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
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
|
/* Copyright 2020 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.
*/
/* Pompom board-specific configuration */
#include "adc_chip.h"
#include "button.h"
#include "charge_manager.h"
#include "charge_state.h"
#include "extpower.h"
#include "driver/accel_bma2x2.h"
#include "driver/accelgyro_bmi_common.h"
#include "driver/ppc/sn5s330.h"
#include "driver/tcpm/ps8xxx.h"
#include "driver/tcpm/tcpci.h"
#include "gpio.h"
#include "hooks.h"
#include "keyboard_scan.h"
#include "lid_switch.h"
#include "pi3usb9201.h"
#include "power.h"
#include "power_button.h"
#include "pwm.h"
#include "pwm_chip.h"
#include "system.h"
#include "shi_chip.h"
#include "switch.h"
#include "tablet_mode.h"
#include "task.h"
#include "usbc_ppc.h"
#define CPRINTS(format, args...) cprints(CC_USBCHARGE, format, ## args)
#define CPRINTF(format, args...) cprintf(CC_USBCHARGE, format, ## args)
/* Forward declaration */
static void tcpc_alert_event(enum gpio_signal signal);
static void usb0_evt(enum gpio_signal signal);
static void usb1_evt(enum gpio_signal signal);
static void ppc_interrupt(enum gpio_signal signal);
static void board_connect_c0_sbu(enum gpio_signal s);
#include "gpio_list.h"
/* GPIO Interrupt Handlers */
static void tcpc_alert_event(enum gpio_signal signal)
{
int port = -1;
switch (signal) {
case GPIO_USB_C0_PD_INT_ODL:
port = 0;
break;
case GPIO_USB_C1_PD_INT_ODL:
port = 1;
break;
default:
return;
}
schedule_deferred_pd_interrupt(port);
}
static void usb0_evt(enum gpio_signal signal)
{
task_set_event(TASK_ID_USB_CHG_P0, USB_CHG_EVENT_BC12, 0);
}
static void usb1_evt(enum gpio_signal signal)
{
task_set_event(TASK_ID_USB_CHG_P1, USB_CHG_EVENT_BC12, 0);
}
static void ppc_interrupt(enum gpio_signal signal)
{
switch (signal) {
case GPIO_USB_C0_SWCTL_INT_ODL:
sn5s330_interrupt(0);
break;
case GPIO_USB_C1_SWCTL_INT_ODL:
sn5s330_interrupt(1);
break;
default:
break;
}
}
static void board_connect_c0_sbu_deferred(void)
{
/*
* If CCD_MODE_ODL asserts, it means there's a debug accessory connected
* and we should enable the SBU FETs.
*/
ppc_set_sbu(0, 1);
}
DECLARE_DEFERRED(board_connect_c0_sbu_deferred);
static void board_connect_c0_sbu(enum gpio_signal s)
{
hook_call_deferred(&board_connect_c0_sbu_deferred_data, 0);
}
/* ADC channels */
const struct adc_t adc_channels[] = {
/* Measure VBUS through a 1/10 voltage divider */
[ADC_VBUS] = {
"VBUS",
NPCX_ADC_CH1,
ADC_MAX_VOLT * 10,
ADC_READ_MAX + 1,
0
},
/*
* Adapter current output or battery charging/discharging current (uV)
* 18x amplification on charger side.
*/
[ADC_AMON_BMON] = {
"AMON_BMON",
NPCX_ADC_CH2,
ADC_MAX_VOLT * 1000 / 18,
ADC_READ_MAX + 1,
0
},
/*
* ISL9238 PSYS output is 1.44 uA/W over 5.6K resistor, to read
* 0.8V @ 99 W, i.e. 124000 uW/mV. Using ADC_MAX_VOLT*124000 and
* ADC_READ_MAX+1 as multiplier/divider leads to overflows, so we
* only divide by 2 (enough to avoid precision issues).
