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> | |
964de521 | 25 | #include <linux/i2c/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 JS |
31 | |
32 | /* Version */ | |
7686b108 IV |
33 | #define MXT_VER_20 20 |
34 | #define MXT_VER_21 21 | |
35 | #define MXT_VER_22 22 | |
4cf51c38 | 36 | |
50a77c65 | 37 | /* Firmware files */ |
7686b108 | 38 | #define MXT_FW_NAME "maxtouch.fw" |
50a77c65 ND |
39 | #define MXT_CFG_NAME "maxtouch.cfg" |
40 | #define MXT_CFG_MAGIC "OBP_RAW V1" | |
4cf51c38 JS |
41 | |
42 | /* Registers */ | |
23003a84 | 43 | #define MXT_INFO 0x00 |
7686b108 IV |
44 | #define MXT_FAMILY_ID 0x00 |
45 | #define MXT_VARIANT_ID 0x01 | |
46 | #define MXT_VERSION 0x02 | |
47 | #define MXT_BUILD 0x03 | |
48 | #define MXT_MATRIX_X_SIZE 0x04 | |
49 | #define MXT_MATRIX_Y_SIZE 0x05 | |
50 | #define MXT_OBJECT_NUM 0x06 | |
51 | #define MXT_OBJECT_START 0x07 | |
4cf51c38 | 52 | |
7686b108 | 53 | #define MXT_OBJECT_SIZE 6 |
4ce6fa01 ND |
54 | #define MXT_INFO_CHECKSUM_SIZE 3 |
55 | #define MXT_MAX_BLOCK_WRITE 256 | |
4cf51c38 JS |
56 | |
57 | /* Object types */ | |
81c88a71 IV |
58 | #define MXT_DEBUG_DIAGNOSTIC_T37 37 |
59 | #define MXT_GEN_MESSAGE_T5 5 | |
60 | #define MXT_GEN_COMMAND_T6 6 | |
61 | #define MXT_GEN_POWER_T7 7 | |
62 | #define MXT_GEN_ACQUIRE_T8 8 | |
63 | #define MXT_GEN_DATASOURCE_T53 53 | |
64 | #define MXT_TOUCH_MULTI_T9 9 | |
65 | #define MXT_TOUCH_KEYARRAY_T15 15 | |
66 | #define MXT_TOUCH_PROXIMITY_T23 23 | |
67 | #define MXT_TOUCH_PROXKEY_T52 52 | |
68 | #define MXT_PROCI_GRIPFACE_T20 20 | |
69 | #define MXT_PROCG_NOISE_T22 22 | |
70 | #define MXT_PROCI_ONETOUCH_T24 24 | |
71 | #define MXT_PROCI_TWOTOUCH_T27 27 | |
72 | #define MXT_PROCI_GRIP_T40 40 | |
73 | #define MXT_PROCI_PALM_T41 41 | |
74 | #define MXT_PROCI_TOUCHSUPPRESSION_T42 42 | |
75 | #define MXT_PROCI_STYLUS_T47 47 | |
76 | #define MXT_PROCG_NOISESUPPRESSION_T48 48 | |
77 | #define MXT_SPT_COMMSCONFIG_T18 18 | |
78 | #define MXT_SPT_GPIOPWM_T19 19 | |
79 | #define MXT_SPT_SELFTEST_T25 25 | |
80 | #define MXT_SPT_CTECONFIG_T28 28 | |
81 | #define MXT_SPT_USERDATA_T38 38 | |
82 | #define MXT_SPT_DIGITIZER_T43 43 | |
83 | #define MXT_SPT_MESSAGECOUNT_T44 44 | |
84 | #define MXT_SPT_CTECONFIG_T46 46 | |
b23157dc | 85 | #define MXT_TOUCH_MULTITOUCHSCREEN_T100 100 |
81c88a71 | 86 | |
5f3f9bc2 ND |
87 | /* MXT_GEN_MESSAGE_T5 object */ |
88 | #define MXT_RPTID_NOMSG 0xff | |
89 | ||
81c88a71 | 90 | /* MXT_GEN_COMMAND_T6 field */ |
7686b108 IV |
91 | #define MXT_COMMAND_RESET 0 |
92 | #define MXT_COMMAND_BACKUPNV 1 | |
93 | #define MXT_COMMAND_CALIBRATE 2 | |
94 | #define MXT_COMMAND_REPORTALL 3 | |
95 | #define MXT_COMMAND_DIAGNOSTIC 5 | |
96 | ||
a4a2ef46 IV |
97 | /* Define for T6 status byte */ |
98 | #define MXT_T6_STATUS_RESET (1 << 7) | |
497767d1 ND |
99 | #define MXT_T6_STATUS_OFL (1 << 6) |
100 | #define MXT_T6_STATUS_SIGERR (1 << 5) | |
101 | #define MXT_T6_STATUS_CAL (1 << 4) | |
102 | #define MXT_T6_STATUS_CFGERR (1 << 3) | |
103 | #define MXT_T6_STATUS_COMSERR (1 << 2) | |
a4a2ef46 | 104 | |
81c88a71 | 105 | /* MXT_GEN_POWER_T7 field */ |
7f405483 LT |
106 | #define MXT_POWER_IDLEACQINT 0 |
107 | #define MXT_POWER_ACTVACQINT 1 | |
108 | #define MXT_POWER_ACTV2IDLETO 2 | |
7686b108 | 109 | |
81c88a71 | 110 | /* MXT_GEN_ACQUIRE_T8 field */ |
7686b108 IV |
111 | #define MXT_ACQUIRE_CHRGTIME 0 |
112 | #define MXT_ACQUIRE_TCHDRIFT 2 | |
113 | #define MXT_ACQUIRE_DRIFTST 3 | |
114 | #define MXT_ACQUIRE_TCHAUTOCAL 4 | |
115 | #define MXT_ACQUIRE_SYNC 5 | |
116 | #define MXT_ACQUIRE_ATCHCALST 6 | |
117 | #define MXT_ACQUIRE_ATCHCALSTHR 7 | |
118 | ||
81c88a71 | 119 | /* MXT_TOUCH_MULTI_T9 field */ |
7f405483 | 120 | #define MXT_TOUCH_CTRL 0 |
61dc1aba ND |
121 | #define MXT_T9_ORIENT 9 |
122 | #define MXT_T9_RANGE 18 | |
123 | ||
f3889ed1 ND |
124 | /* MXT_TOUCH_MULTI_T9 status */ |
125 | #define MXT_T9_UNGRIP (1 << 0) | |
126 | #define MXT_T9_SUPPRESS (1 << 1) | |
127 | #define MXT_T9_AMP (1 << 2) | |
128 | #define MXT_T9_VECTOR (1 << 3) | |
129 | #define MXT_T9_MOVE (1 << 4) | |
130 | #define MXT_T9_RELEASE (1 << 5) | |
131 | #define MXT_T9_PRESS (1 << 6) | |
132 | #define MXT_T9_DETECT (1 << 7) | |
133 | ||
61dc1aba ND |
134 | struct t9_range { |
135 | u16 x; | |
136 | u16 y; | |
137 | } __packed; | |
138 | ||
f3889ed1 ND |
139 | /* MXT_TOUCH_MULTI_T9 orient */ |
140 | #define MXT_T9_ORIENT_SWITCH (1 << 0) | |
7686b108 | 141 | |
81c88a71 | 142 | /* MXT_PROCI_GRIPFACE_T20 field */ |
7686b108 IV |
143 | #define MXT_GRIPFACE_CTRL 0 |
144 | #define MXT_GRIPFACE_XLOGRIP 1 | |
145 | #define MXT_GRIPFACE_XHIGRIP 2 | |
146 | #define MXT_GRIPFACE_YLOGRIP 3 | |
147 | #define MXT_GRIPFACE_YHIGRIP 4 | |
148 | #define MXT_GRIPFACE_MAXTCHS 5 | |
149 | #define MXT_GRIPFACE_SZTHR1 7 | |
150 | #define MXT_GRIPFACE_SZTHR2 8 | |
151 | #define MXT_GRIPFACE_SHPTHR1 9 | |
152 | #define MXT_GRIPFACE_SHPTHR2 10 | |
153 | #define MXT_GRIPFACE_SUPEXTTO 11 | |
154 | ||
155 | /* MXT_PROCI_NOISE field */ | |
156 | #define MXT_NOISE_CTRL 0 | |
157 | #define MXT_NOISE_OUTFLEN 1 | |
158 | #define MXT_NOISE_GCAFUL_LSB 3 | |
159 | #define MXT_NOISE_GCAFUL_MSB 4 | |
160 | #define MXT_NOISE_GCAFLL_LSB 5 | |
161 | #define MXT_NOISE_GCAFLL_MSB 6 | |
162 | #define MXT_NOISE_ACTVGCAFVALID 7 | |
163 | #define MXT_NOISE_NOISETHR 8 | |
164 | #define MXT_NOISE_FREQHOPSCALE 10 | |
165 | #define MXT_NOISE_FREQ0 11 | |
166 | #define MXT_NOISE_FREQ1 12 | |
167 | #define MXT_NOISE_FREQ2 13 | |
168 | #define MXT_NOISE_FREQ3 14 | |
169 | #define MXT_NOISE_FREQ4 15 | |
170 | #define MXT_NOISE_IDLEGCAFVALID 16 | |
171 | ||
81c88a71 | 172 | /* MXT_SPT_COMMSCONFIG_T18 */ |
7686b108 IV |
173 | #define MXT_COMMS_CTRL 0 |
174 | #define MXT_COMMS_CMD 1 | |
175 | ||
81c88a71 | 176 | /* MXT_SPT_CTECONFIG_T28 field */ |
7686b108 IV |
177 | #define MXT_CTE_CTRL 0 |
178 | #define MXT_CTE_CMD 1 | |
179 | #define MXT_CTE_MODE 2 | |
180 | #define MXT_CTE_IDLEGCAFDEPTH 3 | |
181 | #define MXT_CTE_ACTVGCAFDEPTH 4 | |
979a72da | 182 | #define MXT_CTE_VOLTAGE 5 |
7686b108 IV |
183 | |
184 | #define MXT_VOLTAGE_DEFAULT 2700000 | |
185 | #define MXT_VOLTAGE_STEP 10000 | |
186 | ||
81c88a71 | 187 | /* Define for MXT_GEN_COMMAND_T6 */ |
7686b108 | 188 | #define MXT_BOOT_VALUE 0xa5 |
a4a2ef46 | 189 | #define MXT_RESET_VALUE 0x01 |
7686b108 | 190 | #define MXT_BACKUP_VALUE 0x55 |
a4a2ef46 | 191 | |
b23157dc ND |
192 | /* T100 Multiple Touch Touchscreen */ |
193 | #define MXT_T100_CTRL 0 | |
194 | #define MXT_T100_CFG1 1 | |
195 | #define MXT_T100_TCHAUX 3 | |
196 | #define MXT_T100_XRANGE 13 | |
197 | #define MXT_T100_YRANGE 24 | |
198 | ||
199 | #define MXT_T100_CFG_SWITCHXY BIT(5) | |
200 | ||
201 | #define MXT_T100_TCHAUX_VECT BIT(0) | |
202 | #define MXT_T100_TCHAUX_AMPL BIT(1) | |
203 | #define MXT_T100_TCHAUX_AREA BIT(2) | |
204 | ||
205 | #define MXT_T100_DETECT BIT(7) | |
206 | #define MXT_T100_TYPE_MASK 0x70 | |
207 | ||
208 | enum t100_type { | |
209 | MXT_T100_TYPE_FINGER = 1, | |
210 | MXT_T100_TYPE_PASSIVE_STYLUS = 2, | |
211 | MXT_T100_TYPE_HOVERING_FINGER = 4, | |
212 | MXT_T100_TYPE_GLOVE = 5, | |
213 | MXT_T100_TYPE_LARGE_TOUCH = 6, | |
214 | }; | |
215 | ||
216 | #define MXT_DISTANCE_ACTIVE_TOUCH 0 | |
217 | #define MXT_DISTANCE_HOVERING 1 | |
218 | ||
219 | #define MXT_TOUCH_MAJOR_DEFAULT 1 | |
220 | #define MXT_PRESSURE_DEFAULT 1 | |
221 | ||
a4a2ef46 | 222 | /* Delay times */ |
8343bce1 LT |
223 | #define MXT_BACKUP_TIME 50 /* msec */ |
224 | #define MXT_RESET_TIME 200 /* msec */ | |
a4a2ef46 | 225 | #define MXT_RESET_TIMEOUT 3000 /* msec */ |
c3f78043 | 226 | #define MXT_CRC_TIMEOUT 1000 /* msec */ |
a0434b75 BL |
227 | #define MXT_FW_RESET_TIME 3000 /* msec */ |
228 | #define MXT_FW_CHG_TIMEOUT 300 /* msec */ | |
4cf51c38 JS |
229 | |
230 | /* Command to unlock bootloader */ | |
7686b108 IV |
231 | #define MXT_UNLOCK_CMD_MSB 0xaa |
232 | #define MXT_UNLOCK_CMD_LSB 0xdc | |
4cf51c38 JS |
233 | |
234 | /* Bootloader mode status */ | |
7686b108 IV |
235 | #define MXT_WAITING_BOOTLOAD_CMD 0xc0 /* valid 7 6 bit only */ |
236 | #define MXT_WAITING_FRAME_DATA 0x80 /* valid 7 6 bit only */ | |
237 | #define MXT_FRAME_CRC_CHECK 0x02 | |
238 | #define MXT_FRAME_CRC_FAIL 0x03 | |
239 | #define MXT_FRAME_CRC_PASS 0x04 | |
240 | #define MXT_APP_CRC_FAIL 0x40 /* valid 7 8 bit only */ | |
241 | #define MXT_BOOT_STATUS_MASK 0x3f | |
e57a66aa ND |
242 | #define MXT_BOOT_EXTENDED_ID (1 << 5) |
243 | #define MXT_BOOT_ID_MASK 0x1f | |
4cf51c38 | 244 | |
4cf51c38 | 245 | /* Touchscreen absolute values */ |
7686b108 | 246 | #define MXT_MAX_AREA 0xff |
4cf51c38 | 247 | |
22dfab7f DK |
248 | #define MXT_PIXELS_PER_MM 20 |
249 | ||
7686b108 | 250 | struct mxt_info { |
4cf51c38 JS |
251 | u8 family_id; |
252 | u8 variant_id; | |
253 | u8 version; | |
254 | u8 build; | |
255 | u8 matrix_xsize; | |
256 | u8 matrix_ysize; | |
257 | u8 object_num; | |
258 | }; | |
259 | ||
7686b108 | 260 | struct mxt_object { |
4cf51c38 JS |
261 | u8 type; |
262 | u16 start_address; | |
1e0c0c5b DK |
263 | u8 size_minus_one; |
264 | u8 instances_minus_one; | |
4cf51c38 | 265 | u8 num_report_ids; |
333e5a9a | 266 | } __packed; |
4cf51c38 | 267 | |
4cf51c38 | 268 | /* Each client has this additional data */ |
7686b108 | 269 | struct mxt_data { |
4cf51c38 JS |
270 | struct i2c_client *client; |
271 | struct input_dev *input_dev; | |
ec02ac2b | 272 | char phys[64]; /* device physical location */ |
7686b108 IV |
273 | const struct mxt_platform_data *pdata; |
274 | struct mxt_object *object_table; | |
275 | struct mxt_info info; | |
4cf51c38 | 276 | unsigned int irq; |
910d8051 JS |
277 | unsigned int max_x; |
278 | unsigned int max_y; | |
d79e7e47 | 279 | bool in_bootloader; |
4ce6fa01 | 280 | u16 mem_size; |
b23157dc ND |
281 | u8 t100_aux_ampl; |
282 | u8 t100_aux_area; | |
283 | u8 t100_aux_vect; | |
9d8dc3e5 | 284 | u8 max_reportid; |
c3f78043 | 285 | u32 config_crc; |
4ce6fa01 | 286 | u32 info_crc; |
f28a842d | 287 | u8 bootloader_addr; |
5f3f9bc2 | 288 | u8 *msg_buf; |
497767d1 | 289 | u8 t6_status; |
b9b05a89 | 290 | bool update_input; |
9d8dc3e5 ND |
291 | u8 last_message_count; |
292 | u8 num_touchids; | |
b23157dc | 293 | u8 multitouch; |
333e5a9a DK |
294 | |
295 | /* Cached parameters from object table */ | |
b9b05a89 | 296 | u16 T5_address; |
5f3f9bc2 | 297 | u8 T5_msg_size; |
fdf80421 | 298 | u8 T6_reportid; |
a4a2ef46 | 299 | u16 T6_address; |
4ce6fa01 | 300 | u16 T7_address; |
333e5a9a DK |
301 | u8 T9_reportid_min; |
302 | u8 T9_reportid_max; | |
22dfab7f | 303 | u8 T19_reportid; |
9d8dc3e5 | 304 | u16 T44_address; |
b23157dc ND |
305 | u8 T100_reportid_min; |
306 | u8 T100_reportid_max; | |
d79e7e47 BL |
307 | |
308 | /* for fw update in bootloader */ | |
309 | struct completion bl_completion; | |
a4a2ef46 IV |
310 | |
311 | /* for reset handling */ | |
312 | struct completion reset_completion; | |
c3f78043 ND |
313 | |
314 | /* for config update handling */ | |
315 | struct completion crc_completion; | |
4cf51c38 JS |
316 | }; |
317 | ||
1e0c0c5b DK |
318 | static size_t mxt_obj_size(const struct mxt_object *obj) |
319 | { | |
320 | return obj->size_minus_one + 1; | |
321 | } | |
322 | ||
323 | static size_t mxt_obj_instances(const struct mxt_object *obj) | |
324 | { | |
325 | return obj->instances_minus_one + 1; | |
326 | } | |
327 | ||
7686b108 | 328 | static bool mxt_object_readable(unsigned int type) |
4cf51c38 JS |
329 | { |
330 | switch (type) { | |
81c88a71 IV |
331 | case MXT_GEN_COMMAND_T6: |
332 | case MXT_GEN_POWER_T7: | |
333 | case MXT_GEN_ACQUIRE_T8: | |
334 | case MXT_GEN_DATASOURCE_T53: | |
335 | case MXT_TOUCH_MULTI_T9: | |
336 | case MXT_TOUCH_KEYARRAY_T15: | |
337 | case MXT_TOUCH_PROXIMITY_T23: | |
338 | case MXT_TOUCH_PROXKEY_T52: | |
339 | case MXT_PROCI_GRIPFACE_T20: | |
340 | case MXT_PROCG_NOISE_T22: | |
