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d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
2b6a321d AD |
2 | /* |
3 | * Copyright (c) 2011-2016 Synaptics Incorporated | |
4 | * Copyright (c) 2011 Unixphere | |
2b6a321d AD |
5 | */ |
6 | ||
7 | #include <linux/kernel.h> | |
2b6a321d AD |
8 | #include <linux/rmi.h> |
9 | #include <linux/slab.h> | |
10 | #include <linux/uaccess.h> | |
11 | #include <linux/of.h> | |
ce363f0d | 12 | #include <asm/unaligned.h> |
2b6a321d AD |
13 | #include "rmi_driver.h" |
14 | ||
15 | #define RMI_PRODUCT_ID_LENGTH 10 | |
16 | #define RMI_PRODUCT_INFO_LENGTH 2 | |
17 | ||
18 | #define RMI_DATE_CODE_LENGTH 3 | |
19 | ||
20 | #define PRODUCT_ID_OFFSET 0x10 | |
21 | #define PRODUCT_INFO_OFFSET 0x1E | |
22 | ||
23 | ||
24 | /* Force a firmware reset of the sensor */ | |
25 | #define RMI_F01_CMD_DEVICE_RESET 1 | |
26 | ||
27 | /* Various F01_RMI_QueryX bits */ | |
28 | ||
29 | #define RMI_F01_QRY1_CUSTOM_MAP BIT(0) | |
30 | #define RMI_F01_QRY1_NON_COMPLIANT BIT(1) | |
31 | #define RMI_F01_QRY1_HAS_LTS BIT(2) | |
32 | #define RMI_F01_QRY1_HAS_SENSOR_ID BIT(3) | |
33 | #define RMI_F01_QRY1_HAS_CHARGER_INP BIT(4) | |
34 | #define RMI_F01_QRY1_HAS_ADJ_DOZE BIT(5) | |
35 | #define RMI_F01_QRY1_HAS_ADJ_DOZE_HOFF BIT(6) | |
36 | #define RMI_F01_QRY1_HAS_QUERY42 BIT(7) | |
37 | ||
38 | #define RMI_F01_QRY5_YEAR_MASK 0x1f | |
39 | #define RMI_F01_QRY6_MONTH_MASK 0x0f | |
40 | #define RMI_F01_QRY7_DAY_MASK 0x1f | |
41 | ||
42 | #define RMI_F01_QRY2_PRODINFO_MASK 0x7f | |
43 | ||
44 | #define RMI_F01_BASIC_QUERY_LEN 21 /* From Query 00 through 20 */ | |
45 | ||
46 | struct f01_basic_properties { | |
47 | u8 manufacturer_id; | |
48 | bool has_lts; | |
49 | bool has_adjustable_doze; | |
50 | bool has_adjustable_doze_holdoff; | |
51 | char dom[11]; /* YYYY/MM/DD + '\0' */ | |
52 | u8 product_id[RMI_PRODUCT_ID_LENGTH + 1]; | |
53 | u16 productinfo; | |
54 | u32 firmware_id; | |
ce363f0d | 55 | u32 package_id; |
2b6a321d AD |
56 | }; |
57 | ||
58 | /* F01 device status bits */ | |
59 | ||
60 | /* Most recent device status event */ | |
61 | #define RMI_F01_STATUS_CODE(status) ((status) & 0x0f) | |
62 | /* The device has lost its configuration for some reason. */ | |
63 | #define RMI_F01_STATUS_UNCONFIGURED(status) (!!((status) & 0x80)) | |
29fd0ec2 ND |
64 | /* The device is in bootloader mode */ |
65 | #define RMI_F01_STATUS_BOOTLOADER(status) ((status) & 0x40) | |
2b6a321d AD |
66 | |
67 | /* Control register bits */ | |
68 | ||
69 | /* | |
70 | * Sleep mode controls power management on the device and affects all | |
71 | * functions of the device. | |
72 | */ | |
73 | #define RMI_F01_CTRL0_SLEEP_MODE_MASK 0x03 | |
74 | ||
75 | #define RMI_SLEEP_MODE_NORMAL 0x00 | |
76 | #define RMI_SLEEP_MODE_SENSOR_SLEEP 0x01 | |
77 | #define RMI_SLEEP_MODE_RESERVED0 0x02 | |
78 | #define RMI_SLEEP_MODE_RESERVED1 0x03 | |
79 | ||
80 | /* | |
81 | * This bit disables whatever sleep mode may be selected by the sleep_mode | |
82 | * field and forces the device to run at full power without sleeping. | |
83 | */ | |
e9000b79 | 84 | #define RMI_F01_CTRL0_NOSLEEP_BIT BIT(2) |
2b6a321d AD |
85 | |
86 | /* | |
87 | * When this bit is set, the touch controller employs a noise-filtering | |
