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Input: atmel_mxt_ts - make wait-after-reset period compatible with all chips
[deliverable/linux.git] / drivers / input / touchscreen / atmel_mxt_ts.c
CommitLineData
4cf51c38 1/*
7686b108 2 * Atmel maXTouch Touchscreen driver
4cf51c38
JS		 3 *
4 * Copyright (C) 2010 Samsung Electronics Co.Ltd
1e0c0c5b
DK		 5 * Copyright (C) 2012 Google, Inc.
6 *
4cf51c38
JS		 7 * Author: Joonyoung Shim <jy0922.shim@samsung.com>
8 *
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the
11 * Free Software Foundation; either version 2 of the License, or (at your
12 * option) any later version.
13 *
14 */
15
16#include <linux/module.h>
d79e7e47
BL		 17#include <linux/init.h>
18#include <linux/completion.h>
4cf51c38
JS		 19#include <linux/delay.h>
20#include <linux/firmware.h>
21#include <linux/i2c.h>
964de521 22#include <linux/i2c/atmel_mxt_ts.h>
8b86c1c2 23#include <linux/input/mt.h>
4cf51c38
JS		 24#include <linux/interrupt.h>
25#include <linux/slab.h>
26
27/* Version */
7686b108
IV		 28#define MXT_VER_20 20
29#define MXT_VER_21 21
30#define MXT_VER_22 22
4cf51c38
JS		 31
32/* Slave addresses */
7686b108
IV		 33#define MXT_APP_LOW 0x4a
34#define MXT_APP_HIGH 0x4b
35#define MXT_BOOT_LOW 0x24
36#define MXT_BOOT_HIGH 0x25
4cf51c38
JS		 37
38/* Firmware */
7686b108 39#define MXT_FW_NAME "maxtouch.fw"
4cf51c38
JS		 40
41/* Registers */
23003a84 42#define MXT_INFO 0x00
7686b108
IV		 43#define MXT_FAMILY_ID 0x00
44#define MXT_VARIANT_ID 0x01
45#define MXT_VERSION 0x02
46#define MXT_BUILD 0x03
47#define MXT_MATRIX_X_SIZE 0x04
48#define MXT_MATRIX_Y_SIZE 0x05
49#define MXT_OBJECT_NUM 0x06
50#define MXT_OBJECT_START 0x07
4cf51c38 51
7686b108 52#define MXT_OBJECT_SIZE 6
4cf51c38
JS		 53
54/* Object types */
81c88a71
IV		 55#define MXT_DEBUG_DIAGNOSTIC_T37 37
56#define MXT_GEN_MESSAGE_T5 5
57#define MXT_GEN_COMMAND_T6 6
58#define MXT_GEN_POWER_T7 7
59#define MXT_GEN_ACQUIRE_T8 8
60#define MXT_GEN_DATASOURCE_T53 53
61#define MXT_TOUCH_MULTI_T9 9
62#define MXT_TOUCH_KEYARRAY_T15 15
63#define MXT_TOUCH_PROXIMITY_T23 23
64#define MXT_TOUCH_PROXKEY_T52 52
65#define MXT_PROCI_GRIPFACE_T20 20
66#define MXT_PROCG_NOISE_T22 22
67#define MXT_PROCI_ONETOUCH_T24 24
68#define MXT_PROCI_TWOTOUCH_T27 27
69#define MXT_PROCI_GRIP_T40 40
70#define MXT_PROCI_PALM_T41 41
71#define MXT_PROCI_TOUCHSUPPRESSION_T42 42
72#define MXT_PROCI_STYLUS_T47 47
73#define MXT_PROCG_NOISESUPPRESSION_T48 48
74#define MXT_SPT_COMMSCONFIG_T18 18
75#define MXT_SPT_GPIOPWM_T19 19
76#define MXT_SPT_SELFTEST_T25 25
77#define MXT_SPT_CTECONFIG_T28 28
78#define MXT_SPT_USERDATA_T38 38
79#define MXT_SPT_DIGITIZER_T43 43
80#define MXT_SPT_MESSAGECOUNT_T44 44
81#define MXT_SPT_CTECONFIG_T46 46
82
83/* MXT_GEN_COMMAND_T6 field */
7686b108
IV		 84#define MXT_COMMAND_RESET 0
85#define MXT_COMMAND_BACKUPNV 1
86#define MXT_COMMAND_CALIBRATE 2
87#define MXT_COMMAND_REPORTALL 3
88#define MXT_COMMAND_DIAGNOSTIC 5
89
a4a2ef46
IV		 90/* Define for T6 status byte */
91#define MXT_T6_STATUS_RESET (1 << 7)
92
81c88a71 93/* MXT_GEN_POWER_T7 field */
7686b108
IV		 94#define MXT_POWER_IDLEACQINT 0
95#define MXT_POWER_ACTVACQINT 1
96#define MXT_POWER_ACTV2IDLETO 2
97
81c88a71 98/* MXT_GEN_ACQUIRE_T8 field */
7686b108
IV		 99#define MXT_ACQUIRE_CHRGTIME 0
100#define MXT_ACQUIRE_TCHDRIFT 2
101#define MXT_ACQUIRE_DRIFTST 3
102#define MXT_ACQUIRE_TCHAUTOCAL 4
103#define MXT_ACQUIRE_SYNC 5
104#define MXT_ACQUIRE_ATCHCALST 6
105#define MXT_ACQUIRE_ATCHCALSTHR 7
106
81c88a71 107/* MXT_TOUCH_MULTI_T9 field */
7686b108
IV		 108#define MXT_TOUCH_CTRL 0
109#define MXT_TOUCH_XORIGIN 1
110#define MXT_TOUCH_YORIGIN 2
111#define MXT_TOUCH_XSIZE 3
112#define MXT_TOUCH_YSIZE 4
113#define MXT_TOUCH_BLEN 6
114#define MXT_TOUCH_TCHTHR 7
115#define MXT_TOUCH_TCHDI 8
116#define MXT_TOUCH_ORIENT 9
117#define MXT_TOUCH_MOVHYSTI 11
118#define MXT_TOUCH_MOVHYSTN 12
119#define MXT_TOUCH_NUMTOUCH 14
120#define MXT_TOUCH_MRGHYST 15
121#define MXT_TOUCH_MRGTHR 16
122#define MXT_TOUCH_AMPHYST 17
123#define MXT_TOUCH_XRANGE_LSB 18
124#define MXT_TOUCH_XRANGE_MSB 19
125#define MXT_TOUCH_YRANGE_LSB 20
126#define MXT_TOUCH_YRANGE_MSB 21
127#define MXT_TOUCH_XLOCLIP 22
128#define MXT_TOUCH_XHICLIP 23
129#define MXT_TOUCH_YLOCLIP 24
130#define MXT_TOUCH_YHICLIP 25
131#define MXT_TOUCH_XEDGECTRL 26
132#define MXT_TOUCH_XEDGEDIST 27
133#define MXT_TOUCH_YEDGECTRL 28
134#define MXT_TOUCH_YEDGEDIST 29
979a72da 135#define MXT_TOUCH_JUMPLIMIT 30
7686b108 136
81c88a71 137/* MXT_PROCI_GRIPFACE_T20 field */
7686b108
IV		 138#define MXT_GRIPFACE_CTRL 0
139#define MXT_GRIPFACE_XLOGRIP 1
140#define MXT_GRIPFACE_XHIGRIP 2
141#define MXT_GRIPFACE_YLOGRIP 3
142#define MXT_GRIPFACE_YHIGRIP 4
143#define MXT_GRIPFACE_MAXTCHS 5
144#define MXT_GRIPFACE_SZTHR1 7
145#define MXT_GRIPFACE_SZTHR2 8
146#define MXT_GRIPFACE_SHPTHR1 9
147#define MXT_GRIPFACE_SHPTHR2 10
148#define MXT_GRIPFACE_SUPEXTTO 11
149
150/* MXT_PROCI_NOISE field */
151#define MXT_NOISE_CTRL 0
152#define MXT_NOISE_OUTFLEN 1
153#define MXT_NOISE_GCAFUL_LSB 3
154#define MXT_NOISE_GCAFUL_MSB 4
155#define MXT_NOISE_GCAFLL_LSB 5
156#define MXT_NOISE_GCAFLL_MSB 6
157#define MXT_NOISE_ACTVGCAFVALID 7
158#define MXT_NOISE_NOISETHR 8
159#define MXT_NOISE_FREQHOPSCALE 10
160#define MXT_NOISE_FREQ0 11
161#define MXT_NOISE_FREQ1 12
162#define MXT_NOISE_FREQ2 13
163#define MXT_NOISE_FREQ3 14
164#define MXT_NOISE_FREQ4 15
165#define MXT_NOISE_IDLEGCAFVALID 16
166
81c88a71 167/* MXT_SPT_COMMSCONFIG_T18 */
7686b108
IV		 168#define MXT_COMMS_CTRL 0
169#define MXT_COMMS_CMD 1
170
81c88a71 171/* MXT_SPT_CTECONFIG_T28 field */
7686b108
