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authorChanwoo Choi <cw00.choi@samsung.com>2014-05-22 01:06:33 -0400
committerChanwoo Choi <cw00.choi@samsung.com>2014-07-22 21:22:30 -0400
commit914b881f9452fd615cc597b434fd8c0e12a7dae2 (patch)
tree00ca6bc5c90cca061921ef72b60847db3c38e5a9
parent17271f608bf818a13b2c235d45258311308d5b03 (diff)
extcon: sm5502: Add support new SM5502 extcon device driver
This patch add new SM5502 MUIC(Micro-USB Interface Controller) device by using EXTCON subsystem. The extcon-sm5502 driver is capable of identifying the type of the external power source and attached accessory. An external power sources, such as Deticated Charger or a standard USB port, are able to charge the battery in the smart phone via the connector. Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Diffstat
-rw-r--r--drivers/extcon/Kconfig10
-rw-r--r--drivers/extcon/Makefile1
-rw-r--r--drivers/extcon/extcon-sm5502.c620
-rw-r--r--include/linux/extcon/sm5502.h264
4 files changed, 895 insertions, 0 deletions
diff --git a/drivers/extcon/Kconfig b/drivers/extcon/Kconfig
index 9125eba6b3d6..6f2f4727de2c 100644
--- a/drivers/extcon/Kconfig
+++ b/drivers/extcon/Kconfig
@@ -70,4 +70,14 @@ config EXTCON_PALMAS
70 Say Y here to enable support for USB peripheral and USB host 70 Say Y here to enable support for USB peripheral and USB host
71 detection by palmas usb. 71 detection by palmas usb.
72 72
73config EXTCON_SM5502
74 tristate "SM5502 EXTCON support"
75 select IRQ_DOMAIN
76 select REGMAP_I2C
77 select REGMAP_IRQ
78 help
79 If you say yes here you get support for the MUIC device of
80 Silicon Mitus SM5502. The SM5502 is a USB port accessory
81 detector and switch.
82
73endif # MULTISTATE_SWITCH 83endif # MULTISTATE_SWITCH
diff --git a/drivers/extcon/Makefile b/drivers/extcon/Makefile
index e48abc6d230f..b38546eb522a 100644
--- a/drivers/extcon/Makefile
+++ b/drivers/extcon/Makefile
@@ -10,3 +10,4 @@ obj-$(CONFIG_EXTCON_MAX14577) += extcon-max14577.o
10obj-$(CONFIG_EXTCON_MAX77693) += extcon-max77693.o 10obj-$(CONFIG_EXTCON_MAX77693) += extcon-max77693.o
11obj-$(CONFIG_EXTCON_MAX8997) += extcon-max8997.o 11obj-$(CONFIG_EXTCON_MAX8997) += extcon-max8997.o
12obj-$(CONFIG_EXTCON_PALMAS) += extcon-palmas.o 12obj-$(CONFIG_EXTCON_PALMAS) += extcon-palmas.o
13obj-$(CONFIG_EXTCON_SM5502) += extcon-sm5502.o
diff --git a/drivers/extcon/extcon-sm5502.c b/drivers/extcon/extcon-sm5502.c
new file mode 100644
index 000000000000..9f318c222b89
--- /dev/null
+++ b/drivers/extcon/extcon-sm5502.c
@@ -0,0 +1,620 @@
1/*
2 * extcon-sm5502.c - Silicon Mitus SM5502 extcon drvier to support USB switches
3 *
4 * Copyright (c) 2014 Samsung Electronics Co., Ltd
5 * Author: Chanwoo Choi <cw00.choi@samsung.com>
6 *
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2 of the License, or (at your
10 * option) any later version.
11 *
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.
16 */
17
18#include <linux/err.h>
19#include <linux/i2c.h>
20#include <linux/input.h>
21#include <linux/interrupt.h>
22#include <linux/irqdomain.h>
23#include <linux/kernel.h>
24#include <linux/module.h>
25#include <linux/platform_device.h>
26#include <linux/regmap.h>
27#include <linux/slab.h>
28#include <linux/extcon.h>
29#include <linux/extcon/sm5502.h>
30
31struct muic_irq {
32 unsigned int irq;
33 const char *name;
34 unsigned int virq;
35};
36
37struct reg_data {
38 u8 reg;
39 unsigned int val;
40 bool invert;
41};
42
43struct sm5502_muic_info {
44 struct device *dev;
45 struct extcon_dev *edev;
46
47 struct i2c_client *i2c;
48 struct regmap *regmap;
49
50 struct regmap_irq_chip_data *irq_data;
51 struct muic_irq *muic_irqs;
52 unsigned int num_muic_irqs;
53 int irq;
54 bool irq_attach;
55 bool irq_detach;
56 struct work_struct irq_work;
57
58 struct reg_data *reg_data;
59 unsigned int num_reg_data;
60
61 struct mutex mutex;
