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c77fd0a4 MR |
1 | /* |
2 | * Input driver for Microchip CAP11xx based capacitive touch sensors | |
3 | * | |
c77fd0a4 MR |
4 | * (c) 2014 Daniel Mack <linux@zonque.org> |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | */ | |
10 | ||
11 | #include <linux/kernel.h> | |
12 | #include <linux/module.h> | |
13 | #include <linux/interrupt.h> | |
14 | #include <linux/input.h> | |
efe3b616 | 15 | #include <linux/leds.h> |
c77fd0a4 MR |
16 | #include <linux/of_irq.h> |
17 | #include <linux/regmap.h> | |
18 | #include <linux/i2c.h> | |
19 | #include <linux/gpio/consumer.h> | |
20 | ||
21 | #define CAP11XX_REG_MAIN_CONTROL 0x00 | |
22 | #define CAP11XX_REG_MAIN_CONTROL_GAIN_SHIFT (6) | |
23 | #define CAP11XX_REG_MAIN_CONTROL_GAIN_MASK (0xc0) | |
24 | #define CAP11XX_REG_MAIN_CONTROL_DLSEEP BIT(4) | |
25 | #define CAP11XX_REG_GENERAL_STATUS 0x02 | |
26 | #define CAP11XX_REG_SENSOR_INPUT 0x03 | |
27 | #define CAP11XX_REG_NOISE_FLAG_STATUS 0x0a | |
28 | #define CAP11XX_REG_SENOR_DELTA(X) (0x10 + (X)) | |
29 | #define CAP11XX_REG_SENSITIVITY_CONTROL 0x1f | |
30 | #define CAP11XX_REG_CONFIG 0x20 | |
31 | #define CAP11XX_REG_SENSOR_ENABLE 0x21 | |
32 | #define CAP11XX_REG_SENSOR_CONFIG 0x22 | |
33 | #define CAP11XX_REG_SENSOR_CONFIG2 0x23 | |
34 | #define CAP11XX_REG_SAMPLING_CONFIG 0x24 | |
35 | #define CAP11XX_REG_CALIBRATION 0x26 | |
36 | #define CAP11XX_REG_INT_ENABLE 0x27 | |
37 | #define CAP11XX_REG_REPEAT_RATE 0x28 | |
38 | #define CAP11XX_REG_MT_CONFIG 0x2a | |
39 | #define CAP11XX_REG_MT_PATTERN_CONFIG 0x2b | |
40 | #define CAP11XX_REG_MT_PATTERN 0x2d | |
41 | #define CAP11XX_REG_RECALIB_CONFIG 0x2f | |
42 | #define CAP11XX_REG_SENSOR_THRESH(X) (0x30 + (X)) | |
43 | #define CAP11XX_REG_SENSOR_NOISE_THRESH 0x38 | |
44 | #define CAP11XX_REG_STANDBY_CHANNEL 0x40 | |
45 | #define CAP11XX_REG_STANDBY_CONFIG 0x41 | |
46 | #define CAP11XX_REG_STANDBY_SENSITIVITY 0x42 | |
47 | #define CAP11XX_REG_STANDBY_THRESH 0x43 | |
48 | #define CAP11XX_REG_CONFIG2 0x44 | |
6bdd2fd1 | 49 | #define CAP11XX_REG_CONFIG2_ALT_POL BIT(6) |
c77fd0a4 | 50 | #define CAP11XX_REG_SENSOR_BASE_CNT(X) (0x50 + (X)) |
efe3b616 MR |
51 | #define CAP11XX_REG_LED_POLARITY 0x73 |
52 | #define CAP11XX_REG_LED_OUTPUT_CONTROL 0x74 | |
53 | ||
54 | #define CAP11XX_REG_LED_DUTY_CYCLE_1 0x90 | |
55 | #define CAP11XX_REG_LED_DUTY_CYCLE_2 0x91 | |
56 | #define CAP11XX_REG_LED_DUTY_CYCLE_3 0x92 | |
57 | #define CAP11XX_REG_LED_DUTY_CYCLE_4 0x93 | |
58 | ||
59 | #define CAP11XX_REG_LED_DUTY_MIN_MASK (0x0f) | |
60 | #define CAP11XX_REG_LED_DUTY_MIN_MASK_SHIFT (0) | |
61 | #define CAP11XX_REG_LED_DUTY_MAX_MASK (0xf0) | |
