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Merge branch 'topic/jack' into for-next

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This commit is contained in:
Takashi Iwai 2015-04-28 08:31:31 +02:00
commit 1962fcab4e
13 changed files with 244 additions and 102 deletions
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43
Documentation/sound/alsa/Jack-Controls.txt Normal file
View File

@ -0,0 +1,43 @@
Why we need Jack kcontrols
==========================
ALSA uses kcontrols to export audio controls(switch, volume, Mux, ...)
to user space. This means userspace applications like pulseaudio can
switch off headphones and switch on speakers when no headphones are
pluged in.
The old ALSA jack code only created input devices for each registered
jack. These jack input devices are not readable by userspace devices
that run as non root.
The new jack code creates embedded jack kcontrols for each jack that
can be read by any process.
This can be combined with UCM to allow userspace to route audio more
intelligently based on jack insertion or removal events.
Jack Kcontrol Internals
=======================
Each jack will have a kcontrol list, so that we can create a kcontrol
and attach it to the jack, at jack creation stage. We can also add a
kcontrol to an existing jack, at anytime when required.
Those kcontrols will be freed automatically when the Jack is freed.
How to use jack kcontrols
=========================
In order to keep compatibility, snd_jack_new() has been modified by
adding two params :-
- @initial_kctl: if true, create a kcontrol and add it to the jack
list.
- @phantom_jack: Don't create a input device for phantom jacks.
HDA jacks can set phantom_jack to true in order to create a phantom
jack and set initial_kctl to true to create an initial kcontrol with
the correct id.
ASoC jacks should set initial_kctl as false. The pin name will be
assigned as the jack kcontrol name.

2
include/sound/control.h
View File

@ -252,7 +252,7 @@ void snd_ctl_sync_vmaster(struct snd_kcontrol *kctl, bool hook_only);
* Helper functions for jack-detection controls
*/
struct snd_kcontrol *
snd_kctl_jack_new(const char *name, int idx, void *private_data);
snd_kctl_jack_new(const char *name, struct snd_card *card);
void snd_kctl_jack_report(struct snd_card *card,
struct snd_kcontrol *kctl, bool status);

13
include/sound/jack.h
View File

@ -73,6 +73,8 @@ enum snd_jack_types {
struct snd_jack {
struct input_dev *input_dev;
struct list_head kctl_list;
struct snd_card *card;
int registered;
int type;
const char *id;
@ -85,7 +87,8 @@ struct snd_jack {
#ifdef CONFIG_SND_JACK
int snd_jack_new(struct snd_card *card, const char *id, int type,
struct snd_jack **jack);
struct snd_jack **jack, bool initial_kctl, bool phantom_jack);
int snd_jack_add_new_kctl(struct snd_jack *jack, const char * name, int mask);
void snd_jack_set_parent(struct snd_jack *jack, struct device *parent);
int snd_jack_set_key(struct snd_jack *jack, enum snd_jack_types type,
int keytype);
@ -93,9 +96,13 @@ int snd_jack_set_key(struct snd_jack *jack, enum snd_jack_types type,
void snd_jack_report(struct snd_jack *jack, int status);
#else
static inline int snd_jack_new(struct snd_card *card, const char *id, int type,
struct snd_jack **jack)
struct snd_jack **jack, bool initial_kctl, bool phantom_jack)
{
return 0;
}
static inline int snd_jack_add_new_kctl(struct snd_jack *jack, const char * name, int mask)
{
return 0;
}

3
sound/core/Kconfig
View File

@ -221,9 +221,6 @@ config SND_PCM_XRUN_DEBUG
config SND_VMASTER
bool
config SND_KCTL_JACK
bool
config SND_DMA_SGBUF
def_bool y
depends on X86

3
sound/core/Makefile
View File

@ -11,8 +11,7 @@ endif
snd-$(CONFIG_ISA_DMA_API) += isadma.o
snd-$(CONFIG_SND_OSSEMUL) += sound_oss.o
snd-$(CONFIG_SND_VMASTER) += vmaster.o
snd-$(CONFIG_SND_KCTL_JACK) += ctljack.o
snd-$(CONFIG_SND_JACK) += jack.o
snd-$(CONFIG_SND_JACK) += ctljack.o jack.o
snd-pcm-y := pcm.o pcm_native.o pcm_lib.o pcm_timer.o pcm_misc.o \
pcm_memory.o memalloc.o

