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/bitfield.h>
10 #include <linux/gpio/consumer.h>
11 #include <linux/i2c.h>
12 #include <linux/interrupt.h>
13 #include <linux/iopoll.h>
14 #include <linux/kernel.h>
15 #include <linux/module.h>
16 #include <linux/mutex.h>
17 #include <linux/of_graph.h>
18 #include <linux/of_platform.h>
19 #include <linux/pm_runtime.h>
20 #include <linux/regulator/consumer.h>
21 #include <linux/slab.h>
22 #include <linux/types.h>
23 #include <linux/usb/pd.h>
24 #include <linux/usb/role.h>
25 #include <linux/usb/tcpci.h>
26 #include <linux/usb/typec.h>
27 #include <linux/usb/typec_dp.h>
28 #include <linux/usb/typec_mux.h>
29 #include <linux/workqueue.h>
30 #include <linux/power_supply.h>
31
32 #define TCPC_ADDRESS1 0x58
33 #define TCPC_ADDRESS2 0x56
34 #define TCPC_ADDRESS3 0x54
35 #define TCPC_ADDRESS4 0x52
36 #define SPI_ADDRESS1 0x7e
37 #define SPI_ADDRESS2 0x6e
38 #define SPI_ADDRESS3 0x64
39 #define SPI_ADDRESS4 0x62
40
41 struct anx7411_i2c_select {
42 u8 tcpc_address;
43 u8 spi_address;
44 };
45
46 #define VID_ANALOGIX 0x1F29
47 #define PID_ANALOGIX 0x7411
48
49 /* TCPC register define */
50
51 #define ANALOG_CTRL_10 0xAA
52
53 #define STATUS_LEN 2
54 #define ALERT_0 0xCB
55 #define RECEIVED_MSG BIT(7)
56 #define SOFTWARE_INT BIT(6)
57 #define MSG_LEN 32
58 #define HEADER_LEN 2
59 #define MSG_HEADER 0x00
60 #define MSG_TYPE 0x01
61 #define MSG_RAWDATA 0x02
62 #define MSG_LEN_MASK 0x1F
63
64 #define ALERT_1 0xCC
65 #define INTP_POW_ON BIT(7)
66 #define INTP_POW_OFF BIT(6)
67
68 #define VBUS_THRESHOLD_H 0xDD
69 #define VBUS_THRESHOLD_L 0xDE
70
71 #define FW_CTRL_0 0xF0
72 #define UNSTRUCT_VDM_EN BIT(0)
73 #define DELAY_200MS BIT(1)
74 #define VSAFE0 0
75 #define VSAFE1 BIT(2)
76 #define VSAFE2 BIT(3)
77 #define VSAFE3 (BIT(2) | BIT(3))
78 #define FRS_EN BIT(7)
79
80 #define FW_PARAM 0xF1
81 #define DONGLE_IOP BIT(0)
82
83 #define FW_CTRL_2 0xF7
84 #define SINK_CTRL_DIS_FLAG BIT(5)
85
86 /* SPI register define */
87 #define OCM_CTRL_0 0x6E
88 #define OCM_RESET BIT(6)
89
90 #define MAX_VOLTAGE 0xAC
91 #define MAX_POWER 0xAD
92 #define MIN_POWER 0xAE
93
94 #define REQUEST_VOLTAGE 0xAF
95 #define VOLTAGE_UNIT 100 /* mV per unit */
96
97 #define REQUEST_CURRENT 0xB1
98 #define CURRENT_UNIT 50 /* mA per unit */
99
100 #define CMD_SEND_BUF 0xC0
101 #define CMD_RECV_BUF 0xE0
102
103 #define REQ_VOL_20V_IN_100MV 0xC8
104 #define REQ_CUR_2_25A_IN_50MA 0x2D
105 #define REQ_CUR_3_25A_IN_50MA 0x41
106
107 #define DEF_5V 5000
108 #define DEF_1_5A 1500
109
110 #define LOBYTE(w) ((u8)((w) & 0xFF))
111 #define HIBYTE(w) ((u8)(((u16)(w) >> 8) & 0xFF))
112
113 enum anx7411_typec_message_type {
114 TYPE_SRC_CAP = 0x00,
115 TYPE_SNK_CAP = 0x01,
116 TYPE_SNK_IDENTITY = 0x02,
117 TYPE_SVID = 0x03,
118 TYPE_SET_SNK_DP_CAP = 0x08,
119 TYPE_PSWAP_REQ = 0x10,
120 TYPE_DSWAP_REQ = 0x11,
121 TYPE_VDM = 0x14,
122 TYPE_OBJ_REQ = 0x16,
123 TYPE_DP_ALT_ENTER = 0x19,
124 TYPE_DP_DISCOVER_MODES_INFO = 0x27,
125 TYPE_GET_DP_CONFIG = 0x29,
126 TYPE_DP_CONFIGURE = 0x2A,
127 TYPE_GET_DP_DISCOVER_MODES_INFO = 0x2E,
128 TYPE_GET_DP_ALT_ENTER = 0x2F,
129 };
130
131 #define FW_CTRL_1 0xB2
132 #define AUTO_PD_EN BIT(1)
133 #define TRYSRC_EN BIT(2)
134 #define TRYSNK_EN BIT(3)
135 #define FORCE_SEND_RDO BIT(6)
136
137 #define FW_VER 0xB4
138 #define FW_SUBVER 0xB5
139
140 #define INT_MASK 0xB6
141 #define INT_STS 0xB7
142 #define OCM_BOOT_UP BIT(0)
143 #define OC_OV_EVENT BIT(1)
144 #define VCONN_CHANGE BIT(2)
145 #define VBUS_CHANGE BIT(3)
146 #define CC_STATUS_CHANGE BIT(4)
147 #define DATA_ROLE_CHANGE BIT(5)
148 #define PR_CONSUMER_GOT_POWER BIT(6)
149 #define HPD_STATUS_CHANGE BIT(7)
150
151 #define SYSTEM_STSTUS 0xB8
152 /* 0: SINK off; 1: SINK on */
153 #define SINK_STATUS BIT(1)
154 /* 0: VCONN off; 1: VCONN on*/
155 #define VCONN_STATUS BIT(2)
156 /* 0: vbus off; 1: vbus on*/
157 #define VBUS_STATUS BIT(3)
158 /* 1: host; 0:device*/
159 #define DATA_ROLE BIT(5)
160 /* 0: Chunking; 1: Unchunked*/
161 #define SUPPORT_UNCHUNKING BIT(6)
162 /* 0: HPD low; 1: HPD high*/
163 #define HPD_STATUS BIT(7)
164
165 #define DATA_DFP 1
166 #define DATA_UFP 2
167 #define POWER_SOURCE 1
168 #define POWER_SINK 2
169
170 #define CC_STATUS 0xB9
171 #define CC1_RD BIT(0)
172 #define CC2_RD BIT(4)
173 #define CC1_RA BIT(1)
174 #define CC2_RA BIT(5)
175 #define CC1_RD BIT(0)
176 #define CC1_RP(cc) (((cc) >> 2) & 0x03)
177 #define CC2_RP(cc) (((cc) >> 6) & 0x03)
178
179 #define PD_REV_INIT 0xBA
180
181 #define PD_EXT_MSG_CTRL 0xBB
182 #define SRC_CAP_EXT_REPLY BIT(0)
183 #define MANUFACTURER_INFO_REPLY BIT(1)
184 #define BATTERY_STS_REPLY BIT(2)
185 #define BATTERY_CAP_REPLY BIT(3)
186 #define ALERT_REPLY BIT(4)
187 #define STATUS_REPLY BIT(5)
188 #define PPS_STATUS_REPLY BIT(6)
189 #define SNK_CAP_EXT_REPLY BIT(7)
190
191 #define NO_CONNECT 0x00
192 #define USB3_1_CONNECTED 0x01
193 #define DP_ALT_4LANES 0x02
194 #define USB3_1_DP_2LANES 0x03
195 #define CC1_CONNECTED 0x01
196 #define CC2_CONNECTED 0x02
197 #define SELECT_PIN_ASSIGMENT_C 0x04
198 #define SELECT_PIN_ASSIGMENT_D 0x08
199 #define SELECT_PIN_ASSIGMENT_E 0x10
200 #define SELECT_PIN_ASSIGMENT_U 0x00
201 #define REDRIVER_ADDRESS 0x20
202 #define REDRIVER_OFFSET 0x00
203
204 #define DP_SVID 0xFF01
205 #define VDM_ACK 0x40
206 #define VDM_CMD_RES 0x00
207 #define VDM_CMD_DIS_ID 0x01
208 #define VDM_CMD_DIS_SVID 0x02
209 #define VDM_CMD_DIS_MOD 0x03
210 #define VDM_CMD_ENTER_MODE 0x04
211 #define VDM_CMD_EXIT_MODE 0x05
212 #define VDM_CMD_ATTENTION 0x06
213 #define VDM_CMD_GET_STS 0x10
214 #define VDM_CMD_AND_ACK_MASK 0x5F
215
216 #define MAX_ALTMODE 2
217
218 #define HAS_SOURCE_CAP BIT(0)
219 #define HAS_SINK_CAP BIT(1)
220 #define HAS_SINK_WATT BIT(2)
221
222 enum anx7411_psy_state {
223 /* copy from drivers/usb/typec/tcpm */
224 ANX7411_PSY_OFFLINE = 0,
225 ANX7411_PSY_FIXED_ONLINE,
226
227 /* private */
228 /* PD keep in, but disconnct power to bq25700,
229 * this state can be active when higher capacity adapter plug in,
