Current snd_soc_of_get_dai_name() needs .of_xlate_dai_name() callback on each component drivers. But required behavior on almost all these drivers is just returns its indexed dai driver's name.

This patch adds this feature as default behavior. .of_xlate_dai_name() can overwrite it.

Signed-off-by: Kuninori Morimoto kuninori.morimoto.gx@renesas.com --- This is RFC patch. On ML discussed that snd_soc_of_get_dai_name() needs .of_xlate_dai_name to get/exchange device name from device node ID. But, almost all driver's .of_xlate_dai_name will be same implementation. (return name of indexed dai driver) So, this patch adds it as default behavior. .of_xlate_dai_name() can over write it.

This patch is based on mark/topic/component

include/sound/soc.h | 4 +++- sound/soc/soc-core.c | 16 ++++++++++++---- 2 files changed, 15 insertions(+), 5 deletions(-)

diff --git a/include/sound/soc.h b/include/sound/soc.h index 1dd7dc5..ae715ca 100644 --- a/include/sound/soc.h +++ b/include/sound/soc.h @@ -684,10 +684,12 @@ struct snd_soc_component_driver { struct snd_soc_component { const char *name; int id; - int num_dai; struct device *dev; struct list_head list;

+ struct snd_soc_dai_driver *dai_drv; + int num_dai; + const struct snd_soc_component_driver *driver; };

diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index 711bd36..51ea2c3 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -4048,6 +4048,7 @@ __snd_soc_register_component(struct device *dev,

cmpnt->dev = dev; cmpnt->driver = cmpnt_drv; + cmpnt->dai_drv = dai_drv; cmpnt->num_dai = num_dai;

/* @@ -4609,12 +4610,19 @@ int snd_soc_of_get_dai_name(struct device_node *of_node, if (pos->dev->of_node != args.np) continue;

- if (!pos->driver->of_xlate_dai_name) { - ret = -ENOSYS; - break; + if (pos->driver->of_xlate_dai_name) { + ret = pos->driver->of_xlate_dai_name(pos, &args, dai_name); + } else { + int id = args.args[0]; + + if (id < 0 || id >= pos->num_dai) { + ret = -EINVAL; + } else { + *dai_name = pos->dai_drv[id].name; + ret = 0; + } }

- ret = pos->driver->of_xlate_dai_name(pos, &args, dai_name); break; } mutex_unlock(&client_mutex);