--- /dev/null
+/*
+ * tps65217-regulator.c
+ *
+ * Regulator driver for TPS65217 PMIC
+ *
+ * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.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 version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/platform_device.h>
+
+#include <linux/regulator/of_regulator.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+#include <linux/mfd/tps65217.h>
+
+#define TPS65217_REGULATOR(_name, _id, _of_match, _ops, _n, _vr, _vm, _em, \
+ _t, _lr, _nlr) \
+ { \
+ .name = _name, \
+ .id = _id, \
+ .of_match = of_match_ptr(_of_match), \
+ .regulators_node= of_match_ptr("regulators"), \
+ .ops = &_ops, \
+ .n_voltages = _n, \
+ .type = REGULATOR_VOLTAGE, \
+ .owner = THIS_MODULE, \
+ .vsel_reg = _vr, \
+ .vsel_mask = _vm, \
+ .enable_reg = TPS65217_REG_ENABLE, \
+ .enable_mask = _em, \
+ .volt_table = _t, \
+ .linear_ranges = _lr, \
+ .n_linear_ranges = _nlr, \
+ } \
+
+static const unsigned int LDO1_VSEL_table[] = {
+ 1000000, 1100000, 1200000, 1250000,
+ 1300000, 1350000, 1400000, 1500000,
+ 1600000, 1800000, 2500000, 2750000,
+ 2800000, 3000000, 3100000, 3300000,
+};
+
+static const struct regulator_linear_range tps65217_uv1_ranges[] = {
+ REGULATOR_LINEAR_RANGE(900000, 0, 24, 25000),
+ REGULATOR_LINEAR_RANGE(1550000, 25, 30, 50000),
+ REGULATOR_LINEAR_RANGE(1850000, 31, 52, 50000),
+ REGULATOR_LINEAR_RANGE(3000000, 53, 55, 100000),
+ REGULATOR_LINEAR_RANGE(3300000, 56, 62, 0),
+};
+
+static const struct regulator_linear_range tps65217_uv2_ranges[] = {
+ REGULATOR_LINEAR_RANGE(1500000, 0, 8, 50000),
+ REGULATOR_LINEAR_RANGE(2000000, 9, 13, 100000),
+ REGULATOR_LINEAR_RANGE(2450000, 14, 31, 50000),
+};
+
+static int tps65217_pmic_enable(struct regulator_dev *dev)
+{
+ struct tps65217 *tps = rdev_get_drvdata(dev);
+ int rid = rdev_get_id(dev);
+
+ if (rid < TPS65217_DCDC_1 || rid > TPS65217_LDO_4)
+ return -EINVAL;
+
+ /* Enable the regulator and password protection is level 1 */
+ return tps65217_set_bits(tps, TPS65217_REG_ENABLE,
+ dev->desc->enable_mask, dev->desc->enable_mask,
+ TPS65217_PROTECT_L1);
+}
+
+static int tps65217_pmic_disable(struct regulator_dev *dev)
+{
+ struct tps65217 *tps = rdev_get_drvdata(dev);
+ int rid = rdev_get_id(dev);
+
+ if (rid < TPS65217_DCDC_1 || rid > TPS65217_LDO_4)
+ return -EINVAL;
+
+ /* Disable the regulator and password protection is level 1 */
+ return tps65217_clear_bits(tps, TPS65217_REG_ENABLE,
+ dev->desc->enable_mask, TPS65217_PROTECT_L1);
+}
+
+static int tps65217_pmic_set_voltage_sel(struct regulator_dev *dev,
+ unsigned selector)
+{
+ int ret;
+ struct tps65217 *tps = rdev_get_drvdata(dev);
+ unsigned int rid = rdev_get_id(dev);
+
+ /* Set the voltage based on vsel value and write protect level is 2 */
+ ret = tps65217_set_bits(tps, dev->desc->vsel_reg, dev->desc->vsel_mask,
+ selector, TPS65217_PROTECT_L2);
+
+ /* Set GO bit for DCDCx to initiate voltage transistion */
+ switch (rid) {
+ case TPS65217_DCDC_1 ... TPS65217_DCDC_3:
+ ret = tps65217_set_bits(tps, TPS65217_REG_DEFSLEW,
+ TPS65217_DEFSLEW_GO, TPS65217_DEFSLEW_GO,
+ TPS65217_PROTECT_L2);
+ break;
+ }
+
+ return ret;
+}
+
+/* Operations permitted on DCDCx, LDO2, LDO3 and LDO4 */
+static struct regulator_ops tps65217_pmic_ops = {
+ .is_enabled = regulator_is_enabled_regmap,
+ .enable = tps65217_pmic_enable,
+ .disable = tps65217_pmic_disable,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .set_voltage_sel = tps65217_pmic_set_voltage_sel,
+ .list_voltage = regulator_list_voltage_linear_range,
+ .map_voltage = regulator_map_voltage_linear_range,
