Stephen Warren wrote at Friday, February 11, 2011 9:06 AM: > > Mark Brown wrote at Friday, February 11, 2011 4:12 AM: > > ... > > As well as being detected via the main interrupt of the WM8903 the > > detection signals can also be brought out to the WM8903 GPIOs directly, > > allowing detection to operate without any I2C I/O. That mode can be > > configured via platform data only and the WM8903 microphone detection > > functions will never be called so the user needs to be able to enable > > detection via platform data. > > Probably the best thing is to disable, then immediately re-enable the > relevant fields (micdet_ena) in the register during wm8903_mic_detect. > That will turn off the HW mic detection module, then start detection > afresh, hence causing the "initial" interrupt to fire when desired. Strangely, modifying wm8903_mic_detect() to: * Unconditionally clear MICDET_ENA * Update the IRQ mask like it does today * Re-enable MICDET_ENA if det||shrt Doesn't actually solve the problem. I guess disabling MICDET_ENA doesn't actually reset the mic detection state machine. Anyway, as you said, perhaps just documenting how to set up micdet_cfg in the platform_data header is indeed the best way, since everything works without any code changes if I simply don't set MICDET_ENA in micdet_cfg. -- nvpublic -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
