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path: root/drivers/regulator/tps65217-regulator.c
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Diffstat (limited to 'drivers/regulator/tps65217-regulator.c')
-rw-r--r--drivers/regulator/tps65217-regulator.c493
1 files changed, 493 insertions, 0 deletions
diff --git a/drivers/regulator/tps65217-regulator.c b/drivers/regulator/tps65217-regulator.c
new file mode 100644
index 000000000000..28a10eaeda17
--- /dev/null
+++ b/drivers/regulator/tps65217-regulator.c
@@ -0,0 +1,493 @@
+/*
+ * 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/driver.h>
+#include <linux/regulator/machine.h>
+#include <linux/mfd/tps65217.h>
+
+#define TPS65217_REGULATOR(_name, _id, _ops, _n) \
+ { \
+ .name = _name, \
+ .id = _id, \
+ .ops = &_ops, \
+ .n_voltages = _n, \
+ .type = REGULATOR_VOLTAGE, \
+ .owner = THIS_MODULE, \
+ } \
+
+#define TPS65217_INFO(_nm, _min, _max, _f1, _f2, _t, _n, _em, _vr, _vm) \
+ { \
+ .name = _nm, \
+ .min_uV = _min, \
+ .max_uV = _max, \
+ .vsel_to_uv = _f1, \
+ .uv_to_vsel = _f2, \
+ .table = _t, \
+ .table_len = _n, \
+ .enable_mask = _em, \
+ .set_vout_reg = _vr, \
+ .set_vout_mask = _vm, \
+ }
+
+static const int LDO1_VSEL_table[] = {
+ 1000000, 1100000, 1200000, 1250000,
+ 1300000, 1350000, 1400000, 1500000,
+ 1600000, 1800000, 2500000, 2750000,
+ 2800000, 3000000, 3100000, 3300000,
+};
+
+static int tps65217_vsel_to_uv1(unsigned int vsel)
+{
+ int uV = 0;
+
+ if (vsel > 63)
+ return -EINVAL;
+
+ if (vsel <= 24)
+ uV = vsel * 25000 + 900000;
+ else if (vsel <= 52)
+ uV = (vsel - 24) * 50000 + 1500000;
+ else if (vsel < 56)
+ uV = (vsel - 52) * 100000 + 2900000;
+ else
+ uV = 3300000;
+
+ return uV;
+}
+
+static int tps65217_uv_to_vsel1(int uV, unsigned int *vsel)
+{
+ if ((uV < 0) && (uV > 3300000))
+ return -EINVAL;
+
+ if (uV <= 1500000)
+ *vsel = (uV - 875001) / 25000;
+ else if (uV <= 2900000)
+ *vsel = 24 + (uV - 1450001) / 50000;
+ else if (uV < 3300000)
+ *vsel = 52 + (uV - 2800001) / 100000;
+ else
+ *vsel = 56;
+
+ return 0;
+}
+
+static int tps65217_vsel_to_uv2(unsigned int vsel)
+{
+ int uV = 0;
+
+ if (vsel > 31)
+ return -EINVAL;
+
+ if (vsel <= 8)
+ uV = vsel * 50000 + 1500000;
+ else if (vsel <= 13)
+ uV = (vsel - 8) * 100000 + 1900000;
+ else
+ uV = (vsel - 13) * 50000 + 2400000;
+
+ return uV;
+}
+
+static int tps65217_uv_to_vsel2(int uV, unsigned int *vsel)
+{
+ if ((uV < 0) && (uV > 3300000))
+ return -EINVAL;
+
+ if (uV <= 1900000)
+ *vsel = (uV - 1450001) / 50000;
+ else if (uV <= 2400000)
+ *vsel = 8 + (uV - 1800001) / 100000;
+ else
+ *vsel = 13 + (uV - 2350001) / 50000;
+
+ return 0;
+}
+
