2 * extcon-max77693.c - MAX77693 extcon driver to support MAX77693 MUIC
4 * Copyright (C) 2012 Samsung Electrnoics
5 * Chanwoo Choi <cw00.choi@samsung.com>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
18 #include <linux/kernel.h>
19 #include <linux/module.h>
20 #include <linux/i2c.h>
21 #include <linux/slab.h>
22 #include <linux/input.h>
23 #include <linux/interrupt.h>
24 #include <linux/err.h>
25 #include <linux/platform_device.h>
26 #include <linux/mfd/max77693.h>
27 #include <linux/mfd/max77693-common.h>
28 #include <linux/mfd/max77693-private.h>
29 #include <linux/extcon.h>
30 #include <linux/regmap.h>
31 #include <linux/irqdomain.h>
33 #define DEV_NAME "max77693-muic"
34 #define DELAY_MS_DEFAULT 20000 /* unit: millisecond */
37 * Default value of MAX77693 register to bring up MUIC device.
38 * If user don't set some initial value for MUIC device through platform data,
39 * extcon-max77693 driver use 'default_init_data' to bring up base operation
40 * of MAX77693 MUIC device.
42 static struct max77693_reg_data default_init_data
[] = {
44 /* STATUS2 - [3]ChgDetRun */
45 .addr
= MAX77693_MUIC_REG_STATUS2
,
46 .data
= MAX77693_STATUS2_CHGDETRUN_MASK
,
48 /* INTMASK1 - Unmask [3]ADC1KM,[0]ADCM */
49 .addr
= MAX77693_MUIC_REG_INTMASK1
,
50 .data
= INTMASK1_ADC1K_MASK
53 /* INTMASK2 - Unmask [0]ChgTypM */
54 .addr
= MAX77693_MUIC_REG_INTMASK2
,
55 .data
= INTMASK2_CHGTYP_MASK
,
57 /* INTMASK3 - Mask all of interrupts */
58 .addr
= MAX77693_MUIC_REG_INTMASK3
,
62 .addr
= MAX77693_MUIC_REG_CDETCTRL2
,
63 .data
= CDETCTRL2_VIDRMEN_MASK
64 | CDETCTRL2_DXOVPEN_MASK
,
68 enum max77693_muic_adc_debounce_time
{
69 ADC_DEBOUNCE_TIME_5MS
= 0,
70 ADC_DEBOUNCE_TIME_10MS
,
71 ADC_DEBOUNCE_TIME_25MS
,
72 ADC_DEBOUNCE_TIME_38_62MS
,
75 struct max77693_muic_info
{
77 struct max77693_dev
*max77693
;
78 struct extcon_dev
*edev
;
80 int prev_cable_type_gnd
;
86 struct work_struct irq_work
;
90 * Use delayed workqueue to detect cable state and then
91 * notify cable state to notifiee/platform through uevent.
92 * After completing the booting of platform, the extcon provider
93 * driver should notify cable state to upper layer.
95 struct delayed_work wq_detcable
;
97 /* Button of dock device */
98 struct input_dev
*dock
;
101 * Default usb/uart path whether UART/USB or AUX_UART/AUX_USB
102 * h/w path of COMP2/COMN1 on CONTROL1 register.
108 enum max77693_muic_cable_group
{
109 MAX77693_CABLE_GROUP_ADC
= 0,
110 MAX77693_CABLE_GROUP_ADC_GND
,
111 MAX77693_CABLE_GROUP_CHG
,
112 MAX77693_CABLE_GROUP_VBVOLT
,
115 enum max77693_muic_charger_type
{
116 MAX77693_CHARGER_TYPE_NONE
= 0,
117 MAX77693_CHARGER_TYPE_USB
,
118 MAX77693_CHARGER_TYPE_DOWNSTREAM_PORT
,
119 MAX77693_CHARGER_TYPE_DEDICATED_CHG
,
120 MAX77693_CHARGER_TYPE_APPLE_500MA
,
121 MAX77693_CHARGER_TYPE_APPLE_1A_2A
,
122 MAX77693_CHARGER_TYPE_DEAD_BATTERY
= 7,
126 * struct max77693_muic_irq
127 * @irq: the index of irq list of MUIC device.
128 * @name: the name of irq.