341 | case MXT_PROCI_ONETOUCH_T24: | |
342 | case MXT_PROCI_TWOTOUCH_T27: | |
343 | case MXT_PROCI_GRIP_T40: | |
344 | case MXT_PROCI_PALM_T41: | |
345 | case MXT_PROCI_TOUCHSUPPRESSION_T42: | |
346 | case MXT_PROCI_STYLUS_T47: | |
347 | case MXT_PROCG_NOISESUPPRESSION_T48: | |
348 | case MXT_SPT_COMMSCONFIG_T18: | |
349 | case MXT_SPT_GPIOPWM_T19: | |
350 | case MXT_SPT_SELFTEST_T25: | |
351 | case MXT_SPT_CTECONFIG_T28: | |
352 | case MXT_SPT_USERDATA_T38: | |
353 | case MXT_SPT_DIGITIZER_T43: | |
354 | case MXT_SPT_CTECONFIG_T46: | |
4cf51c38 JS |
355 | return true; |
356 | default: | |
357 | return false; | |
358 | } | |
359 | } | |
360 | ||
5f3f9bc2 | 361 | static void mxt_dump_message(struct mxt_data *data, u8 *message) |
4cf51c38 | 362 | { |
5f3f9bc2 ND |
363 | dev_dbg(&data->client->dev, "message: %*ph\n", |
364 | data->T5_msg_size, message); | |
4cf51c38 JS |
365 | } |
366 | ||
a4a2ef46 IV |
367 | static int mxt_wait_for_completion(struct mxt_data *data, |
368 | struct completion *comp, | |
369 | unsigned int timeout_ms) | |
d79e7e47 BL |
370 | { |
371 | struct device *dev = &data->client->dev; | |
d79e7e47 BL |
372 | unsigned long timeout = msecs_to_jiffies(timeout_ms); |
373 | long ret; | |
374 | ||
375 | ret = wait_for_completion_interruptible_timeout(comp, timeout); | |
376 | if (ret < 0) { | |
377 | return ret; | |
378 | } else if (ret == 0) { | |
379 | dev_err(dev, "Wait for completion timed out.\n"); | |
380 | return -ETIMEDOUT; | |
381 | } | |
382 | return 0; | |
383 | } | |
384 | ||
f28a842d ND |
385 | static int mxt_bootloader_read(struct mxt_data *data, |
386 | u8 *val, unsigned int count) | |
387 | { | |
388 | int ret; | |
389 | struct i2c_msg msg; | |
390 | ||
391 | msg.addr = data->bootloader_addr; | |
392 | msg.flags = data->client->flags & I2C_M_TEN; | |
393 | msg.flags |= I2C_M_RD; | |
394 | msg.len = count; | |
395 | msg.buf = val; | |
396 | ||
397 | ret = i2c_transfer(data->client->adapter, &msg, 1); | |
f28a842d ND |
398 | if (ret == 1) { |
399 | ret = 0; | |
400 | } else { | |
401 | ret = ret < 0 ? ret : -EIO; | |
402 | dev_err(&data->client->dev, "%s: i2c recv failed (%d)\n", | |
403 | __func__, ret); | |
404 | } | |
405 | ||
406 | return ret; | |
407 | } | |
408 | ||
409 | static int mxt_bootloader_write(struct mxt_data *data, | |
410 | const u8 * const val, unsigned int count) | |
411 | { | |
412 | int ret; | |
413 | struct i2c_msg msg; | |
414 | ||
415 | msg.addr = data->bootloader_addr; | |
416 | msg.flags = data->client->flags & I2C_M_TEN; | |
417 | msg.len = count; | |
418 | msg.buf = (u8 *)val; | |
419 | ||
420 | ret = i2c_transfer(data->client->adapter, &msg, 1); | |
421 | if (ret == 1) { | |
422 | ret = 0; | |
423 | } else { | |
424 | ret = ret < 0 ? ret : -EIO; | |
425 | dev_err(&data->client->dev, "%s: i2c send failed (%d)\n", | |
426 | __func__, ret); | |
427 | } | |
428 | ||
429 | return ret; | |
430 | } | |
431 | ||
8efaa5e5 | 432 | static int mxt_lookup_bootloader_address(struct mxt_data *data, bool retry) |
f28a842d ND |
433 | { |
434 | u8 appmode = data->client->addr; | |
435 | u8 bootloader; | |
436 | ||
437 | switch (appmode) { | |
438 | case 0x4a: | |
439 | case 0x4b: | |
44a0bab2 | 440 | /* Chips after 1664S use different scheme */ |
8efaa5e5 | 441 | if (retry || data->info.family_id >= 0xa2) { |
44a0bab2 ND |
442 | bootloader = appmode - 0x24; |
443 | break; | |
444 | } | |
445 | /* Fall through for normal case */ | |
f28a842d ND |
446 | case 0x4c: |
447 | case 0x4d: | |
448 | case 0x5a: | |
449 | case 0x5b: | |
450 | bootloader = appmode - 0x26; | |
451 | break; | |
6cd1ab0f | 452 | |
f28a842d ND |
453 | default: |
454 | dev_err(&data->client->dev, | |
455 | "Appmode i2c address 0x%02x not found\n", | |
456 | appmode); | |
457 | return -EINVAL; | |
458 | } | |
459 | ||
460 | data->bootloader_addr = bootloader; | |
461 | return 0; | |
462 | } | |
463 | ||
6cd1ab0f | 464 | static int mxt_probe_bootloader(struct mxt_data *data, bool alt_address) |
a9fdd1e6 ND |
465 | { |
466 | struct device *dev = &data->client->dev; | |
6cd1ab0f | 467 | int error; |
a9fdd1e6 ND |
468 | u8 val; |
469 | bool crc_failure; | |
470 | ||
6cd1ab0f DT |
471 | error = mxt_lookup_bootloader_address(data, alt_address); |
472 | if (error) | |
473 | return error; | |
a9fdd1e6 | 474 | |
6cd1ab0f DT |
475 | error = mxt_bootloader_read(data, &val, 1); |
476 | if (error) | |
477 | return error; | |
a9fdd1e6 ND |
478 | |
479 | /* Check app crc fail mode */ | |
480 | crc_failure = (val & ~MXT_BOOT_STATUS_MASK) == MXT_APP_CRC_FAIL; | |
481 | ||
482 | dev_err(dev, "Detected bootloader, status:%02X%s\n", | |
483 | val, crc_failure ? ", APP_CRC_FAIL" : ""); | |
484 | ||
485 | return 0; | |
486 | } | |
487 | ||
e57a66aa ND |
488 | static u8 mxt_get_bootloader_version(struct mxt_data *data, u8 val) |
489 | { | |
490 | struct device *dev = &data->client->dev; | |
491 | u8 buf[3]; | |
492 | ||
493 | if (val & MXT_BOOT_EXTENDED_ID) { | |
494 | if (mxt_bootloader_read(data, &buf[0], 3) != 0) { | |
495 | dev_err(dev, "%s: i2c failure\n", __func__); | |
68807a0c | 496 | return val; |
e57a66aa ND |
497 | } |
498 | ||
499 | dev_dbg(dev, "Bootloader ID:%d Version:%d\n", buf[1], buf[2]); | |
500 | ||
501 | return buf[0]; | |
502 | } else { | |
503 | dev_dbg(dev, "Bootloader ID:%d\n", val & MXT_BOOT_ID_MASK); | |
504 | ||
505 | return val; | |
506 | } | |
507 | } | |
508 | ||
385deb96 ND |
509 | static int mxt_check_bootloader(struct mxt_data *data, unsigned int state, |
510 | bool wait) | |
4cf51c38 | 511 | { |
f28a842d | 512 | struct device *dev = &data->client->dev; |
4cf51c38 | 513 | u8 val; |
d79e7e47 | 514 | int ret; |
4cf51c38 JS |
515 | |
516 | recheck: | |
385deb96 | 517 | if (wait) { |
d79e7e47 BL |
518 | /* |
519 | * In application update mode, the interrupt | |
520 | * line signals state transitions. We must wait for the | |
521 | * CHG assertion before reading the status byte. | |
522 | * Once the status byte has been read, the line is deasserted. | |
523 | */ | |
a4a2ef46 IV |
524 | ret = mxt_wait_for_completion(data, &data->bl_completion, |
525 | MXT_FW_CHG_TIMEOUT); | |
d79e7e47 BL |
526 | if (ret) { |
527 | /* | |
528 | * TODO: handle -ERESTARTSYS better by terminating | |
529 | * fw update process before returning to userspace | |
530 | * by writing length 0x000 to device (iff we are in | |
531 | * WAITING_FRAME_DATA state). | |
532 | */ | |
f28a842d | 533 | dev_err(dev, "Update wait error %d\n", ret); |
d79e7e47 BL |
534 | return ret; |
535 | } | |
536 | } | |
537 | ||
f28a842d ND |
538 | ret = mxt_bootloader_read(data, &val, 1); |
539 | if (ret) | |
540 | return ret; | |
4cf51c38 | 541 | |
e57a66aa ND |
542 | if (state == MXT_WAITING_BOOTLOAD_CMD) |
543 | val = mxt_get_bootloader_version(data, val); | |
544 | ||
4cf51c38 | 545 | switch (state) { |
7686b108 IV |
546 | case MXT_WAITING_BOOTLOAD_CMD: |
547 | case MXT_WAITING_FRAME_DATA: | |
a9fdd1e6 | 548 | case MXT_APP_CRC_FAIL: |
7686b108 | 549 | val &= ~MXT_BOOT_STATUS_MASK; |
4cf51c38 | 550 | break; |
7686b108 | 551 | case MXT_FRAME_CRC_PASS: |
f943c74a | 552 | if (val == MXT_FRAME_CRC_CHECK) { |
4cf51c38 | 553 | goto recheck; |
f943c74a ND |
554 | } else if (val == MXT_FRAME_CRC_FAIL) { |
555 | dev_err(dev, "Bootloader CRC fail\n"); | |
556 | return -EINVAL; | |
557 | } | |
4cf51c38 JS |
558 | break; |
559 | default: | |
560 | return -EINVAL; | |
561 | } | |
562 | ||
563 | if (val != state) { | |
f28a842d | 564 | dev_err(dev, "Invalid bootloader state %02X != %02X\n", |
7bed6805 | 565 | val, state); |
4cf51c38 JS |
566 | return -EINVAL; |
567 | } | |
568 | ||
569 | return 0; | |
570 | } | |
571 | ||
8efaa5e5 | 572 | static int mxt_send_bootloader_cmd(struct mxt_data *data, bool unlock) |
4cf51c38 | 573 | { |
f28a842d | 574 | int ret; |
4cf51c38 JS |
575 | u8 buf[2]; |
576 | ||
8efaa5e5 ND |
577 | if (unlock) { |
578 | buf[0] = MXT_UNLOCK_CMD_LSB; | |
579 | buf[1] = MXT_UNLOCK_CMD_MSB; | |
580 | } else { | |
581 | buf[0] = 0x01; | |
582 | buf[1] = 0x01; | |
583 | } | |
4cf51c38 | 584 | |
f28a842d ND |
585 | ret = mxt_bootloader_write(data, buf, 2); |
586 | if (ret) | |
587 | return ret; | |
4cf51c38 JS |
588 | |
589 | return 0; | |
590 | } | |
591 | ||
7686b108 | 592 | static int __mxt_read_reg(struct i2c_client *client, |
4cf51c38 JS |
593 | u16 reg, u16 len, void *val) |
594 | { | |
595 | struct i2c_msg xfer[2]; | |
596 | u8 buf[2]; | |
771733e3 | 597 | int ret; |
4cf51c38 JS |
598 | |
599 | buf[0] = reg & 0xff; | |
600 | buf[1] = (reg >> 8) & 0xff; | |
601 | ||
602 | /* Write register */ | |
603 | xfer[0].addr = client->addr; | |
604 | xfer[0].flags = 0; | |
605 | xfer[0].len = 2; | |
606 | xfer[0].buf = buf; | |
607 | ||
608 | /* Read data */ | |
609 | xfer[1].addr = client->addr; | |
610 | xfer[1].flags = I2C_M_RD; | |
611 | xfer[1].len = len; | |
612 | xfer[1].buf = val; | |
613 | ||
771733e3 DK |
614 | ret = i2c_transfer(client->adapter, xfer, 2); |
615 | if (ret == 2) { | |
616 | ret = 0; | |
617 | } else { | |
618 | if (ret >= 0) | |
619 | ret = -EIO; | |
620 | dev_err(&client->dev, "%s: i2c transfer failed (%d)\n", | |
621 | __func__, ret); | |
4cf51c38 JS |
622 | } |
623 | ||
771733e3 | 624 | return ret; |
4cf51c38 JS |
625 | } |
626 | ||
9638ab7c DK |
627 | static int __mxt_write_reg(struct i2c_client *client, u16 reg, u16 len, |
628 | const void *val) | |
4cf51c38 | 629 | { |
9638ab7c DK |
630 | u8 *buf; |
631 | size_t count; | |
771733e3 | 632 | int ret; |
4cf51c38 | 633 | |
9638ab7c DK |
634 | count = len + 2; |
635 | buf = kmalloc(count, GFP_KERNEL); | |
636 | if (!buf) | |
637 | return -ENOMEM; | |
4cf51c38 JS |
638 | |
639 | buf[0] = reg & 0xff; | |
640 | buf[1] = (reg >> 8) & 0xff; | |
9638ab7c | 641 | memcpy(&buf[2], val, len); |
4cf51c38 | 642 | |
9638ab7c DK |
643 | ret = i2c_master_send(client, buf, count); |
644 | if (ret == count) { | |
771733e3 DK |
645 | ret = 0; |
646 | } else { | |
647 | if (ret >= 0) | |
648 | ret = -EIO; | |
649 | dev_err(&client->dev, "%s: i2c send failed (%d)\n", | |
650 | __func__, ret); | |
4cf51c38 JS |
651 | } |
652 | ||
9638ab7c | 653 | kfree(buf); |
771733e3 | 654 | return ret; |
4cf51c38 JS |
655 | } |
656 | ||
9638ab7c | 657 | static int mxt_write_reg(struct i2c_client *client, u16 reg, u8 val) |
4cf51c38 | 658 | { |
9638ab7c | 659 | return __mxt_write_reg(client, reg, 1, &val); |
4cf51c38 JS |
660 | } |
661 | ||
7686b108 IV |
662 | static struct mxt_object * |
663 | mxt_get_object(struct mxt_data *data, u8 type) | |
4cf51c38 | 664 | { |
7686b108 | 665 | struct mxt_object *object; |
4cf51c38 JS |
666 | int i; |
667 | ||
668 | for (i = 0; i < data->info.object_num; i++) { | |
669 | object = data->object_table + i; | |
670 | if (object->type == type) | |
671 | return object; | |
672 | } | |
673 | ||
50a77c65 | 674 | dev_warn(&data->client->dev, "Invalid object type T%u\n", type); |
4cf51c38 JS |
675 | return NULL; |
676 | } | |
677 | ||
497767d1 ND |
678 | static void mxt_proc_t6_messages(struct mxt_data *data, u8 *msg) |
679 | { | |
680 | struct device *dev = &data->client->dev; | |
681 | u8 status = msg[1]; | |
682 | u32 crc = msg[2] | (msg[3] << 8) | (msg[4] << 16); | |
683 | ||
684 | complete(&data->crc_completion); | |
685 | ||
686 | if (crc != data->config_crc) { | |
687 | data->config_crc = crc; | |
688 | dev_dbg(dev, "T6 Config Checksum: 0x%06X\n", crc); | |
689 | } | |
690 | ||
691 | /* Detect reset */ | |
692 | if (status & MXT_T6_STATUS_RESET) | |
693 | complete(&data->reset_completion); | |
694 | ||
695 | /* Output debug if status has changed */ | |
696 | if (status != data->t6_status) | |
697 | dev_dbg(dev, "T6 Status 0x%02X%s%s%s%s%s%s%s\n", | |
698 | status, | |
699 | status == 0 ? " OK" : "", | |
700 | status & MXT_T6_STATUS_RESET ? " RESET" : "", | |
701 | status & MXT_T6_STATUS_OFL ? " OFL" : "", | |
