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authorSimon Glass <sjg@chromium.org>2015-01-05 20:05:31 -0700
committerSimon Glass <sjg@chromium.org>2015-01-29 17:09:51 -0700
commita02af4aeece40e93bc7d79cd5dc912409efb7020 (patch)
tree799cf6f844e86be0164e4cc1649b62d1c9911eb5 /drivers/demo/demo-uclass.c
parent5d1c17e9a5803af9c65966e469437735ac29659e (diff)
dm: demo: Add a simple GPIO demonstration
Add a new 'demo light' command which uses GPIOs to control imaginary lights. Each light is assigned a bit number in the overall value. This provides an example driver for using the new GPIO API. Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'drivers/demo/demo-uclass.c')
-rw-r--r--drivers/demo/demo-uclass.c20
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/demo/demo-uclass.c b/drivers/demo/demo-uclass.c
index f6510d602c..725f06898f 100644
--- a/drivers/demo/demo-uclass.c
+++ b/drivers/demo/demo-uclass.c
@@ -43,6 +43,26 @@ int demo_status(struct udevice *dev, int *status)
return ops->status(dev, status);
}
+int demo_get_light(struct udevice *dev)
+{
+ const struct demo_ops *ops = device_get_ops(dev);
+
+ if (!ops->get_light)
+ return -ENOSYS;
+
+ return ops->get_light(dev);
+}
+
+int demo_set_light(struct udevice *dev, int light)
+{
+ const struct demo_ops *ops = device_get_ops(dev);
+
+ if (!ops->set_light)
+ return -ENOSYS;
+
+ return ops->set_light(dev, light);
+}
+
int demo_parse_dt(struct udevice *dev)
{
struct dm_demo_pdata *pdata = dev_get_platdata(dev);