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linux/sound/pci/hda/hda_local.h
Takashi Iwai 1a462be52f ALSA: hda: Manage concurrent reg access more properly 
In the commit 8e85def572 ("ALSA: hda: enable regmap internal
locking"), we re-enabled the regmap lock due to the reported
regression that showed the possible concurrent accesses.  It was a
temporary workaround, and there are still a few opened races even
after the revert.  In this patch, we cover those still opened windows
with a proper mutex lock and disable the regmap internal lock again.

First off, the patch introduces a new snd_hdac_device.regmap_lock
mutex that is applied for each snd_hdac_regmap_*() call, including
read, write and update helpers.  The mutex is applied carefully so
that it won't block the self-power-up procedure in the helper
function.  Also, this assures the protection for the accesses without
regmap, too.

The snd_hdac_regmap_update_raw() is refactored to use the standard
regmap_update_bits_check() function instead of the open-code.  The
non-regmap case is still open-coded but it's an easy part.  The all
read and write operations are in the single mutex protection, so it's
now race-free.

In addition, a couple of new helper functions are added:
snd_hdac_regmap_update_raw_once() and snd_hdac_regmap_sync().  Both
are called from HD-audio legacy driver.  The former is to initialize
the given verb bits but only once when it's not initialized yet.  Due
to this condition, the function invokes regcache_cache_only(), and
it's now performed inside the regmap_lock (formerly it was racy) too.
The latter function is for simply invoking regcache_sync() inside the
regmap_lock, which is called from the codec resume call path.
Along with that, the HD-audio codec driver code is slightly modified /
simplified to adapt those new functions.

And finally, snd_hdac_regmap_read_raw(), *_write_raw(), etc are
rewritten with the helper macro.  It's just for simplification because
the code logic is identical among all those functions.

Tested-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20200109090104.26073-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-01-13 13:40:41 +01:00

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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Universal Interface for Intel High Definition Audio Codec
*
* Local helper functions
*
* Copyright (c) 2004 Takashi Iwai <tiwai@suse.de>
*/
#ifndef __SOUND_HDA_LOCAL_H
#define __SOUND_HDA_LOCAL_H
/* We abuse kcontrol_new.subdev field to pass the NID corresponding to
* the given new control. If id.subdev has a bit flag HDA_SUBDEV_NID_FLAG,
* snd_hda_ctl_add() takes the lower-bit subdev value as a valid NID.
*
* Note that the subdevice field is cleared again before the real registration
* in snd_hda_ctl_add(), so that this value won't appear in the outside.
*/
#define HDA_SUBDEV_NID_FLAG (1U << 31)
#define HDA_SUBDEV_AMP_FLAG (1U << 30)
/*
* for mixer controls
*/
#define HDA_COMPOSE_AMP_VAL_OFS(nid,chs,idx,dir,ofs) \
((nid) | ((chs)<<16) | ((dir)<<18) | ((idx)<<19) | ((ofs)<<23))
#define HDA_AMP_VAL_MIN_MUTE (1<<29)
#define HDA_COMPOSE_AMP_VAL(nid,chs,idx,dir) \
HDA_COMPOSE_AMP_VAL_OFS(nid, chs, idx, dir, 0)
/* mono volume with index (index=0,1,...) (channel=1,2) */
#define HDA_CODEC_VOLUME_MONO_IDX(xname, xcidx, nid, channel, xindex, dir, flags) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xcidx, \