230 * and change to ONLINE state when higher capacity adapter plug out
231 */
232 ANX7411_PSY_HANG = 0xff,
233 };
234
235 struct typec_params {
236 int request_current; /* ma */
237 int request_voltage; /* mv */
238 int cc_connect;
239 int cc_orientation_valid;
240 int cc_status;
241 int data_role;
242 int power_role;
243 int vconn_role;
244 int dp_altmode_enter;
245 int cust_altmode_enter;
246 struct usb_role_switch *role_sw;
247 struct typec_port *port;
248 struct typec_partner *partner;
249 struct typec_mux_dev *typec_mux;
250 struct typec_switch_dev *typec_switch;
251 struct typec_altmode *amode[MAX_ALTMODE];
252 struct typec_altmode *port_amode[MAX_ALTMODE];
253 struct typec_displayport_data data;
254 int pin_assignment;
255 struct typec_capability caps;
256 u32 src_pdo[PDO_MAX_OBJECTS];
257 u32 sink_pdo[PDO_MAX_OBJECTS];
258 u8 caps_flags;
259 u8 src_pdo_nr;
260 u8 sink_pdo_nr;
261 u8 sink_watt;
262 u8 sink_voltage;
263 };
264
265 #define MAX_BUF_LEN 30
266 struct fw_msg {
267 u8 msg_len;
268 u8 msg_type;
269 u8 buf[MAX_BUF_LEN];
270 } __packed;
271
272 struct anx7411_data {
273 int fw_version;
274 int fw_subversion;
275 struct i2c_client *tcpc_client;
276 struct i2c_client *spi_client;
277 struct fw_msg send_msg;
278 struct fw_msg recv_msg;
279 struct gpio_desc *intp_gpiod;
280 struct fwnode_handle *connector_fwnode;
281 struct typec_params typec;
282 int intp_irq;
283 struct work_struct work;
284 struct workqueue_struct *workqueue;
285 /* Lock for interrupt work queue */
286 struct mutex lock;
287
288 enum anx7411_psy_state psy_online;
289 enum power_supply_usb_type usb_type;
290 struct power_supply *psy;
291 struct power_supply_desc psy_desc;
292 struct device *dev;
293 struct fwnode_handle *switch_node;
294 struct fwnode_handle *mux_node;
295 };
296
297 static u8 snk_identity[] = {
298 LOBYTE(VID_ANALOGIX), HIBYTE(VID_ANALOGIX), 0x00, 0x82, /* snk_id_hdr */
299 0x00, 0x00, 0x00, 0x00, /* snk_cert */
300 0x00, 0x00, LOBYTE(PID_ANALOGIX), HIBYTE(PID_ANALOGIX), /* 5snk_ama */
301 };
302
303 static u8 dp_caps[4] = {0xC6, 0x00, 0x00, 0x00};
304
anx7411_reg_read(struct i2c_client * client,u8 reg_addr)305 static int anx7411_reg_read(struct i2c_client *client,
306 u8 reg_addr)
307 {
308 return i2c_smbus_read_byte_data(client, reg_addr);
309 }
310
anx7411_reg_block_read(struct i2c_client * client,u8 reg_addr,u8 len,u8 * buf)311 static int anx7411_reg_block_read(struct i2c_client *client,
312 u8 reg_addr, u8 len, u8 *buf)
313 {
314 return i2c_smbus_read_i2c_block_data(client, reg_addr, len, buf);
315 }
316
anx7411_reg_write(struct i2c_client * client,u8 reg_addr,u8 reg_val)317 static int anx7411_reg_write(struct i2c_client *client,
318 u8 reg_addr, u8 reg_val)
319 {
320 return i2c_smbus_write_byte_data(client, reg_addr, reg_val);
321 }
322
anx7411_reg_block_write(struct i2c_client * client,u8 reg_addr,u8 len,u8 * buf)323 static int anx7411_reg_block_write(struct i2c_client *client,
324 u8 reg_addr, u8 len, u8 *buf)
325 {
326 return i2c_smbus_write_i2c_block_data(client, reg_addr, len, buf);
327 }
328
329 static struct anx7411_i2c_select anx7411_i2c_addr[] = {
330 {TCPC_ADDRESS1, SPI_ADDRESS1},
331 {TCPC_ADDRESS2, SPI_ADDRESS2},
332 {TCPC_ADDRESS3, SPI_ADDRESS3},
333 {TCPC_ADDRESS4, SPI_ADDRESS4},
334 };
335
anx7411_detect_power_mode(struct anx7411_data * ctx)336 static int anx7411_detect_power_mode(struct anx7411_data *ctx)
337 {
338 int ret;
339 int mode;
340
341 ret = anx7411_reg_read(ctx->spi_client, REQUEST_CURRENT);
342 if (ret < 0)
343 return ret;
344
345 ctx->typec.request_current = ret * CURRENT_UNIT; /* 50ma per unit */
346
347 ret = anx7411_reg_read(ctx->spi_client, REQUEST_VOLTAGE);
348 if (ret < 0)
349 return ret;
350
351 ctx->typec.request_voltage = ret * VOLTAGE_UNIT; /* 100mv per unit */
352
353 if (ctx->psy_online == ANX7411_PSY_OFFLINE) {
354 ctx->psy_online = ANX7411_PSY_FIXED_ONLINE;
355 ctx->usb_type = POWER_SUPPLY_USB_TYPE_PD;
356 power_supply_changed(ctx->psy);
357 }
358
359 if (!ctx->typec.cc_orientation_valid)
360 return 0;
361
362 if (ctx->typec.cc_connect == CC1_CONNECTED)
363 mode = CC1_RP(ctx->typec.cc_status);
364 else
365 mode = CC2_RP(ctx->typec.cc_status);
366 if (mode) {
367 typec_set_pwr_opmode(ctx->typec.port, mode - 1);
368 return 0;
369 }
370
371 typec_set_pwr_opmode(ctx->typec.port, TYPEC_PWR_MODE_PD);
372
373 return 0;
374 }
375
anx7411_register_partner(struct anx7411_data * ctx,int pd,int accessory)376 static int anx7411_register_partner(struct anx7411_data *ctx,
377 int pd, int accessory)
378 {
379 struct typec_partner_desc desc;
380 struct typec_partner *partner;
381
382 if (ctx->typec.partner)
383 return 0;
384
385 desc.usb_pd = pd;
386 desc.accessory = accessory;
387 desc.identity = NULL;
388 partner = typec_register_partner(ctx->typec.port, &desc);
389 if (IS_ERR(partner))
390 return PTR_ERR(partner);
391
392 ctx->typec.partner = partner;
393
394 return 0;
395 }
396
anx7411_detect_cc_orientation(struct anx7411_data * ctx)397 static int anx7411_detect_cc_orientation(struct anx7411_data *ctx)
398 {
399 struct device *dev = &ctx->spi_client->dev;
400 int ret;
401 int cc1_rd, cc2_rd;
402 int cc1_ra, cc2_ra;
403 int cc1_rp, cc2_rp;
404
405 ret = anx7411_reg_read(ctx->spi_client, CC_STATUS);
406 if (ret < 0)
407 return ret;
408
409 ctx->typec.cc_status = ret;
410
411 cc1_rd = ret & CC1_RD ? 1 : 0;
412 cc2_rd = ret & CC2_RD ? 1 : 0;
413 cc1_ra = ret & CC1_RA ? 1 : 0;
414 cc2_ra = ret & CC2_RA ? 1 : 0;
415 cc1_rp = CC1_RP(ret);
416 cc2_rp = CC2_RP(ret);
417
418 /* Debug cable, nothing to do */
419 if (cc1_rd && cc2_rd) {
420 ctx->typec.cc_orientation_valid = 0;
421 return anx7411_register_partner(ctx, 0, TYPEC_ACCESSORY_DEBUG);
422 }
423
424 if (cc1_ra && cc2_ra) {
425 ctx->typec.cc_orientation_valid = 0;
426 return anx7411_register_partner(ctx, 0, TYPEC_ACCESSORY_AUDIO);
427 }
428
429 ctx->typec.cc_orientation_valid = 1;
430
431 ret = anx7411_register_partner(ctx, 1, TYPEC_ACCESSORY_NONE);
