linux/drivers/gpu/drm/i915/gvt/fb_decoder.c

/*
 * Copyright(c) 2011-2016 Intel Corporation. All rights reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 * Authors:
 *    Kevin Tian <[email protected]>
 *
 * Contributors:
 *    Bing Niu <[email protected]>
 *    Xu Han <[email protected]>
 *    Ping Gao <[email protected]>
 *    Xiaoguang Chen <[email protected]>
 *    Yang Liu <[email protected]>
 *    Tina Zhang <[email protected]>
 *
 */

#include <uapi/drm/drm_fourcc.h>

#include "gvt.h"
#include "i915_drv.h"
#include "i915_pvinfo.h"
#include "i915_reg.h"

#include "display/i9xx_plane_regs.h"
#include "display/intel_cursor_regs.h"
#include "display/intel_sprite_regs.h"
#include "display/skl_universal_plane_regs.h"

#define PRIMARY_FORMAT_NUM …
struct pixel_format { … };

static const struct pixel_format bdw_pixel_formats[] = …;

static const struct pixel_format skl_pixel_formats[] = …;

static int bdw_format_to_drm(int format)
{ … }

static int skl_format_to_drm(int format, bool rgb_order, bool alpha,
	int yuv_order)
{ … }

static u32 intel_vgpu_get_stride(struct intel_vgpu *vgpu, int pipe,
	u32 tiled, int stride_mask, int bpp)
{ … }

static int get_active_pipe(struct intel_vgpu *vgpu)
{ … }

/**
 * intel_vgpu_decode_primary_plane - Decode primary plane
 * @vgpu: input vgpu
 * @plane: primary plane to save decoded info
 * This function is called for decoding plane
 *
 * Returns:
 * 0 on success, non-zero if failed.
 */
int intel_vgpu_decode_primary_plane(struct intel_vgpu *vgpu,
	struct intel_vgpu_primary_plane_format *plane)
{ … }

#define CURSOR_FORMAT_NUM …
struct cursor_mode_format { … };

static const struct cursor_mode_format cursor_pixel_formats[] = …;

static int cursor_mode_to_drm(int mode)
{ … }

/**
 * intel_vgpu_decode_cursor_plane - Decode sprite plane
 * @vgpu: input vgpu
 * @plane: cursor plane to save decoded info
 * This function is called for decoding plane
 *
 * Returns:
 * 0 on success, non-zero if failed.
 */
int intel_vgpu_decode_cursor_plane(struct intel_vgpu *vgpu,
	struct intel_vgpu_cursor_plane_format *plane)
{ … }

#define SPRITE_FORMAT_NUM …

static const struct pixel_format sprite_pixel_formats[SPRITE_FORMAT_NUM] = …;

/**
 * intel_vgpu_decode_sprite_plane - Decode sprite plane
 * @vgpu: input vgpu
 * @plane: sprite plane to save decoded info
 * This function is called for decoding plane
 *
 * Returns:
 * 0 on success, non-zero if failed.
 */
int intel_vgpu_decode_sprite_plane(struct intel_vgpu *vgpu,
	struct intel_vgpu_sprite_plane_format *plane)
{ … }