Commit | Line | Data |
---|---|---|
4cf51c38 | 1 | /* |
7686b108 | 2 | * Atmel maXTouch Touchscreen driver |
4cf51c38 JS |
3 | * |
4 | * Copyright (C) 2010 Samsung Electronics Co.Ltd | |
50a77c65 | 5 | * Copyright (C) 2011-2014 Atmel Corporation |
1e0c0c5b DK |
6 | * Copyright (C) 2012 Google, Inc. |
7 | * | |
4cf51c38 JS |
8 | * Author: Joonyoung Shim <jy0922.shim@samsung.com> |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify it | |
11 | * under the terms of the GNU General Public License as published by the | |
12 | * Free Software Foundation; either version 2 of the License, or (at your | |
13 | * option) any later version. | |
14 | * | |
15 | */ | |
16 | ||
4f8d8088 DT |
17 | #include <linux/acpi.h> |
18 | #include <linux/dmi.h> | |
4cf51c38 | 19 | #include <linux/module.h> |
d79e7e47 BL |
20 | #include <linux/init.h> |
21 | #include <linux/completion.h> | |
4cf51c38 JS |
22 | #include <linux/delay.h> |
23 | #include <linux/firmware.h> | |
24 | #include <linux/i2c.h> | |
7f3884f7 | 25 | #include <linux/platform_data/atmel_mxt_ts.h> |
8b86c1c2 | 26 | #include <linux/input/mt.h> |
4cf51c38 | 27 | #include <linux/interrupt.h> |
78188be3 | 28 | #include <linux/of.h> |
4cf51c38 | 29 | #include <linux/slab.h> |
b23157dc | 30 | #include <asm/unaligned.h> |
ecfdd7e2 ND |
31 | #include <media/v4l2-device.h> |
32 | #include <media/v4l2-ioctl.h> | |
33 | #include <media/videobuf2-v4l2.h> | |
34 | #include <media/videobuf2-vmalloc.h> | |
4cf51c38 | 35 | |
50a77c65 | 36 | /* Firmware files */ |
7686b108 | 37 | #define MXT_FW_NAME "maxtouch.fw" |
50a77c65 ND |
38 | #define MXT_CFG_NAME "maxtouch.cfg" |
39 | #define MXT_CFG_MAGIC "OBP_RAW V1" | |
4cf51c38 JS |
40 | |
41 | /* Registers */ | |
7686b108 | 42 | #define MXT_OBJECT_START 0x07 |
7686b108 | 43 | #define MXT_OBJECT_SIZE 6 |
4ce6fa01 ND |
44 | #define MXT_INFO_CHECKSUM_SIZE 3 |
45 | #define MXT_MAX_BLOCK_WRITE 256 | |
4cf51c38 JS |
46 | |
47 | /* Object types */ | |
81c88a71 IV |
48 | #define MXT_DEBUG_DIAGNOSTIC_T37 37 |
49 | #define MXT_GEN_MESSAGE_T5 5 | |
50 | #define MXT_GEN_COMMAND_T6 6 | |
51 | #define MXT_GEN_POWER_T7 7 | |
52 | #define MXT_GEN_ACQUIRE_T8 8 | |
53 | #define MXT_GEN_DATASOURCE_T53 53 | |
54 | #define MXT_TOUCH_MULTI_T9 9 | |
55 | #define MXT_TOUCH_KEYARRAY_T15 15 | |
56 | #define MXT_TOUCH_PROXIMITY_T23 23 | |
57 | #define MXT_TOUCH_PROXKEY_T52 52 | |
58 | #define MXT_PROCI_GRIPFACE_T20 20 | |
59 | #define MXT_PROCG_NOISE_T22 22 | |
60 | #define MXT_PROCI_ONETOUCH_T24 24 | |
61 | #define MXT_PROCI_TWOTOUCH_T27 27 | |
62 | #define MXT_PROCI_GRIP_T40 40 | |
63 | #define MXT_PROCI_PALM_T41 41 | |
64 | #define MXT_PROCI_TOUCHSUPPRESSION_T42 42 | |
65 | #define MXT_PROCI_STYLUS_T47 47 | |
66 | #define MXT_PROCG_NOISESUPPRESSION_T48 48 | |
67 | #define MXT_SPT_COMMSCONFIG_T18 18 | |
68 | #define MXT_SPT_GPIOPWM_T19 19 | |
69 | #define MXT_SPT_SELFTEST_T25 25 | |
70 | #define MXT_SPT_CTECONFIG_T28 28 | |
71 | #define MXT_SPT_USERDATA_T38 38 | |
72 | #define MXT_SPT_DIGITIZER_T43 43 | |
73 | #define MXT_SPT_MESSAGECOUNT_T44 44 | |
74 | #define MXT_SPT_CTECONFIG_T46 46 | |
b23157dc | 75 | #define MXT_TOUCH_MULTITOUCHSCREEN_T100 100 |
81c88a71 | 76 | |
5f3f9bc2 ND |
77 | /* MXT_GEN_MESSAGE_T5 object */ |
78 | #define MXT_RPTID_NOMSG 0xff | |
79 | ||
81c88a71 | 80 | /* MXT_GEN_COMMAND_T6 field */ |
7686b108 IV |
81 | #define MXT_COMMAND_RESET 0 |
82 | #define MXT_COMMAND_BACKUPNV 1 | |
83 | #define MXT_COMMAND_CALIBRATE 2 | |
84 | #define MXT_COMMAND_REPORTALL 3 | |
85 | #define MXT_COMMAND_DIAGNOSTIC 5 | |
86 | ||
a4a2ef46 IV |
87 | /* Define for T6 status byte */ |
88 | #define MXT_T6_STATUS_RESET (1 << 7) | |
497767d1 ND |
89 | #define MXT_T6_STATUS_OFL (1 << 6) |
90 | #define MXT_T6_STATUS_SIGERR (1 << 5) | |
91 | #define MXT_T6_STATUS_CAL (1 << 4) | |
92 | #define MXT_T6_STATUS_CFGERR (1 << 3) | |
93 | #define MXT_T6_STATUS_COMSERR (1 << 2) | |
a4a2ef46 | 94 | |
81c88a71 | 95 | /* MXT_GEN_POWER_T7 field */ |
7f3884f7 ND |
96 | struct t7_config { |
97 | u8 idle; | |
98 | u8 active; | |
99 | } __packed; | |
100 | ||
101 | #define MXT_POWER_CFG_RUN 0 | |
102 | #define MXT_POWER_CFG_DEEPSLEEP 1 | |
7686b108 | 103 | |
81c88a71 | 104 | /* MXT_TOUCH_MULTI_T9 field */ |
7f3884f7 | 105 | #define MXT_T9_CTRL 0 |
2786489f ND |
106 | #define MXT_T9_XSIZE 3 |
107 | #define MXT_T9_YSIZE 4 | |
61dc1aba ND |
108 | #define MXT_T9_ORIENT 9 |
109 | #define MXT_T9_RANGE 18 | |
110 | ||
f3889ed1 ND |
111 | /* MXT_TOUCH_MULTI_T9 status */ |
112 | #define MXT_T9_UNGRIP (1 << 0) | |
113 | #define MXT_T9_SUPPRESS (1 << 1) | |
114 | #define MXT_T9_AMP (1 << 2) | |
115 | #define MXT_T9_VECTOR (1 << 3) | |
116 | #define MXT_T9_MOVE (1 << 4) | |
117 | #define MXT_T9_RELEASE (1 << 5) | |
118 | #define MXT_T9_PRESS (1 << 6) | |
119 | #define MXT_T9_DETECT (1 << 7) | |
120 | ||
61dc1aba | 121 | struct t9_range { |
1c0276d5 ND |
122 | __le16 x; |
123 | __le16 y; | |
61dc1aba ND |
124 | } __packed; |
125 | ||
f3889ed1 ND |
126 | /* MXT_TOUCH_MULTI_T9 orient */ |
127 | #define MXT_T9_ORIENT_SWITCH (1 << 0) | |
de601f71 ND |
128 | #define MXT_T9_ORIENT_INVERTX (1 << 1) |
129 | #define MXT_T9_ORIENT_INVERTY (1 << 2) | |
7686b108 | 130 | |
81c88a71 | 131 | /* MXT_SPT_COMMSCONFIG_T18 */ |
7686b108 IV |
132 | #define MXT_COMMS_CTRL 0 |
133 | #define MXT_COMMS_CMD 1 | |
134 | ||
d6a39404 ND |
135 | /* MXT_DEBUG_DIAGNOSTIC_T37 */ |
136 | #define MXT_DIAGNOSTIC_PAGEUP 0x01 | |
137 | #define MXT_DIAGNOSTIC_DELTAS 0x10 | |
06b3d3f3 | 138 | #define MXT_DIAGNOSTIC_REFS 0x11 |
d6a39404 ND |
139 | #define MXT_DIAGNOSTIC_SIZE 128 |
140 | ||
566d533a ND |
141 | #define MXT_FAMILY_1386 160 |
142 | #define MXT1386_COLUMNS 3 | |
143 | #define MXT1386_PAGES_PER_COLUMN 8 | |
144 | ||
d6a39404 ND |
145 | struct t37_debug { |
146 | #ifdef CONFIG_TOUCHSCREEN_ATMEL_MXT_T37 | |
147 | u8 mode; | |
148 | u8 page; | |
149 | u8 data[MXT_DIAGNOSTIC_SIZE]; | |
150 | #endif | |
151 | }; | |
152 | ||
81c88a71 | 153 | /* Define for MXT_GEN_COMMAND_T6 */ |
7686b108 | 154 | #define MXT_BOOT_VALUE 0xa5 |
a4a2ef46 | 155 | #define MXT_RESET_VALUE 0x01 |
7686b108 | 156 | #define MXT_BACKUP_VALUE 0x55 |
a4a2ef46 | 157 | |
b23157dc ND |
158 | /* T100 Multiple Touch Touchscreen */ |
159 | #define MXT_T100_CTRL 0 | |
160 | #define MXT_T100_CFG1 1 | |
161 | #define MXT_T100_TCHAUX 3 | |
2786489f | 162 | #define MXT_T100_XSIZE 9 |
b23157dc | 163 | #define MXT_T100_XRANGE 13 |
2786489f | 164 | #define MXT_T100_YSIZE 20 |
b23157dc ND |
165 | #define MXT_T100_YRANGE 24 |
166 | ||
167 | #define MXT_T100_CFG_SWITCHXY BIT(5) | |
de601f71 ND |
168 | #define MXT_T100_CFG_INVERTY BIT(6) |
169 | #define MXT_T100_CFG_INVERTX BIT(7) | |
b23157dc ND |
170 | |
171 | #define MXT_T100_TCHAUX_VECT BIT(0) | |
172 | #define MXT_T100_TCHAUX_AMPL BIT(1) | |
173 | #define MXT_T100_TCHAUX_AREA BIT(2) | |
174 | ||
175 | #define MXT_T100_DETECT BIT(7) | |
176 | #define MXT_T100_TYPE_MASK 0x70 | |
177 | ||
178 | enum t100_type { | |
179 | MXT_T100_TYPE_FINGER = 1, | |
180 | MXT_T100_TYPE_PASSIVE_STYLUS = 2, | |
181 | MXT_T100_TYPE_HOVERING_FINGER = 4, | |
182 | MXT_T100_TYPE_GLOVE = 5, | |
183 | MXT_T100_TYPE_LARGE_TOUCH = 6, | |
184 | }; | |
185 | ||
186 | #define MXT_DISTANCE_ACTIVE_TOUCH 0 | |
187 | #define MXT_DISTANCE_HOVERING 1 | |
188 | ||
189 | #define MXT_TOUCH_MAJOR_DEFAULT 1 | |
190 | #define MXT_PRESSURE_DEFAULT 1 | |
191 | ||
a4a2ef46 | 192 | /* Delay times */ |
8343bce1 LT |
193 | #define MXT_BACKUP_TIME 50 /* msec */ |
194 | #define MXT_RESET_TIME 200 /* msec */ | |
a4a2ef46 | 195 | #define MXT_RESET_TIMEOUT 3000 /* msec */ |
c3f78043 | 196 | #define MXT_CRC_TIMEOUT 1000 /* msec */ |
a0434b75 BL |
197 | #define MXT_FW_RESET_TIME 3000 /* msec */ |
198 | #define MXT_FW_CHG_TIMEOUT 300 /* msec */ | |
4cf51c38 JS |
199 | |
200 | /* Command to unlock bootloader */ | |
7686b108 IV |
201 | #define MXT_UNLOCK_CMD_MSB 0xaa |
202 | #define MXT_UNLOCK_CMD_LSB 0xdc | |
4cf51c38 JS |
203 | |
204 | /* Bootloader mode status */ | |
7686b108 IV |
205 | #define MXT_WAITING_BOOTLOAD_CMD 0xc0 /* valid 7 6 bit only */ |
206 | #define MXT_WAITING_FRAME_DATA 0x80 /* valid 7 6 bit only */ | |
207 | #define MXT_FRAME_CRC_CHECK 0x02 | |
208 | #define MXT_FRAME_CRC_FAIL 0x03 | |
209 | #define MXT_FRAME_CRC_PASS 0x04 | |
210 | #define MXT_APP_CRC_FAIL 0x40 /* valid 7 8 bit only */ | |
211 | #define MXT_BOOT_STATUS_MASK 0x3f | |
e57a66aa ND |
212 | #define MXT_BOOT_EXTENDED_ID (1 << 5) |
213 | #define MXT_BOOT_ID_MASK 0x1f | |
4cf51c38 | 214 | |
4cf51c38 | 215 | /* Touchscreen absolute values */ |
7686b108 | 216 | #define MXT_MAX_AREA 0xff |
4cf51c38 | 217 | |
22dfab7f DK |
218 | #define MXT_PIXELS_PER_MM 20 |
219 | ||
7686b108 | 220 | struct mxt_info { |
4cf51c38 JS |
221 | u8 family_id; |
222 | u8 variant_id; | |
223 | u8 version; | |
224 | u8 build; | |
225 | u8 matrix_xsize; | |
226 | u8 matrix_ysize; | |
227 | u8 object_num; | |
228 | }; | |
229 | ||
7686b108 | 230 | struct mxt_object { |
4cf51c38 JS |
231 | u8 type; |
232 | u16 start_address; | |
1e0c0c5b DK |
233 | u8 size_minus_one; |
234 | u8 instances_minus_one; | |
4cf51c38 | 235 | u8 num_report_ids; |
333e5a9a | 236 | } __packed; |
4cf51c38 | 237 | |
d6a39404 ND |
238 | struct mxt_dbg { |
239 | u16 t37_address; | |
240 | u16 diag_cmd_address; | |
241 | struct t37_debug *t37_buf; | |
242 | unsigned int t37_pages; | |
243 | unsigned int t37_nodes; | |
ecfdd7e2 ND |
244 | |
245 | struct v4l2_device v4l2; | |
246 | struct v4l2_pix_format format; | |
247 | struct video_device vdev; | |
248 | struct vb2_queue queue; | |
249 | struct mutex lock; | |
250 | int input; | |
251 | }; | |
252 | ||
06b3d3f3 ND |
253 | enum v4l_dbg_inputs { |
254 | MXT_V4L_INPUT_DELTAS, | |
255 | MXT_V4L_INPUT_REFS, | |
256 | MXT_V4L_INPUT_MAX, | |
257 | }; | |
258 | ||
ecfdd7e2 ND |
259 | static const struct v4l2_file_operations mxt_video_fops = { |
260 | .owner = THIS_MODULE, | |
261 | .open = v4l2_fh_open, | |
262 | .release = vb2_fop_release, | |
263 | .unlocked_ioctl = video_ioctl2, | |
264 | .read = vb2_fop_read, | |
265 | .mmap = vb2_fop_mmap, | |
266 | .poll = vb2_fop_poll, | |
d6a39404 ND |
267 | }; |
268 | ||
4cf51c38 | 269 | /* Each client has this additional data */ |
7686b108 | 270 | struct mxt_data { |
4cf51c38 JS |
271 | struct i2c_client *client; |
272 | struct input_dev *input_dev; | |
ec02ac2b | 273 | char phys[64]; /* device physical location */ |
7686b108 IV |
274 | const struct mxt_platform_data *pdata; |
275 | struct mxt_object *object_table; | |
276 | struct mxt_info info; | |
4cf51c38 | 277 | unsigned int irq; |
910d8051 JS |
278 | unsigned int max_x; |
279 | unsigned int max_y; | |
de601f71 ND |
280 | bool invertx; |
281 | bool inverty; | |
1c0276d5 | 282 | bool xy_switch; |
2786489f ND |
283 | u8 xsize; |
284 | u8 ysize; | |
d79e7e47 | 285 | bool in_bootloader; |
4ce6fa01 | 286 | u16 mem_size; |
b23157dc ND |
287 | u8 t100_aux_ampl; |
288 | u8 t100_aux_area; | |
289 | u8 t100_aux_vect; | |
9d8dc3e5 | 290 | u8 max_reportid; |
c3f78043 | 291 | u32 config_crc; |
4ce6fa01 | 292 | u32 info_crc; |
f28a842d | 293 | u8 bootloader_addr; |
5f3f9bc2 | 294 | u8 *msg_buf; |
497767d1 | 295 | u8 t6_status; |
b9b05a89 | 296 | bool update_input; |
9d8dc3e5 ND |
297 | u8 last_message_count; |
298 | u8 num_touchids; | |
b23157dc | 299 | u8 multitouch; |
7f3884f7 | 300 | struct t7_config t7_cfg; |
d6a39404 | 301 | struct mxt_dbg dbg; |
333e5a9a DK |
302 | |
303 | /* Cached parameters from object table */ | |
b9b05a89 | 304 | u16 T5_address; |
5f3f9bc2 | 305 | u8 T5_msg_size; |
fdf80421 | 306 | u8 T6_reportid; |
a4a2ef46 | 307 | u16 T6_address; |
4ce6fa01 | 308 | u16 T7_address; |
333e5a9a DK |
309 | u8 T9_reportid_min; |
310 | u8 T9_reportid_max; | |
22dfab7f | 311 | u8 T19_reportid; |
9d8dc3e5 | 312 | u16 T44_address; |
b23157dc ND |
313 | u8 T100_reportid_min; |
314 | u8 T100_reportid_max; | |
d79e7e47 BL |
315 | |
316 | /* for fw update in bootloader */ | |
317 | struct completion bl_completion; | |
a4a2ef46 IV |
318 | |
319 | /* for reset handling */ | |
320 | struct completion reset_completion; | |
c3f78043 ND |
321 | |
322 | /* for config update handling */ | |
323 | struct completion crc_completion; | |
4cf51c38 JS |
324 | }; |
325 | ||
ecfdd7e2 ND |
326 | struct mxt_vb2_buffer { |
327 | struct vb2_buffer vb; | |
328 | struct list_head list; | |
329 | }; | |
330 | ||
1e0c0c5b DK |
331 | static size_t mxt_obj_size(const struct mxt_object *obj) |
332 | { | |
333 | return obj->size_minus_one + 1; | |
334 | } | |
335 | ||
336 | static size_t mxt_obj_instances(const struct mxt_object *obj) | |
337 | { | |
338 | return obj->instances_minus_one + 1; | |
339 | } | |
340 | ||
7686b108 | 341 | static bool mxt_object_readable(unsigned int type) |
4cf51c38 JS |
342 | { |
343 | switch (type) { | |
81c88a71 IV |
344 | case MXT_GEN_COMMAND_T6: |
345 | case MXT_GEN_POWER_T7: | |
346 | case MXT_GEN_ACQUIRE_T8: | |
347 | case MXT_GEN_DATASOURCE_T53: | |
348 | case MXT_TOUCH_MULTI_T9: | |
349 | case MXT_TOUCH_KEYARRAY_T15: | |
350 | case MXT_TOUCH_PROXIMITY_T23: | |
351 | case MXT_TOUCH_PROXKEY_T52: | |
352 | case MXT_PROCI_GRIPFACE_T20: | |
353 | case MXT_PROCG_NOISE_T22: | |
354 | case MXT_PROCI_ONETOUCH_T24: | |
355 | case MXT_PROCI_TWOTOUCH_T27: | |
356 | case MXT_PROCI_GRIP_T40: | |
357 | case MXT_PROCI_PALM_T41: | |
358 | case MXT_PROCI_TOUCHSUPPRESSION_T42: | |
359 | case MXT_PROCI_STYLUS_T47: | |
360 | case MXT_PROCG_NOISESUPPRESSION_T48: | |
361 | case MXT_SPT_COMMSCONFIG_T18: | |
362 | case MXT_SPT_GPIOPWM_T19: | |
363 | case MXT_SPT_SELFTEST_T25: | |
364 | case MXT_SPT_CTECONFIG_T28: | |
365 | case MXT_SPT_USERDATA_T38: | |
366 | case MXT_SPT_DIGITIZER_T43: | |
367 | case MXT_SPT_CTECONFIG_T46: | |
4cf51c38 JS |
368 | return true; |
369 | default: | |
370 | return false; | |
371 | } | |
372 | } | |
373 | ||
5f3f9bc2 | 374 | static void mxt_dump_message(struct mxt_data *data, u8 *message) |
4cf51c38 | 375 | { |
5f3f9bc2 ND |
376 | dev_dbg(&data->client->dev, "message: %*ph\n", |
377 | data->T5_msg_size, message); | |
4cf51c38 JS |
378 | } |
379 | ||
a4a2ef46 IV |
380 | static int mxt_wait_for_completion(struct mxt_data *data, |
381 | struct completion *comp, | |
382 | unsigned int timeout_ms) | |
d79e7e47 BL |
383 | { |
384 | struct device *dev = &data->client->dev; | |
d79e7e47 BL |
385 | unsigned long timeout = msecs_to_jiffies(timeout_ms); |
386 | long ret; | |
387 | ||
388 | ret = wait_for_completion_interruptible_timeout(comp, timeout); | |
