Commit | Line | Data |
---|---|---|
4cf51c38 | 1 | /* |
7686b108 | 2 | * Atmel maXTouch Touchscreen driver |
4cf51c38 JS |
3 | * |
4 | * Copyright (C) 2010 Samsung Electronics Co.Ltd | |
50a77c65 | 5 | * Copyright (C) 2011-2014 Atmel Corporation |
1e0c0c5b | 6 | * Copyright (C) 2012 Google, Inc. |
f3c4a8f8 | 7 | * Copyright (C) 2016 Zodiac Inflight Innovations |
1e0c0c5b | 8 | * |
4cf51c38 JS |
9 | * Author: Joonyoung Shim <jy0922.shim@samsung.com> |
10 | * | |
11 | * This program is free software; you can redistribute it and/or modify it | |
12 | * under the terms of the GNU General Public License as published by the | |
13 | * Free Software Foundation; either version 2 of the License, or (at your | |
14 | * option) any later version. | |
15 | * | |
16 | */ | |
17 | ||
4f8d8088 DT |
18 | #include <linux/acpi.h> |
19 | #include <linux/dmi.h> | |
4cf51c38 | 20 | #include <linux/module.h> |
d79e7e47 BL |
21 | #include <linux/init.h> |
22 | #include <linux/completion.h> | |
4cf51c38 JS |
23 | #include <linux/delay.h> |
24 | #include <linux/firmware.h> | |
25 | #include <linux/i2c.h> | |
8b86c1c2 | 26 | #include <linux/input/mt.h> |
4cf51c38 | 27 | #include <linux/interrupt.h> |
78188be3 | 28 | #include <linux/of.h> |
96a938aa | 29 | #include <linux/property.h> |
4cf51c38 | 30 | #include <linux/slab.h> |
f657b00d | 31 | #include <linux/gpio/consumer.h> |
93afb1d6 | 32 | #include <linux/property.h> |
b23157dc | 33 | #include <asm/unaligned.h> |
ecfdd7e2 ND |
34 | #include <media/v4l2-device.h> |
35 | #include <media/v4l2-ioctl.h> | |
36 | #include <media/videobuf2-v4l2.h> | |
37 | #include <media/videobuf2-vmalloc.h> | |
4cf51c38 | 38 | |
50a77c65 | 39 | /* Firmware files */ |
7686b108 | 40 | #define MXT_FW_NAME "maxtouch.fw" |
50a77c65 ND |
41 | #define MXT_CFG_NAME "maxtouch.cfg" |
42 | #define MXT_CFG_MAGIC "OBP_RAW V1" | |
4cf51c38 JS |
43 | |
44 | /* Registers */ | |
7686b108 | 45 | #define MXT_OBJECT_START 0x07 |
7686b108 | 46 | #define MXT_OBJECT_SIZE 6 |
4ce6fa01 ND |
47 | #define MXT_INFO_CHECKSUM_SIZE 3 |
48 | #define MXT_MAX_BLOCK_WRITE 256 | |
4cf51c38 JS |
49 | |
50 | /* Object types */ | |
81c88a71 IV |
51 | #define MXT_DEBUG_DIAGNOSTIC_T37 37 |
52 | #define MXT_GEN_MESSAGE_T5 5 | |
53 | #define MXT_GEN_COMMAND_T6 6 | |
54 | #define MXT_GEN_POWER_T7 7 | |
55 | #define MXT_GEN_ACQUIRE_T8 8 | |
56 | #define MXT_GEN_DATASOURCE_T53 53 | |
57 | #define MXT_TOUCH_MULTI_T9 9 | |
58 | #define MXT_TOUCH_KEYARRAY_T15 15 | |
59 | #define MXT_TOUCH_PROXIMITY_T23 23 | |
60 | #define MXT_TOUCH_PROXKEY_T52 52 | |
61 | #define MXT_PROCI_GRIPFACE_T20 20 | |
62 | #define MXT_PROCG_NOISE_T22 22 | |
63 | #define MXT_PROCI_ONETOUCH_T24 24 | |
64 | #define MXT_PROCI_TWOTOUCH_T27 27 | |
65 | #define MXT_PROCI_GRIP_T40 40 | |
66 | #define MXT_PROCI_PALM_T41 41 | |
67 | #define MXT_PROCI_TOUCHSUPPRESSION_T42 42 | |
68 | #define MXT_PROCI_STYLUS_T47 47 | |
69 | #define MXT_PROCG_NOISESUPPRESSION_T48 48 | |
70 | #define MXT_SPT_COMMSCONFIG_T18 18 | |
71 | #define MXT_SPT_GPIOPWM_T19 19 | |
72 | #define MXT_SPT_SELFTEST_T25 25 | |
73 | #define MXT_SPT_CTECONFIG_T28 28 | |
74 | #define MXT_SPT_USERDATA_T38 38 | |
75 | #define MXT_SPT_DIGITIZER_T43 43 | |
76 | #define MXT_SPT_MESSAGECOUNT_T44 44 | |
77 | #define MXT_SPT_CTECONFIG_T46 46 | |
b23157dc | 78 | #define MXT_TOUCH_MULTITOUCHSCREEN_T100 100 |
81c88a71 | 79 | |
5f3f9bc2 ND |
80 | /* MXT_GEN_MESSAGE_T5 object */ |
81 | #define MXT_RPTID_NOMSG 0xff | |
82 | ||
81c88a71 | 83 | /* MXT_GEN_COMMAND_T6 field */ |
7686b108 IV |
84 | #define MXT_COMMAND_RESET 0 |
85 | #define MXT_COMMAND_BACKUPNV 1 | |
86 | #define MXT_COMMAND_CALIBRATE 2 | |
87 | #define MXT_COMMAND_REPORTALL 3 | |
88 | #define MXT_COMMAND_DIAGNOSTIC 5 | |
89 | ||
a4a2ef46 IV |
90 | /* Define for T6 status byte */ |
91 | #define MXT_T6_STATUS_RESET (1 << 7) | |
497767d1 ND |
92 | #define MXT_T6_STATUS_OFL (1 << 6) |
93 | #define MXT_T6_STATUS_SIGERR (1 << 5) | |
94 | #define MXT_T6_STATUS_CAL (1 << 4) | |
95 | #define MXT_T6_STATUS_CFGERR (1 << 3) | |
96 | #define MXT_T6_STATUS_COMSERR (1 << 2) | |
a4a2ef46 | 97 | |
81c88a71 | 98 | /* MXT_GEN_POWER_T7 field */ |
7f3884f7 ND |
99 | struct t7_config { |
100 | u8 idle; | |
101 | u8 active; | |
102 | } __packed; | |
103 | ||
104 | #define MXT_POWER_CFG_RUN 0 | |
105 | #define MXT_POWER_CFG_DEEPSLEEP 1 | |
7686b108 | 106 | |
81c88a71 | 107 | /* MXT_TOUCH_MULTI_T9 field */ |
7f3884f7 | 108 | #define MXT_T9_CTRL 0 |
2786489f ND |
109 | #define MXT_T9_XSIZE 3 |
110 | #define MXT_T9_YSIZE 4 | |
61dc1aba ND |
111 | #define MXT_T9_ORIENT 9 |
112 | #define MXT_T9_RANGE 18 | |
113 | ||
f3889ed1 ND |
114 | /* MXT_TOUCH_MULTI_T9 status */ |
115 | #define MXT_T9_UNGRIP (1 << 0) | |
116 | #define MXT_T9_SUPPRESS (1 << 1) | |
117 | #define MXT_T9_AMP (1 << 2) | |
118 | #define MXT_T9_VECTOR (1 << 3) | |
119 | #define MXT_T9_MOVE (1 << 4) | |
120 | #define MXT_T9_RELEASE (1 << 5) | |
121 | #define MXT_T9_PRESS (1 << 6) | |
122 | #define MXT_T9_DETECT (1 << 7) | |
123 | ||
61dc1aba | 124 | struct t9_range { |
1c0276d5 ND |
125 | __le16 x; |
126 | __le16 y; | |
61dc1aba ND |
127 | } __packed; |
128 | ||
f3889ed1 ND |
129 | /* MXT_TOUCH_MULTI_T9 orient */ |
130 | #define MXT_T9_ORIENT_SWITCH (1 << 0) | |
de601f71 ND |
131 | #define MXT_T9_ORIENT_INVERTX (1 << 1) |
132 | #define MXT_T9_ORIENT_INVERTY (1 << 2) | |
7686b108 | 133 | |
81c88a71 | 134 | /* MXT_SPT_COMMSCONFIG_T18 */ |
7686b108 IV |
135 | #define MXT_COMMS_CTRL 0 |
136 | #define MXT_COMMS_CMD 1 | |
137 | ||
d6a39404 ND |
138 | /* MXT_DEBUG_DIAGNOSTIC_T37 */ |
139 | #define MXT_DIAGNOSTIC_PAGEUP 0x01 | |
140 | #define MXT_DIAGNOSTIC_DELTAS 0x10 | |
06b3d3f3 | 141 | #define MXT_DIAGNOSTIC_REFS 0x11 |
d6a39404 ND |
142 | #define MXT_DIAGNOSTIC_SIZE 128 |
143 | ||
566d533a ND |
144 | #define MXT_FAMILY_1386 160 |
145 | #define MXT1386_COLUMNS 3 | |
146 | #define MXT1386_PAGES_PER_COLUMN 8 | |
147 | ||
d6a39404 ND |
148 | struct t37_debug { |
149 | #ifdef CONFIG_TOUCHSCREEN_ATMEL_MXT_T37 | |
150 | u8 mode; | |
151 | u8 page; | |
152 | u8 data[MXT_DIAGNOSTIC_SIZE]; | |
153 | #endif | |
154 | }; | |
155 | ||
81c88a71 | 156 | /* Define for MXT_GEN_COMMAND_T6 */ |
7686b108 | 157 | #define MXT_BOOT_VALUE 0xa5 |
a4a2ef46 | 158 | #define MXT_RESET_VALUE 0x01 |
7686b108 | 159 | #define MXT_BACKUP_VALUE 0x55 |
a4a2ef46 | 160 | |
b23157dc ND |
161 | /* T100 Multiple Touch Touchscreen */ |
162 | #define MXT_T100_CTRL 0 | |
163 | #define MXT_T100_CFG1 1 | |
164 | #define MXT_T100_TCHAUX 3 | |
2786489f | 165 | #define MXT_T100_XSIZE 9 |
b23157dc | 166 | #define MXT_T100_XRANGE 13 |
2786489f | 167 | #define MXT_T100_YSIZE 20 |
b23157dc ND |
168 | #define MXT_T100_YRANGE 24 |
169 | ||
170 | #define MXT_T100_CFG_SWITCHXY BIT(5) | |
de601f71 ND |
171 | #define MXT_T100_CFG_INVERTY BIT(6) |
172 | #define MXT_T100_CFG_INVERTX BIT(7) | |
b23157dc ND |
173 | |
174 | #define MXT_T100_TCHAUX_VECT BIT(0) | |
175 | #define MXT_T100_TCHAUX_AMPL BIT(1) | |
176 | #define MXT_T100_TCHAUX_AREA BIT(2) | |
177 | ||
178 | #define MXT_T100_DETECT BIT(7) | |
179 | #define MXT_T100_TYPE_MASK 0x70 | |
180 | ||
181 | enum t100_type { | |
182 | MXT_T100_TYPE_FINGER = 1, | |
183 | MXT_T100_TYPE_PASSIVE_STYLUS = 2, | |
184 | MXT_T100_TYPE_HOVERING_FINGER = 4, | |
185 | MXT_T100_TYPE_GLOVE = 5, | |
186 | MXT_T100_TYPE_LARGE_TOUCH = 6, | |
187 | }; | |
188 | ||
189 | #define MXT_DISTANCE_ACTIVE_TOUCH 0 | |
190 | #define MXT_DISTANCE_HOVERING 1 | |
191 | ||
192 | #define MXT_TOUCH_MAJOR_DEFAULT 1 | |
193 | #define MXT_PRESSURE_DEFAULT 1 | |
194 | ||
a4a2ef46 | 195 | /* Delay times */ |
8343bce1 LT |
196 | #define MXT_BACKUP_TIME 50 /* msec */ |
197 | #define MXT_RESET_TIME 200 /* msec */ | |
a4a2ef46 | 198 | #define MXT_RESET_TIMEOUT 3000 /* msec */ |
c3f78043 | 199 | #define MXT_CRC_TIMEOUT 1000 /* msec */ |
a0434b75 BL |
200 | #define MXT_FW_RESET_TIME 3000 /* msec */ |
201 | #define MXT_FW_CHG_TIMEOUT 300 /* msec */ | |
4cf51c38 JS |
202 | |
203 | /* Command to unlock bootloader */ | |
7686b108 IV |
204 | #define MXT_UNLOCK_CMD_MSB 0xaa |
205 | #define MXT_UNLOCK_CMD_LSB 0xdc | |
4cf51c38 JS |
206 | |
207 | /* Bootloader mode status */ | |
7686b108 IV |
208 | #define MXT_WAITING_BOOTLOAD_CMD 0xc0 /* valid 7 6 bit only */ |
209 | #define MXT_WAITING_FRAME_DATA 0x80 /* valid 7 6 bit only */ | |
210 | #define MXT_FRAME_CRC_CHECK 0x02 | |
211 | #define MXT_FRAME_CRC_FAIL 0x03 | |
212 | #define MXT_FRAME_CRC_PASS 0x04 | |
213 | #define MXT_APP_CRC_FAIL 0x40 /* valid 7 8 bit only */ | |
214 | #define MXT_BOOT_STATUS_MASK 0x3f | |
e57a66aa ND |
215 | #define MXT_BOOT_EXTENDED_ID (1 << 5) |
216 | #define MXT_BOOT_ID_MASK 0x1f | |
4cf51c38 | 217 | |
4cf51c38 | 218 | /* Touchscreen absolute values */ |
7686b108 | 219 | #define MXT_MAX_AREA 0xff |
4cf51c38 | 220 | |
22dfab7f DK |
221 | #define MXT_PIXELS_PER_MM 20 |
222 | ||
7686b108 | 223 | struct mxt_info { |
4cf51c38 JS |
224 | u8 family_id; |
225 | u8 variant_id; | |
226 | u8 version; | |
227 | u8 build; | |
228 | u8 matrix_xsize; | |
229 | u8 matrix_ysize; | |
230 | u8 object_num; | |
231 | }; | |
232 | ||
7686b108 | 233 | struct mxt_object { |
4cf51c38 JS |
234 | u8 type; |
235 | u16 start_address; | |
1e0c0c5b DK |
236 | u8 size_minus_one; |
237 | u8 instances_minus_one; | |
4cf51c38 | 238 | u8 num_report_ids; |
333e5a9a | 239 | } __packed; |
4cf51c38 | 240 | |
d6a39404 ND |
241 | struct mxt_dbg { |
242 | u16 t37_address; | |
243 | u16 diag_cmd_address; | |
244 | struct t37_debug *t37_buf; | |
245 | unsigned int t37_pages; | |
246 | unsigned int t37_nodes; | |
ecfdd7e2 ND |
247 | |
248 | struct v4l2_device v4l2; | |
249 | struct v4l2_pix_format format; | |
250 | struct video_device vdev; | |
251 | struct vb2_queue queue; | |
252 | struct mutex lock; | |
253 | int input; | |
254 | }; | |
255 | ||
06b3d3f3 ND |
256 | enum v4l_dbg_inputs { |
257 | MXT_V4L_INPUT_DELTAS, | |
258 | MXT_V4L_INPUT_REFS, | |
259 | MXT_V4L_INPUT_MAX, | |
260 | }; | |
261 | ||
ecfdd7e2 ND |
262 | static const struct v4l2_file_operations mxt_video_fops = { |
263 | .owner = THIS_MODULE, | |
264 | .open = v4l2_fh_open, | |
265 | .release = vb2_fop_release, | |
266 | .unlocked_ioctl = video_ioctl2, | |
267 | .read = vb2_fop_read, | |
268 | .mmap = vb2_fop_mmap, | |
269 | .poll = vb2_fop_poll, | |
d6a39404 ND |
270 | }; |
271 | ||
96a938aa DT |
272 | enum mxt_suspend_mode { |
273 | MXT_SUSPEND_DEEP_SLEEP = 0, | |
274 | MXT_SUSPEND_T9_CTRL = 1, | |
275 | }; | |
276 | ||
4cf51c38 | 277 | /* Each client has this additional data */ |
7686b108 | 278 | struct mxt_data { |
4cf51c38 JS |
279 | struct i2c_client *client; |
280 | struct input_dev *input_dev; | |
ec02ac2b | 281 | char phys[64]; /* device physical location */ |
7686b108 | 282 | struct mxt_object *object_table; |
068bdb67 ND |
283 | struct mxt_info *info; |
284 | void *raw_info_block; | |
4cf51c38 | 285 | unsigned int irq; |
910d8051 JS |
286 | unsigned int max_x; |
287 | unsigned int max_y; | |
de601f71 ND |
288 | bool invertx; |
289 | bool inverty; | |
1c0276d5 | 290 | bool xy_switch; |
2786489f ND |
291 | u8 xsize; |
292 | u8 ysize; | |
d79e7e47 | 293 | bool in_bootloader; |
4ce6fa01 | 294 | u16 mem_size; |
b23157dc ND |
295 | u8 t100_aux_ampl; |
296 | u8 t100_aux_area; | |
297 | u8 t100_aux_vect; | |
9d8dc3e5 | 298 | u8 max_reportid; |
c3f78043 | 299 | u32 config_crc; |
4ce6fa01 | 300 | u32 info_crc; |
f28a842d | 301 | u8 bootloader_addr; |
5f3f9bc2 | 302 | u8 *msg_buf; |
497767d1 | 303 | u8 t6_status; |
b9b05a89 | 304 | bool update_input; |
9d8dc3e5 ND |
305 | u8 last_message_count; |
306 | u8 num_touchids; | |
b23157dc | 307 | u8 multitouch; |
7f3884f7 | 308 | struct t7_config t7_cfg; |
d6a39404 | 309 | struct mxt_dbg dbg; |
f657b00d | 310 | struct gpio_desc *reset_gpio; |
333e5a9a DK |
311 | |
312 | /* Cached parameters from object table */ | |
b9b05a89 | 313 | u16 T5_address; |
5f3f9bc2 | 314 | u8 T5_msg_size; |
fdf80421 | 315 | u8 T6_reportid; |
a4a2ef46 | 316 | u16 T6_address; |
4ce6fa01 | 317 | u16 T7_address; |
333e5a9a DK |
318 | u8 T9_reportid_min; |
319 | u8 T9_reportid_max; | |
22dfab7f | 320 | u8 T19_reportid; |
9d8dc3e5 | 321 | u16 T44_address; |
b23157dc ND |
322 | u8 T100_reportid_min; |
323 | u8 T100_reportid_max; | |
d79e7e47 BL |
324 | |
325 | /* for fw update in bootloader */ | |
326 | struct completion bl_completion; | |
a4a2ef46 IV |
327 | |
328 | /* for reset handling */ | |
329 | struct completion reset_completion; | |
c3f78043 ND |
330 | |
331 | /* for config update handling */ | |
332 | struct completion crc_completion; | |
d80808e1 | 333 | |
96a938aa DT |
334 | u32 *t19_keymap; |
335 | unsigned int t19_num_keys; | |
336 | ||
d80808e1 | 337 | enum mxt_suspend_mode suspend_mode; |
4cf51c38 JS |
338 | }; |
339 | ||
ecfdd7e2 ND |
340 | struct mxt_vb2_buffer { |
341 | struct vb2_buffer vb; | |
342 | struct list_head list; | |
343 | }; | |
344 | ||
1e0c0c5b DK |
345 | static size_t mxt_obj_size(const struct mxt_object *obj) |
346 | { | |
347 | return obj->size_minus_one + 1; | |
348 | } | |
349 | ||
350 | static size_t mxt_obj_instances(const struct mxt_object *obj) | |
351 | { | |
352 | return obj->instances_minus_one + 1; | |
353 | } | |
354 | ||
7686b108 | 355 | static bool mxt_object_readable(unsigned int type) |
4cf51c38 JS |
356 | { |
357 | switch (type) { | |
81c88a71 IV |
358 | case MXT_GEN_COMMAND_T6: |
359 | case MXT_GEN_POWER_T7: | |
360 | case MXT_GEN_ACQUIRE_T8: | |
361 | case MXT_GEN_DATASOURCE_T53: | |
362 | case MXT_TOUCH_MULTI_T9: | |
363 | case MXT_TOUCH_KEYARRAY_T15: | |
364 | case MXT_TOUCH_PROXIMITY_T23: | |
365 | case MXT_TOUCH_PROXKEY_T52: | |
089b50d9 | 366 | case MXT_TOUCH_MULTITOUCHSCREEN_T100: |
81c88a71 IV |
367 | case MXT_PROCI_GRIPFACE_T20: |
368 | case MXT_PROCG_NOISE_T22: | |
369 | case MXT_PROCI_ONETOUCH_T24: | |
370 | case MXT_PROCI_TWOTOUCH_T27: | |
371 | case MXT_PROCI_GRIP_T40: | |
372 | case MXT_PROCI_PALM_T41: | |
373 | case MXT_PROCI_TOUCHSUPPRESSION_T42: | |
374 | case MXT_PROCI_STYLUS_T47: | |
375 | case MXT_PROCG_NOISESUPPRESSION_T48: | |
376 | case MXT_SPT_COMMSCONFIG_T18: | |
377 | case MXT_SPT_GPIOPWM_T19: | |
378 | case MXT_SPT_SELFTEST_T25: | |
379 | case MXT_SPT_CTECONFIG_T28: | |
380 | case MXT_SPT_USERDATA_T38: | |
381 | case MXT_SPT_DIGITIZER_T43: | |
382 | case MXT_SPT_CTECONFIG_T46: | |
4cf51c38 JS |
383 | return true; |
384 | default: | |
385 | return false; | |
386 | } | |
387 | } | |
388 | ||
5f3f9bc2 | 389 | static void mxt_dump_message(struct mxt_data *data, u8 *message) |
4cf51c38 | 390 | { |
5f3f9bc2 ND |
391 | dev_dbg(&data->client->dev, "message: %*ph\n", |
392 | data->T5_msg_size, message); | |
4cf51c38 JS |
393 | } |
394 | ||
a4a2ef46 IV |
395 | static int mxt_wait_for_completion(struct mxt_data *data, |
396 | struct completion *comp, | |
397 | unsigned int timeout_ms) | |
d79e7e47 BL |
398 | { |
399 | struct device *dev = &data->client->dev; | |
d79e7e47 BL |
400 | unsigned long timeout = msecs_to_jiffies(timeout_ms); |
