Commit | Line | Data |
---|---|---|
2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
4cf51c38 | 2 | /* |
7686b108 | 3 | * Atmel maXTouch Touchscreen driver |
4cf51c38 JS |
4 | * |
5 | * Copyright (C) 2010 Samsung Electronics Co.Ltd | |
50a77c65 | 6 | * Copyright (C) 2011-2014 Atmel Corporation |
1e0c0c5b | 7 | * Copyright (C) 2012 Google, Inc. |
f3c4a8f8 | 8 | * Copyright (C) 2016 Zodiac Inflight Innovations |
1e0c0c5b | 9 | * |
4cf51c38 | 10 | * Author: Joonyoung Shim <jy0922.shim@samsung.com> |
4cf51c38 JS |
11 | */ |
12 | ||
4f8d8088 DT |
13 | #include <linux/acpi.h> |
14 | #include <linux/dmi.h> | |
4cf51c38 | 15 | #include <linux/module.h> |
d79e7e47 BL |
16 | #include <linux/init.h> |
17 | #include <linux/completion.h> | |
4cf51c38 JS |
18 | #include <linux/delay.h> |
19 | #include <linux/firmware.h> | |
20 | #include <linux/i2c.h> | |
8b86c1c2 | 21 | #include <linux/input/mt.h> |
4cf51c38 | 22 | #include <linux/interrupt.h> |
74d905d2 | 23 | #include <linux/irq.h> |
78188be3 | 24 | #include <linux/of.h> |
96a938aa | 25 | #include <linux/property.h> |
4cf51c38 | 26 | #include <linux/slab.h> |
f657b00d | 27 | #include <linux/gpio/consumer.h> |
b23157dc | 28 | #include <asm/unaligned.h> |
ecfdd7e2 ND |
29 | #include <media/v4l2-device.h> |
30 | #include <media/v4l2-ioctl.h> | |
31 | #include <media/videobuf2-v4l2.h> | |
32 | #include <media/videobuf2-vmalloc.h> | |
4cf51c38 | 33 | |
50a77c65 | 34 | /* Firmware files */ |
7686b108 | 35 | #define MXT_FW_NAME "maxtouch.fw" |
50a77c65 ND |
36 | #define MXT_CFG_NAME "maxtouch.cfg" |
37 | #define MXT_CFG_MAGIC "OBP_RAW V1" | |
4cf51c38 JS |
38 | |
39 | /* Registers */ | |
7686b108 | 40 | #define MXT_OBJECT_START 0x07 |
7686b108 | 41 | #define MXT_OBJECT_SIZE 6 |
4ce6fa01 ND |
42 | #define MXT_INFO_CHECKSUM_SIZE 3 |
43 | #define MXT_MAX_BLOCK_WRITE 256 | |
4cf51c38 JS |
44 | |
45 | /* Object types */ | |
81c88a71 IV |
46 | #define MXT_DEBUG_DIAGNOSTIC_T37 37 |
47 | #define MXT_GEN_MESSAGE_T5 5 | |
48 | #define MXT_GEN_COMMAND_T6 6 | |
49 | #define MXT_GEN_POWER_T7 7 | |
50 | #define MXT_GEN_ACQUIRE_T8 8 | |
51 | #define MXT_GEN_DATASOURCE_T53 53 | |
52 | #define MXT_TOUCH_MULTI_T9 9 | |
53 | #define MXT_TOUCH_KEYARRAY_T15 15 | |
54 | #define MXT_TOUCH_PROXIMITY_T23 23 | |
55 | #define MXT_TOUCH_PROXKEY_T52 52 | |
56 | #define MXT_PROCI_GRIPFACE_T20 20 | |
57 | #define MXT_PROCG_NOISE_T22 22 | |
58 | #define MXT_PROCI_ONETOUCH_T24 24 | |
59 | #define MXT_PROCI_TWOTOUCH_T27 27 | |
60 | #define MXT_PROCI_GRIP_T40 40 | |
61 | #define MXT_PROCI_PALM_T41 41 | |
62 | #define MXT_PROCI_TOUCHSUPPRESSION_T42 42 | |
63 | #define MXT_PROCI_STYLUS_T47 47 | |
64 | #define MXT_PROCG_NOISESUPPRESSION_T48 48 | |
65 | #define MXT_SPT_COMMSCONFIG_T18 18 | |
66 | #define MXT_SPT_GPIOPWM_T19 19 | |
67 | #define MXT_SPT_SELFTEST_T25 25 | |
68 | #define MXT_SPT_CTECONFIG_T28 28 | |
69 | #define MXT_SPT_USERDATA_T38 38 | |
70 | #define MXT_SPT_DIGITIZER_T43 43 | |
71 | #define MXT_SPT_MESSAGECOUNT_T44 44 | |
72 | #define MXT_SPT_CTECONFIG_T46 46 | |
15082bdb | 73 | #define MXT_SPT_DYNAMICCONFIGURATIONCONTAINER_T71 71 |
b23157dc | 74 | #define MXT_TOUCH_MULTITOUCHSCREEN_T100 100 |
81c88a71 | 75 | |
5f3f9bc2 ND |
76 | /* MXT_GEN_MESSAGE_T5 object */ |
77 | #define MXT_RPTID_NOMSG 0xff | |
78 | ||
81c88a71 | 79 | /* MXT_GEN_COMMAND_T6 field */ |
7686b108 IV |
80 | #define MXT_COMMAND_RESET 0 |
81 | #define MXT_COMMAND_BACKUPNV 1 | |
82 | #define MXT_COMMAND_CALIBRATE 2 | |
83 | #define MXT_COMMAND_REPORTALL 3 | |
84 | #define MXT_COMMAND_DIAGNOSTIC 5 | |
85 | ||
a4a2ef46 | 86 | /* Define for T6 status byte */ |
204b4eae ND |
87 | #define MXT_T6_STATUS_RESET BIT(7) |
88 | #define MXT_T6_STATUS_OFL BIT(6) | |
89 | #define MXT_T6_STATUS_SIGERR BIT(5) | |
90 | #define MXT_T6_STATUS_CAL BIT(4) | |
91 | #define MXT_T6_STATUS_CFGERR BIT(3) | |
92 | #define MXT_T6_STATUS_COMSERR BIT(2) | |
a4a2ef46 | 93 | |
81c88a71 | 94 | /* MXT_GEN_POWER_T7 field */ |
7f3884f7 ND |
95 | struct t7_config { |
96 | u8 idle; | |
97 | u8 active; | |
98 | } __packed; | |
99 | ||
100 | #define MXT_POWER_CFG_RUN 0 | |
101 | #define MXT_POWER_CFG_DEEPSLEEP 1 | |
7686b108 | 102 | |
81c88a71 | 103 | /* MXT_TOUCH_MULTI_T9 field */ |
7f3884f7 | 104 | #define MXT_T9_CTRL 0 |
2786489f ND |
105 | #define MXT_T9_XSIZE 3 |
106 | #define MXT_T9_YSIZE 4 | |
61dc1aba ND |
107 | #define MXT_T9_ORIENT 9 |
108 | #define MXT_T9_RANGE 18 | |
109 | ||
f3889ed1 | 110 | /* MXT_TOUCH_MULTI_T9 status */ |
204b4eae ND |
111 | #define MXT_T9_UNGRIP BIT(0) |
112 | #define MXT_T9_SUPPRESS BIT(1) | |
113 | #define MXT_T9_AMP BIT(2) | |
114 | #define MXT_T9_VECTOR BIT(3) | |
115 | #define MXT_T9_MOVE BIT(4) | |
116 | #define MXT_T9_RELEASE BIT(5) | |
117 | #define MXT_T9_PRESS BIT(6) | |
118 | #define MXT_T9_DETECT BIT(7) | |
f3889ed1 | 119 | |
61dc1aba | 120 | struct t9_range { |
1c0276d5 ND |
121 | __le16 x; |
122 | __le16 y; | |
61dc1aba ND |
123 | } __packed; |
124 | ||
f3889ed1 | 125 | /* MXT_TOUCH_MULTI_T9 orient */ |
204b4eae ND |
126 | #define MXT_T9_ORIENT_SWITCH BIT(0) |
127 | #define MXT_T9_ORIENT_INVERTX BIT(1) | |
128 | #define MXT_T9_ORIENT_INVERTY BIT(2) | |
7686b108 | 129 | |
81c88a71 | 130 | /* MXT_SPT_COMMSCONFIG_T18 */ |
7686b108 IV |
131 | #define MXT_COMMS_CTRL 0 |
132 | #define MXT_COMMS_CMD 1 | |
74d905d2 | 133 | #define MXT_COMMS_RETRIGEN BIT(6) |
7686b108 | 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 | 193 | #define MXT_BACKUP_TIME 50 /* msec */ |
ca1cd36c SR |
194 | #define MXT_RESET_GPIO_TIME 20 /* msec */ |
195 | #define MXT_RESET_INVALID_CHG 100 /* msec */ | |
8343bce1 | 196 | #define MXT_RESET_TIME 200 /* msec */ |
a4a2ef46 | 197 | #define MXT_RESET_TIMEOUT 3000 /* msec */ |
c3f78043 | 198 | #define MXT_CRC_TIMEOUT 1000 /* msec */ |
a0434b75 BL |
199 | #define MXT_FW_RESET_TIME 3000 /* msec */ |
200 | #define MXT_FW_CHG_TIMEOUT 300 /* msec */ | |
4cf51c38 JS |
201 | |
202 | /* Command to unlock bootloader */ | |
7686b108 IV |
203 | #define MXT_UNLOCK_CMD_MSB 0xaa |
204 | #define MXT_UNLOCK_CMD_LSB 0xdc | |
4cf51c38 JS |
205 | |
206 | /* Bootloader mode status */ | |
7686b108 IV |
207 | #define MXT_WAITING_BOOTLOAD_CMD 0xc0 /* valid 7 6 bit only */ |
208 | #define MXT_WAITING_FRAME_DATA 0x80 /* valid 7 6 bit only */ | |
209 | #define MXT_FRAME_CRC_CHECK 0x02 | |
210 | #define MXT_FRAME_CRC_FAIL 0x03 | |
211 | #define MXT_FRAME_CRC_PASS 0x04 | |
212 | #define MXT_APP_CRC_FAIL 0x40 /* valid 7 8 bit only */ | |
213 | #define MXT_BOOT_STATUS_MASK 0x3f | |
204b4eae | 214 | #define MXT_BOOT_EXTENDED_ID BIT(5) |
e57a66aa | 215 | #define MXT_BOOT_ID_MASK 0x1f |
4cf51c38 | 216 | |
4cf51c38 | 217 | /* Touchscreen absolute values */ |
7686b108 | 218 | #define MXT_MAX_AREA 0xff |
4cf51c38 | 219 | |
22dfab7f DK |
220 | #define MXT_PIXELS_PER_MM 20 |
221 | ||
7686b108 | 222 | struct mxt_info { |
4cf51c38 JS |
223 | u8 family_id; |
224 | u8 variant_id; | |
225 | u8 version; | |
226 | u8 build; | |
227 | u8 matrix_xsize; | |
228 | u8 matrix_ysize; | |
229 | u8 object_num; | |
230 | }; | |
231 | ||
7686b108 | 232 | struct mxt_object { |
4cf51c38 JS |
233 | u8 type; |
234 | u16 start_address; | |
1e0c0c5b DK |
235 | u8 size_minus_one; |
236 | u8 instances_minus_one; | |
4cf51c38 | 237 | u8 num_report_ids; |
333e5a9a | 238 | } __packed; |
4cf51c38 | 239 | |
d6a39404 ND |
240 | struct mxt_dbg { |
241 | u16 t37_address; | |
242 | u16 diag_cmd_address; | |
243 | struct t37_debug *t37_buf; | |
244 | unsigned int t37_pages; | |
245 | unsigned int t37_nodes; | |
ecfdd7e2 ND |
246 | |
247 | struct v4l2_device v4l2; | |
248 | struct v4l2_pix_format format; | |
249 | struct video_device vdev; | |
250 | struct vb2_queue queue; | |
251 | struct mutex lock; | |
252 | int input; | |
253 | }; | |
254 | ||
06b3d3f3 ND |
255 | enum v4l_dbg_inputs { |
256 | MXT_V4L_INPUT_DELTAS, | |
257 | MXT_V4L_INPUT_REFS, | |
258 | MXT_V4L_INPUT_MAX, | |
259 | }; | |
260 | ||
96a938aa DT |
261 | enum mxt_suspend_mode { |
262 | MXT_SUSPEND_DEEP_SLEEP = 0, | |
263 | MXT_SUSPEND_T9_CTRL = 1, | |
264 | }; | |
265 | ||
f865df73 ND |
266 | /* Config update context */ |
267 | struct mxt_cfg { | |
a4891f10 | 268 | u8 *raw; |
f865df73 ND |
269 | size_t raw_size; |
270 | off_t raw_pos; | |
271 | ||
272 | u8 *mem; | |
273 | size_t mem_size; | |
274 | int start_ofs; | |
275 | ||
276 | struct mxt_info info; | |
277 | }; | |
278 | ||
4cf51c38 | 279 | /* Each client has this additional data */ |
7686b108 | 280 | struct mxt_data { |
4cf51c38 JS |
281 | struct i2c_client *client; |
282 | struct input_dev *input_dev; | |
ec02ac2b | 283 | char phys[64]; /* device physical location */ |
7686b108 | 284 | struct mxt_object *object_table; |
068bdb67 ND |
285 | struct mxt_info *info; |
286 | void *raw_info_block; | |
4cf51c38 | 287 | unsigned int irq; |
910d8051 JS |
288 | unsigned int max_x; |
289 | unsigned int max_y; | |
de601f71 ND |
290 | bool invertx; |
291 | bool inverty; | |
1c0276d5 | 292 | bool xy_switch; |
2786489f ND |
293 | u8 xsize; |
294 | u8 ysize; | |
d79e7e47 | 295 | bool in_bootloader; |
4ce6fa01 | 296 | u16 mem_size; |
b23157dc ND |
297 | u8 t100_aux_ampl; |
298 | u8 t100_aux_area; | |
299 | u8 t100_aux_vect; | |
9d8dc3e5 | 300 | u8 max_reportid; |
c3f78043 | 301 | u32 config_crc; |
4ce6fa01 | 302 | u32 info_crc; |
f28a842d | 303 | u8 bootloader_addr; |
5f3f9bc2 | 304 | u8 *msg_buf; |
497767d1 | 305 | u8 t6_status; |
b9b05a89 | 306 | bool update_input; |
9d8dc3e5 ND |
307 | u8 last_message_count; |
308 | u8 num_touchids; | |
b23157dc | 309 | u8 multitouch; |
7f3884f7 | 310 | struct t7_config t7_cfg; |
d6a39404 | 311 | struct mxt_dbg dbg; |
f657b00d | 312 | struct gpio_desc *reset_gpio; |
74d905d2 | 313 | bool use_retrigen_workaround; |
333e5a9a DK |
314 | |
315 | /* Cached parameters from object table */ | |
b9b05a89 | 316 | u16 T5_address; |
5f3f9bc2 | 317 | u8 T5_msg_size; |
fdf80421 | 318 | u8 T6_reportid; |
a4a2ef46 | 319 | u16 T6_address; |
4ce6fa01 | 320 | u16 T7_address; |
15082bdb | 321 | u16 T71_address; |
333e5a9a DK |
322 | u8 T9_reportid_min; |
323 | u8 T9_reportid_max; | |
74d905d2 | 324 | u16 T18_address; |
22dfab7f | 325 | u8 T19_reportid; |
9d8dc3e5 | 326 | u16 T44_address; |
b23157dc ND |
327 | u8 T100_reportid_min; |
328 | u8 T100_reportid_max; | |
d79e7e47 BL |
329 | |
330 | /* for fw update in bootloader */ | |
331 | struct completion bl_completion; | |
a4a2ef46 IV |
332 | |
333 | /* for reset handling */ | |
334 | struct completion reset_completion; | |
c3f78043 ND |
335 | |
336 | /* for config update handling */ | |
337 | struct completion crc_completion; | |
d80808e1 | 338 | |
96a938aa DT |
339 | u32 *t19_keymap; |
340 | unsigned int t19_num_keys; | |
341 | ||
d80808e1 | 342 | enum mxt_suspend_mode suspend_mode; |
4cf51c38 JS |
343 | }; |
344 | ||
ecfdd7e2 ND |
345 | struct mxt_vb2_buffer { |
346 | struct vb2_buffer vb; | |
347 | struct list_head list; | |
348 | }; | |
349 | ||
1e0c0c5b DK |
350 | static size_t mxt_obj_size(const struct mxt_object *obj) |
351 | { | |
352 | return obj->size_minus_one + 1; | |
353 | } | |
354 | ||
355 | static size_t mxt_obj_instances(const struct mxt_object *obj) | |
356 | { | |
357 | return obj->instances_minus_one + 1; | |
358 | } | |
359 | ||
7686b108 | 360 | static bool mxt_object_readable(unsigned int type) |
4cf51c38 JS |
361 | { |
362 | switch (type) { | |
81c88a71 IV |
363 | case MXT_GEN_COMMAND_T6: |
364 | case MXT_GEN_POWER_T7: | |
365 | case MXT_GEN_ACQUIRE_T8: | |
366 | case MXT_GEN_DATASOURCE_T53: | |
367 | case MXT_TOUCH_MULTI_T9: | |
368 | case MXT_TOUCH_KEYARRAY_T15: | |
369 | case MXT_TOUCH_PROXIMITY_T23: | |
370 | case MXT_TOUCH_PROXKEY_T52: | |
089b50d9 | 371 | case MXT_TOUCH_MULTITOUCHSCREEN_T100: |
81c88a71 IV |
372 | case MXT_PROCI_GRIPFACE_T20: |
373 | case MXT_PROCG_NOISE_T22: | |
374 | case MXT_PROCI_ONETOUCH_T24: | |
375 | case MXT_PROCI_TWOTOUCH_T27: | |
376 | case MXT_PROCI_GRIP_T40: | |
377 | case MXT_PROCI_PALM_T41: | |
378 | case MXT_PROCI_TOUCHSUPPRESSION_T42: | |
379 | case MXT_PROCI_STYLUS_T47: | |
380 | case MXT_PROCG_NOISESUPPRESSION_T48: | |
381 | case MXT_SPT_COMMSCONFIG_T18: | |
382 | case MXT_SPT_GPIOPWM_T19: | |
383 | case MXT_SPT_SELFTEST_T25: | |
384 | case MXT_SPT_CTECONFIG_T28: | |
385 | case MXT_SPT_USERDATA_T38: | |
386 | case MXT_SPT_DIGITIZER_T43: | |
387 | case MXT_SPT_CTECONFIG_T46: | |
15082bdb | 388 | case MXT_SPT_DYNAMICCONFIGURATIONCONTAINER_T71: |
4cf51c38 JS |
389 | return true; |
390 | default: | |
391 | return false; | |
392 | } | |
393 | } | |
394 | ||
5f3f9bc2 | 395 | static void mxt_dump_message(struct mxt_data *data, u8 *message) |
4cf51c38 | 396 | { |
5f3f9bc2 ND |
397 | dev_dbg(&data->client->dev, "message: %*ph\n", |
398 | data->T5_msg_size, message); | |
4cf51c38 JS |
399 | } |
400 | ||
a4a2ef46 IV |
401 | static int mxt_wait_for_completion(struct mxt_data *data, |
402 | struct completion *comp, | |
403 | unsigned int timeout_ms) | |
d79e7e47 BL |
404 | { |
405 | struct device *dev = &data->client->dev; | |
d79e7e47 BL |
406 | unsigned long timeout = msecs_to_jiffies(timeout_ms); |
407 | long ret; | |
408 | ||
409 | ret = wait_for_completion_interruptible_timeout(comp, timeout); | |
410 | if (ret < 0) { | |
411 | return ret; | |
412 | } else if (ret == 0) { | |
413 | dev_err(dev, "Wait for completion timed out.\n"); | |
414 | return -ETIMEDOUT; | |
415 | } | |
416 | return 0; | |
417 | } | |
418 | ||
f28a842d ND |
419 | static int mxt_bootloader_read(struct mxt_data *data, |
420 | u8 *val, unsigned int count) | |
421 | { | |
422 | int ret; | |
423 | struct i2c_msg msg; | |
424 | ||
425 | msg.addr = data->bootloader_addr; | |
426 | msg.flags = data->client->flags & I2C_M_TEN; | |
427 | msg.flags |= I2C_M_RD; | |
428 | msg.len = count; | |
429 | msg.buf = val; | |
430 | ||
431 | ret = i2c_transfer(data->client->adapter, &msg, 1); | |
f28a842d ND |
432 | if (ret == 1) { |
433 | ret = 0; | |
434 | } else { | |
435 | ret = ret < 0 ? ret : -EIO; | |
436 | dev_err(&data->client->dev, "%s: i2c recv failed (%d)\n", | |
437 | __func__, ret); | |
438 | } | |
439 | ||
440 | return ret; | |
441 | } | |
442 | ||
443 | static int mxt_bootloader_write(struct mxt_data *data, | |
444 | const u8 * const val, unsigned int count) | |
445 | { | |
446 | int ret; | |
447 | struct i2c_msg msg; | |
448 | ||
449 | msg.addr = data->bootloader_addr; | |
450 | msg.flags = data->client->flags & I2C_M_TEN; | |
451 | msg.len = count; | |
452 | msg.buf = (u8 *)val; | |
453 | ||
454 | ret = i2c_transfer(data->client->adapter, &msg, 1); | |
455 | if (ret == 1) { | |
