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path: root/drivers/extcon/extcon-max77693.c
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-rw-r--r--drivers/extcon/extcon-max77693.c981
1 files changed, 717 insertions, 264 deletions
diff --git a/drivers/extcon/extcon-max77693.c b/drivers/extcon/extcon-max77693.c
index 8c17b65eb74d..b70e3815c459 100644
--- a/drivers/extcon/extcon-max77693.c
+++ b/drivers/extcon/extcon-max77693.c
@@ -19,6 +19,7 @@
19#include <linux/module.h> 19#include <linux/module.h>
20#include <linux/i2c.h> 20#include <linux/i2c.h>
21#include <linux/slab.h> 21#include <linux/slab.h>
22#include <linux/input.h>
22#include <linux/interrupt.h> 23#include <linux/interrupt.h>
23#include <linux/err.h> 24#include <linux/err.h>
24#include <linux/platform_device.h> 25#include <linux/platform_device.h>
@@ -29,92 +30,7 @@
29#include <linux/irqdomain.h> 30#include <linux/irqdomain.h>
30 31
31#define DEV_NAME "max77693-muic" 32#define DEV_NAME "max77693-muic"
32 33#define DELAY_MS_DEFAULT 20000 /* unit: millisecond */
33/* MAX77693 MUIC - STATUS1~3 Register */
34#define STATUS1_ADC_SHIFT (0)
35#define STATUS1_ADCLOW_SHIFT (5)
36#define STATUS1_ADCERR_SHIFT (6)
37#define STATUS1_ADC1K_SHIFT (7)
38#define STATUS1_ADC_MASK (0x1f << STATUS1_ADC_SHIFT)
39#define STATUS1_ADCLOW_MASK (0x1 << STATUS1_ADCLOW_SHIFT)
40#define STATUS1_ADCERR_MASK (0x1 << STATUS1_ADCERR_SHIFT)
41#define STATUS1_ADC1K_MASK (0x1 << STATUS1_ADC1K_SHIFT)
42
43#define STATUS2_CHGTYP_SHIFT (0)
44#define STATUS2_CHGDETRUN_SHIFT (3)
45#define STATUS2_DCDTMR_SHIFT (4)
46#define STATUS2_DXOVP_SHIFT (5)
47#define STATUS2_VBVOLT_SHIFT (6)
48#define STATUS2_VIDRM_SHIFT (7)
49#define STATUS2_CHGTYP_MASK (0x7 << STATUS2_CHGTYP_SHIFT)
50#define STATUS2_CHGDETRUN_MASK (0x1 << STATUS2_CHGDETRUN_SHIFT)
51#define STATUS2_DCDTMR_MASK (0x1 << STATUS2_DCDTMR_SHIFT)
52#define STATUS2_DXOVP_MASK (0x1 << STATUS2_DXOVP_SHIFT)
53#define STATUS2_VBVOLT_MASK (0x1 << STATUS2_VBVOLT_SHIFT)
54#define STATUS2_VIDRM_MASK (0x1 << STATUS2_VIDRM_SHIFT)
55
56#define STATUS3_OVP_SHIFT (2)
57#define STATUS3_OVP_MASK (0x1 << STATUS3_OVP_SHIFT)
58
59/* MAX77693 CDETCTRL1~2 register */
60#define CDETCTRL1_CHGDETEN_SHIFT (0)
61#define CDETCTRL1_CHGTYPMAN_SHIFT (1)
62#define CDETCTRL1_DCDEN_SHIFT (2)
63#define CDETCTRL1_DCD2SCT_SHIFT (3)
64#define CDETCTRL1_CDDELAY_SHIFT (4)
65#define CDETCTRL1_DCDCPL_SHIFT (5)
66#define CDETCTRL1_CDPDET_SHIFT (7)
67#define CDETCTRL1_CHGDETEN_MASK (0x1 << CDETCTRL1_CHGDETEN_SHIFT)
68#define CDETCTRL1_CHGTYPMAN_MASK (0x1 << CDETCTRL1_CHGTYPMAN_SHIFT)
69#define CDETCTRL1_DCDEN_MASK (0x1 << CDETCTRL1_DCDEN_SHIFT)
70#define CDETCTRL1_DCD2SCT_MASK (0x1 << CDETCTRL1_DCD2SCT_SHIFT)
71#define CDETCTRL1_CDDELAY_MASK (0x1 << CDETCTRL1_CDDELAY_SHIFT)
72#define CDETCTRL1_DCDCPL_MASK (0x1 << CDETCTRL1_DCDCPL_SHIFT)
73#define CDETCTRL1_CDPDET_MASK (0x1 << CDETCTRL1_CDPDET_SHIFT)
74
75#define CDETCTRL2_VIDRMEN_SHIFT (1)
76#define CDETCTRL2_DXOVPEN_SHIFT (3)
77#define CDETCTRL2_VIDRMEN_MASK (0x1 << CDETCTRL2_VIDRMEN_SHIFT)
78#define CDETCTRL2_DXOVPEN_MASK (0x1 << CDETCTRL2_DXOVPEN_SHIFT)
79
80/* MAX77693 MUIC - CONTROL1~3 register */
81#define COMN1SW_SHIFT (0)
82#define COMP2SW_SHIFT (3)
83#define COMN1SW_MASK (0x7 << COMN1SW_SHIFT)
84#define COMP2SW_MASK (0x7 << COMP2SW_SHIFT)
85#define COMP_SW_MASK (COMP2SW_MASK | COMN1SW_MASK)
86#define CONTROL1_SW_USB ((1 << COMP2SW_SHIFT) \
87 | (1 << COMN1SW_SHIFT))
88#define CONTROL1_SW_AUDIO ((2 << COMP2SW_SHIFT) \
89 | (2 << COMN1SW_SHIFT))
90#define CONTROL1_SW_UART ((3 << COMP2SW_SHIFT) \
91 | (3 << COMN1SW_SHIFT))
92#define CONTROL1_SW_OPEN ((0 << COMP2SW_SHIFT) \
93 | (0 << COMN1SW_SHIFT))
94
95#define CONTROL2_LOWPWR_SHIFT (0)
96#define CONTROL2_ADCEN_SHIFT (1)
97#define CONTROL2_CPEN_SHIFT (2)
98#define CONTROL2_SFOUTASRT_SHIFT (3)
99#define CONTROL2_SFOUTORD_SHIFT (4)
100#define CONTROL2_ACCDET_SHIFT (5)
101#define CONTROL2_USBCPINT_SHIFT (6)
102#define CONTROL2_RCPS_SHIFT (7)
103#define CONTROL2_LOWPWR_MASK (0x1 << CONTROL2_LOWPWR_SHIFT)
104#define CONTROL2_ADCEN_MASK (0x1 << CONTROL2_ADCEN_SHIFT)
105#define CONTROL2_CPEN_MASK (0x1 << CONTROL2_CPEN_SHIFT)
106#define CONTROL2_SFOUTASRT_MASK (0x1 << CONTROL2_SFOUTASRT_SHIFT)
107#define CONTROL2_SFOUTORD_MASK (0x1 << CONTROL2_SFOUTORD_SHIFT)
108#define CONTROL2_ACCDET_MASK (0x1 << CONTROL2_ACCDET_SHIFT)
109#define CONTROL2_USBCPINT_MASK (0x1 << CONTROL2_USBCPINT_SHIFT)
110#define CONTROL2_RCPS_MASK (0x1 << CONTROL2_RCPS_SHIFT)
111
112#define CONTROL3_JIGSET_SHIFT (0)
113#define CONTROL3_BTLDSET_SHIFT (2)
114#define CONTROL3_ADCDBSET_SHIFT (4)
115#define CONTROL3_JIGSET_MASK (0x3 << CONTROL3_JIGSET_SHIFT)
116#define CONTROL3_BTLDSET_MASK (0x3 << CONTROL3_BTLDSET_SHIFT)
117#define CONTROL3_ADCDBSET_MASK (0x3 << CONTROL3_ADCDBSET_SHIFT)
118 34
119enum max77693_muic_adc_debounce_time { 35enum max77693_muic_adc_debounce_time {
120 ADC_DEBOUNCE_TIME_5MS = 0, 36 ADC_DEBOUNCE_TIME_5MS = 0,
@@ -127,14 +43,40 @@ struct max77693_muic_info {
127 struct device *dev; 43 struct device *dev;
128 struct max77693_dev *max77693; 44 struct max77693_dev *max77693;
129 struct extcon_dev *edev; 45 struct extcon_dev *edev;
130 int prev_adc; 46 int prev_cable_type;
131 int prev_adc_gnd; 47 int prev_cable_type_gnd;
132 int prev_chg_type; 48 int prev_chg_type;
49 int prev_button_type;
133 u8 status[2]; 50 u8 status[2];
134 51
135 int irq; 52 int irq;
136 struct work_struct irq_work; 53 struct work_struct irq_work;
137 struct mutex mutex; 54 struct mutex mutex;
55
56 /*
57 * Use delayed workqueue to detect cable state and then
58 * notify cable state to notifiee/platform through uevent.
