/* * s2mps11.c * * Copyright (c) 2012 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 #define S2MPS11_REGULATOR_CNT ARRAY_SIZE(regulators) struct s2mps11_info { struct regulator_dev *rdev[S2MPS11_REGULATOR_MAX]; int ramp_delay2; int ramp_delay34; int ramp_delay5; int ramp_delay16; int ramp_delay7810; int ramp_delay9; }; static int get_ramp_delay(int ramp_delay) { unsigned char cnt = 0; ramp_delay /= 6250; while (true) { ramp_delay = ramp_delay >> 1; if (ramp_delay == 0) break; cnt++; } if (cnt > 3) cnt = 3; return cnt; } static int s2mps11_regulator_set_voltage_time_sel(struct regulator_dev *rdev, unsigned int old_selector, unsigned int new_selector) { struct s2mps11_info *s2mps11 = rdev_get_drvdata(rdev); unsigned int ramp_delay = 0; int old_volt, new_volt; switch (rdev_get_id(rdev)) { case S2MPS11_BUCK2: ramp_delay = s2mps11->ramp_delay2; break; case S2MPS11_BUCK3: case S2MPS11_BUCK4: ramp_delay = s2mps11->ramp_delay34; break; case S2MPS11_BUCK5: ramp_delay = s2mps11->ramp_delay5; break; case S2MPS11_BUCK6: case S2MPS11_BUCK1: ramp_delay = s2mps11->ramp_delay16; break; case S2MPS11_BUCK7: case S2MPS11_BUCK8: case S2MPS11_BUCK10: ramp_delay = s2mps11->ramp_delay7810; break; case S2MPS11_BUCK9: ramp_delay = s2mps11->ramp_delay9; } if (ramp_delay == 0) ramp_delay = rdev->desc->ramp_delay; old_volt = rdev->desc->min_uV + (rdev->desc->uV_step * old_selector); new_volt = rdev->desc->min_uV + (rdev->desc->uV_step * new_selector); return DIV_ROUND_UP(abs(new_volt - old_volt), ramp_delay); } static int s2mps11_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay) { struct s2mps11_info *s2mps11 = rdev_get_drvdata(rdev); unsigned int ramp_val, ramp_shift, ramp_reg = S2MPS11_REG_RAMP_BUCK; unsigned int ramp_enable = 1, enable_shift = 0; int ret; switch (rdev_get_id(rdev)) { case S2MPS11_BUCK1: if (ramp_delay > s2mps11->ramp_delay16) s2mps11->ramp_delay16 = ramp_delay; else ramp_delay = s2mps11->ramp_delay16; ramp_shift = S2MPS11_BUCK16_RAMP_SHIFT; break; case S2MPS11_BUCK2: enable_shift = S2MPS11_BUCK2_RAMP_EN_SHIFT; if (!ramp_delay) { ramp_enable = 0; break; } s2mps11->ramp_delay2 = ramp_delay; ramp_shift = S2MPS11_BUCK2_RAMP_SHIFT; ramp_reg = S2MPS11_REG_RAMP; break; case S2MPS11_BUCK3: enable_shift = S2MPS11_BUCK3_RAMP_EN_SHIFT; if (!ramp_delay) { ramp_enable = 0; break; } if (ramp_delay > s2mps11->ramp_delay34) s2mps11->ramp_delay34 = ramp_delay; else ramp_delay = s2mps11->ramp_delay34; ramp_shift = S2MPS11_BUCK34_RAMP_SHIFT; ramp_reg = S2MPS11_REG_RAMP; break; case S2MPS11_BUCK4: enable_shift = S2MPS11_BUCK4_RAMP_EN_SHIFT; if (!ramp_delay) { ramp_enable = 0; break; } if (ramp_delay > s2mps11->ramp_delay34) s2mps11->ramp_delay34 = ramp_delay; else ramp_delay = s2mps11->ramp_delay34; ramp_shift = S2MPS11_BUCK34_RAMP_SHIFT; ramp_reg = S2MPS11_REG_RAMP; break; case S2MPS11_BUCK5: s2mps11->ramp_delay5 = ramp_delay; ramp_shift = S2MPS11_BUCK5_RAMP_SHIFT; break; case S2MPS11_BUCK6: enable_shift = S2MPS11_BUCK6_RAMP_EN_SHIFT; if (!ramp_delay) { ramp_enable = 0; break; } if (ramp_delay > s2mps11->ramp_delay16) s2mps11->ramp_delay16 = ramp_delay; else ramp_delay = s2mps11->ramp_delay16; ramp_shift = S2MPS11_BUCK16_RAMP_SHIFT; break; case