mfd: tps65219: Add driver for TI TPS65219 PMIC
authorJerome Neanne <jneanne@baylibre.com>
Fri, 4 Nov 2022 15:23:09 +0000 (16:23 +0100)
committerLee Jones <lee@kernel.org>
Wed, 7 Dec 2022 13:28:15 +0000 (13:28 +0000)
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)
- power-button

This patch adds support for tps65219 PMIC. At this time only
the functionalities listed below are made available:

- Regulators probe and functionalities
- warm and cold reset support
- SW shutdown support
- Regulator warnings via IRQs
- Power-button via IRQ

Signed-off-by: Jerome Neanne <jneanne@baylibre.com>
Signed-off-by: Markus Schneider-Pargmann <msp@baylibre.com>
Signed-off-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/20221104152311.1098603-5-jneanne@baylibre.com
MAINTAINERS
drivers/mfd/Kconfig
drivers/mfd/Makefile
drivers/mfd/tps65219.c [new file with mode: 0644]
include/linux/mfd/tps65219.h [new file with mode: 0644]

index cf0f1850237247013eacce7f737d35793e69024b..43b7cccbbaa44130f18d190a84ff598777f3c450 100644 (file)
@@ -15110,6 +15110,7 @@ F:      drivers/mfd/menelaus.c
 F:     drivers/mfd/palmas.c
 F:     drivers/mfd/tps65217.c
 F:     drivers/mfd/tps65218.c
+F:     drivers/mfd/tps65219.c
 F:     drivers/mfd/tps65910.c
 F:     drivers/mfd/twl-core.[ch]
 F:     drivers/mfd/twl4030*.c
index d6f1b0d3d82935749a291aadaa2127d30f6643b8..2d563277105cab9ba870034a6da3573c3129c834 100644 (file)
@@ -1625,6 +1625,20 @@ 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 IC"
+       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 ICs. These include voltage regulators, GPIOs and
+         push/power button that is 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
index 4dd479212b3abd3049fc16a5746e6d051e804971..457471478a9379a6a9b06421d8041f3737f4b2f6 100644 (file)
@@ -97,6 +97,7 @@ 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 (file)
index 0000000..0e402fd
--- /dev/null
@@ -0,0 +1,299 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// Driver for TPS65219 Integrated Power Management Integrated Chips (PMIC)
+//
+// Copyright (C) 2022 BayLibre Incorporated - https://www.baylibre.com/
+
+#include <linux/i2c.h>
+#include <linux/reboot.h>
+#include <linux/regmap.h>
+
+#include <linux/mfd/core.h>
+#include <linux/mfd/tps65219.h>
+
+static int tps65219_warm_reset(struct tps65219 *tps)
+{
+       return regmap_update_bits(tps->regmap, TPS65219_REG_MFP_CTRL,
+                                 TPS65219_MFP_WARM_RESET_I2C_CTRL_MASK,
+                                 TPS65219_MFP_WARM_RESET_I2C_CTRL_MASK);
+}
+
+static int tps65219_cold_reset(struct tps65219 *tps)
+{
+       return regmap_update_bits(tps->regmap, TPS65219_REG_MFP_CTRL,
+                                 TPS65219_MFP_COLD_RESET_I2C_CTRL_MASK,
+                                 TPS65219_MFP_COLD_RESET_I2C_CTRL_MASK);
+}
+
+static int tps65219_restart(struct notifier_block *this,
+                           unsigned long reboot_mode, void *cmd)
+{
+       struct tps65219 *tps;
+
+       tps = container_of(this, struct tps65219, nb);
+
+       if (reboot_mode == REBOOT_WARM)
+               tps65219_warm_reset(tps);
+       else
+               tps65219_cold_reset(tps);
+
+       return NOTIFY_DONE;
+}
+
+static struct notifier_block pmic_rst_restart_nb = {
+       .notifier_call = tps65219_restart,
+       .priority = 200,
+};
+
+static const struct resource tps65219_pwrbutton_resources[] = {
+       DEFINE_RES_IRQ_NAMED(TPS65219_INT_PB_FALLING_EDGE_DETECT, "falling"),
+       DEFINE_RES_IRQ_NAMED(TPS65219_INT_PB_RISING_EDGE_DETECT, "rising"),
+};
+
+static const struct resource tps65219_regulator_resources[] = {
+       DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO3_SCG, "LDO3_SCG"),
+       DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO3_OC, "LDO3_OC"),
+       DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO3_UV, "LDO3_UV"),
+       DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO4_SCG, "LDO4_SCG"),
+       DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO4_OC, "LDO4_OC"),
+       DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO4_UV, "LDO4_UV"),
