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topology: Define new type and section name to configure physical links

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Users may not use DPCM but still need to configure the physical links.
So we should not only consider backend links for DPCM.

- SND_TPLG_TYPE_LINK is defined to configure physical links by C API.
  And SND_TPLG_TYPE_BE is still supported to configure Backend links for
  DPCM cases.

- SectionLink can be used to configure physical links in text conf file.
  And SectionBE is still supported to config Backend links for DPCM cases.

Actually, users can use SND_TPLG_TYPE_LINK and SectionLink to configure
backend links for DPCM cases, because BE links are also physical links.
The parsing is same and we rename the function from tplg_parse_be to
tplg_parse_link.

Signed-off-by: Mengdong Lin <mengdong.lin@linux.intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Mengdong Lin 2016-11-06 13:13:36 +08:00 • committed by Takashi Iwai
parent cb9451b8e7
commit f5b275b24c
4 changed files with 29 additions and 10 deletions
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19
include/topology.h
View file

@ -617,6 +617,24 @@ extern "C" {
* }
* </pre>
*
* <h4>Physical DAI Link Configurations</h4>
* The runtime configurations of a physical DAI link can be defined by
* SectionLink. <br> Backend DAI links belong to physical links, and can
* be configured by either SectionLink or SectionBE, with same syntax.
* But SectionBE is deprecated atm since the internal processing is
* actually same.
*
* <pre>
* SectionLink."name" {
*
* index "1" # Index number
*
* id "0" # used for binding to the link
*
* data "name" # optional private data
* }
* </pre>
*
* <h4>Manifest Private Data</h4>
* Manfiest may have private data. Users need to define a manifest section
* and add the references to 1 or multiple data sections. Please refer to
@ -687,6 +705,7 @@ enum snd_tplg_type {
SND_TPLG_TYPE_MANIFEST, /*!< Topology manifest */
SND_TPLG_TYPE_TOKEN, /*!< Vendor tokens */
SND_TPLG_TYPE_TUPLE, /*!< Vendor tuples */
SND_TPLG_TYPE_LINK, /*!< Physical DAI link */
};
/**

5
src/topology/parser.c
View file

@ -133,8 +133,9 @@ static int tplg_parse_config(snd_tplg_t *tplg, snd_config_t *cfg)
continue;
}
if (strcmp(id, "SectionBE") == 0) {
err = tplg_parse_compound(tplg, n, tplg_parse_be,
if (strcmp(id, "SectionLink") == 0
|| strcmp(id, "SectionBE") == 0) {
err = tplg_parse_compound(tplg, n, tplg_parse_link,
NULL);
if (err < 0)
return err;

13
src/topology/pcm.c
View file

@ -527,7 +527,8 @@ int tplg_parse_pcm(snd_tplg_t *tplg,
return 0;
}
int tplg_parse_be(snd_tplg_t *tplg,
/* Parse a physical link element in text conf file */
int tplg_parse_link(snd_tplg_t *tplg,
snd_config_t *cfg, void *private ATTRIBUTE_UNUSED)
{
struct snd_soc_tplg_link_config *link;
@ -544,7 +545,7 @@ int tplg_parse_be(snd_tplg_t *tplg,
link = elem->link;
link->size = elem->size;
tplg_dbg(" BE: %s\n", elem->id);
tplg_dbg(" Link: %s\n", elem->id);
snd_config_for_each(i, next, cfg) {
@ -748,7 +749,8 @@ int tplg_add_link_object(snd_tplg_t *tplg, snd_tplg_obj_template_t *t)
struct tplg_elem *elem;
int i;
if (t->type != SND_TPLG_TYPE_BE && t->type != SND_TPLG_TYPE_CC)
if (t->type != SND_TPLG_TYPE_LINK && t->type != SND_TPLG_TYPE_BE
&& t->type != SND_TPLG_TYPE_CC)
return -EINVAL;
/* here type can be either BE or CC. */
@ -756,10 +758,7 @@ int tplg_add_link_object(snd_tplg_t *tplg, snd_tplg_obj_template_t *t)
if (!elem)
return -ENOMEM;
if (t->type == SND_TPLG_TYPE_BE)
tplg_dbg("BE Link: %s", link_tpl->name);
else
tplg_dbg("CC Link: %s", link_tpl->name);
tplg_dbg("Link: %s", link_tpl->name);
link = elem->link;
link->size = elem->size;

2
src/topology/tplg_local.h
View file

@ -220,7 +220,7 @@ int tplg_parse_stream_caps(snd_tplg_t *tplg,
int tplg_parse_pcm(snd_tplg_t *tplg,
snd_config_t *cfg, void *private ATTRIBUTE_UNUSED);
int tplg_parse_be(snd_tplg_t *tplg,
int tplg_parse_link(snd_tplg_t *tplg,
snd_config_t *cfg, void *private ATTRIBUTE_UNUSED);
int tplg_parse_cc(snd_tplg_t *tplg,