389 | if (ret < 0) { | |
390 | return ret; | |
391 | } else if (ret == 0) { | |
392 | dev_err(dev, "Wait for completion timed out.\n"); | |
393 | return -ETIMEDOUT; | |
394 | } | |
395 | return 0; | |
396 | } | |
397 | ||
f28a842d ND |
398 | static int mxt_bootloader_read(struct mxt_data *data, |
399 | u8 *val, unsigned int count) | |
400 | { | |
401 | int ret; | |
402 | struct i2c_msg msg; | |
403 | ||
404 | msg.addr = data->bootloader_addr; | |
405 | msg.flags = data->client->flags & I2C_M_TEN; | |
406 | msg.flags |= I2C_M_RD; | |
407 | msg.len = count; | |
408 | msg.buf = val; | |
409 | ||
410 | ret = i2c_transfer(data->client->adapter, &msg, 1); | |
f28a842d ND |
411 | if (ret == 1) { |
412 | ret = 0; | |
413 | } else { | |
414 | ret = ret < 0 ? ret : -EIO; | |
415 | dev_err(&data->client->dev, "%s: i2c recv failed (%d)\n", | |
416 | __func__, ret); | |
417 | } | |
418 | ||
419 | return ret; | |
420 | } | |
421 | ||
422 | static int mxt_bootloader_write(struct mxt_data *data, | |
423 | const u8 * const val, unsigned int count) | |
424 | { | |
425 | int ret; | |
426 | struct i2c_msg msg; | |
427 | ||
428 | msg.addr = data->bootloader_addr; | |
429 | msg.flags = data->client->flags & I2C_M_TEN; | |
430 | msg.len = count; | |
431 | msg.buf = (u8 *)val; | |
432 | ||
433 | ret = i2c_transfer(data->client->adapter, &msg, 1); | |
434 | if (ret == 1) { | |
435 | ret = 0; | |
436 | } else { | |
437 | ret = ret < 0 ? ret : -EIO; | |
438 | dev_err(&data->client->dev, "%s: i2c send failed (%d)\n", | |
439 | __func__, ret); | |
440 | } | |
441 | ||
442 | return ret; | |
443 | } | |
444 | ||
8efaa5e5 | 445 | static int mxt_lookup_bootloader_address(struct mxt_data *data, bool retry) |
f28a842d ND |
446 | { |
447 | u8 appmode = data->client->addr; | |
448 | u8 bootloader; | |
449 | ||
450 | switch (appmode) { | |
451 | case 0x4a: | |
452 | case 0x4b: | |
44a0bab2 | 453 | /* Chips after 1664S use different scheme */ |
8efaa5e5 | 454 | if (retry || data->info.family_id >= 0xa2) { |
44a0bab2 ND |
455 | bootloader = appmode - 0x24; |
456 | break; | |
457 | } | |
458 | /* Fall through for normal case */ | |
f28a842d ND |
459 | case 0x4c: |
460 | case 0x4d: | |
461 | case 0x5a: | |
462 | case 0x5b: | |
463 | bootloader = appmode - 0x26; | |
464 | break; | |
6cd1ab0f | 465 | |
f28a842d ND |
466 | default: |
467 | dev_err(&data->client->dev, | |
468 | "Appmode i2c address 0x%02x not found\n", | |
469 | appmode); | |
470 | return -EINVAL; | |
471 | } | |
472 | ||
473 | data->bootloader_addr = bootloader; | |
474 | return 0; | |
475 | } | |
476 | ||
6cd1ab0f | 477 | static int mxt_probe_bootloader(struct mxt_data *data, bool alt_address) |
a9fdd1e6 ND |
478 | { |
479 | struct device *dev = &data->client->dev; | |
6cd1ab0f | 480 | int error; |
a9fdd1e6 ND |
481 | u8 val; |
482 | bool crc_failure; | |
483 | ||
6cd1ab0f DT |
484 | error = mxt_lookup_bootloader_address(data, alt_address); |
485 | if (error) | |
486 | return error; | |
a9fdd1e6 | 487 | |
6cd1ab0f DT |
488 | error = mxt_bootloader_read(data, &val, 1); |
489 | if (error) | |
490 | return error; | |
a9fdd1e6 ND |
491 | |
492 | /* Check app crc fail mode */ | |
493 | crc_failure = (val & ~MXT_BOOT_STATUS_MASK) == MXT_APP_CRC_FAIL; | |
494 | ||
495 | dev_err(dev, "Detected bootloader, status:%02X%s\n", | |
496 | val, crc_failure ? ", APP_CRC_FAIL" : ""); | |
497 | ||
498 | return 0; | |
499 | } | |
500 | ||
e57a66aa ND |
501 | static u8 mxt_get_bootloader_version(struct mxt_data *data, u8 val) |
502 | { | |
503 | struct device *dev = &data->client->dev; | |
504 | u8 buf[3]; | |
505 | ||
506 | if (val & MXT_BOOT_EXTENDED_ID) { | |
507 | if (mxt_bootloader_read(data, &buf[0], 3) != 0) { | |
508 | dev_err(dev, "%s: i2c failure\n", __func__); | |
68807a0c | 509 | return val; |
e57a66aa ND |
510 | } |
511 | ||
512 | dev_dbg(dev, "Bootloader ID:%d Version:%d\n", buf[1], buf[2]); | |
513 | ||
514 | return buf[0]; | |
515 | } else { | |
516 | dev_dbg(dev, "Bootloader ID:%d\n", val & MXT_BOOT_ID_MASK); | |
517 | ||
518 | return val; | |
519 | } | |
520 | } | |
521 | ||
385deb96 ND |
522 | static int mxt_check_bootloader(struct mxt_data *data, unsigned int state, |
523 | bool wait) | |
4cf51c38 | 524 | { |
f28a842d | 525 | struct device *dev = &data->client->dev; |
4cf51c38 | 526 | u8 val; |
d79e7e47 | 527 | int ret; |
4cf51c38 JS |
528 | |
529 | recheck: | |
385deb96 | 530 | if (wait) { |
d79e7e47 BL |
531 | /* |
532 | * In application update mode, the interrupt | |
533 | * line signals state transitions. We must wait for the | |
534 | * CHG assertion before reading the status byte. | |
535 | * Once the status byte has been read, the line is deasserted. | |
536 | */ | |
a4a2ef46 IV |
537 | ret = mxt_wait_for_completion(data, &data->bl_completion, |
538 | MXT_FW_CHG_TIMEOUT); | |
d79e7e47 BL |
539 | if (ret) { |
540 | /* | |
541 | * TODO: handle -ERESTARTSYS better by terminating | |
542 | * fw update process before returning to userspace | |
543 | * by writing length 0x000 to device (iff we are in | |
544 | * WAITING_FRAME_DATA state). | |
545 | */ | |
f28a842d | 546 | dev_err(dev, "Update wait error %d\n", ret); |
d79e7e47 BL |
547 | return ret; |
548 | } | |
549 | } | |
550 | ||
f28a842d ND |
551 | ret = mxt_bootloader_read(data, &val, 1); |
552 | if (ret) | |
553 | return ret; | |
4cf51c38 | 554 | |
e57a66aa ND |
555 | if (state == MXT_WAITING_BOOTLOAD_CMD) |
556 | val = mxt_get_bootloader_version(data, val); | |
557 | ||
4cf51c38 | 558 | switch (state) { |
7686b108 IV |
559 | case MXT_WAITING_BOOTLOAD_CMD: |
560 | case MXT_WAITING_FRAME_DATA: | |
a9fdd1e6 | 561 | case MXT_APP_CRC_FAIL: |
7686b108 | 562 | val &= ~MXT_BOOT_STATUS_MASK; |
4cf51c38 | 563 | break; |
7686b108 | 564 | case MXT_FRAME_CRC_PASS: |
f943c74a | 565 | if (val == MXT_FRAME_CRC_CHECK) { |
4cf51c38 | 566 | goto recheck; |
f943c74a ND |
567 | } else if (val == MXT_FRAME_CRC_FAIL) { |
568 | dev_err(dev, "Bootloader CRC fail\n"); | |
569 | return -EINVAL; | |
570 | } | |
4cf51c38 JS |
571 | break; |
572 | default: | |
573 | return -EINVAL; | |
574 | } | |
575 | ||
576 | if (val != state) { | |
f28a842d | 577 | dev_err(dev, "Invalid bootloader state %02X != %02X\n", |
7bed6805 | 578 | val, state); |
4cf51c38 JS |
579 | return -EINVAL; |
580 | } | |
581 | ||
582 | return 0; | |
583 | } | |
584 | ||
8efaa5e5 | 585 | static int mxt_send_bootloader_cmd(struct mxt_data *data, bool unlock) |
4cf51c38 | 586 | { |
f28a842d | 587 | int ret; |
4cf51c38 JS |
588 | u8 buf[2]; |
589 | ||
8efaa5e5 ND |
590 | if (unlock) { |
591 | buf[0] = MXT_UNLOCK_CMD_LSB; | |
592 | buf[1] = MXT_UNLOCK_CMD_MSB; | |
593 | } else { | |
594 | buf[0] = 0x01; | |
595 | buf[1] = 0x01; | |
596 | } | |
4cf51c38 | 597 | |
f28a842d ND |
598 | ret = mxt_bootloader_write(data, buf, 2); |
599 | if (ret) | |
600 | return ret; | |
4cf51c38 JS |
601 | |
602 | return 0; | |
603 | } | |
604 | ||
7686b108 | 605 | static int __mxt_read_reg(struct i2c_client *client, |
4cf51c38 JS |
606 | u16 reg, u16 len, void *val) |
607 | { | |
608 | struct i2c_msg xfer[2]; | |
609 | u8 buf[2]; | |
771733e3 | 610 | int ret; |
4cf51c38 JS |
611 | |
612 | buf[0] = reg & 0xff; | |
613 | buf[1] = (reg >> 8) & 0xff; | |
614 | ||
615 | /* Write register */ | |
616 | xfer[0].addr = client->addr; | |
617 | xfer[0].flags = 0; | |
618 | xfer[0].len = 2; | |
619 | xfer[0].buf = buf; | |
620 | ||
621 | /* Read data */ | |
622 | xfer[1].addr = client->addr; | |
623 | xfer[1].flags = I2C_M_RD; | |
624 | xfer[1].len = len; | |
625 | xfer[1].buf = val; | |
626 | ||
771733e3 DK |
627 | ret = i2c_transfer(client->adapter, xfer, 2); |
628 | if (ret == 2) { | |
629 | ret = 0; | |
630 | } else { | |
631 | if (ret >= 0) | |
632 | ret = -EIO; | |
633 | dev_err(&client->dev, "%s: i2c transfer failed (%d)\n", | |
634 | __func__, ret); | |
4cf51c38 JS |
635 | } |
636 | ||
771733e3 | 637 | return ret; |
4cf51c38 JS |
638 | } |
639 | ||
9638ab7c DK |
640 | static int __mxt_write_reg(struct i2c_client *client, u16 reg, u16 len, |
641 | const void *val) | |
4cf51c38 | 642 | { |
9638ab7c DK |
643 | u8 *buf; |
644 | size_t count; | |
771733e3 | 645 | int ret; |
4cf51c38 | 646 | |
9638ab7c DK |
647 | count = len + 2; |
648 | buf = kmalloc(count, GFP_KERNEL); | |
649 | if (!buf) | |
650 | return -ENOMEM; | |
4cf51c38 JS |
651 | |
652 | buf[0] = reg & 0xff; | |
653 | buf[1] = (reg >> 8) & 0xff; | |
9638ab7c | 654 | memcpy(&buf[2], val, len); |
4cf51c38 | 655 | |
9638ab7c DK |
656 | ret = i2c_master_send(client, buf, count); |
657 | if (ret == count) { | |
771733e3 DK |
658 | ret = 0; |
659 | } else { | |
660 | if (ret >= 0) | |
661 | ret = -EIO; | |
662 | dev_err(&client->dev, "%s: i2c send failed (%d)\n", | |
663 | __func__, ret); | |
4cf51c38 JS |
664 | } |
665 | ||
9638ab7c | 666 | kfree(buf); |
771733e3 | 667 | return ret; |
4cf51c38 JS |
668 | } |
669 | ||
9638ab7c | 670 | static int mxt_write_reg(struct i2c_client *client, u16 reg, u8 val) |
4cf51c38 | 671 | { |
9638ab7c | 672 | return __mxt_write_reg(client, reg, 1, &val); |
4cf51c38 JS |
673 | } |
674 | ||
7686b108 IV |
675 | static struct mxt_object * |
676 | mxt_get_object(struct mxt_data *data, u8 type) | |
4cf51c38 | 677 | { |
7686b108 | 678 | struct mxt_object *object; |
4cf51c38 JS |
679 | int i; |
680 | ||
681 | for (i = 0; i < data->info.object_num; i++) { | |
682 | object = data->object_table + i; | |
683 | if (object->type == type) | |
684 | return object; | |
685 | } | |
686 | ||
50a77c65 | 687 | dev_warn(&data->client->dev, "Invalid object type T%u\n", type); |
4cf51c38 JS |
688 | return NULL; |
689 | } | |
690 | ||
497767d1 ND |
691 | static void mxt_proc_t6_messages(struct mxt_data *data, u8 *msg) |
692 | { | |
693 | struct device *dev = &data->client->dev; | |
694 | u8 status = msg[1]; | |
695 | u32 crc = msg[2] | (msg[3] << 8) | (msg[4] << 16); | |
696 | ||
697 | complete(&data->crc_completion); | |
698 | ||
699 | if (crc != data->config_crc) { | |
700 | data->config_crc = crc; | |
701 | dev_dbg(dev, "T6 Config Checksum: 0x%06X\n", crc); | |
702 | } | |
703 | ||
704 | /* Detect reset */ | |
705 | if (status & MXT_T6_STATUS_RESET) | |
706 | complete(&data->reset_completion); | |
707 | ||
708 | /* Output debug if status has changed */ | |
709 | if (status != data->t6_status) | |
710 | dev_dbg(dev, "T6 Status 0x%02X%s%s%s%s%s%s%s\n", | |
711 | status, | |
712 | status == 0 ? " OK" : "", | |
713 | status & MXT_T6_STATUS_RESET ? " RESET" : "", | |
714 | status & MXT_T6_STATUS_OFL ? " OFL" : "", | |
715 | status & MXT_T6_STATUS_SIGERR ? " SIGERR" : "", | |
716 | status & MXT_T6_STATUS_CAL ? " CAL" : "", | |
717 | status & MXT_T6_STATUS_CFGERR ? " CFGERR" : "", | |
718 | status & MXT_T6_STATUS_COMSERR ? " COMSERR" : ""); | |
719 | ||
720 | /* Save current status */ | |
721 | data->t6_status = status; | |
722 | } | |
723 | ||
7f405483 LT |
724 | static int mxt_write_object(struct mxt_data *data, |
725 | u8 type, u8 offset, u8 val) | |
726 | { | |
727 | struct mxt_object *object; | |
728 | u16 reg; | |
729 | ||
730 | object = mxt_get_object(data, type); | |
731 | if (!object || offset >= mxt_obj_size(object)) | |
732 | return -EINVAL; | |
733 | ||
734 | reg = object->start_address; | |
735 | return mxt_write_reg(data->client, reg + offset, val); | |
736 | } | |
737 | ||
5f3f9bc2 | 738 | static void mxt_input_button(struct mxt_data *data, u8 *message) |
22dfab7f DK |
739 | { |
740 | struct input_dev *input = data->input_dev; | |
fb5e4c3e | 741 | const struct mxt_platform_data *pdata = data->pdata; |
22dfab7f DK |
742 | int i; |
743 | ||
fb5e4c3e ND |
744 | for (i = 0; i < pdata->t19_num_keys; i++) { |
745 | if (pdata->t19_keymap[i] == KEY_RESERVED) | |
22dfab7f | 746 | continue; |
c37f6d38 DT |
747 | |
748 | /* Active-low switch */ | |
749 | input_report_key(input, pdata->t19_keymap[i], | |
750 | !(message[1] & BIT(i))); | |
22dfab7f DK |
751 | } |
752 | } | |
753 | ||
b735fbe0 | 754 | static void mxt_input_sync(struct mxt_data *data) |
eef820dc | 755 | { |
b735fbe0 BL |
756 | input_mt_report_pointer_emulation(data->input_dev, |
757 | data->pdata->t19_num_keys); | |
758 | input_sync(data->input_dev); | |
eef820dc ND |
759 | } |
760 | ||
b9b05a89 | 761 | static void mxt_proc_t9_message(struct mxt_data *data, u8 *message) |
4cf51c38 | 762 | { |
4cf51c38 | 763 | struct device *dev = &data->client->dev; |
fba5bc31 | 764 | struct input_dev *input_dev = data->input_dev; |
5f3f9bc2 ND |
765 | int id; |
766 | u8 status; | |
4cf51c38 JS |
767 | int x; |
768 | int y; | |
769 | int area; | |
fea9e467 | 770 | int amplitude; |
4cf51c38 | 771 | |
5f3f9bc2 ND |
772 | id = message[0] - data->T9_reportid_min; |
773 | status = message[1]; | |
774 | x = (message[2] << 4) | ((message[4] >> 4) & 0xf); | |
775 | y = (message[3] << 4) | ((message[4] & 0xf)); | |
eef820dc ND |
776 | |
777 | /* Handle 10/12 bit switching */ | |
910d8051 | 778 | if (data->max_x < 1024) |
eef820dc | 779 | x >>= 2; |
910d8051 | 780 | if (data->max_y < 1024) |
eef820dc | 781 | y >>= 2; |
910d8051 | 782 | |
5f3f9bc2 ND |
783 | area = message[5]; |
784 | amplitude = message[6]; | |
4cf51c38 | 785 | |
b2e459b8 DK |
786 | dev_dbg(dev, |
787 | "[%u] %c%c%c%c%c%c%c%c x: %5u y: %5u area: %3u amp: %3u\n", | |
788 | id, | |
f3889ed1 ND |
789 | (status & MXT_T9_DETECT) ? 'D' : '.', |
790 | (status & MXT_T9_PRESS) ? 'P' : '.', | |
791 | (status & MXT_T9_RELEASE) ? 'R' : '.', | |
792 | (status & MXT_T9_MOVE) ? 'M' : '.', | |
793 | (status & MXT_T9_VECTOR) ? 'V' : '.', | |
794 | (status & MXT_T9_AMP) ? 'A' : '.', | |
795 | (status & MXT_T9_SUPPRESS) ? 'S' : '.', | |
796 | (status & MXT_T9_UNGRIP) ? 'U' : '.', | |
fea9e467 | 797 | x, y, area, amplitude); |
b2e459b8 | 798 | |
fba5bc31 | 799 | input_mt_slot(input_dev, id); |
fba5bc31 | 800 | |
f3889ed1 | 801 | if (status & MXT_T9_DETECT) { |
eef820dc ND |
802 | /* |
803 | * Multiple bits may be set if the host is slow to read | |
804 | * the status messages, indicating all the events that | |
805 | * have happened. | |
806 | */ | |
807 | if (status & MXT_T9_RELEASE) { | |
808 | input_mt_report_slot_state(input_dev, | |
809 | MT_TOOL_FINGER, 0); | |
b735fbe0 | 810 | mxt_input_sync(data); |
eef820dc ND |
811 | } |
812 | ||
813 | /* Touch active */ | |
814 | input_mt_report_slot_state(input_dev, MT_TOOL_FINGER, 1); | |
fba5bc31 DK |
815 | input_report_abs(input_dev, ABS_MT_POSITION_X, x); |
816 | input_report_abs(input_dev, ABS_MT_POSITION_Y, y); | |
fea9e467 | 817 | input_report_abs(input_dev, ABS_MT_PRESSURE, amplitude); |
