drm/i915: Add a module parameter to ignore lid status

Seems like we are forever to be cursed with buggy firmware, so allow the
user to explicitly set the panel connection status.

Of secondary utility for cases where I run laptops with the lid closed,
but still want to configure the LVDS.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 64fb21e4bd2dc0aa1c3a48814acb6fb0765a5017..bdf4ceb1049df11e01e6908c3c697e309b21433b 100644 (file)
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -43,6 +43,9 @@ module_param_named(modeset, i915_modeset, int, 0400);
 unsigned int i915_fbpercrtc = 0;
 module_param_named(fbpercrtc, i915_fbpercrtc, int, 0400);
 
+int i915_panel_ignore_lid = 0;
+module_param_named(panel_ignore_lid, i915_panel_ignore_lid, int, 0600);
+
 unsigned int i915_powersave = 1;
 module_param_named(powersave, i915_powersave, int, 0600);
 

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 0c91262d259b4f290d594baecf0c8974452a83f5..bd24861bcd950853862ffb01b616b22ca5a0ee55 100644 (file)
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -958,6 +958,7 @@ enum intel_chip_family {
 extern struct drm_ioctl_desc i915_ioctls[];
 extern int i915_max_ioctl;
 extern unsigned int i915_fbpercrtc;
+extern int i915_panel_ignore_lid;
 extern unsigned int i915_powersave;
 extern unsigned int i915_lvds_downclock;
 extern unsigned int i915_panel_use_ssc;

diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c
index 286995a9a84ae6c7fc32a918e799f0cf6ff8546d..784660a3667b51c12ed453d9b82adae6a3ce9ba2 100644 (file)
--- a/drivers/gpu/drm/i915/intel_panel.c
+++ b/drivers/gpu/drm/i915/intel_panel.c
@@ -287,6 +287,11 @@ intel_panel_detect(struct drm_device *dev)
 {
        struct drm_i915_private *dev_priv = dev->dev_private;
 
+       if (i915_panel_ignore_lid)
+               return i915_panel_ignore_lid > 0 ?
+                       connector_status_connected :
+                       connector_status_disconnected;
+
        /* Assume that the BIOS does not lie through the OpRegion... */
        if (dev_priv->opregion.lid_state)
                return ioread32(dev_priv->opregion.lid_state) & 0x1 ?