1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * Description:  keypad driver for ADP5589, ADP5585
4  *		 I2C QWERTY Keypad and IO Expander
5  * Bugs: Enter bugs at http://blackfin.uclinux.org/
6  *
7  * Copyright (C) 2010-2011 Analog Devices Inc.
8  */
9 
10 #include <linux/module.h>
11 #include <linux/interrupt.h>
12 #include <linux/irq.h>
13 #include <linux/workqueue.h>
14 #include <linux/errno.h>
15 #include <linux/pm.h>
16 #include <linux/platform_device.h>
17 #include <linux/input.h>
18 #include <linux/i2c.h>
19 #include <linux/gpio.h>
20 #include <linux/slab.h>
21 
22 #include <linux/input/adp5589.h>
23 
24 /* ADP5589/ADP5585 Common Registers */
25 #define ADP5589_5_ID			0x00
26 #define ADP5589_5_INT_STATUS		0x01
27 #define ADP5589_5_STATUS		0x02
28 #define ADP5589_5_FIFO_1		0x03
29 #define ADP5589_5_FIFO_2		0x04
30 #define ADP5589_5_FIFO_3		0x05
31 #define ADP5589_5_FIFO_4		0x06
32 #define ADP5589_5_FIFO_5		0x07
33 #define ADP5589_5_FIFO_6		0x08
34 #define ADP5589_5_FIFO_7		0x09
35 #define ADP5589_5_FIFO_8		0x0A
36 #define ADP5589_5_FIFO_9		0x0B
37 #define ADP5589_5_FIFO_10		0x0C
38 #define ADP5589_5_FIFO_11		0x0D
39 #define ADP5589_5_FIFO_12		0x0E
40 #define ADP5589_5_FIFO_13		0x0F
41 #define ADP5589_5_FIFO_14		0x10
42 #define ADP5589_5_FIFO_15		0x11
43 #define ADP5589_5_FIFO_16		0x12
44 #define ADP5589_5_GPI_INT_STAT_A	0x13
45 #define ADP5589_5_GPI_INT_STAT_B	0x14
46 
47 /* ADP5589 Registers */
48 #define ADP5589_GPI_INT_STAT_C		0x15
49 #define ADP5589_GPI_STATUS_A		0x16
50 #define ADP5589_GPI_STATUS_B		0x17
51 #define ADP5589_GPI_STATUS_C		0x18
52 #define ADP5589_RPULL_CONFIG_A		0x19
53 #define ADP5589_RPULL_CONFIG_B		0x1A
54 #define ADP5589_RPULL_CONFIG_C		0x1B
55 #define ADP5589_RPULL_CONFIG_D		0x1C
56 #define ADP5589_RPULL_CONFIG_E		0x1D
57 #define ADP5589_GPI_INT_LEVEL_A		0x1E
58 #define ADP5589_GPI_INT_LEVEL_B		0x1F
59 #define ADP5589_GPI_INT_LEVEL_C		0x20
60 #define ADP5589_GPI_EVENT_EN_A		0x21
61 #define ADP5589_GPI_EVENT_EN_B		0x22
62 #define ADP5589_GPI_EVENT_EN_C		0x23
63 #define ADP5589_GPI_INTERRUPT_EN_A	0x24
64 #define ADP5589_GPI_INTERRUPT_EN_B	0x25
65 #define ADP5589_GPI_INTERRUPT_EN_C	0x26
66 #define ADP5589_DEBOUNCE_DIS_A		0x27
67 #define ADP5589_DEBOUNCE_DIS_B		0x28
68 #define ADP5589_DEBOUNCE_DIS_C		0x29
69 #define ADP5589_GPO_DATA_OUT_A		0x2A
70 #define ADP5589_GPO_DATA_OUT_B		0x2B
71 #define ADP5589_GPO_DATA_OUT_C		0x2C
72 #define ADP5589_GPO_OUT_MODE_A		0x2D
73 #define ADP5589_GPO_OUT_MODE_B		0x2E
74 #define ADP5589_GPO_OUT_MODE_C		0x2F
75 #define ADP5589_GPIO_DIRECTION_A	0x30
76 #define ADP5589_GPIO_DIRECTION_B	0x31
77 #define ADP5589_GPIO_DIRECTION_C	0x32
78 #define ADP5589_UNLOCK1			0x33
79 #define ADP5589_UNLOCK2			0x34
80 #define ADP5589_EXT_LOCK_EVENT		0x35
81 #define ADP5589_UNLOCK_TIMERS		0x36
82 #define ADP5589_LOCK_CFG		0x37
83 #define ADP5589_RESET1_EVENT_A		0x38
84 #define ADP5589_RESET1_EVENT_B		0x39
85 #define ADP5589_RESET1_EVENT_C		0x3A
86 #define ADP5589_RESET2_EVENT_A		0x3B
87 #define ADP5589_RESET2_EVENT_B		0x3C
88 #define ADP5589_RESET_CFG		0x3D
89 #define ADP5589_PWM_OFFT_LOW		0x3E
90 #define ADP5589_PWM_OFFT_HIGH		0x3F
91 #define ADP5589_PWM_ONT_LOW		0x40
92 #define ADP5589_PWM_ONT_HIGH		0x41
93 #define ADP5589_PWM_CFG			0x42
94 #define ADP5589_CLOCK_DIV_CFG		0x43
95 #define ADP5589_LOGIC_1_CFG		0x44
96 #define ADP5589_LOGIC_2_CFG		0x45
97 #define ADP5589_LOGIC_FF_CFG		0x46
98 #define ADP5589_LOGIC_INT_EVENT_EN	0x47
99 #define ADP5589_POLL_PTIME_CFG		0x48
100 #define ADP5589_PIN_CONFIG_A		0x49
101 #define ADP5589_PIN_CONFIG_B		0x4A
102 #define ADP5589_PIN_CONFIG_C		0x4B
103 #define ADP5589_PIN_CONFIG_D		0x4C
104 #define ADP5589_GENERAL_CFG		0x4D
105 #define ADP5589_INT_EN			0x4E
106 
107 /* ADP5585 Registers */
108 #define ADP5585_GPI_STATUS_A		0x15
109 #define ADP5585_GPI_STATUS_B		0x16
110 #define ADP5585_RPULL_CONFIG_A		0x17
111 #define ADP5585_RPULL_CONFIG_B		0x18
112 #define ADP5585_RPULL_CONFIG_C		0x19
113 #define ADP5585_RPULL_CONFIG_D		0x1A
114 #define ADP5585_GPI_INT_LEVEL_A		0x1B
115 #define ADP5585_GPI_INT_LEVEL_B		0x1C
116 #define ADP5585_GPI_EVENT_EN_A		0x1D
117 #define ADP5585_GPI_EVENT_EN_B		0x1E
118 #define ADP5585_GPI_INTERRUPT_EN_A	0x1F
119 #define ADP5585_GPI_INTERRUPT_EN_B	0x20
120 #define ADP5585_DEBOUNCE_DIS_A		0x21
121 #define ADP5585_DEBOUNCE_DIS_B		0x22
122 #define ADP5585_GPO_DATA_OUT_A		0x23
123 #define ADP5585_GPO_DATA_OUT_B		0x24
124 #define ADP5585_GPO_OUT_MODE_A		0x25
125 #define ADP5585_GPO_OUT_MODE_B		0x26
