Commit | Line | Data |
---|---|---|
4cf51c38 | 1 | /* |
7686b108 | 2 | * Atmel maXTouch Touchscreen driver |
4cf51c38 JS |
3 | * |
4 | * Copyright (C) 2010 Samsung Electronics Co.Ltd | |
50a77c65 | 5 | * Copyright (C) 2011-2014 Atmel Corporation |
1e0c0c5b DK |
6 | * Copyright (C) 2012 Google, Inc. |
7 | * | |
4cf51c38 JS |
8 | * Author: Joonyoung Shim <jy0922.shim@samsung.com> |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify it | |
11 | * under the terms of the GNU General Public License as published by the | |
12 | * Free Software Foundation; either version 2 of the License, or (at your | |
13 | * option) any later version. | |
14 | * | |
15 | */ | |
16 | ||
4f8d8088 DT |
17 | #include <linux/acpi.h> |
18 | #include <linux/dmi.h> | |
4cf51c38 | 19 | #include <linux/module.h> |
d79e7e47 BL |
20 | #include <linux/init.h> |
21 | #include <linux/completion.h> | |
4cf51c38 JS |
22 | #include <linux/delay.h> |
23 | #include <linux/firmware.h> | |
24 | #include <linux/i2c.h> | |
7f3884f7 | 25 | #include <linux/platform_data/atmel_mxt_ts.h> |
8b86c1c2 | 26 | #include <linux/input/mt.h> |
4cf51c38 | 27 | #include <linux/interrupt.h> |
78188be3 | 28 | #include <linux/of.h> |
4cf51c38 | 29 | #include <linux/slab.h> |
b23157dc | 30 | #include <asm/unaligned.h> |
4cf51c38 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 */ |
7f3884f7 ND |
106 | struct t7_config { |
107 | u8 idle; | |
108 | u8 active; | |
109 | } __packed; | |
110 | ||
111 | #define MXT_POWER_CFG_RUN 0 | |
112 | #define MXT_POWER_CFG_DEEPSLEEP 1 | |
7686b108 | 113 | |
81c88a71 | 114 | /* MXT_GEN_ACQUIRE_T8 field */ |
7686b108 IV |
115 | #define MXT_ACQUIRE_CHRGTIME 0 |
116 | #define MXT_ACQUIRE_TCHDRIFT 2 | |
117 | #define MXT_ACQUIRE_DRIFTST 3 | |
118 | #define MXT_ACQUIRE_TCHAUTOCAL 4 | |
119 | #define MXT_ACQUIRE_SYNC 5 | |
120 | #define MXT_ACQUIRE_ATCHCALST 6 | |
121 | #define MXT_ACQUIRE_ATCHCALSTHR 7 | |
122 | ||
81c88a71 | 123 | /* MXT_TOUCH_MULTI_T9 field */ |
7f3884f7 | 124 | #define MXT_T9_CTRL 0 |
61dc1aba ND |
125 | #define MXT_T9_ORIENT 9 |
126 | #define MXT_T9_RANGE 18 | |
127 | ||
f3889ed1 ND |
128 | /* MXT_TOUCH_MULTI_T9 status */ |
129 | #define MXT_T9_UNGRIP (1 << 0) | |
130 | #define MXT_T9_SUPPRESS (1 << 1) | |
131 | #define MXT_T9_AMP (1 << 2) | |
132 | #define MXT_T9_VECTOR (1 << 3) | |
133 | #define MXT_T9_MOVE (1 << 4) | |
134 | #define MXT_T9_RELEASE (1 << 5) | |
135 | #define MXT_T9_PRESS (1 << 6) | |
136 | #define MXT_T9_DETECT (1 << 7) | |
137 | ||
61dc1aba ND |
138 | struct t9_range { |
139 | u16 x; | |
140 | u16 y; | |
141 | } __packed; | |
142 | ||
f3889ed1 ND |
143 | /* MXT_TOUCH_MULTI_T9 orient */ |
144 | #define MXT_T9_ORIENT_SWITCH (1 << 0) | |
7686b108 | 145 | |
81c88a71 | 146 | /* MXT_PROCI_GRIPFACE_T20 field */ |
7686b108 IV |
147 | #define MXT_GRIPFACE_CTRL 0 |
148 | #define MXT_GRIPFACE_XLOGRIP 1 | |
149 | #define MXT_GRIPFACE_XHIGRIP 2 | |
150 | #define MXT_GRIPFACE_YLOGRIP 3 | |
151 | #define MXT_GRIPFACE_YHIGRIP 4 | |
152 | #define MXT_GRIPFACE_MAXTCHS 5 | |
153 | #define MXT_GRIPFACE_SZTHR1 7 | |
154 | #define MXT_GRIPFACE_SZTHR2 8 | |
155 | #define MXT_GRIPFACE_SHPTHR1 9 | |
156 | #define MXT_GRIPFACE_SHPTHR2 10 | |
157 | #define MXT_GRIPFACE_SUPEXTTO 11 | |
158 | ||
159 | /* MXT_PROCI_NOISE field */ | |
160 | #define MXT_NOISE_CTRL 0 | |
161 | #define MXT_NOISE_OUTFLEN 1 | |
162 | #define MXT_NOISE_GCAFUL_LSB 3 | |
163 | #define MXT_NOISE_GCAFUL_MSB 4 | |
164 | #define MXT_NOISE_GCAFLL_LSB 5 | |
165 | #define MXT_NOISE_GCAFLL_MSB 6 | |
166 | #define MXT_NOISE_ACTVGCAFVALID 7 | |
167 | #define MXT_NOISE_NOISETHR 8 | |
168 | #define MXT_NOISE_FREQHOPSCALE 10 | |
169 | #define MXT_NOISE_FREQ0 11 | |
170 | #define MXT_NOISE_FREQ1 12 | |
171 | #define MXT_NOISE_FREQ2 13 | |
172 | #define MXT_NOISE_FREQ3 14 | |
173 | #define MXT_NOISE_FREQ4 15 | |
174 | #define MXT_NOISE_IDLEGCAFVALID 16 | |
175 | ||
81c88a71 | 176 | /* MXT_SPT_COMMSCONFIG_T18 */ |
7686b108 IV |
177 | #define MXT_COMMS_CTRL 0 |
178 | #define MXT_COMMS_CMD 1 | |
179 | ||
81c88a71 | 180 | /* MXT_SPT_CTECONFIG_T28 field */ |
7686b108 IV |
181 | #define MXT_CTE_CTRL 0 |
182 | #define MXT_CTE_CMD 1 | |
183 | #define MXT_CTE_MODE 2 | |
184 | #define MXT_CTE_IDLEGCAFDEPTH 3 | |
185 | #define MXT_CTE_ACTVGCAFDEPTH 4 | |
979a72da | 186 | #define MXT_CTE_VOLTAGE 5 |
7686b108 IV |
187 | |
188 | #define MXT_VOLTAGE_DEFAULT 2700000 | |
189 | #define MXT_VOLTAGE_STEP 10000 | |
190 | ||
81c88a71 | 191 | /* Define for MXT_GEN_COMMAND_T6 */ |
7686b108 | 192 | #define MXT_BOOT_VALUE 0xa5 |
a4a2ef46 | 193 | #define MXT_RESET_VALUE 0x01 |
7686b108 | 194 | #define MXT_BACKUP_VALUE 0x55 |
a4a2ef46 | 195 | |
b23157dc ND |
196 | /* T100 Multiple Touch Touchscreen */ |
197 | #define MXT_T100_CTRL 0 | |
198 | #define MXT_T100_CFG1 1 | |
199 | #define MXT_T100_TCHAUX 3 | |
200 | #define MXT_T100_XRANGE 13 | |
201 | #define MXT_T100_YRANGE 24 | |
202 | ||
203 | #define MXT_T100_CFG_SWITCHXY BIT(5) | |
204 | ||
205 | #define MXT_T100_TCHAUX_VECT BIT(0) | |
206 | #define MXT_T100_TCHAUX_AMPL BIT(1) | |
207 | #define MXT_T100_TCHAUX_AREA BIT(2) | |
208 | ||
209 | #define MXT_T100_DETECT BIT(7) | |
210 | #define MXT_T100_TYPE_MASK 0x70 | |
211 | ||
212 | enum t100_type { | |
213 | MXT_T100_TYPE_FINGER = 1, | |
214 | MXT_T100_TYPE_PASSIVE_STYLUS = 2, | |
215 | MXT_T100_TYPE_HOVERING_FINGER = 4, | |
216 | MXT_T100_TYPE_GLOVE = 5, | |
217 | MXT_T100_TYPE_LARGE_TOUCH = 6, | |
218 | }; | |
219 | ||
220 | #define MXT_DISTANCE_ACTIVE_TOUCH 0 | |
221 | #define MXT_DISTANCE_HOVERING 1 | |
222 | ||
223 | #define MXT_TOUCH_MAJOR_DEFAULT 1 | |
224 | #define MXT_PRESSURE_DEFAULT 1 | |
225 | ||
a4a2ef46 | 226 | /* Delay times */ |
8343bce1 LT |
227 | #define MXT_BACKUP_TIME 50 /* msec */ |
228 | #define MXT_RESET_TIME 200 /* msec */ | |
a4a2ef46 | 229 | #define MXT_RESET_TIMEOUT 3000 /* msec */ |
c3f78043 | 230 | #define MXT_CRC_TIMEOUT 1000 /* msec */ |
a0434b75 BL |
231 | #define MXT_FW_RESET_TIME 3000 /* msec */ |
232 | #define MXT_FW_CHG_TIMEOUT 300 /* msec */ | |
4cf51c38 JS |
233 | |
234 | /* Command to unlock bootloader */ | |
7686b108 IV |
235 | #define MXT_UNLOCK_CMD_MSB 0xaa |
236 | #define MXT_UNLOCK_CMD_LSB 0xdc | |
4cf51c38 JS |
237 | |
238 | /* Bootloader mode status */ | |
7686b108 IV |
239 | #define MXT_WAITING_BOOTLOAD_CMD 0xc0 /* valid 7 6 bit only */ |
240 | #define MXT_WAITING_FRAME_DATA 0x80 /* valid 7 6 bit only */ | |
241 | #define MXT_FRAME_CRC_CHECK 0x02 | |
242 | #define MXT_FRAME_CRC_FAIL 0x03 | |
243 | #define MXT_FRAME_CRC_PASS 0x04 | |
244 | #define MXT_APP_CRC_FAIL 0x40 /* valid 7 8 bit only */ | |
245 | #define MXT_BOOT_STATUS_MASK 0x3f | |
e57a66aa ND |
246 | #define MXT_BOOT_EXTENDED_ID (1 << 5) |
247 | #define MXT_BOOT_ID_MASK 0x1f | |
4cf51c38 | 248 | |
4cf51c38 | 249 | /* Touchscreen absolute values */ |
7686b108 | 250 | #define MXT_MAX_AREA 0xff |
4cf51c38 | 251 | |
22dfab7f DK |
252 | #define MXT_PIXELS_PER_MM 20 |
253 | ||
7686b108 | 254 | struct mxt_info { |
4cf51c38 JS |
255 | u8 family_id; |
256 | u8 variant_id; | |
257 | u8 version; | |
258 | u8 build; | |
259 | u8 matrix_xsize; | |
260 | u8 matrix_ysize; | |
261 | u8 object_num; | |
262 | }; | |
263 | ||
7686b108 | 264 | struct mxt_object { |
4cf51c38 JS |
265 | u8 type; |
266 | u16 start_address; | |
1e0c0c5b DK |
267 | u8 size_minus_one; |
268 | u8 instances_minus_one; | |
4cf51c38 | 269 | u8 num_report_ids; |
333e5a9a | 270 | } __packed; |
4cf51c38 | 271 | |
4cf51c38 | 272 | /* Each client has this additional data */ |
7686b108 | 273 | struct mxt_data { |
4cf51c38 JS |
274 | struct i2c_client *client; |
275 | struct input_dev *input_dev; | |
ec02ac2b | 276 | char phys[64]; /* device physical location */ |
7686b108 IV |
277 | const struct mxt_platform_data *pdata; |
278 | struct mxt_object *object_table; | |
279 | struct mxt_info info; | |
4cf51c38 | 280 | unsigned int irq; |
910d8051 JS |
281 | unsigned int max_x; |
282 | unsigned int max_y; | |
d79e7e47 | 283 | bool in_bootloader; |
4ce6fa01 | 284 | u16 mem_size; |
b23157dc ND |
285 | u8 t100_aux_ampl; |
286 | u8 t100_aux_area; | |
287 | u8 t100_aux_vect; | |
9d8dc3e5 | 288 | u8 max_reportid; |
c3f78043 | 289 | u32 config_crc; |
4ce6fa01 | 290 | u32 info_crc; |
f28a842d | 291 | u8 bootloader_addr; |
5f3f9bc2 | 292 | u8 *msg_buf; |
497767d1 | 293 | u8 t6_status; |
b9b05a89 | 294 | bool update_input; |
9d8dc3e5 ND |
295 | u8 last_message_count; |
296 | u8 num_touchids; | |
b23157dc | 297 | u8 multitouch; |
7f3884f7 | 298 | struct t7_config t7_cfg; |
333e5a9a DK |
299 | |
300 | /* Cached parameters from object table */ | |
b9b05a89 | 301 | u16 T5_address; |
5f3f9bc2 | 302 | u8 T5_msg_size; |
fdf80421 | 303 | u8 T6_reportid; |
a4a2ef46 | 304 | u16 T6_address; |
4ce6fa01 | 305 | u16 T7_address; |
333e5a9a DK |
306 | u8 T9_reportid_min; |
307 | u8 T9_reportid_max; | |
22dfab7f | 308 | u8 T19_reportid; |
9d8dc3e5 | 309 | u16 T44_address; |
b23157dc ND |
310 | u8 T100_reportid_min; |
311 | u8 T100_reportid_max; | |
d79e7e47 BL |
312 | |
313 | /* for fw update in bootloader */ | |
314 | struct completion bl_completion; | |
a4a2ef46 IV |
315 | |
316 | /* for reset handling */ | |
317 | struct completion reset_completion; | |
c3f78043 ND |
318 | |
319 | /* for config update handling */ | |
320 | struct completion crc_completion; | |
4cf51c38 JS |
321 | }; |
322 | ||
1e0c0c5b DK |
323 | static size_t mxt_obj_size(const struct mxt_object *obj) |
324 | { | |
325 | return obj->size_minus_one + 1; | |
326 | } | |
327 | ||
328 | static size_t mxt_obj_instances(const struct mxt_object *obj) | |
329 | { | |
330 | return obj->instances_minus_one + 1; | |
331 | } | |
332 | ||
7686b108 | 333 | static bool mxt_object_readable(unsigned int type) |
4cf51c38 JS |
334 | { |
335 | switch (type) { | |
81c88a71 IV |
336 | case MXT_GEN_COMMAND_T6: |
337 | case MXT_GEN_POWER_T7: | |
338 | case MXT_GEN_ACQUIRE_T8: | |
339 | case MXT_GEN_DATASOURCE_T53: | |
340 | case MXT_TOUCH_MULTI_T9: | |
341 | case MXT_TOUCH_KEYARRAY_T15: | |
342 | case MXT_TOUCH_PROXIMITY_T23: | |
343 | case MXT_TOUCH_PROXKEY_T52: | |
344 | case MXT_PROCI_GRIPFACE_T20: | |
345 | case MXT_PROCG_NOISE_T22: | |
346 | case MXT_PROCI_ONETOUCH_T24: | |
347 | case MXT_PROCI_TWOTOUCH_T27: | |
348 | case MXT_PROCI_GRIP_T40: | |
349 | case MXT_PROCI_PALM_T41: | |
350 | case MXT_PROCI_TOUCHSUPPRESSION_T42: | |
351 | case MXT_PROCI_STYLUS_T47: | |
352 | case MXT_PROCG_NOISESUPPRESSION_T48: | |
353 | case MXT_SPT_COMMSCONFIG_T18: | |
354 | case MXT_SPT_GPIOPWM_T19: | |
355 | case MXT_SPT_SELFTEST_T25: | |
356 | case MXT_SPT_CTECONFIG_T28: | |
357 | case MXT_SPT_USERDATA_T38: | |
358 | case MXT_SPT_DIGITIZER_T43: | |
359 | case MXT_SPT_CTECONFIG_T46: | |
4cf51c38 JS |
360 | return true; |
361 | default: | |
362 | return false; | |
363 | } | |
364 | } | |
365 | ||
5f3f9bc2 | 366 | static void mxt_dump_message(struct mxt_data *data, u8 *message) |
4cf51c38 | 367 | { |
5f3f9bc2 ND |
368 | dev_dbg(&data->client->dev, "message: %*ph\n", |
369 | data->T5_msg_size, message); | |
4cf51c38 JS |
370 | } |
371 | ||
a4a2ef46 IV |
372 | static int mxt_wait_for_completion(struct mxt_data *data, |
373 | struct completion *comp, | |
374 | unsigned int timeout_ms) | |
d79e7e47 BL |
375 | { |
376 | struct device *dev = &data->client->dev; | |
d79e7e47 BL |
377 | unsigned long timeout = msecs_to_jiffies(timeout_ms); |
378 | long ret; | |
379 | ||
380 | ret = wait_for_completion_interruptible_timeout(comp, timeout); | |
381 | if (ret < 0) { | |
382 | return ret; | |
383 | } else if (ret == 0) { | |
384 | dev_err(dev, "Wait for completion timed out.\n"); | |
385 | return -ETIMEDOUT; | |
386 | } | |
387 | return 0; | |
388 | } | |
389 | ||
f28a842d ND |
390 | static int mxt_bootloader_read(struct mxt_data *data, |
391 | u8 *val, unsigned int count) | |
392 | { | |
393 | int ret; | |
394 | struct i2c_msg msg; | |
395 | ||
396 | msg.addr = data->bootloader_addr; | |
397 | msg.flags = data->client->flags & I2C_M_TEN; | |
