Commit | Line | Data |
---|---|---|
4cf51c38 | 1 | /* |
7686b108 | 2 | * Atmel maXTouch Touchscreen driver |
4cf51c38 JS |
3 | * |
4 | * Copyright (C) 2010 Samsung Electronics Co.Ltd | |
50a77c65 | 5 | * Copyright (C) 2011-2014 Atmel Corporation |
1e0c0c5b DK |
6 | * Copyright (C) 2012 Google, Inc. |
7 | * | |
4cf51c38 JS |
8 | * Author: Joonyoung Shim <jy0922.shim@samsung.com> |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify it | |
11 | * under the terms of the GNU General Public License as published by the | |
12 | * Free Software Foundation; either version 2 of the License, or (at your | |
13 | * option) any later version. | |
14 | * | |
15 | */ | |
16 | ||
17 | #include <linux/module.h> | |
d79e7e47 BL |
18 | #include <linux/init.h> |
19 | #include <linux/completion.h> | |
4cf51c38 JS |
20 | #include <linux/delay.h> |
21 | #include <linux/firmware.h> | |
22 | #include <linux/i2c.h> | |
964de521 | 23 | #include <linux/i2c/atmel_mxt_ts.h> |
8b86c1c2 | 24 | #include <linux/input/mt.h> |
4cf51c38 | 25 | #include <linux/interrupt.h> |
78188be3 | 26 | #include <linux/of.h> |
4cf51c38 JS |
27 | #include <linux/slab.h> |
28 | ||
29 | /* Version */ | |
7686b108 IV |
30 | #define MXT_VER_20 20 |
31 | #define MXT_VER_21 21 | |
32 | #define MXT_VER_22 22 | |
4cf51c38 | 33 | |
50a77c65 | 34 | /* Firmware files */ |
7686b108 | 35 | #define MXT_FW_NAME "maxtouch.fw" |
50a77c65 ND |
36 | #define MXT_CFG_NAME "maxtouch.cfg" |
37 | #define MXT_CFG_MAGIC "OBP_RAW V1" | |
4cf51c38 JS |
38 | |
39 | /* Registers */ | |
23003a84 | 40 | #define MXT_INFO 0x00 |
7686b108 IV |
41 | #define MXT_FAMILY_ID 0x00 |
42 | #define MXT_VARIANT_ID 0x01 | |
43 | #define MXT_VERSION 0x02 | |
44 | #define MXT_BUILD 0x03 | |
45 | #define MXT_MATRIX_X_SIZE 0x04 | |
46 | #define MXT_MATRIX_Y_SIZE 0x05 | |
47 | #define MXT_OBJECT_NUM 0x06 | |
48 | #define MXT_OBJECT_START 0x07 | |
4cf51c38 | 49 | |
7686b108 | 50 | #define MXT_OBJECT_SIZE 6 |
4ce6fa01 ND |
51 | #define MXT_INFO_CHECKSUM_SIZE 3 |
52 | #define MXT_MAX_BLOCK_WRITE 256 | |
4cf51c38 JS |
53 | |
54 | /* Object types */ | |
81c88a71 IV |
55 | #define MXT_DEBUG_DIAGNOSTIC_T37 37 |
56 | #define MXT_GEN_MESSAGE_T5 5 | |
57 | #define MXT_GEN_COMMAND_T6 6 | |
58 | #define MXT_GEN_POWER_T7 7 | |
59 | #define MXT_GEN_ACQUIRE_T8 8 | |
60 | #define MXT_GEN_DATASOURCE_T53 53 | |
61 | #define MXT_TOUCH_MULTI_T9 9 | |
62 | #define MXT_TOUCH_KEYARRAY_T15 15 | |
63 | #define MXT_TOUCH_PROXIMITY_T23 23 | |
64 | #define MXT_TOUCH_PROXKEY_T52 52 | |
65 | #define MXT_PROCI_GRIPFACE_T20 20 | |
66 | #define MXT_PROCG_NOISE_T22 22 | |
67 | #define MXT_PROCI_ONETOUCH_T24 24 | |
68 | #define MXT_PROCI_TWOTOUCH_T27 27 | |
69 | #define MXT_PROCI_GRIP_T40 40 | |
70 | #define MXT_PROCI_PALM_T41 41 | |
71 | #define MXT_PROCI_TOUCHSUPPRESSION_T42 42 | |
72 | #define MXT_PROCI_STYLUS_T47 47 | |
73 | #define MXT_PROCG_NOISESUPPRESSION_T48 48 | |
74 | #define MXT_SPT_COMMSCONFIG_T18 18 | |
75 | #define MXT_SPT_GPIOPWM_T19 19 | |
76 | #define MXT_SPT_SELFTEST_T25 25 | |
77 | #define MXT_SPT_CTECONFIG_T28 28 | |
78 | #define MXT_SPT_USERDATA_T38 38 | |
79 | #define MXT_SPT_DIGITIZER_T43 43 | |
80 | #define MXT_SPT_MESSAGECOUNT_T44 44 | |
81 | #define MXT_SPT_CTECONFIG_T46 46 | |
82 | ||
5f3f9bc2 ND |
83 | /* MXT_GEN_MESSAGE_T5 object */ |
84 | #define MXT_RPTID_NOMSG 0xff | |
85 | ||
81c88a71 | 86 | /* MXT_GEN_COMMAND_T6 field */ |
7686b108 IV |
87 | #define MXT_COMMAND_RESET 0 |
88 | #define MXT_COMMAND_BACKUPNV 1 | |
89 | #define MXT_COMMAND_CALIBRATE 2 | |
90 | #define MXT_COMMAND_REPORTALL 3 | |
91 | #define MXT_COMMAND_DIAGNOSTIC 5 | |
92 | ||
a4a2ef46 IV |
93 | /* Define for T6 status byte */ |
94 | #define MXT_T6_STATUS_RESET (1 << 7) | |
497767d1 ND |
95 | #define MXT_T6_STATUS_OFL (1 << 6) |
96 | #define MXT_T6_STATUS_SIGERR (1 << 5) | |
97 | #define MXT_T6_STATUS_CAL (1 << 4) | |
98 | #define MXT_T6_STATUS_CFGERR (1 << 3) | |
99 | #define MXT_T6_STATUS_COMSERR (1 << 2) | |
a4a2ef46 | 100 | |
81c88a71 | 101 | /* MXT_GEN_POWER_T7 field */ |
9d469d03 ND |
102 | struct t7_config { |
103 | u8 idle; | |
104 | u8 active; | |
105 | } __packed; | |
106 | ||
107 | #define MXT_POWER_CFG_RUN 0 | |
108 | #define MXT_POWER_CFG_DEEPSLEEP 1 | |
7686b108 | 109 | |
81c88a71 | 110 | /* MXT_GEN_ACQUIRE_T8 field */ |
7686b108 IV |
111 | #define MXT_ACQUIRE_CHRGTIME 0 |
112 | #define MXT_ACQUIRE_TCHDRIFT 2 | |
113 | #define MXT_ACQUIRE_DRIFTST 3 | |
114 | #define MXT_ACQUIRE_TCHAUTOCAL 4 | |
115 | #define MXT_ACQUIRE_SYNC 5 | |
116 | #define MXT_ACQUIRE_ATCHCALST 6 | |
117 | #define MXT_ACQUIRE_ATCHCALSTHR 7 | |
118 | ||
81c88a71 | 119 | /* MXT_TOUCH_MULTI_T9 field */ |
61dc1aba ND |
120 | #define MXT_T9_ORIENT 9 |
121 | #define MXT_T9_RANGE 18 | |
122 | ||
f3889ed1 ND |
123 | /* MXT_TOUCH_MULTI_T9 status */ |
124 | #define MXT_T9_UNGRIP (1 << 0) | |
125 | #define MXT_T9_SUPPRESS (1 << 1) | |
126 | #define MXT_T9_AMP (1 << 2) | |
127 | #define MXT_T9_VECTOR (1 << 3) | |
128 | #define MXT_T9_MOVE (1 << 4) | |
129 | #define MXT_T9_RELEASE (1 << 5) | |
130 | #define MXT_T9_PRESS (1 << 6) | |
131 | #define MXT_T9_DETECT (1 << 7) | |
132 | ||
61dc1aba ND |
133 | struct t9_range { |
134 | u16 x; | |
135 | u16 y; | |
136 | } __packed; | |
137 | ||
f3889ed1 ND |
138 | /* MXT_TOUCH_MULTI_T9 orient */ |
139 | #define MXT_T9_ORIENT_SWITCH (1 << 0) | |
7686b108 | 140 | |
81c88a71 | 141 | /* MXT_PROCI_GRIPFACE_T20 field */ |
7686b108 IV |
142 | #define MXT_GRIPFACE_CTRL 0 |
143 | #define MXT_GRIPFACE_XLOGRIP 1 | |
144 | #define MXT_GRIPFACE_XHIGRIP 2 | |
145 | #define MXT_GRIPFACE_YLOGRIP 3 | |
146 | #define MXT_GRIPFACE_YHIGRIP 4 | |
147 | #define MXT_GRIPFACE_MAXTCHS 5 | |
148 | #define MXT_GRIPFACE_SZTHR1 7 | |
149 | #define MXT_GRIPFACE_SZTHR2 8 | |
150 | #define MXT_GRIPFACE_SHPTHR1 9 | |
151 | #define MXT_GRIPFACE_SHPTHR2 10 | |
152 | #define MXT_GRIPFACE_SUPEXTTO 11 | |
153 | ||
154 | /* MXT_PROCI_NOISE field */ | |
155 | #define MXT_NOISE_CTRL 0 | |
156 | #define MXT_NOISE_OUTFLEN 1 | |
157 | #define MXT_NOISE_GCAFUL_LSB 3 | |
158 | #define MXT_NOISE_GCAFUL_MSB 4 | |
159 | #define MXT_NOISE_GCAFLL_LSB 5 | |
160 | #define MXT_NOISE_GCAFLL_MSB 6 | |
161 | #define MXT_NOISE_ACTVGCAFVALID 7 | |
162 | #define MXT_NOISE_NOISETHR 8 | |
163 | #define MXT_NOISE_FREQHOPSCALE 10 | |
164 | #define MXT_NOISE_FREQ0 11 | |
165 | #define MXT_NOISE_FREQ1 12 | |
166 | #define MXT_NOISE_FREQ2 13 | |
167 | #define MXT_NOISE_FREQ3 14 | |
168 | #define MXT_NOISE_FREQ4 15 | |
169 | #define MXT_NOISE_IDLEGCAFVALID 16 | |
170 | ||
81c88a71 | 171 | /* MXT_SPT_COMMSCONFIG_T18 */ |
7686b108 IV |
172 | #define MXT_COMMS_CTRL 0 |
173 | #define MXT_COMMS_CMD 1 | |
174 | ||
81c88a71 | 175 | /* MXT_SPT_CTECONFIG_T28 field */ |
7686b108 IV |
176 | #define MXT_CTE_CTRL 0 |
177 | #define MXT_CTE_CMD 1 | |
178 | #define MXT_CTE_MODE 2 | |
179 | #define MXT_CTE_IDLEGCAFDEPTH 3 | |
180 | #define MXT_CTE_ACTVGCAFDEPTH 4 | |
979a72da | 181 | #define MXT_CTE_VOLTAGE 5 |
7686b108 IV |
182 | |
183 | #define MXT_VOLTAGE_DEFAULT 2700000 | |
184 | #define MXT_VOLTAGE_STEP 10000 | |
185 | ||
81c88a71 | 186 | /* Define for MXT_GEN_COMMAND_T6 */ |
7686b108 | 187 | #define MXT_BOOT_VALUE 0xa5 |
a4a2ef46 | 188 | #define MXT_RESET_VALUE 0x01 |
7686b108 | 189 | #define MXT_BACKUP_VALUE 0x55 |
a4a2ef46 IV |
190 | |
191 | /* Delay times */ | |
8343bce1 LT |
192 | #define MXT_BACKUP_TIME 50 /* msec */ |
193 | #define MXT_RESET_TIME 200 /* msec */ | |
a4a2ef46 | 194 | #define MXT_RESET_TIMEOUT 3000 /* msec */ |
c3f78043 | 195 | #define MXT_CRC_TIMEOUT 1000 /* msec */ |
a0434b75 BL |
196 | #define MXT_FW_RESET_TIME 3000 /* msec */ |
197 | #define MXT_FW_CHG_TIMEOUT 300 /* msec */ | |
4cf51c38 JS |
198 | |
199 | /* Command to unlock bootloader */ | |
7686b108 IV |
200 | #define MXT_UNLOCK_CMD_MSB 0xaa |
201 | #define MXT_UNLOCK_CMD_LSB 0xdc | |
4cf51c38 JS |
202 | |
203 | /* Bootloader mode status */ | |
7686b108 IV |
204 | #define MXT_WAITING_BOOTLOAD_CMD 0xc0 /* valid 7 6 bit only */ |
205 | #define MXT_WAITING_FRAME_DATA 0x80 /* valid 7 6 bit only */ | |
206 | #define MXT_FRAME_CRC_CHECK 0x02 | |
207 | #define MXT_FRAME_CRC_FAIL 0x03 | |
208 | #define MXT_FRAME_CRC_PASS 0x04 | |
209 | #define MXT_APP_CRC_FAIL 0x40 /* valid 7 8 bit only */ | |
210 | #define MXT_BOOT_STATUS_MASK 0x3f | |
e57a66aa ND |
211 | #define MXT_BOOT_EXTENDED_ID (1 << 5) |
212 | #define MXT_BOOT_ID_MASK 0x1f | |
4cf51c38 | 213 | |
4cf51c38 | 214 | /* Touchscreen absolute values */ |
7686b108 | 215 | #define MXT_MAX_AREA 0xff |
4cf51c38 | 216 | |
22dfab7f DK |
217 | #define MXT_PIXELS_PER_MM 20 |
218 | ||
7686b108 | 219 | struct mxt_info { |
4cf51c38 JS |
220 | u8 family_id; |
221 | u8 variant_id; | |
222 | u8 version; | |
223 | u8 build; | |
224 | u8 matrix_xsize; | |
225 | u8 matrix_ysize; | |
226 | u8 object_num; | |
227 | }; | |
228 | ||
7686b108 | 229 | struct mxt_object { |
4cf51c38 JS |
230 | u8 type; |
231 | u16 start_address; | |
1e0c0c5b DK |
232 | u8 size_minus_one; |
233 | u8 instances_minus_one; | |
4cf51c38 | 234 | u8 num_report_ids; |
333e5a9a | 235 | } __packed; |
4cf51c38 | 236 | |
4cf51c38 | 237 | /* Each client has this additional data */ |
7686b108 | 238 | struct mxt_data { |
4cf51c38 JS |
239 | struct i2c_client *client; |
240 | struct input_dev *input_dev; | |
ec02ac2b | 241 | char phys[64]; /* device physical location */ |
7686b108 IV |
242 | const struct mxt_platform_data *pdata; |
243 | struct mxt_object *object_table; | |
244 | struct mxt_info info; | |
4cf51c38 | 245 | unsigned int irq; |
910d8051 JS |
246 | unsigned int max_x; |
247 | unsigned int max_y; | |
d79e7e47 | 248 | bool in_bootloader; |
4ce6fa01 | 249 | u16 mem_size; |
9d8dc3e5 | 250 | u8 max_reportid; |
c3f78043 | 251 | u32 config_crc; |
4ce6fa01 | 252 | u32 info_crc; |
f28a842d | 253 | u8 bootloader_addr; |
5f3f9bc2 | 254 | u8 *msg_buf; |
497767d1 | 255 | u8 t6_status; |
b9b05a89 | 256 | bool update_input; |
9d8dc3e5 ND |
257 | u8 last_message_count; |
258 | u8 num_touchids; | |
9d469d03 | 259 | struct t7_config t7_cfg; |
333e5a9a DK |
260 | |
261 | /* Cached parameters from object table */ | |
b9b05a89 | 262 | u16 T5_address; |
5f3f9bc2 | 263 | u8 T5_msg_size; |
fdf80421 | 264 | u8 T6_reportid; |
a4a2ef46 | 265 | u16 T6_address; |
4ce6fa01 | 266 | u16 T7_address; |
333e5a9a DK |
267 | u8 T9_reportid_min; |
268 | u8 T9_reportid_max; | |