.subdevice = HDA_SUBDEV_AMP_FLAG, \
.access = SNDRV_CTL_ELEM_ACCESS_READWRITE | \
SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK, \
.info = snd_hda_mixer_amp_volume_info, \
.get = snd_hda_mixer_amp_volume_get, \
.put = snd_hda_mixer_amp_volume_put, \
.tlv = { .c = snd_hda_mixer_amp_tlv }, \
.private_value = HDA_COMPOSE_AMP_VAL(nid, channel, xindex, dir) | flags }
/* stereo volume with index */
#define HDA_CODEC_VOLUME_IDX(xname, xcidx, nid, xindex, direction) \
HDA_CODEC_VOLUME_MONO_IDX(xname, xcidx, nid, 3, xindex, direction, 0)
/* mono volume */
#define HDA_CODEC_VOLUME_MONO(xname, nid, channel, xindex, direction) \
HDA_CODEC_VOLUME_MONO_IDX(xname, 0, nid, channel, xindex, direction, 0)
/* stereo volume */
#define HDA_CODEC_VOLUME(xname, nid, xindex, direction) \
HDA_CODEC_VOLUME_MONO(xname, nid, 3, xindex, direction)
/* stereo volume with min=mute */
#define HDA_CODEC_VOLUME_MIN_MUTE(xname, nid, xindex, direction) \
HDA_CODEC_VOLUME_MONO_IDX(xname, 0, nid, 3, xindex, direction, \
HDA_AMP_VAL_MIN_MUTE)
/* mono mute switch with index (index=0,1,...) (channel=1,2) */
#define HDA_CODEC_MUTE_MONO_IDX(xname, xcidx, nid, channel, xindex, direction) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xcidx, \
.subdevice = HDA_SUBDEV_AMP_FLAG, \
.info = snd_hda_mixer_amp_switch_info, \
.get = snd_hda_mixer_amp_switch_get, \
.put = snd_hda_mixer_amp_switch_put, \
.private_value = HDA_COMPOSE_AMP_VAL(nid, channel, xindex, direction) }
/* stereo mute switch with index */
#define HDA_CODEC_MUTE_IDX(xname, xcidx, nid, xindex, direction) \
HDA_CODEC_MUTE_MONO_IDX(xname, xcidx, nid, 3, xindex, direction)
/* mono mute switch */
#define HDA_CODEC_MUTE_MONO(xname, nid, channel, xindex, direction) \
HDA_CODEC_MUTE_MONO_IDX(xname, 0, nid, channel, xindex, direction)
/* stereo mute switch */
#define HDA_CODEC_MUTE(xname, nid, xindex, direction) \
HDA_CODEC_MUTE_MONO(xname, nid, 3, xindex, direction)
#ifdef CONFIG_SND_HDA_INPUT_BEEP
/* special beep mono mute switch with index (index=0,1,...) (channel=1,2) */
#define HDA_CODEC_MUTE_BEEP_MONO_IDX(xname, xcidx, nid, channel, xindex, direction) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xcidx, \
.subdevice = HDA_SUBDEV_AMP_FLAG, \
.info = snd_hda_mixer_amp_switch_info, \
.get = snd_hda_mixer_amp_switch_get_beep, \
.put = snd_hda_mixer_amp_switch_put_beep, \
.private_value = HDA_COMPOSE_AMP_VAL(nid, channel, xindex, direction) }
#else
/* no digital beep - just the standard one */
#define HDA_CODEC_MUTE_BEEP_MONO_IDX(xname, xcidx, nid, ch, xidx, dir) \
HDA_CODEC_MUTE_MONO_IDX(xname, xcidx, nid, ch, xidx, dir)
#endif /* CONFIG_SND_HDA_INPUT_BEEP */
/* special beep mono mute switch */
#define HDA_CODEC_MUTE_BEEP_MONO(xname, nid, channel, xindex, direction) \
HDA_CODEC_MUTE_BEEP_MONO_IDX(xname, 0, nid, channel, xindex, direction)
/* special beep stereo mute switch */
#define HDA_CODEC_MUTE_BEEP(xname, nid, xindex, direction) \
HDA_CODEC_MUTE_BEEP_MONO(xname, nid, 3, xindex, direction)
extern const char *snd_hda_pcm_type_name[];
int snd_hda_mixer_amp_volume_info(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo);
int snd_hda_mixer_amp_volume_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol);
int snd_hda_mixer_amp_volume_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol);
