Commit | Line | Data |
---|---|---|
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 | 31 | |
4cf51c38 | 32 | /* Firmware */ |
7686b108 | 33 | #define MXT_FW_NAME "maxtouch.fw" |
4cf51c38 JS |
34 | |
35 | /* Registers */ | |
23003a84 | 36 | #define MXT_INFO 0x00 |
7686b108 IV |
37 | #define MXT_FAMILY_ID 0x00 |
38 | #define MXT_VARIANT_ID 0x01 | |
39 | #define MXT_VERSION 0x02 | |
40 | #define MXT_BUILD 0x03 | |
41 | #define MXT_MATRIX_X_SIZE 0x04 | |
42 | #define MXT_MATRIX_Y_SIZE 0x05 | |
43 | #define MXT_OBJECT_NUM 0x06 | |
44 | #define MXT_OBJECT_START 0x07 | |
4cf51c38 | 45 | |
7686b108 | 46 | #define MXT_OBJECT_SIZE 6 |
4cf51c38 JS |
47 | |
48 | /* Object types */ | |
81c88a71 IV |
49 | #define MXT_DEBUG_DIAGNOSTIC_T37 37 |
50 | #define MXT_GEN_MESSAGE_T5 5 | |
51 | #define MXT_GEN_COMMAND_T6 6 | |
52 | #define MXT_GEN_POWER_T7 7 | |
53 | #define MXT_GEN_ACQUIRE_T8 8 | |
54 | #define MXT_GEN_DATASOURCE_T53 53 | |
55 | #define MXT_TOUCH_MULTI_T9 9 | |
56 | #define MXT_TOUCH_KEYARRAY_T15 15 | |
57 | #define MXT_TOUCH_PROXIMITY_T23 23 | |
58 | #define MXT_TOUCH_PROXKEY_T52 52 | |
59 | #define MXT_PROCI_GRIPFACE_T20 20 | |
60 | #define MXT_PROCG_NOISE_T22 22 | |
61 | #define MXT_PROCI_ONETOUCH_T24 24 | |
62 | #define MXT_PROCI_TWOTOUCH_T27 27 | |
63 | #define MXT_PROCI_GRIP_T40 40 | |
64 | #define MXT_PROCI_PALM_T41 41 | |
65 | #define MXT_PROCI_TOUCHSUPPRESSION_T42 42 | |
66 | #define MXT_PROCI_STYLUS_T47 47 | |
67 | #define MXT_PROCG_NOISESUPPRESSION_T48 48 | |
68 | #define MXT_SPT_COMMSCONFIG_T18 18 | |
69 | #define MXT_SPT_GPIOPWM_T19 19 | |
70 | #define MXT_SPT_SELFTEST_T25 25 | |
71 | #define MXT_SPT_CTECONFIG_T28 28 | |
72 | #define MXT_SPT_USERDATA_T38 38 | |
73 | #define MXT_SPT_DIGITIZER_T43 43 | |
74 | #define MXT_SPT_MESSAGECOUNT_T44 44 | |
75 | #define MXT_SPT_CTECONFIG_T46 46 | |
76 | ||
77 | /* MXT_GEN_COMMAND_T6 field */ | |
7686b108 IV |
78 | #define MXT_COMMAND_RESET 0 |
79 | #define MXT_COMMAND_BACKUPNV 1 | |
80 | #define MXT_COMMAND_CALIBRATE 2 | |
81 | #define MXT_COMMAND_REPORTALL 3 | |
82 | #define MXT_COMMAND_DIAGNOSTIC 5 | |
83 | ||
a4a2ef46 IV |
84 | /* Define for T6 status byte */ |
85 | #define MXT_T6_STATUS_RESET (1 << 7) | |
86 | ||
81c88a71 | 87 | /* MXT_GEN_POWER_T7 field */ |
7686b108 IV |
88 | #define MXT_POWER_IDLEACQINT 0 |
89 | #define MXT_POWER_ACTVACQINT 1 | |
90 | #define MXT_POWER_ACTV2IDLETO 2 | |
91 | ||
81c88a71 | 92 | /* MXT_GEN_ACQUIRE_T8 field */ |
7686b108 IV |
93 | #define MXT_ACQUIRE_CHRGTIME 0 |
94 | #define MXT_ACQUIRE_TCHDRIFT 2 | |
95 | #define MXT_ACQUIRE_DRIFTST 3 | |
96 | #define MXT_ACQUIRE_TCHAUTOCAL 4 | |
97 | #define MXT_ACQUIRE_SYNC 5 | |
98 | #define MXT_ACQUIRE_ATCHCALST 6 | |
99 | #define MXT_ACQUIRE_ATCHCALSTHR 7 | |
100 | ||
81c88a71 | 101 | /* MXT_TOUCH_MULTI_T9 field */ |
7686b108 IV |
102 | #define MXT_TOUCH_CTRL 0 |
103 | #define MXT_TOUCH_XORIGIN 1 | |
104 | #define MXT_TOUCH_YORIGIN 2 | |
105 | #define MXT_TOUCH_XSIZE 3 | |
106 | #define MXT_TOUCH_YSIZE 4 | |
107 | #define MXT_TOUCH_BLEN 6 | |
108 | #define MXT_TOUCH_TCHTHR 7 | |
109 | #define MXT_TOUCH_TCHDI 8 | |
110 | #define MXT_TOUCH_ORIENT 9 | |
111 | #define MXT_TOUCH_MOVHYSTI 11 | |
112 | #define MXT_TOUCH_MOVHYSTN 12 | |
113 | #define MXT_TOUCH_NUMTOUCH 14 | |
114 | #define MXT_TOUCH_MRGHYST 15 | |
115 | #define MXT_TOUCH_MRGTHR 16 | |
116 | #define MXT_TOUCH_AMPHYST 17 | |
117 | #define MXT_TOUCH_XRANGE_LSB 18 | |
118 | #define MXT_TOUCH_XRANGE_MSB 19 | |
119 | #define MXT_TOUCH_YRANGE_LSB 20 | |
120 | #define MXT_TOUCH_YRANGE_MSB 21 | |
121 | #define MXT_TOUCH_XLOCLIP 22 | |
122 | #define MXT_TOUCH_XHICLIP 23 | |
123 | #define MXT_TOUCH_YLOCLIP 24 | |
124 | #define MXT_TOUCH_YHICLIP 25 | |
125 | #define MXT_TOUCH_XEDGECTRL 26 | |
126 | #define MXT_TOUCH_XEDGEDIST 27 | |
127 | #define MXT_TOUCH_YEDGECTRL 28 | |
128 | #define MXT_TOUCH_YEDGEDIST 29 | |
979a72da | 129 | #define MXT_TOUCH_JUMPLIMIT 30 |
7686b108 | 130 | |
81c88a71 | 131 | /* MXT_PROCI_GRIPFACE_T20 field */ |
7686b108 IV |
132 | #define MXT_GRIPFACE_CTRL 0 |
133 | #define MXT_GRIPFACE_XLOGRIP 1 | |
134 | #define MXT_GRIPFACE_XHIGRIP 2 | |
135 | #define MXT_GRIPFACE_YLOGRIP 3 | |
136 | #define MXT_GRIPFACE_YHIGRIP 4 | |
137 | #define MXT_GRIPFACE_MAXTCHS 5 | |
138 | #define MXT_GRIPFACE_SZTHR1 7 | |
139 | #define MXT_GRIPFACE_SZTHR2 8 | |
140 | #define MXT_GRIPFACE_SHPTHR1 9 | |
141 | #define MXT_GRIPFACE_SHPTHR2 10 | |
142 | #define MXT_GRIPFACE_SUPEXTTO 11 | |
143 | ||
144 | /* MXT_PROCI_NOISE field */ | |
145 | #define MXT_NOISE_CTRL 0 | |
146 | #define MXT_NOISE_OUTFLEN 1 | |
147 | #define MXT_NOISE_GCAFUL_LSB 3 | |
148 | #define MXT_NOISE_GCAFUL_MSB 4 | |
149 | #define MXT_NOISE_GCAFLL_LSB 5 | |
150 | #define MXT_NOISE_GCAFLL_MSB 6 | |
151 | #define MXT_NOISE_ACTVGCAFVALID 7 | |
152 | #define MXT_NOISE_NOISETHR 8 | |
153 | #define MXT_NOISE_FREQHOPSCALE 10 | |
154 | #define MXT_NOISE_FREQ0 11 | |
155 | #define MXT_NOISE_FREQ1 12 | |
156 | #define MXT_NOISE_FREQ2 13 | |
157 | #define MXT_NOISE_FREQ3 14 | |
158 | #define MXT_NOISE_FREQ4 15 | |
159 | #define MXT_NOISE_IDLEGCAFVALID 16 | |
160 | ||
81c88a71 | 161 | /* MXT_SPT_COMMSCONFIG_T18 */ |
7686b108 IV |
162 | #define MXT_COMMS_CTRL 0 |
163 | #define MXT_COMMS_CMD 1 | |
164 | ||
81c88a71 | 165 | /* MXT_SPT_CTECONFIG_T28 field */ |
7686b108 IV |
166 | #define MXT_CTE_CTRL 0 |
167 | #define MXT_CTE_CMD 1 | |
168 | #define MXT_CTE_MODE 2 | |
169 | #define MXT_CTE_IDLEGCAFDEPTH 3 | |
170 | #define MXT_CTE_ACTVGCAFDEPTH 4 | |
979a72da | 171 | #define MXT_CTE_VOLTAGE 5 |
7686b108 IV |
172 | |
173 | #define MXT_VOLTAGE_DEFAULT 2700000 | |
174 | #define MXT_VOLTAGE_STEP 10000 | |
175 | ||
81c88a71 | 176 | /* Define for MXT_GEN_COMMAND_T6 */ |
7686b108 | 177 | #define MXT_BOOT_VALUE 0xa5 |
a4a2ef46 | 178 | #define MXT_RESET_VALUE 0x01 |
7686b108 | 179 | #define MXT_BACKUP_VALUE 0x55 |
a4a2ef46 IV |
180 | |
181 | /* Delay times */ | |
8343bce1 LT |
182 | #define MXT_BACKUP_TIME 50 /* msec */ |
183 | #define MXT_RESET_TIME 200 /* msec */ | |
a4a2ef46 | 184 | #define MXT_RESET_TIMEOUT 3000 /* msec */ |
c3f78043 | 185 | #define MXT_CRC_TIMEOUT 1000 /* msec */ |
a0434b75 BL |
186 | #define MXT_FW_RESET_TIME 3000 /* msec */ |
187 | #define MXT_FW_CHG_TIMEOUT 300 /* msec */ | |
4cf51c38 JS |
188 | |
189 | /* Command to unlock bootloader */ | |
7686b108 IV |
190 | #define MXT_UNLOCK_CMD_MSB 0xaa |
191 | #define MXT_UNLOCK_CMD_LSB 0xdc | |
4cf51c38 JS |
192 | |
193 | /* Bootloader mode status */ | |