22dfab7f | 269 | u8 T19_reportid; |
9d8dc3e5 | 270 | u16 T44_address; |
d79e7e47 BL |
271 | |
272 | /* for fw update in bootloader */ | |
273 | struct completion bl_completion; | |
a4a2ef46 IV |
274 | |
275 | /* for reset handling */ | |
276 | struct completion reset_completion; | |
c3f78043 ND |
277 | |
278 | /* for config update handling */ | |
279 | struct completion crc_completion; | |
4cf51c38 JS |
280 | }; |
281 | ||
1e0c0c5b DK |
282 | static size_t mxt_obj_size(const struct mxt_object *obj) |
283 | { | |
284 | return obj->size_minus_one + 1; | |
285 | } | |
286 | ||
287 | static size_t mxt_obj_instances(const struct mxt_object *obj) | |
288 | { | |
289 | return obj->instances_minus_one + 1; | |
290 | } | |
291 | ||
7686b108 | 292 | static bool mxt_object_readable(unsigned int type) |
4cf51c38 JS |
293 | { |
294 | switch (type) { | |
81c88a71 IV |
295 | case MXT_GEN_COMMAND_T6: |
296 | case MXT_GEN_POWER_T7: | |
297 | case MXT_GEN_ACQUIRE_T8: | |
298 | case MXT_GEN_DATASOURCE_T53: | |
299 | case MXT_TOUCH_MULTI_T9: | |
300 | case MXT_TOUCH_KEYARRAY_T15: | |
301 | case MXT_TOUCH_PROXIMITY_T23: | |
302 | case MXT_TOUCH_PROXKEY_T52: | |
303 | case MXT_PROCI_GRIPFACE_T20: | |
304 | case MXT_PROCG_NOISE_T22: | |
305 | case MXT_PROCI_ONETOUCH_T24: | |
306 | case MXT_PROCI_TWOTOUCH_T27: | |
307 | case MXT_PROCI_GRIP_T40: | |
308 | case MXT_PROCI_PALM_T41: | |
309 | case MXT_PROCI_TOUCHSUPPRESSION_T42: | |
310 | case MXT_PROCI_STYLUS_T47: | |
311 | case MXT_PROCG_NOISESUPPRESSION_T48: | |
312 | case MXT_SPT_COMMSCONFIG_T18: | |
313 | case MXT_SPT_GPIOPWM_T19: | |
314 | case MXT_SPT_SELFTEST_T25: | |
315 | case MXT_SPT_CTECONFIG_T28: | |
316 | case MXT_SPT_USERDATA_T38: | |
317 | case MXT_SPT_DIGITIZER_T43: | |
318 | case MXT_SPT_CTECONFIG_T46: | |
4cf51c38 JS |
319 | return true; |
320 | default: | |
321 | return false; | |
322 | } | |
323 | } | |
324 | ||
5f3f9bc2 | 325 | static void mxt_dump_message(struct mxt_data *data, u8 *message) |
4cf51c38 | 326 | { |
5f3f9bc2 ND |
327 | dev_dbg(&data->client->dev, "message: %*ph\n", |
328 | data->T5_msg_size, message); | |
4cf51c38 JS |
329 | } |
330 | ||
a4a2ef46 IV |
331 | static int mxt_wait_for_completion(struct mxt_data *data, |
332 | struct completion *comp, | |
333 | unsigned int timeout_ms) | |
d79e7e47 BL |
334 | { |
335 | struct device *dev = &data->client->dev; | |
d79e7e47 BL |
336 | unsigned long timeout = msecs_to_jiffies(timeout_ms); |
337 | long ret; | |
338 | ||
339 | ret = wait_for_completion_interruptible_timeout(comp, timeout); | |
340 | if (ret < 0) { | |
341 | return ret; | |
342 | } else if (ret == 0) { | |
343 | dev_err(dev, "Wait for completion timed out.\n"); | |
344 | return -ETIMEDOUT; | |
345 | } | |
346 | return 0; | |
347 | } | |
348 | ||
f28a842d ND |
349 | static int mxt_bootloader_read(struct mxt_data *data, |
350 | u8 *val, unsigned int count) | |
351 | { | |
352 | int ret; | |
353 | struct i2c_msg msg; | |
354 | ||
355 | msg.addr = data->bootloader_addr; | |
356 | msg.flags = data->client->flags & I2C_M_TEN; | |
357 | msg.flags |= I2C_M_RD; | |
358 | msg.len = count; | |
359 | msg.buf = val; | |
360 | ||
361 | ret = i2c_transfer(data->client->adapter, &msg, 1); | |
f28a842d ND |
362 | if (ret == 1) { |
363 | ret = 0; | |
364 | } else { | |
365 | ret = ret < 0 ? ret : -EIO; | |
366 | dev_err(&data->client->dev, "%s: i2c recv failed (%d)\n", | |
367 | __func__, ret); | |
368 | } | |
369 | ||
370 | return ret; | |
371 | } | |
372 | ||
373 | static int mxt_bootloader_write(struct mxt_data *data, | |
374 | const u8 * const val, unsigned int count) | |
375 | { | |
376 | int ret; | |
377 | struct i2c_msg msg; | |
378 | ||
379 | msg.addr = data->bootloader_addr; | |
380 | msg.flags = data->client->flags & I2C_M_TEN; | |
381 | msg.len = count; | |
382 | msg.buf = (u8 *)val; | |
383 | ||
384 | ret = i2c_transfer(data->client->adapter, &msg, 1); | |
385 | if (ret == 1) { | |
386 | ret = 0; | |
387 | } else { | |
388 | ret = ret < 0 ? ret : -EIO; | |
389 | dev_err(&data->client->dev, "%s: i2c send failed (%d)\n", | |
390 | __func__, ret); | |
391 | } | |
392 | ||
393 | return ret; | |
394 | } | |
395 | ||
8efaa5e5 | 396 | static int mxt_lookup_bootloader_address(struct mxt_data *data, bool retry) |
f28a842d ND |
397 | { |
398 | u8 appmode = data->client->addr; | |
399 | u8 bootloader; | |
400 | ||
401 | switch (appmode) { | |
402 | case 0x4a: | |
403 | case 0x4b: | |
44a0bab2 | 404 | /* Chips after 1664S use different scheme */ |
8efaa5e5 | 405 | if (retry || data->info.family_id >= 0xa2) { |
44a0bab2 ND |
406 | bootloader = appmode - 0x24; |
407 | break; | |
408 | } | |
409 | /* Fall through for normal case */ | |
f28a842d ND |
410 | case 0x4c: |
411 | case 0x4d: | |
412 | case 0x5a: | |
413 | case 0x5b: | |
414 | bootloader = appmode - 0x26; | |
415 | break; | |
6cd1ab0f | 416 | |
f28a842d ND |
417 | default: |
418 | dev_err(&data->client->dev, | |
419 | "Appmode i2c address 0x%02x not found\n", | |
420 | appmode); | |
421 | return -EINVAL; | |
422 | } | |
423 | ||
424 | data->bootloader_addr = bootloader; | |
425 | return 0; | |
426 | } | |
427 | ||
6cd1ab0f | 428 | static int mxt_probe_bootloader(struct mxt_data *data, bool alt_address) |
a9fdd1e6 ND |
429 | { |
430 | struct device *dev = &data->client->dev; | |
6cd1ab0f | 431 | int error; |
a9fdd1e6 ND |
432 | u8 val; |
433 | bool crc_failure; | |
434 | ||
6cd1ab0f DT |
435 | error = mxt_lookup_bootloader_address(data, alt_address); |
436 | if (error) | |
437 | return error; | |
a9fdd1e6 | 438 | |
6cd1ab0f DT |
439 | error = mxt_bootloader_read(data, &val, 1); |
440 | if (error) | |
441 | return error; | |
a9fdd1e6 ND |
442 | |
443 | /* Check app crc fail mode */ | |
444 | crc_failure = (val & ~MXT_BOOT_STATUS_MASK) == MXT_APP_CRC_FAIL; | |
445 | ||
446 | dev_err(dev, "Detected bootloader, status:%02X%s\n", | |
447 | val, crc_failure ? ", APP_CRC_FAIL" : ""); | |
448 | ||
449 | return 0; | |
450 | } | |
451 | ||
e57a66aa ND |
452 | static u8 mxt_get_bootloader_version(struct mxt_data *data, u8 val) |
453 | { | |
454 | struct device *dev = &data->client->dev; | |
455 | u8 buf[3]; | |
456 | ||
457 | if (val & MXT_BOOT_EXTENDED_ID) { | |
458 | if (mxt_bootloader_read(data, &buf[0], 3) != 0) { | |
459 | dev_err(dev, "%s: i2c failure\n", __func__); | |
68807a0c | 460 | return val; |
e57a66aa ND |
461 | } |
462 | ||
463 | dev_dbg(dev, "Bootloader ID:%d Version:%d\n", buf[1], buf[2]); | |
464 | ||
465 | return buf[0]; | |
466 | } else { | |
467 | dev_dbg(dev, "Bootloader ID:%d\n", val & MXT_BOOT_ID_MASK); | |
468 | ||
469 | return val; | |
470 | } | |
471 | } | |
472 | ||
385deb96 ND |
473 | static int mxt_check_bootloader(struct mxt_data *data, unsigned int state, |
474 | bool wait) | |
4cf51c38 | 475 | { |
f28a842d | 476 | struct device *dev = &data->client->dev; |
4cf51c38 | 477 | u8 val; |
d79e7e47 | 478 | int ret; |
4cf51c38 JS |
479 | |
480 | recheck: | |
385deb96 | 481 | if (wait) { |
d79e7e47 BL |
482 | /* |
483 | * In application update mode, the interrupt | |
484 | * line signals state transitions. We must wait for the | |
485 | * CHG assertion before reading the status byte. | |
486 | * Once the status byte has been read, the line is deasserted. | |
487 | */ | |
a4a2ef46 IV |
488 | ret = mxt_wait_for_completion(data, &data->bl_completion, |
489 | MXT_FW_CHG_TIMEOUT); | |
d79e7e47 BL |
490 | if (ret) { |
491 | /* | |
492 | * TODO: handle -ERESTARTSYS better by terminating | |
493 | * fw update process before returning to userspace | |
494 | * by writing length 0x000 to device (iff we are in | |
495 | * WAITING_FRAME_DATA state). | |
496 | */ | |
f28a842d | 497 | dev_err(dev, "Update wait error %d\n", ret); |
d79e7e47 BL |
498 | return ret; |
499 | } | |
500 | } | |
501 | ||
f28a842d ND |
502 | ret = mxt_bootloader_read(data, &val, 1); |
503 | if (ret) | |
504 | return ret; | |
4cf51c38 | 505 | |
e57a66aa ND |
506 | if (state == MXT_WAITING_BOOTLOAD_CMD) |
507 | val = mxt_get_bootloader_version(data, val); | |
508 | ||
4cf51c38 | 509 | switch (state) { |
7686b108 IV |
510 | case MXT_WAITING_BOOTLOAD_CMD: |
511 | case MXT_WAITING_FRAME_DATA: | |
a9fdd1e6 | 512 | case MXT_APP_CRC_FAIL: |
7686b108 | 513 | val &= ~MXT_BOOT_STATUS_MASK; |
4cf51c38 | 514 | break; |
7686b108 | 515 | case MXT_FRAME_CRC_PASS: |
f943c74a | 516 | if (val == MXT_FRAME_CRC_CHECK) { |
4cf51c38 | 517 | goto recheck; |
f943c74a ND |
518 | } else if (val == MXT_FRAME_CRC_FAIL) { |
519 | dev_err(dev, "Bootloader CRC fail\n"); | |
520 | return -EINVAL; | |
521 | } | |
4cf51c38 JS |
522 | break; |
523 | default: | |
524 | return -EINVAL; | |
525 | } | |
526 | ||
527 | if (val != state) { | |
f28a842d | 528 | dev_err(dev, "Invalid bootloader state %02X != %02X\n", |
7bed6805 | 529 | val, state); |
4cf51c38 JS |
530 | return -EINVAL; |
531 | } | |
532 | ||
533 | return 0; | |
534 | } | |
535 | ||
8efaa5e5 | 536 | static int mxt_send_bootloader_cmd(struct mxt_data *data, bool unlock) |
4cf51c38 | 537 | { |
f28a842d | 538 | int ret; |
4cf51c38 JS |
539 | u8 buf[2]; |
540 | ||
8efaa5e5 ND |
541 | if (unlock) { |
542 | buf[0] = MXT_UNLOCK_CMD_LSB; | |
543 | buf[1] = MXT_UNLOCK_CMD_MSB; | |
544 | } else { | |
545 | buf[0] = 0x01; | |
546 | buf[1] = 0x01; | |
547 | } | |
4cf51c38 | 548 | |
f28a842d ND |
549 | ret = mxt_bootloader_write(data, buf, 2); |
550 | if (ret) | |
551 | return ret; | |
4cf51c38 JS |
552 | |
553 | return 0; | |
554 | } | |
555 | ||
7686b108 | 556 | static int __mxt_read_reg(struct i2c_client *client, |
4cf51c38 JS |
557 | u16 reg, u16 len, void *val) |
558 | { | |
559 | struct i2c_msg xfer[2]; | |
560 | u8 buf[2]; | |
771733e3 | 561 | int ret; |
4cf51c38 JS |
562 | |
563 | buf[0] = reg & 0xff; | |
564 | buf[1] = (reg >> 8) & 0xff; | |
565 | ||
566 | /* Write register */ | |
567 | xfer[0].addr = client->addr; | |
568 | xfer[0].flags = 0; | |
569 | xfer[0].len = 2; | |
570 | xfer[0].buf = buf; | |
571 | ||
572 | /* Read data */ | |
573 | xfer[1].addr = client->addr; | |
574 | xfer[1].flags = I2C_M_RD; | |
575 | xfer[1].len = len; | |
576 | xfer[1].buf = val; | |
577 | ||
771733e3 DK |
578 | ret = i2c_transfer(client->adapter, xfer, 2); |
579 | if (ret == 2) { | |
580 | ret = 0; | |
581 | } else { | |
582 | if (ret >= 0) | |
583 | ret = -EIO; | |
584 | dev_err(&client->dev, "%s: i2c transfer failed (%d)\n", | |
585 | __func__, ret); | |