int snd_hda_mixer_amp_tlv(struct snd_kcontrol *kcontrol, int op_flag,
unsigned int size, unsigned int __user *tlv);
int snd_hda_mixer_amp_switch_info(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo);
int snd_hda_mixer_amp_switch_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol);
int snd_hda_mixer_amp_switch_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol);
#ifdef CONFIG_SND_HDA_INPUT_BEEP
int snd_hda_mixer_amp_switch_get_beep(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol);
int snd_hda_mixer_amp_switch_put_beep(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol);
#endif
/* lowlevel accessor with caching; use carefully */
#define snd_hda_codec_amp_read(codec, nid, ch, dir, idx) \
snd_hdac_regmap_get_amp(&(codec)->core, nid, ch, dir, idx)
int snd_hda_codec_amp_update(struct hda_codec *codec, hda_nid_t nid,
int ch, int dir, int idx, int mask, int val);
int snd_hda_codec_amp_stereo(struct hda_codec *codec, hda_nid_t nid,
int dir, int idx, int mask, int val);
int snd_hda_codec_amp_init(struct hda_codec *codec, hda_nid_t nid, int ch,
int direction, int idx, int mask, int val);
int snd_hda_codec_amp_init_stereo(struct hda_codec *codec, hda_nid_t nid,
int dir, int idx, int mask, int val);
void snd_hda_set_vmaster_tlv(struct hda_codec *codec, hda_nid_t nid, int dir,
unsigned int *tlv);
struct snd_kcontrol *snd_hda_find_mixer_ctl(struct hda_codec *codec,
const char *name);
int __snd_hda_add_vmaster(struct hda_codec *codec, char *name,
unsigned int *tlv, const char * const *slaves,
const char *suffix, bool init_slave_vol,
struct snd_kcontrol **ctl_ret);
#define snd_hda_add_vmaster(codec, name, tlv, slaves, suffix) \
__snd_hda_add_vmaster(codec, name, tlv, slaves, suffix, true, NULL)
int snd_hda_codec_reset(struct hda_codec *codec);
void snd_hda_codec_register(struct hda_codec *codec);
void snd_hda_codec_cleanup_for_unbind(struct hda_codec *codec);
#define snd_hda_regmap_sync(codec) snd_hdac_regmap_sync(&(codec)->core)
enum {
HDA_VMUTE_OFF,
HDA_VMUTE_ON,
HDA_VMUTE_FOLLOW_MASTER,
};
struct hda_vmaster_mute_hook {
/* below two fields must be filled by the caller of
* snd_hda_add_vmaster_hook() beforehand
*/
struct snd_kcontrol *sw_kctl;
void (*hook)(void *, int);
/* below are initialized automatically */
unsigned int mute_mode; /* HDA_VMUTE_XXX */
struct hda_codec *codec;
};
int snd_hda_add_vmaster_hook(struct hda_codec *codec,
struct hda_vmaster_mute_hook *hook,
bool expose_enum_ctl);
void snd_hda_sync_vmaster_hook(struct hda_vmaster_mute_hook *hook);
/* amp value bits */
#define HDA_AMP_MUTE 0x80
#define HDA_AMP_UNMUTE 0x00
#define HDA_AMP_VOLMASK 0x7f
/*
* SPDIF I/O
*/
int snd_hda_create_dig_out_ctls(struct hda_codec *codec,
hda_nid_t associated_nid,
hda_nid_t cvt_nid, int type);
#define snd_hda_create_spdif_out_ctls(codec, anid, cnid) \
snd_hda_create_dig_out_ctls(codec, anid, cnid, HDA_PCM_TYPE_SPDIF)
int snd_hda_create_spdif_in_ctls(struct hda_codec *codec, hda_nid_t nid);
/*
* input MUX helper
*/
#define HDA_MAX_NUM_INPUTS 16
struct hda_input_mux_item {
char label[32];
unsigned int index;
};
struct hda_input_mux {
unsigned int num_items;
struct hda_input_mux_item items[HDA_MAX_NUM_INPUTS];
};
int snd_hda_input_mux_info(const struct hda_input_mux *imux,
struct snd_ctl_elem_info *uinfo);
int snd_hda_input_mux_put(struct hda_codec *codec,
