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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/bitops.h>
11#include <linux/module.h>
12#include <linux/interrupt.h>
13#include <linux/irq.h>
14#include <linux/workqueue.h>
15#include <linux/errno.h>
16#include <linux/pm.h>
17#include <linux/pm_wakeirq.h>
18#include <linux/platform_device.h>
19#include <linux/input.h>
20#include <linux/i2c.h>
21#include <linux/gpio/driver.h>
22#include <linux/slab.h>
23
24#include <linux/input/adp5589.h>
25
26/* ADP5589/ADP5585 Common Registers */
27#define ADP5589_5_ID 0x00
28#define ADP5589_5_INT_STATUS 0x01
29#define ADP5589_5_STATUS 0x02
30#define ADP5589_5_FIFO_1 0x03
31#define ADP5589_5_FIFO_2 0x04
32#define ADP5589_5_FIFO_3 0x05
33#define ADP5589_5_FIFO_4 0x06
34#define ADP5589_5_FIFO_5 0x07
35#define ADP5589_5_FIFO_6 0x08
36#define ADP5589_5_FIFO_7 0x09
37#define ADP5589_5_FIFO_8 0x0A
38#define ADP5589_5_FIFO_9 0x0B
39#define ADP5589_5_FIFO_10 0x0C
40#define ADP5589_5_FIFO_11 0x0D
41#define ADP5589_5_FIFO_12 0x0E
42#define ADP5589_5_FIFO_13 0x0F
43#define ADP5589_5_FIFO_14 0x10
44#define ADP5589_5_FIFO_15 0x11
45#define ADP5589_5_FIFO_16 0x12
46#define ADP5589_5_GPI_INT_STAT_A 0x13
47#define ADP5589_5_GPI_INT_STAT_B 0x14
48
49/* ADP5589 Registers */
50#define ADP5589_GPI_INT_STAT_C 0x15
51#define ADP5589_GPI_STATUS_A 0x16
52#define ADP5589_GPI_STATUS_B 0x17
53#define ADP5589_GPI_STATUS_C 0x18
54#define ADP5589_RPULL_CONFIG_A 0x19
55#define ADP5589_RPULL_CONFIG_B 0x1A
56#define ADP5589_RPULL_CONFIG_C 0x1B
57#define ADP5589_RPULL_CONFIG_D 0x1C
58#define ADP5589_RPULL_CONFIG_E 0x1D
59#define ADP5589_GPI_INT_LEVEL_A 0x1E
60#define ADP5589_GPI_INT_LEVEL_B 0x1F
61#define ADP5589_GPI_INT_LEVEL_C 0x20
62#define ADP5589_GPI_EVENT_EN_A 0x21
63#define ADP5589_GPI_EVENT_EN_B 0x22
64#define ADP5589_GPI_EVENT_EN_C 0x23
65#define ADP5589_GPI_INTERRUPT_EN_A 0x24
66#define ADP5589_GPI_INTERRUPT_EN_B 0x25
67#define ADP5589_GPI_INTERRUPT_EN_C 0x26
68#define ADP5589_DEBOUNCE_DIS_A 0x27
69#define ADP5589_DEBOUNCE_DIS_B 0x28
70#define ADP5589_DEBOUNCE_DIS_C 0x29
71#define ADP5589_GPO_DATA_OUT_A 0x2A
72#define ADP5589_GPO_DATA_OUT_B 0x2B
73#define ADP5589_GPO_DATA_OUT_C 0x2C
74#define ADP5589_GPO_OUT_MODE_A 0x2D
75#define ADP5589_GPO_OUT_MODE_B 0x2E
76#define ADP5589_GPO_OUT_MODE_C 0x2F
77#define ADP5589_GPIO_DIRECTION_A 0x30
78#define ADP5589_GPIO_DIRECTION_B 0x31
79#define ADP5589_GPIO_DIRECTION_C 0x32
80#define ADP5589_UNLOCK1 0x33
81#define ADP5589_UNLOCK2 0x34
82#define ADP5589_EXT_LOCK_EVENT 0x35
83#define ADP5589_UNLOCK_TIMERS 0x36
84#define ADP5589_LOCK_CFG 0x37
85#define ADP5589_RESET1_EVENT_A 0x38
86#define ADP5589_RESET1_EVENT_B 0x39
87#define ADP5589_RESET1_EVENT_C 0x3A
88#define ADP5589_RESET2_EVENT_A 0x3B
89#define ADP5589_RESET2_EVENT_B 0x3C
90#define ADP5589_RESET_CFG 0x3D
91#define ADP5589_PWM_OFFT_LOW 0x3E
92#define ADP5589_PWM_OFFT_HIGH 0x3F
93#define ADP5589_PWM_ONT_LOW 0x40
94#define ADP5589_PWM_ONT_HIGH 0x41
95#define ADP5589_PWM_CFG 0x42
96#define ADP5589_CLOCK_DIV_CFG 0x43
97#define ADP5589_LOGIC_1_CFG 0x44
98#define ADP5589_LOGIC_2_CFG 0x45
99#define ADP5589_LOGIC_FF_CFG 0x46
100#define ADP5589_LOGIC_INT_EVENT_EN 0x47
101#define ADP5589_POLL_PTIME_CFG 0x48
102#define ADP5589_PIN_CONFIG_A 0x49
103#define ADP5589_PIN_CONFIG_B 0x4A
104#define ADP5589_PIN_CONFIG_C 0x4B
105#define ADP5589_PIN_CONFIG_D 0x4C
106#define ADP5589_GENERAL_CFG 0x4D
107#define ADP5589_INT_EN 0x4E
108
109/* ADP5585 Registers */
110#define ADP5585_GPI_STATUS_A 0x15
111#define ADP5585_GPI_STATUS_B 0x16
112#define ADP5585_RPULL_CONFIG_A 0x17
113#define ADP5585_RPULL_CONFIG_B 0x18
114#define ADP5585_RPULL_CONFIG_C 0x19
115#define ADP5585_RPULL_CONFIG_D 0x1A
116#define ADP5585_GPI_INT_LEVEL_A 0x1B
117#define ADP5585_GPI_INT_LEVEL_B 0x1C
118#define ADP5585_GPI_EVENT_EN_A 0x1D
119#define ADP5585_GPI_EVENT_EN_B 0x1E
120#define ADP5585_GPI_INTERRUPT_EN_A 0x1F
121#define ADP5585_GPI_INTERRUPT_EN_B 0x20
122#define ADP5585_DEBOUNCE_DIS_A 0x21
123#define ADP5585_DEBOUNCE_DIS_B 0x22
124#define ADP5585_GPO_DATA_OUT_A 0x23
125#define ADP5585_GPO_DATA_OUT_B 0x24
126#define ADP5585_GPO_OUT_MODE_A 0x25
127#define ADP5585_GPO_OUT_MODE_B 0x26
128#define ADP5585_GPIO_DIRECTION_A 0x27
129#define ADP5585_GPIO_DIRECTION_B 0x28
130#define ADP5585_RESET1_EVENT_A 0x29
131#define ADP5585_RESET1_EVENT_B 0x2A
132#define ADP5585_RESET1_EVENT_C 0x2B
133#define ADP5585_RESET2_EVENT_A 0x2C
134#define ADP5585_RESET2_EVENT_B 0x2D