456 | ret = 0; | |
457 | } else { | |
458 | ret = ret < 0 ? ret : -EIO; | |
459 | dev_err(&data->client->dev, "%s: i2c send failed (%d)\n", | |
460 | __func__, ret); | |
461 | } | |
462 | ||
463 | return ret; | |
464 | } | |
465 | ||
8efaa5e5 | 466 | static int mxt_lookup_bootloader_address(struct mxt_data *data, bool retry) |
f28a842d ND |
467 | { |
468 | u8 appmode = data->client->addr; | |
469 | u8 bootloader; | |
068bdb67 | 470 | u8 family_id = data->info ? data->info->family_id : 0; |
f28a842d ND |
471 | |
472 | switch (appmode) { | |
473 | case 0x4a: | |
474 | case 0x4b: | |
44a0bab2 | 475 | /* Chips after 1664S use different scheme */ |
068bdb67 | 476 | if (retry || family_id >= 0xa2) { |
44a0bab2 ND |
477 | bootloader = appmode - 0x24; |
478 | break; | |
479 | } | |
df561f66 | 480 | fallthrough; /* for normal case */ |
f28a842d ND |
481 | case 0x4c: |
482 | case 0x4d: | |
483 | case 0x5a: | |
484 | case 0x5b: | |
485 | bootloader = appmode - 0x26; | |
486 | break; | |
6cd1ab0f | 487 | |
f28a842d ND |
488 | default: |
489 | dev_err(&data->client->dev, | |
490 | "Appmode i2c address 0x%02x not found\n", | |
491 | appmode); | |
492 | return -EINVAL; | |
493 | } | |
494 | ||
495 | data->bootloader_addr = bootloader; | |
496 | return 0; | |
497 | } | |
498 | ||
6cd1ab0f | 499 | static int mxt_probe_bootloader(struct mxt_data *data, bool alt_address) |
a9fdd1e6 ND |
500 | { |
501 | struct device *dev = &data->client->dev; | |
6cd1ab0f | 502 | int error; |
a9fdd1e6 ND |
503 | u8 val; |
504 | bool crc_failure; | |
505 | ||
6cd1ab0f DT |
506 | error = mxt_lookup_bootloader_address(data, alt_address); |
507 | if (error) | |
508 | return error; | |
a9fdd1e6 | 509 | |
6cd1ab0f DT |
510 | error = mxt_bootloader_read(data, &val, 1); |
511 | if (error) | |
512 | return error; | |
a9fdd1e6 ND |
513 | |
514 | /* Check app crc fail mode */ | |
515 | crc_failure = (val & ~MXT_BOOT_STATUS_MASK) == MXT_APP_CRC_FAIL; | |
516 | ||
517 | dev_err(dev, "Detected bootloader, status:%02X%s\n", | |
518 | val, crc_failure ? ", APP_CRC_FAIL" : ""); | |
519 | ||
520 | return 0; | |
521 | } | |
522 | ||
e57a66aa ND |
523 | static u8 mxt_get_bootloader_version(struct mxt_data *data, u8 val) |
524 | { | |
525 | struct device *dev = &data->client->dev; | |
526 | u8 buf[3]; | |
527 | ||
528 | if (val & MXT_BOOT_EXTENDED_ID) { | |
529 | if (mxt_bootloader_read(data, &buf[0], 3) != 0) { | |
530 | dev_err(dev, "%s: i2c failure\n", __func__); | |
68807a0c | 531 | return val; |
e57a66aa ND |
532 | } |
533 | ||
534 | dev_dbg(dev, "Bootloader ID:%d Version:%d\n", buf[1], buf[2]); | |
535 | ||
536 | return buf[0]; | |
537 | } else { | |
538 | dev_dbg(dev, "Bootloader ID:%d\n", val & MXT_BOOT_ID_MASK); | |
539 | ||
540 | return val; | |
541 | } | |
542 | } | |
543 | ||
385deb96 ND |
544 | static int mxt_check_bootloader(struct mxt_data *data, unsigned int state, |
545 | bool wait) | |
4cf51c38 | 546 | { |
f28a842d | 547 | struct device *dev = &data->client->dev; |
4cf51c38 | 548 | u8 val; |
d79e7e47 | 549 | int ret; |
4cf51c38 JS |
550 | |
551 | recheck: | |
385deb96 | 552 | if (wait) { |
d79e7e47 BL |
553 | /* |
554 | * In application update mode, the interrupt | |
555 | * line signals state transitions. We must wait for the | |
556 | * CHG assertion before reading the status byte. | |
557 | * Once the status byte has been read, the line is deasserted. | |
558 | */ | |
a4a2ef46 IV |
559 | ret = mxt_wait_for_completion(data, &data->bl_completion, |
560 | MXT_FW_CHG_TIMEOUT); | |
d79e7e47 BL |
561 | if (ret) { |
562 | /* | |
563 | * TODO: handle -ERESTARTSYS better by terminating | |
564 | * fw update process before returning to userspace | |
565 | * by writing length 0x000 to device (iff we are in | |
566 | * WAITING_FRAME_DATA state). | |
567 | */ | |
f28a842d | 568 | dev_err(dev, "Update wait error %d\n", ret); |
d79e7e47 BL |
569 | return ret; |
570 | } | |
571 | } | |
572 | ||
f28a842d ND |
573 | ret = mxt_bootloader_read(data, &val, 1); |
574 | if (ret) | |
575 | return ret; | |
4cf51c38 | 576 | |
e57a66aa ND |
577 | if (state == MXT_WAITING_BOOTLOAD_CMD) |
578 | val = mxt_get_bootloader_version(data, val); | |
579 | ||
4cf51c38 | 580 | switch (state) { |
7686b108 IV |
581 | case MXT_WAITING_BOOTLOAD_CMD: |
582 | case MXT_WAITING_FRAME_DATA: | |
a9fdd1e6 | 583 | case MXT_APP_CRC_FAIL: |
7686b108 | 584 | val &= ~MXT_BOOT_STATUS_MASK; |
4cf51c38 | 585 | break; |
7686b108 | 586 | case MXT_FRAME_CRC_PASS: |
f943c74a | 587 | if (val == MXT_FRAME_CRC_CHECK) { |
4cf51c38 | 588 | goto recheck; |
f943c74a ND |
589 | } else if (val == MXT_FRAME_CRC_FAIL) { |
590 | dev_err(dev, "Bootloader CRC fail\n"); | |
591 | return -EINVAL; | |
592 | } | |
4cf51c38 JS |
593 | break; |
594 | default: | |
595 | return -EINVAL; | |
596 | } | |
597 | ||
598 | if (val != state) { | |
f28a842d | 599 | dev_err(dev, "Invalid bootloader state %02X != %02X\n", |
7bed6805 | 600 | val, state); |
4cf51c38 JS |
601 | return -EINVAL; |
602 | } | |
603 | ||
604 | return 0; | |
605 | } | |
606 | ||
8efaa5e5 | 607 | static int mxt_send_bootloader_cmd(struct mxt_data *data, bool unlock) |
4cf51c38 | 608 | { |
f28a842d | 609 | int ret; |
4cf51c38 JS |
610 | u8 buf[2]; |
611 | ||
8efaa5e5 ND |
612 | if (unlock) { |
613 | buf[0] = MXT_UNLOCK_CMD_LSB; | |
614 | buf[1] = MXT_UNLOCK_CMD_MSB; | |
615 | } else { | |
616 | buf[0] = 0x01; | |
617 | buf[1] = 0x01; | |
618 | } | |
4cf51c38 | 619 | |
f28a842d ND |
620 | ret = mxt_bootloader_write(data, buf, 2); |
621 | if (ret) | |
622 | return ret; | |
4cf51c38 JS |
623 | |
624 | return 0; | |
625 | } | |
626 | ||
7686b108 | 627 | static int __mxt_read_reg(struct i2c_client *client, |
4cf51c38 JS |
628 | u16 reg, u16 len, void *val) |
629 | { | |
630 | struct i2c_msg xfer[2]; | |
631 | u8 buf[2]; | |
771733e3 | 632 | int ret; |
4cf51c38 JS |
633 | |
634 | buf[0] = reg & 0xff; | |
635 | buf[1] = (reg >> 8) & 0xff; | |
636 | ||
637 | /* Write register */ | |
638 | xfer[0].addr = client->addr; | |
639 | xfer[0].flags = 0; | |
640 | xfer[0].len = 2; | |
641 | xfer[0].buf = buf; | |
642 | ||
643 | /* Read data */ | |
644 | xfer[1].addr = client->addr; | |
645 | xfer[1].flags = I2C_M_RD; | |
646 | xfer[1].len = len; | |
647 | xfer[1].buf = val; | |
648 | ||
771733e3 DK |
649 | ret = i2c_transfer(client->adapter, xfer, 2); |
650 | if (ret == 2) { | |
651 | ret = 0; | |
652 | } else { | |
653 | if (ret >= 0) | |
654 | ret = -EIO; | |
655 | dev_err(&client->dev, "%s: i2c transfer failed (%d)\n", | |
656 | __func__, ret); | |
4cf51c38 JS |
657 | } |
658 | ||
771733e3 | 659 | return ret; |
4cf51c38 JS |
660 | } |
661 | ||
9638ab7c DK |
662 | static int __mxt_write_reg(struct i2c_client *client, u16 reg, u16 len, |
663 | const void *val) | |
4cf51c38 | 664 | { |
9638ab7c DK |
665 | u8 *buf; |
666 | size_t count; | |
771733e3 | 667 | int ret; |
4cf51c38 | 668 | |
9638ab7c DK |
669 | count = len + 2; |
670 | buf = kmalloc(count, GFP_KERNEL); | |
671 | if (!buf) | |
672 | return -ENOMEM; | |
4cf51c38 JS |
673 | |
674 | buf[0] = reg & 0xff; | |
675 | buf[1] = (reg >> 8) & 0xff; | |
9638ab7c | 676 | memcpy(&buf[2], val, len); |
4cf51c38 | 677 | |
9638ab7c DK |
678 | ret = i2c_master_send(client, buf, count); |
679 | if (ret == count) { | |
771733e3 DK |
680 | ret = 0; |
681 | } else { | |
682 | if (ret >= 0) | |
683 | ret = -EIO; | |
684 | dev_err(&client->dev, "%s: i2c send failed (%d)\n", | |
685 | __func__, ret); | |
4cf51c38 JS |
686 | } |
687 | ||
9638ab7c | 688 | kfree(buf); |
771733e3 | 689 | return ret; |
4cf51c38 JS |
690 | } |
691 | ||
9638ab7c | 692 | static int mxt_write_reg(struct i2c_client *client, u16 reg, u8 val) |
4cf51c38 | 693 | { |
9638ab7c | 694 | return __mxt_write_reg(client, reg, 1, &val); |
4cf51c38 JS |
695 | } |
696 | ||
7686b108 IV |
697 | static struct mxt_object * |
698 | mxt_get_object(struct mxt_data *data, u8 type) | |
4cf51c38 | 699 | { |
7686b108 | 700 | struct mxt_object *object; |
4cf51c38 JS |
701 | int i; |
702 | ||
068bdb67 | 703 | for (i = 0; i < data->info->object_num; i++) { |
4cf51c38 JS |
704 | object = data->object_table + i; |
705 | if (object->type == type) | |
706 | return object; | |
707 | } | |
708 | ||
50a77c65 | 709 | dev_warn(&data->client->dev, "Invalid object type T%u\n", type); |
4cf51c38 JS |
710 | return NULL; |
711 | } | |
712 | ||
497767d1 ND |
713 | static void mxt_proc_t6_messages(struct mxt_data *data, u8 *msg) |
714 | { | |
715 | struct device *dev = &data->client->dev; | |
716 | u8 status = msg[1]; | |
717 | u32 crc = msg[2] | (msg[3] << 8) | (msg[4] << 16); | |
718 | ||
497767d1 ND |
719 | if (crc != data->config_crc) { |
720 | data->config_crc = crc; | |
721 | dev_dbg(dev, "T6 Config Checksum: 0x%06X\n", crc); | |
722 | } | |
723 | ||
19a7121e ND |
724 | complete(&data->crc_completion); |
725 | ||
497767d1 ND |
726 | /* Detect reset */ |
727 | if (status & MXT_T6_STATUS_RESET) | |
728 | complete(&data->reset_completion); | |
729 | ||
730 | /* Output debug if status has changed */ | |
731 | if (status != data->t6_status) | |
732 | dev_dbg(dev, "T6 Status 0x%02X%s%s%s%s%s%s%s\n", | |
733 | status, | |
734 | status == 0 ? " OK" : "", | |
735 | status & MXT_T6_STATUS_RESET ? " RESET" : "", | |
736 | status & MXT_T6_STATUS_OFL ? " OFL" : "", | |
737 | status & MXT_T6_STATUS_SIGERR ? " SIGERR" : "", | |
738 | status & MXT_T6_STATUS_CAL ? " CAL" : "", | |
739 | status & MXT_T6_STATUS_CFGERR ? " CFGERR" : "", | |
740 | status & MXT_T6_STATUS_COMSERR ? " COMSERR" : ""); | |
741 | ||
742 | /* Save current status */ | |
743 | data->t6_status = status; | |
744 | } | |
745 | ||
7f405483 LT |
746 | static int mxt_write_object(struct mxt_data *data, |
747 | u8 type, u8 offset, u8 val) | |
748 | { | |
749 | struct mxt_object *object; | |
750 | u16 reg; | |
751 | ||
752 | object = mxt_get_object(data, type); | |
753 | if (!object || offset >= mxt_obj_size(object)) | |
754 | return -EINVAL; | |
755 | ||
756 | reg = object->start_address; | |
757 | return mxt_write_reg(data->client, reg + offset, val); | |
758 | } | |
759 | ||
5f3f9bc2 | 760 | static void mxt_input_button(struct mxt_data *data, u8 *message) |
22dfab7f DK |
761 | { |
762 | struct input_dev *input = data->input_dev; | |
22dfab7f DK |
763 | int i; |
764 | ||
96a938aa DT |
765 | for (i = 0; i < data->t19_num_keys; i++) { |
766 | if (data->t19_keymap[i] == KEY_RESERVED) | |
22dfab7f | 767 | continue; |
c37f6d38 DT |
768 | |
769 | /* Active-low switch */ | |
96a938aa | 770 | input_report_key(input, data->t19_keymap[i], |
c37f6d38 | 771 | !(message[1] & BIT(i))); |
22dfab7f DK |
772 | } |
773 | } | |
774 | ||
b735fbe0 | 775 | static void mxt_input_sync(struct mxt_data *data) |
eef820dc | 776 | { |
b735fbe0 | 777 | input_mt_report_pointer_emulation(data->input_dev, |
96a938aa | 778 | data->t19_num_keys); |
b735fbe0 | 779 | input_sync(data->input_dev); |
eef820dc ND |
780 | } |
781 | ||
b9b05a89 | 782 | static void mxt_proc_t9_message(struct mxt_data *data, u8 *message) |
4cf51c38 | 783 | { |
4cf51c38 | 784 | struct device *dev = &data->client->dev; |
fba5bc31 | 785 | struct input_dev *input_dev = data->input_dev; |
5f3f9bc2 ND |
786 | int id; |
787 | u8 status; | |
4cf51c38 JS |
788 | int x; |
789 | int y; | |
790 | int area; | |
fea9e467 | 791 | int amplitude; |
4cf51c38 | 792 | |
5f3f9bc2 ND |
793 | id = message[0] - data->T9_reportid_min; |
794 | status = message[1]; | |
795 | x = (message[2] << 4) | ((message[4] >> 4) & 0xf); | |
796 | y = (message[3] << 4) | ((message[4] & 0xf)); | |
eef820dc ND |
797 | |
798 | /* Handle 10/12 bit switching */ | |
910d8051 | 799 | if (data->max_x < 1024) |
eef820dc | 800 | x >>= 2; |
910d8051 | 801 | if (data->max_y < 1024) |
eef820dc | 802 | y >>= 2; |
910d8051 | 803 | |
5f3f9bc2 ND |
804 | area = message[5]; |
805 | amplitude = message[6]; | |
4cf51c38 | 806 | |
b2e459b8 DK |
807 | dev_dbg(dev, |
808 | "[%u] %c%c%c%c%c%c%c%c x: %5u y: %5u area: %3u amp: %3u\n", | |
809 | id, | |
f3889ed1 ND |
810 | (status & MXT_T9_DETECT) ? 'D' : '.', |
811 | (status & MXT_T9_PRESS) ? 'P' : '.', | |
812 | (status & MXT_T9_RELEASE) ? 'R' : '.', | |
813 | (status & MXT_T9_MOVE) ? 'M' : '.', | |
814 | (status & MXT_T9_VECTOR) ? 'V' : '.', | |
815 | (status & MXT_T9_AMP) ? 'A' : '.', | |
816 | (status & MXT_T9_SUPPRESS) ? 'S' : '.', | |
817 | (status & MXT_T9_UNGRIP) ? 'U' : '.', | |
fea9e467 | 818 | x, y, area, amplitude); |
b2e459b8 | 819 | |
fba5bc31 | 820 | input_mt_slot(input_dev, id); |
fba5bc31 | 821 | |
f3889ed1 | 822 | if (status & MXT_T9_DETECT) { |
eef820dc ND |
823 | /* |
824 | * Multiple bits may be set if the host is slow to read | |
825 | * the status messages, indicating all the events that | |
826 | * have happened. | |
827 | */ | |
828 | if (status & MXT_T9_RELEASE) { | |
5fc70e35 | 829 | input_mt_report_slot_inactive(input_dev); |
b735fbe0 | 830 | mxt_input_sync(data); |
eef820dc ND |
831 | } |
832 | ||
2ca3ba0a ND |
833 | /* if active, pressure must be non-zero */ |
834 | if (!amplitude) | |
835 | amplitude = MXT_PRESSURE_DEFAULT; | |
836 | ||
eef820dc ND |
837 | /* Touch active */ |
838 | input_mt_report_slot_state(input_dev, MT_TOOL_FINGER, 1); | |
fba5bc31 DK |
839 | input_report_abs(input_dev, ABS_MT_POSITION_X, x); |
840 | input_report_abs(input_dev, ABS_MT_POSITION_Y, y); | |
fea9e467 | 841 | input_report_abs(input_dev, ABS_MT_PRESSURE, amplitude); |
fba5bc31 | 842 | input_report_abs(input_dev, ABS_MT_TOUCH_MAJOR, area); |
eef820dc ND |
843 | } else { |
844 | /* Touch no longer active, close out slot */ | |
5fc70e35 | 845 | input_mt_report_slot_inactive(input_dev); |
fba5bc31 | 846 | } |
b9b05a89 ND |
847 | |
848 | data->update_input = true; | |
4cf51c38 | 849 | } |
4cf51c38 | 850 | |
b23157dc ND |
851 | static void mxt_proc_t100_message(struct mxt_data *data, u8 *message) |
852 | { | |
853 | struct device *dev = &data->client->dev; | |
854 | struct input_dev *input_dev = data->input_dev; | |
855 | int id; | |
856 | u8 status; | |
857 | u8 type = 0; | |
858 | u16 x; | |
859 | u16 y; | |
860 | int distance = 0; | |
861 | int tool = 0; | |
862 | u8 major = 0; | |
863 | u8 pressure = 0; | |
864 | u8 orientation = 0; | |
865 | ||
866 | id = message[0] - data->T100_reportid_min - 2; | |
867 | ||
868 | /* ignore SCRSTATUS events */ | |
869 | if (id < 0) | |
870 | return; | |
871 | ||
872 | status = message[1]; | |
873 | x = get_unaligned_le16(&message[2]); | |
874 | y = get_unaligned_le16(&message[4]); | |
875 | ||
876 | if (status & MXT_T100_DETECT) { | |
877 | type = (status & MXT_T100_TYPE_MASK) >> 4; | |
