diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c | 78 |
1 files changed, 63 insertions, 15 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c index 4811b0faafd9..b14800ac179e 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: MIT /* * Copyright 2012 Advanced Micro Devices, Inc. * @@ -66,9 +67,7 @@ struct amdgpu_atif { struct amdgpu_atif_notifications notifications; struct amdgpu_atif_functions functions; struct amdgpu_atif_notification_cfg notification_cfg; -#if defined(CONFIG_BACKLIGHT_CLASS_DEVICE) || defined(CONFIG_BACKLIGHT_CLASS_DEVICE_MODULE) struct backlight_device *bd; -#endif struct amdgpu_dm_backlight_caps backlight_caps; }; @@ -436,7 +435,6 @@ static int amdgpu_atif_handler(struct amdgpu_device *adev, DRM_DEBUG_DRIVER("ATIF: %d pending SBIOS requests\n", count); if (req.pending & ATIF_PANEL_BRIGHTNESS_CHANGE_REQUEST) { -#if defined(CONFIG_BACKLIGHT_CLASS_DEVICE) || defined(CONFIG_BACKLIGHT_CLASS_DEVICE_MODULE) if (atif->bd) { DRM_DEBUG_DRIVER("Changing brightness to %d\n", req.backlight_level); @@ -447,7 +445,6 @@ static int amdgpu_atif_handler(struct amdgpu_device *adev, */ backlight_device_set_brightness(atif->bd, req.backlight_level); } -#endif } if (req.pending & ATIF_DGPU_DISPLAY_EVENT) { @@ -849,11 +846,11 @@ int amdgpu_acpi_init(struct amdgpu_device *adev) { struct amdgpu_atif *atif = &amdgpu_acpi_priv.atif; -#if defined(CONFIG_BACKLIGHT_CLASS_DEVICE) || defined(CONFIG_BACKLIGHT_CLASS_DEVICE_MODULE) if (atif->notifications.brightness_change) { if (amdgpu_device_has_dc_support(adev)) { #if defined(CONFIG_DRM_AMD_DC) struct amdgpu_display_manager *dm = &adev->dm; + if (dm->backlight_dev[0]) atif->bd = dm->backlight_dev[0]; #endif @@ -868,6 +865,7 @@ int amdgpu_acpi_init(struct amdgpu_device *adev) if ((enc->devices & (ATOM_DEVICE_LCD_SUPPORT)) && enc->enc_priv) { struct amdgpu_encoder_atom_dig *dig = enc->enc_priv; + if (dig->bl_dev) { atif->bd = dig->bl_dev; break; @@ -876,7 +874,6 @@ int amdgpu_acpi_init(struct amdgpu_device *adev) } } } -#endif adev->acpi_nb.notifier_call = amdgpu_acpi_event; register_acpi_notifier(&adev->acpi_nb); @@ -925,9 +922,9 @@ static bool amdgpu_atif_pci_probe_handle(struct pci_dev *pdev) return false; status = acpi_get_handle(dhandle, "ATIF", &atif_handle); - if (ACPI_FAILURE(status)) { + if (ACPI_FAILURE(status)) return false; - } + amdgpu_acpi_priv.atif.handle = atif_handle; acpi_get_name(amdgpu_acpi_priv.atif.handle, ACPI_FULL_PATHNAME, &buffer); DRM_DEBUG_DRIVER("Found ATIF handle %s\n", acpi_method_name); @@ -960,9 +957,9 @@ static bool amdgpu_atcs_pci_probe_handle(struct pci_dev *pdev) return false; status = acpi_get_handle(dhandle, "ATCS", &atcs_handle); - if (ACPI_FAILURE(status)) { + if (ACPI_FAILURE(status)) return false; - } + amdgpu_acpi_priv.atcs.handle = atcs_handle; acpi_get_name(amdgpu_acpi_priv.atcs.handle, ACPI_FULL_PATHNAME, &buffer); DRM_DEBUG_DRIVER("Found ATCS handle %s\n", acpi_method_name); @@ -1031,6 +1028,38 @@ void amdgpu_acpi_detect(void) } } +#if IS_ENABLED(CONFIG_SUSPEND) +/** + * amdgpu_acpi_is_s3_active + * + * @adev: amdgpu_device_pointer + * + * returns true if supported, false if not. + */ +bool amdgpu_acpi_is_s3_active(struct amdgpu_device *adev) +{ + return !(adev->flags & AMD_IS_APU) || + (pm_suspend_target_state == PM_SUSPEND_MEM); +} + +/** + * amdgpu_acpi_should_gpu_reset + * + * @adev: amdgpu_device_pointer + * + * returns true if should reset GPU, false if not + */ +bool amdgpu_acpi_should_gpu_reset(struct amdgpu_device *adev) +{ + if (adev->flags & AMD_IS_APU) + return false; + + if (amdgpu_sriov_vf(adev)) + return false; + + return pm_suspend_target_state != PM_SUSPEND_TO_IDLE; +} + /** * amdgpu_acpi_is_s0ix_active * @@ -1040,11 +1069,30 @@ void amdgpu_acpi_detect(void) */ bool amdgpu_acpi_is_s0ix_active(struct amdgpu_device *adev) { -#if IS_ENABLED(CONFIG_AMD_PMC) && IS_ENABLED(CONFIG_SUSPEND) - if (acpi_gbl_FADT.flags & ACPI_FADT_LOW_POWER_S0) { - if (adev->flags & AMD_IS_APU) - return pm_suspend_target_state == PM_SUSPEND_TO_IDLE; + if (!(adev->flags & AMD_IS_APU) || + (pm_suspend_target_state != PM_SUSPEND_TO_IDLE)) + return false; + + /* + * If ACPI_FADT_LOW_POWER_S0 is not set in the FADT, it is generally + * risky to do any special firmware-related preparations for entering + * S0ix even though the system is suspending to idle, so return false + * in that case. + */ + if (!(acpi_gbl_FADT.flags & ACPI_FADT_LOW_POWER_S0)) { + dev_warn_once(adev->dev, + "Power consumption will be higher as BIOS has not been configured for suspend-to-idle.\n" + "To use suspend-to-idle change the sleep mode in BIOS setup.\n"); + return false; } -#endif + +#if !IS_ENABLED(CONFIG_AMD_PMC) + dev_warn_once(adev->dev, + "Power consumption will be higher as the kernel has not been compiled with CONFIG_AMD_PMC.\n"); return false; +#else + return true; +#endif /* CONFIG_AMD_PMC */ } + +#endif /* CONFIG_SUSPEND */ |