1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* |
3 | * * extcon-rtk-type-c.c - Realtek Extcon Type C driver |
4 | * |
5 | * Copyright (C) 2023 Realtek Semiconductor Corporation |
6 | * |
7 | */ |
8 | |
9 | #include <linux/module.h> |
10 | #include <linux/kernel.h> |
11 | #include <linux/slab.h> |
12 | #include <linux/platform_device.h> |
13 | #include <linux/of.h> |
14 | #include <linux/of_address.h> |
15 | #include <linux/of_irq.h> |
16 | #include <linux/of_gpio.h> |
17 | #include <linux/io.h> |
18 | #include <linux/interrupt.h> |
19 | #include <linux/syscalls.h> |
20 | #include <linux/suspend.h> |
21 | #include <linux/debugfs.h> |
22 | #include <linux/extcon.h> |
23 | #include <linux/extcon-provider.h> |
24 | #include <linux/sys_soc.h> |
25 | #include <linux/nvmem-consumer.h> |
26 | #include <linux/gpio/consumer.h> |
27 | #include <linux/usb/otg.h> |
28 | #include <linux/usb/typec.h> |
29 | |
30 | struct cc_param { |
31 | u32 rp_4p7k_code; |
32 | u32 rp_36k_code; |
33 | u32 rp_12k_code; |
34 | u32 rd_code; |
35 | u32 ra_code; |
36 | u32 vref_2p6v; |
37 | u32 vref_1p23v; |
38 | u32 vref_0p8v; |
39 | u32 vref_0p66v; |
40 | u32 vref_0p4v; |
41 | u32 vref_0p2v; |
42 | u32 vref_1_1p6v; |
43 | u32 vref_0_1p6v; |
44 | }; |
45 | |
46 | struct type_c_cfg { |
47 | int parameter_ver; /* Parameter version */ |
48 | int cc_dfp_mode; |
49 | struct cc_param cc1_param; |
50 | struct cc_param cc2_param; |
51 | |
52 | u32 debounce_val; |
53 | bool use_defalut_parameter; |
54 | }; |
55 | |
56 | struct type_c_data { |
57 | void __iomem *reg_base; |
58 | struct device *dev; |
59 | struct extcon_dev *edev; |
60 | |
61 | u32 irq; |
62 | |
63 | /* rd control GPIO only for rtd1295 */ |
64 | struct gpio_desc *rd_ctrl_gpio_desc; |
65 | |
66 | /* Parameters */ |
67 | struct type_c_cfg *type_c_cfg; |
68 | u32 dfp_mode_rp_en; |
69 | u32 ufp_mode_rd_en; |
70 | u32 cc1_code; |
71 | u32 cc2_code; |
72 | u32 cc1_vref; |
73 | u32 cc2_vref; |
74 | u32 debounce; /* 1b,1us 7f,4.7us */ |
75 | |
76 | /* type_c state */ |
77 | int connect_change; |
78 | #define CONNECT_CHANGE 1 |
79 | #define CONNECT_NO_CHANGE 0 |
80 | int cc_mode; /* cc is host or device */ |
81 | #define IN_HOST_MODE 0x10 |
82 | #define IN_DEVICE_MODE 0x20 |
83 | int is_attach; |
84 | #define IN_ATTACH 1 |
85 | #define TO_ATTACH 1 |
86 | #define IN_DETACH 0 |
87 | #define TO_DETACH 0 |
88 | int at_cc1; |
89 | #define AT_CC1 1 |
90 | #define AT_CC2 0 |
91 | |
92 | u32 int_status; |
93 | u32 cc_status; |
94 | /* protect the data member */ |
95 | spinlock_t lock; |
96 | struct delayed_work delayed_work; |
97 | |
98 | bool rd_en_at_first; |
99 | |
100 | struct dentry *debug_dir; |
101 | |
102 | struct typec_port *port; |
103 | }; |
104 | |
105 | /* Type C register offset */ |
106 | #define USB_TYPEC_CTRL_CC1_0 0x0 |
107 | #define USB_TYPEC_CTRL_CC1_1 0x4 |
108 | #define USB_TYPEC_CTRL_CC2_0 0x8 |
109 | #define USB_TYPEC_CTRL_CC2_1 0xC |
110 | #define USB_TYPEC_STS 0x10 |
111 | #define USB_TYPEC_CTRL 0x14 |
112 | #define USB_DBUS_PWR_CTRL 0x18 |
113 | |
114 | #define ENABLE_CC1 0x1 |
115 | #define ENABLE_CC2 0x2 |
116 | #define DISABLE_CC 0x0 |
117 | |
118 | /* Bit mapping USB_TYPEC_CTRL_CC1_0 and USB_TYPEC_CTRL_CC2_0 */ |
119 | #define PLR_EN BIT(29) |
120 | #define CC_SWITCH_MASK (BIT(29) | BIT(28) | BIT(27)) |
121 | #define CC_CODE_MASK (0xfffff << 7) |
122 | #define rp4pk_code(val) ((0x1f & (val)) << 22) |
123 | #define code_rp4pk(val) (((val) >> 22) & 0x1f) |
124 | #define rp36k_code(val) ((0x1f & (val)) << 17) |
125 | #define code_rp36k(val) (((val) >> 17) & 0x1f) |
126 | #define rp12k_code(val) ((0x1f & (val)) << 12) |
127 | #define code_rp12k(val) (((val) >> 12) & 0x1f) |
128 | #define rd_code(val) ((0x1f & (val)) << 7) |
129 | #define code_rd(val) (((val) >> 7) & 0x1f) |
130 | #define dfp_mode(val) ((0x3 & (val)) << 5) |
131 | #define EN_RP4P7K BIT(4) |
132 | #define EN_RP36K BIT(3) |
133 | #define EN_RP12K BIT(2) |
134 | #define EN_RD BIT(1) |
135 | #define EN_CC_DET BIT(0) |
136 | |
137 | #define CC_MODE_UFP 0x0 |
138 | #define CC_MODE_DFP_USB 0x1 |
139 | #define CC_MODE_DFP_1_5 0x2 |
140 | #define CC_MODE_DFP_3_0 0x3 |
141 | |
142 | /* |
143 | * PARAMETER_V0: |
144 | * Realtek Kylin rtd1295 |
145 | * Realtek Hercules rtd1395 |
146 | * Realtek Thor rtd1619 |
147 | * Realtek Hank rtd1319 |
148 | * Realtek Groot rtd1312c |
149 | * PARAMETER_V1: |
150 | * Realtek Stark rtd1619b |
151 | * Realtek Parker rtd1319d |
152 | * Realtek Danvers rtd1315e |
153 | */ |
154 | enum parameter_version { |
155 | PARAMETER_V0 = 0, |
156 | PARAMETER_V1 = 1, |
157 | }; |
158 | |
159 | /* Bit mapping USB_TYPEC_CTRL_CC1_1 and USB_TYPEC_CTRL_CC2_1 */ |
160 | #define V0_vref_2p6v(val) ((0xf & (val)) << 26) /* Bit 29 for groot */ |
161 | #define V0_vref_1p23v(val) ((0xf & (val)) << 22) |
162 | #define V0_vref_0p8v(val) ((0xf & (val)) << 18) |
163 | #define V0_vref_0p66v(val) ((0xf & (val)) << 14) |
164 | #define V0_vref_0p4v(val) ((0x7 & (val)) << 11) |
165 | #define V0_vref_0p2v(val) ((0x7 & (val)) << 8) |
166 | #define V0_vref_1_1p6v(val) ((0xf & (val)) << 4) |
167 | #define V0_vref_0_1p6v(val) ((0xf & (val)) << 0) |
168 | |
169 | #define V0_decode_2p6v(val) (((val) >> 26) & 0xf) /* Bit 29 for groot */ |
170 | #define V0_decode_1p23v(val) (((val) >> 22) & 0xf) |
171 | #define V0_decode_0p8v(val) (((val) >> 18) & 0xf) |
172 | #define V0_decode_0p66v(val) (((val) >> 14) & 0xf) |
173 | #define V0_decode_0p4v(val) (((val) >> 11) & 0x7) |
174 | #define V0_decode_0p2v(val) (((val) >> 8) & 0x7) |
175 | #define V0_decode_1_1p6v(val) (((val) >> 4) & 0xf) |
176 | #define V0_decode_0_1p6v(val) (((val) >> 0) & 0xf) |
177 | |
178 | /* new Bit mapping USB_TYPEC_CTRL_CC1_1 and USB_TYPEC_CTRL_CC2_1 */ |
179 | #define V1_vref_2p6v(val) ((0xf & (val)) << 28) |
180 | #define V1_vref_1p23v(val) ((0xf & (val)) << 24) |
181 | #define V1_vref_0p8v(val) ((0xf & (val)) << 20) |
182 | #define V1_vref_0p66v(val) ((0xf & (val)) << 16) |
183 | #define V1_vref_0p4v(val) ((0xf & (val)) << 12) |
184 | #define V1_vref_0p2v(val) ((0xf & (val)) << 8) |
185 | #define V1_vref_1_1p6v(val) ((0xf & (val)) << 4) |
186 | #define V1_vref_0_1p6v(val) ((0xf & (val)) << 0) |
187 | |
188 | #define V1_decode_2p6v(val) (((val) >> 28) & 0xf) |
189 | #define V1_decode_1p23v(val) (((val) >> 24) & 0xf) |
190 | #define V1_decode_0p8v(val) (((val) >> 20) & 0xf) |
191 | #define V1_decode_0p66v(val) (((val) >> 16) & 0xf) |
192 | #define V1_decode_0p4v(val) (((val) >> 12) & 0xf) |
193 | #define V1_decode_0p2v(val) (((val) >> 8) & 0xf) |
194 | #define V1_decode_1_1p6v(val) (((val) >> 4) & 0xf) |
195 | #define V1_decode_0_1p6v(val) (((val) >> 0) & 0xf) |
196 | |
197 | /* Bit mapping USB_TYPEC_STS */ |
198 | #define DET_STS 0x7 |
199 | #define CC1_DET_STS (DET_STS) |
200 | #define CC2_DET_STS (DET_STS << 3) |
201 | #define DET_STS_RA 0x1 |
202 | #define DET_STS_RD 0x3 |
203 | #define DET_STS_RP 0x1 |
204 | #define CC1_DET_STS_RA (DET_STS_RA) |
205 | #define CC1_DET_STS_RD (DET_STS_RD) |
206 | #define CC1_DET_STS_RP (DET_STS_RP) |
207 | #define CC2_DET_STS_RA (DET_STS_RA << 3) |
208 | #define CC2_DET_STS_RD (DET_STS_RD << 3) |
209 | #define CC2_DET_STS_RP (DET_STS_RP << 3) |
210 | |
211 | /* Bit mapping USB_TYPEC_CTRL */ |
212 | #define CC2_INT_EN BIT(11) |
213 | #define CC1_INT_EN BIT(10) |
214 | #define CC2_INT_STS BIT(9) |
215 | #define CC1_INT_STS BIT(8) |
216 | #define DEBOUNCE_TIME_MASK 0xff |
217 | #define DEBOUNCE_EN BIT(0) |
218 | #define ENABLE_TYPE_C_DETECT (CC1_INT_EN | CC2_INT_EN) |
219 | #define ALL_CC_INT_STS (CC1_INT_STS | CC2_INT_STS) |
220 | |
221 | /* Parameter */ |
222 | #define DETECT_TIME 50 /* ms */ |
223 | |
224 | static const unsigned int usb_type_c_cable[] = { |
225 | EXTCON_USB, |
226 | EXTCON_USB_HOST, |
227 | EXTCON_NONE, |
228 | }; |
229 | |
230 | enum usb_data_roles { |
231 | DR_NONE, |
232 | DR_HOST, |
233 | DR_DEVICE, |
234 | }; |
235 | |
236 | static const struct soc_device_attribute rtk_soc_kylin[] = { |
237 | { .family = "Realtek Kylin" , }, |
238 | { /* empty */ } |
239 | }; |
240 | |
241 | static int rtd129x_switch_type_c_plug_config(struct type_c_data *type_c, |
242 | int dr_mode, int cc) |
243 | { |
244 | void __iomem *reg = type_c->reg_base + USB_TYPEC_CTRL_CC1_0; |
