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-private.h>
28 #include <linux/extcon.h>
29 #include <linux/regmap.h>
30 #include <linux/irqdomain.h>
32 #define DEV_NAME "max77693-muic"
34 enum max77693_muic_adc_debounce_time
{
35 ADC_DEBOUNCE_TIME_5MS
= 0,
36 ADC_DEBOUNCE_TIME_10MS
,
37 ADC_DEBOUNCE_TIME_25MS
,
38 ADC_DEBOUNCE_TIME_38_62MS
,
41 struct max77693_muic_info
{
43 struct max77693_dev
*max77693
;
44 struct extcon_dev
*edev
;
46 int prev_cable_type_gnd
;
52 struct work_struct irq_work
;
55 /* Button of dock device */
56 struct input_dev
*dock
;
59 enum max77693_muic_cable_group
{
60 MAX77693_CABLE_GROUP_ADC
= 0,
61 MAX77693_CABLE_GROUP_ADC_GND
,
62 MAX77693_CABLE_GROUP_CHG
,
63 MAX77693_CABLE_GROUP_VBVOLT
,
66 enum max77693_muic_charger_type
{
67 MAX77693_CHARGER_TYPE_NONE
= 0,
68 MAX77693_CHARGER_TYPE_USB
,
69 MAX77693_CHARGER_TYPE_DOWNSTREAM_PORT
,
70 MAX77693_CHARGER_TYPE_DEDICATED_CHG
,
71 MAX77693_CHARGER_TYPE_APPLE_500MA
,
72 MAX77693_CHARGER_TYPE_APPLE_1A_2A
,
73 MAX77693_CHARGER_TYPE_DEAD_BATTERY
= 7,
77 * struct max77693_muic_irq
78 * @irq: the index of irq list of MUIC device.
79 * @name: the name of irq.
80 * @virq: the virtual irq to use irq domain
82 struct max77693_muic_irq
{
88 static struct max77693_muic_irq muic_irqs
[] = {
89 { MAX77693_MUIC_IRQ_INT1_ADC
, "muic-ADC" },
90 { MAX77693_MUIC_IRQ_INT1_ADC_LOW
, "muic-ADCLOW" },
91 { MAX77693_MUIC_IRQ_INT1_ADC_ERR
, "muic-ADCError" },
92 { MAX77693_MUIC_IRQ_INT1_ADC1K
, "muic-ADC1K" },
93 { MAX77693_MUIC_IRQ_INT2_CHGTYP
, "muic-CHGTYP" },
94 { MAX77693_MUIC_IRQ_INT2_CHGDETREUN
, "muic-CHGDETREUN" },
95 { MAX77693_MUIC_IRQ_INT2_DCDTMR
, "muic-DCDTMR" },
96 { MAX77693_MUIC_IRQ_INT2_DXOVP
, "muic-DXOVP" },
97 { MAX77693_MUIC_IRQ_INT2_VBVOLT
, "muic-VBVOLT" },
98 { MAX77693_MUIC_IRQ_INT2_VIDRM
, "muic-VIDRM" },
99 { MAX77693_MUIC_IRQ_INT3_EOC
, "muic-EOC" },
100 { MAX77693_MUIC_IRQ_INT3_CGMBC
, "muic-CGMBC" },
101 { MAX77693_MUIC_IRQ_INT3_OVP
, "muic-OVP" },
102 { MAX77693_MUIC_IRQ_INT3_MBCCHG_ERR
, "muic-MBCCHG_ERR" },
103 { MAX77693_MUIC_IRQ_INT3_CHG_ENABLED
, "muic-CHG_ENABLED" },
104 { MAX77693_MUIC_IRQ_INT3_BAT_DET
, "muic-BAT_DET" },
107 /* Define supported accessory type */
108 enum max77693_muic_acc_type
{
109 MAX77693_MUIC_ADC_GROUND
= 0x0,
110 MAX77693_MUIC_ADC_SEND_END_BUTTON
,
111 MAX77693_MUIC_ADC_REMOTE_S1_BUTTON
,
112 MAX77693_MUIC_ADC_REMOTE_S2_BUTTON
,
113 MAX77693_MUIC_ADC_REMOTE_S3_BUTTON
,
114 MAX77693_MUIC_ADC_REMOTE_S4_BUTTON
,
115 MAX77693_MUIC_ADC_REMOTE_S5_BUTTON
,
116 MAX77693_MUIC_ADC_REMOTE_S6_BUTTON
,
117 MAX77693_MUIC_ADC_REMOTE_S7_BUTTON
,
118 MAX77693_MUIC_ADC_REMOTE_S8_BUTTON
,
119 MAX77693_MUIC_ADC_REMOTE_S9_BUTTON
,
120 MAX77693_MUIC_ADC_REMOTE_S10_BUTTON
,
121 MAX77693_MUIC_ADC_REMOTE_S11_BUTTON
,
122 MAX77693_MUIC_ADC_REMOTE_S12_BUTTON
,
123 MAX77693_MUIC_ADC_RESERVED_ACC_1
,
124 MAX77693_MUIC_ADC_RESERVED_ACC_2
,
125 MAX77693_MUIC_ADC_RESERVED_ACC_3
,
126 MAX77693_MUIC_ADC_RESERVED_ACC_4
,
127 MAX77693_MUIC_ADC_RESERVED_ACC_5
,
128 MAX77693_MUIC_ADC_CEA936_AUDIO
,
129 MAX77693_MUIC_ADC_PHONE_POWERED_DEV
,
130 MAX77693_MUIC_ADC_TTY_CONVERTER
,
131 MAX77693_MUIC_ADC_UART_CABLE
,
132 MAX77693_MUIC_ADC_CEA936A_TYPE1_CHG
,
133 MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF
