--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+//
+// Regulator driver for tps6594 PMIC
+//
+// Copyright (C) 2023 BayLibre Incorporated - https://www.baylibre.com/
+
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+#include <linux/regulator/of_regulator.h>
+
+#include <linux/mfd/tps6594.h>
+
+#define BUCK_NB 5
+#define LDO_NB 4
+#define MULTI_PHASE_NB 4
+#define REGS_INT_NB 4
+
+enum tps6594_regulator_id {
+ /* DCDC's */
+ TPS6594_BUCK_1,
+ TPS6594_BUCK_2,
+ TPS6594_BUCK_3,
+ TPS6594_BUCK_4,
+ TPS6594_BUCK_5,
+
+ /* LDOs */
+ TPS6594_LDO_1,
+ TPS6594_LDO_2,
+ TPS6594_LDO_3,
+ TPS6594_LDO_4,
+};
+
+enum tps6594_multi_regulator_id {
+ /* Multi-phase DCDC's */
+ TPS6594_BUCK_12,
+ TPS6594_BUCK_34,
+ TPS6594_BUCK_123,
+ TPS6594_BUCK_1234,
+};
+
+struct tps6594_regulator_irq_type {
+ const char *irq_name;
+ const char *regulator_name;
+ const char *event_name;
+ unsigned long event;
+};
+
+static struct tps6594_regulator_irq_type tps6594_ext_regulator_irq_types[] = {
+ { TPS6594_IRQ_NAME_VCCA_OV, "VCCA", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
+ { TPS6594_IRQ_NAME_VCCA_UV, "VCCA", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
+ { TPS6594_IRQ_NAME_VMON1_OV, "VMON1", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
+ { TPS6594_IRQ_NAME_VMON1_UV, "VMON1", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
+ { TPS6594_IRQ_NAME_VMON1_RV, "VMON1", "residual voltage",
+ REGULATOR_EVENT_OVER_VOLTAGE_WARN },
+ { TPS6594_IRQ_NAME_VMON2_OV, "VMON2", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
+ { TPS6594_IRQ_NAME_VMON2_UV, "VMON2", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
+ { TPS6594_IRQ_NAME_VMON2_RV, "VMON2", "residual voltage",
+ REGULATOR_EVENT_OVER_VOLTAGE_WARN },
+};
+
+struct tps6594_regulator_irq_data {
+ struct device *dev;
+ struct tps6594_regulator_irq_type *type;
+ struct regulator_dev *rdev;
+};
+
+struct tps6594_ext_regulator_irq_data {
+ struct device *dev;
+ struct tps6594_regulator_irq_type *type;
+};
+
+#define TPS6594_REGULATOR(_name, _of, _id, _type, _ops, _n, _vr, _vm, _er, \
+ _em, _cr, _cm, _lr, _nlr, _delay, _fuv, \
+ _ct, _ncl, _bpm) \
+ { \
+ .name = _name, \
+ .of_match = _of, \
+ .regulators_node = of_match_ptr("regulators"), \
+ .supply_name = _of, \
+ .id = _id, \
+ .ops = &(_ops), \
+ .n_voltages = _n, \
+ .type = _type, \
+ .owner = THIS_MODULE, \
+ .vsel_reg = _vr, \
+ .vsel_mask = _vm, \
+ .csel_reg = _cr, \
+ .csel_mask = _cm, \
+ .curr_table = _ct, \
+ .n_current_limits = _ncl, \
+ .enable_reg = _er, \
+ .enable_mask = _em, \
+ .volt_table = NULL, \
+ .linear_ranges = _lr, \
+ .n_linear_ranges = _nlr, \
+ .ramp_delay = _delay, \
+ .fixed_uV = _fuv, \
+ .bypass_reg = _vr, \
+ .bypass_mask = _bpm, \
+ } \
+
+static const struct linear_range bucks_ranges[] = {
+ REGULATOR_LINEAR_RANGE(300000, 0x0, 0xe, 20000),