88 | * algorithm designed for use with a connected battery charger. | |
89 | */ | |
e9000b79 | 90 | #define RMI_F01_CTRL0_CHARGER_BIT BIT(5) |
2b6a321d AD |
91 | |
92 | /* | |
93 | * Sets the report rate for the device. The effect of this setting is | |
94 | * highly product dependent. Check the spec sheet for your particular | |
95 | * touch sensor. | |
96 | */ | |
e9000b79 | 97 | #define RMI_F01_CTRL0_REPORTRATE_BIT BIT(6) |
2b6a321d AD |
98 | |
99 | /* | |
100 | * Written by the host as an indicator that the device has been | |
101 | * successfully configured. | |
102 | */ | |
e9000b79 | 103 | #define RMI_F01_CTRL0_CONFIGURED_BIT BIT(7) |
2b6a321d AD |
104 | |
105 | /** | |
106 | * @ctrl0 - see the bit definitions above. | |
107 | * @doze_interval - controls the interval between checks for finger presence | |
108 | * when the touch sensor is in doze mode, in units of 10ms. | |
109 | * @wakeup_threshold - controls the capacitance threshold at which the touch | |
110 | * sensor will decide to wake up from that low power state. | |
111 | * @doze_holdoff - controls how long the touch sensor waits after the last | |
112 | * finger lifts before entering the doze state, in units of 100ms. | |
113 | */ | |
114 | struct f01_device_control { | |
115 | u8 ctrl0; | |
116 | u8 doze_interval; | |
117 | u8 wakeup_threshold; | |
118 | u8 doze_holdoff; | |
119 | }; | |
120 | ||
121 | struct f01_data { | |
122 | struct f01_basic_properties properties; | |
123 | struct f01_device_control device_control; | |
124 | ||
125 | u16 doze_interval_addr; | |
126 | u16 wakeup_threshold_addr; | |
127 | u16 doze_holdoff_addr; | |
128 | ||
129 | bool suspended; | |
130 | bool old_nosleep; | |
131 | ||
132 | unsigned int num_of_irq_regs; | |
133 | }; | |
134 | ||
135 | static int rmi_f01_read_properties(struct rmi_device *rmi_dev, | |
136 | u16 query_base_addr, | |
137 | struct f01_basic_properties *props) | |
138 | { | |
139 | u8 queries[RMI_F01_BASIC_QUERY_LEN]; | |
140 | int ret; | |
141 | int query_offset = query_base_addr; | |
142 | bool has_ds4_queries = false; | |
143 | bool has_query42 = false; | |
144 | bool has_sensor_id = false; | |
145 | bool has_package_id_query = false; | |
146 | bool has_build_id_query = false; | |
147 | u16 prod_info_addr; | |
148 | u8 ds4_query_len; | |
149 | ||
150 | ret = rmi_read_block(rmi_dev, query_offset, | |
151 | queries, RMI_F01_BASIC_QUERY_LEN); | |
152 | if (ret) { | |
153 | dev_err(&rmi_dev->dev, | |
154 | "Failed to read device query registers: %d\n", ret); | |
155 | return ret; | |
156 | } | |
157 | ||
158 | prod_info_addr = query_offset + 17; | |
159 | query_offset += RMI_F01_BASIC_QUERY_LEN; | |
160 | ||
161 | /* Now parse what we got */ | |
162 | props->manufacturer_id = queries[0]; | |
163 | ||
164 | props->has_lts = queries[1] & RMI_F01_QRY1_HAS_LTS; | |
165 | props->has_adjustable_doze = | |
166 | queries[1] & RMI_F01_QRY1_HAS_ADJ_DOZE; | |
167 | props->has_adjustable_doze_holdoff = | |
168 | queries[1] & RMI_F01_QRY1_HAS_ADJ_DOZE_HOFF; | |
169 | has_query42 = queries[1] & RMI_F01_QRY1_HAS_QUERY42; | |
170 | has_sensor_id = queries[1] & RMI_F01_QRY1_HAS_SENSOR_ID; | |
171 | ||
172 | snprintf(props->dom, sizeof(props->dom), "20%02d/%02d/%02d", | |
