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 are implemented similar to BOOT LED, LED_ACTIVITY_ENABLE to enable support for it.
It's introduced a new /config property "u-boot,activity-led" and "u-boot,activity-led-period" to define the activity LED label and the default period when the activity LED is set to blink mode.
If "u-boot,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 --- doc/device-tree-bindings/config.txt | 4 ++ drivers/led/Kconfig | 21 ++++++++++ include/led.h | 63 +++++++++++++++++++++++++++++ 3 files changed, 88 insertions(+)
diff --git a/doc/device-tree-bindings/config.txt b/doc/device-tree-bindings/config.txt index 68edd177040..cd9ec88909b 100644 --- a/doc/device-tree-bindings/config.txt +++ b/doc/device-tree-bindings/config.txt @@ -30,8 +30,12 @@ u-boot,boot-led (string) u-boot,error-led (string) This is used to specify the label for an LED to indicate an error and a successful boot, on supported hardware. +u-boot,activity-led (string) + This is used to specify the label for an LED to indicate an activity + if supported by the operation.
u-boot,boot-led-period (int) +u-boot,activity-led-period (int) This is used to specify the default period for an LED in blink mode.
bootsecure (int) diff --git a/drivers/led/Kconfig b/drivers/led/Kconfig index fd9442edaf3..1336f943dab 100644 --- a/drivers/led/Kconfig +++ b/drivers/led/Kconfig @@ -29,6 +29,27 @@ config LED_BOOT_PERIOD help LED boot blink period in ms.
+config LED_ACTIVITY_ENABLE + bool "Enable LED activity support" + help + Enable LED activity support. + + LED activity is a specific LED assigned to signal activity operation + like file trasnfer, flash write/erase... + +config LED_ACTIVITY_LABEL + string "LED activity label" + depends on LED_ACTIVITY_ENABLE + help + LED label defined in DT to assign for LED activity usage. + +config LED_ACTIVITY_PERIOD + int "LED activity period" + depends on LED_ACTIVITY_ENABLE && (LED_BLINK || LED_SW_BLINK) + default 2 + help + LED activity blink period in ms. + config LED_BCM6328 bool "LED Support for BCM6328" depends on LED && ARCH_BMIPS diff --git a/include/led.h b/include/led.h index 2d3b89674e2..6a1471dae85 100644 --- a/include/led.h +++ b/include/led.h @@ -223,4 +223,67 @@ static inline int led_boot_blink(void) #endif #endif
+#ifdef CONFIG_LED_ACTIVITY_ENABLE + +/** + * led_activity_on() - turn ON the designated LED for activity + * + * Return: 0 if OK, -ve on error + */ +static inline int led_activity_on(void) +{ + const char *led_name; + + led_name = ofnode_conf_read_str("u-boot,activity-led"); + if (!led_name) + return -ENOENT; + + return led_set_state_by_label(led_name, LEDST_ON); +} + +/** + * led_activity_off() - turn OFF the designated LED for activity + * + * Return: 0 if OK, -ve on error + */ +static inline int led_activity_off(void) +{ + const char *led_name; + + led_name = ofnode_conf_read_str("u-boot,activity-led"); + if (!led_name) + return -ENOENT; + + return led_set_state_by_label(led_name, LEDST_OFF); +} + +#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 + */ +static inline int led_activity_blink(void) +{ + const char *led_name; + int led_period, ret; + + led_name = ofnode_conf_read_str("u-boot,activity-led"); + if (!led_name) + return -ENOENT; + + led_period = ofnode_conf_read_int("u-boot,activity-led-period", 250); + + ret = led_set_period_by_label(led_name, led_period); + if (ret) + return ret; + + return led_set_state_by_label(led_name, LEDST_BLINK); +} +#else +/* If LED BLINK is not supported/enabled, fallback to LED ON */ +#define led_activity_blink led_activity_on +#endif +#endif + #endif