129 * @virq: the virtual irq to use irq domain
131 struct max77693_muic_irq
{
137 static struct max77693_muic_irq muic_irqs
[] = {
138 { MAX77693_MUIC_IRQ_INT1_ADC
, "muic-ADC" },
139 { MAX77693_MUIC_IRQ_INT1_ADC_LOW
, "muic-ADCLOW" },
140 { MAX77693_MUIC_IRQ_INT1_ADC_ERR
, "muic-ADCError" },
141 { MAX77693_MUIC_IRQ_INT1_ADC1K
, "muic-ADC1K" },
142 { MAX77693_MUIC_IRQ_INT2_CHGTYP
, "muic-CHGTYP" },
143 { MAX77693_MUIC_IRQ_INT2_CHGDETREUN
, "muic-CHGDETREUN" },
144 { MAX77693_MUIC_IRQ_INT2_DCDTMR
, "muic-DCDTMR" },
145 { MAX77693_MUIC_IRQ_INT2_DXOVP
, "muic-DXOVP" },
146 { MAX77693_MUIC_IRQ_INT2_VBVOLT
, "muic-VBVOLT" },
147 { MAX77693_MUIC_IRQ_INT2_VIDRM
, "muic-VIDRM" },
148 { MAX77693_MUIC_IRQ_INT3_EOC
, "muic-EOC" },
149 { MAX77693_MUIC_IRQ_INT3_CGMBC
, "muic-CGMBC" },
150 { MAX77693_MUIC_IRQ_INT3_OVP
, "muic-OVP" },
151 { MAX77693_MUIC_IRQ_INT3_MBCCHG_ERR
, "muic-MBCCHG_ERR" },
152 { MAX77693_MUIC_IRQ_INT3_CHG_ENABLED
, "muic-CHG_ENABLED" },
153 { MAX77693_MUIC_IRQ_INT3_BAT_DET
, "muic-BAT_DET" },
156 /* Define supported accessory type */
157 enum max77693_muic_acc_type
{
158 MAX77693_MUIC_ADC_GROUND
= 0x0,
159 MAX77693_MUIC_ADC_SEND_END_BUTTON
,
160 MAX77693_MUIC_ADC_REMOTE_S1_BUTTON
,
161 MAX77693_MUIC_ADC_REMOTE_S2_BUTTON
,
162 MAX77693_MUIC_ADC_REMOTE_S3_BUTTON
,
163 MAX77693_MUIC_ADC_REMOTE_S4_BUTTON
,
164 MAX77693_MUIC_ADC_REMOTE_S5_BUTTON
,
165 MAX77693_MUIC_ADC_REMOTE_S6_BUTTON
,
166 MAX77693_MUIC_ADC_REMOTE_S7_BUTTON
,
167 MAX77693_MUIC_ADC_REMOTE_S8_BUTTON
,
168 MAX77693_MUIC_ADC_REMOTE_S9_BUTTON
,
169 MAX77693_MUIC_ADC_REMOTE_S10_BUTTON
,
170 MAX77693_MUIC_ADC_REMOTE_S11_BUTTON
,
171 MAX77693_MUIC_ADC_REMOTE_S12_BUTTON
,
172 MAX77693_MUIC_ADC_RESERVED_ACC_1
,
173 MAX77693_MUIC_ADC_RESERVED_ACC_2
,
174 MAX77693_MUIC_ADC_RESERVED_ACC_3
,
175 MAX77693_MUIC_ADC_RESERVED_ACC_4
,
176 MAX77693_MUIC_ADC_RESERVED_ACC_5
,
177 MAX77693_MUIC_ADC_CEA936_AUDIO
,
178 MAX77693_MUIC_ADC_PHONE_POWERED_DEV
,
179 MAX77693_MUIC_ADC_TTY_CONVERTER
,
180 MAX77693_MUIC_ADC_UART_CABLE
,
181 MAX77693_MUIC_ADC_CEA936A_TYPE1_CHG
,
182 MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF
,
183 MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON
,
184 MAX77693_MUIC_ADC_AV_CABLE_NOLOAD
,
185 MAX77693_MUIC_ADC_CEA936A_TYPE2_CHG
,
186 MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF
,
187 MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON
,
188 MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE
,
189 MAX77693_MUIC_ADC_OPEN
,
191 /* The below accessories have same ADC value so ADCLow and
192 ADC1K bit is used to separate specific accessory */
193 /* ADC|VBVolot|ADCLow|ADC1K| */
194 MAX77693_MUIC_GND_USB_HOST
= 0x100, /* 0x0| 0| 0| 0| */
195 MAX77693_MUIC_GND_USB_HOST_VB
= 0x104, /* 0x0| 1| 0| 0| */
196 MAX77693_MUIC_GND_AV_CABLE_LOAD
= 0x102,/* 0x0| 0| 1| 0| */
197 MAX77693_MUIC_GND_MHL
= 0x103, /* 0x0| 0| 1| 1| */
198 MAX77693_MUIC_GND_MHL_VB
= 0x107, /* 0x0| 1| 1| 1| */
202 * MAX77693 MUIC device support below list of accessories(external connector)
204 static const unsigned int max77693_extcon_cable
[] = {
210 EXTCON_CHARGE_DOWNSTREAM
,
218 * max77693_muic_set_debounce_time - Set the debounce time of ADC
219 * @info: the instance including private data of max77693 MUIC
220 * @time: the debounce time of ADC
222 static int max77693_muic_set_debounce_time(struct max77693_muic_info
*info
,
223 enum max77693_muic_adc_debounce_time time
)
228 case ADC_DEBOUNCE_TIME_5MS
:
229 case ADC_DEBOUNCE_TIME_10MS
:
230 case ADC_DEBOUNCE_TIME_25MS
:
231 case ADC_DEBOUNCE_TIME_38_62MS
:
233 * Don't touch BTLDset, JIGset when you want to change adc
234 * debounce time. If it writes other than 0 to BTLDset, JIGset
235 * muic device will be reset and loose current state.
237 ret
= regmap_write(info
->max77693
->regmap_muic
,
238 MAX77693_MUIC_REG_CTRL3
,
239 time
<< MAX77693_CONTROL3_ADCDBSET_SHIFT
);
241 dev_err(info
->dev
, "failed to set ADC debounce time\n");
246 dev_err(info
->dev
, "invalid ADC debounce time\n");
254 * max77693_muic_set_path - Set hardware line according to attached cable
255 * @info: the instance including private data of max77693 MUIC
256 * @value: the path according to attached cable
257 * @attached: the state of cable (true:attached, false:detached)
259 * The max77693 MUIC device share outside H/W line among a varity of cables
260 * so, this function set internal path of H/W line according to the type of
263 static int max77693_muic_set_path(struct max77693_muic_info
*info
,
264 u8 val
, bool attached
)
267 unsigned int ctrl1
, ctrl2
= 0;
272 ctrl1
= MAX77693_CONTROL1_SW_OPEN
;
274 ret
= regmap_update_bits(info
->max77693
->regmap_muic
,
275 MAX77693_MUIC_REG_CTRL1
, COMP_SW_MASK
, ctrl1
);
277 dev_err(info
->dev
, "failed to update MUIC register\n");
282 ctrl2
|= MAX77693_CONTROL2_CPEN_MASK
; /* LowPwr=0, CPEn=1 */
284 ctrl2
|= MAX77693_CONTROL2_LOWPWR_MASK
; /* LowPwr=1, CPEn=0 */
286 ret
= regmap_update_bits(info
->max77693
->regmap_muic
,
287 MAX77693_MUIC_REG_CTRL2
,
288 MAX77693_CONTROL2_LOWPWR_MASK
| MAX77693_CONTROL2_CPEN_MASK
,
291 dev_err(info
->dev
, "failed to update MUIC register\n");
296 "CONTROL1 : 0x%02x, CONTROL2 : 0x%02x, state : %s\n",
297 ctrl1
, ctrl2
, attached
? "attached" : "detached");
303 * max77693_muic_get_cable_type - Return cable type and check cable state
304 * @info: the instance including private data of max77693 MUIC
305 * @group: the path according to attached cable
306 * @attached: store cable state and return
308 * This function check the cable state either attached or detached,
309 * and then divide precise type of cable according to cable group.