173 | queries[5] & RMI_F01_QRY5_YEAR_MASK, | |
174 | queries[6] & RMI_F01_QRY6_MONTH_MASK, | |
175 | queries[7] & RMI_F01_QRY7_DAY_MASK); | |
176 | ||
177 | memcpy(props->product_id, &queries[11], | |
178 | RMI_PRODUCT_ID_LENGTH); | |
179 | props->product_id[RMI_PRODUCT_ID_LENGTH] = '\0'; | |
180 | ||
181 | props->productinfo = | |
182 | ((queries[2] & RMI_F01_QRY2_PRODINFO_MASK) << 7) | | |
183 | (queries[3] & RMI_F01_QRY2_PRODINFO_MASK); | |
184 | ||
185 | if (has_sensor_id) | |
186 | query_offset++; | |
187 | ||
188 | if (has_query42) { | |
189 | ret = rmi_read(rmi_dev, query_offset, queries); | |
190 | if (ret) { | |
191 | dev_err(&rmi_dev->dev, | |
192 | "Failed to read query 42 register: %d\n", ret); | |
193 | return ret; | |
194 | } | |
195 | ||
196 | has_ds4_queries = !!(queries[0] & BIT(0)); | |
197 | query_offset++; | |
198 | } | |
199 | ||
200 | if (has_ds4_queries) { | |
201 | ret = rmi_read(rmi_dev, query_offset, &ds4_query_len); | |
202 | if (ret) { | |
203 | dev_err(&rmi_dev->dev, | |
204 | "Failed to read DS4 queries length: %d\n", ret); | |
205 | return ret; | |
206 | } | |
207 | query_offset++; | |
208 | ||
209 | if (ds4_query_len > 0) { | |
210 | ret = rmi_read(rmi_dev, query_offset, queries); | |
211 | if (ret) { | |
212 | dev_err(&rmi_dev->dev, | |
213 | "Failed to read DS4 queries: %d\n", | |
214 | ret); | |
215 | return ret; | |
216 | } | |
217 | ||
218 | has_package_id_query = !!(queries[0] & BIT(0)); | |
219 | has_build_id_query = !!(queries[0] & BIT(1)); | |
220 | } | |
221 | ||
ce363f0d ND |
222 | if (has_package_id_query) { |
223 | ret = rmi_read_block(rmi_dev, prod_info_addr, | |
224 | queries, sizeof(__le64)); | |
225 | if (ret) { | |
226 | dev_err(&rmi_dev->dev, | |
227 | "Failed to read package info: %d\n", | |
228 | ret); | |
229 | return ret; | |
230 | } | |
231 | ||
232 | props->package_id = get_unaligned_le64(queries); | |
2b6a321d | 233 | prod_info_addr++; |
ce363f0d | 234 | } |
2b6a321d AD |
235 | |
236 | if (has_build_id_query) { | |
237 | ret = rmi_read_block(rmi_dev, prod_info_addr, queries, | |
238 | 3); | |
239 | if (ret) { | |
240 | dev_err(&rmi_dev->dev, | |
241 | "Failed to read product info: %d\n", | |
242 | ret); | |
243 | return ret; | |
244 | } | |
245 | ||
246 | props->firmware_id = queries[1] << 8 | queries[0]; | |
247 | props->firmware_id += queries[2] * 65536; | |
248 | } | |
249 | } | |
250 | ||
251 | return 0; | |
252 | } | |
253 | ||
ce363f0d | 254 | const char *rmi_f01_get_product_ID(struct rmi_function *fn) |
2b6a321d AD |
255 | { |
256 | struct f01_data *f01 = dev_get_drvdata(&fn->dev); | |
257 | ||
258 | return f01->properties.product_id; | |
259 | } | |
260 | ||
ce363f0d ND |
261 | static ssize_t rmi_driver_manufacturer_id_show(struct device *dev, |
262 | struct device_attribute *dattr, | |
263 | char *buf) | |
264 | { | |
265 | struct rmi_driver_data *data = dev_get_drvdata(dev); | |
266 | struct f01_data *f01 = dev_get_drvdata(&data->f01_container->dev); | |
267 | ||
268 | return scnprintf(buf, PAGE_SIZE, "%d\n", | |
269 | f01->properties.manufacturer_id); | |
270 | } | |
271 | ||
272 | static DEVICE_ATTR(manufacturer_id, 0444, | |
273 | rmi_driver_manufacturer_id_show, NULL); | |
