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 */ | |
b2e459b8 | 198 | #define MXT_UNGRIP (1 << 0) |
7686b108 IV |
199 | #define MXT_SUPPRESS (1 << 1) |
200 | #define MXT_AMP (1 << 2) | |
201 | #define MXT_VECTOR (1 << 3) | |
202 | #define MXT_MOVE (1 << 4) | |
203 | #define MXT_RELEASE (1 << 5) | |
204 | #define MXT_PRESS (1 << 6) | |
205 | #define MXT_DETECT (1 << 7) | |
4cf51c38 | 206 | |
910d8051 JS |
207 | /* Touch orient bits */ |
208 | #define MXT_XY_SWITCH (1 << 0) | |
209 | #define MXT_X_INVERT (1 << 1) | |
210 | #define MXT_Y_INVERT (1 << 2) | |
211 | ||
4cf51c38 | 212 | /* Touchscreen absolute values */ |
7686b108 | 213 | #define MXT_MAX_AREA 0xff |
4cf51c38 | 214 | |
7686b108 | 215 | struct mxt_info { |
4cf51c38 JS |
216 | u8 family_id; |
217 | u8 variant_id; | |
218 | u8 version; | |
219 | u8 build; | |
220 | u8 matrix_xsize; | |
221 | u8 matrix_ysize; | |
222 | u8 object_num; | |
223 | }; | |
224 | ||
7686b108 | 225 | struct mxt_object { |
4cf51c38 JS |
226 | u8 type; |
227 | u16 start_address; | |
333e5a9a DK |
228 | u8 size; /* Size of each instance - 1 */ |
229 | u8 instances; /* Number of instances - 1 */ | |
4cf51c38 | 230 | u8 num_report_ids; |
333e5a9a | 231 | } __packed; |
4cf51c38 | 232 | |
7686b108 | 233 | struct mxt_message { |
4cf51c38 JS |
234 | u8 reportid; |
235 | u8 message[7]; | |
4cf51c38 JS |
236 | }; |
237 | ||
4cf51c38 | 238 | /* Each client has this additional data */ |
7686b108 | 239 | struct mxt_data { |
4cf51c38 JS |
240 | struct i2c_client *client; |
241 | struct input_dev *input_dev; | |
ec02ac2b | 242 | char phys[64]; /* device physical location */ |
7686b108 IV |
243 | const struct mxt_platform_data *pdata; |
244 | struct mxt_object *object_table; | |
245 | struct mxt_info info; | |
4cf51c38 | 246 | unsigned int irq; |
910d8051 JS |
247 | unsigned int max_x; |
248 | unsigned int max_y; | |
333e5a9a DK |
249 | |
250 | /* Cached parameters from object table */ | |
fdf80421 | 251 | u8 T6_reportid; |
333e5a9a DK |
252 | u8 T9_reportid_min; |
253 | u8 T9_reportid_max; | |
4cf51c38 JS |
254 | }; |
255 | ||
7686b108 | 256 | static bool mxt_object_readable(unsigned int type) |
4cf51c38 JS |
257 | { |
258 | switch (type) { | |
81c88a71 IV |
259 | case MXT_GEN_COMMAND_T6: |
260 | case MXT_GEN_POWER_T7: | |
261 | case MXT_GEN_ACQUIRE_T8: | |
262 | case MXT_GEN_DATASOURCE_T53: | |
263 | case MXT_TOUCH_MULTI_T9: | |
264 | case MXT_TOUCH_KEYARRAY_T15: | |
265 | case MXT_TOUCH_PROXIMITY_T23: | |
266 | case MXT_TOUCH_PROXKEY_T52: | |
267 | case MXT_PROCI_GRIPFACE_T20: | |
268 | case MXT_PROCG_NOISE_T22: | |
269 | case MXT_PROCI_ONETOUCH_T24: | |
270 | case MXT_PROCI_TWOTOUCH_T27: | |
271 | case MXT_PROCI_GRIP_T40: | |
272 | case MXT_PROCI_PALM_T41: | |
273 | case MXT_PROCI_TOUCHSUPPRESSION_T42: | |
274 | case MXT_PROCI_STYLUS_T47: | |
275 | case MXT_PROCG_NOISESUPPRESSION_T48: | |
276 | case MXT_SPT_COMMSCONFIG_T18: | |
277 | case MXT_SPT_GPIOPWM_T19: | |
278 | case MXT_SPT_SELFTEST_T25: | |
279 | case MXT_SPT_CTECONFIG_T28: | |
280 | case MXT_SPT_USERDATA_T38: | |
281 | case MXT_SPT_DIGITIZER_T43: | |
282 | case MXT_SPT_CTECONFIG_T46: | |
4cf51c38 JS |
283 | return true; |
284 | default: | |
285 | return false; | |
286 | } | |
287 | } | |
288 | ||
7686b108 | 289 | static bool mxt_object_writable(unsigned int type) |
4cf51c38 JS |
290 | { |
291 | switch (type) { | |
81c88a71 IV |
292 | case MXT_GEN_COMMAND_T6: |
293 | case MXT_GEN_POWER_T7: | |
294 | case MXT_GEN_ACQUIRE_T8: | |
295 | case MXT_TOUCH_MULTI_T9: | |
296 | case MXT_TOUCH_KEYARRAY_T15: | |
297 | case MXT_TOUCH_PROXIMITY_T23: | |
298 | case MXT_TOUCH_PROXKEY_T52: | |
299 | case MXT_PROCI_GRIPFACE_T20: | |
300 | case MXT_PROCG_NOISE_T22: | |
301 | case MXT_PROCI_ONETOUCH_T24: | |
302 | case MXT_PROCI_TWOTOUCH_T27: | |
303 | case MXT_PROCI_GRIP_T40: | |
304 | case MXT_PROCI_PALM_T41: | |
305 | case MXT_PROCI_TOUCHSUPPRESSION_T42: | |
306 | case MXT_PROCI_STYLUS_T47: | |
307 | case MXT_PROCG_NOISESUPPRESSION_T48: | |
308 | case MXT_SPT_COMMSCONFIG_T18: | |
309 | case MXT_SPT_GPIOPWM_T19: | |
310 | case MXT_SPT_SELFTEST_T25: | |
311 | case MXT_SPT_CTECONFIG_T28: | |
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 void mxt_dump_message(struct device *dev, |
6ee3dbf9 | 321 | struct mxt_message *message) |
4cf51c38 | 322 | { |
6ee3dbf9 DK |
323 | dev_dbg(dev, "reportid: %u\tmessage: %02x %02x %02x %02x %02x %02x %02x\n", |
324 | message->reportid, message->message[0], message->message[1], | |
325 | message->message[2], message->message[3], message->message[4], | |
326 | message->message[5], message->message[6]); | |
4cf51c38 JS |
327 | } |
328 | ||
7686b108 | 329 | static int mxt_check_bootloader(struct i2c_client *client, |
4cf51c38 JS |
330 | unsigned int state) |
331 | { | |
332 | u8 val; | |
333 | ||
334 | recheck: | |
335 | if (i2c_master_recv(client, &val, 1) != 1) { | |
336 | dev_err(&client->dev, "%s: i2c recv failed\n", __func__); | |