135#define ADP5585_RESET_CFG 0x2E
136#define ADP5585_PWM_OFFT_LOW 0x2F
137#define ADP5585_PWM_OFFT_HIGH 0x30
138#define ADP5585_PWM_ONT_LOW 0x31
139#define ADP5585_PWM_ONT_HIGH 0x32
140#define ADP5585_PWM_CFG 0x33
141#define ADP5585_LOGIC_CFG 0x34
142#define ADP5585_LOGIC_FF_CFG 0x35
143#define ADP5585_LOGIC_INT_EVENT_EN 0x36
144#define ADP5585_POLL_PTIME_CFG 0x37
145#define ADP5585_PIN_CONFIG_A 0x38
146#define ADP5585_PIN_CONFIG_B 0x39
147#define ADP5585_PIN_CONFIG_D 0x3A
148#define ADP5585_GENERAL_CFG 0x3B
149#define ADP5585_INT_EN 0x3C
150
151/* ID Register */
152#define ADP5589_5_DEVICE_ID_MASK 0xF
153#define ADP5589_5_MAN_ID_MASK 0xF
154#define ADP5589_5_MAN_ID_SHIFT 4
155#define ADP5589_5_MAN_ID 0x02
156
157/* GENERAL_CFG Register */
158#define OSC_EN BIT(7)
159#define CORE_CLK(x) (((x) & 0x3) << 5)
160#define LCK_TRK_LOGIC BIT(4) /* ADP5589 only */
161#define LCK_TRK_GPI BIT(3) /* ADP5589 only */
162#define INT_CFG BIT(1)
163#define RST_CFG BIT(0)
164
165/* INT_EN Register */
166#define LOGIC2_IEN BIT(5) /* ADP5589 only */
167#define LOGIC1_IEN BIT(4)
168#define LOCK_IEN BIT(3) /* ADP5589 only */
169#define OVRFLOW_IEN BIT(2)
170#define GPI_IEN BIT(1)
171#define EVENT_IEN BIT(0)
172
173/* Interrupt Status Register */
174#define LOGIC2_INT BIT(5) /* ADP5589 only */
175#define LOGIC1_INT BIT(4)
176#define LOCK_INT BIT(3) /* ADP5589 only */
177#define OVRFLOW_INT BIT(2)
178#define GPI_INT BIT(1)
179#define EVENT_INT BIT(0)
180
181/* STATUS Register */
182#define LOGIC2_STAT BIT(7) /* ADP5589 only */
183#define LOGIC1_STAT BIT(6)
184#define LOCK_STAT BIT(5) /* ADP5589 only */
185#define KEC 0x1F
186
187/* PIN_CONFIG_D Register */
188#define C4_EXTEND_CFG BIT(6) /* RESET2 */
189#define R4_EXTEND_CFG BIT(5) /* RESET1 */
190
191/* LOCK_CFG */
192#define LOCK_EN BIT(0)
193
194#define PTIME_MASK 0x3
195#define LTIME_MASK 0x3 /* ADP5589 only */
196
197/* Key Event Register xy */
198#define KEY_EV_PRESSED BIT(7)
199#define KEY_EV_MASK 0x7F
200
201#define KEYP_MAX_EVENT 16
202#define ADP5589_MAXGPIO 19
203#define ADP5585_MAXGPIO 11 /* 10 on the ADP5585-01, 11 on ADP5585-02 */
204
205enum {
206 ADP5589,
207 ADP5585_01,
208 ADP5585_02
209};
210
211struct adp_constants {
212 u8 maxgpio;
213 u8 keymapsize;
214 u8 gpi_pin_row_base;
215 u8 gpi_pin_row_end;
216 u8 gpi_pin_col_base;
217 u8 gpi_pin_base;
218 u8 gpi_pin_end;
219 u8 gpimapsize_max;
220 u8 max_row_num;
221 u8 max_col_num;
222 u8 row_mask;
223 u8 col_mask;
224 u8 col_shift;
225 u8 c4_extend_cfg;
226 u8 (*bank) (u8 offset);
227 u8 (*bit) (u8 offset);
228 u8 (*reg) (u8 reg);
229};
230
231struct adp5589_kpad {
232 struct i2c_client *client;
233 struct input_dev *input;
234 const struct adp_constants *var;
235 unsigned short keycode[ADP5589_KEYMAPSIZE];
236 const struct adp5589_gpi_map *gpimap;
237 unsigned short gpimapsize;
238 unsigned extend_cfg;
239 bool is_adp5585;
240 bool support_row5;
241#ifdef CONFIG_GPIOLIB
242 unsigned char gpiomap[ADP5589_MAXGPIO];
243 struct gpio_chip gc;
244 struct mutex gpio_lock; /* Protect cached dir, dat_out */
245 u8 dat_out[3];
246 u8 dir[3];
247#endif
248};
249
250/*
251 * ADP5589 / ADP5585 derivative / variant handling
252 */
253
254
255/* ADP5589 */
256
257static unsigned char adp5589_bank(unsigned char offset)
258{
259 return offset >> 3;
260}
261
262static unsigned char adp5589_bit(unsigned char offset)
263{
264 return 1u << (offset & 0x7);
265}
266
267static unsigned char adp5589_reg(unsigned char reg)
268{
269 return reg;
270}
271
272static const struct adp_constants const_adp5589 = {
273 .maxgpio = ADP5589_MAXGPIO,
274 .keymapsize = ADP5589_KEYMAPSIZE,
275 .gpi_pin_row_base = ADP5589_GPI_PIN_ROW_BASE,
276 .gpi_pin_row_end = ADP5589_GPI_PIN_ROW_END,
277 .gpi_pin_col_base = ADP5589_GPI_PIN_COL_BASE,
278 .gpi_pin_base = ADP5589_GPI_PIN_BASE,
279 .gpi_pin_end = ADP5589_GPI_PIN_END,
280 .gpimapsize_max = ADP5589_GPIMAPSIZE_MAX,
281 .c4_extend_cfg = 12,
282 .max_row_num = ADP5589_MAX_ROW_NUM,
283 .max_col_num = ADP5589_MAX_COL_NUM,
284 .row_mask = ADP5589_ROW_MASK,
285 .col_mask = ADP5589_COL_MASK,
286 .col_shift = ADP5589_COL_SHIFT,
287 .bank = adp5589_bank,
288 .bit = adp5589_bit,
289 .reg = adp5589_reg,
290};
291
292/* ADP5585 */
293
294static unsigned char adp5585_bank(unsigned char offset)
295{
296 return offset > ADP5585_MAX_ROW_NUM;
297}
298
299static unsigned char adp5585_bit(unsigned char offset)
300{
301 return (offset > ADP5585_MAX_ROW_NUM) ?