const struct hda_input_mux *imux,
struct snd_ctl_elem_value *ucontrol, hda_nid_t nid,
unsigned int *cur_val);
int snd_hda_add_imux_item(struct hda_codec *codec,
struct hda_input_mux *imux, const char *label,
int index, int *type_index_ret);
/*
* Multi-channel / digital-out PCM helper
*/
enum { HDA_FRONT, HDA_REAR, HDA_CLFE, HDA_SIDE }; /* index for dac_nidx */
enum { HDA_DIG_NONE, HDA_DIG_EXCLUSIVE, HDA_DIG_ANALOG_DUP }; /* dig_out_used */
#define HDA_MAX_OUTS 5
struct hda_multi_out {
int num_dacs; /* # of DACs, must be more than 1 */
const hda_nid_t *dac_nids; /* DAC list */
hda_nid_t hp_nid; /* optional DAC for HP, 0 when not exists */
hda_nid_t hp_out_nid[HDA_MAX_OUTS]; /* DACs for multiple HPs */
hda_nid_t extra_out_nid[HDA_MAX_OUTS]; /* other (e.g. speaker) DACs */
hda_nid_t dig_out_nid; /* digital out audio widget */
const hda_nid_t *slave_dig_outs;
int max_channels; /* currently supported analog channels */
int dig_out_used; /* current usage of digital out (HDA_DIG_XXX) */
int no_share_stream; /* don't share a stream with multiple pins */
int share_spdif; /* share SPDIF pin */
/* PCM information for both analog and SPDIF DACs */
unsigned int analog_rates;
unsigned int analog_maxbps;
u64 analog_formats;
unsigned int spdif_rates;
unsigned int spdif_maxbps;
u64 spdif_formats;
};
int snd_hda_create_spdif_share_sw(struct hda_codec *codec,
struct hda_multi_out *mout);
int snd_hda_multi_out_dig_open(struct hda_codec *codec,
struct hda_multi_out *mout);
int snd_hda_multi_out_dig_close(struct hda_codec *codec,
struct hda_multi_out *mout);
int snd_hda_multi_out_dig_prepare(struct hda_codec *codec,
struct hda_multi_out *mout,
unsigned int stream_tag,
unsigned int format,
struct snd_pcm_substream *substream);
int snd_hda_multi_out_dig_cleanup(struct hda_codec *codec,
struct hda_multi_out *mout);
int snd_hda_multi_out_analog_open(struct hda_codec *codec,
struct hda_multi_out *mout,
struct snd_pcm_substream *substream,
struct hda_pcm_stream *hinfo);
int snd_hda_multi_out_analog_prepare(struct hda_codec *codec,
struct hda_multi_out *mout,
unsigned int stream_tag,
unsigned int format,
struct snd_pcm_substream *substream);
int snd_hda_multi_out_analog_cleanup(struct hda_codec *codec,
struct hda_multi_out *mout);
/*
* generic proc interface
*/
#ifdef CONFIG_SND_PROC_FS
int snd_hda_codec_proc_new(struct hda_codec *codec);
#else
static inline int snd_hda_codec_proc_new(struct hda_codec *codec) { return 0; }
#endif
#define SND_PRINT_BITS_ADVISED_BUFSIZE 16
void snd_print_pcm_bits(int pcm, char *buf, int buflen);
/*
* Misc
*/
int snd_hda_add_new_ctls(struct hda_codec *codec,
const struct snd_kcontrol_new *knew);
/*
* Fix-up pin default configurations and add default verbs
*/
struct hda_pintbl {
hda_nid_t nid;
u32 val;
};
struct hda_model_fixup {
const int id;
const char *name;
};
struct hda_fixup {
int type;
bool chained:1; /* call the chained fixup(s) after this */
bool chained_before:1; /* call the chained fixup(s) before this */
int chain_id;
union {
const struct hda_pintbl *pins;
const struct hda_verb *verbs;
void (*func)(struct hda_codec *codec,
const struct hda_fixup *fix,
int action);
} v;
};
struct snd_hda_pin_quirk {
unsigned int codec; /* Codec vendor/device ID */
unsigned short subvendor; /* PCI subvendor ID */
const struct hda_pintbl *pins; /* list of matching pins */
#ifdef CONFIG_SND_DEBUG_VERBOSE
