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2b6a321d AD |
1 | /* |
2 | * Copyright (c) 2011-2016 Synaptics Incorporated | |
3 | * Copyright (c) 2011 Unixphere | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify it | |
6 | * under the terms of the GNU General Public License version 2 as published by | |
7 | * the Free Software Foundation. | |
8 | */ | |
9 | ||
10 | #include <linux/kernel.h> | |
2b6a321d AD |
11 | #include <linux/rmi.h> |
12 | #include <linux/slab.h> | |
13 | #include <linux/uaccess.h> | |
14 | #include <linux/of.h> | |
ce363f0d | 15 | #include <asm/unaligned.h> |
2b6a321d AD |
16 | #include "rmi_driver.h" |
17 | ||
18 | #define RMI_PRODUCT_ID_LENGTH 10 | |
19 | #define RMI_PRODUCT_INFO_LENGTH 2 | |
20 | ||
21 | #define RMI_DATE_CODE_LENGTH 3 | |
22 | ||
23 | #define PRODUCT_ID_OFFSET 0x10 | |
24 | #define PRODUCT_INFO_OFFSET 0x1E | |
25 | ||
26 | ||
27 | /* Force a firmware reset of the sensor */ | |
28 | #define RMI_F01_CMD_DEVICE_RESET 1 | |
29 | ||
30 | /* Various F01_RMI_QueryX bits */ | |
31 | ||
32 | #define RMI_F01_QRY1_CUSTOM_MAP BIT(0) | |
33 | #define RMI_F01_QRY1_NON_COMPLIANT BIT(1) | |
34 | #define RMI_F01_QRY1_HAS_LTS BIT(2) | |
35 | #define RMI_F01_QRY1_HAS_SENSOR_ID BIT(3) | |
36 | #define RMI_F01_QRY1_HAS_CHARGER_INP BIT(4) | |
37 | #define RMI_F01_QRY1_HAS_ADJ_DOZE BIT(5) | |
38 | #define RMI_F01_QRY1_HAS_ADJ_DOZE_HOFF BIT(6) | |
39 | #define RMI_F01_QRY1_HAS_QUERY42 BIT(7) | |
40 | ||
41 | #define RMI_F01_QRY5_YEAR_MASK 0x1f | |
42 | #define RMI_F01_QRY6_MONTH_MASK 0x0f | |
43 | #define RMI_F01_QRY7_DAY_MASK 0x1f | |
44 | ||
45 | #define RMI_F01_QRY2_PRODINFO_MASK 0x7f | |
46 | ||
47 | #define RMI_F01_BASIC_QUERY_LEN 21 /* From Query 00 through 20 */ | |
48 | ||
49 | struct f01_basic_properties { | |
50 | u8 manufacturer_id; | |
51 | bool has_lts; | |
52 | bool has_adjustable_doze; | |
53 | bool has_adjustable_doze_holdoff; | |
54 | char dom[11]; /* YYYY/MM/DD + '\0' */ | |
55 | u8 product_id[RMI_PRODUCT_ID_LENGTH + 1]; | |
56 | u16 productinfo; | |
57 | u32 firmware_id; | |
ce363f0d | 58 | u32 package_id; |
2b6a321d AD |
59 | }; |
60 | ||
61 | /* F01 device status bits */ | |
62 | ||
63 | /* Most recent device status event */ | |
64 | #define RMI_F01_STATUS_CODE(status) ((status) & 0x0f) | |
65 | /* The device has lost its configuration for some reason. */ | |
66 | #define RMI_F01_STATUS_UNCONFIGURED(status) (!!((status) & 0x80)) | |
29fd0ec2 ND |
67 | /* The device is in bootloader mode */ |
68 | #define RMI_F01_STATUS_BOOTLOADER(status) ((status) & 0x40) | |
2b6a321d AD |
69 | |
70 | /* Control register bits */ | |
71 | ||
72 | /* | |
73 | * Sleep mode controls power management on the device and affects all | |
74 | * functions of the device. | |
75 | */ | |
76 | #define RMI_F01_CTRL0_SLEEP_MODE_MASK 0x03 | |
77 | ||
78 | #define RMI_SLEEP_MODE_NORMAL 0x00 | |
79 | #define RMI_SLEEP_MODE_SENSOR_SLEEP 0x01 | |
80 | #define RMI_SLEEP_MODE_RESERVED0 0x02 | |
81 | #define RMI_SLEEP_MODE_RESERVED1 0x03 | |
82 | ||
83 | /* | |
84 | * This bit disables whatever sleep mode may be selected by the sleep_mode | |
85 | * field and forces the device to run at full power without sleeping. | |
86 | */ | |