274 | ||
275 | static ssize_t rmi_driver_dom_show(struct device *dev, | |
276 | struct device_attribute *dattr, char *buf) | |
277 | { | |
278 | struct rmi_driver_data *data = dev_get_drvdata(dev); | |
279 | struct f01_data *f01 = dev_get_drvdata(&data->f01_container->dev); | |
280 | ||
281 | return scnprintf(buf, PAGE_SIZE, "%s\n", f01->properties.dom); | |
282 | } | |
283 | ||
284 | static DEVICE_ATTR(date_of_manufacture, 0444, rmi_driver_dom_show, NULL); | |
285 | ||
286 | static ssize_t rmi_driver_product_id_show(struct device *dev, | |
287 | struct device_attribute *dattr, | |
288 | char *buf) | |
289 | { | |
290 | struct rmi_driver_data *data = dev_get_drvdata(dev); | |
291 | struct f01_data *f01 = dev_get_drvdata(&data->f01_container->dev); | |
292 | ||
293 | return scnprintf(buf, PAGE_SIZE, "%s\n", f01->properties.product_id); | |
294 | } | |
295 | ||
296 | static DEVICE_ATTR(product_id, 0444, rmi_driver_product_id_show, NULL); | |
297 | ||
298 | static ssize_t rmi_driver_firmware_id_show(struct device *dev, | |
299 | struct device_attribute *dattr, | |
300 | char *buf) | |
301 | { | |
302 | struct rmi_driver_data *data = dev_get_drvdata(dev); | |
303 | struct f01_data *f01 = dev_get_drvdata(&data->f01_container->dev); | |
304 | ||
305 | return scnprintf(buf, PAGE_SIZE, "%d\n", f01->properties.firmware_id); | |
306 | } | |
307 | ||
308 | static DEVICE_ATTR(firmware_id, 0444, rmi_driver_firmware_id_show, NULL); | |
309 | ||
310 | static ssize_t rmi_driver_package_id_show(struct device *dev, | |
311 | struct device_attribute *dattr, | |
312 | char *buf) | |
313 | { | |
314 | struct rmi_driver_data *data = dev_get_drvdata(dev); | |
315 | struct f01_data *f01 = dev_get_drvdata(&data->f01_container->dev); | |
316 | ||
317 | u32 package_id = f01->properties.package_id; | |
318 | ||
319 | return scnprintf(buf, PAGE_SIZE, "%04x.%04x\n", | |
320 | package_id & 0xffff, (package_id >> 16) & 0xffff); | |
321 | } | |
322 | ||
323 | static DEVICE_ATTR(package_id, 0444, rmi_driver_package_id_show, NULL); | |
324 | ||
325 | static struct attribute *rmi_f01_attrs[] = { | |
326 | &dev_attr_manufacturer_id.attr, | |
327 | &dev_attr_date_of_manufacture.attr, | |
328 | &dev_attr_product_id.attr, | |
329 | &dev_attr_firmware_id.attr, | |
330 | &dev_attr_package_id.attr, | |
331 | NULL | |
332 | }; | |
333 | ||
0d4b8e36 | 334 | static const struct attribute_group rmi_f01_attr_group = { |
ce363f0d ND |
335 | .attrs = rmi_f01_attrs, |
336 | }; | |
337 | ||
d8a8b3ed AD |
338 | #ifdef CONFIG_OF |
339 | static int rmi_f01_of_probe(struct device *dev, | |
340 | struct rmi_device_platform_data *pdata) | |
341 | { | |
342 | int retval; | |
343 | u32 val; | |
344 | ||
345 | retval = rmi_of_property_read_u32(dev, | |
346 | (u32 *)&pdata->power_management.nosleep, | |
347 | "syna,nosleep-mode", 1); | |
348 | if (retval) | |
349 | return retval; | |
350 | ||
351 | retval = rmi_of_property_read_u32(dev, &val, | |
352 | "syna,wakeup-threshold", 1); | |
353 | if (retval) | |
354 | return retval; | |
355 | ||
356 | pdata->power_management.wakeup_threshold = val; | |
357 | ||
358 | retval = rmi_of_property_read_u32(dev, &val, | |
359 | "syna,doze-holdoff-ms", 1); | |
360 | if (retval) | |