+       DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO1_SCG, "LDO1_SCG"),
+       DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO1_OC, "LDO1_OC"),
+       DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO1_UV, "LDO1_UV"),
+       DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO2_SCG, "LDO2_SCG"),
+       DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO2_OC, "LDO2_OC"),
+       DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO2_UV, "LDO2_UV"),
+       DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK3_SCG, "BUCK3_SCG"),
+       DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK3_OC, "BUCK3_OC"),
+       DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK3_NEG_OC, "BUCK3_NEG_OC"),
+       DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK3_UV, "BUCK3_UV"),
+       DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK1_SCG, "BUCK1_SCG"),
+       DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK1_OC, "BUCK1_OC"),
+       DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK1_NEG_OC, "BUCK1_NEG_OC"),
+       DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK1_UV, "BUCK1_UV"),
+       DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK2_SCG, "BUCK2_SCG"),
+       DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK2_OC, "BUCK2_OC"),
+       DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK2_NEG_OC, "BUCK2_NEG_OC"),
+       DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK2_UV, "BUCK2_UV"),
+       DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK1_RV, "BUCK1_RV"),
+       DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK2_RV, "BUCK2_RV"),
+       DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK3_RV, "BUCK3_RV"),
+       DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO1_RV, "LDO1_RV"),
+       DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO2_RV, "LDO2_RV"),
+       DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO3_RV, "LDO3_RV"),
+       DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO4_RV, "LDO4_RV"),
+       DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK1_RV_SD, "BUCK1_RV_SD"),
+       DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK2_RV_SD, "BUCK2_RV_SD"),
+       DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK3_RV_SD, "BUCK3_RV_SD"),
+       DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO1_RV_SD, "LDO1_RV_SD"),
+       DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO2_RV_SD, "LDO2_RV_SD"),
+       DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO3_RV_SD, "LDO3_RV_SD"),
+       DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO4_RV_SD, "LDO4_RV_SD"),
+       DEFINE_RES_IRQ_NAMED(TPS65219_INT_TIMEOUT, "TIMEOUT"),
+       DEFINE_RES_IRQ_NAMED(TPS65219_INT_SENSOR_3_WARM, "SENSOR_3_WARM"),
+       DEFINE_RES_IRQ_NAMED(TPS65219_INT_SENSOR_2_WARM, "SENSOR_2_WARM"),
+       DEFINE_RES_IRQ_NAMED(TPS65219_INT_SENSOR_1_WARM, "SENSOR_1_WARM"),
+       DEFINE_RES_IRQ_NAMED(TPS65219_INT_SENSOR_0_WARM, "SENSOR_0_WARM"),
+       DEFINE_RES_IRQ_NAMED(TPS65219_INT_SENSOR_3_HOT, "SENSOR_3_HOT"),
+       DEFINE_RES_IRQ_NAMED(TPS65219_INT_SENSOR_2_HOT, "SENSOR_2_HOT"),
+       DEFINE_RES_IRQ_NAMED(TPS65219_INT_SENSOR_1_HOT, "SENSOR_1_HOT"),
+       DEFINE_RES_IRQ_NAMED(TPS65219_INT_SENSOR_0_HOT, "SENSOR_0_HOT"),
+};
+
+static const struct mfd_cell tps65219_cells[] = {
+       {
+               .name = "tps65219-regulator",
+               .resources = tps65219_regulator_resources,
+               .num_resources = ARRAY_SIZE(tps65219_regulator_resources),
+       },
+       { .name = "tps65219-gpios", },
+};
+
+static const struct mfd_cell tps65219_pwrbutton_cell = {
+       .name = "tps65219-pwrbutton",
+       .resources = tps65219_pwrbutton_resources,
+       .num_resources = ARRAY_SIZE(tps65219_pwrbutton_resources),
+};
+
+static const struct regmap_config tps65219_regmap_config = {
+       .reg_bits = 8,
+       .val_bits = 8,
+       .max_register = TPS65219_REG_FACTORY_CONFIG_2,
+};
+
+/*
+ * Mapping of main IRQ register bits to sub-IRQ register offsets so that we can
+ * access corect sub-IRQ registers based on bits that are set in main IRQ
+ * register.