401 | long ret; | |
402 | ||
403 | ret = wait_for_completion_interruptible_timeout(comp, timeout); | |
404 | if (ret < 0) { | |
405 | return ret; | |
406 | } else if (ret == 0) { | |
407 | dev_err(dev, "Wait for completion timed out.\n"); | |
408 | return -ETIMEDOUT; | |
409 | } | |
410 | return 0; | |
411 | } | |
412 | ||
f28a842d ND |
413 | static int mxt_bootloader_read(struct mxt_data *data, |
414 | u8 *val, unsigned int count) | |
415 | { | |
416 | int ret; | |
417 | struct i2c_msg msg; | |
418 | ||
419 | msg.addr = data->bootloader_addr; | |
420 | msg.flags = data->client->flags & I2C_M_TEN; | |
421 | msg.flags |= I2C_M_RD; | |
422 | msg.len = count; | |
423 | msg.buf = val; | |
424 | ||
425 | ret = i2c_transfer(data->client->adapter, &msg, 1); | |
f28a842d ND |
426 | if (ret == 1) { |
427 | ret = 0; | |
428 | } else { | |
429 | ret = ret < 0 ? ret : -EIO; | |
430 | dev_err(&data->client->dev, "%s: i2c recv failed (%d)\n", | |
431 | __func__, ret); | |
432 | } | |
433 | ||
434 | return ret; | |
435 | } | |
436 | ||
437 | static int mxt_bootloader_write(struct mxt_data *data, | |
438 | const u8 * const val, unsigned int count) | |
439 | { | |
440 | int ret; | |
441 | struct i2c_msg msg; | |
442 | ||
443 | msg.addr = data->bootloader_addr; | |
444 | msg.flags = data->client->flags & I2C_M_TEN; | |
445 | msg.len = count; | |
446 | msg.buf = (u8 *)val; | |
447 | ||
448 | ret = i2c_transfer(data->client->adapter, &msg, 1); | |
449 | if (ret == 1) { | |
450 | ret = 0; | |
451 | } else { | |
452 | ret = ret < 0 ? ret : -EIO; | |
453 | dev_err(&data->client->dev, "%s: i2c send failed (%d)\n", | |
454 | __func__, ret); | |
455 | } | |
456 | ||
457 | return ret; | |
458 | } | |
459 | ||
8efaa5e5 | 460 | static int mxt_lookup_bootloader_address(struct mxt_data *data, bool retry) |
f28a842d ND |
461 | { |
462 | u8 appmode = data->client->addr; | |
463 | u8 bootloader; | |
068bdb67 | 464 | u8 family_id = data->info ? data->info->family_id : 0; |
f28a842d ND |
465 | |
466 | switch (appmode) { | |
467 | case 0x4a: | |
468 | case 0x4b: | |
44a0bab2 | 469 | /* Chips after 1664S use different scheme */ |
068bdb67 | 470 | if (retry || family_id >= 0xa2) { |
44a0bab2 ND |
471 | bootloader = appmode - 0x24; |
472 | break; | |
473 | } | |
474 | /* Fall through for normal case */ | |
f28a842d ND |
475 | case 0x4c: |
476 | case 0x4d: | |
477 | case 0x5a: | |
478 | case 0x5b: | |
479 | bootloader = appmode - 0x26; | |
480 | break; | |
6cd1ab0f | 481 | |
f28a842d ND |
482 | default: |
483 | dev_err(&data->client->dev, | |
484 | "Appmode i2c address 0x%02x not found\n", | |
485 | appmode); | |
486 | return -EINVAL; | |
487 | } | |
488 | ||
489 | data->bootloader_addr = bootloader; | |
490 | return 0; | |
491 | } | |
492 | ||
6cd1ab0f | 493 | static int mxt_probe_bootloader(struct mxt_data *data, bool alt_address) |
a9fdd1e6 ND |
494 | { |
495 | struct device *dev = &data->client->dev; | |
6cd1ab0f | 496 | int error; |
a9fdd1e6 ND |
497 | u8 val; |
498 | bool crc_failure; | |
499 | ||
6cd1ab0f DT |
500 | error = mxt_lookup_bootloader_address(data, alt_address); |
501 | if (error) | |
502 | return error; | |
a9fdd1e6 | 503 | |
6cd1ab0f DT |
504 | error = mxt_bootloader_read(data, &val, 1); |
505 | if (error) | |
506 | return error; | |
a9fdd1e6 ND |
507 | |
508 | /* Check app crc fail mode */ | |
509 | crc_failure = (val & ~MXT_BOOT_STATUS_MASK) == MXT_APP_CRC_FAIL; | |
510 | ||
511 | dev_err(dev, "Detected bootloader, status:%02X%s\n", | |
512 | val, crc_failure ? ", APP_CRC_FAIL" : ""); | |
513 | ||
514 | return 0; | |
515 | } | |
516 | ||
e57a66aa ND |
517 | static u8 mxt_get_bootloader_version(struct mxt_data *data, u8 val) |
518 | { | |
519 | struct device *dev = &data->client->dev; | |
520 | u8 buf[3]; | |
521 | ||
522 | if (val & MXT_BOOT_EXTENDED_ID) { | |
523 | if (mxt_bootloader_read(data, &buf[0], 3) != 0) { | |
524 | dev_err(dev, "%s: i2c failure\n", __func__); | |
68807a0c | 525 | return val; |
e57a66aa ND |
526 | } |
527 | ||
528 | dev_dbg(dev, "Bootloader ID:%d Version:%d\n", buf[1], buf[2]); | |
529 | ||
530 | return buf[0]; | |
531 | } else { | |
532 | dev_dbg(dev, "Bootloader ID:%d\n", val & MXT_BOOT_ID_MASK); | |
533 | ||
534 | return val; | |
535 | } | |
536 | } | |
537 | ||
385deb96 ND |
538 | static int mxt_check_bootloader(struct mxt_data *data, unsigned int state, |
539 | bool wait) | |
4cf51c38 | 540 | { |
f28a842d | 541 | struct device *dev = &data->client->dev; |
4cf51c38 | 542 | u8 val; |
d79e7e47 | 543 | int ret; |
4cf51c38 JS |
544 | |
545 | recheck: | |
385deb96 | 546 | if (wait) { |
d79e7e47 BL |
547 | /* |
548 | * In application update mode, the interrupt | |
549 | * line signals state transitions. We must wait for the | |
550 | * CHG assertion before reading the status byte. | |
551 | * Once the status byte has been read, the line is deasserted. | |
552 | */ | |
a4a2ef46 IV |
553 | ret = mxt_wait_for_completion(data, &data->bl_completion, |
554 | MXT_FW_CHG_TIMEOUT); | |
d79e7e47 BL |
555 | if (ret) { |
556 | /* | |
557 | * TODO: handle -ERESTARTSYS better by terminating | |
558 | * fw update process before returning to userspace | |
559 | * by writing length 0x000 to device (iff we are in | |
560 | * WAITING_FRAME_DATA state). | |
561 | */ | |
f28a842d | 562 | dev_err(dev, "Update wait error %d\n", ret); |
d79e7e47 BL |
563 | return ret; |
564 | } | |
565 | } | |
566 | ||
f28a842d ND |
567 | ret = mxt_bootloader_read(data, &val, 1); |
568 | if (ret) | |
569 | return ret; | |
4cf51c38 | 570 | |
e57a66aa ND |
571 | if (state == MXT_WAITING_BOOTLOAD_CMD) |
572 | val = mxt_get_bootloader_version(data, val); | |
573 | ||
4cf51c38 | 574 | switch (state) { |
7686b108 IV |
575 | case MXT_WAITING_BOOTLOAD_CMD: |
576 | case MXT_WAITING_FRAME_DATA: | |
a9fdd1e6 | 577 | case MXT_APP_CRC_FAIL: |
7686b108 | 578 | val &= ~MXT_BOOT_STATUS_MASK; |
4cf51c38 | 579 | break; |
7686b108 | 580 | case MXT_FRAME_CRC_PASS: |
f943c74a | 581 | if (val == MXT_FRAME_CRC_CHECK) { |
4cf51c38 | 582 | goto recheck; |
f943c74a ND |
583 | } else if (val == MXT_FRAME_CRC_FAIL) { |
584 | dev_err(dev, "Bootloader CRC fail\n"); | |
585 | return -EINVAL; | |
586 | } | |
4cf51c38 JS |
587 | break; |
588 | default: | |
589 | return -EINVAL; | |
590 | } | |
591 | ||
592 | if (val != state) { | |
f28a842d | 593 | dev_err(dev, "Invalid bootloader state %02X != %02X\n", |
7bed6805 | 594 | val, state); |
4cf51c38 JS |
595 | return -EINVAL; |
596 | } | |
597 | ||
598 | return 0; | |
599 | } | |
600 | ||
8efaa5e5 | 601 | static int mxt_send_bootloader_cmd(struct mxt_data *data, bool unlock) |
4cf51c38 | 602 | { |
f28a842d | 603 | int ret; |
4cf51c38 JS |
604 | u8 buf[2]; |
605 | ||
8efaa5e5 ND |
606 | if (unlock) { |
607 | buf[0] = MXT_UNLOCK_CMD_LSB; | |
608 | buf[1] = MXT_UNLOCK_CMD_MSB; | |
609 | } else { | |
610 | buf[0] = 0x01; | |
611 | buf[1] = 0x01; | |
612 | } | |
4cf51c38 | 613 | |
f28a842d ND |
614 | ret = mxt_bootloader_write(data, buf, 2); |
615 | if (ret) | |
616 | return ret; | |
4cf51c38 JS |
617 | |
618 | return 0; | |
619 | } | |
620 | ||
7686b108 | 621 | static int __mxt_read_reg(struct i2c_client *client, |
4cf51c38 JS |
622 | u16 reg, u16 len, void *val) |
623 | { | |
624 | struct i2c_msg xfer[2]; | |
625 | u8 buf[2]; | |
771733e3 | 626 | int ret; |
4cf51c38 JS |
627 | |
628 | buf[0] = reg & 0xff; | |
629 | buf[1] = (reg >> 8) & 0xff; | |
630 | ||
631 | /* Write register */ | |
632 | xfer[0].addr = client->addr; | |
633 | xfer[0].flags = 0; | |
634 | xfer[0].len = 2; | |
635 | xfer[0].buf = buf; | |
636 | ||
637 | /* Read data */ | |
638 | xfer[1].addr = client->addr; | |
639 | xfer[1].flags = I2C_M_RD; | |
640 | xfer[1].len = len; | |
641 | xfer[1].buf = val; | |
642 | ||
771733e3 DK |
643 | ret = i2c_transfer(client->adapter, xfer, 2); |
644 | if (ret == 2) { | |
645 | ret = 0; | |
646 | } else { | |
647 | if (ret >= 0) | |
648 | ret = -EIO; | |
649 | dev_err(&client->dev, "%s: i2c transfer failed (%d)\n", | |
650 | __func__, ret); | |
4cf51c38 JS |
651 | } |
652 | ||
771733e3 | 653 | return ret; |
4cf51c38 JS |
654 | } |
655 | ||
9638ab7c DK |
656 | static int __mxt_write_reg(struct i2c_client *client, u16 reg, u16 len, |
657 | const void *val) | |
4cf51c38 | 658 | { |
9638ab7c DK |
659 | u8 *buf; |
660 | size_t count; | |
771733e3 | 661 | int ret; |
4cf51c38 | 662 | |
9638ab7c DK |
663 | count = len + 2; |
664 | buf = kmalloc(count, GFP_KERNEL); | |
665 | if (!buf) | |
666 | return -ENOMEM; | |
4cf51c38 JS |
667 | |
668 | buf[0] = reg & 0xff; | |
669 | buf[1] = (reg >> 8) & 0xff; | |
9638ab7c | 670 | memcpy(&buf[2], val, len); |
4cf51c38 | 671 | |
9638ab7c DK |
672 | ret = i2c_master_send(client, buf, count); |
673 | if (ret == count) { | |
771733e3 DK |
674 | ret = 0; |
675 | } else { | |
676 | if (ret >= 0) | |
677 | ret = -EIO; | |
678 | dev_err(&client->dev, "%s: i2c send failed (%d)\n", | |
679 | __func__, ret); | |
4cf51c38 JS |
680 | } |
681 | ||
9638ab7c | 682 | kfree(buf); |
771733e3 | 683 | return ret; |
4cf51c38 JS |
684 | } |
685 | ||
9638ab7c | 686 | static int mxt_write_reg(struct i2c_client *client, u16 reg, u8 val) |
4cf51c38 | 687 | { |
9638ab7c | 688 | return __mxt_write_reg(client, reg, 1, &val); |
4cf51c38 JS |
689 | } |
690 | ||
7686b108 IV |
691 | static struct mxt_object * |
692 | mxt_get_object(struct mxt_data *data, u8 type) | |
4cf51c38 | 693 | { |
7686b108 | 694 | struct mxt_object *object; |
4cf51c38 JS |
695 | int i; |
696 | ||
068bdb67 | 697 | for (i = 0; i < data->info->object_num; i++) { |
4cf51c38 JS |
698 | object = data->object_table + i; |
699 | if (object->type == type) | |
700 | return object; | |
701 | } | |
702 | ||
50a77c65 | 703 | dev_warn(&data->client->dev, "Invalid object type T%u\n", type); |
4cf51c38 JS |
704 | return NULL; |
705 | } | |
706 | ||
497767d1 ND |
707 | static void mxt_proc_t6_messages(struct mxt_data *data, u8 *msg) |
708 | { | |
709 | struct device *dev = &data->client->dev; | |
710 | u8 status = msg[1]; | |
711 | u32 crc = msg[2] | (msg[3] << 8) | (msg[4] << 16); | |
712 | ||
713 | complete(&data->crc_completion); | |
714 | ||
715 | if (crc != data->config_crc) { | |
716 | data->config_crc = crc; | |
717 | dev_dbg(dev, "T6 Config Checksum: 0x%06X\n", crc); | |
718 | } | |
719 | ||
720 | /* Detect reset */ | |
721 | if (status & MXT_T6_STATUS_RESET) | |
722 | complete(&data->reset_completion); | |
723 | ||
724 | /* Output debug if status has changed */ | |
725 | if (status != data->t6_status) | |
726 | dev_dbg(dev, "T6 Status 0x%02X%s%s%s%s%s%s%s\n", | |
727 | status, | |
728 | status == 0 ? " OK" : "", | |
729 | status & MXT_T6_STATUS_RESET ? " RESET" : "", | |
730 | status & MXT_T6_STATUS_OFL ? " OFL" : "", | |
731 | status & MXT_T6_STATUS_SIGERR ? " SIGERR" : "", | |
732 | status & MXT_T6_STATUS_CAL ? " CAL" : "", | |
733 | status & MXT_T6_STATUS_CFGERR ? " CFGERR" : "", | |
734 | status & MXT_T6_STATUS_COMSERR ? " COMSERR" : ""); | |
735 | ||
736 | /* Save current status */ | |
737 | data->t6_status = status; | |
738 | } | |
739 | ||
7f405483 LT |
740 | static int mxt_write_object(struct mxt_data *data, |
741 | u8 type, u8 offset, u8 val) | |
742 | { | |
743 | struct mxt_object *object; | |
744 | u16 reg; | |
745 | ||
746 | object = mxt_get_object(data, type); | |
747 | if (!object || offset >= mxt_obj_size(object)) | |
748 | return -EINVAL; | |
749 | ||
750 | reg = object->start_address; | |
751 | return mxt_write_reg(data->client, reg + offset, val); | |
752 | } | |
753 | ||
5f3f9bc2 | 754 | static void mxt_input_button(struct mxt_data *data, u8 *message) |
22dfab7f DK |
755 | { |
756 | struct input_dev *input = data->input_dev; | |
22dfab7f DK |
757 | int i; |
758 | ||
96a938aa DT |
759 | for (i = 0; i < data->t19_num_keys; i++) { |
760 | if (data->t19_keymap[i] == KEY_RESERVED) | |
22dfab7f | 761 | continue; |
c37f6d38 DT |
762 | |
763 | /* Active-low switch */ | |
96a938aa | 764 | input_report_key(input, data->t19_keymap[i], |
c37f6d38 | 765 | !(message[1] & BIT(i))); |
22dfab7f DK |
766 | } |
767 | } | |
768 | ||
b735fbe0 | 769 | static void mxt_input_sync(struct mxt_data *data) |
eef820dc | 770 | { |
b735fbe0 | 771 | input_mt_report_pointer_emulation(data->input_dev, |
96a938aa | 772 | data->t19_num_keys); |
b735fbe0 | 773 | input_sync(data->input_dev); |
eef820dc ND |
774 | } |
775 | ||
b9b05a89 | 776 | static void mxt_proc_t9_message(struct mxt_data *data, u8 *message) |
4cf51c38 | 777 | { |
4cf51c38 | 778 | struct device *dev = &data->client->dev; |
fba5bc31 | 779 | struct input_dev *input_dev = data->input_dev; |
5f3f9bc2 ND |
780 | int id; |
781 | u8 status; | |
4cf51c38 JS |
782 | int x; |
783 | int y; | |
784 | int area; | |
fea9e467 | 785 | int amplitude; |
4cf51c38 | 786 | |
5f3f9bc2 ND |
787 | id = message[0] - data->T9_reportid_min; |
788 | status = message[1]; | |
789 | x = (message[2] << 4) | ((message[4] >> 4) & 0xf); | |
790 | y = (message[3] << 4) | ((message[4] & 0xf)); | |
eef820dc ND |
791 | |
792 | /* Handle 10/12 bit switching */ | |
910d8051 | 793 | if (data->max_x < 1024) |
eef820dc | 794 | x >>= 2; |
910d8051 | 795 | if (data->max_y < 1024) |
eef820dc | 796 | y >>= 2; |
910d8051 | 797 | |
5f3f9bc2 ND |
798 | area = message[5]; |
799 | amplitude = message[6]; | |
4cf51c38 | 800 | |
b2e459b8 DK |
801 | dev_dbg(dev, |
802 | "[%u] %c%c%c%c%c%c%c%c x: %5u y: %5u area: %3u amp: %3u\n", | |
803 | id, | |
f3889ed1 ND |
804 | (status & MXT_T9_DETECT) ? 'D' : '.', |
805 | (status & MXT_T9_PRESS) ? 'P' : '.', | |
806 | (status & MXT_T9_RELEASE) ? 'R' : '.', | |
807 | (status & MXT_T9_MOVE) ? 'M' : '.', | |
808 | (status & MXT_T9_VECTOR) ? 'V' : '.', | |
809 | (status & MXT_T9_AMP) ? 'A' : '.', | |
810 | (status & MXT_T9_SUPPRESS) ? 'S' : '.', | |
811 | (status & MXT_T9_UNGRIP) ? 'U' : '.', | |
fea9e467 | 812 | x, y, area, amplitude); |
b2e459b8 | 813 | |
fba5bc31 | 814 | input_mt_slot(input_dev, id); |
fba5bc31 | 815 | |
f3889ed1 | 816 | if (status & MXT_T9_DETECT) { |
eef820dc ND |
817 | /* |
818 | * Multiple bits may be set if the host is slow to read | |
819 | * the status messages, indicating all the events that | |
820 | * have happened. | |
821 | */ | |
822 | if (status & MXT_T9_RELEASE) { | |
823 | input_mt_report_slot_state(input_dev, | |
824 | MT_TOOL_FINGER, 0); | |
b735fbe0 | 825 | mxt_input_sync(data); |
eef820dc ND |
826 | } |
827 | ||
828 | /* Touch active */ | |
829 | input_mt_report_slot_state(input_dev, MT_TOOL_FINGER, 1); | |
fba5bc31 DK |
830 | input_report_abs(input_dev, ABS_MT_POSITION_X, x); |
831 | input_report_abs(input_dev, ABS_MT_POSITION_Y, y); | |
fea9e467 | 832 | input_report_abs(input_dev, ABS_MT_PRESSURE, amplitude); |
fba5bc31 | 833 | input_report_abs(input_dev, ABS_MT_TOUCH_MAJOR, area); |
eef820dc ND |
834 | } else { |
835 | /* Touch no longer active, close out slot */ | |
836 | input_mt_report_slot_state(input_dev, MT_TOOL_FINGER, 0); | |
fba5bc31 | 837 | } |
b9b05a89 ND |
838 | |
839 | data->update_input = true; | |
