Commit | Line | Data |
---|---|---|
4cf51c38 | 1 | /* |
7686b108 | 2 | * Atmel maXTouch Touchscreen driver |
4cf51c38 JS |
3 | * |
4 | * Copyright (C) 2010 Samsung Electronics Co.Ltd | |
5 | * Author: Joonyoung Shim <jy0922.shim@samsung.com> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2 of the License, or (at your | |
10 | * option) any later version. | |
11 | * | |
12 | */ | |
13 | ||
14 | #include <linux/module.h> | |
15 | #include <linux/init.h> | |
16 | #include <linux/delay.h> | |
17 | #include <linux/firmware.h> | |
18 | #include <linux/i2c.h> | |
964de521 | 19 | #include <linux/i2c/atmel_mxt_ts.h> |
8b86c1c2 | 20 | #include <linux/input/mt.h> |
4cf51c38 JS |
21 | #include <linux/interrupt.h> |
22 | #include <linux/slab.h> | |
23 | ||
24 | /* Version */ | |
7686b108 IV |
25 | #define MXT_VER_20 20 |
26 | #define MXT_VER_21 21 | |
27 | #define MXT_VER_22 22 | |
4cf51c38 JS |
28 | |
29 | /* Slave addresses */ | |
7686b108 IV |
30 | #define MXT_APP_LOW 0x4a |
31 | #define MXT_APP_HIGH 0x4b | |
32 | #define MXT_BOOT_LOW 0x24 | |
33 | #define MXT_BOOT_HIGH 0x25 | |
4cf51c38 JS |
34 | |
35 | /* Firmware */ | |
7686b108 | 36 | #define MXT_FW_NAME "maxtouch.fw" |
4cf51c38 JS |
37 | |
38 | /* Registers */ | |
23003a84 | 39 | #define MXT_INFO 0x00 |
7686b108 IV |
40 | #define MXT_FAMILY_ID 0x00 |
41 | #define MXT_VARIANT_ID 0x01 | |
42 | #define MXT_VERSION 0x02 | |
43 | #define MXT_BUILD 0x03 | |
44 | #define MXT_MATRIX_X_SIZE 0x04 | |
45 | #define MXT_MATRIX_Y_SIZE 0x05 | |
46 | #define MXT_OBJECT_NUM 0x06 | |
47 | #define MXT_OBJECT_START 0x07 | |
4cf51c38 | 48 | |
7686b108 | 49 | #define MXT_OBJECT_SIZE 6 |
4cf51c38 JS |
50 | |
51 | /* Object types */ | |
81c88a71 IV |
52 | #define MXT_DEBUG_DIAGNOSTIC_T37 37 |
53 | #define MXT_GEN_MESSAGE_T5 5 | |
54 | #define MXT_GEN_COMMAND_T6 6 | |
55 | #define MXT_GEN_POWER_T7 7 | |
56 | #define MXT_GEN_ACQUIRE_T8 8 | |
57 | #define MXT_GEN_DATASOURCE_T53 53 | |
58 | #define MXT_TOUCH_MULTI_T9 9 | |
59 | #define MXT_TOUCH_KEYARRAY_T15 15 | |
60 | #define MXT_TOUCH_PROXIMITY_T23 23 | |
61 | #define MXT_TOUCH_PROXKEY_T52 52 | |
62 | #define MXT_PROCI_GRIPFACE_T20 20 | |
63 | #define MXT_PROCG_NOISE_T22 22 | |
64 | #define MXT_PROCI_ONETOUCH_T24 24 | |
65 | #define MXT_PROCI_TWOTOUCH_T27 27 | |
66 | #define MXT_PROCI_GRIP_T40 40 | |
67 | #define MXT_PROCI_PALM_T41 41 | |
68 | #define MXT_PROCI_TOUCHSUPPRESSION_T42 42 | |
69 | #define MXT_PROCI_STYLUS_T47 47 | |
70 | #define MXT_PROCG_NOISESUPPRESSION_T48 48 | |
71 | #define MXT_SPT_COMMSCONFIG_T18 18 | |
72 | #define MXT_SPT_GPIOPWM_T19 19 | |
73 | #define MXT_SPT_SELFTEST_T25 25 | |
74 | #define MXT_SPT_CTECONFIG_T28 28 | |
75 | #define MXT_SPT_USERDATA_T38 38 | |
76 | #define MXT_SPT_DIGITIZER_T43 43 | |
77 | #define MXT_SPT_MESSAGECOUNT_T44 44 | |
78 | #define MXT_SPT_CTECONFIG_T46 46 | |
79 | ||
80 | /* MXT_GEN_COMMAND_T6 field */ | |
7686b108 IV |
81 | #define MXT_COMMAND_RESET 0 |
82 | #define MXT_COMMAND_BACKUPNV 1 | |
83 | #define MXT_COMMAND_CALIBRATE 2 | |
84 | #define MXT_COMMAND_REPORTALL 3 | |
85 | #define MXT_COMMAND_DIAGNOSTIC 5 | |
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 IV |
177 | #define MXT_BOOT_VALUE 0xa5 |
178 | #define MXT_BACKUP_VALUE 0x55 | |
179 | #define MXT_BACKUP_TIME 25 /* msec */ | |
180 | #define MXT_RESET_TIME 65 /* msec */ | |
181 | ||
182 | #define MXT_FWRESET_TIME 175 /* msec */ | |
4cf51c38 JS |
183 | |
184 | /* Command to unlock bootloader */ | |
7686b108 IV |
185 | #define MXT_UNLOCK_CMD_MSB 0xaa |
186 | #define MXT_UNLOCK_CMD_LSB 0xdc | |
4cf51c38 JS |
187 | |
188 | /* Bootloader mode status */ | |
7686b108 IV |
189 | #define MXT_WAITING_BOOTLOAD_CMD 0xc0 /* valid 7 6 bit only */ |
190 | #define MXT_WAITING_FRAME_DATA 0x80 /* valid 7 6 bit only */ | |
191 | #define MXT_FRAME_CRC_CHECK 0x02 | |
192 | #define MXT_FRAME_CRC_FAIL 0x03 | |
193 | #define MXT_FRAME_CRC_PASS 0x04 | |
194 | #define MXT_APP_CRC_FAIL 0x40 /* valid 7 8 bit only */ | |
195 | #define MXT_BOOT_STATUS_MASK 0x3f | |
4cf51c38 JS |
196 | |
197 | /* Touch status */ | |
7686b108 IV |
198 | #define MXT_SUPPRESS (1 << 1) |
199 | #define MXT_AMP (1 << 2) | |
200 | #define MXT_VECTOR (1 << 3) | |
201 | #define MXT_MOVE (1 << 4) | |
202 | #define MXT_RELEASE (1 << 5) | |
203 | #define MXT_PRESS (1 << 6) | |
204 | #define MXT_DETECT (1 << 7) | |
4cf51c38 | 205 | |
910d8051 JS |
206 | /* Touch orient bits */ |
207 | #define MXT_XY_SWITCH (1 << 0) | |
208 | #define MXT_X_INVERT (1 << 1) | |
209 | #define MXT_Y_INVERT (1 << 2) | |
210 | ||
4cf51c38 | 211 | /* Touchscreen absolute values */ |
7686b108 | 212 | #define MXT_MAX_AREA 0xff |
4cf51c38 | 213 | |
7686b108 | 214 | #define MXT_MAX_FINGER 10 |
4cf51c38 | 215 | |
7686b108 | 216 | struct mxt_info { |
4cf51c38 JS |
217 | u8 family_id; |
218 | u8 variant_id; | |
219 | u8 version; | |
220 | u8 build; | |
221 | u8 matrix_xsize; | |
222 | u8 matrix_ysize; | |
223 | u8 object_num; | |
224 | }; | |
225 | ||
7686b108 | 226 | struct mxt_object { |
4cf51c38 JS |
227 | u8 type; |
228 | u16 start_address; | |
229 | u8 size; | |
230 | u8 instances; | |
231 | u8 num_report_ids; | |
232 | ||
233 | /* to map object and message */ | |
234 | u8 max_reportid; | |
235 | }; | |
236 | ||
7686b108 | 237 | struct mxt_message { |
