drm/radeon/dpm: implement force performance levels for 7xx/eg/btc
Allows you to limit the selected power levels via sysfs.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/radeon/btc_dpm.c b/drivers/gpu/drm/radeon/btc_dpm.c
index f072660..9156744 100644
--- a/drivers/gpu/drm/radeon/btc_dpm.c
+++ b/drivers/gpu/drm/radeon/btc_dpm.c
@@ -2326,9 +2326,9 @@
return ret;
}
- ret = rv770_unrestrict_performance_levels_after_switch(rdev);
+ ret = rv770_dpm_force_performance_level(rdev, RADEON_DPM_FORCED_LEVEL_AUTO);
if (ret) {
- DRM_ERROR("rv770_unrestrict_performance_levels_after_switch failed\n");
+ DRM_ERROR("rv770_dpm_force_performance_level failed\n");
return ret;
}
diff --git a/drivers/gpu/drm/radeon/cypress_dpm.c b/drivers/gpu/drm/radeon/cypress_dpm.c
index 5ada922..9ef8408 100644
--- a/drivers/gpu/drm/radeon/cypress_dpm.c
+++ b/drivers/gpu/drm/radeon/cypress_dpm.c
@@ -2014,9 +2014,9 @@
if (eg_pi->pcie_performance_request)
cypress_notify_link_speed_change_after_state_change(rdev, new_ps, old_ps);
- ret = rv770_unrestrict_performance_levels_after_switch(rdev);
+ ret = rv770_dpm_force_performance_level(rdev, RADEON_DPM_FORCED_LEVEL_AUTO);
if (ret) {
- DRM_ERROR("rv770_unrestrict_performance_levels_after_switch failed\n");
+ DRM_ERROR("rv770_dpm_force_performance_level failed\n");
return ret;
}
diff --git a/drivers/gpu/drm/radeon/ppsmc.h b/drivers/gpu/drm/radeon/ppsmc.h
index 8fb1113..fc71ca6 100644
--- a/drivers/gpu/drm/radeon/ppsmc.h
+++ b/drivers/gpu/drm/radeon/ppsmc.h
@@ -71,6 +71,8 @@
#define PPSMC_MSG_SwitchToSwState ((uint8_t)0x20)
#define PPSMC_MSG_SwitchToInitialState ((uint8_t)0x40)
#define PPSMC_MSG_NoForcedLevel ((uint8_t)0x41)
+#define PPSMC_MSG_ForceHigh ((uint8_t)0x42)
+#define PPSMC_MSG_ForceMediumOrHigh ((uint8_t)0x43)
#define PPSMC_MSG_SwitchToMinimumPower ((uint8_t)0x51)
#define PPSMC_MSG_ResumeFromMinimumPower ((uint8_t)0x52)
#define PPSMC_MSG_EnableCac ((uint8_t)0x53)
diff --git a/drivers/gpu/drm/radeon/radeon_asic.c b/drivers/gpu/drm/radeon/radeon_asic.c
index a5b244d..221a0b3 100644
--- a/drivers/gpu/drm/radeon/radeon_asic.c
+++ b/drivers/gpu/drm/radeon/radeon_asic.c
@@ -1393,6 +1393,7 @@
.get_mclk = &rv770_dpm_get_mclk,
.print_power_state = &rv770_dpm_print_power_state,
.debugfs_print_current_performance_level = &rv770_dpm_debugfs_print_current_performance_level,
+ .force_performance_level = &rv770_dpm_force_performance_level,
},
.pflip = {
.pre_page_flip = &rs600_pre_page_flip,
@@ -1516,6 +1517,7 @@
.get_mclk = &rv770_dpm_get_mclk,
.print_power_state = &rv770_dpm_print_power_state,
.debugfs_print_current_performance_level = &rv770_dpm_debugfs_print_current_performance_level,
+ .force_performance_level = &rv770_dpm_force_performance_level,
},
.pflip = {
.pre_page_flip = &evergreen_pre_page_flip,
@@ -1762,6 +1764,7 @@
.get_mclk = &btc_dpm_get_mclk,
.print_power_state = &rv770_dpm_print_power_state,
.debugfs_print_current_performance_level = &rv770_dpm_debugfs_print_current_performance_level,
+ .force_performance_level = &rv770_dpm_force_performance_level,
},
.pflip = {
