[PATCH v2 0/5] drm/i915/opregion: proper handling of DIDL and CADL

[PATCH v2 0/5] drm/i915/opregion: proper handling of DIDL and CADL

[Jani Nikula]

This is v2 of [1].

Peter, sorry it took me so long to get back to this. Please confirm your
reviewed-and-tested-by on the series.

Maarten, I'm not confident patch 5/5 is the best way to do this. Any
suggestions?


BR,
Jani.


[1] http://mid.gmane.org/cover.1458731538.git.jani.nikula@intel.com

Jani Nikula (5):
  drm/i915/opregion: add acpi defines from the spec
  drm/i915/opregion: abstract acpi display type getter for a connector
  drm/i915/opregion: handle missing connector types for acpi display
    types
  drm/i915: make i915 the source of acpi device ids for _DOD
  drm/i915/opregion: update cadl based on actually active outputs

 drivers/gpu/drm/i915/i915_drv.h       |   2 +
 drivers/gpu/drm/i915/intel_display.c  |   2 +
 drivers/gpu/drm/i915/intel_drv.h      |   3 +
 drivers/gpu/drm/i915/intel_opregion.c | 235 +++++++++++++++++-----------------
 4 files changed, 126 insertions(+), 116 deletions(-)

-- 
2.1.4

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[PATCH v2 1/5] drm/i915/opregion: add acpi defines from the spec

[Jani Nikula]

It's easier to read the code when the macro names match the spec. Also
add a bunch of missing ones. No functional changes.

Reviewed-and-tested-by: Peter Wu <peter@lekensteyn.nl>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
---
 drivers/gpu/drm/i915/intel_opregion.c | 37 +++++++++++++++++++++++++----------
 1 file changed, 27 insertions(+), 10 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_opregion.c b/drivers/gpu/drm/i915/intel_opregion.c
index f6d8a21d2c49..4ef23e0edc7b 100644
--- a/drivers/gpu/drm/i915/intel_opregion.c
+++ b/drivers/gpu/drm/i915/intel_opregion.c
@@ -232,11 +232,28 @@ struct opregion_asle_ext {
 #define SWSCI_SBCB_POST_VBE_PM		SWSCI_FUNCTION_CODE(SWSCI_SBCB, 19)
 #define SWSCI_SBCB_ENABLE_DISABLE_AUDIO	SWSCI_FUNCTION_CODE(SWSCI_SBCB, 21)
 
-#define ACPI_OTHER_OUTPUT (0<<8)
-#define ACPI_VGA_OUTPUT (1<<8)
-#define ACPI_TV_OUTPUT (2<<8)
-#define ACPI_DIGITAL_OUTPUT (3<<8)
-#define ACPI_LVDS_OUTPUT (4<<8)
+/*
+ * ACPI Specification, Revision 5.0, Appendix B.3.2 _DOD (Enumerate All Devices
+ * Attached to the Display Adapter).
+ */
+#define ACPI_DISPLAY_INDEX_SHIFT		0
+#define ACPI_DISPLAY_INDEX_MASK			(0xf << 0)
+#define ACPI_DISPLAY_PORT_ATTACHMENT_SHIFT	4
+#define ACPI_DISPLAY_PORT_ATTACHMENT_MASK	(0xf << 4)
+#define ACPI_DISPLAY_TYPE_SHIFT			8
+#define ACPI_DISPLAY_TYPE_MASK			(0xf << 8)
+#define ACPI_DISPLAY_TYPE_OTHER			(0 << 8)
+#define ACPI_DISPLAY_TYPE_VGA			(1 << 8)
+#define ACPI_DISPLAY_TYPE_TV			(2 << 8)
+#define ACPI_DISPLAY_TYPE_EXTERNAL_DIGITAL	(3 << 8)
+#define ACPI_DISPLAY_TYPE_INTERNAL_DIGITAL	(4 << 8)
+#define ACPI_VENDOR_SPECIFIC_SHIFT		12
+#define ACPI_VENDOR_SPECIFIC_MASK		(0xf << 12)
+#define ACPI_BIOS_CAN_DETECT			(1 << 16)
+#define ACPI_DEPENDS_ON_VGA			(1 << 17)
+#define ACPI_PIPE_ID_SHIFT			18
+#define ACPI_PIPE_ID_MASK			(7 << 18)
+#define ACPI_DEVICE_ID_SCHEME			(1 << 31)
 
