With the other bits in place, we can do this safely. v2: disable backlight on suspend to prevent premature enablement on resume v3: disable CRTCs on suspend to allow RTD3 (Kristen)
Signed-off-by: Jesse Barnes <[email protected]> --- drivers/gpu/drm/i915/i915_drv.c | 14 +++++++++++--- drivers/gpu/drm/i915/intel_fb.c | 3 +++ 2 files changed, 14 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index 6c4b13c..bf57e1c 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -458,6 +458,7 @@ bool i915_semaphore_is_enabled(struct drm_device *dev) static int i915_drm_freeze(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; + struct drm_crtc *crtc; /* ignore lid events during suspend */ mutex_lock(&dev_priv->modeset_restore_lock); @@ -481,10 +482,14 @@ static int i915_drm_freeze(struct drm_device *dev) cancel_delayed_work_sync(&dev_priv->rps.delayed_resume_work); - intel_modeset_disable(dev); - drm_irq_uninstall(dev); dev_priv->enable_hotplug_processing = false; + /* + * Disable CRTCs directly since we want to preserve sw state + * for _thaw. + */ + list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) + dev_priv->display.crtc_disable(crtc); } i915_save_state(dev); @@ -562,7 +567,10 @@ static int __i915_drm_thaw(struct drm_device *dev) drm_irq_install(dev); intel_modeset_init_hw(dev); - intel_modeset_setup_hw_state(dev, false); + + drm_modeset_lock_all(dev); + intel_modeset_setup_hw_state(dev, true); + drm_modeset_unlock_all(dev); /* * ... but also need to make sure that hotplug processing diff --git a/drivers/gpu/drm/i915/intel_fb.c b/drivers/gpu/drm/i915/intel_fb.c index f203418..8d81c929 100644 --- a/drivers/gpu/drm/i915/intel_fb.c +++ b/drivers/gpu/drm/i915/intel_fb.c @@ -150,6 +150,9 @@ static int intelfb_create(struct drm_fb_helper *helper, } info->screen_size = size; + /* This driver doesn't need a VT switch to restore the mode on resume */ + info->skip_vt_switch = true; + drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth); drm_fb_helper_fill_var(info, &ifbdev->helper, sizes->fb_width, sizes->fb_height); -- 1.7.9.5 _______________________________________________ Intel-gfx mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/intel-gfx