702 | status & MXT_T6_STATUS_SIGERR ? " SIGERR" : "", | |
703 | status & MXT_T6_STATUS_CAL ? " CAL" : "", | |
704 | status & MXT_T6_STATUS_CFGERR ? " CFGERR" : "", | |
705 | status & MXT_T6_STATUS_COMSERR ? " COMSERR" : ""); | |
706 | ||
707 | /* Save current status */ | |
708 | data->t6_status = status; | |
709 | } | |
710 | ||
7f405483 LT |
711 | static int mxt_write_object(struct mxt_data *data, |
712 | u8 type, u8 offset, u8 val) | |
713 | { | |
714 | struct mxt_object *object; | |
715 | u16 reg; | |
716 | ||
717 | object = mxt_get_object(data, type); | |
718 | if (!object || offset >= mxt_obj_size(object)) | |
719 | return -EINVAL; | |
720 | ||
721 | reg = object->start_address; | |
722 | return mxt_write_reg(data->client, reg + offset, val); | |
723 | } | |
724 | ||
5f3f9bc2 | 725 | static void mxt_input_button(struct mxt_data *data, u8 *message) |
22dfab7f DK |
726 | { |
727 | struct input_dev *input = data->input_dev; | |
fb5e4c3e | 728 | const struct mxt_platform_data *pdata = data->pdata; |
22dfab7f DK |
729 | int i; |
730 | ||
fb5e4c3e ND |
731 | for (i = 0; i < pdata->t19_num_keys; i++) { |
732 | if (pdata->t19_keymap[i] == KEY_RESERVED) | |
22dfab7f | 733 | continue; |
c37f6d38 DT |
734 | |
735 | /* Active-low switch */ | |
736 | input_report_key(input, pdata->t19_keymap[i], | |
737 | !(message[1] & BIT(i))); | |
22dfab7f DK |
738 | } |
739 | } | |
740 | ||
b735fbe0 | 741 | static void mxt_input_sync(struct mxt_data *data) |
eef820dc | 742 | { |
b735fbe0 BL |
743 | input_mt_report_pointer_emulation(data->input_dev, |
744 | data->pdata->t19_num_keys); | |
745 | input_sync(data->input_dev); | |
eef820dc ND |
746 | } |
747 | ||
b9b05a89 | 748 | static void mxt_proc_t9_message(struct mxt_data *data, u8 *message) |
4cf51c38 | 749 | { |
4cf51c38 | 750 | struct device *dev = &data->client->dev; |
fba5bc31 | 751 | struct input_dev *input_dev = data->input_dev; |
5f3f9bc2 ND |
752 | int id; |
753 | u8 status; | |
4cf51c38 JS |
754 | int x; |
755 | int y; | |
756 | int area; | |
fea9e467 | 757 | int amplitude; |
4cf51c38 | 758 | |
5f3f9bc2 ND |
759 | id = message[0] - data->T9_reportid_min; |
760 | status = message[1]; | |
761 | x = (message[2] << 4) | ((message[4] >> 4) & 0xf); | |
762 | y = (message[3] << 4) | ((message[4] & 0xf)); | |
eef820dc ND |
763 | |
764 | /* Handle 10/12 bit switching */ | |
910d8051 | 765 | if (data->max_x < 1024) |
eef820dc | 766 | x >>= 2; |
910d8051 | 767 | if (data->max_y < 1024) |
eef820dc | 768 | y >>= 2; |
910d8051 | 769 | |
5f3f9bc2 ND |
770 | area = message[5]; |
771 | amplitude = message[6]; | |
4cf51c38 | 772 | |
b2e459b8 DK |
773 | dev_dbg(dev, |
774 | "[%u] %c%c%c%c%c%c%c%c x: %5u y: %5u area: %3u amp: %3u\n", | |
775 | id, | |
f3889ed1 ND |
776 | (status & MXT_T9_DETECT) ? 'D' : '.', |
777 | (status & MXT_T9_PRESS) ? 'P' : '.', | |
778 | (status & MXT_T9_RELEASE) ? 'R' : '.', | |
779 | (status & MXT_T9_MOVE) ? 'M' : '.', | |
780 | (status & MXT_T9_VECTOR) ? 'V' : '.', | |
781 | (status & MXT_T9_AMP) ? 'A' : '.', | |
782 | (status & MXT_T9_SUPPRESS) ? 'S' : '.', | |
783 | (status & MXT_T9_UNGRIP) ? 'U' : '.', | |
fea9e467 | 784 | x, y, area, amplitude); |
b2e459b8 | 785 | |
fba5bc31 | 786 | input_mt_slot(input_dev, id); |
fba5bc31 | 787 | |
f3889ed1 | 788 | if (status & MXT_T9_DETECT) { |
eef820dc ND |
789 | /* |
790 | * Multiple bits may be set if the host is slow to read | |
791 | * the status messages, indicating all the events that | |
792 | * have happened. | |
793 | */ | |
794 | if (status & MXT_T9_RELEASE) { | |
795 | input_mt_report_slot_state(input_dev, | |
796 | MT_TOOL_FINGER, 0); | |
b735fbe0 | 797 | mxt_input_sync(data); |
eef820dc ND |
798 | } |
799 | ||
800 | /* Touch active */ | |
801 | input_mt_report_slot_state(input_dev, MT_TOOL_FINGER, 1); | |
fba5bc31 DK |
802 | input_report_abs(input_dev, ABS_MT_POSITION_X, x); |
803 | input_report_abs(input_dev, ABS_MT_POSITION_Y, y); | |
fea9e467 | 804 | input_report_abs(input_dev, ABS_MT_PRESSURE, amplitude); |
fba5bc31 | 805 | input_report_abs(input_dev, ABS_MT_TOUCH_MAJOR, area); |
eef820dc ND |
806 | } else { |
807 | /* Touch no longer active, close out slot */ | |
808 | input_mt_report_slot_state(input_dev, MT_TOOL_FINGER, 0); | |
fba5bc31 | 809 | } |
b9b05a89 ND |
810 | |
811 | data->update_input = true; | |
4cf51c38 | 812 | } |
4cf51c38 | 813 | |
b23157dc ND |
814 | static void mxt_proc_t100_message(struct mxt_data *data, u8 *message) |
815 | { | |
816 | struct device *dev = &data->client->dev; | |
817 | struct input_dev *input_dev = data->input_dev; | |
818 | int id; | |
819 | u8 status; | |
820 | u8 type = 0; | |
821 | u16 x; | |
822 | u16 y; | |
823 | int distance = 0; | |
824 | int tool = 0; | |
825 | u8 major = 0; | |
826 | u8 pressure = 0; | |
827 | u8 orientation = 0; | |
828 | ||
829 | id = message[0] - data->T100_reportid_min - 2; | |
830 | ||
831 | /* ignore SCRSTATUS events */ | |
832 | if (id < 0) | |
833 | return; | |
834 | ||
835 | status = message[1]; | |
836 | x = get_unaligned_le16(&message[2]); | |
837 | y = get_unaligned_le16(&message[4]); | |
838 | ||
839 | if (status & MXT_T100_DETECT) { | |
840 | type = (status & MXT_T100_TYPE_MASK) >> 4; | |
841 | ||
842 | switch (type) { | |
843 | case MXT_T100_TYPE_HOVERING_FINGER: | |
844 | tool = MT_TOOL_FINGER; | |
845 | distance = MXT_DISTANCE_HOVERING; | |
846 | ||
847 | if (data->t100_aux_vect) | |
848 | orientation = message[data->t100_aux_vect]; | |
849 | ||
850 | break; | |
851 | ||
852 | case MXT_T100_TYPE_FINGER: | |
853 | case MXT_T100_TYPE_GLOVE: | |
854 | tool = MT_TOOL_FINGER; | |
855 | distance = MXT_DISTANCE_ACTIVE_TOUCH; | |
856 | ||
857 | if (data->t100_aux_area) | |
858 | major = message[data->t100_aux_area]; | |
859 | ||
860 | if (data->t100_aux_ampl) | |
861 | pressure = message[data->t100_aux_ampl]; | |
862 | ||
863 | if (data->t100_aux_vect) | |
864 | orientation = message[data->t100_aux_vect]; | |
865 | ||
866 | break; | |
867 | ||
868 | case MXT_T100_TYPE_PASSIVE_STYLUS: | |
869 | tool = MT_TOOL_PEN; | |
870 | ||
871 | /* | |
872 | * Passive stylus is reported with size zero so | |
873 | * hardcode. | |
874 | */ | |
875 | major = MXT_TOUCH_MAJOR_DEFAULT; | |
876 | ||
877 | if (data->t100_aux_ampl) | |
878 | pressure = message[data->t100_aux_ampl]; | |
879 | ||
880 | break; | |
881 | ||
882 | case MXT_T100_TYPE_LARGE_TOUCH: | |
883 | /* Ignore suppressed touch */ | |
884 | break; | |
885 | ||
886 | default: | |
887 | dev_dbg(dev, "Unexpected T100 type\n"); | |
888 | return; | |
889 | } | |
890 | } | |
891 | ||
892 | /* | |
893 | * Values reported should be non-zero if tool is touching the | |
894 | * device | |
895 | */ | |
896 | if (!pressure && type != MXT_T100_TYPE_HOVERING_FINGER) | |
897 | pressure = MXT_PRESSURE_DEFAULT; | |
898 | ||
899 | input_mt_slot(input_dev, id); | |
900 | ||
901 | if (status & MXT_T100_DETECT) { | |
902 | dev_dbg(dev, "[%u] type:%u x:%u y:%u a:%02X p:%02X v:%02X\n", | |
903 | id, type, x, y, major, pressure, orientation); | |
904 | ||
905 | input_mt_report_slot_state(input_dev, tool, 1); | |
906 | input_report_abs(input_dev, ABS_MT_POSITION_X, x); | |
907 | input_report_abs(input_dev, ABS_MT_POSITION_Y, y); | |
908 | input_report_abs(input_dev, ABS_MT_TOUCH_MAJOR, major); | |
909 | input_report_abs(input_dev, ABS_MT_PRESSURE, pressure); | |
910 | input_report_abs(input_dev, ABS_MT_DISTANCE, distance); | |
911 | input_report_abs(input_dev, ABS_MT_ORIENTATION, orientation); | |
912 | } else { | |
913 | dev_dbg(dev, "[%u] release\n", id); | |
914 | ||
915 | /* close out slot */ | |
916 | input_mt_report_slot_state(input_dev, 0, 0); | |
917 | } | |
918 | ||
919 | data->update_input = true; | |
920 | } | |
921 | ||
b9b05a89 | 922 | static int mxt_proc_message(struct mxt_data *data, u8 *message) |
04a79181 | 923 | { |
b9b05a89 ND |
924 | u8 report_id = message[0]; |
925 | ||
926 | if (report_id == MXT_RPTID_NOMSG) | |
927 | return 0; | |
928 | ||
929 | if (report_id == data->T6_reportid) { | |
930 | mxt_proc_t6_messages(data, message); | |
931 | } else if (!data->input_dev) { | |
932 | /* | |
933 | * Do not report events if input device | |
934 | * is not yet registered. | |
935 | */ | |
936 | mxt_dump_message(data, message); | |
b23157dc ND |
937 | } else if (report_id >= data->T9_reportid_min && |
938 | report_id <= data->T9_reportid_max) { | |
b9b05a89 | 939 | mxt_proc_t9_message(data, message); |
b23157dc ND |
940 | } else if (report_id >= data->T100_reportid_min && |
941 | report_id <= data->T100_reportid_max) { | |
942 | mxt_proc_t100_message(data, message); | |
b9b05a89 ND |
943 | } else if (report_id == data->T19_reportid) { |
944 | mxt_input_button(data, message); | |
945 | data->update_input = true; | |
946 | } else { | |
947 | mxt_dump_message(data, message); | |
948 | } | |
949 | ||
950 | return 1; | |
4cf51c38 JS |
951 | } |
952 | ||
9d8dc3e5 | 953 | static int mxt_read_and_process_messages(struct mxt_data *data, u8 count) |
4cf51c38 | 954 | { |
4cf51c38 | 955 | struct device *dev = &data->client->dev; |
b9b05a89 | 956 | int ret; |
9d8dc3e5 ND |
957 | int i; |
958 | u8 num_valid = 0; | |
959 | ||
960 | /* Safety check for msg_buf */ | |
961 | if (count > data->max_reportid) | |
962 | return -EINVAL; | |
4cf51c38 | 963 | |
9d8dc3e5 | 964 | /* Process remaining messages if necessary */ |
b9b05a89 | 965 | ret = __mxt_read_reg(data->client, data->T5_address, |
9d8dc3e5 | 966 | data->T5_msg_size * count, data->msg_buf); |
b9b05a89 | 967 | if (ret) { |
9d8dc3e5 | 968 | dev_err(dev, "Failed to read %u messages (%d)\n", count, ret); |
b9b05a89 ND |
969 | return ret; |
970 | } | |
4cf51c38 | 971 | |
9d8dc3e5 ND |
972 | for (i = 0; i < count; i++) { |
973 | ret = mxt_proc_message(data, | |
974 | data->msg_buf + data->T5_msg_size * i); | |
975 | ||
976 | if (ret == 1) | |
977 | num_valid++; | |
978 | } | |
979 | ||
980 | /* return number of messages read */ | |
981 | return num_valid; | |
b9b05a89 | 982 | } |
4cf51c38 | 983 | |
9d8dc3e5 | 984 | static irqreturn_t mxt_process_messages_t44(struct mxt_data *data) |
b9b05a89 | 985 | { |
9d8dc3e5 | 986 | struct device *dev = &data->client->dev; |
b9b05a89 | 987 | int ret; |
9d8dc3e5 | 988 | u8 count, num_left; |
4cf51c38 | 989 | |
9d8dc3e5 ND |
990 | /* Read T44 and T5 together */ |
991 | ret = __mxt_read_reg(data->client, data->T44_address, | |
992 | data->T5_msg_size + 1, data->msg_buf); | |
993 | if (ret) { | |
994 | dev_err(dev, "Failed to read T44 and T5 (%d)\n", ret); | |
995 | return IRQ_NONE; | |
996 | } | |
997 | ||
998 | count = data->msg_buf[0]; | |
999 | ||
1000 | if (count == 0) { | |
651b4608 ND |
1001 | /* |
1002 | * This condition is caused by the CHG line being configured | |
1003 | * in Mode 0. It results in unnecessary I2C operations but it | |
1004 | * is benign. | |
1005 | */ | |
1006 | dev_dbg(dev, "Interrupt triggered but zero messages\n"); | |
9d8dc3e5 ND |
1007 | return IRQ_NONE; |
1008 | } else if (count > data->max_reportid) { | |
1009 | dev_err(dev, "T44 count %d exceeded max report id\n", count); | |
1010 | count = data->max_reportid; | |
1011 | } | |
1012 | ||
1013 | /* Process first message */ | |
1014 | ret = mxt_proc_message(data, data->msg_buf + 1); | |
1015 | if (ret < 0) { | |
1016 | dev_warn(dev, "Unexpected invalid message\n"); | |
1017 | return IRQ_NONE; | |
1018 | } | |
1019 | ||
1020 | num_left = count - 1; | |
1021 | ||
1022 | /* Process remaining messages if necessary */ | |
1023 | if (num_left) { | |
1024 | ret = mxt_read_and_process_messages(data, num_left); | |
b9b05a89 | 1025 | if (ret < 0) |
9d8dc3e5 ND |
1026 | goto end; |
1027 | else if (ret != num_left) | |
1028 | dev_warn(dev, "Unexpected invalid message\n"); | |
1029 | } | |
1030 | ||
1031 | end: | |
1032 | if (data->update_input) { | |
1033 | mxt_input_sync(data); | |