62};
63
64/* Default value of SM5502 register to bring up MUIC device. */
65static struct reg_data sm5502_reg_data[] = {
66 {
67 .reg = SM5502_REG_CONTROL,
68 .val = SM5502_REG_CONTROL_MASK_INT_MASK,
69 .invert = false,
70 }, {
71 .reg = SM5502_REG_INTMASK1,
72 .val = SM5502_REG_INTM1_KP_MASK
73 | SM5502_REG_INTM1_LKP_MASK
74 | SM5502_REG_INTM1_LKR_MASK,
75 .invert = true,
76 }, {
77 .reg = SM5502_REG_INTMASK2,
78 .val = SM5502_REG_INTM2_VBUS_DET_MASK
79 | SM5502_REG_INTM2_REV_ACCE_MASK
80 | SM5502_REG_INTM2_ADC_CHG_MASK
81 | SM5502_REG_INTM2_STUCK_KEY_MASK
82 | SM5502_REG_INTM2_STUCK_KEY_RCV_MASK
83 | SM5502_REG_INTM2_MHL_MASK,
84 .invert = true,
85 },
86 { }
87};
88
89/* List of detectable cables */
90enum {
91 EXTCON_CABLE_USB = 0,
92 EXTCON_CABLE_USB_HOST,
93 EXTCON_CABLE_TA,
94
95 EXTCON_CABLE_END,
96};
97
98static const char *sm5502_extcon_cable[] = {
99 [EXTCON_CABLE_USB] = "USB",
100 [EXTCON_CABLE_USB_HOST] = "USB-Host",
101 [EXTCON_CABLE_TA] = "TA",
102 NULL,
103};
104
105/* Define supported accessory type */
106enum sm5502_muic_acc_type {
107 SM5502_MUIC_ADC_GROUND = 0x0,
108 SM5502_MUIC_ADC_SEND_END_BUTTON,
109 SM5502_MUIC_ADC_REMOTE_S1_BUTTON,
110 SM5502_MUIC_ADC_REMOTE_S2_BUTTON,
111 SM5502_MUIC_ADC_REMOTE_S3_BUTTON,
112 SM5502_MUIC_ADC_REMOTE_S4_BUTTON,
113 SM5502_MUIC_ADC_REMOTE_S5_BUTTON,
114 SM5502_MUIC_ADC_REMOTE_S6_BUTTON,
115 SM5502_MUIC_ADC_REMOTE_S7_BUTTON,
116 SM5502_MUIC_ADC_REMOTE_S8_BUTTON,
117 SM5502_MUIC_ADC_REMOTE_S9_BUTTON,
118 SM5502_MUIC_ADC_REMOTE_S10_BUTTON,
119 SM5502_MUIC_ADC_REMOTE_S11_BUTTON,
120 SM5502_MUIC_ADC_REMOTE_S12_BUTTON,
121 SM5502_MUIC_ADC_RESERVED_ACC_1,
122 SM5502_MUIC_ADC_RESERVED_ACC_2,
123 SM5502_MUIC_ADC_RESERVED_ACC_3,
124 SM5502_MUIC_ADC_RESERVED_ACC_4,
125 SM5502_MUIC_ADC_RESERVED_ACC_5,
126 SM5502_MUIC_ADC_AUDIO_TYPE2,
127 SM5502_MUIC_ADC_PHONE_POWERED_DEV,
128 SM5502_MUIC_ADC_TTY_CONVERTER,
129 SM5502_MUIC_ADC_UART_CABLE,
130 SM5502_MUIC_ADC_TYPE1_CHARGER,
131 SM5502_MUIC_ADC_FACTORY_MODE_BOOT_OFF_USB,
132 SM5502_MUIC_ADC_FACTORY_MODE_BOOT_ON_USB,
133 SM5502_MUIC_ADC_AUDIO_VIDEO_CABLE,
134 SM5502_MUIC_ADC_TYPE2_CHARGER,
135 SM5502_MUIC_ADC_FACTORY_MODE_BOOT_OFF_UART,
136 SM5502_MUIC_ADC_FACTORY_MODE_BOOT_ON_UART,
137 SM5502_MUIC_ADC_AUDIO_TYPE1,
138 SM5502_MUIC_ADC_OPEN = 0x1f,
139
140 /* The below accessories have same ADC value (0x1f or 0x1e).
141 So, Device type1 is used to separate specific accessory. */
142 /* |---------|--ADC| */
143 /* | [7:5]|[4:0]| */
144 SM5502_MUIC_ADC_AUDIO_TYPE1_FULL_REMOTE = 0x3e, /* | 001|11110| */
145 SM5502_MUIC_ADC_AUDIO_TYPE1_SEND_END = 0x5e, /* | 010|11110| */
146 /* |Dev Type1|--ADC| */
147 SM5502_MUIC_ADC_OPEN_USB = 0x5f, /* | 010|11111| */
148 SM5502_MUIC_ADC_OPEN_TA = 0xdf, /* | 110|11111| */
149 SM5502_MUIC_ADC_OPEN_USB_OTG = 0xff, /* | 111|11111| */
150};
151
152/* List of supported interrupt for SM5502 */
153static struct muic_irq sm5502_muic_irqs[] = {
154 { SM5502_IRQ_INT1_ATTACH, "muic-attach" },
155 { SM5502_IRQ_INT1_DETACH, "muic-detach" },
156 { SM5502_IRQ_INT1_KP, "muic-kp" },
157 { SM5502_IRQ_INT1_LKP, "muic-lkp" },
158 { SM5502_IRQ_INT1_LKR, "muic-lkr" },
159 { SM5502_IRQ_INT1_OVP_EVENT, "muic-ovp-event" },
160 { SM5502_IRQ_INT1_OCP_EVENT, "muic-ocp-event" },
161 { SM5502_IRQ_INT1_OVP_OCP_DIS, "muic-ovp-ocp-dis" },
162 { SM5502_IRQ_INT2_VBUS_DET, "muic-vbus-det" },
163 { SM5502_IRQ_INT2_REV_ACCE, "muic-rev-acce" },
164 { SM5502_IRQ_INT2_ADC_CHG, "muic-adc-chg" },
165 { SM5502_IRQ_INT2_STUCK_KEY, "muic-stuck-key" },
166 { SM5502_IRQ_INT2_STUCK_KEY_RCV, "muic-stuck-key-rcv" },
167 { SM5502_IRQ_INT2_MHL, "muic-mhl" },
168};
169
170/* Define interrupt list of SM5502 to register regmap_irq */
171static const struct regmap_irq sm5502_irqs[] = {
172 /* INT1 interrupts */
173 { .reg_offset = 0, .mask = SM5502_IRQ_INT1_ATTACH_MASK, },
