regmap_test_bits(9)

💖 NAME 💖

okay so bestie, welcome to regmap_test_bits(9) from the Kernel API Manual ✨ this one is literally here to check if all specified bits are set in a register. periodt 💅

🎀 SYNOPSIS 🎀

int regmap_test_bits (struct regmap *map , unsigned int reg , unsigned
       int bits );

🦋 ARGUMENTS 🦋

• map — the register map we're operating on, the main character of this whole situation 💫
• reg — the register to read from, aka the spot we're checking
• bits — the bits to test, the little squad we're looking for 👑

🌸 DESCRIPTION 🌸

So here's the vibe check, bestie: this returns 0 if at least one of the tested bits is not set. It returns 1 if all tested bits are set. And if the underlying regmap_read fails, it returns a negative error number 😭 no cap.

That's the whole story. Short, sweet, and absolutely iconic ✨

🔥 SEE ALSO 🔥

Kernel file ./drivers/base/regmap/regmap.c

• devm_regmap_field_alloc(9)
• regmap_field_bulk_alloc(9)
• devm_regmap_field_bulk_alloc(9)
• regmap_field_bulk_free(9)
• devm_regmap_field_bulk_free(9)
• devm_regmap_field_free(9)
• regmap_field_alloc(9)
• regmap_field_free(9)
• regmap_reinit_cache(9)
• regmap_exit(9)
• dev_get_regmap(9)
• regmap_get_device(9)
• regmap_can_raw_write(9)
• regmap_get_raw_read_max(9)
• regmap_get_raw_write_max(9)
• regmap_write(9)
• regmap_write_async(9)
• regmap_raw_write(9)
• regmap_noinc_write(9)
• regmap_field_update_bits_base(9)
• regmap_field_test_bits(9)
• regmap_fields_update_bits_base(9)
• regmap_bulk_write(9)
• regmap_multi_reg_write(9)
• regmap_multi_reg_write_bypassed(9)
• regmap_raw_write_async(9)
• regmap_read(9)
• regmap_read_bypassed(9)
• regmap_raw_read(9)
• regmap_noinc_read(9)
• regmap_field_read(9)
• regmap_fields_read(9)
• regmap_bulk_read(9)
• regmap_multi_reg_read(9)
• regmap_update_bits_base(9)
• regmap_async_complete(9)
• regmap_register_patch(9)
• regmap_get_val_bytes(9)
• regmap_get_max_register(9)
• regmap_get_reg_stride(9)
• regmap_might_sleep(9)

Cute little sign-off: source/version is ./drivers/base/regmap, the date is October 2026, and this whole page is regmap_test_bits(9) 🫶✨💖