* [RFC PATCH 2/5] mfd: drivers: Add TI TPS65219 PMIC support
2022-06-13 9:05 [RFC PATCH 0/5] Add TI TPS65219 PMIC support for AM642 SK board Jerome NEANNE
2022-06-13 9:06 ` [RFC PATCH 1/5] regulator: dt-bindings: Add TI TPS65219 PMIC bindings Jerome NEANNE
@ 2022-06-13 9:06 ` Jerome NEANNE
2022-06-13 12:57 ` Mark Brown
2022-06-14 21:03 ` Kevin Hilman
2022-06-13 9:06 ` [RFC PATCH 3/5] regulator: drivers: Add TI TPS65219 PMIC regulators support Jerome NEANNE
` (2 subsequent siblings)
4 siblings, 2 replies; 11+ messages in thread
From: Jerome NEANNE @ 2022-06-13 9:06 UTC (permalink / raw)
To: lgirdwood, broonie, robh+dt, nm, kristo, will, lee.jones, jneanne
Cc: khilman, narmstrong, msp, j-keerthy, linux-kernel, devicetree,
linux-arm-kernel
The TPS65219 is a power management IC PMIC designed
to supply a wide range of SoCs
in both portable and stationary applications.
Any SoC can control TPS65219 over a standard I2C interface.
It contains the following components:
- Regulators.
- Over Temperature warning and Shut down.
- GPIOs
- Multi Function Pins (MFP)
This patch adds support for tps65219 mfd device. At this time only
the functionalities listed below are made available:
- Regulators probe and functionalities
- warm and cold reset support
- SW shutdown support
Signed-off-by: Jerome NEANNE <jneanne@baylibre.com>
---
drivers/mfd/Kconfig | 15 ++
drivers/mfd/Makefile | 1 +
drivers/mfd/tps65219.c | 296 +++++++++++++++++++++++++++++++++++
include/linux/mfd/tps65219.h | 245 +++++++++++++++++++++++++++++
4 files changed, 557 insertions(+)
create mode 100644 drivers/mfd/tps65219.c
create mode 100644 include/linux/mfd/tps65219.h
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 6a3fd2d75f96..f8639b7b034b 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -1555,6 +1555,21 @@ config MFD_TPS65218
This driver can also be built as a module. If so, the module
will be called tps65218.
+config MFD_TPS65219
+ tristate "TI TPS65219 Power Management chips"
+ depends on I2C && OF
+ select MFD_CORE
+ select REGMAP_I2C
+ select REGMAP_IRQ
+ help
+ If you say yes here you get support for the TPS65219 series of
+ Power Management chips.
+ These include voltage regulators, gpio and other features
+ that are often used in portable devices.
+
+ This driver can also be built as a module. If so, the module
+ will be called tps65219.
+
config MFD_TPS6586X
bool "TI TPS6586x Power Management chips"
depends on I2C=y
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index 8116c19d5fd4..11bce3e134f4 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -101,6 +101,7 @@ obj-$(CONFIG_TPS6507X) += tps6507x.o
obj-$(CONFIG_MFD_TPS65086) += tps65086.o
obj-$(CONFIG_MFD_TPS65217) += tps65217.o
obj-$(CONFIG_MFD_TPS65218) += tps65218.o
+obj-$(CONFIG_MFD_TPS65219) += tps65219.o
obj-$(CONFIG_MFD_TPS65910) += tps65910.o
obj-$(CONFIG_MFD_TPS65912) += tps65912-core.o
obj-$(CONFIG_MFD_TPS65912_I2C) += tps65912-i2c.o
diff --git a/drivers/mfd/tps65219.c b/drivers/mfd/tps65219.c
new file mode 100644
index 000000000000..b8e8115da555
--- /dev/null
+++ b/drivers/mfd/tps65219.c
@@ -0,0 +1,296 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Driver for TPS65219 Integrated power management chipsets
+ *
+ * Copyright (C) 2022 BayLibre Incorporated - https://www.baylibre.com/
+ */
+
+/* This implementation derived from tps65218 authored by "J Keerthy <j-keerthy@ti.com>" */
+
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/init.h>
+#include <linux/i2c.h>
+#include <linux/slab.h>
+#include <linux/regmap.h>
+#include <linux/err.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/irq.h>
+#include <linux/interrupt.h>
+#include <linux/mutex.h>
+#include <linux/reboot.h>
+
+#include <linux/mfd/core.h>
+#include <linux/mfd/tps65219.h>
+
+
+/**
+ * pmic_rst_restart: trig tps65219 reset to SOC.
+ *
+ * Trigged via notifier
+ */
+static int pmic_rst_restart(struct notifier_block *this,
+ unsigned long mode, void *cmd)
+{
+ struct tps65219 *tps;
+
+ tps = container_of(this, struct tps65219, nb);
+ if (tps != NULL) {
+ if (WARMNCOLD)
+ tps65219_warm_reset(tps);
+ else
+ tps65219_cold_reset(tps);
+ } else {
+ pr_err("%s: pointer to tps65219 is invalid\n", __func__);
+ return -ENODEV;
+ }
+ return NOTIFY_DONE;
+}
+
+static struct i2c_client *tps65219_i2c_client;
+/**
+ * pmic_poweroff: trig tps65219 regulators power OFF sequence.
+ */
+static void pmic_poweroff_do_poweroff(void)
+{
+ struct tps65219 *tps;
+
+ tps = dev_get_drvdata(&tps65219_i2c_client->dev);
+ tps65219_soft_shutdown(tps);
+
+}
+
+static struct notifier_block pmic_rst_restart_nb = {
+ .notifier_call = pmic_rst_restart,
+};
+
+static const struct mfd_cell tps65219_cells[] = {
+ { .name = "tps65219-regulator", },
+};
+
+/**
+ * tps65219_reg_read: Read a single tps65219 register.
