int smu7_fan_ctrl_get_fan_speed_percent(struct pp_hwmgr *hwmgr,
uint32_t *speed)
{
uint32_t duty100;
uint32_t duty;
uint64_t tmp64;
if (hwmgr->thermal_controller.fanInfo.bNoFan)
return -ENODEV;
duty100 = PHM_READ_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC,
CG_FDO_CTRL1, FMAX_DUTY100);
duty = PHM_READ_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC,
CG_THERMAL_STATUS, FDO_PWM_DUTY);
if (duty100 == 0)
return -EINVAL;
tmp64 = (uint64_t)duty * 100;
do_div(tmp64, duty100);
*speed = (uint32_t)tmp64;
if (*speed > 100)
*speed = 100;
return 0;
}
/**
* Set Fan Speed Control to static mode, so that the user can decide what speed to use.
* @param hwmgr the address of the powerplay hardware manager.
* mode the fan control mode, 0 default, 1 by percent, 5, by RPM
* @exception Should always succeed.
*/
int iceland_fan_ctrl_set_static_mode(struct pp_hwmgr *hwmgr, uint32_t mode)
{
if (hwmgr->fan_ctrl_is_in_default_mode) {
hwmgr->fan_ctrl_default_mode = PHM_READ_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC, CG_FDO_CTRL2, FDO_PWM_MODE);
hwmgr->tmin = PHM_READ_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC, CG_FDO_CTRL2, TMIN);
hwmgr->fan_ctrl_is_in_default_mode = false;
}
PHM_WRITE_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC, CG_FDO_CTRL2, TMIN, 0);
PHM_WRITE_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC, CG_FDO_CTRL2, FDO_PWM_MODE, mode);
return 0;
}
/**
* Set Fan Speed in percent.
* @param hwmgr the address of the powerplay hardware manager.
* @param speed is the percentage value (0% - 100%) to be set.
* @exception Fails is the 100% setting appears to be 0.
*/
int smu7_fan_ctrl_set_fan_speed_percent(struct pp_hwmgr *hwmgr,
uint32_t speed)
{
uint32_t duty100;
uint32_t duty;
uint64_t tmp64;
if (hwmgr->thermal_controller.fanInfo.bNoFan)
return 0;
if (speed > 100)
speed = 100;
if (PP_CAP(PHM_PlatformCaps_MicrocodeFanControl))
smu7_fan_ctrl_stop_smc_fan_control(hwmgr);
duty100 = PHM_READ_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC,
CG_FDO_CTRL1, FMAX_DUTY100);
if (duty100 == 0)
return -EINVAL;
tmp64 = (uint64_t)speed * duty100;
do_div(tmp64, 100);
duty = (uint32_t)tmp64;
PHM_WRITE_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC,
CG_FDO_CTRL0, FDO_STATIC_DUTY, duty);
return smu7_fan_ctrl_set_static_mode(hwmgr, FDO_PWM_MODE_STATIC);
}
/**
* Set Fan Speed in percent.
* @param hwmgr the address of the powerplay hardware manager.
* @param speed is the percentage value (0% - 100%) to be set.
* @exception Fails is the 100% setting appears to be 0.
*/
int iceland_fan_ctrl_set_fan_speed_percent(struct pp_hwmgr *hwmgr, uint32_t speed)
{
uint32_t duty100;
uint32_t duty;
uint64_t tmp64;
if (hwmgr->thermal_controller.fanInfo.bNoFan)
return -EINVAL;
if (speed > 100) {
pr_warning("Cannot set more than 100%% duty cycle. Set it to 100.\n");
speed = 100;
}
if (phm_cap_enabled(hwmgr->platform_descriptor.platformCaps, PHM_PlatformCaps_MicrocodeFanControl))
iceland_fan_ctrl_stop_smc_fan_control(hwmgr);
duty100 = PHM_READ_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC, CG_FDO_CTRL1, FMAX_DUTY100);
if (0 == duty100)
return -EINVAL;
tmp64 = (uint64_t)speed * duty100;
do_div(tmp64, 100);
duty = (uint32_t)tmp64;
PHM_WRITE_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC, CG_FDO_CTRL0, FDO_STATIC_DUTY, duty);
return iceland_fan_ctrl_set_static_mode(hwmgr, FDO_PWM_MODE_STATIC);
}
/**
* Disable thermal alerts on the RV770 thermal controller.