4cf51c38 JS |
586 | } |
587 | ||
771733e3 | 588 | return ret; |
4cf51c38 JS |
589 | } |
590 | ||
9638ab7c DK |
591 | static int __mxt_write_reg(struct i2c_client *client, u16 reg, u16 len, |
592 | const void *val) | |
4cf51c38 | 593 | { |
9638ab7c DK |
594 | u8 *buf; |
595 | size_t count; | |
771733e3 | 596 | int ret; |
4cf51c38 | 597 | |
9638ab7c DK |
598 | count = len + 2; |
599 | buf = kmalloc(count, GFP_KERNEL); | |
600 | if (!buf) | |
601 | return -ENOMEM; | |
4cf51c38 JS |
602 | |
603 | buf[0] = reg & 0xff; | |
604 | buf[1] = (reg >> 8) & 0xff; | |
9638ab7c | 605 | memcpy(&buf[2], val, len); |
4cf51c38 | 606 | |
9638ab7c DK |
607 | ret = i2c_master_send(client, buf, count); |
608 | if (ret == count) { | |
771733e3 DK |
609 | ret = 0; |
610 | } else { | |
611 | if (ret >= 0) | |
612 | ret = -EIO; | |
613 | dev_err(&client->dev, "%s: i2c send failed (%d)\n", | |
614 | __func__, ret); | |
4cf51c38 JS |
615 | } |
616 | ||
9638ab7c | 617 | kfree(buf); |
771733e3 | 618 | return ret; |
4cf51c38 JS |
619 | } |
620 | ||
9638ab7c | 621 | static int mxt_write_reg(struct i2c_client *client, u16 reg, u8 val) |
4cf51c38 | 622 | { |
9638ab7c | 623 | return __mxt_write_reg(client, reg, 1, &val); |
4cf51c38 JS |
624 | } |
625 | ||
7686b108 IV |
626 | static struct mxt_object * |
627 | mxt_get_object(struct mxt_data *data, u8 type) | |
4cf51c38 | 628 | { |
7686b108 | 629 | struct mxt_object *object; |
4cf51c38 JS |
630 | int i; |
631 | ||
632 | for (i = 0; i < data->info.object_num; i++) { | |
633 | object = data->object_table + i; | |
634 | if (object->type == type) | |
635 | return object; | |
636 | } | |
637 | ||
50a77c65 | 638 | dev_warn(&data->client->dev, "Invalid object type T%u\n", type); |
4cf51c38 JS |
639 | return NULL; |
640 | } | |
641 | ||
497767d1 ND |
642 | static void mxt_proc_t6_messages(struct mxt_data *data, u8 *msg) |
643 | { | |
644 | struct device *dev = &data->client->dev; | |
645 | u8 status = msg[1]; | |
646 | u32 crc = msg[2] | (msg[3] << 8) | (msg[4] << 16); | |
647 | ||
648 | complete(&data->crc_completion); | |
649 | ||
650 | if (crc != data->config_crc) { | |
651 | data->config_crc = crc; | |
652 | dev_dbg(dev, "T6 Config Checksum: 0x%06X\n", crc); | |
653 | } | |
654 | ||
655 | /* Detect reset */ | |
656 | if (status & MXT_T6_STATUS_RESET) | |
657 | complete(&data->reset_completion); | |
658 | ||
659 | /* Output debug if status has changed */ | |
660 | if (status != data->t6_status) | |
661 | dev_dbg(dev, "T6 Status 0x%02X%s%s%s%s%s%s%s\n", | |
662 | status, | |
663 | status == 0 ? " OK" : "", | |
664 | status & MXT_T6_STATUS_RESET ? " RESET" : "", | |
665 | status & MXT_T6_STATUS_OFL ? " OFL" : "", | |
666 | status & MXT_T6_STATUS_SIGERR ? " SIGERR" : "", | |
667 | status & MXT_T6_STATUS_CAL ? " CAL" : "", | |
668 | status & MXT_T6_STATUS_CFGERR ? " CFGERR" : "", | |
669 | status & MXT_T6_STATUS_COMSERR ? " COMSERR" : ""); | |
670 | ||
671 | /* Save current status */ | |
672 | data->t6_status = status; | |
673 | } | |
674 | ||
5f3f9bc2 | 675 | static void mxt_input_button(struct mxt_data *data, u8 *message) |
22dfab7f DK |
676 | { |
677 | struct input_dev *input = data->input_dev; | |
fb5e4c3e | 678 | const struct mxt_platform_data *pdata = data->pdata; |
22dfab7f DK |
679 | bool button; |
680 | int i; | |
681 | ||
682 | /* Active-low switch */ | |
fb5e4c3e ND |
683 | for (i = 0; i < pdata->t19_num_keys; i++) { |
684 | if (pdata->t19_keymap[i] == KEY_RESERVED) | |
22dfab7f | 685 | continue; |
5f3f9bc2 | 686 | button = !(message[1] & (1 << i)); |
fb5e4c3e | 687 | input_report_key(input, pdata->t19_keymap[i], button); |
22dfab7f DK |
688 | } |
689 | } | |
690 | ||
b735fbe0 | 691 | static void mxt_input_sync(struct mxt_data *data) |
eef820dc | 692 | { |
b735fbe0 BL |
693 | input_mt_report_pointer_emulation(data->input_dev, |
694 | data->pdata->t19_num_keys); | |
695 | input_sync(data->input_dev); | |
eef820dc ND |
696 | } |
697 | ||
b9b05a89 | 698 | static void mxt_proc_t9_message(struct mxt_data *data, u8 *message) |
4cf51c38 | 699 | { |
4cf51c38 | 700 | struct device *dev = &data->client->dev; |
fba5bc31 | 701 | struct input_dev *input_dev = data->input_dev; |
5f3f9bc2 ND |
702 | int id; |
703 | u8 status; | |
4cf51c38 JS |
704 | int x; |
705 | int y; | |
706 | int area; | |
fea9e467 | 707 | int amplitude; |
4cf51c38 | 708 | |
5f3f9bc2 ND |
709 | id = message[0] - data->T9_reportid_min; |
710 | status = message[1]; | |
711 | x = (message[2] << 4) | ((message[4] >> 4) & 0xf); | |
712 | y = (message[3] << 4) | ((message[4] & 0xf)); | |
eef820dc ND |
713 | |
714 | /* Handle 10/12 bit switching */ | |
910d8051 | 715 | if (data->max_x < 1024) |
eef820dc | 716 | x >>= 2; |
910d8051 | 717 | if (data->max_y < 1024) |
eef820dc | 718 | y >>= 2; |
910d8051 | 719 | |
5f3f9bc2 ND |
720 | area = message[5]; |
721 | amplitude = message[6]; | |
4cf51c38 | 722 | |
b2e459b8 DK |
723 | dev_dbg(dev, |
724 | "[%u] %c%c%c%c%c%c%c%c x: %5u y: %5u area: %3u amp: %3u\n", | |
725 | id, | |
f3889ed1 ND |
726 | (status & MXT_T9_DETECT) ? 'D' : '.', |
727 | (status & MXT_T9_PRESS) ? 'P' : '.', | |
728 | (status & MXT_T9_RELEASE) ? 'R' : '.', | |
729 | (status & MXT_T9_MOVE) ? 'M' : '.', | |
730 | (status & MXT_T9_VECTOR) ? 'V' : '.', | |
731 | (status & MXT_T9_AMP) ? 'A' : '.', | |
732 | (status & MXT_T9_SUPPRESS) ? 'S' : '.', | |
733 | (status & MXT_T9_UNGRIP) ? 'U' : '.', | |
fea9e467 | 734 | x, y, area, amplitude); |
b2e459b8 | 735 | |
fba5bc31 | 736 | input_mt_slot(input_dev, id); |
fba5bc31 | 737 | |
f3889ed1 | 738 | if (status & MXT_T9_DETECT) { |
eef820dc ND |
739 | /* |
740 | * Multiple bits may be set if the host is slow to read | |
741 | * the status messages, indicating all the events that | |
742 | * have happened. | |
743 | */ | |
744 | if (status & MXT_T9_RELEASE) { | |
745 | input_mt_report_slot_state(input_dev, | |
746 | MT_TOOL_FINGER, 0); | |
b735fbe0 | 747 | mxt_input_sync(data); |
eef820dc ND |
748 | } |
749 | ||
750 | /* Touch active */ | |
751 | input_mt_report_slot_state(input_dev, MT_TOOL_FINGER, 1); | |
fba5bc31 DK |
752 | input_report_abs(input_dev, ABS_MT_POSITION_X, x); |
753 | input_report_abs(input_dev, ABS_MT_POSITION_Y, y); | |
fea9e467 | 754 | input_report_abs(input_dev, ABS_MT_PRESSURE, amplitude); |
fba5bc31 | 755 | input_report_abs(input_dev, ABS_MT_TOUCH_MAJOR, area); |
eef820dc ND |
756 | } else { |
757 | /* Touch no longer active, close out slot */ | |
758 | input_mt_report_slot_state(input_dev, MT_TOOL_FINGER, 0); | |
fba5bc31 | 759 | } |
b9b05a89 ND |
760 | |
761 | data->update_input = true; | |
4cf51c38 | 762 | } |
4cf51c38 | 763 | |
b9b05a89 | 764 | static int mxt_proc_message(struct mxt_data *data, u8 *message) |
04a79181 | 765 | { |
b9b05a89 ND |
766 | u8 report_id = message[0]; |
767 | ||
768 | if (report_id == MXT_RPTID_NOMSG) | |
769 | return 0; | |
770 | ||
771 | if (report_id == data->T6_reportid) { | |
772 | mxt_proc_t6_messages(data, message); | |
773 | } else if (!data->input_dev) { | |
774 | /* | |
775 | * Do not report events if input device | |
776 | * is not yet registered. | |
777 | */ | |
778 | mxt_dump_message(data, message); | |
779 | } else if (report_id >= data->T9_reportid_min | |
780 | && report_id <= data->T9_reportid_max) { | |
781 | mxt_proc_t9_message(data, message); | |
782 | } else if (report_id == data->T19_reportid) { | |
783 | mxt_input_button(data, message); | |
784 | data->update_input = true; | |
785 | } else { | |
786 | mxt_dump_message(data, message); | |
787 | } | |
788 | ||
789 | return 1; | |
4cf51c38 JS |
790 | } |
791 | ||
9d8dc3e5 | 792 | static int mxt_read_and_process_messages(struct mxt_data *data, u8 count) |
4cf51c38 | 793 | { |
4cf51c38 | 794 | struct device *dev = &data->client->dev; |
b9b05a89 | 795 | int ret; |
9d8dc3e5 ND |
796 | int i; |
797 | u8 num_valid = 0; | |
798 | ||
799 | /* Safety check for msg_buf */ | |
800 | if (count > data->max_reportid) | |
801 | return -EINVAL; | |
4cf51c38 | 802 | |
9d8dc3e5 | 803 | /* Process remaining messages if necessary */ |
b9b05a89 | 804 | ret = __mxt_read_reg(data->client, data->T5_address, |
9d8dc3e5 | 805 | data->T5_msg_size * count, data->msg_buf); |
b9b05a89 | 806 | if (ret) { |
9d8dc3e5 | 807 | dev_err(dev, "Failed to read %u messages (%d)\n", count, ret); |
b9b05a89 ND |
808 | return ret; |
809 | } | |
4cf51c38 | 810 | |
9d8dc3e5 ND |
811 | for (i = 0; i < count; i++) { |
812 | ret = mxt_proc_message(data, | |
813 | data->msg_buf + data->T5_msg_size * i); | |
814 | ||
815 | if (ret == 1) | |
816 | num_valid++; | |
817 | } | |
818 | ||
819 | /* return number of messages read */ | |
820 | return num_valid; | |
b9b05a89 | 821 | } |
4cf51c38 | 822 | |
9d8dc3e5 | 823 | static irqreturn_t mxt_process_messages_t44(struct mxt_data *data) |
b9b05a89 | 824 | { |
9d8dc3e5 | 825 | struct device *dev = &data->client->dev; |
b9b05a89 | 826 | int ret; |
9d8dc3e5 | 827 | u8 count, num_left; |
4cf51c38 | 828 | |
9d8dc3e5 ND |
829 | /* Read T44 and T5 together */ |
830 | ret = __mxt_read_reg(data->client, data->T44_address, | |
831 | data->T5_msg_size + 1, data->msg_buf); | |
832 | if (ret) { | |
833 | dev_err(dev, "Failed to read T44 and T5 (%d)\n", ret); | |
834 | return IRQ_NONE; | |
835 | } | |
836 | ||
837 | count = data->msg_buf[0]; | |
838 | ||
839 | if (count == 0) { | |
651b4608 ND |
840 | /* |
841 | * This condition is caused by the CHG line being configured | |
842 | * in Mode 0. It results in unnecessary I2C operations but it | |
843 | * is benign. | |
844 | */ | |
845 | dev_dbg(dev, "Interrupt triggered but zero messages\n"); | |
9d8dc3e5 ND |
846 | return IRQ_NONE; |
847 | } else if (count > data->max_reportid) { | |
848 | dev_err(dev, "T44 count %d exceeded max report id\n", count); | |
849 | count = data->max_reportid; | |
850 | } | |
851 | ||
852 | /* Process first message */ | |
853 | ret = mxt_proc_message(data, data->msg_buf + 1); | |
854 | if (ret < 0) { | |
855 | dev_warn(dev, "Unexpected invalid message\n"); | |
856 | return IRQ_NONE; | |
857 | } | |
858 | ||
859 | num_left = count - 1; | |
860 | ||
861 | /* Process remaining messages if necessary */ | |
862 | if (num_left) { | |
863 | ret = mxt_read_and_process_messages(data, num_left); | |
b9b05a89 | 864 | if (ret < 0) |
9d8dc3e5 ND |
865 | goto end; |
866 | else if (ret != num_left) | |
867 | dev_warn(dev, "Unexpected invalid message\n"); | |
