Hello, The following series at the end will let the twl4030 codec to use BIAS_OFF instead of BIAS_STANDBY. The difference in power consumption is about 0.5mA. To achieve this: - The regcache has been reseted to codec default - The codec initialization has been optimized, it is no longer writes all 73 registers at startup, but only modifies few selected one. - The power related code has been cleaned up, and optimized - Support added for machine drivers to select the offset cancellation path - debug support for checking the codec default registers (machine drivers can ask for checking, but shall be disabled in production). I guess that's it. The driver has been tested on a custom board with twl5031. It passed all of our internal test cases covering much of the codec features. --- Peter Ujfalusi (7): ASoC: TWL4030: Revisit codec defaults ASoC: TWL4030: Remove wrapper for power down ASoC: TWL4030: Make offset cancellation path configurable ASoC: TWL4030: Optimize the power up sequence ASoC: TWL4030: Helper to check chip default registers ASoC: TWL4030: Correct the ARXR2_APGA_CTL chip default ASoC: TWL4030: Use BIAS_OFF instead of BIAS_STANDBY, when not in use sound/soc/codecs/twl4030.c | 286 ++++++++++++++++++++++++-------------------- sound/soc/codecs/twl4030.h | 2 + 2 files changed, 157 insertions(+), 131 deletions(-) _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