7686b108 IV |
194 | #define MXT_WAITING_BOOTLOAD_CMD 0xc0 /* valid 7 6 bit only */ |
195 | #define MXT_WAITING_FRAME_DATA 0x80 /* valid 7 6 bit only */ | |
196 | #define MXT_FRAME_CRC_CHECK 0x02 | |
197 | #define MXT_FRAME_CRC_FAIL 0x03 | |
198 | #define MXT_FRAME_CRC_PASS 0x04 | |
199 | #define MXT_APP_CRC_FAIL 0x40 /* valid 7 8 bit only */ | |
200 | #define MXT_BOOT_STATUS_MASK 0x3f | |
4cf51c38 JS |
201 | |
202 | /* Touch status */ | |
b2e459b8 | 203 | #define MXT_UNGRIP (1 << 0) |
7686b108 IV |
204 | #define MXT_SUPPRESS (1 << 1) |
205 | #define MXT_AMP (1 << 2) | |
206 | #define MXT_VECTOR (1 << 3) | |
207 | #define MXT_MOVE (1 << 4) | |
208 | #define MXT_RELEASE (1 << 5) | |
209 | #define MXT_PRESS (1 << 6) | |
210 | #define MXT_DETECT (1 << 7) | |
4cf51c38 | 211 | |
910d8051 JS |
212 | /* Touch orient bits */ |
213 | #define MXT_XY_SWITCH (1 << 0) | |
214 | #define MXT_X_INVERT (1 << 1) | |
215 | #define MXT_Y_INVERT (1 << 2) | |
216 | ||
4cf51c38 | 217 | /* Touchscreen absolute values */ |
7686b108 | 218 | #define MXT_MAX_AREA 0xff |
4cf51c38 | 219 | |
22dfab7f DK |
220 | #define MXT_PIXELS_PER_MM 20 |
221 | ||
7686b108 | 222 | struct mxt_info { |
4cf51c38 JS |
223 | u8 family_id; |
224 | u8 variant_id; | |
225 | u8 version; | |
226 | u8 build; | |
227 | u8 matrix_xsize; | |
228 | u8 matrix_ysize; | |
229 | u8 object_num; | |
230 | }; | |
231 | ||
7686b108 | 232 | struct mxt_object { |
4cf51c38 JS |
233 | u8 type; |
234 | u16 start_address; | |
1e0c0c5b DK |
235 | u8 size_minus_one; |
236 | u8 instances_minus_one; | |
4cf51c38 | 237 | u8 num_report_ids; |
333e5a9a | 238 | } __packed; |
4cf51c38 | 239 | |
7686b108 | 240 | struct mxt_message { |
4cf51c38 JS |
241 | u8 reportid; |
242 | u8 message[7]; | |
4cf51c38 JS |
243 | }; |
244 | ||
4cf51c38 | 245 | /* Each client has this additional data */ |
7686b108 | 246 | struct mxt_data { |
4cf51c38 JS |
247 | struct i2c_client *client; |
248 | struct input_dev *input_dev; | |
ec02ac2b | 249 | char phys[64]; /* device physical location */ |
7686b108 IV |
250 | const struct mxt_platform_data *pdata; |
251 | struct mxt_object *object_table; | |
252 | struct mxt_info info; | |
4cf51c38 | 253 | unsigned int irq; |
910d8051 JS |
254 | unsigned int max_x; |
255 | unsigned int max_y; | |
d79e7e47 | 256 | bool in_bootloader; |
c3f78043 | 257 | u32 config_crc; |
f28a842d | 258 | u8 bootloader_addr; |
333e5a9a DK |
259 | |
260 | /* Cached parameters from object table */ | |
fdf80421 | 261 | u8 T6_reportid; |
a4a2ef46 | 262 | u16 T6_address; |
333e5a9a DK |
263 | u8 T9_reportid_min; |
264 | u8 T9_reportid_max; | |
22dfab7f | 265 | u8 T19_reportid; |
d79e7e47 BL |
266 | |
267 | /* for fw update in bootloader */ | |
268 | struct completion bl_completion; | |
a4a2ef46 IV |
269 | |
270 | /* for reset handling */ | |
271 | struct completion reset_completion; | |
c3f78043 ND |
272 | |
273 | /* for config update handling */ | |
274 | struct completion crc_completion; | |
4cf51c38 JS |
275 | }; |
276 | ||
1e0c0c5b DK |
277 | static size_t mxt_obj_size(const struct mxt_object *obj) |
278 | { | |
279 | return obj->size_minus_one + 1; | |
280 | } | |
281 | ||
282 | static size_t mxt_obj_instances(const struct mxt_object *obj) | |
283 | { | |
284 | return obj->instances_minus_one + 1; | |
285 | } | |
286 | ||
7686b108 | 287 | static 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 | 320 | static 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 | 351 | static 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 |
358 | static 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 | ||
f28a842d ND |
376 | static int mxt_bootloader_read(struct mxt_data *data, |
377 | u8 *val, unsigned int count) | |
378 | { | |
379 | int ret; | |
380 | struct i2c_msg msg; | |
381 | ||
382 | msg.addr = data->bootloader_addr; | |
383 | msg.flags = data->client->flags & I2C_M_TEN; | |
384 | msg.flags |= I2C_M_RD; | |
385 | msg.len = count; | |
386 | msg.buf = val; | |
387 | ||
388 | ret = i2c_transfer(data->client->adapter, &msg, 1); | |
389 | ||
390 | if (ret == 1) { | |
391 | ret = 0; | |
392 | } else { | |
393 | ret = ret < 0 ? ret : -EIO; | |
394 | dev_err(&data->client->dev, "%s: i2c recv failed (%d)\n", | |
395 | __func__, ret); | |
396 | } | |
397 | ||
398 | return ret; | |
399 | } | |
400 | ||
401 | static int mxt_bootloader_write(struct mxt_data *data, | |
402 | const u8 * const val, unsigned int count) | |
403 | { | |
404 | int ret; | |
405 | struct i2c_msg msg; | |
406 | ||
407 | msg.addr = data->bootloader_addr; | |
408 | msg.flags = data->client->flags & I2C_M_TEN; | |
409 | msg.len = count; | |
410 | msg.buf = (u8 *)val; | |
411 | ||
412 | ret = i2c_transfer(data->client->adapter, &msg, 1); | |
413 | if (ret == 1) { | |
414 | ret = 0; | |
415 | } else { | |
416 | ret = ret < 0 ? ret : -EIO; | |
417 | dev_err(&data->client->dev, "%s: i2c send failed (%d)\n", | |
418 | __func__, ret); | |
419 | } | |
420 | ||
421 | return ret; | |
422 | } | |
423 | ||
424 | static int mxt_lookup_bootloader_address(struct mxt_data *data) | |
425 | { | |
426 | u8 appmode = data->client->addr; | |
427 | u8 bootloader; | |
428 | ||
429 | switch (appmode) { | |
430 | case 0x4a: | |
431 | case 0x4b: | |
432 | case 0x4c: | |
433 | case 0x4d: | |
434 | case 0x5a: | |
435 | case 0x5b: | |
436 | bootloader = appmode - 0x26; | |
437 | break; | |
438 | default: | |
439 | dev_err(&data->client->dev, | |
440 | "Appmode i2c address 0x%02x not found\n", | |
441 | appmode); | |
442 | return -EINVAL; | |
443 | } | |
444 | ||
445 | data->bootloader_addr = bootloader; | |
446 | return 0; | |
447 | } | |
448 | ||
d79e7e47 | 449 | static int mxt_check_bootloader(struct mxt_data *data, unsigned int state) |
4cf51c38 | 450 | { |
f28a842d | 451 | struct device *dev = &data->client->dev; |
4cf51c38 | 452 | u8 val; |
d79e7e47 | 453 | int ret; |
4cf51c38 JS |
454 | |
455 | recheck: | |
d79e7e47 BL |
456 | if (state != MXT_WAITING_BOOTLOAD_CMD) { |
457 | /* | |
458 | * In application update mode, the interrupt | |
459 | * line signals state transitions. We must wait for the | |
460 | * CHG assertion before reading the status byte. | |
461 | * Once the status byte has been read, the line is deasserted. | |
462 | */ | |
a4a2ef46 IV |
463 | ret = mxt_wait_for_completion(data, &data->bl_completion, |
464 | MXT_FW_CHG_TIMEOUT); | |
d79e7e47 BL |
465 | if (ret) { |
466 | /* | |
467 | * TODO: handle -ERESTARTSYS better by terminating | |
