| Message ID | 20221207173716.123223-4-saravanan@linumiz.com |
|---|---|
| State | Accepted |
| Commit | 61d1eb025b237e29cdae0d12bc9feb56cd703bdb |
| Headers | show |
| Series | Add support for mpq7932 PMIC IC | expand |
On Wed, Dec 07, 2022 at 06:37:15PM +0100, Saravanan Sekar wrote: > The MPQ7932 is a power management IC designed to operate from 5V buses to > power a variety of Advanced driver-assistance system SOCs. Six integrated > buck converters with hardware monitoring capability powers a variety of > target rails configurable over PMBus interface. > > Signed-off-by: Saravanan Sekar <saravanan@linumiz.com> Applied to hwmon-next, after changing multi-line comments. Guenter > --- > drivers/hwmon/pmbus/Kconfig | 16 ++++ > drivers/hwmon/pmbus/Makefile | 1 + > drivers/hwmon/pmbus/mpq7932.c | 153 ++++++++++++++++++++++++++++++++++ > 3 files changed, 170 insertions(+) > create mode 100644 drivers/hwmon/pmbus/mpq7932.c > > diff --git a/drivers/hwmon/pmbus/Kconfig b/drivers/hwmon/pmbus/Kconfig > index 89668af67206..30448e049486 100644 > --- a/drivers/hwmon/pmbus/Kconfig > +++ b/drivers/hwmon/pmbus/Kconfig > @@ -317,6 +317,22 @@ config SENSORS_MP5023 > This driver can also be built as a module. If so, the module will > be called mp5023. > > +config SENSORS_MPQ7932_REGULATOR > + bool "Regulator support for MPQ7932" > + depends on SENSORS_MPQ7932 && REGULATOR > + help > + If you say yes here you get six integrated buck converter regulator > + support for power management IC MPS MPQ7932. > + > +config SENSORS_MPQ7932 > + tristate "MPS MPQ7932" > + help > + If you say yes here you get hardware monitoring functionality support > + for power management IC MPS MPQ7932. > + > + This driver can also be built as a module. If so, the module will > + be called mpq7932. > + > config SENSORS_PIM4328 > tristate "Flex PIM4328 and compatibles" > help > diff --git a/drivers/hwmon/pmbus/Makefile b/drivers/hwmon/pmbus/Makefile > index 0002dbe22d52..d9d2fa4bd6f7 100644 > --- a/drivers/hwmon/pmbus/Makefile > +++ b/drivers/hwmon/pmbus/Makefile > @@ -34,6 +34,7 @@ obj-$(CONFIG_SENSORS_MAX8688) += max8688.o > obj-$(CONFIG_SENSORS_MP2888) += mp2888.o > obj-$(CONFIG_SENSORS_MP2975) += mp2975.o > obj-$(CONFIG_SENSORS_MP5023) += mp5023.o > +obj-$(CONFIG_SENSORS_MPQ7932) += mpq7932.o > obj-$(CONFIG_SENSORS_PLI1209BC) += pli1209bc.o > obj-$(CONFIG_SENSORS_PM6764TR) += pm6764tr.o > obj-$(CONFIG_SENSORS_PXE1610) += pxe1610.o > diff --git a/drivers/hwmon/pmbus/mpq7932.c b/drivers/hwmon/pmbus/mpq7932.c > new file mode 100644 > index 000000000000..1dc1ab71957b > --- /dev/null > +++ b/drivers/hwmon/pmbus/mpq7932.c > @@ -0,0 +1,153 @@ > +// SPDX-License-Identifier: GPL-2.0+ > +/* > + * mpq7932.c - hwmon with optional regulator driver for mps mpq7932 > + * Copyright 2022 Monolithic Power Systems, Inc > + * > + * Author: Saravanan Sekar <saravanan@linumiz.com> > + */ > + > +#include <linux/bits.h> > +#include <linux/err.h> > +#include <linux/i2c.h> > +#include <linux/init.h> > +#include <linux/kernel.h> > +#include <linux/module.h> > +#include <linux/of_device.h> > +#include <linux/pmbus.h> > +#include "pmbus.h" > + > +#define MPQ7932_BUCK_UV_MIN 206250 > +#define MPQ7932_UV_STEP 6250 > +#define MPQ7932_N_VOLTAGES 256 > +#define MPQ7932_VOUT_MAX 0xFF > +#define MPQ7932_NUM_PAGES 6 > + > +#define MPQ7932_TON_DELAY 0x60 > +#define MPQ7932_VOUT_STARTUP_SLEW 0xA3 > +#define MPQ7932_VOUT_SHUTDOWN_SLEW 