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6bac0606 TI |
1 | /* |
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 */ | |
27 | enum { | |
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 | ||
38 | static struct resource power_button_resources[] = { | |
39 | DEFINE_RES_IRQ(CHTDC_TI_PWRBTN), | |
40 | }; | |
41 | ||
42 | static struct resource thermal_resources[] = { | |
43 | DEFINE_RES_IRQ(CHTDC_TI_DIETMPWARN), | |
44 | }; | |
45 | ||
46 | static struct resource adc_resources[] = { | |
47 | DEFINE_RES_IRQ(CHTDC_TI_ADCCMPL), | |
48 | }; | |
49 | ||
50 | static struct resource pwrsrc_resources[] = { | |
51 | DEFINE_RES_IRQ(CHTDC_TI_VBUSDET), | |
52 | }; | |
53 | ||
54 | static struct resource battery_resources[] = { | |
55 | DEFINE_RES_IRQ(CHTDC_TI_VBATLOW), | |
56 | DEFINE_RES_IRQ(CHTDC_TI_CCEOCAL), | |
57 | }; | |
58 | ||
59 | static 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 | ||
84 | static 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 | ||
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)), | |
98 | }; | |
99 | ||
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), | |
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 | ||
110 | static 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 | ||
139 | static 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 | ||
146 | static 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 | ||
155 | static 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 | ||
164 | static SIMPLE_DEV_PM_OPS(chtdc_ti_pm_ops, chtdc_ti_suspend, chtdc_ti_resume); | |
165 | ||
166 | static const struct acpi_device_id chtdc_ti_acpi_ids[] = { | |
167 | { "INT33F5" }, | |
168 | { }, | |
169 | }; | |
170 | MODULE_DEVICE_TABLE(acpi, chtdc_ti_acpi_ids); | |
171 | ||
172 | static 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 | }; | |
181 | module_i2c_driver(chtdc_ti_i2c_driver); | |
182 | ||
183 | MODULE_DESCRIPTION("I2C driver for Intel SoC Dollar Cove TI PMIC"); | |
184 | MODULE_LICENSE("GPL v2"); |