41
sound/core/ctljack.c
View File

@ -31,19 +31,49 @@ static struct snd_kcontrol_new jack_detect_kctl = {
.get = jack_detect_kctl_get,
};
static int get_available_index(struct snd_card *card, const char *name)
{
struct snd_ctl_elem_id sid;
memset(&sid, 0, sizeof(sid));
sid.index = 0;
sid.iface = SNDRV_CTL_ELEM_IFACE_CARD;
strlcpy(sid.name, name, sizeof(sid.name));
while (snd_ctl_find_id(card, &sid))
sid.index++;
return sid.index;
}
static void jack_kctl_name_gen(char *name, const char *src_name, int size)
{
size_t count = strlen(src_name);
bool need_cat = true;
/* remove redundant " Jack" from src_name */
if (count >= 5)
need_cat = strncmp(&src_name[count - 5], " Jack", 5) ? true : false;
snprintf(name, size, need_cat ? "%s Jack" : "%s", src_name);
}
struct snd_kcontrol *
snd_kctl_jack_new(const char *name, int idx, void *private_data)
snd_kctl_jack_new(const char *name, struct snd_card *card)
{
struct snd_kcontrol *kctl;
kctl = snd_ctl_new1(&jack_detect_kctl, private_data);
kctl = snd_ctl_new1(&jack_detect_kctl, NULL);
if (!kctl)
return NULL;
snprintf(kctl->id.name, sizeof(kctl->id.name), "%s Jack", name);
kctl->id.index = idx;
jack_kctl_name_gen(kctl->id.name, name, sizeof(kctl->id.name));
kctl->id.index = get_available_index(card, name);
kctl->private_value = 0;
return kctl;
}
EXPORT_SYMBOL_GPL(snd_kctl_jack_new);
void snd_kctl_jack_report(struct snd_card *card,
struct snd_kcontrol *kctl, bool status)
@ -53,4 +83,3 @@ void snd_kctl_jack_report(struct snd_card *card,
kctl->private_value = status;
snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
}
EXPORT_SYMBOL_GPL(snd_kctl_jack_report);