398 | msg.flags |= I2C_M_RD; | |
399 | msg.len = count; | |
400 | msg.buf = val; | |
401 | ||
402 | ret = i2c_transfer(data->client->adapter, &msg, 1); | |
f28a842d ND |
403 | if (ret == 1) { |
404 | ret = 0; | |
405 | } else { | |
406 | ret = ret < 0 ? ret : -EIO; | |
407 | dev_err(&data->client->dev, "%s: i2c recv failed (%d)\n", | |
408 | __func__, ret); | |
409 | } | |
410 | ||
411 | return ret; | |
412 | } | |
413 | ||
414 | static int mxt_bootloader_write(struct mxt_data *data, | |
415 | const u8 * const val, unsigned int count) | |
416 | { | |
417 | int ret; | |
418 | struct i2c_msg msg; | |
419 | ||
420 | msg.addr = data->bootloader_addr; | |
421 | msg.flags = data->client->flags & I2C_M_TEN; | |
422 | msg.len = count; | |
423 | msg.buf = (u8 *)val; | |
424 | ||
425 | ret = i2c_transfer(data->client->adapter, &msg, 1); | |
426 | if (ret == 1) { | |
427 | ret = 0; | |
428 | } else { | |
429 | ret = ret < 0 ? ret : -EIO; | |
430 | dev_err(&data->client->dev, "%s: i2c send failed (%d)\n", | |
431 | __func__, ret); | |
432 | } | |
433 | ||
434 | return ret; | |
435 | } | |
436 | ||
8efaa5e5 | 437 | static int mxt_lookup_bootloader_address(struct mxt_data *data, bool retry) |
f28a842d ND |
438 | { |
439 | u8 appmode = data->client->addr; | |
440 | u8 bootloader; | |
441 | ||
442 | switch (appmode) { | |
443 | case 0x4a: | |
444 | case 0x4b: | |
44a0bab2 | 445 | /* Chips after 1664S use different scheme */ |
8efaa5e5 | 446 | if (retry || data->info.family_id >= 0xa2) { |
44a0bab2 ND |
447 | bootloader = appmode - 0x24; |
448 | break; | |
449 | } | |
450 | /* Fall through for normal case */ | |
f28a842d ND |
451 | case 0x4c: |
452 | case 0x4d: | |
453 | case 0x5a: | |
454 | case 0x5b: | |
455 | bootloader = appmode - 0x26; | |
456 | break; | |
6cd1ab0f | 457 | |
f28a842d ND |
458 | default: |
459 | dev_err(&data->client->dev, | |
460 | "Appmode i2c address 0x%02x not found\n", | |
461 | appmode); | |
462 | return -EINVAL; | |
463 | } | |
464 | ||
465 | data->bootloader_addr = bootloader; | |
466 | return 0; | |
467 | } | |
468 | ||
6cd1ab0f | 469 | static int mxt_probe_bootloader(struct mxt_data *data, bool alt_address) |
a9fdd1e6 ND |
470 | { |
471 | struct device *dev = &data->client->dev; | |
6cd1ab0f | 472 | int error; |
a9fdd1e6 ND |
473 | u8 val; |
474 | bool crc_failure; | |
475 | ||
6cd1ab0f DT |
476 | error = mxt_lookup_bootloader_address(data, alt_address); |
477 | if (error) | |
478 | return error; | |
a9fdd1e6 | 479 | |
6cd1ab0f DT |
480 | error = mxt_bootloader_read(data, &val, 1); |
481 | if (error) | |
482 | return error; | |
a9fdd1e6 ND |
483 | |
484 | /* Check app crc fail mode */ | |
485 | crc_failure = (val & ~MXT_BOOT_STATUS_MASK) == MXT_APP_CRC_FAIL; | |
486 | ||
487 | dev_err(dev, "Detected bootloader, status:%02X%s\n", | |
488 | val, crc_failure ? ", APP_CRC_FAIL" : ""); | |
489 | ||
490 | return 0; | |
491 | } | |
492 | ||
e57a66aa ND |
493 | static u8 mxt_get_bootloader_version(struct mxt_data *data, u8 val) |
494 | { | |
495 | struct device *dev = &data->client->dev; | |
496 | u8 buf[3]; | |
497 | ||
498 | if (val & MXT_BOOT_EXTENDED_ID) { | |
499 | if (mxt_bootloader_read(data, &buf[0], 3) != 0) { | |
500 | dev_err(dev, "%s: i2c failure\n", __func__); | |
68807a0c | 501 | return val; |
e57a66aa ND |
502 | } |
503 | ||
504 | dev_dbg(dev, "Bootloader ID:%d Version:%d\n", buf[1], buf[2]); | |
505 | ||
506 | return buf[0]; | |
507 | } else { | |
508 | dev_dbg(dev, "Bootloader ID:%d\n", val & MXT_BOOT_ID_MASK); | |
509 | ||
510 | return val; | |
511 | } | |
512 | } | |
513 | ||
385deb96 ND |
514 | static int mxt_check_bootloader(struct mxt_data *data, unsigned int state, |
515 | bool wait) | |
4cf51c38 | 516 | { |
f28a842d | 517 | struct device *dev = &data->client->dev; |
4cf51c38 | 518 | u8 val; |
d79e7e47 | 519 | int ret; |
4cf51c38 JS |
520 | |
521 | recheck: | |
385deb96 | 522 | if (wait) { |
d79e7e47 BL |
523 | /* |
524 | * In application update mode, the interrupt | |
525 | * line signals state transitions. We must wait for the | |
526 | * CHG assertion before reading the status byte. | |
527 | * Once the status byte has been read, the line is deasserted. | |
528 | */ | |
a4a2ef46 IV |
529 | ret = mxt_wait_for_completion(data, &data->bl_completion, |
530 | MXT_FW_CHG_TIMEOUT); | |
d79e7e47 BL |
531 | if (ret) { |
532 | /* | |
533 | * TODO: handle -ERESTARTSYS better by terminating | |
534 | * fw update process before returning to userspace | |
535 | * by writing length 0x000 to device (iff we are in | |
536 | * WAITING_FRAME_DATA state). | |
537 | */ | |
f28a842d | 538 | dev_err(dev, "Update wait error %d\n", ret); |
d79e7e47 BL |
539 | return ret; |
540 | } | |
541 | } | |
542 | ||
f28a842d ND |
543 | ret = mxt_bootloader_read(data, &val, 1); |
544 | if (ret) | |
545 | return ret; | |
4cf51c38 | 546 | |
e57a66aa ND |
547 | if (state == MXT_WAITING_BOOTLOAD_CMD) |
548 | val = mxt_get_bootloader_version(data, val); | |
549 | ||
4cf51c38 | 550 | switch (state) { |
7686b108 IV |
551 | case MXT_WAITING_BOOTLOAD_CMD: |
552 | case MXT_WAITING_FRAME_DATA: | |
a9fdd1e6 | 553 | case MXT_APP_CRC_FAIL: |
7686b108 | 554 | val &= ~MXT_BOOT_STATUS_MASK; |
4cf51c38 | 555 | break; |
7686b108 | 556 | case MXT_FRAME_CRC_PASS: |
f943c74a | 557 | if (val == MXT_FRAME_CRC_CHECK) { |
4cf51c38 | 558 | goto recheck; |
f943c74a ND |
559 | } else if (val == MXT_FRAME_CRC_FAIL) { |
560 | dev_err(dev, "Bootloader CRC fail\n"); | |
561 | return -EINVAL; | |
562 | } | |
4cf51c38 JS |
563 | break; |
564 | default: | |
565 | return -EINVAL; | |
566 | } | |
567 | ||
568 | if (val != state) { | |
f28a842d | 569 | dev_err(dev, "Invalid bootloader state %02X != %02X\n", |
7bed6805 | 570 | val, state); |
4cf51c38 JS |
571 | return -EINVAL; |
572 | } | |
573 | ||
574 | return 0; | |
575 | } | |
576 | ||
8efaa5e5 | 577 | static int mxt_send_bootloader_cmd(struct mxt_data *data, bool unlock) |
4cf51c38 | 578 | { |
f28a842d | 579 | int ret; |
4cf51c38 JS |
580 | u8 buf[2]; |
581 | ||
8efaa5e5 ND |
582 | if (unlock) { |
583 | buf[0] = MXT_UNLOCK_CMD_LSB; | |
584 | buf[1] = MXT_UNLOCK_CMD_MSB; | |
585 | } else { | |
586 | buf[0] = 0x01; | |
587 | buf[1] = 0x01; | |
588 | } | |
4cf51c38 | 589 | |
f28a842d ND |
590 | ret = mxt_bootloader_write(data, buf, 2); |
591 | if (ret) | |
592 | return ret; | |
4cf51c38 JS |
593 | |
594 | return 0; | |
595 | } | |
596 | ||
7686b108 | 597 | static int __mxt_read_reg(struct i2c_client *client, |
4cf51c38 JS |
598 | u16 reg, u16 len, void *val) |
599 | { | |
600 | struct i2c_msg xfer[2]; | |
601 | u8 buf[2]; | |
771733e3 | 602 | int ret; |
4cf51c38 JS |
603 | |
604 | buf[0] = reg & 0xff; | |
605 | buf[1] = (reg >> 8) & 0xff; | |
606 | ||
607 | /* Write register */ | |
608 | xfer[0].addr = client->addr; | |
609 | xfer[0].flags = 0; | |
610 | xfer[0].len = 2; | |
611 | xfer[0].buf = buf; | |
612 | ||
613 | /* Read data */ | |
614 | xfer[1].addr = client->addr; | |
615 | xfer[1].flags = I2C_M_RD; | |
616 | xfer[1].len = len; | |
617 | xfer[1].buf = val; | |
618 | ||
771733e3 DK |
619 | ret = i2c_transfer(client->adapter, xfer, 2); |
620 | if (ret == 2) { | |
621 | ret = 0; | |
622 | } else { | |
623 | if (ret >= 0) | |
624 | ret = -EIO; | |
625 | dev_err(&client->dev, "%s: i2c transfer failed (%d)\n", | |
626 | __func__, ret); | |
4cf51c38 JS |
627 | } |
628 | ||
771733e3 | 629 | return ret; |
4cf51c38 JS |
630 | } |
631 | ||
9638ab7c DK |
632 | static int __mxt_write_reg(struct i2c_client *client, u16 reg, u16 len, |
633 | const void *val) | |
4cf51c38 | 634 | { |
9638ab7c DK |
635 | u8 *buf; |
636 | size_t count; | |
771733e3 | 637 | int ret; |
4cf51c38 | 638 | |
9638ab7c DK |
639 | count = len + 2; |
640 | buf = kmalloc(count, GFP_KERNEL); | |
641 | if (!buf) | |
642 | return -ENOMEM; | |
4cf51c38 JS |
643 | |
644 | buf[0] = reg & 0xff; | |
645 | buf[1] = (reg >> 8) & 0xff; | |
9638ab7c | 646 | memcpy(&buf[2], val, len); |
4cf51c38 | 647 | |
9638ab7c DK |
648 | ret = i2c_master_send(client, buf, count); |
649 | if (ret == count) { | |
771733e3 DK |
650 | ret = 0; |
651 | } else { | |
652 | if (ret >= 0) | |
653 | ret = -EIO; | |
654 | dev_err(&client->dev, "%s: i2c send failed (%d)\n", | |
655 | __func__, ret); | |
4cf51c38 JS |
656 | } |
657 | ||
9638ab7c | 658 | kfree(buf); |
771733e3 | 659 | return ret; |
4cf51c38 JS |
660 | } |
661 | ||
9638ab7c | 662 | static int mxt_write_reg(struct i2c_client *client, u16 reg, u8 val) |
4cf51c38 | 663 | { |
9638ab7c | 664 | return __mxt_write_reg(client, reg, 1, &val); |
4cf51c38 JS |
665 | } |
666 | ||
7686b108 IV |
667 | static struct mxt_object * |
668 | mxt_get_object(struct mxt_data *data, u8 type) | |
4cf51c38 | 669 | { |
7686b108 | 670 | struct mxt_object *object; |
4cf51c38 JS |
671 | int i; |
672 | ||
673 | for (i = 0; i < data->info.object_num; i++) { | |
674 | object = data->object_table + i; | |
675 | if (object->type == type) | |
676 | return object; | |
677 | } | |
678 | ||
50a77c65 | 679 | dev_warn(&data->client->dev, "Invalid object type T%u\n", type); |
4cf51c38 JS |
680 | return NULL; |
681 | } | |
682 | ||
497767d1 ND |
683 | static void mxt_proc_t6_messages(struct mxt_data *data, u8 *msg) |
684 | { | |
685 | struct device *dev = &data->client->dev; | |
686 | u8 status = msg[1]; | |
687 | u32 crc = msg[2] | (msg[3] << 8) | (msg[4] << 16); | |
688 | ||
689 | complete(&data->crc_completion); | |
690 | ||
691 | if (crc != data->config_crc) { | |
692 | data->config_crc = crc; | |
693 | dev_dbg(dev, "T6 Config Checksum: 0x%06X\n", crc); | |
694 | } | |
695 | ||
696 | /* Detect reset */ | |
697 | if (status & MXT_T6_STATUS_RESET) | |
698 | complete(&data->reset_completion); | |
699 | ||
700 | /* Output debug if status has changed */ | |
701 | if (status != data->t6_status) | |
702 | dev_dbg(dev, "T6 Status 0x%02X%s%s%s%s%s%s%s\n", | |
703 | status, | |
704 | status == 0 ? " OK" : "", | |
705 | status & MXT_T6_STATUS_RESET ? " RESET" : "", | |
706 | status & MXT_T6_STATUS_OFL ? " OFL" : "", | |
707 | status & MXT_T6_STATUS_SIGERR ? " SIGERR" : "", | |
708 | status & MXT_T6_STATUS_CAL ? " CAL" : "", | |
709 | status & MXT_T6_STATUS_CFGERR ? " CFGERR" : "", | |
710 | status & MXT_T6_STATUS_COMSERR ? " COMSERR" : ""); | |
711 | ||
712 | /* Save current status */ | |
713 | data->t6_status = status; | |
714 | } | |
715 | ||
7f405483 LT |
716 | static int mxt_write_object(struct mxt_data *data, |
717 | u8 type, u8 offset, u8 val) | |
718 | { | |
719 | struct mxt_object *object; | |
720 | u16 reg; | |
721 | ||
722 | object = mxt_get_object(data, type); | |
723 | if (!object || offset >= mxt_obj_size(object)) | |
724 | return -EINVAL; | |
725 | ||
726 | reg = object->start_address; | |
727 | return mxt_write_reg(data->client, reg + offset, val); | |
728 | } | |
729 | ||
5f3f9bc2 | 730 | static void mxt_input_button(struct mxt_data *data, u8 *message) |
22dfab7f DK |
731 | { |
732 | struct input_dev *input = data->input_dev; | |
fb5e4c3e | 733 | const struct mxt_platform_data *pdata = data->pdata; |
22dfab7f DK |
734 | int i; |
735 | ||
fb5e4c3e ND |
736 | for (i = 0; i < pdata->t19_num_keys; i++) { |
737 | if (pdata->t19_keymap[i] == KEY_RESERVED) | |
22dfab7f | 738 | continue; |
c37f6d38 DT |
739 | |
740 | /* Active-low switch */ | |
741 | input_report_key(input, pdata->t19_keymap[i], | |
742 | !(message[1] & BIT(i))); | |
22dfab7f DK |
743 | } |
744 | } | |
745 | ||
b735fbe0 | 746 | static void mxt_input_sync(struct mxt_data *data) |
eef820dc | 747 | { |
b735fbe0 BL |
748 | input_mt_report_pointer_emulation(data->input_dev, |
749 | data->pdata->t19_num_keys); | |
750 | input_sync(data->input_dev); | |
eef820dc ND |
751 | } |
752 | ||
b9b05a89 | 753 | static void mxt_proc_t9_message(struct mxt_data *data, u8 *message) |
4cf51c38 | 754 | { |
4cf51c38 | 755 | struct device *dev = &data->client->dev; |
fba5bc31 | 756 | struct input_dev *input_dev = data->input_dev; |
5f3f9bc2 ND |
757 | int id; |
758 | u8 status; | |
4cf51c38 JS |
759 | int x; |
760 | int y; | |
