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drm/fb-helper: document remove*_conflicting_framebuffers() 

Copy remove*_conflicting_framebuffers() kerneldocs from fbdev code
to make DRM developers' life easier.

Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/f70c1cc4a4f77dd9bad58fc7ca344609c0a91fa7.1536342228.git.mirq-linux@rere.qmqm.pl
This commit is contained in:
Michał Mirosław 2018-09-07 19:47:07 +02:00 committed by Daniel Vetter
parent d3147adcfd
commit c9527f0de5
1 changed files with 22 additions and 0 deletions
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22
include/drm/drm_fb_helper.h
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@ -604,6 +604,16 @@ drm_fbdev_generic_setup(struct drm_device *dev, unsigned int preferred_bpp)
#endif
/**
* drm_fb_helper_remove_conflicting_framebuffers - remove firmware-configured framebuffers
* @a: memory range, users of which are to be removed
* @name: requesting driver name
* @primary: also kick vga16fb if present
*
* This function removes framebuffer devices (initialized by firmware/bootloader)
* which use memory range described by @a. If @a is NULL all such devices are
* removed.
*/
static inline int
drm_fb_helper_remove_conflicting_framebuffers(struct apertures_struct *a,
const char *name, bool primary)
@ -615,6 +625,18 @@ drm_fb_helper_remove_conflicting_framebuffers(struct apertures_struct *a,
#endif
}
/**
* drm_fb_helper_remove_conflicting_pci_framebuffers - remove firmware-configured framebuffers for PCI devices
* @pdev: PCI device
* @resource_id: index of PCI BAR configuring framebuffer memory
* @name: requesting driver name
*
* This function removes framebuffer devices (eg. initialized by firmware)
* using memory range configured for @pdev's BAR @resource_id.
*
* The function assumes that PCI device with shadowed ROM drives a primary
* display and so kicks out vga16fb.
*/
static inline int
drm_fb_helper_remove_conflicting_pci_framebuffers(struct pci_dev *pdev,
int resource_id,