,
134 MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON
,
135 MAX77693_MUIC_ADC_AV_CABLE_NOLOAD
,
136 MAX77693_MUIC_ADC_CEA936A_TYPE2_CHG
,
137 MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF
,
138 MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON
,
139 MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE
,
140 MAX77693_MUIC_ADC_OPEN
,
142 /* The below accessories have same ADC value so ADCLow and
143 ADC1K bit is used to separate specific accessory */
144 MAX77693_MUIC_GND_USB_OTG
= 0x100, /* ADC:0x0, VBVolot:0, ADCLow:0, ADC1K:0 */
145 MAX77693_MUIC_GND_USB_OTG_VB
= 0x104, /* ADC:0x0, VBVolot:1, ADCLow:0, ADC1K:0 */
146 MAX77693_MUIC_GND_AV_CABLE_LOAD
= 0x102,/* ADC:0x0, VBVolot:0, ADCLow:1, ADC1K:0 */
147 MAX77693_MUIC_GND_MHL
= 0x103, /* ADC:0x0, VBVolot:0, ADCLow:1, ADC1K:1 */
148 MAX77693_MUIC_GND_MHL_VB
= 0x107, /* ADC:0x0, VBVolot:1, ADCLow:1, ADC1K:1 */
151 /* MAX77693 MUIC device support below list of accessories(external connector) */
153 EXTCON_CABLE_USB
= 0,
154 EXTCON_CABLE_USB_HOST
,
156 EXTCON_CABLE_FAST_CHARGER
,
157 EXTCON_CABLE_SLOW_CHARGER
,
158 EXTCON_CABLE_CHARGE_DOWNSTREAM
,
161 EXTCON_CABLE_JIG_USB_ON
,
162 EXTCON_CABLE_JIG_USB_OFF
,
163 EXTCON_CABLE_JIG_UART_OFF
,
164 EXTCON_CABLE_JIG_UART_ON
,
165 EXTCON_CABLE_DOCK_SMART
,
166 EXTCON_CABLE_DOCK_DESK
,
167 EXTCON_CABLE_DOCK_AUDIO
,
172 const char *max77693_extcon_cable
[] = {
173 [EXTCON_CABLE_USB
] = "USB",
174 [EXTCON_CABLE_USB_HOST
] = "USB-Host",
175 [EXTCON_CABLE_TA
] = "TA",
176 [EXTCON_CABLE_FAST_CHARGER
] = "Fast-charger",
177 [EXTCON_CABLE_SLOW_CHARGER
] = "Slow-charger",
178 [EXTCON_CABLE_CHARGE_DOWNSTREAM
] = "Charge-downstream",
179 [EXTCON_CABLE_MHL
] = "MHL",
180 [EXTCON_CABLE_MHL_TA
] = "MHL_TA",
181 [EXTCON_CABLE_JIG_USB_ON
] = "JIG-USB-ON",
182 [EXTCON_CABLE_JIG_USB_OFF
] = "JIG-USB-OFF",
183 [EXTCON_CABLE_JIG_UART_OFF
] = "JIG-UART-OFF",
184 [EXTCON_CABLE_JIG_UART_ON
] = "Dock-Car",
185 [EXTCON_CABLE_DOCK_SMART
] = "Dock-Smart",
186 [EXTCON_CABLE_DOCK_DESK
] = "Dock-Desk",
187 [EXTCON_CABLE_DOCK_AUDIO
] = "Dock-Audio",
193 * max77693_muic_set_debounce_time - Set the debounce time of ADC
194 * @info: the instance including private data of max77693 MUIC
195 * @time: the debounce time of ADC
197 static int max77693_muic_set_debounce_time(struct max77693_muic_info
*info
,
198 enum max77693_muic_adc_debounce_time time
)
203 case ADC_DEBOUNCE_TIME_5MS
:
204 case ADC_DEBOUNCE_TIME_10MS
:
205 case ADC_DEBOUNCE_TIME_25MS
:
206 case ADC_DEBOUNCE_TIME_38_62MS
:
207 ret
= max77693_update_reg(info
->max77693
->regmap_muic
,
208 MAX77693_MUIC_REG_CTRL3
,
209 time
<< CONTROL3_ADCDBSET_SHIFT
,
210 CONTROL3_ADCDBSET_MASK
);
212 dev_err(info
->dev
, "failed to set ADC debounce time\n");
215 dev_err(info
->dev
, "invalid ADC debounce time\n");
224 * max77693_muic_set_path - Set hardware line according to attached cable
225 * @info: the instance including private data of max77693 MUIC
226 * @value: the path according to attached cable
227 * @attached: the state of cable (true:attached, false:detached)
229 * The max77693 MUIC device share outside H/W line among a varity of cables
230 * so, this function set internal path of H/W line according to the type of