468 | * fw update process before returning to userspace | |
469 | * by writing length 0x000 to device (iff we are in | |
470 | * WAITING_FRAME_DATA state). | |
471 | */ | |
f28a842d | 472 | dev_err(dev, "Update wait error %d\n", ret); |
d79e7e47 BL |
473 | return ret; |
474 | } | |
475 | } | |
476 | ||
f28a842d ND |
477 | ret = mxt_bootloader_read(data, &val, 1); |
478 | if (ret) | |
479 | return ret; | |
4cf51c38 JS |
480 | |
481 | switch (state) { | |
7686b108 IV |
482 | case MXT_WAITING_BOOTLOAD_CMD: |
483 | case MXT_WAITING_FRAME_DATA: | |
484 | val &= ~MXT_BOOT_STATUS_MASK; | |
4cf51c38 | 485 | break; |
7686b108 IV |
486 | case MXT_FRAME_CRC_PASS: |
487 | if (val == MXT_FRAME_CRC_CHECK) | |
4cf51c38 JS |
488 | goto recheck; |
489 | break; | |
490 | default: | |
491 | return -EINVAL; | |
492 | } | |
493 | ||
494 | if (val != state) { | |
f28a842d | 495 | dev_err(dev, "Invalid bootloader state %02X != %02X\n", |
7bed6805 | 496 | val, state); |
4cf51c38 JS |
497 | return -EINVAL; |
498 | } | |
499 | ||
500 | return 0; | |
501 | } | |
502 | ||
f28a842d | 503 | static int mxt_unlock_bootloader(struct mxt_data *data) |
4cf51c38 | 504 | { |
f28a842d | 505 | int ret; |
4cf51c38 JS |
506 | u8 buf[2]; |
507 | ||
7686b108 IV |
508 | buf[0] = MXT_UNLOCK_CMD_LSB; |
509 | buf[1] = MXT_UNLOCK_CMD_MSB; | |
4cf51c38 | 510 | |
f28a842d ND |
511 | ret = mxt_bootloader_write(data, buf, 2); |
512 | if (ret) | |
513 | return ret; | |
4cf51c38 JS |
514 | |
515 | return 0; | |
516 | } | |
517 | ||
7686b108 | 518 | static int __mxt_read_reg(struct i2c_client *client, |
4cf51c38 JS |
519 | u16 reg, u16 len, void *val) |
520 | { | |
521 | struct i2c_msg xfer[2]; | |
522 | u8 buf[2]; | |
771733e3 | 523 | int ret; |
4cf51c38 JS |
524 | |
525 | buf[0] = reg & 0xff; | |
526 | buf[1] = (reg >> 8) & 0xff; | |
527 | ||
528 | /* Write register */ | |
529 | xfer[0].addr = client->addr; | |
530 | xfer[0].flags = 0; | |
531 | xfer[0].len = 2; | |
532 | xfer[0].buf = buf; | |
533 | ||
534 | /* Read data */ | |
535 | xfer[1].addr = client->addr; | |
536 | xfer[1].flags = I2C_M_RD; | |
537 | xfer[1].len = len; | |
538 | xfer[1].buf = val; | |
539 | ||
771733e3 DK |
540 | ret = i2c_transfer(client->adapter, xfer, 2); |
541 | if (ret == 2) { | |
542 | ret = 0; | |
543 | } else { | |
544 | if (ret >= 0) | |
545 | ret = -EIO; | |
546 | dev_err(&client->dev, "%s: i2c transfer failed (%d)\n", | |
547 | __func__, ret); | |
4cf51c38 JS |
548 | } |
549 | ||
771733e3 | 550 | return ret; |
4cf51c38 JS |
551 | } |
552 | ||
7686b108 | 553 | static int mxt_read_reg(struct i2c_client *client, u16 reg, u8 *val) |
4cf51c38 | 554 | { |
7686b108 | 555 | return __mxt_read_reg(client, reg, 1, val); |
4cf51c38 JS |
556 | } |
557 | ||
9638ab7c DK |
558 | static int __mxt_write_reg(struct i2c_client *client, u16 reg, u16 len, |
559 | const void *val) | |
4cf51c38 | 560 | { |
9638ab7c DK |
561 | u8 *buf; |
562 | size_t count; | |
771733e3 | 563 | int ret; |
4cf51c38 | 564 | |
9638ab7c DK |
565 | count = len + 2; |
566 | buf = kmalloc(count, GFP_KERNEL); | |
567 | if (!buf) | |
568 | return -ENOMEM; | |
4cf51c38 JS |
569 | |
570 | buf[0] = reg & 0xff; | |
571 | buf[1] = (reg >> 8) & 0xff; | |
9638ab7c | 572 | memcpy(&buf[2], val, len); |
4cf51c38 | 573 | |
9638ab7c DK |
574 | ret = i2c_master_send(client, buf, count); |
575 | if (ret == count) { | |
771733e3 DK |
576 | ret = 0; |
577 | } else { | |
578 | if (ret >= 0) | |
579 | ret = -EIO; | |
580 | dev_err(&client->dev, "%s: i2c send failed (%d)\n", | |
581 | __func__, ret); | |
4cf51c38 JS |
582 | } |
583 | ||
9638ab7c | 584 | kfree(buf); |
771733e3 | 585 | return ret; |
4cf51c38 JS |
586 | } |
587 | ||
9638ab7c | 588 | static int mxt_write_reg(struct i2c_client *client, u16 reg, u8 val) |
4cf51c38 | 589 | { |
9638ab7c | 590 | return __mxt_write_reg(client, reg, 1, &val); |
4cf51c38 JS |
591 | } |
592 | ||
7686b108 IV |
593 | static struct mxt_object * |
594 | mxt_get_object(struct mxt_data *data, u8 type) | |
4cf51c38 | 595 | { |
7686b108 | 596 | struct mxt_object *object; |
4cf51c38 JS |
597 | int i; |
598 | ||
599 | for (i = 0; i < data->info.object_num; i++) { | |
600 | object = data->object_table + i; | |
601 | if (object->type == type) | |
602 | return object; | |
603 | } | |
604 | ||
7bed6805 | 605 | dev_err(&data->client->dev, "Invalid object type T%u\n", type); |
4cf51c38 JS |
606 | return NULL; |
607 | } | |
608 | ||
7686b108 IV |
609 | static int mxt_read_message(struct mxt_data *data, |
610 | struct mxt_message *message) | |
4cf51c38 | 611 | { |
7686b108 | 612 | struct mxt_object *object; |
4cf51c38 JS |
613 | u16 reg; |
614 | ||
81c88a71 | 615 | object = mxt_get_object(data, MXT_GEN_MESSAGE_T5); |
4cf51c38 JS |
616 | if (!object) |
617 | return -EINVAL; | |
618 | ||
619 | reg = object->start_address; | |
7686b108 IV |
620 | return __mxt_read_reg(data->client, reg, |
621 | sizeof(struct mxt_message), message); | |
4cf51c38 JS |
622 | } |
623 | ||
7686b108 | 624 | static int mxt_write_object(struct mxt_data *data, |
4cf51c38 JS |
625 | u8 type, u8 offset, u8 val) |
626 | { | |
7686b108 | 627 | struct mxt_object *object; |
4cf51c38 JS |
628 | u16 reg; |
629 | ||
7686b108 | 630 | object = mxt_get_object(data, type); |
1e0c0c5b | 631 | if (!object || offset >= mxt_obj_size(object)) |
4cf51c38 JS |
632 | return -EINVAL; |
633 | ||
634 | reg = object->start_address; | |
7686b108 | 635 | return mxt_write_reg(data->client, reg + offset, val); |
4cf51c38 JS |
636 | } |
637 | ||
22dfab7f DK |
638 | static void mxt_input_button(struct mxt_data *data, struct mxt_message *message) |
639 | { | |
640 | struct input_dev *input = data->input_dev; | |
fb5e4c3e | 641 | const struct mxt_platform_data *pdata = data->pdata; |
22dfab7f DK |
642 | bool button; |
643 | int i; | |
644 | ||
645 | /* Active-low switch */ | |
fb5e4c3e ND |
646 | for (i = 0; i < pdata->t19_num_keys; i++) { |
647 | if (pdata->t19_keymap[i] == KEY_RESERVED) | |
22dfab7f | 648 | continue; |
fb5e4c3e ND |
649 | button = !(message->message[0] & (1 << i)); |
650 | input_report_key(input, pdata->t19_keymap[i], button); | |
22dfab7f DK |
651 | } |
652 | } | |
653 | ||
7686b108 IV |
654 | static void mxt_input_touchevent(struct mxt_data *data, |
655 | struct mxt_message *message, int id) | |
4cf51c38 | 656 | { |
4cf51c38 JS |
657 | struct device *dev = &data->client->dev; |
658 | u8 status = message->message[0]; | |
fba5bc31 | 659 | struct input_dev *input_dev = data->input_dev; |
4cf51c38 JS |
660 | int x; |
