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
274
275
276
277
278
279
|
/* Copyright 2021 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include <device.h>
#include <devicetree/gpio.h>
#include <drivers/gpio/gpio_emul.h>
#include <zephyr.h>
#include <ztest.h>
#include <ztest_assert.h>
#include "emul/emul_syv682x.h"
#include "stubs.h"
#include "syv682x.h"
#include "timer.h"
#include "usbc_ppc.h"
#define SYV682X_ORD DT_DEP_ORD(DT_NODELABEL(syv682x_emul))
#define GPIO_USB_C1_FRS_EN_PATH DT_PATH(named_gpios, usb_c1_frs_en)
#define GPIO_USB_C1_FRS_EN_PORT DT_GPIO_PIN(GPIO_USB_C1_FRS_EN_PATH, gpios)
static const int syv682x_port = 1;
static void test_ppc_syv682x_vbus_enable(void)
{
struct i2c_emul *emul = syv682x_emul_get(SYV682X_ORD);
uint8_t reg;
zassert_ok(syv682x_emul_get_reg(emul, SYV682X_CONTROL_1_REG, ®),
"Reading CONTROL_1 failed");
zassert_equal(reg & SYV682X_CONTROL_1_PWR_ENB,
SYV682X_CONTROL_1_PWR_ENB, "VBUS sourcing disabled");
zassert_false(ppc_is_sourcing_vbus(syv682x_port),
"PPC sourcing VBUS at beginning of test");
zassert_ok(ppc_vbus_source_enable(syv682x_port, true),
"VBUS enable failed");
zassert_ok(syv682x_emul_get_reg(emul, SYV682X_CONTROL_1_REG, ®),
"Reading CONTROL_1 failed");
zassert_equal(reg & SYV682X_CONTROL_1_PWR_ENB, 0,
"VBUS sourcing disabled");
zassert_true(ppc_is_sourcing_vbus(syv682x_port),
"PPC is not sourcing VBUS after VBUS enabled");
}
static void test_ppc_syv682x_interrupt(void)
{
struct i2c_emul *emul = syv682x_emul_get(SYV682X_ORD);
uint8_t reg;
/* An OC event less than 100 ms should not cause VBUS to turn off. */
syv682x_emul_set_status(emul, SYV682X_STATUS_OC_5V);
syv682x_interrupt(syv682x_port);
/* TODO(b/201420132): Simulate passage of time instead of sleeping. */
msleep(50);
syv682x_interrupt(syv682x_port);
zassert_true(ppc_is_sourcing_vbus(syv682x_port),
"PPC is not sourcing VBUS after 50 ms OC");
/* But one greater than 100 ms should. */
/* TODO(b/201420132): Simulate passage of time instead of sleeping. */
msleep(60);
syv682x_interrupt(syv682x_port);
zassert_false(ppc_is_sourcing_vbus(syv682x_port),
"PPC is sourcing VBUS after 100 ms OC");
syv682x_emul_set_status(emul, 0x0);
/*
* TODO(b/190519131): Organize the tests to be more hermetic and avoid
* the following issue: The driver triggers overcurrent protection. If
* overcurrent protection is triggered 3 times, the TC won't turn the
* port back on without a detach. This could frustrate efforts to test
* the TC.
*/
/*
* A TSD event should cause the driver to disable source and sink paths.
* (The device will have already physically disabled them.) The state of
* the sink path is not part of the driver's API.
*/
zassert_ok(ppc_vbus_source_enable(syv682x_port, true),
"Source enable failed");
syv682x_emul_set_status(emul, SYV682X_STATUS_TSD);
syv682x_interrupt(syv682x_port);
/* TODO(b/201420132): Simulate passage of time instead of sleeping. */
msleep(1);
zassert_false(ppc_is_sourcing_vbus(syv682x_port),
"PPC is sourcing power after TSD");
syv682x_emul_set_status(emul, 0);
/* An OVP event should cause the driver to disable the source path. */
zassert_ok(ppc_vbus_source_enable(syv682x_port, true),
"Source enable failed");
syv682x_emul_set_status(emul, SYV682X_STATUS_OVP);
syv682x_interrupt(syv682x_port);
/* TODO(b/201420132): Simulate passage of time instead of sleeping. */
msleep(1);
zassert_false(ppc_is_sourcing_vbus(syv682x_port),
"PPC is sourcing power after OVP");
syv682x_emul_set_status(emul, 0);
/*
* A high-voltage OC while sinking should cause the driver to try to
* re-enable the sink path until the OC count limit is reached, at which
* point the driver should leave it disabled.