+ */
+/* Timeout Residual Voltage Shutdown */
+static unsigned int bit0_offsets[] = { TPS65219_REG_INT_TO_RV_POS };
+static unsigned int bit1_offsets[] = { TPS65219_REG_INT_RV_POS };      /* Residual Voltage */
+static unsigned int bit2_offsets[] = { TPS65219_REG_INT_SYS_POS };     /* System */
+static unsigned int bit3_offsets[] = { TPS65219_REG_INT_BUCK_1_2_POS };        /* Buck 1-2 */
+static unsigned int bit4_offsets[] = { TPS65219_REG_INT_BUCK_3_POS };  /* Buck 3 */
+static unsigned int bit5_offsets[] = { TPS65219_REG_INT_LDO_1_2_POS }; /* LDO 1-2 */
+static unsigned int bit6_offsets[] = { TPS65219_REG_INT_LDO_3_4_POS }; /* LDO 3-4 */
+static unsigned int bit7_offsets[] = { TPS65219_REG_INT_PB_POS };      /* Power Button */
+
+static struct regmap_irq_sub_irq_map tps65219_sub_irq_offsets[] = {
+       REGMAP_IRQ_MAIN_REG_OFFSET(bit0_offsets),
+       REGMAP_IRQ_MAIN_REG_OFFSET(bit1_offsets),
+       REGMAP_IRQ_MAIN_REG_OFFSET(bit2_offsets),
+       REGMAP_IRQ_MAIN_REG_OFFSET(bit3_offsets),
+       REGMAP_IRQ_MAIN_REG_OFFSET(bit4_offsets),
+       REGMAP_IRQ_MAIN_REG_OFFSET(bit5_offsets),
+       REGMAP_IRQ_MAIN_REG_OFFSET(bit6_offsets),
+       REGMAP_IRQ_MAIN_REG_OFFSET(bit7_offsets),
+};
+
+#define TPS65219_REGMAP_IRQ_REG(int_name, register_position) \
+       REGMAP_IRQ_REG(int_name, register_position, int_name##_MASK)
+
+static struct regmap_irq tps65219_irqs[] = {
+       TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO3_SCG, TPS65219_REG_INT_LDO_3_4_POS),
+       TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO3_OC, TPS65219_REG_INT_LDO_3_4_POS),
+       TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO3_UV, TPS65219_REG_INT_LDO_3_4_POS),
+       TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO4_SCG, TPS65219_REG_INT_LDO_3_4_POS),
+       TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO4_OC, TPS65219_REG_INT_LDO_3_4_POS),
+       TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO4_UV, TPS65219_REG_INT_LDO_3_4_POS),
+       TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO1_SCG, TPS65219_REG_INT_LDO_1_2_POS),
+       TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO1_OC, TPS65219_REG_INT_LDO_1_2_POS),
+       TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO1_UV, TPS65219_REG_INT_LDO_1_2_POS),
+       TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO2_SCG, TPS65219_REG_INT_LDO_1_2_POS),
+       TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO2_OC, TPS65219_REG_INT_LDO_1_2_POS),
+       TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO2_UV, TPS65219_REG_INT_LDO_1_2_POS),
+       TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK3_SCG, TPS65219_REG_INT_BUCK_3_POS),
+       TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK3_OC, TPS65219_REG_INT_BUCK_3_POS),
+       TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK3_NEG_OC, TPS65219_REG_INT_BUCK_3_POS),
+       TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK3_UV, TPS65219_REG_INT_BUCK_3_POS),
+       TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK2_SCG, TPS65219_REG_INT_BUCK_1_2_POS),
+       TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK2_OC, TPS65219_REG_INT_BUCK_1_2_POS),
+       TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK2_NEG_OC, TPS65219_REG_INT_BUCK_1_2_POS),
+       TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK2_UV, TPS65219_REG_INT_BUCK_1_2_POS),
+       TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK1_SCG, TPS65219_REG_INT_BUCK_1_2_POS),