174 { .reg_offset = 0, .mask = SM5502_IRQ_INT1_DETACH_MASK, },
175 { .reg_offset = 0, .mask = SM5502_IRQ_INT1_KP_MASK, },
176 { .reg_offset = 0, .mask = SM5502_IRQ_INT1_LKP_MASK, },
177 { .reg_offset = 0, .mask = SM5502_IRQ_INT1_LKR_MASK, },
178 { .reg_offset = 0, .mask = SM5502_IRQ_INT1_OVP_EVENT_MASK, },
179 { .reg_offset = 0, .mask = SM5502_IRQ_INT1_OCP_EVENT_MASK, },
180 { .reg_offset = 0, .mask = SM5502_IRQ_INT1_OVP_OCP_DIS_MASK, },
181
182 /* INT2 interrupts */
183 { .reg_offset = 1, .mask = SM5502_IRQ_INT2_VBUS_DET_MASK,},
184 { .reg_offset = 1, .mask = SM5502_IRQ_INT2_REV_ACCE_MASK, },
185 { .reg_offset = 1, .mask = SM5502_IRQ_INT2_ADC_CHG_MASK, },
186 { .reg_offset = 1, .mask = SM5502_IRQ_INT2_STUCK_KEY_MASK, },
187 { .reg_offset = 1, .mask = SM5502_IRQ_INT2_STUCK_KEY_RCV_MASK, },
188 { .reg_offset = 1, .mask = SM5502_IRQ_INT2_MHL_MASK, },
189};
190
191static const struct regmap_irq_chip sm5502_muic_irq_chip = {
192 .name = "sm5502",
193 .status_base = SM5502_REG_INT1,
194 .mask_base = SM5502_REG_INTMASK1,
195 .mask_invert = false,
196 .num_regs = 2,
197 .irqs = sm5502_irqs,
198 .num_irqs = ARRAY_SIZE(sm5502_irqs),
199};
200
201/* Define regmap configuration of SM5502 for I2C communication */
202static bool sm5502_muic_volatile_reg(struct device *dev, unsigned int reg)
203{
204 switch (reg) {
205 case SM5502_REG_INTMASK1:
206 case SM5502_REG_INTMASK2:
207 return true;
208 default:
209 break;
210 }
211 return false;
212}
213
214static const struct regmap_config sm5502_muic_regmap_config = {
215 .reg_bits = 8,
216 .val_bits = 8,
217 .volatile_reg = sm5502_muic_volatile_reg,
218 .max_register = SM5502_REG_END,
219};
220
221/* Return cable type of attached or detached accessories */
222static unsigned int sm5502_muic_get_cable_type(struct sm5502_muic_info *info)
223{
224 unsigned int cable_type = -1, adc, dev_type1;
225 int ret;
226
227 /* Read ADC value according to external cable or button */
228 ret = regmap_read(info->regmap, SM5502_REG_ADC, &adc);
229 if (ret) {
230 dev_err(info->dev, "failed to read ADC register\n");
231 return ret;
232 }
233
234 /*
235 * If ADC is SM5502_MUIC_ADC_GROUND(0x0), external cable hasn't
236 * connected with to MUIC device.
237 */
238 cable_type &= SM5502_REG_ADC_MASK;
239 if (cable_type == SM5502_MUIC_ADC_GROUND)
240 return SM5502_MUIC_ADC_GROUND;
241
242 switch (cable_type) {
243 case SM5502_MUIC_ADC_GROUND:
244 case SM5502_MUIC_ADC_SEND_END_BUTTON:
245 case SM5502_MUIC_ADC_REMOTE_S1_BUTTON:
246 case SM5502_MUIC_ADC_REMOTE_S2_BUTTON:
247 case SM5502_MUIC_ADC_REMOTE_S3_BUTTON:
248 case SM5502_MUIC_ADC_REMOTE_S4_BUTTON:
249 case SM5502_MUIC_ADC_REMOTE_S5_BUTTON:
250 case SM5502_MUIC_ADC_REMOTE_S6_BUTTON:
251 case SM5502_MUIC_ADC_REMOTE_S7_BUTTON:
252 case SM5502_MUIC_ADC_REMOTE_S8_BUTTON:
253 case SM5502_MUIC_ADC_REMOTE_S9_BUTTON:
254 case SM5502_MUIC_ADC_REMOTE_S10_BUTTON:
255 case SM5502_MUIC_ADC_REMOTE_S11_BUTTON:
256 case SM5502_MUIC_ADC_REMOTE_S12_BUTTON:
257 case SM5502_MUIC_ADC_RESERVED_ACC_1:
258 case SM5502_MUIC_ADC_RESERVED_ACC_2:
259 case SM5502_MUIC_ADC_RESERVED_ACC_3:
260 case SM5502_MUIC_ADC_RESERVED_ACC_4:
261 case SM5502_MUIC_ADC_RESERVED_ACC_5:
262 case SM5502_MUIC_ADC_AUDIO_TYPE2:
263 case SM5502_MUIC_ADC_PHONE_POWERED_DEV:
264 case SM5502_MUIC_ADC_TTY_CONVERTER:
265 case SM5502_MUIC_ADC_UART_CABLE:
266 case SM5502_MUIC_ADC_TYPE1_CHARGER:
267 case SM5502_MUIC_ADC_FACTORY_MODE_BOOT_OFF_USB:
268 case SM5502_MUIC_ADC_FACTORY_MODE_BOOT_ON_USB:
269 case SM5502_MUIC_ADC_AUDIO_VIDEO_CABLE:
270 case SM5502_MUIC_ADC_TYPE2_CHARGER:
271 case SM5502_MUIC_ADC_FACTORY_MODE_BOOT_OFF_UART:
272 case SM5502_MUIC_ADC_FACTORY_MODE_BOOT_ON_UART:
273 break;
274 case SM5502_MUIC_ADC_AUDIO_TYPE1:
275 /*
276 * Check whether cable type is
277 * SM5502_MUIC_ADC_AUDIO_TYPE1_FULL_REMOTE
278 * or SM5502_MUIC_ADC_AUDIO_TYPE1_SEND_END
279 * by using Button event.