e9000b79 | 87 | #define RMI_F01_CTRL0_NOSLEEP_BIT BIT(2) |
2b6a321d AD |
88 | |
89 | /* | |
90 | * When this bit is set, the touch controller employs a noise-filtering | |
91 | * algorithm designed for use with a connected battery charger. | |
92 | */ | |
e9000b79 | 93 | #define RMI_F01_CTRL0_CHARGER_BIT BIT(5) |
2b6a321d AD |
94 | |
95 | /* | |
96 | * Sets the report rate for the device. The effect of this setting is | |
97 | * highly product dependent. Check the spec sheet for your particular | |
98 | * touch sensor. | |
99 | */ | |
e9000b79 | 100 | #define RMI_F01_CTRL0_REPORTRATE_BIT BIT(6) |
2b6a321d AD |
101 | |
102 | /* | |
103 | * Written by the host as an indicator that the device has been | |
104 | * successfully configured. | |
105 | */ | |
e9000b79 | 106 | #define RMI_F01_CTRL0_CONFIGURED_BIT BIT(7) |
2b6a321d AD |
107 | |
108 | /** | |
109 | * @ctrl0 - see the bit definitions above. | |
110 | * @doze_interval - controls the interval between checks for finger presence | |
111 | * when the touch sensor is in doze mode, in units of 10ms. | |
112 | * @wakeup_threshold - controls the capacitance threshold at which the touch | |
113 | * sensor will decide to wake up from that low power state. | |
114 | * @doze_holdoff - controls how long the touch sensor waits after the last | |
115 | * finger lifts before entering the doze state, in units of 100ms. | |
116 | */ | |
117 | struct f01_device_control { | |
118 | u8 ctrl0; | |
119 | u8 doze_interval; | |
120 | u8 wakeup_threshold; | |
121 | u8 doze_holdoff; | |
122 | }; | |
123 | ||
124 | struct f01_data { | |
125 | struct f01_basic_properties properties; | |
126 | struct f01_device_control device_control; | |
127 | ||
128 | u16 doze_interval_addr; | |
129 | u16 wakeup_threshold_addr; | |
130 | u16 doze_holdoff_addr; | |
131 | ||
132 | bool suspended; | |
133 | bool old_nosleep; | |
134 | ||
135 | unsigned int num_of_irq_regs; | |
136 | }; | |
137 | ||
138 | static int rmi_f01_read_properties(struct rmi_device *rmi_dev, | |
139 | u16 query_base_addr, | |
140 | struct f01_basic_properties *props) | |
141 | { | |
142 | u8 queries[RMI_F01_BASIC_QUERY_LEN]; | |
143 | int ret; | |
144 | int query_offset = query_base_addr; | |
145 | bool has_ds4_queries = false; | |
146 | bool has_query42 = false; | |
147 | bool has_sensor_id = false; | |
148 | bool has_package_id_query = false; | |
149 | bool has_build_id_query = false; | |
150 | u16 prod_info_addr; | |
151 | u8 ds4_query_len; | |
152 | ||
153 | ret = rmi_read_block(rmi_dev, query_offset, | |
154 | queries, RMI_F01_BASIC_QUERY_LEN); | |
155 | if (ret) { | |
156 | dev_err(&rmi_dev->dev, | |
157 | "Failed to read device query registers: %d\n", ret); | |
158 | return ret; | |
159 | } | |
160 | ||
161 | prod_info_addr = query_offset + 17; | |
162 | query_offset += RMI_F01_BASIC_QUERY_LEN; | |
163 | ||
164 | /* Now parse what we got */ | |
165 | props->manufacturer_id = queries[0]; | |
166 | ||
167 | props->has_lts = queries[1] & RMI_F01_QRY1_HAS_LTS; | |
168 | props->has_adjustable_doze = | |
169 | queries[1] & RMI_F01_QRY1_HAS_ADJ_DOZE; | |
170 | props->has_adjustable_doze_holdoff = | |
171 | queries[1] & RMI_F01_QRY1_HAS_ADJ_DOZE_HOFF; | |
