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authorKuninori Morimoto <kuninori.morimoto.gx@renesas.com>2019-10-15 12:59:31 +0900
committerMark Brown <broonie@kernel.org>2019-10-23 17:44:24 +0100
commit2b544dd7b43b19fb55ea4fbb3e30b60eb20b7828 (patch)
tree2a16a821a1fcb7b788bcba134bb8c2ee9fca9966 /include/sound
parent5a4c9f054ceeaa90caef033f5a52eca2d7975364 (diff)
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.h8
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;