fba5bc31 | 818 | input_report_abs(input_dev, ABS_MT_TOUCH_MAJOR, area); |
eef820dc ND |
819 | } else { |
820 | /* Touch no longer active, close out slot */ | |
821 | input_mt_report_slot_state(input_dev, MT_TOOL_FINGER, 0); | |
fba5bc31 | 822 | } |
b9b05a89 ND |
823 | |
824 | data->update_input = true; | |
4cf51c38 | 825 | } |
4cf51c38 | 826 | |
b23157dc ND |
827 | static void mxt_proc_t100_message(struct mxt_data *data, u8 *message) |
828 | { | |
829 | struct device *dev = &data->client->dev; | |
830 | struct input_dev *input_dev = data->input_dev; | |
831 | int id; | |
832 | u8 status; | |
833 | u8 type = 0; | |
834 | u16 x; | |
835 | u16 y; | |
836 | int distance = 0; | |
837 | int tool = 0; | |
838 | u8 major = 0; | |
839 | u8 pressure = 0; | |
840 | u8 orientation = 0; | |
841 | ||
842 | id = message[0] - data->T100_reportid_min - 2; | |
843 | ||
844 | /* ignore SCRSTATUS events */ | |
845 | if (id < 0) | |
846 | return; | |
847 | ||
848 | status = message[1]; | |
849 | x = get_unaligned_le16(&message[2]); | |
850 | y = get_unaligned_le16(&message[4]); | |
851 | ||
852 | if (status & MXT_T100_DETECT) { | |
853 | type = (status & MXT_T100_TYPE_MASK) >> 4; | |
854 | ||
855 | switch (type) { | |
856 | case MXT_T100_TYPE_HOVERING_FINGER: | |
857 | tool = MT_TOOL_FINGER; | |
858 | distance = MXT_DISTANCE_HOVERING; | |
859 | ||
860 | if (data->t100_aux_vect) | |
861 | orientation = message[data->t100_aux_vect]; | |
862 | ||
863 | break; | |
864 | ||
865 | case MXT_T100_TYPE_FINGER: | |
866 | case MXT_T100_TYPE_GLOVE: | |
867 | tool = MT_TOOL_FINGER; | |
868 | distance = MXT_DISTANCE_ACTIVE_TOUCH; | |
869 | ||
870 | if (data->t100_aux_area) | |
871 | major = message[data->t100_aux_area]; | |
872 | ||
873 | if (data->t100_aux_ampl) | |
874 | pressure = message[data->t100_aux_ampl]; | |
875 | ||
876 | if (data->t100_aux_vect) | |
877 | orientation = message[data->t100_aux_vect]; | |
878 | ||
879 | break; | |
880 | ||
881 | case MXT_T100_TYPE_PASSIVE_STYLUS: | |
882 | tool = MT_TOOL_PEN; | |
883 | ||
884 | /* | |
885 | * Passive stylus is reported with size zero so | |
886 | * hardcode. | |
887 | */ | |
888 | major = MXT_TOUCH_MAJOR_DEFAULT; | |
889 | ||
890 | if (data->t100_aux_ampl) | |
891 | pressure = message[data->t100_aux_ampl]; | |
892 | ||
893 | break; | |
894 | ||
895 | case MXT_T100_TYPE_LARGE_TOUCH: | |
896 | /* Ignore suppressed touch */ | |
897 | break; | |
898 | ||
899 | default: | |
900 | dev_dbg(dev, "Unexpected T100 type\n"); | |
901 | return; | |
902 | } | |
903 | } | |
904 | ||
905 | /* | |
906 | * Values reported should be non-zero if tool is touching the | |
907 | * device | |
908 | */ | |
909 | if (!pressure && type != MXT_T100_TYPE_HOVERING_FINGER) | |
910 | pressure = MXT_PRESSURE_DEFAULT; | |
911 | ||
912 | input_mt_slot(input_dev, id); | |
913 | ||
914 | if (status & MXT_T100_DETECT) { | |
915 | dev_dbg(dev, "[%u] type:%u x:%u y:%u a:%02X p:%02X v:%02X\n", | |
916 | id, type, x, y, major, pressure, orientation); | |
917 | ||
918 | input_mt_report_slot_state(input_dev, tool, 1); | |
919 | input_report_abs(input_dev, ABS_MT_POSITION_X, x); | |
920 | input_report_abs(input_dev, ABS_MT_POSITION_Y, y); | |
921 | input_report_abs(input_dev, ABS_MT_TOUCH_MAJOR, major); | |
922 | input_report_abs(input_dev, ABS_MT_PRESSURE, pressure); | |
923 | input_report_abs(input_dev, ABS_MT_DISTANCE, distance); | |
924 | input_report_abs(input_dev, ABS_MT_ORIENTATION, orientation); | |
925 | } else { | |
926 | dev_dbg(dev, "[%u] release\n", id); | |
927 | ||
928 | /* close out slot */ | |
929 | input_mt_report_slot_state(input_dev, 0, 0); | |
930 | } | |
931 | ||
932 | data->update_input = true; | |
933 | } | |
934 | ||
b9b05a89 | 935 | static int mxt_proc_message(struct mxt_data *data, u8 *message) |
04a79181 | 936 | { |
b9b05a89 ND |
937 | u8 report_id = message[0]; |
938 | ||
939 | if (report_id == MXT_RPTID_NOMSG) | |
940 | return 0; | |
941 | ||
942 | if (report_id == data->T6_reportid) { | |
943 | mxt_proc_t6_messages(data, message); | |
944 | } else if (!data->input_dev) { | |
945 | /* | |
946 | * Do not report events if input device | |
947 | * is not yet registered. | |
948 | */ | |
949 | mxt_dump_message(data, message); | |
b23157dc ND |
950 | } else if (report_id >= data->T9_reportid_min && |
951 | report_id <= data->T9_reportid_max) { | |
b9b05a89 | 952 | mxt_proc_t9_message(data, message); |
b23157dc ND |
953 | } else if (report_id >= data->T100_reportid_min && |
954 | report_id <= data->T100_reportid_max) { | |
955 | mxt_proc_t100_message(data, message); | |
b9b05a89 ND |
956 | } else if (report_id == data->T19_reportid) { |
957 | mxt_input_button(data, message); | |
958 | data->update_input = true; | |
959 | } else { | |
960 | mxt_dump_message(data, message); | |
961 | } | |
962 | ||
963 | return 1; | |
4cf51c38 JS |
964 | } |
965 | ||
9d8dc3e5 | 966 | static int mxt_read_and_process_messages(struct mxt_data *data, u8 count) |
4cf51c38 | 967 | { |
4cf51c38 | 968 | struct device *dev = &data->client->dev; |
b9b05a89 | 969 | int ret; |
9d8dc3e5 ND |
970 | int i; |
971 | u8 num_valid = 0; | |
972 | ||
973 | /* Safety check for msg_buf */ | |
974 | if (count > data->max_reportid) | |
975 | return -EINVAL; | |
4cf51c38 | 976 | |
9d8dc3e5 | 977 | /* Process remaining messages if necessary */ |
b9b05a89 | 978 | ret = __mxt_read_reg(data->client, data->T5_address, |
9d8dc3e5 | 979 | data->T5_msg_size * count, data->msg_buf); |
b9b05a89 | 980 | if (ret) { |
9d8dc3e5 | 981 | dev_err(dev, "Failed to read %u messages (%d)\n", count, ret); |
b9b05a89 ND |
982 | return ret; |
983 | } | |
4cf51c38 | 984 | |
9d8dc3e5 ND |
985 | for (i = 0; i < count; i++) { |
986 | ret = mxt_proc_message(data, | |
987 | data->msg_buf + data->T5_msg_size * i); | |
988 | ||
989 | if (ret == 1) | |
990 | num_valid++; | |
991 | } | |
992 | ||
993 | /* return number of messages read */ | |
994 | return num_valid; | |
b9b05a89 | 995 | } |
4cf51c38 | 996 | |
9d8dc3e5 | 997 | static irqreturn_t mxt_process_messages_t44(struct mxt_data *data) |
b9b05a89 | 998 | { |
9d8dc3e5 | 999 | struct device *dev = &data->client->dev; |
b9b05a89 | 1000 | int ret; |
9d8dc3e5 | 1001 | u8 count, num_left; |
4cf51c38 | 1002 | |
9d8dc3e5 ND |
1003 | /* Read T44 and T5 together */ |
1004 | ret = __mxt_read_reg(data->client, data->T44_address, | |
1005 | data->T5_msg_size + 1, data->msg_buf); | |
1006 | if (ret) { | |
1007 | dev_err(dev, "Failed to read T44 and T5 (%d)\n", ret); | |
1008 | return IRQ_NONE; | |
1009 | } | |
1010 | ||
1011 | count = data->msg_buf[0]; | |
1012 | ||
507584e2 ND |
1013 | /* |
1014 | * This condition may be caused by the CHG line being configured in | |
1015 | * Mode 0. It results in unnecessary I2C operations but it is benign. | |
1016 | */ | |
1017 | if (count == 0) | |
9d8dc3e5 | 1018 | return IRQ_NONE; |
507584e2 ND |
1019 | |
1020 | if (count > data->max_reportid) { | |
1021 | dev_warn(dev, "T44 count %d exceeded max report id\n", count); | |
9d8dc3e5 ND |
1022 | count = data->max_reportid; |
1023 | } | |
1024 | ||
1025 | /* Process first message */ | |
1026 | ret = mxt_proc_message(data, data->msg_buf + 1); | |
1027 | if (ret < 0) { | |
1028 | dev_warn(dev, "Unexpected invalid message\n"); | |
1029 | return IRQ_NONE; | |
1030 | } | |
1031 | ||
1032 | num_left = count - 1; | |
1033 | ||
1034 | /* Process remaining messages if necessary */ | |
1035 | if (num_left) { | |
1036 | ret = mxt_read_and_process_messages(data, num_left); | |
b9b05a89 | 1037 | if (ret < 0) |
9d8dc3e5 ND |
1038 | goto end; |
1039 | else if (ret != num_left) | |
1040 | dev_warn(dev, "Unexpected invalid message\n"); | |
1041 | } | |
1042 | ||
1043 | end: | |
1044 | if (data->update_input) { | |
1045 | mxt_input_sync(data); | |
1046 | data->update_input = false; | |
1047 | } | |
1048 | ||
1049 | return IRQ_HANDLED; | |
1050 | } | |
1051 | ||
1052 | static int mxt_process_messages_until_invalid(struct mxt_data *data) | |
1053 | { | |
1054 | struct device *dev = &data->client->dev; | |
1055 | int count, read; | |
1056 | u8 tries = 2; | |
1057 | ||
1058 | count = data->max_reportid; | |
1059 | ||
1060 | /* Read messages until we force an invalid */ | |
1061 | do { | |
1062 | read = mxt_read_and_process_messages(data, count); | |
1063 | if (read < count) | |
1064 | return 0; | |
1065 | } while (--tries); | |
1066 | ||
1067 | if (data->update_input) { | |
1068 | mxt_input_sync(data); | |
1069 | data->update_input = false; | |
1070 | } | |
1071 | ||
1072 | dev_err(dev, "CHG pin isn't cleared\n"); | |
1073 | return -EBUSY; | |
1074 | } | |
1075 | ||
1076 | static irqreturn_t mxt_process_messages(struct mxt_data *data) | |
1077 | { | |
1078 | int total_handled, num_handled; | |
1079 | u8 count = data->last_message_count; | |
1080 | ||
1081 | if (count < 1 || count > data->max_reportid) | |
1082 | count = 1; | |
1083 | ||
1084 | /* include final invalid message */ | |
1085 | total_handled = mxt_read_and_process_messages(data, count + 1); | |
1086 | if (total_handled < 0) | |
1087 | return IRQ_NONE; | |
1088 | /* if there were invalid messages, then we are done */ | |
1089 | else if (total_handled <= count) | |
1090 | goto update_count; | |
1091 | ||
1092 | /* keep reading two msgs until one is invalid or reportid limit */ | |
1093 | do { | |
1094 | num_handled = mxt_read_and_process_messages(data, 2); | |
1095 | if (num_handled < 0) | |
b9b05a89 | 1096 | return IRQ_NONE; |
9d8dc3e5 ND |
1097 | |
1098 | total_handled += num_handled; | |
1099 | ||
1100 | if (num_handled < 2) | |
1101 | break; | |
1102 | } while (total_handled < data->num_touchids); | |
1103 | ||
1104 | update_count: | |
1105 | data->last_message_count = total_handled; | |
b9b05a89 ND |
1106 | |
1107 | if (data->update_input) { | |
b735fbe0 | 1108 | mxt_input_sync(data); |
b9b05a89 ND |
1109 | data->update_input = false; |
1110 | } | |
64464ae8 | 1111 | |
4cf51c38 JS |
1112 | return IRQ_HANDLED; |
1113 | } | |
1114 | ||
d79e7e47 BL |
1115 | static irqreturn_t mxt_interrupt(int irq, void *dev_id) |
1116 | { | |
1117 | struct mxt_data *data = dev_id; | |
1118 | ||
1119 | if (data->in_bootloader) { | |
1120 | /* bootloader state transition completion */ | |
1121 | complete(&data->bl_completion); | |
1122 | return IRQ_HANDLED; | |
1123 | } | |
1124 | ||
dd24dcf5 ND |
1125 | if (!data->object_table) |
1126 | return IRQ_HANDLED; | |
1127 | ||
9d8dc3e5 ND |
1128 | if (data->T44_address) { |
1129 | return mxt_process_messages_t44(data); | |
1130 | } else { | |
1131 | return mxt_process_messages(data); | |
1132 | } | |
d79e7e47 BL |
1133 | } |
1134 | ||
a4a2ef46 IV |
1135 | static int mxt_t6_command(struct mxt_data *data, u16 cmd_offset, |
1136 | u8 value, bool wait) | |
1137 | { | |
1138 | u16 reg; | |
1139 | u8 command_register; | |
1140 | int timeout_counter = 0; | |
1141 | int ret; | |
1142 | ||
1143 | reg = data->T6_address + cmd_offset; | |
1144 | ||
1145 | ret = mxt_write_reg(data->client, reg, value); | |
1146 | if (ret) | |
1147 | return ret; | |
1148 | ||
1149 | if (!wait) | |
1150 | return 0; | |
1151 | ||
1152 | do { | |
1153 | msleep(20); | |
1154 | ret = __mxt_read_reg(data->client, reg, 1, &command_register); | |
1155 | if (ret) | |
1156 | return ret; | |
1157 | } while (command_register != 0 && timeout_counter++ <= 100); | |
1158 | ||
1159 | if (timeout_counter > 100) { | |
1160 | dev_err(&data->client->dev, "Command failed!\n"); | |
1161 | return -EIO; | |
1162 | } | |
1163 | ||
1164 | return 0; | |
1165 | } | |
1166 | ||
eb43335c ND |
1167 | static int mxt_acquire_irq(struct mxt_data *data) |
1168 | { | |
1169 | int error; | |
1170 | ||
1171 | enable_irq(data->irq); | |
1172 | ||
1173 | error = mxt_process_messages_until_invalid(data); | |
1174 | if (error) | |
1175 | return error; | |
1176 | ||
1177 | return 0; | |
1178 | } | |
1179 | ||
a4a2ef46 IV |
1180 | static int mxt_soft_reset(struct mxt_data *data) |
1181 | { | |
1182 | struct device *dev = &data->client->dev; | |
1183 | int ret = 0; | |
1184 | ||
885f3fb9 ND |
1185 | dev_info(dev, "Resetting device\n"); |
1186 | ||
1187 | disable_irq(data->irq); | |
a4a2ef46 IV |
1188 | |
1189 | reinit_completion(&data->reset_completion); | |
1190 | ||
1191 | ret = mxt_t6_command(data, MXT_COMMAND_RESET, MXT_RESET_VALUE, false); | |
1192 | if (ret) | |
1193 | return ret; | |
1194 | ||
885f3fb9 ND |
1195 | /* Ignore CHG line for 100ms after reset */ |
1196 | msleep(100); | |
1197 | ||
eb43335c | 1198 | mxt_acquire_irq(data); |
885f3fb9 | 1199 | |
a4a2ef46 IV |
1200 | ret = mxt_wait_for_completion(data, &data->reset_completion, |
1201 | MXT_RESET_TIMEOUT); | |
1202 | if (ret) | |
1203 | return ret; | |
1204 | ||
1205 | return 0; | |
1206 | } | |
1207 | ||
c3f78043 ND |
1208 | static void mxt_update_crc(struct mxt_data *data, u8 cmd, u8 value) |
1209 | { | |
1210 | /* | |
1211 | * On failure, CRC is set to 0 and config will always be | |
1212 | * downloaded. | |
1213 | */ | |
1214 | data->config_crc = 0; | |
1215 | reinit_completion(&data->crc_completion); | |
1216 | ||
1217 | mxt_t6_command(data, cmd, value, true); | |
1218 | ||
1219 | /* | |
1220 | * Wait for crc message. On failure, CRC is set to 0 and config will | |
1221 | * always be downloaded. | |
1222 | */ | |
1223 | mxt_wait_for_completion(data, &data->crc_completion, MXT_CRC_TIMEOUT); | |
1224 | } | |
1225 | ||
4ce6fa01 ND |
1226 | static void mxt_calc_crc24(u32 *crc, u8 firstbyte, u8 secondbyte) |
1227 | { | |
1228 | static const unsigned int crcpoly = 0x80001B; | |
1229 | u32 result; | |
1230 | u32 data_word; | |
1231 | ||
1232 | data_word = (secondbyte << 8) | firstbyte; | |
1233 | result = ((*crc << 1) ^ data_word); | |
1234 | ||
1235 | if (result & 0x1000000) | |
1236 | result ^= crcpoly; | |
1237 | ||
1238 | *crc = result; | |
1239 | } | |
1240 | ||
1241 | static u32 mxt_calculate_crc(u8 *base, off_t start_off, off_t end_off) | |
1242 | { | |
1243 | u32 crc = 0; | |
1244 | u8 *ptr = base + start_off; | |
1245 | u8 *last_val = base + end_off - 1; | |
1246 | ||
1247 | if (end_off < start_off) | |
1248 | return -EINVAL; | |
1249 | ||
1250 | while (ptr < last_val) { | |
1251 | mxt_calc_crc24(&crc, *ptr, *(ptr + 1)); | |
1252 | ptr += 2; | |
1253 | } | |
1254 | ||
1255 | /* if len is odd, fill the last byte with 0 */ | |
1256 | if (ptr == last_val) | |
1257 | mxt_calc_crc24(&crc, *ptr, 0); | |
1258 | ||
1259 | /* Mask to 24-bit */ | |
1260 | crc &= 0x00FFFFFF; | |
1261 | ||
1262 | return crc; | |
