1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Device access for Dialog DA9052 PMICs.
4 *
5 * Copyright(c) 2011 Dialog Semiconductor Ltd.
6 *
7 * Author: David Dajun Chen <dchen@diasemi.com>
8 */
9
10#include <linux/device.h>
11#include <linux/delay.h>
12#include <linux/input.h>
13#include <linux/interrupt.h>
14#include <linux/mfd/core.h>
15#include <linux/slab.h>
16#include <linux/module.h>
17#include <linux/property.h>
18
19#include <linux/mfd/da9052/da9052.h>
20#include <linux/mfd/da9052/pdata.h>
21#include <linux/mfd/da9052/reg.h>
22
23static bool da9052_reg_readable(struct device *dev, unsigned int reg)
24{
25	switch (reg) {
26	case DA9052_PAGE0_CON_REG:
27	case DA9052_STATUS_A_REG:
28	case DA9052_STATUS_B_REG:
29	case DA9052_STATUS_C_REG:
30	case DA9052_STATUS_D_REG:
31	case DA9052_EVENT_A_REG:
32	case DA9052_EVENT_B_REG:
33	case DA9052_EVENT_C_REG:
34	case DA9052_EVENT_D_REG:
35	case DA9052_FAULTLOG_REG:
36	case DA9052_IRQ_MASK_A_REG:
37	case DA9052_IRQ_MASK_B_REG:
38	case DA9052_IRQ_MASK_C_REG:
39	case DA9052_IRQ_MASK_D_REG:
40	case DA9052_CONTROL_A_REG:
41	case DA9052_CONTROL_B_REG:
42	case DA9052_CONTROL_C_REG:
43	case DA9052_CONTROL_D_REG:
44	case DA9052_PDDIS_REG:
45	case DA9052_INTERFACE_REG:
46	case DA9052_RESET_REG:
47	case DA9052_GPIO_0_1_REG:
48	case DA9052_GPIO_2_3_REG:
49	case DA9052_GPIO_4_5_REG:
50	case DA9052_GPIO_6_7_REG:
51	case DA9052_GPIO_8_9_REG:
52	case DA9052_GPIO_10_11_REG:
53	case DA9052_GPIO_12_13_REG:
54	case DA9052_GPIO_14_15_REG:
55	case DA9052_ID_0_1_REG:
56	case DA9052_ID_2_3_REG:
57	case DA9052_ID_4_5_REG:
58	case DA9052_ID_6_7_REG:
59	case DA9052_ID_8_9_REG:
60	case DA9052_ID_10_11_REG:
61	case DA9052_ID_12_13_REG:
62	case DA9052_ID_14_15_REG:
63	case DA9052_ID_16_17_REG:
64	case DA9052_ID_18_19_REG:
65	case DA9052_ID_20_21_REG:
66	case DA9052_SEQ_STATUS_REG:
67	case DA9052_SEQ_A_REG:
68	case DA9052_SEQ_B_REG:
69	case DA9052_SEQ_TIMER_REG:
70	case DA9052_BUCKA_REG:
71	case DA9052_BUCKB_REG:
72	case DA9052_BUCKCORE_REG:
73	case DA9052_BUCKPRO_REG:
74	case DA9052_BUCKMEM_REG:
75	case DA9052_BUCKPERI_REG:
76	case DA9052_LDO1_REG:
77	case DA9052_LDO2_REG:
78	case DA9052_LDO3_REG:
79	case DA9052_LDO4_REG:
80	case DA9052_LDO5_REG:
81	case DA9052_LDO6_REG:
82	case DA9052_LDO7_REG:
83	case DA9052_LDO8_REG:
84	case DA9052_LDO9_REG:
85	case DA9052_LDO10_REG:
86	case DA9052_SUPPLY_REG:
87	case DA9052_PULLDOWN_REG:
88	case DA9052_CHGBUCK_REG:
89	case DA9052_WAITCONT_REG:
90	case DA9052_ISET_REG:
91	case DA9052_BATCHG_REG:
92	case DA9052_CHG_CONT_REG:
93	case DA9052_INPUT_CONT_REG:
94	case DA9052_CHG_TIME_REG:
95	case DA9052_BBAT_CONT_REG:
96	case DA9052_BOOST_REG:
97	case DA9052_LED_CONT_REG:
98	case DA9052_LEDMIN123_REG:
99	case DA9052_LED1_CONF_REG:
100	case DA9052_LED2_CONF_REG:
101	case DA9052_LED3_CONF_REG:
102	case DA9052_LED1CONT_REG:
103	case DA9052_LED2CONT_REG:
104	case DA9052_LED3CONT_REG:
105	case DA9052_LED_CONT_4_REG:
106	case DA9052_LED_CONT_5_REG:
107	case DA9052_ADC_MAN_REG:
108	case DA9052_ADC_CONT_REG:
109	case DA9052_ADC_RES_L_REG:
110	case DA9052_ADC_RES_H_REG:
111	case DA9052_VDD_RES_REG:
112	case DA9052_VDD_MON_REG:
113	case DA9052_ICHG_AV_REG:
114	case DA9052_ICHG_THD_REG:
115	case DA9052_ICHG_END_REG:
116	case DA9052_TBAT_RES_REG:
117	case DA9052_TBAT_HIGHP_REG:
118	case DA9052_TBAT_HIGHN_REG:
119	case DA9052_TBAT_LOW_REG:
120	case DA9052_T_OFFSET_REG:
121	case DA9052_ADCIN4_RES_REG:
122	case DA9052_AUTO4_HIGH_REG:
123	case DA9052_AUTO4_LOW_REG:
124	case DA9052_ADCIN5_RES_REG:
125	case DA9052_AUTO5_HIGH_REG:
126	case DA9052_AUTO5_LOW_REG:
127	case DA9052_ADCIN6_RES_REG:
128	case DA9052_AUTO6_HIGH_REG:
129	case DA9052_AUTO6_LOW_REG:
130	case DA9052_TJUNC_RES_REG:
131	case DA9052_TSI_CONT_A_REG:
132	case DA9052_TSI_CONT_B_REG:
133	case DA9052_TSI_X_MSB_REG:
134	case DA9052_TSI_Y_MSB_REG:
135	case DA9052_TSI_LSB_REG:
136	case DA9052_TSI_Z_MSB_REG:
137	case DA9052_COUNT_S_REG:
138	case DA9052_COUNT_MI_REG:
139	case DA9052_COUNT_H_REG:
140	case DA9052_COUNT_D_REG:
141	case DA9052_COUNT_MO_REG:
142	case DA9052_COUNT_Y_REG:
143	case DA9052_ALARM_MI_REG:
144	case DA9052_ALARM_H_REG:
145	case DA9052_ALARM_D_REG:
146	case DA9052_ALARM_MO_REG:
147	case DA9052_ALARM_Y_REG:
148	case DA9052_SECOND_A_REG:
149	case DA9052_SECOND_B_REG:
150	case DA9052_SECOND_C_REG:
151	case DA9052_SECOND_D_REG:
152	case DA9052_PAGE1_CON_REG:
153		return true;
154	default:
155		return false;
156	}
157}
158
159static bool da9052_reg_writeable(struct device *dev, unsigned int reg)
160{
161	switch (reg) {
162	case DA9052_PAGE0_CON_REG:
163	case DA9052_EVENT_A_REG:
164	case DA9052_EVENT_B_REG:
165	case DA9052_EVENT_C_REG:
166	case DA9052_EVENT_D_REG:
167	case DA9052_FAULTLOG_REG:
168	case DA9052_IRQ_MASK_A_REG:
169	case DA9052_IRQ_MASK_B_REG:
170	case DA9052_IRQ_MASK_C_REG:
171	case DA9052_IRQ_MASK_D_REG:
172	case DA9052_CONTROL_A_REG:
173	case DA9052_CONTROL_B_REG:
174	case DA9052_CONTROL_C_REG:
175	case DA9052_CONTROL_D_REG:
176	case DA9052_PDDIS_REG:
177	case DA9052_RESET_REG:
178	case DA9052_GPIO_0_1_REG:
179	case DA9052_GPIO_2_3_REG:
180	case DA9052_GPIO_4_5_REG:
181	case DA9052_GPIO_6_7_REG:
182	case DA9052_GPIO_8_9_REG:
183	case DA9052_GPIO_10_11_REG:
184	case DA9052_GPIO_12_13_REG:
185	case DA9052_GPIO_14_15_REG:
186	case DA9052_ID_0_1_REG:
187	case DA9052_ID_2_3_REG:
188	case DA9052_ID_4_5_REG:
189	case DA9052_ID_6_7_REG:
190	case DA9052_ID_8_9_REG:
191	case DA9052_ID_10_11_REG:
192	case DA9052_ID_12_13_REG:
193	case DA9052_ID_14_15_REG:
194	case DA9052_ID_16_17_REG:
195	case DA9052_ID_18_19_REG:
196	case DA9052_ID_20_21_REG:
197	case DA9052_SEQ_STATUS_REG:
198	case DA9052_SEQ_A_REG:
199	case DA9052_SEQ_B_REG:
200	case DA9052_SEQ_TIMER_REG:
201	case DA9052_BUCKA_REG:
202	case DA9052_BUCKB_REG:
203	case DA9052_BUCKCORE_REG:
204	case DA9052_BUCKPRO_REG:
205	case DA9052_BUCKMEM_REG:
206	case DA9052_BUCKPERI_REG:
207	case DA9052_LDO1_REG:
208	case DA9052_LDO2_REG:
209	case DA9052_LDO3_REG:
210	case DA9052_LDO4_REG:
211	case DA9052_LDO5_REG:
212	case DA9052_LDO6_REG:
213	case DA9052_LDO7_REG:
214	case DA9052_LDO8_REG:
215	case DA9052_LDO9_REG:
216	case DA9052_LDO10_REG:
217	case DA9052_SUPPLY_REG:
218	case DA9052_PULLDOWN_REG:
219	case DA9052_CHGBUCK_REG:
220	case DA9052_WAITCONT_REG:
221	case DA9052_ISET_REG:
222	case DA9052_BATCHG_REG:
223	case DA9052_CHG_CONT_REG:
224	case DA9052_INPUT_CONT_REG:
225	case DA9052_BBAT_CONT_REG:
226	case DA9052_BOOST_REG:
227	case DA9052_LED_CONT_REG:
228	case DA9052_LEDMIN123_REG:
229	case DA9052_LED1_CONF_REG:
230	case DA9052_LED2_CONF_REG:
231	case DA9052_LED3_CONF_REG:
232	case DA9052_LED1CONT_REG:
233	case DA9052_LED2CONT_REG:
234	case DA9052_LED3CONT_REG:
235	case DA9052_LED_CONT_4_REG:
236	case DA9052_LED_CONT_5_REG:
237	case DA9052_ADC_MAN_REG:
238	case DA9052_ADC_CONT_REG:
239	case DA9052_ADC_RES_L_REG:
240	case DA9052_ADC_RES_H_REG:
241	case DA9052_VDD_RES_REG:
242	case DA9052_VDD_MON_REG:
243	case DA9052_ICHG_THD_REG:
244	case DA9052_ICHG_END_REG:
245	case DA9052_TBAT_HIGHP_REG:
246	case DA9052_TBAT_HIGHN_REG:
247	case DA9052_TBAT_LOW_REG:
248	case DA9052_T_OFFSET_REG:
249	case DA9052_AUTO4_HIGH_REG:
250	case DA9052_AUTO4_LOW_REG:
251	case DA9052_AUTO5_HIGH_REG:
252	case DA9052_AUTO5_LOW_REG:
253	case DA9052_AUTO6_HIGH_REG:
254	case DA9052_AUTO6_LOW_REG:
255	case DA9052_TSI_CONT_A_REG:
256	case DA9052_TSI_CONT_B_REG:
257	case DA9052_COUNT_S_REG:
258	case DA9052_COUNT_MI_REG:
259	case DA9052_COUNT_H_REG:
260	case DA9052_COUNT_D_REG:
261	case DA9052_COUNT_MO_REG:
262	case DA9052_COUNT_Y_REG:
263	case DA9052_ALARM_MI_REG:
264	case DA9052_ALARM_H_REG:
265	case DA9052_ALARM_D_REG:
266	case DA9052_ALARM_MO_REG:
267	case DA9052_ALARM_Y_REG:
268	case DA9052_PAGE1_CON_REG:
269		return true;
270	default:
271		return false;
272	}
273}
274
275static bool da9052_reg_volatile(struct device *dev, unsigned int reg)
276{
277	switch (reg) {