IV		 172#define MXT_CTE_CTRL 0
173#define MXT_CTE_CMD 1
174#define MXT_CTE_MODE 2
175#define MXT_CTE_IDLEGCAFDEPTH 3
176#define MXT_CTE_ACTVGCAFDEPTH 4
979a72da 177#define MXT_CTE_VOLTAGE 5
7686b108
IV		 178
179#define MXT_VOLTAGE_DEFAULT 2700000
180#define MXT_VOLTAGE_STEP 10000
181
81c88a71 182/* Define for MXT_GEN_COMMAND_T6 */
7686b108 183#define MXT_BOOT_VALUE 0xa5
a4a2ef46 184#define MXT_RESET_VALUE 0x01
7686b108 185#define MXT_BACKUP_VALUE 0x55
a4a2ef46
IV		 186
187/* Delay times */
8343bce1
LT		 188#define MXT_BACKUP_TIME 50 /* msec */
189#define MXT_RESET_TIME 200 /* msec */
a4a2ef46 190#define MXT_RESET_TIMEOUT 3000 /* msec */
a0434b75
BL		 191#define MXT_FW_RESET_TIME 3000 /* msec */
192#define MXT_FW_CHG_TIMEOUT 300 /* msec */
4cf51c38
JS		 193
194/* Command to unlock bootloader */
7686b108
IV		 195#define MXT_UNLOCK_CMD_MSB 0xaa
196#define MXT_UNLOCK_CMD_LSB 0xdc
4cf51c38
JS		 197
198/* Bootloader mode status */
7686b108
IV		 199#define MXT_WAITING_BOOTLOAD_CMD 0xc0 /* valid 7 6 bit only */
200#define MXT_WAITING_FRAME_DATA 0x80 /* valid 7 6 bit only */
201#define MXT_FRAME_CRC_CHECK 0x02
202#define MXT_FRAME_CRC_FAIL 0x03
203#define MXT_FRAME_CRC_PASS 0x04
204#define MXT_APP_CRC_FAIL 0x40 /* valid 7 8 bit only */
205#define MXT_BOOT_STATUS_MASK 0x3f
4cf51c38
JS		 206
207/* Touch status */
b2e459b8 208#define MXT_UNGRIP (1 << 0)
7686b108
IV		 209#define MXT_SUPPRESS (1 << 1)
210#define MXT_AMP (1 << 2)
211#define MXT_VECTOR (1 << 3)
212#define MXT_MOVE (1 << 4)
213#define MXT_RELEASE (1 << 5)
214#define MXT_PRESS (1 << 6)
215#define MXT_DETECT (1 << 7)
4cf51c38 216
910d8051
JS		 217/* Touch orient bits */
218#define MXT_XY_SWITCH (1 << 0)
219#define MXT_X_INVERT (1 << 1)
220#define MXT_Y_INVERT (1 << 2)
221
4cf51c38 222/* Touchscreen absolute values */
7686b108 223#define MXT_MAX_AREA 0xff
4cf51c38 224
22dfab7f
DK		 225#define MXT_PIXELS_PER_MM 20
226
7686b108 227struct mxt_info {
4cf51c38
JS		 228 u8 family_id;
229 u8 variant_id;
230 u8 version;
231 u8 build;
232 u8 matrix_xsize;
233 u8 matrix_ysize;
234 u8 object_num;
235};
236
7686b108 237struct mxt_object {
4cf51c38
JS		 238 u8 type;
239 u16 start_address;
1e0c0c5b
DK		 240 u8 size_minus_one;
241 u8 instances_minus_one;
4cf51c38 242 u8 num_report_ids;
333e5a9a 243} __packed;
4cf51c38 244
7686b108 245struct mxt_message {
4cf51c38
JS		 246 u8 reportid;
247 u8 message[7];
4cf51c38
JS		 248};
249
4cf51c38 250/* Each client has this additional data */
7686b108 251struct mxt_data {
4cf51c38
JS		 252 struct i2c_client *client;
253 struct input_dev *input_dev;
ec02ac2b 254 char phys[64]; /* device physical location */
7686b108
IV		 255 const struct mxt_platform_data *pdata;
256 struct mxt_object *object_table;
257 struct mxt_info info;
4cf51c38 258 unsigned int irq;
910d8051
JS		 259 unsigned int max_x;
260 unsigned int max_y;
d79e7e47 261 bool in_bootloader;
333e5a9a
DK		 262
263 /* Cached parameters from object table */
fdf80421 264 u8 T6_reportid;
a4a2ef46 265 u16 T6_address;
333e5a9a
DK		 266 u8 T9_reportid_min;
267 u8 T9_reportid_max;
22dfab7f 268 u8 T19_reportid;
d79e7e47
BL		 269
270 /* for fw update in bootloader */
271 struct completion bl_completion;
a4a2ef46
IV		 272
273 /* for reset handling */
274 struct completion reset_completion;
4cf51c38
JS		 275};
276
1e0c0c5b
DK		 277static size_t mxt_obj_size(const struct mxt_object *obj)
278{
279 return obj->size_minus_one + 1;
280}
281
282static size_t mxt_obj_instances(const struct mxt_object *obj)
283{
284 return obj->instances_minus_one + 1;
285}
286
7686b108 287static bool mxt_object_readable(unsigned int type)
4cf51c38
JS		 288{
289 switch (type) {
81c88a71
IV		 290 case MXT_GEN_COMMAND_T6:
291 case MXT_GEN_POWER_T7:
292 case MXT_GEN_ACQUIRE_T8:
293 case MXT_GEN_DATASOURCE_T53:
294 case MXT_TOUCH_MULTI_T9:
295 case MXT_TOUCH_KEYARRAY_T15:
296 case MXT_TOUCH_PROXIMITY_T23:
297 case MXT_TOUCH_PROXKEY_T52:
298 case MXT_PROCI_GRIPFACE_T20:
299 case MXT_PROCG_NOISE_T22:
300 case MXT_PROCI_ONETOUCH_T24:
301 case MXT_PROCI_TWOTOUCH_T27:
302 case MXT_PROCI_GRIP_T40:
303 case MXT_PROCI_PALM_T41:
304 case MXT_PROCI_TOUCHSUPPRESSION_T42:
305 case MXT_PROCI_STYLUS_T47:
306 case MXT_PROCG_NOISESUPPRESSION_T48:
307 case MXT_SPT_COMMSCONFIG_T18:
308 case MXT_SPT_GPIOPWM_T19:
309 case MXT_SPT_SELFTEST_T25:
310 case MXT_SPT_CTECONFIG_T28:
311 case MXT_SPT_USERDATA_T38:
312 case MXT_SPT_DIGITIZER_T43:
313 case MXT_SPT_CTECONFIG_T46:
4cf51c38
JS		 314 return true;
315 default:
316 return false;
317 }
318}
319
7686b108 320static bool mxt_object_writable(unsigned int type)
4cf51c38
JS		 321{
322 switch (type) {
81c88a71
IV		 323 case MXT_GEN_COMMAND_T6:
324 case MXT_GEN_POWER_T7:
325 case MXT_GEN_ACQUIRE_T8:
326 case MXT_TOUCH_MULTI_T9:
327 case MXT_TOUCH_KEYARRAY_T15:
328 case MXT_TOUCH_PROXIMITY_T23:
329 case MXT_TOUCH_PROXKEY_T52:
330 case MXT_PROCI_GRIPFACE_T20:
331 case MXT_PROCG_NOISE_T22:
332 case MXT_PROCI_ONETOUCH_T24:
333 case MXT_PROCI_TWOTOUCH_T27:
334 case MXT_PROCI_GRIP_T40:
335 case MXT_PROCI_PALM_T41:
336 case MXT_PROCI_TOUCHSUPPRESSION_T42:
337 case MXT_PROCI_STYLUS_T47:
338 case MXT_PROCG_NOISESUPPRESSION_T48:
339 case MXT_SPT_COMMSCONFIG_T18:
340 case MXT_SPT_GPIOPWM_T19:
341 case MXT_SPT_SELFTEST_T25:
342 case MXT_SPT_CTECONFIG_T28:
343 case MXT_SPT_DIGITIZER_T43:
344 case MXT_SPT_CTECONFIG_T46:
4cf51c38
JS		 345 return true;
346 default:
347 return false;
348 }
349}
350
7686b108 351static void mxt_dump_message(struct device *dev,
6ee3dbf9 352 struct mxt_message *message)
4cf51c38 353{
eb007c86
AS		 354 dev_dbg(dev, "reportid: %u\tmessage: %*ph\n",
355 message->reportid, 7, message->message);
