On 07/16/2016 08:58 PM, Takashi Sakamoto wrote:
Current implementation of ALSA SoC part in kernel has no call corresponding to sys_ioctl(SNDRV_CTL_IOCTL_ELEM_ADD) or something like that, thus I recommend you to drop this line by an additional patch: http://git.alsa-project.org/?p=alsa-lib.git;a=blob;f=src/topology/ctl.c;h=b948ac021ceecc116bc1087075743243e4b14055;hb=HEAD#l44
Thanks for your suggestions. But this tool is not for directly adding controls from the user space.
It's for ADSP firmware vendors to describe the controls/widgets/pcms for a specific version of firmware. Previously, these components are hard coded in ASoC platforms drivers and not so convenient to share a common driver for different firmwares. The topology binary generated by this tool will be loaded by ASoC platform driver with a specific firmware binary, and so ASoC will create the controls/widgets/pcms that match the firmware automatically.
Thanks Mengdong _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