245 | int val_cc; |
246 | |
247 | #define TYPE_C_EN_SWITCH BIT(29) |
248 | #define TYPE_C_TXRX_SEL (BIT(28) | BIT(27)) |
249 | #define TYPE_C_SWITCH_MASK (TYPE_C_EN_SWITCH | TYPE_C_TXRX_SEL) |
250 | #define TYPE_C_ENABLE_CC1 TYPE_C_EN_SWITCH |
251 | #define TYPE_C_ENABLE_CC2 (TYPE_C_EN_SWITCH | TYPE_C_TXRX_SEL) |
252 | #define TYPE_C_DISABLE_CC ~TYPE_C_SWITCH_MASK |
253 | |
254 | val_cc = readl(addr: reg); |
255 | val_cc &= ~TYPE_C_SWITCH_MASK; |
256 | |
257 | if (cc == DISABLE_CC) { |
258 | val_cc &= TYPE_C_DISABLE_CC; |
259 | } else if (cc == ENABLE_CC1) { |
260 | val_cc |= TYPE_C_ENABLE_CC1; |
261 | } else if (cc == ENABLE_CC2) { |
262 | val_cc |= TYPE_C_ENABLE_CC2; |
263 | } else { |
264 | dev_err(type_c->dev, "%s: Error cc setting cc=0x%x\n" , __func__, cc); |
265 | return -EINVAL; |
266 | } |
267 | writel(val: val_cc, addr: reg); |
268 | |
269 | /* waiting cc stable for enable/disable */ |
270 | mdelay(1); |
271 | |
272 | dev_dbg(type_c->dev, "%s: cc=0x%x val_cc=0x%x usb_typec_ctrl_cc1_0=0x%x\n" , |
273 | __func__, cc, val_cc, readl(reg)); |
274 | |
275 | return 0; |
276 | } |
277 | |
278 | static inline void switch_type_c_plug_config(struct type_c_data *type_c, |
279 | int dr_mode, int cc) |
280 | { |
281 | int ret = 0; |
282 | |
283 | if (soc_device_match(matches: rtk_soc_kylin)) |
284 | ret = rtd129x_switch_type_c_plug_config(type_c, dr_mode, cc); |
285 | |
286 | if (ret < 0) |
287 | dev_err(type_c->dev, "%s: Error set type c plug config\n" , |
288 | __func__); |
289 | } |
290 | |
291 | static void switch_type_c_dr_mode(struct type_c_data *type_c, int dr_mode, int cc) |
292 | { |
293 | bool is_host = false; |
294 | bool is_device = false; |
295 | bool polarity = false; |
296 | bool vbus = false; |
297 | bool ss = true; |
298 | |
299 | switch_type_c_plug_config(type_c, dr_mode, cc); |
300 | if (cc == ENABLE_CC2) |
301 | polarity = true; |
302 | |
303 | switch (dr_mode) { |
304 | case USB_DR_MODE_HOST: |
305 | is_host = true; |
306 | break; |
307 | case USB_DR_MODE_PERIPHERAL: |
308 | is_device = true; |
309 | vbus = true; |
310 | break; |
311 | default: |
312 | dev_dbg(type_c->dev, "%s dr_mode=%d ==> no host or device\n" , |
313 | __func__, dr_mode); |
314 | break; |
315 | } |
316 | |
317 | dev_dbg(type_c->dev, "%s is_host=%d is_device=%d vbus=%d polarity=%d\n" , |
318 | __func__, is_host, is_device, vbus, polarity); |
319 | |
320 | /* for EXTCON_USB device mode */ |
321 | extcon_set_state(edev: type_c->edev, EXTCON_USB, state: is_device); |
322 | extcon_set_property(edev: type_c->edev, EXTCON_USB, |
323 | EXTCON_PROP_USB_VBUS, |
324 | prop_val: (union extcon_property_value)(int)vbus); |
325 | extcon_set_property(edev: type_c->edev, EXTCON_USB, |
326 | EXTCON_PROP_USB_TYPEC_POLARITY, |
327 | prop_val: (union extcon_property_value)(int)polarity); |
328 | extcon_set_property(edev: type_c->edev, EXTCON_USB, |
329 | EXTCON_PROP_USB_SS, |
330 | prop_val: (union extcon_property_value)(int)ss); |
331 | |
332 | /* for EXTCON_USB_HOST host mode */ |
333 | extcon_set_state(edev: type_c->edev, EXTCON_USB_HOST, state: is_host); |
334 | extcon_set_property(edev: type_c->edev, EXTCON_USB_HOST, |
335 | EXTCON_PROP_USB_VBUS, |
336 | prop_val: (union extcon_property_value)(int)vbus); |
337 | extcon_set_property(edev: type_c->edev, EXTCON_USB_HOST, |
338 | EXTCON_PROP_USB_TYPEC_POLARITY, |
339 | prop_val: (union extcon_property_value)(int)polarity); |
340 | extcon_set_property(edev: type_c->edev, EXTCON_USB_HOST, |
341 | EXTCON_PROP_USB_SS, |
342 | prop_val: (union extcon_property_value)(int)ss); |
343 | |
344 | /* sync EXTCON_USB and EXTCON_USB_HOST */ |
345 | extcon_sync(edev: type_c->edev, EXTCON_USB); |
346 | extcon_sync(edev: type_c->edev, EXTCON_USB_HOST); |
347 | |
348 | if (type_c->port) { |
349 | switch (dr_mode) { |
350 | case USB_DR_MODE_HOST: |
351 | typec_set_data_role(port: type_c->port, role: TYPEC_HOST); |
352 | typec_set_pwr_role(port: type_c->port, role: TYPEC_SOURCE); |
353 | break; |
354 | case USB_DR_MODE_PERIPHERAL: |
355 | typec_set_data_role(port: type_c->port, role: TYPEC_DEVICE); |
356 | typec_set_pwr_role(port: type_c->port, role: TYPEC_SINK); |
357 | break; |
358 | default: |
359 | dev_dbg(type_c->dev, "%s unknown dr_mode=%d\n" , |
360 | __func__, dr_mode); |
361 | break; |
362 | } |
363 | } |
364 | } |
365 | |
366 | /* connector attached/detached */ |
367 | static int connector_attached(struct type_c_data *type_c, u32 cc, int dr_mode) |
368 | { |
369 | void __iomem *reg = type_c->reg_base + USB_TYPEC_CTRL; |
370 | |
371 | cancel_delayed_work(dwork: &type_c->delayed_work); |
372 | |
373 | switch_type_c_dr_mode(type_c, dr_mode, cc); |
374 | |
375 | writel(ENABLE_TYPE_C_DETECT | readl(addr: reg), addr: reg); |
376 | |
377 | return 0; |
378 | } |
379 | |
380 | static int connector_detached(struct type_c_data *type_c, u32 cc, int dr_mode) |
381 | { |
382 | void __iomem *reg = type_c->reg_base + USB_TYPEC_CTRL; |
383 | |
384 | writel(val: ~ENABLE_TYPE_C_DETECT & readl(addr: reg), addr: reg); |
385 | |
386 | switch_type_c_dr_mode(type_c, dr_mode: 0, cc); |
387 | |
388 | schedule_delayed_work(dwork: &type_c->delayed_work, delay: msecs_to_jiffies(DETECT_TIME)); |
389 | |
390 | return 0; |
391 | } |
392 | |
393 | /* detect host device switch */ |
394 | static int __detect_host_device(struct type_c_data *type_c, u32 rp_or_rd_en) |
395 | { |
396 | struct device *dev = type_c->dev; |
397 | void __iomem *reg_base = type_c->reg_base; |
398 | u32 cc1_config, cc2_config, default_ctrl; |
399 | u32 cc1_switch = 0; |
400 | |
401 | default_ctrl = readl(addr: reg_base + USB_TYPEC_CTRL) & DEBOUNCE_TIME_MASK; |
402 | writel(val: default_ctrl, addr: reg_base + USB_TYPEC_CTRL); |
403 | |
404 | cc1_config = readl(addr: reg_base + USB_TYPEC_CTRL_CC1_0); |
405 | cc2_config = readl(addr: reg_base + USB_TYPEC_CTRL_CC2_0); |
406 | |
407 | cc1_config &= ~EN_CC_DET; |
408 | cc2_config &= ~EN_CC_DET; |
409 | writel(val: cc1_config, addr: reg_base + USB_TYPEC_CTRL_CC1_0); |
410 | writel(val: cc2_config, addr: reg_base + USB_TYPEC_CTRL_CC2_0); |
411 | |
412 | if (soc_device_match(matches: rtk_soc_kylin)) |
413 | cc1_switch = cc1_config & CC_SWITCH_MASK; |
414 | |
415 | cc1_config &= CC_CODE_MASK; |
416 | cc1_config |= rp_or_rd_en | cc1_switch; |
417 | cc2_config &= CC_CODE_MASK; |
418 | cc2_config |= rp_or_rd_en; |
419 | writel(val: cc2_config, addr: reg_base + USB_TYPEC_CTRL_CC2_0); |
420 | writel(val: cc1_config, addr: reg_base + USB_TYPEC_CTRL_CC1_0); |
421 | |
422 | /* For kylin to disable external rd control gpio */ |
423 | if (soc_device_match(matches: rtk_soc_kylin)) { |
424 | struct gpio_desc *gpio = type_c->rd_ctrl_gpio_desc; |
425 | |
426 | if (gpio && gpiod_direction_output(desc: gpio, value: 1)) |
427 | dev_err(dev, "%s ERROR set rd_ctrl_gpio_desc fail\n" , __func__); |
428 | } |
429 | |
430 | cc1_config |= EN_CC_DET; |
431 | cc2_config |= EN_CC_DET; |
432 | writel(val: cc1_config, addr: reg_base + USB_TYPEC_CTRL_CC1_0); |
433 | writel(val: cc2_config, addr: reg_base + USB_TYPEC_CTRL_CC2_0); |
434 | |
435 | return 0; |
436 | } |
437 | |
438 | static int detect_device(struct type_c_data *type_c) |
439 | { |
440 | return __detect_host_device(type_c, rp_or_rd_en: type_c->dfp_mode_rp_en); |
441 | } |
442 | |
443 | static int detect_host(struct type_c_data *type_c) |
444 | { |
445 | return __detect_host_device(type_c, rp_or_rd_en: type_c->ufp_mode_rd_en); |
446 | } |
447 | |
448 | static int host_device_switch_detection(struct type_c_data *type_c) |
449 | { |
450 | if (type_c->cc_mode == IN_HOST_MODE) { |
451 | type_c->cc_mode = IN_DEVICE_MODE; |
452 | detect_host(type_c); |
453 | } else { |
454 | type_c->cc_mode = IN_HOST_MODE; |
455 | detect_device(type_c); |
456 | } |
457 | |
458 | return 0; |
459 | } |
460 | |
461 | static int detect_type_c_state(struct type_c_data *type_c) |
462 | { |
463 | struct device *dev = type_c->dev; |
464 | void __iomem *reg_base = type_c->reg_base; |
465 | u32 int_status, cc_status, cc_status_check; |
466 | unsigned long flags; |
467 | |
468 | spin_lock_irqsave(&type_c->lock, flags); |
469 | |
470 | int_status = readl(addr: reg_base + USB_TYPEC_CTRL); |
471 | cc_status = readl(addr: reg_base + USB_TYPEC_STS); |
472 | |