+       TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK1_OC, TPS65219_REG_INT_BUCK_1_2_POS),
+       TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK1_NEG_OC, TPS65219_REG_INT_BUCK_1_2_POS),
+       TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK1_UV, TPS65219_REG_INT_BUCK_1_2_POS),
+       TPS65219_REGMAP_IRQ_REG(TPS65219_INT_SENSOR_3_WARM, TPS65219_REG_INT_SYS_POS),
+       TPS65219_REGMAP_IRQ_REG(TPS65219_INT_SENSOR_2_WARM, TPS65219_REG_INT_SYS_POS),
+       TPS65219_REGMAP_IRQ_REG(TPS65219_INT_SENSOR_1_WARM, TPS65219_REG_INT_SYS_POS),
+       TPS65219_REGMAP_IRQ_REG(TPS65219_INT_SENSOR_0_WARM, TPS65219_REG_INT_SYS_POS),
+       TPS65219_REGMAP_IRQ_REG(TPS65219_INT_SENSOR_3_HOT, TPS65219_REG_INT_SYS_POS),
+       TPS65219_REGMAP_IRQ_REG(TPS65219_INT_SENSOR_2_HOT, TPS65219_REG_INT_SYS_POS),
+       TPS65219_REGMAP_IRQ_REG(TPS65219_INT_SENSOR_1_HOT, TPS65219_REG_INT_SYS_POS),
+       TPS65219_REGMAP_IRQ_REG(TPS65219_INT_SENSOR_0_HOT, TPS65219_REG_INT_SYS_POS),
+       TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK1_RV, TPS65219_REG_INT_RV_POS),
+       TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK2_RV, TPS65219_REG_INT_RV_POS),
+       TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK3_RV, TPS65219_REG_INT_RV_POS),
+       TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO1_RV, TPS65219_REG_INT_RV_POS),
+       TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO2_RV, TPS65219_REG_INT_RV_POS),
+       TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO3_RV, TPS65219_REG_INT_RV_POS),
+       TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO4_RV, TPS65219_REG_INT_RV_POS),
+       TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK1_RV_SD, TPS65219_REG_INT_TO_RV_POS),
+       TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK2_RV_SD, TPS65219_REG_INT_TO_RV_POS),
+       TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK3_RV_SD, TPS65219_REG_INT_TO_RV_POS),
+       TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO1_RV_SD, TPS65219_REG_INT_TO_RV_POS),
+       TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO2_RV_SD, TPS65219_REG_INT_TO_RV_POS),
+       TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO3_RV_SD, TPS65219_REG_INT_TO_RV_POS),
+       TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO4_RV_SD, TPS65219_REG_INT_TO_RV_POS),
+       TPS65219_REGMAP_IRQ_REG(TPS65219_INT_TIMEOUT, TPS65219_REG_INT_TO_RV_POS),
+       TPS65219_REGMAP_IRQ_REG(TPS65219_INT_PB_FALLING_EDGE_DETECT, TPS65219_REG_INT_PB_POS),
+       TPS65219_REGMAP_IRQ_REG(TPS65219_INT_PB_RISING_EDGE_DETECT, TPS65219_REG_INT_PB_POS),
+};
+
+static struct regmap_irq_chip tps65219_irq_chip = {
+       .name = "tps65219_irq",
+       .main_status = TPS65219_REG_INT_SOURCE,
+       .num_main_regs = 1,
+       .num_main_status_bits = 8,
+       .irqs = tps65219_irqs,
+       .num_irqs = ARRAY_SIZE(tps65219_irqs),
+       .status_base = TPS65219_REG_INT_LDO_3_4,
+       .ack_base = TPS65219_REG_INT_LDO_3_4,
+       .clear_ack = 1,
+       .num_regs = 8,
+       .sub_reg_offsets = tps65219_sub_irq_offsets,
+};
+
+static int tps65219_probe(struct i2c_client *client)
+{
+       struct tps65219 *tps;
+       unsigned int chipid;
+       bool pwr_button;
+       int ret;
+
+       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;
+       }
+
+       ret = devm_regmap_add_irq_chip(&client->dev, tps->regmap, client->irq,