62 | #define CAP11XX_REG_LED_DUTY_MAX_MASK_SHIFT (4) | |
63 | #define CAP11XX_REG_LED_DUTY_MAX_VALUE (15) | |
64 | ||
c77fd0a4 MR |
65 | #define CAP11XX_REG_SENSOR_CALIB (0xb1 + (X)) |
66 | #define CAP11XX_REG_SENSOR_CALIB_LSB1 0xb9 | |
67 | #define CAP11XX_REG_SENSOR_CALIB_LSB2 0xba | |
68 | #define CAP11XX_REG_PRODUCT_ID 0xfd | |
69 | #define CAP11XX_REG_MANUFACTURER_ID 0xfe | |
70 | #define CAP11XX_REG_REVISION 0xff | |
71 | ||
c77fd0a4 MR |
72 | #define CAP11XX_MANUFACTURER_ID 0x5d |
73 | ||
efe3b616 MR |
74 | #ifdef CONFIG_LEDS_CLASS |
75 | struct cap11xx_led { | |
76 | struct cap11xx_priv *priv; | |
77 | struct led_classdev cdev; | |
78 | struct work_struct work; | |
79 | u32 reg; | |
80 | enum led_brightness new_brightness; | |
81 | }; | |
82 | #endif | |
83 | ||
c77fd0a4 MR |
84 | struct cap11xx_priv { |
85 | struct regmap *regmap; | |
86 | struct input_dev *idev; | |
87 | ||
efe3b616 MR |
88 | struct cap11xx_led *leds; |
89 | int num_leds; | |
90 | ||
c77fd0a4 | 91 | /* config */ |
7609a5e9 MR |
92 | u32 keycodes[]; |
93 | }; | |
94 | ||
95 | struct cap11xx_hw_model { | |
96 | u8 product_id; | |
97 | unsigned int num_channels; | |
efe3b616 | 98 | unsigned int num_leds; |
7609a5e9 MR |
99 | }; |
100 | ||
101 | enum { | |
102 | CAP1106, | |
103 | CAP1126, | |
104 | CAP1188, | |
105 | }; | |
106 | ||
107 | static const struct cap11xx_hw_model cap11xx_devices[] = { | |
efe3b616 MR |
108 | [CAP1106] = { .product_id = 0x55, .num_channels = 6, .num_leds = 0 }, |
109 | [CAP1126] = { .product_id = 0x53, .num_channels = 6, .num_leds = 2 }, | |
110 | [CAP1188] = { .product_id = 0x50, .num_channels = 8, .num_leds = 8 }, | |
c77fd0a4 MR |
111 | }; |
112 | ||
113 | static const struct reg_default cap11xx_reg_defaults[] = { | |
114 | { CAP11XX_REG_MAIN_CONTROL, 0x00 }, | |
115 | { CAP11XX_REG_GENERAL_STATUS, 0x00 }, | |
116 | { CAP11XX_REG_SENSOR_INPUT, 0x00 }, | |
117 | { CAP11XX_REG_NOISE_FLAG_STATUS, 0x00 }, | |
118 | { CAP11XX_REG_SENSITIVITY_CONTROL, 0x2f }, | |
119 | { CAP11XX_REG_CONFIG, 0x20 }, | |
120 | { CAP11XX_REG_SENSOR_ENABLE, 0x3f }, | |
121 | { CAP11XX_REG_SENSOR_CONFIG, 0xa4 }, | |
122 | { CAP11XX_REG_SENSOR_CONFIG2, 0x07 }, | |
123 | { CAP11XX_REG_SAMPLING_CONFIG, 0x39 }, | |
124 | { CAP11XX_REG_CALIBRATION, 0x00 }, | |
125 | { CAP11XX_REG_INT_ENABLE, 0x3f }, | |
126 | { CAP11XX_REG_REPEAT_RATE, 0x3f }, | |
127 | { CAP11XX_REG_MT_CONFIG, 0x80 }, | |
128 | { CAP11XX_REG_MT_PATTERN_CONFIG, 0x00 }, | |
129 | { CAP11XX_REG_MT_PATTERN, 0x3f }, | |
130 | { CAP11XX_REG_RECALIB_CONFIG, 0x8a }, | |
131 | { CAP11XX_REG_SENSOR_THRESH(0), 0x40 }, | |
132 | { CAP11XX_REG_SENSOR_THRESH(1), 0x40 }, | |
133 | { CAP11XX_REG_SENSOR_THRESH(2), 0x40 }, | |