761 | int area; | |
fea9e467 | 762 | int amplitude; |
4cf51c38 | 763 | |
5f3f9bc2 ND |
764 | id = message[0] - data->T9_reportid_min; |
765 | status = message[1]; | |
766 | x = (message[2] << 4) | ((message[4] >> 4) & 0xf); | |
767 | y = (message[3] << 4) | ((message[4] & 0xf)); | |
eef820dc ND |
768 | |
769 | /* Handle 10/12 bit switching */ | |
910d8051 | 770 | if (data->max_x < 1024) |
eef820dc | 771 | x >>= 2; |
910d8051 | 772 | if (data->max_y < 1024) |
eef820dc | 773 | y >>= 2; |
910d8051 | 774 | |
5f3f9bc2 ND |
775 | area = message[5]; |
776 | amplitude = message[6]; | |
4cf51c38 | 777 | |
b2e459b8 DK |
778 | dev_dbg(dev, |
779 | "[%u] %c%c%c%c%c%c%c%c x: %5u y: %5u area: %3u amp: %3u\n", | |
780 | id, | |
f3889ed1 ND |
781 | (status & MXT_T9_DETECT) ? 'D' : '.', |
782 | (status & MXT_T9_PRESS) ? 'P' : '.', | |
783 | (status & MXT_T9_RELEASE) ? 'R' : '.', | |
784 | (status & MXT_T9_MOVE) ? 'M' : '.', | |
785 | (status & MXT_T9_VECTOR) ? 'V' : '.', | |
786 | (status & MXT_T9_AMP) ? 'A' : '.', | |
787 | (status & MXT_T9_SUPPRESS) ? 'S' : '.', | |
788 | (status & MXT_T9_UNGRIP) ? 'U' : '.', | |
fea9e467 | 789 | x, y, area, amplitude); |
b2e459b8 | 790 | |
fba5bc31 | 791 | input_mt_slot(input_dev, id); |
fba5bc31 | 792 | |
f3889ed1 | 793 | if (status & MXT_T9_DETECT) { |
eef820dc ND |
794 | /* |
795 | * Multiple bits may be set if the host is slow to read | |
796 | * the status messages, indicating all the events that | |
797 | * have happened. | |
798 | */ | |
799 | if (status & MXT_T9_RELEASE) { | |
800 | input_mt_report_slot_state(input_dev, | |
801 | MT_TOOL_FINGER, 0); | |
b735fbe0 | 802 | mxt_input_sync(data); |
eef820dc ND |
803 | } |
804 | ||
805 | /* Touch active */ | |
806 | input_mt_report_slot_state(input_dev, MT_TOOL_FINGER, 1); | |
fba5bc31 DK |
807 | input_report_abs(input_dev, ABS_MT_POSITION_X, x); |
808 | input_report_abs(input_dev, ABS_MT_POSITION_Y, y); | |
fea9e467 | 809 | input_report_abs(input_dev, ABS_MT_PRESSURE, amplitude); |
fba5bc31 | 810 | input_report_abs(input_dev, ABS_MT_TOUCH_MAJOR, area); |
eef820dc ND |
811 | } else { |
812 | /* Touch no longer active, close out slot */ | |
813 | input_mt_report_slot_state(input_dev, MT_TOOL_FINGER, 0); | |
fba5bc31 | 814 | } |
b9b05a89 ND |
815 | |
816 | data->update_input = true; | |
4cf51c38 | 817 | } |
4cf51c38 | 818 | |
b23157dc ND |
819 | static void mxt_proc_t100_message(struct mxt_data *data, u8 *message) |
820 | { | |
821 | struct device *dev = &data->client->dev; | |
822 | struct input_dev *input_dev = data->input_dev; | |
823 | int id; | |
824 | u8 status; | |
825 | u8 type = 0; | |
826 | u16 x; | |
827 | u16 y; | |
828 | int distance = 0; | |
829 | int tool = 0; | |
830 | u8 major = 0; | |
831 | u8 pressure = 0; | |
832 | u8 orientation = 0; | |
833 | ||
834 | id = message[0] - data->T100_reportid_min - 2; | |
835 | ||
836 | /* ignore SCRSTATUS events */ | |
837 | if (id < 0) | |
838 | return; | |
839 | ||
840 | status = message[1]; | |
841 | x = get_unaligned_le16(&message[2]); | |
842 | y = get_unaligned_le16(&message[4]); | |
843 | ||
844 | if (status & MXT_T100_DETECT) { | |
845 | type = (status & MXT_T100_TYPE_MASK) >> 4; | |
846 | ||
847 | switch (type) { | |
848 | case MXT_T100_TYPE_HOVERING_FINGER: | |
849 | tool = MT_TOOL_FINGER; | |
850 | distance = MXT_DISTANCE_HOVERING; | |
851 | ||
852 | if (data->t100_aux_vect) | |
853 | orientation = message[data->t100_aux_vect]; | |
854 | ||
855 | break; | |
856 | ||
857 | case MXT_T100_TYPE_FINGER: | |
858 | case MXT_T100_TYPE_GLOVE: | |
859 | tool = MT_TOOL_FINGER; | |
860 | distance = MXT_DISTANCE_ACTIVE_TOUCH; | |
861 | ||
862 | if (data->t100_aux_area) | |
863 | major = message[data->t100_aux_area]; | |
864 | ||
865 | if (data->t100_aux_ampl) | |
866 | pressure = message[data->t100_aux_ampl]; | |
867 | ||
868 | if (data->t100_aux_vect) | |
869 | orientation = message[data->t100_aux_vect]; | |
870 | ||
871 | break; | |
872 | ||
873 | case MXT_T100_TYPE_PASSIVE_STYLUS: | |
874 | tool = MT_TOOL_PEN; | |
875 | ||
876 | /* | |
877 | * Passive stylus is reported with size zero so | |
878 | * hardcode. | |
879 | */ | |
880 | major = MXT_TOUCH_MAJOR_DEFAULT; | |
881 | ||
882 | if (data->t100_aux_ampl) | |
883 | pressure = message[data->t100_aux_ampl]; | |
884 | ||
885 | break; | |
886 | ||
887 | case MXT_T100_TYPE_LARGE_TOUCH: | |
888 | /* Ignore suppressed touch */ | |
889 | break; | |
890 | ||
891 | default: | |
892 | dev_dbg(dev, "Unexpected T100 type\n"); | |
893 | return; | |
894 | } | |
895 | } | |
896 | ||
897 | /* | |
898 | * Values reported should be non-zero if tool is touching the | |
899 | * device | |
900 | */ | |
901 | if (!pressure && type != MXT_T100_TYPE_HOVERING_FINGER) | |
902 | pressure = MXT_PRESSURE_DEFAULT; | |
903 | ||
904 | input_mt_slot(input_dev, id); | |
905 | ||
906 | if (status & MXT_T100_DETECT) { | |
907 | dev_dbg(dev, "[%u] type:%u x:%u y:%u a:%02X p:%02X v:%02X\n", | |
908 | id, type, x, y, major, pressure, orientation); | |
909 | ||
910 | input_mt_report_slot_state(input_dev, tool, 1); | |
911 | input_report_abs(input_dev, ABS_MT_POSITION_X, x); | |
912 | input_report_abs(input_dev, ABS_MT_POSITION_Y, y); | |
913 | input_report_abs(input_dev, ABS_MT_TOUCH_MAJOR, major); | |
914 | input_report_abs(input_dev, ABS_MT_PRESSURE, pressure); | |
915 | input_report_abs(input_dev, ABS_MT_DISTANCE, distance); | |
916 | input_report_abs(input_dev, ABS_MT_ORIENTATION, orientation); | |
917 | } else { | |
918 | dev_dbg(dev, "[%u] release\n", id); | |
919 | ||
920 | /* close out slot */ | |
921 | input_mt_report_slot_state(input_dev, 0, 0); | |
922 | } | |
923 | ||
924 | data->update_input = true; | |
925 | } | |
926 | ||
b9b05a89 | 927 | static int mxt_proc_message(struct mxt_data *data, u8 *message) |
04a79181 | 928 | { |
b9b05a89 ND |
929 | u8 report_id = message[0]; |
930 | ||
931 | if (report_id == MXT_RPTID_NOMSG) | |
932 | return 0; | |
933 | ||
934 | if (report_id == data->T6_reportid) { | |
935 | mxt_proc_t6_messages(data, message); | |
936 | } else if (!data->input_dev) { | |
937 | /* | |
938 | * Do not report events if input device | |
939 | * is not yet registered. | |
940 | */ | |
941 | mxt_dump_message(data, message); | |
b23157dc ND |
942 | } else if (report_id >= data->T9_reportid_min && |
943 | report_id <= data->T9_reportid_max) { | |
b9b05a89 | 944 | mxt_proc_t9_message(data, message); |
b23157dc ND |
945 | } else if (report_id >= data->T100_reportid_min && |
946 | report_id <= data->T100_reportid_max) { | |
947 | mxt_proc_t100_message(data, message); | |
b9b05a89 ND |
948 | } else if (report_id == data->T19_reportid) { |
949 | mxt_input_button(data, message); | |
950 | data->update_input = true; | |
951 | } else { | |
952 | mxt_dump_message(data, message); | |
953 | } | |
954 | ||
955 | return 1; | |
4cf51c38 JS |
956 | } |
957 | ||
9d8dc3e5 | 958 | static int mxt_read_and_process_messages(struct mxt_data *data, u8 count) |
4cf51c38 | 959 | { |
4cf51c38 | 960 | struct device *dev = &data->client->dev; |
b9b05a89 | 961 | int ret; |
9d8dc3e5 ND |
962 | int i; |
963 | u8 num_valid = 0; | |
964 | ||
965 | /* Safety check for msg_buf */ | |
966 | if (count > data->max_reportid) | |
967 | return -EINVAL; | |
4cf51c38 | 968 | |
9d8dc3e5 | 969 | /* Process remaining messages if necessary */ |
b9b05a89 | 970 | ret = __mxt_read_reg(data->client, data->T5_address, |
9d8dc3e5 | 971 | data->T5_msg_size * count, data->msg_buf); |
b9b05a89 | 972 | if (ret) { |
9d8dc3e5 | 973 | dev_err(dev, "Failed to read %u messages (%d)\n", count, ret); |
b9b05a89 ND |
974 | return ret; |
975 | } | |
4cf51c38 | 976 | |
9d8dc3e5 ND |
977 | for (i = 0; i < count; i++) { |
978 | ret = mxt_proc_message(data, | |
979 | data->msg_buf + data->T5_msg_size * i); | |
980 | ||
981 | if (ret == 1) | |
982 | num_valid++; | |
983 | } | |
984 | ||
985 | /* return number of messages read */ | |
986 | return num_valid; | |
b9b05a89 | 987 | } |
4cf51c38 | 988 | |
9d8dc3e5 | 989 | static irqreturn_t mxt_process_messages_t44(struct mxt_data *data) |
b9b05a89 | 990 | { |
9d8dc3e5 | 991 | struct device *dev = &data->client->dev; |
b9b05a89 | 992 | int ret; |
9d8dc3e5 | 993 | u8 count, num_left; |
4cf51c38 | 994 | |
9d8dc3e5 ND |
995 | /* Read T44 and T5 together */ |
996 | ret = __mxt_read_reg(data->client, data->T44_address, | |
997 | data->T5_msg_size + 1, data->msg_buf); | |
998 | if (ret) { | |
999 | dev_err(dev, "Failed to read T44 and T5 (%d)\n", ret); | |
1000 | return IRQ_NONE; | |
1001 | } | |
1002 | ||
1003 | count = data->msg_buf[0]; | |
1004 | ||
1005 | if (count == 0) { | |
651b4608 ND |
1006 | /* |
1007 | * This condition is caused by the CHG line being configured | |
1008 | * in Mode 0. It results in unnecessary I2C operations but it | |
1009 | * is benign. | |
1010 | */ | |
1011 | dev_dbg(dev, "Interrupt triggered but zero messages\n"); | |
9d8dc3e5 ND |
1012 | return IRQ_NONE; |
1013 | } else if (count > data->max_reportid) { | |
1014 | dev_err(dev, "T44 count %d exceeded max report id\n", count); | |
1015 | count = data->max_reportid; | |
1016 | } | |
1017 | ||
1018 | /* Process first message */ | |
1019 | ret = mxt_proc_message(data, data->msg_buf + 1); | |
1020 | if (ret < 0) { | |
1021 | dev_warn(dev, "Unexpected invalid message\n"); | |
1022 | return IRQ_NONE; | |
1023 | } | |
1024 | ||
1025 | num_left = count - 1; | |
1026 | ||
1027 | /* Process remaining messages if necessary */ | |
1028 | if (num_left) { | |
1029 | ret = mxt_read_and_process_messages(data, num_left); | |
b9b05a89 | 1030 | if (ret < 0) |
9d8dc3e5 ND |
1031 | goto end; |
1032 | else if (ret != num_left) | |
1033 | dev_warn(dev, "Unexpected invalid message\n"); | |
1034 | } | |
1035 | ||
1036 | end: | |
1037 | if (data->update_input) { | |
1038 | mxt_input_sync(data); | |
1039 | data->update_input = false; | |
1040 | } | |
1041 | ||
1042 | return IRQ_HANDLED; | |
1043 | } | |
1044 | ||
1045 | static int mxt_process_messages_until_invalid(struct mxt_data *data) | |
1046 | { | |
1047 | struct device *dev = &data->client->dev; | |
1048 | int count, read; | |
1049 | u8 tries = 2; | |
1050 | ||
1051 | count = data->max_reportid; | |
1052 | ||
1053 | /* Read messages until we force an invalid */ | |
1054 | do { | |
1055 | read = mxt_read_and_process_messages(data, count); | |
1056 | if (read < count) | |
1057 | return 0; | |
1058 | } while (--tries); | |
1059 | ||
1060 | if (data->update_input) { | |
1061 | mxt_input_sync(data); | |
1062 | data->update_input = false; | |
1063 | } | |
1064 | ||
1065 | dev_err(dev, "CHG pin isn't cleared\n"); | |
1066 | return -EBUSY; | |
1067 | } | |
1068 | ||
1069 | static irqreturn_t mxt_process_messages(struct mxt_data *data) | |
1070 | { | |
1071 | int total_handled, num_handled; | |
1072 | u8 count = data->last_message_count; | |
1073 | ||
1074 | if (count < 1 || count > data->max_reportid) | |
1075 | count = 1; | |
1076 | ||
1077 | /* include final invalid message */ | |
1078 | total_handled = mxt_read_and_process_messages(data, count + 1); | |
1079 | if (total_handled < 0) | |
1080 | return IRQ_NONE; | |
1081 | /* if there were invalid messages, then we are done */ | |
1082 | else if (total_handled <= count) | |
1083 | goto update_count; | |
1084 | ||
1085 | /* keep reading two msgs until one is invalid or reportid limit */ | |
1086 | do { | |
1087 | num_handled = mxt_read_and_process_messages(data, 2); | |
1088 | if (num_handled < 0) | |
b9b05a89 | 1089 | return IRQ_NONE; |
9d8dc3e5 ND |
1090 | |
1091 | total_handled += num_handled; | |
1092 | ||
1093 | if (num_handled < 2) | |
1094 | break; | |
1095 | } while (total_handled < data->num_touchids); | |
1096 | ||
1097 | update_count: | |
1098 | data->last_message_count = total_handled; | |
b9b05a89 ND |
1099 | |
1100 | if (data->update_input) { | |
b735fbe0 | 1101 | mxt_input_sync(data); |
b9b05a89 ND |
1102 | data->update_input = false; |
1103 | } | |
64464ae8 | 1104 | |
4cf51c38 JS |
1105 | return IRQ_HANDLED; |
