Commit | Line | Data |
---|---|---|
27a28d32 JK |
1 | /* |
2 | * extcon-max77843.c - Maxim MAX77843 extcon driver to support | |
3 | * MUIC(Micro USB Interface Controller) | |
4 | * | |
5 | * Copyright (C) 2015 Samsung Electronics | |
6 | * Author: Jaewon Kim <jaewon02.kim@samsung.com> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | */ | |
13 | ||
14 | #include <linux/extcon.h> | |
15 | #include <linux/i2c.h> | |
16 | #include <linux/interrupt.h> | |
17 | #include <linux/kernel.h> | |
bc1aadc1 | 18 | #include <linux/mfd/max77693-common.h> |
27a28d32 JK |
19 | #include <linux/mfd/max77843-private.h> |
20 | #include <linux/module.h> | |
21 | #include <linux/platform_device.h> | |
22 | #include <linux/workqueue.h> | |
23 | ||
24 | #define DELAY_MS_DEFAULT 15000 /* unit: millisecond */ | |
25 | ||
26 | enum max77843_muic_status { | |
27 | MAX77843_MUIC_STATUS1 = 0, | |
28 | MAX77843_MUIC_STATUS2, | |
29 | MAX77843_MUIC_STATUS3, | |
30 | ||
31 | MAX77843_MUIC_STATUS_NUM, | |
32 | }; | |
33 | ||
34 | struct max77843_muic_info { | |
35 | struct device *dev; | |
bc1aadc1 | 36 | struct max77693_dev *max77843; |
27a28d32 JK |
37 | struct extcon_dev *edev; |
38 | ||
39 | struct mutex mutex; | |
40 | struct work_struct irq_work; | |
41 | struct delayed_work wq_detcable; | |
42 | ||
43 | u8 status[MAX77843_MUIC_STATUS_NUM]; | |
44 | int prev_cable_type; | |
45 | int prev_chg_type; | |
46 | int prev_gnd_type; | |
47 | ||
48 | bool irq_adc; | |
49 | bool irq_chg; | |
50 | }; | |
51 | ||
52 | enum max77843_muic_cable_group { | |
53 | MAX77843_CABLE_GROUP_ADC = 0, | |
54 | MAX77843_CABLE_GROUP_ADC_GND, | |
55 | MAX77843_CABLE_GROUP_CHG, | |
56 | }; | |
57 | ||
58 | enum max77843_muic_adc_debounce_time { | |
59 | MAX77843_DEBOUNCE_TIME_5MS = 0, | |
60 | MAX77843_DEBOUNCE_TIME_10MS, | |
61 | MAX77843_DEBOUNCE_TIME_25MS, | |
62 | MAX77843_DEBOUNCE_TIME_38_62MS, | |
63 | }; | |
64 | ||
65 | /* Define accessory cable type */ | |
66 | enum max77843_muic_accessory_type { | |
67 | MAX77843_MUIC_ADC_GROUND = 0, | |
68 | MAX77843_MUIC_ADC_SEND_END_BUTTON, | |
69 | MAX77843_MUIC_ADC_REMOTE_S1_BUTTON, | |
70 | MAX77843_MUIC_ADC_REMOTE_S2_BUTTON, | |
71 | MAX77843_MUIC_ADC_REMOTE_S3_BUTTON, | |
72 | MAX77843_MUIC_ADC_REMOTE_S4_BUTTON, | |
73 | MAX77843_MUIC_ADC_REMOTE_S5_BUTTON, | |
74 | MAX77843_MUIC_ADC_REMOTE_S6_BUTTON, | |
75 | MAX77843_MUIC_ADC_REMOTE_S7_BUTTON, | |
76 | MAX77843_MUIC_ADC_REMOTE_S8_BUTTON, | |
77 | MAX77843_MUIC_ADC_REMOTE_S9_BUTTON, | |
78 | MAX77843_MUIC_ADC_REMOTE_S10_BUTTON, | |
79 | MAX77843_MUIC_ADC_REMOTE_S11_BUTTON, | |
80 | MAX77843_MUIC_ADC_REMOTE_S12_BUTTON, | |
81 | MAX77843_MUIC_ADC_RESERVED_ACC_1, | |
82 | MAX77843_MUIC_ADC_RESERVED_ACC_2, | |
83 | MAX77843_MUIC_ADC_RESERVED_ACC_3, | |
84 | MAX77843_MUIC_ADC_RESERVED_ACC_4, | |
85 | MAX77843_MUIC_ADC_RESERVED_ACC_5, | |
86 | MAX77843_MUIC_ADC_AUDIO_DEVICE_TYPE2, | |
87 | MAX77843_MUIC_ADC_PHONE_POWERED_DEV, | |
88 | MAX77843_MUIC_ADC_TTY_CONVERTER, | |
89 | MAX77843_MUIC_ADC_UART_CABLE, | |
90 | MAX77843_MUIC_ADC_CEA936A_TYPE1_CHG, | |
91 | MAX77843_MUIC_ADC_FACTORY_MODE_USB_OFF, | |
92 | MAX77843_MUIC_ADC_FACTORY_MODE_USB_ON, | |
93 | MAX77843_MUIC_ADC_AV_CABLE_NOLOAD, | |
94 | MAX77843_MUIC_ADC_CEA936A_TYPE2_CHG, | |
95 | MAX77843_MUIC_ADC_FACTORY_MODE_UART_OFF, | |
96 | MAX77843_MUIC_ADC_FACTORY_MODE_UART_ON, | |
97 | MAX77843_MUIC_ADC_AUDIO_DEVICE_TYPE1, | |
98 | MAX77843_MUIC_ADC_OPEN, | |
99 | ||
af57fa4d SR |
100 | /* |
101 | * The below accessories should check | |
102 | * not only ADC value but also ADC1K and VBVolt value. | |
103 | */ | |
27a28d32 JK |
104 | /* Offset|ADC1K|VBVolt| */ |
105 | MAX77843_MUIC_GND_USB_HOST = 0x100, /* 0x1| 0| 0| */ | |
106 | MAX77843_MUIC_GND_USB_HOST_VB = 0x101, /* 0x1| 0| 1| */ | |
107 | MAX77843_MUIC_GND_MHL = 0x102, /* 0x1| 1| 0| */ | |
108 | MAX77843_MUIC_GND_MHL_VB = 0x103, /* 0x1| 1| 1| */ | |
109 | }; | |
110 | ||
111 | /* Define charger cable type */ | |
112 | enum max77843_muic_charger_type { | |
113 | MAX77843_MUIC_CHG_NONE = 0, | |
114 | MAX77843_MUIC_CHG_USB, | |
115 | MAX77843_MUIC_CHG_DOWNSTREAM, | |
116 | MAX77843_MUIC_CHG_DEDICATED, | |
