Home Home > GIT Browse
summaryrefslogtreecommitdiff
blob: 64b5c3cc30e74226905cb224dfcceb45e51f24af (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
// SPDX-License-Identifier: GPL-2.0
/*
 * Device access for Dollar Cove TI PMIC
 *
 * Copyright (c) 2014, Intel Corporation.
 *   Author: Ramakrishna Pallala <ramakrishna.pallala@intel.com>
 *
 * Cleanup and forward-ported
 *   Copyright (c) 2017 Takashi Iwai <tiwai@suse.de>
 */

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

#define CHTDC_TI_IRQLVL1	0x01
#define CHTDC_TI_MASK_IRQLVL1	0x02

/* Level 1 IRQs */
enum {
	CHTDC_TI_PWRBTN = 0,	/* power button */
	CHTDC_TI_DIETMPWARN,	/* thermal */
	CHTDC_TI_ADCCMPL,	/* ADC */
	/* No IRQ 3 */
	CHTDC_TI_VBATLOW = 4,	/* battery */
	CHTDC_TI_VBUSDET,	/* power source */
	/* No IRQ 6 */
	CHTDC_TI_CCEOCAL = 7,	/* battery */
};

static struct resource power_button_resources[] = {
	DEFINE_RES_IRQ(CHTDC_TI_PWRBTN),
};

static struct resource thermal_resources[] = {
	DEFINE_RES_IRQ(CHTDC_TI_DIETMPWARN),
};

static struct resource adc_resources[] = {
	DEFINE_RES_IRQ(CHTDC_TI_ADCCMPL),
};

static struct resource pwrsrc_resources[] = {
	DEFINE_RES_IRQ(CHTDC_TI_VBUSDET),
};

static struct resource battery_resources[] = {
	DEFINE_RES_IRQ(CHTDC_TI_VBATLOW),
	DEFINE_RES_IRQ(CHTDC_TI_CCEOCAL),
};

static struct mfd_cell chtdc_ti_dev[] = {
	{
		.name = "chtdc_ti_pwrbtn",
		.num_resources = ARRAY_SIZE(power_button_resources),
		.resources = power_button_resources,
	}, {
		.name = "chtdc_ti_adc",
		.num_resources = ARRAY_SIZE(adc_resources),
		.resources = adc_resources,
	}, {
		.name = "chtdc_ti_thermal",
		.num_resources = ARRAY_SIZE(thermal_resources),
		.resources = thermal_resources,
	}, {
		.name = "chtdc_ti_pwrsrc",
		.num_resources = ARRAY_SIZE(pwrsrc_resources),
		.resources = pwrsrc_resources,
	}, {
		.name = "chtdc_ti_battery",
		.num_resources = ARRAY_SIZE(battery_resources),
		.resources = battery_resources,
	},
	{	.name = "chtdc_ti_region", },
};

static const struct regmap_config chtdc_ti_regmap_config = {
	.reg_bits = 8,
	.val_bits = 8,
	.max_register = 128,
	.cache_type = REGCACHE_NONE,
};

static const struct regmap_irq chtdc_ti_irqs[] = {
	REGMAP_IRQ_REG(CHTDC_TI_PWRBTN, 0, BIT(CHTDC_TI_PWRBTN)),
	REGMAP_IRQ_REG(CHTDC_TI_DIETMPWARN, 0, BIT(CHTDC_TI_DIETMPWARN)),
	REGMAP_IRQ_REG(CHTDC_TI_ADCCMPL, 0, BIT(CHTDC_TI_ADCCMPL)),
	REGMAP_IRQ_REG(CHTDC_TI_VBATLOW, 0, BIT(CHTDC_TI_VBATLOW)),
	REGMAP_IRQ_REG(CHTDC_TI_VBUSDET, 0, BIT(CHTDC_TI_VBUSDET)),
	REGMAP_IRQ_REG(CHTDC_TI_CCEOCAL, 0, BIT(CHTDC_TI_CCEOCAL)),
};

static const struct regmap_irq_chip chtdc_ti_irq_chip = {
	.name = KBUILD_MODNAME,
	.irqs = chtdc_ti_irqs,
	.num_irqs = ARRAY_SIZE(chtdc_ti_irqs),
	.num_regs = 1,
	.status_base = CHTDC_TI_IRQLVL1,
	.mask_base = CHTDC_TI_MASK_IRQLVL1,
	.ack_base = CHTDC_TI_IRQLVL1,
};

static int chtdc_ti_probe(struct i2c_client *i2c)
{
	struct device *dev = &i2c->dev;
	struct intel_soc_pmic *pmic;
	int ret;

	pmic = devm_kzalloc(dev, sizeof(*pmic), GFP_KERNEL);
	if (!pmic)
		return -ENOMEM;

	i2c_set_clientdata(i2c, pmic);

	pmic->regmap = devm_regmap_init_i2c(i2c, &chtdc_ti_regmap_config);
	if (IS_ERR(pmic->regmap))
		return PTR_ERR(pmic->regmap);
	pmic->irq = i2c->irq;

	ret = devm_regmap_add_irq_chip(dev, pmic->regmap, pmic->irq,
				       IRQF_ONESHOT, 0,
				       &chtdc_ti_irq_chip,
				       &pmic->irq_chip_data);
	if (ret)
		return ret;

	return devm_mfd_add_devices(dev, PLATFORM_DEVID_NONE, chtdc_ti_dev,
				    ARRAY_SIZE(chtdc_ti_dev), NULL, 0,
				    regmap_irq_get_domain(pmic->irq_chip_data));
}

static void chtdc_ti_shutdown(struct i2c_client *i2c)
{
	struct intel_soc_pmic *pmic = i2c_get_clientdata(i2c);

	disable_irq(pmic->irq);
}

static int __maybe_unused chtdc_ti_suspend(struct device *dev)
{
	struct intel_soc_pmic *pmic = dev_get_drvdata(dev);

	disable_irq(pmic->irq);

	return 0;
}

static int __maybe_unused chtdc_ti_resume(struct device *dev)
{
	struct intel_soc_pmic *pmic = dev_get_drvdata(dev);

	enable_irq(pmic->irq);

	return 0;
}

static SIMPLE_DEV_PM_OPS(chtdc_ti_pm_ops, chtdc_ti_suspend, chtdc_ti_resume);

static const struct acpi_device_id chtdc_ti_acpi_ids[] = {
	{ "INT33F5" },
	{ },
};
MODULE_DEVICE_TABLE(acpi, chtdc_ti_acpi_ids);

static struct i2c_driver chtdc_ti_i2c_driver = {
	.driver = {
		.name = "intel_soc_pmic_chtdc_ti",
		.pm = &chtdc_ti_pm_ops,
		.acpi_match_table = chtdc_ti_acpi_ids,
	},
	.probe_new = chtdc_ti_probe,
	.shutdown = chtdc_ti_shutdown,
};
module_i2c_driver(chtdc_ti_i2c_driver);

MODULE_DESCRIPTION("I2C driver for Intel SoC Dollar Cove TI PMIC");
MODULE_LICENSE("GPL v2");