S2MPS11_BUCK7: case S2MPS11_BUCK8: case S2MPS11_BUCK10: if (ramp_delay > s2mps11->ramp_delay7810) s2mps11->ramp_delay7810 = ramp_delay; else ramp_delay = s2mps11->ramp_delay7810; ramp_shift = S2MPS11_BUCK7810_RAMP_SHIFT; break; case S2MPS11_BUCK9: s2mps11->ramp_delay9 = ramp_delay; ramp_shift = S2MPS11_BUCK9_RAMP_SHIFT; break; default: return 0; } if (!ramp_enable) goto ramp_disable; if (enable_shift) { ret = regmap_update_bits(rdev->regmap, S2MPS11_REG_RAMP, 1 << enable_shift, 1 << enable_shift); if (ret) { dev_err(&rdev->dev, "failed to enable ramp rate\n"); return ret; } } ramp_val = get_ramp_delay(ramp_delay); return regmap_update_bits(rdev->regmap, ramp_reg, 0x3 << ramp_shift, ramp_val << ramp_shift); ramp_disable: return regmap_update_bits(rdev->regmap, S2MPS11_REG_RAMP, 1 << enable_shift, 0); } static struct regulator_ops s2mps11_ldo_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, }; static struct regulator_ops s2mps11_buck_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 = s2mps11_regulator_set_voltage_time_sel, .set_ramp_delay = s2mps11_set_ramp_delay, }; #define regulator_desc_ldo1(num) { \ .name = "LDO"#num, \ .id = S2MPS11_LDO##num, \ .ops = &s2mps11_ldo_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_ldo2(num) { \ .name = "LDO"#num, \ .id = S2MPS11_LDO##num, \ .ops = &s2mps11_ldo_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_buck1_4(num) { \ .name = "BUCK"#num, \ .id = S2MPS11_BUCK##num, \ .ops = &s2mps11_buck_ops, \ .type = REGULATOR_VOLTAGE, \ .owner = THIS_MODULE, \ .min_uV = S2MPS11_BUCK_MIN1, \ .uV_step = S2MPS11_BUCK_STEP1, \ .n_voltages = S2MPS11_BUCK_N_VOLTAGES, \ .ramp_delay = S2MPS11_RAMP_DELAY, \ .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_buck5 { \ .name = "BUCK5", \ .id = S2MPS11_BUCK5, \ .ops = &s2mps11_buck_ops, \ .type = REGULATOR_VOLTAGE, \ .owner = THIS_MODULE, \ .min_uV = S2MPS11_BUCK_MIN1, \ .uV_step = S2MPS11_BUCK_STEP1, \ .n_voltages = S2MPS11_BUCK_N_VOLTAGES, \ .ramp_delay = S2MPS11_RAMP_DELAY, \ .vsel_reg = S2MPS11_REG_B5CTRL2, \ .vsel_mask = S2MPS11_BUCK_VSEL_MASK, \ .enable_reg = S2MPS11_REG_B5CTRL1, \ .enable_mask = S2MPS11_ENABLE_MASK \ } #define regulator_desc_buck6_8(num) { \ .name = "BUCK"#num, \ .id = S2MPS11_BUCK##num, \ .ops = &s2mps11_buck_ops, \ .type = REGULATOR_VOLTAGE, \ .owner = THIS_MODULE, \ .min_uV = S2MPS11_BUCK_MIN1, \ .uV_step = S2MPS11_BUCK_STEP1, \ .n_voltages = S2MPS11_BUCK_N_VOLTAGES, \ .ramp_delay = S2MPS11_RAMP_DELAY, \ .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_buck9 { \ .name = "BUCK9", \ .id = S2MPS11_BUCK9, \ .ops = &s2mps11_buck_ops, \ .type = REGULATOR_VOLTAGE, \ .owner = THIS_MODULE, \ .min_uV = S2MPS11_BUCK_MIN3, \ .uV_step = S2MPS11_BUCK_STEP3, \ .n_voltages = S2MPS11_BUCK_N_VOLTAGES, \ .ramp_delay = S2MPS11_RAMP_DELAY, \ .vsel_reg = S2MPS11_REG_B9CTRL2, \ .vsel_mask = S2MPS11_BUCK_VSEL_MASK, \ .enable_reg = S2MPS11_REG_B9CTRL1, \ .enable_mask = S2MPS11_ENABLE_MASK \ } #define regulator_desc_buck10 { \ .name = "BUCK10", \ .id = S2MPS11_BUCK10, \ .ops = &s2mps11_buck_ops, \ .type = REGULATOR_VOLTAGE, \ .owner = THIS_MODULE, \ .min_uV = S2MPS11_BUCK_MIN2, \ .uV_step = S2MPS11_BUCK_STEP2, \ .n_voltages = S2MPS11_BUCK_N_VOLTAGES, \ .ramp_delay = S2MPS11_RAMP_DELAY, \ .vsel_reg = S2MPS11_REG_B10CTRL2, \ .vsel_mask = S2MPS11_BUCK_VSEL_MASK, \ .enable_reg = S2MPS11_REG_B10CTRL1, \ .enable_mask = S2MPS11_ENABLE_MASK \ } static struct regulator_desc regulators[] = { regulator_desc_ldo2(1), regulator_desc_ldo1(2), regulator_desc_ldo1(3), regulator_desc_ldo1(4), regulator_desc_ldo1(5), regulator_desc_ldo2(6), regulator_desc_ldo1(7), regulator_desc_ldo1(8), regulator_desc_ldo1(9), regulator_desc_ldo1(10), regulator_desc_ldo2(11), regulator_desc_ldo1(12), regulator_desc_ldo1(13), regulator_desc_ldo1(14), regulator_desc_ldo1(15), regulator_desc_ldo1(16), regulator_desc_ldo1(17), regulator_desc_ldo1(18), regulator_desc_ldo1(19), regulator_desc_ldo1(20), regulator_desc_ldo1(21), regulator_desc_ldo2(22), regulator_desc_ldo2(23), regulator_desc_ldo1(24), regulator_desc_ldo1(25), regulator_desc_ldo1(26), regulator_desc_ldo2(27), regulator_desc_ldo1(28), regulator_desc_ldo1(29), regulator_desc_ldo1(30), regulator_desc_ldo1(31), regulator_desc_ldo1(32), regulator_desc_ldo1(33), regulator_desc_ldo1(34), regulator_desc_ldo1(35), regulator_desc_ldo1(36), regulator_desc_ldo1(37), regulator_desc_ldo1(38), regulator_desc_buck1_4(1), regulator_desc_buck1_4(2), regulator_desc_buck1_4(3), regulator_desc_buck1_4(4), regulator_desc_buck5, regulator_desc_buck6_8(6), regulator_desc_buck6_8(7), regulator_desc_buck6_8(8), regulator_desc_buck9, regulator_desc_buck10, }; 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 = dev_get_platdata(iodev->dev); struct of_regulator_match rdata[S2MPS11_REGULATOR_MAX]; struct device_node *reg_np = NULL; struct regulator_config config = { }; struct s2mps11_info *s2mps11; int i, ret; s2mps11 = devm_kzalloc(&pdev->dev, sizeof(struct s2mps11_info), GFP_KERNEL); if (!s2mps11) return -ENOMEM; if (!iodev->dev->of_node) { if (pdata) { goto common_reg; } else { dev_err(pdev->dev.parent, "Platform data or DT node not supplied\n"); return -ENODEV; } } for (i = 0; i < S2MPS11_REGULATOR_CNT; i++) rdata[i].name = regulators[i].name; reg_np = of_find_node_by_name(iodev->dev->of_node, "regulators"); if (!reg_np) { dev_err(&pdev->dev, "could not find regulators sub-node\n"); return -EINVAL; } of_regulator_match(&pdev->dev, reg_np, rdata, S2MPS11_REGULATOR_MAX); common_reg: platform_set_drvdata(pdev, s2mps11); config.dev = &pdev->dev; config.regmap = iodev->regmap_pmic; config.driver_data = s2mps11; for (i = 0; i < S2MPS11_REGULATOR_MAX; i++) { if (!reg_np) { config.init_data = pdata->regulators[i].initdata; config.of_node = pdata->regulators[i].reg_node; } else { config.init_data = rdata[i].init_data; config.of_node = rdata[i].of_node; } s2mps11->rdev[i] = devm_regulator_register(&pdev->dev, ®ulators[i], &config); if (IS_ERR(s2mps11->rdev[i])) { ret = PTR_ERR(s2mps11->rdev[i]); dev_err(&pdev->dev, "regulator init failed for %d\n", i); return ret; } } return 0; } static const struct platform_device_id s2mps11_pmic_id[] = { { "s2mps11-pmic", 0}, { }, }; 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, .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 Regulator Driver"); MODULE_LICENSE("GPL");