4cf51c38 | 840 | } |
4cf51c38 | 841 | |
b23157dc ND |
842 | static void mxt_proc_t100_message(struct mxt_data *data, u8 *message) |
843 | { | |
844 | struct device *dev = &data->client->dev; | |
845 | struct input_dev *input_dev = data->input_dev; | |
846 | int id; | |
847 | u8 status; | |
848 | u8 type = 0; | |
849 | u16 x; | |
850 | u16 y; | |
851 | int distance = 0; | |
852 | int tool = 0; | |
853 | u8 major = 0; | |
854 | u8 pressure = 0; | |
855 | u8 orientation = 0; | |
856 | ||
857 | id = message[0] - data->T100_reportid_min - 2; | |
858 | ||
859 | /* ignore SCRSTATUS events */ | |
860 | if (id < 0) | |
861 | return; | |
862 | ||
863 | status = message[1]; | |
864 | x = get_unaligned_le16(&message[2]); | |
865 | y = get_unaligned_le16(&message[4]); | |
866 | ||
867 | if (status & MXT_T100_DETECT) { | |
868 | type = (status & MXT_T100_TYPE_MASK) >> 4; | |
869 | ||
870 | switch (type) { | |
871 | case MXT_T100_TYPE_HOVERING_FINGER: | |
872 | tool = MT_TOOL_FINGER; | |
873 | distance = MXT_DISTANCE_HOVERING; | |
874 | ||
875 | if (data->t100_aux_vect) | |
876 | orientation = message[data->t100_aux_vect]; | |
877 | ||
878 | break; | |
879 | ||
880 | case MXT_T100_TYPE_FINGER: | |
881 | case MXT_T100_TYPE_GLOVE: | |
882 | tool = MT_TOOL_FINGER; | |
883 | distance = MXT_DISTANCE_ACTIVE_TOUCH; | |
884 | ||
885 | if (data->t100_aux_area) | |
886 | major = message[data->t100_aux_area]; | |
887 | ||
888 | if (data->t100_aux_ampl) | |
889 | pressure = message[data->t100_aux_ampl]; | |
890 | ||
891 | if (data->t100_aux_vect) | |
892 | orientation = message[data->t100_aux_vect]; | |
893 | ||
894 | break; | |
895 | ||
896 | case MXT_T100_TYPE_PASSIVE_STYLUS: | |
897 | tool = MT_TOOL_PEN; | |
898 | ||
899 | /* | |
900 | * Passive stylus is reported with size zero so | |
901 | * hardcode. | |
902 | */ | |
903 | major = MXT_TOUCH_MAJOR_DEFAULT; | |
904 | ||
905 | if (data->t100_aux_ampl) | |
906 | pressure = message[data->t100_aux_ampl]; | |
907 | ||
908 | break; | |
909 | ||
910 | case MXT_T100_TYPE_LARGE_TOUCH: | |
911 | /* Ignore suppressed touch */ | |
912 | break; | |
913 | ||
914 | default: | |
915 | dev_dbg(dev, "Unexpected T100 type\n"); | |
916 | return; | |
917 | } | |
918 | } | |
919 | ||
920 | /* | |
921 | * Values reported should be non-zero if tool is touching the | |
922 | * device | |
923 | */ | |
924 | if (!pressure && type != MXT_T100_TYPE_HOVERING_FINGER) | |
925 | pressure = MXT_PRESSURE_DEFAULT; | |
926 | ||
927 | input_mt_slot(input_dev, id); | |
928 | ||
929 | if (status & MXT_T100_DETECT) { | |
930 | dev_dbg(dev, "[%u] type:%u x:%u y:%u a:%02X p:%02X v:%02X\n", | |
931 | id, type, x, y, major, pressure, orientation); | |
932 | ||
933 | input_mt_report_slot_state(input_dev, tool, 1); | |
934 | input_report_abs(input_dev, ABS_MT_POSITION_X, x); | |
935 | input_report_abs(input_dev, ABS_MT_POSITION_Y, y); | |
936 | input_report_abs(input_dev, ABS_MT_TOUCH_MAJOR, major); | |
937 | input_report_abs(input_dev, ABS_MT_PRESSURE, pressure); | |
938 | input_report_abs(input_dev, ABS_MT_DISTANCE, distance); | |
939 | input_report_abs(input_dev, ABS_MT_ORIENTATION, orientation); | |
940 | } else { | |
941 | dev_dbg(dev, "[%u] release\n", id); | |
942 | ||
943 | /* close out slot */ | |
944 | input_mt_report_slot_state(input_dev, 0, 0); | |
945 | } | |
946 | ||
947 | data->update_input = true; | |
948 | } | |
949 | ||
b9b05a89 | 950 | static int mxt_proc_message(struct mxt_data *data, u8 *message) |
04a79181 | 951 | { |
b9b05a89 ND |
952 | u8 report_id = message[0]; |
953 | ||
954 | if (report_id == MXT_RPTID_NOMSG) | |
955 | return 0; | |
956 | ||
957 | if (report_id == data->T6_reportid) { | |
958 | mxt_proc_t6_messages(data, message); | |
959 | } else if (!data->input_dev) { | |
960 | /* | |
961 | * Do not report events if input device | |
962 | * is not yet registered. | |
963 | */ | |
964 | mxt_dump_message(data, message); | |
b23157dc ND |
965 | } else if (report_id >= data->T9_reportid_min && |
966 | report_id <= data->T9_reportid_max) { | |
b9b05a89 | 967 | mxt_proc_t9_message(data, message); |
b23157dc ND |
968 | } else if (report_id >= data->T100_reportid_min && |
969 | report_id <= data->T100_reportid_max) { | |
970 | mxt_proc_t100_message(data, message); | |
b9b05a89 ND |
971 | } else if (report_id == data->T19_reportid) { |
972 | mxt_input_button(data, message); | |
973 | data->update_input = true; | |
974 | } else { | |
975 | mxt_dump_message(data, message); | |
976 | } | |
977 | ||
978 | return 1; | |
4cf51c38 JS |
979 | } |
980 | ||
9d8dc3e5 | 981 | static int mxt_read_and_process_messages(struct mxt_data *data, u8 count) |
4cf51c38 | 982 | { |
4cf51c38 | 983 | struct device *dev = &data->client->dev; |
b9b05a89 | 984 | int ret; |
9d8dc3e5 ND |
985 | int i; |
986 | u8 num_valid = 0; | |
987 | ||
988 | /* Safety check for msg_buf */ | |
989 | if (count > data->max_reportid) | |
990 | return -EINVAL; | |
4cf51c38 | 991 | |
9d8dc3e5 | 992 | /* Process remaining messages if necessary */ |
b9b05a89 | 993 | ret = __mxt_read_reg(data->client, data->T5_address, |
9d8dc3e5 | 994 | data->T5_msg_size * count, data->msg_buf); |
b9b05a89 | 995 | if (ret) { |
9d8dc3e5 | 996 | dev_err(dev, "Failed to read %u messages (%d)\n", count, ret); |
b9b05a89 ND |
997 | return ret; |
998 | } | |
4cf51c38 | 999 | |
9d8dc3e5 ND |
1000 | for (i = 0; i < count; i++) { |
1001 | ret = mxt_proc_message(data, | |
1002 | data->msg_buf + data->T5_msg_size * i); | |
1003 | ||
1004 | if (ret == 1) | |
1005 | num_valid++; | |
1006 | } | |
1007 | ||
1008 | /* return number of messages read */ | |
1009 | return num_valid; | |
b9b05a89 | 1010 | } |
4cf51c38 | 1011 | |
9d8dc3e5 | 1012 | static irqreturn_t mxt_process_messages_t44(struct mxt_data *data) |
b9b05a89 | 1013 | { |
9d8dc3e5 | 1014 | struct device *dev = &data->client->dev; |
b9b05a89 | 1015 | int ret; |
9d8dc3e5 | 1016 | u8 count, num_left; |
4cf51c38 | 1017 | |
9d8dc3e5 ND |
1018 | /* Read T44 and T5 together */ |
1019 | ret = __mxt_read_reg(data->client, data->T44_address, | |
1020 | data->T5_msg_size + 1, data->msg_buf); | |
1021 | if (ret) { | |
1022 | dev_err(dev, "Failed to read T44 and T5 (%d)\n", ret); | |
1023 | return IRQ_NONE; | |
1024 | } | |
1025 | ||
1026 | count = data->msg_buf[0]; | |
1027 | ||
507584e2 ND |
1028 | /* |
1029 | * This condition may be caused by the CHG line being configured in | |
1030 | * Mode 0. It results in unnecessary I2C operations but it is benign. | |
1031 | */ | |
1032 | if (count == 0) | |
9d8dc3e5 | 1033 | return IRQ_NONE; |
507584e2 ND |
1034 | |
1035 | if (count > data->max_reportid) { | |
1036 | dev_warn(dev, "T44 count %d exceeded max report id\n", count); | |
9d8dc3e5 ND |
1037 | count = data->max_reportid; |
1038 | } | |
1039 | ||
1040 | /* Process first message */ | |
1041 | ret = mxt_proc_message(data, data->msg_buf + 1); | |
1042 | if (ret < 0) { | |
1043 | dev_warn(dev, "Unexpected invalid message\n"); | |
1044 | return IRQ_NONE; | |
1045 | } | |
1046 | ||
1047 | num_left = count - 1; | |
1048 | ||
1049 | /* Process remaining messages if necessary */ | |
1050 | if (num_left) { | |
1051 | ret = mxt_read_and_process_messages(data, num_left); | |
b9b05a89 | 1052 | if (ret < 0) |
9d8dc3e5 ND |
1053 | goto end; |
1054 | else if (ret != num_left) | |
1055 | dev_warn(dev, "Unexpected invalid message\n"); | |
1056 | } | |
1057 | ||
1058 | end: | |
1059 | if (data->update_input) { | |
1060 | mxt_input_sync(data); | |
1061 | data->update_input = false; | |
1062 | } | |
1063 | ||
1064 | return IRQ_HANDLED; | |
1065 | } | |
1066 | ||
1067 | static int mxt_process_messages_until_invalid(struct mxt_data *data) | |
1068 | { | |
1069 | struct device *dev = &data->client->dev; | |
1070 | int count, read; | |
1071 | u8 tries = 2; | |
1072 | ||
1073 | count = data->max_reportid; | |
1074 | ||
1075 | /* Read messages until we force an invalid */ | |
1076 | do { | |
1077 | read = mxt_read_and_process_messages(data, count); | |
1078 | if (read < count) | |
1079 | return 0; | |
1080 | } while (--tries); | |
1081 | ||
1082 | if (data->update_input) { | |
1083 | mxt_input_sync(data); | |
1084 | data->update_input = false; | |
1085 | } | |
1086 | ||
1087 | dev_err(dev, "CHG pin isn't cleared\n"); | |
1088 | return -EBUSY; | |
1089 | } | |
1090 | ||
1091 | static irqreturn_t mxt_process_messages(struct mxt_data *data) | |
1092 | { | |
1093 | int total_handled, num_handled; | |
1094 | u8 count = data->last_message_count; | |
1095 | ||
1096 | if (count < 1 || count > data->max_reportid) | |
1097 | count = 1; | |
1098 | ||
1099 | /* include final invalid message */ | |
1100 | total_handled = mxt_read_and_process_messages(data, count + 1); | |
1101 | if (total_handled < 0) | |
1102 | return IRQ_NONE; | |
1103 | /* if there were invalid messages, then we are done */ | |
1104 | else if (total_handled <= count) | |
1105 | goto update_count; | |
1106 | ||
1107 | /* keep reading two msgs until one is invalid or reportid limit */ | |
1108 | do { | |
1109 | num_handled = mxt_read_and_process_messages(data, 2); | |
1110 | if (num_handled < 0) | |
b9b05a89 | 1111 | return IRQ_NONE; |
9d8dc3e5 ND |
1112 | |
1113 | total_handled += num_handled; | |
1114 | ||
1115 | if (num_handled < 2) | |
1116 | break; | |
1117 | } while (total_handled < data->num_touchids); | |
1118 | ||
1119 | update_count: | |
1120 | data->last_message_count = total_handled; | |
b9b05a89 ND |
1121 | |
1122 | if (data->update_input) { | |
b735fbe0 | 1123 | mxt_input_sync(data); |
b9b05a89 ND |
1124 | data->update_input = false; |
1125 | } | |
64464ae8 | 1126 | |
4cf51c38 JS |
1127 | return IRQ_HANDLED; |
1128 | } | |
1129 | ||
d79e7e47 BL |
1130 | static irqreturn_t mxt_interrupt(int irq, void *dev_id) |
1131 | { | |
1132 | struct mxt_data *data = dev_id; | |
1133 | ||
1134 | if (data->in_bootloader) { | |
1135 | /* bootloader state transition completion */ | |
1136 | complete(&data->bl_completion); | |
1137 | return IRQ_HANDLED; | |
1138 | } | |
1139 | ||
dd24dcf5 ND |
1140 | if (!data->object_table) |
1141 | return IRQ_HANDLED; | |
1142 | ||
9d8dc3e5 ND |
1143 | if (data->T44_address) { |
1144 | return mxt_process_messages_t44(data); | |
1145 | } else { | |
1146 | return mxt_process_messages(data); | |
1147 | } | |
d79e7e47 BL |
1148 | } |
1149 | ||
a4a2ef46 IV |
1150 | static int mxt_t6_command(struct mxt_data *data, u16 cmd_offset, |
1151 | u8 value, bool wait) | |
1152 | { | |
1153 | u16 reg; | |
1154 | u8 command_register; | |
1155 | int timeout_counter = 0; | |
1156 | int ret; | |
1157 | ||
1158 | reg = data->T6_address + cmd_offset; | |
1159 | ||
1160 | ret = mxt_write_reg(data->client, reg, value); | |
1161 | if (ret) | |
1162 | return ret; | |
1163 | ||
1164 | if (!wait) | |
1165 | return 0; | |
1166 | ||
1167 | do { | |
1168 | msleep(20); | |
1169 | ret = __mxt_read_reg(data->client, reg, 1, &command_register); | |
1170 | if (ret) | |
1171 | return ret; | |
1172 | } while (command_register != 0 && timeout_counter++ <= 100); | |
1173 | ||
1174 | if (timeout_counter > 100) { | |
1175 | dev_err(&data->client->dev, "Command failed!\n"); | |
1176 | return -EIO; | |
1177 | } | |
1178 | ||
1179 | return 0; | |
1180 | } | |
1181 | ||
eb43335c ND |
1182 | static int mxt_acquire_irq(struct mxt_data *data) |
1183 | { | |
1184 | int error; | |
1185 | ||
1186 | enable_irq(data->irq); | |
1187 | ||
1188 | error = mxt_process_messages_until_invalid(data); | |
1189 | if (error) | |
1190 | return error; | |
1191 | ||
1192 | return 0; | |
1193 | } | |
1194 | ||
a4a2ef46 IV |
1195 | static int mxt_soft_reset(struct mxt_data *data) |
1196 | { | |
1197 | struct device *dev = &data->client->dev; | |
1198 | int ret = 0; | |
1199 | ||
885f3fb9 ND |
1200 | dev_info(dev, "Resetting device\n"); |
1201 | ||
1202 | disable_irq(data->irq); | |
a4a2ef46 IV |
1203 | |
1204 | reinit_completion(&data->reset_completion); | |
1205 | ||
1206 | ret = mxt_t6_command(data, MXT_COMMAND_RESET, MXT_RESET_VALUE, false); | |
1207 | if (ret) | |
1208 | return ret; | |
1209 | ||
885f3fb9 ND |
1210 | /* Ignore CHG line for 100ms after reset */ |
1211 | msleep(100); | |
1212 | ||
eb43335c | 1213 | mxt_acquire_irq(data); |
885f3fb9 | 1214 | |
a4a2ef46 IV |
1215 | ret = mxt_wait_for_completion(data, &data->reset_completion, |
1216 | MXT_RESET_TIMEOUT); | |
1217 | if (ret) | |
1218 | return ret; | |
1219 | ||
1220 | return 0; | |
1221 | } | |
1222 | ||
c3f78043 ND |
1223 | static void mxt_update_crc(struct mxt_data *data, u8 cmd, u8 value) |
1224 | { | |
1225 | /* | |
1226 | * On failure, CRC is set to 0 and config will always be | |
1227 | * downloaded. | |
1228 | */ | |
1229 | data->config_crc = 0; | |
1230 | reinit_completion(&data->crc_completion); | |
1231 | ||
1232 | mxt_t6_command(data, cmd, value, true); | |
1233 | ||
1234 | /* | |
1235 | * Wait for crc message. On failure, CRC is set to 0 and config will | |
1236 | * always be downloaded. | |
1237 | */ | |
1238 | mxt_wait_for_completion(data, &data->crc_completion, MXT_CRC_TIMEOUT); | |
1239 | } | |
1240 | ||
4ce6fa01 ND |
1241 | static void mxt_calc_crc24(u32 *crc, u8 firstbyte, u8 secondbyte) |
1242 | { | |
1243 | static const unsigned int crcpoly = 0x80001B; | |
1244 | u32 result; | |
1245 | u32 data_word; | |
1246 | ||
1247 | data_word = (secondbyte << 8) | firstbyte; | |
1248 | result = ((*crc << 1) ^ data_word); | |
1249 | ||
1250 | if (result & 0x1000000) | |
1251 | result ^= crcpoly; | |
1252 | ||
1253 | *crc = result; | |
1254 | } | |
1255 | ||
1256 | static u32 mxt_calculate_crc(u8 *base, off_t start_off, off_t end_off) | |
1257 | { | |
1258 | u32 crc = 0; | |
1259 | u8 *ptr = base + start_off; | |
1260 | u8 *last_val = base + end_off - 1; | |
1261 | ||
1262 | if (end_off < start_off) | |
1263 | return -EINVAL; | |
1264 | ||
1265 | while (ptr < last_val) { | |
1266 | mxt_calc_crc24(&crc, *ptr, *(ptr + 1)); | |
1267 | ptr += 2; | |
1268 | } | |
1269 | ||
1270 | /* if len is odd, fill the last byte with 0 */ | |
1271 | if (ptr == last_val) | |
1272 | mxt_calc_crc24(&crc, *ptr, 0); | |
1273 | ||
1274 | /* Mask to 24-bit */ | |
1275 | crc &= 0x00FFFFFF; | |
1276 | ||
1277 | return crc; | |
1278 | } | |
1279 | ||
efdbd7ae DT |
1280 | static int mxt_prepare_cfg_mem(struct mxt_data *data, |
1281 | const struct firmware *cfg, | |
1282 | unsigned int data_pos, | |
1283 | unsigned int cfg_start_ofs, | |
1284 | u8 *config_mem, | |
1285 | size_t config_mem_size) | |
1286 | { | |
1287 | struct device *dev = &data->client->dev; | |
1288 | struct mxt_object *object; | |
1289 | unsigned int type, instance, size, byte_offset; | |
1290 | int offset; | |
1291 | int ret; | |
1292 | int i; | |
1293 | u16 reg; | |
1294 | u8 val; | |
1295 | ||
1296 | while (data_pos < cfg->size) { | |
1297 | /* Read type, instance, length */ | |
1298 | ret = sscanf(cfg->data + data_pos, "%x %x %x%n", | |
1299 | &type, &instance, &size, &offset); | |
1300 | if (ret == 0) { | |
1301 | /* EOF */ | |
