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authorMark Brown <broonie@opensource.wolfsonmicro.com>2011-07-25 23:20:32 +0200
committerLiam Girdwood <lrg@slimlogic.co.uk>2011-07-28 11:20:49 +0200
commitb47ba9fdd336b318a6a6431e6a4556df99272277 (patch)
treededf6af728b6a2ce5167af53f5032fa74abdbc35 /drivers/regulator
parentregulator: Add EPEs to the MODULE_ALIAS() for wm831x-dcdc (diff)
downloadlinux-b47ba9fdd336b318a6a6431e6a4556df99272277.tar.xz
linux-b47ba9fdd336b318a6a6431e6a4556df99272277.zip
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>
Diffstat (limited to 'drivers/regulator')
-rw-r--r--drivers/regulator/wm831x-dcdc.c41
1 files changed, 20 insertions, 21 deletions
diff --git a/drivers/regulator/wm831x-dcdc.c b/drivers/regulator/wm831x-dcdc.c
index 2ee482306784..95249f7a0e39 100644
--- 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)