1 /*
2  * Description:  keypad driver for ADP5589, ADP5585
3  *		 I2C QWERTY Keypad and IO Expander
4  * Bugs: Enter bugs at http://blackfin.uclinux.org/
5  *
6  * Copyright (C) 2010-2011 Analog Devices Inc.
7  * Licensed under the GPL-2.
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.ngpio = adp5589_build_gpiomap(kpad, pdata);
509 	if (kpad->gc.ngpio == 0) {
510 		dev_info(dev, "No unused gpios left to export\n");
511 		return 0;
512 	}
513 
514 	kpad->export_gpio = true;
515 
516 	kpad->gc.direction_input = adp5589_gpio_direction_input;
517 	kpad->gc.direction_output = adp5589_gpio_direction_output;
518 	kpad->gc.get = adp5589_gpio_get_value;
519 	kpad->gc.set = adp5589_gpio_set_value;
520 	kpad->gc.can_sleep = 1;
521 
522 	kpad->gc.base = gpio_data->gpio_start;
523 	kpad->gc.label = kpad->client->name;
524 	kpad->gc.owner = THIS_MODULE;
525 
526 	mutex_init(&kpad->gpio_lock);
527 
528 	error = gpiochip_add_data(&kpad->gc, kpad);
529 	if (error) {
530 		dev_err(dev, "gpiochip_add_data() failed, err: %d\n", error);
531 		return error;
532 	}
533 
534 	for (i = 0; i <= kpad->var->bank(kpad->var->maxgpio); i++) {
535 		kpad->dat_out[i] = adp5589_read(kpad->client, kpad->var->reg(
536 						ADP5589_GPO_DATA_OUT_A) + i);
537 		kpad->dir[i] = adp5589_read(kpad->client, kpad->var->reg(
538 					    ADP5589_GPIO_DIRECTION_A) + i);
539 	}
540 
541 	if (gpio_data->setup) {
542 		error = gpio_data->setup(kpad->client,
543 					 kpad->gc.base, kpad->gc.ngpio,
544 					 gpio_data->context);
545 		if (error)
546 			dev_warn(dev, "setup failed, %d\n", error);
547 	}
548 
549 	return 0;
550 }
551 
552 static void adp5589_gpio_remove(struct adp5589_kpad *kpad)
553 {
554 	struct device *dev = &kpad->client->dev;
555 	const struct adp5589_kpad_platform_data *pdata = dev_get_platdata(dev);
556 	const struct adp5589_gpio_platform_data *gpio_data = pdata->gpio_data;
557 	int error;
558 
559 	if (!kpad->export_gpio)
560 		return;
561 
562 	if (gpio_data->teardown) {
563 		error = gpio_data->teardown(kpad->client,
564 					    kpad->gc.base, kpad->gc.ngpio,
565 					    gpio_data->context);
566 		if (error)
567 			dev_warn(dev, "teardown failed %d\n", error);
568 	}
569 
570 	gpiochip_remove(&kpad->gc);
571 }
572 #else
573 static inline int adp5589_gpio_add(struct adp5589_kpad *kpad)
574 {
575 	return 0;
576 }
577 
578 static inline void adp5589_gpio_remove(struct adp5589_kpad *kpad)
579 {
580 }
581 #endif
582 
583 static void adp5589_report_switches(struct adp5589_kpad *kpad,
584 				    int key, int key_val)
585 {
586 	int i;
587 
588 	for (i = 0; i < kpad->gpimapsize; i++) {
589 		if (key_val == kpad->gpimap[i].pin) {
590 			input_report_switch(kpad->input,
591 					    kpad->gpimap[i].sw_evt,
592 					    key & KEY_EV_PRESSED);
593 			break;
594 		}
595 	}
596 }
597 
598 static void adp5589_report_events(struct adp5589_kpad *kpad, int ev_cnt)
599 {
600 	int i;
601 
602 	for (i = 0; i < ev_cnt; i++) {
603 		int key = adp5589_read(kpad->client, ADP5589_5_FIFO_1 + i);
604 		int key_val = key & KEY_EV_MASK;
605 