const char *name;
#endif
int value; /* quirk value */
};
#ifdef CONFIG_SND_DEBUG_VERBOSE
#define SND_HDA_PIN_QUIRK(_codec, _subvendor, _name, _value, _pins...) \
{ .codec = _codec,\
.subvendor = _subvendor,\
.name = _name,\
.value = _value,\
.pins = (const struct hda_pintbl[]) { _pins, {0, 0}} \
}
#else
#define SND_HDA_PIN_QUIRK(_codec, _subvendor, _name, _value, _pins...) \
{ .codec = _codec,\
.subvendor = _subvendor,\
.value = _value,\
.pins = (const struct hda_pintbl[]) { _pins, {0, 0}} \
}
#endif
#define HDA_FIXUP_ID_NOT_SET -1
#define HDA_FIXUP_ID_NO_FIXUP -2
/* fixup types */
enum {
HDA_FIXUP_INVALID,
HDA_FIXUP_PINS,
HDA_FIXUP_VERBS,
HDA_FIXUP_FUNC,
HDA_FIXUP_PINCTLS,
};
/* fixup action definitions */
enum {
HDA_FIXUP_ACT_PRE_PROBE,
HDA_FIXUP_ACT_PROBE,
HDA_FIXUP_ACT_INIT,
HDA_FIXUP_ACT_BUILD,
HDA_FIXUP_ACT_FREE,
};
int snd_hda_add_verbs(struct hda_codec *codec, const struct hda_verb *list);
void snd_hda_apply_verbs(struct hda_codec *codec);
void snd_hda_apply_pincfgs(struct hda_codec *codec,
const struct hda_pintbl *cfg);
void snd_hda_apply_fixup(struct hda_codec *codec, int action);
void snd_hda_pick_fixup(struct hda_codec *codec,
const struct hda_model_fixup *models,
const struct snd_pci_quirk *quirk,
const struct hda_fixup *fixlist);
void snd_hda_pick_pin_fixup(struct hda_codec *codec,
const struct snd_hda_pin_quirk *pin_quirk,
const struct hda_fixup *fixlist,
bool match_all_pins);
/* helper macros to retrieve pin default-config values */
#define get_defcfg_connect(cfg) \
((cfg & AC_DEFCFG_PORT_CONN) >> AC_DEFCFG_PORT_CONN_SHIFT)
#define get_defcfg_association(cfg) \
((cfg & AC_DEFCFG_DEF_ASSOC) >> AC_DEFCFG_ASSOC_SHIFT)
#define get_defcfg_location(cfg) \
((cfg & AC_DEFCFG_LOCATION) >> AC_DEFCFG_LOCATION_SHIFT)
#define get_defcfg_sequence(cfg) \
(cfg & AC_DEFCFG_SEQUENCE)
#define get_defcfg_device(cfg) \
((cfg & AC_DEFCFG_DEVICE) >> AC_DEFCFG_DEVICE_SHIFT)
#define get_defcfg_misc(cfg) \
((cfg & AC_DEFCFG_MISC) >> AC_DEFCFG_MISC_SHIFT)
/* amp values */
#define AMP_IN_MUTE(idx) (0x7080 | ((idx)<<8))
#define AMP_IN_UNMUTE(idx) (0x7000 | ((idx)<<8))
#define AMP_OUT_MUTE 0xb080
#define AMP_OUT_UNMUTE 0xb000
#define AMP_OUT_ZERO 0xb000
/* pinctl values */
#define PIN_IN (AC_PINCTL_IN_EN)
#define PIN_VREFHIZ (AC_PINCTL_IN_EN | AC_PINCTL_VREF_HIZ)
#define PIN_VREF50 (AC_PINCTL_IN_EN | AC_PINCTL_VREF_50)
#define PIN_VREFGRD (AC_PINCTL_IN_EN | AC_PINCTL_VREF_GRD)
#define PIN_VREF80 (AC_PINCTL_IN_EN | AC_PINCTL_VREF_80)
#define PIN_VREF100 (AC_PINCTL_IN_EN | AC_PINCTL_VREF_100)
#define PIN_OUT (AC_PINCTL_OUT_EN)
#define PIN_HP (AC_PINCTL_OUT_EN | AC_PINCTL_HP_EN)
#define PIN_HP_AMP (AC_PINCTL_HP_EN)
unsigned int snd_hda_get_default_vref(struct hda_codec *codec, hda_nid_t pin);
unsigned int snd_hda_correct_pin_ctl(struct hda_codec *codec,
hda_nid_t pin, unsigned int val);
int _snd_hda_set_pin_ctl(struct hda_codec *codec, hda_nid_t pin,
unsigned int val, bool cached);
/**
* _snd_hda_set_pin_ctl - Set a pin-control value safely
* @codec: the codec instance
* @pin: the pin NID to set the control
* @val: the pin-control value (AC_PINCTL_* bits)
*
* This function sets the pin-control value to the given pin, but
* filters out the invalid pin-control bits when the pin has no such
* capabilities. For example, when PIN_HP is passed but the pin has no
* HP-drive capability, the HP bit is omitted.