*/
[ADC_PSYS] = {
"PSYS",
NPCX_ADC_CH3,
ADC_MAX_VOLT * 124000 * 2 / (ADC_READ_MAX + 1),
2,
0
},
};
BUILD_ASSERT(ARRAY_SIZE(adc_channels) == ADC_CH_COUNT);
const struct pwm_t pwm_channels[] = {
[PWM_CH_KBLIGHT] = { .channel = 3, .flags = 0, .freq = 10000 },
/* TODO(waihong): Assign a proper frequency. */
[PWM_CH_DISPLIGHT] = { .channel = 5, .flags = 0, .freq = 4800 },
};
BUILD_ASSERT(ARRAY_SIZE(pwm_channels) == PWM_CH_COUNT);
/* Power Path Controller */
struct ppc_config_t ppc_chips[] = {
{
.i2c_port = I2C_PORT_TCPC0,
.i2c_addr_flags = SN5S330_ADDR0_FLAGS,
.drv = &sn5s330_drv
},
{
.i2c_port = I2C_PORT_TCPC1,
.i2c_addr_flags = SN5S330_ADDR0_FLAGS,
.drv = &sn5s330_drv
},
};
unsigned int ppc_cnt = ARRAY_SIZE(ppc_chips);
/* TCPC mux configuration */
const struct tcpc_config_t tcpc_config[CONFIG_USB_PD_PORT_MAX_COUNT] = {
{
.bus_type = EC_BUS_TYPE_I2C,
.i2c_info = {
.port = I2C_PORT_TCPC0,
.addr_flags = PS8751_I2C_ADDR1_FLAGS,
},
.drv = &ps8xxx_tcpm_drv,
},
{
.bus_type = EC_BUS_TYPE_I2C,
.i2c_info = {
.port = I2C_PORT_TCPC1,
.addr_flags = PS8751_I2C_ADDR1_FLAGS,
},
.drv = &ps8xxx_tcpm_drv,
},
};
/*
* Port-0/1 USB mux driver.
*
* The USB mux is handled by TCPC chip and the HPD update is through a GPIO
* to AP. But the TCPC chip is also needed to know the HPD status; otherwise,
* the mux misbehaves.
*/
const struct usb_mux usb_muxes[CONFIG_USB_PD_PORT_MAX_COUNT] = {
{
.usb_port = 0,
.driver = &tcpci_tcpm_usb_mux_driver,
.hpd_update = &ps8xxx_tcpc_update_hpd_status,
},
{
.usb_port = 1,
.driver = &tcpci_tcpm_usb_mux_driver,
.hpd_update = &ps8xxx_tcpc_update_hpd_status,
}
};
const int usb_port_enable[USB_PORT_COUNT] = {
GPIO_EN_USB_A_5V,
};
/* BC1.2 */
const struct pi3usb9201_config_t pi3usb9201_bc12_chips[] = {
{
.i2c_port = I2C_PORT_POWER,
.i2c_addr_flags = PI3USB9201_I2C_ADDR_3_FLAGS,
},
{
.i2c_port = I2C_PORT_EEPROM,
.i2c_addr_flags = PI3USB9201_I2C_ADDR_3_FLAGS,
},
};
/* Initialize board. */
static void board_init(void)
{
/* Enable BC1.2 VBUS detection */
gpio_enable_interrupt(GPIO_USB_C0_VBUS_DET_L);
gpio_enable_interrupt(GPIO_USB_C1_VBUS_DET_L);
/* Enable BC1.2 interrupts */
gpio_enable_interrupt(GPIO_USB_C0_BC12_INT_L);
gpio_enable_interrupt(GPIO_USB_C1_BC12_INT_L);
/* Enable interrupt for BMI160 sensor */
gpio_enable_interrupt(GPIO_ACCEL_GYRO_INT_L);
/*
* The H1 SBU line for CCD are behind PPC chip. The PPC internal FETs
* for SBU may be disconnected after DP alt mode is off. Should enable
* the CCD_MODE_ODL interrupt to make sure the SBU FETs are connected.
*/
gpio_enable_interrupt(GPIO_CCD_MODE_ODL);
/* Set the backlight duty cycle to 0. AP will override it later. */
pwm_set_duty(PWM_CH_DISPLIGHT, 0);
}
DECLARE_HOOK(HOOK_INIT, board_init, HOOK_PRIO_DEFAULT);
void board_tcpc_init(void)
{
/* Only reset TCPC if not sysjump */
if (!system_jumped_late()) {
/* TODO(crosbug.com/p/61098): How long do we need to wait? */
board_reset_pd_mcu();
}
/* Enable PPC interrupts */
gpio_enable_interrupt(GPIO_USB_C0_SWCTL_INT_ODL);
/* Enable TCPC interrupts */
gpio_enable_interrupt(GPIO_USB_C0_PD_INT_ODL);
gpio_enable_interrupt(GPIO_USB_C1_PD_INT_ODL);
/*
* Initialize HPD to low; after sysjump SOC needs to see
* HPD pulse to enable video path
*/
for (int port = 0; port < CONFIG_USB_PD_PORT_MAX_COUNT; ++port)
usb_mux_hpd_update(port, 0, 0);
}
DECLARE_HOOK(HOOK_INIT, board_tcpc_init, HOOK_PRIO_INIT_I2C+1);
/* Called on AP S0 -> S3 transition */
static void board_chipset_suspend(void)
{
/*
* Turn off display backlight in S3. AP has its own control. The EC's
* and the AP's will be AND'ed together in hardware.
