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 | ||
4f8d8088 DT |
17 | #include <linux/acpi.h> |
18 | #include <linux/dmi.h> | |
4cf51c38 | 19 | #include <linux/module.h> |
d79e7e47 BL |
20 | #include <linux/init.h> |
21 | #include <linux/completion.h> | |
4cf51c38 JS |
22 | #include <linux/delay.h> |
23 | #include <linux/firmware.h> | |
24 | #include <linux/i2c.h> | |
7f3884f7 | 25 | #include <linux/platform_data/atmel_mxt_ts.h> |
8b86c1c2 | 26 | #include <linux/input/mt.h> |
4cf51c38 | 27 | #include <linux/interrupt.h> |
78188be3 | 28 | #include <linux/of.h> |
4cf51c38 | 29 | #include <linux/slab.h> |
b23157dc | 30 | #include <asm/unaligned.h> |
4cf51c38 | 31 | |
50a77c65 | 32 | /* Firmware files */ |
7686b108 | 33 | #define MXT_FW_NAME "maxtouch.fw" |
50a77c65 ND |
34 | #define MXT_CFG_NAME "maxtouch.cfg" |
35 | #define MXT_CFG_MAGIC "OBP_RAW V1" | |
4cf51c38 JS |
36 | |
37 | /* Registers */ | |
7686b108 | 38 | #define MXT_OBJECT_START 0x07 |
7686b108 | 39 | #define MXT_OBJECT_SIZE 6 |
4ce6fa01 ND |
40 | #define MXT_INFO_CHECKSUM_SIZE 3 |
41 | #define MXT_MAX_BLOCK_WRITE 256 | |
4cf51c38 JS |
42 | |
43 | /* Object types */ | |
81c88a71 IV |
44 | #define MXT_DEBUG_DIAGNOSTIC_T37 37 |
45 | #define MXT_GEN_MESSAGE_T5 5 | |
46 | #define MXT_GEN_COMMAND_T6 6 | |
47 | #define MXT_GEN_POWER_T7 7 | |
48 | #define MXT_GEN_ACQUIRE_T8 8 | |
49 | #define MXT_GEN_DATASOURCE_T53 53 | |
50 | #define MXT_TOUCH_MULTI_T9 9 | |
51 | #define MXT_TOUCH_KEYARRAY_T15 15 | |
52 | #define MXT_TOUCH_PROXIMITY_T23 23 | |
53 | #define MXT_TOUCH_PROXKEY_T52 52 | |
54 | #define MXT_PROCI_GRIPFACE_T20 20 | |
55 | #define MXT_PROCG_NOISE_T22 22 | |
56 | #define MXT_PROCI_ONETOUCH_T24 24 | |
57 | #define MXT_PROCI_TWOTOUCH_T27 27 | |
58 | #define MXT_PROCI_GRIP_T40 40 | |
59 | #define MXT_PROCI_PALM_T41 41 | |
60 | #define MXT_PROCI_TOUCHSUPPRESSION_T42 42 | |
61 | #define MXT_PROCI_STYLUS_T47 47 | |
62 | #define MXT_PROCG_NOISESUPPRESSION_T48 48 | |
63 | #define MXT_SPT_COMMSCONFIG_T18 18 | |
64 | #define MXT_SPT_GPIOPWM_T19 19 | |
65 | #define MXT_SPT_SELFTEST_T25 25 | |
66 | #define MXT_SPT_CTECONFIG_T28 28 | |
67 | #define MXT_SPT_USERDATA_T38 38 | |
68 | #define MXT_SPT_DIGITIZER_T43 43 | |
69 | #define MXT_SPT_MESSAGECOUNT_T44 44 | |
70 | #define MXT_SPT_CTECONFIG_T46 46 | |
b23157dc | 71 | #define MXT_TOUCH_MULTITOUCHSCREEN_T100 100 |
81c88a71 | 72 | |
5f3f9bc2 ND |
73 | /* MXT_GEN_MESSAGE_T5 object */ |
74 | #define MXT_RPTID_NOMSG 0xff | |
75 | ||
81c88a71 | 76 | /* MXT_GEN_COMMAND_T6 field */ |
7686b108 IV |
77 | #define MXT_COMMAND_RESET 0 |
78 | #define MXT_COMMAND_BACKUPNV 1 | |
79 | #define MXT_COMMAND_CALIBRATE 2 | |
80 | #define MXT_COMMAND_REPORTALL 3 | |
81 | #define MXT_COMMAND_DIAGNOSTIC 5 | |
82 | ||
a4a2ef46 IV |
83 | /* Define for T6 status byte */ |
84 | #define MXT_T6_STATUS_RESET (1 << 7) | |
497767d1 ND |
85 | #define MXT_T6_STATUS_OFL (1 << 6) |
86 | #define MXT_T6_STATUS_SIGERR (1 << 5) | |
87 | #define MXT_T6_STATUS_CAL (1 << 4) | |
88 | #define MXT_T6_STATUS_CFGERR (1 << 3) | |
89 | #define MXT_T6_STATUS_COMSERR (1 << 2) | |
a4a2ef46 | 90 | |
81c88a71 | 91 | /* MXT_GEN_POWER_T7 field */ |
7f3884f7 ND |
92 | struct t7_config { |
93 | u8 idle; | |
94 | u8 active; | |
95 | } __packed; | |
96 | ||
97 | #define MXT_POWER_CFG_RUN 0 | |
98 | #define MXT_POWER_CFG_DEEPSLEEP 1 | |
7686b108 | 99 | |
81c88a71 | 100 | /* MXT_TOUCH_MULTI_T9 field */ |
7f3884f7 | 101 | #define MXT_T9_CTRL 0 |
61dc1aba ND |
102 | #define MXT_T9_ORIENT 9 |
103 | #define MXT_T9_RANGE 18 | |
104 | ||
f3889ed1 ND |
105 | /* MXT_TOUCH_MULTI_T9 status */ |
106 | #define MXT_T9_UNGRIP (1 << 0) | |
107 | #define MXT_T9_SUPPRESS (1 << 1) | |
108 | #define MXT_T9_AMP (1 << 2) | |
109 | #define MXT_T9_VECTOR (1 << 3) | |
110 | #define MXT_T9_MOVE (1 << 4) | |
111 | #define MXT_T9_RELEASE (1 << 5) | |
112 | #define MXT_T9_PRESS (1 << 6) | |
113 | #define MXT_T9_DETECT (1 << 7) | |
114 | ||
61dc1aba | 115 | struct t9_range { |
1c0276d5 ND |
116 | __le16 x; |
117 | __le16 y; | |
61dc1aba ND |
118 | } __packed; |
119 | ||
f3889ed1 ND |
120 | /* MXT_TOUCH_MULTI_T9 orient */ |
121 | #define MXT_T9_ORIENT_SWITCH (1 << 0) | |
7686b108 | 122 | |
81c88a71 | 123 | /* MXT_SPT_COMMSCONFIG_T18 */ |
7686b108 IV |
124 | #define MXT_COMMS_CTRL 0 |
125 | #define MXT_COMMS_CMD 1 | |
126 | ||
81c88a71 | 127 | /* Define for MXT_GEN_COMMAND_T6 */ |
7686b108 | 128 | #define MXT_BOOT_VALUE 0xa5 |
a4a2ef46 | 129 | #define MXT_RESET_VALUE 0x01 |
7686b108 | 130 | #define MXT_BACKUP_VALUE 0x55 |
a4a2ef46 | 131 | |
b23157dc ND |
132 | /* T100 Multiple Touch Touchscreen */ |
133 | #define MXT_T100_CTRL 0 | |
134 | #define MXT_T100_CFG1 1 | |
135 | #define MXT_T100_TCHAUX 3 | |
136 | #define MXT_T100_XRANGE 13 | |
137 | #define MXT_T100_YRANGE 24 | |
138 | ||
139 | #define MXT_T100_CFG_SWITCHXY BIT(5) | |
140 | ||
141 | #define MXT_T100_TCHAUX_VECT BIT(0) | |
142 | #define MXT_T100_TCHAUX_AMPL BIT(1) | |
143 | #define MXT_T100_TCHAUX_AREA BIT(2) | |
144 | ||
145 | #define MXT_T100_DETECT BIT(7) | |
146 | #define MXT_T100_TYPE_MASK 0x70 | |
147 | ||
148 | enum t100_type { | |
149 | MXT_T100_TYPE_FINGER = 1, | |
150 | MXT_T100_TYPE_PASSIVE_STYLUS = 2, | |
151 | MXT_T100_TYPE_HOVERING_FINGER = 4, | |
152 | MXT_T100_TYPE_GLOVE = 5, | |
153 | MXT_T100_TYPE_LARGE_TOUCH = 6, | |
154 | }; | |
155 | ||
156 | #define MXT_DISTANCE_ACTIVE_TOUCH 0 | |
157 | #define MXT_DISTANCE_HOVERING 1 | |
158 | ||
159 | #define MXT_TOUCH_MAJOR_DEFAULT 1 | |
160 | #define MXT_PRESSURE_DEFAULT 1 | |
161 | ||
a4a2ef46 | 162 | /* Delay times */ |
8343bce1 LT |
163 | #define MXT_BACKUP_TIME 50 /* msec */ |
164 | #define MXT_RESET_TIME 200 /* msec */ | |
a4a2ef46 | 165 | #define MXT_RESET_TIMEOUT 3000 /* msec */ |
c3f78043 | 166 | #define MXT_CRC_TIMEOUT 1000 /* msec */ |
a0434b75 BL |
167 | #define MXT_FW_RESET_TIME 3000 /* msec */ |
168 | #define MXT_FW_CHG_TIMEOUT 300 /* msec */ | |
4cf51c38 JS |
169 | |
170 | /* Command to unlock bootloader */ | |
7686b108 IV |
171 | #define MXT_UNLOCK_CMD_MSB 0xaa |
172 | #define MXT_UNLOCK_CMD_LSB 0xdc | |
4cf51c38 JS |
173 | |
174 | /* Bootloader mode status */ | |
7686b108 IV |
175 | #define MXT_WAITING_BOOTLOAD_CMD 0xc0 /* valid 7 6 bit only */ |
176 | #define MXT_WAITING_FRAME_DATA 0x80 /* valid 7 6 bit only */ | |
177 | #define MXT_FRAME_CRC_CHECK 0x02 | |
178 | #define MXT_FRAME_CRC_FAIL 0x03 | |
179 | #define MXT_FRAME_CRC_PASS 0x04 | |
180 | #define MXT_APP_CRC_FAIL 0x40 /* valid 7 8 bit only */ | |
181 | #define MXT_BOOT_STATUS_MASK 0x3f | |
e57a66aa ND |
182 | #define MXT_BOOT_EXTENDED_ID (1 << 5) |
183 | #define MXT_BOOT_ID_MASK 0x1f | |
4cf51c38 | 184 | |
4cf51c38 | 185 | /* Touchscreen absolute values */ |
7686b108 | 186 | #define MXT_MAX_AREA 0xff |
4cf51c38 | 187 | |
22dfab7f DK |
188 | #define MXT_PIXELS_PER_MM 20 |
189 | ||
7686b108 | 190 | struct mxt_info { |
4cf51c38 JS |
191 | u8 family_id; |
192 | u8 variant_id; | |
193 | u8 version; | |
194 | u8 build; | |
195 | u8 matrix_xsize; | |
196 | u8 matrix_ysize; | |
197 | u8 object_num; | |
198 | }; | |
199 | ||
7686b108 | 200 | struct mxt_object { |
4cf51c38 JS |
201 | u8 type; |
202 | u16 start_address; | |
1e0c0c5b DK |
203 | u8 size_minus_one; |
204 | u8 instances_minus_one; | |
4cf51c38 | 205 | u8 num_report_ids; |
333e5a9a | 206 | } __packed; |
4cf51c38 | 207 | |
4cf51c38 | 208 | /* Each client has this additional data */ |
7686b108 | 209 | struct mxt_data { |
4cf51c38 JS |
210 | struct i2c_client *client; |
211 | struct input_dev *input_dev; | |
ec02ac2b | 212 | char phys[64]; /* device physical location */ |
7686b108 IV |
213 | const struct mxt_platform_data *pdata; |
214 | struct mxt_object *object_table; | |
215 | struct mxt_info info; | |
4cf51c38 | 216 | unsigned int irq; |
910d8051 JS |
217 | unsigned int max_x; |
218 | unsigned int max_y; | |
1c0276d5 | 219 | bool xy_switch; |
d79e7e47 | 220 | bool in_bootloader; |
4ce6fa01 | 221 | u16 mem_size; |
b23157dc ND |
222 | u8 t100_aux_ampl; |
223 | u8 t100_aux_area; | |
224 | u8 t100_aux_vect; | |
9d8dc3e5 | 225 | u8 max_reportid; |
c3f78043 | 226 | u32 config_crc; |
4ce6fa01 | 227 | u32 info_crc; |
f28a842d | 228 | u8 bootloader_addr; |
5f3f9bc2 | 229 | u8 *msg_buf; |
497767d1 | 230 | u8 t6_status; |
b9b05a89 | 231 | bool update_input; |
9d8dc3e5 ND |
232 | u8 last_message_count; |
233 | u8 num_touchids; | |
b23157dc | 234 | u8 multitouch; |
7f3884f7 | 235 | struct t7_config t7_cfg; |
333e5a9a DK |
236 | |
237 | /* Cached parameters from object table */ | |
b9b05a89 | 238 | u16 T5_address; |
5f3f9bc2 | 239 | u8 T5_msg_size; |
fdf80421 | 240 | u8 T6_reportid; |
a4a2ef46 | 241 | u16 T6_address; |
4ce6fa01 | 242 | u16 T7_address; |
333e5a9a DK |
243 | u8 T9_reportid_min; |
244 | u8 T9_reportid_max; | |
22dfab7f | 245 | u8 T19_reportid; |
9d8dc3e5 | 246 | u16 T44_address; |
b23157dc ND |
247 | u8 T100_reportid_min; |
248 | u8 T100_reportid_max; | |
d79e7e47 BL |
249 | |
250 | /* for fw update in bootloader */ | |
251 | struct completion bl_completion; | |
a4a2ef46 IV |
252 | |
253 | /* for reset handling */ | |
254 | struct completion reset_completion; | |
c3f78043 ND |
255 | |
256 | /* for config update handling */ | |
257 | struct completion crc_completion; | |
4cf51c38 JS |
258 | }; |
259 | ||
1e0c0c5b DK |
260 | static size_t mxt_obj_size(const struct mxt_object *obj) |
261 | { | |
262 | return obj->size_minus_one + 1; | |
263 | } | |
264 | ||
265 | static size_t mxt_obj_instances(const struct mxt_object *obj) | |
266 | { | |
267 | return obj->instances_minus_one + 1; | |
268 | } | |
269 | ||
7686b108 | 270 | static bool mxt_object_readable(unsigned int type) |
4cf51c38 JS |
271 | { |
272 | switch (type) { | |
81c88a71 IV |
273 | case MXT_GEN_COMMAND_T6: |
274 | case MXT_GEN_POWER_T7: | |
275 | case MXT_GEN_ACQUIRE_T8: | |
276 | case MXT_GEN_DATASOURCE_T53: | |
277 | case MXT_TOUCH_MULTI_T9: | |
278 | case MXT_TOUCH_KEYARRAY_T15: | |
279 | case MXT_TOUCH_PROXIMITY_T23: | |
280 | case MXT_TOUCH_PROXKEY_T52: | |
281 | case MXT_PROCI_GRIPFACE_T20: | |
282 | case MXT_PROCG_NOISE_T22: | |
283 | case MXT_PROCI_ONETOUCH_T24: | |
284 | case MXT_PROCI_TWOTOUCH_T27: | |
285 | case MXT_PROCI_GRIP_T40: | |
286 | case MXT_PROCI_PALM_T41: | |
287 | case MXT_PROCI_TOUCHSUPPRESSION_T42: | |
288 | case MXT_PROCI_STYLUS_T47: | |
289 | case MXT_PROCG_NOISESUPPRESSION_T48: | |
290 | case MXT_SPT_COMMSCONFIG_T18: | |
291 | case MXT_SPT_GPIOPWM_T19: | |
292 | case MXT_SPT_SELFTEST_T25: | |
293 | case MXT_SPT_CTECONFIG_T28: | |
294 | case MXT_SPT_USERDATA_T38: | |
295 | case MXT_SPT_DIGITIZER_T43: | |
296 | case MXT_SPT_CTECONFIG_T46: | |
4cf51c38 JS |
297 | return true; |
298 | default: | |
299 | return false; | |
300 | } | |
301 | } | |
302 | ||
5f3f9bc2 | 303 | static void mxt_dump_message(struct mxt_data *data, u8 *message) |
4cf51c38 | 304 | { |
5f3f9bc2 ND |
305 | dev_dbg(&data->client->dev, "message: %*ph\n", |
306 | data->T5_msg_size, message); | |
4cf51c38 JS |
307 | } |
308 | ||
a4a2ef46 IV |
309 | static int mxt_wait_for_completion(struct mxt_data *data, |
310 | struct completion *comp, | |
311 | unsigned int timeout_ms) | |
d79e7e47 BL |
312 | { |
313 | struct device *dev = &data->client->dev; | |
d79e7e47 BL |
314 | unsigned long timeout = msecs_to_jiffies(timeout_ms); |
315 | long ret; | |
316 | ||
317 | ret = wait_for_completion_interruptible_timeout(comp, timeout); | |
318 | if (ret < 0) { | |
319 | return ret; | |
320 | } else if (ret == 0) { | |
321 | dev_err(dev, "Wait for completion timed out.\n"); | |
322 | return -ETIMEDOUT; | |
323 | } | |
324 | return 0; | |
325 | } | |
326 | ||
f28a842d ND |
327 | static int mxt_bootloader_read(struct mxt_data *data, |
328 | u8 *val, unsigned int count) | |
329 | { | |
330 | int ret; | |
331 | struct i2c_msg msg; | |
332 | ||
333 | msg.addr = data->bootloader_addr; | |
334 | msg.flags = data->client->flags & I2C_M_TEN; | |
335 | msg.flags |= I2C_M_RD; | |
336 | msg.len = count; | |
337 | msg.buf = val; | |
338 | ||
339 | ret = i2c_transfer(data->client->adapter, &msg, 1); | |
f28a842d ND |
340 | if (ret == 1) { |
341 | ret = 0; | |
342 | } else { | |