+ REGULATOR_LINEAR_RANGE(600000, 0xf, 0x72, 5000),
+ REGULATOR_LINEAR_RANGE(1100000, 0x73, 0xaa, 10000),
+ REGULATOR_LINEAR_RANGE(1660000, 0xab, 0xff, 20000),
+};
+
+static const struct linear_range ldos_1_2_3_ranges[] = {
+ REGULATOR_LINEAR_RANGE(600000, 0x4, 0x3a, 50000),
+};
+
+static const struct linear_range ldos_4_ranges[] = {
+ REGULATOR_LINEAR_RANGE(1200000, 0x20, 0x74, 25000),
+};
+
+/* Operations permitted on BUCK1/2/3/4/5 */
+static const struct regulator_ops tps6594_bucks_ops = {
+ .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,
+ .list_voltage = regulator_list_voltage_linear_range,
+ .map_voltage = regulator_map_voltage_linear_range,
+ .set_voltage_time_sel = regulator_set_voltage_time_sel,
+
+};
+
+/* Operations permitted on LDO1/2/3 */
+static const struct regulator_ops tps6594_ldos_1_2_3_ops = {
+ .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,
+ .list_voltage = regulator_list_voltage_linear_range,
+ .map_voltage = regulator_map_voltage_linear_range,
+ .set_bypass = regulator_set_bypass_regmap,
+ .get_bypass = regulator_get_bypass_regmap,
+};
+
+/* Operations permitted on LDO4 */
+static const struct regulator_ops tps6594_ldos_4_ops = {
+ .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,
+ .list_voltage = regulator_list_voltage_linear_range,
+ .map_voltage = regulator_map_voltage_linear_range,
+};
+
+static const struct regulator_desc buck_regs[] = {
+ TPS6594_REGULATOR("BUCK1", "buck1", TPS6594_BUCK_1,
+ REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
+ TPS6594_REG_BUCKX_VOUT_1(0),
+ TPS6594_MASK_BUCKS_VSET,
+ TPS6594_REG_BUCKX_CTRL(0),
+ TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges,
+ 4, 0, 0, NULL, 0, 0),
+ TPS6594_REGULATOR("BUCK2", "buck2", TPS6594_BUCK_2,
+ REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
+ TPS6594_REG_BUCKX_VOUT_1(1),
+ TPS6594_MASK_BUCKS_VSET,
+ TPS6594_REG_BUCKX_CTRL(1),
+ TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges,
+ 4, 0, 0, NULL, 0, 0),
+ TPS6594_REGULATOR("BUCK3", "buck3", TPS6594_BUCK_3,
+ REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
+ TPS6594_REG_BUCKX_VOUT_1(2),
+ TPS6594_MASK_BUCKS_VSET,
+ TPS6594_REG_BUCKX_CTRL(2),
+ TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges,
+ 4, 0, 0, NULL, 0, 0),
+ TPS6594_REGULATOR("BUCK4", "buck4", TPS6594_BUCK_4,
+ REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
+ TPS6594_REG_BUCKX_VOUT_1(3),
+ TPS6594_MASK_BUCKS_VSET,
+ TPS6594_REG_BUCKX_CTRL(3),
+ TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges,
+ 4, 0, 0, NULL, 0, 0),
+ TPS6594_REGULATOR("BUCK5", "buck5", TPS6594_BUCK_5,
+ REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
+ TPS6594_REG_BUCKX_VOUT_1(4),
+ TPS6594_MASK_BUCKS_VSET,
+ TPS6594_REG_BUCKX_CTRL(4),
+ TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges,
+ 4, 0, 0, NULL, 0, 0),
+};
+