+ *
+ * @tps: Device to read from.
+ * @reg: Register to read.
+ * @val: Contians the value
+ */
+int tps65219_reg_read(struct tps65219 *tps, unsigned int reg,
+ unsigned int *val)
+{
+ return regmap_read(tps->regmap, reg, val);
+}
+EXPORT_SYMBOL_GPL(tps65219_reg_read);
+
+/**
+ * tps65219_reg_write: Write a single tps65219 register.
+ *
+ * @tps: Device to write to.
+ * @reg: Register to write to.
+ * @val: Value to write.
+ */
+int tps65219_reg_write(struct tps65219 *tps, unsigned int reg,
+ unsigned int val)
+{
+ return regmap_write(tps->regmap, reg, val);
+}
+EXPORT_SYMBOL_GPL(tps65219_reg_write);
+
+/**
+ * tps65219_update_bits: Modify bits w.r.t mask, val and level.
+ *
+ * @tps: Device to write to.
+ * @reg: Register to read-write to.
+ * @mask: Mask.
+ * @val: Value to write.
+ */
+static int tps65219_update_bits(struct tps65219 *tps, unsigned int reg,
+ unsigned int mask, unsigned int val)
+{
+ int ret;
+ unsigned int data;
+
+ ret = regmap_read(tps->regmap, reg, &data);
+ if (ret) {
+ dev_err(tps->dev, "Read from reg 0x%x failed\n", reg);
+ return ret;
+ }
+
+ data &= ~mask;
+ data |= val & mask;
+
+ mutex_lock(&tps->tps_lock);
+ ret = tps65219_reg_write(tps, reg, data);
+ if (ret)
+ dev_err(tps->dev, "Write for reg 0x%x failed\n", reg);
+ mutex_unlock(&tps->tps_lock);
+
+ return ret;
+}
+
+int tps65219_set_bits(struct tps65219 *tps, unsigned int reg,
+ unsigned int mask, unsigned int val)
+{
+ return tps65219_update_bits(tps, reg, mask, val);
+}
+EXPORT_SYMBOL_GPL(tps65219_set_bits);
+
+int tps65219_clear_bits(struct tps65219 *tps, unsigned int reg,
+ unsigned int mask)
+{
+ return tps65219_update_bits(tps, reg, mask, 0);
+}
+EXPORT_SYMBOL_GPL(tps65219_clear_bits);
+
+/**
+ * tps65219_warm_reset: issue warm reset to SOC.
+ *
+ * @tps: Device to write to.
+ */
+int tps65219_warm_reset(struct tps65219 *tps)
+{
+ int ret;
+
+ dev_dbg(tps->dev, "warm reset");
+ ret = tps65219_set_bits(tps, TPS65219_REG_MFP_CTRL, TPS65219_MFP_WARM_RESET_I2C_CTRL,
+ TPS65219_MFP_WARM_RESET_I2C_CTRL);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(tps65219_warm_reset);
+
+/**
+ * tps65219_cold_reset: issue cold reset to SOC.
+ *
+ * @tps: Device to write to.
+ */
+int tps65219_cold_reset(struct tps65219 *tps)
+{
+ int ret;
+
+ dev_dbg(tps->dev, "cold reset generation");
+ ret = tps65219_set_bits(tps, TPS65219_REG_MFP_CTRL, TPS65219_MFP_COLD_RESET_I2C_CTRL,
+ TPS65219_MFP_COLD_RESET_I2C_CTRL);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(tps65219_cold_reset);
+
+/**
+ * tps65219_soft_shutdown: issue cold reset to SOC.
+ *
+ * @tps: Device to write to.
+ */
+int tps65219_soft_shutdown(struct tps65219 *tps)
+{
+ int ret;
+
+ dev_dbg(tps->dev, "software shutdown");
+ ret = tps65219_set_bits(tps, TPS65219_REG_MFP_CTRL, TPS65219_MFP_I2C_OFF_REQ,
+ TPS65219_MFP_I2C_OFF_REQ);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(tps65219_soft_shutdown);
+
+static const struct regmap_range tps65219_yes_ranges[] = {
+ regmap_reg_range(TPS65219_REG_INT_SOURCE, TPS65219_REG_POWER_UP_STATUS),
+};
+
+static const struct regmap_access_table tps65219_volatile_table = {
+ .yes_ranges = tps65219_yes_ranges,
+ .n_yes_ranges = ARRAY_SIZE(tps65219_yes_ranges),
+};
+
+static const struct regmap_config tps65219_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .cache_type = REGCACHE_RBTREE,
+ .volatile_table = &tps65219_volatile_table,
+};
+
+static const struct of_device_id of_tps65219_match_table[] = {
+ { .compatible = "ti,tps65219", },
+ {}
+};
+MODULE_DEVICE_TABLE(of, of_tps65219_match_table);
+
+static int tps65219_probe(struct i2c_client *client,
+ const struct i2c_device_id *ids)
+{
+ struct tps65219 *tps;
+ int ret;
+ unsigned int chipid;
+
+ tps = devm_kzalloc(&client->dev, sizeof(*tps), GFP_KERNEL);
+ if (!tps)
+ return -ENOMEM;
+
+ i2c_set_clientdata(client, tps);
+ tps->dev = &client->dev;
+ tps->regmap = devm_regmap_init_i2c(client, &tps65219_regmap_config);
+ if (IS_ERR(tps->regmap)) {
