It takes over 0.5s to probe the outputs and configure the i915 console. This can be performed in the background whilst the rest of the system is booting.

Based on a patch by Arjan van de Van arjan@linux.intel.com

Signed-off-by: Chris Wilson chris@chris-wilson.co.uk Cc: Dave Airlie airlied@redhat.com --- drivers/gpu/drm/drm_drv.c | 6 ++++++ drivers/gpu/drm/i915/intel_fb.c | 13 +++++++++++-- include/drm/drmP.h | 2 ++ 3 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c index 90288ec..fc1f641 100644 --- a/drivers/gpu/drm/drm_drv.c +++ b/drivers/gpu/drm/drm_drv.c @@ -48,9 +48,12 @@

#include <linux/debugfs.h> #include <linux/slab.h> +#include <linux/async.h> #include "drmP.h" #include "drm_core.h"

+LIST_HEAD(drm_async_domain); +EXPORT_SYMBOL_GPL(drm_async_domain);

static int drm_version(struct drm_device *dev, void *data, struct drm_file *file_priv); @@ -266,6 +269,9 @@ void drm_exit(struct drm_driver *driver) struct drm_device *dev, *tmp; DRM_DEBUG("\n");

+ /* make sure all async operations are finished */ + async_synchronize_full_domain(&drm_async_domain); + if (driver->driver_features & DRIVER_MODESET) { pci_unregister_driver(&driver->pci_driver); } else { diff --git a/drivers/gpu/drm/i915/intel_fb.c b/drivers/gpu/drm/i915/intel_fb.c index fe2ab62..cb37c08 100644 --- a/drivers/gpu/drm/i915/intel_fb.c +++ b/drivers/gpu/drm/i915/intel_fb.c @@ -34,6 +34,7 @@ #include <linux/delay.h> #include <linux/fb.h> #include <linux/init.h> +#include <linux/async.h> #include <linux/vga_switcheroo.h>

#include "drmP.h" @@ -245,6 +246,14 @@ int intel_fbdev_destroy(struct drm_device *dev, return 0; }

+static void intel_fbdev_init_async(void *ptr, async_cookie_t cookie) +{ + struct intel_fbdev *ifbdev = ptr; + + drm_fb_helper_single_add_all_connectors(&ifbdev->helper); + drm_fb_helper_initial_config(&ifbdev->helper, 32); +} + int intel_fbdev_init(struct drm_device *dev) { struct intel_fbdev *ifbdev; @@ -266,8 +275,8 @@ int intel_fbdev_init(struct drm_device *dev) return ret; }

- drm_fb_helper_single_add_all_connectors(&ifbdev->helper); - drm_fb_helper_initial_config(&ifbdev->helper, 32); + async_schedule_domain(intel_fbdev_init_async, ifbdev, + &drm_async_domain); return 0; }

diff --git a/include/drm/drmP.h b/include/drm/drmP.h index e2a4da7..4a5b902 100644 --- a/include/drm/drmP.h +++ b/include/drm/drmP.h @@ -326,6 +326,8 @@ struct drm_vma_entry { pid_t pid; };

+extern struct list_head drm_async_domain; + /** * DMA buffer. */