1 files changed, 31 insertions, 0 deletions

diff --git a/include/linux/regmap.h b/include/linux/regmap.h
index 02d84e24b7c2..eebea9b5f43e 100644
--- a/include/linux/regmap.h
+++ b/include/linux/regmap.h
@@ -23,6 +23,7 @@ struct irq_domain;
 struct spi_device;
 struct regmap;
 struct regmap_range_cfg;
+struct regmap_field;
 
 /* An enum of all the supported cache types */
 enum regcache_type {
@@ -412,6 +413,36 @@ bool regmap_reg_in_ranges(unsigned int reg,
                           unsigned int nranges);
 
 /**
+ * Description of an register field
+ *
+ * @reg: Offset of the register within the regmap bank
+ * @lsb: lsb of the register field.
+ * @reg: msb of the register field.
+ */
+struct reg_field {
+        unsigned int reg;
+        unsigned int lsb;
+        unsigned int msb;
+};
+
+#define REG_FIELD(_reg, _lsb, _msb) {           \
+                                .reg = _reg,    \
+                                .lsb = _lsb,    \
+                                .msb = _msb,    \
+                                }
+
+struct regmap_field *regmap_field_alloc(struct regmap *regmap,
+                struct reg_field reg_field);
+void regmap_field_free(struct regmap_field *field);
+
+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_read(struct regmap_field *field, unsigned int *val);
+int regmap_field_write(struct regmap_field *field, unsigned int val);
+
+/**
  * Description of an IRQ for the generic regmap irq_chip.
  *
  * @reg_offset: Offset of the status/mask register within the bank