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WM8731: Store headphone volume for mute() function.

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So when unmuted, previous volume can be restored.
This commit is contained in:
Jared Boone 2017-05-31 11:32:32 -07:00
parent f6e1e78e8a
commit 8f5555b052
1 changed files with 2 additions and 0 deletions
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2
firmware/common/wm8731.hpp
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@ -307,6 +307,7 @@ public:
void set_headphone_volume(const volume_t volume) { void set_headphone_volume(const volume_t volume) {
const auto normalized = headphone_gain_range.normalize(volume); const auto normalized = headphone_gain_range.normalize(volume);
headphone_volume = volume;
auto n = normalized.centibel() / 10; auto n = normalized.centibel() / 10;
write(LeftHeadphoneOut { write(LeftHeadphoneOut {
@ -337,6 +338,7 @@ private:
I2C& bus; I2C& bus;
const I2C::address_t bus_address; const I2C::address_t bus_address;
RegisterMap map { default_after_reset }; RegisterMap map { default_after_reset };
volume_t headphone_volume = -60.0_dB;
bool write(const Register reg); bool write(const Register reg);