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2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
4cf51c38 | 2 | /* |
7686b108 | 3 | * Atmel maXTouch Touchscreen driver |
4cf51c38 JS |
4 | * |
5 | * Copyright (C) 2010 Samsung Electronics Co.Ltd | |
50a77c65 | 6 | * Copyright (C) 2011-2014 Atmel Corporation |
1e0c0c5b | 7 | * Copyright (C) 2012 Google, Inc. |
f3c4a8f8 | 8 | * Copyright (C) 2016 Zodiac Inflight Innovations |
1e0c0c5b | 9 | * |
4cf51c38 | 10 | * Author: Joonyoung Shim <jy0922.shim@samsung.com> |
4cf51c38 JS |
11 | */ |
12 | ||
4f8d8088 DT |
13 | #include <linux/acpi.h> |
14 | #include <linux/dmi.h> | |
4cf51c38 | 15 | #include <linux/module.h> |
d79e7e47 BL |
16 | #include <linux/init.h> |
17 | #include <linux/completion.h> | |
4cf51c38 JS |
18 | #include <linux/delay.h> |
19 | #include <linux/firmware.h> | |
20 | #include <linux/i2c.h> | |
8b86c1c2 | 21 | #include <linux/input/mt.h> |
4cf51c38 | 22 | #include <linux/interrupt.h> |
78188be3 | 23 | #include <linux/of.h> |
96a938aa | 24 | #include <linux/property.h> |
4cf51c38 | 25 | #include <linux/slab.h> |
f657b00d | 26 | #include <linux/gpio/consumer.h> |
b23157dc | 27 | #include <asm/unaligned.h> |
ecfdd7e2 ND |
28 | #include <media/v4l2-device.h> |
29 | #include <media/v4l2-ioctl.h> | |
30 | #include <media/videobuf2-v4l2.h> | |
31 | #include <media/videobuf2-vmalloc.h> | |
4cf51c38 | 32 | |
50a77c65 | 33 | /* Firmware files */ |
7686b108 | 34 | #define MXT_FW_NAME "maxtouch.fw" |
50a77c65 ND |
35 | #define MXT_CFG_NAME "maxtouch.cfg" |
36 | #define MXT_CFG_MAGIC "OBP_RAW V1" | |
4cf51c38 JS |
37 | |
38 | /* Registers */ | |
7686b108 | 39 | #define MXT_OBJECT_START 0x07 |
7686b108 | 40 | #define MXT_OBJECT_SIZE 6 |
4ce6fa01 ND |
41 | #define MXT_INFO_CHECKSUM_SIZE 3 |
42 | #define MXT_MAX_BLOCK_WRITE 256 | |
4cf51c38 JS |
43 | |
44 | /* Object types */ | |
81c88a71 IV |
45 | #define MXT_DEBUG_DIAGNOSTIC_T37 37 |
46 | #define MXT_GEN_MESSAGE_T5 5 | |
47 | #define MXT_GEN_COMMAND_T6 6 | |
48 | #define MXT_GEN_POWER_T7 7 | |
49 | #define MXT_GEN_ACQUIRE_T8 8 | |
50 | #define MXT_GEN_DATASOURCE_T53 53 | |
51 | #define MXT_TOUCH_MULTI_T9 9 | |
52 | #define MXT_TOUCH_KEYARRAY_T15 15 | |
53 | #define MXT_TOUCH_PROXIMITY_T23 23 | |
54 | #define MXT_TOUCH_PROXKEY_T52 52 | |
55 | #define MXT_PROCI_GRIPFACE_T20 20 | |
56 | #define MXT_PROCG_NOISE_T22 22 | |
57 | #define MXT_PROCI_ONETOUCH_T24 24 | |
58 | #define MXT_PROCI_TWOTOUCH_T27 27 | |
59 | #define MXT_PROCI_GRIP_T40 40 | |
60 | #define MXT_PROCI_PALM_T41 41 | |
61 | #define MXT_PROCI_TOUCHSUPPRESSION_T42 42 | |
62 | #define MXT_PROCI_STYLUS_T47 47 | |
63 | #define MXT_PROCG_NOISESUPPRESSION_T48 48 | |
64 | #define MXT_SPT_COMMSCONFIG_T18 18 | |
65 | #define MXT_SPT_GPIOPWM_T19 19 | |
66 | #define MXT_SPT_SELFTEST_T25 25 | |
67 | #define MXT_SPT_CTECONFIG_T28 28 | |
68 | #define MXT_SPT_USERDATA_T38 38 | |
69 | #define MXT_SPT_DIGITIZER_T43 43 | |
70 | #define MXT_SPT_MESSAGECOUNT_T44 44 | |
71 | #define MXT_SPT_CTECONFIG_T46 46 | |
15082bdb | 72 | #define MXT_SPT_DYNAMICCONFIGURATIONCONTAINER_T71 71 |
b23157dc | 73 | #define MXT_TOUCH_MULTITOUCHSCREEN_T100 100 |
81c88a71 | 74 | |
5f3f9bc2 ND |
75 | /* MXT_GEN_MESSAGE_T5 object */ |
76 | #define MXT_RPTID_NOMSG 0xff | |
77 | ||
81c88a71 | 78 | /* MXT_GEN_COMMAND_T6 field */ |
7686b108 IV |
79 | #define MXT_COMMAND_RESET 0 |
80 | #define MXT_COMMAND_BACKUPNV 1 | |
81 | #define MXT_COMMAND_CALIBRATE 2 | |
82 | #define MXT_COMMAND_REPORTALL 3 | |
83 | #define MXT_COMMAND_DIAGNOSTIC 5 | |
84 | ||
a4a2ef46 | 85 | /* Define for T6 status byte */ |
204b4eae ND |
86 | #define MXT_T6_STATUS_RESET BIT(7) |
87 | #define MXT_T6_STATUS_OFL BIT(6) | |
88 | #define MXT_T6_STATUS_SIGERR BIT(5) | |
89 | #define MXT_T6_STATUS_CAL BIT(4) | |
90 | #define MXT_T6_STATUS_CFGERR BIT(3) | |
91 | #define MXT_T6_STATUS_COMSERR BIT(2) | |
a4a2ef46 | 92 | |
81c88a71 | 93 | /* MXT_GEN_POWER_T7 field */ |
7f3884f7 ND |
94 | struct t7_config { |
95 | u8 idle; | |
96 | u8 active; | |
97 | } __packed; | |
98 | ||
99 | #define MXT_POWER_CFG_RUN 0 | |
100 | #define MXT_POWER_CFG_DEEPSLEEP 1 | |
7686b108 | 101 | |
81c88a71 | 102 | /* MXT_TOUCH_MULTI_T9 field */ |
7f3884f7 | 103 | #define MXT_T9_CTRL 0 |
2786489f ND |
104 | #define MXT_T9_XSIZE 3 |
105 | #define MXT_T9_YSIZE 4 | |
61dc1aba ND |
106 | #define MXT_T9_ORIENT 9 |
107 | #define MXT_T9_RANGE 18 | |
108 | ||
f3889ed1 | 109 | /* MXT_TOUCH_MULTI_T9 status */ |
204b4eae ND |
110 | #define MXT_T9_UNGRIP BIT(0) |
111 | #define MXT_T9_SUPPRESS BIT(1) | |
112 | #define MXT_T9_AMP BIT(2) | |
113 | #define MXT_T9_VECTOR BIT(3) | |
114 | #define MXT_T9_MOVE BIT(4) | |
115 | #define MXT_T9_RELEASE BIT(5) | |
116 | #define MXT_T9_PRESS BIT(6) | |
117 | #define MXT_T9_DETECT BIT(7) | |
f3889ed1 | 118 | |
61dc1aba | 119 | struct t9_range { |
1c0276d5 ND |
120 | __le16 x; |
121 | __le16 y; | |
61dc1aba ND |
122 | } __packed; |
123 | ||
f3889ed1 | 124 | /* MXT_TOUCH_MULTI_T9 orient */ |
204b4eae ND |
125 | #define MXT_T9_ORIENT_SWITCH BIT(0) |
126 | #define MXT_T9_ORIENT_INVERTX BIT(1) | |
127 | #define MXT_T9_ORIENT_INVERTY BIT(2) | |
7686b108 | 128 | |
81c88a71 | 129 | /* MXT_SPT_COMMSCONFIG_T18 */ |
7686b108 IV |
130 | #define MXT_COMMS_CTRL 0 |
131 | #define MXT_COMMS_CMD 1 | |
132 | ||
d6a39404 ND |
133 | /* MXT_DEBUG_DIAGNOSTIC_T37 */ |
134 | #define MXT_DIAGNOSTIC_PAGEUP 0x01 | |
135 | #define MXT_DIAGNOSTIC_DELTAS 0x10 | |
06b3d3f3 | 136 | #define MXT_DIAGNOSTIC_REFS 0x11 |
d6a39404 ND |
137 | #define MXT_DIAGNOSTIC_SIZE 128 |
138 | ||
566d533a ND |
139 | #define MXT_FAMILY_1386 160 |
140 | #define MXT1386_COLUMNS 3 | |
141 | #define MXT1386_PAGES_PER_COLUMN 8 | |
142 | ||
d6a39404 ND |
143 | struct t37_debug { |
144 | #ifdef CONFIG_TOUCHSCREEN_ATMEL_MXT_T37 | |
145 | u8 mode; | |
146 | u8 page; | |
147 | u8 data[MXT_DIAGNOSTIC_SIZE]; | |
148 | #endif | |
149 | }; | |
150 | ||
81c88a71 | 151 | /* Define for MXT_GEN_COMMAND_T6 */ |
7686b108 | 152 | #define MXT_BOOT_VALUE 0xa5 |
a4a2ef46 | 153 | #define MXT_RESET_VALUE 0x01 |
7686b108 | 154 | #define MXT_BACKUP_VALUE 0x55 |
a4a2ef46 | 155 | |
b23157dc ND |
156 | /* T100 Multiple Touch Touchscreen */ |
157 | #define MXT_T100_CTRL 0 | |
158 | #define MXT_T100_CFG1 1 | |
159 | #define MXT_T100_TCHAUX 3 | |
2786489f | 160 | #define MXT_T100_XSIZE 9 |
b23157dc | 161 | #define MXT_T100_XRANGE 13 |
2786489f | 162 | #define MXT_T100_YSIZE 20 |
b23157dc ND |
163 | #define MXT_T100_YRANGE 24 |
164 | ||
165 | #define MXT_T100_CFG_SWITCHXY BIT(5) | |
de601f71 ND |
166 | #define MXT_T100_CFG_INVERTY BIT(6) |
167 | #define MXT_T100_CFG_INVERTX BIT(7) | |
b23157dc ND |
168 | |
169 | #define MXT_T100_TCHAUX_VECT BIT(0) | |
170 | #define MXT_T100_TCHAUX_AMPL BIT(1) | |
171 | #define MXT_T100_TCHAUX_AREA BIT(2) | |
172 | ||
173 | #define MXT_T100_DETECT BIT(7) | |
174 | #define MXT_T100_TYPE_MASK 0x70 | |
175 | ||
176 | enum t100_type { | |
177 | MXT_T100_TYPE_FINGER = 1, | |
178 | MXT_T100_TYPE_PASSIVE_STYLUS = 2, | |
179 | MXT_T100_TYPE_HOVERING_FINGER = 4, | |
180 | MXT_T100_TYPE_GLOVE = 5, | |
181 | MXT_T100_TYPE_LARGE_TOUCH = 6, | |
182 | }; | |
183 | ||
184 | #define MXT_DISTANCE_ACTIVE_TOUCH 0 | |
185 | #define MXT_DISTANCE_HOVERING 1 | |
186 | ||
187 | #define MXT_TOUCH_MAJOR_DEFAULT 1 | |
188 | #define MXT_PRESSURE_DEFAULT 1 | |
189 | ||
a4a2ef46 | 190 | /* Delay times */ |
8343bce1 | 191 | #define MXT_BACKUP_TIME 50 /* msec */ |
ca1cd36c SR |
192 | #define MXT_RESET_GPIO_TIME 20 /* msec */ |
193 | #define MXT_RESET_INVALID_CHG 100 /* msec */ | |
8343bce1 | 194 | #define MXT_RESET_TIME 200 /* msec */ |
a4a2ef46 | 195 | #define MXT_RESET_TIMEOUT 3000 /* msec */ |
c3f78043 | 196 | #define MXT_CRC_TIMEOUT 1000 /* msec */ |
a0434b75 BL |
197 | #define MXT_FW_RESET_TIME 3000 /* msec */ |
198 | #define MXT_FW_CHG_TIMEOUT 300 /* msec */ | |
4cf51c38 JS |
199 | |
200 | /* Command to unlock bootloader */ | |
7686b108 IV |
201 | #define MXT_UNLOCK_CMD_MSB 0xaa |
202 | #define MXT_UNLOCK_CMD_LSB 0xdc | |
4cf51c38 JS |
203 | |
204 | /* Bootloader mode status */ | |
7686b108 IV |
205 | #define MXT_WAITING_BOOTLOAD_CMD 0xc0 /* valid 7 6 bit only */ |
206 | #define MXT_WAITING_FRAME_DATA 0x80 /* valid 7 6 bit only */ | |
207 | #define MXT_FRAME_CRC_CHECK 0x02 | |
208 | #define MXT_FRAME_CRC_FAIL 0x03 | |
209 | #define MXT_FRAME_CRC_PASS 0x04 | |
210 | #define MXT_APP_CRC_FAIL 0x40 /* valid 7 8 bit only */ | |
211 | #define MXT_BOOT_STATUS_MASK 0x3f | |
204b4eae | 212 | #define MXT_BOOT_EXTENDED_ID BIT(5) |
e57a66aa | 213 | #define MXT_BOOT_ID_MASK 0x1f |
4cf51c38 | 214 | |
4cf51c38 | 215 | /* Touchscreen absolute values */ |
7686b108 | 216 | #define MXT_MAX_AREA 0xff |
4cf51c38 | 217 | |
22dfab7f DK |
218 | #define MXT_PIXELS_PER_MM 20 |
219 | ||
7686b108 | 220 | struct mxt_info { |
4cf51c38 JS |
221 | u8 family_id; |
222 | u8 variant_id; | |
223 | u8 version; | |
224 | u8 build; | |
225 | u8 matrix_xsize; | |
226 | u8 matrix_ysize; | |
227 | u8 object_num; | |
228 | }; | |
229 | ||
7686b108 | 230 | struct mxt_object { |
4cf51c38 JS |
231 | u8 type; |
232 | u16 start_address; | |
1e0c0c5b DK |
233 | u8 size_minus_one; |
234 | u8 instances_minus_one; | |
4cf51c38 | 235 | u8 num_report_ids; |
333e5a9a | 236 | } __packed; |
4cf51c38 | 237 | |
d6a39404 ND |
238 | struct mxt_dbg { |
239 | u16 t37_address; | |
240 | u16 diag_cmd_address; | |
241 | struct t37_debug *t37_buf; | |
242 | unsigned int t37_pages; | |
243 | unsigned int t37_nodes; | |
ecfdd7e2 ND |
244 | |
245 | struct v4l2_device v4l2; | |
246 | struct v4l2_pix_format format; | |
247 | struct video_device vdev; | |
248 | struct vb2_queue queue; | |
249 | struct mutex lock; | |
250 | int input; | |
251 | }; | |
252 | ||
06b3d3f3 ND |
253 | enum v4l_dbg_inputs { |
254 | MXT_V4L_INPUT_DELTAS, | |
255 | MXT_V4L_INPUT_REFS, | |
256 | MXT_V4L_INPUT_MAX, | |
257 | }; | |
258 | ||
ecfdd7e2 ND |
259 | static const struct v4l2_file_operations mxt_video_fops = { |
260 | .owner = THIS_MODULE, | |
261 | .open = v4l2_fh_open, | |
262 | .release = vb2_fop_release, | |
263 | .unlocked_ioctl = video_ioctl2, | |
264 | .read = vb2_fop_read, | |
265 | .mmap = vb2_fop_mmap, | |
266 | .poll = vb2_fop_poll, | |
d6a39404 ND |
267 | }; |
268 | ||
96a938aa DT |
269 | enum mxt_suspend_mode { |
270 | MXT_SUSPEND_DEEP_SLEEP = 0, | |
271 | MXT_SUSPEND_T9_CTRL = 1, | |
272 | }; | |
273 | ||
f865df73 ND |
274 | /* Config update context */ |
275 | struct mxt_cfg { | |
a4891f10 | 276 | u8 *raw; |
f865df73 ND |
277 | size_t raw_size; |
278 | off_t raw_pos; | |
279 | ||
280 | u8 *mem; | |
281 | size_t mem_size; | |
282 | int start_ofs; | |
283 | ||
284 | struct mxt_info info; | |
285 | }; | |
286 | ||
4cf51c38 | 287 | /* Each client has this additional data */ |
7686b108 | 288 | struct mxt_data { |
4cf51c38 JS |
289 | struct i2c_client *client; |
290 | struct input_dev *input_dev; | |
ec02ac2b | 291 | char phys[64]; /* device physical location */ |
7686b108 | 292 | struct mxt_object *object_table; |
068bdb67 ND |
293 | struct mxt_info *info; |
294 | void *raw_info_block; | |
4cf51c38 | 295 | unsigned int irq; |
910d8051 JS |
296 | unsigned int max_x; |
297 | unsigned int max_y; | |
de601f71 ND |
298 | bool invertx; |
299 | bool inverty; | |
1c0276d5 | 300 | bool xy_switch; |
2786489f ND |
301 | u8 xsize; |
302 | u8 ysize; | |
d79e7e47 | 303 | bool in_bootloader; |
4ce6fa01 | 304 | u16 mem_size; |
b23157dc ND |
305 | u8 t100_aux_ampl; |
306 | u8 t100_aux_area; | |
307 | u8 t100_aux_vect; | |
9d8dc3e5 | 308 | u8 max_reportid; |
c3f78043 | 309 | u32 config_crc; |
4ce6fa01 | 310 | u32 info_crc; |
f28a842d | 311 | u8 bootloader_addr; |
5f3f9bc2 | 312 | u8 *msg_buf; |
497767d1 | 313 | u8 t6_status; |
b9b05a89 | 314 | bool update_input; |
9d8dc3e5 ND |
315 | u8 last_message_count; |
316 | u8 num_touchids; | |
b23157dc | 317 | u8 multitouch; |
7f3884f7 | 318 | struct t7_config t7_cfg; |
d6a39404 | 319 | struct mxt_dbg dbg; |
f657b00d | 320 | struct gpio_desc *reset_gpio; |
333e5a9a DK |
321 | |
322 | /* Cached parameters from object table */ | |
b9b05a89 | 323 | u16 T5_address; |
5f3f9bc2 | 324 | u8 T5_msg_size; |
fdf80421 | 325 | u8 T6_reportid; |
a4a2ef46 | 326 | u16 T6_address; |
4ce6fa01 | 327 | u16 T7_address; |
15082bdb | 328 | u16 T71_address; |
333e5a9a DK |
329 | u8 T9_reportid_min; |
330 | u8 T9_reportid_max; | |
22dfab7f | 331 | u8 T19_reportid; |
9d8dc3e5 | 332 | u16 T44_address; |
b23157dc ND |
333 | u8 T100_reportid_min; |
334 | u8 T100_reportid_max; | |
d79e7e47 BL |
335 | |
336 | /* for fw update in bootloader */ | |
337 | struct completion bl_completion; | |
a4a2ef46 IV |
338 | |
339 | /* for reset handling */ | |
340 | struct completion reset_completion; | |
c3f78043 ND |
341 | |
342 | /* for config update handling */ | |
343 | struct completion crc_completion; | |
d80808e1 | 344 | |
96a938aa DT |
345 | u32 *t19_keymap; |
346 | unsigned int t19_num_keys; | |
347 | ||
d80808e1 | 348 | enum mxt_suspend_mode suspend_mode; |
4cf51c38 JS |
349 | }; |
350 | ||
ecfdd7e2 ND |
351 | struct mxt_vb2_buffer { |
352 | struct vb2_buffer vb; | |
353 | struct list_head list; | |
354 | }; | |
355 | ||
1e0c0c5b DK |
356 | static size_t mxt_obj_size(const struct mxt_object *obj) |
357 | { | |
358 | return obj->size_minus_one + 1; | |
359 | } | |
360 | ||
361 | static size_t mxt_obj_instances(const struct mxt_object *obj) | |
362 | { | |
363 | return obj->instances_minus_one + 1; | |
364 | } | |
365 | ||
7686b108 | 366 | static bool mxt_object_readable(unsigned int type) |
4cf51c38 JS |
367 | { |
368 | switch (type) { | |
81c88a71 IV |
369 | case MXT_GEN_COMMAND_T6: |
370 | case MXT_GEN_POWER_T7: | |
371 | case MXT_GEN_ACQUIRE_T8: | |
372 | case MXT_GEN_DATASOURCE_T53: | |
373 | case MXT_TOUCH_MULTI_T9: | |
374 | case MXT_TOUCH_KEYARRAY_T15: | |
375 | case MXT_TOUCH_PROXIMITY_T23: | |
376 | case MXT_TOUCH_PROXKEY_T52: | |
089b50d9 | 377 | case MXT_TOUCH_MULTITOUCHSCREEN_T100: |
81c88a71 IV |
378 | case MXT_PROCI_GRIPFACE_T20: |
379 | case MXT_PROCG_NOISE_T22: | |
380 | case MXT_PROCI_ONETOUCH_T24: | |
381 | case MXT_PROCI_TWOTOUCH_T27: | |
382 | case MXT_PROCI_GRIP_T40: | |
383 | case MXT_PROCI_PALM_T41: | |
384 | case MXT_PROCI_TOUCHSUPPRESSION_T42: | |
385 | case MXT_PROCI_STYLUS_T47: | |
386 | case MXT_PROCG_NOISESUPPRESSION_T48: | |
387 | case MXT_SPT_COMMSCONFIG_T18: | |
388 | case MXT_SPT_GPIOPWM_T19: | |
389 | case MXT_SPT_SELFTEST_T25: | |
390 | case MXT_SPT_CTECONFIG_T28: | |
391 | case MXT_SPT_USERDATA_T38: | |
392 | case MXT_SPT_DIGITIZER_T43: | |
393 | case MXT_SPT_CTECONFIG_T46: | |