361 | return retval; | |
362 | ||
363 | pdata->power_management.doze_holdoff = val * 100; | |
364 | ||
365 | retval = rmi_of_property_read_u32(dev, &val, | |
366 | "syna,doze-interval-ms", 1); | |
367 | if (retval) | |
368 | return retval; | |
369 | ||
370 | pdata->power_management.doze_interval = val / 10; | |
371 | ||
372 | return 0; | |
373 | } | |
374 | #else | |
375 | static inline int rmi_f01_of_probe(struct device *dev, | |
376 | struct rmi_device_platform_data *pdata) | |
377 | { | |
378 | return -ENODEV; | |
379 | } | |
380 | #endif | |
381 | ||
2b6a321d AD |
382 | static int rmi_f01_probe(struct rmi_function *fn) |
383 | { | |
384 | struct rmi_device *rmi_dev = fn->rmi_dev; | |
385 | struct rmi_driver_data *driver_data = dev_get_drvdata(&rmi_dev->dev); | |
386 | struct rmi_device_platform_data *pdata = rmi_get_platform_data(rmi_dev); | |
387 | struct f01_data *f01; | |
388 | int error; | |
389 | u16 ctrl_base_addr = fn->fd.control_base_addr; | |
390 | u8 device_status; | |
391 | u8 temp; | |
392 | ||
d8a8b3ed AD |
393 | if (fn->dev.of_node) { |
394 | error = rmi_f01_of_probe(&fn->dev, pdata); | |
395 | if (error) | |
396 | return error; | |
397 | } | |
398 | ||
2b6a321d AD |
399 | f01 = devm_kzalloc(&fn->dev, sizeof(struct f01_data), GFP_KERNEL); |
400 | if (!f01) | |
401 | return -ENOMEM; | |
402 | ||
403 | f01->num_of_irq_regs = driver_data->num_of_irq_regs; | |
404 | ||
405 | /* | |
406 | * Set the configured bit and (optionally) other important stuff | |
407 | * in the device control register. | |
408 | */ | |
409 | ||
410 | error = rmi_read(rmi_dev, fn->fd.control_base_addr, | |
411 | &f01->device_control.ctrl0); | |
412 | if (error) { | |
413 | dev_err(&fn->dev, "Failed to read F01 control: %d\n", error); | |
414 | return error; | |
415 | } | |
416 | ||
417 | switch (pdata->power_management.nosleep) { | |
2775e523 | 418 | case RMI_REG_STATE_DEFAULT: |
2b6a321d | 419 | break; |
2775e523 | 420 | case RMI_REG_STATE_OFF: |
e9000b79 | 421 | f01->device_control.ctrl0 &= ~RMI_F01_CTRL0_NOSLEEP_BIT; |
2b6a321d | 422 | break; |
2775e523 | 423 | case RMI_REG_STATE_ON: |
e9000b79 | 424 | f01->device_control.ctrl0 |= RMI_F01_CTRL0_NOSLEEP_BIT; |
2b6a321d AD |
425 | break; |
426 | } | |
427 | ||
428 | /* | |
429 | * Sleep mode might be set as a hangover from a system crash or | |
430 | * reboot without power cycle. If so, clear it so the sensor | |
431 | * is certain to function. | |
432 | */ | |
433 | if ((f01->device_control.ctrl0 & RMI_F01_CTRL0_SLEEP_MODE_MASK) != | |
434 | RMI_SLEEP_MODE_NORMAL) { | |
435 | dev_warn(&fn->dev, | |
436 | "WARNING: Non-zero sleep mode found. Clearing...\n"); | |
437 | f01->device_control.ctrl0 &= ~RMI_F01_CTRL0_SLEEP_MODE_MASK; | |
438 | } | |
439 | ||
e9000b79 | 440 | f01->device_control.ctrl0 |= RMI_F01_CTRL0_CONFIGURED_BIT; |
2b6a321d AD |
441 | |
442 | error = rmi_write(rmi_dev, fn->fd.control_base_addr, | |
443 | f01->device_control.ctrl0); | |
444 | if (error) { | |
445 | dev_err(&fn->dev, "Failed to write F01 control: %d\n", error); | |
446 | return error; | |
447 | } | |
448 | ||
449 | /* Dummy read in order to clear irqs */ | |
450 | error = rmi_read(rmi_dev, fn->fd.data_base_addr + 1, &temp); | |
451 | if (error < 0) { | |
