1 /* 2 * sec-core.c 3 * 4 * Copyright (c) 2012 Samsung Electronics Co., Ltd 5 * http://www.samsung.com 6 * 7 * This program is free software; you can redistribute it and/or modify it 8 * under the terms of the GNU General Public License as published by the 9 * Free Software Foundation; either version 2 of the License, or (at your 10 * option) any later version. 11 * 12 */ 13 14 #include <linux/module.h> 15 #include <linux/moduleparam.h> 16 #include <linux/init.h> 17 #include <linux/err.h> 18 #include <linux/slab.h> 19 #include <linux/i2c.h> 20 #include <linux/interrupt.h> 21 #include <linux/pm_runtime.h> 22 #include <linux/mutex.h> 23 #include <linux/mfd/core.h> 24 #include <linux/mfd/samsung/core.h> 25 #include <linux/mfd/samsung/irq.h> 26 #include <linux/mfd/samsung/rtc.h> 27 #include <linux/regmap.h> 28 29 static struct mfd_cell s5m8751_devs[] = { 30 { 31 .name = "s5m8751-pmic", 32 }, { 33 .name = "s5m-charger", 34 }, { 35 .name = "s5m8751-codec", 36 }, 37 }; 38 39 static struct mfd_cell s5m8763_devs[] = { 40 { 41 .name = "s5m8763-pmic", 42 }, { 43 .name = "s5m-rtc", 44 }, { 45 .name = "s5m-charger", 46 }, 47 }; 48 49 static struct mfd_cell s5m8767_devs[] = { 50 { 51 .name = "s5m8767-pmic", 52 }, { 53 .name = "s5m-rtc", 54 }, 55 }; 56 57 static struct mfd_cell s2mps11_devs[] = { 58 { 59 .name = "s2mps11-pmic", 60 }, 61 }; 62 63 int sec_reg_read(struct sec_pmic_dev *sec_pmic, u8 reg, void *dest) 64 { 65 return regmap_read(sec_pmic->regmap, reg, dest); 66 } 67 EXPORT_SYMBOL_GPL(sec_reg_read); 68 69 int sec_bulk_read(struct sec_pmic_dev *sec_pmic, u8 reg, int count, u8 *buf) 70 { 71 return regmap_bulk_read(sec_pmic->regmap, reg, buf, count); 72 } 73 EXPORT_SYMBOL_GPL(sec_bulk_read); 74 75 int sec_reg_write(struct sec_pmic_dev *sec_pmic, u8 reg, u8 value) 76 { 77 return regmap_write(sec_pmic->regmap, reg, value); 78 } 79 EXPORT_SYMBOL_GPL(sec_reg_write); 80 81 int sec_bulk_write(struct sec_pmic_dev *sec_pmic, u8 reg, int count, u8 *buf) 82 { 83 return regmap_raw_write(sec_pmic->regmap, reg, buf, count); 84 } 85 EXPORT_SYMBOL_GPL(sec_bulk_write); 86 87 int sec_reg_update(struct sec_pmic_dev *sec_pmic, u8 reg, u8 val, u8 mask) 88 { 89 return regmap_update_bits(sec_pmic->regmap, reg, mask, val); 90 } 91 EXPORT_SYMBOL_GPL(sec_reg_update); 92 93 static struct regmap_config sec_regmap_config = { 94 .reg_bits = 8, 95 .val_bits = 8, 96 }; 97 98 static int sec_pmic_probe(struct i2c_client *i2c, 99 const struct i2c_device_id *id) 100 { 101 struct sec_platform_data *pdata = i2c->dev.platform_data; 102 struct sec_pmic_dev *sec_pmic; 103 int ret; 104 105 sec_pmic = devm_kzalloc(&i2c->dev, sizeof(struct sec_pmic_dev), 106 GFP_KERNEL); 107 if (sec_pmic == NULL) 108 return -ENOMEM; 109 110 i2c_set_clientdata(i2c, sec_pmic); 