Home Home > GIT Browse
summaryrefslogtreecommitdiff
blob: fab3cdc27ed64539b7089da302f41b037dad3b1e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
/*
 * ROHM BD9571MWV-M MFD driver
 *
 * Copyright (C) 2017 Marek Vasut <marek.vasut+renesas@gmail.com>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * This program is distributed "as is" WITHOUT ANY WARRANTY of any
 * kind, whether expressed or implied; without even the implied warranty
 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License version 2 for more details.
 *
 * Based on the TPS65086 driver
 */

#include <linux/i2c.h>
#include <linux/interrupt.h>
#include <linux/mfd/core.h>
#include <linux/module.h>

#include <linux/mfd/bd9571mwv.h>

static const struct mfd_cell bd9571mwv_cells[] = {
	{ .name = "bd9571mwv-regulator", },
	{ .name = "bd9571mwv-gpio", },
};

static const struct regmap_range bd9571mwv_readable_yes_ranges[] = {
	regmap_reg_range(BD9571MWV_VENDOR_CODE, BD9571MWV_PRODUCT_REVISION),
	regmap_reg_range(BD9571MWV_BKUP_MODE_CNT, BD9571MWV_BKUP_MODE_CNT),
	regmap_reg_range(BD9571MWV_AVS_SET_MONI, BD9571MWV_AVS_DVFS_VID(3)),
	regmap_reg_range(BD9571MWV_VD18_VID, BD9571MWV_VD33_VID),
	regmap_reg_range(BD9571MWV_DVFS_VINIT, BD9571MWV_DVFS_VINIT),
	regmap_reg_range(BD9571MWV_DVFS_SETVMAX, BD9571MWV_DVFS_MONIVDAC),
	regmap_reg_range(BD9571MWV_GPIO_IN, BD9571MWV_GPIO_IN),
	regmap_reg_range(BD9571MWV_GPIO_INT, BD9571MWV_GPIO_INTMASK),
	regmap_reg_range(BD9571MWV_INT_INTREQ, BD9571MWV_INT_INTMASK),
};

static const struct regmap_access_table bd9571mwv_readable_table = {
	.yes_ranges	= bd9571mwv_readable_yes_ranges,
	.n_yes_ranges	= ARRAY_SIZE(bd9571mwv_readable_yes_ranges),
};

static const struct regmap_range bd9571mwv_writable_yes_ranges[] = {
	regmap_reg_range(BD9571MWV_BKUP_MODE_CNT, BD9571MWV_BKUP_MODE_CNT),
	regmap_reg_range(BD9571MWV_AVS_VD09_VID(0), BD9571MWV_AVS_VD09_VID(3)),
	regmap_reg_range(BD9571MWV_DVFS_SETVID, BD9571MWV_DVFS_SETVID),
	regmap_reg_range(BD9571MWV_GPIO_DIR, BD9571MWV_GPIO_OUT),
	regmap_reg_range(BD9571MWV_GPIO_INT_SET, BD9571MWV_GPIO_INTMASK),
	regmap_reg_range(BD9571MWV_INT_INTREQ, BD9571MWV_INT_INTMASK),
};

static const struct regmap_access_table bd9571mwv_writable_table = {
	.yes_ranges	= bd9571mwv_writable_yes_ranges,
	.n_yes_ranges	= ARRAY_SIZE(bd9571mwv_writable_yes_ranges),
};

static const struct regmap_range bd9571mwv_volatile_yes_ranges[] = {
	regmap_reg_range(BD9571MWV_DVFS_MONIVDAC, BD9571MWV_DVFS_MONIVDAC),
	regmap_reg_range(BD9571MWV_GPIO_IN, BD9571MWV_GPIO_IN),
	regmap_reg_range(BD9571MWV_GPIO_INT, BD9571MWV_GPIO_INT),
	regmap_reg_range(BD9571MWV_INT_INTREQ, BD9571MWV_INT_INTREQ),
};

static const struct regmap_access_table bd9571mwv_volatile_table = {
	.yes_ranges	= bd9571mwv_volatile_yes_ranges,
	.n_yes_ranges	= ARRAY_SIZE(bd9571mwv_volatile_yes_ranges),
};

static const struct regmap_config bd9571mwv_regmap_config = {
	.reg_bits	= 8,
	.val_bits	= 8,
	.cache_type	= REGCACHE_RBTREE,
	.rd_table	= &bd9571mwv_readable_table,
	.wr_table	= &bd9571mwv_writable_table,
	.volatile_table	= &bd9571mwv_volatile_table,
	.max_register	= 0xff,
};

static const struct regmap_irq bd9571mwv_irqs[] = {
	REGMAP_IRQ_REG(BD9571MWV_IRQ_MD1, 0,
		       BD9571MWV_INT_INTREQ_MD1_INT),
	REGMAP_IRQ_REG(BD9571MWV_IRQ_MD2_E1, 0,
		       BD9571MWV_INT_INTREQ_MD2_E1_INT),
	REGMAP_IRQ_REG(BD9571MWV_IRQ_MD2_E2, 0,
		       BD9571MWV_INT_INTREQ_MD2_E2_INT),
	REGMAP_IRQ_REG(BD9571MWV_IRQ_PROT_ERR, 0,
		       BD9571MWV_INT_INTREQ_PROT_ERR_INT),
	REGMAP_IRQ_REG(BD9571MWV_IRQ_GP, 0,
		       BD9571MWV_INT_INTREQ_GP_INT),
	REGMAP_IRQ_REG(BD9571MWV_IRQ_128H_OF, 0,
		       BD9571MWV_INT_INTREQ_128H_OF_INT),
	REGMAP_IRQ_REG(BD9571MWV_IRQ_WDT_OF, 0,
		       BD9571MWV_INT_INTREQ_WDT_OF_INT),
	REGMAP_IRQ_REG(BD9571MWV_IRQ_BKUP_TRG, 0,
		       BD9571MWV_INT_INTREQ_BKUP_TRG_INT),
};