432 if (ret) {
433 dev_err(dev, "register partner\n");
434 return ret;
435 }
436
437 if (cc1_rd || cc1_rp) {
438 typec_set_orientation(ctx->typec.port, TYPEC_ORIENTATION_NORMAL);
439 ctx->typec.cc_connect = CC1_CONNECTED;
440 }
441
442 if (cc2_rd || cc2_rp) {
443 typec_set_orientation(ctx->typec.port, TYPEC_ORIENTATION_REVERSE);
444 ctx->typec.cc_connect = CC2_CONNECTED;
445 }
446
447 return 0;
448 }
449
anx7411_set_mux(struct anx7411_data * ctx,int pin_assignment)450 static int anx7411_set_mux(struct anx7411_data *ctx, int pin_assignment)
451 {
452 int mode = TYPEC_STATE_SAFE;
453
454 switch (pin_assignment) {
455 case SELECT_PIN_ASSIGMENT_U:
456 /* default 4 line USB 3.1 */
457 mode = TYPEC_STATE_MODAL;
458 break;
459 case SELECT_PIN_ASSIGMENT_C:
460 case SELECT_PIN_ASSIGMENT_E:
461 /* 4 line DP */
462 mode = TYPEC_STATE_SAFE;
463 break;
464 case SELECT_PIN_ASSIGMENT_D:
465 /* 2 line DP, 2 line USB */
466 mode = TYPEC_MODE_USB3;
467 break;
468 default:
469 mode = TYPEC_STATE_SAFE;
470 break;
471 }
472
473 ctx->typec.pin_assignment = pin_assignment;
474
475 return typec_set_mode(ctx->typec.port, mode);
476 }
477
anx7411_set_usb_role(struct anx7411_data * ctx,enum usb_role role)478 static int anx7411_set_usb_role(struct anx7411_data *ctx, enum usb_role role)
479 {
480 if (!ctx->typec.role_sw)
481 return 0;
482
483 return usb_role_switch_set_role(ctx->typec.role_sw, role);
484 }
485
anx7411_data_role_detect(struct anx7411_data * ctx)486 static int anx7411_data_role_detect(struct anx7411_data *ctx)
487 {
488 int ret;
489
490 ret = anx7411_reg_read(ctx->spi_client, SYSTEM_STSTUS);
491 if (ret < 0)
492 return ret;
493
494 ctx->typec.data_role = (ret & DATA_ROLE) ? TYPEC_HOST : TYPEC_DEVICE;
495 ctx->typec.vconn_role = (ret & VCONN_STATUS) ? TYPEC_SOURCE : TYPEC_SINK;
496
497 typec_set_data_role(ctx->typec.port, ctx->typec.data_role);
498
499 typec_set_vconn_role(ctx->typec.port, ctx->typec.vconn_role);
500
501 if (ctx->typec.data_role == TYPEC_HOST)
502 return anx7411_set_usb_role(ctx, USB_ROLE_HOST);
503
504 return anx7411_set_usb_role(ctx, USB_ROLE_DEVICE);
505 }
506
anx7411_power_role_detect(struct anx7411_data * ctx)507 static int anx7411_power_role_detect(struct anx7411_data *ctx)
508 {
509 int ret;
510
511 ret = anx7411_reg_read(ctx->spi_client, SYSTEM_STSTUS);
512 if (ret < 0)
513 return ret;
514
515 ctx->typec.power_role = (ret & SINK_STATUS) ? TYPEC_SINK : TYPEC_SOURCE;
516
517 if (ctx->typec.power_role == TYPEC_SOURCE) {
518 ctx->typec.request_current = DEF_1_5A;
519 ctx->typec.request_voltage = DEF_5V;
520 }
521
522 typec_set_pwr_role(ctx->typec.port, ctx->typec.power_role);
523
524 return 0;
525 }
526
anx7411_cc_status_detect(struct anx7411_data * ctx)527 static int anx7411_cc_status_detect(struct anx7411_data *ctx)
528 {
529 anx7411_detect_cc_orientation(ctx);
530 anx7411_detect_power_mode(ctx);
531
532 return 0;
533 }
534
anx7411_partner_unregister_altmode(struct anx7411_data * ctx)535 static void anx7411_partner_unregister_altmode(struct anx7411_data *ctx)
536 {
537 int i;
538
539 ctx->typec.dp_altmode_enter = 0;
540 ctx->typec.cust_altmode_enter = 0;
541
542 for (i = 0; i < MAX_ALTMODE; i++)
543 if (ctx->typec.amode[i]) {
544 typec_unregister_altmode(ctx->typec.amode[i]);
545 ctx->typec.amode[i] = NULL;
546 }
547
548 ctx->typec.pin_assignment = 0;
549 }
550
anx7411_typec_register_altmode(struct anx7411_data * ctx,int svid,int vdo)551 static int anx7411_typec_register_altmode(struct anx7411_data *ctx,
552 int svid, int vdo)
553 {
554 struct device *dev = &ctx->spi_client->dev;
555 struct typec_altmode_desc desc;
556 int err;
557 int i;
558
559 desc.svid = svid;
560 desc.vdo = vdo;
561
562 for (i = 0; i < MAX_ALTMODE; i++)
563 if (!ctx->typec.amode[i])
564 break;
565
566 desc.mode = i + 1; /* start with 1 */
567
568 if (i >= MAX_ALTMODE) {
569 dev_err(dev, "no altmode space for registering\n");
570 return -ENOMEM;
571 }
572
573 ctx->typec.amode[i] = typec_partner_register_altmode(ctx->typec.partner,
574 &desc);
575 if (IS_ERR(ctx->typec.amode[i])) {
576 dev_err(dev, "failed to register altmode\n");
577 err = PTR_ERR(ctx->typec.amode[i]);
578 ctx->typec.amode[i] = NULL;
579 return err;
580 }
581
582 return 0;
583 }
584
anx7411_unregister_partner(struct anx7411_data * ctx)585 static void anx7411_unregister_partner(struct anx7411_data *ctx)
586 {
587 if (ctx->typec.partner) {
588 typec_unregister_partner(ctx->typec.partner);
589 ctx->typec.partner = NULL;
590 }
591 }
592
anx7411_update_altmode(struct anx7411_data * ctx,int svid)593 static int anx7411_update_altmode(struct anx7411_data *ctx, int svid)
594 {
595 int i;
596
597 if (svid == DP_SVID)
598 ctx->typec.dp_altmode_enter = 1;
599 else
600 ctx->typec.cust_altmode_enter = 1;
601
602 for (i = 0; i < MAX_ALTMODE; i++) {
603 if (!ctx->typec.amode[i])
604 continue;
605
606 if (ctx->typec.amode[i]->svid == svid) {
607 typec_altmode_update_active(ctx->typec.amode[i], true);
608 typec_altmode_notify(ctx->typec.amode[i],
609 ctx->typec.pin_assignment,
610 &ctx->typec.data);
611 break;
612 }
613 }
614
615 return 0;
616 }
617
anx7411_register_altmode(struct anx7411_data * ctx,bool dp_altmode,u8 * buf)618 static int anx7411_register_altmode(struct anx7411_data *ctx,
619 bool dp_altmode, u8 *buf)
620 {
621 int ret;
622 int svid;
623 int mid;
624
625 if (!ctx->typec.partner)
626 return 0;
627
628 svid = DP_SVID;
629 if (dp_altmode) {
630 mid = buf[0] | (buf[1] << 8) | (buf[2] << 16) | (buf[3] << 24);
631
632 return anx7411_typec_register_altmode(ctx, svid, mid);
633 }
634
635 svid = (buf[3] << 8) | buf[2];
636 if ((buf[0] & VDM_CMD_AND_ACK_MASK) != (VDM_ACK | VDM_CMD_ENTER_MODE))
637 return anx7411_update_altmode(ctx, svid);
638
639 if ((buf[0] & VDM_CMD_AND_ACK_MASK) != (VDM_ACK | VDM_CMD_DIS_MOD))
640 return 0;
641
642 mid = buf[4] | (buf[5] << 8) | (buf[6] << 16) | (buf[7] << 24);
643
644 ret = anx7411_typec_register_altmode(ctx, svid, mid);
645 if (ctx->typec.cust_altmode_enter)
