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66 lines
1.9 KiB
66 lines
1.9 KiB
/* SPDX-License-Identifier: GPL-2.0+ */ |
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/* |
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* Copyright (C) 2018 BayLibre, SAS |
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*/ |
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#ifndef __SOC_MESON_CANVAS_H |
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#define __SOC_MESON_CANVAS_H |
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#include <linux/kernel.h> |
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#define MESON_CANVAS_WRAP_NONE 0x00 |
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#define MESON_CANVAS_WRAP_X 0x01 |
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#define MESON_CANVAS_WRAP_Y 0x02 |
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#define MESON_CANVAS_BLKMODE_LINEAR 0x00 |
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#define MESON_CANVAS_BLKMODE_32x32 0x01 |
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#define MESON_CANVAS_BLKMODE_64x64 0x02 |
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#define MESON_CANVAS_ENDIAN_SWAP16 0x1 |
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#define MESON_CANVAS_ENDIAN_SWAP32 0x3 |
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#define MESON_CANVAS_ENDIAN_SWAP64 0x7 |
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#define MESON_CANVAS_ENDIAN_SWAP128 0xf |
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struct device; |
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struct meson_canvas; |
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/** |
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* meson_canvas_get() - get a canvas provider instance |
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* |
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* @dev: consumer device pointer |
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*/ |
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struct meson_canvas *meson_canvas_get(struct device *dev); |
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/** |
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* meson_canvas_alloc() - take ownership of a canvas |
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* |
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* @canvas: canvas provider instance retrieved from meson_canvas_get() |
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* @canvas_index: will be filled with the canvas ID |
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*/ |
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int meson_canvas_alloc(struct meson_canvas *canvas, u8 *canvas_index); |
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/** |
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* meson_canvas_free() - remove ownership from a canvas |
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* |
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* @canvas: canvas provider instance retrieved from meson_canvas_get() |
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* @canvas_index: canvas ID that was obtained via meson_canvas_alloc() |
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*/ |
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int meson_canvas_free(struct meson_canvas *canvas, u8 canvas_index); |
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/** |
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* meson_canvas_config() - configure a canvas |
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* |
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* @canvas: canvas provider instance retrieved from meson_canvas_get() |
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* @canvas_index: canvas ID that was obtained via meson_canvas_alloc() |
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* @addr: physical address to the pixel buffer |
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* @stride: width of the buffer |
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* @height: height of the buffer |
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* @wrap: undocumented |
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* @blkmode: block mode (linear, 32x32, 64x64) |
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* @endian: byte swapping (swap16, swap32, swap64, swap128) |
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*/ |
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int meson_canvas_config(struct meson_canvas *canvas, u8 canvas_index, |
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u32 addr, u32 stride, u32 height, |
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unsigned int wrap, unsigned int blkmode, |
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unsigned int endian); |
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#endif
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