15082bdb | 394 | case MXT_SPT_DYNAMICCONFIGURATIONCONTAINER_T71: |
4cf51c38 JS |
395 | return true; |
396 | default: | |
397 | return false; | |
398 | } | |
399 | } | |
400 | ||
5f3f9bc2 | 401 | static void mxt_dump_message(struct mxt_data *data, u8 *message) |
4cf51c38 | 402 | { |
5f3f9bc2 ND |
403 | dev_dbg(&data->client->dev, "message: %*ph\n", |
404 | data->T5_msg_size, message); | |
4cf51c38 JS |
405 | } |
406 | ||
a4a2ef46 IV |
407 | static int mxt_wait_for_completion(struct mxt_data *data, |
408 | struct completion *comp, | |
409 | unsigned int timeout_ms) | |
d79e7e47 BL |
410 | { |
411 | struct device *dev = &data->client->dev; | |
d79e7e47 BL |
412 | unsigned long timeout = msecs_to_jiffies(timeout_ms); |
413 | long ret; | |
414 | ||
415 | ret = wait_for_completion_interruptible_timeout(comp, timeout); | |
416 | if (ret < 0) { | |
417 | return ret; | |
418 | } else if (ret == 0) { | |
419 | dev_err(dev, "Wait for completion timed out.\n"); | |
420 | return -ETIMEDOUT; | |
421 | } | |
422 | return 0; | |
423 | } | |
424 | ||
f28a842d ND |
425 | static int mxt_bootloader_read(struct mxt_data *data, |
426 | u8 *val, unsigned int count) | |
427 | { | |
428 | int ret; | |
429 | struct i2c_msg msg; | |
430 | ||
431 | msg.addr = data->bootloader_addr; | |
432 | msg.flags = data->client->flags & I2C_M_TEN; | |
433 | msg.flags |= I2C_M_RD; | |
434 | msg.len = count; | |
435 | msg.buf = val; | |
436 | ||
437 | ret = i2c_transfer(data->client->adapter, &msg, 1); | |
f28a842d ND |
438 | if (ret == 1) { |
439 | ret = 0; | |
440 | } else { | |
441 | ret = ret < 0 ? ret : -EIO; | |
442 | dev_err(&data->client->dev, "%s: i2c recv failed (%d)\n", | |
443 | __func__, ret); | |
444 | } | |
445 | ||
446 | return ret; | |
447 | } | |
448 | ||
449 | static int mxt_bootloader_write(struct mxt_data *data, | |
450 | const u8 * const val, unsigned int count) | |
451 | { | |
452 | int ret; | |
453 | struct i2c_msg msg; | |
454 | ||
455 | msg.addr = data->bootloader_addr; | |
456 | msg.flags = data->client->flags & I2C_M_TEN; | |
457 | msg.len = count; | |
458 | msg.buf = (u8 *)val; | |
459 | ||
460 | ret = i2c_transfer(data->client->adapter, &msg, 1); | |
461 | if (ret == 1) { | |
462 | ret = 0; | |
463 | } else { | |
464 | ret = ret < 0 ? ret : -EIO; | |
465 | dev_err(&data->client->dev, "%s: i2c send failed (%d)\n", | |
466 | __func__, ret); | |
467 | } | |
468 | ||
469 | return ret; | |
470 | } | |
471 | ||
8efaa5e5 | 472 | static int mxt_lookup_bootloader_address(struct mxt_data *data, bool retry) |
f28a842d ND |
473 | { |
474 | u8 appmode = data->client->addr; | |
475 | u8 bootloader; | |
068bdb67 | 476 | u8 family_id = data->info ? data->info->family_id : 0; |
f28a842d ND |
477 | |
478 | switch (appmode) { | |
479 | case 0x4a: | |
480 | case 0x4b: | |
44a0bab2 | 481 | /* Chips after 1664S use different scheme */ |
068bdb67 | 482 | if (retry || family_id >= 0xa2) { |
44a0bab2 ND |
483 | bootloader = appmode - 0x24; |
484 | break; | |
485 | } | |
03bf6781 | 486 | /* Fall through - for normal case */ |
f28a842d ND |
487 | case 0x4c: |
488 | case 0x4d: | |
489 | case 0x5a: | |
490 | case 0x5b: | |
491 | bootloader = appmode - 0x26; | |
492 | break; | |
6cd1ab0f | 493 | |
f28a842d ND |
494 | default: |
495 | dev_err(&data->client->dev, | |
496 | "Appmode i2c address 0x%02x not found\n", | |
497 | appmode); | |
498 | return -EINVAL; | |
499 | } | |
500 | ||
501 | data->bootloader_addr = bootloader; | |
502 | return 0; | |
503 | } | |
504 | ||
6cd1ab0f | 505 | static int mxt_probe_bootloader(struct mxt_data *data, bool alt_address) |
a9fdd1e6 ND |
506 | { |
507 | struct device *dev = &data->client->dev; | |
6cd1ab0f | 508 | int error; |
a9fdd1e6 ND |
509 | u8 val; |
510 | bool crc_failure; | |
511 | ||
6cd1ab0f DT |
512 | error = mxt_lookup_bootloader_address(data, alt_address); |
513 | if (error) | |
514 | return error; | |
a9fdd1e6 | 515 | |
6cd1ab0f DT |
516 | error = mxt_bootloader_read(data, &val, 1); |
517 | if (error) | |
518 | return error; | |
a9fdd1e6 ND |
519 | |
520 | /* Check app crc fail mode */ | |
521 | crc_failure = (val & ~MXT_BOOT_STATUS_MASK) == MXT_APP_CRC_FAIL; | |
522 | ||
523 | dev_err(dev, "Detected bootloader, status:%02X%s\n", | |
524 | val, crc_failure ? ", APP_CRC_FAIL" : ""); | |
525 | ||
526 | return 0; | |
527 | } | |
528 | ||
e57a66aa ND |
529 | static u8 mxt_get_bootloader_version(struct mxt_data *data, u8 val) |
530 | { | |
531 | struct device *dev = &data->client->dev; | |
532 | u8 buf[3]; | |
533 | ||
534 | if (val & MXT_BOOT_EXTENDED_ID) { | |
535 | if (mxt_bootloader_read(data, &buf[0], 3) != 0) { | |
536 | dev_err(dev, "%s: i2c failure\n", __func__); | |
68807a0c | 537 | return val; |
e57a66aa ND |
538 | } |
539 | ||
540 | dev_dbg(dev, "Bootloader ID:%d Version:%d\n", buf[1], buf[2]); | |
541 | ||
542 | return buf[0]; | |
543 | } else { | |
544 | dev_dbg(dev, "Bootloader ID:%d\n", val & MXT_BOOT_ID_MASK); | |
545 | ||
546 | return val; | |
547 | } | |
548 | } | |
549 | ||
385deb96 ND |
550 | static int mxt_check_bootloader(struct mxt_data *data, unsigned int state, |
551 | bool wait) | |
4cf51c38 | 552 | { |
f28a842d | 553 | struct device *dev = &data->client->dev; |
4cf51c38 | 554 | u8 val; |
d79e7e47 | 555 | int ret; |
4cf51c38 JS |
556 | |
557 | recheck: | |
385deb96 | 558 | if (wait) { |
d79e7e47 BL |
559 | /* |
560 | * In application update mode, the interrupt | |
561 | * line signals state transitions. We must wait for the | |
562 | * CHG assertion before reading the status byte. | |
563 | * Once the status byte has been read, the line is deasserted. | |
564 | */ | |
a4a2ef46 IV |
565 | ret = mxt_wait_for_completion(data, &data->bl_completion, |
566 | MXT_FW_CHG_TIMEOUT); | |
d79e7e47 BL |
567 | if (ret) { |
568 | /* | |
569 | * TODO: handle -ERESTARTSYS better by terminating | |
570 | * fw update process before returning to userspace | |
571 | * by writing length 0x000 to device (iff we are in | |
572 | * WAITING_FRAME_DATA state). | |
573 | */ | |
f28a842d | 574 | dev_err(dev, "Update wait error %d\n", ret); |
d79e7e47 BL |
575 | return ret; |
576 | } | |
577 | } | |
578 | ||
f28a842d ND |
579 | ret = mxt_bootloader_read(data, &val, 1); |
580 | if (ret) | |
581 | return ret; | |
4cf51c38 | 582 | |
e57a66aa ND |
583 | if (state == MXT_WAITING_BOOTLOAD_CMD) |
584 | val = mxt_get_bootloader_version(data, val); | |
585 | ||
4cf51c38 | 586 | switch (state) { |
7686b108 IV |
587 | case MXT_WAITING_BOOTLOAD_CMD: |
588 | case MXT_WAITING_FRAME_DATA: | |
a9fdd1e6 | 589 | case MXT_APP_CRC_FAIL: |
7686b108 | 590 | val &= ~MXT_BOOT_STATUS_MASK; |
4cf51c38 | 591 | break; |
7686b108 | 592 | case MXT_FRAME_CRC_PASS: |
f943c74a | 593 | if (val == MXT_FRAME_CRC_CHECK) { |
4cf51c38 | 594 | goto recheck; |
f943c74a ND |
595 | } else if (val == MXT_FRAME_CRC_FAIL) { |
596 | dev_err(dev, "Bootloader CRC fail\n"); | |
597 | return -EINVAL; | |
598 | } | |
4cf51c38 JS |
599 | break; |
600 | default: | |
601 | return -EINVAL; | |
602 | } | |
603 | ||
604 | if (val != state) { | |
f28a842d | 605 | dev_err(dev, "Invalid bootloader state %02X != %02X\n", |
7bed6805 | 606 | val, state); |
4cf51c38 JS |
607 | return -EINVAL; |
608 | } | |
609 | ||
610 | return 0; | |
611 | } | |
612 | ||
8efaa5e5 | 613 | static int mxt_send_bootloader_cmd(struct mxt_data *data, bool unlock) |
4cf51c38 | 614 | { |
f28a842d | 615 | int ret; |
4cf51c38 JS |
616 | u8 buf[2]; |
617 | ||
8efaa5e5 ND |
618 | if (unlock) { |
619 | buf[0] = MXT_UNLOCK_CMD_LSB; | |
620 | buf[1] = MXT_UNLOCK_CMD_MSB; | |
621 | } else { | |
622 | buf[0] = 0x01; | |
623 | buf[1] = 0x01; | |
624 | } | |
4cf51c38 | 625 | |
f28a842d ND |
626 | ret = mxt_bootloader_write(data, buf, 2); |
627 | if (ret) | |
628 | return ret; | |
4cf51c38 JS |
629 | |
630 | return 0; | |
631 | } | |
632 | ||
7686b108 | 633 | static int __mxt_read_reg(struct i2c_client *client, |
4cf51c38 JS |
634 | u16 reg, u16 len, void *val) |
635 | { | |
636 | struct i2c_msg xfer[2]; | |
637 | u8 buf[2]; | |
771733e3 | 638 | int ret; |
4cf51c38 JS |
639 | |
640 | buf[0] = reg & 0xff; | |
641 | buf[1] = (reg >> 8) & 0xff; | |
642 | ||
643 | /* Write register */ | |
644 | xfer[0].addr = client->addr; | |
645 | xfer[0].flags = 0; | |
646 | xfer[0].len = 2; | |
647 | xfer[0].buf = buf; | |
648 | ||
649 | /* Read data */ | |
650 | xfer[1].addr = client->addr; | |
651 | xfer[1].flags = I2C_M_RD; | |
652 | xfer[1].len = len; | |
653 | xfer[1].buf = val; | |
654 | ||
771733e3 DK |
655 | ret = i2c_transfer(client->adapter, xfer, 2); |
656 | if (ret == 2) { | |
657 | ret = 0; | |
658 | } else { | |
659 | if (ret >= 0) | |
660 | ret = -EIO; | |
661 | dev_err(&client->dev, "%s: i2c transfer failed (%d)\n", | |
662 | __func__, ret); | |
4cf51c38 JS |
663 | } |
664 | ||
771733e3 | 665 | return ret; |
4cf51c38 JS |
666 | } |
667 | ||
9638ab7c DK |
668 | static int __mxt_write_reg(struct i2c_client *client, u16 reg, u16 len, |
669 | const void *val) | |
4cf51c38 | 670 | { |
9638ab7c DK |
671 | u8 *buf; |
672 | size_t count; | |
771733e3 | 673 | int ret; |
4cf51c38 | 674 | |
9638ab7c DK |
675 | count = len + 2; |
676 | buf = kmalloc(count, GFP_KERNEL); | |
677 | if (!buf) | |
678 | return -ENOMEM; | |
4cf51c38 JS |
679 | |
680 | buf[0] = reg & 0xff; | |
681 | buf[1] = (reg >> 8) & 0xff; | |
9638ab7c | 682 | memcpy(&buf[2], val, len); |
4cf51c38 | 683 | |
9638ab7c DK |
684 | ret = i2c_master_send(client, buf, count); |
685 | if (ret == count) { | |
771733e3 DK |
686 | ret = 0; |
687 | } else { | |
688 | if (ret >= 0) | |
689 | ret = -EIO; | |
690 | dev_err(&client->dev, "%s: i2c send failed (%d)\n", | |
691 | __func__, ret); | |
4cf51c38 JS |
692 | } |
693 | ||
9638ab7c | 694 | kfree(buf); |
771733e3 | 695 | return ret; |
4cf51c38 JS |
696 | } |
697 | ||
9638ab7c | 698 | static int mxt_write_reg(struct i2c_client *client, u16 reg, u8 val) |
4cf51c38 | 699 | { |
9638ab7c | 700 | return __mxt_write_reg(client, reg, 1, &val); |
4cf51c38 JS |
701 | } |
702 | ||
7686b108 IV |
703 | static struct mxt_object * |
704 | mxt_get_object(struct mxt_data *data, u8 type) | |
4cf51c38 | 705 | { |
7686b108 | 706 | struct mxt_object *object; |
4cf51c38 JS |
707 | int i; |
708 | ||
068bdb67 | 709 | for (i = 0; i < data->info->object_num; i++) { |
4cf51c38 JS |
710 | object = data->object_table + i; |
711 | if (object->type == type) | |
712 | return object; | |
713 | } | |
714 | ||
50a77c65 | 715 | dev_warn(&data->client->dev, "Invalid object type T%u\n", type); |
4cf51c38 JS |
716 | return NULL; |
717 | } | |
718 | ||
497767d1 ND |
719 | static void mxt_proc_t6_messages(struct mxt_data *data, u8 *msg) |
720 | { | |
721 | struct device *dev = &data->client->dev; | |
722 | u8 status = msg[1]; | |
723 | u32 crc = msg[2] | (msg[3] << 8) | (msg[4] << 16); | |
724 | ||
497767d1 ND |
725 | if (crc != data->config_crc) { |
726 | data->config_crc = crc; | |
727 | dev_dbg(dev, "T6 Config Checksum: 0x%06X\n", crc); | |
728 | } | |
729 | ||
19a7121e ND |
730 | complete(&data->crc_completion); |
731 | ||
497767d1 ND |
732 | /* Detect reset */ |
733 | if (status & MXT_T6_STATUS_RESET) | |
734 | complete(&data->reset_completion); | |
735 | ||
736 | /* Output debug if status has changed */ | |
737 | if (status != data->t6_status) | |
738 | dev_dbg(dev, "T6 Status 0x%02X%s%s%s%s%s%s%s\n", | |
739 | status, | |
740 | status == 0 ? " OK" : "", | |
741 | status & MXT_T6_STATUS_RESET ? " RESET" : "", | |
742 | status & MXT_T6_STATUS_OFL ? " OFL" : "", | |
743 | status & MXT_T6_STATUS_SIGERR ? " SIGERR" : "", | |
744 | status & MXT_T6_STATUS_CAL ? " CAL" : "", | |
745 | status & MXT_T6_STATUS_CFGERR ? " CFGERR" : "", | |
746 | status & MXT_T6_STATUS_COMSERR ? " COMSERR" : ""); | |
747 | ||
748 | /* Save current status */ | |
749 | data->t6_status = status; | |
750 | } | |
751 | ||
7f405483 LT |
752 | static int mxt_write_object(struct mxt_data *data, |
753 | u8 type, u8 offset, u8 val) | |
754 | { | |
755 | struct mxt_object *object; | |
756 | u16 reg; | |
757 | ||
758 | object = mxt_get_object(data, type); | |
759 | if (!object || offset >= mxt_obj_size(object)) | |
760 | return -EINVAL; | |
761 | ||
762 | reg = object->start_address; | |
763 | return mxt_write_reg(data->client, reg + offset, val); | |
764 | } | |
765 | ||
5f3f9bc2 | 766 | static void mxt_input_button(struct mxt_data *data, u8 *message) |
22dfab7f DK |
767 | { |
768 | struct input_dev *input = data->input_dev; | |
22dfab7f DK |
769 | int i; |
770 | ||
96a938aa DT |
771 | for (i = 0; i < data->t19_num_keys; i++) { |
772 | if (data->t19_keymap[i] == KEY_RESERVED) | |
22dfab7f | 773 | continue; |
c37f6d38 DT |
774 | |
775 | /* Active-low switch */ | |
96a938aa | 776 | input_report_key(input, data->t19_keymap[i], |
c37f6d38 | 777 | !(message[1] & BIT(i))); |
22dfab7f DK |
778 | } |
779 | } | |
780 | ||
b735fbe0 | 781 | static void mxt_input_sync(struct mxt_data *data) |
eef820dc | 782 | { |
b735fbe0 | 783 | input_mt_report_pointer_emulation(data->input_dev, |
96a938aa | 784 | data->t19_num_keys); |
b735fbe0 | 785 | input_sync(data->input_dev); |
eef820dc ND |
786 | } |
787 | ||
b9b05a89 | 788 | static void mxt_proc_t9_message(struct mxt_data *data, u8 *message) |
4cf51c38 | 789 | { |
4cf51c38 | 790 | struct device *dev = &data->client->dev; |
fba5bc31 | 791 | struct input_dev *input_dev = data->input_dev; |
5f3f9bc2 ND |
792 | int id; |
793 | u8 status; | |
4cf51c38 JS |
794 | int x; |
795 | int y; | |
796 | int area; | |
fea9e467 | 797 | int amplitude; |
4cf51c38 | 798 | |
5f3f9bc2 ND |
799 | id = message[0] - data->T9_reportid_min; |
800 | status = message[1]; | |
801 | x = (message[2] << 4) | ((message[4] >> 4) & 0xf); | |
802 | y = (message[3] << 4) | ((message[4] & 0xf)); | |
eef820dc ND |
803 | |
804 | /* Handle 10/12 bit switching */ | |
910d8051 | 805 | if (data->max_x < 1024) |
eef820dc | 806 | x >>= 2; |
910d8051 | 807 | if (data->max_y < 1024) |
eef820dc | 808 | y >>= 2; |
910d8051 | 809 | |
5f3f9bc2 ND |
810 | area = message[5]; |
811 | amplitude = message[6]; | |
4cf51c38 | 812 | |
b2e459b8 DK |
813 | dev_dbg(dev, |
814 | "[%u] %c%c%c%c%c%c%c%c x: %5u y: %5u area: %3u amp: %3u\n", | |
815 | id, | |
f3889ed1 ND |
816 | (status & MXT_T9_DETECT) ? 'D' : '.', |
817 | (status & MXT_T9_PRESS) ? 'P' : '.', | |
818 | (status & MXT_T9_RELEASE) ? 'R' : '.', | |
819 | (status & MXT_T9_MOVE) ? 'M' : '.', | |
820 | (status & MXT_T9_VECTOR) ? 'V' : '.', | |
821 | (status & MXT_T9_AMP) ? 'A' : '.', | |
822 | (status & MXT_T9_SUPPRESS) ? 'S' : '.', | |
823 | (status & MXT_T9_UNGRIP) ? 'U' : '.', | |
fea9e467 | 824 | x, y, area, amplitude); |