 #define MAX_DSLP	1500
 
@@ -725,7 +742,7 @@ end:
 blind_set:
 	i = 0;
 	list_for_each_entry(connector, &dev_priv->dev->mode_config.connector_list, head) {
-		int output_type = ACPI_OTHER_OUTPUT;
+		int output_type = ACPI_DISPLAY_TYPE_OTHER;
 		if (i >= max_outputs) {
 			DRM_DEBUG_KMS("More than %u outputs in connector list\n",
 				      max_outputs);
@@ -734,23 +751,23 @@ blind_set:
 		switch (connector->connector_type) {
 		case DRM_MODE_CONNECTOR_VGA:
 		case DRM_MODE_CONNECTOR_DVIA:
-			output_type = ACPI_VGA_OUTPUT;
+			output_type = ACPI_DISPLAY_TYPE_VGA;
 			break;
 		case DRM_MODE_CONNECTOR_Composite:
 		case DRM_MODE_CONNECTOR_SVIDEO:
 		case DRM_MODE_CONNECTOR_Component:
 		case DRM_MODE_CONNECTOR_9PinDIN:
-			output_type = ACPI_TV_OUTPUT;
+			output_type = ACPI_DISPLAY_TYPE_TV;
 			break;
 		case DRM_MODE_CONNECTOR_DVII:
 		case DRM_MODE_CONNECTOR_DVID:
 		case DRM_MODE_CONNECTOR_DisplayPort:
 		case DRM_MODE_CONNECTOR_HDMIA:
 		case DRM_MODE_CONNECTOR_HDMIB:
-			output_type = ACPI_DIGITAL_OUTPUT;
+			output_type = ACPI_DISPLAY_TYPE_EXTERNAL_DIGITAL;
 			break;
 		case DRM_MODE_CONNECTOR_LVDS:
-			output_type = ACPI_LVDS_OUTPUT;
+			output_type = ACPI_DISPLAY_TYPE_INTERNAL_DIGITAL;
 			break;
 		}
 		temp = get_did(opregion, i);
-- 
2.1.4

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[PATCH v2 2/5] drm/i915/opregion: abstract acpi display type getter for a connector

[Jani Nikula]

No functional changes.

Reviewed-and-tested-by: Peter Wu <peter@lekensteyn.nl>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
---
 drivers/gpu/drm/i915/intel_opregion.c | 58 ++++++++++++++++++++---------------
 1 file changed, 34 insertions(+), 24 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_opregion.c b/drivers/gpu/drm/i915/intel_opregion.c
index 4ef23e0edc7b..108cfbf65931 100644
--- a/drivers/gpu/drm/i915/intel_opregion.c
+++ b/drivers/gpu/drm/i915/intel_opregion.c
@@ -674,6 +674,36 @@ static void set_did(struct intel_opregion *opregion, int i, u32 val)
 	}
 }
 
+static u32 acpi_display_type(struct drm_connector *connector)
+{
+	u32 display_type = ACPI_DISPLAY_TYPE_OTHER;
+
+	switch (connector->connector_type) {
+	case DRM_MODE_CONNECTOR_VGA:
+	case DRM_MODE_CONNECTOR_DVIA:
+		display_type = ACPI_DISPLAY_TYPE_VGA;
+		break;
+	case DRM_MODE_CONNECTOR_Composite:
+	case DRM_MODE_CONNECTOR_SVIDEO:
+	case DRM_MODE_CONNECTOR_Component:
+	case DRM_MODE_CONNECTOR_9PinDIN:
+		display_type = ACPI_DISPLAY_TYPE_TV;
+		break;
+	case DRM_MODE_CONNECTOR_DVII:
+	case DRM_MODE_CONNECTOR_DVID:
+	case DRM_MODE_CONNECTOR_DisplayPort:
+	case DRM_MODE_CONNECTOR_HDMIA:
+	case DRM_MODE_CONNECTOR_HDMIB:
+		display_type = ACPI_DISPLAY_TYPE_EXTERNAL_DIGITAL;
+		break;
+	case DRM_MODE_CONNECTOR_LVDS:
+		display_type = ACPI_DISPLAY_TYPE_INTERNAL_DIGITAL;
+		break;
+	}
+
+	return display_type;
+}
+
 static void intel_didl_outputs(struct drm_i915_private *dev_priv)
 {
 	struct intel_opregion *opregion = &dev_priv->opregion;
@@ -742,36 +772,16 @@ end:
 blind_set:
 	i = 0;
 	list_for_each_entry(connector, &dev_priv->dev->mode_config.connector_list, head) {
-		int output_type = ACPI_DISPLAY_TYPE_OTHER;
+		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;
 		}
-		switch (connector->connector_type) {
-		case DRM_MODE_CONNECTOR_VGA:
-		case DRM_MODE_CONNECTOR_DVIA:
-			output_type = ACPI_DISPLAY_TYPE_VGA;
-			break;
-		case DRM_MODE_CONNECTOR_Composite:
-		case DRM_MODE_CONNECTOR_SVIDEO:
-		case DRM_MODE_CONNECTOR_Component:
-		case DRM_MODE_CONNECTOR_9PinDIN:
-			output_type = ACPI_DISPLAY_TYPE_TV;
-			break;
-		case DRM_MODE_CONNECTOR_DVII:
-		case DRM_MODE_CONNECTOR_DVID:
-		case DRM_MODE_CONNECTOR_DisplayPort:
-		case DRM_MODE_CONNECTOR_HDMIA:
-		case DRM_MODE_CONNECTOR_HDMIB:
-			output_type = ACPI_DISPLAY_TYPE_EXTERNAL_DIGITAL;
-			break;
-		case DRM_MODE_CONNECTOR_LVDS:
-			output_type = ACPI_DISPLAY_TYPE_INTERNAL_DIGITAL;
-			break;
-		}
+
 		temp = get_did(opregion, i);
-		set_did(opregion, i, temp | (1 << 31) | output_type | i);
+		set_did(opregion, i, temp | (1 << 31) | display_type | i);
 		i++;
 	}
 	goto end;
-- 
2.1.4

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[PATCH v2 3/5] drm/i915/opregion: handle missing connector types for acpi display types

[Jani Nikula]

Most notably eDP, DSI, and TV. Add MISSING_CASE handling so we won't
miss this in the future.