1034 | data->update_input = false; | |
1035 | } | |
1036 | ||
1037 | return IRQ_HANDLED; | |
1038 | } | |
1039 | ||
1040 | static int mxt_process_messages_until_invalid(struct mxt_data *data) | |
1041 | { | |
1042 | struct device *dev = &data->client->dev; | |
1043 | int count, read; | |
1044 | u8 tries = 2; | |
1045 | ||
1046 | count = data->max_reportid; | |
1047 | ||
1048 | /* Read messages until we force an invalid */ | |
1049 | do { | |
1050 | read = mxt_read_and_process_messages(data, count); | |
1051 | if (read < count) | |
1052 | return 0; | |
1053 | } while (--tries); | |
1054 | ||
1055 | if (data->update_input) { | |
1056 | mxt_input_sync(data); | |
1057 | data->update_input = false; | |
1058 | } | |
1059 | ||
1060 | dev_err(dev, "CHG pin isn't cleared\n"); | |
1061 | return -EBUSY; | |
1062 | } | |
1063 | ||
1064 | static irqreturn_t mxt_process_messages(struct mxt_data *data) | |
1065 | { | |
1066 | int total_handled, num_handled; | |
1067 | u8 count = data->last_message_count; | |
1068 | ||
1069 | if (count < 1 || count > data->max_reportid) | |
1070 | count = 1; | |
1071 | ||
1072 | /* include final invalid message */ | |
1073 | total_handled = mxt_read_and_process_messages(data, count + 1); | |
1074 | if (total_handled < 0) | |
1075 | return IRQ_NONE; | |
1076 | /* if there were invalid messages, then we are done */ | |
1077 | else if (total_handled <= count) | |
1078 | goto update_count; | |
1079 | ||
1080 | /* keep reading two msgs until one is invalid or reportid limit */ | |
1081 | do { | |
1082 | num_handled = mxt_read_and_process_messages(data, 2); | |
1083 | if (num_handled < 0) | |
b9b05a89 | 1084 | return IRQ_NONE; |
9d8dc3e5 ND |
1085 | |
1086 | total_handled += num_handled; | |
1087 | ||
1088 | if (num_handled < 2) | |
1089 | break; | |
1090 | } while (total_handled < data->num_touchids); | |
1091 | ||
1092 | update_count: | |
1093 | data->last_message_count = total_handled; | |
b9b05a89 ND |
1094 | |
1095 | if (data->update_input) { | |
b735fbe0 | 1096 | mxt_input_sync(data); |
b9b05a89 ND |
1097 | data->update_input = false; |
1098 | } | |
64464ae8 | 1099 | |
4cf51c38 JS |
1100 | return IRQ_HANDLED; |
1101 | } | |
1102 | ||
d79e7e47 BL |
1103 | static irqreturn_t mxt_interrupt(int irq, void *dev_id) |
1104 | { | |
1105 | struct mxt_data *data = dev_id; | |
1106 | ||
1107 | if (data->in_bootloader) { | |
1108 | /* bootloader state transition completion */ | |
1109 | complete(&data->bl_completion); | |
1110 | return IRQ_HANDLED; | |
1111 | } | |
1112 | ||
dd24dcf5 ND |
1113 | if (!data->object_table) |
1114 | return IRQ_HANDLED; | |
1115 | ||
9d8dc3e5 ND |
1116 | if (data->T44_address) { |
1117 | return mxt_process_messages_t44(data); | |
1118 | } else { | |
1119 | return mxt_process_messages(data); | |
1120 | } | |
d79e7e47 BL |
1121 | } |
1122 | ||
a4a2ef46 IV |
1123 | static int mxt_t6_command(struct mxt_data *data, u16 cmd_offset, |
1124 | u8 value, bool wait) | |
1125 | { | |
1126 | u16 reg; | |
1127 | u8 command_register; | |
1128 | int timeout_counter = 0; | |
1129 | int ret; | |
1130 | ||
1131 | reg = data->T6_address + cmd_offset; | |
1132 | ||
1133 | ret = mxt_write_reg(data->client, reg, value); | |
1134 | if (ret) | |
1135 | return ret; | |
1136 | ||
1137 | if (!wait) | |
1138 | return 0; | |
1139 | ||
1140 | do { | |
1141 | msleep(20); | |
1142 | ret = __mxt_read_reg(data->client, reg, 1, &command_register); | |
1143 | if (ret) | |
1144 | return ret; | |
1145 | } while (command_register != 0 && timeout_counter++ <= 100); | |
1146 | ||
1147 | if (timeout_counter > 100) { | |
1148 | dev_err(&data->client->dev, "Command failed!\n"); | |
1149 | return -EIO; | |
1150 | } | |
1151 | ||
1152 | return 0; | |
1153 | } | |
1154 | ||
1155 | static int mxt_soft_reset(struct mxt_data *data) | |
1156 | { | |
1157 | struct device *dev = &data->client->dev; | |
1158 | int ret = 0; | |
1159 | ||
1160 | dev_info(dev, "Resetting chip\n"); | |
1161 | ||
1162 | reinit_completion(&data->reset_completion); | |
1163 | ||
1164 | ret = mxt_t6_command(data, MXT_COMMAND_RESET, MXT_RESET_VALUE, false); | |
1165 | if (ret) | |
1166 | return ret; | |
1167 | ||
1168 | ret = mxt_wait_for_completion(data, &data->reset_completion, | |
1169 | MXT_RESET_TIMEOUT); | |
1170 | if (ret) | |
1171 | return ret; | |
1172 | ||
1173 | return 0; | |
1174 | } | |
1175 | ||
c3f78043 ND |
1176 | static void mxt_update_crc(struct mxt_data *data, u8 cmd, u8 value) |
1177 | { | |
1178 | /* | |
1179 | * On failure, CRC is set to 0 and config will always be | |
1180 | * downloaded. | |
1181 | */ | |
1182 | data->config_crc = 0; | |
1183 | reinit_completion(&data->crc_completion); | |
1184 | ||
1185 | mxt_t6_command(data, cmd, value, true); | |
1186 | ||
1187 | /* | |
1188 | * Wait for crc message. On failure, CRC is set to 0 and config will | |
1189 | * always be downloaded. | |
1190 | */ | |
1191 | mxt_wait_for_completion(data, &data->crc_completion, MXT_CRC_TIMEOUT); | |
1192 | } | |
1193 | ||
4ce6fa01 ND |
1194 | static void mxt_calc_crc24(u32 *crc, u8 firstbyte, u8 secondbyte) |
1195 | { | |
1196 | static const unsigned int crcpoly = 0x80001B; | |
1197 | u32 result; | |
1198 | u32 data_word; | |
1199 | ||
1200 | data_word = (secondbyte << 8) | firstbyte; | |
1201 | result = ((*crc << 1) ^ data_word); | |
1202 | ||
1203 | if (result & 0x1000000) | |
1204 | result ^= crcpoly; | |
1205 | ||
1206 | *crc = result; | |
1207 | } | |
1208 | ||
1209 | static u32 mxt_calculate_crc(u8 *base, off_t start_off, off_t end_off) | |
1210 | { | |
1211 | u32 crc = 0; | |
1212 | u8 *ptr = base + start_off; | |
1213 | u8 *last_val = base + end_off - 1; | |
1214 | ||
1215 | if (end_off < start_off) | |
1216 | return -EINVAL; | |
1217 | ||
1218 | while (ptr < last_val) { | |
1219 | mxt_calc_crc24(&crc, *ptr, *(ptr + 1)); | |
1220 | ptr += 2; | |
1221 | } | |
1222 | ||
1223 | /* if len is odd, fill the last byte with 0 */ | |
1224 | if (ptr == last_val) | |
1225 | mxt_calc_crc24(&crc, *ptr, 0); | |
1226 | ||
1227 | /* Mask to 24-bit */ | |
1228 | crc &= 0x00FFFFFF; | |
1229 | ||
1230 | return crc; | |
1231 | } | |
1232 | ||
efdbd7ae DT |
1233 | static int mxt_prepare_cfg_mem(struct mxt_data *data, |
1234 | const struct firmware *cfg, | |
1235 | unsigned int data_pos, | |
1236 | unsigned int cfg_start_ofs, | |
1237 | u8 *config_mem, | |
1238 | size_t config_mem_size) | |
1239 | { | |
1240 | struct device *dev = &data->client->dev; | |
1241 | struct mxt_object *object; | |
1242 | unsigned int type, instance, size, byte_offset; | |
1243 | int offset; | |
1244 | int ret; | |
1245 | int i; | |
1246 | u16 reg; | |
1247 | u8 val; | |
1248 | ||
1249 | while (data_pos < cfg->size) { | |
1250 | /* Read type, instance, length */ | |
1251 | ret = sscanf(cfg->data + data_pos, "%x %x %x%n", | |
1252 | &type, &instance, &size, &offset); | |
1253 | if (ret == 0) { | |
1254 | /* EOF */ | |
1255 | break; | |
1256 | } else if (ret != 3) { | |
1257 | dev_err(dev, "Bad format: failed to parse object\n"); | |
1258 | return -EINVAL; | |
1259 | } | |
1260 | data_pos += offset; | |
1261 | ||
1262 | object = mxt_get_object(data, type); | |
1263 | if (!object) { | |
1264 | /* Skip object */ | |
1265 | for (i = 0; i < size; i++) { | |
1266 | ret = sscanf(cfg->data + data_pos, "%hhx%n", | |
041fa159 DT |
1267 | &val, &offset); |
1268 | if (ret != 1) { | |
1269 | dev_err(dev, "Bad format in T%d at %d\n", | |
1270 | type, i); | |
1271 | return -EINVAL; | |
1272 | } | |
efdbd7ae DT |
1273 | data_pos += offset; |
1274 | } | |
1275 | continue; | |
1276 | } | |
1277 | ||
1278 | if (size > mxt_obj_size(object)) { | |
1279 | /* | |
1280 | * Either we are in fallback mode due to wrong | |
1281 | * config or config from a later fw version, | |
1282 | * or the file is corrupt or hand-edited. | |
1283 | */ | |
1284 | dev_warn(dev, "Discarding %zu byte(s) in T%u\n", | |
1285 | size - mxt_obj_size(object), type); | |
1286 | } else if (mxt_obj_size(object) > size) { | |
1287 | /* | |
1288 | * If firmware is upgraded, new bytes may be added to | |
1289 | * end of objects. It is generally forward compatible | |
1290 | * to zero these bytes - previous behaviour will be | |
1291 | * retained. However this does invalidate the CRC and | |
1292 | * will force fallback mode until the configuration is | |
1293 | * updated. We warn here but do nothing else - the | |
1294 | * malloc has zeroed the entire configuration. | |
1295 | */ | |
1296 | dev_warn(dev, "Zeroing %zu byte(s) in T%d\n", | |
1297 | mxt_obj_size(object) - size, type); | |
1298 | } | |
1299 | ||
1300 | if (instance >= mxt_obj_instances(object)) { | |
1301 | dev_err(dev, "Object instances exceeded!\n"); | |
1302 | return -EINVAL; | |
1303 | } | |
1304 | ||
1305 | reg = object->start_address + mxt_obj_size(object) * instance; | |
1306 | ||
1307 | for (i = 0; i < size; i++) { | |
1308 | ret = sscanf(cfg->data + data_pos, "%hhx%n", | |
1309 | &val, | |
1310 | &offset); | |
1311 | if (ret != 1) { | |
041fa159 DT |
1312 | dev_err(dev, "Bad format in T%d at %d\n", |
1313 | type, i); | |
efdbd7ae DT |
1314 | return -EINVAL; |
1315 | } | |
1316 | data_pos += offset; | |
1317 | ||
1318 | if (i > mxt_obj_size(object)) | |
1319 | continue; | |
1320 | ||
1321 | byte_offset = reg + i - cfg_start_ofs; | |
1322 | ||
041fa159 | 1323 | if (byte_offset >= 0 && byte_offset < config_mem_size) { |
efdbd7ae DT |
1324 | *(config_mem + byte_offset) = val; |
1325 | } else { | |
1326 | dev_err(dev, "Bad object: reg:%d, T%d, ofs=%d\n", | |
1327 | reg, object->type, byte_offset); | |
1328 | return -EINVAL; | |
1329 | } | |
1330 | } | |
1331 | } | |
1332 | ||
1333 | return 0; | |
1334 | } | |
1335 | ||
1336 | static int mxt_upload_cfg_mem(struct mxt_data *data, unsigned int cfg_start, | |
1337 | u8 *config_mem, size_t config_mem_size) | |
1338 | { | |
1339 | unsigned int byte_offset = 0; | |
1340 | int error; | |
1341 | ||
1342 | /* Write configuration as blocks */ | |
1343 | while (byte_offset < config_mem_size) { | |
1344 | unsigned int size = config_mem_size - byte_offset; | |
1345 | ||
1346 | if (size > MXT_MAX_BLOCK_WRITE) | |
1347 | size = MXT_MAX_BLOCK_WRITE; | |
1348 | ||
1349 | error = __mxt_write_reg(data->client, | |
1350 | cfg_start + byte_offset, | |
1351 | size, config_mem + byte_offset); | |
1352 | if (error) { | |
1353 | dev_err(&data->client->dev, | |
1354 | "Config write error, ret=%d\n", error); | |
1355 | return error; | |
1356 | } | |
1357 | ||
1358 | byte_offset += size; | |
1359 | } | |
1360 | ||
1361 | return 0; | |
1362 | } | |
1363 | ||
50a77c65 ND |
1364 | /* |
1365 | * mxt_update_cfg - download configuration to chip | |
1366 | * | |
1367 | * Atmel Raw Config File Format | |
1368 | * | |
1369 | * The first four lines of the raw config file contain: | |
1370 | * 1) Version | |
1371 | * 2) Chip ID Information (first 7 bytes of device memory) | |
1372 | * 3) Chip Information Block 24-bit CRC Checksum | |
1373 | * 4) Chip Configuration 24-bit CRC Checksum | |
1374 | * | |
1375 | * The rest of the file consists of one line per object instance: | |
1376 | * <TYPE> <INSTANCE> <SIZE> <CONTENTS> | |
1377 | * | |
1378 | * <TYPE> - 2-byte object type as hex | |
1379 | * <INSTANCE> - 2-byte object instance number as hex | |
1380 | * <SIZE> - 2-byte object size as hex | |
1381 | * <CONTENTS> - array of <SIZE> 1-byte hex values | |
1382 | */ | |
1383 | static int mxt_update_cfg(struct mxt_data *data, const struct firmware *cfg) | |
4cf51c38 | 1384 | { |
4cf51c38 | 1385 | struct device *dev = &data->client->dev; |
50a77c65 | 1386 | struct mxt_info cfg_info; |
cf94bc09 | 1387 | int ret; |
50a77c65 | 1388 | int offset; |
4ce6fa01 | 1389 | int data_pos; |
50a77c65 | 1390 | int i; |
4ce6fa01 ND |
1391 | int cfg_start_ofs; |
1392 | u32 info_crc, config_crc, calculated_crc; | |
1393 | u8 *config_mem; | |