137
sound/core/jack.c
View File

@ -24,6 +24,13 @@
#include <linux/module.h>
#include <sound/jack.h>
#include <sound/core.h>
#include <sound/control.h>
struct snd_jack_kctl {
struct snd_kcontrol *kctl;
struct list_head list; /* list of controls belong to the same jack */
unsigned int mask_bits; /* only masked status bits are reported via kctl */
};
static int jack_switch_types[SND_JACK_SWITCH_TYPES] = {
SW_HEADPHONE_INSERT,
@ -54,7 +61,13 @@ static int snd_jack_dev_disconnect(struct snd_device *device)
static int snd_jack_dev_free(struct snd_device *device)
{
struct snd_jack *jack = device->device_data;
struct snd_card *card = device->card;
struct snd_jack_kctl *jack_kctl, *tmp_jack_kctl;
list_for_each_entry_safe(jack_kctl, tmp_jack_kctl, &jack->kctl_list, list) {
list_del_init(&jack_kctl->list);
snd_ctl_remove(card, jack_kctl->kctl);
}
if (jack->private_free)
jack->private_free(jack);
@ -100,6 +113,77 @@ static int snd_jack_dev_register(struct snd_device *device)
return err;
}
static void snd_jack_kctl_private_free(struct snd_kcontrol *kctl)
{
struct snd_jack_kctl *jack_kctl;
jack_kctl = kctl->private_data;
if (jack_kctl) {
list_del(&jack_kctl->list);
kfree(jack_kctl);
}
}
static void snd_jack_kctl_add(struct snd_jack *jack, struct snd_jack_kctl *jack_kctl)
{
list_add_tail(&jack_kctl->list, &jack->kctl_list);
}
static struct snd_jack_kctl * snd_jack_kctl_new(struct snd_card *card, const char *name, unsigned int mask)
{
struct snd_kcontrol *kctl;
struct snd_jack_kctl *jack_kctl;
int err;
kctl = snd_kctl_jack_new(name, card);
if (!kctl)
return NULL;
err = snd_ctl_add(card, kctl);
if (err < 0)
return NULL;
jack_kctl = kzalloc(sizeof(*jack_kctl), GFP_KERNEL);
if (!jack_kctl)
goto error;
jack_kctl->kctl = kctl;
jack_kctl->mask_bits = mask;
kctl->private_data = jack_kctl;
kctl->private_free = snd_jack_kctl_private_free;
return jack_kctl;
error:
snd_ctl_free_one(kctl);
return NULL;
}
/**
* snd_jack_add_new_kctl - Create a new snd_jack_kctl and add it to jack
* @jack: the jack instance which the kctl will attaching to
* @name: the name for the snd_kcontrol object
* @mask: a bitmask of enum snd_jack_type values that can be detected
* by this snd_jack_kctl object.
*
* Creates a new snd_kcontrol object and adds it to the jack kctl_list.
*
* Return: Zero if successful, or a negative error code on failure.
*/
int snd_jack_add_new_kctl(struct snd_jack *jack, const char * name, int mask)
{
struct snd_jack_kctl *jack_kctl;
jack_kctl = snd_jack_kctl_new(jack->card, name, mask);
if (!jack_kctl)
return -ENOMEM;
snd_jack_kctl_add(jack, jack_kctl);
return 0;
}
EXPORT_SYMBOL(snd_jack_add_new_kctl);
/**
* snd_jack_new - Create a new jack
* @card: the card instance
@ -107,6 +191,8 @@ static int snd_jack_dev_register(struct snd_device *device)
* @type: a bitmask of enum snd_jack_type values that can be detected by
* this jack
* @jjack: Used to provide the allocated jack object to the caller.
* @initial_kctl: if true, create a kcontrol and add it to the jack list.
* @phantom_jack: Don't create a input device for phantom jacks.
*
* Creates a new jack object.
*
@ -114,9 +200,10 @@ static int snd_jack_dev_register(struct snd_device *device)
* On success @jjack will be initialised.
*/
int snd_jack_new(struct snd_card *card, const char *id, int type,
struct snd_jack **jjack)
struct snd_jack **jjack, bool initial_kctl, bool phantom_jack)
{
struct snd_jack *jack;
struct snd_jack_kctl *jack_kctl = NULL;
int err;
int i;
static struct snd_device_ops ops = {
@ -125,31 +212,47 @@ int snd_jack_new(struct snd_card *card, const char *id, int type,
.dev_disconnect = snd_jack_dev_disconnect,
};
if (initial_kctl) {
jack_kctl = snd_jack_kctl_new(card, id, type);
if (!jack_kctl)
return -ENOMEM;
}
jack = kzalloc(sizeof(struct snd_jack), GFP_KERNEL);
if (jack == NULL)
return -ENOMEM;
jack->id = kstrdup(id, GFP_KERNEL);
jack->input_dev = input_allocate_device();
if (jack->input_dev == NULL) {
err = -ENOMEM;
goto fail_input;
/* don't creat input device for phantom jack */
if (!phantom_jack) {
jack->input_dev = input_allocate_device();
if (jack->input_dev == NULL) {
err = -ENOMEM;
goto fail_input;
}
jack->input_dev->phys = "ALSA";
jack->type = type;
for (i = 0; i < SND_JACK_SWITCH_TYPES; i++)
if (type & (1 << i))
input_set_capability(jack->input_dev, EV_SW,
jack_switch_types[i]);
}
jack->input_dev->phys = "ALSA";
jack->type = type;
for (i = 0; i < SND_JACK_SWITCH_TYPES; i++)
if (type & (1 << i))
input_set_capability(jack->input_dev, EV_SW,
jack_switch_types[i]);
err = snd_device_new(card, SNDRV_DEV_JACK, jack, &ops);
if (err < 0)
goto fail_input;
jack->card = card;
INIT_LIST_HEAD(&jack->kctl_list);
if (initial_kctl)
snd_jack_kctl_add(jack, jack_kctl);
*jjack = jack;
return 0;
@ -230,6 +333,7 @@ EXPORT_SYMBOL(snd_jack_set_key);
*/
void snd_jack_report(struct snd_jack *jack, int status)
{
struct snd_jack_kctl *jack_kctl;
int i;
if (!jack)
@ -252,6 +356,11 @@ void snd_jack_report(struct snd_jack *jack, int status)
}
input_sync(jack->input_dev);
list_for_each_entry(jack_kctl, &jack->kctl_list, list)
snd_kctl_jack_report(jack->card, jack_kctl->kctl,
status & jack_kctl->mask_bits);
}
EXPORT_SYMBOL(snd_jack_report);

2
sound/pci/hda/Kconfig
View File

@ -4,7 +4,7 @@ config SND_HDA
tristate
select SND_PCM
select SND_VMASTER
select SND_KCTL_JACK
select SND_JACK
select SND_HDA_CORE
config SND_HDA_INTEL