868 | } | |
869 | ||
870 | end: | |
871 | if (data->update_input) { | |
872 | mxt_input_sync(data); | |
873 | data->update_input = false; | |
874 | } | |
875 | ||
876 | return IRQ_HANDLED; | |
877 | } | |
878 | ||
879 | static int mxt_process_messages_until_invalid(struct mxt_data *data) | |
880 | { | |
881 | struct device *dev = &data->client->dev; | |
882 | int count, read; | |
883 | u8 tries = 2; | |
884 | ||
885 | count = data->max_reportid; | |
886 | ||
887 | /* Read messages until we force an invalid */ | |
888 | do { | |
889 | read = mxt_read_and_process_messages(data, count); | |
890 | if (read < count) | |
891 | return 0; | |
892 | } while (--tries); | |
893 | ||
894 | if (data->update_input) { | |
895 | mxt_input_sync(data); | |
896 | data->update_input = false; | |
897 | } | |
898 | ||
899 | dev_err(dev, "CHG pin isn't cleared\n"); | |
900 | return -EBUSY; | |
901 | } | |
902 | ||
903 | static irqreturn_t mxt_process_messages(struct mxt_data *data) | |
904 | { | |
905 | int total_handled, num_handled; | |
906 | u8 count = data->last_message_count; | |
907 | ||
908 | if (count < 1 || count > data->max_reportid) | |
909 | count = 1; | |
910 | ||
911 | /* include final invalid message */ | |
912 | total_handled = mxt_read_and_process_messages(data, count + 1); | |
913 | if (total_handled < 0) | |
914 | return IRQ_NONE; | |
915 | /* if there were invalid messages, then we are done */ | |
916 | else if (total_handled <= count) | |
917 | goto update_count; | |
918 | ||
919 | /* keep reading two msgs until one is invalid or reportid limit */ | |
920 | do { | |
921 | num_handled = mxt_read_and_process_messages(data, 2); | |
922 | if (num_handled < 0) | |
b9b05a89 | 923 | return IRQ_NONE; |
9d8dc3e5 ND |
924 | |
925 | total_handled += num_handled; | |
926 | ||
927 | if (num_handled < 2) | |
928 | break; | |
929 | } while (total_handled < data->num_touchids); | |
930 | ||
931 | update_count: | |
932 | data->last_message_count = total_handled; | |
b9b05a89 ND |
933 | |
934 | if (data->update_input) { | |
b735fbe0 | 935 | mxt_input_sync(data); |
b9b05a89 ND |
936 | data->update_input = false; |
937 | } | |
64464ae8 | 938 | |
4cf51c38 JS |
939 | return IRQ_HANDLED; |
940 | } | |
941 | ||
d79e7e47 BL |
942 | static irqreturn_t mxt_interrupt(int irq, void *dev_id) |
943 | { | |
944 | struct mxt_data *data = dev_id; | |
945 | ||
946 | if (data->in_bootloader) { | |
947 | /* bootloader state transition completion */ | |
948 | complete(&data->bl_completion); | |
949 | return IRQ_HANDLED; | |
950 | } | |
951 | ||
dd24dcf5 ND |
952 | if (!data->object_table) |
953 | return IRQ_HANDLED; | |
954 | ||
9d8dc3e5 ND |
955 | if (data->T44_address) { |
956 | return mxt_process_messages_t44(data); | |
957 | } else { | |
958 | return mxt_process_messages(data); | |
959 | } | |
d79e7e47 BL |
960 | } |
961 | ||
a4a2ef46 IV |
962 | static int mxt_t6_command(struct mxt_data *data, u16 cmd_offset, |
963 | u8 value, bool wait) | |
964 | { | |
965 | u16 reg; | |
966 | u8 command_register; | |
967 | int timeout_counter = 0; | |
968 | int ret; | |
969 | ||
970 | reg = data->T6_address + cmd_offset; | |
971 | ||
972 | ret = mxt_write_reg(data->client, reg, value); | |
973 | if (ret) | |
974 | return ret; | |
975 | ||
976 | if (!wait) | |
977 | return 0; | |
978 | ||
979 | do { | |
980 | msleep(20); | |
981 | ret = __mxt_read_reg(data->client, reg, 1, &command_register); | |
982 | if (ret) | |
983 | return ret; | |
984 | } while (command_register != 0 && timeout_counter++ <= 100); | |
985 | ||
986 | if (timeout_counter > 100) { | |
987 | dev_err(&data->client->dev, "Command failed!\n"); | |
988 | return -EIO; | |
989 | } | |
990 | ||
991 | return 0; | |
992 | } | |
993 | ||
994 | static int mxt_soft_reset(struct mxt_data *data) | |
995 | { | |
996 | struct device *dev = &data->client->dev; | |
997 | int ret = 0; | |
998 | ||
999 | dev_info(dev, "Resetting chip\n"); | |
1000 | ||
1001 | reinit_completion(&data->reset_completion); | |
1002 | ||
1003 | ret = mxt_t6_command(data, MXT_COMMAND_RESET, MXT_RESET_VALUE, false); | |
1004 | if (ret) | |
1005 | return ret; | |
1006 | ||
1007 | ret = mxt_wait_for_completion(data, &data->reset_completion, | |
1008 | MXT_RESET_TIMEOUT); | |
1009 | if (ret) | |
1010 | return ret; | |
1011 | ||
1012 | return 0; | |
1013 | } | |
1014 | ||
c3f78043 ND |
1015 | static void mxt_update_crc(struct mxt_data *data, u8 cmd, u8 value) |
1016 | { | |
1017 | /* | |
1018 | * On failure, CRC is set to 0 and config will always be | |
1019 | * downloaded. | |
1020 | */ | |
1021 | data->config_crc = 0; | |
1022 | reinit_completion(&data->crc_completion); | |
1023 | ||
1024 | mxt_t6_command(data, cmd, value, true); | |
1025 | ||
1026 | /* | |
1027 | * Wait for crc message. On failure, CRC is set to 0 and config will | |
1028 | * always be downloaded. | |
1029 | */ | |
1030 | mxt_wait_for_completion(data, &data->crc_completion, MXT_CRC_TIMEOUT); | |
1031 | } | |
1032 | ||
4ce6fa01 ND |
1033 | static void mxt_calc_crc24(u32 *crc, u8 firstbyte, u8 secondbyte) |
1034 | { | |
1035 | static const unsigned int crcpoly = 0x80001B; | |
1036 | u32 result; | |
1037 | u32 data_word; | |
1038 | ||
1039 | data_word = (secondbyte << 8) | firstbyte; | |
1040 | result = ((*crc << 1) ^ data_word); | |
1041 | ||
1042 | if (result & 0x1000000) | |
1043 | result ^= crcpoly; | |
1044 | ||
1045 | *crc = result; | |
1046 | } | |
1047 | ||
1048 | static u32 mxt_calculate_crc(u8 *base, off_t start_off, off_t end_off) | |
1049 | { | |
1050 | u32 crc = 0; | |
1051 | u8 *ptr = base + start_off; | |
1052 | u8 *last_val = base + end_off - 1; | |
1053 | ||
1054 | if (end_off < start_off) | |
1055 | return -EINVAL; | |
1056 | ||
1057 | while (ptr < last_val) { | |
1058 | mxt_calc_crc24(&crc, *ptr, *(ptr + 1)); | |
1059 | ptr += 2; | |
1060 | } | |
1061 | ||
1062 | /* if len is odd, fill the last byte with 0 */ | |
1063 | if (ptr == last_val) | |
1064 | mxt_calc_crc24(&crc, *ptr, 0); | |
1065 | ||
1066 | /* Mask to 24-bit */ | |
1067 | crc &= 0x00FFFFFF; | |
1068 | ||
1069 | return crc; | |
1070 | } | |
1071 | ||
efdbd7ae DT |
1072 | static int mxt_prepare_cfg_mem(struct mxt_data *data, |
1073 | const struct firmware *cfg, | |
1074 | unsigned int data_pos, | |
1075 | unsigned int cfg_start_ofs, | |
1076 | u8 *config_mem, | |
1077 | size_t config_mem_size) | |
1078 | { | |
1079 | struct device *dev = &data->client->dev; | |
1080 | struct mxt_object *object; | |
1081 | unsigned int type, instance, size, byte_offset; | |
1082 | int offset; | |
1083 | int ret; | |
1084 | int i; | |
1085 | u16 reg; | |
1086 | u8 val; | |
1087 | ||
1088 | while (data_pos < cfg->size) { | |
1089 | /* Read type, instance, length */ | |
1090 | ret = sscanf(cfg->data + data_pos, "%x %x %x%n", | |
1091 | &type, &instance, &size, &offset); | |
1092 | if (ret == 0) { | |
1093 | /* EOF */ | |
1094 | break; | |
1095 | } else if (ret != 3) { | |
1096 | dev_err(dev, "Bad format: failed to parse object\n"); | |
1097 | return -EINVAL; | |
1098 | } | |
1099 | data_pos += offset; | |
1100 | ||
1101 | object = mxt_get_object(data, type); | |
1102 | if (!object) { | |
1103 | /* Skip object */ | |
1104 | for (i = 0; i < size; i++) { | |
1105 | ret = sscanf(cfg->data + data_pos, "%hhx%n", | |
041fa159 DT |
1106 | &val, &offset); |
1107 | if (ret != 1) { | |
1108 | dev_err(dev, "Bad format in T%d at %d\n", | |
1109 | type, i); | |
1110 | return -EINVAL; | |
1111 | } | |
efdbd7ae DT |
1112 | data_pos += offset; |
1113 | } | |
1114 | continue; | |
1115 | } | |
1116 | ||
1117 | if (size > mxt_obj_size(object)) { | |
1118 | /* | |
1119 | * Either we are in fallback mode due to wrong | |
1120 | * config or config from a later fw version, | |
1121 | * or the file is corrupt or hand-edited. | |
1122 | */ | |
1123 | dev_warn(dev, "Discarding %zu byte(s) in T%u\n", | |
1124 | size - mxt_obj_size(object), type); | |
1125 | } else if (mxt_obj_size(object) > size) { | |
1126 | /* | |
1127 | * If firmware is upgraded, new bytes may be added to | |
1128 | * end of objects. It is generally forward compatible | |
1129 | * to zero these bytes - previous behaviour will be | |
1130 | * retained. However this does invalidate the CRC and | |
1131 | * will force fallback mode until the configuration is | |
1132 | * updated. We warn here but do nothing else - the | |
1133 | * malloc has zeroed the entire configuration. | |
1134 | */ | |
1135 | dev_warn(dev, "Zeroing %zu byte(s) in T%d\n", | |
1136 | mxt_obj_size(object) - size, type); | |
1137 | } | |
1138 | ||
1139 | if (instance >= mxt_obj_instances(object)) { | |
1140 | dev_err(dev, "Object instances exceeded!\n"); | |
1141 | return -EINVAL; | |
1142 | } | |
1143 | ||
1144 | reg = object->start_address + mxt_obj_size(object) * instance; | |
1145 | ||
1146 | for (i = 0; i < size; i++) { | |
1147 | ret = sscanf(cfg->data + data_pos, "%hhx%n", | |
1148 | &val, | |
1149 | &offset); | |
1150 | if (ret != 1) { | |
041fa159 DT |
1151 | dev_err(dev, "Bad format in T%d at %d\n", |
1152 | type, i); | |
efdbd7ae DT |
1153 | return -EINVAL; |
1154 | } | |
1155 | data_pos += offset; | |
1156 | ||
1157 | if (i > mxt_obj_size(object)) | |
1158 | continue; | |
1159 | ||
1160 | byte_offset = reg + i - cfg_start_ofs; | |
1161 | ||
041fa159 | 1162 | if (byte_offset >= 0 && byte_offset < config_mem_size) { |
efdbd7ae DT |
1163 | *(config_mem + byte_offset) = val; |
1164 | } else { | |
1165 | dev_err(dev, "Bad object: reg:%d, T%d, ofs=%d\n", | |
1166 | reg, object->type, byte_offset); | |
1167 | return -EINVAL; | |
1168 | } | |
1169 | } | |
1170 | } | |
1171 | ||
1172 | return 0; | |
1173 | } | |
1174 | ||
1175 | static int mxt_upload_cfg_mem(struct mxt_data *data, unsigned int cfg_start, | |
1176 | u8 *config_mem, size_t config_mem_size) | |
1177 | { | |
1178 | unsigned int byte_offset = 0; | |
1179 | int error; | |
1180 | ||
1181 | /* Write configuration as blocks */ | |
1182 | while (byte_offset < config_mem_size) { | |
1183 | unsigned int size = config_mem_size - byte_offset; | |
1184 | ||
1185 | if (size > MXT_MAX_BLOCK_WRITE) | |
1186 | size = MXT_MAX_BLOCK_WRITE; | |
1187 | ||
1188 | error = __mxt_write_reg(data->client, | |
1189 | cfg_start + byte_offset, | |
1190 | size, config_mem + byte_offset); | |
1191 | if (error) { | |
1192 | dev_err(&data->client->dev, | |
1193 | "Config write error, ret=%d\n", error); | |