473 | type_c->connect_change = CONNECT_NO_CHANGE; |
474 | |
475 | switch (type_c->cc_mode | type_c->is_attach) { |
476 | case IN_HOST_MODE | IN_ATTACH: |
477 | if (((cc_status & CC1_DET_STS) == CC1_DET_STS) && type_c->at_cc1 == AT_CC1) { |
478 | dev_dbg(dev, "IN host mode and cc1 device detach (cc_status=0x%x)" , |
479 | cc_status); |
480 | type_c->is_attach = TO_DETACH; |
481 | type_c->connect_change = CONNECT_CHANGE; |
482 | } else if (((cc_status & CC2_DET_STS) == CC2_DET_STS) && |
483 | type_c->at_cc1 == AT_CC2) { |
484 | dev_dbg(dev, "IN host mode and cc2 device detach (cc_status=0x%x)" , |
485 | cc_status); |
486 | type_c->is_attach = TO_DETACH; |
487 | type_c->connect_change = CONNECT_CHANGE; |
488 | } |
489 | break; |
490 | case IN_HOST_MODE | IN_DETACH: |
491 | cc_status_check = readl(addr: reg_base + USB_TYPEC_STS); |
492 | if (cc_status_check != (CC1_DET_STS | CC2_DET_STS)) { |
493 | if (in_interrupt()) { |
494 | /* Add delay time to avoid capacitive effect of cable. */ |
495 | mdelay(300); |
496 | } else { |
497 | spin_unlock_irqrestore(lock: &type_c->lock, flags); |
498 | /* Add delay time to avoid capacitive effect of cable. */ |
499 | msleep(msecs: 300); |
500 | spin_lock_irqsave(&type_c->lock, flags); |
501 | } |
502 | cc_status_check = readl(addr: reg_base + USB_TYPEC_STS); |
503 | } |
504 | if (cc_status != cc_status_check) { |
505 | dev_warn(dev, "IN_HOST_MODE: cc_status (0x%x) != cc_status_check (0x%x)\n" , |
506 | cc_status, cc_status_check); |
507 | cc_status = readl(addr: reg_base + USB_TYPEC_STS); |
508 | } |
509 | |
510 | if ((cc_status & CC1_DET_STS) == CC1_DET_STS_RD) { |
511 | dev_dbg(dev, "IN host mode and cc1 device attach (cc_status=0x%x)" , |
512 | cc_status); |
513 | type_c->is_attach = TO_ATTACH; |
514 | type_c->at_cc1 = AT_CC1; |
515 | type_c->connect_change = CONNECT_CHANGE; |
516 | } else if ((cc_status & CC2_DET_STS) == CC2_DET_STS_RD) { |
517 | dev_dbg(dev, "In host mode and cc2 device attach (cc_status=0x%x)" , |
518 | cc_status); |
519 | type_c->is_attach = TO_ATTACH; |
520 | type_c->at_cc1 = AT_CC2; |
521 | type_c->connect_change = CONNECT_CHANGE; |
522 | } |
523 | break; |
524 | case IN_DEVICE_MODE | IN_ATTACH: |
525 | if ((cc_status & CC1_DET_STS) < CC1_DET_STS_RP || |
526 | (cc_status & CC2_DET_STS) < CC2_DET_STS_RP) { |
527 | /* Add a sw debounce to filter cc signal sent from apple pd adapter */ |
528 | mdelay(5); |
529 | cc_status_check = readl(addr: reg_base + USB_TYPEC_STS); |
530 | |
531 | if (cc_status != cc_status_check) { |
532 | dev_dbg(dev, "IN_DEVICE_MODE: cc_status (0x%x) != cc_status_check (0x%x) maybe use a pd adapter\n" , |
533 | cc_status, cc_status_check); |
534 | cc_status = cc_status_check; |
535 | } |
536 | } |
537 | |
538 | if ((cc_status & CC1_DET_STS) < CC1_DET_STS_RP && type_c->at_cc1 == AT_CC1) { |
539 | dev_dbg(dev, "IN device mode and cc1 host disconnect (cc_status=0x%x)" , |
540 | cc_status); |
541 | type_c->is_attach = TO_DETACH; |
542 | type_c->connect_change = CONNECT_CHANGE; |
543 | } else if ((cc_status & CC2_DET_STS) < CC2_DET_STS_RP && |
544 | type_c->at_cc1 == AT_CC2) { |
545 | dev_dbg(dev, "IN device mode and cc2 host disconnect (cc_status=0x%x)" , |
546 | cc_status); |
547 | type_c->is_attach = TO_DETACH; |
548 | type_c->connect_change = CONNECT_CHANGE; |
549 | } |
550 | break; |
551 | case IN_DEVICE_MODE | IN_DETACH: |
552 | cc_status_check = readl(addr: reg_base + USB_TYPEC_STS); |
553 | if (cc_status_check != 0x0) { |
554 | if (in_interrupt()) { |
555 | /* Add delay time to avoid capacitive effect of cable. */ |
556 | mdelay(300); |
557 | } else { |
558 | spin_unlock_irqrestore(lock: &type_c->lock, flags); |
559 | /* Add delay time to avoid capacitive effect of cable. */ |
560 | msleep(msecs: 300); |
561 | spin_lock_irqsave(&type_c->lock, flags); |
562 | } |
563 | cc_status_check = readl(addr: reg_base + USB_TYPEC_STS); |
564 | } |
565 | |
566 | if (cc_status != cc_status_check) { |
567 | dev_warn(dev, "IN_DEVICE_MODE: cc_status (0x%x) != cc_status_check (0x%x)\n" , |
568 | cc_status, cc_status_check); |
569 | cc_status = readl(addr: reg_base + USB_TYPEC_STS); |
570 | } |
571 | |
572 | if ((cc_status & CC1_DET_STS) >= CC1_DET_STS_RP) { |
573 | dev_dbg(dev, "IN device mode and cc1 host connect (cc_status=0x%x)" , |
574 | cc_status); |
575 | type_c->at_cc1 = AT_CC1; |
576 | type_c->is_attach = TO_ATTACH; |
577 | type_c->connect_change = CONNECT_CHANGE; |
578 | } else if ((cc_status & CC2_DET_STS) >= CC2_DET_STS_RP) { |
579 | dev_dbg(dev, "IN device mode and cc2 host connect (cc_status=0x%x)" , |
580 | cc_status); |
581 | type_c->at_cc1 = AT_CC2; |
582 | type_c->is_attach = TO_ATTACH; |
583 | type_c->connect_change = CONNECT_CHANGE; |
584 | } |
585 | break; |
586 | default: |
587 | dev_err(dev, "error host or device mode (cc_mode=%d, is_attach=%d) " , |
588 | type_c->cc_mode, type_c->is_attach); |
589 | } |
590 | |
591 | type_c->int_status = int_status; |
592 | type_c->cc_status = cc_status; |
593 | |
594 | spin_unlock_irqrestore(lock: &type_c->lock, flags); |
595 | return 0; |
596 | } |
597 | |
598 | static void host_device_switch(struct work_struct *work) |
599 | { |
600 | struct type_c_data *type_c = container_of(work, struct type_c_data, |
601 | delayed_work.work); |
602 | struct device *dev = type_c->dev; |
603 | unsigned long flags; |
604 | int connect_change = 0; |
605 | int cc_mode = 0; |
606 | int is_attach = 0; |
607 | int at_cc1 = 0; |
608 | |
609 | spin_lock_irqsave(&type_c->lock, flags); |
610 | if (type_c->connect_change) |
611 | connect_change = type_c->connect_change; |
612 | spin_unlock_irqrestore(lock: &type_c->lock, flags); |
613 | |
614 | if (!connect_change) |
615 | detect_type_c_state(type_c); |
616 | |
617 | spin_lock_irqsave(&type_c->lock, flags); |
618 | if (type_c->connect_change) { |
619 | connect_change = type_c->connect_change; |
620 | cc_mode = type_c->cc_mode; |
621 | is_attach = type_c->is_attach; |
622 | at_cc1 = type_c->at_cc1; |
623 | type_c->connect_change = CONNECT_NO_CHANGE; |
624 | } else { |
625 | host_device_switch_detection(type_c); |
626 | |
627 | schedule_delayed_work(dwork: &type_c->delayed_work, delay: msecs_to_jiffies(DETECT_TIME)); |
628 | } |
629 | spin_unlock_irqrestore(lock: &type_c->lock, flags); |
630 | |
631 | if (!connect_change) |
632 | return; |
633 | |
634 | dev_dbg(dev, "%s: usb cable connection change\n" , __func__); |
635 | if (cc_mode == IN_HOST_MODE) { |
636 | if (is_attach && at_cc1) |
637 | connector_attached(type_c, ENABLE_CC1, dr_mode: USB_DR_MODE_HOST); |
638 | else if (is_attach && !at_cc1) |
639 | connector_attached(type_c, ENABLE_CC2, dr_mode: USB_DR_MODE_HOST); |
640 | else |
641 | connector_detached(type_c, DISABLE_CC, dr_mode: USB_DR_MODE_HOST); |
642 | } else if (cc_mode == IN_DEVICE_MODE) { |
643 | if (is_attach && at_cc1) |
644 | connector_attached(type_c, ENABLE_CC1, dr_mode: USB_DR_MODE_PERIPHERAL); |
645 | else if (is_attach && !at_cc1) |
646 | connector_attached(type_c, ENABLE_CC2, dr_mode: USB_DR_MODE_PERIPHERAL); |
647 | else |
648 | connector_detached(type_c, DISABLE_CC, dr_mode: USB_DR_MODE_PERIPHERAL); |
649 | } else { |
650 | dev_err(dev, "Error: IN unknown mode %d to %s at %s (cc_status=0x%x)\n" , |
651 | cc_mode, is_attach ? "attach" : "detach" , |
652 | at_cc1 ? "cc1" : "cc2" , type_c->cc_status); |
653 | } |
654 | dev_info(dev, "Connection change OK: IN %s mode to %s at %s (cc_status=0x%x)\n" , |
655 | cc_mode == IN_HOST_MODE ? "host" : "device" , |
656 | is_attach ? "attach" : "detach" , |
657 | at_cc1 ? "cc1" : "cc2" , type_c->cc_status); |
658 | } |
659 | |
660 | static irqreturn_t type_c_detect_irq(int irq, void *__data) |
661 | { |
662 | struct type_c_data *type_c = (struct type_c_data *)__data; |
663 | struct device *dev = type_c->dev; |
664 | void __iomem *reg = type_c->reg_base + USB_TYPEC_CTRL; |
665 | unsigned long flags; |
666 | |
667 | detect_type_c_state(type_c); |
668 | |
669 | spin_lock_irqsave(&type_c->lock, flags); |
670 | |
671 | if (type_c->connect_change) { |
672 | dev_dbg(dev, "%s: IN %s mode to %s (at %s interrupt) int_status=0x%x, cc_status=0x%x" , |
673 | __func__, |
674 | type_c->cc_mode == IN_HOST_MODE ? "host" : "device" , |
675 | type_c->is_attach ? "attach" : "detach" , |
