drm/i915: disable LVDS downclock by default

[net-next-2.6.git] / drivers / gpu / drm / i915 / intel_lvds.c

diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c
index 3118ce274e67a6f2723e21a6c3bd873c160405d1..aa74e59bec61b0f19c40817fce49bde445d461ae 100644 (file)
--- a/drivers/gpu/drm/i915/intel_lvds.c
+++ b/drivers/gpu/drm/i915/intel_lvds.c
@@ -601,6 +601,20 @@ static void intel_lvds_mode_set(struct drm_encoder *encoder,
 
 /* Some lid devices report incorrect lid status, assume they're connected */
 static const struct dmi_system_id bad_lid_status[] = {
+       {
+               .ident = "Compaq nx9020",
+               .matches = {
+                       DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
+                       DMI_MATCH(DMI_BOARD_NAME, "3084"),
+               },
+       },
+       {
+               .ident = "Samsung SX20S",
+               .matches = {
+                       DMI_MATCH(DMI_SYS_VENDOR, "Phoenix Technologies LTD"),
+                       DMI_MATCH(DMI_BOARD_NAME, "SX20S"),
+               },
+       },
        {
                .ident = "Aspire One",
                .matches = {
@@ -608,6 +622,13 @@ static const struct dmi_system_id bad_lid_status[] = {
                        DMI_MATCH(DMI_PRODUCT_NAME, "Aspire one"),
                },
        },
+       {
+               .ident = "PC-81005",
+               .matches = {
+                       DMI_MATCH(DMI_SYS_VENDOR, "MALATA"),
+                       DMI_MATCH(DMI_PRODUCT_NAME, "PC-81005"),
+               },
+       },
        { }
 };
 
@@ -679,7 +700,14 @@ static int intel_lid_notify(struct notifier_block *nb, unsigned long val,
        struct drm_i915_private *dev_priv =
                container_of(nb, struct drm_i915_private, lid_notifier);
        struct drm_device *dev = dev_priv->dev;
+       struct drm_connector *connector = dev_priv->int_lvds_connector;
 
+       /*
+        * check and update the status of LVDS connector after receiving
+        * the LID nofication event.
+        */
+       if (connector)
+               connector->status = connector->funcs->detect(connector);
        if (!acpi_lid_open()) {
                dev_priv->modeset_on_lid = 1;
                return NOTIFY_OK;
@@ -854,65 +882,6 @@ static const struct dmi_system_id intel_no_lvds[] = {
        { }     /* terminating entry */
 };
 
-#ifdef CONFIG_ACPI
-/*
- * check_lid_device -- check whether @handle is an ACPI LID device.
- * @handle: ACPI device handle
- * @level : depth in the ACPI namespace tree
- * @context: the number of LID device when we find the device
- * @rv: a return value to fill if desired (Not use)
- */
-static acpi_status
-check_lid_device(acpi_handle handle, u32 level, void *context,
-                       void **return_value)
-{
-       struct acpi_device *acpi_dev;
-       int *lid_present = context;
-
-       acpi_dev = NULL;
-       /* Get the acpi device for device handle */
-       if (acpi_bus_get_device(handle, &acpi_dev) || !acpi_dev) {
-               /* If there is no ACPI device for handle, return */
-               return AE_OK;
-       }
-
-       if (!strncmp(acpi_device_hid(acpi_dev), "PNP0C0D", 7))
-               *lid_present = 1;
-
-       return AE_OK;
-}
-
-/**
- * check whether there exists the ACPI LID device by enumerating the ACPI
- * device tree.
- */
-static int intel_lid_present(void)
-{
-       int lid_present = 0;
-
-       if (acpi_disabled) {
-               /* If ACPI is disabled, there is no ACPI device tree to
-                * check, so assume the LID device would have been present.
-                */
-               return 1;
-       }
-
-       acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
-                               ACPI_UINT32_MAX,
-                               check_lid_device, NULL, &lid_present, NULL);
-
-       return lid_present;
-}
-#else
-static int intel_lid_present(void)
-{
-       /* In the absence of ACPI built in, assume that the LID device would
-        * have been present.
-        */
-       return 1;
-}
-#endif
-
 /**
  * intel_find_lvds_downclock - find the reduced downclock for LVDS in EDID
  * @dev: drm device
@@ -957,7 +926,8 @@ static void intel_find_lvds_downclock(struct drm_device *dev,
                }
        }
        mutex_unlock(&dev->mode_config.mutex);
-       if (temp_downclock < panel_fixed_mode->clock) {
+       if (temp_downclock < panel_fixed_mode->clock &&
+           i915_lvds_downclock) {
                /* We found the downclock for LVDS. */
                dev_priv->lvds_downclock_avail = 1;
                dev_priv->lvds_downclock = temp_downclock;
@@ -1031,12 +1001,8 @@ void intel_lvds_init(struct drm_device *dev)
        if (dmi_check_system(intel_no_lvds))
                return;
 
-       /*
-        * Assume LVDS is present if there's an ACPI lid device or if the
-        * device is present in the VBT.
-        */
-       if (!lvds_is_present_in_vbt(dev) && !intel_lid_present()) {
-               DRM_DEBUG_KMS("LVDS is not present in VBT and no lid detected\n");
+       if (!lvds_is_present_in_vbt(dev)) {
+               DRM_DEBUG_KMS("LVDS is not present in VBT\n");
                return;
        }
 
@@ -1180,6 +1146,8 @@ out:
                DRM_DEBUG_KMS("lid notifier registration failed\n");
                dev_priv->lid_notifier.notifier_call = NULL;
        }
+       /* keep the LVDS connector */
+       dev_priv->int_lvds_connector = connector;
        drm_sysfs_connector_add(connector);
        return;