1194 | return error; | |
1195 | } | |
1196 | ||
1197 | byte_offset += size; | |
1198 | } | |
1199 | ||
1200 | return 0; | |
1201 | } | |
1202 | ||
50a77c65 ND |
1203 | /* |
1204 | * mxt_update_cfg - download configuration to chip | |
1205 | * | |
1206 | * Atmel Raw Config File Format | |
1207 | * | |
1208 | * The first four lines of the raw config file contain: | |
1209 | * 1) Version | |
1210 | * 2) Chip ID Information (first 7 bytes of device memory) | |
1211 | * 3) Chip Information Block 24-bit CRC Checksum | |
1212 | * 4) Chip Configuration 24-bit CRC Checksum | |
1213 | * | |
1214 | * The rest of the file consists of one line per object instance: | |
1215 | * <TYPE> <INSTANCE> <SIZE> <CONTENTS> | |
1216 | * | |
1217 | * <TYPE> - 2-byte object type as hex | |
1218 | * <INSTANCE> - 2-byte object instance number as hex | |
1219 | * <SIZE> - 2-byte object size as hex | |
1220 | * <CONTENTS> - array of <SIZE> 1-byte hex values | |
1221 | */ | |
1222 | static int mxt_update_cfg(struct mxt_data *data, const struct firmware *cfg) | |
4cf51c38 | 1223 | { |
4cf51c38 | 1224 | struct device *dev = &data->client->dev; |
50a77c65 | 1225 | struct mxt_info cfg_info; |
cf94bc09 | 1226 | int ret; |
50a77c65 | 1227 | int offset; |
4ce6fa01 | 1228 | int data_pos; |
50a77c65 | 1229 | int i; |
4ce6fa01 ND |
1230 | int cfg_start_ofs; |
1231 | u32 info_crc, config_crc, calculated_crc; | |
1232 | u8 *config_mem; | |
1233 | size_t config_mem_size; | |
4cf51c38 | 1234 | |
50a77c65 ND |
1235 | mxt_update_crc(data, MXT_COMMAND_REPORTALL, 1); |
1236 | ||
1237 | if (strncmp(cfg->data, MXT_CFG_MAGIC, strlen(MXT_CFG_MAGIC))) { | |
1238 | dev_err(dev, "Unrecognised config file\n"); | |
efdbd7ae | 1239 | return -EINVAL; |
4cf51c38 JS |
1240 | } |
1241 | ||
4ce6fa01 | 1242 | data_pos = strlen(MXT_CFG_MAGIC); |
50a77c65 ND |
1243 | |
1244 | /* Load information block and check */ | |
1245 | for (i = 0; i < sizeof(struct mxt_info); i++) { | |
4ce6fa01 | 1246 | ret = sscanf(cfg->data + data_pos, "%hhx%n", |
50a77c65 ND |
1247 | (unsigned char *)&cfg_info + i, |
1248 | &offset); | |
1249 | if (ret != 1) { | |
1250 | dev_err(dev, "Bad format\n"); | |
efdbd7ae | 1251 | return -EINVAL; |
50a77c65 | 1252 | } |
c3f78043 | 1253 | |
4ce6fa01 | 1254 | data_pos += offset; |
c3f78043 ND |
1255 | } |
1256 | ||
50a77c65 ND |
1257 | if (cfg_info.family_id != data->info.family_id) { |
1258 | dev_err(dev, "Family ID mismatch!\n"); | |
efdbd7ae | 1259 | return -EINVAL; |
50a77c65 | 1260 | } |
c3f78043 | 1261 | |
50a77c65 ND |
1262 | if (cfg_info.variant_id != data->info.variant_id) { |
1263 | dev_err(dev, "Variant ID mismatch!\n"); | |
efdbd7ae | 1264 | return -EINVAL; |
50a77c65 | 1265 | } |
4cf51c38 | 1266 | |
4ce6fa01 ND |
1267 | /* Read CRCs */ |
1268 | ret = sscanf(cfg->data + data_pos, "%x%n", &info_crc, &offset); | |
50a77c65 ND |
1269 | if (ret != 1) { |
1270 | dev_err(dev, "Bad format: failed to parse Info CRC\n"); | |
efdbd7ae | 1271 | return -EINVAL; |
50a77c65 | 1272 | } |
4ce6fa01 | 1273 | data_pos += offset; |
50a77c65 | 1274 | |
4ce6fa01 | 1275 | ret = sscanf(cfg->data + data_pos, "%x%n", &config_crc, &offset); |
50a77c65 ND |
1276 | if (ret != 1) { |
1277 | dev_err(dev, "Bad format: failed to parse Config CRC\n"); | |
efdbd7ae | 1278 | return -EINVAL; |
50a77c65 | 1279 | } |
4ce6fa01 | 1280 | data_pos += offset; |
50a77c65 | 1281 | |
4ce6fa01 ND |
1282 | /* |
1283 | * The Info Block CRC is calculated over mxt_info and the object | |
1284 | * table. If it does not match then we are trying to load the | |
1285 | * configuration from a different chip or firmware version, so | |
1286 | * the configuration CRC is invalid anyway. | |
1287 | */ | |
1288 | if (info_crc == data->info_crc) { | |
1289 | if (config_crc == 0 || data->config_crc == 0) { | |
1290 | dev_info(dev, "CRC zero, attempting to apply config\n"); | |
1291 | } else if (config_crc == data->config_crc) { | |
1292 | dev_dbg(dev, "Config CRC 0x%06X: OK\n", | |
1293 | data->config_crc); | |
efdbd7ae | 1294 | return 0; |
4ce6fa01 ND |
1295 | } else { |
1296 | dev_info(dev, "Config CRC 0x%06X: does not match file 0x%06X\n", | |
1297 | data->config_crc, config_crc); | |
1298 | } | |
1299 | } else { | |
1300 | dev_warn(dev, | |
1301 | "Warning: Info CRC error - device=0x%06X file=0x%06X\n", | |
1302 | data->info_crc, info_crc); | |
50a77c65 ND |
1303 | } |
1304 | ||
4ce6fa01 ND |
1305 | /* Malloc memory to store configuration */ |
1306 | cfg_start_ofs = MXT_OBJECT_START + | |
1307 | data->info.object_num * sizeof(struct mxt_object) + | |
1308 | MXT_INFO_CHECKSUM_SIZE; | |
1309 | config_mem_size = data->mem_size - cfg_start_ofs; | |
1310 | config_mem = kzalloc(config_mem_size, GFP_KERNEL); | |
1311 | if (!config_mem) { | |
1312 | dev_err(dev, "Failed to allocate memory\n"); | |
efdbd7ae | 1313 | return -ENOMEM; |
4ce6fa01 | 1314 | } |
50a77c65 | 1315 | |
efdbd7ae DT |
1316 | ret = mxt_prepare_cfg_mem(data, cfg, data_pos, cfg_start_ofs, |
1317 | config_mem, config_mem_size); | |
1318 | if (ret) | |
1319 | goto release_mem; | |
50a77c65 | 1320 | |
4ce6fa01 ND |
1321 | /* Calculate crc of the received configs (not the raw config file) */ |
1322 | if (data->T7_address < cfg_start_ofs) { | |
1323 | dev_err(dev, "Bad T7 address, T7addr = %x, config offset %x\n", | |
1324 | data->T7_address, cfg_start_ofs); | |
1325 | ret = 0; | |
1326 | goto release_mem; | |
1327 | } | |
50a77c65 | 1328 | |
4ce6fa01 ND |
1329 | calculated_crc = mxt_calculate_crc(config_mem, |
1330 | data->T7_address - cfg_start_ofs, | |
1331 | config_mem_size); | |
1332 | ||
efdbd7ae | 1333 | if (config_crc > 0 && config_crc != calculated_crc) |
4ce6fa01 ND |
1334 | dev_warn(dev, "Config CRC error, calculated=%06X, file=%06X\n", |
1335 | calculated_crc, config_crc); | |
1336 | ||
efdbd7ae DT |
1337 | ret = mxt_upload_cfg_mem(data, cfg_start_ofs, |
1338 | config_mem, config_mem_size); | |
1339 | if (ret) | |
1340 | goto release_mem; | |
4cf51c38 | 1341 | |
c3f78043 ND |
1342 | mxt_update_crc(data, MXT_COMMAND_BACKUPNV, MXT_BACKUP_VALUE); |
1343 | ||
1344 | ret = mxt_soft_reset(data); | |
1345 | if (ret) | |
4ce6fa01 | 1346 | goto release_mem; |
c3f78043 ND |
1347 | |
1348 | dev_info(dev, "Config successfully updated\n"); | |
1349 | ||
4ce6fa01 ND |
1350 | release_mem: |
1351 | kfree(config_mem); | |
50a77c65 | 1352 | return ret; |
4cf51c38 JS |
1353 | } |
1354 | ||
dd24dcf5 ND |
1355 | static int mxt_acquire_irq(struct mxt_data *data) |
1356 | { | |
1357 | int error; | |
1358 | ||
1359 | enable_irq(data->irq); | |
1360 | ||
9d8dc3e5 | 1361 | error = mxt_process_messages_until_invalid(data); |
dd24dcf5 ND |
1362 | if (error) |
1363 | return error; | |
1364 | ||
1365 | return 0; | |
1366 | } | |
1367 | ||
7686b108 | 1368 | static int mxt_get_info(struct mxt_data *data) |
4cf51c38 JS |
1369 | { |
1370 | struct i2c_client *client = data->client; | |
7686b108 | 1371 | struct mxt_info *info = &data->info; |
4cf51c38 | 1372 | int error; |
4cf51c38 | 1373 | |
23003a84 DK |
1374 | /* Read 7-byte info block starting at address 0 */ |
1375 | error = __mxt_read_reg(client, MXT_INFO, sizeof(*info), info); | |
4cf51c38 JS |
1376 | if (error) |
1377 | return error; | |
4cf51c38 JS |
1378 | |
1379 | return 0; | |
1380 | } | |
1381 | ||
58e4aeee | 1382 | static void mxt_free_input_device(struct mxt_data *data) |
5f3f9bc2 | 1383 | { |
58e4aeee SW |
1384 | if (data->input_dev) { |
1385 | input_unregister_device(data->input_dev); | |
1386 | data->input_dev = NULL; | |
1387 | } | |
1388 | } | |
5f3f9bc2 | 1389 | |
58e4aeee SW |
1390 | static void mxt_free_object_table(struct mxt_data *data) |
1391 | { | |
5f3f9bc2 ND |
1392 | kfree(data->object_table); |
1393 | data->object_table = NULL; | |
1394 | kfree(data->msg_buf); | |
1395 | data->msg_buf = NULL; | |
b9b05a89 | 1396 | data->T5_address = 0; |
5f3f9bc2 ND |
1397 | data->T5_msg_size = 0; |
1398 | data->T6_reportid = 0; | |
1399 | data->T7_address = 0; | |
1400 | data->T9_reportid_min = 0; | |
1401 | data->T9_reportid_max = 0; | |
1402 | data->T19_reportid = 0; | |
9d8dc3e5 ND |
1403 | data->T44_address = 0; |
1404 | data->max_reportid = 0; | |
5f3f9bc2 ND |
1405 | } |
1406 | ||
7686b108 | 1407 | static int mxt_get_object_table(struct mxt_data *data) |
4cf51c38 | 1408 | { |
333e5a9a DK |
1409 | struct i2c_client *client = data->client; |
1410 | size_t table_size; | |
dd24dcf5 | 1411 | struct mxt_object *object_table; |
4cf51c38 JS |
1412 | int error; |
1413 | int i; | |
333e5a9a | 1414 | u8 reportid; |
4ce6fa01 | 1415 | u16 end_address; |
333e5a9a DK |
1416 | |
1417 | table_size = data->info.object_num * sizeof(struct mxt_object); | |
dd24dcf5 ND |
1418 | object_table = kzalloc(table_size, GFP_KERNEL); |
1419 | if (!object_table) { | |
1420 | dev_err(&data->client->dev, "Failed to allocate memory\n"); | |
1421 | return -ENOMEM; | |
1422 | } | |
1423 | ||
333e5a9a | 1424 | error = __mxt_read_reg(client, MXT_OBJECT_START, table_size, |
dd24dcf5 ND |
1425 | object_table); |
1426 | if (error) { | |
1427 | kfree(object_table); | |
333e5a9a | 1428 | return error; |
dd24dcf5 | 1429 | } |
4cf51c38 | 1430 | |
333e5a9a DK |
1431 | /* Valid Report IDs start counting from 1 */ |
1432 | reportid = 1; | |
4ce6fa01 | 1433 | data->mem_size = 0; |
4cf51c38 | 1434 | for (i = 0; i < data->info.object_num; i++) { |
dd24dcf5 | 1435 | struct mxt_object *object = object_table + i; |
333e5a9a | 1436 | u8 min_id, max_id; |
4cf51c38 | 1437 | |
333e5a9a | 1438 | le16_to_cpus(&object->start_address); |
4cf51c38 JS |
1439 | |
1440 | if (object->num_report_ids) { | |
333e5a9a | 1441 | min_id = reportid; |
4cf51c38 | 1442 | reportid += object->num_report_ids * |
1e0c0c5b | 1443 | mxt_obj_instances(object); |
333e5a9a DK |
1444 | max_id = reportid - 1; |
1445 | } else { | |
1446 | min_id = 0; | |
1447 | max_id = 0; | |
1448 | } | |
1449 | ||
1450 | dev_dbg(&data->client->dev, | |
7bed6805 | 1451 | "T%u Start:%u Size:%zu Instances:%zu Report IDs:%u-%u\n", |
1e0c0c5b DK |
1452 | object->type, object->start_address, |
1453 | mxt_obj_size(object), mxt_obj_instances(object), | |
1454 | min_id, max_id); | |
333e5a9a DK |
1455 | |
1456 | switch (object->type) { | |
5f3f9bc2 | 1457 | case MXT_GEN_MESSAGE_T5: |
437d4f37 ND |
1458 | if (data->info.family_id == 0x80 && |
1459 | data->info.version < 0x20) { | |
9d8dc3e5 | 1460 | /* |
437d4f37 ND |