337 | return -EIO; | |
338 | } | |
339 | ||
340 | switch (state) { | |
7686b108 IV |
341 | case MXT_WAITING_BOOTLOAD_CMD: |
342 | case MXT_WAITING_FRAME_DATA: | |
343 | val &= ~MXT_BOOT_STATUS_MASK; | |
4cf51c38 | 344 | break; |
7686b108 IV |
345 | case MXT_FRAME_CRC_PASS: |
346 | if (val == MXT_FRAME_CRC_CHECK) | |
4cf51c38 JS |
347 | goto recheck; |
348 | break; | |
349 | default: | |
350 | return -EINVAL; | |
351 | } | |
352 | ||
353 | if (val != state) { | |
354 | dev_err(&client->dev, "Unvalid bootloader mode state\n"); | |
355 | return -EINVAL; | |
356 | } | |
357 | ||
358 | return 0; | |
359 | } | |
360 | ||
7686b108 | 361 | static int mxt_unlock_bootloader(struct i2c_client *client) |
4cf51c38 JS |
362 | { |
363 | u8 buf[2]; | |
364 | ||
7686b108 IV |
365 | buf[0] = MXT_UNLOCK_CMD_LSB; |
366 | buf[1] = MXT_UNLOCK_CMD_MSB; | |
4cf51c38 JS |
367 | |
368 | if (i2c_master_send(client, buf, 2) != 2) { | |
369 | dev_err(&client->dev, "%s: i2c send failed\n", __func__); | |
370 | return -EIO; | |
371 | } | |
372 | ||
373 | return 0; | |
374 | } | |
375 | ||
7686b108 | 376 | static int mxt_fw_write(struct i2c_client *client, |
4cf51c38 JS |
377 | const u8 *data, unsigned int frame_size) |
378 | { | |
379 | if (i2c_master_send(client, data, frame_size) != frame_size) { | |
380 | dev_err(&client->dev, "%s: i2c send failed\n", __func__); | |
381 | return -EIO; | |
382 | } | |
383 | ||
384 | return 0; | |
385 | } | |
386 | ||
7686b108 | 387 | static int __mxt_read_reg(struct i2c_client *client, |
4cf51c38 JS |
388 | u16 reg, u16 len, void *val) |
389 | { | |
390 | struct i2c_msg xfer[2]; | |
391 | u8 buf[2]; | |
771733e3 | 392 | int ret; |
4cf51c38 JS |
393 | |
394 | buf[0] = reg & 0xff; | |
395 | buf[1] = (reg >> 8) & 0xff; | |
396 | ||
397 | /* Write register */ | |
398 | xfer[0].addr = client->addr; | |
399 | xfer[0].flags = 0; | |
400 | xfer[0].len = 2; | |
401 | xfer[0].buf = buf; | |
402 | ||
403 | /* Read data */ | |
404 | xfer[1].addr = client->addr; | |
405 | xfer[1].flags = I2C_M_RD; | |
406 | xfer[1].len = len; | |
407 | xfer[1].buf = val; | |
408 | ||
771733e3 DK |
409 | ret = i2c_transfer(client->adapter, xfer, 2); |
410 | if (ret == 2) { | |
411 | ret = 0; | |
412 | } else { | |
413 | if (ret >= 0) | |
414 | ret = -EIO; | |
415 | dev_err(&client->dev, "%s: i2c transfer failed (%d)\n", | |
416 | __func__, ret); | |
4cf51c38 JS |
417 | } |
418 | ||
771733e3 | 419 | return ret; |
4cf51c38 JS |
420 | } |
421 | ||
7686b108 | 422 | static int mxt_read_reg(struct i2c_client *client, u16 reg, u8 *val) |
4cf51c38 | 423 | { |
7686b108 | 424 | return __mxt_read_reg(client, reg, 1, val); |
4cf51c38 JS |
425 | } |
426 | ||
9638ab7c DK |
427 | static int __mxt_write_reg(struct i2c_client *client, u16 reg, u16 len, |
428 | const void *val) | |
4cf51c38 | 429 | { |
9638ab7c DK |
430 | u8 *buf; |
431 | size_t count; | |
771733e3 | 432 | int ret; |
4cf51c38 | 433 | |
9638ab7c DK |
434 | count = len + 2; |
435 | buf = kmalloc(count, GFP_KERNEL); | |
436 | if (!buf) | |
437 | return -ENOMEM; | |
4cf51c38 JS |
438 | |
439 | buf[0] = reg & 0xff; | |
440 | buf[1] = (reg >> 8) & 0xff; | |
9638ab7c | 441 | memcpy(&buf[2], val, len); |
4cf51c38 | 442 | |
9638ab7c DK |
443 | ret = i2c_master_send(client, buf, count); |
444 | if (ret == count) { | |
771733e3 DK |
445 | ret = 0; |
446 | } else { | |
447 | if (ret >= 0) | |
448 | ret = -EIO; | |
449 | dev_err(&client->dev, "%s: i2c send failed (%d)\n", | |
450 | __func__, ret); | |
4cf51c38 JS |
451 | } |
452 | ||
9638ab7c | 453 | kfree(buf); |
771733e3 | 454 | return ret; |
4cf51c38 JS |
455 | } |
456 | ||
9638ab7c | 457 | static int mxt_write_reg(struct i2c_client *client, u16 reg, u8 val) |
4cf51c38 | 458 | { |
9638ab7c | 459 | return __mxt_write_reg(client, reg, 1, &val); |
4cf51c38 JS |
460 | } |
461 | ||
7686b108 IV |
462 | static struct mxt_object * |
463 | mxt_get_object(struct mxt_data *data, u8 type) | |
4cf51c38 | 464 | { |
7686b108 | 465 | struct mxt_object *object; |
4cf51c38 JS |
466 | int i; |
467 | ||
468 | for (i = 0; i < data->info.object_num; i++) { | |
469 | object = data->object_table + i; | |
470 | if (object->type == type) | |
471 | return object; | |
472 | } | |
473 | ||
474 | dev_err(&data->client->dev, "Invalid object type\n"); | |
475 | return NULL; | |
476 | } | |
477 | ||
7686b108 IV |
478 | static int mxt_read_message(struct mxt_data *data, |
479 | struct mxt_message *message) | |
4cf51c38 | 480 | { |
7686b108 | 481 | struct mxt_object *object; |
4cf51c38 JS |
482 | u16 reg; |
483 | ||
81c88a71 | 484 | object = mxt_get_object(data, MXT_GEN_MESSAGE_T5); |
4cf51c38 JS |
485 | if (!object) |
486 | return -EINVAL; | |
487 | ||
488 | reg = object->start_address; | |
7686b108 IV |
489 | return __mxt_read_reg(data->client, reg, |
490 | sizeof(struct mxt_message), message); | |
4cf51c38 JS |
491 | } |
492 | ||
7686b108 | 493 | static int mxt_write_object(struct mxt_data *data, |
4cf51c38 JS |