310 * - MAX77693_CABLE_GROUP_ADC
311 * - MAX77693_CABLE_GROUP_ADC_GND
312 * - MAX77693_CABLE_GROUP_CHG
313 * - MAX77693_CABLE_GROUP_VBVOLT
315 static int max77693_muic_get_cable_type(struct max77693_muic_info
*info
,
316 enum max77693_muic_cable_group group
, bool *attached
)
326 case MAX77693_CABLE_GROUP_ADC
:
328 * Read ADC value to check cable type and decide cable state
329 * according to cable type
331 adc
= info
->status
[0] & MAX77693_STATUS1_ADC_MASK
;
332 adc
>>= MAX77693_STATUS1_ADC_SHIFT
;
335 * Check current cable state/cable type and store cable type
336 * (info->prev_cable_type) for handling cable when cable is
339 if (adc
== MAX77693_MUIC_ADC_OPEN
) {
342 cable_type
= info
->prev_cable_type
;
343 info
->prev_cable_type
= MAX77693_MUIC_ADC_OPEN
;
347 cable_type
= info
->prev_cable_type
= adc
;
350 case MAX77693_CABLE_GROUP_ADC_GND
:
352 * Read ADC value to check cable type and decide cable state
353 * according to cable type
355 adc
= info
->status
[0] & MAX77693_STATUS1_ADC_MASK
;
356 adc
>>= MAX77693_STATUS1_ADC_SHIFT
;
359 * Check current cable state/cable type and store cable type
360 * (info->prev_cable_type/_gnd) for handling cable when cable
363 if (adc
== MAX77693_MUIC_ADC_OPEN
) {
366 cable_type
= info
->prev_cable_type_gnd
;
367 info
->prev_cable_type_gnd
= MAX77693_MUIC_ADC_OPEN
;
371 adclow
= info
->status
[0] & MAX77693_STATUS1_ADCLOW_MASK
;
372 adclow
>>= MAX77693_STATUS1_ADCLOW_SHIFT
;
373 adc1k
= info
->status
[0] & MAX77693_STATUS1_ADC1K_MASK
;
374 adc1k
>>= MAX77693_STATUS1_ADC1K_SHIFT
;
376 vbvolt
= info
->status
[1] & MAX77693_STATUS2_VBVOLT_MASK
;
377 vbvolt
>>= MAX77693_STATUS2_VBVOLT_SHIFT
;
380 * [0x1|VBVolt|ADCLow|ADC1K]
381 * [0x1| 0| 0| 0] USB_HOST
382 * [0x1| 1| 0| 0] USB_HSOT_VB
383 * [0x1| 0| 1| 0] Audio Video cable with load
384 * [0x1| 0| 1| 1] MHL without charging cable
385 * [0x1| 1| 1| 1] MHL with charging cable
387 cable_type
= ((0x1 << 8)
392 info
->prev_cable_type
= adc
;
393 info
->prev_cable_type_gnd
= cable_type
;
397 case MAX77693_CABLE_GROUP_CHG
:
399 * Read charger type to check cable type and decide cable state
400 * according to type of charger cable.
402 chg_type
= info
->status
[1] & MAX77693_STATUS2_CHGTYP_MASK
;
403 chg_type
>>= MAX77693_STATUS2_CHGTYP_SHIFT
;
405 if (chg_type
== MAX77693_CHARGER_TYPE_NONE
) {
408 cable_type
= info
->prev_chg_type
;
409 info
->prev_chg_type
= MAX77693_CHARGER_TYPE_NONE
;
414 * Check current cable state/cable type and store cable
415 * type(info->prev_chg_type) for handling cable when
416 * charger cable is detached.
418 cable_type
= info
->prev_chg_type
= chg_type
;
422 case MAX77693_CABLE_GROUP_VBVOLT
:
424 * Read ADC value to check cable type and decide cable state
425 * according to cable type
427 adc
= info
->status
[0] & MAX77693_STATUS1_ADC_MASK
;
428 adc
>>= MAX77693_STATUS1_ADC_SHIFT
;
429 chg_type
= info
->status
[1] & MAX77693_STATUS2_CHGTYP_MASK
;
430 chg_type
>>= MAX77693_STATUS2_CHGTYP_SHIFT
;
432 if (adc
== MAX77693_MUIC_ADC_OPEN
433 && chg_type
== MAX77693_CHARGER_TYPE_NONE
)
439 * Read vbvolt field, if vbvolt is 1,
440 * this cable is used for charging.