+static struct tps6594_regulator_irq_type tps6594_buck1_irq_types[] = {
+ { TPS6594_IRQ_NAME_BUCK1_OV, "BUCK1", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
+ { TPS6594_IRQ_NAME_BUCK1_UV, "BUCK1", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
+ { TPS6594_IRQ_NAME_BUCK1_SC, "BUCK1", "short circuit", REGULATOR_EVENT_REGULATION_OUT },
+ { TPS6594_IRQ_NAME_BUCK1_ILIM, "BUCK1", "reach ilim, overcurrent",
+ REGULATOR_EVENT_OVER_CURRENT },
+};
+
+static struct tps6594_regulator_irq_type tps6594_buck2_irq_types[] = {
+ { TPS6594_IRQ_NAME_BUCK2_OV, "BUCK2", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
+ { TPS6594_IRQ_NAME_BUCK2_UV, "BUCK2", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
+ { TPS6594_IRQ_NAME_BUCK2_SC, "BUCK2", "short circuit", REGULATOR_EVENT_REGULATION_OUT },
+ { TPS6594_IRQ_NAME_BUCK2_ILIM, "BUCK2", "reach ilim, overcurrent",
+ REGULATOR_EVENT_OVER_CURRENT },
+};
+
+static struct tps6594_regulator_irq_type tps6594_buck3_irq_types[] = {
+ { TPS6594_IRQ_NAME_BUCK3_OV, "BUCK3", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
+ { TPS6594_IRQ_NAME_BUCK3_UV, "BUCK3", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
+ { TPS6594_IRQ_NAME_BUCK3_SC, "BUCK3", "short circuit", REGULATOR_EVENT_REGULATION_OUT },
+ { TPS6594_IRQ_NAME_BUCK3_ILIM, "BUCK3", "reach ilim, overcurrent",
+ REGULATOR_EVENT_OVER_CURRENT },
+};
+
+static struct tps6594_regulator_irq_type tps6594_buck4_irq_types[] = {
+ { TPS6594_IRQ_NAME_BUCK4_OV, "BUCK4", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
+ { TPS6594_IRQ_NAME_BUCK4_UV, "BUCK4", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
+ { TPS6594_IRQ_NAME_BUCK4_SC, "BUCK4", "short circuit", REGULATOR_EVENT_REGULATION_OUT },
+ { TPS6594_IRQ_NAME_BUCK4_ILIM, "BUCK4", "reach ilim, overcurrent",
+ REGULATOR_EVENT_OVER_CURRENT },
+};
+
+static struct tps6594_regulator_irq_type tps6594_buck5_irq_types[] = {
+ { TPS6594_IRQ_NAME_BUCK5_OV, "BUCK5", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
+ { TPS6594_IRQ_NAME_BUCK5_UV, "BUCK5", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
+ { TPS6594_IRQ_NAME_BUCK5_SC, "BUCK5", "short circuit", REGULATOR_EVENT_REGULATION_OUT },
+ { TPS6594_IRQ_NAME_BUCK5_ILIM, "BUCK5", "reach ilim, overcurrent",
+ REGULATOR_EVENT_OVER_CURRENT },
+};
+
+static struct tps6594_regulator_irq_type tps6594_ldo1_irq_types[] = {
+ { TPS6594_IRQ_NAME_LDO1_OV, "LDO1", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
+ { TPS6594_IRQ_NAME_LDO1_UV, "LDO1", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
+ { TPS6594_IRQ_NAME_LDO1_SC, "LDO1", "short circuit", REGULATOR_EVENT_REGULATION_OUT },
+ { TPS6594_IRQ_NAME_LDO1_ILIM, "LDO1", "reach ilim, overcurrent",
+ REGULATOR_EVENT_OVER_CURRENT },
+};
+
+static struct tps6594_regulator_irq_type tps6594_ldo2_irq_types[] = {
+ { TPS6594_IRQ_NAME_LDO2_OV, "LDO2", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
