regulator: core: Allow drivers to set voltage mapping table in regulator_desc

Some regulator hardware use table based mapping can set volt_table in
regulator_desc and use regulator_list_voltage_table() for their list_voltage
callback.

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

1 files changed, 5 insertions, 0 deletions

diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h
index b0432cc2b169..80226383e561 100644
--- a/include/linux/regulator/driver.h
+++ b/include/linux/regulator/driver.h
@@ -170,6 +170,7 @@ enum regulator_type {
  *
  * @min_uV: Voltage given by the lowest selector (if linear mapping)
  * @uV_step: Voltage increase with each selector (if linear mapping)
+ * @volt_table: Voltage mapping table (if table based mapping)
  *
  * @vsel_reg: Register for selector when using regulator_regmap_X_voltage_
  * @vsel_mask: Mask for register bitfield used for selector
@@ -189,6 +190,8 @@ struct regulator_desc {
         unsigned int min_uV;
         unsigned int uV_step;
 
+        const unsigned int *volt_table;
+
         unsigned int vsel_reg;
         unsigned int vsel_mask;
         unsigned int enable_reg;
@@ -271,6 +274,8 @@ int regulator_mode_to_status(unsigned int);
 
 int regulator_list_voltage_linear(struct regulator_dev *rdev,
                                   unsigned int selector);
+int regulator_list_voltage_table(struct regulator_dev *rdev,
+                                  unsigned int selector);
 int regulator_map_voltage_linear(struct regulator_dev *rdev,
                                   int min_uV, int max_uV);
 int regulator_map_voltage_iterate(struct regulator_dev *rdev,