1394 | size_t config_mem_size; | |
4cf51c38 | 1395 | |
50a77c65 ND |
1396 | mxt_update_crc(data, MXT_COMMAND_REPORTALL, 1); |
1397 | ||
1398 | if (strncmp(cfg->data, MXT_CFG_MAGIC, strlen(MXT_CFG_MAGIC))) { | |
1399 | dev_err(dev, "Unrecognised config file\n"); | |
efdbd7ae | 1400 | return -EINVAL; |
4cf51c38 JS |
1401 | } |
1402 | ||
4ce6fa01 | 1403 | data_pos = strlen(MXT_CFG_MAGIC); |
50a77c65 ND |
1404 | |
1405 | /* Load information block and check */ | |
1406 | for (i = 0; i < sizeof(struct mxt_info); i++) { | |
4ce6fa01 | 1407 | ret = sscanf(cfg->data + data_pos, "%hhx%n", |
50a77c65 ND |
1408 | (unsigned char *)&cfg_info + i, |
1409 | &offset); | |
1410 | if (ret != 1) { | |
1411 | dev_err(dev, "Bad format\n"); | |
efdbd7ae | 1412 | return -EINVAL; |
50a77c65 | 1413 | } |
c3f78043 | 1414 | |
4ce6fa01 | 1415 | data_pos += offset; |
c3f78043 ND |
1416 | } |
1417 | ||
50a77c65 ND |
1418 | if (cfg_info.family_id != data->info.family_id) { |
1419 | dev_err(dev, "Family ID mismatch!\n"); | |
efdbd7ae | 1420 | return -EINVAL; |
50a77c65 | 1421 | } |
c3f78043 | 1422 | |
50a77c65 ND |
1423 | if (cfg_info.variant_id != data->info.variant_id) { |
1424 | dev_err(dev, "Variant ID mismatch!\n"); | |
efdbd7ae | 1425 | return -EINVAL; |
50a77c65 | 1426 | } |
4cf51c38 | 1427 | |
4ce6fa01 ND |
1428 | /* Read CRCs */ |
1429 | ret = sscanf(cfg->data + data_pos, "%x%n", &info_crc, &offset); | |
50a77c65 ND |
1430 | if (ret != 1) { |
1431 | dev_err(dev, "Bad format: failed to parse Info CRC\n"); | |
efdbd7ae | 1432 | return -EINVAL; |
50a77c65 | 1433 | } |
4ce6fa01 | 1434 | data_pos += offset; |
50a77c65 | 1435 | |
4ce6fa01 | 1436 | ret = sscanf(cfg->data + data_pos, "%x%n", &config_crc, &offset); |
50a77c65 ND |
1437 | if (ret != 1) { |
1438 | dev_err(dev, "Bad format: failed to parse Config CRC\n"); | |
efdbd7ae | 1439 | return -EINVAL; |
50a77c65 | 1440 | } |
4ce6fa01 | 1441 | data_pos += offset; |
50a77c65 | 1442 | |
4ce6fa01 ND |
1443 | /* |
1444 | * The Info Block CRC is calculated over mxt_info and the object | |
1445 | * table. If it does not match then we are trying to load the | |
1446 | * configuration from a different chip or firmware version, so | |
1447 | * the configuration CRC is invalid anyway. | |
1448 | */ | |
1449 | if (info_crc == data->info_crc) { | |
1450 | if (config_crc == 0 || data->config_crc == 0) { | |
1451 | dev_info(dev, "CRC zero, attempting to apply config\n"); | |
1452 | } else if (config_crc == data->config_crc) { | |
1453 | dev_dbg(dev, "Config CRC 0x%06X: OK\n", | |
1454 | data->config_crc); | |
efdbd7ae | 1455 | return 0; |
4ce6fa01 ND |
1456 | } else { |
1457 | dev_info(dev, "Config CRC 0x%06X: does not match file 0x%06X\n", | |
1458 | data->config_crc, config_crc); | |
1459 | } | |
1460 | } else { | |
1461 | dev_warn(dev, | |
1462 | "Warning: Info CRC error - device=0x%06X file=0x%06X\n", | |
1463 | data->info_crc, info_crc); | |
50a77c65 ND |
1464 | } |
1465 | ||
4ce6fa01 ND |
1466 | /* Malloc memory to store configuration */ |
1467 | cfg_start_ofs = MXT_OBJECT_START + | |
1468 | data->info.object_num * sizeof(struct mxt_object) + | |
1469 | MXT_INFO_CHECKSUM_SIZE; | |
1470 | config_mem_size = data->mem_size - cfg_start_ofs; | |
1471 | config_mem = kzalloc(config_mem_size, GFP_KERNEL); | |
1472 | if (!config_mem) { | |
1473 | dev_err(dev, "Failed to allocate memory\n"); | |
efdbd7ae | 1474 | return -ENOMEM; |
4ce6fa01 | 1475 | } |
50a77c65 | 1476 | |
efdbd7ae DT |
1477 | ret = mxt_prepare_cfg_mem(data, cfg, data_pos, cfg_start_ofs, |
1478 | config_mem, config_mem_size); | |
1479 | if (ret) | |
1480 | goto release_mem; | |
50a77c65 | 1481 | |
4ce6fa01 ND |
1482 | /* Calculate crc of the received configs (not the raw config file) */ |
1483 | if (data->T7_address < cfg_start_ofs) { | |
1484 | dev_err(dev, "Bad T7 address, T7addr = %x, config offset %x\n", | |
1485 | data->T7_address, cfg_start_ofs); | |
1486 | ret = 0; | |
1487 | goto release_mem; | |
1488 | } | |
50a77c65 | 1489 | |
4ce6fa01 ND |
1490 | calculated_crc = mxt_calculate_crc(config_mem, |
1491 | data->T7_address - cfg_start_ofs, | |
1492 | config_mem_size); | |
1493 | ||
efdbd7ae | 1494 | if (config_crc > 0 && config_crc != calculated_crc) |
4ce6fa01 ND |
1495 | dev_warn(dev, "Config CRC error, calculated=%06X, file=%06X\n", |
1496 | calculated_crc, config_crc); | |
1497 | ||
efdbd7ae DT |
1498 | ret = mxt_upload_cfg_mem(data, cfg_start_ofs, |
1499 | config_mem, config_mem_size); | |
1500 | if (ret) | |
1501 | goto release_mem; | |
4cf51c38 | 1502 | |
c3f78043 ND |
1503 | mxt_update_crc(data, MXT_COMMAND_BACKUPNV, MXT_BACKUP_VALUE); |
1504 | ||
1505 | ret = mxt_soft_reset(data); | |
1506 | if (ret) | |
4ce6fa01 | 1507 | goto release_mem; |
c3f78043 ND |
1508 | |
1509 | dev_info(dev, "Config successfully updated\n"); | |
1510 | ||
4ce6fa01 ND |
1511 | release_mem: |
1512 | kfree(config_mem); | |
50a77c65 | 1513 | return ret; |
4cf51c38 JS |
1514 | } |
1515 | ||
dd24dcf5 ND |
1516 | static int mxt_acquire_irq(struct mxt_data *data) |
1517 | { | |
1518 | int error; | |
1519 | ||
1520 | enable_irq(data->irq); | |
1521 | ||
9d8dc3e5 | 1522 | error = mxt_process_messages_until_invalid(data); |
dd24dcf5 ND |
1523 | if (error) |
1524 | return error; | |
1525 | ||
1526 | return 0; | |
1527 | } | |
1528 | ||
7686b108 | 1529 | static int mxt_get_info(struct mxt_data *data) |
4cf51c38 JS |
1530 | { |
1531 | struct i2c_client *client = data->client; | |
7686b108 | 1532 | struct mxt_info *info = &data->info; |
4cf51c38 | 1533 | int error; |
4cf51c38 | 1534 | |
23003a84 DK |
1535 | /* Read 7-byte info block starting at address 0 */ |
1536 | error = __mxt_read_reg(client, MXT_INFO, sizeof(*info), info); | |
4cf51c38 JS |
1537 | if (error) |
1538 | return error; | |
4cf51c38 JS |
1539 | |
1540 | return 0; | |
1541 | } | |
1542 | ||
58e4aeee | 1543 | static void mxt_free_input_device(struct mxt_data *data) |
5f3f9bc2 | 1544 | { |
58e4aeee SW |
1545 | if (data->input_dev) { |
1546 | input_unregister_device(data->input_dev); | |
1547 | data->input_dev = NULL; | |
1548 | } | |
1549 | } | |
5f3f9bc2 | 1550 | |
58e4aeee SW |
1551 | static void mxt_free_object_table(struct mxt_data *data) |
1552 | { | |
5f3f9bc2 ND |
1553 | kfree(data->object_table); |
1554 | data->object_table = NULL; | |
1555 | kfree(data->msg_buf); | |
1556 | data->msg_buf = NULL; | |
b9b05a89 | 1557 | data->T5_address = 0; |
5f3f9bc2 ND |
1558 | data->T5_msg_size = 0; |
1559 | data->T6_reportid = 0; | |
1560 | data->T7_address = 0; | |
1561 | data->T9_reportid_min = 0; | |
1562 | data->T9_reportid_max = 0; | |
1563 | data->T19_reportid = 0; | |
9d8dc3e5 | 1564 | data->T44_address = 0; |
b23157dc ND |
1565 | data->T100_reportid_min = 0; |
1566 | data->T100_reportid_max = 0; | |
9d8dc3e5 | 1567 | data->max_reportid = 0; |
5f3f9bc2 ND |
1568 | } |
1569 | ||
7686b108 | 1570 | static int mxt_get_object_table(struct mxt_data *data) |
4cf51c38 | 1571 | { |
333e5a9a DK |
1572 | struct i2c_client *client = data->client; |
1573 | size_t table_size; | |
dd24dcf5 | 1574 | struct mxt_object *object_table; |
4cf51c38 JS |
1575 | int error; |
1576 | int i; | |
333e5a9a | 1577 | u8 reportid; |
4ce6fa01 | 1578 | u16 end_address; |
333e5a9a DK |
1579 | |
1580 | table_size = data->info.object_num * sizeof(struct mxt_object); | |
dd24dcf5 ND |
1581 | object_table = kzalloc(table_size, GFP_KERNEL); |
1582 | if (!object_table) { | |
1583 | dev_err(&data->client->dev, "Failed to allocate memory\n"); | |
1584 | return -ENOMEM; | |
1585 | } | |
1586 | ||
333e5a9a | 1587 | error = __mxt_read_reg(client, MXT_OBJECT_START, table_size, |
dd24dcf5 ND |
1588 | object_table); |
1589 | if (error) { | |
1590 | kfree(object_table); | |
333e5a9a | 1591 | return error; |
dd24dcf5 | 1592 | } |
4cf51c38 | 1593 | |
333e5a9a DK |
1594 | /* Valid Report IDs start counting from 1 */ |
1595 | reportid = 1; | |
4ce6fa01 | 1596 | data->mem_size = 0; |
4cf51c38 | 1597 | for (i = 0; i < data->info.object_num; i++) { |
dd24dcf5 | 1598 | struct mxt_object *object = object_table + i; |
333e5a9a | 1599 | u8 min_id, max_id; |
4cf51c38 | 1600 | |
333e5a9a | 1601 | le16_to_cpus(&object->start_address); |
4cf51c38 JS |
1602 | |
1603 | if (object->num_report_ids) { | |
333e5a9a | 1604 | min_id = reportid; |
4cf51c38 | 1605 | reportid += object->num_report_ids * |
1e0c0c5b | 1606 | mxt_obj_instances(object); |
333e5a9a DK |
1607 | max_id = reportid - 1; |
1608 | } else { | |
1609 | min_id = 0; | |
1610 | max_id = 0; | |
1611 | } | |
1612 | ||
1613 | dev_dbg(&data->client->dev, | |
7bed6805 | 1614 | "T%u Start:%u Size:%zu Instances:%zu Report IDs:%u-%u\n", |
1e0c0c5b DK |
1615 | object->type, object->start_address, |
1616 | mxt_obj_size(object), mxt_obj_instances(object), | |
1617 | min_id, max_id); | |
333e5a9a DK |
1618 | |
1619 | switch (object->type) { | |
5f3f9bc2 | 1620 | case MXT_GEN_MESSAGE_T5: |
437d4f37 ND |
1621 | if (data->info.family_id == 0x80 && |
1622 | data->info.version < 0x20) { | |
9d8dc3e5 | 1623 | /* |
437d4f37 ND |
1624 | * On mXT224 firmware versions prior to V2.0 |
1625 | * read and discard unused CRC byte otherwise | |
1626 | * DMA reads are misaligned. | |
9d8dc3e5 ND |
1627 | */ |
1628 | data->T5_msg_size = mxt_obj_size(object); | |
1629 | } else { | |
1630 | /* CRC not enabled, so skip last byte */ | |
1631 | data->T5_msg_size = mxt_obj_size(object) - 1; | |
1632 | } | |
b9b05a89 | 1633 | data->T5_address = object->start_address; |
041fa159 | 1634 | break; |
fdf80421 DK |
1635 | case MXT_GEN_COMMAND_T6: |
1636 | data->T6_reportid = min_id; | |
a4a2ef46 | 1637 | data->T6_address = object->start_address; |
fdf80421 | 1638 | break; |
4ce6fa01 ND |
1639 | case MXT_GEN_POWER_T7: |
1640 | data->T7_address = object->start_address; | |
1641 | break; | |
333e5a9a | 1642 | case MXT_TOUCH_MULTI_T9: |
b23157dc | 1643 | data->multitouch = MXT_TOUCH_MULTI_T9; |
333e5a9a DK |
1644 | data->T9_reportid_min = min_id; |
1645 | data->T9_reportid_max = max_id; | |
9d8dc3e5 ND |
1646 | data->num_touchids = object->num_report_ids |
1647 | * mxt_obj_instances(object); | |
1648 | break; | |
1649 | case MXT_SPT_MESSAGECOUNT_T44: | |
1650 | data->T44_address = object->start_address; | |
333e5a9a | 1651 | break; |
22dfab7f DK |
1652 | case MXT_SPT_GPIOPWM_T19: |
1653 | data->T19_reportid = min_id; | |
1654 | break; | |
b23157dc ND |
1655 | case MXT_TOUCH_MULTITOUCHSCREEN_T100: |
1656 | data->multitouch = MXT_TOUCH_MULTITOUCHSCREEN_T100; | |
1657 | data->T100_reportid_min = min_id; | |
1658 | data->T100_reportid_max = max_id; | |
1659 | /* first two report IDs reserved */ | |
1660 | data->num_touchids = object->num_report_ids - 2; | |
1661 | break; | |
4cf51c38 | 1662 | } |
4ce6fa01 ND |
1663 | |
1664 | end_address = object->start_address | |
1665 | + mxt_obj_size(object) * mxt_obj_instances(object) - 1; | |
1666 | ||
1667 | if (end_address >= data->mem_size) | |
1668 | data->mem_size = end_address + 1; | |
4cf51c38 JS |
1669 | } |
1670 | ||
9d8dc3e5 ND |
1671 | /* Store maximum reportid */ |
1672 | data->max_reportid = reportid; | |
1673 | ||
1674 | /* If T44 exists, T5 position has to be directly after */ | |
1675 | if (data->T44_address && (data->T5_address != data->T44_address + 1)) { | |
1676 | dev_err(&client->dev, "Invalid T44 position\n"); | |
1677 | error = -EINVAL; | |
1678 | goto free_object_table; | |
1679 | } | |
1680 | ||
1681 | data->msg_buf = kcalloc(data->max_reportid, | |
1682 | data->T5_msg_size, GFP_KERNEL); | |
5f3f9bc2 ND |
1683 | if (!data->msg_buf) { |
1684 | dev_err(&client->dev, "Failed to allocate message buffer\n"); | |
1685 | error = -ENOMEM; | |
1686 | goto free_object_table; | |
1687 | } | |
1688 | ||
dd24dcf5 ND |
1689 | data->object_table = object_table; |
1690 | ||
4cf51c38 | 1691 | return 0; |
4cf51c38 | 1692 | |
5f3f9bc2 ND |
1693 | free_object_table: |
