Adolfo Reyna
340953b1f6
- Add input-gain-percent property (0..2000, default 100) to everest,es8311 binding - Extend Es8311Config with input_gain_percent, Es8311Data with input_gain float - Implement get_input_gain_multiplier() so audio-stream can apply digital boost on top of HW gain - Change HW gain mapping 100% -> 42dB (was 24dB) to restore +30dB behavior remembered from pre audio-stream driver (ES8311 supports 0/6/12/18/24/30/36/42 per vendor) - Validate percent <=2000 in start_device() - Set ES3C28P (2.8" color) and ES3C35P (3.5" color) DTS to input-gain-percent = <100> (no extra digital, pure HW 42dB max, software volume can lower) - Fixes quiet mic even at 100% and allows tunable digital boost via devicetree for boards with quiet MEMS capsules
ES8311 audio codec
A driver for the ES8311 audio codec by Everest Semiconductor, wired as a dual
in/out AUDIO_CODEC_TYPE device (speaker output + microphone input on the same
chip). The I2C bus is the device's parent; the I2S controller carrying audio data
is referenced via a devicetree phandle.
Wraps Espressif's esp_codec_dev ES8311 implementation.
See https://www.everest-semi.com/pdf/ES8311%20PB.pdf
License: Apache v2.0