diff options
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c | 24 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c | 4 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/pm/swsmu/smu_cmn.c | 21 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/pm/swsmu/smu_cmn.h | 2 |
4 files changed, 47 insertions, 4 deletions
diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c index aec7cb21cc0f..b1ad451af06b 100644 --- a/drivers/gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c +++ b/drivers/gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c @@ -2274,7 +2274,27 @@ static int navi10_baco_enter(struct smu_context *smu) { struct amdgpu_device *adev = smu->adev; - if (adev->in_runpm) + /* + * This aims the case below: + * amdgpu driver loaded -> runpm suspend kicked -> sound driver loaded + * + * For NAVI10 and later ASICs, we rely on PMFW to handle the runpm. To + * make that possible, PMFW needs to acknowledge the dstate transition + * process for both gfx(function 0) and audio(function 1) function of + * the ASIC. + * + * The PCI device's initial runpm status is RUNPM_SUSPENDED. So as the + * device representing the audio function of the ASIC. And that means + * even if the sound driver(snd_hda_intel) was not loaded yet, it's still + * possible runpm suspend kicked on the ASIC. However without the dstate + * transition notification from audio function, pmfw cannot handle the + * BACO in/exit correctly. And that will cause driver hang on runpm + * resuming. + * + * To address this, we revert to legacy message way(driver masters the + * timing for BACO in/exit) on sound driver missing. + */ + if (adev->in_runpm && smu_cmn_is_audio_func_enabled(adev)) return smu_v11_0_baco_set_armd3_sequence(smu, BACO_SEQ_BACO); else return smu_v11_0_baco_enter(smu); @@ -2284,7 +2304,7 @@ static int navi10_baco_exit(struct smu_context *smu) { struct amdgpu_device *adev = smu->adev; - if (adev->in_runpm) { + if (adev->in_runpm && smu_cmn_is_audio_func_enabled(adev)) { /* Wait for PMFW handling for the Dstate change */ msleep(10); return smu_v11_0_baco_set_armd3_sequence(smu, BACO_SEQ_ULPS); diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c index d7519688065f..ca57221e3962 100644 --- a/drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c +++ b/drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c @@ -2189,7 +2189,7 @@ static int sienna_cichlid_baco_enter(struct smu_context *smu) { struct amdgpu_device *adev = smu->adev; - if (adev->in_runpm) + if (adev->in_runpm && smu_cmn_is_audio_func_enabled(adev)) return smu_v11_0_baco_set_armd3_sequence(smu, BACO_SEQ_BACO); else return smu_v11_0_baco_enter(smu); @@ -2199,7 +2199,7 @@ static int sienna_cichlid_baco_exit(struct smu_context *smu) { struct amdgpu_device *adev = smu->adev; - if (adev->in_runpm) { + if (adev->in_runpm && smu_cmn_is_audio_func_enabled(adev)) { /* Wait for PMFW handling for the Dstate change */ msleep(10); return smu_v11_0_baco_set_armd3_sequence(smu, BACO_SEQ_ULPS); diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu_cmn.c b/drivers/gpu/drm/amd/pm/swsmu/smu_cmn.c index 66711ab24c15..843d2cbfc71d 100644 --- a/drivers/gpu/drm/amd/pm/swsmu/smu_cmn.c +++ b/drivers/gpu/drm/amd/pm/swsmu/smu_cmn.c @@ -1053,3 +1053,24 @@ int smu_cmn_set_mp1_state(struct smu_context *smu, return ret; } + +bool smu_cmn_is_audio_func_enabled(struct amdgpu_device *adev) +{ + struct pci_dev *p = NULL; + bool snd_driver_loaded; + + /* + * If the ASIC comes with no audio function, we always assume + * it is "enabled". + */ + p = pci_get_domain_bus_and_slot(pci_domain_nr(adev->pdev->bus), + adev->pdev->bus->number, 1); + if (!p) + return true; + + snd_driver_loaded = pci_is_enabled(p) ? true : false; + + pci_dev_put(p); + + return snd_driver_loaded; +} diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu_cmn.h b/drivers/gpu/drm/amd/pm/swsmu/smu_cmn.h index 4054d9493e77..beea03810bca 100644 --- a/drivers/gpu/drm/amd/pm/swsmu/smu_cmn.h +++ b/drivers/gpu/drm/amd/pm/swsmu/smu_cmn.h @@ -123,5 +123,7 @@ static inline void smu_cmn_get_sysfs_buf(char **buf, int *offset) *buf -= *offset; } +bool smu_cmn_is_audio_func_enabled(struct amdgpu_device *adev); + #endif #endif |