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WM8750 audio driver interface

Question asked by udaya kumar on Jul 4, 2018
Latest reply on Jul 10, 2018 by igorpadykov

hi ,


we are using wm8750 audio codec ROUT2 as external speaker in our imx6q custom board, we couldn't able to control the volume through amixer command example: amixer sset Speaker 120


there is no effect in audio, which we hear look same. In default driver out3 is dapm_widget which is ON ,known by (cat /sys/class/sound/card0/device/HiFi/dapm_widget ) command.

Need to access ROUT2 volume in user space, so RIGHT_OUT2 dapm_widget need to be ON. Any suggestion to control ROUT2 volume in user space ? and how to ON  RIGHT_OUT2 dapm_widget ?