117 | MAX77843_MUIC_CHG_SPECIAL_500MA, | |
118 | MAX77843_MUIC_CHG_SPECIAL_1A, | |
119 | MAX77843_MUIC_CHG_SPECIAL_BIAS, | |
120 | MAX77843_MUIC_CHG_RESERVED, | |
121 | MAX77843_MUIC_CHG_GND, | |
122 | }; | |
123 | ||
73b6ecdb | 124 | static const unsigned int max77843_extcon_cable[] = { |
2a9de9c0 CC |
125 | EXTCON_USB, |
126 | EXTCON_USB_HOST, | |
8b45b6a0 | 127 | EXTCON_CHG_USB_SDP, |
11eecf91 CC |
128 | EXTCON_CHG_USB_DCP, |
129 | EXTCON_CHG_USB_CDP, | |
130 | EXTCON_CHG_USB_FAST, | |
131 | EXTCON_CHG_USB_SLOW, | |
132 | EXTCON_DISP_MHL, | |
2a9de9c0 CC |
133 | EXTCON_JIG, |
134 | EXTCON_NONE, | |
27a28d32 JK |
135 | }; |
136 | ||
137 | struct max77843_muic_irq { | |
138 | unsigned int irq; | |
139 | const char *name; | |
140 | unsigned int virq; | |
141 | }; | |
142 | ||
143 | static struct max77843_muic_irq max77843_muic_irqs[] = { | |
144 | { MAX77843_MUIC_IRQ_INT1_ADC, "MUIC-ADC" }, | |
145 | { MAX77843_MUIC_IRQ_INT1_ADCERROR, "MUIC-ADC_ERROR" }, | |
146 | { MAX77843_MUIC_IRQ_INT1_ADC1K, "MUIC-ADC1K" }, | |
147 | { MAX77843_MUIC_IRQ_INT2_CHGTYP, "MUIC-CHGTYP" }, | |
148 | { MAX77843_MUIC_IRQ_INT2_CHGDETRUN, "MUIC-CHGDETRUN" }, | |
149 | { MAX77843_MUIC_IRQ_INT2_DCDTMR, "MUIC-DCDTMR" }, | |
150 | { MAX77843_MUIC_IRQ_INT2_DXOVP, "MUIC-DXOVP" }, | |
151 | { MAX77843_MUIC_IRQ_INT2_VBVOLT, "MUIC-VBVOLT" }, | |
152 | { MAX77843_MUIC_IRQ_INT3_VBADC, "MUIC-VBADC" }, | |
153 | { MAX77843_MUIC_IRQ_INT3_VDNMON, "MUIC-VDNMON" }, | |
154 | { MAX77843_MUIC_IRQ_INT3_DNRES, "MUIC-DNRES" }, | |
155 | { MAX77843_MUIC_IRQ_INT3_MPNACK, "MUIC-MPNACK"}, | |
156 | { MAX77843_MUIC_IRQ_INT3_MRXBUFOW, "MUIC-MRXBUFOW"}, | |
157 | { MAX77843_MUIC_IRQ_INT3_MRXTRF, "MUIC-MRXTRF"}, | |
158 | { MAX77843_MUIC_IRQ_INT3_MRXPERR, "MUIC-MRXPERR"}, | |
159 | { MAX77843_MUIC_IRQ_INT3_MRXRDY, "MUIC-MRXRDY"}, | |
160 | }; | |
161 | ||
162 | static const struct regmap_config max77843_muic_regmap_config = { | |
163 | .reg_bits = 8, | |
164 | .val_bits = 8, | |
165 | .max_register = MAX77843_MUIC_REG_END, | |
166 | }; | |
167 | ||
168 | static const struct regmap_irq max77843_muic_irq[] = { | |
169 | /* INT1 interrupt */ | |
170 | { .reg_offset = 0, .mask = MAX77843_MUIC_ADC, }, | |
171 | { .reg_offset = 0, .mask = MAX77843_MUIC_ADCERROR, }, | |
172 | { .reg_offset = 0, .mask = MAX77843_MUIC_ADC1K, }, | |
173 | ||
174 | /* INT2 interrupt */ | |
175 | { .reg_offset = 1, .mask = MAX77843_MUIC_CHGTYP, }, | |
176 | { .reg_offset = 1, .mask = MAX77843_MUIC_CHGDETRUN, }, | |
177 | { .reg_offset = 1, .mask = MAX77843_MUIC_DCDTMR, }, | |
178 | { .reg_offset = 1, .mask = MAX77843_MUIC_DXOVP, }, | |
179 | { .reg_offset = 1, .mask = MAX77843_MUIC_VBVOLT, }, | |
180 | ||
181 | /* INT3 interrupt */ | |
182 | { .reg_offset = 2, .mask = MAX77843_MUIC_VBADC, }, | |
183 | { .reg_offset = 2, .mask = MAX77843_MUIC_VDNMON, }, | |
184 | { .reg_offset = 2, .mask = MAX77843_MUIC_DNRES, }, | |
185 | { .reg_offset = 2, .mask = MAX77843_MUIC_MPNACK, }, | |
186 | { .reg_offset = 2, .mask = MAX77843_MUIC_MRXBUFOW, }, | |
187 | { .reg_offset = 2, .mask = MAX77843_MUIC_MRXTRF, }, | |
188 | { .reg_offset = 2, .mask = MAX77843_MUIC_MRXPERR, }, | |
189 | { .reg_offset = 2, .mask = MAX77843_MUIC_MRXRDY, }, | |
190 | }; | |
191 | ||
192 | static const struct regmap_irq_chip max77843_muic_irq_chip = { | |
193 | .name = "max77843-muic", | |
194 | .status_base = MAX77843_MUIC_REG_INT1, | |
195 | .mask_base = MAX77843_MUIC_REG_INTMASK1, | |
196 | .mask_invert = true, | |
197 | .num_regs = 3, | |
198 | .irqs = max77843_muic_irq, | |
199 | .num_irqs = ARRAY_SIZE(max77843_muic_irq), | |
200 | }; | |
201 | ||
202 | static int max77843_muic_set_path(struct max77843_muic_info *info, | |
203 | u8 val, bool attached) | |
204 | { | |
bc1aadc1 | 205 | struct max77693_dev *max77843 = info->max77843; |
27a28d32 JK |
206 | int ret = 0; |
207 | unsigned int ctrl1, ctrl2; | |
208 | ||
209 | if (attached) | |
210 | ctrl1 = val; | |
211 | else | |
309a3e00 | 212 | ctrl1 = MAX77843_MUIC_CONTROL1_SW_OPEN; |
27a28d32 JK |
213 | |
214 | ret = regmap_update_bits(max77843->regmap_muic, | |
215 | MAX77843_MUIC_REG_CONTROL1, | |