172 | has_query42 = queries[1] & RMI_F01_QRY1_HAS_QUERY42; | |
173 | has_sensor_id = queries[1] & RMI_F01_QRY1_HAS_SENSOR_ID; | |
174 | ||
175 | snprintf(props->dom, sizeof(props->dom), "20%02d/%02d/%02d", | |
176 | queries[5] & RMI_F01_QRY5_YEAR_MASK, | |
177 | queries[6] & RMI_F01_QRY6_MONTH_MASK, | |
178 | queries[7] & RMI_F01_QRY7_DAY_MASK); | |
179 | ||
180 | memcpy(props->product_id, &queries[11], | |
181 | RMI_PRODUCT_ID_LENGTH); | |
182 | props->product_id[RMI_PRODUCT_ID_LENGTH] = '\0'; | |
183 | ||
184 | props->productinfo = | |
185 | ((queries[2] & RMI_F01_QRY2_PRODINFO_MASK) << 7) | | |
186 | (queries[3] & RMI_F01_QRY2_PRODINFO_MASK); | |
187 | ||
188 | if (has_sensor_id) | |
189 | query_offset++; | |
190 | ||
191 | if (has_query42) { | |
192 | ret = rmi_read(rmi_dev, query_offset, queries); | |
193 | if (ret) { | |
194 | dev_err(&rmi_dev->dev, | |
195 | "Failed to read query 42 register: %d\n", ret); | |
196 | return ret; | |
197 | } | |
198 | ||
199 | has_ds4_queries = !!(queries[0] & BIT(0)); | |
200 | query_offset++; | |
201 | } | |
202 | ||
203 | if (has_ds4_queries) { | |
204 | ret = rmi_read(rmi_dev, query_offset, &ds4_query_len); | |
205 | if (ret) { | |
206 | dev_err(&rmi_dev->dev, | |
207 | "Failed to read DS4 queries length: %d\n", ret); | |
208 | return ret; | |
209 | } | |
210 | query_offset++; | |
211 | ||
212 | if (ds4_query_len > 0) { | |
213 | ret = rmi_read(rmi_dev, query_offset, queries); | |
214 | if (ret) { | |
215 | dev_err(&rmi_dev->dev, | |
216 | "Failed to read DS4 queries: %d\n", | |
217 | ret); | |
218 | return ret; | |
219 | } | |
220 | ||
221 | has_package_id_query = !!(queries[0] & BIT(0)); | |
222 | has_build_id_query = !!(queries[0] & BIT(1)); | |
223 | } | |
224 | ||
ce363f0d ND |
225 | if (has_package_id_query) { |
226 | ret = rmi_read_block(rmi_dev, prod_info_addr, | |
227 | queries, sizeof(__le64)); | |
228 | if (ret) { | |
229 | dev_err(&rmi_dev->dev, | |
230 | "Failed to read package info: %d\n", | |
231 | ret); | |
232 | return ret; | |
233 | } | |
234 | ||
235 | props->package_id = get_unaligned_le64(queries); | |
2b6a321d | 236 | prod_info_addr++; |
ce363f0d | 237 | } |
2b6a321d AD |
238 | |
239 | if (has_build_id_query) { | |
240 | ret = rmi_read_block(rmi_dev, prod_info_addr, queries, | |
241 | 3); | |
242 | if (ret) { | |
243 | dev_err(&rmi_dev->dev, | |
244 | "Failed to read product info: %d\n", | |
245 | ret); | |
246 | return ret; | |
247 | } | |
248 | ||
249 | props->firmware_id = queries[1] << 8 | queries[0]; | |
250 | props->firmware_id += queries[2] * 65536; | |
251 | } | |
252 | } | |
253 | ||
254 | return 0; | |
255 | } | |
256 | ||
ce363f0d | 257 | const char *rmi_f01_get_product_ID(struct rmi_function *fn) |
2b6a321d AD |
258 | { |
259 | struct f01_data *f01 = dev_get_drvdata(&fn->dev); | |
260 | ||
261 | return f01->properties.product_id; | |
262 | } | |
263 | ||
ce363f0d ND |
264 | static ssize_t rmi_driver_manufacturer_id_show(struct device *dev, |
265 | struct device_attribute *dattr, | |
266 | char *buf) | |
267 | { | |
268 | struct rmi_driver_data *data = dev_get_drvdata(dev); | |
269 | struct f01_data *f01 = dev_get_drvdata(&data->f01_container->dev); | |
270 | ||
271 | return scnprintf(buf, PAGE_SIZE, "%d\n", | |
