We have similar tracking for engine and memory. We could think about some
solution for older GPUs as well, however there are not strict voltage values
set.
Signed-off-by: Rafał Miłecki <zajec5@xxxxxxxxx>
---
drivers/gpu/drm/radeon/evergreen.c | 8 ++++++--
drivers/gpu/drm/radeon/r600.c | 8 ++++++--
drivers/gpu/drm/radeon/radeon.h | 1 +
drivers/gpu/drm/radeon/radeon_pm.c | 2 ++
drivers/gpu/drm/radeon/rv770.c | 8 ++++++--
5 files changed, 21 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c
index 174f718..c444808 100644
--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -46,8 +46,12 @@ void evergreen_pm_misc(struct radeon_device *rdev)
struct radeon_power_state *ps = &rdev->pm.power_state[req_ps_idx];
struct radeon_voltage *voltage = &ps->clock_info[req_cm_idx].voltage;
- if ((voltage->type == VOLTAGE_SW) && voltage->voltage)
- radeon_atom_set_voltage(rdev, voltage->voltage);
+ if (voltage->voltage != rdev->pm.current_vddc) {
+ if ((voltage->type == VOLTAGE_SW) && voltage->voltage) {
+ radeon_atom_set_voltage(rdev, voltage->voltage);
+ rdev->pm.current_vddc = voltage->voltage;
+ }
+ }
}
void evergreen_pm_prepare(struct radeon_device *rdev)
diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
index 94c27d0..e49bebe 100644
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -480,8 +480,12 @@ void r600_pm_misc(struct radeon_device *rdev)
struct radeon_power_state *ps = &rdev->pm.power_state[req_ps_idx];
struct radeon_voltage *voltage = &ps->clock_info[req_cm_idx].voltage;
- if ((voltage->type == VOLTAGE_SW) && voltage->voltage)
- radeon_atom_set_voltage(rdev, voltage->voltage);
+ if (voltage->voltage != rdev->pm.current_vddc) {
+ if ((voltage->type == VOLTAGE_SW) && voltage->voltage) {
+ radeon_atom_set_voltage(rdev, voltage->voltage);
+ rdev->pm.current_vddc = voltage->voltage;
+ }
+ }
}
bool r600_gui_idle(struct radeon_device *rdev)
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index 084221d..04bc867 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -745,6 +745,7 @@ struct radeon_pm {
int default_power_state_index;
u32 current_sclk;
u32 current_mclk;
+ u32 current_vddc;
struct radeon_i2c_chan *i2c_bus;
/* selected pm method */
enum radeon_pm_method pm_method;
diff --git a/drivers/gpu/drm/radeon/radeon_pm.c b/drivers/gpu/drm/radeon/radeon_pm.c
index 0228126..a046fe7 100644
--- a/drivers/gpu/drm/radeon/radeon_pm.c
+++ b/drivers/gpu/drm/radeon/radeon_pm.c
@@ -381,6 +381,7 @@ void radeon_pm_suspend(struct radeon_device *rdev)
rdev->pm.current_clock_mode_index = -1;
rdev->pm.current_sclk = 0;
rdev->pm.current_mclk = 0;
+ rdev->pm.current_vddc = 0;
mutex_unlock(&rdev->pm.mutex);
}
@@ -400,6 +401,7 @@ int radeon_pm_init(struct radeon_device *rdev)
rdev->pm.dynpm_can_downclock = true;
rdev->pm.current_sclk = 0;
rdev->pm.current_mclk = 0;
+ rdev->pm.current_vddc = 0;
if (rdev->bios) {
if (rdev->is_atom_bios)
diff --git a/drivers/gpu/drm/radeon/rv770.c b/drivers/gpu/drm/radeon/rv770.c
index f002848..f310fa8 100644
--- a/drivers/gpu/drm/radeon/rv770.c
+++ b/drivers/gpu/drm/radeon/rv770.c
@@ -49,8 +49,12 @@ void rv770_pm_misc(struct radeon_device *rdev)
struct radeon_power_state *ps = &rdev->pm.power_state[req_ps_idx];
struct radeon_voltage *voltage = &ps->clock_info[req_cm_idx].voltage;
- if ((voltage->type == VOLTAGE_SW) && voltage->voltage)
- radeon_atom_set_voltage(rdev, voltage->voltage);
+ if (voltage->voltage != rdev->pm.current_vddc) {
+ if ((voltage->type == VOLTAGE_SW) && voltage->voltage) {
+ radeon_atom_set_voltage(rdev, voltage->voltage);
+ rdev->pm.current_vddc = voltage->voltage;
+ }
+ }
}
/*
--
1.6.4.2
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