+                                      IRQF_ONESHOT, 0, &tps65219_irq_chip,
+                                      &tps->irq_data);
+       if (ret)
+               return ret;
+
+       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;
+       }
+
+       ret = devm_mfd_add_devices(tps->dev, PLATFORM_DEVID_AUTO,
+                                  tps65219_cells, ARRAY_SIZE(tps65219_cells),
+                                  NULL, 0, regmap_irq_get_domain(tps->irq_data));
+       if (ret) {
+               dev_err(tps->dev, "Failed to add child devices: %d\n", ret);
+               return ret;
+       }
+
+       pwr_button = of_property_read_bool(tps->dev->of_node, "ti,power-button");
+       if (pwr_button) {
+               ret = devm_mfd_add_devices(tps->dev, PLATFORM_DEVID_AUTO,
+                                          &tps65219_pwrbutton_cell, 1, NULL, 0,
+                                          regmap_irq_get_domain(tps->irq_data));
+               if (ret) {
+                       dev_err(tps->dev, "Failed to add power-button: %d\n", ret);
+                       return ret;
+               }
+       }
+
+       tps->nb = pmic_rst_restart_nb;
+       ret = register_restart_handler(&tps->nb);
+       if (ret) {
+               dev_err(tps->dev, "cannot register restart handler, %d\n", ret);
+               return ret;
+       }
+
+       return 0;
+}
+
+static const struct of_device_id of_tps65219_match_table[] = {
+       { .compatible = "ti,tps65219", },
+       {}
+};
+MODULE_DEVICE_TABLE(of, of_tps65219_match_table);
+
+static struct i2c_driver tps65219_driver = {
+       .driver         = {
+               .name   = "tps65219",
+               .of_match_table = of_tps65219_match_table,
+       },
+       .probe_new      = tps65219_probe,
+};
+module_i2c_driver(tps65219_driver);
+
+MODULE_AUTHOR("Jerome Neanne <jneanne@baylibre.com>");
+MODULE_DESCRIPTION("TPS65219 power management IC driver");
+MODULE_LICENSE("GPL");
diff --git a/include/linux/mfd/tps65219.h b/include/linux/mfd/tps65219.h
new file mode 100644 (file)
index 0000000..e6826e3
--- /dev/null
@@ -0,0 +1,345 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Functions to access TPS65219 Power Management IC.
+ *
+ * Copyright (C) 2022 BayLibre Incorporated - https://www.baylibre.com/
+ */
+
+#ifndef MFD_TPS65219_H
+#define MFD_TPS65219_H
+
+#include <linux/bitops.h>
+#include <linux/notifier.h>
+#include <linux/regulator/driver.h>
+
+struct regmap;
+struct regmap_irq_chip_data;
+
+#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
+/* 'sub irq' MASK registers */
+#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
+/* main irq registers */
+#define TPS65219_REG_INT_SOURCE                                0x2B
+/* 'sub irq' registers */
+#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_INT_LDO_3_4_POS                   0
+#define TPS65219_REG_INT_LDO_1_2_POS                   1
+#define TPS65219_REG_INT_BUCK_3_POS                    2
+#define TPS65219_REG_INT_BUCK_1_2_POS                  3
+#define TPS65219_REG_INT_SYS_POS                       4
+#define TPS65219_REG_INT_RV_POS                                5
+#define TPS65219_REG_INT_TO_RV_POS                     6
+#define TPS65219_REG_INT_PB_POS                                7
+
+#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                                GENMASK(7, 0)
+#define TPS65219_BUCKS_LDOS_VOUT_VSET_MASK             GENMASK(5, 0)
