1e0cbc202SOkan Sahin // SPDX-License-Identifier: GPL-2.0-or-later
2e0cbc202SOkan Sahin /*
3e0cbc202SOkan Sahin * Copyright (c) 2022 Analog Devices, Inc.
4e0cbc202SOkan Sahin * Driver for the MAX77540 and MAX77541
5e0cbc202SOkan Sahin */
6e0cbc202SOkan Sahin
7e0cbc202SOkan Sahin #include <linux/i2c.h>
8e0cbc202SOkan Sahin #include <linux/interrupt.h>
9e0cbc202SOkan Sahin #include <linux/mfd/core.h>
10e0cbc202SOkan Sahin #include <linux/mfd/max77541.h>
11e0cbc202SOkan Sahin #include <linux/property.h>
12e0cbc202SOkan Sahin #include <linux/regmap.h>
13e0cbc202SOkan Sahin
14e0cbc202SOkan Sahin static const struct regmap_config max77541_regmap_config = {
15e0cbc202SOkan Sahin .reg_bits = 8,
16e0cbc202SOkan Sahin .val_bits = 8,
17e0cbc202SOkan Sahin };
18e0cbc202SOkan Sahin
19e0cbc202SOkan Sahin static const struct regmap_irq max77541_src_irqs[] = {
20e0cbc202SOkan Sahin { .mask = MAX77541_BIT_INT_SRC_TOPSYS },
21e0cbc202SOkan Sahin { .mask = MAX77541_BIT_INT_SRC_BUCK },
22e0cbc202SOkan Sahin };
23e0cbc202SOkan Sahin
24e0cbc202SOkan Sahin static const struct regmap_irq_chip max77541_src_irq_chip = {
25e0cbc202SOkan Sahin .name = "max77541-src",
26e0cbc202SOkan Sahin .status_base = MAX77541_REG_INT_SRC,
27e0cbc202SOkan Sahin .mask_base = MAX77541_REG_INT_SRC_M,
28e0cbc202SOkan Sahin .num_regs = 1,
29e0cbc202SOkan Sahin .irqs = max77541_src_irqs,
30e0cbc202SOkan Sahin .num_irqs = ARRAY_SIZE(max77541_src_irqs),
31e0cbc202SOkan Sahin };
32e0cbc202SOkan Sahin
33e0cbc202SOkan Sahin static const struct regmap_irq max77541_topsys_irqs[] = {
34e0cbc202SOkan Sahin { .mask = MAX77541_BIT_TOPSYS_INT_TJ_120C },
35e0cbc202SOkan Sahin { .mask = MAX77541_BIT_TOPSYS_INT_TJ_140C },
36e0cbc202SOkan Sahin { .mask = MAX77541_BIT_TOPSYS_INT_TSHDN },
37e0cbc202SOkan Sahin { .mask = MAX77541_BIT_TOPSYS_INT_UVLO },
38e0cbc202SOkan Sahin { .mask = MAX77541_BIT_TOPSYS_INT_ALT_SWO },
39e0cbc202SOkan Sahin { .mask = MAX77541_BIT_TOPSYS_INT_EXT_FREQ_DET },
40e0cbc202SOkan Sahin };
41e0cbc202SOkan Sahin
42e0cbc202SOkan Sahin static const struct regmap_irq_chip max77541_topsys_irq_chip = {
43e0cbc202SOkan Sahin .name = "max77541-topsys",
44e0cbc202SOkan Sahin .status_base = MAX77541_REG_TOPSYS_INT,
45e0cbc202SOkan Sahin .mask_base = MAX77541_REG_TOPSYS_INT_M,
46e0cbc202SOkan Sahin .num_regs = 1,
47e0cbc202SOkan Sahin .irqs = max77541_topsys_irqs,
48e0cbc202SOkan Sahin .num_irqs = ARRAY_SIZE(max77541_topsys_irqs),
49e0cbc202SOkan Sahin };
50e0cbc202SOkan Sahin
51e0cbc202SOkan Sahin static const struct regmap_irq max77541_buck_irqs[] = {
52e0cbc202SOkan Sahin { .mask = MAX77541_BIT_BUCK_INT_M1_POK_FLT },
53e0cbc202SOkan Sahin { .mask = MAX77541_BIT_BUCK_INT_M2_POK_FLT },