0xA5 > +#define MPQ7932_VOUT_SLEW_MASK GENMASK(1, 0) > +#define MPQ7932_TON_DELAY_MASK GENMASK(4, 0) > + > +struct mpq7932_data { > + struct pmbus_driver_info info; > + struct pmbus_platform_data pdata; > +}; > + > +#if IS_ENABLED(CONFIG_SENSORS_MPQ7932_REGULATOR) > +static struct regulator_desc mpq7932_regulators_desc[] = { > + PMBUS_REGULATOR_STEP("buck", 0, MPQ7932_N_VOLTAGES, > + MPQ7932_UV_STEP, MPQ7932_BUCK_UV_MIN), > + PMBUS_REGULATOR_STEP("buck", 1, MPQ7932_N_VOLTAGES, > + MPQ7932_UV_STEP, MPQ7932_BUCK_UV_MIN), > + PMBUS_REGULATOR_STEP("buck", 2, MPQ7932_N_VOLTAGES, > + MPQ7932_UV_STEP, MPQ7932_BUCK_UV_MIN), > + PMBUS_REGULATOR_STEP("buck", 3, MPQ7932_N_VOLTAGES, > + MPQ7932_UV_STEP, MPQ7932_BUCK_UV_MIN), > + PMBUS_REGULATOR_STEP("buck", 4, MPQ7932_N_VOLTAGES, > + MPQ7932_UV_STEP, MPQ7932_BUCK_UV_MIN), > + PMBUS_REGULATOR_STEP("buck", 5, MPQ7932_N_VOLTAGES, > + MPQ7932_UV_STEP, MPQ7932_BUCK_UV_MIN), > +}; > +#endif > + > +static int mpq7932_write_word_data(struct i2c_client *client, int page, int reg, > + u16 word) > +{ > + switch (reg) { > + /* chip support only byte access for VOUT_COMMAND otherwise > + * results -EREMOTEIO > + */ /* * We do not use or accept networking-style multi-line comments in the hwmon * subsystem. */ > + case PMBUS_VOUT_COMMAND: > + return pmbus_write_byte_data(client, page, reg, word & 0xFF); > + > + default: > + return -ENODATA; > + } > +} > + > +static int mpq7932_read_word_data(struct i2c_client *client, int page, > + int phase, int reg) > +{ > + switch (reg) { > + /* chip support neither (PMBUS_VOUT_MARGIN_HIGH, PMBUS_VOUT_MARGIN_LOW) > + * nor (PMBUS_MFR_VOUT_MIN, PMBUS_MFR_VOUT_MAX). As a result set voltage > + * fails due to error in pmbus_regulator_get_low_margin, so faked. > + */ > + case PMBUS_MFR_VOUT_MIN: > + return 0; > + > + case PMBUS_MFR_VOUT_MAX: > + return MPQ7932_VOUT_MAX; > + > + /* chip support only byte access for VOUT_COMMAND otherwise > + * results -EREMOTEIO > + */ > + case PMBUS_READ_VOUT: > + return pmbus_read_byte_data(client, page, PMBUS_VOUT_COMMAND); > + > + default: > + return -ENODATA; > + } > +} > + > +static int mpq7932_probe(struct i2c_client *client) > +{ > + struct mpq7932_data *data; > + struct pmbus_driver_info *info; > + struct device *dev = &client->dev; > + int i; > + > + data = devm_kzalloc(dev, sizeof(struct mpq7932_data), GFP_KERNEL); > + if (!data) > + return -ENOMEM; > + > + info = &data->info; > + info->pages = MPQ7932_NUM_PAGES; > + info->format[PSC_VOLTAGE_OUT] = direct; > + info->m[PSC_VOLTAGE_OUT] = 160; > + info->b[PSC_VOLTAGE_OUT] = -33; > + for (i = 0; i < info->pages; i++) { > + info->func[i] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT > + | PMBUS_HAVE_STATUS_TEMP; > + } > + > +#if IS_ENABLED(CONFIG_SENSORS_MPQ7932_REGULATOR) > + info->num_regulators = ARRAY_SIZE(mpq7932_regulators_desc); > + info->reg_desc = mpq7932_regulators_desc; > +#endif > + > + info->read_word_data = mpq7932_read_word_data; > + info->write_word_data = mpq7932_write_word_data; > + > + data->pdata.flags = PMBUS_NO_CAPABILITY; > + dev->platform_data = &data->pdata; > + > + return pmbus_do_probe(client, info); > +} > + > +static const struct of_device_id mpq7932_of_match[] = { > + { .compatible = "mps,mpq7932"}, > + {}, > +}; > +MODULE_DEVICE_TABLE(of, mpq7932_of_match); > + > +static const struct i2c_device_id mpq7932_id[] = { > + { "mpq7932", }, > + { }, > +}; > +MODULE_DEVICE_TABLE(i2c, mpq7932_id); > + > +static struct i2c_driver mpq7932_regulator_driver = { > + .driver = { > + .name = "mpq7932", > + .of_match_table = mpq7932_of_match, > + }, > + .probe_new = mpq7932_probe, > + .id_table = mpq7932_id, > +}; > +module_i2c_driver(mpq7932_regulator_driver); > + > +MODULE_AUTHOR("Saravanan Sekar <saravanan@linumiz.com>"); > +MODULE_DESCRIPTION("MPQ7932 PMIC regulator driver"); > +MODULE_LICENSE("GPL"); > +MODULE_IMPORT_NS(PMBUS);