b2e459b8 | 825 | |
fba5bc31 | 826 | input_mt_slot(input_dev, id); |
fba5bc31 | 827 | |
f3889ed1 | 828 | if (status & MXT_T9_DETECT) { |
eef820dc ND |
829 | /* |
830 | * Multiple bits may be set if the host is slow to read | |
831 | * the status messages, indicating all the events that | |
832 | * have happened. | |
833 | */ | |
834 | if (status & MXT_T9_RELEASE) { | |
835 | input_mt_report_slot_state(input_dev, | |
836 | MT_TOOL_FINGER, 0); | |
b735fbe0 | 837 | mxt_input_sync(data); |
eef820dc ND |
838 | } |
839 | ||
2ca3ba0a ND |
840 | /* if active, pressure must be non-zero */ |
841 | if (!amplitude) | |
842 | amplitude = MXT_PRESSURE_DEFAULT; | |
843 | ||
eef820dc ND |
844 | /* Touch active */ |
845 | input_mt_report_slot_state(input_dev, MT_TOOL_FINGER, 1); | |
fba5bc31 DK |
846 | input_report_abs(input_dev, ABS_MT_POSITION_X, x); |
847 | input_report_abs(input_dev, ABS_MT_POSITION_Y, y); | |
fea9e467 | 848 | input_report_abs(input_dev, ABS_MT_PRESSURE, amplitude); |
fba5bc31 | 849 | input_report_abs(input_dev, ABS_MT_TOUCH_MAJOR, area); |
eef820dc ND |
850 | } else { |
851 | /* Touch no longer active, close out slot */ | |
852 | input_mt_report_slot_state(input_dev, MT_TOOL_FINGER, 0); | |
fba5bc31 | 853 | } |
b9b05a89 ND |
854 | |
855 | data->update_input = true; | |
4cf51c38 | 856 | } |
4cf51c38 | 857 | |
b23157dc ND |
858 | static void mxt_proc_t100_message(struct mxt_data *data, u8 *message) |
859 | { | |
860 | struct device *dev = &data->client->dev; | |
861 | struct input_dev *input_dev = data->input_dev; | |
862 | int id; | |
863 | u8 status; | |
864 | u8 type = 0; | |
865 | u16 x; | |
866 | u16 y; | |
867 | int distance = 0; | |
868 | int tool = 0; | |
869 | u8 major = 0; | |
870 | u8 pressure = 0; | |
871 | u8 orientation = 0; | |
872 | ||
873 | id = message[0] - data->T100_reportid_min - 2; | |
874 | ||
875 | /* ignore SCRSTATUS events */ | |
876 | if (id < 0) | |
877 | return; | |
878 | ||
879 | status = message[1]; | |
880 | x = get_unaligned_le16(&message[2]); | |
881 | y = get_unaligned_le16(&message[4]); | |
882 | ||
883 | if (status & MXT_T100_DETECT) { | |
884 | type = (status & MXT_T100_TYPE_MASK) >> 4; | |
885 | ||
886 | switch (type) { | |
887 | case MXT_T100_TYPE_HOVERING_FINGER: | |
888 | tool = MT_TOOL_FINGER; | |
889 | distance = MXT_DISTANCE_HOVERING; | |
890 | ||
891 | if (data->t100_aux_vect) | |
892 | orientation = message[data->t100_aux_vect]; | |
893 | ||
894 | break; | |
895 | ||
896 | case MXT_T100_TYPE_FINGER: | |
897 | case MXT_T100_TYPE_GLOVE: | |
898 | tool = MT_TOOL_FINGER; | |
899 | distance = MXT_DISTANCE_ACTIVE_TOUCH; | |
900 | ||
901 | if (data->t100_aux_area) | |
902 | major = message[data->t100_aux_area]; | |
903 | ||
904 | if (data->t100_aux_ampl) | |
905 | pressure = message[data->t100_aux_ampl]; | |
906 | ||
907 | if (data->t100_aux_vect) | |
908 | orientation = message[data->t100_aux_vect]; | |
909 | ||
910 | break; | |
911 | ||
912 | case MXT_T100_TYPE_PASSIVE_STYLUS: | |
913 | tool = MT_TOOL_PEN; | |
914 | ||
915 | /* | |
916 | * Passive stylus is reported with size zero so | |
917 | * hardcode. | |
918 | */ | |
919 | major = MXT_TOUCH_MAJOR_DEFAULT; | |
920 | ||
921 | if (data->t100_aux_ampl) | |
922 | pressure = message[data->t100_aux_ampl]; | |
923 | ||
924 | break; | |
925 | ||
926 | case MXT_T100_TYPE_LARGE_TOUCH: | |
927 | /* Ignore suppressed touch */ | |
928 | break; | |
929 | ||
930 | default: | |
931 | dev_dbg(dev, "Unexpected T100 type\n"); | |
932 | return; | |
933 | } | |
934 | } | |
935 | ||
936 | /* | |
937 | * Values reported should be non-zero if tool is touching the | |
938 | * device | |
939 | */ | |
940 | if (!pressure && type != MXT_T100_TYPE_HOVERING_FINGER) | |
941 | pressure = MXT_PRESSURE_DEFAULT; | |
942 | ||
943 | input_mt_slot(input_dev, id); | |
944 | ||
945 | if (status & MXT_T100_DETECT) { | |
946 | dev_dbg(dev, "[%u] type:%u x:%u y:%u a:%02X p:%02X v:%02X\n", | |
947 | id, type, x, y, major, pressure, orientation); | |
948 | ||
949 | input_mt_report_slot_state(input_dev, tool, 1); | |
950 | input_report_abs(input_dev, ABS_MT_POSITION_X, x); | |
951 | input_report_abs(input_dev, ABS_MT_POSITION_Y, y); | |
952 | input_report_abs(input_dev, ABS_MT_TOUCH_MAJOR, major); | |
953 | input_report_abs(input_dev, ABS_MT_PRESSURE, pressure); | |
954 | input_report_abs(input_dev, ABS_MT_DISTANCE, distance); | |
955 | input_report_abs(input_dev, ABS_MT_ORIENTATION, orientation); | |
956 | } else { | |
957 | dev_dbg(dev, "[%u] release\n", id); | |
958 | ||
959 | /* close out slot */ | |
960 | input_mt_report_slot_state(input_dev, 0, 0); | |
961 | } | |
962 | ||
963 | data->update_input = true; | |
964 | } | |
965 | ||
b9b05a89 | 966 | static int mxt_proc_message(struct mxt_data *data, u8 *message) |
04a79181 | 967 | { |
b9b05a89 ND |
968 | u8 report_id = message[0]; |
969 | ||
970 | if (report_id == MXT_RPTID_NOMSG) | |
971 | return 0; | |
972 | ||
973 | if (report_id == data->T6_reportid) { | |
974 | mxt_proc_t6_messages(data, message); | |
975 | } else if (!data->input_dev) { | |
976 | /* | |
977 | * Do not report events if input device | |
978 | * is not yet registered. | |
979 | */ | |
980 | mxt_dump_message(data, message); | |
b23157dc ND |
981 | } else if (report_id >= data->T9_reportid_min && |
982 | report_id <= data->T9_reportid_max) { | |
b9b05a89 | 983 | mxt_proc_t9_message(data, message); |
b23157dc ND |
984 | } else if (report_id >= data->T100_reportid_min && |
985 | report_id <= data->T100_reportid_max) { | |
986 | mxt_proc_t100_message(data, message); | |
b9b05a89 ND |
987 | } else if (report_id == data->T19_reportid) { |
988 | mxt_input_button(data, message); | |
989 | data->update_input = true; | |
990 | } else { | |
991 | mxt_dump_message(data, message); | |
992 | } | |
993 | ||
994 | return 1; | |
4cf51c38 JS |
995 | } |
996 | ||
9d8dc3e5 | 997 | static int mxt_read_and_process_messages(struct mxt_data *data, u8 count) |
4cf51c38 | 998 | { |
4cf51c38 | 999 | struct device *dev = &data->client->dev; |
b9b05a89 | 1000 | int ret; |
9d8dc3e5 ND |
1001 | int i; |
1002 | u8 num_valid = 0; | |
1003 | ||
1004 | /* Safety check for msg_buf */ | |
1005 | if (count > data->max_reportid) | |
1006 | return -EINVAL; | |
4cf51c38 | 1007 | |
9d8dc3e5 | 1008 | /* Process remaining messages if necessary */ |
b9b05a89 | 1009 | ret = __mxt_read_reg(data->client, data->T5_address, |
9d8dc3e5 | 1010 | data->T5_msg_size * count, data->msg_buf); |
b9b05a89 | 1011 | if (ret) { |
9d8dc3e5 | 1012 | dev_err(dev, "Failed to read %u messages (%d)\n", count, ret); |
b9b05a89 ND |
1013 | return ret; |
1014 | } | |
4cf51c38 | 1015 | |
9d8dc3e5 ND |
1016 | for (i = 0; i < count; i++) { |
1017 | ret = mxt_proc_message(data, | |
1018 | data->msg_buf + data->T5_msg_size * i); | |
1019 | ||
1020 | if (ret == 1) | |
1021 | num_valid++; | |
1022 | } | |
1023 | ||
1024 | /* return number of messages read */ | |
1025 | return num_valid; | |
b9b05a89 | 1026 | } |
4cf51c38 | 1027 | |
9d8dc3e5 | 1028 | static irqreturn_t mxt_process_messages_t44(struct mxt_data *data) |
b9b05a89 | 1029 | { |
9d8dc3e5 | 1030 | struct device *dev = &data->client->dev; |
b9b05a89 | 1031 | int ret; |
9d8dc3e5 | 1032 | u8 count, num_left; |
4cf51c38 | 1033 | |
9d8dc3e5 ND |
1034 | /* Read T44 and T5 together */ |
1035 | ret = __mxt_read_reg(data->client, data->T44_address, | |
1036 | data->T5_msg_size + 1, data->msg_buf); | |
1037 | if (ret) { | |
1038 | dev_err(dev, "Failed to read T44 and T5 (%d)\n", ret); | |
1039 | return IRQ_NONE; | |
1040 | } | |
1041 | ||
1042 | count = data->msg_buf[0]; | |
1043 | ||
507584e2 ND |
1044 | /* |
1045 | * This condition may be caused by the CHG line being configured in | |
1046 | * Mode 0. It results in unnecessary I2C operations but it is benign. | |
1047 | */ | |
1048 | if (count == 0) | |
9d8dc3e5 | 1049 | return IRQ_NONE; |
507584e2 ND |
1050 | |
1051 | if (count > data->max_reportid) { | |
1052 | dev_warn(dev, "T44 count %d exceeded max report id\n", count); | |
9d8dc3e5 ND |
1053 | count = data->max_reportid; |
1054 | } | |
1055 | ||
1056 | /* Process first message */ | |
1057 | ret = mxt_proc_message(data, data->msg_buf + 1); | |
1058 | if (ret < 0) { | |
1059 | dev_warn(dev, "Unexpected invalid message\n"); | |
1060 | return IRQ_NONE; | |
1061 | } | |
1062 | ||
1063 | num_left = count - 1; | |
1064 | ||
1065 | /* Process remaining messages if necessary */ | |
1066 | if (num_left) { | |
1067 | ret = mxt_read_and_process_messages(data, num_left); | |
b9b05a89 | 1068 | if (ret < 0) |
9d8dc3e5 ND |
1069 | goto end; |
1070 | else if (ret != num_left) | |
1071 | dev_warn(dev, "Unexpected invalid message\n"); | |
1072 | } | |
1073 | ||
1074 | end: | |
1075 | if (data->update_input) { | |
1076 | mxt_input_sync(data); | |
1077 | data->update_input = false; | |
1078 | } | |
1079 | ||
1080 | return IRQ_HANDLED; | |
1081 | } | |
1082 | ||
1083 | static int mxt_process_messages_until_invalid(struct mxt_data *data) | |
1084 | { | |
1085 | struct device *dev = &data->client->dev; | |
1086 | int count, read; | |
1087 | u8 tries = 2; | |
1088 | ||
1089 | count = data->max_reportid; | |
1090 | ||
1091 | /* Read messages until we force an invalid */ | |
1092 | do { | |
1093 | read = mxt_read_and_process_messages(data, count); | |
1094 | if (read < count) | |
1095 | return 0; | |
1096 | } while (--tries); | |
1097 | ||
1098 | if (data->update_input) { | |
1099 | mxt_input_sync(data); | |
1100 | data->update_input = false; | |
1101 | } | |
1102 | ||
1103 | dev_err(dev, "CHG pin isn't cleared\n"); | |
1104 | return -EBUSY; | |
1105 | } | |
1106 | ||
1107 | static irqreturn_t mxt_process_messages(struct mxt_data *data) | |
1108 | { | |
1109 | int total_handled, num_handled; | |
1110 | u8 count = data->last_message_count; | |
1111 | ||
1112 | if (count < 1 || count > data->max_reportid) | |
1113 | count = 1; | |
1114 | ||
1115 | /* include final invalid message */ | |
1116 | total_handled = mxt_read_and_process_messages(data, count + 1); | |
1117 | if (total_handled < 0) | |
1118 | return IRQ_NONE; | |
1119 | /* if there were invalid messages, then we are done */ | |
1120 | else if (total_handled <= count) | |
1121 | goto update_count; | |
1122 | ||
1123 | /* keep reading two msgs until one is invalid or reportid limit */ | |
1124 | do { | |
1125 | num_handled = mxt_read_and_process_messages(data, 2); | |
1126 | if (num_handled < 0) | |
b9b05a89 | 1127 | return IRQ_NONE; |
9d8dc3e5 ND |
1128 | |
1129 | total_handled += num_handled; | |
1130 | ||
1131 | if (num_handled < 2) | |
1132 | break; | |
1133 | } while (total_handled < data->num_touchids); | |
1134 | ||
1135 | update_count: | |
1136 | data->last_message_count = total_handled; | |
b9b05a89 ND |
1137 | |
1138 | if (data->update_input) { | |
b735fbe0 | 1139 | mxt_input_sync(data); |
b9b05a89 ND |
1140 | data->update_input = false; |
1141 | } | |
64464ae8 | 1142 | |
4cf51c38 JS |
1143 | return IRQ_HANDLED; |
1144 | } | |
1145 | ||
d79e7e47 BL |
1146 | static irqreturn_t mxt_interrupt(int irq, void *dev_id) |
1147 | { | |
1148 | struct mxt_data *data = dev_id; | |
1149 | ||
1150 | if (data->in_bootloader) { | |
1151 | /* bootloader state transition completion */ | |
1152 | complete(&data->bl_completion); | |
1153 | return IRQ_HANDLED; | |
1154 | } | |
1155 | ||
dd24dcf5 ND |
1156 | if (!data->object_table) |
1157 | return IRQ_HANDLED; | |
1158 | ||
9d8dc3e5 ND |
1159 | if (data->T44_address) { |
1160 | return mxt_process_messages_t44(data); | |
1161 | } else { | |
1162 | return mxt_process_messages(data); | |
1163 | } | |
d79e7e47 BL |
1164 | } |
1165 | ||
a4a2ef46 IV |
1166 | static int mxt_t6_command(struct mxt_data *data, u16 cmd_offset, |
1167 | u8 value, bool wait) | |
1168 | { | |
1169 | u16 reg; | |
1170 | u8 command_register; | |
1171 | int timeout_counter = 0; | |
1172 | int ret; | |
1173 | ||
1174 | reg = data->T6_address + cmd_offset; | |
1175 | ||
1176 | ret = mxt_write_reg(data->client, reg, value); | |
1177 | if (ret) | |
1178 | return ret; | |
1179 | ||
1180 | if (!wait) | |
1181 | return 0; | |
1182 | ||
1183 | do { | |
1184 | msleep(20); | |
1185 | ret = __mxt_read_reg(data->client, reg, 1, &command_register); | |
1186 | if (ret) | |
1187 | return ret; | |
1188 | } while (command_register != 0 && timeout_counter++ <= 100); | |
1189 | ||
1190 | if (timeout_counter > 100) { | |
1191 | dev_err(&data->client->dev, "Command failed!\n"); | |
1192 | return -EIO; | |
1193 | } | |
1194 | ||
1195 | return 0; | |
1196 | } | |
1197 | ||
eb43335c ND |
1198 | static int mxt_acquire_irq(struct mxt_data *data) |
1199 | { | |
1200 | int error; | |
1201 | ||
1202 | enable_irq(data->irq); | |
1203 | ||
1204 | error = mxt_process_messages_until_invalid(data); | |
1205 | if (error) | |
1206 | return error; | |
1207 | ||
1208 | return 0; | |
1209 | } | |
1210 | ||
a4a2ef46 IV |
1211 | static int mxt_soft_reset(struct mxt_data *data) |
1212 | { | |
1213 | struct device *dev = &data->client->dev; | |
1214 | int ret = 0; | |
1215 | ||
885f3fb9 ND |
1216 | dev_info(dev, "Resetting device\n"); |
1217 | ||
1218 | disable_irq(data->irq); | |
a4a2ef46 IV |
1219 | |
1220 | reinit_completion(&data->reset_completion); | |
1221 | ||
1222 | ret = mxt_t6_command(data, MXT_COMMAND_RESET, MXT_RESET_VALUE, false); | |
1223 | if (ret) | |
1224 | return ret; | |
1225 | ||
885f3fb9 | 1226 | /* Ignore CHG line for 100ms after reset */ |
ca1cd36c | 1227 | msleep(MXT_RESET_INVALID_CHG); |
885f3fb9 | 1228 | |
eb43335c | 1229 | mxt_acquire_irq(data); |
885f3fb9 | 1230 | |
a4a2ef46 IV |
1231 | ret = mxt_wait_for_completion(data, &data->reset_completion, |
1232 | MXT_RESET_TIMEOUT); | |
1233 | if (ret) | |
1234 | return ret; | |
1235 | ||
1236 | return 0; | |
1237 | } | |
1238 | ||
c3f78043 ND |
1239 | static void mxt_update_crc(struct mxt_data *data, u8 cmd, u8 value) |
1240 | { | |
1241 | /* | |
1242 | * On failure, CRC is set to 0 and config will always be | |
1243 | * downloaded. | |
1244 | */ | |
1245 | data->config_crc = 0; | |
1246 | reinit_completion(&data->crc_completion); | |
1247 | ||
1248 | mxt_t6_command(data, cmd, value, true); | |
1249 | ||
1250 | /* | |
1251 | * Wait for crc message. On failure, CRC is set to 0 and config will | |
1252 | * always be downloaded. | |
1253 | */ | |
1254 | mxt_wait_for_completion(data, &data->crc_completion, MXT_CRC_TIMEOUT); | |
1255 | } | |
1256 | ||
4ce6fa01 ND |
1257 | static void mxt_calc_crc24(u32 *crc, u8 firstbyte, u8 secondbyte) |
1258 | { | |
1259 | static const unsigned int crcpoly = 0x80001B; | |
1260 | u32 result; | |
