SYNOPSIS

int drm_gem_cma_dumb_create(struct drm_file * file_priv, struct drm_device * drm, struct drm_mode_create_dumb * args);

ARGUMENTS

file_priv

DRM file-private structure to create the dumb buffer for

drm

DRM device

args

IOCTL data

DESCRIPTION

This function computes the pitch of the dumb buffer and rounds it up to an integer number of bytes per pixel. Drivers for hardware that doesn't have any additional restrictions on the pitch can directly use this function as their ->dumb_create callback.

For hardware with additional restrictions, drivers can adjust the fields set up by userspace and pass the IOCTL data along to the drm_gem_cma_dumb_create_internal function.

RETURNS

0 on success or a negative error code on failure.

AUTHORS

Jesse Barnes <[email protected]>
Intel Corporation,         
        

Initial version

Laurent Pinchart <[email protected]>
Ideas on board SPRL,         
        

Driver internals

Daniel Vetter <[email protected]>
Intel Corporation,         
        

Contributions all over the place

Lukas Wunner <[email protected]>

vga_switcheroo documentation

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