4cf51c38
JS		 356}
357
a4a2ef46
IV		 358static int mxt_wait_for_completion(struct mxt_data *data,
359 struct completion *comp,
360 unsigned int timeout_ms)
d79e7e47
BL		 361{
362 struct device *dev = &data->client->dev;
d79e7e47
BL		 363 unsigned long timeout = msecs_to_jiffies(timeout_ms);
364 long ret;
365
366 ret = wait_for_completion_interruptible_timeout(comp, timeout);
367 if (ret < 0) {
368 return ret;
369 } else if (ret == 0) {
370 dev_err(dev, "Wait for completion timed out.\n");
371 return -ETIMEDOUT;
372 }
373 return 0;
374}
375
376static int mxt_check_bootloader(struct mxt_data *data, unsigned int state)
4cf51c38 377{
d79e7e47 378 struct i2c_client *client = data->client;
4cf51c38 379 u8 val;
d79e7e47 380 int ret;
4cf51c38
JS		 381
382recheck:
d79e7e47
BL		 383 if (state != MXT_WAITING_BOOTLOAD_CMD) {
384 /*
385 * In application update mode, the interrupt
386 * line signals state transitions. We must wait for the
387 * CHG assertion before reading the status byte.
388 * Once the status byte has been read, the line is deasserted.
389 */
a4a2ef46
IV		 390 ret = mxt_wait_for_completion(data, &data->bl_completion,
391 MXT_FW_CHG_TIMEOUT);
d79e7e47
BL		 392 if (ret) {
393 /*
394 * TODO: handle -ERESTARTSYS better by terminating
395 * fw update process before returning to userspace
396 * by writing length 0x000 to device (iff we are in
397 * WAITING_FRAME_DATA state).
398 */
399 dev_err(&client->dev, "Update wait error %d\n", ret);
400 return ret;
401 }
402 }
403
4cf51c38
JS		 404 if (i2c_master_recv(client, &val, 1) != 1) {
405 dev_err(&client->dev, "%s: i2c recv failed\n", __func__);
406 return -EIO;
407 }
408
409 switch (state) {
7686b108
IV		 410 case MXT_WAITING_BOOTLOAD_CMD:
411 case MXT_WAITING_FRAME_DATA:
412 val &= ~MXT_BOOT_STATUS_MASK;
4cf51c38 413 break;
7686b108
IV		 414 case MXT_FRAME_CRC_PASS:
415 if (val == MXT_FRAME_CRC_CHECK)
4cf51c38
JS		 416 goto recheck;
417 break;
418 default:
419 return -EINVAL;
420 }
421
422 if (val != state) {
423 dev_err(&client->dev, "Unvalid bootloader mode state\n");
424 return -EINVAL;
425 }
426
427 return 0;
428}
429
7686b108 430static int mxt_unlock_bootloader(struct i2c_client *client)
4cf51c38
JS		 431{
432 u8 buf[2];
433
7686b108
IV		 434 buf[0] = MXT_UNLOCK_CMD_LSB;
435 buf[1] = MXT_UNLOCK_CMD_MSB;
4cf51c38
JS		 436
437 if (i2c_master_send(client, buf, 2) != 2) {
438 dev_err(&client->dev, "%s: i2c send failed\n", __func__);
439 return -EIO;
440 }
441
442 return 0;
443}
444
7686b108 445static int mxt_fw_write(struct i2c_client *client,
4cf51c38
JS		 446 const u8 *data, unsigned int frame_size)
447{
448 if (i2c_master_send(client, data, frame_size) != frame_size) {
449 dev_err(&client->dev, "%s: i2c send failed\n", __func__);
450 return -EIO;
451 }
452
453 return 0;
454}
455
7686b108 456static int __mxt_read_reg(struct i2c_client *client,
4cf51c38
JS		 457 u16 reg, u16 len, void *val)
458{
459 struct i2c_msg xfer[2];
460 u8 buf[2];
771733e3 461 int ret;
4cf51c38
JS		 462
463 buf[0] = reg & 0xff;
464 buf[1] = (reg >> 8) & 0xff;
465
466 /* Write register */
467 xfer[0].addr = client->addr;
468 xfer[0].flags = 0;
469 xfer[0].len = 2;
470 xfer[0].buf = buf;
471
472 /* Read data */
473 xfer[1].addr = client->addr;
474 xfer[1].flags = I2C_M_RD;
475 xfer[1].len = len;
476 xfer[1].buf = val;
477
771733e3
DK		 478 ret = i2c_transfer(client->adapter, xfer, 2);
479 if (ret == 2) {
480 ret = 0;
481 } else {
482 if (ret >= 0)
483 ret = -EIO;
484 dev_err(&client->dev, "%s: i2c transfer failed (%d)\n",
485 __func__, ret);
4cf51c38
JS		 486 }
487
771733e3 488 return ret;
4cf51c38
JS		 489}
490
7686b108 491static int mxt_read_reg(struct i2c_client *client, u16 reg, u8 *val)
4cf51c38 492{
7686b108 493 return __mxt_read_reg(client, reg, 1, val);
4cf51c38
JS		 494}
495
9638ab7c
DK		 496static int __mxt_write_reg(struct i2c_client *client, u16 reg, u16 len,
497 const void *val)
4cf51c38 498{
9638ab7c
DK		 499 u8 *buf;
500 size_t count;
771733e3 501 int ret;
4cf51c38 502
9638ab7c
DK		 503 count = len + 2;
504 buf = kmalloc(count, GFP_KERNEL);
505 if (!buf)
506 return -ENOMEM;
4cf51c38
JS		 507
508 buf[0] = reg & 0xff;
509 buf[1] = (reg >> 8) & 0xff;
9638ab7c 510 memcpy(&buf[2], val, len);
4cf51c38 511
9638ab7c
DK		 512 ret = i2c_master_send(client, buf, count);
513 if (ret == count) {
771733e3
DK		 514 ret = 0;
515 } else {
516 if (ret >= 0)
517 ret = -EIO;
518 dev_err(&client->dev, "%s: i2c send failed (%d)\n",
519 __func__, ret);
4cf51c38
JS		 520 }
521
9638ab7c 522 kfree(buf);
771733e3 523 return ret;
4cf51c38
JS		 524}
525
9638ab7c 526static int mxt_write_reg(struct i2c_client *client, u16 reg, u8 val)
4cf51c38 527{
9638ab7c 528 return __mxt_write_reg(client, reg, 1, &val);
4cf51c38
JS		 529}
530
7686b108
IV		 531static struct mxt_object *
532mxt_get_object(struct mxt_data *data, u8 type)
4cf51c38 533{
7686b108 534 struct mxt_object *object;
4cf51c38
JS		 535 int i;
536
537 for (i = 0; i < data->info.object_num; i++) {
538 object = data->object_table + i;
539 if (object->type == type)
540 return object;
541 }
542
543 dev_err(&data->client->dev, "Invalid object type\n");
544 return NULL;
545}
546
7686b108
IV		 547static int mxt_read_message(struct mxt_data *data,
548 struct mxt_message *message)
4cf51c38 549{
7686b108 550 struct mxt_object *object;
4cf51c38
JS		 551 u16 reg;
552
81c88a71 553 object = mxt_get_object(data, MXT_GEN_MESSAGE_T5);
4cf51c38
JS		 554 if (!object)
555 return -EINVAL;
556
557 reg = object->start_address;
7686b108
IV		 558 return __mxt_read_reg(data->client, reg,
559 sizeof(struct mxt_message), message);
4cf51c38