280 */
281 break;
282 case SM5502_MUIC_ADC_OPEN:
283 ret = regmap_read(info->regmap, SM5502_REG_DEV_TYPE1,
284 &dev_type1);
285 if (ret) {
286 dev_err(info->dev, "failed to read DEV_TYPE1 reg\n");
287 return ret;
288 }
289
290 switch (dev_type1) {
291 case SM5502_REG_DEV_TYPE1_USB_SDP_MASK:
292 cable_type = SM5502_MUIC_ADC_OPEN_USB;
293 break;
294 case SM5502_REG_DEV_TYPE1_DEDICATED_CHG_MASK:
295 cable_type = SM5502_MUIC_ADC_OPEN_TA;
296 break;
297 case SM5502_REG_DEV_TYPE1_USB_OTG_MASK:
298 cable_type = SM5502_MUIC_ADC_OPEN_USB_OTG;
299 break;
300 default:
301 dev_dbg(info->dev,
302 "cannot identify the cable type: adc(0x%x) "
303 "dev_type1(0x%x)\n", adc, dev_type1);
304 return -EINVAL;
305 };
306 break;
307 default:
308 dev_err(info->dev,
309 "failed to identify the cable type: adc(0x%x)\n", adc);
310 return -EINVAL;
311 };
312
313 return cable_type;
314}
315
316static int sm5502_muic_cable_handler(struct sm5502_muic_info *info,
317 bool attached)
318{
319 static unsigned int prev_cable_type = SM5502_MUIC_ADC_GROUND;
320 const char **cable_names = info->edev->supported_cable;
321 unsigned int cable_type = SM5502_MUIC_ADC_GROUND;
322 unsigned int idx = 0;
323
324 if (!cable_names)
325 return 0;
326
327 /* Get the type of attached or detached cable */
328 if (attached)
329 cable_type = sm5502_muic_get_cable_type(info);
330 else if (!attached)
331 cable_type = prev_cable_type;
332 prev_cable_type = cable_type;
333
334 switch (cable_type) {
335 case SM5502_MUIC_ADC_OPEN_USB:
336 idx = EXTCON_CABLE_USB;
337 break;
338 case SM5502_MUIC_ADC_OPEN_TA:
339 idx = EXTCON_CABLE_TA;
340 break;
341 case SM5502_MUIC_ADC_OPEN_USB_OTG:
342 idx = EXTCON_CABLE_USB_HOST;
343 break;
344 default:
345 dev_dbg(info->dev,
346 "cannot handle this cable_type (0x%x)\n", cable_type);
347 return 0;
348 };
349
350 extcon_set_cable_state(info->edev, cable_names[idx], attached);
351
352 return 0;
353}
354
355static void sm5502_muic_irq_work(struct work_struct *work)
356{
357 struct sm5502_muic_info *info = container_of(work,
358 struct sm5502_muic_info, irq_work);
359 int ret = 0;
360
361 if (!info->edev)
362 return;
363
364 mutex_lock(&info->mutex);
365
366 /* Detect attached or detached cables */
367 if (info->irq_attach) {
368 ret = sm5502_muic_cable_handler(info, true);
369 info->irq_attach = false;
370 }
371 if (info->irq_detach) {
372 ret = sm5502_muic_cable_handler(info, false);
373 info->irq_detach = false;
374 }
375
376 if (ret < 0)
377 dev_err(info->dev, "failed to handle MUIC interrupt\n");
378
379 mutex_unlock(&info->mutex);
380
381 return;
382}
383
384/*
385 * Sets irq_attach or irq_detach in sm5502_muic_info and returns 0.
386 * Returns -ESRCH if irq_type does not match registered IRQ for this dev type.
387 */
388static int sm5502_parse_irq(struct sm5502_muic_info *info, int irq_type)
389{
390 switch (irq_type) {
391 case SM5502_IRQ_INT1_ATTACH:
392 info->irq_attach = true;
393 break;
394 case SM5502_IRQ_INT1_DETACH:
395 info->irq_detach = true;
396 break;
397 case SM5502_IRQ_INT1_KP:
398 case SM5502_IRQ_INT1_LKP:
399 case SM5502_IRQ_INT1_LKR:
400 case SM5502_IRQ_INT1_OVP_EVENT:
401 case SM5502_IRQ_INT1_OCP_EVENT:
402 case SM5502_IRQ_INT1_OVP_OCP_DIS:
403 case SM5502_IRQ_INT2_VBUS_DET:
404 case SM5502_IRQ_INT2_REV_ACCE:
405 case SM5502_IRQ_INT2_ADC_CHG:
406 case SM5502_IRQ_INT2_STUCK_KEY:
407 case SM5502_IRQ_INT2_STUCK_KEY_RCV:
408 case SM5502_IRQ_INT2_MHL:
409 default:
410 break;
411 }
412
413 return 0;
414}
415
416static irqreturn_t sm5502_muic_irq_handler(int irq, void *data)
417{
418 struct sm5502_muic_info *info = data;
419 int i, irq_type = -1, ret;
420
421 for (i = 0; i < info->num_muic_irqs; i++)
422 if (irq == info->muic_irqs[i].virq)
423 irq_type = info->muic_irqs[i].irq;
424
425 ret = sm5502_parse_irq(info, irq_type);
426 if (ret < 0) {
427 dev_warn(info->dev, "cannot handle is interrupt:%d\n",
428 irq_type);
429 return IRQ_HANDLED;
430 }
431 schedule_work(&info->irq_work);