676 | type_c->at_cc1 ? "cc1" : "cc2" , |
677 | type_c->int_status, type_c->cc_status); |
678 | |
679 | /* clear interrupt status */ |
680 | writel(val: ~ALL_CC_INT_STS & readl(addr: reg), addr: reg); |
681 | |
682 | cancel_delayed_work(dwork: &type_c->delayed_work); |
683 | schedule_delayed_work(dwork: &type_c->delayed_work, delay: msecs_to_jiffies(m: 0)); |
684 | } else { |
685 | static int local_count; |
686 | |
687 | /* if no connect_change, we keep the status to avoid status lose */ |
688 | if (local_count++ > 10) { |
689 | /* clear interrupt status */ |
690 | writel(val: ~ALL_CC_INT_STS & readl(addr: reg), addr: reg); |
691 | local_count = 0; |
692 | } |
693 | } |
694 | |
695 | spin_unlock_irqrestore(lock: &type_c->lock, flags); |
696 | |
697 | return IRQ_HANDLED; |
698 | } |
699 | |
700 | static int type_c_port_dr_set(struct typec_port *port, |
701 | enum typec_data_role role) |
702 | { |
703 | struct type_c_data *type_c = typec_get_drvdata(port); |
704 | u32 enable_cc; |
705 | unsigned long flags; |
706 | |
707 | spin_lock_irqsave(&type_c->lock, flags); |
708 | enable_cc = type_c->at_cc1 ? ENABLE_CC1 : ENABLE_CC2; |
709 | spin_unlock_irqrestore(lock: &type_c->lock, flags); |
710 | |
711 | if (role == TYPEC_HOST) |
712 | switch_type_c_dr_mode(type_c, dr_mode: USB_DR_MODE_HOST, cc: enable_cc); |
713 | else if (role == TYPEC_DEVICE) |
714 | switch_type_c_dr_mode(type_c, dr_mode: USB_DR_MODE_PERIPHERAL, cc: enable_cc); |
715 | else |
716 | switch_type_c_dr_mode(type_c, dr_mode: 0, DISABLE_CC); |
717 | |
718 | return 0; |
719 | } |
720 | |
721 | static const struct typec_operations type_c_port_ops = { |
722 | .dr_set = type_c_port_dr_set, |
723 | }; |
724 | |
725 | #ifdef CONFIG_DEBUG_FS |
726 | static int type_c_parameter_show(struct seq_file *s, void *unused) |
727 | { |
728 | struct type_c_data *type_c = s->private; |
729 | struct type_c_cfg *type_c_cfg = type_c->type_c_cfg; |
730 | struct cc_param *cc_param; |
731 | unsigned long flags; |
732 | |
733 | spin_lock_irqsave(&type_c->lock, flags); |
734 | |
735 | seq_printf(m: s, fmt: "cc_dfp_mode %s\n" , |
736 | ({ char *tmp; |
737 | switch (type_c_cfg->cc_dfp_mode) { |
738 | case CC_MODE_DFP_USB: |
739 | tmp = "CC_MODE_DFP_USB" ; break; |
740 | case CC_MODE_DFP_1_5: |
741 | tmp = "CC_MODE_DFP_1_5" ; break; |
742 | case CC_MODE_DFP_3_0: |
743 | tmp = "CC_MODE_DFP_3_0" ; break; |
744 | default: |
745 | tmp = "?" ; break; |
746 | } tmp; })); |
747 | |
748 | seq_printf(m: s, fmt: "dfp_mode_rp_en 0x%x\n" , type_c->dfp_mode_rp_en); |
749 | seq_printf(m: s, fmt: "ufp_mode_rd_en 0x%x\n" , type_c->ufp_mode_rd_en); |
750 | seq_printf(m: s, fmt: "cc1_code 0x%x\n" , type_c->cc1_code); |
751 | seq_printf(m: s, fmt: "cc2_code 0x%x\n" , type_c->cc2_code); |
752 | seq_printf(m: s, fmt: "cc1_vref 0x%x\n" , type_c->cc1_vref); |
753 | seq_printf(m: s, fmt: "cc2_vref 0x%x\n" , type_c->cc2_vref); |
754 | seq_printf(m: s, fmt: "debounce 0x%x\n" , type_c->debounce); |
755 | seq_puts(m: s, s: "\n" ); |
756 | |
757 | cc_param = &type_c_cfg->cc1_param; |
758 | seq_puts(m: s, s: "cc1_param:\n" ); |
759 | seq_printf(m: s, fmt: " rp_4p7k_code 0x%x\n" , cc_param->rp_4p7k_code); |
760 | seq_printf(m: s, fmt: " rp_36k_code 0x%x\n" , cc_param->rp_36k_code); |
761 | seq_printf(m: s, fmt: " rp_12k_code 0x%x\n" , cc_param->rp_12k_code); |
762 | seq_printf(m: s, fmt: " rd_code 0x%x\n" , cc_param->rd_code); |
763 | seq_printf(m: s, fmt: " vref_2p6v 0x%x\n" , cc_param->vref_2p6v); |
764 | seq_printf(m: s, fmt: " vref_1p23v 0x%x\n" , cc_param->vref_1p23v); |
765 | seq_printf(m: s, fmt: " vref_0p8v 0x%x\n" , cc_param->vref_0p8v); |
766 | seq_printf(m: s, fmt: " vref_0p66v 0x%x\n" , cc_param->vref_0p66v); |
767 | seq_printf(m: s, fmt: " vref_0p4v 0x%x\n" , cc_param->vref_0p4v); |
768 | seq_printf(m: s, fmt: " vref_0p2v 0x%x\n" , cc_param->vref_0p2v); |
769 | seq_printf(m: s, fmt: " vref_1_1p6v 0x%x\n" , cc_param->vref_1_1p6v); |
770 | seq_printf(m: s, fmt: " vref_0_1p6v 0x%x\n" , cc_param->vref_0_1p6v); |
771 | |
772 | cc_param = &type_c_cfg->cc2_param; |
773 | seq_puts(m: s, s: "cc2_param:\n" ); |
774 | seq_printf(m: s, fmt: " rp_4p7k_code 0x%x\n" , cc_param->rp_4p7k_code); |
775 | seq_printf(m: s, fmt: " rp_36k_code 0x%x\n" , cc_param->rp_36k_code); |
776 | seq_printf(m: s, fmt: " rp_12k_code 0x%x\n" , cc_param->rp_12k_code); |
777 | seq_printf(m: s, fmt: " rd_code 0x%x\n" , cc_param->rd_code); |
778 | seq_printf(m: s, fmt: " vref_2p6v 0x%x\n" , cc_param->vref_2p6v); |
779 | seq_printf(m: s, fmt: " vref_1p23v 0x%x\n" , cc_param->vref_1p23v); |
780 | seq_printf(m: s, fmt: " vref_0p8v 0x%x\n" , cc_param->vref_0p8v); |
781 | seq_printf(m: s, fmt: " vref_0p66v 0x%x\n" , cc_param->vref_0p66v); |
782 | seq_printf(m: s, fmt: " vref_0p4v 0x%x\n" , cc_param->vref_0p4v); |
783 | seq_printf(m: s, fmt: " vref_0p2v 0x%x\n" , cc_param->vref_0p2v); |
784 | seq_printf(m: s, fmt: " vref_1_1p6v 0x%x\n" , cc_param->vref_1_1p6v); |
785 | seq_printf(m: s, fmt: " vref_0_1p6v 0x%x\n" , cc_param->vref_0_1p6v); |
786 | |
787 | spin_unlock_irqrestore(lock: &type_c->lock, flags); |
788 | |
789 | return 0; |
790 | } |
791 | |
792 | static int type_c_parameter_open(struct inode *inode, struct file *file) |
793 | { |
794 | return single_open(file, type_c_parameter_show, inode->i_private); |
795 | } |
796 | |
797 | static const struct file_operations type_c_parameter_fops = { |
798 | .open = type_c_parameter_open, |
799 | .read = seq_read, |
800 | .llseek = seq_lseek, |
801 | .release = single_release, |
802 | }; |
803 | |
804 | static int type_c_status_show(struct seq_file *s, void *unused) |
805 | { |
806 | struct type_c_data *type_c = s->private; |
807 | unsigned long flags; |
808 | |
809 | spin_lock_irqsave(&type_c->lock, flags); |
810 | |
811 | seq_printf(m: s, fmt: "In %s mode %s at %s (cc_status=0x%x)\n" , |
812 | type_c->cc_mode == IN_HOST_MODE ? "host" : "device" , |
813 | type_c->is_attach ? "attach" : "detach" , |
814 | type_c->at_cc1 ? "cc1" : "cc2" , type_c->cc_status); |
815 | |
816 | seq_printf(m: s, fmt: "Read Register (type_c_ctrl_cc1_0=0x%x)\n" , |
817 | readl(addr: type_c->reg_base + 0x0)); |
818 | seq_printf(m: s, fmt: "Read Register (type_c_ctrl_cc1_1=0x%x)\n" , |
819 | readl(addr: type_c->reg_base + 0x4)); |
820 | seq_printf(m: s, fmt: "Read Register (type_c_ctrl_cc2_0=0x%x)\n" , |
821 | readl(addr: type_c->reg_base + 0x8)); |
822 | seq_printf(m: s, fmt: "Read Register (type_c_ctrl_cc2_1=0x%x)\n" , |
823 | readl(addr: type_c->reg_base + 0xc)); |
824 | seq_printf(m: s, fmt: "Read Register (type_c_status=0x%x)\n" , |
825 | readl(addr: type_c->reg_base + 0x10)); |
826 | seq_printf(m: s, fmt: "Read Register (type_c_ctrl=0x%x)\n" , |
827 | readl(addr: type_c->reg_base + 0x14)); |
828 | |
829 | spin_unlock_irqrestore(lock: &type_c->lock, flags); |
830 | |
831 | return 0; |
832 | } |
833 | |
834 | static int type_c_status_open(struct inode *inode, struct file *file) |
835 | { |
836 | return single_open(file, type_c_status_show, inode->i_private); |
837 | } |
838 | |
839 | static const struct file_operations type_c_status_fops = { |
840 | .open = type_c_status_open, |
841 | .read = seq_read, |
842 | .llseek = seq_lseek, |
843 | .release = single_release, |
844 | }; |
845 | |
846 | static inline void create_debug_files(struct type_c_data *type_c) |
847 | { |
848 | type_c->debug_dir = debugfs_create_dir(name: "type_c" , parent: usb_debug_root); |
849 | |
850 | debugfs_create_file(name: "parameter" , mode: 0444, parent: type_c->debug_dir, data: type_c, |
851 | fops: &type_c_parameter_fops); |
852 | |
853 | debugfs_create_file(name: "status" , mode: 0444, parent: type_c->debug_dir, data: type_c, |
854 | fops: &type_c_status_fops); |
855 | } |
856 | |
857 | static inline void remove_debug_files(struct type_c_data *type_c) |
858 | { |
859 | debugfs_remove_recursive(dentry: type_c->debug_dir); |
860 | } |
861 | #else |
862 | static inline void create_debug_files(struct type_c_data *type_c) { } |
863 | static inline void remove_debug_files(struct type_c_data *type_c) { } |
864 | #endif /* CONFIG_DEBUG_FS */ |
865 | |
866 | /* Init and probe */ |
867 | |
868 | static inline s8 get_value(s8 value) |
869 | { |
870 | return (((s8)value & 0x8) ? (-(s8)(0x7 & value)) : ((s8)(value))); |
871 | } |
