/* * s2mpu05.c * * Copyright (c) 2015 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 #include #include #include #include static struct s2mpu05_info *static_info; struct s2mpu05_info { struct regulator_dev *rdev[S2MPU05_REGULATOR_MAX]; unsigned int opmode[S2MPU05_REGULATOR_MAX]; int num_regulators; struct sec_pmic_dev *iodev; bool g3d_en; const char *g3d_en_addr; const char *g3d_en_pin; }; /* Some LDOs supports [LPM/Normal]ON mode during suspend state */ static int s2m_set_mode(struct regulator_dev *rdev, unsigned int mode) { struct s2mpu05_info *s2mpu05 = rdev_get_drvdata(rdev); unsigned int val; int ret, id = rdev_get_id(rdev); switch (mode) { case SEC_OPMODE_SUSPEND: /* ON in Standby Mode */ val = 0x1 << S2MPU05_ENABLE_SHIFT; break; case SEC_OPMODE_MIF: /* ON in MIF Mode */ val = 0x2 << S2MPU05_ENABLE_SHIFT; break; case SEC_OPMODE_ON: /* ON in Normal Mode */ val = 0x3 << S2MPU05_ENABLE_SHIFT; break; default: pr_warn("%s: regulator_suspend_mode : 0x%x not supported\n", rdev->desc->name, mode); return -EINVAL; } ret = sec_reg_update(s2mpu05->iodev, rdev->desc->enable_reg, val, rdev->desc->enable_mask); if (ret) return ret; s2mpu05->opmode[id] = val; return 0; } static int s2m_enable(struct regulator_dev *rdev) { struct s2mpu05_info *s2mpu05 = rdev_get_drvdata(rdev); return sec_reg_update(s2mpu05->iodev, rdev->desc->enable_reg, s2mpu05->opmode[rdev_get_id(rdev)], rdev->desc->enable_mask); } static int s2m_disable_regmap(struct regulator_dev *rdev) { struct s2mpu05_info *s2mpu05 = rdev_get_drvdata(rdev); unsigned int val; if (rdev->desc->enable_is_inverted) val = rdev->desc->enable_mask; else val = 0; return sec_reg_update(s2mpu05->iodev, rdev->desc->enable_reg, val, rdev->desc->enable_mask); } static int s2m_is_enabled_regmap(struct regulator_dev *rdev) { struct s2mpu05_info *s2mpu05 = rdev_get_drvdata(rdev); int ret; unsigned int val; ret = sec_reg_read(s2mpu05->iodev, rdev->desc->enable_reg, &val); if (ret) return ret; if (rdev->desc->enable_is_inverted) return (val & rdev->desc->enable_mask) == 0; else return (val & rdev->desc->enable_mask) != 0; } 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 int s2m_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay) { struct s2mpu05_info *s2mpu05 = rdev_get_drvdata(rdev); int ramp_shift, reg_id = rdev_get_id(rdev); int ramp_mask = 0x03; unsigned int ramp_value = 0; ramp_value = get_ramp_delay(ramp_delay/1000); if (ramp_value > 4) { pr_warn("%s: ramp_delay: %d not supported\n", rdev->desc->name, ramp_delay); } switch (reg_id) { case S2MPU05_BUCK1: case S2MPU05_BUCK2: ramp_shift = 6; break; case S2MPU05_BUCK3: case S2MPU05_BUCK4: ramp_shift = 4; break; case S2MPU05_BUCK5: ramp_shift = 2; break; default: return -EINVAL; } return sec_reg_update(s2mpu05->iodev, S2MPU05_REG_BUCK_RAMP, ramp_value << ramp_shift, ramp_mask << ramp_shift); } static int s2m_get_voltage_sel_regmap(struct regulator_dev *rdev) { struct s2mpu05_info *s2mpu05 = rdev_get_drvdata(rdev); int ret; unsigned int val; ret = sec_reg_read(s2mpu05->iodev, rdev->desc->vsel_reg, &val); if (ret) return ret; val &= rdev->desc->vsel_mask; return val; } static int s2m_set_voltage_sel_regmap(struct regulator_dev *rdev, unsigned sel) { struct s2mpu05_info *s2mpu05 = rdev_get_drvdata(rdev); int reg_id = rdev_get_id(rdev); int ret; char name[16]; unsigned int voltage; /* voltage information logging to snapshot feature */ snprintf(name, sizeof(name), "LDO%d", (reg_id - S2MPU05_LDO1) + 1); voltage = ((sel & rdev->desc->vsel_mask) * S2MPU05_LDO_STEP2) + S2MPU05_LDO_MIN1; exynos_ss_regulator(name, rdev->desc->vsel_reg, voltage, ESS_FLAG_IN); ret = sec_reg_update(s2mpu05->iodev, rdev->desc->vsel_reg, sel, rdev->desc->vsel_mask); if (ret < 0) goto out; if (rdev->desc->apply_bit) ret = sec_reg_update(s2mpu05->iodev, rdev->desc->apply_reg, rdev->desc->apply_bit, rdev->desc->apply_bit); exynos_ss_regulator(name, rdev->desc->vsel_reg, voltage, ESS_FLAG_OUT); return ret; out: pr_warn("%s: failed to set voltage_sel_regmap\n", rdev->desc->name); exynos_ss_regulator(name, rdev->desc->vsel_reg, voltage, ESS_FLAG_ON); return ret; } static int s2m_set_voltage_sel_regmap_buck(struct regulator_dev *rdev, unsigned sel) { int ret; struct s2mpu05_info *s2mpu05 = rdev_get_drvdata(rdev); int reg_id = rdev_get_id(rdev); unsigned int voltage; char name[16]; /* voltage information logging to snapshot feature */ snprintf(name, sizeof(name), "BUCK%d", (reg_id - S2MPU05_BUCK1) + 1); voltage = (sel * S2MPU05_BUCK_STEP1) + S2MPU05_BUCK_MIN1; exynos_ss_regulator(name, rdev->desc->vsel_reg, voltage, ESS_FLAG_IN); ret = sec_reg_write(s2mpu05->iodev, rdev->desc->vsel_reg, sel); if (ret < 0) goto out; if (rdev->desc->apply_bit) ret = sec_reg_update(s2mpu05->iodev, rdev->desc->apply_reg, rdev->desc->apply_bit, rdev->desc->apply_bit); exynos_ss_regulator(name, rdev->desc->vsel_reg, voltage, ESS_FLAG_OUT); return ret; out: pr_warn("%s: failed to set voltage_sel_regmap\n", rdev->desc->name); exynos_ss_regulator(name, rdev->desc->vsel_reg, voltage, ESS_FLAG_ON); return ret; } static int s2m_set_voltage_time_sel(struct regulator_dev *rdev, unsigned int old_selector, unsigned int new_selector) { unsigned int ramp_delay = 0; int old_volt, new_volt; if (rdev->constraints->ramp_delay) ramp_delay = rdev->constraints->ramp_delay; else if (rdev->desc->ramp_delay) ramp_delay = rdev->desc->ramp_delay; if (ramp_delay == 0) { pr_warn("%s: ramp_delay not set\n", rdev->desc->name); return -EINVAL; } /* sanity check */ if (!rdev->desc->ops->list_voltage) return -EINVAL; old_volt = rdev->desc->ops->list_voltage(rdev, old_selector); new_volt = rdev->desc->ops->list_voltage(rdev, new_selector); if (old_selector < new_selector) return DIV_ROUND_UP(new_volt - old_volt, ramp_delay); return 0; } u32 pmic_rev_get(void) { return SEC_PMIC_REV(static_info->iodev); } static struct regulator_ops s2mpu05_ldo_ops = { .list_voltage = regulator_list_voltage_linear, .map_voltage = regulator_map_voltage_linear, .is_enabled = s2m_is_enabled_regmap, .enable = s2m_enable, .disable = s2m_disable_regmap, .get_voltage_sel = s2m_get_voltage_sel_regmap, .set_voltage_sel = s2m_set_voltage_sel_regmap, .set_voltage_time_sel = s2m_set_voltage_time_sel, .set_mode = s2m_set_mode, }; static struct regulator_ops s2mpu05_buck_ops = { .list_voltage = regulator_list_voltage_linear, .map_voltage = regulator_map_voltage_linear, .is_enabled = s2m_is_enabled_regmap, .enable = s2m_enable, .disable = s2m_disable_regmap, .get_voltage_sel = s2m_get_voltage_sel_regmap, .set_voltage_sel = s2m_set_voltage_sel_regmap_buck, .set_voltage_time_sel = s2m_set_voltage_time_sel, .set_mode = s2m_set_mode, .set_ramp_delay = s2m_set_ramp_delay, }; #define _BUCK(macro) S2MPU05_BUCK##macro #define _buck_ops(num) s2mpu05_buck_ops##num #define _LDO(macro) S2MPU05_LDO##macro #define _REG(ctrl) S2MPU05_REG##ctrl #define _ldo_ops(num) s2mpu05_ldo_ops##num #define _TIME(macro) S2MPU05_ENABLE_TIME##macro #define BUCK_DESC(_name, _id, _ops, m, s, v, e, t) { \ .name = _name, \ .id = _id, \ .ops = _ops, \ .type = REGULATOR_VOLTAGE, \ .owner = THIS_MODULE, \ .min_uV = m, \ .uV_step = s, \ .n_voltages = S2MPU05_BUCK_N_VOLTAGES, \ .vsel_reg = v, \ .vsel_mask = S2MPU05_BUCK_VSEL_MASK, \ .enable_reg = e, \ .enable_mask = S2MPU05_ENABLE_MASK, \ .enable_time = t \ } #define LDO_DESC(_name, _id, _ops, m, s, v, e, t) { \ .name = _name, \ .id = _id, \ .ops = _ops, \ .type = REGULATOR_VOLTAGE, \ .owner = THIS_MODULE, \ .min_uV = m, \ .uV_step = s, \ .n_voltages = S2MPU05_LDO_N_VOLTAGES, \ .vsel_reg = v, \ .vsel_mask = S2MPU05_LDO_VSEL_MASK, \ .enable_reg = e, \ .enable_mask = S2MPU05_ENABLE_MASK, \ .enable_time = t \ } static struct regulator_desc regulators[S2MPU05_REGULATOR_MAX] = { /* name, id, ops, min_uv, uV_step, vsel_reg, enable_reg */ LDO_DESC("LDO1", _LDO(1), &_ldo_ops(), _LDO(_MIN3), _LDO(_STEP2), _REG(_L1CTRL), _REG(_L1CTRL), _TIME(_LDO)), LDO_DESC("LDO2", _LDO(2), &_ldo_ops(), _LDO(_MIN2), _LDO(_STEP2), _REG(_L2CTRL), _REG(_L2CTRL), _TIME(_LDO)), LDO_DESC("LDO3", _LDO(3), &_ldo_ops(), _LDO(_MIN1), _LDO(_STEP2), _REG(_L3CTRL), _REG(_L3CTRL), _TIME(_LDO)), LDO_DESC("LDO4", _LDO(4), &_ldo_ops(), _LDO(_MIN1), _LDO(_STEP1), _REG(_L4CTRL), _REG(_L4CTRL), _TIME(_LDO)), LDO_DESC("LDO5", _LDO(5), &_ldo_ops(), _LDO(_MIN1), _LDO(_STEP1), _REG(_L5CTRL), _REG(_L5CTRL), _TIME(_LDO)), LDO_DESC("LDO6", _LDO(6), &_ldo_ops(), _LDO(_MIN1), _LDO(_STEP1), _REG(_L6CTRL), _REG(_L6CTRL), _TIME(_LDO)), LDO_DESC("LDO7", _LDO(7), &_ldo_ops(), _LDO(_MIN1), _LDO(_STEP2), _REG(_L7CTRL), _REG(_L7CTRL), _TIME(_LDO)), LDO_DESC("LDO8", _LDO(8), &_ldo_ops(), _LDO(_MIN2), _LDO(_STEP2), _REG(_L8CTRL), _REG(_L8CTRL), _TIME(_LDO)), LDO_DESC("LDO9", _LDO(9), &_ldo_ops(), _LDO(_MIN3), _LDO(_STEP2), _REG(_L9CTRL1), _REG(_L9CTRL1), _TIME(_LDO)), LDO_DESC("LDO10", _LDO(10), &_ldo_ops(), _LDO(_MIN3), _LDO(_STEP2), _REG(_L10CTRL), _REG(_L10CTRL), _TIME(_LDO)), LDO_DESC("LDO25", _LDO(25), &_ldo_ops(), _LDO(_MIN1), _LDO(_STEP2), _REG(_L25CTRL), _REG(_L25CTRL), _TIME(_LDO)), LDO_DESC("LDO26", _LDO(26), &_ldo_ops(), _LDO(_MIN2), _LDO(_STEP2), _REG(_L26CTRL), _REG(_L26CTRL), _TIME(_LDO)), LDO_DESC("LDO27", _LDO(27), &_ldo_ops(), _LDO(_MIN1), _LDO(_STEP2), _REG(_L27CTRL), _REG(_L27CTRL), _TIME(_LDO)), LDO_DESC("LDO28", _LDO(28), &_ldo_ops(), _LDO(