442 vbvolt
= info
->status
[1] & MAX77693_STATUS2_VBVOLT_MASK
;
443 vbvolt
>>= MAX77693_STATUS2_VBVOLT_SHIFT
;
448 dev_err(info
->dev
, "Unknown cable group (%d)\n", group
);
449 cable_type
= -EINVAL
;
456 static int max77693_muic_dock_handler(struct max77693_muic_info
*info
,
457 int cable_type
, bool attached
)
462 unsigned int dock_id
;
465 "external connector is %s (adc:0x%02x)\n",
466 attached
? "attached" : "detached", cable_type
);
468 switch (cable_type
) {
469 case MAX77693_MUIC_ADC_RESERVED_ACC_3
: /* Dock-Smart */
471 * Check power cable whether attached or detached state.
472 * The Dock-Smart device need surely external power supply.
473 * If power cable(USB/TA) isn't connected to Dock device,
474 * user can't use Dock-Smart for desktop mode.
476 vbvolt
= max77693_muic_get_cable_type(info
,
477 MAX77693_CABLE_GROUP_VBVOLT
, &cable_attached
);
478 if (attached
&& !vbvolt
) {
480 "Cannot detect external power supply\n");
485 * Notify Dock/MHL state.
486 * - Dock device include three type of cable which
487 * are HDMI, USB for mouse/keyboard and micro-usb port
488 * for USB/TA cable. Dock device need always exteranl
489 * power supply(USB/TA cable through micro-usb cable). Dock
490 * device support screen output of target to separate
491 * monitor and mouse/keyboard for desktop mode.
493 * Features of 'USB/TA cable with Dock device'
495 * - Support external output feature of audio
496 * - Support charging through micro-usb port without data
497 * connection if TA cable is connected to target.
498 * - Support charging and data connection through micro-usb port
499 * if USB cable is connected between target and host
501 * - Support OTG(On-The-Go) device (Ex: Mouse/Keyboard)
503 ret
= max77693_muic_set_path(info
, info
->path_usb
, attached
);
507 extcon_set_cable_state_(info
->edev
, EXTCON_DOCK
, attached
);
508 extcon_set_cable_state_(info
->edev
, EXTCON_MHL
, attached
);
510 case MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE
: /* Dock-Desk */
511 dock_id
= EXTCON_DOCK
;
513 case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD
: /* Dock-Audio */
514 dock_id
= EXTCON_DOCK
;
516 extcon_set_cable_state_(info
->edev
, EXTCON_USB
, false);
519 dev_err(info
->dev
, "failed to detect %s dock device\n",
520 attached
? "attached" : "detached");
524 /* Dock-Car/Desk/Audio, PATH:AUDIO */
525 ret
= max77693_muic_set_path(info
, MAX77693_CONTROL1_SW_AUDIO
,
529 extcon_set_cable_state_(info
->edev
, dock_id
, attached
);
535 static int max77693_muic_dock_button_handler(struct max77693_muic_info
*info
,
536 int button_type
, bool attached
)
538 struct input_dev
*dock
= info
->dock
;
541 switch (button_type
) {
542 case MAX77693_MUIC_ADC_REMOTE_S3_BUTTON
-1
543 ... MAX77693_MUIC_ADC_REMOTE_S3_BUTTON
+1:
545 code
= KEY_PREVIOUSSONG
;
547 case MAX77693_MUIC_ADC_REMOTE_S7_BUTTON
-1
548 ... MAX77693_MUIC_ADC_REMOTE_S7_BUTTON
+1:
552 case MAX77693_MUIC_ADC_REMOTE_S9_BUTTON
:
554 code
= KEY_VOLUMEDOWN
;
556 case MAX77693_MUIC_ADC_REMOTE_S10_BUTTON
:
560 case MAX77693_MUIC_ADC_REMOTE_S12_BUTTON
-1
561 ... MAX77693_MUIC_ADC_REMOTE_S12_BUTTON
+1:
562 /* DOCK_KEY_PLAY_PAUSE */
563 code
= KEY_PLAYPAUSE
;
567 "failed to detect %s key (adc:0x%x)\n",
568 attached
? "pressed" : "released", button_type
);
572 input_event(dock
, EV_KEY
, code
, attached
);
578 static int max77693_muic_adc_ground_handler(struct max77693_muic_info
*info
)
584 cable_type_gnd
= max77693_muic_get_cable_type(info
,
585 MAX77693_CABLE_GROUP_ADC_GND
, &attached
);
587 switch (cable_type_gnd
) {
588 case MAX77693_MUIC_GND_USB_HOST
:
589 case MAX77693_MUIC_GND_USB_HOST_VB
:
590 /* USB_HOST, PATH: AP_USB */
591 ret
= max77693_muic_set_path(info
, MAX77693_CONTROL1_SW_USB
,
595 extcon_set_cable_state_(info
->edev
, EXTCON_USB_HOST
, attached
);
597 case MAX77693_MUIC_GND_AV_CABLE_LOAD
:
598 /* Audio Video Cable with load, PATH:AUDIO */
599 ret
= max77693_muic_set_path(info
, MAX77693_CONTROL1_SW_AUDIO
,
603 extcon_set_cable_state_(info
->edev
, EXTCON_USB
, attached
);
605 case MAX77693_MUIC_GND_MHL
:
606 case MAX77693_MUIC_GND_MHL_VB
:
607 /* MHL or MHL with USB/TA cable */
608 extcon_set_cable_state_(info
->edev
, EXTCON_MHL
, attached
);
611 dev_err(info
->dev
, "failed to detect %s cable of gnd type\n",
612 attached
? "attached" : "detached");
