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ASoC: soc-core: add for_each_rtd_components() and replace

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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>
This commit is contained in:
Kuninori Morimoto
2019-10-15 12:59:31 +09:00
committed by Mark Brown
parent 5a4c9f054c
commit 2b544dd7b4
5 changed files with 54 additions and 120 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
include/sound/soc.h
View File

@@ -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;