1106 | } | |
1107 | ||
d79e7e47 BL |
1108 | static irqreturn_t mxt_interrupt(int irq, void *dev_id) |
1109 | { | |
1110 | struct mxt_data *data = dev_id; | |
1111 | ||
1112 | if (data->in_bootloader) { | |
1113 | /* bootloader state transition completion */ | |
1114 | complete(&data->bl_completion); | |
1115 | return IRQ_HANDLED; | |
1116 | } | |
1117 | ||
dd24dcf5 ND |
1118 | if (!data->object_table) |
1119 | return IRQ_HANDLED; | |
1120 | ||
9d8dc3e5 ND |
1121 | if (data->T44_address) { |
1122 | return mxt_process_messages_t44(data); | |
1123 | } else { | |
1124 | return mxt_process_messages(data); | |
1125 | } | |
d79e7e47 BL |
1126 | } |
1127 | ||
a4a2ef46 IV |
1128 | static int mxt_t6_command(struct mxt_data *data, u16 cmd_offset, |
1129 | u8 value, bool wait) | |
1130 | { | |
1131 | u16 reg; | |
1132 | u8 command_register; | |
1133 | int timeout_counter = 0; | |
1134 | int ret; | |
1135 | ||
1136 | reg = data->T6_address + cmd_offset; | |
1137 | ||
1138 | ret = mxt_write_reg(data->client, reg, value); | |
1139 | if (ret) | |
1140 | return ret; | |
1141 | ||
1142 | if (!wait) | |
1143 | return 0; | |
1144 | ||
1145 | do { | |
1146 | msleep(20); | |
1147 | ret = __mxt_read_reg(data->client, reg, 1, &command_register); | |
1148 | if (ret) | |
1149 | return ret; | |
1150 | } while (command_register != 0 && timeout_counter++ <= 100); | |
1151 | ||
1152 | if (timeout_counter > 100) { | |
1153 | dev_err(&data->client->dev, "Command failed!\n"); | |
1154 | return -EIO; | |
1155 | } | |
1156 | ||
1157 | return 0; | |
1158 | } | |
1159 | ||
1160 | static int mxt_soft_reset(struct mxt_data *data) | |
1161 | { | |
1162 | struct device *dev = &data->client->dev; | |
1163 | int ret = 0; | |
1164 | ||
1165 | dev_info(dev, "Resetting chip\n"); | |
1166 | ||
1167 | reinit_completion(&data->reset_completion); | |
1168 | ||
1169 | ret = mxt_t6_command(data, MXT_COMMAND_RESET, MXT_RESET_VALUE, false); | |
1170 | if (ret) | |
1171 | return ret; | |
1172 | ||
1173 | ret = mxt_wait_for_completion(data, &data->reset_completion, | |
1174 | MXT_RESET_TIMEOUT); | |
1175 | if (ret) | |
1176 | return ret; | |
1177 | ||
1178 | return 0; | |
1179 | } | |
1180 | ||
c3f78043 ND |
1181 | static void mxt_update_crc(struct mxt_data *data, u8 cmd, u8 value) |
1182 | { | |
1183 | /* | |
1184 | * On failure, CRC is set to 0 and config will always be | |
1185 | * downloaded. | |
1186 | */ | |
1187 | data->config_crc = 0; | |
1188 | reinit_completion(&data->crc_completion); | |
1189 | ||
1190 | mxt_t6_command(data, cmd, value, true); | |
1191 | ||
1192 | /* | |
1193 | * Wait for crc message. On failure, CRC is set to 0 and config will | |
1194 | * always be downloaded. | |
1195 | */ | |
1196 | mxt_wait_for_completion(data, &data->crc_completion, MXT_CRC_TIMEOUT); | |
1197 | } | |
1198 | ||
4ce6fa01 ND |
1199 | static void mxt_calc_crc24(u32 *crc, u8 firstbyte, u8 secondbyte) |
1200 | { | |
1201 | static const unsigned int crcpoly = 0x80001B; | |
1202 | u32 result; | |
1203 | u32 data_word; | |
1204 | ||
1205 | data_word = (secondbyte << 8) | firstbyte; | |
1206 | result = ((*crc << 1) ^ data_word); | |
1207 | ||
1208 | if (result & 0x1000000) | |
1209 | result ^= crcpoly; | |
1210 | ||
1211 | *crc = result; | |
1212 | } | |
1213 | ||
1214 | static u32 mxt_calculate_crc(u8 *base, off_t start_off, off_t end_off) | |
1215 | { | |
1216 | u32 crc = 0; | |
1217 | u8 *ptr = base + start_off; | |
1218 | u8 *last_val = base + end_off - 1; | |
1219 | ||
1220 | if (end_off < start_off) | |
1221 | return -EINVAL; | |
1222 | ||
1223 | while (ptr < last_val) { | |
1224 | mxt_calc_crc24(&crc, *ptr, *(ptr + 1)); | |
1225 | ptr += 2; | |
1226 | } | |
1227 | ||
1228 | /* if len is odd, fill the last byte with 0 */ | |
1229 | if (ptr == last_val) | |
1230 | mxt_calc_crc24(&crc, *ptr, 0); | |
1231 | ||
1232 | /* Mask to 24-bit */ | |
1233 | crc &= 0x00FFFFFF; | |
1234 | ||
1235 | return crc; | |
1236 | } | |
1237 | ||
efdbd7ae DT |
1238 | static int mxt_prepare_cfg_mem(struct mxt_data *data, |
1239 | const struct firmware *cfg, | |
1240 | unsigned int data_pos, | |
1241 | unsigned int cfg_start_ofs, | |
1242 | u8 *config_mem, | |
1243 | size_t config_mem_size) | |
1244 | { | |
1245 | struct device *dev = &data->client->dev; | |
1246 | struct mxt_object *object; | |
1247 | unsigned int type, instance, size, byte_offset; | |
1248 | int offset; | |
1249 | int ret; | |
1250 | int i; | |
1251 | u16 reg; | |
1252 | u8 val; | |
1253 | ||
1254 | while (data_pos < cfg->size) { | |
1255 | /* Read type, instance, length */ | |
1256 | ret = sscanf(cfg->data + data_pos, "%x %x %x%n", | |
1257 | &type, &instance, &size, &offset); | |
1258 | if (ret == 0) { | |
1259 | /* EOF */ | |
1260 | break; | |
1261 | } else if (ret != 3) { | |
1262 | dev_err(dev, "Bad format: failed to parse object\n"); | |
1263 | return -EINVAL; | |
1264 | } | |
1265 | data_pos += offset; | |
1266 | ||
1267 | object = mxt_get_object(data, type); | |
1268 | if (!object) { | |
1269 | /* Skip object */ | |
1270 | for (i = 0; i < size; i++) { | |
1271 | ret = sscanf(cfg->data + data_pos, "%hhx%n", | |
041fa159 DT |
1272 | &val, &offset); |
1273 | if (ret != 1) { | |
1274 | dev_err(dev, "Bad format in T%d at %d\n", | |
1275 | type, i); | |
1276 | return -EINVAL; | |
1277 | } | |
efdbd7ae DT |
1278 | data_pos += offset; |
1279 | } | |
1280 | continue; | |
1281 | } | |
1282 | ||
1283 | if (size > mxt_obj_size(object)) { | |
1284 | /* | |
1285 | * Either we are in fallback mode due to wrong | |
1286 | * config or config from a later fw version, | |
1287 | * or the file is corrupt or hand-edited. | |
1288 | */ | |
1289 | dev_warn(dev, "Discarding %zu byte(s) in T%u\n", | |
1290 | size - mxt_obj_size(object), type); | |
1291 | } else if (mxt_obj_size(object) > size) { | |
1292 | /* | |
1293 | * If firmware is upgraded, new bytes may be added to | |
1294 | * end of objects. It is generally forward compatible | |
1295 | * to zero these bytes - previous behaviour will be | |
1296 | * retained. However this does invalidate the CRC and | |
1297 | * will force fallback mode until the configuration is | |
1298 | * updated. We warn here but do nothing else - the | |
1299 | * malloc has zeroed the entire configuration. | |
1300 | */ | |
1301 | dev_warn(dev, "Zeroing %zu byte(s) in T%d\n", | |
1302 | mxt_obj_size(object) - size, type); | |
1303 | } | |
1304 | ||
1305 | if (instance >= mxt_obj_instances(object)) { | |
1306 | dev_err(dev, "Object instances exceeded!\n"); | |
1307 | return -EINVAL; | |
1308 | } | |
1309 | ||
1310 | reg = object->start_address + mxt_obj_size(object) * instance; | |
1311 | ||
1312 | for (i = 0; i < size; i++) { | |
1313 | ret = sscanf(cfg->data + data_pos, "%hhx%n", | |
1314 | &val, | |
1315 | &offset); | |
1316 | if (ret != 1) { | |
041fa159 DT |
1317 | dev_err(dev, "Bad format in T%d at %d\n", |
1318 | type, i); | |
efdbd7ae DT |
1319 | return -EINVAL; |
1320 | } | |
1321 | data_pos += offset; | |
1322 | ||
1323 | if (i > mxt_obj_size(object)) | |
1324 | continue; | |
1325 | ||
1326 | byte_offset = reg + i - cfg_start_ofs; | |
1327 | ||
041fa159 | 1328 | if (byte_offset >= 0 && byte_offset < config_mem_size) { |
efdbd7ae DT |
1329 | *(config_mem + byte_offset) = val; |
1330 | } else { | |
1331 | dev_err(dev, "Bad object: reg:%d, T%d, ofs=%d\n", | |
1332 | reg, object->type, byte_offset); | |
1333 | return -EINVAL; | |
1334 | } | |
1335 | } | |
1336 | } | |
1337 | ||
1338 | return 0; | |
1339 | } | |
1340 | ||
1341 | static int mxt_upload_cfg_mem(struct mxt_data *data, unsigned int cfg_start, | |
1342 | u8 *config_mem, size_t config_mem_size) | |
1343 | { | |
1344 | unsigned int byte_offset = 0; | |
1345 | int error; | |
1346 | ||
1347 | /* Write configuration as blocks */ | |
1348 | while (byte_offset < config_mem_size) { | |
1349 | unsigned int size = config_mem_size - byte_offset; | |
1350 | ||
1351 | if (size > MXT_MAX_BLOCK_WRITE) | |
1352 | size = MXT_MAX_BLOCK_WRITE; | |
1353 | ||
1354 | error = __mxt_write_reg(data->client, | |
1355 | cfg_start + byte_offset, | |
1356 | size, config_mem + byte_offset); | |
1357 | if (error) { | |
1358 | dev_err(&data->client->dev, | |
1359 | "Config write error, ret=%d\n", error); | |
1360 | return error; | |
1361 | } | |
1362 | ||
1363 | byte_offset += size; | |
1364 | } | |
1365 | ||
1366 | return 0; | |
1367 | } | |
1368 | ||
7f3884f7 ND |
1369 | static int mxt_init_t7_power_cfg(struct mxt_data *data); |
1370 | ||
50a77c65 ND |
1371 | /* |
1372 | * mxt_update_cfg - download configuration to chip | |
1373 | * | |
1374 | * Atmel Raw Config File Format | |
1375 | * | |
1376 | * The first four lines of the raw config file contain: | |
1377 | * 1) Version | |
1378 | * 2) Chip ID Information (first 7 bytes of device memory) | |
1379 | * 3) Chip Information Block 24-bit CRC Checksum | |
1380 | * 4) Chip Configuration 24-bit CRC Checksum | |
1381 | * | |
1382 | * The rest of the file consists of one line per object instance: | |
1383 | * <TYPE> <INSTANCE> <SIZE> <CONTENTS> | |
1384 | * | |
1385 | * <TYPE> - 2-byte object type as hex | |
1386 | * <INSTANCE> - 2-byte object instance number as hex | |
1387 | * <SIZE> - 2-byte object size as hex | |
1388 | * <CONTENTS> - array of <SIZE> 1-byte hex values | |
1389 | */ | |
1390 | static int mxt_update_cfg(struct mxt_data *data, const struct firmware *cfg) | |
4cf51c38 | 1391 | { |
4cf51c38 | 1392 | struct device *dev = &data->client->dev; |
50a77c65 | 1393 | struct mxt_info cfg_info; |
cf94bc09 | 1394 | int ret; |
50a77c65 | 1395 | int offset; |
4ce6fa01 | 1396 | int data_pos; |
50a77c65 | 1397 | int i; |
4ce6fa01 ND |
1398 | int cfg_start_ofs; |
1399 | u32 info_crc, config_crc, calculated_crc; | |
1400 | u8 *config_mem; | |
1401 | size_t config_mem_size; | |
4cf51c38 | 1402 | |
50a77c65 ND |
1403 | mxt_update_crc(data, MXT_COMMAND_REPORTALL, 1); |
1404 | ||
1405 | if (strncmp(cfg->data, MXT_CFG_MAGIC, strlen(MXT_CFG_MAGIC))) { | |
1406 | dev_err(dev, "Unrecognised config file\n"); | |
efdbd7ae | 1407 | return -EINVAL; |
4cf51c38 JS |
1408 | } |
1409 | ||
4ce6fa01 | 1410 | data_pos = strlen(MXT_CFG_MAGIC); |
50a77c65 ND |
1411 | |
1412 | /* Load information block and check */ | |
1413 | for (i = 0; i < sizeof(struct mxt_info); i++) { | |
4ce6fa01 | 1414 | ret = sscanf(cfg->data + data_pos, "%hhx%n", |
50a77c65 ND |
1415 | (unsigned char *)&cfg_info + i, |
1416 | &offset); | |
1417 | if (ret != 1) { | |
1418 | dev_err(dev, "Bad format\n"); | |
efdbd7ae | 1419 | return -EINVAL; |
50a77c65 | 1420 | } |
c3f78043 | 1421 | |
4ce6fa01 | 1422 | data_pos += offset; |
c3f78043 ND |
1423 | } |
1424 | ||
50a77c65 ND |
1425 | if (cfg_info.family_id != data->info.family_id) { |
1426 | dev_err(dev, "Family ID mismatch!\n"); | |
efdbd7ae | 1427 | return -EINVAL; |
50a77c65 | 1428 | } |
c3f78043 | 1429 | |
50a77c65 ND |
1430 | if (cfg_info.variant_id != data->info.variant_id) { |
1431 | dev_err(dev, "Variant ID mismatch!\n"); | |
efdbd7ae | 1432 | return -EINVAL; |
50a77c65 | 1433 | } |
4cf51c38 | 1434 | |
4ce6fa01 ND |
1435 | /* Read CRCs */ |
1436 | ret = sscanf(cfg->data + data_pos, "%x%n", &info_crc, &offset); | |
50a77c65 ND |
1437 | if (ret != 1) { |
1438 | dev_err(dev, "Bad format: failed to parse Info CRC\n"); | |
efdbd7ae | 1439 | return -EINVAL; |
50a77c65 | 1440 | } |
4ce6fa01 | 1441 | data_pos += offset; |
50a77c65 | 1442 | |
4ce6fa01 | 1443 | ret = sscanf(cfg->data + data_pos, "%x%n", &config_crc, &offset); |
50a77c65 ND |
1444 | if (ret != 1) { |
1445 | dev_err(dev, "Bad format: failed to parse Config CRC\n"); | |
efdbd7ae | 1446 | return -EINVAL; |
50a77c65 | 1447 | } |
4ce6fa01 | 1448 | data_pos += offset; |
50a77c65 | 1449 | |
4ce6fa01 ND |
1450 | /* |
1451 | * The Info Block CRC is calculated over mxt_info and the object | |
1452 | * table. If it does not match then we are trying to load the | |
1453 | * configuration from a different chip or firmware version, so | |
1454 | * the configuration CRC is invalid anyway. | |