+static struct tps_info tps65217_pmic_regs[] = {
+ TPS65217_INFO("DCDC1", 900000, 1800000, tps65217_vsel_to_uv1,
+ tps65217_uv_to_vsel1, NULL, 64, TPS65217_ENABLE_DC1_EN,
+ TPS65217_REG_DEFDCDC1, TPS65217_DEFDCDCX_DCDC_MASK),
+ TPS65217_INFO("DCDC2", 900000, 3300000, tps65217_vsel_to_uv1,
+ tps65217_uv_to_vsel1, NULL, 64, TPS65217_ENABLE_DC2_EN,
+ TPS65217_REG_DEFDCDC2, TPS65217_DEFDCDCX_DCDC_MASK),
+ TPS65217_INFO("DCDC3", 900000, 1500000, tps65217_vsel_to_uv1,
+ tps65217_uv_to_vsel1, NULL, 64, TPS65217_ENABLE_DC3_EN,
+ TPS65217_REG_DEFDCDC3, TPS65217_DEFDCDCX_DCDC_MASK),
+ TPS65217_INFO("LDO1", 1000000, 3300000, NULL, NULL, LDO1_VSEL_table,
+ 16, TPS65217_ENABLE_LDO1_EN, TPS65217_REG_DEFLDO1,
+ TPS65217_DEFLDO1_LDO1_MASK),
+ TPS65217_INFO("LDO2", 900000, 3300000, tps65217_vsel_to_uv1,
+ tps65217_uv_to_vsel1, NULL, 64, TPS65217_ENABLE_LDO2_EN,
+ TPS65217_REG_DEFLDO2, TPS65217_DEFLDO2_LDO2_MASK),
+ TPS65217_INFO("LDO3", 1800000, 3300000, tps65217_vsel_to_uv2,
+ tps65217_uv_to_vsel2, NULL, 32,
+ TPS65217_ENABLE_LS1_EN | TPS65217_DEFLDO3_LDO3_EN,
+ TPS65217_REG_DEFLS1, TPS65217_DEFLDO3_LDO3_MASK),
+ TPS65217_INFO("LDO4", 1800000, 3300000, tps65217_vsel_to_uv2,
+ tps65217_uv_to_vsel2, NULL, 32,
+ TPS65217_ENABLE_LS2_EN | TPS65217_DEFLDO4_LDO4_EN,
+ TPS65217_REG_DEFLS2, TPS65217_DEFLDO4_LDO4_MASK),
+};
+
+static int tps65217_pmic_dcdc_is_enabled(struct regulator_dev *dev)
+{
+ int ret;
+ struct tps65217 *tps = rdev_get_drvdata(dev);
+ unsigned int data, dcdc = rdev_get_id(dev);
+
+ if (dcdc < TPS65217_DCDC_1 || dcdc > TPS65217_DCDC_3)
+ return -EINVAL;
+
+ ret = tps65217_reg_read(tps, TPS65217_REG_ENABLE, &data);
+ if (ret)
+ return ret;
+
+ return (data & tps->info[dcdc]->enable_mask) ? 1 : 0;
+}
+
+static int tps65217_pmic_ldo_is_enabled(struct regulator_dev *dev)
+{
+ int ret;
+ struct tps65217 *tps = rdev_get_drvdata(dev);
+ unsigned int data, ldo = rdev_get_id(dev);
+
+ if (ldo < TPS65217_LDO_1 || ldo > TPS65217_LDO_4)
+ return -EINVAL;
+
+ ret = tps65217_reg_read(tps, TPS65217_REG_ENABLE, &data);
+ if (ret)
+ return ret;
+
+ return (data & tps->info[ldo]->enable_mask) ? 1 : 0;
+}
+
+static int tps65217_pmic_dcdc_enable(struct regulator_dev *dev)
+{
+ struct tps65217 *tps = rdev_get_drvdata(dev);
+ unsigned int dcdc = rdev_get_id(dev);
+
+ if (dcdc < TPS65217_DCDC_1 || dcdc > TPS65217_DCDC_3)
+ return -EINVAL;
+
+ /* Enable the regulator and password protection is level 1 */
+ return tps65217_set_bits(tps, TPS65217_REG_ENABLE,
+ tps->info[dcdc]->enable_mask,
+ tps->info[dcdc]->enable_mask,
+ TPS65217_PROTECT_L1);
+}
+
+static int tps65217_pmic_dcdc_disable(struct regulator_dev *dev)
+{
