regulator: ab8500-ext: New driver to control external regulators

The ABx500 is capable of controlling three external regulator supplies.
Most commonly on and off are supported, but if an external regulator
chipset or power supply supports high-power and low-power mode settings,
we can control those too.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 28 insertions, 0 deletions

diff --git a/include/linux/regulator/ab8500.h b/include/linux/regulator/ab8500.h
index 26792ff360be..4e92e5b879a5 100644
--- a/include/linux/regulator/ab8500.h
+++ b/include/linux/regulator/ab8500.h
@@ -10,6 +10,8 @@
 #ifndef __LINUX_MFD_AB8500_REGULATOR_H
 #define __LINUX_MFD_AB8500_REGULATOR_H
 
+#include <linux/platform_device.h>
+
 /* AB8500 regulators */
 enum ab8500_regulator_id {
         AB8500_LDO_AUX1,
@@ -140,11 +142,37 @@ enum ab9540_regulator_reg {
         AB9540_NUM_REGULATOR_REGISTERS,
 };
 
+/* AB8500 external regulators */
+enum ab8500_ext_regulator_id {
+        AB8500_EXT_SUPPLY1,
+        AB8500_EXT_SUPPLY2,
+        AB8500_EXT_SUPPLY3,
+        AB8500_NUM_EXT_REGULATORS,
+};
+
+/* AB8500 regulator platform data */
 struct ab8500_regulator_platform_data {
         int num_reg_init;
         struct ab8500_regulator_reg_init *reg_init;
         int num_regulator;
         struct regulator_init_data *regulator;
+        int num_ext_regulator;
+        struct regulator_init_data *ext_regulator;
 };
 
+/* AB8500 external regulator functions (internal) */
+#ifdef CONFIG_REGULATOR_AB8500_EXT
+int ab8500_ext_regulator_init(struct platform_device *pdev);
+int ab8500_ext_regulator_exit(struct platform_device *pdev);
+#else
+inline int ab8500_ext_regulator_init(struct platform_device *pdev)
+{
+        return 0;
+}
+inline int ab8500_ext_regulator_exit(struct platform_device *pdev)
+{
+        return 0;
+}
+#endif
+
 #endif