diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_opregion.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_opregion.c | 58 |
1 files changed, 54 insertions, 4 deletions
diff --git a/drivers/gpu/drm/i915/intel_opregion.c b/drivers/gpu/drm/i915/intel_opregion.c index b82050c..91b68dc 100644 --- a/drivers/gpu/drm/i915/intel_opregion.c +++ b/drivers/gpu/drm/i915/intel_opregion.c @@ -396,7 +396,13 @@ int intel_opregion_notify_adapter(struct drm_device *dev, pci_power_t state) static u32 asle_set_backlight(struct drm_device *dev, u32 bclp) { struct drm_i915_private *dev_priv = dev->dev_private; + struct drm_encoder *encoder; + struct drm_connector *connector; + struct intel_connector *intel_connector = NULL; + struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[0]; struct opregion_asle __iomem *asle = dev_priv->opregion.asle; + u32 ret = 0; + bool found = false; DRM_DEBUG_DRIVER("bclp = 0x%08x\n", bclp); @@ -407,11 +413,39 @@ static u32 asle_set_backlight(struct drm_device *dev, u32 bclp) if (bclp > 255) return ASLC_BACKLIGHT_FAILED; + mutex_lock(&dev->mode_config.mutex); + /* + * Could match the OpRegion connector here instead, but we'd also need + * to verify the connector could handle a backlight call. + */ + list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) + if (encoder->crtc == crtc) { + found = true; + break; + } + + if (!found) { + ret = ASLC_BACKLIGHT_FAILED; + goto out; + } + + list_for_each_entry(connector, &dev->mode_config.connector_list, head) + if (connector->encoder == encoder) + intel_connector = to_intel_connector(connector); + + if (!intel_connector) { + ret = ASLC_BACKLIGHT_FAILED; + goto out; + } + DRM_DEBUG_KMS("updating opregion backlight %d/255\n", bclp); - intel_panel_set_backlight(dev, bclp, 255); + intel_panel_set_backlight(intel_connector, bclp, 255); iowrite32(DIV_ROUND_UP(bclp * 100, 255) | ASLE_CBLV_VALID, &asle->cblv); - return 0; +out: + mutex_unlock(&dev->mode_config.mutex); + + return ret; } static u32 asle_set_als_illum(struct drm_device *dev, u32 alsi) @@ -486,9 +520,13 @@ static u32 asle_isct_state(struct drm_device *dev) return ASLC_ISCT_STATE_FAILED; } -void intel_opregion_asle_intr(struct drm_device *dev) +static void asle_work(struct work_struct *work) { - struct drm_i915_private *dev_priv = dev->dev_private; + struct intel_opregion *opregion = + container_of(work, struct intel_opregion, asle_work); + struct drm_i915_private *dev_priv = + container_of(opregion, struct drm_i915_private, opregion); + struct drm_device *dev = dev_priv->dev; struct opregion_asle __iomem *asle = dev_priv->opregion.asle; u32 aslc_stat = 0; u32 aslc_req; @@ -535,6 +573,14 @@ void intel_opregion_asle_intr(struct drm_device *dev) iowrite32(aslc_stat, &asle->aslc); } +void intel_opregion_asle_intr(struct drm_device *dev) +{ + struct drm_i915_private *dev_priv = dev->dev_private; + + if (dev_priv->opregion.asle) + schedule_work(&dev_priv->opregion.asle_work); +} + #define ACPI_EV_DISPLAY_SWITCH (1<<0) #define ACPI_EV_LID (1<<1) #define ACPI_EV_DOCK (1<<2) @@ -735,6 +781,8 @@ void intel_opregion_fini(struct drm_device *dev) if (opregion->asle) iowrite32(ASLE_ARDY_NOT_READY, &opregion->asle->ardy); + cancel_work_sync(&dev_priv->opregion.asle_work); + if (opregion->acpi) { iowrite32(0, &opregion->acpi->drdy); @@ -828,6 +876,8 @@ int intel_opregion_setup(struct drm_device *dev) return -ENOTSUPP; } + INIT_WORK(&opregion->asle_work, asle_work); + base = acpi_os_ioremap(asls, OPREGION_SIZE); if (!base) return -ENOMEM; |
