uboot-phytec

// SPDX-License-Identifier: GPL-2.0

/*

 * Amlogic Meson Video Processing Unit driver

 *

 * Copyright (c) 2018 BayLibre, SAS.

 * Author: Neil Armstrong <narmstrong@baylibre.com>

 */

​

#include "meson_vpu.h"

​

/* DMC Registers */

#define DMC_CAV_LUT_DATAL   0x48 /* 0x12 offset in data sheet */

#define CANVAS_WIDTH_LBIT   29

#define CANVAS_WIDTH_LWID   3

#define DMC_CAV_LUT_DATAH   0x4c /* 0x13 offset in data sheet */

#define CANVAS_WIDTH_HBIT   0

#define CANVAS_HEIGHT_BIT   9

#define CANVAS_BLKMODE_BIT  24

#define DMC_CAV_LUT_ADDR    0x50 /* 0x14 offset in data sheet */

#define CANVAS_LUT_WR_EN    (0x2 << 8)

#define CANVAS_LUT_RD_EN    (0x1 << 8)

​

void meson_canvas_setup(struct meson_vpu_priv *priv,

            u32 canvas_index, u32 addr,

            u32 stride, u32 height,

            unsigned int wrap,

            unsigned int blkmode)

{

    dmc_write(DMC_CAV_LUT_DATAL,

          (((addr + 7) >> 3)) |

          (((stride + 7) >> 3) << CANVAS_WIDTH_LBIT));

​

    dmc_write(DMC_CAV_LUT_DATAH,

          ((((stride + 7) >> 3) >> CANVAS_WIDTH_LWID) <<

                        CANVAS_WIDTH_HBIT) |

          (height << CANVAS_HEIGHT_BIT) |

          (wrap << 22) |

          (blkmode << CANVAS_BLKMODE_BIT));

​

    dmc_write(DMC_CAV_LUT_ADDR,

          CANVAS_LUT_WR_EN | canvas_index);

​

    /* Force a read-back to make sure everything is flushed. */

    dmc_read(DMC_CAV_LUT_DATAH);

}