+};
+
+/* Operations permitted on LDO1 */
+static struct regulator_ops tps65217_pmic_ldo1_ops = {
+ .is_enabled = regulator_is_enabled_regmap,
+ .enable = tps65217_pmic_enable,
+ .disable = tps65217_pmic_disable,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .set_voltage_sel = tps65217_pmic_set_voltage_sel,
+ .list_voltage = regulator_list_voltage_table,
+ .map_voltage = regulator_map_voltage_ascend,
+};
+
+static const struct regulator_desc regulators[] = {
+ TPS65217_REGULATOR("DCDC1", TPS65217_DCDC_1, "dcdc1",
+ tps65217_pmic_ops, 64, TPS65217_REG_DEFDCDC1,
+ TPS65217_DEFDCDCX_DCDC_MASK, TPS65217_ENABLE_DC1_EN,
+ NULL, tps65217_uv1_ranges, 2),
+ TPS65217_REGULATOR("DCDC2", TPS65217_DCDC_2, "dcdc2",
+ tps65217_pmic_ops, 64, TPS65217_REG_DEFDCDC2,
+ TPS65217_DEFDCDCX_DCDC_MASK, TPS65217_ENABLE_DC2_EN,
+ NULL, tps65217_uv1_ranges,
+ ARRAY_SIZE(tps65217_uv1_ranges)),
+ TPS65217_REGULATOR("DCDC3", TPS65217_DCDC_3, "dcdc3",
+ tps65217_pmic_ops, 64, TPS65217_REG_DEFDCDC3,
+ TPS65217_DEFDCDCX_DCDC_MASK, TPS65217_ENABLE_DC3_EN,
+ NULL, tps65217_uv1_ranges, 1),
+ TPS65217_REGULATOR("LDO1", TPS65217_LDO_1, "ldo1",
+ tps65217_pmic_ldo1_ops, 16, TPS65217_REG_DEFLDO1,
+ TPS65217_DEFLDO1_LDO1_MASK, TPS65217_ENABLE_LDO1_EN,
+ LDO1_VSEL_table, NULL, 0),
+ TPS65217_REGULATOR("LDO2", TPS65217_LDO_2, "ldo2", tps65217_pmic_ops,
+ 64, TPS65217_REG_DEFLDO2,
+ TPS65217_DEFLDO2_LDO2_MASK, TPS65217_ENABLE_LDO2_EN,
+ NULL, tps65217_uv1_ranges,
+ ARRAY_SIZE(tps65217_uv1_ranges)),
+ TPS65217_REGULATOR("LDO3", TPS65217_LDO_3, "ldo3", tps65217_pmic_ops,
+ 32, TPS65217_REG_DEFLS1, TPS65217_DEFLDO3_LDO3_MASK,
+ TPS65217_ENABLE_LS1_EN | TPS65217_DEFLDO3_LDO3_EN,
+ NULL, tps65217_uv2_ranges,
+ ARRAY_SIZE(tps65217_uv2_ranges)),
+ TPS65217_REGULATOR("LDO4", TPS65217_LDO_4, "ldo4", tps65217_pmic_ops,
+ 32, TPS65217_REG_DEFLS2, TPS65217_DEFLDO4_LDO4_MASK,
+ TPS65217_ENABLE_LS2_EN | TPS65217_DEFLDO4_LDO4_EN,
+ NULL, tps65217_uv2_ranges,
+ ARRAY_SIZE(tps65217_uv2_ranges)),
+};
+
+static int tps65217_regulator_probe(struct platform_device *pdev)
+{
+ struct tps65217 *tps = dev_get_drvdata(pdev->dev.parent);
+ struct tps65217_board *pdata = dev_get_platdata(tps->dev);
+ struct regulator_dev *rdev;
+ struct regulator_config config = { };
+ int i;
+
+ if (tps65217_chip_id(tps) != TPS65217) {
+ dev_err(&pdev->dev, "Invalid tps chip version\n");
+ return -ENODEV;
+ }
+
+ platform_set_drvdata(pdev, tps);
+
+ for (i = 0; i < TPS65217_NUM_REGULATOR; i++) {
+ /* Register the regulators */
+ config.dev = tps->dev;
+ if (pdata)
+ config.init_data = pdata->tps65217_init_data[i];
+ config.driver_data = tps;
+ config.regmap = tps->regmap;
+
+ rdev = devm_regulator_register(&pdev->dev, ®ulators[i],
+ &config);
+ if (IS_ERR(rdev)) {
+ dev_err(tps->dev, "failed to register %s regulator\n",
+ pdev->name);
+ return PTR_ERR(rdev);
+ }
+ }
+
+ return 0;
+}
+
+static struct platform_driver tps65217_regulator_driver = {
+ .driver = {
+ .name = "tps65217-pmic",
+ },
+ .probe = tps65217_regulator_probe,
+};
+
+static int __init tps65217_regulator_init(void)
+{
+ return platform_driver_register(&tps65217_regulator_driver);
+}
+subsys_initcall(tps65217_regulator_init);
+
+static void __exit tps65217_regulator_exit(void)
+{
+ platform_driver_unregister(&tps65217_regulator_driver);
+}
+module_exit(tps65217_regulator_exit);
+
+MODULE_AUTHOR("AnilKumar Ch <anilkumar@ti.com>");
+MODULE_DESCRIPTION("TPS65217 voltage regulator driver");
+MODULE_ALIAS("platform:tps65217-pmic");
+MODULE_LICENSE("GPL v2");
Code Review / kvmfornfv.git / blobdiff