+ ret = PTR_ERR(tps->regmap);
+ dev_err(tps->dev, "Failed to allocate register map: %d\n",
+ ret);
+ return ret;
+ }
+
+ mutex_init(&tps->tps_lock);
+
+ ret = regmap_read(tps->regmap, TPS65219_REG_TI_DEV_ID, &chipid);
+ if (ret) {
+ dev_err(tps->dev, "Failed to read device ID: %d\n", ret);
+ return ret;
+ }
+
+ tps->rev = chipid & TPS65219_DEVID_REV_MASK;
+
+ ret = mfd_add_devices(tps->dev, PLATFORM_DEVID_AUTO, tps65219_cells,
+ ARRAY_SIZE(tps65219_cells), NULL, 0,
+ NULL);
+
+ tps->nb = pmic_rst_restart_nb;
+ ret = register_restart_handler(&pmic_rst_restart_nb);
+
+ if (ret) {
+ dev_err(tps->dev, "%s: cannot register restart handler, %d\n",
+ __func__, ret);
+ return -ENODEV;
+ }
+
+ /* If a pm_power_off function has already been added, leave it alone */
+ if (pm_power_off != NULL) {
+ dev_warn(tps->dev,
+ "%s: pm_power_off function already registered\n",
+ __func__);
+ } else {
+ tps65219_i2c_client = client;
+ pm_power_off = &pmic_poweroff_do_poweroff;
+ }
+ return ret;
+}
+
+static const struct i2c_device_id tps65219_id_table[] = {
+ { "tps65219", TPS65219 },
+ { },
+};
+MODULE_DEVICE_TABLE(i2c, tps65219_id_table);
+
+static struct i2c_driver tps65219_driver = {
+ .driver = {
+ .name = "tps65219",
+ .of_match_table = of_tps65219_match_table,
+ },
+ .probe = tps65219_probe,
+ .id_table = tps65219_id_table,
+};
+
+module_i2c_driver(tps65219_driver);
+
+MODULE_AUTHOR("Jerome NEANNE <jneanne@baylibre.com>");
+MODULE_DESCRIPTION("TPS65219 chip family multi-function driver");
+MODULE_LICENSE("GPL v2");
diff --git a/include/linux/mfd/tps65219.h b/include/linux/mfd/tps65219.h
new file mode 100644
index 000000000000..c55efed2d130
--- /dev/null
+++ b/include/linux/mfd/tps65219.h
@@ -0,0 +1,245 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * linux/mfd/tps65219.h
+ *
+ * Functions to access TPS65219 power management chip.
+ *
+ * Copyright (C) 2022 BayLibre Incorporated - https://www.baylibre.com/
+ */
+
+#ifndef __LINUX_MFD_TPS65219_H
+#define __LINUX_MFD_TPS65219_H
+
+#include <linux/i2c.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+#include <linux/bitops.h>
+
+#define WARMNCOLD 1
+#define TPS65219_1V35 1350000
+#define TPS65219_1V8 1800000
+
+/* TPS chip id list */
+#define TPS65219 0xF0
+
+/* I2C ID for TPS65219 part */
+#define TPS65219_I2C_ID 0x24
+
+/* All register addresses */
+#define TPS65219_REG_TI_DEV_ID 0x00
+#define TPS65219_REG_NVM_ID 0x01
+#define TPS65219_REG_ENABLE_CTRL 0x02
+#define TPS65219_REG_BUCKS_CONFIG 0x03
+#define TPS65219_REG_LDO4_VOUT 0x04
+#define TPS65219_REG_LDO3_VOUT 0x05
+#define TPS65219_REG_LDO2_VOUT 0x06
+#define TPS65219_REG_LDO1_VOUT 0x07
+#define TPS65219_REG_BUCK3_VOUT 0x8
+#define TPS65219_REG_BUCK2_VOUT 0x9
+#define TPS65219_REG_BUCK1_VOUT 0xA
+#define TPS65219_REG_LDO4_SEQUENCE_SLOT 0xB
+#define TPS65219_REG_LDO3_SEQUENCE_SLOT 0xC
+#define TPS65219_REG_LDO2_SEQUENCE_SLOT 0xD
+#define TPS65219_REG_LDO1_SEQUENCE_SLOT 0xE
+#define TPS65219_REG_BUCK3_SEQUENCE_SLOT 0xF
+#define TPS65219_REG_BUCK2_SEQUENCE_SLOT 0x10
+#define TPS65219_REG_BUCK1_SEQUENCE_SLOT 0x11
+#define TPS65219_REG_nRST_SEQUENCE_SLOT 0x12
+#define TPS65219_REG_GPIO_SEQUENCE_SLOT 0x13
+#define TPS65219_REG_GPO2_SEQUENCE_SLOT 0x14
+#define TPS65219_REG_GPO1_SEQUENCE_SLOT 0x15
+#define TPS65219_REG_POWER_UP_SLOT_DURATION_1 0x16
+#define TPS65219_REG_POWER_UP_SLOT_DURATION_2 0x17
+#define TPS65219_REG_POWER_UP_SLOT_DURATION_3 0x18
+#define TPS65219_REG_POWER_UP_SLOT_DURATION_4 0x19
+#define TPS65219_REG_POWER_DOWN_SLOT_DURATION_1 0x1A
+#define TPS65219_REG_POWER_DOWN_SLOT_DURATION_2 0x1B
+#define TPS65219_REG_POWER_DOWN_SLOT_DURATION_3 0x1C
+#define TPS65219_REG_POWER_DOWN_SLOT_DURATION_4 0x1D
+#define TPS65219_REG_GENERAL_CONFIG 0x1E
+#define TPS65219_REG_MFP_1_CONFIG 0x1F
+#define TPS65219_REG_MFP_2_CONFIG 0x20
+#define TPS65219_REG_STBY_1_CONFIG 0x21
+#define TPS65219_REG_STBY_2_CONFIG 0x22
+#define TPS65219_REG_OC_DEGL_CONFIG 0x23
+#define TPS65219_REG_INT_MASK_UV 0x24
