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
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
|
// SPDX-License-Identifier: GPL-2.0-only OR BSD-3-Clause
/*
* Copyright 2023 Schweitzer Engineering Laboratories, Inc.
* 2350 NE Hopkins Court, Pullman, WA 99163 USA
*
* Platform support for the b2093 mainboard used in SEL-3350 computers.
* Consumes GPIO from the SoC to provide standard LED and power supply
* devices.
*/
#include <linux/acpi.h>
#include <linux/gpio/consumer.h>
#include <linux/gpio/machine.h>
#include <linux/leds.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/power_supply.h>
/* Broxton communities */
#define BXT_NW "INT3452:01"
#define BXT_W "INT3452:02"
#define BXT_SW "INT3452:03"
#define B2093_GPIO_ACPI_ID "SEL0003"
#define SEL_PS_A "sel_ps_a"
#define SEL_PS_A_DETECT "sel_ps_a_detect"
#define SEL_PS_A_GOOD "sel_ps_a_good"
#define SEL_PS_B "sel_ps_b"
#define SEL_PS_B_DETECT "sel_ps_b_detect"
#define SEL_PS_B_GOOD "sel_ps_b_good"
/* LEDs */
static const struct gpio_led sel3350_leds[] = {
{ .name = "sel:green:aux1" },
{ .name = "sel:green:aux2" },
{ .name = "sel:green:aux3" },
{ .name = "sel:green:aux4" },
{ .name = "sel:red:alarm" },
{ .name = "sel:green:enabled",
.default_state = LEDS_GPIO_DEFSTATE_ON },
{ .name = "sel:red:aux1" },
{ .name = "sel:red:aux2" },
{ .name = "sel:red:aux3" },
{ .name = "sel:red:aux4" },
};
static const struct gpio_led_platform_data sel3350_leds_pdata = {
.num_leds = ARRAY_SIZE(sel3350_leds),
.leds = sel3350_leds,
};
/* Map GPIOs to LEDs */
static struct gpiod_lookup_table sel3350_leds_table = {
.dev_id = "leds-gpio",
.table = {
GPIO_LOOKUP_IDX(BXT_NW, 49, NULL, 0, GPIO_ACTIVE_HIGH),
GPIO_LOOKUP_IDX(BXT_NW, 50, NULL, 1, GPIO_ACTIVE_HIGH),
GPIO_LOOKUP_IDX(BXT_NW, 51, NULL, 2, GPIO_ACTIVE_HIGH),
GPIO_LOOKUP_IDX(BXT_NW, 52, NULL, 3, GPIO_ACTIVE_HIGH),
GPIO_LOOKUP_IDX(BXT_W, 20, NULL, 4, GPIO_ACTIVE_HIGH),
GPIO_LOOKUP_IDX(BXT_W, 21, NULL, 5, GPIO_ACTIVE_HIGH),
GPIO_LOOKUP_IDX(BXT_SW, 37, NULL, 6, GPIO_ACTIVE_HIGH),
GPIO_LOOKUP_IDX(BXT_SW, 38, NULL, 7, GPIO_ACTIVE_HIGH),
GPIO_LOOKUP_IDX(BXT_SW, 39, NULL, 8, GPIO_ACTIVE_HIGH),
GPIO_LOOKUP_IDX(BXT_SW, 40, NULL, 9, GPIO_ACTIVE_HIGH),
{},
}
};
/* Map GPIOs to power supplies */
static struct gpiod_lookup_table sel3350_gpios_table = {
.dev_id = B2093_GPIO_ACPI_ID ":00",
.table = {
GPIO_LOOKUP(BXT_NW, 44, SEL_PS_A_DETECT, GPIO_ACTIVE_LOW),
GPIO_LOOKUP(BXT_NW, 45, SEL_PS_A_GOOD, GPIO_ACTIVE_LOW),
GPIO_LOOKUP(BXT_NW, 46, SEL_PS_B_DETECT, GPIO_ACTIVE_LOW),
GPIO_LOOKUP(BXT_NW, 47, SEL_PS_B_GOOD, GPIO_ACTIVE_LOW),
{},
}
};
/* Power Supplies */
struct sel3350_power_cfg_data {
struct gpio_desc *ps_detect;
struct gpio_desc *ps_good;
};
static int sel3350_power_get_property(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
{
struct sel3350_power_cfg_data *data = power_supply_get_drvdata(psy);
switch (psp) {
case POWER_SUPPLY_PROP_HEALTH:
if (gpiod_get_value(data->ps_detect)) {
if (gpiod_get_value(data->ps_good))
val->intval = POWER_SUPPLY_HEALTH_GOOD;
else
val->intval = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;
} else {
val->intval = POWER_SUPPLY_HEALTH_UNKNOWN;
}
break;
case POWER_SUPPLY_PROP_PRESENT:
val->intval = gpiod_get_value(data->ps_detect);
break;
case POWER_SUPPLY_PROP_ONLINE:
val->intval = gpiod_get_value(data->ps_good);
break;
default:
return -EINVAL;
}
return 0;
}
static const enum power_supply_property sel3350_power_properties[] = {