+ struct tps65217 *tps = rdev_get_drvdata(dev);
+ unsigned int dcdc = rdev_get_id(dev);
+
+ if (dcdc < TPS65217_DCDC_1 || dcdc > TPS65217_DCDC_3)
+ return -EINVAL;
+
+ /* Disable the regulator and password protection is level 1 */
+ return tps65217_clear_bits(tps, TPS65217_REG_ENABLE,
+ tps->info[dcdc]->enable_mask, TPS65217_PROTECT_L1);
+}
+
+static int tps65217_pmic_ldo_enable(struct regulator_dev *dev)
+{
+ struct tps65217 *tps = rdev_get_drvdata(dev);
+ unsigned int ldo = rdev_get_id(dev);
+
+ if (ldo < TPS65217_LDO_1 || ldo > TPS65217_LDO_4)
+ return -EINVAL;
+
+ /* Enable the regulator and password protection is level 1 */
+ return tps65217_set_bits(tps, TPS65217_REG_ENABLE,
+ tps->info[ldo]->enable_mask,
+ tps->info[ldo]->enable_mask,
+ TPS65217_PROTECT_L1);
+}
+
+static int tps65217_pmic_ldo_disable(struct regulator_dev *dev)
+{
+ struct tps65217 *tps = rdev_get_drvdata(dev);
+ unsigned int ldo = rdev_get_id(dev);
+
+ if (ldo < TPS65217_LDO_1 || ldo > TPS65217_LDO_4)
+ return -EINVAL;
+
+ /* Disable the regulator and password protection is level 1 */
+ return tps65217_clear_bits(tps, TPS65217_REG_ENABLE,
+ tps->info[ldo]->enable_mask, TPS65217_PROTECT_L1);
+}
+
+static int tps65217_pmic_dcdc_get_voltage_sel(struct regulator_dev *dev)
+{
+ int ret;
+ struct tps65217 *tps = rdev_get_drvdata(dev);
+ unsigned int selector, dcdc = rdev_get_id(dev);
+
+ if (dcdc < TPS65217_DCDC_1 || dcdc > TPS65217_DCDC_3)
+ return -EINVAL;
+
+ ret = tps65217_reg_read(tps, tps->info[dcdc]->set_vout_reg, &selector);
+ if (ret)
+ return ret;
+
+ selector &= tps->info[dcdc]->set_vout_mask;
+
+ return selector;
+}
+
+static int tps65217_pmic_dcdc_set_voltage(struct regulator_dev *dev,
+ int min_uV, int max_uV, unsigned *selector)
+{
+ int ret;
+ struct tps65217 *tps = rdev_get_drvdata(dev);
+ unsigned int dcdc = rdev_get_id(dev);
+
+ if (dcdc < TPS65217_DCDC_1 || dcdc > TPS65217_DCDC_3)
+ return -EINVAL;
+
+ if (min_uV < tps->info[dcdc]->min_uV
+ || min_uV > tps->info[dcdc]->max_uV)
+ return -EINVAL;
+
+ if (max_uV < tps->info[dcdc]->min_uV
+ || max_uV > tps->info[dcdc]->max_uV)
+ return -EINVAL;
+
+ ret = tps->info[dcdc]->uv_to_vsel(min_uV, selector);
+ if (ret)
+ return ret;
+
+ /* Set the voltage based on vsel value and write protect level is 2 */
+ ret = tps65217_set_bits(tps, tps->info[dcdc]->set_vout_reg,
+ tps->info[dcdc]->set_vout_mask,
+ *selector, TPS65217_PROTECT_L2);
+ if (ret)
+ return ret;
+
+ /* Set GO bit to initiate voltage transistion */
+ return tps65217_set_bits(tps, TPS65217_REG_DEFSLEW,
+ TPS65217_DEFSLEW_GO, TPS65217_DEFSLEW_GO,
+ TPS65217_PROTECT_L2);
+}
+
+static int tps65217_pmic_ldo_get_voltage_sel(struct regulator_dev *dev)