+#define TPS65219_BUCKS_UV_THR_SEL_MASK                 BIT(6)
+#define TPS65219_BUCKS_BW_SEL_MASK                     BIT(7)
+#define LDO_BYP_SHIFT                                  6
+#define TPS65219_LDOS_BYP_CONFIG_MASK                  BIT(LDO_BYP_SHIFT)
+#define TPS65219_LDOS_LSW_CONFIG_MASK                  BIT(7)
+/* Regulators enable control */
+#define TPS65219_ENABLE_BUCK1_EN_MASK                  BIT(0)
+#define TPS65219_ENABLE_BUCK2_EN_MASK                  BIT(1)
+#define TPS65219_ENABLE_BUCK3_EN_MASK                  BIT(2)
+#define TPS65219_ENABLE_LDO1_EN_MASK                   BIT(3)
+#define TPS65219_ENABLE_LDO2_EN_MASK                   BIT(4)
+#define TPS65219_ENABLE_LDO3_EN_MASK                   BIT(5)
+#define TPS65219_ENABLE_LDO4_EN_MASK                   BIT(6)
+/* power ON-OFF sequence slot */
+#define TPS65219_BUCKS_LDOS_SEQUENCE_OFF_SLOT_MASK     GENMASK(3, 0)
+#define TPS65219_BUCKS_LDOS_SEQUENCE_ON_SLOT_MASK      GENMASK(7, 4)
+/* TODO: Not needed, same mapping as TPS65219_ENABLE_REGNAME_EN, factorize */
+#define TPS65219_STBY1_BUCK1_STBY_EN_MASK              BIT(0)
+#define TPS65219_STBY1_BUCK2_STBY_EN_MASK              BIT(1)
+#define TPS65219_STBY1_BUCK3_STBY_EN_MASK              BIT(2)
+#define TPS65219_STBY1_LDO1_STBY_EN_MASK               BIT(3)
+#define TPS65219_STBY1_LDO2_STBY_EN_MASK               BIT(4)
+#define TPS65219_STBY1_LDO3_STBY_EN_MASK               BIT(5)
+#define TPS65219_STBY1_LDO4_STBY_EN_MASK               BIT(6)
+/* STBY_2 config */
+#define TPS65219_STBY2_GPO1_STBY_EN_MASK               BIT(0)
+#define TPS65219_STBY2_GPO2_STBY_EN_MASK               BIT(1)
+#define TPS65219_STBY2_GPIO_STBY_EN_MASK               BIT(2)
+/* MFP Control */
+#define TPS65219_MFP_I2C_OFF_REQ_MASK                  BIT(0)
+#define TPS65219_MFP_STBY_I2C_CTRL_MASK                        BIT(1)
+#define TPS65219_MFP_COLD_RESET_I2C_CTRL_MASK          BIT(2)
+#define TPS65219_MFP_WARM_RESET_I2C_CTRL_MASK          BIT(3)
+#define TPS65219_MFP_GPIO_STATUS_MASK                  BIT(4)
+/* MFP_1 Config */
+#define TPS65219_MFP_1_VSEL_DDR_SEL_MASK               BIT(0)
+#define TPS65219_MFP_1_VSEL_SD_POL_MASK                        BIT(1)
+#define TPS65219_MFP_1_VSEL_RAIL_MASK                  BIT(2)
+/* MFP_2 Config */
+#define TPS65219_MFP_2_MODE_STBY_MASK                  GENMASK(1, 0)
+#define TPS65219_MFP_2_MODE_RESET_MASK                 BIT(2)
+#define TPS65219_MFP_2_EN_PB_VSENSE_DEGL_MASK          BIT(3)
+#define TPS65219_MFP_2_EN_PB_VSENSE_MASK               GENMASK(5, 4)
+#define TPS65219_MFP_2_WARM_COLD_RESET_MASK            BIT(6)
+#define TPS65219_MFP_2_PU_ON_FSD_MASK                  BIT(7)
+#define TPS65219_MFP_2_EN                              0
+#define TPS65219_MFP_2_PB                              BIT(4)
+#define TPS65219_MFP_2_VSENSE                          BIT(5)
+/* MASK_UV Config */
+#define TPS65219_REG_MASK_UV_LDO1_UV_MASK              BIT(0)
+#define TPS65219_REG_MASK_UV_LDO2_UV_MASK              BIT(1)
+#define TPS65219_REG_MASK_UV_LDO3_UV_MASK              BIT(2)
+#define TPS65219_REG_MASK_UV_LDO4_UV_MASK              BIT(3)
+#define TPS65219_REG_MASK_UV_BUCK1_UV_MASK             BIT(4)
+#define TPS65219_REG_MASK_UV_BUCK2_UV_MASK             BIT(5)
+#define TPS65219_REG_MASK_UV_BUCK3_UV_MASK             BIT(6)
+#define TPS65219_REG_MASK_UV_RETRY_MASK                        BIT(7)
+/* MASK Config */
+// SENSOR_N_WARM_MASK already defined in Thermal