646 ret |= anx7411_update_altmode(ctx, svid);
647
648 return ret;
649 }
650
anx7411_parse_cmd(struct anx7411_data * ctx,u8 type,u8 * buf,u8 len)651 static int anx7411_parse_cmd(struct anx7411_data *ctx, u8 type, u8 *buf, u8 len)
652 {
653 struct device *dev = &ctx->spi_client->dev;
654 u8 cur_50ma, vol_100mv;
655
656 switch (type) {
657 case TYPE_SRC_CAP:
658 cur_50ma = anx7411_reg_read(ctx->spi_client, REQUEST_CURRENT);
659 vol_100mv = anx7411_reg_read(ctx->spi_client, REQUEST_VOLTAGE);
660
661 ctx->typec.request_voltage = vol_100mv * VOLTAGE_UNIT;
662 ctx->typec.request_current = cur_50ma * CURRENT_UNIT;
663
664 ctx->psy_online = ANX7411_PSY_FIXED_ONLINE;
665 ctx->usb_type = POWER_SUPPLY_USB_TYPE_PD;
666 power_supply_changed(ctx->psy);
667 break;
668 case TYPE_SNK_CAP:
669 break;
670 case TYPE_SVID:
671 break;
672 case TYPE_SNK_IDENTITY:
673 break;
674 case TYPE_GET_DP_ALT_ENTER:
675 /* DP alt mode enter success */
676 if (buf[0])
677 anx7411_update_altmode(ctx, DP_SVID);
678 break;
679 case TYPE_DP_ALT_ENTER:
680 /* Update DP altmode */
681 anx7411_update_altmode(ctx, DP_SVID);
682 break;
683 case TYPE_OBJ_REQ:
684 anx7411_detect_power_mode(ctx);
685 break;
686 case TYPE_DP_CONFIGURE:
687 anx7411_set_mux(ctx, buf[1]);
688 break;
689 case TYPE_DP_DISCOVER_MODES_INFO:
690 /* Make sure discover modes valid */
691 if (buf[0] | buf[1])
692 /* Register DP Altmode */
693 anx7411_register_altmode(ctx, 1, buf);
694 break;
695 case TYPE_VDM:
696 /* Register other altmode */
697 anx7411_register_altmode(ctx, 0, buf);
698 break;
699 default:
700 dev_err(dev, "ignore message(0x%.02x).\n", type);
701 break;
702 }
703
704 return 0;
705 }
706
checksum(struct device * dev,u8 * buf,u8 len)707 static u8 checksum(struct device *dev, u8 *buf, u8 len)
708 {
709 u8 ret = 0;
710 u8 i;
711
712 for (i = 0; i < len; i++)
713 ret += buf[i];
714
715 return ret;
716 }
717
anx7411_read_msg_ctrl_status(struct i2c_client * client)718 static int anx7411_read_msg_ctrl_status(struct i2c_client *client)
719 {
720 return anx7411_reg_read(client, CMD_SEND_BUF);
721 }
722
anx7411_wait_msg_empty(struct i2c_client * client)723 static int anx7411_wait_msg_empty(struct i2c_client *client)
724 {
725 int val;
726
727 return readx_poll_timeout(anx7411_read_msg_ctrl_status,
728 client, val, (val < 0) || (val == 0),
729 2000, 2000 * 150);
730 }
731
anx7411_send_msg(struct anx7411_data * ctx,u8 type,u8 * buf,u8 size)732 static int anx7411_send_msg(struct anx7411_data *ctx, u8 type, u8 *buf, u8 size)
733 {
734 struct device *dev = &ctx->spi_client->dev;
735 struct fw_msg *msg = &ctx->send_msg;
736 u8 crc;
737 int ret;
738
739 size = min_t(u8, size, (u8)MAX_BUF_LEN);
740 memcpy(msg->buf, buf, size);
741 msg->msg_type = type;
742 /* msg len equals buffer length + msg_type */
743 msg->msg_len = size + 1;
744
745 /* Do CRC check for all buffer data and msg_len and msg_type */
746 crc = checksum(dev, (u8 *)msg, size + HEADER_LEN);
747 msg->buf[size] = 0 - crc;
748
749 ret = anx7411_wait_msg_empty(ctx->spi_client);
750 if (ret)
751 return ret;
752
753 ret = anx7411_reg_block_write(ctx->spi_client,
754 CMD_SEND_BUF + 1, size + HEADER_LEN,
755 &msg->msg_type);
756 ret |= anx7411_reg_write(ctx->spi_client, CMD_SEND_BUF,
757 msg->msg_len);
758 return ret;
759 }
760
anx7411_process_cmd(struct anx7411_data * ctx)761 static int anx7411_process_cmd(struct anx7411_data *ctx)
762 {
763 struct device *dev = &ctx->spi_client->dev;
764 struct fw_msg *msg = &ctx->recv_msg;
765 u8 len;
766 u8 crc;
767 int ret;
768
769 /* Read message from firmware */
770 ret = anx7411_reg_block_read(ctx->spi_client, CMD_RECV_BUF,
771 MSG_LEN, (u8 *)msg);
772 if (ret < 0)
773 return 0;
774
775 if (!msg->msg_len)
776 return 0;
777
778 ret = anx7411_reg_write(ctx->spi_client, CMD_RECV_BUF, 0);
779 if (ret)
780 return ret;
781
782 len = msg->msg_len & MSG_LEN_MASK;
783 crc = checksum(dev, (u8 *)msg, len + HEADER_LEN);
784 if (crc) {
785 dev_err(dev, "message error crc(0x%.02x)\n", crc);
786 return -ERANGE;
787 }
788
789 return anx7411_parse_cmd(ctx, msg->msg_type, msg->buf, len - 1);
790 }
791
anx7411_translate_payload(struct device * dev,__le32 * payload,u32 * pdo,int nr,const char * type)792 static void anx7411_translate_payload(struct device *dev, __le32 *payload,
793 u32 *pdo, int nr, const char *type)
794 {
795 int i;
796
797 if (nr > PDO_MAX_OBJECTS) {
798 dev_err(dev, "nr(%d) exceed PDO_MAX_OBJECTS(%d)\n",
799 nr, PDO_MAX_OBJECTS);
800
801 return;
802 }
803
804 for (i = 0; i < nr; i++)
805 payload[i] = cpu_to_le32(pdo[i]);
806 }
807
anx7411_config(struct anx7411_data * ctx)808 static int anx7411_config(struct anx7411_data *ctx)
809 {
810 struct device *dev = &ctx->spi_client->dev;
811 struct typec_params *typecp = &ctx->typec;
812 __le32 payload[PDO_MAX_OBJECTS];
813 int ret;
814
815 /* Config PD FW work under PD 2.0 */
816 ret = anx7411_reg_write(ctx->spi_client, PD_REV_INIT, PD_REV20);
817 ret |= anx7411_reg_write(ctx->tcpc_client, FW_CTRL_0,
818 UNSTRUCT_VDM_EN | DELAY_200MS |
819 VSAFE1 | FRS_EN);
820 ret |= anx7411_reg_write(ctx->spi_client, FW_CTRL_1,
821 AUTO_PD_EN | FORCE_SEND_RDO);
822
823 /* Set VBUS current threshold */
824 ret |= anx7411_reg_write(ctx->tcpc_client, VBUS_THRESHOLD_H, 0xff);
825 ret |= anx7411_reg_write(ctx->tcpc_client, VBUS_THRESHOLD_L, 0x03);
826
827 /* Fix dongle compatible issue */
828 ret |= anx7411_reg_write(ctx->tcpc_client, FW_PARAM,
829 anx7411_reg_read(ctx->tcpc_client, FW_PARAM) |
830 DONGLE_IOP);
831 ret |= anx7411_reg_write(ctx->spi_client, INT_MASK, 0);
832
833 ret |= anx7411_reg_write(ctx->spi_client, PD_EXT_MSG_CTRL, 0xFF);
834 if (ret)
835 return ret;
836
837 if (typecp->caps_flags & HAS_SOURCE_CAP) {
838 anx7411_translate_payload(dev, payload, typecp->src_pdo,
839 typecp->src_pdo_nr, "source");
840 anx7411_send_msg(ctx, TYPE_SRC_CAP, (u8 *)&payload,
841 typecp->src_pdo_nr * 4);
842 anx7411_send_msg(ctx, TYPE_SNK_IDENTITY, snk_identity,
843 sizeof(snk_identity));