* @param hwmgr The address of the hardware manager.
*/
static int iceland_thermal_disable_alert(struct pp_hwmgr *hwmgr)
{
uint32_t alert;
alert = PHM_READ_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC, CG_THERMAL_INT, THERM_INT_MASK);
alert |= (ICELAND_THERMAL_HIGH_ALERT_MASK | ICELAND_THERMAL_LOW_ALERT_MASK);
PHM_WRITE_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC, CG_THERMAL_INT, THERM_INT_MASK, alert);
/* send message to SMU to disable internal thermal interrupts */
return (smum_send_msg_to_smc(hwmgr->smumgr, PPSMC_MSG_Thermal_Cntl_Disable) == 0) ? 0 : -1;
}
/**
* Enable thermal alerts on the RV770 thermal controller.
*
* @param hwmgr The address of the hardware manager.
*/
static void smu7_thermal_enable_alert(struct pp_hwmgr *hwmgr)
{
uint32_t alert;
alert = PHM_READ_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC,
CG_THERMAL_INT, THERM_INT_MASK);
alert &= ~(SMU7_THERMAL_HIGH_ALERT_MASK | SMU7_THERMAL_LOW_ALERT_MASK);
PHM_WRITE_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC,
CG_THERMAL_INT, THERM_INT_MASK, alert);
/* send message to SMU to enable internal thermal interrupts */
smum_send_msg_to_smc(hwmgr, PPSMC_MSG_Thermal_Cntl_Enable);
}
/**
* Reads the remote temperature from the SIslands thermal controller.
*
* @param hwmgr The address of the hardware manager.
*/
int smu7_thermal_get_temperature(struct pp_hwmgr *hwmgr)
{
int temp;
temp = PHM_READ_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC,
CG_MULT_THERMAL_STATUS, CTF_TEMP);
/* Bit 9 means the reading is lower than the lowest usable value. */
if (temp & 0x200)
temp = SMU7_THERMAL_MAXIMUM_TEMP_READING;
else
temp = temp & 0x1ff;
temp *= PP_TEMPERATURE_UNITS_PER_CENTIGRADES;
return temp;
}
int smu7_fan_ctrl_get_fan_speed_rpm(struct pp_hwmgr *hwmgr, uint32_t *speed)
{
uint32_t tach_period;
uint32_t crystal_clock_freq;
if (hwmgr->thermal_controller.fanInfo.bNoFan ||
!hwmgr->thermal_controller.fanInfo.ucTachometerPulsesPerRevolution)
return -ENODEV;
tach_period = PHM_READ_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC,
CG_TACH_STATUS, TACH_PERIOD);
if (tach_period == 0)
return -EINVAL;
crystal_clock_freq = smu7_get_xclk(hwmgr);
*speed = 60 * crystal_clock_freq * 10000 / tach_period;
return 0;
}
/**
* Set up the fan table to control the fan using the SMC.
* @param hwmgr the address of the powerplay hardware manager.
* @param pInput the pointer to input data
* @param pOutput the pointer to output data
* @param pStorage the pointer to temporary storage
* @param Result the last failure code
* @return result from set temperature range routine
*/
int tf_polaris10_thermal_setup_fan_table(struct pp_hwmgr *hwmgr,
void *input, void *output, void *storage, int result)
{
struct polaris10_hwmgr *data = (struct polaris10_hwmgr *)(hwmgr->backend);
SMU74_Discrete_FanTable fan_table = { FDO_MODE_HARDWARE };
uint32_t duty100;
uint32_t t_diff1, t_diff2, pwm_diff1, pwm_diff2;
uint16_t fdo_min, slope1, slope2;
uint32_t reference_clock;
int res;
uint64_t tmp64;
if (data->fan_table_start == 0) {
phm_cap_unset(hwmgr->platform_descriptor.platformCaps,
PHM_PlatformCaps_MicrocodeFanControl);
return 0;
}
duty100 = PHM_READ_VFPF_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC,
CG_FDO_CTRL1, FMAX_DUTY100);
if (duty100 == 0) {
phm_cap_unset(hwmgr->platform_descriptor.platformCaps,
PHM_PlatformCaps_MicrocodeFanControl);
return 0;
}
tmp64 = hwmgr->thermal_controller.advanceFanControlParameters.
