/* * s2mps11.c * * Copyright (c) 2012-2014 Samsung Electronics Co., Ltd * http://www.samsung.com * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * */ #include #include #include #include #include #include #include #include #include #include #include #include #include struct s2mps11_info { struct regulator_dev **rdev; unsigned int rdev_num; struct sec_opmode_data *opmode; int ramp_delay2; int ramp_delay34; int ramp_delay5; int ramp_delay16; int ramp_delay7810; int ramp_delay9; bool buck6_ramp; bool buck2_ramp; bool buck3_ramp; bool buck4_ramp; }; /* LDO_EN/BUCK_EN register values for enabling/disabling regulator */ static unsigned int s2mps14_opmode_reg[4] = { [S2MPS14_REGULATOR_OPMODE_OFF] = 0x0, [S2MPS14_REGULATOR_OPMODE_ON] = 0x3, [S2MPS14_REGULATOR_OPMODE_RESERVED] = 0x2, [S2MPS14_REGULATOR_OPMODE_SUSPEND] = 0x1, }; static int s2mps14_get_opmode(struct regulator_dev *rdev) { int i, reg_id = rdev_get_id(rdev); int mode = -EINVAL; struct s2mps11_info *s2mps11 = rdev_get_drvdata(rdev); for (i = 0; i < s2mps11->rdev_num; i++) { if (s2mps11->opmode[i].id == reg_id) { mode = s2mps11->opmode[i].mode; break; } } if (mode == -EINVAL) { dev_warn(rdev_get_dev(rdev), "No op_mode in the driver for regulator %s\n", rdev->desc->name); return mode; } return s2mps14_opmode_reg[mode] << S2MPS14_ENCTRL_SHIFT; } static int s2mps14_reg_enable(struct regulator_dev *rdev) { int enable_ctrl = s2mps14_get_opmode(rdev); if (enable_ctrl < 0) return enable_ctrl; return sec_reg_update(rdev->regmap, rdev->desc->enable_reg, S2MPS14_ENCTRL_MASK, enable_ctrl); } static int get_ramp_delay(int ramp_delay) { unsigned char cnt = 0; ramp_delay /= 6; while (true) { ramp_delay = ramp_delay >> 1; if (ramp_delay == 0) break; cnt++; } return cnt; } static struct regulator_ops s2mps11_reg_ops = { .list_voltage = regulator_list_voltage_linear, .map_voltage = regulator_map_voltage_linear, .is_enabled = regulator_is_enabled_regmap, .enable = regulator_enable_regmap, .disable = regulator_disable_regmap, .get_voltage_sel = regulator_get_voltage_sel_regmap, .set_voltage_sel = regulator_set_voltage_sel_regmap, .set_voltage_time_sel = regulator_set_voltage_time_sel, }; #define regulator_desc_s2mps11_ldo1(num) { \ .name = "LDO"#num, \ .id = S2MPS11_LDO##num, \ .ops = &s2mps11_reg_ops, \ .type = REGULATOR_VOLTAGE, \ .owner = THIS_MODULE, \ .min_uV = S2MPS11_LDO_MIN, \ .uV_step = S2MPS11_LDO_STEP1, \ .n_voltages = S2MPS11_LDO_N_VOLTAGES, \ .vsel_reg = S2MPS11_REG_L1CTRL + num - 1, \ .vsel_mask = S2MPS11_LDO_VSEL_MASK, \ .enable_reg = S2MPS11_REG_L1CTRL + num - 1, \ .enable_mask = S2MPS11_ENABLE_MASK \ } #define regulator_desc_s2mps11_ldo2(num) { \ .name = "LDO"#num, \ .id = S2MPS11_LDO##num, \ .ops = &s2mps11_reg_ops, \ .type = REGULATOR_VOLTAGE, \ .owner = THIS_MODULE, \ .min_uV = S2MPS11_LDO_MIN, \ .uV_step = S2MPS11_LDO_STEP2, \ .n_voltages = S2MPS11_LDO_N_VOLTAGES, \ .vsel_reg = S2MPS11_REG_L1CTRL + num - 1, \ .vsel_mask = S2MPS11_LDO_VSEL_MASK, \ .enable_reg = S2MPS11_REG_L1CTRL + num - 1, \ .enable_mask = S2MPS11_ENABLE_MASK \ } #define regulator_desc_s2mps11_buck1_4(num) { \ .name = "BUCK"#num, \ .id = S2MPS11_BUCK##num, \ .ops = &s2mps11_reg_ops, \ .type = REGULATOR_VOLTAGE, \ .owner = THIS_MODULE, \ .min_uV = S2MPS11_BUCK_MIN1, \ .uV_step = S2MPS11_BUCK_STEP1, \ .n_voltages = S2MPS11_BUCK_N_VOLTAGES, \ .vsel_reg = S2MPS11_REG_B1CTRL2 + (num - 1) * 2, \ .vsel_mask = S2MPS11_BUCK_VSEL_MASK, \ .enable_reg = S2MPS11_REG_B1CTRL1 + (num - 1) * 2, \ .enable_mask = S2MPS11_ENABLE_MASK \ } #define regulator_desc_s2mps11_buck5 { \ .name = "BUCK5", \ .id = S2MPS11_BUCK5, \ .ops = &s2mps11_reg_ops, \ .type = REGULATOR_VOLTAGE, \ .owner = THIS_MODULE, \ .min_uV = S2MPS11_BUCK_MIN1, \ .uV_step = S2MPS11_BUCK_STEP1, \ .n_voltages = S2MPS11_BUCK_N_VOLTAGES, \ .vsel_reg = S2MPS11_REG_B5CTRL2, \ .vsel_mask = S2MPS11_BUCK_VSEL_MASK, \ .enable_reg = S2MPS11_REG_B5CTRL1, \ .enable_mask = S2MPS11_ENABLE_MASK \ } #define regulator_desc_s2mps11_buck6_8(num) { \ .name = "BUCK"#num, \ .id = S2MPS11_BUCK##num, \ .ops = &s2mps11_reg_ops, \ .type = REGULATOR_VOLTAGE, \ .owner = THIS_MODULE, \ .min_uV = S2MPS11_BUCK_MIN1, \ .uV_step = S2MPS11_BUCK_STEP1, \ .n_voltages = S2MPS11_BUCK_N_VOLTAGES, \ .vsel_reg = S2MPS11_REG_B6CTRL2 + (num - 6) * 2, \ .vsel_mask = S2MPS11_BUCK_VSEL_MASK, \ .enable_reg = S2MPS11_REG_B6CTRL1 + (num - 6) * 2, \ .enable_mask = S2MPS11_ENABLE_MASK \ } #define regulator_desc_s2mps11_buck9 { \ .name = "BUCK9", \ .id = S2MPS11_BUCK9, \ .ops = &s2mps11_reg_ops, \ .type = REGULATOR_VOLTAGE, \ .owner = THIS_MODULE, \ .min_uV = S2MPS11_BUCK_MIN3, \ .uV_step = S2MPS11_BUCK_STEP3, \ .n_voltages = S2MPS11_BUCK_N_VOLTAGES, \ .vsel_reg = S2MPS11_REG_B9CTRL2, \ .vsel_mask = S2MPS11_BUCK_VSEL_MASK, \ .enable_reg = S2MPS11_REG_B9CTRL1, \ .enable_mask = S2MPS11_ENABLE_MASK \ } #define regulator_desc_s2mps11_buck10 { \ .name = "BUCK10", \ .id = S2MPS11_BUCK10, \ .ops = &s2mps11_reg_ops, \ .type = REGULATOR_VOLTAGE, \ .owner = THIS_MODULE, \ .min_uV = S2MPS11_BUCK_MIN2, \ .uV_step = S2MPS11_BUCK_STEP2, \ .n_voltages = S2MPS11_BUCK_N_VOLTAGES, \ .vsel_reg = S2MPS11_REG_B10CTRL2, \ .vsel_mask = S2MPS11_BUCK_VSEL_MASK, \ .enable_reg = S2MPS11_REG_B10CTRL1, \ .enable_mask = S2MPS11_ENABLE_MASK \ } static const struct regulator_desc s2mps11_regulators[] = { regulator_desc_s2mps11_ldo2(1), regulator_desc_s2mps11_ldo1(2), regulator_desc_s2mps11_ldo1(3), regulator_desc_s2mps11_ldo1(4), regulator_desc_s2mps11_ldo1(5), regulator_desc_s2mps11_ldo2(6), regulator_desc_s2mps11_ldo1(7), regulator_desc_s2mps11_ldo1(8), regulator_desc_s2mps11_ldo1(9), regulator_desc_s2mps11_ldo1(10), regulator_desc_s2mps11_ldo2(11), regulator_desc_s2mps11_ldo1(12), regulator_desc_s2mps11_ldo1(13), regulator_desc_s2mps11_ldo1(14), regulator_desc_s2mps11_ldo1(15), regulator_desc_s2mps11_ldo1(16), regulator_desc_s2mps11_ldo1(17), regulator_desc_s2mps11_ldo1(18), regulator_desc_s2mps11_ldo1(19), regulator_desc_s2mps11_ldo1(20), regulator_desc_s2mps11_ldo1(21), regulator_desc_s2mps11_ldo2(22), regulator_desc_s2mps11_ldo2(23), regulator_desc_s2mps11_ldo1(24), regulator_desc_s2mps11_ldo1(25), regulator_desc_s2mps11_ldo1(26), regulator_desc_s2mps11_ldo2(27), regulator_desc_s2mps11_ldo1(28), regulator_desc_s2mps11_ldo1(29), regulator_desc_s2mps11_ldo1(30), regulator_desc_s2mps11_ldo1(31), regulator_desc_s2mps11_ldo1(32), regulator_desc_s2mps11_ldo1(33), regulator_desc_s2mps11_ldo1(34), regulator_desc_s2mps11_ldo1(35), regulator_desc_s2mps11_ldo1(36), regulator_desc_s2mps11_ldo1(37), regulator_desc_s2mps11_ldo1(38), regulator_desc_s2mps11_buck1_4(1), regulator_desc_s2mps11_buck1_4(2), regulator_desc_s2mps11_buck1_4(3), regulator_desc_s2mps11_buck1_4(4), regulator_desc_s2mps11_buck5, regulator_desc_s2mps11_buck6_8(6), regulator_desc_s2mps11_buck6_8(7), regulator_desc_s2mps11_buck6_8(8), regulator_desc_s2mps11_buck9, regulator_desc_s2mps11_buck10, }; static struct regulator_ops s2mps14_reg_ops = { .list_voltage = regulator_list_voltage_linear, .map_voltage = regulator_map_voltage_linear, .is_enabled = regulator_is_enabled_regmap, .enable = s2mps14_reg_enable, .disable = regulator_disable_regmap, .get_voltage_sel = regulator_get_voltage_sel_regmap, .set_voltage_sel = regulator_set_voltage_sel_regmap, .set_voltage_time_sel = regulator_set_voltage_time_sel, }; #define regulator_desc_s2mps14_ldo1(num) { \ .name = "LDO"#num, \ .id = S2MPS14_LDO##num, \ .ops = &s2mps14_reg_ops, \ .type = REGULATOR_VOLTAGE, \ .owner = THIS_MODULE, \ .min_uV = S2MPS14_LDO_MIN_800MV, \ .uV_step = S2MPS14_LDO_STEP_25MV, \ .n_voltages = S2MPS14_LDO_N_VOLTAGES, \ .vsel_reg = S2MPS14_REG_L1CTRL + num - 1, \ .vsel_mask = S2MPS14_LDO_VSEL_MASK, \ .enable_reg = S2MPS14_REG_L1CTRL + num - 1, \ .enable_mask = S2MPS14_ENABLE_MASK \ } #define regulator_desc_s2mps14_ldo2(num) { \ .name = "LDO"#num, \ .id = S2MPS14_LDO##num, \ .ops = &s2mps14_reg_ops, \ .type = REGULATOR_VOLTAGE, \ .owner = THIS_MODULE, \ .min_uV = S2MPS14_LDO_MIN_1800MV, \ .uV_step = S2MPS14_LDO_STEP_25MV, \ .n_voltages = S2MPS14_LDO_N_VOLTAGES, \ .vsel_reg = S2MPS14_REG_L1CTRL + num - 1, \ .vsel_mask = S2MPS14_LDO_VSEL_MASK, \ .enable_reg = S2MPS14_REG_L1CTRL + num - 1, \ .enable_mask = S2MPS14_ENABLE_MASK \ } #define regulator_desc_s2mps14_ldo3(num) { \ .name = "LDO"#num, \ .id = S2MPS14_LDO##num, \ .ops = &s2mps14_reg_ops, \ .type = REGULATOR_VOLTAGE, \ .owner = THIS_MODULE, \ .min_uV = S2MPS14_LDO_MIN_800MV, \ .uV_step = S2MPS14_LDO_STEP_12_5MV, \ .n_voltages = S2MPS14_LDO_N_VOLTAGES, \ .vsel_reg = S2MPS14_REG_L1CTRL + num - 1, \ .vsel_mask = S2MPS14_LDO_VSEL_MASK, \ .enable_reg = S2MPS14_REG_L1CTRL + num - 1, \ .enable_mask = S2MPS14_ENABLE_MASK \ } #define regulator_desc_s2mps14_buck1235(num) { \ .name = "BUCK"#num, \ .id = S2MPS14_BUCK##num, \ .ops = &s2mps14_reg_ops, \ .type = REGULATOR_VOLTAGE, \ .owner = THIS_MODULE, \ .min_uV = S2MPS14_BUCK1235_MIN_600MV, \ .uV_step = S2MPS14_BUCK1235_STEP_6_25MV, \ .n_voltages = S2MPS14_BUCK_N_VOLTAGES, \ .linear_min_sel = S2MPS14_BUCK1235_START_SEL, \ .ramp_delay = S2MPS14_BUCK_RAMP_DELAY, \ .vsel_reg = S2MPS14_REG_B1CTRL2 + (num - 1) * 2, \ .vsel_mask = S2MPS14_BUCK_VSEL_MASK, \ .enable_reg = S2MPS14_REG_B1CTRL1 + (num - 1) * 2, \ .enable_mask = S2MPS14_ENABLE_MASK \ } #define regulator_desc_s2mps14_buck4(num) { \ .name = "BUCK"#num, \ .id = S2MPS14_BUCK##num, \ .ops = &s2mps14_reg_ops, \ .type = REGULATOR_VOLTAGE, \ .owner = THIS_MODULE, \ .min_uV = S2MPS14_BUCK4_MIN_1400MV, \ .uV_step = S2MPS14_BUCK4_STEP_12_5MV, \ .n_voltages = S2MPS14_BUCK_N_VOLTAGES, \ .linear_min_sel = S2MPS14_BUCK4_START_SEL, \ .ramp_delay = S2MPS14_BUCK_RAMP_DELAY, \ .vsel_reg = S2MPS14_REG_B1CTRL2 + (num - 1) * 2, \ .vsel_mask = S2MPS14_BUCK_VSEL_MASK, \ .enable_reg = S2MPS14_REG_B1CTRL1 + (num - 1) * 2, \ .enable_mask = S2MPS14_ENABLE_MASK \ } static const struct regulator_desc s2mps14_regulators[] = { regulator_desc_s2mps14_ldo3(1), regulator_desc_s2mps14_ldo3(2), regulator_desc_s2mps14_ldo1(3), regulator_desc_s2mps14_ldo1(4), regulator_desc_s2mps14_ldo3(5), regulator_desc_s2mps14_ldo3(6), regulator_desc_s2mps14_ldo1(7), regulator_desc_s2mps14_ldo2(8), regulator_desc_s2mps14_ldo3(9), regulator_desc_s2mps14_ldo3(10), regulator_desc_s2mps14_ldo1(11), regulator_desc_s2mps14_ldo2(12), regulator_desc_s2mps14_ldo2(13), regulator_desc_s2mps14_ldo2(14), regulator_desc_s2mps14_ldo2(15), regulator_desc_s2mps14_ldo2(16), regulator_desc_s2mps14_ldo2(17), regulator_desc_s2mps14_ldo2(18), regulator_desc_s2mps14_ldo1(19), regulator_desc_s2mps14_ldo1(20), regulator_desc_s2mps14_ldo1(21), regulator_desc_s2mps14_ldo3(22), regulator_desc_s2mps14_ldo1(23), regulator_desc_s2mps14_ldo2(24), regulator_desc_s2mps14_ldo2(25), regulator_desc_s2mps14_buck1235(1), regulator_desc_s2mps14_buck1235(2), regulator_desc_s2mps14_buck1235(3), regulator_desc_s2mps14_buck4(4), regulator_desc_s2mps14_buck1235(5), }; #ifdef CONFIG_OF static int s2mps11_pmic_dt_parse_pdata(struct platform_device *pdev, struct sec_platform_data *pdata) { struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent); struct device_node *pmic_np, *regulators_np, *reg_np; struct sec_regulator_data *rdata; struct sec_opmode_data *rmode; const struct regulator_desc *regulators; int i, num_regulators; switch(iodev->device_type) { case S2MPS11X: regulators = s2mps11_regulators; num_regulators = ARRAY_SIZE(s2mps11_regulators); break; case S2MPS14X: regulators = s2mps14_regulators; num_regulators = ARRAY_SIZE(s2mps14_regulators); break; default: dev_err(&pdev->dev, "Invalid device