452 | dev_err(&fn->dev, "Failed to read Interrupt Status.\n"); | |
453 | return error; | |
454 | } | |
455 | ||
456 | error = rmi_f01_read_properties(rmi_dev, fn->fd.query_base_addr, | |
457 | &f01->properties); | |
458 | if (error < 0) { | |
459 | dev_err(&fn->dev, "Failed to read F01 properties.\n"); | |
460 | return error; | |
461 | } | |
462 | ||
463 | dev_info(&fn->dev, "found RMI device, manufacturer: %s, product: %s, fw id: %d\n", | |
464 | f01->properties.manufacturer_id == 1 ? "Synaptics" : "unknown", | |
465 | f01->properties.product_id, f01->properties.firmware_id); | |
466 | ||
467 | /* Advance to interrupt control registers, then skip over them. */ | |
468 | ctrl_base_addr++; | |
469 | ctrl_base_addr += f01->num_of_irq_regs; | |
470 | ||
471 | /* read control register */ | |
472 | if (f01->properties.has_adjustable_doze) { | |
473 | f01->doze_interval_addr = ctrl_base_addr; | |
474 | ctrl_base_addr++; | |
475 | ||
476 | if (pdata->power_management.doze_interval) { | |
477 | f01->device_control.doze_interval = | |
478 | pdata->power_management.doze_interval; | |
479 | error = rmi_write(rmi_dev, f01->doze_interval_addr, | |
480 | f01->device_control.doze_interval); | |
481 | if (error) { | |
482 | dev_err(&fn->dev, | |
483 | "Failed to configure F01 doze interval register: %d\n", | |
484 | error); | |
485 | return error; | |
486 | } | |
487 | } else { | |
488 | error = rmi_read(rmi_dev, f01->doze_interval_addr, | |
489 | &f01->device_control.doze_interval); | |
490 | if (error) { | |
491 | dev_err(&fn->dev, | |
492 | "Failed to read F01 doze interval register: %d\n", | |
493 | error); | |
494 | return error; | |
495 | } | |
496 | } | |
497 | ||
498 | f01->wakeup_threshold_addr = ctrl_base_addr; | |
499 | ctrl_base_addr++; | |
500 | ||
501 | if (pdata->power_management.wakeup_threshold) { | |
502 | f01->device_control.wakeup_threshold = | |
503 | pdata->power_management.wakeup_threshold; | |
504 | error = rmi_write(rmi_dev, f01->wakeup_threshold_addr, | |
505 | f01->device_control.wakeup_threshold); | |
506 | if (error) { | |
507 | dev_err(&fn->dev, | |
508 | "Failed to configure F01 wakeup threshold register: %d\n", | |
509 | error); | |
510 | return error; | |
511 | } | |
512 | } else { | |
513 | error = rmi_read(rmi_dev, f01->wakeup_threshold_addr, | |
514 | &f01->device_control.wakeup_threshold); | |
515 | if (error < 0) { | |
516 | dev_err(&fn->dev, | |
517 | "Failed to read F01 wakeup threshold register: %d\n", | |
518 | error); | |
519 | return error; | |
520 | } | |
521 | } | |
522 | } | |
523 | ||
524 | if (f01->properties.has_lts) | |
525 | ctrl_base_addr++; | |
526 | ||
527 | if (f01->properties.has_adjustable_doze_holdoff) { | |
528 | f01->doze_holdoff_addr = ctrl_base_addr; | |
529 | ctrl_base_addr++; | |
530 | ||
531 | if (pdata->power_management.doze_holdoff) { | |
532 | f01->device_control.doze_holdoff = | |
533 | pdata->power_management.doze_holdoff; | |
534 | error = rmi_write(rmi_dev, f01->doze_holdoff_addr, | |
535 | f01->device_control.doze_holdoff); | |
536 | if (error) { | |
537 | dev_err(&fn->dev, | |
538 | "Failed to configure F01 doze holdoff register: %d\n", | |
539 | error); | |
540 | return error; | |
541 | } | |
542 | } else { | |