+ { TPS6594_IRQ_NAME_LDO2_UV, "LDO2", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
+ { TPS6594_IRQ_NAME_LDO2_SC, "LDO2", "short circuit", REGULATOR_EVENT_REGULATION_OUT },
+ { TPS6594_IRQ_NAME_LDO2_ILIM, "LDO2", "reach ilim, overcurrent",
+ REGULATOR_EVENT_OVER_CURRENT },
+};
+
+static struct tps6594_regulator_irq_type tps6594_ldo3_irq_types[] = {
+ { TPS6594_IRQ_NAME_LDO3_OV, "LDO3", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
+ { TPS6594_IRQ_NAME_LDO3_UV, "LDO3", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
+ { TPS6594_IRQ_NAME_LDO3_SC, "LDO3", "short circuit", REGULATOR_EVENT_REGULATION_OUT },
+ { TPS6594_IRQ_NAME_LDO3_ILIM, "LDO3", "reach ilim, overcurrent",
+ REGULATOR_EVENT_OVER_CURRENT },
+};
+
+static struct tps6594_regulator_irq_type tps6594_ldo4_irq_types[] = {
+ { TPS6594_IRQ_NAME_LDO4_OV, "LDO4", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
+ { TPS6594_IRQ_NAME_LDO4_UV, "LDO4", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
+ { TPS6594_IRQ_NAME_LDO4_SC, "LDO4", "short circuit", REGULATOR_EVENT_REGULATION_OUT },
+ { TPS6594_IRQ_NAME_LDO4_ILIM, "LDO4", "reach ilim, overcurrent",
+ REGULATOR_EVENT_OVER_CURRENT },
+};
+
+static struct tps6594_regulator_irq_type *tps6594_bucks_irq_types[] = {
+ tps6594_buck1_irq_types,
+ tps6594_buck2_irq_types,
+ tps6594_buck3_irq_types,
+ tps6594_buck4_irq_types,
+ tps6594_buck5_irq_types,
+};
+
+static struct tps6594_regulator_irq_type *tps6594_ldos_irq_types[] = {
+ tps6594_ldo1_irq_types,
+ tps6594_ldo2_irq_types,
+ tps6594_ldo3_irq_types,
+ tps6594_ldo4_irq_types,
+};
+
+static const struct regulator_desc multi_regs[] = {
+ TPS6594_REGULATOR("BUCK12", "buck12", TPS6594_BUCK_1,
+ REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
+ TPS6594_REG_BUCKX_VOUT_1(1),
+ TPS6594_MASK_BUCKS_VSET,
+ TPS6594_REG_BUCKX_CTRL(1),
+ TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges,
+ 4, 4000, 0, NULL, 0, 0),
+ TPS6594_REGULATOR("BUCK34", "buck34", TPS6594_BUCK_3,
+ REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
+ TPS6594_REG_BUCKX_VOUT_1(3),
+ TPS6594_MASK_BUCKS_VSET,
+ TPS6594_REG_BUCKX_CTRL(3),
+ TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges,
+ 4, 0, 0, NULL, 0, 0),
+ TPS6594_REGULATOR("BUCK123", "buck123", TPS6594_BUCK_1,
+ REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
+ TPS6594_REG_BUCKX_VOUT_1(1),
+ TPS6594_MASK_BUCKS_VSET,
+ TPS6594_REG_BUCKX_CTRL(1),
+ TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges,
+ 4, 4000, 0, NULL, 0, 0),
+ TPS6594_REGULATOR("BUCK1234", "buck1234", TPS6594_BUCK_1,
+ REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
+ TPS6594_REG_BUCKX_VOUT_1(1),
+ TPS6594_MASK_BUCKS_VSET,
+ TPS6594_REG_BUCKX_CTRL(1),
+ TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges,
+ 4, 4000, 0, NULL, 0, 0),
+};
+
+static const struct regulator_desc ldo_regs[] = {