_MIN2), _LDO(_STEP2), _REG(_L28CTRL), _REG(_L28CTRL), _TIME(_LDO)), LDO_DESC("LDO29", _LDO(29), &_ldo_ops(), _LDO(_MIN2), _LDO(_STEP2), _REG(_L29CTRL), _REG(_L29CTRL), _TIME(_LDO)), LDO_DESC("LDO30", _LDO(30), &_ldo_ops(), _LDO(_MIN1), _LDO(_STEP2), _REG(_L30CTRL), _REG(_L30CTRL), _TIME(_LDO)), LDO_DESC("LDO31", _LDO(31), &_ldo_ops(), _LDO(_MIN2), _LDO(_STEP2), _REG(_L31CTRL), _REG(_L31CTRL), _TIME(_LDO)), LDO_DESC("LDO32", _LDO(32), &_ldo_ops(), _LDO(_MIN2), _LDO(_STEP2), _REG(_L32CTRL), _REG(_L32CTRL), _TIME(_LDO)), LDO_DESC("LDO33", _LDO(33), &_ldo_ops(), _LDO(_MIN2), _LDO(_STEP2), _REG(_L33CTRL), _REG(_L33CTRL), _TIME(_LDO)), LDO_DESC("LDO34", _LDO(34), &_ldo_ops(), _LDO(_MIN2), _LDO(_STEP2), _REG(_L34CTRL), _REG(_L34CTRL), _TIME(_LDO)), LDO_DESC("LDO35", _LDO(35), &_ldo_ops(), _LDO(_MIN2), _LDO(_STEP2), _REG(_L35CTRL), _REG(_L35CTRL), _TIME(_LDO)), BUCK_DESC("BUCK1", _BUCK(1), &_buck_ops(), _BUCK(_MIN1), _BUCK(_STEP1), _REG(_B1CTRL2), _REG(_B1CTRL1), _TIME(_BUCK1)), BUCK_DESC("BUCK2", _BUCK(2), &_buck_ops(), _BUCK(_MIN1), _BUCK(_STEP1), _REG(_B2CTRL2), _REG(_B2CTRL1), _TIME(_BUCK2)), BUCK_DESC("BUCK3", _BUCK(3), &_buck_ops(), _BUCK(_MIN1), _BUCK(_STEP1), _REG(_B3CTRL2), _REG(_B3CTRL1), _TIME(_BUCK3)), BUCK_DESC("BUCK4", _BUCK(4), &_buck_ops(), _BUCK(_MIN2), _BUCK(_STEP2), _REG(_B4CTRL2), _REG(_B4CTRL1), _TIME(_BUCK4)), BUCK_DESC("BUCK5", _BUCK(5), &_buck_ops(), _BUCK(_MIN2), _BUCK(_STEP2), _REG(_B5CTRL2), _REG(_B5CTRL1), _TIME(_BUCK5)), }; #ifdef CONFIG_OF static int s2mpu05_pmic_dt_parse_pdata(struct sec_pmic_dev *iodev, struct sec_platform_data *pdata) { struct device_node *pmic_np, *regulators_np, *reg_np; struct sec_regulator_data *rdata; unsigned int i; int ret; u32 val; pmic_np = iodev->dev->of_node; if (!pmic_np) { dev_err(iodev->dev, "could not find pmic sub-node\n"); return -ENODEV; } ret = of_property_read_u32(pmic_np, "g3d_en", &val); if (ret) return -EINVAL; pdata->g3d_en = !!val; regulators_np = of_find_node_by_name(pmic_np, "regulators"); if (!regulators_np) { dev_err(iodev->dev, "could not find regulators sub-node\n"); return -EINVAL; } /* count the number of regulators to be supported in pmic */ pdata->num_regulators = 0; for_each_child_of_node(regulators_np, reg_np) { pdata->num_regulators++; } rdata = devm_kzalloc(iodev->dev, sizeof(*rdata) * pdata->num_regulators, GFP_KERNEL); if (!rdata) { dev_err(iodev->dev, "could not allocate memory for regulator data\n"); return -ENOMEM; } pdata->regulators = rdata; for_each_child_of_node(regulators_np, reg_np) { for (i = 0; i < ARRAY_SIZE(regulators); i++) if (!of_node_cmp(reg_np->name, regulators[i].name)) break; if (i == ARRAY_SIZE(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( iodev->dev, reg_np); rdata->reg_node = reg_np; rdata++; } return 0; } #else static int s2mpu05_pmic_dt_parse_pdata(struct sec_pmic_dev *iodev, struct sec_platform_data *pdata) { return 0; } #endif /* CONFIG_OF */ static int s2mpu05_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 s2mpu05_info *s2mpu05; int i, ret; ret = sec_reg_read(iodev, S2MPU05_REG_ID, &SEC_PMIC_REV(iodev)); if (ret < 0) return ret; if (iodev->dev->of_node) { ret = s2mpu05_pmic_dt_parse_pdata(iodev, pdata); if (ret) return ret; } if (!pdata) { dev_err(pdev->dev.parent, "Platform data not supplied\n"); return -ENODEV; } s2mpu05 = devm_kzalloc(&pdev->dev, sizeof(struct s2mpu05_info), GFP_KERNEL); if (!s2mpu05) return -ENOMEM; s2mpu05->iodev = iodev; s2mpu05->g3d_en_pin = (const char *)of_get_property(iodev->dev->of_node, "buck2en_pin", NULL); s2mpu05->g3d_en_addr = (const char *)of_get_property(iodev->dev->of_node, "buck2en_addr", NULL); static_info = s2mpu05; s2mpu05->g3d_en = pdata->g3d_en; platform_set_drvdata(pdev, s2mpu05); for (i = 0; i < pdata->num_regulators; i++) { int id = pdata->regulators[i].id; config.dev = &pdev->dev; config.regmap = iodev->regmap; config.init_data = pdata->regulators[i].initdata; config.driver_data = s2mpu05; config.of_node = pdata->regulators[i].reg_node; s2mpu05->opmode[id] = regulators[id].enable_mask; s2mpu05->rdev[i] = regulator_register(®ulators[id], &config); if (IS_ERR(s2mpu05->rdev[i])) { ret = PTR_ERR(s2mpu05->rdev[i]); dev_err(&pdev->dev, "regulator init failed for %d\n", i); s2mpu05->rdev[i] = NULL; goto err; } } s2mpu05->num_regulators = pdata->num_regulators; /* RTC Low jitter mode */ ret = sec_reg_update(iodev, S2MPU05_REG_RTC_BUF, 0x10, 0x10); if (ret) { dev_err(&pdev->dev, "set low jitter mode i2c write error\n"); return ret; } /* SELMIF : Buck3,LDO4,6,7,8 controlled by PWREN_MIF */ ret = sec_reg_update(iodev, S2MPU05_REG_SELMIF, 0x1F, 0x1F); if (ret) { dev_err(&pdev->dev, "set Buck2,LDO2,6,7,8,10 controlled by PWREN_MIF : error\n"); return ret; } /* On sequence Config for MIF_G3D, CP_PWR_UP */ sec_reg_write(iodev, 0x62, 0x4E); /* seq. LDO9, LDO8 */ sec_reg_write(iodev, 0x63, 0x33); /* seq. LDO11, LDO10 */ sec_reg_write(iodev, 0x64, 0x54); /* seq. LDO13, LDO12 */ sec_reg_write(iodev, 0x65, 0x76); /* seq. LDO15, LDO14 */ sec_reg_write(iodev, 0x71, 0x80); /* seq. L11~L4 */ sec_reg_write(iodev, 0x72, 0x0F); /* seq. L19~L12 */ return 0; err: for (i = 0; i < S2MPU05_REGULATOR_MAX; i++) regulator_unregister(s2mpu05->rdev[i]); return ret; } static int s2mpu05_pmic_remove(struct platform_device *pdev) { struct s2mpu05_info *s2mpu05 = platform_get_drvdata(pdev); int i; for (i = 0; i < S2MPU05_REGULATOR_MAX; i++) regulator_unregister(s2mpu05->rdev[i]); return 0; } static const struct platform_device_id s2mpu05_pmic_id[] = { { "s2mpu05-pmic", 0}, { }, }; MODULE_DEVICE_TABLE(platform, s2mpu05_pmic_id); static struct platform_driver s2mpu05_pmic_driver = { .driver = { .name = "s2mpu05-pmic", .owner = THIS_MODULE, }, .probe = s2mpu05_pmic_probe, .remove = s2mpu05_pmic_remove, .id_table = s2mpu05_pmic_id, }; static int __init s2mpu05_pmic_init(void) { return platform_driver_register(&s2mpu05_pmic_driver); } subsys_initcall(s2mpu05_pmic_init); static void __exit s2mpu05_pmic_exit(void) { platform_driver_unregister(&s2mpu05_pmic_driver); } module_exit(s2mpu05_pmic_exit); /* Module information */ MODULE_AUTHOR("Samsung LSI"); MODULE_DESCRIPTION("SAMSUNG S2MPU05 Regulator Driver"); MODULE_LICENSE("GPL");