1461 | * On mXT224 firmware versions prior to V2.0 |
1462 | * read and discard unused CRC byte otherwise | |
1463 | * DMA reads are misaligned. | |
9d8dc3e5 ND |
1464 | */ |
1465 | data->T5_msg_size = mxt_obj_size(object); | |
1466 | } else { | |
1467 | /* CRC not enabled, so skip last byte */ | |
1468 | data->T5_msg_size = mxt_obj_size(object) - 1; | |
1469 | } | |
b9b05a89 | 1470 | data->T5_address = object->start_address; |
041fa159 | 1471 | break; |
fdf80421 DK |
1472 | case MXT_GEN_COMMAND_T6: |
1473 | data->T6_reportid = min_id; | |
a4a2ef46 | 1474 | data->T6_address = object->start_address; |
fdf80421 | 1475 | break; |
4ce6fa01 ND |
1476 | case MXT_GEN_POWER_T7: |
1477 | data->T7_address = object->start_address; | |
1478 | break; | |
333e5a9a DK |
1479 | case MXT_TOUCH_MULTI_T9: |
1480 | data->T9_reportid_min = min_id; | |
1481 | data->T9_reportid_max = max_id; | |
9d8dc3e5 ND |
1482 | data->num_touchids = object->num_report_ids |
1483 | * mxt_obj_instances(object); | |
1484 | break; | |
1485 | case MXT_SPT_MESSAGECOUNT_T44: | |
1486 | data->T44_address = object->start_address; | |
333e5a9a | 1487 | break; |
22dfab7f DK |
1488 | case MXT_SPT_GPIOPWM_T19: |
1489 | data->T19_reportid = min_id; | |
1490 | break; | |
4cf51c38 | 1491 | } |
4ce6fa01 ND |
1492 | |
1493 | end_address = object->start_address | |
1494 | + mxt_obj_size(object) * mxt_obj_instances(object) - 1; | |
1495 | ||
1496 | if (end_address >= data->mem_size) | |
1497 | data->mem_size = end_address + 1; | |
4cf51c38 JS |
1498 | } |
1499 | ||
9d8dc3e5 ND |
1500 | /* Store maximum reportid */ |
1501 | data->max_reportid = reportid; | |
1502 | ||
1503 | /* If T44 exists, T5 position has to be directly after */ | |
1504 | if (data->T44_address && (data->T5_address != data->T44_address + 1)) { | |
1505 | dev_err(&client->dev, "Invalid T44 position\n"); | |
1506 | error = -EINVAL; | |
1507 | goto free_object_table; | |
1508 | } | |
1509 | ||
1510 | data->msg_buf = kcalloc(data->max_reportid, | |
1511 | data->T5_msg_size, GFP_KERNEL); | |
5f3f9bc2 ND |
1512 | if (!data->msg_buf) { |
1513 | dev_err(&client->dev, "Failed to allocate message buffer\n"); | |
1514 | error = -ENOMEM; | |
1515 | goto free_object_table; | |
1516 | } | |
1517 | ||
dd24dcf5 ND |
1518 | data->object_table = object_table; |
1519 | ||
4cf51c38 | 1520 | return 0; |
4cf51c38 | 1521 | |
5f3f9bc2 ND |
1522 | free_object_table: |
1523 | mxt_free_object_table(data); | |
1524 | return error; | |
7d4fa100 DK |
1525 | } |
1526 | ||
61dc1aba ND |
1527 | static int mxt_read_t9_resolution(struct mxt_data *data) |
1528 | { | |
1529 | struct i2c_client *client = data->client; | |
1530 | int error; | |
1531 | struct t9_range range; | |
1532 | unsigned char orient; | |
1533 | struct mxt_object *object; | |
1534 | ||
1535 | object = mxt_get_object(data, MXT_TOUCH_MULTI_T9); | |
1536 | if (!object) | |
1537 | return -EINVAL; | |
1538 | ||
1539 | error = __mxt_read_reg(client, | |
1540 | object->start_address + MXT_T9_RANGE, | |
1541 | sizeof(range), &range); | |
1542 | if (error) | |
1543 | return error; | |
1544 | ||
1545 | le16_to_cpus(&range.x); | |
1546 | le16_to_cpus(&range.y); | |
1547 | ||
1548 | error = __mxt_read_reg(client, | |
1549 | object->start_address + MXT_T9_ORIENT, | |
1550 | 1, &orient); | |
1551 | if (error) | |
1552 | return error; | |
1553 | ||
1554 | /* Handle default values */ | |
1555 | if (range.x == 0) | |
1556 | range.x = 1023; | |
1557 | ||
1558 | if (range.y == 0) | |
1559 | range.y = 1023; | |
1560 | ||
f3889ed1 | 1561 | if (orient & MXT_T9_ORIENT_SWITCH) { |
61dc1aba ND |
1562 | data->max_x = range.y; |
1563 | data->max_y = range.x; | |
1564 | } else { | |
1565 | data->max_x = range.x; | |
1566 | data->max_y = range.y; | |
1567 | } | |
1568 | ||
1569 | dev_dbg(&client->dev, | |
1570 | "Touchscreen size X%uY%u\n", data->max_x, data->max_y); | |
1571 | ||
1572 | return 0; | |
1573 | } | |
1574 | ||
7a53d609 ND |
1575 | static int mxt_input_open(struct input_dev *dev); |
1576 | static void mxt_input_close(struct input_dev *dev); | |
1577 | ||
1578 | static int mxt_initialize_t9_input_device(struct mxt_data *data) | |
1579 | { | |
1580 | struct device *dev = &data->client->dev; | |
1581 | const struct mxt_platform_data *pdata = data->pdata; | |
1582 | struct input_dev *input_dev; | |
1583 | int error; | |
1584 | unsigned int num_mt_slots; | |
1585 | unsigned int mt_flags = 0; | |
1586 | int i; | |
1587 | ||
1588 | error = mxt_read_t9_resolution(data); | |
1589 | if (error) | |
1590 | dev_warn(dev, "Failed to initialize T9 resolution\n"); | |
1591 | ||
1592 | input_dev = input_allocate_device(); | |
1593 | if (!input_dev) { | |
1594 | dev_err(dev, "Failed to allocate memory\n"); | |
1595 | return -ENOMEM; | |
1596 | } | |
1597 | ||
1598 | input_dev->name = "Atmel maXTouch Touchscreen"; | |
1599 | input_dev->phys = data->phys; | |
1600 | input_dev->id.bustype = BUS_I2C; | |
1601 | input_dev->dev.parent = dev; | |
1602 | input_dev->open = mxt_input_open; | |
1603 | input_dev->close = mxt_input_close; | |
1604 | ||
1605 | __set_bit(EV_ABS, input_dev->evbit); | |
1606 | __set_bit(EV_KEY, input_dev->evbit); | |
1607 | __set_bit(BTN_TOUCH, input_dev->keybit); | |
1608 | ||
1609 | if (pdata->t19_num_keys) { | |
1610 | __set_bit(INPUT_PROP_BUTTONPAD, input_dev->propbit); | |
1611 | ||
1612 | for (i = 0; i < pdata->t19_num_keys; i++) | |
1613 | if (pdata->t19_keymap[i] != KEY_RESERVED) | |
1614 | input_set_capability(input_dev, EV_KEY, | |
1615 | pdata->t19_keymap[i]); | |
1616 | ||
1617 | mt_flags |= INPUT_MT_POINTER; | |
1618 | ||
1619 | input_abs_set_res(input_dev, ABS_X, MXT_PIXELS_PER_MM); | |
1620 | input_abs_set_res(input_dev, ABS_Y, MXT_PIXELS_PER_MM); | |
1621 | input_abs_set_res(input_dev, ABS_MT_POSITION_X, | |
1622 | MXT_PIXELS_PER_MM); | |
1623 | input_abs_set_res(input_dev, ABS_MT_POSITION_Y, | |
1624 | MXT_PIXELS_PER_MM); | |
1625 | ||
1626 | input_dev->name = "Atmel maXTouch Touchpad"; | |
1627 | } | |
1628 | ||
1629 | /* For single touch */ | |
1630 | input_set_abs_params(input_dev, ABS_X, | |
1631 | 0, data->max_x, 0, 0); | |
1632 | input_set_abs_params(input_dev, ABS_Y, | |
1633 | 0, data->max_y, 0, 0); | |
1634 | input_set_abs_params(input_dev, ABS_PRESSURE, | |
1635 | 0, 255, 0, 0); | |
1636 | ||
1637 | /* For multi touch */ | |
1638 | num_mt_slots = data->T9_reportid_max - data->T9_reportid_min + 1; | |
1639 | error = input_mt_init_slots(input_dev, num_mt_slots, mt_flags); | |
1640 | if (error) { | |
1641 | dev_err(dev, "Error %d initialising slots\n", error); | |
1642 | goto err_free_mem; | |
1643 | } | |
1644 | ||
1645 | input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR, | |
1646 | 0, MXT_MAX_AREA, 0, 0); | |
1647 | input_set_abs_params(input_dev, ABS_MT_POSITION_X, | |
1648 | 0, data->max_x, 0, 0); | |
1649 | input_set_abs_params(input_dev, ABS_MT_POSITION_Y, | |
1650 | 0, data->max_y, 0, 0); | |
1651 | input_set_abs_params(input_dev, ABS_MT_PRESSURE, | |
1652 | 0, 255, 0, 0); | |
1653 | ||
1654 | input_set_drvdata(input_dev, data); | |
1655 | ||
1656 | error = input_register_device(input_dev); | |
1657 | if (error) { | |
1658 | dev_err(dev, "Error %d registering input device\n", error); | |
1659 | goto err_free_mem; | |
1660 | } | |
1661 | ||
1662 | data->input_dev = input_dev; | |
1663 | ||
1664 | return 0; | |
1665 | ||
1666 | err_free_mem: | |
1667 | input_free_device(input_dev); | |
1668 | return error; | |
1669 | } | |
1670 | ||
50a77c65 ND |
1671 | static int mxt_configure_objects(struct mxt_data *data, |
1672 | const struct firmware *cfg); | |
1673 | ||
1674 | static void mxt_config_cb(const struct firmware *cfg, void *ctx) | |
1675 | { | |
1676 | mxt_configure_objects(ctx, cfg); | |
efdbd7ae | 1677 | release_firmware(cfg); |
50a77c65 ND |
1678 | } |
1679 | ||
7686b108 | 1680 | static int mxt_initialize(struct mxt_data *data) |
4cf51c38 JS |
1681 | { |
1682 | struct i2c_client *client = data->client; | |
6cd1ab0f | 1683 | int recovery_attempts = 0; |
4cf51c38 | 1684 | int error; |
4cf51c38 | 1685 | |
6cd1ab0f DT |
1686 | while (1) { |
1687 | error = mxt_get_info(data); | |
1688 | if (!error) | |
1689 | break; | |
1690 | ||
1691 | /* Check bootloader state */ | |
1692 | error = mxt_probe_bootloader(data, false); | |
8efaa5e5 | 1693 | if (error) { |
6cd1ab0f DT |
1694 | dev_info(&client->dev, "Trying alternate bootloader address\n"); |
1695 | error = mxt_probe_bootloader(data, true); | |
1696 | if (error) { | |
8efaa5e5 ND |
1697 | /* Chip is not in appmode or bootloader mode */ |
1698 | return error; | |
1699 | } | |
6cd1ab0f | 1700 | } |
a9fdd1e6 | 1701 | |
6cd1ab0f DT |
1702 | /* OK, we are in bootloader, see if we can recover */ |
1703 | if (++recovery_attempts > 1) { | |
1704 | dev_err(&client->dev, "Could not recover from bootloader mode\n"); | |
1705 | /* | |
1706 | * We can reflash from this state, so do not | |
1707 | * abort initialization. | |
1708 | */ | |
1709 | data->in_bootloader = true; | |
1710 | return 0; | |
8efaa5e5 | 1711 | } |
6cd1ab0f DT |
1712 | |
1713 | /* Attempt to exit bootloader into app mode */ | |
1714 | mxt_send_bootloader_cmd(data, false); | |
1715 | msleep(MXT_FW_RESET_TIME); | |
a9fdd1e6 | 1716 | } |
4cf51c38 | 1717 | |
4cf51c38 | 1718 | /* Get object table information */ |
7686b108 | 1719 | error = mxt_get_object_table(data); |
7bed6805 ND |
1720 | if (error) { |
1721 | dev_err(&client->dev, "Error %d reading object table\n", error); | |
dd24dcf5 | 1722 | return error; |
7bed6805 | 1723 | } |
4cf51c38 | 1724 | |
041fa159 | 1725 | error = mxt_acquire_irq(data); |
dd24dcf5 ND |
1726 | if (error) |
1727 | goto err_free_object_table; | |
1728 | ||
6cd1ab0f DT |
1729 | error = request_firmware_nowait(THIS_MODULE, true, MXT_CFG_NAME, |
1730 | &client->dev, GFP_KERNEL, data, | |
1731 | mxt_config_cb); | |
1732 | if (error) { | |
1733 | dev_err(&client->dev, "Failed to invoke firmware loader: %d\n", | |
1734 | error); | |
1735 | goto err_free_object_table; | |
1736 | } | |
50a77c65 ND |
1737 | |
1738 | return 0; | |
1739 | ||
1740 | err_free_object_table: | |
1741 | mxt_free_object_table(data); | |
1742 | return error; | |
1743 | } | |
1744 | ||
9d469d03 ND |
1745 | static int mxt_set_t7_power_cfg(struct mxt_data *data, u8 sleep) |
1746 | { | |
1747 | struct device *dev = &data->client->dev; | |
1748 | int error; | |