1263 | } | |
1264 | ||
efdbd7ae DT |
1265 | static int mxt_prepare_cfg_mem(struct mxt_data *data, |
1266 | const struct firmware *cfg, | |
1267 | unsigned int data_pos, | |
1268 | unsigned int cfg_start_ofs, | |
1269 | u8 *config_mem, | |
1270 | size_t config_mem_size) | |
1271 | { | |
1272 | struct device *dev = &data->client->dev; | |
1273 | struct mxt_object *object; | |
1274 | unsigned int type, instance, size, byte_offset; | |
1275 | int offset; | |
1276 | int ret; | |
1277 | int i; | |
1278 | u16 reg; | |
1279 | u8 val; | |
1280 | ||
1281 | while (data_pos < cfg->size) { | |
1282 | /* Read type, instance, length */ | |
1283 | ret = sscanf(cfg->data + data_pos, "%x %x %x%n", | |
1284 | &type, &instance, &size, &offset); | |
1285 | if (ret == 0) { | |
1286 | /* EOF */ | |
1287 | break; | |
1288 | } else if (ret != 3) { | |
1289 | dev_err(dev, "Bad format: failed to parse object\n"); | |
1290 | return -EINVAL; | |
1291 | } | |
1292 | data_pos += offset; | |
1293 | ||
1294 | object = mxt_get_object(data, type); | |
1295 | if (!object) { | |
1296 | /* Skip object */ | |
1297 | for (i = 0; i < size; i++) { | |
1298 | ret = sscanf(cfg->data + data_pos, "%hhx%n", | |
041fa159 DT |
1299 | &val, &offset); |
1300 | if (ret != 1) { | |
1301 | dev_err(dev, "Bad format in T%d at %d\n", | |
1302 | type, i); | |
1303 | return -EINVAL; | |
1304 | } | |
efdbd7ae DT |
1305 | data_pos += offset; |
1306 | } | |
1307 | continue; | |
1308 | } | |
1309 | ||
1310 | if (size > mxt_obj_size(object)) { | |
1311 | /* | |
1312 | * Either we are in fallback mode due to wrong | |
1313 | * config or config from a later fw version, | |
1314 | * or the file is corrupt or hand-edited. | |
1315 | */ | |
1316 | dev_warn(dev, "Discarding %zu byte(s) in T%u\n", | |
1317 | size - mxt_obj_size(object), type); | |
1318 | } else if (mxt_obj_size(object) > size) { | |
1319 | /* | |
1320 | * If firmware is upgraded, new bytes may be added to | |
1321 | * end of objects. It is generally forward compatible | |
1322 | * to zero these bytes - previous behaviour will be | |
1323 | * retained. However this does invalidate the CRC and | |
1324 | * will force fallback mode until the configuration is | |
1325 | * updated. We warn here but do nothing else - the | |
1326 | * malloc has zeroed the entire configuration. | |
1327 | */ | |
1328 | dev_warn(dev, "Zeroing %zu byte(s) in T%d\n", | |
1329 | mxt_obj_size(object) - size, type); | |
1330 | } | |
1331 | ||
1332 | if (instance >= mxt_obj_instances(object)) { | |
1333 | dev_err(dev, "Object instances exceeded!\n"); | |
1334 | return -EINVAL; | |
1335 | } | |
1336 | ||
1337 | reg = object->start_address + mxt_obj_size(object) * instance; | |
1338 | ||
1339 | for (i = 0; i < size; i++) { | |
1340 | ret = sscanf(cfg->data + data_pos, "%hhx%n", | |
1341 | &val, | |
1342 | &offset); | |
1343 | if (ret != 1) { | |
041fa159 DT |
1344 | dev_err(dev, "Bad format in T%d at %d\n", |
1345 | type, i); | |
efdbd7ae DT |
1346 | return -EINVAL; |
1347 | } | |
1348 | data_pos += offset; | |
1349 | ||
1350 | if (i > mxt_obj_size(object)) | |
1351 | continue; | |
1352 | ||
1353 | byte_offset = reg + i - cfg_start_ofs; | |
1354 | ||
041fa159 | 1355 | if (byte_offset >= 0 && byte_offset < config_mem_size) { |
efdbd7ae DT |
1356 | *(config_mem + byte_offset) = val; |
1357 | } else { | |
1358 | dev_err(dev, "Bad object: reg:%d, T%d, ofs=%d\n", | |
1359 | reg, object->type, byte_offset); | |
1360 | return -EINVAL; | |
1361 | } | |
1362 | } | |
1363 | } | |
1364 | ||
1365 | return 0; | |
1366 | } | |
1367 | ||
1368 | static int mxt_upload_cfg_mem(struct mxt_data *data, unsigned int cfg_start, | |
1369 | u8 *config_mem, size_t config_mem_size) | |
1370 | { | |
1371 | unsigned int byte_offset = 0; | |
1372 | int error; | |
1373 | ||
1374 | /* Write configuration as blocks */ | |
1375 | while (byte_offset < config_mem_size) { | |
1376 | unsigned int size = config_mem_size - byte_offset; | |
1377 | ||
1378 | if (size > MXT_MAX_BLOCK_WRITE) | |
1379 | size = MXT_MAX_BLOCK_WRITE; | |
1380 | ||
1381 | error = __mxt_write_reg(data->client, | |
1382 | cfg_start + byte_offset, | |
1383 | size, config_mem + byte_offset); | |
1384 | if (error) { | |
1385 | dev_err(&data->client->dev, | |
1386 | "Config write error, ret=%d\n", error); | |
1387 | return error; | |
1388 | } | |
1389 | ||
1390 | byte_offset += size; | |
1391 | } | |
1392 | ||
1393 | return 0; | |
1394 | } | |
1395 | ||
7f3884f7 ND |
1396 | static int mxt_init_t7_power_cfg(struct mxt_data *data); |
1397 | ||
50a77c65 ND |
1398 | /* |
1399 | * mxt_update_cfg - download configuration to chip | |
1400 | * | |
1401 | * Atmel Raw Config File Format | |
1402 | * | |
1403 | * The first four lines of the raw config file contain: | |
1404 | * 1) Version | |
1405 | * 2) Chip ID Information (first 7 bytes of device memory) | |
1406 | * 3) Chip Information Block 24-bit CRC Checksum | |
1407 | * 4) Chip Configuration 24-bit CRC Checksum | |
1408 | * | |
1409 | * The rest of the file consists of one line per object instance: | |
1410 | * <TYPE> <INSTANCE> <SIZE> <CONTENTS> | |
1411 | * | |
1412 | * <TYPE> - 2-byte object type as hex | |
1413 | * <INSTANCE> - 2-byte object instance number as hex | |
1414 | * <SIZE> - 2-byte object size as hex | |
1415 | * <CONTENTS> - array of <SIZE> 1-byte hex values | |
1416 | */ | |
1417 | static int mxt_update_cfg(struct mxt_data *data, const struct firmware *cfg) | |
4cf51c38 | 1418 | { |
4cf51c38 | 1419 | struct device *dev = &data->client->dev; |
50a77c65 | 1420 | struct mxt_info cfg_info; |
cf94bc09 | 1421 | int ret; |
50a77c65 | 1422 | int offset; |
4ce6fa01 | 1423 | int data_pos; |
50a77c65 | 1424 | int i; |
4ce6fa01 ND |
1425 | int cfg_start_ofs; |
1426 | u32 info_crc, config_crc, calculated_crc; | |
1427 | u8 *config_mem; | |
1428 | size_t config_mem_size; | |
4cf51c38 | 1429 | |
50a77c65 ND |
1430 | mxt_update_crc(data, MXT_COMMAND_REPORTALL, 1); |
1431 | ||
1432 | if (strncmp(cfg->data, MXT_CFG_MAGIC, strlen(MXT_CFG_MAGIC))) { | |
1433 | dev_err(dev, "Unrecognised config file\n"); | |
efdbd7ae | 1434 | return -EINVAL; |
4cf51c38 JS |
1435 | } |
1436 | ||
4ce6fa01 | 1437 | data_pos = strlen(MXT_CFG_MAGIC); |
50a77c65 ND |
1438 | |
1439 | /* Load information block and check */ | |
1440 | for (i = 0; i < sizeof(struct mxt_info); i++) { | |
4ce6fa01 | 1441 | ret = sscanf(cfg->data + data_pos, "%hhx%n", |
50a77c65 ND |
1442 | (unsigned char *)&cfg_info + i, |
1443 | &offset); | |
1444 | if (ret != 1) { | |
1445 | dev_err(dev, "Bad format\n"); | |
efdbd7ae | 1446 | return -EINVAL; |
50a77c65 | 1447 | } |
c3f78043 | 1448 | |
4ce6fa01 | 1449 | data_pos += offset; |
c3f78043 ND |
1450 | } |
1451 | ||
50a77c65 ND |
1452 | if (cfg_info.family_id != data->info.family_id) { |
1453 | dev_err(dev, "Family ID mismatch!\n"); | |
efdbd7ae | 1454 | return -EINVAL; |
50a77c65 | 1455 | } |
c3f78043 | 1456 | |
50a77c65 ND |
1457 | if (cfg_info.variant_id != data->info.variant_id) { |
1458 | dev_err(dev, "Variant ID mismatch!\n"); | |
efdbd7ae | 1459 | return -EINVAL; |
50a77c65 | 1460 | } |
4cf51c38 | 1461 | |
4ce6fa01 ND |
1462 | /* Read CRCs */ |
1463 | ret = sscanf(cfg->data + data_pos, "%x%n", &info_crc, &offset); | |
50a77c65 ND |
1464 | if (ret != 1) { |
1465 | dev_err(dev, "Bad format: failed to parse Info CRC\n"); | |
efdbd7ae | 1466 | return -EINVAL; |
50a77c65 | 1467 | } |
4ce6fa01 | 1468 | data_pos += offset; |
50a77c65 | 1469 | |
4ce6fa01 | 1470 | ret = sscanf(cfg->data + data_pos, "%x%n", &config_crc, &offset); |
50a77c65 ND |
1471 | if (ret != 1) { |
1472 | dev_err(dev, "Bad format: failed to parse Config CRC\n"); | |
efdbd7ae | 1473 | return -EINVAL; |
50a77c65 | 1474 | } |
4ce6fa01 | 1475 | data_pos += offset; |
50a77c65 | 1476 | |
4ce6fa01 ND |
1477 | /* |
1478 | * The Info Block CRC is calculated over mxt_info and the object | |
1479 | * table. If it does not match then we are trying to load the | |
1480 | * configuration from a different chip or firmware version, so | |
1481 | * the configuration CRC is invalid anyway. | |
1482 | */ | |
1483 | if (info_crc == data->info_crc) { | |
1484 | if (config_crc == 0 || data->config_crc == 0) { | |
1485 | dev_info(dev, "CRC zero, attempting to apply config\n"); | |
1486 | } else if (config_crc == data->config_crc) { | |
1487 | dev_dbg(dev, "Config CRC 0x%06X: OK\n", | |
1488 | data->config_crc); | |
efdbd7ae | 1489 | return 0; |
4ce6fa01 ND |
1490 | } else { |
1491 | dev_info(dev, "Config CRC 0x%06X: does not match file 0x%06X\n", | |
1492 | data->config_crc, config_crc); | |
1493 | } | |
1494 | } else { | |
1495 | dev_warn(dev, | |
1496 | "Warning: Info CRC error - device=0x%06X file=0x%06X\n", | |
1497 | data->info_crc, info_crc); | |
50a77c65 ND |
1498 | } |
1499 | ||
4ce6fa01 ND |
1500 | /* Malloc memory to store configuration */ |
1501 | cfg_start_ofs = MXT_OBJECT_START + | |
1502 | data->info.object_num * sizeof(struct mxt_object) + | |
1503 | MXT_INFO_CHECKSUM_SIZE; | |
1504 | config_mem_size = data->mem_size - cfg_start_ofs; | |
1505 | config_mem = kzalloc(config_mem_size, GFP_KERNEL); | |
1506 | if (!config_mem) { | |
1507 | dev_err(dev, "Failed to allocate memory\n"); | |
efdbd7ae | 1508 | return -ENOMEM; |
4ce6fa01 | 1509 | } |
50a77c65 | 1510 | |
efdbd7ae DT |
1511 | ret = mxt_prepare_cfg_mem(data, cfg, data_pos, cfg_start_ofs, |
1512 | config_mem, config_mem_size); | |
1513 | if (ret) | |
1514 | goto release_mem; | |
50a77c65 | 1515 | |
4ce6fa01 ND |
1516 | /* Calculate crc of the received configs (not the raw config file) */ |
1517 | if (data->T7_address < cfg_start_ofs) { | |
1518 | dev_err(dev, "Bad T7 address, T7addr = %x, config offset %x\n", | |
1519 | data->T7_address, cfg_start_ofs); | |
1520 | ret = 0; | |
1521 | goto release_mem; | |
1522 | } | |
50a77c65 | 1523 | |
4ce6fa01 ND |
1524 | calculated_crc = mxt_calculate_crc(config_mem, |
1525 | data->T7_address - cfg_start_ofs, | |
1526 | config_mem_size); | |
1527 | ||
efdbd7ae | 1528 | if (config_crc > 0 && config_crc != calculated_crc) |
4ce6fa01 ND |
1529 | dev_warn(dev, "Config CRC error, calculated=%06X, file=%06X\n", |
1530 | calculated_crc, config_crc); | |
1531 | ||
efdbd7ae DT |
1532 | ret = mxt_upload_cfg_mem(data, cfg_start_ofs, |
1533 | config_mem, config_mem_size); | |
1534 | if (ret) | |
1535 | goto release_mem; | |
4cf51c38 | 1536 | |
c3f78043 ND |
1537 | mxt_update_crc(data, MXT_COMMAND_BACKUPNV, MXT_BACKUP_VALUE); |
1538 | ||
1539 | ret = mxt_soft_reset(data); | |
1540 | if (ret) | |
4ce6fa01 | 1541 | goto release_mem; |
c3f78043 ND |
1542 | |
1543 | dev_info(dev, "Config successfully updated\n"); | |
1544 | ||
7f3884f7 ND |
1545 | /* T7 config may have changed */ |
1546 | mxt_init_t7_power_cfg(data); | |
1547 | ||
4ce6fa01 ND |
1548 | release_mem: |
1549 | kfree(config_mem); | |
50a77c65 | 1550 | return ret; |
4cf51c38 JS |
1551 | } |
1552 | ||
7686b108 | 1553 | static int mxt_get_info(struct mxt_data *data) |
4cf51c38 JS |
1554 | { |
1555 | struct i2c_client *client = data->client; | |
7686b108 | 1556 | struct mxt_info *info = &data->info; |
4cf51c38 | 1557 | int error; |
4cf51c38 | 1558 | |
23003a84 | 1559 | /* Read 7-byte info block starting at address 0 */ |
146c6a66 | 1560 | error = __mxt_read_reg(client, 0, sizeof(*info), info); |
4cf51c38 JS |
1561 | if (error) |
1562 | return error; | |
4cf51c38 JS |
1563 | |
1564 | return 0; | |
1565 | } | |
1566 | ||
58e4aeee | 1567 | static void mxt_free_input_device(struct mxt_data *data) |
5f3f9bc2 | 1568 | { |
58e4aeee SW |
1569 | if (data->input_dev) { |
1570 | input_unregister_device(data->input_dev); | |
1571 | data->input_dev = NULL; | |
1572 | } | |
1573 | } | |
5f3f9bc2 | 1574 | |
58e4aeee SW |
1575 | static void mxt_free_object_table(struct mxt_data *data) |
1576 | { | |
ecfdd7e2 ND |
1577 | #ifdef CONFIG_TOUCHSCREEN_ATMEL_MXT_T37 |
1578 | video_unregister_device(&data->dbg.vdev); | |
1579 | v4l2_device_unregister(&data->dbg.v4l2); | |
1580 | #endif | |
1581 | ||
5f3f9bc2 ND |
1582 | kfree(data->object_table); |
1583 | data->object_table = NULL; | |
1584 | kfree(data->msg_buf); | |
1585 | data->msg_buf = NULL; | |
b9b05a89 | 1586 | data->T5_address = 0; |
5f3f9bc2 ND |
1587 | data->T5_msg_size = 0; |
1588 | data->T6_reportid = 0; | |
1589 | data->T7_address = 0; | |
1590 | data->T9_reportid_min = 0; | |
1591 | data->T9_reportid_max = 0; | |
1592 | data->T19_reportid = 0; | |
9d8dc3e5 | 1593 | data->T44_address = 0; |
b23157dc ND |
1594 | data->T100_reportid_min = 0; |
1595 | data->T100_reportid_max = 0; | |
9d8dc3e5 | 1596 | data->max_reportid = 0; |
5f3f9bc2 ND |
1597 | } |
1598 | ||
7686b108 | 1599 | static int mxt_get_object_table(struct mxt_data *data) |
4cf51c38 | 1600 | { |
333e5a9a DK |
1601 | struct i2c_client *client = data->client; |
1602 | size_t table_size; | |
dd24dcf5 | 1603 | struct mxt_object *object_table; |
4cf51c38 JS |
1604 | int error; |
1605 | int i; | |
333e5a9a | 1606 | u8 reportid; |
4ce6fa01 | 1607 | u16 end_address; |
333e5a9a DK |
1608 | |
1609 | table_size = data->info.object_num * sizeof(struct mxt_object); | |
dd24dcf5 ND |
1610 | object_table = kzalloc(table_size, GFP_KERNEL); |
1611 | if (!object_table) { | |
1612 | dev_err(&data->client->dev, "Failed to allocate memory\n"); | |
1613 | return -ENOMEM; | |
1614 | } | |
1615 | ||
333e5a9a | 1616 | error = __mxt_read_reg(client, MXT_OBJECT_START, table_size, |
dd24dcf5 ND |
1617 | object_table); |
1618 | if (error) { | |
1619 | kfree(object_table); | |
333e5a9a | 1620 | return error; |
dd24dcf5 | 1621 | } |
4cf51c38 | 1622 | |
333e5a9a DK |
1623 | /* Valid Report IDs start counting from 1 */ |
1624 | reportid = 1; | |
4ce6fa01 | 1625 | data->mem_size = 0; |
4cf51c38 | 1626 | for (i = 0; i < data->info.object_num; i++) { |
dd24dcf5 | 1627 | struct mxt_object *object = object_table + i; |
333e5a9a | 1628 | u8 min_id, max_id; |
4cf51c38 | 1629 | |
333e5a9a | 1630 | le16_to_cpus(&object->start_address); |
4cf51c38 JS |
1631 | |
1632 | if (object->num_report_ids) { | |
333e5a9a | 1633 | min_id = reportid; |
4cf51c38 | 1634 | reportid += object->num_report_ids * |
1e0c0c5b | 1635 | mxt_obj_instances(object); |
333e5a9a DK |
1636 | max_id = reportid - 1; |
1637 | } else { | |
1638 | min_id = 0; | |
1639 | max_id = 0; | |
1640 | } | |
1641 | ||
1642 | dev_dbg(&data->client->dev, | |
7bed6805 | 1643 | "T%u Start:%u Size:%zu Instances:%zu Report IDs:%u-%u\n", |
1e0c0c5b DK |
1644 | object->type, object->start_address, |