126 #define ADP5585_GPIO_DIRECTION_A	0x27
127 #define ADP5585_GPIO_DIRECTION_B	0x28
128 #define ADP5585_RESET1_EVENT_A		0x29
129 #define ADP5585_RESET1_EVENT_B		0x2A
130 #define ADP5585_RESET1_EVENT_C		0x2B
131 #define ADP5585_RESET2_EVENT_A		0x2C
132 #define ADP5585_RESET2_EVENT_B		0x2D
133 #define ADP5585_RESET_CFG		0x2E
134 #define ADP5585_PWM_OFFT_LOW		0x2F
135 #define ADP5585_PWM_OFFT_HIGH		0x30
136 #define ADP5585_PWM_ONT_LOW		0x31
137 #define ADP5585_PWM_ONT_HIGH		0x32
138 #define ADP5585_PWM_CFG			0x33
139 #define ADP5585_LOGIC_CFG		0x34
140 #define ADP5585_LOGIC_FF_CFG		0x35
141 #define ADP5585_LOGIC_INT_EVENT_EN	0x36
142 #define ADP5585_POLL_PTIME_CFG		0x37
143 #define ADP5585_PIN_CONFIG_A		0x38
144 #define ADP5585_PIN_CONFIG_B		0x39
145 #define ADP5585_PIN_CONFIG_D		0x3A
146 #define ADP5585_GENERAL_CFG		0x3B
147 #define ADP5585_INT_EN			0x3C
148 
149 /* ID Register */
150 #define ADP5589_5_DEVICE_ID_MASK	0xF
151 #define ADP5589_5_MAN_ID_MASK		0xF
152 #define ADP5589_5_MAN_ID_SHIFT		4
153 #define ADP5589_5_MAN_ID		0x02
154 
155 /* GENERAL_CFG Register */
156 #define OSC_EN		(1 << 7)
157 #define CORE_CLK(x)	(((x) & 0x3) << 5)
158 #define LCK_TRK_LOGIC	(1 << 4)	/* ADP5589 only */
159 #define LCK_TRK_GPI	(1 << 3)	/* ADP5589 only */
160 #define INT_CFG		(1 << 1)
161 #define RST_CFG		(1 << 0)
162 
163 /* INT_EN Register */
164 #define LOGIC2_IEN	(1 << 5)	/* ADP5589 only */
165 #define LOGIC1_IEN	(1 << 4)
166 #define LOCK_IEN	(1 << 3)	/* ADP5589 only */
167 #define OVRFLOW_IEN	(1 << 2)
168 #define GPI_IEN		(1 << 1)
169 #define EVENT_IEN	(1 << 0)
170 
171 /* Interrupt Status Register */
172 #define LOGIC2_INT	(1 << 5)	/* ADP5589 only */
173 #define LOGIC1_INT	(1 << 4)
174 #define LOCK_INT	(1 << 3)	/* ADP5589 only */
175 #define OVRFLOW_INT	(1 << 2)
176 #define GPI_INT		(1 << 1)
177 #define EVENT_INT	(1 << 0)
178 
179 /* STATUS Register */
180 #define LOGIC2_STAT	(1 << 7)	/* ADP5589 only */
181 #define LOGIC1_STAT	(1 << 6)
182 #define LOCK_STAT	(1 << 5)	/* ADP5589 only */
183 #define KEC		0x1F
184 
185 /* PIN_CONFIG_D Register */
186 #define C4_EXTEND_CFG	(1 << 6)	/* RESET2 */
187 #define R4_EXTEND_CFG	(1 << 5)	/* RESET1 */
188 
189 /* LOCK_CFG */
190 #define LOCK_EN		(1 << 0)
191 
192 #define PTIME_MASK	0x3
193 #define LTIME_MASK	0x3		/* ADP5589 only */
194 
195 /* Key Event Register xy */
196 #define KEY_EV_PRESSED		(1 << 7)
197 #define KEY_EV_MASK		(0x7F)
198 
199 #define KEYP_MAX_EVENT		16
200 #define ADP5589_MAXGPIO		19
201 #define ADP5585_MAXGPIO		11 /* 10 on the ADP5585-01, 11 on ADP5585-02 */
202 
203 enum {
204 	ADP5589,
205 	ADP5585_01,
206 	ADP5585_02
207 };
208 
209 struct adp_constants {
210 	u8 maxgpio;
211 	u8 keymapsize;
212 	u8 gpi_pin_row_base;
213 	u8 gpi_pin_row_end;
214 	u8 gpi_pin_col_base;
215 	u8 gpi_pin_base;
216 	u8 gpi_pin_end;
217 	u8 gpimapsize_max;
218 	u8 max_row_num;
219 	u8 max_col_num;
220 	u8 row_mask;
221 	u8 col_mask;
222 	u8 col_shift;
223 	u8 c4_extend_cfg;
224 	u8 (*bank) (u8 offset);
225 	u8 (*bit) (u8 offset);
226 	u8 (*reg) (u8 reg);
227 };
228 
229 struct adp5589_kpad {
230 	struct i2c_client *client;
231 	struct input_dev *input;
232 	const struct adp_constants *var;
233 	unsigned short keycode[ADP5589_KEYMAPSIZE];
234 	const struct adp5589_gpi_map *gpimap;
235 	unsigned short gpimapsize;
236 	unsigned extend_cfg;
237 	bool is_adp5585;
238 	bool support_row5;
239 #ifdef CONFIG_GPIOLIB
240 	unsigned char gpiomap[ADP5589_MAXGPIO];
241 	bool export_gpio;
242 	struct gpio_chip gc;
243 	struct mutex gpio_lock;	/* Protect cached dir, dat_out */
244 	u8 dat_out[3];
245 	u8 dir[3];
246 #endif
247 };
248 
249 /*
250  *  ADP5589 / ADP5585 derivative / variant handling
251  */
252 
253 
254 /* ADP5589 */
255 
256 static unsigned char adp5589_bank(unsigned char offset)
257 {
258 	return offset >> 3;
259 }
260 
261 static unsigned char adp5589_bit(unsigned char offset)
262 {
263 	return 1u << (offset & 0x7);
264 }
265 
266 static unsigned char adp5589_reg(unsigned char reg)
267 {
268 	return reg;
269 }
270 
271 static const struct adp_constants const_adp5589 = {
272 	.maxgpio		= ADP5589_MAXGPIO,
273 	.keymapsize		= ADP5589_KEYMAPSIZE,
274 	.gpi_pin_row_base	= ADP5589_GPI_PIN_ROW_BASE,
275 	.gpi_pin_row_end	= ADP5589_GPI_PIN_ROW_END,
276 	.gpi_pin_col_base	= ADP5589_GPI_PIN_COL_BASE,
277 	.gpi_pin_base		= ADP5589_GPI_PIN_BASE,
278 	.gpi_pin_end		= ADP5589_GPI_PIN_END,
279 	.gpimapsize_max		= ADP5589_GPIMAPSIZE_MAX,
280 	.c4_extend_cfg		= 12,
