答复: [PATCH] drm/amd/pm: add smu power_limit callback for smu_v13_0_7

[Feng, Kenneth]

[AMD Official Use Only - General]

Reviewed-by: Kenneth Feng <kenneth.feng at amd.com<mailto:kenneth.feng at amd.com>>

Best wishes
Kenneth Feng


发件人: amd-gfx <amd-gfx-bounces at lists.freedesktop.org> 代表 Yang Wang <KevinYang.Wang at amd.com>
日期: 星期三, 2022年5月11日 15:01
收件人: amd-gfx at lists.freedesktop.org <amd-gfx at lists.freedesktop.org>
抄送: Wang, Yang(Kevin) <KevinYang.Wang at amd.com>
主题: [PATCH] drm/amd/pm: add smu power_limit callback for smu_v13_0_7
[CAUTION: External Email]

- get_power_limit
- set_power_limit

add above callback functions to enable power_cap hwmon node.

Signed-off-by: Yang Wang <KevinYang.Wang at amd.com>
---
 .../drm/amd/pm/swsmu/smu13/smu_v13_0_7_ppt.c  | 39 +++++++++++++++++++
 1 file changed, 39 insertions(+)

diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_7_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_7_ppt.c
index 7c9e0ba7ab50..4e1861fb2c6a 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_7_ppt.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_7_ppt.c
@@ -1367,6 +1367,43 @@ static int smu_v13_0_7_enable_mgpu_fan_boost(struct smu_context *smu)
                                               NULL);
 }

+static int smu_v13_0_7_get_power_limit(struct smu_context *smu,
+                                      uint32_t *current_power_limit,
+                                      uint32_t *default_power_limit,
+                                      uint32_t *max_power_limit)
+{
+       struct smu_table_context *table_context = &smu->smu_table;
+       struct smu_13_0_7_powerplay_table *powerplay_table =
+               (struct smu_13_0_7_powerplay_table *)table_context->power_play_table;
+       PPTable_t *pptable = table_context->driver_pptable;
+       SkuTable_t *skutable = &pptable->SkuTable;
+       uint32_t power_limit, od_percent;
+
+       if (smu_v13_0_get_current_power_limit(smu, &power_limit))
+               power_limit = smu->adev->pm.ac_power ?
+                             skutable->SocketPowerLimitAc[PPT_THROTTLER_PPT0] :
+                             skutable->SocketPowerLimitDc[PPT_THROTTLER_PPT0];
+
+       if (current_power_limit)
+               *current_power_limit = power_limit;
+       if (default_power_limit)
+               *default_power_limit = power_limit;
+
+       if (max_power_limit) {
+               if (smu->od_enabled) {
+                       od_percent = le32_to_cpu(powerplay_table->overdrive_table.max[SMU_13_0_7_ODSETTING_POWERPERCENTAGE]);
+
+                       dev_dbg(smu->adev->dev, "ODSETTING_POWERPERCENTAGE: %d (default: %d)\n", od_percent, power_limit);
+
+                       power_limit *= (100 + od_percent);
+                       power_limit /= 100;
+               }
+               *max_power_limit = power_limit;
+       }
+
+       return 0;
+}
+
 static int smu_v13_0_7_get_power_profile_mode(struct smu_context *smu, char *buf)
 {
        DpmActivityMonitorCoeffIntExternal_t activity_monitor_external[PP_SMC_POWER_PROFILE_COUNT];
@@ -1539,6 +1576,8 @@ static const struct pptable_funcs smu_v13_0_7_ppt_funcs = {
        .get_fan_control_mode = smu_v13_0_get_fan_control_mode,
        .set_fan_control_mode = smu_v13_0_set_fan_control_mode,
        .enable_mgpu_fan_boost = smu_v13_0_7_enable_mgpu_fan_boost,
+       .get_power_limit = smu_v13_0_7_get_power_limit,
+       .set_power_limit = smu_v13_0_set_power_limit,
        .get_power_profile_mode = smu_v13_0_7_get_power_profile_mode,
        .set_power_profile_mode = smu_v13_0_7_set_power_profile_mode,
        .set_tool_table_location = smu_v13_0_set_tool_table_location,
--
2.25.1
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