233 static int max77693_muic_set_path(struct max77693_muic_info
*info
,
234 u8 val
, bool attached
)
242 ctrl1
= CONTROL1_SW_OPEN
;
244 ret
= max77693_update_reg(info
->max77693
->regmap_muic
,
245 MAX77693_MUIC_REG_CTRL1
, ctrl1
, COMP_SW_MASK
);
247 dev_err(info
->dev
, "failed to update MUIC register\n");
252 ctrl2
|= CONTROL2_CPEN_MASK
; /* LowPwr=0, CPEn=1 */
254 ctrl2
|= CONTROL2_LOWPWR_MASK
; /* LowPwr=1, CPEn=0 */
256 ret
= max77693_update_reg(info
->max77693
->regmap_muic
,
257 MAX77693_MUIC_REG_CTRL2
, ctrl2
,
258 CONTROL2_LOWPWR_MASK
| CONTROL2_CPEN_MASK
);
260 dev_err(info
->dev
, "failed to update MUIC register\n");
265 "CONTROL1 : 0x%02x, CONTROL2 : 0x%02x, state : %s\n",
266 ctrl1
, ctrl2
, attached
? "attached" : "detached");
272 * max77693_muic_get_cable_type - Return cable type and check cable state
273 * @info: the instance including private data of max77693 MUIC
274 * @group: the path according to attached cable
275 * @attached: store cable state and return
277 * This function check the cable state either attached or detached,
278 * and then divide precise type of cable according to cable group.
279 * - MAX77693_CABLE_GROUP_ADC
280 * - MAX77693_CABLE_GROUP_ADC_GND
281 * - MAX77693_CABLE_GROUP_CHG
282 * - MAX77693_CABLE_GROUP_VBVOLT
284 static int max77693_muic_get_cable_type(struct max77693_muic_info
*info
,
285 enum max77693_muic_cable_group group
, bool *attached
)
295 case MAX77693_CABLE_GROUP_ADC
:
297 * Read ADC value to check cable type and decide cable state
298 * according to cable type
300 adc
= info
->status
[0] & STATUS1_ADC_MASK
;
301 adc
>>= STATUS1_ADC_SHIFT
;
304 * Check current cable state/cable type and store cable type
305 * (info->prev_cable_type) for handling cable when cable is
308 if (adc
== MAX77693_MUIC_ADC_OPEN
) {
311 cable_type
= info
->prev_cable_type
;
312 info
->prev_cable_type
= MAX77693_MUIC_ADC_OPEN
;
316 cable_type
= info
->prev_cable_type
= adc
;
319 case MAX77693_CABLE_GROUP_ADC_GND
:
321 * Read ADC value to check cable type and decide cable state
322 * according to cable type
324 adc
= info
->status
[0] & STATUS1_ADC_MASK
;
325 adc
>>= STATUS1_ADC_SHIFT
;
328 * Check current cable state/cable type and store cable type
329 * (info->prev_cable_type/_gnd) for handling cable when cable
332 if (adc
== MAX77693_MUIC_ADC_OPEN
) {
335 cable_type
= info
->prev_cable_type_gnd
;
336 info
->prev_cable_type_gnd
= MAX77693_MUIC_ADC_OPEN
;
340 adclow
= info
->status
[0] & STATUS1_ADCLOW_MASK
;
341 adclow
>>= STATUS1_ADCLOW_SHIFT
;
342 adc1k
= info
->status
[0] & STATUS1_ADC1K_MASK
;
343 adc1k
>>= STATUS1_ADC1K_SHIFT
;
345 vbvolt
= info
->status
[1] & STATUS2_VBVOLT_MASK
;
346 vbvolt
>>= STATUS2_VBVOLT_SHIFT
;
349 * [0x1][VBVolt][ADCLow][ADC1K]
350 * [0x1 0 0 0 ] : USB_OTG
351 * [0x1 1 0 0 ] : USB_OTG_VB
352 * [0x1 0 1 0 ] : Audio Video Cable with load
353 * [0x1 0 1 1 ] : MHL without charging connector
354 * [0x1 1 1 1 ] : MHL with charging connector
356 cable_type
= ((0x1 << 8)
361 info
->prev_cable_type
= adc
;
362 info
->prev_cable_type_gnd
= cable_type
;
366 case MAX77693_CABLE_GROUP_CHG
:
368 * Read charger type to check cable type and decide cable state
369 * according to type of charger cable.
