blob: 861277c6580a0661e7f37f8967303a3569651036 [file] [log] [blame]
Takashi Iwai6bac0602017-09-04 16:43:38 +02001/*
2 * Device access for Dollar Cove TI PMIC
3 *
4 * Copyright (c) 2014, Intel Corporation.
5 * Author: Ramakrishna Pallala <ramakrishna.pallala@intel.com>
6 *
7 * Cleanup and forward-ported
8 * Copyright (c) 2017 Takashi Iwai <tiwai@suse.de>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
13 */
14
15#include <linux/acpi.h>
16#include <linux/interrupt.h>
17#include <linux/i2c.h>
18#include <linux/mfd/core.h>
19#include <linux/mfd/intel_soc_pmic.h>
20#include <linux/module.h>
21#include <linux/regmap.h>
22
23#define CHTDC_TI_IRQLVL1 0x01
24#define CHTDC_TI_MASK_IRQLVL1 0x02
25
26/* Level 1 IRQs */
27enum {
28 CHTDC_TI_PWRBTN = 0, /* power button */
29 CHTDC_TI_DIETMPWARN, /* thermal */
30 CHTDC_TI_ADCCMPL, /* ADC */
31 /* No IRQ 3 */
32 CHTDC_TI_VBATLOW = 4, /* battery */
33 CHTDC_TI_VBUSDET, /* power source */
34 /* No IRQ 6 */
35 CHTDC_TI_CCEOCAL = 7, /* battery */
36};
37
38static struct resource power_button_resources[] = {
39 DEFINE_RES_IRQ(CHTDC_TI_PWRBTN),
40};
41
42static struct resource thermal_resources[] = {
43 DEFINE_RES_IRQ(CHTDC_TI_DIETMPWARN),
44};
45
46static struct resource adc_resources[] = {
47 DEFINE_RES_IRQ(CHTDC_TI_ADCCMPL),
48};
49
50static struct resource pwrsrc_resources[] = {
51 DEFINE_RES_IRQ(CHTDC_TI_VBUSDET),
52};
53
54static struct resource battery_resources[] = {
55 DEFINE_RES_IRQ(CHTDC_TI_VBATLOW),
56 DEFINE_RES_IRQ(CHTDC_TI_CCEOCAL),
57};
58
59static struct mfd_cell chtdc_ti_dev[] = {
60 {
61 .name = "chtdc_ti_pwrbtn",
62 .num_resources = ARRAY_SIZE(power_button_resources),
63 .resources = power_button_resources,
64 }, {
65 .name = "chtdc_ti_adc",
66 .num_resources = ARRAY_SIZE(adc_resources),
67 .resources = adc_resources,
68 }, {
69 .name = "chtdc_ti_thermal",
70 .num_resources = ARRAY_SIZE(thermal_resources),
71 .resources = thermal_resources,
72 }, {
73 .name = "chtdc_ti_pwrsrc",
74 .num_resources = ARRAY_SIZE(pwrsrc_resources),
75 .resources = pwrsrc_resources,
76 }, {
77 .name = "chtdc_ti_battery",
78 .num_resources = ARRAY_SIZE(battery_resources),
79 .resources = battery_resources,
80 },
81 { .name = "chtdc_ti_region", },
82};
83
84static const struct regmap_config chtdc_ti_regmap_config = {
85 .reg_bits = 8,
86 .val_bits = 8,
87 .max_register = 128,
88 .cache_type = REGCACHE_NONE,
89};
90
91static const struct regmap_irq chtdc_ti_irqs[] = {
92 REGMAP_IRQ_REG(CHTDC_TI_PWRBTN, 0, BIT(CHTDC_TI_PWRBTN)),
93 REGMAP_IRQ_REG(CHTDC_TI_DIETMPWARN, 0, BIT(CHTDC_TI_DIETMPWARN)),