134 | { CAP11XX_REG_SENSOR_THRESH(3), 0x40 }, | |
135 | { CAP11XX_REG_SENSOR_THRESH(4), 0x40 }, | |
136 | { CAP11XX_REG_SENSOR_THRESH(5), 0x40 }, | |
137 | { CAP11XX_REG_SENSOR_NOISE_THRESH, 0x01 }, | |
138 | { CAP11XX_REG_STANDBY_CHANNEL, 0x00 }, | |
139 | { CAP11XX_REG_STANDBY_CONFIG, 0x39 }, | |
140 | { CAP11XX_REG_STANDBY_SENSITIVITY, 0x02 }, | |
141 | { CAP11XX_REG_STANDBY_THRESH, 0x40 }, | |
142 | { CAP11XX_REG_CONFIG2, 0x40 }, | |
efe3b616 | 143 | { CAP11XX_REG_LED_POLARITY, 0x00 }, |
c77fd0a4 MR |
144 | { CAP11XX_REG_SENSOR_CALIB_LSB1, 0x00 }, |
145 | { CAP11XX_REG_SENSOR_CALIB_LSB2, 0x00 }, | |
146 | }; | |
147 | ||
148 | static bool cap11xx_volatile_reg(struct device *dev, unsigned int reg) | |
149 | { | |
150 | switch (reg) { | |
151 | case CAP11XX_REG_MAIN_CONTROL: | |
152 | case CAP11XX_REG_SENSOR_INPUT: | |
153 | case CAP11XX_REG_SENOR_DELTA(0): | |
154 | case CAP11XX_REG_SENOR_DELTA(1): | |
155 | case CAP11XX_REG_SENOR_DELTA(2): | |
156 | case CAP11XX_REG_SENOR_DELTA(3): | |
157 | case CAP11XX_REG_SENOR_DELTA(4): | |
158 | case CAP11XX_REG_SENOR_DELTA(5): | |
159 | case CAP11XX_REG_PRODUCT_ID: | |
160 | case CAP11XX_REG_MANUFACTURER_ID: | |
161 | case CAP11XX_REG_REVISION: | |
162 | return true; | |
163 | } | |
164 | ||
165 | return false; | |
166 | } | |
167 | ||
168 | static const struct regmap_config cap11xx_regmap_config = { | |
169 | .reg_bits = 8, | |
170 | .val_bits = 8, | |
171 | ||
172 | .max_register = CAP11XX_REG_REVISION, | |
173 | .reg_defaults = cap11xx_reg_defaults, | |
174 | ||
175 | .num_reg_defaults = ARRAY_SIZE(cap11xx_reg_defaults), | |
176 | .cache_type = REGCACHE_RBTREE, | |
177 | .volatile_reg = cap11xx_volatile_reg, | |
178 | }; | |
179 | ||
180 | static irqreturn_t cap11xx_thread_func(int irq_num, void *data) | |
181 | { | |
182 | struct cap11xx_priv *priv = data; | |
183 | unsigned int status; | |
184 | int ret, i; | |
185 | ||
186 | /* | |
187 | * Deassert interrupt. This needs to be done before reading the status | |
188 | * registers, which will not carry valid values otherwise. | |
189 | */ | |
190 | ret = regmap_update_bits(priv->regmap, CAP11XX_REG_MAIN_CONTROL, 1, 0); | |
191 | if (ret < 0) | |
192 | goto out; | |
193 | ||
194 | ret = regmap_read(priv->regmap, CAP11XX_REG_SENSOR_INPUT, &status); | |
195 | if (ret < 0) | |
196 | goto out; | |
197 | ||
7609a5e9 | 198 | for (i = 0; i < priv->idev->keycodemax; i++) |
c77fd0a4 MR |
199 | input_report_key(priv->idev, priv->keycodes[i], |
200 | status & (1 << i)); | |
201 | ||
202 | input_sync(priv->idev); | |
203 | ||
204 | out: | |
205 | return IRQ_HANDLED; | |
206 | } | |
207 | ||
208 | static int cap11xx_set_sleep(struct cap11xx_priv *priv, bool sleep) | |