Reviewed-and-tested-by: Peter Wu <peter@lekensteyn.nl>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
---
 drivers/gpu/drm/i915/intel_opregion.c | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/intel_opregion.c b/drivers/gpu/drm/i915/intel_opregion.c
index 108cfbf65931..82e687dd09c3 100644
--- a/drivers/gpu/drm/i915/intel_opregion.c
+++ b/drivers/gpu/drm/i915/intel_opregion.c
@@ -676,7 +676,7 @@ static void set_did(struct intel_opregion *opregion, int i, u32 val)
 
 static u32 acpi_display_type(struct drm_connector *connector)
 {
-	u32 display_type = ACPI_DISPLAY_TYPE_OTHER;
+	u32 display_type;
 
 	switch (connector->connector_type) {
 	case DRM_MODE_CONNECTOR_VGA:
@@ -687,6 +687,7 @@ static u32 acpi_display_type(struct drm_connector *connector)
 	case DRM_MODE_CONNECTOR_SVIDEO:
 	case DRM_MODE_CONNECTOR_Component:
 	case DRM_MODE_CONNECTOR_9PinDIN:
+	case DRM_MODE_CONNECTOR_TV:
 		display_type = ACPI_DISPLAY_TYPE_TV;
 		break;
 	case DRM_MODE_CONNECTOR_DVII:
@@ -697,8 +698,18 @@ static u32 acpi_display_type(struct drm_connector *connector)
 		display_type = ACPI_DISPLAY_TYPE_EXTERNAL_DIGITAL;
 		break;
 	case DRM_MODE_CONNECTOR_LVDS:
+	case DRM_MODE_CONNECTOR_eDP:
+	case DRM_MODE_CONNECTOR_DSI:
 		display_type = ACPI_DISPLAY_TYPE_INTERNAL_DIGITAL;
 		break;
+	case DRM_MODE_CONNECTOR_Unknown:
+	case DRM_MODE_CONNECTOR_VIRTUAL:
+		display_type = ACPI_DISPLAY_TYPE_OTHER;
+		break;
+	default:
+		MISSING_CASE(connector->connector_type);
+		display_type = ACPI_DISPLAY_TYPE_OTHER;
+		break;
 	}
 
 	return display_type;
-- 
2.1.4

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[PATCH v2 4/5] drm/i915: make i915 the source of acpi device ids for _DOD

[Jani Nikula]

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 <rui.zhang@intel.com>
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.

v2: do not set ACPI_DEVICE_ID_SCHEME in the device id (Peter Wu)

Reviewed-and-tested-by: Peter Wu <peter@lekensteyn.nl>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
---
 drivers/gpu/drm/i915/intel_drv.h      |  3 ++
 drivers/gpu/drm/i915/intel_opregion.c | 87 ++++++++++-------------------------
 2 files changed, 27 insertions(+), 63 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 270da8de0acf..86c3926e970b 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -238,6 +238,9 @@ 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 82e687dd09c3..632f0178c2b0 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->dev->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
@@ -757,45 +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->dev, 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->dev->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)
-- 
2.1.4

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[PATCH v2 5/5] drm/i915/opregion: update cadl based on actually active outputs

[Jani Nikula]

Previously we've just shoved the first eight devices in DIDL to CADL
(list of active outputs). Some of the active outputs may have been left
outside of CADL. The problem is, some BIOS implementations prevent
laptop brightness hotkey propagation if the flat panel is not active.

Now that we have connector to acpi device id mapping covered, we can
update CADL based on which outputs are actually active.

Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-and-tested-by: Peter Wu <peter@lekensteyn.nl>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
---
 drivers/gpu/drm/i915/i915_drv.h       |  2 +
 drivers/gpu/drm/i915/intel_display.c  |  2 +
 drivers/gpu/drm/i915/intel_opregion.c | 70 ++++++++++++++++++-----------------
 3 files changed, 41 insertions(+), 33 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 53d9e3fab489..148c47ae38f3 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -3646,6 +3646,7 @@ extern int intel_opregion_notify_encoder(struct intel_encoder *intel_encoder,
 extern int intel_opregion_notify_adapter(struct drm_i915_private *dev_priv,
 					 pci_power_t state);
 extern int intel_opregion_get_panel_type(struct drm_i915_private *dev_priv);
+extern void intel_opregion_update_cadl(struct drm_i915_private *dev_priv);
 #else
 static inline int intel_opregion_setup(struct drm_i915_private *dev) { return 0; }
 static inline void intel_opregion_init(struct drm_i915_private *dev) { }
@@ -3667,6 +3668,7 @@ static inline int intel_opregion_get_panel_type(struct drm_i915_private *dev)
 {
 	return -ENODEV;
 }
+static inline void intel_opregion_update_cadl(struct drm_i915_private *dev_priv) { return; }
 #endif
 
