<html><body><p> <pre> On Mon, 2024-12-02 at 13:16 +0000, Mark Brown wrote: > On Sun, Dec 01, 2024 at 05:15:45PM +0000, Jiaxin Yu (俞家鑫) wrote: > > > So I want to ask if I can do it by just adding > > SOC_DAPM_PIN_SWITCH("Speakers") and SOC_DAPM_PIN_SWITCH("HDMI")? > > Correspondingly, dapm widget and route path need to be added. That > > is > > "SND_SOC_DAPM_SPK("Speakers", NULL)/ SND_SOC_DAPM_LINE("HDMI1", > > NULL)" > > and "{"Speakers", NULL, "Speaker"}/ {"HDMI1", NULL, "TX"}". > > Yes, that's what I'd expect to see. Dear Mark, So if I open the "HDMI Switch" amixer control, it will call 'hdmi_codec_startup', which in turn calls "audio_startup()" in 'hdmi_codec_ops'. Conversely, if I close it, it will call 'hdmi_codec_shutdown', which in turn calls 'audio_shutdown' in 'hdmi_codec_ops'. Is this understanding correct? static const struct snd_soc_dai_ops hdmi_codec_i2s_dai_ops = { .probe = hdmi_dai_probe, .startup = hdmi_codec_startup, .shutdown = hdmi_codec_shutdown, .hw_params = hdmi_codec_hw_params, .prepare = hdmi_codec_prepare, .set_fmt = hdmi_codec_i2s_set_fmt, .mute_stream = hdmi_codec_mute, .pcm_new = hdmi_codec_pcm_new, .auto_selectable_formats = &hdmi_codec_formats, .num_auto_selectable_formats = 1, }; struct hdmi_codec_ops { /* * Called when ASoC starts an audio stream setup. * Optional */ int (*audio_startup)(struct device *dev, void *data); /* * Shuts down the audio stream. * Mandatory */ void (*audio_shutdown)(struct device *dev, void *data); </pre> </p></body></html><pre>************* MEDIATEK Confidentiality Notice ******************** The information contained in this e-mail message (including any attachments) may be confidential, proprietary, privileged, or otherwise exempt from disclosure under applicable laws. It is intended to be conveyed only to the designated recipient(s). Any use, dissemination, distribution, printing, retaining or copying of this e-mail (including its attachments) by unintended recipient(s) is strictly prohibited and may be unlawful. If you are not an intended recipient of this e-mail, or believe that you have received this e-mail in error, please notify the sender immediately (by replying to this e-mail), delete any and all copies of this e-mail (including any attachments) from your system, and do not disclose the content of this e-mail to any other person. Thank you! </pre>