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https://github.com/edk2-porting/linux-next.git
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ca0e36e3e3
Random kernel crash detected in TI CICD when regulator driver is added.
This is root caused to irq index increment being done twice causing
irq_data being allocated outside of the range.
- Rework tps6594_request_reg_irqs with correct index increment
- Adjust irq_data kmalloc size to the exact size needed for the device
This has been reported on TI mainline. No public bug report associated.
Reported-by: Udit Kumar <u-kumar1@ti.com>
Fixes: f17ccc5deb ("regulator: tps6594-regulator: Add driver for TI TPS6594 regulators")
Signed-off-by: Jerome Neanne <jneanne@baylibre.com>
Link: https://lore.kernel.org/r/20230828-tps6594_random_boot_crash_fix-v1-1-f29cbf9ddb37@baylibre.com
Signed-off-by: Mark Brown <broonie@kernel.org>
615 lines
20 KiB
C
615 lines
20 KiB
C
// SPDX-License-Identifier: GPL-2.0
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//
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// Regulator driver for tps6594 PMIC
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//
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// Copyright (C) 2023 BayLibre Incorporated - https://www.baylibre.com/
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#include <linux/device.h>
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#include <linux/err.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/platform_device.h>
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#include <linux/regmap.h>
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#include <linux/regulator/driver.h>
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#include <linux/regulator/machine.h>
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#include <linux/regulator/of_regulator.h>
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#include <linux/mfd/tps6594.h>
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#define BUCK_NB 5
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#define LDO_NB 4
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#define MULTI_PHASE_NB 4
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#define REGS_INT_NB 4
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enum tps6594_regulator_id {
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/* DCDC's */
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TPS6594_BUCK_1,
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TPS6594_BUCK_2,
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TPS6594_BUCK_3,
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TPS6594_BUCK_4,
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TPS6594_BUCK_5,
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/* LDOs */
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TPS6594_LDO_1,
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TPS6594_LDO_2,
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TPS6594_LDO_3,
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TPS6594_LDO_4,
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};
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enum tps6594_multi_regulator_id {
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/* Multi-phase DCDC's */
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TPS6594_BUCK_12,
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TPS6594_BUCK_34,
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TPS6594_BUCK_123,
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TPS6594_BUCK_1234,
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};
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struct tps6594_regulator_irq_type {
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const char *irq_name;
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const char *regulator_name;
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const char *event_name;
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unsigned long event;
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};
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static struct tps6594_regulator_irq_type tps6594_ext_regulator_irq_types[] = {
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{ TPS6594_IRQ_NAME_VCCA_OV, "VCCA", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
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{ TPS6594_IRQ_NAME_VCCA_UV, "VCCA", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
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{ TPS6594_IRQ_NAME_VMON1_OV, "VMON1", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
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{ TPS6594_IRQ_NAME_VMON1_UV, "VMON1", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
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{ TPS6594_IRQ_NAME_VMON1_RV, "VMON1", "residual voltage",
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REGULATOR_EVENT_OVER_VOLTAGE_WARN },
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{ TPS6594_IRQ_NAME_VMON2_OV, "VMON2", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
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{ TPS6594_IRQ_NAME_VMON2_UV, "VMON2", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
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{ TPS6594_IRQ_NAME_VMON2_RV, "VMON2", "residual voltage",
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REGULATOR_EVENT_OVER_VOLTAGE_WARN },
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};
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struct tps6594_regulator_irq_data {
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struct device *dev;
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struct tps6594_regulator_irq_type *type;
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struct regulator_dev *rdev;
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};
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struct tps6594_ext_regulator_irq_data {
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struct device *dev;
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struct tps6594_regulator_irq_type *type;
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};
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#define TPS6594_REGULATOR(_name, _of, _id, _type, _ops, _n, _vr, _vm, _er, \
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_em, _cr, _cm, _lr, _nlr, _delay, _fuv, \
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_ct, _ncl, _bpm) \
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{ \
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.name = _name, \
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.of_match = _of, \
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.regulators_node = of_match_ptr("regulators"), \
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.supply_name = _of, \
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.id = _id, \
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.ops = &(_ops), \
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.n_voltages = _n, \
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.type = _type, \
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.owner = THIS_MODULE, \
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.vsel_reg = _vr, \
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.vsel_mask = _vm, \
