drm/i915: Restore the KMS modeset for every activated CRTC
Restore the modeset for every activated CRTC in course of resume. This is realized by calling the function of drm_helper_resume_force_mode. Note: it is meaningful only for the KMS mode. https://bugs.freedesktop.org/show_bug.cgi?id=21719 https://bugs.freedesktop.org/show_bug.cgi?id=21708 https://bugs.freedesktop.org/show_bug.cgi?id=22285 https://bugs.freedesktop.org/show_bug.cgi?id=22263 Signed-off-by: Zhao Yakui <yakui.zhao@intel.com> Signed-off-by: Eric Anholt <eric@anholt.net>
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@ -35,6 +35,7 @@
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#include "drm_pciids.h"
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#include <linux/console.h>
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#include "drm_crtc_helper.h"
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static unsigned int i915_modeset = -1;
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module_param_named(modeset, i915_modeset, int, 0400);
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@ -115,6 +116,10 @@ static int i915_resume(struct drm_device *dev)
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drm_irq_install(dev);
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}
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if (drm_core_check_feature(dev, DRIVER_MODESET)) {
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/* Resume the modeset for every activated CRTC */
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drm_helper_resume_force_mode(dev);
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}
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return ret;
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}
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