872 | |
873 | static int __updated_type_c_parameter_by_efuse(struct type_c_data *type_c) |
874 | { |
875 | struct type_c_cfg *type_c_cfg = type_c->type_c_cfg; |
876 | struct cc_param *cc_param; |
877 | struct nvmem_cell *cell; |
878 | s8 cc1_4p7k = 0; |
879 | s8 cc1_12k = 0; |
880 | s8 cc1_0p2v = 0; |
881 | s8 cc1_0p8v = 0; |
882 | s8 cc1_2p6v = 0; |
883 | s8 cc1_0p66v = 0; |
884 | s8 cc1_1p23v = 0; |
885 | s8 cc2_4p7k = 0; |
886 | s8 cc2_12k = 0; |
887 | s8 cc2_0p2v = 0; |
888 | s8 cc2_0p8v = 0; |
889 | s8 cc2_2p6v = 0; |
890 | s8 cc2_0p66v = 0; |
891 | s8 cc2_1p23v = 0; |
892 | |
893 | cell = nvmem_cell_get(dev: type_c->dev, id: "usb-cal" ); |
894 | if (IS_ERR(ptr: cell)) { |
895 | dev_warn(type_c->dev, "%s failed to get usb-cal: %ld\n" , |
896 | __func__, PTR_ERR(cell)); |
897 | } else { |
898 | unsigned char *buf; |
899 | size_t buf_size; |
900 | int value_size = 4; |
901 | int value_mask = (BIT(value_size) - 1); |
902 | |
903 | buf = nvmem_cell_read(cell, len: &buf_size); |
904 | if (!IS_ERR(ptr: buf)) { |
905 | cc1_0p2v = get_value(value: (buf[0] >> value_size * 0) & value_mask); |
906 | cc1_0p8v = get_value(value: (buf[0] >> value_size * 1) & value_mask); |
907 | cc1_2p6v = get_value(value: (buf[1] >> value_size * 0) & value_mask); |
908 | cc1_0p66v = get_value(value: (buf[1] >> value_size * 1) & value_mask); |
909 | cc1_1p23v = get_value(value: (buf[2] >> value_size * 0) & value_mask); |
910 | |
911 | cc2_0p2v = get_value(value: (buf[3] >> value_size * 0) & value_mask); |
912 | cc2_0p8v = get_value(value: (buf[3] >> value_size * 1) & value_mask); |
913 | cc2_2p6v = get_value(value: (buf[4] >> value_size * 0) & value_mask); |
914 | cc2_0p66v = get_value(value: (buf[4] >> value_size * 1) & value_mask); |
915 | cc2_1p23v = get_value(value: (buf[5] >> value_size * 0) & value_mask); |
916 | |
917 | cc1_4p7k = get_value(value: (buf[6] >> value_size * 0) & value_mask); |
918 | cc1_12k = get_value(value: (buf[6] >> value_size * 1) & value_mask); |
919 | cc2_4p7k = get_value(value: (buf[7] >> value_size * 0) & value_mask); |
920 | cc2_12k = get_value(value: (buf[7] >> value_size * 1) & value_mask); |
921 | |
922 | kfree(objp: buf); |
923 | } |
924 | nvmem_cell_put(cell); |
925 | } |
926 | |
927 | dev_dbg(type_c->dev, "check efuse cc1_4p7k=%d cc1_12k=%d cc2_4p7k=%d cc2_12k=%d\n" , |
928 | cc1_4p7k, cc1_12k, cc2_4p7k, cc2_12k); |
929 | dev_dbg(type_c->dev, "check efuse cc1_0p2v=%d cc1_0p8v=%d cc1_2p6v=%d cc1_0p66v=%d cc1_1p23v=%d\n" , |
930 | cc1_0p2v, cc1_0p8v, cc1_2p6v, cc1_0p66v, cc1_1p23v); |
931 | dev_dbg(type_c->dev, "check efuse cc2_0p2v=%d cc2_0p8v=%d cc2_2p6v=%d cc2_0p66v=%d cc2_1p23v=%d\n" , |
932 | cc2_0p2v, cc2_0p8v, cc2_2p6v, cc2_0p66v, cc2_1p23v); |
933 | |
934 | cc_param = &type_c_cfg->cc1_param; |
935 | cc_param->rp_4p7k_code = cc_param->rp_4p7k_code + cc1_4p7k; |
936 | cc_param->rp_12k_code = cc_param->rp_12k_code + cc1_12k; |
937 | |
938 | cc_param->vref_1p23v = cc_param->vref_1p23v + cc1_1p23v; |
939 | cc_param->vref_0p66v = cc_param->vref_0p66v + cc1_0p66v; |
940 | cc_param->vref_2p6v = cc_param->vref_2p6v + cc1_2p6v; |
941 | cc_param->vref_0p8v = cc_param->vref_0p8v + cc1_0p8v; |
942 | cc_param->vref_0p2v = cc_param->vref_0p2v + cc1_0p2v; |
943 | |
944 | cc_param = &type_c_cfg->cc2_param; |
945 | cc_param->rp_4p7k_code = cc_param->rp_4p7k_code + cc2_4p7k; |
946 | cc_param->rp_12k_code = cc_param->rp_12k_code + cc2_12k; |
947 | |
948 | cc_param->vref_1p23v = cc_param->vref_1p23v + cc2_1p23v; |
949 | cc_param->vref_0p66v = cc_param->vref_0p66v + cc2_0p66v; |
950 | cc_param->vref_2p6v = cc_param->vref_2p6v + cc2_2p6v; |
951 | cc_param->vref_0p8v = cc_param->vref_0p8v + cc2_0p8v; |
952 | cc_param->vref_0p2v = cc_param->vref_0p2v + cc2_0p2v; |
953 | |
954 | return 0; |
955 | } |
956 | |
957 | static int __updated_type_c_parameter_by_efuse_v2(struct type_c_data *type_c) |
958 | { |
959 | struct type_c_cfg *type_c_cfg = type_c->type_c_cfg; |
960 | struct cc_param *cc_param; |
961 | struct nvmem_cell *cell; |
962 | s8 cc1_4p7k = 0; |
963 | s8 cc1_12k = 0; |
964 | s8 cc1_0p2v = 0; |
965 | s8 cc1_0p8v = 0; |
966 | s8 cc1_2p6v = 0; |
967 | s8 cc1_0p66v = 0; |
968 | s8 cc1_1p23v = 0; |
969 | s8 cc2_4p7k = 0; |
970 | s8 cc2_12k = 0; |
971 | s8 cc2_0p2v = 0; |
972 | s8 cc2_0p8v = 0; |
973 | s8 cc2_2p6v = 0; |
974 | s8 cc2_0p66v = 0; |
975 | s8 cc2_1p23v = 0; |
976 | |
977 | cell = nvmem_cell_get(dev: type_c->dev, id: "usb-type-c-cal" ); |
978 | if (IS_ERR(ptr: cell)) { |
979 | dev_warn(type_c->dev, "%s failed to get usb-type-c-cal: %ld\n" , |
980 | __func__, PTR_ERR(cell)); |
981 | } else { |
982 | unsigned char *buf; |
983 | size_t buf_size; |
984 | int value_size = 0; |
985 | int value_mask = (BIT(value_size) - 1); |
986 | |
987 | buf = nvmem_cell_read(cell, len: &buf_size); |
988 | if (!IS_ERR(ptr: buf)) { |
989 | value_size = 5; |
990 | value_mask = (BIT(value_size) - 1); |
991 | cc1_4p7k = buf[0] & value_mask; |
992 | cc1_12k = buf[1] & value_mask; |
993 | cc2_4p7k = buf[2] & value_mask; |
994 | cc2_12k = buf[3] & value_mask; |
995 | |
996 | value_size = 4; |
997 | value_mask = (BIT(value_size) - 1); |
998 | cc1_0p2v = (buf[4] >> value_size * 0) & value_mask; |
999 | cc1_0p66v = (buf[4] >> value_size * 1) & value_mask; |
1000 | cc1_0p8v = (buf[5] >> value_size * 0) & value_mask; |
1001 | cc1_1p23v = (buf[5] >> value_size * 1) & value_mask; |
1002 | cc1_2p6v = (buf[6] >> value_size * 0) & value_mask; |
1003 | |
1004 | cc2_0p2v = (buf[6] >> value_size * 1) & value_mask; |
1005 | cc2_0p66v = (buf[7] >> value_size * 0) & value_mask; |
1006 | cc2_0p8v = (buf[7] >> value_size * 1) & value_mask; |
1007 | cc2_1p23v = (buf[8] >> value_size * 0) & value_mask; |
1008 | cc2_2p6v = (buf[8] >> value_size * 1) & value_mask; |
1009 | |
1010 | kfree(objp: buf); |
1011 | } |
1012 | nvmem_cell_put(cell); |
1013 | } |
1014 | |
1015 | dev_dbg(type_c->dev, "check efuse v2 cc1_4p7k=%d cc1_12k=%d cc2_4p7k=%d cc2_12k=%d\n" , |
1016 | cc1_4p7k, cc1_12k, cc2_4p7k, cc2_12k); |
1017 | dev_dbg(type_c->dev, "check efuse v2 cc1_0p2v=%d cc1_0p8v=%d cc1_2p6v=%d cc1_0p66v=%d cc1_1p23v=%d\n" , |
1018 | cc1_0p2v, cc1_0p8v, cc1_2p6v, cc1_0p66v, cc1_1p23v); |
1019 | dev_dbg(type_c->dev, "check efuse v2 cc2_0p2v=%d cc2_0p8v=%d cc2_2p6v=%d cc2_0p66v=%d cc2_1p23v=%d\n" , |
1020 | cc2_0p2v, cc2_0p8v, cc2_2p6v, cc2_0p66v, cc2_1p23v); |
1021 | |
1022 | cc_param = &type_c_cfg->cc1_param; |
1023 | if (cc1_4p7k) |
1024 | cc_param->rp_4p7k_code = cc1_4p7k; |
1025 | if (cc1_12k) |
1026 | cc_param->rp_12k_code = cc1_12k; |
1027 | |
1028 | if (cc1_1p23v) |
1029 | cc_param->vref_1p23v = cc1_1p23v; |
1030 | if (cc1_0p66v) |
1031 | cc_param->vref_0p66v = cc1_0p66v; |
1032 | if (cc1_2p6v) |
1033 | cc_param->vref_2p6v = cc1_2p6v; |
1034 | if (cc1_0p8v) |
1035 | cc_param->vref_0p8v = cc1_0p8v; |
1036 | if (cc1_0p2v) |
1037 | cc_param->vref_0p2v = cc1_0p2v; |
1038 | |
1039 | cc_param = &type_c_cfg->cc2_param; |
1040 | if (cc2_4p7k) |
1041 | cc_param->rp_4p7k_code = cc2_4p7k; |
1042 | if (cc2_12k) |
1043 | cc_param->rp_12k_code = cc2_12k; |
1044 | |
1045 | if (cc2_1p23v) |
1046 | cc_param->vref_1p23v = cc2_1p23v; |
1047 | if (cc2_0p66v) |
1048 | cc_param->vref_0p66v = cc2_0p66v; |
1049 | if (cc2_2p6v) |
1050 | cc_param->vref_2p6v = cc2_2p6v; |
1051 | if (cc2_0p8v) |
1052 | cc_param->vref_0p8v = cc2_0p8v; |
1053 | if (cc2_0p2v) |
1054 | cc_param->vref_0p2v = cc2_0p2v; |
1055 | |
1056 | return 0; |
1057 | } |
1058 | |
1059 | static void get_default_type_c_parameter(struct type_c_data *type_c) |
1060 | { |
1061 | void __iomem *reg; |
1062 | int val; |
1063 | |
1064 | type_c->dfp_mode_rp_en = dfp_mode(CC_MODE_DFP_3_0) | EN_RP4P7K; |
1065 | type_c->ufp_mode_rd_en = EN_RD; |
1066 | |
1067 | reg = type_c->reg_base + USB_TYPEC_CTRL_CC1_0; |
1068 | val = readl(addr: reg); |
1069 | type_c->cc1_code = CC_CODE_MASK & val; |
1070 | |
1071 | reg = type_c->reg_base + USB_TYPEC_CTRL_CC2_0; |
1072 | val = readl(addr: reg); |
1073 | type_c->cc2_code = CC_CODE_MASK & val; |
1074 | |
1075 | reg = type_c->reg_base + USB_TYPEC_CTRL_CC1_1; |
1076 | val = readl(addr: reg); |
1077 | type_c->cc1_vref = val; |
1078 | |
1079 | reg = type_c->reg_base + USB_TYPEC_CTRL_CC2_1; |
1080 | val = readl(addr: reg); |
1081 | type_c->cc2_vref = val; |
1082 | |
