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drm/i915: Always use SDVO_B detect bit for SDVO output detection.

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After the following commit is shipped, the SDVO C detection will depend on
the SDVO_C/DP detion bit.
commit 13520b051e
Author: Kristian Høgsberg <krh@redhat.com>
Date:   Fri Mar 13 15:42:14 2009 -0400

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

According to the spec we should continue to detect the SDVO_B/C based on
the SDVO_B detection bit.  The new detection bit on G4X platform is for
the HDMI_C detection rather than SDVO_C detection.

https://bugs.freedesktop.org/show_bug.cgi?id=20639

Signed-off-by: Ma Ling <ling.ma@intel.com>
Acked-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Ma Ling 2009-08-24 13:50:23 +08:00 committed by Eric Anholt
parent 19e1f888c6
commit 27185ae1b7
1 changed files with 9 additions and 9 deletions
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18
drivers/gpu/drm/i915/intel_display.c
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@ -3218,30 +3218,30 @@ static void intel_setup_outputs(struct drm_device *dev)
intel_dp_init(dev, PCH_DP_D);
} else if (IS_I9XX(dev)) {
int found;
u32 reg;
bool found = false;
if (I915_READ(SDVOB) & SDVO_DETECTED) {
found = intel_sdvo_init(dev, SDVOB);
if (!found && SUPPORTS_INTEGRATED_HDMI(dev))
intel_hdmi_init(dev, SDVOB);
if (!found && SUPPORTS_INTEGRATED_DP(dev))
intel_dp_init(dev, DP_B);
}
/* 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) {
if (I915_READ(SDVOB) & SDVO_DETECTED)
found = intel_sdvo_init(dev, SDVOC);
if (!found && SUPPORTS_INTEGRATED_HDMI(dev))
if (!found && (I915_READ(SDVOC) & SDVO_DETECTED)) {
if (SUPPORTS_INTEGRATED_HDMI(dev))
intel_hdmi_init(dev, SDVOC);
if (!found && SUPPORTS_INTEGRATED_DP(dev))
if (SUPPORTS_INTEGRATED_DP(dev))
intel_dp_init(dev, DP_C);
}
if (SUPPORTS_INTEGRATED_DP(dev) && (I915_READ(DP_D) & DP_DETECTED))
intel_dp_init(dev, DP_D);
} else