regulator_count_voltages(9)

💖 regulator_count_voltages 💖

okay bestie, this is the Kernel API Manual page for regulator_count_voltages — yes it's a whole mouthful, and yes it ate 💅✨

🌸 NAME 🌸

regulator_count_voltages — count regulator_list_voltage() selectors. literally that's the whole vibe 🫶

✨ SYNOPSIS ✨

int regulator_count_voltages (struct regulator *regulator );

🎀 ARGUMENTS 🎀

• regulator — regulator source. that's the one and only argument, bestie 💖

🔥 RETURN 🔥

Number of selectors for regulator, or negative error number. no cap — if it's negative, something went sideways 😭

💅 DESCRIPTION 💅

Selectors are numbered starting at zero, and typically correspond to bitfields in hardware registers. so like index 0, 1, 2… and they map to hardware register bitfields, iykyk 🧚✨

🦋 SEE ALSO 🦋

Kernel file ./drivers/regulator/core.c is the source, and the whole regulator friend group is here:

• regulator_lock_nested(9), regulator_lock(9), regulator_unlock(9), regulator_lock_two(9), regulator_unlock_two(9), regulator_unlock_dependent(9), regulator_lock_dependent(9)
• set_machine_constraints(9), regulator_event_work_fn(9), regulator_event_forward_notifier(9), register_regulator_event_forwarding(9), set_supply(9), set_consumer_device_supply(9), regulator_dev_lookup(9)
• _regulator_get_common(9), regulator_get(9), regulator_get_exclusive(9), regulator_get_optional(9), regulator_put(9), regulator_register_supply_alias(9), regulator_unregister_supply_alias(9)
• regulator_bulk_register_supply_alias(9), regulator_bulk_unregister_supply_alias(9), regulator_ena_gpio_ctrl(9), _regulator_check_status_enabled(9), _regulator_handle_consumer_enable(9), _regulator_handle_consumer_disable(9)
• regulator_enable(9), regulator_disable(9), regulator_force_disable(9), regulator_disable_deferred(9), regulator_is_enabled(9), regulator_list_voltage(9), regulator_get_regmap(9)
• regulator_get_hardware_vsel_register(9), regulator_list_hardware_vsel(9), regulator_hardware_enable(9), regulator_get_linear_step(9), regulator_is_supported_voltage(9), regulator_set_voltage(9)
• regulator_set_voltage_time(9), regulator_set_voltage_time_sel(9), regulator_sync_voltage(9), regulator_get_voltage(9), regulator_set_current_limit(9), regulator_get_current_limit(9)
• regulator_get_unclaimed_power_budget(9), regulator_request_power_budget(9), regulator_free_power_budget(9), regulator_set_mode(9), regulator_get_mode(9), regulator_get_error_flags(9)
• regulator_set_load(9), regulator_allow_bypass(9), regulator_register_notifier(9), regulator_unregister_notifier(9), regulator_bulk_get(9), regulator_bulk_enable(9)
• regulator_bulk_disable(9), regulator_bulk_force_disable(9), regulator_bulk_free(9), regulator_handle_critical(9), regulator_notifier_call_chain(9), regulator_mode_to_status(9)
• regulator_register(9), regulator_unregister(9), regulator_suspend(9), regulator_has_full_constraints(9), rdev_get_drvdata(9), regulator_get_drvdata(9), regulator_set_drvdata(9), rdev_get_id(9)

that's the whole page, bestie 🫶 source/version: ./drivers/regulator · date: October 2026 · page: regulator_count_voltages(9) — mwah 💋✨