606 		if (key_val >= kpad->var->gpi_pin_base &&
607 		    key_val <= kpad->var->gpi_pin_end) {
608 			adp5589_report_switches(kpad, key, key_val);
609 		} else {
610 			input_report_key(kpad->input,
611 					 kpad->keycode[key_val - 1],
612 					 key & KEY_EV_PRESSED);
613 		}
614 	}
615 }
616 
617 static irqreturn_t adp5589_irq(int irq, void *handle)
618 {
619 	struct adp5589_kpad *kpad = handle;
620 	struct i2c_client *client = kpad->client;
621 	int status, ev_cnt;
622 
623 	status = adp5589_read(client, ADP5589_5_INT_STATUS);
624 
625 	if (status & OVRFLOW_INT)	/* Unlikely and should never happen */
626 		dev_err(&client->dev, "Event Overflow Error\n");
627 
628 	if (status & EVENT_INT) {
629 		ev_cnt = adp5589_read(client, ADP5589_5_STATUS) & KEC;
630 		if (ev_cnt) {
631 			adp5589_report_events(kpad, ev_cnt);
632 			input_sync(kpad->input);
633 		}
634 	}
635 
636 	adp5589_write(client, ADP5589_5_INT_STATUS, status); /* Status is W1C */
637 
638 	return IRQ_HANDLED;
639 }
640 
641 static int adp5589_get_evcode(struct adp5589_kpad *kpad, unsigned short key)
642 {
643 	int i;
644 
645 	for (i = 0; i < kpad->var->keymapsize; i++)
646 		if (key == kpad->keycode[i])
647 			return (i + 1) | KEY_EV_PRESSED;
648 
649 	dev_err(&kpad->client->dev, "RESET/UNLOCK key not in keycode map\n");
650 
651 	return -EINVAL;
652 }
653 
654 static int adp5589_setup(struct adp5589_kpad *kpad)
655 {
656 	struct i2c_client *client = kpad->client;
657 	const struct adp5589_kpad_platform_data *pdata =
658 		dev_get_platdata(&client->dev);
659 	u8 (*reg) (u8) = kpad->var->reg;
660 	unsigned char evt_mode1 = 0, evt_mode2 = 0, evt_mode3 = 0;
661 	unsigned char pull_mask = 0;
662 	int i, ret;
663 
664 	ret = adp5589_write(client, reg(ADP5589_PIN_CONFIG_A),
665 			    pdata->keypad_en_mask & kpad->var->row_mask);
666 	ret |= adp5589_write(client, reg(ADP5589_PIN_CONFIG_B),
667 			     (pdata->keypad_en_mask >> kpad->var->col_shift) &
668 			     kpad->var->col_mask);
669 
670 	if (!kpad->is_adp5585)
671 		ret |= adp5589_write(client, ADP5589_PIN_CONFIG_C,
672 				     (pdata->keypad_en_mask >> 16) & 0xFF);
673 
674 	if (!kpad->is_adp5585 && pdata->en_keylock) {
675 		ret |= adp5589_write(client, ADP5589_UNLOCK1,
676 				     pdata->unlock_key1);
677 		ret |= adp5589_write(client, ADP5589_UNLOCK2,
678 				     pdata->unlock_key2);
679 		ret |= adp5589_write(client, ADP5589_UNLOCK_TIMERS,
680 				     pdata->unlock_timer & LTIME_MASK);
681 		ret |= adp5589_write(client, ADP5589_LOCK_CFG, LOCK_EN);
682 	}
683 
684 	for (i = 0; i < KEYP_MAX_EVENT; i++)
685 		ret |= adp5589_read(client, ADP5589_5_FIFO_1 + i);
686 
687 	for (i = 0; i < pdata->gpimapsize; i++) {
688 		unsigned short pin = pdata->gpimap[i].pin;
689 
690 		if (pin <= kpad->var->gpi_pin_row_end) {
691 			evt_mode1 |= (1 << (pin - kpad->var->gpi_pin_row_base));
692 		} else {
693 			evt_mode2 |=
694 			    ((1 << (pin - kpad->var->gpi_pin_col_base)) & 0xFF);
695 			if (!kpad->is_adp5585)
696 				evt_mode3 |= ((1 << (pin -
697 					kpad->var->gpi_pin_col_base)) >> 8);
698 		}
699 	}