1645 | mxt_obj_size(object), mxt_obj_instances(object), | |
1646 | min_id, max_id); | |
333e5a9a DK |
1647 | |
1648 | switch (object->type) { | |
5f3f9bc2 | 1649 | case MXT_GEN_MESSAGE_T5: |
437d4f37 ND |
1650 | if (data->info.family_id == 0x80 && |
1651 | data->info.version < 0x20) { | |
9d8dc3e5 | 1652 | /* |
437d4f37 ND |
1653 | * On mXT224 firmware versions prior to V2.0 |
1654 | * read and discard unused CRC byte otherwise | |
1655 | * DMA reads are misaligned. | |
9d8dc3e5 ND |
1656 | */ |
1657 | data->T5_msg_size = mxt_obj_size(object); | |
1658 | } else { | |
1659 | /* CRC not enabled, so skip last byte */ | |
1660 | data->T5_msg_size = mxt_obj_size(object) - 1; | |
1661 | } | |
b9b05a89 | 1662 | data->T5_address = object->start_address; |
041fa159 | 1663 | break; |
fdf80421 DK |
1664 | case MXT_GEN_COMMAND_T6: |
1665 | data->T6_reportid = min_id; | |
a4a2ef46 | 1666 | data->T6_address = object->start_address; |
fdf80421 | 1667 | break; |
4ce6fa01 ND |
1668 | case MXT_GEN_POWER_T7: |
1669 | data->T7_address = object->start_address; | |
1670 | break; | |
333e5a9a | 1671 | case MXT_TOUCH_MULTI_T9: |
b23157dc | 1672 | data->multitouch = MXT_TOUCH_MULTI_T9; |
333e5a9a DK |
1673 | data->T9_reportid_min = min_id; |
1674 | data->T9_reportid_max = max_id; | |
9d8dc3e5 ND |
1675 | data->num_touchids = object->num_report_ids |
1676 | * mxt_obj_instances(object); | |
1677 | break; | |
1678 | case MXT_SPT_MESSAGECOUNT_T44: | |
1679 | data->T44_address = object->start_address; | |
333e5a9a | 1680 | break; |
22dfab7f DK |
1681 | case MXT_SPT_GPIOPWM_T19: |
1682 | data->T19_reportid = min_id; | |
1683 | break; | |
b23157dc ND |
1684 | case MXT_TOUCH_MULTITOUCHSCREEN_T100: |
1685 | data->multitouch = MXT_TOUCH_MULTITOUCHSCREEN_T100; | |
1686 | data->T100_reportid_min = min_id; | |
1687 | data->T100_reportid_max = max_id; | |
1688 | /* first two report IDs reserved */ | |
1689 | data->num_touchids = object->num_report_ids - 2; | |
1690 | break; | |
4cf51c38 | 1691 | } |
4ce6fa01 ND |
1692 | |
1693 | end_address = object->start_address | |
1694 | + mxt_obj_size(object) * mxt_obj_instances(object) - 1; | |
1695 | ||
1696 | if (end_address >= data->mem_size) | |
1697 | data->mem_size = end_address + 1; | |
4cf51c38 JS |
1698 | } |
1699 | ||
9d8dc3e5 ND |
1700 | /* Store maximum reportid */ |
1701 | data->max_reportid = reportid; | |
1702 | ||
1703 | /* If T44 exists, T5 position has to be directly after */ | |
1704 | if (data->T44_address && (data->T5_address != data->T44_address + 1)) { | |
1705 | dev_err(&client->dev, "Invalid T44 position\n"); | |
1706 | error = -EINVAL; | |
1707 | goto free_object_table; | |
1708 | } | |
1709 | ||
1710 | data->msg_buf = kcalloc(data->max_reportid, | |
1711 | data->T5_msg_size, GFP_KERNEL); | |
5f3f9bc2 ND |
1712 | if (!data->msg_buf) { |
1713 | dev_err(&client->dev, "Failed to allocate message buffer\n"); | |
1714 | error = -ENOMEM; | |
1715 | goto free_object_table; | |
1716 | } | |
1717 | ||
dd24dcf5 ND |
1718 | data->object_table = object_table; |
1719 | ||
4cf51c38 | 1720 | return 0; |
4cf51c38 | 1721 | |
5f3f9bc2 ND |
1722 | free_object_table: |
1723 | mxt_free_object_table(data); | |
1724 | return error; | |
7d4fa100 DK |
1725 | } |
1726 | ||
61dc1aba ND |
1727 | static int mxt_read_t9_resolution(struct mxt_data *data) |
1728 | { | |
1729 | struct i2c_client *client = data->client; | |
1730 | int error; | |
1731 | struct t9_range range; | |
1732 | unsigned char orient; | |
1733 | struct mxt_object *object; | |
1734 | ||
1735 | object = mxt_get_object(data, MXT_TOUCH_MULTI_T9); | |
1736 | if (!object) | |
1737 | return -EINVAL; | |
1738 | ||
2786489f ND |
1739 | error = __mxt_read_reg(client, |
1740 | object->start_address + MXT_T9_XSIZE, | |
1741 | sizeof(data->xsize), &data->xsize); | |
1742 | if (error) | |
1743 | return error; | |
1744 | ||
1745 | error = __mxt_read_reg(client, | |
1746 | object->start_address + MXT_T9_YSIZE, | |
1747 | sizeof(data->ysize), &data->ysize); | |
1748 | if (error) | |
1749 | return error; | |
1750 | ||
61dc1aba ND |
1751 | error = __mxt_read_reg(client, |
1752 | object->start_address + MXT_T9_RANGE, | |
1753 | sizeof(range), &range); | |
1754 | if (error) | |
1755 | return error; | |
1756 | ||
1c0276d5 ND |
1757 | data->max_x = get_unaligned_le16(&range.x); |
1758 | data->max_y = get_unaligned_le16(&range.y); | |
61dc1aba ND |
1759 | |
1760 | error = __mxt_read_reg(client, | |
1761 | object->start_address + MXT_T9_ORIENT, | |
1762 | 1, &orient); | |
1763 | if (error) | |
1764 | return error; | |
1765 | ||
1c0276d5 | 1766 | data->xy_switch = orient & MXT_T9_ORIENT_SWITCH; |
de601f71 ND |
1767 | data->invertx = orient & MXT_T9_ORIENT_INVERTX; |
1768 | data->inverty = orient & MXT_T9_ORIENT_INVERTY; | |
61dc1aba ND |
1769 | |
1770 | return 0; | |
1771 | } | |
1772 | ||
b23157dc ND |
1773 | static int mxt_read_t100_config(struct mxt_data *data) |
1774 | { | |
1775 | struct i2c_client *client = data->client; | |
1776 | int error; | |
1777 | struct mxt_object *object; | |
1778 | u16 range_x, range_y; | |
1779 | u8 cfg, tchaux; | |
1780 | u8 aux; | |
1781 | ||
1782 | object = mxt_get_object(data, MXT_TOUCH_MULTITOUCHSCREEN_T100); | |
1783 | if (!object) | |
1784 | return -EINVAL; | |
1785 | ||
1c0276d5 | 1786 | /* read touchscreen dimensions */ |
b23157dc ND |
1787 | error = __mxt_read_reg(client, |
1788 | object->start_address + MXT_T100_XRANGE, | |
1789 | sizeof(range_x), &range_x); | |
1790 | if (error) | |
1791 | return error; | |
1792 | ||
1c0276d5 | 1793 | data->max_x = get_unaligned_le16(&range_x); |
b23157dc ND |
1794 | |
1795 | error = __mxt_read_reg(client, | |
1796 | object->start_address + MXT_T100_YRANGE, | |
1797 | sizeof(range_y), &range_y); | |
1798 | if (error) | |
1799 | return error; | |
1800 | ||
1c0276d5 | 1801 | data->max_y = get_unaligned_le16(&range_y); |
b23157dc | 1802 | |
2786489f ND |
1803 | error = __mxt_read_reg(client, |
1804 | object->start_address + MXT_T100_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_T100_YSIZE, | |
1811 | sizeof(data->ysize), &data->ysize); | |
1812 | if (error) | |
1813 | return error; | |
1814 | ||
1c0276d5 | 1815 | /* read orientation config */ |
b23157dc ND |
1816 | error = __mxt_read_reg(client, |
1817 | object->start_address + MXT_T100_CFG1, | |
1818 | 1, &cfg); | |
1819 | if (error) | |
1820 | return error; | |
1821 | ||
1c0276d5 | 1822 | data->xy_switch = cfg & MXT_T100_CFG_SWITCHXY; |
de601f71 ND |
1823 | data->invertx = cfg & MXT_T100_CFG_INVERTX; |
1824 | data->inverty = cfg & MXT_T100_CFG_INVERTY; | |
1c0276d5 ND |
1825 | |
1826 | /* allocate aux bytes */ | |
b23157dc ND |
1827 | error = __mxt_read_reg(client, |
1828 | object->start_address + MXT_T100_TCHAUX, | |
1829 | 1, &tchaux); | |
1830 | if (error) | |
1831 | return error; | |
1832 | ||
b23157dc ND |
1833 | aux = 6; |
1834 | ||
1835 | if (tchaux & MXT_T100_TCHAUX_VECT) | |
1836 | data->t100_aux_vect = aux++; | |
1837 | ||
1838 | if (tchaux & MXT_T100_TCHAUX_AMPL) | |
1839 | data->t100_aux_ampl = aux++; | |
1840 | ||
1841 | if (tchaux & MXT_T100_TCHAUX_AREA) | |
1842 | data->t100_aux_area = aux++; | |
1843 | ||
1844 | dev_dbg(&client->dev, | |
1845 | "T100 aux mappings vect:%u ampl:%u area:%u\n", | |
1846 | data->t100_aux_vect, data->t100_aux_ampl, data->t100_aux_area); | |
1847 | ||
b23157dc ND |
1848 | return 0; |
1849 | } | |
1850 | ||
7a53d609 ND |
1851 | static int mxt_input_open(struct input_dev *dev); |
1852 | static void mxt_input_close(struct input_dev *dev); | |
1853 | ||
b6d2d328 SS |
1854 | static void mxt_set_up_as_touchpad(struct input_dev *input_dev, |
1855 | struct mxt_data *data) | |
1856 | { | |
1857 | const struct mxt_platform_data *pdata = data->pdata; | |
1858 | int i; | |
1859 | ||
1860 | input_dev->name = "Atmel maXTouch Touchpad"; | |
1861 | ||
1862 | __set_bit(INPUT_PROP_BUTTONPAD, input_dev->propbit); | |
1863 | ||
1864 | input_abs_set_res(input_dev, ABS_X, MXT_PIXELS_PER_MM); | |
1865 | input_abs_set_res(input_dev, ABS_Y, MXT_PIXELS_PER_MM); | |
1866 | input_abs_set_res(input_dev, ABS_MT_POSITION_X, | |
1867 | MXT_PIXELS_PER_MM); | |
1868 | input_abs_set_res(input_dev, ABS_MT_POSITION_Y, | |
1869 | MXT_PIXELS_PER_MM); | |
1870 | ||
1871 | for (i = 0; i < pdata->t19_num_keys; i++) | |
1872 | if (pdata->t19_keymap[i] != KEY_RESERVED) | |
1873 | input_set_capability(input_dev, EV_KEY, | |
1874 | pdata->t19_keymap[i]); | |
1875 | } | |
1876 | ||
b23157dc | 1877 | static int mxt_initialize_input_device(struct mxt_data *data) |
7a53d609 | 1878 | { |
7a53d609 | 1879 | const struct mxt_platform_data *pdata = data->pdata; |
b6d2d328 | 1880 | struct device *dev = &data->client->dev; |
7a53d609 ND |
1881 | struct input_dev *input_dev; |
1882 | int error; | |
1883 | unsigned int num_mt_slots; | |
1884 | unsigned int mt_flags = 0; | |
7a53d609 | 1885 | |
b23157dc ND |
1886 | switch (data->multitouch) { |
1887 | case MXT_TOUCH_MULTI_T9: | |
1888 | num_mt_slots = data->T9_reportid_max - data->T9_reportid_min + 1; | |
1889 | error = mxt_read_t9_resolution(data); | |
1890 | if (error) | |
1891 | dev_warn(dev, "Failed to initialize T9 resolution\n"); | |
1892 | break; | |
1893 | ||
1894 | case MXT_TOUCH_MULTITOUCHSCREEN_T100: | |
1895 | num_mt_slots = data->num_touchids; | |
1896 | error = mxt_read_t100_config(data); | |
1897 | if (error) | |
1898 | dev_warn(dev, "Failed to read T100 config\n"); | |
1899 | break; | |
1900 | ||
1901 | default: | |
1902 | dev_err(dev, "Invalid multitouch object\n"); | |
1903 | return -EINVAL; | |
1904 | } | |
7a53d609 | 1905 | |
1c0276d5 ND |
1906 | /* Handle default values and orientation switch */ |
1907 | if (data->max_x == 0) | |
1908 | data->max_x = 1023; | |
1909 | ||
1910 | if (data->max_y == 0) | |
1911 | data->max_y = 1023; | |
1912 | ||
1913 | if (data->xy_switch) | |
1914 | swap(data->max_x, data->max_y); | |
1915 | ||
1916 | dev_info(dev, "Touchscreen size X%uY%u\n", data->max_x, data->max_y); | |
1917 | ||
1918 | /* Register input device */ | |
7a53d609 ND |
1919 | input_dev = input_allocate_device(); |
1920 | if (!input_dev) { | |
1921 | dev_err(dev, "Failed to allocate memory\n"); | |
1922 | return -ENOMEM; | |
1923 | } | |
1924 | ||
1925 | input_dev->name = "Atmel maXTouch Touchscreen"; | |
1926 | input_dev->phys = data->phys; | |
1927 | input_dev->id.bustype = BUS_I2C; | |
1928 | input_dev->dev.parent = dev; | |
1929 | input_dev->open = mxt_input_open; | |
1930 | input_dev->close = mxt_input_close; | |
1931 | ||
b23157dc | 1932 | input_set_capability(input_dev, EV_KEY, BTN_TOUCH); |
7a53d609 | 1933 | |
7a53d609 | 1934 | /* For single touch */ |
b23157dc ND |
1935 | input_set_abs_params(input_dev, ABS_X, 0, data->max_x, 0, 0); |
1936 | input_set_abs_params(input_dev, ABS_Y, 0, data->max_y, 0, 0); | |
1937 | ||
1938 | if (data->multitouch == MXT_TOUCH_MULTI_T9 || | |
1939 | (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 && | |
1940 | data->t100_aux_ampl)) { | |
1941 | input_set_abs_params(input_dev, ABS_PRESSURE, 0, 255, 0, 0); | |
1942 | } | |
7a53d609 | 1943 | |
b6d2d328 SS |
1944 | /* If device has buttons we assume it is a touchpad */ |
1945 | if (pdata->t19_num_keys) { | |
1946 | mxt_set_up_as_touchpad(input_dev, data); | |
1947 | mt_flags |= INPUT_MT_POINTER; | |
eafc0c87 ND |
1948 | } else { |
1949 | mt_flags |= INPUT_MT_DIRECT; | |
b6d2d328 SS |
1950 | } |
1951 | ||
7a53d609 | 1952 | /* For multi touch */ |
7a53d609 ND |
1953 | error = input_mt_init_slots(input_dev, num_mt_slots, mt_flags); |
1954 | if (error) { | |
1955 | dev_err(dev, "Error %d initialising slots\n", error); | |
1956 | goto err_free_mem; | |
1957 | } | |
1958 | ||
b23157dc ND |
1959 | if (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100) { |
1960 | input_set_abs_params(input_dev, ABS_MT_TOOL_TYPE, | |
1961 | 0, MT_TOOL_MAX, 0, 0); | |
1962 | input_set_abs_params(input_dev, ABS_MT_DISTANCE, | |
1963 | MXT_DISTANCE_ACTIVE_TOUCH, | |
1964 | MXT_DISTANCE_HOVERING, | |
1965 | 0, 0); | |
1966 | } | |
1967 | ||
7a53d609 ND |
1968 | input_set_abs_params(input_dev, ABS_MT_POSITION_X, |
1969 | 0, data->max_x, 0, 0); | |
1970 | input_set_abs_params(input_dev, ABS_MT_POSITION_Y, | |
1971 | 0, data->max_y, 0, 0); | |
b23157dc ND |
1972 | |
1973 | if (data->multitouch == MXT_TOUCH_MULTI_T9 || | |
1974 | (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 && | |
1975 | data->t100_aux_area)) { | |
1976 | input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR, | |
1977 | 0, MXT_MAX_AREA, 0, 0); | |
1978 | } | |
1979 | ||
1980 | if (data->multitouch == MXT_TOUCH_MULTI_T9 || | |
1981 | (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 && | |
1982 | data->t100_aux_ampl)) { | |
1983 | input_set_abs_params(input_dev, ABS_MT_PRESSURE, | |
1984 | 0, 255, 0, 0); | |
1985 | } | |
1986 | ||
1987 | if (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 && | |
1988 | data->t100_aux_vect) { | |
1989 | input_set_abs_params(input_dev, ABS_MT_ORIENTATION, | |
1990 | 0, 255, 0, 0); | |
1991 | } | |
1992 | ||
1993 | if (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 && | |
1994 | data->t100_aux_ampl) { | |
1995 | input_set_abs_params(input_dev, ABS_MT_PRESSURE, | |
1996 | 0, 255, 0, 0); | |
1997 | } | |
1998 | ||
1999 | if (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 && | |
2000 | data->t100_aux_vect) { | |
2001 | input_set_abs_params(input_dev, ABS_MT_ORIENTATION, | |
2002 | 0, 255, 0, 0); | |
2003 | } | |
7a53d609 ND |
2004 | |
2005 | input_set_drvdata(input_dev, data); | |
2006 | ||
2007 | error = input_register_device(input_dev); | |
2008 | if (error) { | |
2009 | dev_err(dev, "Error %d registering input device\n", error); | |
2010 | goto err_free_mem; | |
2011 | } | |
2012 | ||
2013 | data->input_dev = input_dev; | |
2014 | ||
2015 | return 0; | |
2016 | ||
2017 | err_free_mem: | |
2018 | input_free_device(input_dev); | |
2019 | return error; | |
2020 | } | |
2021 | ||
50a77c65 ND |
2022 | static int mxt_configure_objects(struct mxt_data *data, |
2023 | const struct firmware *cfg); | |
2024 | ||
2025 | static void mxt_config_cb(const struct firmware *cfg, void *ctx) | |
2026 | { | |
2027 | mxt_configure_objects(ctx, cfg); | |
efdbd7ae | 2028 | release_firmware(cfg); |
50a77c65 ND |
2029 | } |
2030 | ||
7686b108 | 2031 | static int mxt_initialize(struct mxt_data *data) |
4cf51c38 JS |
2032 | { |
2033 | struct i2c_client *client = data->client; | |
6cd1ab0f | 2034 | int recovery_attempts = 0; |
4cf51c38 | 2035 | int error; |
