regulator: Set up GPIO for WM831x VSEL before enabling VSEL mode

If the VSEL is not in use prior to us starting up then we need to make
sure we initialise the GPIO before we push the DVS control to being done
by the GPIO.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>

diff --git a/drivers/regulator/wm831x-dcdc.c b/drivers/regulator/wm831x-dcdc.c
index 2ee4823067843dac9697d70d3bd68a7e1f2bdfbf..95249f7a0e390c594c6f75496e04b854fd1c96de 100644 (file)
--- a/drivers/regulator/wm831x-dcdc.c
+++ b/drivers/regulator/wm831x-dcdc.c
@@ -456,27 +456,6 @@ static __devinit void wm831x_buckv_dvs_init(struct wm831x_dcdc *dcdc,
        if (!pdata || !pdata->dvs_gpio)
                return;
 
-       switch (pdata->dvs_control_src) {
-       case 1:
-               ctrl = 2 << WM831X_DC1_DVS_SRC_SHIFT;
-               break;
-       case 2:
-               ctrl = 3 << WM831X_DC1_DVS_SRC_SHIFT;
-               break;
-       default:
-               dev_err(wm831x->dev, "Invalid DVS control source %d for %s\n",
-                       pdata->dvs_control_src, dcdc->name);
-               return;
-       }
-
-       ret = wm831x_set_bits(wm831x, dcdc->base + WM831X_DCDC_DVS_CONTROL,
-                             WM831X_DC1_DVS_SRC_MASK, ctrl);
-       if (ret < 0) {
-               dev_err(wm831x->dev, "Failed to set %s DVS source: %d\n",
-                       dcdc->name, ret);
-               return;
-       }
-
        ret = gpio_request(pdata->dvs_gpio, "DCDC DVS");
        if (ret < 0) {
                dev_err(wm831x->dev, "Failed to get %s DVS GPIO: %d\n",
@@ -498,6 +477,26 @@ static __devinit void wm831x_buckv_dvs_init(struct wm831x_dcdc *dcdc,
        }
 
        dcdc->dvs_gpio = pdata->dvs_gpio;
+
+       switch (pdata->dvs_control_src) {
+       case 1:
+               ctrl = 2 << WM831X_DC1_DVS_SRC_SHIFT;
+               break;
+       case 2:
+               ctrl = 3 << WM831X_DC1_DVS_SRC_SHIFT;
+               break;
+       default:
+               dev_err(wm831x->dev, "Invalid DVS control source %d for %s\n",
+                       pdata->dvs_control_src, dcdc->name);
+               return;
+       }
+
+       ret = wm831x_set_bits(wm831x, dcdc->base + WM831X_DCDC_DVS_CONTROL,
+                             WM831X_DC1_DVS_SRC_MASK, ctrl);
+       if (ret < 0) {
+               dev_err(wm831x->dev, "Failed to set %s DVS source: %d\n",
+                       dcdc->name, ret);
+       }
 }
 
 static __devinit int wm831x_buckv_probe(struct platform_device *pdev)