661 | int y; | |
662 | int area; | |
28ac2933 | 663 | int pressure; |
4cf51c38 | 664 | |
910d8051 JS |
665 | x = (message->message[1] << 4) | ((message->message[3] >> 4) & 0xf); |
666 | y = (message->message[2] << 4) | ((message->message[3] & 0xf)); | |
667 | if (data->max_x < 1024) | |
668 | x = x >> 2; | |
669 | if (data->max_y < 1024) | |
670 | y = y >> 2; | |
671 | ||
4cf51c38 | 672 | area = message->message[4]; |
28ac2933 | 673 | pressure = message->message[5]; |
4cf51c38 | 674 | |
b2e459b8 DK |
675 | dev_dbg(dev, |
676 | "[%u] %c%c%c%c%c%c%c%c x: %5u y: %5u area: %3u amp: %3u\n", | |
677 | id, | |
678 | (status & MXT_DETECT) ? 'D' : '.', | |
679 | (status & MXT_PRESS) ? 'P' : '.', | |
680 | (status & MXT_RELEASE) ? 'R' : '.', | |
681 | (status & MXT_MOVE) ? 'M' : '.', | |
682 | (status & MXT_VECTOR) ? 'V' : '.', | |
683 | (status & MXT_AMP) ? 'A' : '.', | |
684 | (status & MXT_SUPPRESS) ? 'S' : '.', | |
685 | (status & MXT_UNGRIP) ? 'U' : '.', | |
686 | x, y, area, pressure); | |
687 | ||
fba5bc31 DK |
688 | input_mt_slot(input_dev, id); |
689 | input_mt_report_slot_state(input_dev, MT_TOOL_FINGER, | |
690 | status & MXT_DETECT); | |
691 | ||
692 | if (status & MXT_DETECT) { | |
693 | input_report_abs(input_dev, ABS_MT_POSITION_X, x); | |
694 | input_report_abs(input_dev, ABS_MT_POSITION_Y, y); | |
695 | input_report_abs(input_dev, ABS_MT_PRESSURE, pressure); | |
696 | input_report_abs(input_dev, ABS_MT_TOUCH_MAJOR, area); | |
697 | } | |
4cf51c38 | 698 | } |
4cf51c38 | 699 | |
c3f78043 | 700 | static u16 mxt_extract_T6_csum(const u8 *csum) |
fdf80421 DK |
701 | { |
702 | return csum[0] | (csum[1] << 8) | (csum[2] << 16); | |
703 | } | |
4cf51c38 | 704 | |
04a79181 DK |
705 | static bool mxt_is_T9_message(struct mxt_data *data, struct mxt_message *msg) |
706 | { | |
707 | u8 id = msg->reportid; | |
708 | return (id >= data->T9_reportid_min && id <= data->T9_reportid_max); | |
4cf51c38 JS |
709 | } |
710 | ||
d79e7e47 | 711 | static irqreturn_t mxt_process_messages_until_invalid(struct mxt_data *data) |
4cf51c38 | 712 | { |
7686b108 | 713 | struct mxt_message message; |
fdf80421 | 714 | const u8 *payload = &message.message[0]; |
4cf51c38 | 715 | struct device *dev = &data->client->dev; |
4cf51c38 | 716 | u8 reportid; |
64464ae8 | 717 | bool update_input = false; |
c3f78043 | 718 | u32 crc; |
4cf51c38 JS |
719 | |
720 | do { | |
7686b108 | 721 | if (mxt_read_message(data, &message)) { |
4cf51c38 | 722 | dev_err(dev, "Failed to read message\n"); |
8d4e1639 | 723 | return IRQ_NONE; |
4cf51c38 JS |
724 | } |
725 | ||
726 | reportid = message.reportid; | |
727 | ||
fdf80421 DK |
728 | if (reportid == data->T6_reportid) { |
729 | u8 status = payload[0]; | |
c3f78043 ND |
730 | |
731 | crc = mxt_extract_T6_csum(&payload[1]); | |
732 | if (crc != data->config_crc) { | |
733 | data->config_crc = crc; | |
734 | complete(&data->crc_completion); | |
735 | } | |
736 | ||
fdf80421 | 737 | dev_dbg(dev, "Status: %02x Config Checksum: %06x\n", |
c3f78043 | 738 | status, data->config_crc); |
a4a2ef46 IV |
739 | |
740 | if (status & MXT_T6_STATUS_RESET) | |
741 | complete(&data->reset_completion); | |
fdf80421 DK |
742 | } else if (mxt_is_T9_message(data, &message)) { |
743 | int id = reportid - data->T9_reportid_min; | |
7686b108 | 744 | mxt_input_touchevent(data, &message, id); |
64464ae8 | 745 | update_input = true; |
22dfab7f DK |
746 | } else if (message.reportid == data->T19_reportid) { |
747 | mxt_input_button(data, &message); | |
748 | update_input = true; | |
64464ae8 | 749 | } else { |
7686b108 | 750 | mxt_dump_message(dev, &message); |
64464ae8 | 751 | } |
4cf51c38 JS |
752 | } while (reportid != 0xff); |
753 | ||
64464ae8 DK |
754 | if (update_input) { |
755 | input_mt_report_pointer_emulation(data->input_dev, false); | |
756 | input_sync(data->input_dev); | |
757 | } | |
758 | ||
4cf51c38 JS |
759 | return IRQ_HANDLED; |
760 | } | |
761 | ||
d79e7e47 BL |
762 | static irqreturn_t mxt_interrupt(int irq, void *dev_id) |
763 | { | |
764 | struct mxt_data *data = dev_id; | |
765 | ||
766 | if (data->in_bootloader) { | |
767 | /* bootloader state transition completion */ | |
768 | complete(&data->bl_completion); | |
769 | return IRQ_HANDLED; | |
770 | } | |
771 | ||
772 | return mxt_process_messages_until_invalid(data); | |
773 | } | |
774 | ||
a4a2ef46 IV |
775 | static int mxt_t6_command(struct mxt_data *data, u16 cmd_offset, |
776 | u8 value, bool wait) | |
777 | { | |
778 | u16 reg; | |
779 | u8 command_register; | |
780 | int timeout_counter = 0; | |
781 | int ret; | |
782 | ||
783 | reg = data->T6_address + cmd_offset; | |
784 | ||
785 | ret = mxt_write_reg(data->client, reg, value); | |
786 | if (ret) | |
787 | return ret; | |
788 | ||
789 | if (!wait) | |
790 | return 0; | |
791 | ||
792 | do { | |
793 | msleep(20); | |
794 | ret = __mxt_read_reg(data->client, reg, 1, &command_register); | |
795 | if (ret) | |
796 | return ret; | |
797 | } while (command_register != 0 && timeout_counter++ <= 100); | |
798 | ||
799 | if (timeout_counter > 100) { | |
800 | dev_err(&data->client->dev, "Command failed!\n"); | |
801 | return -EIO; | |
802 | } | |
803 | ||
804 | return 0; | |
805 | } | |
806 | ||
807 | static int mxt_soft_reset(struct mxt_data *data) | |
808 | { | |
809 | struct device *dev = &data->client->dev; | |
810 | int ret = 0; | |
811 | ||
812 | dev_info(dev, "Resetting chip\n"); | |
813 | ||
814 | reinit_completion(&data->reset_completion); | |
815 | ||
816 | ret = mxt_t6_command(data, MXT_COMMAND_RESET, MXT_RESET_VALUE, false); | |
817 | if (ret) | |
818 | return ret; | |
819 | ||
820 | ret = mxt_wait_for_completion(data, &data->reset_completion, | |
821 | MXT_RESET_TIMEOUT); | |
822 | if (ret) | |
823 | return ret; | |
824 | ||
825 | return 0; | |
826 | } | |
827 | ||
c3f78043 ND |
828 | static void mxt_update_crc(struct mxt_data *data, u8 cmd, u8 value) |
829 | { | |
830 | /* | |
831 | * On failure, CRC is set to 0 and config will always be | |
832 | * downloaded. | |
833 | */ | |
834 | data->config_crc = 0; | |
835 | reinit_completion(&data->crc_completion); | |
836 | ||
837 | mxt_t6_command(data, cmd, value, true); | |
838 | ||
839 | /* | |
840 | * Wait for crc message. On failure, CRC is set to 0 and config will | |
841 | * always be downloaded. | |
842 | */ | |
843 | mxt_wait_for_completion(data, &data->crc_completion, MXT_CRC_TIMEOUT); | |
844 | } | |
845 | ||
7686b108 | 846 | static int mxt_check_reg_init(struct mxt_data *data) |
