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dm: demo: Add a simple GPIO demonstration

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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>
This commit is contained in:
Simon Glass
2015-01-05 20:05:31 -07:00
parent 5d1c17e9a5
commit a02af4aeec
5 changed files with 133 additions and 2 deletions
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4
include/dm-demo.h
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@@ -25,10 +25,14 @@ struct dm_demo_pdata {
struct demo_ops {
int (*hello)(struct udevice *dev, int ch);
int (*status)(struct udevice *dev, int *status);
int (*set_light)(struct udevice *dev, int light);
int (*get_light)(struct udevice *dev);
};
int demo_hello(struct udevice *dev, int ch);
int demo_status(struct udevice *dev, int *status);
int demo_set_light(struct udevice *dev, int light);
int demo_get_light(struct udevice *dev);
int demo_list(void);
int demo_parse_dt(struct udevice *dev);