371 chg_type
= info
->status
[1] & STATUS2_CHGTYP_MASK
;
372 chg_type
>>= STATUS2_CHGTYP_SHIFT
;
374 if (chg_type
== MAX77693_CHARGER_TYPE_NONE
) {
377 cable_type
= info
->prev_chg_type
;
378 info
->prev_chg_type
= MAX77693_CHARGER_TYPE_NONE
;
383 * Check current cable state/cable type and store cable
384 * type(info->prev_chg_type) for handling cable when
385 * charger cable is detached.
387 cable_type
= info
->prev_chg_type
= chg_type
;
391 case MAX77693_CABLE_GROUP_VBVOLT
:
393 * Read ADC value to check cable type and decide cable state
394 * according to cable type
396 adc
= info
->status
[0] & STATUS1_ADC_MASK
;
397 adc
>>= STATUS1_ADC_SHIFT
;
398 chg_type
= info
->status
[1] & STATUS2_CHGTYP_MASK
;
399 chg_type
>>= STATUS2_CHGTYP_SHIFT
;
401 if (adc
== MAX77693_MUIC_ADC_OPEN
402 && chg_type
== MAX77693_CHARGER_TYPE_NONE
)
408 * Read vbvolt field, if vbvolt is 1,
409 * this cable is used for charging.
411 vbvolt
= info
->status
[1] & STATUS2_VBVOLT_MASK
;
412 vbvolt
>>= STATUS2_VBVOLT_SHIFT
;
417 dev_err(info
->dev
, "Unknown cable group (%d)\n", group
);
418 cable_type
= -EINVAL
;
425 static int max77693_muic_dock_handler(struct max77693_muic_info
*info
,
426 int cable_type
, bool attached
)
429 char dock_name
[CABLE_NAME_MAX
];
432 "external connector is %s (adc:0x%02x)\n",
433 attached
? "attached" : "detached", cable_type
);
435 switch (cable_type
) {
436 case MAX77693_MUIC_ADC_RESERVED_ACC_3
: /* Dock-Smart */
438 ret
= max77693_muic_set_path(info
,
439 CONTROL1_SW_USB
, attached
);
444 extcon_set_cable_state(info
->edev
, "Dock-Smart", attached
);
446 case MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON
: /* Dock-Car */
447 strcpy(dock_name
, "Dock-Car");
449 case MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE
: /* Dock-Desk */
450 strcpy(dock_name
, "Dock-Desk");
452 case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD
: /* Dock-Audio */
453 strcpy(dock_name
, "Dock-Audio");
455 extcon_set_cable_state(info
->edev
, "USB", false);
459 /* Dock-Car/Desk/Audio, PATH:AUDIO */
460 ret
= max77693_muic_set_path(info
, CONTROL1_SW_AUDIO
, attached
);
463 extcon_set_cable_state(info
->edev
, dock_name
, attached
);
469 static int max77693_muic_dock_button_handler(struct max77693_muic_info
*info
,
470 int button_type
, bool attached
)
472 struct input_dev
*dock
= info
->dock
;
476 switch (button_type
) {
477 case MAX77693_MUIC_ADC_REMOTE_S3_BUTTON
-1
478 ... MAX77693_MUIC_ADC_REMOTE_S3_BUTTON
+1:
480 code
= KEY_PREVIOUSSONG
;
482 case MAX77693_MUIC_ADC_REMOTE_S7_BUTTON
-1
483 ... MAX77693_MUIC_ADC_REMOTE_S7_BUTTON
+1:
487 case MAX77693_MUIC_ADC_REMOTE_S9_BUTTON
:
489 code
= KEY_VOLUMEDOWN
;
491 case MAX77693_MUIC_ADC_REMOTE_S10_BUTTON
:
495 case MAX77693_MUIC_ADC_REMOTE_S12_BUTTON
-1
496 ... MAX77693_MUIC_ADC_REMOTE_S12_BUTTON
+1:
497 /* DOCK_KEY_PLAY_PAUSE */
498 code
= KEY_PLAYPAUSE
;
502 "failed to detect %s key (adc:0x%x)\n",
503 attached
? "pressed" : "released", button_type
);
508 input_event(dock
, EV_KEY
, code
, attached
);
515 static int max77693_muic_adc_ground_handler(struct max77693_muic_info
*info
)
521 cable_type_gnd
= max77693_muic_get_cable_type(info
,
522 MAX77693_CABLE_GROUP_ADC_GND
, &attached
);
524 switch (cable_type_gnd
) {
525 case MAX77693_MUIC_GND_USB_OTG
:
526 case MAX77693_MUIC_GND_USB_OTG_VB
:
527 /* USB_OTG, PATH: AP_USB */
528 ret
= max77693_muic_set_path(info
, CONTROL1_SW_USB
, attached
);
531 extcon_set_cable_state(info
->edev
, "USB-Host", attached
);
533 case MAX77693_MUIC_GND_AV_CABLE_LOAD