343 | ret = ret < 0 ? ret : -EIO; | |
344 | dev_err(&data->client->dev, "%s: i2c recv failed (%d)\n", | |
345 | __func__, ret); | |
346 | } | |
347 | ||
348 | return ret; | |
349 | } | |
350 | ||
351 | static int mxt_bootloader_write(struct mxt_data *data, | |
352 | const u8 * const val, unsigned int count) | |
353 | { | |
354 | int ret; | |
355 | struct i2c_msg msg; | |
356 | ||
357 | msg.addr = data->bootloader_addr; | |
358 | msg.flags = data->client->flags & I2C_M_TEN; | |
359 | msg.len = count; | |
360 | msg.buf = (u8 *)val; | |
361 | ||
362 | ret = i2c_transfer(data->client->adapter, &msg, 1); | |
363 | if (ret == 1) { | |
364 | ret = 0; | |
365 | } else { | |
366 | ret = ret < 0 ? ret : -EIO; | |
367 | dev_err(&data->client->dev, "%s: i2c send failed (%d)\n", | |
368 | __func__, ret); | |
369 | } | |
370 | ||
371 | return ret; | |
372 | } | |
373 | ||
8efaa5e5 | 374 | static int mxt_lookup_bootloader_address(struct mxt_data *data, bool retry) |
f28a842d ND |
375 | { |
376 | u8 appmode = data->client->addr; | |
377 | u8 bootloader; | |
378 | ||
379 | switch (appmode) { | |
380 | case 0x4a: | |
381 | case 0x4b: | |
44a0bab2 | 382 | /* Chips after 1664S use different scheme */ |
8efaa5e5 | 383 | if (retry || data->info.family_id >= 0xa2) { |
44a0bab2 ND |
384 | bootloader = appmode - 0x24; |
385 | break; | |
386 | } | |
387 | /* Fall through for normal case */ | |
f28a842d ND |
388 | case 0x4c: |
389 | case 0x4d: | |
390 | case 0x5a: | |
391 | case 0x5b: | |
392 | bootloader = appmode - 0x26; | |
393 | break; | |
6cd1ab0f | 394 | |
f28a842d ND |
395 | default: |
396 | dev_err(&data->client->dev, | |
397 | "Appmode i2c address 0x%02x not found\n", | |
398 | appmode); | |
399 | return -EINVAL; | |
400 | } | |
401 | ||
402 | data->bootloader_addr = bootloader; | |
403 | return 0; | |
404 | } | |
405 | ||
6cd1ab0f | 406 | static int mxt_probe_bootloader(struct mxt_data *data, bool alt_address) |
a9fdd1e6 ND |
407 | { |
408 | struct device *dev = &data->client->dev; | |
6cd1ab0f | 409 | int error; |
a9fdd1e6 ND |
410 | u8 val; |
411 | bool crc_failure; | |
412 | ||
6cd1ab0f DT |
413 | error = mxt_lookup_bootloader_address(data, alt_address); |
414 | if (error) | |
415 | return error; | |
a9fdd1e6 | 416 | |
6cd1ab0f DT |
417 | error = mxt_bootloader_read(data, &val, 1); |
418 | if (error) | |
419 | return error; | |
a9fdd1e6 ND |
420 | |
421 | /* Check app crc fail mode */ | |
422 | crc_failure = (val & ~MXT_BOOT_STATUS_MASK) == MXT_APP_CRC_FAIL; | |
423 | ||
424 | dev_err(dev, "Detected bootloader, status:%02X%s\n", | |
425 | val, crc_failure ? ", APP_CRC_FAIL" : ""); | |
426 | ||
427 | return 0; | |
428 | } | |
429 | ||
e57a66aa ND |
430 | static u8 mxt_get_bootloader_version(struct mxt_data *data, u8 val) |
431 | { | |
432 | struct device *dev = &data->client->dev; | |
433 | u8 buf[3]; | |
434 | ||
435 | if (val & MXT_BOOT_EXTENDED_ID) { | |
436 | if (mxt_bootloader_read(data, &buf[0], 3) != 0) { | |
437 | dev_err(dev, "%s: i2c failure\n", __func__); | |
68807a0c | 438 | return val; |
e57a66aa ND |
439 | } |
440 | ||
441 | dev_dbg(dev, "Bootloader ID:%d Version:%d\n", buf[1], buf[2]); | |
442 | ||
443 | return buf[0]; | |
444 | } else { | |
445 | dev_dbg(dev, "Bootloader ID:%d\n", val & MXT_BOOT_ID_MASK); | |
446 | ||
447 | return val; | |
448 | } | |
449 | } | |
450 | ||
385deb96 ND |
451 | static int mxt_check_bootloader(struct mxt_data *data, unsigned int state, |
452 | bool wait) | |
4cf51c38 | 453 | { |
f28a842d | 454 | struct device *dev = &data->client->dev; |
4cf51c38 | 455 | u8 val; |
d79e7e47 | 456 | int ret; |
4cf51c38 JS |
457 | |
458 | recheck: | |
385deb96 | 459 | if (wait) { |
d79e7e47 BL |
460 | /* |
461 | * In application update mode, the interrupt | |
462 | * line signals state transitions. We must wait for the | |
463 | * CHG assertion before reading the status byte. | |
464 | * Once the status byte has been read, the line is deasserted. | |
465 | */ | |
a4a2ef46 IV |
466 | ret = mxt_wait_for_completion(data, &data->bl_completion, |
467 | MXT_FW_CHG_TIMEOUT); | |
d79e7e47 BL |
468 | if (ret) { |
469 | /* | |
470 | * TODO: handle -ERESTARTSYS better by terminating | |
471 | * fw update process before returning to userspace | |
472 | * by writing length 0x000 to device (iff we are in | |
473 | * WAITING_FRAME_DATA state). | |
474 | */ | |
f28a842d | 475 | dev_err(dev, "Update wait error %d\n", ret); |
d79e7e47 BL |
476 | return ret; |
477 | } | |
478 | } | |
479 | ||
f28a842d ND |
480 | ret = mxt_bootloader_read(data, &val, 1); |
481 | if (ret) | |
482 | return ret; | |
4cf51c38 | 483 | |
e57a66aa ND |
484 | if (state == MXT_WAITING_BOOTLOAD_CMD) |
485 | val = mxt_get_bootloader_version(data, val); | |
486 | ||
4cf51c38 | 487 | switch (state) { |
7686b108 IV |
488 | case MXT_WAITING_BOOTLOAD_CMD: |
489 | case MXT_WAITING_FRAME_DATA: | |
a9fdd1e6 | 490 | case MXT_APP_CRC_FAIL: |
7686b108 | 491 | val &= ~MXT_BOOT_STATUS_MASK; |
4cf51c38 | 492 | break; |
7686b108 | 493 | case MXT_FRAME_CRC_PASS: |
f943c74a | 494 | if (val == MXT_FRAME_CRC_CHECK) { |
4cf51c38 | 495 | goto recheck; |
f943c74a ND |
496 | } else if (val == MXT_FRAME_CRC_FAIL) { |
497 | dev_err(dev, "Bootloader CRC fail\n"); | |
498 | return -EINVAL; | |
499 | } | |
4cf51c38 JS |
500 | break; |
501 | default: | |
502 | return -EINVAL; | |
503 | } | |
504 | ||
505 | if (val != state) { | |
f28a842d | 506 | dev_err(dev, "Invalid bootloader state %02X != %02X\n", |
7bed6805 | 507 | val, state); |
4cf51c38 JS |
508 | return -EINVAL; |
509 | } | |
510 | ||
511 | return 0; | |
512 | } | |
513 | ||
8efaa5e5 | 514 | static int mxt_send_bootloader_cmd(struct mxt_data *data, bool unlock) |
4cf51c38 | 515 | { |
f28a842d | 516 | int ret; |
4cf51c38 JS |
517 | u8 buf[2]; |
518 | ||
8efaa5e5 ND |
519 | if (unlock) { |
520 | buf[0] = MXT_UNLOCK_CMD_LSB; | |
521 | buf[1] = MXT_UNLOCK_CMD_MSB; | |
522 | } else { | |
523 | buf[0] = 0x01; | |
524 | buf[1] = 0x01; | |
525 | } | |
4cf51c38 | 526 | |
f28a842d ND |
527 | ret = mxt_bootloader_write(data, buf, 2); |
528 | if (ret) | |
529 | return ret; | |
4cf51c38 JS |
530 | |
531 | return 0; | |
532 | } | |
533 | ||
7686b108 | 534 | static int __mxt_read_reg(struct i2c_client *client, |
4cf51c38 JS |
535 | u16 reg, u16 len, void *val) |
536 | { | |
537 | struct i2c_msg xfer[2]; | |
538 | u8 buf[2]; | |
771733e3 | 539 | int ret; |
4cf51c38 JS |
540 | |
541 | buf[0] = reg & 0xff; | |
542 | buf[1] = (reg >> 8) & 0xff; | |
543 | ||
544 | /* Write register */ | |
545 | xfer[0].addr = client->addr; | |
546 | xfer[0].flags = 0; | |
547 | xfer[0].len = 2; | |
548 | xfer[0].buf = buf; | |
549 | ||
550 | /* Read data */ | |
551 | xfer[1].addr = client->addr; | |
552 | xfer[1].flags = I2C_M_RD; | |
553 | xfer[1].len = len; | |
554 | xfer[1].buf = val; | |
555 | ||
771733e3 DK |
556 | ret = i2c_transfer(client->adapter, xfer, 2); |
557 | if (ret == 2) { | |
558 | ret = 0; | |
559 | } else { | |
560 | if (ret >= 0) | |
561 | ret = -EIO; | |
562 | dev_err(&client->dev, "%s: i2c transfer failed (%d)\n", | |
563 | __func__, ret); | |
4cf51c38 JS |
564 | } |
565 | ||
771733e3 | 566 | return ret; |
4cf51c38 JS |
567 | } |
568 | ||
9638ab7c DK |
569 | static int __mxt_write_reg(struct i2c_client *client, u16 reg, u16 len, |
570 | const void *val) | |
4cf51c38 | 571 | { |
9638ab7c DK |
572 | u8 *buf; |
573 | size_t count; | |
771733e3 | 574 | int ret; |
4cf51c38 | 575 | |
9638ab7c DK |
576 | count = len + 2; |
577 | buf = kmalloc(count, GFP_KERNEL); | |
578 | if (!buf) | |
579 | return -ENOMEM; | |
4cf51c38 JS |
580 | |
581 | buf[0] = reg & 0xff; | |
582 | buf[1] = (reg >> 8) & 0xff; | |
9638ab7c | 583 | memcpy(&buf[2], val, len); |
4cf51c38 | 584 | |
9638ab7c DK |
585 | ret = i2c_master_send(client, buf, count); |
586 | if (ret == count) { | |
771733e3 DK |
587 | ret = 0; |
588 | } else { | |
589 | if (ret >= 0) | |
590 | ret = -EIO; | |
591 | dev_err(&client->dev, "%s: i2c send failed (%d)\n", | |
592 | __func__, ret); | |
4cf51c38 JS |
593 | } |
594 | ||
9638ab7c | 595 | kfree(buf); |
771733e3 | 596 | return ret; |
4cf51c38 JS |
597 | } |
598 | ||
9638ab7c | 599 | static int mxt_write_reg(struct i2c_client *client, u16 reg, u8 val) |
4cf51c38 | 600 | { |
9638ab7c | 601 | return __mxt_write_reg(client, reg, 1, &val); |
4cf51c38 JS |
602 | } |
603 | ||
7686b108 IV |
604 | static struct mxt_object * |
605 | mxt_get_object(struct mxt_data *data, u8 type) | |
4cf51c38 | 606 | { |
7686b108 | 607 | struct mxt_object *object; |
4cf51c38 JS |
608 | int i; |
609 | ||
610 | for (i = 0; i < data->info.object_num; i++) { | |
611 | object = data->object_table + i; | |
612 | if (object->type == type) | |
613 | return object; | |
614 | } | |
615 | ||
50a77c65 | 616 | dev_warn(&data->client->dev, "Invalid object type T%u\n", type); |
4cf51c38 JS |
617 | return NULL; |
618 | } | |
619 | ||
497767d1 ND |
620 | static void mxt_proc_t6_messages(struct mxt_data *data, u8 *msg) |
621 | { | |
622 | struct device *dev = &data->client->dev; | |
623 | u8 status = msg[1]; | |
624 | u32 crc = msg[2] | (msg[3] << 8) | (msg[4] << 16); | |
625 | ||
626 | complete(&data->crc_completion); | |
627 | ||
628 | if (crc != data->config_crc) { | |
629 | data->config_crc = crc; | |
630 | dev_dbg(dev, "T6 Config Checksum: 0x%06X\n", crc); | |
631 | } | |
632 | ||
633 | /* Detect reset */ | |
634 | if (status & MXT_T6_STATUS_RESET) | |
635 | complete(&data->reset_completion); | |
636 | ||
637 | /* Output debug if status has changed */ | |
638 | if (status != data->t6_status) | |
639 | dev_dbg(dev, "T6 Status 0x%02X%s%s%s%s%s%s%s\n", | |
640 | status, | |
641 | status == 0 ? " OK" : "", | |
642 | status & MXT_T6_STATUS_RESET ? " RESET" : "", | |
643 | status & MXT_T6_STATUS_OFL ? " OFL" : "", | |
644 | status & MXT_T6_STATUS_SIGERR ? " SIGERR" : "", | |
645 | status & MXT_T6_STATUS_CAL ? " CAL" : "", | |
646 | status & MXT_T6_STATUS_CFGERR ? " CFGERR" : "", | |
647 | status & MXT_T6_STATUS_COMSERR ? " COMSERR" : ""); | |
648 | ||
649 | /* Save current status */ | |
650 | data->t6_status = status; | |
651 | } | |
652 | ||
7f405483 LT |
653 | static int mxt_write_object(struct mxt_data *data, |
654 | u8 type, u8 offset, u8 val) | |
655 | { | |
656 | struct mxt_object *object; | |
657 | u16 reg; | |
658 | ||
659 | object = mxt_get_object(data, type); | |
660 | if (!object || offset >= mxt_obj_size(object)) | |
661 | return -EINVAL; | |
662 | ||
663 | reg = object->start_address; | |
664 | return mxt_write_reg(data->client, reg + offset, val); | |
665 | } | |
666 | ||
5f3f9bc2 | 667 | static void mxt_input_button(struct mxt_data *data, u8 *message) |
22dfab7f DK |
668 | { |
669 | struct input_dev *input = data->input_dev; | |
fb5e4c3e | 670 | const struct mxt_platform_data *pdata = data->pdata; |
22dfab7f DK |
671 | int i; |
672 | ||
fb5e4c3e ND |
673 | for (i = 0; i < pdata->t19_num_keys; i++) { |
674 | if (pdata->t19_keymap[i] == KEY_RESERVED) | |
22dfab7f | 675 | continue; |
c37f6d38 DT |
676 | |
677 | /* Active-low switch */ | |
678 | input_report_key(input, pdata->t19_keymap[i], | |
679 | !(message[1] & BIT(i))); | |
22dfab7f DK |
680 | } |
681 | } | |
682 | ||
b735fbe0 | 683 | static void mxt_input_sync(struct mxt_data *data) |
eef820dc | 684 | { |
b735fbe0 BL |
685 | input_mt_report_pointer_emulation(data->input_dev, |
686 | data->pdata->t19_num_keys); | |
687 | input_sync(data->input_dev); | |
eef820dc ND |
688 | } |
689 | ||
b9b05a89 | 690 | static void mxt_proc_t9_message(struct mxt_data *data, u8 *message) |
4cf51c38 | 691 | { |
4cf51c38 | 692 | struct device *dev = &data->client->dev; |
fba5bc31 | 693 | struct input_dev *input_dev = data->input_dev; |
5f3f9bc2 ND |
694 | int id; |
695 | u8 status; | |
4cf51c38 JS |
696 | int x; |
697 | int y; | |
698 | int area; | |
fea9e467 | 699 | int amplitude; |
4cf51c38 | 700 | |
5f3f9bc2 ND |
701 | id = message[0] - data->T9_reportid_min; |
702 | status = message[1]; | |
703 | x = (message[2] << 4) | ((message[4] >> 4) & 0xf); | |
704 | y = (message[3] << 4) | ((message[4] & 0xf)); | |
eef820dc ND |
705 | |
706 | /* Handle 10/12 bit switching */ | |