54e0cbc202SOkan Sahin { .mask = MAX77541_BIT_BUCK_INT_M1_SCFLT },
55e0cbc202SOkan Sahin { .mask = MAX77541_BIT_BUCK_INT_M2_SCFLT },
56e0cbc202SOkan Sahin };
57e0cbc202SOkan Sahin
58e0cbc202SOkan Sahin static const struct regmap_irq_chip max77541_buck_irq_chip = {
59e0cbc202SOkan Sahin .name = "max77541-buck",
60e0cbc202SOkan Sahin .status_base = MAX77541_REG_BUCK_INT,
61e0cbc202SOkan Sahin .mask_base = MAX77541_REG_BUCK_INT_M,
62e0cbc202SOkan Sahin .num_regs = 1,
63e0cbc202SOkan Sahin .irqs = max77541_buck_irqs,
64e0cbc202SOkan Sahin .num_irqs = ARRAY_SIZE(max77541_buck_irqs),
65e0cbc202SOkan Sahin };
66e0cbc202SOkan Sahin
67e0cbc202SOkan Sahin static const struct regmap_irq max77541_adc_irqs[] = {
68e0cbc202SOkan Sahin { .mask = MAX77541_BIT_ADC_INT_CH1_I },
69e0cbc202SOkan Sahin { .mask = MAX77541_BIT_ADC_INT_CH2_I },
70e0cbc202SOkan Sahin { .mask = MAX77541_BIT_ADC_INT_CH3_I },
71e0cbc202SOkan Sahin { .mask = MAX77541_BIT_ADC_INT_CH6_I },
72e0cbc202SOkan Sahin };
73e0cbc202SOkan Sahin
74e0cbc202SOkan Sahin static const struct regmap_irq_chip max77541_adc_irq_chip = {
75e0cbc202SOkan Sahin .name = "max77541-adc",
76e0cbc202SOkan Sahin .status_base = MAX77541_REG_ADC_INT,
77e0cbc202SOkan Sahin .mask_base = MAX77541_REG_ADC_INT_M,
78e0cbc202SOkan Sahin .num_regs = 1,
79e0cbc202SOkan Sahin .irqs = max77541_adc_irqs,
80e0cbc202SOkan Sahin .num_irqs = ARRAY_SIZE(max77541_adc_irqs),
81e0cbc202SOkan Sahin };
82e0cbc202SOkan Sahin
83e0cbc202SOkan Sahin static const struct mfd_cell max77540_devs[] = {
84e0cbc202SOkan Sahin MFD_CELL_OF("max77540-regulator", NULL, NULL, 0, 0, NULL),
85e0cbc202SOkan Sahin };
86e0cbc202SOkan Sahin
87e0cbc202SOkan Sahin static const struct mfd_cell max77541_devs[] = {
88e0cbc202SOkan Sahin MFD_CELL_OF("max77541-regulator", NULL, NULL, 0, 0, NULL),
89e0cbc202SOkan Sahin MFD_CELL_OF("max77541-adc", NULL, NULL, 0, 0, NULL),
90e0cbc202SOkan Sahin };
91e0cbc202SOkan Sahin
max77541_pmic_irq_init(struct device * dev)92e0cbc202SOkan Sahin static int max77541_pmic_irq_init(struct device *dev)
93e0cbc202SOkan Sahin {
94e0cbc202SOkan Sahin struct max77541 *max77541 = dev_get_drvdata(dev);
95e0cbc202SOkan Sahin int irq = max77541->i2c->irq;
96e0cbc202SOkan Sahin int ret;
97e0cbc202SOkan Sahin
98e0cbc202SOkan Sahin ret = devm_regmap_add_irq_chip(dev, max77541->regmap, irq,
99e0cbc202SOkan Sahin IRQF_ONESHOT | IRQF_SHARED, 0,
100e0cbc202SOkan Sahin &max77541_src_irq_chip,
101e0cbc202SOkan Sahin &max77541->irq_data);
102e0cbc202SOkan Sahin if (ret)
103e0cbc202SOkan Sahin return ret;
104e0cbc202SOkan Sahin
105e0cbc202SOkan Sahin ret = devm_regmap_add_irq_chip(dev, max77541->regmap, irq,
106e0cbc202SOkan Sahin IRQF_ONESHOT | IRQF_SHARED, 0,