diff --git a/drivers/hwmon/pmbus/Kconfig b/drivers/hwmon/pmbus/Kconfig index 89668af67206..30448e049486 100644 --- a/drivers/hwmon/pmbus/Kconfig +++ b/drivers/hwmon/pmbus/Kconfig @@ -317,6 +317,22 @@ config SENSORS_MP5023 This driver can also be built as a module. If so, the module will be called mp5023. +config SENSORS_MPQ7932_REGULATOR + bool "Regulator support for MPQ7932" + depends on SENSORS_MPQ7932 && REGULATOR + help + If you say yes here you get six integrated buck converter regulator + support for power management IC MPS MPQ7932. + +config SENSORS_MPQ7932 + tristate "MPS MPQ7932" + help + If you say yes here you get hardware monitoring functionality support + for power management IC MPS MPQ7932. + + This driver can also be built as a module. If so, the module will + be called mpq7932. + config SENSORS_PIM4328 tristate "Flex PIM4328 and compatibles" help diff --git a/drivers/hwmon/pmbus/Makefile b/drivers/hwmon/pmbus/Makefile index 0002dbe22d52..d9d2fa4bd6f7 100644 --- a/drivers/hwmon/pmbus/Makefile +++ b/drivers/hwmon/pmbus/Makefile @@ -34,6 +34,7 @@ obj-$(CONFIG_SENSORS_MAX8688) += max8688.o obj-$(CONFIG_SENSORS_MP2888) += mp2888.o obj-$(CONFIG_SENSORS_MP2975) += mp2975.o obj-$(CONFIG_SENSORS_MP5023) += mp5023.o +obj-$(CONFIG_SENSORS_MPQ7932) += mpq7932.o obj-$(CONFIG_SENSORS_PLI1209BC) += pli1209bc.o obj-$(CONFIG_SENSORS_PM6764TR) += pm6764tr.o obj-$(CONFIG_SENSORS_PXE1610) += pxe1610.o diff --git a/drivers/hwmon/pmbus/mpq7932.c b/drivers/hwmon/pmbus/mpq7932.c new file mode 100644 index 000000000000..1dc1ab71957b --- /dev/null +++ b/drivers/hwmon/pmbus/mpq7932.c @@ -0,0 +1,153 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * mpq7932.c - hwmon with optional regulator driver for mps mpq7932 + * Copyright 2022 Monolithic Power Systems, Inc + * + * Author: Saravanan Sekar <saravanan@linumiz.com> + */ + +#include <linux/bits.h> +#include <linux/err.h> +#include <linux/i2c.h> +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/of_device.h> +#include <linux/pmbus.h> +#include "pmbus.h" + +#define MPQ7932_BUCK_UV_MIN 206250 +#define MPQ7932_UV_STEP 6250 +#define MPQ7932_N_VOLTAGES 256 +#define MPQ7932_VOUT_MAX 0xFF +#define MPQ7932_NUM_PAGES 6 + +#define MPQ7932_TON_DELAY 0x60 +#define MPQ7932_VOUT_STARTUP_SLEW 0xA3 +#define MPQ7932_VOUT_SHUTDOWN_SLEW 0xA5 +#define MPQ7932_VOUT_SLEW_MASK GENMASK(1, 0) +#define MPQ7932_TON_DELAY_MASK GENMASK(4, 0) + +struct mpq7932_data { + struct pmbus_driver_info info; + struct pmbus_platform_data pdata; +}; + +#if IS_ENABLED(CONFIG_SENSORS_MPQ7932_REGULATOR) +static struct regulator_desc mpq7932_regulators_desc[] = { + PMBUS_REGULATOR_STEP("buck", 0, MPQ7932_N_VOLTAGES, + MPQ7932_UV_STEP, MPQ7932_BUCK_UV_MIN), + PMBUS_REGULATOR_STEP("buck", 1, MPQ7932_N_VOLTAGES, + MPQ7932_UV_STEP, MPQ7932_BUCK_UV_MIN), + PMBUS_REGULATOR_STEP("buck", 2, MPQ7932_N_VOLTAGES, + MPQ7932_UV_STEP, MPQ7932_BUCK_UV_MIN), + PMBUS_REGULATOR_STEP("buck", 