1749 | struct t7_config *new_config; | |
1750 | struct t7_config deepsleep = { .active = 0, .idle = 0 }; | |
1751 | ||
1752 | if (sleep == MXT_POWER_CFG_DEEPSLEEP) | |
1753 | new_config = &deepsleep; | |
1754 | else | |
1755 | new_config = &data->t7_cfg; | |
1756 | ||
1757 | error = __mxt_write_reg(data->client, data->T7_address, | |
1758 | sizeof(data->t7_cfg), new_config); | |
1759 | if (error) | |
1760 | return error; | |
1761 | ||
1762 | dev_dbg(dev, "Set T7 ACTV:%d IDLE:%d\n", | |
1763 | new_config->active, new_config->idle); | |
1764 | ||
1765 | return 0; | |
1766 | } | |
1767 | ||
1768 | static int mxt_init_t7_power_cfg(struct mxt_data *data) | |
1769 | { | |
1770 | struct device *dev = &data->client->dev; | |
1771 | int error; | |
1772 | bool retry = false; | |
1773 | ||
1774 | recheck: | |
1775 | error = __mxt_read_reg(data->client, data->T7_address, | |
1776 | sizeof(data->t7_cfg), &data->t7_cfg); | |
1777 | if (error) | |
1778 | return error; | |
1779 | ||
1780 | if (data->t7_cfg.active == 0 || data->t7_cfg.idle == 0) { | |
1781 | if (!retry) { | |
1782 | dev_dbg(dev, "T7 cfg zero, resetting\n"); | |
1783 | mxt_soft_reset(data); | |
1784 | retry = true; | |
1785 | goto recheck; | |
1786 | } else { | |
1787 | dev_dbg(dev, "T7 cfg zero after reset, overriding\n"); | |
1788 | data->t7_cfg.active = 20; | |
1789 | data->t7_cfg.idle = 100; | |
1790 | return mxt_set_t7_power_cfg(data, MXT_POWER_CFG_RUN); | |
1791 | } | |
1792 | } | |
1793 | ||
1794 | dev_dbg(dev, "Initialized power cfg: ACTV %d, IDLE %d\n", | |
1795 | data->t7_cfg.active, data->t7_cfg.idle); | |
1796 | return 0; | |
1797 | } | |
1798 | ||
50a77c65 ND |
1799 | static int mxt_configure_objects(struct mxt_data *data, |
1800 | const struct firmware *cfg) | |
1801 | { | |
1802 | struct device *dev = &data->client->dev; | |
1803 | struct mxt_info *info = &data->info; | |
1804 | int error; | |
1805 | ||
1806 | if (cfg) { | |
1807 | error = mxt_update_cfg(data, cfg); | |
1808 | if (error) | |
1809 | dev_warn(dev, "Error %d updating config\n", error); | |
7bed6805 | 1810 | } |
4cf51c38 | 1811 | |
9d469d03 ND |
1812 | error = mxt_init_t7_power_cfg(data); |
1813 | if (error) { | |
1814 | dev_err(dev, "Failed to initialize power cfg\n"); | |
1815 | return error; | |
1816 | } | |
1817 | ||
7a53d609 ND |
1818 | error = mxt_initialize_t9_input_device(data); |
1819 | if (error) | |
50a77c65 | 1820 | return error; |
4cf51c38 | 1821 | |
50a77c65 | 1822 | dev_info(dev, |
61dc1aba ND |
1823 | "Family: %u Variant: %u Firmware V%u.%u.%02X Objects: %u\n", |
1824 | info->family_id, info->variant_id, info->version >> 4, | |
1825 | info->version & 0xf, info->build, info->object_num); | |
4cf51c38 JS |
1826 | |
1827 | return 0; | |
1828 | } | |
1829 | ||
b19fc9ec DK |
1830 | /* Firmware Version is returned as Major.Minor.Build */ |
1831 | static ssize_t mxt_fw_version_show(struct device *dev, | |
1832 | struct device_attribute *attr, char *buf) | |
1833 | { | |
1834 | struct mxt_data *data = dev_get_drvdata(dev); | |
1835 | struct mxt_info *info = &data->info; | |
1836 | return scnprintf(buf, PAGE_SIZE, "%u.%u.%02X\n", | |
1837 | info->version >> 4, info->version & 0xf, info->build); | |
1838 | } | |
1839 | ||
1840 | /* Hardware Version is returned as FamilyID.VariantID */ | |
1841 | static ssize_t mxt_hw_version_show(struct device *dev, | |
1842 | struct device_attribute *attr, char *buf) | |
1843 | { | |
1844 | struct mxt_data *data = dev_get_drvdata(dev); | |
1845 | struct mxt_info *info = &data->info; | |
1846 | return scnprintf(buf, PAGE_SIZE, "%u.%u\n", | |
1847 | info->family_id, info->variant_id); | |
1848 | } | |
1849 | ||
794eb67e DK |
1850 | static ssize_t mxt_show_instance(char *buf, int count, |
1851 | struct mxt_object *object, int instance, | |
1852 | const u8 *val) | |
1853 | { | |
1854 | int i; | |
1855 | ||
1e0c0c5b | 1856 | if (mxt_obj_instances(object) > 1) |
794eb67e DK |
1857 | count += scnprintf(buf + count, PAGE_SIZE - count, |
1858 | "Instance %u\n", instance); | |
1859 | ||
1e0c0c5b | 1860 | for (i = 0; i < mxt_obj_size(object); i++) |
794eb67e DK |
1861 | count += scnprintf(buf + count, PAGE_SIZE - count, |
1862 | "\t[%2u]: %02x (%d)\n", i, val[i], val[i]); | |
1863 | count += scnprintf(buf + count, PAGE_SIZE - count, "\n"); | |
1864 | ||
1865 | return count; | |
1866 | } | |
1867 | ||
7686b108 | 1868 | static ssize_t mxt_object_show(struct device *dev, |
4cf51c38 JS |
1869 | struct device_attribute *attr, char *buf) |
1870 | { | |
7686b108 IV |
1871 | struct mxt_data *data = dev_get_drvdata(dev); |
1872 | struct mxt_object *object; | |
4cf51c38 JS |
1873 | int count = 0; |
1874 | int i, j; | |
1875 | int error; | |
43a91d51 | 1876 | u8 *obuf; |
4cf51c38 | 1877 | |
43a91d51 DK |
1878 | /* Pre-allocate buffer large enough to hold max sized object. */ |
1879 | obuf = kmalloc(256, GFP_KERNEL); | |
1880 | if (!obuf) | |
1881 | return -ENOMEM; | |
4cf51c38 | 1882 | |
43a91d51 | 1883 | error = 0; |
4cf51c38 JS |
1884 | for (i = 0; i < data->info.object_num; i++) { |
1885 | object = data->object_table + i; | |
1886 | ||
91630955 | 1887 | if (!mxt_object_readable(object->type)) |
4cf51c38 | 1888 | continue; |
4cf51c38 | 1889 | |
91630955 DK |
1890 | count += scnprintf(buf + count, PAGE_SIZE - count, |
1891 | "T%u:\n", object->type); | |
4cf51c38 | 1892 | |
1e0c0c5b DK |
1893 | for (j = 0; j < mxt_obj_instances(object); j++) { |
1894 | u16 size = mxt_obj_size(object); | |
794eb67e | 1895 | u16 addr = object->start_address + j * size; |
43a91d51 | 1896 | |
794eb67e | 1897 | error = __mxt_read_reg(data->client, addr, size, obuf); |
4cf51c38 | 1898 | if (error) |
794eb67e | 1899 | goto done; |
4cf51c38 | 1900 | |
794eb67e | 1901 | count = mxt_show_instance(buf, count, object, j, obuf); |
4cf51c38 | 1902 | } |
4cf51c38 JS |
1903 | } |
1904 | ||
794eb67e | 1905 | done: |
43a91d51 DK |
1906 | kfree(obuf); |
1907 | return error ?: count; | |
4cf51c38 JS |
1908 | } |
1909 | ||
f2ac6cb9 ND |
1910 | static int mxt_check_firmware_format(struct device *dev, |
1911 | const struct firmware *fw) | |
1912 | { | |
1913 | unsigned int pos = 0; | |
1914 | char c; | |
1915 | ||
1916 | while (pos < fw->size) { | |
1917 | c = *(fw->data + pos); | |
1918 | ||
1919 | if (c < '0' || (c > '9' && c < 'A') || c > 'F') | |
1920 | return 0; | |
1921 | ||
1922 | pos++; | |
1923 | } | |
1924 | ||
1925 | /* | |
1926 | * To convert file try: | |
1927 | * xxd -r -p mXTXXX__APP_VX-X-XX.enc > maxtouch.fw | |
1928 | */ | |
1929 | dev_err(dev, "Aborting: firmware file must be in binary format\n"); | |
1930 | ||
1931 | return -EINVAL; | |
1932 | } | |
1933 | ||
7686b108 | 1934 | static int mxt_load_fw(struct device *dev, const char *fn) |
4cf51c38 | 1935 | { |
7686b108 | 1936 | struct mxt_data *data = dev_get_drvdata(dev); |
4cf51c38 JS |
1937 | const struct firmware *fw = NULL; |
1938 | unsigned int frame_size; | |
1939 | unsigned int pos = 0; | |
f943c74a | 1940 | unsigned int retry = 0; |
f477c758 | 1941 | unsigned int frame = 0; |
4cf51c38 JS |
1942 | int ret; |
1943 | ||
1944 | ret = request_firmware(&fw, fn, dev); | |
1945 | if (ret) { | |
1946 | dev_err(dev, "Unable to open firmware %s\n", fn); | |
1947 | return ret; | |
1948 | } | |
1949 | ||
f2ac6cb9 ND |
1950 | /* Check for incorrect enc file */ |
1951 | ret = mxt_check_firmware_format(dev, fw); | |
1952 | if (ret) | |
1953 | goto release_firmware; | |
1954 | ||
a9fdd1e6 ND |
1955 | if (!data->in_bootloader) { |
1956 | /* Change to the bootloader mode */ | |
1957 | data->in_bootloader = true; | |
d79e7e47 | 1958 | |
a9fdd1e6 ND |
1959 | ret = mxt_t6_command(data, MXT_COMMAND_RESET, |
1960 | MXT_BOOT_VALUE, false); | |
1961 | if (ret) | |
1962 | goto release_firmware; | |
a4a2ef46 | 1963 | |
a9fdd1e6 | 1964 | msleep(MXT_RESET_TIME); |
8efaa5e5 ND |
1965 | |
1966 | /* Do not need to scan since we know family ID */ | |
1967 | ret = mxt_lookup_bootloader_address(data, 0); | |
1968 | if (ret) | |
1969 | goto release_firmware; | |
58e4aeee SW |
1970 | |
1971 | mxt_free_input_device(data); | |
1972 | mxt_free_object_table(data); | |
8efaa5e5 ND |
1973 | } else { |
1974 | enable_irq(data->irq); | |
a9fdd1e6 | 1975 | } |
4cf51c38 | 1976 | |
d79e7e47 BL |
1977 | reinit_completion(&data->bl_completion); |
1978 | ||
385deb96 ND |
1979 | ret = mxt_check_bootloader(data, MXT_WAITING_BOOTLOAD_CMD, false); |
1980 | if (ret) { | |
1981 | /* Bootloader may still be unlocked from previous attempt */ | |
1982 | ret = mxt_check_bootloader(data, MXT_WAITING_FRAME_DATA, false); | |
1983 | if (ret) | |
1984 | goto disable_irq; | |
1985 | } else { | |
1986 | dev_info(dev, "Unlocking bootloader\n"); | |
4cf51c38 | 1987 | |
385deb96 | 1988 | /* Unlock bootloader */ |
8efaa5e5 | 1989 | ret = mxt_send_bootloader_cmd(data, true); |
385deb96 ND |
1990 | if (ret) |
1991 | goto disable_irq; | |
1992 | } | |
4cf51c38 JS |
1993 | |
1994 | while (pos < fw->size) { | |
385deb96 | 1995 | ret = mxt_check_bootloader(data, MXT_WAITING_FRAME_DATA, true); |
4cf51c38 | 1996 | if (ret) |
d79e7e47 | 1997 | goto disable_irq; |
4cf51c38 JS |
1998 | |
1999 | frame_size = ((*(fw->data + pos) << 8) | *(fw->data + pos + 1)); | |
2000 | ||
f943c74a | 2001 | /* Take account of CRC bytes */ |
4cf51c38 JS |
2002 | frame_size += 2; |
2003 | ||
2004 | /* Write one frame to device */ | |
f28a842d ND |
2005 | ret = mxt_bootloader_write(data, fw->data + pos, frame_size); |
2006 | if (ret) | |
2007 | goto disable_irq; | |
4cf51c38 | 2008 | |
385deb96 | 2009 | ret = mxt_check_bootloader(data, MXT_FRAME_CRC_PASS, true); |
f943c74a ND |
2010 | if (ret) { |
2011 | retry++; | |
2012 | ||
2013 | /* Back off by 20ms per retry */ | |
2014 | msleep(retry * 20); | |
4cf51c38 | 2015 | |
f943c74a ND |
2016 | if (retry > 20) { |
2017 | dev_err(dev, "Retry count exceeded\n"); | |
2018 | goto disable_irq; | |
2019 | } | |
2020 | } else { | |
2021 | retry = 0; | |
2022 | pos += frame_size; | |
f477c758 | 2023 | frame++; |
f943c74a | 2024 | } |
4cf51c38 | 2025 | |
f477c758 ND |
2026 | if (frame % 50 == 0) |
2027 | dev_dbg(dev, "Sent %d frames, %d/%zd bytes\n", | |
2028 | frame, pos, fw->size); | |
4cf51c38 JS |
2029 | } |
2030 | ||
a0434b75 | 2031 | /* Wait for flash. */ |
a4a2ef46 IV |
2032 | ret = mxt_wait_for_completion(data, &data->bl_completion, |
2033 | MXT_FW_RESET_TIME); | |
a0434b75 BL |
2034 | if (ret) |
2035 | goto disable_irq; | |