432
433 return IRQ_HANDLED;
434}
435
436static void sm5502_init_dev_type(struct sm5502_muic_info *info)
437{
438 unsigned int reg_data, vendor_id, version_id;
439 int i, ret;
440
441 /* To test I2C, Print version_id and vendor_id of SM5502 */
442 ret = regmap_read(info->regmap, SM5502_REG_DEVICE_ID, &reg_data);
443 if (ret) {
444 dev_err(info->dev,
445 "failed to read DEVICE_ID register: %d\n", ret);
446 return;
447 }
448
449 vendor_id = ((reg_data & SM5502_REG_DEVICE_ID_VENDOR_MASK) >>
450 SM5502_REG_DEVICE_ID_VENDOR_SHIFT);
451 version_id = ((reg_data & SM5502_REG_DEVICE_ID_VERSION_MASK) >>
452 SM5502_REG_DEVICE_ID_VERSION_SHIFT);
453
454 dev_info(info->dev, "Device type: version: 0x%x, vendor: 0x%x\n",
455 version_id, vendor_id);
456
457 /* Initiazle the register of SM5502 device to bring-up */
458 for (i = 0; i < info->num_reg_data; i++) {
459 unsigned int val = 0;
460
461 if (!info->reg_data[i].invert)
462 val |= ~info->reg_data[i].val;
463 else
464 val = info->reg_data[i].val;
465 regmap_write(info->regmap, info->reg_data[i].reg, val);
466 }
467}
468
469static int sm5022_muic_i2c_probe(struct i2c_client *i2c,
470 const struct i2c_device_id *id)
471{
472 struct device_node *np = i2c->dev.of_node;
473 struct sm5502_muic_info *info;
474 int i, ret, irq_flags;
475
476 if (!np)
477 return -EINVAL;
478
479 info = devm_kzalloc(&i2c->dev, sizeof(*info), GFP_KERNEL);
480 if (!info)
481 return -ENOMEM;
482 i2c_set_clientdata(i2c, info);
483
484 info->dev = &i2c->dev;
485 info->i2c = i2c;
486 info->irq = i2c->irq;
487 info->muic_irqs = sm5502_muic_irqs;
488 info->num_muic_irqs = ARRAY_SIZE(sm5502_muic_irqs);
489 info->reg_data = sm5502_reg_data;
490 info->num_reg_data = ARRAY_SIZE(sm5502_reg_data);
491
492 mutex_init(&info->mutex);
493
494 INIT_WORK(&info->irq_work, sm5502_muic_irq_work);
495
496 info->regmap = devm_regmap_init_i2c(i2c, &sm5502_muic_regmap_config);
497 if (IS_ERR(info->regmap)) {
498 ret = PTR_ERR(info->regmap);
499 dev_err(info->dev, "failed to allocate register map: %d\n",
500 ret);
501 return ret;
502 }
503
504 /* Support irq domain for SM5502 MUIC device */
505 irq_flags = IRQF_TRIGGER_FALLING | IRQF_ONESHOT | IRQF_SHARED;
506 ret = regmap_add_irq_chip(info->regmap, info->irq, irq_flags, 0,
507 &sm5502_muic_irq_chip, &info->irq_data);
508 if (ret != 0) {
509 dev_err(info->dev, "failed to request IRQ %d: %d\n",
510 info->irq, ret);
511 return ret;
512 }
513
514 for (i = 0; i < info->num_muic_irqs; i++) {
515 struct muic_irq *muic_irq = &info->muic_irqs[i];
516 unsigned int virq = 0;
517
518 virq = regmap_irq_get_virq(info->irq_data, muic_irq->irq);
519 if (virq <= 0)
520 return -EINVAL;
521 muic_irq->virq = virq;
522
523 ret = devm_request_threaded_irq(info->dev, virq, NULL,
524 sm5502_muic_irq_handler,
525 IRQF_NO_SUSPEND,
526 muic_irq->name, info);
527 if (ret) {
528 dev_err(info->dev, "failed: irq request (IRQ: %d,"
529 " error :%d)\n", muic_irq->irq, ret);
530 return ret;
531 }
532 }
533
534 /* Allocate extcon device */
535 info->edev = devm_extcon_dev_allocate(info->dev, sm5502_extcon_cable);
536 if (IS_ERR(info->edev)) {
537 dev_err(info->dev, "failed to allocate memory for extcon\n");
538 return -ENOMEM;
539 }
540 info->edev->name = np->name;
541
542 /* Register extcon device */
543 ret = devm_extcon_dev_register(info->dev, info->edev);
544 if (ret) {
545 dev_err(info->dev, "failed to register extcon device\n");
546 return ret;
547 }
548
549 /* Initialize SM5502 device and print vendor id and version id */
550 sm5502_init_dev_type(info);
551
552 return 0;
553}
554
555static int sm5502_muic_i2c_remove(struct i2c_client *i2c)
556{
557 struct sm5502_muic_info *info = i2c_get_clientdata(i2c);
558
559 regmap_del_irq_chip(info->irq, info->irq_data);
560
561 return 0;
562}
563
564static struct of_device_id sm5502_dt_match[] = {
565 { .compatible = "siliconmitus,sm5502-muic" },
566 { },
567};
568
569#ifdef CONFIG_PM_SLEEP