281 	.max_row_num		= ADP5589_MAX_ROW_NUM,
282 	.max_col_num		= ADP5589_MAX_COL_NUM,
283 	.row_mask		= ADP5589_ROW_MASK,
284 	.col_mask		= ADP5589_COL_MASK,
285 	.col_shift		= ADP5589_COL_SHIFT,
286 	.bank			= adp5589_bank,
287 	.bit			= adp5589_bit,
288 	.reg			= adp5589_reg,
289 };
290 
291 /* ADP5585 */
292 
293 static unsigned char adp5585_bank(unsigned char offset)
294 {
295 	return offset > ADP5585_MAX_ROW_NUM;
296 }
297 
298 static unsigned char adp5585_bit(unsigned char offset)
299 {
300 	return (offset > ADP5585_MAX_ROW_NUM) ?
301 		1u << (offset - ADP5585_COL_SHIFT) : 1u << offset;
302 }
303 
304 static const unsigned char adp5585_reg_lut[] = {
305 	[ADP5589_GPI_STATUS_A]		= ADP5585_GPI_STATUS_A,
306 	[ADP5589_GPI_STATUS_B]		= ADP5585_GPI_STATUS_B,
307 	[ADP5589_RPULL_CONFIG_A]	= ADP5585_RPULL_CONFIG_A,
308 	[ADP5589_RPULL_CONFIG_B]	= ADP5585_RPULL_CONFIG_B,
309 	[ADP5589_RPULL_CONFIG_C]	= ADP5585_RPULL_CONFIG_C,
310 	[ADP5589_RPULL_CONFIG_D]	= ADP5585_RPULL_CONFIG_D,
311 	[ADP5589_GPI_INT_LEVEL_A]	= ADP5585_GPI_INT_LEVEL_A,
312 	[ADP5589_GPI_INT_LEVEL_B]	= ADP5585_GPI_INT_LEVEL_B,
313 	[ADP5589_GPI_EVENT_EN_A]	= ADP5585_GPI_EVENT_EN_A,
314 	[ADP5589_GPI_EVENT_EN_B]	= ADP5585_GPI_EVENT_EN_B,
315 	[ADP5589_GPI_INTERRUPT_EN_A]	= ADP5585_GPI_INTERRUPT_EN_A,
316 	[ADP5589_GPI_INTERRUPT_EN_B]	= ADP5585_GPI_INTERRUPT_EN_B,
317 	[ADP5589_DEBOUNCE_DIS_A]	= ADP5585_DEBOUNCE_DIS_A,
318 	[ADP5589_DEBOUNCE_DIS_B]	= ADP5585_DEBOUNCE_DIS_B,
319 	[ADP5589_GPO_DATA_OUT_A]	= ADP5585_GPO_DATA_OUT_A,
320 	[ADP5589_GPO_DATA_OUT_B]	= ADP5585_GPO_DATA_OUT_B,
321 	[ADP5589_GPO_OUT_MODE_A]	= ADP5585_GPO_OUT_MODE_A,
322 	[ADP5589_GPO_OUT_MODE_B]	= ADP5585_GPO_OUT_MODE_B,
323 	[ADP5589_GPIO_DIRECTION_A]	= ADP5585_GPIO_DIRECTION_A,
324 	[ADP5589_GPIO_DIRECTION_B]	= ADP5585_GPIO_DIRECTION_B,
325 	[ADP5589_RESET1_EVENT_A]	= ADP5585_RESET1_EVENT_A,
326 	[ADP5589_RESET1_EVENT_B]	= ADP5585_RESET1_EVENT_B,
327 	[ADP5589_RESET1_EVENT_C]	= ADP5585_RESET1_EVENT_C,
328 	[ADP5589_RESET2_EVENT_A]	= ADP5585_RESET2_EVENT_A,
329 	[ADP5589_RESET2_EVENT_B]	= ADP5585_RESET2_EVENT_B,
330 	[ADP5589_RESET_CFG]		= ADP5585_RESET_CFG,
331 	[ADP5589_PWM_OFFT_LOW]		= ADP5585_PWM_OFFT_LOW,
332 	[ADP5589_PWM_OFFT_HIGH]		= ADP5585_PWM_OFFT_HIGH,
333 	[ADP5589_PWM_ONT_LOW]		= ADP5585_PWM_ONT_LOW,
334 	[ADP5589_PWM_ONT_HIGH]		= ADP5585_PWM_ONT_HIGH,
335 	[ADP5589_PWM_CFG]		= ADP5585_PWM_CFG,
336 	[ADP5589_LOGIC_1_CFG]		= ADP5585_LOGIC_CFG,
337 	[ADP5589_LOGIC_FF_CFG]		= ADP5585_LOGIC_FF_CFG,
338 	[ADP5589_LOGIC_INT_EVENT_EN]	= ADP5585_LOGIC_INT_EVENT_EN,
339 	[ADP5589_POLL_PTIME_CFG]	= ADP5585_POLL_PTIME_CFG,
340 	[ADP5589_PIN_CONFIG_A]		= ADP5585_PIN_CONFIG_A,
341 	[ADP5589_PIN_CONFIG_B]		= ADP5585_PIN_CONFIG_B,
342 	[ADP5589_PIN_CONFIG_D]		= ADP5585_PIN_CONFIG_D,
343 	[ADP5589_GENERAL_CFG]		= ADP5585_GENERAL_CFG,
344 	[ADP5589_INT_EN]		= ADP5585_INT_EN,
345 };
346 
347 static unsigned char adp5585_reg(unsigned char reg)
348 {
349 	return adp5585_reg_lut[reg];
350 }
351 
352 static const struct adp_constants const_adp5585 = {
353 	.maxgpio		= ADP5585_MAXGPIO,
354 	.keymapsize		= ADP5585_KEYMAPSIZE,
355 	.gpi_pin_row_base	= ADP5585_GPI_PIN_ROW_BASE,
356 	.gpi_pin_row_end	= ADP5585_GPI_PIN_ROW_END,
357 	.gpi_pin_col_base	= ADP5585_GPI_PIN_COL_BASE,
358 	.gpi_pin_base		= ADP5585_GPI_PIN_BASE,
359 	.gpi_pin_end		= ADP5585_GPI_PIN_END,
360 	.gpimapsize_max		= ADP5585_GPIMAPSIZE_MAX,
361 	.c4_extend_cfg		= 10,
362 	.max_row_num		= ADP5585_MAX_ROW_NUM,
363 	.max_col_num		= ADP5585_MAX_COL_NUM,
364 	.row_mask		= ADP5585_ROW_MASK,
365 	.col_mask		= ADP5585_COL_MASK,
366 	.col_shift		= ADP5585_COL_SHIFT,
367 	.bank			= adp5585_bank,
368 	.bit			= adp5585_bit,
369 	.reg			= adp5585_reg,
370 };
371 
372 static int adp5589_read(struct i2c_client *client, u8 reg)
373 {
374 	int ret = i2c_smbus_read_byte_data(client, reg);
375 
376 	if (ret < 0)
377 		dev_err(&client->dev, "Read Error\n");
378 
379 	return ret;
380 }
381 
382 static int adp5589_write(struct i2c_client *client, u8 reg, u8 val)
383 {
384 	return i2c_smbus_write_byte_data(client, reg, val);
385 }
386 
387 #ifdef CONFIG_GPIOLIB
388 static int adp5589_gpio_get_value(struct gpio_chip *chip, unsigned off)
389 {
390 	struct adp5589_kpad *kpad = gpiochip_get_data(chip);
391 	unsigned int bank = kpad->var->bank(kpad->gpiomap[off]);
392 	unsigned int bit = kpad->var->bit(kpad->gpiomap[off]);
393 
394 	return !!(adp5589_read(kpad->client,
395 			       kpad->var->reg(ADP5589_GPI_STATUS_A) + bank) &
396 			       bit);
