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dm: led: Adjust the LED uclass

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At present this is very simple, supporting only on and off. We want to
also support toggling and blinking. As a first step, change the name of
the main method and use an enum to indicate the state.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Ziping Chen <techping.chan@gmail.com>
This commit is contained in:
Simon Glass 2017-04-10 11:34:54 -06:00
parent 56e19871dc
commit ddae9fcddc
4 changed files with 22 additions and 14 deletions
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19
include/led.h
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@ -17,15 +17,22 @@ struct led_uc_plat {
const char *label;
};
enum led_state_t {
LEDST_OFF = 0,
LEDST_ON = 1,
LEDST_COUNT,
};
struct led_ops {
/**
* set_on() - set the state of an LED
* set_state() - set the state of an LED
*
* @dev: LED device to change
* @on: 1 to turn the LED on, 0 to turn it off
* @state: LED state to set
* @return 0 if OK, -ve on error
*/
int (*set_on)(struct udevice *dev, int on);
int (*set_state)(struct udevice *dev, enum led_state_t state);
};
#define led_get_ops(dev) ((struct led_ops *)(dev)->driver->ops)
@ -40,12 +47,12 @@ struct led_ops {
int led_get_by_label(const char *label, struct udevice **devp);
/**
* led_set_on() - set the state of an LED
* led_set_state() - set the state of an LED
*
* @dev: LED device to change
* @on: 1 to turn the LED on, 0 to turn it off
* @state: LED state to set
* @return 0 if OK, -ve on error
*/
int led_set_on(struct udevice *dev, int on);
int led_set_state(struct udevice *dev, enum led_state_t state);
#endif