1083 | reg = type_c->reg_base + USB_TYPEC_CTRL; |
1084 | val = readl(addr: reg); |
1085 | type_c->debounce = DEBOUNCE_TIME_MASK & val; |
1086 | } |
1087 | |
1088 | static int setup_type_c_parameter(struct type_c_data *type_c) |
1089 | { |
1090 | struct type_c_cfg *type_c_cfg = type_c->type_c_cfg; |
1091 | struct cc_param *cc_param; |
1092 | struct soc_device_attribute rtk_soc_efuse_v1[] = { |
1093 | { .family = "Realtek Phoenix" ,}, |
1094 | { .family = "Realtek Kylin" ,}, |
1095 | { .family = "Realtek Hercules" ,}, |
1096 | { .family = "Realtek Thor" ,}, |
1097 | { .family = "Realtek Hank" ,}, |
1098 | { .family = "Realtek Groot" ,}, |
1099 | { .family = "Realtek Stark" ,}, |
1100 | { .family = "Realtek Parker" ,}, |
1101 | { /* empty */ } |
1102 | }; |
1103 | |
1104 | if (type_c_cfg->use_defalut_parameter) { |
1105 | get_default_type_c_parameter(type_c); |
1106 | return 0; |
1107 | } |
1108 | |
1109 | if (soc_device_match(matches: rtk_soc_efuse_v1)) |
1110 | __updated_type_c_parameter_by_efuse(type_c); |
1111 | else |
1112 | __updated_type_c_parameter_by_efuse_v2(type_c); |
1113 | |
1114 | /* |
1115 | * UFP rd vref_ufp : 1p23v, 0p66v, 0p2v |
1116 | * DFP_USB rp36k vref_dfp_usb: 0_1p6v, 0p2v, unused |
1117 | * DFP_1.5 rp12k vref_dfp_1_5: 1_1p6v, 0p4v, 0p2v |
1118 | * DFP_3.0 rp4p7k vref_dfp_3_0: 2p6v, 0p8v, 0p2v |
1119 | */ |
1120 | |
1121 | switch (type_c_cfg->cc_dfp_mode) { |
1122 | case CC_MODE_DFP_USB: |
1123 | type_c->dfp_mode_rp_en = dfp_mode(CC_MODE_DFP_USB) | EN_RP36K; |
1124 | break; |
1125 | case CC_MODE_DFP_1_5: |
1126 | type_c->dfp_mode_rp_en = dfp_mode(CC_MODE_DFP_1_5) | EN_RP12K; |
1127 | break; |
1128 | case CC_MODE_DFP_3_0: |
1129 | type_c->dfp_mode_rp_en = dfp_mode(CC_MODE_DFP_3_0) | EN_RP4P7K; |
1130 | break; |
1131 | default: |
1132 | dev_err(type_c->dev, "%s: unknown cc_dfp_mode %d\n" , |
1133 | __func__, type_c_cfg->cc_dfp_mode); |
1134 | } |
1135 | |
1136 | type_c->ufp_mode_rd_en = EN_RD; |
1137 | |
1138 | cc_param = &type_c_cfg->cc1_param; |
1139 | type_c->cc1_code = rp4pk_code(cc_param->rp_4p7k_code) | |
1140 | rp36k_code(cc_param->rp_36k_code) | |
1141 | rp12k_code(cc_param->rp_12k_code) | |
1142 | rd_code(cc_param->rd_code); |
1143 | |
1144 | if (type_c_cfg->parameter_ver == PARAMETER_V0) |
1145 | type_c->cc1_vref = V0_vref_2p6v(cc_param->vref_2p6v) | |
1146 | V0_vref_1p23v(cc_param->vref_1p23v) | |
1147 | V0_vref_0p8v(cc_param->vref_0p8v) | |
1148 | V0_vref_0p66v(cc_param->vref_0p66v) | |
1149 | V0_vref_0p4v(cc_param->vref_0p4v) | |
1150 | V0_vref_0p2v(cc_param->vref_0p2v) | |
1151 | V0_vref_1_1p6v(cc_param->vref_1_1p6v) | |
1152 | V0_vref_0_1p6v(cc_param->vref_0_1p6v); |
1153 | else if (type_c_cfg->parameter_ver == PARAMETER_V1) |
1154 | type_c->cc1_vref = V1_vref_2p6v(cc_param->vref_2p6v) | |
1155 | V1_vref_1p23v(cc_param->vref_1p23v) | |
1156 | V1_vref_0p8v(cc_param->vref_0p8v) | |
1157 | V1_vref_0p66v(cc_param->vref_0p66v) | |
1158 | V1_vref_0p4v(cc_param->vref_0p4v) | |
1159 | V1_vref_0p2v(cc_param->vref_0p2v) | |
1160 | V1_vref_1_1p6v(cc_param->vref_1_1p6v) | |
1161 | V1_vref_0_1p6v(cc_param->vref_0_1p6v); |
1162 | else |
1163 | dev_err(type_c->dev, "%s: unknown parameter_ver %d\n" , |
1164 | __func__, type_c_cfg->parameter_ver); |
1165 | |
1166 | cc_param = &type_c_cfg->cc2_param; |
1167 | type_c->cc2_code = rp4pk_code(cc_param->rp_4p7k_code) |
1168 | | rp36k_code(cc_param->rp_36k_code) |
1169 | | rp12k_code(cc_param->rp_12k_code) |
1170 | | rd_code(cc_param->rd_code); |
1171 | |
1172 | if (type_c_cfg->parameter_ver == PARAMETER_V0) |
1173 | type_c->cc2_vref = V0_vref_2p6v(cc_param->vref_2p6v) | |
1174 | V0_vref_1p23v(cc_param->vref_1p23v) | |
1175 | V0_vref_0p8v(cc_param->vref_0p8v) | |
1176 | V0_vref_0p66v(cc_param->vref_0p66v) | |
1177 | V0_vref_0p4v(cc_param->vref_0p4v) | |
1178 | V0_vref_0p2v(cc_param->vref_0p2v) | |
1179 | V0_vref_1_1p6v(cc_param->vref_1_1p6v) | |
1180 | V0_vref_0_1p6v(cc_param->vref_0_1p6v); |
1181 | else if (type_c_cfg->parameter_ver == PARAMETER_V1) |
1182 | type_c->cc2_vref = V1_vref_2p6v(cc_param->vref_2p6v) | |
1183 | V1_vref_1p23v(cc_param->vref_1p23v) | |
1184 | V1_vref_0p8v(cc_param->vref_0p8v) | |
1185 | V1_vref_0p66v(cc_param->vref_0p66v) | |
1186 | V1_vref_0p4v(cc_param->vref_0p4v) | |
1187 | V1_vref_0p2v(cc_param->vref_0p2v) | |
1188 | V1_vref_1_1p6v(cc_param->vref_1_1p6v) | |
1189 | V1_vref_0_1p6v(cc_param->vref_0_1p6v); |
1190 | else |
1191 | dev_err(type_c->dev, "%s: unknown parameter_ver %d\n" , |
1192 | __func__, type_c_cfg->parameter_ver); |
1193 | |
1194 | type_c->debounce = (type_c_cfg->debounce_val << 1) | DEBOUNCE_EN; |
1195 | |
1196 | return 0; |
1197 | } |
1198 | |
1199 | static int extcon_rtk_type_c_init(struct type_c_data *type_c) |
1200 | { |
1201 | struct device *dev = type_c->dev; |
1202 | unsigned long flags; |
1203 | void __iomem *reg; |
1204 | int val; |
1205 | |
1206 | spin_lock_irqsave(&type_c->lock, flags); |
1207 | |
1208 | /* set parameter */ |
1209 | reg = type_c->reg_base + USB_TYPEC_CTRL_CC1_0; |
1210 | val = readl(addr: reg); |
1211 | val = (~CC_CODE_MASK & val) | (type_c->cc1_code & CC_CODE_MASK); |
1212 | writel(val, addr: reg); |
1213 | |
1214 | reg = type_c->reg_base + USB_TYPEC_CTRL_CC2_0; |
1215 | val = readl(addr: reg); |
1216 | val = (~CC_CODE_MASK & val) | (type_c->cc2_code & CC_CODE_MASK); |
1217 | |
1218 | reg = type_c->reg_base + USB_TYPEC_CTRL_CC1_1; |
1219 | writel(val: type_c->cc1_vref, addr: reg); |
1220 | |
1221 | reg = type_c->reg_base + USB_TYPEC_CTRL_CC2_1; |
1222 | writel(val: type_c->cc2_vref, addr: reg); |
1223 | |
1224 | reg = type_c->reg_base + USB_TYPEC_CTRL; |
1225 | val = readl(addr: reg); |
1226 | val = (~DEBOUNCE_TIME_MASK & val) | (type_c->debounce & DEBOUNCE_TIME_MASK); |
1227 | |
1228 | dev_info(dev, "First check USB_DR_MODE_PERIPHERAL" ); |
1229 | type_c->cc_mode = IN_DEVICE_MODE; |
1230 | type_c->is_attach = IN_DETACH; |
1231 | type_c->connect_change = CONNECT_NO_CHANGE; |
1232 | |
1233 | detect_host(type_c); |
1234 | |
1235 | spin_unlock_irqrestore(lock: &type_c->lock, flags); |
1236 | |
1237 | schedule_delayed_work(dwork: &type_c->delayed_work, delay: msecs_to_jiffies(m: 0)); |
1238 | |
1239 | if (!type_c->port) { |
1240 | struct typec_capability typec_cap = { }; |
1241 | struct fwnode_handle *fwnode; |
1242 | const char *buf; |
1243 | int ret; |
1244 | |
1245 | typec_cap.revision = USB_TYPEC_REV_1_0; |
1246 | typec_cap.prefer_role = TYPEC_NO_PREFERRED_ROLE; |
1247 | typec_cap.driver_data = type_c; |
1248 | typec_cap.ops = &type_c_port_ops; |
1249 | |
1250 | fwnode = device_get_named_child_node(dev, childname: "connector" ); |
1251 | if (!fwnode) |
1252 | return -EINVAL; |
1253 | |
1254 | ret = fwnode_property_read_string(fwnode, propname: "power-role" , val: &buf); |
1255 | if (ret) { |
1256 | dev_err(dev, "power-role not found: %d\n" , ret); |
1257 | return ret; |
1258 | } |
1259 | |
1260 | ret = typec_find_port_power_role(name: buf); |
1261 | if (ret < 0) |
1262 | return ret; |
1263 | typec_cap.type = ret; |
1264 | |
1265 | ret = fwnode_property_read_string(fwnode, propname: "data-role" , val: &buf); |
1266 | if (ret) { |
1267 | dev_err(dev, "data-role not found: %d\n" , ret); |
1268 | return ret; |
1269 | } |
1270 | |
1271 | ret = typec_find_port_data_role(name: buf); |
1272 | if (ret < 0) |
1273 | return ret; |
1274 | typec_cap.data = ret; |
1275 | |
1276 | type_c->port = typec_register_port(parent: type_c->dev, cap: &typec_cap); |
1277 | if (IS_ERR(ptr: type_c->port)) |
1278 | return PTR_ERR(ptr: type_c->port); |
1279 | } |
1280 | |
1281 | return 0; |
1282 | } |
1283 | |
1284 | static int extcon_rtk_type_c_edev_register(struct type_c_data *type_c) |
1285 | { |
1286 | struct device *dev = type_c->dev; |
1287 | int ret = 0; |
1288 | |
1289 | type_c->edev = devm_extcon_dev_allocate(dev, cable: usb_type_c_cable); |
1290 | if (IS_ERR(ptr: type_c->edev)) { |
1291 | dev_err(dev, "failed to allocate extcon device\n" ); |
1292 | return -ENOMEM; |
1293 | } |
1294 | |
1295 | ret = devm_extcon_dev_register(dev, edev: type_c->edev); |
1296 | if (ret < 0) { |
1297 | dev_err(dev, "failed to register extcon device\n" ); |
1298 | return ret; |
1299 | } |
1300 | |
1301 | extcon_set_property_capability(edev: type_c->edev, EXTCON_USB, |
