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
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
|
// SPDX-License-Identifier: GPL-2.0
/*
* Power Supply for UCSI
*
* Copyright (C) 2020, Intel Corporation
* Author: K V, Abhilash <abhilash.k.v@intel.com>
* Author: Heikki Krogerus <heikki.krogerus@linux.intel.com>
*/
#include <linux/property.h>
#include <linux/usb/pd.h>
#include "ucsi.h"
/* Power Supply access to expose source power information */
enum ucsi_psy_online_states {
UCSI_PSY_OFFLINE = 0,
UCSI_PSY_FIXED_ONLINE,
UCSI_PSY_PROG_ONLINE,
};
static enum power_supply_property ucsi_psy_props[] = {
POWER_SUPPLY_PROP_USB_TYPE,
POWER_SUPPLY_PROP_ONLINE,
POWER_SUPPLY_PROP_VOLTAGE_MIN,
POWER_SUPPLY_PROP_VOLTAGE_MAX,
POWER_SUPPLY_PROP_VOLTAGE_NOW,
POWER_SUPPLY_PROP_CURRENT_MAX,
POWER_SUPPLY_PROP_CURRENT_NOW,
POWER_SUPPLY_PROP_SCOPE,
};
static int ucsi_psy_get_scope(struct ucsi_connector *con,
union power_supply_propval *val)
{
u8 scope = POWER_SUPPLY_SCOPE_UNKNOWN;
struct device *dev = con->ucsi->dev;
device_property_read_u8(dev, "scope", &scope);
if (scope == POWER_SUPPLY_SCOPE_UNKNOWN) {
u32 mask = UCSI_CAP_ATTR_POWER_AC_SUPPLY |
UCSI_CAP_ATTR_BATTERY_CHARGING;
if (con->ucsi->cap.attributes & mask)
scope = POWER_SUPPLY_SCOPE_SYSTEM;
else
scope = POWER_SUPPLY_SCOPE_DEVICE;
}
val->intval = scope;
return 0;
}
static int ucsi_psy_get_online(struct ucsi_connector *con,
union power_supply_propval *val)
{
val->intval = UCSI_PSY_OFFLINE;
if (con->status.flags & UCSI_CONSTAT_CONNECTED &&
(con->status.flags & UCSI_CONSTAT_PWR_DIR) == TYPEC_SINK)
val->intval = UCSI_PSY_FIXED_ONLINE;
return 0;
}
static int ucsi_psy_get_voltage_min(struct ucsi_connector *con,
union power_supply_propval *val)
{
u32 pdo;
switch (UCSI_CONSTAT_PWR_OPMODE(con->status.flags)) {
case UCSI_CONSTAT_PWR_OPMODE_PD:
pdo = con->src_pdos[0];
val->intval = pdo_fixed_voltage(pdo) * 1000;
break;
case UCSI_CONSTAT_PWR_OPMODE_TYPEC3_0:
case UCSI_CONSTAT_PWR_OPMODE_TYPEC1_5:
case UCSI_CONSTAT_PWR_OPMODE_BC:
case UCSI_CONSTAT_PWR_OPMODE_DEFAULT:
val->intval = UCSI_TYPEC_VSAFE5V * 1000;
break;
default:
val->intval = 0;
break;
}
return 0;
}
static int ucsi_psy_get_voltage_max(struct ucsi_connector *con,
union power_supply_propval *val)
{
u32 pdo;
switch (UCSI_CONSTAT_PWR_OPMODE(con->status.flags)) {
case UCSI_CONSTAT_PWR_OPMODE_PD:
if (con->num_pdos > 0) {
pdo = con->src_pdos[con->num_pdos - 1];
val->intval = pdo_fixed_voltage(pdo) * 1000;
} else {
val->intval = 0;
}
break;
case UCSI_CONSTAT_PWR_OPMODE_TYPEC3_0:
case UCSI_CONSTAT_PWR_OPMODE_TYPEC1_5:
case UCSI_CONSTAT_PWR_OPMODE_BC:
case UCSI_CONSTAT_PWR_OPMODE_DEFAULT:
val->intval = UCSI_TYPEC_VSAFE5V * 1000;
break;
default:
val->intval = 0;
break;
}
return 0;
}
static int ucsi_psy_get_voltage_now(struct ucsi_connector *con,
union power_supply_propval *val)
{
int index;
u32 pdo;
switch (UCSI_CONSTAT_PWR_OPMODE(con->status.flags)) {
case UCSI_CONSTAT_PWR_OPMODE_PD:
index = rdo_index(con->rdo);
if (index > 0) {
pdo = con->src_pdos[index - 1];
val->intval = pdo_fixed_voltage(pdo) * 1000;
} else {
val->intval = 0;
}
break;
case UCSI_CONSTAT_PWR_OPMODE_TYPEC3_0:
case UCSI_CONSTAT_PWR_OPMODE_TYPEC1_5:
case UCSI_CONSTAT_PWR_OPMODE_BC:
case UCSI_CONSTAT_PWR_OPMODE_DEFAULT:
val->intval = UCSI_TYPEC_VSAFE5V * 1000;
break;
default:
val->intval = 0;