*
* The function doesn't check the input VREF capability bits, though.
* Use snd_hda_get_default_vref() to guess the right value.
* Also, this function is only for analog pins, not for HDMI pins.
*/
static inline int
snd_hda_set_pin_ctl(struct hda_codec *codec, hda_nid_t pin, unsigned int val)
{
return _snd_hda_set_pin_ctl(codec, pin, val, false);
}
/**
* snd_hda_set_pin_ctl_cache - Set a pin-control value safely
* @codec: the codec instance
* @pin: the pin NID to set the control
* @val: the pin-control value (AC_PINCTL_* bits)
*
* Just like snd_hda_set_pin_ctl() but write to cache as well.
*/
static inline int
snd_hda_set_pin_ctl_cache(struct hda_codec *codec, hda_nid_t pin,
unsigned int val)
{
return _snd_hda_set_pin_ctl(codec, pin, val, true);
}
int snd_hda_codec_get_pin_target(struct hda_codec *codec, hda_nid_t nid);
int snd_hda_codec_set_pin_target(struct hda_codec *codec, hda_nid_t nid,
unsigned int val);
#define for_each_hda_codec_node(nid, codec) \
for ((nid) = (codec)->core.start_nid; (nid) < (codec)->core.end_nid; (nid)++)
/*
* get widget capabilities
*/
static inline u32 get_wcaps(struct hda_codec *codec, hda_nid_t nid)
{
if (nid < codec->core.start_nid ||
nid >= codec->core.start_nid + codec->core.num_nodes)
return 0;
return codec->wcaps[nid - codec->core.start_nid];
}
/* get the widget type from widget capability bits */
static inline int get_wcaps_type(unsigned int wcaps)
{
if (!wcaps)
return -1; /* invalid type */
return (wcaps & AC_WCAP_TYPE) >> AC_WCAP_TYPE_SHIFT;
}
static inline unsigned int get_wcaps_channels(u32 wcaps)
{
unsigned int chans;
chans = (wcaps & AC_WCAP_CHAN_CNT_EXT) >> 13;
chans = ((chans << 1) | 1) + 1;
return chans;
}
static inline void snd_hda_override_wcaps(struct hda_codec *codec,
hda_nid_t nid, u32 val)
{
if (nid >= codec->core.start_nid &&
nid < codec->core.start_nid + codec->core.num_nodes)
codec->wcaps[nid - codec->core.start_nid] = val;
}
u32 query_amp_caps(struct hda_codec *codec, hda_nid_t nid, int direction);
int snd_hda_override_amp_caps(struct hda_codec *codec, hda_nid_t nid, int dir,
unsigned int caps);
/**
* snd_hda_query_pin_caps - Query PIN capabilities
* @codec: the HD-auio codec
* @nid: the NID to query
*
* Query PIN capabilities for the given widget.
* Returns the obtained capability bits.
