--- /dev/null
+/*
+ * Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * Author: Andrew F. Davis <afd@ti.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether expressed or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License version 2 for more details.
+ *
+ * Based on the TPS65912 driver
+ */
+
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/of_regulator.h>
+
+#include <linux/mfd/tps65086.h>
+
+enum tps65086_regulators { BUCK1, BUCK2, BUCK3, BUCK4, BUCK5, BUCK6, LDOA1,
+ LDOA2, LDOA3, SWA1, SWB1, SWB2, VTT };
+
+#define TPS65086_REGULATOR(_name, _of, _id, _nv, _vr, _vm, _er, _em, _lr, _dr, _dm) \
+ [_id] = { \
+ .desc = { \
+ .name = _name, \
+ .of_match = of_match_ptr(_of), \
+ .of_parse_cb = tps65086_of_parse_cb, \
+ .id = _id, \
+ .ops = ®_ops, \
+ .n_voltages = _nv, \
+ .type = REGULATOR_VOLTAGE, \
+ .owner = THIS_MODULE, \
+ .vsel_reg = _vr, \
+ .vsel_mask = _vm, \
+ .enable_reg = _er, \
+ .enable_mask = _em, \
+ .volt_table = NULL, \
+ .linear_ranges = _lr, \
+ .n_linear_ranges = ARRAY_SIZE(_lr), \
+ }, \
+ .decay_reg = _dr, \
+ .decay_mask = _dm, \
+ }
+
+#define TPS65086_SWITCH(_name, _of, _id, _er, _em) \
+ [_id] = { \
+ .desc = { \
+ .name = _name, \
+ .of_match = of_match_ptr(_of), \
+ .of_parse_cb = tps65086_of_parse_cb, \
+ .id = _id, \
+ .ops = &switch_ops, \
+ .type = REGULATOR_VOLTAGE, \
+ .owner = THIS_MODULE, \
+ .enable_reg = _er, \
+ .enable_mask = _em, \
+ }, \
+ }
+
+struct tps65086_regulator {
+ struct regulator_desc desc;
+ unsigned int decay_reg;
+ unsigned int decay_mask;
+};
+
+static const struct regulator_linear_range tps65086_buck126_10mv_ranges[] = {
+ REGULATOR_LINEAR_RANGE(0, 0x0, 0x0, 0),
+ REGULATOR_LINEAR_RANGE(410000, 0x1, 0x7F, 10000),
+};
+
+static const struct regulator_linear_range tps65086_buck126_25mv_ranges[] = {
+ REGULATOR_LINEAR_RANGE(0, 0x0, 0x0, 0),
+ REGULATOR_LINEAR_RANGE(1000000, 0x1, 0x18, 0),
+ REGULATOR_LINEAR_RANGE(1025000, 0x19, 0x7F, 25000),
+};
+
+static const struct regulator_linear_range tps65086_buck345_ranges[] = {
+ REGULATOR_LINEAR_RANGE(0, 0x0, 0x0, 0),
+ REGULATOR_LINEAR_RANGE(425000, 0x1, 0x7F, 25000),
+};
+
+static const struct regulator_linear_range tps65086_ldoa1_ranges[] = {
+ REGULATOR_LINEAR_RANGE(1350000, 0x0, 0x0, 0),
+ REGULATOR_LINEAR_RANGE(1500000, 0x1, 0x7, 100000),
+ REGULATOR_LINEAR_RANGE(2300000, 0x8, 0xA, 100000),
+ REGULATOR_LINEAR_RANGE(2700000, 0xB, 0xD, 150000),
+ REGULATOR_LINEAR_RANGE(3300000, 0xE, 0xE, 0),
+};
+
+static const struct regulator_linear_range tps65086_ldoa23_ranges[] = {
+ REGULATOR_LINEAR_RANGE(700000, 0x0, 0xD, 50000),
+ REGULATOR_LINEAR_RANGE(1400000, 0xE, 0xF, 100000),
+};
+
+/* Operations permitted on regulators */
+static struct regulator_ops reg_ops = {
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
+ .is_enabled = regulator_is_enabled_regmap,
+ .set_voltage_sel = regulator_set_voltage_sel_regmap,
+ .map_voltage = regulator_map_voltage_linear_range,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .list_voltage = regulator_list_voltage_linear_range,
+};
+
+/* Operations permitted on load switches */
+static struct regulator_ops switch_ops = {
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
+ .is_enabled = regulator_is_enabled_regmap,
+};
+
+static int tps65086_of_parse_cb(struct device_node *dev,
+ const struct regulator_desc *desc,
+ struct regulator_config *config);
+
+static struct tps65086_regulator regulators[] = {
+ TPS65086_REGULATOR("BUCK1", "buck1", BUCK1, 0x80, TPS65086_BUCK1CTRL,
+ BUCK_VID_MASK, TPS65086_BUCK123CTRL, BIT(0),
+ tps65086_buck126_10mv_ranges, TPS65086_BUCK1CTRL,
+ BIT(0)),
+ TPS65086_REGULATOR("BUCK2", "buck2", BUCK2, 0x80, TPS65086_BUCK2CTRL,
+ BUCK_VID_MASK, TPS65086_BUCK123CTRL, BIT(1),