2036 | ||
f477c758 ND |
2037 | dev_dbg(dev, "Sent %d frames, %d bytes\n", frame, pos); |
2038 | ||
a0434b75 BL |
2039 | /* |
2040 | * Wait for device to reset. Some bootloader versions do not assert | |
2041 | * the CHG line after bootloading has finished, so ignore potential | |
2042 | * errors. | |
2043 | */ | |
a4a2ef46 | 2044 | mxt_wait_for_completion(data, &data->bl_completion, MXT_FW_RESET_TIME); |
a0434b75 | 2045 | |
d79e7e47 BL |
2046 | data->in_bootloader = false; |
2047 | ||
2048 | disable_irq: | |
2049 | disable_irq(data->irq); | |
a4a2ef46 | 2050 | release_firmware: |
4cf51c38 | 2051 | release_firmware(fw); |
4cf51c38 JS |
2052 | return ret; |
2053 | } | |
2054 | ||
7686b108 | 2055 | static ssize_t mxt_update_fw_store(struct device *dev, |
4cf51c38 JS |
2056 | struct device_attribute *attr, |
2057 | const char *buf, size_t count) | |
2058 | { | |
7686b108 | 2059 | struct mxt_data *data = dev_get_drvdata(dev); |
4cf51c38 JS |
2060 | int error; |
2061 | ||
7686b108 | 2062 | error = mxt_load_fw(dev, MXT_FW_NAME); |
4cf51c38 JS |
2063 | if (error) { |
2064 | dev_err(dev, "The firmware update failed(%d)\n", error); | |
2065 | count = error; | |
2066 | } else { | |
7bed6805 ND |
2067 | dev_info(dev, "The firmware update succeeded\n"); |
2068 | ||
dd24dcf5 | 2069 | error = mxt_initialize(data); |
d79e7e47 BL |
2070 | if (error) |
2071 | return error; | |
2072 | } | |
08960a07 | 2073 | |
4cf51c38 JS |
2074 | return count; |
2075 | } | |
2076 | ||
b19fc9ec DK |
2077 | static DEVICE_ATTR(fw_version, S_IRUGO, mxt_fw_version_show, NULL); |
2078 | static DEVICE_ATTR(hw_version, S_IRUGO, mxt_hw_version_show, NULL); | |
71b3e938 DK |
2079 | static DEVICE_ATTR(object, S_IRUGO, mxt_object_show, NULL); |
2080 | static DEVICE_ATTR(update_fw, S_IWUSR, NULL, mxt_update_fw_store); | |
4cf51c38 | 2081 | |
7686b108 | 2082 | static struct attribute *mxt_attrs[] = { |
b19fc9ec DK |
2083 | &dev_attr_fw_version.attr, |
2084 | &dev_attr_hw_version.attr, | |
4cf51c38 JS |
2085 | &dev_attr_object.attr, |
2086 | &dev_attr_update_fw.attr, | |
2087 | NULL | |
2088 | }; | |
2089 | ||
7686b108 IV |
2090 | static const struct attribute_group mxt_attr_group = { |
2091 | .attrs = mxt_attrs, | |
4cf51c38 JS |
2092 | }; |
2093 | ||
7686b108 | 2094 | static void mxt_start(struct mxt_data *data) |
4cf51c38 | 2095 | { |
9d469d03 ND |
2096 | mxt_set_t7_power_cfg(data, MXT_POWER_CFG_RUN); |
2097 | ||
2098 | /* Recalibrate since chip has been in deep sleep */ | |
2099 | mxt_t6_command(data, MXT_COMMAND_CALIBRATE, 1, false); | |
4cf51c38 JS |
2100 | } |
2101 | ||
7686b108 | 2102 | static void mxt_stop(struct mxt_data *data) |
4cf51c38 | 2103 | { |
9d469d03 | 2104 | mxt_set_t7_power_cfg(data, MXT_POWER_CFG_DEEPSLEEP); |
4cf51c38 JS |
2105 | } |
2106 | ||
7686b108 | 2107 | static int mxt_input_open(struct input_dev *dev) |
4cf51c38 | 2108 | { |
7686b108 | 2109 | struct mxt_data *data = input_get_drvdata(dev); |
4cf51c38 | 2110 | |
7686b108 | 2111 | mxt_start(data); |
4cf51c38 JS |
2112 | |
2113 | return 0; | |
2114 | } | |
2115 | ||
7686b108 | 2116 | static void mxt_input_close(struct input_dev *dev) |
4cf51c38 | 2117 | { |
7686b108 | 2118 | struct mxt_data *data = input_get_drvdata(dev); |
4cf51c38 | 2119 | |
7686b108 | 2120 | mxt_stop(data); |
4cf51c38 JS |
2121 | } |
2122 | ||
78188be3 SW |
2123 | #ifdef CONFIG_OF |
2124 | static struct mxt_platform_data *mxt_parse_dt(struct i2c_client *client) | |
2125 | { | |
2126 | struct mxt_platform_data *pdata; | |
2127 | u32 *keymap; | |
2128 | u32 keycode; | |
2129 | int proplen, i, ret; | |
2130 | ||
2131 | if (!client->dev.of_node) | |
2132 | return ERR_PTR(-ENODEV); | |
2133 | ||
2134 | pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL); | |
2135 | if (!pdata) | |
2136 | return ERR_PTR(-ENOMEM); | |
2137 | ||
2138 | if (of_find_property(client->dev.of_node, "linux,gpio-keymap", | |
2139 | &proplen)) { | |
2140 | pdata->t19_num_keys = proplen / sizeof(u32); | |
2141 | ||
2142 | keymap = devm_kzalloc(&client->dev, | |
2143 | pdata->t19_num_keys * sizeof(keymap[0]), | |
2144 | GFP_KERNEL); | |
2145 | if (!keymap) | |
2146 | return ERR_PTR(-ENOMEM); | |
2147 | ||
2148 | for (i = 0; i < pdata->t19_num_keys; i++) { | |
2149 | ret = of_property_read_u32_index(client->dev.of_node, | |
2150 | "linux,gpio-keymap", i, &keycode); | |
2151 | if (ret) | |
2152 | keycode = KEY_RESERVED; | |
2153 | ||
2154 | keymap[i] = keycode; | |
2155 | } | |
2156 | ||
2157 | pdata->t19_keymap = keymap; | |
2158 | } | |
2159 | ||
2160 | return pdata; | |
2161 | } | |
2162 | #else | |
2163 | static struct mxt_platform_data *mxt_parse_dt(struct i2c_client *client) | |
2164 | { | |
2165 | dev_dbg(&client->dev, "No platform data specified\n"); | |
2166 | return ERR_PTR(-EINVAL); | |
2167 | } | |
2168 | #endif | |
2169 | ||
2170 | static int mxt_probe(struct i2c_client *client, const struct i2c_device_id *id) | |
4cf51c38 | 2171 | { |
7686b108 | 2172 | struct mxt_data *data; |
78188be3 | 2173 | const struct mxt_platform_data *pdata; |
4cf51c38 JS |
2174 | int error; |
2175 | ||
78188be3 SW |
2176 | pdata = dev_get_platdata(&client->dev); |
2177 | if (!pdata) { | |
2178 | pdata = mxt_parse_dt(client); | |
2179 | if (IS_ERR(pdata)) | |
2180 | return PTR_ERR(pdata); | |
2181 | } | |
4cf51c38 | 2182 | |
7686b108 | 2183 | data = kzalloc(sizeof(struct mxt_data), GFP_KERNEL); |
7a53d609 | 2184 | if (!data) { |
4cf51c38 | 2185 | dev_err(&client->dev, "Failed to allocate memory\n"); |
7a53d609 | 2186 | return -ENOMEM; |
4cf51c38 JS |
2187 | } |
2188 | ||
ec02ac2b DK |
2189 | snprintf(data->phys, sizeof(data->phys), "i2c-%u-%04x/input0", |
2190 | client->adapter->nr, client->addr); | |
22dfab7f | 2191 | |
910d8051 | 2192 | data->client = client; |
910d8051 JS |
2193 | data->pdata = pdata; |
2194 | data->irq = client->irq; | |
7a53d609 | 2195 | i2c_set_clientdata(client, data); |
910d8051 | 2196 | |
d79e7e47 | 2197 | init_completion(&data->bl_completion); |
a4a2ef46 | 2198 | init_completion(&data->reset_completion); |
c3f78043 | 2199 | init_completion(&data->crc_completion); |
d79e7e47 | 2200 | |
dd24dcf5 ND |
2201 | error = request_threaded_irq(client->irq, NULL, mxt_interrupt, |
2202 | pdata->irqflags | IRQF_ONESHOT, | |
2203 | client->name, data); | |
2204 | if (error) { | |
2205 | dev_err(&client->dev, "Failed to register interrupt\n"); | |
2206 | goto err_free_mem; | |
2207 | } | |
2208 | ||
2209 | disable_irq(client->irq); | |
2210 | ||
cb159115 DK |
2211 | error = mxt_initialize(data); |
2212 | if (error) | |
7a53d609 | 2213 | goto err_free_irq; |
4cf51c38 | 2214 | |
7686b108 | 2215 | error = sysfs_create_group(&client->dev.kobj, &mxt_attr_group); |
7bed6805 ND |
2216 | if (error) { |
2217 | dev_err(&client->dev, "Failure %d creating sysfs group\n", | |
2218 | error); | |
7a53d609 | 2219 | goto err_free_object; |
7bed6805 | 2220 | } |
4cf51c38 JS |
2221 | |
2222 | return 0; | |
2223 | ||
4cf51c38 | 2224 | err_free_object: |
58e4aeee | 2225 | mxt_free_input_device(data); |
5f3f9bc2 | 2226 | mxt_free_object_table(data); |
dd24dcf5 ND |
2227 | err_free_irq: |
2228 | free_irq(client->irq, data); | |
4cf51c38 | 2229 | err_free_mem: |
4cf51c38 JS |
2230 | kfree(data); |
2231 | return error; | |
2232 | } | |
2233 | ||
e2619cf7 | 2234 | static int mxt_remove(struct i2c_client *client) |
4cf51c38 | 2235 | { |
7686b108 | 2236 | struct mxt_data *data = i2c_get_clientdata(client); |
4cf51c38 | 2237 | |
7686b108 | 2238 | sysfs_remove_group(&client->dev.kobj, &mxt_attr_group); |
4cf51c38 | 2239 | free_irq(data->irq, data); |
58e4aeee | 2240 | mxt_free_input_device(data); |
5f3f9bc2 | 2241 | mxt_free_object_table(data); |
4cf51c38 JS |
2242 | kfree(data); |
2243 | ||
2244 | return 0; | |
2245 | } | |
2246 | ||
3a73c816 | 2247 | #ifdef CONFIG_PM_SLEEP |
7686b108 | 2248 | static int mxt_suspend(struct device *dev) |
4cf51c38 | 2249 | { |
8b5fce06 | 2250 | struct i2c_client *client = to_i2c_client(dev); |
7686b108 | 2251 | struct mxt_data *data = i2c_get_clientdata(client); |
4cf51c38 JS |
2252 | struct input_dev *input_dev = data->input_dev; |
2253 | ||
2254 | mutex_lock(&input_dev->mutex); | |
2255 | ||
2256 | if (input_dev->users) | |
7686b108 | 2257 | mxt_stop(data); |
4cf51c38 JS |
2258 | |
2259 | mutex_unlock(&input_dev->mutex); | |
2260 | ||
2261 | return 0; | |
2262 | } | |
2263 | ||
7686b108 | 2264 | static int mxt_resume(struct device *dev) |
4cf51c38 | 2265 | { |
8b5fce06 | 2266 | struct i2c_client *client = to_i2c_client(dev); |
7686b108 | 2267 | struct mxt_data *data = i2c_get_clientdata(client); |
4cf51c38 JS |
2268 | struct input_dev *input_dev = data->input_dev; |
2269 | ||
4cf51c38 JS |
2270 | mutex_lock(&input_dev->mutex); |
2271 | ||
2272 | if (input_dev->users) | |
7686b108 | 2273 | mxt_start(data); |
4cf51c38 JS |
2274 | |
2275 | mutex_unlock(&input_dev->mutex); | |
2276 | ||
2277 | return 0; | |
2278 | } | |
4cf51c38 JS |
2279 | #endif |
2280 | ||
3a73c816 DK |
2281 | static SIMPLE_DEV_PM_OPS(mxt_pm_ops, mxt_suspend, mxt_resume); |
2282 | ||
78188be3 SW |
2283 | static const struct of_device_id mxt_of_match[] = { |
2284 | { .compatible = "atmel,maxtouch", }, | |
2285 | {}, | |
2286 | }; | |
2287 | MODULE_DEVICE_TABLE(of, mxt_of_match); | |
2288 | ||
7686b108 | 2289 | static const struct i2c_device_id mxt_id[] = { |
4cf51c38 | 2290 | { "qt602240_ts", 0 }, |
7686b108 | 2291 | { "atmel_mxt_ts", 0 }, |
22dfab7f | 2292 | { "atmel_mxt_tp", 0 }, |
46ee2a05 | 2293 | { "mXT224", 0 }, |
4cf51c38 JS |
2294 | { } |
2295 | }; | |
7686b108 | 2296 | MODULE_DEVICE_TABLE(i2c, mxt_id); |
4cf51c38 | 2297 | |
7686b108 | 2298 | static struct i2c_driver mxt_driver = { |
4cf51c38 | 2299 | .driver = { |
7686b108 | 2300 | .name = "atmel_mxt_ts", |
4cf51c38 | 2301 | .owner = THIS_MODULE, |
78188be3 | 2302 | .of_match_table = of_match_ptr(mxt_of_match), |
7686b108 | 2303 | .pm = &mxt_pm_ops, |
4cf51c38 | 2304 | }, |
7686b108 | 2305 | .probe = mxt_probe, |
1cb0aa88 | 2306 | .remove = mxt_remove, |
7686b108 | 2307 | .id_table = mxt_id, |
4cf51c38 JS |
2308 | }; |
2309 | ||
1b92c1cf | 2310 | module_i2c_driver(mxt_driver); |
4cf51c38 JS |
2311 | |
2312 | /* Module information */ | |
2313 | MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>"); | |
7686b108 | 2314 | MODULE_DESCRIPTION("Atmel maXTouch Touchscreen driver"); |
4cf51c38 | 2315 | MODULE_LICENSE("GPL"); |