 /* intel_acpi.c */
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 801e4c17dd8d..7d6d6746a22a 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -13833,6 +13833,8 @@ static int intel_atomic_commit(struct drm_device *dev,
 
 	drm_atomic_state_free(state);
 
+	intel_opregion_update_cadl(dev);
+
 	/* As one of the primary mmio accessors, KMS has a high likelihood
 	 * of triggering bugs in unclaimed access. After we finish
 	 * modesetting, see if an error has been flagged, and if so
diff --git a/drivers/gpu/drm/i915/intel_opregion.c b/drivers/gpu/drm/i915/intel_opregion.c
index 632f0178c2b0..8b3f7e6ae4bb 100644
--- a/drivers/gpu/drm/i915/intel_opregion.c
+++ b/drivers/gpu/drm/i915/intel_opregion.c
@@ -642,24 +642,6 @@ static struct notifier_block intel_opregion_notifier = {
  * (version 3)
  */
 
-static u32 get_did(struct intel_opregion *opregion, int i)
-{
-	u32 did;
-
-	if (i < ARRAY_SIZE(opregion->acpi->didl)) {
-		did = opregion->acpi->didl[i];
-	} else {
-		i -= ARRAY_SIZE(opregion->acpi->didl);
-
-		if (WARN_ON(i >= ARRAY_SIZE(opregion->acpi->did2)))
-			return 0;
-
-		did = opregion->acpi->did2[i];
-	}
-
-	return did;
-}
-
 static void set_did(struct intel_opregion *opregion, int i, u32 val)
 {
 	if (i < ARRAY_SIZE(opregion->acpi->didl)) {
@@ -674,6 +656,14 @@ static void set_did(struct intel_opregion *opregion, int i, u32 val)
 	}
 }
 
+static void set_cad(struct intel_opregion *opregion, int i, u32 val)
+{
+	if (WARN_ON(i >= ARRAY_SIZE(opregion->acpi->cadl)))
+		return;
+
+	opregion->acpi->cadl[i] = val;
+}
+
 static u32 acpi_display_type(struct intel_connector *connector)
 {
 	u32 display_type;
@@ -759,22 +749,36 @@ static void intel_didl_outputs(struct drm_i915_private *dev_priv)
 		set_did(opregion, i, 0);
 }
 
-static void intel_setup_cadls(struct drm_i915_private *dev_priv)
+/* Update CADL to reflect active outputs. */
+void intel_opregion_update_cadl(struct drm_i915_private *dev_priv)
 {
 	struct intel_opregion *opregion = &dev_priv->opregion;
-	int i = 0;
-	u32 disp_id;
-
-	/* Initialize the CADL field by duplicating the DIDL values.
-	 * Technically, this is not always correct as display outputs may exist,
-	 * but not active. This initialization is necessary for some Clevo
-	 * laptops that check this field before processing the brightness and
-	 * display switching hotkeys. Just like DIDL, CADL is NULL-terminated if
-	 * there are less than eight devices. */
-	do {
-		disp_id = get_did(opregion, i);
-		opregion->acpi->cadl[i] = disp_id;
-	} while (++i < 8 && disp_id != 0);
+	struct intel_crtc *crtc;
+	int i = 0, max_active = ARRAY_SIZE(opregion->acpi->cadl);
+
+	for_each_intel_crtc(dev_priv->dev, crtc) {
+		struct intel_encoder *encoder;
+
+		if (!crtc->active)
+			continue;
+
+		for_each_encoder_on_crtc(dev_priv->dev, &crtc->base, encoder) {
+			struct intel_connector *connector;
+
+			for_each_connector_on_encoder(dev_priv->dev, &encoder->base, connector) {
+				if (i >= max_active) {
+					DRM_DEBUG_KMS("too many outputs active\n");
+					return;
+				}
+
+				set_cad(opregion, i++, connector->acpi_device_id);
+			}
+		}
+	}
+
+	/* If fewer than max active outputs, the list must be null terminated */
+	if (i < max_active)
+		set_cad(opregion, i, 0);
 }
 
 void intel_opregion_register(struct drm_i915_private *dev_priv)
@@ -786,7 +790,7 @@ void intel_opregion_register(struct drm_i915_private *dev_priv)
 
 	if (opregion->acpi) {
 		intel_didl_outputs(dev_priv);
-		intel_setup_cadls(dev_priv);
+		intel_opregion_update_cadl(dev_priv);
 
 		/* Notify BIOS we are ready to handle ACPI video ext notifs.
 		 * Right now, all the events are handled by the ACPI video module.
-- 
2.1.4

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✗ Ro.CI.BAT: failure for drm/i915/opregion: proper handling of DIDL and CADL (rev2)

[Patchwork]

== Series Details ==

Series: drm/i915/opregion: proper handling of DIDL and CADL (rev2)
URL   : https://patchwork.freedesktop.org/series/4783/
State : failure