59 * After completing the booting of platform, the extcon provider
60 * driver should notify cable state to upper layer.
61 */
62 struct delayed_work wq_detcable;
63
64 /* Button of dock device */
65 struct input_dev *dock;
66
67 /*
68 * Default usb/uart path whether UART/USB or AUX_UART/AUX_USB
69 * h/w path of COMP2/COMN1 on CONTROL1 register.
70 */
71 int path_usb;
72 int path_uart;
73};
74
75enum max77693_muic_cable_group {
76 MAX77693_CABLE_GROUP_ADC = 0,
77 MAX77693_CABLE_GROUP_ADC_GND,
78 MAX77693_CABLE_GROUP_CHG,
79 MAX77693_CABLE_GROUP_VBVOLT,
138}; 80};
139 81
140enum max77693_muic_charger_type { 82enum max77693_muic_charger_type {
@@ -215,27 +157,59 @@ enum max77693_muic_acc_type {
215 157
216 /* The below accessories have same ADC value so ADCLow and 158 /* The below accessories have same ADC value so ADCLow and
217 ADC1K bit is used to separate specific accessory */ 159 ADC1K bit is used to separate specific accessory */
218 MAX77693_MUIC_GND_USB_OTG = 0x100, /* ADC:0x0, ADCLow:0, ADC1K:0 */ 160 MAX77693_MUIC_GND_USB_OTG = 0x100, /* ADC:0x0, VBVolot:0, ADCLow:0, ADC1K:0 */
219 MAX77693_MUIC_GND_AV_CABLE_LOAD = 0x102,/* ADC:0x0, ADCLow:1, ADC1K:0 */ 161 MAX77693_MUIC_GND_USB_OTG_VB = 0x104, /* ADC:0x0, VBVolot:1, ADCLow:0, ADC1K:0 */
220 MAX77693_MUIC_GND_MHL_CABLE = 0x103, /* ADC:0x0, ADCLow:1, ADC1K:1 */ 162 MAX77693_MUIC_GND_AV_CABLE_LOAD = 0x102,/* ADC:0x0, VBVolot:0, ADCLow:1, ADC1K:0 */
163 MAX77693_MUIC_GND_MHL = 0x103, /* ADC:0x0, VBVolot:0, ADCLow:1, ADC1K:1 */
164 MAX77693_MUIC_GND_MHL_VB = 0x107, /* ADC:0x0, VBVolot:1, ADCLow:1, ADC1K:1 */
221}; 165};
222 166
223/* MAX77693 MUIC device support below list of accessories(external connector) */ 167/* MAX77693 MUIC device support below list of accessories(external connector) */
224const char *max77693_extcon_cable[] = { 168enum {
225 [0] = "USB", 169 EXTCON_CABLE_USB = 0,
226 [1] = "USB-Host", 170 EXTCON_CABLE_USB_HOST,
227 [2] = "TA", 171 EXTCON_CABLE_TA,
228 [3] = "Fast-charger", 172 EXTCON_CABLE_FAST_CHARGER,
229 [4] = "Slow-charger", 173 EXTCON_CABLE_SLOW_CHARGER,
230 [5] = "Charge-downstream", 174 EXTCON_CABLE_CHARGE_DOWNSTREAM,
231 [6] = "MHL", 175 EXTCON_CABLE_MHL,
232 [7] = "Audio-video-load", 176 EXTCON_CABLE_MHL_TA,
233 [8] = "Audio-video-noload", 177 EXTCON_CABLE_JIG_USB_ON,
234 [9] = "JIG", 178 EXTCON_CABLE_JIG_USB_OFF,
179 EXTCON_CABLE_JIG_UART_OFF,
180 EXTCON_CABLE_JIG_UART_ON,
181 EXTCON_CABLE_DOCK_SMART,
182 EXTCON_CABLE_DOCK_DESK,
183 EXTCON_CABLE_DOCK_AUDIO,
184
185 _EXTCON_CABLE_NUM,
186};
187
188static const char *max77693_extcon_cable[] = {
189 [EXTCON_CABLE_USB] = "USB",
190 [EXTCON_CABLE_USB_HOST] = "USB-Host",
191 [EXTCON_CABLE_TA] = "TA",
192 [EXTCON_CABLE_FAST_CHARGER] = "Fast-charger",
193 [EXTCON_CABLE_SLOW_CHARGER] = "Slow-charger",
194 [EXTCON_CABLE_CHARGE_DOWNSTREAM] = "Charge-downstream",
195 [EXTCON_CABLE_MHL] = "MHL",
196 [EXTCON_CABLE_MHL_TA] = "MHL_TA",
197 [EXTCON_CABLE_JIG_USB_ON] = "JIG-USB-ON",
198 [EXTCON_CABLE_JIG_USB_OFF] = "JIG-USB-OFF",
199 [EXTCON_CABLE_JIG_UART_OFF] = "JIG-UART-OFF",
200 [EXTCON_CABLE_JIG_UART_ON] = "Dock-Car",
201 [EXTCON_CABLE_DOCK_SMART] = "Dock-Smart",
202 [EXTCON_CABLE_DOCK_DESK] = "Dock-Desk",
203 [EXTCON_CABLE_DOCK_AUDIO] = "Dock-Audio",
235 204
236 NULL, 205 NULL,
237}; 206};
238 207
208/*
209 * max77693_muic_set_debounce_time - Set the debounce time of ADC
210 * @info: the instance including private data of max77693 MUIC
211 * @time: the debounce time of ADC
212 */
239static int max77693_muic_set_debounce_time(struct max77693_muic_info *info, 213static int max77693_muic_set_debounce_time(struct max77693_muic_info *info,
240 enum max77693_muic_adc_debounce_time time) 214 enum max77693_muic_adc_debounce_time time)
241{ 215{
@@ -250,18 +224,29 @@ static int max77693_muic_set_debounce_time(struct max77693_muic_info *info,
250 MAX77693_MUIC_REG_CTRL3, 224 MAX77693_MUIC_REG_CTRL3,
251 time << CONTROL3_ADCDBSET_SHIFT, 225 time << CONTROL3_ADCDBSET_SHIFT,
252 CONTROL3_ADCDBSET_MASK); 226 CONTROL3_ADCDBSET_MASK);
253 if (ret) 227 if (ret) {
254 dev_err(info->dev, "failed to set ADC debounce time\n"); 228 dev_err(info->dev, "failed to set ADC debounce time\n");
229 return -EAGAIN;
230 }
255 break; 231 break;
256 default: 232 default:
257 dev_err(info->dev, "invalid ADC debounce time\n"); 233 dev_err(info->dev, "invalid ADC debounce time\n");
258 ret = -EINVAL; 234 return -EINVAL;
259 break;
260 } 235 }
261 236
262 return ret; 237 return 0;
263}; 238};
264 239
240/*
241 * max77693_muic_set_path - Set hardware line according to attached cable
242 * @info: the instance including private data of max77693 MUIC
243 * @value: the path according to attached cable
244 * @attached: the state of cable (true:attached, false:detached)
245 *
246 * The max77693 MUIC device share outside H/W line among a varity of cables
247 * so, this function set internal path of H/W line according to the type of
248 * attached cable.