+{
+ int ret;
+ struct tps65217 *tps = rdev_get_drvdata(dev);
+ unsigned int selector, ldo = rdev_get_id(dev);
+
+ if (ldo < TPS65217_LDO_1 || ldo > TPS65217_LDO_4)
+ return -EINVAL;
+
+ ret = tps65217_reg_read(tps, tps->info[ldo]->set_vout_reg, &selector);
+ if (ret)
+ return ret;
+
+ selector &= tps->info[ldo]->set_vout_mask;
+
+ return selector;
+}
+
+static int tps65217_pmic_ldo_set_voltage_sel(struct regulator_dev *dev,
+ unsigned selector)
+{
+ struct tps65217 *tps = rdev_get_drvdata(dev);
+ int ldo = rdev_get_id(dev);
+
+ if (ldo != TPS65217_LDO_1)
+ return -EINVAL;
+
+ if (selector >= tps->info[ldo]->table_len)
+ return -EINVAL;
+
+ /* Set the voltage based on vsel value and write protect level is 2 */
+ return tps65217_set_bits(tps, tps->info[ldo]->set_vout_reg,
+ tps->info[ldo]->set_vout_mask,
+ selector, TPS65217_PROTECT_L2);
+}
+
+static int tps65217_pmic_ldo_set_voltage(struct regulator_dev *dev,
+ int min_uV, int max_uV, unsigned *selector)
+{
+ int ret;
+ struct tps65217 *tps = rdev_get_drvdata(dev);
+ unsigned int ldo = rdev_get_id(dev);
+
+ if (ldo < TPS65217_LDO_2 || ldo > TPS65217_LDO_4)
+ return -EINVAL;
+
+ if (min_uV < tps->info[ldo]->min_uV
+ || min_uV > tps->info[ldo]->max_uV)
+ return -EINVAL;
+
+ if (max_uV < tps->info[ldo]->min_uV
+ || max_uV > tps->info[ldo]->max_uV)
+ return -EINVAL;
+
+ ret = tps->info[ldo]->uv_to_vsel(min_uV, selector);
+ if (ret)
+ return ret;
+
+ /* Set the voltage based on vsel value and write protect level is 2 */
+ return tps65217_set_bits(tps, tps->info[ldo]->set_vout_reg,
+ tps->info[ldo]->set_vout_mask,
+ *selector, TPS65217_PROTECT_L2);
+}
+
+static int tps65217_pmic_dcdc_list_voltage(struct regulator_dev *dev,
+ unsigned selector)
+{
+ struct tps65217 *tps = rdev_get_drvdata(dev);
+ unsigned int dcdc = rdev_get_id(dev);
+
+ if (dcdc < TPS65217_DCDC_1 || dcdc > TPS65217_DCDC_3)
+ return -EINVAL;
+
+ if (selector >= tps->info[dcdc]->table_len)
+ return -EINVAL;
+
+ return tps->info[dcdc]->vsel_to_uv(selector);
+}
+
+static int tps65217_pmic_ldo_list_voltage(struct regulator_dev *dev,
+ unsigned selector)
+{
+ struct tps65217 *tps = rdev_get_drvdata(dev);
+ unsigned int ldo = rdev_get_id(dev);
+
+ if (ldo < TPS65217_LDO_1 || ldo > TPS65217_LDO_4)
+ return -EINVAL;
+
+ if (selector >= tps->info[ldo]->table_len)
+ return -EINVAL;
+
+ if (tps->info[ldo]->table)
+ return tps->info[ldo]->table[selector];
+
+ return tps->info[ldo]->vsel_to_uv(selector);
+}
+
+/* Operations permitted on DCDCx */
+static struct regulator_ops tps65217_pmic_dcdc_ops = {
+ .is_enabled = tps65217_pmic_dcdc_is_enabled,
+ .enable = tps65217_pmic_dcdc_enable,
