Peter Wurmsdobler wrote: > ... > Another control is called pmic_control_op_sw (.name = "Master Output > Playback Volume") and appears in amixer as "Master Output" (in fact it > is not a volume control but a switch). Then I'd guess its name should be "Master Playback Switch". See Documentation/sound/alsa/ControlNames.txt. > What is the ioctl request code for a particular snd_kcontrol_new_t > defined in the driver? ALSA controls do not have separate ioctl codes. Controls are identified by their name (or by their ID, which is a number that ALSA assigns automatically). There is one ioctl request that writes the value of a control and which gets the control ID as parameter. > Alternatively, how does the OSS layer in ALSA map the different ALSA > controls to the predefined and fixed OSS controls? The OSS API has some predefined mixer controls that are identifed by a number or ioctl request. By default, ALSA maps these OSS controls to certain ALSA control names; see section "Mixer Elements" in Documentation/sound/alsa/OSS-Emulation.txt. HTH Clemens _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