209 | { | |
efe3b616 MR |
210 | /* |
211 | * DLSEEP mode will turn off all LEDS, prevent this | |
212 | */ | |
213 | if (IS_ENABLED(CONFIG_LEDS_CLASS) && priv->num_leds) | |
214 | return 0; | |
215 | ||
c77fd0a4 MR |
216 | return regmap_update_bits(priv->regmap, CAP11XX_REG_MAIN_CONTROL, |
217 | CAP11XX_REG_MAIN_CONTROL_DLSEEP, | |
218 | sleep ? CAP11XX_REG_MAIN_CONTROL_DLSEEP : 0); | |
219 | } | |
220 | ||
221 | static int cap11xx_input_open(struct input_dev *idev) | |
222 | { | |
223 | struct cap11xx_priv *priv = input_get_drvdata(idev); | |
224 | ||
225 | return cap11xx_set_sleep(priv, false); | |
226 | } | |
227 | ||
228 | static void cap11xx_input_close(struct input_dev *idev) | |
229 | { | |
230 | struct cap11xx_priv *priv = input_get_drvdata(idev); | |
231 | ||
232 | cap11xx_set_sleep(priv, true); | |
233 | } | |
234 | ||
efe3b616 MR |
235 | #ifdef CONFIG_LEDS_CLASS |
236 | static void cap11xx_led_work(struct work_struct *work) | |
237 | { | |
238 | struct cap11xx_led *led = container_of(work, struct cap11xx_led, work); | |
239 | struct cap11xx_priv *priv = led->priv; | |
240 | int value = led->new_brightness; | |
241 | ||
242 | /* | |
243 | * All LEDs share the same duty cycle as this is a HW limitation. | |
244 | * Brightness levels per LED are either 0 (OFF) and 1 (ON). | |
245 | */ | |
246 | regmap_update_bits(priv->regmap, CAP11XX_REG_LED_OUTPUT_CONTROL, | |
247 | BIT(led->reg), value ? BIT(led->reg) : 0); | |
248 | } | |
249 | ||
250 | static void cap11xx_led_set(struct led_classdev *cdev, | |
251 | enum led_brightness value) | |
252 | { | |
253 | struct cap11xx_led *led = container_of(cdev, struct cap11xx_led, cdev); | |
254 | ||
255 | if (led->new_brightness == value) | |
256 | return; | |
257 | ||
258 | led->new_brightness = value; | |
259 | schedule_work(&led->work); | |
260 | } | |
261 | ||
262 | static int cap11xx_init_leds(struct device *dev, | |
263 | struct cap11xx_priv *priv, int num_leds) | |
264 | { | |
265 | struct device_node *node = dev->of_node, *child; | |
266 | struct cap11xx_led *led; | |
267 | int cnt = of_get_child_count(node); | |
268 | int error; | |
269 | ||
270 | if (!num_leds || !cnt) | |
271 | return 0; | |
272 | ||
273 | if (cnt > num_leds) | |
274 | return -EINVAL; | |
275 | ||
276 | led = devm_kcalloc(dev, cnt, sizeof(struct cap11xx_led), GFP_KERNEL); | |
277 | if (!led) | |
278 | return -ENOMEM; | |
279 | ||
280 | priv->leds = led; | |
281 | ||
282 | error = regmap_update_bits(priv->regmap, | |
283 | CAP11XX_REG_LED_OUTPUT_CONTROL, 0xff, 0); | |
284 | if (error) | |
285 | return error; | |
286 | ||
287 | error = regmap_update_bits(priv->regmap, CAP11XX_REG_LED_DUTY_CYCLE_4, | |
288 | CAP11XX_REG_LED_DUTY_MAX_MASK, | |
