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| author | Asad Kamal <asad.kamal@amd.com> | 2025-11-24 20:19:13 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2026-03-23 21:17:42 +0300 |
| commit | fde815f76fa060ce5540776f2365f1bdf5cda845 (patch) | |
| tree | e8f742b64faad91c51315e72afc2e392a7403d84 | |
| parent | 2beedc3a92b726f05c81127b7578faa505e4ba1e (diff) | |
| download | linux-fde815f76fa060ce5540776f2365f1bdf5cda845.tar.xz | |
drm/amd/pm: Add mode2 support for smu_v15_0_8
Add initial mode2 support for smu_v15_0_8
v2: Move out non smu code, remove pci save/restore logic (Lijo)
v3: squash in updated msg (Alex)
Signed-off-by: Asad Kamal <asad.kamal@amd.com>
Reviewed-by: Yang Wang <kevinyang.wang@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/pm/swsmu/smu15/smu_v15_0_8_ppt.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu15/smu_v15_0_8_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu15/smu_v15_0_8_ppt.c index c4da0cdc1222..b3dc04ea5e71 100644 --- a/drivers/gpu/drm/amd/pm/swsmu/smu15/smu_v15_0_8_ppt.c +++ b/drivers/gpu/drm/amd/pm/swsmu/smu15/smu_v15_0_8_ppt.c @@ -430,6 +430,49 @@ static bool smu_v15_0_8_is_dpm_running(struct smu_context *smu) smu_v15_0_8_dpm_features.bits); } +static int smu_v15_0_8_mode2_reset(struct smu_context *smu) +{ + struct smu_msg_ctl *ctl = &smu->msg_ctl; + struct amdgpu_device *adev = smu->adev; + int timeout = 10; + int ret = 0; + + mutex_lock(&ctl->lock); + + ret = smu_msg_send_async_locked(ctl, SMU_MSG_GfxDeviceDriverReset, + SMU_RESET_MODE_2); + + if (ret) + goto out; + + /* Reset takes a bit longer, wait for 200ms. */ + msleep(200); + + dev_dbg(adev->dev, "wait for reset ack\n"); + do { + ret = smu_msg_wait_response(ctl, 0); + /* Wait a bit more time for getting ACK */ + if (ret == -ETIME) { + --timeout; + usleep_range(500, 1000); + continue; + } + + if (ret) + goto out; + + } while (ret == -ETIME && timeout); + +out: + mutex_unlock(&ctl->lock); + + if (ret) + dev_err(adev->dev, "failed to send mode2 reset, error code %d", + ret); + + return ret; +} + static const struct pptable_funcs smu_v15_0_8_ppt_funcs = { .init_allowed_features = smu_v15_0_8_init_allowed_features, .set_default_dpm_table = smu_v15_0_8_set_default_dpm_table, @@ -450,6 +493,7 @@ static const struct pptable_funcs smu_v15_0_8_ppt_funcs = { .setup_pptable = smu_v15_0_8_setup_pptable, .get_pp_feature_mask = smu_cmn_get_pp_feature_mask, .wait_for_event = smu_v15_0_wait_for_event, + .mode2_reset = smu_v15_0_8_mode2_reset, }; static void smu_v15_0_8_init_msg_ctl(struct smu_context *smu, |