619 static int max77693_muic_jig_handler(struct max77693_muic_info
*info
,
620 int cable_type
, bool attached
)
623 u8 path
= MAX77693_CONTROL1_SW_OPEN
;
626 "external connector is %s (adc:0x%02x)\n",
627 attached
? "attached" : "detached", cable_type
);
629 switch (cable_type
) {
630 case MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF
: /* ADC_JIG_USB_OFF */
631 case MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON
: /* ADC_JIG_USB_ON */
633 path
= MAX77693_CONTROL1_SW_USB
;
635 case MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF
: /* ADC_JIG_UART_OFF */
636 case MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON
: /* ADC_JIG_UART_ON */
638 path
= MAX77693_CONTROL1_SW_UART
;
641 dev_err(info
->dev
, "failed to detect %s jig cable\n",
642 attached
? "attached" : "detached");
646 ret
= max77693_muic_set_path(info
, path
, attached
);
650 extcon_set_cable_state_(info
->edev
, EXTCON_JIG
, attached
);
655 static int max77693_muic_adc_handler(struct max77693_muic_info
*info
)
662 /* Check accessory state which is either detached or attached */
663 cable_type
= max77693_muic_get_cable_type(info
,
664 MAX77693_CABLE_GROUP_ADC
, &attached
);
667 "external connector is %s (adc:0x%02x, prev_adc:0x%x)\n",
668 attached
? "attached" : "detached", cable_type
,
669 info
->prev_cable_type
);
671 switch (cable_type
) {
672 case MAX77693_MUIC_ADC_GROUND
:
673 /* USB_HOST/MHL/Audio */
674 max77693_muic_adc_ground_handler(info
);
676 case MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF
:
677 case MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON
:
678 case MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF
:
679 case MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON
:
681 ret
= max77693_muic_jig_handler(info
, cable_type
, attached
);
685 case MAX77693_MUIC_ADC_RESERVED_ACC_3
: /* Dock-Smart */
686 case MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE
: /* Dock-Desk */
687 case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD
: /* Dock-Audio */
691 * The MAX77693 MUIC device can detect total 34 cable type
692 * except of charger cable and MUIC device didn't define
693 * specfic role of cable in the range of from 0x01 to 0x12
694 * of ADC value. So, can use/define cable with no role according
695 * to schema of hardware board.
697 ret
= max77693_muic_dock_handler(info
, cable_type
, attached
);
701 case MAX77693_MUIC_ADC_REMOTE_S3_BUTTON
: /* DOCK_KEY_PREV */
702 case MAX77693_MUIC_ADC_REMOTE_S7_BUTTON
: /* DOCK_KEY_NEXT */
703 case MAX77693_MUIC_ADC_REMOTE_S9_BUTTON
: /* DOCK_VOL_DOWN */
704 case MAX77693_MUIC_ADC_REMOTE_S10_BUTTON
: /* DOCK_VOL_UP */
705 case MAX77693_MUIC_ADC_REMOTE_S12_BUTTON
: /* DOCK_KEY_PLAY_PAUSE */
707 * Button of DOCK device
708 * - the Prev/Next/Volume Up/Volume Down/Play-Pause button
710 * The MAX77693 MUIC device can detect total 34 cable type
711 * except of charger cable and MUIC device didn't define
712 * specfic role of cable in the range of from 0x01 to 0x12
713 * of ADC value. So, can use/define cable with no role according
714 * to schema of hardware board.
717 button_type
= info
->prev_button_type
= cable_type
;
719 button_type
= info
->prev_button_type
;
721 ret
= max77693_muic_dock_button_handler(info
, button_type
,
726 case MAX77693_MUIC_ADC_SEND_END_BUTTON
:
727 case MAX77693_MUIC_ADC_REMOTE_S1_BUTTON
:
728 case MAX77693_MUIC_ADC_REMOTE_S2_BUTTON
:
729 case MAX77693_MUIC_ADC_REMOTE_S4_BUTTON
:
730 case MAX77693_MUIC_ADC_REMOTE_S5_BUTTON
:
731 case MAX77693_MUIC_ADC_REMOTE_S6_BUTTON
:
732 case MAX77693_MUIC_ADC_REMOTE_S8_BUTTON
:
733 case MAX77693_MUIC_ADC_REMOTE_S11_BUTTON
:
734 case MAX77693_MUIC_ADC_RESERVED_ACC_1
:
735 case MAX77693_MUIC_ADC_RESERVED_ACC_2
:
736 case MAX77693_MUIC_ADC_RESERVED_ACC_4
:
737 case MAX77693_MUIC_ADC_RESERVED_ACC_5
:
738 case MAX77693_MUIC_ADC_CEA936_AUDIO
:
739 case MAX77693_MUIC_ADC_PHONE_POWERED_DEV
:
740 case MAX77693_MUIC_ADC_TTY_CONVERTER
:
741 case MAX77693_MUIC_ADC_UART_CABLE
:
742 case MAX77693_MUIC_ADC_CEA936A_TYPE1_CHG
:
743 case MAX77693_MUIC_ADC_CEA936A_TYPE2_CHG
:
745 * This accessory isn't used in general case if it is specially
746 * needed to detect additional accessory, should implement
747 * proper operation when this accessory is attached/detached.
