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-rw-r--r--sound/soc/soc-link.c227
1 files changed, 227 insertions, 0 deletions
diff --git a/sound/soc/soc-link.c b/sound/soc/soc-link.c
new file mode 100644
index 000000000..619664cc9
--- /dev/null
+++ b/sound/soc/soc-link.c
@@ -0,0 +1,227 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// soc-link.c
+//
+// Copyright (C) 2019 Renesas Electronics Corp.
+// Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
+//
+#include <sound/soc.h>
+#include <sound/soc-link.h>
+
+#define soc_link_ret(rtd, ret) _soc_link_ret(rtd, __func__, ret)
+static inline int _soc_link_ret(struct snd_soc_pcm_runtime *rtd,
+ const char *func, int ret)
+{
+ /* Positive, Zero values are not errors */
+ if (ret >= 0)
+ return ret;
+
+ /* Negative values might be errors */
+ switch (ret) {
+ case -EPROBE_DEFER:
+ case -ENOTSUPP:
+ break;
+ default:
+ dev_err(rtd->dev,
+ "ASoC: error at %s on %s: %d\n",
+ func, rtd->dai_link->name, ret);
+ }
+
+ return ret;
+}
+
+/*
+ * We might want to check substream by using list.
+ * In such case, we can update these macros.
+ */
+#define soc_link_mark_push(rtd, substream, tgt) ((rtd)->mark_##tgt = substream)
+#define soc_link_mark_pop(rtd, substream, tgt) ((rtd)->mark_##tgt = NULL)
+#define soc_link_mark_match(rtd, substream, tgt) ((rtd)->mark_##tgt == substream)
+
+int snd_soc_link_init(struct snd_soc_pcm_runtime *rtd)
+{
+ int ret = 0;
+
+ if (rtd->dai_link->init)
+ ret = rtd->dai_link->init(rtd);
+
+ return soc_link_ret(rtd, ret);
+}
+
+void snd_soc_link_exit(struct snd_soc_pcm_runtime *rtd)
+{
+ if (rtd->dai_link->exit)
+ rtd->dai_link->exit(rtd);
+}
+
+int snd_soc_link_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
+ struct snd_pcm_hw_params *params)
+{
+ int ret = 0;
+
+ if (rtd->dai_link->be_hw_params_fixup)
+ ret = rtd->dai_link->be_hw_params_fixup(rtd, params);
+
+ return soc_link_ret(rtd, ret);
+}
+
+int snd_soc_link_startup(struct snd_pcm_substream *substream)
+{
+ struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+ int ret = 0;
+
+ if (rtd->dai_link->ops &&
+ rtd->dai_link->ops->startup)
+ ret = rtd->dai_link->ops->startup(substream);
+
+ /* mark substream if succeeded */
+ if (ret == 0)
+ soc_link_mark_push(rtd, substream, startup);
+
+ return soc_link_ret(rtd, ret);
+}
+
+void snd_soc_link_shutdown(struct snd_pcm_substream *substream,
+ int rollback)
+{
+ struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+
+ if (rollback && !soc_link_mark_match(rtd, substream, startup))
+ return;
+
+ if (rtd->dai_link->ops &&
+ rtd->dai_link->ops->shutdown)
+ rtd->dai_link->ops->shutdown(substream);
+
+ /* remove marked substream */
+ soc_link_mark_pop(rtd, substream, startup);
+}
+
+int snd_soc_link_prepare(struct snd_pcm_substream *substream)
+{
+ struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+ int ret = 0;
+
+ if (rtd->dai_link->ops &&
+ rtd->dai_link->ops->prepare)
+ ret = rtd->dai_link->ops->prepare(substream);
+
+ return soc_link_ret(rtd, ret);
+}
+
+int snd_soc_link_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+ int ret = 0;
+
+ if (rtd->dai_link->ops &&
+ rtd->dai_link->ops->hw_params)
+ ret = rtd->dai_link->ops->hw_params(substream, params);
+
+ /* mark substream if succeeded */
+ if (ret == 0)
+ soc_link_mark_push(rtd, substream, hw_params);
+
+ return soc_link_ret(rtd, ret);
+}
+
+void snd_soc_link_hw_free(struct snd_pcm_substream *substream, int rollback)
+{
+ struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+
+ if (rollback && !soc_link_mark_match(rtd, substream, hw_params))
+ return;
+
+ if (rtd->dai_link->ops &&
+ rtd->dai_link->ops->hw_free)
+ rtd->dai_link->ops->hw_free(substream);
+
+ /* remove marked substream */
+ soc_link_mark_pop(rtd, substream, hw_params);
+}
+
+static int soc_link_trigger(struct snd_pcm_substream *substream, int cmd)
+{
+ struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+ int ret = 0;
+
+ if (rtd->dai_link->ops &&
+ rtd->dai_link->ops->trigger)
+ ret = rtd->dai_link->ops->trigger(substream, cmd);
+
+ return soc_link_ret(rtd, ret);
+}
+
+int snd_soc_link_trigger(struct snd_pcm_substream *substream, int cmd,
+ int rollback)
+{
+ struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+ int ret = 0;
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ case SNDRV_PCM_TRIGGER_RESUME:
+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ ret = soc_link_trigger(substream, cmd);
+ if (ret < 0)
+ break;
+ soc_link_mark_push(rtd, substream, trigger);
+ break;
+ case SNDRV_PCM_TRIGGER_STOP:
+ case SNDRV_PCM_TRIGGER_SUSPEND:
+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+ if (rollback && !soc_link_mark_match(rtd, substream, trigger))
+ break;
+
+ ret = soc_link_trigger(substream, cmd);
+ soc_link_mark_pop(rtd, substream, startup);
+ }
+
+ return ret;
+}
+
+int snd_soc_link_compr_startup(struct snd_compr_stream *cstream)
+{
+ struct snd_soc_pcm_runtime *rtd = cstream->private_data;
+ int ret = 0;
+
+ if (rtd->dai_link->compr_ops &&
+ rtd->dai_link->compr_ops->startup)
+ ret = rtd->dai_link->compr_ops->startup(cstream);
+
+ if (ret == 0)
+ soc_link_mark_push(rtd, cstream, compr_startup);
+
+ return soc_link_ret(rtd, ret);
+}
+EXPORT_SYMBOL_GPL(snd_soc_link_compr_startup);
+
+void snd_soc_link_compr_shutdown(struct snd_compr_stream *cstream,
+ int rollback)
+{
+ struct snd_soc_pcm_runtime *rtd = cstream->private_data;
+
+ if (rollback && !soc_link_mark_match(rtd, cstream, compr_startup))
+ return;
+
+ if (rtd->dai_link->compr_ops &&
+ rtd->dai_link->compr_ops->shutdown)
+ rtd->dai_link->compr_ops->shutdown(cstream);
+
+ soc_link_mark_pop(rtd, cstream, compr_startup);
+}
+EXPORT_SYMBOL_GPL(snd_soc_link_compr_shutdown);
+
+int snd_soc_link_compr_set_params(struct snd_compr_stream *cstream)
+{
+ struct snd_soc_pcm_runtime *rtd = cstream->private_data;
+ int ret = 0;
+
+ if (rtd->dai_link->compr_ops &&
+ rtd->dai_link->compr_ops->set_params)
+ ret = rtd->dai_link->compr_ops->set_params(cstream);
+
+ return soc_link_ret(rtd, ret);
+}
+EXPORT_SYMBOL_GPL(snd_soc_link_compr_set_params);