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leds: trigger: netdev: introduce check for possible hw control

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Introduce function to check if the requested mode can use hw control in
preparation for hw control support. Currently everything is handled in
software so can_hw_control will always return false.

Add knob with the new value hw_control in trigger_data struct to
set hw control possible. Useful for future implementation to implement
in set_baseline_state() the required function to set the requested mode
using LEDs hw control ops and in other function to reject set if hw
control is currently active.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Christian Marangi 2023-05-29 18:32:35 +02:00 committed by David S. Miller
parent 28a6a2ef18
commit 4fd1b6d47a
1 changed files with 8 additions and 0 deletions
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8
drivers/leds/trigger/ledtrig-netdev.c
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@ -51,6 +51,7 @@ struct led_netdev_data {
unsigned long mode;
bool carrier_link_up;
bool hw_control;
};
enum led_trigger_netdev_modes {
@ -91,6 +92,11 @@ static void set_baseline_state(struct led_netdev_data *trigger_data)
}
}
static bool can_hw_control(struct led_netdev_data *trigger_data)
{
return false;
}
static ssize_t device_name_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
@ -204,6 +210,8 @@ static ssize_t netdev_led_attr_store(struct device *dev, const char *buf,
else
clear_bit(bit, &trigger_data->mode);
trigger_data->hw_control = can_hw_control(trigger_data);
set_baseline_state(trigger_data);
return size;