309a3e00 | 216 | MAX77843_MUIC_CONTROL1_COM_SW, ctrl1); |
27a28d32 JK |
217 | if (ret < 0) { |
218 | dev_err(info->dev, "Cannot switch MUIC port\n"); | |
219 | return ret; | |
220 | } | |
221 | ||
222 | if (attached) | |
223 | ctrl2 = MAX77843_MUIC_CONTROL2_CPEN_MASK; | |
224 | else | |
225 | ctrl2 = MAX77843_MUIC_CONTROL2_LOWPWR_MASK; | |
226 | ||
227 | ret = regmap_update_bits(max77843->regmap_muic, | |
228 | MAX77843_MUIC_REG_CONTROL2, | |
229 | MAX77843_MUIC_CONTROL2_LOWPWR_MASK | | |
230 | MAX77843_MUIC_CONTROL2_CPEN_MASK, ctrl2); | |
231 | if (ret < 0) { | |
232 | dev_err(info->dev, "Cannot update lowpower mode\n"); | |
233 | return ret; | |
234 | } | |
235 | ||
236 | dev_dbg(info->dev, | |
237 | "CONTROL1 : 0x%02x, CONTROL2 : 0x%02x, state : %s\n", | |
238 | ctrl1, ctrl2, attached ? "attached" : "detached"); | |
239 | ||
240 | return 0; | |
241 | } | |
242 | ||
243 | static int max77843_muic_get_cable_type(struct max77843_muic_info *info, | |
244 | enum max77843_muic_cable_group group, bool *attached) | |
245 | { | |
246 | int adc, chg_type, cable_type, gnd_type; | |
247 | ||
248 | adc = info->status[MAX77843_MUIC_STATUS1] & | |
249 | MAX77843_MUIC_STATUS1_ADC_MASK; | |
309a3e00 | 250 | adc >>= MAX77843_MUIC_STATUS1_ADC_SHIFT; |
27a28d32 JK |
251 | |
252 | switch (group) { | |
253 | case MAX77843_CABLE_GROUP_ADC: | |
254 | if (adc == MAX77843_MUIC_ADC_OPEN) { | |
255 | *attached = false; | |
256 | cable_type = info->prev_cable_type; | |
257 | info->prev_cable_type = MAX77843_MUIC_ADC_OPEN; | |
258 | } else { | |
259 | *attached = true; | |
260 | cable_type = info->prev_cable_type = adc; | |
261 | } | |
262 | break; | |
263 | case MAX77843_CABLE_GROUP_CHG: | |
264 | chg_type = info->status[MAX77843_MUIC_STATUS2] & | |
265 | MAX77843_MUIC_STATUS2_CHGTYP_MASK; | |
266 | ||
267 | /* Check GROUND accessory with charger cable */ | |
268 | if (adc == MAX77843_MUIC_ADC_GROUND) { | |
269 | if (chg_type == MAX77843_MUIC_CHG_NONE) { | |
af57fa4d SR |
270 | /* |
271 | * The following state when charger cable is | |
27a28d32 | 272 | * disconnected but the GROUND accessory still |
af57fa4d SR |
273 | * connected. |
274 | */ | |
27a28d32 JK |
275 | *attached = false; |
276 | cable_type = info->prev_chg_type; | |
277 | info->prev_chg_type = MAX77843_MUIC_CHG_NONE; | |
278 | } else { | |
279 | ||
af57fa4d SR |
280 | /* |
281 | * The following state when charger cable is | |
282 | * connected on the GROUND accessory. | |
283 | */ | |
27a28d32 JK |
284 | *attached = true; |
285 | cable_type = MAX77843_MUIC_CHG_GND; | |
286 | info->prev_chg_type = MAX77843_MUIC_CHG_GND; | |
287 | } | |
288 | break; | |
289 | } | |
290 | ||
291 | if (chg_type == MAX77843_MUIC_CHG_NONE) { | |
292 | *attached = false; | |
293 | cable_type = info->prev_chg_type; | |
294 | info->prev_chg_type = MAX77843_MUIC_CHG_NONE; | |
295 | } else { | |
296 | *attached = true; | |
297 | cable_type = info->prev_chg_type = chg_type; | |
298 | } | |
299 | break; | |
300 | case MAX77843_CABLE_GROUP_ADC_GND: | |
301 | if (adc == MAX77843_MUIC_ADC_OPEN) { | |
302 | *attached = false; | |
303 | cable_type = info->prev_gnd_type; | |
304 | info->prev_gnd_type = MAX77843_MUIC_ADC_OPEN; | |
305 | } else { | |
306 | *attached = true; | |
307 | ||
af57fa4d SR |
308 | /* |
309 | * Offset|ADC1K|VBVolt| | |
27a28d32 JK |
310 | * 0x1| 0| 0| USB-HOST |
311 | * 0x1| 0| 1| USB-HOST with VB | |
312 | * 0x1| 1| 0| MHL | |
af57fa4d SR |
313 | * 0x1| 1| 1| MHL with VB |
314 | */ | |
27a28d32 JK |
315 | /* Get ADC1K register bit */ |
316 | gnd_type = (info->status[MAX77843_MUIC_STATUS1] & | |
317 | MAX77843_MUIC_STATUS1_ADC1K_MASK); | |
318 | ||
319 | /* Get VBVolt register bit */ | |
320 | gnd_type |= (info->status[MAX77843_MUIC_STATUS2] & | |
321 | MAX77843_MUIC_STATUS2_VBVOLT_MASK); | |
309a3e00 | 322 | gnd_type >>= MAX77843_MUIC_STATUS2_VBVOLT_SHIFT; |
27a28d32 JK |
323 | |
324 | /* Offset of GND cable */ | |
325 | gnd_type |= MAX77843_MUIC_GND_USB_HOST; | |
326 | cable_type = info->prev_gnd_type = gnd_type; | |
327 | } | |
328 | break; | |
329 | default: | |
330 | dev_err(info->dev, "Unknown cable group (%d)\n", group); | |