JS		 560}
561
7686b108 562static int mxt_write_object(struct mxt_data *data,
4cf51c38
JS		 563 u8 type, u8 offset, u8 val)
564{
7686b108 565 struct mxt_object *object;
4cf51c38
JS		 566 u16 reg;
567
7686b108 568 object = mxt_get_object(data, type);
1e0c0c5b 569 if (!object || offset >= mxt_obj_size(object))
4cf51c38
JS		 570 return -EINVAL;
571
572 reg = object->start_address;
7686b108 573 return mxt_write_reg(data->client, reg + offset, val);
4cf51c38
JS		 574}
575
22dfab7f
DK		 576static void mxt_input_button(struct mxt_data *data, struct mxt_message *message)
577{
578 struct input_dev *input = data->input_dev;
fb5e4c3e 579 const struct mxt_platform_data *pdata = data->pdata;
22dfab7f
DK		 580 bool button;
581 int i;
582
583 /* Active-low switch */
fb5e4c3e
ND		 584 for (i = 0; i < pdata->t19_num_keys; i++) {
585 if (pdata->t19_keymap[i] == KEY_RESERVED)
22dfab7f 586 continue;
fb5e4c3e
ND		 587 button = !(message->message[0] & (1 << i));
588 input_report_key(input, pdata->t19_keymap[i], button);
22dfab7f
DK		 589 }
590}
591
7686b108
IV		 592static void mxt_input_touchevent(struct mxt_data *data,
593 struct mxt_message *message, int id)
4cf51c38 594{
4cf51c38
JS		 595 struct device *dev = &data->client->dev;
596 u8 status = message->message[0];
fba5bc31 597 struct input_dev *input_dev = data->input_dev;
4cf51c38
JS		 598 int x;
599 int y;
600 int area;
28ac2933 601 int pressure;
4cf51c38 602
910d8051
JS		 603 x = (message->message[1] << 4) | ((message->message[3] >> 4) & 0xf);
604 y = (message->message[2] << 4) | ((message->message[3] & 0xf));
605 if (data->max_x < 1024)
606 x = x >> 2;
607 if (data->max_y < 1024)
608 y = y >> 2;
609
4cf51c38 610 area = message->message[4];
28ac2933 611 pressure = message->message[5];
4cf51c38 612
b2e459b8
DK		 613 dev_dbg(dev,
614 "[%u] %c%c%c%c%c%c%c%c x: %5u y: %5u area: %3u amp: %3u\n",
615 id,
616 (status & MXT_DETECT) ? 'D' : '.',
617 (status & MXT_PRESS) ? 'P' : '.',
618 (status & MXT_RELEASE) ? 'R' : '.',
619 (status & MXT_MOVE) ? 'M' : '.',
620 (status & MXT_VECTOR) ? 'V' : '.',
621 (status & MXT_AMP) ? 'A' : '.',
622 (status & MXT_SUPPRESS) ? 'S' : '.',
623 (status & MXT_UNGRIP) ? 'U' : '.',
624 x, y, area, pressure);
625
fba5bc31
DK		 626 input_mt_slot(input_dev, id);
627 input_mt_report_slot_state(input_dev, MT_TOOL_FINGER,
628 status & MXT_DETECT);
629
630 if (status & MXT_DETECT) {
631 input_report_abs(input_dev, ABS_MT_POSITION_X, x);
632 input_report_abs(input_dev, ABS_MT_POSITION_Y, y);
633 input_report_abs(input_dev, ABS_MT_PRESSURE, pressure);
634 input_report_abs(input_dev, ABS_MT_TOUCH_MAJOR, area);
635 }
4cf51c38 636}
4cf51c38 637
fdf80421
DK		 638static unsigned mxt_extract_T6_csum(const u8 *csum)
639{
640 return csum[0] | (csum[1] << 8) | (csum[2] << 16);
641}
4cf51c38 642
04a79181
DK		 643static bool mxt_is_T9_message(struct mxt_data *data, struct mxt_message *msg)
644{
645 u8 id = msg->reportid;
646 return (id >= data->T9_reportid_min && id <= data->T9_reportid_max);
4cf51c38
JS		 647}
648
d79e7e47 649static irqreturn_t mxt_process_messages_until_invalid(struct mxt_data *data)
4cf51c38 650{
7686b108 651 struct mxt_message message;
fdf80421 652 const u8 *payload = &message.message[0];
4cf51c38 653 struct device *dev = &data->client->dev;
4cf51c38 654 u8 reportid;
64464ae8 655 bool update_input = false;
4cf51c38
JS		 656
657 do {
7686b108 658 if (mxt_read_message(data, &message)) {
4cf51c38 659 dev_err(dev, "Failed to read message\n");
8d4e1639 660 return IRQ_NONE;
4cf51c38
JS		 661 }
662
663 reportid = message.reportid;
664
fdf80421
DK		 665 if (reportid == data->T6_reportid) {
666 u8 status = payload[0];
667 unsigned csum = mxt_extract_T6_csum(&payload[1]);
668 dev_dbg(dev, "Status: %02x Config Checksum: %06x\n",
669 status, csum);
a4a2ef46
IV		 670
671 if (status & MXT_T6_STATUS_RESET)
672 complete(&data->reset_completion);
fdf80421
DK		 673 } else if (mxt_is_T9_message(data, &message)) {
674 int id = reportid - data->T9_reportid_min;
7686b108 675 mxt_input_touchevent(data, &message, id);
64464ae8 676 update_input = true;
22dfab7f
DK		 677 } else if (message.reportid == data->T19_reportid) {
678 mxt_input_button(data, &message);
679 update_input = true;
64464ae8 680 } else {
7686b108 681 mxt_dump_message(dev, &message);
64464ae8 682 }
4cf51c38
JS		 683 } while (reportid != 0xff);
684
64464ae8
DK		 685 if (update_input) {
686 input_mt_report_pointer_emulation(data->input_dev, false);
687 input_sync(data->input_dev);
688 }
689
4cf51c38
JS		 690 return IRQ_HANDLED;
691}
692
d79e7e47
BL		 693static irqreturn_t mxt_interrupt(int irq, void *dev_id)
694{
695 struct mxt_data *data = dev_id;
696
697 if (data->in_bootloader) {
698 /* bootloader state transition completion */
699 complete(&data->bl_completion);
700 return IRQ_HANDLED;
701 }
702
703 return mxt_process_messages_until_invalid(data);
704}
705
a4a2ef46
IV		 706static int mxt_t6_command(struct mxt_data *data, u16 cmd_offset,
707 u8 value, bool wait)
708{
709 u16 reg;
710 u8 command_register;
711 int timeout_counter = 0;
712 int ret;
713
714 reg = data->T6_address + cmd_offset;
715
716 ret = mxt_write_reg(data->client, reg, value);
717 if (ret)
718 return ret;
719
720 if (!wait)
721 return 0;
722
723 do {
724 msleep(20);
725 ret = __mxt_read_reg(data->client, reg, 1, &command_register);
726 if (ret)
727 return ret;
728 } while (command_register != 0 && timeout_counter++ <= 100);
729
730 if (timeout_counter > 100) {
731 dev_err(&data->client->dev, "Command failed!\n");
732 return -EIO;
733 }
734
735 return 0;
736}
737
738static int mxt_soft_reset(struct mxt_data *data)
739{