1302 | EXTCON_PROP_USB_VBUS); |
1303 | extcon_set_property_capability(edev: type_c->edev, EXTCON_USB, |
1304 | EXTCON_PROP_USB_TYPEC_POLARITY); |
1305 | extcon_set_property_capability(edev: type_c->edev, EXTCON_USB, |
1306 | EXTCON_PROP_USB_SS); |
1307 | |
1308 | extcon_set_property_capability(edev: type_c->edev, EXTCON_USB_HOST, |
1309 | EXTCON_PROP_USB_VBUS); |
1310 | extcon_set_property_capability(edev: type_c->edev, EXTCON_USB_HOST, |
1311 | EXTCON_PROP_USB_TYPEC_POLARITY); |
1312 | extcon_set_property_capability(edev: type_c->edev, EXTCON_USB_HOST, |
1313 | EXTCON_PROP_USB_SS); |
1314 | |
1315 | return ret; |
1316 | } |
1317 | |
1318 | static int extcon_rtk_type_c_probe(struct platform_device *pdev) |
1319 | { |
1320 | struct device *dev = &pdev->dev; |
1321 | struct type_c_data *type_c; |
1322 | const struct type_c_cfg *type_c_cfg; |
1323 | int ret = 0; |
1324 | |
1325 | type_c = devm_kzalloc(dev, size: sizeof(*type_c), GFP_KERNEL); |
1326 | if (!type_c) |
1327 | return -ENOMEM; |
1328 | |
1329 | type_c->reg_base = devm_platform_ioremap_resource(pdev, index: 0); |
1330 | if (IS_ERR(ptr: type_c->reg_base)) |
1331 | return PTR_ERR(ptr: type_c->reg_base); |
1332 | |
1333 | type_c->dev = dev; |
1334 | |
1335 | type_c->irq = irq_of_parse_and_map(node: pdev->dev.of_node, index: 0); |
1336 | if (type_c->irq <= 0) { |
1337 | dev_err(&pdev->dev, "Type C driver with no IRQ. Check %s setup!\n" , |
1338 | dev_name(&pdev->dev)); |
1339 | ret = -ENODEV; |
1340 | goto err; |
1341 | } |
1342 | |
1343 | ret = devm_request_irq(dev, irq: type_c->irq, handler: type_c_detect_irq, |
1344 | IRQF_SHARED, devname: "type_c_detect" , dev_id: type_c); |
1345 | |
1346 | spin_lock_init(&type_c->lock); |
1347 | |
1348 | type_c->rd_ctrl_gpio_desc = NULL; |
1349 | if (soc_device_match(matches: rtk_soc_kylin)) { |
1350 | struct gpio_desc *gpio; |
1351 | |
1352 | gpio = fwnode_gpiod_get_index(of_fwnode_handle(dev->of_node), |
1353 | con_id: "realtek,rd-ctrl-gpios" , |
1354 | index: 0, flags: GPIOD_OUT_HIGH, label: "rd-ctrl-gpio" ); |
1355 | if (IS_ERR(ptr: gpio)) { |
1356 | dev_err(dev, "Error rd_ctrl-gpios no found (err=%d)\n" , |
1357 | (int)PTR_ERR(gpio)); |
1358 | } else { |
1359 | type_c->rd_ctrl_gpio_desc = gpio; |
1360 | dev_dbg(dev, "%s get rd-ctrl-gpios (id=%d) OK\n" , |
1361 | __func__, desc_to_gpio(gpio)); |
1362 | } |
1363 | } |
1364 | |
1365 | type_c_cfg = of_device_get_match_data(dev); |
1366 | if (!type_c_cfg) { |
1367 | dev_err(dev, "type_c config are not assigned!\n" ); |
1368 | ret = -EINVAL; |
1369 | goto err; |
1370 | } |
1371 | |
1372 | type_c->type_c_cfg = devm_kzalloc(dev, size: sizeof(*type_c_cfg), GFP_KERNEL); |
1373 | |
1374 | memcpy(type_c->type_c_cfg, type_c_cfg, sizeof(*type_c_cfg)); |
1375 | |
1376 | if (setup_type_c_parameter(type_c)) { |
1377 | dev_err(dev, "ERROR: %s to setup type c parameter!!" , __func__); |
1378 | ret = -EINVAL; |
1379 | goto err; |
1380 | } |
1381 | |
1382 | INIT_DELAYED_WORK(&type_c->delayed_work, host_device_switch); |
1383 | |
1384 | ret = extcon_rtk_type_c_init(type_c); |
1385 | if (ret) { |
1386 | dev_err(dev, "%s failed to init type_c\n" , __func__); |
1387 | goto err; |
1388 | } |
1389 | |
1390 | platform_set_drvdata(pdev, data: type_c); |
1391 | |
1392 | ret = extcon_rtk_type_c_edev_register(type_c); |
1393 | |
1394 | create_debug_files(type_c); |
1395 | |
1396 | return 0; |
1397 | |
1398 | err: |
1399 | dev_err(&pdev->dev, "%s: Probe fail, %d\n" , __func__, ret); |
1400 | |
1401 | return ret; |
1402 | } |
1403 | |
1404 | static void extcon_rtk_type_c_remove(struct platform_device *pdev) |
1405 | { |
1406 | struct device *dev = &pdev->dev; |
1407 | struct type_c_data *type_c = dev_get_drvdata(dev); |
1408 | u32 default_ctrl; |
1409 | unsigned long flags; |
1410 | |
1411 | remove_debug_files(type_c); |
1412 | |
1413 | if (type_c->port) { |
1414 | typec_unregister_port(port: type_c->port); |
1415 | type_c->port = NULL; |
1416 | } |
1417 | |
1418 | cancel_delayed_work_sync(dwork: &type_c->delayed_work); |
1419 | flush_delayed_work(dwork: &type_c->delayed_work); |
1420 | WARN_ON_ONCE(delayed_work_pending(&type_c->delayed_work)); |
1421 | |
1422 | spin_lock_irqsave(&type_c->lock, flags); |
1423 | /* disable interrupt */ |
1424 | default_ctrl = readl(addr: type_c->reg_base + USB_TYPEC_CTRL) & |
1425 | DEBOUNCE_TIME_MASK; |
1426 | writel(val: default_ctrl, addr: type_c->reg_base + USB_TYPEC_CTRL); |
1427 | |
1428 | /* disable cc detect, rp, rd */ |
1429 | writel(PLR_EN, addr: type_c->reg_base + USB_TYPEC_CTRL_CC1_0); |
1430 | writel(val: 0, addr: type_c->reg_base + USB_TYPEC_CTRL_CC2_0); |
1431 | |
1432 | spin_unlock_irqrestore(lock: &type_c->lock, flags); |
1433 | |
1434 | if (type_c->rd_ctrl_gpio_desc) |
1435 | gpiod_put(desc: type_c->rd_ctrl_gpio_desc); |
1436 | type_c->rd_ctrl_gpio_desc = NULL; |
1437 | |
1438 | free_irq(type_c->irq, type_c); |
1439 | } |
1440 | |
1441 | static const struct type_c_cfg rtd1295_type_c_cfg = { |
1442 | .parameter_ver = PARAMETER_V0, |
1443 | .cc_dfp_mode = CC_MODE_DFP_3_0, |
1444 | .cc1_param = { .rp_4p7k_code = 0xb, |
1445 | .rp_36k_code = 0x17, |
1446 | .rp_12k_code = 0x10, |
1447 | .rd_code = 0, |
1448 | .ra_code = 0, |
1449 | .vref_2p6v = 0x0, |
1450 | .vref_1p23v = 0x0, |
1451 | .vref_0p8v = 0x3, |
1452 | .vref_0p66v = 0x0, |
1453 | .vref_0p4v = 0x0, |
1454 | .vref_0p2v = 0x4, |
1455 | .vref_1_1p6v = 0, |
1456 | .vref_0_1p6v = 0 }, |
1457 | .cc2_param = { .rp_4p7k_code = 0xc, |
1458 | .rp_36k_code = 0x17, |
1459 | .rp_12k_code = 0x12, |
1460 | .rd_code = 0, |
1461 | .ra_code = 0, |
1462 | .vref_2p6v = 0x2, |
1463 | .vref_1p23v = 0x0, |
1464 | .vref_0p8v = 0x3, |
1465 | .vref_0p66v = 0x0, |
1466 | .vref_0p4v = 0x0, |
1467 | .vref_0p2v = 0x5, |
1468 | .vref_1_1p6v = 0, |
1469 | .vref_0_1p6v = 0 }, |
1470 | .debounce_val = 0x7f, /* 1b,1us 7f,4.7us */ |
1471 | .use_defalut_parameter = false, |
1472 | }; |
1473 | |
1474 | static const struct type_c_cfg rtd1395_type_c_cfg = { |
1475 | .parameter_ver = PARAMETER_V0, |
1476 | .cc_dfp_mode = CC_MODE_DFP_3_0, |
1477 | .cc1_param = { .rp_4p7k_code = 0xc, |
1478 | .rp_36k_code = 0xb, |
1479 | .rp_12k_code = 0xe, |
1480 | .rd_code = 0x10, |
1481 | .ra_code = 0x0, |
1482 | .vref_2p6v = 0x0, |
1483 | .vref_1p23v = 0x1, |
1484 | .vref_0p8v = 0x0, |
1485 | .vref_0p66v = 0x0, |
1486 | .vref_0p4v = 0x3, |
1487 | .vref_0p2v = 0x0, |
1488 | .vref_1_1p6v = 0x7, |
1489 | .vref_0_1p6v = 0x7 }, |
1490 | .cc2_param = { .rp_4p7k_code = 0xb, |
1491 | .rp_36k_code = 0x9, |
1492 | .rp_12k_code = 0xe, |
1493 | .rd_code = 0xf, |
1494 | .ra_code = 0x0, |
1495 | .vref_2p6v = 0x1, |
1496 | .vref_1p23v = 0x3, |
1497 | .vref_0p8v = 0x3, |
1498 | .vref_0p66v = 0x2, |
1499 | .vref_0p4v = 0x3, |
1500 | .vref_0p2v = 0x2, |
1501 | .vref_1_1p6v = 0x7, |
1502 | .vref_0_1p6v = 0x7 }, |
1503 | .debounce_val = 0x7f, /* 1b,1us 7f,4.7us */ |
1504 | .use_defalut_parameter = false, |
1505 | }; |
1506 | |
1507 | static const struct type_c_cfg rtd1619_type_c_cfg = { |
1508 | .parameter_ver = PARAMETER_V0, |
1509 | .cc_dfp_mode = CC_MODE_DFP_3_0, |
1510 | .cc1_param = { .rp_4p7k_code = 0xc, |
1511 | .rp_36k_code = 0xf, |
1512 | .rp_12k_code = 0xe, |
1513 | .rd_code = 0x11, |
1514 | .ra_code = 0x0, |
1515 | .vref_2p6v = 0x5, |
1516 | .vref_1p23v = 0x7, |
1517 | .vref_0p8v = 0xa, |
1518 | .vref_0p66v = 0xa, |
1519 | .vref_0p4v = 0x3, |
1520 | .vref_0p2v = 0x2, |
1521 | .vref_1_1p6v = 0x7, |
1522 | .vref_0_1p6v = 0x7 }, |
1523 | .cc2_param = { .rp_4p7k_code = 0xc, |
1524 | .rp_36k_code = 0xf, |
1525 | .rp_12k_code = 0xe, |
1526 | .rd_code = 0xf, |
1527 | .ra_code = 0x0, |
1528 | .vref_2p6v = 0x5, |
1529 | .vref_1p23v = 0x8, |
1530 | .vref_0p8v = 0xa, |
1531 | .vref_0p66v = 0xa, |
1532 | .vref_0p4v = 0x3, |
1533 | .vref_0p2v = 0x2, |
1534 | .vref_1_1p6v = 0x7, |
1535 | .vref_0_1p6v = 0x7 }, |
1536 | .debounce_val = 0x7f, /* 1b,1us 7f,4.7us */ |
1537 | .use_defalut_parameter = false, |
1538 | }; |
1539 | |
1540 | static const struct type_c_cfg rtd1319_type_c_cfg = { |
1541 | .parameter_ver = PARAMETER_V0, |
1542 | .cc_dfp_mode = CC_MODE_DFP_1_5, |
1543 | .cc1_param = { .rp_4p7k_code = 0x9, |
1544 | .rp_36k_code = 0xe, |
1545 | .rp_12k_code = 0x9, |
1546 | .rd_code = 0x9, |
1547 | .ra_code = 0x7, |
1548 | .vref_2p6v = 0x3, |