:
534 /* Audio Video Cable with load, PATH:AUDIO */
535 ret
= max77693_muic_set_path(info
, CONTROL1_SW_AUDIO
, attached
);
538 extcon_set_cable_state(info
->edev
,
539 "Audio-video-load", attached
);
541 case MAX77693_MUIC_GND_MHL
:
542 case MAX77693_MUIC_GND_MHL_VB
:
543 /* MHL or MHL with USB/TA cable */
544 extcon_set_cable_state(info
->edev
, "MHL", attached
);
547 dev_err(info
->dev
, "failed to detect %s accessory\n",
548 attached
? "attached" : "detached");
557 static int max77693_muic_jig_handler(struct max77693_muic_info
*info
,
558 int cable_type
, bool attached
)
562 u8 path
= CONTROL1_SW_OPEN
;
565 "external connector is %s (adc:0x%02x)\n",
566 attached
? "attached" : "detached", cable_type
);
568 switch (cable_type
) {
569 case MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF
: /* ADC_JIG_USB_OFF */
571 strcpy(cable_name
, "JIG-USB-OFF");
572 path
= CONTROL1_SW_USB
;
574 case MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON
: /* ADC_JIG_USB_ON */
576 strcpy(cable_name
, "JIG-USB-ON");
577 path
= CONTROL1_SW_USB
;
579 case MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF
: /* ADC_JIG_UART_OFF */
581 strcpy(cable_name
, "JIG-UART-OFF");
582 path
= CONTROL1_SW_UART
;
586 ret
= max77693_muic_set_path(info
, path
, attached
);
590 extcon_set_cable_state(info
->edev
, cable_name
, attached
);
595 static int max77693_muic_adc_handler(struct max77693_muic_info
*info
)
602 /* Check accessory state which is either detached or attached */
603 cable_type
= max77693_muic_get_cable_type(info
,
604 MAX77693_CABLE_GROUP_ADC
, &attached
);
607 "external connector is %s (adc:0x%02x, prev_adc:0x%x)\n",
608 attached
? "attached" : "detached", cable_type
,
609 info
->prev_cable_type
);
611 switch (cable_type
) {
612 case MAX77693_MUIC_ADC_GROUND
:
613 /* USB_OTG/MHL/Audio */
614 max77693_muic_adc_ground_handler(info
);
616 case MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF
:
617 case MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON
:
618 case MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF
:
620 ret
= max77693_muic_jig_handler(info
, cable_type
, attached
);
624 case MAX77693_MUIC_ADC_RESERVED_ACC_3
: /* Dock-Smart */
625 case MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON
: /* Dock-Car */
626 case MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE
: /* Dock-Desk */
627 case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD
: /* Dock-Audio */
631 * The MAX77693 MUIC device can detect total 34 cable type
632 * except of charger cable and MUIC device didn't define
633 * specfic role of cable in the range of from 0x01 to 0x12
634 * of ADC value. So, can use/define cable with no role according
635 * to schema of hardware board.
637 ret
= max77693_muic_dock_handler(info
, cable_type
, attached
);
641 case MAX77693_MUIC_ADC_REMOTE_S3_BUTTON
: /* DOCK_KEY_PREV */
642 case MAX77693_MUIC_ADC_REMOTE_S7_BUTTON
: /* DOCK_KEY_NEXT */
643 case MAX77693_MUIC_ADC_REMOTE_S9_BUTTON
: /* DOCK_VOL_DOWN */
644 case MAX77693_MUIC_ADC_REMOTE_S10_BUTTON
: /* DOCK_VOL_UP */
645 case MAX77693_MUIC_ADC_REMOTE_S12_BUTTON
: /* DOCK_KEY_PLAY_PAUSE */
647 * Button of DOCK device
648 * - the Prev/Next/Volume Up/Volume Down/Play-Pause button
650 * The MAX77693 MUIC device can detect total 34 cable type
651 * except of charger cable and MUIC device didn't define
652 * specfic role of cable in the range of from 0x01 to 0x12
653 * of ADC value. So, can use/define cable with no role according
654 * to schema of hardware board.