type: %u\n", iodev->device_type); return -EINVAL; }; pmic_np = iodev->dev->of_node; if (!pmic_np) { dev_err(iodev->dev, "couldn't find pmic sub-node\n"); return -ENODEV; } regulators_np = of_find_node_by_name(pmic_np, "regulators"); if (!regulators_np) { dev_err(iodev->dev, "couldn't find regulators sub-node\n"); return -EINVAL; } pdata->num_regulators = of_get_child_count(regulators_np); rdata = devm_kzalloc(&pdev->dev, sizeof(*rdata) * pdata->num_regulators, GFP_KERNEL); if (!rdata) { dev_err(iodev->dev, "couldn't allocate memory for rdata\n"); return -ENOMEM; } rmode = devm_kzalloc(&pdev->dev, sizeof(*rmode) * pdata->num_regulators, GFP_KERNEL); if (!rmode) { dev_err(iodev->dev, "couldn't allocate memory for opmode\n"); return -ENOMEM; } pdata->regulators = rdata; pdata->opmode = rmode; for_each_child_of_node(regulators_np, reg_np) { for (i = 0; i < num_regulators; i++) if (!of_node_cmp(reg_np->name, regulators[i].name)) break; if (i == num_regulators) { dev_warn(iodev->dev, "don't know how to configure regulator %s\n", reg_np->name); continue; } rdata->id = i; rdata->initdata = of_get_regulator_init_data(&pdev->dev, reg_np); rdata->reg_node = reg_np; rdata++; rmode->id = i; if (of_property_read_u32(reg_np, "op_mode", &rmode->mode)) { dev_warn(iodev->dev, "no op_mode property property at %s\n", reg_np->full_name); rmode->mode = S2MPS14_REGULATOR_OPMODE_ON; } else if (rmode->mode >= S2MPS14_REGULATOR_OPMODE_MAX) { dev_warn(iodev->dev, "wrong op_mode value at %s\n", reg_np->full_name); rmode->mode = S2MPS14_REGULATOR_OPMODE_ON; } rmode++; } return 0; } #else static int s2mps11_pmic_dt_parse_pdata(struct platform_device *pdev, struct sec_platform_data *pdata) { return 0; } #endif /* CONFIG_OF */ static int s2mps11_pmic_probe(struct platform_device *pdev) { struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent); struct sec_platform_data *pdata = iodev->pdata; struct regulator_config config = { }; struct s2mps11_info *s2mps11; int i, ret; unsigned char ramp_enable, ramp_reg = 0; const struct regulator_desc *regulators; enum sec_device_type dev_type; if (!pdata) { dev_err(pdev->dev.parent, "Platform data not supplied\n"); return -ENODEV; } if (iodev->dev->of_node) { ret = s2mps11_pmic_dt_parse_pdata(pdev, pdata); if (ret) return ret; } s2mps11 = devm_kzalloc(&pdev->dev, sizeof(struct s2mps11_info), GFP_KERNEL); if (!s2mps11) return -ENOMEM; dev_type = platform_get_device_id(pdev)->driver_data; switch(dev_type) { case S2MPS11X: regulators = s2mps11_regulators; break; case S2MPS14X: regulators = s2mps14_regulators; break; default: dev_err(&pdev->dev, "Invalid device type: %u\n", dev_type); return -EINVAL; }; s2mps11->rdev_num = pdata->num_regulators; s2mps11->rdev = devm_kzalloc(&pdev->dev, sizeof(*s2mps11->rdev)*s2mps11->rdev_num, GFP_KERNEL); if (!s2mps11->rdev) return -ENOMEM; platform_set_drvdata(pdev, s2mps11); s2mps11->ramp_delay2 = pdata->buck2_ramp_delay; s2mps11->ramp_delay34 = pdata->buck34_ramp_delay; s2mps11->ramp_delay5 = pdata->buck5_ramp_delay; s2mps11->ramp_delay16 = pdata->buck16_ramp_delay; s2mps11->ramp_delay7810 = pdata->buck7810_ramp_delay; s2mps11->ramp_delay9 = pdata->buck9_ramp_delay; s2mps11->buck6_ramp = pdata->buck6_ramp_enable; s2mps11->buck2_ramp = pdata->buck2_ramp_enable; s2mps11->buck3_ramp = pdata->buck3_ramp_enable; s2mps11->buck4_ramp = pdata->buck4_ramp_enable; s2mps11->opmode = pdata->opmode; ramp_enable = (s2mps11->buck2_ramp << 3) | (s2mps11->buck3_ramp << 2) | (s2mps11->buck4_ramp << 1) | s2mps11->buck6_ramp ; if (ramp_enable) { if (s2mps11->buck2_ramp) ramp_reg |= get_ramp_delay(s2mps11->ramp_delay2) << 6; if (s2mps11->buck3_ramp || s2mps11->buck4_ramp) ramp_reg |= get_ramp_delay(s2mps11->ramp_delay34) << 4; sec_reg_write(iodev->regmap_pmic, S2MPS11_REG_RAMP, ramp_reg | ramp_enable); } if (dev_type == S2MPS11X) { ramp_reg &= 0x00; ramp_reg |= get_ramp_delay(s2mps11->ramp_delay5) << 6; ramp_reg |= get_ramp_delay(s2mps11->ramp_delay16) << 4; ramp_reg |= get_ramp_delay(s2mps11->ramp_delay7810) << 2; ramp_reg |= get_ramp_delay(s2mps11->ramp_delay9); sec_reg_write(iodev->regmap_pmic, S2MPS11_REG_RAMP_BUCK, ramp_reg); } for (i = 0; i < s2mps11->rdev_num; i++) { int id = pdata->regulators[i].id; config.dev = &pdev->dev; config.regmap = iodev->regmap_pmic; config.init_data = pdata->regulators[i].initdata; config.driver_data = s2mps11; config.of_node = pdata->regulators[i].reg_node; s2mps11->rdev[i] = regulator_register(®ulators[id], &config); if (IS_ERR(s2mps11->rdev[i])) { ret = PTR_ERR(s2mps11->rdev[i]); dev_err(&pdev->dev, "regulator init failed for %d\n", i); s2mps11->rdev[i] = NULL; goto err; } } return 0; err: for (i = 0; i < s2mps11->rdev_num; i++) regulator_unregister(s2mps11->rdev[i]); return ret; } static int s2mps11_pmic_remove(struct platform_device *pdev) { struct s2mps11_info *s2mps11 = platform_get_drvdata(pdev); int i; for (i = 0; i < s2mps11->rdev_num; i++) regulator_unregister(s2mps11->rdev[i]); return 0; } static const struct platform_device_id s2mps11_pmic_id[] = { { "s2mps11-pmic", S2MPS11X}, { "s2mps14-pmic", S2MPS14X}, { }, }; MODULE_DEVICE_TABLE(platform, s2mps11_pmic_id); static struct platform_driver s2mps11_pmic_driver = { .driver = { .name = "s2mps11-pmic", .owner = THIS_MODULE, }, .probe = s2mps11_pmic_probe, .remove = s2mps11_pmic_remove, .id_table = s2mps11_pmic_id, }; static int __init s2mps11_pmic_init(void) { return platform_driver_register(&s2mps11_pmic_driver); } subsys_initcall(s2mps11_pmic_init); static void __exit s2mps11_pmic_exit(void) { platform_driver_unregister(&s2mps11_pmic_driver); } module_exit(s2mps11_pmic_exit); /* Module information */ MODULE_AUTHOR("Sangbeom Kim "); MODULE_DESCRIPTION("SAMSUNG S2MPS11/S2MPS14 Regulator Driver"); MODULE_LICENSE("GPL");