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.csel_reg = _cr, \
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.csel_mask = _cm, \
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.curr_table = _ct, \
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.n_current_limits = _ncl, \
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.enable_reg = _er, \
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.enable_mask = _em, \
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.volt_table = NULL, \
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.linear_ranges = _lr, \
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.n_linear_ranges = _nlr, \
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.ramp_delay = _delay, \
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.fixed_uV = _fuv, \
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.bypass_reg = _vr, \
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.bypass_mask = _bpm, \
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} \
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static const struct linear_range bucks_ranges[] = {
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REGULATOR_LINEAR_RANGE(300000, 0x0, 0xe, 20000),
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REGULATOR_LINEAR_RANGE(600000, 0xf, 0x72, 5000),
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REGULATOR_LINEAR_RANGE(1100000, 0x73, 0xaa, 10000),
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REGULATOR_LINEAR_RANGE(1660000, 0xab, 0xff, 20000),
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};
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static const struct linear_range ldos_1_2_3_ranges[] = {
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REGULATOR_LINEAR_RANGE(600000, 0x4, 0x3a, 50000),
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};
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static const struct linear_range ldos_4_ranges[] = {
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REGULATOR_LINEAR_RANGE(1200000, 0x20, 0x74, 25000),
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};
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/* Operations permitted on BUCK1/2/3/4/5 */
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static const struct regulator_ops tps6594_bucks_ops = {
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.is_enabled = regulator_is_enabled_regmap,
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.enable = regulator_enable_regmap,
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.disable = regulator_disable_regmap,
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.get_voltage_sel = regulator_get_voltage_sel_regmap,
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.set_voltage_sel = regulator_set_voltage_sel_regmap,
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.list_voltage = regulator_list_voltage_linear_range,
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.map_voltage = regulator_map_voltage_linear_range,
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.set_voltage_time_sel = regulator_set_voltage_time_sel,
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};
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/* Operations permitted on LDO1/2/3 */
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static const struct regulator_ops tps6594_ldos_1_2_3_ops = {
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.is_enabled = regulator_is_enabled_regmap,
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.enable = regulator_enable_regmap,
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.disable = regulator_disable_regmap,
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.get_voltage_sel = regulator_get_voltage_sel_regmap,
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.set_voltage_sel = regulator_set_voltage_sel_regmap,
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.list_voltage = regulator_list_voltage_linear_range,
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.map_voltage = regulator_map_voltage_linear_range,
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.set_bypass = regulator_set_bypass_regmap,
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.get_bypass = regulator_get_bypass_regmap,
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};
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/* Operations permitted on LDO4 */
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static const struct regulator_ops tps6594_ldos_4_ops = {
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.is_enabled = regulator_is_enabled_regmap,
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.enable = regulator_enable_regmap,
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.disable = regulator_disable_regmap,
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.get_voltage_sel = regulator_get_voltage_sel_regmap,
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.set_voltage_sel = regulator_set_voltage_sel_regmap,
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.list_voltage = regulator_list_voltage_linear_range,
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.map_voltage = regulator_map_voltage_linear_range,
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};
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static const struct regulator_desc buck_regs[] = {
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TPS6594_REGULATOR("BUCK1", "buck1", TPS6594_BUCK_1,
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REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
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TPS6594_REG_BUCKX_VOUT_1(0),
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TPS6594_MASK_BUCKS_VSET,
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TPS6594_REG_BUCKX_CTRL(0),
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TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges,
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4, 0, 0, NULL, 0, 0),
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TPS6594_REGULATOR("BUCK2", "buck2", TPS6594_BUCK_2,
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REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
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TPS6594_REG_BUCKX_VOUT_1(1),
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TPS6594_MASK_BUCKS_VSET,
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TPS6594_REG_BUCKX_CTRL(1),
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TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges,
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4, 0, 0, NULL, 0, 0),
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TPS6594_REGULATOR("BUCK3", "buck3", TPS6594_BUCK_3,
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REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
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TPS6594_REG_BUCKX_VOUT_1(2),
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TPS6594_MASK_BUCKS_VSET,
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TPS6594_REG_BUCKX_CTRL(2),
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TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges,
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4, 0, 0, NULL, 0, 0),
