From 8b5e6b7f0ec81f237d87cf9632309db9481c6fb5 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Tue, 2 Jul 2013 18:40:35 -0400 Subject: [PATCH] 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 --- drivers/gpu/drm/radeon/btc_dpm.c | 4 ++-- drivers/gpu/drm/radeon/cypress_dpm.c | 4 ++-- drivers/gpu/drm/radeon/ppsmc.h | 2 ++ drivers/gpu/drm/radeon/radeon_asic.c | 3 +++ drivers/gpu/drm/radeon/radeon_asic.h | 2 ++ drivers/gpu/drm/radeon/rv770_dpm.c | 31 +++++++++++++++++++++------- drivers/gpu/drm/radeon/rv770_dpm.h | 3 ++- 7 files changed, 37 insertions(+), 12 deletions(-) diff --git a/drivers/gpu/drm/radeon/btc_dpm.c b/drivers/gpu/drm/radeon/btc_dpm.c index f072660c7665..91567448c55d 100644 --- a/drivers/gpu/drm/radeon/btc_dpm.c +++ b/drivers/gpu/drm/radeon/btc_dpm.c @@ -2326,9 +2326,9 @@ int btc_dpm_set_power_state(struct radeon_device *rdev) 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 5ada922e5cec..9ef840807dd1 100644 --- a/drivers/gpu/drm/radeon/cypress_dpm.c +++ b/drivers/gpu/drm/radeon/cypress_dpm.c @@ -2014,9 +2014,9 @@ int cypress_dpm_set_power_state(struct radeon_device *rdev) 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 8fb1113a8fd7..fc71ca6b04ca 100644 --- a/drivers/gpu/drm/radeon/ppsmc.h +++ b/drivers/gpu/drm/radeon/ppsmc.h @@ -71,6 +71,8 @@ typedef uint8_t PPSMC_Result; #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 a5b244dc50ca..221a0b31e649 100644 --- a/drivers/gpu/drm/radeon/radeon_asic.c +++ b/drivers/gpu/drm/radeon/radeon_asic.c @@ -1393,6 +1393,7 @@ static struct radeon_asic rv770_asic = { .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 @@ static struct radeon_asic evergreen_asic = { .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 @@ static struct radeon_asic btc_asic = { .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 6822c7aeacaa..a053dc1e7866 100644 --- a/drivers/gpu/drm/radeon/radeon_asic.h +++ b/drivers/gpu/drm/radeon/radeon_asic.h @@ -478,6 +478,8 @@ void rv770_dpm_print_power_state(struct radeon_device *rdev, 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 9af464d48eaa..c3025de4f4e2 100644 --- a/drivers/gpu/drm/radeon/rv770_dpm.c +++ b/drivers/gpu/drm/radeon/rv770_dpm.c @@ -1471,14 +1471,30 @@ int rv770_restrict_performance_levels_before_switch(struct radeon_device *rdev) return 0; } -int rv770_unrestrict_performance_levels_after_switch(struct radeon_device *rdev) -{ - if (rv770_send_msg_to_smc(rdev, (PPSMC_Msg)(PPSMC_MSG_NoForcedLevel)) != PPSMC_Result_OK) - return -EINVAL; +int rv770_dpm_force_performance_level(struct radeon_device *rdev, + enum radeon_dpm_forced_level level) +{ + 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, (PPSMC_Msg)(PPSMC_MSG_ZeroLevelsDisabled)) != PPSMC_Result_OK) + if (rv770_send_msg_to_smc(rdev, msg) != PPSMC_Result_OK) return -EINVAL; + rdev->pm.dpm.forced_level = level; + return 0; } @@ -2047,9 +2063,10 @@ int rv770_dpm_set_power_state(struct radeon_device *rdev) 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 f1e1fcf7f622..96b1b2a62a8a 100644 --- a/drivers/gpu/drm/radeon/rv770_dpm.h +++ b/drivers/gpu/drm/radeon/rv770_dpm.h @@ -262,7 +262,8 @@ void rv770_stop_dpm(struct radeon_device *rdev); 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); -- 2.39.2