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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 | /* * MFD core driver for the Richtek RT5033. * * RT5033 comprises multiple sub-devices switcing charger, fuel gauge, * flash LED, current source, LDO and BUCK regulators. * * Copyright (C) 2014 Samsung Electronics, Co., Ltd. * Author: Beomho Seo <beomho.seo@samsung.com> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published bythe Free Software Foundation. */ #include <linux/err.h> #include <linux/module.h> #include <linux/interrupt.h> #include <linux/of_device.h> #include <linux/mfd/core.h> #include <linux/mfd/rt5033.h> #include <linux/mfd/rt5033-private.h> static const struct regmap_irq rt5033_irqs[] = { { .mask = RT5033_PMIC_IRQ_BUCKOCP, }, { .mask = RT5033_PMIC_IRQ_BUCKLV, }, { .mask = RT5033_PMIC_IRQ_SAFELDOLV, }, { .mask = RT5033_PMIC_IRQ_LDOLV, }, { .mask = RT5033_PMIC_IRQ_OT, }, { .mask = RT5033_PMIC_IRQ_VDDA_UV, }, }; static const struct regmap_irq_chip rt5033_irq_chip = { .name = "rt5033", .status_base = RT5033_REG_PMIC_IRQ_STAT, .mask_base = RT5033_REG_PMIC_IRQ_CTRL, .mask_invert = true, .num_regs = 1, .irqs = rt5033_irqs, .num_irqs = ARRAY_SIZE(rt5033_irqs), }; static const struct mfd_cell rt5033_devs[] = { { .name = "rt5033-regulator", }, { .name = "rt5033-charger", .of_compatible = "richtek,rt5033-charger", }, { .name = "rt5033-battery", .of_compatible = "richtek,rt5033-battery", }, { .name = "rt5033-led", .of_compatible = "richtek,rt5033-led", }, }; static const struct regmap_config rt5033_regmap_config = { .reg_bits = 8, .val_bits = 8, .max_register = RT5033_REG_END, }; static int rt5033_i2c_probe(struct i2c_client *i2c, const struct i2c_device_id *id) { struct rt5033_dev *rt5033; unsigned int dev_id; int ret; rt5033 = devm_kzalloc(&i2c->dev, sizeof(*rt5033), GFP_KERNEL); if (!rt5033) return -ENOMEM; i2c_set_clientdata(i2c, rt5033); rt5033->dev = &i2c->dev; rt5033->irq = i2c->irq; rt5033->wakeup = true; rt5033->regmap = devm_regmap_init_i2c(i2c, &rt5033_regmap_config); if (IS_ERR(rt5033->regmap)) { dev_err(&i2c->dev, "Failed to allocate register map.\n"); return PTR_ERR(rt5033->regmap); } ret = regmap_read(rt5033->regmap, RT5033_REG_DEVICE_ID, &dev_id); if (ret) { dev_err(&i2c->dev, "Device not found\n"); return -ENODEV; } dev_info(&i2c->dev, "Device found Device ID: %04x\n", dev_id); ret = regmap_add_irq_chip(rt5033->regmap, rt5033->irq, IRQF_TRIGGER_FALLING | IRQF_ONESHOT, 0, &rt5033_irq_chip, &rt5033->irq_data); if (ret) { dev_err(&i2c->dev, "Failed to request IRQ %d: %d\n", rt5033->irq, ret); return ret; } ret = devm_mfd_add_devices(rt5033->dev, -1, rt5033_devs, ARRAY_SIZE(rt5033_devs), NULL, 0, regmap_irq_get_domain(rt5033->irq_data)); if (ret < 0) { dev_err(&i2c->dev, "Failed to add RT5033 child devices.\n"); return ret; } device_init_wakeup(rt5033->dev, rt5033->wakeup); return 0; } static const struct i2c_device_id rt5033_i2c_id[] = { { "rt5033", }, { } }; MODULE_DEVICE_TABLE(i2c, rt5033_i2c_id); static const struct of_device_id rt5033_dt_match[] = { { .compatible = "richtek,rt5033", }, { } }; MODULE_DEVICE_TABLE(of, rt5033_dt_match); static struct i2c_driver rt5033_driver = { .driver = { .name = "rt5033", .of_match_table = of_match_ptr(rt5033_dt_match), }, .probe = rt5033_i2c_probe, .id_table = rt5033_i2c_id, }; module_i2c_driver(rt5033_driver); MODULE_DESCRIPTION("Richtek RT5033 multi-function core driver"); MODULE_AUTHOR("Beomho Seo <beomho.seo@samsung.com>"); MODULE_LICENSE("GPL"); |