1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Driver for TI TPS6598x USB Power Delivery controller family
4 *
5 * Copyright (C) 2017, Intel Corporation
6 * Author: Heikki Krogerus <heikki.krogerus@linux.intel.com>
7 */
8
9 #include <linux/i2c.h>
10 #include <linux/acpi.h>
11 #include <linux/gpio/consumer.h>
12 #include <linux/module.h>
13 #include <linux/of.h>
14 #include <linux/power_supply.h>
15 #include <linux/regmap.h>
16 #include <linux/interrupt.h>
17 #include <linux/usb/typec.h>
18 #include <linux/usb/typec_altmode.h>
19 #include <linux/usb/typec_dp.h>
20 #include <linux/usb/typec_mux.h>
21 #include <linux/usb/typec_tbt.h>
22 #include <linux/usb/role.h>
23 #include <linux/workqueue.h>
24 #include <linux/firmware.h>
25
26 #include "tps6598x.h"
27 #include "trace.h"
28
29 /* Register offsets */
30 #define TPS_REG_VID 0x00
31 #define TPS_REG_MODE 0x03
32 #define TPS_REG_CMD1 0x08
33 #define TPS_REG_DATA1 0x09
34 #define TPS_REG_VERSION 0x0F
35 #define TPS_REG_INT_EVENT1 0x14
36 #define TPS_REG_INT_EVENT2 0x15
37 #define TPS_REG_INT_MASK1 0x16
38 #define TPS_REG_INT_MASK2 0x17
39 #define TPS_REG_INT_CLEAR1 0x18
40 #define TPS_REG_INT_CLEAR2 0x19
41 #define TPS_REG_STATUS 0x1a
42 #define TPS_REG_SYSTEM_POWER_STATE 0x20
43 #define TPS_REG_USB4_STATUS 0x24
44 #define TPS_REG_SYSTEM_CONF 0x28
45 #define TPS_REG_CTRL_CONF 0x29
46 #define TPS_REG_BOOT_STATUS 0x2D
47 #define TPS_REG_POWER_STATUS 0x3f
48 #define TPS_REG_PD_STATUS 0x40
49 #define TPS_REG_RX_IDENTITY_SOP 0x48
50 #define TPS_REG_CF_VID_STATUS 0x5e
51 #define TPS_REG_DP_SID_STATUS 0x58
52 #define TPS_REG_INTEL_VID_STATUS 0x59
53 #define TPS_REG_DATA_STATUS 0x5f
54 #define TPS_REG_SLEEP_CONF 0x70
55
56 /* TPS_REG_SYSTEM_CONF bits */
57 #define TPS_SYSCONF_PORTINFO(c) ((c) & 7)
58
59 /*
60 * BPMs task timeout, recommended 5 seconds
61 * pg.48 TPS2575 Host Interface Technical Reference
62 * Manual (Rev. A)
63 * https://www.ti.com/lit/ug/slvuc05a/slvuc05a.pdf
64 */
65 #define TPS_BUNDLE_TIMEOUT 0x32
66
67 /* BPMs return code */
68 #define TPS_TASK_BPMS_INVALID_BUNDLE_SIZE 0x4
69 #define TPS_TASK_BPMS_INVALID_SLAVE_ADDR 0x5
70 #define TPS_TASK_BPMS_INVALID_TIMEOUT 0x6
71
72 /* PBMc data out */
73 #define TPS_PBMC_RC 0 /* Return code */
74 #define TPS_PBMC_DPCS 2 /* device patch complete status */
75
76 /* reset de-assertion to ready for operation */
77 #define TPS_SETUP_MS 1000
78
79 enum {
80 TPS_PORTINFO_SINK,
81 TPS_PORTINFO_SINK_ACCESSORY,
82 TPS_PORTINFO_DRP_UFP,
83 TPS_PORTINFO_DRP_UFP_DRD,
84 TPS_PORTINFO_DRP_DFP,
85 TPS_PORTINFO_DRP_DFP_DRD,
86 TPS_PORTINFO_SOURCE,
87 };
88
89 /* TPS_REG_RX_IDENTITY_SOP */
90 struct tps6598x_rx_identity_reg {
91 u8 status;
92 struct usb_pd_identity identity;
93 } __packed;
94
95 /* TPS_REG_USB4_STATUS */
96 struct tps6598x_usb4_status_reg {
97 u8 mode_status;
98 __le32 eudo;
99 __le32 unknown;
100 } __packed;
101
102 /* TPS_REG_DP_SID_STATUS */
103 struct tps6598x_dp_sid_status_reg {
104 u8 mode_status;
105 __le32 status_tx;
106 __le32 status_rx;
107 __le32 configure;
108 __le32 mode_data;
109 } __packed;
110
111 /* TPS_REG_INTEL_VID_STATUS */
112 struct tps6598x_intel_vid_status_reg {
113 u8 mode_status;
114 __le32 attention_vdo;
115 __le16 enter_vdo;
116 __le16 device_mode;
117 __le16 cable_mode;
118 } __packed;
119
120 /* Standard Task return codes */
121 #define TPS_TASK_TIMEOUT 1
122 #define TPS_TASK_REJECTED 3
123
124 /* Debounce delay for mode changes, in milliseconds */
125 #define CD321X_DEBOUNCE_DELAY_MS 500
126
127 enum {
128 TPS_MODE_APP,
129 TPS_MODE_BOOT,
130 TPS_MODE_BIST,
131 TPS_MODE_DISC,
132 TPS_MODE_PTCH,
133 };
134
135 static const char *const modes[] = {
136 [TPS_MODE_APP] = "APP ",
137 [TPS_MODE_BOOT] = "BOOT",
138 [TPS_MODE_BIST] = "BIST",
139 [TPS_MODE_DISC] = "DISC",
140 [TPS_MODE_PTCH] = "PTCH",
141 };
142
143 /* Unrecognized commands will be replaced with "!CMD" */
144 #define INVALID_CMD(_cmd_) (_cmd_ == 0x444d4321)
145
146 struct tps6598x;
147
148 struct tipd_data {
149 irq_handler_t irq_handler;
150 u64 irq_mask1;
151 size_t tps_struct_size;
152 void (*remove)(struct tps6598x *tps);
153 int (*register_port)(struct tps6598x *tps, struct fwnode_handle *node);
154 void (*unregister_port)(struct tps6598x *tps);
155 void (*trace_data_status)(u32 status);
156 void (*trace_power_status)(u16 status);
157 void (*trace_status)(u32 status);
158 int (*apply_patch)(struct tps6598x *tps);
159 int (*init)(struct tps6598x *tps);
160 int (*switch_power_state)(struct tps6598x *tps, u8 target_state);
161 bool (*read_data_status)(struct tps6598x *tps);
162 int (*reset)(struct tps6598x *tps);
163 int (*connect)(struct tps6598x *tps, u32 status);
164 };
165
166 struct tps6598x {
167 struct device *dev;
168 struct regmap *regmap;
169 struct mutex lock; /* device lock */
170 u8 i2c_protocol:1;
171
172 struct gpio_desc *reset;
173 struct typec_port *port;
174 struct typec_partner *partner;
175 struct usb_pd_identity partner_identity;
176 struct usb_role_switch *role_sw;
177 struct typec_capability typec_cap;
178
179 struct power_supply *psy;
180 struct power_supply_desc psy_desc;
181 enum power_supply_usb_type usb_type;
182
183 int wakeup;
184 u32 status; /* status reg */
185 u32 data_status;
186 u16 pwr_status;
187 struct delayed_work wq_poll;
188
189 const struct tipd_data *data;
190 };
191
192 struct cd321x_status {
193 u32 status;
194 u32 pwr_status;
195 u32 data_status;
196 u32 status_changed;
197 struct usb_pd_identity partner_identity;
198 struct tps6598x_dp_sid_status_reg dp_sid_status;
199 struct tps6598x_intel_vid_status_reg intel_vid_status;
200 struct tps6598x_usb4_status_reg usb4_status;
201 };
202
203 struct cd321x {
204 struct tps6598x tps;
205
206 struct tps6598x_dp_sid_status_reg dp_sid_status;
207 struct tps6598x_intel_vid_status_reg intel_vid_status;
208 struct tps6598x_usb4_status_reg usb4_status;
209
210 struct typec_altmode *port_altmode_dp;
211 struct typec_altmode *port_altmode_tbt;
212
213 struct typec_mux *mux;
214 struct typec_mux_state state;
215
216 struct cd321x_status update_status;
217 struct delayed_work update_work;
218 struct usb_pd_identity cur_partner_identity;
219 };
220
221 static enum power_supply_property tps6598x_psy_props[] = {
222 POWER_SUPPLY_PROP_USB_TYPE,
223 POWER_SUPPLY_PROP_ONLINE,
224 };
225
226 static const char *tps6598x_psy_name_prefix = "tps6598x-source-psy-";
227
228 /*
229 * Max data bytes for Data1, Data2, and other registers. See ch 1.3.2:
230 * https://www.ti.com/lit/ug/slvuan1a/slvuan1a.pdf
231 */
232 #define TPS_MAX_LEN 64
233
234 static int
tps6598x_block_read(struct tps6598x * tps,u8 reg,void * val,size_t len)235 tps6598x_block_read(struct tps6598x *tps, u8 reg, void *val, size_t len)
236 {
237 u8 data[TPS_MAX_LEN + 1];
238 int ret;
239
240 if (len + 1 > sizeof(data))
241 return -EINVAL;
242
243 if (!tps->i2c_protocol)
244 return regmap_raw_read(tps->regmap, reg, val, len);
245
246 ret = regmap_raw_read(tps->regmap, reg, data, len + 1);
247 if (ret)
248 return ret;
249
250 if (data[0] < len)
251 return -EIO;
252
253 memcpy(val, &data[1], len);
254 return 0;
255 }
256
tps6598x_block_write(struct tps6598x * tps,u8 reg,const void * val,size_t len)257 static int tps6598x_block_write(struct tps6598x *tps, u8 reg,
258 const void *val, size_t len)
259 {
260 u8 data[TPS_MAX_LEN + 1];
261
262 if (len + 1 > sizeof(data))
263 return -EINVAL;
264
265 if (!tps->i2c_protocol)
266 return regmap_raw_write(tps->regmap, reg, val, len);
267
268 data[0] = len;
269 memcpy(&data[1], val, len);
270
271 return regmap_raw_write(tps->regmap, reg, data, len + 1);
272 }
273
tps6598x_read8(struct tps6598x * tps,u8 reg,u8 * val)274 static inline int tps6598x_read8(struct tps6598x *tps, u8 reg, u8 *val)