249 */
265static int max77693_muic_set_path(struct max77693_muic_info *info, 250static int max77693_muic_set_path(struct max77693_muic_info *info,
266 u8 val, bool attached) 251 u8 val, bool attached)
267{ 252{
@@ -277,7 +262,7 @@ static int max77693_muic_set_path(struct max77693_muic_info *info,
277 MAX77693_MUIC_REG_CTRL1, ctrl1, COMP_SW_MASK); 262 MAX77693_MUIC_REG_CTRL1, ctrl1, COMP_SW_MASK);
278 if (ret < 0) { 263 if (ret < 0) {
279 dev_err(info->dev, "failed to update MUIC register\n"); 264 dev_err(info->dev, "failed to update MUIC register\n");
280 goto out; 265 return -EAGAIN;
281 } 266 }
282 267
283 if (attached) 268 if (attached)
@@ -290,141 +275,457 @@ static int max77693_muic_set_path(struct max77693_muic_info *info,
290 CONTROL2_LOWPWR_MASK | CONTROL2_CPEN_MASK); 275 CONTROL2_LOWPWR_MASK | CONTROL2_CPEN_MASK);
291 if (ret < 0) { 276 if (ret < 0) {
292 dev_err(info->dev, "failed to update MUIC register\n"); 277 dev_err(info->dev, "failed to update MUIC register\n");
293 goto out; 278 return -EAGAIN;
294 } 279 }
295 280
296 dev_info(info->dev, 281 dev_info(info->dev,
297 "CONTROL1 : 0x%02x, CONTROL2 : 0x%02x, state : %s\n", 282 "CONTROL1 : 0x%02x, CONTROL2 : 0x%02x, state : %s\n",
298 ctrl1, ctrl2, attached ? "attached" : "detached"); 283 ctrl1, ctrl2, attached ? "attached" : "detached");
299out: 284
300 return ret; 285 return 0;
301} 286}
302 287
303static int max77693_muic_adc_ground_handler(struct max77693_muic_info *info, 288/*
304 bool attached) 289 * max77693_muic_get_cable_type - Return cable type and check cable state
290 * @info: the instance including private data of max77693 MUIC
291 * @group: the path according to attached cable
292 * @attached: store cable state and return
293 *
294 * This function check the cable state either attached or detached,
295 * and then divide precise type of cable according to cable group.
296 * - MAX77693_CABLE_GROUP_ADC
297 * - MAX77693_CABLE_GROUP_ADC_GND
298 * - MAX77693_CABLE_GROUP_CHG
299 * - MAX77693_CABLE_GROUP_VBVOLT
300 */
301static int max77693_muic_get_cable_type(struct max77693_muic_info *info,
302 enum max77693_muic_cable_group group, bool *attached)
305{ 303{
306 int ret = 0; 304 int cable_type = 0;
307 int type; 305 int adc;
308 int adc, adc1k, adclow; 306 int adc1k;
307 int adclow;
308 int vbvolt;
309 int chg_type;
310
311 switch (group) {
312 case MAX77693_CABLE_GROUP_ADC:
313 /*
314 * Read ADC value to check cable type and decide cable state
315 * according to cable type
316 */
317 adc = info->status[0] & STATUS1_ADC_MASK;
318 adc >>= STATUS1_ADC_SHIFT;
319
320 /*
321 * Check current cable state/cable type and store cable type
322 * (info->prev_cable_type) for handling cable when cable is
323 * detached.
324 */
325 if (adc == MAX77693_MUIC_ADC_OPEN) {
326 *attached = false;
327
328 cable_type = info->prev_cable_type;
329 info->prev_cable_type = MAX77693_MUIC_ADC_OPEN;
330 } else {
331 *attached = true;
332
333 cable_type = info->prev_cable_type = adc;
334 }
335 break;
336 case MAX77693_CABLE_GROUP_ADC_GND:
337 /*
338 * Read ADC value to check cable type and decide cable state
339 * according to cable type
340 */
341 adc = info->status[0] & STATUS1_ADC_MASK;
342 adc >>= STATUS1_ADC_SHIFT;
343
344 /*
345 * Check current cable state/cable type and store cable type
346 * (info->prev_cable_type/_gnd) for handling cable when cable
347 * is detached.
348 */
349 if (adc == MAX77693_MUIC_ADC_OPEN) {
350 *attached = false;
351
352 cable_type = info->prev_cable_type_gnd;
353 info->prev_cable_type_gnd = MAX77693_MUIC_ADC_OPEN;
354 } else {
355 *attached = true;
356
357 adclow = info->status[0] & STATUS1_ADCLOW_MASK;
358 adclow >>= STATUS1_ADCLOW_SHIFT;
359 adc1k = info->status[0] & STATUS1_ADC1K_MASK;
360 adc1k >>= STATUS1_ADC1K_SHIFT;
361
362 vbvolt = info->status[1] & STATUS2_VBVOLT_MASK;
363 vbvolt >>= STATUS2_VBVOLT_SHIFT;
364
365 /**
366 * [0x1][VBVolt][ADCLow][ADC1K]
367 * [0x1 0 0 0 ] : USB_OTG
368 * [0x1 1 0 0 ] : USB_OTG_VB
369 * [0x1 0 1 0 ] : Audio Video Cable with load
370 * [0x1 0 1 1 ] : MHL without charging connector
371 * [0x1 1 1 1 ] : MHL with charging connector
372 */
373 cable_type = ((0x1 << 8)
374 | (vbvolt << 2)
375 | (adclow << 1)
376 | adc1k);
377
378 info->prev_cable_type = adc;
379 info->prev_cable_type_gnd = cable_type;
380 }
309 381
310 if (attached) { 382 break;
383 case MAX77693_CABLE_GROUP_CHG:
384 /*
385 * Read charger type to check cable type and decide cable state
386 * according to type of charger cable.
387 */
388 chg_type = info->status[1] & STATUS2_CHGTYP_MASK;
389 chg_type >>= STATUS2_CHGTYP_SHIFT;
390
391 if (chg_type == MAX77693_CHARGER_TYPE_NONE) {
392 *attached = false;
393
394 cable_type = info->prev_chg_type;
395 info->prev_chg_type = MAX77693_CHARGER_TYPE_NONE;
396 } else {
397 *attached = true;
398
399 /*
400 * Check current cable state/cable type and store cable
401 * type(info->prev_chg_type) for handling cable when
402 * charger cable is detached.
403 */
404 cable_type = info->prev_chg_type = chg_type;
405 }
406
407 break;
408 case MAX77693_CABLE_GROUP_VBVOLT:
409 /*
410 * Read ADC value to check cable type and decide cable state
411 * according to cable type
412 */
311 adc = info->status[0] & STATUS1_ADC_MASK; 413 adc = info->status[0] & STATUS1_ADC_MASK;
312 adclow = info->status[0] & STATUS1_ADCLOW_MASK; 414 adc >>= STATUS1_ADC_SHIFT;
313 adclow >>= STATUS1_ADCLOW_SHIFT; 415 chg_type = info->status[1] & STATUS2_CHGTYP_MASK;
314 adc1k = info->status[0] & STATUS1_ADC1K_MASK; 416 chg_type >>= STATUS2_CHGTYP_SHIFT;
315 adc1k >>= STATUS1_ADC1K_SHIFT; 417
316 418 if (adc == MAX77693_MUIC_ADC_OPEN
317 /** 419 && chg_type == MAX77693_CHARGER_TYPE_NONE)
318 * [0x1][ADCLow][ADC1K] 420 *attached = false;
319 * [0x1 0 0 ] : USB_OTG 421 else
320 * [0x1 1 0 ] : Audio Video Cable with load 422 *attached = true;
321 * [0x1 1 1 ] : MHL 423
424 /*
425 * Read vbvolt field, if vbvolt is 1,
426 * this cable is used for charging.