331 | cable_type = -EINVAL; | |
332 | break; | |
333 | } | |
334 | ||
335 | return cable_type; | |
336 | } | |
337 | ||
338 | static int max77843_muic_adc_gnd_handler(struct max77843_muic_info *info) | |
339 | { | |
340 | int ret, gnd_cable_type; | |
341 | bool attached; | |
342 | ||
343 | gnd_cable_type = max77843_muic_get_cable_type(info, | |
344 | MAX77843_CABLE_GROUP_ADC_GND, &attached); | |
345 | dev_dbg(info->dev, "external connector is %s (gnd:0x%02x)\n", | |
346 | attached ? "attached" : "detached", gnd_cable_type); | |
347 | ||
348 | switch (gnd_cable_type) { | |
349 | case MAX77843_MUIC_GND_USB_HOST: | |
350 | case MAX77843_MUIC_GND_USB_HOST_VB: | |
309a3e00 KK |
351 | ret = max77843_muic_set_path(info, |
352 | MAX77843_MUIC_CONTROL1_SW_USB, | |
353 | attached); | |
27a28d32 JK |
354 | if (ret < 0) |
355 | return ret; | |
356 | ||
8670b459 | 357 | extcon_set_state_sync(info->edev, EXTCON_USB_HOST, attached); |
27a28d32 JK |
358 | break; |
359 | case MAX77843_MUIC_GND_MHL_VB: | |
360 | case MAX77843_MUIC_GND_MHL: | |
309a3e00 KK |
361 | ret = max77843_muic_set_path(info, |
362 | MAX77843_MUIC_CONTROL1_SW_OPEN, | |
363 | attached); | |
27a28d32 JK |
364 | if (ret < 0) |
365 | return ret; | |
366 | ||
8670b459 | 367 | extcon_set_state_sync(info->edev, EXTCON_DISP_MHL, attached); |
27a28d32 JK |
368 | break; |
369 | default: | |
370 | dev_err(info->dev, "failed to detect %s accessory(gnd:0x%x)\n", | |
371 | attached ? "attached" : "detached", gnd_cable_type); | |
372 | return -EINVAL; | |
373 | } | |
374 | ||
375 | return 0; | |
376 | } | |
377 | ||
378 | static int max77843_muic_jig_handler(struct max77843_muic_info *info, | |
379 | int cable_type, bool attached) | |
380 | { | |
381 | int ret; | |
309a3e00 | 382 | u8 path = MAX77843_MUIC_CONTROL1_SW_OPEN; |
27a28d32 JK |
383 | |
384 | dev_dbg(info->dev, "external connector is %s (adc:0x%02x)\n", | |
385 | attached ? "attached" : "detached", cable_type); | |
386 | ||
387 | switch (cable_type) { | |
388 | case MAX77843_MUIC_ADC_FACTORY_MODE_USB_OFF: | |
27a28d32 | 389 | case MAX77843_MUIC_ADC_FACTORY_MODE_USB_ON: |
309a3e00 | 390 | path = MAX77843_MUIC_CONTROL1_SW_USB; |
27a28d32 JK |
391 | break; |
392 | case MAX77843_MUIC_ADC_FACTORY_MODE_UART_OFF: | |
309a3e00 | 393 | path = MAX77843_MUIC_CONTROL1_SW_UART; |
27a28d32 JK |
394 | break; |
395 | default: | |
41b3c015 | 396 | return -EINVAL; |
27a28d32 JK |
397 | } |
398 | ||
41b3c015 CC |
399 | ret = max77843_muic_set_path(info, path, attached); |
400 | if (ret < 0) | |
401 | return ret; | |
402 | ||
8670b459 | 403 | extcon_set_state_sync(info->edev, EXTCON_JIG, attached); |
41b3c015 | 404 | |
27a28d32 JK |
405 | return 0; |
406 | } | |
407 | ||
408 | static int max77843_muic_adc_handler(struct max77843_muic_info *info) | |
409 | { | |
410 | int ret, cable_type; | |
411 | bool attached; | |
412 | ||
413 | cable_type = max77843_muic_get_cable_type(info, | |
414 | MAX77843_CABLE_GROUP_ADC, &attached); | |
415 | ||
416 | dev_dbg(info->dev, | |
417 | "external connector is %s (adc:0x%02x, prev_adc:0x%x)\n", | |
418 | attached ? "attached" : "detached", cable_type, | |
419 | info->prev_cable_type); | |
420 | ||
421 | switch (cable_type) { | |
422 | case MAX77843_MUIC_ADC_GROUND: | |
423 | ret = max77843_muic_adc_gnd_handler(info); | |
424 | if (ret < 0) | |
425 | return ret; | |
426 | break; | |
427 | case MAX77843_MUIC_ADC_FACTORY_MODE_USB_OFF: | |
428 | case MAX77843_MUIC_ADC_FACTORY_MODE_USB_ON: | |
429 | case MAX77843_MUIC_ADC_FACTORY_MODE_UART_OFF: | |
430 | ret = max77843_muic_jig_handler(info, cable_type, attached); | |
431 | if (ret < 0) | |
432 | return ret; | |
433 | break; | |
434 | case MAX77843_MUIC_ADC_SEND_END_BUTTON: | |
435 | case MAX77843_MUIC_ADC_REMOTE_S1_BUTTON: | |
436 | case MAX77843_MUIC_ADC_REMOTE_S2_BUTTON: | |
437 | case MAX77843_MUIC_ADC_REMOTE_S3_BUTTON: | |
438 | case MAX77843_MUIC_ADC_REMOTE_S4_BUTTON: | |
439 | case MAX77843_MUIC_ADC_REMOTE_S5_BUTTON: | |
440 | case MAX77843_MUIC_ADC_REMOTE_S6_BUTTON: | |
441 | case MAX77843_MUIC_ADC_REMOTE_S7_BUTTON: | |
442 | case MAX77843_MUIC_ADC_REMOTE_S8_BUTTON: | |