278	case DA9052_STATUS_A_REG:
279	case DA9052_STATUS_B_REG:
280	case DA9052_STATUS_C_REG:
281	case DA9052_STATUS_D_REG:
282	case DA9052_EVENT_A_REG:
283	case DA9052_EVENT_B_REG:
284	case DA9052_EVENT_C_REG:
285	case DA9052_EVENT_D_REG:
286	case DA9052_CONTROL_B_REG:
287	case DA9052_CONTROL_D_REG:
288	case DA9052_SUPPLY_REG:
289	case DA9052_FAULTLOG_REG:
290	case DA9052_CHG_TIME_REG:
291	case DA9052_ADC_RES_L_REG:
292	case DA9052_ADC_RES_H_REG:
293	case DA9052_VDD_RES_REG:
294	case DA9052_ICHG_AV_REG:
295	case DA9052_TBAT_RES_REG:
296	case DA9052_ADCIN4_RES_REG:
297	case DA9052_ADCIN5_RES_REG:
298	case DA9052_ADCIN6_RES_REG:
299	case DA9052_TJUNC_RES_REG:
300	case DA9052_TSI_X_MSB_REG:
301	case DA9052_TSI_Y_MSB_REG:
302	case DA9052_TSI_LSB_REG:
303	case DA9052_TSI_Z_MSB_REG:
304	case DA9052_COUNT_S_REG:
305	case DA9052_COUNT_MI_REG:
306	case DA9052_COUNT_H_REG:
307	case DA9052_COUNT_D_REG:
308	case DA9052_COUNT_MO_REG:
309	case DA9052_COUNT_Y_REG:
310	case DA9052_ALARM_MI_REG:
311		return true;
312	default:
313		return false;
314	}
315}
316
317/*
318 * TBAT look-up table is computed from the R90 reg (8 bit register)
319 * reading as below. The battery temperature is in milliCentigrade
320 * TBAT = (1/(t1+1/298) - 273) * 1000 mC
321 * where t1 = (1/B)* ln(( ADCval * 2.5)/(R25*ITBAT*255))
322 * Default values are R25 = 10e3, B = 3380, ITBAT = 50e-6
323 * Example:
324 * R25=10E3, B=3380, ITBAT=50e-6, ADCVAL=62d calculates
325 * TBAT = 20015 mili degrees Centrigrade
326 *
327*/
328static const int32_t tbat_lookup[255] = {
329	183258, 144221, 124334, 111336, 101826, 94397, 88343, 83257,
330	78889, 75071, 71688, 68656, 65914, 63414, 61120, 59001,
331	570366, 55204, 53490, 51881, 50364, 48931, 47574, 46285,
332	45059, 43889, 42772, 41703, 40678, 39694, 38748, 37838,
333	36961, 36115, 35297, 34507, 33743, 33002, 32284, 31588,
334	30911, 30254, 29615, 28994, 28389, 27799, 27225, 26664,
335	26117, 25584, 25062, 24553, 24054, 23567, 23091, 22624,
336	22167, 21719, 21281, 20851, 20429, 20015, 19610, 19211,
337	18820, 18436, 18058, 17688, 17323, 16965, 16612, 16266,
338	15925, 15589, 15259, 14933, 14613, 14298, 13987, 13681,
339	13379, 13082, 12788, 12499, 12214, 11933, 11655, 11382,
340	11112, 10845, 10582, 10322, 10066, 9812, 9562, 9315,
341	9071, 8830, 8591, 8356, 8123, 7893, 7665, 7440,
342	7218, 6998, 6780, 6565, 6352, 6141, 5933, 5726,
343	5522, 5320, 5120, 4922, 4726, 4532, 4340, 4149,
344	3961, 3774, 3589, 3406, 3225, 3045, 2867, 2690,
345	2516, 2342, 2170, 2000, 1831, 1664, 1498, 1334,
346	1171, 1009, 849, 690, 532, 376, 221, 67,
347	-84, -236, -386, -535, -683, -830, -975, -1119,