878 | ||
879 | switch (type) { | |
880 | case MXT_T100_TYPE_HOVERING_FINGER: | |
881 | tool = MT_TOOL_FINGER; | |
882 | distance = MXT_DISTANCE_HOVERING; | |
883 | ||
884 | if (data->t100_aux_vect) | |
885 | orientation = message[data->t100_aux_vect]; | |
886 | ||
887 | break; | |
888 | ||
889 | case MXT_T100_TYPE_FINGER: | |
890 | case MXT_T100_TYPE_GLOVE: | |
891 | tool = MT_TOOL_FINGER; | |
892 | distance = MXT_DISTANCE_ACTIVE_TOUCH; | |
893 | ||
894 | if (data->t100_aux_area) | |
895 | major = message[data->t100_aux_area]; | |
896 | ||
897 | if (data->t100_aux_ampl) | |
898 | pressure = message[data->t100_aux_ampl]; | |
899 | ||
900 | if (data->t100_aux_vect) | |
901 | orientation = message[data->t100_aux_vect]; | |
902 | ||
903 | break; | |
904 | ||
905 | case MXT_T100_TYPE_PASSIVE_STYLUS: | |
906 | tool = MT_TOOL_PEN; | |
907 | ||
908 | /* | |
909 | * Passive stylus is reported with size zero so | |
910 | * hardcode. | |
911 | */ | |
912 | major = MXT_TOUCH_MAJOR_DEFAULT; | |
913 | ||
914 | if (data->t100_aux_ampl) | |
915 | pressure = message[data->t100_aux_ampl]; | |
916 | ||
917 | break; | |
918 | ||
919 | case MXT_T100_TYPE_LARGE_TOUCH: | |
920 | /* Ignore suppressed touch */ | |
921 | break; | |
922 | ||
923 | default: | |
924 | dev_dbg(dev, "Unexpected T100 type\n"); | |
925 | return; | |
926 | } | |
927 | } | |
928 | ||
929 | /* | |
930 | * Values reported should be non-zero if tool is touching the | |
931 | * device | |
932 | */ | |
933 | if (!pressure && type != MXT_T100_TYPE_HOVERING_FINGER) | |
934 | pressure = MXT_PRESSURE_DEFAULT; | |
935 | ||
936 | input_mt_slot(input_dev, id); | |
937 | ||
938 | if (status & MXT_T100_DETECT) { | |
939 | dev_dbg(dev, "[%u] type:%u x:%u y:%u a:%02X p:%02X v:%02X\n", | |
940 | id, type, x, y, major, pressure, orientation); | |
941 | ||
942 | input_mt_report_slot_state(input_dev, tool, 1); | |
943 | input_report_abs(input_dev, ABS_MT_POSITION_X, x); | |
944 | input_report_abs(input_dev, ABS_MT_POSITION_Y, y); | |
945 | input_report_abs(input_dev, ABS_MT_TOUCH_MAJOR, major); | |
946 | input_report_abs(input_dev, ABS_MT_PRESSURE, pressure); | |
947 | input_report_abs(input_dev, ABS_MT_DISTANCE, distance); | |
948 | input_report_abs(input_dev, ABS_MT_ORIENTATION, orientation); | |
949 | } else { | |
950 | dev_dbg(dev, "[%u] release\n", id); | |
951 | ||
952 | /* close out slot */ | |
5fc70e35 | 953 | input_mt_report_slot_inactive(input_dev); |
b23157dc ND |
954 | } |
955 | ||
956 | data->update_input = true; | |
957 | } | |
958 | ||
b9b05a89 | 959 | static int mxt_proc_message(struct mxt_data *data, u8 *message) |
04a79181 | 960 | { |
b9b05a89 ND |
961 | u8 report_id = message[0]; |
962 | ||
963 | if (report_id == MXT_RPTID_NOMSG) | |
964 | return 0; | |
965 | ||
966 | if (report_id == data->T6_reportid) { | |
967 | mxt_proc_t6_messages(data, message); | |
968 | } else if (!data->input_dev) { | |
969 | /* | |
970 | * Do not report events if input device | |
971 | * is not yet registered. | |
972 | */ | |
973 | mxt_dump_message(data, message); | |
b23157dc ND |
974 | } else if (report_id >= data->T9_reportid_min && |
975 | report_id <= data->T9_reportid_max) { | |
b9b05a89 | 976 | mxt_proc_t9_message(data, message); |
b23157dc ND |
977 | } else if (report_id >= data->T100_reportid_min && |
978 | report_id <= data->T100_reportid_max) { | |
979 | mxt_proc_t100_message(data, message); | |
b9b05a89 ND |
980 | } else if (report_id == data->T19_reportid) { |
981 | mxt_input_button(data, message); | |
982 | data->update_input = true; | |
983 | } else { | |
984 | mxt_dump_message(data, message); | |
985 | } | |
986 | ||
987 | return 1; | |
4cf51c38 JS |
988 | } |
989 | ||
9d8dc3e5 | 990 | static int mxt_read_and_process_messages(struct mxt_data *data, u8 count) |
4cf51c38 | 991 | { |
4cf51c38 | 992 | struct device *dev = &data->client->dev; |
b9b05a89 | 993 | int ret; |
9d8dc3e5 ND |
994 | int i; |
995 | u8 num_valid = 0; | |
996 | ||
997 | /* Safety check for msg_buf */ | |
998 | if (count > data->max_reportid) | |
999 | return -EINVAL; | |
4cf51c38 | 1000 | |
9d8dc3e5 | 1001 | /* Process remaining messages if necessary */ |
b9b05a89 | 1002 | ret = __mxt_read_reg(data->client, data->T5_address, |
9d8dc3e5 | 1003 | data->T5_msg_size * count, data->msg_buf); |
b9b05a89 | 1004 | if (ret) { |
9d8dc3e5 | 1005 | dev_err(dev, "Failed to read %u messages (%d)\n", count, ret); |
b9b05a89 ND |
1006 | return ret; |
1007 | } | |
4cf51c38 | 1008 | |
9d8dc3e5 ND |
1009 | for (i = 0; i < count; i++) { |
1010 | ret = mxt_proc_message(data, | |
1011 | data->msg_buf + data->T5_msg_size * i); | |
1012 | ||
1013 | if (ret == 1) | |
1014 | num_valid++; | |
1015 | } | |
1016 | ||
1017 | /* return number of messages read */ | |
1018 | return num_valid; | |
b9b05a89 | 1019 | } |
4cf51c38 | 1020 | |
9d8dc3e5 | 1021 | static irqreturn_t mxt_process_messages_t44(struct mxt_data *data) |
b9b05a89 | 1022 | { |
9d8dc3e5 | 1023 | struct device *dev = &data->client->dev; |
b9b05a89 | 1024 | int ret; |
9d8dc3e5 | 1025 | u8 count, num_left; |
4cf51c38 | 1026 | |
9d8dc3e5 ND |
1027 | /* Read T44 and T5 together */ |
1028 | ret = __mxt_read_reg(data->client, data->T44_address, | |
1029 | data->T5_msg_size + 1, data->msg_buf); | |
1030 | if (ret) { | |
1031 | dev_err(dev, "Failed to read T44 and T5 (%d)\n", ret); | |
1032 | return IRQ_NONE; | |
1033 | } | |
1034 | ||
1035 | count = data->msg_buf[0]; | |
1036 | ||
507584e2 ND |
1037 | /* |
1038 | * This condition may be caused by the CHG line being configured in | |
1039 | * Mode 0. It results in unnecessary I2C operations but it is benign. | |
1040 | */ | |
1041 | if (count == 0) | |
9d8dc3e5 | 1042 | return IRQ_NONE; |
507584e2 ND |
1043 | |
1044 | if (count > data->max_reportid) { | |
1045 | dev_warn(dev, "T44 count %d exceeded max report id\n", count); | |
9d8dc3e5 ND |
1046 | count = data->max_reportid; |
1047 | } | |
1048 | ||
1049 | /* Process first message */ | |
1050 | ret = mxt_proc_message(data, data->msg_buf + 1); | |
1051 | if (ret < 0) { | |
1052 | dev_warn(dev, "Unexpected invalid message\n"); | |
1053 | return IRQ_NONE; | |
1054 | } | |
1055 | ||
1056 | num_left = count - 1; | |
1057 | ||
1058 | /* Process remaining messages if necessary */ | |
1059 | if (num_left) { | |
1060 | ret = mxt_read_and_process_messages(data, num_left); | |
b9b05a89 | 1061 | if (ret < 0) |
9d8dc3e5 ND |
1062 | goto end; |
1063 | else if (ret != num_left) | |
1064 | dev_warn(dev, "Unexpected invalid message\n"); | |
1065 | } | |
1066 | ||
1067 | end: | |
1068 | if (data->update_input) { | |
1069 | mxt_input_sync(data); | |
1070 | data->update_input = false; | |
1071 | } | |
1072 | ||
1073 | return IRQ_HANDLED; | |
1074 | } | |
1075 | ||
1076 | static int mxt_process_messages_until_invalid(struct mxt_data *data) | |
1077 | { | |
1078 | struct device *dev = &data->client->dev; | |
1079 | int count, read; | |
1080 | u8 tries = 2; | |
1081 | ||
1082 | count = data->max_reportid; | |
1083 | ||
1084 | /* Read messages until we force an invalid */ | |
1085 | do { | |
1086 | read = mxt_read_and_process_messages(data, count); | |
1087 | if (read < count) | |
1088 | return 0; | |
1089 | } while (--tries); | |
1090 | ||
1091 | if (data->update_input) { | |
1092 | mxt_input_sync(data); | |
1093 | data->update_input = false; | |
1094 | } | |
1095 | ||
1096 | dev_err(dev, "CHG pin isn't cleared\n"); | |
1097 | return -EBUSY; | |
1098 | } | |
1099 | ||
1100 | static irqreturn_t mxt_process_messages(struct mxt_data *data) | |
1101 | { | |
1102 | int total_handled, num_handled; | |
1103 | u8 count = data->last_message_count; | |
1104 | ||
1105 | if (count < 1 || count > data->max_reportid) | |
1106 | count = 1; | |
1107 | ||
1108 | /* include final invalid message */ | |
1109 | total_handled = mxt_read_and_process_messages(data, count + 1); | |
1110 | if (total_handled < 0) | |
1111 | return IRQ_NONE; | |
1112 | /* if there were invalid messages, then we are done */ | |
1113 | else if (total_handled <= count) | |
1114 | goto update_count; | |
1115 | ||
1116 | /* keep reading two msgs until one is invalid or reportid limit */ | |
1117 | do { | |
1118 | num_handled = mxt_read_and_process_messages(data, 2); | |
1119 | if (num_handled < 0) | |
b9b05a89 | 1120 | return IRQ_NONE; |
9d8dc3e5 ND |
1121 | |
1122 | total_handled += num_handled; | |
1123 | ||
1124 | if (num_handled < 2) | |
1125 | break; | |
1126 | } while (total_handled < data->num_touchids); | |
1127 | ||
1128 | update_count: | |
1129 | data->last_message_count = total_handled; | |
b9b05a89 ND |
1130 | |
1131 | if (data->update_input) { | |
b735fbe0 | 1132 | mxt_input_sync(data); |
b9b05a89 ND |
1133 | data->update_input = false; |
1134 | } | |
64464ae8 | 1135 | |
4cf51c38 JS |
1136 | return IRQ_HANDLED; |
1137 | } | |
1138 | ||
d79e7e47 BL |
1139 | static irqreturn_t mxt_interrupt(int irq, void *dev_id) |
1140 | { | |
1141 | struct mxt_data *data = dev_id; | |
1142 | ||
1143 | if (data->in_bootloader) { | |
1144 | /* bootloader state transition completion */ | |
1145 | complete(&data->bl_completion); | |
1146 | return IRQ_HANDLED; | |
1147 | } | |
1148 | ||
dd24dcf5 ND |
1149 | if (!data->object_table) |
1150 | return IRQ_HANDLED; | |
1151 | ||
9d8dc3e5 ND |
1152 | if (data->T44_address) { |
1153 | return mxt_process_messages_t44(data); | |
1154 | } else { | |
1155 | return mxt_process_messages(data); | |
1156 | } | |
d79e7e47 BL |
1157 | } |
1158 | ||
a4a2ef46 IV |
1159 | static int mxt_t6_command(struct mxt_data *data, u16 cmd_offset, |
1160 | u8 value, bool wait) | |
1161 | { | |
1162 | u16 reg; | |
1163 | u8 command_register; | |
1164 | int timeout_counter = 0; | |
1165 | int ret; | |
1166 | ||
1167 | reg = data->T6_address + cmd_offset; | |
1168 | ||
1169 | ret = mxt_write_reg(data->client, reg, value); | |
1170 | if (ret) | |
1171 | return ret; | |
1172 | ||
1173 | if (!wait) | |
1174 | return 0; | |
1175 | ||
1176 | do { | |
1177 | msleep(20); | |
1178 | ret = __mxt_read_reg(data->client, reg, 1, &command_register); | |
1179 | if (ret) | |
1180 | return ret; | |
1181 | } while (command_register != 0 && timeout_counter++ <= 100); | |
1182 | ||
1183 | if (timeout_counter > 100) { | |
1184 | dev_err(&data->client->dev, "Command failed!\n"); | |
1185 | return -EIO; | |
1186 | } | |
1187 | ||
1188 | return 0; | |
1189 | } | |
1190 | ||
eb43335c ND |
1191 | static int mxt_acquire_irq(struct mxt_data *data) |
1192 | { | |
1193 | int error; | |
1194 | ||
1195 | enable_irq(data->irq); | |
1196 | ||
74d905d2 ND |
1197 | if (data->use_retrigen_workaround) { |
1198 | error = mxt_process_messages_until_invalid(data); | |
1199 | if (error) | |
1200 | return error; | |
1201 | } | |
eb43335c ND |
1202 | |
1203 | return 0; | |
1204 | } | |
1205 | ||
a4a2ef46 IV |
1206 | static int mxt_soft_reset(struct mxt_data *data) |
1207 | { | |
1208 | struct device *dev = &data->client->dev; | |
1209 | int ret = 0; | |
1210 | ||
885f3fb9 ND |
1211 | dev_info(dev, "Resetting device\n"); |
1212 | ||
1213 | disable_irq(data->irq); | |
a4a2ef46 IV |
1214 | |
1215 | reinit_completion(&data->reset_completion); | |
1216 | ||
1217 | ret = mxt_t6_command(data, MXT_COMMAND_RESET, MXT_RESET_VALUE, false); | |
1218 | if (ret) | |
1219 | return ret; | |
1220 | ||
885f3fb9 | 1221 | /* Ignore CHG line for 100ms after reset */ |
ca1cd36c | 1222 | msleep(MXT_RESET_INVALID_CHG); |
885f3fb9 | 1223 | |
eb43335c | 1224 | mxt_acquire_irq(data); |
885f3fb9 | 1225 | |
a4a2ef46 IV |
1226 | ret = mxt_wait_for_completion(data, &data->reset_completion, |
1227 | MXT_RESET_TIMEOUT); | |
1228 | if (ret) | |
1229 | return ret; | |
1230 | ||
1231 | return 0; | |
1232 | } | |
1233 | ||
c3f78043 ND |
1234 | static void mxt_update_crc(struct mxt_data *data, u8 cmd, u8 value) |
1235 | { | |
1236 | /* | |
1237 | * On failure, CRC is set to 0 and config will always be | |
1238 | * downloaded. | |
1239 | */ | |
1240 | data->config_crc = 0; | |
1241 | reinit_completion(&data->crc_completion); | |
1242 | ||
1243 | mxt_t6_command(data, cmd, value, true); | |
1244 | ||
1245 | /* | |
1246 | * Wait for crc message. On failure, CRC is set to 0 and config will | |
1247 | * always be downloaded. | |
1248 | */ | |
1249 | mxt_wait_for_completion(data, &data->crc_completion, MXT_CRC_TIMEOUT); | |
1250 | } | |
1251 | ||
4ce6fa01 ND |
1252 | static void mxt_calc_crc24(u32 *crc, u8 firstbyte, u8 secondbyte) |
1253 | { | |
1254 | static const unsigned int crcpoly = 0x80001B; | |
1255 | u32 result; | |
1256 | u32 data_word; | |
1257 | ||
1258 | data_word = (secondbyte << 8) | firstbyte; | |
1259 | result = ((*crc << 1) ^ data_word); | |
1260 | ||
1261 | if (result & 0x1000000) | |
1262 | result ^= crcpoly; | |
1263 | ||
1264 | *crc = result; | |
1265 | } | |
1266 | ||
1267 | static u32 mxt_calculate_crc(u8 *base, off_t start_off, off_t end_off) | |
1268 | { | |
1269 | u32 crc = 0; | |
1270 | u8 *ptr = base + start_off; | |
1271 | u8 *last_val = base + end_off - 1; | |
1272 | ||
1273 | if (end_off < start_off) | |
1274 | return -EINVAL; | |
1275 | ||
1276 | while (ptr < last_val) { | |
1277 | mxt_calc_crc24(&crc, *ptr, *(ptr + 1)); | |
1278 | ptr += 2; | |
1279 | } | |
1280 | ||
1281 | /* if len is odd, fill the last byte with 0 */ | |
1282 | if (ptr == last_val) | |
1283 | mxt_calc_crc24(&crc, *ptr, 0); | |
1284 | ||
1285 | /* Mask to 24-bit */ | |
1286 | crc &= 0x00FFFFFF; | |
1287 | ||
1288 | return crc; | |
1289 | } | |
1290 | ||
74d905d2 ND |
1291 | static int mxt_check_retrigen(struct mxt_data *data) |
1292 | { | |
1293 | struct i2c_client *client = data->client; | |
1294 | int error; | |
1295 | int val; | |
1296 | struct irq_data *irqd; | |
1297 | ||
1298 | data->use_retrigen_workaround = false; | |
1299 | ||
1300 | irqd = irq_get_irq_data(data->irq); | |
1301 | if (!irqd) | |
1302 | return -EINVAL; | |
1303 | ||
1304 | if (irqd_is_level_type(irqd)) | |
1305 | return 0; | |
1306 | ||
1307 | if (data->T18_address) { | |
1308 | error = __mxt_read_reg(client, | |
1309 | data->T18_address + MXT_COMMS_CTRL, | |
1310 | 1, &val); | |
1311 | if (error) | |
1312 | return error; | |
1313 | ||
1314 | if (val & MXT_COMMS_RETRIGEN) | |
1315 | return 0; | |
1316 | } | |
1317 | ||
1318 | dev_warn(&client->dev, "Enabling RETRIGEN workaround\n"); | |
1319 | data->use_retrigen_workaround = true; | |
1320 | return 0; | |
1321 | } | |
1322 | ||
f865df73 | 1323 | static int mxt_prepare_cfg_mem(struct mxt_data *data, struct mxt_cfg *cfg) |
efdbd7ae DT |
1324 | { |
1325 | struct device *dev = &data->client->dev; | |