4cf51c38 | 847 | { |
71749f5c | 848 | const struct mxt_platform_data *pdata = data->pdata; |
7686b108 | 849 | struct mxt_object *object; |
4cf51c38 JS |
850 | struct device *dev = &data->client->dev; |
851 | int index = 0; | |
cf94bc09 DK |
852 | int i, size; |
853 | int ret; | |
4cf51c38 | 854 | |
71749f5c IV |
855 | if (!pdata->config) { |
856 | dev_dbg(dev, "No cfg data defined, skipping reg init\n"); | |
857 | return 0; | |
4cf51c38 JS |
858 | } |
859 | ||
c3f78043 ND |
860 | mxt_update_crc(data, MXT_COMMAND_REPORTALL, 1); |
861 | ||
862 | if (data->config_crc == pdata->config_crc) { | |
863 | dev_info(dev, "Config CRC 0x%06X: OK\n", data->config_crc); | |
864 | return 0; | |
865 | } | |
866 | ||
867 | dev_info(dev, "Config CRC 0x%06X: does not match 0x%06X\n", | |
868 | data->config_crc, pdata->config_crc); | |
869 | ||
4cf51c38 JS |
870 | for (i = 0; i < data->info.object_num; i++) { |
871 | object = data->object_table + i; | |
872 | ||
7686b108 | 873 | if (!mxt_object_writable(object->type)) |
4cf51c38 JS |
874 | continue; |
875 | ||
1e0c0c5b | 876 | size = mxt_obj_size(object) * mxt_obj_instances(object); |
cf94bc09 DK |
877 | if (index + size > pdata->config_length) { |
878 | dev_err(dev, "Not enough config data!\n"); | |
879 | return -EINVAL; | |
71749f5c | 880 | } |
cf94bc09 DK |
881 | |
882 | ret = __mxt_write_reg(data->client, object->start_address, | |
883 | size, &pdata->config[index]); | |
884 | if (ret) | |
885 | return ret; | |
886 | index += size; | |
4cf51c38 JS |
887 | } |
888 | ||
c3f78043 ND |
889 | mxt_update_crc(data, MXT_COMMAND_BACKUPNV, MXT_BACKUP_VALUE); |
890 | ||
891 | ret = mxt_soft_reset(data); | |
892 | if (ret) | |
893 | return ret; | |
894 | ||
895 | dev_info(dev, "Config successfully updated\n"); | |
896 | ||
4cf51c38 JS |
897 | return 0; |
898 | } | |
899 | ||
7686b108 | 900 | static int mxt_make_highchg(struct mxt_data *data) |
4cf51c38 JS |
901 | { |
902 | struct device *dev = &data->client->dev; | |
26cdb1ae | 903 | struct mxt_message message; |
4cf51c38 JS |
904 | int count = 10; |
905 | int error; | |
4cf51c38 JS |
906 | |
907 | /* Read dummy message to make high CHG pin */ | |
908 | do { | |
26cdb1ae | 909 | error = mxt_read_message(data, &message); |
4cf51c38 JS |
910 | if (error) |
911 | return error; | |
26cdb1ae | 912 | } while (message.reportid != 0xff && --count); |
4cf51c38 JS |
913 | |
914 | if (!count) { | |
915 | dev_err(dev, "CHG pin isn't cleared\n"); | |
916 | return -EBUSY; | |
917 | } | |
918 | ||
919 | return 0; | |
920 | } | |
921 | ||
7686b108 | 922 | static int mxt_get_info(struct mxt_data *data) |
4cf51c38 JS |
923 | { |
924 | struct i2c_client *client = data->client; | |
7686b108 | 925 | struct mxt_info *info = &data->info; |
4cf51c38 | 926 | int error; |
4cf51c38 | 927 | |
23003a84 DK |
928 | /* Read 7-byte info block starting at address 0 */ |
929 | error = __mxt_read_reg(client, MXT_INFO, sizeof(*info), info); | |
4cf51c38 JS |
930 | if (error) |
931 | return error; | |
4cf51c38 JS |
932 | |
933 | return 0; | |
934 | } | |
935 | ||
7686b108 | 936 | static int mxt_get_object_table(struct mxt_data *data) |
4cf51c38 | 937 | { |
333e5a9a DK |
938 | struct i2c_client *client = data->client; |
939 | size_t table_size; | |
4cf51c38 JS |
940 | int error; |
941 | int i; | |
333e5a9a DK |
942 | u8 reportid; |
943 | ||
944 | table_size = data->info.object_num * sizeof(struct mxt_object); | |
945 | error = __mxt_read_reg(client, MXT_OBJECT_START, table_size, | |
946 | data->object_table); | |
947 | if (error) | |
948 | return error; | |
4cf51c38 | 949 | |
333e5a9a DK |
950 | /* Valid Report IDs start counting from 1 */ |
951 | reportid = 1; | |
4cf51c38 | 952 | for (i = 0; i < data->info.object_num; i++) { |
7686b108 | 953 | struct mxt_object *object = data->object_table + i; |
333e5a9a | 954 | u8 min_id, max_id; |
4cf51c38 | 955 | |
333e5a9a | 956 | le16_to_cpus(&object->start_address); |
4cf51c38 JS |
957 | |
958 | if (object->num_report_ids) { | |
333e5a9a | 959 | min_id = reportid; |
4cf51c38 | 960 | reportid += object->num_report_ids * |
1e0c0c5b | 961 | mxt_obj_instances(object); |
333e5a9a DK |
962 | max_id = reportid - 1; |
963 | } else { | |
964 | min_id = 0; | |
965 | max_id = 0; | |
966 | } | |
967 | ||
968 | dev_dbg(&data->client->dev, | |
7bed6805 | 969 | "T%u Start:%u Size:%zu Instances:%zu Report IDs:%u-%u\n", |
1e0c0c5b DK |
970 | object->type, object->start_address, |
971 | mxt_obj_size(object), mxt_obj_instances(object), | |
972 | min_id, max_id); | |
333e5a9a DK |
973 | |
974 | switch (object->type) { | |
fdf80421 DK |
975 | case MXT_GEN_COMMAND_T6: |
976 | data->T6_reportid = min_id; | |
a4a2ef46 | 977 | data->T6_address = object->start_address; |
fdf80421 | 978 | break; |
333e5a9a DK |
979 | case MXT_TOUCH_MULTI_T9: |
980 | data->T9_reportid_min = min_id; | |
981 | data->T9_reportid_max = max_id; | |
982 | break; | |
22dfab7f DK |
983 | case MXT_SPT_GPIOPWM_T19: |
984 | data->T19_reportid = min_id; | |
985 | break; | |
4cf51c38 JS |
986 | } |
987 | } | |
988 | ||
989 | return 0; | |
990 | } | |
991 | ||
7d4fa100 DK |
992 | static void mxt_free_object_table(struct mxt_data *data) |
993 | { | |
994 | kfree(data->object_table); | |
995 | data->object_table = NULL; | |
fdf80421 | 996 | data->T6_reportid = 0; |
333e5a9a DK |
997 | data->T9_reportid_min = 0; |
998 | data->T9_reportid_max = 0; | |
22dfab7f | 999 | data->T19_reportid = 0; |
7d4fa100 DK |
1000 | } |
1001 | ||
7686b108 | 1002 | static int mxt_initialize(struct mxt_data *data) |
4cf51c38 JS |
1003 | { |
1004 | struct i2c_client *client = data->client; | |
7686b108 | 1005 | struct mxt_info *info = &data->info; |
4cf51c38 JS |
1006 | int error; |
1007 | u8 val; | |
1008 | ||
7686b108 | 1009 | error = mxt_get_info(data); |
4cf51c38 JS |
1010 | if (error) |
1011 | return error; | |
1012 | ||
1013 | data->object_table = kcalloc(info->object_num, | |
7686b108 | 1014 | sizeof(struct mxt_object), |
4cf51c38 JS |
1015 | GFP_KERNEL); |
1016 | if (!data->object_table) { | |
1017 | dev_err(&client->dev, "Failed to allocate memory\n"); | |
1018 | return -ENOMEM; | |
1019 | } | |
1020 | ||
1021 | /* Get object table information */ | |
7686b108 | 1022 | error = mxt_get_object_table(data); |
7bed6805 ND |
1023 | if (error) { |
1024 | dev_err(&client->dev, "Error %d reading object table\n", error); | |
7d4fa100 | 1025 | goto err_free_object_table; |
7bed6805 | 1026 | } |
4cf51c38 JS |
1027 | |
1028 | /* Check register init values */ | |
