projects / J-u-boot.git / blame
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|---|---|---|
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1 | // SPDX-License-Identifier: GPL-2.0 |
| 2 | /* | |
| 3 | * Amlogic Meson Video Processing Unit driver | |
| 4 | * | |
| 5 | * Copyright (c) 2018 BayLibre, SAS. | |
| 6 | * Author: Neil Armstrong <[email protected]> | |
| 7 | */ | |
| 8 | ||
| b9dea62b SG |
9 | #include <dm.h> |
| 10 | #include <asm/io.h> | |
| 11 | ||
| 3bed4220 NA |
12 | #include "meson_vpu.h" |
| 13 | ||
| 14 | /* DMC Registers */ | |
| 15 | #define DMC_CAV_LUT_DATAL 0x48 /* 0x12 offset in data sheet */ | |
| 16 | #define CANVAS_WIDTH_LBIT 29 | |
| 17 | #define CANVAS_WIDTH_LWID 3 | |
| 18 | #define DMC_CAV_LUT_DATAH 0x4c /* 0x13 offset in data sheet */ | |
| 19 | #define CANVAS_WIDTH_HBIT 0 | |
| 20 | #define CANVAS_HEIGHT_BIT 9 | |
| 21 | #define CANVAS_BLKMODE_BIT 24 | |
| 22 | #define DMC_CAV_LUT_ADDR 0x50 /* 0x14 offset in data sheet */ | |
| 23 | #define CANVAS_LUT_WR_EN (0x2 << 8) | |
| 24 | #define CANVAS_LUT_RD_EN (0x1 << 8) | |
| 25 | ||
| 26 | void meson_canvas_setup(struct meson_vpu_priv *priv, | |
| 27 | u32 canvas_index, u32 addr, | |
| 28 | u32 stride, u32 height, | |
| 29 | unsigned int wrap, | |
| 30 | unsigned int blkmode) | |
| 31 | { | |
| 32 | dmc_write(DMC_CAV_LUT_DATAL, | |
| 33 | (((addr + 7) >> 3)) | | |
| 34 | (((stride + 7) >> 3) << CANVAS_WIDTH_LBIT)); | |
| 35 | ||
| 36 | dmc_write(DMC_CAV_LUT_DATAH, | |
| 37 | ((((stride + 7) >> 3) >> CANVAS_WIDTH_LWID) << | |
| 38 | CANVAS_WIDTH_HBIT) | | |
| 39 | (height << CANVAS_HEIGHT_BIT) | | |
| 40 | (wrap << 22) | | |
| 41 | (blkmode << CANVAS_BLKMODE_BIT)); | |
| 42 | ||
| 43 | dmc_write(DMC_CAV_LUT_ADDR, | |
| 44 | CANVAS_LUT_WR_EN | canvas_index); | |
| 45 | ||
| 46 | /* Force a read-back to make sure everything is flushed. */ | |
| 47 | dmc_read(DMC_CAV_LUT_DATAH); | |
| 48 | } |