275 {
276 return tps6598x_block_read(tps, reg, val, sizeof(u8));
277 }
278
tps6598x_read16(struct tps6598x * tps,u8 reg,u16 * val)279 static inline int tps6598x_read16(struct tps6598x *tps, u8 reg, u16 *val)
280 {
281 return tps6598x_block_read(tps, reg, val, sizeof(u16));
282 }
283
tps6598x_read32(struct tps6598x * tps,u8 reg,u32 * val)284 static inline int tps6598x_read32(struct tps6598x *tps, u8 reg, u32 *val)
285 {
286 return tps6598x_block_read(tps, reg, val, sizeof(u32));
287 }
288
tps6598x_read64(struct tps6598x * tps,u8 reg,u64 * val)289 static inline int tps6598x_read64(struct tps6598x *tps, u8 reg, u64 *val)
290 {
291 return tps6598x_block_read(tps, reg, val, sizeof(u64));
292 }
293
tps6598x_write8(struct tps6598x * tps,u8 reg,u8 val)294 static inline int tps6598x_write8(struct tps6598x *tps, u8 reg, u8 val)
295 {
296 return tps6598x_block_write(tps, reg, &val, sizeof(u8));
297 }
298
tps6598x_write64(struct tps6598x * tps,u8 reg,u64 val)299 static inline int tps6598x_write64(struct tps6598x *tps, u8 reg, u64 val)
300 {
301 return tps6598x_block_write(tps, reg, &val, sizeof(u64));
302 }
303
304 static inline int
tps6598x_write_4cc(struct tps6598x * tps,u8 reg,const char * val)305 tps6598x_write_4cc(struct tps6598x *tps, u8 reg, const char *val)
306 {
307 return tps6598x_block_write(tps, reg, val, 4);
308 }
309
tps6598x_read_partner_identity(struct tps6598x * tps)310 static int tps6598x_read_partner_identity(struct tps6598x *tps)
311 {
312 struct tps6598x_rx_identity_reg id;
313 int ret;
314
315 ret = tps6598x_block_read(tps, TPS_REG_RX_IDENTITY_SOP,
316 &id, sizeof(id));
317 if (ret)
318 return ret;
319
320 tps->partner_identity = id.identity;
321
322 return 0;
323 }
324
tps6598x_set_data_role(struct tps6598x * tps,enum typec_data_role role,bool connected)325 static void tps6598x_set_data_role(struct tps6598x *tps,
326 enum typec_data_role role, bool connected)
327 {
328 enum usb_role role_val;
329
330 if (role == TYPEC_HOST)
331 role_val = USB_ROLE_HOST;
332 else
333 role_val = USB_ROLE_DEVICE;
334
335 if (!connected)
336 role_val = USB_ROLE_NONE;
337
338 usb_role_switch_set_role(tps->role_sw, role_val);
339 typec_set_data_role(tps->port, role);
340 }
341
tps6598x_connect(struct tps6598x * tps,u32 status)342 static int tps6598x_connect(struct tps6598x *tps, u32 status)
343 {
344 struct typec_partner_desc desc;
345 enum typec_pwr_opmode mode;
346 int ret;
347
348 if (tps->partner)
349 return 0;
350
351 mode = TPS_POWER_STATUS_PWROPMODE(tps->pwr_status);
352
353 desc.usb_pd = mode == TYPEC_PWR_MODE_PD;
354 desc.accessory = TYPEC_ACCESSORY_NONE; /* XXX: handle accessories */
355 desc.identity = NULL;
356
357 if (desc.usb_pd) {
358 ret = tps6598x_read_partner_identity(tps);
359 if (ret)
360 return ret;
361 desc.identity = &tps->partner_identity;
362 }
363
364 typec_set_pwr_opmode(tps->port, mode);
365 typec_set_pwr_role(tps->port, TPS_STATUS_TO_TYPEC_PORTROLE(status));
366 typec_set_vconn_role(tps->port, TPS_STATUS_TO_TYPEC_VCONN(status));
367 if (TPS_STATUS_TO_UPSIDE_DOWN(status))
368 typec_set_orientation(tps->port, TYPEC_ORIENTATION_REVERSE);
369 else
370 typec_set_orientation(tps->port, TYPEC_ORIENTATION_NORMAL);
371 typec_set_mode(tps->port, TYPEC_STATE_USB);
372 tps6598x_set_data_role(tps, TPS_STATUS_TO_TYPEC_DATAROLE(status), true);
373
374 tps->partner = typec_register_partner(tps->port, &desc);
375 if (IS_ERR(tps->partner))
376 return PTR_ERR(tps->partner);
377
378 if (desc.identity)
379 typec_partner_set_identity(tps->partner);
380
381 power_supply_changed(tps->psy);
382
383 return 0;
384 }
385
tps6598x_disconnect(struct tps6598x * tps,u32 status)386 static void tps6598x_disconnect(struct tps6598x *tps, u32 status)
387 {
388 if (!IS_ERR(tps->partner))
389 typec_unregister_partner(tps->partner);
390 tps->partner = NULL;
391 typec_set_pwr_opmode(tps->port, TYPEC_PWR_MODE_USB);
392 typec_set_pwr_role(tps->port, TPS_STATUS_TO_TYPEC_PORTROLE(status));
393 typec_set_vconn_role(tps->port, TPS_STATUS_TO_TYPEC_VCONN(status));
394 typec_set_orientation(tps->port, TYPEC_ORIENTATION_NONE);
395 typec_set_mode(tps->port, TYPEC_STATE_SAFE);
396 tps6598x_set_data_role(tps, TPS_STATUS_TO_TYPEC_DATAROLE(status), false);
397
398 power_supply_changed(tps->psy);
399 }
400
tps6598x_exec_cmd_tmo(struct tps6598x * tps,const char * cmd,size_t in_len,const u8 * in_data,size_t out_len,u8 * out_data,u32 cmd_timeout_ms,u32 res_delay_ms)401 static int tps6598x_exec_cmd_tmo(struct tps6598x *tps, const char *cmd,
402 size_t in_len, const u8 *in_data,
403 size_t out_len, u8 *out_data,
404 u32 cmd_timeout_ms, u32 res_delay_ms)
405 {
406 unsigned long timeout;
407 u32 val;
408 int ret;
409
410 ret = tps6598x_read32(tps, TPS_REG_CMD1, &val);
411 if (ret)
412 return ret;
413 if (val && !INVALID_CMD(val))
414 return -EBUSY;
415
416 if (in_len) {
417 ret = tps6598x_block_write(tps, TPS_REG_DATA1,
418 in_data, in_len);
419 if (ret)
420 return ret;
421 }
422
423 ret = tps6598x_write_4cc(tps, TPS_REG_CMD1, cmd);
424 if (ret < 0)
425 return ret;
426
427 timeout = jiffies + msecs_to_jiffies(cmd_timeout_ms);
428
429 do {
430 ret = tps6598x_read32(tps, TPS_REG_CMD1, &val);
431 if (ret)
432 return ret;
433 if (INVALID_CMD(val))
434 return -EINVAL;
435
436 if (time_is_before_jiffies(timeout))
437 return -ETIMEDOUT;
438 } while (val);
439
440 /* some commands require delay for the result to be available */
441 mdelay(res_delay_ms);
442
443 if (out_len) {
444 ret = tps6598x_block_read(tps, TPS_REG_DATA1,
445 out_data, out_len);
446 if (ret)
447 return ret;
448 val = out_data[0];
449 } else {
450 ret = tps6598x_block_read(tps, TPS_REG_DATA1, &val, sizeof(u8));
451 if (ret)
452 return ret;
453 }
454
455 switch (val) {
456 case TPS_TASK_TIMEOUT:
457 return -ETIMEDOUT;
458 case TPS_TASK_REJECTED:
459 return -EPERM;
460 default:
461 break;
462 }
463
464 return 0;
465 }
466
tps6598x_exec_cmd(struct tps6598x * tps,const char * cmd,size_t in_len,const u8 * in_data,size_t out_len,u8 * out_data)467 static int tps6598x_exec_cmd(struct tps6598x *tps, const char *cmd,
468 size_t in_len, const u8 *in_data,
469 size_t out_len, u8 *out_data)
470 {
471 return tps6598x_exec_cmd_tmo(tps, cmd, in_len, in_data,
472 out_len, out_data, 1000, 0);
473 }
474
tps6598x_dr_set(struct typec_port * port,enum typec_data_role role)475 static int tps6598x_dr_set(struct typec_port *port, enum typec_data_role role)
476 {
477 const char *cmd = (role == TYPEC_DEVICE) ? "SWUF" : "SWDF";
478 struct tps6598x *tps = typec_get_drvdata(port);
479 u32 status;
480 int ret;
481
482 mutex_lock(&tps->lock);
483
484 ret = tps6598x_exec_cmd(tps, cmd, 0, NULL, 0, NULL);
485 if (ret)
486 goto out_unlock;
487
488 ret = tps6598x_read32(tps, TPS_REG_STATUS, &status);
489 if (ret)
490 goto out_unlock;
491
492 if (role != TPS_STATUS_TO_TYPEC_DATAROLE(status)) {
493 ret = -EPROTO;
494 goto out_unlock;
495 }
496
497 tps6598x_set_data_role(tps, role, true);
498
499 out_unlock:
500 mutex_unlock(&tps->lock);
501
502 return ret;
503 }
504
tps6598x_pr_set(struct typec_port * port,enum typec_role role)505 static int tps6598x_pr_set(struct typec_port *port, enum typec_role role)
506 {
507 const char *cmd = (role == TYPEC_SINK) ? "SWSk" : "SWSr";
508 struct tps6598x *tps = typec_get_drvdata(port);
509 u32 status;
510 int ret;
511
512 mutex_lock(&tps->lock);
513
514 ret = tps6598x_exec_cmd(tps, cmd, 0, NULL, 0, NULL);
515 if (ret)
516 goto out_unlock;
517
518 ret = tps6598x_read32(tps, TPS_REG_STATUS, &status);
519 if (ret)
520 goto out_unlock;
521
522 if (role != TPS_STATUS_TO_TYPEC_PORTROLE(status)) {
523 ret = -EPROTO;
524 goto out_unlock;
525 }
526
527 typec_set_pwr_role(tps->port, role);
528
529 out_unlock:
530 mutex_unlock(&tps->lock);