910d8051 | 707 | if (data->max_x < 1024) |
eef820dc | 708 | x >>= 2; |
910d8051 | 709 | if (data->max_y < 1024) |
eef820dc | 710 | y >>= 2; |
910d8051 | 711 | |
5f3f9bc2 ND |
712 | area = message[5]; |
713 | amplitude = message[6]; | |
4cf51c38 | 714 | |
b2e459b8 DK |
715 | dev_dbg(dev, |
716 | "[%u] %c%c%c%c%c%c%c%c x: %5u y: %5u area: %3u amp: %3u\n", | |
717 | id, | |
f3889ed1 ND |
718 | (status & MXT_T9_DETECT) ? 'D' : '.', |
719 | (status & MXT_T9_PRESS) ? 'P' : '.', | |
720 | (status & MXT_T9_RELEASE) ? 'R' : '.', | |
721 | (status & MXT_T9_MOVE) ? 'M' : '.', | |
722 | (status & MXT_T9_VECTOR) ? 'V' : '.', | |
723 | (status & MXT_T9_AMP) ? 'A' : '.', | |
724 | (status & MXT_T9_SUPPRESS) ? 'S' : '.', | |
725 | (status & MXT_T9_UNGRIP) ? 'U' : '.', | |
fea9e467 | 726 | x, y, area, amplitude); |
b2e459b8 | 727 | |
fba5bc31 | 728 | input_mt_slot(input_dev, id); |
fba5bc31 | 729 | |
f3889ed1 | 730 | if (status & MXT_T9_DETECT) { |
eef820dc ND |
731 | /* |
732 | * Multiple bits may be set if the host is slow to read | |
733 | * the status messages, indicating all the events that | |
734 | * have happened. | |
735 | */ | |
736 | if (status & MXT_T9_RELEASE) { | |
737 | input_mt_report_slot_state(input_dev, | |
738 | MT_TOOL_FINGER, 0); | |
b735fbe0 | 739 | mxt_input_sync(data); |
eef820dc ND |
740 | } |
741 | ||
742 | /* Touch active */ | |
743 | input_mt_report_slot_state(input_dev, MT_TOOL_FINGER, 1); | |
fba5bc31 DK |
744 | input_report_abs(input_dev, ABS_MT_POSITION_X, x); |
745 | input_report_abs(input_dev, ABS_MT_POSITION_Y, y); | |
fea9e467 | 746 | input_report_abs(input_dev, ABS_MT_PRESSURE, amplitude); |
fba5bc31 | 747 | input_report_abs(input_dev, ABS_MT_TOUCH_MAJOR, area); |
eef820dc ND |
748 | } else { |
749 | /* Touch no longer active, close out slot */ | |
750 | input_mt_report_slot_state(input_dev, MT_TOOL_FINGER, 0); | |
fba5bc31 | 751 | } |
b9b05a89 ND |
752 | |
753 | data->update_input = true; | |
4cf51c38 | 754 | } |
4cf51c38 | 755 | |
b23157dc ND |
756 | static void mxt_proc_t100_message(struct mxt_data *data, u8 *message) |
757 | { | |
758 | struct device *dev = &data->client->dev; | |
759 | struct input_dev *input_dev = data->input_dev; | |
760 | int id; | |
761 | u8 status; | |
762 | u8 type = 0; | |
763 | u16 x; | |
764 | u16 y; | |
765 | int distance = 0; | |
766 | int tool = 0; | |
767 | u8 major = 0; | |
768 | u8 pressure = 0; | |
769 | u8 orientation = 0; | |
770 | ||
771 | id = message[0] - data->T100_reportid_min - 2; | |
772 | ||
773 | /* ignore SCRSTATUS events */ | |
774 | if (id < 0) | |
775 | return; | |
776 | ||
777 | status = message[1]; | |
778 | x = get_unaligned_le16(&message[2]); | |
779 | y = get_unaligned_le16(&message[4]); | |
780 | ||
781 | if (status & MXT_T100_DETECT) { | |
782 | type = (status & MXT_T100_TYPE_MASK) >> 4; | |
783 | ||
784 | switch (type) { | |
785 | case MXT_T100_TYPE_HOVERING_FINGER: | |
786 | tool = MT_TOOL_FINGER; | |
787 | distance = MXT_DISTANCE_HOVERING; | |
788 | ||
789 | if (data->t100_aux_vect) | |
790 | orientation = message[data->t100_aux_vect]; | |
791 | ||
792 | break; | |
793 | ||
794 | case MXT_T100_TYPE_FINGER: | |
795 | case MXT_T100_TYPE_GLOVE: | |
796 | tool = MT_TOOL_FINGER; | |
797 | distance = MXT_DISTANCE_ACTIVE_TOUCH; | |
798 | ||
799 | if (data->t100_aux_area) | |
800 | major = message[data->t100_aux_area]; | |
801 | ||
802 | if (data->t100_aux_ampl) | |
803 | pressure = message[data->t100_aux_ampl]; | |
804 | ||
805 | if (data->t100_aux_vect) | |
806 | orientation = message[data->t100_aux_vect]; | |
807 | ||
808 | break; | |
809 | ||
810 | case MXT_T100_TYPE_PASSIVE_STYLUS: | |
811 | tool = MT_TOOL_PEN; | |
812 | ||
813 | /* | |
814 | * Passive stylus is reported with size zero so | |
815 | * hardcode. | |
816 | */ | |
817 | major = MXT_TOUCH_MAJOR_DEFAULT; | |
818 | ||
819 | if (data->t100_aux_ampl) | |
820 | pressure = message[data->t100_aux_ampl]; | |
821 | ||
822 | break; | |
823 | ||
824 | case MXT_T100_TYPE_LARGE_TOUCH: | |
825 | /* Ignore suppressed touch */ | |
826 | break; | |
827 | ||
828 | default: | |
829 | dev_dbg(dev, "Unexpected T100 type\n"); | |
830 | return; | |
831 | } | |
832 | } | |
833 | ||
834 | /* | |
835 | * Values reported should be non-zero if tool is touching the | |
836 | * device | |
837 | */ | |
838 | if (!pressure && type != MXT_T100_TYPE_HOVERING_FINGER) | |
839 | pressure = MXT_PRESSURE_DEFAULT; | |
840 | ||
841 | input_mt_slot(input_dev, id); | |
842 | ||
843 | if (status & MXT_T100_DETECT) { | |
844 | dev_dbg(dev, "[%u] type:%u x:%u y:%u a:%02X p:%02X v:%02X\n", | |
845 | id, type, x, y, major, pressure, orientation); | |
846 | ||
847 | input_mt_report_slot_state(input_dev, tool, 1); | |
848 | input_report_abs(input_dev, ABS_MT_POSITION_X, x); | |
849 | input_report_abs(input_dev, ABS_MT_POSITION_Y, y); | |
850 | input_report_abs(input_dev, ABS_MT_TOUCH_MAJOR, major); | |
851 | input_report_abs(input_dev, ABS_MT_PRESSURE, pressure); | |
852 | input_report_abs(input_dev, ABS_MT_DISTANCE, distance); | |
853 | input_report_abs(input_dev, ABS_MT_ORIENTATION, orientation); | |
854 | } else { | |
855 | dev_dbg(dev, "[%u] release\n", id); | |
856 | ||
857 | /* close out slot */ | |
858 | input_mt_report_slot_state(input_dev, 0, 0); | |
859 | } | |
860 | ||
861 | data->update_input = true; | |
862 | } | |
863 | ||
b9b05a89 | 864 | static int mxt_proc_message(struct mxt_data *data, u8 *message) |
04a79181 | 865 | { |
b9b05a89 ND |
866 | u8 report_id = message[0]; |
867 | ||
868 | if (report_id == MXT_RPTID_NOMSG) | |
869 | return 0; | |
870 | ||
871 | if (report_id == data->T6_reportid) { | |
872 | mxt_proc_t6_messages(data, message); | |
873 | } else if (!data->input_dev) { | |
874 | /* | |
875 | * Do not report events if input device | |
876 | * is not yet registered. | |
877 | */ | |
878 | mxt_dump_message(data, message); | |
b23157dc ND |
879 | } else if (report_id >= data->T9_reportid_min && |
880 | report_id <= data->T9_reportid_max) { | |
b9b05a89 | 881 | mxt_proc_t9_message(data, message); |
b23157dc ND |
882 | } else if (report_id >= data->T100_reportid_min && |
883 | report_id <= data->T100_reportid_max) { | |
884 | mxt_proc_t100_message(data, message); | |
b9b05a89 ND |
885 | } else if (report_id == data->T19_reportid) { |
886 | mxt_input_button(data, message); | |
887 | data->update_input = true; | |
888 | } else { | |
889 | mxt_dump_message(data, message); | |
890 | } | |
891 | ||
892 | return 1; | |
4cf51c38 JS |
893 | } |
894 | ||
9d8dc3e5 | 895 | static int mxt_read_and_process_messages(struct mxt_data *data, u8 count) |
4cf51c38 | 896 | { |
4cf51c38 | 897 | struct device *dev = &data->client->dev; |
b9b05a89 | 898 | int ret; |
9d8dc3e5 ND |
899 | int i; |
900 | u8 num_valid = 0; | |
901 | ||
902 | /* Safety check for msg_buf */ | |
903 | if (count > data->max_reportid) | |
904 | return -EINVAL; | |
4cf51c38 | 905 | |
9d8dc3e5 | 906 | /* Process remaining messages if necessary */ |
b9b05a89 | 907 | ret = __mxt_read_reg(data->client, data->T5_address, |
9d8dc3e5 | 908 | data->T5_msg_size * count, data->msg_buf); |
b9b05a89 | 909 | if (ret) { |
9d8dc3e5 | 910 | dev_err(dev, "Failed to read %u messages (%d)\n", count, ret); |
b9b05a89 ND |
911 | return ret; |
912 | } | |
4cf51c38 | 913 | |
9d8dc3e5 ND |
914 | for (i = 0; i < count; i++) { |
915 | ret = mxt_proc_message(data, | |
916 | data->msg_buf + data->T5_msg_size * i); | |
917 | ||
918 | if (ret == 1) | |
919 | num_valid++; | |
920 | } | |
921 | ||
922 | /* return number of messages read */ | |
923 | return num_valid; | |
b9b05a89 | 924 | } |
4cf51c38 | 925 | |
9d8dc3e5 | 926 | static irqreturn_t mxt_process_messages_t44(struct mxt_data *data) |
b9b05a89 | 927 | { |
9d8dc3e5 | 928 | struct device *dev = &data->client->dev; |
b9b05a89 | 929 | int ret; |
9d8dc3e5 | 930 | u8 count, num_left; |
4cf51c38 | 931 | |
9d8dc3e5 ND |
932 | /* Read T44 and T5 together */ |
933 | ret = __mxt_read_reg(data->client, data->T44_address, | |
934 | data->T5_msg_size + 1, data->msg_buf); | |
935 | if (ret) { | |
936 | dev_err(dev, "Failed to read T44 and T5 (%d)\n", ret); | |
937 | return IRQ_NONE; | |
938 | } | |
939 | ||
940 | count = data->msg_buf[0]; | |
941 | ||
507584e2 ND |
942 | /* |
943 | * This condition may be caused by the CHG line being configured in | |
944 | * Mode 0. It results in unnecessary I2C operations but it is benign. | |
945 | */ | |
946 | if (count == 0) | |
9d8dc3e5 | 947 | return IRQ_NONE; |
507584e2 ND |
948 | |
949 | if (count > data->max_reportid) { | |
950 | dev_warn(dev, "T44 count %d exceeded max report id\n", count); | |
9d8dc3e5 ND |
951 | count = data->max_reportid; |
952 | } | |
953 | ||
954 | /* Process first message */ | |
955 | ret = mxt_proc_message(data, data->msg_buf + 1); | |
956 | if (ret < 0) { | |
957 | dev_warn(dev, "Unexpected invalid message\n"); | |
958 | return IRQ_NONE; | |
959 | } | |
960 | ||
961 | num_left = count - 1; | |
962 | ||
963 | /* Process remaining messages if necessary */ | |
964 | if (num_left) { | |
965 | ret = mxt_read_and_process_messages(data, num_left); | |
b9b05a89 | 966 | if (ret < 0) |
9d8dc3e5 ND |
967 | goto end; |
968 | else if (ret != num_left) | |
969 | dev_warn(dev, "Unexpected invalid message\n"); | |
970 | } | |
971 | ||
972 | end: | |
973 | if (data->update_input) { | |
974 | mxt_input_sync(data); | |
975 | data->update_input = false; | |
976 | } | |
977 | ||
978 | return IRQ_HANDLED; | |
979 | } | |
980 | ||
981 | static int mxt_process_messages_until_invalid(struct mxt_data *data) | |
982 | { | |
983 | struct device *dev = &data->client->dev; | |
984 | int count, read; | |
985 | u8 tries = 2; | |
986 | ||
987 | count = data->max_reportid; | |
988 | ||
989 | /* Read messages until we force an invalid */ | |
990 | do { | |
991 | read = mxt_read_and_process_messages(data, count); | |
992 | if (read < count) | |
993 | return 0; | |
994 | } while (--tries); | |
995 | ||
996 | if (data->update_input) { | |
997 | mxt_input_sync(data); | |
998 | data->update_input = false; | |
999 | } | |
1000 | ||
1001 | dev_err(dev, "CHG pin isn't cleared\n"); | |
1002 | return -EBUSY; | |
1003 | } | |
1004 | ||
1005 | static irqreturn_t mxt_process_messages(struct mxt_data *data) | |
1006 | { | |
1007 | int total_handled, num_handled; | |
1008 | u8 count = data->last_message_count; | |
1009 | ||
1010 | if (count < 1 || count > data->max_reportid) | |
1011 | count = 1; | |
1012 | ||
1013 | /* include final invalid message */ | |
1014 | total_handled = mxt_read_and_process_messages(data, count + 1); | |
1015 | if (total_handled < 0) | |
1016 | return IRQ_NONE; | |
1017 | /* if there were invalid messages, then we are done */ | |
1018 | else if (total_handled <= count) | |
1019 | goto update_count; | |
1020 | ||
1021 | /* keep reading two msgs until one is invalid or reportid limit */ | |
1022 | do { | |
1023 | num_handled = mxt_read_and_process_messages(data, 2); | |
1024 | if (num_handled < 0) | |
b9b05a89 | 1025 | return IRQ_NONE; |
9d8dc3e5 ND |
1026 | |
1027 | total_handled += num_handled; | |
1028 | ||
1029 | if (num_handled < 2) | |
1030 | break; | |
1031 | } while (total_handled < data->num_touchids); | |
1032 | ||
1033 | update_count: | |
1034 | data->last_message_count = total_handled; | |
b9b05a89 ND |
1035 | |
1036 | if (data->update_input) { | |
b735fbe0 | 1037 | mxt_input_sync(data); |
b9b05a89 ND |
1038 | data->update_input = false; |
1039 | } | |
64464ae8 | 1040 | |
4cf51c38 JS |
1041 | return IRQ_HANDLED; |
1042 | } | |
1043 | ||
d79e7e47 BL |
1044 | static irqreturn_t mxt_interrupt(int irq, void *dev_id) |
1045 | { | |
1046 | struct mxt_data *data = dev_id; | |
1047 | ||
1048 | if (data->in_bootloader) { | |
1049 | /* bootloader state transition completion */ | |
1050 | complete(&data->bl_completion); | |
1051 | return IRQ_HANDLED; | |
1052 | } | |
1053 | ||
dd24dcf5 ND |
1054 | if (!data->object_table) |
1055 | return IRQ_HANDLED; | |
1056 | ||
9d8dc3e5 ND |
1057 | if (data->T44_address) { |
1058 | return mxt_process_messages_t44(data); | |
1059 | } else { | |
1060 | return mxt_process_messages(data); | |
1061 | } | |
d79e7e47 BL |
