1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
|
/*
* This file is part of the coreboot project.
*
* Copyright 2016 Rockchip Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <arch/cache.h>
#include <arch/mmu.h>
#include <arch/io.h>
#include <console/console.h>
#include <device/device.h>
#include <delay.h>
#include <edid.h>
#include <gpio.h>
#include <stdlib.h>
#include <stddef.h>
#include <string.h>
#include <soc/addressmap.h>
#include <soc/clock.h>
#include <soc/display.h>
#include <soc/edp.h>
#include <soc/gpio.h>
#include <soc/grf.h>
#include <soc/mmu_operations.h>
#include <soc/soc.h>
#include <soc/vop.h>
#include "chip.h"
void rk_display_init(device_t dev)
{
struct edid edid;
struct soc_rockchip_rk3399_config *conf = dev->chip_info;
enum vop_modes detected_mode = VOP_MODE_UNKNOWN;
/* let's use vop0 in rk3399 */
uint32_t vop_id = 0;
switch (conf->vop_mode) {
case VOP_MODE_NONE:
return;
case VOP_MODE_AUTO_DETECT:
/* try EDP first, then HDMI */
case VOP_MODE_EDP:
printk(BIOS_DEBUG, "Attempting to set up EDP display.\n");
rkclk_configure_vop_aclk(vop_id, 192 * MHz);
/* select edp signal from vop0 */
write32(&rk3399_grf->soc_con20, RK_CLRBITS(1 << 5));
/* select edp clk from SoC internal 24M crystal, otherwise,
* it will source from edp's 24M clock (that depends on
* edp vendor, could be unstable)
*/
write32(&rk3399_grf->soc_con25, RK_SETBITS(1 << 11));
rk_edp_init();
if (rk_edp_get_edid(&edid) == 0) {
detected_mode = VOP_MODE_EDP;
break;
}
printk(BIOS_WARNING, "Cannot get EDID from EDP.\n");
if (conf->vop_mode == VOP_MODE_EDP)
return;
/* fall thru */
case VOP_MODE_HDMI:
printk(BIOS_WARNING, "HDMI display is NOT supported yet.\n");
return;
default:
printk(BIOS_WARNING, "Cannot read any EDID info, aborting.\n");
return;
}
if (rkclk_configure_vop_dclk(vop_id,
edid.mode.pixel_clock * KHz)) {
printk(BIOS_WARNING, "config vop err\n");
return;
}
edid_set_framebuffer_bits_per_pixel(&edid,
conf->framebuffer_bits_per_pixel, 0);
rkvop_mode_set(vop_id, &edid, detected_mode);
rkvop_prepare(vop_id, &edid);
switch (detected_mode) {
case VOP_MODE_HDMI:
/* should not be here before HDMI supported */
return;
case VOP_MODE_EDP:
default:
if (rk_edp_enable()) {
printk(BIOS_WARNING, "edp enable error\n");
return;
}
mainboard_power_on_backlight();
break;
}
set_vbe_mode_info_valid(&edid, (uintptr_t)0);
}
|