4cf51c38 JS |
238 | u8 reportid; |
239 | u8 message[7]; | |
4cf51c38 JS |
240 | }; |
241 | ||
7686b108 | 242 | struct mxt_finger { |
4cf51c38 JS |
243 | int status; |
244 | int x; | |
245 | int y; | |
246 | int area; | |
28ac2933 | 247 | int pressure; |
4cf51c38 JS |
248 | }; |
249 | ||
250 | /* Each client has this additional data */ | |
7686b108 | 251 | struct 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; | |
258 | struct mxt_finger finger[MXT_MAX_FINGER]; | |
4cf51c38 | 259 | unsigned int irq; |
910d8051 JS |
260 | unsigned int max_x; |
261 | unsigned int max_y; | |
4cf51c38 JS |
262 | }; |
263 | ||
7686b108 | 264 | static bool mxt_object_readable(unsigned int type) |
4cf51c38 JS |
265 | { |
266 | switch (type) { | |
81c88a71 IV |
267 | case MXT_GEN_COMMAND_T6: |
268 | case MXT_GEN_POWER_T7: | |
269 | case MXT_GEN_ACQUIRE_T8: | |
270 | case MXT_GEN_DATASOURCE_T53: | |
271 | case MXT_TOUCH_MULTI_T9: | |
272 | case MXT_TOUCH_KEYARRAY_T15: | |
273 | case MXT_TOUCH_PROXIMITY_T23: | |
274 | case MXT_TOUCH_PROXKEY_T52: | |
275 | case MXT_PROCI_GRIPFACE_T20: | |
276 | case MXT_PROCG_NOISE_T22: | |
277 | case MXT_PROCI_ONETOUCH_T24: | |
278 | case MXT_PROCI_TWOTOUCH_T27: | |
279 | case MXT_PROCI_GRIP_T40: | |
280 | case MXT_PROCI_PALM_T41: | |
281 | case MXT_PROCI_TOUCHSUPPRESSION_T42: | |
282 | case MXT_PROCI_STYLUS_T47: | |
283 | case MXT_PROCG_NOISESUPPRESSION_T48: | |
284 | case MXT_SPT_COMMSCONFIG_T18: | |
285 | case MXT_SPT_GPIOPWM_T19: | |
286 | case MXT_SPT_SELFTEST_T25: | |
287 | case MXT_SPT_CTECONFIG_T28: | |
288 | case MXT_SPT_USERDATA_T38: | |
289 | case MXT_SPT_DIGITIZER_T43: | |
290 | case MXT_SPT_CTECONFIG_T46: | |
4cf51c38 JS |
291 | return true; |
292 | default: | |
293 | return false; | |
294 | } | |
295 | } | |
296 | ||
7686b108 | 297 | static bool mxt_object_writable(unsigned int type) |
4cf51c38 JS |
298 | { |
299 | switch (type) { | |
81c88a71 IV |
300 | case MXT_GEN_COMMAND_T6: |
301 | case MXT_GEN_POWER_T7: | |
302 | case MXT_GEN_ACQUIRE_T8: | |
303 | case MXT_TOUCH_MULTI_T9: | |
304 | case MXT_TOUCH_KEYARRAY_T15: | |
305 | case MXT_TOUCH_PROXIMITY_T23: | |
306 | case MXT_TOUCH_PROXKEY_T52: | |
307 | case MXT_PROCI_GRIPFACE_T20: | |
308 | case MXT_PROCG_NOISE_T22: | |
309 | case MXT_PROCI_ONETOUCH_T24: | |
310 | case MXT_PROCI_TWOTOUCH_T27: | |
311 | case MXT_PROCI_GRIP_T40: | |
312 | case MXT_PROCI_PALM_T41: | |
313 | case MXT_PROCI_TOUCHSUPPRESSION_T42: | |
314 | case MXT_PROCI_STYLUS_T47: | |
315 | case MXT_PROCG_NOISESUPPRESSION_T48: | |
316 | case MXT_SPT_COMMSCONFIG_T18: | |
317 | case MXT_SPT_GPIOPWM_T19: | |
318 | case MXT_SPT_SELFTEST_T25: | |
319 | case MXT_SPT_CTECONFIG_T28: | |
320 | case MXT_SPT_DIGITIZER_T43: | |
321 | case MXT_SPT_CTECONFIG_T46: | |
4cf51c38 JS |
322 | return true; |
323 | default: | |
324 | return false; | |
325 | } | |
326 | } | |
327 | ||
7686b108 | 328 | static void mxt_dump_message(struct device *dev, |
6ee3dbf9 | 329 | struct mxt_message *message) |
4cf51c38 | 330 | { |
6ee3dbf9 DK |
331 | dev_dbg(dev, "reportid: %u\tmessage: %02x %02x %02x %02x %02x %02x %02x\n", |
332 | message->reportid, message->message[0], message->message[1], | |
333 | message->message[2], message->message[3], message->message[4], | |
334 | message->message[5], message->message[6]); | |
4cf51c38 JS |
335 | } |
336 | ||
7686b108 | 337 | static int mxt_check_bootloader(struct i2c_client *client, |
4cf51c38 JS |
338 | unsigned int state) |
339 | { | |
340 | u8 val; | |
341 | ||
342 | recheck: | |
343 | if (i2c_master_recv(client, &val, 1) != 1) { | |
344 | dev_err(&client->dev, "%s: i2c recv failed\n", __func__); | |
345 | return -EIO; | |
346 | } | |
347 | ||
348 | switch (state) { | |
7686b108 IV |
349 | case MXT_WAITING_BOOTLOAD_CMD: |
350 | case MXT_WAITING_FRAME_DATA: | |
351 | val &= ~MXT_BOOT_STATUS_MASK; | |
4cf51c38 | 352 | break; |
7686b108 IV |
353 | case MXT_FRAME_CRC_PASS: |
354 | if (val == MXT_FRAME_CRC_CHECK) | |
4cf51c38 JS |
355 | goto recheck; |
356 | break; | |
357 | default: | |
358 | return -EINVAL; | |
359 | } | |
360 | ||
361 | if (val != state) { | |
362 | dev_err(&client->dev, "Unvalid bootloader mode state\n"); | |
363 | return -EINVAL; | |
364 | } | |
365 | ||
366 | return 0; | |
367 | } | |
368 | ||
7686b108 | 369 | static int mxt_unlock_bootloader(struct i2c_client *client) |
4cf51c38 JS |
370 | { |
371 | u8 buf[2]; | |
372 | ||
7686b108 IV |
373 | buf[0] = MXT_UNLOCK_CMD_LSB; |
374 | buf[1] = MXT_UNLOCK_CMD_MSB; | |
4cf51c38 JS |
375 | |
376 | if (i2c_master_send(client, buf, 2) != 2) { | |
377 | dev_err(&client->dev, "%s: i2c send failed\n", __func__); | |
378 | return -EIO; | |
379 | } | |
380 | ||
381 | return 0; | |
382 | } | |
383 | ||
7686b108 | 384 | static int mxt_fw_write(struct i2c_client *client, |
4cf51c38 JS |
385 | const u8 *data, unsigned int frame_size) |
386 | { | |
387 | if (i2c_master_send(client, data, frame_size) != frame_size) { | |
388 | dev_err(&client->dev, "%s: i2c send failed\n", __func__); | |
389 | return -EIO; | |
390 | } | |
391 | ||
392 | return 0; | |
393 | } | |
394 | ||
7686b108 | 395 | static int __mxt_read_reg(struct i2c_client *client, |
4cf51c38 JS |
396 | u16 reg, u16 len, void *val) |
397 | { | |
398 | struct i2c_msg xfer[2]; | |