348	-1263, -1405, -1546, -1686, -1825, -1964, -2101, -2237,
349	-2372, -2506, -2639, -2771, -2902, -3033, -3162, -3291,
350	-3418, -3545, -3671, -3796, -3920, -4044, -4166, -4288,
351	-4409, -4529, -4649, -4767, -4885, -5002, -5119, -5235,
352	-5349, -5464, -5577, -5690, -5802, -5913, -6024, -6134,
353	-6244, -6352, -6461, -6568, -6675, -6781, -6887, -6992,
354	-7096, -7200, -7303, -7406, -7508, -7609, -7710, -7810,
355	-7910, -8009, -8108, -8206, -8304, -8401, -8497, -8593,
356	-8689, -8784, -8878, -8972, -9066, -9159, -9251, -9343,
357	-9435, -9526, -9617, -9707, -9796, -9886, -9975, -10063,
358	-10151, -10238, -10325, -10412, -10839, -10923, -11007, -11090,
359	-11173, -11256, -11338, -11420, -11501, -11583, -11663, -11744,
360	-11823, -11903, -11982
361};
362
363static const u8 chan_mux[DA9052_ADC_VBBAT + 1] = {
364	[DA9052_ADC_VDDOUT]	= DA9052_ADC_MAN_MUXSEL_VDDOUT,
365	[DA9052_ADC_ICH]	= DA9052_ADC_MAN_MUXSEL_ICH,
366	[DA9052_ADC_TBAT]	= DA9052_ADC_MAN_MUXSEL_TBAT,
367	[DA9052_ADC_VBAT]	= DA9052_ADC_MAN_MUXSEL_VBAT,
368	[DA9052_ADC_IN4]	= DA9052_ADC_MAN_MUXSEL_AD4,
369	[DA9052_ADC_IN5]	= DA9052_ADC_MAN_MUXSEL_AD5,
370	[DA9052_ADC_IN6]	= DA9052_ADC_MAN_MUXSEL_AD6,
371	[DA9052_ADC_VBBAT]	= DA9052_ADC_MAN_MUXSEL_VBBAT
372};
373
374int da9052_adc_manual_read(struct da9052 *da9052, unsigned char channel)
375{
376	int ret;
377	unsigned short calc_data;
378	unsigned short data;
379	unsigned char mux_sel;
380
381	if (channel > DA9052_ADC_VBBAT)
382		return -EINVAL;
383
384	mutex_lock(&da9052->auxadc_lock);
385
386	reinit_completion(&da9052->done);
387
388	/* Channel gets activated on enabling the Conversion bit */
389	mux_sel = chan_mux[channel] | DA9052_ADC_MAN_MAN_CONV;
390
391	ret = da9052_reg_write(da9052, DA9052_ADC_MAN_REG, mux_sel);
392	if (ret < 0)
393		goto err;
394
395	/* Wait for an interrupt */
396	if (!wait_for_completion_timeout(&da9052->done,
397					 msecs_to_jiffies(500))) {
398		dev_err(da9052->dev,
399			"timeout waiting for ADC conversion interrupt\n");
400		ret = -ETIMEDOUT;
401		goto err;
402	}
403
404	ret = da9052_reg_read(da9052, DA9052_ADC_RES_H_REG);
405	if (ret < 0)
406		goto err;
407
408	calc_data = (unsigned short)ret;
409	data = calc_data << 2;
410
411	ret = da9052_reg_read(da9052, DA9052_ADC_RES_L_REG);
412	if (ret < 0)
413		goto err;
414
415	calc_data = (unsigned short)(ret & DA9052_ADC_RES_LSB);
416	data |= calc_data;
417
418	ret = data;
419
420err:
421	mutex_unlock(&da9052->auxadc_lock);
422	return ret;
423}
424EXPORT_SYMBOL_GPL(da9052_adc_manual_read);
425
426int da9052_adc_read_temp(struct da9052 *da9052)
427{
428	int tbat;
429