94 REGMAP_IRQ_REG(CHTDC_TI_ADCCMPL, 0, BIT(CHTDC_TI_ADCCMPL)),
95 REGMAP_IRQ_REG(CHTDC_TI_VBATLOW, 0, BIT(CHTDC_TI_VBATLOW)),
96 REGMAP_IRQ_REG(CHTDC_TI_VBUSDET, 0, BIT(CHTDC_TI_VBUSDET)),
97 REGMAP_IRQ_REG(CHTDC_TI_CCEOCAL, 0, BIT(CHTDC_TI_CCEOCAL)),
98};
99
100static const struct regmap_irq_chip chtdc_ti_irq_chip = {
101 .name = KBUILD_MODNAME,
102 .irqs = chtdc_ti_irqs,
103 .num_irqs = ARRAY_SIZE(chtdc_ti_irqs),
104 .num_regs = 1,
105 .status_base = CHTDC_TI_IRQLVL1,
106 .mask_base = CHTDC_TI_MASK_IRQLVL1,
107 .ack_base = CHTDC_TI_IRQLVL1,
108};
109
110static int chtdc_ti_probe(struct i2c_client *i2c)
111{
112 struct device *dev = &i2c->dev;
113 struct intel_soc_pmic *pmic;
114 int ret;
115
116 pmic = devm_kzalloc(dev, sizeof(*pmic), GFP_KERNEL);
117 if (!pmic)
118 return -ENOMEM;
119
120 i2c_set_clientdata(i2c, pmic);
121
122 pmic->regmap = devm_regmap_init_i2c(i2c, &chtdc_ti_regmap_config);
123 if (IS_ERR(pmic->regmap))
124 return PTR_ERR(pmic->regmap);
125 pmic->irq = i2c->irq;
126
127 ret = devm_regmap_add_irq_chip(dev, pmic->regmap, pmic->irq,
128 IRQF_ONESHOT, 0,
129 &chtdc_ti_irq_chip,
130 &pmic->irq_chip_data);
131 if (ret)
132 return ret;
133
134 return devm_mfd_add_devices(dev, PLATFORM_DEVID_NONE, chtdc_ti_dev,
135 ARRAY_SIZE(chtdc_ti_dev), NULL, 0,
136 regmap_irq_get_domain(pmic->irq_chip_data));
137}
138
139static void chtdc_ti_shutdown(struct i2c_client *i2c)
140{
141 struct intel_soc_pmic *pmic = i2c_get_clientdata(i2c);
142
143 disable_irq(pmic->irq);
144}
145
146static int __maybe_unused chtdc_ti_suspend(struct device *dev)
147{
148 struct intel_soc_pmic *pmic = dev_get_drvdata(dev);
149
150 disable_irq(pmic->irq);
151
152 return 0;
153}
154
155static int __maybe_unused chtdc_ti_resume(struct device *dev)
156{
157 struct intel_soc_pmic *pmic = dev_get_drvdata(dev);
158
159 enable_irq(pmic->irq);
160
161 return 0;
162}
163
164static SIMPLE_DEV_PM_OPS(chtdc_ti_pm_ops, chtdc_ti_suspend, chtdc_ti_resume);
165
166static const struct acpi_device_id chtdc_ti_acpi_ids[] = {
167 { "INT33F5" },
168 { },
169};
170MODULE_DEVICE_TABLE(acpi, chtdc_ti_acpi_ids);
171
172static struct i2c_driver chtdc_ti_i2c_driver = {
173 .driver = {
174 .name = "intel_soc_pmic_chtdc_ti",
175 .pm = &chtdc_ti_pm_ops,
176 .acpi_match_table = chtdc_ti_acpi_ids,
177 },
178 .probe_new = chtdc_ti_probe,
179 .shutdown = chtdc_ti_shutdown,
180};
181module_i2c_driver(chtdc_ti_i2c_driver);
182
183MODULE_DESCRIPTION("I2C driver for Intel SoC Dollar Cove TI PMIC");
184MODULE_LICENSE("GPL v2");