494 | u8 type, u8 offset, u8 val) |
495 | { | |
7686b108 | 496 | struct mxt_object *object; |
4cf51c38 JS |
497 | u16 reg; |
498 | ||
7686b108 | 499 | object = mxt_get_object(data, type); |
d1ff320f | 500 | if (!object || offset >= object->size + 1) |
4cf51c38 JS |
501 | return -EINVAL; |
502 | ||
503 | reg = object->start_address; | |
7686b108 | 504 | return mxt_write_reg(data->client, reg + offset, val); |
4cf51c38 JS |
505 | } |
506 | ||
7686b108 IV |
507 | static void mxt_input_touchevent(struct mxt_data *data, |
508 | struct mxt_message *message, int id) | |
4cf51c38 | 509 | { |
4cf51c38 JS |
510 | struct device *dev = &data->client->dev; |
511 | u8 status = message->message[0]; | |
fba5bc31 | 512 | struct input_dev *input_dev = data->input_dev; |
4cf51c38 JS |
513 | int x; |
514 | int y; | |
515 | int area; | |
28ac2933 | 516 | int pressure; |
4cf51c38 | 517 | |
910d8051 JS |
518 | x = (message->message[1] << 4) | ((message->message[3] >> 4) & 0xf); |
519 | y = (message->message[2] << 4) | ((message->message[3] & 0xf)); | |
520 | if (data->max_x < 1024) | |
521 | x = x >> 2; | |
522 | if (data->max_y < 1024) | |
523 | y = y >> 2; | |
524 | ||
4cf51c38 | 525 | area = message->message[4]; |
28ac2933 | 526 | pressure = message->message[5]; |
4cf51c38 | 527 | |
b2e459b8 DK |
528 | dev_dbg(dev, |
529 | "[%u] %c%c%c%c%c%c%c%c x: %5u y: %5u area: %3u amp: %3u\n", | |
530 | id, | |
531 | (status & MXT_DETECT) ? 'D' : '.', | |
532 | (status & MXT_PRESS) ? 'P' : '.', | |
533 | (status & MXT_RELEASE) ? 'R' : '.', | |
534 | (status & MXT_MOVE) ? 'M' : '.', | |
535 | (status & MXT_VECTOR) ? 'V' : '.', | |
536 | (status & MXT_AMP) ? 'A' : '.', | |
537 | (status & MXT_SUPPRESS) ? 'S' : '.', | |
538 | (status & MXT_UNGRIP) ? 'U' : '.', | |
539 | x, y, area, pressure); | |
540 | ||
fba5bc31 DK |
541 | input_mt_slot(input_dev, id); |
542 | input_mt_report_slot_state(input_dev, MT_TOOL_FINGER, | |
543 | status & MXT_DETECT); | |
544 | ||
545 | if (status & MXT_DETECT) { | |
546 | input_report_abs(input_dev, ABS_MT_POSITION_X, x); | |
547 | input_report_abs(input_dev, ABS_MT_POSITION_Y, y); | |
548 | input_report_abs(input_dev, ABS_MT_PRESSURE, pressure); | |
549 | input_report_abs(input_dev, ABS_MT_TOUCH_MAJOR, area); | |
550 | } | |
4cf51c38 | 551 | } |
4cf51c38 | 552 | |
fdf80421 DK |
553 | static unsigned mxt_extract_T6_csum(const u8 *csum) |
554 | { | |
555 | return csum[0] | (csum[1] << 8) | (csum[2] << 16); | |
556 | } | |
4cf51c38 | 557 | |
04a79181 DK |
558 | static bool mxt_is_T9_message(struct mxt_data *data, struct mxt_message *msg) |
559 | { | |
560 | u8 id = msg->reportid; | |
561 | return (id >= data->T9_reportid_min && id <= data->T9_reportid_max); | |
4cf51c38 JS |
562 | } |
563 | ||
7686b108 | 564 | static irqreturn_t mxt_interrupt(int irq, void *dev_id) |
4cf51c38 | 565 | { |
7686b108 IV |
566 | struct mxt_data *data = dev_id; |
567 | struct mxt_message message; | |
fdf80421 | 568 | const u8 *payload = &message.message[0]; |
4cf51c38 | 569 | struct device *dev = &data->client->dev; |
4cf51c38 | 570 | u8 reportid; |
64464ae8 | 571 | bool update_input = false; |
4cf51c38 JS |
572 | |
573 | do { | |
7686b108 | 574 | if (mxt_read_message(data, &message)) { |
4cf51c38 JS |
575 | dev_err(dev, "Failed to read message\n"); |
576 | goto end; | |
577 | } | |
578 | ||
579 | reportid = message.reportid; | |
580 | ||
fdf80421 DK |
581 | if (reportid == data->T6_reportid) { |
582 | u8 status = payload[0]; | |
583 | unsigned csum = mxt_extract_T6_csum(&payload[1]); | |
584 | dev_dbg(dev, "Status: %02x Config Checksum: %06x\n", | |
585 | status, csum); | |
586 | } else if (mxt_is_T9_message(data, &message)) { | |
587 | int id = reportid - data->T9_reportid_min; | |
7686b108 | 588 | mxt_input_touchevent(data, &message, id); |
64464ae8 DK |
589 | update_input = true; |
590 | } else { | |
7686b108 | 591 | mxt_dump_message(dev, &message); |
64464ae8 | 592 | } |
4cf51c38 JS |
593 | } while (reportid != 0xff); |
594 | ||
64464ae8 DK |
595 | if (update_input) { |
596 | input_mt_report_pointer_emulation(data->input_dev, false); | |
597 | input_sync(data->input_dev); | |
598 | } | |
599 | ||
4cf51c38 JS |
600 | end: |
601 | return IRQ_HANDLED; | |
602 | } | |
603 | ||
7686b108 | 604 | static int mxt_check_reg_init(struct mxt_data *data) |
4cf51c38 | 605 | { |
71749f5c | 606 | const struct mxt_platform_data *pdata = data->pdata; |
7686b108 | 607 | struct mxt_object *object; |
4cf51c38 JS |
608 | struct device *dev = &data->client->dev; |
609 | int index = 0; | |
cf94bc09 DK |
610 | int i, size; |
611 | int ret; | |
4cf51c38 | 612 | |
71749f5c IV |
613 | if (!pdata->config) { |
614 | dev_dbg(dev, "No cfg data defined, skipping reg init\n"); | |
615 | return 0; | |
4cf51c38 JS |
616 | } |
617 | ||
618 | for (i = 0; i < data->info.object_num; i++) { | |
619 | object = data->object_table + i; | |
620 | ||
7686b108 | 621 | if (!mxt_object_writable(object->type)) |
4cf51c38 JS |
