diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_display.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_display.c | 62 |
1 files changed, 59 insertions, 3 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c index 51bab32fd8c6..b5d34797d606 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c @@ -332,8 +332,6 @@ int amdgpu_display_crtc_set_config(struct drm_mode_set *set, if (crtc->enabled) active = true; - pm_runtime_mark_last_busy(dev->dev); - adev = drm_to_adev(dev); /* if we have active crtcs and we don't have a power ref, * take the current one @@ -1365,6 +1363,64 @@ static const struct drm_prop_enum_list amdgpu_dither_enum_list[] = { { AMDGPU_FMT_DITHER_ENABLE, "on" }, }; +/** + * DOC: property for adaptive backlight modulation + * + * The 'adaptive backlight modulation' property is used for the compositor to + * directly control the adaptive backlight modulation power savings feature + * that is part of DCN hardware. + * + * The property will be attached specifically to eDP panels that support it. + * + * The property is by default set to 'sysfs' to allow the sysfs file 'panel_power_savings' + * to be able to control it. + * If set to 'off' the compositor will ensure it stays off. + * The other values 'min', 'bias min', 'bias max', and 'max' will control the + * intensity of the power savings. + * + * Modifying this value can have implications on color accuracy, so tread + * carefully. + */ +static int amdgpu_display_setup_abm_prop(struct amdgpu_device *adev) +{ + const struct drm_prop_enum_list props[] = { + { ABM_SYSFS_CONTROL, "sysfs" }, + { ABM_LEVEL_OFF, "off" }, + { ABM_LEVEL_MIN, "min" }, + { ABM_LEVEL_BIAS_MIN, "bias min" }, + { ABM_LEVEL_BIAS_MAX, "bias max" }, + { ABM_LEVEL_MAX, "max" }, + }; + struct drm_property *prop; + int i; + + if (!adev->dc_enabled) + return 0; + + prop = drm_property_create(adev_to_drm(adev), DRM_MODE_PROP_ENUM, + "adaptive backlight modulation", + 6); + if (!prop) + return -ENOMEM; + + for (i = 0; i < ARRAY_SIZE(props); i++) { + int ret; + + ret = drm_property_add_enum(prop, props[i].type, + props[i].name); + + if (ret) { + drm_property_destroy(adev_to_drm(adev), prop); + + return ret; + } + } + + adev->mode_info.abm_level_property = prop; + + return 0; +} + int amdgpu_display_modeset_create_props(struct amdgpu_device *adev) { int sz; @@ -1411,7 +1467,7 @@ int amdgpu_display_modeset_create_props(struct amdgpu_device *adev) "dither", amdgpu_dither_enum_list, sz); - return 0; + return amdgpu_display_setup_abm_prop(adev); } void amdgpu_display_update_priority(struct amdgpu_device *adev) |