844 anx7411_send_msg(ctx, TYPE_SET_SNK_DP_CAP, dp_caps,
845 sizeof(dp_caps));
846 }
847
848 if (typecp->caps_flags & HAS_SINK_CAP) {
849 anx7411_translate_payload(dev, payload, typecp->sink_pdo,
850 typecp->sink_pdo_nr, "sink");
851 anx7411_send_msg(ctx, TYPE_SNK_CAP, (u8 *)&payload,
852 typecp->sink_pdo_nr * 4);
853 }
854
855 if (typecp->caps_flags & HAS_SINK_WATT) {
856 if (typecp->sink_watt) {
857 ret |= anx7411_reg_write(ctx->spi_client, MAX_POWER,
858 typecp->sink_watt);
859 /* Set min power to 1W */
860 ret |= anx7411_reg_write(ctx->spi_client, MIN_POWER, 2);
861 }
862
863 if (typecp->sink_voltage)
864 ret |= anx7411_reg_write(ctx->spi_client, MAX_VOLTAGE,
865 typecp->sink_voltage);
866 if (ret)
867 return ret;
868 }
869
870 if (!typecp->caps_flags)
871 usleep_range(5000, 6000);
872
873 ctx->fw_version = anx7411_reg_read(ctx->spi_client, FW_VER);
874 ctx->fw_subversion = anx7411_reg_read(ctx->spi_client, FW_SUBVER);
875
876 return 0;
877 }
878
anx7411_chip_standby(struct anx7411_data * ctx)879 static void anx7411_chip_standby(struct anx7411_data *ctx)
880 {
881 int ret;
882 u8 cc1, cc2;
883 struct device *dev = &ctx->spi_client->dev;
884
885 ret = anx7411_reg_write(ctx->spi_client, OCM_CTRL_0,
886 anx7411_reg_read(ctx->spi_client, OCM_CTRL_0) |
887 OCM_RESET);
888 ret |= anx7411_reg_write(ctx->tcpc_client, ANALOG_CTRL_10, 0x80);
889 /* Set TCPC to RD and DRP enable */
890 cc1 = FIELD_PREP(TCPC_ROLE_CTRL_CC1, TCPC_ROLE_CTRL_CC_RD);
891 cc2 = FIELD_PREP(TCPC_ROLE_CTRL_CC2, TCPC_ROLE_CTRL_CC_RD);
892 ret |= anx7411_reg_write(ctx->tcpc_client, TCPC_ROLE_CTRL,
893 TCPC_ROLE_CTRL_DRP | cc1 | cc2);
894
895 /* Send DRP toggle command */
896 ret |= anx7411_reg_write(ctx->tcpc_client, TCPC_COMMAND,
897 TCPC_CMD_LOOK4CONNECTION);
898
899 /* Send TCPC enter standby command */
900 ret |= anx7411_reg_write(ctx->tcpc_client,
901 TCPC_COMMAND, TCPC_CMD_I2C_IDLE);
902 if (ret)
903 dev_err(dev, "Chip standby failed\n");
904 }
905
anx7411_work_func(struct work_struct * work)906 static void anx7411_work_func(struct work_struct *work)
907 {
908 int ret;
909 u8 buf[STATUS_LEN];
910 u8 int_change; /* Interrupt change */
911 u8 int_status; /* Firmware status update */
912 u8 alert0, alert1; /* Interrupt alert source */
913 struct anx7411_data *ctx = container_of(work, struct anx7411_data, work);
914 struct device *dev = &ctx->spi_client->dev;
915
916 mutex_lock(&ctx->lock);
917
918 /* Read interrupt change status */
919 ret = anx7411_reg_block_read(ctx->spi_client, INT_STS, STATUS_LEN, buf);
920 if (ret < 0) {
921 /* Power standby mode, just return */
922 goto unlock;
923 }
924 int_change = buf[0];
925 int_status = buf[1];
926
927 /* Read alert register */
928 ret = anx7411_reg_block_read(ctx->tcpc_client, ALERT_0, STATUS_LEN, buf);
929 if (ret < 0)
930 goto unlock;
931
932 alert0 = buf[0];
933 alert1 = buf[1];
934
935 /* Clear interrupt and alert status */
936 ret = anx7411_reg_write(ctx->spi_client, INT_STS, 0);
937 ret |= anx7411_reg_write(ctx->tcpc_client, ALERT_0, alert0);
938 ret |= anx7411_reg_write(ctx->tcpc_client, ALERT_1, alert1);
939 if (ret)
940 goto unlock;
941
942 if (alert1 & INTP_POW_OFF) {
943 anx7411_partner_unregister_altmode(ctx);
944 if (anx7411_set_usb_role(ctx, USB_ROLE_NONE))
945 dev_err(dev, "Set usb role\n");
946 anx7411_unregister_partner(ctx);
947 ctx->psy_online = ANX7411_PSY_OFFLINE;
948 ctx->usb_type = POWER_SUPPLY_USB_TYPE_C;
949 ctx->typec.request_voltage = 0;
950 ctx->typec.request_current = 0;
951 power_supply_changed(ctx->psy);
952 anx7411_chip_standby(ctx);
953 goto unlock;
954 }
955
956 if ((alert0 & SOFTWARE_INT) && (int_change & OCM_BOOT_UP)) {
957 if (anx7411_config(ctx))
958 dev_err(dev, "Config failed\n");
959 if (anx7411_data_role_detect(ctx))
960 dev_err(dev, "set PD data role\n");
961 if (anx7411_power_role_detect(ctx))
962 dev_err(dev, "set PD power role\n");
963 anx7411_set_mux(ctx, SELECT_PIN_ASSIGMENT_C);
964 }
965
966 if (alert0 & RECEIVED_MSG)
967 anx7411_process_cmd(ctx);
968
969 ret = (int_status & DATA_ROLE) ? TYPEC_HOST : TYPEC_DEVICE;
970 if (ctx->typec.data_role != ret)
971 if (anx7411_data_role_detect(ctx))
972 dev_err(dev, "set PD data role\n");
973
974 ret = (int_status & SINK_STATUS) ? TYPEC_SINK : TYPEC_SOURCE;
975 if (ctx->typec.power_role != ret)
976 if (anx7411_power_role_detect(ctx))
977 dev_err(dev, "set PD power role\n");
978
979 if ((alert0 & SOFTWARE_INT) && (int_change & CC_STATUS_CHANGE))
980 anx7411_cc_status_detect(ctx);
981
982 unlock:
983 mutex_unlock(&ctx->lock);
984 }
985
anx7411_intr_isr(int irq,void * data)986 static irqreturn_t anx7411_intr_isr(int irq, void *data)
987 {
988 struct anx7411_data *ctx = (struct anx7411_data *)data;
989
990 queue_work(ctx->workqueue, &ctx->work);
991
992 return IRQ_HANDLED;
993 }
994
anx7411_register_i2c_dummy_clients(struct anx7411_data * ctx,struct i2c_client * client)995 static int anx7411_register_i2c_dummy_clients(struct anx7411_data *ctx,
996 struct i2c_client *client)
997 {
998 int i;
999 u8 spi_addr;
1000
1001 for (i = 0; i < ARRAY_SIZE(anx7411_i2c_addr); i++) {
1002 if (client->addr == (anx7411_i2c_addr[i].tcpc_address >> 1)) {
1003 spi_addr = anx7411_i2c_addr[i].spi_address >> 1;
1004 ctx->spi_client = i2c_new_dummy_device(client->adapter,
1005 spi_addr);
1006 if (!IS_ERR(ctx->spi_client))
1007 return 0;
1008 }
1009 }
1010
1011 dev_err(&client->dev, "unable to get SPI slave\n");
1012 return -ENOMEM;
1013 }
1014
anx7411_port_unregister_altmodes(struct typec_altmode ** adev)1015 static void anx7411_port_unregister_altmodes(struct typec_altmode **adev)
1016 {
1017 int i;
1018
1019 for (i = 0; i < MAX_ALTMODE; i++)
1020 if (adev[i]) {
1021 typec_unregister_altmode(adev[i]);
1022 adev[i] = NULL;
1023 }
1024 }
1025
anx7411_port_unregister(struct typec_params * typecp)1026 static void anx7411_port_unregister(struct typec_params *typecp)
1027 {
1028 fwnode_handle_put(typecp->caps.fwnode);
1029 anx7411_port_unregister_altmodes(typecp->port_amode);