657 button_type
= info
->prev_button_type
= cable_type
;
659 button_type
= info
->prev_button_type
;
661 ret
= max77693_muic_dock_button_handler(info
, button_type
,
666 case MAX77693_MUIC_ADC_SEND_END_BUTTON
:
667 case MAX77693_MUIC_ADC_REMOTE_S1_BUTTON
:
668 case MAX77693_MUIC_ADC_REMOTE_S2_BUTTON
:
669 case MAX77693_MUIC_ADC_REMOTE_S4_BUTTON
:
670 case MAX77693_MUIC_ADC_REMOTE_S5_BUTTON
:
671 case MAX77693_MUIC_ADC_REMOTE_S6_BUTTON
:
672 case MAX77693_MUIC_ADC_REMOTE_S8_BUTTON
:
673 case MAX77693_MUIC_ADC_REMOTE_S11_BUTTON
:
674 case MAX77693_MUIC_ADC_RESERVED_ACC_1
:
675 case MAX77693_MUIC_ADC_RESERVED_ACC_2
:
676 case MAX77693_MUIC_ADC_RESERVED_ACC_4
:
677 case MAX77693_MUIC_ADC_RESERVED_ACC_5
:
678 case MAX77693_MUIC_ADC_CEA936_AUDIO
:
679 case MAX77693_MUIC_ADC_PHONE_POWERED_DEV
:
680 case MAX77693_MUIC_ADC_TTY_CONVERTER
:
681 case MAX77693_MUIC_ADC_UART_CABLE
:
682 case MAX77693_MUIC_ADC_CEA936A_TYPE1_CHG
:
683 case MAX77693_MUIC_ADC_CEA936A_TYPE2_CHG
:
685 * This accessory isn't used in general case if it is specially
686 * needed to detect additional accessory, should implement
687 * proper operation when this accessory is attached/detached.
690 "accessory is %s but it isn't used (adc:0x%x)\n",
691 attached
? "attached" : "detached", cable_type
);
695 "failed to detect %s accessory (adc:0x%x)\n",
696 attached
? "attached" : "detached", cable_type
);
705 static int max77693_muic_chg_handler(struct max77693_muic_info
*info
)
714 chg_type
= max77693_muic_get_cable_type(info
,
715 MAX77693_CABLE_GROUP_CHG
, &attached
);
718 "external connector is %s(chg_type:0x%x, prev_chg_type:0x%x)\n",
719 attached
? "attached" : "detached",
720 chg_type
, info
->prev_chg_type
);
723 case MAX77693_CHARGER_TYPE_USB
:
725 * MHL_TA(USB/TA) with MHL cable
726 * - MHL cable include two port(HDMI line and separate micro
727 * -usb port. When the target connect MHL cable, extcon driver
728 * check whether MHL_TA(USB/TA) cable is connected. If MHL_TA
729 * cable is connected, extcon driver notify state to notifiee
730 * for charging battery.
732 cable_type_gnd
= max77693_muic_get_cable_type(info
,
733 MAX77693_CABLE_GROUP_ADC_GND
,
735 if (cable_type_gnd
== MAX77693_MUIC_GND_MHL
736 || cable_type_gnd
== MAX77693_MUIC_GND_MHL_VB
) {
737 extcon_set_cable_state(info
->edev
, "MHL_TA", attached
);
740 extcon_set_cable_state(info
->edev
,
746 * USB/TA cable with Dock-Audio device
747 * - Dock device include two port(Dock-Audio and micro-usb
748 * port). When the target connect Dock-Audio device, extcon
749 * driver check whether USB/TA cable is connected.
750 * If USB/TA cable is connected, extcon driver notify state
751 * to notifiee for charging battery.
753 cable_type
= max77693_muic_get_cable_type(info
,
754 MAX77693_CABLE_GROUP_ADC
,
756 if (cable_type
== MAX77693_MUIC_ADC_AV_CABLE_NOLOAD
) {
757 extcon_set_cable_state(info
->edev
, "USB", attached
);
760 extcon_set_cable_state(info
->edev
,
761 "Dock-Audio", false);
765 /* Only USB cable, PATH:AP_USB */
766 ret
= max77693_muic_set_path(info
, CONTROL1_SW_USB
, attached
);
769 extcon_set_cable_state(info
->edev
, "USB", attached
);
771 case MAX77693_CHARGER_TYPE_DOWNSTREAM_PORT
:
772 extcon_set_cable_state(info
->edev
,
773 "Charge-downstream", attached
);
775 case MAX77693_CHARGER_TYPE_DEDICATED_CHG
:
776 extcon_set_cable_state(info
->edev
, "TA", attached
);
778 case MAX77693_CHARGER_TYPE_APPLE_500MA
:
779 extcon_set_cable_state(info
->edev
, "Slow-charger", attached
);
781 case MAX77693_CHARGER_TYPE_APPLE_1A_2A
:
782 extcon_set_cable_state(info
->edev
, "Fast-charger", attached
);
784 case MAX77693_CHARGER_TYPE_DEAD_BATTERY
:
788 "failed to detect %s accessory (chg_type:0x%x)\n",
789 attached