90
sound/pci/hda/hda_jack.c
View File

@ -132,11 +132,11 @@ void snd_hda_jack_tbl_clear(struct hda_codec *codec)
for (i = 0; i < codec->jacktbl.used; i++, jack++) {
struct hda_jack_callback *cb, *next;
#ifdef CONFIG_SND_HDA_INPUT_JACK
/* free jack instances manually when clearing/reconfiguring */
if (!codec->bus->shutdown && jack->jack)
snd_device_free(codec->card, jack->jack);
#endif
for (cb = jack->callback; cb; cb = next) {
next = cb->next;
kfree(cb);
@ -337,20 +337,15 @@ void snd_hda_jack_report_sync(struct hda_codec *codec)
jack = codec->jacktbl.list;
for (i = 0; i < codec->jacktbl.used; i++, jack++)
if (jack->nid) {
if (!jack->kctl || jack->block_report)
if (!jack->jack || jack->block_report)
continue;
state = get_jack_plug_state(jack->pin_sense);
snd_kctl_jack_report(codec->card, jack->kctl, state);
#ifdef CONFIG_SND_HDA_INPUT_JACK
if (jack->jack)
snd_jack_report(jack->jack,
state ? jack->type : 0);
#endif
snd_jack_report(jack->jack,
state ? jack->type : 0);
}
}
EXPORT_SYMBOL_GPL(snd_hda_jack_report_sync);
#ifdef CONFIG_SND_HDA_INPUT_JACK
/* guess the jack type from the pin-config */
static int get_input_jack_type(struct hda_codec *codec, hda_nid_t nid)
{
@ -377,54 +372,42 @@ static void hda_free_jack_priv(struct snd_jack *jack)
jacks->nid = 0;
jacks->jack = NULL;
}
#endif
/**
* snd_hda_jack_add_kctl - Add a kctl for the given pin
* @codec: the HDA codec
* @nid: pin NID to assign
* @name: string name for the jack
* @idx: index number for the jack
* @phantom_jack: flag to deal as a phantom jack
*
* This assigns a jack-detection kctl to the given pin. The kcontrol
* will have the given name and index.
*/
static int __snd_hda_jack_add_kctl(struct hda_codec *codec, hda_nid_t nid,
const char *name, int idx, bool phantom_jack)
const char *name, bool phantom_jack)
{
struct hda_jack_tbl *jack;
struct snd_kcontrol *kctl;
int err, state;
int err, state, type;
jack = snd_hda_jack_tbl_new(codec, nid);
if (!jack)
return 0;
if (jack->kctl)
if (jack->jack)
return 0; /* already created */
kctl = snd_kctl_jack_new(name, idx, codec);
if (!kctl)
return -ENOMEM;
err = snd_hda_ctl_add(codec, nid, kctl);
type = get_input_jack_type(codec, nid);
err = snd_jack_new(codec->card, name, type,
&jack->jack, true, phantom_jack);
if (err < 0)
return err;
jack->kctl = kctl;
jack->phantom_jack = !!phantom_jack;
jack->phantom_jack = !!phantom_jack;
jack->type = type;
jack->jack->private_data = jack;
jack->jack->private_free = hda_free_jack_priv;
state = snd_hda_jack_detect(codec, nid);
snd_kctl_jack_report(codec->card, kctl, state);
#ifdef CONFIG_SND_HDA_INPUT_JACK
if (!phantom_jack) {
jack->type = get_input_jack_type(codec, nid);
err = snd_jack_new(codec->card, name, jack->type,
&jack->jack);
if (err < 0)
return err;
jack->jack->private_data = jack;
jack->jack->private_free = hda_free_jack_priv;
snd_jack_report(jack->jack, state ? jack->type : 0);
}
#endif
snd_jack_report(jack->jack, state ? jack->type : 0);
return 0;
}
@ -433,44 +416,23 @@ static int __snd_hda_jack_add_kctl(struct hda_codec *codec, hda_nid_t nid,
* @codec: the HDA codec
* @nid: pin NID
* @name: the name string for the jack ctl
* @idx: the ctl index for the jack ctl
*
* This is a simple helper calling __snd_hda_jack_add_kctl().
*/
int snd_hda_jack_add_kctl(struct hda_codec *codec, hda_nid_t nid,
const char *name, int idx)
const char *name)
{
return __snd_hda_jack_add_kctl(codec, nid, name, idx, false);
return __snd_hda_jack_add_kctl(codec, nid, name, false);
}
EXPORT_SYMBOL_GPL(snd_hda_jack_add_kctl);
/* get the unique index number for the given kctl name */
static int get_unique_index(struct hda_codec *codec, const char *name, int idx)
{
struct hda_jack_tbl *jack;
int i, len = strlen(name);
again:
jack = codec->jacktbl.list;
for (i = 0; i < codec->jacktbl.used; i++, jack++) {
/* jack->kctl.id contains "XXX Jack" name string with index */
if (jack->kctl &&
!strncmp(name, jack->kctl->id.name, len) &&
!strcmp(" Jack", jack->kctl->id.name + len) &&
jack->kctl->id.index == idx) {
idx++;
goto again;
}
}
return idx;
}
static int add_jack_kctl(struct hda_codec *codec, hda_nid_t nid,
const struct auto_pin_cfg *cfg,
const char *base_name)
{
unsigned int def_conf, conn;
char name[SNDRV_CTL_ELEM_ID_NAME_MAXLEN];
int idx, err;
int err;
bool phantom_jack;
if (!nid)
@ -482,16 +444,14 @@ static int add_jack_kctl(struct hda_codec *codec, hda_nid_t nid,
phantom_jack = (conn != AC_JACK_PORT_COMPLEX) ||
!is_jack_detectable(codec, nid);
if (base_name) {
if (base_name)
strlcpy(name, base_name, sizeof(name));
idx = 0;
} else
snd_hda_get_pin_label(codec, nid, cfg, name, sizeof(name), &idx);
else
snd_hda_get_pin_label(codec, nid, cfg, name, sizeof(name), NULL);
if (phantom_jack)
/* Example final name: "Internal Mic Phantom Jack" */
strncat(name, " Phantom", sizeof(name) - strlen(name) - 1);
idx = get_unique_index(codec, name, idx);
err = __snd_hda_jack_add_kctl(codec, nid, name, idx, phantom_jack);
err = __snd_hda_jack_add_kctl(codec, nid, name, phantom_jack);
if (err < 0)
return err;