272 | f01->properties.manufacturer_id); | |
273 | } | |
274 | ||
275 | static DEVICE_ATTR(manufacturer_id, 0444, | |
276 | rmi_driver_manufacturer_id_show, NULL); | |
277 | ||
278 | static ssize_t rmi_driver_dom_show(struct device *dev, | |
279 | struct device_attribute *dattr, char *buf) | |
280 | { | |
281 | struct rmi_driver_data *data = dev_get_drvdata(dev); | |
282 | struct f01_data *f01 = dev_get_drvdata(&data->f01_container->dev); | |
283 | ||
284 | return scnprintf(buf, PAGE_SIZE, "%s\n", f01->properties.dom); | |
285 | } | |
286 | ||
287 | static DEVICE_ATTR(date_of_manufacture, 0444, rmi_driver_dom_show, NULL); | |
288 | ||
289 | static ssize_t rmi_driver_product_id_show(struct device *dev, | |
290 | struct device_attribute *dattr, | |
291 | char *buf) | |
292 | { | |
293 | struct rmi_driver_data *data = dev_get_drvdata(dev); | |
294 | struct f01_data *f01 = dev_get_drvdata(&data->f01_container->dev); | |
295 | ||
296 | return scnprintf(buf, PAGE_SIZE, "%s\n", f01->properties.product_id); | |
297 | } | |
298 | ||
299 | static DEVICE_ATTR(product_id, 0444, rmi_driver_product_id_show, NULL); | |
300 | ||
301 | static ssize_t rmi_driver_firmware_id_show(struct device *dev, | |
302 | struct device_attribute *dattr, | |
303 | char *buf) | |
304 | { | |
305 | struct rmi_driver_data *data = dev_get_drvdata(dev); | |
306 | struct f01_data *f01 = dev_get_drvdata(&data->f01_container->dev); | |
307 | ||
308 | return scnprintf(buf, PAGE_SIZE, "%d\n", f01->properties.firmware_id); | |
309 | } | |
310 | ||
311 | static DEVICE_ATTR(firmware_id, 0444, rmi_driver_firmware_id_show, NULL); | |
312 | ||
313 | static ssize_t rmi_driver_package_id_show(struct device *dev, | |
314 | struct device_attribute *dattr, | |
315 | char *buf) | |
316 | { | |
317 | struct rmi_driver_data *data = dev_get_drvdata(dev); | |
318 | struct f01_data *f01 = dev_get_drvdata(&data->f01_container->dev); | |
319 | ||
320 | u32 package_id = f01->properties.package_id; | |
321 | ||
322 | return scnprintf(buf, PAGE_SIZE, "%04x.%04x\n", | |
323 | package_id & 0xffff, (package_id >> 16) & 0xffff); | |
324 | } | |
325 | ||
326 | static DEVICE_ATTR(package_id, 0444, rmi_driver_package_id_show, NULL); | |
327 | ||
328 | static struct attribute *rmi_f01_attrs[] = { | |
329 | &dev_attr_manufacturer_id.attr, | |
330 | &dev_attr_date_of_manufacture.attr, | |
331 | &dev_attr_product_id.attr, | |
332 | &dev_attr_firmware_id.attr, | |
333 | &dev_attr_package_id.attr, | |
334 | NULL | |
335 | }; | |
336 | ||
337 | static struct attribute_group rmi_f01_attr_group = { | |
338 | .attrs = rmi_f01_attrs, | |
339 | }; | |
340 | ||
d8a8b3ed AD |
341 | #ifdef CONFIG_OF |
342 | static int rmi_f01_of_probe(struct device *dev, | |
343 | struct rmi_device_platform_data *pdata) | |
344 | { | |
345 | int retval; | |
346 | u32 val; | |
347 | ||
348 | retval = rmi_of_property_read_u32(dev, | |
349 | (u32 *)&pdata->power_management.nosleep, | |
350 | "syna,nosleep-mode", 1); | |
351 | if (retval) | |
352 | return retval; | |
353 | ||
354 | retval = rmi_of_property_read_u32(dev, &val, | |
355 | "syna,wakeup-threshold", 1); | |
356 | if (retval) | |
357 | return retval; | |
358 | ||