399 | u8 buf[2]; | |
771733e3 | 400 | int ret; |
4cf51c38 JS |
401 | |
402 | buf[0] = reg & 0xff; | |
403 | buf[1] = (reg >> 8) & 0xff; | |
404 | ||
405 | /* Write register */ | |
406 | xfer[0].addr = client->addr; | |
407 | xfer[0].flags = 0; | |
408 | xfer[0].len = 2; | |
409 | xfer[0].buf = buf; | |
410 | ||
411 | /* Read data */ | |
412 | xfer[1].addr = client->addr; | |
413 | xfer[1].flags = I2C_M_RD; | |
414 | xfer[1].len = len; | |
415 | xfer[1].buf = val; | |
416 | ||
771733e3 DK |
417 | ret = i2c_transfer(client->adapter, xfer, 2); |
418 | if (ret == 2) { | |
419 | ret = 0; | |
420 | } else { | |
421 | if (ret >= 0) | |
422 | ret = -EIO; | |
423 | dev_err(&client->dev, "%s: i2c transfer failed (%d)\n", | |
424 | __func__, ret); | |
4cf51c38 JS |
425 | } |
426 | ||
771733e3 | 427 | return ret; |
4cf51c38 JS |
428 | } |
429 | ||
7686b108 | 430 | static int mxt_read_reg(struct i2c_client *client, u16 reg, u8 *val) |
4cf51c38 | 431 | { |
7686b108 | 432 | return __mxt_read_reg(client, reg, 1, val); |
4cf51c38 JS |
433 | } |
434 | ||
9638ab7c DK |
435 | static int __mxt_write_reg(struct i2c_client *client, u16 reg, u16 len, |
436 | const void *val) | |
4cf51c38 | 437 | { |
9638ab7c DK |
438 | u8 *buf; |
439 | size_t count; | |
771733e3 | 440 | int ret; |
4cf51c38 | 441 | |
9638ab7c DK |
442 | count = len + 2; |
443 | buf = kmalloc(count, GFP_KERNEL); | |
444 | if (!buf) | |
445 | return -ENOMEM; | |
446 | ||
4cf51c38 JS |
447 | buf[0] = reg & 0xff; |
448 | buf[1] = (reg >> 8) & 0xff; | |
9638ab7c | 449 | memcpy(&buf[2], val, len); |
4cf51c38 | 450 | |
9638ab7c DK |
451 | ret = i2c_master_send(client, buf, count); |
452 | if (ret == count) { | |
771733e3 DK |
453 | ret = 0; |
454 | } else { | |
455 | if (ret >= 0) | |
456 | ret = -EIO; | |
457 | dev_err(&client->dev, "%s: i2c send failed (%d)\n", | |
458 | __func__, ret); | |
4cf51c38 JS |
459 | } |
460 | ||
9638ab7c | 461 | kfree(buf); |
771733e3 | 462 | return ret; |
4cf51c38 JS |
463 | } |
464 | ||
9638ab7c DK |
465 | static int mxt_write_reg(struct i2c_client *client, u16 reg, u8 val) |
466 | { | |
467 | return __mxt_write_reg(client, reg, 1, &val); | |
468 | } | |
469 | ||
7686b108 | 470 | static int mxt_read_object_table(struct i2c_client *client, |
4cf51c38 JS |
471 | u16 reg, u8 *object_buf) |
472 | { | |
7686b108 | 473 | return __mxt_read_reg(client, reg, MXT_OBJECT_SIZE, |
4cf51c38 JS |
474 | object_buf); |
475 | } | |
476 | ||
7686b108 IV |
477 | static struct mxt_object * |
478 | mxt_get_object(struct mxt_data *data, u8 type) | |
4cf51c38 | 479 | { |
7686b108 | 480 | struct mxt_object *object; |
4cf51c38 JS |
481 | int i; |
482 | ||
483 | for (i = 0; i < data->info.object_num; i++) { | |
484 | object = data->object_table + i; | |
485 | if (object->type == type) | |
486 | return object; | |
487 | } | |
488 | ||
489 | dev_err(&data->client->dev, "Invalid object type\n"); | |
490 | return NULL; | |
491 | } | |
492 | ||
7686b108 IV |
493 | static int mxt_read_message(struct mxt_data *data, |
494 | struct mxt_message *message) | |
4cf51c38 | 495 | { |
7686b108 | 496 | struct mxt_object *object; |
4cf51c38 JS |
497 | u16 reg; |
498 | ||
81c88a71 | 499 | object = mxt_get_object(data, MXT_GEN_MESSAGE_T5); |
4cf51c38 JS |
500 | if (!object) |
501 | return -EINVAL; | |
502 | ||
503 | reg = object->start_address; | |
7686b108 IV |
504 | return __mxt_read_reg(data->client, reg, |
505 | sizeof(struct mxt_message), message); | |
4cf51c38 JS |
506 | } |
507 | ||
7686b108 | 508 | static int mxt_write_object(struct mxt_data *data, |
4cf51c38 JS |
509 | u8 type, u8 offset, u8 val) |
510 | { | |
7686b108 | 511 | struct mxt_object *object; |
4cf51c38 JS |
512 | u16 reg; |
513 | ||
7686b108 | 514 | object = mxt_get_object(data, type); |
d1ff320f | 515 | if (!object || offset >= object->size + 1) |
4cf51c38 JS |
516 | return -EINVAL; |
517 | ||
518 | reg = object->start_address; | |
7686b108 | 519 | return mxt_write_reg(data->client, reg + offset, val); |
4cf51c38 JS |
520 | } |
521 | ||
7686b108 | 522 | static void mxt_input_report(struct mxt_data *data, int single_id) |
4cf51c38 | 523 | { |
7686b108 | 524 | struct mxt_finger *finger = data->finger; |
4cf51c38 JS |
525 | struct input_dev *input_dev = data->input_dev; |
526 | int status = finger[single_id].status; | |
527 | int finger_num = 0; | |
528 | int id; | |
529 | ||
7686b108 | 530 | for (id = 0; id < MXT_MAX_FINGER; id++) { |
4cf51c38 JS |
531 | if (!finger[id].status) |
532 | continue; | |
533 | ||
8b86c1c2 JS |
534 | input_mt_slot(input_dev, id); |
535 | input_mt_report_slot_state(input_dev, MT_TOOL_FINGER, | |
536 | finger[id].status != MXT_RELEASE); | |
4cf51c38 | 537 | |
8b86c1c2 | 538 | if (finger[id].status != MXT_RELEASE) { |
4cf51c38 | 539 | finger_num++; |
8b86c1c2 JS |
540 | input_report_abs(input_dev, ABS_MT_TOUCH_MAJOR, |
541 | finger[id].area); | |
542 | input_report_abs(input_dev, ABS_MT_POSITION_X, | |
543 | finger[id].x); | |
544 | input_report_abs(input_dev, ABS_MT_POSITION_Y, | |
545 | finger[id].y); | |
28ac2933 YS |
546 | input_report_abs(input_dev, ABS_MT_PRESSURE, |
547 | finger[id].pressure); | |
8b86c1c2 JS |
548 | } else { |
549 | finger[id].status = 0; | |
550 | } | |
4cf51c38 JS |
551 | } |
552 | ||