1326 | struct mxt_object *object; | |
1327 | unsigned int type, instance, size, byte_offset; | |
1328 | int offset; | |
1329 | int ret; | |
1330 | int i; | |
1331 | u16 reg; | |
1332 | u8 val; | |
1333 | ||
f865df73 | 1334 | while (cfg->raw_pos < cfg->raw_size) { |
efdbd7ae | 1335 | /* Read type, instance, length */ |
f865df73 | 1336 | ret = sscanf(cfg->raw + cfg->raw_pos, "%x %x %x%n", |
efdbd7ae DT |
1337 | &type, &instance, &size, &offset); |
1338 | if (ret == 0) { | |
1339 | /* EOF */ | |
1340 | break; | |
1341 | } else if (ret != 3) { | |
1342 | dev_err(dev, "Bad format: failed to parse object\n"); | |
1343 | return -EINVAL; | |
1344 | } | |
f865df73 | 1345 | cfg->raw_pos += offset; |
efdbd7ae DT |
1346 | |
1347 | object = mxt_get_object(data, type); | |
1348 | if (!object) { | |
1349 | /* Skip object */ | |
1350 | for (i = 0; i < size; i++) { | |
f865df73 | 1351 | ret = sscanf(cfg->raw + cfg->raw_pos, "%hhx%n", |
041fa159 DT |
1352 | &val, &offset); |
1353 | if (ret != 1) { | |
1354 | dev_err(dev, "Bad format in T%d at %d\n", | |
1355 | type, i); | |
1356 | return -EINVAL; | |
1357 | } | |
f865df73 | 1358 | cfg->raw_pos += offset; |
efdbd7ae DT |
1359 | } |
1360 | continue; | |
1361 | } | |
1362 | ||
1363 | if (size > mxt_obj_size(object)) { | |
1364 | /* | |
1365 | * Either we are in fallback mode due to wrong | |
1366 | * config or config from a later fw version, | |
1367 | * or the file is corrupt or hand-edited. | |
1368 | */ | |
1369 | dev_warn(dev, "Discarding %zu byte(s) in T%u\n", | |
1370 | size - mxt_obj_size(object), type); | |
1371 | } else if (mxt_obj_size(object) > size) { | |
1372 | /* | |
1373 | * If firmware is upgraded, new bytes may be added to | |
1374 | * end of objects. It is generally forward compatible | |
1375 | * to zero these bytes - previous behaviour will be | |
1376 | * retained. However this does invalidate the CRC and | |
1377 | * will force fallback mode until the configuration is | |
1378 | * updated. We warn here but do nothing else - the | |
1379 | * malloc has zeroed the entire configuration. | |
1380 | */ | |
1381 | dev_warn(dev, "Zeroing %zu byte(s) in T%d\n", | |
1382 | mxt_obj_size(object) - size, type); | |
1383 | } | |
1384 | ||
1385 | if (instance >= mxt_obj_instances(object)) { | |
1386 | dev_err(dev, "Object instances exceeded!\n"); | |
1387 | return -EINVAL; | |
1388 | } | |
1389 | ||
1390 | reg = object->start_address + mxt_obj_size(object) * instance; | |
1391 | ||
1392 | for (i = 0; i < size; i++) { | |
f865df73 | 1393 | ret = sscanf(cfg->raw + cfg->raw_pos, "%hhx%n", |
efdbd7ae DT |
1394 | &val, |
1395 | &offset); | |
1396 | if (ret != 1) { | |
041fa159 DT |
1397 | dev_err(dev, "Bad format in T%d at %d\n", |
1398 | type, i); | |
efdbd7ae DT |
1399 | return -EINVAL; |
1400 | } | |
f865df73 | 1401 | cfg->raw_pos += offset; |
efdbd7ae DT |
1402 | |
1403 | if (i > mxt_obj_size(object)) | |
1404 | continue; | |
1405 | ||
f865df73 | 1406 | byte_offset = reg + i - cfg->start_ofs; |
efdbd7ae | 1407 | |
f865df73 ND |
1408 | if (byte_offset >= 0 && byte_offset < cfg->mem_size) { |
1409 | *(cfg->mem + byte_offset) = val; | |
efdbd7ae DT |
1410 | } else { |
1411 | dev_err(dev, "Bad object: reg:%d, T%d, ofs=%d\n", | |
1412 | reg, object->type, byte_offset); | |
1413 | return -EINVAL; | |
1414 | } | |
1415 | } | |
1416 | } | |
1417 | ||
1418 | return 0; | |
1419 | } | |
1420 | ||
f865df73 | 1421 | static int mxt_upload_cfg_mem(struct mxt_data *data, struct mxt_cfg *cfg) |
efdbd7ae DT |
1422 | { |
1423 | unsigned int byte_offset = 0; | |
1424 | int error; | |
1425 | ||
1426 | /* Write configuration as blocks */ | |
f865df73 ND |
1427 | while (byte_offset < cfg->mem_size) { |
1428 | unsigned int size = cfg->mem_size - byte_offset; | |
efdbd7ae DT |
1429 | |
1430 | if (size > MXT_MAX_BLOCK_WRITE) | |
1431 | size = MXT_MAX_BLOCK_WRITE; | |
1432 | ||
1433 | error = __mxt_write_reg(data->client, | |
f865df73 ND |
1434 | cfg->start_ofs + byte_offset, |
1435 | size, cfg->mem + byte_offset); | |
efdbd7ae DT |
1436 | if (error) { |
1437 | dev_err(&data->client->dev, | |
1438 | "Config write error, ret=%d\n", error); | |
1439 | return error; | |
1440 | } | |
1441 | ||
1442 | byte_offset += size; | |
1443 | } | |
1444 | ||
1445 | return 0; | |
1446 | } | |
1447 | ||
7f3884f7 ND |
1448 | static int mxt_init_t7_power_cfg(struct mxt_data *data); |
1449 | ||
50a77c65 ND |
1450 | /* |
1451 | * mxt_update_cfg - download configuration to chip | |
1452 | * | |
1453 | * Atmel Raw Config File Format | |
1454 | * | |
1455 | * The first four lines of the raw config file contain: | |
1456 | * 1) Version | |
1457 | * 2) Chip ID Information (first 7 bytes of device memory) | |
1458 | * 3) Chip Information Block 24-bit CRC Checksum | |
1459 | * 4) Chip Configuration 24-bit CRC Checksum | |
1460 | * | |
1461 | * The rest of the file consists of one line per object instance: | |
1462 | * <TYPE> <INSTANCE> <SIZE> <CONTENTS> | |
1463 | * | |
1464 | * <TYPE> - 2-byte object type as hex | |
1465 | * <INSTANCE> - 2-byte object instance number as hex | |
1466 | * <SIZE> - 2-byte object size as hex | |
1467 | * <CONTENTS> - array of <SIZE> 1-byte hex values | |
1468 | */ | |
f865df73 | 1469 | static int mxt_update_cfg(struct mxt_data *data, const struct firmware *fw) |
4cf51c38 | 1470 | { |
4cf51c38 | 1471 | struct device *dev = &data->client->dev; |
f865df73 | 1472 | struct mxt_cfg cfg; |
cf94bc09 | 1473 | int ret; |
50a77c65 | 1474 | int offset; |
50a77c65 | 1475 | int i; |
4ce6fa01 | 1476 | u32 info_crc, config_crc, calculated_crc; |
15082bdb | 1477 | u16 crc_start = 0; |
4cf51c38 | 1478 | |
a4891f10 ND |
1479 | /* Make zero terminated copy of the OBP_RAW file */ |
1480 | cfg.raw = kmemdup_nul(fw->data, fw->size, GFP_KERNEL); | |
1481 | if (!cfg.raw) | |
1482 | return -ENOMEM; | |
1483 | ||
f865df73 ND |
1484 | cfg.raw_size = fw->size; |
1485 | ||
50a77c65 ND |
1486 | mxt_update_crc(data, MXT_COMMAND_REPORTALL, 1); |
1487 | ||
f865df73 | 1488 | if (strncmp(cfg.raw, MXT_CFG_MAGIC, strlen(MXT_CFG_MAGIC))) { |
50a77c65 | 1489 | dev_err(dev, "Unrecognised config file\n"); |
a4891f10 ND |
1490 | ret = -EINVAL; |
1491 | goto release_raw; | |
4cf51c38 JS |
1492 | } |
1493 | ||
f865df73 | 1494 | cfg.raw_pos = strlen(MXT_CFG_MAGIC); |
50a77c65 ND |
1495 | |
1496 | /* Load information block and check */ | |
1497 | for (i = 0; i < sizeof(struct mxt_info); i++) { | |
f865df73 ND |
1498 | ret = sscanf(cfg.raw + cfg.raw_pos, "%hhx%n", |
1499 | (unsigned char *)&cfg.info + i, | |
50a77c65 ND |
1500 | &offset); |
1501 | if (ret != 1) { | |
1502 | dev_err(dev, "Bad format\n"); | |
a4891f10 ND |
1503 | ret = -EINVAL; |
1504 | goto release_raw; | |
50a77c65 | 1505 | } |
c3f78043 | 1506 | |
f865df73 | 1507 | cfg.raw_pos += offset; |
c3f78043 ND |
1508 | } |
1509 | ||
f865df73 | 1510 | if (cfg.info.family_id != data->info->family_id) { |
50a77c65 | 1511 | dev_err(dev, "Family ID mismatch!\n"); |
a4891f10 ND |
1512 | ret = -EINVAL; |
1513 | goto release_raw; | |
50a77c65 | 1514 | } |
c3f78043 | 1515 | |
f865df73 | 1516 | if (cfg.info.variant_id != data->info->variant_id) { |
50a77c65 | 1517 | dev_err(dev, "Variant ID mismatch!\n"); |
a4891f10 ND |
1518 | ret = -EINVAL; |
1519 | goto release_raw; | |
50a77c65 | 1520 | } |
4cf51c38 | 1521 | |
4ce6fa01 | 1522 | /* Read CRCs */ |
f865df73 | 1523 | ret = sscanf(cfg.raw + cfg.raw_pos, "%x%n", &info_crc, &offset); |
50a77c65 ND |
1524 | if (ret != 1) { |
1525 | dev_err(dev, "Bad format: failed to parse Info CRC\n"); | |
a4891f10 ND |
1526 | ret = -EINVAL; |
1527 | goto release_raw; | |
50a77c65 | 1528 | } |
f865df73 | 1529 | cfg.raw_pos += offset; |
50a77c65 | 1530 | |
f865df73 | 1531 | ret = sscanf(cfg.raw + cfg.raw_pos, "%x%n", &config_crc, &offset); |
50a77c65 ND |
1532 | if (ret != 1) { |
1533 | dev_err(dev, "Bad format: failed to parse Config CRC\n"); | |
a4891f10 ND |
1534 | ret = -EINVAL; |
1535 | goto release_raw; | |
50a77c65 | 1536 | } |
f865df73 | 1537 | cfg.raw_pos += offset; |
50a77c65 | 1538 | |
4ce6fa01 ND |
1539 | /* |
1540 | * The Info Block CRC is calculated over mxt_info and the object | |
1541 | * table. If it does not match then we are trying to load the | |
1542 | * configuration from a different chip or firmware version, so | |
1543 | * the configuration CRC is invalid anyway. | |
1544 | */ | |
1545 | if (info_crc == data->info_crc) { | |
1546 | if (config_crc == 0 || data->config_crc == 0) { | |
1547 | dev_info(dev, "CRC zero, attempting to apply config\n"); | |
1548 | } else if (config_crc == data->config_crc) { | |
1549 | dev_dbg(dev, "Config CRC 0x%06X: OK\n", | |
1550 | data->config_crc); | |
f0dd6878 IR |
1551 | ret = 0; |
1552 | goto release_raw; | |
4ce6fa01 ND |
1553 | } else { |
1554 | dev_info(dev, "Config CRC 0x%06X: does not match file 0x%06X\n", | |
1555 | data->config_crc, config_crc); | |
1556 | } | |
1557 | } else { | |
1558 | dev_warn(dev, | |
1559 | "Warning: Info CRC error - device=0x%06X file=0x%06X\n", | |
1560 | data->info_crc, info_crc); | |
50a77c65 ND |
1561 | } |
1562 | ||
4ce6fa01 | 1563 | /* Malloc memory to store configuration */ |
f865df73 | 1564 | cfg.start_ofs = MXT_OBJECT_START + |
068bdb67 | 1565 | data->info->object_num * sizeof(struct mxt_object) + |
4ce6fa01 | 1566 | MXT_INFO_CHECKSUM_SIZE; |
f865df73 ND |
1567 | cfg.mem_size = data->mem_size - cfg.start_ofs; |
1568 | cfg.mem = kzalloc(cfg.mem_size, GFP_KERNEL); | |
a4891f10 ND |
1569 | if (!cfg.mem) { |
1570 | ret = -ENOMEM; | |
1571 | goto release_raw; | |
1572 | } | |
50a77c65 | 1573 | |
f865df73 | 1574 | ret = mxt_prepare_cfg_mem(data, &cfg); |
efdbd7ae DT |
1575 | if (ret) |
1576 | goto release_mem; | |
50a77c65 | 1577 | |
4ce6fa01 | 1578 | /* Calculate crc of the received configs (not the raw config file) */ |
15082bdb ND |
1579 | if (data->T71_address) |
1580 | crc_start = data->T71_address; | |
1581 | else if (data->T7_address) | |
1582 | crc_start = data->T7_address; | |
1583 | else | |
1584 | dev_warn(dev, "Could not find CRC start\n"); | |
1585 | ||
f865df73 ND |
1586 | if (crc_start > cfg.start_ofs) { |
1587 | calculated_crc = mxt_calculate_crc(cfg.mem, | |
1588 | crc_start - cfg.start_ofs, | |
1589 | cfg.mem_size); | |
15082bdb ND |
1590 | |
1591 | if (config_crc > 0 && config_crc != calculated_crc) | |
1592 | dev_warn(dev, "Config CRC in file inconsistent, calculated=%06X, file=%06X\n", | |
1593 | calculated_crc, config_crc); | |
4ce6fa01 | 1594 | } |
50a77c65 | 1595 | |
f865df73 | 1596 | ret = mxt_upload_cfg_mem(data, &cfg); |
efdbd7ae DT |
1597 | if (ret) |
1598 | goto release_mem; | |
4cf51c38 | 1599 | |
c3f78043 ND |
1600 | mxt_update_crc(data, MXT_COMMAND_BACKUPNV, MXT_BACKUP_VALUE); |
1601 | ||
74d905d2 ND |
1602 | ret = mxt_check_retrigen(data); |
1603 | if (ret) | |
1604 | goto release_mem; | |
1605 | ||
c3f78043 ND |
1606 | ret = mxt_soft_reset(data); |
1607 | if (ret) | |
4ce6fa01 | 1608 | goto release_mem; |
c3f78043 ND |
1609 | |
1610 | dev_info(dev, "Config successfully updated\n"); | |
1611 | ||
7f3884f7 ND |
1612 | /* T7 config may have changed */ |
1613 | mxt_init_t7_power_cfg(data); | |
1614 | ||
4ce6fa01 | 1615 | release_mem: |
f865df73 | 1616 | kfree(cfg.mem); |
1e3c336a SC |
1617 | release_raw: |
1618 | kfree(cfg.raw); | |
50a77c65 | 1619 | return ret; |
4cf51c38 JS |
1620 | } |
1621 | ||
58e4aeee | 1622 | static void mxt_free_input_device(struct mxt_data *data) |
5f3f9bc2 | 1623 | { |
58e4aeee SW |
1624 | if (data->input_dev) { |
1625 | input_unregister_device(data->input_dev); | |
1626 | data->input_dev = NULL; | |
1627 | } | |
1628 | } | |
5f3f9bc2 | 1629 | |
58e4aeee SW |
1630 | static void mxt_free_object_table(struct mxt_data *data) |
1631 | { | |
ecfdd7e2 ND |
1632 | #ifdef CONFIG_TOUCHSCREEN_ATMEL_MXT_T37 |
1633 | video_unregister_device(&data->dbg.vdev); | |
1634 | v4l2_device_unregister(&data->dbg.v4l2); | |
1635 | #endif | |
5f3f9bc2 | 1636 | data->object_table = NULL; |
068bdb67 ND |
1637 | data->info = NULL; |
1638 | kfree(data->raw_info_block); | |
1639 | data->raw_info_block = NULL; | |
5f3f9bc2 ND |
1640 | kfree(data->msg_buf); |
1641 | data->msg_buf = NULL; | |
b9b05a89 | 1642 | data->T5_address = 0; |
5f3f9bc2 ND |
1643 | data->T5_msg_size = 0; |
1644 | data->T6_reportid = 0; | |
1645 | data->T7_address = 0; | |
15082bdb | 1646 | data->T71_address = 0; |
5f3f9bc2 ND |
1647 | data->T9_reportid_min = 0; |
1648 | data->T9_reportid_max = 0; | |
74d905d2 | 1649 | data->T18_address = 0; |
5f3f9bc2 | 1650 | data->T19_reportid = 0; |
9d8dc3e5 | 1651 | data->T44_address = 0; |
b23157dc ND |
1652 | data->T100_reportid_min = 0; |
1653 | data->T100_reportid_max = 0; | |
9d8dc3e5 | 1654 | data->max_reportid = 0; |
5f3f9bc2 ND |
1655 | } |
1656 | ||
068bdb67 ND |
1657 | static int mxt_parse_object_table(struct mxt_data *data, |
1658 | struct mxt_object *object_table) | |
4cf51c38 | 1659 | { |
333e5a9a | 1660 | struct i2c_client *client = data->client; |
4cf51c38 | 1661 | int i; |
333e5a9a | 1662 | u8 reportid; |
4ce6fa01 | 1663 | u16 end_address; |
333e5a9a | 1664 | |
333e5a9a DK |
1665 | /* Valid Report IDs start counting from 1 */ |
1666 | reportid = 1; | |
4ce6fa01 | 1667 | data->mem_size = 0; |
068bdb67 | 1668 | for (i = 0; i < data->info->object_num; i++) { |
dd24dcf5 | 1669 | struct mxt_object *object = object_table + i; |
333e5a9a | 1670 | u8 min_id, max_id; |
4cf51c38 | 1671 | |
333e5a9a | 1672 | le16_to_cpus(&object->start_address); |
4cf51c38 JS |
1673 | |
1674 | if (object->num_report_ids) { | |
333e5a9a | 1675 | min_id = reportid; |
4cf51c38 | 1676 | reportid += object->num_report_ids * |
1e0c0c5b | 1677 | mxt_obj_instances(object); |
333e5a9a DK |
1678 | max_id = reportid - 1; |
1679 | } else { | |
1680 | min_id = 0; | |
1681 | max_id = 0; | |
1682 | } | |
1683 | ||
1684 | dev_dbg(&data->client->dev, | |
7bed6805 | 1685 | "T%u Start:%u Size:%zu Instances:%zu Report IDs:%u-%u\n", |
1e0c0c5b DK |
1686 | object->type, object->start_address, |
1687 | mxt_obj_size(object), mxt_obj_instances(object), | |
1688 | min_id, max_id); | |
333e5a9a DK |
1689 | |
1690 | switch (object->type) { | |
5f3f9bc2 | 1691 | case MXT_GEN_MESSAGE_T5: |
068bdb67 ND |
1692 | if (data->info->family_id == 0x80 && |
1693 | data->info->version < 0x20) { | |
9d8dc3e5 | 1694 | /* |
437d4f37 ND |
1695 | * On mXT224 firmware versions prior to V2.0 |
1696 | * read and discard unused CRC byte otherwise | |
1697 | * DMA reads are misaligned. | |
9d8dc3e5 ND |
1698 | */ |
1699 | data->T5_msg_size = mxt_obj_size(object); | |
1700 | } else { | |