359 | pdata->power_management.wakeup_threshold = val; | |
360 | ||
361 | retval = rmi_of_property_read_u32(dev, &val, | |
362 | "syna,doze-holdoff-ms", 1); | |
363 | if (retval) | |
364 | return retval; | |
365 | ||
366 | pdata->power_management.doze_holdoff = val * 100; | |
367 | ||
368 | retval = rmi_of_property_read_u32(dev, &val, | |
369 | "syna,doze-interval-ms", 1); | |
370 | if (retval) | |
371 | return retval; | |
372 | ||
373 | pdata->power_management.doze_interval = val / 10; | |
374 | ||
375 | return 0; | |
376 | } | |
377 | #else | |
378 | static inline int rmi_f01_of_probe(struct device *dev, | |
379 | struct rmi_device_platform_data *pdata) | |
380 | { | |
381 | return -ENODEV; | |
382 | } | |
383 | #endif | |
384 | ||
2b6a321d AD |
385 | static int rmi_f01_probe(struct rmi_function *fn) |
386 | { | |
387 | struct rmi_device *rmi_dev = fn->rmi_dev; | |
388 | struct rmi_driver_data *driver_data = dev_get_drvdata(&rmi_dev->dev); | |
389 | struct rmi_device_platform_data *pdata = rmi_get_platform_data(rmi_dev); | |
390 | struct f01_data *f01; | |
391 | int error; | |
392 | u16 ctrl_base_addr = fn->fd.control_base_addr; | |
393 | u8 device_status; | |
394 | u8 temp; | |
395 | ||
d8a8b3ed AD |
396 | if (fn->dev.of_node) { |
397 | error = rmi_f01_of_probe(&fn->dev, pdata); | |
398 | if (error) | |
399 | return error; | |
400 | } | |
401 | ||
2b6a321d AD |
402 | f01 = devm_kzalloc(&fn->dev, sizeof(struct f01_data), GFP_KERNEL); |
403 | if (!f01) | |
404 | return -ENOMEM; | |
405 | ||
406 | f01->num_of_irq_regs = driver_data->num_of_irq_regs; | |
407 | ||
408 | /* | |
409 | * Set the configured bit and (optionally) other important stuff | |
410 | * in the device control register. | |
411 | */ | |
412 | ||
413 | error = rmi_read(rmi_dev, fn->fd.control_base_addr, | |
414 | &f01->device_control.ctrl0); | |
415 | if (error) { | |
416 | dev_err(&fn->dev, "Failed to read F01 control: %d\n", error); | |
417 | return error; | |
418 | } | |
419 | ||
420 | switch (pdata->power_management.nosleep) { | |
2775e523 | 421 | case RMI_REG_STATE_DEFAULT: |
2b6a321d | 422 | break; |
2775e523 | 423 | case RMI_REG_STATE_OFF: |
e9000b79 | 424 | f01->device_control.ctrl0 &= ~RMI_F01_CTRL0_NOSLEEP_BIT; |
2b6a321d | 425 | break; |
2775e523 | 426 | case RMI_REG_STATE_ON: |
e9000b79 | 427 | f01->device_control.ctrl0 |= RMI_F01_CTRL0_NOSLEEP_BIT; |
2b6a321d AD |
428 | break; |
429 | } | |
430 | ||
431 | /* | |
432 | * Sleep mode might be set as a hangover from a system crash or | |
433 | * reboot without power cycle. If so, clear it so the sensor | |
434 | * is certain to function. | |
435 | */ | |
436 | if ((f01->device_control.ctrl0 & RMI_F01_CTRL0_SLEEP_MODE_MASK) != | |
437 | RMI_SLEEP_MODE_NORMAL) { | |
438 | dev_warn(&fn->dev, | |
439 | "WARNING: Non-zero sleep mode found. Clearing...\n"); | |
440 | f01->device_control.ctrl0 &= ~RMI_F01_CTRL0_SLEEP_MODE_MASK; | |
441 | } | |
442 | ||
e9000b79 | 443 | f01->device_control.ctrl0 |= RMI_F01_CTRL0_CONFIGURED_BIT; |
2b6a321d AD |
444 | |
445 | error = rmi_write(rmi_dev, fn->fd.control_base_addr, | |
446 | f01->device_control.ctrl0); | |
447 | if (error) { | |
448 | dev_err(&fn->dev, "Failed to write F01 control: %d\n", error); | |
449 | return error; | |