289 | CAP11XX_REG_LED_DUTY_MAX_VALUE << | |
290 | CAP11XX_REG_LED_DUTY_MAX_MASK_SHIFT); | |
291 | if (error) | |
292 | return error; | |
293 | ||
294 | for_each_child_of_node(node, child) { | |
295 | u32 reg; | |
296 | ||
297 | led->cdev.name = | |
298 | of_get_property(child, "label", NULL) ? : child->name; | |
299 | led->cdev.default_trigger = | |
300 | of_get_property(child, "linux,default-trigger", NULL); | |
301 | led->cdev.flags = 0; | |
302 | led->cdev.brightness_set = cap11xx_led_set; | |
303 | led->cdev.max_brightness = 1; | |
304 | led->cdev.brightness = LED_OFF; | |
305 | ||
306 | error = of_property_read_u32(child, "reg", ®); | |
497e1b3f AKC |
307 | if (error != 0 || reg >= num_leds) { |
308 | of_node_put(child); | |
efe3b616 | 309 | return -EINVAL; |
497e1b3f | 310 | } |
efe3b616 MR |
311 | |
312 | led->reg = reg; | |
313 | led->priv = priv; | |
314 | ||
315 | INIT_WORK(&led->work, cap11xx_led_work); | |
316 | ||
317 | error = devm_led_classdev_register(dev, &led->cdev); | |
497e1b3f AKC |
318 | if (error) { |
319 | of_node_put(child); | |
efe3b616 | 320 | return error; |
497e1b3f | 321 | } |
efe3b616 MR |
322 | |
323 | priv->num_leds++; | |
324 | led++; | |
325 | } | |
326 | ||
327 | return 0; | |
328 | } | |
329 | #else | |
330 | static int cap11xx_init_leds(struct device *dev, | |
331 | struct cap11xx_priv *priv, int num_leds) | |
332 | { | |
333 | return 0; | |
334 | } | |
335 | #endif | |
336 | ||
c77fd0a4 MR |
337 | static int cap11xx_i2c_probe(struct i2c_client *i2c_client, |
338 | const struct i2c_device_id *id) | |
339 | { | |
340 | struct device *dev = &i2c_client->dev; | |
341 | struct cap11xx_priv *priv; | |
342 | struct device_node *node; | |
7609a5e9 | 343 | const struct cap11xx_hw_model *cap; |
c77fd0a4 MR |
344 | int i, error, irq, gain = 0; |
345 | unsigned int val, rev; | |
7609a5e9 | 346 | u32 gain32; |
c77fd0a4 | 347 | |
7609a5e9 MR |
348 | if (id->driver_data >= ARRAY_SIZE(cap11xx_devices)) { |
349 | dev_err(dev, "Invalid device ID %lu\n", id->driver_data); | |
350 | return -EINVAL; | |
351 | } | |
352 | ||
353 | cap = &cap11xx_devices[id->driver_data]; | |
354 | if (!cap || !cap->num_channels) { | |
355 | dev_err(dev, "Invalid device configuration\n"); | |
356 | return -EINVAL; | |
357 | } | |
358 | ||
359 | priv = devm_kzalloc(dev, | |
360 | sizeof(*priv) + | |
361 | cap->num_channels * sizeof(priv->keycodes[0]), | |
362 | GFP_KERNEL); | |
c77fd0a4 MR |
363 | if (!priv) |
364 | return -ENOMEM; | |
365 | ||
366 | priv->regmap = devm_regmap_init_i2c(i2c_client, &cap11xx_regmap_config); | |
367 | if (IS_ERR(priv->regmap)) | |
368 | return PTR_ERR(priv->regmap); | |
369 | ||