+#define TPS65219_REG_MASK_INT_FOR_RV_MASK              BIT(4)
+#define TPS65219_REG_MASK_EFFECT_MASK                  GENMASK(2, 1)
+#define TPS65219_REG_MASK_INT_FOR_PB_MASK              BIT(7)
+/* UnderVoltage - Short to GND - OverCurrent*/
+/* LDO3-4 */
+#define TPS65219_INT_LDO3_SCG_MASK                     BIT(0)
+#define TPS65219_INT_LDO3_OC_MASK                      BIT(1)
+#define TPS65219_INT_LDO3_UV_MASK                      BIT(2)
+#define TPS65219_INT_LDO4_SCG_MASK                     BIT(3)
+#define TPS65219_INT_LDO4_OC_MASK                      BIT(4)
+#define TPS65219_INT_LDO4_UV_MASK                      BIT(5)
+/* LDO1-2 */
+#define TPS65219_INT_LDO1_SCG_MASK                     BIT(0)
+#define TPS65219_INT_LDO1_OC_MASK                      BIT(1)
+#define TPS65219_INT_LDO1_UV_MASK                      BIT(2)
+#define TPS65219_INT_LDO2_SCG_MASK                     BIT(3)
+#define TPS65219_INT_LDO2_OC_MASK                      BIT(4)
+#define TPS65219_INT_LDO2_UV_MASK                      BIT(5)
+/* BUCK3 */
+#define TPS65219_INT_BUCK3_SCG_MASK                    BIT(0)
+#define TPS65219_INT_BUCK3_OC_MASK                     BIT(1)
+#define TPS65219_INT_BUCK3_NEG_OC_MASK                 BIT(2)
+#define TPS65219_INT_BUCK3_UV_MASK                     BIT(3)
+/* BUCK1-2 */
+#define TPS65219_INT_BUCK1_SCG_MASK                    BIT(0)
+#define TPS65219_INT_BUCK1_OC_MASK                     BIT(1)
+#define TPS65219_INT_BUCK1_NEG_OC_MASK                 BIT(2)
+#define TPS65219_INT_BUCK1_UV_MASK                     BIT(3)
+#define TPS65219_INT_BUCK2_SCG_MASK                    BIT(4)
+#define TPS65219_INT_BUCK2_OC_MASK                     BIT(5)
+#define TPS65219_INT_BUCK2_NEG_OC_MASK                 BIT(6)
+#define TPS65219_INT_BUCK2_UV_MASK                     BIT(7)
+/* Thermal Sensor  */
+#define TPS65219_INT_SENSOR_3_WARM_MASK                        BIT(0)
+#define TPS65219_INT_SENSOR_2_WARM_MASK                        BIT(1)
+#define TPS65219_INT_SENSOR_1_WARM_MASK                        BIT(2)
+#define TPS65219_INT_SENSOR_0_WARM_MASK                        BIT(3)
+#define TPS65219_INT_SENSOR_3_HOT_MASK                 BIT(4)
+#define TPS65219_INT_SENSOR_2_HOT_MASK                 BIT(5)
+#define TPS65219_INT_SENSOR_1_HOT_MASK                 BIT(6)
+#define TPS65219_INT_SENSOR_0_HOT_MASK                 BIT(7)
+/* Residual Voltage */
+#define TPS65219_INT_BUCK1_RV_MASK                     BIT(0)
+#define TPS65219_INT_BUCK2_RV_MASK                     BIT(1)
+#define TPS65219_INT_BUCK3_RV_MASK                     BIT(2)
+#define TPS65219_INT_LDO1_RV_MASK                      BIT(3)
+#define TPS65219_INT_LDO2_RV_MASK                      BIT(4)
+#define TPS65219_INT_LDO3_RV_MASK                      BIT(5)
+#define TPS65219_INT_LDO4_RV_MASK                      BIT(6)
+/* Residual Voltage ShutDown */
+#define TPS65219_INT_BUCK1_RV_SD_MASK                  BIT(0)
+#define TPS65219_INT_BUCK2_RV_SD_MASK                  BIT(1)
+#define TPS65219_INT_BUCK3_RV_SD_MASK                  BIT(2)
+#define TPS65219_INT_LDO1_RV_SD_MASK                   BIT(3)
+#define TPS65219_INT_LDO2_RV_SD_MASK                   BIT(4)
+#define TPS65219_INT_LDO3_RV_SD_MASK                   BIT(5)
+#define TPS65219_INT_LDO4_RV_SD_MASK                   BIT(6)
+#define TPS65219_INT_TIMEOUT_MASK                      BIT(7)
+/* Power Button */
+#define TPS65219_INT_PB_FALLING_EDGE_DETECT_MASK       BIT(0)