+ .disable = tps65217_pmic_dcdc_disable,
+ .get_voltage_sel = tps65217_pmic_dcdc_get_voltage_sel,
+ .set_voltage = tps65217_pmic_dcdc_set_voltage,
+ .list_voltage = tps65217_pmic_dcdc_list_voltage,
+};
+
+/* Operations permitted on LDO1 */
+static struct regulator_ops tps65217_pmic_ldo1_ops = {
+ .is_enabled = tps65217_pmic_ldo_is_enabled,
+ .enable = tps65217_pmic_ldo_enable,
+ .disable = tps65217_pmic_ldo_disable,
+ .get_voltage_sel = tps65217_pmic_ldo_get_voltage_sel,
+ .set_voltage_sel = tps65217_pmic_ldo_set_voltage_sel,
+ .list_voltage = tps65217_pmic_ldo_list_voltage,
+};
+
+/* Operations permitted on LDO2, LDO3 and LDO4 */
+static struct regulator_ops tps65217_pmic_ldo234_ops = {
+ .is_enabled = tps65217_pmic_ldo_is_enabled,
+ .enable = tps65217_pmic_ldo_enable,
+ .disable = tps65217_pmic_ldo_disable,
+ .get_voltage_sel = tps65217_pmic_ldo_get_voltage_sel,
+ .set_voltage = tps65217_pmic_ldo_set_voltage,
+ .list_voltage = tps65217_pmic_ldo_list_voltage,
+};
+
+static struct regulator_desc regulators[] = {
+ TPS65217_REGULATOR("DCDC1", TPS65217_DCDC_1,
+ tps65217_pmic_dcdc_ops, 64),
+ TPS65217_REGULATOR("DCDC2",TPS65217_DCDC_2,
+ tps65217_pmic_dcdc_ops, 64),
+ TPS65217_REGULATOR("DCDC3", TPS65217_DCDC_3,
+ tps65217_pmic_dcdc_ops, 64),
+ TPS65217_REGULATOR("LDO1", TPS65217_LDO_1,
+ tps65217_pmic_ldo1_ops, 16),
+ TPS65217_REGULATOR("LDO2", TPS65217_LDO_2,
+ tps65217_pmic_ldo234_ops, 64),
+ TPS65217_REGULATOR("LDO3", TPS65217_LDO_3,
+ tps65217_pmic_ldo234_ops, 32),
+ TPS65217_REGULATOR("LDO4", TPS65217_LDO_4,
+ tps65217_pmic_ldo234_ops, 32),
+};
+
+static int __devinit tps65217_regulator_probe(struct platform_device *pdev)
+{
+ struct regulator_dev *rdev;
+ struct tps65217 *tps;
+ struct tps_info *info = &tps65217_pmic_regs[pdev->id];
+
+ /* Already set by core driver */
+ tps = dev_to_tps65217(pdev->dev.parent);
+ tps->info[pdev->id] = info;
+
+ rdev = regulator_register(&regulators[pdev->id], &pdev->dev,
+ pdev->dev.platform_data, tps, NULL);
+ if (IS_ERR(rdev))
+ return PTR_ERR(rdev);
+
+ platform_set_drvdata(pdev, rdev);
+
+ return 0;
+}
+
+static int __devexit tps65217_regulator_remove(struct platform_device *pdev)
+{
+ struct regulator_dev *rdev = platform_get_drvdata(pdev);
+
+ platform_set_drvdata(pdev, NULL);
+ regulator_unregister(rdev);
+
+ return 0;
+}
+
+static struct platform_driver tps65217_regulator_driver = {
+ .driver = {
+ .name = "tps65217-pmic",
+ },
+ .probe = tps65217_regulator_probe,
+ .remove = __devexit_p(tps65217_regulator_remove),
+};
+
+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");
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-11-06 13:33:10 +0100