302 1u << (offset - ADP5585_COL_SHIFT) : 1u << offset;
303}
304
305static const unsigned char adp5585_reg_lut[] = {
306 [ADP5589_GPI_STATUS_A] = ADP5585_GPI_STATUS_A,
307 [ADP5589_GPI_STATUS_B] = ADP5585_GPI_STATUS_B,
308 [ADP5589_RPULL_CONFIG_A] = ADP5585_RPULL_CONFIG_A,
309 [ADP5589_RPULL_CONFIG_B] = ADP5585_RPULL_CONFIG_B,
310 [ADP5589_RPULL_CONFIG_C] = ADP5585_RPULL_CONFIG_C,
311 [ADP5589_RPULL_CONFIG_D] = ADP5585_RPULL_CONFIG_D,
312 [ADP5589_GPI_INT_LEVEL_A] = ADP5585_GPI_INT_LEVEL_A,
313 [ADP5589_GPI_INT_LEVEL_B] = ADP5585_GPI_INT_LEVEL_B,
314 [ADP5589_GPI_EVENT_EN_A] = ADP5585_GPI_EVENT_EN_A,
315 [ADP5589_GPI_EVENT_EN_B] = ADP5585_GPI_EVENT_EN_B,
316 [ADP5589_GPI_INTERRUPT_EN_A] = ADP5585_GPI_INTERRUPT_EN_A,
317 [ADP5589_GPI_INTERRUPT_EN_B] = ADP5585_GPI_INTERRUPT_EN_B,
318 [ADP5589_DEBOUNCE_DIS_A] = ADP5585_DEBOUNCE_DIS_A,
319 [ADP5589_DEBOUNCE_DIS_B] = ADP5585_DEBOUNCE_DIS_B,
320 [ADP5589_GPO_DATA_OUT_A] = ADP5585_GPO_DATA_OUT_A,
321 [ADP5589_GPO_DATA_OUT_B] = ADP5585_GPO_DATA_OUT_B,
322 [ADP5589_GPO_OUT_MODE_A] = ADP5585_GPO_OUT_MODE_A,
323 [ADP5589_GPO_OUT_MODE_B] = ADP5585_GPO_OUT_MODE_B,
324 [ADP5589_GPIO_DIRECTION_A] = ADP5585_GPIO_DIRECTION_A,
325 [ADP5589_GPIO_DIRECTION_B] = ADP5585_GPIO_DIRECTION_B,
326 [ADP5589_RESET1_EVENT_A] = ADP5585_RESET1_EVENT_A,
327 [ADP5589_RESET1_EVENT_B] = ADP5585_RESET1_EVENT_B,
328 [ADP5589_RESET1_EVENT_C] = ADP5585_RESET1_EVENT_C,
329 [ADP5589_RESET2_EVENT_A] = ADP5585_RESET2_EVENT_A,
330 [ADP5589_RESET2_EVENT_B] = ADP5585_RESET2_EVENT_B,
331 [ADP5589_RESET_CFG] = ADP5585_RESET_CFG,
332 [ADP5589_PWM_OFFT_LOW] = ADP5585_PWM_OFFT_LOW,
333 [ADP5589_PWM_OFFT_HIGH] = ADP5585_PWM_OFFT_HIGH,
334 [ADP5589_PWM_ONT_LOW] = ADP5585_PWM_ONT_LOW,
335 [ADP5589_PWM_ONT_HIGH] = ADP5585_PWM_ONT_HIGH,
336 [ADP5589_PWM_CFG] = ADP5585_PWM_CFG,
337 [ADP5589_LOGIC_1_CFG] = ADP5585_LOGIC_CFG,
338 [ADP5589_LOGIC_FF_CFG] = ADP5585_LOGIC_FF_CFG,
339 [ADP5589_LOGIC_INT_EVENT_EN] = ADP5585_LOGIC_INT_EVENT_EN,
340 [ADP5589_POLL_PTIME_CFG] = ADP5585_POLL_PTIME_CFG,
341 [ADP5589_PIN_CONFIG_A] = ADP5585_PIN_CONFIG_A,
342 [ADP5589_PIN_CONFIG_B] = ADP5585_PIN_CONFIG_B,
343 [ADP5589_PIN_CONFIG_D] = ADP5585_PIN_CONFIG_D,
344 [ADP5589_GENERAL_CFG] = ADP5585_GENERAL_CFG,
345 [ADP5589_INT_EN] = ADP5585_INT_EN,
346};
347
348static unsigned char adp5585_reg(unsigned char reg)
349{
350 return adp5585_reg_lut[reg];
351}
352
353static const struct adp_constants const_adp5585 = {
354 .maxgpio = ADP5585_MAXGPIO,
355 .keymapsize = ADP5585_KEYMAPSIZE,
356 .gpi_pin_row_base = ADP5585_GPI_PIN_ROW_BASE,
357 .gpi_pin_row_end = ADP5585_GPI_PIN_ROW_END,
358 .gpi_pin_col_base = ADP5585_GPI_PIN_COL_BASE,
359 .gpi_pin_base = ADP5585_GPI_PIN_BASE,
360 .gpi_pin_end = ADP5585_GPI_PIN_END,
361 .gpimapsize_max = ADP5585_GPIMAPSIZE_MAX,
362 .c4_extend_cfg = 10,
363 .max_row_num = ADP5585_MAX_ROW_NUM,
364 .max_col_num = ADP5585_MAX_COL_NUM,
365 .row_mask = ADP5585_ROW_MASK,
366 .col_mask = ADP5585_COL_MASK,
367 .col_shift = ADP5585_COL_SHIFT,
368 .bank = adp5585_bank,
369 .bit = adp5585_bit,
370 .reg = adp5585_reg,
371};
372
373static int adp5589_read(struct i2c_client *client, u8 reg)
374{
375 int ret = i2c_smbus_read_byte_data(client, reg);
376
377 if (ret < 0)
378 dev_err(&client->dev, "Read Error\n");
379
380 return ret;
381}
382
383static int adp5589_write(struct i2c_client *client, u8 reg, u8 val)
384{
385 return i2c_smbus_write_byte_data(client, reg, val);
386}
387
388#ifdef CONFIG_GPIOLIB
389static int adp5589_gpio_get_value(struct gpio_chip *chip, unsigned off)
390{
391 struct adp5589_kpad *kpad = gpiochip_get_data(chip);
392 unsigned int bank = kpad->var->bank(kpad->gpiomap[off]);
393 unsigned int bit = kpad->var->bit(kpad->gpiomap[off]);
394
395 return !!(adp5589_read(kpad->client,
