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Only set one bit required for full-fan-mode and not whole byte

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Werner Sembach 2021-02-19 21:04:08 +01:00
parent 4296f75372
commit 4306a80513
1 changed files with 3 additions and 3 deletions
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6
src/tuxedo_io/tongfang_wmi.h
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@ -308,9 +308,9 @@ static u32 uw_set_fan(u32 fan_index, u8 fan_speed)
// Check current mode
uw_ec_read_addr(0x51, 0x07, &reg_read_return);
if (reg_read_return.bytes.data_low != 0x40) {
// If not "full fan mode" (ie. 0x40) switch to it (required for fancontrol)
uw_ec_write_addr(0x51, 0x07, 0x40, 0x00, &reg_write_return);
if (!(reg_read_return.bytes.data_low & 0x40)) {
// If not "full fan mode" (ie. 0x40 bit set) switch to it (required for fancontrol)
uw_ec_write_addr(0x51, 0x07, reg_read_return.bytes.data_low | 0x40, 0x00, &reg_write_return);
// Attempt to write both fans as quick as possible before complete ramp-up
pr_debug("prevent ramp-up start\n");
for (i = 0; i < 10; ++i) {