740 struct device *dev = &data->client->dev;
741 int ret = 0;
742
743 dev_info(dev, "Resetting chip\n");
744
745 reinit_completion(&data->reset_completion);
746
747 ret = mxt_t6_command(data, MXT_COMMAND_RESET, MXT_RESET_VALUE, false);
748 if (ret)
749 return ret;
750
751 ret = mxt_wait_for_completion(data, &data->reset_completion,
752 MXT_RESET_TIMEOUT);
753 if (ret)
754 return ret;
755
756 return 0;
757}
758
7686b108 759static int mxt_check_reg_init(struct mxt_data *data)
4cf51c38 760{
71749f5c 761 const struct mxt_platform_data *pdata = data->pdata;
7686b108 762 struct mxt_object *object;
4cf51c38
JS		 763 struct device *dev = &data->client->dev;
764 int index = 0;
cf94bc09
DK		 765 int i, size;
766 int ret;
4cf51c38 767
71749f5c
IV		 768 if (!pdata->config) {
769 dev_dbg(dev, "No cfg data defined, skipping reg init\n");
770 return 0;
4cf51c38
JS		 771 }
772
773 for (i = 0; i < data->info.object_num; i++) {
774 object = data->object_table + i;
775
7686b108 776 if (!mxt_object_writable(object->type))
4cf51c38
JS		 777 continue;
778
1e0c0c5b 779 size = mxt_obj_size(object) * mxt_obj_instances(object);
cf94bc09
DK		 780 if (index + size > pdata->config_length) {
781 dev_err(dev, "Not enough config data!\n");
782 return -EINVAL;
71749f5c 783 }
cf94bc09
DK		 784
785 ret = __mxt_write_reg(data->client, object->start_address,
786 size, &pdata->config[index]);
787 if (ret)
788 return ret;
789 index += size;
4cf51c38
JS		 790 }
791
792 return 0;
793}
794
7686b108 795static int mxt_make_highchg(struct mxt_data *data)
4cf51c38
JS		 796{
797 struct device *dev = &data->client->dev;
26cdb1ae 798 struct mxt_message message;
4cf51c38
JS		 799 int count = 10;
800 int error;
4cf51c38
JS		 801
802 /* Read dummy message to make high CHG pin */
803 do {
26cdb1ae 804 error = mxt_read_message(data, &message);
4cf51c38
JS		 805 if (error)
806 return error;
26cdb1ae 807 } while (message.reportid != 0xff && --count);
4cf51c38
JS		 808
809 if (!count) {
810 dev_err(dev, "CHG pin isn't cleared\n");
811 return -EBUSY;
812 }
813
814 return 0;
815}
816
7686b108 817static int mxt_get_info(struct mxt_data *data)
4cf51c38
JS		 818{
819 struct i2c_client *client = data->client;
7686b108 820 struct mxt_info *info = &data->info;
4cf51c38 821 int error;
4cf51c38 822
23003a84
DK		 823 /* Read 7-byte info block starting at address 0 */
824 error = __mxt_read_reg(client, MXT_INFO, sizeof(*info), info);
4cf51c38
JS		 825 if (error)
826 return error;
4cf51c38
JS		 827
828 return 0;
829}
830
7686b108 831static int mxt_get_object_table(struct mxt_data *data)
4cf51c38 832{
333e5a9a
DK		 833 struct i2c_client *client = data->client;
834 size_t table_size;
4cf51c38
JS		 835 int error;
836 int i;
333e5a9a
DK		 837 u8 reportid;
838
839 table_size = data->info.object_num * sizeof(struct mxt_object);
840 error = __mxt_read_reg(client, MXT_OBJECT_START, table_size,
841 data->object_table);
842 if (error)
843 return error;
4cf51c38 844
333e5a9a
DK		 845 /* Valid Report IDs start counting from 1 */
846 reportid = 1;
4cf51c38 847 for (i = 0; i < data->info.object_num; i++) {
7686b108 848 struct mxt_object *object = data->object_table + i;
333e5a9a 849 u8 min_id, max_id;
4cf51c38 850
333e5a9a 851 le16_to_cpus(&object->start_address);
4cf51c38
JS		 852
853 if (object->num_report_ids) {
333e5a9a 854 min_id = reportid;
4cf51c38 855 reportid += object->num_report_ids *
1e0c0c5b 856 mxt_obj_instances(object);
333e5a9a
DK		 857 max_id = reportid - 1;
858 } else {
859 min_id = 0;
860 max_id = 0;
861 }
862
863 dev_dbg(&data->client->dev,
1e0c0c5b
DK		 864 "Type %2d Start %3d Size %3zd Instances %2zd ReportIDs %3u : %3u\n",
865 object->type, object->start_address,
866 mxt_obj_size(object), mxt_obj_instances(object),
867 min_id, max_id);
333e5a9a
DK		 868
869 switch (object->type) {
fdf80421
DK		 870 case MXT_GEN_COMMAND_T6:
871 data->T6_reportid = min_id;
a4a2ef46 872 data->T6_address = object->start_address;
fdf80421 873 break;
333e5a9a
DK		 874 case MXT_TOUCH_MULTI_T9:
875 data->T9_reportid_min = min_id;
876 data->T9_reportid_max = max_id;
877 break;
22dfab7f
DK		 878 case MXT_SPT_GPIOPWM_T19:
879 data->T19_reportid = min_id;
880 break;
4cf51c38
JS		 881 }
882 }
883
884 return 0;
885}
886
7d4fa100
DK		 887static void mxt_free_object_table(struct mxt_data *data)
888{
889 kfree(data->object_table);
890 data->object_table = NULL;
fdf80421 891 data->T6_reportid = 0;
333e5a9a
DK		 892 data->T9_reportid_min = 0;
893 data->T9_reportid_max = 0;
22dfab7f 894 data->T19_reportid = 0;
7d4fa100
DK		 895}
896
7686b108 897static int mxt_initialize(struct mxt_data *data)
4cf51c38
JS		 898{
899 struct i2c_client *client = data->client;
7686b108 900 struct mxt_info *info = &data->info;
4cf51c38
JS		 901 int error;
902 u8 val;
903
7686b108 904 error = mxt_get_info(data);
4cf51c38
JS		 905 if (error)
906 return error;
907
908 data->object_table = kcalloc(info->object_num,
7686b108 909 sizeof(struct mxt_object),
4cf51c38
JS		 910 GFP_KERNEL);
911 if (!data->object_table) {
912 dev_err(&client->dev, "Failed to allocate memory\n");
913 return -ENOMEM;
914 }
915
916 /* Get object table information */
7686b108 917 error = mxt_get_object_table(data);
4cf51c38 918 if (error)
7d4fa100 919 goto err_free_object_table;
4cf51c38
JS		 920
921 /* Check register init values */
7686b108 922 error = mxt_check_reg_init(data);
4cf51c38 923 if (error)
7d4fa100 924 goto err_free_object_table;
4cf51c38 925
a4a2ef46
IV		 926 error = mxt_t6_command(data, MXT_COMMAND_BACKUPNV,
927 MXT_BACKUP_VALUE, false);
928 if (!error)
929 mxt_soft_reset(data);
4cf51c38
JS		 930
931 /* Update matrix size at info struct */
