1 // SPDX-License-Identifier: GPL-2.0-only
2
3 /*
4 * Driver for Analogix ANX7411 USB Type-C and PD controller
5 *
6 * Copyright(c) 2022, Analogix Semiconductor. All rights reserved.
7 *
8 */
9 #include <linux/gpio/consumer.h>
10 #include <linux/i2c.h>
11 #include <linux/interrupt.h>
12 #include <linux/iopoll.h>
13 #include <linux/kernel.h>
14 #include <linux/module.h>
15 #include <linux/mutex.h>
16 #include <linux/of_graph.h>
17 #include <linux/of_platform.h>
18 #include <linux/pm_runtime.h>
19 #include <linux/regulator/consumer.h>
20 #include <linux/slab.h>
21 #include <linux/types.h>
22 #include <linux/usb/pd.h>
23 #include <linux/usb/role.h>
24 #include <linux/usb/tcpci.h>
25 #include <linux/usb/typec.h>
26 #include <linux/usb/typec_dp.h>
27 #include <linux/usb/typec_mux.h>
28 #include <linux/workqueue.h>
29 #include <linux/power_supply.h>
30
31 #define TCPC_ADDRESS1 0x58
32 #define TCPC_ADDRESS2 0x56
33 #define TCPC_ADDRESS3 0x54
34 #define TCPC_ADDRESS4 0x52
35 #define SPI_ADDRESS1 0x7e
36 #define SPI_ADDRESS2 0x6e
37 #define SPI_ADDRESS3 0x64
38 #define SPI_ADDRESS4 0x62
39
40 struct anx7411_i2c_select {
41 u8 tcpc_address;
42 u8 spi_address;
43 };
44
45 #define VID_ANALOGIX 0x1F29
46 #define PID_ANALOGIX 0x7411
47
48 /* TCPC register define */
49
50 #define ANALOG_CTRL_10 0xAA
51
52 #define STATUS_LEN 2
53 #define ALERT_0 0xCB
54 #define RECEIVED_MSG BIT(7)
55 #define SOFTWARE_INT BIT(6)
56 #define MSG_LEN 32
57 #define HEADER_LEN 2
58 #define MSG_HEADER 0x00
59 #define MSG_TYPE 0x01
60 #define MSG_RAWDATA 0x02
61 #define MSG_LEN_MASK 0x1F
62
63 #define ALERT_1 0xCC
64 #define INTP_POW_ON BIT(7)
65 #define INTP_POW_OFF BIT(6)
66
67 #define VBUS_THRESHOLD_H 0xDD
68 #define VBUS_THRESHOLD_L 0xDE
69
70 #define FW_CTRL_0 0xF0
71 #define UNSTRUCT_VDM_EN BIT(0)
72 #define DELAY_200MS BIT(1)
73 #define VSAFE0 0
74 #define VSAFE1 BIT(2)
75 #define VSAFE2 BIT(3)
76 #define VSAFE3 (BIT(2) | BIT(3))
77 #define FRS_EN BIT(7)
78
79 #define FW_PARAM 0xF1
80 #define DONGLE_IOP BIT(0)
81
82 #define FW_CTRL_2 0xF7
83 #define SINK_CTRL_DIS_FLAG BIT(5)
84
85 /* SPI register define */
86 #define OCM_CTRL_0 0x6E
87 #define OCM_RESET BIT(6)
88
89 #define MAX_VOLTAGE 0xAC
90 #define MAX_POWER 0xAD
91 #define MIN_POWER 0xAE
92
93 #define REQUEST_VOLTAGE 0xAF
94 #define VOLTAGE_UNIT 100 /* mV per unit */
95
96 #define REQUEST_CURRENT 0xB1
97 #define CURRENT_UNIT 50 /* mA per unit */
98
99 #define CMD_SEND_BUF 0xC0
100 #define CMD_RECV_BUF 0xE0
101
102 #define REQ_VOL_20V_IN_100MV 0xC8
103 #define REQ_CUR_2_25A_IN_50MA 0x2D
104 #define REQ_CUR_3_25A_IN_50MA 0x41
105
106 #define DEF_5V 5000
107 #define DEF_1_5A 1500
108
109 #define LOBYTE(w) ((u8)((w) & 0xFF))
110 #define HIBYTE(w) ((u8)(((u16)(w) >> 8) & 0xFF))
111
112 enum anx7411_typec_message_type {
113 TYPE_SRC_CAP = 0x00,
114 TYPE_SNK_CAP = 0x01,
115 TYPE_SNK_IDENTITY = 0x02,
116 TYPE_SVID = 0x03,
117 TYPE_SET_SNK_DP_CAP = 0x08,
118 TYPE_PSWAP_REQ = 0x10,
119 TYPE_DSWAP_REQ = 0x11,
120 TYPE_VDM = 0x14,
121 TYPE_OBJ_REQ = 0x16,
122 TYPE_DP_ALT_ENTER = 0x19,
123 TYPE_DP_DISCOVER_MODES_INFO = 0x27,
124 TYPE_GET_DP_CONFIG = 0x29,
125 TYPE_DP_CONFIGURE = 0x2A,
126 TYPE_GET_DP_DISCOVER_MODES_INFO = 0x2E,
127 TYPE_GET_DP_ALT_ENTER = 0x2F,
128 };
129
130 #define FW_CTRL_1 0xB2
131 #define AUTO_PD_EN BIT(1)
132 #define TRYSRC_EN BIT(2)
133 #define TRYSNK_EN BIT(3)
134 #define FORCE_SEND_RDO BIT(6)
135
136 #define FW_VER 0xB4
137 #define FW_SUBVER 0xB5
138
139 #define INT_MASK 0xB6
140 #define INT_STS 0xB7
141 #define OCM_BOOT_UP BIT(0)
142 #define OC_OV_EVENT BIT(1)
143 #define VCONN_CHANGE BIT(2)
144 #define VBUS_CHANGE BIT(3)
145 #define CC_STATUS_CHANGE BIT(4)
146 #define DATA_ROLE_CHANGE BIT(5)
147 #define PR_CONSUMER_GOT_POWER BIT(6)
148 #define HPD_STATUS_CHANGE BIT(7)
149
150 #define SYSTEM_STSTUS 0xB8
151 /* 0: SINK off; 1: SINK on */
152 #define SINK_STATUS BIT(1)
153 /* 0: VCONN off; 1: VCONN on*/
154 #define VCONN_STATUS BIT(2)
155 /* 0: vbus off; 1: vbus on*/
156 #define VBUS_STATUS BIT(3)
157 /* 1: host; 0:device*/
158 #define DATA_ROLE BIT(5)
159 /* 0: Chunking; 1: Unchunked*/
160 #define SUPPORT_UNCHUNKING BIT(6)
161 /* 0: HPD low; 1: HPD high*/
162 #define HPD_STATUS BIT(7)
163
164 #define DATA_DFP 1
165 #define DATA_UFP 2
166 #define POWER_SOURCE 1
167 #define POWER_SINK 2
168
169 #define CC_STATUS 0xB9
170 #define CC1_RD BIT(0)
171 #define CC2_RD BIT(4)
172 #define CC1_RA BIT(1)
173 #define CC2_RA BIT(5)
174 #define CC1_RD BIT(0)
175 #define CC1_RP(cc) (((cc) >> 2) & 0x03)
176 #define CC2_RP(cc) (((cc) >> 6) & 0x03)
177
178 #define PD_REV_INIT 0xBA
179
180 #define PD_EXT_MSG_CTRL 0xBB
181 #define SRC_CAP_EXT_REPLY BIT(0)
182 #define MANUFACTURER_INFO_REPLY BIT(1)
183 #define BATTERY_STS_REPLY BIT(2)
184 #define BATTERY_CAP_REPLY BIT(3)
185 #define ALERT_REPLY BIT(4)
186 #define STATUS_REPLY BIT(5)
187 #define PPS_STATUS_REPLY BIT(6)
188 #define SNK_CAP_EXT_REPLY BIT(7)
189
190 #define NO_CONNECT 0x00
191 #define USB3_1_CONNECTED 0x01
192 #define DP_ALT_4LANES 0x02
193 #define USB3_1_DP_2LANES 0x03
194 #define CC1_CONNECTED 0x01
195 #define CC2_CONNECTED 0x02
196 #define SELECT_PIN_ASSIGMENT_C 0x04
197 #define SELECT_PIN_ASSIGMENT_D 0x08
198 #define SELECT_PIN_ASSIGMENT_E 0x10
199 #define SELECT_PIN_ASSIGMENT_U 0x00
200 #define REDRIVER_ADDRESS 0x20
201 #define REDRIVER_OFFSET 0x00
202
203 #define DP_SVID 0xFF01
204 #define VDM_ACK 0x40
205 #define VDM_CMD_RES 0x00
206 #define VDM_CMD_DIS_ID 0x01
207 #define VDM_CMD_DIS_SVID 0x02
208 #define VDM_CMD_DIS_MOD 0x03
209 #define VDM_CMD_ENTER_MODE 0x04
210 #define VDM_CMD_EXIT_MODE 0x05
211 #define VDM_CMD_ATTENTION 0x06
212 #define VDM_CMD_GET_STS 0x10
213 #define VDM_CMD_AND_ACK_MASK 0x5F
214
215 #define MAX_ALTMODE 2
216
217 #define HAS_SOURCE_CAP BIT(0)
218 #define HAS_SINK_CAP BIT(1)
219 #define HAS_SINK_WATT BIT(2)
220
221 enum anx7411_psy_state {
