From 36a94a8ad74e83a135a4b0a2157dabe50b4562a6 Mon Sep 17 00:00:00 2001 From: Rex Zhu Date: Fri, 20 Jan 2017 14:27:22 +0800 Subject: [PATCH] drm/amdgpu: fix dpm bug on Kv. 1. current_ps/request_ps not update. 2. compare crrent_ps and request_ps, if same, don't re-set power state. Signed-off-by: Rex Zhu Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/kv_dpm.c | 44 ++++++++++++++++++++++++++++++++++--- 1 file changed, 41 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/kv_dpm.c b/drivers/gpu/drm/amd/amdgpu/kv_dpm.c index 90c2af3..6b6476d 100644 --- a/drivers/gpu/drm/amd/amdgpu/kv_dpm.c +++ b/drivers/gpu/drm/amd/amdgpu/kv_dpm.c @@ -1230,6 +1230,7 @@ static void kv_update_current_ps(struct amdgpu_device *adev, pi->current_rps = *rps; pi->current_ps = *new_ps; pi->current_rps.ps_priv = &pi->current_ps; + adev->pm.dpm.current_ps = &pi->current_rps; } static void kv_update_requested_ps(struct amdgpu_device *adev, @@ -1241,6 +1242,7 @@ static void kv_update_requested_ps(struct amdgpu_device *adev, pi->requested_rps = *rps; pi->requested_ps = *new_ps; pi->requested_rps.ps_priv = &pi->requested_ps; + adev->pm.dpm.requested_ps = &pi->requested_rps; } static void kv_dpm_enable_bapm(struct amdgpu_device *adev, bool enable) @@ -3009,7 +3011,6 @@ static int kv_dpm_late_init(void *handle) kv_dpm_powergate_samu(adev, true); kv_dpm_powergate_vce(adev, true); kv_dpm_powergate_uvd(adev, true); - return 0; } @@ -3245,15 +3246,52 @@ static int kv_dpm_set_powergating_state(void *handle, return 0; } +static inline bool kv_are_power_levels_equal(const struct kv_pl *kv_cpl1, + const struct kv_pl *kv_cpl2) +{ + return ((kv_cpl1->sclk == kv_cpl2->sclk) && + (kv_cpl1->vddc_index == kv_cpl2->vddc_index) && + (kv_cpl1->ds_divider_index == kv_cpl2->ds_divider_index) && + (kv_cpl1->force_nbp_state == kv_cpl2->force_nbp_state)); +} + static int kv_check_state_equal(struct amdgpu_device *adev, struct amdgpu_ps *cps, struct amdgpu_ps *rps, bool *equal) { - if (equal == NULL) + struct kv_ps *kv_cps; + struct kv_ps *kv_rps; + int i; + + if (adev == NULL || cps == NULL || rps == NULL || equal == NULL) return -EINVAL; - *equal = false; + kv_cps = kv_get_ps(cps); + kv_rps = kv_get_ps(rps); + + if (kv_cps == NULL) { + *equal = false; + return 0; + } + + if (kv_cps->num_levels != kv_rps->num_levels) { + *equal = false; + return 0; + } + + for (i = 0; i < kv_cps->num_levels; i++) { + if (!kv_are_power_levels_equal(&(kv_cps->levels[i]), + &(kv_rps->levels[i]))) { + *equal = false; + return 0; + } + } + + /* If all performance levels are the same try to use the UVD clocks to break the tie.*/ + *equal = ((cps->vclk == rps->vclk) && (cps->dclk == rps->dclk)); + *equal &= ((cps->evclk == rps->evclk) && (cps->ecclk == rps->ecclk)); + return 0; } -- 2.7.4