Linux Device Drivers Development

regmap_config structure

struct regmap_config stores the configuration of the regmap during the driver's lifetime. What you set here affects read/write operations. It is the most important structure in the regmap API. The source looks like this:

struct regmap_config { const char *name; int reg_bits; int reg_stride; int pad_bits; int val_bits; bool (*writeable_reg)(struct device *dev, unsigned int reg); bool (*readable_reg)(struct device *dev, unsigned int reg); bool (*volatile_reg)(struct device *dev, unsigned int reg); bool (*precious_reg)(struct device *dev, unsigned int reg); regmap_lock lock; regmap_unlock unlock; void *lock_arg; int (*reg_read)(void *context, unsigned int reg, unsigned int *val); int (*reg_write)(void *context, unsigned ...