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>
diff --git a/drivers/mfd/twl-core.c b/drivers/mfd/twl-core.c
index e04e04d..fae5f76 100644
--- a/drivers/mfd/twl-core.c
+++ b/drivers/mfd/twl-core.c
@@ -619,6 +619,8 @@
unsigned num_consumers, unsigned long features)
{
unsigned sub_chip_id;
+ struct twl_regulator_driver_data drv_data;
+
/* regulator framework demands init_data ... */
if (!pdata)
return NULL;
@@ -628,7 +630,19 @@
pdata->num_consumer_supplies = num_consumers;
}
- pdata->driver_data = (void *)features;
+ if (pdata->driver_data) {
+ /* If we have existing drv_data, just add the flags */
+ struct twl_regulator_driver_data *tmp;
+ tmp = pdata->driver_data;
+ tmp->features |= features;
+ } else {
+ /* add new driver data struct, used only during init */
+ drv_data.features = features;
+ drv_data.set_voltage = NULL;
+ drv_data.get_voltage = NULL;
+ drv_data.data = NULL;
+ pdata->driver_data = &drv_data;
+ }
/* NOTE: we currently ignore regulator IRQs, e.g. for short circuits */
sub_chip_id = twl_map[TWL_MODULE_PM_MASTER].sid;