396 kpad->var->reg(ADP5589_GPI_STATUS_A) + bank) &
397 bit);
398}
399
400static void adp5589_gpio_set_value(struct gpio_chip *chip,
401 unsigned off, int val)
402{
403 struct adp5589_kpad *kpad = gpiochip_get_data(chip);
404 unsigned int bank = kpad->var->bank(kpad->gpiomap[off]);
405 unsigned int bit = kpad->var->bit(kpad->gpiomap[off]);
406
407 mutex_lock(&kpad->gpio_lock);
408
409 if (val)
410 kpad->dat_out[bank] |= bit;
411 else
412 kpad->dat_out[bank] &= ~bit;
413
414 adp5589_write(kpad->client, kpad->var->reg(ADP5589_GPO_DATA_OUT_A) +
415 bank, kpad->dat_out[bank]);
416
417 mutex_unlock(&kpad->gpio_lock);
418}
419
420static int adp5589_gpio_direction_input(struct gpio_chip *chip, unsigned off)
421{
422 struct adp5589_kpad *kpad = gpiochip_get_data(chip);
423 unsigned int bank = kpad->var->bank(kpad->gpiomap[off]);
424 unsigned int bit = kpad->var->bit(kpad->gpiomap[off]);
425 int ret;
426
427 mutex_lock(&kpad->gpio_lock);
428
429 kpad->dir[bank] &= ~bit;
430 ret = adp5589_write(kpad->client,
431 kpad->var->reg(ADP5589_GPIO_DIRECTION_A) + bank,
432 kpad->dir[bank]);
433
434 mutex_unlock(&kpad->gpio_lock);
435
436 return ret;
437}
438
439static int adp5589_gpio_direction_output(struct gpio_chip *chip,
440 unsigned off, int val)
441{
442 struct adp5589_kpad *kpad = gpiochip_get_data(chip);
443 unsigned int bank = kpad->var->bank(kpad->gpiomap[off]);
444 unsigned int bit = kpad->var->bit(kpad->gpiomap[off]);
445 int ret;
446
447 mutex_lock(&kpad->gpio_lock);
448
449 kpad->dir[bank] |= bit;
450
451 if (val)
452 kpad->dat_out[bank] |= bit;
453 else
454 kpad->dat_out[bank] &= ~bit;
455
456 ret = adp5589_write(kpad->client, kpad->var->reg(ADP5589_GPO_DATA_OUT_A)
457 + bank, kpad->dat_out[bank]);
458 ret |= adp5589_write(kpad->client,
459 kpad->var->reg(ADP5589_GPIO_DIRECTION_A) + bank,
460 kpad->dir[bank]);
461
462 mutex_unlock(&kpad->gpio_lock);
463
464 return ret;
465}
466
467static int adp5589_build_gpiomap(struct adp5589_kpad *kpad,
468 const struct adp5589_kpad_platform_data *pdata)
469{
470 bool pin_used[ADP5589_MAXGPIO];
471 int n_unused = 0;
472 int i;
473
474 memset(pin_used, false, sizeof(pin_used));
475
476 for (i = 0; i < kpad->var->maxgpio; i++)
477 if (pdata->keypad_en_mask & BIT(i))
478 pin_used[i] = true;
479
480 for (i = 0; i < kpad->gpimapsize; i++)
481 pin_used[kpad->gpimap[i].pin - kpad->var->gpi_pin_base] = true;
482
483 if (kpad->extend_cfg & R4_EXTEND_CFG)
484 pin_used[4] = true;
485
486 if (kpad->extend_cfg & C4_EXTEND_CFG)
487 pin_used[kpad->var->c4_extend_cfg] = true;
488
489 if (!kpad->support_row5)
490 pin_used[5] = true;
491
492 for (i = 0; i < kpad->var->maxgpio; i++)
493 if (!pin_used[i])
494 kpad->gpiomap[n_unused++] = i;
495
496 return n_unused;
497}
498
499static int adp5589_gpio_add(struct adp5589_kpad *kpad)
500{
501 struct device *dev = &kpad->client->dev;
502 const struct adp5589_kpad_platform_data *pdata = dev_get_platdata(dev);
503 const struct adp5589_gpio_platform_data *gpio_data = pdata->gpio_data;
504 int i, error;
505
506 if (!gpio_data)
507 return 0;
508
509 kpad->gc.parent = dev;
510 kpad->gc.ngpio = adp5589_build_gpiomap(kpad, pdata);
511 if (kpad->gc.ngpio == 0) {
512 dev_info(dev, "No unused gpios left to export\n");
513 return 0;
514 }
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 = devm_gpiochip_add_data(dev, &kpad->gc, kpad);
529 if (error)
530 return error;
531
532 for (i = 0; i <= kpad->var->bank(kpad->var->maxgpio); i++) {
533 kpad->dat_out[i] = adp5589_read(kpad->client, kpad->var->reg(
534 ADP5589_GPO_DATA_OUT_A) + i);
535 kpad->dir[i] = adp5589_read(kpad->client, kpad->var->reg(
536 ADP5589_GPIO_DIRECTION_A) + i);
537 }
538
539 return 0;
540}
541#else