622 | continue; |
623 | ||
cf94bc09 DK |
624 | size = (object->size + 1) * (object->instances + 1); |
625 | if (index + size > pdata->config_length) { | |
626 | dev_err(dev, "Not enough config data!\n"); | |
627 | return -EINVAL; | |
71749f5c | 628 | } |
cf94bc09 DK |
629 | |
630 | ret = __mxt_write_reg(data->client, object->start_address, | |
631 | size, &pdata->config[index]); | |
632 | if (ret) | |
633 | return ret; | |
634 | index += size; | |
4cf51c38 JS |
635 | } |
636 | ||
637 | return 0; | |
638 | } | |
639 | ||
7686b108 | 640 | static int mxt_make_highchg(struct mxt_data *data) |
4cf51c38 JS |
641 | { |
642 | struct device *dev = &data->client->dev; | |
26cdb1ae | 643 | struct mxt_message message; |
4cf51c38 JS |
644 | int count = 10; |
645 | int error; | |
4cf51c38 JS |
646 | |
647 | /* Read dummy message to make high CHG pin */ | |
648 | do { | |
26cdb1ae | 649 | error = mxt_read_message(data, &message); |
4cf51c38 JS |
650 | if (error) |
651 | return error; | |
26cdb1ae | 652 | } while (message.reportid != 0xff && --count); |
4cf51c38 JS |
653 | |
654 | if (!count) { | |
655 | dev_err(dev, "CHG pin isn't cleared\n"); | |
656 | return -EBUSY; | |
657 | } | |
658 | ||
659 | return 0; | |
660 | } | |
661 | ||
7686b108 | 662 | static void mxt_handle_pdata(struct mxt_data *data) |
4cf51c38 | 663 | { |
7686b108 | 664 | const struct mxt_platform_data *pdata = data->pdata; |
4cf51c38 JS |
665 | u8 voltage; |
666 | ||
667 | /* Set touchscreen lines */ | |
81c88a71 | 668 | mxt_write_object(data, MXT_TOUCH_MULTI_T9, MXT_TOUCH_XSIZE, |
4cf51c38 | 669 | pdata->x_line); |
81c88a71 | 670 | mxt_write_object(data, MXT_TOUCH_MULTI_T9, MXT_TOUCH_YSIZE, |
4cf51c38 JS |
671 | pdata->y_line); |
672 | ||
673 | /* Set touchscreen orient */ | |
81c88a71 | 674 | mxt_write_object(data, MXT_TOUCH_MULTI_T9, MXT_TOUCH_ORIENT, |
4cf51c38 JS |
675 | pdata->orient); |
676 | ||
677 | /* Set touchscreen burst length */ | |
81c88a71 | 678 | mxt_write_object(data, MXT_TOUCH_MULTI_T9, |
7686b108 | 679 | MXT_TOUCH_BLEN, pdata->blen); |
4cf51c38 JS |
680 | |
681 | /* Set touchscreen threshold */ | |
81c88a71 | 682 | mxt_write_object(data, MXT_TOUCH_MULTI_T9, |
7686b108 | 683 | MXT_TOUCH_TCHTHR, pdata->threshold); |
4cf51c38 JS |
684 | |
685 | /* Set touchscreen resolution */ | |
81c88a71 | 686 | mxt_write_object(data, MXT_TOUCH_MULTI_T9, |
7686b108 | 687 | MXT_TOUCH_XRANGE_LSB, (pdata->x_size - 1) & 0xff); |
81c88a71 | 688 | mxt_write_object(data, MXT_TOUCH_MULTI_T9, |
7686b108 | 689 | MXT_TOUCH_XRANGE_MSB, (pdata->x_size - 1) >> 8); |
81c88a71 | 690 | mxt_write_object(data, MXT_TOUCH_MULTI_T9, |
7686b108 | 691 | MXT_TOUCH_YRANGE_LSB, (pdata->y_size - 1) & 0xff); |
81c88a71 | 692 | mxt_write_object(data, MXT_TOUCH_MULTI_T9, |
7686b108 | 693 | MXT_TOUCH_YRANGE_MSB, (pdata->y_size - 1) >> 8); |
4cf51c38 JS |
694 | |
695 | /* Set touchscreen voltage */ | |
979a72da | 696 | if (pdata->voltage) { |
7686b108 IV |
697 | if (pdata->voltage < MXT_VOLTAGE_DEFAULT) { |
698 | voltage = (MXT_VOLTAGE_DEFAULT - pdata->voltage) / | |
699 | MXT_VOLTAGE_STEP; | |
4cf51c38 JS |
700 | voltage = 0xff - voltage + 1; |
701 | } else | |
7686b108 IV |
702 | voltage = (pdata->voltage - MXT_VOLTAGE_DEFAULT) / |
703 | MXT_VOLTAGE_STEP; | |
4cf51c38 | 704 | |
81c88a71 | 705 | mxt_write_object(data, MXT_SPT_CTECONFIG_T28, |
7686b108 | 706 | MXT_CTE_VOLTAGE, voltage); |
4cf51c38 JS |
707 | } |
708 | } | |
709 | ||
7686b108 | 710 | static int mxt_get_info(struct mxt_data *data) |
4cf51c38 JS |
711 | { |
712 | struct i2c_client *client = data->client; | |
7686b108 | 713 | struct mxt_info *info = &data->info; |
4cf51c38 | 714 | int error; |
4cf51c38 | 715 | |
23003a84 DK |
716 | /* Read 7-byte info block starting at address 0 */ |
717 | error = __mxt_read_reg(client, MXT_INFO, sizeof(*info), info); | |
4cf51c38 JS |
718 | if (error) |
719 | return error; | |
4cf51c38 JS |
720 | |
721 | return 0; | |
722 | } | |
723 | ||
7686b108 | 724 | static int mxt_get_object_table(struct mxt_data *data) |
4cf51c38 | 725 | { |
333e5a9a DK |
726 | struct i2c_client *client = data->client; |
727 | size_t table_size; | |
4cf51c38 JS |
728 | int error; |
729 | int i; | |
333e5a9a DK |
730 | u8 reportid; |
731 | ||
732 | table_size = data->info.object_num * sizeof(struct mxt_object); | |
733 | error = __mxt_read_reg(client, MXT_OBJECT_START, table_size, | |
734 | data->object_table); | |
735 | if (error) | |
736 | return error; | |
4cf51c38 | 737 | |
333e5a9a DK |
738 | /* Valid Report IDs start counting from 1 */ |
739 | reportid = 1; | |
4cf51c38 | 740 | for (i = 0; i < data->info.object_num; i++) { |
7686b108 | 741 | struct mxt_object *object = data->object_table + i; |
333e5a9a | 742 | u8 min_id, max_id; |
4cf51c38 | 743 | |
333e5a9a | 744 | le16_to_cpus(&object->start_address); |
4cf51c38 JS |
745 | |
746 | if (object->num_report_ids) { | |
333e5a9a | 747 | min_id = reportid; |
4cf51c38 JS |
