From 08da4fcd6d98745fb1b97e37bc02e665eda8d420 Mon Sep 17 00:00:00 2001 From: Xiaojian Du Date: Tue, 29 Dec 2020 18:32:11 +0800 Subject: drm/amd/pm: modify the fine grain tuning function for Renoir This patch is to improve the fine grain tuning function for Renoir. The fine grain tuning function uses the sysfs node -- pp_od_clk_voltage to config gfxclk. Meanwhile, another sysfs node -- power_dpm_force_perfomance_level also affects the gfx clk. It will cause confusion when these two sysfs nodes works together. And the flag "od_enabled" is used to control the overdrive function for dGPU, like navi10, navi14 and navi21. APU like Renior or Vangogh uses this "od_enabled" to configure the frequency range of gfx clock, but the max value of frequency range will not be higher than the safe limit, it is not "overdrive". So this patch adds two new flags -- "fine_grain_enabled" and "fine_grain_started" to avoid this confusion, the flag will make these two sysfs nodes work separately. The flag "fine_grain_enabled" is set as "enabled" by default, so the fine grain tuning function will be enabled by default. But the flag "fine_grain_started" is set as "false" by default, so the fine grain function will not take effect until it is set as "true". Only when power_dpm_force_perfomance_level is changed to "manual" mode, the flag "fine_grain_started" will be set as "true", and the fine grain tuning function will be started. In other profile modes, including "auto", "high", "low", "profile_peak", "profile_standard", "profile_min_sclk", "profile_min_mclk", the flag "fine_grain_started" will be set as "false", and the od range of fine grain tuning function will be restored default value. Signed-off-by: Xiaojian Du Reviewed-by: Huang Rui Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/pm/amdgpu_pm.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers/gpu/drm/amd/pm/amdgpu_pm.c') diff --git a/drivers/gpu/drm/amd/pm/amdgpu_pm.c b/drivers/gpu/drm/amd/pm/amdgpu_pm.c index 97c669dd4cac..f5d97b97353a 100644 --- a/drivers/gpu/drm/amd/pm/amdgpu_pm.c +++ b/drivers/gpu/drm/amd/pm/amdgpu_pm.c @@ -2217,7 +2217,8 @@ static int default_attr_update(struct amdgpu_device *adev, struct amdgpu_device_ } else if (DEVICE_ATTR_IS(pp_od_clk_voltage)) { *states = ATTR_STATE_UNSUPPORTED; if ((is_support_sw_smu(adev) && adev->smu.od_enabled) || - (!is_support_sw_smu(adev) && hwmgr->od_enabled)) + (is_support_sw_smu(adev) && adev->smu.fine_grain_enabled) || + (!is_support_sw_smu(adev) && hwmgr->od_enabled)) *states = ATTR_STATE_SUPPORTED; } else if (DEVICE_ATTR_IS(mem_busy_percent)) { if (adev->flags & AMD_IS_APU || asic_type == CHIP_VEGA10) -- cgit v1.2.3