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ASoC: Make aux_dev more like a generic component 

aux_dev is mainly used by the machine driver to specify analog devices,
which are registered as codecs. Making it more like a generic component
can help the machine driver to use it to specify any component with
topology info by name.

Details:
- Remove the stub 'rtd_aux' array from the soc card.
- Add a list 'aux_comp_list' to store the components of aux_devs.
  And add a list head 'list_aux' to struct snd_soc_component, for adding
  such components to the above list.
- Add a 'init' ops to a component for machine specific init.
  soc_bind_aux_dev() will set it to be aux_dev's init. And it will be
  called when probing the component.
- soc_bind_aux_dev() will also search components by name of an aux_dev,
  since it may not be a codec.
- Move probing of aux_devs before checking new DAI links brought by
  topology.
- Move removal of aux_devs later than removal of links. Because topology
  of aux components may register DAIs and the DAI drivers will go with
  removal of the aux components, we want soc_remove_link_dais() to remove
  the DAIs at first.

Signed-off-by: Mengdong Lin <mengdong.lin@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Mengdong Lin 2016-01-06 13:29:31 +08:00 committed by Mark Brown
parent 68003e6cf2
commit f2ed6b0764
2 changed files with 88 additions and 76 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
include/sound/soc.h
View File

@ -787,6 +787,7 @@ struct snd_soc_component {
unsigned int registered_as_component:1;
struct list_head list;
struct list_head list_aux; /* for auxiliary component of the card */
struct snd_soc_dai_driver *dai_drv;
int num_dai;
@ -830,6 +831,9 @@ struct snd_soc_component {
int (*probe)(struct snd_soc_component *);
void (*remove)(struct snd_soc_component *);
/* machine specific init */
int (*init)(struct snd_soc_component *component);
#ifdef CONFIG_DEBUG_FS
void (*init_debugfs)(struct snd_soc_component *component);
const char *debugfs_prefix;
@ -1130,8 +1134,7 @@ struct snd_soc_card {
*/
struct snd_soc_aux_dev *aux_dev;
int num_aux_devs;
struct snd_soc_pcm_runtime *rtd_aux;
int num_aux_rtd;
struct list_head aux_comp_list;
const struct snd_kcontrol_new *controls;
int num_controls;
@ -1537,6 +1540,7 @@ static inline void snd_soc_initialize_card_lists(struct snd_soc_card *card)
INIT_LIST_HEAD(&card->widgets);
INIT_LIST_HEAD(&card->paths);
INIT_LIST_HEAD(&card->dapm_list);
INIT_LIST_HEAD(&card->aux_comp_list);
}
static inline bool snd_soc_volsw_is_stereo(struct soc_mixer_control *mc)