222 /* copy from drivers/usb/typec/tcpm */
223 ANX7411_PSY_OFFLINE = 0,
224 ANX7411_PSY_FIXED_ONLINE,
225
226 /* private */
227 /* PD keep in, but disconnct power to bq25700,
228 * this state can be active when higher capacity adapter plug in,
229 * and change to ONLINE state when higher capacity adapter plug out
230 */
231 ANX7411_PSY_HANG = 0xff,
232 };
233
234 struct typec_params {
235 int request_current; /* ma */
236 int request_voltage; /* mv */
237 int cc_connect;
238 int cc_orientation_valid;
239 int cc_status;
240 int data_role;
241 int power_role;
242 int vconn_role;
243 int dp_altmode_enter;
244 int cust_altmode_enter;
245 struct usb_role_switch *role_sw;
246 struct typec_port *port;
247 struct typec_partner *partner;
248 struct typec_mux_dev *typec_mux;
249 struct typec_switch_dev *typec_switch;
250 struct typec_altmode *amode[MAX_ALTMODE];
251 struct typec_altmode *port_amode[MAX_ALTMODE];
252 struct typec_displayport_data data;
253 int pin_assignment;
254 struct typec_capability caps;
255 u32 src_pdo[PDO_MAX_OBJECTS];
256 u32 sink_pdo[PDO_MAX_OBJECTS];
257 u8 caps_flags;
258 u8 src_pdo_nr;
259 u8 sink_pdo_nr;
260 u8 sink_watt;
261 u8 sink_voltage;
262 };
263
264 #define MAX_BUF_LEN 30
265 struct fw_msg {
266 u8 msg_len;
267 u8 msg_type;
268 u8 buf[MAX_BUF_LEN];
269 } __packed;
270
271 struct anx7411_data {
272 int fw_version;
273 int fw_subversion;
274 struct i2c_client *tcpc_client;
275 struct i2c_client *spi_client;
276 struct fw_msg send_msg;
277 struct fw_msg recv_msg;
278 struct gpio_desc *intp_gpiod;
279 struct fwnode_handle *connector_fwnode;
280 struct typec_params typec;
281 int intp_irq;
282 struct work_struct work;
283 struct workqueue_struct *workqueue;
284 /* Lock for interrupt work queue */
285 struct mutex lock;
286
287 enum anx7411_psy_state psy_online;
288 enum power_supply_usb_type usb_type;
289 struct power_supply *psy;
290 struct power_supply_desc psy_desc;
291 struct device *dev;
292 };
293
294 static u8 snk_identity[] = {
295 LOBYTE(VID_ANALOGIX), HIBYTE(VID_ANALOGIX), 0x00, 0x82, /* snk_id_hdr */
296 0x00, 0x00, 0x00, 0x00, /* snk_cert */
297 0x00, 0x00, LOBYTE(PID_ANALOGIX), HIBYTE(PID_ANALOGIX), /* 5snk_ama */
298 };
299
300 static u8 dp_caps[4] = {0xC6, 0x00, 0x00, 0x00};
301
anx7411_reg_read(struct i2c_client * client,u8 reg_addr)302 static int anx7411_reg_read(struct i2c_client *client,
303 u8 reg_addr)
304 {
305 return i2c_smbus_read_byte_data(client, reg_addr);
306 }
307
anx7411_reg_block_read(struct i2c_client * client,u8 reg_addr,u8 len,u8 * buf)308 static int anx7411_reg_block_read(struct i2c_client *client,
309 u8 reg_addr, u8 len, u8 *buf)
310 {
311 return i2c_smbus_read_i2c_block_data(client, reg_addr, len, buf);
312 }
313
anx7411_reg_write(struct i2c_client * client,u8 reg_addr,u8 reg_val)314 static int anx7411_reg_write(struct i2c_client *client,
315 u8 reg_addr, u8 reg_val)
316 {
317 return i2c_smbus_write_byte_data(client, reg_addr, reg_val);
318 }
319
anx7411_reg_block_write(struct i2c_client * client,u8 reg_addr,u8 len,u8 * buf)320 static int anx7411_reg_block_write(struct i2c_client *client,
321 u8 reg_addr, u8 len, u8 *buf)
322 {
323 return i2c_smbus_write_i2c_block_data(client, reg_addr, len, buf);
324 }
325
326 static struct anx7411_i2c_select anx7411_i2c_addr[] = {
327 {TCPC_ADDRESS1, SPI_ADDRESS1},
328 {TCPC_ADDRESS2, SPI_ADDRESS2},
329 {TCPC_ADDRESS3, SPI_ADDRESS3},
330 {TCPC_ADDRESS4, SPI_ADDRESS4},
331 };
332
anx7411_detect_power_mode(struct anx7411_data * ctx)333 static int anx7411_detect_power_mode(struct anx7411_data *ctx)
334 {
335 int ret;
336 int mode;
337
338 ret = anx7411_reg_read(ctx->spi_client, REQUEST_CURRENT);
339 if (ret < 0)
340 return ret;
341
342 ctx->typec.request_current = ret * CURRENT_UNIT; /* 50ma per unit */
343
344 ret = anx7411_reg_read(ctx->spi_client, REQUEST_VOLTAGE);
345 if (ret < 0)
346 return ret;
347
348 ctx->typec.request_voltage = ret * VOLTAGE_UNIT; /* 100mv per unit */
349
350 if (ctx->psy_online == ANX7411_PSY_OFFLINE) {
351 ctx->psy_online = ANX7411_PSY_FIXED_ONLINE;
352 ctx->usb_type = POWER_SUPPLY_USB_TYPE_PD;
353 power_supply_changed(ctx->psy);
354 }
355
356 if (!ctx->typec.cc_orientation_valid)
357 return 0;
358
359 if (ctx->typec.cc_connect == CC1_CONNECTED)
360 mode = CC1_RP(ctx->typec.cc_status);
361 else
362 mode = CC2_RP(ctx->typec.cc_status);
363 if (mode) {
364 typec_set_pwr_opmode(ctx->typec.port, mode - 1);
365 return 0;
366 }
367
368 typec_set_pwr_opmode(ctx->typec.port, TYPEC_PWR_MODE_PD);
369
370 return 0;
371 }
372
anx7411_register_partner(struct anx7411_data * ctx,int pd,int accessory)373 static int anx7411_register_partner(struct anx7411_data *ctx,
374 int pd, int accessory)
375 {
376 struct typec_partner_desc desc;
377 struct typec_partner *partner;
378
379 if (ctx->typec.partner)
380 return 0;
381
382 desc.usb_pd = pd;
383 desc.accessory = accessory;
384 desc.identity = NULL;
385 partner = typec_register_partner(ctx->typec.port, &desc);
386 if (IS_ERR(partner))
387 return PTR_ERR(partner);
388
389 ctx->typec.partner = partner;
390
391 return 0;
392 }
393
anx7411_detect_cc_orientation(struct anx7411_data * ctx)394 static int anx7411_detect_cc_orientation(struct anx7411_data *ctx)
395 {
396 struct device *dev = &ctx->spi_client->dev;
397 int ret;
398 int cc1_rd, cc2_rd;
399 int cc1_ra, cc2_ra;
400 int cc1_rp, cc2_rp;
401
402 ret = anx7411_reg_read(ctx->spi_client, CC_STATUS);
403 if (ret < 0)
404 return ret;
405
406 ctx->typec.cc_status = ret;
407
408 cc1_rd = ret & CC1_RD ? 1 : 0;
409 cc2_rd = ret & CC2_RD ? 1 : 0;
410 cc1_ra = ret & CC1_RA ? 1 : 0;
411 cc2_ra = ret & CC2_RA ? 1 : 0;
412 cc1_rp = CC1_RP(ret);
413 cc2_rp = CC2_RP(ret);
414
415 /* Debug cable, nothing to do */
416 if (cc1_rd && cc2_rd) {
417 ctx->typec.cc_orientation_valid = 0;
418 return anx7411_register_partner(ctx, 0, TYPEC_ACCESSORY_DEBUG);
419 }
420
421 if (cc1_ra && cc2_ra) {