700 
701 	if (pdata->gpimapsize) {
702 		ret |= adp5589_write(client, reg(ADP5589_GPI_EVENT_EN_A),
703 				     evt_mode1);
704 		ret |= adp5589_write(client, reg(ADP5589_GPI_EVENT_EN_B),
705 				     evt_mode2);
706 		if (!kpad->is_adp5585)
707 			ret |= adp5589_write(client,
708 					     reg(ADP5589_GPI_EVENT_EN_C),
709 					     evt_mode3);
710 	}
711 
712 	if (pdata->pull_dis_mask & pdata->pullup_en_100k &
713 		pdata->pullup_en_300k & pdata->pulldown_en_300k)
714 		dev_warn(&client->dev, "Conflicting pull resistor config\n");
715 
716 	for (i = 0; i <= kpad->var->max_row_num; i++) {
717 		unsigned val = 0, bit = (1 << i);
718 		if (pdata->pullup_en_300k & bit)
719 			val = 0;
720 		else if (pdata->pulldown_en_300k & bit)
721 			val = 1;
722 		else if (pdata->pullup_en_100k & bit)
723 			val = 2;
724 		else if (pdata->pull_dis_mask & bit)
725 			val = 3;
726 
727 		pull_mask |= val << (2 * (i & 0x3));
728 
729 		if (i % 4 == 3 || i == kpad->var->max_row_num) {
730 			ret |= adp5589_write(client, reg(ADP5585_RPULL_CONFIG_A)
731 					     + (i >> 2), pull_mask);
732 			pull_mask = 0;
733 		}
734 	}
735 
736 	for (i = 0; i <= kpad->var->max_col_num; i++) {
737 		unsigned val = 0, bit = 1 << (i + kpad->var->col_shift);
738 		if (pdata->pullup_en_300k & bit)
739 			val = 0;
740 		else if (pdata->pulldown_en_300k & bit)
741 			val = 1;
742 		else if (pdata->pullup_en_100k & bit)
743 			val = 2;
744 		else if (pdata->pull_dis_mask & bit)
745 			val = 3;
746 
747 		pull_mask |= val << (2 * (i & 0x3));
748 
749 		if (i % 4 == 3 || i == kpad->var->max_col_num) {
750 			ret |= adp5589_write(client,
751 					     reg(ADP5585_RPULL_CONFIG_C) +
752 					     (i >> 2), pull_mask);
753 			pull_mask = 0;
754 		}
755 	}
756 
757 	if (pdata->reset1_key_1 && pdata->reset1_key_2 && pdata->reset1_key_3) {
758 		ret |= adp5589_write(client, reg(ADP5589_RESET1_EVENT_A),
759 				     adp5589_get_evcode(kpad,
760 							pdata->reset1_key_1));
761 		ret |= adp5589_write(client, reg(ADP5589_RESET1_EVENT_B),
762 				     adp5589_get_evcode(kpad,
763 							pdata->reset1_key_2));
764 		ret |= adp5589_write(client, reg(ADP5589_RESET1_EVENT_C),
765 				     adp5589_get_evcode(kpad,
766 							pdata->reset1_key_3));
767 		kpad->extend_cfg |= R4_EXTEND_CFG;
768 	}
769 
770 	if (pdata->reset2_key_1 && pdata->reset2_key_2) {
771 		ret |= adp5589_write(client, reg(ADP5589_RESET2_EVENT_A),
772 				     adp5589_get_evcode(kpad,
773 							pdata->reset2_key_1));
774 		ret |= adp5589_write(client, reg(ADP5589_RESET2_EVENT_B),
775 				     adp5589_get_evcode(kpad,
776 							pdata->reset2_key_2));
777 		kpad->extend_cfg |= C4_EXTEND_CFG;
778 	}
779 
780 	if (kpad->extend_cfg) {
781 		ret |= adp5589_write(client, reg(ADP5589_RESET_CFG),
782 				     pdata->reset_cfg);
783 		ret |= adp5589_write(client, reg(ADP5589_PIN_CONFIG_D),
784 				     kpad->extend_cfg);
785 	}
786 
787 	ret |= adp5589_write(client, reg(ADP5589_DEBOUNCE_DIS_A),
788 			    pdata->debounce_dis_mask & kpad->var->row_mask);
789 
790 	ret |= adp5589_write(client, reg(ADP5589_DEBOUNCE_DIS_B),