+#define TPS65219_REG_MASK_CONFIG 0x25
+#define TPS65219_REG_I2C_ADDRESS_REG 0x26
+#define TPS65219_REG_USER_GENERAL_NVM_STORAGE 0x27
+#define TPS65219_REG_MANUFACTURING_VER 0x28
+#define TPS65219_REG_MFP_CTRL 0x29
+#define TPS65219_REG_DISCHARGE_CONFIG 0x2A
+#define TPS65219_REG_INT_SOURCE 0x2B
+#define TPS65219_REG_INT_LDO_3_4 0x2C
+#define TPS65219_REG_INT_LDO_1_2 0x2D
+#define TPS65219_REG_INT_BUCK_3 0x2E
+#define TPS65219_REG_INT_BUCK_1_2 0x2F
+#define TPS65219_REG_INT_SYSTEM 0x30
+#define TPS65219_REG_INT_RV 0x31
+#define TPS65219_REG_INT_TIMEOUT_RV_SD 0x32
+#define TPS65219_REG_INT_PB 0x33
+#define TPS65219_REG_USER_NVM_CMD 0x34
+#define TPS65219_REG_POWER_UP_STATUS 0x35
+#define TPS65219_REG_SPARE_2 0x36
+#define TPS65219_REG_SPARE_3 0x37
+#define TPS65219_REG_FACTORY_CONFIG_2 0x41
+
+/* Register field definitions */
+#define TPS65219_DEVID_REV_MASK 0xFF
+#define TPS65219_BUCKS_LDOS_VOUT_VSET_MASK 0x3F
+#define TPS65219_BUCKS_UV_THR_SEL BIT(6)
+#define TPS65219_BUCKS_BW_SEL BIT(7)
+#define TPS65219_LDOS_BYP_CONFIG_SHIFT 6
+#define TPS65219_LDOS_BYP_CONFIG_MASK BIT(TPS65219_LDOS_BYP_CONFIG_SHIFT)
+#define TPS65219_LDOS_LSW_CONFIG_MASK BIT(7)
+/* Regulators enable control */
+#define TPS65219_ENABLE_BUCK1_EN BIT(0)
+#define TPS65219_ENABLE_BUCK2_EN BIT(1)
+#define TPS65219_ENABLE_BUCK3_EN BIT(2)
+#define TPS65219_ENABLE_LDO1_EN BIT(3)
+#define TPS65219_ENABLE_LDO2_EN BIT(4)
+#define TPS65219_ENABLE_LDO3_EN BIT(5)
+#define TPS65219_ENABLE_LDO4_EN BIT(6)
+/* power ON-OFF sequence slot */
+#define TPS65219_BUCKS_LDOS_SEQUENCE_OFF_SLOT_MASK 0x0F
+#define TPS65219_BUCKS_LDOS_SEQUENCE_ON_SLOT_MASK 0xF0
+/* TODO: Not needed, same mapping as TPS65219_ENABLE_REGNAME_EN, factorize */
+#define TPS65219_STBY1_BUCK1_STBY_EN BIT(0)
+#define TPS65219_STBY1_BUCK2_STBY_EN BIT(1)
+#define TPS65219_STBY1_BUCK3_STBY_EN BIT(2)
+#define TPS65219_STBY1_LDO1_STBY_EN BIT(3)
+#define TPS65219_STBY1_LDO2_STBY_EN BIT(4)
+#define TPS65219_STBY1_LDO3_STBY_EN BIT(5)
+#define TPS65219_STBY1_LDO4_STBY_EN BIT(6)
+/* STBY_2 config */
+#define TPS65219_STBY2_GPO1_STBY_EN BIT(0)
+#define TPS65219_STBY2_GPO2_STBY_EN BIT(1)
+#define TPS65219_STBY2_GPIO_STBY_EN BIT(2)
+/* MFP Control */
+#define TPS65219_MFP_I2C_OFF_REQ BIT(0)
+#define TPS65219_MFP_STBY_I2C_CTRL BIT(1)
+#define TPS65219_MFP_COLD_RESET_I2C_CTRL BIT(2)
+#define TPS65219_MFP_WARM_RESET_I2C_CTRL BIT(3)
+#define TPS65219_MFP_GPIO_STATUS BIT(4)
+#define BUCKS_LDOS_STBY_ON_BIT 0x1
+/* MFP_1 Config */
+#define TPS65219_MFP_1_VSEL_DDR_SEL BIT(0)
+#define TPS65219_MFP_1_VSEL_SD_POL BIT(1)
+#define TPS65219_MFP_1_VSEL_RAIL BIT(2)
+/* interrupts source status*/
+#define TPS65219_INT_SRC_TIMEOUT_RV_SD_IS_SET BIT(0)
+#define TPS65219_INT_SRC_RV_IS_SET BIT(1)
+#define TPS65219_INT_SRC_SYSTEM_IS_SET BIT(2)
+#define TPS65219_INT_SRC_BUCK_1_2_IS_SET BIT(3)
+#define TPS65219_INT_SRC_BUCK_3_IS_SET BIT(4)
+#define TPS65219_INT_SRC_LDO_1_2_IS_SET BIT(5)
+#define TPS65219_INT_SRC_LDO_3_4_IS_SET BIT(6)
+#define TPS65219_INT_SRC_PB_IS_SET BIT(7)
+/* UnderVoltage - Short to GND - OverCurrent*/
+/* LDO3-4 */
+#define TPS65219_INT_LDO3_SCG BIT(0)
+#define TPS65219_INT_LDO3_OC BIT(1)
+#define TPS65219_INT_LDO3_UV BIT(2)
+#define TPS65219_INT_LDO4_SCG BIT(3)
+#define TPS65219_INT_LDO4_OC BIT(4)
+#define TPS65219_INT_LDO4_UV BIT(5)
+/* LDO1-2 */
+#define TPS65219_INT_LDO1_SCG BIT(0)
+#define TPS65219_INT_LDO1_OC BIT(1)
+#define TPS65219_INT_LDO1_UV BIT(2)
+#define TPS65219_INT_LDO2_SCG BIT(3)
+#define TPS65219_INT_LDO2_OC BIT(4)
+#define TPS65219_INT_LDO2_UV BIT(5)
+/* BUCK3 */
+#define TPS65219_INT_BUCK3_SCG BIT(0)
+#define TPS65219_INT_BUCK3_OC BIT(1)
+#define TPS65219_INT_BUCK3_NEG_OC BIT(2)
+#define TPS65219_INT_BUCK3_UV BIT(3)
+/* BUCK1-2 */
+#define TPS65219_INT_BUCK1_SCG BIT(0)
+#define TPS65219_INT_BUCK1_OC BIT(1)
+#define TPS65219_INT_BUCK1_NEG_OC BIT(2)
+#define TPS65219_INT_BUCK1_UV BIT(3)
+#define TPS65219_INT_BUCK2_SCG BIT(4)