430	tbat = da9052_reg_read(da9052, DA9052_TBAT_RES_REG);
431	if (tbat <= 0)
432		return tbat;
433
434	/* ARRAY_SIZE check is not needed since TBAT is a 8-bit register */
435	return tbat_lookup[tbat - 1];
436}
437EXPORT_SYMBOL_GPL(da9052_adc_read_temp);
438
439static const struct mfd_cell da9052_subdev_info[] = {
440	{
441		.name = "da9052-regulator",
442		.id = 0,
443	},
444	{
445		.name = "da9052-regulator",
446		.id = 1,
447	},
448	{
449		.name = "da9052-regulator",
450		.id = 2,
451	},
452	{
453		.name = "da9052-regulator",
454		.id = 3,
455	},
456	{
457		.name = "da9052-regulator",
458		.id = 4,
459	},
460	{
461		.name = "da9052-regulator",
462		.id = 5,
463	},
464	{
465		.name = "da9052-regulator",
466		.id = 6,
467	},
468	{
469		.name = "da9052-regulator",
470		.id = 7,
471	},
472	{
473		.name = "da9052-regulator",
474		.id = 8,
475	},
476	{
477		.name = "da9052-regulator",
478		.id = 9,
479	},
480	{
481		.name = "da9052-regulator",
482		.id = 10,
483	},
484	{
485		.name = "da9052-regulator",
486		.id = 11,
487	},
488	{
489		.name = "da9052-regulator",
490		.id = 12,
491	},
492	{
493		.name = "da9052-regulator",
494		.id = 13,
495	},
496	{
497		.name = "da9052-onkey",
498	},
499	{
500		.name = "da9052-rtc",
501	},
502	{
503		.name = "da9052-gpio",
504	},
505	{
506		.name = "da9052-hwmon",
507	},
508	{
509		.name = "da9052-leds",
510	},
511	{
512		.name = "da9052-wled1",
513	},
514	{
515		.name = "da9052-wled2",
516	},
517	{
518		.name = "da9052-wled3",
519	},
520	{
521		.name = "da9052-bat",
522	},
523	{
524		.name = "da9052-watchdog",
525	},
526};
527
528static const struct mfd_cell da9052_tsi_subdev_info[] = {
529	{ .name = "da9052-tsi" },
530};
531
532const struct regmap_config da9052_regmap_config = {
533	.reg_bits = 8,
534	.val_bits = 8,
535
536	.cache_type = REGCACHE_MAPLE,
537
538	.max_register = DA9052_PAGE1_CON_REG,
539	.readable_reg = da9052_reg_readable,
540	.writeable_reg = da9052_reg_writeable,
541	.volatile_reg = da9052_reg_volatile,
542};
543EXPORT_SYMBOL_GPL(da9052_regmap_config);
544
545static int da9052_clear_fault_log(struct da9052 *da9052)
546{
547	int ret = 0;
548	int fault_log = 0;
549
550	fault_log = da9052_reg_read(da9052, DA9052_FAULTLOG_REG);
551	if (fault_log < 0) {
552		dev_err(da9052->dev,
553			"Cannot read FAULT_LOG %d\n", fault_log);
554		return fault_log;
555	}
556
557	if (fault_log) {
558		if (fault_log & DA9052_FAULTLOG_TWDERROR)
559			dev_dbg(da9052->dev,
560				"Fault log entry detected: TWD_ERROR\n");
561		if (fault_log & DA9052_FAULTLOG_VDDFAULT)
562			dev_dbg(da9052->dev,
563				"Fault log entry detected: VDD_FAULT\n");