1030 if (typecp->port)
1031 typec_unregister_port(typecp->port);
1032 if (typecp->role_sw)
1033 usb_role_switch_put(typecp->role_sw);
1034 }
1035
anx7411_usb_mux_set(struct typec_mux_dev * mux,struct typec_mux_state * state)1036 static int anx7411_usb_mux_set(struct typec_mux_dev *mux,
1037 struct typec_mux_state *state)
1038 {
1039 struct anx7411_data *ctx = typec_mux_get_drvdata(mux);
1040 struct device *dev = &ctx->spi_client->dev;
1041 int has_dp;
1042
1043 has_dp = (state->alt && state->alt->svid == USB_TYPEC_DP_SID &&
1044 state->alt->mode == USB_TYPEC_DP_MODE);
1045 if (!has_dp)
1046 dev_err(dev, "dp altmode not register\n");
1047
1048 return 0;
1049 }
1050
anx7411_usb_set_orientation(struct typec_switch_dev * sw,enum typec_orientation orientation)1051 static int anx7411_usb_set_orientation(struct typec_switch_dev *sw,
1052 enum typec_orientation orientation)
1053 {
1054 /* No need set */
1055
1056 return 0;
1057 }
1058
anx7411_register_switch(struct anx7411_data * ctx,struct device * dev,struct fwnode_handle * fwnode)1059 static int anx7411_register_switch(struct anx7411_data *ctx,
1060 struct device *dev,
1061 struct fwnode_handle *fwnode)
1062 {
1063 struct typec_switch_desc sw_desc = { };
1064
1065 sw_desc.fwnode = fwnode;
1066 sw_desc.drvdata = ctx;
1067 sw_desc.name = fwnode_get_name(fwnode);
1068 sw_desc.set = anx7411_usb_set_orientation;
1069
1070 ctx->typec.typec_switch = typec_switch_register(dev, &sw_desc);
1071 if (IS_ERR(ctx->typec.typec_switch)) {
1072 dev_err(dev, "switch register failed\n");
1073 return PTR_ERR(ctx->typec.typec_switch);
1074 }
1075
1076 return 0;
1077 }
1078
anx7411_register_mux(struct anx7411_data * ctx,struct device * dev,struct fwnode_handle * fwnode)1079 static int anx7411_register_mux(struct anx7411_data *ctx,
1080 struct device *dev,
1081 struct fwnode_handle *fwnode)
1082 {
1083 struct typec_mux_desc mux_desc = { };
1084
1085 mux_desc.fwnode = fwnode;
1086 mux_desc.drvdata = ctx;
1087 mux_desc.name = fwnode_get_name(fwnode);
1088 mux_desc.set = anx7411_usb_mux_set;
1089
1090 ctx->typec.typec_mux = typec_mux_register(dev, &mux_desc);
1091 if (IS_ERR(ctx->typec.typec_mux)) {
1092 dev_err(dev, "mux register failed\n");
1093 return PTR_ERR(ctx->typec.typec_mux);
1094 }
1095
1096 return 0;
1097 }
1098
anx7411_unregister_mux(struct anx7411_data * ctx)1099 static void anx7411_unregister_mux(struct anx7411_data *ctx)
1100 {
1101 if (ctx->typec.typec_mux) {
1102 typec_mux_unregister(ctx->typec.typec_mux);
1103 ctx->typec.typec_mux = NULL;
1104 fwnode_handle_put(ctx->mux_node);
1105 }
1106 }
1107
anx7411_unregister_switch(struct anx7411_data * ctx)1108 static void anx7411_unregister_switch(struct anx7411_data *ctx)
1109 {
1110 if (ctx->typec.typec_switch) {
1111 typec_switch_unregister(ctx->typec.typec_switch);
1112 ctx->typec.typec_switch = NULL;
1113 fwnode_handle_put(ctx->switch_node);
1114 }
1115 }
1116
anx7411_typec_switch_probe(struct anx7411_data * ctx,struct device * dev)1117 static int anx7411_typec_switch_probe(struct anx7411_data *ctx,
1118 struct device *dev)
1119 {
1120 int ret;
1121
1122 ctx->switch_node = device_get_named_child_node(dev, "orientation_switch");
1123 if (!ctx->switch_node)
1124 return 0;
1125
1126 ret = anx7411_register_switch(ctx, dev, ctx->switch_node);
1127 if (ret) {
1128 dev_err(dev, "failed register switch");
1129 fwnode_handle_put(ctx->switch_node);
1130 return ret;
1131 }
1132
1133 ctx->mux_node = device_get_named_child_node(dev, "mode_switch");
1134 if (!ctx->mux_node) {
1135 dev_err(dev, "no typec mux exist");
1136 ret = -ENODEV;
1137 goto unregister_switch;
1138 }
1139
1140 ret = anx7411_register_mux(ctx, dev, ctx->mux_node);
1141 if (ret) {
1142 dev_err(dev, "failed register mode switch");
1143 fwnode_handle_put(ctx->mux_node);
1144 ret = -ENODEV;
1145 goto unregister_switch;
1146 }
1147
1148 return 0;
1149
1150 unregister_switch:
1151 anx7411_unregister_switch(ctx);
1152
1153 return ret;
1154 }
1155
anx7411_typec_port_probe(struct anx7411_data * ctx,struct device * dev)1156 static int anx7411_typec_port_probe(struct anx7411_data *ctx,
1157 struct device *dev)
1158 {
1159 struct typec_capability *cap = &ctx->typec.caps;
1160 struct typec_params *typecp = &ctx->typec;
1161 struct fwnode_handle *fwnode;
1162 const char *buf;
1163 int ret, i;
1164
1165 fwnode = device_get_named_child_node(dev, "connector");
1166 if (!fwnode)
1167 return -EINVAL;
1168
1169 ret = fwnode_property_read_string(fwnode, "power-role", &buf);
1170 if (ret) {
1171 dev_err(dev, "power-role not found: %d\n", ret);
1172 goto put_fwnode;
1173 }
1174
1175 ret = typec_find_port_power_role(buf);
1176 if (ret < 0)
1177 goto put_fwnode;
1178 cap->type = ret;
1179
1180 ret = fwnode_property_read_string(fwnode, "data-role", &buf);
1181 if (ret) {
1182 dev_err(dev, "data-role not found: %d\n", ret);
1183 goto put_fwnode;
1184 }
1185
1186 ret = typec_find_port_data_role(buf);
1187 if (ret < 0)
1188 goto put_fwnode;
1189 cap->data = ret;
1190
1191 ret = fwnode_property_read_string(fwnode, "try-power-role", &buf);
1192 if (ret) {
1193 dev_err(dev, "try-power-role not found: %d\n", ret);
1194 goto put_fwnode;
1195 }
1196
1197 ret = typec_find_power_role(buf);
1198 if (ret < 0)
1199 goto put_fwnode;
1200 cap->prefer_role = ret;
1201
1202 /* Get source pdos */
1203 ret = fwnode_property_count_u32(fwnode, "source-pdos");
1204 if (ret > 0) {
1205 typecp->src_pdo_nr = min_t(u8, ret, PDO_MAX_OBJECTS);
1206 ret = fwnode_property_read_u32_array(fwnode, "source-pdos",
1207 typecp->src_pdo,
1208 typecp->src_pdo_nr);
1209 if (ret < 0) {
1210 dev_err(dev, "source cap validate failed: %d\n", ret);
1211 goto put_fwnode;
1212 }
1213
1214 typecp->caps_flags |= HAS_SOURCE_CAP;
1215 }
1216
1217 ret = fwnode_property_count_u32(fwnode, "sink-pdos");
1218 if (ret > 0) {
1219 typecp->sink_pdo_nr = min_t(u8, ret, PDO_MAX_OBJECTS);
1220 ret = fwnode_property_read_u32_array(fwnode, "sink-pdos",
1221 typecp->sink_pdo,
1222 typecp->sink_pdo_nr);