107e0cbc202SOkan Sahin &max77541_topsys_irq_chip,
108e0cbc202SOkan Sahin &max77541->irq_topsys);
109e0cbc202SOkan Sahin if (ret)
110e0cbc202SOkan Sahin return ret;
111e0cbc202SOkan Sahin
112e0cbc202SOkan Sahin ret = devm_regmap_add_irq_chip(dev, max77541->regmap, irq,
113e0cbc202SOkan Sahin IRQF_ONESHOT | IRQF_SHARED, 0,
114e0cbc202SOkan Sahin &max77541_buck_irq_chip,
115e0cbc202SOkan Sahin &max77541->irq_buck);
116e0cbc202SOkan Sahin if (ret)
117e0cbc202SOkan Sahin return ret;
118e0cbc202SOkan Sahin
119e0cbc202SOkan Sahin if (max77541->id == MAX77541) {
120e0cbc202SOkan Sahin ret = devm_regmap_add_irq_chip(dev, max77541->regmap, irq,
121e0cbc202SOkan Sahin IRQF_ONESHOT | IRQF_SHARED, 0,
122e0cbc202SOkan Sahin &max77541_adc_irq_chip,
123e0cbc202SOkan Sahin &max77541->irq_adc);
124e0cbc202SOkan Sahin if (ret)
125e0cbc202SOkan Sahin return ret;
126e0cbc202SOkan Sahin }
127e0cbc202SOkan Sahin
128e0cbc202SOkan Sahin return 0;
129e0cbc202SOkan Sahin }
130e0cbc202SOkan Sahin
max77541_pmic_setup(struct device * dev)131e0cbc202SOkan Sahin static int max77541_pmic_setup(struct device *dev)
132e0cbc202SOkan Sahin {
133e0cbc202SOkan Sahin struct max77541 *max77541 = dev_get_drvdata(dev);
134e0cbc202SOkan Sahin const struct mfd_cell *cells;
135e0cbc202SOkan Sahin int n_devs;
136e0cbc202SOkan Sahin int ret;
137e0cbc202SOkan Sahin
138e0cbc202SOkan Sahin switch (max77541->id) {
139e0cbc202SOkan Sahin case MAX77540:
140e0cbc202SOkan Sahin cells = max77540_devs;
141e0cbc202SOkan Sahin n_devs = ARRAY_SIZE(max77540_devs);
142e0cbc202SOkan Sahin break;
143e0cbc202SOkan Sahin case MAX77541:
144e0cbc202SOkan Sahin cells = max77541_devs;
145e0cbc202SOkan Sahin n_devs = ARRAY_SIZE(max77541_devs);
146e0cbc202SOkan Sahin break;
147e0cbc202SOkan Sahin default:
148e0cbc202SOkan Sahin return -EINVAL;
149e0cbc202SOkan Sahin }
150e0cbc202SOkan Sahin
151e0cbc202SOkan Sahin ret = max77541_pmic_irq_init(dev);
152e0cbc202SOkan Sahin if (ret)
153e0cbc202SOkan Sahin return dev_err_probe(dev, ret, "Failed to initialize IRQ\n");
154e0cbc202SOkan Sahin
155e0cbc202SOkan Sahin ret = device_init_wakeup(dev, true);
156e0cbc202SOkan Sahin if (ret)
157e0cbc202SOkan Sahin return dev_err_probe(dev, ret, "Unable to init wakeup\n");
158e0cbc202SOkan Sahin
159e0cbc202SOkan Sahin return devm_mfd_add_devices(dev, PLATFORM_DEVID_NONE,
160e0cbc202SOkan Sahin cells, n_devs, NULL, 0, NULL);
161e0cbc202SOkan Sahin }
162e0cbc202SOkan Sahin
max77541_probe(struct i2c_client * client)163e0cbc202SOkan Sahin static int max77541_probe(struct i2c_client *client)
164e0cbc202SOkan Sahin {
165e0cbc202SOkan Sahin const struct i2c_device_id *id = i2c_client_get_device_id(client);
