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authorMark Brown <broonie@opensource.wolfsonmicro.com>2011-06-02 19:18:49 +0100
committerSamuel Ortiz <sameo@linux.intel.com>2011-07-31 23:28:19 +0200
commit266a5e02fe2690637b2318c9fc5c3513937128f4 (patch)
tree1f531de03568ef9b78ae67f2204f481c1e9eb582
parenteb503dc16b04d07a42a37892da73c74461fd06da (diff)
downloadop-kernel-dev-266a5e02fe2690637b2318c9fc5c3513937128f4.zip
op-kernel-dev-266a5e02fe2690637b2318c9fc5c3513937128f4.tar.gz
mfd: Allow touchscreen to be disabled on wm831x devices
Allow platform data to flag the touchscreen as disabled so that if the touch driver is built in we don't end up causing lots of work by spuriously detecting touchscreen activity on systems where it isn't in use. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
-rw-r--r--drivers/mfd/wm831x-core.c27
-rw-r--r--include/linux/mfd/wm831x/pdata.h3
2 files changed, 20 insertions, 10 deletions
diff --git a/drivers/mfd/wm831x-core.c b/drivers/mfd/wm831x-core.c
index 04994b2..ff57a16 100644
--- a/drivers/mfd/wm831x-core.c
+++ b/drivers/mfd/wm831x-core.c
@@ -1125,11 +1125,6 @@ static struct mfd_cell wm8311_devs[] = {
.resources = wm831x_status2_resources,
},
{
- .name = "wm831x-touch",
- .num_resources = ARRAY_SIZE(wm831x_touch_resources),
- .resources = wm831x_touch_resources,
- },
- {
.name = "wm831x-watchdog",
.num_resources = ARRAY_SIZE(wm831x_wdt_resources),
.resources = wm831x_wdt_resources,
@@ -1286,11 +1281,6 @@ static struct mfd_cell wm8312_devs[] = {
.resources = wm831x_status2_resources,
},
{
- .name = "wm831x-touch",
- .num_resources = ARRAY_SIZE(wm831x_touch_resources),
- .resources = wm831x_touch_resources,
- },
- {
.name = "wm831x-watchdog",
.num_resources = ARRAY_SIZE(wm831x_wdt_resources),
.resources = wm831x_wdt_resources,
@@ -1428,6 +1418,15 @@ static struct mfd_cell wm8320_devs[] = {
},
};
+static struct mfd_cell touch_devs[] = {
+ {
+ .name = "wm831x-touch",
+ .num_resources = ARRAY_SIZE(wm831x_touch_resources),
+ .resources = wm831x_touch_resources,
+ },
+};
+
+
static struct mfd_cell backlight_devs[] = {
{
.name = "wm831x-backlight",
@@ -1624,12 +1623,20 @@ int wm831x_device_init(struct wm831x *wm831x, unsigned long id, int irq)
ret = mfd_add_devices(wm831x->dev, wm831x_num,
wm8311_devs, ARRAY_SIZE(wm8311_devs),
NULL, wm831x->irq_base);
+ if (!pdata || !pdata->disable_touch)
+ mfd_add_devices(wm831x->dev, wm831x_num,
+ touch_devs, ARRAY_SIZE(touch_devs),
+ NULL, wm831x->irq_base);
break;
case WM8312:
ret = mfd_add_devices(wm831x->dev, wm831x_num,
wm8312_devs, ARRAY_SIZE(wm8312_devs),
NULL, wm831x->irq_base);
+ if (!pdata || !pdata->disable_touch)
+ mfd_add_devices(wm831x->dev, wm831x_num,
+ touch_devs, ARRAY_SIZE(touch_devs),
+ NULL, wm831x->irq_base);
break;
case WM8320:
diff --git a/include/linux/mfd/wm831x/pdata.h b/include/linux/mfd/wm831x/pdata.h
index ff42d70..0ba2459 100644
--- a/include/linux/mfd/wm831x/pdata.h
+++ b/include/linux/mfd/wm831x/pdata.h
@@ -120,6 +120,9 @@ struct wm831x_pdata {
/** Put the /IRQ line into CMOS mode */
bool irq_cmos;
+ /** Disable the touchscreen */
+ bool disable_touch;
+
int irq_base;
int gpio_base;
int gpio_defaults[WM831X_GPIO_NUM];
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