1455 | */ | |
1456 | if (info_crc == data->info_crc) { | |
1457 | if (config_crc == 0 || data->config_crc == 0) { | |
1458 | dev_info(dev, "CRC zero, attempting to apply config\n"); | |
1459 | } else if (config_crc == data->config_crc) { | |
1460 | dev_dbg(dev, "Config CRC 0x%06X: OK\n", | |
1461 | data->config_crc); | |
efdbd7ae | 1462 | return 0; |
4ce6fa01 ND |
1463 | } else { |
1464 | dev_info(dev, "Config CRC 0x%06X: does not match file 0x%06X\n", | |
1465 | data->config_crc, config_crc); | |
1466 | } | |
1467 | } else { | |
1468 | dev_warn(dev, | |
1469 | "Warning: Info CRC error - device=0x%06X file=0x%06X\n", | |
1470 | data->info_crc, info_crc); | |
50a77c65 ND |
1471 | } |
1472 | ||
4ce6fa01 ND |
1473 | /* Malloc memory to store configuration */ |
1474 | cfg_start_ofs = MXT_OBJECT_START + | |
1475 | data->info.object_num * sizeof(struct mxt_object) + | |
1476 | MXT_INFO_CHECKSUM_SIZE; | |
1477 | config_mem_size = data->mem_size - cfg_start_ofs; | |
1478 | config_mem = kzalloc(config_mem_size, GFP_KERNEL); | |
1479 | if (!config_mem) { | |
1480 | dev_err(dev, "Failed to allocate memory\n"); | |
efdbd7ae | 1481 | return -ENOMEM; |
4ce6fa01 | 1482 | } |
50a77c65 | 1483 | |
efdbd7ae DT |
1484 | ret = mxt_prepare_cfg_mem(data, cfg, data_pos, cfg_start_ofs, |
1485 | config_mem, config_mem_size); | |
1486 | if (ret) | |
1487 | goto release_mem; | |
50a77c65 | 1488 | |
4ce6fa01 ND |
1489 | /* Calculate crc of the received configs (not the raw config file) */ |
1490 | if (data->T7_address < cfg_start_ofs) { | |
1491 | dev_err(dev, "Bad T7 address, T7addr = %x, config offset %x\n", | |
1492 | data->T7_address, cfg_start_ofs); | |
1493 | ret = 0; | |
1494 | goto release_mem; | |
1495 | } | |
50a77c65 | 1496 | |
4ce6fa01 ND |
1497 | calculated_crc = mxt_calculate_crc(config_mem, |
1498 | data->T7_address - cfg_start_ofs, | |
1499 | config_mem_size); | |
1500 | ||
efdbd7ae | 1501 | if (config_crc > 0 && config_crc != calculated_crc) |
4ce6fa01 ND |
1502 | dev_warn(dev, "Config CRC error, calculated=%06X, file=%06X\n", |
1503 | calculated_crc, config_crc); | |
1504 | ||
efdbd7ae DT |
1505 | ret = mxt_upload_cfg_mem(data, cfg_start_ofs, |
1506 | config_mem, config_mem_size); | |
1507 | if (ret) | |
1508 | goto release_mem; | |
4cf51c38 | 1509 | |
c3f78043 ND |
1510 | mxt_update_crc(data, MXT_COMMAND_BACKUPNV, MXT_BACKUP_VALUE); |
1511 | ||
1512 | ret = mxt_soft_reset(data); | |
1513 | if (ret) | |
4ce6fa01 | 1514 | goto release_mem; |
c3f78043 ND |
1515 | |
1516 | dev_info(dev, "Config successfully updated\n"); | |
1517 | ||
7f3884f7 ND |
1518 | /* T7 config may have changed */ |
1519 | mxt_init_t7_power_cfg(data); | |
1520 | ||
4ce6fa01 ND |
1521 | release_mem: |
1522 | kfree(config_mem); | |
50a77c65 | 1523 | return ret; |
4cf51c38 JS |
1524 | } |
1525 | ||
dd24dcf5 ND |
1526 | static int mxt_acquire_irq(struct mxt_data *data) |
1527 | { | |
1528 | int error; | |
1529 | ||
1530 | enable_irq(data->irq); | |
1531 | ||
9d8dc3e5 | 1532 | error = mxt_process_messages_until_invalid(data); |
dd24dcf5 ND |
1533 | if (error) |
1534 | return error; | |
1535 | ||
1536 | return 0; | |
1537 | } | |
1538 | ||
7686b108 | 1539 | static int mxt_get_info(struct mxt_data *data) |
4cf51c38 JS |
1540 | { |
1541 | struct i2c_client *client = data->client; | |
7686b108 | 1542 | struct mxt_info *info = &data->info; |
4cf51c38 | 1543 | int error; |
4cf51c38 | 1544 | |
23003a84 DK |
1545 | /* Read 7-byte info block starting at address 0 */ |
1546 | error = __mxt_read_reg(client, MXT_INFO, sizeof(*info), info); | |
4cf51c38 JS |
1547 | if (error) |
1548 | return error; | |
4cf51c38 JS |
1549 | |
1550 | return 0; | |
1551 | } | |
1552 | ||
58e4aeee | 1553 | static void mxt_free_input_device(struct mxt_data *data) |
5f3f9bc2 | 1554 | { |
58e4aeee SW |
1555 | if (data->input_dev) { |
1556 | input_unregister_device(data->input_dev); | |
1557 | data->input_dev = NULL; | |
1558 | } | |
1559 | } | |
5f3f9bc2 | 1560 | |
58e4aeee SW |
1561 | static void mxt_free_object_table(struct mxt_data *data) |
1562 | { | |
5f3f9bc2 ND |
1563 | kfree(data->object_table); |
1564 | data->object_table = NULL; | |
1565 | kfree(data->msg_buf); | |
1566 | data->msg_buf = NULL; | |
b9b05a89 | 1567 | data->T5_address = 0; |
5f3f9bc2 ND |
1568 | data->T5_msg_size = 0; |
1569 | data->T6_reportid = 0; | |
1570 | data->T7_address = 0; | |
1571 | data->T9_reportid_min = 0; | |
1572 | data->T9_reportid_max = 0; | |
1573 | data->T19_reportid = 0; | |
9d8dc3e5 | 1574 | data->T44_address = 0; |
b23157dc ND |
1575 | data->T100_reportid_min = 0; |
1576 | data->T100_reportid_max = 0; | |
9d8dc3e5 | 1577 | data->max_reportid = 0; |
5f3f9bc2 ND |
1578 | } |
1579 | ||
7686b108 | 1580 | static int mxt_get_object_table(struct mxt_data *data) |
4cf51c38 | 1581 | { |
333e5a9a DK |
1582 | struct i2c_client *client = data->client; |
1583 | size_t table_size; | |
dd24dcf5 | 1584 | struct mxt_object *object_table; |
4cf51c38 JS |
1585 | int error; |
1586 | int i; | |
333e5a9a | 1587 | u8 reportid; |
4ce6fa01 | 1588 | u16 end_address; |
333e5a9a DK |
1589 | |
1590 | table_size = data->info.object_num * sizeof(struct mxt_object); | |
dd24dcf5 ND |
1591 | object_table = kzalloc(table_size, GFP_KERNEL); |
1592 | if (!object_table) { | |
1593 | dev_err(&data->client->dev, "Failed to allocate memory\n"); | |
1594 | return -ENOMEM; | |
1595 | } | |
1596 | ||
333e5a9a | 1597 | error = __mxt_read_reg(client, MXT_OBJECT_START, table_size, |
dd24dcf5 ND |
1598 | object_table); |
1599 | if (error) { | |
1600 | kfree(object_table); | |
333e5a9a | 1601 | return error; |
dd24dcf5 | 1602 | } |
4cf51c38 | 1603 | |
333e5a9a DK |
1604 | /* Valid Report IDs start counting from 1 */ |
1605 | reportid = 1; | |
4ce6fa01 | 1606 | data->mem_size = 0; |
4cf51c38 | 1607 | for (i = 0; i < data->info.object_num; i++) { |
dd24dcf5 | 1608 | struct mxt_object *object = object_table + i; |
333e5a9a | 1609 | u8 min_id, max_id; |
4cf51c38 | 1610 | |
333e5a9a | 1611 | le16_to_cpus(&object->start_address); |
4cf51c38 JS |
1612 | |
1613 | if (object->num_report_ids) { | |
333e5a9a | 1614 | min_id = reportid; |
4cf51c38 | 1615 | reportid += object->num_report_ids * |
1e0c0c5b | 1616 | mxt_obj_instances(object); |
333e5a9a DK |
1617 | max_id = reportid - 1; |
1618 | } else { | |
1619 | min_id = 0; | |
1620 | max_id = 0; | |
1621 | } | |
1622 | ||
1623 | dev_dbg(&data->client->dev, | |
7bed6805 | 1624 | "T%u Start:%u Size:%zu Instances:%zu Report IDs:%u-%u\n", |
1e0c0c5b DK |
1625 | object->type, object->start_address, |
1626 | mxt_obj_size(object), mxt_obj_instances(object), | |
1627 | min_id, max_id); | |
333e5a9a DK |
1628 | |
1629 | switch (object->type) { | |
5f3f9bc2 | 1630 | case MXT_GEN_MESSAGE_T5: |
437d4f37 ND |
1631 | if (data->info.family_id == 0x80 && |
1632 | data->info.version < 0x20) { | |
9d8dc3e5 | 1633 | /* |
437d4f37 ND |
1634 | * On mXT224 firmware versions prior to V2.0 |
1635 | * read and discard unused CRC byte otherwise | |
1636 | * DMA reads are misaligned. | |
9d8dc3e5 ND |
1637 | */ |
1638 | data->T5_msg_size = mxt_obj_size(object); | |
1639 | } else { | |
1640 | /* CRC not enabled, so skip last byte */ | |
1641 | data->T5_msg_size = mxt_obj_size(object) - 1; | |
1642 | } | |
b9b05a89 | 1643 | data->T5_address = object->start_address; |
041fa159 | 1644 | break; |
fdf80421 DK |
1645 | case MXT_GEN_COMMAND_T6: |
1646 | data->T6_reportid = min_id; | |
a4a2ef46 | 1647 | data->T6_address = object->start_address; |
fdf80421 | 1648 | break; |
4ce6fa01 ND |
1649 | case MXT_GEN_POWER_T7: |
1650 | data->T7_address = object->start_address; | |
1651 | break; | |
333e5a9a | 1652 | case MXT_TOUCH_MULTI_T9: |
b23157dc | 1653 | data->multitouch = MXT_TOUCH_MULTI_T9; |
333e5a9a DK |
1654 | data->T9_reportid_min = min_id; |
1655 | data->T9_reportid_max = max_id; | |
9d8dc3e5 ND |
1656 | data->num_touchids = object->num_report_ids |
1657 | * mxt_obj_instances(object); | |
1658 | break; | |
1659 | case MXT_SPT_MESSAGECOUNT_T44: | |
1660 | data->T44_address = object->start_address; | |
333e5a9a | 1661 | break; |
22dfab7f DK |
1662 | case MXT_SPT_GPIOPWM_T19: |
1663 | data->T19_reportid = min_id; | |
1664 | break; | |
b23157dc ND |
1665 | case MXT_TOUCH_MULTITOUCHSCREEN_T100: |
1666 | data->multitouch = MXT_TOUCH_MULTITOUCHSCREEN_T100; | |
1667 | data->T100_reportid_min = min_id; | |
1668 | data->T100_reportid_max = max_id; | |
1669 | /* first two report IDs reserved */ | |
1670 | data->num_touchids = object->num_report_ids - 2; | |
1671 | break; | |
4cf51c38 | 1672 | } |
4ce6fa01 ND |
1673 | |
1674 | end_address = object->start_address | |
1675 | + mxt_obj_size(object) * mxt_obj_instances(object) - 1; | |
1676 | ||
1677 | if (end_address >= data->mem_size) | |
1678 | data->mem_size = end_address + 1; | |
4cf51c38 JS |
1679 | } |
1680 | ||
9d8dc3e5 ND |
1681 | /* Store maximum reportid */ |
1682 | data->max_reportid = reportid; | |
1683 | ||
1684 | /* If T44 exists, T5 position has to be directly after */ | |
1685 | if (data->T44_address && (data->T5_address != data->T44_address + 1)) { | |
1686 | dev_err(&client->dev, "Invalid T44 position\n"); | |
1687 | error = -EINVAL; | |
1688 | goto free_object_table; | |
1689 | } | |
1690 | ||
1691 | data->msg_buf = kcalloc(data->max_reportid, | |
1692 | data->T5_msg_size, GFP_KERNEL); | |
5f3f9bc2 ND |
1693 | if (!data->msg_buf) { |
1694 | dev_err(&client->dev, "Failed to allocate message buffer\n"); | |
1695 | error = -ENOMEM; | |
1696 | goto free_object_table; | |
1697 | } | |
1698 | ||
dd24dcf5 ND |
1699 | data->object_table = object_table; |
1700 | ||
4cf51c38 | 1701 | return 0; |
4cf51c38 | 1702 | |
5f3f9bc2 ND |
1703 | free_object_table: |
1704 | mxt_free_object_table(data); | |
1705 | return error; | |
7d4fa100 DK |
1706 | } |
1707 | ||
61dc1aba ND |
1708 | static int mxt_read_t9_resolution(struct mxt_data *data) |
1709 | { | |
1710 | struct i2c_client *client = data->client; | |
1711 | int error; | |
1712 | struct t9_range range; | |
1713 | unsigned char orient; | |
1714 | struct mxt_object *object; | |
1715 | ||
1716 | object = mxt_get_object(data, MXT_TOUCH_MULTI_T9); | |
1717 | if (!object) | |
1718 | return -EINVAL; | |
1719 | ||
1720 | error = __mxt_read_reg(client, | |
1721 | object->start_address + MXT_T9_RANGE, | |
1722 | sizeof(range), &range); | |
1723 | if (error) | |
1724 | return error; | |
1725 | ||
1726 | le16_to_cpus(&range.x); | |
1727 | le16_to_cpus(&range.y); | |
1728 | ||
1729 | error = __mxt_read_reg(client, | |
1730 | object->start_address + MXT_T9_ORIENT, | |
1731 | 1, &orient); | |
1732 | if (error) | |
1733 | return error; | |
1734 | ||
1735 | /* Handle default values */ | |
1736 | if (range.x == 0) | |
1737 | range.x = 1023; | |
1738 | ||
1739 | if (range.y == 0) | |
1740 | range.y = 1023; | |
1741 | ||
f3889ed1 | 1742 | if (orient & MXT_T9_ORIENT_SWITCH) { |
61dc1aba ND |
1743 | data->max_x = range.y; |
1744 | data->max_y = range.x; | |
1745 | } else { | |
1746 | data->max_x = range.x; | |
1747 | data->max_y = range.y; | |
1748 | } | |
1749 | ||
1750 | dev_dbg(&client->dev, | |
1751 | "Touchscreen size X%uY%u\n", data->max_x, data->max_y); | |
1752 | ||
1753 | return 0; | |
1754 | } | |
1755 | ||
b23157dc ND |
1756 | static int mxt_read_t100_config(struct mxt_data *data) |
1757 | { | |
1758 | struct i2c_client *client = data->client; | |
1759 | int error; | |
1760 | struct mxt_object *object; | |
1761 | u16 range_x, range_y; | |
1762 | u8 cfg, tchaux; | |
1763 | u8 aux; | |
1764 | ||
1765 | object = mxt_get_object(data, MXT_TOUCH_MULTITOUCHSCREEN_T100); | |
1766 | if (!object) | |
1767 | return -EINVAL; | |
1768 | ||
1769 | error = __mxt_read_reg(client, | |
1770 | object->start_address + MXT_T100_XRANGE, | |
1771 | sizeof(range_x), &range_x); | |
1772 | if (error) | |
1773 | return error; | |
1774 | ||
1775 | le16_to_cpus(&range_x); | |
1776 | ||
1777 | error = __mxt_read_reg(client, | |
1778 | object->start_address + MXT_T100_YRANGE, | |