break;
}
return 0;
}
static int ucsi_psy_get_current_max(struct ucsi_connector *con,
union power_supply_propval *val)
{
u32 pdo;
switch (UCSI_CONSTAT_PWR_OPMODE(con->status.flags)) {
case UCSI_CONSTAT_PWR_OPMODE_PD:
if (con->num_pdos > 0) {
pdo = con->src_pdos[con->num_pdos - 1];
val->intval = pdo_max_current(pdo) * 1000;
} else {
val->intval = 0;
}
break;
case UCSI_CONSTAT_PWR_OPMODE_TYPEC1_5:
val->intval = UCSI_TYPEC_1_5_CURRENT * 1000;
break;
case UCSI_CONSTAT_PWR_OPMODE_TYPEC3_0:
val->intval = UCSI_TYPEC_3_0_CURRENT * 1000;
break;
case UCSI_CONSTAT_PWR_OPMODE_BC:
case UCSI_CONSTAT_PWR_OPMODE_DEFAULT:
/* UCSI can't tell b/w DCP/CDP or USB2/3x1/3x2 SDP chargers */
default:
val->intval = 0;
break;
}
return 0;
}
static int ucsi_psy_get_current_now(struct ucsi_connector *con,
union power_supply_propval *val)
{
u16 flags = con->status.flags;
if (UCSI_CONSTAT_PWR_OPMODE(flags) == UCSI_CONSTAT_PWR_OPMODE_PD)
val->intval = rdo_op_current(con->rdo) * 1000;
else
val->intval = 0;
return 0;
}
static int ucsi_psy_get_usb_type(struct ucsi_connector *con,
union power_supply_propval *val)
{
u16 flags = con->status.flags;
val->intval = POWER_SUPPLY_USB_TYPE_C;
if (flags & UCSI_CONSTAT_CONNECTED &&
UCSI_CONSTAT_PWR_OPMODE(flags) == UCSI_CONSTAT_PWR_OPMODE_PD)
val->intval = POWER_SUPPLY_USB_TYPE_PD;
return 0;
}
static int ucsi_psy_get_prop(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
{
struct ucsi_connector *con = power_supply_get_drvdata(psy);
switch (psp) {
case POWER_SUPPLY_PROP_USB_TYPE:
return ucsi_psy_get_usb_type(con, val);
case POWER_SUPPLY_PROP_ONLINE:
return ucsi_psy_get_online(con, val);
case POWER_SUPPLY_PROP_VOLTAGE_MIN:
return ucsi_psy_get_voltage_min(con, val);
case POWER_SUPPLY_PROP_VOLTAGE_MAX:
return ucsi_psy_get_voltage_max(con, val);
case POWER_SUPPLY_PROP_VOLTAGE_NOW:
return ucsi_psy_get_voltage_now(con, val);
case POWER_SUPPLY_PROP_CURRENT_MAX:
return ucsi_psy_get_current_max(con, val);
case POWER_SUPPLY_PROP_CURRENT_NOW:
return ucsi_psy_get_current_now(con, val);
case POWER_SUPPLY_PROP_SCOPE:
return ucsi_psy_get_scope(con, val);
default:
return -EINVAL;
}
}
static enum power_supply_usb_type ucsi_psy_usb_types[] = {
POWER_SUPPLY_USB_TYPE_C,
POWER_SUPPLY_USB_TYPE_PD,
POWER_SUPPLY_USB_TYPE_PD_PPS,
};
int ucsi_register_port_psy(struct ucsi_connector *con)
{
struct power_supply_config psy_cfg = {};
struct device *dev = con->ucsi->dev;
char *psy_name;
psy_cfg.drv_data = con;
psy_cfg.fwnode = dev_fwnode(dev);
psy_name = devm_kasprintf(dev, GFP_KERNEL, "ucsi-source-psy-%s%d",
dev_name(dev), con->num);
if (!psy_name)
return -ENOMEM;
con->psy_desc.name = psy_name;
con->psy_desc.type = POWER_SUPPLY_TYPE_USB;
con->psy_desc.usb_types = ucsi_psy_usb_types;
con->psy_desc.num_usb_types = ARRAY_SIZE(ucsi_psy_usb_types);
con->psy_desc.properties = ucsi_psy_props;
con->psy_desc.num_properties = ARRAY_SIZE(ucsi_psy_props);
con->psy_desc.get_property = ucsi_psy_get_prop;
con->psy = power_supply_register(dev, &con->psy_desc, &psy_cfg);
return PTR_ERR_OR_ZERO(con->psy);
}
void ucsi_unregister_port_psy(struct ucsi_connector *con)
{
if (IS_ERR_OR_NULL(con->psy))
return;
power_supply_unregister(con->psy);
con->psy = NULL;
}
void ucsi_port_psy_changed(struct ucsi_connector *con)
{
if (IS_ERR_OR_NULL(con->psy))
return;
power_supply_changed(con->psy);
}
|