+ tps65086_buck126_10mv_ranges, TPS65086_BUCK2CTRL,
+ BIT(0)),
+ TPS65086_REGULATOR("BUCK3", "buck3", BUCK3, 0x80, TPS65086_BUCK3VID,
+ BUCK_VID_MASK, TPS65086_BUCK123CTRL, BIT(2),
+ tps65086_buck345_ranges, TPS65086_BUCK3DECAY,
+ BIT(0)),
+ TPS65086_REGULATOR("BUCK4", "buck4", BUCK4, 0x80, TPS65086_BUCK4VID,
+ BUCK_VID_MASK, TPS65086_BUCK4CTRL, BIT(0),
+ tps65086_buck345_ranges, TPS65086_BUCK4VID,
+ BIT(0)),
+ TPS65086_REGULATOR("BUCK5", "buck5", BUCK5, 0x80, TPS65086_BUCK5VID,
+ BUCK_VID_MASK, TPS65086_BUCK5CTRL, BIT(0),
+ tps65086_buck345_ranges, TPS65086_BUCK5CTRL,
+ BIT(0)),
+ TPS65086_REGULATOR("BUCK6", "buck6", BUCK6, 0x80, TPS65086_BUCK6VID,
+ BUCK_VID_MASK, TPS65086_BUCK6CTRL, BIT(0),
+ tps65086_buck126_10mv_ranges, TPS65086_BUCK6CTRL,
+ BIT(0)),
+ TPS65086_REGULATOR("LDOA1", "ldoa1", LDOA1, 0xF, TPS65086_LDOA1CTRL,
+ VDOA1_VID_MASK, TPS65086_LDOA1CTRL, BIT(0),
+ tps65086_ldoa1_ranges, 0, 0),
+ TPS65086_REGULATOR("LDOA2", "ldoa2", LDOA2, 0x10, TPS65086_LDOA2VID,
+ VDOA23_VID_MASK, TPS65086_LDOA2CTRL, BIT(0),
+ tps65086_ldoa23_ranges, 0, 0),
+ TPS65086_REGULATOR("LDOA3", "ldoa3", LDOA3, 0x10, TPS65086_LDOA3VID,
+ VDOA23_VID_MASK, TPS65086_LDOA3CTRL, BIT(0),
+ tps65086_ldoa23_ranges, 0, 0),
+ TPS65086_SWITCH("SWA1", "swa1", SWA1, TPS65086_SWVTT_EN, BIT(5)),
+ TPS65086_SWITCH("SWB1", "swa2", SWB1, TPS65086_SWVTT_EN, BIT(6)),
+ TPS65086_SWITCH("SWB2", "swa3", SWB2, TPS65086_SWVTT_EN, BIT(7)),
+ TPS65086_SWITCH("VTT", "vtt", VTT, TPS65086_SWVTT_EN, BIT(4)),
+};
+
+static inline bool has_25mv_mode(int id)
+{
+ switch (id) {
+ case BUCK1:
+ case BUCK2:
+ case BUCK6:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static int tps65086_of_parse_cb(struct device_node *dev,
+ const struct regulator_desc *desc,
+ struct regulator_config *config)
+{
+ int ret;
+
+ /* Check for 25mV step mode */
+ if (has_25mv_mode(desc->id) &&
+ of_property_read_bool(config->of_node, "ti,regulator-step-size-25mv")) {
+ regulators[desc->id].desc.linear_ranges =
+ tps65086_buck126_25mv_ranges;
+ regulators[desc->id].desc.n_linear_ranges =
+ ARRAY_SIZE(tps65086_buck126_25mv_ranges);
+ }
+
+ /* Check for decay mode */
+ if (desc->id <= BUCK6 && of_property_read_bool(config->of_node, "ti,regulator-decay")) {
+ ret = regmap_write_bits(config->regmap,
+ regulators[desc->id].decay_reg,
+ regulators[desc->id].decay_mask,
+ regulators[desc->id].decay_mask);
+ if (ret) {
+ dev_err(config->dev, "Error setting decay\n");
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+static int tps65086_regulator_probe(struct platform_device *pdev)
+{
+ struct tps65086 *tps = dev_get_drvdata(pdev->dev.parent);
+ struct regulator_config config = { };
+ struct regulator_dev *rdev;
+ int i;
+
+ platform_set_drvdata(pdev, tps);
+
+ config.dev = &pdev->dev;
+ config.driver_data = tps;
+ config.of_node = pdev->dev.of_node;
+ config.regmap = tps->regmap;
+
+ for (i = 0; i < ARRAY_SIZE(regulators); i++) {
+ rdev = devm_regulator_register(&pdev->dev, ®ulators[i].desc,
+ &config);
+ if (IS_ERR(rdev)) {
+ dev_err(tps->dev, "failed to register %s regulator\n",
+ pdev->name);
+ return PTR_ERR(rdev);
+ }
+ }
+
+ return 0;
+}
+
+static const struct platform_device_id tps65086_regulator_id_table[] = {
+ { "tps65086-regulator", },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(platform, tps65086_regulator_id_table);
+
+static struct platform_driver tps65086_regulator_driver = {
+ .driver = {
+ .name = "tps65086-regulator",
+ },
+ .probe = tps65086_regulator_probe,
+ .id_table = tps65086_regulator_id_table,
+};
+module_platform_driver(tps65086_regulator_driver);
+
+MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>");
+MODULE_DESCRIPTION("TPS65086 Regulator driver");
+MODULE_LICENSE("GPL v2");
projects / platform / kernel / linux-rpi.git / commitdiff