+#define TPS65219_INT_BUCK2_OC BIT(5)
+#define TPS65219_INT_BUCK2_NEG_OC BIT(6)
+#define TPS65219_INT_BUCK2_UV BIT(7)
+/* Thermal Sensor */
+#define TPS65219_INT_SENSOR_3_WARM BIT(0)
+#define TPS65219_INT_SENSOR_2_WARM BIT(1)
+#define TPS65219_INT_SENSOR_1_WARM BIT(2)
+#define TPS65219_INT_SENSOR_0_WARM BIT(3)
+#define TPS65219_INT_SENSOR_3_HOT BIT(4)
+#define TPS65219_INT_SENSOR_2_HOT BIT(5)
+#define TPS65219_INT_SENSOR_1_HOT BIT(6)
+#define TPS65219_INT_SENSOR_0_HOT BIT(7)
+/* Residual Voltage */
+#define TPS65219_INT_BUCK1_RV BIT(0)
+#define TPS65219_INT_BUCK2_RV BIT(1)
+#define TPS65219_INT_BUCK3_RV BIT(2)
+#define TPS65219_INT_LDO1_RV BIT(3)
+#define TPS65219_INT_LDO2_RV BIT(4)
+#define TPS65219_INT_LDO3_RV BIT(5)
+#define TPS65219_INT_LDO4_RV BIT(6)
+/* Residual Voltage ShutDown */
+#define TPS65219_INT_BUCK1_RV_SD BIT(0)
+#define TPS65219_INT_BUCK2_RV_SD BIT(1)
+#define TPS65219_INT_BUCK3_RV_SD BIT(2)
+#define TPS65219_INT_LDO1_RV_SD BIT(3)
+#define TPS65219_INT_LDO2_RV_SD BIT(4)
+#define TPS65219_INT_LDO3_RV_SD BIT(5)
+#define TPS65219_INT_LDO4_RV_SD BIT(6)
+#define TPS65219_INT_TIMEOUT BIT(7)
+/* Power Button */
+#define TPS65219_INT_PB_FALLING_EDGE_DET BIT(0)
+#define TPS65219_INT_PB_RISING_EDGE_DETECT BIT(1)
+#define TPS65219_INT_PB_REAL_TIME_STATUS BIT(2)
+
+enum tps65219_regulator_id {
+ /* DCDC's */
+ TPS65219_BUCK_1,
+ TPS65219_BUCK_2,
+ TPS65219_BUCK_3,
+ /* LDOs */
+ TPS65219_LDO_1,
+ TPS65219_LDO_2,
+ TPS65219_LDO_3,
+ TPS65219_LDO_4,
+};
+
+#define TPS65219_MAX_REG_ID TPS65219_LDO_4
+
+/* Number of step-down converters available */
+#define TPS65219_NUM_DCDC 3
+/* Number of LDO voltage regulators available */
+#define TPS65219_NUM_LDO 4
+/* Number of total regulators available */
+#define TPS65219_NUM_REGULATOR (TPS65219_NUM_DCDC + TPS65219_NUM_LDO)
+
+/**
+ * struct tps65219 - tps65219 sub-driver chip access routines
+ *
+ * Device data may be used to access the TPS65219 chip
+ */
+struct tps65219 {
+ struct device *dev;
+ unsigned int id;
+ u8 rev;
+ struct mutex tps_lock; /* lock guarding the data structure */
+ struct regulator_desc desc[TPS65219_NUM_REGULATOR];
+ struct regmap *regmap;
+ u8 *strobes;
+ struct notifier_block nb;
+};
+int tps65219_reg_read(struct tps65219 *tps, unsigned int reg,
+ unsigned int *val);
+int tps65219_reg_write(struct tps65219 *tps, unsigned int reg,
+ unsigned int val);
+int tps65219_set_bits(struct tps65219 *tps, unsigned int reg,
+ unsigned int mask, unsigned int val);
+int tps65219_clear_bits(struct tps65219 *tps, unsigned int reg,
+ unsigned int mask);
+int tps65219_warm_reset(struct tps65219 *tps);
+int tps65219_cold_reset(struct tps65219 *tps);
+int tps65219_soft_shutdown(struct tps65219 *tps);
+#endif /* __LINUX_MFD_TPS65219_H */
--
2.17.1
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^ permalink raw reply related [flat|nested] 11+ messages in thread* [RFC PATCH 3/5] regulator: drivers: Add TI TPS65219 PMIC regulators support
2022-06-13 9:05 [RFC PATCH 0/5] Add TI TPS65219 PMIC support for AM642 SK board Jerome NEANNE
2022-06-13 9:06 ` [RFC PATCH 1/5] regulator: dt-bindings: Add TI TPS65219 PMIC bindings Jerome NEANNE
2022-06-13 9:06 ` [RFC PATCH 2/5] mfd: drivers: Add TI TPS65219 PMIC support Jerome NEANNE
@ 2022-06-13 9:06 ` Jerome NEANNE
2022-06-13 13:04 ` Mark Brown
2022-06-13 9:06 ` [RFC PATCH 4/5] arm64: Kconfig: Introduce CONFIG_MFD_TPS65219 and CONFIG_REGULATOR_TPS65219 Jerome NEANNE
2022-06-13 9:06 ` [RFC PATCH 5/5] arm64: dts: ti: Add TI TPS65219 PMIC support for AM642 SK board Jerome NEANNE
4 siblings, 1 reply; 11+ messages in thread
From: Jerome NEANNE @ 2022-06-13 9:06 UTC (permalink / raw)
To: lgirdwood, broonie, robh+dt, nm, kristo, will, lee.jones, jneanne
Cc: khilman, narmstrong, msp, j-keerthy, linux-kernel, devicetree,
linux-arm-kernel
The regulators set consists of 3 bucks DCDCs and 4 LDOs. The output
voltages are configurable and are meant to supply power to the
main processor and other components.