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TPS6594_REGULATOR("BUCK4", "buck4", TPS6594_BUCK_4,
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REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
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TPS6594_REG_BUCKX_VOUT_1(3),
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TPS6594_MASK_BUCKS_VSET,
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TPS6594_REG_BUCKX_CTRL(3),
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TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges,
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4, 0, 0, NULL, 0, 0),
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TPS6594_REGULATOR("BUCK5", "buck5", TPS6594_BUCK_5,
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REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
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TPS6594_REG_BUCKX_VOUT_1(4),
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TPS6594_MASK_BUCKS_VSET,
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TPS6594_REG_BUCKX_CTRL(4),
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TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges,
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4, 0, 0, NULL, 0, 0),
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};
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static struct tps6594_regulator_irq_type tps6594_buck1_irq_types[] = {
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{ TPS6594_IRQ_NAME_BUCK1_OV, "BUCK1", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
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{ TPS6594_IRQ_NAME_BUCK1_UV, "BUCK1", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
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{ TPS6594_IRQ_NAME_BUCK1_SC, "BUCK1", "short circuit", REGULATOR_EVENT_REGULATION_OUT },
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{ TPS6594_IRQ_NAME_BUCK1_ILIM, "BUCK1", "reach ilim, overcurrent",
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REGULATOR_EVENT_OVER_CURRENT },
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};
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static struct tps6594_regulator_irq_type tps6594_buck2_irq_types[] = {
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{ TPS6594_IRQ_NAME_BUCK2_OV, "BUCK2", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
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{ TPS6594_IRQ_NAME_BUCK2_UV, "BUCK2", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
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{ TPS6594_IRQ_NAME_BUCK2_SC, "BUCK2", "short circuit", REGULATOR_EVENT_REGULATION_OUT },
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{ TPS6594_IRQ_NAME_BUCK2_ILIM, "BUCK2", "reach ilim, overcurrent",
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REGULATOR_EVENT_OVER_CURRENT },
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};
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static struct tps6594_regulator_irq_type tps6594_buck3_irq_types[] = {
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{ TPS6594_IRQ_NAME_BUCK3_OV, "BUCK3", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
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{ TPS6594_IRQ_NAME_BUCK3_UV, "BUCK3", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
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{ TPS6594_IRQ_NAME_BUCK3_SC, "BUCK3", "short circuit", REGULATOR_EVENT_REGULATION_OUT },
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{ TPS6594_IRQ_NAME_BUCK3_ILIM, "BUCK3", "reach ilim, overcurrent",
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REGULATOR_EVENT_OVER_CURRENT },
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};
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static struct tps6594_regulator_irq_type tps6594_buck4_irq_types[] = {
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{ TPS6594_IRQ_NAME_BUCK4_OV, "BUCK4", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
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{ TPS6594_IRQ_NAME_BUCK4_UV, "BUCK4", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
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{ TPS6594_IRQ_NAME_BUCK4_SC, "BUCK4", "short circuit", REGULATOR_EVENT_REGULATION_OUT },
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{ TPS6594_IRQ_NAME_BUCK4_ILIM, "BUCK4", "reach ilim, overcurrent",
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REGULATOR_EVENT_OVER_CURRENT },
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};
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static struct tps6594_regulator_irq_type tps6594_buck5_irq_types[] = {
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{ TPS6594_IRQ_NAME_BUCK5_OV, "BUCK5", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
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{ TPS6594_IRQ_NAME_BUCK5_UV, "BUCK5", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
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{ TPS6594_IRQ_NAME_BUCK5_SC, "BUCK5", "short circuit", REGULATOR_EVENT_REGULATION_OUT },
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{ TPS6594_IRQ_NAME_BUCK5_ILIM, "BUCK5", "reach ilim, overcurrent",
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REGULATOR_EVENT_OVER_CURRENT },
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};
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static struct tps6594_regulator_irq_type tps6594_ldo1_irq_types[] = {
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{ TPS6594_IRQ_NAME_LDO1_OV, "LDO1", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
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{ TPS6594_IRQ_NAME_LDO1_UV, "LDO1", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
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{ TPS6594_IRQ_NAME_LDO1_SC, "LDO1", "short circuit", REGULATOR_EVENT_REGULATION_OUT },
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{ TPS6594_IRQ_NAME_LDO1_ILIM, "LDO1", "reach ilim, overcurrent",
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REGULATOR_EVENT_OVER_CURRENT },
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};
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static struct tps6594_regulator_irq_type tps6594_ldo2_irq_types[] = {
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{ TPS6594_IRQ_NAME_LDO2_OV, "LDO2", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
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{ TPS6594_IRQ_NAME_LDO2_UV, "LDO2", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
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{ TPS6594_IRQ_NAME_LDO2_SC, "LDO2", "short circuit", REGULATOR_EVENT_REGULATION_OUT },
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{ TPS6594_IRQ_NAME_LDO2_ILIM, "LDO2", "reach ilim, overcurrent",
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REGULATOR_EVENT_OVER_CURRENT },
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};
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static struct tps6594_regulator_irq_type tps6594_ldo3_irq_types[] = {
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{ TPS6594_IRQ_NAME_LDO3_OV, "LDO3", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
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{ TPS6594_IRQ_NAME_LDO3_UV, "LDO3", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