1302 | break; | |
1303 | } else if (ret != 3) { | |
1304 | dev_err(dev, "Bad format: failed to parse object\n"); | |
1305 | return -EINVAL; | |
1306 | } | |
1307 | data_pos += offset; | |
1308 | ||
1309 | object = mxt_get_object(data, type); | |
1310 | if (!object) { | |
1311 | /* Skip object */ | |
1312 | for (i = 0; i < size; i++) { | |
1313 | ret = sscanf(cfg->data + data_pos, "%hhx%n", | |
041fa159 DT |
1314 | &val, &offset); |
1315 | if (ret != 1) { | |
1316 | dev_err(dev, "Bad format in T%d at %d\n", | |
1317 | type, i); | |
1318 | return -EINVAL; | |
1319 | } | |
efdbd7ae DT |
1320 | data_pos += offset; |
1321 | } | |
1322 | continue; | |
1323 | } | |
1324 | ||
1325 | if (size > mxt_obj_size(object)) { | |
1326 | /* | |
1327 | * Either we are in fallback mode due to wrong | |
1328 | * config or config from a later fw version, | |
1329 | * or the file is corrupt or hand-edited. | |
1330 | */ | |
1331 | dev_warn(dev, "Discarding %zu byte(s) in T%u\n", | |
1332 | size - mxt_obj_size(object), type); | |
1333 | } else if (mxt_obj_size(object) > size) { | |
1334 | /* | |
1335 | * If firmware is upgraded, new bytes may be added to | |
1336 | * end of objects. It is generally forward compatible | |
1337 | * to zero these bytes - previous behaviour will be | |
1338 | * retained. However this does invalidate the CRC and | |
1339 | * will force fallback mode until the configuration is | |
1340 | * updated. We warn here but do nothing else - the | |
1341 | * malloc has zeroed the entire configuration. | |
1342 | */ | |
1343 | dev_warn(dev, "Zeroing %zu byte(s) in T%d\n", | |
1344 | mxt_obj_size(object) - size, type); | |
1345 | } | |
1346 | ||
1347 | if (instance >= mxt_obj_instances(object)) { | |
1348 | dev_err(dev, "Object instances exceeded!\n"); | |
1349 | return -EINVAL; | |
1350 | } | |
1351 | ||
1352 | reg = object->start_address + mxt_obj_size(object) * instance; | |
1353 | ||
1354 | for (i = 0; i < size; i++) { | |
1355 | ret = sscanf(cfg->data + data_pos, "%hhx%n", | |
1356 | &val, | |
1357 | &offset); | |
1358 | if (ret != 1) { | |
041fa159 DT |
1359 | dev_err(dev, "Bad format in T%d at %d\n", |
1360 | type, i); | |
efdbd7ae DT |
1361 | return -EINVAL; |
1362 | } | |
1363 | data_pos += offset; | |
1364 | ||
1365 | if (i > mxt_obj_size(object)) | |
1366 | continue; | |
1367 | ||
1368 | byte_offset = reg + i - cfg_start_ofs; | |
1369 | ||
041fa159 | 1370 | if (byte_offset >= 0 && byte_offset < config_mem_size) { |
efdbd7ae DT |
1371 | *(config_mem + byte_offset) = val; |
1372 | } else { | |
1373 | dev_err(dev, "Bad object: reg:%d, T%d, ofs=%d\n", | |
1374 | reg, object->type, byte_offset); | |
1375 | return -EINVAL; | |
1376 | } | |
1377 | } | |
1378 | } | |
1379 | ||
1380 | return 0; | |
1381 | } | |
1382 | ||
1383 | static int mxt_upload_cfg_mem(struct mxt_data *data, unsigned int cfg_start, | |
1384 | u8 *config_mem, size_t config_mem_size) | |
1385 | { | |
1386 | unsigned int byte_offset = 0; | |
1387 | int error; | |
1388 | ||
1389 | /* Write configuration as blocks */ | |
1390 | while (byte_offset < config_mem_size) { | |
1391 | unsigned int size = config_mem_size - byte_offset; | |
1392 | ||
1393 | if (size > MXT_MAX_BLOCK_WRITE) | |
1394 | size = MXT_MAX_BLOCK_WRITE; | |
1395 | ||
1396 | error = __mxt_write_reg(data->client, | |
1397 | cfg_start + byte_offset, | |
1398 | size, config_mem + byte_offset); | |
1399 | if (error) { | |
1400 | dev_err(&data->client->dev, | |
1401 | "Config write error, ret=%d\n", error); | |
1402 | return error; | |
1403 | } | |
1404 | ||
1405 | byte_offset += size; | |
1406 | } | |
1407 | ||
1408 | return 0; | |
1409 | } | |
1410 | ||
7f3884f7 ND |
1411 | static int mxt_init_t7_power_cfg(struct mxt_data *data); |
1412 | ||
50a77c65 ND |
1413 | /* |
1414 | * mxt_update_cfg - download configuration to chip | |
1415 | * | |
1416 | * Atmel Raw Config File Format | |
1417 | * | |
1418 | * The first four lines of the raw config file contain: | |
1419 | * 1) Version | |
1420 | * 2) Chip ID Information (first 7 bytes of device memory) | |
1421 | * 3) Chip Information Block 24-bit CRC Checksum | |
1422 | * 4) Chip Configuration 24-bit CRC Checksum | |
1423 | * | |
1424 | * The rest of the file consists of one line per object instance: | |
1425 | * <TYPE> <INSTANCE> <SIZE> <CONTENTS> | |
1426 | * | |
1427 | * <TYPE> - 2-byte object type as hex | |
1428 | * <INSTANCE> - 2-byte object instance number as hex | |
1429 | * <SIZE> - 2-byte object size as hex | |
1430 | * <CONTENTS> - array of <SIZE> 1-byte hex values | |
1431 | */ | |
1432 | static int mxt_update_cfg(struct mxt_data *data, const struct firmware *cfg) | |
4cf51c38 | 1433 | { |
4cf51c38 | 1434 | struct device *dev = &data->client->dev; |
50a77c65 | 1435 | struct mxt_info cfg_info; |
cf94bc09 | 1436 | int ret; |
50a77c65 | 1437 | int offset; |
4ce6fa01 | 1438 | int data_pos; |
50a77c65 | 1439 | int i; |
4ce6fa01 ND |
1440 | int cfg_start_ofs; |
1441 | u32 info_crc, config_crc, calculated_crc; | |
1442 | u8 *config_mem; | |
1443 | size_t config_mem_size; | |
4cf51c38 | 1444 | |
50a77c65 ND |
1445 | mxt_update_crc(data, MXT_COMMAND_REPORTALL, 1); |
1446 | ||
1447 | if (strncmp(cfg->data, MXT_CFG_MAGIC, strlen(MXT_CFG_MAGIC))) { | |
1448 | dev_err(dev, "Unrecognised config file\n"); | |
efdbd7ae | 1449 | return -EINVAL; |
4cf51c38 JS |
1450 | } |
1451 | ||
4ce6fa01 | 1452 | data_pos = strlen(MXT_CFG_MAGIC); |
50a77c65 ND |
1453 | |
1454 | /* Load information block and check */ | |
1455 | for (i = 0; i < sizeof(struct mxt_info); i++) { | |
4ce6fa01 | 1456 | ret = sscanf(cfg->data + data_pos, "%hhx%n", |
50a77c65 ND |
1457 | (unsigned char *)&cfg_info + i, |
1458 | &offset); | |
1459 | if (ret != 1) { | |
1460 | dev_err(dev, "Bad format\n"); | |
efdbd7ae | 1461 | return -EINVAL; |
50a77c65 | 1462 | } |
c3f78043 | 1463 | |
4ce6fa01 | 1464 | data_pos += offset; |
c3f78043 ND |
1465 | } |
1466 | ||
068bdb67 | 1467 | if (cfg_info.family_id != data->info->family_id) { |
50a77c65 | 1468 | dev_err(dev, "Family ID mismatch!\n"); |
efdbd7ae | 1469 | return -EINVAL; |
50a77c65 | 1470 | } |
c3f78043 | 1471 | |
068bdb67 | 1472 | if (cfg_info.variant_id != data->info->variant_id) { |
50a77c65 | 1473 | dev_err(dev, "Variant ID mismatch!\n"); |
efdbd7ae | 1474 | return -EINVAL; |
50a77c65 | 1475 | } |
4cf51c38 | 1476 | |
4ce6fa01 ND |
1477 | /* Read CRCs */ |
1478 | ret = sscanf(cfg->data + data_pos, "%x%n", &info_crc, &offset); | |
50a77c65 ND |
1479 | if (ret != 1) { |
1480 | dev_err(dev, "Bad format: failed to parse Info CRC\n"); | |
efdbd7ae | 1481 | return -EINVAL; |
50a77c65 | 1482 | } |
4ce6fa01 | 1483 | data_pos += offset; |
50a77c65 | 1484 | |
4ce6fa01 | 1485 | ret = sscanf(cfg->data + data_pos, "%x%n", &config_crc, &offset); |
50a77c65 ND |
1486 | if (ret != 1) { |
1487 | dev_err(dev, "Bad format: failed to parse Config CRC\n"); | |
efdbd7ae | 1488 | return -EINVAL; |
50a77c65 | 1489 | } |
4ce6fa01 | 1490 | data_pos += offset; |
50a77c65 | 1491 | |
4ce6fa01 ND |
1492 | /* |
1493 | * The Info Block CRC is calculated over mxt_info and the object | |
1494 | * table. If it does not match then we are trying to load the | |
1495 | * configuration from a different chip or firmware version, so | |
1496 | * the configuration CRC is invalid anyway. | |
1497 | */ | |
1498 | if (info_crc == data->info_crc) { | |
1499 | if (config_crc == 0 || data->config_crc == 0) { | |
1500 | dev_info(dev, "CRC zero, attempting to apply config\n"); | |
1501 | } else if (config_crc == data->config_crc) { | |
1502 | dev_dbg(dev, "Config CRC 0x%06X: OK\n", | |
1503 | data->config_crc); | |
efdbd7ae | 1504 | return 0; |
4ce6fa01 ND |
1505 | } else { |
1506 | dev_info(dev, "Config CRC 0x%06X: does not match file 0x%06X\n", | |
1507 | data->config_crc, config_crc); | |
1508 | } | |
1509 | } else { | |
1510 | dev_warn(dev, | |
1511 | "Warning: Info CRC error - device=0x%06X file=0x%06X\n", | |
1512 | data->info_crc, info_crc); | |
50a77c65 ND |
1513 | } |
1514 | ||
4ce6fa01 ND |
1515 | /* Malloc memory to store configuration */ |
1516 | cfg_start_ofs = MXT_OBJECT_START + | |
068bdb67 | 1517 | data->info->object_num * sizeof(struct mxt_object) + |
4ce6fa01 ND |
1518 | MXT_INFO_CHECKSUM_SIZE; |
1519 | config_mem_size = data->mem_size - cfg_start_ofs; | |
1520 | config_mem = kzalloc(config_mem_size, GFP_KERNEL); | |
1521 | if (!config_mem) { | |
1522 | dev_err(dev, "Failed to allocate memory\n"); | |
efdbd7ae | 1523 | return -ENOMEM; |
4ce6fa01 | 1524 | } |
50a77c65 | 1525 | |
efdbd7ae DT |
1526 | ret = mxt_prepare_cfg_mem(data, cfg, data_pos, cfg_start_ofs, |
1527 | config_mem, config_mem_size); | |
1528 | if (ret) | |
1529 | goto release_mem; | |
50a77c65 | 1530 | |
4ce6fa01 ND |
1531 | /* Calculate crc of the received configs (not the raw config file) */ |
1532 | if (data->T7_address < cfg_start_ofs) { | |
1533 | dev_err(dev, "Bad T7 address, T7addr = %x, config offset %x\n", | |
1534 | data->T7_address, cfg_start_ofs); | |
1535 | ret = 0; | |
1536 | goto release_mem; | |
1537 | } | |
50a77c65 | 1538 | |
4ce6fa01 ND |
1539 | calculated_crc = mxt_calculate_crc(config_mem, |
1540 | data->T7_address - cfg_start_ofs, | |
1541 | config_mem_size); | |
1542 | ||
efdbd7ae | 1543 | if (config_crc > 0 && config_crc != calculated_crc) |
4ce6fa01 ND |
1544 | dev_warn(dev, "Config CRC error, calculated=%06X, file=%06X\n", |
1545 | calculated_crc, config_crc); | |
1546 | ||
efdbd7ae DT |
1547 | ret = mxt_upload_cfg_mem(data, cfg_start_ofs, |
1548 | config_mem, config_mem_size); | |
1549 | if (ret) | |
1550 | goto release_mem; | |
4cf51c38 | 1551 | |
c3f78043 ND |
1552 | mxt_update_crc(data, MXT_COMMAND_BACKUPNV, MXT_BACKUP_VALUE); |
1553 | ||
1554 | ret = mxt_soft_reset(data); | |
1555 | if (ret) | |
4ce6fa01 | 1556 | goto release_mem; |
c3f78043 ND |
1557 | |
1558 | dev_info(dev, "Config successfully updated\n"); | |
1559 | ||
7f3884f7 ND |
1560 | /* T7 config may have changed */ |
1561 | mxt_init_t7_power_cfg(data); | |
1562 | ||
4ce6fa01 ND |
1563 | release_mem: |
1564 | kfree(config_mem); | |
50a77c65 | 1565 | return ret; |
4cf51c38 JS |
1566 | } |
1567 | ||
58e4aeee | 1568 | static void mxt_free_input_device(struct mxt_data *data) |
5f3f9bc2 | 1569 | { |
58e4aeee SW |
1570 | if (data->input_dev) { |
1571 | input_unregister_device(data->input_dev); | |
1572 | data->input_dev = NULL; | |
1573 | } | |
1574 | } | |
5f3f9bc2 | 1575 | |
58e4aeee SW |
1576 | static void mxt_free_object_table(struct mxt_data *data) |
1577 | { | |
ecfdd7e2 ND |
1578 | #ifdef CONFIG_TOUCHSCREEN_ATMEL_MXT_T37 |
1579 | video_unregister_device(&data->dbg.vdev); | |
1580 | v4l2_device_unregister(&data->dbg.v4l2); | |
1581 | #endif | |
5f3f9bc2 | 1582 | data->object_table = NULL; |
068bdb67 ND |
1583 | data->info = NULL; |
1584 | kfree(data->raw_info_block); | |
1585 | data->raw_info_block = NULL; | |
5f3f9bc2 ND |
1586 | kfree(data->msg_buf); |
1587 | data->msg_buf = NULL; | |
b9b05a89 | 1588 | data->T5_address = 0; |
5f3f9bc2 ND |
1589 | data->T5_msg_size = 0; |
1590 | data->T6_reportid = 0; | |
1591 | data->T7_address = 0; | |
1592 | data->T9_reportid_min = 0; | |
1593 | data->T9_reportid_max = 0; | |
1594 | data->T19_reportid = 0; | |
9d8dc3e5 | 1595 | data->T44_address = 0; |
b23157dc ND |
1596 | data->T100_reportid_min = 0; |
1597 | data->T100_reportid_max = 0; | |
9d8dc3e5 | 1598 | data->max_reportid = 0; |
5f3f9bc2 ND |
1599 | } |
1600 | ||
068bdb67 ND |
1601 | static int mxt_parse_object_table(struct mxt_data *data, |
1602 | struct mxt_object *object_table) | |
4cf51c38 | 1603 | { |
333e5a9a | 1604 | struct i2c_client *client = data->client; |
4cf51c38 | 1605 | int i; |
333e5a9a | 1606 | u8 reportid; |
4ce6fa01 | 1607 | u16 end_address; |
333e5a9a | 1608 | |
333e5a9a DK |
1609 | /* Valid Report IDs start counting from 1 */ |
1610 | reportid = 1; | |
4ce6fa01 | 1611 | data->mem_size = 0; |
068bdb67 | 1612 | for (i = 0; i < data->info->object_num; i++) { |
dd24dcf5 | 1613 | struct mxt_object *object = object_table + i; |
333e5a9a | 1614 | u8 min_id, max_id; |
4cf51c38 | 1615 | |
333e5a9a | 1616 | le16_to_cpus(&object->start_address); |
4cf51c38 JS |
1617 | |
1618 | if (object->num_report_ids) { | |
333e5a9a | 1619 | min_id = reportid; |
4cf51c38 | 1620 | reportid += object->num_report_ids * |
1e0c0c5b | 1621 | mxt_obj_instances(object); |
333e5a9a DK |
1622 | max_id = reportid - 1; |
1623 | } else { | |
1624 | min_id = 0; | |
1625 | max_id = 0; | |
1626 | } | |
1627 | ||
1628 | dev_dbg(&data->client->dev, | |
7bed6805 | 1629 | "T%u Start:%u Size:%zu Instances:%zu Report IDs:%u-%u\n", |
1e0c0c5b DK |
1630 | object->type, object->start_address, |
1631 | mxt_obj_size(object), mxt_obj_instances(object), | |
1632 | min_id, max_id); | |
333e5a9a DK |
1633 | |
1634 | switch (object->type) { | |
5f3f9bc2 | 1635 | case MXT_GEN_MESSAGE_T5: |
068bdb67 ND |
1636 | if (data->info->family_id == 0x80 && |
1637 | data->info->version < 0x20) { | |
9d8dc3e5 | 1638 | /* |
437d4f37 ND |
1639 | * On mXT224 firmware versions prior to V2.0 |
1640 | * read and discard unused CRC byte otherwise | |
1641 | * DMA reads are misaligned. | |
9d8dc3e5 ND |
1642 | */ |
1643 | data->T5_msg_size = mxt_obj_size(object); | |
1644 | } else { | |
1645 | /* CRC not enabled, so skip last byte */ | |
1646 | data->T5_msg_size = mxt_obj_size(object) - 1; | |
1647 | } | |
b9b05a89 | 1648 | data->T5_address = object->start_address; |
041fa159 | 1649 | break; |
fdf80421 DK |
1650 | case MXT_GEN_COMMAND_T6: |
1651 | data->T6_reportid = min_id; | |
a4a2ef46 | 1652 | data->T6_address = object->start_address; |
fdf80421 | 1653 | break; |
4ce6fa01 ND |
1654 | case MXT_GEN_POWER_T7: |
1655 | data->T7_address = object->start_address; | |
1656 | break; | |
333e5a9a | 1657 | case MXT_TOUCH_MULTI_T9: |
b23157dc | 1658 | data->multitouch = MXT_TOUCH_MULTI_T9; |
333e5a9a DK |
1659 | data->T9_reportid_min = min_id; |
1660 | data->T9_reportid_max = max_id; | |
9d8dc3e5 ND |
1661 | data->num_touchids = object->num_report_ids |
1662 | * mxt_obj_instances(object); | |
1663 | break; | |
1664 | case MXT_SPT_MESSAGECOUNT_T44: | |
1665 | data->T44_address = object->start_address; | |
333e5a9a | 1666 | break; |
22dfab7f DK |
1667 | case MXT_SPT_GPIOPWM_T19: |
1668 | data->T19_reportid = min_id; | |
1669 | break; | |
b23157dc ND |
1670 | case MXT_TOUCH_MULTITOUCHSCREEN_T100: |
1671 | data->multitouch = MXT_TOUCH_MULTITOUCHSCREEN_T100; | |
1672 | data->T100_reportid_min = min_id; | |
1673 | data->T100_reportid_max = max_id; | |
1674 | /* first two report IDs reserved */ | |
1675 | data->num_touchids = object->num_report_ids - 2; | |
1676 | break; | |
4cf51c38 | 1677 | } |
4ce6fa01 ND |
1678 | |
1679 | end_address = object->start_address | |
1680 | + mxt_obj_size(object) * mxt_obj_instances(object) - 1; | |
1681 | ||
1682 | if (end_address >= data->mem_size) | |
1683 | data->mem_size = end_address + 1; | |
4cf51c38 JS |
1684 | } |
1685 | ||
9d8dc3e5 ND |