1694 | mxt_free_object_table(data); | |
1695 | return error; | |
7d4fa100 DK |
1696 | } |
1697 | ||
61dc1aba ND |
1698 | static int mxt_read_t9_resolution(struct mxt_data *data) |
1699 | { | |
1700 | struct i2c_client *client = data->client; | |
1701 | int error; | |
1702 | struct t9_range range; | |
1703 | unsigned char orient; | |
1704 | struct mxt_object *object; | |
1705 | ||
1706 | object = mxt_get_object(data, MXT_TOUCH_MULTI_T9); | |
1707 | if (!object) | |
1708 | return -EINVAL; | |
1709 | ||
1710 | error = __mxt_read_reg(client, | |
1711 | object->start_address + MXT_T9_RANGE, | |
1712 | sizeof(range), &range); | |
1713 | if (error) | |
1714 | return error; | |
1715 | ||
1716 | le16_to_cpus(&range.x); | |
1717 | le16_to_cpus(&range.y); | |
1718 | ||
1719 | error = __mxt_read_reg(client, | |
1720 | object->start_address + MXT_T9_ORIENT, | |
1721 | 1, &orient); | |
1722 | if (error) | |
1723 | return error; | |
1724 | ||
1725 | /* Handle default values */ | |
1726 | if (range.x == 0) | |
1727 | range.x = 1023; | |
1728 | ||
1729 | if (range.y == 0) | |
1730 | range.y = 1023; | |
1731 | ||
f3889ed1 | 1732 | if (orient & MXT_T9_ORIENT_SWITCH) { |
61dc1aba ND |
1733 | data->max_x = range.y; |
1734 | data->max_y = range.x; | |
1735 | } else { | |
1736 | data->max_x = range.x; | |
1737 | data->max_y = range.y; | |
1738 | } | |
1739 | ||
1740 | dev_dbg(&client->dev, | |
1741 | "Touchscreen size X%uY%u\n", data->max_x, data->max_y); | |
1742 | ||
1743 | return 0; | |
1744 | } | |
1745 | ||
b23157dc ND |
1746 | static int mxt_read_t100_config(struct mxt_data *data) |
1747 | { | |
1748 | struct i2c_client *client = data->client; | |
1749 | int error; | |
1750 | struct mxt_object *object; | |
1751 | u16 range_x, range_y; | |
1752 | u8 cfg, tchaux; | |
1753 | u8 aux; | |
1754 | ||
1755 | object = mxt_get_object(data, MXT_TOUCH_MULTITOUCHSCREEN_T100); | |
1756 | if (!object) | |
1757 | return -EINVAL; | |
1758 | ||
1759 | error = __mxt_read_reg(client, | |
1760 | object->start_address + MXT_T100_XRANGE, | |
1761 | sizeof(range_x), &range_x); | |
1762 | if (error) | |
1763 | return error; | |
1764 | ||
1765 | le16_to_cpus(&range_x); | |
1766 | ||
1767 | error = __mxt_read_reg(client, | |
1768 | object->start_address + MXT_T100_YRANGE, | |
1769 | sizeof(range_y), &range_y); | |
1770 | if (error) | |
1771 | return error; | |
1772 | ||
1773 | le16_to_cpus(&range_y); | |
1774 | ||
1775 | error = __mxt_read_reg(client, | |
1776 | object->start_address + MXT_T100_CFG1, | |
1777 | 1, &cfg); | |
1778 | if (error) | |
1779 | return error; | |
1780 | ||
1781 | error = __mxt_read_reg(client, | |
1782 | object->start_address + MXT_T100_TCHAUX, | |
1783 | 1, &tchaux); | |
1784 | if (error) | |
1785 | return error; | |
1786 | ||
1787 | /* Handle default values */ | |
1788 | if (range_x == 0) | |
1789 | range_x = 1023; | |
1790 | ||
1791 | if (range_y == 0) | |
1792 | range_y = 1023; | |
1793 | ||
1794 | if (cfg & MXT_T100_CFG_SWITCHXY) { | |
1795 | data->max_x = range_y; | |
1796 | data->max_y = range_x; | |
1797 | } else { | |
1798 | data->max_x = range_x; | |
1799 | data->max_y = range_y; | |
1800 | } | |
1801 | ||
1802 | /* allocate aux bytes */ | |
1803 | aux = 6; | |
1804 | ||
1805 | if (tchaux & MXT_T100_TCHAUX_VECT) | |
1806 | data->t100_aux_vect = aux++; | |
1807 | ||
1808 | if (tchaux & MXT_T100_TCHAUX_AMPL) | |
1809 | data->t100_aux_ampl = aux++; | |
1810 | ||
1811 | if (tchaux & MXT_T100_TCHAUX_AREA) | |
1812 | data->t100_aux_area = aux++; | |
1813 | ||
1814 | dev_dbg(&client->dev, | |
1815 | "T100 aux mappings vect:%u ampl:%u area:%u\n", | |
1816 | data->t100_aux_vect, data->t100_aux_ampl, data->t100_aux_area); | |
1817 | ||
1818 | dev_info(&client->dev, | |
1819 | "T100 Touchscreen size X%uY%u\n", data->max_x, data->max_y); | |
1820 | ||
1821 | return 0; | |
1822 | } | |
1823 | ||
7a53d609 ND |
1824 | static int mxt_input_open(struct input_dev *dev); |
1825 | static void mxt_input_close(struct input_dev *dev); | |
1826 | ||
b6d2d328 SS |
1827 | static void mxt_set_up_as_touchpad(struct input_dev *input_dev, |
1828 | struct mxt_data *data) | |
1829 | { | |
1830 | const struct mxt_platform_data *pdata = data->pdata; | |
1831 | int i; | |
1832 | ||
1833 | input_dev->name = "Atmel maXTouch Touchpad"; | |
1834 | ||
1835 | __set_bit(INPUT_PROP_BUTTONPAD, input_dev->propbit); | |
1836 | ||
1837 | input_abs_set_res(input_dev, ABS_X, MXT_PIXELS_PER_MM); | |
1838 | input_abs_set_res(input_dev, ABS_Y, MXT_PIXELS_PER_MM); | |
1839 | input_abs_set_res(input_dev, ABS_MT_POSITION_X, | |
1840 | MXT_PIXELS_PER_MM); | |
1841 | input_abs_set_res(input_dev, ABS_MT_POSITION_Y, | |
1842 | MXT_PIXELS_PER_MM); | |
1843 | ||
1844 | for (i = 0; i < pdata->t19_num_keys; i++) | |
1845 | if (pdata->t19_keymap[i] != KEY_RESERVED) | |
1846 | input_set_capability(input_dev, EV_KEY, | |
1847 | pdata->t19_keymap[i]); | |
1848 | } | |
1849 | ||
b23157dc | 1850 | static int mxt_initialize_input_device(struct mxt_data *data) |
7a53d609 | 1851 | { |
7a53d609 | 1852 | const struct mxt_platform_data *pdata = data->pdata; |
b6d2d328 | 1853 | struct device *dev = &data->client->dev; |
7a53d609 ND |
1854 | struct input_dev *input_dev; |
1855 | int error; | |
1856 | unsigned int num_mt_slots; | |
1857 | unsigned int mt_flags = 0; | |
7a53d609 | 1858 | |
b23157dc ND |
1859 | switch (data->multitouch) { |
1860 | case MXT_TOUCH_MULTI_T9: | |
1861 | num_mt_slots = data->T9_reportid_max - data->T9_reportid_min + 1; | |
1862 | error = mxt_read_t9_resolution(data); | |
1863 | if (error) | |
1864 | dev_warn(dev, "Failed to initialize T9 resolution\n"); | |
1865 | break; | |
1866 | ||
1867 | case MXT_TOUCH_MULTITOUCHSCREEN_T100: | |
1868 | num_mt_slots = data->num_touchids; | |
1869 | error = mxt_read_t100_config(data); | |
1870 | if (error) | |
1871 | dev_warn(dev, "Failed to read T100 config\n"); | |
1872 | break; | |
1873 | ||
1874 | default: | |
1875 | dev_err(dev, "Invalid multitouch object\n"); | |
1876 | return -EINVAL; | |
1877 | } | |
7a53d609 ND |
1878 | |
1879 | input_dev = input_allocate_device(); | |
1880 | if (!input_dev) { | |
1881 | dev_err(dev, "Failed to allocate memory\n"); | |
1882 | return -ENOMEM; | |
1883 | } | |
1884 | ||
1885 | input_dev->name = "Atmel maXTouch Touchscreen"; | |
1886 | input_dev->phys = data->phys; | |
1887 | input_dev->id.bustype = BUS_I2C; | |
1888 | input_dev->dev.parent = dev; | |
1889 | input_dev->open = mxt_input_open; | |
1890 | input_dev->close = mxt_input_close; | |
1891 | ||
b23157dc | 1892 | input_set_capability(input_dev, EV_KEY, BTN_TOUCH); |
7a53d609 | 1893 | |
7a53d609 | 1894 | /* For single touch */ |
b23157dc ND |
1895 | input_set_abs_params(input_dev, ABS_X, 0, data->max_x, 0, 0); |
1896 | input_set_abs_params(input_dev, ABS_Y, 0, data->max_y, 0, 0); | |
1897 | ||
1898 | if (data->multitouch == MXT_TOUCH_MULTI_T9 || | |
1899 | (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 && | |
1900 | data->t100_aux_ampl)) { | |
1901 | input_set_abs_params(input_dev, ABS_PRESSURE, 0, 255, 0, 0); | |
1902 | } | |
7a53d609 | 1903 | |
b6d2d328 SS |
1904 | /* If device has buttons we assume it is a touchpad */ |
1905 | if (pdata->t19_num_keys) { | |
1906 | mxt_set_up_as_touchpad(input_dev, data); | |
1907 | mt_flags |= INPUT_MT_POINTER; | |
1908 | } | |
1909 | ||
7a53d609 | 1910 | /* For multi touch */ |
7a53d609 ND |
1911 | error = input_mt_init_slots(input_dev, num_mt_slots, mt_flags); |
1912 | if (error) { | |
1913 | dev_err(dev, "Error %d initialising slots\n", error); | |
1914 | goto err_free_mem; | |
1915 | } | |
1916 | ||
b23157dc ND |
1917 | if (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100) { |
1918 | input_set_abs_params(input_dev, ABS_MT_TOOL_TYPE, | |
1919 | 0, MT_TOOL_MAX, 0, 0); | |
1920 | input_set_abs_params(input_dev, ABS_MT_DISTANCE, | |
1921 | MXT_DISTANCE_ACTIVE_TOUCH, | |
1922 | MXT_DISTANCE_HOVERING, | |
1923 | 0, 0); | |
1924 | } | |
1925 | ||
7a53d609 ND |
1926 | input_set_abs_params(input_dev, ABS_MT_POSITION_X, |
1927 | 0, data->max_x, 0, 0); | |
1928 | input_set_abs_params(input_dev, ABS_MT_POSITION_Y, | |
1929 | 0, data->max_y, 0, 0); | |
b23157dc ND |
1930 | |
1931 | if (data->multitouch == MXT_TOUCH_MULTI_T9 || | |
1932 | (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 && | |
1933 | data->t100_aux_area)) { | |
1934 | input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR, | |
1935 | 0, MXT_MAX_AREA, 0, 0); | |
1936 | } | |
1937 | ||
1938 | if (data->multitouch == MXT_TOUCH_MULTI_T9 || | |
1939 | (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 && | |
1940 | data->t100_aux_ampl)) { | |
1941 | input_set_abs_params(input_dev, ABS_MT_PRESSURE, | |
1942 | 0, 255, 0, 0); | |
1943 | } | |
1944 | ||
1945 | if (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 && | |
1946 | data->t100_aux_vect) { | |
1947 | input_set_abs_params(input_dev, ABS_MT_ORIENTATION, | |
1948 | 0, 255, 0, 0); | |
1949 | } | |
1950 | ||
1951 | if (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 && | |
1952 | data->t100_aux_ampl) { | |
1953 | input_set_abs_params(input_dev, ABS_MT_PRESSURE, | |
1954 | 0, 255, 0, 0); | |
1955 | } | |
1956 | ||
1957 | if (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 && | |
1958 | data->t100_aux_vect) { | |
1959 | input_set_abs_params(input_dev, ABS_MT_ORIENTATION, | |
1960 | 0, 255, 0, 0); | |
1961 | } | |
7a53d609 ND |
1962 | |
1963 | input_set_drvdata(input_dev, data); | |
1964 | ||
1965 | error = input_register_device(input_dev); | |
1966 | if (error) { | |
1967 | dev_err(dev, "Error %d registering input device\n", error); | |
1968 | goto err_free_mem; | |
1969 | } | |
1970 | ||
1971 | data->input_dev = input_dev; | |
1972 | ||
1973 | return 0; | |
1974 | ||
1975 | err_free_mem: | |
1976 | input_free_device(input_dev); | |
1977 | return error; | |
1978 | } | |
1979 | ||
50a77c65 ND |
1980 | static int mxt_configure_objects(struct mxt_data *data, |
1981 | const struct firmware *cfg); | |
1982 | ||
1983 | static void mxt_config_cb(const struct firmware *cfg, void *ctx) | |
1984 | { | |
1985 | mxt_configure_objects(ctx, cfg); | |
efdbd7ae | 1986 | release_firmware(cfg); |
50a77c65 ND |
1987 | } |
1988 | ||
7686b108 | 1989 | static int mxt_initialize(struct mxt_data *data) |
4cf51c38 JS |
1990 | { |
1991 | struct i2c_client *client = data->client; | |
6cd1ab0f | 1992 | int recovery_attempts = 0; |
4cf51c38 | 1993 | int error; |
4cf51c38 | 1994 | |
6cd1ab0f DT |
1995 | while (1) { |
1996 | error = mxt_get_info(data); | |
1997 | if (!error) | |
1998 | break; | |
1999 | ||
2000 | /* Check bootloader state */ | |
2001 | error = mxt_probe_bootloader(data, false); | |
8efaa5e5 | 2002 | if (error) { |
6cd1ab0f DT |
2003 | dev_info(&client->dev, "Trying alternate bootloader address\n"); |
2004 | error = mxt_probe_bootloader(data, true); | |
2005 | if (error) { | |
8efaa5e5 ND |
2006 | /* Chip is not in appmode or bootloader mode */ |
2007 | return error; | |
2008 | } | |
6cd1ab0f | 2009 | } |
a9fdd1e6 | 2010 | |
6cd1ab0f DT |
2011 | /* OK, we are in bootloader, see if we can recover */ |
2012 | if (++recovery_attempts > 1) { | |
2013 | dev_err(&client->dev, "Could not recover from bootloader mode\n"); | |
2014 | /* | |
2015 | * We can reflash from this state, so do not | |
2016 | * abort initialization. | |
2017 | */ | |
2018 | data->in_bootloader = true; | |
2019 | return 0; | |
8efaa5e5 | 2020 | } |
6cd1ab0f DT |
2021 | |
2022 | /* Attempt to exit bootloader into app mode */ | |
2023 | mxt_send_bootloader_cmd(data, false); | |
2024 | msleep(MXT_FW_RESET_TIME); | |
a9fdd1e6 | 2025 | } |
4cf51c38 | 2026 | |
4cf51c38 | 2027 | /* Get object table information */ |
7686b108 | 2028 | error = mxt_get_object_table(data); |
7bed6805 ND |
2029 | if (error) { |