*
* When cap bits have been already read, this doesn't read again but
* returns the cached value.
*/
static inline u32
snd_hda_query_pin_caps(struct hda_codec *codec, hda_nid_t nid)
{
return snd_hda_param_read(codec, nid, AC_PAR_PIN_CAP);
}
/**
* snd_hda_override_pin_caps - Override the pin capabilities
* @codec: the CODEC
* @nid: the NID to override
* @caps: the capability bits to set
*
* Override the cached PIN capabilitiy bits value by the given one.
*
* Returns zero if successful or a negative error code.
*/
static inline int
snd_hda_override_pin_caps(struct hda_codec *codec, hda_nid_t nid,
unsigned int caps)
{
return snd_hdac_override_parm(&codec->core, nid, AC_PAR_PIN_CAP, caps);
}
bool snd_hda_check_amp_caps(struct hda_codec *codec, hda_nid_t nid,
int dir, unsigned int bits);
#define nid_has_mute(codec, nid, dir) \
snd_hda_check_amp_caps(codec, nid, dir, (AC_AMPCAP_MUTE | AC_AMPCAP_MIN_MUTE))
#define nid_has_volume(codec, nid, dir) \
snd_hda_check_amp_caps(codec, nid, dir, AC_AMPCAP_NUM_STEPS)
/* flags for hda_nid_item */
#define HDA_NID_ITEM_AMP (1<<0)
struct hda_nid_item {
struct snd_kcontrol *kctl;
unsigned int index;
hda_nid_t nid;
unsigned short flags;
};
int snd_hda_ctl_add(struct hda_codec *codec, hda_nid_t nid,
struct snd_kcontrol *kctl);
int snd_hda_add_nid(struct hda_codec *codec, struct snd_kcontrol *kctl,
unsigned int index, hda_nid_t nid);
void snd_hda_ctls_clear(struct hda_codec *codec);
/*
* hwdep interface
*/
#ifdef CONFIG_SND_HDA_HWDEP
int snd_hda_create_hwdep(struct hda_codec *codec);
#else
static inline int snd_hda_create_hwdep(struct hda_codec *codec) { return 0; }
#endif
void snd_hda_sysfs_init(struct hda_codec *codec);
void snd_hda_sysfs_clear(struct hda_codec *codec);
extern const struct attribute_group *snd_hda_dev_attr_groups[];
#ifdef CONFIG_SND_HDA_RECONFIG
const char *snd_hda_get_hint(struct hda_codec *codec, const char *key);
int snd_hda_get_bool_hint(struct hda_codec *codec, const char *key);
int snd_hda_get_int_hint(struct hda_codec *codec, const char *key, int *valp);
#else
static inline
const char *snd_hda_get_hint(struct hda_codec *codec, const char *key)
{
return NULL;
}
static inline
int snd_hda_get_bool_hint(struct hda_codec *codec, const char *key)
{
return -ENOENT;
}
static inline
int snd_hda_get_int_hint(struct hda_codec *codec, const char *key, int *valp)
{
return -ENOENT;
}
#endif
/*
* power-management
*/
void snd_hda_schedule_power_save(struct hda_codec *codec);
struct hda_amp_list {
hda_nid_t nid;
unsigned char dir;
unsigned char idx;
};
struct hda_loopback_check {
const struct hda_amp_list *amplist;
int power_on;
};
int snd_hda_check_amp_list_power(struct hda_codec *codec,
struct hda_loopback_check *check,
hda_nid_t nid);
/* check whether the actual power state matches with the target state */
static inline bool
snd_hda_check_power_state(struct hda_codec *codec, hda_nid_t nid,
unsigned int target_state)
{
return snd_hdac_check_power_state(&codec->core, nid, target_state);
}
static inline unsigned int snd_hda_sync_power_state(struct hda_codec *codec,
hda_nid_t nid,
unsigned int target_state)
{
return snd_hdac_sync_power_state(&codec->core, nid, target_state);