== Summary ==

  CC [M]  drivers/gpu/drm/i915/intel_panel.o
  LD      drivers/usb/storage/usb-storage.o
  LD      drivers/usb/storage/built-in.o
  LD      drivers/tty/serial/8250/built-in.o
  LD      drivers/tty/vt/built-in.o
  CC [M]  drivers/gpu/drm/i915/i915_vgpu.o
  LD      drivers/tty/serial/built-in.o
  CC [M]  drivers/gpu/drm/i915/i915_dma.o
  LD      drivers/usb/built-in.o
  LD      drivers/tty/built-in.o
drivers/gpu/drm/i915/intel_display.c: In function ‘intel_atomic_commit’:
drivers/gpu/drm/i915/intel_display.c:13836:29: error: passing argument 1 of ‘intel_opregion_update_cadl’ from incompatible pointer type [-Werror=incompatible-pointer-types]
  intel_opregion_update_cadl(dev);
                             ^
In file included from drivers/gpu/drm/i915/intel_drv.h:32:0,
                 from drivers/gpu/drm/i915/intel_display.c:36:
drivers/gpu/drm/i915/i915_drv.h:3666:13: note: expected ‘struct drm_i915_private *’ but argument is of type ‘struct drm_device *’
 extern void intel_opregion_update_cadl(struct drm_i915_private *dev_priv);
             ^
cc1: some warnings being treated as errors
scripts/Makefile.build:289: recipe for target 'drivers/gpu/drm/i915/intel_display.o' failed
make[4]: *** [drivers/gpu/drm/i915/intel_display.o] Error 1
scripts/Makefile.build:440: recipe for target 'drivers/gpu/drm/i915' failed
make[3]: *** [drivers/gpu/drm/i915] Error 2
scripts/Makefile.build:440: recipe for target 'drivers/gpu/drm' failed
make[2]: *** [drivers/gpu/drm] Error 2
scripts/Makefile.build:440: recipe for target 'drivers/gpu' failed
make[1]: *** [drivers/gpu] Error 2
Makefile:985: recipe for target 'drivers' failed
make: *** [drivers] Error 2

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Re: [PATCH v2 5/5] drm/i915/opregion: update cadl based on actually active outputs

[kbuild test robot]

[-- Attachment #1: Type: text/plain, Size: 2025 bytes --]

Hi,

[auto build test ERROR on drm-intel/for-linux-next]
[also build test ERROR on next-20160609]
[cannot apply to v4.7-rc3]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Jani-Nikula/drm-i915-opregion-proper-handling-of-DIDL-and-CADL/20160613-173347
base:   git://anongit.freedesktop.org/drm-intel for-linux-next
config: x86_64-allmodconfig (attached as .config)
compiler: gcc-6 (Debian 6.1.1-1) 6.1.1 20160430
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   drivers/gpu/drm/i915/intel_display.c: In function 'intel_atomic_commit':
>> drivers/gpu/drm/i915/intel_display.c:13836:29: error: passing argument 1 of 'intel_opregion_update_cadl' from incompatible pointer type [-Werror=incompatible-pointer-types]
     intel_opregion_update_cadl(dev);
                                ^~~
   In file included from drivers/gpu/drm/i915/intel_drv.h:32:0,
                    from drivers/gpu/drm/i915/intel_display.c:36:
   drivers/gpu/drm/i915/i915_drv.h:3666:13: note: expected 'struct drm_i915_private *' but argument is of type 'struct drm_device *'
    extern void intel_opregion_update_cadl(struct drm_i915_private *dev_priv);
                ^~~~~~~~~~~~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors

vim +/intel_opregion_update_cadl +13836 drivers/gpu/drm/i915/intel_display.c

 13830		mutex_lock(&dev->struct_mutex);
 13831		drm_atomic_helper_cleanup_planes(dev, state);
 13832		mutex_unlock(&dev->struct_mutex);
 13833	
 13834		drm_atomic_state_free(state);
 13835	
 13836		intel_opregion_update_cadl(dev);
 13837	
 13838		/* As one of the primary mmio accessors, KMS has a high likelihood
 13839		 * of triggering bugs in unclaimed access. After we finish

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

[-- Attachment #2: .config.gz --]
[-- Type: application/octet-stream, Size: 54751 bytes --]

[-- Attachment #3: Type: text/plain, Size: 160 bytes --]

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[PATCH v3] drm/i915/opregion: update cadl based on actually active outputs

[Jani Nikula]

Previously we've just shoved the first eight devices in DIDL to CADL
(list of active outputs). Some of the active outputs may have been left
outside of CADL. The problem is, some BIOS implementations prevent
laptop brightness hotkey propagation if the flat panel is not active.

Now that we have connector to acpi device id mapping covered, we can
update CADL based on which outputs are actually active.

v3: actually git add the dev->dev_priv change.

Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-and-tested-by: Peter Wu <peter@lekensteyn.nl>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
---
 drivers/gpu/drm/i915/i915_drv.h       |  2 +
 drivers/gpu/drm/i915/intel_display.c  |  2 +
 drivers/gpu/drm/i915/intel_opregion.c | 70 ++++++++++++++++++-----------------
 3 files changed, 41 insertions(+), 33 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 53d9e3fab489..148c47ae38f3 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -3646,6 +3646,7 @@ extern int intel_opregion_notify_encoder(struct intel_encoder *intel_encoder,
 extern int intel_opregion_notify_adapter(struct drm_i915_private *dev_priv,
 					 pci_power_t state);
 extern int intel_opregion_get_panel_type(struct drm_i915_private *dev_priv);
+extern void intel_opregion_update_cadl(struct drm_i915_private *dev_priv);
 #else
 static inline int intel_opregion_setup(struct drm_i915_private *dev) { return 0; }
 static inline void intel_opregion_init(struct drm_i915_private *dev) { }
@@ -3667,6 +3668,7 @@ static inline int intel_opregion_get_panel_type(struct drm_i915_private *dev)
 {
 	return -ENODEV;
 }
+static inline void intel_opregion_update_cadl(struct drm_i915_private *dev_priv) { return; }
 #endif
 
 /* intel_acpi.c */
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 801e4c17dd8d..c8fd85baf93d 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -13833,6 +13833,8 @@ static int intel_atomic_commit(struct drm_device *dev,
 
 	drm_atomic_state_free(state);
 
+	intel_opregion_update_cadl(dev_priv);
+
 	/* As one of the primary mmio accessors, KMS has a high likelihood
 	 * of triggering bugs in unclaimed access. After we finish
 	 * modesetting, see if an error has been flagged, and if so
diff --git a/drivers/gpu/drm/i915/intel_opregion.c b/drivers/gpu/drm/i915/intel_opregion.c
index 632f0178c2b0..8b3f7e6ae4bb 100644
--- a/drivers/gpu/drm/i915/intel_opregion.c
+++ b/drivers/gpu/drm/i915/intel_opregion.c
@@ -642,24 +642,6 @@ static struct notifier_block intel_opregion_notifier = {
  * (version 3)
  */
 
-static u32 get_did(struct intel_opregion *opregion, int i)
-{
-	u32 did;
-
-	if (i < ARRAY_SIZE(opregion->acpi->didl)) {
-		did = opregion->acpi->didl[i];
-	} else {
-		i -= ARRAY_SIZE(opregion->acpi->didl);
-
-		if (WARN_ON(i >= ARRAY_SIZE(opregion->acpi->did2)))
-			return 0;
-
-		did = opregion->acpi->did2[i];
-	}
-
-	return did;
-}
-
 static void set_did(struct intel_opregion *opregion, int i, u32 val)
 {
 	if (i < ARRAY_SIZE(opregion->acpi->didl)) {
@@ -674,6 +656,14 @@ static void set_did(struct intel_opregion *opregion, int i, u32 val)
 	}
 }
 
+static void set_cad(struct intel_opregion *opregion, int i, u32 val)
+{
+	if (WARN_ON(i >= ARRAY_SIZE(opregion->acpi->cadl)))
+		return;
+
+	opregion->acpi->cadl[i] = val;
+}
+
 static u32 acpi_display_type(struct intel_connector *connector)
 {
 	u32 display_type;
@@ -759,22 +749,36 @@ static void intel_didl_outputs(struct drm_i915_private *dev_priv)
 		set_did(opregion, i, 0);
 }
 
-static void intel_setup_cadls(struct drm_i915_private *dev_priv)
+/* Update CADL to reflect active outputs. */
+void intel_opregion_update_cadl(struct drm_i915_private *dev_priv)
 {
 	struct intel_opregion *opregion = &dev_priv->opregion;
-	int i = 0;
-	u32 disp_id;
-
-	/* Initialize the CADL field by duplicating the DIDL values.
-	 * Technically, this is not always correct as display outputs may exist,
-	 * but not active. This initialization is necessary for some Clevo
-	 * laptops that check this field before processing the brightness and
-	 * display switching hotkeys. Just like DIDL, CADL is NULL-terminated if
-	 * there are less than eight devices. */
-	do {
-		disp_id = get_did(opregion, i);
-		opregion->acpi->cadl[i] = disp_id;
-	} while (++i < 8 && disp_id != 0);
+	struct intel_crtc *crtc;
+	int i = 0, max_active = ARRAY_SIZE(opregion->acpi->cadl);
+
+	for_each_intel_crtc(dev_priv->dev, crtc) {
+		struct intel_encoder *encoder;
+
+		if (!crtc->active)
+			continue;
+
+		for_each_encoder_on_crtc(dev_priv->dev, &crtc->base, encoder) {
+			struct intel_connector *connector;
+
+			for_each_connector_on_encoder(dev_priv->dev, &encoder->base, connector) {
+				if (i >= max_active) {
+					DRM_DEBUG_KMS("too many outputs active\n");
+					return;
+				}
+
+				set_cad(opregion, i++, connector->acpi_device_id);
+			}
+		}
+	}
+
+	/* If fewer than max active outputs, the list must be null terminated */
+	if (i < max_active)
+		set_cad(opregion, i, 0);
 }
 
 void intel_opregion_register(struct drm_i915_private *dev_priv)
@@ -786,7 +790,7 @@ void intel_opregion_register(struct drm_i915_private *dev_priv)
 
 	if (opregion->acpi) {
 		intel_didl_outputs(dev_priv);
-		intel_setup_cadls(dev_priv);
+		intel_opregion_update_cadl(dev_priv);
 