*/
gpio_set_level(GPIO_ENABLE_BACKLIGHT, 0);
pwm_enable(PWM_CH_DISPLIGHT, 0);
}
DECLARE_HOOK(HOOK_CHIPSET_SUSPEND, board_chipset_suspend, HOOK_PRIO_DEFAULT);
/* Called on AP S3 -> S0 transition */
static void board_chipset_resume(void)
{
/* Turn on display and keyboard backlight in S0. */
gpio_set_level(GPIO_ENABLE_BACKLIGHT, 1);
if (pwm_get_duty(PWM_CH_DISPLIGHT))
pwm_enable(PWM_CH_DISPLIGHT, 1);
}
DECLARE_HOOK(HOOK_CHIPSET_RESUME, board_chipset_resume, HOOK_PRIO_DEFAULT);
void board_reset_pd_mcu(void)
{
cprints(CC_USB, "Resetting TCPCs...");
cflush();
gpio_set_level(GPIO_USB_C0_PD_RST_L, 0);
gpio_set_level(GPIO_USB_C1_PD_RST_L, 0);
msleep(PS8XXX_RESET_DELAY_MS);
gpio_set_level(GPIO_USB_C0_PD_RST_L, 1);
gpio_set_level(GPIO_USB_C1_PD_RST_L, 1);
}
void board_set_tcpc_power_mode(int port, int mode)
{
/* Ignore the "mode" to turn the chip on. We can only do a reset. */
if (mode)
return;
board_reset_pd_mcu();
}
int board_vbus_sink_enable(int port, int enable)
{
/* Both ports are controlled by PPC SN5S330 */
return ppc_vbus_sink_enable(port, enable);
}
int board_is_sourcing_vbus(int port)
{
/* Both ports are controlled by PPC SN5S330 */
return ppc_is_sourcing_vbus(port);
}
void board_overcurrent_event(int port, int is_overcurrented)
{
/* TODO(b/120231371): Notify AP */
CPRINTS("p%d: overcurrent!", port);
}
int board_set_active_charge_port(int port)
{
int is_real_port = (port >= 0 &&
port < CONFIG_USB_PD_PORT_MAX_COUNT);
int i;
if (!is_real_port && port != CHARGE_PORT_NONE)
return EC_ERROR_INVAL;
if (port == CHARGE_PORT_NONE) {
CPRINTS("Disabling all charging port");
/* Disable all ports. */
for (i = 0; i < CONFIG_USB_PD_PORT_MAX_COUNT; i++) {
/*
* Do not return early if one fails otherwise we can
* get into a boot loop assertion failure.
*/
if (board_vbus_sink_enable(i, 0))
CPRINTS("Disabling p%d sink path failed.", i);
}
return EC_SUCCESS;
}
/* Check if the port is sourcing VBUS. */
if (board_is_sourcing_vbus(port)) {
CPRINTS("Skip enable p%d", port);
return EC_ERROR_INVAL;
}
CPRINTS("New charge port: p%d", port);
/*
* Turn off the other ports' sink path FETs, before enabling the
* requested charge port.
*/
for (i = 0; i < CONFIG_USB_PD_PORT_MAX_COUNT; i++) {
if (i == port)
continue;
if (board_vbus_sink_enable(i, 0))
CPRINTS("p%d: sink path disable failed.", i);
}
/* Enable requested charge port. */
if (board_vbus_sink_enable(port, 1)) {
CPRINTS("p%d: sink path enable failed.", port);
return EC_ERROR_UNKNOWN;
}
return EC_SUCCESS;
}
void board_set_charge_limit(int port, int supplier, int charge_ma,
int max_ma, int charge_mv)
{
/*
* Ignore lower charge ceiling on PD transition if our battery is
* critical, as we may brownout.