791 			     (pdata->debounce_dis_mask >> kpad->var->col_shift)
792 			     & kpad->var->col_mask);
793 
794 	if (!kpad->is_adp5585)
795 		ret |= adp5589_write(client, reg(ADP5589_DEBOUNCE_DIS_C),
796 				     (pdata->debounce_dis_mask >> 16) & 0xFF);
797 
798 	ret |= adp5589_write(client, reg(ADP5589_POLL_PTIME_CFG),
799 			     pdata->scan_cycle_time & PTIME_MASK);
800 	ret |= adp5589_write(client, ADP5589_5_INT_STATUS,
801 			     (kpad->is_adp5585 ? 0 : LOGIC2_INT) |
802 			     LOGIC1_INT | OVRFLOW_INT |
803 			     (kpad->is_adp5585 ? 0 : LOCK_INT) |
804 			     GPI_INT | EVENT_INT);	/* Status is W1C */
805 
806 	ret |= adp5589_write(client, reg(ADP5589_GENERAL_CFG),
807 			     INT_CFG | OSC_EN | CORE_CLK(3));
808 	ret |= adp5589_write(client, reg(ADP5589_INT_EN),
809 			     OVRFLOW_IEN | GPI_IEN | EVENT_IEN);
810 
811 	if (ret < 0) {
812 		dev_err(&client->dev, "Write Error\n");
813 		return ret;
814 	}
815 
816 	return 0;
817 }
818 
819 static void adp5589_report_switch_state(struct adp5589_kpad *kpad)
820 {
821 	int gpi_stat_tmp, pin_loc;
822 	int i;
823 	int gpi_stat1 = adp5589_read(kpad->client,
824 				     kpad->var->reg(ADP5589_GPI_STATUS_A));
825 	int gpi_stat2 = adp5589_read(kpad->client,
826 				     kpad->var->reg(ADP5589_GPI_STATUS_B));
827 	int gpi_stat3 = !kpad->is_adp5585 ?
828 			adp5589_read(kpad->client, ADP5589_GPI_STATUS_C) : 0;
829 
830 	for (i = 0; i < kpad->gpimapsize; i++) {
831 		unsigned short pin = kpad->gpimap[i].pin;
832 
833 		if (pin <= kpad->var->gpi_pin_row_end) {
834 			gpi_stat_tmp = gpi_stat1;
835 			pin_loc = pin - kpad->var->gpi_pin_row_base;
836 		} else if ((pin - kpad->var->gpi_pin_col_base) < 8) {
837 			gpi_stat_tmp = gpi_stat2;
838 			pin_loc = pin - kpad->var->gpi_pin_col_base;
839 		} else {
840 			gpi_stat_tmp = gpi_stat3;
841 			pin_loc = pin - kpad->var->gpi_pin_col_base - 8;
842 		}
843 
844 		if (gpi_stat_tmp < 0) {
845 			dev_err(&kpad->client->dev,
846 				"Can't read GPIO_DAT_STAT switch %d, default to OFF\n",
847 				pin);
848 			gpi_stat_tmp = 0;
849 		}
850 
851 		input_report_switch(kpad->input,
852 				    kpad->gpimap[i].sw_evt,
853 				    !(gpi_stat_tmp & (1 << pin_loc)));
854 	}
855 
856 	input_sync(kpad->input);
857 }
858 
859 static int adp5589_probe(struct i2c_client *client,
860 			 const struct i2c_device_id *id)
861 {
862 	struct adp5589_kpad *kpad;
863 	const struct adp5589_kpad_platform_data *pdata =
864 		dev_get_platdata(&client->dev);
865 	struct input_dev *input;
866 	unsigned int revid;
867 	int ret, i;
868 	int error;
869 
870 	if (!i2c_check_functionality(client->adapter,
871 				     I2C_FUNC_SMBUS_BYTE_DATA)) {
872 		dev_err(&client->dev, "SMBUS Byte Data not Supported\n");
873 		return -EIO;
874 	}
875 
876 	if (!pdata) {
877 		dev_err(&client->dev, "no platform data?\n");
878 		return -EINVAL;
879 	}
880 
881 	kpad = kzalloc(sizeof(*kpad), GFP_KERNEL);
882 	if (!kpad)
883 		return -ENOMEM;
884 
885 	switch (id->driver_data) {
886 	case ADP5585_02:
887 		kpad->support_row5 = true;
888 	case ADP5585_01:
889 		kpad->is_adp5585 = true;
890 		kpad->var = &const_adp5585;
891 		break;
892 	case ADP5589:
893 		kpad->support_row5 = true;
894 		kpad->var = &const_adp5589;
895 		break;
896 	}
897 
898 	if (!((pdata->keypad_en_mask & kpad->var->row_mask) &&
899 			(pdata->keypad_en_mask >> kpad->var->col_shift)) ||
900 			!pdata->keymap) {
901 		dev_err(&client->dev, "no rows, cols or keymap from pdata\n");
902 		error = -EINVAL;
903 		goto err_free_mem;
904 	}
905 
906 	if (pdata->keymapsize != kpad->var->keymapsize) {
907 		dev_err(&client->dev, "invalid keymapsize\n");
908 		error = -EINVAL;
909 		goto err_free_mem;
910 	}
911 
912 	if (!pdata->gpimap && pdata->gpimapsize) {
913 		dev_err(&client->dev, "invalid gpimap from pdata\n");
914 		error = -EINVAL;
915 		goto err_free_mem;
916 	}
917 
918 	if (pdata->gpimapsize > kpad->var->gpimapsize_max) {
919 		dev_err(&client->dev, "invalid gpimapsize\n");
920 		error = -EINVAL;
921 		goto err_free_mem;
922 	}
923 
924 	for (i = 0; i < pdata->gpimapsize; i++) {
925 		unsigned short pin = pdata->gpimap[i].pin;
926 
927 		if (pin < kpad->var->gpi_pin_base ||
928 				pin > kpad->var->gpi_pin_end) {
929 			dev_err(&client->dev, "invalid gpi pin data\n");
930 			error = -EINVAL;
931 			goto err_free_mem;
932 		}
933 
934 		if ((1 << (pin - kpad->var->gpi_pin_row_base)) &
935 				pdata->keypad_en_mask) {
936 			dev_err(&client->dev, "invalid gpi row/col data\n");
937 			error = -EINVAL;
938 			goto err_free_mem;
939 		}
940 	}
941 
942 	if (!client->irq) {
943 		dev_err(&client->dev, "no IRQ?\n");
944 		error = -EINVAL;
945 		goto err_free_mem;
946 	}
947 
948 	input = input_allocate_device();
949 	if (!input) {
950 		error = -ENOMEM;
951 		goto err_free_mem;
952 	}
953 
954 	kpad->client = client;
955 	kpad->input = input;
956 
957 	ret = adp5589_read(client, ADP5589_5_ID);
958 	if (ret < 0) {
959 		error = ret;
960 		goto err_free_input;
961 	}
962 
963 	revid = (u8) ret & ADP5589_5_DEVICE_ID_MASK;
964 
965 	input->name = client->name;
966 	input->phys = "adp5589-keys/input0";
967 	input->dev.parent = &client->dev;
968 
969 	input_set_drvdata(input, kpad);
970 
971 	input->id.bustype = BUS_I2C;
972 	input->id.vendor = 0x0001;
973 	input->id.product = 0x0001;
974 	input->id.version = revid;
975 
976 	input->keycodesize = sizeof(kpad->keycode[0]);
977 	input->keycodemax = pdata->keymapsize;
978 	input->keycode = kpad->keycode;
979 
980 	memcpy(kpad->keycode, pdata->keymap,
981 	       pdata->keymapsize * input->keycodesize);
982 
983 	kpad->gpimap = pdata->gpimap;
984 	kpad->gpimapsize = pdata->gpimapsize;
985 
986 	/* setup input device */
987 	__set_bit(EV_KEY, input->evbit);
988 
989 	if (pdata->repeat)
990 		__set_bit(EV_REP, input->evbit);
991 
992 	for (i = 0; i < input->keycodemax; i++)
993 		if (kpad->keycode[i] <= KEY_MAX)
994 			__set_bit(kpad->keycode[i], input->keybit);
995 	__clear_bit(KEY_RESERVED, input->keybit);
996 
997 	if (kpad->gpimapsize)
998 		__set_bit(EV_SW, input->evbit);
999 	for (i = 0; i < kpad->gpimapsize; i++)
