1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * Copyright (c) 2017 Rockchip Electronics Co. Ltd.
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Author: Wyon Bi <bivvy.bi@rock-chips.com>
6*4882a593Smuzhiyun */
7*4882a593Smuzhiyun
8*4882a593Smuzhiyun #include <linux/module.h>
9*4882a593Smuzhiyun #include "rk618_dither.h"
10*4882a593Smuzhiyun
11*4882a593Smuzhiyun #define RK618_FRC_REG 0x0054
12*4882a593Smuzhiyun #define FRC_DEN_INV HIWORD_UPDATE(1, 6, 6)
13*4882a593Smuzhiyun #define FRC_SYNC_INV HIWORD_UPDATE(1, 5, 5)
14*4882a593Smuzhiyun #define FRC_DCLK_INV HIWORD_UPDATE(1, 4, 4)
15*4882a593Smuzhiyun #define FRC_OUT_ZERO HIWORD_UPDATE(1, 3, 3)
16*4882a593Smuzhiyun #define FRC_OUT_MODE_RGB666 HIWORD_UPDATE(1, 2, 2)
17*4882a593Smuzhiyun #define FRC_OUT_MODE_RGB888 HIWORD_UPDATE(0, 2, 2)
18*4882a593Smuzhiyun #define FRC_DITHER_MODE_HI_FRC HIWORD_UPDATE(1, 1, 1)
19*4882a593Smuzhiyun #define FRC_DITHER_MODE_FRC HIWORD_UPDATE(0, 1, 1)
20*4882a593Smuzhiyun #define FRC_DITHER_ENABLE HIWORD_UPDATE(1, 0, 0)
21*4882a593Smuzhiyun #define FRC_DITHER_DISABLE HIWORD_UPDATE(0, 0, 0)
22*4882a593Smuzhiyun
rk618_frc_dither_init(struct rk618 * rk618,u32 bus_format)23*4882a593Smuzhiyun void rk618_frc_dither_init(struct rk618 *rk618, u32 bus_format)
24*4882a593Smuzhiyun {
25*4882a593Smuzhiyun u32 val;
26*4882a593Smuzhiyun
27*4882a593Smuzhiyun switch (bus_format) {
28*4882a593Smuzhiyun case MEDIA_BUS_FMT_RGB666_1X18:
29*4882a593Smuzhiyun case MEDIA_BUS_FMT_RGB666_1X7X3_SPWG:
30*4882a593Smuzhiyun val = FRC_OUT_MODE_RGB666 | FRC_DITHER_DISABLE;
31*4882a593Smuzhiyun break;
32*4882a593Smuzhiyun case MEDIA_BUS_FMT_RGB666_1X24_CPADHI:
33*4882a593Smuzhiyun val = FRC_OUT_MODE_RGB888 | FRC_DITHER_ENABLE;
34*4882a593Smuzhiyun break;
35*4882a593Smuzhiyun case MEDIA_BUS_FMT_RGB888_1X24:
36*4882a593Smuzhiyun case MEDIA_BUS_FMT_RGB888_1X7X4_JEIDA:
37*4882a593Smuzhiyun case MEDIA_BUS_FMT_RGB888_1X7X4_SPWG:
38*4882a593Smuzhiyun default:
39*4882a593Smuzhiyun val = FRC_OUT_MODE_RGB888 | FRC_DITHER_DISABLE;
40*4882a593Smuzhiyun break;
41*4882a593Smuzhiyun }
42*4882a593Smuzhiyun
43*4882a593Smuzhiyun regmap_write(rk618->regmap, RK618_FRC_REG, val);
44*4882a593Smuzhiyun }
45*4882a593Smuzhiyun EXPORT_SYMBOL_GPL(rk618_frc_dither_init);
46*4882a593Smuzhiyun
rk618_frc_dclk_invert(struct rk618 * rk618)47*4882a593Smuzhiyun void rk618_frc_dclk_invert(struct rk618 *rk618)
48*4882a593Smuzhiyun {
49*4882a593Smuzhiyun regmap_write(rk618->regmap, RK618_FRC_REG, FRC_DCLK_INV);
50*4882a593Smuzhiyun }
51*4882a593Smuzhiyun EXPORT_SYMBOL_GPL(rk618_frc_dclk_invert);
52*4882a593Smuzhiyun
53*4882a593Smuzhiyun MODULE_LICENSE("GPL");
54