/*
* Set up External Temperature to read via thermal diode/resistor
* into TMPINx register
*/
static void it8772f_enable_tmpin(struct resource *res, int tmpin,
enum thermal_mode mode)
{
u8 reg;
if (tmpin != 1 && tmpin != 2)
return;
reg = it8772f_envc_read(res, IT8772F_ADC_TEMP_CHANNEL_ENABLE);
switch (mode) {
case THERMAL_DIODE:
/* Thermal Diode Mode */
it8772f_envc_write(res, IT8772F_ADC_TEMP_CHANNEL_ENABLE,
reg | tmpin);
break;
case THERMAL_RESISTOR:
/* Thermal Resistor Mode */
it8772f_envc_write(res, IT8772F_ADC_TEMP_CHANNEL_ENABLE,
reg | (tmpin << 3));
break;
default:
printk(BIOS_ERR, "Unsupported thermal mode 0x%x on TMPIN%d\n",
mode, tmpin);
return;
}
reg = it8772f_envc_read(res, IT8772F_CONFIGURATION);
/* Enable the startup of monitoring operation */
it8772f_envc_write(res, IT8772F_CONFIGURATION, reg | 0x01);
}
static void it8772f_extemp_force_idle_status(struct resource *res)
{
u8 reg;
int retries = 10;
/* Wait up to 10ms for non-busy state. */
while (retries > 0) {
reg = it8772f_envc_read(res, IT8772F_EXTEMP_STATUS);
if ((reg & IT8772F_EXTEMP_STATUS_HOST_BUSY) == 0x0)
break;
retries--;
mdelay(1);
}
if (retries == 0 && (reg & IT8772F_EXTEMP_STATUS_HOST_BUSY) == 0x1) {
/*
* SIO is busy due to unfinished peci transaction.
* Re-configure Register 0x8E to terminate processes.
*/
it8772f_envc_write(res, IT8772F_EXTEMP_CONTROL,
IT8772F_EXTEMP_CONTROL_AUTO_4HZ |
IT8772F_EXTEMP_CONTROL_AUTO_START);
}
}
/*
* Setup External Temperature to read via PECI into TMPINx register
*/
static void it8772f_enable_peci(struct resource *res, int tmpin)
{
if (tmpin < 1 || tmpin > 3)
return;
/* Enable PECI interface */
it8772f_envc_write(res, IT8772F_INTERFACE_SELECT,
IT8772F_INTERFACE_SEL_PECI |
IT8772F_INTERFACE_SPEED_TOLERANCE);
/* Setup External Temperature using PECI GetTemp */
it8772f_envc_write(res, IT8772F_EXTEMP_ADDRESS,
PECI_CLIENT_ADDRESS);
it8772f_envc_write(res, IT8772F_EXTEMP_COMMAND,
PECI_GETTEMP_COMMAND);
it8772f_envc_write(res, IT8772F_EXTEMP_WRITE_LENGTH,
PECI_GETTEMP_WRITE_LENGTH);
it8772f_envc_write(res, IT8772F_EXTEMP_READ_LENGTH,
PECI_GETTEMP_READ_LENGTH);
it8772f_envc_write(res, IT8772F_EXTEMP_CONTROL,
IT8772F_EXTEMP_CONTROL_AUTO_4HZ |
IT8772F_EXTEMP_CONTROL_AUTO_START);
/* External Temperature reported in TMPINx register */
it8772f_envc_write(res, IT8772F_ADC_TEMP_CHANNEL_ENABLE,
(tmpin & 3) << 6);
}
/*
* Setup a FAN PWM interface for software control
*/
static void it8772f_enable_fan(struct resource *res, int fan, u8 fan_speed)
{
u8 reg;
if (fan < 1 || fan > 3)
return;
/* Enable 6MHz (23.43kHz PWM) active high output */
reg = it8772f_envc_read(res, IT8772F_FAN_CTL_MODE);
reg |= IT8772F_FAN_CTL_ON(fan) |
IT8772F_FAN_PWM_CLOCK_6MHZ |
IT8772F_FAN_CTL_POLARITY_HIGH;
it8772f_envc_write(res, IT8772F_FAN_CTL_MODE, reg);
/* Enable output in smart mode */
reg = it8772f_envc_read(res, IT8772F_FAN_MAIN_CTL);
reg |= IT8772F_FAN_MAIN_CTL_TAC_SMART(fan);
reg |= IT8772F_FAN_MAIN_CTL_TAC_EN(fan);
it8772f_envc_write(res, IT8772F_FAN_MAIN_CTL, reg);
switch (fan) {
case 2:
/* Enable software operation */
it8772f_envc_write(res, IT8772F_FAN_CTL2_PWM_MODE,
IT8772F_FAN_CTL_PWM_MODE_SOFTWARE);
/* Disable Smoothing */
it8772f_envc_write(res, IT8772F_FAN_CTL2_AUTO_MODE,
IT8772F_FAN_CTL_AUTO_SMOOTHING_DIS);
/* Set a default fan speed */
if (fan_speed)
it8772f_envc_write(res, IT8772F_FAN_CTL2_PWM_START,
fan_speed);
break;
case 3:
/* Enable software operation */
it8772f_envc_write(res, IT8772F_FAN_CTL3_PWM_MODE,
IT8772F_FAN_CTL_PWM_MODE_SOFTWARE);
/* Disable Smoothing */
it8772f_envc_write(res, IT8772F_FAN_CTL3_AUTO_MODE,
IT8772F_FAN_CTL_AUTO_SMOOTHING_DIS);
/* Set a default fan speed */
if (fan_speed)
it8772f_envc_write(res, IT8772F_FAN_CTL3_PWM_START,
fan_speed);
break;
}
}