5
sound/pci/hda/hda_jack.h
View File

@ -39,11 +39,8 @@ struct hda_jack_tbl {
unsigned int block_report:1; /* in a transitional state - do not report to userspace */
hda_nid_t gating_jack; /* valid when gating jack plugged */
hda_nid_t gated_jack; /* gated is dependent on this jack */
struct snd_kcontrol *kctl; /* assigned kctl for jack-detection */
#ifdef CONFIG_SND_HDA_INPUT_JACK
int type;
struct snd_jack *jack;
#endif
};
struct hda_jack_tbl *
@ -85,7 +82,7 @@ static inline bool snd_hda_jack_detect(struct hda_codec *codec, hda_nid_t nid)
bool is_jack_detectable(struct hda_codec *codec, hda_nid_t nid);
int snd_hda_jack_add_kctl(struct hda_codec *codec, hda_nid_t nid,
const char *name, int idx);
const char *name);
int snd_hda_jack_add_kctls(struct hda_codec *codec,
const struct auto_pin_cfg *cfg);

2
sound/pci/hda/patch_hdmi.c
View File

@ -2081,7 +2081,7 @@ static int generic_hdmi_build_jack(struct hda_codec *codec, int pin_idx)
strncat(hdmi_str, " Phantom",
sizeof(hdmi_str) - strlen(hdmi_str) - 1);
return snd_hda_jack_add_kctl(codec, per_pin->pin_nid, hdmi_str, 0);
return snd_hda_jack_add_kctl(codec, per_pin->pin_nid, hdmi_str);
}
static int generic_hdmi_build_controls(struct hda_codec *codec)

2
sound/pci/oxygen/xonar_wm87x6.c
View File

@ -286,7 +286,7 @@ static void xonar_ds_init(struct oxygen *chip)
xonar_enable_output(chip);
snd_jack_new(chip->card, "Headphone",
SND_JACK_HEADPHONE, &data->hp_jack);
SND_JACK_HEADPHONE, &data->hp_jack, false, false);
xonar_ds_handle_hp_jack(chip);
snd_component_add(chip->card, "WM8776");

3
sound/soc/soc-jack.c
View File

@ -48,7 +48,7 @@ int snd_soc_card_jack_new(struct snd_soc_card *card, const char *id, int type,
INIT_LIST_HEAD(&jack->jack_zones);
BLOCKING_INIT_NOTIFIER_HEAD(&jack->notifier);
ret = snd_jack_new(card->snd_card, id, type, &jack->jack);
ret = snd_jack_new(card->snd_card, id, type, &jack->jack, false, false);
if (ret)
return ret;
@ -197,6 +197,7 @@ int snd_soc_jack_add_pins(struct snd_soc_jack *jack, int count,
INIT_LIST_HEAD(&pins[i].list);
list_add(&(pins[i].list), &jack->pins);
snd_jack_add_new_kctl(jack->jack, pins[i].pin, pins[i].mask);
}
/* Update to reflect the last reported status; canned jack