1 /* SPDX-License-Identifier: GPL-2.0+ */
3 * Copyright (C) 2018 BayLibre, SAS
5 #ifndef __SOC_MESON_CANVAS_H
6 #define __SOC_MESON_CANVAS_H
8 #include <linux/kernel.h>
10 #define MESON_CANVAS_WRAP_NONE 0x00
11 #define MESON_CANVAS_WRAP_X 0x01
12 #define MESON_CANVAS_WRAP_Y 0x02
14 #define MESON_CANVAS_BLKMODE_LINEAR 0x00
15 #define MESON_CANVAS_BLKMODE_32x32 0x01
16 #define MESON_CANVAS_BLKMODE_64x64 0x02
18 #define MESON_CANVAS_ENDIAN_SWAP16 0x1
19 #define MESON_CANVAS_ENDIAN_SWAP32 0x3
20 #define MESON_CANVAS_ENDIAN_SWAP64 0x7
21 #define MESON_CANVAS_ENDIAN_SWAP128 0xf
27 * meson_canvas_get() - get a canvas provider instance
29 * @dev: consumer device pointer
31 struct meson_canvas *meson_canvas_get(struct device *dev);
34 * meson_canvas_alloc() - take ownership of a canvas
36 * @canvas: canvas provider instance retrieved from meson_canvas_get()
37 * @canvas_index: will be filled with the canvas ID
39 int meson_canvas_alloc(struct meson_canvas *canvas, u8 *canvas_index);
42 * meson_canvas_free() - remove ownership from a canvas
44 * @canvas: canvas provider instance retrieved from meson_canvas_get()
45 * @canvas_index: canvas ID that was obtained via meson_canvas_alloc()
47 int meson_canvas_free(struct meson_canvas *canvas, u8 canvas_index);
50 * meson_canvas_config() - configure a canvas
52 * @canvas: canvas provider instance retrieved from meson_canvas_get()
53 * @canvas_index: canvas ID that was obtained via meson_canvas_alloc()
54 * @addr: physical address to the pixel buffer
55 * @stride: width of the buffer
56 * @height: height of the buffer
58 * @blkmode: block mode (linear, 32x32, 64x64)
59 * @endian: byte swapping (swap16, swap32, swap64, swap128)
61 int meson_canvas_config(struct meson_canvas *canvas, u8 canvas_index,
62 u32 addr, u32 stride, u32 height,
63 unsigned int wrap, unsigned int blkmode,