450 | } | |
451 | ||
452 | /* Dummy read in order to clear irqs */ | |
453 | error = rmi_read(rmi_dev, fn->fd.data_base_addr + 1, &temp); | |
454 | if (error < 0) { | |
455 | dev_err(&fn->dev, "Failed to read Interrupt Status.\n"); | |
456 | return error; | |
457 | } | |
458 | ||
459 | error = rmi_f01_read_properties(rmi_dev, fn->fd.query_base_addr, | |
460 | &f01->properties); | |
461 | if (error < 0) { | |
462 | dev_err(&fn->dev, "Failed to read F01 properties.\n"); | |
463 | return error; | |
464 | } | |
465 | ||
466 | dev_info(&fn->dev, "found RMI device, manufacturer: %s, product: %s, fw id: %d\n", | |
467 | f01->properties.manufacturer_id == 1 ? "Synaptics" : "unknown", | |
468 | f01->properties.product_id, f01->properties.firmware_id); | |
469 | ||
470 | /* Advance to interrupt control registers, then skip over them. */ | |
471 | ctrl_base_addr++; | |
472 | ctrl_base_addr += f01->num_of_irq_regs; | |
473 | ||
474 | /* read control register */ | |
475 | if (f01->properties.has_adjustable_doze) { | |
476 | f01->doze_interval_addr = ctrl_base_addr; | |
477 | ctrl_base_addr++; | |
478 | ||
479 | if (pdata->power_management.doze_interval) { | |
480 | f01->device_control.doze_interval = | |
481 | pdata->power_management.doze_interval; | |
482 | error = rmi_write(rmi_dev, f01->doze_interval_addr, | |
483 | f01->device_control.doze_interval); | |
484 | if (error) { | |
485 | dev_err(&fn->dev, | |
486 | "Failed to configure F01 doze interval register: %d\n", | |
487 | error); | |
488 | return error; | |
489 | } | |
490 | } else { | |
491 | error = rmi_read(rmi_dev, f01->doze_interval_addr, | |
492 | &f01->device_control.doze_interval); | |
493 | if (error) { | |
494 | dev_err(&fn->dev, | |
495 | "Failed to read F01 doze interval register: %d\n", | |
496 | error); | |
497 | return error; | |
498 | } | |
499 | } | |
500 | ||
501 | f01->wakeup_threshold_addr = ctrl_base_addr; | |
502 | ctrl_base_addr++; | |
503 | ||
504 | if (pdata->power_management.wakeup_threshold) { | |
505 | f01->device_control.wakeup_threshold = | |
506 | pdata->power_management.wakeup_threshold; | |
507 | error = rmi_write(rmi_dev, f01->wakeup_threshold_addr, | |
508 | f01->device_control.wakeup_threshold); | |
509 | if (error) { | |
510 | dev_err(&fn->dev, | |
511 | "Failed to configure F01 wakeup threshold register: %d\n", | |
512 | error); | |
513 | return error; | |
514 | } | |
515 | } else { | |
516 | error = rmi_read(rmi_dev, f01->wakeup_threshold_addr, | |
517 | &f01->device_control.wakeup_threshold); | |
518 | if (error < 0) { | |
519 | dev_err(&fn->dev, | |
520 | "Failed to read F01 wakeup threshold register: %d\n", | |
521 | error); | |
522 | return error; | |
523 | } | |
524 | } | |
525 | } | |
526 | ||
527 | if (f01->properties.has_lts) | |
528 | ctrl_base_addr++; | |
529 | ||
530 | if (f01->properties.has_adjustable_doze_holdoff) { | |
531 | f01->doze_holdoff_addr = ctrl_base_addr; | |
532 | ctrl_base_addr++; | |
533 | ||
534 | if (pdata->power_management.doze_holdoff) { | |
535 | f01->device_control.doze_holdoff = | |
536 | pdata->power_management.doze_holdoff; | |
537 | error = rmi_write(rmi_dev, f01->doze_holdoff_addr, | |
538 | f01->device_control.doze_holdoff); | |