370 | error = regmap_read(priv->regmap, CAP11XX_REG_PRODUCT_ID, &val); | |
371 | if (error) | |
372 | return error; | |
373 | ||
7609a5e9 | 374 | if (val != cap->product_id) { |
c77fd0a4 | 375 | dev_err(dev, "Product ID: Got 0x%02x, expected 0x%02x\n", |
7609a5e9 MR |
376 | val, cap->product_id); |
377 | return -ENXIO; | |
c77fd0a4 MR |
378 | } |
379 | ||
380 | error = regmap_read(priv->regmap, CAP11XX_REG_MANUFACTURER_ID, &val); | |
381 | if (error) | |
382 | return error; | |
383 | ||
384 | if (val != CAP11XX_MANUFACTURER_ID) { | |
385 | dev_err(dev, "Manufacturer ID: Got 0x%02x, expected 0x%02x\n", | |
386 | val, CAP11XX_MANUFACTURER_ID); | |
7609a5e9 | 387 | return -ENXIO; |
c77fd0a4 MR |
388 | } |
389 | ||
390 | error = regmap_read(priv->regmap, CAP11XX_REG_REVISION, &rev); | |
391 | if (error < 0) | |
392 | return error; | |
393 | ||
394 | dev_info(dev, "CAP11XX detected, revision 0x%02x\n", rev); | |
395 | i2c_set_clientdata(i2c_client, priv); | |
396 | node = dev->of_node; | |
397 | ||
398 | if (!of_property_read_u32(node, "microchip,sensor-gain", &gain32)) { | |
399 | if (is_power_of_2(gain32) && gain32 <= 8) | |
400 | gain = ilog2(gain32); | |
401 | else | |
402 | dev_err(dev, "Invalid sensor-gain value %d\n", gain32); | |
403 | } | |
404 | ||
6bdd2fd1 MR |
405 | if (of_property_read_bool(node, "microchip,irq-active-high")) { |
406 | error = regmap_update_bits(priv->regmap, CAP11XX_REG_CONFIG2, | |
407 | CAP11XX_REG_CONFIG2_ALT_POL, 0); | |
408 | if (error) | |
409 | return error; | |
410 | } | |
411 | ||
c77fd0a4 | 412 | /* Provide some useful defaults */ |
7609a5e9 MR |
413 | for (i = 0; i < cap->num_channels; i++) |
414 | priv->keycodes[i] = KEY_A + i; | |
c77fd0a4 MR |
415 | |
416 | of_property_read_u32_array(node, "linux,keycodes", | |
7609a5e9 | 417 | priv->keycodes, cap->num_channels); |
c77fd0a4 MR |
418 | |
419 | error = regmap_update_bits(priv->regmap, CAP11XX_REG_MAIN_CONTROL, | |
420 | CAP11XX_REG_MAIN_CONTROL_GAIN_MASK, | |
421 | gain << CAP11XX_REG_MAIN_CONTROL_GAIN_SHIFT); | |
422 | if (error) | |
423 | return error; | |
424 | ||
425 | /* Disable autorepeat. The Linux input system has its own handling. */ | |
426 | error = regmap_write(priv->regmap, CAP11XX_REG_REPEAT_RATE, 0); | |
427 | if (error) | |
428 | return error; | |
429 | ||
430 | priv->idev = devm_input_allocate_device(dev); | |
431 | if (!priv->idev) | |
432 | return -ENOMEM; | |
433 | ||
434 | priv->idev->name = "CAP11XX capacitive touch sensor"; | |
435 | priv->idev->id.bustype = BUS_I2C; | |
436 | priv->idev->evbit[0] = BIT_MASK(EV_KEY); | |
437 | ||
438 | if (of_property_read_bool(node, "autorepeat")) | |
439 | __set_bit(EV_REP, priv->idev->evbit); | |
440 | ||