422 ctx->typec.cc_orientation_valid = 0;
423 return anx7411_register_partner(ctx, 0, TYPEC_ACCESSORY_AUDIO);
424 }
425
426 ctx->typec.cc_orientation_valid = 1;
427
428 ret = anx7411_register_partner(ctx, 1, TYPEC_ACCESSORY_NONE);
429 if (ret) {
430 dev_err(dev, "register partner\n");
431 return ret;
432 }
433
434 if (cc1_rd || cc1_rp) {
435 typec_set_orientation(ctx->typec.port, TYPEC_ORIENTATION_NORMAL);
436 ctx->typec.cc_connect = CC1_CONNECTED;
437 }
438
439 if (cc2_rd || cc2_rp) {
440 typec_set_orientation(ctx->typec.port, TYPEC_ORIENTATION_REVERSE);
441 ctx->typec.cc_connect = CC2_CONNECTED;
442 }
443
444 return 0;
445 }
446
anx7411_set_mux(struct anx7411_data * ctx,int pin_assignment)447 static int anx7411_set_mux(struct anx7411_data *ctx, int pin_assignment)
448 {
449 int mode = TYPEC_STATE_SAFE;
450
451 switch (pin_assignment) {
452 case SELECT_PIN_ASSIGMENT_U:
453 /* default 4 line USB 3.1 */
454 mode = TYPEC_STATE_MODAL;
455 break;
456 case SELECT_PIN_ASSIGMENT_C:
457 case SELECT_PIN_ASSIGMENT_E:
458 /* 4 line DP */
459 mode = TYPEC_STATE_SAFE;
460 break;
461 case SELECT_PIN_ASSIGMENT_D:
462 /* 2 line DP, 2 line USB */
463 mode = TYPEC_MODE_USB3;
464 break;
465 default:
466 mode = TYPEC_STATE_SAFE;
467 break;
468 }
469
470 ctx->typec.pin_assignment = pin_assignment;
471
472 return typec_set_mode(ctx->typec.port, mode);
473 }
474
anx7411_set_usb_role(struct anx7411_data * ctx,enum usb_role role)475 static int anx7411_set_usb_role(struct anx7411_data *ctx, enum usb_role role)
476 {
477 if (!ctx->typec.role_sw)
478 return 0;
479
480 return usb_role_switch_set_role(ctx->typec.role_sw, role);
481 }
482
anx7411_data_role_detect(struct anx7411_data * ctx)483 static int anx7411_data_role_detect(struct anx7411_data *ctx)
484 {
485 int ret;
486
487 ret = anx7411_reg_read(ctx->spi_client, SYSTEM_STSTUS);
488 if (ret < 0)
489 return ret;
490
491 ctx->typec.data_role = (ret & DATA_ROLE) ? TYPEC_HOST : TYPEC_DEVICE;
492 ctx->typec.vconn_role = (ret & VCONN_STATUS) ? TYPEC_SOURCE : TYPEC_SINK;
493
494 typec_set_data_role(ctx->typec.port, ctx->typec.data_role);
495
496 typec_set_vconn_role(ctx->typec.port, ctx->typec.vconn_role);
497
498 if (ctx->typec.data_role == TYPEC_HOST)
499 return anx7411_set_usb_role(ctx, USB_ROLE_HOST);
500
501 return anx7411_set_usb_role(ctx, USB_ROLE_DEVICE);
502 }
503
anx7411_power_role_detect(struct anx7411_data * ctx)504 static int anx7411_power_role_detect(struct anx7411_data *ctx)
505 {
506 int ret;
507
508 ret = anx7411_reg_read(ctx->spi_client, SYSTEM_STSTUS);
509 if (ret < 0)
510 return ret;
511
512 ctx->typec.power_role = (ret & SINK_STATUS) ? TYPEC_SINK : TYPEC_SOURCE;
513
514 if (ctx->typec.power_role == TYPEC_SOURCE) {
515 ctx->typec.request_current = DEF_1_5A;
516 ctx->typec.request_voltage = DEF_5V;
517 }
518
519 typec_set_pwr_role(ctx->typec.port, ctx->typec.power_role);
520
521 return 0;
522 }
523
anx7411_cc_status_detect(struct anx7411_data * ctx)524 static int anx7411_cc_status_detect(struct anx7411_data *ctx)
525 {
526 anx7411_detect_cc_orientation(ctx);
527 anx7411_detect_power_mode(ctx);
528
529 return 0;
530 }
531
anx7411_partner_unregister_altmode(struct anx7411_data * ctx)532 static void anx7411_partner_unregister_altmode(struct anx7411_data *ctx)
533 {
534 int i;
535
536 ctx->typec.dp_altmode_enter = 0;
537 ctx->typec.cust_altmode_enter = 0;
538
539 for (i = 0; i < MAX_ALTMODE; i++)
540 if (ctx->typec.amode[i]) {
541 typec_unregister_altmode(ctx->typec.amode[i]);
542 ctx->typec.amode[i] = NULL;
543 }
544
545 ctx->typec.pin_assignment = 0;
546 }
547
anx7411_typec_register_altmode(struct anx7411_data * ctx,int svid,int vdo)548 static int anx7411_typec_register_altmode(struct anx7411_data *ctx,
549 int svid, int vdo)
550 {
551 struct device *dev = &ctx->spi_client->dev;
552 struct typec_altmode_desc desc;
553 int err;
554 int i;
555
556 desc.svid = svid;
557 desc.vdo = vdo;
558
559 for (i = 0; i < MAX_ALTMODE; i++)
560 if (!ctx->typec.amode[i])
561 break;
562
563 desc.mode = i + 1; /* start with 1 */
564
565 if (i >= MAX_ALTMODE) {
566 dev_err(dev, "no altmode space for registering\n");
567 return -ENOMEM;
568 }
569
570 ctx->typec.amode[i] = typec_partner_register_altmode(ctx->typec.partner,
571 &desc);
572 if (IS_ERR(ctx->typec.amode[i])) {
573 dev_err(dev, "failed to register altmode\n");
574 err = PTR_ERR(ctx->typec.amode[i]);
575 ctx->typec.amode[i] = NULL;
576 return err;
577 }
578
579 return 0;
580 }
581
anx7411_unregister_partner(struct anx7411_data * ctx)582 static void anx7411_unregister_partner(struct anx7411_data *ctx)
583 {
584 if (ctx->typec.partner) {
585 typec_unregister_partner(ctx->typec.partner);
586 ctx->typec.partner = NULL;
587 }
588 }
589
anx7411_update_altmode(struct anx7411_data * ctx,int svid)590 static int anx7411_update_altmode(struct anx7411_data *ctx, int svid)
591 {
592 int i;
593
594 if (svid == DP_SVID)
595 ctx->typec.dp_altmode_enter = 1;
596 else
597 ctx->typec.cust_altmode_enter = 1;
598
599 for (i = 0; i < MAX_ALTMODE; i++) {
600 if (!ctx->typec.amode[i])
601 continue;
602
603 if (ctx->typec.amode[i]->svid == svid) {
604 typec_altmode_update_active(ctx->typec.amode[i], true);
605 typec_altmode_notify(ctx->typec.amode[i],
606 ctx->typec.pin_assignment,
607 &ctx->typec.data);
608 break;
609 }
610 }
611
612 return 0;
613 }
614
anx7411_register_altmode(struct anx7411_data * ctx,bool dp_altmode,u8 * buf)615 static int anx7411_register_altmode(struct anx7411_data *ctx,
616 bool dp_altmode, u8 *buf)
617 {
618 int ret;
619 int svid;
620 int mid;
621
622 if (!ctx->typec.partner)
623 return 0;
624
625 svid = DP_SVID;
626 if (dp_altmode) {
627 mid = buf[0] | (buf[1] << 8) | (buf[2] << 16) | (buf[3] << 24);
628
629 return anx7411_typec_register_altmode(ctx, svid, mid);
630 }
631
632 svid = (buf[3] << 8) | buf[2];
633 if ((buf[0] & VDM_CMD_AND_ACK_MASK) != (VDM_ACK | VDM_CMD_ENTER_MODE))