1062 | } |
1063 | ||
a4a2ef46 IV |
1064 | static int mxt_t6_command(struct mxt_data *data, u16 cmd_offset, |
1065 | u8 value, bool wait) | |
1066 | { | |
1067 | u16 reg; | |
1068 | u8 command_register; | |
1069 | int timeout_counter = 0; | |
1070 | int ret; | |
1071 | ||
1072 | reg = data->T6_address + cmd_offset; | |
1073 | ||
1074 | ret = mxt_write_reg(data->client, reg, value); | |
1075 | if (ret) | |
1076 | return ret; | |
1077 | ||
1078 | if (!wait) | |
1079 | return 0; | |
1080 | ||
1081 | do { | |
1082 | msleep(20); | |
1083 | ret = __mxt_read_reg(data->client, reg, 1, &command_register); | |
1084 | if (ret) | |
1085 | return ret; | |
1086 | } while (command_register != 0 && timeout_counter++ <= 100); | |
1087 | ||
1088 | if (timeout_counter > 100) { | |
1089 | dev_err(&data->client->dev, "Command failed!\n"); | |
1090 | return -EIO; | |
1091 | } | |
1092 | ||
1093 | return 0; | |
1094 | } | |
1095 | ||
eb43335c ND |
1096 | static int mxt_acquire_irq(struct mxt_data *data) |
1097 | { | |
1098 | int error; | |
1099 | ||
1100 | enable_irq(data->irq); | |
1101 | ||
1102 | error = mxt_process_messages_until_invalid(data); | |
1103 | if (error) | |
1104 | return error; | |
1105 | ||
1106 | return 0; | |
1107 | } | |
1108 | ||
a4a2ef46 IV |
1109 | static int mxt_soft_reset(struct mxt_data *data) |
1110 | { | |
1111 | struct device *dev = &data->client->dev; | |
1112 | int ret = 0; | |
1113 | ||
885f3fb9 ND |
1114 | dev_info(dev, "Resetting device\n"); |
1115 | ||
1116 | disable_irq(data->irq); | |
a4a2ef46 IV |
1117 | |
1118 | reinit_completion(&data->reset_completion); | |
1119 | ||
1120 | ret = mxt_t6_command(data, MXT_COMMAND_RESET, MXT_RESET_VALUE, false); | |
1121 | if (ret) | |
1122 | return ret; | |
1123 | ||
885f3fb9 ND |
1124 | /* Ignore CHG line for 100ms after reset */ |
1125 | msleep(100); | |
1126 | ||
eb43335c | 1127 | mxt_acquire_irq(data); |
885f3fb9 | 1128 | |
a4a2ef46 IV |
1129 | ret = mxt_wait_for_completion(data, &data->reset_completion, |
1130 | MXT_RESET_TIMEOUT); | |
1131 | if (ret) | |
1132 | return ret; | |
1133 | ||
1134 | return 0; | |
1135 | } | |
1136 | ||
c3f78043 ND |
1137 | static void mxt_update_crc(struct mxt_data *data, u8 cmd, u8 value) |
1138 | { | |
1139 | /* | |
1140 | * On failure, CRC is set to 0 and config will always be | |
1141 | * downloaded. | |
1142 | */ | |
1143 | data->config_crc = 0; | |
1144 | reinit_completion(&data->crc_completion); | |
1145 | ||
1146 | mxt_t6_command(data, cmd, value, true); | |
1147 | ||
1148 | /* | |
1149 | * Wait for crc message. On failure, CRC is set to 0 and config will | |
1150 | * always be downloaded. | |
1151 | */ | |
1152 | mxt_wait_for_completion(data, &data->crc_completion, MXT_CRC_TIMEOUT); | |
1153 | } | |
1154 | ||
4ce6fa01 ND |
1155 | static void mxt_calc_crc24(u32 *crc, u8 firstbyte, u8 secondbyte) |
1156 | { | |
1157 | static const unsigned int crcpoly = 0x80001B; | |
1158 | u32 result; | |
1159 | u32 data_word; | |
1160 | ||
1161 | data_word = (secondbyte << 8) | firstbyte; | |
1162 | result = ((*crc << 1) ^ data_word); | |
1163 | ||
1164 | if (result & 0x1000000) | |
1165 | result ^= crcpoly; | |
1166 | ||
1167 | *crc = result; | |
1168 | } | |
1169 | ||
1170 | static u32 mxt_calculate_crc(u8 *base, off_t start_off, off_t end_off) | |
1171 | { | |
1172 | u32 crc = 0; | |
1173 | u8 *ptr = base + start_off; | |
1174 | u8 *last_val = base + end_off - 1; | |
1175 | ||
1176 | if (end_off < start_off) | |
1177 | return -EINVAL; | |
1178 | ||
1179 | while (ptr < last_val) { | |
1180 | mxt_calc_crc24(&crc, *ptr, *(ptr + 1)); | |
1181 | ptr += 2; | |
1182 | } | |
1183 | ||
1184 | /* if len is odd, fill the last byte with 0 */ | |
1185 | if (ptr == last_val) | |
1186 | mxt_calc_crc24(&crc, *ptr, 0); | |
1187 | ||
1188 | /* Mask to 24-bit */ | |
1189 | crc &= 0x00FFFFFF; | |
1190 | ||
1191 | return crc; | |
1192 | } | |
1193 | ||
efdbd7ae DT |
1194 | static int mxt_prepare_cfg_mem(struct mxt_data *data, |
1195 | const struct firmware *cfg, | |
1196 | unsigned int data_pos, | |
1197 | unsigned int cfg_start_ofs, | |
1198 | u8 *config_mem, | |
1199 | size_t config_mem_size) | |
1200 | { | |
1201 | struct device *dev = &data->client->dev; | |
1202 | struct mxt_object *object; | |
1203 | unsigned int type, instance, size, byte_offset; | |
1204 | int offset; | |
1205 | int ret; | |
1206 | int i; | |
1207 | u16 reg; | |
1208 | u8 val; | |
1209 | ||
1210 | while (data_pos < cfg->size) { | |
1211 | /* Read type, instance, length */ | |
1212 | ret = sscanf(cfg->data + data_pos, "%x %x %x%n", | |
1213 | &type, &instance, &size, &offset); | |
1214 | if (ret == 0) { | |
1215 | /* EOF */ | |
1216 | break; | |
1217 | } else if (ret != 3) { | |
1218 | dev_err(dev, "Bad format: failed to parse object\n"); | |
1219 | return -EINVAL; | |
1220 | } | |
1221 | data_pos += offset; | |
1222 | ||
1223 | object = mxt_get_object(data, type); | |
1224 | if (!object) { | |
1225 | /* Skip object */ | |
1226 | for (i = 0; i < size; i++) { | |
1227 | ret = sscanf(cfg->data + data_pos, "%hhx%n", | |
041fa159 DT |
1228 | &val, &offset); |
1229 | if (ret != 1) { | |
1230 | dev_err(dev, "Bad format in T%d at %d\n", | |
1231 | type, i); | |
1232 | return -EINVAL; | |
1233 | } | |
efdbd7ae DT |
1234 | data_pos += offset; |
1235 | } | |
1236 | continue; | |
1237 | } | |
1238 | ||
1239 | if (size > mxt_obj_size(object)) { | |
1240 | /* | |
1241 | * Either we are in fallback mode due to wrong | |
1242 | * config or config from a later fw version, | |
1243 | * or the file is corrupt or hand-edited. | |
1244 | */ | |
1245 | dev_warn(dev, "Discarding %zu byte(s) in T%u\n", | |
1246 | size - mxt_obj_size(object), type); | |
1247 | } else if (mxt_obj_size(object) > size) { | |
1248 | /* | |
1249 | * If firmware is upgraded, new bytes may be added to | |
1250 | * end of objects. It is generally forward compatible | |
1251 | * to zero these bytes - previous behaviour will be | |
1252 | * retained. However this does invalidate the CRC and | |
1253 | * will force fallback mode until the configuration is | |
1254 | * updated. We warn here but do nothing else - the | |
1255 | * malloc has zeroed the entire configuration. | |
1256 | */ | |
1257 | dev_warn(dev, "Zeroing %zu byte(s) in T%d\n", | |
1258 | mxt_obj_size(object) - size, type); | |
1259 | } | |
1260 | ||
1261 | if (instance >= mxt_obj_instances(object)) { | |
1262 | dev_err(dev, "Object instances exceeded!\n"); | |
1263 | return -EINVAL; | |
1264 | } | |
1265 | ||
1266 | reg = object->start_address + mxt_obj_size(object) * instance; | |
1267 | ||
1268 | for (i = 0; i < size; i++) { | |
1269 | ret = sscanf(cfg->data + data_pos, "%hhx%n", | |
1270 | &val, | |
1271 | &offset); | |
1272 | if (ret != 1) { | |
041fa159 DT |
1273 | dev_err(dev, "Bad format in T%d at %d\n", |
1274 | type, i); | |
efdbd7ae DT |
1275 | return -EINVAL; |
1276 | } | |
1277 | data_pos += offset; | |
1278 | ||
1279 | if (i > mxt_obj_size(object)) | |
1280 | continue; | |
1281 | ||
1282 | byte_offset = reg + i - cfg_start_ofs; | |
1283 | ||
041fa159 | 1284 | if (byte_offset >= 0 && byte_offset < config_mem_size) { |
efdbd7ae DT |
1285 | *(config_mem + byte_offset) = val; |
1286 | } else { | |
1287 | dev_err(dev, "Bad object: reg:%d, T%d, ofs=%d\n", | |
1288 | reg, object->type, byte_offset); | |
1289 | return -EINVAL; | |
1290 | } | |
1291 | } | |
1292 | } | |
1293 | ||
1294 | return 0; | |
1295 | } | |
1296 | ||
1297 | static int mxt_upload_cfg_mem(struct mxt_data *data, unsigned int cfg_start, | |
1298 | u8 *config_mem, size_t config_mem_size) | |
1299 | { | |
1300 | unsigned int byte_offset = 0; | |
1301 | int error; | |
1302 | ||
1303 | /* Write configuration as blocks */ | |
1304 | while (byte_offset < config_mem_size) { | |
1305 | unsigned int size = config_mem_size - byte_offset; | |
1306 | ||
1307 | if (size > MXT_MAX_BLOCK_WRITE) | |
1308 | size = MXT_MAX_BLOCK_WRITE; | |
1309 | ||
1310 | error = __mxt_write_reg(data->client, | |
1311 | cfg_start + byte_offset, | |
1312 | size, config_mem + byte_offset); | |
1313 | if (error) { | |
1314 | dev_err(&data->client->dev, | |
1315 | "Config write error, ret=%d\n", error); | |
1316 | return error; | |
1317 | } | |
1318 | ||
1319 | byte_offset += size; | |
1320 | } | |
1321 | ||
1322 | return 0; | |
1323 | } | |
1324 | ||
7f3884f7 ND |
1325 | static int mxt_init_t7_power_cfg(struct mxt_data *data); |
1326 | ||
50a77c65 ND |
1327 | /* |
1328 | * mxt_update_cfg - download configuration to chip | |
1329 | * | |
1330 | * Atmel Raw Config File Format | |
1331 | * | |
1332 | * The first four lines of the raw config file contain: | |
1333 | * 1) Version | |
1334 | * 2) Chip ID Information (first 7 bytes of device memory) | |
1335 | * 3) Chip Information Block 24-bit CRC Checksum | |
1336 | * 4) Chip Configuration 24-bit CRC Checksum | |
1337 | * | |
1338 | * The rest of the file consists of one line per object instance: | |
1339 | * <TYPE> <INSTANCE> <SIZE> <CONTENTS> | |
1340 | * | |
1341 | * <TYPE> - 2-byte object type as hex | |
1342 | * <INSTANCE> - 2-byte object instance number as hex | |
1343 | * <SIZE> - 2-byte object size as hex | |
1344 | * <CONTENTS> - array of <SIZE> 1-byte hex values | |
1345 | */ | |
1346 | static int mxt_update_cfg(struct mxt_data *data, const struct firmware *cfg) | |
4cf51c38 | 1347 | { |
4cf51c38 | 1348 | struct device *dev = &data->client->dev; |
50a77c65 | 1349 | struct mxt_info cfg_info; |
cf94bc09 | 1350 | int ret; |
50a77c65 | 1351 | int offset; |
4ce6fa01 | 1352 | int data_pos; |
50a77c65 | 1353 | int i; |
4ce6fa01 ND |
1354 | int cfg_start_ofs; |
1355 | u32 info_crc, config_crc, calculated_crc; | |
1356 | u8 *config_mem; | |
1357 | size_t config_mem_size; | |
4cf51c38 | 1358 | |
50a77c65 ND |
1359 | mxt_update_crc(data, MXT_COMMAND_REPORTALL, 1); |
1360 | ||
1361 | if (strncmp(cfg->data, MXT_CFG_MAGIC, strlen(MXT_CFG_MAGIC))) { | |
1362 | dev_err(dev, "Unrecognised config file\n"); | |
efdbd7ae | 1363 | return -EINVAL; |
4cf51c38 JS |
1364 | } |
1365 | ||
4ce6fa01 | 1366 | data_pos = strlen(MXT_CFG_MAGIC); |
50a77c65 ND |
1367 | |
1368 | /* Load information block and check */ | |
1369 | for (i = 0; i < sizeof(struct mxt_info); i++) { | |
4ce6fa01 | 1370 | ret = sscanf(cfg->data + data_pos, "%hhx%n", |
50a77c65 ND |
1371 | (unsigned char *)&cfg_info + i, |
1372 | &offset); | |
1373 | if (ret != 1) { | |
1374 | dev_err(dev, "Bad format\n"); | |
efdbd7ae | 1375 | return -EINVAL; |
50a77c65 | 1376 | } |
c3f78043 | 1377 | |
4ce6fa01 | 1378 | data_pos += offset; |
c3f78043 ND |
1379 | } |
1380 | ||
50a77c65 ND |
1381 | if (cfg_info.family_id != data->info.family_id) { |
1382 | dev_err(dev, "Family ID mismatch!\n"); | |
efdbd7ae | 1383 | return -EINVAL; |
50a77c65 | 1384 | } |
c3f78043 | 1385 | |
50a77c65 ND |
1386 | if (cfg_info.variant_id != data->info.variant_id) { |
1387 | dev_err(dev, "Variant ID mismatch!\n"); | |
efdbd7ae | 1388 | return -EINVAL; |
50a77c65 | 1389 | } |
4cf51c38 | 1390 | |
4ce6fa01 ND |
1391 | /* Read CRCs */ |
1392 | ret = sscanf(cfg->data + data_pos, "%x%n", &info_crc, &offset); | |
50a77c65 ND |
1393 | if (ret != 1) { |
1394 | dev_err(dev, "Bad format: failed to parse Info CRC\n"); | |
efdbd7ae | 1395 | return -EINVAL; |
50a77c65 | 1396 | } |
4ce6fa01 | 1397 | data_pos += offset; |
50a77c65 | 1398 | |
4ce6fa01 | 1399 | ret = sscanf(cfg->data + data_pos, "%x%n", &config_crc, &offset); |
50a77c65 ND |
1400 | if (ret != 1) { |
1401 | dev_err(dev, "Bad format: failed to parse Config CRC\n"); | |
efdbd7ae | 1402 | return -EINVAL; |
50a77c65 | 1403 | } |
4ce6fa01 | 1404 | data_pos += offset; |
50a77c65 | 1405 | |
4ce6fa01 ND |
1406 | /* |
1407 | * The Info Block CRC is calculated over mxt_info and the object | |
1408 | * table. If it does not match then we are trying to load the | |
1409 | * configuration from a different chip or firmware version, so | |
1410 | * the configuration CRC is invalid anyway. | |
1411 | */ | |
1412 | if (info_crc == data->info_crc) { | |
1413 | if (config_crc == 0 || data->config_crc == 0) { | |
1414 | dev_info(dev, "CRC zero, attempting to apply config\n"); | |
