From 8e1b56a4b1deb3d25674c49255388902901f2c45 Mon Sep 17 00:00:00 2001 From: Jani Nikula Date: Wed, 16 Nov 2016 13:29:56 +0200 Subject: [PATCH] drm/i915: make i915 the source of acpi device ids for _DOD The graphics driver is supposed to define the DIDL, which are used for _DOD, not the BIOS. Restore that behaviour. This is basically a revert of commit 3143751ff51a163b77f7efd389043e038f3e008e Author: Zhang Rui Date: Mon Mar 29 15:12:16 2010 +0800 drm/i915: set DIDL using the ACPI video output device _ADR method return. which went out of its way to cater to a specific BIOS, setting up DIDL based on _ADR method. Perhaps that approach worked on that specific machine, but on the machines I checked the _ADR method invents the device identifiers out of thin air if DIDL has not been set. The source for _ADR is also supposed to be the DIDL set by the driver, not the other way around. With this, we'll also limit the number of outputs to what the driver actually has. A side effect of this change is that the DIDL, and by proxy CADL, will be initialized in the order of the connector list. That, in turn, has internal panels in front, ensuring they're included in the DIDL and CADL lists. Hopefully this ensures the BIOS does not block backlight hotkey events, thinking the internal panel is off. v2: do not set ACPI_DEVICE_ID_SCHEME in the device id (Peter Wu) v3: Rebase Cc: Peter Wu Cc: Rainer Koenig Cc: Jan-Marek Glogowski Cc: Maarten Lankhorst Cc: Marcos Paulo de Souza Cc: Paolo Stivanin Tested-by: Rainer Koenig Tested-by: Paolo Stivanin Tested-by: Marcos Paulo de Souza Reviewed-and-tested-by: Peter Wu Signed-off-by: Jani Nikula Link: http://patchwork.freedesktop.org/patch/msgid/9660d29cf310c17bbf4d58c0e09d5b047446e2d5.1479295490.git.jani.nikula@intel.com --- drivers/gpu/drm/i915/intel_drv.h | 3 + drivers/gpu/drm/i915/intel_opregion.c | 88 ++++++++------------------- 2 files changed, 27 insertions(+), 64 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index 0be407e50d61..5b93455b98b7 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -294,6 +294,9 @@ struct intel_connector { */ struct intel_encoder *encoder; + /* ACPI device id for ACPI and driver cooperation */ + u32 acpi_device_id; + /* Reads out the current hw, returning true if the connector is enabled * and active (i.e. dpms ON state). */ bool (*get_hw_state)(struct intel_connector *); diff --git a/drivers/gpu/drm/i915/intel_opregion.c b/drivers/gpu/drm/i915/intel_opregion.c index 7acbbbf97833..6bac71c26e94 100644 --- a/drivers/gpu/drm/i915/intel_opregion.c +++ b/drivers/gpu/drm/i915/intel_opregion.c @@ -674,11 +674,11 @@ static void set_did(struct intel_opregion *opregion, int i, u32 val) } } -static u32 acpi_display_type(struct drm_connector *connector) +static u32 acpi_display_type(struct intel_connector *connector) { u32 display_type; - switch (connector->connector_type) { + switch (connector->base.connector_type) { case DRM_MODE_CONNECTOR_VGA: case DRM_MODE_CONNECTOR_DVIA: display_type = ACPI_DISPLAY_TYPE_VGA; @@ -707,7 +707,7 @@ static u32 acpi_display_type(struct drm_connector *connector) display_type = ACPI_DISPLAY_TYPE_OTHER; break; default: - MISSING_CASE(connector->connector_type); + MISSING_CASE(connector->base.connector_type); display_type = ACPI_DISPLAY_TYPE_OTHER; break; } @@ -718,34 +718,9 @@ static u32 acpi_display_type(struct drm_connector *connector) static void intel_didl_outputs(struct drm_i915_private *dev_priv) { struct intel_opregion *opregion = &dev_priv->opregion; - struct pci_dev *pdev = dev_priv->drm.pdev; - struct drm_connector *connector; - acpi_handle handle; - struct acpi_device *acpi_dev, *acpi_cdev, *acpi_video_bus = NULL; - unsigned long long device_id; - acpi_status status; - u32 temp, max_outputs; - int i = 0; - - handle = ACPI_HANDLE(&pdev->dev); - if (!handle || acpi_bus_get_device(handle, &acpi_dev)) - return; - - if (acpi_is_video_device(handle)) - acpi_video_bus = acpi_dev; - else { - list_for_each_entry(acpi_cdev, &acpi_dev->children, node) { - if (acpi_is_video_device(acpi_cdev->handle)) { - acpi_video_bus = acpi_cdev; - break; - } - } - } - - if (!acpi_video_bus) { - DRM_DEBUG_KMS("No ACPI video bus found\n"); - return; - } + struct intel_connector *connector; + int i = 0, max_outputs; + int display_index[16] = {}; /* * In theory, did2, the extended didl, gets added at opregion version @@ -757,46 +732,31 @@ static void intel_didl_outputs(struct drm_i915_private *dev_priv) max_outputs = ARRAY_SIZE(opregion->acpi->didl) + ARRAY_SIZE(opregion->acpi->did2); - list_for_each_entry(acpi_cdev, &acpi_video_bus->children, node) { - if (i >= max_outputs) { - DRM_DEBUG_KMS("More than %u outputs detected via ACPI\n", - max_outputs); - return; - } - status = acpi_evaluate_integer(acpi_cdev->handle, "_ADR", - NULL, &device_id); - if (ACPI_SUCCESS(status)) { - if (!device_id) - goto blind_set; - set_did(opregion, i++, (u32)(device_id & 0x0f0f)); - } + for_each_intel_connector(&dev_priv->drm, connector) { + u32 device_id, type; + + device_id = acpi_display_type(connector); + + /* Use display type specific display index. */ + type = (device_id & ACPI_DISPLAY_TYPE_MASK) + >> ACPI_DISPLAY_TYPE_SHIFT; + device_id |= display_index[type]++ << ACPI_DISPLAY_INDEX_SHIFT; + + connector->acpi_device_id = device_id; + if (i < max_outputs) + set_did(opregion, i, device_id); + i++; } -end: DRM_DEBUG_KMS("%d outputs detected\n", i); + if (i > max_outputs) + DRM_ERROR("More than %d outputs in connector list\n", + max_outputs); + /* If fewer than max outputs, the list must be null terminated */ if (i < max_outputs) set_did(opregion, i, 0); - return; - -blind_set: - i = 0; - list_for_each_entry(connector, - &dev_priv->drm.mode_config.connector_list, head) { - int display_type = acpi_display_type(connector); - - if (i >= max_outputs) { - DRM_DEBUG_KMS("More than %u outputs in connector list\n", - max_outputs); - return; - } - - temp = get_did(opregion, i); - set_did(opregion, i, temp | (1 << 31) | display_type | i); - i++; - } - goto end; } static void intel_setup_cadls(struct drm_i915_private *dev_priv) -- 2.20.1