1261 | u32 data_word; | |
1262 | ||
1263 | data_word = (secondbyte << 8) | firstbyte; | |
1264 | result = ((*crc << 1) ^ data_word); | |
1265 | ||
1266 | if (result & 0x1000000) | |
1267 | result ^= crcpoly; | |
1268 | ||
1269 | *crc = result; | |
1270 | } | |
1271 | ||
1272 | static u32 mxt_calculate_crc(u8 *base, off_t start_off, off_t end_off) | |
1273 | { | |
1274 | u32 crc = 0; | |
1275 | u8 *ptr = base + start_off; | |
1276 | u8 *last_val = base + end_off - 1; | |
1277 | ||
1278 | if (end_off < start_off) | |
1279 | return -EINVAL; | |
1280 | ||
1281 | while (ptr < last_val) { | |
1282 | mxt_calc_crc24(&crc, *ptr, *(ptr + 1)); | |
1283 | ptr += 2; | |
1284 | } | |
1285 | ||
1286 | /* if len is odd, fill the last byte with 0 */ | |
1287 | if (ptr == last_val) | |
1288 | mxt_calc_crc24(&crc, *ptr, 0); | |
1289 | ||
1290 | /* Mask to 24-bit */ | |
1291 | crc &= 0x00FFFFFF; | |
1292 | ||
1293 | return crc; | |
1294 | } | |
1295 | ||
f865df73 | 1296 | static int mxt_prepare_cfg_mem(struct mxt_data *data, struct mxt_cfg *cfg) |
efdbd7ae DT |
1297 | { |
1298 | struct device *dev = &data->client->dev; | |
1299 | struct mxt_object *object; | |
1300 | unsigned int type, instance, size, byte_offset; | |
1301 | int offset; | |
1302 | int ret; | |
1303 | int i; | |
1304 | u16 reg; | |
1305 | u8 val; | |
1306 | ||
f865df73 | 1307 | while (cfg->raw_pos < cfg->raw_size) { |
efdbd7ae | 1308 | /* Read type, instance, length */ |
f865df73 | 1309 | ret = sscanf(cfg->raw + cfg->raw_pos, "%x %x %x%n", |
efdbd7ae DT |
1310 | &type, &instance, &size, &offset); |
1311 | if (ret == 0) { | |
1312 | /* EOF */ | |
1313 | break; | |
1314 | } else if (ret != 3) { | |
1315 | dev_err(dev, "Bad format: failed to parse object\n"); | |
1316 | return -EINVAL; | |
1317 | } | |
f865df73 | 1318 | cfg->raw_pos += offset; |
efdbd7ae DT |
1319 | |
1320 | object = mxt_get_object(data, type); | |
1321 | if (!object) { | |
1322 | /* Skip object */ | |
1323 | for (i = 0; i < size; i++) { | |
f865df73 | 1324 | ret = sscanf(cfg->raw + cfg->raw_pos, "%hhx%n", |
041fa159 DT |
1325 | &val, &offset); |
1326 | if (ret != 1) { | |
1327 | dev_err(dev, "Bad format in T%d at %d\n", | |
1328 | type, i); | |
1329 | return -EINVAL; | |
1330 | } | |
f865df73 | 1331 | cfg->raw_pos += offset; |
efdbd7ae DT |
1332 | } |
1333 | continue; | |
1334 | } | |
1335 | ||
1336 | if (size > mxt_obj_size(object)) { | |
1337 | /* | |
1338 | * Either we are in fallback mode due to wrong | |
1339 | * config or config from a later fw version, | |
1340 | * or the file is corrupt or hand-edited. | |
1341 | */ | |
1342 | dev_warn(dev, "Discarding %zu byte(s) in T%u\n", | |
1343 | size - mxt_obj_size(object), type); | |
1344 | } else if (mxt_obj_size(object) > size) { | |
1345 | /* | |
1346 | * If firmware is upgraded, new bytes may be added to | |
1347 | * end of objects. It is generally forward compatible | |
1348 | * to zero these bytes - previous behaviour will be | |
1349 | * retained. However this does invalidate the CRC and | |
1350 | * will force fallback mode until the configuration is | |
1351 | * updated. We warn here but do nothing else - the | |
1352 | * malloc has zeroed the entire configuration. | |
1353 | */ | |
1354 | dev_warn(dev, "Zeroing %zu byte(s) in T%d\n", | |
1355 | mxt_obj_size(object) - size, type); | |
1356 | } | |
1357 | ||
1358 | if (instance >= mxt_obj_instances(object)) { | |
1359 | dev_err(dev, "Object instances exceeded!\n"); | |
1360 | return -EINVAL; | |
1361 | } | |
1362 | ||
1363 | reg = object->start_address + mxt_obj_size(object) * instance; | |
1364 | ||
1365 | for (i = 0; i < size; i++) { | |
f865df73 | 1366 | ret = sscanf(cfg->raw + cfg->raw_pos, "%hhx%n", |
efdbd7ae DT |
1367 | &val, |
1368 | &offset); | |
1369 | if (ret != 1) { | |
041fa159 DT |
1370 | dev_err(dev, "Bad format in T%d at %d\n", |
1371 | type, i); | |
efdbd7ae DT |
1372 | return -EINVAL; |
1373 | } | |
f865df73 | 1374 | cfg->raw_pos += offset; |
efdbd7ae DT |
1375 | |
1376 | if (i > mxt_obj_size(object)) | |
1377 | continue; | |
1378 | ||
f865df73 | 1379 | byte_offset = reg + i - cfg->start_ofs; |
efdbd7ae | 1380 | |
f865df73 ND |
1381 | if (byte_offset >= 0 && byte_offset < cfg->mem_size) { |
1382 | *(cfg->mem + byte_offset) = val; | |
efdbd7ae DT |
1383 | } else { |
1384 | dev_err(dev, "Bad object: reg:%d, T%d, ofs=%d\n", | |
1385 | reg, object->type, byte_offset); | |
1386 | return -EINVAL; | |
1387 | } | |
1388 | } | |
1389 | } | |
1390 | ||
1391 | return 0; | |
1392 | } | |
1393 | ||
f865df73 | 1394 | static int mxt_upload_cfg_mem(struct mxt_data *data, struct mxt_cfg *cfg) |
efdbd7ae DT |
1395 | { |
1396 | unsigned int byte_offset = 0; | |
1397 | int error; | |
1398 | ||
1399 | /* Write configuration as blocks */ | |
f865df73 ND |
1400 | while (byte_offset < cfg->mem_size) { |
1401 | unsigned int size = cfg->mem_size - byte_offset; | |
efdbd7ae DT |
1402 | |
1403 | if (size > MXT_MAX_BLOCK_WRITE) | |
1404 | size = MXT_MAX_BLOCK_WRITE; | |
1405 | ||
1406 | error = __mxt_write_reg(data->client, | |
f865df73 ND |
1407 | cfg->start_ofs + byte_offset, |
1408 | size, cfg->mem + byte_offset); | |
efdbd7ae DT |
1409 | if (error) { |
1410 | dev_err(&data->client->dev, | |
1411 | "Config write error, ret=%d\n", error); | |
1412 | return error; | |
1413 | } | |
1414 | ||
1415 | byte_offset += size; | |
1416 | } | |
1417 | ||
1418 | return 0; | |
1419 | } | |
1420 | ||
7f3884f7 ND |
1421 | static int mxt_init_t7_power_cfg(struct mxt_data *data); |
1422 | ||
50a77c65 ND |
1423 | /* |
1424 | * mxt_update_cfg - download configuration to chip | |
1425 | * | |
1426 | * Atmel Raw Config File Format | |
1427 | * | |
1428 | * The first four lines of the raw config file contain: | |
1429 | * 1) Version | |
1430 | * 2) Chip ID Information (first 7 bytes of device memory) | |
1431 | * 3) Chip Information Block 24-bit CRC Checksum | |
1432 | * 4) Chip Configuration 24-bit CRC Checksum | |
1433 | * | |
1434 | * The rest of the file consists of one line per object instance: | |
1435 | * <TYPE> <INSTANCE> <SIZE> <CONTENTS> | |
1436 | * | |
1437 | * <TYPE> - 2-byte object type as hex | |
1438 | * <INSTANCE> - 2-byte object instance number as hex | |
1439 | * <SIZE> - 2-byte object size as hex | |
1440 | * <CONTENTS> - array of <SIZE> 1-byte hex values | |
1441 | */ | |
f865df73 | 1442 | static int mxt_update_cfg(struct mxt_data *data, const struct firmware *fw) |
4cf51c38 | 1443 | { |
4cf51c38 | 1444 | struct device *dev = &data->client->dev; |
f865df73 | 1445 | struct mxt_cfg cfg; |
cf94bc09 | 1446 | int ret; |
50a77c65 | 1447 | int offset; |
50a77c65 | 1448 | int i; |
4ce6fa01 | 1449 | u32 info_crc, config_crc, calculated_crc; |
15082bdb | 1450 | u16 crc_start = 0; |
4cf51c38 | 1451 | |
a4891f10 ND |
1452 | /* Make zero terminated copy of the OBP_RAW file */ |
1453 | cfg.raw = kmemdup_nul(fw->data, fw->size, GFP_KERNEL); | |
1454 | if (!cfg.raw) | |
1455 | return -ENOMEM; | |
1456 | ||
f865df73 ND |
1457 | cfg.raw_size = fw->size; |
1458 | ||
50a77c65 ND |
1459 | mxt_update_crc(data, MXT_COMMAND_REPORTALL, 1); |
1460 | ||
f865df73 | 1461 | if (strncmp(cfg.raw, MXT_CFG_MAGIC, strlen(MXT_CFG_MAGIC))) { |
50a77c65 | 1462 | dev_err(dev, "Unrecognised config file\n"); |
a4891f10 ND |
1463 | ret = -EINVAL; |
1464 | goto release_raw; | |
4cf51c38 JS |
1465 | } |
1466 | ||
f865df73 | 1467 | cfg.raw_pos = strlen(MXT_CFG_MAGIC); |
50a77c65 ND |
1468 | |
1469 | /* Load information block and check */ | |
1470 | for (i = 0; i < sizeof(struct mxt_info); i++) { | |
f865df73 ND |
1471 | ret = sscanf(cfg.raw + cfg.raw_pos, "%hhx%n", |
1472 | (unsigned char *)&cfg.info + i, | |
50a77c65 ND |
1473 | &offset); |
1474 | if (ret != 1) { | |
1475 | dev_err(dev, "Bad format\n"); | |
a4891f10 ND |
1476 | ret = -EINVAL; |
1477 | goto release_raw; | |
50a77c65 | 1478 | } |
c3f78043 | 1479 | |
f865df73 | 1480 | cfg.raw_pos += offset; |
c3f78043 ND |
1481 | } |
1482 | ||
f865df73 | 1483 | if (cfg.info.family_id != data->info->family_id) { |
50a77c65 | 1484 | dev_err(dev, "Family ID mismatch!\n"); |
a4891f10 ND |
1485 | ret = -EINVAL; |
1486 | goto release_raw; | |
50a77c65 | 1487 | } |
c3f78043 | 1488 | |
f865df73 | 1489 | if (cfg.info.variant_id != data->info->variant_id) { |
50a77c65 | 1490 | dev_err(dev, "Variant ID mismatch!\n"); |
a4891f10 ND |
1491 | ret = -EINVAL; |
1492 | goto release_raw; | |
50a77c65 | 1493 | } |
4cf51c38 | 1494 | |
4ce6fa01 | 1495 | /* Read CRCs */ |
f865df73 | 1496 | ret = sscanf(cfg.raw + cfg.raw_pos, "%x%n", &info_crc, &offset); |
50a77c65 ND |
1497 | if (ret != 1) { |
1498 | dev_err(dev, "Bad format: failed to parse Info CRC\n"); | |
a4891f10 ND |
1499 | ret = -EINVAL; |
1500 | goto release_raw; | |
50a77c65 | 1501 | } |
f865df73 | 1502 | cfg.raw_pos += offset; |
50a77c65 | 1503 | |
f865df73 | 1504 | ret = sscanf(cfg.raw + cfg.raw_pos, "%x%n", &config_crc, &offset); |
50a77c65 ND |
1505 | if (ret != 1) { |
1506 | dev_err(dev, "Bad format: failed to parse Config CRC\n"); | |
a4891f10 ND |
1507 | ret = -EINVAL; |
1508 | goto release_raw; | |
50a77c65 | 1509 | } |
f865df73 | 1510 | cfg.raw_pos += offset; |
50a77c65 | 1511 | |
4ce6fa01 ND |
1512 | /* |
1513 | * The Info Block CRC is calculated over mxt_info and the object | |
1514 | * table. If it does not match then we are trying to load the | |
1515 | * configuration from a different chip or firmware version, so | |
1516 | * the configuration CRC is invalid anyway. | |
1517 | */ | |
1518 | if (info_crc == data->info_crc) { | |
1519 | if (config_crc == 0 || data->config_crc == 0) { | |
1520 | dev_info(dev, "CRC zero, attempting to apply config\n"); | |
1521 | } else if (config_crc == data->config_crc) { | |
1522 | dev_dbg(dev, "Config CRC 0x%06X: OK\n", | |
1523 | data->config_crc); | |
efdbd7ae | 1524 | return 0; |
4ce6fa01 ND |
1525 | } else { |
1526 | dev_info(dev, "Config CRC 0x%06X: does not match file 0x%06X\n", | |
1527 | data->config_crc, config_crc); | |
1528 | } | |
1529 | } else { | |
1530 | dev_warn(dev, | |
1531 | "Warning: Info CRC error - device=0x%06X file=0x%06X\n", | |
1532 | data->info_crc, info_crc); | |
50a77c65 ND |
1533 | } |
1534 | ||
4ce6fa01 | 1535 | /* Malloc memory to store configuration */ |
f865df73 | 1536 | cfg.start_ofs = MXT_OBJECT_START + |
068bdb67 | 1537 | data->info->object_num * sizeof(struct mxt_object) + |
4ce6fa01 | 1538 | MXT_INFO_CHECKSUM_SIZE; |
f865df73 ND |
1539 | cfg.mem_size = data->mem_size - cfg.start_ofs; |
1540 | cfg.mem = kzalloc(cfg.mem_size, GFP_KERNEL); | |
a4891f10 ND |
1541 | if (!cfg.mem) { |
1542 | ret = -ENOMEM; | |
1543 | goto release_raw; | |
1544 | } | |
50a77c65 | 1545 | |
f865df73 | 1546 | ret = mxt_prepare_cfg_mem(data, &cfg); |
efdbd7ae DT |
1547 | if (ret) |
1548 | goto release_mem; | |
50a77c65 | 1549 | |
4ce6fa01 | 1550 | /* Calculate crc of the received configs (not the raw config file) */ |
15082bdb ND |
1551 | if (data->T71_address) |
1552 | crc_start = data->T71_address; | |
1553 | else if (data->T7_address) | |
1554 | crc_start = data->T7_address; | |
1555 | else | |
1556 | dev_warn(dev, "Could not find CRC start\n"); | |
1557 | ||
f865df73 ND |
1558 | if (crc_start > cfg.start_ofs) { |
1559 | calculated_crc = mxt_calculate_crc(cfg.mem, | |
1560 | crc_start - cfg.start_ofs, | |
1561 | cfg.mem_size); | |
15082bdb ND |
1562 | |
1563 | if (config_crc > 0 && config_crc != calculated_crc) | |
1564 | dev_warn(dev, "Config CRC in file inconsistent, calculated=%06X, file=%06X\n", | |
1565 | calculated_crc, config_crc); | |
4ce6fa01 | 1566 | } |
50a77c65 | 1567 | |
f865df73 | 1568 | ret = mxt_upload_cfg_mem(data, &cfg); |
efdbd7ae DT |
1569 | if (ret) |
1570 | goto release_mem; | |
4cf51c38 | 1571 | |
c3f78043 ND |
1572 | mxt_update_crc(data, MXT_COMMAND_BACKUPNV, MXT_BACKUP_VALUE); |
1573 | ||
1574 | ret = mxt_soft_reset(data); | |
1575 | if (ret) | |
4ce6fa01 | 1576 | goto release_mem; |
c3f78043 ND |
1577 | |
1578 | dev_info(dev, "Config successfully updated\n"); | |
1579 | ||
7f3884f7 ND |
1580 | /* T7 config may have changed */ |
1581 | mxt_init_t7_power_cfg(data); | |
1582 | ||
4ce6fa01 | 1583 | release_mem: |
f865df73 | 1584 | kfree(cfg.mem); |
1e3c336a SC |
1585 | release_raw: |
1586 | kfree(cfg.raw); | |
50a77c65 | 1587 | return ret; |
4cf51c38 JS |
1588 | } |
1589 | ||
58e4aeee | 1590 | static void mxt_free_input_device(struct mxt_data *data) |
5f3f9bc2 | 1591 | { |
58e4aeee SW |
1592 | if (data->input_dev) { |
1593 | input_unregister_device(data->input_dev); | |
1594 | data->input_dev = NULL; | |
1595 | } | |
1596 | } | |
5f3f9bc2 | 1597 | |
58e4aeee SW |
1598 | static void mxt_free_object_table(struct mxt_data *data) |
1599 | { | |
ecfdd7e2 ND |
1600 | #ifdef CONFIG_TOUCHSCREEN_ATMEL_MXT_T37 |
1601 | video_unregister_device(&data->dbg.vdev); | |
1602 | v4l2_device_unregister(&data->dbg.v4l2); | |
1603 | #endif | |
5f3f9bc2 | 1604 | data->object_table = NULL; |
068bdb67 ND |
1605 | data->info = NULL; |
1606 | kfree(data->raw_info_block); | |
1607 | data->raw_info_block = NULL; | |
5f3f9bc2 ND |
1608 | kfree(data->msg_buf); |
1609 | data->msg_buf = NULL; | |
b9b05a89 | 1610 | data->T5_address = 0; |
5f3f9bc2 ND |
1611 | data->T5_msg_size = 0; |
1612 | data->T6_reportid = 0; | |
1613 | data->T7_address = 0; | |
15082bdb | 1614 | data->T71_address = 0; |
5f3f9bc2 ND |
1615 | data->T9_reportid_min = 0; |
1616 | data->T9_reportid_max = 0; | |
1617 | data->T19_reportid = 0; | |
9d8dc3e5 | 1618 | data->T44_address = 0; |
b23157dc ND |
1619 | data->T100_reportid_min = 0; |
1620 | data->T100_reportid_max = 0; | |
9d8dc3e5 | 1621 | data->max_reportid = 0; |
5f3f9bc2 ND |
1622 | } |
1623 | ||
068bdb67 ND |
1624 | static int mxt_parse_object_table(struct mxt_data *data, |
1625 | struct mxt_object *object_table) | |
4cf51c38 | 1626 | { |
333e5a9a | 1627 | struct i2c_client *client = data->client; |
4cf51c38 | 1628 | int i; |
333e5a9a | 1629 | u8 reportid; |
4ce6fa01 | 1630 | u16 end_address; |
333e5a9a | 1631 | |
333e5a9a DK |
1632 | /* Valid Report IDs start counting from 1 */ |
1633 | reportid = 1; | |
4ce6fa01 | 1634 | data->mem_size = 0; |
068bdb67 | 1635 | for (i = 0; i < data->info->object_num; i++) { |
dd24dcf5 | 1636 | struct mxt_object *object = object_table + i; |
333e5a9a | 1637 | u8 min_id, max_id; |
4cf51c38 | 1638 | |
333e5a9a | 1639 | le16_to_cpus(&object->start_address); |
4cf51c38 JS |
1640 | |
1641 | if (object->num_report_ids) { | |
333e5a9a | 1642 | min_id = reportid; |
4cf51c38 | 1643 | reportid += object->num_report_ids * |
1e0c0c5b | 1644 | mxt_obj_instances(object); |
333e5a9a DK |
