_hdac_chip_read(b, chip, AZX_REG_ ## reg)

/* update a register, pass without AZX_REG_ prefix */

#define snd_hdac_chip_updatel(chip, reg, mask, val) \
	snd_hdac_chip_writel(chip, reg, \
                             (snd_hdac_chip_readl(chip, reg) & ~(mask)) | (val))

#define snd_hdac_chip_updatew(chip, reg, mask, val) \
	snd_hdac_chip_writew(chip, reg, \
                             (snd_hdac_chip_readw(chip, reg) & ~(mask)) | (val))

#define snd_hdac_chip_updateb(chip, reg, mask, val) \
	snd_hdac_chip_writeb(chip, reg, \
                             (snd_hdac_chip_readb(chip, reg) & ~(mask)) | (val))

/*
 * HD-audio stream
 */

struct hdac_stream {
	
struct hdac_bus *bus;
	
struct snd_dma_buffer bdl; /* BDL buffer */
	
__le32 *posbuf;		/* position buffer pointer */
	
int direction;		/* playback / capture (SNDRV_PCM_STREAM_*) */

	
unsigned int bufsize;	/* size of the play buffer in bytes */
	
unsigned int period_bytes; /* size of the period in bytes */
	
unsigned int frags;	/* number for period in the play buffer */
	
unsigned int fifo_size;	/* FIFO size */

	
void __iomem *sd_addr;	/* stream descriptor pointer */

	
u32 sd_int_sta_mask;	/* stream int status mask */

	/* pcm support */
	
struct snd_pcm_substream *substream;	/* assigned substream,
                                                 * set in PCM open
                                                 */
	
unsigned int format_val;	/* format value to be set in the
                                         * controller and the codec
                                         */
	
unsigned char stream_tag;	/* assigned stream */
	
unsigned char index;		/* stream index */
	
int assigned_key;		/* last device# key assigned to */

	
bool opened:1;
	
bool running:1;
	
bool prepared:1;
	
bool no_period_wakeup:1;
	
bool locked:1;

	/* timestamp */
	
unsigned long start_wallclk;	/* start + minimum wallclk */
	
unsigned long period_wallclk;	/* wallclk for period */
	
struct timecounter  tc;
	
struct cyclecounter cc;
	
int delay_negative_threshold;

	
struct list_head list;
#ifdef CONFIG_SND_HDA_DSP_LOADER
	/* DSP access mutex */
	
struct mutex dsp_mutex;
#endif
};

void snd_hdac_stream_init(struct hdac_bus *bus, struct hdac_stream *azx_dev,
			  int idx, int direction, int tag);
struct hdac_stream *snd_hdac_stream_assign(struct hdac_bus *bus,
					   struct snd_pcm_substream *substream);
void snd_hdac_stream_release(struct hdac_stream *azx_dev);
struct hdac_stream *snd_hdac_get_stream(struct hdac_bus *bus,
					int dir, int stream_tag);

int snd_hdac_stream_setup(struct hdac_stream *azx_dev);
void snd_hdac_stream_cleanup(struct hdac_stream *azx_dev);
int snd_hdac_stream_setup_periods(struct hdac_stream *azx_dev);
int snd_hdac_stream_set_params(struct hdac_stream *azx_dev,
				unsigned int format_val);
void snd_hdac_stream_start(struct hdac_stream *azx_dev, bool fresh_start);
void snd_hdac_stream_clear(struct hdac_stream *azx_dev);
void snd_hdac_stream_stop(struct hdac_stream *azx_dev);
void snd_hdac_stream_reset(struct hdac_stream *azx_dev);
void snd_hdac_stream_sync_trigger(struct hdac_stream *azx_dev, bool set,
				  unsigned int streams, unsigned int reg);
void snd_hdac_stream_sync(struct hdac_stream *azx_dev, bool start,
			  unsigned int streams);
void snd_hdac_stream_timecounter_init(struct hdac_stream *azx_dev,
				      unsigned int streams);
/*
 * macros for easy use
 */

#define _snd_hdac_stream_write(type, dev, reg, value)			\
	((dev)->bus->io_ops->reg_write ## type(value, (dev)->sd_addr + (reg)))

#define _snd_hdac_stream_read(type, dev, reg)				\
	((dev)->bus->io_ops->reg_read ## type((dev)->sd_addr + (reg)))

/* read/write a register, pass without AZX_REG_ prefix */

#define snd_hdac_stream_writel(dev, reg, value) \
	_snd_hdac_stream_write(l, dev, AZX_REG_ ## reg, value)