427 */
428 vbvolt = info->status[1] & STATUS2_VBVOLT_MASK;
429 vbvolt >>= STATUS2_VBVOLT_SHIFT;
430
431 cable_type = vbvolt;
432 break;
433 default:
434 dev_err(info->dev, "Unknown cable group (%d)\n", group);
435 cable_type = -EINVAL;
436 break;
437 }
438
439 return cable_type;
440}
441
442static int max77693_muic_dock_handler(struct max77693_muic_info *info,
443 int cable_type, bool attached)
444{
445 int ret = 0;
446 int vbvolt;
447 bool cable_attached;
448 char dock_name[CABLE_NAME_MAX];
449
450 dev_info(info->dev,
451 "external connector is %s (adc:0x%02x)\n",
452 attached ? "attached" : "detached", cable_type);
453
454 switch (cable_type) {
455 case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */
456 /*
457 * Check power cable whether attached or detached state.
458 * The Dock-Smart device need surely external power supply.
459 * If power cable(USB/TA) isn't connected to Dock device,
460 * user can't use Dock-Smart for desktop mode.
461 */
462 vbvolt = max77693_muic_get_cable_type(info,
463 MAX77693_CABLE_GROUP_VBVOLT, &cable_attached);
464 if (attached && !vbvolt) {
465 dev_warn(info->dev,
466 "Cannot detect external power supply\n");
467 return 0;
468 }
469
470 /*
471 * Notify Dock-Smart/MHL state.
472 * - Dock-Smart device include three type of cable which
473 * are HDMI, USB for mouse/keyboard and micro-usb port
474 * for USB/TA cable. Dock-Smart device need always exteranl
475 * power supply(USB/TA cable through micro-usb cable). Dock-
476 * Smart device support screen output of target to separate
477 * monitor and mouse/keyboard for desktop mode.
478 *
479 * Features of 'USB/TA cable with Dock-Smart device'
480 * - Support MHL
481 * - Support external output feature of audio
482 * - Support charging through micro-usb port without data
483 * connection if TA cable is connected to target.
484 * - Support charging and data connection through micro-usb port
485 * if USB cable is connected between target and host
486 * device.
487 * - Support OTG device (Mouse/Keyboard)
322 */ 488 */
323 type = ((0x1 << 8) | (adclow << 1) | adc1k); 489 ret = max77693_muic_set_path(info, info->path_usb, attached);
490 if (ret < 0)
491 return ret;
492
493 extcon_set_cable_state(info->edev, "Dock-Smart", attached);
494 extcon_set_cable_state(info->edev, "MHL", attached);
495 goto out;
496 case MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON: /* Dock-Car */
497 strcpy(dock_name, "Dock-Car");
498 break;
499 case MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE: /* Dock-Desk */
500 strcpy(dock_name, "Dock-Desk");
501 break;
502 case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */
503 strcpy(dock_name, "Dock-Audio");
504 if (!attached)
505 extcon_set_cable_state(info->edev, "USB", false);
506 break;
507 default:
508 dev_err(info->dev, "failed to detect %s dock device\n",
509 attached ? "attached" : "detached");
510 return -EINVAL;
511 }
512
513 /* Dock-Car/Desk/Audio, PATH:AUDIO */
514 ret = max77693_muic_set_path(info, CONTROL1_SW_AUDIO, attached);
515 if (ret < 0)
516 return ret;
517 extcon_set_cable_state(info->edev, dock_name, attached);
518
519out:
520 return 0;
521}
522
523static int max77693_muic_dock_button_handler(struct max77693_muic_info *info,
524 int button_type, bool attached)
525{
526 struct input_dev *dock = info->dock;
527 unsigned int code;
528
529 switch (button_type) {
530 case MAX77693_MUIC_ADC_REMOTE_S3_BUTTON-1
531 ... MAX77693_MUIC_ADC_REMOTE_S3_BUTTON+1:
532 /* DOCK_KEY_PREV */
533 code = KEY_PREVIOUSSONG;
534 break;
535 case MAX77693_MUIC_ADC_REMOTE_S7_BUTTON-1
536 ... MAX77693_MUIC_ADC_REMOTE_S7_BUTTON+1:
537 /* DOCK_KEY_NEXT */
538 code = KEY_NEXTSONG;
539 break;
540 case MAX77693_MUIC_ADC_REMOTE_S9_BUTTON:
541 /* DOCK_VOL_DOWN */
542 code = KEY_VOLUMEDOWN;
543 break;
544 case MAX77693_MUIC_ADC_REMOTE_S10_BUTTON:
545 /* DOCK_VOL_UP */
546 code = KEY_VOLUMEUP;
547 break;
548 case MAX77693_MUIC_ADC_REMOTE_S12_BUTTON-1
549 ... MAX77693_MUIC_ADC_REMOTE_S12_BUTTON+1:
550 /* DOCK_KEY_PLAY_PAUSE */
551 code = KEY_PLAYPAUSE;
552 break;
553 default:
554 dev_err(info->dev,
555 "failed to detect %s key (adc:0x%x)\n",
556 attached ? "pressed" : "released", button_type);
557 return -EINVAL;
558 }
559
560 input_event(dock, EV_KEY, code, attached);
561 input_sync(dock);
562
563 return 0;
564}
324 565
325 /* Store previous ADC value to handle accessory 566static int max77693_muic_adc_ground_handler(struct max77693_muic_info *info)
326 when accessory will be detached */ 567{
327 info->prev_adc = adc; 568 int cable_type_gnd;
328 info->prev_adc_gnd = type; 569 int ret = 0;
329 } else 570 bool attached;
330 type = info->prev_adc_gnd;
331 571
332 switch (type) { 572 cable_type_gnd = max77693_muic_get_cable_type(info,
573 MAX77693_CABLE_GROUP_ADC_GND, &attached);
574
575 switch (cable_type_gnd) {
333 case MAX77693_MUIC_GND_USB_OTG: 576 case MAX77693_MUIC_GND_USB_OTG:
334 /* USB_OTG */ 577 case MAX77693_MUIC_GND_USB_OTG_VB:
578 /* USB_OTG, PATH: AP_USB */
335 ret = max77693_muic_set_path(info, CONTROL1_SW_USB, attached); 579 ret = max77693_muic_set_path(info, CONTROL1_SW_USB, attached);
336 if (ret < 0) 580 if (ret < 0)
337 goto out; 581 return ret;
338 extcon_set_cable_state(info->edev, "USB-Host", attached); 582 extcon_set_cable_state(info->edev, "USB-Host", attached);
339 break; 583 break;
340 case MAX77693_MUIC_GND_AV_CABLE_LOAD: 584 case MAX77693_MUIC_GND_AV_CABLE_LOAD:
341 /* Audio Video Cable with load */ 585 /* Audio Video Cable with load, PATH:AUDIO */
342 ret = max77693_muic_set_path(info, CONTROL1_SW_AUDIO, attached); 586 ret = max77693_muic_set_path(info, CONTROL1_SW_AUDIO, attached);
343 if (ret < 0) 587 if (ret < 0)
344 goto out; 588 return ret;
345 extcon_set_cable_state(info->edev, 589 extcon_set_cable_state(info->edev,
346 "Audio-video-load", attached); 590 "Audio-video-load", attached);
347 break; 591 break;
348 case MAX77693_MUIC_GND_MHL_CABLE: 592 case MAX77693_MUIC_GND_MHL:
349 /* MHL */ 593 case MAX77693_MUIC_GND_MHL_VB:
594 /* MHL or MHL with USB/TA cable */
350 extcon_set_cable_state(info->edev, "MHL", attached); 595 extcon_set_cable_state(info->edev, "MHL", attached);
351 break; 596 break;
352 default: 597 default:
353 dev_err(info->dev, "failed to detect %s accessory\n", 598 dev_err(info->dev, "failed to detect %s cable of gnd type\n",
354 attached ? "attached" : "detached"); 599 attached ? "attached" : "detached");
355 dev_err(info->dev, "- adc:0x%x, adclow:0x%x, adc1k:0x%x\n", 600 return -EINVAL;
356 adc, adclow, adc1k); 601 }
357 ret = -EINVAL; 602
603 return 0;
604}
605
606static int max77693_muic_jig_handler(struct max77693_muic_info *info,
607 int cable_type, bool attached)
608{
609 char cable_name[32];
610 int ret = 0;
611 u8 path = CONTROL1_SW_OPEN;
612
613 dev_info(info->dev,
614 "external connector is %s (adc:0x%02x)\n",
615 attached ? "attached" : "detached", cable_type);
616
617 switch (cable_type) {
618 case MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF: /* ADC_JIG_USB_OFF */
619 /* PATH:AP_USB */
620 strcpy(cable_name, "JIG-USB-OFF");
621 path = CONTROL1_SW_USB;
622 break;
623 case MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON: /* ADC_JIG_USB_ON */
624 /* PATH:AP_USB */
