Hi! Sebastian, would you have pointer to original Motorola sources you used for inspiration? > > With setup like that, how does userland tell kernel that the baseband > > <-> microphone/speaker connection should be activated? > > Audio routing should be done as normal, and ideally the driver for the > modem will be able to figure out if there's an active call or not. If > userspace has to enable the input and output manually then you can set > up SOC_DAPM_PIN_SWITCH()es as normal. Modem talks AT commands, so the driver is in userspace for now. I tried SOC_DAPM_PIN_SWITCH(), but it results in alsamixer oopsing, I guess I'm doing something wrong. Message from syslogd@devuan at Jun 12 13:51:31 ... kernel:[ 743.678588] BUG: spinlock bad magic on CPU#1, alsamixer/2217 Message from syslogd@devuan at Jun 12 13:51:31 ... kernel:[ 743.684417] lock: 0xede423a0, .magic: eee2a6a4, .owner: <none>/-1, .owner_cpu: -287136604 I'm trying to understand how it is supposed to work, but https://www.alsa-project.org/main/index.php/DAPM has TODO's at critical places. If there's better source of information, let me know. Best regards, Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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