7686b108 | 1029 | error = mxt_check_reg_init(data); |
7bed6805 ND |
1030 | if (error) { |
1031 | dev_err(&client->dev, "Error %d initializing configuration\n", | |
1032 | error); | |
7d4fa100 | 1033 | goto err_free_object_table; |
7bed6805 | 1034 | } |
4cf51c38 | 1035 | |
4cf51c38 | 1036 | /* Update matrix size at info struct */ |
7686b108 | 1037 | error = mxt_read_reg(client, MXT_MATRIX_X_SIZE, &val); |
4cf51c38 | 1038 | if (error) |
7d4fa100 | 1039 | goto err_free_object_table; |
4cf51c38 JS |
1040 | info->matrix_xsize = val; |
1041 | ||
7686b108 | 1042 | error = mxt_read_reg(client, MXT_MATRIX_Y_SIZE, &val); |
4cf51c38 | 1043 | if (error) |
7d4fa100 | 1044 | goto err_free_object_table; |
4cf51c38 JS |
1045 | info->matrix_ysize = val; |
1046 | ||
1047 | dev_info(&client->dev, | |
7bed6805 | 1048 | "Family: %u Variant: %u Firmware V%u.%u.%02X\n", |
e0e0269f DK |
1049 | info->family_id, info->variant_id, info->version >> 4, |
1050 | info->version & 0xf, info->build); | |
4cf51c38 JS |
1051 | |
1052 | dev_info(&client->dev, | |
7bed6805 | 1053 | "Matrix X Size: %u Matrix Y Size: %u Objects: %u\n", |
4cf51c38 JS |
1054 | info->matrix_xsize, info->matrix_ysize, |
1055 | info->object_num); | |
1056 | ||
1057 | return 0; | |
7d4fa100 DK |
1058 | |
1059 | err_free_object_table: | |
1060 | mxt_free_object_table(data); | |
1061 | return error; | |
4cf51c38 JS |
1062 | } |
1063 | ||
910d8051 JS |
1064 | static void mxt_calc_resolution(struct mxt_data *data) |
1065 | { | |
1066 | unsigned int max_x = data->pdata->x_size - 1; | |
1067 | unsigned int max_y = data->pdata->y_size - 1; | |
1068 | ||
1069 | if (data->pdata->orient & MXT_XY_SWITCH) { | |
1070 | data->max_x = max_y; | |
1071 | data->max_y = max_x; | |
1072 | } else { | |
1073 | data->max_x = max_x; | |
1074 | data->max_y = max_y; | |
1075 | } | |
1076 | } | |
1077 | ||
b19fc9ec DK |
1078 | /* Firmware Version is returned as Major.Minor.Build */ |
1079 | static ssize_t mxt_fw_version_show(struct device *dev, | |
1080 | struct device_attribute *attr, char *buf) | |
1081 | { | |
1082 | struct mxt_data *data = dev_get_drvdata(dev); | |
1083 | struct mxt_info *info = &data->info; | |
1084 | return scnprintf(buf, PAGE_SIZE, "%u.%u.%02X\n", | |
1085 | info->version >> 4, info->version & 0xf, info->build); | |
1086 | } | |
1087 | ||
1088 | /* Hardware Version is returned as FamilyID.VariantID */ | |
1089 | static ssize_t mxt_hw_version_show(struct device *dev, | |
1090 | struct device_attribute *attr, char *buf) | |
1091 | { | |
1092 | struct mxt_data *data = dev_get_drvdata(dev); | |
1093 | struct mxt_info *info = &data->info; | |
1094 | return scnprintf(buf, PAGE_SIZE, "%u.%u\n", | |
1095 | info->family_id, info->variant_id); | |
1096 | } | |
1097 | ||
794eb67e DK |
1098 | static ssize_t mxt_show_instance(char *buf, int count, |
1099 | struct mxt_object *object, int instance, | |
1100 | const u8 *val) | |
1101 | { | |
1102 | int i; | |
1103 | ||
1e0c0c5b | 1104 | if (mxt_obj_instances(object) > 1) |
794eb67e DK |
1105 | count += scnprintf(buf + count, PAGE_SIZE - count, |
1106 | "Instance %u\n", instance); | |
1107 | ||
1e0c0c5b | 1108 | for (i = 0; i < mxt_obj_size(object); i++) |
794eb67e DK |
1109 | count += scnprintf(buf + count, PAGE_SIZE - count, |
1110 | "\t[%2u]: %02x (%d)\n", i, val[i], val[i]); | |
1111 | count += scnprintf(buf + count, PAGE_SIZE - count, "\n"); | |
1112 | ||
1113 | return count; | |
1114 | } | |
1115 | ||
7686b108 | 1116 | static ssize_t mxt_object_show(struct device *dev, |
4cf51c38 JS |
1117 | struct device_attribute *attr, char *buf) |
1118 | { | |
7686b108 IV |
1119 | struct mxt_data *data = dev_get_drvdata(dev); |
1120 | struct mxt_object *object; | |
4cf51c38 JS |
1121 | int count = 0; |
1122 | int i, j; | |
1123 | int error; | |
43a91d51 | 1124 | u8 *obuf; |
4cf51c38 | 1125 | |
43a91d51 DK |
1126 | /* Pre-allocate buffer large enough to hold max sized object. */ |
1127 | obuf = kmalloc(256, GFP_KERNEL); | |
1128 | if (!obuf) | |
1129 | return -ENOMEM; | |
4cf51c38 | 1130 | |
43a91d51 | 1131 | error = 0; |
4cf51c38 JS |
1132 | for (i = 0; i < data->info.object_num; i++) { |
1133 | object = data->object_table + i; | |
1134 | ||
91630955 | 1135 | if (!mxt_object_readable(object->type)) |
4cf51c38 | 1136 | continue; |
4cf51c38 | 1137 | |
91630955 DK |
1138 | count += scnprintf(buf + count, PAGE_SIZE - count, |
1139 | "T%u:\n", object->type); | |
4cf51c38 | 1140 | |
1e0c0c5b DK |
1141 | for (j = 0; j < mxt_obj_instances(object); j++) { |
1142 | u16 size = mxt_obj_size(object); | |
794eb67e | 1143 | u16 addr = object->start_address + j * size; |
43a91d51 | 1144 | |
794eb67e | 1145 | error = __mxt_read_reg(data->client, addr, size, obuf); |
4cf51c38 | 1146 | if (error) |
794eb67e | 1147 | goto done; |
4cf51c38 | 1148 | |
794eb67e | 1149 | count = mxt_show_instance(buf, count, object, j, obuf); |
4cf51c38 | 1150 | } |
4cf51c38 JS |
1151 | } |
1152 | ||
794eb67e | 1153 | done: |
43a91d51 DK |
1154 | kfree(obuf); |
1155 | return error ?: count; | |
4cf51c38 JS |
1156 | } |
1157 | ||
7686b108 | 1158 | static int mxt_load_fw(struct device *dev, const char *fn) |
4cf51c38 | 1159 | { |
7686b108 | 1160 | struct mxt_data *data = dev_get_drvdata(dev); |
4cf51c38 JS |
1161 | const struct firmware *fw = NULL; |
1162 | unsigned int frame_size; | |
1163 | unsigned int pos = 0; | |
1164 | int ret; | |
1165 | ||
1166 | ret = request_firmware(&fw, fn, dev); | |
1167 | if (ret) { | |
1168 | dev_err(dev, "Unable to open firmware %s\n", fn); | |
1169 | return ret; | |
1170 | } | |
1171 | ||
f28a842d ND |
1172 | ret = mxt_lookup_bootloader_address(data); |
1173 | if (ret) | |
1174 | goto release_firmware; | |
1175 | ||
4cf51c38 | 1176 | /* Change to the bootloader mode */ |
d79e7e47 BL |
1177 | data->in_bootloader = true; |
1178 | ||
a4a2ef46 IV |
1179 | ret = mxt_t6_command(data, MXT_COMMAND_RESET, MXT_BOOT_VALUE, false); |
1180 | if (ret) | |
1181 | goto release_firmware; | |
1182 | ||
7686b108 | 1183 | msleep(MXT_RESET_TIME); |
4cf51c38 | 1184 | |
d79e7e47 BL |
1185 | reinit_completion(&data->bl_completion); |
1186 | ||
1187 | ret = mxt_check_bootloader(data, MXT_WAITING_BOOTLOAD_CMD); | |
4cf51c38 | 1188 | if (ret) |
d79e7e47 | 1189 | goto disable_irq; |
4cf51c38 JS |
1190 | |
1191 | /* Unlock bootloader */ | |
f28a842d | 1192 | mxt_unlock_bootloader(data); |
4cf51c38 JS |
1193 | |
1194 | while (pos < fw->size) { | |
d79e7e47 | 1195 | ret = mxt_check_bootloader(data, MXT_WAITING_FRAME_DATA); |