542static inline int adp5589_gpio_add(struct adp5589_kpad *kpad)
543{
544 return 0;
545}
546#endif
547
548static void adp5589_report_switches(struct adp5589_kpad *kpad,
549 int key, int key_val)
550{
551 int i;
552
553 for (i = 0; i < kpad->gpimapsize; i++) {
554 if (key_val == kpad->gpimap[i].pin) {
555 input_report_switch(kpad->input,
556 kpad->gpimap[i].sw_evt,
557 key & KEY_EV_PRESSED);
558 break;
559 }
560 }
561}
562
563static void adp5589_report_events(struct adp5589_kpad *kpad, int ev_cnt)
564{
565 int i;
566
567 for (i = 0; i < ev_cnt; i++) {
568 int key = adp5589_read(kpad->client, ADP5589_5_FIFO_1 + i);
569 int key_val = key & KEY_EV_MASK;
570
571 if (key_val >= kpad->var->gpi_pin_base &&
572 key_val <= kpad->var->gpi_pin_end) {
573 adp5589_report_switches(kpad, key, key_val);
574 } else {
575 input_report_key(kpad->input,
576 kpad->keycode[key_val - 1],
577 key & KEY_EV_PRESSED);
578 }
579 }
580}
581
582static irqreturn_t adp5589_irq(int irq, void *handle)
583{
584 struct adp5589_kpad *kpad = handle;
585 struct i2c_client *client = kpad->client;
586 int status, ev_cnt;
587
588 status = adp5589_read(client, ADP5589_5_INT_STATUS);
589
590 if (status & OVRFLOW_INT) /* Unlikely and should never happen */
591 dev_err(&client->dev, "Event Overflow Error\n");
592
593 if (status & EVENT_INT) {
594 ev_cnt = adp5589_read(client, ADP5589_5_STATUS) & KEC;
595 if (ev_cnt) {
596 adp5589_report_events(kpad, ev_cnt);
597 input_sync(kpad->input);
598 }
599 }
600
601 adp5589_write(client, ADP5589_5_INT_STATUS, status); /* Status is W1C */
602
603 return IRQ_HANDLED;
604}
605
606static int adp5589_get_evcode(struct adp5589_kpad *kpad, unsigned short key)
607{
608 int i;
609
610 for (i = 0; i < kpad->var->keymapsize; i++)
611 if (key == kpad->keycode[i])
612 return (i + 1) | KEY_EV_PRESSED;
613
614 dev_err(&kpad->client->dev, "RESET/UNLOCK key not in keycode map\n");
615
616 return -EINVAL;
617}
618
619static int adp5589_setup(struct adp5589_kpad *kpad)
620{
621 struct i2c_client *client = kpad->client;
622 const struct adp5589_kpad_platform_data *pdata =
623 dev_get_platdata(&client->dev);
624 u8 (*reg) (u8) = kpad->var->reg;
625 unsigned char evt_mode1 = 0, evt_mode2 = 0, evt_mode3 = 0;
626 unsigned char pull_mask = 0;
627 int i, ret;
628
629 ret = adp5589_write(client, reg(ADP5589_PIN_CONFIG_A),
630 pdata->keypad_en_mask & kpad->var->row_mask);
631 ret |= adp5589_write(client, reg(ADP5589_PIN_CONFIG_B),
632 (pdata->keypad_en_mask >> kpad->var->col_shift) &
633 kpad->var->col_mask);
634
635 if (!kpad->is_adp5585)
636 ret |= adp5589_write(client, ADP5589_PIN_CONFIG_C,
637 (pdata->keypad_en_mask >> 16) & 0xFF);
638
639 if (!kpad->is_adp5585 && pdata->en_keylock) {
640 ret |= adp5589_write(client, ADP5589_UNLOCK1,
641 pdata->unlock_key1);
642 ret |= adp5589_write(client, ADP5589_UNLOCK2,
643 pdata->unlock_key2);
644 ret |= adp5589_write(client, ADP5589_UNLOCK_TIMERS,
645 pdata->unlock_timer & LTIME_MASK);
646 ret |= adp5589_write(client, ADP5589_LOCK_CFG, LOCK_EN);
647 }
648
649 for (i = 0; i < KEYP_MAX_EVENT; i++)
650 ret |= adp5589_read(client, ADP5589_5_FIFO_1 + i);
651
652 for (i = 0; i < pdata->gpimapsize; i++) {
653 unsigned short pin = pdata->gpimap[i].pin;
654
655 if (pin <= kpad->var->gpi_pin_row_end) {
656 evt_mode1 |= BIT(pin - kpad->var->gpi_pin_row_base);
657 } else {
658 evt_mode2 |=
659 BIT(pin - kpad->var->gpi_pin_col_base) & 0xFF;
660 if (!kpad->is_adp5585)
661 evt_mode3 |=
662 BIT(pin - kpad->var->gpi_pin_col_base) >> 8;
663 }
664 }
665
666 if (pdata->gpimapsize) {
667 ret |= adp5589_write(client, reg(ADP5589_GPI_EVENT_EN_A),
668 evt_mode1);
669 ret |= adp5589_write(client, reg(ADP5589_GPI_EVENT_EN_B),
670 evt_mode2);
671 if (!kpad->is_adp5585)
672 ret |= adp5589_write(client,