1686 | /* Store maximum reportid */ |
1687 | data->max_reportid = reportid; | |
1688 | ||
1689 | /* If T44 exists, T5 position has to be directly after */ | |
1690 | if (data->T44_address && (data->T5_address != data->T44_address + 1)) { | |
1691 | dev_err(&client->dev, "Invalid T44 position\n"); | |
068bdb67 | 1692 | return -EINVAL; |
9d8dc3e5 ND |
1693 | } |
1694 | ||
1695 | data->msg_buf = kcalloc(data->max_reportid, | |
1696 | data->T5_msg_size, GFP_KERNEL); | |
068bdb67 ND |
1697 | if (!data->msg_buf) |
1698 | return -ENOMEM; | |
1699 | ||
1700 | return 0; | |
1701 | } | |
1702 | ||
1703 | static int mxt_read_info_block(struct mxt_data *data) | |
1704 | { | |
1705 | struct i2c_client *client = data->client; | |
1706 | int error; | |
1707 | size_t size; | |
1708 | void *id_buf, *buf; | |
1709 | uint8_t num_objects; | |
1710 | u32 calculated_crc; | |
1711 | u8 *crc_ptr; | |
1712 | ||
1713 | /* If info block already allocated, free it */ | |
1714 | if (data->raw_info_block) | |
1715 | mxt_free_object_table(data); | |
1716 | ||
1717 | /* Read 7-byte ID information block starting at address 0 */ | |
1718 | size = sizeof(struct mxt_info); | |
1719 | id_buf = kzalloc(size, GFP_KERNEL); | |
1720 | if (!id_buf) | |
1721 | return -ENOMEM; | |
1722 | ||
1723 | error = __mxt_read_reg(client, 0, size, id_buf); | |
1724 | if (error) | |
1725 | goto err_free_mem; | |
1726 | ||
1727 | /* Resize buffer to give space for rest of info block */ | |
1728 | num_objects = ((struct mxt_info *)id_buf)->object_num; | |
1729 | size += (num_objects * sizeof(struct mxt_object)) | |
1730 | + MXT_INFO_CHECKSUM_SIZE; | |
1731 | ||
1732 | buf = krealloc(id_buf, size, GFP_KERNEL); | |
1733 | if (!buf) { | |
5f3f9bc2 | 1734 | error = -ENOMEM; |
068bdb67 ND |
1735 | goto err_free_mem; |
1736 | } | |
1737 | id_buf = buf; | |
1738 | ||
1739 | /* Read rest of info block */ | |
1740 | error = __mxt_read_reg(client, MXT_OBJECT_START, | |
1741 | size - MXT_OBJECT_START, | |
1742 | id_buf + MXT_OBJECT_START); | |
1743 | if (error) | |
1744 | goto err_free_mem; | |
1745 | ||
1746 | /* Extract & calculate checksum */ | |
1747 | crc_ptr = id_buf + size - MXT_INFO_CHECKSUM_SIZE; | |
1748 | data->info_crc = crc_ptr[0] | (crc_ptr[1] << 8) | (crc_ptr[2] << 16); | |
1749 | ||
1750 | calculated_crc = mxt_calculate_crc(id_buf, 0, | |
1751 | size - MXT_INFO_CHECKSUM_SIZE); | |
1752 | ||
1753 | /* | |
1754 | * CRC mismatch can be caused by data corruption due to I2C comms | |
1755 | * issue or else device is not using Object Based Protocol (eg i2c-hid) | |
1756 | */ | |
1757 | if ((data->info_crc == 0) || (data->info_crc != calculated_crc)) { | |
1758 | dev_err(&client->dev, | |
1759 | "Info Block CRC error calculated=0x%06X read=0x%06X\n", | |
1760 | calculated_crc, data->info_crc); | |
1761 | error = -EIO; | |
1762 | goto err_free_mem; | |
1763 | } | |
1764 | ||
1765 | data->raw_info_block = id_buf; | |
1766 | data->info = (struct mxt_info *)id_buf; | |
1767 | ||
1768 | dev_info(&client->dev, | |
1769 | "Family: %u Variant: %u Firmware V%u.%u.%02X Objects: %u\n", | |
1770 | data->info->family_id, data->info->variant_id, | |
1771 | data->info->version >> 4, data->info->version & 0xf, | |
1772 | data->info->build, data->info->object_num); | |
1773 | ||
1774 | /* Parse object table information */ | |
1775 | error = mxt_parse_object_table(data, id_buf + MXT_OBJECT_START); | |
1776 | if (error) { | |
1777 | dev_err(&client->dev, "Error %d parsing object table\n", error); | |
1778 | mxt_free_object_table(data); | |
1779 | goto err_free_mem; | |
5f3f9bc2 ND |
1780 | } |
1781 | ||
068bdb67 | 1782 | data->object_table = (struct mxt_object *)(id_buf + MXT_OBJECT_START); |
dd24dcf5 | 1783 | |
4cf51c38 | 1784 | return 0; |
4cf51c38 | 1785 | |
068bdb67 ND |
1786 | err_free_mem: |
1787 | kfree(id_buf); | |
5f3f9bc2 | 1788 | return error; |
7d4fa100 DK |
1789 | } |
1790 | ||
61dc1aba ND |
1791 | static int mxt_read_t9_resolution(struct mxt_data *data) |
1792 | { | |
1793 | struct i2c_client *client = data->client; | |
1794 | int error; | |
1795 | struct t9_range range; | |
1796 | unsigned char orient; | |
1797 | struct mxt_object *object; | |
1798 | ||
1799 | object = mxt_get_object(data, MXT_TOUCH_MULTI_T9); | |
1800 | if (!object) | |
1801 | return -EINVAL; | |
1802 | ||
2786489f ND |
1803 | error = __mxt_read_reg(client, |
1804 | object->start_address + MXT_T9_XSIZE, | |
1805 | sizeof(data->xsize), &data->xsize); | |
1806 | if (error) | |
1807 | return error; | |
1808 | ||
1809 | error = __mxt_read_reg(client, | |
1810 | object->start_address + MXT_T9_YSIZE, | |
1811 | sizeof(data->ysize), &data->ysize); | |
1812 | if (error) | |
1813 | return error; | |
1814 | ||
61dc1aba ND |
1815 | error = __mxt_read_reg(client, |
1816 | object->start_address + MXT_T9_RANGE, | |
1817 | sizeof(range), &range); | |
1818 | if (error) | |
1819 | return error; | |
1820 | ||
1c0276d5 ND |
1821 | data->max_x = get_unaligned_le16(&range.x); |
1822 | data->max_y = get_unaligned_le16(&range.y); | |
61dc1aba ND |
1823 | |
1824 | error = __mxt_read_reg(client, | |
1825 | object->start_address + MXT_T9_ORIENT, | |
1826 | 1, &orient); | |
1827 | if (error) | |
1828 | return error; | |
1829 | ||
1c0276d5 | 1830 | data->xy_switch = orient & MXT_T9_ORIENT_SWITCH; |
de601f71 ND |
1831 | data->invertx = orient & MXT_T9_ORIENT_INVERTX; |
1832 | data->inverty = orient & MXT_T9_ORIENT_INVERTY; | |
61dc1aba ND |
1833 | |
1834 | return 0; | |
1835 | } | |
1836 | ||
b23157dc ND |
1837 | static int mxt_read_t100_config(struct mxt_data *data) |
1838 | { | |
1839 | struct i2c_client *client = data->client; | |
1840 | int error; | |
1841 | struct mxt_object *object; | |
1842 | u16 range_x, range_y; | |
1843 | u8 cfg, tchaux; | |
1844 | u8 aux; | |
1845 | ||
1846 | object = mxt_get_object(data, MXT_TOUCH_MULTITOUCHSCREEN_T100); | |
1847 | if (!object) | |
1848 | return -EINVAL; | |
1849 | ||
1c0276d5 | 1850 | /* read touchscreen dimensions */ |
b23157dc ND |
1851 | error = __mxt_read_reg(client, |
1852 | object->start_address + MXT_T100_XRANGE, | |
1853 | sizeof(range_x), &range_x); | |
1854 | if (error) | |
1855 | return error; | |
1856 | ||
1c0276d5 | 1857 | data->max_x = get_unaligned_le16(&range_x); |
b23157dc ND |
1858 | |
1859 | error = __mxt_read_reg(client, | |
1860 | object->start_address + MXT_T100_YRANGE, | |
1861 | sizeof(range_y), &range_y); | |
1862 | if (error) | |
1863 | return error; | |
1864 | ||
1c0276d5 | 1865 | data->max_y = get_unaligned_le16(&range_y); |
b23157dc | 1866 | |
2786489f ND |
1867 | error = __mxt_read_reg(client, |
1868 | object->start_address + MXT_T100_XSIZE, | |
1869 | sizeof(data->xsize), &data->xsize); | |
1870 | if (error) | |
1871 | return error; | |
1872 | ||
1873 | error = __mxt_read_reg(client, | |
1874 | object->start_address + MXT_T100_YSIZE, | |
1875 | sizeof(data->ysize), &data->ysize); | |
1876 | if (error) | |
1877 | return error; | |
1878 | ||
1c0276d5 | 1879 | /* read orientation config */ |
b23157dc ND |
1880 | error = __mxt_read_reg(client, |
1881 | object->start_address + MXT_T100_CFG1, | |
1882 | 1, &cfg); | |
1883 | if (error) | |
1884 | return error; | |
1885 | ||
1c0276d5 | 1886 | data->xy_switch = cfg & MXT_T100_CFG_SWITCHXY; |
de601f71 ND |
1887 | data->invertx = cfg & MXT_T100_CFG_INVERTX; |
1888 | data->inverty = cfg & MXT_T100_CFG_INVERTY; | |
1c0276d5 ND |
1889 | |
1890 | /* allocate aux bytes */ | |
b23157dc ND |
1891 | error = __mxt_read_reg(client, |
1892 | object->start_address + MXT_T100_TCHAUX, | |
1893 | 1, &tchaux); | |
1894 | if (error) | |
1895 | return error; | |
1896 | ||
b23157dc ND |
1897 | aux = 6; |
1898 | ||
1899 | if (tchaux & MXT_T100_TCHAUX_VECT) | |
1900 | data->t100_aux_vect = aux++; | |
1901 | ||
1902 | if (tchaux & MXT_T100_TCHAUX_AMPL) | |
1903 | data->t100_aux_ampl = aux++; | |
1904 | ||
1905 | if (tchaux & MXT_T100_TCHAUX_AREA) | |
1906 | data->t100_aux_area = aux++; | |
1907 | ||
1908 | dev_dbg(&client->dev, | |
1909 | "T100 aux mappings vect:%u ampl:%u area:%u\n", | |
1910 | data->t100_aux_vect, data->t100_aux_ampl, data->t100_aux_area); | |
1911 | ||
b23157dc ND |
1912 | return 0; |
1913 | } | |
1914 | ||
7a53d609 ND |
1915 | static int mxt_input_open(struct input_dev *dev); |
1916 | static void mxt_input_close(struct input_dev *dev); | |
1917 | ||
b6d2d328 SS |
1918 | static void mxt_set_up_as_touchpad(struct input_dev *input_dev, |
1919 | struct mxt_data *data) | |
1920 | { | |
b6d2d328 SS |
1921 | int i; |
1922 | ||
1923 | input_dev->name = "Atmel maXTouch Touchpad"; | |
1924 | ||
1925 | __set_bit(INPUT_PROP_BUTTONPAD, input_dev->propbit); | |
1926 | ||
1927 | input_abs_set_res(input_dev, ABS_X, MXT_PIXELS_PER_MM); | |
1928 | input_abs_set_res(input_dev, ABS_Y, MXT_PIXELS_PER_MM); | |
1929 | input_abs_set_res(input_dev, ABS_MT_POSITION_X, | |
1930 | MXT_PIXELS_PER_MM); | |
1931 | input_abs_set_res(input_dev, ABS_MT_POSITION_Y, | |
1932 | MXT_PIXELS_PER_MM); | |
1933 | ||
96a938aa DT |
1934 | for (i = 0; i < data->t19_num_keys; i++) |
1935 | if (data->t19_keymap[i] != KEY_RESERVED) | |
b6d2d328 | 1936 | input_set_capability(input_dev, EV_KEY, |
96a938aa | 1937 | data->t19_keymap[i]); |
b6d2d328 SS |
1938 | } |
1939 | ||
b23157dc | 1940 | static int mxt_initialize_input_device(struct mxt_data *data) |
7a53d609 | 1941 | { |
b6d2d328 | 1942 | struct device *dev = &data->client->dev; |
7a53d609 ND |
1943 | struct input_dev *input_dev; |
1944 | int error; | |
1945 | unsigned int num_mt_slots; | |
1946 | unsigned int mt_flags = 0; | |
7a53d609 | 1947 | |
b23157dc ND |
1948 | switch (data->multitouch) { |
1949 | case MXT_TOUCH_MULTI_T9: | |
1950 | num_mt_slots = data->T9_reportid_max - data->T9_reportid_min + 1; | |
1951 | error = mxt_read_t9_resolution(data); | |
1952 | if (error) | |
1953 | dev_warn(dev, "Failed to initialize T9 resolution\n"); | |
1954 | break; | |
1955 | ||
1956 | case MXT_TOUCH_MULTITOUCHSCREEN_T100: | |
1957 | num_mt_slots = data->num_touchids; | |
1958 | error = mxt_read_t100_config(data); | |
1959 | if (error) | |
1960 | dev_warn(dev, "Failed to read T100 config\n"); | |
1961 | break; | |
1962 | ||
1963 | default: | |
1964 | dev_err(dev, "Invalid multitouch object\n"); | |
1965 | return -EINVAL; | |
1966 | } | |
7a53d609 | 1967 | |
1c0276d5 ND |
1968 | /* Handle default values and orientation switch */ |
1969 | if (data->max_x == 0) | |
1970 | data->max_x = 1023; | |
1971 | ||
1972 | if (data->max_y == 0) | |
1973 | data->max_y = 1023; | |
1974 | ||
1975 | if (data->xy_switch) | |
1976 | swap(data->max_x, data->max_y); | |
1977 | ||
1978 | dev_info(dev, "Touchscreen size X%uY%u\n", data->max_x, data->max_y); | |
1979 | ||
1980 | /* Register input device */ | |
7a53d609 ND |
1981 | input_dev = input_allocate_device(); |
1982 | if (!input_dev) { | |
1983 | dev_err(dev, "Failed to allocate memory\n"); | |
1984 | return -ENOMEM; | |
1985 | } | |
1986 | ||
1987 | input_dev->name = "Atmel maXTouch Touchscreen"; | |
1988 | input_dev->phys = data->phys; | |
1989 | input_dev->id.bustype = BUS_I2C; | |
1990 | input_dev->dev.parent = dev; | |
1991 | input_dev->open = mxt_input_open; | |
1992 | input_dev->close = mxt_input_close; | |
1993 | ||
b23157dc | 1994 | input_set_capability(input_dev, EV_KEY, BTN_TOUCH); |
7a53d609 | 1995 | |
7a53d609 | 1996 | /* For single touch */ |
b23157dc ND |
1997 | input_set_abs_params(input_dev, ABS_X, 0, data->max_x, 0, 0); |
1998 | input_set_abs_params(input_dev, ABS_Y, 0, data->max_y, 0, 0); | |
1999 | ||
2000 | if (data->multitouch == MXT_TOUCH_MULTI_T9 || | |
2001 | (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 && | |
2002 | data->t100_aux_ampl)) { | |
2003 | input_set_abs_params(input_dev, ABS_PRESSURE, 0, 255, 0, 0); | |
2004 | } | |
7a53d609 | 2005 | |
b6d2d328 | 2006 | /* If device has buttons we assume it is a touchpad */ |
96a938aa | 2007 | if (data->t19_num_keys) { |
b6d2d328 SS |
2008 | mxt_set_up_as_touchpad(input_dev, data); |
2009 | mt_flags |= INPUT_MT_POINTER; | |
eafc0c87 ND |
2010 | } else { |
2011 | mt_flags |= INPUT_MT_DIRECT; | |
b6d2d328 SS |
2012 | } |
2013 | ||
7a53d609 | 2014 | /* For multi touch */ |
7a53d609 ND |
2015 | error = input_mt_init_slots(input_dev, num_mt_slots, mt_flags); |
2016 | if (error) { | |
2017 | dev_err(dev, "Error %d initialising slots\n", error); | |
2018 | goto err_free_mem; | |
2019 | } | |
2020 | ||
b23157dc ND |
2021 | if (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100) { |
2022 | input_set_abs_params(input_dev, ABS_MT_TOOL_TYPE, | |
2023 | 0, MT_TOOL_MAX, 0, 0); | |
2024 | input_set_abs_params(input_dev, ABS_MT_DISTANCE, | |
2025 | MXT_DISTANCE_ACTIVE_TOUCH, | |
2026 | MXT_DISTANCE_HOVERING, | |
2027 | 0, 0); | |
2028 | } | |
2029 | ||
7a53d609 ND |
2030 | input_set_abs_params(input_dev, ABS_MT_POSITION_X, |
2031 | 0, data->max_x, 0, 0); | |
2032 | input_set_abs_params(input_dev, ABS_MT_POSITION_Y, | |
2033 | 0, data->max_y, 0, 0); | |
b23157dc ND |
2034 | |
2035 | if (data->multitouch == MXT_TOUCH_MULTI_T9 || | |
2036 | (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 && | |
2037 | data->t100_aux_area)) { | |
2038 | input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR, | |
2039 | 0, MXT_MAX_AREA, 0, 0); | |
2040 | } | |
2041 | ||
2042 | if (data->multitouch == MXT_TOUCH_MULTI_T9 || | |
2043 | (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 && | |
2044 | data->t100_aux_ampl)) { | |
2045 | input_set_abs_params(input_dev, ABS_MT_PRESSURE, | |
2046 | 0, 255, 0, 0); | |
2047 | } | |
2048 | ||
2049 | if (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 && | |
2050 | data->t100_aux_vect) { | |
2051 | input_set_abs_params(input_dev, ABS_MT_ORIENTATION, | |
2052 | 0, 255, 0, 0); | |
2053 | } | |
2054 | ||
2055 | if (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 && | |
2056 | data->t100_aux_ampl) { | |
2057 | input_set_abs_params(input_dev, ABS_MT_PRESSURE, | |
2058 | 0, 255, 0, 0); | |
2059 | } | |
2060 | ||
2061 | if (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 && | |
2062 | data->t100_aux_vect) { | |
2063 | input_set_abs_params(input_dev, ABS_MT_ORIENTATION, | |
2064 | 0, 255, 0, 0); | |
2065 | } | |
7a53d609 ND |
2066 | |
2067 | input_set_drvdata(input_dev, data); | |
2068 | ||
2069 | error = input_register_device(input_dev); | |
2070 | if (error) { | |
2071 | dev_err(dev, "Error %d registering input device\n", error); | |
2072 | goto err_free_mem; | |
2073 | } | |
2074 | ||
2075 | data->input_dev = input_dev; | |
2076 | ||
2077 | return 0; | |
2078 | ||
2079 | err_free_mem: | |
2080 | input_free_device(input_dev); | |
2081 | return error; | |
2082 | } | |
2083 | ||
50a77c65 ND |
2084 | static int mxt_configure_objects(struct mxt_data *data, |
2085 | const struct firmware *cfg); | |
2086 | ||
2087 | static void mxt_config_cb(const struct firmware *cfg, void *ctx) | |
2088 | { | |
2089 | mxt_configure_objects(ctx, cfg); | |
efdbd7ae | 2090 | release_firmware(cfg); |
50a77c65 ND |