543 | error = rmi_read(rmi_dev, f01->doze_holdoff_addr, | |
544 | &f01->device_control.doze_holdoff); | |
545 | if (error) { | |
546 | dev_err(&fn->dev, | |
547 | "Failed to read F01 doze holdoff register: %d\n", | |
548 | error); | |
549 | return error; | |
550 | } | |
551 | } | |
552 | } | |
553 | ||
554 | error = rmi_read(rmi_dev, fn->fd.data_base_addr, &device_status); | |
555 | if (error < 0) { | |
556 | dev_err(&fn->dev, | |
557 | "Failed to read device status: %d\n", error); | |
558 | return error; | |
559 | } | |
560 | ||
561 | if (RMI_F01_STATUS_UNCONFIGURED(device_status)) { | |
562 | dev_err(&fn->dev, | |
563 | "Device was reset during configuration process, status: %#02x!\n", | |
564 | RMI_F01_STATUS_CODE(device_status)); | |
565 | return -EINVAL; | |
566 | } | |
567 | ||
568 | dev_set_drvdata(&fn->dev, f01); | |
569 | ||
060403f3 | 570 | error = sysfs_create_group(&fn->rmi_dev->dev.kobj, &rmi_f01_attr_group); |
ce363f0d | 571 | if (error) |
060403f3 | 572 | dev_warn(&fn->dev, "Failed to create sysfs group: %d\n", error); |
ce363f0d | 573 | |
2b6a321d AD |
574 | return 0; |
575 | } | |
576 | ||
060403f3 ND |
577 | static void rmi_f01_remove(struct rmi_function *fn) |
578 | { | |
579 | /* Note that the bus device is used, not the F01 device */ | |
580 | sysfs_remove_group(&fn->rmi_dev->dev.kobj, &rmi_f01_attr_group); | |
581 | } | |
582 | ||
2b6a321d AD |
583 | static int rmi_f01_config(struct rmi_function *fn) |
584 | { | |
585 | struct f01_data *f01 = dev_get_drvdata(&fn->dev); | |
586 | int error; | |
587 | ||
588 | error = rmi_write(fn->rmi_dev, fn->fd.control_base_addr, | |
589 | f01->device_control.ctrl0); | |
590 | if (error) { | |
591 | dev_err(&fn->dev, | |
592 | "Failed to write device_control register: %d\n", error); | |
593 | return error; | |
594 | } | |
595 | ||
596 | if (f01->properties.has_adjustable_doze) { | |
597 | error = rmi_write(fn->rmi_dev, f01->doze_interval_addr, | |
598 | f01->device_control.doze_interval); | |
599 | if (error) { | |
600 | dev_err(&fn->dev, | |
601 | "Failed to write doze interval: %d\n", error); | |
602 | return error; | |
603 | } | |
604 | ||
605 | error = rmi_write_block(fn->rmi_dev, | |
606 | f01->wakeup_threshold_addr, | |
607 | &f01->device_control.wakeup_threshold, | |
608 | sizeof(u8)); | |
609 | if (error) { | |
610 | dev_err(&fn->dev, | |
611 | "Failed to write wakeup threshold: %d\n", | |
612 | error); | |
613 | return error; | |
614 | } | |
615 | } | |
616 | ||
617 | if (f01->properties.has_adjustable_doze_holdoff) { | |
618 | error = rmi_write(fn->rmi_dev, f01->doze_holdoff_addr, | |
619 | f01->device_control.doze_holdoff); | |
620 | if (error) { | |
621 | dev_err(&fn->dev, | |
622 | "Failed to write doze holdoff: %d\n", error); | |
623 | return error; | |
624 | } | |
625 | } | |
626 | ||
627 | return 0; | |
628 | } | |
629 | ||
630 | static int rmi_f01_suspend(struct rmi_function *fn) | |
631 | { | |
632 | struct f01_data *f01 = dev_get_drvdata(&fn->dev); | |
633 | int error; | |
634 | ||
635 | f01->old_nosleep = | |
e9000b79 ND |
636 | f01->device_control.ctrl0 & RMI_F01_CTRL0_NOSLEEP_BIT; |
637 | f01->device_control.ctrl0 &= ~RMI_F01_CTRL0_NOSLEEP_BIT; | |
2b6a321d AD |
638 | |