? "attached" : "detached", chg_type
);
798 static void max77693_muic_irq_work(struct work_struct
*work
)
800 struct max77693_muic_info
*info
= container_of(work
,
801 struct max77693_muic_info
, irq_work
);
808 mutex_lock(&info
->mutex
);
810 for (i
= 0 ; i
< ARRAY_SIZE(muic_irqs
) ; i
++)
811 if (info
->irq
== muic_irqs
[i
].virq
)
812 irq_type
= muic_irqs
[i
].irq
;
814 ret
= max77693_bulk_read(info
->max77693
->regmap_muic
,
815 MAX77693_MUIC_REG_STATUS1
, 2, info
->status
);
817 dev_err(info
->dev
, "failed to read MUIC register\n");
818 mutex_unlock(&info
->mutex
);
823 case MAX77693_MUIC_IRQ_INT1_ADC
:
824 case MAX77693_MUIC_IRQ_INT1_ADC_LOW
:
825 case MAX77693_MUIC_IRQ_INT1_ADC_ERR
:
826 case MAX77693_MUIC_IRQ_INT1_ADC1K
:
827 /* Handle all of accessory except for
828 type of charger accessory */
829 ret
= max77693_muic_adc_handler(info
);
831 case MAX77693_MUIC_IRQ_INT2_CHGTYP
:
832 case MAX77693_MUIC_IRQ_INT2_CHGDETREUN
:
833 case MAX77693_MUIC_IRQ_INT2_DCDTMR
:
834 case MAX77693_MUIC_IRQ_INT2_DXOVP
:
835 case MAX77693_MUIC_IRQ_INT2_VBVOLT
:
836 case MAX77693_MUIC_IRQ_INT2_VIDRM
:
837 /* Handle charger accessory */
838 ret
= max77693_muic_chg_handler(info
);
840 case MAX77693_MUIC_IRQ_INT3_EOC
:
841 case MAX77693_MUIC_IRQ_INT3_CGMBC
:
842 case MAX77693_MUIC_IRQ_INT3_OVP
:
843 case MAX77693_MUIC_IRQ_INT3_MBCCHG_ERR
:
844 case MAX77693_MUIC_IRQ_INT3_CHG_ENABLED
:
845 case MAX77693_MUIC_IRQ_INT3_BAT_DET
:
848 dev_err(info
->dev
, "muic interrupt: irq %d occurred\n",
854 dev_err(info
->dev
, "failed to handle MUIC interrupt\n");
856 mutex_unlock(&info
->mutex
);
861 static irqreturn_t
max77693_muic_irq_handler(int irq
, void *data
)
863 struct max77693_muic_info
*info
= data
;
866 schedule_work(&info
->irq_work
);
871 static struct regmap_config max77693_muic_regmap_config
= {
876 static int max77693_muic_detect_accessory(struct max77693_muic_info
*info
)
883 mutex_lock(&info
->mutex
);
885 /* Read STATUSx register to detect accessory */
886 ret
= max77693_bulk_read(info
->max77693
->regmap_muic
,
887 MAX77693_MUIC_REG_STATUS1
, 2, info
->status
);
889 dev_err(info
->dev
, "failed to read MUIC register\n");
890 mutex_unlock(&info
->mutex
);
894 adc
= max77693_muic_get_cable_type(info
, MAX77693_CABLE_GROUP_ADC
,
896 if (attached
&& adc
!= MAX77693_MUIC_ADC_OPEN
) {
897 ret
= max77693_muic_adc_handler(info
);
899 dev_err(info
->dev
, "Cannot detect accessory\n");
902 chg_type
= max77693_muic_get_cable_type(info
, MAX77693_CABLE_GROUP_CHG
,
904 if (attached
&& chg_type
!= MAX77693_CHARGER_TYPE_NONE
) {
905 ret
= max77693_muic_chg_handler(info
);
907 dev_err(info
->dev
, "Cannot detect charger accessory\n");
910 mutex_unlock(&info
->mutex
);
915 static int max77693_muic_probe(struct platform_device
*pdev
)
917 struct max77693_dev
*max77693
= dev_get_drvdata(pdev
->dev
.parent
);
918 struct max77693_platform_data
*pdata
= dev_get_platdata(max77693
->dev
);
919 struct max77693_muic_platform_data
*muic_pdata
= pdata
->muic_data
;
920 struct max77693_muic_info
*info
;
924 info
= devm_kzalloc(&pdev
->dev
, sizeof(struct max77693_muic_info
),
927 dev_err(&pdev
->dev
, "failed to allocate memory\n");
930 info
->dev
= &pdev
->dev
;
931 info
->max77693
= max77693
;
932 if (info
->max77693
->regmap_muic
) {
933 dev_dbg(&pdev
->dev
, "allocate register map\n");
935 info
->max77693
->regmap_muic
= devm_regmap_init_i2c(
936 info
->max77693
->muic
,
937 &max77693_muic_regmap_config
);
938 if (IS_ERR(info
->max77693
->regmap_muic
)) {
939 ret
= PTR_ERR(info
->max77693
->regmap_muic
);
940 dev_err(max77693
->dev
,
941 "failed to allocate register map: %d\n", ret
);
946 /* Register input device for button of dock device */
947 info
->dock