7686b108 932 error = mxt_read_reg(client, MXT_MATRIX_X_SIZE, &val);
4cf51c38 933 if (error)
7d4fa100 934 goto err_free_object_table;
4cf51c38
JS		 935 info->matrix_xsize = val;
936
7686b108 937 error = mxt_read_reg(client, MXT_MATRIX_Y_SIZE, &val);
4cf51c38 938 if (error)
7d4fa100 939 goto err_free_object_table;
4cf51c38
JS		 940 info->matrix_ysize = val;
941
942 dev_info(&client->dev,
e0e0269f
DK		 943 "Family ID: %u Variant ID: %u Major.Minor.Build: %u.%u.%02X\n",
944 info->family_id, info->variant_id, info->version >> 4,
945 info->version & 0xf, info->build);
4cf51c38
JS		 946
947 dev_info(&client->dev,
e0e0269f 948 "Matrix X Size: %u Matrix Y Size: %u Object Num: %u\n",
4cf51c38
JS		 949 info->matrix_xsize, info->matrix_ysize,
950 info->object_num);
951
952 return 0;
7d4fa100
DK		 953
954err_free_object_table:
955 mxt_free_object_table(data);
956 return error;
4cf51c38
JS		 957}
958
910d8051
JS		 959static void mxt_calc_resolution(struct mxt_data *data)
960{
961 unsigned int max_x = data->pdata->x_size - 1;
962 unsigned int max_y = data->pdata->y_size - 1;
963
964 if (data->pdata->orient & MXT_XY_SWITCH) {
965 data->max_x = max_y;
966 data->max_y = max_x;
967 } else {
968 data->max_x = max_x;
969 data->max_y = max_y;
970 }
971}
972
b19fc9ec
DK		 973/* Firmware Version is returned as Major.Minor.Build */
974static ssize_t mxt_fw_version_show(struct device *dev,
975 struct device_attribute *attr, char *buf)
976{
977 struct mxt_data *data = dev_get_drvdata(dev);
978 struct mxt_info *info = &data->info;
979 return scnprintf(buf, PAGE_SIZE, "%u.%u.%02X\n",
980 info->version >> 4, info->version & 0xf, info->build);
981}
982
983/* Hardware Version is returned as FamilyID.VariantID */
984static ssize_t mxt_hw_version_show(struct device *dev,
985 struct device_attribute *attr, char *buf)
986{
987 struct mxt_data *data = dev_get_drvdata(dev);
988 struct mxt_info *info = &data->info;
989 return scnprintf(buf, PAGE_SIZE, "%u.%u\n",
990 info->family_id, info->variant_id);
991}
992
794eb67e
DK		 993static ssize_t mxt_show_instance(char *buf, int count,
994 struct mxt_object *object, int instance,
995 const u8 *val)
996{
997 int i;
998
1e0c0c5b 999 if (mxt_obj_instances(object) > 1)
794eb67e
DK		 1000 count += scnprintf(buf + count, PAGE_SIZE - count,
1001 "Instance %u\n", instance);
1002
1e0c0c5b 1003 for (i = 0; i < mxt_obj_size(object); i++)
794eb67e
DK		 1004 count += scnprintf(buf + count, PAGE_SIZE - count,
1005 "\t[%2u]: %02x (%d)\n", i, val[i], val[i]);
1006 count += scnprintf(buf + count, PAGE_SIZE - count, "\n");
1007
1008 return count;
1009}
1010
7686b108 1011static ssize_t mxt_object_show(struct device *dev,
4cf51c38
JS		 1012 struct device_attribute *attr, char *buf)
1013{
7686b108
IV		 1014 struct mxt_data *data = dev_get_drvdata(dev);
1015 struct mxt_object *object;
4cf51c38
JS		 1016 int count = 0;
1017 int i, j;
1018 int error;
43a91d51 1019 u8 *obuf;
4cf51c38 1020
43a91d51
DK		 1021 /* Pre-allocate buffer large enough to hold max sized object. */
1022 obuf = kmalloc(256, GFP_KERNEL);
1023 if (!obuf)
1024 return -ENOMEM;
4cf51c38 1025
43a91d51 1026 error = 0;
4cf51c38
JS		 1027 for (i = 0; i < data->info.object_num; i++) {
1028 object = data->object_table + i;
1029
91630955 1030 if (!mxt_object_readable(object->type))
4cf51c38 1031 continue;
4cf51c38 1032
91630955
DK		 1033 count += scnprintf(buf + count, PAGE_SIZE - count,
1034 "T%u:\n", object->type);
4cf51c38 1035
1e0c0c5b
DK		 1036 for (j = 0; j < mxt_obj_instances(object); j++) {
1037 u16 size = mxt_obj_size(object);
794eb67e 1038 u16 addr = object->start_address + j * size;
43a91d51 1039
794eb67e 1040 error = __mxt_read_reg(data->client, addr, size, obuf);
4cf51c38 1041 if (error)
794eb67e 1042 goto done;
4cf51c38 1043
794eb67e 1044 count = mxt_show_instance(buf, count, object, j, obuf);
4cf51c38 1045 }
4cf51c38
JS		 1046 }
1047
794eb67e 1048done:
43a91d51
DK		 1049 kfree(obuf);
1050 return error ?: count;
4cf51c38
JS		 1051}
1052
7686b108 1053static int mxt_load_fw(struct device *dev, const char *fn)
4cf51c38 1054{
7686b108 1055 struct mxt_data *data = dev_get_drvdata(dev);
4cf51c38
JS		 1056 struct i2c_client *client = data->client;
1057 const struct firmware *fw = NULL;
1058 unsigned int frame_size;
1059 unsigned int pos = 0;
1060 int ret;
1061
1062 ret = request_firmware(&fw, fn, dev);
1063 if (ret) {
1064 dev_err(dev, "Unable to open firmware %s\n", fn);
1065 return ret;
1066 }
1067
1068 /* Change to the bootloader mode */
d79e7e47
BL		 1069 data->in_bootloader = true;
1070
a4a2ef46
IV		 1071 ret = mxt_t6_command(data, MXT_COMMAND_RESET, MXT_BOOT_VALUE, false);
1072 if (ret)
1073 goto release_firmware;
1074
7686b108 1075 msleep(MXT_RESET_TIME);
4cf51c38
JS		 1076
1077 /* Change to slave address of bootloader */
7686b108
IV		 1078 if (client->addr == MXT_APP_LOW)
1079 client->addr = MXT_BOOT_LOW;
4cf51c38 1080 else
7686b108 1081 client->addr = MXT_BOOT_HIGH;
4cf51c38 1082
d79e7e47
BL		 1083 reinit_completion(&data->bl_completion);
1084
1085 ret = mxt_check_bootloader(data, MXT_WAITING_BOOTLOAD_CMD);
4cf51c38 1086 if (ret)
d79e7e47 1087 goto disable_irq;
4cf51c38
JS		 1088
1089 /* Unlock bootloader */
7686b108 1090 mxt_unlock_bootloader(client);
4cf51c38
JS		 1091
1092 while (pos < fw->size) {
d79e7e47 1093 ret = mxt_check_bootloader(data, MXT_WAITING_FRAME_DATA);
4cf51c38 1094 if (ret)
d79e7e47 1095 goto disable_irq;
4cf51c38
JS		 1096
1097 frame_size = ((*(fw->data + pos) << 8) | *(fw->data + pos + 1));
1098
1099 /* We should add 2 at frame size as the the firmware data is not
1100 * included the CRC bytes.