639 | f01->device_control.ctrl0 &= ~RMI_F01_CTRL0_SLEEP_MODE_MASK; | |
640 | if (device_may_wakeup(fn->rmi_dev->xport->dev)) | |
641 | f01->device_control.ctrl0 |= RMI_SLEEP_MODE_RESERVED1; | |
642 | else | |
643 | f01->device_control.ctrl0 |= RMI_SLEEP_MODE_SENSOR_SLEEP; | |
644 | ||
645 | error = rmi_write(fn->rmi_dev, fn->fd.control_base_addr, | |
646 | f01->device_control.ctrl0); | |
647 | if (error) { | |
648 | dev_err(&fn->dev, "Failed to write sleep mode: %d.\n", error); | |
649 | if (f01->old_nosleep) | |
e9000b79 | 650 | f01->device_control.ctrl0 |= RMI_F01_CTRL0_NOSLEEP_BIT; |
2b6a321d AD |
651 | f01->device_control.ctrl0 &= ~RMI_F01_CTRL0_SLEEP_MODE_MASK; |
652 | f01->device_control.ctrl0 |= RMI_SLEEP_MODE_NORMAL; | |
653 | return error; | |
654 | } | |
655 | ||
656 | return 0; | |
657 | } | |
658 | ||
659 | static int rmi_f01_resume(struct rmi_function *fn) | |
660 | { | |
661 | struct f01_data *f01 = dev_get_drvdata(&fn->dev); | |
662 | int error; | |
663 | ||
664 | if (f01->old_nosleep) | |
e9000b79 | 665 | f01->device_control.ctrl0 |= RMI_F01_CTRL0_NOSLEEP_BIT; |
2b6a321d AD |
666 | |
667 | f01->device_control.ctrl0 &= ~RMI_F01_CTRL0_SLEEP_MODE_MASK; | |
668 | f01->device_control.ctrl0 |= RMI_SLEEP_MODE_NORMAL; | |
669 | ||
670 | error = rmi_write(fn->rmi_dev, fn->fd.control_base_addr, | |
671 | f01->device_control.ctrl0); | |
672 | if (error) { | |
673 | dev_err(&fn->dev, | |
674 | "Failed to restore normal operation: %d.\n", error); | |
675 | return error; | |
676 | } | |
677 | ||
678 | return 0; | |
679 | } | |
680 | ||
24d28e4f | 681 | static irqreturn_t rmi_f01_attention(int irq, void *ctx) |
2b6a321d | 682 | { |
24d28e4f | 683 | struct rmi_function *fn = ctx; |
2b6a321d AD |
684 | struct rmi_device *rmi_dev = fn->rmi_dev; |
685 | int error; | |
686 | u8 device_status; | |
687 | ||
688 | error = rmi_read(rmi_dev, fn->fd.data_base_addr, &device_status); | |
689 | if (error) { | |
690 | dev_err(&fn->dev, | |
691 | "Failed to read device status: %d.\n", error); | |
24d28e4f | 692 | return IRQ_RETVAL(error); |
2b6a321d AD |
693 | } |
694 | ||
29fd0ec2 ND |
695 | if (RMI_F01_STATUS_BOOTLOADER(device_status)) |
696 | dev_warn(&fn->dev, | |
697 | "Device in bootloader mode, please update firmware\n"); | |
698 | ||
2b6a321d AD |
699 | if (RMI_F01_STATUS_UNCONFIGURED(device_status)) { |
700 | dev_warn(&fn->dev, "Device reset detected.\n"); | |
701 | error = rmi_dev->driver->reset_handler(rmi_dev); | |
702 | if (error) { | |
703 | dev_err(&fn->dev, "Device reset failed: %d\n", error); | |
24d28e4f | 704 | return IRQ_RETVAL(error); |
2b6a321d AD |
705 | } |
706 | } | |
707 | ||
24d28e4f | 708 | return IRQ_HANDLED; |
2b6a321d AD |
709 | } |
710 | ||
711 | struct rmi_function_handler rmi_f01_handler = { | |
712 | .driver = { | |
713 | .name = "rmi4_f01", | |
714 | /* | |
715 | * Do not allow user unbinding F01 as it is critical | |
716 | * function. | |
717 | */ | |
718 | .suppress_bind_attrs = true, | |
719 | }, | |
720 | .func = 0x01, | |
721 | .probe = rmi_f01_probe, | |
060403f3 | 722 | .remove = rmi_f01_remove, |
2b6a321d AD |
723 | .config = rmi_f01_config, |
724 | .attention = rmi_f01_attention, | |
725 | .suspend = rmi_f01_suspend, | |
726 | .resume = rmi_f01_resume, | |
727 | }; |