553 | input_report_key(input_dev, BTN_TOUCH, finger_num > 0); | |
554 | ||
7686b108 | 555 | if (status != MXT_RELEASE) { |
4cf51c38 JS |
556 | input_report_abs(input_dev, ABS_X, finger[single_id].x); |
557 | input_report_abs(input_dev, ABS_Y, finger[single_id].y); | |
28ac2933 YS |
558 | input_report_abs(input_dev, |
559 | ABS_PRESSURE, finger[single_id].pressure); | |
4cf51c38 JS |
560 | } |
561 | ||
562 | input_sync(input_dev); | |
563 | } | |
564 | ||
7686b108 IV |
565 | static void mxt_input_touchevent(struct mxt_data *data, |
566 | struct mxt_message *message, int id) | |
4cf51c38 | 567 | { |
7686b108 | 568 | struct mxt_finger *finger = data->finger; |
4cf51c38 JS |
569 | struct device *dev = &data->client->dev; |
570 | u8 status = message->message[0]; | |
571 | int x; | |
572 | int y; | |
573 | int area; | |
28ac2933 | 574 | int pressure; |
4cf51c38 JS |
575 | |
576 | /* Check the touch is present on the screen */ | |
7686b108 IV |
577 | if (!(status & MXT_DETECT)) { |
578 | if (status & MXT_RELEASE) { | |
4cf51c38 JS |
579 | dev_dbg(dev, "[%d] released\n", id); |
580 | ||
7686b108 IV |
581 | finger[id].status = MXT_RELEASE; |
582 | mxt_input_report(data, id); | |
4cf51c38 JS |
583 | } |
584 | return; | |
585 | } | |
586 | ||
587 | /* Check only AMP detection */ | |
7686b108 | 588 | if (!(status & (MXT_PRESS | MXT_MOVE))) |
4cf51c38 JS |
589 | return; |
590 | ||
910d8051 JS |
591 | x = (message->message[1] << 4) | ((message->message[3] >> 4) & 0xf); |
592 | y = (message->message[2] << 4) | ((message->message[3] & 0xf)); | |
593 | if (data->max_x < 1024) | |
594 | x = x >> 2; | |
595 | if (data->max_y < 1024) | |
596 | y = y >> 2; | |
597 | ||
4cf51c38 | 598 | area = message->message[4]; |
28ac2933 | 599 | pressure = message->message[5]; |
4cf51c38 JS |
600 | |
601 | dev_dbg(dev, "[%d] %s x: %d, y: %d, area: %d\n", id, | |
7686b108 | 602 | status & MXT_MOVE ? "moved" : "pressed", |
4cf51c38 JS |
603 | x, y, area); |
604 | ||
7686b108 IV |
605 | finger[id].status = status & MXT_MOVE ? |
606 | MXT_MOVE : MXT_PRESS; | |
4cf51c38 JS |
607 | finger[id].x = x; |
608 | finger[id].y = y; | |
609 | finger[id].area = area; | |
28ac2933 | 610 | finger[id].pressure = pressure; |
4cf51c38 | 611 | |
7686b108 | 612 | mxt_input_report(data, id); |
4cf51c38 JS |
613 | } |
614 | ||
7686b108 | 615 | static irqreturn_t mxt_interrupt(int irq, void *dev_id) |
4cf51c38 | 616 | { |
7686b108 IV |
617 | struct mxt_data *data = dev_id; |
618 | struct mxt_message message; | |
619 | struct mxt_object *object; | |
4cf51c38 JS |
620 | struct device *dev = &data->client->dev; |
621 | int id; | |
622 | u8 reportid; | |
623 | u8 max_reportid; | |
624 | u8 min_reportid; | |
625 | ||
626 | do { | |
7686b108 | 627 | if (mxt_read_message(data, &message)) { |
4cf51c38 JS |
628 | dev_err(dev, "Failed to read message\n"); |
629 | goto end; | |
630 | } | |
631 | ||
632 | reportid = message.reportid; | |
633 | ||
81c88a71 IV |
634 | /* whether reportid is thing of MXT_TOUCH_MULTI_T9 */ |
635 | object = mxt_get_object(data, MXT_TOUCH_MULTI_T9); | |
4cf51c38 JS |
636 | if (!object) |
637 | goto end; | |
638 | ||
639 | max_reportid = object->max_reportid; | |
640 | min_reportid = max_reportid - object->num_report_ids + 1; | |
641 | id = reportid - min_reportid; | |
642 | ||
643 | if (reportid >= min_reportid && reportid <= max_reportid) | |
7686b108 | 644 | mxt_input_touchevent(data, &message, id); |
4cf51c38 | 645 | else |
7686b108 | 646 | mxt_dump_message(dev, &message); |
4cf51c38 JS |
647 | } while (reportid != 0xff); |
648 | ||
649 | end: | |
650 | return IRQ_HANDLED; | |
651 | } | |
652 | ||
7686b108 | 653 | static int mxt_check_reg_init(struct mxt_data *data) |
4cf51c38 | 654 | { |
71749f5c | 655 | const struct mxt_platform_data *pdata = data->pdata; |
7686b108 | 656 | struct mxt_object *object; |
4cf51c38 JS |
657 | struct device *dev = &data->client->dev; |
658 | int index = 0; | |
cf94bc09 DK |
659 | int i, size; |
660 | int ret; | |
4cf51c38 | 661 | |
71749f5c IV |
662 | if (!pdata->config) { |
663 | dev_dbg(dev, "No cfg data defined, skipping reg init\n"); | |
664 | return 0; | |
4cf51c38 JS |
665 | } |
666 | ||
667 | for (i = 0; i < data->info.object_num; i++) { | |
668 | object = data->object_table + i; | |
669 | ||
7686b108 | 670 | if (!mxt_object_writable(object->type)) |
4cf51c38 JS |
671 | continue; |
672 | ||
cf94bc09 DK |
673 | size = (object->size + 1) * (object->instances + 1); |
674 | if (index + size > pdata->config_length) { | |
675 | dev_err(dev, "Not enough config data!\n"); | |
676 | return -EINVAL; | |
71749f5c | 677 | } |
cf94bc09 DK |
678 | |
679 | ret = __mxt_write_reg(data->client, object->start_address, | |
680 | size, &pdata->config[index]); | |
681 | if (ret) | |
682 | return ret; | |
683 | index += size; | |
4cf51c38 JS |
684 | } |
685 | ||
686 | return 0; | |
687 | } | |
688 | ||
7686b108 | 689 | static int mxt_make_highchg(struct mxt_data *data) |
4cf51c38 JS |
690 | { |
691 | struct device *dev = &data->client->dev; | |
26cdb1ae | 692 | struct mxt_message message; |
4cf51c38 JS |
693 | int count = 10; |
694 | int error; | |
4cf51c38 JS |
695 | |
696 | /* Read dummy message to make high CHG pin */ | |
697 | do { | |
26cdb1ae | 698 | error = mxt_read_message(data, &message); |
