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// 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);
}
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