1101 */
1102 frame_size += 2;
1103
1104 /* Write one frame to device */
7686b108 1105 mxt_fw_write(client, fw->data + pos, frame_size);
4cf51c38 1106
d79e7e47 1107 ret = mxt_check_bootloader(data, MXT_FRAME_CRC_PASS);
4cf51c38 1108 if (ret)
d79e7e47 1109 goto disable_irq;
4cf51c38
JS		 1110
1111 pos += frame_size;
1112
1113 dev_dbg(dev, "Updated %d bytes / %zd bytes\n", pos, fw->size);
1114 }
1115
a0434b75 1116 /* Wait for flash. */
a4a2ef46
IV		 1117 ret = mxt_wait_for_completion(data, &data->bl_completion,
1118 MXT_FW_RESET_TIME);
a0434b75
BL		 1119 if (ret)
1120 goto disable_irq;
1121
1122 /*
1123 * Wait for device to reset. Some bootloader versions do not assert
1124 * the CHG line after bootloading has finished, so ignore potential
1125 * errors.
1126 */
a4a2ef46 1127 mxt_wait_for_completion(data, &data->bl_completion, MXT_FW_RESET_TIME);
a0434b75 1128
d79e7e47
BL		 1129 data->in_bootloader = false;
1130
1131disable_irq:
1132 disable_irq(data->irq);
a4a2ef46 1133release_firmware:
4cf51c38
JS		 1134 release_firmware(fw);
1135
1136 /* Change to slave address of application */
7686b108
IV		 1137 if (client->addr == MXT_BOOT_LOW)
1138 client->addr = MXT_APP_LOW;
4cf51c38 1139 else
7686b108 1140 client->addr = MXT_APP_HIGH;
4cf51c38
JS		 1141
1142 return ret;
1143}
1144
7686b108 1145static ssize_t mxt_update_fw_store(struct device *dev,
4cf51c38
JS		 1146 struct device_attribute *attr,
1147 const char *buf, size_t count)
1148{
7686b108 1149 struct mxt_data *data = dev_get_drvdata(dev);
4cf51c38
JS		 1150 int error;
1151
7686b108 1152 error = mxt_load_fw(dev, MXT_FW_NAME);
4cf51c38
JS		 1153 if (error) {
1154 dev_err(dev, "The firmware update failed(%d)\n", error);
1155 count = error;
1156 } else {
1157 dev_dbg(dev, "The firmware update succeeded\n");
7d4fa100 1158 mxt_free_object_table(data);
4cf51c38 1159
7686b108 1160 mxt_initialize(data);
4cf51c38 1161
d79e7e47 1162 enable_irq(data->irq);
4cf51c38 1163
d79e7e47
BL		 1164 error = mxt_make_highchg(data);
1165 if (error)
1166 return error;
1167 }
08960a07 1168
4cf51c38
JS		 1169 return count;
1170}
1171
b19fc9ec
DK		 1172static DEVICE_ATTR(fw_version, S_IRUGO, mxt_fw_version_show, NULL);
1173static DEVICE_ATTR(hw_version, S_IRUGO, mxt_hw_version_show, NULL);
71b3e938
DK		 1174static DEVICE_ATTR(object, S_IRUGO, mxt_object_show, NULL);
1175static DEVICE_ATTR(update_fw, S_IWUSR, NULL, mxt_update_fw_store);
4cf51c38 1176
7686b108 1177static struct attribute *mxt_attrs[] = {
b19fc9ec
DK		 1178 &dev_attr_fw_version.attr,
1179 &dev_attr_hw_version.attr,
4cf51c38
JS		 1180 &dev_attr_object.attr,
1181 &dev_attr_update_fw.attr,
1182 NULL
1183};
1184
7686b108
IV		 1185static const struct attribute_group mxt_attr_group = {
1186 .attrs = mxt_attrs,
4cf51c38
JS		 1187};
1188
7686b108 1189static void mxt_start(struct mxt_data *data)
4cf51c38
JS		 1190{
1191 /* Touch enable */
7686b108 1192 mxt_write_object(data,
81c88a71 1193 MXT_TOUCH_MULTI_T9, MXT_TOUCH_CTRL, 0x83);
4cf51c38
JS		 1194}
1195
7686b108 1196static void mxt_stop(struct mxt_data *data)
4cf51c38
JS		 1197{
1198 /* Touch disable */
7686b108 1199 mxt_write_object(data,
81c88a71 1200 MXT_TOUCH_MULTI_T9, MXT_TOUCH_CTRL, 0);
4cf51c38
JS		 1201}
1202
7686b108 1203static int mxt_input_open(struct input_dev *dev)
4cf51c38 1204{
7686b108 1205 struct mxt_data *data = input_get_drvdata(dev);
4cf51c38 1206
7686b108 1207 mxt_start(data);
4cf51c38
JS		 1208
1209 return 0;
1210}
1211
7686b108 1212static void mxt_input_close(struct input_dev *dev)
4cf51c38 1213{
7686b108 1214 struct mxt_data *data = input_get_drvdata(dev);
4cf51c38 1215
7686b108 1216 mxt_stop(data);
4cf51c38
JS		 1217}
1218
5298cc4c 1219static int mxt_probe(struct i2c_client *client,
4cf51c38
JS		 1220 const struct i2c_device_id *id)
1221{
c838cb3d 1222 const struct mxt_platform_data *pdata = dev_get_platdata(&client->dev);
7686b108 1223 struct mxt_data *data;
4cf51c38
JS		 1224 struct input_dev *input_dev;
1225 int error;
cb159115 1226 unsigned int num_mt_slots;
fb5e4c3e
ND		 1227 unsigned int mt_flags = 0;
1228 int i;
4cf51c38 1229
919ed895 1230 if (!pdata)
4cf51c38
JS		 1231 return -EINVAL;
1232
7686b108 1233 data = kzalloc(sizeof(struct mxt_data), GFP_KERNEL);
4cf51c38
JS		 1234 input_dev = input_allocate_device();
1235 if (!data || !input_dev) {
1236 dev_err(&client->dev, "Failed to allocate memory\n");
1237 error = -ENOMEM;
1238 goto err_free_mem;
1239 }
1240
fb5e4c3e 1241 input_dev->name = "Atmel maXTouch Touchscreen";
ec02ac2b
DK		 1242 snprintf(data->phys, sizeof(data->phys), "i2c-%u-%04x/input0",
1243 client->adapter->nr, client->addr);
22dfab7f 1244
ec02ac2b
DK		 1245 input_dev->phys = data->phys;
1246
4cf51c38
JS		 1247 input_dev->id.bustype = BUS_I2C;
1248 input_dev->dev.parent = &client->dev;
7686b108
IV		 1249 input_dev->open = mxt_input_open;
1250 input_dev->close = mxt_input_close;
4cf51c38 1251
910d8051
JS		 1252 data->client = client;
1253 data->input_dev = input_dev;
1254 data->pdata = pdata;
1255 data->irq = client->irq;
1256
d79e7e47 1257 init_completion(&data->bl_completion);
a4a2ef46 1258 init_completion(&data->reset_completion);
d79e7e47 1259
910d8051
JS		 1260 mxt_calc_resolution(data);
1261
cb159115
DK		 1262 error = mxt_initialize(data);
1263 if (error)
1264 goto err_free_mem;
1265
4cf51c38
JS		 1266 __set_bit(EV_ABS, input_dev->evbit);
1267 __set_bit(EV_KEY, input_dev->evbit);
