/* * s5m8767.c * * Copyright (c) 2011 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. * */ #include #include #include #include #include #include #include #include #include #include #include struct s5m8767_info { struct device *dev; struct s5m87xx_dev *iodev; int num_regulators; struct regulator_dev **rdev; int ramp_delay; bool buck2_ramp; bool buck3_ramp; bool buck4_ramp; bool buck2_gpiodvs; bool buck3_gpiodvs; bool buck4_gpiodvs; u8 buck2_vol[8]; u8 buck3_vol[8]; u8 buck4_vol[8]; int buck_gpios[3]; int buck_gpioindex; }; struct s5m_voltage_desc { int max; int min; int step; }; static const struct s5m_voltage_desc buck_voltage_val1 = { .max = 2225000, .min = 650000, .step = 6250, }; static const struct s5m_voltage_desc buck_voltage_val2 = { .max = 1600000, .min = 600000, .step = 6250, }; static const struct s5m_voltage_desc buck_voltage_val3 = { .max = 3000000, .min = 750000, .step = 12500, }; static const struct s5m_voltage_desc ldo_voltage_val1 = { .max = 3950000, .min = 800000, .step = 50000, }; static const struct s5m_voltage_desc ldo_voltage_val2 = { .max = 2375000, .min = 800000, .step = 25000, }; static const struct s5m_voltage_desc *reg_voltage_map[] = { [S5M8767_LDO1] = &ldo_voltage_val2, [S5M8767_LDO2] = &ldo_voltage_val2, [S5M8767_LDO3] = &ldo_voltage_val1, [S5M8767_LDO4] = &ldo_voltage_val1, [S5M8767_LDO5] = &ldo_voltage_val1, [S5M8767_LDO6] = &ldo_voltage_val2, [S5M8767_LDO7] = &ldo_voltage_val2, [S5M8767_LDO8] = &ldo_voltage_val2, [S5M8767_LDO9] = &ldo_voltage_val1, [S5M8767_LDO10] = &ldo_voltage_val1, [S5M8767_LDO11] = &ldo_voltage_val1, [S5M8767_LDO12] = &ldo_voltage_val1, [S5M8767_LDO13] = &ldo_voltage_val1, [S5M8767_LDO14] = &ldo_voltage_val1, [S5M8767_LDO15] = &ldo_voltage_val2, [S5M8767_LDO16] = &ldo_voltage_val1, [S5M8767_LDO17] = &ldo_voltage_val1, [S5M8767_LDO18] = &ldo_voltage_val1, [S5M8767_LDO19] = &ldo_voltage_val1, [S5M8767_LDO20] = &ldo_voltage_val1, [S5M8767_LDO21] = &ldo_voltage_val1, [S5M8767_LDO22] = &ldo_voltage_val1, [S5M8767_LDO23] = &ldo_voltage_val1, [S5M8767_LDO24] = &ldo_voltage_val1, [S5M8767_LDO25] = &ldo_voltage_val1, [S5M8767_LDO26] = &ldo_voltage_val1, [S5M8767_LDO27] = &ldo_voltage_val1, [S5M8767_LDO28] = &ldo_voltage_val1, [S5M8767_BUCK1] = &buck_voltage_val1, [S5M8767_BUCK2] = &buck_voltage_val2, [S5M8767_BUCK3] = &buck_voltage_val2, [S5M8767_BUCK4] = &buck_voltage_val2, [S5M8767_BUCK5] = &buck_voltage_val1, [S5M8767_BUCK6] = &buck_voltage_val1, [S5M8767_BUCK7] = NULL, [S5M8767_BUCK8] = NULL, [S5M8767_BUCK9] = &buck_voltage_val3, }; static int s5m8767_list_voltage(struct regulator_dev *rdev, unsigned int selector) { const struct s5m_voltage_desc *desc; int reg_id = rdev_get_id(rdev); int val; if (reg_id >= ARRAY_SIZE(reg_voltage_map) || reg_id < 0) return -EINVAL; desc = reg_voltage_map[reg_id]; if (desc == NULL) return -EINVAL; val = desc->min + desc->step * selector; if (val > desc->max) return -EINVAL; return val; } static int s5m8767_get_register(struct regulator_dev *rdev, int *reg) { int reg_id = rdev_get_id(rdev); switch (reg_id) { case S5M8767_LDO1 ... S5M8767_LDO2: *reg = S5M8767_REG_LDO1CTRL + (reg_id - S5M8767_LDO1); break; case S5M8767_LDO3 ... S5M8767_LDO28: *reg = S5M8767_REG_LDO3CTRL + (reg_id - S5M8767_LDO3); break; case S5M8767_BUCK1: *reg = S5M8767_REG_BUCK1CTRL1; break; case S5M8767_BUCK2 ... S5M8767_BUCK4: *reg = S5M8767_REG_BUCK2CTRL + (reg_id - S5M8767_BUCK2) * 9; break; case S5M8767_BUCK5: *reg = S5M8767_REG_BUCK5CTRL1; break; case S5M8767_BUCK6 ... S5M8767_BUCK9: *reg = S5M8767_REG_BUCK6CTRL1 + (reg_id - S5M8767_BUCK6) * 2; break; default: return -EINVAL; } return 0; } static int s5m8767_reg_is_enabled(struct regulator_dev *rdev) { struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev); int ret, reg; int mask = 0xc0, pattern = 0xc0; u8 val; ret = s5m8767_get_register(rdev, ®); if (ret == -EINVAL) return 1; else if (ret) return ret; ret = s5m_reg_read(s5m8767->iodev, reg, &val); if (ret) return ret; return (val & mask) == pattern; } static int s5m8767_reg_enable(struct regulator_dev *rdev) { struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev); int ret, reg; int mask = 0xc0, pattern = 0xc0; ret = s5m8767_get_register(rdev, ®); if (ret) return ret; return s5m_reg_update(s5m8767->iodev, reg, pattern, mask); } static int s5m8767_reg_disable(struct regulator_dev *rdev) { struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev); int ret, reg; int mask = 0xc0, pattern = 0xc0; ret = s5m8767_get_register(rdev, ®); if (ret) return ret; return s5m_reg_update(s5m8767->iodev, reg, ~pattern, mask); } static int s5m8767_get_voltage_register(struct regulator_dev *rdev, int *_reg) { int reg_id = rdev_get_id(rdev); int reg; switch (reg_id) { case S5M8767_LDO1 ... S5M8767_LDO2: reg = S5M8767_REG_LDO1CTRL + (reg_id - S5M8767_LDO1); break; case S5M8767_LDO3 ... S5M8767_LDO28: reg = S5M8767_REG_LDO3CTRL + (reg_id - S5M8767_LDO3); break; case S5M8767_BUCK1: reg = S5M8767_REG_BUCK1CTRL2; break; case S5M8767_BUCK2: reg = S5M8767_REG_BUCK2DVS1; break; case S5M8767_BUCK3: reg = S5M8767_REG_BUCK3DVS1; break; case S5M8767_BUCK4: reg = S5M8767_REG_BUCK4DVS1; break; case S5M8767_BUCK5: reg = S5M8767_REG_BUCK5CTRL2; break; case S5M8767_BUCK6 ... S5M8767_BUCK9: reg = S5M8767_REG_BUCK6CTRL2 + (reg_id - S5M8767_BUCK6) * 2; break; default: return -EINVAL; } *_reg = reg; return 0; } static int s5m8767_get_voltage_sel(struct regulator_dev *rdev) { struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev); int reg, mask = 0xff, ret; int reg_id = rdev_get_id(rdev); u8 val; ret = s5m8767_get_voltage_register(rdev, ®); if (ret) return ret; switch (reg_id) { case S5M8767_LDO1 ... S5M8767_LDO28: mask = 0x3f; break; case S5M8767_BUCK2: if (s5m8767->buck2_gpiodvs) reg += s5m8767->buck_gpioindex; break; case S5M8767_BUCK3: if (s5m8767->buck3_gpiodvs) reg += s5m8767->buck_gpioindex; break; case S5M8767_BUCK4: if (s5m8767->buck4_gpiodvs) reg += s5m8767->buck_gpioindex; break; } ret = s5m_reg_read(s5m8767->iodev, reg, &val); if (ret) return ret; val &= mask; return val; } static inline int s5m8767_convert_voltage( const struct s5m_voltage_desc *desc, int min_vol, int max_vol) { int out_vol = 0; if (desc == NULL) return -EINVAL; if (max_vol < desc->min || min_vol > desc->max) return -EINVAL; out_vol = (min_vol - desc->min) / desc->step; if (desc->min + desc->step * out_vol > max_vol) return -EINVAL; return out_vol; } static int s5m8767_set_voltage(struct regulator_dev *rdev, int min_uV, int max_uV, unsigned *selector) { struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev); int min_vol = min_uV, max_vol = max_uV; const struct s5m_voltage_desc *desc; int reg_id = rdev_get_id(rdev); int reg, mask, ret; int i; u8 val; switch (reg_id) { case S5M8767_LDO1 ... S5M8767_LDO28: mask = 0x3f; break; case S5M8767_BUCK1 ... S5M8767_BUCK6: mask = 0xff; break; case S5M8767_BUCK7 ... S5M8767_BUCK8: return -EINVAL; case S5M8767_BUCK9: mask = 0xff; break; default: return -EINVAL; } desc = reg_voltage_map[reg_id]; i = s5m8767_convert_voltage(desc, min_vol, max_vol); if (i < 0) return i; ret = s5m8767_get_voltage_register(rdev, ®); if (ret) return ret; s5m_reg_read(s5m8767->iodev, reg, &val); val = val & mask; ret = s5m_reg_write(s5m8767->iodev, reg, val); *selector = i; return ret; } static inline void s5m8767_set_high(struct s5m8767_info *s5m8767) { int temp_index = s5m8767->buck_gpioindex; gpio_set_value(s5m8767->buck_gpios[0], (temp_index >> 2) & 0x1); gpio_set_value(s5m8767->buck_gpios[1], (temp_index >> 1) & 0x1); gpio_set_value(s5m8767->buck_gpios[2], temp_index & 0x1); } static inline void s5m8767_set_low(struct s5m8767_info *s5m8767) { int temp_index = s5m8767->buck_gpioindex; gpio_set_value(s5m8767->buck_gpios[2], temp_index & 0x1); gpio_set_value(s5m8767->buck_gpios[1], (temp_index >> 1) & 0x1); gpio_set_value(s5m8767->buck_gpios[0], (temp_index >> 2) & 0x1); } static int s5m8767_set_voltage_buck(struct regulator_dev *rdev, int min_uV, int max_uV, unsigned *selector) { struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev); int reg_id = rdev_get_id(rdev); const struct s5m_voltage_desc *desc; int new_val, old_val, i = 0; int min_vol = min_uV, max_vol = max_uV; if (reg_id < S5M8767_BUCK1 || reg_id > S5M8767_BUCK6) return -EINVAL; switch (reg_id) { case S5M8767_BUCK1: return s5m8767_set_voltage(rdev, min_uV, max_uV, selector); case S5M8767_BUCK2 ... S5M8767_BUCK4: break; case S5M8767_BUCK5 ... S5M8767_BUCK6: return s5m8767_set_voltage(rdev, min_uV, max_uV, selector); case S5M8767_BUCK9: return s5m8767_set_voltage(rdev, min_uV, max_uV, selector); } desc = reg_voltage_map[reg_id]; new_val = s5m8767_convert_voltage(desc, min_vol, max_vol); if (new_val < 0) return new_val; switch (reg_id) { case S5M8767_BUCK2: if (s5m8767->buck2_gpiodvs) { while (s5m8767->buck2_vol[i] != new_val) i++; } else return s5m8767_set_voltage(rdev, min_uV, max_uV, selector); break; case S5M8767_BUCK3: if (s5m8767->buck3_gpiodvs) { while (s5m8767->buck3_vol[i] != new_val) i++; } else return s5m8767_set_voltage(rdev, min_uV, max_uV, selector); break; case S5M8767_BUCK4: if (s5m8767->buck3_gpiodvs) { while (s5m8767->buck4_vol[i] != new_val) i++; } else return s5m8767_set_voltage(rdev, min_uV, max_uV, selector); break; } old_val = s5m8767->buck_gpioindex; s5m8767->buck_gpioindex = i; if (i > old_val) s5m8767_set_high(s5m8767); else s5m8767_set_low(s5m8767); *selector = new_val; return 0; } static int s5m8767_set_voltage_time_sel(struct regulator_dev *rdev, unsigned int old_sel, unsigned int new_sel) { struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev); const struct s5m_voltage_desc *desc; int reg_id = rdev_get_id(rdev); desc = reg_voltage_map[reg_id]; if (old_sel < new_sel) return DIV_ROUND_UP(desc->step * (new_sel - old_sel), s5m8767->ramp_delay); return 0; } static struct regulator_ops s5m8767_ldo_ops = { .list_voltage = s5m8767_list_voltage, .is_enabled = s5m8767_reg_is_enabled, .enable = s5m8767_reg_enable, .disable = s5m8767_reg_disable, .get_voltage_sel = s5m8767_get_voltage_sel, .set_voltage = s5m8767_set_voltage, .set_voltage_time_sel = s5m8767_set_voltage_time_sel, }; static struct regulator_ops s5m8767_buck_ops = { .list_voltage = s5m8767_list_voltage, .is_enabled = s5m8767_reg_is_enabled, .enable = s5m8767_reg_enable, .disable = s5m8767_reg_disable, .get_voltage_sel = s5m8767_get_voltage_sel, .set_voltage = s5m8767_set_voltage_buck, .set_voltage_time_sel = s5m8767_set_voltage_time_sel, }; #define regulator_desc_ldo(num) { \ .name = "LDO"#num, \ .id = S5M8767_LDO##num, \ .ops = &s5m8767_ldo_ops, \ .type = REGULATOR_VOLTAGE, \ .owner = THIS_MODULE, \ } #define regulator_desc_buck(num) { \ .name = "BUCK"#num, \ .id = S5M8767_BUCK##num, \ .ops = &s5m8767_buck_ops, \ .type = REGULATOR_VOLTAGE, \ .owner = THIS_MODULE, \ } static struct regulator_desc regulators[] = { regulator_desc_ldo(1), regulator_desc_ldo(2), regulator_desc_ldo(3), regulator_desc_ldo(4), regulator_desc_ldo(5), regulator_desc_ldo(6), regulator_desc_ldo(7), regulator_desc_ldo(8), regulator_desc_ldo(9), regulator_desc_ldo(10), regulator_desc_ldo(11), regulator_desc_ldo(12), regulator_desc_ldo(13), regulator_desc_ldo(14), regulator_desc_ldo(15), regulator_desc_ldo(16), regulator_desc_ldo(17), regulator_desc_ldo(18), regulator_desc_ldo(19), regulator_desc_ldo(20), regulator_desc_ldo(21), regulator_desc_ldo(22), regulator_desc_ldo(23), regulator_desc_ldo(24), regulator_desc_ldo(25), regulator_desc_ldo(26), regulator_desc_ldo(27), regulator_desc_ldo(28), regulator_desc_buck(1), regulator_desc_buck(2), regulator_desc_buck(3), regulator_desc_buck(4), regulator_desc_buck(5), regulator_desc_buck(6), regulator_desc_buck(7), regulator_desc_buck(8), regulator_desc_buck(9), }; static __devinit int s5m8767_pmic_probe(struct platform_device *pdev) { struct s5m87xx_dev *iodev = dev_get_drvdata(pdev->dev.parent); struct s5m_platform_data *pdata = dev_get_platdata(iodev->dev); struct regulator_dev **rdev; struct s5m8767_info *s5m8767; struct i2c_client *i2c; int i, ret, size; if (!pdata) { dev_err(pdev->dev.parent, "Platform data not supplied\n"); return -ENODEV; } s5m8767 = devm_kzalloc(&pdev->dev, sizeof(struct s5m8767_info), GFP_KERNEL); if (!s5m8767) return -ENOMEM; size = sizeof(struct regulator_dev *) * (S5M8767_REG_MAX - 2); s5m8767->rdev = devm_kzalloc(&pdev->dev, size, GFP_KERNEL); if (!s5m8767->rdev) return -ENOMEM; rdev = s5m8767->rdev; s5m8767->dev = &pdev->dev; s5m8767->iodev = iodev; s5m8767->num_regulators = S5M8767_REG_MAX - 2; platform_set_drvdata(pdev, s5m8767); i2c = s5m8767->iodev->i2c; s5m8767->buck_gpioindex = pdata->buck_default_idx; s5m8767->buck2_gpiodvs = pdata->buck2_gpiodvs; s5m8767->buck3_gpiodvs = pdata->buck3_gpiodvs; s5m8767->buck4_gpiodvs = pdata->buck4_gpiodvs; s5m8767->buck_gpios[0] = pdata->buck_gpios[0]; s5m8767->buck_gpios[1] = pdata->buck_gpios[1]; s5m8767->buck_gpios[2] = pdata->buck_gpios[2]; s5m8767->ramp_delay = pdata->buck_ramp_delay; s5m8767->buck2_ramp = pdata->buck2_ramp_enable; s5m8767->buck3_ramp = pdata->buck3_ramp_enable; s5m8767->buck4_ramp = pdata->buck4_ramp_enable; for (i = 0; i < 8; i++) { if (s5m8767->buck2_gpiodvs) { s5m8767->buck2_vol[i] = s5m8767_convert_voltage( &buck_voltage_val2, pdata->buck2_voltage[i], pdata->buck2_voltage[i] + buck_voltage_val2.step); } if (s5m8767->buck3_gpiodvs) { s5m8767->buck3_vol[i] = s5m8767_convert_voltage( &buck_voltage_val2, pdata->buck3_voltage[i], pdata->buck3_voltage[i] + buck_voltage_val2.step); } if (s5m8767->buck4_gpiodvs) { s5m8767->buck4_vol[i] = s5m8767_convert_voltage( &buck_voltage_val2, pdata->buck4_voltage[i], pdata->buck4_voltage[i] + buck_voltage_val2.step); } } if (pdata->buck2_gpiodvs || pdata->buck3_gpiodvs || pdata->buck4_gpiodvs) { if (gpio_is_valid(pdata->buck_gpios[0]) && gpio_is_valid(pdata->buck_gpios[1]) && gpio_is_valid(pdata->buck_gpios[2])) { ret = gpio_request(pdata->buck_gpios[0], "S5M8767 SET1"); if (ret == -EBUSY) dev_warn(&pdev->dev, "Duplicated gpio request for SET1\n"); ret = gpio_request(pdata->buck_gpios[1], "S5M8767 SET2"); if (ret == -EBUSY) dev_warn(&pdev->dev, "Duplicated gpio request for SET2\n"); ret = gpio_request(pdata->buck_gpios[2], "S5M8767 SET3"); if (ret == -EBUSY) dev_warn(&pdev->dev, "Duplicated gpio request for SET3\n"); /* SET1 GPIO */ gpio_direction_output(pdata->buck_gpios[0], (s5m8767->buck_gpioindex >> 2) & 0x1); /* SET2 GPIO */ gpio_direction_output(pdata->buck_gpios[1], (s5m8767->buck_gpioindex >> 1) & 0x1); /* SET3 GPIO */ gpio_direction_output(pdata->buck_gpios[2], (s5m8767->buck_gpioindex >> 0) & 0x1); ret = 0; } else { dev_err(&pdev->dev, "GPIO NOT VALID\n"); ret = -EINVAL; return ret; } } if (pdata->buck2_gpiodvs) { if (pdata->buck3_gpiodvs || pdata->buck4_gpiodvs) { dev_err(&pdev->dev, "S5M8767 GPIO DVS NOT VALID\n"); ret = -EINVAL; return ret; } } if (pdata->buck3_gpiodvs) { if (pdata->buck2_gpiodvs || pdata->buck4_gpiodvs) { dev_err(&pdev->dev, "S5M8767 GPIO DVS NOT VALID\n"); ret = -EINVAL; return ret; } } if (pdata->buck4_gpiodvs) { if (pdata->buck2_gpiodvs || pdata->buck3_gpiodvs) { dev_err(&pdev->dev, "S5M8767 GPIO DVS NOT VALID\n"); ret = -EINVAL; return ret; } } s5m_reg_update(s5m8767->iodev, S5M8767_REG_BUCK2CTRL, (pdata->buck2_gpiodvs) ? (1 << 1) : (0 << 1), 1 << 1); s5m_reg_update(s5m8767->iodev, S5M8767_REG_BUCK3CTRL, (pdata->buck3_gpiodvs) ? (1 << 1) : (0 << 1), 1 << 1); s5m_reg_update(s5m8767->iodev, S5M8767_REG_BUCK4CTRL, (pdata->buck4_gpiodvs) ? (1 << 1) : (0 << 1), 1 << 1); /* Initialize GPIO DVS registers */ for (i = 0; i < 8; i++) { if (s5m8767->buck2_gpiodvs) { s5m_reg_write(s5m8767->iodev, S5M8767_REG_BUCK2DVS1 + i, s5m8767->buck2_vol[i]); } if (s5m8767->buck3_gpiodvs) { s5m_reg_write(s5m8767->iodev, S5M8767_REG_BUCK3DVS1 + i, s5m8767->buck3_vol[i]); } if (s5m8767->buck4_gpiodvs) { s5m_reg_write(s5m8767->iodev, S5M8767_REG_BUCK4DVS1 + i, s5m8767->buck4_vol[i]); } } s5m_reg_update(s5m8767->iodev, S5M8767_REG_BUCK2CTRL, 0x78, 0xff); s5m_reg_update(s5m8767->iodev, S5M8767_REG_BUCK3CTRL, 0x58, 0xff); s5m_reg_update(s5m8767->iodev, S5M8767_REG_BUCK4CTRL, 0x78, 0xff); if (s5m8767->buck2_ramp) s5m_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP, 0x08, 0x08); if (s5m8767->buck3_ramp) s5m_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP, 0x04, 0x04); if (s5m8767->buck4_ramp) s5m_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP, 0x02, 0x02); if (s5m8767->buck2_ramp || s5m8767->buck3_ramp || s5m8767->buck4_ramp) { switch (s5m8767->ramp_delay) { case 15: s5m_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP, 0xc0, 0xf0); break; case 25: s5m_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP, 0xd0, 0xf0); break; case 50: s5m_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP, 0xe0, 0xf0); break; case 100: s5m_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP, 0xf0, 0xf0); break; default: s5m_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP, 0x90, 0xf0); } } for (i = 0; i < pdata->num_regulators; i++) { const struct s5m_voltage_desc *desc; int id = pdata->regulators[i].id; desc = reg_voltage_map[id]; if (desc) regulators[id].n_voltages = (desc->max - desc->min) / desc->step + 1; rdev[i] = regulator_register(®ulators[id], s5m8767->dev, pdata->regulators[i].initdata, s5m8767, NULL); if (IS_ERR(rdev[i])) { ret = PTR_ERR(rdev[i]); dev_err(s5m8767->dev, "regulator init failed for %d\n", id); rdev[i] = NULL; goto err; } } return 0; err: for (i = 0; i < s5m8767->num_regulators; i++) if (rdev[i]) regulator_unregister(rdev[i]); return ret; } static int __devexit s5m8767_pmic_remove(struct platform_device *pdev) { struct s5m8767_info *s5m8767 = platform_get_drvdata(pdev); struct regulator_dev **rdev = s5m8767->rdev; int i; for (i = 0; i < s5m8767->num_regulators; i++) if (rdev[i]) regulator_unregister(rdev[i]); return 0; } static const struct platform_device_id s5m8767_pmic_id[] = { { "s5m8767-pmic", 0}, { }, }; MODULE_DEVICE_TABLE(platform, s5m8767_pmic_id); static struct platform_driver s5m8767_pmic_driver = { .driver = { .name = "s5m8767-pmic", .owner = THIS_MODULE, }, .probe = s5m8767_pmic_probe, .remove = __devexit_p(s5m8767_pmic_remove), .id_table = s5m8767_pmic_id, }; static int __init s5m8767_pmic_init(void) { return platform_driver_register(&s5m8767_pmic_driver); } subsys_initcall(s5m8767_pmic_init); static void __exit s5m8767_pmic_exit(void) { platform_driver_unregister(&s5m8767_pmic_driver); } module_exit(s5m8767_pmic_exit); /* Module information */ MODULE_AUTHOR("Sangbeom Kim "); MODULE_DESCRIPTION("SAMSUNG S5M8767 Regulator Driver"); MODULE_LICENSE("GPL");