1701 | /* CRC not enabled, so skip last byte */ | |
1702 | data->T5_msg_size = mxt_obj_size(object) - 1; | |
1703 | } | |
b9b05a89 | 1704 | data->T5_address = object->start_address; |
041fa159 | 1705 | break; |
fdf80421 DK |
1706 | case MXT_GEN_COMMAND_T6: |
1707 | data->T6_reportid = min_id; | |
a4a2ef46 | 1708 | data->T6_address = object->start_address; |
fdf80421 | 1709 | break; |
4ce6fa01 ND |
1710 | case MXT_GEN_POWER_T7: |
1711 | data->T7_address = object->start_address; | |
1712 | break; | |
15082bdb ND |
1713 | case MXT_SPT_DYNAMICCONFIGURATIONCONTAINER_T71: |
1714 | data->T71_address = object->start_address; | |
1715 | break; | |
333e5a9a | 1716 | case MXT_TOUCH_MULTI_T9: |
b23157dc | 1717 | data->multitouch = MXT_TOUCH_MULTI_T9; |
36f5d9ef | 1718 | /* Only handle messages from first T9 instance */ |
333e5a9a | 1719 | data->T9_reportid_min = min_id; |
36f5d9ef ND |
1720 | data->T9_reportid_max = min_id + |
1721 | object->num_report_ids - 1; | |
1722 | data->num_touchids = object->num_report_ids; | |
9d8dc3e5 | 1723 | break; |
74d905d2 ND |
1724 | case MXT_SPT_COMMSCONFIG_T18: |
1725 | data->T18_address = object->start_address; | |
1726 | break; | |
9d8dc3e5 ND |
1727 | case MXT_SPT_MESSAGECOUNT_T44: |
1728 | data->T44_address = object->start_address; | |
333e5a9a | 1729 | break; |
22dfab7f DK |
1730 | case MXT_SPT_GPIOPWM_T19: |
1731 | data->T19_reportid = min_id; | |
1732 | break; | |
b23157dc ND |
1733 | case MXT_TOUCH_MULTITOUCHSCREEN_T100: |
1734 | data->multitouch = MXT_TOUCH_MULTITOUCHSCREEN_T100; | |
1735 | data->T100_reportid_min = min_id; | |
1736 | data->T100_reportid_max = max_id; | |
1737 | /* first two report IDs reserved */ | |
1738 | data->num_touchids = object->num_report_ids - 2; | |
1739 | break; | |
4cf51c38 | 1740 | } |
4ce6fa01 ND |
1741 | |
1742 | end_address = object->start_address | |
1743 | + mxt_obj_size(object) * mxt_obj_instances(object) - 1; | |
1744 | ||
1745 | if (end_address >= data->mem_size) | |
1746 | data->mem_size = end_address + 1; | |
4cf51c38 JS |
1747 | } |
1748 | ||
9d8dc3e5 ND |
1749 | /* Store maximum reportid */ |
1750 | data->max_reportid = reportid; | |
1751 | ||
1752 | /* If T44 exists, T5 position has to be directly after */ | |
1753 | if (data->T44_address && (data->T5_address != data->T44_address + 1)) { | |
1754 | dev_err(&client->dev, "Invalid T44 position\n"); | |
068bdb67 | 1755 | return -EINVAL; |
9d8dc3e5 ND |
1756 | } |
1757 | ||
1758 | data->msg_buf = kcalloc(data->max_reportid, | |
1759 | data->T5_msg_size, GFP_KERNEL); | |
068bdb67 ND |
1760 | if (!data->msg_buf) |
1761 | return -ENOMEM; | |
1762 | ||
1763 | return 0; | |
1764 | } | |
1765 | ||
1766 | static int mxt_read_info_block(struct mxt_data *data) | |
1767 | { | |
1768 | struct i2c_client *client = data->client; | |
1769 | int error; | |
1770 | size_t size; | |
1771 | void *id_buf, *buf; | |
1772 | uint8_t num_objects; | |
1773 | u32 calculated_crc; | |
1774 | u8 *crc_ptr; | |
1775 | ||
1776 | /* If info block already allocated, free it */ | |
1777 | if (data->raw_info_block) | |
1778 | mxt_free_object_table(data); | |
1779 | ||
1780 | /* Read 7-byte ID information block starting at address 0 */ | |
1781 | size = sizeof(struct mxt_info); | |
1782 | id_buf = kzalloc(size, GFP_KERNEL); | |
1783 | if (!id_buf) | |
1784 | return -ENOMEM; | |
1785 | ||
1786 | error = __mxt_read_reg(client, 0, size, id_buf); | |
1787 | if (error) | |
1788 | goto err_free_mem; | |
1789 | ||
1790 | /* Resize buffer to give space for rest of info block */ | |
1791 | num_objects = ((struct mxt_info *)id_buf)->object_num; | |
1792 | size += (num_objects * sizeof(struct mxt_object)) | |
1793 | + MXT_INFO_CHECKSUM_SIZE; | |
1794 | ||
1795 | buf = krealloc(id_buf, size, GFP_KERNEL); | |
1796 | if (!buf) { | |
5f3f9bc2 | 1797 | error = -ENOMEM; |
068bdb67 ND |
1798 | goto err_free_mem; |
1799 | } | |
1800 | id_buf = buf; | |
1801 | ||
1802 | /* Read rest of info block */ | |
1803 | error = __mxt_read_reg(client, MXT_OBJECT_START, | |
1804 | size - MXT_OBJECT_START, | |
1805 | id_buf + MXT_OBJECT_START); | |
1806 | if (error) | |
1807 | goto err_free_mem; | |
1808 | ||
1809 | /* Extract & calculate checksum */ | |
1810 | crc_ptr = id_buf + size - MXT_INFO_CHECKSUM_SIZE; | |
1811 | data->info_crc = crc_ptr[0] | (crc_ptr[1] << 8) | (crc_ptr[2] << 16); | |
1812 | ||
1813 | calculated_crc = mxt_calculate_crc(id_buf, 0, | |
1814 | size - MXT_INFO_CHECKSUM_SIZE); | |
1815 | ||
1816 | /* | |
1817 | * CRC mismatch can be caused by data corruption due to I2C comms | |
1818 | * issue or else device is not using Object Based Protocol (eg i2c-hid) | |
1819 | */ | |
1820 | if ((data->info_crc == 0) || (data->info_crc != calculated_crc)) { | |
1821 | dev_err(&client->dev, | |
1822 | "Info Block CRC error calculated=0x%06X read=0x%06X\n", | |
1823 | calculated_crc, data->info_crc); | |
1824 | error = -EIO; | |
1825 | goto err_free_mem; | |
1826 | } | |
1827 | ||
1828 | data->raw_info_block = id_buf; | |
1829 | data->info = (struct mxt_info *)id_buf; | |
1830 | ||
1831 | dev_info(&client->dev, | |
1832 | "Family: %u Variant: %u Firmware V%u.%u.%02X Objects: %u\n", | |
1833 | data->info->family_id, data->info->variant_id, | |
1834 | data->info->version >> 4, data->info->version & 0xf, | |
1835 | data->info->build, data->info->object_num); | |
1836 | ||
1837 | /* Parse object table information */ | |
1838 | error = mxt_parse_object_table(data, id_buf + MXT_OBJECT_START); | |
1839 | if (error) { | |
1840 | dev_err(&client->dev, "Error %d parsing object table\n", error); | |
1841 | mxt_free_object_table(data); | |
1842 | goto err_free_mem; | |
5f3f9bc2 ND |
1843 | } |
1844 | ||
068bdb67 | 1845 | data->object_table = (struct mxt_object *)(id_buf + MXT_OBJECT_START); |
dd24dcf5 | 1846 | |
4cf51c38 | 1847 | return 0; |
4cf51c38 | 1848 | |
068bdb67 ND |
1849 | err_free_mem: |
1850 | kfree(id_buf); | |
5f3f9bc2 | 1851 | return error; |
7d4fa100 DK |
1852 | } |
1853 | ||
61dc1aba ND |
1854 | static int mxt_read_t9_resolution(struct mxt_data *data) |
1855 | { | |
1856 | struct i2c_client *client = data->client; | |
1857 | int error; | |
1858 | struct t9_range range; | |
1859 | unsigned char orient; | |
1860 | struct mxt_object *object; | |
1861 | ||
1862 | object = mxt_get_object(data, MXT_TOUCH_MULTI_T9); | |
1863 | if (!object) | |
1864 | return -EINVAL; | |
1865 | ||
2786489f ND |
1866 | error = __mxt_read_reg(client, |
1867 | object->start_address + MXT_T9_XSIZE, | |
1868 | sizeof(data->xsize), &data->xsize); | |
1869 | if (error) | |
1870 | return error; | |
1871 | ||
1872 | error = __mxt_read_reg(client, | |
1873 | object->start_address + MXT_T9_YSIZE, | |
1874 | sizeof(data->ysize), &data->ysize); | |
1875 | if (error) | |
1876 | return error; | |
1877 | ||
61dc1aba ND |
1878 | error = __mxt_read_reg(client, |
1879 | object->start_address + MXT_T9_RANGE, | |
1880 | sizeof(range), &range); | |
1881 | if (error) | |
1882 | return error; | |
1883 | ||
1c0276d5 ND |
1884 | data->max_x = get_unaligned_le16(&range.x); |
1885 | data->max_y = get_unaligned_le16(&range.y); | |
61dc1aba ND |
1886 | |
1887 | error = __mxt_read_reg(client, | |
1888 | object->start_address + MXT_T9_ORIENT, | |
1889 | 1, &orient); | |
1890 | if (error) | |
1891 | return error; | |
1892 | ||
1c0276d5 | 1893 | data->xy_switch = orient & MXT_T9_ORIENT_SWITCH; |
de601f71 ND |
1894 | data->invertx = orient & MXT_T9_ORIENT_INVERTX; |
1895 | data->inverty = orient & MXT_T9_ORIENT_INVERTY; | |
61dc1aba ND |
1896 | |
1897 | return 0; | |
1898 | } | |
1899 | ||
b23157dc ND |
1900 | static int mxt_read_t100_config(struct mxt_data *data) |
1901 | { | |
1902 | struct i2c_client *client = data->client; | |
1903 | int error; | |
1904 | struct mxt_object *object; | |
1905 | u16 range_x, range_y; | |
1906 | u8 cfg, tchaux; | |
1907 | u8 aux; | |
1908 | ||
1909 | object = mxt_get_object(data, MXT_TOUCH_MULTITOUCHSCREEN_T100); | |
1910 | if (!object) | |
1911 | return -EINVAL; | |
1912 | ||
1c0276d5 | 1913 | /* read touchscreen dimensions */ |
b23157dc ND |
1914 | error = __mxt_read_reg(client, |
1915 | object->start_address + MXT_T100_XRANGE, | |
1916 | sizeof(range_x), &range_x); | |
1917 | if (error) | |
1918 | return error; | |
1919 | ||
1c0276d5 | 1920 | data->max_x = get_unaligned_le16(&range_x); |
b23157dc ND |
1921 | |
1922 | error = __mxt_read_reg(client, | |
1923 | object->start_address + MXT_T100_YRANGE, | |
1924 | sizeof(range_y), &range_y); | |
1925 | if (error) | |
1926 | return error; | |
1927 | ||
1c0276d5 | 1928 | data->max_y = get_unaligned_le16(&range_y); |
b23157dc | 1929 | |
2786489f ND |
1930 | error = __mxt_read_reg(client, |
1931 | object->start_address + MXT_T100_XSIZE, | |
1932 | sizeof(data->xsize), &data->xsize); | |
1933 | if (error) | |
1934 | return error; | |
1935 | ||
1936 | error = __mxt_read_reg(client, | |
1937 | object->start_address + MXT_T100_YSIZE, | |
1938 | sizeof(data->ysize), &data->ysize); | |
1939 | if (error) | |
1940 | return error; | |
1941 | ||
1c0276d5 | 1942 | /* read orientation config */ |
b23157dc ND |
1943 | error = __mxt_read_reg(client, |
1944 | object->start_address + MXT_T100_CFG1, | |
1945 | 1, &cfg); | |
1946 | if (error) | |
1947 | return error; | |
1948 | ||
1c0276d5 | 1949 | data->xy_switch = cfg & MXT_T100_CFG_SWITCHXY; |
de601f71 ND |
1950 | data->invertx = cfg & MXT_T100_CFG_INVERTX; |
1951 | data->inverty = cfg & MXT_T100_CFG_INVERTY; | |
1c0276d5 ND |
1952 | |
1953 | /* allocate aux bytes */ | |
b23157dc ND |
1954 | error = __mxt_read_reg(client, |
1955 | object->start_address + MXT_T100_TCHAUX, | |
1956 | 1, &tchaux); | |
1957 | if (error) | |
1958 | return error; | |
1959 | ||
b23157dc ND |
1960 | aux = 6; |
1961 | ||
1962 | if (tchaux & MXT_T100_TCHAUX_VECT) | |
1963 | data->t100_aux_vect = aux++; | |
1964 | ||
1965 | if (tchaux & MXT_T100_TCHAUX_AMPL) | |
1966 | data->t100_aux_ampl = aux++; | |
1967 | ||
1968 | if (tchaux & MXT_T100_TCHAUX_AREA) | |
1969 | data->t100_aux_area = aux++; | |
1970 | ||
1971 | dev_dbg(&client->dev, | |
1972 | "T100 aux mappings vect:%u ampl:%u area:%u\n", | |
1973 | data->t100_aux_vect, data->t100_aux_ampl, data->t100_aux_area); | |
1974 | ||
b23157dc ND |
1975 | return 0; |
1976 | } | |
1977 | ||
7a53d609 ND |
1978 | static int mxt_input_open(struct input_dev *dev); |
1979 | static void mxt_input_close(struct input_dev *dev); | |
1980 | ||
b6d2d328 SS |
1981 | static void mxt_set_up_as_touchpad(struct input_dev *input_dev, |
1982 | struct mxt_data *data) | |
1983 | { | |
b6d2d328 SS |
1984 | int i; |
1985 | ||
1986 | input_dev->name = "Atmel maXTouch Touchpad"; | |
1987 | ||
1988 | __set_bit(INPUT_PROP_BUTTONPAD, input_dev->propbit); | |
1989 | ||
1990 | input_abs_set_res(input_dev, ABS_X, MXT_PIXELS_PER_MM); | |
1991 | input_abs_set_res(input_dev, ABS_Y, MXT_PIXELS_PER_MM); | |
1992 | input_abs_set_res(input_dev, ABS_MT_POSITION_X, | |
1993 | MXT_PIXELS_PER_MM); | |
1994 | input_abs_set_res(input_dev, ABS_MT_POSITION_Y, | |
1995 | MXT_PIXELS_PER_MM); | |
1996 | ||
96a938aa DT |
1997 | for (i = 0; i < data->t19_num_keys; i++) |
1998 | if (data->t19_keymap[i] != KEY_RESERVED) | |
b6d2d328 | 1999 | input_set_capability(input_dev, EV_KEY, |
96a938aa | 2000 | data->t19_keymap[i]); |
b6d2d328 SS |
2001 | } |
2002 | ||
b23157dc | 2003 | static int mxt_initialize_input_device(struct mxt_data *data) |
7a53d609 | 2004 | { |
b6d2d328 | 2005 | struct device *dev = &data->client->dev; |
7a53d609 ND |
2006 | struct input_dev *input_dev; |
2007 | int error; | |
2008 | unsigned int num_mt_slots; | |
2009 | unsigned int mt_flags = 0; | |
7a53d609 | 2010 | |
b23157dc ND |
2011 | switch (data->multitouch) { |
2012 | case MXT_TOUCH_MULTI_T9: | |
2013 | num_mt_slots = data->T9_reportid_max - data->T9_reportid_min + 1; | |
2014 | error = mxt_read_t9_resolution(data); | |
2015 | if (error) | |
2016 | dev_warn(dev, "Failed to initialize T9 resolution\n"); | |
2017 | break; | |
2018 | ||
2019 | case MXT_TOUCH_MULTITOUCHSCREEN_T100: | |
2020 | num_mt_slots = data->num_touchids; | |
2021 | error = mxt_read_t100_config(data); | |
2022 | if (error) | |
2023 | dev_warn(dev, "Failed to read T100 config\n"); | |
2024 | break; | |
2025 | ||
2026 | default: | |
2027 | dev_err(dev, "Invalid multitouch object\n"); | |
2028 | return -EINVAL; | |
2029 | } | |
7a53d609 | 2030 | |
1c0276d5 ND |
2031 | /* Handle default values and orientation switch */ |
2032 | if (data->max_x == 0) | |
2033 | data->max_x = 1023; | |
2034 | ||
2035 | if (data->max_y == 0) | |
2036 | data->max_y = 1023; | |
2037 | ||
2038 | if (data->xy_switch) | |
2039 | swap(data->max_x, data->max_y); | |
2040 | ||
2041 | dev_info(dev, "Touchscreen size X%uY%u\n", data->max_x, data->max_y); | |
2042 | ||
2043 | /* Register input device */ | |
7a53d609 | 2044 | input_dev = input_allocate_device(); |
01cc75f9 | 2045 | if (!input_dev) |
7a53d609 | 2046 | return -ENOMEM; |
7a53d609 ND |
2047 | |
2048 | input_dev->name = "Atmel maXTouch Touchscreen"; | |
2049 | input_dev->phys = data->phys; | |
2050 | input_dev->id.bustype = BUS_I2C; | |
2051 | input_dev->dev.parent = dev; | |
2052 | input_dev->open = mxt_input_open; | |
2053 | input_dev->close = mxt_input_close; | |
2054 | ||
b23157dc | 2055 | input_set_capability(input_dev, EV_KEY, BTN_TOUCH); |
7a53d609 | 2056 | |
7a53d609 | 2057 | /* For single touch */ |
b23157dc ND |
2058 | input_set_abs_params(input_dev, ABS_X, 0, data->max_x, 0, 0); |
2059 | input_set_abs_params(input_dev, ABS_Y, 0, data->max_y, 0, 0); | |
2060 | ||
2061 | if (data->multitouch == MXT_TOUCH_MULTI_T9 || | |
2062 | (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 && | |
2063 | data->t100_aux_ampl)) { | |
2064 | input_set_abs_params(input_dev, ABS_PRESSURE, 0, 255, 0, 0); | |
2065 | } | |
7a53d609 | 2066 | |
b6d2d328 | 2067 | /* If device has buttons we assume it is a touchpad */ |
96a938aa | 2068 | if (data->t19_num_keys) { |
b6d2d328 SS |
2069 | mxt_set_up_as_touchpad(input_dev, data); |
2070 | mt_flags |= INPUT_MT_POINTER; | |
eafc0c87 ND |
2071 | } else { |
2072 | mt_flags |= INPUT_MT_DIRECT; | |
b6d2d328 SS |
2073 | } |
2074 | ||
7a53d609 | 2075 | /* For multi touch */ |
7a53d609 ND |
2076 | error = input_mt_init_slots(input_dev, num_mt_slots, mt_flags); |
2077 | if (error) { | |
2078 | dev_err(dev, "Error %d initialising slots\n", error); | |
2079 | goto err_free_mem; | |
2080 | } | |
2081 | ||
b23157dc ND |
2082 | if (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100) { |
2083 | input_set_abs_params(input_dev, ABS_MT_TOOL_TYPE, | |