625 strcpy(cable_name, "JIG-USB-ON");
626 path = CONTROL1_SW_USB;
358 break; 627 break;
628 case MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF: /* ADC_JIG_UART_OFF */
629 /* PATH:AP_UART */
630 strcpy(cable_name, "JIG-UART-OFF");
631 path = CONTROL1_SW_UART;
632 break;
633 default:
634 dev_err(info->dev, "failed to detect %s jig cable\n",
635 attached ? "attached" : "detached");
636 return -EINVAL;
359 } 637 }
360 638
361out: 639 ret = max77693_muic_set_path(info, path, attached);
362 return ret; 640 if (ret < 0)
641 return ret;
642
643 extcon_set_cable_state(info->edev, cable_name, attached);
644
645 return 0;
363} 646}
364 647
365static int max77693_muic_adc_handler(struct max77693_muic_info *info, 648static int max77693_muic_adc_handler(struct max77693_muic_info *info)
366 int curr_adc, bool attached)
367{ 649{
650 int cable_type;
651 int button_type;
652 bool attached;
368 int ret = 0; 653 int ret = 0;
369 int adc;
370 654
371 if (attached) { 655 /* Check accessory state which is either detached or attached */
372 /* Store ADC value to handle accessory 656 cable_type = max77693_muic_get_cable_type(info,
373 when accessory will be detached */ 657 MAX77693_CABLE_GROUP_ADC, &attached);
374 info->prev_adc = curr_adc;
375 adc = curr_adc;
376 } else
377 adc = info->prev_adc;
378 658
379 dev_info(info->dev, 659 dev_info(info->dev,
380 "external connector is %s (adc:0x%02x, prev_adc:0x%x)\n", 660 "external connector is %s (adc:0x%02x, prev_adc:0x%x)\n",
381 attached ? "attached" : "detached", curr_adc, info->prev_adc); 661 attached ? "attached" : "detached", cable_type,
662 info->prev_cable_type);
382 663
383 switch (adc) { 664 switch (cable_type) {
384 case MAX77693_MUIC_ADC_GROUND: 665 case MAX77693_MUIC_ADC_GROUND:
385 /* USB_OTG/MHL/Audio */ 666 /* USB_OTG/MHL/Audio */
386 max77693_muic_adc_ground_handler(info, attached); 667 max77693_muic_adc_ground_handler(info);
387 break; 668 break;
388 case MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF: 669 case MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF:
389 case MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON: 670 case MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON:
390 /* USB */
391 ret = max77693_muic_set_path(info, CONTROL1_SW_USB, attached);
392 if (ret < 0)
393 goto out;
394 extcon_set_cable_state(info->edev, "USB", attached);
395 break;
396 case MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF: 671 case MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF:
397 case MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON:
398 /* JIG */ 672 /* JIG */
399 ret = max77693_muic_set_path(info, CONTROL1_SW_UART, attached); 673 ret = max77693_muic_jig_handler(info, cable_type, attached);
400 if (ret < 0) 674 if (ret < 0)
401 goto out; 675 return ret;
402 extcon_set_cable_state(info->edev, "JIG", attached);
403 break; 676 break;
404 case MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE: 677 case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */
405 /* Audio Video cable with no-load */ 678 case MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON: /* Dock-Car */
406 ret = max77693_muic_set_path(info, CONTROL1_SW_AUDIO, attached); 679 case MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE: /* Dock-Desk */
680 case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */
681 /*
682 * DOCK device
683 *
684 * The MAX77693 MUIC device can detect total 34 cable type
685 * except of charger cable and MUIC device didn't define
686 * specfic role of cable in the range of from 0x01 to 0x12
687 * of ADC value. So, can use/define cable with no role according
688 * to schema of hardware board.
689 */
690 ret = max77693_muic_dock_handler(info, cable_type, attached);
407 if (ret < 0) 691 if (ret < 0)
408 goto out; 692 return ret;
409 extcon_set_cable_state(info->edev, 693 break;
410 "Audio-video-noload", attached); 694 case MAX77693_MUIC_ADC_REMOTE_S3_BUTTON: /* DOCK_KEY_PREV */
695 case MAX77693_MUIC_ADC_REMOTE_S7_BUTTON: /* DOCK_KEY_NEXT */
696 case MAX77693_MUIC_ADC_REMOTE_S9_BUTTON: /* DOCK_VOL_DOWN */
697 case MAX77693_MUIC_ADC_REMOTE_S10_BUTTON: /* DOCK_VOL_UP */
698 case MAX77693_MUIC_ADC_REMOTE_S12_BUTTON: /* DOCK_KEY_PLAY_PAUSE */
699 /*
700 * Button of DOCK device
701 * - the Prev/Next/Volume Up/Volume Down/Play-Pause button
702 *
703 * The MAX77693 MUIC device can detect total 34 cable type
704 * except of charger cable and MUIC device didn't define
705 * specfic role of cable in the range of from 0x01 to 0x12
706 * of ADC value. So, can use/define cable with no role according
707 * to schema of hardware board.
708 */
709 if (attached)
710 button_type = info->prev_button_type = cable_type;
711 else
712 button_type = info->prev_button_type;
713
714 ret = max77693_muic_dock_button_handler(info, button_type,
715 attached);
716 if (ret < 0)
717 return ret;
411 break; 718 break;
412 case MAX77693_MUIC_ADC_SEND_END_BUTTON: 719 case MAX77693_MUIC_ADC_SEND_END_BUTTON:
413 case MAX77693_MUIC_ADC_REMOTE_S1_BUTTON: 720 case MAX77693_MUIC_ADC_REMOTE_S1_BUTTON:
414 case MAX77693_MUIC_ADC_REMOTE_S2_BUTTON: 721 case MAX77693_MUIC_ADC_REMOTE_S2_BUTTON:
415 case MAX77693_MUIC_ADC_REMOTE_S3_BUTTON:
416 case MAX77693_MUIC_ADC_REMOTE_S4_BUTTON: 722 case MAX77693_MUIC_ADC_REMOTE_S4_BUTTON:
417 case MAX77693_MUIC_ADC_REMOTE_S5_BUTTON: 723 case MAX77693_MUIC_ADC_REMOTE_S5_BUTTON:
418 case MAX77693_MUIC_ADC_REMOTE_S6_BUTTON: 724 case MAX77693_MUIC_ADC_REMOTE_S6_BUTTON:
419 case MAX77693_MUIC_ADC_REMOTE_S7_BUTTON:
420 case MAX77693_MUIC_ADC_REMOTE_S8_BUTTON: 725 case MAX77693_MUIC_ADC_REMOTE_S8_BUTTON:
421 case MAX77693_MUIC_ADC_REMOTE_S9_BUTTON:
422 case MAX77693_MUIC_ADC_REMOTE_S10_BUTTON:
423 case MAX77693_MUIC_ADC_REMOTE_S11_BUTTON: 726 case MAX77693_MUIC_ADC_REMOTE_S11_BUTTON:
424 case MAX77693_MUIC_ADC_REMOTE_S12_BUTTON:
425 case MAX77693_MUIC_ADC_RESERVED_ACC_1: 727 case MAX77693_MUIC_ADC_RESERVED_ACC_1:
426 case MAX77693_MUIC_ADC_RESERVED_ACC_2: 728 case MAX77693_MUIC_ADC_RESERVED_ACC_2:
427 case MAX77693_MUIC_ADC_RESERVED_ACC_3:
428 case MAX77693_MUIC_ADC_RESERVED_ACC_4: 729 case MAX77693_MUIC_ADC_RESERVED_ACC_4:
429 case MAX77693_MUIC_ADC_RESERVED_ACC_5: 730 case MAX77693_MUIC_ADC_RESERVED_ACC_5:
430 case MAX77693_MUIC_ADC_CEA936_AUDIO: 731 case MAX77693_MUIC_ADC_CEA936_AUDIO:
@@ -432,60 +733,164 @@ static int max77693_muic_adc_handler(struct max77693_muic_info *info,
432 case MAX77693_MUIC_ADC_TTY_CONVERTER: 733 case MAX77693_MUIC_ADC_TTY_CONVERTER:
433 case MAX77693_MUIC_ADC_UART_CABLE: 734 case MAX77693_MUIC_ADC_UART_CABLE:
434 case MAX77693_MUIC_ADC_CEA936A_TYPE1_CHG: 735 case MAX77693_MUIC_ADC_CEA936A_TYPE1_CHG:
435 case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD:
436 case MAX77693_MUIC_ADC_CEA936A_TYPE2_CHG: 736 case MAX77693_MUIC_ADC_CEA936A_TYPE2_CHG:
437 /* This accessory isn't used in general case if it is specially 737 /*
438 needed to detect additional accessory, should implement 738 * This accessory isn't used in general case if it is specially
439 proper operation when this accessory is attached/detached. */ 739 * needed to detect additional accessory, should implement
740 * proper operation when this accessory is attached/detached.
