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author | 2019-10-15 12:59:31 +0900 | |
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committer | 2019-10-23 17:44:24 +0100 | |
commit | 2b544dd7b43b19fb55ea4fbb3e30b60eb20b7828 (patch) | |
tree | 2a16a821a1fcb7b788bcba134bb8c2ee9fca9966 /include/sound | |
parent | ASoC: soc-core: snd_soc_unbind_card() cleanup (diff) | |
download | linux-2b544dd7b43b19fb55ea4fbb3e30b60eb20b7828.tar.gz linux-2b544dd7b43b19fb55ea4fbb3e30b60eb20b7828.tar.bz2 linux-2b544dd7b43b19fb55ea4fbb3e30b60eb20b7828.zip |
ASoC: soc-core: add for_each_rtd_components() and replace
ALSA SoC has for_each_rtdcom() which is link list for
rtd-component which is called as rtdcom. The relationship image is like below
rtdcom rtdcom rtdcom
component component component
rtd->component_list -> list -> list -> list ...
Here, the pointer get via normal link list is rtdcom,
Thus, current for_each loop is like below, and need to get
component via rtdcom->component
for_each_rtdcom(rtd, rtdcom) {
component = rtdcom->component;
...
}
but usually, user want to get pointer from for_each_xxx is component
directly, like below.
for_each_rtd_component(rtd, rtdcom, component) {
...
}
This patch expands list_for_each_entry manually, and enable to get
component directly from for_each macro.
Because of it, the macro becoming difficult to read,
but macro itself becoming useful.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/878spm64m4.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'include/sound')
-rw-r--r-- | include/sound/soc.h | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/include/sound/soc.h b/include/sound/soc.h index d730883626dc..320dcd440dab 100644 --- a/include/sound/soc.h +++ b/include/sound/soc.h @@ -739,8 +739,12 @@ struct snd_soc_rtdcom_list { struct snd_soc_component* snd_soc_rtdcom_lookup(struct snd_soc_pcm_runtime *rtd, const char *driver_name); -#define for_each_rtdcom(rtd, rtdcom) \ - list_for_each_entry(rtdcom, &(rtd)->component_list, list) +#define for_each_rtd_components(rtd, rtdcom, _component) \ + for (rtdcom = list_first_entry(&(rtd)->component_list, \ + typeof(*rtdcom), list); \ + (&rtdcom->list != &(rtd)->component_list) && \ + (_component = rtdcom->component); \ + rtdcom = list_next_entry(rtdcom, list)) struct snd_soc_dai_link_component { const char *name; |