1645 | max_id = reportid - 1; |
1646 | } else { | |
1647 | min_id = 0; | |
1648 | max_id = 0; | |
1649 | } | |
1650 | ||
1651 | dev_dbg(&data->client->dev, | |
7bed6805 | 1652 | "T%u Start:%u Size:%zu Instances:%zu Report IDs:%u-%u\n", |
1e0c0c5b DK |
1653 | object->type, object->start_address, |
1654 | mxt_obj_size(object), mxt_obj_instances(object), | |
1655 | min_id, max_id); | |
333e5a9a DK |
1656 | |
1657 | switch (object->type) { | |
5f3f9bc2 | 1658 | case MXT_GEN_MESSAGE_T5: |
068bdb67 ND |
1659 | if (data->info->family_id == 0x80 && |
1660 | data->info->version < 0x20) { | |
9d8dc3e5 | 1661 | /* |
437d4f37 ND |
1662 | * On mXT224 firmware versions prior to V2.0 |
1663 | * read and discard unused CRC byte otherwise | |
1664 | * DMA reads are misaligned. | |
9d8dc3e5 ND |
1665 | */ |
1666 | data->T5_msg_size = mxt_obj_size(object); | |
1667 | } else { | |
1668 | /* CRC not enabled, so skip last byte */ | |
1669 | data->T5_msg_size = mxt_obj_size(object) - 1; | |
1670 | } | |
b9b05a89 | 1671 | data->T5_address = object->start_address; |
041fa159 | 1672 | break; |
fdf80421 DK |
1673 | case MXT_GEN_COMMAND_T6: |
1674 | data->T6_reportid = min_id; | |
a4a2ef46 | 1675 | data->T6_address = object->start_address; |
fdf80421 | 1676 | break; |
4ce6fa01 ND |
1677 | case MXT_GEN_POWER_T7: |
1678 | data->T7_address = object->start_address; | |
1679 | break; | |
15082bdb ND |
1680 | case MXT_SPT_DYNAMICCONFIGURATIONCONTAINER_T71: |
1681 | data->T71_address = object->start_address; | |
1682 | break; | |
333e5a9a | 1683 | case MXT_TOUCH_MULTI_T9: |
b23157dc | 1684 | data->multitouch = MXT_TOUCH_MULTI_T9; |
36f5d9ef | 1685 | /* Only handle messages from first T9 instance */ |
333e5a9a | 1686 | data->T9_reportid_min = min_id; |
36f5d9ef ND |
1687 | data->T9_reportid_max = min_id + |
1688 | object->num_report_ids - 1; | |
1689 | data->num_touchids = object->num_report_ids; | |
9d8dc3e5 ND |
1690 | break; |
1691 | case MXT_SPT_MESSAGECOUNT_T44: | |
1692 | data->T44_address = object->start_address; | |
333e5a9a | 1693 | break; |
22dfab7f DK |
1694 | case MXT_SPT_GPIOPWM_T19: |
1695 | data->T19_reportid = min_id; | |
1696 | break; | |
b23157dc ND |
1697 | case MXT_TOUCH_MULTITOUCHSCREEN_T100: |
1698 | data->multitouch = MXT_TOUCH_MULTITOUCHSCREEN_T100; | |
1699 | data->T100_reportid_min = min_id; | |
1700 | data->T100_reportid_max = max_id; | |
1701 | /* first two report IDs reserved */ | |
1702 | data->num_touchids = object->num_report_ids - 2; | |
1703 | break; | |
4cf51c38 | 1704 | } |
4ce6fa01 ND |
1705 | |
1706 | end_address = object->start_address | |
1707 | + mxt_obj_size(object) * mxt_obj_instances(object) - 1; | |
1708 | ||
1709 | if (end_address >= data->mem_size) | |
1710 | data->mem_size = end_address + 1; | |
4cf51c38 JS |
1711 | } |
1712 | ||
9d8dc3e5 ND |
1713 | /* Store maximum reportid */ |
1714 | data->max_reportid = reportid; | |
1715 | ||
1716 | /* If T44 exists, T5 position has to be directly after */ | |
1717 | if (data->T44_address && (data->T5_address != data->T44_address + 1)) { | |
1718 | dev_err(&client->dev, "Invalid T44 position\n"); | |
068bdb67 | 1719 | return -EINVAL; |
9d8dc3e5 ND |
1720 | } |
1721 | ||
1722 | data->msg_buf = kcalloc(data->max_reportid, | |
1723 | data->T5_msg_size, GFP_KERNEL); | |
068bdb67 ND |
1724 | if (!data->msg_buf) |
1725 | return -ENOMEM; | |
1726 | ||
1727 | return 0; | |
1728 | } | |
1729 | ||
1730 | static int mxt_read_info_block(struct mxt_data *data) | |
1731 | { | |
1732 | struct i2c_client *client = data->client; | |
1733 | int error; | |
1734 | size_t size; | |
1735 | void *id_buf, *buf; | |
1736 | uint8_t num_objects; | |
1737 | u32 calculated_crc; | |
1738 | u8 *crc_ptr; | |
1739 | ||
1740 | /* If info block already allocated, free it */ | |
1741 | if (data->raw_info_block) | |
1742 | mxt_free_object_table(data); | |
1743 | ||
1744 | /* Read 7-byte ID information block starting at address 0 */ | |
1745 | size = sizeof(struct mxt_info); | |
1746 | id_buf = kzalloc(size, GFP_KERNEL); | |
1747 | if (!id_buf) | |
1748 | return -ENOMEM; | |
1749 | ||
1750 | error = __mxt_read_reg(client, 0, size, id_buf); | |
1751 | if (error) | |
1752 | goto err_free_mem; | |
1753 | ||
1754 | /* Resize buffer to give space for rest of info block */ | |
1755 | num_objects = ((struct mxt_info *)id_buf)->object_num; | |
1756 | size += (num_objects * sizeof(struct mxt_object)) | |
1757 | + MXT_INFO_CHECKSUM_SIZE; | |
1758 | ||
1759 | buf = krealloc(id_buf, size, GFP_KERNEL); | |
1760 | if (!buf) { | |
5f3f9bc2 | 1761 | error = -ENOMEM; |
068bdb67 ND |
1762 | goto err_free_mem; |
1763 | } | |
1764 | id_buf = buf; | |
1765 | ||
1766 | /* Read rest of info block */ | |
1767 | error = __mxt_read_reg(client, MXT_OBJECT_START, | |
1768 | size - MXT_OBJECT_START, | |
1769 | id_buf + MXT_OBJECT_START); | |
1770 | if (error) | |
1771 | goto err_free_mem; | |
1772 | ||
1773 | /* Extract & calculate checksum */ | |
1774 | crc_ptr = id_buf + size - MXT_INFO_CHECKSUM_SIZE; | |
1775 | data->info_crc = crc_ptr[0] | (crc_ptr[1] << 8) | (crc_ptr[2] << 16); | |
1776 | ||
1777 | calculated_crc = mxt_calculate_crc(id_buf, 0, | |
1778 | size - MXT_INFO_CHECKSUM_SIZE); | |
1779 | ||
1780 | /* | |
1781 | * CRC mismatch can be caused by data corruption due to I2C comms | |
1782 | * issue or else device is not using Object Based Protocol (eg i2c-hid) | |
1783 | */ | |
1784 | if ((data->info_crc == 0) || (data->info_crc != calculated_crc)) { | |
1785 | dev_err(&client->dev, | |
1786 | "Info Block CRC error calculated=0x%06X read=0x%06X\n", | |
1787 | calculated_crc, data->info_crc); | |
1788 | error = -EIO; | |
1789 | goto err_free_mem; | |
1790 | } | |
1791 | ||
1792 | data->raw_info_block = id_buf; | |
1793 | data->info = (struct mxt_info *)id_buf; | |
1794 | ||
1795 | dev_info(&client->dev, | |
1796 | "Family: %u Variant: %u Firmware V%u.%u.%02X Objects: %u\n", | |
1797 | data->info->family_id, data->info->variant_id, | |
1798 | data->info->version >> 4, data->info->version & 0xf, | |
1799 | data->info->build, data->info->object_num); | |
1800 | ||
1801 | /* Parse object table information */ | |
1802 | error = mxt_parse_object_table(data, id_buf + MXT_OBJECT_START); | |
1803 | if (error) { | |
1804 | dev_err(&client->dev, "Error %d parsing object table\n", error); | |
1805 | mxt_free_object_table(data); | |
1806 | goto err_free_mem; | |
5f3f9bc2 ND |
1807 | } |
1808 | ||
068bdb67 | 1809 | data->object_table = (struct mxt_object *)(id_buf + MXT_OBJECT_START); |
dd24dcf5 | 1810 | |
4cf51c38 | 1811 | return 0; |
4cf51c38 | 1812 | |
068bdb67 ND |
1813 | err_free_mem: |
1814 | kfree(id_buf); | |
5f3f9bc2 | 1815 | return error; |
7d4fa100 DK |
1816 | } |
1817 | ||
61dc1aba ND |
1818 | static int mxt_read_t9_resolution(struct mxt_data *data) |
1819 | { | |
1820 | struct i2c_client *client = data->client; | |
1821 | int error; | |
1822 | struct t9_range range; | |
1823 | unsigned char orient; | |
1824 | struct mxt_object *object; | |
1825 | ||
1826 | object = mxt_get_object(data, MXT_TOUCH_MULTI_T9); | |
1827 | if (!object) | |
1828 | return -EINVAL; | |
1829 | ||
2786489f ND |
1830 | error = __mxt_read_reg(client, |
1831 | object->start_address + MXT_T9_XSIZE, | |
1832 | sizeof(data->xsize), &data->xsize); | |
1833 | if (error) | |
1834 | return error; | |
1835 | ||
1836 | error = __mxt_read_reg(client, | |
1837 | object->start_address + MXT_T9_YSIZE, | |
1838 | sizeof(data->ysize), &data->ysize); | |
1839 | if (error) | |
1840 | return error; | |
1841 | ||
61dc1aba ND |
1842 | error = __mxt_read_reg(client, |
1843 | object->start_address + MXT_T9_RANGE, | |
1844 | sizeof(range), &range); | |
1845 | if (error) | |
1846 | return error; | |
1847 | ||
1c0276d5 ND |
1848 | data->max_x = get_unaligned_le16(&range.x); |
1849 | data->max_y = get_unaligned_le16(&range.y); | |
61dc1aba ND |
1850 | |
1851 | error = __mxt_read_reg(client, | |
1852 | object->start_address + MXT_T9_ORIENT, | |
1853 | 1, &orient); | |
1854 | if (error) | |
1855 | return error; | |
1856 | ||
1c0276d5 | 1857 | data->xy_switch = orient & MXT_T9_ORIENT_SWITCH; |
de601f71 ND |
1858 | data->invertx = orient & MXT_T9_ORIENT_INVERTX; |
1859 | data->inverty = orient & MXT_T9_ORIENT_INVERTY; | |
61dc1aba ND |
1860 | |
1861 | return 0; | |
1862 | } | |
1863 | ||
b23157dc ND |
1864 | static int mxt_read_t100_config(struct mxt_data *data) |
1865 | { | |
1866 | struct i2c_client *client = data->client; | |
1867 | int error; | |
1868 | struct mxt_object *object; | |
1869 | u16 range_x, range_y; | |
1870 | u8 cfg, tchaux; | |
1871 | u8 aux; | |
1872 | ||
1873 | object = mxt_get_object(data, MXT_TOUCH_MULTITOUCHSCREEN_T100); | |
1874 | if (!object) | |
1875 | return -EINVAL; | |
1876 | ||
1c0276d5 | 1877 | /* read touchscreen dimensions */ |
b23157dc ND |
1878 | error = __mxt_read_reg(client, |
1879 | object->start_address + MXT_T100_XRANGE, | |
1880 | sizeof(range_x), &range_x); | |
1881 | if (error) | |
1882 | return error; | |
1883 | ||
1c0276d5 | 1884 | data->max_x = get_unaligned_le16(&range_x); |
b23157dc ND |
1885 | |
1886 | error = __mxt_read_reg(client, | |
1887 | object->start_address + MXT_T100_YRANGE, | |
1888 | sizeof(range_y), &range_y); | |
1889 | if (error) | |
1890 | return error; | |
1891 | ||
1c0276d5 | 1892 | data->max_y = get_unaligned_le16(&range_y); |
b23157dc | 1893 | |
2786489f ND |
1894 | error = __mxt_read_reg(client, |
1895 | object->start_address + MXT_T100_XSIZE, | |
1896 | sizeof(data->xsize), &data->xsize); | |
1897 | if (error) | |
1898 | return error; | |
1899 | ||
1900 | error = __mxt_read_reg(client, | |
1901 | object->start_address + MXT_T100_YSIZE, | |
1902 | sizeof(data->ysize), &data->ysize); | |
1903 | if (error) | |
1904 | return error; | |
1905 | ||
1c0276d5 | 1906 | /* read orientation config */ |
b23157dc ND |
1907 | error = __mxt_read_reg(client, |
1908 | object->start_address + MXT_T100_CFG1, | |
1909 | 1, &cfg); | |
1910 | if (error) | |
1911 | return error; | |
1912 | ||
1c0276d5 | 1913 | data->xy_switch = cfg & MXT_T100_CFG_SWITCHXY; |
de601f71 ND |
1914 | data->invertx = cfg & MXT_T100_CFG_INVERTX; |
1915 | data->inverty = cfg & MXT_T100_CFG_INVERTY; | |
1c0276d5 ND |
1916 | |
1917 | /* allocate aux bytes */ | |
b23157dc ND |
1918 | error = __mxt_read_reg(client, |
1919 | object->start_address + MXT_T100_TCHAUX, | |
1920 | 1, &tchaux); | |
1921 | if (error) | |
1922 | return error; | |
1923 | ||
b23157dc ND |
1924 | aux = 6; |
1925 | ||
1926 | if (tchaux & MXT_T100_TCHAUX_VECT) | |
1927 | data->t100_aux_vect = aux++; | |
1928 | ||
1929 | if (tchaux & MXT_T100_TCHAUX_AMPL) | |
1930 | data->t100_aux_ampl = aux++; | |
1931 | ||
1932 | if (tchaux & MXT_T100_TCHAUX_AREA) | |
1933 | data->t100_aux_area = aux++; | |
1934 | ||
1935 | dev_dbg(&client->dev, | |
1936 | "T100 aux mappings vect:%u ampl:%u area:%u\n", | |
1937 | data->t100_aux_vect, data->t100_aux_ampl, data->t100_aux_area); | |
1938 | ||
b23157dc ND |
1939 | return 0; |
1940 | } | |
1941 | ||
7a53d609 ND |
1942 | static int mxt_input_open(struct input_dev *dev); |
1943 | static void mxt_input_close(struct input_dev *dev); | |
1944 | ||
b6d2d328 SS |
1945 | static void mxt_set_up_as_touchpad(struct input_dev *input_dev, |
1946 | struct mxt_data *data) | |
1947 | { | |
b6d2d328 SS |
1948 | int i; |
1949 | ||
1950 | input_dev->name = "Atmel maXTouch Touchpad"; | |
1951 | ||
1952 | __set_bit(INPUT_PROP_BUTTONPAD, input_dev->propbit); | |
1953 | ||
1954 | input_abs_set_res(input_dev, ABS_X, MXT_PIXELS_PER_MM); | |
1955 | input_abs_set_res(input_dev, ABS_Y, MXT_PIXELS_PER_MM); | |
1956 | input_abs_set_res(input_dev, ABS_MT_POSITION_X, | |
1957 | MXT_PIXELS_PER_MM); | |
1958 | input_abs_set_res(input_dev, ABS_MT_POSITION_Y, | |
1959 | MXT_PIXELS_PER_MM); | |
1960 | ||
96a938aa DT |
1961 | for (i = 0; i < data->t19_num_keys; i++) |
1962 | if (data->t19_keymap[i] != KEY_RESERVED) | |
b6d2d328 | 1963 | input_set_capability(input_dev, EV_KEY, |
96a938aa | 1964 | data->t19_keymap[i]); |
b6d2d328 SS |
1965 | } |
1966 | ||
b23157dc | 1967 | static int mxt_initialize_input_device(struct mxt_data *data) |
7a53d609 | 1968 | { |
b6d2d328 | 1969 | struct device *dev = &data->client->dev; |
7a53d609 ND |
1970 | struct input_dev *input_dev; |
1971 | int error; | |
1972 | unsigned int num_mt_slots; | |
1973 | unsigned int mt_flags = 0; | |
7a53d609 | 1974 | |
b23157dc ND |
1975 | switch (data->multitouch) { |
1976 | case MXT_TOUCH_MULTI_T9: | |
1977 | num_mt_slots = data->T9_reportid_max - data->T9_reportid_min + 1; | |
1978 | error = mxt_read_t9_resolution(data); | |
1979 | if (error) | |
1980 | dev_warn(dev, "Failed to initialize T9 resolution\n"); | |
1981 | break; | |
1982 | ||
1983 | case MXT_TOUCH_MULTITOUCHSCREEN_T100: | |
1984 | num_mt_slots = data->num_touchids; | |
1985 | error = mxt_read_t100_config(data); | |
1986 | if (error) | |
1987 | dev_warn(dev, "Failed to read T100 config\n"); | |
1988 | break; | |
1989 | ||
1990 | default: | |
1991 | dev_err(dev, "Invalid multitouch object\n"); | |
1992 | return -EINVAL; | |
1993 | } | |
7a53d609 | 1994 | |
1c0276d5 ND |
1995 | /* Handle default values and orientation switch */ |
1996 | if (data->max_x == 0) | |
1997 | data->max_x = 1023; | |
1998 | ||
1999 | if (data->max_y == 0) | |
2000 | data->max_y = 1023; | |
2001 | ||
2002 | if (data->xy_switch) | |
2003 | swap(data->max_x, data->max_y); | |
2004 | ||
2005 | dev_info(dev, "Touchscreen size X%uY%u\n", data->max_x, data->max_y); | |
2006 | ||
2007 | /* Register input device */ | |
7a53d609 | 2008 | input_dev = input_allocate_device(); |
01cc75f9 | 2009 | if (!input_dev) |
7a53d609 | 2010 | return -ENOMEM; |
7a53d609 ND |
2011 | |
2012 | input_dev->name = "Atmel maXTouch Touchscreen"; | |
2013 | input_dev->phys = data->phys; | |
2014 | input_dev->id.bustype = BUS_I2C; | |
2015 | input_dev->dev.parent = dev; | |
2016 | input_dev->open = mxt_input_open; | |
2017 | input_dev->close = mxt_input_close; | |
2018 | ||
b23157dc | 2019 | input_set_capability(input_dev, EV_KEY, BTN_TOUCH); |
7a53d609 | 2020 | |
7a53d609 | 2021 | /* For single touch */ |
b23157dc ND |
2022 | input_set_abs_params(input_dev, ABS_X, 0, data->max_x, 0, 0); |
2023 | input_set_abs_params(input_dev, ABS_Y, 0, data->max_y, 0, 0); | |
2024 | ||
2025 | if (data->multitouch == MXT_TOUCH_MULTI_T9 || | |
2026 | (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 && | |
2027 | data->t100_aux_ampl)) { | |
2028 | input_set_abs_params(input_dev, ABS_PRESSURE, 0, 255, 0, 0); | |
2029 | } | |
7a53d609 | 2030 | |