1223 if (ret < 0) {
1224 dev_err(dev, "sink cap validate failed: %d\n", ret);
1225 goto put_fwnode;
1226 }
1227
1228 for (i = 0; i < typecp->sink_pdo_nr; i++) {
1229 ret = 0;
1230 switch (pdo_type(typecp->sink_pdo[i])) {
1231 case PDO_TYPE_FIXED:
1232 ret = pdo_fixed_voltage(typecp->sink_pdo[i]);
1233 break;
1234 case PDO_TYPE_BATT:
1235 case PDO_TYPE_VAR:
1236 ret = pdo_max_voltage(typecp->sink_pdo[i]);
1237 break;
1238 case PDO_TYPE_APDO:
1239 default:
1240 ret = 0;
1241 break;
1242 }
1243
1244 /* 100mv per unit */
1245 typecp->sink_voltage = max(5000, ret) / 100;
1246 }
1247
1248 typecp->caps_flags |= HAS_SINK_CAP;
1249 }
1250
1251 if (!fwnode_property_read_u32(fwnode, "op-sink-microwatt", &ret)) {
1252 typecp->sink_watt = ret / 500000; /* 500mw per unit */
1253 typecp->caps_flags |= HAS_SINK_WATT;
1254 }
1255
1256 cap->fwnode = fwnode;
1257
1258 ctx->typec.role_sw = usb_role_switch_get(dev);
1259 if (IS_ERR(ctx->typec.role_sw)) {
1260 dev_err(dev, "USB role switch not found.\n");
1261 ctx->typec.role_sw = NULL;
1262 }
1263
1264 ctx->typec.port = typec_register_port(dev, cap);
1265 if (IS_ERR(ctx->typec.port)) {
1266 ret = PTR_ERR(ctx->typec.port);
1267 ctx->typec.port = NULL;
1268 dev_err(dev, "Failed to register type c port %d\n", ret);
1269 goto put_usb_role_switch;
1270 }
1271
1272 typec_port_register_altmodes(ctx->typec.port, NULL, ctx,
1273 ctx->typec.port_amode,
1274 MAX_ALTMODE);
1275 return 0;
1276
1277 put_usb_role_switch:
1278 if (ctx->typec.role_sw)
1279 usb_role_switch_put(ctx->typec.role_sw);
1280 put_fwnode:
1281 fwnode_handle_put(fwnode);
1282
1283 return ret;
1284 }
1285
anx7411_typec_check_connection(struct anx7411_data * ctx)1286 static int anx7411_typec_check_connection(struct anx7411_data *ctx)
1287 {
1288 int ret;
1289
1290 ret = anx7411_reg_read(ctx->spi_client, FW_VER);
1291 if (ret < 0)
1292 return 0; /* No device attached in typec port */
1293
1294 /* Clear interrupt and alert status */
1295 ret = anx7411_reg_write(ctx->spi_client, INT_STS, 0);
1296 ret |= anx7411_reg_write(ctx->tcpc_client, ALERT_0, 0xFF);
1297 ret |= anx7411_reg_write(ctx->tcpc_client, ALERT_1, 0xFF);
1298 if (ret)
1299 return ret;
1300
1301 ret = anx7411_cc_status_detect(ctx);
1302 ret |= anx7411_power_role_detect(ctx);
1303 ret |= anx7411_data_role_detect(ctx);
1304 ret |= anx7411_set_mux(ctx, SELECT_PIN_ASSIGMENT_C);
1305 if (ret)
1306 return ret;
1307
1308 ret = anx7411_send_msg(ctx, TYPE_GET_DP_ALT_ENTER, NULL, 0);
1309 ret |= anx7411_send_msg(ctx, TYPE_GET_DP_DISCOVER_MODES_INFO, NULL, 0);
1310
1311 return ret;
1312 }
1313
anx7411_runtime_pm_suspend(struct device * dev)1314 static int __maybe_unused anx7411_runtime_pm_suspend(struct device *dev)
1315 {
1316 struct anx7411_data *ctx = dev_get_drvdata(dev);
1317
1318 mutex_lock(&ctx->lock);
1319
1320 anx7411_partner_unregister_altmode(ctx);
1321
1322 if (ctx->typec.partner)
1323 anx7411_unregister_partner(ctx);
1324
1325 mutex_unlock(&ctx->lock);
1326
1327 return 0;
1328 }
1329
anx7411_runtime_pm_resume(struct device * dev)1330 static int __maybe_unused anx7411_runtime_pm_resume(struct device *dev)
1331 {
1332 struct anx7411_data *ctx = dev_get_drvdata(dev);
1333
1334 mutex_lock(&ctx->lock);
1335 /* Detect PD connection */
1336 if (anx7411_typec_check_connection(ctx))
1337 dev_err(dev, "check connection");
1338
1339 mutex_unlock(&ctx->lock);
1340
1341 return 0;
1342 }
1343
1344 static const struct dev_pm_ops anx7411_pm_ops = {
1345 SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
1346 pm_runtime_force_resume)
1347 SET_RUNTIME_PM_OPS(anx7411_runtime_pm_suspend,
1348 anx7411_runtime_pm_resume, NULL)
1349 };
1350
anx7411_get_gpio_irq(struct anx7411_data * ctx)1351 static void anx7411_get_gpio_irq(struct anx7411_data *ctx)
1352 {
1353 struct device *dev = &ctx->tcpc_client->dev;
1354
1355 ctx->intp_gpiod = devm_gpiod_get_optional(dev, "interrupt", GPIOD_IN);
1356 if (IS_ERR_OR_NULL(ctx->intp_gpiod)) {
1357 dev_err(dev, "no interrupt gpio property\n");
1358 return;
1359 }
1360
1361 ctx->intp_irq = gpiod_to_irq(ctx->intp_gpiod);
1362 if (ctx->intp_irq < 0)
1363 dev_err(dev, "failed to get GPIO IRQ\n");
1364 }
1365
1366 static enum power_supply_property anx7411_psy_props[] = {
1367 POWER_SUPPLY_PROP_USB_TYPE,
1368 POWER_SUPPLY_PROP_ONLINE,
1369 POWER_SUPPLY_PROP_VOLTAGE_MIN,
1370 POWER_SUPPLY_PROP_VOLTAGE_MAX,
1371 POWER_SUPPLY_PROP_VOLTAGE_NOW,
1372 POWER_SUPPLY_PROP_CURRENT_MAX,
1373 POWER_SUPPLY_PROP_CURRENT_NOW,
1374 };
1375
anx7411_psy_set_prop(struct power_supply * psy,enum power_supply_property psp,const union power_supply_propval * val)1376 static int anx7411_psy_set_prop(struct power_supply *psy,
1377 enum power_supply_property psp,
1378 const union power_supply_propval *val)
1379 {
1380 struct anx7411_data *ctx = power_supply_get_drvdata(psy);
1381 int ret = 0;
1382
1383 if (psp == POWER_SUPPLY_PROP_ONLINE)
1384 ctx->psy_online = val->intval;
1385 else
1386 ret = -EINVAL;
1387
1388 power_supply_changed(ctx->psy);
1389 return ret;
1390 }
1391
anx7411_psy_prop_writeable(struct power_supply * psy,enum power_supply_property psp)1392 static int anx7411_psy_prop_writeable(struct power_supply *psy,
1393 enum power_supply_property psp)
1394 {
1395 return psp == POWER_SUPPLY_PROP_ONLINE;
1396 }
1397
anx7411_psy_get_prop(struct power_supply * psy,enum power_supply_property psp,union power_supply_propval * val)1398 static int anx7411_psy_get_prop(struct power_supply *psy,
1399 enum power_supply_property psp,
1400 union power_supply_propval *val)
1401 {
1402 struct anx7411_data *ctx = power_supply_get_drvdata(psy);
1403 int ret = 0;
1404
1405 switch (psp) {
1406 case POWER_SUPPLY_PROP_USB_TYPE:
1407 val->intval = ctx->usb_type;
1408 break;
1409 case POWER_SUPPLY_PROP_ONLINE:
1410 val->intval = ctx->psy_online;
1411 break;
1412 case POWER_SUPPLY_PROP_VOLTAGE_NOW:
1413 case POWER_SUPPLY_PROP_VOLTAGE_MIN:
1414 case POWER_SUPPLY_PROP_VOLTAGE_MAX:
1415 val->intval = (ctx->psy_online) ?