397 }
398 
399 static void adp5589_gpio_set_value(struct gpio_chip *chip,
400 				   unsigned off, int val)
401 {
402 	struct adp5589_kpad *kpad = gpiochip_get_data(chip);
403 	unsigned int bank = kpad->var->bank(kpad->gpiomap[off]);
404 	unsigned int bit = kpad->var->bit(kpad->gpiomap[off]);
405 
406 	mutex_lock(&kpad->gpio_lock);
407 
408 	if (val)
409 		kpad->dat_out[bank] |= bit;
410 	else
411 		kpad->dat_out[bank] &= ~bit;
412 
413 	adp5589_write(kpad->client, kpad->var->reg(ADP5589_GPO_DATA_OUT_A) +
414 		      bank, kpad->dat_out[bank]);
415 
416 	mutex_unlock(&kpad->gpio_lock);
417 }
418 
419 static int adp5589_gpio_direction_input(struct gpio_chip *chip, unsigned off)
420 {
421 	struct adp5589_kpad *kpad = gpiochip_get_data(chip);
422 	unsigned int bank = kpad->var->bank(kpad->gpiomap[off]);
423 	unsigned int bit = kpad->var->bit(kpad->gpiomap[off]);
424 	int ret;
425 
426 	mutex_lock(&kpad->gpio_lock);
427 
428 	kpad->dir[bank] &= ~bit;
429 	ret = adp5589_write(kpad->client,
430 			    kpad->var->reg(ADP5589_GPIO_DIRECTION_A) + bank,
431 			    kpad->dir[bank]);
432 
433 	mutex_unlock(&kpad->gpio_lock);
434 
435 	return ret;
436 }
437 
438 static int adp5589_gpio_direction_output(struct gpio_chip *chip,
439 					 unsigned off, int val)
440 {
441 	struct adp5589_kpad *kpad = gpiochip_get_data(chip);
442 	unsigned int bank = kpad->var->bank(kpad->gpiomap[off]);
443 	unsigned int bit = kpad->var->bit(kpad->gpiomap[off]);
444 	int ret;
445 
446 	mutex_lock(&kpad->gpio_lock);
447 
448 	kpad->dir[bank] |= bit;
449 
450 	if (val)
451 		kpad->dat_out[bank] |= bit;
452 	else
453 		kpad->dat_out[bank] &= ~bit;
454 
455 	ret = adp5589_write(kpad->client, kpad->var->reg(ADP5589_GPO_DATA_OUT_A)
456 			    + bank, kpad->dat_out[bank]);
457 	ret |= adp5589_write(kpad->client,
458 			     kpad->var->reg(ADP5589_GPIO_DIRECTION_A) + bank,
459 			     kpad->dir[bank]);
460 
461 	mutex_unlock(&kpad->gpio_lock);
462 
463 	return ret;
464 }
465 
466 static int adp5589_build_gpiomap(struct adp5589_kpad *kpad,
467 				const struct adp5589_kpad_platform_data *pdata)
468 {
469 	bool pin_used[ADP5589_MAXGPIO];
470 	int n_unused = 0;
471 	int i;
472 
473 	memset(pin_used, false, sizeof(pin_used));
474 
475 	for (i = 0; i < kpad->var->maxgpio; i++)
476 		if (pdata->keypad_en_mask & (1 << i))
477 			pin_used[i] = true;
478 
479 	for (i = 0; i < kpad->gpimapsize; i++)
480 		pin_used[kpad->gpimap[i].pin - kpad->var->gpi_pin_base] = true;
481 
482 	if (kpad->extend_cfg & R4_EXTEND_CFG)
483 		pin_used[4] = true;
484 
485 	if (kpad->extend_cfg & C4_EXTEND_CFG)
486 		pin_used[kpad->var->c4_extend_cfg] = true;
487 
488 	if (!kpad->support_row5)
489 		pin_used[5] = true;
490 
491 	for (i = 0; i < kpad->var->maxgpio; i++)
492 		if (!pin_used[i])
493 			kpad->gpiomap[n_unused++] = i;
494 
495 	return n_unused;
496 }
497 
498 static int adp5589_gpio_add(struct adp5589_kpad *kpad)
499 {
500 	struct device *dev = &kpad->client->dev;
501 	const struct adp5589_kpad_platform_data *pdata = dev_get_platdata(dev);
502 	const struct adp5589_gpio_platform_data *gpio_data = pdata->gpio_data;
503 	int i, error;
504 
505 	if (!gpio_data)
506 		return 0;
507 
508 	kpad->gc.parent = dev;
509 	kpad->gc.ngpio = adp5589_build_gpiomap(kpad, pdata);
510 	if (kpad->gc.ngpio == 0) {
511 		dev_info(dev, "No unused gpios left to export\n");
512 		return 0;
513 	}
514 
515 	kpad->export_gpio = true;
516 
517 	kpad->gc.direction_input = adp5589_gpio_direction_input;
518 	kpad->gc.direction_output = adp5589_gpio_direction_output;
519 	kpad->gc.get = adp5589_gpio_get_value;
520 	kpad->gc.set = adp5589_gpio_set_value;
521 	kpad->gc.can_sleep = 1;
522 
523 	kpad->gc.base = gpio_data->gpio_start;
524 	kpad->gc.label = kpad->client->name;
525 	kpad->gc.owner = THIS_MODULE;
526 
527 	mutex_init(&kpad->gpio_lock);
528 
529 	error = gpiochip_add_data(&kpad->gc, kpad);
530 	if (error) {
531 		dev_err(dev, "gpiochip_add_data() failed, err: %d\n", error);
532 		return error;
533 	}
534 
535 	for (i = 0; i <= kpad->var->bank(kpad->var->maxgpio); i++) {
536 		kpad->dat_out[i] = adp5589_read(kpad->client, kpad->var->reg(
537 						ADP5589_GPO_DATA_OUT_A) + i);
538 		kpad->dir[i] = adp5589_read(kpad->client, kpad->var->reg(
539 					    ADP5589_GPIO_DIRECTION_A) + i);
540 	}
541 
542 	if (gpio_data->setup) {
543 		error = gpio_data->setup(kpad->client,
544 					 kpad->gc.base, kpad->gc.ngpio,
545 					 gpio_data->context);
546 		if (error)
547 			dev_warn(dev, "setup failed, %d\n", error);