1415 | } else if (config_crc == data->config_crc) { | |
1416 | dev_dbg(dev, "Config CRC 0x%06X: OK\n", | |
1417 | data->config_crc); | |
efdbd7ae | 1418 | return 0; |
4ce6fa01 ND |
1419 | } else { |
1420 | dev_info(dev, "Config CRC 0x%06X: does not match file 0x%06X\n", | |
1421 | data->config_crc, config_crc); | |
1422 | } | |
1423 | } else { | |
1424 | dev_warn(dev, | |
1425 | "Warning: Info CRC error - device=0x%06X file=0x%06X\n", | |
1426 | data->info_crc, info_crc); | |
50a77c65 ND |
1427 | } |
1428 | ||
4ce6fa01 ND |
1429 | /* Malloc memory to store configuration */ |
1430 | cfg_start_ofs = MXT_OBJECT_START + | |
1431 | data->info.object_num * sizeof(struct mxt_object) + | |
1432 | MXT_INFO_CHECKSUM_SIZE; | |
1433 | config_mem_size = data->mem_size - cfg_start_ofs; | |
1434 | config_mem = kzalloc(config_mem_size, GFP_KERNEL); | |
1435 | if (!config_mem) { | |
1436 | dev_err(dev, "Failed to allocate memory\n"); | |
efdbd7ae | 1437 | return -ENOMEM; |
4ce6fa01 | 1438 | } |
50a77c65 | 1439 | |
efdbd7ae DT |
1440 | ret = mxt_prepare_cfg_mem(data, cfg, data_pos, cfg_start_ofs, |
1441 | config_mem, config_mem_size); | |
1442 | if (ret) | |
1443 | goto release_mem; | |
50a77c65 | 1444 | |
4ce6fa01 ND |
1445 | /* Calculate crc of the received configs (not the raw config file) */ |
1446 | if (data->T7_address < cfg_start_ofs) { | |
1447 | dev_err(dev, "Bad T7 address, T7addr = %x, config offset %x\n", | |
1448 | data->T7_address, cfg_start_ofs); | |
1449 | ret = 0; | |
1450 | goto release_mem; | |
1451 | } | |
50a77c65 | 1452 | |
4ce6fa01 ND |
1453 | calculated_crc = mxt_calculate_crc(config_mem, |
1454 | data->T7_address - cfg_start_ofs, | |
1455 | config_mem_size); | |
1456 | ||
efdbd7ae | 1457 | if (config_crc > 0 && config_crc != calculated_crc) |
4ce6fa01 ND |
1458 | dev_warn(dev, "Config CRC error, calculated=%06X, file=%06X\n", |
1459 | calculated_crc, config_crc); | |
1460 | ||
efdbd7ae DT |
1461 | ret = mxt_upload_cfg_mem(data, cfg_start_ofs, |
1462 | config_mem, config_mem_size); | |
1463 | if (ret) | |
1464 | goto release_mem; | |
4cf51c38 | 1465 | |
c3f78043 ND |
1466 | mxt_update_crc(data, MXT_COMMAND_BACKUPNV, MXT_BACKUP_VALUE); |
1467 | ||
1468 | ret = mxt_soft_reset(data); | |
1469 | if (ret) | |
4ce6fa01 | 1470 | goto release_mem; |
c3f78043 ND |
1471 | |
1472 | dev_info(dev, "Config successfully updated\n"); | |
1473 | ||
7f3884f7 ND |
1474 | /* T7 config may have changed */ |
1475 | mxt_init_t7_power_cfg(data); | |
1476 | ||
4ce6fa01 ND |
1477 | release_mem: |
1478 | kfree(config_mem); | |
50a77c65 | 1479 | return ret; |
4cf51c38 JS |
1480 | } |
1481 | ||
7686b108 | 1482 | static int mxt_get_info(struct mxt_data *data) |
4cf51c38 JS |
1483 | { |
1484 | struct i2c_client *client = data->client; | |
7686b108 | 1485 | struct mxt_info *info = &data->info; |
4cf51c38 | 1486 | int error; |
4cf51c38 | 1487 | |
23003a84 | 1488 | /* Read 7-byte info block starting at address 0 */ |
146c6a66 | 1489 | error = __mxt_read_reg(client, 0, sizeof(*info), info); |
4cf51c38 JS |
1490 | if (error) |
1491 | return error; | |
4cf51c38 JS |
1492 | |
1493 | return 0; | |
1494 | } | |
1495 | ||
58e4aeee | 1496 | static void mxt_free_input_device(struct mxt_data *data) |
5f3f9bc2 | 1497 | { |
58e4aeee SW |
1498 | if (data->input_dev) { |
1499 | input_unregister_device(data->input_dev); | |
1500 | data->input_dev = NULL; | |
1501 | } | |
1502 | } | |
5f3f9bc2 | 1503 | |
58e4aeee SW |
1504 | static void mxt_free_object_table(struct mxt_data *data) |
1505 | { | |
5f3f9bc2 ND |
1506 | kfree(data->object_table); |
1507 | data->object_table = NULL; | |
1508 | kfree(data->msg_buf); | |
1509 | data->msg_buf = NULL; | |
b9b05a89 | 1510 | data->T5_address = 0; |
5f3f9bc2 ND |
1511 | data->T5_msg_size = 0; |
1512 | data->T6_reportid = 0; | |
1513 | data->T7_address = 0; | |
1514 | data->T9_reportid_min = 0; | |
1515 | data->T9_reportid_max = 0; | |
1516 | data->T19_reportid = 0; | |
9d8dc3e5 | 1517 | data->T44_address = 0; |
b23157dc ND |
1518 | data->T100_reportid_min = 0; |
1519 | data->T100_reportid_max = 0; | |
9d8dc3e5 | 1520 | data->max_reportid = 0; |
5f3f9bc2 ND |
1521 | } |
1522 | ||
7686b108 | 1523 | static int mxt_get_object_table(struct mxt_data *data) |
4cf51c38 | 1524 | { |
333e5a9a DK |
1525 | struct i2c_client *client = data->client; |
1526 | size_t table_size; | |
dd24dcf5 | 1527 | struct mxt_object *object_table; |
4cf51c38 JS |
1528 | int error; |
1529 | int i; | |
333e5a9a | 1530 | u8 reportid; |
4ce6fa01 | 1531 | u16 end_address; |
333e5a9a DK |
1532 | |
1533 | table_size = data->info.object_num * sizeof(struct mxt_object); | |
dd24dcf5 ND |
1534 | object_table = kzalloc(table_size, GFP_KERNEL); |
1535 | if (!object_table) { | |
1536 | dev_err(&data->client->dev, "Failed to allocate memory\n"); | |
1537 | return -ENOMEM; | |
1538 | } | |
1539 | ||
333e5a9a | 1540 | error = __mxt_read_reg(client, MXT_OBJECT_START, table_size, |
dd24dcf5 ND |
1541 | object_table); |
1542 | if (error) { | |
1543 | kfree(object_table); | |
333e5a9a | 1544 | return error; |
dd24dcf5 | 1545 | } |
4cf51c38 | 1546 | |
333e5a9a DK |
1547 | /* Valid Report IDs start counting from 1 */ |
1548 | reportid = 1; | |
4ce6fa01 | 1549 | data->mem_size = 0; |
4cf51c38 | 1550 | for (i = 0; i < data->info.object_num; i++) { |
dd24dcf5 | 1551 | struct mxt_object *object = object_table + i; |
333e5a9a | 1552 | u8 min_id, max_id; |
4cf51c38 | 1553 | |
333e5a9a | 1554 | le16_to_cpus(&object->start_address); |
4cf51c38 JS |
1555 | |
1556 | if (object->num_report_ids) { | |
333e5a9a | 1557 | min_id = reportid; |
4cf51c38 | 1558 | reportid += object->num_report_ids * |
1e0c0c5b | 1559 | mxt_obj_instances(object); |
333e5a9a DK |
1560 | max_id = reportid - 1; |
1561 | } else { | |
1562 | min_id = 0; | |
1563 | max_id = 0; | |
1564 | } | |
1565 | ||
1566 | dev_dbg(&data->client->dev, | |
7bed6805 | 1567 | "T%u Start:%u Size:%zu Instances:%zu Report IDs:%u-%u\n", |
1e0c0c5b DK |
1568 | object->type, object->start_address, |
1569 | mxt_obj_size(object), mxt_obj_instances(object), | |
1570 | min_id, max_id); | |
333e5a9a DK |
1571 | |
1572 | switch (object->type) { | |
5f3f9bc2 | 1573 | case MXT_GEN_MESSAGE_T5: |
437d4f37 ND |
1574 | if (data->info.family_id == 0x80 && |
1575 | data->info.version < 0x20) { | |
9d8dc3e5 | 1576 | /* |
437d4f37 ND |
1577 | * On mXT224 firmware versions prior to V2.0 |
1578 | * read and discard unused CRC byte otherwise | |
1579 | * DMA reads are misaligned. | |
9d8dc3e5 ND |
1580 | */ |
1581 | data->T5_msg_size = mxt_obj_size(object); | |
1582 | } else { | |
1583 | /* CRC not enabled, so skip last byte */ | |
1584 | data->T5_msg_size = mxt_obj_size(object) - 1; | |
1585 | } | |
b9b05a89 | 1586 | data->T5_address = object->start_address; |
041fa159 | 1587 | break; |
fdf80421 DK |
1588 | case MXT_GEN_COMMAND_T6: |
1589 | data->T6_reportid = min_id; | |
a4a2ef46 | 1590 | data->T6_address = object->start_address; |
fdf80421 | 1591 | break; |
4ce6fa01 ND |
1592 | case MXT_GEN_POWER_T7: |
1593 | data->T7_address = object->start_address; | |
1594 | break; | |
333e5a9a | 1595 | case MXT_TOUCH_MULTI_T9: |
b23157dc | 1596 | data->multitouch = MXT_TOUCH_MULTI_T9; |
333e5a9a DK |
1597 | data->T9_reportid_min = min_id; |
1598 | data->T9_reportid_max = max_id; | |
9d8dc3e5 ND |
1599 | data->num_touchids = object->num_report_ids |
1600 | * mxt_obj_instances(object); | |
1601 | break; | |
1602 | case MXT_SPT_MESSAGECOUNT_T44: | |
1603 | data->T44_address = object->start_address; | |
333e5a9a | 1604 | break; |
22dfab7f DK |
1605 | case MXT_SPT_GPIOPWM_T19: |
1606 | data->T19_reportid = min_id; | |
1607 | break; | |
b23157dc ND |
1608 | case MXT_TOUCH_MULTITOUCHSCREEN_T100: |
1609 | data->multitouch = MXT_TOUCH_MULTITOUCHSCREEN_T100; | |
1610 | data->T100_reportid_min = min_id; | |
1611 | data->T100_reportid_max = max_id; | |
1612 | /* first two report IDs reserved */ | |
1613 | data->num_touchids = object->num_report_ids - 2; | |
1614 | break; | |
4cf51c38 | 1615 | } |
4ce6fa01 ND |
1616 | |
1617 | end_address = object->start_address | |
1618 | + mxt_obj_size(object) * mxt_obj_instances(object) - 1; | |
1619 | ||
1620 | if (end_address >= data->mem_size) | |
1621 | data->mem_size = end_address + 1; | |
4cf51c38 JS |
1622 | } |
1623 | ||
9d8dc3e5 ND |
1624 | /* Store maximum reportid */ |
1625 | data->max_reportid = reportid; | |
1626 | ||
1627 | /* If T44 exists, T5 position has to be directly after */ | |
1628 | if (data->T44_address && (data->T5_address != data->T44_address + 1)) { | |
1629 | dev_err(&client->dev, "Invalid T44 position\n"); | |
1630 | error = -EINVAL; | |
1631 | goto free_object_table; | |
1632 | } | |
1633 | ||
1634 | data->msg_buf = kcalloc(data->max_reportid, | |
1635 | data->T5_msg_size, GFP_KERNEL); | |
5f3f9bc2 ND |
1636 | if (!data->msg_buf) { |
1637 | dev_err(&client->dev, "Failed to allocate message buffer\n"); | |
1638 | error = -ENOMEM; | |
1639 | goto free_object_table; | |
1640 | } | |
1641 | ||
dd24dcf5 ND |
1642 | data->object_table = object_table; |
1643 | ||
4cf51c38 | 1644 | return 0; |
4cf51c38 | 1645 | |
5f3f9bc2 ND |
1646 | free_object_table: |
1647 | mxt_free_object_table(data); | |
1648 | return error; | |
7d4fa100 DK |
1649 | } |
1650 | ||
61dc1aba ND |
1651 | static int mxt_read_t9_resolution(struct mxt_data *data) |
1652 | { | |
1653 | struct i2c_client *client = data->client; | |
1654 | int error; | |
1655 | struct t9_range range; | |
1656 | unsigned char orient; | |
1657 | struct mxt_object *object; | |
1658 | ||
1659 | object = mxt_get_object(data, MXT_TOUCH_MULTI_T9); | |
1660 | if (!object) | |
1661 | return -EINVAL; | |
1662 | ||
1663 | error = __mxt_read_reg(client, | |
1664 | object->start_address + MXT_T9_RANGE, | |
1665 | sizeof(range), &range); | |
1666 | if (error) | |
1667 | return error; | |
1668 | ||
1c0276d5 ND |
1669 | data->max_x = get_unaligned_le16(&range.x); |
1670 | data->max_y = get_unaligned_le16(&range.y); | |
61dc1aba ND |
1671 | |
1672 | error = __mxt_read_reg(client, | |
1673 | object->start_address + MXT_T9_ORIENT, | |
1674 | 1, &orient); | |
1675 | if (error) | |
1676 | return error; | |
1677 | ||
1c0276d5 | 1678 | data->xy_switch = orient & MXT_T9_ORIENT_SWITCH; |
61dc1aba ND |
1679 | |
1680 | return 0; | |
1681 | } | |
1682 | ||
b23157dc ND |
1683 | static int mxt_read_t100_config(struct mxt_data *data) |
1684 | { | |
1685 | struct i2c_client *client = data->client; | |
1686 | int error; | |
1687 | struct mxt_object *object; | |
1688 | u16 range_x, range_y; | |
1689 | u8 cfg, tchaux; | |
1690 | u8 aux; | |
1691 | ||
1692 | object = mxt_get_object(data, MXT_TOUCH_MULTITOUCHSCREEN_T100); | |
1693 | if (!object) | |
1694 | return -EINVAL; | |
1695 | ||
1c0276d5 | 1696 | /* read touchscreen dimensions */ |
b23157dc ND |
1697 | error = __mxt_read_reg(client, |
1698 | object->start_address + MXT_T100_XRANGE, | |
1699 | sizeof(range_x), &range_x); | |
1700 | if (error) | |
1701 | return error; | |
1702 | ||
1c0276d5 | 1703 | data->max_x = get_unaligned_le16(&range_x); |
b23157dc ND |
1704 | |
1705 | error = __mxt_read_reg(client, | |
1706 | object->start_address + MXT_T100_YRANGE, | |
1707 | sizeof(range_y), &range_y); | |
1708 | if (error) | |
1709 | return error; | |
1710 | ||
1c0276d5 | 1711 | data->max_y = get_unaligned_le16(&range_y); |
b23157dc | 1712 | |
1c0276d5 | 1713 | /* read orientation config */ |
b23157dc ND |
1714 | error = __mxt_read_reg(client, |
1715 | object->start_address + MXT_T100_CFG1, | |
1716 | 1, &cfg); | |
1717 | if (error) | |
1718 | return error; | |
1719 | ||
1c0276d5 ND |
1720 | data->xy_switch = cfg & MXT_T100_CFG_SWITCHXY; |
1721 | ||
1722 | /* allocate aux bytes */ | |
b23157dc ND |
1723 | error = __mxt_read_reg(client, |
1724 | object->start_address + MXT_T100_TCHAUX, | |
1725 | 1, &tchaux); | |
1726 | if (error) | |
1727 | return error; | |
1728 | ||
b23157dc ND |
1729 | aux = 6; |
1730 | ||
1731 | if (tchaux & MXT_T100_TCHAUX_VECT) | |
1732 | data->t100_aux_vect = aux++; | |
1733 | ||
1734 | if (tchaux & MXT_T100_TCHAUX_AMPL) | |
1735 | data->t100_aux_ampl = aux++; | |
1736 | ||
