From 3411717501dce5896a024bd52039c44cd23f3792 Mon Sep 17 00:00:00 2001 From: Rex Zhu Date: Fri, 14 Oct 2016 19:39:52 +0800 Subject: [PATCH] drm/amdgpu: add an implement for check_power_state equal for Si. Signed-off-by: Rex Zhu Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/si_dpm.c | 52 +++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/si_dpm.c b/drivers/gpu/drm/amd/amdgpu/si_dpm.c index 6e6c7cee3332..62edc87f33f6 100644 --- a/drivers/gpu/drm/amd/amdgpu/si_dpm.c +++ b/drivers/gpu/drm/amd/amdgpu/si_dpm.c @@ -7957,6 +7957,57 @@ static int si_dpm_early_init(void *handle) return 0; } +static inline bool si_are_power_levels_equal(const struct rv7xx_pl *si_cpl1, + const struct rv7xx_pl *si_cpl2) +{ + return ((si_cpl1->mclk == si_cpl2->mclk) && + (si_cpl1->sclk == si_cpl2->sclk) && + (si_cpl1->pcie_gen == si_cpl2->pcie_gen) && + (si_cpl1->vddc == si_cpl2->vddc) && + (si_cpl1->vddci == si_cpl2->vddci)); +} + +static int si_check_state_equal(struct amdgpu_device *adev, + struct amdgpu_ps *cps, + struct amdgpu_ps *rps, + bool *equal) +{ + struct si_ps *si_cps; + struct si_ps *si_rps; + int i; + + if (adev == NULL || cps == NULL || rps == NULL || equal == NULL) + return -EINVAL; + + si_cps = si_get_ps(cps); + si_rps = si_get_ps(rps); + + if (si_cps == NULL) { + printk("si_cps is NULL\n"); + *equal = false; + return 0; + } + + if (si_cps->performance_level_count != si_rps->performance_level_count) { + *equal = false; + return 0; + } + + for (i = 0; i < si_cps->performance_level_count; i++) { + if (!si_are_power_levels_equal(&(si_cps->performance_levels[i]), + &(si_rps->performance_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; +} + const struct amd_ip_funcs si_dpm_ip_funcs = { .name = "si_dpm", @@ -7991,6 +8042,7 @@ static const struct amdgpu_dpm_funcs si_dpm_funcs = { .get_fan_control_mode = &si_dpm_get_fan_control_mode, .set_fan_speed_percent = &si_dpm_set_fan_speed_percent, .get_fan_speed_percent = &si_dpm_get_fan_speed_percent, + .check_state_equal = &si_check_state_equal, .get_vce_clock_state = amdgpu_get_vce_clock_state, }; -- 2.20.1