Validation:
Visual check: cat /sys/kernel/debug/regulator/regulator_summary
Validation: userspace-consumer and virtual-regulator required
to test further
Enable/Disable:
cat /sys/devices/platform/userspace-consumer-VDDSHV_SD_IO_PMIC/state
echo disabled > /sys/devices/platform/
userspace-consumer-VDDSHV_SD_IO_PMIC/state
echo enabled > /sys/devices/platform/
userspace-consumer-VDDSHV_SD_IO_PMIC/state
Change voltage:
cat /sys/devices/platform/regulator-virtual-ldo1/min_microvolts
echo 1000000 > /sys/devices/platform/regulator-virtual-ldo1/
min_microvolts
echo 3000000 > /sys/devices/platform/regulator-virtual-ldo1/
max_microvolts
Signed-off-by: Jerome NEANNE <jneanne@baylibre.com>
---
drivers/regulator/Kconfig | 9 +
drivers/regulator/Makefile | 1 +
drivers/regulator/tps65219-regulator.c | 334 +++++++++++++++++++++++++
3 files changed, 344 insertions(+)
create mode 100644 drivers/regulator/tps65219-regulator.c
diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index 24ce9a17ab4f..1a17b925264c 100644
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -1291,6 +1291,15 @@ config REGULATOR_TPS65218
voltage regulators. It supports software based voltage control
for different voltage domains
+config REGULATOR_TPS65219
+ tristate "TI TPS65219 Power regulators"
+ depends on MFD_TPS65219 && OF
+ help
+ This driver supports TPS65219 voltage regulator chips.
+ TPS65219 series of PMICs have 3 single phase BUCKs & 4 LDOs
+ voltage regulators. It supports software based voltage control
+ for different voltage domains
+
config REGULATOR_TPS6524X
tristate "TI TPS6524X Power regulators"
depends on SPI
diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile
index 8c2f82206b94..790839810e8e 100644
--- a/drivers/regulator/Makefile
+++ b/drivers/regulator/Makefile
@@ -152,6 +152,7 @@ obj-$(CONFIG_REGULATOR_TPS65086) += tps65086-regulator.o
obj-$(CONFIG_REGULATOR_TPS65090) += tps65090-regulator.o
obj-$(CONFIG_REGULATOR_TPS65217) += tps65217-regulator.o
obj-$(CONFIG_REGULATOR_TPS65218) += tps65218-regulator.o
+obj-$(CONFIG_REGULATOR_TPS65219) += tps65219-regulator.o
obj-$(CONFIG_REGULATOR_TPS6524X) += tps6524x-regulator.o
obj-$(CONFIG_REGULATOR_TPS6586X) += tps6586x-regulator.o
obj-$(CONFIG_REGULATOR_TPS65910) += tps65910-regulator.o
diff --git a/drivers/regulator/tps65219-regulator.c b/drivers/regulator/tps65219-regulator.c
new file mode 100644
index 000000000000..0e176e15daa6
--- /dev/null
+++ b/drivers/regulator/tps65219-regulator.c
@@ -0,0 +1,334 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * tps65219-regulator.c
+ *
+ * Regulator driver for TPS65219 PMIC
+ *
+ * Copyright (C) 2022 BayLibre Incorporated - https://www.baylibre.com/
+ */
+
+/* This implementation derived from tps65218 authored by "J Keerthy <j-keerthy@ti.com>" */
+
+#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/of_device.h>
+#include <linux/regmap.h>
+#include <linux/regulator/of_regulator.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+#include <linux/mfd/tps65219.h>
+
+#define TPS65219_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, \
+ .bypass_val_on = 1, \
+ } \
+
+static const struct linear_range bucks_ranges[] = {
+ REGULATOR_LINEAR_RANGE(600000, 0x0, 0x1f, 25000),
+ REGULATOR_LINEAR_RANGE(1400000, 0x20, 0x33, 100000),
+ REGULATOR_LINEAR_RANGE(3400000, 0x34, 0x3f, 0),
+};
+
+static const struct linear_range ldos_1_2_ranges[] = {
+ REGULATOR_LINEAR_RANGE(600000, 0x0, 0x37, 50000),
+ REGULATOR_LINEAR_RANGE(3400000, 0x38, 0x3f, 0),
+};
+
+static const struct linear_range ldos_3_4_ranges[] = {
+ REGULATOR_LINEAR_RANGE(1200000, 0x0, 0xC, 0),
+ REGULATOR_LINEAR_RANGE(1250000, 0xD, 0x35, 50000),
+ REGULATOR_LINEAR_RANGE(3300000, 0x36, 0x3F, 0),
+};
+
+static int tps65219_pmic_set_voltage_sel(struct regulator_dev *dev,
+ unsigned int selector)
+{
+ int ret;
+ struct tps65219 *tps = rdev_get_drvdata(dev);
+
+ /* Set the voltage based on vsel value */
+ ret = tps65219_set_bits(tps, dev->desc->vsel_reg, dev->desc->vsel_mask,