1779 | sizeof(range_y), &range_y); | |
1780 | if (error) | |
1781 | return error; | |
1782 | ||
1783 | le16_to_cpus(&range_y); | |
1784 | ||
1785 | error = __mxt_read_reg(client, | |
1786 | object->start_address + MXT_T100_CFG1, | |
1787 | 1, &cfg); | |
1788 | if (error) | |
1789 | return error; | |
1790 | ||
1791 | error = __mxt_read_reg(client, | |
1792 | object->start_address + MXT_T100_TCHAUX, | |
1793 | 1, &tchaux); | |
1794 | if (error) | |
1795 | return error; | |
1796 | ||
1797 | /* Handle default values */ | |
1798 | if (range_x == 0) | |
1799 | range_x = 1023; | |
1800 | ||
1801 | if (range_y == 0) | |
1802 | range_y = 1023; | |
1803 | ||
1804 | if (cfg & MXT_T100_CFG_SWITCHXY) { | |
1805 | data->max_x = range_y; | |
1806 | data->max_y = range_x; | |
1807 | } else { | |
1808 | data->max_x = range_x; | |
1809 | data->max_y = range_y; | |
1810 | } | |
1811 | ||
1812 | /* allocate aux bytes */ | |
1813 | aux = 6; | |
1814 | ||
1815 | if (tchaux & MXT_T100_TCHAUX_VECT) | |
1816 | data->t100_aux_vect = aux++; | |
1817 | ||
1818 | if (tchaux & MXT_T100_TCHAUX_AMPL) | |
1819 | data->t100_aux_ampl = aux++; | |
1820 | ||
1821 | if (tchaux & MXT_T100_TCHAUX_AREA) | |
1822 | data->t100_aux_area = aux++; | |
1823 | ||
1824 | dev_dbg(&client->dev, | |
1825 | "T100 aux mappings vect:%u ampl:%u area:%u\n", | |
1826 | data->t100_aux_vect, data->t100_aux_ampl, data->t100_aux_area); | |
1827 | ||
1828 | dev_info(&client->dev, | |
1829 | "T100 Touchscreen size X%uY%u\n", data->max_x, data->max_y); | |
1830 | ||
1831 | return 0; | |
1832 | } | |
1833 | ||
7a53d609 ND |
1834 | static int mxt_input_open(struct input_dev *dev); |
1835 | static void mxt_input_close(struct input_dev *dev); | |
1836 | ||
b6d2d328 SS |
1837 | static void mxt_set_up_as_touchpad(struct input_dev *input_dev, |
1838 | struct mxt_data *data) | |
1839 | { | |
1840 | const struct mxt_platform_data *pdata = data->pdata; | |
1841 | int i; | |
1842 | ||
1843 | input_dev->name = "Atmel maXTouch Touchpad"; | |
1844 | ||
1845 | __set_bit(INPUT_PROP_BUTTONPAD, input_dev->propbit); | |
1846 | ||
1847 | input_abs_set_res(input_dev, ABS_X, MXT_PIXELS_PER_MM); | |
1848 | input_abs_set_res(input_dev, ABS_Y, MXT_PIXELS_PER_MM); | |
1849 | input_abs_set_res(input_dev, ABS_MT_POSITION_X, | |
1850 | MXT_PIXELS_PER_MM); | |
1851 | input_abs_set_res(input_dev, ABS_MT_POSITION_Y, | |
1852 | MXT_PIXELS_PER_MM); | |
1853 | ||
1854 | for (i = 0; i < pdata->t19_num_keys; i++) | |
1855 | if (pdata->t19_keymap[i] != KEY_RESERVED) | |
1856 | input_set_capability(input_dev, EV_KEY, | |
1857 | pdata->t19_keymap[i]); | |
1858 | } | |
1859 | ||
b23157dc | 1860 | static int mxt_initialize_input_device(struct mxt_data *data) |
7a53d609 | 1861 | { |
7a53d609 | 1862 | const struct mxt_platform_data *pdata = data->pdata; |
b6d2d328 | 1863 | struct device *dev = &data->client->dev; |
7a53d609 ND |
1864 | struct input_dev *input_dev; |
1865 | int error; | |
1866 | unsigned int num_mt_slots; | |
1867 | unsigned int mt_flags = 0; | |
7a53d609 | 1868 | |
b23157dc ND |
1869 | switch (data->multitouch) { |
1870 | case MXT_TOUCH_MULTI_T9: | |
1871 | num_mt_slots = data->T9_reportid_max - data->T9_reportid_min + 1; | |
1872 | error = mxt_read_t9_resolution(data); | |
1873 | if (error) | |
1874 | dev_warn(dev, "Failed to initialize T9 resolution\n"); | |
1875 | break; | |
1876 | ||
1877 | case MXT_TOUCH_MULTITOUCHSCREEN_T100: | |
1878 | num_mt_slots = data->num_touchids; | |
1879 | error = mxt_read_t100_config(data); | |
1880 | if (error) | |
1881 | dev_warn(dev, "Failed to read T100 config\n"); | |
1882 | break; | |
1883 | ||
1884 | default: | |
1885 | dev_err(dev, "Invalid multitouch object\n"); | |
1886 | return -EINVAL; | |
1887 | } | |
7a53d609 ND |
1888 | |
1889 | input_dev = input_allocate_device(); | |
1890 | if (!input_dev) { | |
1891 | dev_err(dev, "Failed to allocate memory\n"); | |
1892 | return -ENOMEM; | |
1893 | } | |
1894 | ||
1895 | input_dev->name = "Atmel maXTouch Touchscreen"; | |
1896 | input_dev->phys = data->phys; | |
1897 | input_dev->id.bustype = BUS_I2C; | |
1898 | input_dev->dev.parent = dev; | |
1899 | input_dev->open = mxt_input_open; | |
1900 | input_dev->close = mxt_input_close; | |
1901 | ||
b23157dc | 1902 | input_set_capability(input_dev, EV_KEY, BTN_TOUCH); |
7a53d609 | 1903 | |
7a53d609 | 1904 | /* For single touch */ |
b23157dc ND |
1905 | input_set_abs_params(input_dev, ABS_X, 0, data->max_x, 0, 0); |
1906 | input_set_abs_params(input_dev, ABS_Y, 0, data->max_y, 0, 0); | |
1907 | ||
1908 | if (data->multitouch == MXT_TOUCH_MULTI_T9 || | |
1909 | (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 && | |
1910 | data->t100_aux_ampl)) { | |
1911 | input_set_abs_params(input_dev, ABS_PRESSURE, 0, 255, 0, 0); | |
1912 | } | |
7a53d609 | 1913 | |
b6d2d328 SS |
1914 | /* If device has buttons we assume it is a touchpad */ |
1915 | if (pdata->t19_num_keys) { | |
1916 | mxt_set_up_as_touchpad(input_dev, data); | |
1917 | mt_flags |= INPUT_MT_POINTER; | |
1918 | } | |
1919 | ||
7a53d609 | 1920 | /* For multi touch */ |
7a53d609 ND |
1921 | error = input_mt_init_slots(input_dev, num_mt_slots, mt_flags); |
1922 | if (error) { | |
1923 | dev_err(dev, "Error %d initialising slots\n", error); | |
1924 | goto err_free_mem; | |
1925 | } | |
1926 | ||
b23157dc ND |
1927 | if (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100) { |
1928 | input_set_abs_params(input_dev, ABS_MT_TOOL_TYPE, | |
1929 | 0, MT_TOOL_MAX, 0, 0); | |
1930 | input_set_abs_params(input_dev, ABS_MT_DISTANCE, | |
1931 | MXT_DISTANCE_ACTIVE_TOUCH, | |
1932 | MXT_DISTANCE_HOVERING, | |
1933 | 0, 0); | |
1934 | } | |
1935 | ||
7a53d609 ND |
1936 | input_set_abs_params(input_dev, ABS_MT_POSITION_X, |
1937 | 0, data->max_x, 0, 0); | |
1938 | input_set_abs_params(input_dev, ABS_MT_POSITION_Y, | |
1939 | 0, data->max_y, 0, 0); | |
b23157dc ND |
1940 | |
1941 | if (data->multitouch == MXT_TOUCH_MULTI_T9 || | |
1942 | (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 && | |
1943 | data->t100_aux_area)) { | |
1944 | input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR, | |
1945 | 0, MXT_MAX_AREA, 0, 0); | |
1946 | } | |
1947 | ||
1948 | if (data->multitouch == MXT_TOUCH_MULTI_T9 || | |
1949 | (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 && | |
1950 | data->t100_aux_ampl)) { | |
1951 | input_set_abs_params(input_dev, ABS_MT_PRESSURE, | |
1952 | 0, 255, 0, 0); | |
1953 | } | |
1954 | ||
1955 | if (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 && | |
1956 | data->t100_aux_vect) { | |
1957 | input_set_abs_params(input_dev, ABS_MT_ORIENTATION, | |
1958 | 0, 255, 0, 0); | |
1959 | } | |
1960 | ||
1961 | if (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 && | |
1962 | data->t100_aux_ampl) { | |
1963 | input_set_abs_params(input_dev, ABS_MT_PRESSURE, | |
1964 | 0, 255, 0, 0); | |
1965 | } | |
1966 | ||
1967 | if (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 && | |
1968 | data->t100_aux_vect) { | |
1969 | input_set_abs_params(input_dev, ABS_MT_ORIENTATION, | |
1970 | 0, 255, 0, 0); | |
1971 | } | |
7a53d609 ND |
1972 | |
1973 | input_set_drvdata(input_dev, data); | |
1974 | ||
1975 | error = input_register_device(input_dev); | |
1976 | if (error) { | |
1977 | dev_err(dev, "Error %d registering input device\n", error); | |
1978 | goto err_free_mem; | |
1979 | } | |
1980 | ||
1981 | data->input_dev = input_dev; | |
1982 | ||
1983 | return 0; | |
1984 | ||
1985 | err_free_mem: | |
1986 | input_free_device(input_dev); | |
1987 | return error; | |
1988 | } | |
1989 | ||
50a77c65 ND |
1990 | static int mxt_configure_objects(struct mxt_data *data, |
1991 | const struct firmware *cfg); | |
1992 | ||
1993 | static void mxt_config_cb(const struct firmware *cfg, void *ctx) | |
1994 | { | |
1995 | mxt_configure_objects(ctx, cfg); | |
efdbd7ae | 1996 | release_firmware(cfg); |
50a77c65 ND |
1997 | } |
1998 | ||
7686b108 | 1999 | static int mxt_initialize(struct mxt_data *data) |
4cf51c38 JS |
2000 | { |
2001 | struct i2c_client *client = data->client; | |
6cd1ab0f | 2002 | int recovery_attempts = 0; |
4cf51c38 | 2003 | int error; |
4cf51c38 | 2004 | |
6cd1ab0f DT |
2005 | while (1) { |
2006 | error = mxt_get_info(data); | |
2007 | if (!error) | |
2008 | break; | |
2009 | ||
2010 | /* Check bootloader state */ | |
2011 | error = mxt_probe_bootloader(data, false); | |
8efaa5e5 | 2012 | if (error) { |
6cd1ab0f DT |
2013 | dev_info(&client->dev, "Trying alternate bootloader address\n"); |
2014 | error = mxt_probe_bootloader(data, true); | |
2015 | if (error) { | |
8efaa5e5 ND |
2016 | /* Chip is not in appmode or bootloader mode */ |
2017 | return error; | |
2018 | } | |
6cd1ab0f | 2019 | } |
a9fdd1e6 | 2020 | |
6cd1ab0f DT |
2021 | /* OK, we are in bootloader, see if we can recover */ |
2022 | if (++recovery_attempts > 1) { | |
2023 | dev_err(&client->dev, "Could not recover from bootloader mode\n"); | |
2024 | /* | |
2025 | * We can reflash from this state, so do not | |
2026 | * abort initialization. | |
2027 | */ | |
2028 | data->in_bootloader = true; | |
2029 | return 0; | |
8efaa5e5 | 2030 | } |
6cd1ab0f DT |
2031 | |
2032 | /* Attempt to exit bootloader into app mode */ | |
2033 | mxt_send_bootloader_cmd(data, false); | |
2034 | msleep(MXT_FW_RESET_TIME); | |
a9fdd1e6 | 2035 | } |
4cf51c38 | 2036 | |
4cf51c38 | 2037 | /* Get object table information */ |
7686b108 | 2038 | error = mxt_get_object_table(data); |
7bed6805 ND |
2039 | if (error) { |
2040 | dev_err(&client->dev, "Error %d reading object table\n", error); | |
dd24dcf5 | 2041 | return error; |
7bed6805 | 2042 | } |
4cf51c38 | 2043 | |
041fa159 | 2044 | error = mxt_acquire_irq(data); |
dd24dcf5 ND |
2045 | if (error) |
2046 | goto err_free_object_table; | |
2047 | ||
6cd1ab0f DT |
2048 | error = request_firmware_nowait(THIS_MODULE, true, MXT_CFG_NAME, |
2049 | &client->dev, GFP_KERNEL, data, | |
2050 | mxt_config_cb); | |
2051 | if (error) { | |
2052 | dev_err(&client->dev, "Failed to invoke firmware loader: %d\n", | |
2053 | error); | |
2054 | goto err_free_object_table; | |
2055 | } | |
50a77c65 ND |
2056 | |
2057 | return 0; | |
2058 | ||
2059 | err_free_object_table: | |
2060 | mxt_free_object_table(data); | |
2061 | return error; | |
2062 | } | |
2063 | ||
7f3884f7 ND |
2064 | static int mxt_set_t7_power_cfg(struct mxt_data *data, u8 sleep) |
2065 | { | |
2066 | struct device *dev = &data->client->dev; | |
2067 | int error; | |
2068 | struct t7_config *new_config; | |
2069 | struct t7_config deepsleep = { .active = 0, .idle = 0 }; | |
2070 | ||
2071 | if (sleep == MXT_POWER_CFG_DEEPSLEEP) | |
2072 | new_config = &deepsleep; | |
2073 | else | |
2074 | new_config = &data->t7_cfg; | |
2075 | ||
2076 | error = __mxt_write_reg(data->client, data->T7_address, | |
2077 | sizeof(data->t7_cfg), new_config); | |
2078 | if (error) | |
2079 | return error; | |
2080 | ||
2081 | dev_dbg(dev, "Set T7 ACTV:%d IDLE:%d\n", | |
2082 | new_config->active, new_config->idle); | |
2083 | ||
2084 | return 0; | |
2085 | } | |
2086 | ||
2087 | static int mxt_init_t7_power_cfg(struct mxt_data *data) | |
2088 | { | |
2089 | struct device *dev = &data->client->dev; | |
2090 | int error; | |
2091 | bool retry = false; | |
2092 | ||
2093 | recheck: | |
2094 | error = __mxt_read_reg(data->client, data->T7_address, | |
2095 | sizeof(data->t7_cfg), &data->t7_cfg); | |
2096 | if (error) | |
2097 | return error; | |
2098 | ||
2099 | if (data->t7_cfg.active == 0 || data->t7_cfg.idle == 0) { | |
2100 | if (!retry) { | |
2101 | dev_dbg(dev, "T7 cfg zero, resetting\n"); | |
2102 | mxt_soft_reset(data); | |
2103 | retry = true; | |
2104 | goto recheck; | |
2105 | } else { | |
2106 | dev_dbg(dev, "T7 cfg zero after reset, overriding\n"); | |
2107 | data->t7_cfg.active = 20; | |
2108 | data->t7_cfg.idle = 100; | |
2109 | return mxt_set_t7_power_cfg(data, MXT_POWER_CFG_RUN); | |
2110 | } | |
2111 | } | |
2112 | ||
2113 | dev_dbg(dev, "Initialized power cfg: ACTV %d, IDLE %d\n", | |