POWER_SUPPLY_PROP_HEALTH,
POWER_SUPPLY_PROP_PRESENT,
POWER_SUPPLY_PROP_ONLINE,
};
static const struct power_supply_desc sel3350_ps_a_desc = {
.name = SEL_PS_A,
.type = POWER_SUPPLY_TYPE_MAINS,
.properties = sel3350_power_properties,
.num_properties = ARRAY_SIZE(sel3350_power_properties),
.get_property = sel3350_power_get_property,
};
static const struct power_supply_desc sel3350_ps_b_desc = {
.name = SEL_PS_B,
.type = POWER_SUPPLY_TYPE_MAINS,
.properties = sel3350_power_properties,
.num_properties = ARRAY_SIZE(sel3350_power_properties),
.get_property = sel3350_power_get_property,
};
struct sel3350_data {
struct platform_device *leds_pdev;
struct power_supply *ps_a;
struct power_supply *ps_b;
struct sel3350_power_cfg_data ps_a_cfg_data;
struct sel3350_power_cfg_data ps_b_cfg_data;
};
static int sel3350_probe(struct platform_device *pdev)
{
int rs;
struct sel3350_data *sel3350;
struct power_supply_config ps_cfg = {};
sel3350 = devm_kzalloc(&pdev->dev, sizeof(struct sel3350_data), GFP_KERNEL);
if (!sel3350)
return -ENOMEM;
platform_set_drvdata(pdev, sel3350);
gpiod_add_lookup_table(&sel3350_leds_table);
gpiod_add_lookup_table(&sel3350_gpios_table);
sel3350->leds_pdev = platform_device_register_data(
NULL,
"leds-gpio",
PLATFORM_DEVID_NONE,
&sel3350_leds_pdata,
sizeof(sel3350_leds_pdata));
if (IS_ERR(sel3350->leds_pdev)) {
rs = PTR_ERR(sel3350->leds_pdev);
dev_err(&pdev->dev, "Failed registering platform device: %d\n", rs);
goto err_platform;
}
/* Power Supply A */
sel3350->ps_a_cfg_data.ps_detect = devm_gpiod_get(&pdev->dev,
SEL_PS_A_DETECT,
GPIOD_IN);
sel3350->ps_a_cfg_data.ps_good = devm_gpiod_get(&pdev->dev,
SEL_PS_A_GOOD,
GPIOD_IN);
ps_cfg.drv_data = &sel3350->ps_a_cfg_data;
sel3350->ps_a = devm_power_supply_register(&pdev->dev,
&sel3350_ps_a_desc,
&ps_cfg);
if (IS_ERR(sel3350->ps_a)) {
rs = PTR_ERR(sel3350->ps_a);
dev_err(&pdev->dev, "Failed registering power supply A: %d\n", rs);
goto err_ps;
}
/* Power Supply B */
sel3350->ps_b_cfg_data.ps_detect = devm_gpiod_get(&pdev->dev,
SEL_PS_B_DETECT,
GPIOD_IN);
sel3350->ps_b_cfg_data.ps_good = devm_gpiod_get(&pdev->dev,
SEL_PS_B_GOOD,
GPIOD_IN);
ps_cfg.drv_data = &sel3350->ps_b_cfg_data;
sel3350->ps_b = devm_power_supply_register(&pdev->dev,
&sel3350_ps_b_desc,
&ps_cfg);
if (IS_ERR(sel3350->ps_b)) {
rs = PTR_ERR(sel3350->ps_b);
dev_err(&pdev->dev, "Failed registering power supply B: %d\n", rs);
goto err_ps;
}
return 0;
err_ps:
platform_device_unregister(sel3350->leds_pdev);
err_platform:
gpiod_remove_lookup_table(&sel3350_gpios_table);
gpiod_remove_lookup_table(&sel3350_leds_table);
return rs;
}
static void sel3350_remove(struct platform_device *pdev)
{
struct sel3350_data *sel3350 = platform_get_drvdata(pdev);
platform_device_unregister(sel3350->leds_pdev);
gpiod_remove_lookup_table(&sel3350_gpios_table);
gpiod_remove_lookup_table(&sel3350_leds_table);
}
static const struct acpi_device_id sel3350_device_ids[] = {
{ B2093_GPIO_ACPI_ID, 0 },
{ "", 0 },
};
MODULE_DEVICE_TABLE(acpi, sel3350_device_ids);
static struct platform_driver sel3350_platform_driver = {
.probe = sel3350_probe,
.remove = sel3350_remove,
.driver = {
.name = "sel3350-platform",
.acpi_match_table = sel3350_device_ids,
},
};
module_platform_driver(sel3350_platform_driver);
MODULE_AUTHOR("Schweitzer Engineering Laboratories");
MODULE_DESCRIPTION("SEL-3350 platform driver");
MODULE_LICENSE("Dual BSD/GPL");
MODULE_SOFTDEP("pre: pinctrl_broxton leds-gpio");
|
