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
112
113
|
/* SPDX-License-Identifier: GPL-2.0-only */
#include <console/console.h>
#include <delay.h>
#include <drivers/analogix/anx7625/anx7625.h>
#include <edid.h>
#include <gpio.h>
#include <soc/ddp.h>
#include <soc/dsi.h>
#include <soc/gpio_common.h>
#include <soc/i2c.h>
#include <soc/mtcmos.h>
#include "display.h"
#include "gpio.h"
/* Set up backlight control pins as output pin and power-off by default */
static void configure_backlight_and_bridge(void)
{
/* Disable backlight before turning on bridge */
gpio_output(GPIO_AP_EDP_BKLTEN, 0);
gpio_output(GPIO_BL_PWM_1V8, 0);
gpio_output(GPIO_EN_PP3300_DISP_X, 1);
/* Turn on bridge */
gpio_output(GPIO_EDPBRDG_RST_L, 0);
gpio_output(GPIO_EN_PP1000_EDPBRDG, 1);
gpio_output(GPIO_EN_PP1800_EDPBRDG, 1);
gpio_output(GPIO_EN_PP3300_EDPBRDG, 1);
mdelay(14);
gpio_output(GPIO_EDPBRDG_PWREN, 1);
mdelay(10);
gpio_output(GPIO_EDPBRDG_RST_L, 1);
}
static int anx7625_setup(u8 i2c_bus, struct edid *edid)
{
if (anx7625_init(i2c_bus) < 0) {
printk(BIOS_ERR, "%s: Can't init ANX7625 bridge\n", __func__);
return -1;
}
if (anx7625_dp_get_edid(i2c_bus, edid) < 0) {
printk(BIOS_ERR, "%s: Can't get panel's edid\n", __func__);
return -1;
}
return 0;
}
static int bridge_setup(u8 i2c_bus, struct edid *edid)
{
if (CONFIG(BOARD_GOOGLE_KINGLER_COMMON))
return anx7625_setup(i2c_bus, edid);
else
printk(BIOS_ERR, "%s: There is no bridge IC supported\n", __func__);
return -1;
}
static int bridge_post_poweron(u8 i2c_bus, struct edid *edid)
{
if (CONFIG(BOARD_GOOGLE_KINGLER_COMMON))
return anx7625_dp_start(i2c_bus, edid);
return 0;
}
int configure_display(void)
{
struct edid edid;
const u8 i2c_bus = I2C0;
printk(BIOS_INFO, "%s: Starting display init\n", __func__);
configure_backlight_and_bridge();
mtk_i2c_bus_init(i2c_bus, I2C_SPEED_FAST);
if (bridge_setup(i2c_bus, &edid) < 0) {
printk(BIOS_ERR, "%s: Failed to set bridge\n", __func__);
return -1;
}
const char *name = edid.ascii_string;
if (name[0] == '\0')
name = "unknown name";
printk(BIOS_INFO, "%s: '%s %s' %dx%d@%dHz\n", __func__,
edid.manufacturer_name, name, edid.mode.ha, edid.mode.va,
edid.mode.refresh);
mtcmos_display_power_on();
mtcmos_protect_display_bus();
edid_set_framebuffer_bits_per_pixel(&edid, 32, 0);
mtk_ddp_init();
u32 mipi_dsi_flags = (MIPI_DSI_MODE_VIDEO |
MIPI_DSI_MODE_VIDEO_SYNC_PULSE |
MIPI_DSI_MODE_LPM |
MIPI_DSI_MODE_EOT_PACKET);
if (mtk_dsi_init(mipi_dsi_flags, MIPI_DSI_FMT_RGB888, 4, &edid, NULL) < 0) {
printk(BIOS_ERR, "%s: Failed in DSI init\n", __func__);
return -1;
}
if (bridge_post_poweron(i2c_bus, &edid) < 0) {
printk(BIOS_ERR, "%s: Failed to post poweron bridge\n", __func__);
return -1;
}
mtk_ddp_mode_set(&edid);
fb_new_framebuffer_info_from_edid(&edid, (uintptr_t)0);
return 0;
}
|