b6d2d328 | 2031 | /* If device has buttons we assume it is a touchpad */ |
96a938aa | 2032 | if (data->t19_num_keys) { |
b6d2d328 SS |
2033 | mxt_set_up_as_touchpad(input_dev, data); |
2034 | mt_flags |= INPUT_MT_POINTER; | |
eafc0c87 ND |
2035 | } else { |
2036 | mt_flags |= INPUT_MT_DIRECT; | |
b6d2d328 SS |
2037 | } |
2038 | ||
7a53d609 | 2039 | /* For multi touch */ |
7a53d609 ND |
2040 | error = input_mt_init_slots(input_dev, num_mt_slots, mt_flags); |
2041 | if (error) { | |
2042 | dev_err(dev, "Error %d initialising slots\n", error); | |
2043 | goto err_free_mem; | |
2044 | } | |
2045 | ||
b23157dc ND |
2046 | if (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100) { |
2047 | input_set_abs_params(input_dev, ABS_MT_TOOL_TYPE, | |
2048 | 0, MT_TOOL_MAX, 0, 0); | |
2049 | input_set_abs_params(input_dev, ABS_MT_DISTANCE, | |
2050 | MXT_DISTANCE_ACTIVE_TOUCH, | |
2051 | MXT_DISTANCE_HOVERING, | |
2052 | 0, 0); | |
2053 | } | |
2054 | ||
7a53d609 ND |
2055 | input_set_abs_params(input_dev, ABS_MT_POSITION_X, |
2056 | 0, data->max_x, 0, 0); | |
2057 | input_set_abs_params(input_dev, ABS_MT_POSITION_Y, | |
2058 | 0, data->max_y, 0, 0); | |
b23157dc ND |
2059 | |
2060 | if (data->multitouch == MXT_TOUCH_MULTI_T9 || | |
2061 | (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 && | |
2062 | data->t100_aux_area)) { | |
2063 | input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR, | |
2064 | 0, MXT_MAX_AREA, 0, 0); | |
2065 | } | |
2066 | ||
2067 | if (data->multitouch == MXT_TOUCH_MULTI_T9 || | |
2068 | (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 && | |
2069 | data->t100_aux_ampl)) { | |
2070 | input_set_abs_params(input_dev, ABS_MT_PRESSURE, | |
2071 | 0, 255, 0, 0); | |
2072 | } | |
2073 | ||
2074 | if (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 && | |
2075 | data->t100_aux_vect) { | |
2076 | input_set_abs_params(input_dev, ABS_MT_ORIENTATION, | |
2077 | 0, 255, 0, 0); | |
2078 | } | |
2079 | ||
b23157dc ND |
2080 | if (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 && |
2081 | data->t100_aux_vect) { | |
2082 | input_set_abs_params(input_dev, ABS_MT_ORIENTATION, | |
2083 | 0, 255, 0, 0); | |
2084 | } | |
7a53d609 ND |
2085 | |
2086 | input_set_drvdata(input_dev, data); | |
2087 | ||
2088 | error = input_register_device(input_dev); | |
2089 | if (error) { | |
2090 | dev_err(dev, "Error %d registering input device\n", error); | |
2091 | goto err_free_mem; | |
2092 | } | |
2093 | ||
2094 | data->input_dev = input_dev; | |
2095 | ||
2096 | return 0; | |
2097 | ||
2098 | err_free_mem: | |
2099 | input_free_device(input_dev); | |
2100 | return error; | |
2101 | } | |
2102 | ||
50a77c65 ND |
2103 | static int mxt_configure_objects(struct mxt_data *data, |
2104 | const struct firmware *cfg); | |
2105 | ||
2106 | static void mxt_config_cb(const struct firmware *cfg, void *ctx) | |
2107 | { | |
2108 | mxt_configure_objects(ctx, cfg); | |
efdbd7ae | 2109 | release_firmware(cfg); |
50a77c65 ND |
2110 | } |
2111 | ||
7686b108 | 2112 | static int mxt_initialize(struct mxt_data *data) |
4cf51c38 JS |
2113 | { |
2114 | struct i2c_client *client = data->client; | |
6cd1ab0f | 2115 | int recovery_attempts = 0; |
4cf51c38 | 2116 | int error; |
4cf51c38 | 2117 | |
6cd1ab0f | 2118 | while (1) { |
068bdb67 | 2119 | error = mxt_read_info_block(data); |
6cd1ab0f DT |
2120 | if (!error) |
2121 | break; | |
2122 | ||
2123 | /* Check bootloader state */ | |
2124 | error = mxt_probe_bootloader(data, false); | |
8efaa5e5 | 2125 | if (error) { |
6cd1ab0f DT |
2126 | dev_info(&client->dev, "Trying alternate bootloader address\n"); |
2127 | error = mxt_probe_bootloader(data, true); | |
2128 | if (error) { | |
8efaa5e5 ND |
2129 | /* Chip is not in appmode or bootloader mode */ |
2130 | return error; | |
2131 | } | |
6cd1ab0f | 2132 | } |
a9fdd1e6 | 2133 | |
6cd1ab0f DT |
2134 | /* OK, we are in bootloader, see if we can recover */ |
2135 | if (++recovery_attempts > 1) { | |
2136 | dev_err(&client->dev, "Could not recover from bootloader mode\n"); | |
2137 | /* | |
2138 | * We can reflash from this state, so do not | |
2139 | * abort initialization. | |
2140 | */ | |
2141 | data->in_bootloader = true; | |
2142 | return 0; | |
8efaa5e5 | 2143 | } |
6cd1ab0f DT |
2144 | |
2145 | /* Attempt to exit bootloader into app mode */ | |
2146 | mxt_send_bootloader_cmd(data, false); | |
2147 | msleep(MXT_FW_RESET_TIME); | |
a9fdd1e6 | 2148 | } |
4cf51c38 | 2149 | |
041fa159 | 2150 | error = mxt_acquire_irq(data); |
dd24dcf5 | 2151 | if (error) |
068bdb67 | 2152 | return error; |
dd24dcf5 | 2153 | |
6cd1ab0f DT |
2154 | error = request_firmware_nowait(THIS_MODULE, true, MXT_CFG_NAME, |
2155 | &client->dev, GFP_KERNEL, data, | |
2156 | mxt_config_cb); | |
2157 | if (error) { | |
2158 | dev_err(&client->dev, "Failed to invoke firmware loader: %d\n", | |
2159 | error); | |
068bdb67 | 2160 | return error; |
6cd1ab0f | 2161 | } |
50a77c65 ND |
2162 | |
2163 | return 0; | |
50a77c65 ND |
2164 | } |
2165 | ||
7f3884f7 ND |
2166 | static int mxt_set_t7_power_cfg(struct mxt_data *data, u8 sleep) |
2167 | { | |
2168 | struct device *dev = &data->client->dev; | |
2169 | int error; | |
2170 | struct t7_config *new_config; | |
2171 | struct t7_config deepsleep = { .active = 0, .idle = 0 }; | |
2172 | ||
2173 | if (sleep == MXT_POWER_CFG_DEEPSLEEP) | |
2174 | new_config = &deepsleep; | |
2175 | else | |
2176 | new_config = &data->t7_cfg; | |
2177 | ||
2178 | error = __mxt_write_reg(data->client, data->T7_address, | |
2179 | sizeof(data->t7_cfg), new_config); | |
2180 | if (error) | |
2181 | return error; | |
2182 | ||
2183 | dev_dbg(dev, "Set T7 ACTV:%d IDLE:%d\n", | |
2184 | new_config->active, new_config->idle); | |
2185 | ||
2186 | return 0; | |
2187 | } | |
2188 | ||
2189 | static int mxt_init_t7_power_cfg(struct mxt_data *data) | |
2190 | { | |
2191 | struct device *dev = &data->client->dev; | |
2192 | int error; | |
2193 | bool retry = false; | |
2194 | ||
2195 | recheck: | |
2196 | error = __mxt_read_reg(data->client, data->T7_address, | |
2197 | sizeof(data->t7_cfg), &data->t7_cfg); | |
2198 | if (error) | |
2199 | return error; | |
2200 | ||
2201 | if (data->t7_cfg.active == 0 || data->t7_cfg.idle == 0) { | |
2202 | if (!retry) { | |
2203 | dev_dbg(dev, "T7 cfg zero, resetting\n"); | |
2204 | mxt_soft_reset(data); | |
2205 | retry = true; | |
2206 | goto recheck; | |
2207 | } else { | |
2208 | dev_dbg(dev, "T7 cfg zero after reset, overriding\n"); | |
2209 | data->t7_cfg.active = 20; | |
2210 | data->t7_cfg.idle = 100; | |
2211 | return mxt_set_t7_power_cfg(data, MXT_POWER_CFG_RUN); | |
2212 | } | |
2213 | } | |
2214 | ||
2215 | dev_dbg(dev, "Initialized power cfg: ACTV %d, IDLE %d\n", | |
2216 | data->t7_cfg.active, data->t7_cfg.idle); | |
2217 | return 0; | |
2218 | } | |
2219 | ||
d6a39404 ND |
2220 | #ifdef CONFIG_TOUCHSCREEN_ATMEL_MXT_T37 |
2221 | static u16 mxt_get_debug_value(struct mxt_data *data, unsigned int x, | |
2222 | unsigned int y) | |
2223 | { | |
068bdb67 | 2224 | struct mxt_info *info = data->info; |
d6a39404 ND |
2225 | struct mxt_dbg *dbg = &data->dbg; |
2226 | unsigned int ofs, page; | |
566d533a ND |
2227 | unsigned int col = 0; |
2228 | unsigned int col_width; | |
2229 | ||
2230 | if (info->family_id == MXT_FAMILY_1386) { | |
2231 | col_width = info->matrix_ysize / MXT1386_COLUMNS; | |
2232 | col = y / col_width; | |
2233 | y = y % col_width; | |
2234 | } else { | |
2235 | col_width = info->matrix_ysize; | |
2236 | } | |
d6a39404 | 2237 | |
566d533a | 2238 | ofs = (y + (x * col_width)) * sizeof(u16); |
d6a39404 ND |
2239 | page = ofs / MXT_DIAGNOSTIC_SIZE; |
2240 | ofs %= MXT_DIAGNOSTIC_SIZE; | |
2241 | ||
566d533a ND |
2242 | if (info->family_id == MXT_FAMILY_1386) |
2243 | page += col * MXT1386_PAGES_PER_COLUMN; | |
2244 | ||
d6a39404 ND |
2245 | return get_unaligned_le16(&dbg->t37_buf[page].data[ofs]); |
2246 | } | |
2247 | ||
2248 | static int mxt_convert_debug_pages(struct mxt_data *data, u16 *outbuf) | |
2249 | { | |
2250 | struct mxt_dbg *dbg = &data->dbg; | |
2251 | unsigned int x = 0; | |
2252 | unsigned int y = 0; | |
de601f71 | 2253 | unsigned int i, rx, ry; |
d6a39404 ND |
2254 | |
2255 | for (i = 0; i < dbg->t37_nodes; i++) { | |
de601f71 ND |
2256 | /* Handle orientation */ |
2257 | rx = data->xy_switch ? y : x; | |
2258 | ry = data->xy_switch ? x : y; | |
2259 | rx = data->invertx ? (data->xsize - 1 - rx) : rx; | |
2260 | ry = data->inverty ? (data->ysize - 1 - ry) : ry; | |
2261 | ||
2262 | outbuf[i] = mxt_get_debug_value(data, rx, ry); | |
d6a39404 ND |
2263 | |
2264 | /* Next value */ | |
de601f71 | 2265 | if (++x >= (data->xy_switch ? data->ysize : data->xsize)) { |
d6a39404 ND |
2266 | x = 0; |
2267 | y++; | |
2268 | } | |
2269 | } | |
2270 | ||
2271 | return 0; | |
2272 | } | |
2273 | ||
2274 | static int mxt_read_diagnostic_debug(struct mxt_data *data, u8 mode, | |
2275 | u16 *outbuf) | |
2276 | { | |
2277 | struct mxt_dbg *dbg = &data->dbg; | |
2278 | int retries = 0; | |
2279 | int page; | |
2280 | int ret; | |
2281 | u8 cmd = mode; | |
2282 | struct t37_debug *p; | |
2283 | u8 cmd_poll; | |
2284 | ||
2285 | for (page = 0; page < dbg->t37_pages; page++) { | |
2286 | p = dbg->t37_buf + page; | |
2287 | ||
2288 | ret = mxt_write_reg(data->client, dbg->diag_cmd_address, | |
2289 | cmd); | |
2290 | if (ret) | |
2291 | return ret; | |
2292 | ||
2293 | retries = 0; | |
2294 | msleep(20); | |
2295 | wait_cmd: | |
2296 | /* Read back command byte */ | |
2297 | ret = __mxt_read_reg(data->client, dbg->diag_cmd_address, | |
2298 | sizeof(cmd_poll), &cmd_poll); | |
2299 | if (ret) | |
2300 | return ret; | |
2301 | ||
2302 | /* Field is cleared once the command has been processed */ | |
2303 | if (cmd_poll) { | |
2304 | if (retries++ > 100) | |
2305 | return -EINVAL; | |
2306 | ||
2307 | msleep(20); | |
2308 | goto wait_cmd; | |
2309 | } | |
2310 | ||
2311 | /* Read T37 page */ | |
2312 | ret = __mxt_read_reg(data->client, dbg->t37_address, | |
2313 | sizeof(struct t37_debug), p); | |
2314 | if (ret) | |
2315 | return ret; | |
2316 | ||
2317 | if (p->mode != mode || p->page != page) { | |
2318 | dev_err(&data->client->dev, "T37 page mismatch\n"); | |
2319 | return -EINVAL; | |
2320 | } | |
2321 | ||
2322 | dev_dbg(&data->client->dev, "%s page:%d retries:%d\n", | |
2323 | __func__, page, retries); | |
2324 | ||
2325 | /* For remaining pages, write PAGEUP rather than mode */ | |
2326 | cmd = MXT_DIAGNOSTIC_PAGEUP; | |
2327 | } | |
2328 | ||
2329 | return mxt_convert_debug_pages(data, outbuf); | |
2330 | } | |
2331 | ||
ecfdd7e2 ND |
2332 | static int mxt_queue_setup(struct vb2_queue *q, |
2333 | unsigned int *nbuffers, unsigned int *nplanes, | |
2334 | unsigned int sizes[], struct device *alloc_devs[]) | |
2335 | { | |
2336 | struct mxt_data *data = q->drv_priv; | |
2337 | size_t size = data->dbg.t37_nodes * sizeof(u16); | |
2338 | ||
2339 | if (*nplanes) | |
2340 | return sizes[0] < size ? -EINVAL : 0; | |
2341 | ||
2342 | *nplanes = 1; | |
2343 | sizes[0] = size; | |
2344 | ||
2345 | return 0; | |
2346 | } | |
2347 | ||
2348 | static void mxt_buffer_queue(struct vb2_buffer *vb) | |
2349 | { | |
2350 | struct mxt_data *data = vb2_get_drv_priv(vb->vb2_queue); | |
2351 | u16 *ptr; | |
2352 | int ret; | |
06b3d3f3 | 2353 | u8 mode; |
ecfdd7e2 ND |
2354 | |
2355 | ptr = vb2_plane_vaddr(vb, 0); | |
2356 | if (!ptr) { | |
2357 | dev_err(&data->client->dev, "Error acquiring frame ptr\n"); | |
2358 | goto fault; | |
2359 | } | |
2360 | ||
06b3d3f3 ND |
2361 | switch (data->dbg.input) { |
2362 | case MXT_V4L_INPUT_DELTAS: | |
2363 | default: | |
2364 | mode = MXT_DIAGNOSTIC_DELTAS; | |
2365 | break; | |
2366 | ||
2367 | case MXT_V4L_INPUT_REFS: | |
2368 | mode = MXT_DIAGNOSTIC_REFS; | |
2369 | break; | |
2370 | } | |
2371 | ||
2372 | ret = mxt_read_diagnostic_debug(data, mode, ptr); | |
ecfdd7e2 ND |
2373 | if (ret) |
2374 | goto fault; | |
2375 | ||
2376 | vb2_set_plane_payload(vb, 0, data->dbg.t37_nodes * sizeof(u16)); | |
2377 | vb2_buffer_done(vb, VB2_BUF_STATE_DONE); | |
2378 | return; | |
2379 | ||
2380 | fault: | |
2381 | vb2_buffer_done(vb, VB2_BUF_STATE_ERROR); | |
2382 | } | |
2383 | ||
2384 | /* V4L2 structures */ | |
2385 | static const struct vb2_ops mxt_queue_ops = { | |
2386 | .queue_setup = mxt_queue_setup, | |
2387 | .buf_queue = mxt_buffer_queue, | |
2388 | .wait_prepare = vb2_ops_wait_prepare, | |
2389 | .wait_finish = vb2_ops_wait_finish, | |
2390 | }; | |
2391 | ||
2392 | static const struct vb2_queue mxt_queue = { | |
2393 | .type = V4L2_BUF_TYPE_VIDEO_CAPTURE, | |
2394 | .io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF | VB2_READ, | |
2395 | .buf_struct_size = sizeof(struct mxt_vb2_buffer), | |
2396 | .ops = &mxt_queue_ops, | |
2397 | .mem_ops = &vb2_vmalloc_memops, | |
2398 | .timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC, | |
2399 | .min_buffers_needed = 1, | |
2400 | }; | |
2401 | ||
2402 | static int mxt_vidioc_querycap(struct file *file, void *priv, | |
2403 | struct v4l2_capability *cap) | |
2404 | { | |
2405 | struct mxt_data *data = video_drvdata(file); | |
2406 | ||
2407 | strlcpy(cap->driver, "atmel_mxt_ts", sizeof(cap->driver)); | |
2408 | strlcpy(cap->card, "atmel_mxt_ts touch", sizeof(cap->card)); | |
2409 | snprintf(cap->bus_info, sizeof(cap->bus_info), | |
2410 | "I2C:%s", dev_name(&data->client->dev)); | |
2411 | return 0; | |
2412 | } | |
2413 | ||
2414 | static int mxt_vidioc_enum_input(struct file *file, void *priv, | |
2415 | struct v4l2_input *i) | |
2416 | { | |
06b3d3f3 | 2417 | if (i->index >= MXT_V4L_INPUT_MAX) |
ecfdd7e2 ND |
2418 | return -EINVAL; |
2419 | ||
2420 | i->type = V4L2_INPUT_TYPE_TOUCH; | |
06b3d3f3 ND |
2421 | |
2422 | switch (i->index) { | |
2423 | case MXT_V4L_INPUT_REFS: | |
2424 | strlcpy(i->name, "Mutual Capacitance References", | |
2425 | sizeof(i->name)); | |
2426 | break; | |
2427 | case MXT_V4L_INPUT_DELTAS: | |
2428 | strlcpy(i->name, "Mutual Capacitance Deltas", sizeof(i->name)); | |
2429 | break; | |
2430 | } | |
2431 | ||
ecfdd7e2 ND |
2432 | return 0; |
2433 | } | |
2434 | ||
2435 | static int mxt_set_input(struct mxt_data *data, unsigned int i) | |
2436 | { | |
2437 | struct v4l2_pix_format *f = &data->dbg.format; | |
2438 | ||
06b3d3f3 | 2439 | if (i >= MXT_V4L_INPUT_MAX) |
ecfdd7e2 ND |
2440 | return -EINVAL; |
2441 | ||
06b3d3f3 ND |
2442 | if (i == MXT_V4L_INPUT_DELTAS) |
2443 | f->pixelformat = V4L2_TCH_FMT_DELTA_TD16; | |
2444 | else | |
2445 | f->pixelformat = V4L2_TCH_FMT_TU16; | |
2446 | ||
de601f71 ND |
2447 | f->width = data->xy_switch ? data->ysize : data->xsize; |
