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authorKuninori Morimoto <kuninori.morimoto.gx@renesas.com>2019-07-26 13:52:00 +0900
committerMark Brown <broonie@kernel.org>2019-08-05 16:25:59 +0100
commit9c712e4f57229081e837d593fc1e4183b068a41c (patch)
tree997e89089cbc1a986b3ba8a310192f68b35503e1 /sound/soc/soc-component.c
parent82d81f5cced36e480b581ae51c595e2deb9f2d56 (diff)
downloadlinux-9c712e4f57229081e837d593fc1e4183b068a41c.tar.bz2
ASoC: soc-component: add snd_soc_pcm_component_page()
Current ALSA SoC is directly using component->driver->ops->xxx, thus, the code nested deeply, and it makes code difficult to read, and is not good for encapsulation. We want to implement component related function at soc-component.c, but, some of them need to care whole snd_soc_pcm_runtime (= rtd) connected component. Let's call component related function which need to care with for_each_rtdcom() loop as snd_soc_pcm_component_xxx(). This patch adds new snd_soc_pcm_component_page() and use it. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Link: https://lore.kernel.org/r/87o91h4d06.wl-kuninori.morimoto.gx@renesas.com Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/soc-component.c')
-rw-r--r--sound/soc/soc-component.c23
1 files changed, 23 insertions, 0 deletions
diff --git a/sound/soc/soc-component.c b/sound/soc/soc-component.c
index 20897dce1bec..d503bc9b0850 100644
--- a/sound/soc/soc-component.c
+++ b/sound/soc/soc-component.c
@@ -483,3 +483,26 @@ int snd_soc_pcm_component_copy_user(struct snd_pcm_substream *substream,
return -EINVAL;
}
+
+struct page *snd_soc_pcm_component_page(struct snd_pcm_substream *substream,
+ unsigned long offset)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_rtdcom_list *rtdcom;
+ struct snd_soc_component *component;
+ struct page *page;
+
+ for_each_rtdcom(rtd, rtdcom) {
+ component = rtdcom->component;
+
+ /* FIXME. it returns 1st page now */
+ if (component->driver->ops &&
+ component->driver->ops->page) {
+ page = component->driver->ops->page(substream, offset);
+ if (page)
+ return page;
+ }
+ }
+
+ return NULL;
+}