1/* da9063-i2c.c: Interrupt support for Dialog DA9063
2 *
3 * Copyright 2012 Dialog Semiconductor Ltd.
4 * Copyright 2013 Philipp Zabel, Pengutronix
5 *
6 * Author: Krystian Garbaciak <krystian.garbaciak@diasemi.com>
7 *
8 *  This program is free software; you can redistribute  it and/or modify it
9 *  under  the terms of  the GNU General  Public License as published by the
10 *  Free Software Foundation;  either version 2 of the  License, or (at your
11 *  option) any later version.
12 *
13 */
14
15#include <linux/kernel.h>
16#include <linux/module.h>
17#include <linux/i2c.h>
18#include <linux/regmap.h>
19#include <linux/delay.h>
20#include <linux/slab.h>
21#include <linux/err.h>
22
23#include <linux/mfd/core.h>
24#include <linux/mfd/da9063/core.h>
25#include <linux/mfd/da9063/pdata.h>
26#include <linux/mfd/da9063/registers.h>
27
28#include <linux/of.h>
29#include <linux/regulator/of_regulator.h>
30
31static const struct regmap_range da9063_ad_readable_ranges[] = {
32	{
33		.range_min = DA9063_REG_PAGE_CON,
34		.range_max = DA9063_AD_REG_SECOND_D,
35	}, {
36		.range_min = DA9063_REG_SEQ,
37		.range_max = DA9063_REG_ID_32_31,
38	}, {
39		.range_min = DA9063_REG_SEQ_A,
40		.range_max = DA9063_REG_AUTO3_LOW,
41	}, {
42		.range_min = DA9063_REG_T_OFFSET,
43		.range_max = DA9063_AD_REG_GP_ID_19,
44	}, {
45		.range_min = DA9063_REG_CHIP_ID,
46		.range_max = DA9063_REG_CHIP_VARIANT,
47	},
48};
49
50static const struct regmap_range da9063_ad_writeable_ranges[] = {
51	{
52		.range_min = DA9063_REG_PAGE_CON,
53		.range_max = DA9063_REG_PAGE_CON,
54	}, {
55		.range_min = DA9063_REG_FAULT_LOG,
56		.range_max = DA9063_REG_VSYS_MON,
57	}, {
58		.range_min = DA9063_REG_COUNT_S,
59		.range_max = DA9063_AD_REG_ALARM_Y,
60	}, {
61		.range_min = DA9063_REG_SEQ,
62		.range_max = DA9063_REG_ID_32_31,
63	}, {
64		.range_min = DA9063_REG_SEQ_A,
65		.range_max = DA9063_REG_AUTO3_LOW,
66	}, {
67		.range_min = DA9063_REG_CONFIG_I,
68		.range_max = DA9063_AD_REG_MON_REG_4,
69	}, {
70		.range_min = DA9063_AD_REG_GP_ID_0,
71		.range_max = DA9063_AD_REG_GP_ID_19,
72	},
73};
74
75static const struct regmap_range da9063_ad_volatile_ranges[] = {
76	{
77		.range_min = DA9063_REG_STATUS_A,
78		.range_max = DA9063_REG_EVENT_D,
79	}, {
80		.range_min = DA9063_REG_CONTROL_F,
81		.range_max = DA9063_REG_CONTROL_F,
82	}, {
83		.range_min = DA9063_REG_ADC_MAN,
84		.range_max = DA9063_REG_ADC_MAN,
85	}, {
86		.range_min = DA9063_REG_ADC_RES_L,
87		.range_max = DA9063_AD_REG_SECOND_D,
88	}, {
89		.range_min = DA9063_AD_REG_MON_REG_5,
90		.range_max = DA9063_AD_REG_MON_REG_6,
91	},
92};
93
94static const struct regmap_access_table da9063_ad_readable_table = {
95	.yes_ranges = da9063_ad_readable_ranges,
96	.n_yes_ranges = ARRAY_SIZE(da9063_ad_readable_ranges),
97};
98
99static const struct regmap_access_table da9063_ad_writeable_table = {
100	.yes_ranges = da9063_ad_writeable_ranges,
101	.n_yes_ranges = ARRAY_SIZE(da9063_ad_writeable_ranges),
102};
103
104static const struct regmap_access_table da9063_ad_volatile_table = {
105	.yes_ranges = da9063_ad_volatile_ranges,
106	.n_yes_ranges = ARRAY_SIZE(da9063_ad_volatile_ranges),
107};
108
109static const struct regmap_range da9063_bb_readable_ranges[] = {
110	{
111		.range_min = DA9063_REG_PAGE_CON,
112		.range_max = DA9063_BB_REG_SECOND_D,
113	}, {
114		.range_min = DA9063_REG_SEQ,
115		.range_max = DA9063_REG_ID_32_31,
116	}, {
117		.range_min = DA9063_REG_SEQ_A,
118		.range_max = DA9063_REG_AUTO3_LOW,
119	}, {
120		.range_min = DA9063_REG_T_OFFSET,
121		.range_max = DA9063_BB_REG_GP_ID_19,
122	}, {
123		.range_min = DA9063_REG_CHIP_ID,
124		.range_max = DA9063_REG_CHIP_VARIANT,
125	},
126};
127
128static const struct regmap_range da9063_bb_writeable_ranges[] = {
129	{
130		.range_min = DA9063_REG_PAGE_CON,
131		.range_max = DA9063_REG_PAGE_CON,
132	}, {
133		.range_min = DA9063_REG_FAULT_LOG,
134		.range_max = DA9063_REG_VSYS_MON,
135	}, {
136		.range_min = DA9063_REG_COUNT_S,
137		.range_max = DA9063_BB_REG_ALARM_Y,
