From dbd62e16fd53d37093a4695692ceac1a470f0b3f Mon Sep 17 00:00:00 2001 From: =?utf8?q?Noralf=20Tr=C3=B8nnes?= Date: Tue, 15 Jan 2019 05:36:39 +0100 Subject: [PATCH] drm/gem-fb-helper: Add drm_gem_fb_create_with_dirty() MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit This adds a .fb_create helper that sets the .dirty callback to drm_atomic_helper_dirtyfb(). v2: Improve docs (Daniel) Signed-off-by: Noralf Trønnes Acked-by: Daniel Vetter Reviewed-by: Sam Ravnborg Link: https://patchwork.freedesktop.org/patch/msgid/20190115043643.2364-2-noralf@tronnes.org --- drivers/gpu/drm/drm_gem_framebuffer_helper.c | 50 +++++++++++++++++--- include/drm/drm_gem_framebuffer_helper.h | 3 ++ 2 files changed, 47 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/drm_gem_framebuffer_helper.c b/drivers/gpu/drm/drm_gem_framebuffer_helper.c index acb466d25afc..65edb1ccb185 100644 --- a/drivers/gpu/drm/drm_gem_framebuffer_helper.c +++ b/drivers/gpu/drm/drm_gem_framebuffer_helper.c @@ -17,6 +17,7 @@ #include #include #include +#include #include #include #include @@ -136,10 +137,9 @@ EXPORT_SYMBOL(drm_gem_fb_create_handle); * @mode_cmd: Metadata from the userspace framebuffer creation request * @funcs: vtable to be used for the new framebuffer object * - * This can be used to set &drm_framebuffer_funcs for drivers that need the - * &drm_framebuffer_funcs.dirty callback. Use drm_gem_fb_create() if you don't - * need to change &drm_framebuffer_funcs. - * The function does buffer size validation. + * This function can be used to set &drm_framebuffer_funcs for drivers that need + * custom framebuffer callbacks. Use drm_gem_fb_create() if you don't need to + * change &drm_framebuffer_funcs. The function does buffer size validation. * * Returns: * Pointer to a &drm_framebuffer on success or an error pointer on failure. @@ -215,8 +215,8 @@ static const struct drm_framebuffer_funcs drm_gem_fb_funcs = { * * If your hardware has special alignment or pitch requirements these should be * checked before calling this function. The function does buffer size - * validation. Use drm_gem_fb_create_with_funcs() if you need to set - * &drm_framebuffer_funcs.dirty. + * validation. Use drm_gem_fb_create_with_dirty() if you need framebuffer + * flushing. * * Drivers can use this as their &drm_mode_config_funcs.fb_create callback. * The ADDFB2 IOCTL calls into this callback. @@ -233,6 +233,44 @@ drm_gem_fb_create(struct drm_device *dev, struct drm_file *file, } EXPORT_SYMBOL_GPL(drm_gem_fb_create); +static const struct drm_framebuffer_funcs drm_gem_fb_funcs_dirtyfb = { + .destroy = drm_gem_fb_destroy, + .create_handle = drm_gem_fb_create_handle, + .dirty = drm_atomic_helper_dirtyfb, +}; + +/** + * drm_gem_fb_create_with_dirty() - Helper function for the + * &drm_mode_config_funcs.fb_create callback + * @dev: DRM device + * @file: DRM file that holds the GEM handle(s) backing the framebuffer + * @mode_cmd: Metadata from the userspace framebuffer creation request + * + * This function creates a new framebuffer object described by + * &drm_mode_fb_cmd2. This description includes handles for the buffer(s) + * backing the framebuffer. drm_atomic_helper_dirtyfb() is used for the dirty + * callback giving framebuffer flushing through the atomic machinery. Use + * drm_gem_fb_create() if you don't need the dirty callback. + * The function does buffer size validation. + * + * Drivers should also call drm_plane_enable_fb_damage_clips() on all planes + * to enable userspace to use damage clips also with the ATOMIC IOCTL. + * + * Drivers can use this as their &drm_mode_config_funcs.fb_create callback. + * The ADDFB2 IOCTL calls into this callback. + * + * Returns: + * Pointer to a &drm_framebuffer on success or an error pointer on failure. + */ +struct drm_framebuffer * +drm_gem_fb_create_with_dirty(struct drm_device *dev, struct drm_file *file, + const struct drm_mode_fb_cmd2 *mode_cmd) +{ + return drm_gem_fb_create_with_funcs(dev, file, mode_cmd, + &drm_gem_fb_funcs_dirtyfb); +} +EXPORT_SYMBOL_GPL(drm_gem_fb_create_with_dirty); + /** * drm_gem_fb_prepare_fb() - Prepare a GEM backed framebuffer * @plane: Plane diff --git a/include/drm/drm_gem_framebuffer_helper.h b/include/drm/drm_gem_framebuffer_helper.h index a38de7eb55b4..7f307e834eef 100644 --- a/include/drm/drm_gem_framebuffer_helper.h +++ b/include/drm/drm_gem_framebuffer_helper.h @@ -25,6 +25,9 @@ drm_gem_fb_create_with_funcs(struct drm_device *dev, struct drm_file *file, struct drm_framebuffer * drm_gem_fb_create(struct drm_device *dev, struct drm_file *file, const struct drm_mode_fb_cmd2 *mode_cmd); +struct drm_framebuffer * +drm_gem_fb_create_with_dirty(struct drm_device *dev, struct drm_file *file, + const struct drm_mode_fb_cmd2 *mode_cmd); int drm_gem_fb_prepare_fb(struct drm_plane *plane, struct drm_plane_state *state); -- 2.30.2