+ TPS6594_REGULATOR("LDO1", "ldo1", TPS6594_LDO_1,
+ REGULATOR_VOLTAGE, tps6594_ldos_1_2_3_ops, TPS6594_MASK_LDO123_VSET,
+ TPS6594_REG_LDOX_VOUT(0),
+ TPS6594_MASK_LDO123_VSET,
+ TPS6594_REG_LDOX_CTRL(0),
+ TPS6594_BIT_LDO_EN, 0, 0, ldos_1_2_3_ranges,
+ 1, 0, 0, NULL, 0, TPS6594_BIT_LDO_BYPASS),
+ TPS6594_REGULATOR("LDO2", "ldo2", TPS6594_LDO_2,
+ REGULATOR_VOLTAGE, tps6594_ldos_1_2_3_ops, TPS6594_MASK_LDO123_VSET,
+ TPS6594_REG_LDOX_VOUT(1),
+ TPS6594_MASK_LDO123_VSET,
+ TPS6594_REG_LDOX_CTRL(1),
+ TPS6594_BIT_LDO_EN, 0, 0, ldos_1_2_3_ranges,
+ 1, 0, 0, NULL, 0, TPS6594_BIT_LDO_BYPASS),
+ TPS6594_REGULATOR("LDO3", "ldo3", TPS6594_LDO_3,
+ REGULATOR_VOLTAGE, tps6594_ldos_1_2_3_ops, TPS6594_MASK_LDO123_VSET,
+ TPS6594_REG_LDOX_VOUT(2),
+ TPS6594_MASK_LDO123_VSET,
+ TPS6594_REG_LDOX_CTRL(2),
+ TPS6594_BIT_LDO_EN, 0, 0, ldos_1_2_3_ranges,
+ 1, 0, 0, NULL, 0, TPS6594_BIT_LDO_BYPASS),
+ TPS6594_REGULATOR("LDO4", "ldo4", TPS6594_LDO_4,
+ REGULATOR_VOLTAGE, tps6594_ldos_4_ops, TPS6594_MASK_LDO4_VSET >> 1,
+ TPS6594_REG_LDOX_VOUT(3),
+ TPS6594_MASK_LDO4_VSET,
+ TPS6594_REG_LDOX_CTRL(3),
+ TPS6594_BIT_LDO_EN, 0, 0, ldos_4_ranges,
+ 1, 0, 0, NULL, 0, 0),
+};
+
+static irqreturn_t tps6594_regulator_irq_handler(int irq, void *data)
+{
+ struct tps6594_regulator_irq_data *irq_data = data;
+
+ if (irq_data->type->event_name[0] == '\0') {
+ /* This is the timeout interrupt no specific regulator */
+ dev_err(irq_data->dev,
+ "System was put in shutdown due to timeout during an active or standby transition.\n");
+ return IRQ_HANDLED;
+ }
+
+ dev_err(irq_data->dev, "Error IRQ trap %s for %s\n",
+ irq_data->type->event_name, irq_data->type->regulator_name);
+
+ regulator_notifier_call_chain(irq_data->rdev,
+ irq_data->type->event, NULL);
+
+ return IRQ_HANDLED;
+}
+
+static int tps6594_request_reg_irqs(struct platform_device *pdev,
+ struct regulator_dev *rdev,
+ struct tps6594_regulator_irq_data *irq_data,
+ struct tps6594_regulator_irq_type *tps6594_regs_irq_types,
+ int *irq_idx)
+{
+ struct tps6594_regulator_irq_type *irq_type;
+ struct tps6594 *tps = dev_get_drvdata(pdev->dev.parent);
+ int j;
+ int irq;
+ int error;
+
+ for (j = 0; j < REGS_INT_NB; j++) {
+ irq_type = &tps6594_regs_irq_types[j];
+ irq = platform_get_irq_byname(pdev, irq_type->irq_name);
+ if (irq < 0)
+ return -EINVAL;
+
+ irq_data[*irq_idx + j].dev = tps->dev;
+ irq_data[*irq_idx + j].type = irq_type;
+ irq_data[*irq_idx + j].rdev = rdev;
+
+ error = devm_request_threaded_irq(tps->dev, irq, NULL,
+ tps6594_regulator_irq_handler,
+ IRQF_ONESHOT,
+ irq_type->irq_name,
+ &irq_data[*irq_idx]);
+ (*irq_idx)++;
+ if (error) {
+ dev_err(tps->dev, "tps6594 failed to request %s IRQ %d: %d\n",
+ irq_type->irq_name, irq, error);
+ return error;
+ }
+ }
+ return 0;
+}
+
+static int tps6594_regulator_probe(struct platform_device *pdev)
+{
