diff options
| -rw-r--r-- | drivers/base/regmap/regmap.c | 100 | ||||
| -rw-r--r-- | include/linux/regmap.h | 11 |
2 files changed, 111 insertions, 0 deletions
diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c index 5a121bee530c..b65e8338243f 100644 --- a/drivers/base/regmap/regmap.c +++ b/drivers/base/regmap/regmap.c @@ -1254,6 +1254,106 @@ struct regmap_field *devm_regmap_field_alloc(struct device *dev, } EXPORT_SYMBOL_GPL(devm_regmap_field_alloc); + +/** + * regmap_field_bulk_alloc() - Allocate and initialise a bulk register field. + * + * @regmap: regmap bank in which this register field is located. + * @rm_field: regmap register fields within the bank. + * @reg_field: Register fields within the bank. + * @num_fields: Number of register fields. + * + * The return value will be an -ENOMEM on error or zero for success. + * Newly allocated regmap_fields should be freed by calling + * regmap_field_bulk_free() + */ +int regmap_field_bulk_alloc(struct regmap *regmap, + struct regmap_field **rm_field, + struct reg_field *reg_field, + int num_fields) +{ + struct regmap_field *rf; + int i; + + rf = kcalloc(num_fields, sizeof(*rf), GFP_KERNEL); + if (!rf) + return -ENOMEM; + + for (i = 0; i < num_fields; i++) { + regmap_field_init(&rf[i], regmap, reg_field[i]); + rm_field[i] = &rf[i]; + } + + return 0; +} +EXPORT_SYMBOL_GPL(regmap_field_bulk_alloc); + +/** + * devm_regmap_field_bulk_alloc() - Allocate and initialise a bulk register + * fields. + * + * @dev: Device that will be interacted with + * @regmap: regmap bank in which this register field is located. + * @rm_field: regmap register fields within the bank. + * @reg_field: Register fields within the bank. + * @num_fields: Number of register fields. + * + * The return value will be an -ENOMEM on error or zero for success. + * Newly allocated regmap_fields will be automatically freed by the + * device management code. + */ +int devm_regmap_field_bulk_alloc(struct device *dev, + struct regmap *regmap, + struct regmap_field **rm_field, + struct reg_field *reg_field, + int num_fields) +{ + struct regmap_field *rf; + int i; + + rf = devm_kcalloc(dev, num_fields, sizeof(*rf), GFP_KERNEL); + if (!rf) + return -ENOMEM; + + for (i = 0; i < num_fields; i++) { + regmap_field_init(&rf[i], regmap, reg_field[i]); + rm_field[i] = &rf[i]; + } + + return 0; +} +EXPORT_SYMBOL_GPL(devm_regmap_field_bulk_alloc); + +/** + * regmap_field_bulk_free() - Free register field allocated using + * regmap_field_bulk_alloc. + * + * @field: regmap fields which should be freed. + */ +void regmap_field_bulk_free(struct regmap_field *field) +{ + kfree(field); +} +EXPORT_SYMBOL_GPL(regmap_field_bulk_free); + +/** + * devm_regmap_field_bulk_free() - Free a bulk register field allocated using + * devm_regmap_field_bulk_alloc. + * + * @dev: Device that will be interacted with + * @field: regmap field which should be freed. + * + * Free register field allocated using devm_regmap_field_bulk_alloc(). Usually + * drivers need not call this function, as the memory allocated via devm + * will be freed as per device-driver life-cycle. + */ +void devm_regmap_field_bulk_free(struct device *dev, + struct regmap_field *field) +{ + devm_kfree(dev, field); +} +EXPORT_SYMBOL_GPL(devm_regmap_field_bulk_free); + /** * devm_regmap_field_free() - Free a register field allocated using * devm_regmap_field_alloc. diff --git a/include/linux/regmap.h b/include/linux/regmap.h index 0c49d59168b5..a35ec0a0d6e0 100644 --- a/include/linux/regmap.h +++ b/include/linux/regmap.h @@ -1189,6 +1189,17 @@ struct regmap_field *devm_regmap_field_alloc(struct device *dev, struct regmap *regmap, struct reg_field reg_field); void devm_regmap_field_free(struct device *dev, struct regmap_field *field); +int regmap_field_bulk_alloc(struct regmap *regmap, + struct regmap_field **rm_field, + struct reg_field *reg_field, + int num_fields); +void regmap_field_bulk_free(struct regmap_field *field); +int devm_regmap_field_bulk_alloc(struct device *dev, struct regmap *regmap, + struct regmap_field **field, + struct reg_field *reg_field, int num_fields); +void devm_regmap_field_bulk_free(struct device *dev, + struct regmap_field *field); + int regmap_field_read(struct regmap_field *field, unsigned int *val); int regmap_field_update_bits_base(struct regmap_field *field, unsigned int mask, unsigned int val, |