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{ TPS6594_IRQ_NAME_LDO3_SC, "LDO3", "short circuit", REGULATOR_EVENT_REGULATION_OUT },
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{ TPS6594_IRQ_NAME_LDO3_ILIM, "LDO3", "reach ilim, overcurrent",
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REGULATOR_EVENT_OVER_CURRENT },
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};
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static struct tps6594_regulator_irq_type tps6594_ldo4_irq_types[] = {
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{ TPS6594_IRQ_NAME_LDO4_OV, "LDO4", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
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{ TPS6594_IRQ_NAME_LDO4_UV, "LDO4", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
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{ TPS6594_IRQ_NAME_LDO4_SC, "LDO4", "short circuit", REGULATOR_EVENT_REGULATION_OUT },
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{ TPS6594_IRQ_NAME_LDO4_ILIM, "LDO4", "reach ilim, overcurrent",
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REGULATOR_EVENT_OVER_CURRENT },
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};
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static struct tps6594_regulator_irq_type *tps6594_bucks_irq_types[] = {
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tps6594_buck1_irq_types,
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tps6594_buck2_irq_types,
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tps6594_buck3_irq_types,
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tps6594_buck4_irq_types,
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tps6594_buck5_irq_types,
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};
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static struct tps6594_regulator_irq_type *tps6594_ldos_irq_types[] = {
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tps6594_ldo1_irq_types,
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tps6594_ldo2_irq_types,
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tps6594_ldo3_irq_types,
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tps6594_ldo4_irq_types,
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};
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static const struct regulator_desc multi_regs[] = {
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TPS6594_REGULATOR("BUCK12", "buck12", TPS6594_BUCK_1,
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REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
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TPS6594_REG_BUCKX_VOUT_1(1),
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TPS6594_MASK_BUCKS_VSET,
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TPS6594_REG_BUCKX_CTRL(1),
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TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges,
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4, 4000, 0, NULL, 0, 0),
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TPS6594_REGULATOR("BUCK34", "buck34", TPS6594_BUCK_3,
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REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
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TPS6594_REG_BUCKX_VOUT_1(3),
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TPS6594_MASK_BUCKS_VSET,
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TPS6594_REG_BUCKX_CTRL(3),
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TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges,
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4, 0, 0, NULL, 0, 0),
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TPS6594_REGULATOR("BUCK123", "buck123", TPS6594_BUCK_1,
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REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
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TPS6594_REG_BUCKX_VOUT_1(1),
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TPS6594_MASK_BUCKS_VSET,
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TPS6594_REG_BUCKX_CTRL(1),
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TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges,
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4, 4000, 0, NULL, 0, 0),
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TPS6594_REGULATOR("BUCK1234", "buck1234", TPS6594_BUCK_1,
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REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
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TPS6594_REG_BUCKX_VOUT_1(1),
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TPS6594_MASK_BUCKS_VSET,
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TPS6594_REG_BUCKX_CTRL(1),
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TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges,
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4, 4000, 0, NULL, 0, 0),
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};
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static const struct regulator_desc ldo_regs[] = {
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TPS6594_REGULATOR("LDO1", "ldo1", TPS6594_LDO_1,
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REGULATOR_VOLTAGE, tps6594_ldos_1_2_3_ops, TPS6594_MASK_LDO123_VSET,
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TPS6594_REG_LDOX_VOUT(0),
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TPS6594_MASK_LDO123_VSET,
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TPS6594_REG_LDOX_CTRL(0),
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TPS6594_BIT_LDO_EN, 0, 0, ldos_1_2_3_ranges,
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1, 0, 0, NULL, 0, TPS6594_BIT_LDO_BYPASS),
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TPS6594_REGULATOR("LDO2", "ldo2", TPS6594_LDO_2,
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REGULATOR_VOLTAGE, tps6594_ldos_1_2_3_ops, TPS6594_MASK_LDO123_VSET,
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TPS6594_REG_LDOX_VOUT(1),
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TPS6594_MASK_LDO123_VSET,
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TPS6594_REG_LDOX_CTRL(1),
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TPS6594_BIT_LDO_EN, 0, 0, ldos_1_2_3_ranges,
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1, 0, 0, NULL, 0, TPS6594_BIT_LDO_BYPASS),
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TPS6594_REGULATOR("LDO3", "ldo3", TPS6594_LDO_3,
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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].dev = tps->dev;
|
|
irq_data[*irq_idx].type = irq_type;
|
|
irq_data[*irq_idx].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]);
|
|
if (error) {
|
|
dev_err(tps->dev, "tps6594 failed to request %s IRQ %d: %d\n",
|
|
irq_type->irq_name, irq, error);
|
|
return error;
|
|
}
|
|
(*irq_idx)++;
|
|
}
|
|
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;
|
|
size_t ext_reg_irq_nb = 2;
|
|
size_t reg_irq_nb;
|
|
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;
|
|
reg_irq_nb = size_mul(REGS_INT_NB, (BUCK_NB - 1));
|
|
} else {
|
|
reg_irq_nb = size_mul(REGS_INT_NB, (size_add(BUCK_NB, LDO_NB)));
|
|
}
|
|
|
|
irq_data = devm_kmalloc_array(tps->dev, reg_irq_nb,
|
|
sizeof(struct tps6594_regulator_irq_data), 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");
|