Implement a simple wrapper around drm_gem_cma_dumb_create_internal() for alignment.
Signed-off-by: Hyun Kwon hyun.kwon@xilinx.com --- drivers/gpu/drm/xlnx/xlnx_gem.c | 38 ++++++++++++++++++++++++++++++++++++++ drivers/gpu/drm/xlnx/xlnx_gem.h | 18 ++++++++++++++++++ 2 files changed, 56 insertions(+) create mode 100644 drivers/gpu/drm/xlnx/xlnx_gem.c create mode 100644 drivers/gpu/drm/xlnx/xlnx_gem.h
diff --git a/drivers/gpu/drm/xlnx/xlnx_gem.c b/drivers/gpu/drm/xlnx/xlnx_gem.c new file mode 100644 index 0000000..af1abdc --- /dev/null +++ b/drivers/gpu/drm/xlnx/xlnx_gem.c @@ -0,0 +1,38 @@ +/* + * Xilinx DRM KMS GEM helper + * + * Copyright (C) 2015 - 2018 Xilinx, Inc. + * + * Author: Hyun Woo Kwon hyun.kwon@xilinx.com + * + * SPDX-License-Identifier: GPL-2.0 + */ + +#include <drm/drmP.h> +#include <drm/drm_gem_cma_helper.h> + +#include "xlnx_gem.h" + +/* + * xlnx_gem_cma_dumb_create - (struct drm_driver)->dumb_create callback + * @file_priv: drm_file object + * @drm: DRM object + * @args: info for dumb scanout buffer creation + * + * This function is for dumb_create callback of drm_driver struct. Simply + * it wraps around drm_gem_cma_dumb_create() and sets the pitch value + * by retrieving the value from the device. + * + * Return: The return value from drm_gem_cma_dumb_create() + */ +int xlnx_gem_cma_dumb_create(struct drm_file *file_priv, struct drm_device *drm, + struct drm_mode_create_dumb *args) +{ + int pitch = DIV_ROUND_UP(args->width * args->bpp, 8); + unsigned int align = xlnx_get_align(drm); + + if (!args->pitch || !IS_ALIGNED(args->pitch, align)) + args->pitch = ALIGN(pitch, align); + + return drm_gem_cma_dumb_create_internal(file_priv, drm, args); +} diff --git a/drivers/gpu/drm/xlnx/xlnx_gem.h b/drivers/gpu/drm/xlnx/xlnx_gem.h new file mode 100644 index 0000000..bed8ff9 --- /dev/null +++ b/drivers/gpu/drm/xlnx/xlnx_gem.h @@ -0,0 +1,18 @@ +/* + * Xilinx DRM KMS GEM helper header + * + * Copyright (C) 2015 - 2018 Xilinx, Inc. + * + * Author: Hyun Woo Kwon hyun.kwon@xilinx.com + * + * SPDX-License-Identifier: GPL-2.0 + */ + +#ifndef _XLNX_GEM_H_ +#define _XLNX_GEM_H_ + +int xlnx_gem_cma_dumb_create(struct drm_file *file_priv, + struct drm_device *drm, + struct drm_mode_create_dumb *args); + +#endif /* _XLNX_GEM_H_ */