2084 | 0, MT_TOOL_MAX, 0, 0); | |
2085 | input_set_abs_params(input_dev, ABS_MT_DISTANCE, | |
2086 | MXT_DISTANCE_ACTIVE_TOUCH, | |
2087 | MXT_DISTANCE_HOVERING, | |
2088 | 0, 0); | |
2089 | } | |
2090 | ||
7a53d609 ND |
2091 | input_set_abs_params(input_dev, ABS_MT_POSITION_X, |
2092 | 0, data->max_x, 0, 0); | |
2093 | input_set_abs_params(input_dev, ABS_MT_POSITION_Y, | |
2094 | 0, data->max_y, 0, 0); | |
b23157dc ND |
2095 | |
2096 | if (data->multitouch == MXT_TOUCH_MULTI_T9 || | |
2097 | (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 && | |
2098 | data->t100_aux_area)) { | |
2099 | input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR, | |
2100 | 0, MXT_MAX_AREA, 0, 0); | |
2101 | } | |
2102 | ||
2103 | if (data->multitouch == MXT_TOUCH_MULTI_T9 || | |
2104 | (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 && | |
2105 | data->t100_aux_ampl)) { | |
2106 | input_set_abs_params(input_dev, ABS_MT_PRESSURE, | |
2107 | 0, 255, 0, 0); | |
2108 | } | |
2109 | ||
2110 | if (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 && | |
2111 | data->t100_aux_vect) { | |
2112 | input_set_abs_params(input_dev, ABS_MT_ORIENTATION, | |
2113 | 0, 255, 0, 0); | |
2114 | } | |
2115 | ||
b23157dc ND |
2116 | if (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 && |
2117 | data->t100_aux_vect) { | |
2118 | input_set_abs_params(input_dev, ABS_MT_ORIENTATION, | |
2119 | 0, 255, 0, 0); | |
2120 | } | |
7a53d609 ND |
2121 | |
2122 | input_set_drvdata(input_dev, data); | |
2123 | ||
2124 | error = input_register_device(input_dev); | |
2125 | if (error) { | |
2126 | dev_err(dev, "Error %d registering input device\n", error); | |
2127 | goto err_free_mem; | |
2128 | } | |
2129 | ||
2130 | data->input_dev = input_dev; | |
2131 | ||
2132 | return 0; | |
2133 | ||
2134 | err_free_mem: | |
2135 | input_free_device(input_dev); | |
2136 | return error; | |
2137 | } | |
2138 | ||
50a77c65 ND |
2139 | static int mxt_configure_objects(struct mxt_data *data, |
2140 | const struct firmware *cfg); | |
2141 | ||
2142 | static void mxt_config_cb(const struct firmware *cfg, void *ctx) | |
2143 | { | |
2144 | mxt_configure_objects(ctx, cfg); | |
efdbd7ae | 2145 | release_firmware(cfg); |
50a77c65 ND |
2146 | } |
2147 | ||
7686b108 | 2148 | static int mxt_initialize(struct mxt_data *data) |
4cf51c38 JS |
2149 | { |
2150 | struct i2c_client *client = data->client; | |
6cd1ab0f | 2151 | int recovery_attempts = 0; |
4cf51c38 | 2152 | int error; |
4cf51c38 | 2153 | |
6cd1ab0f | 2154 | while (1) { |
068bdb67 | 2155 | error = mxt_read_info_block(data); |
6cd1ab0f DT |
2156 | if (!error) |
2157 | break; | |
2158 | ||
2159 | /* Check bootloader state */ | |
2160 | error = mxt_probe_bootloader(data, false); | |
8efaa5e5 | 2161 | if (error) { |
6cd1ab0f DT |
2162 | dev_info(&client->dev, "Trying alternate bootloader address\n"); |
2163 | error = mxt_probe_bootloader(data, true); | |
2164 | if (error) { | |
8efaa5e5 ND |
2165 | /* Chip is not in appmode or bootloader mode */ |
2166 | return error; | |
2167 | } | |
6cd1ab0f | 2168 | } |
a9fdd1e6 | 2169 | |
6cd1ab0f DT |
2170 | /* OK, we are in bootloader, see if we can recover */ |
2171 | if (++recovery_attempts > 1) { | |
2172 | dev_err(&client->dev, "Could not recover from bootloader mode\n"); | |
2173 | /* | |
2174 | * We can reflash from this state, so do not | |
2175 | * abort initialization. | |
2176 | */ | |
2177 | data->in_bootloader = true; | |
2178 | return 0; | |
8efaa5e5 | 2179 | } |
6cd1ab0f DT |
2180 | |
2181 | /* Attempt to exit bootloader into app mode */ | |
2182 | mxt_send_bootloader_cmd(data, false); | |
2183 | msleep(MXT_FW_RESET_TIME); | |
a9fdd1e6 | 2184 | } |
4cf51c38 | 2185 | |
041fa159 | 2186 | error = mxt_acquire_irq(data); |
dd24dcf5 | 2187 | if (error) |
068bdb67 | 2188 | return error; |
dd24dcf5 | 2189 | |
74d905d2 ND |
2190 | error = mxt_check_retrigen(data); |
2191 | if (error) | |
2192 | return error; | |
2193 | ||
6cd1ab0f DT |
2194 | error = request_firmware_nowait(THIS_MODULE, true, MXT_CFG_NAME, |
2195 | &client->dev, GFP_KERNEL, data, | |
2196 | mxt_config_cb); | |
2197 | if (error) { | |
2198 | dev_err(&client->dev, "Failed to invoke firmware loader: %d\n", | |
2199 | error); | |
068bdb67 | 2200 | return error; |
6cd1ab0f | 2201 | } |
50a77c65 ND |
2202 | |
2203 | return 0; | |
50a77c65 ND |
2204 | } |
2205 | ||
7f3884f7 ND |
2206 | static int mxt_set_t7_power_cfg(struct mxt_data *data, u8 sleep) |
2207 | { | |
2208 | struct device *dev = &data->client->dev; | |
2209 | int error; | |
2210 | struct t7_config *new_config; | |
2211 | struct t7_config deepsleep = { .active = 0, .idle = 0 }; | |
2212 | ||
2213 | if (sleep == MXT_POWER_CFG_DEEPSLEEP) | |
2214 | new_config = &deepsleep; | |
2215 | else | |
2216 | new_config = &data->t7_cfg; | |
2217 | ||
2218 | error = __mxt_write_reg(data->client, data->T7_address, | |
2219 | sizeof(data->t7_cfg), new_config); | |
2220 | if (error) | |
2221 | return error; | |
2222 | ||
2223 | dev_dbg(dev, "Set T7 ACTV:%d IDLE:%d\n", | |
2224 | new_config->active, new_config->idle); | |
2225 | ||
2226 | return 0; | |
2227 | } | |
2228 | ||
2229 | static int mxt_init_t7_power_cfg(struct mxt_data *data) | |
2230 | { | |
2231 | struct device *dev = &data->client->dev; | |
2232 | int error; | |
2233 | bool retry = false; | |
2234 | ||
2235 | recheck: | |
2236 | error = __mxt_read_reg(data->client, data->T7_address, | |
2237 | sizeof(data->t7_cfg), &data->t7_cfg); | |
2238 | if (error) | |
2239 | return error; | |
2240 | ||
2241 | if (data->t7_cfg.active == 0 || data->t7_cfg.idle == 0) { | |
2242 | if (!retry) { | |
2243 | dev_dbg(dev, "T7 cfg zero, resetting\n"); | |
2244 | mxt_soft_reset(data); | |
2245 | retry = true; | |
2246 | goto recheck; | |
2247 | } else { | |
2248 | dev_dbg(dev, "T7 cfg zero after reset, overriding\n"); | |
2249 | data->t7_cfg.active = 20; | |
2250 | data->t7_cfg.idle = 100; | |
2251 | return mxt_set_t7_power_cfg(data, MXT_POWER_CFG_RUN); | |
2252 | } | |
2253 | } | |
2254 | ||
2255 | dev_dbg(dev, "Initialized power cfg: ACTV %d, IDLE %d\n", | |
2256 | data->t7_cfg.active, data->t7_cfg.idle); | |
2257 | return 0; | |
2258 | } | |
2259 | ||
d6a39404 | 2260 | #ifdef CONFIG_TOUCHSCREEN_ATMEL_MXT_T37 |
5cecc2bc NH |
2261 | static const struct v4l2_file_operations mxt_video_fops = { |
2262 | .owner = THIS_MODULE, | |
2263 | .open = v4l2_fh_open, | |
2264 | .release = vb2_fop_release, | |
2265 | .unlocked_ioctl = video_ioctl2, | |
2266 | .read = vb2_fop_read, | |
2267 | .mmap = vb2_fop_mmap, | |
2268 | .poll = vb2_fop_poll, | |
2269 | }; | |
2270 | ||
d6a39404 ND |
2271 | static u16 mxt_get_debug_value(struct mxt_data *data, unsigned int x, |
2272 | unsigned int y) | |
2273 | { | |
068bdb67 | 2274 | struct mxt_info *info = data->info; |
d6a39404 ND |
2275 | struct mxt_dbg *dbg = &data->dbg; |
2276 | unsigned int ofs, page; | |
566d533a ND |
2277 | unsigned int col = 0; |
2278 | unsigned int col_width; | |
2279 | ||
2280 | if (info->family_id == MXT_FAMILY_1386) { | |
2281 | col_width = info->matrix_ysize / MXT1386_COLUMNS; | |
2282 | col = y / col_width; | |
2283 | y = y % col_width; | |
2284 | } else { | |
2285 | col_width = info->matrix_ysize; | |
2286 | } | |
d6a39404 | 2287 | |
566d533a | 2288 | ofs = (y + (x * col_width)) * sizeof(u16); |
d6a39404 ND |
2289 | page = ofs / MXT_DIAGNOSTIC_SIZE; |
2290 | ofs %= MXT_DIAGNOSTIC_SIZE; | |
2291 | ||
566d533a ND |
2292 | if (info->family_id == MXT_FAMILY_1386) |
2293 | page += col * MXT1386_PAGES_PER_COLUMN; | |
2294 | ||
d6a39404 ND |
2295 | return get_unaligned_le16(&dbg->t37_buf[page].data[ofs]); |
2296 | } | |
2297 | ||
2298 | static int mxt_convert_debug_pages(struct mxt_data *data, u16 *outbuf) | |
2299 | { | |
2300 | struct mxt_dbg *dbg = &data->dbg; | |
2301 | unsigned int x = 0; | |
2302 | unsigned int y = 0; | |
de601f71 | 2303 | unsigned int i, rx, ry; |
d6a39404 ND |
2304 | |
2305 | for (i = 0; i < dbg->t37_nodes; i++) { | |
de601f71 ND |
2306 | /* Handle orientation */ |
2307 | rx = data->xy_switch ? y : x; | |
2308 | ry = data->xy_switch ? x : y; | |
2309 | rx = data->invertx ? (data->xsize - 1 - rx) : rx; | |
2310 | ry = data->inverty ? (data->ysize - 1 - ry) : ry; | |
2311 | ||
2312 | outbuf[i] = mxt_get_debug_value(data, rx, ry); | |
d6a39404 ND |
2313 | |
2314 | /* Next value */ | |
de601f71 | 2315 | if (++x >= (data->xy_switch ? data->ysize : data->xsize)) { |
d6a39404 ND |
2316 | x = 0; |
2317 | y++; | |
2318 | } | |
2319 | } | |
2320 | ||
2321 | return 0; | |
2322 | } | |
2323 | ||
2324 | static int mxt_read_diagnostic_debug(struct mxt_data *data, u8 mode, | |
2325 | u16 *outbuf) | |
2326 | { | |
2327 | struct mxt_dbg *dbg = &data->dbg; | |
2328 | int retries = 0; | |
2329 | int page; | |
2330 | int ret; | |
2331 | u8 cmd = mode; | |
2332 | struct t37_debug *p; | |
2333 | u8 cmd_poll; | |
2334 | ||
2335 | for (page = 0; page < dbg->t37_pages; page++) { | |
2336 | p = dbg->t37_buf + page; | |
2337 | ||
2338 | ret = mxt_write_reg(data->client, dbg->diag_cmd_address, | |
2339 | cmd); | |
2340 | if (ret) | |
2341 | return ret; | |
2342 | ||
2343 | retries = 0; | |
2344 | msleep(20); | |
2345 | wait_cmd: | |
2346 | /* Read back command byte */ | |
2347 | ret = __mxt_read_reg(data->client, dbg->diag_cmd_address, | |
2348 | sizeof(cmd_poll), &cmd_poll); | |
2349 | if (ret) | |
2350 | return ret; | |
2351 | ||
2352 | /* Field is cleared once the command has been processed */ | |
2353 | if (cmd_poll) { | |
2354 | if (retries++ > 100) | |
2355 | return -EINVAL; | |
2356 | ||
2357 | msleep(20); | |
2358 | goto wait_cmd; | |
2359 | } | |
2360 | ||
2361 | /* Read T37 page */ | |
2362 | ret = __mxt_read_reg(data->client, dbg->t37_address, | |
2363 | sizeof(struct t37_debug), p); | |
2364 | if (ret) | |
2365 | return ret; | |
2366 | ||
2367 | if (p->mode != mode || p->page != page) { | |
2368 | dev_err(&data->client->dev, "T37 page mismatch\n"); | |
2369 | return -EINVAL; | |
2370 | } | |
2371 | ||
2372 | dev_dbg(&data->client->dev, "%s page:%d retries:%d\n", | |
2373 | __func__, page, retries); | |
2374 | ||
2375 | /* For remaining pages, write PAGEUP rather than mode */ | |
2376 | cmd = MXT_DIAGNOSTIC_PAGEUP; | |
2377 | } | |
2378 | ||
2379 | return mxt_convert_debug_pages(data, outbuf); | |
2380 | } | |
2381 | ||
ecfdd7e2 ND |
2382 | static int mxt_queue_setup(struct vb2_queue *q, |
2383 | unsigned int *nbuffers, unsigned int *nplanes, | |
2384 | unsigned int sizes[], struct device *alloc_devs[]) | |
2385 | { | |
2386 | struct mxt_data *data = q->drv_priv; | |
2387 | size_t size = data->dbg.t37_nodes * sizeof(u16); | |
2388 | ||
2389 | if (*nplanes) | |
2390 | return sizes[0] < size ? -EINVAL : 0; | |
2391 | ||
2392 | *nplanes = 1; | |
2393 | sizes[0] = size; | |
2394 | ||
2395 | return 0; | |
2396 | } | |
2397 | ||
2398 | static void mxt_buffer_queue(struct vb2_buffer *vb) | |
2399 | { | |
2400 | struct mxt_data *data = vb2_get_drv_priv(vb->vb2_queue); | |
2401 | u16 *ptr; | |
2402 | int ret; | |
06b3d3f3 | 2403 | u8 mode; |
ecfdd7e2 ND |
2404 | |
2405 | ptr = vb2_plane_vaddr(vb, 0); | |
2406 | if (!ptr) { | |
2407 | dev_err(&data->client->dev, "Error acquiring frame ptr\n"); | |
2408 | goto fault; | |
2409 | } | |
2410 | ||
06b3d3f3 ND |
2411 | switch (data->dbg.input) { |
2412 | case MXT_V4L_INPUT_DELTAS: | |
2413 | default: | |
2414 | mode = MXT_DIAGNOSTIC_DELTAS; | |
2415 | break; | |
2416 | ||
2417 | case MXT_V4L_INPUT_REFS: | |
2418 | mode = MXT_DIAGNOSTIC_REFS; | |
2419 | break; | |
2420 | } | |
2421 | ||
2422 | ret = mxt_read_diagnostic_debug(data, mode, ptr); | |
ecfdd7e2 ND |
2423 | if (ret) |
2424 | goto fault; | |
2425 | ||
2426 | vb2_set_plane_payload(vb, 0, data->dbg.t37_nodes * sizeof(u16)); | |
2427 | vb2_buffer_done(vb, VB2_BUF_STATE_DONE); | |
2428 | return; | |
2429 | ||
2430 | fault: | |
2431 | vb2_buffer_done(vb, VB2_BUF_STATE_ERROR); | |
2432 | } | |
2433 | ||
2434 | /* V4L2 structures */ | |
2435 | static const struct vb2_ops mxt_queue_ops = { | |
2436 | .queue_setup = mxt_queue_setup, | |
2437 | .buf_queue = mxt_buffer_queue, | |
2438 | .wait_prepare = vb2_ops_wait_prepare, | |
2439 | .wait_finish = vb2_ops_wait_finish, | |
2440 | }; | |
2441 | ||
2442 | static const struct vb2_queue mxt_queue = { | |
2443 | .type = V4L2_BUF_TYPE_VIDEO_CAPTURE, | |
2444 | .io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF | VB2_READ, | |
2445 | .buf_struct_size = sizeof(struct mxt_vb2_buffer), | |
2446 | .ops = &mxt_queue_ops, | |
2447 | .mem_ops = &vb2_vmalloc_memops, | |
2448 | .timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC, | |
2449 | .min_buffers_needed = 1, | |
2450 | }; | |
2451 | ||
2452 | static int mxt_vidioc_querycap(struct file *file, void *priv, | |
2453 | struct v4l2_capability *cap) | |
2454 | { | |
2455 | struct mxt_data *data = video_drvdata(file); | |
2456 | ||
2457 | strlcpy(cap->driver, "atmel_mxt_ts", sizeof(cap->driver)); | |
2458 | strlcpy(cap->card, "atmel_mxt_ts touch", sizeof(cap->card)); | |
2459 | snprintf(cap->bus_info, sizeof(cap->bus_info), | |
2460 | "I2C:%s", dev_name(&data->client->dev)); | |
2461 | return 0; | |
2462 | } | |
2463 | ||
2464 | static int mxt_vidioc_enum_input(struct file *file, void *priv, | |
2465 | struct v4l2_input *i) | |
2466 | { | |
06b3d3f3 | 2467 | if (i->index >= MXT_V4L_INPUT_MAX) |
ecfdd7e2 ND |
2468 | return -EINVAL; |
2469 | ||
2470 | i->type = V4L2_INPUT_TYPE_TOUCH; | |
06b3d3f3 ND |
2471 | |
2472 | switch (i->index) { | |
2473 | case MXT_V4L_INPUT_REFS: | |
2474 | strlcpy(i->name, "Mutual Capacitance References", | |
2475 | sizeof(i->name)); | |
2476 | break; | |
2477 | case MXT_V4L_INPUT_DELTAS: | |
2478 | strlcpy(i->name, "Mutual Capacitance Deltas", sizeof(i->name)); | |
2479 | break; | |
2480 | } | |
2481 | ||
ecfdd7e2 ND |
2482 | return 0; |
2483 | } | |
2484 | ||
2485 | static int mxt_set_input(struct mxt_data *data, unsigned int i) | |
2486 | { | |
2487 | struct v4l2_pix_format *f = &data->dbg.format; | |
2488 | ||
06b3d3f3 | 2489 | if (i >= MXT_V4L_INPUT_MAX) |
ecfdd7e2 ND |
2490 | return -EINVAL; |
2491 | ||
06b3d3f3 ND |
2492 | if (i == MXT_V4L_INPUT_DELTAS) |
2493 | f->pixelformat = V4L2_TCH_FMT_DELTA_TD16; | |
2494 | else | |
2495 | f->pixelformat = V4L2_TCH_FMT_TU16; | |
2496 | ||
de601f71 ND |
2497 | f->width = data->xy_switch ? data->ysize : data->xsize; |
2498 | f->height = data->xy_switch ? data->xsize : data->ysize; | |
ecfdd7e2 ND |
2499 | f->field = V4L2_FIELD_NONE; |
2500 | f->colorspace = V4L2_COLORSPACE_RAW; | |