4cf51c38 | 1196 | if (ret) |
d79e7e47 | 1197 | goto disable_irq; |
4cf51c38 JS |
1198 | |
1199 | frame_size = ((*(fw->data + pos) << 8) | *(fw->data + pos + 1)); | |
1200 | ||
1201 | /* We should add 2 at frame size as the the firmware data is not | |
1202 | * included the CRC bytes. | |
1203 | */ | |
1204 | frame_size += 2; | |
1205 | ||
1206 | /* Write one frame to device */ | |
f28a842d ND |
1207 | ret = mxt_bootloader_write(data, fw->data + pos, frame_size); |
1208 | if (ret) | |
1209 | goto disable_irq; | |
4cf51c38 | 1210 | |
d79e7e47 | 1211 | ret = mxt_check_bootloader(data, MXT_FRAME_CRC_PASS); |
4cf51c38 | 1212 | if (ret) |
d79e7e47 | 1213 | goto disable_irq; |
4cf51c38 JS |
1214 | |
1215 | pos += frame_size; | |
1216 | ||
1217 | dev_dbg(dev, "Updated %d bytes / %zd bytes\n", pos, fw->size); | |
1218 | } | |
1219 | ||
a0434b75 | 1220 | /* Wait for flash. */ |
a4a2ef46 IV |
1221 | ret = mxt_wait_for_completion(data, &data->bl_completion, |
1222 | MXT_FW_RESET_TIME); | |
a0434b75 BL |
1223 | if (ret) |
1224 | goto disable_irq; | |
1225 | ||
1226 | /* | |
1227 | * Wait for device to reset. Some bootloader versions do not assert | |
1228 | * the CHG line after bootloading has finished, so ignore potential | |
1229 | * errors. | |
1230 | */ | |
a4a2ef46 | 1231 | mxt_wait_for_completion(data, &data->bl_completion, MXT_FW_RESET_TIME); |
a0434b75 | 1232 | |
d79e7e47 BL |
1233 | data->in_bootloader = false; |
1234 | ||
1235 | disable_irq: | |
1236 | disable_irq(data->irq); | |
a4a2ef46 | 1237 | release_firmware: |
4cf51c38 | 1238 | release_firmware(fw); |
4cf51c38 JS |
1239 | return ret; |
1240 | } | |
1241 | ||
7686b108 | 1242 | static ssize_t mxt_update_fw_store(struct device *dev, |
4cf51c38 JS |
1243 | struct device_attribute *attr, |
1244 | const char *buf, size_t count) | |
1245 | { | |
7686b108 | 1246 | struct mxt_data *data = dev_get_drvdata(dev); |
4cf51c38 JS |
1247 | int error; |
1248 | ||
7686b108 | 1249 | error = mxt_load_fw(dev, MXT_FW_NAME); |
4cf51c38 JS |
1250 | if (error) { |
1251 | dev_err(dev, "The firmware update failed(%d)\n", error); | |
1252 | count = error; | |
1253 | } else { | |
7bed6805 ND |
1254 | dev_info(dev, "The firmware update succeeded\n"); |
1255 | ||
7d4fa100 | 1256 | mxt_free_object_table(data); |
4cf51c38 | 1257 | |
7686b108 | 1258 | mxt_initialize(data); |
4cf51c38 | 1259 | |
d79e7e47 | 1260 | enable_irq(data->irq); |
4cf51c38 | 1261 | |
d79e7e47 BL |
1262 | error = mxt_make_highchg(data); |
1263 | if (error) | |
1264 | return error; | |
1265 | } | |
08960a07 | 1266 | |
4cf51c38 JS |
1267 | return count; |
1268 | } | |
1269 | ||
b19fc9ec DK |
1270 | static DEVICE_ATTR(fw_version, S_IRUGO, mxt_fw_version_show, NULL); |
1271 | static DEVICE_ATTR(hw_version, S_IRUGO, mxt_hw_version_show, NULL); | |
71b3e938 DK |
1272 | static DEVICE_ATTR(object, S_IRUGO, mxt_object_show, NULL); |
1273 | static DEVICE_ATTR(update_fw, S_IWUSR, NULL, mxt_update_fw_store); | |
4cf51c38 | 1274 | |
7686b108 | 1275 | static struct attribute *mxt_attrs[] = { |
b19fc9ec DK |
1276 | &dev_attr_fw_version.attr, |
1277 | &dev_attr_hw_version.attr, | |
4cf51c38 JS |
1278 | &dev_attr_object.attr, |
1279 | &dev_attr_update_fw.attr, | |
1280 | NULL | |
1281 | }; | |
1282 | ||
7686b108 IV |
1283 | static const struct attribute_group mxt_attr_group = { |
1284 | .attrs = mxt_attrs, | |
4cf51c38 JS |
1285 | }; |
1286 | ||
7686b108 | 1287 | static void mxt_start(struct mxt_data *data) |
4cf51c38 JS |
1288 | { |
1289 | /* Touch enable */ | |
7686b108 | 1290 | mxt_write_object(data, |
81c88a71 | 1291 | MXT_TOUCH_MULTI_T9, MXT_TOUCH_CTRL, 0x83); |
4cf51c38 JS |
1292 | } |
1293 | ||
7686b108 | 1294 | static void mxt_stop(struct mxt_data *data) |
4cf51c38 JS |
1295 | { |
1296 | /* Touch disable */ | |
7686b108 | 1297 | mxt_write_object(data, |
81c88a71 | 1298 | MXT_TOUCH_MULTI_T9, MXT_TOUCH_CTRL, 0); |
4cf51c38 JS |
1299 | } |
1300 | ||
7686b108 | 1301 | static int mxt_input_open(struct input_dev *dev) |
4cf51c38 | 1302 | { |
7686b108 | 1303 | struct mxt_data *data = input_get_drvdata(dev); |
4cf51c38 | 1304 | |
7686b108 | 1305 | mxt_start(data); |
4cf51c38 JS |
1306 | |
1307 | return 0; | |
1308 | } | |
1309 | ||
7686b108 | 1310 | static void mxt_input_close(struct input_dev *dev) |
4cf51c38 | 1311 | { |
7686b108 | 1312 | struct mxt_data *data = input_get_drvdata(dev); |
4cf51c38 | 1313 | |
7686b108 | 1314 | mxt_stop(data); |
4cf51c38 JS |
1315 | } |
1316 | ||
5298cc4c | 1317 | static int mxt_probe(struct i2c_client *client, |
4cf51c38 JS |
1318 | const struct i2c_device_id *id) |
1319 | { | |
c838cb3d | 1320 | const struct mxt_platform_data *pdata = dev_get_platdata(&client->dev); |
7686b108 | 1321 | struct mxt_data *data; |
4cf51c38 JS |
1322 | struct input_dev *input_dev; |
1323 | int error; | |
cb159115 | 1324 | unsigned int num_mt_slots; |
fb5e4c3e ND |
1325 | unsigned int mt_flags = 0; |
1326 | int i; | |
4cf51c38 | 1327 | |
919ed895 | 1328 | if (!pdata) |
4cf51c38 JS |
1329 | return -EINVAL; |
1330 | ||
7686b108 | 1331 | data = kzalloc(sizeof(struct mxt_data), GFP_KERNEL); |
4cf51c38 JS |
1332 | input_dev = input_allocate_device(); |
1333 | if (!data || !input_dev) { | |
1334 | dev_err(&client->dev, "Failed to allocate memory\n"); | |
1335 | error = -ENOMEM; | |
1336 | goto err_free_mem; | |
1337 | } | |
1338 | ||
fb5e4c3e | 1339 | input_dev->name = "Atmel maXTouch Touchscreen"; |
ec02ac2b DK |
1340 | snprintf(data->phys, sizeof(data->phys), "i2c-%u-%04x/input0", |
1341 | client->adapter->nr, client->addr); | |
22dfab7f | 1342 | |
ec02ac2b DK |
1343 | input_dev->phys = data->phys; |
1344 | ||
4cf51c38 JS |
1345 | input_dev->id.bustype = BUS_I2C; |
1346 | input_dev->dev.parent = &client->dev; | |
7686b108 IV |
1347 | input_dev->open = mxt_input_open; |
1348 | input_dev->close = mxt_input_close; | |
4cf51c38 | 1349 | |
910d8051 JS |
1350 | data->client = client; |
1351 | data->input_dev = input_dev; | |
1352 | data->pdata = pdata; | |
1353 | data->irq = client->irq; | |
1354 | ||
d79e7e47 | 1355 | init_completion(&data->bl_completion); |
a4a2ef46 | 1356 | init_completion(&data->reset_completion); |
c3f78043 | 1357 | init_completion(&data->crc_completion); |
d79e7e47 | 1358 | |
910d8051 JS |
1359 | mxt_calc_resolution(data); |
1360 | ||
cb159115 DK |
1361 | error = mxt_initialize(data); |
1362 | if (error) | |
1363 | goto err_free_mem; | |
1364 | ||
4cf51c38 JS |
1365 | __set_bit(EV_ABS, input_dev->evbit); |