634 return anx7411_update_altmode(ctx, svid);
635
636 if ((buf[0] & VDM_CMD_AND_ACK_MASK) != (VDM_ACK | VDM_CMD_DIS_MOD))
637 return 0;
638
639 mid = buf[4] | (buf[5] << 8) | (buf[6] << 16) | (buf[7] << 24);
640
641 ret = anx7411_typec_register_altmode(ctx, svid, mid);
642 if (ctx->typec.cust_altmode_enter)
643 ret |= anx7411_update_altmode(ctx, svid);
644
645 return ret;
646 }
647
anx7411_parse_cmd(struct anx7411_data * ctx,u8 type,u8 * buf,u8 len)648 static int anx7411_parse_cmd(struct anx7411_data *ctx, u8 type, u8 *buf, u8 len)
649 {
650 struct device *dev = &ctx->spi_client->dev;
651 u8 cur_50ma, vol_100mv;
652
653 switch (type) {
654 case TYPE_SRC_CAP:
655 cur_50ma = anx7411_reg_read(ctx->spi_client, REQUEST_CURRENT);
656 vol_100mv = anx7411_reg_read(ctx->spi_client, REQUEST_VOLTAGE);
657
658 ctx->typec.request_voltage = vol_100mv * VOLTAGE_UNIT;
659 ctx->typec.request_current = cur_50ma * CURRENT_UNIT;
660
661 ctx->psy_online = ANX7411_PSY_FIXED_ONLINE;
662 ctx->usb_type = POWER_SUPPLY_USB_TYPE_PD;
663 power_supply_changed(ctx->psy);
664 break;
665 case TYPE_SNK_CAP:
666 break;
667 case TYPE_SVID:
668 break;
669 case TYPE_SNK_IDENTITY:
670 break;
671 case TYPE_GET_DP_ALT_ENTER:
672 /* DP alt mode enter success */
673 if (buf[0])
674 anx7411_update_altmode(ctx, DP_SVID);
675 break;
676 case TYPE_DP_ALT_ENTER:
677 /* Update DP altmode */
678 anx7411_update_altmode(ctx, DP_SVID);
679 break;
680 case TYPE_OBJ_REQ:
681 anx7411_detect_power_mode(ctx);
682 break;
683 case TYPE_DP_CONFIGURE:
684 anx7411_set_mux(ctx, buf[1]);
685 break;
686 case TYPE_DP_DISCOVER_MODES_INFO:
687 /* Make sure discover modes valid */
688 if (buf[0] | buf[1])
689 /* Register DP Altmode */
690 anx7411_register_altmode(ctx, 1, buf);
691 break;
692 case TYPE_VDM:
693 /* Register other altmode */
694 anx7411_register_altmode(ctx, 0, buf);
695 break;
696 default:
697 dev_err(dev, "ignore message(0x%.02x).\n", type);
698 break;
699 }
700
701 return 0;
702 }
703
checksum(struct device * dev,u8 * buf,u8 len)704 static u8 checksum(struct device *dev, u8 *buf, u8 len)
705 {
706 u8 ret = 0;
707 u8 i;
708
709 for (i = 0; i < len; i++)
710 ret += buf[i];
711
712 return ret;
713 }
714
anx7411_read_msg_ctrl_status(struct i2c_client * client)715 static int anx7411_read_msg_ctrl_status(struct i2c_client *client)
716 {
717 return anx7411_reg_read(client, CMD_SEND_BUF);
718 }
719
anx7411_wait_msg_empty(struct i2c_client * client)720 static int anx7411_wait_msg_empty(struct i2c_client *client)
721 {
722 int val;
723
724 return readx_poll_timeout(anx7411_read_msg_ctrl_status,
725 client, val, (val < 0) || (val == 0),
726 2000, 2000 * 150);
727 }
728
anx7411_send_msg(struct anx7411_data * ctx,u8 type,u8 * buf,u8 size)729 static int anx7411_send_msg(struct anx7411_data *ctx, u8 type, u8 *buf, u8 size)
730 {
731 struct device *dev = &ctx->spi_client->dev;
732 struct fw_msg *msg = &ctx->send_msg;
733 u8 crc;
734 int ret;
735
736 size = min_t(u8, size, (u8)MAX_BUF_LEN);
737 memcpy(msg->buf, buf, size);
738 msg->msg_type = type;
739 /* msg len equals buffer length + msg_type */
740 msg->msg_len = size + 1;
741
742 /* Do CRC check for all buffer data and msg_len and msg_type */
743 crc = checksum(dev, (u8 *)msg, size + HEADER_LEN);
744 msg->buf[size] = 0 - crc;
745
746 ret = anx7411_wait_msg_empty(ctx->spi_client);
747 if (ret)
748 return ret;
749
750 ret = anx7411_reg_block_write(ctx->spi_client,
751 CMD_SEND_BUF + 1, size + HEADER_LEN,
752 &msg->msg_type);
753 ret |= anx7411_reg_write(ctx->spi_client, CMD_SEND_BUF,
754 msg->msg_len);
755 return ret;
756 }
757
anx7411_process_cmd(struct anx7411_data * ctx)758 static int anx7411_process_cmd(struct anx7411_data *ctx)
759 {
760 struct device *dev = &ctx->spi_client->dev;
761 struct fw_msg *msg = &ctx->recv_msg;
762 u8 len;
763 u8 crc;
764 int ret;
765
766 /* Read message from firmware */
767 ret = anx7411_reg_block_read(ctx->spi_client, CMD_RECV_BUF,
768 MSG_LEN, (u8 *)msg);
769 if (ret < 0)
770 return 0;
771
772 if (!msg->msg_len)
773 return 0;
774
775 ret = anx7411_reg_write(ctx->spi_client, CMD_RECV_BUF, 0);
776 if (ret)
777 return ret;
778
779 len = msg->msg_len & MSG_LEN_MASK;
780 crc = checksum(dev, (u8 *)msg, len + HEADER_LEN);
781 if (crc) {
782 dev_err(dev, "message error crc(0x%.02x)\n", crc);
783 return -ERANGE;
784 }
785
786 return anx7411_parse_cmd(ctx, msg->msg_type, msg->buf, len - 1);
787 }
788
anx7411_translate_payload(struct device * dev,__le32 * payload,u32 * pdo,int nr,const char * type)789 static void anx7411_translate_payload(struct device *dev, __le32 *payload,
790 u32 *pdo, int nr, const char *type)
791 {
792 int i;
793
794 if (nr > PDO_MAX_OBJECTS) {
795 dev_err(dev, "nr(%d) exceed PDO_MAX_OBJECTS(%d)\n",
796 nr, PDO_MAX_OBJECTS);
797
798 return;
799 }
800
801 for (i = 0; i < nr; i++)
802 payload[i] = cpu_to_le32(pdo[i]);
803 }
804
anx7411_config(struct anx7411_data * ctx)805 static int anx7411_config(struct anx7411_data *ctx)
806 {
807 struct device *dev = &ctx->spi_client->dev;
808 struct typec_params *typecp = &ctx->typec;
809 __le32 payload[PDO_MAX_OBJECTS];
810 int ret;
811
812 /* Config PD FW work under PD 2.0 */
813 ret = anx7411_reg_write(ctx->spi_client, PD_REV_INIT, PD_REV20);
814 ret |= anx7411_reg_write(ctx->tcpc_client, FW_CTRL_0,
815 UNSTRUCT_VDM_EN | DELAY_200MS |
816 VSAFE1 | FRS_EN);
817 ret |= anx7411_reg_write(ctx->spi_client, FW_CTRL_1,
818 AUTO_PD_EN | FORCE_SEND_RDO);
819
820 /* Set VBUS current threshold */
821 ret |= anx7411_reg_write(ctx->tcpc_client, VBUS_THRESHOLD_H, 0xff);
822 ret |= anx7411_reg_write(ctx->tcpc_client, VBUS_THRESHOLD_L, 0x03);
823
824 /* Fix dongle compatible issue */
825 ret |= anx7411_reg_write(ctx->tcpc_client, FW_PARAM,
826 anx7411_reg_read(ctx->tcpc_client, FW_PARAM) |
827 DONGLE_IOP);
828 ret |= anx7411_reg_write(ctx->spi_client, INT_MASK, 0);
829
830 ret |= anx7411_reg_write(ctx->spi_client, PD_EXT_MSG_CTRL, 0xFF);