1416 ctx->typec.request_voltage * 1000 : 0;
1417 break;
1418 case POWER_SUPPLY_PROP_CURRENT_NOW:
1419 case POWER_SUPPLY_PROP_CURRENT_MAX:
1420 val->intval = (ctx->psy_online) ?
1421 ctx->typec.request_current * 1000 : 0;
1422 break;
1423 default:
1424 ret = -EINVAL;
1425 break;
1426 }
1427 return ret;
1428 }
1429
anx7411_psy_register(struct anx7411_data * ctx)1430 static int anx7411_psy_register(struct anx7411_data *ctx)
1431 {
1432 struct power_supply_desc *psy_desc = &ctx->psy_desc;
1433 struct power_supply_config psy_cfg = {};
1434 char *psy_name;
1435
1436 psy_name = devm_kasprintf(ctx->dev, GFP_KERNEL, "anx7411-source-psy-%s",
1437 dev_name(ctx->dev));
1438 if (!psy_name)
1439 return -ENOMEM;
1440
1441 psy_desc->name = psy_name;
1442 psy_desc->type = POWER_SUPPLY_TYPE_USB;
1443 psy_desc->usb_types = BIT(POWER_SUPPLY_USB_TYPE_C) |
1444 BIT(POWER_SUPPLY_USB_TYPE_PD) |
1445 BIT(POWER_SUPPLY_USB_TYPE_PD_PPS);
1446 psy_desc->properties = anx7411_psy_props;
1447 psy_desc->num_properties = ARRAY_SIZE(anx7411_psy_props);
1448
1449 psy_desc->get_property = anx7411_psy_get_prop;
1450 psy_desc->set_property = anx7411_psy_set_prop;
1451 psy_desc->property_is_writeable = anx7411_psy_prop_writeable;
1452
1453 ctx->usb_type = POWER_SUPPLY_USB_TYPE_C;
1454 ctx->psy = devm_power_supply_register(ctx->dev, psy_desc, &psy_cfg);
1455
1456 if (IS_ERR(ctx->psy))
1457 dev_warn(ctx->dev, "unable to register psy\n");
1458
1459 return PTR_ERR_OR_ZERO(ctx->psy);
1460 }
1461
anx7411_i2c_probe(struct i2c_client * client)1462 static int anx7411_i2c_probe(struct i2c_client *client)
1463 {
1464 struct anx7411_data *plat;
1465 struct device *dev = &client->dev;
1466 int ret;
1467
1468 if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_I2C_BLOCK))
1469 return -ENODEV;
1470
1471 plat = devm_kzalloc(dev, sizeof(*plat), GFP_KERNEL);
1472 if (!plat)
1473 return -ENOMEM;
1474
1475 plat->tcpc_client = client;
1476 i2c_set_clientdata(client, plat);
1477
1478 mutex_init(&plat->lock);
1479
1480 ret = anx7411_register_i2c_dummy_clients(plat, client);
1481 if (ret) {
1482 dev_err(dev, "fail to reserve I2C bus\n");
1483 return ret;
1484 }
1485
1486 ret = anx7411_typec_switch_probe(plat, dev);
1487 if (ret) {
1488 dev_err(dev, "fail to probe typec switch\n");
1489 goto free_i2c_dummy;
1490 }
1491
1492 ret = anx7411_typec_port_probe(plat, dev);
1493 if (ret) {
1494 dev_err(dev, "fail to probe typec property.\n");
1495 ret = -ENODEV;
1496 goto free_typec_switch;
1497 }
1498
1499 plat->intp_irq = client->irq;
1500 if (!client->irq)
1501 anx7411_get_gpio_irq(plat);
1502
1503 if (!plat->intp_irq) {
1504 dev_err(dev, "fail to get interrupt IRQ\n");
1505 ret = -EINVAL;
1506 goto free_typec_port;
1507 }
1508
1509 plat->dev = dev;
1510 plat->psy_online = ANX7411_PSY_OFFLINE;
1511 ret = anx7411_psy_register(plat);
1512 if (ret) {
1513 dev_err(dev, "register psy\n");
1514 goto free_typec_port;
1515 }
1516
1517 INIT_WORK(&plat->work, anx7411_work_func);
1518 plat->workqueue = alloc_workqueue("anx7411_work",
1519 WQ_FREEZABLE |
1520 WQ_MEM_RECLAIM,
1521 1);
1522 if (!plat->workqueue) {
1523 dev_err(dev, "fail to create work queue\n");
1524 ret = -ENOMEM;
1525 goto free_typec_port;
1526 }
1527
1528 ret = devm_request_threaded_irq(dev, plat->intp_irq,
1529 NULL, anx7411_intr_isr,
1530 IRQF_TRIGGER_FALLING |
1531 IRQF_ONESHOT,
1532 "anx7411-intp", plat);
1533 if (ret) {
1534 dev_err(dev, "fail to request irq\n");
1535 goto free_wq;
1536 }
1537
1538 if (anx7411_typec_check_connection(plat))
1539 dev_err(dev, "check status\n");
1540
1541 pm_runtime_enable(dev);
1542
1543 return 0;
1544
1545 free_wq:
1546 destroy_workqueue(plat->workqueue);
1547
1548 free_typec_port:
1549 anx7411_port_unregister(&plat->typec);
1550
1551 free_typec_switch:
1552 anx7411_unregister_switch(plat);
1553 anx7411_unregister_mux(plat);
1554
1555 free_i2c_dummy:
1556 i2c_unregister_device(plat->spi_client);
1557
1558 return ret;
1559 }
1560
anx7411_i2c_remove(struct i2c_client * client)1561 static void anx7411_i2c_remove(struct i2c_client *client)
1562 {
1563 struct anx7411_data *plat = i2c_get_clientdata(client);
1564
1565 anx7411_partner_unregister_altmode(plat);
1566 anx7411_unregister_partner(plat);
1567
1568 if (plat->workqueue)
1569 destroy_workqueue(plat->workqueue);
1570
1571 i2c_unregister_device(plat->spi_client);
1572
1573 anx7411_unregister_mux(plat);
1574
1575 anx7411_unregister_switch(plat);
1576
1577 anx7411_port_unregister(&plat->typec);
1578 }
1579
1580 static const struct i2c_device_id anx7411_id[] = {
1581 { "anx7411" },
1582 {}
1583 };
1584
1585 MODULE_DEVICE_TABLE(i2c, anx7411_id);
1586
1587 static const struct of_device_id anx_match_table[] = {
1588 {.compatible = "analogix,anx7411",},
1589 {},
1590 };
1591 MODULE_DEVICE_TABLE(of, anx_match_table);
1592
1593 static struct i2c_driver anx7411_driver = {
1594 .driver = {
1595 .name = "anx7411",
1596 .of_match_table = anx_match_table,
1597 .pm = &anx7411_pm_ops,
1598 },
1599 .probe = anx7411_i2c_probe,
1600 .remove = anx7411_i2c_remove,
1601
1602 .id_table = anx7411_id,
1603 };
1604
1605 module_i2c_driver(anx7411_driver);
1606
1607 MODULE_DESCRIPTION("Anx7411 USB Type-C PD driver");
1608 MODULE_AUTHOR("Xin Ji <xji@analogixsemi.com>");
1609 MODULE_LICENSE("GPL");
1610 MODULE_VERSION("0.1.5");
1611