2091 | } |
2092 | ||
7686b108 | 2093 | static int mxt_initialize(struct mxt_data *data) |
4cf51c38 JS |
2094 | { |
2095 | struct i2c_client *client = data->client; | |
6cd1ab0f | 2096 | int recovery_attempts = 0; |
4cf51c38 | 2097 | int error; |
4cf51c38 | 2098 | |
6cd1ab0f | 2099 | while (1) { |
068bdb67 | 2100 | error = mxt_read_info_block(data); |
6cd1ab0f DT |
2101 | if (!error) |
2102 | break; | |
2103 | ||
2104 | /* Check bootloader state */ | |
2105 | error = mxt_probe_bootloader(data, false); | |
8efaa5e5 | 2106 | if (error) { |
6cd1ab0f DT |
2107 | dev_info(&client->dev, "Trying alternate bootloader address\n"); |
2108 | error = mxt_probe_bootloader(data, true); | |
2109 | if (error) { | |
8efaa5e5 ND |
2110 | /* Chip is not in appmode or bootloader mode */ |
2111 | return error; | |
2112 | } | |
6cd1ab0f | 2113 | } |
a9fdd1e6 | 2114 | |
6cd1ab0f DT |
2115 | /* OK, we are in bootloader, see if we can recover */ |
2116 | if (++recovery_attempts > 1) { | |
2117 | dev_err(&client->dev, "Could not recover from bootloader mode\n"); | |
2118 | /* | |
2119 | * We can reflash from this state, so do not | |
2120 | * abort initialization. | |
2121 | */ | |
2122 | data->in_bootloader = true; | |
2123 | return 0; | |
8efaa5e5 | 2124 | } |
6cd1ab0f DT |
2125 | |
2126 | /* Attempt to exit bootloader into app mode */ | |
2127 | mxt_send_bootloader_cmd(data, false); | |
2128 | msleep(MXT_FW_RESET_TIME); | |
a9fdd1e6 | 2129 | } |
4cf51c38 | 2130 | |
041fa159 | 2131 | error = mxt_acquire_irq(data); |
dd24dcf5 | 2132 | if (error) |
068bdb67 | 2133 | return error; |
dd24dcf5 | 2134 | |
6cd1ab0f DT |
2135 | error = request_firmware_nowait(THIS_MODULE, true, MXT_CFG_NAME, |
2136 | &client->dev, GFP_KERNEL, data, | |
2137 | mxt_config_cb); | |
2138 | if (error) { | |
2139 | dev_err(&client->dev, "Failed to invoke firmware loader: %d\n", | |
2140 | error); | |
068bdb67 | 2141 | return error; |
6cd1ab0f | 2142 | } |
50a77c65 ND |
2143 | |
2144 | return 0; | |
50a77c65 ND |
2145 | } |
2146 | ||
7f3884f7 ND |
2147 | static int mxt_set_t7_power_cfg(struct mxt_data *data, u8 sleep) |
2148 | { | |
2149 | struct device *dev = &data->client->dev; | |
2150 | int error; | |
2151 | struct t7_config *new_config; | |
2152 | struct t7_config deepsleep = { .active = 0, .idle = 0 }; | |
2153 | ||
2154 | if (sleep == MXT_POWER_CFG_DEEPSLEEP) | |
2155 | new_config = &deepsleep; | |
2156 | else | |
2157 | new_config = &data->t7_cfg; | |
2158 | ||
2159 | error = __mxt_write_reg(data->client, data->T7_address, | |
2160 | sizeof(data->t7_cfg), new_config); | |
2161 | if (error) | |
2162 | return error; | |
2163 | ||
2164 | dev_dbg(dev, "Set T7 ACTV:%d IDLE:%d\n", | |
2165 | new_config->active, new_config->idle); | |
2166 | ||
2167 | return 0; | |
2168 | } | |
2169 | ||
2170 | static int mxt_init_t7_power_cfg(struct mxt_data *data) | |
2171 | { | |
2172 | struct device *dev = &data->client->dev; | |
2173 | int error; | |
2174 | bool retry = false; | |
2175 | ||
2176 | recheck: | |
2177 | error = __mxt_read_reg(data->client, data->T7_address, | |
2178 | sizeof(data->t7_cfg), &data->t7_cfg); | |
2179 | if (error) | |
2180 | return error; | |
2181 | ||
2182 | if (data->t7_cfg.active == 0 || data->t7_cfg.idle == 0) { | |
2183 | if (!retry) { | |
2184 | dev_dbg(dev, "T7 cfg zero, resetting\n"); | |
2185 | mxt_soft_reset(data); | |
2186 | retry = true; | |
2187 | goto recheck; | |
2188 | } else { | |
2189 | dev_dbg(dev, "T7 cfg zero after reset, overriding\n"); | |
2190 | data->t7_cfg.active = 20; | |
2191 | data->t7_cfg.idle = 100; | |
2192 | return mxt_set_t7_power_cfg(data, MXT_POWER_CFG_RUN); | |
2193 | } | |
2194 | } | |
2195 | ||
2196 | dev_dbg(dev, "Initialized power cfg: ACTV %d, IDLE %d\n", | |
2197 | data->t7_cfg.active, data->t7_cfg.idle); | |
2198 | return 0; | |
2199 | } | |
2200 | ||
d6a39404 ND |
2201 | #ifdef CONFIG_TOUCHSCREEN_ATMEL_MXT_T37 |
2202 | static u16 mxt_get_debug_value(struct mxt_data *data, unsigned int x, | |
2203 | unsigned int y) | |
2204 | { | |
068bdb67 | 2205 | struct mxt_info *info = data->info; |
d6a39404 ND |
2206 | struct mxt_dbg *dbg = &data->dbg; |
2207 | unsigned int ofs, page; | |
566d533a ND |
2208 | unsigned int col = 0; |
2209 | unsigned int col_width; | |
2210 | ||
2211 | if (info->family_id == MXT_FAMILY_1386) { | |
2212 | col_width = info->matrix_ysize / MXT1386_COLUMNS; | |
2213 | col = y / col_width; | |
2214 | y = y % col_width; | |
2215 | } else { | |
2216 | col_width = info->matrix_ysize; | |
2217 | } | |
d6a39404 | 2218 | |
566d533a | 2219 | ofs = (y + (x * col_width)) * sizeof(u16); |
d6a39404 ND |
2220 | page = ofs / MXT_DIAGNOSTIC_SIZE; |
2221 | ofs %= MXT_DIAGNOSTIC_SIZE; | |
2222 | ||
566d533a ND |
2223 | if (info->family_id == MXT_FAMILY_1386) |
2224 | page += col * MXT1386_PAGES_PER_COLUMN; | |
2225 | ||
d6a39404 ND |
2226 | return get_unaligned_le16(&dbg->t37_buf[page].data[ofs]); |
2227 | } | |
2228 | ||
2229 | static int mxt_convert_debug_pages(struct mxt_data *data, u16 *outbuf) | |
2230 | { | |
2231 | struct mxt_dbg *dbg = &data->dbg; | |
2232 | unsigned int x = 0; | |
2233 | unsigned int y = 0; | |
de601f71 | 2234 | unsigned int i, rx, ry; |
d6a39404 ND |
2235 | |
2236 | for (i = 0; i < dbg->t37_nodes; i++) { | |
de601f71 ND |
2237 | /* Handle orientation */ |
2238 | rx = data->xy_switch ? y : x; | |
2239 | ry = data->xy_switch ? x : y; | |
2240 | rx = data->invertx ? (data->xsize - 1 - rx) : rx; | |
2241 | ry = data->inverty ? (data->ysize - 1 - ry) : ry; | |
2242 | ||
2243 | outbuf[i] = mxt_get_debug_value(data, rx, ry); | |
d6a39404 ND |
2244 | |
2245 | /* Next value */ | |
de601f71 | 2246 | if (++x >= (data->xy_switch ? data->ysize : data->xsize)) { |
d6a39404 ND |
2247 | x = 0; |
2248 | y++; | |
2249 | } | |
2250 | } | |
2251 | ||
2252 | return 0; | |
2253 | } | |
2254 | ||
2255 | static int mxt_read_diagnostic_debug(struct mxt_data *data, u8 mode, | |
2256 | u16 *outbuf) | |
2257 | { | |
2258 | struct mxt_dbg *dbg = &data->dbg; | |
2259 | int retries = 0; | |
2260 | int page; | |
2261 | int ret; | |
2262 | u8 cmd = mode; | |
2263 | struct t37_debug *p; | |
2264 | u8 cmd_poll; | |
2265 | ||
2266 | for (page = 0; page < dbg->t37_pages; page++) { | |
2267 | p = dbg->t37_buf + page; | |
2268 | ||
2269 | ret = mxt_write_reg(data->client, dbg->diag_cmd_address, | |
2270 | cmd); | |
2271 | if (ret) | |
2272 | return ret; | |
2273 | ||
2274 | retries = 0; | |
2275 | msleep(20); | |
2276 | wait_cmd: | |
2277 | /* Read back command byte */ | |
2278 | ret = __mxt_read_reg(data->client, dbg->diag_cmd_address, | |
2279 | sizeof(cmd_poll), &cmd_poll); | |
2280 | if (ret) | |
2281 | return ret; | |
2282 | ||
2283 | /* Field is cleared once the command has been processed */ | |
2284 | if (cmd_poll) { | |
2285 | if (retries++ > 100) | |
2286 | return -EINVAL; | |
2287 | ||
2288 | msleep(20); | |
2289 | goto wait_cmd; | |
2290 | } | |
2291 | ||
2292 | /* Read T37 page */ | |
2293 | ret = __mxt_read_reg(data->client, dbg->t37_address, | |
2294 | sizeof(struct t37_debug), p); | |
2295 | if (ret) | |
2296 | return ret; | |
2297 | ||
2298 | if (p->mode != mode || p->page != page) { | |
2299 | dev_err(&data->client->dev, "T37 page mismatch\n"); | |
2300 | return -EINVAL; | |
2301 | } | |
2302 | ||
2303 | dev_dbg(&data->client->dev, "%s page:%d retries:%d\n", | |
2304 | __func__, page, retries); | |
2305 | ||
2306 | /* For remaining pages, write PAGEUP rather than mode */ | |
2307 | cmd = MXT_DIAGNOSTIC_PAGEUP; | |
2308 | } | |
2309 | ||
2310 | return mxt_convert_debug_pages(data, outbuf); | |
2311 | } | |
2312 | ||
ecfdd7e2 ND |
2313 | static int mxt_queue_setup(struct vb2_queue *q, |
2314 | unsigned int *nbuffers, unsigned int *nplanes, | |
2315 | unsigned int sizes[], struct device *alloc_devs[]) | |
2316 | { | |
2317 | struct mxt_data *data = q->drv_priv; | |
2318 | size_t size = data->dbg.t37_nodes * sizeof(u16); | |
2319 | ||
2320 | if (*nplanes) | |
2321 | return sizes[0] < size ? -EINVAL : 0; | |
2322 | ||
2323 | *nplanes = 1; | |
2324 | sizes[0] = size; | |
2325 | ||
2326 | return 0; | |
2327 | } | |
2328 | ||
2329 | static void mxt_buffer_queue(struct vb2_buffer *vb) | |
2330 | { | |
2331 | struct mxt_data *data = vb2_get_drv_priv(vb->vb2_queue); | |
2332 | u16 *ptr; | |
2333 | int ret; | |
06b3d3f3 | 2334 | u8 mode; |
ecfdd7e2 ND |
2335 | |
2336 | ptr = vb2_plane_vaddr(vb, 0); | |
2337 | if (!ptr) { | |
2338 | dev_err(&data->client->dev, "Error acquiring frame ptr\n"); | |
2339 | goto fault; | |
2340 | } | |
2341 | ||
06b3d3f3 ND |
2342 | switch (data->dbg.input) { |
2343 | case MXT_V4L_INPUT_DELTAS: | |
2344 | default: | |
2345 | mode = MXT_DIAGNOSTIC_DELTAS; | |
2346 | break; | |
2347 | ||
2348 | case MXT_V4L_INPUT_REFS: | |
2349 | mode = MXT_DIAGNOSTIC_REFS; | |
2350 | break; | |
2351 | } | |
2352 | ||
2353 | ret = mxt_read_diagnostic_debug(data, mode, ptr); | |
ecfdd7e2 ND |
2354 | if (ret) |
2355 | goto fault; | |
2356 | ||
2357 | vb2_set_plane_payload(vb, 0, data->dbg.t37_nodes * sizeof(u16)); | |
2358 | vb2_buffer_done(vb, VB2_BUF_STATE_DONE); | |
2359 | return; | |
2360 | ||
2361 | fault: | |
2362 | vb2_buffer_done(vb, VB2_BUF_STATE_ERROR); | |
2363 | } | |
2364 | ||
2365 | /* V4L2 structures */ | |
2366 | static const struct vb2_ops mxt_queue_ops = { | |
2367 | .queue_setup = mxt_queue_setup, | |
2368 | .buf_queue = mxt_buffer_queue, | |
2369 | .wait_prepare = vb2_ops_wait_prepare, | |
2370 | .wait_finish = vb2_ops_wait_finish, | |
2371 | }; | |
2372 | ||
2373 | static const struct vb2_queue mxt_queue = { | |
2374 | .type = V4L2_BUF_TYPE_VIDEO_CAPTURE, | |
2375 | .io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF | VB2_READ, | |
2376 | .buf_struct_size = sizeof(struct mxt_vb2_buffer), | |
2377 | .ops = &mxt_queue_ops, | |
2378 | .mem_ops = &vb2_vmalloc_memops, | |
2379 | .timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC, | |
2380 | .min_buffers_needed = 1, | |
2381 | }; | |
2382 | ||
2383 | static int mxt_vidioc_querycap(struct file *file, void *priv, | |
2384 | struct v4l2_capability *cap) | |
2385 | { | |
2386 | struct mxt_data *data = video_drvdata(file); | |
2387 | ||
2388 | strlcpy(cap->driver, "atmel_mxt_ts", sizeof(cap->driver)); | |
2389 | strlcpy(cap->card, "atmel_mxt_ts touch", sizeof(cap->card)); | |
2390 | snprintf(cap->bus_info, sizeof(cap->bus_info), | |
2391 | "I2C:%s", dev_name(&data->client->dev)); | |
2392 | return 0; | |
2393 | } | |
2394 | ||
2395 | static int mxt_vidioc_enum_input(struct file *file, void *priv, | |
2396 | struct v4l2_input *i) | |
2397 | { | |
06b3d3f3 | 2398 | if (i->index >= MXT_V4L_INPUT_MAX) |
ecfdd7e2 ND |
2399 | return -EINVAL; |
2400 | ||
2401 | i->type = V4L2_INPUT_TYPE_TOUCH; | |
06b3d3f3 ND |
2402 | |
2403 | switch (i->index) { | |
2404 | case MXT_V4L_INPUT_REFS: | |
2405 | strlcpy(i->name, "Mutual Capacitance References", | |
2406 | sizeof(i->name)); | |
2407 | break; | |
2408 | case MXT_V4L_INPUT_DELTAS: | |
2409 | strlcpy(i->name, "Mutual Capacitance Deltas", sizeof(i->name)); | |
2410 | break; | |
2411 | } | |
2412 | ||
ecfdd7e2 ND |
2413 | return 0; |
2414 | } | |
2415 | ||
2416 | static int mxt_set_input(struct mxt_data *data, unsigned int i) | |
2417 | { | |
2418 | struct v4l2_pix_format *f = &data->dbg.format; | |
2419 | ||
06b3d3f3 | 2420 | if (i >= MXT_V4L_INPUT_MAX) |
ecfdd7e2 ND |
2421 | return -EINVAL; |
2422 | ||
06b3d3f3 ND |
2423 | if (i == MXT_V4L_INPUT_DELTAS) |
2424 | f->pixelformat = V4L2_TCH_FMT_DELTA_TD16; | |
2425 | else | |
2426 | f->pixelformat = V4L2_TCH_FMT_TU16; | |
2427 | ||
de601f71 ND |
2428 | f->width = data->xy_switch ? data->ysize : data->xsize; |
2429 | f->height = data->xy_switch ? data->xsize : data->ysize; | |
ecfdd7e2 ND |
2430 | f->field = V4L2_FIELD_NONE; |
2431 | f->colorspace = V4L2_COLORSPACE_RAW; | |
2432 | f->bytesperline = f->width * sizeof(u16); | |
2433 | f->sizeimage = f->width * f->height * sizeof(u16); | |
2434 | ||
2435 | data->dbg.input = i; | |
2436 | ||
2437 | return 0; | |
2438 | } | |
2439 | ||
2440 | static int mxt_vidioc_s_input(struct file *file, void *priv, unsigned int i) | |
2441 | { | |
2442 | return mxt_set_input(video_drvdata(file), i); | |
2443 | } | |
2444 | ||
2445 | static int mxt_vidioc_g_input(struct file *file, void *priv, unsigned int *i) | |
2446 | { | |
2447 | struct mxt_data *data = video_drvdata(file); | |
2448 | ||
2449 | *i = data->dbg.input; | |
2450 | ||
2451 | return 0; | |
2452 | } | |
2453 | ||
2454 | static int mxt_vidioc_fmt(struct file *file, void *priv, struct v4l2_format *f) | |
2455 | { | |
2456 | struct mxt_data *data = video_drvdata(file); | |
2457 | ||
2458 | f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
2459 | f->fmt.pix = data->dbg.format; | |
2460 | ||
2461 | return 0; | |
2462 | } | |
2463 | ||
2464 | static int mxt_vidioc_enum_fmt(struct file *file, void *priv, | |
2465 | struct v4l2_fmtdesc *fmt) | |
2466 | { | |
2467 | if (fmt->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
2468 | return -EINVAL; | |
2469 | ||
06b3d3f3 ND |
2470 | switch (fmt->index) { |
2471 | case 0: | |
2472 | fmt->pixelformat = V4L2_TCH_FMT_TU16; | |
2473 | break; | |
2474 | ||
2475 | case 1: | |
2476 | fmt->pixelformat = V4L2_TCH_FMT_DELTA_TD16; | |
2477 | break; | |
2478 | ||
2479 | default: | |
2480 | return -EINVAL; | |
2481 | } | |
2482 | ||
ecfdd7e2 ND |
2483 | return 0; |
2484 | } | |
2485 | ||
2486 | static int mxt_vidioc_g_parm(struct file *file, void *fh, | |
2487 | struct v4l2_streamparm *a) | |
2488 | { | |
2489 | if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
2490 | return -EINVAL; | |
2491 | ||
2492 | a->parm.capture.readbuffers = 1; | |
2493 | a->parm.capture.timeperframe.numerator = 1; | |
2494 | a->parm.capture.timeperframe.denominator = 10; | |
2495 | return 0; | |
2496 | } | |
2497 | ||
2498 | static const struct v4l2_ioctl_ops mxt_video_ioctl_ops = { | |
2499 | .vidioc_querycap = mxt_vidioc_querycap, | |
2500 | ||
2501 | .vidioc_enum_fmt_vid_cap = mxt_vidioc_enum_fmt, | |
2502 | .vidioc_s_fmt_vid_cap = mxt_vidioc_fmt, | |
2503 | .vidioc_g_fmt_vid_cap = mxt_vidioc_fmt, | |
2504 | .vidioc_try_fmt_vid_cap = mxt_vidioc_fmt, | |
2505 | .vidioc_g_parm = mxt_vidioc_g_parm, | |
2506 | ||
2507 | .vidioc_enum_input = mxt_vidioc_enum_input, | |
2508 | .vidioc_g_input = mxt_vidioc_g_input, | |
2509 | .vidioc_s_input = mxt_vidioc_s_input, | |
2510 | ||
2511 | .vidioc_reqbufs = vb2_ioctl_reqbufs, | |
2512 | .vidioc_create_bufs = vb2_ioctl_create_bufs, | |
2513 | .vidioc_querybuf = vb2_ioctl_querybuf, | |
2514 | .vidioc_qbuf = vb2_ioctl_qbuf, | |
2515 | .vidioc_dqbuf = vb2_ioctl_dqbuf, | |
2516 | .vidioc_expbuf = vb2_ioctl_expbuf, | |
2517 | ||
2518 | .vidioc_streamon = vb2_ioctl_streamon, | |
2519 | .vidioc_streamoff = vb2_ioctl_streamoff, | |
2520 | }; | |
2521 | ||
2522 | static const struct video_device mxt_video_device = { | |
2523 | .name = "Atmel maxTouch", | |
2524 | .fops = &mxt_video_fops, | |