548 	}
549 
550 	return 0;
551 }
552 
553 static void adp5589_gpio_remove(struct adp5589_kpad *kpad)
554 {
555 	struct device *dev = &kpad->client->dev;
556 	const struct adp5589_kpad_platform_data *pdata = dev_get_platdata(dev);
557 	const struct adp5589_gpio_platform_data *gpio_data = pdata->gpio_data;
558 	int error;
559 
560 	if (!kpad->export_gpio)
561 		return;
562 
563 	if (gpio_data->teardown) {
564 		error = gpio_data->teardown(kpad->client,
565 					    kpad->gc.base, kpad->gc.ngpio,
566 					    gpio_data->context);
567 		if (error)
568 			dev_warn(dev, "teardown failed %d\n", error);
569 	}
570 
571 	gpiochip_remove(&kpad->gc);
572 }
573 #else
574 static inline int adp5589_gpio_add(struct adp5589_kpad *kpad)
575 {
576 	return 0;
577 }
578 
579 static inline void adp5589_gpio_remove(struct adp5589_kpad *kpad)
580 {
581 }
582 #endif
583 
584 static void adp5589_report_switches(struct adp5589_kpad *kpad,
585 				    int key, int key_val)
586 {
587 	int i;
588 
589 	for (i = 0; i < kpad->gpimapsize; i++) {
590 		if (key_val == kpad->gpimap[i].pin) {
591 			input_report_switch(kpad->input,
592 					    kpad->gpimap[i].sw_evt,
593 					    key & KEY_EV_PRESSED);
594 			break;
595 		}
596 	}
597 }
598 
599 static void adp5589_report_events(struct adp5589_kpad *kpad, int ev_cnt)
600 {
601 	int i;
602 
603 	for (i = 0; i < ev_cnt; i++) {
604 		int key = adp5589_read(kpad->client, ADP5589_5_FIFO_1 + i);
605 		int key_val = key & KEY_EV_MASK;
606 
607 		if (key_val >= kpad->var->gpi_pin_base &&
608 		    key_val <= kpad->var->gpi_pin_end) {
609 			adp5589_report_switches(kpad, key, key_val);
610 		} else {
611 			input_report_key(kpad->input,
612 					 kpad->keycode[key_val - 1],
613 					 key & KEY_EV_PRESSED);
614 		}
615 	}
616 }
617 
618 static irqreturn_t adp5589_irq(int irq, void *handle)
619 {
620 	struct adp5589_kpad *kpad = handle;
621 	struct i2c_client *client = kpad->client;
622 	int status, ev_cnt;
623 
624 	status = adp5589_read(client, ADP5589_5_INT_STATUS);
625 
626 	if (status & OVRFLOW_INT)	/* Unlikely and should never happen */
627 		dev_err(&client->dev, "Event Overflow Error\n");
628 
629 	if (status & EVENT_INT) {
630 		ev_cnt = adp5589_read(client, ADP5589_5_STATUS) & KEC;
631 		if (ev_cnt) {
632 			adp5589_report_events(kpad, ev_cnt);
633 			input_sync(kpad->input);
634 		}
635 	}
636 
637 	adp5589_write(client, ADP5589_5_INT_STATUS, status); /* Status is W1C */
638 
639 	return IRQ_HANDLED;
640 }
641 
642 static int adp5589_get_evcode(struct adp5589_kpad *kpad, unsigned short key)
643 {
644 	int i;
645 
646 	for (i = 0; i < kpad->var->keymapsize; i++)
647 		if (key == kpad->keycode[i])
648 			return (i + 1) | KEY_EV_PRESSED;
649 
650 	dev_err(&kpad->client->dev, "RESET/UNLOCK key not in keycode map\n");
651 
652 	return -EINVAL;
653 }
654 
655 static int adp5589_setup(struct adp5589_kpad *kpad)
656 {
657 	struct i2c_client *client = kpad->client;
658 	const struct adp5589_kpad_platform_data *pdata =
659 		dev_get_platdata(&client->dev);
660 	u8 (*reg) (u8) = kpad->var->reg;
661 	unsigned char evt_mode1 = 0, evt_mode2 = 0, evt_mode3 = 0;
662 	unsigned char pull_mask = 0;
663 	int i, ret;
664 
665 	ret = adp5589_write(client, reg(ADP5589_PIN_CONFIG_A),
666 			    pdata->keypad_en_mask & kpad->var->row_mask);
667 	ret |= adp5589_write(client, reg(ADP5589_PIN_CONFIG_B),
668 			     (pdata->keypad_en_mask >> kpad->var->col_shift) &
669 			     kpad->var->col_mask);
670 
671 	if (!kpad->is_adp5585)
672 		ret |= adp5589_write(client, ADP5589_PIN_CONFIG_C,
673 				     (pdata->keypad_en_mask >> 16) & 0xFF);
674 
675 	if (!kpad->is_adp5585 && pdata->en_keylock) {
676 		ret |= adp5589_write(client, ADP5589_UNLOCK1,
677 				     pdata->unlock_key1);
678 		ret |= adp5589_write(client, ADP5589_UNLOCK2,
679 				     pdata->unlock_key2);
680 		ret |= adp5589_write(client, ADP5589_UNLOCK_TIMERS,
681 				     pdata->unlock_timer & LTIME_MASK);
682 		ret |= adp5589_write(client, ADP5589_LOCK_CFG, LOCK_EN);
683 	}
684 
685 	for (i = 0; i < KEYP_MAX_EVENT; i++)
686 		ret |= adp5589_read(client, ADP5589_5_FIFO_1 + i);
687 
688 	for (i = 0; i < pdata->gpimapsize; i++) {
689 		unsigned short pin = pdata->gpimap[i].pin;
690 
691 		if (pin <= kpad->var->gpi_pin_row_end) {
692 			evt_mode1 |= (1 << (pin - kpad->var->gpi_pin_row_base));
693 		} else {
694 			evt_mode2 |=
695 			    ((1 << (pin - kpad->var->gpi_pin_col_base)) & 0xFF);
696 			if (!kpad->is_adp5585)