 		/* Notify BIOS we are ready to handle ACPI video ext notifs.
 		 * Right now, all the events are handled by the ACPI video module.
-- 
2.1.4

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Re: [PATCH v3] drm/i915/opregion: update cadl based on actually active outputs

[Maarten Lankhorst]

Op 13-06-16 om 12:00 schreef Jani Nikula:
> Previously we've just shoved the first eight devices in DIDL to CADL
> (list of active outputs). Some of the active outputs may have been left
> outside of CADL. The problem is, some BIOS implementations prevent
> laptop brightness hotkey propagation if the flat panel is not active.
>
> Now that we have connector to acpi device id mapping covered, we can
> update CADL based on which outputs are actually active.
>
> v3: actually git add the dev->dev_priv change.
>
Can CADL be set before the crtc's are updated?

It seems to me it should be set after intel_shared_dpll_commit,
since that's when we update all sw state. And put behind a if (intel_state->modeset),
it's not allowed to walk the connector list otherwise. We get away with it now
because we always take mode_config.mutex.
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Re: [PATCH v2 5/5] drm/i915/opregion: update cadl based on actually active outputs

[kbuild test robot]

[-- Attachment #1: Type: text/plain, Size: 2456 bytes --]

Hi,

[auto build test WARNING on drm-intel/for-linux-next]
[also build test WARNING on next-20160609]
[cannot apply to v4.7-rc3]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Jani-Nikula/drm-i915-opregion-proper-handling-of-DIDL-and-CADL/20160613-173347
base:   git://anongit.freedesktop.org/drm-intel for-linux-next
config: x86_64-rhel (attached as .config)
compiler: gcc-4.9 (Debian 4.9.3-14) 4.9.3
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All warnings (new ones prefixed by >>):

   drivers/gpu/drm/i915/intel_display.c: In function 'intel_atomic_commit':
>> drivers/gpu/drm/i915/intel_display.c:13836:29: warning: passing argument 1 of 'intel_opregion_update_cadl' from incompatible pointer type
     intel_opregion_update_cadl(dev);
                                ^
   In file included from drivers/gpu/drm/i915/intel_drv.h:32:0,
                    from drivers/gpu/drm/i915/intel_display.c:36:
   drivers/gpu/drm/i915/i915_drv.h:3666:13: note: expected 'struct drm_i915_private *' but argument is of type 'struct drm_device *'
    extern void intel_opregion_update_cadl(struct drm_i915_private *dev_priv);
                ^

vim +/intel_opregion_update_cadl +13836 drivers/gpu/drm/i915/intel_display.c

 13820	
 13821			if (put_domains[i])
 13822				modeset_put_power_domains(dev_priv, put_domains[i]);
 13823	
 13824			intel_modeset_verify_crtc(crtc, old_crtc_state, crtc->state);
 13825		}
 13826	
 13827		if (intel_state->modeset)
 13828			intel_display_power_put(dev_priv, POWER_DOMAIN_MODESET);
 13829	
 13830		mutex_lock(&dev->struct_mutex);
 13831		drm_atomic_helper_cleanup_planes(dev, state);
 13832		mutex_unlock(&dev->struct_mutex);
 13833	
 13834		drm_atomic_state_free(state);
 13835	
 13836		intel_opregion_update_cadl(dev);
 13837	
 13838		/* As one of the primary mmio accessors, KMS has a high likelihood
 13839		 * of triggering bugs in unclaimed access. After we finish
 13840		 * modesetting, see if an error has been flagged, and if so
 13841		 * enable debugging for the next modeset - and hope we catch
 13842		 * the culprit.
 13843		 *
 13844		 * XXX note that we assume display power is on at this point.

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

[-- Attachment #2: .config.gz --]
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[-- Attachment #3: Type: text/plain, Size: 160 bytes --]

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✗ Ro.CI.BAT: failure for drm/i915/opregion: proper handling of DIDL and CADL (rev3)

[Patchwork]

== Series Details ==

Series: drm/i915/opregion: proper handling of DIDL and CADL (rev3)
URL   : https://patchwork.freedesktop.org/series/4783/
State : failure

== Summary ==

Series 4783v3 drm/i915/opregion: proper handling of DIDL and CADL
http://patchwork.freedesktop.org/api/1.0/series/4783/revisions/3/mbox

