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Wysocki" , Danilo Krummrich , Johan Hovold , Victor Chernyakin , Andy Shevchenko Subject: [PATCH v1 1/1] regmap: Add REG_FIELD_GENMASK() helper macro Date: Thu, 5 Nov 2026 11:34:54 +0100 Message-ID: <20261105103533.1426533-1-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.50.1 X-Mailing-List: driver-core@lists.linux.dev List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit One time in regmap and already a few times over the whole kernel the users want to extract a mask from the regmap field data type. Provide a helper and convert regmap core to use it. Others may follow later on. Signed-off-by: Andy Shevchenko --- Inspired by a patch SN1PR12MB25282EC93A27F3577BB9B454A5772@SN1PR12MB2528.namprd12.prod.outlook.com that leaves the driver to handle the custom macro for that. drivers/base/regmap/regmap.c | 2 +- include/linux/regmap.h | 3 +++ 2 files changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c index 83f1f5942135..48e96bc9e7b6 100644 --- a/drivers/base/regmap/regmap.c +++ b/drivers/base/regmap/regmap.c @@ -1215,7 +1215,7 @@ static void regmap_field_init(struct regmap_field *rm_field, rm_field->regmap = regmap; rm_field->reg = reg_field.reg; rm_field->shift = reg_field.lsb; - rm_field->mask = GENMASK(reg_field.msb, reg_field.lsb); + rm_field->mask = REG_FIELD_GENMASK(reg_field); WARN_ONCE(rm_field->mask == 0, "invalid empty mask defined\n"); diff --git a/include/linux/regmap.h b/include/linux/regmap.h index a72f17ab6264..8f3034881f8a 100644 --- a/include/linux/regmap.h +++ b/include/linux/regmap.h @@ -10,6 +10,7 @@ * Author: Mark Brown */ +#include #include #include #include @@ -1477,6 +1478,8 @@ struct reg_field { .id_offset = _offset, \ } +#define REG_FIELD_GENMASK(_reg_field) GENMASK(_reg_field.msb, _reg_field.lsb) + struct regmap_field *regmap_field_alloc(struct regmap *regmap, struct reg_field reg_field); void regmap_field_free(struct regmap_field *field); -- 2.50.1