2525 | .ioctl_ops = &mxt_video_ioctl_ops, | |
2526 | .release = video_device_release_empty, | |
2527 | .device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_TOUCH | | |
2528 | V4L2_CAP_READWRITE | V4L2_CAP_STREAMING, | |
2529 | }; | |
2530 | ||
d6a39404 ND |
2531 | static void mxt_debug_init(struct mxt_data *data) |
2532 | { | |
068bdb67 | 2533 | struct mxt_info *info = data->info; |
d6a39404 ND |
2534 | struct mxt_dbg *dbg = &data->dbg; |
2535 | struct mxt_object *object; | |
ecfdd7e2 | 2536 | int error; |
d6a39404 ND |
2537 | |
2538 | object = mxt_get_object(data, MXT_GEN_COMMAND_T6); | |
2539 | if (!object) | |
2540 | goto error; | |
2541 | ||
2542 | dbg->diag_cmd_address = object->start_address + MXT_COMMAND_DIAGNOSTIC; | |
2543 | ||
2544 | object = mxt_get_object(data, MXT_DEBUG_DIAGNOSTIC_T37); | |
2545 | if (!object) | |
2546 | goto error; | |
2547 | ||
2548 | if (mxt_obj_size(object) != sizeof(struct t37_debug)) { | |
2549 | dev_warn(&data->client->dev, "Bad T37 size"); | |
2550 | goto error; | |
2551 | } | |
2552 | ||
2553 | dbg->t37_address = object->start_address; | |
2554 | ||
2555 | /* Calculate size of data and allocate buffer */ | |
2786489f | 2556 | dbg->t37_nodes = data->xsize * data->ysize; |
566d533a ND |
2557 | |
2558 | if (info->family_id == MXT_FAMILY_1386) | |
2559 | dbg->t37_pages = MXT1386_COLUMNS * MXT1386_PAGES_PER_COLUMN; | |
2560 | else | |
2561 | dbg->t37_pages = DIV_ROUND_UP(data->xsize * | |
d7ddf154 | 2562 | info->matrix_ysize * |
566d533a ND |
2563 | sizeof(u16), |
2564 | sizeof(dbg->t37_buf->data)); | |
d6a39404 ND |
2565 | |
2566 | dbg->t37_buf = devm_kmalloc_array(&data->client->dev, dbg->t37_pages, | |
2567 | sizeof(struct t37_debug), GFP_KERNEL); | |
2568 | if (!dbg->t37_buf) | |
2569 | goto error; | |
2570 | ||
ecfdd7e2 ND |
2571 | /* init channel to zero */ |
2572 | mxt_set_input(data, 0); | |
2573 | ||
2574 | /* register video device */ | |
2575 | snprintf(dbg->v4l2.name, sizeof(dbg->v4l2.name), "%s", "atmel_mxt_ts"); | |
2576 | error = v4l2_device_register(&data->client->dev, &dbg->v4l2); | |
2577 | if (error) | |
2578 | goto error; | |
2579 | ||
2580 | /* initialize the queue */ | |
2581 | mutex_init(&dbg->lock); | |
2582 | dbg->queue = mxt_queue; | |
2583 | dbg->queue.drv_priv = data; | |
2584 | dbg->queue.lock = &dbg->lock; | |
2585 | dbg->queue.dev = &data->client->dev; | |
2586 | ||
2587 | error = vb2_queue_init(&dbg->queue); | |
2588 | if (error) | |
2589 | goto error_unreg_v4l2; | |
2590 | ||
2591 | dbg->vdev = mxt_video_device; | |
2592 | dbg->vdev.v4l2_dev = &dbg->v4l2; | |
2593 | dbg->vdev.lock = &dbg->lock; | |
2594 | dbg->vdev.vfl_dir = VFL_DIR_RX; | |
2595 | dbg->vdev.queue = &dbg->queue; | |
2596 | video_set_drvdata(&dbg->vdev, data); | |
2597 | ||
2598 | error = video_register_device(&dbg->vdev, VFL_TYPE_TOUCH, -1); | |
2599 | if (error) | |
2600 | goto error_unreg_v4l2; | |
2601 | ||
d6a39404 ND |
2602 | return; |
2603 | ||
ecfdd7e2 ND |
2604 | error_unreg_v4l2: |
2605 | v4l2_device_unregister(&dbg->v4l2); | |
d6a39404 ND |
2606 | error: |
2607 | dev_warn(&data->client->dev, "Error initializing T37\n"); | |
2608 | } | |
2609 | #else | |
2610 | static void mxt_debug_init(struct mxt_data *data) | |
2611 | { | |
2612 | } | |
2613 | #endif | |
2614 | ||
50a77c65 ND |
2615 | static int mxt_configure_objects(struct mxt_data *data, |
2616 | const struct firmware *cfg) | |
2617 | { | |
2618 | struct device *dev = &data->client->dev; | |
50a77c65 ND |
2619 | int error; |
2620 | ||
7f3884f7 ND |
2621 | error = mxt_init_t7_power_cfg(data); |
2622 | if (error) { | |
2623 | dev_err(dev, "Failed to initialize power cfg\n"); | |
2624 | return error; | |
2625 | } | |
2626 | ||
50a77c65 ND |
2627 | if (cfg) { |
2628 | error = mxt_update_cfg(data, cfg); | |
2629 | if (error) | |
2630 | dev_warn(dev, "Error %d updating config\n", error); | |
7bed6805 | 2631 | } |
4cf51c38 | 2632 | |
b23157dc ND |
2633 | if (data->multitouch) { |
2634 | error = mxt_initialize_input_device(data); | |
2635 | if (error) | |
2636 | return error; | |
2637 | } else { | |
2638 | dev_warn(dev, "No touch object detected\n"); | |
2639 | } | |
4cf51c38 | 2640 | |
d6a39404 ND |
2641 | mxt_debug_init(data); |
2642 | ||
4cf51c38 JS |
2643 | return 0; |
2644 | } | |
2645 | ||
b19fc9ec DK |
2646 | /* Firmware Version is returned as Major.Minor.Build */ |
2647 | static ssize_t mxt_fw_version_show(struct device *dev, | |
2648 | struct device_attribute *attr, char *buf) | |
2649 | { | |
2650 | struct mxt_data *data = dev_get_drvdata(dev); | |
068bdb67 | 2651 | struct mxt_info *info = data->info; |
b19fc9ec DK |
2652 | return scnprintf(buf, PAGE_SIZE, "%u.%u.%02X\n", |
2653 | info->version >> 4, info->version & 0xf, info->build); | |
2654 | } | |
2655 | ||
2656 | /* Hardware Version is returned as FamilyID.VariantID */ | |
2657 | static ssize_t mxt_hw_version_show(struct device *dev, | |
2658 | struct device_attribute *attr, char *buf) | |
2659 | { | |
2660 | struct mxt_data *data = dev_get_drvdata(dev); | |
068bdb67 | 2661 | struct mxt_info *info = data->info; |
b19fc9ec DK |
2662 | return scnprintf(buf, PAGE_SIZE, "%u.%u\n", |
2663 | info->family_id, info->variant_id); | |
2664 | } | |
2665 | ||
794eb67e DK |
2666 | static ssize_t mxt_show_instance(char *buf, int count, |
2667 | struct mxt_object *object, int instance, | |
2668 | const u8 *val) | |
2669 | { | |
2670 | int i; | |
2671 | ||
1e0c0c5b | 2672 | if (mxt_obj_instances(object) > 1) |
794eb67e DK |
2673 | count += scnprintf(buf + count, PAGE_SIZE - count, |
2674 | "Instance %u\n", instance); | |
2675 | ||
1e0c0c5b | 2676 | for (i = 0; i < mxt_obj_size(object); i++) |
794eb67e DK |
2677 | count += scnprintf(buf + count, PAGE_SIZE - count, |
2678 | "\t[%2u]: %02x (%d)\n", i, val[i], val[i]); | |
2679 | count += scnprintf(buf + count, PAGE_SIZE - count, "\n"); | |
2680 | ||
2681 | return count; | |
2682 | } | |
2683 | ||
7686b108 | 2684 | static ssize_t mxt_object_show(struct device *dev, |
4cf51c38 JS |
2685 | struct device_attribute *attr, char *buf) |
2686 | { | |
7686b108 IV |
2687 | struct mxt_data *data = dev_get_drvdata(dev); |
2688 | struct mxt_object *object; | |
4cf51c38 JS |
2689 | int count = 0; |
2690 | int i, j; | |
2691 | int error; | |
43a91d51 | 2692 | u8 *obuf; |
4cf51c38 | 2693 | |
43a91d51 DK |
2694 | /* Pre-allocate buffer large enough to hold max sized object. */ |
2695 | obuf = kmalloc(256, GFP_KERNEL); | |
2696 | if (!obuf) | |
2697 | return -ENOMEM; | |
4cf51c38 | 2698 | |
43a91d51 | 2699 | error = 0; |
068bdb67 | 2700 | for (i = 0; i < data->info->object_num; i++) { |
4cf51c38 JS |
2701 | object = data->object_table + i; |
2702 | ||
91630955 | 2703 | if (!mxt_object_readable(object->type)) |
4cf51c38 | 2704 | continue; |
4cf51c38 | 2705 | |
91630955 DK |
2706 | count += scnprintf(buf + count, PAGE_SIZE - count, |
2707 | "T%u:\n", object->type); | |
4cf51c38 | 2708 | |
1e0c0c5b DK |
2709 | for (j = 0; j < mxt_obj_instances(object); j++) { |
2710 | u16 size = mxt_obj_size(object); | |
794eb67e | 2711 | u16 addr = object->start_address + j * size; |
43a91d51 | 2712 | |
794eb67e | 2713 | error = __mxt_read_reg(data->client, addr, size, obuf); |
4cf51c38 | 2714 | if (error) |
794eb67e | 2715 | goto done; |
4cf51c38 | 2716 | |
794eb67e | 2717 | count = mxt_show_instance(buf, count, object, j, obuf); |
4cf51c38 | 2718 | } |
4cf51c38 JS |
2719 | } |
2720 | ||
794eb67e | 2721 | done: |
43a91d51 DK |
2722 | kfree(obuf); |
2723 | return error ?: count; | |
4cf51c38 JS |
2724 | } |
2725 | ||
f2ac6cb9 ND |
2726 | static int mxt_check_firmware_format(struct device *dev, |
2727 | const struct firmware *fw) | |
2728 | { | |
2729 | unsigned int pos = 0; | |
2730 | char c; | |
2731 | ||
2732 | while (pos < fw->size) { | |
2733 | c = *(fw->data + pos); | |
2734 | ||
2735 | if (c < '0' || (c > '9' && c < 'A') || c > 'F') | |
2736 | return 0; | |
2737 | ||
2738 | pos++; | |
2739 | } | |
2740 | ||
2741 | /* | |
2742 | * To convert file try: | |
2743 | * xxd -r -p mXTXXX__APP_VX-X-XX.enc > maxtouch.fw | |
2744 | */ | |
2745 | dev_err(dev, "Aborting: firmware file must be in binary format\n"); | |
2746 | ||
2747 | return -EINVAL; | |
2748 | } | |
2749 | ||
7686b108 | 2750 | static int mxt_load_fw(struct device *dev, const char *fn) |
4cf51c38 | 2751 | { |
7686b108 | 2752 | struct mxt_data *data = dev_get_drvdata(dev); |
4cf51c38 JS |
2753 | const struct firmware *fw = NULL; |
2754 | unsigned int frame_size; | |
2755 | unsigned int pos = 0; | |
f943c74a | 2756 | unsigned int retry = 0; |
f477c758 | 2757 | unsigned int frame = 0; |
4cf51c38 JS |
2758 | int ret; |
2759 | ||
2760 | ret = request_firmware(&fw, fn, dev); | |
2761 | if (ret) { | |
2762 | dev_err(dev, "Unable to open firmware %s\n", fn); | |
2763 | return ret; | |
2764 | } | |
2765 | ||
f2ac6cb9 ND |
2766 | /* Check for incorrect enc file */ |
2767 | ret = mxt_check_firmware_format(dev, fw); | |
2768 | if (ret) | |
2769 | goto release_firmware; | |
2770 | ||
a9fdd1e6 ND |
2771 | if (!data->in_bootloader) { |
2772 | /* Change to the bootloader mode */ | |
2773 | data->in_bootloader = true; | |
d79e7e47 | 2774 | |
a9fdd1e6 ND |
2775 | ret = mxt_t6_command(data, MXT_COMMAND_RESET, |
2776 | MXT_BOOT_VALUE, false); | |
2777 | if (ret) | |
2778 | goto release_firmware; | |
a4a2ef46 | 2779 | |
a9fdd1e6 | 2780 | msleep(MXT_RESET_TIME); |
8efaa5e5 ND |
2781 | |
2782 | /* Do not need to scan since we know family ID */ | |
2783 | ret = mxt_lookup_bootloader_address(data, 0); | |
2784 | if (ret) | |
2785 | goto release_firmware; | |
58e4aeee SW |
2786 | |
2787 | mxt_free_input_device(data); | |
2788 | mxt_free_object_table(data); | |
8efaa5e5 ND |
2789 | } else { |
2790 | enable_irq(data->irq); | |
a9fdd1e6 | 2791 | } |
4cf51c38 | 2792 | |
d79e7e47 BL |
2793 | reinit_completion(&data->bl_completion); |
2794 | ||
385deb96 ND |
2795 | ret = mxt_check_bootloader(data, MXT_WAITING_BOOTLOAD_CMD, false); |
2796 | if (ret) { | |
2797 | /* Bootloader may still be unlocked from previous attempt */ | |
2798 | ret = mxt_check_bootloader(data, MXT_WAITING_FRAME_DATA, false); | |
2799 | if (ret) | |
2800 | goto disable_irq; | |
2801 | } else { | |
2802 | dev_info(dev, "Unlocking bootloader\n"); | |
4cf51c38 | 2803 | |
385deb96 | 2804 | /* Unlock bootloader */ |
8efaa5e5 | 2805 | ret = mxt_send_bootloader_cmd(data, true); |
385deb96 ND |
2806 | if (ret) |
2807 | goto disable_irq; | |
2808 | } | |
4cf51c38 JS |
2809 | |
2810 | while (pos < fw->size) { | |
385deb96 | 2811 | ret = mxt_check_bootloader(data, MXT_WAITING_FRAME_DATA, true); |
4cf51c38 | 2812 | if (ret) |
d79e7e47 | 2813 | goto disable_irq; |
4cf51c38 JS |
2814 | |
2815 | frame_size = ((*(fw->data + pos) << 8) | *(fw->data + pos + 1)); | |
2816 | ||
f943c74a | 2817 | /* Take account of CRC bytes */ |
4cf51c38 JS |
2818 | frame_size += 2; |
2819 | ||
2820 | /* Write one frame to device */ | |
f28a842d ND |
2821 | ret = mxt_bootloader_write(data, fw->data + pos, frame_size); |
2822 | if (ret) | |
2823 | goto disable_irq; | |
4cf51c38 | 2824 | |
385deb96 | 2825 | ret = mxt_check_bootloader(data, MXT_FRAME_CRC_PASS, true); |
f943c74a ND |
2826 | if (ret) { |
2827 | retry++; | |
2828 | ||
2829 | /* Back off by 20ms per retry */ | |
2830 | msleep(retry * 20); | |
4cf51c38 | 2831 | |
f943c74a ND |
2832 | if (retry > 20) { |
2833 | dev_err(dev, "Retry count exceeded\n"); | |
2834 | goto disable_irq; | |
2835 | } | |
2836 | } else { | |
2837 | retry = 0; | |
2838 | pos += frame_size; | |
f477c758 | 2839 | frame++; |
f943c74a | 2840 | } |
4cf51c38 | 2841 | |
f477c758 ND |
2842 | if (frame % 50 == 0) |
2843 | dev_dbg(dev, "Sent %d frames, %d/%zd bytes\n", | |
2844 | frame, pos, fw->size); | |
4cf51c38 JS |
2845 | } |
2846 | ||
a0434b75 | 2847 | /* Wait for flash. */ |
a4a2ef46 IV |
2848 | ret = mxt_wait_for_completion(data, &data->bl_completion, |
2849 | MXT_FW_RESET_TIME); | |
a0434b75 BL |
2850 | if (ret) |
2851 | goto disable_irq; | |
2852 | ||
f477c758 ND |
2853 | dev_dbg(dev, "Sent %d frames, %d bytes\n", frame, pos); |
2854 | ||
a0434b75 BL |
2855 | /* |
2856 | * Wait for device to reset. Some bootloader versions do not assert | |
2857 | * the CHG line after bootloading has finished, so ignore potential | |
2858 | * errors. | |
2859 | */ | |
a4a2ef46 | 2860 | mxt_wait_for_completion(data, &data->bl_completion, MXT_FW_RESET_TIME); |
a0434b75 | 2861 | |
d79e7e47 BL |
2862 | data->in_bootloader = false; |
2863 | ||
2864 | disable_irq: | |
2865 | disable_irq(data->irq); | |
a4a2ef46 | 2866 | release_firmware: |
4cf51c38 | 2867 | release_firmware(fw); |
4cf51c38 JS |
2868 | return ret; |
2869 | } | |
2870 | ||
7686b108 | 2871 | static ssize_t mxt_update_fw_store(struct device *dev, |
4cf51c38 JS |
2872 | struct device_attribute *attr, |
2873 | const char *buf, size_t count) | |
2874 | { | |
7686b108 | 2875 | struct mxt_data *data = dev_get_drvdata(dev); |
4cf51c38 JS |
2876 | int error; |
2877 | ||
7686b108 | 2878 | error = mxt_load_fw(dev, MXT_FW_NAME); |
4cf51c38 JS |
2879 | if (error) { |
2880 | dev_err(dev, "The firmware update failed(%d)\n", error); | |
2881 | count = error; | |
2882 | } else { | |
7bed6805 ND |
2883 | dev_info(dev, "The firmware update succeeded\n"); |
2884 | ||
dd24dcf5 | 2885 | error = mxt_initialize(data); |
d79e7e47 BL |
2886 | if (error) |
2887 | return error; | |
2888 | } | |
08960a07 | 2889 | |
4cf51c38 JS |
2890 | return count; |
2891 | } | |
2892 | ||
b19fc9ec DK |
2893 | static DEVICE_ATTR(fw_version, S_IRUGO, mxt_fw_version_show, NULL); |
2894 | static DEVICE_ATTR(hw_version, S_IRUGO, mxt_hw_version_show, NULL); | |
71b3e938 DK |
2895 | static DEVICE_ATTR(object, S_IRUGO, mxt_object_show, NULL); |
2896 | static DEVICE_ATTR(update_fw, S_IWUSR, NULL, mxt_update_fw_store); | |
4cf51c38 | 2897 | |
7686b108 | 2898 | static struct attribute *mxt_attrs[] = { |
b19fc9ec DK |
2899 | &dev_attr_fw_version.attr, |
2900 | &dev_attr_hw_version.attr, | |
4cf51c38 JS |
2901 | &dev_attr_object.attr, |
2902 | &dev_attr_update_fw.attr, | |
2903 | NULL | |
2904 | }; | |
2905 | ||
7686b108 IV |
2906 | static const struct attribute_group mxt_attr_group = { |
2907 | .attrs = mxt_attrs, | |
4cf51c38 JS |
2908 | }; |
2909 | ||
7686b108 | 2910 | static void mxt_start(struct mxt_data *data) |
4cf51c38 | 2911 | { |
d80808e1 | 2912 | switch (data->suspend_mode) { |
7f3884f7 ND |
2913 | case MXT_SUSPEND_T9_CTRL: |
2914 | mxt_soft_reset(data); | |
2915 | ||
2916 | /* Touch enable */ | |
2917 | /* 0x83 = SCANEN | RPTEN | ENABLE */ | |
2918 | mxt_write_object(data, | |
2919 | MXT_TOUCH_MULTI_T9, MXT_T9_CTRL, 0x83); | |
2920 | break; | |
2921 | ||
2922 | case MXT_SUSPEND_DEEP_SLEEP: | |
2923 | default: | |
2924 | mxt_set_t7_power_cfg(data, MXT_POWER_CFG_RUN); | |
2925 | ||
2926 | /* Recalibrate since chip has been in deep sleep */ | |
2927 | mxt_t6_command(data, MXT_COMMAND_CALIBRATE, 1, false); | |
2928 | break; | |
2929 | } | |
4cf51c38 JS |
2930 | } |
2931 | ||
