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drm/i915: Fix intel_crtc_mode_get() mode clock
i9xx_crtc_clock_get() no longer populates adjusted_mode.clock, so we
must get the pixel clock from port_clock in intel_crtc_mode_get().
This bug caused Chris's 845g machine to lockup during boot, and it
was introduced in:
commit 18442d0878
Author: Ville Syrjälä <ville.syrjala@linux.intel.com>
Date: Fri Sep 13 16:00:08 2013 +0300
drm/i915: Fix port_clock and adjusted_mode.clock readout all over
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=69713
Tested-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
parent
18b5992c37
commit
773ae03465
@ -7543,7 +7543,7 @@ struct drm_display_mode *intel_crtc_mode_get(struct drm_device *dev,
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pipe_config.dpll_hw_state.fp1 = I915_READ(FP1(pipe));
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i9xx_crtc_clock_get(intel_crtc, &pipe_config);
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mode->clock = pipe_config.adjusted_mode.clock;
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mode->clock = pipe_config.port_clock / pipe_config.pixel_multiplier;
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mode->hdisplay = (htot & 0xffff) + 1;
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mode->htotal = ((htot & 0xffff0000) >> 16) + 1;
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mode->hsync_start = (hsync & 0xffff) + 1;
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