673 reg(ADP5589_GPI_EVENT_EN_C),
674 evt_mode3);
675 }
676
677 if (pdata->pull_dis_mask & pdata->pullup_en_100k &
678 pdata->pullup_en_300k & pdata->pulldown_en_300k)
679 dev_warn(&client->dev, "Conflicting pull resistor config\n");
680
681 for (i = 0; i <= kpad->var->max_row_num; i++) {
682 unsigned int val = 0, bit = BIT(i);
683 if (pdata->pullup_en_300k & bit)
684 val = 0;
685 else if (pdata->pulldown_en_300k & bit)
686 val = 1;
687 else if (pdata->pullup_en_100k & bit)
688 val = 2;
689 else if (pdata->pull_dis_mask & bit)
690 val = 3;
691
692 pull_mask |= val << (2 * (i & 0x3));
693
694 if (i % 4 == 3 || i == kpad->var->max_row_num) {
695 ret |= adp5589_write(client, reg(ADP5585_RPULL_CONFIG_A)
696 + (i >> 2), pull_mask);
697 pull_mask = 0;
698 }
699 }
700
701 for (i = 0; i <= kpad->var->max_col_num; i++) {
702 unsigned int val = 0, bit = BIT(i + kpad->var->col_shift);
703 if (pdata->pullup_en_300k & bit)
704 val = 0;
705 else if (pdata->pulldown_en_300k & bit)
706 val = 1;
707 else if (pdata->pullup_en_100k & bit)
708 val = 2;
709 else if (pdata->pull_dis_mask & bit)
710 val = 3;
711
712 pull_mask |= val << (2 * (i & 0x3));
713
714 if (i % 4 == 3 || i == kpad->var->max_col_num) {
715 ret |= adp5589_write(client,
716 reg(ADP5585_RPULL_CONFIG_C) +
717 (i >> 2), pull_mask);
718 pull_mask = 0;
719 }
720 }
721
722 if (pdata->reset1_key_1 && pdata->reset1_key_2 && pdata->reset1_key_3) {
723 ret |= adp5589_write(client, reg(ADP5589_RESET1_EVENT_A),
724 adp5589_get_evcode(kpad,
725 pdata->reset1_key_1));
726 ret |= adp5589_write(client, reg(ADP5589_RESET1_EVENT_B),
727 adp5589_get_evcode(kpad,
728 pdata->reset1_key_2));
729 ret |= adp5589_write(client, reg(ADP5589_RESET1_EVENT_C),
730 adp5589_get_evcode(kpad,
731 pdata->reset1_key_3));
732 kpad->extend_cfg |= R4_EXTEND_CFG;
733 }
734
735 if (pdata->reset2_key_1 && pdata->reset2_key_2) {
736 ret |= adp5589_write(client, reg(ADP5589_RESET2_EVENT_A),
737 adp5589_get_evcode(kpad,
738 pdata->reset2_key_1));
739 ret |= adp5589_write(client, reg(ADP5589_RESET2_EVENT_B),
740 adp5589_get_evcode(kpad,
741 pdata->reset2_key_2));
742 kpad->extend_cfg |= C4_EXTEND_CFG;
743 }
744
745 if (kpad->extend_cfg) {
746 ret |= adp5589_write(client, reg(ADP5589_RESET_CFG),
747 pdata->reset_cfg);
748 ret |= adp5589_write(client, reg(ADP5589_PIN_CONFIG_D),
749 kpad->extend_cfg);
750 }
751
752 ret |= adp5589_write(client, reg(ADP5589_DEBOUNCE_DIS_A),
753 pdata->debounce_dis_mask & kpad->var->row_mask);
754
755 ret |= adp5589_write(client, reg(ADP5589_DEBOUNCE_DIS_B),
756 (pdata->debounce_dis_mask >> kpad->var->col_shift)
757 & kpad->var->col_mask);
758
759 if (!kpad->is_adp5585)
760 ret |= adp5589_write(client, reg(ADP5589_DEBOUNCE_DIS_C),
761 (pdata->debounce_dis_mask >> 16) & 0xFF);
762
763 ret |= adp5589_write(client, reg(ADP5589_POLL_PTIME_CFG),
764 pdata->scan_cycle_time & PTIME_MASK);
765 ret |= adp5589_write(client, ADP5589_5_INT_STATUS,
766 (kpad->is_adp5585 ? 0 : LOGIC2_INT) |
767 LOGIC1_INT | OVRFLOW_INT |
768 (kpad->is_adp5585 ? 0 : LOCK_INT) |
769 GPI_INT | EVENT_INT); /* Status is W1C */
770
771 ret |= adp5589_write(client, reg(ADP5589_GENERAL_CFG),
772 INT_CFG | OSC_EN | CORE_CLK(3));
773 ret |= adp5589_write(client, reg(ADP5589_INT_EN),
774 OVRFLOW_IEN | GPI_IEN | EVENT_IEN);
775
776 if (ret < 0) {
777 dev_err(&client->dev, "Write Error\n");
778 return ret;
779 }
780
781 return 0;
782}
783
784static void adp5589_report_switch_state(struct adp5589_kpad *kpad)
785{
786 int gpi_stat_tmp, pin_loc;
787 int i;
788 int gpi_stat1 = adp5589_read(kpad->client,
789 kpad->var->reg(ADP5589_GPI_STATUS_A));
790 int gpi_stat2 = adp5589_read(kpad->client,
791 kpad->var->reg(ADP5589_GPI_STATUS_B));
792 int gpi_stat3 = !kpad->is_adp5585 ?