+ struct tps6594 *tps = dev_get_drvdata(pdev->dev.parent);
+ struct regulator_dev *rdev;
+ struct device_node *np = NULL;
+ struct device_node *np_pmic_parent = NULL;
+ struct regulator_config config = {};
+ struct tps6594_regulator_irq_data *irq_data;
+ struct tps6594_ext_regulator_irq_data *irq_ext_reg_data;
+ struct tps6594_regulator_irq_type *irq_type;
+ u8 buck_configured[BUCK_NB] = { 0 };
+ u8 buck_multi[MULTI_PHASE_NB] = { 0 };
+ static const char * const multiphases[] = {"buck12", "buck123", "buck1234", "buck34"};
+ static const char *npname;
+ int error, i, irq, multi, delta;
+ int irq_idx = 0;
+ int buck_idx = 0;
+ int ext_reg_irq_nb = 2;
+
+ enum {
+ MULTI_BUCK12,
+ MULTI_BUCK123,
+ MULTI_BUCK1234,
+ MULTI_BUCK12_34,
+ MULTI_FIRST = MULTI_BUCK12,
+ MULTI_LAST = MULTI_BUCK12_34,
+ MULTI_NUM = MULTI_LAST - MULTI_FIRST + 1
+ };
+
+ config.dev = tps->dev;
+ config.driver_data = tps;
+ config.regmap = tps->regmap;
+
+ /*
+ * Switch case defines different possible multi phase config
+ * This is based on dts buck node name.
+ * Buck node name must be chosen accordingly.
+ * Default case is no Multiphase buck.
+ * In case of Multiphase configuration, value should be defined for
+ * buck_configured to avoid creating bucks for every buck in multiphase
+ */
+ for (multi = MULTI_FIRST; multi < MULTI_NUM; multi++) {
+ np = of_find_node_by_name(tps->dev->of_node, multiphases[multi]);
+ npname = of_node_full_name(np);
+ np_pmic_parent = of_get_parent(of_get_parent(np));
+ if (of_node_cmp(of_node_full_name(np_pmic_parent), tps->dev->of_node->full_name))
+ continue;
+ delta = strcmp(npname, multiphases[multi]);
+ if (!delta) {
+ switch (multi) {
+ case MULTI_BUCK12:
+ buck_multi[0] = 1;
+ buck_configured[0] = 1;
+ buck_configured[1] = 1;
+ break;
+ /* multiphase buck34 is supported only with buck12 */
+ case MULTI_BUCK12_34:
+ buck_multi[0] = 1;
+ buck_multi[1] = 1;
+ buck_configured[0] = 1;
+ buck_configured[1] = 1;
+ buck_configured[2] = 1;
+ buck_configured[3] = 1;
+ break;
+ case MULTI_BUCK123:
+ buck_multi[2] = 1;
+ buck_configured[0] = 1;
+ buck_configured[1] = 1;
+ buck_configured[2] = 1;
+ break;
+ case MULTI_BUCK1234:
+ buck_multi[3] = 1;
+ buck_configured[0] = 1;
+ buck_configured[1] = 1;
+ buck_configured[2] = 1;
+ buck_configured[3] = 1;
+ break;
+ }
+ }
+ }
+
+ if (tps->chip_id == LP8764)
+ /* There is only 4 buck on LP8764 */
+ buck_configured[4] = 1;
+
+ irq_data = devm_kmalloc_array(tps->dev,
+ REGS_INT_NB * sizeof(struct tps6594_regulator_irq_data),
+ ARRAY_SIZE(tps6594_bucks_irq_types) +
+ ARRAY_SIZE(tps6594_ldos_irq_types),
+ GFP_KERNEL);
+ if (!irq_data)
+ return -ENOMEM;
+
+ for (i = 0; i < MULTI_PHASE_NB; i++) {
+ if (buck_multi[i] == 0)
+ continue;
+
+ rdev = devm_regulator_register(&pdev->dev, &multi_regs[i], &config);
+ if (IS_ERR(rdev))
+ return dev_err_probe(tps->dev, PTR_ERR(rdev),