}
unsigned int snd_hda_codec_eapd_power_filter(struct hda_codec *codec,
hda_nid_t nid,
unsigned int power_state);
/*
* AMP control callbacks
*/
/* retrieve parameters from private_value */
#define get_amp_nid_(pv) ((pv) & 0xffff)
#define get_amp_nid(kc) get_amp_nid_((kc)->private_value)
#define get_amp_channels(kc) (((kc)->private_value >> 16) & 0x3)
#define get_amp_direction_(pv) (((pv) >> 18) & 0x1)
#define get_amp_direction(kc) get_amp_direction_((kc)->private_value)
#define get_amp_index_(pv) (((pv) >> 19) & 0xf)
#define get_amp_index(kc) get_amp_index_((kc)->private_value)
#define get_amp_offset(kc) (((kc)->private_value >> 23) & 0x3f)
#define get_amp_min_mute(kc) (((kc)->private_value >> 29) & 0x1)
/*
* enum control helper
*/
int snd_hda_enum_helper_info(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo,
int num_entries, const char * const *texts);
#define snd_hda_enum_bool_helper_info(kcontrol, uinfo) \
snd_hda_enum_helper_info(kcontrol, uinfo, 0, NULL)
/*
* CEA Short Audio Descriptor data
*/
struct cea_sad {
int channels;
int format; /* (format == 0) indicates invalid SAD */
int rates;
int sample_bits; /* for LPCM */
int max_bitrate; /* for AC3...ATRAC */
int profile; /* for WMAPRO */
};
#define ELD_FIXED_BYTES 20
#define ELD_MAX_SIZE 256
#define ELD_MAX_MNL 16
#define ELD_MAX_SAD 16
/*
* ELD: EDID Like Data
*/
struct parsed_hdmi_eld {
/*
* all fields will be cleared before updating ELD
*/
int baseline_len;
int eld_ver;
int cea_edid_ver;
char monitor_name[ELD_MAX_MNL + 1];
int manufacture_id;
int product_id;
u64 port_id;
int support_hdcp;
int support_ai;
int conn_type;
int aud_synch_delay;
int spk_alloc;
int sad_count;
struct cea_sad sad[ELD_MAX_SAD];
};
struct hdmi_eld {
bool monitor_present;
bool eld_valid;
int eld_size;
char eld_buffer[ELD_MAX_SIZE];
struct parsed_hdmi_eld info;
};
int snd_hdmi_get_eld_size(struct hda_codec *codec, hda_nid_t nid);
int snd_hdmi_get_eld(struct hda_codec *codec, hda_nid_t nid,
unsigned char *buf, int *eld_size);
int snd_hdmi_parse_eld(struct hda_codec *codec, struct parsed_hdmi_eld *e,
const unsigned char *buf, int size);
void snd_hdmi_show_eld(struct hda_codec *codec, struct parsed_hdmi_eld *e);
void snd_hdmi_eld_update_pcm_info(struct parsed_hdmi_eld *e,
struct hda_pcm_stream *hinfo);
int snd_hdmi_get_eld_ati(struct hda_codec *codec, hda_nid_t nid,
unsigned char *buf, int *eld_size,
bool rev3_or_later);
#ifdef CONFIG_SND_PROC_FS
void snd_hdmi_print_eld_info(struct hdmi_eld *eld,
struct snd_info_buffer *buffer);
void snd_hdmi_write_eld_info(struct hdmi_eld *eld,
struct snd_info_buffer *buffer);
#endif
#define SND_PRINT_CHANNEL_ALLOCATION_ADVISED_BUFSIZE 80
void snd_print_channel_allocation(int spk_alloc, char *buf, int buflen);
/*
*/
#define codec_err(codec, fmt, args...) \
dev_err(hda_codec_dev(codec), fmt, ##args)
#define codec_warn(codec, fmt, args...) \
dev_warn(hda_codec_dev(codec), fmt, ##args)
#define codec_info(codec, fmt, args...) \
dev_info(hda_codec_dev(codec), fmt, ##args)
#define codec_dbg(codec, fmt, args...) \
dev_dbg(hda_codec_dev(codec), fmt, ##args)
#endif /* __SOUND_HDA_LOCAL_H */
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