2030 | dev_err(&client->dev, "Error %d reading object table\n", error); | |
dd24dcf5 | 2031 | return error; |
7bed6805 | 2032 | } |
4cf51c38 | 2033 | |
041fa159 | 2034 | error = mxt_acquire_irq(data); |
dd24dcf5 ND |
2035 | if (error) |
2036 | goto err_free_object_table; | |
2037 | ||
6cd1ab0f DT |
2038 | error = request_firmware_nowait(THIS_MODULE, true, MXT_CFG_NAME, |
2039 | &client->dev, GFP_KERNEL, data, | |
2040 | mxt_config_cb); | |
2041 | if (error) { | |
2042 | dev_err(&client->dev, "Failed to invoke firmware loader: %d\n", | |
2043 | error); | |
2044 | goto err_free_object_table; | |
2045 | } | |
50a77c65 ND |
2046 | |
2047 | return 0; | |
2048 | ||
2049 | err_free_object_table: | |
2050 | mxt_free_object_table(data); | |
2051 | return error; | |
2052 | } | |
2053 | ||
2054 | static int mxt_configure_objects(struct mxt_data *data, | |
2055 | const struct firmware *cfg) | |
2056 | { | |
2057 | struct device *dev = &data->client->dev; | |
2058 | struct mxt_info *info = &data->info; | |
2059 | int error; | |
2060 | ||
2061 | if (cfg) { | |
2062 | error = mxt_update_cfg(data, cfg); | |
2063 | if (error) | |
2064 | dev_warn(dev, "Error %d updating config\n", error); | |
7bed6805 | 2065 | } |
4cf51c38 | 2066 | |
b23157dc ND |
2067 | if (data->multitouch) { |
2068 | error = mxt_initialize_input_device(data); | |
2069 | if (error) | |
2070 | return error; | |
2071 | } else { | |
2072 | dev_warn(dev, "No touch object detected\n"); | |
2073 | } | |
4cf51c38 | 2074 | |
50a77c65 | 2075 | dev_info(dev, |
61dc1aba ND |
2076 | "Family: %u Variant: %u Firmware V%u.%u.%02X Objects: %u\n", |
2077 | info->family_id, info->variant_id, info->version >> 4, | |
2078 | info->version & 0xf, info->build, info->object_num); | |
4cf51c38 JS |
2079 | |
2080 | return 0; | |
2081 | } | |
2082 | ||
b19fc9ec DK |
2083 | /* Firmware Version is returned as Major.Minor.Build */ |
2084 | static ssize_t mxt_fw_version_show(struct device *dev, | |
2085 | struct device_attribute *attr, char *buf) | |
2086 | { | |
2087 | struct mxt_data *data = dev_get_drvdata(dev); | |
2088 | struct mxt_info *info = &data->info; | |
2089 | return scnprintf(buf, PAGE_SIZE, "%u.%u.%02X\n", | |
2090 | info->version >> 4, info->version & 0xf, info->build); | |
2091 | } | |
2092 | ||
2093 | /* Hardware Version is returned as FamilyID.VariantID */ | |
2094 | static ssize_t mxt_hw_version_show(struct device *dev, | |
2095 | struct device_attribute *attr, char *buf) | |
2096 | { | |
2097 | struct mxt_data *data = dev_get_drvdata(dev); | |
2098 | struct mxt_info *info = &data->info; | |
2099 | return scnprintf(buf, PAGE_SIZE, "%u.%u\n", | |
2100 | info->family_id, info->variant_id); | |
2101 | } | |
2102 | ||
794eb67e DK |
2103 | static ssize_t mxt_show_instance(char *buf, int count, |
2104 | struct mxt_object *object, int instance, | |
2105 | const u8 *val) | |
2106 | { | |
2107 | int i; | |
2108 | ||
1e0c0c5b | 2109 | if (mxt_obj_instances(object) > 1) |
794eb67e DK |
2110 | count += scnprintf(buf + count, PAGE_SIZE - count, |
2111 | "Instance %u\n", instance); | |
2112 | ||
1e0c0c5b | 2113 | for (i = 0; i < mxt_obj_size(object); i++) |
794eb67e DK |
2114 | count += scnprintf(buf + count, PAGE_SIZE - count, |
2115 | "\t[%2u]: %02x (%d)\n", i, val[i], val[i]); | |
2116 | count += scnprintf(buf + count, PAGE_SIZE - count, "\n"); | |
2117 | ||
2118 | return count; | |
2119 | } | |
2120 | ||
7686b108 | 2121 | static ssize_t mxt_object_show(struct device *dev, |
4cf51c38 JS |
2122 | struct device_attribute *attr, char *buf) |
2123 | { | |
7686b108 IV |
2124 | struct mxt_data *data = dev_get_drvdata(dev); |
2125 | struct mxt_object *object; | |
4cf51c38 JS |
2126 | int count = 0; |
2127 | int i, j; | |
2128 | int error; | |
43a91d51 | 2129 | u8 *obuf; |
4cf51c38 | 2130 | |
43a91d51 DK |
2131 | /* Pre-allocate buffer large enough to hold max sized object. */ |
2132 | obuf = kmalloc(256, GFP_KERNEL); | |
2133 | if (!obuf) | |
2134 | return -ENOMEM; | |
4cf51c38 | 2135 | |
43a91d51 | 2136 | error = 0; |
4cf51c38 JS |
2137 | for (i = 0; i < data->info.object_num; i++) { |
2138 | object = data->object_table + i; | |
2139 | ||
91630955 | 2140 | if (!mxt_object_readable(object->type)) |
4cf51c38 | 2141 | continue; |
4cf51c38 | 2142 | |
91630955 DK |
2143 | count += scnprintf(buf + count, PAGE_SIZE - count, |
2144 | "T%u:\n", object->type); | |
4cf51c38 | 2145 | |
1e0c0c5b DK |
2146 | for (j = 0; j < mxt_obj_instances(object); j++) { |
2147 | u16 size = mxt_obj_size(object); | |
794eb67e | 2148 | u16 addr = object->start_address + j * size; |
43a91d51 | 2149 | |
794eb67e | 2150 | error = __mxt_read_reg(data->client, addr, size, obuf); |
4cf51c38 | 2151 | if (error) |
794eb67e | 2152 | goto done; |
4cf51c38 | 2153 | |
794eb67e | 2154 | count = mxt_show_instance(buf, count, object, j, obuf); |
4cf51c38 | 2155 | } |
4cf51c38 JS |
2156 | } |
2157 | ||
794eb67e | 2158 | done: |
43a91d51 DK |
2159 | kfree(obuf); |
2160 | return error ?: count; | |
4cf51c38 JS |
2161 | } |
2162 | ||
f2ac6cb9 ND |
2163 | static int mxt_check_firmware_format(struct device *dev, |
2164 | const struct firmware *fw) | |
2165 | { | |
2166 | unsigned int pos = 0; | |
2167 | char c; | |
2168 | ||
2169 | while (pos < fw->size) { | |
2170 | c = *(fw->data + pos); | |
2171 | ||
2172 | if (c < '0' || (c > '9' && c < 'A') || c > 'F') | |
2173 | return 0; | |
2174 | ||
2175 | pos++; | |
2176 | } | |
2177 | ||
2178 | /* | |
2179 | * To convert file try: | |
2180 | * xxd -r -p mXTXXX__APP_VX-X-XX.enc > maxtouch.fw | |
2181 | */ | |
2182 | dev_err(dev, "Aborting: firmware file must be in binary format\n"); | |
2183 | ||
2184 | return -EINVAL; | |
2185 | } | |
2186 | ||
7686b108 | 2187 | static int mxt_load_fw(struct device *dev, const char *fn) |
4cf51c38 | 2188 | { |
7686b108 | 2189 | struct mxt_data *data = dev_get_drvdata(dev); |
4cf51c38 JS |
2190 | const struct firmware *fw = NULL; |
2191 | unsigned int frame_size; | |
2192 | unsigned int pos = 0; | |
f943c74a | 2193 | unsigned int retry = 0; |
f477c758 | 2194 | unsigned int frame = 0; |
4cf51c38 JS |
2195 | int ret; |
2196 | ||
2197 | ret = request_firmware(&fw, fn, dev); | |
2198 | if (ret) { | |
2199 | dev_err(dev, "Unable to open firmware %s\n", fn); | |
2200 | return ret; | |
2201 | } | |
2202 | ||
f2ac6cb9 ND |
2203 | /* Check for incorrect enc file */ |
2204 | ret = mxt_check_firmware_format(dev, fw); | |
2205 | if (ret) | |
2206 | goto release_firmware; | |
2207 | ||
a9fdd1e6 ND |
2208 | if (!data->in_bootloader) { |
2209 | /* Change to the bootloader mode */ | |
2210 | data->in_bootloader = true; | |
d79e7e47 | 2211 | |
a9fdd1e6 ND |
2212 | ret = mxt_t6_command(data, MXT_COMMAND_RESET, |
2213 | MXT_BOOT_VALUE, false); | |
2214 | if (ret) | |
2215 | goto release_firmware; | |
a4a2ef46 | 2216 | |
a9fdd1e6 | 2217 | msleep(MXT_RESET_TIME); |
8efaa5e5 ND |
2218 | |
2219 | /* Do not need to scan since we know family ID */ | |
2220 | ret = mxt_lookup_bootloader_address(data, 0); | |
2221 | if (ret) | |
2222 | goto release_firmware; | |
58e4aeee SW |
2223 | |
2224 | mxt_free_input_device(data); | |
2225 | mxt_free_object_table(data); | |
8efaa5e5 ND |
2226 | } else { |
2227 | enable_irq(data->irq); | |
a9fdd1e6 | 2228 | } |
4cf51c38 | 2229 | |
d79e7e47 BL |
2230 | reinit_completion(&data->bl_completion); |
2231 | ||
385deb96 ND |
2232 | ret = mxt_check_bootloader(data, MXT_WAITING_BOOTLOAD_CMD, false); |
2233 | if (ret) { | |
2234 | /* Bootloader may still be unlocked from previous attempt */ | |
2235 | ret = mxt_check_bootloader(data, MXT_WAITING_FRAME_DATA, false); | |
2236 | if (ret) | |
2237 | goto disable_irq; | |
2238 | } else { | |
2239 | dev_info(dev, "Unlocking bootloader\n"); | |
4cf51c38 | 2240 | |
385deb96 | 2241 | /* Unlock bootloader */ |
8efaa5e5 | 2242 | ret = mxt_send_bootloader_cmd(data, true); |
385deb96 ND |
2243 | if (ret) |
2244 | goto disable_irq; | |
2245 | } | |
4cf51c38 JS |
2246 | |
2247 | while (pos < fw->size) { | |
385deb96 | 2248 | ret = mxt_check_bootloader(data, MXT_WAITING_FRAME_DATA, true); |
4cf51c38 | 2249 | if (ret) |
d79e7e47 | 2250 | goto disable_irq; |
4cf51c38 JS |
2251 | |
2252 | frame_size = ((*(fw->data + pos) << 8) | *(fw->data + pos + 1)); | |
2253 | ||
f943c74a | 2254 | /* Take account of CRC bytes */ |
4cf51c38 JS |
2255 | frame_size += 2; |
2256 | ||
2257 | /* Write one frame to device */ | |
f28a842d ND |
2258 | ret = mxt_bootloader_write(data, fw->data + pos, frame_size); |
2259 | if (ret) | |
2260 | goto disable_irq; | |
4cf51c38 | 2261 | |
385deb96 | 2262 | ret = mxt_check_bootloader(data, MXT_FRAME_CRC_PASS, true); |
f943c74a ND |
2263 | if (ret) { |
2264 | retry++; | |
2265 | ||
2266 | /* Back off by 20ms per retry */ | |
2267 | msleep(retry * 20); | |
4cf51c38 | 2268 | |
f943c74a ND |
2269 | if (retry > 20) { |
2270 | dev_err(dev, "Retry count exceeded\n"); | |
2271 | goto disable_irq; | |
2272 | } | |
2273 | } else { | |
2274 | retry = 0; | |
2275 | pos += frame_size; | |
f477c758 | 2276 | frame++; |
f943c74a | 2277 | } |
4cf51c38 | 2278 | |
f477c758 ND |
2279 | if (frame % 50 == 0) |
2280 | dev_dbg(dev, "Sent %d frames, %d/%zd bytes\n", | |
2281 | frame, pos, fw->size); | |
4cf51c38 JS |
2282 | } |
2283 | ||
a0434b75 | 2284 | /* Wait for flash. */ |
a4a2ef46 IV |
2285 | ret = mxt_wait_for_completion(data, &data->bl_completion, |
2286 | MXT_FW_RESET_TIME); | |
a0434b75 BL |
2287 | if (ret) |
2288 | goto disable_irq; | |
2289 | ||
f477c758 ND |
2290 | dev_dbg(dev, "Sent %d frames, %d bytes\n", frame, pos); |
2291 | ||
a0434b75 BL |
2292 | /* |
2293 | * Wait for device to reset. Some bootloader versions do not assert | |
2294 | * the CHG line after bootloading has finished, so ignore potential | |
2295 | * errors. | |
2296 | */ | |
a4a2ef46 | 2297 | mxt_wait_for_completion(data, &data->bl_completion, MXT_FW_RESET_TIME); |
a0434b75 | 2298 | |
d79e7e47 BL |
2299 | data->in_bootloader = false; |
2300 | ||
2301 | disable_irq: | |
2302 | disable_irq(data->irq); | |
a4a2ef46 | 2303 | release_firmware: |
4cf51c38 | 2304 | release_firmware(fw); |
4cf51c38 JS |
2305 | return ret; |
2306 | } | |
2307 | ||
7686b108 | 2308 | static ssize_t mxt_update_fw_store(struct device *dev, |
4cf51c38 JS |
2309 | struct device_attribute *attr, |
2310 | const char *buf, size_t count) | |
2311 | { | |
7686b108 | 2312 | struct mxt_data *data = dev_get_drvdata(dev); |
4cf51c38 JS |
2313 | int error; |
2314 | ||
7686b108 | 2315 | error = mxt_load_fw(dev, MXT_FW_NAME); |
4cf51c38 JS |
2316 | if (error) { |
2317 | dev_err(dev, "The firmware update failed(%d)\n", error); | |
2318 | count = error; | |
2319 | } else { | |
7bed6805 ND |
2320 | dev_info(dev, "The firmware update succeeded\n"); |
2321 | ||
dd24dcf5 | 2322 | error = mxt_initialize(data); |
d79e7e47 BL |
2323 | if (error) |
2324 | return error; | |
2325 | } | |
08960a07 | 2326 | |
4cf51c38 JS |
2327 | return count; |
2328 | } | |
2329 | ||
b19fc9ec DK |
2330 | static DEVICE_ATTR(fw_version, S_IRUGO, mxt_fw_version_show, NULL); |
2331 | static DEVICE_ATTR(hw_version, S_IRUGO, mxt_hw_version_show, NULL); | |
71b3e938 DK |
2332 | static DEVICE_ATTR(object, S_IRUGO, mxt_object_show, NULL); |
2333 | static DEVICE_ATTR(update_fw, S_IWUSR, NULL, mxt_update_fw_store); | |
4cf51c38 | 2334 | |
7686b108 | 2335 | static struct attribute *mxt_attrs[] = { |
b19fc9ec DK |
2336 | &dev_attr_fw_version.attr, |
2337 | &dev_attr_hw_version.attr, | |
4cf51c38 JS |
2338 | &dev_attr_object.attr, |
2339 | &dev_attr_update_fw.attr, | |
2340 | NULL | |
2341 | }; | |
2342 | ||
7686b108 IV |
2343 | static const struct attribute_group mxt_attr_group = { |
2344 | .attrs = mxt_attrs, | |
4cf51c38 JS |
2345 | }; |
2346 | ||
7686b108 | 2347 | static void mxt_start(struct mxt_data *data) |
4cf51c38 | 2348 | { |
7f405483 | 2349 | /* Touch enable */ |