*/
zassert_ok(ppc_vbus_sink_enable(syv682x_port, true),
"Sink enable failed");
syv682x_emul_set_status(emul, SYV682X_STATUS_OC_HV);
syv682x_interrupt(syv682x_port);
/* TODO(b/201420132): Simulate passage of time instead of sleeping. */
msleep(1);
zassert_ok(syv682x_emul_get_reg(emul, SYV682X_CONTROL_1_REG, ®),
"Reading CONTROL_1 failed");
zassert_equal(reg & SYV682X_CONTROL_1_PWR_ENB, 0,
"Power path disabled after HV_OC handled");
syv682x_emul_set_status(emul, SYV682X_STATUS_OC_HV);
syv682x_interrupt(syv682x_port);
/* TODO(b/201420132): Simulate passage of time instead of sleeping. */
msleep(1);
zassert_ok(syv682x_emul_get_reg(emul, SYV682X_CONTROL_1_REG, ®),
"Reading CONTROL_1 failed");
zassert_equal(reg & SYV682X_CONTROL_1_PWR_ENB, 0,
"Power path disabled after HV_OC handled");
syv682x_emul_set_status(emul, SYV682X_STATUS_OC_HV);
syv682x_interrupt(syv682x_port);
/* TODO(b/201420132): Simulate passage of time instead of sleeping. */
msleep(1);
zassert_ok(syv682x_emul_get_reg(emul, SYV682X_CONTROL_1_REG, ®),
"Reading CONTROL_1 failed");
zassert_equal(reg & SYV682X_CONTROL_1_PWR_ENB,
SYV682X_CONTROL_1_PWR_ENB,
"Power path enabled after HV_OC handled 3 times");
syv682x_emul_set_status(emul, 0);
/*
* A VCONN OC event less than 100 ms should not cause the driver to turn
* VCONN off.
*/
ppc_set_vconn(syv682x_port, true);
syv682x_emul_set_control_4(emul, SYV682X_CONTROL_4_VCONN_OCP);
syv682x_interrupt(syv682x_port);
/* TODO(b/201420132): Simulate passage of time instead of sleeping. */
msleep(1);
zassert_ok(syv682x_emul_get_reg(emul, SYV682X_CONTROL_4_REG, ®),
"Reading CONTROL_4 failed");
zassert_true(reg &
(SYV682X_CONTROL_4_VCONN1 | SYV682X_CONTROL_4_VCONN2),
"VCONN disabled after initial VCONN OC");
/* TODO(b/201420132): Simulate passage of time instead of sleeping. */
msleep(50);
syv682x_interrupt(syv682x_port);
/* TODO(b/201420132): Simulate passage of time instead of sleeping. */
msleep(1);
zassert_ok(syv682x_emul_get_reg(emul, SYV682X_CONTROL_4_REG, ®),
"Reading CONTROL_4 failed");
zassert_true(reg &
(SYV682X_CONTROL_4_VCONN1 | SYV682X_CONTROL_4_VCONN2),
"VCONN disabled after short VCONN OC");
/*
* But if the event keeps going for over 100 ms continuously, the driver
* should turn VCONN off.
*/
/* TODO(b/201420132): Simulate passage of time instead of sleeping. */
msleep(60);
syv682x_interrupt(syv682x_port);
/* TODO(b/201420132): Simulate passage of time instead of sleeping. */
msleep(1);
zassert_ok(syv682x_emul_get_reg(emul, SYV682X_CONTROL_4_REG, ®),
"Reading CONTROL_4 failed");
zassert_false(reg &
(SYV682X_CONTROL_4_VCONN1 | SYV682X_CONTROL_4_VCONN2),
"VCONN enabled after long VCONN OC");
syv682x_emul_set_control_4(emul, 0);
/*
* A VCONN over-voltage (VBAT_OVP) event will cause the device to
* disconnect CC and VCONN. The driver should then reinitialize the
* device, which will enable both CC lines but leave VCONN disabled. The
* driver should then run generic CC over-voltage handling.