2448 | f->height = data->xy_switch ? data->xsize : data->ysize; | |
ecfdd7e2 ND |
2449 | f->field = V4L2_FIELD_NONE; |
2450 | f->colorspace = V4L2_COLORSPACE_RAW; | |
2451 | f->bytesperline = f->width * sizeof(u16); | |
2452 | f->sizeimage = f->width * f->height * sizeof(u16); | |
2453 | ||
2454 | data->dbg.input = i; | |
2455 | ||
2456 | return 0; | |
2457 | } | |
2458 | ||
2459 | static int mxt_vidioc_s_input(struct file *file, void *priv, unsigned int i) | |
2460 | { | |
2461 | return mxt_set_input(video_drvdata(file), i); | |
2462 | } | |
2463 | ||
2464 | static int mxt_vidioc_g_input(struct file *file, void *priv, unsigned int *i) | |
2465 | { | |
2466 | struct mxt_data *data = video_drvdata(file); | |
2467 | ||
2468 | *i = data->dbg.input; | |
2469 | ||
2470 | return 0; | |
2471 | } | |
2472 | ||
2473 | static int mxt_vidioc_fmt(struct file *file, void *priv, struct v4l2_format *f) | |
2474 | { | |
2475 | struct mxt_data *data = video_drvdata(file); | |
2476 | ||
2477 | f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
2478 | f->fmt.pix = data->dbg.format; | |
2479 | ||
2480 | return 0; | |
2481 | } | |
2482 | ||
2483 | static int mxt_vidioc_enum_fmt(struct file *file, void *priv, | |
2484 | struct v4l2_fmtdesc *fmt) | |
2485 | { | |
2486 | if (fmt->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
2487 | return -EINVAL; | |
2488 | ||
06b3d3f3 ND |
2489 | switch (fmt->index) { |
2490 | case 0: | |
2491 | fmt->pixelformat = V4L2_TCH_FMT_TU16; | |
2492 | break; | |
2493 | ||
2494 | case 1: | |
2495 | fmt->pixelformat = V4L2_TCH_FMT_DELTA_TD16; | |
2496 | break; | |
2497 | ||
2498 | default: | |
2499 | return -EINVAL; | |
2500 | } | |
2501 | ||
ecfdd7e2 ND |
2502 | return 0; |
2503 | } | |
2504 | ||
2505 | static int mxt_vidioc_g_parm(struct file *file, void *fh, | |
2506 | struct v4l2_streamparm *a) | |
2507 | { | |
2508 | if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
2509 | return -EINVAL; | |
2510 | ||
2511 | a->parm.capture.readbuffers = 1; | |
2512 | a->parm.capture.timeperframe.numerator = 1; | |
2513 | a->parm.capture.timeperframe.denominator = 10; | |
2514 | return 0; | |
2515 | } | |
2516 | ||
2517 | static const struct v4l2_ioctl_ops mxt_video_ioctl_ops = { | |
2518 | .vidioc_querycap = mxt_vidioc_querycap, | |
2519 | ||
2520 | .vidioc_enum_fmt_vid_cap = mxt_vidioc_enum_fmt, | |
2521 | .vidioc_s_fmt_vid_cap = mxt_vidioc_fmt, | |
2522 | .vidioc_g_fmt_vid_cap = mxt_vidioc_fmt, | |
2523 | .vidioc_try_fmt_vid_cap = mxt_vidioc_fmt, | |
2524 | .vidioc_g_parm = mxt_vidioc_g_parm, | |
2525 | ||
2526 | .vidioc_enum_input = mxt_vidioc_enum_input, | |
2527 | .vidioc_g_input = mxt_vidioc_g_input, | |
2528 | .vidioc_s_input = mxt_vidioc_s_input, | |
2529 | ||
2530 | .vidioc_reqbufs = vb2_ioctl_reqbufs, | |
2531 | .vidioc_create_bufs = vb2_ioctl_create_bufs, | |
2532 | .vidioc_querybuf = vb2_ioctl_querybuf, | |
2533 | .vidioc_qbuf = vb2_ioctl_qbuf, | |
2534 | .vidioc_dqbuf = vb2_ioctl_dqbuf, | |
2535 | .vidioc_expbuf = vb2_ioctl_expbuf, | |
2536 | ||
2537 | .vidioc_streamon = vb2_ioctl_streamon, | |
2538 | .vidioc_streamoff = vb2_ioctl_streamoff, | |
2539 | }; | |
2540 | ||
2541 | static const struct video_device mxt_video_device = { | |
2542 | .name = "Atmel maxTouch", | |
2543 | .fops = &mxt_video_fops, | |
2544 | .ioctl_ops = &mxt_video_ioctl_ops, | |
2545 | .release = video_device_release_empty, | |
2546 | .device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_TOUCH | | |
2547 | V4L2_CAP_READWRITE | V4L2_CAP_STREAMING, | |
2548 | }; | |
2549 | ||
d6a39404 ND |
2550 | static void mxt_debug_init(struct mxt_data *data) |
2551 | { | |
068bdb67 | 2552 | struct mxt_info *info = data->info; |
d6a39404 ND |
2553 | struct mxt_dbg *dbg = &data->dbg; |
2554 | struct mxt_object *object; | |
ecfdd7e2 | 2555 | int error; |
d6a39404 ND |
2556 | |
2557 | object = mxt_get_object(data, MXT_GEN_COMMAND_T6); | |
2558 | if (!object) | |
2559 | goto error; | |
2560 | ||
2561 | dbg->diag_cmd_address = object->start_address + MXT_COMMAND_DIAGNOSTIC; | |
2562 | ||
2563 | object = mxt_get_object(data, MXT_DEBUG_DIAGNOSTIC_T37); | |
2564 | if (!object) | |
2565 | goto error; | |
2566 | ||
2567 | if (mxt_obj_size(object) != sizeof(struct t37_debug)) { | |
2568 | dev_warn(&data->client->dev, "Bad T37 size"); | |
2569 | goto error; | |
2570 | } | |
2571 | ||
2572 | dbg->t37_address = object->start_address; | |
2573 | ||
2574 | /* Calculate size of data and allocate buffer */ | |
2786489f | 2575 | dbg->t37_nodes = data->xsize * data->ysize; |
566d533a ND |
2576 | |
2577 | if (info->family_id == MXT_FAMILY_1386) | |
2578 | dbg->t37_pages = MXT1386_COLUMNS * MXT1386_PAGES_PER_COLUMN; | |
2579 | else | |
2580 | dbg->t37_pages = DIV_ROUND_UP(data->xsize * | |
d7ddf154 | 2581 | info->matrix_ysize * |
566d533a ND |
2582 | sizeof(u16), |
2583 | sizeof(dbg->t37_buf->data)); | |
d6a39404 ND |
2584 | |
2585 | dbg->t37_buf = devm_kmalloc_array(&data->client->dev, dbg->t37_pages, | |
2586 | sizeof(struct t37_debug), GFP_KERNEL); | |
2587 | if (!dbg->t37_buf) | |
2588 | goto error; | |
2589 | ||
ecfdd7e2 ND |
2590 | /* init channel to zero */ |
2591 | mxt_set_input(data, 0); | |
2592 | ||
2593 | /* register video device */ | |
2594 | snprintf(dbg->v4l2.name, sizeof(dbg->v4l2.name), "%s", "atmel_mxt_ts"); | |
2595 | error = v4l2_device_register(&data->client->dev, &dbg->v4l2); | |
2596 | if (error) | |
2597 | goto error; | |
2598 | ||
2599 | /* initialize the queue */ | |
2600 | mutex_init(&dbg->lock); | |
2601 | dbg->queue = mxt_queue; | |
2602 | dbg->queue.drv_priv = data; | |
2603 | dbg->queue.lock = &dbg->lock; | |
2604 | dbg->queue.dev = &data->client->dev; | |
2605 | ||
2606 | error = vb2_queue_init(&dbg->queue); | |
2607 | if (error) | |
2608 | goto error_unreg_v4l2; | |
2609 | ||
2610 | dbg->vdev = mxt_video_device; | |
2611 | dbg->vdev.v4l2_dev = &dbg->v4l2; | |
2612 | dbg->vdev.lock = &dbg->lock; | |
2613 | dbg->vdev.vfl_dir = VFL_DIR_RX; | |
2614 | dbg->vdev.queue = &dbg->queue; | |
2615 | video_set_drvdata(&dbg->vdev, data); | |
2616 | ||
2617 | error = video_register_device(&dbg->vdev, VFL_TYPE_TOUCH, -1); | |
2618 | if (error) | |
2619 | goto error_unreg_v4l2; | |
2620 | ||
d6a39404 ND |
2621 | return; |
2622 | ||
ecfdd7e2 ND |
2623 | error_unreg_v4l2: |
2624 | v4l2_device_unregister(&dbg->v4l2); | |
d6a39404 ND |
2625 | error: |
2626 | dev_warn(&data->client->dev, "Error initializing T37\n"); | |
2627 | } | |
2628 | #else | |
2629 | static void mxt_debug_init(struct mxt_data *data) | |
2630 | { | |
2631 | } | |
2632 | #endif | |
2633 | ||
50a77c65 ND |
2634 | static int mxt_configure_objects(struct mxt_data *data, |
2635 | const struct firmware *cfg) | |
2636 | { | |
2637 | struct device *dev = &data->client->dev; | |
50a77c65 ND |
2638 | int error; |
2639 | ||
7f3884f7 ND |
2640 | error = mxt_init_t7_power_cfg(data); |
2641 | if (error) { | |
2642 | dev_err(dev, "Failed to initialize power cfg\n"); | |
2643 | return error; | |
2644 | } | |
2645 | ||
50a77c65 ND |
2646 | if (cfg) { |
2647 | error = mxt_update_cfg(data, cfg); | |
2648 | if (error) | |
2649 | dev_warn(dev, "Error %d updating config\n", error); | |
7bed6805 | 2650 | } |
4cf51c38 | 2651 | |
b23157dc ND |
2652 | if (data->multitouch) { |
2653 | error = mxt_initialize_input_device(data); | |
2654 | if (error) | |
2655 | return error; | |
2656 | } else { | |
2657 | dev_warn(dev, "No touch object detected\n"); | |
2658 | } | |
4cf51c38 | 2659 | |
d6a39404 ND |
2660 | mxt_debug_init(data); |
2661 | ||
4cf51c38 JS |
2662 | return 0; |
2663 | } | |
2664 | ||
b19fc9ec DK |
2665 | /* Firmware Version is returned as Major.Minor.Build */ |
2666 | static ssize_t mxt_fw_version_show(struct device *dev, | |
2667 | struct device_attribute *attr, char *buf) | |
2668 | { | |
2669 | struct mxt_data *data = dev_get_drvdata(dev); | |
068bdb67 | 2670 | struct mxt_info *info = data->info; |
b19fc9ec DK |
2671 | return scnprintf(buf, PAGE_SIZE, "%u.%u.%02X\n", |
2672 | info->version >> 4, info->version & 0xf, info->build); | |
2673 | } | |
2674 | ||
2675 | /* Hardware Version is returned as FamilyID.VariantID */ | |
2676 | static ssize_t mxt_hw_version_show(struct device *dev, | |
2677 | struct device_attribute *attr, char *buf) | |
2678 | { | |
2679 | struct mxt_data *data = dev_get_drvdata(dev); | |
068bdb67 | 2680 | struct mxt_info *info = data->info; |
b19fc9ec DK |
2681 | return scnprintf(buf, PAGE_SIZE, "%u.%u\n", |
2682 | info->family_id, info->variant_id); | |
2683 | } | |
2684 | ||
794eb67e DK |
2685 | static ssize_t mxt_show_instance(char *buf, int count, |
2686 | struct mxt_object *object, int instance, | |
2687 | const u8 *val) | |
2688 | { | |
2689 | int i; | |
2690 | ||
1e0c0c5b | 2691 | if (mxt_obj_instances(object) > 1) |
794eb67e DK |
2692 | count += scnprintf(buf + count, PAGE_SIZE - count, |
2693 | "Instance %u\n", instance); | |
2694 | ||
1e0c0c5b | 2695 | for (i = 0; i < mxt_obj_size(object); i++) |
794eb67e DK |
2696 | count += scnprintf(buf + count, PAGE_SIZE - count, |
2697 | "\t[%2u]: %02x (%d)\n", i, val[i], val[i]); | |
2698 | count += scnprintf(buf + count, PAGE_SIZE - count, "\n"); | |
2699 | ||
2700 | return count; | |
2701 | } | |
2702 | ||
7686b108 | 2703 | static ssize_t mxt_object_show(struct device *dev, |
4cf51c38 JS |
2704 | struct device_attribute *attr, char *buf) |
2705 | { | |
7686b108 IV |
2706 | struct mxt_data *data = dev_get_drvdata(dev); |
2707 | struct mxt_object *object; | |
4cf51c38 JS |
2708 | int count = 0; |
2709 | int i, j; | |
2710 | int error; | |
43a91d51 | 2711 | u8 *obuf; |
4cf51c38 | 2712 | |
43a91d51 DK |
2713 | /* Pre-allocate buffer large enough to hold max sized object. */ |
2714 | obuf = kmalloc(256, GFP_KERNEL); | |
2715 | if (!obuf) | |
2716 | return -ENOMEM; | |
4cf51c38 | 2717 | |
43a91d51 | 2718 | error = 0; |
068bdb67 | 2719 | for (i = 0; i < data->info->object_num; i++) { |
4cf51c38 JS |
2720 | object = data->object_table + i; |
2721 | ||
91630955 | 2722 | if (!mxt_object_readable(object->type)) |
4cf51c38 | 2723 | continue; |
4cf51c38 | 2724 | |
91630955 DK |
2725 | count += scnprintf(buf + count, PAGE_SIZE - count, |
2726 | "T%u:\n", object->type); | |
4cf51c38 | 2727 | |
1e0c0c5b DK |
2728 | for (j = 0; j < mxt_obj_instances(object); j++) { |
2729 | u16 size = mxt_obj_size(object); | |
794eb67e | 2730 | u16 addr = object->start_address + j * size; |
43a91d51 | 2731 | |
794eb67e | 2732 | error = __mxt_read_reg(data->client, addr, size, obuf); |
4cf51c38 | 2733 | if (error) |
794eb67e | 2734 | goto done; |
4cf51c38 | 2735 | |
794eb67e | 2736 | count = mxt_show_instance(buf, count, object, j, obuf); |
4cf51c38 | 2737 | } |
4cf51c38 JS |
2738 | } |
2739 | ||
794eb67e | 2740 | done: |
43a91d51 DK |
2741 | kfree(obuf); |
2742 | return error ?: count; | |
4cf51c38 JS |
2743 | } |
2744 | ||
f2ac6cb9 ND |
2745 | static int mxt_check_firmware_format(struct device *dev, |
2746 | const struct firmware *fw) | |
2747 | { | |
2748 | unsigned int pos = 0; | |
2749 | char c; | |
2750 | ||
2751 | while (pos < fw->size) { | |
2752 | c = *(fw->data + pos); | |
2753 | ||
2754 | if (c < '0' || (c > '9' && c < 'A') || c > 'F') | |
2755 | return 0; | |
2756 | ||
2757 | pos++; | |
2758 | } | |
2759 | ||
2760 | /* | |
2761 | * To convert file try: | |
2762 | * xxd -r -p mXTXXX__APP_VX-X-XX.enc > maxtouch.fw | |
2763 | */ | |
2764 | dev_err(dev, "Aborting: firmware file must be in binary format\n"); | |
2765 | ||
2766 | return -EINVAL; | |
2767 | } | |
2768 | ||
7686b108 | 2769 | static int mxt_load_fw(struct device *dev, const char *fn) |
4cf51c38 | 2770 | { |
7686b108 | 2771 | struct mxt_data *data = dev_get_drvdata(dev); |
4cf51c38 JS |
2772 | const struct firmware *fw = NULL; |
2773 | unsigned int frame_size; | |
2774 | unsigned int pos = 0; | |
f943c74a | 2775 | unsigned int retry = 0; |
f477c758 | 2776 | unsigned int frame = 0; |
4cf51c38 JS |
2777 | int ret; |
2778 | ||
2779 | ret = request_firmware(&fw, fn, dev); | |
2780 | if (ret) { | |
2781 | dev_err(dev, "Unable to open firmware %s\n", fn); | |
2782 | return ret; | |
2783 | } | |
2784 | ||
f2ac6cb9 ND |
2785 | /* Check for incorrect enc file */ |
2786 | ret = mxt_check_firmware_format(dev, fw); | |
2787 | if (ret) | |
2788 | goto release_firmware; | |
2789 | ||
a9fdd1e6 ND |
2790 | if (!data->in_bootloader) { |
2791 | /* Change to the bootloader mode */ | |
2792 | data->in_bootloader = true; | |
d79e7e47 | 2793 | |
a9fdd1e6 ND |
2794 | ret = mxt_t6_command(data, MXT_COMMAND_RESET, |
2795 | MXT_BOOT_VALUE, false); | |
2796 | if (ret) | |
2797 | goto release_firmware; | |
a4a2ef46 | 2798 | |
a9fdd1e6 | 2799 | msleep(MXT_RESET_TIME); |
8efaa5e5 ND |
2800 | |
2801 | /* Do not need to scan since we know family ID */ | |
2802 | ret = mxt_lookup_bootloader_address(data, 0); | |
2803 | if (ret) | |
2804 | goto release_firmware; | |
58e4aeee SW |
2805 | |
2806 | mxt_free_input_device(data); | |
2807 | mxt_free_object_table(data); | |
8efaa5e5 ND |
2808 | } else { |
2809 | enable_irq(data->irq); | |
a9fdd1e6 | 2810 | } |
4cf51c38 | 2811 | |
d79e7e47 BL |
2812 | reinit_completion(&data->bl_completion); |
2813 | ||
385deb96 ND |
2814 | ret = mxt_check_bootloader(data, MXT_WAITING_BOOTLOAD_CMD, false); |
2815 | if (ret) { | |
2816 | /* Bootloader may still be unlocked from previous attempt */ | |
2817 | ret = mxt_check_bootloader(data, MXT_WAITING_FRAME_DATA, false); | |
2818 | if (ret) | |
2819 | goto disable_irq; | |
2820 | } else { | |
2821 | dev_info(dev, "Unlocking bootloader\n"); | |
4cf51c38 | 2822 | |
385deb96 | 2823 | /* Unlock bootloader */ |
8efaa5e5 | 2824 | ret = mxt_send_bootloader_cmd(data, true); |
385deb96 ND |
2825 | if (ret) |
2826 | goto disable_irq; | |
2827 | } | |
4cf51c38 JS |
2828 | |
2829 | while (pos < fw->size) { | |
385deb96 | 2830 | ret = mxt_check_bootloader(data, MXT_WAITING_FRAME_DATA, true); |
4cf51c38 | 2831 | if (ret) |
d79e7e47 | 2832 | goto disable_irq; |
4cf51c38 JS |
2833 | |
2834 | frame_size = ((*(fw->data + pos) << 8) | *(fw->data + pos + 1)); | |
2835 | ||
f943c74a | 2836 | /* Take account of CRC bytes */ |
4cf51c38 JS |
2837 | frame_size += 2; |
2838 | ||
2839 | /* Write one frame to device */ | |
f28a842d ND |
2840 | ret = mxt_bootloader_write(data, fw->data + pos, frame_size); |
2841 | if (ret) | |
2842 | goto disable_irq; | |
4cf51c38 | 2843 | |
385deb96 | 2844 | ret = mxt_check_bootloader(data, MXT_FRAME_CRC_PASS, true); |
f943c74a ND |
2845 | if (ret) { |
2846 | retry++; | |
2847 | ||
2848 | /* Back off by 20ms per retry */ | |