+ "failed to register %s regulator\n",
+ pdev->name);
+
+ /* config multiphase buck12+buck34 */
+ if (i == 1)
+ buck_idx = 2;
+ error = tps6594_request_reg_irqs(pdev, rdev, irq_data,
+ tps6594_bucks_irq_types[buck_idx], &irq_idx);
+ if (error)
+ return error;
+ error = tps6594_request_reg_irqs(pdev, rdev, irq_data,
+ tps6594_bucks_irq_types[buck_idx + 1], &irq_idx);
+ if (error)
+ return error;
+
+ if (i == 2 || i == 3) {
+ error = tps6594_request_reg_irqs(pdev, rdev, irq_data,
+ tps6594_bucks_irq_types[buck_idx + 2],
+ &irq_idx);
+ if (error)
+ return error;
+ }
+ if (i == 3) {
+ error = tps6594_request_reg_irqs(pdev, rdev, irq_data,
+ tps6594_bucks_irq_types[buck_idx + 3],
+ &irq_idx);
+ if (error)
+ return error;
+ }
+ }
+
+ for (i = 0; i < BUCK_NB; i++) {
+ if (buck_configured[i] == 1)
+ continue;
+
+ rdev = devm_regulator_register(&pdev->dev, &buck_regs[i], &config);
+ if (IS_ERR(rdev))
+ return dev_err_probe(tps->dev, PTR_ERR(rdev),
+ "failed to register %s regulator\n",
+ pdev->name);
+
+ error = tps6594_request_reg_irqs(pdev, rdev, irq_data,
+ tps6594_bucks_irq_types[i], &irq_idx);
+ if (error)
+ return error;
+ }
+
+ /* LP8764 dosen't have LDO */
+ if (tps->chip_id != LP8764) {
+ for (i = 0; i < ARRAY_SIZE(ldo_regs); i++) {
+ rdev = devm_regulator_register(&pdev->dev, &ldo_regs[i], &config);
+ if (IS_ERR(rdev))
+ return dev_err_probe(tps->dev, PTR_ERR(rdev),
+ "failed to register %s regulator\n",
+ pdev->name);
+
+ error = tps6594_request_reg_irqs(pdev, rdev, irq_data,
+ tps6594_ldos_irq_types[i],
+ &irq_idx);
+ if (error)
+ return error;
+ }
+ }
+
+ if (tps->chip_id == LP8764)
+ ext_reg_irq_nb = ARRAY_SIZE(tps6594_ext_regulator_irq_types);
+
+ irq_ext_reg_data = devm_kmalloc_array(tps->dev,
+ ext_reg_irq_nb,
+ sizeof(struct tps6594_ext_regulator_irq_data),
+ GFP_KERNEL);
+ if (!irq_ext_reg_data)
+ return -ENOMEM;
+
+ for (i = 0; i < ext_reg_irq_nb; ++i) {
+ irq_type = &tps6594_ext_regulator_irq_types[i];
+
+ irq = platform_get_irq_byname(pdev, irq_type->irq_name);
+ if (irq < 0)
+ return -EINVAL;
+
+ irq_ext_reg_data[i].dev = tps->dev;
+ irq_ext_reg_data[i].type = irq_type;
+
+ error = devm_request_threaded_irq(tps->dev, irq, NULL,
+ tps6594_regulator_irq_handler,
+ IRQF_ONESHOT,
+ irq_type->irq_name,
+ &irq_ext_reg_data[i]);
+ if (error)
+ return dev_err_probe(tps->dev, error,
+ "failed to request %s IRQ %d\n",
+ irq_type->irq_name, irq);
+ }
+ return 0;
+}
+
+static struct platform_driver tps6594_regulator_driver = {
+ .driver = {
+ .name = "tps6594-regulator",
+ },
+ .probe = tps6594_regulator_probe,
+};
+
+module_platform_driver(tps6594_regulator_driver);
+
+MODULE_ALIAS("platform:tps6594-regulator");
+MODULE_AUTHOR("Jerome Neanne <jneanne@baylibre.com>");
+MODULE_DESCRIPTION("TPS6594 voltage regulator driver");
+MODULE_LICENSE("GPL");
projects / users / hch / dma-mapping.git / commitdiff