7686b108 | 2932 | static void mxt_stop(struct mxt_data *data) |
4cf51c38 | 2933 | { |
d80808e1 | 2934 | switch (data->suspend_mode) { |
7f3884f7 ND |
2935 | case MXT_SUSPEND_T9_CTRL: |
2936 | /* Touch disable */ | |
2937 | mxt_write_object(data, | |
2938 | MXT_TOUCH_MULTI_T9, MXT_T9_CTRL, 0); | |
2939 | break; | |
2940 | ||
2941 | case MXT_SUSPEND_DEEP_SLEEP: | |
2942 | default: | |
2943 | mxt_set_t7_power_cfg(data, MXT_POWER_CFG_DEEPSLEEP); | |
2944 | break; | |
2945 | } | |
4cf51c38 JS |
2946 | } |
2947 | ||
7686b108 | 2948 | static int mxt_input_open(struct input_dev *dev) |
4cf51c38 | 2949 | { |
7686b108 | 2950 | struct mxt_data *data = input_get_drvdata(dev); |
4cf51c38 | 2951 | |
7686b108 | 2952 | mxt_start(data); |
4cf51c38 JS |
2953 | |
2954 | return 0; | |
2955 | } | |
2956 | ||
7686b108 | 2957 | static void mxt_input_close(struct input_dev *dev) |
4cf51c38 | 2958 | { |
7686b108 | 2959 | struct mxt_data *data = input_get_drvdata(dev); |
4cf51c38 | 2960 | |
7686b108 | 2961 | mxt_stop(data); |
4cf51c38 JS |
2962 | } |
2963 | ||
96a938aa | 2964 | static int mxt_parse_device_properties(struct mxt_data *data) |
78188be3 | 2965 | { |
93afb1d6 | 2966 | static const char keymap_property[] = "linux,gpio-keymap"; |
96a938aa | 2967 | struct device *dev = &data->client->dev; |
78188be3 | 2968 | u32 *keymap; |
93afb1d6 DT |
2969 | int n_keys; |
2970 | int error; | |
78188be3 | 2971 | |
96a938aa DT |
2972 | if (device_property_present(dev, keymap_property)) { |
2973 | n_keys = device_property_read_u32_array(dev, keymap_property, | |
93afb1d6 DT |
2974 | NULL, 0); |
2975 | if (n_keys <= 0) { | |
2976 | error = n_keys < 0 ? n_keys : -EINVAL; | |
96a938aa | 2977 | dev_err(dev, "invalid/malformed '%s' property: %d\n", |
93afb1d6 | 2978 | keymap_property, error); |
96a938aa | 2979 | return error; |
93afb1d6 | 2980 | } |
78188be3 | 2981 | |
96a938aa | 2982 | keymap = devm_kmalloc_array(dev, n_keys, sizeof(*keymap), |
93afb1d6 | 2983 | GFP_KERNEL); |
78188be3 | 2984 | if (!keymap) |
96a938aa | 2985 | return -ENOMEM; |
78188be3 | 2986 | |
96a938aa | 2987 | error = device_property_read_u32_array(dev, keymap_property, |
93afb1d6 DT |
2988 | keymap, n_keys); |
2989 | if (error) { | |
96a938aa | 2990 | dev_err(dev, "failed to parse '%s' property: %d\n", |
93afb1d6 | 2991 | keymap_property, error); |
96a938aa | 2992 | return error; |
93afb1d6 | 2993 | } |
78188be3 | 2994 | |
96a938aa DT |
2995 | data->t19_keymap = keymap; |
2996 | data->t19_num_keys = n_keys; | |
78188be3 SW |
2997 | } |
2998 | ||
96a938aa | 2999 | return 0; |
78188be3 | 3000 | } |
4f8d8088 DT |
3001 | |
3002 | #ifdef CONFIG_ACPI | |
3003 | ||
3004 | struct mxt_acpi_platform_data { | |
3005 | const char *hid; | |
d3f810ce | 3006 | const struct property_entry *props; |
4f8d8088 DT |
3007 | }; |
3008 | ||
3009 | static unsigned int samus_touchpad_buttons[] = { | |
3010 | KEY_RESERVED, | |
3011 | KEY_RESERVED, | |
3012 | KEY_RESERVED, | |
3013 | BTN_LEFT | |
3014 | }; | |
3015 | ||
d3f810ce DT |
3016 | static const struct property_entry samus_touchpad_props[] = { |
3017 | PROPERTY_ENTRY_U32_ARRAY("linux,gpio-keymap", samus_touchpad_buttons), | |
3018 | { } | |
3019 | }; | |
3020 | ||
4f8d8088 DT |
3021 | static struct mxt_acpi_platform_data samus_platform_data[] = { |
3022 | { | |
3023 | /* Touchpad */ | |
3024 | .hid = "ATML0000", | |
d3f810ce | 3025 | .props = samus_touchpad_props, |
4f8d8088 DT |
3026 | }, |
3027 | { | |
3028 | /* Touchscreen */ | |
3029 | .hid = "ATML0001", | |
3030 | }, | |
3031 | { } | |
3032 | }; | |
3033 | ||
c67566c6 DT |
3034 | static unsigned int chromebook_tp_buttons[] = { |
3035 | KEY_RESERVED, | |
3036 | KEY_RESERVED, | |
3037 | KEY_RESERVED, | |
3038 | KEY_RESERVED, | |
3039 | KEY_RESERVED, | |
3040 | BTN_LEFT | |
3041 | }; | |
3042 | ||
d3f810ce DT |
3043 | static const struct property_entry chromebook_tp_props[] = { |
3044 | PROPERTY_ENTRY_U32_ARRAY("linux,gpio-keymap", chromebook_tp_buttons), | |
3045 | { } | |
3046 | }; | |
3047 | ||
c67566c6 DT |
3048 | static struct mxt_acpi_platform_data chromebook_platform_data[] = { |
3049 | { | |
3050 | /* Touchpad */ | |
3051 | .hid = "ATML0000", | |
d3f810ce | 3052 | .props = chromebook_tp_props, |
c67566c6 DT |
3053 | }, |
3054 | { | |
3055 | /* Touchscreen */ | |
3056 | .hid = "ATML0001", | |
3057 | }, | |
3058 | { } | |
3059 | }; | |
3060 | ||
4f8d8088 DT |
3061 | static const struct dmi_system_id mxt_dmi_table[] = { |
3062 | { | |
3063 | /* 2015 Google Pixel */ | |
3064 | .ident = "Chromebook Pixel 2", | |
3065 | .matches = { | |
3066 | DMI_MATCH(DMI_SYS_VENDOR, "GOOGLE"), | |
3067 | DMI_MATCH(DMI_PRODUCT_NAME, "Samus"), | |
3068 | }, | |
3069 | .driver_data = samus_platform_data, | |
3070 | }, | |
f372b811 VGV |
3071 | { |
3072 | /* Samsung Chromebook Pro */ | |
3073 | .ident = "Samsung Chromebook Pro", | |
3074 | .matches = { | |
3075 | DMI_MATCH(DMI_SYS_VENDOR, "Google"), | |
3076 | DMI_MATCH(DMI_PRODUCT_NAME, "Caroline"), | |
3077 | }, | |
3078 | .driver_data = samus_platform_data, | |
3079 | }, | |
c67566c6 DT |
3080 | { |
3081 | /* Other Google Chromebooks */ | |
3082 | .ident = "Chromebook", | |
3083 | .matches = { | |
3084 | DMI_MATCH(DMI_SYS_VENDOR, "GOOGLE"), | |
3085 | }, | |
3086 | .driver_data = chromebook_platform_data, | |
3087 | }, | |
4f8d8088 DT |
3088 | { } |
3089 | }; | |
3090 | ||
96a938aa | 3091 | static int mxt_prepare_acpi_properties(struct i2c_client *client) |
4f8d8088 DT |
3092 | { |
3093 | struct acpi_device *adev; | |
3094 | const struct dmi_system_id *system_id; | |
3095 | const struct mxt_acpi_platform_data *acpi_pdata; | |
3096 | ||
4f8d8088 DT |
3097 | adev = ACPI_COMPANION(&client->dev); |
3098 | if (!adev) | |
d3f810ce | 3099 | return -ENOENT; |
4f8d8088 DT |
3100 | |
3101 | system_id = dmi_first_match(mxt_dmi_table); | |
3102 | if (!system_id) | |
d3f810ce | 3103 | return -ENOENT; |
4f8d8088 DT |
3104 | |
3105 | acpi_pdata = system_id->driver_data; | |
3106 | if (!acpi_pdata) | |
d3f810ce | 3107 | return -ENOENT; |
4f8d8088 DT |
3108 | |
3109 | while (acpi_pdata->hid) { | |
d3f810ce DT |
3110 | if (!strcmp(acpi_device_hid(adev), acpi_pdata->hid)) { |
3111 | /* | |
3112 | * Remove previously installed properties if we | |
3113 | * are probing this device not for the very first | |
3114 | * time. | |
3115 | */ | |
3116 | device_remove_properties(&client->dev); | |
3117 | ||
3118 | /* | |
3119 | * Now install the platform-specific properties | |
3120 | * that are missing from ACPI. | |
3121 | */ | |
3122 | device_add_properties(&client->dev, acpi_pdata->props); | |
3123 | break; | |
3124 | } | |
4f8d8088 DT |
3125 | |
3126 | acpi_pdata++; | |
3127 | } | |
3128 | ||
d3f810ce | 3129 | return 0; |
4f8d8088 DT |
3130 | } |
3131 | #else | |
96a938aa | 3132 | static int mxt_prepare_acpi_properties(struct i2c_client *client) |
4f8d8088 | 3133 | { |
d3f810ce | 3134 | return -ENOENT; |
78188be3 SW |
3135 | } |
3136 | #endif | |
3137 | ||
d80808e1 DT |
3138 | static const struct dmi_system_id chromebook_T9_suspend_dmi[] = { |
3139 | { | |
3140 | .matches = { | |
3141 | DMI_MATCH(DMI_SYS_VENDOR, "GOOGLE"), | |
3142 | DMI_MATCH(DMI_PRODUCT_NAME, "Link"), | |
3143 | }, | |
3144 | }, | |
3145 | { | |
3146 | .matches = { | |
3147 | DMI_MATCH(DMI_PRODUCT_NAME, "Peppy"), | |
3148 | }, | |
3149 | }, | |
3150 | { } | |
3151 | }; | |
3152 | ||
78188be3 | 3153 | static int mxt_probe(struct i2c_client *client, const struct i2c_device_id *id) |
4cf51c38 | 3154 | { |
7686b108 | 3155 | struct mxt_data *data; |
4cf51c38 JS |
3156 | int error; |
3157 | ||
96a938aa DT |
3158 | /* |
3159 | * Ignore ACPI devices representing bootloader mode. | |
3160 | * | |
3161 | * This is a bit of a hack: Google Chromebook BIOS creates ACPI | |
3162 | * devices for both application and bootloader modes, but we are | |
3163 | * interested in application mode only (if device is in bootloader | |
3164 | * mode we'll end up switching into application anyway). So far | |
3165 | * application mode addresses were all above 0x40, so we'll use it | |
3166 | * as a threshold. | |
3167 | */ | |
3168 | if (ACPI_COMPANION(&client->dev) && client->addr < 0x40) | |
3169 | return -ENXIO; | |
4cf51c38 | 3170 | |
8cc8446b SR |
3171 | data = devm_kzalloc(&client->dev, sizeof(struct mxt_data), GFP_KERNEL); |
3172 | if (!data) | |
7a53d609 | 3173 | return -ENOMEM; |
4cf51c38 | 3174 | |
ec02ac2b DK |
3175 | snprintf(data->phys, sizeof(data->phys), "i2c-%u-%04x/input0", |
3176 | client->adapter->nr, client->addr); | |
22dfab7f | 3177 | |
910d8051 | 3178 | data->client = client; |
910d8051 | 3179 | data->irq = client->irq; |
7a53d609 | 3180 | i2c_set_clientdata(client, data); |
910d8051 | 3181 | |
d79e7e47 | 3182 | init_completion(&data->bl_completion); |
a4a2ef46 | 3183 | init_completion(&data->reset_completion); |
c3f78043 | 3184 | init_completion(&data->crc_completion); |
d79e7e47 | 3185 | |
d80808e1 DT |
3186 | data->suspend_mode = dmi_check_system(chromebook_T9_suspend_dmi) ? |
3187 | MXT_SUSPEND_T9_CTRL : MXT_SUSPEND_DEEP_SLEEP; | |
3188 | ||
96a938aa DT |
3189 | error = mxt_prepare_acpi_properties(client); |
3190 | if (error && error != -ENOENT) | |
3191 | return error; | |
3192 | ||
3193 | error = mxt_parse_device_properties(data); | |
3194 | if (error) | |
3195 | return error; | |
3196 | ||
f657b00d SR |
3197 | data->reset_gpio = devm_gpiod_get_optional(&client->dev, |
3198 | "reset", GPIOD_OUT_LOW); | |
3199 | if (IS_ERR(data->reset_gpio)) { | |
3200 | error = PTR_ERR(data->reset_gpio); | |
3201 | dev_err(&client->dev, "Failed to get reset gpio: %d\n", error); | |
3202 | return error; | |
3203 | } | |
3204 | ||
8cc8446b | 3205 | error = devm_request_threaded_irq(&client->dev, client->irq, |
96a938aa | 3206 | NULL, mxt_interrupt, IRQF_ONESHOT, |
8cc8446b | 3207 | client->name, data); |
dd24dcf5 ND |
3208 | if (error) { |
3209 | dev_err(&client->dev, "Failed to register interrupt\n"); | |
8cc8446b | 3210 | return error; |
dd24dcf5 ND |
3211 | } |
3212 | ||
f657b00d SR |
3213 | if (data->reset_gpio) { |
3214 | data->in_bootloader = true; | |
3215 | msleep(MXT_RESET_TIME); | |
3216 | reinit_completion(&data->bl_completion); | |
3217 | gpiod_set_value(data->reset_gpio, 1); | |
3218 | error = mxt_wait_for_completion(data, &data->bl_completion, | |
3219 | MXT_RESET_TIMEOUT); | |
3220 | if (error) | |
3221 | return error; | |
3222 | data->in_bootloader = false; | |
3223 | } | |
3224 | ||
dd24dcf5 ND |
3225 | disable_irq(client->irq); |
3226 | ||
cb159115 DK |
3227 | error = mxt_initialize(data); |
3228 | if (error) | |
8cc8446b | 3229 | return error; |
4cf51c38 | 3230 | |
7686b108 | 3231 | error = sysfs_create_group(&client->dev.kobj, &mxt_attr_group); |
7bed6805 ND |
3232 | if (error) { |
3233 | dev_err(&client->dev, "Failure %d creating sysfs group\n", | |
3234 | error); | |
7a53d609 | 3235 | goto err_free_object; |
7bed6805 | 3236 | } |
4cf51c38 JS |
3237 | |
3238 | return 0; | |
3239 | ||
4cf51c38 | 3240 | err_free_object: |
58e4aeee | 3241 | mxt_free_input_device(data); |
5f3f9bc2 | 3242 | mxt_free_object_table(data); |
4cf51c38 JS |
3243 | return error; |
3244 | } | |
3245 | ||
e2619cf7 | 3246 | static int mxt_remove(struct i2c_client *client) |
4cf51c38 | 3247 | { |
7686b108 | 3248 | struct mxt_data *data = i2c_get_clientdata(client); |
4cf51c38 | 3249 | |
8cc8446b | 3250 | disable_irq(data->irq); |
7686b108 | 3251 | sysfs_remove_group(&client->dev.kobj, &mxt_attr_group); |
58e4aeee | 3252 | mxt_free_input_device(data); |
5f3f9bc2 | 3253 | mxt_free_object_table(data); |
4cf51c38 JS |
3254 | |
3255 | return 0; | |
3256 | } | |
3257 | ||
02b6a58b | 3258 | static int __maybe_unused mxt_suspend(struct device *dev) |
4cf51c38 | 3259 | { |
8b5fce06 | 3260 | struct i2c_client *client = to_i2c_client(dev); |
7686b108 | 3261 | struct mxt_data *data = i2c_get_clientdata(client); |
4cf51c38 JS |
3262 | struct input_dev *input_dev = data->input_dev; |
3263 | ||
50fabb02 PX |
3264 | if (!input_dev) |
3265 | return 0; | |
3266 | ||
4cf51c38 JS |
3267 | mutex_lock(&input_dev->mutex); |
3268 | ||
3269 | if (input_dev->users) | |
7686b108 | 3270 | mxt_stop(data); |
4cf51c38 JS |
3271 | |
3272 | mutex_unlock(&input_dev->mutex); | |
3273 | ||
3274 | return 0; | |
3275 | } | |
3276 | ||
02b6a58b | 3277 | static int __maybe_unused mxt_resume(struct device *dev) |
4cf51c38 | 3278 | { |
8b5fce06 | 3279 | struct i2c_client *client = to_i2c_client(dev); |
7686b108 | 3280 | struct mxt_data *data = i2c_get_clientdata(client); |
4cf51c38 JS |
3281 | struct input_dev *input_dev = data->input_dev; |
3282 | ||
50fabb02 PX |
3283 | if (!input_dev) |
3284 | return 0; | |
3285 | ||
4cf51c38 JS |
3286 | mutex_lock(&input_dev->mutex); |
3287 | ||
3288 | if (input_dev->users) | |
7686b108 | 3289 | mxt_start(data); |
4cf51c38 JS |
3290 | |
3291 | mutex_unlock(&input_dev->mutex); | |
3292 | ||
3293 | return 0; | |
3294 | } | |
4cf51c38 | 3295 | |
3a73c816 DK |
3296 | static SIMPLE_DEV_PM_OPS(mxt_pm_ops, mxt_suspend, mxt_resume); |
3297 | ||
78188be3 SW |
3298 | static const struct of_device_id mxt_of_match[] = { |
3299 | { .compatible = "atmel,maxtouch", }, | |
f6eeb9e5 JMC |
3300 | /* Compatibles listed below are deprecated */ |
3301 | { .compatible = "atmel,qt602240_ts", }, | |
3302 | { .compatible = "atmel,atmel_mxt_ts", }, | |
3303 | { .compatible = "atmel,atmel_mxt_tp", }, | |
3304 | { .compatible = "atmel,mXT224", }, | |
78188be3 SW |
3305 | {}, |
3306 | }; | |
3307 | MODULE_DEVICE_TABLE(of, mxt_of_match); | |
3308 | ||
4f8d8088 DT |
3309 | #ifdef CONFIG_ACPI |
3310 | static const struct acpi_device_id mxt_acpi_id[] = { | |
3311 | { "ATML0000", 0 }, /* Touchpad */ | |
3312 | { "ATML0001", 0 }, /* Touchscreen */ | |
3313 | { } | |
3314 | }; | |
3315 | MODULE_DEVICE_TABLE(acpi, mxt_acpi_id); | |
3316 | #endif | |
3317 | ||
7686b108 | 3318 | static const struct i2c_device_id mxt_id[] = { |
4cf51c38 | 3319 | { "qt602240_ts", 0 }, |
7686b108 | 3320 | { "atmel_mxt_ts", 0 }, |
22dfab7f | 3321 | { "atmel_mxt_tp", 0 }, |
b7d21058 | 3322 | { "maxtouch", 0 }, |
46ee2a05 | 3323 | { "mXT224", 0 }, |
4cf51c38 JS |
3324 | { } |
3325 | }; | |
7686b108 | 3326 | MODULE_DEVICE_TABLE(i2c, mxt_id); |
4cf51c38 | 3327 | |
7686b108 | 3328 | static struct i2c_driver mxt_driver = { |
4cf51c38 | 3329 | .driver = { |
7686b108 | 3330 | .name = "atmel_mxt_ts", |
96a938aa | 3331 | .of_match_table = mxt_of_match, |
4f8d8088 | 3332 | .acpi_match_table = ACPI_PTR(mxt_acpi_id), |
7686b108 | 3333 | .pm = &mxt_pm_ops, |
4cf51c38 | 3334 | }, |
7686b108 | 3335 | .probe = mxt_probe, |
1cb0aa88 | 3336 | .remove = mxt_remove, |
7686b108 | 3337 | .id_table = mxt_id, |
4cf51c38 JS |
3338 | }; |
3339 | ||
1b92c1cf | 3340 | module_i2c_driver(mxt_driver); |
4cf51c38 JS |
3341 | |
3342 | /* Module information */ | |
3343 | MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>"); | |
7686b108 | 3344 | MODULE_DESCRIPTION("Atmel maXTouch Touchscreen driver"); |
4cf51c38 | 3345 | MODULE_LICENSE("GPL"); |