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led: implement LED activity API

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Implement LED activity API similar to BOOT LED API.

Usual activity might be a file transfer with TFTP, a flash write...

User of this API will call led_activity_on/off/blink() to signal these
kind of activity.

New Kconfig is implemented similar to BOOT LED, LED_ACTIVITY to
enable support for it.

It's introduced a new /options/u-boot property "activity-led" and
"activity-led-period" to define the activity LED label and the
default period when the activity LED is set to blink mode.

If "activity-led-period" is not defined, the value of 250 (ms) is
used by default.

If CONFIG_LED_BLINK or CONFIG_LED_SW_BLINK is not enabled,
led_boot_blink call will fallback to simple LED ON.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Christian Marangi
2024-10-01 14:24:38 +02:00
committed by Tom Rini
parent fc55ae03fd
commit aad8cfa3ca
3 changed files with 143 additions and 2 deletions
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51
include/led.h
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@@ -54,14 +54,21 @@ struct led_uc_plat {
* struct led_uc_priv - Private data the uclass stores about each device
*
* @boot_led_label: Boot LED label
* @activity_led_label: Activity LED label
* @boot_led_dev: Boot LED dev
* @activity_led_dev: Activity LED dev
* @boot_led_period: Boot LED blink period
* @activity_led_period: Activity LED blink period
*/
struct led_uc_priv {
#ifdef CONFIG_LED_BOOT
const char *boot_led_label;
int boot_led_period;
#endif
#ifdef CONFIG_LED_ACTIVITY
const char *activity_led_label;
int activity_led_period;
#endif
};
struct led_ops {
@@ -192,4 +199,48 @@ static inline int led_boot_blink(void)
}
#endif
#ifdef CONFIG_LED_ACTIVITY
/**
* led_activity_on() - turn ON the designated LED for activity
*
* Return: 0 if OK, -ve on error
*/
int led_activity_on(void);
/**
* led_activity_off() - turn OFF the designated LED for activity
*
* Return: 0 if OK, -ve on error
*/
int led_activity_off(void);
#if defined(CONFIG_LED_BLINK) || defined(CONFIG_LED_SW_BLINK)
/**
* led_activity_blink() - turn ON the designated LED for activity
*
* Return: 0 if OK, -ve on error
*/
int led_activity_blink(void);
#else
/* If LED BLINK is not supported/enabled, fallback to LED ON */
#define led_activity_blink led_activity_on
#endif
#else
static inline int led_activity_on(void)
{
return -ENOSYS;
}
static inline int led_activity_off(void)
{
return -ENOSYS;
}
static inline int led_activity_blink(void)
{
return -ENOSYS;
}
#endif
#endif