570static int sm5502_muic_suspend(struct device *dev)
571{
572 struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
573 struct sm5502_muic_info *info = i2c_get_clientdata(i2c);
574
575 enable_irq_wake(info->irq);
576
577 return 0;
578}
579
580static int sm5502_muic_resume(struct device *dev)
581{
582 struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
583 struct sm5502_muic_info *info = i2c_get_clientdata(i2c);
584
585 disable_irq_wake(info->irq);
586
587 return 0;
588}
589#endif
590
591static SIMPLE_DEV_PM_OPS(sm5502_muic_pm_ops,
592 sm5502_muic_suspend, sm5502_muic_resume);
593
594static const struct i2c_device_id sm5502_i2c_id[] = {
595 { "sm5502", TYPE_SM5502 },
596 { }
597};
598MODULE_DEVICE_TABLE(i2c, sm5502_i2c_id);
599
600static struct i2c_driver sm5502_muic_i2c_driver = {
601 .driver = {
602 .name = "sm5502",
603 .owner = THIS_MODULE,
604 .pm = &sm5502_muic_pm_ops,
605 .of_match_table = sm5502_dt_match,
606 },
607 .probe = sm5022_muic_i2c_probe,
608 .remove = sm5502_muic_i2c_remove,
609 .id_table = sm5502_i2c_id,
610};
611
612static int __init sm5502_muic_i2c_init(void)
613{
614 return i2c_add_driver(&sm5502_muic_i2c_driver);
615}
616subsys_initcall(sm5502_muic_i2c_init);
617
618MODULE_DESCRIPTION("Silicon Mitus SM5502 Extcon driver");
619MODULE_AUTHOR("Chanwoo Choi <cw00.choi@samsung.com>");
620MODULE_LICENSE("GPL");
diff --git a/include/linux/extcon/sm5502.h b/include/linux/extcon/sm5502.h
new file mode 100644
index 000000000000..17bd6550c485
--- /dev/null
+++ b/include/linux/extcon/sm5502.h
@@ -0,0 +1,264 @@
1/*
2 * sm5502.h
3 *
4 * Copyright (c) 2014 Samsung Electronics Co., Ltd
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2 of the License, or (at your
9 * option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 */
16
17#ifndef __LINUX_EXTCON_SM5502_H
18#define __LINUX_EXTCON_SM5502_H
19
20enum sm5502_types {
21 TYPE_SM5502,
22};
23
24/* SM5502 registers */
25enum sm5502_reg {
26 SM5502_REG_DEVICE_ID = 0x01,
27 SM5502_REG_CONTROL,
28 SM5502_REG_INT1,
29 SM5502_REG_INT2,
30 SM5502_REG_INTMASK1,
31 SM5502_REG_INTMASK2,
32 SM5502_REG_ADC,
33 SM5502_REG_TIMING_SET1,
34 SM5502_REG_TIMING_SET2,
35 SM5502_REG_DEV_TYPE1,
36 SM5502_REG_DEV_TYPE2,
37 SM5502_REG_BUTTON1,
38 SM5502_REG_BUTTON2,
39 SM5502_REG_CAR_KIT_STATUS,
40 SM5502_REG_RSVD1,
41 SM5502_REG_RSVD2,
42 SM5502_REG_RSVD3,
43 SM5502_REG_RSVD4,
44 SM5502_REG_MANUAL_SW1,
45 SM5502_REG_MANUAL_SW2,
46 SM5502_REG_DEV_TYPE3,
47 SM5502_REG_RSVD5,
48 SM5502_REG_RSVD6,
49 SM5502_REG_RSVD7,
50 SM5502_REG_RSVD8,
51 SM5502_REG_RSVD9,
52 SM5502_REG_RESET,
53 SM5502_REG_RSVD10,
54 SM5502_REG_RESERVED_ID1,
55 SM5502_REG_RSVD11,
56 SM5502_REG_RSVD12,
57 SM5502_REG_RESERVED_ID2,
58 SM5502_REG_RSVD13,
59 SM5502_REG_OCP,
60 SM5502_REG_RSVD14,
61 SM5502_REG_RSVD15,
62 SM5502_REG_RSVD16,
63 SM5502_REG_RSVD17,
64 SM5502_REG_RSVD18,
65 SM5502_REG_RSVD19,
66 SM5502_REG_RSVD20,
67 SM5502_REG_RSVD21,
68 SM5502_REG_RSVD22,
69 SM5502_REG_RSVD23,
70 SM5502_REG_RSVD24,
71 SM5502_REG_RSVD25,
72 SM5502_REG_RSVD26,
73 SM5502_REG_RSVD27,
74 SM5502_REG_RSVD28,
75 SM5502_REG_RSVD29,
76 SM5502_REG_RSVD30,
77 SM5502_REG_RSVD31,
78 SM5502_REG_RSVD32,
79 SM5502_REG_RSVD33,
80 SM5502_REG_RSVD34,
81 SM5502_REG_RSVD35,
82 SM5502_REG_RSVD36,
83 SM5502_REG_RESERVED_ID3,
84
85 SM5502_REG_END,
86};
87
88/* Define SM5502 MASK/SHIFT constant */
89#define SM5502_REG_DEVICE_ID_VENDOR_SHIFT 0
90#define SM5502_REG_DEVICE_ID_VERSION_SHIFT 3
91#define SM5502_REG_DEVICE_ID_VENDOR_MASK (0x3 << SM5502_REG_DEVICE_ID_VENDOR_SHIFT)
92#define SM5502_REG_DEVICE_ID_VERSION_MASK (0x1f << SM5502_REG_DEVICE_ID_VERSION_SHIFT)
93
94#define SM5502_REG_CONTROL_MASK_INT_SHIFT 0
95#define SM5502_REG_CONTROL_WAIT_SHIFT 1
96#define SM5502_REG_CONTROL_MANUAL_SW_SHIFT 2
97#define SM5502_REG_CONTROL_RAW_DATA_SHIFT 3
98#define SM5502_REG_CONTROL_SW_OPEN_SHIFT 4
99#define SM5502_REG_CONTROL_MASK_INT_MASK (0x1 << SM5502_REG_CONTROL_MASK_INT_SHIFT)