531
532 return ret;
533 }
534
535 static const struct typec_operations tps6598x_ops = {
536 .dr_set = tps6598x_dr_set,
537 .pr_set = tps6598x_pr_set,
538 };
539
tps6598x_read_status(struct tps6598x * tps,u32 * status)540 static bool tps6598x_read_status(struct tps6598x *tps, u32 *status)
541 {
542 int ret;
543
544 ret = tps6598x_read32(tps, TPS_REG_STATUS, status);
545 if (ret) {
546 dev_err(tps->dev, "%s: failed to read status\n", __func__);
547 return false;
548 }
549
550 if (tps->data->trace_status)
551 tps->data->trace_status(*status);
552
553 return true;
554 }
555
tps6598x_read_data_status(struct tps6598x * tps)556 static bool tps6598x_read_data_status(struct tps6598x *tps)
557 {
558 u32 data_status;
559 int ret;
560
561 ret = tps6598x_read32(tps, TPS_REG_DATA_STATUS, &data_status);
562 if (ret < 0) {
563 dev_err(tps->dev, "failed to read data status: %d\n", ret);
564 return false;
565 }
566 tps->data_status = data_status;
567
568 if (tps->data->trace_data_status)
569 tps->data->trace_data_status(data_status);
570
571 return true;
572 }
573
cd321x_read_data_status(struct tps6598x * tps)574 static bool cd321x_read_data_status(struct tps6598x *tps)
575 {
576 struct cd321x *cd321x = container_of(tps, struct cd321x, tps);
577 int ret;
578
579 ret = tps6598x_read_data_status(tps);
580 if (!ret)
581 return false;
582
583 if (tps->data_status & TPS_DATA_STATUS_DP_CONNECTION) {
584 ret = tps6598x_block_read(tps, TPS_REG_DP_SID_STATUS,
585 &cd321x->dp_sid_status, sizeof(cd321x->dp_sid_status));
586 if (ret) {
587 dev_err(tps->dev, "Failed to read DP SID Status: %d\n",
588 ret);
589 return false;
590 }
591 }
592
593 if (tps->data_status & TPS_DATA_STATUS_TBT_CONNECTION) {
594 ret = tps6598x_block_read(tps, TPS_REG_INTEL_VID_STATUS,
595 &cd321x->intel_vid_status, sizeof(cd321x->intel_vid_status));
596 if (ret) {
597 dev_err(tps->dev, "Failed to read Intel VID Status: %d\n", ret);
598 return false;
599 }
600 }
601
602 if (tps->data_status & CD321X_DATA_STATUS_USB4_CONNECTION) {
603 ret = tps6598x_block_read(tps, TPS_REG_USB4_STATUS,
604 &cd321x->usb4_status, sizeof(cd321x->usb4_status));
605 if (ret) {
606 dev_err(tps->dev,
607 "Failed to read USB4 Status: %d\n", ret);
608 return false;
609 }
610 }
611
612 return true;
613 }
614
tps6598x_read_power_status(struct tps6598x * tps)615 static bool tps6598x_read_power_status(struct tps6598x *tps)
616 {
617 u16 pwr_status;
618 int ret;
619
620 ret = tps6598x_read16(tps, TPS_REG_POWER_STATUS, &pwr_status);
621 if (ret < 0) {
622 dev_err(tps->dev, "failed to read power status: %d\n", ret);
623 return false;
624 }
625 tps->pwr_status = pwr_status;
626
627 if (tps->data->trace_power_status)
628 tps->data->trace_power_status(pwr_status);
629
630 return true;
631 }
632
tps6598x_handle_plug_event(struct tps6598x * tps,u32 status)633 static void tps6598x_handle_plug_event(struct tps6598x *tps, u32 status)
634 {
635 int ret;
636
637 if (status & TPS_STATUS_PLUG_PRESENT) {
638 ret = tps6598x_connect(tps, status);
639 if (ret)
640 dev_err(tps->dev, "failed to register partner\n");
641 } else {
642 tps6598x_disconnect(tps, status);
643 }
644 }
645
cd321x_typec_update_mode(struct tps6598x * tps,struct cd321x_status * st)646 static void cd321x_typec_update_mode(struct tps6598x *tps, struct cd321x_status *st)
647 {
648 struct cd321x *cd321x = container_of(tps, struct cd321x, tps);
649
650 if (!(st->data_status & TPS_DATA_STATUS_DATA_CONNECTION)) {
651 if (cd321x->state.mode == TYPEC_STATE_SAFE)
652 return;
653 cd321x->state.alt = NULL;
654 cd321x->state.mode = TYPEC_STATE_SAFE;
655 cd321x->state.data = NULL;
656 typec_mux_set(cd321x->mux, &cd321x->state);
657 } else if (st->data_status & TPS_DATA_STATUS_DP_CONNECTION) {
658 struct typec_displayport_data dp_data;
659 unsigned long mode;
660
661 switch (TPS_DATA_STATUS_DP_SPEC_PIN_ASSIGNMENT(st->data_status)) {
662 case TPS_DATA_STATUS_DP_SPEC_PIN_ASSIGNMENT_A:
663 mode = TYPEC_DP_STATE_A;
664 break;
665 case TPS_DATA_STATUS_DP_SPEC_PIN_ASSIGNMENT_B:
666 mode = TYPEC_DP_STATE_B;
667 break;
668 case TPS_DATA_STATUS_DP_SPEC_PIN_ASSIGNMENT_C:
669 mode = TYPEC_DP_STATE_C;
670 break;
671 case TPS_DATA_STATUS_DP_SPEC_PIN_ASSIGNMENT_D:
672 mode = TYPEC_DP_STATE_D;
673 break;
674 case TPS_DATA_STATUS_DP_SPEC_PIN_ASSIGNMENT_E:
675 mode = TYPEC_DP_STATE_E;
676 break;
677 case TPS_DATA_STATUS_DP_SPEC_PIN_ASSIGNMENT_F:
678 mode = TYPEC_DP_STATE_F;
679 break;
680 default:
681 dev_err(tps->dev, "Invalid DP pin assignment\n");
682 return;
683 }
684
685 if (cd321x->state.alt == cd321x->port_altmode_dp &&
686 cd321x->state.mode == mode) {
687 return;
688 }
689
690 dp_data.status = le32_to_cpu(st->dp_sid_status.status_rx);
691 dp_data.conf = le32_to_cpu(st->dp_sid_status.configure);
692 cd321x->state.alt = cd321x->port_altmode_dp;
693 cd321x->state.data = &dp_data;
694 cd321x->state.mode = mode;
695 typec_mux_set(cd321x->mux, &cd321x->state);
696 } else if (st->data_status & TPS_DATA_STATUS_TBT_CONNECTION) {
697 struct typec_thunderbolt_data tbt_data;
698
699 if (cd321x->state.alt == cd321x->port_altmode_tbt &&
700 cd321x->state.mode == TYPEC_TBT_MODE)
701 return;
702
703 tbt_data.cable_mode = le16_to_cpu(st->intel_vid_status.cable_mode);
704 tbt_data.device_mode = le16_to_cpu(st->intel_vid_status.device_mode);
705 tbt_data.enter_vdo = le16_to_cpu(st->intel_vid_status.enter_vdo);
706 cd321x->state.alt = cd321x->port_altmode_tbt;
707 cd321x->state.mode = TYPEC_TBT_MODE;
708 cd321x->state.data = &tbt_data;
709 typec_mux_set(cd321x->mux, &cd321x->state);
710 } else if (st->data_status & CD321X_DATA_STATUS_USB4_CONNECTION) {
711 struct enter_usb_data eusb_data;
712
713 if (cd321x->state.alt == NULL && cd321x->state.mode == TYPEC_MODE_USB4)
714 return;
715
716 eusb_data.eudo = le32_to_cpu(st->usb4_status.eudo);
717 eusb_data.active_link_training =
718 !!(st->data_status & TPS_DATA_STATUS_ACTIVE_LINK_TRAIN);
719
720 cd321x->state.alt = NULL;
721 cd321x->state.data = &eusb_data;
722 cd321x->state.mode = TYPEC_MODE_USB4;
723 typec_mux_set(cd321x->mux, &cd321x->state);
724 } else {
725 if (cd321x->state.alt == NULL && cd321x->state.mode == TYPEC_STATE_USB)
726 return;
727 cd321x->state.alt = NULL;
728 cd321x->state.mode = TYPEC_STATE_USB;
729 cd321x->state.data = NULL;
730 typec_mux_set(cd321x->mux, &cd321x->state);
731 }
732
733 /* Clear data since it's no longer used after typec_mux_set and points to the stack */
734 cd321x->state.data = NULL;
735 }
736
cd321x_update_work(struct work_struct * work)737 static void cd321x_update_work(struct work_struct *work)
738 {
739 struct cd321x *cd321x = container_of(to_delayed_work(work),
740 struct cd321x, update_work);
741 struct tps6598x *tps = &cd321x->tps;
742 struct cd321x_status st;
743
744 guard(mutex)(&tps->lock);
745
746 st = cd321x->update_status;
747 cd321x->update_status.status_changed = 0;
748
749 bool old_connected = !!tps->partner;
750 bool new_connected = st.status & TPS_STATUS_PLUG_PRESENT;
751 bool was_disconnected = st.status_changed & TPS_STATUS_PLUG_PRESENT;
752
753 bool usb_connection = st.data_status &
754 (TPS_DATA_STATUS_USB2_CONNECTION | TPS_DATA_STATUS_USB3_CONNECTION);
755
756 enum usb_role old_role = usb_role_switch_get_role(tps->role_sw);
757 enum usb_role new_role = USB_ROLE_NONE;
758 enum typec_pwr_opmode pwr_opmode = TYPEC_PWR_MODE_USB;
759 enum typec_orientation orientation = TYPEC_ORIENTATION_NONE;
760
761 if (usb_connection) {
762 if (tps->data_status & TPS_DATA_STATUS_USB_DATA_ROLE)
763 new_role = USB_ROLE_DEVICE;
764 else
765 new_role = USB_ROLE_HOST;
766 }
767
768 if (new_connected) {
769 pwr_opmode = TPS_POWER_STATUS_PWROPMODE(st.pwr_status);
770 orientation = TPS_STATUS_TO_UPSIDE_DOWN(st.status) ?
