regulator: core: Allow drivers to pass in a regmap

Since many regulators use regmap for register I/O and since there's quite
a few very common patterns in the code allow drivers to pass in a regmap
to the core for use in generic code.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@ti.com>

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 7943fd6..bca1e59 100644 (file)
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -24,6 +24,7 @@
 #include <linux/suspend.h>
 #include <linux/delay.h>
 #include <linux/of.h>
+#include <linux/regmap.h>
 #include <linux/regulator/of_regulator.h>
 #include <linux/regulator/consumer.h>
 #include <linux/regulator/driver.h>
@@ -2877,6 +2878,7 @@ regulator_register(const struct regulator_desc *regulator_desc,
        rdev->reg_data = config->driver_data;
        rdev->owner = regulator_desc->owner;
        rdev->desc = regulator_desc;
+       rdev->regmap = config->regmap;
        INIT_LIST_HEAD(&rdev->consumer_list);
        INIT_LIST_HEAD(&rdev->list);
        BLOCKING_INIT_NOTIFIER_HEAD(&rdev->notifier);

diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h
index 4f529ed..2e75373 100644 (file)
--- a/include/linux/regulator/driver.h
+++ b/include/linux/regulator/driver.h
@@ -19,6 +19,7 @@
 #include <linux/notifier.h>
 #include <linux/regulator/consumer.h>
 
+struct regmap;
 struct regulator_dev;
 struct regulator_init_data;
 
@@ -187,12 +188,14 @@ struct regulator_desc {
  * @driver_data: private regulator data
  * @of_node: OpenFirmware node to parse for device tree bindings (may be
  *           NULL).
+ * @regmap: regmap to use for core regmap helpers
  */
 struct regulator_config {
        struct device *dev;
        const struct regulator_init_data *init_data;
        void *driver_data;
        struct device_node *of_node;
+       struct regmap *regmap;
 };
 
 /*
@@ -223,6 +226,7 @@ struct regulator_dev {
        struct device dev;
        struct regulation_constraints *constraints;
        struct regulator *supply;       /* for tree */
+       struct regmap *regmap;
 
        struct delayed_work disable_work;
        int deferred_disables;