4cf51c38 JS |
699 | if (error) |
700 | return error; | |
26cdb1ae | 701 | } while (message.reportid != 0xff && --count); |
4cf51c38 JS |
702 | |
703 | if (!count) { | |
704 | dev_err(dev, "CHG pin isn't cleared\n"); | |
705 | return -EBUSY; | |
706 | } | |
707 | ||
708 | return 0; | |
709 | } | |
710 | ||
7686b108 | 711 | static void mxt_handle_pdata(struct mxt_data *data) |
4cf51c38 | 712 | { |
7686b108 | 713 | const struct mxt_platform_data *pdata = data->pdata; |
4cf51c38 JS |
714 | u8 voltage; |
715 | ||
716 | /* Set touchscreen lines */ | |
81c88a71 | 717 | mxt_write_object(data, MXT_TOUCH_MULTI_T9, MXT_TOUCH_XSIZE, |
4cf51c38 | 718 | pdata->x_line); |
81c88a71 | 719 | mxt_write_object(data, MXT_TOUCH_MULTI_T9, MXT_TOUCH_YSIZE, |
4cf51c38 JS |
720 | pdata->y_line); |
721 | ||
722 | /* Set touchscreen orient */ | |
81c88a71 | 723 | mxt_write_object(data, MXT_TOUCH_MULTI_T9, MXT_TOUCH_ORIENT, |
4cf51c38 JS |
724 | pdata->orient); |
725 | ||
726 | /* Set touchscreen burst length */ | |
81c88a71 | 727 | mxt_write_object(data, MXT_TOUCH_MULTI_T9, |
7686b108 | 728 | MXT_TOUCH_BLEN, pdata->blen); |
4cf51c38 JS |
729 | |
730 | /* Set touchscreen threshold */ | |
81c88a71 | 731 | mxt_write_object(data, MXT_TOUCH_MULTI_T9, |
7686b108 | 732 | MXT_TOUCH_TCHTHR, pdata->threshold); |
4cf51c38 JS |
733 | |
734 | /* Set touchscreen resolution */ | |
81c88a71 | 735 | mxt_write_object(data, MXT_TOUCH_MULTI_T9, |
7686b108 | 736 | MXT_TOUCH_XRANGE_LSB, (pdata->x_size - 1) & 0xff); |
81c88a71 | 737 | mxt_write_object(data, MXT_TOUCH_MULTI_T9, |
7686b108 | 738 | MXT_TOUCH_XRANGE_MSB, (pdata->x_size - 1) >> 8); |
81c88a71 | 739 | mxt_write_object(data, MXT_TOUCH_MULTI_T9, |
7686b108 | 740 | MXT_TOUCH_YRANGE_LSB, (pdata->y_size - 1) & 0xff); |
81c88a71 | 741 | mxt_write_object(data, MXT_TOUCH_MULTI_T9, |
7686b108 | 742 | MXT_TOUCH_YRANGE_MSB, (pdata->y_size - 1) >> 8); |
4cf51c38 JS |
743 | |
744 | /* Set touchscreen voltage */ | |
979a72da | 745 | if (pdata->voltage) { |
7686b108 IV |
746 | if (pdata->voltage < MXT_VOLTAGE_DEFAULT) { |
747 | voltage = (MXT_VOLTAGE_DEFAULT - pdata->voltage) / | |
748 | MXT_VOLTAGE_STEP; | |
4cf51c38 JS |
749 | voltage = 0xff - voltage + 1; |
750 | } else | |
7686b108 IV |
751 | voltage = (pdata->voltage - MXT_VOLTAGE_DEFAULT) / |
752 | MXT_VOLTAGE_STEP; | |
4cf51c38 | 753 | |
81c88a71 | 754 | mxt_write_object(data, MXT_SPT_CTECONFIG_T28, |
7686b108 | 755 | MXT_CTE_VOLTAGE, voltage); |
4cf51c38 JS |
756 | } |
757 | } | |
758 | ||
7686b108 | 759 | static int mxt_get_info(struct mxt_data *data) |
4cf51c38 JS |
760 | { |
761 | struct i2c_client *client = data->client; | |
7686b108 | 762 | struct mxt_info *info = &data->info; |
4cf51c38 | 763 | int error; |
4cf51c38 | 764 | |
23003a84 DK |
765 | /* Read 7-byte info block starting at address 0 */ |
766 | error = __mxt_read_reg(client, MXT_INFO, sizeof(*info), info); | |
4cf51c38 JS |
767 | if (error) |
768 | return error; | |
4cf51c38 JS |
769 | |
770 | return 0; | |
771 | } | |
772 | ||
7686b108 | 773 | static int mxt_get_object_table(struct mxt_data *data) |
4cf51c38 JS |
774 | { |
775 | int error; | |
776 | int i; | |
777 | u16 reg; | |
778 | u8 reportid = 0; | |
7686b108 | 779 | u8 buf[MXT_OBJECT_SIZE]; |
4cf51c38 JS |
780 | |
781 | for (i = 0; i < data->info.object_num; i++) { | |
7686b108 | 782 | struct mxt_object *object = data->object_table + i; |
4cf51c38 | 783 | |
7686b108 IV |
784 | reg = MXT_OBJECT_START + MXT_OBJECT_SIZE * i; |
785 | error = mxt_read_object_table(data->client, reg, buf); | |
4cf51c38 JS |
786 | if (error) |
787 | return error; | |
788 | ||
789 | object->type = buf[0]; | |
790 | object->start_address = (buf[2] << 8) | buf[1]; | |
791 | object->size = buf[3]; | |
792 | object->instances = buf[4]; | |
793 | object->num_report_ids = buf[5]; | |
794 | ||
795 | if (object->num_report_ids) { | |
796 | reportid += object->num_report_ids * | |
797 | (object->instances + 1); | |
798 | object->max_reportid = reportid; | |
799 | } | |
800 | } | |
801 | ||
802 | return 0; | |
803 | } | |
804 | ||
7686b108 | 805 | static int mxt_initialize(struct mxt_data *data) |
4cf51c38 JS |
806 | { |
807 | struct i2c_client *client = data->client; | |
7686b108 | 808 | struct mxt_info *info = &data->info; |
4cf51c38 JS |
809 | int error; |
810 | u8 val; | |
811 | ||
7686b108 | 812 | error = mxt_get_info(data); |
4cf51c38 JS |
813 | if (error) |
814 | return error; | |
815 | ||
816 | data->object_table = kcalloc(info->object_num, | |
7686b108 | 817 | sizeof(struct mxt_object), |
4cf51c38 JS |
818 | GFP_KERNEL); |
819 | if (!data->object_table) { | |
820 | dev_err(&client->dev, "Failed to allocate memory\n"); | |
821 | return -ENOMEM; | |
822 | } | |
823 | ||
824 | /* Get object table information */ | |
7686b108 | 825 | error = mxt_get_object_table(data); |
4cf51c38 JS |
826 | if (error) |
827 | return error; | |
828 | ||
829 | /* Check register init values */ | |
7686b108 | 830 | error = mxt_check_reg_init(data); |
4cf51c38 JS |
831 | if (error) |
832 | return error; | |
833 | ||
7686b108 | 834 | mxt_handle_pdata(data); |
4cf51c38 JS |
835 | |
836 | /* Backup to memory */ | |
81c88a71 | 837 | mxt_write_object(data, MXT_GEN_COMMAND_T6, |
7686b108 IV |
838 | MXT_COMMAND_BACKUPNV, |