771 TYPEC_ORIENTATION_REVERSE : TYPEC_ORIENTATION_NORMAL;
772 }
773
774 bool is_pd = pwr_opmode == TYPEC_PWR_MODE_PD;
775 bool partner_changed = old_connected && new_connected &&
776 (was_disconnected ||
777 (is_pd && memcmp(&st.partner_identity,
778 &cd321x->cur_partner_identity, sizeof(struct usb_pd_identity))));
779
780 /* If we are switching from an active role, transition to USB_ROLE_NONE first */
781 if (old_role != USB_ROLE_NONE && (new_role != old_role || was_disconnected))
782 usb_role_switch_set_role(tps->role_sw, USB_ROLE_NONE);
783
784 /* Process partner disconnection or change */
785 if (!new_connected || partner_changed) {
786 if (!IS_ERR(tps->partner))
787 typec_unregister_partner(tps->partner);
788 tps->partner = NULL;
789 }
790
791 /* If there was a disconnection, set PHY to off */
792 if (!new_connected || was_disconnected) {
793 cd321x->state.alt = NULL;
794 cd321x->state.mode = TYPEC_STATE_SAFE;
795 cd321x->state.data = NULL;
796 typec_set_mode(tps->port, TYPEC_STATE_SAFE);
797 }
798
799 /* Update Type-C properties */
800 typec_set_pwr_opmode(tps->port, pwr_opmode);
801 typec_set_pwr_role(tps->port, TPS_STATUS_TO_TYPEC_PORTROLE(st.status));
802 typec_set_vconn_role(tps->port, TPS_STATUS_TO_TYPEC_VCONN(st.status));
803 typec_set_orientation(tps->port, orientation);
804 typec_set_data_role(tps->port, TPS_STATUS_TO_TYPEC_DATAROLE(st.status));
805 power_supply_changed(tps->psy);
806
807 /* If the plug is disconnected, we are done */
808 if (!new_connected)
809 return;
810
811 /* Set up partner if we were previously disconnected (or changed). */
812 if (!tps->partner) {
813 struct typec_partner_desc desc;
814
815 desc.usb_pd = is_pd;
816 desc.accessory = TYPEC_ACCESSORY_NONE; /* XXX: handle accessories */
817 desc.identity = NULL;
818
819 if (desc.usb_pd)
820 desc.identity = &st.partner_identity;
821
822 tps->partner = typec_register_partner(tps->port, &desc);
823 if (IS_ERR(tps->partner))
824 dev_warn(tps->dev, "%s: failed to register partnet\n", __func__);
825
826 if (desc.identity) {
827 typec_partner_set_identity(tps->partner);
828 cd321x->cur_partner_identity = st.partner_identity;
829 }
830 }
831
832 /* Update the TypeC MUX/PHY state */
833 cd321x_typec_update_mode(tps, &st);
834
835 /* Launch the USB role switch */
836 usb_role_switch_set_role(tps->role_sw, new_role);
837
838 power_supply_changed(tps->psy);
839 }
840
cd321x_queue_status(struct cd321x * cd321x)841 static void cd321x_queue_status(struct cd321x *cd321x)
842 {
843 cd321x->update_status.status_changed |= cd321x->update_status.status ^ cd321x->tps.status;
844
845 cd321x->update_status.status = cd321x->tps.status;
846 cd321x->update_status.pwr_status = cd321x->tps.pwr_status;
847 cd321x->update_status.data_status = cd321x->tps.data_status;
848
849 cd321x->update_status.partner_identity = cd321x->tps.partner_identity;
850 cd321x->update_status.dp_sid_status = cd321x->dp_sid_status;
851 cd321x->update_status.intel_vid_status = cd321x->intel_vid_status;
852 cd321x->update_status.usb4_status = cd321x->usb4_status;
853 }
854
cd321x_connect(struct tps6598x * tps,u32 status)855 static int cd321x_connect(struct tps6598x *tps, u32 status)
856 {
857 struct cd321x *cd321x = container_of(tps, struct cd321x, tps);
858
859 tps->status = status;
860 cd321x_queue_status(cd321x);
861
862 /*
863 * Cancel pending work if not already running, then requeue after CD321X_DEBOUNCE_DELAY_MS
864 * regardless since the work function will check for any plug or altmodes changes since
865 * its last run anyway.
866 */
867 cancel_delayed_work(&cd321x->update_work);
868 schedule_delayed_work(&cd321x->update_work, msecs_to_jiffies(CD321X_DEBOUNCE_DELAY_MS));
869
870 return 0;
871 }
872
cd321x_interrupt(int irq,void * data)873 static irqreturn_t cd321x_interrupt(int irq, void *data)
874 {
875 struct tps6598x *tps = data;
876 u64 event = 0;
877 u32 status;
878 int ret;
879
880 mutex_lock(&tps->lock);
881
882 ret = tps6598x_read64(tps, TPS_REG_INT_EVENT1, &event);
883 if (ret) {
884 dev_err(tps->dev, "%s: failed to read events\n", __func__);
885 goto err_unlock;
886 }
887 trace_cd321x_irq(event);
888
889 if (!event)
890 goto err_unlock;
891
892 tps6598x_write64(tps, TPS_REG_INT_CLEAR1, event);
893
894 if (!tps6598x_read_status(tps, &status))
895 goto err_unlock;
896
897 if (event & APPLE_CD_REG_INT_POWER_STATUS_UPDATE) {
898 if (!tps6598x_read_power_status(tps))
899 goto err_unlock;
900 if (TPS_POWER_STATUS_PWROPMODE(tps->pwr_status) == TYPEC_PWR_MODE_PD) {
901 if (tps6598x_read_partner_identity(tps)) {
902 dev_err(tps->dev, "failed to read partner identity\n");
903 tps->partner_identity = (struct usb_pd_identity) {0};
904 }
905 }
906 }
907
908 if (event & APPLE_CD_REG_INT_DATA_STATUS_UPDATE)
909 if (!tps->data->read_data_status(tps))
910 goto err_unlock;
911
912 /* Can be called uncondtionally since it will check for any changes itself */
913 cd321x_connect(tps, status);
914
915 err_unlock:
916 mutex_unlock(&tps->lock);
917
918 if (event)
919 return IRQ_HANDLED;
920 return IRQ_NONE;
921 }
922
tps6598x_has_role_changed(struct tps6598x * tps,u32 status)923 static bool tps6598x_has_role_changed(struct tps6598x *tps, u32 status)
924 {
925 status ^= tps->status;
926
927 return status & (TPS_STATUS_PORTROLE | TPS_STATUS_DATAROLE);
928 }
929
tps25750_interrupt(int irq,void * data)930 static irqreturn_t tps25750_interrupt(int irq, void *data)
931 {
932 struct tps6598x *tps = data;
933 u64 event[2] = { };
934 u32 status;
935 int ret;
936
937 mutex_lock(&tps->lock);
938
939 ret = tps6598x_block_read(tps, TPS_REG_INT_EVENT1, event, 11);
940 if (ret) {
941 dev_err(tps->dev, "%s: failed to read events\n", __func__);
942 goto err_unlock;
943 }
944 trace_tps25750_irq(event[0]);
945
946 if (!(event[0] | event[1]))
947 goto err_unlock;
948
949 if (!tps6598x_read_status(tps, &status))
950 goto err_clear_ints;
951
952 if (event[0] & TPS_REG_INT_POWER_STATUS_UPDATE)
953 if (!tps6598x_read_power_status(tps))
954 goto err_clear_ints;
955
956 if (event[0] & TPS_REG_INT_DATA_STATUS_UPDATE)
957 if (!tps->data->read_data_status(tps))
958 goto err_clear_ints;
959
960 /*
961 * data/port roles could be updated independently after
962 * a plug event. Therefore, we need to check
963 * for pr/dr status change to set TypeC dr/pr accordingly.
