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authorLiam Girdwood2018-07-02 16:59:54 +0100
committerMark Brown2018-07-03 16:38:29 +0100
commita655de808cbde6c58b3298e704d786b53f59fb5d (patch)
treef096c0994bbebf6ea7fbdc1660bf09949ccb38dd /include/sound
parent2bd368d7bf21028f37a123041a138922254d4840 (diff)
ASoC: core: Allow topology to override machine driver FE DAI link config.
Machine drivers statically define a number of DAI links that currently cannot be changed or removed by topology. This means PCMs and platform components cannot be changed by topology at runtime AND machine drivers are tightly coupled to topology. This patch allows topology to override the machine driver DAI link config in order to reuse machine drivers with different topologies and platform components. The patch supports :- 1) create new FE PCMs with a topology defined PCM ID. 2) destroy existing static FE PCMs 3) change the platform component driver. 4) assign any new HW params fixups. 5) assign a new card name prefix to differentiate this topology to userspace. The patch requires no changes to the machine drivers, but does add some platform component flags that the platform component driver can assign before loading topologies. Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'include/sound')
-rw-r--r--include/sound/soc.h13
1 files changed, 13 insertions, 0 deletions
diff --git a/include/sound/soc.h b/include/sound/soc.h
index 16f0bf10cc42..870ba6b64817 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -803,6 +803,14 @@ struct snd_soc_component_driver {
unsigned int use_pmdown_time:1; /* care pmdown_time at stop */
unsigned int endianness:1;
unsigned int non_legacy_dai_naming:1;
+
+ /* this component uses topology and ignore machine driver FEs */
+ const char *ignore_machine;
+ const char *topology_name_prefix;
+ int (*be_hw_params_fixup)(struct snd_soc_pcm_runtime *rtd,
+ struct snd_pcm_hw_params *params);
+ bool use_dai_pcm_id; /* use the DAI link PCM ID as PCM device number */
+ int be_pcm_base; /* base device ID for all BE PCMs */
};
struct snd_soc_component {
@@ -960,6 +968,9 @@ struct snd_soc_dai_link {
/* pmdown_time is ignored at stop */
unsigned int ignore_pmdown_time:1;
+ /* Do not create a PCM for this DAI link (Backend link) */
+ unsigned int ignore:1;
+
struct list_head list; /* DAI link list of the soc card */
struct snd_soc_dobj dobj; /* For topology */
};
@@ -999,6 +1010,7 @@ struct snd_soc_card {
const char *long_name;
const char *driver_name;
char dmi_longname[80];
+ char topology_shortname[32];
struct device *dev;
struct snd_card *snd_card;
@@ -1008,6 +1020,7 @@ struct snd_soc_card {
struct mutex dapm_mutex;
bool instantiated;
+ bool topology_shortname_created;
int (*probe)(struct snd_soc_card *card);
int (*late_probe)(struct snd_soc_card *card);