539 | if (error) { | |
540 | dev_err(&fn->dev, | |
541 | "Failed to configure F01 doze holdoff register: %d\n", | |
542 | error); | |
543 | return error; | |
544 | } | |
545 | } else { | |
546 | error = rmi_read(rmi_dev, f01->doze_holdoff_addr, | |
547 | &f01->device_control.doze_holdoff); | |
548 | if (error) { | |
549 | dev_err(&fn->dev, | |
550 | "Failed to read F01 doze holdoff register: %d\n", | |
551 | error); | |
552 | return error; | |
553 | } | |
554 | } | |
555 | } | |
556 | ||
557 | error = rmi_read(rmi_dev, fn->fd.data_base_addr, &device_status); | |
558 | if (error < 0) { | |
559 | dev_err(&fn->dev, | |
560 | "Failed to read device status: %d\n", error); | |
561 | return error; | |
562 | } | |
563 | ||
564 | if (RMI_F01_STATUS_UNCONFIGURED(device_status)) { | |
565 | dev_err(&fn->dev, | |
566 | "Device was reset during configuration process, status: %#02x!\n", | |
567 | RMI_F01_STATUS_CODE(device_status)); | |
568 | return -EINVAL; | |
569 | } | |
570 | ||
571 | dev_set_drvdata(&fn->dev, f01); | |
572 | ||
ce363f0d ND |
573 | error = sysfs_create_group(&fn->rmi_dev->dev.kobj, &rmi_f01_attr_group); |
574 | if (error) | |
575 | dev_warn(&fn->dev, "Failed to create sysfs group: %d\n", error); | |
576 | ||
2b6a321d AD |
577 | return 0; |
578 | } | |
579 | ||
ce363f0d ND |
580 | static void rmi_f01_remove(struct rmi_function *fn) |
581 | { | |
582 | sysfs_remove_group(&fn->rmi_dev->dev.kobj, &rmi_f01_attr_group); | |
583 | } | |
584 | ||
2b6a321d AD |
585 | static int rmi_f01_config(struct rmi_function *fn) |
586 | { | |
587 | struct f01_data *f01 = dev_get_drvdata(&fn->dev); | |
588 | int error; | |
589 | ||
590 | error = rmi_write(fn->rmi_dev, fn->fd.control_base_addr, | |
591 | f01->device_control.ctrl0); | |
592 | if (error) { | |
593 | dev_err(&fn->dev, | |
594 | "Failed to write device_control register: %d\n", error); | |
595 | return error; | |
596 | } | |
597 | ||
598 | if (f01->properties.has_adjustable_doze) { | |
599 | error = rmi_write(fn->rmi_dev, f01->doze_interval_addr, | |
600 | f01->device_control.doze_interval); | |
601 | if (error) { | |
602 | dev_err(&fn->dev, | |
603 | "Failed to write doze interval: %d\n", error); | |
604 | return error; | |
605 | } | |
606 | ||
607 | error = rmi_write_block(fn->rmi_dev, | |
608 | f01->wakeup_threshold_addr, | |
609 | &f01->device_control.wakeup_threshold, | |
610 | sizeof(u8)); | |
611 | if (error) { | |
612 | dev_err(&fn->dev, | |
613 | "Failed to write wakeup threshold: %d\n", | |
614 | error); | |
615 | return error; | |
616 | } | |
617 | } | |
618 | ||
619 | if (f01->properties.has_adjustable_doze_holdoff) { | |
620 | error = rmi_write(fn->rmi_dev, f01->doze_holdoff_addr, | |
621 | f01->device_control.doze_holdoff); | |
622 | if (error) { | |
623 | dev_err(&fn->dev, | |
624 | "Failed to write doze holdoff: %d\n", error); | |
625 | return error; | |
626 | } | |
627 | } | |
628 | ||
629 | return 0; | |
630 | } | |
631 | ||
632 | static int rmi_f01_suspend(struct rmi_function *fn) | |
633 | { | |
634 | struct f01_data *f01 = dev_get_drvdata(&fn->dev); | |
635 | int error; | |
636 | ||
637 | f01->old_nosleep = | |
e9000b79 ND |
638 | f01->device_control.ctrl0 & RMI_F01_CTRL0_NOSLEEP_BIT; |