750 "accessory is %s but it isn't used (adc:0x%x)\n",
751 attached
? "attached" : "detached", cable_type
);
755 "failed to detect %s accessory (adc:0x%x)\n",
756 attached
? "attached" : "detached", cable_type
);
763 static int max77693_muic_chg_handler(struct max77693_muic_info
*info
)
772 chg_type
= max77693_muic_get_cable_type(info
,
773 MAX77693_CABLE_GROUP_CHG
, &attached
);
776 "external connector is %s(chg_type:0x%x, prev_chg_type:0x%x)\n",
777 attached
? "attached" : "detached",
778 chg_type
, info
->prev_chg_type
);
781 case MAX77693_CHARGER_TYPE_USB
:
782 case MAX77693_CHARGER_TYPE_DEDICATED_CHG
:
783 case MAX77693_CHARGER_TYPE_NONE
:
784 /* Check MAX77693_CABLE_GROUP_ADC_GND type */
785 cable_type_gnd
= max77693_muic_get_cable_type(info
,
786 MAX77693_CABLE_GROUP_ADC_GND
,
788 switch (cable_type_gnd
) {
789 case MAX77693_MUIC_GND_MHL
:
790 case MAX77693_MUIC_GND_MHL_VB
:
792 * MHL cable with USB/TA cable
793 * - MHL cable include two port(HDMI line and separate
794 * micro-usb port. When the target connect MHL cable,
795 * extcon driver check whether USB/TA cable is
796 * connected. If USB/TA cable is connected, extcon
797 * driver notify state to notifiee for charging battery.
799 * Features of 'USB/TA with MHL cable'
801 * - Support charging through micro-usb port without
804 extcon_set_cable_state_(info
->edev
, EXTCON_TA
, attached
);
806 extcon_set_cable_state_(info
->edev
, EXTCON_MHL
,
811 /* Check MAX77693_CABLE_GROUP_ADC type */
812 cable_type
= max77693_muic_get_cable_type(info
,
813 MAX77693_CABLE_GROUP_ADC
,
815 switch (cable_type
) {
816 case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD
: /* Dock-Audio */
818 * Dock-Audio device with USB/TA cable
819 * - Dock device include two port(Dock-Audio and micro-
820 * usb port). When the target connect Dock-Audio device,
821 * extcon driver check whether USB/TA cable is connected
822 * or not. If USB/TA cable is connected, extcon driver
823 * notify state to notifiee for charging battery.
825 * Features of 'USB/TA cable with Dock-Audio device'
826 * - Support external output feature of audio.
827 * - Support charging through micro-usb port without
830 extcon_set_cable_state_(info
->edev
, EXTCON_USB
,
834 extcon_set_cable_state_(info
->edev
, EXTCON_DOCK
,
837 case MAX77693_MUIC_ADC_RESERVED_ACC_3
: /* Dock-Smart */
839 * Dock-Smart device with USB/TA cable
840 * - Dock-Desk device include three type of cable which
841 * are HDMI, USB for mouse/keyboard and micro-usb port
842 * for USB/TA cable. Dock-Smart device need always
843 * exteranl power supply(USB/TA cable through micro-usb
844 * cable). Dock-Smart device support screen output of
845 * target to separate monitor and mouse/keyboard for
848 * Features of 'USB/TA cable with Dock-Smart device'
850 * - Support external output feature of audio
851 * - Support charging through micro-usb port without
852 * data connection if TA cable is connected to target.
853 * - Support charging and data connection through micro-
854 * usb port if USB cable is connected between target
856 * - Support OTG(On-The-Go) device (Ex: Mouse/Keyboard)
858 ret
= max77693_muic_set_path(info
, info
->path_usb
,
863 extcon_set_cable_state_(info
->edev
, EXTCON_DOCK
,
865 extcon_set_cable_state_(info
->edev
, EXTCON_MHL
,
870 /* Check MAX77693_CABLE_GROUP_CHG type */
872 case MAX77693_CHARGER_TYPE_NONE
:
874 * When MHL(with USB/TA cable) or Dock-Audio with USB/TA
875 * cable is attached, muic device happen below two irq.
876 * - 'MAX77693_MUIC_IRQ_INT1_ADC' for detecting
878 * - 'MAX77693_MUIC_IRQ_INT2_CHGTYP' for detecting
879 * USB/TA cable connected to MHL or Dock-Audio.
880 * Always, happen eariler MAX77693_MUIC_IRQ_INT1_ADC
881 * irq than MAX77693_MUIC_IRQ_INT2_CHGTYP irq.
883 * If user attach MHL (with USB/TA cable and immediately
884 * detach MHL with USB/TA cable before MAX77693_MUIC_IRQ
885 * _INT2_CHGTYP irq is happened, USB/TA cable remain
886 * connected state to target. But USB/TA cable isn't
887 * connected to target. The user be face with unusual
888 * action. So, driver should check this situation in
889 * spite of, that previous charger type is N/A.