831 if (ret)
832 return ret;
833
834 if (typecp->caps_flags & HAS_SOURCE_CAP) {
835 anx7411_translate_payload(dev, payload, typecp->src_pdo,
836 typecp->src_pdo_nr, "source");
837 anx7411_send_msg(ctx, TYPE_SRC_CAP, (u8 *)&payload,
838 typecp->src_pdo_nr * 4);
839 anx7411_send_msg(ctx, TYPE_SNK_IDENTITY, snk_identity,
840 sizeof(snk_identity));
841 anx7411_send_msg(ctx, TYPE_SET_SNK_DP_CAP, dp_caps,
842 sizeof(dp_caps));
843 }
844
845 if (typecp->caps_flags & HAS_SINK_CAP) {
846 anx7411_translate_payload(dev, payload, typecp->sink_pdo,
847 typecp->sink_pdo_nr, "sink");
848 anx7411_send_msg(ctx, TYPE_SNK_CAP, (u8 *)&payload,
849 typecp->sink_pdo_nr * 4);
850 }
851
852 if (typecp->caps_flags & HAS_SINK_WATT) {
853 if (typecp->sink_watt) {
854 ret |= anx7411_reg_write(ctx->spi_client, MAX_POWER,
855 typecp->sink_watt);
856 /* Set min power to 1W */
857 ret |= anx7411_reg_write(ctx->spi_client, MIN_POWER, 2);
858 }
859
860 if (typecp->sink_voltage)
861 ret |= anx7411_reg_write(ctx->spi_client, MAX_VOLTAGE,
862 typecp->sink_voltage);
863 if (ret)
864 return ret;
865 }
866
867 if (!typecp->caps_flags)
868 usleep_range(5000, 6000);
869
870 ctx->fw_version = anx7411_reg_read(ctx->spi_client, FW_VER);
871 ctx->fw_subversion = anx7411_reg_read(ctx->spi_client, FW_SUBVER);
872
873 return 0;
874 }
875
anx7411_chip_standby(struct anx7411_data * ctx)876 static void anx7411_chip_standby(struct anx7411_data *ctx)
877 {
878 int ret;
879 u8 cc1, cc2;
880 struct device *dev = &ctx->spi_client->dev;
881
882 ret = anx7411_reg_write(ctx->spi_client, OCM_CTRL_0,
883 anx7411_reg_read(ctx->spi_client, OCM_CTRL_0) |
884 OCM_RESET);
885 ret |= anx7411_reg_write(ctx->tcpc_client, ANALOG_CTRL_10, 0x80);
886 /* Set TCPC to RD and DRP enable */
887 cc1 = TCPC_ROLE_CTRL_CC_RD << TCPC_ROLE_CTRL_CC1_SHIFT;
888 cc2 = TCPC_ROLE_CTRL_CC_RD << TCPC_ROLE_CTRL_CC2_SHIFT;
889 ret |= anx7411_reg_write(ctx->tcpc_client, TCPC_ROLE_CTRL,
890 TCPC_ROLE_CTRL_DRP | cc1 | cc2);
891
892 /* Send DRP toggle command */
893 ret |= anx7411_reg_write(ctx->tcpc_client, TCPC_COMMAND,
894 TCPC_CMD_LOOK4CONNECTION);
895
896 /* Send TCPC enter standby command */
897 ret |= anx7411_reg_write(ctx->tcpc_client,
898 TCPC_COMMAND, TCPC_CMD_I2C_IDLE);
899 if (ret)
900 dev_err(dev, "Chip standby failed\n");
901 }
902
anx7411_work_func(struct work_struct * work)903 static void anx7411_work_func(struct work_struct *work)
904 {
905 int ret;
906 u8 buf[STATUS_LEN];
907 u8 int_change; /* Interrupt change */
908 u8 int_status; /* Firmware status update */
909 u8 alert0, alert1; /* Interrupt alert source */
910 struct anx7411_data *ctx = container_of(work, struct anx7411_data, work);
911 struct device *dev = &ctx->spi_client->dev;
912
913 mutex_lock(&ctx->lock);
914
915 /* Read interrupt change status */
916 ret = anx7411_reg_block_read(ctx->spi_client, INT_STS, STATUS_LEN, buf);
917 if (ret < 0) {
918 /* Power standby mode, just return */
919 goto unlock;
920 }
921 int_change = buf[0];
922 int_status = buf[1];
923
924 /* Read alert register */
925 ret = anx7411_reg_block_read(ctx->tcpc_client, ALERT_0, STATUS_LEN, buf);
926 if (ret < 0)
927 goto unlock;
928
929 alert0 = buf[0];
930 alert1 = buf[1];
931
932 /* Clear interrupt and alert status */
933 ret = anx7411_reg_write(ctx->spi_client, INT_STS, 0);
934 ret |= anx7411_reg_write(ctx->tcpc_client, ALERT_0, alert0);
935 ret |= anx7411_reg_write(ctx->tcpc_client, ALERT_1, alert1);
936 if (ret)
937 goto unlock;
938
939 if (alert1 & INTP_POW_OFF) {
940 anx7411_partner_unregister_altmode(ctx);
941 if (anx7411_set_usb_role(ctx, USB_ROLE_NONE))
942 dev_err(dev, "Set usb role\n");
943 anx7411_unregister_partner(ctx);
944 ctx->psy_online = ANX7411_PSY_OFFLINE;
945 ctx->usb_type = POWER_SUPPLY_USB_TYPE_C;
946 ctx->typec.request_voltage = 0;
947 ctx->typec.request_current = 0;
948 power_supply_changed(ctx->psy);
949 anx7411_chip_standby(ctx);
950 goto unlock;
951 }
952
953 if ((alert0 & SOFTWARE_INT) && (int_change & OCM_BOOT_UP)) {
954 if (anx7411_config(ctx))
955 dev_err(dev, "Config failed\n");
956 if (anx7411_data_role_detect(ctx))
957 dev_err(dev, "set PD data role\n");
958 if (anx7411_power_role_detect(ctx))
959 dev_err(dev, "set PD power role\n");
960 anx7411_set_mux(ctx, SELECT_PIN_ASSIGMENT_C);
961 }
962
963 if (alert0 & RECEIVED_MSG)
964 anx7411_process_cmd(ctx);
965
966 ret = (int_status & DATA_ROLE) ? TYPEC_HOST : TYPEC_DEVICE;
967 if (ctx->typec.data_role != ret)
968 if (anx7411_data_role_detect(ctx))
969 dev_err(dev, "set PD data role\n");
970
971 ret = (int_status & SINK_STATUS) ? TYPEC_SINK : TYPEC_SOURCE;
972 if (ctx->typec.power_role != ret)
973 if (anx7411_power_role_detect(ctx))
974 dev_err(dev, "set PD power role\n");
975
976 if ((alert0 & SOFTWARE_INT) && (int_change & CC_STATUS_CHANGE))
977 anx7411_cc_status_detect(ctx);
978
979 unlock:
980 mutex_unlock(&ctx->lock);
981 }
982
anx7411_intr_isr(int irq,void * data)983 static irqreturn_t anx7411_intr_isr(int irq, void *data)
984 {
985 struct anx7411_data *ctx = (struct anx7411_data *)data;
986
987 queue_work(ctx->workqueue, &ctx->work);
988
989 return IRQ_HANDLED;
990 }
991
anx7411_register_i2c_dummy_clients(struct anx7411_data * ctx,struct i2c_client * client)992 static int anx7411_register_i2c_dummy_clients(struct anx7411_data *ctx,
993 struct i2c_client *client)
994 {
995 int i;
996 u8 spi_addr;
997
998 for (i = 0; i < ARRAY_SIZE(anx7411_i2c_addr); i++) {
999 if (client->addr == (anx7411_i2c_addr[i].tcpc_address >> 1)) {
1000 spi_addr = anx7411_i2c_addr[i].spi_address >> 1;
1001 ctx->spi_client = i2c_new_dummy_device(client->adapter,
1002 spi_addr);
1003 if (!IS_ERR(ctx->spi_client))
1004 return 0;
1005 }
1006 }
1007
1008 dev_err(&client->dev, "unable to get SPI slave\n");
1009 return -ENOMEM;
1010 }
1011
anx7411_port_unregister_altmodes(struct typec_altmode ** adev)1012 static void anx7411_port_unregister_altmodes(struct typec_altmode **adev)