793 adp5589_read(kpad->client, ADP5589_GPI_STATUS_C) : 0;
794
795 for (i = 0; i < kpad->gpimapsize; i++) {
796 unsigned short pin = kpad->gpimap[i].pin;
797
798 if (pin <= kpad->var->gpi_pin_row_end) {
799 gpi_stat_tmp = gpi_stat1;
800 pin_loc = pin - kpad->var->gpi_pin_row_base;
801 } else if ((pin - kpad->var->gpi_pin_col_base) < 8) {
802 gpi_stat_tmp = gpi_stat2;
803 pin_loc = pin - kpad->var->gpi_pin_col_base;
804 } else {
805 gpi_stat_tmp = gpi_stat3;
806 pin_loc = pin - kpad->var->gpi_pin_col_base - 8;
807 }
808
809 if (gpi_stat_tmp < 0) {
810 dev_err(&kpad->client->dev,
811 "Can't read GPIO_DAT_STAT switch %d, default to OFF\n",
812 pin);
813 gpi_stat_tmp = 0;
814 }
815
816 input_report_switch(kpad->input,
817 kpad->gpimap[i].sw_evt,
818 !(gpi_stat_tmp & BIT(pin_loc)));
819 }
820
821 input_sync(kpad->input);
822}
823
824static int adp5589_keypad_add(struct adp5589_kpad *kpad, unsigned int revid)
825{
826 struct i2c_client *client = kpad->client;
827 const struct adp5589_kpad_platform_data *pdata =
828 dev_get_platdata(&client->dev);
829 struct input_dev *input;
830 unsigned int i;
831 int error;
832
833 if (!((pdata->keypad_en_mask & kpad->var->row_mask) &&
834 (pdata->keypad_en_mask >> kpad->var->col_shift)) ||
835 !pdata->keymap) {
836 dev_err(&client->dev, "no rows, cols or keymap from pdata\n");
837 return -EINVAL;
838 }
839
840 if (pdata->keymapsize != kpad->var->keymapsize) {
841 dev_err(&client->dev, "invalid keymapsize\n");
842 return -EINVAL;
843 }
844
845 if (!pdata->gpimap && pdata->gpimapsize) {
846 dev_err(&client->dev, "invalid gpimap from pdata\n");
847 return -EINVAL;
848 }
849
850 if (pdata->gpimapsize > kpad->var->gpimapsize_max) {
851 dev_err(&client->dev, "invalid gpimapsize\n");
852 return -EINVAL;
853 }
854
855 for (i = 0; i < pdata->gpimapsize; i++) {
856 unsigned short pin = pdata->gpimap[i].pin;
857
858 if (pin < kpad->var->gpi_pin_base ||
859 pin > kpad->var->gpi_pin_end) {
860 dev_err(&client->dev, "invalid gpi pin data\n");
861 return -EINVAL;
862 }
863
864 if (BIT(pin - kpad->var->gpi_pin_row_base) &
865 pdata->keypad_en_mask) {
866 dev_err(&client->dev, "invalid gpi row/col data\n");
867 return -EINVAL;
868 }
869 }
870
871 if (!client->irq) {
872 dev_err(&client->dev, "no IRQ?\n");
873 return -EINVAL;
874 }
875
876 input = devm_input_allocate_device(&client->dev);
877 if (!input)
878 return -ENOMEM;
879
880 kpad->input = input;
881
882 input->name = client->name;
883 input->phys = "adp5589-keys/input0";
884 input->dev.parent = &client->dev;
885
886 input_set_drvdata(input, kpad);
887
888 input->id.bustype = BUS_I2C;
889 input->id.vendor = 0x0001;
890 input->id.product = 0x0001;
891 input->id.version = revid;
892
893 input->keycodesize = sizeof(kpad->keycode[0]);
894 input->keycodemax = pdata->keymapsize;
895 input->keycode = kpad->keycode;
896
897 memcpy(kpad->keycode, pdata->keymap,
898 pdata->keymapsize * input->keycodesize);
899
900 kpad->gpimap = pdata->gpimap;
901 kpad->gpimapsize = pdata->gpimapsize;
902
903 /* setup input device */
904 __set_bit(EV_KEY, input->evbit);
905
906 if (pdata->repeat)
907 __set_bit(EV_REP, input->evbit);
908
909 for (i = 0; i < input->keycodemax; i++)
910 if (kpad->keycode[i] <= KEY_MAX)
911 __set_bit(kpad->keycode[i], input->keybit);
912 __clear_bit(KEY_RESERVED, input->keybit);
913
914 if (kpad->gpimapsize)
915 __set_bit(EV_SW, input->evbit);
916 for (i = 0; i < kpad->gpimapsize; i++)
917 __set_bit(kpad->gpimap[i].sw_evt, input->swbit);
918
919 error = input_register_device(input);
920 if (error) {
921 dev_err(&client->dev, "unable to register input device\n");
922 return error;
923 }
924
925 error = devm_request_threaded_irq(&client->dev, client->irq,
926 NULL, adp5589_irq,
927 IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
928 client->dev.driver->name, kpad);
929 if (error) {
930 dev_err(&client->dev, "unable to request irq %d\n", client->irq);
931 return error;
932 }
933
934 return 0;
935}
936
937static void adp5589_clear_config(void *data)
938{
939 struct i2c_client *client = data;
940 struct adp5589_kpad *kpad = i2c_get_clientdata(client);
941
942 adp5589_write(client, kpad->var->reg(ADP5589_GENERAL_CFG), 0);
943}
944
945static int adp5589_probe(struct i2c_client *client)
946{
947 const struct i2c_device_id *id = i2c_client_get_device_id(client);
948 struct adp5589_kpad *kpad;
949 const struct adp5589_kpad_platform_data *pdata =
950 dev_get_platdata(&client->dev);
951 unsigned int revid;
952 int error, ret;
953
954 if (!i2c_check_functionality(client->adapter,
955 I2C_FUNC_SMBUS_BYTE_DATA)) {
956 dev_err(&client->dev, "SMBUS Byte Data not Supported\n");
957 return -EIO;
958 }
959
960 if (!pdata) {
961 dev_err(&client->dev, "no platform data?\n");
962 return -EINVAL;
963 }
964
965 kpad = devm_kzalloc(&client->dev, sizeof(*kpad), GFP_KERNEL);
966 if (!kpad)
967 return -ENOMEM;
968
969 kpad->client = client;
970
971 switch (id->driver_data) {
972 case ADP5585_02:
973 kpad->support_row5 = true;
974 fallthrough;
975 case ADP5585_01:
976 kpad->is_adp5585 = true;
977 kpad->var = &const_adp5585;
978 break;
979 case ADP5589:
980 kpad->support_row5 = true;
981 kpad->var = &const_adp5589;
982 break;
983 }
984
985 error = devm_add_action_or_reset(&client->dev, adp5589_clear_config,
986 client);
987 if (error)
988 return error;
989
990 ret = adp5589_read(client, ADP5589_5_ID);
991 if (ret < 0)
992 return ret;
993
994 revid = (u8) ret & ADP5589_5_DEVICE_ID_MASK;
995
996 if (pdata->keymapsize) {
997 error = adp5589_keypad_add(kpad, revid);
998 if (error)