443 | case MAX77843_MUIC_ADC_REMOTE_S9_BUTTON: | |
444 | case MAX77843_MUIC_ADC_REMOTE_S10_BUTTON: | |
445 | case MAX77843_MUIC_ADC_REMOTE_S11_BUTTON: | |
446 | case MAX77843_MUIC_ADC_REMOTE_S12_BUTTON: | |
447 | case MAX77843_MUIC_ADC_RESERVED_ACC_1: | |
448 | case MAX77843_MUIC_ADC_RESERVED_ACC_2: | |
449 | case MAX77843_MUIC_ADC_RESERVED_ACC_3: | |
450 | case MAX77843_MUIC_ADC_RESERVED_ACC_4: | |
451 | case MAX77843_MUIC_ADC_RESERVED_ACC_5: | |
452 | case MAX77843_MUIC_ADC_AUDIO_DEVICE_TYPE2: | |
453 | case MAX77843_MUIC_ADC_PHONE_POWERED_DEV: | |
454 | case MAX77843_MUIC_ADC_TTY_CONVERTER: | |
455 | case MAX77843_MUIC_ADC_UART_CABLE: | |
456 | case MAX77843_MUIC_ADC_CEA936A_TYPE1_CHG: | |
457 | case MAX77843_MUIC_ADC_AV_CABLE_NOLOAD: | |
458 | case MAX77843_MUIC_ADC_CEA936A_TYPE2_CHG: | |
459 | case MAX77843_MUIC_ADC_FACTORY_MODE_UART_ON: | |
460 | case MAX77843_MUIC_ADC_AUDIO_DEVICE_TYPE1: | |
461 | case MAX77843_MUIC_ADC_OPEN: | |
462 | dev_err(info->dev, | |
463 | "accessory is %s but it isn't used (adc:0x%x)\n", | |
464 | attached ? "attached" : "detached", cable_type); | |
465 | return -EAGAIN; | |
466 | default: | |
467 | dev_err(info->dev, | |
468 | "failed to detect %s accessory (adc:0x%x)\n", | |
469 | attached ? "attached" : "detached", cable_type); | |
470 | return -EINVAL; | |
471 | } | |
472 | ||
473 | return 0; | |
474 | } | |
475 | ||
476 | static int max77843_muic_chg_handler(struct max77843_muic_info *info) | |
477 | { | |
478 | int ret, chg_type, gnd_type; | |
479 | bool attached; | |
480 | ||
481 | chg_type = max77843_muic_get_cable_type(info, | |
482 | MAX77843_CABLE_GROUP_CHG, &attached); | |
483 | ||
484 | dev_dbg(info->dev, | |
485 | "external connector is %s(chg_type:0x%x, prev_chg_type:0x%x)\n", | |
486 | attached ? "attached" : "detached", | |
487 | chg_type, info->prev_chg_type); | |
488 | ||
489 | switch (chg_type) { | |
490 | case MAX77843_MUIC_CHG_USB: | |
309a3e00 KK |
491 | ret = max77843_muic_set_path(info, |
492 | MAX77843_MUIC_CONTROL1_SW_USB, | |
493 | attached); | |
27a28d32 JK |
494 | if (ret < 0) |
495 | return ret; | |
496 | ||
8670b459 CC |
497 | extcon_set_state_sync(info->edev, EXTCON_USB, attached); |
498 | extcon_set_state_sync(info->edev, EXTCON_CHG_USB_SDP, | |
8b45b6a0 | 499 | attached); |
27a28d32 JK |
500 | break; |
501 | case MAX77843_MUIC_CHG_DOWNSTREAM: | |
309a3e00 KK |
502 | ret = max77843_muic_set_path(info, |
503 | MAX77843_MUIC_CONTROL1_SW_OPEN, | |
504 | attached); | |
27a28d32 JK |
505 | if (ret < 0) |
506 | return ret; | |
507 | ||
8670b459 | 508 | extcon_set_state_sync(info->edev, EXTCON_CHG_USB_CDP, |
2a9de9c0 | 509 | attached); |
27a28d32 JK |
510 | break; |
511 | case MAX77843_MUIC_CHG_DEDICATED: | |
309a3e00 KK |
512 | ret = max77843_muic_set_path(info, |
513 | MAX77843_MUIC_CONTROL1_SW_OPEN, | |
514 | attached); | |
27a28d32 JK |
515 | if (ret < 0) |
516 | return ret; | |
517 | ||
8670b459 | 518 | extcon_set_state_sync(info->edev, EXTCON_CHG_USB_DCP, |
11eecf91 | 519 | attached); |
27a28d32 JK |
520 | break; |
521 | case MAX77843_MUIC_CHG_SPECIAL_500MA: | |
309a3e00 KK |
522 | ret = max77843_muic_set_path(info, |
523 | MAX77843_MUIC_CONTROL1_SW_OPEN, | |
524 | attached); | |
27a28d32 JK |
525 | if (ret < 0) |
526 | return ret; | |
527 | ||
8670b459 | 528 | extcon_set_state_sync(info->edev, EXTCON_CHG_USB_SLOW, |
2a9de9c0 | 529 | attached); |
27a28d32 JK |
530 | break; |
531 | case MAX77843_MUIC_CHG_SPECIAL_1A: | |
309a3e00 KK |
532 | ret = max77843_muic_set_path(info, |
533 | MAX77843_MUIC_CONTROL1_SW_OPEN, | |
534 | attached); | |
27a28d32 JK |
535 | if (ret < 0) |
536 | return ret; | |
537 | ||
8670b459 | 538 | extcon_set_state_sync(info->edev, EXTCON_CHG_USB_FAST, |
2a9de9c0 | 539 | attached); |
27a28d32 JK |
540 | break; |
541 | case MAX77843_MUIC_CHG_GND: | |
542 | gnd_type = max77843_muic_get_cable_type(info, | |
543 | MAX77843_CABLE_GROUP_ADC_GND, &attached); | |
544 | ||
545 | /* Charger cable on MHL accessory is attach or detach */ | |
546 | if (gnd_type == MAX77843_MUIC_GND_MHL_VB) | |
8670b459 | 547 | extcon_set_state_sync(info->edev, EXTCON_CHG_USB_DCP, |