2501 | f->bytesperline = f->width * sizeof(u16); | |
2502 | f->sizeimage = f->width * f->height * sizeof(u16); | |
2503 | ||
2504 | data->dbg.input = i; | |
2505 | ||
2506 | return 0; | |
2507 | } | |
2508 | ||
2509 | static int mxt_vidioc_s_input(struct file *file, void *priv, unsigned int i) | |
2510 | { | |
2511 | return mxt_set_input(video_drvdata(file), i); | |
2512 | } | |
2513 | ||
2514 | static int mxt_vidioc_g_input(struct file *file, void *priv, unsigned int *i) | |
2515 | { | |
2516 | struct mxt_data *data = video_drvdata(file); | |
2517 | ||
2518 | *i = data->dbg.input; | |
2519 | ||
2520 | return 0; | |
2521 | } | |
2522 | ||
2523 | static int mxt_vidioc_fmt(struct file *file, void *priv, struct v4l2_format *f) | |
2524 | { | |
2525 | struct mxt_data *data = video_drvdata(file); | |
2526 | ||
2527 | f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
2528 | f->fmt.pix = data->dbg.format; | |
2529 | ||
2530 | return 0; | |
2531 | } | |
2532 | ||
2533 | static int mxt_vidioc_enum_fmt(struct file *file, void *priv, | |
2534 | struct v4l2_fmtdesc *fmt) | |
2535 | { | |
2536 | if (fmt->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
2537 | return -EINVAL; | |
2538 | ||
06b3d3f3 ND |
2539 | switch (fmt->index) { |
2540 | case 0: | |
2541 | fmt->pixelformat = V4L2_TCH_FMT_TU16; | |
2542 | break; | |
2543 | ||
2544 | case 1: | |
2545 | fmt->pixelformat = V4L2_TCH_FMT_DELTA_TD16; | |
2546 | break; | |
2547 | ||
2548 | default: | |
2549 | return -EINVAL; | |
2550 | } | |
2551 | ||
ecfdd7e2 ND |
2552 | return 0; |
2553 | } | |
2554 | ||
2555 | static int mxt_vidioc_g_parm(struct file *file, void *fh, | |
2556 | struct v4l2_streamparm *a) | |
2557 | { | |
2558 | if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
2559 | return -EINVAL; | |
2560 | ||
2561 | a->parm.capture.readbuffers = 1; | |
2562 | a->parm.capture.timeperframe.numerator = 1; | |
2563 | a->parm.capture.timeperframe.denominator = 10; | |
2564 | return 0; | |
2565 | } | |
2566 | ||
2567 | static const struct v4l2_ioctl_ops mxt_video_ioctl_ops = { | |
2568 | .vidioc_querycap = mxt_vidioc_querycap, | |
2569 | ||
2570 | .vidioc_enum_fmt_vid_cap = mxt_vidioc_enum_fmt, | |
2571 | .vidioc_s_fmt_vid_cap = mxt_vidioc_fmt, | |
2572 | .vidioc_g_fmt_vid_cap = mxt_vidioc_fmt, | |
2573 | .vidioc_try_fmt_vid_cap = mxt_vidioc_fmt, | |
2574 | .vidioc_g_parm = mxt_vidioc_g_parm, | |
2575 | ||
2576 | .vidioc_enum_input = mxt_vidioc_enum_input, | |
2577 | .vidioc_g_input = mxt_vidioc_g_input, | |
2578 | .vidioc_s_input = mxt_vidioc_s_input, | |
2579 | ||
2580 | .vidioc_reqbufs = vb2_ioctl_reqbufs, | |
2581 | .vidioc_create_bufs = vb2_ioctl_create_bufs, | |
2582 | .vidioc_querybuf = vb2_ioctl_querybuf, | |
2583 | .vidioc_qbuf = vb2_ioctl_qbuf, | |
2584 | .vidioc_dqbuf = vb2_ioctl_dqbuf, | |
2585 | .vidioc_expbuf = vb2_ioctl_expbuf, | |
2586 | ||
2587 | .vidioc_streamon = vb2_ioctl_streamon, | |
2588 | .vidioc_streamoff = vb2_ioctl_streamoff, | |
2589 | }; | |
2590 | ||
2591 | static const struct video_device mxt_video_device = { | |
2592 | .name = "Atmel maxTouch", | |
2593 | .fops = &mxt_video_fops, | |
2594 | .ioctl_ops = &mxt_video_ioctl_ops, | |
2595 | .release = video_device_release_empty, | |
2596 | .device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_TOUCH | | |
2597 | V4L2_CAP_READWRITE | V4L2_CAP_STREAMING, | |
2598 | }; | |
2599 | ||
d6a39404 ND |
2600 | static void mxt_debug_init(struct mxt_data *data) |
2601 | { | |
068bdb67 | 2602 | struct mxt_info *info = data->info; |
d6a39404 ND |
2603 | struct mxt_dbg *dbg = &data->dbg; |
2604 | struct mxt_object *object; | |
ecfdd7e2 | 2605 | int error; |
d6a39404 ND |
2606 | |
2607 | object = mxt_get_object(data, MXT_GEN_COMMAND_T6); | |
2608 | if (!object) | |
2609 | goto error; | |
2610 | ||
2611 | dbg->diag_cmd_address = object->start_address + MXT_COMMAND_DIAGNOSTIC; | |
2612 | ||
2613 | object = mxt_get_object(data, MXT_DEBUG_DIAGNOSTIC_T37); | |
2614 | if (!object) | |
2615 | goto error; | |
2616 | ||
2617 | if (mxt_obj_size(object) != sizeof(struct t37_debug)) { | |
2618 | dev_warn(&data->client->dev, "Bad T37 size"); | |
2619 | goto error; | |
2620 | } | |
2621 | ||
2622 | dbg->t37_address = object->start_address; | |
2623 | ||
2624 | /* Calculate size of data and allocate buffer */ | |
2786489f | 2625 | dbg->t37_nodes = data->xsize * data->ysize; |
566d533a ND |
2626 | |
2627 | if (info->family_id == MXT_FAMILY_1386) | |
2628 | dbg->t37_pages = MXT1386_COLUMNS * MXT1386_PAGES_PER_COLUMN; | |
2629 | else | |
2630 | dbg->t37_pages = DIV_ROUND_UP(data->xsize * | |
d7ddf154 | 2631 | info->matrix_ysize * |
566d533a ND |
2632 | sizeof(u16), |
2633 | sizeof(dbg->t37_buf->data)); | |
d6a39404 ND |
2634 | |
2635 | dbg->t37_buf = devm_kmalloc_array(&data->client->dev, dbg->t37_pages, | |
2636 | sizeof(struct t37_debug), GFP_KERNEL); | |
2637 | if (!dbg->t37_buf) | |
2638 | goto error; | |
2639 | ||
ecfdd7e2 ND |
2640 | /* init channel to zero */ |
2641 | mxt_set_input(data, 0); | |
2642 | ||
2643 | /* register video device */ | |
2644 | snprintf(dbg->v4l2.name, sizeof(dbg->v4l2.name), "%s", "atmel_mxt_ts"); | |
2645 | error = v4l2_device_register(&data->client->dev, &dbg->v4l2); | |
2646 | if (error) | |
2647 | goto error; | |
2648 | ||
2649 | /* initialize the queue */ | |
2650 | mutex_init(&dbg->lock); | |
2651 | dbg->queue = mxt_queue; | |
2652 | dbg->queue.drv_priv = data; | |
2653 | dbg->queue.lock = &dbg->lock; | |
2654 | dbg->queue.dev = &data->client->dev; | |
2655 | ||
2656 | error = vb2_queue_init(&dbg->queue); | |
2657 | if (error) | |
2658 | goto error_unreg_v4l2; | |
2659 | ||
2660 | dbg->vdev = mxt_video_device; | |
2661 | dbg->vdev.v4l2_dev = &dbg->v4l2; | |
2662 | dbg->vdev.lock = &dbg->lock; | |
2663 | dbg->vdev.vfl_dir = VFL_DIR_RX; | |
2664 | dbg->vdev.queue = &dbg->queue; | |
2665 | video_set_drvdata(&dbg->vdev, data); | |
2666 | ||
2667 | error = video_register_device(&dbg->vdev, VFL_TYPE_TOUCH, -1); | |
2668 | if (error) | |
2669 | goto error_unreg_v4l2; | |
2670 | ||
d6a39404 ND |
2671 | return; |
2672 | ||
ecfdd7e2 ND |
2673 | error_unreg_v4l2: |
2674 | v4l2_device_unregister(&dbg->v4l2); | |
d6a39404 ND |
2675 | error: |
2676 | dev_warn(&data->client->dev, "Error initializing T37\n"); | |
2677 | } | |
2678 | #else | |
2679 | static void mxt_debug_init(struct mxt_data *data) | |
2680 | { | |
2681 | } | |
2682 | #endif | |
2683 | ||
50a77c65 ND |
2684 | static int mxt_configure_objects(struct mxt_data *data, |
2685 | const struct firmware *cfg) | |
2686 | { | |
2687 | struct device *dev = &data->client->dev; | |
50a77c65 ND |
2688 | int error; |
2689 | ||
7f3884f7 ND |
2690 | error = mxt_init_t7_power_cfg(data); |
2691 | if (error) { | |
2692 | dev_err(dev, "Failed to initialize power cfg\n"); | |
2693 | return error; | |
2694 | } | |
2695 | ||
50a77c65 ND |
2696 | if (cfg) { |
2697 | error = mxt_update_cfg(data, cfg); | |
2698 | if (error) | |
2699 | dev_warn(dev, "Error %d updating config\n", error); | |
7bed6805 | 2700 | } |
4cf51c38 | 2701 | |
b23157dc ND |
2702 | if (data->multitouch) { |
2703 | error = mxt_initialize_input_device(data); | |
2704 | if (error) | |
2705 | return error; | |
2706 | } else { | |
2707 | dev_warn(dev, "No touch object detected\n"); | |
2708 | } | |
4cf51c38 | 2709 | |
d6a39404 ND |
2710 | mxt_debug_init(data); |
2711 | ||
4cf51c38 JS |
2712 | return 0; |
2713 | } | |
2714 | ||
b19fc9ec DK |
2715 | /* Firmware Version is returned as Major.Minor.Build */ |
2716 | static ssize_t mxt_fw_version_show(struct device *dev, | |
2717 | struct device_attribute *attr, char *buf) | |
2718 | { | |
2719 | struct mxt_data *data = dev_get_drvdata(dev); | |
068bdb67 | 2720 | struct mxt_info *info = data->info; |
b19fc9ec DK |
2721 | return scnprintf(buf, PAGE_SIZE, "%u.%u.%02X\n", |
2722 | info->version >> 4, info->version & 0xf, info->build); | |
2723 | } | |
2724 | ||
2725 | /* Hardware Version is returned as FamilyID.VariantID */ | |
2726 | static ssize_t mxt_hw_version_show(struct device *dev, | |
2727 | struct device_attribute *attr, char *buf) | |
2728 | { | |
2729 | struct mxt_data *data = dev_get_drvdata(dev); | |
068bdb67 | 2730 | struct mxt_info *info = data->info; |
b19fc9ec DK |
2731 | return scnprintf(buf, PAGE_SIZE, "%u.%u\n", |
2732 | info->family_id, info->variant_id); | |
2733 | } | |
2734 | ||
794eb67e DK |
2735 | static ssize_t mxt_show_instance(char *buf, int count, |
2736 | struct mxt_object *object, int instance, | |
2737 | const u8 *val) | |
2738 | { | |
2739 | int i; | |
2740 | ||
1e0c0c5b | 2741 | if (mxt_obj_instances(object) > 1) |
794eb67e DK |
2742 | count += scnprintf(buf + count, PAGE_SIZE - count, |
2743 | "Instance %u\n", instance); | |
2744 | ||
1e0c0c5b | 2745 | for (i = 0; i < mxt_obj_size(object); i++) |
794eb67e DK |
2746 | count += scnprintf(buf + count, PAGE_SIZE - count, |
2747 | "\t[%2u]: %02x (%d)\n", i, val[i], val[i]); | |
2748 | count += scnprintf(buf + count, PAGE_SIZE - count, "\n"); | |
2749 | ||
2750 | return count; | |
2751 | } | |
2752 | ||
7686b108 | 2753 | static ssize_t mxt_object_show(struct device *dev, |
4cf51c38 JS |
2754 | struct device_attribute *attr, char *buf) |
2755 | { | |
7686b108 IV |
2756 | struct mxt_data *data = dev_get_drvdata(dev); |
2757 | struct mxt_object *object; | |
4cf51c38 JS |
2758 | int count = 0; |
2759 | int i, j; | |
2760 | int error; | |
43a91d51 | 2761 | u8 *obuf; |
4cf51c38 | 2762 | |
43a91d51 DK |
2763 | /* Pre-allocate buffer large enough to hold max sized object. */ |
2764 | obuf = kmalloc(256, GFP_KERNEL); | |
2765 | if (!obuf) | |
2766 | return -ENOMEM; | |
4cf51c38 | 2767 | |
43a91d51 | 2768 | error = 0; |
068bdb67 | 2769 | for (i = 0; i < data->info->object_num; i++) { |
4cf51c38 JS |
2770 | object = data->object_table + i; |
2771 | ||
91630955 | 2772 | if (!mxt_object_readable(object->type)) |
4cf51c38 | 2773 | continue; |
4cf51c38 | 2774 | |
91630955 DK |
2775 | count += scnprintf(buf + count, PAGE_SIZE - count, |
2776 | "T%u:\n", object->type); | |
4cf51c38 | 2777 | |
1e0c0c5b DK |
2778 | for (j = 0; j < mxt_obj_instances(object); j++) { |
2779 | u16 size = mxt_obj_size(object); | |
794eb67e | 2780 | u16 addr = object->start_address + j * size; |
43a91d51 | 2781 | |
794eb67e | 2782 | error = __mxt_read_reg(data->client, addr, size, obuf); |
4cf51c38 | 2783 | if (error) |
794eb67e | 2784 | goto done; |
4cf51c38 | 2785 | |
794eb67e | 2786 | count = mxt_show_instance(buf, count, object, j, obuf); |
4cf51c38 | 2787 | } |
4cf51c38 JS |
2788 | } |
2789 | ||
794eb67e | 2790 | done: |
43a91d51 DK |
2791 | kfree(obuf); |
2792 | return error ?: count; | |
4cf51c38 JS |
2793 | } |
2794 | ||
f2ac6cb9 ND |
2795 | static int mxt_check_firmware_format(struct device *dev, |
2796 | const struct firmware *fw) | |
2797 | { | |
2798 | unsigned int pos = 0; | |
2799 | char c; | |
2800 | ||
2801 | while (pos < fw->size) { | |
2802 | c = *(fw->data + pos); | |
2803 | ||
2804 | if (c < '0' || (c > '9' && c < 'A') || c > 'F') | |
2805 | return 0; | |
2806 | ||
2807 | pos++; | |
2808 | } | |
2809 | ||
2810 | /* | |
2811 | * To convert file try: | |
2812 | * xxd -r -p mXTXXX__APP_VX-X-XX.enc > maxtouch.fw | |
2813 | */ | |
2814 | dev_err(dev, "Aborting: firmware file must be in binary format\n"); | |
2815 | ||
2816 | return -EINVAL; | |
2817 | } | |
2818 | ||
7686b108 | 2819 | static int mxt_load_fw(struct device *dev, const char *fn) |
4cf51c38 | 2820 | { |
7686b108 | 2821 | struct mxt_data *data = dev_get_drvdata(dev); |
4cf51c38 JS |
2822 | const struct firmware *fw = NULL; |
2823 | unsigned int frame_size; | |
2824 | unsigned int pos = 0; | |
f943c74a | 2825 | unsigned int retry = 0; |
f477c758 | 2826 | unsigned int frame = 0; |
4cf51c38 JS |
2827 | int ret; |
2828 | ||
2829 | ret = request_firmware(&fw, fn, dev); | |
2830 | if (ret) { | |
2831 | dev_err(dev, "Unable to open firmware %s\n", fn); | |
2832 | return ret; | |
2833 | } | |
2834 | ||
f2ac6cb9 ND |
2835 | /* Check for incorrect enc file */ |
2836 | ret = mxt_check_firmware_format(dev, fw); | |
2837 | if (ret) | |
2838 | goto release_firmware; | |
2839 | ||
a9fdd1e6 ND |
2840 | if (!data->in_bootloader) { |
2841 | /* Change to the bootloader mode */ | |
2842 | data->in_bootloader = true; | |
d79e7e47 | 2843 | |
a9fdd1e6 ND |
2844 | ret = mxt_t6_command(data, MXT_COMMAND_RESET, |
2845 | MXT_BOOT_VALUE, false); | |
2846 | if (ret) | |
2847 | goto release_firmware; | |
a4a2ef46 | 2848 | |
a9fdd1e6 | 2849 | msleep(MXT_RESET_TIME); |
8efaa5e5 ND |
2850 | |
2851 | /* Do not need to scan since we know family ID */ | |
2852 | ret = mxt_lookup_bootloader_address(data, 0); | |
2853 | if (ret) | |
2854 | goto release_firmware; | |
58e4aeee SW |
2855 | |
2856 | mxt_free_input_device(data); | |
2857 | mxt_free_object_table(data); | |
8efaa5e5 ND |
2858 | } else { |
2859 | enable_irq(data->irq); | |
a9fdd1e6 | 2860 | } |
4cf51c38 | 2861 | |
d79e7e47 BL |
2862 | reinit_completion(&data->bl_completion); |
2863 | ||
385deb96 ND |
2864 | ret = mxt_check_bootloader(data, MXT_WAITING_BOOTLOAD_CMD, false); |
2865 | if (ret) { | |
2866 | /* Bootloader may still be unlocked from previous attempt */ | |
2867 | ret = mxt_check_bootloader(data, MXT_WAITING_FRAME_DATA, false); | |
2868 | if (ret) | |
2869 | goto disable_irq; | |
2870 | } else { | |
2871 | dev_info(dev, "Unlocking bootloader\n"); | |
4cf51c38 | 2872 | |
385deb96 | 2873 | /* Unlock bootloader */ |
8efaa5e5 | 2874 | ret = mxt_send_bootloader_cmd(data, true); |
385deb96 ND |
2875 | if (ret) |
2876 | goto disable_irq; | |
2877 | } | |
4cf51c38 JS |
2878 | |
2879 | while (pos < fw->size) { | |
385deb96 | 2880 | ret = mxt_check_bootloader(data, MXT_WAITING_FRAME_DATA, true); |
4cf51c38 | 2881 | if (ret) |
d79e7e47 | 2882 | goto disable_irq; |
4cf51c38 JS |
2883 | |
2884 | frame_size = ((*(fw->data + pos) << 8) | *(fw->data + pos + 1)); | |
2885 | ||
f943c74a | 2886 | /* Take account of CRC bytes */ |
4cf51c38 JS |
2887 | frame_size += 2; |
2888 | ||
2889 | /* Write one frame to device */ | |
f28a842d ND |
2890 | ret = mxt_bootloader_write(data, fw->data + pos, frame_size); |
2891 | if (ret) | |
2892 | goto disable_irq; | |
4cf51c38 | 2893 | |
385deb96 | 2894 | ret = mxt_check_bootloader(data, MXT_FRAME_CRC_PASS, true); |
f943c74a ND |
2895 | if (ret) { |
2896 | retry++; | |
2897 | ||
2898 | /* Back off by 20ms per retry */ | |
2899 | msleep(retry * 20); | |
4cf51c38 | 2900 | |
f943c74a ND |
2901 | if (retry > 20) { |
2902 | dev_err(dev, "Retry count exceeded\n"); | |