892 case MAX77693_CHARGER_TYPE_USB
:
893 /* Only USB cable, PATH:AP_USB */
894 ret
= max77693_muic_set_path(info
, info
->path_usb
,
899 extcon_set_cable_state_(info
->edev
, EXTCON_USB
,
902 case MAX77693_CHARGER_TYPE_DEDICATED_CHG
:
904 extcon_set_cable_state_(info
->edev
, EXTCON_TA
, attached
);
908 case MAX77693_CHARGER_TYPE_DOWNSTREAM_PORT
:
909 extcon_set_cable_state_(info
->edev
, EXTCON_CHARGE_DOWNSTREAM
,
912 case MAX77693_CHARGER_TYPE_APPLE_500MA
:
913 extcon_set_cable_state_(info
->edev
, EXTCON_SLOW_CHARGER
,
916 case MAX77693_CHARGER_TYPE_APPLE_1A_2A
:
917 extcon_set_cable_state_(info
->edev
, EXTCON_FAST_CHARGER
,
920 case MAX77693_CHARGER_TYPE_DEAD_BATTERY
:
924 "failed to detect %s accessory (chg_type:0x%x)\n",
925 attached
? "attached" : "detached", chg_type
);
932 static void max77693_muic_irq_work(struct work_struct
*work
)
934 struct max77693_muic_info
*info
= container_of(work
,
935 struct max77693_muic_info
, irq_work
);
942 mutex_lock(&info
->mutex
);
944 for (i
= 0; i
< ARRAY_SIZE(muic_irqs
); i
++)
945 if (info
->irq
== muic_irqs
[i
].virq
)
946 irq_type
= muic_irqs
[i
].irq
;
948 ret
= regmap_bulk_read(info
->max77693
->regmap_muic
,
949 MAX77693_MUIC_REG_STATUS1
, info
->status
, 2);
951 dev_err(info
->dev
, "failed to read MUIC register\n");
952 mutex_unlock(&info
->mutex
);
957 case MAX77693_MUIC_IRQ_INT1_ADC
:
958 case MAX77693_MUIC_IRQ_INT1_ADC_LOW
:
959 case MAX77693_MUIC_IRQ_INT1_ADC_ERR
:
960 case MAX77693_MUIC_IRQ_INT1_ADC1K
:
961 /* Handle all of accessory except for
962 type of charger accessory */
963 ret
= max77693_muic_adc_handler(info
);
965 case MAX77693_MUIC_IRQ_INT2_CHGTYP
:
966 case MAX77693_MUIC_IRQ_INT2_CHGDETREUN
:
967 case MAX77693_MUIC_IRQ_INT2_DCDTMR
:
968 case MAX77693_MUIC_IRQ_INT2_DXOVP
:
969 case MAX77693_MUIC_IRQ_INT2_VBVOLT
:
970 case MAX77693_MUIC_IRQ_INT2_VIDRM
:
971 /* Handle charger accessory */
972 ret
= max77693_muic_chg_handler(info
);
974 case MAX77693_MUIC_IRQ_INT3_EOC
:
975 case MAX77693_MUIC_IRQ_INT3_CGMBC
:
976 case MAX77693_MUIC_IRQ_INT3_OVP
:
977 case MAX77693_MUIC_IRQ_INT3_MBCCHG_ERR
:
978 case MAX77693_MUIC_IRQ_INT3_CHG_ENABLED
:
979 case MAX77693_MUIC_IRQ_INT3_BAT_DET
:
982 dev_err(info
->dev
, "muic interrupt: irq %d occurred\n",
984 mutex_unlock(&info
->mutex
);
989 dev_err(info
->dev
, "failed to handle MUIC interrupt\n");
991 mutex_unlock(&info
->mutex
);
994 static irqreturn_t
max77693_muic_irq_handler(int irq
, void *data
)
996 struct max77693_muic_info
*info
= data
;
999 schedule_work(&info
->irq_work
);
1004 static const struct regmap_config max77693_muic_regmap_config
= {
1009 static int max77693_muic_detect_accessory(struct max77693_muic_info
*info
)
1016 mutex_lock(&info
->mutex
);
1018 /* Read STATUSx register to detect accessory */
1019 ret
= regmap_bulk_read(info
->max77693
->regmap_muic
,
1020 MAX77693_MUIC_REG_STATUS1
, info
->status
, 2);
1022 dev_err(info
->dev
, "failed to read MUIC register\n");
1023 mutex_unlock(&info
->mutex
);
1027 adc
= max77693_muic_get_cable_type(info
, MAX77693_CABLE_GROUP_ADC
,
1029 if (attached
&& adc
!= MAX77693_MUIC_ADC_OPEN
) {
1030 ret
= max77693_muic_adc_handler(info
);
1032 dev_err(info
->dev
, "Cannot detect accessory\n");
1033 mutex_unlock(&info
->mutex
);
1038 chg_type
= max77693_muic_get_cable_type(info
, MAX77693_CABLE_GROUP_CHG
,
1040 if (attached
&& chg_type
!= MAX77693_CHARGER_TYPE_NONE
) {
1041 ret
= max77693_muic_chg_handler(info
);
1043 dev_err(info
->dev
, "Cannot detect charger accessory\n");
1044 mutex_unlock(&info
->mutex
);
1049 mutex_unlock(&info
->mutex
);
1054 static void max77693_muic_detect_cable_wq(struct work_struct
*work
)
1056 struct max77693_muic_info
*info
= container_of(to_delayed_work(work
),
1057 struct max77693_muic_info
, wq_detcable
);
1059 max77693_muic_detect_accessory(info
);
1062 static int max77693_muic_probe(struct platform_device
*pdev
)
1064 struct max77693_dev
*max77693
= dev_get_drvdata(pdev
->dev
.parent
);
1065 struct max77693_platform_data
*pdata
= dev_get_platdata(max77693
->dev
);
1066 struct max77693_muic_info
*info
;
1067 struct max77693_reg_data
*init_data
;
1074 info
= devm_kzalloc(&pdev
->dev
, sizeof(struct max77693_muic_info
),
1079 info
->dev
= &pdev
->dev
;
1080 info
->max77693
= max77693
;
1081 if (info
->max77693
->regmap_muic
) {
1082 dev_dbg(&pdev
->dev
, "allocate register map\n");
1084 info
->max77693
->regmap_muic
= devm_regmap_init_i2c(
1085 info
->max77693
->i2c_muic
,
1086 &max77693_muic_regmap_config
);
1087 if (IS_ERR(info
->max77693
->regmap_muic
)) {
1088 ret
= PTR_ERR(info
->max77693
->regmap_muic
);
1089 dev_err(max77693
->dev
,
1090 "failed to allocate register map: %d\n", ret