1268 __set_bit(BTN_TOUCH, input_dev->keybit);
1269
fb5e4c3e 1270 if (pdata->t19_num_keys) {
22dfab7f
DK		 1271 __set_bit(INPUT_PROP_BUTTONPAD, input_dev->propbit);
1272
fb5e4c3e
ND		 1273 for (i = 0; i < pdata->t19_num_keys; i++)
1274 if (pdata->t19_keymap[i] != KEY_RESERVED)
1275 input_set_capability(input_dev, EV_KEY,
1276 pdata->t19_keymap[i]);
22dfab7f 1277
fb5e4c3e 1278 mt_flags |= INPUT_MT_POINTER;
22dfab7f
DK		 1279
1280 input_abs_set_res(input_dev, ABS_X, MXT_PIXELS_PER_MM);
1281 input_abs_set_res(input_dev, ABS_Y, MXT_PIXELS_PER_MM);
1282 input_abs_set_res(input_dev, ABS_MT_POSITION_X,
1283 MXT_PIXELS_PER_MM);
1284 input_abs_set_res(input_dev, ABS_MT_POSITION_Y,
1285 MXT_PIXELS_PER_MM);
fb5e4c3e
ND		 1286
1287 input_dev->name = "Atmel maXTouch Touchpad";
22dfab7f
DK		 1288 }
1289
4cf51c38
JS		 1290 /* For single touch */
1291 input_set_abs_params(input_dev, ABS_X,
910d8051 1292 0, data->max_x, 0, 0);
4cf51c38 1293 input_set_abs_params(input_dev, ABS_Y,
910d8051 1294 0, data->max_y, 0, 0);
28ac2933
YS		 1295 input_set_abs_params(input_dev, ABS_PRESSURE,
1296 0, 255, 0, 0);
4cf51c38
JS		 1297
1298 /* For multi touch */
cb159115 1299 num_mt_slots = data->T9_reportid_max - data->T9_reportid_min + 1;
fb5e4c3e 1300 error = input_mt_init_slots(input_dev, num_mt_slots, mt_flags);
e1e1658d 1301 if (error)
cb159115 1302 goto err_free_object;
4cf51c38 1303 input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR,
7686b108 1304 0, MXT_MAX_AREA, 0, 0);
4cf51c38 1305 input_set_abs_params(input_dev, ABS_MT_POSITION_X,
910d8051 1306 0, data->max_x, 0, 0);
4cf51c38 1307 input_set_abs_params(input_dev, ABS_MT_POSITION_Y,
910d8051 1308 0, data->max_y, 0, 0);
28ac2933
YS		 1309 input_set_abs_params(input_dev, ABS_MT_PRESSURE,
1310 0, 255, 0, 0);
4cf51c38
JS		 1311
1312 input_set_drvdata(input_dev, data);
4cf51c38
JS		 1313 i2c_set_clientdata(client, data);
1314
7686b108 1315 error = request_threaded_irq(client->irq, NULL, mxt_interrupt,
9b7e31bb 1316 pdata->irqflags | IRQF_ONESHOT,
f053ea8d 1317 client->name, data);
4cf51c38
JS		 1318 if (error) {
1319 dev_err(&client->dev, "Failed to register interrupt\n");
1320 goto err_free_object;
1321 }
1322
08960a07
IV		 1323 error = mxt_make_highchg(data);
1324 if (error)
1325 goto err_free_irq;
1326
4cf51c38
JS		 1327 error = input_register_device(input_dev);
1328 if (error)
1329 goto err_free_irq;
1330
7686b108 1331 error = sysfs_create_group(&client->dev.kobj, &mxt_attr_group);
4cf51c38
JS		 1332 if (error)
1333 goto err_unregister_device;
1334
1335 return 0;
1336
1337err_unregister_device:
1338 input_unregister_device(input_dev);
1339 input_dev = NULL;
1340err_free_irq:
1341 free_irq(client->irq, data);
1342err_free_object:
1343 kfree(data->object_table);
1344err_free_mem:
1345 input_free_device(input_dev);
1346 kfree(data);
1347 return error;
1348}
1349
e2619cf7 1350static int mxt_remove(struct i2c_client *client)
4cf51c38 1351{
7686b108 1352 struct mxt_data *data = i2c_get_clientdata(client);
4cf51c38 1353
7686b108 1354 sysfs_remove_group(&client->dev.kobj, &mxt_attr_group);
4cf51c38
JS		 1355 free_irq(data->irq, data);
1356 input_unregister_device(data->input_dev);
1357 kfree(data->object_table);
1358 kfree(data);
1359
1360 return 0;
1361}
1362
3a73c816 1363#ifdef CONFIG_PM_SLEEP
7686b108 1364static int mxt_suspend(struct device *dev)
4cf51c38 1365{
8b5fce06 1366 struct i2c_client *client = to_i2c_client(dev);
7686b108 1367 struct mxt_data *data = i2c_get_clientdata(client);
4cf51c38
JS		 1368 struct input_dev *input_dev = data->input_dev;
1369
1370 mutex_lock(&input_dev->mutex);
1371
1372 if (input_dev->users)
7686b108 1373 mxt_stop(data);
4cf51c38
JS		 1374
1375 mutex_unlock(&input_dev->mutex);
1376
1377 return 0;
1378}
1379
7686b108 1380static int mxt_resume(struct device *dev)
4cf51c38 1381{
8b5fce06 1382 struct i2c_client *client = to_i2c_client(dev);
7686b108 1383 struct mxt_data *data = i2c_get_clientdata(client);
4cf51c38
JS		 1384 struct input_dev *input_dev = data->input_dev;
1385
a4a2ef46 1386 mxt_soft_reset(data);
4cf51c38
JS		 1387
1388 mutex_lock(&input_dev->mutex);
1389
1390 if (input_dev->users)
7686b108 1391 mxt_start(data);
4cf51c38
JS		 1392
1393 mutex_unlock(&input_dev->mutex);
1394
1395 return 0;
1396}
4cf51c38
JS		 1397#endif
1398
3a73c816
DK		 1399static SIMPLE_DEV_PM_OPS(mxt_pm_ops, mxt_suspend, mxt_resume);
1400
7686b108 1401static const struct i2c_device_id mxt_id[] = {
4cf51c38 1402 { "qt602240_ts", 0 },
7686b108 1403 { "atmel_mxt_ts", 0 },
22dfab7f 1404 { "atmel_mxt_tp", 0 },
46ee2a05 1405 { "mXT224", 0 },
4cf51c38
JS		 1406 { }
1407};
7686b108 1408MODULE_DEVICE_TABLE(i2c, mxt_id);
4cf51c38 1409
7686b108 1410static struct i2c_driver mxt_driver = {
4cf51c38 1411 .driver = {
7686b108 1412 .name = "atmel_mxt_ts",
4cf51c38 1413 .owner = THIS_MODULE,
7686b108 1414 .pm = &mxt_pm_ops,
4cf51c38 1415 },
7686b108 1416 .probe = mxt_probe,
1cb0aa88 1417 .remove = mxt_remove,
7686b108 1418 .id_table = mxt_id,
4cf51c38
JS		 1419};
1420
1b92c1cf 1421module_i2c_driver(mxt_driver);
4cf51c38
JS		 1422
1423/* Module information */
1424MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
7686b108 1425MODULE_DESCRIPTION("Atmel maXTouch Touchscreen driver");
4cf51c38 1426MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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