2849 | msleep(retry * 20); | |
4cf51c38 | 2850 | |
f943c74a ND |
2851 | if (retry > 20) { |
2852 | dev_err(dev, "Retry count exceeded\n"); | |
2853 | goto disable_irq; | |
2854 | } | |
2855 | } else { | |
2856 | retry = 0; | |
2857 | pos += frame_size; | |
f477c758 | 2858 | frame++; |
f943c74a | 2859 | } |
4cf51c38 | 2860 | |
f477c758 ND |
2861 | if (frame % 50 == 0) |
2862 | dev_dbg(dev, "Sent %d frames, %d/%zd bytes\n", | |
2863 | frame, pos, fw->size); | |
4cf51c38 JS |
2864 | } |
2865 | ||
a0434b75 | 2866 | /* Wait for flash. */ |
a4a2ef46 IV |
2867 | ret = mxt_wait_for_completion(data, &data->bl_completion, |
2868 | MXT_FW_RESET_TIME); | |
a0434b75 BL |
2869 | if (ret) |
2870 | goto disable_irq; | |
2871 | ||
f477c758 ND |
2872 | dev_dbg(dev, "Sent %d frames, %d bytes\n", frame, pos); |
2873 | ||
a0434b75 BL |
2874 | /* |
2875 | * Wait for device to reset. Some bootloader versions do not assert | |
2876 | * the CHG line after bootloading has finished, so ignore potential | |
2877 | * errors. | |
2878 | */ | |
a4a2ef46 | 2879 | mxt_wait_for_completion(data, &data->bl_completion, MXT_FW_RESET_TIME); |
a0434b75 | 2880 | |
d79e7e47 BL |
2881 | data->in_bootloader = false; |
2882 | ||
2883 | disable_irq: | |
2884 | disable_irq(data->irq); | |
a4a2ef46 | 2885 | release_firmware: |
4cf51c38 | 2886 | release_firmware(fw); |
4cf51c38 JS |
2887 | return ret; |
2888 | } | |
2889 | ||
7686b108 | 2890 | static ssize_t mxt_update_fw_store(struct device *dev, |
4cf51c38 JS |
2891 | struct device_attribute *attr, |
2892 | const char *buf, size_t count) | |
2893 | { | |
7686b108 | 2894 | struct mxt_data *data = dev_get_drvdata(dev); |
4cf51c38 JS |
2895 | int error; |
2896 | ||
7686b108 | 2897 | error = mxt_load_fw(dev, MXT_FW_NAME); |
4cf51c38 JS |
2898 | if (error) { |
2899 | dev_err(dev, "The firmware update failed(%d)\n", error); | |
2900 | count = error; | |
2901 | } else { | |
7bed6805 ND |
2902 | dev_info(dev, "The firmware update succeeded\n"); |
2903 | ||
dd24dcf5 | 2904 | error = mxt_initialize(data); |
d79e7e47 BL |
2905 | if (error) |
2906 | return error; | |
2907 | } | |
08960a07 | 2908 | |
4cf51c38 JS |
2909 | return count; |
2910 | } | |
2911 | ||
b19fc9ec DK |
2912 | static DEVICE_ATTR(fw_version, S_IRUGO, mxt_fw_version_show, NULL); |
2913 | static DEVICE_ATTR(hw_version, S_IRUGO, mxt_hw_version_show, NULL); | |
71b3e938 DK |
2914 | static DEVICE_ATTR(object, S_IRUGO, mxt_object_show, NULL); |
2915 | static DEVICE_ATTR(update_fw, S_IWUSR, NULL, mxt_update_fw_store); | |
4cf51c38 | 2916 | |
7686b108 | 2917 | static struct attribute *mxt_attrs[] = { |
b19fc9ec DK |
2918 | &dev_attr_fw_version.attr, |
2919 | &dev_attr_hw_version.attr, | |
4cf51c38 JS |
2920 | &dev_attr_object.attr, |
2921 | &dev_attr_update_fw.attr, | |
2922 | NULL | |
2923 | }; | |
2924 | ||
7686b108 IV |
2925 | static const struct attribute_group mxt_attr_group = { |
2926 | .attrs = mxt_attrs, | |
4cf51c38 JS |
2927 | }; |
2928 | ||
7686b108 | 2929 | static void mxt_start(struct mxt_data *data) |
4cf51c38 | 2930 | { |
d80808e1 | 2931 | switch (data->suspend_mode) { |
7f3884f7 ND |
2932 | case MXT_SUSPEND_T9_CTRL: |
2933 | mxt_soft_reset(data); | |
2934 | ||
2935 | /* Touch enable */ | |
2936 | /* 0x83 = SCANEN | RPTEN | ENABLE */ | |
2937 | mxt_write_object(data, | |
2938 | MXT_TOUCH_MULTI_T9, MXT_T9_CTRL, 0x83); | |
2939 | break; | |
2940 | ||
2941 | case MXT_SUSPEND_DEEP_SLEEP: | |
2942 | default: | |
2943 | mxt_set_t7_power_cfg(data, MXT_POWER_CFG_RUN); | |
2944 | ||
2945 | /* Recalibrate since chip has been in deep sleep */ | |
2946 | mxt_t6_command(data, MXT_COMMAND_CALIBRATE, 1, false); | |
2947 | break; | |
2948 | } | |
4cf51c38 JS |
2949 | } |
2950 | ||
7686b108 | 2951 | static void mxt_stop(struct mxt_data *data) |
4cf51c38 | 2952 | { |
d80808e1 | 2953 | switch (data->suspend_mode) { |
7f3884f7 ND |
2954 | case MXT_SUSPEND_T9_CTRL: |
2955 | /* Touch disable */ | |
2956 | mxt_write_object(data, | |
2957 | MXT_TOUCH_MULTI_T9, MXT_T9_CTRL, 0); | |
2958 | break; | |
2959 | ||
2960 | case MXT_SUSPEND_DEEP_SLEEP: | |
2961 | default: | |
2962 | mxt_set_t7_power_cfg(data, MXT_POWER_CFG_DEEPSLEEP); | |
2963 | break; | |
2964 | } | |
4cf51c38 JS |
2965 | } |
2966 | ||
7686b108 | 2967 | static int mxt_input_open(struct input_dev *dev) |
4cf51c38 | 2968 | { |
7686b108 | 2969 | struct mxt_data *data = input_get_drvdata(dev); |
4cf51c38 | 2970 | |
7686b108 | 2971 | mxt_start(data); |
4cf51c38 JS |
2972 | |
2973 | return 0; | |
2974 | } | |
2975 | ||
7686b108 | 2976 | static void mxt_input_close(struct input_dev *dev) |
4cf51c38 | 2977 | { |
7686b108 | 2978 | struct mxt_data *data = input_get_drvdata(dev); |
4cf51c38 | 2979 | |
7686b108 | 2980 | mxt_stop(data); |
4cf51c38 JS |
2981 | } |
2982 | ||
96a938aa | 2983 | static int mxt_parse_device_properties(struct mxt_data *data) |
78188be3 | 2984 | { |
93afb1d6 | 2985 | static const char keymap_property[] = "linux,gpio-keymap"; |
96a938aa | 2986 | struct device *dev = &data->client->dev; |
78188be3 | 2987 | u32 *keymap; |
93afb1d6 DT |
2988 | int n_keys; |
2989 | int error; | |
78188be3 | 2990 | |
96a938aa DT |
2991 | if (device_property_present(dev, keymap_property)) { |
2992 | n_keys = device_property_read_u32_array(dev, keymap_property, | |
93afb1d6 DT |
2993 | NULL, 0); |
2994 | if (n_keys <= 0) { | |
2995 | error = n_keys < 0 ? n_keys : -EINVAL; | |
96a938aa | 2996 | dev_err(dev, "invalid/malformed '%s' property: %d\n", |
93afb1d6 | 2997 | keymap_property, error); |
96a938aa | 2998 | return error; |
93afb1d6 | 2999 | } |
78188be3 | 3000 | |
96a938aa | 3001 | keymap = devm_kmalloc_array(dev, n_keys, sizeof(*keymap), |
93afb1d6 | 3002 | GFP_KERNEL); |
78188be3 | 3003 | if (!keymap) |
96a938aa | 3004 | return -ENOMEM; |
78188be3 | 3005 | |
96a938aa | 3006 | error = device_property_read_u32_array(dev, keymap_property, |
93afb1d6 DT |
3007 | keymap, n_keys); |
3008 | if (error) { | |
96a938aa | 3009 | dev_err(dev, "failed to parse '%s' property: %d\n", |
93afb1d6 | 3010 | keymap_property, error); |
96a938aa | 3011 | return error; |
93afb1d6 | 3012 | } |
78188be3 | 3013 | |
96a938aa DT |
3014 | data->t19_keymap = keymap; |
3015 | data->t19_num_keys = n_keys; | |
78188be3 SW |
3016 | } |
3017 | ||
96a938aa | 3018 | return 0; |
78188be3 | 3019 | } |
4f8d8088 | 3020 | |
d80808e1 DT |
3021 | static const struct dmi_system_id chromebook_T9_suspend_dmi[] = { |
3022 | { | |
3023 | .matches = { | |
3024 | DMI_MATCH(DMI_SYS_VENDOR, "GOOGLE"), | |
3025 | DMI_MATCH(DMI_PRODUCT_NAME, "Link"), | |
3026 | }, | |
3027 | }, | |
3028 | { | |
3029 | .matches = { | |
3030 | DMI_MATCH(DMI_PRODUCT_NAME, "Peppy"), | |
3031 | }, | |
3032 | }, | |
3033 | { } | |
3034 | }; | |
3035 | ||
78188be3 | 3036 | static int mxt_probe(struct i2c_client *client, const struct i2c_device_id *id) |
4cf51c38 | 3037 | { |
7686b108 | 3038 | struct mxt_data *data; |
4cf51c38 JS |
3039 | int error; |
3040 | ||
7cf432bf DT |
3041 | /* |
3042 | * Ignore devices that do not have device properties attached to | |
3043 | * them, as we need help determining whether we are dealing with | |
3044 | * touch screen or touchpad. | |
3045 | * | |
3046 | * So far on x86 the only users of Atmel touch controllers are | |
3047 | * Chromebooks, and chromeos_laptop driver will ensure that | |
3048 | * necessary properties are provided (if firmware does not do that). | |
3049 | */ | |
3050 | if (!device_property_present(&client->dev, "compatible")) | |
3051 | return -ENXIO; | |
3052 | ||
96a938aa DT |
3053 | /* |
3054 | * Ignore ACPI devices representing bootloader mode. | |
3055 | * | |
3056 | * This is a bit of a hack: Google Chromebook BIOS creates ACPI | |
3057 | * devices for both application and bootloader modes, but we are | |
3058 | * interested in application mode only (if device is in bootloader | |
3059 | * mode we'll end up switching into application anyway). So far | |
3060 | * application mode addresses were all above 0x40, so we'll use it | |
3061 | * as a threshold. | |
3062 | */ | |
3063 | if (ACPI_COMPANION(&client->dev) && client->addr < 0x40) | |
3064 | return -ENXIO; | |
4cf51c38 | 3065 | |
8cc8446b SR |
3066 | data = devm_kzalloc(&client->dev, sizeof(struct mxt_data), GFP_KERNEL); |
3067 | if (!data) | |
7a53d609 | 3068 | return -ENOMEM; |
4cf51c38 | 3069 | |
ec02ac2b DK |
3070 | snprintf(data->phys, sizeof(data->phys), "i2c-%u-%04x/input0", |
3071 | client->adapter->nr, client->addr); | |
22dfab7f | 3072 | |
910d8051 | 3073 | data->client = client; |
910d8051 | 3074 | data->irq = client->irq; |
7a53d609 | 3075 | i2c_set_clientdata(client, data); |
910d8051 | 3076 | |
d79e7e47 | 3077 | init_completion(&data->bl_completion); |
a4a2ef46 | 3078 | init_completion(&data->reset_completion); |
c3f78043 | 3079 | init_completion(&data->crc_completion); |
d79e7e47 | 3080 | |
d80808e1 DT |
3081 | data->suspend_mode = dmi_check_system(chromebook_T9_suspend_dmi) ? |
3082 | MXT_SUSPEND_T9_CTRL : MXT_SUSPEND_DEEP_SLEEP; | |
3083 | ||
96a938aa DT |
3084 | error = mxt_parse_device_properties(data); |
3085 | if (error) | |
3086 | return error; | |
3087 | ||
f657b00d SR |
3088 | data->reset_gpio = devm_gpiod_get_optional(&client->dev, |
3089 | "reset", GPIOD_OUT_LOW); | |
3090 | if (IS_ERR(data->reset_gpio)) { | |
3091 | error = PTR_ERR(data->reset_gpio); | |
3092 | dev_err(&client->dev, "Failed to get reset gpio: %d\n", error); | |
3093 | return error; | |
3094 | } | |
3095 | ||
8cc8446b | 3096 | error = devm_request_threaded_irq(&client->dev, client->irq, |
96a938aa | 3097 | NULL, mxt_interrupt, IRQF_ONESHOT, |
8cc8446b | 3098 | client->name, data); |
dd24dcf5 ND |
3099 | if (error) { |
3100 | dev_err(&client->dev, "Failed to register interrupt\n"); | |
8cc8446b | 3101 | return error; |
dd24dcf5 ND |
3102 | } |
3103 | ||
ca1cd36c SR |
3104 | disable_irq(client->irq); |
3105 | ||
f657b00d | 3106 | if (data->reset_gpio) { |
ca1cd36c | 3107 | msleep(MXT_RESET_GPIO_TIME); |
f657b00d | 3108 | gpiod_set_value(data->reset_gpio, 1); |
ca1cd36c | 3109 | msleep(MXT_RESET_INVALID_CHG); |
f657b00d SR |
3110 | } |
3111 | ||
cb159115 DK |
3112 | error = mxt_initialize(data); |
3113 | if (error) | |
8cc8446b | 3114 | return error; |
4cf51c38 | 3115 | |
7686b108 | 3116 | error = sysfs_create_group(&client->dev.kobj, &mxt_attr_group); |
7bed6805 ND |
3117 | if (error) { |
3118 | dev_err(&client->dev, "Failure %d creating sysfs group\n", | |
3119 | error); | |
7a53d609 | 3120 | goto err_free_object; |
7bed6805 | 3121 | } |
4cf51c38 JS |
3122 | |
3123 | return 0; | |
3124 | ||
4cf51c38 | 3125 | err_free_object: |
58e4aeee | 3126 | mxt_free_input_device(data); |
5f3f9bc2 | 3127 | mxt_free_object_table(data); |
4cf51c38 JS |
3128 | return error; |
3129 | } | |
3130 | ||
e2619cf7 | 3131 | static int mxt_remove(struct i2c_client *client) |
4cf51c38 | 3132 | { |
7686b108 | 3133 | struct mxt_data *data = i2c_get_clientdata(client); |
4cf51c38 | 3134 | |
8cc8446b | 3135 | disable_irq(data->irq); |
7686b108 | 3136 | sysfs_remove_group(&client->dev.kobj, &mxt_attr_group); |
58e4aeee | 3137 | mxt_free_input_device(data); |
5f3f9bc2 | 3138 | mxt_free_object_table(data); |
4cf51c38 JS |
3139 | |
3140 | return 0; | |
3141 | } | |
3142 | ||
02b6a58b | 3143 | static int __maybe_unused mxt_suspend(struct device *dev) |
4cf51c38 | 3144 | { |
8b5fce06 | 3145 | struct i2c_client *client = to_i2c_client(dev); |
7686b108 | 3146 | struct mxt_data *data = i2c_get_clientdata(client); |
4cf51c38 JS |
3147 | struct input_dev *input_dev = data->input_dev; |
3148 | ||
50fabb02 PX |
3149 | if (!input_dev) |
3150 | return 0; | |
3151 | ||
4cf51c38 JS |
3152 | mutex_lock(&input_dev->mutex); |
3153 | ||
3154 | if (input_dev->users) | |
7686b108 | 3155 | mxt_stop(data); |
4cf51c38 JS |
3156 | |
3157 | mutex_unlock(&input_dev->mutex); | |
3158 | ||
3159 | return 0; | |
3160 | } | |
3161 | ||
02b6a58b | 3162 | static int __maybe_unused mxt_resume(struct device *dev) |
4cf51c38 | 3163 | { |
8b5fce06 | 3164 | struct i2c_client *client = to_i2c_client(dev); |
7686b108 | 3165 | struct mxt_data *data = i2c_get_clientdata(client); |
4cf51c38 JS |
3166 | struct input_dev *input_dev = data->input_dev; |
3167 | ||
50fabb02 PX |
3168 | if (!input_dev) |
3169 | return 0; | |
3170 | ||
4cf51c38 JS |
3171 | mutex_lock(&input_dev->mutex); |
3172 | ||
3173 | if (input_dev->users) | |
7686b108 | 3174 | mxt_start(data); |
4cf51c38 JS |
3175 | |
3176 | mutex_unlock(&input_dev->mutex); | |
3177 | ||
3178 | return 0; | |
3179 | } | |
4cf51c38 | 3180 | |
3a73c816 DK |
3181 | static SIMPLE_DEV_PM_OPS(mxt_pm_ops, mxt_suspend, mxt_resume); |
3182 | ||
78188be3 SW |
3183 | static const struct of_device_id mxt_of_match[] = { |
3184 | { .compatible = "atmel,maxtouch", }, | |
f6eeb9e5 JMC |
3185 | /* Compatibles listed below are deprecated */ |
3186 | { .compatible = "atmel,qt602240_ts", }, | |
3187 | { .compatible = "atmel,atmel_mxt_ts", }, | |
3188 | { .compatible = "atmel,atmel_mxt_tp", }, | |
3189 | { .compatible = "atmel,mXT224", }, | |
78188be3 SW |
3190 | {}, |
3191 | }; | |
3192 | MODULE_DEVICE_TABLE(of, mxt_of_match); | |
3193 | ||
4f8d8088 DT |
3194 | #ifdef CONFIG_ACPI |
3195 | static const struct acpi_device_id mxt_acpi_id[] = { | |
3196 | { "ATML0000", 0 }, /* Touchpad */ | |
3197 | { "ATML0001", 0 }, /* Touchscreen */ | |
3198 | { } | |
3199 | }; | |
3200 | MODULE_DEVICE_TABLE(acpi, mxt_acpi_id); | |
3201 | #endif | |
3202 | ||
7686b108 | 3203 | static const struct i2c_device_id mxt_id[] = { |
4cf51c38 | 3204 | { "qt602240_ts", 0 }, |
7686b108 | 3205 | { "atmel_mxt_ts", 0 }, |
22dfab7f | 3206 | { "atmel_mxt_tp", 0 }, |
b7d21058 | 3207 | { "maxtouch", 0 }, |
46ee2a05 | 3208 | { "mXT224", 0 }, |
4cf51c38 JS |
3209 | { } |
3210 | }; | |
7686b108 | 3211 | MODULE_DEVICE_TABLE(i2c, mxt_id); |
4cf51c38 | 3212 | |
7686b108 | 3213 | static struct i2c_driver mxt_driver = { |
4cf51c38 | 3214 | .driver = { |
7686b108 | 3215 | .name = "atmel_mxt_ts", |
96a938aa | 3216 | .of_match_table = mxt_of_match, |
4f8d8088 | 3217 | .acpi_match_table = ACPI_PTR(mxt_acpi_id), |
7686b108 | 3218 | .pm = &mxt_pm_ops, |
4cf51c38 | 3219 | }, |
7686b108 | 3220 | .probe = mxt_probe, |
1cb0aa88 | 3221 | .remove = mxt_remove, |
7686b108 | 3222 | .id_table = mxt_id, |
4cf51c38 JS |
3223 | }; |
3224 | ||
1b92c1cf | 3225 | module_i2c_driver(mxt_driver); |
4cf51c38 JS |
3226 | |
3227 | /* Module information */ | |
3228 | MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>"); | |
7686b108 | 3229 | MODULE_DESCRIPTION("Atmel maXTouch Touchscreen driver"); |
4cf51c38 | 3230 | MODULE_LICENSE("GPL"); |