.pre_page_flip = &evergreen_pre_page_flip,
diff --git a/drivers/gpu/drm/radeon/radeon_asic.h b/drivers/gpu/drm/radeon/radeon_asic.h
index 6822c7a..a053dc1 100644
--- a/drivers/gpu/drm/radeon/radeon_asic.h
+++ b/drivers/gpu/drm/radeon/radeon_asic.h
@@ -478,6 +478,8 @@
struct radeon_ps *ps);
void rv770_dpm_debugfs_print_current_performance_level(struct radeon_device *rdev,
struct seq_file *m);
+int rv770_dpm_force_performance_level(struct radeon_device *rdev,
+ enum radeon_dpm_forced_level level);
/*
* evergreen
diff --git a/drivers/gpu/drm/radeon/rv770_dpm.c b/drivers/gpu/drm/radeon/rv770_dpm.c
index 9af464d..c3025de 100644
--- a/drivers/gpu/drm/radeon/rv770_dpm.c
+++ b/drivers/gpu/drm/radeon/rv770_dpm.c
@@ -1471,13 +1471,29 @@
return 0;
}
-int rv770_unrestrict_performance_levels_after_switch(struct radeon_device *rdev)
+int rv770_dpm_force_performance_level(struct radeon_device *rdev,
+ enum radeon_dpm_forced_level level)
{
- if (rv770_send_msg_to_smc(rdev, (PPSMC_Msg)(PPSMC_MSG_NoForcedLevel)) != PPSMC_Result_OK)
+ PPSMC_Msg msg;
+
+ if (level == RADEON_DPM_FORCED_LEVEL_HIGH) {
+ if (rv770_send_msg_to_smc(rdev, PPSMC_MSG_ZeroLevelsDisabled) != PPSMC_Result_OK)
+ return -EINVAL;
+ msg = PPSMC_MSG_ForceHigh;
+ } else if (level == RADEON_DPM_FORCED_LEVEL_LOW) {
+ if (rv770_send_msg_to_smc(rdev, PPSMC_MSG_NoForcedLevel) != PPSMC_Result_OK)
+ return -EINVAL;
+ msg = (PPSMC_Msg)(PPSMC_MSG_TwoLevelsDisabled);
+ } else {
+ if (rv770_send_msg_to_smc(rdev, PPSMC_MSG_NoForcedLevel) != PPSMC_Result_OK)
+ return -EINVAL;
+ msg = (PPSMC_Msg)(PPSMC_MSG_ZeroLevelsDisabled);
+ }
+
+ if (rv770_send_msg_to_smc(rdev, msg) != PPSMC_Result_OK)
return -EINVAL;
- if (rv770_send_msg_to_smc(rdev, (PPSMC_Msg)(PPSMC_MSG_ZeroLevelsDisabled)) != PPSMC_Result_OK)
- return -EINVAL;
+ rdev->pm.dpm.forced_level = level;
return 0;
}
@@ -2047,9 +2063,10 @@
if (pi->dcodt)
rv770_program_dcodt_after_state_switch(rdev, new_ps, old_ps);
rv770_set_uvd_clock_after_set_eng_clock(rdev, new_ps, old_ps);
- ret = rv770_unrestrict_performance_levels_after_switch(rdev);
+
+ ret = rv770_dpm_force_performance_level(rdev, RADEON_DPM_FORCED_LEVEL_AUTO);
if (ret) {
- DRM_ERROR("rv770_unrestrict_performance_levels_after_switch failed\n");
+ DRM_ERROR("rv770_dpm_force_performance_level failed\n");
return ret;
}
diff --git a/drivers/gpu/drm/radeon/rv770_dpm.h b/drivers/gpu/drm/radeon/rv770_dpm.h
index f1e1fcf..96b1b2a 100644
--- a/drivers/gpu/drm/radeon/rv770_dpm.h
+++ b/drivers/gpu/drm/radeon/rv770_dpm.h
@@ -262,7 +262,8 @@
void r7xx_stop_smc(struct radeon_device *rdev);
void rv770_reset_smio_status(struct radeon_device *rdev);
int rv770_restrict_performance_levels_before_switch(struct radeon_device *rdev);
-int rv770_unrestrict_performance_levels_after_switch(struct radeon_device *rdev);
+int rv770_dpm_force_performance_level(struct radeon_device *rdev,
+ enum radeon_dpm_forced_level level);
int rv770_halt_smc(struct radeon_device *rdev);
int rv770_resume_smc(struct radeon_device *rdev);
int rv770_set_sw_state(struct radeon_device *rdev);