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drm/radeon: bind fan control on CI cards to hwmon interface (v2)

Browse source 
This adds a possibility to control fan on CI parts
via exported hwmon variables. Note that automatic
ucode fan management pauses if you choose to enable
manual fan control.  Use with caution!

v2: agd5f: fix formatting, squash in:

    minor fix for pwm1_enable exposed value

    Track smc control in addition to fan mode
    This fixes pwm1_enable being constantly set
    to 1 because of enabled smc control

also handle the case where smc fan control is disabled.

Signed-off-by: Oleg Chernovskiy <algonkvel@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Oleg Chernovskiy 2014-12-08 00:10:46 +03:00 committed by Alex Deucher
parent 99736703a9
commit 36689e5750
4 changed files with 55 additions and 10 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

53
drivers/gpu/drm/radeon/ci_dpm.c
View file

@ -187,6 +187,9 @@ static int ci_update_uvd_dpm(struct radeon_device *rdev, bool gate);
static PPSMC_Result ci_send_msg_to_smc_with_parameter(struct radeon_device *rdev,
PPSMC_Msg msg, u32 parameter);
static void ci_thermal_start_smc_fan_control(struct radeon_device *rdev);
static void ci_fan_ctrl_set_default_mode(struct radeon_device *rdev);
static struct ci_power_info *ci_get_pi(struct radeon_device *rdev)
{
struct ci_power_info *pi = rdev->pm.dpm.priv;
@ -1043,22 +1046,24 @@ static int ci_fan_ctrl_start_smc_fan_control(struct radeon_device *rdev)
return -EINVAL;
}
pi->fan_is_controlled_by_smc = true;
return 0;
}
#if 0
static int ci_fan_ctrl_stop_smc_fan_control(struct radeon_device *rdev)
{
PPSMC_Result ret;
struct ci_power_info *pi = ci_get_pi(rdev);
ret = ci_send_msg_to_smc(rdev, PPSMC_StopFanControl);
if (ret == PPSMC_Result_OK)
if (ret == PPSMC_Result_OK) {
pi->fan_is_controlled_by_smc = false;
return 0;
else
} else
return -EINVAL;
}
static int ci_fan_ctrl_get_fan_speed_percent(struct radeon_device *rdev,
int ci_fan_ctrl_get_fan_speed_percent(struct radeon_device *rdev,
u32 *speed)
{
u32 duty, duty100;
@ -1083,21 +1088,22 @@ static int ci_fan_ctrl_get_fan_speed_percent(struct radeon_device *rdev,
return 0;
}
static int ci_fan_ctrl_set_fan_speed_percent(struct radeon_device *rdev,
int ci_fan_ctrl_set_fan_speed_percent(struct radeon_device *rdev,
u32 speed)
{
u32 tmp;
u32 duty, duty100;
u64 tmp64;
struct ci_power_info *pi = ci_get_pi(rdev);
if (rdev->pm.no_fan)
return -ENOENT;
if (speed > 100)
if (pi->fan_is_controlled_by_smc)
return -EINVAL;
if (rdev->pm.dpm.fan.ucode_fan_control)
ci_fan_ctrl_stop_smc_fan_control(rdev);
if (speed > 100)
return -EINVAL;
duty100 = (RREG32_SMC(CG_FDO_CTRL1) & FMAX_DUTY100_MASK) >> FMAX_DUTY100_SHIFT;
@ -1112,11 +1118,38 @@ static int ci_fan_ctrl_set_fan_speed_percent(struct radeon_device *rdev,
tmp |= FDO_STATIC_DUTY(duty);
WREG32_SMC(CG_FDO_CTRL0, tmp);
ci_fan_ctrl_set_static_mode(rdev, FDO_PWM_MODE_STATIC);
return 0;
}
void ci_fan_ctrl_set_mode(struct radeon_device *rdev, u32 mode)
{
if (mode) {
/* stop auto-manage */
if (rdev->pm.dpm.fan.ucode_fan_control)
ci_fan_ctrl_stop_smc_fan_control(rdev);
ci_fan_ctrl_set_static_mode(rdev, mode);
} else {
/* restart auto-manage */
if (rdev->pm.dpm.fan.ucode_fan_control)
ci_thermal_start_smc_fan_control(rdev);
else
ci_fan_ctrl_set_default_mode(rdev);
}
}
u32 ci_fan_ctrl_get_mode(struct radeon_device *rdev)
{
struct ci_power_info *pi = ci_get_pi(rdev);
u32 tmp;
if (pi->fan_is_controlled_by_smc)
return 0;
tmp = RREG32_SMC(CG_FDO_CTRL2) & FDO_PWM_MODE_MASK;
return (tmp >> FDO_PWM_MODE_SHIFT);
}
#if 0
static int ci_fan_ctrl_get_fan_speed_rpm(struct radeon_device *rdev,
u32 *speed)
{

1
drivers/gpu/drm/radeon/ci_dpm.h
View file

@ -291,6 +291,7 @@ struct ci_power_info {
struct ci_ps requested_ps;
/* fan control */
bool fan_ctrl_is_in_default_mode;
bool fan_is_controlled_by_smc;
u32 t_min;
u32 fan_ctrl_default_mode;
};

4
drivers/gpu/drm/radeon/radeon_asic.c
View file

@ -2118,6 +2118,10 @@ static struct radeon_asic ci_asic = {
.force_performance_level = &ci_dpm_force_performance_level,
.vblank_too_short = &ci_dpm_vblank_too_short,
.powergate_uvd = &ci_dpm_powergate_uvd,
.fan_ctrl_set_mode = &ci_fan_ctrl_set_mode,
.fan_ctrl_get_mode = &ci_fan_ctrl_get_mode,
.get_fan_speed_percent = &ci_fan_ctrl_get_fan_speed_percent,
.set_fan_speed_percent = &ci_fan_ctrl_set_fan_speed_percent,
},
.pflip = {
.page_flip = &evergreen_page_flip,

7
drivers/gpu/drm/radeon/radeon_asic.h
View file

@ -861,6 +861,13 @@ int ci_dpm_force_performance_level(struct radeon_device *rdev,
bool ci_dpm_vblank_too_short(struct radeon_device *rdev);
void ci_dpm_powergate_uvd(struct radeon_device *rdev, bool gate);
int ci_fan_ctrl_get_fan_speed_percent(struct radeon_device *rdev,
u32 *speed);
int ci_fan_ctrl_set_fan_speed_percent(struct radeon_device *rdev,
u32 speed);
u32 ci_fan_ctrl_get_mode(struct radeon_device *rdev);
void ci_fan_ctrl_set_mode(struct radeon_device *rdev, u32 mode);
int kv_dpm_init(struct radeon_device *rdev);
int kv_dpm_enable(struct radeon_device *rdev);
int kv_dpm_late_enable(struct radeon_device *rdev);