697 				evt_mode3 |= ((1 << (pin -
698 					kpad->var->gpi_pin_col_base)) >> 8);
699 		}
700 	}
701 
702 	if (pdata->gpimapsize) {
703 		ret |= adp5589_write(client, reg(ADP5589_GPI_EVENT_EN_A),
704 				     evt_mode1);
705 		ret |= adp5589_write(client, reg(ADP5589_GPI_EVENT_EN_B),
706 				     evt_mode2);
707 		if (!kpad->is_adp5585)
708 			ret |= adp5589_write(client,
709 					     reg(ADP5589_GPI_EVENT_EN_C),
710 					     evt_mode3);
711 	}
712 
713 	if (pdata->pull_dis_mask & pdata->pullup_en_100k &
714 		pdata->pullup_en_300k & pdata->pulldown_en_300k)
715 		dev_warn(&client->dev, "Conflicting pull resistor config\n");
716 
717 	for (i = 0; i <= kpad->var->max_row_num; i++) {
718 		unsigned val = 0, bit = (1 << i);
719 		if (pdata->pullup_en_300k & bit)
720 			val = 0;
721 		else if (pdata->pulldown_en_300k & bit)
722 			val = 1;
723 		else if (pdata->pullup_en_100k & bit)
724 			val = 2;
725 		else if (pdata->pull_dis_mask & bit)
726 			val = 3;
727 
728 		pull_mask |= val << (2 * (i & 0x3));
729 
730 		if (i % 4 == 3 || i == kpad->var->max_row_num) {
731 			ret |= adp5589_write(client, reg(ADP5585_RPULL_CONFIG_A)
732 					     + (i >> 2), pull_mask);
733 			pull_mask = 0;
734 		}
735 	}
736 
737 	for (i = 0; i <= kpad->var->max_col_num; i++) {
738 		unsigned val = 0, bit = 1 << (i + kpad->var->col_shift);
739 		if (pdata->pullup_en_300k & bit)
740 			val = 0;
741 		else if (pdata->pulldown_en_300k & bit)
742 			val = 1;
743 		else if (pdata->pullup_en_100k & bit)
744 			val = 2;
745 		else if (pdata->pull_dis_mask & bit)
746 			val = 3;
747 
748 		pull_mask |= val << (2 * (i & 0x3));
749 
750 		if (i % 4 == 3 || i == kpad->var->max_col_num) {
751 			ret |= adp5589_write(client,
752 					     reg(ADP5585_RPULL_CONFIG_C) +
753 					     (i >> 2), pull_mask);
754 			pull_mask = 0;
755 		}
756 	}
757 
758 	if (pdata->reset1_key_1 && pdata->reset1_key_2 && pdata->reset1_key_3) {
759 		ret |= adp5589_write(client, reg(ADP5589_RESET1_EVENT_A),
760 				     adp5589_get_evcode(kpad,
761 							pdata->reset1_key_1));
762 		ret |= adp5589_write(client, reg(ADP5589_RESET1_EVENT_B),
763 				     adp5589_get_evcode(kpad,
764 							pdata->reset1_key_2));
765 		ret |= adp5589_write(client, reg(ADP5589_RESET1_EVENT_C),
766 				     adp5589_get_evcode(kpad,
767 							pdata->reset1_key_3));
768 		kpad->extend_cfg |= R4_EXTEND_CFG;
769 	}
770 
771 	if (pdata->reset2_key_1 && pdata->reset2_key_2) {
772 		ret |= adp5589_write(client, reg(ADP5589_RESET2_EVENT_A),
773 				     adp5589_get_evcode(kpad,
774 							pdata->reset2_key_1));
775 		ret |= adp5589_write(client, reg(ADP5589_RESET2_EVENT_B),
776 				     adp5589_get_evcode(kpad,
777 							pdata->reset2_key_2));
778 		kpad->extend_cfg |= C4_EXTEND_CFG;
779 	}
780 
781 	if (kpad->extend_cfg) {
782 		ret |= adp5589_write(client, reg(ADP5589_RESET_CFG),
783 				     pdata->reset_cfg);
784 		ret |= adp5589_write(client, reg(ADP5589_PIN_CONFIG_D),
785 				     kpad->extend_cfg);
786 	}
787 
788 	ret |= adp5589_write(client, reg(ADP5589_DEBOUNCE_DIS_A),
789 			    pdata->debounce_dis_mask & kpad->var->row_mask);
790 
791 	ret |= adp5589_write(client, reg(ADP5589_DEBOUNCE_DIS_B),
792 			     (pdata->debounce_dis_mask >> kpad->var->col_shift)
793 			     & kpad->var->col_mask);
794 
795 	if (!kpad->is_adp5585)
796 		ret |= adp5589_write(client, reg(ADP5589_DEBOUNCE_DIS_C),
797 				     (pdata->debounce_dis_mask >> 16) & 0xFF);
798 
799 	ret |= adp5589_write(client, reg(ADP5589_POLL_PTIME_CFG),
800 			     pdata->scan_cycle_time & PTIME_MASK);
801 	ret |= adp5589_write(client, ADP5589_5_INT_STATUS,
802 			     (kpad->is_adp5585 ? 0 : LOGIC2_INT) |
803 			     LOGIC1_INT | OVRFLOW_INT |
804 			     (kpad->is_adp5585 ? 0 : LOCK_INT) |
805 			     GPI_INT | EVENT_INT);	/* Status is W1C */
806 
807 	ret |= adp5589_write(client, reg(ADP5589_GENERAL_CFG),
808 			     INT_CFG | OSC_EN | CORE_CLK(3));
809 	ret |= adp5589_write(client, reg(ADP5589_INT_EN),
810 			     OVRFLOW_IEN | GPI_IEN | EVENT_IEN);
811 
812 	if (ret < 0) {
813 		dev_err(&client->dev, "Write Error\n");
814 		return ret;
815 	}
816 
817 	return 0;
818 }
819 
820 static void adp5589_report_switch_state(struct adp5589_kpad *kpad)
821 {
822 	int gpi_stat_tmp, pin_loc;
823 	int i;
824 	int gpi_stat1 = adp5589_read(kpad->client,
825 				     kpad->var->reg(ADP5589_GPI_STATUS_A));
826 	int gpi_stat2 = adp5589_read(kpad->client,
827 				     kpad->var->reg(ADP5589_GPI_STATUS_B));
828 	int gpi_stat3 = !kpad->is_adp5585 ?