4cf51c38 | 2036 | |
6cd1ab0f DT |
2037 | while (1) { |
2038 | error = mxt_get_info(data); | |
2039 | if (!error) | |
2040 | break; | |
2041 | ||
2042 | /* Check bootloader state */ | |
2043 | error = mxt_probe_bootloader(data, false); | |
8efaa5e5 | 2044 | if (error) { |
6cd1ab0f DT |
2045 | dev_info(&client->dev, "Trying alternate bootloader address\n"); |
2046 | error = mxt_probe_bootloader(data, true); | |
2047 | if (error) { | |
8efaa5e5 ND |
2048 | /* Chip is not in appmode or bootloader mode */ |
2049 | return error; | |
2050 | } | |
6cd1ab0f | 2051 | } |
a9fdd1e6 | 2052 | |
6cd1ab0f DT |
2053 | /* OK, we are in bootloader, see if we can recover */ |
2054 | if (++recovery_attempts > 1) { | |
2055 | dev_err(&client->dev, "Could not recover from bootloader mode\n"); | |
2056 | /* | |
2057 | * We can reflash from this state, so do not | |
2058 | * abort initialization. | |
2059 | */ | |
2060 | data->in_bootloader = true; | |
2061 | return 0; | |
8efaa5e5 | 2062 | } |
6cd1ab0f DT |
2063 | |
2064 | /* Attempt to exit bootloader into app mode */ | |
2065 | mxt_send_bootloader_cmd(data, false); | |
2066 | msleep(MXT_FW_RESET_TIME); | |
a9fdd1e6 | 2067 | } |
4cf51c38 | 2068 | |
4cf51c38 | 2069 | /* Get object table information */ |
7686b108 | 2070 | error = mxt_get_object_table(data); |
7bed6805 ND |
2071 | if (error) { |
2072 | dev_err(&client->dev, "Error %d reading object table\n", error); | |
dd24dcf5 | 2073 | return error; |
7bed6805 | 2074 | } |
4cf51c38 | 2075 | |
041fa159 | 2076 | error = mxt_acquire_irq(data); |
dd24dcf5 ND |
2077 | if (error) |
2078 | goto err_free_object_table; | |
2079 | ||
6cd1ab0f DT |
2080 | error = request_firmware_nowait(THIS_MODULE, true, MXT_CFG_NAME, |
2081 | &client->dev, GFP_KERNEL, data, | |
2082 | mxt_config_cb); | |
2083 | if (error) { | |
2084 | dev_err(&client->dev, "Failed to invoke firmware loader: %d\n", | |
2085 | error); | |
2086 | goto err_free_object_table; | |
2087 | } | |
50a77c65 ND |
2088 | |
2089 | return 0; | |
2090 | ||
2091 | err_free_object_table: | |
2092 | mxt_free_object_table(data); | |
2093 | return error; | |
2094 | } | |
2095 | ||
7f3884f7 ND |
2096 | static int mxt_set_t7_power_cfg(struct mxt_data *data, u8 sleep) |
2097 | { | |
2098 | struct device *dev = &data->client->dev; | |
2099 | int error; | |
2100 | struct t7_config *new_config; | |
2101 | struct t7_config deepsleep = { .active = 0, .idle = 0 }; | |
2102 | ||
2103 | if (sleep == MXT_POWER_CFG_DEEPSLEEP) | |
2104 | new_config = &deepsleep; | |
2105 | else | |
2106 | new_config = &data->t7_cfg; | |
2107 | ||
2108 | error = __mxt_write_reg(data->client, data->T7_address, | |
2109 | sizeof(data->t7_cfg), new_config); | |
2110 | if (error) | |
2111 | return error; | |
2112 | ||
2113 | dev_dbg(dev, "Set T7 ACTV:%d IDLE:%d\n", | |
2114 | new_config->active, new_config->idle); | |
2115 | ||
2116 | return 0; | |
2117 | } | |
2118 | ||
2119 | static int mxt_init_t7_power_cfg(struct mxt_data *data) | |
2120 | { | |
2121 | struct device *dev = &data->client->dev; | |
2122 | int error; | |
2123 | bool retry = false; | |
2124 | ||
2125 | recheck: | |
2126 | error = __mxt_read_reg(data->client, data->T7_address, | |
2127 | sizeof(data->t7_cfg), &data->t7_cfg); | |
2128 | if (error) | |
2129 | return error; | |
2130 | ||
2131 | if (data->t7_cfg.active == 0 || data->t7_cfg.idle == 0) { | |
2132 | if (!retry) { | |
2133 | dev_dbg(dev, "T7 cfg zero, resetting\n"); | |
2134 | mxt_soft_reset(data); | |
2135 | retry = true; | |
2136 | goto recheck; | |
2137 | } else { | |
2138 | dev_dbg(dev, "T7 cfg zero after reset, overriding\n"); | |
2139 | data->t7_cfg.active = 20; | |
2140 | data->t7_cfg.idle = 100; | |
2141 | return mxt_set_t7_power_cfg(data, MXT_POWER_CFG_RUN); | |
2142 | } | |
2143 | } | |
2144 | ||
2145 | dev_dbg(dev, "Initialized power cfg: ACTV %d, IDLE %d\n", | |
2146 | data->t7_cfg.active, data->t7_cfg.idle); | |
2147 | return 0; | |
2148 | } | |
2149 | ||
d6a39404 ND |
2150 | #ifdef CONFIG_TOUCHSCREEN_ATMEL_MXT_T37 |
2151 | static u16 mxt_get_debug_value(struct mxt_data *data, unsigned int x, | |
2152 | unsigned int y) | |
2153 | { | |
566d533a | 2154 | struct mxt_info *info = &data->info; |
d6a39404 ND |
2155 | struct mxt_dbg *dbg = &data->dbg; |
2156 | unsigned int ofs, page; | |
566d533a ND |
2157 | unsigned int col = 0; |
2158 | unsigned int col_width; | |
2159 | ||
2160 | if (info->family_id == MXT_FAMILY_1386) { | |
2161 | col_width = info->matrix_ysize / MXT1386_COLUMNS; | |
2162 | col = y / col_width; | |
2163 | y = y % col_width; | |
2164 | } else { | |
2165 | col_width = info->matrix_ysize; | |
2166 | } | |
d6a39404 | 2167 | |
566d533a | 2168 | ofs = (y + (x * col_width)) * sizeof(u16); |
d6a39404 ND |
2169 | page = ofs / MXT_DIAGNOSTIC_SIZE; |
2170 | ofs %= MXT_DIAGNOSTIC_SIZE; | |
2171 | ||
566d533a ND |
2172 | if (info->family_id == MXT_FAMILY_1386) |
2173 | page += col * MXT1386_PAGES_PER_COLUMN; | |
2174 | ||
d6a39404 ND |
2175 | return get_unaligned_le16(&dbg->t37_buf[page].data[ofs]); |
2176 | } | |
2177 | ||
2178 | static int mxt_convert_debug_pages(struct mxt_data *data, u16 *outbuf) | |
2179 | { | |
2180 | struct mxt_dbg *dbg = &data->dbg; | |
2181 | unsigned int x = 0; | |
2182 | unsigned int y = 0; | |
de601f71 | 2183 | unsigned int i, rx, ry; |
d6a39404 ND |
2184 | |
2185 | for (i = 0; i < dbg->t37_nodes; i++) { | |
de601f71 ND |
2186 | /* Handle orientation */ |
2187 | rx = data->xy_switch ? y : x; | |
2188 | ry = data->xy_switch ? x : y; | |
2189 | rx = data->invertx ? (data->xsize - 1 - rx) : rx; | |
2190 | ry = data->inverty ? (data->ysize - 1 - ry) : ry; | |
2191 | ||
2192 | outbuf[i] = mxt_get_debug_value(data, rx, ry); | |
d6a39404 ND |
2193 | |
2194 | /* Next value */ | |
de601f71 | 2195 | if (++x >= (data->xy_switch ? data->ysize : data->xsize)) { |
d6a39404 ND |
2196 | x = 0; |
2197 | y++; | |
2198 | } | |
2199 | } | |
2200 | ||
2201 | return 0; | |
2202 | } | |
2203 | ||
2204 | static int mxt_read_diagnostic_debug(struct mxt_data *data, u8 mode, | |
2205 | u16 *outbuf) | |
2206 | { | |
2207 | struct mxt_dbg *dbg = &data->dbg; | |
2208 | int retries = 0; | |
2209 | int page; | |
2210 | int ret; | |
2211 | u8 cmd = mode; | |
2212 | struct t37_debug *p; | |
2213 | u8 cmd_poll; | |
2214 | ||
2215 | for (page = 0; page < dbg->t37_pages; page++) { | |
2216 | p = dbg->t37_buf + page; | |
2217 | ||
2218 | ret = mxt_write_reg(data->client, dbg->diag_cmd_address, | |
2219 | cmd); | |
2220 | if (ret) | |
2221 | return ret; | |
2222 | ||
2223 | retries = 0; | |
2224 | msleep(20); | |
2225 | wait_cmd: | |
2226 | /* Read back command byte */ | |
2227 | ret = __mxt_read_reg(data->client, dbg->diag_cmd_address, | |
2228 | sizeof(cmd_poll), &cmd_poll); | |
2229 | if (ret) | |
2230 | return ret; | |
2231 | ||
2232 | /* Field is cleared once the command has been processed */ | |
2233 | if (cmd_poll) { | |
2234 | if (retries++ > 100) | |
2235 | return -EINVAL; | |
2236 | ||
2237 | msleep(20); | |
2238 | goto wait_cmd; | |
2239 | } | |
2240 | ||
2241 | /* Read T37 page */ | |
2242 | ret = __mxt_read_reg(data->client, dbg->t37_address, | |
2243 | sizeof(struct t37_debug), p); | |
2244 | if (ret) | |
2245 | return ret; | |
2246 | ||
2247 | if (p->mode != mode || p->page != page) { | |
2248 | dev_err(&data->client->dev, "T37 page mismatch\n"); | |
2249 | return -EINVAL; | |
2250 | } | |
2251 | ||
2252 | dev_dbg(&data->client->dev, "%s page:%d retries:%d\n", | |
2253 | __func__, page, retries); | |
2254 | ||
2255 | /* For remaining pages, write PAGEUP rather than mode */ | |
2256 | cmd = MXT_DIAGNOSTIC_PAGEUP; | |
2257 | } | |
2258 | ||
2259 | return mxt_convert_debug_pages(data, outbuf); | |
2260 | } | |
2261 | ||
ecfdd7e2 ND |
2262 | static int mxt_queue_setup(struct vb2_queue *q, |
2263 | unsigned int *nbuffers, unsigned int *nplanes, | |
2264 | unsigned int sizes[], struct device *alloc_devs[]) | |
2265 | { | |
2266 | struct mxt_data *data = q->drv_priv; | |
2267 | size_t size = data->dbg.t37_nodes * sizeof(u16); | |
2268 | ||
2269 | if (*nplanes) | |
2270 | return sizes[0] < size ? -EINVAL : 0; | |
2271 | ||
2272 | *nplanes = 1; | |
2273 | sizes[0] = size; | |
2274 | ||
2275 | return 0; | |
2276 | } | |
2277 | ||
2278 | static void mxt_buffer_queue(struct vb2_buffer *vb) | |
2279 | { | |
2280 | struct mxt_data *data = vb2_get_drv_priv(vb->vb2_queue); | |
2281 | u16 *ptr; | |
2282 | int ret; | |
06b3d3f3 | 2283 | u8 mode; |
ecfdd7e2 ND |
2284 | |
2285 | ptr = vb2_plane_vaddr(vb, 0); | |
2286 | if (!ptr) { | |
2287 | dev_err(&data->client->dev, "Error acquiring frame ptr\n"); | |
2288 | goto fault; | |
2289 | } | |
2290 | ||
06b3d3f3 ND |
2291 | switch (data->dbg.input) { |
2292 | case MXT_V4L_INPUT_DELTAS: | |
2293 | default: | |
2294 | mode = MXT_DIAGNOSTIC_DELTAS; | |
2295 | break; | |
2296 | ||
2297 | case MXT_V4L_INPUT_REFS: | |
2298 | mode = MXT_DIAGNOSTIC_REFS; | |
2299 | break; | |
2300 | } | |
2301 | ||
2302 | ret = mxt_read_diagnostic_debug(data, mode, ptr); | |
ecfdd7e2 ND |
2303 | if (ret) |
2304 | goto fault; | |
2305 | ||
2306 | vb2_set_plane_payload(vb, 0, data->dbg.t37_nodes * sizeof(u16)); | |
2307 | vb2_buffer_done(vb, VB2_BUF_STATE_DONE); | |
2308 | return; | |
2309 | ||
2310 | fault: | |
2311 | vb2_buffer_done(vb, VB2_BUF_STATE_ERROR); | |
2312 | } | |
2313 | ||
2314 | /* V4L2 structures */ | |
2315 | static const struct vb2_ops mxt_queue_ops = { | |
2316 | .queue_setup = mxt_queue_setup, | |
2317 | .buf_queue = mxt_buffer_queue, | |
2318 | .wait_prepare = vb2_ops_wait_prepare, | |
2319 | .wait_finish = vb2_ops_wait_finish, | |
2320 | }; | |
2321 | ||
2322 | static const struct vb2_queue mxt_queue = { | |
2323 | .type = V4L2_BUF_TYPE_VIDEO_CAPTURE, | |
2324 | .io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF | VB2_READ, | |
2325 | .buf_struct_size = sizeof(struct mxt_vb2_buffer), | |
2326 | .ops = &mxt_queue_ops, | |
2327 | .mem_ops = &vb2_vmalloc_memops, | |
2328 | .timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC, | |
2329 | .min_buffers_needed = 1, | |
2330 | }; | |
2331 | ||
2332 | static int mxt_vidioc_querycap(struct file *file, void *priv, | |
2333 | struct v4l2_capability *cap) | |
2334 | { | |
2335 | struct mxt_data *data = video_drvdata(file); | |
2336 | ||
2337 | strlcpy(cap->driver, "atmel_mxt_ts", sizeof(cap->driver)); | |
2338 | strlcpy(cap->card, "atmel_mxt_ts touch", sizeof(cap->card)); | |
2339 | snprintf(cap->bus_info, sizeof(cap->bus_info), | |
2340 | "I2C:%s", dev_name(&data->client->dev)); | |
2341 | return 0; | |
2342 | } | |
2343 | ||
2344 | static int mxt_vidioc_enum_input(struct file *file, void *priv, | |
2345 | struct v4l2_input *i) | |
2346 | { | |
06b3d3f3 | 2347 | if (i->index >= MXT_V4L_INPUT_MAX) |
ecfdd7e2 ND |
2348 | return -EINVAL; |
2349 | ||
2350 | i->type = V4L2_INPUT_TYPE_TOUCH; | |
06b3d3f3 ND |
2351 | |
2352 | switch (i->index) { | |
2353 | case MXT_V4L_INPUT_REFS: | |
2354 | strlcpy(i->name, "Mutual Capacitance References", | |
2355 | sizeof(i->name)); | |
2356 | break; | |
2357 | case MXT_V4L_INPUT_DELTAS: | |
2358 | strlcpy(i->name, "Mutual Capacitance Deltas", sizeof(i->name)); | |
2359 | break; | |
2360 | } | |
2361 | ||
ecfdd7e2 ND |
2362 | return 0; |
2363 | } | |
2364 | ||
2365 | static int mxt_set_input(struct mxt_data *data, unsigned int i) | |
2366 | { | |
2367 | struct v4l2_pix_format *f = &data->dbg.format; | |
2368 | ||
06b3d3f3 | 2369 | if (i >= MXT_V4L_INPUT_MAX) |
ecfdd7e2 ND |
2370 | return -EINVAL; |
2371 | ||
06b3d3f3 ND |
2372 | if (i == MXT_V4L_INPUT_DELTAS) |
2373 | f->pixelformat = V4L2_TCH_FMT_DELTA_TD16; | |
2374 | else | |
2375 | f->pixelformat = V4L2_TCH_FMT_TU16; | |
2376 | ||
de601f71 ND |
2377 | f->width = data->xy_switch ? data->ysize : data->xsize; |
2378 | f->height = data->xy_switch ? data->xsize : data->ysize; | |
ecfdd7e2 ND |
2379 | f->field = V4L2_FIELD_NONE; |
2380 | f->colorspace = V4L2_COLORSPACE_RAW; | |
2381 | f->bytesperline = f->width * sizeof(u16); | |
2382 | f->sizeimage = f->width * f->height * sizeof(u16); | |
2383 | ||
2384 | data->dbg.input = i; | |
2385 | ||
2386 | return 0; | |
2387 | } | |
2388 | ||
2389 | static int mxt_vidioc_s_input(struct file *file, void *priv, unsigned int i) | |
2390 | { | |
2391 | return mxt_set_input(video_drvdata(file), i); | |
2392 | } | |
2393 | ||
2394 | static int mxt_vidioc_g_input(struct file *file, void *priv, unsigned int *i) | |
2395 | { | |
2396 | struct mxt_data *data = video_drvdata(file); | |
2397 | ||
2398 | *i = data->dbg.input; | |
2399 | ||
2400 | return 0; | |
2401 | } | |
2402 | ||
2403 | static int mxt_vidioc_fmt(struct file *file, void *priv, struct v4l2_format *f) | |
2404 | { | |
2405 | struct mxt_data *data = video_drvdata(file); | |
2406 | ||
2407 | f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
2408 | f->fmt.pix = data->dbg.format; | |
2409 | ||
2410 | return 0; | |
2411 | } | |
2412 | ||
2413 | static int mxt_vidioc_enum_fmt(struct file *file, void *priv, | |
2414 | struct v4l2_fmtdesc *fmt) | |
2415 | { | |
2416 | if (fmt->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
2417 | return -EINVAL; | |
2418 | ||
06b3d3f3 ND |
2419 | switch (fmt->index) { |
2420 | case 0: | |
2421 | fmt->pixelformat = V4L2_TCH_FMT_TU16; | |
2422 | break; | |
2423 | ||
2424 | case 1: | |
2425 | fmt->pixelformat = V4L2_TCH_FMT_DELTA_TD16; | |
2426 | break; | |
2427 | ||
2428 | default: | |
2429 | return -EINVAL; | |
2430 | } | |
2431 | ||
ecfdd7e2 ND |
2432 | return 0; |
2433 | } | |
2434 | ||
2435 | static int mxt_vidioc_g_parm(struct file *file, void *fh, | |
2436 | struct v4l2_streamparm *a) | |
2437 | { | |
2438 | if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
2439 | return -EINVAL; | |
2440 | ||
2441 | a->parm.capture.readbuffers = 1; | |
2442 | a->parm.capture.timeperframe.numerator = 1; | |
2443 | a->parm.capture.timeperframe.denominator = 10; | |
2444 | return 0; | |
2445 | } | |
2446 | ||
2447 | static const struct v4l2_ioctl_ops mxt_video_ioctl_ops = { | |
2448 | .vidioc_querycap = mxt_vidioc_querycap, | |
2449 | ||
2450 | .vidioc_enum_fmt_vid_cap = mxt_vidioc_enum_fmt, | |
2451 | .vidioc_s_fmt_vid_cap = mxt_vidioc_fmt, | |
2452 | .vidioc_g_fmt_vid_cap = mxt_vidioc_fmt, | |
2453 | .vidioc_try_fmt_vid_cap = mxt_vidioc_fmt, | |
2454 | .vidioc_g_parm = mxt_vidioc_g_parm, | |
2455 | ||
2456 | .vidioc_enum_input = mxt_vidioc_enum_input, | |
2457 | .vidioc_g_input = mxt_vidioc_g_input, | |
2458 | .vidioc_s_input = mxt_vidioc_s_input, | |