748 | reportid += object->num_report_ids * |
749 | (object->instances + 1); | |
333e5a9a DK |
750 | max_id = reportid - 1; |
751 | } else { | |
752 | min_id = 0; | |
753 | max_id = 0; | |
754 | } | |
755 | ||
756 | dev_dbg(&data->client->dev, | |
757 | "Type %2d Start %3d Size %3d Instances %2d ReportIDs %3u : %3u\n", | |
758 | object->type, object->start_address, object->size + 1, | |
759 | object->instances + 1, min_id, max_id); | |
760 | ||
761 | switch (object->type) { | |
fdf80421 DK |
762 | case MXT_GEN_COMMAND_T6: |
763 | data->T6_reportid = min_id; | |
764 | break; | |
333e5a9a DK |
765 | case MXT_TOUCH_MULTI_T9: |
766 | data->T9_reportid_min = min_id; | |
767 | data->T9_reportid_max = max_id; | |
768 | break; | |
4cf51c38 JS |
769 | } |
770 | } | |
771 | ||
772 | return 0; | |
773 | } | |
774 | ||
7d4fa100 DK |
775 | static void mxt_free_object_table(struct mxt_data *data) |
776 | { | |
777 | kfree(data->object_table); | |
778 | data->object_table = NULL; | |
fdf80421 | 779 | data->T6_reportid = 0; |
333e5a9a DK |
780 | data->T9_reportid_min = 0; |
781 | data->T9_reportid_max = 0; | |
fdf80421 | 782 | |
7d4fa100 DK |
783 | } |
784 | ||
7686b108 | 785 | static int mxt_initialize(struct mxt_data *data) |
4cf51c38 JS |
786 | { |
787 | struct i2c_client *client = data->client; | |
7686b108 | 788 | struct mxt_info *info = &data->info; |
4cf51c38 JS |
789 | int error; |
790 | u8 val; | |
791 | ||
7686b108 | 792 | error = mxt_get_info(data); |
4cf51c38 JS |
793 | if (error) |
794 | return error; | |
795 | ||
796 | data->object_table = kcalloc(info->object_num, | |
7686b108 | 797 | sizeof(struct mxt_object), |
4cf51c38 JS |
798 | GFP_KERNEL); |
799 | if (!data->object_table) { | |
800 | dev_err(&client->dev, "Failed to allocate memory\n"); | |
801 | return -ENOMEM; | |
802 | } | |
803 | ||
804 | /* Get object table information */ | |
7686b108 | 805 | error = mxt_get_object_table(data); |
4cf51c38 | 806 | if (error) |
7d4fa100 | 807 | goto err_free_object_table; |
4cf51c38 JS |
808 | |
809 | /* Check register init values */ | |
7686b108 | 810 | error = mxt_check_reg_init(data); |
4cf51c38 | 811 | if (error) |
7d4fa100 | 812 | goto err_free_object_table; |
4cf51c38 | 813 | |
7686b108 | 814 | mxt_handle_pdata(data); |
4cf51c38 JS |
815 | |
816 | /* Backup to memory */ | |
81c88a71 | 817 | mxt_write_object(data, MXT_GEN_COMMAND_T6, |
7686b108 IV |
818 | MXT_COMMAND_BACKUPNV, |
819 | MXT_BACKUP_VALUE); | |
820 | msleep(MXT_BACKUP_TIME); | |
4cf51c38 JS |
821 | |
822 | /* Soft reset */ | |
81c88a71 | 823 | mxt_write_object(data, MXT_GEN_COMMAND_T6, |
7686b108 IV |
824 | MXT_COMMAND_RESET, 1); |
825 | msleep(MXT_RESET_TIME); | |
4cf51c38 JS |
826 | |
827 | /* Update matrix size at info struct */ | |
7686b108 | 828 | error = mxt_read_reg(client, MXT_MATRIX_X_SIZE, &val); |
4cf51c38 | 829 | if (error) |
7d4fa100 | 830 | goto err_free_object_table; |
4cf51c38 JS |
831 | info->matrix_xsize = val; |
832 | ||
7686b108 | 833 | error = mxt_read_reg(client, MXT_MATRIX_Y_SIZE, &val); |
4cf51c38 | 834 | if (error) |
7d4fa100 | 835 | goto err_free_object_table; |
4cf51c38 JS |
836 | info->matrix_ysize = val; |
837 | ||
838 | dev_info(&client->dev, | |
e0e0269f DK |
839 | "Family ID: %u Variant ID: %u Major.Minor.Build: %u.%u.%02X\n", |
840 | info->family_id, info->variant_id, info->version >> 4, | |
841 | info->version & 0xf, info->build); | |
4cf51c38 JS |
842 | |
843 | dev_info(&client->dev, | |
e0e0269f | 844 | "Matrix X Size: %u Matrix Y Size: %u Object Num: %u\n", |
4cf51c38 JS |
845 | info->matrix_xsize, info->matrix_ysize, |
846 | info->object_num); | |
847 | ||
848 | return 0; | |
7d4fa100 DK |
849 | |
850 | err_free_object_table: | |
851 | mxt_free_object_table(data); | |
852 | return error; | |
4cf51c38 JS |
853 | } |
854 | ||
910d8051 JS |
855 | static void mxt_calc_resolution(struct mxt_data *data) |
856 | { | |
857 | unsigned int max_x = data->pdata->x_size - 1; | |
858 | unsigned int max_y = data->pdata->y_size - 1; | |
859 | ||
860 | if (data->pdata->orient & MXT_XY_SWITCH) { | |
861 | data->max_x = max_y; | |
862 | data->max_y = max_x; | |
863 | } else { | |
864 | data->max_x = max_x; | |
865 | data->max_y = max_y; | |
866 | } | |
867 | } | |
868 | ||
b19fc9ec DK |
869 | /* Firmware Version is returned as Major.Minor.Build */ |
870 | static ssize_t mxt_fw_version_show(struct device *dev, | |
871 | struct device_attribute *attr, char *buf) | |
872 | { | |
873 | struct mxt_data *data = dev_get_drvdata(dev); | |
874 | struct mxt_info *info = &data->info; | |
875 | return scnprintf(buf, PAGE_SIZE, "%u.%u.%02X\n", | |
876 | info->version >> 4, info->version & 0xf, info->build); | |
877 | } | |
878 | ||
879 | /* Hardware Version is returned as FamilyID.VariantID */ | |
880 | static ssize_t mxt_hw_version_show(struct device *dev, | |
881 | struct device_attribute *attr, char *buf) | |
882 | { | |
883 | struct mxt_data *data = dev_get_drvdata(dev); | |
