dma_name);
if (!dma->chan) {
dev_err(dev, "can't get dma channel\n");
- return -EIO;
+ goto rsnd_dma_channel_err;
}
ret = dmaengine_slave_config(dma->chan, &cfg);
rsnd_dma_init_err:
rsnd_dma_quit(priv, dma);
+rsnd_dma_channel_err:
- return ret;
+ /*
+ * DMA failed. try to PIO mode
+ * see
+ * rsnd_ssi_fallback()
+ * rsnd_rdai_continuance_probe()
+ */
+ return -EAGAIN;
}
void rsnd_dma_quit(struct rsnd_priv *priv,
({ \
struct rsnd_priv *priv = rsnd_mod_to_priv(mod); \
struct device *dev = rsnd_priv_to_dev(priv); \
- dev_dbg(dev, "%s [%d] %s\n", \
- rsnd_mod_name(mod), rsnd_mod_id(mod), #func); \
- (mod)->ops->func(mod, rdai); \
+ u32 mask = 1 << __rsnd_mod_shift_##func; \
+ u32 call = __rsnd_mod_call_##func << __rsnd_mod_shift_##func; \
+ int ret = 0; \
+ if ((mod->status & mask) == call) { \
+ dev_dbg(dev, "%s[%d] %s\n", \
+ rsnd_mod_name(mod), rsnd_mod_id(mod), #func); \
+ ret = (mod)->ops->func(mod, rdai); \
+ mod->status = (mod->status & ~mask) | (~call & mask); \
+ } \
+ ret; \
})
#define rsnd_mod_call(mod, func, rdai...) \
return 0;
}
+static void rsnd_dai_disconnect(struct rsnd_mod *mod,
+ struct rsnd_dai_stream *io)
+{
+ mod->io = NULL;
+ io->mod[mod->type] = NULL;
+}
+
int rsnd_dai_id(struct rsnd_priv *priv, struct rsnd_dai *rdai)
{
int id = rdai - priv->rdai;
ret; \
})
+#define rsnd_path_break(priv, io, type) \
+{ \
+ struct rsnd_mod *mod; \
+ int id = -1; \
+ \
+ if (rsnd_is_enable_path(io, type)) { \
+ id = rsnd_info_id(priv, io, type); \
+ if (id >= 0) { \
+ mod = rsnd_##type##_mod_get(priv, id); \
+ rsnd_dai_disconnect(mod, io); \
+ } \
+ } \
+}
+
static int rsnd_path_init(struct rsnd_priv *priv,
struct rsnd_dai *rdai,
struct rsnd_dai_stream *io)
.pointer = rsnd_pointer,
};
+/*
+ * snd_kcontrol
+ */
+#define kcontrol_to_cfg(kctrl) ((struct rsnd_kctrl_cfg *)kctrl->private_value)
+static int rsnd_kctrl_info(struct snd_kcontrol *kctrl,
+ struct snd_ctl_elem_info *uinfo)
+{
+ struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl);
+
+ if (cfg->texts) {
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
+ uinfo->count = cfg->size;
+ uinfo->value.enumerated.items = cfg->max;
+ if (uinfo->value.enumerated.item >= cfg->max)
+ uinfo->value.enumerated.item = cfg->max - 1;
+ strlcpy(uinfo->value.enumerated.name,
+ cfg->texts[uinfo->value.enumerated.item],
+ sizeof(uinfo->value.enumerated.name));
+ } else {
+ uinfo->count = cfg->size;
+ uinfo->value.integer.min = 0;
+ uinfo->value.integer.max = cfg->max;
+ uinfo->type = (cfg->max == 1) ?
