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Add ioctl to reset fanspeed to auto

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This commit is contained in:
Werner Sembach 2021-02-19 21:33:30 +01:00
parent 4306a80513
commit 5b99255be8
3 changed files with 30 additions and 1 deletions
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27
src/tuxedo_io/tongfang_wmi.h
View file

@ -309,7 +309,7 @@ static u32 uw_set_fan(u32 fan_index, u8 fan_speed)
// Check current mode // Check current mode
uw_ec_read_addr(0x51, 0x07, &reg_read_return); uw_ec_read_addr(0x51, 0x07, &reg_read_return);
if (!(reg_read_return.bytes.data_low & 0x40)) { if (!(reg_read_return.bytes.data_low & 0x40)) {
// If not "full fan mode" (ie. 0x40 bit set) switch to it (required for fancontrol) // If not "full fan mode" (i.e. 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); 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 // Attempt to write both fans as quick as possible before complete ramp-up
pr_debug("prevent ramp-up start\n"); pr_debug("prevent ramp-up start\n");
@ -326,3 +326,28 @@ static u32 uw_set_fan(u32 fan_index, u8 fan_speed)
return 0; return 0;
} }
static u32 uw_set_fan_auto()
{
u8 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;
// Check current mode
uw_ec_read_addr(0x51, 0x07, &reg_read_return);
if (reg_read_return.bytes.data_low & 0x40) {
// If "full fan mode" (i.e. 0x40 bit set) switch it off
uw_ec_write_addr(0x51, 0x07, reg_read_return.bytes.data_low & 0xbf, 0x00, &reg_write_return);
// Attempt to write both fans to 100% to restore default "full fan mode"
for (i = 0; i < 10; ++i) {
uw_ec_write_addr(low_reg_fan0, reg_high, 0xc8, 0x00, &reg_write_return);
uw_ec_write_addr(low_reg_fan1, reg_high, 0xc8, 0x00, &reg_write_return);
msleep(10);
}
}
return 0;
}

3
src/tuxedo_io/tuxedo_io.c
View file

@ -229,6 +229,9 @@ static long uniwill_ioctl_interface(struct file *file, unsigned int cmd, unsigne
uw_ec_write_addr(0x41, 0x07, argument & 0x01, 0x00, &reg_write_return); uw_ec_write_addr(0x41, 0x07, argument & 0x01, 0x00, &reg_write_return);
*/ */
break; break;
case W_UW_FANAUTO:
uw_set_fan_auto();
break;
#ifdef DEBUG #ifdef DEBUG
case W_TF_BC: case W_TF_BC:
copy_result = copy_from_user(&uw_arg, (void *) arg, sizeof(uw_arg)); copy_result = copy_from_user(&uw_arg, (void *) arg, sizeof(uw_arg));

1
src/tuxedo_io/tuxedo_io_ioctl.h
View file

@ -83,5 +83,6 @@
#define W_UW_FANSPEED2 _IOW(MAGIC_WRITE_UW, 0x11, int32_t*) #define W_UW_FANSPEED2 _IOW(MAGIC_WRITE_UW, 0x11, int32_t*)
#define W_UW_MODE _IOW(MAGIC_WRITE_UW, 0x12, int32_t*) #define W_UW_MODE _IOW(MAGIC_WRITE_UW, 0x12, int32_t*)
#define W_UW_MODE_ENABLE _IOW(MAGIC_WRITE_UW, 0x13, int32_t*) #define W_UW_MODE_ENABLE _IOW(MAGIC_WRITE_UW, 0x13, int32_t*)
#define W_UW_FANAUTO _IOW(MAGIC_WRITE_UW, 0x14) // undo all previous calls of W_UW_FANSPEED and W_UW_FANSPEED2
#endif #endif