964 */
965 if (event[0] & TPS_REG_INT_PLUG_EVENT ||
966 tps6598x_has_role_changed(tps, status))
967 tps6598x_handle_plug_event(tps, status);
968
969 tps->status = status;
970
971 err_clear_ints:
972 tps6598x_block_write(tps, TPS_REG_INT_CLEAR1, event, 11);
973
974 err_unlock:
975 mutex_unlock(&tps->lock);
976
977 if (event[0] | event[1])
978 return IRQ_HANDLED;
979 return IRQ_NONE;
980 }
981
tps6598x_interrupt(int irq,void * data)982 static irqreturn_t tps6598x_interrupt(int irq, void *data)
983 {
984 int intev_len = TPS_65981_2_6_INTEVENT_LEN;
985 struct tps6598x *tps = data;
986 u64 event1[2] = { };
987 u64 event2[2] = { };
988 u32 version;
989 u32 status;
990 int ret;
991
992 mutex_lock(&tps->lock);
993
994 ret = tps6598x_read32(tps, TPS_REG_VERSION, &version);
995 if (ret)
996 dev_warn(tps->dev, "%s: failed to read version (%d)\n",
997 __func__, ret);
998
999 if (TPS_VERSION_HW_VERSION(version) == TPS_VERSION_HW_65987_8_DH ||
1000 TPS_VERSION_HW_VERSION(version) == TPS_VERSION_HW_65987_8_DK)
1001 intev_len = TPS_65987_8_INTEVENT_LEN;
1002
1003 ret = tps6598x_block_read(tps, TPS_REG_INT_EVENT1, event1, intev_len);
1004
1005 ret = tps6598x_block_read(tps, TPS_REG_INT_EVENT1, event1, intev_len);
1006 if (ret) {
1007 dev_err(tps->dev, "%s: failed to read event1\n", __func__);
1008 goto err_unlock;
1009 }
1010 ret = tps6598x_block_read(tps, TPS_REG_INT_EVENT2, event2, intev_len);
1011 if (ret) {
1012 dev_err(tps->dev, "%s: failed to read event2\n", __func__);
1013 goto err_unlock;
1014 }
1015 trace_tps6598x_irq(event1[0], event2[0]);
1016
1017 if (!(event1[0] | event1[1] | event2[0] | event2[1]))
1018 goto err_unlock;
1019
1020 tps6598x_block_write(tps, TPS_REG_INT_CLEAR1, event1, intev_len);
1021 tps6598x_block_write(tps, TPS_REG_INT_CLEAR2, event2, intev_len);
1022
1023 if (!tps6598x_read_status(tps, &status))
1024 goto err_unlock;
1025
1026 if ((event1[0] | event2[0]) & TPS_REG_INT_POWER_STATUS_UPDATE)
1027 if (!tps6598x_read_power_status(tps))
1028 goto err_unlock;
1029
1030 if ((event1[0] | event2[0]) & TPS_REG_INT_DATA_STATUS_UPDATE)
1031 if (!tps->data->read_data_status(tps))
1032 goto err_unlock;
1033
1034 /* Handle plug insert or removal */
1035 if ((event1[0] | event2[0]) & TPS_REG_INT_PLUG_EVENT)
1036 tps6598x_handle_plug_event(tps, status);
1037
1038 err_unlock:
1039 mutex_unlock(&tps->lock);
1040
1041 if (event1[0] | event1[1] | event2[0] | event2[1])
1042 return IRQ_HANDLED;
1043
1044 return IRQ_NONE;
1045 }
1046
1047 /* Time interval for Polling */
1048 #define POLL_INTERVAL 500 /* msecs */
tps6598x_poll_work(struct work_struct * work)1049 static void tps6598x_poll_work(struct work_struct *work)
1050 {
1051 struct tps6598x *tps = container_of(to_delayed_work(work),
1052 struct tps6598x, wq_poll);
1053
1054 tps->data->irq_handler(0, tps);
1055 queue_delayed_work(system_power_efficient_wq,
1056 &tps->wq_poll, msecs_to_jiffies(POLL_INTERVAL));
1057 }
1058
tps6598x_check_mode(struct tps6598x * tps)1059 static int tps6598x_check_mode(struct tps6598x *tps)
1060 {
1061 char mode[5] = { };
1062 int ret;
1063
1064 ret = tps6598x_read32(tps, TPS_REG_MODE, (void *)mode);
1065 if (ret)
1066 return ret;
1067
1068 ret = match_string(modes, ARRAY_SIZE(modes), mode);
1069
1070 switch (ret) {
1071 case TPS_MODE_APP:
1072 case TPS_MODE_PTCH:
1073 return ret;
1074 case TPS_MODE_BOOT:
1075 dev_warn(tps->dev, "dead-battery condition\n");
1076 return ret;
1077 case TPS_MODE_BIST:
1078 case TPS_MODE_DISC:
1079 default:
1080 dev_err(tps->dev, "controller in unsupported mode \"%s\"\n",
1081 mode);
1082 break;
1083 }
1084
1085 return -ENODEV;
1086 }
1087
1088 static const struct regmap_config tps6598x_regmap_config = {
1089 .reg_bits = 8,
1090 .val_bits = 8,
1091 .max_register = 0x7F,
1092 };
1093
tps6598x_psy_get_online(struct tps6598x * tps,union power_supply_propval * val)1094 static int tps6598x_psy_get_online(struct tps6598x *tps,
1095 union power_supply_propval *val)
1096 {
1097 if (TPS_POWER_STATUS_CONNECTION(tps->pwr_status) &&
1098 TPS_POWER_STATUS_SOURCESINK(tps->pwr_status)) {
1099 val->intval = 1;
1100 } else {
1101 val->intval = 0;
1102 }
1103 return 0;
1104 }
1105
tps6598x_psy_get_prop(struct power_supply * psy,enum power_supply_property psp,union power_supply_propval * val)1106 static int tps6598x_psy_get_prop(struct power_supply *psy,
1107 enum power_supply_property psp,
1108 union power_supply_propval *val)
1109 {
1110 struct tps6598x *tps = power_supply_get_drvdata(psy);
1111 int ret = 0;
1112
1113 switch (psp) {
1114 case POWER_SUPPLY_PROP_USB_TYPE:
1115 if (TPS_POWER_STATUS_PWROPMODE(tps->pwr_status) == TYPEC_PWR_MODE_PD)
1116 val->intval = POWER_SUPPLY_USB_TYPE_PD;
1117 else
1118 val->intval = POWER_SUPPLY_USB_TYPE_C;
1119 break;
1120 case POWER_SUPPLY_PROP_ONLINE:
1121 ret = tps6598x_psy_get_online(tps, val);
1122 break;
1123 default:
1124 ret = -EINVAL;
1125 break;
1126 }
1127
1128 return ret;
1129 }
1130
cd321x_switch_power_state(struct tps6598x * tps,u8 target_state)1131 static int cd321x_switch_power_state(struct tps6598x *tps, u8 target_state)
1132 {
1133 u8 state;
1134 int ret;
1135
1136 ret = tps6598x_read8(tps, TPS_REG_SYSTEM_POWER_STATE, &state);
1137 if (ret)
1138 return ret;
1139
1140 if (state == target_state)
1141 return 0;
1142
1143 ret = tps6598x_exec_cmd(tps, "SSPS", sizeof(u8), &target_state, 0, NULL);
1144 if (ret)
1145 return ret;
1146
1147 ret = tps6598x_read8(tps, TPS_REG_SYSTEM_POWER_STATE, &state);
1148 if (ret)
1149 return ret;
1150
1151 if (state != target_state)
1152 return -EINVAL;
1153
1154 return 0;
1155 }
1156
devm_tps6598_psy_register(struct tps6598x * tps)1157 static int devm_tps6598_psy_register(struct tps6598x *tps)
1158 {
1159 struct power_supply_config psy_cfg = {};
1160 const char *port_dev_name = dev_name(tps->dev);
1161 char *psy_name;
1162
1163 psy_cfg.drv_data = tps;
1164 psy_cfg.fwnode = dev_fwnode(tps->dev);
1165
1166 psy_name = devm_kasprintf(tps->dev, GFP_KERNEL, "%s%s", tps6598x_psy_name_prefix,
1167 port_dev_name);
1168 if (!psy_name)
1169 return -ENOMEM;
1170
1171 tps->psy_desc.name = psy_name;
1172 tps->psy_desc.type = POWER_SUPPLY_TYPE_USB;
1173 tps->psy_desc.usb_types = BIT(POWER_SUPPLY_USB_TYPE_C) |
1174 BIT(POWER_SUPPLY_USB_TYPE_PD);
1175 tps->psy_desc.properties = tps6598x_psy_props;
1176 tps->psy_desc.num_properties = ARRAY_SIZE(tps6598x_psy_props);
1177 tps->psy_desc.get_property = tps6598x_psy_get_prop;
1178
1179 tps->usb_type = POWER_SUPPLY_USB_TYPE_C;
1180
1181 tps->psy = devm_power_supply_register(tps->dev, &tps->psy_desc,
1182 &psy_cfg);
1183 return PTR_ERR_OR_ZERO(tps->psy);
1184 }
1185
1186 static int
tps6598x_register_port(struct tps6598x * tps,struct fwnode_handle * fwnode)1187 tps6598x_register_port(struct tps6598x *tps, struct fwnode_handle *fwnode)
1188 {
1189 int ret;
1190 u32 conf;
1191 struct typec_capability typec_cap = { };
1192
1193 ret = tps6598x_read32(tps, TPS_REG_SYSTEM_CONF, &conf);
1194 if (ret)
1195 return ret;
1196
1197 typec_cap.revision = USB_TYPEC_REV_1_2;
1198 typec_cap.pd_revision = 0x200;
1199 typec_cap.prefer_role = TYPEC_NO_PREFERRED_ROLE;
1200 typec_cap.driver_data = tps;
1201 typec_cap.ops = &tps6598x_ops;
1202 typec_cap.fwnode = fwnode;
1203
1204 switch (TPS_SYSCONF_PORTINFO(conf)) {
1205 case TPS_PORTINFO_SINK_ACCESSORY:
1206 case TPS_PORTINFO_SINK:
1207 typec_cap.type = TYPEC_PORT_SNK;
1208 typec_cap.data = TYPEC_PORT_UFP;
1209 break;
1210 case TPS_PORTINFO_DRP_UFP_DRD:
1211 case TPS_PORTINFO_DRP_DFP_DRD:
1212 typec_cap.type = TYPEC_PORT_DRP;
1213 typec_cap.data = TYPEC_PORT_DRD;
1214 break;
1215 case TPS_PORTINFO_DRP_UFP:
1216 typec_cap.type = TYPEC_PORT_DRP;
1217 typec_cap.data = TYPEC_PORT_UFP;
1218 break;
1219 case TPS_PORTINFO_DRP_DFP:
1220 typec_cap.type = TYPEC_PORT_DRP;
1221 typec_cap.data = TYPEC_PORT_DFP;
1222 break;
1223 case TPS_PORTINFO_SOURCE:
1224 typec_cap.type = TYPEC_PORT_SRC;
1225 typec_cap.data = TYPEC_PORT_DFP;
1226 break;
1227 default:
1228 return -ENODEV;
1229 }
1230
1231 tps->port = typec_register_port(tps->dev, &typec_cap);
1232 if (IS_ERR(tps->port))
1233 return PTR_ERR(tps->port);
1234
1235 return 0;
1236 }
1237
cd321x_register_port_altmodes(struct cd321x * cd321x)1238 static int cd321x_register_port_altmodes(struct cd321x *cd321x)
1239 {
1240 struct typec_altmode_desc desc;
1241 struct typec_altmode *amode;
1242
1243 memset(&desc, 0, sizeof(desc));
1244 desc.svid = USB_TYPEC_DP_SID;
1245 desc.mode = USB_TYPEC_DP_MODE;
1246 desc.vdo = DP_CONF_SET_PIN_ASSIGN(BIT(DP_PIN_ASSIGN_C) | BIT(DP_PIN_ASSIGN_D));
1247 desc.vdo |= DP_CAP_DFP_D;
1248 amode = typec_port_register_altmode(cd321x->tps.port, &desc);
1249 if (IS_ERR(amode))