564		if (fault_log & DA9052_FAULTLOG_VDDSTART)
565			dev_dbg(da9052->dev,
566				"Fault log entry detected: VDD_START\n");
567		if (fault_log & DA9052_FAULTLOG_TEMPOVER)
568			dev_dbg(da9052->dev,
569				"Fault log entry detected: TEMP_OVER\n");
570		if (fault_log & DA9052_FAULTLOG_KEYSHUT)
571			dev_dbg(da9052->dev,
572				"Fault log entry detected: KEY_SHUT\n");
573		if (fault_log & DA9052_FAULTLOG_NSDSET)
574			dev_dbg(da9052->dev,
575				"Fault log entry detected: nSD_SHUT\n");
576		if (fault_log & DA9052_FAULTLOG_WAITSET)
577			dev_dbg(da9052->dev,
578				"Fault log entry detected: WAIT_SHUT\n");
579
580		ret = da9052_reg_write(da9052,
581					DA9052_FAULTLOG_REG,
582					0xFF);
583		if (ret < 0)
584			dev_err(da9052->dev,
585				"Cannot reset FAULT_LOG values %d\n", ret);
586	}
587
588	return ret;
589}
590
591int da9052_device_init(struct da9052 *da9052, u8 chip_id)
592{
593	struct da9052_pdata *pdata = dev_get_platdata(da9052->dev);
594	int ret;
595
596	mutex_init(&da9052->auxadc_lock);
597	init_completion(&da9052->done);
598
599	ret = da9052_clear_fault_log(da9052);
600	if (ret < 0)
601		dev_warn(da9052->dev, "Cannot clear FAULT_LOG\n");
602
603	if (pdata && pdata->init != NULL)
604		pdata->init(da9052);
605
606	da9052->chip_id = chip_id;
607
608	ret = da9052_irq_init(da9052);
609	if (ret != 0) {
610		dev_err(da9052->dev, "da9052_irq_init failed: %d\n", ret);
611		return ret;
612	}
613
614	ret = mfd_add_devices(da9052->dev, PLATFORM_DEVID_AUTO,
615			      da9052_subdev_info,
616			      ARRAY_SIZE(da9052_subdev_info), NULL, 0, NULL);
617	if (ret) {
618		dev_err(da9052->dev, "mfd_add_devices failed: %d\n", ret);
619		goto err;
620	}
621
622	/*
623	 * Check if touchscreen pins are used are analogue input instead
624	 * of having a touchscreen connected to them. The analogue input
625	 * functionality will be provided by hwmon driver (if enabled).
626	 */
627	if (!device_property_read_bool(da9052->dev, "dlg,tsi-as-adc")) {
628		ret = mfd_add_devices(da9052->dev, PLATFORM_DEVID_AUTO,
629				      da9052_tsi_subdev_info,
630				      ARRAY_SIZE(da9052_tsi_subdev_info),
631				      NULL, 0, NULL);
632		if (ret) {
633			dev_err(da9052->dev, "failed to add TSI subdev: %d\n",
634				ret);
635			goto err;
636		}
637	}
638
639	return 0;
640
641err:
642	mfd_remove_devices(da9052->dev);
643	da9052_irq_exit(da9052);
644
645	return ret;
646}
647
648void da9052_device_exit(struct da9052 *da9052)
649{
650	mfd_remove_devices(da9052->dev);
651	da9052_irq_exit(da9052);
652}
653
654MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>");
655MODULE_DESCRIPTION("DA9052 MFD Core");
656