1737 | if (tchaux & MXT_T100_TCHAUX_AREA) | |
1738 | data->t100_aux_area = aux++; | |
1739 | ||
1740 | dev_dbg(&client->dev, | |
1741 | "T100 aux mappings vect:%u ampl:%u area:%u\n", | |
1742 | data->t100_aux_vect, data->t100_aux_ampl, data->t100_aux_area); | |
1743 | ||
b23157dc ND |
1744 | return 0; |
1745 | } | |
1746 | ||
7a53d609 ND |
1747 | static int mxt_input_open(struct input_dev *dev); |
1748 | static void mxt_input_close(struct input_dev *dev); | |
1749 | ||
b6d2d328 SS |
1750 | static void mxt_set_up_as_touchpad(struct input_dev *input_dev, |
1751 | struct mxt_data *data) | |
1752 | { | |
1753 | const struct mxt_platform_data *pdata = data->pdata; | |
1754 | int i; | |
1755 | ||
1756 | input_dev->name = "Atmel maXTouch Touchpad"; | |
1757 | ||
1758 | __set_bit(INPUT_PROP_BUTTONPAD, input_dev->propbit); | |
1759 | ||
1760 | input_abs_set_res(input_dev, ABS_X, MXT_PIXELS_PER_MM); | |
1761 | input_abs_set_res(input_dev, ABS_Y, MXT_PIXELS_PER_MM); | |
1762 | input_abs_set_res(input_dev, ABS_MT_POSITION_X, | |
1763 | MXT_PIXELS_PER_MM); | |
1764 | input_abs_set_res(input_dev, ABS_MT_POSITION_Y, | |
1765 | MXT_PIXELS_PER_MM); | |
1766 | ||
1767 | for (i = 0; i < pdata->t19_num_keys; i++) | |
1768 | if (pdata->t19_keymap[i] != KEY_RESERVED) | |
1769 | input_set_capability(input_dev, EV_KEY, | |
1770 | pdata->t19_keymap[i]); | |
1771 | } | |
1772 | ||
b23157dc | 1773 | static int mxt_initialize_input_device(struct mxt_data *data) |
7a53d609 | 1774 | { |
7a53d609 | 1775 | const struct mxt_platform_data *pdata = data->pdata; |
b6d2d328 | 1776 | struct device *dev = &data->client->dev; |
7a53d609 ND |
1777 | struct input_dev *input_dev; |
1778 | int error; | |
1779 | unsigned int num_mt_slots; | |
1780 | unsigned int mt_flags = 0; | |
7a53d609 | 1781 | |
b23157dc ND |
1782 | switch (data->multitouch) { |
1783 | case MXT_TOUCH_MULTI_T9: | |
1784 | num_mt_slots = data->T9_reportid_max - data->T9_reportid_min + 1; | |
1785 | error = mxt_read_t9_resolution(data); | |
1786 | if (error) | |
1787 | dev_warn(dev, "Failed to initialize T9 resolution\n"); | |
1788 | break; | |
1789 | ||
1790 | case MXT_TOUCH_MULTITOUCHSCREEN_T100: | |
1791 | num_mt_slots = data->num_touchids; | |
1792 | error = mxt_read_t100_config(data); | |
1793 | if (error) | |
1794 | dev_warn(dev, "Failed to read T100 config\n"); | |
1795 | break; | |
1796 | ||
1797 | default: | |
1798 | dev_err(dev, "Invalid multitouch object\n"); | |
1799 | return -EINVAL; | |
1800 | } | |
7a53d609 | 1801 | |
1c0276d5 ND |
1802 | /* Handle default values and orientation switch */ |
1803 | if (data->max_x == 0) | |
1804 | data->max_x = 1023; | |
1805 | ||
1806 | if (data->max_y == 0) | |
1807 | data->max_y = 1023; | |
1808 | ||
1809 | if (data->xy_switch) | |
1810 | swap(data->max_x, data->max_y); | |
1811 | ||
1812 | dev_info(dev, "Touchscreen size X%uY%u\n", data->max_x, data->max_y); | |
1813 | ||
1814 | /* Register input device */ | |
7a53d609 ND |
1815 | input_dev = input_allocate_device(); |
1816 | if (!input_dev) { | |
1817 | dev_err(dev, "Failed to allocate memory\n"); | |
1818 | return -ENOMEM; | |
1819 | } | |
1820 | ||
1821 | input_dev->name = "Atmel maXTouch Touchscreen"; | |
1822 | input_dev->phys = data->phys; | |
1823 | input_dev->id.bustype = BUS_I2C; | |
1824 | input_dev->dev.parent = dev; | |
1825 | input_dev->open = mxt_input_open; | |
1826 | input_dev->close = mxt_input_close; | |
1827 | ||
b23157dc | 1828 | input_set_capability(input_dev, EV_KEY, BTN_TOUCH); |
7a53d609 | 1829 | |
7a53d609 | 1830 | /* For single touch */ |
b23157dc ND |
1831 | input_set_abs_params(input_dev, ABS_X, 0, data->max_x, 0, 0); |
1832 | input_set_abs_params(input_dev, ABS_Y, 0, data->max_y, 0, 0); | |
1833 | ||
1834 | if (data->multitouch == MXT_TOUCH_MULTI_T9 || | |
1835 | (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 && | |
1836 | data->t100_aux_ampl)) { | |
1837 | input_set_abs_params(input_dev, ABS_PRESSURE, 0, 255, 0, 0); | |
1838 | } | |
7a53d609 | 1839 | |
b6d2d328 SS |
1840 | /* If device has buttons we assume it is a touchpad */ |
1841 | if (pdata->t19_num_keys) { | |
1842 | mxt_set_up_as_touchpad(input_dev, data); | |
1843 | mt_flags |= INPUT_MT_POINTER; | |
eafc0c87 ND |
1844 | } else { |
1845 | mt_flags |= INPUT_MT_DIRECT; | |
b6d2d328 SS |
1846 | } |
1847 | ||
7a53d609 | 1848 | /* For multi touch */ |
7a53d609 ND |
1849 | error = input_mt_init_slots(input_dev, num_mt_slots, mt_flags); |
1850 | if (error) { | |
1851 | dev_err(dev, "Error %d initialising slots\n", error); | |
1852 | goto err_free_mem; | |
1853 | } | |
1854 | ||
b23157dc ND |
1855 | if (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100) { |
1856 | input_set_abs_params(input_dev, ABS_MT_TOOL_TYPE, | |
1857 | 0, MT_TOOL_MAX, 0, 0); | |
1858 | input_set_abs_params(input_dev, ABS_MT_DISTANCE, | |
1859 | MXT_DISTANCE_ACTIVE_TOUCH, | |
1860 | MXT_DISTANCE_HOVERING, | |
1861 | 0, 0); | |
1862 | } | |
1863 | ||
7a53d609 ND |
1864 | input_set_abs_params(input_dev, ABS_MT_POSITION_X, |
1865 | 0, data->max_x, 0, 0); | |
1866 | input_set_abs_params(input_dev, ABS_MT_POSITION_Y, | |
1867 | 0, data->max_y, 0, 0); | |
b23157dc ND |
1868 | |
1869 | if (data->multitouch == MXT_TOUCH_MULTI_T9 || | |
1870 | (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 && | |
1871 | data->t100_aux_area)) { | |
1872 | input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR, | |
1873 | 0, MXT_MAX_AREA, 0, 0); | |
1874 | } | |
1875 | ||
1876 | if (data->multitouch == MXT_TOUCH_MULTI_T9 || | |
1877 | (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 && | |
1878 | data->t100_aux_ampl)) { | |
1879 | input_set_abs_params(input_dev, ABS_MT_PRESSURE, | |
1880 | 0, 255, 0, 0); | |
1881 | } | |
1882 | ||
1883 | if (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 && | |
1884 | data->t100_aux_vect) { | |
1885 | input_set_abs_params(input_dev, ABS_MT_ORIENTATION, | |
1886 | 0, 255, 0, 0); | |
1887 | } | |
1888 | ||
1889 | if (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 && | |
1890 | data->t100_aux_ampl) { | |
1891 | input_set_abs_params(input_dev, ABS_MT_PRESSURE, | |
1892 | 0, 255, 0, 0); | |
1893 | } | |
1894 | ||
1895 | if (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 && | |
1896 | data->t100_aux_vect) { | |
1897 | input_set_abs_params(input_dev, ABS_MT_ORIENTATION, | |
1898 | 0, 255, 0, 0); | |
1899 | } | |
7a53d609 ND |
1900 | |
1901 | input_set_drvdata(input_dev, data); | |
1902 | ||
1903 | error = input_register_device(input_dev); | |
1904 | if (error) { | |
1905 | dev_err(dev, "Error %d registering input device\n", error); | |
1906 | goto err_free_mem; | |
1907 | } | |
1908 | ||
1909 | data->input_dev = input_dev; | |
1910 | ||
1911 | return 0; | |
1912 | ||
1913 | err_free_mem: | |
1914 | input_free_device(input_dev); | |
1915 | return error; | |
1916 | } | |
1917 | ||
50a77c65 ND |
1918 | static int mxt_configure_objects(struct mxt_data *data, |
1919 | const struct firmware *cfg); | |
1920 | ||
1921 | static void mxt_config_cb(const struct firmware *cfg, void *ctx) | |
1922 | { | |
1923 | mxt_configure_objects(ctx, cfg); | |
efdbd7ae | 1924 | release_firmware(cfg); |
50a77c65 ND |
1925 | } |
1926 | ||
7686b108 | 1927 | static int mxt_initialize(struct mxt_data *data) |
4cf51c38 JS |
1928 | { |
1929 | struct i2c_client *client = data->client; | |
6cd1ab0f | 1930 | int recovery_attempts = 0; |
4cf51c38 | 1931 | int error; |
4cf51c38 | 1932 | |
6cd1ab0f DT |
1933 | while (1) { |
1934 | error = mxt_get_info(data); | |
1935 | if (!error) | |
1936 | break; | |
1937 | ||
1938 | /* Check bootloader state */ | |
1939 | error = mxt_probe_bootloader(data, false); | |
8efaa5e5 | 1940 | if (error) { |
6cd1ab0f DT |
1941 | dev_info(&client->dev, "Trying alternate bootloader address\n"); |
1942 | error = mxt_probe_bootloader(data, true); | |
1943 | if (error) { | |
8efaa5e5 ND |
1944 | /* Chip is not in appmode or bootloader mode */ |
1945 | return error; | |
1946 | } | |
6cd1ab0f | 1947 | } |
a9fdd1e6 | 1948 | |
6cd1ab0f DT |
1949 | /* OK, we are in bootloader, see if we can recover */ |
1950 | if (++recovery_attempts > 1) { | |
1951 | dev_err(&client->dev, "Could not recover from bootloader mode\n"); | |
1952 | /* | |
1953 | * We can reflash from this state, so do not | |
1954 | * abort initialization. | |
1955 | */ | |
1956 | data->in_bootloader = true; | |
1957 | return 0; | |
8efaa5e5 | 1958 | } |
6cd1ab0f DT |
1959 | |
1960 | /* Attempt to exit bootloader into app mode */ | |
1961 | mxt_send_bootloader_cmd(data, false); | |
1962 | msleep(MXT_FW_RESET_TIME); | |
a9fdd1e6 | 1963 | } |
4cf51c38 | 1964 | |
4cf51c38 | 1965 | /* Get object table information */ |
7686b108 | 1966 | error = mxt_get_object_table(data); |
7bed6805 ND |
1967 | if (error) { |
1968 | dev_err(&client->dev, "Error %d reading object table\n", error); | |
dd24dcf5 | 1969 | return error; |
7bed6805 | 1970 | } |
4cf51c38 | 1971 | |
041fa159 | 1972 | error = mxt_acquire_irq(data); |
dd24dcf5 ND |
1973 | if (error) |
1974 | goto err_free_object_table; | |
1975 | ||
6cd1ab0f DT |
1976 | error = request_firmware_nowait(THIS_MODULE, true, MXT_CFG_NAME, |
1977 | &client->dev, GFP_KERNEL, data, | |
1978 | mxt_config_cb); | |
1979 | if (error) { | |
1980 | dev_err(&client->dev, "Failed to invoke firmware loader: %d\n", | |
1981 | error); | |
1982 | goto err_free_object_table; | |
1983 | } | |
50a77c65 ND |
1984 | |
1985 | return 0; | |
1986 | ||
1987 | err_free_object_table: | |
1988 | mxt_free_object_table(data); | |
1989 | return error; | |
1990 | } | |
1991 | ||
7f3884f7 ND |
1992 | static int mxt_set_t7_power_cfg(struct mxt_data *data, u8 sleep) |
1993 | { | |
1994 | struct device *dev = &data->client->dev; | |
1995 | int error; | |
1996 | struct t7_config *new_config; | |
1997 | struct t7_config deepsleep = { .active = 0, .idle = 0 }; | |
1998 | ||
1999 | if (sleep == MXT_POWER_CFG_DEEPSLEEP) | |
2000 | new_config = &deepsleep; | |
2001 | else | |
2002 | new_config = &data->t7_cfg; | |
2003 | ||
2004 | error = __mxt_write_reg(data->client, data->T7_address, | |
2005 | sizeof(data->t7_cfg), new_config); | |
2006 | if (error) | |
2007 | return error; | |
2008 | ||
2009 | dev_dbg(dev, "Set T7 ACTV:%d IDLE:%d\n", | |
2010 | new_config->active, new_config->idle); | |
2011 | ||
2012 | return 0; | |
2013 | } | |
2014 | ||
2015 | static int mxt_init_t7_power_cfg(struct mxt_data *data) | |
2016 | { | |
2017 | struct device *dev = &data->client->dev; | |
2018 | int error; | |
2019 | bool retry = false; | |
2020 | ||
2021 | recheck: | |
2022 | error = __mxt_read_reg(data->client, data->T7_address, | |
2023 | sizeof(data->t7_cfg), &data->t7_cfg); | |
2024 | if (error) | |
2025 | return error; | |
2026 | ||
2027 | if (data->t7_cfg.active == 0 || data->t7_cfg.idle == 0) { | |
2028 | if (!retry) { | |
2029 | dev_dbg(dev, "T7 cfg zero, resetting\n"); | |
2030 | mxt_soft_reset(data); | |
2031 | retry = true; | |
2032 | goto recheck; | |
2033 | } else { | |
2034 | dev_dbg(dev, "T7 cfg zero after reset, overriding\n"); | |
2035 | data->t7_cfg.active = 20; | |
2036 | data->t7_cfg.idle = 100; | |
2037 | return mxt_set_t7_power_cfg(data, MXT_POWER_CFG_RUN); | |
2038 | } | |
2039 | } | |
2040 | ||
2041 | dev_dbg(dev, "Initialized power cfg: ACTV %d, IDLE %d\n", | |
2042 | data->t7_cfg.active, data->t7_cfg.idle); | |
2043 | return 0; | |
2044 | } | |
2045 | ||
50a77c65 ND |
2046 | static int mxt_configure_objects(struct mxt_data *data, |
2047 | const struct firmware *cfg) | |
2048 | { | |
2049 | struct device *dev = &data->client->dev; | |
2050 | struct mxt_info *info = &data->info; | |
2051 | int error; | |
2052 | ||
7f3884f7 ND |
2053 | error = mxt_init_t7_power_cfg(data); |
2054 | if (error) { | |
2055 | dev_err(dev, "Failed to initialize power cfg\n"); | |
2056 | return error; | |
2057 | } | |
2058 | ||
50a77c65 ND |
2059 | if (cfg) { |
2060 | error = mxt_update_cfg(data, cfg); | |
2061 | if (error) | |
2062 | dev_warn(dev, "Error %d updating config\n", error); | |
7bed6805 | 2063 | } |
4cf51c38 | 2064 | |
b23157dc ND |
2065 | if (data->multitouch) { |
2066 | error = mxt_initialize_input_device(data); | |