b23157dc | 2350 | mxt_write_object(data, data->multitouch, MXT_TOUCH_CTRL, 0x83); |
4cf51c38 JS |
2351 | } |
2352 | ||
7686b108 | 2353 | static void mxt_stop(struct mxt_data *data) |
4cf51c38 | 2354 | { |
7f405483 | 2355 | /* Touch disable */ |
b23157dc | 2356 | mxt_write_object(data, data->multitouch, MXT_TOUCH_CTRL, 0); |
4cf51c38 JS |
2357 | } |
2358 | ||
7686b108 | 2359 | static int mxt_input_open(struct input_dev *dev) |
4cf51c38 | 2360 | { |
7686b108 | 2361 | struct mxt_data *data = input_get_drvdata(dev); |
4cf51c38 | 2362 | |
7686b108 | 2363 | mxt_start(data); |
4cf51c38 JS |
2364 | |
2365 | return 0; | |
2366 | } | |
2367 | ||
7686b108 | 2368 | static void mxt_input_close(struct input_dev *dev) |
4cf51c38 | 2369 | { |
7686b108 | 2370 | struct mxt_data *data = input_get_drvdata(dev); |
4cf51c38 | 2371 | |
7686b108 | 2372 | mxt_stop(data); |
4cf51c38 JS |
2373 | } |
2374 | ||
78188be3 | 2375 | #ifdef CONFIG_OF |
4f8d8088 | 2376 | static const struct mxt_platform_data *mxt_parse_dt(struct i2c_client *client) |
78188be3 SW |
2377 | { |
2378 | struct mxt_platform_data *pdata; | |
2379 | u32 *keymap; | |
2380 | u32 keycode; | |
2381 | int proplen, i, ret; | |
2382 | ||
2383 | if (!client->dev.of_node) | |
4f8d8088 | 2384 | return ERR_PTR(-ENOENT); |
78188be3 SW |
2385 | |
2386 | pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL); | |
2387 | if (!pdata) | |
2388 | return ERR_PTR(-ENOMEM); | |
2389 | ||
2390 | if (of_find_property(client->dev.of_node, "linux,gpio-keymap", | |
2391 | &proplen)) { | |
2392 | pdata->t19_num_keys = proplen / sizeof(u32); | |
2393 | ||
2394 | keymap = devm_kzalloc(&client->dev, | |
2395 | pdata->t19_num_keys * sizeof(keymap[0]), | |
2396 | GFP_KERNEL); | |
2397 | if (!keymap) | |
2398 | return ERR_PTR(-ENOMEM); | |
2399 | ||
2400 | for (i = 0; i < pdata->t19_num_keys; i++) { | |
2401 | ret = of_property_read_u32_index(client->dev.of_node, | |
2402 | "linux,gpio-keymap", i, &keycode); | |
2403 | if (ret) | |
2404 | keycode = KEY_RESERVED; | |
2405 | ||
2406 | keymap[i] = keycode; | |
2407 | } | |
2408 | ||
2409 | pdata->t19_keymap = keymap; | |
2410 | } | |
2411 | ||
2412 | return pdata; | |
2413 | } | |
2414 | #else | |
4f8d8088 | 2415 | static const struct mxt_platform_data *mxt_parse_dt(struct i2c_client *client) |
78188be3 | 2416 | { |
4f8d8088 DT |
2417 | return ERR_PTR(-ENOENT); |
2418 | } | |
2419 | #endif | |
2420 | ||
2421 | #ifdef CONFIG_ACPI | |
2422 | ||
2423 | struct mxt_acpi_platform_data { | |
2424 | const char *hid; | |
2425 | struct mxt_platform_data pdata; | |
2426 | }; | |
2427 | ||
2428 | static unsigned int samus_touchpad_buttons[] = { | |
2429 | KEY_RESERVED, | |
2430 | KEY_RESERVED, | |
2431 | KEY_RESERVED, | |
2432 | BTN_LEFT | |
2433 | }; | |
2434 | ||
2435 | static struct mxt_acpi_platform_data samus_platform_data[] = { | |
2436 | { | |
2437 | /* Touchpad */ | |
2438 | .hid = "ATML0000", | |
2439 | .pdata = { | |
2440 | .t19_num_keys = ARRAY_SIZE(samus_touchpad_buttons), | |
2441 | .t19_keymap = samus_touchpad_buttons, | |
2442 | }, | |
2443 | }, | |
2444 | { | |
2445 | /* Touchscreen */ | |
2446 | .hid = "ATML0001", | |
2447 | }, | |
2448 | { } | |
2449 | }; | |
2450 | ||
2451 | static const struct dmi_system_id mxt_dmi_table[] = { | |
2452 | { | |
2453 | /* 2015 Google Pixel */ | |
2454 | .ident = "Chromebook Pixel 2", | |
2455 | .matches = { | |
2456 | DMI_MATCH(DMI_SYS_VENDOR, "GOOGLE"), | |
2457 | DMI_MATCH(DMI_PRODUCT_NAME, "Samus"), | |
2458 | }, | |
2459 | .driver_data = samus_platform_data, | |
2460 | }, | |
2461 | { } | |
2462 | }; | |
2463 | ||
2464 | static const struct mxt_platform_data *mxt_parse_acpi(struct i2c_client *client) | |
2465 | { | |
2466 | struct acpi_device *adev; | |
2467 | const struct dmi_system_id *system_id; | |
2468 | const struct mxt_acpi_platform_data *acpi_pdata; | |
2469 | ||
2470 | /* | |
2471 | * Ignore ACPI devices representing bootloader mode. | |
2472 | * | |
2473 | * This is a bit of a hack: Google Chromebook BIOS creates ACPI | |
2474 | * devices for both application and bootloader modes, but we are | |
2475 | * interested in application mode only (if device is in bootloader | |
2476 | * mode we'll end up switching into application anyway). So far | |
2477 | * application mode addresses were all above 0x40, so we'll use it | |
2478 | * as a threshold. | |
2479 | */ | |
2480 | if (client->addr < 0x40) | |
2481 | return ERR_PTR(-ENXIO); | |
2482 | ||
2483 | adev = ACPI_COMPANION(&client->dev); | |
2484 | if (!adev) | |
2485 | return ERR_PTR(-ENOENT); | |
2486 | ||
2487 | system_id = dmi_first_match(mxt_dmi_table); | |
2488 | if (!system_id) | |
2489 | return ERR_PTR(-ENOENT); | |
2490 | ||
2491 | acpi_pdata = system_id->driver_data; | |
2492 | if (!acpi_pdata) | |
2493 | return ERR_PTR(-ENOENT); | |
2494 | ||
2495 | while (acpi_pdata->hid) { | |
2496 | if (!strcmp(acpi_device_hid(adev), acpi_pdata->hid)) | |
2497 | return &acpi_pdata->pdata; | |
2498 | ||
2499 | acpi_pdata++; | |
2500 | } | |
2501 | ||
2502 | return ERR_PTR(-ENOENT); | |
2503 | } | |
2504 | #else | |
2505 | static const struct mxt_platform_data *mxt_parse_acpi(struct i2c_client *client) | |
2506 | { | |
2507 | return ERR_PTR(-ENOENT); | |
78188be3 SW |
2508 | } |
2509 | #endif | |
2510 | ||
4f8d8088 DT |
2511 | static const struct mxt_platform_data * |
2512 | mxt_get_platform_data(struct i2c_client *client) | |
2513 | { | |
2514 | const struct mxt_platform_data *pdata; | |
2515 | ||
2516 | pdata = dev_get_platdata(&client->dev); | |
2517 | if (pdata) | |
2518 | return pdata; | |
2519 | ||
2520 | pdata = mxt_parse_dt(client); | |
2521 | if (!IS_ERR(pdata) || PTR_ERR(pdata) != -ENOENT) | |
2522 | return pdata; | |
2523 | ||
2524 | pdata = mxt_parse_acpi(client); | |
2525 | if (!IS_ERR(pdata) || PTR_ERR(pdata) != -ENOENT) | |
2526 | return pdata; | |
2527 | ||
2528 | dev_err(&client->dev, "No platform data specified\n"); | |
2529 | return ERR_PTR(-EINVAL); | |
2530 | } | |
2531 | ||
78188be3 | 2532 | static int mxt_probe(struct i2c_client *client, const struct i2c_device_id *id) |
4cf51c38 | 2533 | { |
7686b108 | 2534 | struct mxt_data *data; |
78188be3 | 2535 | const struct mxt_platform_data *pdata; |
4cf51c38 JS |
2536 | int error; |
2537 | ||
4f8d8088 DT |
2538 | pdata = mxt_get_platform_data(client); |
2539 | if (IS_ERR(pdata)) | |
2540 | return PTR_ERR(pdata); | |
4cf51c38 | 2541 | |
7686b108 | 2542 | data = kzalloc(sizeof(struct mxt_data), GFP_KERNEL); |
7a53d609 | 2543 | if (!data) { |
4cf51c38 | 2544 | dev_err(&client->dev, "Failed to allocate memory\n"); |
7a53d609 | 2545 | return -ENOMEM; |
4cf51c38 JS |
2546 | } |
2547 | ||
ec02ac2b DK |
2548 | snprintf(data->phys, sizeof(data->phys), "i2c-%u-%04x/input0", |
2549 | client->adapter->nr, client->addr); | |
22dfab7f | 2550 | |
910d8051 | 2551 | data->client = client; |
910d8051 JS |
2552 | data->pdata = pdata; |
2553 | data->irq = client->irq; | |
7a53d609 | 2554 | i2c_set_clientdata(client, data); |
910d8051 | 2555 | |
d79e7e47 | 2556 | init_completion(&data->bl_completion); |
a4a2ef46 | 2557 | init_completion(&data->reset_completion); |
c3f78043 | 2558 | init_completion(&data->crc_completion); |
d79e7e47 | 2559 | |
dd24dcf5 ND |
2560 | error = request_threaded_irq(client->irq, NULL, mxt_interrupt, |
2561 | pdata->irqflags | IRQF_ONESHOT, | |
2562 | client->name, data); | |
2563 | if (error) { | |
2564 | dev_err(&client->dev, "Failed to register interrupt\n"); | |
2565 | goto err_free_mem; | |
2566 | } | |
2567 | ||
2568 | disable_irq(client->irq); | |
2569 | ||
cb159115 DK |
2570 | error = mxt_initialize(data); |
2571 | if (error) | |
7a53d609 | 2572 | goto err_free_irq; |
4cf51c38 | 2573 | |
7686b108 | 2574 | error = sysfs_create_group(&client->dev.kobj, &mxt_attr_group); |
7bed6805 ND |
2575 | if (error) { |
2576 | dev_err(&client->dev, "Failure %d creating sysfs group\n", | |
2577 | error); | |
7a53d609 | 2578 | goto err_free_object; |
7bed6805 | 2579 | } |
4cf51c38 JS |
2580 | |
2581 | return 0; | |
2582 | ||
4cf51c38 | 2583 | err_free_object: |
58e4aeee | 2584 | mxt_free_input_device(data); |
5f3f9bc2 | 2585 | mxt_free_object_table(data); |
dd24dcf5 ND |
2586 | err_free_irq: |
2587 | free_irq(client->irq, data); | |
4cf51c38 | 2588 | err_free_mem: |
4cf51c38 JS |
2589 | kfree(data); |
2590 | return error; | |
2591 | } | |
2592 | ||
e2619cf7 | 2593 | static int mxt_remove(struct i2c_client *client) |
4cf51c38 | 2594 | { |
7686b108 | 2595 | struct mxt_data *data = i2c_get_clientdata(client); |
4cf51c38 | 2596 | |
7686b108 | 2597 | sysfs_remove_group(&client->dev.kobj, &mxt_attr_group); |
4cf51c38 | 2598 | free_irq(data->irq, data); |
58e4aeee | 2599 | mxt_free_input_device(data); |
5f3f9bc2 | 2600 | mxt_free_object_table(data); |
4cf51c38 JS |
2601 | kfree(data); |
2602 | ||
2603 | return 0; | |
2604 | } | |
2605 | ||
02b6a58b | 2606 | static int __maybe_unused mxt_suspend(struct device *dev) |
4cf51c38 | 2607 | { |
8b5fce06 | 2608 | struct i2c_client *client = to_i2c_client(dev); |
7686b108 | 2609 | struct mxt_data *data = i2c_get_clientdata(client); |
4cf51c38 JS |
2610 | struct input_dev *input_dev = data->input_dev; |
2611 | ||
2612 | mutex_lock(&input_dev->mutex); | |
2613 | ||
2614 | if (input_dev->users) | |
7686b108 | 2615 | mxt_stop(data); |
4cf51c38 JS |
2616 | |
2617 | mutex_unlock(&input_dev->mutex); | |
2618 | ||
2619 | return 0; | |
2620 | } | |
2621 | ||
02b6a58b | 2622 | static int __maybe_unused mxt_resume(struct device *dev) |
4cf51c38 | 2623 | { |
8b5fce06 | 2624 | struct i2c_client *client = to_i2c_client(dev); |
7686b108 | 2625 | struct mxt_data *data = i2c_get_clientdata(client); |
4cf51c38 JS |
2626 | struct input_dev *input_dev = data->input_dev; |
2627 | ||
7f405483 LT |
2628 | mxt_soft_reset(data); |
2629 | ||
4cf51c38 JS |
2630 | mutex_lock(&input_dev->mutex); |
2631 | ||
2632 | if (input_dev->users) | |
7686b108 | 2633 | mxt_start(data); |
4cf51c38 JS |
2634 | |
2635 | mutex_unlock(&input_dev->mutex); | |
2636 | ||
2637 | return 0; | |
2638 | } | |
4cf51c38 | 2639 | |
3a73c816 DK |
2640 | static SIMPLE_DEV_PM_OPS(mxt_pm_ops, mxt_suspend, mxt_resume); |
2641 | ||
78188be3 SW |
2642 | static const struct of_device_id mxt_of_match[] = { |
2643 | { .compatible = "atmel,maxtouch", }, | |
2644 | {}, | |
2645 | }; | |
2646 | MODULE_DEVICE_TABLE(of, mxt_of_match); | |
2647 | ||
4f8d8088 DT |
2648 | #ifdef CONFIG_ACPI |
2649 | static const struct acpi_device_id mxt_acpi_id[] = { | |
2650 | { "ATML0000", 0 }, /* Touchpad */ | |
2651 | { "ATML0001", 0 }, /* Touchscreen */ | |
2652 | { } | |
2653 | }; | |
2654 | MODULE_DEVICE_TABLE(acpi, mxt_acpi_id); | |
2655 | #endif | |
2656 | ||
7686b108 | 2657 | static const struct i2c_device_id mxt_id[] = { |
4cf51c38 | 2658 | { "qt602240_ts", 0 }, |
7686b108 | 2659 | { "atmel_mxt_ts", 0 }, |
22dfab7f | 2660 | { "atmel_mxt_tp", 0 }, |
46ee2a05 | 2661 | { "mXT224", 0 }, |
4cf51c38 JS |
2662 | { } |
2663 | }; | |
7686b108 | 2664 | MODULE_DEVICE_TABLE(i2c, mxt_id); |
4cf51c38 | 2665 | |
7686b108 | 2666 | static struct i2c_driver mxt_driver = { |
4cf51c38 | 2667 | .driver = { |
7686b108 | 2668 | .name = "atmel_mxt_ts", |
4cf51c38 | 2669 | .owner = THIS_MODULE, |
78188be3 | 2670 | .of_match_table = of_match_ptr(mxt_of_match), |
4f8d8088 | 2671 | .acpi_match_table = ACPI_PTR(mxt_acpi_id), |
7686b108 | 2672 | .pm = &mxt_pm_ops, |
4cf51c38 | 2673 | }, |
7686b108 | 2674 | .probe = mxt_probe, |
1cb0aa88 | 2675 | .remove = mxt_remove, |
7686b108 | 2676 | .id_table = mxt_id, |
4cf51c38 JS |
2677 | }; |
2678 | ||
1b92c1cf | 2679 | module_i2c_driver(mxt_driver); |
4cf51c38 JS |
2680 | |
2681 | /* Module information */ | |
2682 | MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>"); | |
7686b108 | 2683 | MODULE_DESCRIPTION("Atmel maXTouch Touchscreen driver"); |
4cf51c38 | 2684 | MODULE_LICENSE("GPL"); |