138	}, {
139		.range_min = DA9063_REG_SEQ,
140		.range_max = DA9063_REG_ID_32_31,
141	}, {
142		.range_min = DA9063_REG_SEQ_A,
143		.range_max = DA9063_REG_AUTO3_LOW,
144	}, {
145		.range_min = DA9063_REG_CONFIG_I,
146		.range_max = DA9063_BB_REG_MON_REG_4,
147	}, {
148		.range_min = DA9063_BB_REG_GP_ID_0,
149		.range_max = DA9063_BB_REG_GP_ID_19,
150	},
151};
152
153static const struct regmap_range da9063_bb_volatile_ranges[] = {
154	{
155		.range_min = DA9063_REG_STATUS_A,
156		.range_max = DA9063_REG_EVENT_D,
157	}, {
158		.range_min = DA9063_REG_CONTROL_F,
159		.range_max = DA9063_REG_CONTROL_F,
160	}, {
161		.range_min = DA9063_REG_ADC_MAN,
162		.range_max = DA9063_REG_ADC_MAN,
163	}, {
164		.range_min = DA9063_REG_ADC_RES_L,
165		.range_max = DA9063_BB_REG_SECOND_D,
166	}, {
167		.range_min = DA9063_BB_REG_MON_REG_5,
168		.range_max = DA9063_BB_REG_MON_REG_6,
169	},
170};
171
172static const struct regmap_access_table da9063_bb_readable_table = {
173	.yes_ranges = da9063_bb_readable_ranges,
174	.n_yes_ranges = ARRAY_SIZE(da9063_bb_readable_ranges),
175};
176
177static const struct regmap_access_table da9063_bb_writeable_table = {
178	.yes_ranges = da9063_bb_writeable_ranges,
179	.n_yes_ranges = ARRAY_SIZE(da9063_bb_writeable_ranges),
180};
181
182static const struct regmap_access_table da9063_bb_volatile_table = {
183	.yes_ranges = da9063_bb_volatile_ranges,
184	.n_yes_ranges = ARRAY_SIZE(da9063_bb_volatile_ranges),
185};
186
187static const struct regmap_range_cfg da9063_range_cfg[] = {
188	{
189		.range_min = DA9063_REG_PAGE_CON,
190		.range_max = DA9063_REG_CHIP_VARIANT,
191		.selector_reg = DA9063_REG_PAGE_CON,
192		.selector_mask = 1 << DA9063_I2C_PAGE_SEL_SHIFT,
193		.selector_shift = DA9063_I2C_PAGE_SEL_SHIFT,
194		.window_start = 0,
195		.window_len = 256,
196	}
197};
198
199static struct regmap_config da9063_regmap_config = {
200	.reg_bits = 8,
201	.val_bits = 8,
202	.ranges = da9063_range_cfg,
203	.num_ranges = ARRAY_SIZE(da9063_range_cfg),
204	.max_register = DA9063_REG_CHIP_VARIANT,
205
206	.cache_type = REGCACHE_RBTREE,
207};
208
209static const struct of_device_id da9063_dt_ids[] = {
210	{ .compatible = "dlg,da9063", },
211	{ }
212};
213MODULE_DEVICE_TABLE(of, da9063_dt_ids);
214static int da9063_i2c_probe(struct i2c_client *i2c,
215	const struct i2c_device_id *id)
216{
217	struct da9063 *da9063;
218	int ret;
219
220	da9063 = devm_kzalloc(&i2c->dev, sizeof(struct da9063), GFP_KERNEL);
221	if (da9063 == NULL)
222		return -ENOMEM;
223
224	i2c_set_clientdata(i2c, da9063);
225	da9063->dev = &i2c->dev;
226	da9063->chip_irq = i2c->irq;
227
228	if (da9063->variant_code == PMIC_DA9063_AD) {
229		da9063_regmap_config.rd_table = &da9063_ad_readable_table;
230		da9063_regmap_config.wr_table = &da9063_ad_writeable_table;
231		da9063_regmap_config.volatile_table = &da9063_ad_volatile_table;
232	} else {
233		da9063_regmap_config.rd_table = &da9063_bb_readable_table;
234		da9063_regmap_config.wr_table = &da9063_bb_writeable_table;
235		da9063_regmap_config.volatile_table = &da9063_bb_volatile_table;
236	}
237
238	da9063->regmap = devm_regmap_init_i2c(i2c, &da9063_regmap_config);
239	if (IS_ERR(da9063->regmap)) {
240		ret = PTR_ERR(da9063->regmap);
241		dev_err(da9063->dev, "Failed to allocate register map: %d\n",
242			ret);
243		return ret;
244	}
245
246	return da9063_device_init(da9063, i2c->irq);
247}
248
249static int da9063_i2c_remove(struct i2c_client *i2c)
250{
251	struct da9063 *da9063 = i2c_get_clientdata(i2c);
252
253	da9063_device_exit(da9063);
254
255	return 0;
256}
257
258static const struct i2c_device_id da9063_i2c_id[] = {
259	{"da9063", PMIC_DA9063},
260	{},
261};
262MODULE_DEVICE_TABLE(i2c, da9063_i2c_id);
263
264static struct i2c_driver da9063_i2c_driver = {
265	.driver = {
266		.name = "da9063",
267		.of_match_table = of_match_ptr(da9063_dt_ids),
268	},
269	.probe    = da9063_i2c_probe,
270	.remove   = da9063_i2c_remove,
271	.id_table = da9063_i2c_id,
272};
273
274module_i2c_driver(da9063_i2c_driver);
275