2067 | if (error) | |
2068 | return error; | |
2069 | } else { | |
2070 | dev_warn(dev, "No touch object detected\n"); | |
2071 | } | |
4cf51c38 | 2072 | |
50a77c65 | 2073 | dev_info(dev, |
61dc1aba ND |
2074 | "Family: %u Variant: %u Firmware V%u.%u.%02X Objects: %u\n", |
2075 | info->family_id, info->variant_id, info->version >> 4, | |
2076 | info->version & 0xf, info->build, info->object_num); | |
4cf51c38 JS |
2077 | |
2078 | return 0; | |
2079 | } | |
2080 | ||
b19fc9ec DK |
2081 | /* Firmware Version is returned as Major.Minor.Build */ |
2082 | static ssize_t mxt_fw_version_show(struct device *dev, | |
2083 | struct device_attribute *attr, char *buf) | |
2084 | { | |
2085 | struct mxt_data *data = dev_get_drvdata(dev); | |
2086 | struct mxt_info *info = &data->info; | |
2087 | return scnprintf(buf, PAGE_SIZE, "%u.%u.%02X\n", | |
2088 | info->version >> 4, info->version & 0xf, info->build); | |
2089 | } | |
2090 | ||
2091 | /* Hardware Version is returned as FamilyID.VariantID */ | |
2092 | static ssize_t mxt_hw_version_show(struct device *dev, | |
2093 | struct device_attribute *attr, char *buf) | |
2094 | { | |
2095 | struct mxt_data *data = dev_get_drvdata(dev); | |
2096 | struct mxt_info *info = &data->info; | |
2097 | return scnprintf(buf, PAGE_SIZE, "%u.%u\n", | |
2098 | info->family_id, info->variant_id); | |
2099 | } | |
2100 | ||
794eb67e DK |
2101 | static ssize_t mxt_show_instance(char *buf, int count, |
2102 | struct mxt_object *object, int instance, | |
2103 | const u8 *val) | |
2104 | { | |
2105 | int i; | |
2106 | ||
1e0c0c5b | 2107 | if (mxt_obj_instances(object) > 1) |
794eb67e DK |
2108 | count += scnprintf(buf + count, PAGE_SIZE - count, |
2109 | "Instance %u\n", instance); | |
2110 | ||
1e0c0c5b | 2111 | for (i = 0; i < mxt_obj_size(object); i++) |
794eb67e DK |
2112 | count += scnprintf(buf + count, PAGE_SIZE - count, |
2113 | "\t[%2u]: %02x (%d)\n", i, val[i], val[i]); | |
2114 | count += scnprintf(buf + count, PAGE_SIZE - count, "\n"); | |
2115 | ||
2116 | return count; | |
2117 | } | |
2118 | ||
7686b108 | 2119 | static ssize_t mxt_object_show(struct device *dev, |
4cf51c38 JS |
2120 | struct device_attribute *attr, char *buf) |
2121 | { | |
7686b108 IV |
2122 | struct mxt_data *data = dev_get_drvdata(dev); |
2123 | struct mxt_object *object; | |
4cf51c38 JS |
2124 | int count = 0; |
2125 | int i, j; | |
2126 | int error; | |
43a91d51 | 2127 | u8 *obuf; |
4cf51c38 | 2128 | |
43a91d51 DK |
2129 | /* Pre-allocate buffer large enough to hold max sized object. */ |
2130 | obuf = kmalloc(256, GFP_KERNEL); | |
2131 | if (!obuf) | |
2132 | return -ENOMEM; | |
4cf51c38 | 2133 | |
43a91d51 | 2134 | error = 0; |
4cf51c38 JS |
2135 | for (i = 0; i < data->info.object_num; i++) { |
2136 | object = data->object_table + i; | |
2137 | ||
91630955 | 2138 | if (!mxt_object_readable(object->type)) |
4cf51c38 | 2139 | continue; |
4cf51c38 | 2140 | |
91630955 DK |
2141 | count += scnprintf(buf + count, PAGE_SIZE - count, |
2142 | "T%u:\n", object->type); | |
4cf51c38 | 2143 | |
1e0c0c5b DK |
2144 | for (j = 0; j < mxt_obj_instances(object); j++) { |
2145 | u16 size = mxt_obj_size(object); | |
794eb67e | 2146 | u16 addr = object->start_address + j * size; |
43a91d51 | 2147 | |
794eb67e | 2148 | error = __mxt_read_reg(data->client, addr, size, obuf); |
4cf51c38 | 2149 | if (error) |
794eb67e | 2150 | goto done; |
4cf51c38 | 2151 | |
794eb67e | 2152 | count = mxt_show_instance(buf, count, object, j, obuf); |
4cf51c38 | 2153 | } |
4cf51c38 JS |
2154 | } |
2155 | ||
794eb67e | 2156 | done: |
43a91d51 DK |
2157 | kfree(obuf); |
2158 | return error ?: count; | |
4cf51c38 JS |
2159 | } |
2160 | ||
f2ac6cb9 ND |
2161 | static int mxt_check_firmware_format(struct device *dev, |
2162 | const struct firmware *fw) | |
2163 | { | |
2164 | unsigned int pos = 0; | |
2165 | char c; | |
2166 | ||
2167 | while (pos < fw->size) { | |
2168 | c = *(fw->data + pos); | |
2169 | ||
2170 | if (c < '0' || (c > '9' && c < 'A') || c > 'F') | |
2171 | return 0; | |
2172 | ||
2173 | pos++; | |
2174 | } | |
2175 | ||
2176 | /* | |
2177 | * To convert file try: | |
2178 | * xxd -r -p mXTXXX__APP_VX-X-XX.enc > maxtouch.fw | |
2179 | */ | |
2180 | dev_err(dev, "Aborting: firmware file must be in binary format\n"); | |
2181 | ||
2182 | return -EINVAL; | |
2183 | } | |
2184 | ||
7686b108 | 2185 | static int mxt_load_fw(struct device *dev, const char *fn) |
4cf51c38 | 2186 | { |
7686b108 | 2187 | struct mxt_data *data = dev_get_drvdata(dev); |
4cf51c38 JS |
2188 | const struct firmware *fw = NULL; |
2189 | unsigned int frame_size; | |
2190 | unsigned int pos = 0; | |
f943c74a | 2191 | unsigned int retry = 0; |
f477c758 | 2192 | unsigned int frame = 0; |
4cf51c38 JS |
2193 | int ret; |
2194 | ||
2195 | ret = request_firmware(&fw, fn, dev); | |
2196 | if (ret) { | |
2197 | dev_err(dev, "Unable to open firmware %s\n", fn); | |
2198 | return ret; | |
2199 | } | |
2200 | ||
f2ac6cb9 ND |
2201 | /* Check for incorrect enc file */ |
2202 | ret = mxt_check_firmware_format(dev, fw); | |
2203 | if (ret) | |
2204 | goto release_firmware; | |
2205 | ||
a9fdd1e6 ND |
2206 | if (!data->in_bootloader) { |
2207 | /* Change to the bootloader mode */ | |
2208 | data->in_bootloader = true; | |
d79e7e47 | 2209 | |
a9fdd1e6 ND |
2210 | ret = mxt_t6_command(data, MXT_COMMAND_RESET, |
2211 | MXT_BOOT_VALUE, false); | |
2212 | if (ret) | |
2213 | goto release_firmware; | |
a4a2ef46 | 2214 | |
a9fdd1e6 | 2215 | msleep(MXT_RESET_TIME); |
8efaa5e5 ND |
2216 | |
2217 | /* Do not need to scan since we know family ID */ | |
2218 | ret = mxt_lookup_bootloader_address(data, 0); | |
2219 | if (ret) | |
2220 | goto release_firmware; | |
58e4aeee SW |
2221 | |
2222 | mxt_free_input_device(data); | |
2223 | mxt_free_object_table(data); | |
8efaa5e5 ND |
2224 | } else { |
2225 | enable_irq(data->irq); | |
a9fdd1e6 | 2226 | } |
4cf51c38 | 2227 | |
d79e7e47 BL |
2228 | reinit_completion(&data->bl_completion); |
2229 | ||
385deb96 ND |
2230 | ret = mxt_check_bootloader(data, MXT_WAITING_BOOTLOAD_CMD, false); |
2231 | if (ret) { | |
2232 | /* Bootloader may still be unlocked from previous attempt */ | |
2233 | ret = mxt_check_bootloader(data, MXT_WAITING_FRAME_DATA, false); | |
2234 | if (ret) | |
2235 | goto disable_irq; | |
2236 | } else { | |
2237 | dev_info(dev, "Unlocking bootloader\n"); | |
4cf51c38 | 2238 | |
385deb96 | 2239 | /* Unlock bootloader */ |
8efaa5e5 | 2240 | ret = mxt_send_bootloader_cmd(data, true); |
385deb96 ND |
2241 | if (ret) |
2242 | goto disable_irq; | |
2243 | } | |
4cf51c38 JS |
2244 | |
2245 | while (pos < fw->size) { | |
385deb96 | 2246 | ret = mxt_check_bootloader(data, MXT_WAITING_FRAME_DATA, true); |
4cf51c38 | 2247 | if (ret) |
d79e7e47 | 2248 | goto disable_irq; |
4cf51c38 JS |
2249 | |
2250 | frame_size = ((*(fw->data + pos) << 8) | *(fw->data + pos + 1)); | |
2251 | ||
f943c74a | 2252 | /* Take account of CRC bytes */ |
4cf51c38 JS |
2253 | frame_size += 2; |
2254 | ||
2255 | /* Write one frame to device */ | |
f28a842d ND |
2256 | ret = mxt_bootloader_write(data, fw->data + pos, frame_size); |
2257 | if (ret) | |
2258 | goto disable_irq; | |
4cf51c38 | 2259 | |
385deb96 | 2260 | ret = mxt_check_bootloader(data, MXT_FRAME_CRC_PASS, true); |
f943c74a ND |
2261 | if (ret) { |
2262 | retry++; | |
2263 | ||
2264 | /* Back off by 20ms per retry */ | |
2265 | msleep(retry * 20); | |
4cf51c38 | 2266 | |
f943c74a ND |
2267 | if (retry > 20) { |
2268 | dev_err(dev, "Retry count exceeded\n"); | |
2269 | goto disable_irq; | |
2270 | } | |
2271 | } else { | |
2272 | retry = 0; | |
2273 | pos += frame_size; | |
f477c758 | 2274 | frame++; |
f943c74a | 2275 | } |
4cf51c38 | 2276 | |
f477c758 ND |
2277 | if (frame % 50 == 0) |
2278 | dev_dbg(dev, "Sent %d frames, %d/%zd bytes\n", | |
2279 | frame, pos, fw->size); | |
4cf51c38 JS |
2280 | } |
2281 | ||
a0434b75 | 2282 | /* Wait for flash. */ |
a4a2ef46 IV |
2283 | ret = mxt_wait_for_completion(data, &data->bl_completion, |
2284 | MXT_FW_RESET_TIME); | |
a0434b75 BL |
2285 | if (ret) |
2286 | goto disable_irq; | |
2287 | ||
f477c758 ND |
2288 | dev_dbg(dev, "Sent %d frames, %d bytes\n", frame, pos); |
2289 | ||
a0434b75 BL |
2290 | /* |
2291 | * Wait for device to reset. Some bootloader versions do not assert | |
2292 | * the CHG line after bootloading has finished, so ignore potential | |
2293 | * errors. | |
2294 | */ | |
a4a2ef46 | 2295 | mxt_wait_for_completion(data, &data->bl_completion, MXT_FW_RESET_TIME); |
a0434b75 | 2296 | |
d79e7e47 BL |
2297 | data->in_bootloader = false; |
2298 | ||
2299 | disable_irq: | |
2300 | disable_irq(data->irq); | |
a4a2ef46 | 2301 | release_firmware: |
4cf51c38 | 2302 | release_firmware(fw); |
4cf51c38 JS |
2303 | return ret; |
2304 | } | |
2305 | ||
7686b108 | 2306 | static ssize_t mxt_update_fw_store(struct device *dev, |
4cf51c38 JS |
2307 | struct device_attribute *attr, |
2308 | const char *buf, size_t count) | |
2309 | { | |
7686b108 | 2310 | struct mxt_data *data = dev_get_drvdata(dev); |
4cf51c38 JS |
2311 | int error; |
2312 | ||
7686b108 | 2313 | error = mxt_load_fw(dev, MXT_FW_NAME); |
4cf51c38 JS |
2314 | if (error) { |
2315 | dev_err(dev, "The firmware update failed(%d)\n", error); | |
2316 | count = error; | |
2317 | } else { | |
7bed6805 ND |
2318 | dev_info(dev, "The firmware update succeeded\n"); |
2319 | ||
dd24dcf5 | 2320 | error = mxt_initialize(data); |
d79e7e47 BL |
2321 | if (error) |
2322 | return error; | |
2323 | } | |
08960a07 | 2324 | |
4cf51c38 JS |
2325 | return count; |
2326 | } | |
2327 | ||
b19fc9ec DK |
2328 | static DEVICE_ATTR(fw_version, S_IRUGO, mxt_fw_version_show, NULL); |
2329 | static DEVICE_ATTR(hw_version, S_IRUGO, mxt_hw_version_show, NULL); | |
71b3e938 DK |
2330 | static DEVICE_ATTR(object, S_IRUGO, mxt_object_show, NULL); |
2331 | static DEVICE_ATTR(update_fw, S_IWUSR, NULL, mxt_update_fw_store); | |
4cf51c38 | 2332 | |
7686b108 | 2333 | static struct attribute *mxt_attrs[] = { |
b19fc9ec DK |
2334 | &dev_attr_fw_version.attr, |
2335 | &dev_attr_hw_version.attr, | |
4cf51c38 JS |
2336 | &dev_attr_object.attr, |
2337 | &dev_attr_update_fw.attr, | |
2338 | NULL | |
2339 | }; | |
2340 | ||
7686b108 IV |
2341 | static const struct attribute_group mxt_attr_group = { |
2342 | .attrs = mxt_attrs, | |
4cf51c38 JS |
2343 | }; |
2344 | ||
7686b108 | 2345 | static void mxt_start(struct mxt_data *data) |
4cf51c38 | 2346 | { |
7f3884f7 ND |
2347 | switch (data->pdata->suspend_mode) { |
2348 | case MXT_SUSPEND_T9_CTRL: | |
2349 | mxt_soft_reset(data); | |
2350 | ||
2351 | /* Touch enable */ | |
2352 | /* 0x83 = SCANEN | RPTEN | ENABLE */ | |
2353 | mxt_write_object(data, | |
2354 | MXT_TOUCH_MULTI_T9, MXT_T9_CTRL, 0x83); | |
2355 | break; | |
2356 | ||
2357 | case MXT_SUSPEND_DEEP_SLEEP: | |
2358 | default: | |
2359 | mxt_set_t7_power_cfg(data, MXT_POWER_CFG_RUN); | |
2360 | ||
2361 | /* Recalibrate since chip has been in deep sleep */ | |
2362 | mxt_t6_command(data, MXT_COMMAND_CALIBRATE, 1, false); | |
2363 | break; | |
2364 | } | |
2365 | ||
4cf51c38 JS |
2366 | } |
2367 | ||
7686b108 | 2368 | static void mxt_stop(struct mxt_data *data) |
4cf51c38 | 2369 | { |
7f3884f7 ND |
2370 | switch (data->pdata->suspend_mode) { |
2371 | case MXT_SUSPEND_T9_CTRL: | |
2372 | /* Touch disable */ | |
2373 | mxt_write_object(data, | |
2374 | MXT_TOUCH_MULTI_T9, MXT_T9_CTRL, 0); | |
2375 | break; | |
2376 | ||
2377 | case MXT_SUSPEND_DEEP_SLEEP: | |
2378 | default: | |
2379 | mxt_set_t7_power_cfg(data, MXT_POWER_CFG_DEEPSLEEP); | |
2380 | break; | |
2381 | } | |
4cf51c38 JS |
2382 | } |
2383 | ||
7686b108 | 2384 | static int mxt_input_open(struct input_dev *dev) |
4cf51c38 | 2385 | { |
7686b108 | 2386 | struct mxt_data *data = input_get_drvdata(dev); |
4cf51c38 | 2387 | |
7686b108 | 2388 | mxt_start(data); |
4cf51c38 JS |
2389 | |
2390 | return 0; | |
2391 | } | |
2392 | ||
7686b108 | 2393 | static void mxt_input_close(struct input_dev *dev) |
4cf51c38 | 2394 | { |
7686b108 | 2395 | struct mxt_data *data = input_get_drvdata(dev); |
4cf51c38 | 2396 | |
7686b108 | 2397 | mxt_stop(data); |
4cf51c38 JS |
