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tuxedo_io: Attempt workaround to reduce uw fan ramp-up

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This commit is contained in:
Christoffer Sandberg 2020-12-21 13:38:31 +01:00
parent e61ea200a3
commit 1611244de9
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GPG key ID: BF563F71B6C7A96D
2 changed files with 39 additions and 18 deletions
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37
src/tuxedo_io/tongfang_wmi.h
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@ -289,3 +289,40 @@ static void uniwill_exit(void)
// Disable manual mode
uw_ec_write_addr(0x41, 0x07, 0x00, 0x00, &reg_write_return);
}
static u32 uw_set_fan(u32 fan_index, u8 fan_speed)
{
u8 reg_low, reg_high = 0x18;
u32 i;
union uw_ec_read_return reg_read_return;
union uw_ec_write_return reg_write_return;
u8 low_reg_fan0 = 0x04;
u8 low_reg_fan1 = 0x09;
if (fan_index == 0)
reg_low = low_reg_fan0;
else if (fan_index == 1)
reg_low = low_reg_fan1;
else
return -EINVAL;
// 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);
// 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) {
uw_ec_write_addr(low_reg_fan0, reg_high, fan_speed & 0xff, 0x00, &reg_write_return);
uw_ec_write_addr(low_reg_fan1, reg_high, fan_speed & 0xff, 0x00, &reg_write_return);
msleep(10);
}
pr_debug("prevent ramp-up done\n");
} else {
// Otherwise just set the chosen fan
uw_ec_write_addr(reg_low, reg_high, fan_speed & 0xff, 0x00, &reg_write_return);
}
return 0;
}

20
src/tuxedo_io/tuxedo_io.c
View file

@ -211,28 +211,12 @@ static long uniwill_ioctl_interface(struct file *file, unsigned int cmd, unsigne
case W_UW_FANSPEED:
// Get fan speed argument
copy_result = copy_from_user(&argument, (int32_t *) arg, sizeof(argument));
// 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);
}
// Set speed
uw_ec_write_addr(0x04, 0x18, argument & 0xff, 0x00, &reg_write_return);
uw_set_fan(0, argument);
break;
case W_UW_FANSPEED2:
// Get fan speed argument
copy_result = copy_from_user(&argument, (int32_t *) arg, sizeof(argument));
// 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);
}
// Set speed
uw_ec_write_addr(0x09, 0x18, argument & 0xff, 0x00, &reg_write_return);
uw_set_fan(1, argument);
break;
case W_UW_MODE:
copy_result = copy_from_user(&argument, (int32_t *) arg, sizeof(argument));