1013 {
1014 int i;
1015
1016 for (i = 0; i < MAX_ALTMODE; i++)
1017 if (adev[i]) {
1018 typec_unregister_altmode(adev[i]);
1019 adev[i] = NULL;
1020 }
1021 }
1022
anx7411_usb_mux_set(struct typec_mux_dev * mux,struct typec_mux_state * state)1023 static int anx7411_usb_mux_set(struct typec_mux_dev *mux,
1024 struct typec_mux_state *state)
1025 {
1026 struct anx7411_data *ctx = typec_mux_get_drvdata(mux);
1027 struct device *dev = &ctx->spi_client->dev;
1028 int has_dp;
1029
1030 has_dp = (state->alt && state->alt->svid == USB_TYPEC_DP_SID &&
1031 state->alt->mode == USB_TYPEC_DP_MODE);
1032 if (!has_dp)
1033 dev_err(dev, "dp altmode not register\n");
1034
1035 return 0;
1036 }
1037
anx7411_usb_set_orientation(struct typec_switch_dev * sw,enum typec_orientation orientation)1038 static int anx7411_usb_set_orientation(struct typec_switch_dev *sw,
1039 enum typec_orientation orientation)
1040 {
1041 /* No need set */
1042
1043 return 0;
1044 }
1045
anx7411_register_switch(struct anx7411_data * ctx,struct device * dev,struct fwnode_handle * fwnode)1046 static int anx7411_register_switch(struct anx7411_data *ctx,
1047 struct device *dev,
1048 struct fwnode_handle *fwnode)
1049 {
1050 struct typec_switch_desc sw_desc = { };
1051
1052 sw_desc.fwnode = fwnode;
1053 sw_desc.drvdata = ctx;
1054 sw_desc.name = fwnode_get_name(fwnode);
1055 sw_desc.set = anx7411_usb_set_orientation;
1056
1057 ctx->typec.typec_switch = typec_switch_register(dev, &sw_desc);
1058 if (IS_ERR(ctx->typec.typec_switch)) {
1059 dev_err(dev, "switch register failed\n");
1060 return PTR_ERR(ctx->typec.typec_switch);
1061 }
1062
1063 return 0;
1064 }
1065
anx7411_register_mux(struct anx7411_data * ctx,struct device * dev,struct fwnode_handle * fwnode)1066 static int anx7411_register_mux(struct anx7411_data *ctx,
1067 struct device *dev,
1068 struct fwnode_handle *fwnode)
1069 {
1070 struct typec_mux_desc mux_desc = { };
1071
1072 mux_desc.fwnode = fwnode;
1073 mux_desc.drvdata = ctx;
1074 mux_desc.name = fwnode_get_name(fwnode);
1075 mux_desc.set = anx7411_usb_mux_set;
1076
1077 ctx->typec.typec_mux = typec_mux_register(dev, &mux_desc);
1078 if (IS_ERR(ctx->typec.typec_mux)) {
1079 dev_err(dev, "mux register failed\n");
1080 return PTR_ERR(ctx->typec.typec_mux);
1081 }
1082
1083 return 0;
1084 }
1085
anx7411_unregister_mux(struct anx7411_data * ctx)1086 static void anx7411_unregister_mux(struct anx7411_data *ctx)
1087 {
1088 if (ctx->typec.typec_mux) {
1089 typec_mux_unregister(ctx->typec.typec_mux);
1090 ctx->typec.typec_mux = NULL;
1091 }
1092 }
1093
anx7411_unregister_switch(struct anx7411_data * ctx)1094 static void anx7411_unregister_switch(struct anx7411_data *ctx)
1095 {
1096 if (ctx->typec.typec_switch) {
1097 typec_switch_unregister(ctx->typec.typec_switch);
1098 ctx->typec.typec_switch = NULL;
1099 }
1100 }
1101
anx7411_typec_switch_probe(struct anx7411_data * ctx,struct device * dev)1102 static int anx7411_typec_switch_probe(struct anx7411_data *ctx,
1103 struct device *dev)
1104 {
1105 int ret;
1106 struct device_node *node;
1107
1108 node = of_get_child_by_name(dev->of_node, "orientation_switch");
1109 if (!node)
1110 return 0;
1111
1112 ret = anx7411_register_switch(ctx, dev, &node->fwnode);
1113 if (ret) {
1114 dev_err(dev, "failed register switch");
1115 return ret;
1116 }
1117
1118 node = of_get_child_by_name(dev->of_node, "mode_switch");
1119 if (!node) {
1120 dev_err(dev, "no typec mux exist");
1121 ret = -ENODEV;
1122 goto unregister_switch;
1123 }
1124
1125 ret = anx7411_register_mux(ctx, dev, &node->fwnode);
1126 if (ret) {
1127 dev_err(dev, "failed register mode switch");
1128 ret = -ENODEV;
1129 goto unregister_switch;
1130 }
1131
1132 return 0;
1133
1134 unregister_switch:
1135 anx7411_unregister_switch(ctx);
1136
1137 return ret;
1138 }
1139
anx7411_typec_port_probe(struct anx7411_data * ctx,struct device * dev)1140 static int anx7411_typec_port_probe(struct anx7411_data *ctx,
1141 struct device *dev)
1142 {
1143 struct typec_capability *cap = &ctx->typec.caps;
1144 struct typec_params *typecp = &ctx->typec;
1145 struct fwnode_handle *fwnode;
1146 const char *buf;
1147 int ret, i;
1148
1149 fwnode = device_get_named_child_node(dev, "connector");
1150 if (!fwnode)
1151 return -EINVAL;
1152
1153 ret = fwnode_property_read_string(fwnode, "power-role", &buf);
1154 if (ret) {
1155 dev_err(dev, "power-role not found: %d\n", ret);
1156 return ret;
1157 }
1158
1159 ret = typec_find_port_power_role(buf);
1160 if (ret < 0)
1161 return ret;
1162 cap->type = ret;
1163
1164 ret = fwnode_property_read_string(fwnode, "data-role", &buf);
1165 if (ret) {
1166 dev_err(dev, "data-role not found: %d\n", ret);
1167 return ret;
1168 }
1169
1170 ret = typec_find_port_data_role(buf);
1171 if (ret < 0)
1172 return ret;
1173 cap->data = ret;
1174
1175 ret = fwnode_property_read_string(fwnode, "try-power-role", &buf);
1176 if (ret) {
1177 dev_err(dev, "try-power-role not found: %d\n", ret);
1178 return ret;
1179 }
1180
1181 ret = typec_find_power_role(buf);
1182 if (ret < 0)
1183 return ret;
1184 cap->prefer_role = ret;
1185
1186 /* Get source pdos */
1187 ret = fwnode_property_count_u32(fwnode, "source-pdos");
1188 if (ret > 0) {
1189 typecp->src_pdo_nr = min_t(u8, ret, PDO_MAX_OBJECTS);
1190 ret = fwnode_property_read_u32_array(fwnode, "source-pdos",
1191 typecp->src_pdo,
1192 typecp->src_pdo_nr);
1193 if (ret < 0) {
1194 dev_err(dev, "source cap validate failed: %d\n", ret);
1195 return -EINVAL;
1196 }
1197
1198 typecp->caps_flags |= HAS_SOURCE_CAP;
1199 }
1200
1201 ret = fwnode_property_count_u32(fwnode, "sink-pdos");
1202 if (ret > 0) {
1203 typecp->sink_pdo_nr = min_t(u8, ret, PDO_MAX_OBJECTS);
1204 ret = fwnode_property_read_u32_array(fwnode, "sink-pdos",
1205 typecp->sink_pdo,
1206 typecp->sink_pdo_nr);
1207 if (ret < 0) {
1208 dev_err(dev, "sink cap validate failed: %d\n", ret);