741 */
440 dev_info(info->dev, 742 dev_info(info->dev,
441 "accessory is %s but it isn't used (adc:0x%x)\n", 743 "accessory is %s but it isn't used (adc:0x%x)\n",
442 attached ? "attached" : "detached", adc); 744 attached ? "attached" : "detached", cable_type);
443 goto out; 745 return -EAGAIN;
444 default: 746 default:
445 dev_err(info->dev, 747 dev_err(info->dev,
446 "failed to detect %s accessory (adc:0x%x)\n", 748 "failed to detect %s accessory (adc:0x%x)\n",
447 attached ? "attached" : "detached", adc); 749 attached ? "attached" : "detached", cable_type);
448 ret = -EINVAL; 750 return -EINVAL;
449 goto out;
450 } 751 }
451 752
452out: 753 return 0;
453 return ret;
454} 754}
455 755
456static int max77693_muic_chg_handler(struct max77693_muic_info *info, 756static int max77693_muic_chg_handler(struct max77693_muic_info *info)
457 int curr_chg_type, bool attached)
458{ 757{
459 int ret = 0;
460 int chg_type; 758 int chg_type;
759 int cable_type_gnd;
760 int cable_type;
761 bool attached;
762 bool cable_attached;
763 int ret = 0;
461 764
462 if (attached) { 765 chg_type = max77693_muic_get_cable_type(info,
463 /* Store previous charger type to control 766 MAX77693_CABLE_GROUP_CHG, &attached);
464 when charger accessory will be detached */
465 info->prev_chg_type = curr_chg_type;
466 chg_type = curr_chg_type;
467 } else
468 chg_type = info->prev_chg_type;
469 767
470 dev_info(info->dev, 768 dev_info(info->dev,
471 "external connector is %s(chg_type:0x%x, prev_chg_type:0x%x)\n", 769 "external connector is %s(chg_type:0x%x, prev_chg_type:0x%x)\n",
472 attached ? "attached" : "detached", 770 attached ? "attached" : "detached",
473 curr_chg_type, info->prev_chg_type); 771 chg_type, info->prev_chg_type);
474 772
475 switch (chg_type) { 773 switch (chg_type) {
476 case MAX77693_CHARGER_TYPE_USB: 774 case MAX77693_CHARGER_TYPE_USB:
477 ret = max77693_muic_set_path(info, CONTROL1_SW_USB, attached); 775 case MAX77693_CHARGER_TYPE_DEDICATED_CHG:
478 if (ret < 0) 776 case MAX77693_CHARGER_TYPE_NONE:
479 goto out; 777 /* Check MAX77693_CABLE_GROUP_ADC_GND type */
480 extcon_set_cable_state(info->edev, "USB", attached); 778 cable_type_gnd = max77693_muic_get_cable_type(info,
779 MAX77693_CABLE_GROUP_ADC_GND,
780 &cable_attached);
781 switch (cable_type_gnd) {
782 case MAX77693_MUIC_GND_MHL:
783 case MAX77693_MUIC_GND_MHL_VB:
784 /*
785 * MHL cable with MHL_TA(USB/TA) cable
786 * - MHL cable include two port(HDMI line and separate micro-
787 * usb port. When the target connect MHL cable, extcon driver
788 * check whether MHL_TA(USB/TA) cable is connected. If MHL_TA
789 * cable is connected, extcon driver notify state to notifiee
790 * for charging battery.
791 *
792 * Features of 'MHL_TA(USB/TA) with MHL cable'
793 * - Support MHL
794 * - Support charging through micro-usb port without data connection
795 */
796 extcon_set_cable_state(info->edev, "MHL_TA", attached);
797 if (!cable_attached)
798 extcon_set_cable_state(info->edev, "MHL", cable_attached);
799 break;
800 }
801
802 /* Check MAX77693_CABLE_GROUP_ADC type */
803 cable_type = max77693_muic_get_cable_type(info,
804 MAX77693_CABLE_GROUP_ADC,
805 &cable_attached);
806 switch (cable_type) {
807 case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */
808 /*
809 * Dock-Audio device with USB/TA cable
810 * - Dock device include two port(Dock-Audio and micro-usb
811 * port). When the target connect Dock-Audio device, extcon
812 * driver check whether USB/TA cable is connected. If USB/TA
813 * cable is connected, extcon driver notify state to notifiee
814 * for charging battery.
815 *
816 * Features of 'USB/TA cable with Dock-Audio device'
817 * - Support external output feature of audio.
818 * - Support charging through micro-usb port without data
819 * connection.
820 */
821 extcon_set_cable_state(info->edev, "USB", attached);
822
823 if (!cable_attached)
824 extcon_set_cable_state(info->edev, "Dock-Audio", cable_attached);
825 break;
826 case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */
827 /*
828 * Dock-Smart device with USB/TA cable
829 * - Dock-Desk device include three type of cable which
830 * are HDMI, USB for mouse/keyboard and micro-usb port
831 * for USB/TA cable. Dock-Smart device need always exteranl
832 * power supply(USB/TA cable through micro-usb cable). Dock-
833 * Smart device support screen output of target to separate
834 * monitor and mouse/keyboard for desktop mode.
835 *
836 * Features of 'USB/TA cable with Dock-Smart device'
837 * - Support MHL
838 * - Support external output feature of audio
839 * - Support charging through micro-usb port without data
840 * connection if TA cable is connected to target.
841 * - Support charging and data connection through micro-usb port
842 * if USB cable is connected between target and host
843 * device.
844 * - Support OTG device (Mouse/Keyboard)
845 */
846 ret = max77693_muic_set_path(info, info->path_usb, attached);
847 if (ret < 0)
848 return ret;
849
850 extcon_set_cable_state(info->edev, "Dock-Smart", attached);
851 extcon_set_cable_state(info->edev, "MHL", attached);
852
853 break;
854 }
855
856 /* Check MAX77693_CABLE_GROUP_CHG type */
857 switch (chg_type) {
858 case MAX77693_CHARGER_TYPE_NONE:
859 /*
860 * When MHL(with USB/TA cable) or Dock-Audio with USB/TA cable
861 * is attached, muic device happen below two interrupt.
862 * - 'MAX77693_MUIC_IRQ_INT1_ADC' for detecting MHL/Dock-Audio.
863 * - 'MAX77693_MUIC_IRQ_INT2_CHGTYP' for detecting USB/TA cable
864 * connected to MHL or Dock-Audio.
865 * Always, happen eariler MAX77693_MUIC_IRQ_INT1_ADC interrupt
866 * than MAX77693_MUIC_IRQ_INT2_CHGTYP interrupt.