3, MPQ7932_N_VOLTAGES, + MPQ7932_UV_STEP, MPQ7932_BUCK_UV_MIN), + PMBUS_REGULATOR_STEP("buck", 4, MPQ7932_N_VOLTAGES, + MPQ7932_UV_STEP, MPQ7932_BUCK_UV_MIN), + PMBUS_REGULATOR_STEP("buck", 5, MPQ7932_N_VOLTAGES, + MPQ7932_UV_STEP, MPQ7932_BUCK_UV_MIN), +}; +#endif + +static int mpq7932_write_word_data(struct i2c_client *client, int page, int reg, + u16 word) +{ + switch (reg) { + /* chip support only byte access for VOUT_COMMAND otherwise + * results -EREMOTEIO + */ + case PMBUS_VOUT_COMMAND: + return pmbus_write_byte_data(client, page, reg, word & 0xFF); + + default: + return -ENODATA; + } +} + +static int mpq7932_read_word_data(struct i2c_client *client, int page, + int phase, int reg) +{ + switch (reg) { + /* chip support neither (PMBUS_VOUT_MARGIN_HIGH, PMBUS_VOUT_MARGIN_LOW) + * nor (PMBUS_MFR_VOUT_MIN, PMBUS_MFR_VOUT_MAX). As a result set voltage + * fails due to error in pmbus_regulator_get_low_margin, so faked. + */ + case PMBUS_MFR_VOUT_MIN: + return 0; + + case PMBUS_MFR_VOUT_MAX: + return MPQ7932_VOUT_MAX; + + /* chip support only byte access for VOUT_COMMAND otherwise + * results -EREMOTEIO + */ + case PMBUS_READ_VOUT: + return pmbus_read_byte_data(client, page, PMBUS_VOUT_COMMAND); + + default: + return -ENODATA; + } +} + +static int mpq7932_probe(struct i2c_client *client) +{ + struct mpq7932_data *data; + struct pmbus_driver_info *info; + struct device *dev = &client->dev; + int i; + + data = devm_kzalloc(dev, sizeof(struct mpq7932_data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + info = &data->info; + info->pages = MPQ7932_NUM_PAGES; + info->format[PSC_VOLTAGE_OUT] = direct; + info->m[PSC_VOLTAGE_OUT] = 160; + info->b[PSC_VOLTAGE_OUT] = -33; + for (i = 0; i < info->pages; i++) { + info->func[i] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT + | PMBUS_HAVE_STATUS_TEMP; + } + +#if IS_ENABLED(CONFIG_SENSORS_MPQ7932_REGULATOR) + info->num_regulators = ARRAY_SIZE(mpq7932_regulators_desc); + info->reg_desc = mpq7932_regulators_desc; +#endif + + info->read_word_data = mpq7932_read_word_data; + info->write_word_data = mpq7932_write_word_data; + + data->pdata.flags = PMBUS_NO_CAPABILITY; + dev->platform_data = &data->pdata; + + return pmbus_do_probe(client, info); +} + +static const struct of_device_id mpq7932_of_match[] = { + { .compatible = "mps,mpq7932"}, + {}, +}; +MODULE_DEVICE_TABLE(of, mpq7932_of_match); + +static const struct i2c_device_id mpq7932_id[] = { + { "mpq7932", }, + { }, +}; +MODULE_DEVICE_TABLE(i2c, mpq7932_id); + +static struct i2c_driver mpq7932_regulator_driver = { + .driver = { + .name = "mpq7932", + .of_match_table = mpq7932_of_match, + }, + .probe_new = mpq7932_probe, + .id_table = mpq7932_id, +}; +module_i2c_driver(mpq7932_regulator_driver); + +MODULE_AUTHOR("Saravanan Sekar <saravanan@linumiz.com>"); +MODULE_DESCRIPTION("MPQ7932 PMIC regulator driver"); +MODULE_LICENSE("GPL"); +MODULE_IMPORT_NS(PMBUS);
The MPQ7932 is a power management IC designed to operate from 5V buses to power a variety of Advanced driver-assistance system SOCs. Six integrated buck converters with hardware monitoring capability powers a variety of target rails configurable over PMBus interface. Signed-off-by: Saravanan Sekar <saravanan@linumiz.com> --- drivers/hwmon/pmbus/Kconfig | 16 ++++ drivers/hwmon/pmbus/Makefile | 1 + drivers/hwmon/pmbus/mpq7932.c | 153 ++++++++++++++++++++++++++++++++++ 3 files changed, 170 insertions(+) create mode 100644 drivers/hwmon/pmbus/mpq7932.c