1250 return PTR_ERR(amode);
1251 cd321x->port_altmode_dp = amode;
1252
1253 memset(&desc, 0, sizeof(desc));
1254 desc.svid = USB_TYPEC_TBT_SID;
1255 desc.mode = TYPEC_ANY_MODE;
1256 amode = typec_port_register_altmode(cd321x->tps.port, &desc);
1257 if (IS_ERR(amode)) {
1258 typec_unregister_altmode(cd321x->port_altmode_dp);
1259 cd321x->port_altmode_dp = NULL;
1260 return PTR_ERR(amode);
1261 }
1262 cd321x->port_altmode_tbt = amode;
1263
1264 return 0;
1265 }
1266
1267 static int
cd321x_register_port(struct tps6598x * tps,struct fwnode_handle * fwnode)1268 cd321x_register_port(struct tps6598x *tps, struct fwnode_handle *fwnode)
1269 {
1270 struct cd321x *cd321x = container_of(tps, struct cd321x, tps);
1271 int ret;
1272
1273 INIT_DELAYED_WORK(&cd321x->update_work, cd321x_update_work);
1274
1275 ret = tps6598x_register_port(tps, fwnode);
1276 if (ret)
1277 return ret;
1278
1279 ret = cd321x_register_port_altmodes(cd321x);
1280 if (ret)
1281 goto err_unregister_port;
1282
1283 cd321x->mux = fwnode_typec_mux_get(fwnode);
1284 if (IS_ERR(cd321x->mux)) {
1285 ret = PTR_ERR(cd321x->mux);
1286 goto err_unregister_altmodes;
1287 }
1288
1289 cd321x->state.alt = NULL;
1290 cd321x->state.mode = TYPEC_STATE_SAFE;
1291 cd321x->state.data = NULL;
1292 typec_set_mode(tps->port, TYPEC_STATE_SAFE);
1293
1294 return 0;
1295
1296 err_unregister_altmodes:
1297 typec_unregister_altmode(cd321x->port_altmode_dp);
1298 typec_unregister_altmode(cd321x->port_altmode_tbt);
1299 cd321x->port_altmode_dp = NULL;
1300 cd321x->port_altmode_tbt = NULL;
1301 err_unregister_port:
1302 typec_unregister_port(tps->port);
1303 return ret;
1304 }
1305
1306 static void
tps6598x_unregister_port(struct tps6598x * tps)1307 tps6598x_unregister_port(struct tps6598x *tps)
1308 {
1309 typec_unregister_port(tps->port);
1310 }
1311
1312 static void
cd321x_unregister_port(struct tps6598x * tps)1313 cd321x_unregister_port(struct tps6598x *tps)
1314 {
1315 struct cd321x *cd321x = container_of(tps, struct cd321x, tps);
1316
1317 typec_mux_put(cd321x->mux);
1318 cd321x->mux = NULL;
1319 typec_unregister_altmode(cd321x->port_altmode_dp);
1320 cd321x->port_altmode_dp = NULL;
1321 typec_unregister_altmode(cd321x->port_altmode_tbt);
1322 cd321x->port_altmode_tbt = NULL;
1323 typec_unregister_port(tps->port);
1324 }
1325
tps_request_firmware(struct tps6598x * tps,const struct firmware ** fw,const char ** firmware_name)1326 static int tps_request_firmware(struct tps6598x *tps, const struct firmware **fw,
1327 const char **firmware_name)
1328 {
1329 int ret;
1330
1331 ret = device_property_read_string(tps->dev, "firmware-name",
1332 firmware_name);
1333 if (ret)
1334 return ret;
1335
1336 ret = request_firmware(fw, *firmware_name, tps->dev);
1337 if (ret) {
1338 dev_err(tps->dev, "failed to retrieve \"%s\"\n", *firmware_name);
1339 return ret;
1340 }
1341
1342 if ((*fw)->size == 0) {
1343 release_firmware(*fw);
1344 ret = -EINVAL;
1345 }
1346
1347 return ret;
1348 }
1349
1350 static int
tps25750_write_firmware(struct tps6598x * tps,u8 bpms_addr,const u8 * data,size_t len)1351 tps25750_write_firmware(struct tps6598x *tps,
1352 u8 bpms_addr, const u8 *data, size_t len)
1353 {
1354 struct i2c_client *client = to_i2c_client(tps->dev);
1355 int ret;
1356 u8 slave_addr;
1357 int timeout;
1358
1359 slave_addr = client->addr;
1360 timeout = client->adapter->timeout;
1361
1362 /*
1363 * binary configuration size is around ~16Kbytes
1364 * which might take some time to finish writing it
1365 */
1366 client->adapter->timeout = msecs_to_jiffies(5000);
1367 client->addr = bpms_addr;
1368
1369 ret = regmap_raw_write(tps->regmap, data[0], &data[1], len - 1);
1370
1371 client->addr = slave_addr;
1372 client->adapter->timeout = timeout;
1373
1374 return ret;
1375 }
1376
1377 static int
tps25750_exec_pbms(struct tps6598x * tps,u8 * in_data,size_t in_len)1378 tps25750_exec_pbms(struct tps6598x *tps, u8 *in_data, size_t in_len)
1379 {
1380 int ret;
1381 u8 rc;
1382
1383 ret = tps6598x_exec_cmd_tmo(tps, "PBMs", in_len, in_data,
1384 sizeof(rc), &rc, 4000, 0);
1385 if (ret)
1386 return ret;
1387
1388 switch (rc) {
1389 case TPS_TASK_BPMS_INVALID_BUNDLE_SIZE:
1390 dev_err(tps->dev, "%s: invalid fw size\n", __func__);
1391 return -EINVAL;
1392 case TPS_TASK_BPMS_INVALID_SLAVE_ADDR:
1393 dev_err(tps->dev, "%s: invalid slave address\n", __func__);
1394 return -EINVAL;
1395 case TPS_TASK_BPMS_INVALID_TIMEOUT:
1396 dev_err(tps->dev, "%s: timed out\n", __func__);
1397 return -ETIMEDOUT;
1398 default:
1399 break;
1400 }
1401
1402 return 0;
1403 }
1404
tps25750_abort_patch_process(struct tps6598x * tps)1405 static int tps25750_abort_patch_process(struct tps6598x *tps)
1406 {
1407 int ret;
1408
1409 ret = tps6598x_exec_cmd(tps, "PBMe", 0, NULL, 0, NULL);
1410 if (ret)
1411 return ret;
1412
1413 ret = tps6598x_check_mode(tps);
1414 if (ret != TPS_MODE_PTCH)
1415 dev_err(tps->dev, "failed to switch to \"PTCH\" mode\n");
1416
1417 return ret;
1418 }
1419
tps25750_start_patch_burst_mode(struct tps6598x * tps)1420 static int tps25750_start_patch_burst_mode(struct tps6598x *tps)
1421 {
1422 int ret;
1423 const struct firmware *fw;
1424 const char *firmware_name;
1425 struct {
1426 u32 fw_size;
1427 u8 addr;
1428 u8 timeout;
1429 } __packed bpms_data;
1430 u32 addr;
1431 struct device_node *np = tps->dev->of_node;
1432
1433 ret = tps_request_firmware(tps, &fw, &firmware_name);
1434 if (ret)
1435 return ret;
1436
1437 ret = of_property_match_string(np, "reg-names", "patch-address");
1438 if (ret < 0) {
1439 dev_err(tps->dev, "failed to get patch-address %d\n", ret);
1440 goto release_fw;
1441 }
1442
1443 ret = of_property_read_u32_index(np, "reg", ret, &addr);
1444 if (ret)
1445 goto release_fw;
1446
1447 if (addr == 0 || (addr >= 0x20 && addr <= 0x23)) {
1448 dev_err(tps->dev, "wrong patch address %u\n", addr);
1449 ret = -EINVAL;
1450 goto release_fw;
1451 }
1452
1453 bpms_data.addr = (u8)addr;
1454 bpms_data.fw_size = fw->size;
1455 bpms_data.timeout = TPS_BUNDLE_TIMEOUT;
1456
1457 ret = tps25750_exec_pbms(tps, (u8 *)&bpms_data, sizeof(bpms_data));
1458 if (ret)
1459 goto release_fw;
1460
1461 ret = tps25750_write_firmware(tps, bpms_data.addr, fw->data, fw->size);
1462 if (ret) {
1463 dev_err(tps->dev, "Failed to write patch %s of %zu bytes\n",
1464 firmware_name, fw->size);
1465 goto release_fw;
1466 }
1467
1468 /*
1469 * A delay of 500us is required after the firmware is written
1470 * based on pg.62 in tps6598x Host Interface Technical
1471 * Reference Manual
1472 * https://www.ti.com/lit/ug/slvuc05a/slvuc05a.pdf
1473 */
1474 udelay(500);
1475
1476 release_fw:
1477 release_firmware(fw);
1478
1479 return ret;
1480 }
1481
tps25750_complete_patch_process(struct tps6598x * tps)1482 static int tps25750_complete_patch_process(struct tps6598x *tps)
1483 {
1484 int ret;
1485 u8 out_data[40];
1486 u8 dummy[2] = { };
1487
1488 /*
1489 * Without writing something to DATA_IN, this command would
1490 * return an error
1491 */
1492 ret = tps6598x_exec_cmd_tmo(tps, "PBMc", sizeof(dummy), dummy,
1493 sizeof(out_data), out_data, 2000, 20);
1494 if (ret)
1495 return ret;
1496
1497 if (out_data[TPS_PBMC_RC]) {
1498 dev_err(tps->dev,
1499 "%s: pbmc failed: %u\n", __func__,
1500 out_data[TPS_PBMC_RC]);
1501 return -EIO;
1502 }
1503
1504 if (out_data[TPS_PBMC_DPCS]) {
1505 dev_err(tps->dev,
1506 "%s: failed device patch complete status: %u\n",
1507 __func__, out_data[TPS_PBMC_DPCS]);
1508 return -EIO;
1509 }
1510
1511 return 0;
1512 }
1513
tps25750_apply_patch(struct tps6598x * tps)1514 static int tps25750_apply_patch(struct tps6598x *tps)
1515 {
1516 int ret;
1517 unsigned long timeout;
1518 u64 status = 0;
1519
1520 ret = tps6598x_block_read(tps, TPS_REG_BOOT_STATUS, &status, 5);
1521 if (ret)
1522 return ret;
1523 /*
1524 * Nothing to be done if the configuration
1525 * is being loaded from EERPOM
1526 */
1527 if (status & TPS_BOOT_STATUS_I2C_EEPROM_PRESENT)
1528 goto wait_for_app;
1529
1530 ret = tps25750_start_patch_burst_mode(tps);
1531 if (ret) {
1532 tps25750_abort_patch_process(tps);
1533 return ret;
1534 }
1535
1536 ret = tps25750_complete_patch_process(tps);
1537 if (ret)
1538 return ret;
1539
1540 wait_for_app:
1541 timeout = jiffies + msecs_to_jiffies(1000);
1542
1543 do {
1544 ret = tps6598x_check_mode(tps);
1545 if (ret < 0)
1546 return ret;
1547
1548 if (time_is_before_jiffies(timeout))
1549 return -ETIMEDOUT;
1550
1551 } while (ret != TPS_MODE_APP);
1552
1553 /*
1554 * The dead battery flag may be triggered when the controller
1555 * port is connected to a device that can source power and
1556 * attempts to power up both the controller and the board it is on.
