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drm/i915: Add double_wide readout and checking 

Read the double wide pipe information from hardware in
i9xx_get_pipe_config(), and check it in intel_pipe_config_compare()

For gen4+ double_wide is always false so the comparison can be done
on all platforms.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Ville Syrjälä 2013-09-04 18:30:03 +03:00 committed by Daniel Vetter
parent cf532bb255
commit 282740f73a
1 changed files with 5 additions and 0 deletions
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5
drivers/gpu/drm/i915/intel_display.c
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@ -5042,6 +5042,9 @@ static bool i9xx_get_pipe_config(struct intel_crtc *crtc,
}
}
if (INTEL_INFO(dev)->gen < 4)
pipe_config->double_wide = tmp & PIPECONF_DOUBLE_WIDE;
intel_get_pipe_timings(crtc, pipe_config);
i9xx_get_pfit_config(crtc, pipe_config);
@ -8761,6 +8764,8 @@ intel_pipe_config_compare(struct drm_device *dev,
PIPE_CONF_CHECK_I(ips_enabled);
PIPE_CONF_CHECK_I(double_wide);
PIPE_CONF_CHECK_I(shared_dpll);
PIPE_CONF_CHECK_X(dpll_hw_state.dpll);
PIPE_CONF_CHECK_X(dpll_hw_state.dpll_md);