+ selector);
+ dev_dbg(tps->dev, "%s failed for regulator %s: %d ", __func__, dev->desc->name, ret);
+ return ret;
+}
+
+static int tps65219_pmic_enable(struct regulator_dev *dev)
+{
+ struct tps65219 *tps = rdev_get_drvdata(dev);
+ int rid = rdev_get_id(dev);
+ int ret;
+
+
+
+ if (rid < TPS65219_BUCK_1 || rid > TPS65219_LDO_4)
+ return -EINVAL;
+
+ ret = tps65219_set_bits(tps, dev->desc->enable_reg,
+ dev->desc->enable_mask, dev->desc->enable_mask);
+ return ret;
+}
+
+static int tps65219_pmic_disable(struct regulator_dev *dev)
+{
+ struct tps65219 *tps = rdev_get_drvdata(dev);
+ int rid = rdev_get_id(dev);
+
+
+ if (rid < TPS65219_BUCK_1 || rid > TPS65219_LDO_4)
+ return -EINVAL;
+
+
+ return tps65219_clear_bits(tps, dev->desc->enable_reg,
+ dev->desc->enable_mask);
+}
+
+static int tps65219_set_mode(struct regulator_dev *dev, unsigned int mode)
+{
+ struct tps65219 *tps = rdev_get_drvdata(dev);
+ unsigned int rid = rdev_get_id(dev);
+
+ if (rid < TPS65219_BUCK_1 || rid > TPS65219_LDO_4)
+ return -EINVAL;
+
+ switch (mode) {
+ case REGULATOR_MODE_NORMAL:
+ return tps65219_set_bits(tps, TPS65219_REG_STBY_1_CONFIG, dev->desc->enable_mask,
+ dev->desc->enable_mask);
+
+ case REGULATOR_MODE_STANDBY:
+ return tps65219_clear_bits(tps, TPS65219_REG_STBY_1_CONFIG, dev->desc->enable_mask);
+ }
+
+ return -EINVAL;
+}
+static unsigned int tps65219_get_mode(struct regulator_dev *dev)
+{
+ struct tps65219 *tps = rdev_get_drvdata(dev);
+ unsigned int rid = rdev_get_id(dev);
+ int ret, value = 0;
+
+ if (rid < TPS65219_BUCK_1 || rid > TPS65219_LDO_4)
+ return -EINVAL;
+
+ ret = tps65219_reg_read(tps, TPS65219_REG_STBY_1_CONFIG, &value);
+ value = (value & BIT(rid)) >> rid;
+ if (!(value & BUCKS_LDOS_STBY_ON_BIT))
+ ret = REGULATOR_MODE_STANDBY;
+ else
+ ret = REGULATOR_MODE_NORMAL;
+ return ret;
+}
+
+/* generic regulator_set_bypass_regmap does not match requirements use custom instead */
+static int tps65219_set_bypass(struct regulator_dev *dev, bool enable)
+{
+ struct tps65219 *tps = rdev_get_drvdata(dev);
+ unsigned int rid = rdev_get_id(dev);
+ int ret = 0;
+
+ if (rid < TPS65219_BUCK_1 || rid > TPS65219_LDO_4)
+ return -EINVAL;
+
+ if (rid < TPS65219_LDO_1 || rid > TPS65219_LDO_2) {
+ dev_err(tps->dev, "%s bypass allowed for LDO1/2 only ", __func__);
+ return -EPERM;
+ }
+
+ if (dev->desc->ops->is_enabled) {
+ dev_err(tps->dev, "%s LDO%d is enabled, should be shut down to set bypass ",
+ __func__, rid);
+ return -EBUSY;
+ }
+
+ if (enable) {
+ dev_dbg(tps->dev, "%s, LDO%d already in bypass mode", __func__, rid);
+ return ret;
+ }
+
+ ret = tps65219_set_bits(tps, dev->desc->vsel_reg, TPS65219_LDOS_BYP_CONFIG_MASK,
+ TPS65219_LDOS_BYP_CONFIG_MASK);
+ dev_dbg(tps->dev, "%s LDO%d switched to bypass mode", __func__, rid);
+ return ret;
+}
+
+/* Operations permitted on BUCK1/2/3 */
+static const struct regulator_ops tps65219_bucks_ops = {
+ .is_enabled = regulator_is_enabled_regmap,
+ .enable = tps65219_pmic_enable,
+ .disable = tps65219_pmic_disable,
+ .set_mode = tps65219_set_mode,
+ .get_mode = tps65219_get_mode,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .set_voltage_sel = tps65219_pmic_set_voltage_sel,
+ .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 */
+static const struct regulator_ops tps65219_ldos_1_2_ops = {
+ .is_enabled = regulator_is_enabled_regmap,
+ .enable = tps65219_pmic_enable,
+ .disable = tps65219_pmic_disable,
+ .set_mode = tps65219_set_mode,
+ .get_mode = tps65219_get_mode,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .set_voltage_sel = tps65219_pmic_set_voltage_sel,
+ .list_voltage = regulator_list_voltage_linear_range,
+ .map_voltage = regulator_map_voltage_linear_range,
+ .set_bypass = tps65219_set_bypass,
+ .get_bypass = regulator_get_bypass_regmap,
+};
+
+/* Operations permitted on LDO3/4 */
+static const struct regulator_ops tps65219_ldos_3_4_ops = {
+ .is_enabled = regulator_is_enabled_regmap,
+ .enable = tps65219_pmic_enable,
