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| author | Noralf Trønnes <noralf@tronnes.org> | 2018-07-03 18:03:47 +0200 |
|---|---|---|
| committer | Noralf Trønnes <noralf@tronnes.org> | 2018-07-10 14:51:37 +0200 |
| commit | c76f0f7cb546b661b5e0ac769850a5c854927f65 (patch) | |
| tree | 2435747fe4864fdd2406be8bcd089fb9e9eda33b /drivers/gpu/drm/drm_drv.c | |
| parent | drm: vkms: select DRM_KMS_HELPER (diff) | |
| download | linux-c76f0f7cb546b661b5e0ac769850a5c854927f65.tar.xz linux-c76f0f7cb546b661b5e0ac769850a5c854927f65.zip | |
drm: Begin an API for in-kernel clients
This the beginning of an API for in-kernel clients.
First out is a way to get a framebuffer backed by a dumb buffer.
Only GEM drivers are supported.
The original idea of using an exported dma-buf was dropped because it
also creates an anonomous file descriptor which doesn't work when the
buffer is created from a kernel thread. The easy way out is to use
drm_driver.gem_prime_vmap to get the virtual address, which requires a
GEM object. This excludes the vmwgfx driver which is the only non-GEM
driver apart from the legacy ones. A solution for vmwgfx will have to be
worked out later if it wants to support the client API which it probably
will when we have a bootsplash client.
Suggested-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20180703160354.59955-2-noralf@tronnes.org
Diffstat (limited to 'drivers/gpu/drm/drm_drv.c')
| -rw-r--r-- | drivers/gpu/drm/drm_drv.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c index 7af748ed1c58..6eb935bb2f92 100644 --- a/drivers/gpu/drm/drm_drv.c +++ b/drivers/gpu/drm/drm_drv.c @@ -34,6 +34,7 @@ #include <linux/slab.h> #include <linux/srcu.h> +#include <drm/drm_client.h> #include <drm/drm_drv.h> #include <drm/drmP.h> @@ -505,6 +506,8 @@ int drm_dev_init(struct drm_device *dev, dev->driver = driver; INIT_LIST_HEAD(&dev->filelist); + INIT_LIST_HEAD(&dev->filelist_internal); + INIT_LIST_HEAD(&dev->clientlist); INIT_LIST_HEAD(&dev->ctxlist); INIT_LIST_HEAD(&dev->vmalist); INIT_LIST_HEAD(&dev->maplist); @@ -514,6 +517,7 @@ int drm_dev_init(struct drm_device *dev, spin_lock_init(&dev->event_lock); mutex_init(&dev->struct_mutex); mutex_init(&dev->filelist_mutex); + mutex_init(&dev->clientlist_mutex); mutex_init(&dev->ctxlist_mutex); mutex_init(&dev->master_mutex); @@ -569,6 +573,7 @@ err_minors: err_free: mutex_destroy(&dev->master_mutex); mutex_destroy(&dev->ctxlist_mutex); + mutex_destroy(&dev->clientlist_mutex); mutex_destroy(&dev->filelist_mutex); mutex_destroy(&dev->struct_mutex); return ret; @@ -603,6 +608,7 @@ void drm_dev_fini(struct drm_device *dev) mutex_destroy(&dev->master_mutex); mutex_destroy(&dev->ctxlist_mutex); + mutex_destroy(&dev->clientlist_mutex); mutex_destroy(&dev->filelist_mutex); mutex_destroy(&dev->struct_mutex); kfree(dev->unique); @@ -858,6 +864,8 @@ void drm_dev_unregister(struct drm_device *dev) dev->registered = false; + drm_client_dev_unregister(dev); + if (drm_core_check_feature(dev, DRIVER_MODESET)) drm_modeset_unregister_all(dev); |