829 			adp5589_read(kpad->client, ADP5589_GPI_STATUS_C) : 0;
830 
831 	for (i = 0; i < kpad->gpimapsize; i++) {
832 		unsigned short pin = kpad->gpimap[i].pin;
833 
834 		if (pin <= kpad->var->gpi_pin_row_end) {
835 			gpi_stat_tmp = gpi_stat1;
836 			pin_loc = pin - kpad->var->gpi_pin_row_base;
837 		} else if ((pin - kpad->var->gpi_pin_col_base) < 8) {
838 			gpi_stat_tmp = gpi_stat2;
839 			pin_loc = pin - kpad->var->gpi_pin_col_base;
840 		} else {
841 			gpi_stat_tmp = gpi_stat3;
842 			pin_loc = pin - kpad->var->gpi_pin_col_base - 8;
843 		}
844 
845 		if (gpi_stat_tmp < 0) {
846 			dev_err(&kpad->client->dev,
847 				"Can't read GPIO_DAT_STAT switch %d, default to OFF\n",
848 				pin);
849 			gpi_stat_tmp = 0;
850 		}
851 
852 		input_report_switch(kpad->input,
853 				    kpad->gpimap[i].sw_evt,
854 				    !(gpi_stat_tmp & (1 << pin_loc)));
855 	}
856 
857 	input_sync(kpad->input);
858 }
859 
860 static int adp5589_keypad_add(struct adp5589_kpad *kpad, unsigned int revid)
861 {
862 	struct i2c_client *client = kpad->client;
863 	const struct adp5589_kpad_platform_data *pdata =
864 		dev_get_platdata(&client->dev);
865 	struct input_dev *input;
866 	unsigned int i;
867 	int error;
868 
869 	if (!((pdata->keypad_en_mask & kpad->var->row_mask) &&
870 			(pdata->keypad_en_mask >> kpad->var->col_shift)) ||
871 			!pdata->keymap) {
872 		dev_err(&client->dev, "no rows, cols or keymap from pdata\n");
873 		return -EINVAL;
874 	}
875 
876 	if (pdata->keymapsize != kpad->var->keymapsize) {
877 		dev_err(&client->dev, "invalid keymapsize\n");
878 		return -EINVAL;
879 	}
880 
881 	if (!pdata->gpimap && pdata->gpimapsize) {
882 		dev_err(&client->dev, "invalid gpimap from pdata\n");
883 		return -EINVAL;
884 	}
885 
886 	if (pdata->gpimapsize > kpad->var->gpimapsize_max) {
887 		dev_err(&client->dev, "invalid gpimapsize\n");
888 		return -EINVAL;
889 	}
890 
891 	for (i = 0; i < pdata->gpimapsize; i++) {
892 		unsigned short pin = pdata->gpimap[i].pin;
893 
894 		if (pin < kpad->var->gpi_pin_base ||
895 				pin > kpad->var->gpi_pin_end) {
896 			dev_err(&client->dev, "invalid gpi pin data\n");
897 			return -EINVAL;
898 		}
899 
900 		if ((1 << (pin - kpad->var->gpi_pin_row_base)) &
901 				pdata->keypad_en_mask) {
902 			dev_err(&client->dev, "invalid gpi row/col data\n");
903 			return -EINVAL;
904 		}
905 	}
906 
907 	if (!client->irq) {
908 		dev_err(&client->dev, "no IRQ?\n");
909 		return -EINVAL;
910 	}
911 
912 	input = input_allocate_device();
913 	if (!input)
914 		return -ENOMEM;
915 
916 	kpad->input = input;
917 
918 	input->name = client->name;
919 	input->phys = "adp5589-keys/input0";
920 	input->dev.parent = &client->dev;
921 
922 	input_set_drvdata(input, kpad);
923 
924 	input->id.bustype = BUS_I2C;
925 	input->id.vendor = 0x0001;
926 	input->id.product = 0x0001;
927 	input->id.version = revid;
928 
929 	input->keycodesize = sizeof(kpad->keycode[0]);
930 	input->keycodemax = pdata->keymapsize;
931 	input->keycode = kpad->keycode;
932 
933 	memcpy(kpad->keycode, pdata->keymap,
934 	       pdata->keymapsize * input->keycodesize);
935 
936 	kpad->gpimap = pdata->gpimap;
937 	kpad->gpimapsize = pdata->gpimapsize;
938 
939 	/* setup input device */
940 	__set_bit(EV_KEY, input->evbit);
941 
942 	if (pdata->repeat)
943 		__set_bit(EV_REP, input->evbit);
944 
945 	for (i = 0; i < input->keycodemax; i++)
946 		if (kpad->keycode[i] <= KEY_MAX)
947 			__set_bit(kpad->keycode[i], input->keybit);
948 	__clear_bit(KEY_RESERVED, input->keybit);
949 
950 	if (kpad->gpimapsize)
951 		__set_bit(EV_SW, input->evbit);
952 	for (i = 0; i < kpad->gpimapsize; i++)
953 		__set_bit(kpad->gpimap[i].sw_evt, input->swbit);
954 
955 	error = input_register_device(input);
956 	if (error) {
957 		dev_err(&client->dev, "unable to register input device\n");
958 		goto err_free_input;
959 	}
960 
961 	error = request_threaded_irq(client->irq, NULL, adp5589_irq,
962 				     IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
963 				     client->dev.driver->name, kpad);
964 	if (error) {
965 		dev_err(&client->dev, "irq %d busy?\n", client->irq);
966 		goto err_unreg_dev;
967 	}
968 
969 	device_init_wakeup(&client->dev, 1);
