[PATCH 4/7] led: status_led: add new activity LED config and functions

[Christian Marangi]

Add a new activity LED config and additional functions to implement a
simple software blink feature to signal activity of any kind.

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

Driver will call status_led_activity on each activity and LED will be
toggled based on the defined FREQ config value.

Signed-off-by: Christian Marangi <ansuelsmth at gmail.com>
---
 drivers/led/Kconfig       | 15 +++++++++++++++
 drivers/misc/status_led.c | 25 ++++++++++++++++++++-----
 include/status_led.h      |  1 +
 3 files changed, 36 insertions(+), 5 deletions(-)

diff --git a/drivers/led/Kconfig b/drivers/led/Kconfig
index 6c4f02d71f2..8eaa74bdd27 100644
--- a/drivers/led/Kconfig
+++ b/drivers/led/Kconfig
@@ -359,6 +359,21 @@ config LED_STATUS_BOOT
 
 endif # LED_STATUS_BOOT_ENABLE
 
+config LED_STATUS_ACTIVITY_ENABLE
+	bool "Enable BOOT LED"
+	help
+	  Enable to turn an LED on when the board is doing some
+	  activity (flash write, file download).
+
+if LED_STATUS_ACTIVITY_ENABLE
+
+config LED_STATUS_ACTIVITY
+	int "LED to light when the board is doing some activity"
+	help
+	  Valid enabled LED device number.
+
+endif # LED_STATUS_ACTIVITY_ENABLE
+
 config LED_STATUS_RED_ENABLE
 	bool "Enable red LED"
 	help
diff --git a/drivers/misc/status_led.c b/drivers/misc/status_led.c
index 93bfb410662..9490e1d7341 100644
--- a/drivers/misc/status_led.c
+++ b/drivers/misc/status_led.c
@@ -82,6 +82,14 @@ void status_led_init(void)
 	status_led_init_done = 1;
 }
 
+static void status_led_sw_blink(led_dev_t *ld)
+{
+	if (++ld->cnt >= ld->period) {
+		__led_toggle(ld->mask);
+		ld->cnt -= ld->period;
+	}
+}
+
 void status_led_tick(ulong timestamp)
 {
 	led_dev_t *ld;
@@ -95,11 +103,7 @@ void status_led_tick(ulong timestamp)
 		if (ld->state != CONFIG_LED_STATUS_BLINKING)
 			continue;
 
-		if (++ld->cnt >= ld->period) {
-			__led_toggle (ld->mask);
-			ld->cnt -= ld->period;
-		}
-
+		status_led_sw_blink(ld);
 	}
 }
 
@@ -140,3 +144,14 @@ void status_led_toggle(int led)
 
 	__led_toggle(ld->mask);
 }
+
+void status_led_activity(int led)
+{
+	led_dev_t *ld;
+
+	ld = status_get_led_dev(led);
+	if (!ld)
+		return;
+
+	status_led_sw_blink(ld);
+}
diff --git a/include/status_led.h b/include/status_led.h
index fe0c84fb4b4..037bad159c2 100644
--- a/include/status_led.h
+++ b/include/status_led.h
@@ -39,6 +39,7 @@ void status_led_init(void);
 void status_led_tick(unsigned long timestamp);
 void status_led_set(int led, int state);
 void status_led_toggle(int led);
+void status_led_activity(int led);
 
 /*****  MVS v1  **********************************************************/
 #if (defined(CONFIG_MVS) && CONFIG_MVS < 2)
-- 
2.43.0