1557 * To restore controller functionality, it is necessary to clear
1558 * this flag
1559 */
1560 if (status & TPS_BOOT_STATUS_DEAD_BATTERY_FLAG) {
1561 ret = tps6598x_exec_cmd(tps, "DBfg", 0, NULL, 0, NULL);
1562 if (ret) {
1563 dev_err(tps->dev, "failed to clear dead battery %d\n", ret);
1564 return ret;
1565 }
1566 }
1567
1568 dev_info(tps->dev, "controller switched to \"APP\" mode\n");
1569
1570 return 0;
1571 };
1572
tps6598x_apply_patch(struct tps6598x * tps)1573 static int tps6598x_apply_patch(struct tps6598x *tps)
1574 {
1575 u8 in = TPS_PTCS_CONTENT_DEV | TPS_PTCS_CONTENT_APP;
1576 u8 out[TPS_MAX_LEN] = {0};
1577 size_t in_len = sizeof(in);
1578 size_t copied_bytes = 0;
1579 size_t bytes_left;
1580 const struct firmware *fw;
1581 const char *firmware_name;
1582 int ret;
1583
1584 ret = tps_request_firmware(tps, &fw, &firmware_name);
1585 if (ret)
1586 return ret;
1587
1588 ret = tps6598x_exec_cmd(tps, "PTCs", in_len, &in,
1589 TPS_PTCS_OUT_BYTES, out);
1590 if (ret || out[TPS_PTCS_STATUS] == TPS_PTCS_STATUS_FAIL) {
1591 if (!ret)
1592 ret = -EBUSY;
1593 dev_err(tps->dev, "Update start failed (%d)\n", ret);
1594 goto release_fw;
1595 }
1596
1597 bytes_left = fw->size;
1598 while (bytes_left) {
1599 in_len = min(bytes_left, TPS_MAX_LEN);
1600 ret = tps6598x_exec_cmd(tps, "PTCd", in_len,
1601 fw->data + copied_bytes,
1602 TPS_PTCD_OUT_BYTES, out);
1603 if (ret || out[TPS_PTCD_TRANSFER_STATUS] ||
1604 out[TPS_PTCD_LOADING_STATE] == TPS_PTCD_LOAD_ERR) {
1605 if (!ret)
1606 ret = -EBUSY;
1607 dev_err(tps->dev, "Patch download failed (%d)\n", ret);
1608 goto release_fw;
1609 }
1610 copied_bytes += in_len;
1611 bytes_left -= in_len;
1612 }
1613
1614 ret = tps6598x_exec_cmd(tps, "PTCc", 0, NULL, TPS_PTCC_OUT_BYTES, out);
1615 if (ret || out[TPS_PTCC_DEV] || out[TPS_PTCC_APP]) {
1616 if (!ret)
1617 ret = -EBUSY;
1618 dev_err(tps->dev, "Update completion failed (%d)\n", ret);
1619 goto release_fw;
1620 }
1621 msleep(TPS_SETUP_MS);
1622 dev_info(tps->dev, "Firmware update succeeded\n");
1623
1624 release_fw:
1625 if (ret) {
1626 dev_err(tps->dev, "Failed to write patch %s of %zu bytes\n",
1627 firmware_name, fw->size);
1628 }
1629 release_firmware(fw);
1630
1631 return ret;
1632 }
1633
cd321x_init(struct tps6598x * tps)1634 static int cd321x_init(struct tps6598x *tps)
1635 {
1636 return 0;
1637 }
1638
tps25750_init(struct tps6598x * tps)1639 static int tps25750_init(struct tps6598x *tps)
1640 {
1641 int ret;
1642
1643 ret = tps->data->apply_patch(tps);
1644 if (ret)
1645 return ret;
1646
1647 ret = tps6598x_write8(tps, TPS_REG_SLEEP_CONF,
1648 TPS_SLEEP_CONF_SLEEP_MODE_ALLOWED);
1649 if (ret)
1650 dev_warn(tps->dev,
1651 "%s: failed to enable sleep mode: %d\n",
1652 __func__, ret);
1653
1654 return 0;
1655 }
1656
tps6598x_init(struct tps6598x * tps)1657 static int tps6598x_init(struct tps6598x *tps)
1658 {
1659 return tps->data->apply_patch(tps);
1660 }
1661
cd321x_reset(struct tps6598x * tps)1662 static int cd321x_reset(struct tps6598x *tps)
1663 {
1664 return 0;
1665 }
1666
tps25750_reset(struct tps6598x * tps)1667 static int tps25750_reset(struct tps6598x *tps)
1668 {
1669 return tps6598x_exec_cmd_tmo(tps, "GAID", 0, NULL, 0, NULL, 2000, 0);
1670 }
1671
tps6598x_reset(struct tps6598x * tps)1672 static int tps6598x_reset(struct tps6598x *tps)
1673 {
1674 return 0;
1675 }
1676
1677 static int
tps25750_register_port(struct tps6598x * tps,struct fwnode_handle * fwnode)1678 tps25750_register_port(struct tps6598x *tps, struct fwnode_handle *fwnode)
1679 {
1680 struct typec_capability typec_cap = { };
1681 const char *data_role;
1682 u8 pd_status;
1683 int ret;
1684
1685 ret = tps6598x_read8(tps, TPS_REG_PD_STATUS, &pd_status);
1686 if (ret)
1687 return ret;
1688
1689 ret = fwnode_property_read_string(fwnode, "data-role", &data_role);
1690 if (ret) {
1691 dev_err(tps->dev, "data-role not found: %d\n", ret);
1692 return ret;
1693 }
1694
1695 ret = typec_find_port_data_role(data_role);
1696 if (ret < 0) {
1697 dev_err(tps->dev, "unknown data-role: %s\n", data_role);
1698 return ret;
1699 }
1700
1701 typec_cap.data = ret;
1702 typec_cap.revision = USB_TYPEC_REV_1_3;
1703 typec_cap.pd_revision = 0x300;
1704 typec_cap.orientation_aware = true;
1705 typec_cap.driver_data = tps;
1706 typec_cap.ops = &tps6598x_ops;
1707 typec_cap.fwnode = fwnode;
1708 typec_cap.prefer_role = TYPEC_NO_PREFERRED_ROLE;
1709
1710 switch (TPS_PD_STATUS_PORT_TYPE(pd_status)) {
1711 case TPS_PD_STATUS_PORT_TYPE_SINK_SOURCE:
1712 case TPS_PD_STATUS_PORT_TYPE_SOURCE_SINK:
1713 typec_cap.type = TYPEC_PORT_DRP;
1714 break;
1715 case TPS_PD_STATUS_PORT_TYPE_SINK:
1716 typec_cap.type = TYPEC_PORT_SNK;
1717 break;
1718 case TPS_PD_STATUS_PORT_TYPE_SOURCE:
1719 typec_cap.type = TYPEC_PORT_SRC;
1720 break;
1721 default:
1722 return -ENODEV;
1723 }
1724
1725 tps->port = typec_register_port(tps->dev, &typec_cap);
1726 if (IS_ERR(tps->port))
1727 return PTR_ERR(tps->port);
1728
1729 return 0;
1730 }
1731
cd321x_remove(struct tps6598x * tps)1732 static void cd321x_remove(struct tps6598x *tps)
1733 {
1734 struct cd321x *cd321x = container_of(tps, struct cd321x, tps);
1735
1736 cancel_delayed_work_sync(&cd321x->update_work);
1737 }
1738
tps6598x_probe(struct i2c_client * client)1739 static int tps6598x_probe(struct i2c_client *client)
1740 {
1741 const struct tipd_data *data;
1742 struct tps6598x *tps;
1743 struct fwnode_handle *fwnode;
1744 u32 status;
1745 u32 vid;
1746 int ret;
1747
1748 data = i2c_get_match_data(client);
1749 if (!data)
1750 return -EINVAL;
1751
1752 tps = devm_kzalloc(&client->dev, data->tps_struct_size, GFP_KERNEL);
1753 if (!tps)
1754 return -ENOMEM;
1755
1756 mutex_init(&tps->lock);
1757 tps->dev = &client->dev;
1758 tps->data = data;
1759
1760 tps->reset = devm_gpiod_get_optional(tps->dev, "reset", GPIOD_OUT_LOW);
1761 if (IS_ERR(tps->reset))
1762 return dev_err_probe(tps->dev, PTR_ERR(tps->reset),
1763 "failed to get reset GPIO\n");
1764 if (tps->reset)
1765 msleep(TPS_SETUP_MS);
1766
1767 tps->regmap = devm_regmap_init_i2c(client, &tps6598x_regmap_config);
1768 if (IS_ERR(tps->regmap))
1769 return PTR_ERR(tps->regmap);
1770
1771 if (!device_is_compatible(tps->dev, "ti,tps25750")) {
1772 ret = tps6598x_read32(tps, TPS_REG_VID, &vid);
1773 if (ret < 0 || !vid)
1774 return -ENODEV;
1775 }
1776
1777 /*
1778 * Checking can the adapter handle SMBus protocol. If it can not, the
1779 * driver needs to take care of block reads separately.
1780 */
1781 if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C))
1782 tps->i2c_protocol = true;
1783
1784 if (tps->data->switch_power_state) {
1785 ret = tps->data->switch_power_state(tps, TPS_SYSTEM_POWER_STATE_S0);
1786 if (ret)
1787 return ret;
1788 }
1789
1790 /* Make sure the controller has application firmware running */
1791 ret = tps6598x_check_mode(tps);
1792 if (ret < 0)
1793 return ret;
1794
1795 if (ret == TPS_MODE_PTCH) {
1796 ret = tps->data->init(tps);
1797 if (ret)
1798 return ret;
1799 }
1800
1801 ret = tps6598x_write64(tps, TPS_REG_INT_MASK1, tps->data->irq_mask1);
1802 if (ret)
1803 goto err_reset_controller;
1804
1805 if (!tps6598x_read_status(tps, &status)) {
1806 ret = -ENODEV;
1807 goto err_clear_mask;
1808 }
1809
1810 /*
1811 * This fwnode has a "compatible" property, but is never populated as a
1812 * struct device. Instead we simply parse it to read the properties.