884 | struct mxt_info *info = &data->info; | |
885 | return scnprintf(buf, PAGE_SIZE, "%u.%u\n", | |
886 | info->family_id, info->variant_id); | |
887 | } | |
888 | ||
794eb67e DK |
889 | static ssize_t mxt_show_instance(char *buf, int count, |
890 | struct mxt_object *object, int instance, | |
891 | const u8 *val) | |
892 | { | |
893 | int i; | |
894 | ||
895 | if (object->instances > 0) | |
896 | count += scnprintf(buf + count, PAGE_SIZE - count, | |
897 | "Instance %u\n", instance); | |
898 | ||
899 | for (i = 0; i < object->size + 1; i++) | |
900 | count += scnprintf(buf + count, PAGE_SIZE - count, | |
901 | "\t[%2u]: %02x (%d)\n", i, val[i], val[i]); | |
902 | count += scnprintf(buf + count, PAGE_SIZE - count, "\n"); | |
903 | ||
904 | return count; | |
905 | } | |
906 | ||
7686b108 | 907 | static ssize_t mxt_object_show(struct device *dev, |
4cf51c38 JS |
908 | struct device_attribute *attr, char *buf) |
909 | { | |
7686b108 IV |
910 | struct mxt_data *data = dev_get_drvdata(dev); |
911 | struct mxt_object *object; | |
4cf51c38 JS |
912 | int count = 0; |
913 | int i, j; | |
914 | int error; | |
43a91d51 | 915 | u8 *obuf; |
4cf51c38 | 916 | |
43a91d51 DK |
917 | /* Pre-allocate buffer large enough to hold max sized object. */ |
918 | obuf = kmalloc(256, GFP_KERNEL); | |
919 | if (!obuf) | |
920 | return -ENOMEM; | |
4cf51c38 | 921 | |
43a91d51 | 922 | error = 0; |
4cf51c38 JS |
923 | for (i = 0; i < data->info.object_num; i++) { |
924 | object = data->object_table + i; | |
925 | ||
91630955 | 926 | if (!mxt_object_readable(object->type)) |
4cf51c38 | 927 | continue; |
4cf51c38 | 928 | |
91630955 DK |
929 | count += scnprintf(buf + count, PAGE_SIZE - count, |
930 | "T%u:\n", object->type); | |
4cf51c38 | 931 | |
794eb67e DK |
932 | for (j = 0; j < object->instances + 1; j++) { |
933 | u16 size = object->size + 1; | |
934 | u16 addr = object->start_address + j * size; | |
43a91d51 | 935 | |
794eb67e | 936 | error = __mxt_read_reg(data->client, addr, size, obuf); |
4cf51c38 | 937 | if (error) |
794eb67e | 938 | goto done; |
4cf51c38 | 939 | |
794eb67e | 940 | count = mxt_show_instance(buf, count, object, j, obuf); |
4cf51c38 | 941 | } |
4cf51c38 JS |
942 | } |
943 | ||
794eb67e | 944 | done: |
43a91d51 DK |
945 | kfree(obuf); |
946 | return error ?: count; | |
4cf51c38 JS |
947 | } |
948 | ||
7686b108 | 949 | static int mxt_load_fw(struct device *dev, const char *fn) |
4cf51c38 | 950 | { |
7686b108 | 951 | struct mxt_data *data = dev_get_drvdata(dev); |
4cf51c38 JS |
952 | struct i2c_client *client = data->client; |
953 | const struct firmware *fw = NULL; | |
954 | unsigned int frame_size; | |
955 | unsigned int pos = 0; | |
956 | int ret; | |
957 | ||
958 | ret = request_firmware(&fw, fn, dev); | |
959 | if (ret) { | |
960 | dev_err(dev, "Unable to open firmware %s\n", fn); | |
961 | return ret; | |
962 | } | |
963 | ||
964 | /* Change to the bootloader mode */ | |
81c88a71 | 965 | mxt_write_object(data, MXT_GEN_COMMAND_T6, |
7686b108 IV |
966 | MXT_COMMAND_RESET, MXT_BOOT_VALUE); |
967 | msleep(MXT_RESET_TIME); | |
4cf51c38 JS |
968 | |
969 | /* Change to slave address of bootloader */ | |
7686b108 IV |
970 | if (client->addr == MXT_APP_LOW) |
971 | client->addr = MXT_BOOT_LOW; | |
4cf51c38 | 972 | else |
7686b108 | 973 | client->addr = MXT_BOOT_HIGH; |
4cf51c38 | 974 | |
7686b108 | 975 | ret = mxt_check_bootloader(client, MXT_WAITING_BOOTLOAD_CMD); |
4cf51c38 JS |
976 | if (ret) |
977 | goto out; | |
978 | ||
979 | /* Unlock bootloader */ | |
7686b108 | 980 | mxt_unlock_bootloader(client); |
4cf51c38 JS |
981 | |
982 | while (pos < fw->size) { | |
7686b108 IV |
983 | ret = mxt_check_bootloader(client, |
984 | MXT_WAITING_FRAME_DATA); | |
4cf51c38 JS |
985 | if (ret) |
986 | goto out; | |
987 | ||
988 | frame_size = ((*(fw->data + pos) << 8) | *(fw->data + pos + 1)); | |
989 | ||
990 | /* We should add 2 at frame size as the the firmware data is not | |
991 | * included the CRC bytes. | |
992 | */ | |
993 | frame_size += 2; | |
994 | ||
995 | /* Write one frame to device */ | |
7686b108 | 996 | mxt_fw_write(client, fw->data + pos, frame_size); |
4cf51c38 | 997 | |
7686b108 IV |
998 | ret = mxt_check_bootloader(client, |
999 | MXT_FRAME_CRC_PASS); | |
4cf51c38 JS |
1000 | if (ret) |
1001 | goto out; | |
1002 | ||
1003 | pos += frame_size; | |
1004 | ||
1005 | dev_dbg(dev, "Updated %d bytes / %zd bytes\n", pos, fw->size); | |
1006 | } | |
1007 | ||
1008 | out: | |
1009 | release_firmware(fw); | |
1010 | ||
1011 | /* Change to slave address of application */ | |
7686b108 IV |
1012 | if (client->addr == MXT_BOOT_LOW) |
1013 | client->addr = MXT_APP_LOW; | |
4cf51c38 | 1014 | else |
7686b108 | 1015 | client->addr = MXT_APP_HIGH; |
4cf51c38 JS |
1016 | |
1017 | return ret; | |
1018 | } | |
1019 | ||
7686b108 | 1020 | static ssize_t mxt_update_fw_store(struct device *dev, |
4cf51c38 JS |
1021 | struct device_attribute *attr, |
1022 | const char *buf, size_t count) | |
