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
|
/* SPDX-License-Identifier: GPL-2.0-or-later */
#include <acpi/acpigen.h>
#include <console/console.h>
#include <intelblocks/acpi.h>
#include "chip.h"
static const char *conn_acpi_name(const struct device *dev)
{
static char name[5];
snprintf(name, sizeof(name), "CON%1X", dev->path.generic.id);
return name;
}
static const char *orientation_to_str(enum typec_orientation ori)
{
switch (ori) {
case TYPEC_ORIENTATION_NORMAL:
return "normal";
case TYPEC_ORIENTATION_REVERSE:
return "reverse";
case TYPEC_ORIENTATION_FOLLOW_CC: /* Intentional fallthrough */
default:
return "";
}
}
static void conn_fill_ssdt(const struct device *dev)
{
struct drivers_intel_pmc_mux_conn_config *config = dev->chip_info;
struct acpi_dp *dsd;
const char *scope;
const char *name;
if (!dev->enabled)
return;
/* Reference the existing scope and write CONx device */
scope = acpi_device_scope(dev);
name = acpi_device_name(dev);
if (!scope || !name)
return;
acpigen_write_scope(scope);
acpigen_write_device(name);
acpigen_write_name_integer("_ADR", dev->path.generic.id);
/* _DSD, Device-Specific Data */
dsd = acpi_dp_new_table("_DSD");
acpi_dp_add_integer(dsd, "usb2-port-number", config->usb2_port_number);
acpi_dp_add_integer(dsd, "usb3-port-number", config->usb3_port_number);
/*
* The kernel assumes that these Type-C signals (SBUs and HSLs) follow the CC lines,
* unless they are explicitly called out otherwise.
*/
if (config->sbu_orientation != TYPEC_ORIENTATION_FOLLOW_CC)
acpi_dp_add_string(dsd, "sbu-orientation",
orientation_to_str(config->sbu_orientation));
if (config->hsl_orientation != TYPEC_ORIENTATION_FOLLOW_CC)
acpi_dp_add_string(dsd, "hsl-orientation",
orientation_to_str(config->hsl_orientation));
acpi_dp_write(dsd);
acpigen_pop_len(); /* CONx Device */
acpigen_pop_len(); /* Scope */
printk(BIOS_INFO, "%s: %s at %s\n", acpi_device_path(dev), dev->chip_ops->name,
dev_path(dev));
}
static struct device_operations conn_dev_ops = {
.read_resources = noop_read_resources,
.set_resources = noop_set_resources,
.acpi_name = conn_acpi_name,
.acpi_fill_ssdt = conn_fill_ssdt,
};
static void conn_enable(struct device *dev)
{
dev->ops = &conn_dev_ops;
}
struct chip_operations drivers_intel_pmc_mux_conn_ops = {
CHIP_NAME("Intel PMC MUX CONN Driver")
.enable_dev = conn_enable,
};
|