2114 | data->t7_cfg.active, data->t7_cfg.idle); | |
2115 | return 0; | |
2116 | } | |
2117 | ||
50a77c65 ND |
2118 | static int mxt_configure_objects(struct mxt_data *data, |
2119 | const struct firmware *cfg) | |
2120 | { | |
2121 | struct device *dev = &data->client->dev; | |
2122 | struct mxt_info *info = &data->info; | |
2123 | int error; | |
2124 | ||
7f3884f7 ND |
2125 | error = mxt_init_t7_power_cfg(data); |
2126 | if (error) { | |
2127 | dev_err(dev, "Failed to initialize power cfg\n"); | |
2128 | return error; | |
2129 | } | |
2130 | ||
50a77c65 ND |
2131 | if (cfg) { |
2132 | error = mxt_update_cfg(data, cfg); | |
2133 | if (error) | |
2134 | dev_warn(dev, "Error %d updating config\n", error); | |
7bed6805 | 2135 | } |
4cf51c38 | 2136 | |
b23157dc ND |
2137 | if (data->multitouch) { |
2138 | error = mxt_initialize_input_device(data); | |
2139 | if (error) | |
2140 | return error; | |
2141 | } else { | |
2142 | dev_warn(dev, "No touch object detected\n"); | |
2143 | } | |
4cf51c38 | 2144 | |
50a77c65 | 2145 | dev_info(dev, |
61dc1aba ND |
2146 | "Family: %u Variant: %u Firmware V%u.%u.%02X Objects: %u\n", |
2147 | info->family_id, info->variant_id, info->version >> 4, | |
2148 | info->version & 0xf, info->build, info->object_num); | |
4cf51c38 JS |
2149 | |
2150 | return 0; | |
2151 | } | |
2152 | ||
b19fc9ec DK |
2153 | /* Firmware Version is returned as Major.Minor.Build */ |
2154 | static ssize_t mxt_fw_version_show(struct device *dev, | |
2155 | struct device_attribute *attr, char *buf) | |
2156 | { | |
2157 | struct mxt_data *data = dev_get_drvdata(dev); | |
2158 | struct mxt_info *info = &data->info; | |
2159 | return scnprintf(buf, PAGE_SIZE, "%u.%u.%02X\n", | |
2160 | info->version >> 4, info->version & 0xf, info->build); | |
2161 | } | |
2162 | ||
2163 | /* Hardware Version is returned as FamilyID.VariantID */ | |
2164 | static ssize_t mxt_hw_version_show(struct device *dev, | |
2165 | struct device_attribute *attr, char *buf) | |
2166 | { | |
2167 | struct mxt_data *data = dev_get_drvdata(dev); | |
2168 | struct mxt_info *info = &data->info; | |
2169 | return scnprintf(buf, PAGE_SIZE, "%u.%u\n", | |
2170 | info->family_id, info->variant_id); | |
2171 | } | |
2172 | ||
794eb67e DK |
2173 | static ssize_t mxt_show_instance(char *buf, int count, |
2174 | struct mxt_object *object, int instance, | |
2175 | const u8 *val) | |
2176 | { | |
2177 | int i; | |
2178 | ||
1e0c0c5b | 2179 | if (mxt_obj_instances(object) > 1) |
794eb67e DK |
2180 | count += scnprintf(buf + count, PAGE_SIZE - count, |
2181 | "Instance %u\n", instance); | |
2182 | ||
1e0c0c5b | 2183 | for (i = 0; i < mxt_obj_size(object); i++) |
794eb67e DK |
2184 | count += scnprintf(buf + count, PAGE_SIZE - count, |
2185 | "\t[%2u]: %02x (%d)\n", i, val[i], val[i]); | |
2186 | count += scnprintf(buf + count, PAGE_SIZE - count, "\n"); | |
2187 | ||
2188 | return count; | |
2189 | } | |
2190 | ||
7686b108 | 2191 | static ssize_t mxt_object_show(struct device *dev, |
4cf51c38 JS |
2192 | struct device_attribute *attr, char *buf) |
2193 | { | |
7686b108 IV |
2194 | struct mxt_data *data = dev_get_drvdata(dev); |
2195 | struct mxt_object *object; | |
4cf51c38 JS |
2196 | int count = 0; |
2197 | int i, j; | |
2198 | int error; | |
43a91d51 | 2199 | u8 *obuf; |
4cf51c38 | 2200 | |
43a91d51 DK |
2201 | /* Pre-allocate buffer large enough to hold max sized object. */ |
2202 | obuf = kmalloc(256, GFP_KERNEL); | |
2203 | if (!obuf) | |
2204 | return -ENOMEM; | |
4cf51c38 | 2205 | |
43a91d51 | 2206 | error = 0; |
4cf51c38 JS |
2207 | for (i = 0; i < data->info.object_num; i++) { |
2208 | object = data->object_table + i; | |
2209 | ||
91630955 | 2210 | if (!mxt_object_readable(object->type)) |
4cf51c38 | 2211 | continue; |
4cf51c38 | 2212 | |
91630955 DK |
2213 | count += scnprintf(buf + count, PAGE_SIZE - count, |
2214 | "T%u:\n", object->type); | |
4cf51c38 | 2215 | |
1e0c0c5b DK |
2216 | for (j = 0; j < mxt_obj_instances(object); j++) { |
2217 | u16 size = mxt_obj_size(object); | |
794eb67e | 2218 | u16 addr = object->start_address + j * size; |
43a91d51 | 2219 | |
794eb67e | 2220 | error = __mxt_read_reg(data->client, addr, size, obuf); |
4cf51c38 | 2221 | if (error) |
794eb67e | 2222 | goto done; |
4cf51c38 | 2223 | |
794eb67e | 2224 | count = mxt_show_instance(buf, count, object, j, obuf); |
4cf51c38 | 2225 | } |
4cf51c38 JS |
2226 | } |
2227 | ||
794eb67e | 2228 | done: |
43a91d51 DK |
2229 | kfree(obuf); |
2230 | return error ?: count; | |
4cf51c38 JS |
2231 | } |
2232 | ||
f2ac6cb9 ND |
2233 | static int mxt_check_firmware_format(struct device *dev, |
2234 | const struct firmware *fw) | |
2235 | { | |
2236 | unsigned int pos = 0; | |
2237 | char c; | |
2238 | ||
2239 | while (pos < fw->size) { | |
2240 | c = *(fw->data + pos); | |
2241 | ||
2242 | if (c < '0' || (c > '9' && c < 'A') || c > 'F') | |
2243 | return 0; | |
2244 | ||
2245 | pos++; | |
2246 | } | |
2247 | ||
2248 | /* | |
2249 | * To convert file try: | |
2250 | * xxd -r -p mXTXXX__APP_VX-X-XX.enc > maxtouch.fw | |
2251 | */ | |
2252 | dev_err(dev, "Aborting: firmware file must be in binary format\n"); | |
2253 | ||
2254 | return -EINVAL; | |
2255 | } | |
2256 | ||
7686b108 | 2257 | static int mxt_load_fw(struct device *dev, const char *fn) |
4cf51c38 | 2258 | { |
7686b108 | 2259 | struct mxt_data *data = dev_get_drvdata(dev); |
4cf51c38 JS |
2260 | const struct firmware *fw = NULL; |
2261 | unsigned int frame_size; | |
2262 | unsigned int pos = 0; | |
f943c74a | 2263 | unsigned int retry = 0; |
f477c758 | 2264 | unsigned int frame = 0; |
4cf51c38 JS |
2265 | int ret; |
2266 | ||
2267 | ret = request_firmware(&fw, fn, dev); | |
2268 | if (ret) { | |
2269 | dev_err(dev, "Unable to open firmware %s\n", fn); | |
2270 | return ret; | |
2271 | } | |
2272 | ||
f2ac6cb9 ND |
2273 | /* Check for incorrect enc file */ |
2274 | ret = mxt_check_firmware_format(dev, fw); | |
2275 | if (ret) | |
2276 | goto release_firmware; | |
2277 | ||
a9fdd1e6 ND |
2278 | if (!data->in_bootloader) { |
2279 | /* Change to the bootloader mode */ | |
2280 | data->in_bootloader = true; | |
d79e7e47 | 2281 | |
a9fdd1e6 ND |
2282 | ret = mxt_t6_command(data, MXT_COMMAND_RESET, |
2283 | MXT_BOOT_VALUE, false); | |
2284 | if (ret) | |
2285 | goto release_firmware; | |
a4a2ef46 | 2286 | |
a9fdd1e6 | 2287 | msleep(MXT_RESET_TIME); |
8efaa5e5 ND |
2288 | |
2289 | /* Do not need to scan since we know family ID */ | |
2290 | ret = mxt_lookup_bootloader_address(data, 0); | |
2291 | if (ret) | |
2292 | goto release_firmware; | |
58e4aeee SW |
2293 | |
2294 | mxt_free_input_device(data); | |
2295 | mxt_free_object_table(data); | |
8efaa5e5 ND |
2296 | } else { |
2297 | enable_irq(data->irq); | |
a9fdd1e6 | 2298 | } |
4cf51c38 | 2299 | |
d79e7e47 BL |
2300 | reinit_completion(&data->bl_completion); |
2301 | ||
385deb96 ND |
2302 | ret = mxt_check_bootloader(data, MXT_WAITING_BOOTLOAD_CMD, false); |
2303 | if (ret) { | |
2304 | /* Bootloader may still be unlocked from previous attempt */ | |
2305 | ret = mxt_check_bootloader(data, MXT_WAITING_FRAME_DATA, false); | |
2306 | if (ret) | |
2307 | goto disable_irq; | |
2308 | } else { | |
2309 | dev_info(dev, "Unlocking bootloader\n"); | |
4cf51c38 | 2310 | |
385deb96 | 2311 | /* Unlock bootloader */ |
8efaa5e5 | 2312 | ret = mxt_send_bootloader_cmd(data, true); |
385deb96 ND |
2313 | if (ret) |
2314 | goto disable_irq; | |
2315 | } | |
4cf51c38 JS |
2316 | |
2317 | while (pos < fw->size) { | |
385deb96 | 2318 | ret = mxt_check_bootloader(data, MXT_WAITING_FRAME_DATA, true); |
4cf51c38 | 2319 | if (ret) |
d79e7e47 | 2320 | goto disable_irq; |
4cf51c38 JS |
2321 | |
2322 | frame_size = ((*(fw->data + pos) << 8) | *(fw->data + pos + 1)); | |
2323 | ||
f943c74a | 2324 | /* Take account of CRC bytes */ |
4cf51c38 JS |
2325 | frame_size += 2; |
2326 | ||
2327 | /* Write one frame to device */ | |
f28a842d ND |
2328 | ret = mxt_bootloader_write(data, fw->data + pos, frame_size); |
2329 | if (ret) | |
2330 | goto disable_irq; | |
4cf51c38 | 2331 | |
385deb96 | 2332 | ret = mxt_check_bootloader(data, MXT_FRAME_CRC_PASS, true); |
f943c74a ND |
2333 | if (ret) { |
2334 | retry++; | |
2335 | ||
2336 | /* Back off by 20ms per retry */ | |
2337 | msleep(retry * 20); | |
4cf51c38 | 2338 | |
f943c74a ND |
2339 | if (retry > 20) { |
2340 | dev_err(dev, "Retry count exceeded\n"); | |
2341 | goto disable_irq; | |
2342 | } | |
2343 | } else { | |
2344 | retry = 0; | |
2345 | pos += frame_size; | |
f477c758 | 2346 | frame++; |
f943c74a | 2347 | } |
4cf51c38 | 2348 | |
f477c758 ND |
2349 | if (frame % 50 == 0) |
2350 | dev_dbg(dev, "Sent %d frames, %d/%zd bytes\n", | |
2351 | frame, pos, fw->size); | |
4cf51c38 JS |
2352 | } |
2353 | ||
a0434b75 | 2354 | /* Wait for flash. */ |
a4a2ef46 IV |
2355 | ret = mxt_wait_for_completion(data, &data->bl_completion, |
2356 | MXT_FW_RESET_TIME); | |
a0434b75 BL |
2357 | if (ret) |
2358 | goto disable_irq; | |
2359 | ||
f477c758 ND |
2360 | dev_dbg(dev, "Sent %d frames, %d bytes\n", frame, pos); |
2361 | ||
a0434b75 BL |
2362 | /* |
2363 | * Wait for device to reset. Some bootloader versions do not assert | |
2364 | * the CHG line after bootloading has finished, so ignore potential | |
2365 | * errors. | |
2366 | */ | |
a4a2ef46 | 2367 | mxt_wait_for_completion(data, &data->bl_completion, MXT_FW_RESET_TIME); |
a0434b75 | 2368 | |
d79e7e47 BL |
2369 | data->in_bootloader = false; |
2370 | ||
2371 | disable_irq: | |
2372 | disable_irq(data->irq); | |
a4a2ef46 | 2373 | release_firmware: |
4cf51c38 | 2374 | release_firmware(fw); |
4cf51c38 JS |
2375 | return ret; |
2376 | } | |
2377 | ||
7686b108 | 2378 | static ssize_t mxt_update_fw_store(struct device *dev, |
4cf51c38 JS |
2379 | struct device_attribute *attr, |
2380 | const char *buf, size_t count) | |
2381 | { | |
7686b108 | 2382 | struct mxt_data *data = dev_get_drvdata(dev); |
4cf51c38 JS |
2383 | int error; |
2384 | ||
7686b108 | 2385 | error = mxt_load_fw(dev, MXT_FW_NAME); |
4cf51c38 JS |
2386 | if (error) { |
2387 | dev_err(dev, "The firmware update failed(%d)\n", error); | |
2388 | count = error; | |
2389 | } else { | |
7bed6805 ND |
2390 | dev_info(dev, "The firmware update succeeded\n"); |
2391 | ||
dd24dcf5 | 2392 | error = mxt_initialize(data); |
d79e7e47 BL |
2393 | if (error) |
2394 | return error; | |
2395 | } | |
08960a07 | 2396 | |
4cf51c38 JS |
2397 | return count; |
2398 | } | |
2399 | ||
b19fc9ec DK |
2400 | static DEVICE_ATTR(fw_version, S_IRUGO, mxt_fw_version_show, NULL); |
2401 | static DEVICE_ATTR(hw_version, S_IRUGO, mxt_hw_version_show, NULL); | |
71b3e938 DK |
2402 | static DEVICE_ATTR(object, S_IRUGO, mxt_object_show, NULL); |
2403 | static DEVICE_ATTR(update_fw, S_IWUSR, NULL, mxt_update_fw_store); | |
4cf51c38 | 2404 | |
7686b108 | 2405 | static struct attribute *mxt_attrs[] = { |
b19fc9ec DK |
2406 | &dev_attr_fw_version.attr, |
2407 | &dev_attr_hw_version.attr, | |
4cf51c38 JS |
2408 | &dev_attr_object.attr, |
2409 | &dev_attr_update_fw.attr, | |
2410 | NULL | |
2411 | }; | |
2412 | ||
7686b108 IV |
2413 | static const struct attribute_group mxt_attr_group = { |
2414 | .attrs = mxt_attrs, | |
4cf51c38 JS |
2415 | }; |
2416 | ||
7686b108 | 2417 | static void mxt_start(struct mxt_data *data) |
4cf51c38 | 2418 | { |
7f3884f7 ND |
2419 | switch (data->pdata->suspend_mode) { |
2420 | case MXT_SUSPEND_T9_CTRL: | |
2421 | mxt_soft_reset(data); | |
2422 | ||
2423 | /* Touch enable */ | |
2424 | /* 0x83 = SCANEN | RPTEN | ENABLE */ | |
2425 | mxt_write_object(data, | |
2426 | MXT_TOUCH_MULTI_T9, MXT_T9_CTRL, 0x83); | |
2427 | break; | |
2428 | ||
2429 | case MXT_SUSPEND_DEEP_SLEEP: | |
2430 | default: | |
2431 | mxt_set_t7_power_cfg(data, MXT_POWER_CFG_RUN); | |
2432 | ||
2433 | /* Recalibrate since chip has been in deep sleep */ | |
2434 | mxt_t6_command(data, MXT_COMMAND_CALIBRATE, 1, false); | |
2435 | break; | |
2436 | } | |
2437 | ||
4cf51c38 JS |
2438 | } |
2439 | ||