7609a5e9 | 441 | for (i = 0; i < cap->num_channels; i++) |
c77fd0a4 MR |
442 | __set_bit(priv->keycodes[i], priv->idev->keybit); |
443 | ||
444 | __clear_bit(KEY_RESERVED, priv->idev->keybit); | |
445 | ||
446 | priv->idev->keycode = priv->keycodes; | |
447 | priv->idev->keycodesize = sizeof(priv->keycodes[0]); | |
7609a5e9 | 448 | priv->idev->keycodemax = cap->num_channels; |
c77fd0a4 MR |
449 | |
450 | priv->idev->id.vendor = CAP11XX_MANUFACTURER_ID; | |
7609a5e9 | 451 | priv->idev->id.product = cap->product_id; |
c77fd0a4 MR |
452 | priv->idev->id.version = rev; |
453 | ||
454 | priv->idev->open = cap11xx_input_open; | |
455 | priv->idev->close = cap11xx_input_close; | |
456 | ||
efe3b616 MR |
457 | error = cap11xx_init_leds(dev, priv, cap->num_leds); |
458 | if (error) | |
459 | return error; | |
460 | ||
c77fd0a4 MR |
461 | input_set_drvdata(priv->idev, priv); |
462 | ||
463 | /* | |
464 | * Put the device in deep sleep mode for now. | |
465 | * ->open() will bring it back once the it is actually needed. | |
466 | */ | |
467 | cap11xx_set_sleep(priv, true); | |
468 | ||
469 | error = input_register_device(priv->idev); | |
470 | if (error) | |
471 | return error; | |
472 | ||
473 | irq = irq_of_parse_and_map(node, 0); | |
474 | if (!irq) { | |
475 | dev_err(dev, "Unable to parse or map IRQ\n"); | |
476 | return -ENXIO; | |
477 | } | |
478 | ||
479 | error = devm_request_threaded_irq(dev, irq, NULL, cap11xx_thread_func, | |
480 | IRQF_ONESHOT, dev_name(dev), priv); | |
481 | if (error) | |
482 | return error; | |
483 | ||
484 | return 0; | |
485 | } | |
486 | ||
487 | static const struct of_device_id cap11xx_dt_ids[] = { | |
488 | { .compatible = "microchip,cap1106", }, | |
7609a5e9 MR |
489 | { .compatible = "microchip,cap1126", }, |
490 | { .compatible = "microchip,cap1188", }, | |
c77fd0a4 MR |
491 | {} |
492 | }; | |
493 | MODULE_DEVICE_TABLE(of, cap11xx_dt_ids); | |
494 | ||
495 | static const struct i2c_device_id cap11xx_i2c_ids[] = { | |
7609a5e9 MR |
496 | { "cap1106", CAP1106 }, |
497 | { "cap1126", CAP1126 }, | |
498 | { "cap1188", CAP1188 }, | |
c77fd0a4 MR |
499 | {} |
500 | }; | |
501 | MODULE_DEVICE_TABLE(i2c, cap11xx_i2c_ids); | |
502 | ||
503 | static struct i2c_driver cap11xx_i2c_driver = { | |
504 | .driver = { | |
505 | .name = "cap11xx", | |
c77fd0a4 MR |
506 | .of_match_table = cap11xx_dt_ids, |
507 | }, | |
508 | .id_table = cap11xx_i2c_ids, | |
509 | .probe = cap11xx_i2c_probe, | |
510 | }; | |
511 | ||
512 | module_i2c_driver(cap11xx_i2c_driver); | |
513 | ||
c77fd0a4 MR |
514 | MODULE_DESCRIPTION("Microchip CAP11XX driver"); |
515 | MODULE_AUTHOR("Daniel Mack <linux@zonque.org>"); | |
516 | MODULE_LICENSE("GPL v2"); |