1023 | { | |
7686b108 | 1024 | struct mxt_data *data = dev_get_drvdata(dev); |
4cf51c38 JS |
1025 | int error; |
1026 | ||
4cf51c38 JS |
1027 | disable_irq(data->irq); |
1028 | ||
7686b108 | 1029 | error = mxt_load_fw(dev, MXT_FW_NAME); |
4cf51c38 JS |
1030 | if (error) { |
1031 | dev_err(dev, "The firmware update failed(%d)\n", error); | |
1032 | count = error; | |
1033 | } else { | |
1034 | dev_dbg(dev, "The firmware update succeeded\n"); | |
1035 | ||
1036 | /* Wait for reset */ | |
7686b108 | 1037 | msleep(MXT_FWRESET_TIME); |
4cf51c38 | 1038 | |
7d4fa100 | 1039 | mxt_free_object_table(data); |
4cf51c38 | 1040 | |
7686b108 | 1041 | mxt_initialize(data); |
4cf51c38 JS |
1042 | } |
1043 | ||
1044 | enable_irq(data->irq); | |
1045 | ||
08960a07 IV |
1046 | error = mxt_make_highchg(data); |
1047 | if (error) | |
1048 | return error; | |
1049 | ||
4cf51c38 JS |
1050 | return count; |
1051 | } | |
1052 | ||
b19fc9ec DK |
1053 | static DEVICE_ATTR(fw_version, S_IRUGO, mxt_fw_version_show, NULL); |
1054 | static DEVICE_ATTR(hw_version, S_IRUGO, mxt_hw_version_show, NULL); | |
71b3e938 DK |
1055 | static DEVICE_ATTR(object, S_IRUGO, mxt_object_show, NULL); |
1056 | static DEVICE_ATTR(update_fw, S_IWUSR, NULL, mxt_update_fw_store); | |
4cf51c38 | 1057 | |
7686b108 | 1058 | static struct attribute *mxt_attrs[] = { |
b19fc9ec DK |
1059 | &dev_attr_fw_version.attr, |
1060 | &dev_attr_hw_version.attr, | |
4cf51c38 JS |
1061 | &dev_attr_object.attr, |
1062 | &dev_attr_update_fw.attr, | |
1063 | NULL | |
1064 | }; | |
1065 | ||
7686b108 IV |
1066 | static const struct attribute_group mxt_attr_group = { |
1067 | .attrs = mxt_attrs, | |
4cf51c38 JS |
1068 | }; |
1069 | ||
7686b108 | 1070 | static void mxt_start(struct mxt_data *data) |
4cf51c38 JS |
1071 | { |
1072 | /* Touch enable */ | |
7686b108 | 1073 | mxt_write_object(data, |
81c88a71 | 1074 | MXT_TOUCH_MULTI_T9, MXT_TOUCH_CTRL, 0x83); |
4cf51c38 JS |
1075 | } |
1076 | ||
7686b108 | 1077 | static void mxt_stop(struct mxt_data *data) |
4cf51c38 JS |
1078 | { |
1079 | /* Touch disable */ | |
7686b108 | 1080 | mxt_write_object(data, |
81c88a71 | 1081 | MXT_TOUCH_MULTI_T9, MXT_TOUCH_CTRL, 0); |
4cf51c38 JS |
1082 | } |
1083 | ||
7686b108 | 1084 | static int mxt_input_open(struct input_dev *dev) |
4cf51c38 | 1085 | { |
7686b108 | 1086 | struct mxt_data *data = input_get_drvdata(dev); |
4cf51c38 | 1087 | |
7686b108 | 1088 | mxt_start(data); |
4cf51c38 JS |
1089 | |
1090 | return 0; | |
1091 | } | |
1092 | ||
7686b108 | 1093 | static void mxt_input_close(struct input_dev *dev) |
4cf51c38 | 1094 | { |
7686b108 | 1095 | struct mxt_data *data = input_get_drvdata(dev); |
4cf51c38 | 1096 | |
7686b108 | 1097 | mxt_stop(data); |
4cf51c38 JS |
1098 | } |
1099 | ||
7686b108 | 1100 | static int __devinit mxt_probe(struct i2c_client *client, |
4cf51c38 JS |
1101 | const struct i2c_device_id *id) |
1102 | { | |
919ed895 | 1103 | const struct mxt_platform_data *pdata = client->dev.platform_data; |
7686b108 | 1104 | struct mxt_data *data; |
4cf51c38 JS |
1105 | struct input_dev *input_dev; |
1106 | int error; | |
cb159115 | 1107 | unsigned int num_mt_slots; |
4cf51c38 | 1108 | |
919ed895 | 1109 | if (!pdata) |
4cf51c38 JS |
1110 | return -EINVAL; |
1111 | ||
7686b108 | 1112 | data = kzalloc(sizeof(struct mxt_data), GFP_KERNEL); |
4cf51c38 JS |
1113 | input_dev = input_allocate_device(); |
1114 | if (!data || !input_dev) { | |
1115 | dev_err(&client->dev, "Failed to allocate memory\n"); | |
1116 | error = -ENOMEM; | |
1117 | goto err_free_mem; | |
1118 | } | |
1119 | ||
7686b108 | 1120 | input_dev->name = "Atmel maXTouch Touchscreen"; |
ec02ac2b DK |
1121 | snprintf(data->phys, sizeof(data->phys), "i2c-%u-%04x/input0", |
1122 | client->adapter->nr, client->addr); | |
1123 | input_dev->phys = data->phys; | |
1124 | ||
4cf51c38 JS |
1125 | input_dev->id.bustype = BUS_I2C; |
1126 | input_dev->dev.parent = &client->dev; | |
7686b108 IV |
1127 | input_dev->open = mxt_input_open; |
1128 | input_dev->close = mxt_input_close; | |
4cf51c38 | 1129 | |
910d8051 JS |
1130 | data->client = client; |
1131 | data->input_dev = input_dev; | |
1132 | data->pdata = pdata; | |
1133 | data->irq = client->irq; | |
1134 | ||
1135 | mxt_calc_resolution(data); | |
1136 | ||
cb159115 DK |
1137 | error = mxt_initialize(data); |
1138 | if (error) | |
1139 | goto err_free_mem; | |
1140 | ||
4cf51c38 JS |
1141 | __set_bit(EV_ABS, input_dev->evbit); |
1142 | __set_bit(EV_KEY, input_dev->evbit); | |
1143 | __set_bit(BTN_TOUCH, input_dev->keybit); | |
1144 | ||
1145 | /* For single touch */ | |
1146 | input_set_abs_params(input_dev, ABS_X, | |
910d8051 | 1147 | 0, data->max_x, 0, 0); |
4cf51c38 | 1148 | input_set_abs_params(input_dev, ABS_Y, |
910d8051 | 1149 | 0, data->max_y, 0, 0); |
28ac2933 YS |
1150 | input_set_abs_params(input_dev, ABS_PRESSURE, |
1151 | 0, 255, 0, 0); | |
4cf51c38 JS |
1152 | |
1153 | /* For multi touch */ | |
