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
|
/* SPDX-License-Identifier: GPL-2.0-only */
#include <boardid.h>
#include <cbfs.h>
#include <console/console.h>
#include <device/i2c_simple.h>
#include <edid.h>
#include <gpio.h>
#include <soc/gpio_common.h>
#include <string.h>
#include "gpio.h"
#include "panel.h"
int panel_pmic_reg_mask(u32 bus, u8 chip, u8 addr, u8 val, u8 mask)
{
u8 msg = 0;
if (i2c_read_field(bus, chip, addr, &msg, 0xFF, 0) < 0) {
printk(BIOS_ERR, "Failed to read i2c: addr(%u)\n", addr);
return -1;
}
msg &= ~mask;
msg |= val;
return i2c_write_field(bus, chip, addr, msg, 0xFF, 0);
}
static void get_mipi_cmd_from_cbfs(struct panel_description *desc)
{
/*
* The CBFS file name is panel-{MANUFACTURER}-${PANEL_NAME}, where MANUFACTURER is 3
* characters and PANEL_NAME is usually 13 characters.
*/
char cbfs_name[64];
static union {
u8 raw[4 * 1024]; /* Most panels only need < 2K. */
struct panel_serializable_data s;
} buffer;
if (!desc->name) {
printk(BIOS_ERR, "Missing panel CBFS file name.\n");
return;
}
snprintf(cbfs_name, sizeof(cbfs_name), "panel-%s", desc->name);
if (cbfs_load(cbfs_name, buffer.raw, sizeof(buffer)))
desc->s = &buffer.s;
else
printk(BIOS_ERR, "Missing %s in CBFS.\n", cbfs_name);
}
struct panel_description *get_active_panel(void)
{
uint32_t active_panel_id = panel_id();
struct panel_description *panel = get_panel_description(active_panel_id);
if (!panel || panel->disp_path == DISP_PATH_NONE) {
printk(BIOS_ERR, "%s: Panel %u is not supported.\n", __func__, active_panel_id);
return NULL;
}
/* For eDP, we will get edid after eDP initialization is done, so we return directly. */
if (panel->disp_path == DISP_PATH_EDP) {
printk(BIOS_INFO, "%s: Use eDP as the display\n", __func__);
return panel;
}
/* We need to find init cmds for MIPI panel from CBFS */
get_mipi_cmd_from_cbfs(panel);
if (!panel->s)
return NULL;
const struct edid *edid = &panel->s->edid;
const char *name = edid->ascii_string;
if (name[0] == '\0') {
name = "unknown name";
printk(BIOS_INFO, "%s: Found ID %u: '%s %s' %dx%d@%dHz\n", __func__,
active_panel_id, edid->manufacturer_name, name, edid->mode.ha,
edid->mode.va, edid->mode.refresh);
}
return panel;
}
|