166e0cbc202SOkan Sahin struct device *dev = &client->dev;
167e0cbc202SOkan Sahin struct max77541 *max77541;
168e0cbc202SOkan Sahin
169e0cbc202SOkan Sahin max77541 = devm_kzalloc(dev, sizeof(*max77541), GFP_KERNEL);
170e0cbc202SOkan Sahin if (!max77541)
171e0cbc202SOkan Sahin return -ENOMEM;
172e0cbc202SOkan Sahin
173e0cbc202SOkan Sahin i2c_set_clientdata(client, max77541);
174e0cbc202SOkan Sahin max77541->i2c = client;
175e0cbc202SOkan Sahin
176*b1da9966SKrzysztof Kozlowski max77541->id = (uintptr_t)device_get_match_data(dev);
177e0cbc202SOkan Sahin if (!max77541->id)
178e0cbc202SOkan Sahin max77541->id = (enum max7754x_ids)id->driver_data;
179e0cbc202SOkan Sahin
180e0cbc202SOkan Sahin if (!max77541->id)
181e0cbc202SOkan Sahin return -EINVAL;
182e0cbc202SOkan Sahin
183e0cbc202SOkan Sahin max77541->regmap = devm_regmap_init_i2c(client,
184e0cbc202SOkan Sahin &max77541_regmap_config);
185e0cbc202SOkan Sahin if (IS_ERR(max77541->regmap))
186e0cbc202SOkan Sahin return dev_err_probe(dev, PTR_ERR(max77541->regmap),
187e0cbc202SOkan Sahin "Failed to allocate register map\n");
188e0cbc202SOkan Sahin
189e0cbc202SOkan Sahin return max77541_pmic_setup(dev);
190e0cbc202SOkan Sahin }
191e0cbc202SOkan Sahin
192e0cbc202SOkan Sahin static const struct of_device_id max77541_of_id[] = {
193e0cbc202SOkan Sahin {
194e0cbc202SOkan Sahin .compatible = "adi,max77540",
195e0cbc202SOkan Sahin .data = (void *)MAX77540,
196e0cbc202SOkan Sahin },
197e0cbc202SOkan Sahin {
198e0cbc202SOkan Sahin .compatible = "adi,max77541",
199e0cbc202SOkan Sahin .data = (void *)MAX77541,
200e0cbc202SOkan Sahin },
201e0cbc202SOkan Sahin { }
202e0cbc202SOkan Sahin };
203e0cbc202SOkan Sahin MODULE_DEVICE_TABLE(of, max77541_of_id);
204e0cbc202SOkan Sahin
205e0cbc202SOkan Sahin static const struct i2c_device_id max77541_id[] = {
206e0cbc202SOkan Sahin { "max77540", MAX77540 },
207e0cbc202SOkan Sahin { "max77541", MAX77541 },
208e0cbc202SOkan Sahin { }
209e0cbc202SOkan Sahin };
210e0cbc202SOkan Sahin MODULE_DEVICE_TABLE(i2c, max77541_id);
211e0cbc202SOkan Sahin
212e0cbc202SOkan Sahin static struct i2c_driver max77541_driver = {
213e0cbc202SOkan Sahin .driver = {
214e0cbc202SOkan Sahin .name = "max77541",
215e0cbc202SOkan Sahin .of_match_table = max77541_of_id,
216e0cbc202SOkan Sahin },
217a6b6790cSUwe Kleine-König .probe = max77541_probe,
218e0cbc202SOkan Sahin .id_table = max77541_id,
219e0cbc202SOkan Sahin };
220e0cbc202SOkan Sahin module_i2c_driver(max77541_driver);
221e0cbc202SOkan Sahin
222e0cbc202SOkan Sahin MODULE_DESCRIPTION("MAX7740/MAX7741 Driver");
223e0cbc202SOkan Sahin MODULE_AUTHOR("Okan Sahin <okan.sahin@analog.com>");
224e0cbc202SOkan Sahin MODULE_LICENSE("GPL");
225