From: Wang, Kevin(Yang) <Kevin1.Wang@xxxxxxx>
Sent: Monday, September 23, 2019 5:25 PM
To: Liang, Prike <Prike.Liang@xxxxxxx>; amd-gfx@xxxxxxxxxxxxxxxxxxxxx
Cc: arron.liu@xxxxxxx; Huang, Ray <Ray.Huang@xxxxxxx>; Quan, Evan <Evan.Quan@xxxxxxx>; Feng, Kenneth <Kenneth.Feng@xxxxxxx>
Subject: Re: [PATCH 2/5] drm/amd/powerplay: add interface for forcing and unforcing dpm limit value
That's base function for forcing and unforcing dpm limit value.
Signed-off-by: Prike Liang <Prike.Liang@xxxxxxx>
---
drivers/gpu/drm/amd/powerplay/renoir_ppt.c | 62 ++++++++++++++++++++++++++++++
1 file changed, 62 insertions(+)
diff --git a/drivers/gpu/drm/amd/powerplay/renoir_ppt.c b/drivers/gpu/drm/amd/powerplay/renoir_ppt.c
index 9311b6a..4bb7e1c 100644
--- a/drivers/gpu/drm/amd/powerplay/renoir_ppt.c
+++ b/drivers/gpu/drm/amd/powerplay/renoir_ppt.c
@@ -304,6 +304,66 @@ static int renoir_dpm_set_uvd_enable(struct smu_context *smu, bool enable)
return ret;
}
+static int renoir_force_dpm_limit_value(struct smu_context *smu, bool highest)
+{
+ int ret = 0, i = 0;
+ uint32_t min_freq, max_freq, force_freq;
+ enum smu_clk_type clk_type;
+
+ enum smu_clk_type clks[] = {
+ SMU_GFXCLK,
+ SMU_MCLK,
+ SMU_SOCCLK,
+ };
+
+ for (i = 0; i < ARRAY_SIZE(clks); i++) {
+ clk_type = clks[i];
+ ret = smu_get_dpm_freq_range(smu, clk_type, &min_freq, &max_freq);
+ if (ret)
+ return ret;
+
+ force_freq = highest ? max_freq : min_freq;
+ ret = smu_set_soft_freq_range(smu, clk_type, force_freq, force_freq);
this api is depend on message "SetSoftMaxByFreq" and "SetSoftMinByFreq".
the apu has this message? and have you verify it?
[Prike]:
Seems APU hasn’t export the message and need send the related clock such as PPSMC_MSG_SetSoftMaxGfxClk
for this case.
+ if (ret)
+ return ret;
+ }
+
+ return ret;
+}
+
+static int renoir_unforce_dpm_levels(struct smu_context *smu) {
+
+ int ret = 0, i = 0;
+ uint32_t min_freq, max_freq;
+ enum smu_clk_type clk_type;
+
+ struct clk_feature_map {
+ enum smu_clk_type clk_type;
+ uint32_t feature;
+ } clk_feature_map[] = {
+ {SMU_GFXCLK, SMU_FEATURE_DPM_GFXCLK_BIT},
+ {SMU_MCLK, SMU_FEATURE_DPM_UCLK_BIT},
+ {SMU_SOCCLK, SMU_FEATURE_DPM_SOCCLK_BIT},
+ };
+
+ for (i = 0; i < ARRAY_SIZE(clk_feature_map); i++) {
+ if (!smu_feature_is_enabled(smu, clk_feature_map[i].feature))
+ continue;
+
+ clk_type = clk_feature_map[i].clk_type;
+
+ ret = smu_get_dpm_freq_range(smu, clk_type, &min_freq, &max_freq);
+ if (ret)
+ return ret;
+
+ ret = smu_set_soft_freq_range(smu, clk_type, min_freq, max_freq);
+ if (ret)
+ return ret;
+ }
+
+ return ret;
+}
+
static const struct pptable_funcs renoir_ppt_funcs = {
.get_smu_msg_index = renoir_get_smu_msg_index,
.get_smu_table_index = renoir_get_smu_table_index,
@@ -313,6 +373,8 @@ static const struct pptable_funcs renoir_ppt_funcs = {
.print_clk_levels = renoir_print_clk_levels,
.get_current_power_state = renoir_get_current_power_state,
.dpm_set_uvd_enable = renoir_dpm_set_uvd_enable,
+ .force_dpm_limit_value = renoir_force_dpm_limit_value,
+ .unforce_dpm_levels = renoir_unforce_dpm_levels,
};
void renoir_set_ppt_funcs(struct smu_context *smu)
--
2.7.4
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