regulator: twl4030: add support for external voltage get/set

This is needed for SMPS regulators, which use the OMAP voltage
processor for voltage get/set functions instead of the normal I2C
channel. For this purpose, regulator_init_data->driver_data contents
are expanded, it is now a struct which contains function pointers
for the set/get voltage operations, a data pointer for these, and
the previously used features bitmask.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
Acked-by: Samuel Ortiz <sameo@linux.intel.com> [for the MFD part]
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/include/linux/i2c/twl.h b/include/linux/i2c/twl.h
index 78d3465251d6..08a82d314f24 100644
--- a/include/linux/i2c/twl.h
+++ b/include/linux/i2c/twl.h
@@ -749,6 +749,13 @@ struct twl4030_platform_data {
         struct regulator_init_data              *vio6025;
 };
 
+struct twl_regulator_driver_data {
+        int             (*set_voltage)(void *data, int target_uV);
+        int             (*get_voltage)(void *data);
+        void            *data;
+        unsigned long   features;
+};
+
 /*----------------------------------------------------------------------*/
 
 int twl4030_sih_setup(int module);