usPWMMin * duty100;
do_div(tmp64, 10000);
fdo_min = (uint16_t)tmp64;
t_diff1 = hwmgr->thermal_controller.advanceFanControlParameters.usTMed -
hwmgr->thermal_controller.advanceFanControlParameters.usTMin;
t_diff2 = hwmgr->thermal_controller.advanceFanControlParameters.usTHigh -
hwmgr->thermal_controller.advanceFanControlParameters.usTMed;
pwm_diff1 = hwmgr->thermal_controller.advanceFanControlParameters.usPWMMed -
hwmgr->thermal_controller.advanceFanControlParameters.usPWMMin;
pwm_diff2 = hwmgr->thermal_controller.advanceFanControlParameters.usPWMHigh -
hwmgr->thermal_controller.advanceFanControlParameters.usPWMMed;
slope1 = (uint16_t)((50 + ((16 * duty100 * pwm_diff1) / t_diff1)) / 100);
slope2 = (uint16_t)((50 + ((16 * duty100 * pwm_diff2) / t_diff2)) / 100);
fan_table.TempMin = cpu_to_be16((50 + hwmgr->
thermal_controller.advanceFanControlParameters.usTMin) / 100);
fan_table.TempMed = cpu_to_be16((50 + hwmgr->
thermal_controller.advanceFanControlParameters.usTMed) / 100);
fan_table.TempMax = cpu_to_be16((50 + hwmgr->
thermal_controller.advanceFanControlParameters.usTMax) / 100);
fan_table.Slope1 = cpu_to_be16(slope1);
fan_table.Slope2 = cpu_to_be16(slope2);
fan_table.FdoMin = cpu_to_be16(fdo_min);
fan_table.HystDown = cpu_to_be16(hwmgr->
thermal_controller.advanceFanControlParameters.ucTHyst);
fan_table.HystUp = cpu_to_be16(1);
fan_table.HystSlope = cpu_to_be16(1);
fan_table.TempRespLim = cpu_to_be16(5);
reference_clock = tonga_get_xclk(hwmgr);
fan_table.RefreshPeriod = cpu_to_be32((hwmgr->
thermal_controller.advanceFanControlParameters.ulCycleDelay *
reference_clock) / 1600);
fan_table.FdoMax = cpu_to_be16((uint16_t)duty100);
fan_table.TempSrc = (uint8_t)PHM_READ_VFPF_INDIRECT_FIELD(
hwmgr->device, CGS_IND_REG__SMC,
CG_MULT_THERMAL_CTRL, TEMP_SEL);
res = polaris10_copy_bytes_to_smc(hwmgr->smumgr, data->fan_table_start,
(uint8_t *)&fan_table, (uint32_t)sizeof(fan_table),
data->sram_end);
if (!res && hwmgr->thermal_controller.
advanceFanControlParameters.ucMinimumPWMLimit)
res = smum_send_msg_to_smc_with_parameter(hwmgr->smumgr,
PPSMC_MSG_SetFanMinPwm,
hwmgr->thermal_controller.
advanceFanControlParameters.ucMinimumPWMLimit);
if (!res && hwmgr->thermal_controller.
advanceFanControlParameters.ulMinFanSCLKAcousticLimit)
res = smum_send_msg_to_smc_with_parameter(hwmgr->smumgr,
PPSMC_MSG_SetFanSclkTarget,
hwmgr->thermal_controller.
advanceFanControlParameters.ulMinFanSCLKAcousticLimit);
if (res)
phm_cap_unset(hwmgr->platform_descriptor.platformCaps,
PHM_PlatformCaps_MicrocodeFanControl);
return 0;
}