+ SNDRV_CTL_ELEM_TYPE_BOOLEAN :
+ SNDRV_CTL_ELEM_TYPE_INTEGER;
+ }
+
+ return 0;
+}
+
+static int rsnd_kctrl_get(struct snd_kcontrol *kctrl,
+ struct snd_ctl_elem_value *uc)
+{
+ struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl);
+ int i;
+
+ for (i = 0; i < cfg->size; i++)
+ if (cfg->texts)
+ uc->value.enumerated.item[i] = cfg->val[i];
+ else
+ uc->value.integer.value[i] = cfg->val[i];
+
+ return 0;
+}
+
+static int rsnd_kctrl_put(struct snd_kcontrol *kctrl,
+ struct snd_ctl_elem_value *uc)
+{
+ struct rsnd_mod *mod = snd_kcontrol_chip(kctrl);
+ struct rsnd_kctrl_cfg *cfg = kcontrol_to_cfg(kctrl);
+ int i, change = 0;
+
+ for (i = 0; i < cfg->size; i++) {
+ if (cfg->texts) {
+ change |= (uc->value.enumerated.item[i] != cfg->val[i]);
+ cfg->val[i] = uc->value.enumerated.item[i];
+ } else {
+ change |= (uc->value.integer.value[i] != cfg->val[i]);
+ cfg->val[i] = uc->value.integer.value[i];
+ }
+ }
+
+ if (change)
+ cfg->update(mod);
+
+ return change;
+}
+
+static int __rsnd_kctrl_new(struct rsnd_mod *mod,
+ struct rsnd_dai *rdai,
+ struct snd_soc_pcm_runtime *rtd,
+ const unsigned char *name,
+ struct rsnd_kctrl_cfg *cfg,
+ void (*update)(struct rsnd_mod *mod))
+{
+ struct snd_card *card = rtd->card->snd_card;
+ struct snd_kcontrol *kctrl;
+ struct snd_kcontrol_new knew = {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = name,
+ .info = rsnd_kctrl_info,
+ .get = rsnd_kctrl_get,
+ .put = rsnd_kctrl_put,
+ .private_value = (unsigned long)cfg,
+ };
+ int ret;
+
+ kctrl = snd_ctl_new1(&knew, mod);
+ if (!kctrl)
+ return -ENOMEM;
+
+ ret = snd_ctl_add(card, kctrl);
+ if (ret < 0)
+ return ret;
+
+ cfg->update = update;
+
+ return 0;
+}
+
+int rsnd_kctrl_new_m(struct rsnd_mod *mod,
+ struct rsnd_dai *rdai,
+ struct snd_soc_pcm_runtime *rtd,
+ const unsigned char *name,
+ void (*update)(struct rsnd_mod *mod),
+ struct rsnd_kctrl_cfg_m *_cfg,
+ u32 max)
+{
+ _cfg->cfg.max = max;
+ _cfg->cfg.size = RSND_DVC_CHANNELS;
+ _cfg->cfg.val = _cfg->val;
+ return __rsnd_kctrl_new(mod, rdai, rtd, name, &_cfg->cfg, update);
+}
+
+int rsnd_kctrl_new_s(struct rsnd_mod *mod,
+ struct rsnd_dai *rdai,
+ struct snd_soc_pcm_runtime *rtd,
+ const unsigned char *name,
+ void (*update)(struct rsnd_mod *mod),
+ struct rsnd_kctrl_cfg_s *_cfg,
+ u32 max)
+{
+ _cfg->cfg.max = max;
+ _cfg->cfg.size = 1;
+ _cfg->cfg.val = &_cfg->val;
+ return __rsnd_kctrl_new(mod, rdai, rtd, name, &_cfg->cfg, update);
+}
+
+int rsnd_kctrl_new_e(struct rsnd_mod *mod,
+ struct rsnd_dai *rdai,
+ struct snd_soc_pcm_runtime *rtd,
+ const unsigned char *name,
+ struct rsnd_kctrl_cfg_s *_cfg,
+ void (*update)(struct rsnd_mod *mod),
+ const char * const *texts,
+ u32 max)
+{
+ _cfg->cfg.max = max;
+ _cfg->cfg.size = 1;
+ _cfg->cfg.val = &_cfg->val;
+ _cfg->cfg.texts = texts;
+ return __rsnd_kctrl_new(mod, rdai, rtd, name, &_cfg->cfg, update);
+}
+
/*
* snd_soc_platform
*/
.name = "rsnd",
};
+static int rsnd_rdai_continuance_probe(struct rsnd_priv *priv,
+ struct rsnd_dai *rdai,
+ int is_play)
+{
+ struct rsnd_dai_stream *io = is_play ? &rdai->playback : &rdai->capture;
+ int ret;
+
+ ret = rsnd_dai_call(probe, io, rdai);
+ if (ret == -EAGAIN) {
+ /*
+ * Fallback to PIO mode
+ */
+
+ /*
+ * call "remove" for SSI/SRC/DVC
+ * SSI will be switch to PIO mode if it was DMA mode
+ * see
+ * rsnd_dma_init()
+ * rsnd_ssi_fallback()
+ */
+ rsnd_dai_call(remove, io, rdai);
+
+ /*
+ * remove SRC/DVC from DAI,
+ */
+ rsnd_path_break(priv, io, src);
+ rsnd_path_break(priv, io, dvc);
+
+ /*
+ * fallback
+ */
+ rsnd_dai_call(fallback, io, rdai);
+
+ /*
+ * retry to "probe".
+ * DAI has SSI which is PIO mode only now.
+ */
+ ret = rsnd_dai_call(probe, io, rdai);
+ }
+
+ return ret;
+}
+
/*
* rsnd probe
*/
}
for_each_rsnd_dai(rdai, priv, i) {
- ret = rsnd_dai_call(probe, &rdai->playback, rdai);
+ ret = rsnd_rdai_continuance_probe(priv, rdai, 1);
if (ret)
goto exit_snd_probe;
- ret = rsnd_dai_call(probe, &rdai->capture, rdai);
+ ret = rsnd_rdai_continuance_probe(priv, rdai, 0);
if (ret)
goto exit_snd_probe;
}
projects / cascardo / linux.git / blobdiff