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| author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2012-04-01 13:38:50 +0200 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2012-04-09 18:04:10 +0200 |
| commit | 618563e3945b9d0864154bab3c607865b557cecc (patch) | |
| tree | 97c44d52272db4cb07c7a9bfa64e65678e65d4f7 /drivers/gpu/drm/i915/intel_display.c | |
| parent | bc0daf488fc4a255733ad19fe0de995f4a4d745f (diff) | |
| download | lwn-618563e3945b9d0864154bab3c607865b557cecc.tar.gz lwn-618563e3945b9d0864154bab3c607865b557cecc.zip | |
drm/i915: Add a dual link lvds quirk for MacBook Pro 8,2
When booting with EFI, Apple botched this one up.
v2: Switch the quirk dmesg output to DRM_INFO.
v3: Actually git add the new things ...
Tested-by: Austin Lund <austin.lund@gmail.com>
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=42842
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_display.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_display.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 2bd08ef056d9..6ec81b43ffc0 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -24,6 +24,7 @@ * Eric Anholt <eric@anholt.net> */ +#include <linux/dmi.h> #include <linux/cpufreq.h> #include <linux/module.h> #include <linux/input.h> @@ -418,6 +419,24 @@ static void vlv_init_dpio(struct drm_device *dev) POSTING_READ(DPIO_CTL); } +static int intel_dual_link_lvds_callback(const struct dmi_system_id *id) +{ + DRM_INFO("Forcing lvds to dual link mode on %s\n", id->ident); + return 1; +} + +static const struct dmi_system_id intel_dual_link_lvds[] = { + { + .callback = intel_dual_link_lvds_callback, + .ident = "Apple MacBook Pro (Core i5/i7 Series)", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."), + DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro8,2"), + }, + }, + { } /* terminating entry */ +}; + static bool is_dual_link_lvds(struct drm_i915_private *dev_priv, unsigned int reg) { @@ -427,6 +446,9 @@ static bool is_dual_link_lvds(struct drm_i915_private *dev_priv, if (i915_lvds_channel_mode > 0) return i915_lvds_channel_mode == 2; + if (dmi_check_system(intel_dual_link_lvds)) + return true; + if (dev_priv->lvds_val) val = dev_priv->lvds_val; else { |