11eecf91 | 548 | true); |
27a28d32 | 549 | else if (gnd_type == MAX77843_MUIC_GND_MHL) |
8670b459 | 550 | extcon_set_state_sync(info->edev, EXTCON_CHG_USB_DCP, |
11eecf91 | 551 | false); |
27a28d32 JK |
552 | break; |
553 | case MAX77843_MUIC_CHG_NONE: | |
554 | break; | |
555 | default: | |
556 | dev_err(info->dev, | |
557 | "failed to detect %s accessory (chg_type:0x%x)\n", | |
558 | attached ? "attached" : "detached", chg_type); | |
559 | ||
309a3e00 KK |
560 | max77843_muic_set_path(info, MAX77843_MUIC_CONTROL1_SW_OPEN, |
561 | attached); | |
27a28d32 JK |
562 | return -EINVAL; |
563 | } | |
564 | ||
565 | return 0; | |
566 | } | |
567 | ||
568 | static void max77843_muic_irq_work(struct work_struct *work) | |
569 | { | |
570 | struct max77843_muic_info *info = container_of(work, | |
571 | struct max77843_muic_info, irq_work); | |
bc1aadc1 | 572 | struct max77693_dev *max77843 = info->max77843; |
27a28d32 JK |
573 | int ret = 0; |
574 | ||
575 | mutex_lock(&info->mutex); | |
576 | ||
577 | ret = regmap_bulk_read(max77843->regmap_muic, | |
578 | MAX77843_MUIC_REG_STATUS1, info->status, | |
579 | MAX77843_MUIC_STATUS_NUM); | |
580 | if (ret) { | |
581 | dev_err(info->dev, "Cannot read STATUS registers\n"); | |
582 | mutex_unlock(&info->mutex); | |
583 | return; | |
584 | } | |
585 | ||
586 | if (info->irq_adc) { | |
587 | ret = max77843_muic_adc_handler(info); | |
588 | if (ret) | |
589 | dev_err(info->dev, "Unknown cable type\n"); | |
590 | info->irq_adc = false; | |
591 | } | |
592 | ||
593 | if (info->irq_chg) { | |
594 | ret = max77843_muic_chg_handler(info); | |
595 | if (ret) | |
596 | dev_err(info->dev, "Unknown charger type\n"); | |
597 | info->irq_chg = false; | |
598 | } | |
599 | ||
600 | mutex_unlock(&info->mutex); | |
601 | } | |
602 | ||
603 | static irqreturn_t max77843_muic_irq_handler(int irq, void *data) | |
604 | { | |
605 | struct max77843_muic_info *info = data; | |
606 | int i, irq_type = -1; | |
607 | ||
608 | for (i = 0; i < ARRAY_SIZE(max77843_muic_irqs); i++) | |
609 | if (irq == max77843_muic_irqs[i].virq) | |
610 | irq_type = max77843_muic_irqs[i].irq; | |
611 | ||
612 | switch (irq_type) { | |
613 | case MAX77843_MUIC_IRQ_INT1_ADC: | |
614 | case MAX77843_MUIC_IRQ_INT1_ADCERROR: | |
615 | case MAX77843_MUIC_IRQ_INT1_ADC1K: | |
616 | info->irq_adc = true; | |
617 | break; | |
618 | case MAX77843_MUIC_IRQ_INT2_CHGTYP: | |
619 | case MAX77843_MUIC_IRQ_INT2_CHGDETRUN: | |
620 | case MAX77843_MUIC_IRQ_INT2_DCDTMR: | |
621 | case MAX77843_MUIC_IRQ_INT2_DXOVP: | |
622 | case MAX77843_MUIC_IRQ_INT2_VBVOLT: | |
623 | info->irq_chg = true; | |
624 | break; | |
625 | case MAX77843_MUIC_IRQ_INT3_VBADC: | |
626 | case MAX77843_MUIC_IRQ_INT3_VDNMON: | |
627 | case MAX77843_MUIC_IRQ_INT3_DNRES: | |
628 | case MAX77843_MUIC_IRQ_INT3_MPNACK: | |
629 | case MAX77843_MUIC_IRQ_INT3_MRXBUFOW: | |
630 | case MAX77843_MUIC_IRQ_INT3_MRXTRF: | |
631 | case MAX77843_MUIC_IRQ_INT3_MRXPERR: | |
632 | case MAX77843_MUIC_IRQ_INT3_MRXRDY: | |
633 | break; | |
634 | default: | |
635 | dev_err(info->dev, "Cannot recognize IRQ(%d)\n", irq_type); | |
636 | break; | |
637 | } | |
638 | ||
639 | schedule_work(&info->irq_work); | |
640 | ||
641 | return IRQ_HANDLED; | |
642 | } | |
643 | ||
644 | static void max77843_muic_detect_cable_wq(struct work_struct *work) | |
645 | { | |
646 | struct max77843_muic_info *info = container_of(to_delayed_work(work), | |
647 | struct max77843_muic_info, wq_detcable); | |
bc1aadc1 | 648 | struct max77693_dev *max77843 = info->max77843; |
27a28d32 JK |
649 | int chg_type, adc, ret; |
650 | bool attached; | |
651 | ||
652 | mutex_lock(&info->mutex); | |
653 | ||
654 | ret = regmap_bulk_read(max77843->regmap_muic, | |
655 | MAX77843_MUIC_REG_STATUS1, info->status, | |
656 | MAX77843_MUIC_STATUS_NUM); | |
657 | if (ret) { | |
658 | dev_err(info->dev, "Cannot read STATUS registers\n"); | |
659 | goto err_cable_wq; | |
660 | } | |
661 | ||
662 | adc = max77843_muic_get_cable_type(info, | |
663 | MAX77843_CABLE_GROUP_ADC, &attached); | |
664 | if (attached && adc != MAX77843_MUIC_ADC_OPEN) { | |