1209 return -EINVAL;
1210 }
1211
1212 for (i = 0; i < typecp->sink_pdo_nr; i++) {
1213 ret = 0;
1214 switch (pdo_type(typecp->sink_pdo[i])) {
1215 case PDO_TYPE_FIXED:
1216 ret = pdo_fixed_voltage(typecp->sink_pdo[i]);
1217 break;
1218 case PDO_TYPE_BATT:
1219 case PDO_TYPE_VAR:
1220 ret = pdo_max_voltage(typecp->sink_pdo[i]);
1221 break;
1222 case PDO_TYPE_APDO:
1223 default:
1224 ret = 0;
1225 break;
1226 }
1227
1228 /* 100mv per unit */
1229 typecp->sink_voltage = max(5000, ret) / 100;
1230 }
1231
1232 typecp->caps_flags |= HAS_SINK_CAP;
1233 }
1234
1235 if (!fwnode_property_read_u32(fwnode, "op-sink-microwatt", &ret)) {
1236 typecp->sink_watt = ret / 500000; /* 500mw per unit */
1237 typecp->caps_flags |= HAS_SINK_WATT;
1238 }
1239
1240 cap->fwnode = fwnode;
1241
1242 ctx->typec.role_sw = usb_role_switch_get(dev);
1243 if (IS_ERR(ctx->typec.role_sw)) {
1244 dev_err(dev, "USB role switch not found.\n");
1245 ctx->typec.role_sw = NULL;
1246 }
1247
1248 ctx->typec.port = typec_register_port(dev, cap);
1249 if (IS_ERR(ctx->typec.port)) {
1250 ret = PTR_ERR(ctx->typec.port);
1251 ctx->typec.port = NULL;
1252 dev_err(dev, "Failed to register type c port %d\n", ret);
1253 return ret;
1254 }
1255
1256 typec_port_register_altmodes(ctx->typec.port, NULL, ctx,
1257 ctx->typec.port_amode,
1258 MAX_ALTMODE);
1259 return 0;
1260 }
1261
anx7411_typec_check_connection(struct anx7411_data * ctx)1262 static int anx7411_typec_check_connection(struct anx7411_data *ctx)
1263 {
1264 int ret;
1265
1266 ret = anx7411_reg_read(ctx->spi_client, FW_VER);
1267 if (ret < 0)
1268 return 0; /* No device attached in typec port */
1269
1270 /* Clear interrupt and alert status */
1271 ret = anx7411_reg_write(ctx->spi_client, INT_STS, 0);
1272 ret |= anx7411_reg_write(ctx->tcpc_client, ALERT_0, 0xFF);
1273 ret |= anx7411_reg_write(ctx->tcpc_client, ALERT_1, 0xFF);
1274 if (ret)
1275 return ret;
1276
1277 ret = anx7411_cc_status_detect(ctx);
1278 ret |= anx7411_power_role_detect(ctx);
1279 ret |= anx7411_data_role_detect(ctx);
1280 ret |= anx7411_set_mux(ctx, SELECT_PIN_ASSIGMENT_C);
1281 if (ret)
1282 return ret;
1283
1284 ret = anx7411_send_msg(ctx, TYPE_GET_DP_ALT_ENTER, NULL, 0);
1285 ret |= anx7411_send_msg(ctx, TYPE_GET_DP_DISCOVER_MODES_INFO, NULL, 0);
1286
1287 return ret;
1288 }
1289
anx7411_runtime_pm_suspend(struct device * dev)1290 static int __maybe_unused anx7411_runtime_pm_suspend(struct device *dev)
1291 {
1292 struct anx7411_data *ctx = dev_get_drvdata(dev);
1293
1294 mutex_lock(&ctx->lock);
1295
1296 anx7411_partner_unregister_altmode(ctx);
1297
1298 if (ctx->typec.partner)
1299 anx7411_unregister_partner(ctx);
1300
1301 mutex_unlock(&ctx->lock);
1302
1303 return 0;
1304 }
1305
anx7411_runtime_pm_resume(struct device * dev)1306 static int __maybe_unused anx7411_runtime_pm_resume(struct device *dev)
1307 {
1308 struct anx7411_data *ctx = dev_get_drvdata(dev);
1309
1310 mutex_lock(&ctx->lock);
1311 /* Detect PD connection */
1312 if (anx7411_typec_check_connection(ctx))
1313 dev_err(dev, "check connection");
1314
1315 mutex_unlock(&ctx->lock);
1316
1317 return 0;
1318 }
1319
1320 static const struct dev_pm_ops anx7411_pm_ops = {
1321 SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
1322 pm_runtime_force_resume)
1323 SET_RUNTIME_PM_OPS(anx7411_runtime_pm_suspend,
1324 anx7411_runtime_pm_resume, NULL)
1325 };
1326
anx7411_get_gpio_irq(struct anx7411_data * ctx)1327 static void anx7411_get_gpio_irq(struct anx7411_data *ctx)
1328 {
1329 struct device *dev = &ctx->tcpc_client->dev;
1330
1331 ctx->intp_gpiod = devm_gpiod_get_optional(dev, "interrupt", GPIOD_IN);
1332 if (IS_ERR_OR_NULL(ctx->intp_gpiod)) {
1333 dev_err(dev, "no interrupt gpio property\n");
1334 return;
1335 }
1336
1337 ctx->intp_irq = gpiod_to_irq(ctx->intp_gpiod);
1338 if (ctx->intp_irq < 0)
1339 dev_err(dev, "failed to get GPIO IRQ\n");
1340 }
1341
1342 static enum power_supply_usb_type anx7411_psy_usb_types[] = {
1343 POWER_SUPPLY_USB_TYPE_C,
1344 POWER_SUPPLY_USB_TYPE_PD,
1345 POWER_SUPPLY_USB_TYPE_PD_PPS,
1346 };
1347
1348 static enum power_supply_property anx7411_psy_props[] = {
1349 POWER_SUPPLY_PROP_USB_TYPE,
1350 POWER_SUPPLY_PROP_ONLINE,
1351 POWER_SUPPLY_PROP_VOLTAGE_MIN,
1352 POWER_SUPPLY_PROP_VOLTAGE_MAX,
1353 POWER_SUPPLY_PROP_VOLTAGE_NOW,
1354 POWER_SUPPLY_PROP_CURRENT_MAX,
1355 POWER_SUPPLY_PROP_CURRENT_NOW,
1356 };
1357
anx7411_psy_set_prop(struct power_supply * psy,enum power_supply_property psp,const union power_supply_propval * val)1358 static int anx7411_psy_set_prop(struct power_supply *psy,
1359 enum power_supply_property psp,
1360 const union power_supply_propval *val)
1361 {
1362 struct anx7411_data *ctx = power_supply_get_drvdata(psy);
1363 int ret = 0;
1364
1365 if (psp == POWER_SUPPLY_PROP_ONLINE)
1366 ctx->psy_online = val->intval;
1367 else
1368 ret = -EINVAL;
1369
1370 power_supply_changed(ctx->psy);
1371 return ret;
1372 }
1373
anx7411_psy_prop_writeable(struct power_supply * psy,enum power_supply_property psp)1374 static int anx7411_psy_prop_writeable(struct power_supply *psy,
1375 enum power_supply_property psp)
1376 {
1377 return psp == POWER_SUPPLY_PROP_ONLINE;
1378 }
1379
anx7411_psy_get_prop(struct power_supply * psy,enum power_supply_property psp,union power_supply_propval * val)1380 static int anx7411_psy_get_prop(struct power_supply *psy,
1381 enum power_supply_property psp,
1382 union power_supply_propval *val)
1383 {
1384 struct anx7411_data *ctx = power_supply_get_drvdata(psy);
1385 int ret = 0;
1386
1387 switch (psp) {
1388 case POWER_SUPPLY_PROP_USB_TYPE:
1389 val->intval = ctx->usb_type;
1390 break;
1391 case POWER_SUPPLY_PROP_ONLINE:
1392 val->intval = ctx->psy_online;
1393 break;
1394 case POWER_SUPPLY_PROP_VOLTAGE_NOW:
1395 case POWER_SUPPLY_PROP_VOLTAGE_MIN:
1396 case POWER_SUPPLY_PROP_VOLTAGE_MAX:
1397 val->intval = (ctx->psy_online) ?