+#define TPS65219_INT_PB_RISING_EDGE_DETECT_MASK                BIT(1)
+#define TPS65219_INT_PB_REAL_TIME_STATUS_MASK          BIT(2)
+
+#define TPS65219_PB_POS                                        7
+#define TPS65219_TO_RV_POS                             6
+#define TPS65219_RV_POS                                        5
+#define TPS65219_SYS_POS                               4
+#define TPS65219_BUCK_1_2_POS                          3
+#define TPS65219_BUCK_3_POS                            2
+#define TPS65219_LDO_1_2_POS                           1
+#define TPS65219_LDO_3_4_POS                           0
+
+/* IRQs */
+enum {
+       /* LDO3-4 register IRQs */
+       TPS65219_INT_LDO3_SCG,
+       TPS65219_INT_LDO3_OC,
+       TPS65219_INT_LDO3_UV,
+       TPS65219_INT_LDO4_SCG,
+       TPS65219_INT_LDO4_OC,
+       TPS65219_INT_LDO4_UV,
+       /* LDO1-2 */
+       TPS65219_INT_LDO1_SCG,
+       TPS65219_INT_LDO1_OC,
+       TPS65219_INT_LDO1_UV,
+       TPS65219_INT_LDO2_SCG,
+       TPS65219_INT_LDO2_OC,
+       TPS65219_INT_LDO2_UV,
+       /* BUCK3 */
+       TPS65219_INT_BUCK3_SCG,
+       TPS65219_INT_BUCK3_OC,
+       TPS65219_INT_BUCK3_NEG_OC,
+       TPS65219_INT_BUCK3_UV,
+       /* BUCK1-2 */
+       TPS65219_INT_BUCK1_SCG,
+       TPS65219_INT_BUCK1_OC,
+       TPS65219_INT_BUCK1_NEG_OC,
+       TPS65219_INT_BUCK1_UV,
+       TPS65219_INT_BUCK2_SCG,
+       TPS65219_INT_BUCK2_OC,
+       TPS65219_INT_BUCK2_NEG_OC,
+       TPS65219_INT_BUCK2_UV,
+       /* Thermal Sensor  */
+       TPS65219_INT_SENSOR_3_WARM,
+       TPS65219_INT_SENSOR_2_WARM,
+       TPS65219_INT_SENSOR_1_WARM,
+       TPS65219_INT_SENSOR_0_WARM,
+       TPS65219_INT_SENSOR_3_HOT,
+       TPS65219_INT_SENSOR_2_HOT,
+       TPS65219_INT_SENSOR_1_HOT,
+       TPS65219_INT_SENSOR_0_HOT,
+       /* Residual Voltage */
+       TPS65219_INT_BUCK1_RV,
+       TPS65219_INT_BUCK2_RV,
+       TPS65219_INT_BUCK3_RV,
+       TPS65219_INT_LDO1_RV,
+       TPS65219_INT_LDO2_RV,
+       TPS65219_INT_LDO3_RV,
+       TPS65219_INT_LDO4_RV,
+       /* Residual Voltage ShutDown */
+       TPS65219_INT_BUCK1_RV_SD,
+       TPS65219_INT_BUCK2_RV_SD,
+       TPS65219_INT_BUCK3_RV_SD,
+       TPS65219_INT_LDO1_RV_SD,
+       TPS65219_INT_LDO2_RV_SD,
+       TPS65219_INT_LDO3_RV_SD,
+       TPS65219_INT_LDO4_RV_SD,
+       TPS65219_INT_TIMEOUT,
+       /* Power Button */
+       TPS65219_INT_PB_FALLING_EDGE_DETECT,
+       TPS65219_INT_PB_RISING_EDGE_DETECT,
+};
+
+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,
+};
+
+/* 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)
+
+/* Define the TPS65219 IRQ numbers */
+enum tps65219_irqs {
+       /* INT source registers */
+       TPS65219_TO_RV_SD_SET_IRQ,
+       TPS65219_RV_SET_IRQ,
+       TPS65219_SYS_SET_IRQ,
+       TPS65219_BUCK_1_2_SET_IRQ,
+       TPS65219_BUCK_3_SET_IRQ,
+       TPS65219_LDO_1_2_SET_IRQ,
+       TPS65219_LDO_3_4_SET_IRQ,
+       TPS65219_PB_SET_IRQ,
+};
+
+/**
+ * struct tps65219 - tps65219 sub-driver chip access routines
+ *
+ * Device data may be used to access the TPS65219 chip
+ *
+ * @dev: MFD device
+ * @regmap: Regmap for accessing the device registers
+ * @irq_data: Regmap irq data used for the irq chip
+ * @nb: notifier block for the restart handler
+ */
+struct tps65219 {
+       struct device *dev;
+       struct regmap *regmap;
+
+       struct regmap_irq_chip_data *irq_data;
+       struct notifier_block nb;
+};
+
+#endif /* MFD_TPS65219_H */