*/
ppc_set_vconn(syv682x_port, true);
syv682x_emul_set_control_4(emul, SYV682X_CONTROL_4_VBAT_OVP);
syv682x_interrupt(syv682x_port);
/* TODO(b/201420132): Simulate passage of time instead of sleeping. */
msleep(1);
zassert_ok(syv682x_emul_get_reg(emul, SYV682X_CONTROL_4_REG, ®),
"Reading CONTROL_4 failed");
zassert_true(reg & SYV682X_CONTROL_4_CC1_BPS,
"CC1 disabled after handling VBAT_OVP");
zassert_true(reg & SYV682X_CONTROL_4_CC2_BPS,
"CC2 disabled after handling VBAT_OVP");
zassert_false(reg &
(SYV682X_CONTROL_4_VCONN1 | SYV682X_CONTROL_4_VCONN2),
"VCONN enabled after handling VBAT_OVP");
/*
* TODO(b/190519131): The PD stack should generate a Reset in response
* to a CC over-voltage event. There is currently no easy way to test
* that a Hard Reset occurred.
*/
syv682x_emul_set_control_4(emul, 0);
}
static void test_ppc_syv682x_frs(void)
{
struct i2c_emul *emul = syv682x_emul_get(SYV682X_ORD);
const struct device *gpio_dev =
DEVICE_DT_GET(DT_GPIO_CTLR(GPIO_USB_C1_FRS_EN_PATH, gpios));
uint8_t reg;
/*
* Enabling FRS should enable only the appropriate CC line based on
* polarity. Disabling FRS should enable both CC lines.
*/
ppc_vbus_sink_enable(syv682x_port, true);
zassert_false(ppc_is_sourcing_vbus(syv682x_port),
"PPC is sourcing VBUS after sink enabled");
ppc_set_polarity(syv682x_port, 0 /* CC1 */);
ppc_set_frs_enable(syv682x_port, true);
zassert_equal(gpio_emul_output_get(gpio_dev, GPIO_USB_C1_FRS_EN_PORT),
1, "FRS enabled, but FRS GPIO not asserted");
zassert_ok(syv682x_emul_get_reg(emul, SYV682X_CONTROL_4_REG, ®),
"Reading CONTROL_4 failed");
zassert_equal(reg &
(SYV682X_CONTROL_4_CC1_BPS | SYV682X_CONTROL_4_CC2_BPS),
SYV682X_CONTROL_4_CC1_BPS,
"FRS enabled with CC1 polarity, but CONTROL_4 is 0x%x",
reg);
ppc_set_frs_enable(syv682x_port, false);
zassert_equal(gpio_emul_output_get(gpio_dev, GPIO_USB_C1_FRS_EN_PORT),
0, "FRS disabled, but FRS GPIO not deasserted");
zassert_ok(syv682x_emul_get_reg(emul, SYV682X_CONTROL_4_REG, ®),
"Reading CONTROL_4 failed");
zassert_equal(reg &
(SYV682X_CONTROL_4_CC1_BPS | SYV682X_CONTROL_4_CC2_BPS),
SYV682X_CONTROL_4_CC1_BPS | SYV682X_CONTROL_4_CC2_BPS,
"FRS enabled with CC1 polarity, but CONTROL_4 is 0x%x",
reg);
ppc_set_polarity(syv682x_port, 1 /* CC2 */);
ppc_set_frs_enable(syv682x_port, true);
zassert_ok(syv682x_emul_get_reg(emul, SYV682X_CONTROL_4_REG, ®),
"Reading CONTROL_4 failed");
zassert_equal(reg &
(SYV682X_CONTROL_4_CC1_BPS | SYV682X_CONTROL_4_CC2_BPS),
SYV682X_CONTROL_4_CC2_BPS,
"FRS enabled with CC2 polarity, but CONTROL_4 is 0x%x",
reg);
/*
* An FRS event when the PPC is Sink should cause the PPC to switch from
* Sink to Source.
*/
syv682x_emul_set_status(emul, SYV682X_STATUS_FRS);
syv682x_interrupt(syv682x_port);
/* TODO(b/201420132): Simulate passage of time instead of sleeping. */
msleep(1);
zassert_true(ppc_is_sourcing_vbus(syv682x_port),
"PPC is not sourcing VBUS after FRS signal handled");
syv682x_emul_set_status(emul, 0);
}
static void test_ppc_syv682x(void)
{
zassert_ok(ppc_init(syv682x_port), "PPC init failed");
test_ppc_syv682x_vbus_enable();
test_ppc_syv682x_interrupt();
test_ppc_syv682x_frs();
}
void test_suite_ppc(void)
{
ztest_test_suite(ppc,
ztest_user_unit_test(test_ppc_syv682x));
ztest_run_test_suite(ppc);
}
|
