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
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
|
/* Copyright 2021 The ChromiumOS Authors
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "gpio/gpio.h"
#include "soc_gpio.h"
#include "util.h"
#include <zephyr/device.h>
#include <zephyr/drivers/gpio.h>
#include <zephyr/kernel.h>
#include <zephyr/logging/log.h>
#include <zephyr/shell/shell.h>
LOG_MODULE_REGISTER(shim_cros_gpio, LOG_LEVEL_ERR);
static const struct unused_pin_config unused_pin_configs[] = {
UNUSED_GPIO_CONFIG_LIST
};
int gpio_config_unused_pins(void)
{
for (size_t i = 0; i < ARRAY_SIZE(unused_pin_configs); ++i) {
int rv;
int flags;
const struct device *dev =
device_get_binding(unused_pin_configs[i].dev_name);
if (dev == NULL) {
LOG_ERR("Not found (%s)",
unused_pin_configs[i].dev_name);
return -ENOTSUP;
}
/*
* Set the default setting for the floating IOs. The floating
* IOs cause the leakage current. Set unused pins as input with
* internal PU to prevent extra power consumption.
*/
if (unused_pin_configs[i].flags == 0)
flags = GPIO_INPUT | GPIO_PULL_UP;
else
flags = unused_pin_configs[i].flags;
rv = gpio_pin_configure(dev, unused_pin_configs[i].pin, flags);
if (rv < 0) {
LOG_ERR("Config failed %s-%d (%d)",
unused_pin_configs[i].dev_name,
unused_pin_configs[i].pin, rv);
return rv;
}
}
return 0;
}
int gpio_configure_port_pin(int port, int id, int flags)
{
const struct device *dev = npcx_get_gpio_dev(port);
return gpio_pin_configure(dev, id, flags);
}
#ifdef CONFIG_PLATFORM_EC_CONSOLE_CMD_GPIODBG
/*
* IO information about each GPIO that is configured in the `named_gpios` and
*` unused_pins` device tree nodes.
*/
struct npcx_io_info {
/* A npcx gpio port device */
const struct device *dev;
/* A npcx gpio port number */
int port;
/* Bit number of pin within a npcx gpio port */
gpio_pin_t pin;
/* GPIO net name */
const char *name;
/* Enable flag of npcx gpio input buffer */
bool enable;
};
#define NAMED_GPIO_INFO(node) \
{ \
.dev = DEVICE_DT_GET(DT_GPIO_CTLR(node, gpios)), \
.port = DT_PROP(DT_GPIO_CTLR(node, gpios), index), \
.pin = DT_GPIO_PIN(node, gpios), \
.name = DT_NODE_FULL_NAME(node), \
.enable = true, \
},
#define UNUSED_GPIO_INFO(node, prop, idx) \
{ \
.dev = DEVICE_DT_GET(DT_GPIO_CTLR_BY_IDX(node, prop, idx)), \
.port = DT_PROP(DT_GPIO_CTLR_BY_IDX(node, prop, idx), index), \
.pin = DT_GPIO_PIN_BY_IDX(node, prop, idx), \
.name = "unused pin", \
.enable = true, \
},
#define NAMED_GPIO_INIT(node) \
COND_CODE_1(DT_NODE_HAS_PROP(node, gpios), (NAMED_GPIO_INFO(node)), ())
static struct npcx_io_info gpio_info[] = {
#if DT_NODE_EXISTS(DT_PATH(named_gpios))
DT_FOREACH_CHILD(DT_PATH(named_gpios), NAMED_GPIO_INIT)
#endif
#if DT_NODE_EXISTS(DT_PATH(unused_pins))
DT_FOREACH_PROP_ELEM(DT_PATH(unused_pins), unused_gpios,
UNUSED_GPIO_INFO)
#endif
};
static int get_index_from_arg(const struct shell *sh, char **argv, int *index)
{
char *end_ptr;
int num = strtol(argv[1], &end_ptr, 0);
const int gpio_cnt = ARRAY_SIZE(gpio_info);
if (*end_ptr != '\0') {
shell_error(sh, "Failed to parse %s", argv[1]);
return -EINVAL;
}
if (num >= gpio_cnt) {
shell_error(sh, "Index shall be less than %u, was %u", gpio_cnt,
num);
return -EINVAL;
}
*index = num;
return 0;
}
static int cmd_gpio_list_all(const struct shell *sh, size_t argc, char **argv)
{
ARG_UNUSED(argc);
ARG_UNUSED(argv);
/* Print header */
shell_print(sh, "IDX|ON| GPIO | Name");
shell_print(sh, "---+--+------+----------");
/* List all GPIOs in 'named-gpios' and 'unused_pins' DT nodes */
for (int i = 0; i < ARRAY_SIZE(gpio_info); i++) {
shell_print(sh, "%02d |%s | io%x%x | %s", i,
gpio_info[i].enable ? "*" : " ", gpio_info[i].port,
gpio_info[i].pin, gpio_info[i].name);
}
return 0;
}
static int cmd_gpio_turn_on(const struct shell *sh, size_t argc, char **argv)
{
int index;
int res = get_index_from_arg(sh, argv, &index);
if (res < 0) {
return res;
}
/* Turn on GPIO's input buffer by index */
gpio_info[index].enable = true;
npcx_gpio_enable_io_pads(gpio_info[index].dev, gpio_info[index].pin);
return 0;
}
static int cmd_gpio_turn_off(const struct shell *sh, size_t argc, char **argv)
{
int index;
int res = get_index_from_arg(sh, argv, &index);
if (res < 0) {
return res;
}
/* Turn off GPIO's input buffer by index */
gpio_info[index].enable = false;
npcx_gpio_disable_io_pads(gpio_info[index].dev, gpio_info[index].pin);
return 0;
}
SHELL_STATIC_SUBCMD_SET_CREATE(
sub_gpiodbg,
SHELL_CMD_ARG(list, NULL, "List all GPIOs used on platform by index",
cmd_gpio_list_all, 1, 0),
SHELL_CMD_ARG(on, NULL, "<index_in_list> Turn on GPIO's input buffer",
cmd_gpio_turn_on, 2, 0),
SHELL_CMD_ARG(off, NULL, "<index_in_list> Turn off GPIO's input buffer",
cmd_gpio_turn_off, 2, 0),
SHELL_SUBCMD_SET_END /* Array terminated. */
);
SHELL_CMD_ARG_REGISTER(gpiodbg, &sub_gpiodbg,
"Commands for power consumption "
"investigation",
NULL, 2, 0);
#endif /* CONFIG_PLATFORM_EC_CONSOLE_CMD_GPIODBG */
|