Test gem_exec_suspend:
        Subgroup basic-s3:
                pass       -> DMESG-WARN (ro-bdw-i7-5557U)
Test kms_pipe_crc_basic:
        Subgroup suspend-read-crc-pipe-a:
                dmesg-warn -> SKIP       (ro-bdw-i5-5250u)
        Subgroup suspend-read-crc-pipe-c:
                skip       -> DMESG-WARN (ro-bdw-i5-5250u)
Test pm_rpm:
        Subgroup basic-rte:
                pass       -> FAIL       (ro-skl3-i5-6260u)

fi-skl-i7-6700k  total:213  pass:188  dwarn:0   dfail:0   fail:0   skip:25 
ro-bdw-i5-5250u  total:213  pass:197  dwarn:3   dfail:0   fail:0   skip:13 
ro-bdw-i7-5557U  total:213  pass:197  dwarn:1   dfail:0   fail:0   skip:15 
ro-bdw-i7-5600u  total:213  pass:185  dwarn:0   dfail:0   fail:0   skip:28 
ro-bsw-n3050     total:213  pass:172  dwarn:0   dfail:0   fail:2   skip:39 
ro-byt-n2820     total:213  pass:173  dwarn:0   dfail:0   fail:3   skip:37 
ro-hsw-i3-4010u  total:213  pass:190  dwarn:0   dfail:0   fail:0   skip:23 
ro-hsw-i7-4770r  total:213  pass:190  dwarn:0   dfail:0   fail:0   skip:23 
ro-ilk-i7-620lm  total:213  pass:150  dwarn:0   dfail:0   fail:1   skip:62 
ro-ilk1-i5-650   total:208  pass:150  dwarn:0   dfail:0   fail:1   skip:57 
ro-skl3-i5-6260u total:213  pass:200  dwarn:1   dfail:0   fail:1   skip:11 
ro-snb-i7-2620M  total:213  pass:174  dwarn:0   dfail:0   fail:1   skip:38 
fi-bdw-i7-5557u failed to connect after reboot
fi-hsw-i7-4770k failed to connect after reboot
fi-skl-i5-6260u failed to connect after reboot
fi-snb-i7-2600 failed to connect after reboot
ro-ivb2-i7-3770 failed to connect after reboot
ro-ivb-i7-3770 failed to connect after reboot

Results at /archive/results/CI_IGT_test/RO_Patchwork_1169/

5aacd93 drm-intel-nightly: 2016y-06m-13d-09h-05m-21s UTC integration manifest
228155a drm/i915/opregion: update cadl based on actually active outputs
2e7b211 drm/i915: make i915 the source of acpi device ids for _DOD
4a92722 drm/i915/opregion: handle missing connector types for acpi display types
70f121b drm/i915/opregion: abstract acpi display type getter for a connector
8a829b0 drm/i915/opregion: add acpi defines from the spec

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Re: [PATCH v2 3/5] drm/i915/opregion: handle missing connector types for acpi display types

[Jani Nikula]

On Mon, 13 Jun 2016, Jani Nikula <jani.nikula@intel.com> wrote:
> Most notably eDP, DSI, and TV. Add MISSING_CASE handling so we won't
> miss this in the future.
>
> Reviewed-and-tested-by: Peter Wu <peter@lekensteyn.nl>
> Signed-off-by: Jani Nikula <jani.nikula@intel.com>

Pushed up to and including this patch to drm-intel-next-queued, as
they're fairly benign changes. Patches 4 and 5 should probably go in
hand-in-hand.

BR,
Jani.


> ---
>  drivers/gpu/drm/i915/intel_opregion.c | 13 ++++++++++++-
>  1 file changed, 12 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_opregion.c b/drivers/gpu/drm/i915/intel_opregion.c
> index 108cfbf65931..82e687dd09c3 100644
> --- a/drivers/gpu/drm/i915/intel_opregion.c
> +++ b/drivers/gpu/drm/i915/intel_opregion.c
> @@ -676,7 +676,7 @@ static void set_did(struct intel_opregion *opregion, int i, u32 val)
>  
>  static u32 acpi_display_type(struct drm_connector *connector)
>  {
> -	u32 display_type = ACPI_DISPLAY_TYPE_OTHER;
> +	u32 display_type;
>  
>  	switch (connector->connector_type) {
>  	case DRM_MODE_CONNECTOR_VGA:
> @@ -687,6 +687,7 @@ static u32 acpi_display_type(struct drm_connector *connector)
>  	case DRM_MODE_CONNECTOR_SVIDEO:
>  	case DRM_MODE_CONNECTOR_Component:
>  	case DRM_MODE_CONNECTOR_9PinDIN:
> +	case DRM_MODE_CONNECTOR_TV:
>  		display_type = ACPI_DISPLAY_TYPE_TV;
>  		break;
>  	case DRM_MODE_CONNECTOR_DVII:
> @@ -697,8 +698,18 @@ static u32 acpi_display_type(struct drm_connector *connector)
>  		display_type = ACPI_DISPLAY_TYPE_EXTERNAL_DIGITAL;
>  		break;
>  	case DRM_MODE_CONNECTOR_LVDS:
> +	case DRM_MODE_CONNECTOR_eDP:
> +	case DRM_MODE_CONNECTOR_DSI:
>  		display_type = ACPI_DISPLAY_TYPE_INTERNAL_DIGITAL;
>  		break;
> +	case DRM_MODE_CONNECTOR_Unknown:
> +	case DRM_MODE_CONNECTOR_VIRTUAL:
> +		display_type = ACPI_DISPLAY_TYPE_OTHER;
> +		break;
> +	default:
> +		MISSING_CASE(connector->connector_type);
> +		display_type = ACPI_DISPLAY_TYPE_OTHER;
> +		break;
>  	}
>  
>  	return display_type;

-- 
Jani Nikula, Intel Open Source Technology Center
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