1366 | __set_bit(EV_KEY, input_dev->evbit); | |
1367 | __set_bit(BTN_TOUCH, input_dev->keybit); | |
1368 | ||
fb5e4c3e | 1369 | if (pdata->t19_num_keys) { |
22dfab7f DK |
1370 | __set_bit(INPUT_PROP_BUTTONPAD, input_dev->propbit); |
1371 | ||
fb5e4c3e ND |
1372 | for (i = 0; i < pdata->t19_num_keys; i++) |
1373 | if (pdata->t19_keymap[i] != KEY_RESERVED) | |
1374 | input_set_capability(input_dev, EV_KEY, | |
1375 | pdata->t19_keymap[i]); | |
22dfab7f | 1376 | |
fb5e4c3e | 1377 | mt_flags |= INPUT_MT_POINTER; |
22dfab7f DK |
1378 | |
1379 | input_abs_set_res(input_dev, ABS_X, MXT_PIXELS_PER_MM); | |
1380 | input_abs_set_res(input_dev, ABS_Y, MXT_PIXELS_PER_MM); | |
1381 | input_abs_set_res(input_dev, ABS_MT_POSITION_X, | |
1382 | MXT_PIXELS_PER_MM); | |
1383 | input_abs_set_res(input_dev, ABS_MT_POSITION_Y, | |
1384 | MXT_PIXELS_PER_MM); | |
fb5e4c3e ND |
1385 | |
1386 | input_dev->name = "Atmel maXTouch Touchpad"; | |
22dfab7f DK |
1387 | } |
1388 | ||
4cf51c38 JS |
1389 | /* For single touch */ |
1390 | input_set_abs_params(input_dev, ABS_X, | |
910d8051 | 1391 | 0, data->max_x, 0, 0); |
4cf51c38 | 1392 | input_set_abs_params(input_dev, ABS_Y, |
910d8051 | 1393 | 0, data->max_y, 0, 0); |
28ac2933 YS |
1394 | input_set_abs_params(input_dev, ABS_PRESSURE, |
1395 | 0, 255, 0, 0); | |
4cf51c38 JS |
1396 | |
1397 | /* For multi touch */ | |
cb159115 | 1398 | num_mt_slots = data->T9_reportid_max - data->T9_reportid_min + 1; |
fb5e4c3e | 1399 | error = input_mt_init_slots(input_dev, num_mt_slots, mt_flags); |
e1e1658d | 1400 | if (error) |
cb159115 | 1401 | goto err_free_object; |
4cf51c38 | 1402 | input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR, |
7686b108 | 1403 | 0, MXT_MAX_AREA, 0, 0); |
4cf51c38 | 1404 | input_set_abs_params(input_dev, ABS_MT_POSITION_X, |
910d8051 | 1405 | 0, data->max_x, 0, 0); |
4cf51c38 | 1406 | input_set_abs_params(input_dev, ABS_MT_POSITION_Y, |
910d8051 | 1407 | 0, data->max_y, 0, 0); |
28ac2933 YS |
1408 | input_set_abs_params(input_dev, ABS_MT_PRESSURE, |
1409 | 0, 255, 0, 0); | |
4cf51c38 JS |
1410 | |
1411 | input_set_drvdata(input_dev, data); | |
4cf51c38 JS |
1412 | i2c_set_clientdata(client, data); |
1413 | ||
7686b108 | 1414 | error = request_threaded_irq(client->irq, NULL, mxt_interrupt, |
9b7e31bb | 1415 | pdata->irqflags | IRQF_ONESHOT, |
f053ea8d | 1416 | client->name, data); |
4cf51c38 JS |
1417 | if (error) { |
1418 | dev_err(&client->dev, "Failed to register interrupt\n"); | |
1419 | goto err_free_object; | |
1420 | } | |
1421 | ||
08960a07 IV |
1422 | error = mxt_make_highchg(data); |
1423 | if (error) | |
1424 | goto err_free_irq; | |
1425 | ||
4cf51c38 | 1426 | error = input_register_device(input_dev); |
7bed6805 ND |
1427 | if (error) { |
1428 | dev_err(&client->dev, "Error %d registering input device\n", | |
1429 | error); | |
4cf51c38 | 1430 | goto err_free_irq; |
7bed6805 | 1431 | } |
4cf51c38 | 1432 | |
7686b108 | 1433 | error = sysfs_create_group(&client->dev.kobj, &mxt_attr_group); |
7bed6805 ND |
1434 | if (error) { |
1435 | dev_err(&client->dev, "Failure %d creating sysfs group\n", | |
1436 | error); | |
4cf51c38 | 1437 | goto err_unregister_device; |
7bed6805 | 1438 | } |
4cf51c38 JS |
1439 | |
1440 | return 0; | |
1441 | ||
1442 | err_unregister_device: | |
1443 | input_unregister_device(input_dev); | |
1444 | input_dev = NULL; | |
1445 | err_free_irq: | |
1446 | free_irq(client->irq, data); | |
1447 | err_free_object: | |
1448 | kfree(data->object_table); | |
1449 | err_free_mem: | |
1450 | input_free_device(input_dev); | |
1451 | kfree(data); | |
1452 | return error; | |
1453 | } | |
1454 | ||
e2619cf7 | 1455 | static int mxt_remove(struct i2c_client *client) |
4cf51c38 | 1456 | { |
7686b108 | 1457 | struct mxt_data *data = i2c_get_clientdata(client); |
4cf51c38 | 1458 | |
7686b108 | 1459 | sysfs_remove_group(&client->dev.kobj, &mxt_attr_group); |
4cf51c38 JS |
1460 | free_irq(data->irq, data); |
1461 | input_unregister_device(data->input_dev); | |
1462 | kfree(data->object_table); | |
1463 | kfree(data); | |
1464 | ||
1465 | return 0; | |
1466 | } | |
1467 | ||
3a73c816 | 1468 | #ifdef CONFIG_PM_SLEEP |
7686b108 | 1469 | static int mxt_suspend(struct device *dev) |
4cf51c38 | 1470 | { |
8b5fce06 | 1471 | struct i2c_client *client = to_i2c_client(dev); |
7686b108 | 1472 | struct mxt_data *data = i2c_get_clientdata(client); |
4cf51c38 JS |
1473 | struct input_dev *input_dev = data->input_dev; |
1474 | ||
1475 | mutex_lock(&input_dev->mutex); | |
1476 | ||
1477 | if (input_dev->users) | |
7686b108 | 1478 | mxt_stop(data); |
4cf51c38 JS |
1479 | |
1480 | mutex_unlock(&input_dev->mutex); | |
1481 | ||
1482 | return 0; | |
1483 | } | |
1484 | ||
7686b108 | 1485 | static int mxt_resume(struct device *dev) |
4cf51c38 | 1486 | { |
8b5fce06 | 1487 | struct i2c_client *client = to_i2c_client(dev); |
7686b108 | 1488 | struct mxt_data *data = i2c_get_clientdata(client); |
4cf51c38 JS |
1489 | struct input_dev *input_dev = data->input_dev; |
1490 | ||
a4a2ef46 | 1491 | mxt_soft_reset(data); |
4cf51c38 JS |
1492 | |
1493 | mutex_lock(&input_dev->mutex); | |
1494 | ||
1495 | if (input_dev->users) | |
7686b108 | 1496 | mxt_start(data); |
4cf51c38 JS |
1497 | |
1498 | mutex_unlock(&input_dev->mutex); | |
1499 | ||
1500 | return 0; | |
1501 | } | |
4cf51c38 JS |
1502 | #endif |
1503 | ||
3a73c816 DK |
1504 | static SIMPLE_DEV_PM_OPS(mxt_pm_ops, mxt_suspend, mxt_resume); |
1505 | ||
7686b108 | 1506 | static const struct i2c_device_id mxt_id[] = { |
4cf51c38 | 1507 | { "qt602240_ts", 0 }, |
7686b108 | 1508 | { "atmel_mxt_ts", 0 }, |
22dfab7f | 1509 | { "atmel_mxt_tp", 0 }, |
46ee2a05 | 1510 | { "mXT224", 0 }, |
4cf51c38 JS |
1511 | { } |
1512 | }; | |
7686b108 | 1513 | MODULE_DEVICE_TABLE(i2c, mxt_id); |
4cf51c38 | 1514 | |
7686b108 | 1515 | static struct i2c_driver mxt_driver = { |
4cf51c38 | 1516 | .driver = { |
7686b108 | 1517 | .name = "atmel_mxt_ts", |
4cf51c38 | 1518 | .owner = THIS_MODULE, |
7686b108 | 1519 | .pm = &mxt_pm_ops, |
4cf51c38 | 1520 | }, |
7686b108 | 1521 | .probe = mxt_probe, |
1cb0aa88 | 1522 | .remove = mxt_remove, |
7686b108 | 1523 | .id_table = mxt_id, |
4cf51c38 JS |
1524 | }; |
1525 | ||
1b92c1cf | 1526 | module_i2c_driver(mxt_driver); |
4cf51c38 JS |
1527 | |
1528 | /* Module information */ | |
1529 | MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>"); | |
7686b108 | 1530 | MODULE_DESCRIPTION("Atmel maXTouch Touchscreen driver"); |
4cf51c38 | 1531 | MODULE_LICENSE("GPL"); |