154
sound/soc/soc-core.c
View File

@ -1413,6 +1413,16 @@ static int soc_probe_component(struct snd_soc_card *card,
component->name);
}
/* machine specific init */
if (component->init) {
ret = component->init(component);
if (ret < 0) {
dev_err(component->dev,
"Failed to do machine specific init %d\n", ret);
goto err_probe;
}
}
if (component->controls)
snd_soc_add_component_controls(component, component->controls,
component->num_controls);
@ -1657,65 +1667,81 @@ static int soc_probe_link_dais(struct snd_soc_card *card,
static int soc_bind_aux_dev(struct snd_soc_card *card, int num)
{
struct snd_soc_pcm_runtime *rtd = &card->rtd_aux[num];
struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
const char *name = aux_dev->codec_name;
struct snd_soc_component *component;
const char *name;
struct device_node *codec_of_node;
rtd->component = soc_find_component(aux_dev->codec_of_node, name);
if (!rtd->component) {
if (aux_dev->codec_of_node)
name = of_node_full_name(aux_dev->codec_of_node);
dev_err(card->dev, "ASoC: %s not registered\n", name);
return -EPROBE_DEFER;
if (aux_dev->codec_of_node || aux_dev->codec_name) {
/* codecs, usually analog devices */
name = aux_dev->codec_name;
codec_of_node = aux_dev->codec_of_node;
component = soc_find_component(codec_of_node, name);
if (!component) {
if (codec_of_node)
name = of_node_full_name(codec_of_node);
goto err_defer;
}
} else if (aux_dev->name) {
/* generic components */
name = aux_dev->name;
component = soc_find_component(NULL, name);
if (!component)
goto err_defer;
} else {
dev_err(card->dev, "ASoC: Invalid auxiliary device\n");
return -EINVAL;
}
/*
* Some places still reference rtd->codec, so we have to keep that
* initialized if the component is a CODEC. Once all those references
* have been removed, this code can be removed as well.
*/
rtd->codec = rtd->component->codec;
component->init = aux_dev->init;
list_add(&component->list_aux, &card->aux_comp_list);
return 0;
err_defer:
dev_err(card->dev, "ASoC: %s not registered\n", name);
return -EPROBE_DEFER;
}
static int soc_probe_aux_devices(struct snd_soc_card *card)
{
struct snd_soc_component *comp;
int order;
int ret;
for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
order++) {
list_for_each_entry(comp, &card->aux_comp_list, list_aux) {
if (comp->driver->probe_order == order) {
ret = soc_probe_component(card, comp);
if (ret < 0) {
dev_err(card->dev,
"ASoC: failed to probe aux component %s %d\n",
comp->name, ret);
return ret;
}
}
}
}
return 0;
}
static int soc_probe_aux_dev(struct snd_soc_card *card, int num)
static void soc_remove_aux_devices(struct snd_soc_card *card)
{
struct snd_soc_pcm_runtime *rtd = &card->rtd_aux[num];
struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
int ret;
struct snd_soc_component *comp, *_comp;
int order;
ret = soc_probe_component(card, rtd->component);
if (ret < 0)
return ret;
/* do machine specific initialization */
if (aux_dev->init) {
ret = aux_dev->init(rtd->component);
if (ret < 0) {
dev_err(card->dev, "ASoC: failed to init %s: %d\n",
aux_dev->name, ret);
return ret;
for (order = SND_SOC_COMP_ORDER_FIRST; order <= SND_SOC_COMP_ORDER_LAST;
order++) {
list_for_each_entry_safe(comp, _comp,
&card->aux_comp_list, list_aux) {
if (comp->driver->remove_order == order) {
soc_remove_component(comp);
/* remove it from the card's aux_comp_list */
list_del(&comp->list_aux);
}
}
return soc_post_component_init(rtd, aux_dev->name);
}
static void soc_remove_aux_dev(struct snd_soc_card *card, int num)
{
struct snd_soc_pcm_runtime *rtd = &card->rtd_aux[num];
struct snd_soc_component *component = rtd->component;
/* unregister the rtd device */
if (rtd->dev_registered) {
device_unregister(rtd->dev);
rtd->dev_registered = 0;
}
if (component)
soc_remove_component(component);
}
static int snd_soc_init_codec_cache(struct snd_soc_codec *codec)
@ -1894,6 +1920,11 @@ static int snd_soc_instantiate_card(struct snd_soc_card *card)
}
}
/* probe auxiliary components */
ret = soc_probe_aux_devices(card);
if (ret < 0)
goto probe_dai_err;
/* Find new DAI links added during probing components and bind them.
* Components with topology may bring new DAIs and DAI links.
*/
@ -1923,16 +1954,6 @@ static int snd_soc_instantiate_card(struct snd_soc_card *card)
}
}
for (i = 0; i < card->num_aux_devs; i++) {
ret = soc_probe_aux_dev(card, i);
if (ret < 0) {
dev_err(card->dev,
"ASoC: failed to add auxiliary devices %d\n",
ret);
goto probe_aux_dev_err;
}
}
snd_soc_dapm_link_dai_widgets(card);
snd_soc_dapm_connect_dai_link_widgets(card);
@ -1992,8 +2013,7 @@ static int snd_soc_instantiate_card(struct snd_soc_card *card)
return 0;
probe_aux_dev_err:
for (i = 0; i < card->num_aux_devs; i++)
soc_remove_aux_dev(card, i);
soc_remove_aux_devices(card);
probe_dai_err:
soc_remove_dai_links(card);
@ -2039,20 +2059,18 @@ static int soc_probe(struct platform_device *pdev)
static int soc_cleanup_card_resources(struct snd_soc_card *card)
{
struct snd_soc_pcm_runtime *rtd;
int i;
/* make sure any delayed work runs */
list_for_each_entry(rtd, &card->rtd_list, list)
flush_delayed_work(&rtd->delayed_work);
/* remove auxiliary devices */
for (i = 0; i < card->num_aux_devs; i++)
soc_remove_aux_dev(card, i);
/* remove and free each DAI */
soc_remove_dai_links(card);
soc_remove_pcm_runtimes(card);
/* remove auxiliary devices */
soc_remove_aux_devices(card);
soc_cleanup_card_debugfs(card);
/* remove the card */
@ -2608,16 +2626,6 @@ int snd_soc_register_card(struct snd_soc_card *card)
INIT_LIST_HEAD(&card->rtd_list);
card->num_rtd = 0;
card->rtd_aux = devm_kzalloc(card->dev,
sizeof(struct snd_soc_pcm_runtime) *
card->num_aux_devs,
GFP_KERNEL);
if (card->rtd_aux == NULL)
return -ENOMEM;
for (i = 0; i < card->num_aux_devs; i++)
card->rtd_aux[i].card = card;
INIT_LIST_HEAD(&card->dapm_dirty);
INIT_LIST_HEAD(&card->dobj_list);
card->instantiated = 0;