2459 | ||
2460 | .vidioc_reqbufs = vb2_ioctl_reqbufs, | |
2461 | .vidioc_create_bufs = vb2_ioctl_create_bufs, | |
2462 | .vidioc_querybuf = vb2_ioctl_querybuf, | |
2463 | .vidioc_qbuf = vb2_ioctl_qbuf, | |
2464 | .vidioc_dqbuf = vb2_ioctl_dqbuf, | |
2465 | .vidioc_expbuf = vb2_ioctl_expbuf, | |
2466 | ||
2467 | .vidioc_streamon = vb2_ioctl_streamon, | |
2468 | .vidioc_streamoff = vb2_ioctl_streamoff, | |
2469 | }; | |
2470 | ||
2471 | static const struct video_device mxt_video_device = { | |
2472 | .name = "Atmel maxTouch", | |
2473 | .fops = &mxt_video_fops, | |
2474 | .ioctl_ops = &mxt_video_ioctl_ops, | |
2475 | .release = video_device_release_empty, | |
2476 | .device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_TOUCH | | |
2477 | V4L2_CAP_READWRITE | V4L2_CAP_STREAMING, | |
2478 | }; | |
2479 | ||
d6a39404 ND |
2480 | static void mxt_debug_init(struct mxt_data *data) |
2481 | { | |
566d533a | 2482 | struct mxt_info *info = &data->info; |
d6a39404 ND |
2483 | struct mxt_dbg *dbg = &data->dbg; |
2484 | struct mxt_object *object; | |
ecfdd7e2 | 2485 | int error; |
d6a39404 ND |
2486 | |
2487 | object = mxt_get_object(data, MXT_GEN_COMMAND_T6); | |
2488 | if (!object) | |
2489 | goto error; | |
2490 | ||
2491 | dbg->diag_cmd_address = object->start_address + MXT_COMMAND_DIAGNOSTIC; | |
2492 | ||
2493 | object = mxt_get_object(data, MXT_DEBUG_DIAGNOSTIC_T37); | |
2494 | if (!object) | |
2495 | goto error; | |
2496 | ||
2497 | if (mxt_obj_size(object) != sizeof(struct t37_debug)) { | |
2498 | dev_warn(&data->client->dev, "Bad T37 size"); | |
2499 | goto error; | |
2500 | } | |
2501 | ||
2502 | dbg->t37_address = object->start_address; | |
2503 | ||
2504 | /* Calculate size of data and allocate buffer */ | |
2786489f | 2505 | dbg->t37_nodes = data->xsize * data->ysize; |
566d533a ND |
2506 | |
2507 | if (info->family_id == MXT_FAMILY_1386) | |
2508 | dbg->t37_pages = MXT1386_COLUMNS * MXT1386_PAGES_PER_COLUMN; | |
2509 | else | |
2510 | dbg->t37_pages = DIV_ROUND_UP(data->xsize * | |
2511 | data->info.matrix_ysize * | |
2512 | sizeof(u16), | |
2513 | sizeof(dbg->t37_buf->data)); | |
d6a39404 ND |
2514 | |
2515 | dbg->t37_buf = devm_kmalloc_array(&data->client->dev, dbg->t37_pages, | |
2516 | sizeof(struct t37_debug), GFP_KERNEL); | |
2517 | if (!dbg->t37_buf) | |
2518 | goto error; | |
2519 | ||
ecfdd7e2 ND |
2520 | /* init channel to zero */ |
2521 | mxt_set_input(data, 0); | |
2522 | ||
2523 | /* register video device */ | |
2524 | snprintf(dbg->v4l2.name, sizeof(dbg->v4l2.name), "%s", "atmel_mxt_ts"); | |
2525 | error = v4l2_device_register(&data->client->dev, &dbg->v4l2); | |
2526 | if (error) | |
2527 | goto error; | |
2528 | ||
2529 | /* initialize the queue */ | |
2530 | mutex_init(&dbg->lock); | |
2531 | dbg->queue = mxt_queue; | |
2532 | dbg->queue.drv_priv = data; | |
2533 | dbg->queue.lock = &dbg->lock; | |
2534 | dbg->queue.dev = &data->client->dev; | |
2535 | ||
2536 | error = vb2_queue_init(&dbg->queue); | |
2537 | if (error) | |
2538 | goto error_unreg_v4l2; | |
2539 | ||
2540 | dbg->vdev = mxt_video_device; | |
2541 | dbg->vdev.v4l2_dev = &dbg->v4l2; | |
2542 | dbg->vdev.lock = &dbg->lock; | |
2543 | dbg->vdev.vfl_dir = VFL_DIR_RX; | |
2544 | dbg->vdev.queue = &dbg->queue; | |
2545 | video_set_drvdata(&dbg->vdev, data); | |
2546 | ||
2547 | error = video_register_device(&dbg->vdev, VFL_TYPE_TOUCH, -1); | |
2548 | if (error) | |
2549 | goto error_unreg_v4l2; | |
2550 | ||
d6a39404 ND |
2551 | return; |
2552 | ||
ecfdd7e2 ND |
2553 | error_unreg_v4l2: |
2554 | v4l2_device_unregister(&dbg->v4l2); | |
d6a39404 ND |
2555 | error: |
2556 | dev_warn(&data->client->dev, "Error initializing T37\n"); | |
2557 | } | |
2558 | #else | |
2559 | static void mxt_debug_init(struct mxt_data *data) | |
2560 | { | |
2561 | } | |
2562 | #endif | |
2563 | ||
50a77c65 ND |
2564 | static int mxt_configure_objects(struct mxt_data *data, |
2565 | const struct firmware *cfg) | |
2566 | { | |
2567 | struct device *dev = &data->client->dev; | |
2568 | struct mxt_info *info = &data->info; | |
2569 | int error; | |
2570 | ||
7f3884f7 ND |
2571 | error = mxt_init_t7_power_cfg(data); |
2572 | if (error) { | |
2573 | dev_err(dev, "Failed to initialize power cfg\n"); | |
2574 | return error; | |
2575 | } | |
2576 | ||
50a77c65 ND |
2577 | if (cfg) { |
2578 | error = mxt_update_cfg(data, cfg); | |
2579 | if (error) | |
2580 | dev_warn(dev, "Error %d updating config\n", error); | |
7bed6805 | 2581 | } |
4cf51c38 | 2582 | |
b23157dc ND |
2583 | if (data->multitouch) { |
2584 | error = mxt_initialize_input_device(data); | |
2585 | if (error) | |
2586 | return error; | |
2587 | } else { | |
2588 | dev_warn(dev, "No touch object detected\n"); | |
2589 | } | |
4cf51c38 | 2590 | |
d6a39404 ND |
2591 | mxt_debug_init(data); |
2592 | ||
50a77c65 | 2593 | dev_info(dev, |
61dc1aba ND |
2594 | "Family: %u Variant: %u Firmware V%u.%u.%02X Objects: %u\n", |
2595 | info->family_id, info->variant_id, info->version >> 4, | |
2596 | info->version & 0xf, info->build, info->object_num); | |
4cf51c38 JS |
2597 | |
2598 | return 0; | |
2599 | } | |
2600 | ||
b19fc9ec DK |
2601 | /* Firmware Version is returned as Major.Minor.Build */ |
2602 | static ssize_t mxt_fw_version_show(struct device *dev, | |
2603 | struct device_attribute *attr, char *buf) | |
2604 | { | |
2605 | struct mxt_data *data = dev_get_drvdata(dev); | |
2606 | struct mxt_info *info = &data->info; | |
2607 | return scnprintf(buf, PAGE_SIZE, "%u.%u.%02X\n", | |
2608 | info->version >> 4, info->version & 0xf, info->build); | |
2609 | } | |
2610 | ||
2611 | /* Hardware Version is returned as FamilyID.VariantID */ | |
2612 | static ssize_t mxt_hw_version_show(struct device *dev, | |
2613 | struct device_attribute *attr, char *buf) | |
2614 | { | |
2615 | struct mxt_data *data = dev_get_drvdata(dev); | |
2616 | struct mxt_info *info = &data->info; | |
2617 | return scnprintf(buf, PAGE_SIZE, "%u.%u\n", | |
2618 | info->family_id, info->variant_id); | |
2619 | } | |
2620 | ||
794eb67e DK |
2621 | static ssize_t mxt_show_instance(char *buf, int count, |
2622 | struct mxt_object *object, int instance, | |
2623 | const u8 *val) | |
2624 | { | |
2625 | int i; | |
2626 | ||
1e0c0c5b | 2627 | if (mxt_obj_instances(object) > 1) |
794eb67e DK |
2628 | count += scnprintf(buf + count, PAGE_SIZE - count, |
2629 | "Instance %u\n", instance); | |
2630 | ||
1e0c0c5b | 2631 | for (i = 0; i < mxt_obj_size(object); i++) |
794eb67e DK |
2632 | count += scnprintf(buf + count, PAGE_SIZE - count, |
2633 | "\t[%2u]: %02x (%d)\n", i, val[i], val[i]); | |
2634 | count += scnprintf(buf + count, PAGE_SIZE - count, "\n"); | |
2635 | ||
2636 | return count; | |
2637 | } | |
2638 | ||
7686b108 | 2639 | static ssize_t mxt_object_show(struct device *dev, |
4cf51c38 JS |
2640 | struct device_attribute *attr, char *buf) |
2641 | { | |
7686b108 IV |
2642 | struct mxt_data *data = dev_get_drvdata(dev); |
2643 | struct mxt_object *object; | |
4cf51c38 JS |
2644 | int count = 0; |
2645 | int i, j; | |
2646 | int error; | |
43a91d51 | 2647 | u8 *obuf; |
4cf51c38 | 2648 | |
43a91d51 DK |
2649 | /* Pre-allocate buffer large enough to hold max sized object. */ |
2650 | obuf = kmalloc(256, GFP_KERNEL); | |
2651 | if (!obuf) | |
2652 | return -ENOMEM; | |
4cf51c38 | 2653 | |
43a91d51 | 2654 | error = 0; |
4cf51c38 JS |
2655 | for (i = 0; i < data->info.object_num; i++) { |
2656 | object = data->object_table + i; | |
2657 | ||
91630955 | 2658 | if (!mxt_object_readable(object->type)) |
4cf51c38 | 2659 | continue; |
4cf51c38 | 2660 | |
91630955 DK |
2661 | count += scnprintf(buf + count, PAGE_SIZE - count, |
2662 | "T%u:\n", object->type); | |
4cf51c38 | 2663 | |
1e0c0c5b DK |
2664 | for (j = 0; j < mxt_obj_instances(object); j++) { |
2665 | u16 size = mxt_obj_size(object); | |
794eb67e | 2666 | u16 addr = object->start_address + j * size; |
43a91d51 | 2667 | |
794eb67e | 2668 | error = __mxt_read_reg(data->client, addr, size, obuf); |
4cf51c38 | 2669 | if (error) |
794eb67e | 2670 | goto done; |
4cf51c38 | 2671 | |
794eb67e | 2672 | count = mxt_show_instance(buf, count, object, j, obuf); |
4cf51c38 | 2673 | } |
4cf51c38 JS |
2674 | } |
2675 | ||
794eb67e | 2676 | done: |
43a91d51 DK |
2677 | kfree(obuf); |
2678 | return error ?: count; | |
4cf51c38 JS |
2679 | } |
2680 | ||
f2ac6cb9 ND |
2681 | static int mxt_check_firmware_format(struct device *dev, |
2682 | const struct firmware *fw) | |
2683 | { | |
2684 | unsigned int pos = 0; | |
2685 | char c; | |
2686 | ||
2687 | while (pos < fw->size) { | |
2688 | c = *(fw->data + pos); | |
2689 | ||
2690 | if (c < '0' || (c > '9' && c < 'A') || c > 'F') | |
2691 | return 0; | |
2692 | ||
2693 | pos++; | |
2694 | } | |
2695 | ||
2696 | /* | |
2697 | * To convert file try: | |
2698 | * xxd -r -p mXTXXX__APP_VX-X-XX.enc > maxtouch.fw | |
2699 | */ | |
2700 | dev_err(dev, "Aborting: firmware file must be in binary format\n"); | |
2701 | ||
2702 | return -EINVAL; | |
2703 | } | |
2704 | ||
7686b108 | 2705 | static int mxt_load_fw(struct device *dev, const char *fn) |
4cf51c38 | 2706 | { |
7686b108 | 2707 | struct mxt_data *data = dev_get_drvdata(dev); |
4cf51c38 JS |
2708 | const struct firmware *fw = NULL; |
2709 | unsigned int frame_size; | |
2710 | unsigned int pos = 0; | |
f943c74a | 2711 | unsigned int retry = 0; |
f477c758 | 2712 | unsigned int frame = 0; |
4cf51c38 JS |
2713 | int ret; |
2714 | ||
2715 | ret = request_firmware(&fw, fn, dev); | |
2716 | if (ret) { | |
2717 | dev_err(dev, "Unable to open firmware %s\n", fn); | |
2718 | return ret; | |
2719 | } | |
2720 | ||
f2ac6cb9 ND |
2721 | /* Check for incorrect enc file */ |
2722 | ret = mxt_check_firmware_format(dev, fw); | |
2723 | if (ret) | |
2724 | goto release_firmware; | |
2725 | ||
a9fdd1e6 ND |
2726 | if (!data->in_bootloader) { |
2727 | /* Change to the bootloader mode */ | |
2728 | data->in_bootloader = true; | |
d79e7e47 | 2729 | |
a9fdd1e6 ND |
2730 | ret = mxt_t6_command(data, MXT_COMMAND_RESET, |
2731 | MXT_BOOT_VALUE, false); | |
2732 | if (ret) | |
2733 | goto release_firmware; | |
a4a2ef46 | 2734 | |
a9fdd1e6 | 2735 | msleep(MXT_RESET_TIME); |
8efaa5e5 ND |
2736 | |
2737 | /* Do not need to scan since we know family ID */ | |
2738 | ret = mxt_lookup_bootloader_address(data, 0); | |
2739 | if (ret) | |
2740 | goto release_firmware; | |
58e4aeee SW |
2741 | |
2742 | mxt_free_input_device(data); | |
2743 | mxt_free_object_table(data); | |
8efaa5e5 ND |
2744 | } else { |
2745 | enable_irq(data->irq); | |
a9fdd1e6 | 2746 | } |
4cf51c38 | 2747 | |
d79e7e47 BL |
2748 | reinit_completion(&data->bl_completion); |
2749 | ||
385deb96 ND |
2750 | ret = mxt_check_bootloader(data, MXT_WAITING_BOOTLOAD_CMD, false); |
2751 | if (ret) { | |
2752 | /* Bootloader may still be unlocked from previous attempt */ | |
2753 | ret = mxt_check_bootloader(data, MXT_WAITING_FRAME_DATA, false); | |
2754 | if (ret) | |
2755 | goto disable_irq; | |
2756 | } else { | |
2757 | dev_info(dev, "Unlocking bootloader\n"); | |
4cf51c38 | 2758 | |
385deb96 | 2759 | /* Unlock bootloader */ |
8efaa5e5 | 2760 | ret = mxt_send_bootloader_cmd(data, true); |
385deb96 ND |
2761 | if (ret) |
2762 | goto disable_irq; | |
2763 | } | |
4cf51c38 JS |
2764 | |
2765 | while (pos < fw->size) { | |
385deb96 | 2766 | ret = mxt_check_bootloader(data, MXT_WAITING_FRAME_DATA, true); |
4cf51c38 | 2767 | if (ret) |
d79e7e47 | 2768 | goto disable_irq; |
4cf51c38 JS |
2769 | |
2770 | frame_size = ((*(fw->data + pos) << 8) | *(fw->data + pos + 1)); | |
2771 | ||
f943c74a | 2772 | /* Take account of CRC bytes */ |
4cf51c38 JS |
2773 | frame_size += 2; |
2774 | ||
2775 | /* Write one frame to device */ | |
f28a842d ND |
2776 | ret = mxt_bootloader_write(data, fw->data + pos, frame_size); |
2777 | if (ret) | |
2778 | goto disable_irq; | |
4cf51c38 | 2779 | |
385deb96 | 2780 | ret = mxt_check_bootloader(data, MXT_FRAME_CRC_PASS, true); |
f943c74a ND |
2781 | if (ret) { |
2782 | retry++; | |
2783 | ||
2784 | /* Back off by 20ms per retry */ | |
2785 | msleep(retry * 20); | |
4cf51c38 | 2786 | |
f943c74a ND |
2787 | if (retry > 20) { |
2788 | dev_err(dev, "Retry count exceeded\n"); | |
2789 | goto disable_irq; | |
2790 | } | |
2791 | } else { | |
2792 | retry = 0; | |
2793 | pos += frame_size; | |
f477c758 | 2794 | frame++; |
f943c74a | 2795 | } |
4cf51c38 | 2796 | |
f477c758 ND |
2797 | if (frame % 50 == 0) |
2798 | dev_dbg(dev, "Sent %d frames, %d/%zd bytes\n", | |
2799 | frame, pos, fw->size); | |
4cf51c38 JS |
2800 | } |
2801 | ||
a0434b75 | 2802 | /* Wait for flash. */ |
a4a2ef46 IV |
2803 | ret = mxt_wait_for_completion(data, &data->bl_completion, |
2804 | MXT_FW_RESET_TIME); | |
a0434b75 BL |
2805 | if (ret) |
2806 | goto disable_irq; | |
2807 | ||
f477c758 ND |
2808 | dev_dbg(dev, "Sent %d frames, %d bytes\n", frame, pos); |
2809 | ||
a0434b75 BL |
2810 | /* |
2811 | * Wait for device to reset. Some bootloader versions do not assert | |
2812 | * the CHG line after bootloading has finished, so ignore potential | |
2813 | * errors. | |
2814 | */ | |
a4a2ef46 | 2815 | mxt_wait_for_completion(data, &data->bl_completion, MXT_FW_RESET_TIME); |
a0434b75 | 2816 | |
d79e7e47 BL |
2817 | data->in_bootloader = false; |
2818 | ||
2819 | disable_irq: | |
2820 | disable_irq(data->irq); | |
a4a2ef46 | 2821 | release_firmware: |
4cf51c38 | 2822 | release_firmware(fw); |
4cf51c38 JS |
2823 | return ret; |
2824 | } | |
2825 | ||
7686b108 | 2826 | static ssize_t mxt_update_fw_store(struct device *dev, |
4cf51c38 JS |
2827 | struct device_attribute *attr, |
2828 | const char *buf, size_t count) | |
2829 | { | |
7686b108 | 2830 | struct mxt_data *data = dev_get_drvdata(dev); |
4cf51c38 JS |
2831 | int error; |
2832 | ||
7686b108 | 2833 | error = mxt_load_fw(dev, MXT_FW_NAME); |
4cf51c38 JS |
2834 | if (error) { |
2835 | dev_err(dev, "The firmware update failed(%d)\n", error); | |
2836 | count = error; | |
2837 | } else { | |
7bed6805 ND |
2838 | dev_info(dev, "The firmware update succeeded\n"); |
2839 | ||
dd24dcf5 | 2840 | error = mxt_initialize(data); |
d79e7e47 BL |
2841 | if (error) |
2842 | return error; | |
2843 | } | |
08960a07 | 2844 | |
4cf51c38 JS |
2845 | return count; |
2846 | } | |
2847 | ||
b19fc9ec DK |
2848 | static DEVICE_ATTR(fw_version, S_IRUGO, mxt_fw_version_show, NULL); |
2849 | static DEVICE_ATTR(hw_version, S_IRUGO, mxt_hw_version_show, NULL); | |
71b3e938 DK |