#define snd_hdac_stream_writew(dev, reg, value) \
	_snd_hdac_stream_write(w, dev, AZX_REG_ ## reg, value)

#define snd_hdac_stream_writeb(dev, reg, value) \
	_snd_hdac_stream_write(b, dev, AZX_REG_ ## reg, value)

#define snd_hdac_stream_readl(dev, reg) \
	_snd_hdac_stream_read(l, dev, AZX_REG_ ## reg)

#define snd_hdac_stream_readw(dev, reg) \
	_snd_hdac_stream_read(w, dev, AZX_REG_ ## reg)

#define snd_hdac_stream_readb(dev, reg) \
	_snd_hdac_stream_read(b, dev, AZX_REG_ ## reg)

/* update a register, pass without AZX_REG_ prefix */

#define snd_hdac_stream_updatel(dev, reg, mask, val) \
	snd_hdac_stream_writel(dev, reg, \
                               (snd_hdac_stream_readl(dev, reg) & \
                                ~(mask)) | (val))

#define snd_hdac_stream_updatew(dev, reg, mask, val) \
	snd_hdac_stream_writew(dev, reg, \
                               (snd_hdac_stream_readw(dev, reg) & \
                                ~(mask)) | (val))

#define snd_hdac_stream_updateb(dev, reg, mask, val) \
	snd_hdac_stream_writeb(dev, reg, \
                               (snd_hdac_stream_readb(dev, reg) & \
                                ~(mask)) | (val))

#ifdef CONFIG_SND_HDA_DSP_LOADER
/* DSP lock helpers */

#define snd_hdac_dsp_lock_init(dev)	mutex_init(&(dev)->dsp_mutex)

#define snd_hdac_dsp_lock(dev)		mutex_lock(&(dev)->dsp_mutex)

#define snd_hdac_dsp_unlock(dev)	mutex_unlock(&(dev)->dsp_mutex)

#define snd_hdac_stream_is_locked(dev)	((dev)->locked)
/* DSP loader helpers */
int snd_hdac_dsp_prepare(struct hdac_stream *azx_dev, unsigned int format,
			 unsigned int byte_size, struct snd_dma_buffer *bufp);
void snd_hdac_dsp_trigger(struct hdac_stream *azx_dev, bool start);
void snd_hdac_dsp_cleanup(struct hdac_stream *azx_dev,
			  struct snd_dma_buffer *dmab);
#else /* CONFIG_SND_HDA_DSP_LOADER */

#define snd_hdac_dsp_lock_init(dev)	do {} while (0)

#define snd_hdac_dsp_lock(dev)		do {} while (0)

#define snd_hdac_dsp_unlock(dev)	do {} while (0)

#define snd_hdac_stream_is_locked(dev)	0


static inline int

snd_hdac_dsp_prepare(struct hdac_stream *azx_dev, unsigned int format,
		     unsigned int byte_size, struct snd_dma_buffer *bufp)
{
	return 0;
}

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static inline void snd_hdac_dsp_trigger(struct hdac_stream *azx_dev, bool start)
{
}

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static inline void snd_hdac_dsp_cleanup(struct hdac_stream *azx_dev,
					struct snd_dma_buffer *dmab)
{
}
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#endif /* CONFIG_SND_HDA_DSP_LOADER */


/*
 * generic array helpers
 */
void *snd_array_new(struct snd_array *array);
void snd_array_free(struct snd_array *array);


static inline void snd_array_init(struct snd_array *array, unsigned int size,
				  unsigned int align)
{
	array->elem_size = size;
	array->alloc_align = align;
}

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static inline void *snd_array_elem(struct snd_array *array, unsigned int idx)
{
	return array->list + idx * array->elem_size;
}

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1
100.00%



static inline unsigned int snd_array_index(struct snd_array *array, void *ptr)
{
	return (unsigned long)(ptr - array->list) / array->elem_size;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
takashi iwai
takashi iwai
34
100.00%
1
100.00%
Total
34
100.00%
1
100.00%

#endif /* __SOUND_HDAUDIO_H */
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
takashi iwai
takashi iwai
2362
92.48%
23
69.70%
subhransu s. prusty
subhransu s. prusty
65
2.55%
2
6.06%
jeeja kp
jeeja kp
48
1.88%
3
9.09%
mengdong lin
mengdong lin
45
1.76%
2
6.06%
vinod koul
vinod koul
32
1.25%
2
6.06%
ramesh babu k v
ramesh babu k v
2
0.08%
1
3.03%
Total
2554
100.00%
33
100.00%
  
Directory: include/sound

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