639 | f01->device_control.ctrl0 &= ~RMI_F01_CTRL0_NOSLEEP_BIT; | |
2b6a321d AD |
640 | |
641 | f01->device_control.ctrl0 &= ~RMI_F01_CTRL0_SLEEP_MODE_MASK; | |
642 | if (device_may_wakeup(fn->rmi_dev->xport->dev)) | |
643 | f01->device_control.ctrl0 |= RMI_SLEEP_MODE_RESERVED1; | |
644 | else | |
645 | f01->device_control.ctrl0 |= RMI_SLEEP_MODE_SENSOR_SLEEP; | |
646 | ||
647 | error = rmi_write(fn->rmi_dev, fn->fd.control_base_addr, | |
648 | f01->device_control.ctrl0); | |
649 | if (error) { | |
650 | dev_err(&fn->dev, "Failed to write sleep mode: %d.\n", error); | |
651 | if (f01->old_nosleep) | |
e9000b79 | 652 | f01->device_control.ctrl0 |= RMI_F01_CTRL0_NOSLEEP_BIT; |
2b6a321d AD |
653 | f01->device_control.ctrl0 &= ~RMI_F01_CTRL0_SLEEP_MODE_MASK; |
654 | f01->device_control.ctrl0 |= RMI_SLEEP_MODE_NORMAL; | |
655 | return error; | |
656 | } | |
657 | ||
658 | return 0; | |
659 | } | |
660 | ||
661 | static int rmi_f01_resume(struct rmi_function *fn) | |
662 | { | |
663 | struct f01_data *f01 = dev_get_drvdata(&fn->dev); | |
664 | int error; | |
665 | ||
666 | if (f01->old_nosleep) | |
e9000b79 | 667 | f01->device_control.ctrl0 |= RMI_F01_CTRL0_NOSLEEP_BIT; |
2b6a321d AD |
668 | |
669 | f01->device_control.ctrl0 &= ~RMI_F01_CTRL0_SLEEP_MODE_MASK; | |
670 | f01->device_control.ctrl0 |= RMI_SLEEP_MODE_NORMAL; | |
671 | ||
672 | error = rmi_write(fn->rmi_dev, fn->fd.control_base_addr, | |
673 | f01->device_control.ctrl0); | |
674 | if (error) { | |
675 | dev_err(&fn->dev, | |
676 | "Failed to restore normal operation: %d.\n", error); | |
677 | return error; | |
678 | } | |
679 | ||
680 | return 0; | |
681 | } | |
682 | ||
683 | static int rmi_f01_attention(struct rmi_function *fn, | |
684 | unsigned long *irq_bits) | |
685 | { | |
686 | struct rmi_device *rmi_dev = fn->rmi_dev; | |
687 | int error; | |
688 | u8 device_status; | |
689 | ||
690 | error = rmi_read(rmi_dev, fn->fd.data_base_addr, &device_status); | |
691 | if (error) { | |
692 | dev_err(&fn->dev, | |
693 | "Failed to read device status: %d.\n", error); | |
694 | return error; | |
695 | } | |
696 | ||
29fd0ec2 ND |
697 | if (RMI_F01_STATUS_BOOTLOADER(device_status)) |
698 | dev_warn(&fn->dev, | |
699 | "Device in bootloader mode, please update firmware\n"); | |
700 | ||
2b6a321d AD |
701 | if (RMI_F01_STATUS_UNCONFIGURED(device_status)) { |
702 | dev_warn(&fn->dev, "Device reset detected.\n"); | |
703 | error = rmi_dev->driver->reset_handler(rmi_dev); | |
704 | if (error) { | |
705 | dev_err(&fn->dev, "Device reset failed: %d\n", error); | |
706 | return error; | |
707 | } | |
708 | } | |
709 | ||
710 | return 0; | |
711 | } | |
712 | ||
713 | struct rmi_function_handler rmi_f01_handler = { | |
714 | .driver = { | |
715 | .name = "rmi4_f01", | |
716 | /* | |
717 | * Do not allow user unbinding F01 as it is critical | |
718 | * function. | |
719 | */ | |
720 | .suppress_bind_attrs = true, | |
721 | }, | |
722 | .func = 0x01, | |
723 | .probe = rmi_f01_probe, | |
ce363f0d | 724 | .remove = rmi_f01_remove, |
2b6a321d AD |
725 | .config = rmi_f01_config, |
726 | .attention = rmi_f01_attention, | |
727 | .suspend = rmi_f01_suspend, | |
728 | .resume = rmi_f01_resume, | |
729 | }; |