1000 		__set_bit(kpad->gpimap[i].sw_evt, input->swbit);
1001 
1002 	error = input_register_device(input);
1003 	if (error) {
1004 		dev_err(&client->dev, "unable to register input device\n");
1005 		goto err_free_input;
1006 	}
1007 
1008 	error = request_threaded_irq(client->irq, NULL, adp5589_irq,
1009 				     IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
1010 				     client->dev.driver->name, kpad);
1011 	if (error) {
1012 		dev_err(&client->dev, "irq %d busy?\n", client->irq);
1013 		goto err_unreg_dev;
1014 	}
1015 
1016 	error = adp5589_setup(kpad);
1017 	if (error)
1018 		goto err_free_irq;
1019 
1020 	if (kpad->gpimapsize)
1021 		adp5589_report_switch_state(kpad);
1022 
1023 	error = adp5589_gpio_add(kpad);
1024 	if (error)
1025 		goto err_free_irq;
1026 
1027 	device_init_wakeup(&client->dev, 1);
1028 	i2c_set_clientdata(client, kpad);
1029 
1030 	dev_info(&client->dev, "Rev.%d keypad, irq %d\n", revid, client->irq);
1031 	return 0;
1032 
1033 err_free_irq:
1034 	free_irq(client->irq, kpad);
1035 err_unreg_dev:
1036 	input_unregister_device(input);
1037 	input = NULL;
1038 err_free_input:
1039 	input_free_device(input);
1040 err_free_mem:
1041 	kfree(kpad);
1042 
1043 	return error;
1044 }
1045 
1046 static int adp5589_remove(struct i2c_client *client)
1047 {
1048 	struct adp5589_kpad *kpad = i2c_get_clientdata(client);
1049 
1050 	adp5589_write(client, kpad->var->reg(ADP5589_GENERAL_CFG), 0);
1051 	free_irq(client->irq, kpad);
1052 	input_unregister_device(kpad->input);
1053 	adp5589_gpio_remove(kpad);
1054 	kfree(kpad);
1055 
1056 	return 0;
1057 }
1058 
1059 #ifdef CONFIG_PM_SLEEP
1060 static int adp5589_suspend(struct device *dev)
1061 {
1062 	struct adp5589_kpad *kpad = dev_get_drvdata(dev);
1063 	struct i2c_client *client = kpad->client;
1064 
1065 	disable_irq(client->irq);
1066 
1067 	if (device_may_wakeup(&client->dev))
1068 		enable_irq_wake(client->irq);
1069 
1070 	return 0;
1071 }
1072 
1073 static int adp5589_resume(struct device *dev)
1074 {
1075 	struct adp5589_kpad *kpad = dev_get_drvdata(dev);
1076 	struct i2c_client *client = kpad->client;
1077 
1078 	if (device_may_wakeup(&client->dev))
1079 		disable_irq_wake(client->irq);
1080 
1081 	enable_irq(client->irq);
1082 
1083 	return 0;
1084 }
1085 #endif
1086 
1087 static SIMPLE_DEV_PM_OPS(adp5589_dev_pm_ops, adp5589_suspend, adp5589_resume);
1088 
1089 static const struct i2c_device_id adp5589_id[] = {
1090 	{"adp5589-keys", ADP5589},
1091 	{"adp5585-keys", ADP5585_01},
1092 	{"adp5585-02-keys", ADP5585_02}, /* Adds ROW5 to ADP5585 */
1093 	{}
1094 };
1095 
1096 MODULE_DEVICE_TABLE(i2c, adp5589_id);
1097 
1098 static struct i2c_driver adp5589_driver = {
1099 	.driver = {
1100 		.name = KBUILD_MODNAME,
1101 		.pm = &adp5589_dev_pm_ops,
1102 	},
1103 	.probe = adp5589_probe,
1104 	.remove = adp5589_remove,
1105 	.id_table = adp5589_id,
1106 };
1107 
1108 module_i2c_driver(adp5589_driver);
1109 
1110 MODULE_LICENSE("GPL");
1111 MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
1112 MODULE_DESCRIPTION("ADP5589/ADP5585 Keypad driver");
1113