999 return error;
1000 }
1001
1002 error = adp5589_setup(kpad);
1003 if (error)
1004 return error;
1005
1006 if (kpad->gpimapsize)
1007 adp5589_report_switch_state(kpad);
1008
1009 error = adp5589_gpio_add(kpad);
1010 if (error)
1011 return error;
1012
1013 i2c_set_clientdata(client, kpad);
1014
1015 dev_info(&client->dev, "Rev.%d keypad, irq %d\n", revid, client->irq);
1016 return 0;
1017}
1018
1019static int adp5589_suspend(struct device *dev)
1020{
1021 struct i2c_client *client = to_i2c_client(dev);
1022 struct adp5589_kpad *kpad = i2c_get_clientdata(client);
1023
1024 if (kpad->input)
1025 disable_irq(client->irq);
1026
1027 return 0;
1028}
1029
1030static int adp5589_resume(struct device *dev)
1031{
1032 struct i2c_client *client = to_i2c_client(dev);
1033 struct adp5589_kpad *kpad = i2c_get_clientdata(client);
1034
1035 if (kpad->input)
1036 enable_irq(client->irq);
1037
1038 return 0;
1039}
1040
1041static DEFINE_SIMPLE_DEV_PM_OPS(adp5589_dev_pm_ops, adp5589_suspend, adp5589_resume);
1042
1043static const struct i2c_device_id adp5589_id[] = {
1044 {"adp5589-keys", ADP5589},
1045 {"adp5585-keys", ADP5585_01},
1046 {"adp5585-02-keys", ADP5585_02}, /* Adds ROW5 to ADP5585 */
1047 {}
1048};
1049
1050MODULE_DEVICE_TABLE(i2c, adp5589_id);
1051
1052static struct i2c_driver adp5589_driver = {
1053 .driver = {
1054 .name = KBUILD_MODNAME,
1055 .pm = pm_sleep_ptr(&adp5589_dev_pm_ops),
1056 },
1057 .probe = adp5589_probe,
1058 .id_table = adp5589_id,
1059};
1060
1061module_i2c_driver(adp5589_driver);
1062
1063MODULE_LICENSE("GPL");
1064MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
1065MODULE_DESCRIPTION("ADP5589/ADP5585 Keypad driver");
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
203enum {
204 ADP5589,
205 ADP5585_01,
206 ADP5585_02
207};
208
209struct 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
229struct 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
256static unsigned char adp5589_bank(unsigned char offset)
257{
258 return offset >> 3;
259}
260
261static unsigned char adp5589_bit(unsigned char offset)
262{
263 return 1u << (offset & 0x7);
264}
265
266static unsigned char adp5589_reg(unsigned char reg)
267{
268 return reg;
269}
270
271static 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
293static unsigned char adp5585_bank(unsigned char offset)
294{
295 return offset > ADP5585_MAX_ROW_NUM;
296}
297
298static 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
304static 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
347static unsigned char adp5585_reg(unsigned char reg)
348{
349 return adp5585_reg_lut[reg];
350}
351
352static 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
372static 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
382static 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
388static int adp5589_gpio_get_value(struct gpio_chip *chip, unsigned off)
389{
390 struct adp5589_kpad *kpad = container_of(chip, struct adp5589_kpad, gc);
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
399static void adp5589_gpio_set_value(struct gpio_chip *chip,
400 unsigned off, int val)
401{
402 struct adp5589_kpad *kpad = container_of(chip, struct adp5589_kpad, gc);
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
419static int adp5589_gpio_direction_input(struct gpio_chip *chip, unsigned off)
420{
421 struct adp5589_kpad *kpad = container_of(chip, struct adp5589_kpad, gc);
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
438static int adp5589_gpio_direction_output(struct gpio_chip *chip,
439 unsigned off, int val)
440{
441 struct adp5589_kpad *kpad = container_of(chip, struct adp5589_kpad, gc);
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
466static 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
498static 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(&kpad->gc);
529 if (error) {
530 dev_err(dev, "gpiochip_add 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
552static 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
573static inline int adp5589_gpio_add(struct adp5589_kpad *kpad)
574{
575 return 0;
576}
577
578static inline void adp5589_gpio_remove(struct adp5589_kpad *kpad)
579{
580}
581#endif
582
583static 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
598static 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
617static 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
641static 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
654static 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
819static 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
859static 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
1033err_free_irq:
1034 free_irq(client->irq, kpad);
1035err_unreg_dev:
1036 input_unregister_device(input);
1037 input = NULL;
1038err_free_input:
1039 input_free_device(input);
1040err_free_mem:
1041 kfree(kpad);
1042
1043 return error;
1044}
1045
1046static 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
1060static 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
1073static 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
1087static SIMPLE_DEV_PM_OPS(adp5589_dev_pm_ops, adp5589_suspend, adp5589_resume);
1088
1089static 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
1096MODULE_DEVICE_TABLE(i2c, adp5589_id);
1097
1098static 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
1108module_i2c_driver(adp5589_driver);
1109
1110MODULE_LICENSE("GPL");
1111MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
1112MODULE_DESCRIPTION("ADP5589/ADP5585 Keypad driver");