100#define SM5502_REG_CONTROL_WAIT_MASK (0x1 << SM5502_REG_CONTROL_WAIT_SHIFT)
101#define SM5502_REG_CONTROL_MANUAL_SW_MASK (0x1 << SM5502_REG_CONTROL_MANUAL_SW_SHIFT)
102#define SM5502_REG_CONTROL_RAW_DATA_MASK (0x1 << SM5502_REG_CONTROL_RAW_DATA_SHIFT)
103#define SM5502_REG_CONTROL_SW_OPEN_MASK (0x1 << SM5502_REG_CONTROL_SW_OPEN_SHIFT)
104
105#define SM5502_REG_INTM1_ATTACH_SHIFT 0
106#define SM5502_REG_INTM1_DETACH_SHIFT 1
107#define SM5502_REG_INTM1_KP_SHIFT 2
108#define SM5502_REG_INTM1_LKP_SHIFT 3
109#define SM5502_REG_INTM1_LKR_SHIFT 4
110#define SM5502_REG_INTM1_OVP_EVENT_SHIFT 5
111#define SM5502_REG_INTM1_OCP_EVENT_SHIFT 6
112#define SM5502_REG_INTM1_OVP_OCP_DIS_SHIFT 7
113#define SM5502_REG_INTM1_ATTACH_MASK (0x1 << SM5502_REG_INTM1_ATTACH_SHIFT)
114#define SM5502_REG_INTM1_DETACH_MASK (0x1 << SM5502_REG_INTM1_DETACH_SHIFT)
115#define SM5502_REG_INTM1_KP_MASK (0x1 << SM5502_REG_INTM1_KP_SHIFT)
116#define SM5502_REG_INTM1_LKP_MASK (0x1 << SM5502_REG_INTM1_LKP_SHIFT)
117#define SM5502_REG_INTM1_LKR_MASK (0x1 << SM5502_REG_INTM1_LKR_SHIFT)
118#define SM5502_REG_INTM1_OVP_EVENT_MASK (0x1 << SM5502_REG_INTM1_OVP_EVENT_SHIFT)
119#define SM5502_REG_INTM1_OCP_EVENT_MASK (0x1 << SM5502_REG_INTM1_OCP_EVENT_SHIFT)
120#define SM5502_REG_INTM1_OVP_OCP_DIS_MASK (0x1 << SM5502_REG_INTM1_OVP_OCP_DIS_SHIFT)
121
122#define SM5502_REG_INTM2_VBUS_DET_SHIFT 0
123#define SM5502_REG_INTM2_REV_ACCE_SHIFT 1
124#define SM5502_REG_INTM2_ADC_CHG_SHIFT 2
125#define SM5502_REG_INTM2_STUCK_KEY_SHIFT 3
126#define SM5502_REG_INTM2_STUCK_KEY_RCV_SHIFT 4
127#define SM5502_REG_INTM2_MHL_SHIFT 5
128#define SM5502_REG_INTM2_VBUS_DET_MASK (0x1 << SM5502_REG_INTM2_VBUS_DET_SHIFT)
129#define SM5502_REG_INTM2_REV_ACCE_MASK (0x1 << SM5502_REG_INTM2_REV_ACCE_SHIFT)
130#define SM5502_REG_INTM2_ADC_CHG_MASK (0x1 << SM5502_REG_INTM2_ADC_CHG_SHIFT)
131#define SM5502_REG_INTM2_STUCK_KEY_MASK (0x1 << SM5502_REG_INTM2_STUCK_KEY_SHIFT)
132#define SM5502_REG_INTM2_STUCK_KEY_RCV_MASK (0x1 << SM5502_REG_INTM2_STUCK_KEY_RCV_SHIFT)
133#define SM5502_REG_INTM2_MHL_MASK (0x1 << SM5502_REG_INTM2_MHL_SHIFT)
134
135#define SM5502_REG_ADC_SHIFT 0
136#define SM5502_REG_ADC_MASK (0x1f << SM5502_REG_ADC_SHIFT)
137
138#define SM5502_REG_TIMING_SET1_KEY_PRESS_SHIFT 4
139#define SM5502_REG_TIMING_SET1_KEY_PRESS_MASK (0xf << SM5502_REG_TIMING_SET1_KEY_PRESS_SHIFT)
140#define TIMING_KEY_PRESS_100MS 0x0
141#define TIMING_KEY_PRESS_200MS 0x1
142#define TIMING_KEY_PRESS_300MS 0x2
143#define TIMING_KEY_PRESS_400MS 0x3
144#define TIMING_KEY_PRESS_500MS 0x4
145#define TIMING_KEY_PRESS_600MS 0x5
146#define TIMING_KEY_PRESS_700MS 0x6
147#define TIMING_KEY_PRESS_800MS 0x7
148#define TIMING_KEY_PRESS_900MS 0x8
149#define TIMING_KEY_PRESS_1000MS 0x9
150#define SM5502_REG_TIMING_SET1_ADC_DET_SHIFT 0
151#define SM5502_REG_TIMING_SET1_ADC_DET_MASK (0xf << SM5502_REG_TIMING_SET1_ADC_DET_SHIFT)
152#define TIMING_ADC_DET_50MS 0x0
153#define TIMING_ADC_DET_100MS 0x1
154#define TIMING_ADC_DET_150MS 0x2
155#define TIMING_ADC_DET_200MS 0x3
156#define TIMING_ADC_DET_300MS 0x4
157#define TIMING_ADC_DET_400MS 0x5
158#define TIMING_ADC_DET_500MS 0x6
159#define TIMING_ADC_DET_600MS 0x7
160#define TIMING_ADC_DET_700MS 0x8
161#define TIMING_ADC_DET_800MS 0x9
162#define TIMING_ADC_DET_900MS 0xA
163#define TIMING_ADC_DET_1000MS 0xB
164
165#define SM5502_REG_TIMING_SET2_SW_WAIT_SHIFT 4
166#define SM5502_REG_TIMING_SET2_SW_WAIT_MASK (0xf << SM5502_REG_TIMING_SET2_SW_WAIT_SHIFT)
167#define TIMING_SW_WAIT_10MS 0x0
168#define TIMING_SW_WAIT_30MS 0x1
169#define TIMING_SW_WAIT_50MS 0x2
170#define TIMING_SW_WAIT_70MS 0x3
171#define TIMING_SW_WAIT_90MS 0x4
172#define TIMING_SW_WAIT_110MS 0x5
173#define TIMING_SW_WAIT_130MS 0x6
174#define TIMING_SW_WAIT_150MS 0x7
175#define TIMING_SW_WAIT_170MS 0x8
176#define TIMING_SW_WAIT_190MS 0x9
177#define TIMING_SW_WAIT_210MS 0xA
178#define SM5502_REG_TIMING_SET2_LONG_KEY_SHIFT 0
179#define SM5502_REG_TIMING_SET2_LONG_KEY_MASK (0xf << SM5502_REG_TIMING_SET2_LONG_KEY_SHIFT)