970 
971 	return 0;
972 
973 err_unreg_dev:
974 	input_unregister_device(input);
975 	input = NULL;
976 err_free_input:
977 	input_free_device(input);
978 
979 	return error;
980 }
981 
982 static void adp5589_keypad_remove(struct adp5589_kpad *kpad)
983 {
984 	if (kpad->input) {
985 		free_irq(kpad->client->irq, kpad);
986 		input_unregister_device(kpad->input);
987 	}
988 }
989 
990 static int adp5589_probe(struct i2c_client *client,
991 			 const struct i2c_device_id *id)
992 {
993 	struct adp5589_kpad *kpad;
994 	const struct adp5589_kpad_platform_data *pdata =
995 		dev_get_platdata(&client->dev);
996 	unsigned int revid;
997 	int error, ret;
998 
999 	if (!i2c_check_functionality(client->adapter,
1000 				     I2C_FUNC_SMBUS_BYTE_DATA)) {
1001 		dev_err(&client->dev, "SMBUS Byte Data not Supported\n");
1002 		return -EIO;
1003 	}
1004 
1005 	if (!pdata) {
1006 		dev_err(&client->dev, "no platform data?\n");
1007 		return -EINVAL;
1008 	}
1009 
1010 	kpad = kzalloc(sizeof(*kpad), GFP_KERNEL);
1011 	if (!kpad)
1012 		return -ENOMEM;
1013 
1014 	kpad->client = client;
1015 
1016 	switch (id->driver_data) {
1017 	case ADP5585_02:
1018 		kpad->support_row5 = true;
1019 		fallthrough;
1020 	case ADP5585_01:
1021 		kpad->is_adp5585 = true;
1022 		kpad->var = &const_adp5585;
1023 		break;
1024 	case ADP5589:
1025 		kpad->support_row5 = true;
1026 		kpad->var = &const_adp5589;
1027 		break;
1028 	}
1029 
1030 	ret = adp5589_read(client, ADP5589_5_ID);
1031 	if (ret < 0) {
1032 		error = ret;
1033 		goto err_free_mem;
1034 	}
1035 
1036 	revid = (u8) ret & ADP5589_5_DEVICE_ID_MASK;
1037 
1038 	if (pdata->keymapsize) {
1039 		error = adp5589_keypad_add(kpad, revid);
1040 		if (error)
1041 			goto err_free_mem;
1042 	}
1043 
1044 	error = adp5589_setup(kpad);
1045 	if (error)
1046 		goto err_keypad_remove;
1047 
1048 	if (kpad->gpimapsize)
1049 		adp5589_report_switch_state(kpad);
1050 
1051 	error = adp5589_gpio_add(kpad);
1052 	if (error)
1053 		goto err_keypad_remove;
1054 
1055 	i2c_set_clientdata(client, kpad);
1056 
1057 	dev_info(&client->dev, "Rev.%d keypad, irq %d\n", revid, client->irq);
1058 	return 0;
1059 
1060 err_keypad_remove:
1061 	adp5589_keypad_remove(kpad);
1062 err_free_mem:
1063 	kfree(kpad);
1064 
1065 	return error;
1066 }
1067 
1068 static int adp5589_remove(struct i2c_client *client)
1069 {
1070 	struct adp5589_kpad *kpad = i2c_get_clientdata(client);
1071 
1072 	adp5589_write(client, kpad->var->reg(ADP5589_GENERAL_CFG), 0);
1073 	adp5589_keypad_remove(kpad);
1074 	adp5589_gpio_remove(kpad);
1075 	kfree(kpad);
1076 
1077 	return 0;
1078 }
1079 
1080 #ifdef CONFIG_PM_SLEEP
1081 static int adp5589_suspend(struct device *dev)
1082 {
1083 	struct adp5589_kpad *kpad = dev_get_drvdata(dev);
1084 	struct i2c_client *client = kpad->client;
1085 
1086 	if (!kpad->input)
1087 		return 0;
1088 
1089 	disable_irq(client->irq);
1090 
1091 	if (device_may_wakeup(&client->dev))
1092 		enable_irq_wake(client->irq);
1093 
1094 	return 0;
1095 }
1096 
1097 static int adp5589_resume(struct device *dev)
1098 {
1099 	struct adp5589_kpad *kpad = dev_get_drvdata(dev);
1100 	struct i2c_client *client = kpad->client;
1101 
1102 	if (!kpad->input)
1103 		return 0;
1104 
1105 	if (device_may_wakeup(&client->dev))
1106 		disable_irq_wake(client->irq);
1107 
1108 	enable_irq(client->irq);
1109 
1110 	return 0;
1111 }
1112 #endif
1113 
1114 static SIMPLE_DEV_PM_OPS(adp5589_dev_pm_ops, adp5589_suspend, adp5589_resume);
1115 
1116 static const struct i2c_device_id adp5589_id[] = {
1117 	{"adp5589-keys", ADP5589},
1118 	{"adp5585-keys", ADP5585_01},
1119 	{"adp5585-02-keys", ADP5585_02}, /* Adds ROW5 to ADP5585 */
1120 	{}
1121 };
1122 
1123 MODULE_DEVICE_TABLE(i2c, adp5589_id);
1124 
1125 static struct i2c_driver adp5589_driver = {
1126 	.driver = {
1127 		.name = KBUILD_MODNAME,
1128 		.pm = &adp5589_dev_pm_ops,
1129 	},
1130 	.probe = adp5589_probe,
1131 	.remove = adp5589_remove,
1132 	.id_table = adp5589_id,
1133 };
1134 
1135 module_i2c_driver(adp5589_driver);
1136 
1137 MODULE_LICENSE("GPL");
1138 MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
1139 MODULE_DESCRIPTION("ADP5589/ADP5585 Keypad driver");
1140