839 | MXT_BACKUP_VALUE); | |
840 | msleep(MXT_BACKUP_TIME); | |
4cf51c38 JS |
841 | |
842 | /* Soft reset */ | |
81c88a71 | 843 | mxt_write_object(data, MXT_GEN_COMMAND_T6, |
7686b108 IV |
844 | MXT_COMMAND_RESET, 1); |
845 | msleep(MXT_RESET_TIME); | |
4cf51c38 JS |
846 | |
847 | /* Update matrix size at info struct */ | |
7686b108 | 848 | error = mxt_read_reg(client, MXT_MATRIX_X_SIZE, &val); |
4cf51c38 JS |
849 | if (error) |
850 | return error; | |
851 | info->matrix_xsize = val; | |
852 | ||
7686b108 | 853 | error = mxt_read_reg(client, MXT_MATRIX_Y_SIZE, &val); |
4cf51c38 JS |
854 | if (error) |
855 | return error; | |
856 | info->matrix_ysize = val; | |
857 | ||
858 | dev_info(&client->dev, | |
e0e0269f DK |
859 | "Family ID: %u Variant ID: %u Major.Minor.Build: %u.%u.%02X\n", |
860 | info->family_id, info->variant_id, info->version >> 4, | |
861 | info->version & 0xf, info->build); | |
4cf51c38 JS |
862 | |
863 | dev_info(&client->dev, | |
e0e0269f | 864 | "Matrix X Size: %u Matrix Y Size: %u Object Num: %u\n", |
4cf51c38 JS |
865 | info->matrix_xsize, info->matrix_ysize, |
866 | info->object_num); | |
867 | ||
868 | return 0; | |
869 | } | |
870 | ||
910d8051 JS |
871 | static void mxt_calc_resolution(struct mxt_data *data) |
872 | { | |
873 | unsigned int max_x = data->pdata->x_size - 1; | |
874 | unsigned int max_y = data->pdata->y_size - 1; | |
875 | ||
876 | if (data->pdata->orient & MXT_XY_SWITCH) { | |
877 | data->max_x = max_y; | |
878 | data->max_y = max_x; | |
879 | } else { | |
880 | data->max_x = max_x; | |
881 | data->max_y = max_y; | |
882 | } | |
883 | } | |
884 | ||
794eb67e DK |
885 | static ssize_t mxt_show_instance(char *buf, int count, |
886 | struct mxt_object *object, int instance, | |
887 | const u8 *val) | |
888 | { | |
889 | int i; | |
890 | ||
891 | if (object->instances > 0) | |
892 | count += scnprintf(buf + count, PAGE_SIZE - count, | |
893 | "Instance %u\n", instance); | |
894 | ||
895 | for (i = 0; i < object->size + 1; i++) | |
896 | count += scnprintf(buf + count, PAGE_SIZE - count, | |
897 | "\t[%2u]: %02x (%d)\n", i, val[i], val[i]); | |
898 | count += scnprintf(buf + count, PAGE_SIZE - count, "\n"); | |
899 | ||
900 | return count; | |
901 | } | |
902 | ||
7686b108 | 903 | static ssize_t mxt_object_show(struct device *dev, |
4cf51c38 JS |
904 | struct device_attribute *attr, char *buf) |
905 | { | |
7686b108 IV |
906 | struct mxt_data *data = dev_get_drvdata(dev); |
907 | struct mxt_object *object; | |
4cf51c38 JS |
908 | int count = 0; |
909 | int i, j; | |
910 | int error; | |
43a91d51 DK |
911 | u8 *obuf; |
912 | ||
913 | /* Pre-allocate buffer large enough to hold max sized object. */ | |
914 | obuf = kmalloc(256, GFP_KERNEL); | |
915 | if (!obuf) | |
916 | return -ENOMEM; | |
4cf51c38 | 917 | |
43a91d51 | 918 | error = 0; |
4cf51c38 JS |
919 | for (i = 0; i < data->info.object_num; i++) { |
920 | object = data->object_table + i; | |
921 | ||
91630955 | 922 | if (!mxt_object_readable(object->type)) |
4cf51c38 | 923 | continue; |
91630955 DK |
924 | |
925 | count += scnprintf(buf + count, PAGE_SIZE - count, | |
926 | "T%u:\n", object->type); | |
4cf51c38 | 927 | |
794eb67e DK |
928 | for (j = 0; j < object->instances + 1; j++) { |
929 | u16 size = object->size + 1; | |
930 | u16 addr = object->start_address + j * size; | |
43a91d51 | 931 | |
794eb67e DK |
932 | error = __mxt_read_reg(data->client, addr, size, obuf); |
933 | if (error) | |
934 | goto done; | |
4cf51c38 | 935 | |
794eb67e | 936 | count = mxt_show_instance(buf, count, object, j, obuf); |
4cf51c38 | 937 | } |
4cf51c38 JS |
938 | } |
939 | ||
794eb67e | 940 | done: |
43a91d51 DK |
941 | kfree(obuf); |
942 | return error ?: count; | |
4cf51c38 JS |
943 | } |
944 | ||
7686b108 | 945 | static int mxt_load_fw(struct device *dev, const char *fn) |
4cf51c38 | 946 | { |
7686b108 | 947 | struct mxt_data *data = dev_get_drvdata(dev); |
4cf51c38 JS |
948 | struct i2c_client *client = data->client; |
949 | const struct firmware *fw = NULL; | |
950 | unsigned int frame_size; | |
951 | unsigned int pos = 0; | |
952 | int ret; | |
953 | ||
954 | ret = request_firmware(&fw, fn, dev); | |
955 | if (ret) { | |
956 | dev_err(dev, "Unable to open firmware %s\n", fn); | |
957 | return ret; | |
958 | } | |
959 | ||
960 | /* Change to the bootloader mode */ | |
81c88a71 | 961 | mxt_write_object(data, MXT_GEN_COMMAND_T6, |
7686b108 IV |
962 | MXT_COMMAND_RESET, MXT_BOOT_VALUE); |
963 | msleep(MXT_RESET_TIME); | |
4cf51c38 JS |
964 | |
965 | /* Change to slave address of bootloader */ | |
7686b108 IV |
966 | if (client->addr == MXT_APP_LOW) |
967 | client->addr = MXT_BOOT_LOW; | |
4cf51c38 | 968 | else |
7686b108 | 969 | client->addr = MXT_BOOT_HIGH; |
4cf51c38 | 970 | |
7686b108 | 971 | ret = mxt_check_bootloader(client, MXT_WAITING_BOOTLOAD_CMD); |
4cf51c38 JS |
972 | if (ret) |
973 | goto out; | |
974 | ||
975 | /* Unlock bootloader */ | |
7686b108 | 976 | mxt_unlock_bootloader(client); |
4cf51c38 JS |
977 | |
978 | while (pos < fw->size) { | |
7686b108 IV |
979 | ret = mxt_check_bootloader(client, |
980 | MXT_WAITING_FRAME_DATA); | |
4cf51c38 JS |
981 | if (ret) |
982 | goto out; | |
983 | ||
984 | frame_size = ((*(fw->data + pos) << 8) | *(fw->data + pos + 1)); | |
985 | ||