2850 | static DEVICE_ATTR(object, S_IRUGO, mxt_object_show, NULL); |
2851 | static DEVICE_ATTR(update_fw, S_IWUSR, NULL, mxt_update_fw_store); | |
4cf51c38 | 2852 | |
7686b108 | 2853 | static struct attribute *mxt_attrs[] = { |
b19fc9ec DK |
2854 | &dev_attr_fw_version.attr, |
2855 | &dev_attr_hw_version.attr, | |
4cf51c38 JS |
2856 | &dev_attr_object.attr, |
2857 | &dev_attr_update_fw.attr, | |
2858 | NULL | |
2859 | }; | |
2860 | ||
7686b108 IV |
2861 | static const struct attribute_group mxt_attr_group = { |
2862 | .attrs = mxt_attrs, | |
4cf51c38 JS |
2863 | }; |
2864 | ||
7686b108 | 2865 | static void mxt_start(struct mxt_data *data) |
4cf51c38 | 2866 | { |
7f3884f7 ND |
2867 | switch (data->pdata->suspend_mode) { |
2868 | case MXT_SUSPEND_T9_CTRL: | |
2869 | mxt_soft_reset(data); | |
2870 | ||
2871 | /* Touch enable */ | |
2872 | /* 0x83 = SCANEN | RPTEN | ENABLE */ | |
2873 | mxt_write_object(data, | |
2874 | MXT_TOUCH_MULTI_T9, MXT_T9_CTRL, 0x83); | |
2875 | break; | |
2876 | ||
2877 | case MXT_SUSPEND_DEEP_SLEEP: | |
2878 | default: | |
2879 | mxt_set_t7_power_cfg(data, MXT_POWER_CFG_RUN); | |
2880 | ||
2881 | /* Recalibrate since chip has been in deep sleep */ | |
2882 | mxt_t6_command(data, MXT_COMMAND_CALIBRATE, 1, false); | |
2883 | break; | |
2884 | } | |
2885 | ||
4cf51c38 JS |
2886 | } |
2887 | ||
7686b108 | 2888 | static void mxt_stop(struct mxt_data *data) |
4cf51c38 | 2889 | { |
7f3884f7 ND |
2890 | switch (data->pdata->suspend_mode) { |
2891 | case MXT_SUSPEND_T9_CTRL: | |
2892 | /* Touch disable */ | |
2893 | mxt_write_object(data, | |
2894 | MXT_TOUCH_MULTI_T9, MXT_T9_CTRL, 0); | |
2895 | break; | |
2896 | ||
2897 | case MXT_SUSPEND_DEEP_SLEEP: | |
2898 | default: | |
2899 | mxt_set_t7_power_cfg(data, MXT_POWER_CFG_DEEPSLEEP); | |
2900 | break; | |
2901 | } | |
4cf51c38 JS |
2902 | } |
2903 | ||
7686b108 | 2904 | static int mxt_input_open(struct input_dev *dev) |
4cf51c38 | 2905 | { |
7686b108 | 2906 | struct mxt_data *data = input_get_drvdata(dev); |
4cf51c38 | 2907 | |
7686b108 | 2908 | mxt_start(data); |
4cf51c38 JS |
2909 | |
2910 | return 0; | |
2911 | } | |
2912 | ||
7686b108 | 2913 | static void mxt_input_close(struct input_dev *dev) |
4cf51c38 | 2914 | { |
7686b108 | 2915 | struct mxt_data *data = input_get_drvdata(dev); |
4cf51c38 | 2916 | |
7686b108 | 2917 | mxt_stop(data); |
4cf51c38 JS |
2918 | } |
2919 | ||
78188be3 | 2920 | #ifdef CONFIG_OF |
4f8d8088 | 2921 | static const struct mxt_platform_data *mxt_parse_dt(struct i2c_client *client) |
78188be3 SW |
2922 | { |
2923 | struct mxt_platform_data *pdata; | |
20447664 | 2924 | struct device_node *np = client->dev.of_node; |
78188be3 | 2925 | u32 *keymap; |
20447664 | 2926 | int proplen, ret; |
78188be3 | 2927 | |
20447664 | 2928 | if (!np) |
4f8d8088 | 2929 | return ERR_PTR(-ENOENT); |
78188be3 SW |
2930 | |
2931 | pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL); | |
2932 | if (!pdata) | |
2933 | return ERR_PTR(-ENOMEM); | |
2934 | ||
20447664 | 2935 | if (of_find_property(np, "linux,gpio-keymap", &proplen)) { |
78188be3 SW |
2936 | pdata->t19_num_keys = proplen / sizeof(u32); |
2937 | ||
2938 | keymap = devm_kzalloc(&client->dev, | |
2939 | pdata->t19_num_keys * sizeof(keymap[0]), | |
2940 | GFP_KERNEL); | |
2941 | if (!keymap) | |
2942 | return ERR_PTR(-ENOMEM); | |
2943 | ||
20447664 ND |
2944 | ret = of_property_read_u32_array(np, "linux,gpio-keymap", |
2945 | keymap, pdata->t19_num_keys); | |
2946 | if (ret) | |
2947 | dev_warn(&client->dev, | |
2948 | "Couldn't read linux,gpio-keymap: %d\n", ret); | |
78188be3 SW |
2949 | |
2950 | pdata->t19_keymap = keymap; | |
2951 | } | |
2952 | ||
7f3884f7 ND |
2953 | pdata->suspend_mode = MXT_SUSPEND_DEEP_SLEEP; |
2954 | ||
78188be3 SW |
2955 | return pdata; |
2956 | } | |
2957 | #else | |
4f8d8088 | 2958 | static const struct mxt_platform_data *mxt_parse_dt(struct i2c_client *client) |
78188be3 | 2959 | { |
4f8d8088 DT |
2960 | return ERR_PTR(-ENOENT); |
2961 | } | |
2962 | #endif | |
2963 | ||
2964 | #ifdef CONFIG_ACPI | |
2965 | ||
2966 | struct mxt_acpi_platform_data { | |
2967 | const char *hid; | |
2968 | struct mxt_platform_data pdata; | |
2969 | }; | |
2970 | ||
2971 | static unsigned int samus_touchpad_buttons[] = { | |
2972 | KEY_RESERVED, | |
2973 | KEY_RESERVED, | |
2974 | KEY_RESERVED, | |
2975 | BTN_LEFT | |
2976 | }; | |
2977 | ||
2978 | static struct mxt_acpi_platform_data samus_platform_data[] = { | |
2979 | { | |
2980 | /* Touchpad */ | |
2981 | .hid = "ATML0000", | |
2982 | .pdata = { | |
2983 | .t19_num_keys = ARRAY_SIZE(samus_touchpad_buttons), | |
2984 | .t19_keymap = samus_touchpad_buttons, | |
2985 | }, | |
2986 | }, | |
2987 | { | |
2988 | /* Touchscreen */ | |
2989 | .hid = "ATML0001", | |
2990 | }, | |
2991 | { } | |
2992 | }; | |
2993 | ||
c67566c6 DT |
2994 | static unsigned int chromebook_tp_buttons[] = { |
2995 | KEY_RESERVED, | |
2996 | KEY_RESERVED, | |
2997 | KEY_RESERVED, | |
2998 | KEY_RESERVED, | |
2999 | KEY_RESERVED, | |
3000 | BTN_LEFT | |
3001 | }; | |
3002 | ||
3003 | static struct mxt_acpi_platform_data chromebook_platform_data[] = { | |
3004 | { | |
3005 | /* Touchpad */ | |
3006 | .hid = "ATML0000", | |
3007 | .pdata = { | |
3008 | .t19_num_keys = ARRAY_SIZE(chromebook_tp_buttons), | |
3009 | .t19_keymap = chromebook_tp_buttons, | |
3010 | }, | |
3011 | }, | |
3012 | { | |
3013 | /* Touchscreen */ | |
3014 | .hid = "ATML0001", | |
3015 | }, | |
3016 | { } | |
3017 | }; | |
3018 | ||
4f8d8088 DT |
3019 | static const struct dmi_system_id mxt_dmi_table[] = { |
3020 | { | |
3021 | /* 2015 Google Pixel */ | |
3022 | .ident = "Chromebook Pixel 2", | |
3023 | .matches = { | |
3024 | DMI_MATCH(DMI_SYS_VENDOR, "GOOGLE"), | |
3025 | DMI_MATCH(DMI_PRODUCT_NAME, "Samus"), | |
3026 | }, | |
3027 | .driver_data = samus_platform_data, | |
3028 | }, | |
c67566c6 DT |
3029 | { |
3030 | /* Other Google Chromebooks */ | |
3031 | .ident = "Chromebook", | |
3032 | .matches = { | |
3033 | DMI_MATCH(DMI_SYS_VENDOR, "GOOGLE"), | |
3034 | }, | |
3035 | .driver_data = chromebook_platform_data, | |
3036 | }, | |
4f8d8088 DT |
3037 | { } |
3038 | }; | |
3039 | ||
3040 | static const struct mxt_platform_data *mxt_parse_acpi(struct i2c_client *client) | |
3041 | { | |
3042 | struct acpi_device *adev; | |
3043 | const struct dmi_system_id *system_id; | |
3044 | const struct mxt_acpi_platform_data *acpi_pdata; | |
3045 | ||
3046 | /* | |
3047 | * Ignore ACPI devices representing bootloader mode. | |
3048 | * | |
3049 | * This is a bit of a hack: Google Chromebook BIOS creates ACPI | |
3050 | * devices for both application and bootloader modes, but we are | |
3051 | * interested in application mode only (if device is in bootloader | |
3052 | * mode we'll end up switching into application anyway). So far | |
3053 | * application mode addresses were all above 0x40, so we'll use it | |
3054 | * as a threshold. | |
3055 | */ | |
3056 | if (client->addr < 0x40) | |
3057 | return ERR_PTR(-ENXIO); | |
3058 | ||
3059 | adev = ACPI_COMPANION(&client->dev); | |
3060 | if (!adev) | |
3061 | return ERR_PTR(-ENOENT); | |
3062 | ||
3063 | system_id = dmi_first_match(mxt_dmi_table); | |
3064 | if (!system_id) | |
3065 | return ERR_PTR(-ENOENT); | |
3066 | ||
3067 | acpi_pdata = system_id->driver_data; | |
3068 | if (!acpi_pdata) | |
3069 | return ERR_PTR(-ENOENT); | |
3070 | ||
3071 | while (acpi_pdata->hid) { | |
3072 | if (!strcmp(acpi_device_hid(adev), acpi_pdata->hid)) | |
3073 | return &acpi_pdata->pdata; | |
3074 | ||
3075 | acpi_pdata++; | |
3076 | } | |
3077 | ||
3078 | return ERR_PTR(-ENOENT); | |
3079 | } | |
3080 | #else | |
3081 | static const struct mxt_platform_data *mxt_parse_acpi(struct i2c_client *client) | |
3082 | { | |
3083 | return ERR_PTR(-ENOENT); | |
78188be3 SW |
3084 | } |
3085 | #endif | |
3086 | ||
4f8d8088 DT |
3087 | static const struct mxt_platform_data * |
3088 | mxt_get_platform_data(struct i2c_client *client) | |
3089 | { | |
3090 | const struct mxt_platform_data *pdata; | |
3091 | ||
3092 | pdata = dev_get_platdata(&client->dev); | |
3093 | if (pdata) | |
3094 | return pdata; | |
3095 | ||
3096 | pdata = mxt_parse_dt(client); | |
3097 | if (!IS_ERR(pdata) || PTR_ERR(pdata) != -ENOENT) | |
3098 | return pdata; | |
3099 | ||
3100 | pdata = mxt_parse_acpi(client); | |
3101 | if (!IS_ERR(pdata) || PTR_ERR(pdata) != -ENOENT) | |
3102 | return pdata; | |
3103 | ||
3104 | dev_err(&client->dev, "No platform data specified\n"); | |
3105 | return ERR_PTR(-EINVAL); | |
3106 | } | |
3107 | ||
78188be3 | 3108 | static int mxt_probe(struct i2c_client *client, const struct i2c_device_id *id) |
4cf51c38 | 3109 | { |
7686b108 | 3110 | struct mxt_data *data; |
78188be3 | 3111 | const struct mxt_platform_data *pdata; |
4cf51c38 JS |
3112 | int error; |
3113 | ||
4f8d8088 DT |
3114 | pdata = mxt_get_platform_data(client); |
3115 | if (IS_ERR(pdata)) | |
3116 | return PTR_ERR(pdata); | |
4cf51c38 | 3117 | |
7686b108 | 3118 | data = kzalloc(sizeof(struct mxt_data), GFP_KERNEL); |
7a53d609 | 3119 | if (!data) { |
4cf51c38 | 3120 | dev_err(&client->dev, "Failed to allocate memory\n"); |
7a53d609 | 3121 | return -ENOMEM; |
4cf51c38 JS |
3122 | } |
3123 | ||
ec02ac2b DK |
3124 | snprintf(data->phys, sizeof(data->phys), "i2c-%u-%04x/input0", |
3125 | client->adapter->nr, client->addr); | |
22dfab7f | 3126 | |
910d8051 | 3127 | data->client = client; |
910d8051 JS |
3128 | data->pdata = pdata; |
3129 | data->irq = client->irq; | |
7a53d609 | 3130 | i2c_set_clientdata(client, data); |
910d8051 | 3131 | |
d79e7e47 | 3132 | init_completion(&data->bl_completion); |
a4a2ef46 | 3133 | init_completion(&data->reset_completion); |
c3f78043 | 3134 | init_completion(&data->crc_completion); |
d79e7e47 | 3135 | |
dd24dcf5 ND |
3136 | error = request_threaded_irq(client->irq, NULL, mxt_interrupt, |
3137 | pdata->irqflags | IRQF_ONESHOT, | |
3138 | client->name, data); | |
3139 | if (error) { | |
3140 | dev_err(&client->dev, "Failed to register interrupt\n"); | |
3141 | goto err_free_mem; | |
3142 | } | |
3143 | ||
3144 | disable_irq(client->irq); | |
3145 | ||
cb159115 DK |
3146 | error = mxt_initialize(data); |
3147 | if (error) | |
7a53d609 | 3148 | goto err_free_irq; |
4cf51c38 | 3149 | |
7686b108 | 3150 | error = sysfs_create_group(&client->dev.kobj, &mxt_attr_group); |
7bed6805 ND |
3151 | if (error) { |
3152 | dev_err(&client->dev, "Failure %d creating sysfs group\n", | |
3153 | error); | |
7a53d609 | 3154 | goto err_free_object; |
7bed6805 | 3155 | } |
4cf51c38 JS |
3156 | |
3157 | return 0; | |
3158 | ||
4cf51c38 | 3159 | err_free_object: |
58e4aeee | 3160 | mxt_free_input_device(data); |
5f3f9bc2 | 3161 | mxt_free_object_table(data); |
dd24dcf5 ND |
3162 | err_free_irq: |
3163 | free_irq(client->irq, data); | |
4cf51c38 | 3164 | err_free_mem: |
4cf51c38 JS |
3165 | kfree(data); |
3166 | return error; | |
3167 | } | |
3168 | ||
e2619cf7 | 3169 | static int mxt_remove(struct i2c_client *client) |
4cf51c38 | 3170 | { |
7686b108 | 3171 | struct mxt_data *data = i2c_get_clientdata(client); |
4cf51c38 | 3172 | |
7686b108 | 3173 | sysfs_remove_group(&client->dev.kobj, &mxt_attr_group); |
4cf51c38 | 3174 | free_irq(data->irq, data); |
58e4aeee | 3175 | mxt_free_input_device(data); |
5f3f9bc2 | 3176 | mxt_free_object_table(data); |
4cf51c38 JS |
3177 | kfree(data); |
3178 | ||
3179 | return 0; | |
3180 | } | |
3181 | ||
02b6a58b | 3182 | static int __maybe_unused mxt_suspend(struct device *dev) |
4cf51c38 | 3183 | { |
8b5fce06 | 3184 | struct i2c_client *client = to_i2c_client(dev); |
7686b108 | 3185 | struct mxt_data *data = i2c_get_clientdata(client); |
4cf51c38 JS |
3186 | struct input_dev *input_dev = data->input_dev; |
3187 | ||
50fabb02 PX |
3188 | if (!input_dev) |
3189 | return 0; | |
3190 | ||
4cf51c38 JS |
3191 | mutex_lock(&input_dev->mutex); |
3192 | ||
3193 | if (input_dev->users) | |
7686b108 | 3194 | mxt_stop(data); |
4cf51c38 JS |
3195 | |
3196 | mutex_unlock(&input_dev->mutex); | |
3197 | ||
3198 | return 0; | |
3199 | } | |
3200 | ||
02b6a58b | 3201 | static int __maybe_unused mxt_resume(struct device *dev) |
4cf51c38 | 3202 | { |
8b5fce06 | 3203 | struct i2c_client *client = to_i2c_client(dev); |
7686b108 | 3204 | struct mxt_data *data = i2c_get_clientdata(client); |
4cf51c38 JS |
3205 | struct input_dev *input_dev = data->input_dev; |
3206 | ||
50fabb02 PX |
3207 | if (!input_dev) |
3208 | return 0; | |
3209 | ||
4cf51c38 JS |
3210 | mutex_lock(&input_dev->mutex); |
3211 | ||
3212 | if (input_dev->users) | |
7686b108 | 3213 | mxt_start(data); |
4cf51c38 JS |
3214 | |
3215 | mutex_unlock(&input_dev->mutex); | |
3216 | ||
3217 | return 0; | |
3218 | } | |
4cf51c38 | 3219 | |
3a73c816 DK |
3220 | static SIMPLE_DEV_PM_OPS(mxt_pm_ops, mxt_suspend, mxt_resume); |
3221 | ||
78188be3 SW |
3222 | static const struct of_device_id mxt_of_match[] = { |
3223 | { .compatible = "atmel,maxtouch", }, | |
3224 | {}, | |
3225 | }; | |
3226 | MODULE_DEVICE_TABLE(of, mxt_of_match); | |
3227 | ||
4f8d8088 DT |
3228 | #ifdef CONFIG_ACPI |
3229 | static const struct acpi_device_id mxt_acpi_id[] = { | |
3230 | { "ATML0000", 0 }, /* Touchpad */ | |
3231 | { "ATML0001", 0 }, /* Touchscreen */ | |
3232 | { } | |
3233 | }; | |
3234 | MODULE_DEVICE_TABLE(acpi, mxt_acpi_id); | |
3235 | #endif | |
3236 | ||
7686b108 | 3237 | static const struct i2c_device_id mxt_id[] = { |
4cf51c38 | 3238 | { "qt602240_ts", 0 }, |
7686b108 | 3239 | { "atmel_mxt_ts", 0 }, |
22dfab7f | 3240 | { "atmel_mxt_tp", 0 }, |
b7d21058 | 3241 | { "maxtouch", 0 }, |
46ee2a05 | 3242 | { "mXT224", 0 }, |
4cf51c38 JS |
3243 | { } |
3244 | }; | |
7686b108 | 3245 | MODULE_DEVICE_TABLE(i2c, mxt_id); |
4cf51c38 | 3246 | |
7686b108 | 3247 | static struct i2c_driver mxt_driver = { |
4cf51c38 | 3248 | .driver = { |
7686b108 | 3249 | .name = "atmel_mxt_ts", |
78188be3 | 3250 | .of_match_table = of_match_ptr(mxt_of_match), |
4f8d8088 | 3251 | .acpi_match_table = ACPI_PTR(mxt_acpi_id), |
7686b108 | 3252 | .pm = &mxt_pm_ops, |
4cf51c38 | 3253 | }, |
7686b108 | 3254 | .probe = mxt_probe, |
1cb0aa88 | 3255 | .remove = mxt_remove, |
7686b108 | 3256 | .id_table = mxt_id, |
4cf51c38 JS |
3257 | }; |
3258 | ||
1b92c1cf | 3259 | module_i2c_driver(mxt_driver); |
4cf51c38 JS |
3260 | |
3261 | /* Module information */ | |
3262 | MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>"); | |
7686b108 | 3263 | MODULE_DESCRIPTION("Atmel maXTouch Touchscreen driver"); |
4cf51c38 | 3264 | MODULE_LICENSE("GPL"); |