| David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0+ */ |
| 2 | /* |
| 3 | * Copyright (C) 2018 BayLibre, SAS |
| 4 | */ |
| 5 | #ifndef __SOC_MESON_CANVAS_H |
| 6 | #define __SOC_MESON_CANVAS_H |
| 7 | |
| 8 | #include <linux/kernel.h> |
| 9 | |
| 10 | #define MESON_CANVAS_WRAP_NONE 0x00 |
| 11 | #define MESON_CANVAS_WRAP_X 0x01 |
| 12 | #define MESON_CANVAS_WRAP_Y 0x02 |
| 13 | |
| 14 | #define MESON_CANVAS_BLKMODE_LINEAR 0x00 |
| 15 | #define MESON_CANVAS_BLKMODE_32x32 0x01 |
| 16 | #define MESON_CANVAS_BLKMODE_64x64 0x02 |
| 17 | |
| 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 |
| 22 | |
| 23 | struct device; |
| 24 | struct meson_canvas; |
| 25 | |
| 26 | /** |
| 27 | * meson_canvas_get() - get a canvas provider instance |
| 28 | * |
| 29 | * @dev: consumer device pointer |
| 30 | */ |
| 31 | struct meson_canvas *meson_canvas_get(struct device *dev); |
| 32 | |
| 33 | /** |
| 34 | * meson_canvas_alloc() - take ownership of a canvas |
| 35 | * |
| 36 | * @canvas: canvas provider instance retrieved from meson_canvas_get() |
| 37 | * @canvas_index: will be filled with the canvas ID |
| 38 | */ |
| 39 | int meson_canvas_alloc(struct meson_canvas *canvas, u8 *canvas_index); |
| 40 | |
| 41 | /** |
| 42 | * meson_canvas_free() - remove ownership from a canvas |
| 43 | * |
| 44 | * @canvas: canvas provider instance retrieved from meson_canvas_get() |
| 45 | * @canvas_index: canvas ID that was obtained via meson_canvas_alloc() |
| 46 | */ |
| 47 | int meson_canvas_free(struct meson_canvas *canvas, u8 canvas_index); |
| 48 | |
| 49 | /** |
| 50 | * meson_canvas_config() - configure a canvas |
| 51 | * |
| 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 |
| 57 | * @wrap: undocumented |
| 58 | * @blkmode: block mode (linear, 32x32, 64x64) |
| 59 | * @endian: byte swapping (swap16, swap32, swap64, swap128) |
| 60 | */ |
| 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, |
| 64 | unsigned int endian); |
| 65 | |
| 66 | #endif |