1813 * This breaks fw_devlink=on. To maintain backward compatibility
1814 * with existing DT files, we work around this by deleting any
1815 * fwnode_links to/from this fwnode.
1816 */
1817 fwnode = device_get_named_child_node(&client->dev, "connector");
1818 if (fwnode)
1819 fw_devlink_purge_absent_suppliers(fwnode);
1820
1821 tps->role_sw = fwnode_usb_role_switch_get(fwnode);
1822 if (IS_ERR(tps->role_sw)) {
1823 ret = PTR_ERR(tps->role_sw);
1824 goto err_fwnode_put;
1825 }
1826
1827 ret = devm_tps6598_psy_register(tps);
1828 if (ret)
1829 goto err_role_put;
1830
1831 ret = tps->data->register_port(tps, fwnode);
1832 if (ret)
1833 goto err_role_put;
1834
1835 if (status & TPS_STATUS_PLUG_PRESENT) {
1836 if (!tps6598x_read_power_status(tps))
1837 goto err_unregister_port;
1838 if (!tps->data->read_data_status(tps))
1839 goto err_unregister_port;
1840 ret = tps->data->connect(tps, status);
1841 if (ret)
1842 dev_err(&client->dev, "failed to register partner\n");
1843 }
1844
1845 if (client->irq) {
1846 ret = devm_request_threaded_irq(&client->dev, client->irq, NULL,
1847 tps->data->irq_handler,
1848 IRQF_SHARED | IRQF_ONESHOT,
1849 dev_name(&client->dev), tps);
1850 } else {
1851 dev_warn(tps->dev, "Unable to find the interrupt, switching to polling\n");
1852 INIT_DELAYED_WORK(&tps->wq_poll, tps6598x_poll_work);
1853 queue_delayed_work(system_power_efficient_wq, &tps->wq_poll,
1854 msecs_to_jiffies(POLL_INTERVAL));
1855 }
1856
1857 if (ret)
1858 goto err_disconnect;
1859
1860 i2c_set_clientdata(client, tps);
1861 fwnode_handle_put(fwnode);
1862
1863 tps->wakeup = device_property_read_bool(tps->dev, "wakeup-source");
1864 if (tps->wakeup && client->irq) {
1865 devm_device_init_wakeup(&client->dev);
1866 enable_irq_wake(client->irq);
1867 }
1868
1869 return 0;
1870
1871 err_disconnect:
1872 tps6598x_disconnect(tps, 0);
1873 err_unregister_port:
1874 tps->data->unregister_port(tps);
1875 err_role_put:
1876 usb_role_switch_put(tps->role_sw);
1877 err_fwnode_put:
1878 fwnode_handle_put(fwnode);
1879 err_clear_mask:
1880 tps6598x_write64(tps, TPS_REG_INT_MASK1, 0);
1881 err_reset_controller:
1882 /* Reset PD controller to remove any applied patch */
1883 tps->data->reset(tps);
1884
1885 return ret;
1886 }
1887
tps6598x_remove(struct i2c_client * client)1888 static void tps6598x_remove(struct i2c_client *client)
1889 {
1890 struct tps6598x *tps = i2c_get_clientdata(client);
1891
1892 if (!client->irq)
1893 cancel_delayed_work_sync(&tps->wq_poll);
1894 else
1895 devm_free_irq(tps->dev, client->irq, tps);
1896
1897 if (tps->data->remove)
1898 tps->data->remove(tps);
1899
1900 tps6598x_disconnect(tps, 0);
1901 tps->data->unregister_port(tps);
1902 usb_role_switch_put(tps->role_sw);
1903
1904 /* Reset PD controller to remove any applied patch */
1905 tps->data->reset(tps);
1906
1907 if (tps->reset)
1908 gpiod_set_value_cansleep(tps->reset, 1);
1909 }
1910
tps6598x_suspend(struct device * dev)1911 static int __maybe_unused tps6598x_suspend(struct device *dev)
1912 {
1913 struct i2c_client *client = to_i2c_client(dev);
1914 struct tps6598x *tps = i2c_get_clientdata(client);
1915
1916 if (tps->wakeup) {
1917 disable_irq(client->irq);
1918 enable_irq_wake(client->irq);
1919 } else if (tps->reset) {
1920 gpiod_set_value_cansleep(tps->reset, 1);
1921 }
1922
1923 if (!client->irq)
1924 cancel_delayed_work_sync(&tps->wq_poll);
1925
1926 return 0;
1927 }
1928
tps6598x_resume(struct device * dev)1929 static int __maybe_unused tps6598x_resume(struct device *dev)
1930 {
1931 struct i2c_client *client = to_i2c_client(dev);
1932 struct tps6598x *tps = i2c_get_clientdata(client);
1933 int ret;
1934
1935 ret = tps6598x_check_mode(tps);
1936 if (ret < 0)
1937 return ret;
1938
1939 if (ret == TPS_MODE_PTCH) {
1940 ret = tps->data->init(tps);
1941 if (ret)
1942 return ret;
1943 }
1944
1945 if (tps->wakeup) {
1946 disable_irq_wake(client->irq);
1947 enable_irq(client->irq);
1948 } else if (tps->reset) {
1949 gpiod_set_value_cansleep(tps->reset, 0);
1950 msleep(TPS_SETUP_MS);
1951 }
1952
1953 if (!client->irq)
1954 queue_delayed_work(system_power_efficient_wq, &tps->wq_poll,
1955 msecs_to_jiffies(POLL_INTERVAL));
1956
1957 return 0;
1958 }
1959
1960 static const struct dev_pm_ops tps6598x_pm_ops = {
1961 SET_SYSTEM_SLEEP_PM_OPS(tps6598x_suspend, tps6598x_resume)
1962 };
1963
1964 static const struct tipd_data cd321x_data = {
1965 .irq_handler = cd321x_interrupt,
1966 .irq_mask1 = APPLE_CD_REG_INT_POWER_STATUS_UPDATE |
1967 APPLE_CD_REG_INT_DATA_STATUS_UPDATE |
1968 APPLE_CD_REG_INT_PLUG_EVENT,
1969 .tps_struct_size = sizeof(struct cd321x),
1970 .remove = cd321x_remove,
1971 .register_port = cd321x_register_port,
1972 .unregister_port = cd321x_unregister_port,
1973 .trace_data_status = trace_cd321x_data_status,
1974 .trace_power_status = trace_tps6598x_power_status,
1975 .trace_status = trace_tps6598x_status,
1976 .init = cd321x_init,
1977 .read_data_status = cd321x_read_data_status,
1978 .reset = cd321x_reset,
1979 .switch_power_state = cd321x_switch_power_state,
1980 .connect = cd321x_connect,
1981 };
1982
1983 static const struct tipd_data tps6598x_data = {
1984 .irq_handler = tps6598x_interrupt,
1985 .irq_mask1 = TPS_REG_INT_POWER_STATUS_UPDATE |
1986 TPS_REG_INT_DATA_STATUS_UPDATE |
1987 TPS_REG_INT_PLUG_EVENT,
1988 .tps_struct_size = sizeof(struct tps6598x),
1989 .register_port = tps6598x_register_port,
1990 .unregister_port = tps6598x_unregister_port,
1991 .trace_data_status = trace_tps6598x_data_status,
1992 .trace_power_status = trace_tps6598x_power_status,
1993 .trace_status = trace_tps6598x_status,
1994 .apply_patch = tps6598x_apply_patch,
1995 .init = tps6598x_init,
1996 .read_data_status = tps6598x_read_data_status,
1997 .reset = tps6598x_reset,
1998 .connect = tps6598x_connect,
1999 };
2000
2001 static const struct tipd_data tps25750_data = {
2002 .irq_handler = tps25750_interrupt,
2003 .irq_mask1 = TPS_REG_INT_POWER_STATUS_UPDATE |
2004 TPS_REG_INT_DATA_STATUS_UPDATE |
2005 TPS_REG_INT_PLUG_EVENT,
2006 .tps_struct_size = sizeof(struct tps6598x),
2007 .register_port = tps25750_register_port,
2008 .unregister_port = tps6598x_unregister_port,
2009 .trace_data_status = trace_tps6598x_data_status,
2010 .trace_power_status = trace_tps25750_power_status,
2011 .trace_status = trace_tps25750_status,
2012 .apply_patch = tps25750_apply_patch,
2013 .init = tps25750_init,
2014 .read_data_status = tps6598x_read_data_status,
2015 .reset = tps25750_reset,
2016 .connect = tps6598x_connect,
2017 };
2018
2019 static const struct of_device_id tps6598x_of_match[] = {
2020 { .compatible = "ti,tps6598x", &tps6598x_data},
2021 { .compatible = "apple,cd321x", &cd321x_data},
2022 { .compatible = "ti,tps25750", &tps25750_data},
2023 {}
2024 };
2025 MODULE_DEVICE_TABLE(of, tps6598x_of_match);
2026
2027 static const struct i2c_device_id tps6598x_id[] = {
2028 { "tps6598x", (kernel_ulong_t)&tps6598x_data },
2029 { }
2030 };
2031 MODULE_DEVICE_TABLE(i2c, tps6598x_id);
2032
2033 static struct i2c_driver tps6598x_i2c_driver = {
2034 .driver = {
2035 .name = "tps6598x",
2036 .pm = &tps6598x_pm_ops,
2037 .of_match_table = tps6598x_of_match,
2038 },
2039 .probe = tps6598x_probe,
2040 .remove = tps6598x_remove,
2041 .id_table = tps6598x_id,
2042 };
2043 module_i2c_driver(tps6598x_i2c_driver);
2044
2045 MODULE_AUTHOR("Heikki Krogerus <heikki.krogerus@linux.intel.com>");
2046 MODULE_LICENSE("GPL v2");
2047 MODULE_DESCRIPTION("TI TPS6598x USB Power Delivery Controller Driver");
2048