986 | /* We should add 2 at frame size as the the firmware data is not | |
987 | * included the CRC bytes. | |
988 | */ | |
989 | frame_size += 2; | |
990 | ||
991 | /* Write one frame to device */ | |
7686b108 | 992 | mxt_fw_write(client, fw->data + pos, frame_size); |
4cf51c38 | 993 | |
7686b108 IV |
994 | ret = mxt_check_bootloader(client, |
995 | MXT_FRAME_CRC_PASS); | |
4cf51c38 JS |
996 | if (ret) |
997 | goto out; | |
998 | ||
999 | pos += frame_size; | |
1000 | ||
1001 | dev_dbg(dev, "Updated %d bytes / %zd bytes\n", pos, fw->size); | |
1002 | } | |
1003 | ||
1004 | out: | |
1005 | release_firmware(fw); | |
1006 | ||
1007 | /* Change to slave address of application */ | |
7686b108 IV |
1008 | if (client->addr == MXT_BOOT_LOW) |
1009 | client->addr = MXT_APP_LOW; | |
4cf51c38 | 1010 | else |
7686b108 | 1011 | client->addr = MXT_APP_HIGH; |
4cf51c38 JS |
1012 | |
1013 | return ret; | |
1014 | } | |
1015 | ||
7686b108 | 1016 | static ssize_t mxt_update_fw_store(struct device *dev, |
4cf51c38 JS |
1017 | struct device_attribute *attr, |
1018 | const char *buf, size_t count) | |
1019 | { | |
7686b108 | 1020 | struct mxt_data *data = dev_get_drvdata(dev); |
4cf51c38 JS |
1021 | int error; |
1022 | ||
4cf51c38 JS |
1023 | disable_irq(data->irq); |
1024 | ||
7686b108 | 1025 | error = mxt_load_fw(dev, MXT_FW_NAME); |
4cf51c38 JS |
1026 | if (error) { |
1027 | dev_err(dev, "The firmware update failed(%d)\n", error); | |
1028 | count = error; | |
1029 | } else { | |
1030 | dev_dbg(dev, "The firmware update succeeded\n"); | |
1031 | ||
1032 | /* Wait for reset */ | |
7686b108 | 1033 | msleep(MXT_FWRESET_TIME); |
4cf51c38 JS |
1034 | |
1035 | kfree(data->object_table); | |
1036 | data->object_table = NULL; | |
1037 | ||
7686b108 | 1038 | mxt_initialize(data); |
4cf51c38 JS |
1039 | } |
1040 | ||
1041 | enable_irq(data->irq); | |
1042 | ||
08960a07 IV |
1043 | error = mxt_make_highchg(data); |
1044 | if (error) | |
1045 | return error; | |
1046 | ||
4cf51c38 JS |
1047 | return count; |
1048 | } | |
1049 | ||
71b3e938 DK |
1050 | static DEVICE_ATTR(object, S_IRUGO, mxt_object_show, NULL); |
1051 | static DEVICE_ATTR(update_fw, S_IWUSR, NULL, mxt_update_fw_store); | |
4cf51c38 | 1052 | |
7686b108 | 1053 | static struct attribute *mxt_attrs[] = { |
4cf51c38 JS |
1054 | &dev_attr_object.attr, |
1055 | &dev_attr_update_fw.attr, | |
1056 | NULL | |
1057 | }; | |
1058 | ||
7686b108 IV |
1059 | static const struct attribute_group mxt_attr_group = { |
1060 | .attrs = mxt_attrs, | |
4cf51c38 JS |
1061 | }; |
1062 | ||
7686b108 | 1063 | static void mxt_start(struct mxt_data *data) |
4cf51c38 JS |
1064 | { |
1065 | /* Touch enable */ | |
7686b108 | 1066 | mxt_write_object(data, |
81c88a71 | 1067 | MXT_TOUCH_MULTI_T9, MXT_TOUCH_CTRL, 0x83); |
4cf51c38 JS |
1068 | } |
1069 | ||
7686b108 | 1070 | static void mxt_stop(struct mxt_data *data) |
4cf51c38 JS |
1071 | { |
1072 | /* Touch disable */ | |
7686b108 | 1073 | mxt_write_object(data, |
81c88a71 | 1074 | MXT_TOUCH_MULTI_T9, MXT_TOUCH_CTRL, 0); |
4cf51c38 JS |
1075 | } |
1076 | ||
7686b108 | 1077 | static int mxt_input_open(struct input_dev *dev) |
4cf51c38 | 1078 | { |
7686b108 | 1079 | struct mxt_data *data = input_get_drvdata(dev); |
4cf51c38 | 1080 | |
7686b108 | 1081 | mxt_start(data); |
4cf51c38 JS |
1082 | |
1083 | return 0; | |
1084 | } | |
1085 | ||
7686b108 | 1086 | static void mxt_input_close(struct input_dev *dev) |
4cf51c38 | 1087 | { |
7686b108 | 1088 | struct mxt_data *data = input_get_drvdata(dev); |
4cf51c38 | 1089 | |
7686b108 | 1090 | mxt_stop(data); |
4cf51c38 JS |
1091 | } |
1092 | ||
7686b108 | 1093 | static int __devinit mxt_probe(struct i2c_client *client, |
4cf51c38 JS |
1094 | const struct i2c_device_id *id) |
1095 | { | |
919ed895 | 1096 | const struct mxt_platform_data *pdata = client->dev.platform_data; |
7686b108 | 1097 | struct mxt_data *data; |
4cf51c38 JS |
1098 | struct input_dev *input_dev; |
1099 | int error; | |
1100 | ||
919ed895 | 1101 | if (!pdata) |
4cf51c38 JS |
1102 | return -EINVAL; |
1103 | ||
7686b108 | 1104 | data = kzalloc(sizeof(struct mxt_data), GFP_KERNEL); |
4cf51c38 JS |
1105 | input_dev = input_allocate_device(); |
1106 | if (!data || !input_dev) { | |
1107 | dev_err(&client->dev, "Failed to allocate memory\n"); | |
1108 | error = -ENOMEM; | |
1109 | goto err_free_mem; | |
1110 | } | |
1111 | ||
7686b108 | 1112 | input_dev->name = "Atmel maXTouch Touchscreen"; |
ec02ac2b DK |
1113 | snprintf(data->phys, sizeof(data->phys), "i2c-%u-%04x/input0", |
1114 | client->adapter->nr, client->addr); | |
1115 | input_dev->phys = data->phys; | |
1116 | ||
4cf51c38 JS |
1117 | input_dev->id.bustype = BUS_I2C; |
1118 | input_dev->dev.parent = &client->dev; | |
7686b108 IV |
1119 | input_dev->open = mxt_input_open; |
1120 | input_dev->close = mxt_input_close; | |
4cf51c38 | 1121 | |
910d8051 JS |
1122 | data->client = client; |
1123 | data->input_dev = input_dev; | |
1124 | data->pdata = pdata; | |
1125 | data->irq = client->irq; | |
1126 | ||
1127 | mxt_calc_resolution(data); | |
1128 | ||
4cf51c38 JS |
1129 | __set_bit(EV_ABS, input_dev->evbit); |
1130 | __set_bit(EV_KEY, input_dev->evbit); | |
1131 | __set_bit(BTN_TOUCH, input_dev->keybit); | |
1132 | ||
1133 | /* For single touch */ | |