cb159115 | 1154 | num_mt_slots = data->T9_reportid_max - data->T9_reportid_min + 1; |
b4adbbef | 1155 | error = input_mt_init_slots(input_dev, num_mt_slots, 0); |
e1e1658d | 1156 | if (error) |
cb159115 | 1157 | goto err_free_object; |
4cf51c38 | 1158 | input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR, |
7686b108 | 1159 | 0, MXT_MAX_AREA, 0, 0); |
4cf51c38 | 1160 | input_set_abs_params(input_dev, ABS_MT_POSITION_X, |
910d8051 | 1161 | 0, data->max_x, 0, 0); |
4cf51c38 | 1162 | input_set_abs_params(input_dev, ABS_MT_POSITION_Y, |
910d8051 | 1163 | 0, data->max_y, 0, 0); |
28ac2933 YS |
1164 | input_set_abs_params(input_dev, ABS_MT_PRESSURE, |
1165 | 0, 255, 0, 0); | |
4cf51c38 JS |
1166 | |
1167 | input_set_drvdata(input_dev, data); | |
4cf51c38 JS |
1168 | i2c_set_clientdata(client, data); |
1169 | ||
7686b108 | 1170 | error = request_threaded_irq(client->irq, NULL, mxt_interrupt, |
9b7e31bb | 1171 | pdata->irqflags | IRQF_ONESHOT, |
f053ea8d | 1172 | client->name, data); |
4cf51c38 JS |
1173 | if (error) { |
1174 | dev_err(&client->dev, "Failed to register interrupt\n"); | |
1175 | goto err_free_object; | |
1176 | } | |
1177 | ||
08960a07 IV |
1178 | error = mxt_make_highchg(data); |
1179 | if (error) | |
1180 | goto err_free_irq; | |
1181 | ||
4cf51c38 JS |
1182 | error = input_register_device(input_dev); |
1183 | if (error) | |
1184 | goto err_free_irq; | |
1185 | ||
7686b108 | 1186 | error = sysfs_create_group(&client->dev.kobj, &mxt_attr_group); |
4cf51c38 JS |
1187 | if (error) |
1188 | goto err_unregister_device; | |
1189 | ||
1190 | return 0; | |
1191 | ||
1192 | err_unregister_device: | |
1193 | input_unregister_device(input_dev); | |
1194 | input_dev = NULL; | |
1195 | err_free_irq: | |
1196 | free_irq(client->irq, data); | |
1197 | err_free_object: | |
1198 | kfree(data->object_table); | |
1199 | err_free_mem: | |
1200 | input_free_device(input_dev); | |
1201 | kfree(data); | |
1202 | return error; | |
1203 | } | |
1204 | ||
7686b108 | 1205 | static int __devexit mxt_remove(struct i2c_client *client) |
4cf51c38 | 1206 | { |
7686b108 | 1207 | struct mxt_data *data = i2c_get_clientdata(client); |
4cf51c38 | 1208 | |
7686b108 | 1209 | sysfs_remove_group(&client->dev.kobj, &mxt_attr_group); |
4cf51c38 JS |
1210 | free_irq(data->irq, data); |
1211 | input_unregister_device(data->input_dev); | |
1212 | kfree(data->object_table); | |
1213 | kfree(data); | |
1214 | ||
1215 | return 0; | |
1216 | } | |
1217 | ||
3a73c816 | 1218 | #ifdef CONFIG_PM_SLEEP |
7686b108 | 1219 | static int mxt_suspend(struct device *dev) |
4cf51c38 | 1220 | { |
8b5fce06 | 1221 | struct i2c_client *client = to_i2c_client(dev); |
7686b108 | 1222 | struct mxt_data *data = i2c_get_clientdata(client); |
4cf51c38 JS |
1223 | struct input_dev *input_dev = data->input_dev; |
1224 | ||
1225 | mutex_lock(&input_dev->mutex); | |
1226 | ||
1227 | if (input_dev->users) | |
7686b108 | 1228 | mxt_stop(data); |
4cf51c38 JS |
1229 | |
1230 | mutex_unlock(&input_dev->mutex); | |
1231 | ||
1232 | return 0; | |
1233 | } | |
1234 | ||
7686b108 | 1235 | static int mxt_resume(struct device *dev) |
4cf51c38 | 1236 | { |
8b5fce06 | 1237 | struct i2c_client *client = to_i2c_client(dev); |
7686b108 | 1238 | struct mxt_data *data = i2c_get_clientdata(client); |
4cf51c38 JS |
1239 | struct input_dev *input_dev = data->input_dev; |
1240 | ||
1241 | /* Soft reset */ | |
81c88a71 | 1242 | mxt_write_object(data, MXT_GEN_COMMAND_T6, |
7686b108 | 1243 | MXT_COMMAND_RESET, 1); |
4cf51c38 | 1244 | |
7686b108 | 1245 | msleep(MXT_RESET_TIME); |
4cf51c38 JS |
1246 | |
1247 | mutex_lock(&input_dev->mutex); | |
1248 | ||
1249 | if (input_dev->users) | |
7686b108 | 1250 | mxt_start(data); |
4cf51c38 JS |
1251 | |
1252 | mutex_unlock(&input_dev->mutex); | |
1253 | ||
1254 | return 0; | |
1255 | } | |
4cf51c38 JS |
1256 | #endif |
1257 | ||
3a73c816 DK |
1258 | static SIMPLE_DEV_PM_OPS(mxt_pm_ops, mxt_suspend, mxt_resume); |
1259 | ||
7686b108 | 1260 | static const struct i2c_device_id mxt_id[] = { |
4cf51c38 | 1261 | { "qt602240_ts", 0 }, |
7686b108 | 1262 | { "atmel_mxt_ts", 0 }, |
46ee2a05 | 1263 | { "mXT224", 0 }, |
4cf51c38 JS |
1264 | { } |
1265 | }; | |
7686b108 | 1266 | MODULE_DEVICE_TABLE(i2c, mxt_id); |
4cf51c38 | 1267 | |
7686b108 | 1268 | static struct i2c_driver mxt_driver = { |
4cf51c38 | 1269 | .driver = { |
7686b108 | 1270 | .name = "atmel_mxt_ts", |
4cf51c38 | 1271 | .owner = THIS_MODULE, |
7686b108 | 1272 | .pm = &mxt_pm_ops, |
4cf51c38 | 1273 | }, |
7686b108 IV |
1274 | .probe = mxt_probe, |
1275 | .remove = __devexit_p(mxt_remove), | |
1276 | .id_table = mxt_id, | |
4cf51c38 JS |
1277 | }; |
1278 | ||
1b92c1cf | 1279 | module_i2c_driver(mxt_driver); |
4cf51c38 JS |
1280 | |
1281 | /* Module information */ | |
1282 | MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>"); | |
7686b108 | 1283 | MODULE_DESCRIPTION("Atmel maXTouch Touchscreen driver"); |
4cf51c38 | 1284 | MODULE_LICENSE("GPL"); |