2398 | } |
2399 | ||
78188be3 | 2400 | #ifdef CONFIG_OF |
4f8d8088 | 2401 | static const struct mxt_platform_data *mxt_parse_dt(struct i2c_client *client) |
78188be3 SW |
2402 | { |
2403 | struct mxt_platform_data *pdata; | |
20447664 | 2404 | struct device_node *np = client->dev.of_node; |
78188be3 | 2405 | u32 *keymap; |
20447664 | 2406 | int proplen, ret; |
78188be3 | 2407 | |
20447664 | 2408 | if (!np) |
4f8d8088 | 2409 | return ERR_PTR(-ENOENT); |
78188be3 SW |
2410 | |
2411 | pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL); | |
2412 | if (!pdata) | |
2413 | return ERR_PTR(-ENOMEM); | |
2414 | ||
20447664 | 2415 | if (of_find_property(np, "linux,gpio-keymap", &proplen)) { |
78188be3 SW |
2416 | pdata->t19_num_keys = proplen / sizeof(u32); |
2417 | ||
2418 | keymap = devm_kzalloc(&client->dev, | |
2419 | pdata->t19_num_keys * sizeof(keymap[0]), | |
2420 | GFP_KERNEL); | |
2421 | if (!keymap) | |
2422 | return ERR_PTR(-ENOMEM); | |
2423 | ||
20447664 ND |
2424 | ret = of_property_read_u32_array(np, "linux,gpio-keymap", |
2425 | keymap, pdata->t19_num_keys); | |
2426 | if (ret) | |
2427 | dev_warn(&client->dev, | |
2428 | "Couldn't read linux,gpio-keymap: %d\n", ret); | |
78188be3 SW |
2429 | |
2430 | pdata->t19_keymap = keymap; | |
2431 | } | |
2432 | ||
7f3884f7 ND |
2433 | pdata->suspend_mode = MXT_SUSPEND_DEEP_SLEEP; |
2434 | ||
78188be3 SW |
2435 | return pdata; |
2436 | } | |
2437 | #else | |
4f8d8088 | 2438 | static const struct mxt_platform_data *mxt_parse_dt(struct i2c_client *client) |
78188be3 | 2439 | { |
4f8d8088 DT |
2440 | return ERR_PTR(-ENOENT); |
2441 | } | |
2442 | #endif | |
2443 | ||
2444 | #ifdef CONFIG_ACPI | |
2445 | ||
2446 | struct mxt_acpi_platform_data { | |
2447 | const char *hid; | |
2448 | struct mxt_platform_data pdata; | |
2449 | }; | |
2450 | ||
2451 | static unsigned int samus_touchpad_buttons[] = { | |
2452 | KEY_RESERVED, | |
2453 | KEY_RESERVED, | |
2454 | KEY_RESERVED, | |
2455 | BTN_LEFT | |
2456 | }; | |
2457 | ||
2458 | static struct mxt_acpi_platform_data samus_platform_data[] = { | |
2459 | { | |
2460 | /* Touchpad */ | |
2461 | .hid = "ATML0000", | |
2462 | .pdata = { | |
2463 | .t19_num_keys = ARRAY_SIZE(samus_touchpad_buttons), | |
2464 | .t19_keymap = samus_touchpad_buttons, | |
2465 | }, | |
2466 | }, | |
2467 | { | |
2468 | /* Touchscreen */ | |
2469 | .hid = "ATML0001", | |
2470 | }, | |
2471 | { } | |
2472 | }; | |
2473 | ||
c67566c6 DT |
2474 | static unsigned int chromebook_tp_buttons[] = { |
2475 | KEY_RESERVED, | |
2476 | KEY_RESERVED, | |
2477 | KEY_RESERVED, | |
2478 | KEY_RESERVED, | |
2479 | KEY_RESERVED, | |
2480 | BTN_LEFT | |
2481 | }; | |
2482 | ||
2483 | static struct mxt_acpi_platform_data chromebook_platform_data[] = { | |
2484 | { | |
2485 | /* Touchpad */ | |
2486 | .hid = "ATML0000", | |
2487 | .pdata = { | |
2488 | .t19_num_keys = ARRAY_SIZE(chromebook_tp_buttons), | |
2489 | .t19_keymap = chromebook_tp_buttons, | |
2490 | }, | |
2491 | }, | |
2492 | { | |
2493 | /* Touchscreen */ | |
2494 | .hid = "ATML0001", | |
2495 | }, | |
2496 | { } | |
2497 | }; | |
2498 | ||
4f8d8088 DT |
2499 | static const struct dmi_system_id mxt_dmi_table[] = { |
2500 | { | |
2501 | /* 2015 Google Pixel */ | |
2502 | .ident = "Chromebook Pixel 2", | |
2503 | .matches = { | |
2504 | DMI_MATCH(DMI_SYS_VENDOR, "GOOGLE"), | |
2505 | DMI_MATCH(DMI_PRODUCT_NAME, "Samus"), | |
2506 | }, | |
2507 | .driver_data = samus_platform_data, | |
2508 | }, | |
c67566c6 DT |
2509 | { |
2510 | /* Other Google Chromebooks */ | |
2511 | .ident = "Chromebook", | |
2512 | .matches = { | |
2513 | DMI_MATCH(DMI_SYS_VENDOR, "GOOGLE"), | |
2514 | }, | |
2515 | .driver_data = chromebook_platform_data, | |
2516 | }, | |
4f8d8088 DT |
2517 | { } |
2518 | }; | |
2519 | ||
2520 | static const struct mxt_platform_data *mxt_parse_acpi(struct i2c_client *client) | |
2521 | { | |
2522 | struct acpi_device *adev; | |
2523 | const struct dmi_system_id *system_id; | |
2524 | const struct mxt_acpi_platform_data *acpi_pdata; | |
2525 | ||
2526 | /* | |
2527 | * Ignore ACPI devices representing bootloader mode. | |
2528 | * | |
2529 | * This is a bit of a hack: Google Chromebook BIOS creates ACPI | |
2530 | * devices for both application and bootloader modes, but we are | |
2531 | * interested in application mode only (if device is in bootloader | |
2532 | * mode we'll end up switching into application anyway). So far | |
2533 | * application mode addresses were all above 0x40, so we'll use it | |
2534 | * as a threshold. | |
2535 | */ | |
2536 | if (client->addr < 0x40) | |
2537 | return ERR_PTR(-ENXIO); | |
2538 | ||
2539 | adev = ACPI_COMPANION(&client->dev); | |
2540 | if (!adev) | |
2541 | return ERR_PTR(-ENOENT); | |
2542 | ||
2543 | system_id = dmi_first_match(mxt_dmi_table); | |
2544 | if (!system_id) | |
2545 | return ERR_PTR(-ENOENT); | |
2546 | ||
2547 | acpi_pdata = system_id->driver_data; | |
2548 | if (!acpi_pdata) | |
2549 | return ERR_PTR(-ENOENT); | |
2550 | ||
2551 | while (acpi_pdata->hid) { | |
2552 | if (!strcmp(acpi_device_hid(adev), acpi_pdata->hid)) | |
2553 | return &acpi_pdata->pdata; | |
2554 | ||
2555 | acpi_pdata++; | |
2556 | } | |
2557 | ||
2558 | return ERR_PTR(-ENOENT); | |
2559 | } | |
2560 | #else | |
2561 | static const struct mxt_platform_data *mxt_parse_acpi(struct i2c_client *client) | |
2562 | { | |
2563 | return ERR_PTR(-ENOENT); | |
78188be3 SW |
2564 | } |
2565 | #endif | |
2566 | ||
4f8d8088 DT |
2567 | static const struct mxt_platform_data * |
2568 | mxt_get_platform_data(struct i2c_client *client) | |
2569 | { | |
2570 | const struct mxt_platform_data *pdata; | |
2571 | ||
2572 | pdata = dev_get_platdata(&client->dev); | |
2573 | if (pdata) | |
2574 | return pdata; | |
2575 | ||
2576 | pdata = mxt_parse_dt(client); | |
2577 | if (!IS_ERR(pdata) || PTR_ERR(pdata) != -ENOENT) | |
2578 | return pdata; | |
2579 | ||
2580 | pdata = mxt_parse_acpi(client); | |
2581 | if (!IS_ERR(pdata) || PTR_ERR(pdata) != -ENOENT) | |
2582 | return pdata; | |
2583 | ||
2584 | dev_err(&client->dev, "No platform data specified\n"); | |
2585 | return ERR_PTR(-EINVAL); | |
2586 | } | |
2587 | ||
78188be3 | 2588 | static int mxt_probe(struct i2c_client *client, const struct i2c_device_id *id) |
4cf51c38 | 2589 | { |
7686b108 | 2590 | struct mxt_data *data; |
78188be3 | 2591 | const struct mxt_platform_data *pdata; |
4cf51c38 JS |
2592 | int error; |
2593 | ||
4f8d8088 DT |
2594 | pdata = mxt_get_platform_data(client); |
2595 | if (IS_ERR(pdata)) | |
2596 | return PTR_ERR(pdata); | |
4cf51c38 | 2597 | |
7686b108 | 2598 | data = kzalloc(sizeof(struct mxt_data), GFP_KERNEL); |
7a53d609 | 2599 | if (!data) { |
4cf51c38 | 2600 | dev_err(&client->dev, "Failed to allocate memory\n"); |
7a53d609 | 2601 | return -ENOMEM; |
4cf51c38 JS |
2602 | } |
2603 | ||
ec02ac2b DK |
2604 | snprintf(data->phys, sizeof(data->phys), "i2c-%u-%04x/input0", |
2605 | client->adapter->nr, client->addr); | |
22dfab7f | 2606 | |
910d8051 | 2607 | data->client = client; |
910d8051 JS |
2608 | data->pdata = pdata; |
2609 | data->irq = client->irq; | |
7a53d609 | 2610 | i2c_set_clientdata(client, data); |
910d8051 | 2611 | |
d79e7e47 | 2612 | init_completion(&data->bl_completion); |
a4a2ef46 | 2613 | init_completion(&data->reset_completion); |
c3f78043 | 2614 | init_completion(&data->crc_completion); |
d79e7e47 | 2615 | |
dd24dcf5 ND |
2616 | error = request_threaded_irq(client->irq, NULL, mxt_interrupt, |
2617 | pdata->irqflags | IRQF_ONESHOT, | |
2618 | client->name, data); | |
2619 | if (error) { | |
2620 | dev_err(&client->dev, "Failed to register interrupt\n"); | |
2621 | goto err_free_mem; | |
2622 | } | |
2623 | ||
2624 | disable_irq(client->irq); | |
2625 | ||
cb159115 DK |
2626 | error = mxt_initialize(data); |
2627 | if (error) | |
7a53d609 | 2628 | goto err_free_irq; |
4cf51c38 | 2629 | |
7686b108 | 2630 | error = sysfs_create_group(&client->dev.kobj, &mxt_attr_group); |
7bed6805 ND |
2631 | if (error) { |
2632 | dev_err(&client->dev, "Failure %d creating sysfs group\n", | |
2633 | error); | |
7a53d609 | 2634 | goto err_free_object; |
7bed6805 | 2635 | } |
4cf51c38 JS |
2636 | |
2637 | return 0; | |
2638 | ||
4cf51c38 | 2639 | err_free_object: |
58e4aeee | 2640 | mxt_free_input_device(data); |
5f3f9bc2 | 2641 | mxt_free_object_table(data); |
dd24dcf5 ND |
2642 | err_free_irq: |
2643 | free_irq(client->irq, data); | |
4cf51c38 | 2644 | err_free_mem: |
4cf51c38 JS |
2645 | kfree(data); |
2646 | return error; | |
2647 | } | |
2648 | ||
e2619cf7 | 2649 | static int mxt_remove(struct i2c_client *client) |
4cf51c38 | 2650 | { |
7686b108 | 2651 | struct mxt_data *data = i2c_get_clientdata(client); |
4cf51c38 | 2652 | |
7686b108 | 2653 | sysfs_remove_group(&client->dev.kobj, &mxt_attr_group); |
4cf51c38 | 2654 | free_irq(data->irq, data); |
58e4aeee | 2655 | mxt_free_input_device(data); |
5f3f9bc2 | 2656 | mxt_free_object_table(data); |
4cf51c38 JS |
2657 | kfree(data); |
2658 | ||
2659 | return 0; | |
2660 | } | |
2661 | ||
02b6a58b | 2662 | static int __maybe_unused mxt_suspend(struct device *dev) |
4cf51c38 | 2663 | { |
8b5fce06 | 2664 | struct i2c_client *client = to_i2c_client(dev); |
7686b108 | 2665 | struct mxt_data *data = i2c_get_clientdata(client); |
4cf51c38 JS |
2666 | struct input_dev *input_dev = data->input_dev; |
2667 | ||
50fabb02 PX |
2668 | if (!input_dev) |
2669 | return 0; | |
2670 | ||
4cf51c38 JS |
2671 | mutex_lock(&input_dev->mutex); |
2672 | ||
2673 | if (input_dev->users) | |
7686b108 | 2674 | mxt_stop(data); |
4cf51c38 JS |
2675 | |
2676 | mutex_unlock(&input_dev->mutex); | |
2677 | ||
2678 | return 0; | |
2679 | } | |
2680 | ||
02b6a58b | 2681 | static int __maybe_unused mxt_resume(struct device *dev) |
4cf51c38 | 2682 | { |
8b5fce06 | 2683 | struct i2c_client *client = to_i2c_client(dev); |
7686b108 | 2684 | struct mxt_data *data = i2c_get_clientdata(client); |
4cf51c38 JS |
2685 | struct input_dev *input_dev = data->input_dev; |
2686 | ||
50fabb02 PX |
2687 | if (!input_dev) |
2688 | return 0; | |
2689 | ||
4cf51c38 JS |
2690 | mutex_lock(&input_dev->mutex); |
2691 | ||
2692 | if (input_dev->users) | |
7686b108 | 2693 | mxt_start(data); |
4cf51c38 JS |
2694 | |
2695 | mutex_unlock(&input_dev->mutex); | |
2696 | ||
2697 | return 0; | |
2698 | } | |
4cf51c38 | 2699 | |
3a73c816 DK |
2700 | static SIMPLE_DEV_PM_OPS(mxt_pm_ops, mxt_suspend, mxt_resume); |
2701 | ||
78188be3 SW |
2702 | static const struct of_device_id mxt_of_match[] = { |
2703 | { .compatible = "atmel,maxtouch", }, | |
2704 | {}, | |
2705 | }; | |
2706 | MODULE_DEVICE_TABLE(of, mxt_of_match); | |
2707 | ||
4f8d8088 DT |
2708 | #ifdef CONFIG_ACPI |
2709 | static const struct acpi_device_id mxt_acpi_id[] = { | |
2710 | { "ATML0000", 0 }, /* Touchpad */ | |
2711 | { "ATML0001", 0 }, /* Touchscreen */ | |
2712 | { } | |
2713 | }; | |
2714 | MODULE_DEVICE_TABLE(acpi, mxt_acpi_id); | |
2715 | #endif | |
2716 | ||
7686b108 | 2717 | static const struct i2c_device_id mxt_id[] = { |
4cf51c38 | 2718 | { "qt602240_ts", 0 }, |
7686b108 | 2719 | { "atmel_mxt_ts", 0 }, |
22dfab7f | 2720 | { "atmel_mxt_tp", 0 }, |
b7d21058 | 2721 | { "maxtouch", 0 }, |
46ee2a05 | 2722 | { "mXT224", 0 }, |
4cf51c38 JS |
2723 | { } |
2724 | }; | |
7686b108 | 2725 | MODULE_DEVICE_TABLE(i2c, mxt_id); |
4cf51c38 | 2726 | |
7686b108 | 2727 | static struct i2c_driver mxt_driver = { |
4cf51c38 | 2728 | .driver = { |
7686b108 | 2729 | .name = "atmel_mxt_ts", |
78188be3 | 2730 | .of_match_table = of_match_ptr(mxt_of_match), |
4f8d8088 | 2731 | .acpi_match_table = ACPI_PTR(mxt_acpi_id), |
7686b108 | 2732 | .pm = &mxt_pm_ops, |
4cf51c38 | 2733 | }, |
7686b108 | 2734 | .probe = mxt_probe, |
1cb0aa88 | 2735 | .remove = mxt_remove, |
7686b108 | 2736 | .id_table = mxt_id, |
4cf51c38 JS |
2737 | }; |
2738 | ||
1b92c1cf | 2739 | module_i2c_driver(mxt_driver); |
4cf51c38 JS |
2740 | |
2741 | /* Module information */ | |
2742 | MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>"); | |
7686b108 | 2743 | MODULE_DESCRIPTION("Atmel maXTouch Touchscreen driver"); |
4cf51c38 | 2744 | MODULE_LICENSE("GPL"); |