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drm/i915: Read the right SDVO register when detecting SVDO/HDMI. 

This fixes incorrect detection of the second SDVO/HDMI output on G4X, and
extra boot time on pre-G4X.

Signed-off-by: Kristian Høgsberg <krh@redhat.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Kristian Høgsberg 2009-03-13 15:42:14 -04:00 committed by Eric Anholt
parent d490609321
commit 13520b051e
1 changed files with 9 additions and 1 deletions
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10
drivers/gpu/drm/i915/intel_display.c
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@ -1735,13 +1735,21 @@ static void intel_setup_outputs(struct drm_device *dev)
if (IS_I9XX(dev)) {
int found;
u32 reg;
if (I915_READ(SDVOB) & SDVO_DETECTED) {
found = intel_sdvo_init(dev, SDVOB);
if (!found && SUPPORTS_INTEGRATED_HDMI(dev))
intel_hdmi_init(dev, SDVOB);
}
if (!IS_G4X(dev) || (I915_READ(SDVOB) & SDVO_DETECTED)) {
/* Before G4X SDVOC doesn't have its own detect register */
if (IS_G4X(dev))
reg = SDVOC;
else
reg = SDVOB;
if (I915_READ(reg) & SDVO_DETECTED) {
found = intel_sdvo_init(dev, SDVOC);
if (!found && SUPPORTS_INTEGRATED_HDMI(dev))
intel_hdmi_init(dev, SDVOC);