From a144acbcfbfea44a80afc8f880a7ad72bf01c819 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Thu, 27 Jun 2013 19:37:12 -0400 Subject: [PATCH] drm/radeon/SI: fix TDP adjustment in set_power_state Fixes hangs with DPM in some cases. Signed-off-by: Alex Deucher --- drivers/gpu/drm/radeon/si_dpm.c | 69 +++++++++++++++------------------ 1 file changed, 32 insertions(+), 37 deletions(-) diff --git a/drivers/gpu/drm/radeon/si_dpm.c b/drivers/gpu/drm/radeon/si_dpm.c index 494ba17cc028..6918f070eb52 100644 --- a/drivers/gpu/drm/radeon/si_dpm.c +++ b/drivers/gpu/drm/radeon/si_dpm.c @@ -5864,6 +5864,32 @@ int si_dpm_pre_set_power_state(struct radeon_device *rdev) return 0; } +static int si_power_control_set_level(struct radeon_device *rdev) +{ + struct radeon_ps *new_ps = rdev->pm.dpm.requested_ps; + int ret; + + ret = si_restrict_performance_levels_before_switch(rdev); + if (ret) + return ret; + ret = si_halt_smc(rdev); + if (ret) + return ret; + ret = si_populate_smc_tdp_limits(rdev, new_ps); + if (ret) + return ret; + ret = si_populate_smc_tdp_limits_2(rdev, new_ps); + if (ret) + return ret; + ret = si_resume_smc(rdev); + if (ret) + return ret; + ret = si_set_sw_state(rdev); + if (ret) + return ret; + return 0; +} + int si_dpm_set_power_state(struct radeon_device *rdev) { struct evergreen_power_info *eg_pi = evergreen_get_pi(rdev); @@ -5928,16 +5954,6 @@ int si_dpm_set_power_state(struct radeon_device *rdev) } si_set_pcie_lane_width_in_smc(rdev, new_ps, old_ps); - ret = si_populate_smc_tdp_limits(rdev, new_ps); - if (ret) { - DRM_ERROR("si_populate_smc_tdp_limits failed\n"); - return ret; - } - ret = si_populate_smc_tdp_limits_2(rdev, new_ps); - if (ret) { - DRM_ERROR("si_populate_smc_tdp_limits_2 failed\n"); - return ret; - } ret = si_resume_smc(rdev); if (ret) { DRM_ERROR("si_resume_smc failed\n"); @@ -5967,6 +5983,12 @@ int si_dpm_set_power_state(struct radeon_device *rdev) return ret; } + ret = si_power_control_set_level(rdev); + if (ret) { + DRM_ERROR("si_power_control_set_level failed\n"); + return ret; + } + #if 0 /* XXX */ ret = si_unrestrict_performance_levels_after_switch(rdev); @@ -5979,33 +6001,6 @@ int si_dpm_set_power_state(struct radeon_device *rdev) return 0; } - -int si_power_control_set_level(struct radeon_device *rdev) -{ - struct radeon_ps *new_ps = rdev->pm.dpm.requested_ps; - int ret; - - ret = si_restrict_performance_levels_before_switch(rdev); - if (ret) - return ret; - ret = si_halt_smc(rdev); - if (ret) - return ret; - ret = si_populate_smc_tdp_limits(rdev, new_ps); - if (ret) - return ret; - ret = si_populate_smc_tdp_limits_2(rdev, new_ps); - if (ret) - return ret; - ret = si_resume_smc(rdev); - if (ret) - return ret; - ret = si_set_sw_state(rdev); - if (ret) - return ret; - return 0; -} - void si_dpm_post_set_power_state(struct radeon_device *rdev) { struct evergreen_power_info *eg_pi = evergreen_get_pi(rdev); -- 2.20.1