On Mon, Feb 21, 2022 at 10:42:07AM +0100, Marcello Sylvester Bauer wrote:
> Add regulator support for PLI1209BC Digital Supervisor.
>
> Signed-off-by: Marcello Sylvester Bauer <sylv@xxxxxxx>
Applied to hwmon-next.
Thanks,
Guenter
> ---
> drivers/hwmon/pmbus/Kconfig | 7 +++++++
> drivers/hwmon/pmbus/pli1209bc.c | 31 +++++++++++++++++++++++++++++++
> 2 files changed, 38 insertions(+)
>
> diff --git a/drivers/hwmon/pmbus/Kconfig b/drivers/hwmon/pmbus/Kconfig
> index f18f67a94697..6552467c588d 100644
> --- a/drivers/hwmon/pmbus/Kconfig
> +++ b/drivers/hwmon/pmbus/Kconfig
> @@ -326,6 +326,13 @@ config SENSORS_PLI1209BC
> This driver can also be built as a module. If so, the module will
> be called pli1209bc.
>
> +config SENSORS_PLI1209BC_REGULATOR
> + bool "Regulator support for PLI1209BC"
> + depends on SENSORS_PLI1209BC && REGULATOR
> + help
> + If you say yes here you get regulator support for Vicor PLI1209BC
> + Digital Supervisor.
> +
> config SENSORS_PM6764TR
> tristate "ST PM6764TR"
> help
> diff --git a/drivers/hwmon/pmbus/pli1209bc.c b/drivers/hwmon/pmbus/pli1209bc.c
> index 5f8847307e55..05b4ee35ba27 100644
> --- a/drivers/hwmon/pmbus/pli1209bc.c
> +++ b/drivers/hwmon/pmbus/pli1209bc.c
> @@ -8,6 +8,7 @@
> #include <linux/i2c.h>
> #include <linux/module.h>
> #include <linux/pmbus.h>
> +#include <linux/regulator/driver.h>
> #include "pmbus.h"
>
> /*
> @@ -33,11 +34,37 @@ static int pli1209bc_read_word_data(struct i2c_client *client, int page,
> return data;
> data = sign_extend32(data, 15) * 10;
> return clamp_val(data, -32768, 32767) & 0xffff;
> + /*
> + * PMBUS_READ_VOUT and PMBUS_READ_TEMPERATURE_1 return invalid data
> + * when the BCM is turned off. Since it is not possible to return
> + * ENODATA error, return zero instead.
> + */
> + case PMBUS_READ_VOUT:
> + case PMBUS_READ_TEMPERATURE_1:
> + data = pmbus_read_word_data(client, page, phase,
> + PMBUS_STATUS_WORD);
> + if (data < 0)
> + return data;
> + if (data & PB_STATUS_POWER_GOOD_N)
> + return 0;
> + return pmbus_read_word_data(client, page, phase, reg);
> default:
> return -ENODATA;
> }
> }
>
> +#if IS_ENABLED(CONFIG_SENSORS_PLI1209BC_REGULATOR)
> +static const struct regulator_desc pli1209bc_reg_desc = {
> + .name = "vout2",
> + .id = 1,
> + .of_match = of_match_ptr("vout2"),
> + .regulators_node = of_match_ptr("regulators"),
> + .ops = &pmbus_regulator_ops,
> + .type = REGULATOR_VOLTAGE,
> + .owner = THIS_MODULE,
> +};
> +#endif
> +
> static struct pmbus_driver_info pli1209bc_info = {
> .pages = 2,
> .format[PSC_VOLTAGE_IN] = direct,
> @@ -75,6 +102,10 @@ static struct pmbus_driver_info pli1209bc_info = {
> | PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP
> | PMBUS_HAVE_STATUS_IOUT | PMBUS_HAVE_STATUS_INPUT,
> .read_word_data = pli1209bc_read_word_data,
> +#if IS_ENABLED(CONFIG_SENSORS_PLI1209BC_REGULATOR)
> + .num_regulators = 1,
> + .reg_desc = &pli1209bc_reg_desc,
> +#endif
> };
>
> static int pli1209bc_probe(struct i2c_client *client)