2903 | goto disable_irq; | |
2904 | } | |
2905 | } else { | |
2906 | retry = 0; | |
2907 | pos += frame_size; | |
f477c758 | 2908 | frame++; |
f943c74a | 2909 | } |
4cf51c38 | 2910 | |
f477c758 ND |
2911 | if (frame % 50 == 0) |
2912 | dev_dbg(dev, "Sent %d frames, %d/%zd bytes\n", | |
2913 | frame, pos, fw->size); | |
4cf51c38 JS |
2914 | } |
2915 | ||
a0434b75 | 2916 | /* Wait for flash. */ |
a4a2ef46 IV |
2917 | ret = mxt_wait_for_completion(data, &data->bl_completion, |
2918 | MXT_FW_RESET_TIME); | |
a0434b75 BL |
2919 | if (ret) |
2920 | goto disable_irq; | |
2921 | ||
f477c758 ND |
2922 | dev_dbg(dev, "Sent %d frames, %d bytes\n", frame, pos); |
2923 | ||
a0434b75 BL |
2924 | /* |
2925 | * Wait for device to reset. Some bootloader versions do not assert | |
2926 | * the CHG line after bootloading has finished, so ignore potential | |
2927 | * errors. | |
2928 | */ | |
a4a2ef46 | 2929 | mxt_wait_for_completion(data, &data->bl_completion, MXT_FW_RESET_TIME); |
a0434b75 | 2930 | |
d79e7e47 BL |
2931 | data->in_bootloader = false; |
2932 | ||
2933 | disable_irq: | |
2934 | disable_irq(data->irq); | |
a4a2ef46 | 2935 | release_firmware: |
4cf51c38 | 2936 | release_firmware(fw); |
4cf51c38 JS |
2937 | return ret; |
2938 | } | |
2939 | ||
7686b108 | 2940 | static ssize_t mxt_update_fw_store(struct device *dev, |
4cf51c38 JS |
2941 | struct device_attribute *attr, |
2942 | const char *buf, size_t count) | |
2943 | { | |
7686b108 | 2944 | struct mxt_data *data = dev_get_drvdata(dev); |
4cf51c38 JS |
2945 | int error; |
2946 | ||
7686b108 | 2947 | error = mxt_load_fw(dev, MXT_FW_NAME); |
4cf51c38 JS |
2948 | if (error) { |
2949 | dev_err(dev, "The firmware update failed(%d)\n", error); | |
2950 | count = error; | |
2951 | } else { | |
7bed6805 ND |
2952 | dev_info(dev, "The firmware update succeeded\n"); |
2953 | ||
dd24dcf5 | 2954 | error = mxt_initialize(data); |
d79e7e47 BL |
2955 | if (error) |
2956 | return error; | |
2957 | } | |
08960a07 | 2958 | |
4cf51c38 JS |
2959 | return count; |
2960 | } | |
2961 | ||
b19fc9ec DK |
2962 | static DEVICE_ATTR(fw_version, S_IRUGO, mxt_fw_version_show, NULL); |
2963 | static DEVICE_ATTR(hw_version, S_IRUGO, mxt_hw_version_show, NULL); | |
71b3e938 DK |
2964 | static DEVICE_ATTR(object, S_IRUGO, mxt_object_show, NULL); |
2965 | static DEVICE_ATTR(update_fw, S_IWUSR, NULL, mxt_update_fw_store); | |
4cf51c38 | 2966 | |
7686b108 | 2967 | static struct attribute *mxt_attrs[] = { |
b19fc9ec DK |
2968 | &dev_attr_fw_version.attr, |
2969 | &dev_attr_hw_version.attr, | |
4cf51c38 JS |
2970 | &dev_attr_object.attr, |
2971 | &dev_attr_update_fw.attr, | |
2972 | NULL | |
2973 | }; | |
2974 | ||
7686b108 IV |
2975 | static const struct attribute_group mxt_attr_group = { |
2976 | .attrs = mxt_attrs, | |
4cf51c38 JS |
2977 | }; |
2978 | ||
7686b108 | 2979 | static void mxt_start(struct mxt_data *data) |
4cf51c38 | 2980 | { |
d80808e1 | 2981 | switch (data->suspend_mode) { |
7f3884f7 ND |
2982 | case MXT_SUSPEND_T9_CTRL: |
2983 | mxt_soft_reset(data); | |
2984 | ||
2985 | /* Touch enable */ | |
2986 | /* 0x83 = SCANEN | RPTEN | ENABLE */ | |
2987 | mxt_write_object(data, | |
2988 | MXT_TOUCH_MULTI_T9, MXT_T9_CTRL, 0x83); | |
2989 | break; | |
2990 | ||
2991 | case MXT_SUSPEND_DEEP_SLEEP: | |
2992 | default: | |
2993 | mxt_set_t7_power_cfg(data, MXT_POWER_CFG_RUN); | |
2994 | ||
2995 | /* Recalibrate since chip has been in deep sleep */ | |
2996 | mxt_t6_command(data, MXT_COMMAND_CALIBRATE, 1, false); | |
2997 | break; | |
2998 | } | |
4cf51c38 JS |
2999 | } |
3000 | ||
7686b108 | 3001 | static void mxt_stop(struct mxt_data *data) |
4cf51c38 | 3002 | { |
d80808e1 | 3003 | switch (data->suspend_mode) { |
7f3884f7 ND |
3004 | case MXT_SUSPEND_T9_CTRL: |
3005 | /* Touch disable */ | |
3006 | mxt_write_object(data, | |
3007 | MXT_TOUCH_MULTI_T9, MXT_T9_CTRL, 0); | |
3008 | break; | |
3009 | ||
3010 | case MXT_SUSPEND_DEEP_SLEEP: | |
3011 | default: | |
3012 | mxt_set_t7_power_cfg(data, MXT_POWER_CFG_DEEPSLEEP); | |
3013 | break; | |
3014 | } | |
4cf51c38 JS |
3015 | } |
3016 | ||
7686b108 | 3017 | static int mxt_input_open(struct input_dev *dev) |
4cf51c38 | 3018 | { |
7686b108 | 3019 | struct mxt_data *data = input_get_drvdata(dev); |
4cf51c38 | 3020 | |
7686b108 | 3021 | mxt_start(data); |
4cf51c38 JS |
3022 | |
3023 | return 0; | |
3024 | } | |
3025 | ||
7686b108 | 3026 | static void mxt_input_close(struct input_dev *dev) |
4cf51c38 | 3027 | { |
7686b108 | 3028 | struct mxt_data *data = input_get_drvdata(dev); |
4cf51c38 | 3029 | |
7686b108 | 3030 | mxt_stop(data); |
4cf51c38 JS |
3031 | } |
3032 | ||
96a938aa | 3033 | static int mxt_parse_device_properties(struct mxt_data *data) |
78188be3 | 3034 | { |
93afb1d6 | 3035 | static const char keymap_property[] = "linux,gpio-keymap"; |
96a938aa | 3036 | struct device *dev = &data->client->dev; |
78188be3 | 3037 | u32 *keymap; |
93afb1d6 DT |
3038 | int n_keys; |
3039 | int error; | |
78188be3 | 3040 | |
96a938aa | 3041 | if (device_property_present(dev, keymap_property)) { |
9ed05c94 | 3042 | n_keys = device_property_count_u32(dev, keymap_property); |
93afb1d6 DT |
3043 | if (n_keys <= 0) { |
3044 | error = n_keys < 0 ? n_keys : -EINVAL; | |
96a938aa | 3045 | dev_err(dev, "invalid/malformed '%s' property: %d\n", |
93afb1d6 | 3046 | keymap_property, error); |
96a938aa | 3047 | return error; |
93afb1d6 | 3048 | } |
78188be3 | 3049 | |
96a938aa | 3050 | keymap = devm_kmalloc_array(dev, n_keys, sizeof(*keymap), |
93afb1d6 | 3051 | GFP_KERNEL); |
78188be3 | 3052 | if (!keymap) |
96a938aa | 3053 | return -ENOMEM; |
78188be3 | 3054 | |
96a938aa | 3055 | error = device_property_read_u32_array(dev, keymap_property, |
93afb1d6 DT |
3056 | keymap, n_keys); |
3057 | if (error) { | |
96a938aa | 3058 | dev_err(dev, "failed to parse '%s' property: %d\n", |
93afb1d6 | 3059 | keymap_property, error); |
96a938aa | 3060 | return error; |
93afb1d6 | 3061 | } |
78188be3 | 3062 | |
96a938aa DT |
3063 | data->t19_keymap = keymap; |
3064 | data->t19_num_keys = n_keys; | |
78188be3 SW |
3065 | } |
3066 | ||
96a938aa | 3067 | return 0; |
78188be3 | 3068 | } |
4f8d8088 | 3069 | |
d80808e1 DT |
3070 | static const struct dmi_system_id chromebook_T9_suspend_dmi[] = { |
3071 | { | |
3072 | .matches = { | |
3073 | DMI_MATCH(DMI_SYS_VENDOR, "GOOGLE"), | |
3074 | DMI_MATCH(DMI_PRODUCT_NAME, "Link"), | |
3075 | }, | |
3076 | }, | |
3077 | { | |
3078 | .matches = { | |
3079 | DMI_MATCH(DMI_PRODUCT_NAME, "Peppy"), | |
3080 | }, | |
3081 | }, | |
3082 | { } | |
3083 | }; | |
3084 | ||
78188be3 | 3085 | static int mxt_probe(struct i2c_client *client, const struct i2c_device_id *id) |
4cf51c38 | 3086 | { |
7686b108 | 3087 | struct mxt_data *data; |
4cf51c38 JS |
3088 | int error; |
3089 | ||
7cf432bf DT |
3090 | /* |
3091 | * Ignore devices that do not have device properties attached to | |
3092 | * them, as we need help determining whether we are dealing with | |
3093 | * touch screen or touchpad. | |
3094 | * | |
3095 | * So far on x86 the only users of Atmel touch controllers are | |
3096 | * Chromebooks, and chromeos_laptop driver will ensure that | |
3097 | * necessary properties are provided (if firmware does not do that). | |
3098 | */ | |
3099 | if (!device_property_present(&client->dev, "compatible")) | |
3100 | return -ENXIO; | |
3101 | ||
96a938aa DT |
3102 | /* |
3103 | * Ignore ACPI devices representing bootloader mode. | |
3104 | * | |
3105 | * This is a bit of a hack: Google Chromebook BIOS creates ACPI | |
3106 | * devices for both application and bootloader modes, but we are | |
3107 | * interested in application mode only (if device is in bootloader | |
3108 | * mode we'll end up switching into application anyway). So far | |
3109 | * application mode addresses were all above 0x40, so we'll use it | |
3110 | * as a threshold. | |
3111 | */ | |
3112 | if (ACPI_COMPANION(&client->dev) && client->addr < 0x40) | |
3113 | return -ENXIO; | |
4cf51c38 | 3114 | |
8cc8446b SR |
3115 | data = devm_kzalloc(&client->dev, sizeof(struct mxt_data), GFP_KERNEL); |
3116 | if (!data) | |
7a53d609 | 3117 | return -ENOMEM; |
4cf51c38 | 3118 | |
ec02ac2b DK |
3119 | snprintf(data->phys, sizeof(data->phys), "i2c-%u-%04x/input0", |
3120 | client->adapter->nr, client->addr); | |
22dfab7f | 3121 | |
910d8051 | 3122 | data->client = client; |
910d8051 | 3123 | data->irq = client->irq; |
7a53d609 | 3124 | i2c_set_clientdata(client, data); |
910d8051 | 3125 | |
d79e7e47 | 3126 | init_completion(&data->bl_completion); |
a4a2ef46 | 3127 | init_completion(&data->reset_completion); |
c3f78043 | 3128 | init_completion(&data->crc_completion); |
d79e7e47 | 3129 | |
d80808e1 DT |
3130 | data->suspend_mode = dmi_check_system(chromebook_T9_suspend_dmi) ? |
3131 | MXT_SUSPEND_T9_CTRL : MXT_SUSPEND_DEEP_SLEEP; | |
3132 | ||
96a938aa DT |
3133 | error = mxt_parse_device_properties(data); |
3134 | if (error) | |
3135 | return error; | |
3136 | ||
f657b00d SR |
3137 | data->reset_gpio = devm_gpiod_get_optional(&client->dev, |
3138 | "reset", GPIOD_OUT_LOW); | |
3139 | if (IS_ERR(data->reset_gpio)) { | |
3140 | error = PTR_ERR(data->reset_gpio); | |
3141 | dev_err(&client->dev, "Failed to get reset gpio: %d\n", error); | |
3142 | return error; | |
3143 | } | |
3144 | ||
8cc8446b | 3145 | error = devm_request_threaded_irq(&client->dev, client->irq, |
96a938aa | 3146 | NULL, mxt_interrupt, IRQF_ONESHOT, |
8cc8446b | 3147 | client->name, data); |
dd24dcf5 ND |
3148 | if (error) { |
3149 | dev_err(&client->dev, "Failed to register interrupt\n"); | |
8cc8446b | 3150 | return error; |
dd24dcf5 ND |
3151 | } |
3152 | ||
ca1cd36c SR |
3153 | disable_irq(client->irq); |
3154 | ||
f657b00d | 3155 | if (data->reset_gpio) { |
ca1cd36c | 3156 | msleep(MXT_RESET_GPIO_TIME); |
f657b00d | 3157 | gpiod_set_value(data->reset_gpio, 1); |
ca1cd36c | 3158 | msleep(MXT_RESET_INVALID_CHG); |
f657b00d SR |
3159 | } |
3160 | ||
cb159115 DK |
3161 | error = mxt_initialize(data); |
3162 | if (error) | |
8cc8446b | 3163 | return error; |
4cf51c38 | 3164 | |
7686b108 | 3165 | error = sysfs_create_group(&client->dev.kobj, &mxt_attr_group); |
7bed6805 ND |
3166 | if (error) { |
3167 | dev_err(&client->dev, "Failure %d creating sysfs group\n", | |
3168 | error); | |
7a53d609 | 3169 | goto err_free_object; |
7bed6805 | 3170 | } |
4cf51c38 JS |
3171 | |
3172 | return 0; | |
3173 | ||
4cf51c38 | 3174 | err_free_object: |
58e4aeee | 3175 | mxt_free_input_device(data); |
5f3f9bc2 | 3176 | mxt_free_object_table(data); |
4cf51c38 JS |
3177 | return error; |
3178 | } | |
3179 | ||
e2619cf7 | 3180 | static int mxt_remove(struct i2c_client *client) |
4cf51c38 | 3181 | { |
7686b108 | 3182 | struct mxt_data *data = i2c_get_clientdata(client); |
4cf51c38 | 3183 | |
8cc8446b | 3184 | disable_irq(data->irq); |
7686b108 | 3185 | sysfs_remove_group(&client->dev.kobj, &mxt_attr_group); |
58e4aeee | 3186 | mxt_free_input_device(data); |
5f3f9bc2 | 3187 | mxt_free_object_table(data); |
4cf51c38 JS |
3188 | |
3189 | return 0; | |
3190 | } | |
3191 | ||
02b6a58b | 3192 | static int __maybe_unused mxt_suspend(struct device *dev) |
4cf51c38 | 3193 | { |
8b5fce06 | 3194 | struct i2c_client *client = to_i2c_client(dev); |
7686b108 | 3195 | struct mxt_data *data = i2c_get_clientdata(client); |
4cf51c38 JS |
3196 | struct input_dev *input_dev = data->input_dev; |
3197 | ||
50fabb02 PX |
3198 | if (!input_dev) |
3199 | return 0; | |
3200 | ||
4cf51c38 JS |
3201 | mutex_lock(&input_dev->mutex); |
3202 | ||
3203 | if (input_dev->users) | |
7686b108 | 3204 | mxt_stop(data); |
4cf51c38 JS |
3205 | |
3206 | mutex_unlock(&input_dev->mutex); | |
3207 | ||
463fa44e EG |
3208 | disable_irq(data->irq); |
3209 | ||
4cf51c38 JS |
3210 | return 0; |
3211 | } | |
3212 | ||
02b6a58b | 3213 | static int __maybe_unused mxt_resume(struct device *dev) |
4cf51c38 | 3214 | { |
8b5fce06 | 3215 | struct i2c_client *client = to_i2c_client(dev); |
7686b108 | 3216 | struct mxt_data *data = i2c_get_clientdata(client); |
4cf51c38 JS |
3217 | struct input_dev *input_dev = data->input_dev; |
3218 | ||
50fabb02 PX |
3219 | if (!input_dev) |
3220 | return 0; | |
3221 | ||
463fa44e EG |
3222 | enable_irq(data->irq); |
3223 | ||
4cf51c38 JS |
3224 | mutex_lock(&input_dev->mutex); |
3225 | ||
3226 | if (input_dev->users) | |
7686b108 | 3227 | mxt_start(data); |
4cf51c38 JS |
3228 | |
3229 | mutex_unlock(&input_dev->mutex); | |
3230 | ||
3231 | return 0; | |
3232 | } | |
4cf51c38 | 3233 | |
3a73c816 DK |
3234 | static SIMPLE_DEV_PM_OPS(mxt_pm_ops, mxt_suspend, mxt_resume); |
3235 | ||
78188be3 SW |
3236 | static const struct of_device_id mxt_of_match[] = { |
3237 | { .compatible = "atmel,maxtouch", }, | |
f6eeb9e5 JMC |
3238 | /* Compatibles listed below are deprecated */ |
3239 | { .compatible = "atmel,qt602240_ts", }, | |
3240 | { .compatible = "atmel,atmel_mxt_ts", }, | |
3241 | { .compatible = "atmel,atmel_mxt_tp", }, | |
3242 | { .compatible = "atmel,mXT224", }, | |
78188be3 SW |
3243 | {}, |
3244 | }; | |
3245 | MODULE_DEVICE_TABLE(of, mxt_of_match); | |
3246 | ||
4f8d8088 DT |
3247 | #ifdef CONFIG_ACPI |
3248 | static const struct acpi_device_id mxt_acpi_id[] = { | |
3249 | { "ATML0000", 0 }, /* Touchpad */ | |
3250 | { "ATML0001", 0 }, /* Touchscreen */ | |
3251 | { } | |
3252 | }; | |
3253 | MODULE_DEVICE_TABLE(acpi, mxt_acpi_id); | |
3254 | #endif | |
3255 | ||
7686b108 | 3256 | static const struct i2c_device_id mxt_id[] = { |
4cf51c38 | 3257 | { "qt602240_ts", 0 }, |
7686b108 | 3258 | { "atmel_mxt_ts", 0 }, |
22dfab7f | 3259 | { "atmel_mxt_tp", 0 }, |
b7d21058 | 3260 | { "maxtouch", 0 }, |
46ee2a05 | 3261 | { "mXT224", 0 }, |
4cf51c38 JS |
3262 | { } |
3263 | }; | |
7686b108 | 3264 | MODULE_DEVICE_TABLE(i2c, mxt_id); |
4cf51c38 | 3265 | |
7686b108 | 3266 | static struct i2c_driver mxt_driver = { |
4cf51c38 | 3267 | .driver = { |
7686b108 | 3268 | .name = "atmel_mxt_ts", |
96a938aa | 3269 | .of_match_table = mxt_of_match, |
4f8d8088 | 3270 | .acpi_match_table = ACPI_PTR(mxt_acpi_id), |
7686b108 | 3271 | .pm = &mxt_pm_ops, |
4cf51c38 | 3272 | }, |
7686b108 | 3273 | .probe = mxt_probe, |
1cb0aa88 | 3274 | .remove = mxt_remove, |
7686b108 | 3275 | .id_table = mxt_id, |
4cf51c38 JS |
3276 | }; |
3277 | ||
1b92c1cf | 3278 | module_i2c_driver(mxt_driver); |
4cf51c38 JS |
3279 | |
3280 | /* Module information */ | |
3281 | MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>"); | |
7686b108 | 3282 | MODULE_DESCRIPTION("Atmel maXTouch Touchscreen driver"); |
4cf51c38 | 3283 | MODULE_LICENSE("GPL"); |