180#define TIMING_LONG_KEY_300MS 0x0
181#define TIMING_LONG_KEY_400MS 0x1
182#define TIMING_LONG_KEY_500MS 0x2
183#define TIMING_LONG_KEY_600MS 0x3
184#define TIMING_LONG_KEY_700MS 0x4
185#define TIMING_LONG_KEY_800MS 0x5
186#define TIMING_LONG_KEY_900MS 0x6
187#define TIMING_LONG_KEY_1000MS 0x7
188#define TIMING_LONG_KEY_1100MS 0x8
189#define TIMING_LONG_KEY_1200MS 0x9
190#define TIMING_LONG_KEY_1300MS 0xA
191#define TIMING_LONG_KEY_1400MS 0xB
192#define TIMING_LONG_KEY_1500MS 0xC
193
194#define SM5502_REG_DEV_TYPE1_AUDIO_TYPE1_SHIFT 0
195#define SM5502_REG_DEV_TYPE1_AUDIO_TYPE2_SHIFT 1
196#define SM5502_REG_DEV_TYPE1_USB_SDP_SHIFT 2
197#define SM5502_REG_DEV_TYPE1_UART_SHIFT 3
198#define SM5502_REG_DEV_TYPE1_CAR_KIT_CHARGER_SHIFT 4
199#define SM5502_REG_DEV_TYPE1_USB_CHG_SHIFT 5
200#define SM5502_REG_DEV_TYPE1_DEDICATED_CHG_SHIFT 6
201#define SM5502_REG_DEV_TYPE1_USB_OTG_SHIFT 7
202#define SM5502_REG_DEV_TYPE1_AUDIO_TYPE1_MASK (0x1 << SM5502_REG_DEV_TYPE1_AUDIO_TYPE1_SHIFT)
203#define SM5502_REG_DEV_TYPE1_AUDIO_TYPE1__MASK (0x1 << SM5502_REG_DEV_TYPE1_AUDIO_TYPE2_SHIFT)
204#define SM5502_REG_DEV_TYPE1_USB_SDP_MASK (0x1 << SM5502_REG_DEV_TYPE1_USB_SDP_SHIFT)
205#define SM5502_REG_DEV_TYPE1_UART_MASK (0x1 << SM5502_REG_DEV_TYPE1_UART_SHIFT)
206#define SM5502_REG_DEV_TYPE1_CAR_KIT_CHARGER_MASK (0x1 << SM5502_REG_DEV_TYPE1_CAR_KIT_CHARGER_SHIFT)
207#define SM5502_REG_DEV_TYPE1_USB_CHG_MASK (0x1 << SM5502_REG_DEV_TYPE1_USB_CHG_SHIFT)
208#define SM5502_REG_DEV_TYPE1_DEDICATED_CHG_MASK (0x1 << SM5502_REG_DEV_TYPE1_DEDICATED_CHG_SHIFT)
209#define SM5502_REG_DEV_TYPE1_USB_OTG_MASK (0x1 << SM5502_REG_DEV_TYPE1_USB_OTG_SHIFT)
210
211#define SM5502_REG_DEV_TYPE2_JIG_USB_ON_SHIFT 0
212#define SM5502_REG_DEV_TYPE2_JIG_USB_OFF_SHIFT 1
213#define SM5502_REG_DEV_TYPE2_JIG_UART_ON_SHIFT 2
214#define SM5502_REG_DEV_TYPE2_JIG_UART_OFF_SHIFT 3
215#define SM5502_REG_DEV_TYPE2_PPD_SHIFT 4
216#define SM5502_REG_DEV_TYPE2_TTY_SHIFT 5
217#define SM5502_REG_DEV_TYPE2_AV_CABLE_SHIFT 6
218#define SM5502_REG_DEV_TYPE2_JIG_USB_ON_MASK (0x1 << SM5502_REG_DEV_TYPE2_JIG_USB_ON_SHIFT)
219#define SM5502_REG_DEV_TYPE2_JIG_USB_OFF_MASK (0x1 << SM5502_REG_DEV_TYPE2_JIG_USB_OFF_SHIFT)
220#define SM5502_REG_DEV_TYPE2_JIG_UART_ON_MASK (0x1 << SM5502_REG_DEV_TYPE2_JIG_UART_ON_SHIFT)
221#define SM5502_REG_DEV_TYPE2_JIG_UART_OFF_MASK (0x1 << SM5502_REG_DEV_TYPE2_JIG_UART_OFF_SHIFT)
222#define SM5502_REG_DEV_TYPE2_PPD_MASK (0x1 << SM5502_REG_DEV_TYPE2_PPD_SHIFT)
223#define SM5502_REG_DEV_TYPE2_TTY_MASK (0x1 << SM5502_REG_DEV_TYPE2_TTY_SHIFT)
224#define SM5502_REG_DEV_TYPE2_AV_CABLE_MASK (0x1 << SM5502_REG_DEV_TYPE2_AV_CABLE_SHIFT)
225
226/* SM5502 Interrupts */
227enum sm5502_irq {
228 /* INT1 */
229 SM5502_IRQ_INT1_ATTACH,
230 SM5502_IRQ_INT1_DETACH,
231 SM5502_IRQ_INT1_KP,
232 SM5502_IRQ_INT1_LKP,
233 SM5502_IRQ_INT1_LKR,
234 SM5502_IRQ_INT1_OVP_EVENT,
235 SM5502_IRQ_INT1_OCP_EVENT,
236 SM5502_IRQ_INT1_OVP_OCP_DIS,
237
238 /* INT2 */
239 SM5502_IRQ_INT2_VBUS_DET,
240 SM5502_IRQ_INT2_REV_ACCE,
241 SM5502_IRQ_INT2_ADC_CHG,
242 SM5502_IRQ_INT2_STUCK_KEY,
243 SM5502_IRQ_INT2_STUCK_KEY_RCV,
244 SM5502_IRQ_INT2_MHL,
245
246 SM5502_IRQ_NUM,
247};
248
249#define SM5502_IRQ_INT1_ATTACH_MASK BIT(0)
250#define SM5502_IRQ_INT1_DETACH_MASK BIT(1)
251#define SM5502_IRQ_INT1_KP_MASK BIT(2)
252#define SM5502_IRQ_INT1_LKP_MASK BIT(3)
253#define SM5502_IRQ_INT1_LKR_MASK BIT(4)
254#define SM5502_IRQ_INT1_OVP_EVENT_MASK BIT(5)
255#define SM5502_IRQ_INT1_OCP_EVENT_MASK BIT(6)
256#define SM5502_IRQ_INT1_OVP_OCP_DIS_MASK BIT(7)
257#define SM5502_IRQ_INT2_VBUS_DET_MASK BIT(0)
258#define SM5502_IRQ_INT2_REV_ACCE_MASK BIT(1)
259#define SM5502_IRQ_INT2_ADC_CHG_MASK BIT(2)
260#define SM5502_IRQ_INT2_STUCK_KEY_MASK BIT(3)
261#define SM5502_IRQ_INT2_STUCK_KEY_RCV_MASK BIT(4)
262#define SM5502_IRQ_INT2_MHL_MASK BIT(5)
263
264#endif /* __LINUX_EXTCON_SM5502_H */
generated by cgit v1.2.2 (git 2.25.0) at 2025-04-01 15:41:59 -0400