*/
if (supplier == CHARGE_SUPPLIER_PD &&
charge_ma < 1500 &&
charge_get_percent() < CONFIG_CHARGER_MIN_BAT_PCT_FOR_POWER_ON) {
CPRINTS("Using max ilim %d", max_ma);
charge_ma = max_ma;
}
charge_set_input_current_limit(MAX(charge_ma,
CONFIG_CHARGER_INPUT_CURRENT),
charge_mv);
}
uint16_t tcpc_get_alert_status(void)
{
uint16_t status = 0;
if (!gpio_get_level(GPIO_USB_C0_PD_INT_ODL))
if (gpio_get_level(GPIO_USB_C0_PD_RST_L))
status |= PD_STATUS_TCPC_ALERT_0;
if (!gpio_get_level(GPIO_USB_C1_PD_INT_ODL))
if (gpio_get_level(GPIO_USB_C1_PD_RST_L))
status |= PD_STATUS_TCPC_ALERT_1;
return status;
}
/* Mutexes */
static struct mutex g_base_mutex;
static struct mutex g_lid_mutex;
static struct bmi_drv_data_t g_bmi160_data;
static struct accelgyro_saved_data_t g_bma255_data;
/* Matrix to rotate accelerometer into standard reference frame */
const mat33_fp_t base_standard_ref = {
{ FLOAT_TO_FP(1), 0, 0},
{ 0, FLOAT_TO_FP(-1), 0},
{ 0, 0, FLOAT_TO_FP(-1)}
};
static const mat33_fp_t lid_standard_ref = {
{ FLOAT_TO_FP(-1), 0, 0},
{ 0, FLOAT_TO_FP(-1), 0},
{ 0, 0, FLOAT_TO_FP(1)}
};
struct motion_sensor_t motion_sensors[] = {
[LID_ACCEL] = {
.name = "Lid Accel",
.active_mask = SENSOR_ACTIVE_S0_S3,
.chip = MOTIONSENSE_CHIP_BMA255,
.type = MOTIONSENSE_TYPE_ACCEL,
.location = MOTIONSENSE_LOC_LID,
.drv = &bma2x2_accel_drv,
.mutex = &g_lid_mutex,
.drv_data = &g_bma255_data,
.port = I2C_PORT_SENSOR,
.i2c_spi_addr_flags = BMA2x2_I2C_ADDR1_FLAGS,
.rot_standard_ref = &lid_standard_ref,
.default_range = 2, /* g, to support lid angle calculation. */
.min_frequency = BMA255_ACCEL_MIN_FREQ,
.max_frequency = BMA255_ACCEL_MAX_FREQ,
.config = {
/* EC use accel for angle detection */
[SENSOR_CONFIG_EC_S0] = {
.odr = 10000 | ROUND_UP_FLAG,
},
/* Sensor on for lid angle detection */
[SENSOR_CONFIG_EC_S3] = {
.odr = 10000 | ROUND_UP_FLAG,
},
},
},
/*
* Note: bmi160: supports accelerometer and gyro sensor
* Requirement: accelerometer sensor must init before gyro sensor
* DO NOT change the order of the following table.
*/
[BASE_ACCEL] = {
.name = "Base Accel",
.active_mask = SENSOR_ACTIVE_S0_S3_S5,
.chip = MOTIONSENSE_CHIP_BMI160,
.type = MOTIONSENSE_TYPE_ACCEL,
.location = MOTIONSENSE_LOC_BASE,
.drv = &bmi160_drv,
.mutex = &g_base_mutex,
.drv_data = &g_bmi160_data,
.port = I2C_PORT_SENSOR,
.i2c_spi_addr_flags = BMI160_ADDR0_FLAGS,
.rot_standard_ref = &base_standard_ref,
.default_range = 4, /* g, to meet CDD 7.3.1/C-1-4 reqs */
.min_frequency = BMI_ACCEL_MIN_FREQ,
.max_frequency = BMI_ACCEL_MAX_FREQ,
.config = {
[SENSOR_CONFIG_EC_S0] = {
.odr = 10000 | ROUND_UP_FLAG,
},
},
},
[BASE_GYRO] = {
.name = "Gyro",
.active_mask = SENSOR_ACTIVE_S0_S3_S5,
.chip = MOTIONSENSE_CHIP_BMI160,
.type = MOTIONSENSE_TYPE_GYRO,
.location = MOTIONSENSE_LOC_BASE,
.drv = &bmi160_drv,
.mutex = &g_base_mutex,
.drv_data = &g_bmi160_data,
.port = I2C_PORT_SENSOR,
.i2c_spi_addr_flags = BMI160_ADDR0_FLAGS,
.default_range = 1000, /* dps */
.rot_standard_ref = &base_standard_ref,
.min_frequency = BMI_GYRO_MIN_FREQ,
.max_frequency = BMI_GYRO_MAX_FREQ,
},
};
const unsigned int motion_sensor_count = ARRAY_SIZE(motion_sensors);
#ifndef TEST_BUILD
/* This callback disables keyboard when convertibles are fully open */
void lid_angle_peripheral_enable(int enable)
{
int chipset_in_s0 = chipset_in_state(CHIPSET_STATE_ON);
if (enable) {
keyboard_scan_enable(1, KB_SCAN_DISABLE_LID_ANGLE);
} else {
/*
* Ensure that the chipset is off before disabling the keyboard.
* When the chipset is on, the EC keeps the keyboard enabled and
* the AP decides whether to ignore input devices or not.
*/
if (!chipset_in_s0)
keyboard_scan_enable(0, KB_SCAN_DISABLE_LID_ANGLE);
}
}
#endif
|