static struct regmap_irq_chip bd9571mwv_irq_chip = {
	.name		= "bd9571mwv",
	.status_base	= BD9571MWV_INT_INTREQ,
	.mask_base	= BD9571MWV_INT_INTMASK,
	.ack_base	= BD9571MWV_INT_INTREQ,
	.init_ack_masked = true,
	.num_regs	= 1,
	.irqs		= bd9571mwv_irqs,
	.num_irqs	= ARRAY_SIZE(bd9571mwv_irqs),
};

static int bd9571mwv_identify(struct bd9571mwv *bd)
{
	struct device *dev = bd->dev;
	unsigned int value;
	int ret;

	ret = regmap_read(bd->regmap, BD9571MWV_VENDOR_CODE, &value);
	if (ret) {
		dev_err(dev, "Failed to read vendor code register (ret=%i)\n",
			ret);
		return ret;
	}

	if (value != BD9571MWV_VENDOR_CODE_VAL) {
		dev_err(dev, "Invalid vendor code ID %02x (expected %02x)\n",
			value, BD9571MWV_VENDOR_CODE_VAL);
		return -EINVAL;
	}

	ret = regmap_read(bd->regmap, BD9571MWV_PRODUCT_CODE, &value);
	if (ret) {
		dev_err(dev, "Failed to read product code register (ret=%i)\n",
			ret);
		return ret;
	}

	if (value != BD9571MWV_PRODUCT_CODE_VAL) {
		dev_err(dev, "Invalid product code ID %02x (expected %02x)\n",
			value, BD9571MWV_PRODUCT_CODE_VAL);
		return -EINVAL;
	}

	ret = regmap_read(bd->regmap, BD9571MWV_PRODUCT_REVISION, &value);
	if (ret) {
		dev_err(dev, "Failed to read revision register (ret=%i)\n",
			ret);
		return ret;
	}

	dev_info(dev, "Device: BD9571MWV rev. %d\n", value & 0xff);

	return 0;
}

static int bd9571mwv_probe(struct i2c_client *client,
			  const struct i2c_device_id *ids)
{
	struct bd9571mwv *bd;
	int ret;

	bd = devm_kzalloc(&client->dev, sizeof(*bd), GFP_KERNEL);
	if (!bd)
		return -ENOMEM;

	i2c_set_clientdata(client, bd);
	bd->dev = &client->dev;
	bd->irq = client->irq;

	bd->regmap = devm_regmap_init_i2c(client, &bd9571mwv_regmap_config);
	if (IS_ERR(bd->regmap)) {
		dev_err(bd->dev, "Failed to initialize register map\n");
		return PTR_ERR(bd->regmap);
	}

	ret = bd9571mwv_identify(bd);
	if (ret)
		return ret;

	ret = regmap_add_irq_chip(bd->regmap, bd->irq, IRQF_ONESHOT, 0,
				  &bd9571mwv_irq_chip, &bd->irq_data);
	if (ret) {
		dev_err(bd->dev, "Failed to register IRQ chip\n");
		return ret;
	}

	ret = mfd_add_devices(bd->dev, PLATFORM_DEVID_AUTO, bd9571mwv_cells,
			      ARRAY_SIZE(bd9571mwv_cells), NULL, 0,
			      regmap_irq_get_domain(bd->irq_data));
	if (ret) {
		regmap_del_irq_chip(bd->irq, bd->irq_data);
		return ret;
	}

	return 0;
}

static int bd9571mwv_remove(struct i2c_client *client)
{
	struct bd9571mwv *bd = i2c_get_clientdata(client);

	regmap_del_irq_chip(bd->irq, bd->irq_data);

	return 0;
}

static const struct of_device_id bd9571mwv_of_match_table[] = {
	{ .compatible = "rohm,bd9571mwv", },
	{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, bd9571mwv_of_match_table);

static const struct i2c_device_id bd9571mwv_id_table[] = {
	{ "bd9571mwv", 0 },
	{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(i2c, bd9571mwv_id_table);

static struct i2c_driver bd9571mwv_driver = {
	.driver		= {
		.name	= "bd9571mwv",
		.of_match_table = bd9571mwv_of_match_table,
	},
	.probe		= bd9571mwv_probe,
	.remove		= bd9571mwv_remove,
	.id_table       = bd9571mwv_id_table,
};
module_i2c_driver(bd9571mwv_driver);

MODULE_AUTHOR("Marek Vasut <marek.vasut+renesas@gmail.com>");
MODULE_DESCRIPTION("BD9571MWV PMIC Driver");
MODULE_LICENSE("GPL v2");