111 sec_pmic->dev = &i2c->dev; 112 sec_pmic->i2c = i2c; 113 sec_pmic->irq = i2c->irq; 114 sec_pmic->type = id->driver_data; 115 116 if (pdata) { 117 sec_pmic->device_type = pdata->device_type; 118 sec_pmic->ono = pdata->ono; 119 sec_pmic->irq_base = pdata->irq_base; 120 sec_pmic->wakeup = pdata->wakeup; 121 } 122 123 sec_pmic->regmap = devm_regmap_init_i2c(i2c, &sec_regmap_config); 124 if (IS_ERR(sec_pmic->regmap)) { 125 ret = PTR_ERR(sec_pmic->regmap); 126 dev_err(&i2c->dev, "Failed to allocate register map: %d\n", 127 ret); 128 return ret; 129 } 130 131 sec_pmic->rtc = i2c_new_dummy(i2c->adapter, RTC_I2C_ADDR); 132 i2c_set_clientdata(sec_pmic->rtc, sec_pmic); 133 134 if (pdata && pdata->cfg_pmic_irq) 135 pdata->cfg_pmic_irq(); 136 137 sec_irq_init(sec_pmic); 138 139 pm_runtime_set_active(sec_pmic->dev); 140 141 switch (sec_pmic->device_type) { 142 case S5M8751X: 143 ret = mfd_add_devices(sec_pmic->dev, -1, s5m8751_devs, 144 ARRAY_SIZE(s5m8751_devs), NULL, 0, NULL); 145 break; 146 case S5M8763X: 147 ret = mfd_add_devices(sec_pmic->dev, -1, s5m8763_devs, 148 ARRAY_SIZE(s5m8763_devs), NULL, 0, NULL); 149 break; 150 case S5M8767X: 151 ret = mfd_add_devices(sec_pmic->dev, -1, s5m8767_devs, 152 ARRAY_SIZE(s5m8767_devs), NULL, 0, NULL); 153 break; 154 case S2MPS11X: 155 ret = mfd_add_devices(sec_pmic->dev, -1, s2mps11_devs, 156 ARRAY_SIZE(s2mps11_devs), NULL, 0, NULL); 157 break; 158 default: 159 /* If this happens the probe function is problem */ 160 BUG(); 161 } 162 163 if (ret < 0) 164 goto err; 165 166 return ret; 167 168 err: 169 mfd_remove_devices(sec_pmic->dev); 170 sec_irq_exit(sec_pmic); 171 i2c_unregister_device(sec_pmic->rtc); 172 return ret; 173 } 174 175 static int sec_pmic_remove(struct i2c_client *i2c) 176 { 177 struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c); 178 179 mfd_remove_devices(sec_pmic->dev); 180 sec_irq_exit(sec_pmic); 181 i2c_unregister_device(sec_pmic->rtc); 182 return 0; 183 } 184 185 static const struct i2c_device_id sec_pmic_id[] = { 186 { "sec_pmic", 0 }, 187 { } 188 }; 189 MODULE_DEVICE_TABLE(i2c, sec_pmic_id); 190 191 static struct i2c_driver sec_pmic_driver = { 192 .driver = { 193 .name = "sec_pmic", 194 .owner = THIS_MODULE, 195 }, 196 .probe = sec_pmic_probe, 197 .remove = sec_pmic_remove, 198 .id_table = sec_pmic_id, 199 }; 200 201 static int __init sec_pmic_init(void) 202 { 203 return i2c_add_driver(&sec_pmic_driver); 204 } 205 206 subsys_initcall(sec_pmic_init); 207 208 static void __exit sec_pmic_exit(void) 209 { 210 i2c_del_driver(&sec_pmic_driver); 211 } 212 module_exit(sec_pmic_exit); 213 214 MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>"); 215 MODULE_DESCRIPTION("Core support for the S5M MFD"); 216 MODULE_LICENSE("GPL"); 217