);
1095 /* Register input device for button of dock device */
1096 info
->dock
= devm_input_allocate_device(&pdev
->dev
);
1098 dev_err(&pdev
->dev
, "%s: failed to allocate input\n", __func__
);
1101 info
->dock
->name
= "max77693-muic/dock";
1102 info
->dock
->phys
= "max77693-muic/extcon";
1103 info
->dock
->dev
.parent
= &pdev
->dev
;
1105 __set_bit(EV_REP
, info
->dock
->evbit
);
1107 input_set_capability(info
->dock
, EV_KEY
, KEY_VOLUMEUP
);
1108 input_set_capability(info
->dock
, EV_KEY
, KEY_VOLUMEDOWN
);
1109 input_set_capability(info
->dock
, EV_KEY
, KEY_PLAYPAUSE
);
1110 input_set_capability(info
->dock
, EV_KEY
, KEY_PREVIOUSSONG
);
1111 input_set_capability(info
->dock
, EV_KEY
, KEY_NEXTSONG
);
1113 ret
= input_register_device(info
->dock
);
1115 dev_err(&pdev
->dev
, "Cannot register input device error(%d)\n",
1120 platform_set_drvdata(pdev
, info
);
1121 mutex_init(&info
->mutex
);
1123 INIT_WORK(&info
->irq_work
, max77693_muic_irq_work
);
1125 /* Support irq domain for MAX77693 MUIC device */
1126 for (i
= 0; i
< ARRAY_SIZE(muic_irqs
); i
++) {
1127 struct max77693_muic_irq
*muic_irq
= &muic_irqs
[i
];
1128 unsigned int virq
= 0;
1130 virq
= regmap_irq_get_virq(max77693
->irq_data_muic
,
1134 muic_irq
->virq
= virq
;
1136 ret
= devm_request_threaded_irq(&pdev
->dev
, virq
, NULL
,
1137 max77693_muic_irq_handler
,
1139 muic_irq
->name
, info
);
1142 "failed: irq request (IRQ: %d, error :%d)\n",
1143 muic_irq
->irq
, ret
);
1148 /* Initialize extcon device */
1149 info
->edev
= devm_extcon_dev_allocate(&pdev
->dev
,
1150 max77693_extcon_cable
);
1151 if (IS_ERR(info
->edev
)) {
1152 dev_err(&pdev
->dev
, "failed to allocate memory for extcon\n");
1156 ret
= devm_extcon_dev_register(&pdev
->dev
, info
->edev
);
1158 dev_err(&pdev
->dev
, "failed to register extcon device\n");
1162 /* Initialize MUIC register by using platform data or default data */
1163 if (pdata
&& pdata
->muic_data
) {
1164 init_data
= pdata
->muic_data
->init_data
;
1165 num_init_data
= pdata
->muic_data
->num_init_data
;
1167 init_data
= default_init_data
;
1168 num_init_data
= ARRAY_SIZE(default_init_data
);
1171 for (i
= 0; i
< num_init_data
; i
++) {
1172 regmap_write(info
->max77693
->regmap_muic
,
1177 if (pdata
&& pdata
->muic_data
) {
1178 struct max77693_muic_platform_data
*muic_pdata
1182 * Default usb/uart path whether UART/USB or AUX_UART/AUX_USB
1183 * h/w path of COMP2/COMN1 on CONTROL1 register.
1185 if (muic_pdata
->path_uart
)
1186 info
->path_uart
= muic_pdata
->path_uart
;
1188 info
->path_uart
= MAX77693_CONTROL1_SW_UART
;
1190 if (muic_pdata
->path_usb
)
1191 info
->path_usb
= muic_pdata
->path_usb
;
1193 info
->path_usb
= MAX77693_CONTROL1_SW_USB
;
1196 * Default delay time for detecting cable state
1197 * after certain time.
1199 if (muic_pdata
->detcable_delay_ms
)
1201 msecs_to_jiffies(muic_pdata
->detcable_delay_ms
);
1203 delay_jiffies
= msecs_to_jiffies(DELAY_MS_DEFAULT
);
1205 info
->path_usb
= MAX77693_CONTROL1_SW_USB
;
1206 info
->path_uart
= MAX77693_CONTROL1_SW_UART
;
1207 delay_jiffies
= msecs_to_jiffies(DELAY_MS_DEFAULT
);
1210 /* Set initial path for UART */
1211 max77693_muic_set_path(info
, info
->path_uart
, true);
1213 /* Check revision number of MUIC device*/
1214 ret
= regmap_read(info
->max77693
->regmap_muic
,
1215 MAX77693_MUIC_REG_ID
, &id
);
1217 dev_err(&pdev
->dev
, "failed to read revision number\n");
1220 dev_info(info
->dev
, "device ID : 0x%x\n", id
);
1222 /* Set ADC debounce time */
1223 max77693_muic_set_debounce_time(info
, ADC_DEBOUNCE_TIME_25MS
);
1226 * Detect accessory after completing the initialization of platform
1228 * - Use delayed workqueue to detect cable state and then
1229 * notify cable state to notifiee/platform through uevent.
1230 * After completing the booting of platform, the extcon provider
1231 * driver should notify cable state to upper layer.
1233 INIT_DELAYED_WORK(&info
->wq_detcable
, max77693_muic_detect_cable_wq
);
1234 queue_delayed_work(system_power_efficient_wq
, &info
->wq_detcable
,
1240 static int max77693_muic_remove(struct platform_device
*pdev
)
1242 struct max77693_muic_info
*info
= platform_get_drvdata(pdev
);
1244 cancel_work_sync(&info
->irq_work
);
1245 input_unregister_device(info
->dock
);
1250 static struct platform_driver max77693_muic_driver
= {
1254 .probe
= max77693_muic_probe
,
1255 .remove
= max77693_muic_remove
,
1258 module_platform_driver(max77693_muic_driver
);
1260 MODULE_DESCRIPTION("Maxim MAX77693 Extcon driver");
1261 MODULE_AUTHOR("Chanwoo Choi <cw00.choi@samsung.com>");
1262 MODULE_LICENSE("GPL");
1263 MODULE_ALIAS("platform:extcon-max77693");