2 * Device access for Dollar Cove TI PMIC
4 * Copyright (c) 2014, Intel Corporation.
5 * Author: Ramakrishna Pallala <ramakrishna.pallala@intel.com>
7 * Cleanup and forward-ported
8 * Copyright (c) 2017 Takashi Iwai <tiwai@suse.de>
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.
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>
23 #define CHTDC_TI_IRQLVL1 0x01
24 #define CHTDC_TI_MASK_IRQLVL1 0x02
28 CHTDC_TI_PWRBTN = 0, /* power button */
29 CHTDC_TI_DIETMPWARN, /* thermal */
30 CHTDC_TI_ADCCMPL, /* ADC */
32 CHTDC_TI_VBATLOW = 4, /* battery */
33 CHTDC_TI_VBUSDET, /* power source */
35 CHTDC_TI_CCEOCAL = 7, /* battery */
38 static struct resource power_button_resources[] = {
39 DEFINE_RES_IRQ(CHTDC_TI_PWRBTN),
42 static struct resource thermal_resources[] = {
43 DEFINE_RES_IRQ(CHTDC_TI_DIETMPWARN),
46 static struct resource adc_resources[] = {
47 DEFINE_RES_IRQ(CHTDC_TI_ADCCMPL),
50 static struct resource pwrsrc_resources[] = {
51 DEFINE_RES_IRQ(CHTDC_TI_VBUSDET),
54 static struct resource battery_resources[] = {
55 DEFINE_RES_IRQ(CHTDC_TI_VBATLOW),
56 DEFINE_RES_IRQ(CHTDC_TI_CCEOCAL),
59 static struct mfd_cell chtdc_ti_dev[] = {
61 .name = "chtdc_ti_pwrbtn",
62 .num_resources = ARRAY_SIZE(power_button_resources),
63 .resources = power_button_resources,
65 .name = "chtdc_ti_adc",
66 .num_resources = ARRAY_SIZE(adc_resources),
67 .resources = adc_resources,
69 .name = "chtdc_ti_thermal",
70 .num_resources = ARRAY_SIZE(thermal_resources),
71 .resources = thermal_resources,
73 .name = "chtdc_ti_pwrsrc",
74 .num_resources = ARRAY_SIZE(pwrsrc_resources),
75 .resources = pwrsrc_resources,
77 .name = "chtdc_ti_battery",
78 .num_resources = ARRAY_SIZE(battery_resources),
79 .resources = battery_resources,
81 { .name = "chtdc_ti_region", },
84 static const struct regmap_config chtdc_ti_regmap_config = {
88 .cache_type = REGCACHE_NONE,
91 static 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)),
100 static 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),
105 .status_base = CHTDC_TI_IRQLVL1,
106 .mask_base = CHTDC_TI_MASK_IRQLVL1,
107 .ack_base = CHTDC_TI_IRQLVL1,
110 static int chtdc_ti_probe(struct i2c_client *i2c)
112 struct device *dev = &i2c->dev;
113 struct intel_soc_pmic *pmic;
116 pmic = devm_kzalloc(dev, sizeof(*pmic), GFP_KERNEL);
120 i2c_set_clientdata(i2c, pmic);
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;
127 ret = devm_regmap_add_irq_chip(dev, pmic->regmap, pmic->irq,
130 &pmic->irq_chip_data);
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));
139 static void chtdc_ti_shutdown(struct i2c_client *i2c)
141 struct intel_soc_pmic *pmic = i2c_get_clientdata(i2c);
143 disable_irq(pmic->irq);
146 static int __maybe_unused chtdc_ti_suspend(struct device *dev)
148 struct intel_soc_pmic *pmic = dev_get_drvdata(dev);
150 disable_irq(pmic->irq);
155 static int __maybe_unused chtdc_ti_resume(struct device *dev)
157 struct intel_soc_pmic *pmic = dev_get_drvdata(dev);
159 enable_irq(pmic->irq);
164 static SIMPLE_DEV_PM_OPS(chtdc_ti_pm_ops, chtdc_ti_suspend, chtdc_ti_resume);
166 static const struct acpi_device_id chtdc_ti_acpi_ids[] = {
170 MODULE_DEVICE_TABLE(acpi, chtdc_ti_acpi_ids);
172 static struct i2c_driver chtdc_ti_i2c_driver = {
174 .name = "intel_soc_pmic_chtdc_ti",
175 .pm = &chtdc_ti_pm_ops,
176 .acpi_match_table = chtdc_ti_acpi_ids,
178 .probe_new = chtdc_ti_probe,
179 .shutdown = chtdc_ti_shutdown,
181 module_i2c_driver(chtdc_ti_i2c_driver);
183 MODULE_DESCRIPTION("I2C driver for Intel SoC Dollar Cove TI PMIC");
184 MODULE_LICENSE("GPL v2");