665 | ret = max77843_muic_adc_handler(info); | |
666 | if (ret < 0) { | |
667 | dev_err(info->dev, "Cannot detect accessory\n"); | |
668 | goto err_cable_wq; | |
669 | } | |
670 | } | |
671 | ||
672 | chg_type = max77843_muic_get_cable_type(info, | |
673 | MAX77843_CABLE_GROUP_CHG, &attached); | |
674 | if (attached && chg_type != MAX77843_MUIC_CHG_NONE) { | |
675 | ret = max77843_muic_chg_handler(info); | |
676 | if (ret < 0) { | |
677 | dev_err(info->dev, "Cannot detect charger accessory\n"); | |
678 | goto err_cable_wq; | |
679 | } | |
680 | } | |
681 | ||
682 | err_cable_wq: | |
683 | mutex_unlock(&info->mutex); | |
684 | } | |
685 | ||
686 | static int max77843_muic_set_debounce_time(struct max77843_muic_info *info, | |
687 | enum max77843_muic_adc_debounce_time time) | |
688 | { | |
bc1aadc1 | 689 | struct max77693_dev *max77843 = info->max77843; |
d927c590 | 690 | int ret; |
27a28d32 JK |
691 | |
692 | switch (time) { | |
693 | case MAX77843_DEBOUNCE_TIME_5MS: | |
694 | case MAX77843_DEBOUNCE_TIME_10MS: | |
695 | case MAX77843_DEBOUNCE_TIME_25MS: | |
696 | case MAX77843_DEBOUNCE_TIME_38_62MS: | |
697 | ret = regmap_update_bits(max77843->regmap_muic, | |
698 | MAX77843_MUIC_REG_CONTROL4, | |
699 | MAX77843_MUIC_CONTROL4_ADCDBSET_MASK, | |
309a3e00 | 700 | time << MAX77843_MUIC_CONTROL4_ADCDBSET_SHIFT); |
27a28d32 JK |
701 | if (ret < 0) { |
702 | dev_err(info->dev, "Cannot write MUIC regmap\n"); | |
703 | return ret; | |
704 | } | |
705 | break; | |
706 | default: | |
707 | dev_err(info->dev, "Invalid ADC debounce time\n"); | |
708 | return -EINVAL; | |
709 | } | |
710 | ||
711 | return 0; | |
712 | } | |
713 | ||
bc1aadc1 | 714 | static int max77843_init_muic_regmap(struct max77693_dev *max77843) |
27a28d32 JK |
715 | { |
716 | int ret; | |
717 | ||
718 | max77843->i2c_muic = i2c_new_dummy(max77843->i2c->adapter, | |
719 | I2C_ADDR_MUIC); | |
720 | if (!max77843->i2c_muic) { | |
721 | dev_err(&max77843->i2c->dev, | |
722 | "Cannot allocate I2C device for MUIC\n"); | |
b9b518f5 | 723 | return -ENOMEM; |
27a28d32 JK |
724 | } |
725 | ||
726 | i2c_set_clientdata(max77843->i2c_muic, max77843); | |
727 | ||
728 | max77843->regmap_muic = devm_regmap_init_i2c(max77843->i2c_muic, | |
729 | &max77843_muic_regmap_config); | |
730 | if (IS_ERR(max77843->regmap_muic)) { | |
731 | ret = PTR_ERR(max77843->regmap_muic); | |
732 | goto err_muic_i2c; | |
733 | } | |
734 | ||
735 | ret = regmap_add_irq_chip(max77843->regmap_muic, max77843->irq, | |
736 | IRQF_TRIGGER_LOW | IRQF_ONESHOT | IRQF_SHARED, | |
737 | 0, &max77843_muic_irq_chip, &max77843->irq_data_muic); | |
738 | if (ret < 0) { | |
739 | dev_err(&max77843->i2c->dev, "Cannot add MUIC IRQ chip\n"); | |
740 | goto err_muic_i2c; | |
741 | } | |
742 | ||
743 | return 0; | |
744 | ||
745 | err_muic_i2c: | |
746 | i2c_unregister_device(max77843->i2c_muic); | |
747 | ||
748 | return ret; | |
749 | } | |
750 | ||
751 | static int max77843_muic_probe(struct platform_device *pdev) | |
752 | { | |
bc1aadc1 | 753 | struct max77693_dev *max77843 = dev_get_drvdata(pdev->dev.parent); |
27a28d32 JK |
754 | struct max77843_muic_info *info; |
755 | unsigned int id; | |
756 | int i, ret; | |
757 | ||
758 | info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL); | |
759 | if (!info) | |
760 | return -ENOMEM; | |
761 | ||
762 | info->dev = &pdev->dev; | |
763 | info->max77843 = max77843; | |
764 | ||
765 | platform_set_drvdata(pdev, info); | |
766 | mutex_init(&info->mutex); | |
767 | ||
768 | /* Initialize i2c and regmap */ | |
769 | ret = max77843_init_muic_regmap(max77843); | |
770 | if (ret) { | |
771 | dev_err(&pdev->dev, "Failed to init MUIC regmap\n"); | |
772 | return ret; | |
773 | } | |
774 | ||
775 | /* Turn off auto detection configuration */ | |
776 | ret = regmap_update_bits(max77843->regmap_muic, | |
777 | MAX77843_MUIC_REG_CONTROL4, | |
778 | MAX77843_MUIC_CONTROL4_USBAUTO_MASK | | |
779 | MAX77843_MUIC_CONTROL4_FCTAUTO_MASK, | |
780 | CONTROL4_AUTO_DISABLE); | |
781 | ||
782 | /* Initialize extcon device */ | |
783 | info->edev = devm_extcon_dev_allocate(&pdev->dev, | |
784 | max77843_extcon_cable); | |