1398 ctx->typec.request_voltage * 1000 : 0;
1399 break;
1400 case POWER_SUPPLY_PROP_CURRENT_NOW:
1401 case POWER_SUPPLY_PROP_CURRENT_MAX:
1402 val->intval = (ctx->psy_online) ?
1403 ctx->typec.request_current * 1000 : 0;
1404 break;
1405 default:
1406 ret = -EINVAL;
1407 break;
1408 }
1409 return ret;
1410 }
1411
anx7411_psy_register(struct anx7411_data * ctx)1412 static int anx7411_psy_register(struct anx7411_data *ctx)
1413 {
1414 struct power_supply_desc *psy_desc = &ctx->psy_desc;
1415 struct power_supply_config psy_cfg = {};
1416 char *psy_name;
1417
1418 psy_name = devm_kasprintf(ctx->dev, GFP_KERNEL, "anx7411-source-psy-%s",
1419 dev_name(ctx->dev));
1420 if (!psy_name)
1421 return -ENOMEM;
1422
1423 psy_desc->name = psy_name;
1424 psy_desc->type = POWER_SUPPLY_TYPE_USB;
1425 psy_desc->usb_types = anx7411_psy_usb_types;
1426 psy_desc->num_usb_types = ARRAY_SIZE(anx7411_psy_usb_types);
1427 psy_desc->properties = anx7411_psy_props;
1428 psy_desc->num_properties = ARRAY_SIZE(anx7411_psy_props);
1429
1430 psy_desc->get_property = anx7411_psy_get_prop;
1431 psy_desc->set_property = anx7411_psy_set_prop;
1432 psy_desc->property_is_writeable = anx7411_psy_prop_writeable;
1433
1434 ctx->usb_type = POWER_SUPPLY_USB_TYPE_C;
1435 ctx->psy = devm_power_supply_register(ctx->dev, psy_desc, &psy_cfg);
1436
1437 if (IS_ERR(ctx->psy))
1438 dev_warn(ctx->dev, "unable to register psy\n");
1439
1440 return PTR_ERR_OR_ZERO(ctx->psy);
1441 }
1442
anx7411_i2c_probe(struct i2c_client * client)1443 static int anx7411_i2c_probe(struct i2c_client *client)
1444 {
1445 struct anx7411_data *plat;
1446 struct device *dev = &client->dev;
1447 int ret;
1448
1449 if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_I2C_BLOCK))
1450 return -ENODEV;
1451
1452 plat = devm_kzalloc(dev, sizeof(*plat), GFP_KERNEL);
1453 if (!plat)
1454 return -ENOMEM;
1455
1456 plat->tcpc_client = client;
1457 i2c_set_clientdata(client, plat);
1458
1459 mutex_init(&plat->lock);
1460
1461 ret = anx7411_register_i2c_dummy_clients(plat, client);
1462 if (ret) {
1463 dev_err(dev, "fail to reserve I2C bus\n");
1464 return ret;
1465 }
1466
1467 ret = anx7411_typec_switch_probe(plat, dev);
1468 if (ret) {
1469 dev_err(dev, "fail to probe typec switch\n");
1470 goto free_i2c_dummy;
1471 }
1472
1473 ret = anx7411_typec_port_probe(plat, dev);
1474 if (ret) {
1475 dev_err(dev, "fail to probe typec property.\n");
1476 ret = -ENODEV;
1477 goto free_typec_switch;
1478 }
1479
1480 plat->intp_irq = client->irq;
1481 if (!client->irq)
1482 anx7411_get_gpio_irq(plat);
1483
1484 if (!plat->intp_irq) {
1485 dev_err(dev, "fail to get interrupt IRQ\n");
1486 ret = -EINVAL;
1487 goto free_typec_port;
1488 }
1489
1490 plat->dev = dev;
1491 plat->psy_online = ANX7411_PSY_OFFLINE;
1492 ret = anx7411_psy_register(plat);
1493 if (ret) {
1494 dev_err(dev, "register psy\n");
1495 goto free_typec_port;
1496 }
1497
1498 INIT_WORK(&plat->work, anx7411_work_func);
1499 plat->workqueue = alloc_workqueue("anx7411_work",
1500 WQ_FREEZABLE |
1501 WQ_MEM_RECLAIM,
1502 1);
1503 if (!plat->workqueue) {
1504 dev_err(dev, "fail to create work queue\n");
1505 ret = -ENOMEM;
1506 goto free_typec_port;
1507 }
1508
1509 ret = devm_request_threaded_irq(dev, plat->intp_irq,
1510 NULL, anx7411_intr_isr,
1511 IRQF_TRIGGER_FALLING |
1512 IRQF_ONESHOT,
1513 "anx7411-intp", plat);
1514 if (ret) {
1515 dev_err(dev, "fail to request irq\n");
1516 goto free_wq;
1517 }
1518
1519 if (anx7411_typec_check_connection(plat))
1520 dev_err(dev, "check status\n");
1521
1522 pm_runtime_enable(dev);
1523
1524 return 0;
1525
1526 free_wq:
1527 destroy_workqueue(plat->workqueue);
1528
1529 free_typec_port:
1530 typec_unregister_port(plat->typec.port);
1531 anx7411_port_unregister_altmodes(plat->typec.port_amode);
1532
1533 free_typec_switch:
1534 anx7411_unregister_switch(plat);
1535 anx7411_unregister_mux(plat);
1536
1537 free_i2c_dummy:
1538 i2c_unregister_device(plat->spi_client);
1539
1540 return ret;
1541 }
1542
anx7411_i2c_remove(struct i2c_client * client)1543 static void anx7411_i2c_remove(struct i2c_client *client)
1544 {
1545 struct anx7411_data *plat = i2c_get_clientdata(client);
1546
1547 anx7411_partner_unregister_altmode(plat);
1548 anx7411_unregister_partner(plat);
1549
1550 if (plat->workqueue)
1551 destroy_workqueue(plat->workqueue);
1552
1553 if (plat->spi_client)
1554 i2c_unregister_device(plat->spi_client);
1555
1556 if (plat->typec.role_sw)
1557 usb_role_switch_put(plat->typec.role_sw);
1558
1559 anx7411_unregister_mux(plat);
1560
1561 anx7411_unregister_switch(plat);
1562
1563 if (plat->typec.port)
1564 typec_unregister_port(plat->typec.port);
1565
1566 anx7411_port_unregister_altmodes(plat->typec.port_amode);
1567 }
1568
1569 static const struct i2c_device_id anx7411_id[] = {
1570 {"anx7411", 0},
1571 {}
1572 };
1573
1574 MODULE_DEVICE_TABLE(i2c, anx7411_id);
1575
1576 static const struct of_device_id anx_match_table[] = {
1577 {.compatible = "analogix,anx7411",},
1578 {},
1579 };
1580
1581 static struct i2c_driver anx7411_driver = {
1582 .driver = {
1583 .name = "anx7411",
1584 .of_match_table = anx_match_table,
1585 .pm = &anx7411_pm_ops,
1586 },
1587 .probe = anx7411_i2c_probe,
1588 .remove = anx7411_i2c_remove,
1589
1590 .id_table = anx7411_id,
1591 };
1592
1593 module_i2c_driver(anx7411_driver);
1594
1595 MODULE_DESCRIPTION("Anx7411 USB Type-C PD driver");
1596 MODULE_AUTHOR("Xin Ji <xji@analogixsemi.com>");
1597 MODULE_LICENSE("GPL");
1598 MODULE_VERSION("0.1.5");
1599