7686b108 | 2440 | static void mxt_stop(struct mxt_data *data) |
4cf51c38 | 2441 | { |
7f3884f7 ND |
2442 | switch (data->pdata->suspend_mode) { |
2443 | case MXT_SUSPEND_T9_CTRL: | |
2444 | /* Touch disable */ | |
2445 | mxt_write_object(data, | |
2446 | MXT_TOUCH_MULTI_T9, MXT_T9_CTRL, 0); | |
2447 | break; | |
2448 | ||
2449 | case MXT_SUSPEND_DEEP_SLEEP: | |
2450 | default: | |
2451 | mxt_set_t7_power_cfg(data, MXT_POWER_CFG_DEEPSLEEP); | |
2452 | break; | |
2453 | } | |
4cf51c38 JS |
2454 | } |
2455 | ||
7686b108 | 2456 | static int mxt_input_open(struct input_dev *dev) |
4cf51c38 | 2457 | { |
7686b108 | 2458 | struct mxt_data *data = input_get_drvdata(dev); |
4cf51c38 | 2459 | |
7686b108 | 2460 | mxt_start(data); |
4cf51c38 JS |
2461 | |
2462 | return 0; | |
2463 | } | |
2464 | ||
7686b108 | 2465 | static void mxt_input_close(struct input_dev *dev) |
4cf51c38 | 2466 | { |
7686b108 | 2467 | struct mxt_data *data = input_get_drvdata(dev); |
4cf51c38 | 2468 | |
7686b108 | 2469 | mxt_stop(data); |
4cf51c38 JS |
2470 | } |
2471 | ||
78188be3 | 2472 | #ifdef CONFIG_OF |
4f8d8088 | 2473 | static const struct mxt_platform_data *mxt_parse_dt(struct i2c_client *client) |
78188be3 SW |
2474 | { |
2475 | struct mxt_platform_data *pdata; | |
2476 | u32 *keymap; | |
2477 | u32 keycode; | |
2478 | int proplen, i, ret; | |
2479 | ||
2480 | if (!client->dev.of_node) | |
4f8d8088 | 2481 | return ERR_PTR(-ENOENT); |
78188be3 SW |
2482 | |
2483 | pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL); | |
2484 | if (!pdata) | |
2485 | return ERR_PTR(-ENOMEM); | |
2486 | ||
2487 | if (of_find_property(client->dev.of_node, "linux,gpio-keymap", | |
2488 | &proplen)) { | |
2489 | pdata->t19_num_keys = proplen / sizeof(u32); | |
2490 | ||
2491 | keymap = devm_kzalloc(&client->dev, | |
2492 | pdata->t19_num_keys * sizeof(keymap[0]), | |
2493 | GFP_KERNEL); | |
2494 | if (!keymap) | |
2495 | return ERR_PTR(-ENOMEM); | |
2496 | ||
2497 | for (i = 0; i < pdata->t19_num_keys; i++) { | |
2498 | ret = of_property_read_u32_index(client->dev.of_node, | |
2499 | "linux,gpio-keymap", i, &keycode); | |
2500 | if (ret) | |
2501 | keycode = KEY_RESERVED; | |
2502 | ||
2503 | keymap[i] = keycode; | |
2504 | } | |
2505 | ||
2506 | pdata->t19_keymap = keymap; | |
2507 | } | |
2508 | ||
7f3884f7 ND |
2509 | pdata->suspend_mode = MXT_SUSPEND_DEEP_SLEEP; |
2510 | ||
78188be3 SW |
2511 | return pdata; |
2512 | } | |
2513 | #else | |
4f8d8088 | 2514 | static const struct mxt_platform_data *mxt_parse_dt(struct i2c_client *client) |
78188be3 | 2515 | { |
4f8d8088 DT |
2516 | return ERR_PTR(-ENOENT); |
2517 | } | |
2518 | #endif | |
2519 | ||
2520 | #ifdef CONFIG_ACPI | |
2521 | ||
2522 | struct mxt_acpi_platform_data { | |
2523 | const char *hid; | |
2524 | struct mxt_platform_data pdata; | |
2525 | }; | |
2526 | ||
2527 | static unsigned int samus_touchpad_buttons[] = { | |
2528 | KEY_RESERVED, | |
2529 | KEY_RESERVED, | |
2530 | KEY_RESERVED, | |
2531 | BTN_LEFT | |
2532 | }; | |
2533 | ||
2534 | static struct mxt_acpi_platform_data samus_platform_data[] = { | |
2535 | { | |
2536 | /* Touchpad */ | |
2537 | .hid = "ATML0000", | |
2538 | .pdata = { | |
2539 | .t19_num_keys = ARRAY_SIZE(samus_touchpad_buttons), | |
2540 | .t19_keymap = samus_touchpad_buttons, | |
2541 | }, | |
2542 | }, | |
2543 | { | |
2544 | /* Touchscreen */ | |
2545 | .hid = "ATML0001", | |
2546 | }, | |
2547 | { } | |
2548 | }; | |
2549 | ||
2550 | static const struct dmi_system_id mxt_dmi_table[] = { | |
2551 | { | |
2552 | /* 2015 Google Pixel */ | |
2553 | .ident = "Chromebook Pixel 2", | |
2554 | .matches = { | |
2555 | DMI_MATCH(DMI_SYS_VENDOR, "GOOGLE"), | |
2556 | DMI_MATCH(DMI_PRODUCT_NAME, "Samus"), | |
2557 | }, | |
2558 | .driver_data = samus_platform_data, | |
2559 | }, | |
2560 | { } | |
2561 | }; | |
2562 | ||
2563 | static const struct mxt_platform_data *mxt_parse_acpi(struct i2c_client *client) | |
2564 | { | |
2565 | struct acpi_device *adev; | |
2566 | const struct dmi_system_id *system_id; | |
2567 | const struct mxt_acpi_platform_data *acpi_pdata; | |
2568 | ||
2569 | /* | |
2570 | * Ignore ACPI devices representing bootloader mode. | |
2571 | * | |
2572 | * This is a bit of a hack: Google Chromebook BIOS creates ACPI | |
2573 | * devices for both application and bootloader modes, but we are | |
2574 | * interested in application mode only (if device is in bootloader | |
2575 | * mode we'll end up switching into application anyway). So far | |
2576 | * application mode addresses were all above 0x40, so we'll use it | |
2577 | * as a threshold. | |
2578 | */ | |
2579 | if (client->addr < 0x40) | |
2580 | return ERR_PTR(-ENXIO); | |
2581 | ||
2582 | adev = ACPI_COMPANION(&client->dev); | |
2583 | if (!adev) | |
2584 | return ERR_PTR(-ENOENT); | |
2585 | ||
2586 | system_id = dmi_first_match(mxt_dmi_table); | |
2587 | if (!system_id) | |
2588 | return ERR_PTR(-ENOENT); | |
2589 | ||
2590 | acpi_pdata = system_id->driver_data; | |
2591 | if (!acpi_pdata) | |
2592 | return ERR_PTR(-ENOENT); | |
2593 | ||
2594 | while (acpi_pdata->hid) { | |
2595 | if (!strcmp(acpi_device_hid(adev), acpi_pdata->hid)) | |
2596 | return &acpi_pdata->pdata; | |
2597 | ||
2598 | acpi_pdata++; | |
2599 | } | |
2600 | ||
2601 | return ERR_PTR(-ENOENT); | |
2602 | } | |
2603 | #else | |
2604 | static const struct mxt_platform_data *mxt_parse_acpi(struct i2c_client *client) | |
2605 | { | |
2606 | return ERR_PTR(-ENOENT); | |
78188be3 SW |
2607 | } |
2608 | #endif | |
2609 | ||
4f8d8088 DT |
2610 | static const struct mxt_platform_data * |
2611 | mxt_get_platform_data(struct i2c_client *client) | |
2612 | { | |
2613 | const struct mxt_platform_data *pdata; | |
2614 | ||
2615 | pdata = dev_get_platdata(&client->dev); | |
2616 | if (pdata) | |
2617 | return pdata; | |
2618 | ||
2619 | pdata = mxt_parse_dt(client); | |
2620 | if (!IS_ERR(pdata) || PTR_ERR(pdata) != -ENOENT) | |
2621 | return pdata; | |
2622 | ||
2623 | pdata = mxt_parse_acpi(client); | |
2624 | if (!IS_ERR(pdata) || PTR_ERR(pdata) != -ENOENT) | |
2625 | return pdata; | |
2626 | ||
2627 | dev_err(&client->dev, "No platform data specified\n"); | |
2628 | return ERR_PTR(-EINVAL); | |
2629 | } | |
2630 | ||
78188be3 | 2631 | static int mxt_probe(struct i2c_client *client, const struct i2c_device_id *id) |
4cf51c38 | 2632 | { |
7686b108 | 2633 | struct mxt_data *data; |
78188be3 | 2634 | const struct mxt_platform_data *pdata; |
4cf51c38 JS |
2635 | int error; |
2636 | ||
4f8d8088 DT |
2637 | pdata = mxt_get_platform_data(client); |
2638 | if (IS_ERR(pdata)) | |
2639 | return PTR_ERR(pdata); | |
4cf51c38 | 2640 | |
7686b108 | 2641 | data = kzalloc(sizeof(struct mxt_data), GFP_KERNEL); |
7a53d609 | 2642 | if (!data) { |
4cf51c38 | 2643 | dev_err(&client->dev, "Failed to allocate memory\n"); |
7a53d609 | 2644 | return -ENOMEM; |
4cf51c38 JS |
2645 | } |
2646 | ||
ec02ac2b DK |
2647 | snprintf(data->phys, sizeof(data->phys), "i2c-%u-%04x/input0", |
2648 | client->adapter->nr, client->addr); | |
22dfab7f | 2649 | |
910d8051 | 2650 | data->client = client; |
910d8051 JS |
2651 | data->pdata = pdata; |
2652 | data->irq = client->irq; | |
7a53d609 | 2653 | i2c_set_clientdata(client, data); |
910d8051 | 2654 | |
d79e7e47 | 2655 | init_completion(&data->bl_completion); |
a4a2ef46 | 2656 | init_completion(&data->reset_completion); |
c3f78043 | 2657 | init_completion(&data->crc_completion); |
d79e7e47 | 2658 | |
dd24dcf5 ND |
2659 | error = request_threaded_irq(client->irq, NULL, mxt_interrupt, |
2660 | pdata->irqflags | IRQF_ONESHOT, | |
2661 | client->name, data); | |
2662 | if (error) { | |
2663 | dev_err(&client->dev, "Failed to register interrupt\n"); | |
2664 | goto err_free_mem; | |
2665 | } | |
2666 | ||
2667 | disable_irq(client->irq); | |
2668 | ||
cb159115 DK |
2669 | error = mxt_initialize(data); |
2670 | if (error) | |
7a53d609 | 2671 | goto err_free_irq; |
4cf51c38 | 2672 | |
7686b108 | 2673 | error = sysfs_create_group(&client->dev.kobj, &mxt_attr_group); |
7bed6805 ND |
2674 | if (error) { |
2675 | dev_err(&client->dev, "Failure %d creating sysfs group\n", | |
2676 | error); | |
7a53d609 | 2677 | goto err_free_object; |
7bed6805 | 2678 | } |
4cf51c38 JS |
2679 | |
2680 | return 0; | |
2681 | ||
4cf51c38 | 2682 | err_free_object: |
58e4aeee | 2683 | mxt_free_input_device(data); |
5f3f9bc2 | 2684 | mxt_free_object_table(data); |
dd24dcf5 ND |
2685 | err_free_irq: |
2686 | free_irq(client->irq, data); | |
4cf51c38 | 2687 | err_free_mem: |
4cf51c38 JS |
2688 | kfree(data); |
2689 | return error; | |
2690 | } | |
2691 | ||
e2619cf7 | 2692 | static int mxt_remove(struct i2c_client *client) |
4cf51c38 | 2693 | { |
7686b108 | 2694 | struct mxt_data *data = i2c_get_clientdata(client); |
4cf51c38 | 2695 | |
7686b108 | 2696 | sysfs_remove_group(&client->dev.kobj, &mxt_attr_group); |
4cf51c38 | 2697 | free_irq(data->irq, data); |
58e4aeee | 2698 | mxt_free_input_device(data); |
5f3f9bc2 | 2699 | mxt_free_object_table(data); |
4cf51c38 JS |
2700 | kfree(data); |
2701 | ||
2702 | return 0; | |
2703 | } | |
2704 | ||
02b6a58b | 2705 | static int __maybe_unused mxt_suspend(struct device *dev) |
4cf51c38 | 2706 | { |
8b5fce06 | 2707 | struct i2c_client *client = to_i2c_client(dev); |
7686b108 | 2708 | struct mxt_data *data = i2c_get_clientdata(client); |
4cf51c38 JS |
2709 | struct input_dev *input_dev = data->input_dev; |
2710 | ||
2711 | mutex_lock(&input_dev->mutex); | |
2712 | ||
2713 | if (input_dev->users) | |
7686b108 | 2714 | mxt_stop(data); |
4cf51c38 JS |
2715 | |
2716 | mutex_unlock(&input_dev->mutex); | |
2717 | ||
2718 | return 0; | |
2719 | } | |
2720 | ||
02b6a58b | 2721 | static int __maybe_unused mxt_resume(struct device *dev) |
4cf51c38 | 2722 | { |
8b5fce06 | 2723 | struct i2c_client *client = to_i2c_client(dev); |
7686b108 | 2724 | struct mxt_data *data = i2c_get_clientdata(client); |
4cf51c38 JS |
2725 | struct input_dev *input_dev = data->input_dev; |
2726 | ||
4cf51c38 JS |
2727 | mutex_lock(&input_dev->mutex); |
2728 | ||
2729 | if (input_dev->users) | |
7686b108 | 2730 | mxt_start(data); |
4cf51c38 JS |
2731 | |
2732 | mutex_unlock(&input_dev->mutex); | |
2733 | ||
2734 | return 0; | |
2735 | } | |
4cf51c38 | 2736 | |
3a73c816 DK |
2737 | static SIMPLE_DEV_PM_OPS(mxt_pm_ops, mxt_suspend, mxt_resume); |
2738 | ||
78188be3 SW |
2739 | static const struct of_device_id mxt_of_match[] = { |
2740 | { .compatible = "atmel,maxtouch", }, | |
2741 | {}, | |
2742 | }; | |
2743 | MODULE_DEVICE_TABLE(of, mxt_of_match); | |
2744 | ||
4f8d8088 DT |
2745 | #ifdef CONFIG_ACPI |
2746 | static const struct acpi_device_id mxt_acpi_id[] = { | |
2747 | { "ATML0000", 0 }, /* Touchpad */ | |
2748 | { "ATML0001", 0 }, /* Touchscreen */ | |
2749 | { } | |
2750 | }; | |
2751 | MODULE_DEVICE_TABLE(acpi, mxt_acpi_id); | |
2752 | #endif | |
2753 | ||
7686b108 | 2754 | static const struct i2c_device_id mxt_id[] = { |
4cf51c38 | 2755 | { "qt602240_ts", 0 }, |
7686b108 | 2756 | { "atmel_mxt_ts", 0 }, |
22dfab7f | 2757 | { "atmel_mxt_tp", 0 }, |
46ee2a05 | 2758 | { "mXT224", 0 }, |
4cf51c38 JS |
2759 | { } |
2760 | }; | |
7686b108 | 2761 | MODULE_DEVICE_TABLE(i2c, mxt_id); |
4cf51c38 | 2762 | |
7686b108 | 2763 | static struct i2c_driver mxt_driver = { |
4cf51c38 | 2764 | .driver = { |
7686b108 | 2765 | .name = "atmel_mxt_ts", |
78188be3 | 2766 | .of_match_table = of_match_ptr(mxt_of_match), |
4f8d8088 | 2767 | .acpi_match_table = ACPI_PTR(mxt_acpi_id), |
7686b108 | 2768 | .pm = &mxt_pm_ops, |
4cf51c38 | 2769 | }, |
7686b108 | 2770 | .probe = mxt_probe, |
1cb0aa88 | 2771 | .remove = mxt_remove, |
7686b108 | 2772 | .id_table = mxt_id, |
4cf51c38 JS |
2773 | }; |
2774 | ||
1b92c1cf | 2775 | module_i2c_driver(mxt_driver); |
4cf51c38 JS |
2776 | |
2777 | /* Module information */ | |
2778 | MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>"); | |
7686b108 | 2779 | MODULE_DESCRIPTION("Atmel maXTouch Touchscreen driver"); |
4cf51c38 | 2780 | MODULE_LICENSE("GPL"); |