1549 | .vref_1p23v = 0x7, |
1550 | .vref_0p8v = 0x7, |
1551 | .vref_0p66v = 0x6, |
1552 | .vref_0p4v = 0x2, |
1553 | .vref_0p2v = 0x3, |
1554 | .vref_1_1p6v = 0x4, |
1555 | .vref_0_1p6v = 0x7 }, |
1556 | .cc2_param = { .rp_4p7k_code = 0x8, |
1557 | .rp_36k_code = 0xe, |
1558 | .rp_12k_code = 0x9, |
1559 | .rd_code = 0x9, |
1560 | .ra_code = 0x7, |
1561 | .vref_2p6v = 0x3, |
1562 | .vref_1p23v = 0x7, |
1563 | .vref_0p8v = 0x7, |
1564 | .vref_0p66v = 0x6, |
1565 | .vref_0p4v = 0x3, |
1566 | .vref_0p2v = 0x3, |
1567 | .vref_1_1p6v = 0x6, |
1568 | .vref_0_1p6v = 0x7 }, |
1569 | .debounce_val = 0x7f, /* 1b,1us 7f,4.7us */ |
1570 | .use_defalut_parameter = false, |
1571 | }; |
1572 | |
1573 | static const struct type_c_cfg rtd1312c_type_c_cfg = { |
1574 | .parameter_ver = PARAMETER_V0, |
1575 | .cc_dfp_mode = CC_MODE_DFP_1_5, |
1576 | .cc1_param = { .rp_4p7k_code = 0xe, |
1577 | .rp_36k_code = 0xc, |
1578 | .rp_12k_code = 0xc, |
1579 | .rd_code = 0xa, |
1580 | .ra_code = 0x3, |
1581 | .vref_2p6v = 0xa, |
1582 | .vref_1p23v = 0x7, |
1583 | .vref_0p8v = 0x7, |
1584 | .vref_0p66v = 0x7, |
1585 | .vref_0p4v = 0x4, |
1586 | .vref_0p2v = 0x4, |
1587 | .vref_1_1p6v = 0x7, |
1588 | .vref_0_1p6v = 0x7 }, |
1589 | .cc2_param = { .rp_4p7k_code = 0xe, |
1590 | .rp_36k_code = 0xc, |
1591 | .rp_12k_code = 0xc, |
1592 | .rd_code = 0xa, |
1593 | .ra_code = 0x3, |
1594 | .vref_2p6v = 0xa, |
1595 | .vref_1p23v = 0x7, |
1596 | .vref_0p8v = 0x7, |
1597 | .vref_0p66v = 0x7, |
1598 | .vref_0p4v = 0x4, |
1599 | .vref_0p2v = 0x4, |
1600 | .vref_1_1p6v = 0x7, |
1601 | .vref_0_1p6v = 0x7 }, |
1602 | .debounce_val = 0x7f, /* 1b,1us 7f,4.7us */ |
1603 | .use_defalut_parameter = false, |
1604 | }; |
1605 | |
1606 | static const struct type_c_cfg rtd1619b_type_c_cfg = { |
1607 | .parameter_ver = PARAMETER_V1, |
1608 | .cc_dfp_mode = CC_MODE_DFP_1_5, |
1609 | .cc1_param = { .rp_4p7k_code = 0xf, |
1610 | .rp_36k_code = 0xf, |
1611 | .rp_12k_code = 0xf, |
1612 | .rd_code = 0xf, |
1613 | .ra_code = 0x7, |
1614 | .vref_2p6v = 0x9, |
1615 | .vref_1p23v = 0x7, |
1616 | .vref_0p8v = 0x9, |
1617 | .vref_0p66v = 0x8, |
1618 | .vref_0p4v = 0x7, |
1619 | .vref_0p2v = 0x9, |
1620 | .vref_1_1p6v = 0x7, |
1621 | .vref_0_1p6v = 0x7 }, |
1622 | .cc2_param = { .rp_4p7k_code = 0xf, |
1623 | .rp_36k_code = 0xf, |
1624 | .rp_12k_code = 0xf, |
1625 | .rd_code = 0xf, |
1626 | .ra_code = 0x7, |
1627 | .vref_1p23v = 0x7, |
1628 | .vref_0p8v = 0x9, |
1629 | .vref_0p66v = 0x8, |
1630 | .vref_0p4v = 0x7, |
1631 | .vref_0p2v = 0x8, |
1632 | .vref_1_1p6v = 0x7, |
1633 | .vref_0_1p6v = 0x7 }, |
1634 | .debounce_val = 0x7f, /* 1b,1us 7f,4.7us */ |
1635 | .use_defalut_parameter = false, |
1636 | }; |
1637 | |
1638 | static const struct type_c_cfg rtd1319d_type_c_cfg = { |
1639 | .parameter_ver = PARAMETER_V1, |
1640 | .cc_dfp_mode = CC_MODE_DFP_1_5, |
1641 | .cc1_param = { .rp_4p7k_code = 0xe, |
1642 | .rp_36k_code = 0x3, |
1643 | .rp_12k_code = 0xe, |
1644 | .rd_code = 0xf, |
1645 | .ra_code = 0x6, |
1646 | .vref_2p6v = 0x7, |
1647 | .vref_1p23v = 0x7, |
1648 | .vref_0p8v = 0x8, |
1649 | .vref_0p66v = 0x7, |
1650 | .vref_0p4v = 0x7, |
1651 | .vref_0p2v = 0x7, |
1652 | .vref_1_1p6v = 0x7, |
1653 | .vref_0_1p6v = 0x7 }, |
1654 | .cc2_param = { .rp_4p7k_code = 0xe, |
1655 | .rp_36k_code = 0x3, |
1656 | .rp_12k_code = 0xe, |
1657 | .rd_code = 0xf, |
1658 | .ra_code = 0x6, |
1659 | .vref_2p6v = 0x7, |
1660 | .vref_1p23v = 0x7, |
1661 | .vref_0p8v = 0x8, |
1662 | .vref_0p66v = 0x7, |
1663 | .vref_0p4v = 0x7, |
1664 | .vref_0p2v = 0x8, |
1665 | .vref_1_1p6v = 0x7, |
1666 | .vref_0_1p6v = 0x7 }, |
1667 | .debounce_val = 0x7f, /* 1b,1us 7f,4.7us */ |
1668 | .use_defalut_parameter = false, |
1669 | }; |
1670 | |
1671 | static const struct type_c_cfg rtd1315e_type_c_cfg = { |
1672 | .parameter_ver = PARAMETER_V1, |
1673 | .cc_dfp_mode = CC_MODE_DFP_1_5, |
1674 | .cc1_param = { .rp_4p7k_code = 0xe, |
1675 | .rp_36k_code = 0x3, |
1676 | .rp_12k_code = 0xe, |
1677 | .rd_code = 0xf, |
1678 | .ra_code = 0x6, |
1679 | .vref_2p6v = 0x7, |
1680 | .vref_1p23v = 0x7, |
1681 | .vref_0p8v = 0x8, |
1682 | .vref_0p66v = 0x7, |
1683 | .vref_0p4v = 0x7, |
1684 | .vref_0p2v = 0x7, |
1685 | .vref_1_1p6v = 0x7, |
1686 | .vref_0_1p6v = 0x7 }, |
1687 | .cc2_param = { .rp_4p7k_code = 0xe, |
1688 | .rp_36k_code = 0x3, |
1689 | .rp_12k_code = 0xe, |
1690 | .rd_code = 0xf, |
1691 | .ra_code = 0x6, |
1692 | .vref_2p6v = 0x7, |
1693 | .vref_1p23v = 0x7, |
1694 | .vref_0p8v = 0x8, |
1695 | .vref_0p66v = 0x7, |
1696 | .vref_0p4v = 0x7, |
1697 | .vref_0p2v = 0x8, |
1698 | .vref_1_1p6v = 0x7, |
1699 | .vref_0_1p6v = 0x7 }, |
1700 | .debounce_val = 0x7f, /* 1b,1us 7f,4.7us */ |
1701 | .use_defalut_parameter = false, |
1702 | }; |
1703 | |
1704 | static const struct of_device_id extcon_rtk_type_c_match[] = { |
1705 | { .compatible = "realtek,rtd1295-type-c" , .data = &rtd1295_type_c_cfg }, |
1706 | { .compatible = "realtek,rtd1312c-type-c" , .data = &rtd1312c_type_c_cfg }, |
1707 | { .compatible = "realtek,rtd1315e-type-c" , .data = &rtd1315e_type_c_cfg }, |
1708 | { .compatible = "realtek,rtd1319-type-c" , .data = &rtd1319_type_c_cfg }, |
1709 | { .compatible = "realtek,rtd1319d-type-c" , .data = &rtd1319d_type_c_cfg }, |
1710 | { .compatible = "realtek,rtd1395-type-c" , .data = &rtd1395_type_c_cfg }, |
1711 | { .compatible = "realtek,rtd1619-type-c" , .data = &rtd1619_type_c_cfg }, |
1712 | { .compatible = "realtek,rtd1619b-type-c" , .data = &rtd1619b_type_c_cfg }, |
1713 | {}, |
1714 | }; |
1715 | MODULE_DEVICE_TABLE(of, extcon_rtk_type_c_match); |
1716 | |
1717 | #ifdef CONFIG_PM_SLEEP |
1718 | static int extcon_rtk_type_c_prepare(struct device *dev) |
1719 | { |
1720 | struct type_c_data *type_c = dev_get_drvdata(dev); |
1721 | u32 default_ctrl; |
1722 | unsigned long flags; |
1723 | |
1724 | cancel_delayed_work_sync(dwork: &type_c->delayed_work); |
1725 | flush_delayed_work(dwork: &type_c->delayed_work); |
1726 | WARN_ON_ONCE(delayed_work_pending(&type_c->delayed_work)); |
1727 | |
1728 | spin_lock_irqsave(&type_c->lock, flags); |
1729 | /* disable interrupt */ |
1730 | default_ctrl = readl(addr: type_c->reg_base + USB_TYPEC_CTRL) & |
1731 | DEBOUNCE_TIME_MASK; |
1732 | writel(val: default_ctrl, addr: type_c->reg_base + USB_TYPEC_CTRL); |
1733 | |
1734 | /* disable cc detect, rp, rd */ |
1735 | writel(PLR_EN, addr: type_c->reg_base + USB_TYPEC_CTRL_CC1_0); |
1736 | writel(val: 0, addr: type_c->reg_base + USB_TYPEC_CTRL_CC2_0); |
1737 | |
1738 | spin_unlock_irqrestore(lock: &type_c->lock, flags); |
1739 | |
1740 | return 0; |
1741 | } |
1742 | |
1743 | static void extcon_rtk_type_c_complete(struct device *dev) |
1744 | { |
1745 | /* nothing */ |
1746 | } |
1747 | |
1748 | static int extcon_rtk_type_c_suspend(struct device *dev) |
1749 | { |
1750 | /* nothing */ |
1751 | |
1752 | return 0; |
1753 | } |
1754 | |
1755 | static int extcon_rtk_type_c_resume(struct device *dev) |
1756 | { |
1757 | struct type_c_data *type_c = dev_get_drvdata(dev); |
1758 | int ret; |
1759 | |
1760 | ret = extcon_rtk_type_c_init(type_c); |
1761 | if (ret) { |
1762 | dev_err(dev, "%s failed to init type_c\n" , __func__); |
1763 | return ret; |
1764 | } |
1765 | |
1766 | return 0; |
1767 | } |
1768 | |
1769 | static const struct dev_pm_ops extcon_rtk_type_c_pm_ops = { |
1770 | SET_LATE_SYSTEM_SLEEP_PM_OPS(extcon_rtk_type_c_suspend, extcon_rtk_type_c_resume) |
1771 | .prepare = extcon_rtk_type_c_prepare, |
1772 | .complete = extcon_rtk_type_c_complete, |
1773 | }; |
1774 | |
1775 | #define DEV_PM_OPS (&extcon_rtk_type_c_pm_ops) |
1776 | #else |
1777 | #define DEV_PM_OPS NULL |
1778 | #endif /* CONFIG_PM_SLEEP */ |
1779 | |
1780 | static struct platform_driver extcon_rtk_type_c_driver = { |
1781 | .probe = extcon_rtk_type_c_probe, |
1782 | .remove_new = extcon_rtk_type_c_remove, |
1783 | .driver = { |
1784 | .name = "extcon-rtk-type_c" , |
1785 | .of_match_table = extcon_rtk_type_c_match, |
1786 | .pm = DEV_PM_OPS, |
1787 | }, |
1788 | }; |
1789 | |
1790 | module_platform_driver(extcon_rtk_type_c_driver); |
1791 | |
1792 | MODULE_DESCRIPTION("Realtek Extcon Type C driver" ); |
1793 | MODULE_AUTHOR("Stanley Chang <stanley_chang@realtek.com>" ); |
1794 | MODULE_LICENSE("GPL" ); |
1795 | |