867 *
868 * If user attach MHL (with USB/TA cable and immediately detach
869 * MHL with USB/TA cable before MAX77693_MUIC_IRQ_INT2_CHGTYP
870 * interrupt is happened, USB/TA cable remain connected state to
871 * target. But USB/TA cable isn't connected to target. The user
872 * be face with unusual action. So, driver should check this
873 * situation in spite of, that previous charger type is N/A.
874 */
875 break;
876 case MAX77693_CHARGER_TYPE_USB:
877 /* Only USB cable, PATH:AP_USB */
878 ret = max77693_muic_set_path(info, info->path_usb, attached);
879 if (ret < 0)
880 return ret;
881
882 extcon_set_cable_state(info->edev, "USB", attached);
883 break;
884 case MAX77693_CHARGER_TYPE_DEDICATED_CHG:
885 /* Only TA cable */
886 extcon_set_cable_state(info->edev, "TA", attached);
887 break;
888 }
481 break; 889 break;
482 case MAX77693_CHARGER_TYPE_DOWNSTREAM_PORT: 890 case MAX77693_CHARGER_TYPE_DOWNSTREAM_PORT:
483 extcon_set_cable_state(info->edev, 891 extcon_set_cable_state(info->edev,
484 "Charge-downstream", attached); 892 "Charge-downstream", attached);
485 break; 893 break;
486 case MAX77693_CHARGER_TYPE_DEDICATED_CHG:
487 extcon_set_cable_state(info->edev, "TA", attached);
488 break;
489 case MAX77693_CHARGER_TYPE_APPLE_500MA: 894 case MAX77693_CHARGER_TYPE_APPLE_500MA:
490 extcon_set_cable_state(info->edev, "Slow-charger", attached); 895 extcon_set_cable_state(info->edev, "Slow-charger", attached);
491 break; 896 break;
@@ -498,22 +903,18 @@ static int max77693_muic_chg_handler(struct max77693_muic_info *info,
498 dev_err(info->dev, 903 dev_err(info->dev,
499 "failed to detect %s accessory (chg_type:0x%x)\n", 904 "failed to detect %s accessory (chg_type:0x%x)\n",
500 attached ? "attached" : "detached", chg_type); 905 attached ? "attached" : "detached", chg_type);
501 ret = -EINVAL; 906 return -EINVAL;
502 goto out;
503 } 907 }
504 908
505out: 909 return 0;
506 return ret;
507} 910}
508 911
509static void max77693_muic_irq_work(struct work_struct *work) 912static void max77693_muic_irq_work(struct work_struct *work)
510{ 913{
511 struct max77693_muic_info *info = container_of(work, 914 struct max77693_muic_info *info = container_of(work,
512 struct max77693_muic_info, irq_work); 915 struct max77693_muic_info, irq_work);
513 int curr_adc, curr_chg_type;
514 int irq_type = -1; 916 int irq_type = -1;
515 int i, ret = 0; 917 int i, ret = 0;
516 bool attached = true;
517 918
518 if (!info->edev) 919 if (!info->edev)
519 return; 920 return;
@@ -539,14 +940,7 @@ static void max77693_muic_irq_work(struct work_struct *work)
539 case MAX77693_MUIC_IRQ_INT1_ADC1K: 940 case MAX77693_MUIC_IRQ_INT1_ADC1K:
540 /* Handle all of accessory except for 941 /* Handle all of accessory except for
541 type of charger accessory */ 942 type of charger accessory */
542 curr_adc = info->status[0] & STATUS1_ADC_MASK; 943 ret = max77693_muic_adc_handler(info);
543 curr_adc >>= STATUS1_ADC_SHIFT;
544
545 /* Check accessory state which is either detached or attached */
546 if (curr_adc == MAX77693_MUIC_ADC_OPEN)
547 attached = false;
548
549 ret = max77693_muic_adc_handler(info, curr_adc, attached);
550 break; 944 break;
551 case MAX77693_MUIC_IRQ_INT2_CHGTYP: 945 case MAX77693_MUIC_IRQ_INT2_CHGTYP:
552 case MAX77693_MUIC_IRQ_INT2_CHGDETREUN: 946 case MAX77693_MUIC_IRQ_INT2_CHGDETREUN:
@@ -555,15 +949,7 @@ static void max77693_muic_irq_work(struct work_struct *work)
555 case MAX77693_MUIC_IRQ_INT2_VBVOLT: 949 case MAX77693_MUIC_IRQ_INT2_VBVOLT:
556 case MAX77693_MUIC_IRQ_INT2_VIDRM: 950 case MAX77693_MUIC_IRQ_INT2_VIDRM:
557 /* Handle charger accessory */ 951 /* Handle charger accessory */
558 curr_chg_type = info->status[1] & STATUS2_CHGTYP_MASK; 952 ret = max77693_muic_chg_handler(info);
559 curr_chg_type >>= STATUS2_CHGTYP_SHIFT;
560
561 /* Check charger accessory state which
562 is either detached or attached */
563 if (curr_chg_type == MAX77693_CHARGER_TYPE_NONE)
564 attached = false;
565
566 ret = max77693_muic_chg_handler(info, curr_chg_type, attached);
567 break; 953 break;
568 case MAX77693_MUIC_IRQ_INT3_EOC: 954 case MAX77693_MUIC_IRQ_INT3_EOC:
569 case MAX77693_MUIC_IRQ_INT3_CGMBC: 955 case MAX77693_MUIC_IRQ_INT3_CGMBC:
@@ -575,7 +961,8 @@ static void max77693_muic_irq_work(struct work_struct *work)
575 default: 961 default:
576 dev_err(info->dev, "muic interrupt: irq %d occurred\n", 962 dev_err(info->dev, "muic interrupt: irq %d occurred\n",
577 irq_type); 963 irq_type);
578 break; 964 mutex_unlock(&info->mutex);
965 return;
579 } 966 }
580 967
581 if (ret < 0) 968 if (ret < 0)
@@ -604,7 +991,9 @@ static struct regmap_config max77693_muic_regmap_config = {
604static int max77693_muic_detect_accessory(struct max77693_muic_info *info) 991static int max77693_muic_detect_accessory(struct max77693_muic_info *info)
605{ 992{
606 int ret = 0; 993 int ret = 0;
607 int adc, chg_type; 994 int adc;
995 int chg_type;
996 bool attached;
608 997
609 mutex_lock(&info->mutex); 998 mutex_lock(&info->mutex);
610 999
@@ -617,35 +1006,39 @@ static int max77693_muic_detect_accessory(struct max77693_muic_info *info)
617 return -EINVAL; 1006 return -EINVAL;
618 } 1007 }
619 1008
620 adc = info->status[0] & STATUS1_ADC_MASK; 1009 adc = max77693_muic_get_cable_type(info, MAX77693_CABLE_GROUP_ADC,
621 adc >>= STATUS1_ADC_SHIFT; 1010 &attached);
622 1011 if (attached && adc != MAX77693_MUIC_ADC_OPEN) {
623 if (adc != MAX77693_MUIC_ADC_OPEN) { 1012 ret = max77693_muic_adc_handler(info);
624 dev_info(info->dev, 1013 if (ret < 0) {
625 "external connector is attached (adc:0x%02x)\n", adc); 1014 dev_err(info->dev, "Cannot detect accessory\n");
1015 mutex_unlock(&info->mutex);
1016 return ret;
1017 }
1018 }
626 1019
627 ret = max77693_muic_adc_handler(info, adc, true); 1020 chg_type = max77693_muic_get_cable_type(info, MAX77693_CABLE_GROUP_CHG,
628 if (ret < 0) 1021 &attached);
629 dev_err(info->dev, "failed to detect accessory\n"); 1022 if (attached && chg_type != MAX77693_CHARGER_TYPE_NONE) {
630 goto out; 1023 ret = max77693_muic_chg_handler(info);
1024 if (ret < 0) {
1025 dev_err(info->dev, "Cannot detect charger accessory\n");
1026 mutex_unlock(&info->mutex);
1027 return ret;
1028 }
631 } 1029 }
632 1030
633 chg_type = info->status[1] & STATUS2_CHGTYP_MASK; 1031 mutex_unlock(&info->mutex);
634 chg_type >>= STATUS2_CHGTYP_SHIFT;
635 1032