= input_allocate_device();
949 dev_err(&pdev
->dev
, "%s: failed to allocate input\n", __func__
);
952 info
->dock
->name
= "max77693-muic/dock";
953 info
->dock
->phys
= "max77693-muic/extcon";
954 info
->dock
->dev
.parent
= &pdev
->dev
;
956 __set_bit(EV_REP
, info
->dock
->evbit
);
958 input_set_capability(info
->dock
, EV_KEY
, KEY_VOLUMEUP
);
959 input_set_capability(info
->dock
, EV_KEY
, KEY_VOLUMEDOWN
);
960 input_set_capability(info
->dock
, EV_KEY
, KEY_PLAYPAUSE
);
961 input_set_capability(info
->dock
, EV_KEY
, KEY_PREVIOUSSONG
);
962 input_set_capability(info
->dock
, EV_KEY
, KEY_NEXTSONG
);
964 ret
= input_register_device(info
->dock
);
966 dev_err(&pdev
->dev
, "Cannot register input device error(%d)\n",
971 platform_set_drvdata(pdev
, info
);
972 mutex_init(&info
->mutex
);
974 INIT_WORK(&info
->irq_work
, max77693_muic_irq_work
);
976 /* Support irq domain for MAX77693 MUIC device */
977 for (i
= 0; i
< ARRAY_SIZE(muic_irqs
); i
++) {
978 struct max77693_muic_irq
*muic_irq
= &muic_irqs
[i
];
979 unsigned int virq
= 0;
981 virq
= irq_create_mapping(max77693
->irq_domain
, muic_irq
->irq
);
986 muic_irq
->virq
= virq
;
988 ret
= request_threaded_irq(virq
, NULL
,
989 max77693_muic_irq_handler
,
990 IRQF_ONESHOT
, muic_irq
->name
, info
);
993 "failed: irq request (IRQ: %d,"
1001 /* Initialize extcon device */
1002 info
->edev
= devm_kzalloc(&pdev
->dev
, sizeof(struct extcon_dev
),
1005 dev_err(&pdev
->dev
, "failed to allocate memory for extcon\n");
1009 info
->edev
->name
= DEV_NAME
;
1010 info
->edev
->supported_cable
= max77693_extcon_cable
;
1011 ret
= extcon_dev_register(info
->edev
, NULL
);
1013 dev_err(&pdev
->dev
, "failed to register extcon device\n");
1017 /* Initialize MUIC register by using platform data */
1018 for (i
= 0 ; i
< muic_pdata
->num_init_data
; i
++) {
1019 enum max77693_irq_source irq_src
= MAX77693_IRQ_GROUP_NR
;
1021 max77693_write_reg(info
->max77693
->regmap_muic
,
1022 muic_pdata
->init_data
[i
].addr
,
1023 muic_pdata
->init_data
[i
].data
);
1025 switch (muic_pdata
->init_data
[i
].addr
) {
1026 case MAX77693_MUIC_REG_INTMASK1
:
1027 irq_src
= MUIC_INT1
;
1029 case MAX77693_MUIC_REG_INTMASK2
:
1030 irq_src
= MUIC_INT2
;
1032 case MAX77693_MUIC_REG_INTMASK3
:
1033 irq_src
= MUIC_INT3
;
1037 if (irq_src
< MAX77693_IRQ_GROUP_NR
)
1038 info
->max77693
->irq_masks_cur
[irq_src
]
1039 = muic_pdata
->init_data
[i
].data
;
1042 /* Check revision number of MUIC device*/
1043 ret
= max77693_read_reg(info
->max77693
->regmap_muic
,
1044 MAX77693_MUIC_REG_ID
, &id
);
1046 dev_err(&pdev
->dev
, "failed to read revision number\n");
1049 dev_info(info
->dev
, "device ID : 0x%x\n", id
);
1051 /* Set ADC debounce time */
1052 max77693_muic_set_debounce_time(info
, ADC_DEBOUNCE_TIME_25MS
);
1054 /* Detect accessory on boot */
1055 max77693_muic_detect_accessory(info
);
1060 extcon_dev_unregister(info
->edev
);
1063 free_irq(muic_irqs
[i
].virq
, info
);
1067 static int max77693_muic_remove(struct platform_device
*pdev
)
1069 struct max77693_muic_info
*info
= platform_get_drvdata(pdev
);
1072 for (i
= 0; i
< ARRAY_SIZE(muic_irqs
); i
++)
1073 free_irq(muic_irqs
[i
].virq
, info
);
1074 cancel_work_sync(&info
->irq_work
);
1075 input_unregister_device(info
->dock
);
1076 extcon_dev_unregister(info
->edev
);
1081 static struct platform_driver max77693_muic_driver
= {
1084 .owner
= THIS_MODULE
,
1086 .probe
= max77693_muic_probe
,
1087 .remove
= max77693_muic_remove
,
1090 module_platform_driver(max77693_muic_driver
);
1092 MODULE_DESCRIPTION("Maxim MAX77693 Extcon driver");
1093 MODULE_AUTHOR("Chanwoo Choi <cw00.choi@samsung.com>");
1094 MODULE_LICENSE("GPL");
1095 MODULE_ALIAS("platform:extcon-max77693");