+ .disable = tps65219_pmic_disable,
+ .set_mode = tps65219_set_mode,
+ .get_mode = tps65219_get_mode,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .set_voltage_sel = tps65219_pmic_set_voltage_sel,
+ .list_voltage = regulator_list_voltage_linear_range,
+ .map_voltage = regulator_map_voltage_linear_range,
+};
+
+static const struct regulator_desc regulators[] = {
+ TPS65219_REGULATOR("BUCK1", "buck1", TPS65219_BUCK_1,
+ REGULATOR_VOLTAGE, tps65219_bucks_ops, 64,
+ TPS65219_REG_BUCK1_VOUT,
+ TPS65219_BUCKS_LDOS_VOUT_VSET_MASK, TPS65219_REG_ENABLE_CTRL,
+ TPS65219_ENABLE_BUCK1_EN, 0, 0, bucks_ranges,
+ 3, 4000, 0, NULL, 0, 0),
+ TPS65219_REGULATOR("BUCK2", "buck2", TPS65219_BUCK_2,
+ REGULATOR_VOLTAGE, tps65219_bucks_ops, 64,
+ TPS65219_REG_BUCK2_VOUT,
+ TPS65219_BUCKS_LDOS_VOUT_VSET_MASK, TPS65219_REG_ENABLE_CTRL,
+ TPS65219_ENABLE_BUCK2_EN, 0, 0, bucks_ranges,
+ 3, 4000, 0, NULL, 0, 0),
+ TPS65219_REGULATOR("BUCK3", "buck3", TPS65219_BUCK_3,
+ REGULATOR_VOLTAGE, tps65219_bucks_ops, 64,
+ TPS65219_REG_BUCK3_VOUT,
+ TPS65219_BUCKS_LDOS_VOUT_VSET_MASK, TPS65219_REG_ENABLE_CTRL,
+ TPS65219_ENABLE_BUCK3_EN, 0, 0, bucks_ranges, 3,
+ 0, 0, NULL, 0, 0),
+ TPS65219_REGULATOR("LDO1", "ldo1", TPS65219_LDO_1,
+ REGULATOR_VOLTAGE, tps65219_ldos_1_2_ops, 64,
+ TPS65219_REG_LDO1_VOUT,
+ TPS65219_BUCKS_LDOS_VOUT_VSET_MASK, TPS65219_REG_ENABLE_CTRL,
+ TPS65219_ENABLE_LDO1_EN, 0, 0, ldos_1_2_ranges,
+ 2, 0, 0, NULL, 0, TPS65219_LDOS_BYP_CONFIG_MASK),
+ TPS65219_REGULATOR("LDO2", "ldo2", TPS65219_LDO_2,
+ REGULATOR_VOLTAGE, tps65219_ldos_1_2_ops, 64,
+ TPS65219_REG_LDO2_VOUT,
+ TPS65219_BUCKS_LDOS_VOUT_VSET_MASK, TPS65219_REG_ENABLE_CTRL,
+ TPS65219_ENABLE_LDO2_EN, 0, 0, ldos_1_2_ranges,
+ 2, 0, 0, NULL, 0, TPS65219_LDOS_BYP_CONFIG_MASK),
+ TPS65219_REGULATOR("LDO3", "ldo3", TPS65219_LDO_3,
+ REGULATOR_VOLTAGE, tps65219_ldos_3_4_ops, 64,
+ TPS65219_REG_LDO3_VOUT,
+ TPS65219_BUCKS_LDOS_VOUT_VSET_MASK, TPS65219_REG_ENABLE_CTRL,
+ TPS65219_ENABLE_LDO3_EN, 0, 0, ldos_3_4_ranges,
+ 3, 0, 0, NULL, 0, 0),
+ TPS65219_REGULATOR("LDO4", "ldo4", TPS65219_LDO_4,
+ REGULATOR_VOLTAGE, tps65219_ldos_3_4_ops, 64,
+ TPS65219_REG_LDO4_VOUT,
+ TPS65219_BUCKS_LDOS_VOUT_VSET_MASK, TPS65219_REG_ENABLE_CTRL,
+ TPS65219_ENABLE_LDO4_EN, 0, 0, ldos_3_4_ranges,
+ 3, 0, 0, NULL, 0, 0),
+};
+
+static int tps65219_regulator_probe(struct platform_device *pdev)
+{
+ struct tps65219 *tps = dev_get_drvdata(pdev->dev.parent);
+ struct regulator_dev *rdev;
+ struct regulator_config config = { };
+ int i, ret;
+ unsigned int val;
+
+
+ config.dev = tps->dev;
+ config.driver_data = tps;
+ config.regmap = tps->regmap;
+
+ /* Allocate memory for strobes */
+ tps->strobes = devm_kcalloc(&pdev->dev,
+ TPS65219_NUM_REGULATOR, sizeof(u8),
+ GFP_KERNEL);
+ if (!tps->strobes)
+ return -ENOMEM;
+
+ for (i = 0; i < ARRAY_SIZE(regulators); i++) {
+ pr_debug("tps65219 regul i= %d START", i);
+ 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);
+ }
+
+ ret = regmap_read(tps->regmap, regulators[i].bypass_reg, &val);
+ if (ret) {
+ dev_err(tps->dev, "dev_err failed to map register for %s regulator\n",
+ pdev->name);
+ return ret;
+ }
+ pr_debug("tps65219 regul i= %d COMPLETED", i);
+ }
+
+ return 0;
+}
+
+static const struct platform_device_id tps65219_regulator_id_table[] = {
+ { "tps65219-regulator", },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(platform, tps65219_regulator_id_table);
+
+static struct platform_driver tps65219_regulator_driver = {
+ .driver = {
+ .name = "tps65219-pmic",
+ },
+ .probe = tps65219_regulator_probe,
+ .id_table = tps65219_regulator_id_table,
+};
+
+module_platform_driver(tps65219_regulator_driver);
+
+MODULE_AUTHOR("J Neanne <j-neanne@baylibre.com>");
+MODULE_DESCRIPTION("TPS65219 voltage regulator driver");
+MODULE_ALIAS("platform:tps65219-pmic");
+MODULE_LICENSE("GPL v2");
--
2.17.1
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^ permalink raw reply related [flat|nested] 11+ messages in thread