636 if (chg_type != MAX77693_CHARGER_TYPE_NONE) { 1033 return 0;
637 dev_info(info->dev, 1034}
638 "external connector is attached (chg_type:0x%x)\n",
639 chg_type);
640 1035
641 max77693_muic_chg_handler(info, chg_type, true); 1036static void max77693_muic_detect_cable_wq(struct work_struct *work)
642 if (ret < 0) 1037{
643 dev_err(info->dev, "failed to detect charger accessory\n"); 1038 struct max77693_muic_info *info = container_of(to_delayed_work(work),
644 } 1039 struct max77693_muic_info, wq_detcable);
645 1040
646out: 1041 max77693_muic_detect_accessory(info);
647 mutex_unlock(&info->mutex);
648 return ret;
649} 1042}
650 1043
651static int max77693_muic_probe(struct platform_device *pdev) 1044static int max77693_muic_probe(struct platform_device *pdev)
@@ -654,7 +1047,9 @@ static int max77693_muic_probe(struct platform_device *pdev)
654 struct max77693_platform_data *pdata = dev_get_platdata(max77693->dev); 1047 struct max77693_platform_data *pdata = dev_get_platdata(max77693->dev);
655 struct max77693_muic_platform_data *muic_pdata = pdata->muic_data; 1048 struct max77693_muic_platform_data *muic_pdata = pdata->muic_data;
656 struct max77693_muic_info *info; 1049 struct max77693_muic_info *info;
657 int ret, i; 1050 int delay_jiffies;
1051 int ret;
1052 int i;
658 u8 id; 1053 u8 id;
659 1054
660 info = devm_kzalloc(&pdev->dev, sizeof(struct max77693_muic_info), 1055 info = devm_kzalloc(&pdev->dev, sizeof(struct max77693_muic_info),
@@ -678,6 +1073,32 @@ static int max77693_muic_probe(struct platform_device *pdev)
678 return ret; 1073 return ret;
679 } 1074 }
680 } 1075 }
1076
1077 /* Register input device for button of dock device */
1078 info->dock = devm_input_allocate_device(&pdev->dev);
1079 if (!info->dock) {
1080 dev_err(&pdev->dev, "%s: failed to allocate input\n", __func__);
1081 return -ENOMEM;
1082 }
1083 info->dock->name = "max77693-muic/dock";
1084 info->dock->phys = "max77693-muic/extcon";
1085 info->dock->dev.parent = &pdev->dev;
1086
1087 __set_bit(EV_REP, info->dock->evbit);
1088
1089 input_set_capability(info->dock, EV_KEY, KEY_VOLUMEUP);
1090 input_set_capability(info->dock, EV_KEY, KEY_VOLUMEDOWN);
1091 input_set_capability(info->dock, EV_KEY, KEY_PLAYPAUSE);
1092 input_set_capability(info->dock, EV_KEY, KEY_PREVIOUSSONG);
1093 input_set_capability(info->dock, EV_KEY, KEY_NEXTSONG);
1094
1095 ret = input_register_device(info->dock);
1096 if (ret < 0) {
1097 dev_err(&pdev->dev, "Cannot register input device error(%d)\n",
1098 ret);
1099 return ret;
1100 }
1101
681 platform_set_drvdata(pdev, info); 1102 platform_set_drvdata(pdev, info);
682 mutex_init(&info->mutex); 1103 mutex_init(&info->mutex);
683 1104
@@ -697,13 +1118,13 @@ static int max77693_muic_probe(struct platform_device *pdev)
697 1118
698 ret = request_threaded_irq(virq, NULL, 1119 ret = request_threaded_irq(virq, NULL,
699 max77693_muic_irq_handler, 1120 max77693_muic_irq_handler,
700 IRQF_ONESHOT, muic_irq->name, info); 1121 IRQF_NO_SUSPEND,
1122 muic_irq->name, info);
701 if (ret) { 1123 if (ret) {
702 dev_err(&pdev->dev, 1124 dev_err(&pdev->dev,
703 "failed: irq request (IRQ: %d," 1125 "failed: irq request (IRQ: %d,"
704 " error :%d)\n", 1126 " error :%d)\n",
705 muic_irq->irq, ret); 1127 muic_irq->irq, ret);
706
707 goto err_irq; 1128 goto err_irq;
708 } 1129 }
709 } 1130 }
@@ -749,23 +1170,54 @@ static int max77693_muic_probe(struct platform_device *pdev)
749 = muic_pdata->init_data[i].data; 1170 = muic_pdata->init_data[i].data;
750 } 1171 }
751 1172
1173 /*
1174 * Default usb/uart path whether UART/USB or AUX_UART/AUX_USB
1175 * h/w path of COMP2/COMN1 on CONTROL1 register.
1176 */
1177 if (muic_pdata->path_uart)
1178 info->path_uart = muic_pdata->path_uart;
1179 else
1180 info->path_uart = CONTROL1_SW_UART;
1181
1182 if (muic_pdata->path_usb)
1183 info->path_usb = muic_pdata->path_usb;
1184 else
1185 info->path_usb = CONTROL1_SW_USB;
1186
1187 /* Set initial path for UART */
1188 max77693_muic_set_path(info, info->path_uart, true);
1189
752 /* Check revision number of MUIC device*/ 1190 /* Check revision number of MUIC device*/
753 ret = max77693_read_reg(info->max77693->regmap_muic, 1191 ret = max77693_read_reg(info->max77693->regmap_muic,
754 MAX77693_MUIC_REG_ID, &id); 1192 MAX77693_MUIC_REG_ID, &id);
755 if (ret < 0) { 1193 if (ret < 0) {
756 dev_err(&pdev->dev, "failed to read revision number\n"); 1194 dev_err(&pdev->dev, "failed to read revision number\n");
757 goto err_irq; 1195 goto err_extcon;
758 } 1196 }
759 dev_info(info->dev, "device ID : 0x%x\n", id); 1197 dev_info(info->dev, "device ID : 0x%x\n", id);
760 1198
761 /* Set ADC debounce time */ 1199 /* Set ADC debounce time */
762 max77693_muic_set_debounce_time(info, ADC_DEBOUNCE_TIME_25MS); 1200 max77693_muic_set_debounce_time(info, ADC_DEBOUNCE_TIME_25MS);
763 1201
764 /* Detect accessory on boot */ 1202 /*
765 max77693_muic_detect_accessory(info); 1203 * Detect accessory after completing the initialization of platform
1204 *
1205 * - Use delayed workqueue to detect cable state and then
1206 * notify cable state to notifiee/platform through uevent.
1207 * After completing the booting of platform, the extcon provider
1208 * driver should notify cable state to upper layer.
1209 */
1210 INIT_DELAYED_WORK(&info->wq_detcable, max77693_muic_detect_cable_wq);
1211 if (muic_pdata->detcable_delay_ms)
1212 delay_jiffies = msecs_to_jiffies(muic_pdata->detcable_delay_ms);
1213 else
1214 delay_jiffies = msecs_to_jiffies(DELAY_MS_DEFAULT);
1215 schedule_delayed_work(&info->wq_detcable, delay_jiffies);
766 1216
767 return ret; 1217 return ret;
768 1218
1219err_extcon:
1220 extcon_dev_unregister(info->edev);
769err_irq: 1221err_irq:
770 while (--i >= 0) 1222 while (--i >= 0)
771 free_irq(muic_irqs[i].virq, info); 1223 free_irq(muic_irqs[i].virq, info);
@@ -780,6 +1232,7 @@ static int max77693_muic_remove(struct platform_device *pdev)
780 for (i = 0; i < ARRAY_SIZE(muic_irqs); i++) 1232 for (i = 0; i < ARRAY_SIZE(muic_irqs); i++)
781 free_irq(muic_irqs[i].virq, info); 1233 free_irq(muic_irqs[i].virq, info);
782 cancel_work_sync(&info->irq_work); 1234 cancel_work_sync(&info->irq_work);
1235 input_unregister_device(info->dock);
783 extcon_dev_unregister(info->edev); 1236 extcon_dev_unregister(info->edev);
784 1237
785 return 0; 1238 return 0;
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-27 03:03:04 -0500