1 files changed, 51 insertions, 1 deletions

diff --git a/include/linux/regmap.h b/include/linux/regmap.h
index 32043a9749e6..946868c67cd6 100644
--- a/include/linux/regmap.h
+++ b/include/linux/regmap.h
@@ -25,7 +25,7 @@ enum regcache_type {
         REGCACHE_NONE,
         REGCACHE_INDEXED,
         REGCACHE_RBTREE,
-        REGCACHE_LZO
+        REGCACHE_COMPRESSED
 };
 
 /**
@@ -129,6 +129,8 @@ struct regmap *regmap_init_spi(struct spi_device *dev,
                                const struct regmap_config *config);
 
 void regmap_exit(struct regmap *map);
+int regmap_reinit_cache(struct regmap *map,
+                        const struct regmap_config *config);
 int regmap_write(struct regmap *map, unsigned int reg, unsigned int val);
 int regmap_raw_write(struct regmap *map, unsigned int reg,
                      const void *val, size_t val_len);
@@ -145,4 +147,52 @@ void regcache_cache_only(struct regmap *map, bool enable);
 void regcache_cache_bypass(struct regmap *map, bool enable);
 void regcache_mark_dirty(struct regmap *map);
 
+/**
+ * Description of an IRQ for the generic regmap irq_chip.
+ *
+ * @reg_offset: Offset of the status/mask register within the bank
+ * @mask:       Mask used to flag/control the register.
+ */
+struct regmap_irq {
+        unsigned int reg_offset;
+        unsigned int mask;
+};
+
+/**
+ * Description of a generic regmap irq_chip.  This is not intended to
+ * handle every possible interrupt controller, but it should handle a
+ * substantial proportion of those that are found in the wild.
+ *
+ * @name:        Descriptive name for IRQ controller.
+ *
+ * @status_base: Base status register address.
+ * @mask_base:   Base mask register address.
+ * @ack_base:    Base ack address.  If zero then the chip is clear on read.
+ *
+ * @num_regs:    Number of registers in each control bank.
+ * @irqs:        Descriptors for individual IRQs.  Interrupt numbers are
+ *               assigned based on the index in the array of the interrupt.
+ * @num_irqs:    Number of descriptors.
+ */
+struct regmap_irq_chip {
+        const char *name;
+
+        unsigned int status_base;
+        unsigned int mask_base;
+        unsigned int ack_base;
+
+        int num_regs;
+
+        const struct regmap_irq *irqs;
+        int num_irqs;
+};
+
+struct regmap_irq_chip_data;
+
+int regmap_add_irq_chip(struct regmap *map, int irq, int irq_flags,
+                        int irq_base, struct regmap_irq_chip *chip,
+                        struct regmap_irq_chip_data **data);
+void regmap_del_irq_chip(int irq, struct regmap_irq_chip_data *data);
+int regmap_irq_chip_get_base(struct regmap_irq_chip_data *data);
+
 #endif