From c1c7af60892070e4b82ad63bbfb95ae745056de0 Mon Sep 17 00:00:00 2001 From: Jesse Barnes Date: Thu, 10 Sep 2009 15:28:03 -0700 Subject: drm/i915: force mode set at lid open time Some laptop platforms will disable pipes and/or planes at lid close time and not restore them when the lid is opened again. So catch the lid event, and if the lid was opened, force a mode restore. Fixes fdo bug #21230. Acked-by: Matthew Garrett Signed-off-by: Jesse Barnes Signed-off-by: Eric Anholt --- drivers/gpu/drm/i915/intel_lvds.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) (limited to '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 dafc0da1c25..e190ff792bf 100644 --- a/drivers/gpu/drm/i915/intel_lvds.c +++ b/drivers/gpu/drm/i915/intel_lvds.c @@ -27,6 +27,7 @@ * Jesse Barnes */ +#include #include #include #include "drmP.h" @@ -632,6 +633,19 @@ static int intel_lvds_get_modes(struct drm_connector *connector) return 0; } +static int intel_lid_notify(struct notifier_block *nb, unsigned long val, + void *unused) +{ + struct drm_i915_private *dev_priv = + container_of(nb, struct drm_i915_private, lid_notifier); + struct drm_device *dev = dev_priv->dev; + + if (acpi_lid_open()) + drm_helper_resume_force_mode(dev); + + return NOTIFY_OK; +} + /** * intel_lvds_destroy - unregister and free LVDS structures * @connector: connector to free @@ -641,10 +655,14 @@ static int intel_lvds_get_modes(struct drm_connector *connector) */ static void intel_lvds_destroy(struct drm_connector *connector) { + struct drm_device *dev = connector->dev; struct intel_output *intel_output = to_intel_output(connector); + struct drm_i915_private *dev_priv = dev->dev_private; if (intel_output->ddc_bus) intel_i2c_destroy(intel_output->ddc_bus); + if (dev_priv->lid_notifier.notifier_call) + acpi_lid_notifier_unregister(&dev_priv->lid_notifier); drm_sysfs_connector_remove(connector); drm_connector_cleanup(connector); kfree(connector); @@ -1011,6 +1029,11 @@ out: pwm |= PWM_PCH_ENABLE; I915_WRITE(BLC_PWM_PCH_CTL1, pwm); } + dev_priv->lid_notifier.notifier_call = intel_lid_notify; + if (acpi_lid_notifier_register(&dev_priv->lid_notifier)) { + DRM_DEBUG("lid notifier registration failed\n"); + dev_priv->lid_notifier.notifier_call = NULL; + } drm_sysfs_connector_add(connector); return; -- cgit v1.2.3