785 | if (IS_ERR(info->edev)) { | |
786 | dev_err(&pdev->dev, "Failed to allocate memory for extcon\n"); | |
787 | ret = -ENODEV; | |
788 | goto err_muic_irq; | |
789 | } | |
790 | ||
791 | ret = devm_extcon_dev_register(&pdev->dev, info->edev); | |
792 | if (ret) { | |
793 | dev_err(&pdev->dev, "Failed to register extcon device\n"); | |
794 | goto err_muic_irq; | |
795 | } | |
796 | ||
797 | /* Set ADC debounce time */ | |
798 | max77843_muic_set_debounce_time(info, MAX77843_DEBOUNCE_TIME_25MS); | |
799 | ||
800 | /* Set initial path for UART */ | |
309a3e00 | 801 | max77843_muic_set_path(info, MAX77843_MUIC_CONTROL1_SW_UART, true); |
27a28d32 JK |
802 | |
803 | /* Check revision number of MUIC device */ | |
804 | ret = regmap_read(max77843->regmap_muic, MAX77843_MUIC_REG_ID, &id); | |
805 | if (ret < 0) { | |
806 | dev_err(&pdev->dev, "Failed to read revision number\n"); | |
807 | goto err_muic_irq; | |
808 | } | |
809 | dev_info(info->dev, "MUIC device ID : 0x%x\n", id); | |
810 | ||
811 | /* Support virtual irq domain for max77843 MUIC device */ | |
812 | INIT_WORK(&info->irq_work, max77843_muic_irq_work); | |
813 | ||
135d9f7d JK |
814 | /* Clear IRQ bits before request IRQs */ |
815 | ret = regmap_bulk_read(max77843->regmap_muic, | |
816 | MAX77843_MUIC_REG_INT1, info->status, | |
c4924e92 | 817 | MAX77843_MUIC_STATUS_NUM); |
135d9f7d JK |
818 | if (ret) { |
819 | dev_err(&pdev->dev, "Failed to Clear IRQ bits\n"); | |
820 | goto err_muic_irq; | |
821 | } | |
822 | ||
27a28d32 JK |
823 | for (i = 0; i < ARRAY_SIZE(max77843_muic_irqs); i++) { |
824 | struct max77843_muic_irq *muic_irq = &max77843_muic_irqs[i]; | |
c05c0d54 | 825 | int virq = 0; |
27a28d32 JK |
826 | |
827 | virq = regmap_irq_get_virq(max77843->irq_data_muic, | |
828 | muic_irq->irq); | |
829 | if (virq <= 0) { | |
830 | ret = -EINVAL; | |
831 | goto err_muic_irq; | |
832 | } | |
833 | muic_irq->virq = virq; | |
834 | ||
835 | ret = devm_request_threaded_irq(&pdev->dev, virq, NULL, | |
836 | max77843_muic_irq_handler, IRQF_NO_SUSPEND, | |
837 | muic_irq->name, info); | |
838 | if (ret) { | |
839 | dev_err(&pdev->dev, | |
840 | "Failed to request irq (IRQ: %d, error: %d)\n", | |
841 | muic_irq->irq, ret); | |
842 | goto err_muic_irq; | |
843 | } | |
844 | } | |
845 | ||
846 | /* Detect accessory after completing the initialization of platform */ | |
847 | INIT_DELAYED_WORK(&info->wq_detcable, max77843_muic_detect_cable_wq); | |
848 | queue_delayed_work(system_power_efficient_wq, | |
849 | &info->wq_detcable, msecs_to_jiffies(DELAY_MS_DEFAULT)); | |
850 | ||
851 | return 0; | |
852 | ||
853 | err_muic_irq: | |
854 | regmap_del_irq_chip(max77843->irq, max77843->irq_data_muic); | |
855 | i2c_unregister_device(max77843->i2c_muic); | |
856 | ||
857 | return ret; | |
858 | } | |
859 | ||
860 | static int max77843_muic_remove(struct platform_device *pdev) | |
861 | { | |
862 | struct max77843_muic_info *info = platform_get_drvdata(pdev); | |
bc1aadc1 | 863 | struct max77693_dev *max77843 = info->max77843; |
27a28d32 JK |
864 | |
865 | cancel_work_sync(&info->irq_work); | |
866 | regmap_del_irq_chip(max77843->irq, max77843->irq_data_muic); | |
867 | i2c_unregister_device(max77843->i2c_muic); | |
868 | ||
869 | return 0; | |
870 | } | |
871 | ||
872 | static const struct platform_device_id max77843_muic_id[] = { | |
873 | { "max77843-muic", }, | |
874 | { /* sentinel */ }, | |
875 | }; | |
876 | MODULE_DEVICE_TABLE(platform, max77843_muic_id); | |
877 | ||
878 | static struct platform_driver max77843_muic_driver = { | |
879 | .driver = { | |
880 | .name = "max77843-muic", | |
881 | }, | |
882 | .probe = max77843_muic_probe, | |
883 | .remove = max77843_muic_remove, | |
884 | .id_table = max77843_muic_id, | |
885 | }; | |
886 | ||
887 | static int __init max77843_muic_init(void) | |
888 | { | |
889 | return platform_driver_register(&max77843_muic_driver); | |
890 | } | |
891 | subsys_initcall(max77843_muic_init); | |
892 | ||
893 | MODULE_DESCRIPTION("Maxim MAX77843 Extcon driver"); | |
894 | MODULE_AUTHOR("Jaewon Kim <jaewon02.kim@samsung.com>"); | |
895 | MODULE_LICENSE("GPL"); |