1134 | input_set_abs_params(input_dev, ABS_X, | |
910d8051 | 1135 | 0, data->max_x, 0, 0); |
4cf51c38 | 1136 | input_set_abs_params(input_dev, ABS_Y, |
910d8051 | 1137 | 0, data->max_y, 0, 0); |
28ac2933 YS |
1138 | input_set_abs_params(input_dev, ABS_PRESSURE, |
1139 | 0, 255, 0, 0); | |
4cf51c38 JS |
1140 | |
1141 | /* For multi touch */ | |
e1e1658d DK |
1142 | error = input_mt_init_slots(input_dev, MXT_MAX_FINGER); |
1143 | if (error) | |
1144 | goto err_free_mem; | |
4cf51c38 | 1145 | input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR, |
7686b108 | 1146 | 0, MXT_MAX_AREA, 0, 0); |
4cf51c38 | 1147 | input_set_abs_params(input_dev, ABS_MT_POSITION_X, |
910d8051 | 1148 | 0, data->max_x, 0, 0); |
4cf51c38 | 1149 | input_set_abs_params(input_dev, ABS_MT_POSITION_Y, |
910d8051 | 1150 | 0, data->max_y, 0, 0); |
28ac2933 YS |
1151 | input_set_abs_params(input_dev, ABS_MT_PRESSURE, |
1152 | 0, 255, 0, 0); | |
4cf51c38 JS |
1153 | |
1154 | input_set_drvdata(input_dev, data); | |
4cf51c38 JS |
1155 | i2c_set_clientdata(client, data); |
1156 | ||
7686b108 | 1157 | error = mxt_initialize(data); |
4cf51c38 JS |
1158 | if (error) |
1159 | goto err_free_object; | |
1160 | ||
7686b108 | 1161 | error = request_threaded_irq(client->irq, NULL, mxt_interrupt, |
c2ef9a1a | 1162 | pdata->irqflags, client->name, data); |
4cf51c38 JS |
1163 | if (error) { |
1164 | dev_err(&client->dev, "Failed to register interrupt\n"); | |
1165 | goto err_free_object; | |
1166 | } | |
1167 | ||
08960a07 IV |
1168 | error = mxt_make_highchg(data); |
1169 | if (error) | |
1170 | goto err_free_irq; | |
1171 | ||
4cf51c38 JS |
1172 | error = input_register_device(input_dev); |
1173 | if (error) | |
1174 | goto err_free_irq; | |
1175 | ||
7686b108 | 1176 | error = sysfs_create_group(&client->dev.kobj, &mxt_attr_group); |
4cf51c38 | 1177 | if (error) |
63990038 | 1178 | dev_warn(&client->dev, "error creating sysfs entries.\n"); |
4cf51c38 JS |
1179 | |
1180 | return 0; | |
1181 | ||
4cf51c38 JS |
1182 | err_free_irq: |
1183 | free_irq(client->irq, data); | |
1184 | err_free_object: | |
1185 | kfree(data->object_table); | |
1186 | err_free_mem: | |
1187 | input_free_device(input_dev); | |
1188 | kfree(data); | |
1189 | return error; | |
1190 | } | |
1191 | ||
7686b108 | 1192 | static int __devexit mxt_remove(struct i2c_client *client) |
4cf51c38 | 1193 | { |
7686b108 | 1194 | struct mxt_data *data = i2c_get_clientdata(client); |
4cf51c38 | 1195 | |
7686b108 | 1196 | sysfs_remove_group(&client->dev.kobj, &mxt_attr_group); |
4cf51c38 JS |
1197 | free_irq(data->irq, data); |
1198 | input_unregister_device(data->input_dev); | |
1199 | kfree(data->object_table); | |
1200 | kfree(data); | |
1201 | ||
1202 | return 0; | |
1203 | } | |
1204 | ||
3a73c816 | 1205 | #ifdef CONFIG_PM_SLEEP |
7686b108 | 1206 | static int mxt_suspend(struct device *dev) |
4cf51c38 | 1207 | { |
8b5fce06 | 1208 | struct i2c_client *client = to_i2c_client(dev); |
7686b108 | 1209 | struct mxt_data *data = i2c_get_clientdata(client); |
4cf51c38 JS |
1210 | struct input_dev *input_dev = data->input_dev; |
1211 | ||
1212 | mutex_lock(&input_dev->mutex); | |
1213 | ||
1214 | if (input_dev->users) | |
7686b108 | 1215 | mxt_stop(data); |
4cf51c38 JS |
1216 | |
1217 | mutex_unlock(&input_dev->mutex); | |
1218 | ||
1219 | return 0; | |
1220 | } | |
1221 | ||
7686b108 | 1222 | static int mxt_resume(struct device *dev) |
4cf51c38 | 1223 | { |
8b5fce06 | 1224 | struct i2c_client *client = to_i2c_client(dev); |
7686b108 | 1225 | struct mxt_data *data = i2c_get_clientdata(client); |
4cf51c38 JS |
1226 | struct input_dev *input_dev = data->input_dev; |
1227 | ||
1228 | /* Soft reset */ | |
81c88a71 | 1229 | mxt_write_object(data, MXT_GEN_COMMAND_T6, |
7686b108 | 1230 | MXT_COMMAND_RESET, 1); |
4cf51c38 | 1231 | |
7686b108 | 1232 | msleep(MXT_RESET_TIME); |
4cf51c38 JS |
1233 | |
1234 | mutex_lock(&input_dev->mutex); | |
1235 | ||
1236 | if (input_dev->users) | |
7686b108 | 1237 | mxt_start(data); |
4cf51c38 JS |
1238 | |
1239 | mutex_unlock(&input_dev->mutex); | |
1240 | ||
1241 | return 0; | |
1242 | } | |
4cf51c38 JS |
1243 | #endif |
1244 | ||
3a73c816 DK |
1245 | static SIMPLE_DEV_PM_OPS(mxt_pm_ops, mxt_suspend, mxt_resume); |
1246 | ||
7686b108 | 1247 | static const struct i2c_device_id mxt_id[] = { |
4cf51c38 | 1248 | { "qt602240_ts", 0 }, |
7686b108 | 1249 | { "atmel_mxt_ts", 0 }, |
46ee2a05 | 1250 | { "mXT224", 0 }, |
4cf51c38 JS |
1251 | { } |
1252 | }; | |
7686b108 | 1253 | MODULE_DEVICE_TABLE(i2c, mxt_id); |
4cf51c38 | 1254 | |
7686b108 | 1255 | static struct i2c_driver mxt_driver = { |
4cf51c38 | 1256 | .driver = { |
7686b108 | 1257 | .name = "atmel_mxt_ts", |
4cf51c38 | 1258 | .owner = THIS_MODULE, |
7686b108 | 1259 | .pm = &mxt_pm_ops, |
4cf51c38 | 1260 | }, |
7686b108 IV |
1261 | .probe = mxt_probe, |
1262 | .remove = __devexit_p(mxt_remove), | |
1263 | .id_table = mxt_id, | |
4cf51c38 JS |
1264 | }; |
1265 | ||
1b92c1cf | 1266 | module_i2c_driver(mxt_driver); |
4cf51c38 JS |
1267 | |
1268 | /* Module information */ | |
1269 | MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>"); | |
7686b108 | 1270 | MODULE_DESCRIPTION("Atmel maXTouch Touchscreen driver"); |
4cf51c38 | 1271 | MODULE_LICENSE("GPL"); |